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f22716dc | 1 | /* |
be3f512a | 2 | * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc. |
f22716dc JP |
3 | * |
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: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
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. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "ofp-parse.h" | |
20 | ||
00b1c62f | 21 | #include <ctype.h> |
f22716dc JP |
22 | #include <errno.h> |
23 | #include <stdlib.h> | |
24 | ||
daff3353 | 25 | #include "bundle.h" |
10a24935 | 26 | #include "byte-order.h" |
15f1f1b6 | 27 | #include "dynamic-string.h" |
75a75043 | 28 | #include "learn.h" |
6a885fd0 | 29 | #include "meta-flow.h" |
53ddd40a | 30 | #include "multipath.h" |
f25d0cf3 | 31 | #include "netdev.h" |
f393f81e | 32 | #include "nx-match.h" |
f25d0cf3 | 33 | #include "ofp-actions.h" |
f22716dc JP |
34 | #include "ofp-util.h" |
35 | #include "ofpbuf.h" | |
36 | #include "openflow/openflow.h" | |
a944ef40 | 37 | #include "ovs-thread.h" |
f22716dc JP |
38 | #include "packets.h" |
39 | #include "socket-util.h" | |
40 | #include "vconn.h" | |
41 | #include "vlog.h" | |
f22716dc | 42 | |
d98e6007 | 43 | VLOG_DEFINE_THIS_MODULE(ofp_parse); |
f22716dc | 44 | |
bdda5aca BP |
45 | /* Parses 'str' as an 8-bit unsigned integer into '*valuep'. |
46 | * | |
47 | * 'name' describes the value parsed in an error message, if any. | |
48 | * | |
49 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
50 | * error. The caller is responsible for freeing the returned string. */ | |
51 | static char * WARN_UNUSED_RESULT | |
52 | str_to_u8(const char *str, const char *name, uint8_t *valuep) | |
c3636ffc | 53 | { |
638a19b0 | 54 | int value; |
c3636ffc | 55 | |
bdda5aca BP |
56 | if (!str_to_int(str, 0, &value) || value < 0 || value > 255) { |
57 | return xasprintf("invalid %s \"%s\"", name, str); | |
c3636ffc | 58 | } |
bdda5aca BP |
59 | *valuep = value; |
60 | return NULL; | |
c3636ffc BP |
61 | } |
62 | ||
bdda5aca BP |
63 | /* Parses 'str' as a 16-bit unsigned integer into '*valuep'. |
64 | * | |
65 | * 'name' describes the value parsed in an error message, if any. | |
66 | * | |
67 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
68 | * error. The caller is responsible for freeing the returned string. */ | |
69 | static char * WARN_UNUSED_RESULT | |
70 | str_to_u16(const char *str, const char *name, uint16_t *valuep) | |
c3636ffc BP |
71 | { |
72 | int value; | |
73 | ||
74 | if (!str_to_int(str, 0, &value) || value < 0 || value > 65535) { | |
bdda5aca | 75 | return xasprintf("invalid %s \"%s\"", name, str); |
c3636ffc | 76 | } |
bdda5aca BP |
77 | *valuep = value; |
78 | return NULL; | |
c3636ffc BP |
79 | } |
80 | ||
bdda5aca BP |
81 | /* Parses 'str' as a 32-bit unsigned integer into '*valuep'. |
82 | * | |
83 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
84 | * error. The caller is responsible for freeing the returned string. */ | |
85 | static char * WARN_UNUSED_RESULT | |
86 | str_to_u32(const char *str, uint32_t *valuep) | |
f22716dc JP |
87 | { |
88 | char *tail; | |
89 | uint32_t value; | |
90 | ||
c4894ed4 | 91 | if (!str[0]) { |
bdda5aca | 92 | return xstrdup("missing required numeric argument"); |
ce5452cf EJ |
93 | } |
94 | ||
f22716dc JP |
95 | errno = 0; |
96 | value = strtoul(str, &tail, 0); | |
97 | if (errno == EINVAL || errno == ERANGE || *tail) { | |
bdda5aca | 98 | return xasprintf("invalid numeric format %s", str); |
f22716dc | 99 | } |
bdda5aca BP |
100 | *valuep = value; |
101 | return NULL; | |
f22716dc JP |
102 | } |
103 | ||
bdda5aca BP |
104 | /* Parses 'str' as an 64-bit unsigned integer into '*valuep'. |
105 | * | |
106 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
107 | * error. The caller is responsible for freeing the returned string. */ | |
108 | static char * WARN_UNUSED_RESULT | |
109 | str_to_u64(const char *str, uint64_t *valuep) | |
f22716dc JP |
110 | { |
111 | char *tail; | |
112 | uint64_t value; | |
113 | ||
c4894ed4 | 114 | if (!str[0]) { |
bdda5aca | 115 | return xstrdup("missing required numeric argument"); |
c4894ed4 BP |
116 | } |
117 | ||
f22716dc JP |
118 | errno = 0; |
119 | value = strtoull(str, &tail, 0); | |
120 | if (errno == EINVAL || errno == ERANGE || *tail) { | |
bdda5aca | 121 | return xasprintf("invalid numeric format %s", str); |
f22716dc | 122 | } |
bdda5aca BP |
123 | *valuep = value; |
124 | return NULL; | |
f22716dc JP |
125 | } |
126 | ||
bdda5aca BP |
127 | /* Parses 'str' as an 64-bit unsigned integer in network byte order into |
128 | * '*valuep'. | |
129 | * | |
130 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
131 | * error. The caller is responsible for freeing the returned string. */ | |
132 | static char * WARN_UNUSED_RESULT | |
133 | str_to_be64(const char *str, ovs_be64 *valuep) | |
134 | { | |
135 | uint64_t value; | |
136 | char *error; | |
137 | ||
138 | error = str_to_u64(str, &value); | |
139 | if (!error) { | |
140 | *valuep = htonll(value); | |
141 | } | |
142 | return error; | |
143 | } | |
144 | ||
145 | /* Parses 'str' as an Ethernet address into 'mac'. | |
146 | * | |
147 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
148 | * error. The caller is responsible for freeing the returned string. */ | |
149 | static char * WARN_UNUSED_RESULT | |
f22716dc JP |
150 | str_to_mac(const char *str, uint8_t mac[6]) |
151 | { | |
152 | if (sscanf(str, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac)) | |
153 | != ETH_ADDR_SCAN_COUNT) { | |
bdda5aca | 154 | return xasprintf("invalid mac address %s", str); |
f22716dc | 155 | } |
bdda5aca | 156 | return NULL; |
f22716dc JP |
157 | } |
158 | ||
bdda5aca BP |
159 | /* Parses 'str' as an IP address into '*ip'. |
160 | * | |
161 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
162 | * error. The caller is responsible for freeing the returned string. */ | |
163 | static char * WARN_UNUSED_RESULT | |
6a885fd0 | 164 | str_to_ip(const char *str, ovs_be32 *ip) |
cb8ca532 | 165 | { |
f22716dc | 166 | struct in_addr in_addr; |
f22716dc | 167 | |
6a885fd0 | 168 | if (lookup_ip(str, &in_addr)) { |
bdda5aca | 169 | return xasprintf("%s: could not convert to IP address", str); |
f22716dc JP |
170 | } |
171 | *ip = in_addr.s_addr; | |
bdda5aca | 172 | return NULL; |
d31f1109 JP |
173 | } |
174 | ||
bdda5aca BP |
175 | /* Parses 'arg' as the argument to an "enqueue" action, and appends such an |
176 | * action to 'ofpacts'. | |
177 | * | |
178 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
179 | * error. The caller is responsible for freeing the returned string. */ | |
180 | static char * WARN_UNUSED_RESULT | |
f25d0cf3 | 181 | parse_enqueue(char *arg, struct ofpbuf *ofpacts) |
5682f723 | 182 | { |
333eba21 BP |
183 | char *sp = NULL; |
184 | char *port = strtok_r(arg, ":q", &sp); | |
185 | char *queue = strtok_r(NULL, "", &sp); | |
f25d0cf3 | 186 | struct ofpact_enqueue *enqueue; |
333eba21 BP |
187 | |
188 | if (port == NULL || queue == NULL) { | |
bdda5aca | 189 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\""); |
333eba21 BP |
190 | } |
191 | ||
f25d0cf3 | 192 | enqueue = ofpact_put_ENQUEUE(ofpacts); |
bdda5aca BP |
193 | if (!ofputil_port_from_string(port, &enqueue->port)) { |
194 | return xasprintf("%s: enqueue to unknown port", port); | |
195 | } | |
196 | return str_to_u32(queue, &enqueue->queue); | |
5682f723 BP |
197 | } |
198 | ||
bdda5aca BP |
199 | /* Parses 'arg' as the argument to an "output" action, and appends such an |
200 | * action to 'ofpacts'. | |
201 | * | |
202 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
203 | * error. The caller is responsible for freeing the returned string. */ | |
204 | static char * WARN_UNUSED_RESULT | |
205 | parse_output(const char *arg, struct ofpbuf *ofpacts) | |
f694937d EJ |
206 | { |
207 | if (strchr(arg, '[')) { | |
f25d0cf3 | 208 | struct ofpact_output_reg *output_reg; |
f694937d | 209 | |
f25d0cf3 | 210 | output_reg = ofpact_put_OUTPUT_REG(ofpacts); |
f25d0cf3 | 211 | output_reg->max_len = UINT16_MAX; |
bdda5aca | 212 | return mf_parse_subfield(&output_reg->src, arg); |
f694937d | 213 | } else { |
f25d0cf3 BP |
214 | struct ofpact_output *output; |
215 | ||
216 | output = ofpact_put_OUTPUT(ofpacts); | |
f25d0cf3 | 217 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; |
bdda5aca BP |
218 | if (!ofputil_port_from_string(arg, &output->port)) { |
219 | return xasprintf("%s: output to unknown port", arg); | |
220 | } | |
221 | return NULL; | |
f694937d EJ |
222 | } |
223 | } | |
224 | ||
bdda5aca BP |
225 | /* Parses 'arg' as the argument to an "resubmit" action, and appends such an |
226 | * action to 'ofpacts'. | |
227 | * | |
228 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
229 | * error. The caller is responsible for freeing the returned string. */ | |
230 | static char * WARN_UNUSED_RESULT | |
f25d0cf3 | 231 | parse_resubmit(char *arg, struct ofpbuf *ofpacts) |
29901626 | 232 | { |
f25d0cf3 | 233 | struct ofpact_resubmit *resubmit; |
29901626 | 234 | char *in_port_s, *table_s; |
f25d0cf3 BP |
235 | |
236 | resubmit = ofpact_put_RESUBMIT(ofpacts); | |
29901626 BP |
237 | |
238 | in_port_s = strsep(&arg, ","); | |
239 | if (in_port_s && in_port_s[0]) { | |
8010100b | 240 | if (!ofputil_port_from_string(in_port_s, &resubmit->in_port)) { |
bdda5aca | 241 | return xasprintf("%s: resubmit to unknown port", in_port_s); |
29901626 BP |
242 | } |
243 | } else { | |
f25d0cf3 | 244 | resubmit->in_port = OFPP_IN_PORT; |
29901626 BP |
245 | } |
246 | ||
247 | table_s = strsep(&arg, ","); | |
bdda5aca BP |
248 | if (table_s && table_s[0]) { |
249 | uint32_t table_id; | |
250 | char *error; | |
251 | ||
252 | error = str_to_u32(table_s, &table_id); | |
253 | if (error) { | |
254 | return error; | |
255 | } | |
256 | resubmit->table_id = table_id; | |
257 | } else { | |
258 | resubmit->table_id = 255; | |
259 | } | |
29901626 | 260 | |
f25d0cf3 | 261 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
bdda5aca BP |
262 | return xstrdup("at least one \"in_port\" or \"table\" must be " |
263 | "specified on resubmit"); | |
29901626 | 264 | } |
bdda5aca | 265 | return NULL; |
333eba21 BP |
266 | } |
267 | ||
bdda5aca BP |
268 | /* Parses 'arg' as the argument to a "note" action, and appends such an action |
269 | * to 'ofpacts'. | |
270 | * | |
271 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
272 | * error. The caller is responsible for freeing the returned string. */ | |
273 | static char * WARN_UNUSED_RESULT | |
f25d0cf3 | 274 | parse_note(const char *arg, struct ofpbuf *ofpacts) |
333eba21 | 275 | { |
f25d0cf3 | 276 | struct ofpact_note *note; |
333eba21 | 277 | |
f25d0cf3 | 278 | note = ofpact_put_NOTE(ofpacts); |
333eba21 BP |
279 | while (*arg != '\0') { |
280 | uint8_t byte; | |
281 | bool ok; | |
282 | ||
283 | if (*arg == '.') { | |
284 | arg++; | |
285 | } | |
286 | if (*arg == '\0') { | |
287 | break; | |
288 | } | |
289 | ||
290 | byte = hexits_value(arg, 2, &ok); | |
291 | if (!ok) { | |
bdda5aca | 292 | return xstrdup("bad hex digit in `note' argument"); |
333eba21 | 293 | } |
f25d0cf3 | 294 | ofpbuf_put(ofpacts, &byte, 1); |
333eba21 | 295 | |
f25d0cf3 BP |
296 | note = ofpacts->l2; |
297 | note->length++; | |
333eba21 | 298 | |
f25d0cf3 | 299 | arg += 2; |
333eba21 | 300 | } |
f25d0cf3 | 301 | ofpact_update_len(ofpacts, ¬e->ofpact); |
bdda5aca | 302 | return NULL; |
333eba21 BP |
303 | } |
304 | ||
bdda5aca BP |
305 | /* Parses 'arg' as the argument to a "fin_timeout" action, and appends such an |
306 | * action to 'ofpacts'. | |
307 | * | |
308 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
309 | * error. The caller is responsible for freeing the returned string. */ | |
310 | static char * WARN_UNUSED_RESULT | |
0e553d9c BP |
311 | parse_fin_timeout(struct ofpbuf *b, char *arg) |
312 | { | |
f25d0cf3 | 313 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(b); |
0e553d9c BP |
314 | char *key, *value; |
315 | ||
0e553d9c | 316 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
bdda5aca BP |
317 | char *error; |
318 | ||
0e553d9c | 319 | if (!strcmp(key, "idle_timeout")) { |
bdda5aca | 320 | error = str_to_u16(value, key, &oft->fin_idle_timeout); |
0e553d9c | 321 | } else if (!strcmp(key, "hard_timeout")) { |
bdda5aca | 322 | error = str_to_u16(value, key, &oft->fin_hard_timeout); |
0e553d9c | 323 | } else { |
bdda5aca BP |
324 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", |
325 | key); | |
326 | } | |
327 | ||
328 | if (error) { | |
329 | return error; | |
0e553d9c BP |
330 | } |
331 | } | |
bdda5aca | 332 | return NULL; |
0e553d9c BP |
333 | } |
334 | ||
bdda5aca BP |
335 | /* Parses 'arg' as the argument to a "controller" action, and appends such an |
336 | * action to 'ofpacts'. | |
337 | * | |
338 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
339 | * error. The caller is responsible for freeing the returned string. */ | |
340 | static char * WARN_UNUSED_RESULT | |
a7349929 BP |
341 | parse_controller(struct ofpbuf *b, char *arg) |
342 | { | |
343 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
344 | uint16_t controller_id = 0; | |
345 | uint16_t max_len = UINT16_MAX; | |
346 | ||
347 | if (!arg[0]) { | |
348 | /* Use defaults. */ | |
349 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
bdda5aca BP |
350 | char *error = str_to_u16(arg, "max_len", &max_len); |
351 | if (error) { | |
352 | return error; | |
353 | } | |
a7349929 BP |
354 | } else { |
355 | char *name, *value; | |
356 | ||
357 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
358 | if (!strcmp(name, "reason")) { | |
359 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
bdda5aca | 360 | return xasprintf("unknown reason \"%s\"", value); |
a7349929 BP |
361 | } |
362 | } else if (!strcmp(name, "max_len")) { | |
bdda5aca BP |
363 | char *error = str_to_u16(value, "max_len", &max_len); |
364 | if (error) { | |
365 | return error; | |
366 | } | |
a7349929 | 367 | } else if (!strcmp(name, "id")) { |
bdda5aca BP |
368 | char *error = str_to_u16(value, "id", &controller_id); |
369 | if (error) { | |
370 | return error; | |
371 | } | |
a7349929 | 372 | } else { |
bdda5aca BP |
373 | return xasprintf("unknown key \"%s\" parsing controller " |
374 | "action", name); | |
a7349929 BP |
375 | } |
376 | } | |
377 | } | |
378 | ||
379 | if (reason == OFPR_ACTION && controller_id == 0) { | |
f25d0cf3 BP |
380 | struct ofpact_output *output; |
381 | ||
382 | output = ofpact_put_OUTPUT(b); | |
383 | output->port = OFPP_CONTROLLER; | |
384 | output->max_len = max_len; | |
a7349929 | 385 | } else { |
f25d0cf3 | 386 | struct ofpact_controller *controller; |
a7349929 | 387 | |
f25d0cf3 BP |
388 | controller = ofpact_put_CONTROLLER(b); |
389 | controller->max_len = max_len; | |
390 | controller->reason = reason; | |
391 | controller->controller_id = controller_id; | |
a7349929 | 392 | } |
bdda5aca BP |
393 | |
394 | return NULL; | |
a7349929 BP |
395 | } |
396 | ||
c2d967a5 | 397 | static void |
99086062 | 398 | parse_noargs_dec_ttl(struct ofpbuf *b) |
c2d967a5 MM |
399 | { |
400 | struct ofpact_cnt_ids *ids; | |
7bcb1506 | 401 | uint16_t id = 0; |
c2d967a5 MM |
402 | |
403 | ids = ofpact_put_DEC_TTL(b); | |
7bcb1506 IY |
404 | ofpbuf_put(b, &id, sizeof id); |
405 | ids = b->l2; | |
406 | ids->n_controllers++; | |
407 | ofpact_update_len(b, &ids->ofpact); | |
408 | } | |
c2d967a5 | 409 | |
bdda5aca BP |
410 | /* Parses 'arg' as the argument to a "dec_ttl" action, and appends such an |
411 | * action to 'ofpacts'. | |
412 | * | |
413 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
414 | * error. The caller is responsible for freeing the returned string. */ | |
415 | static char * WARN_UNUSED_RESULT | |
99086062 | 416 | parse_dec_ttl(struct ofpbuf *b, char *arg) |
7bcb1506 | 417 | { |
c2d967a5 | 418 | if (*arg == '\0') { |
99086062 | 419 | parse_noargs_dec_ttl(b); |
c2d967a5 | 420 | } else { |
7bcb1506 | 421 | struct ofpact_cnt_ids *ids; |
c2d967a5 MM |
422 | char *cntr; |
423 | ||
7bcb1506 | 424 | ids = ofpact_put_DEC_TTL(b); |
c2d967a5 MM |
425 | ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS; |
426 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
427 | cntr = strtok_r(NULL, ", ", &arg)) { | |
428 | uint16_t id = atoi(cntr); | |
429 | ||
430 | ofpbuf_put(b, &id, sizeof id); | |
431 | ids = b->l2; | |
432 | ids->n_controllers++; | |
433 | } | |
434 | if (!ids->n_controllers) { | |
bdda5aca BP |
435 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " |
436 | "id."); | |
c2d967a5 | 437 | } |
7bcb1506 | 438 | ofpact_update_len(b, &ids->ofpact); |
c2d967a5 | 439 | } |
bdda5aca | 440 | return NULL; |
c2d967a5 MM |
441 | } |
442 | ||
bdda5aca BP |
443 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
444 | * action to 'ofpacts'. | |
445 | * | |
446 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
447 | * error. The caller is responsible for freeing the returned string. */ | |
448 | static char * WARN_UNUSED_RESULT | |
0f3f3c3d SH |
449 | parse_set_mpls_ttl(struct ofpbuf *b, const char *arg) |
450 | { | |
451 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(b); | |
452 | ||
453 | if (*arg == '\0') { | |
bdda5aca | 454 | return xstrdup("parse_set_mpls_ttl: expected ttl."); |
0f3f3c3d SH |
455 | } |
456 | ||
457 | mpls_ttl->ttl = atoi(arg); | |
bdda5aca | 458 | return NULL; |
0f3f3c3d SH |
459 | } |
460 | ||
bdda5aca BP |
461 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
462 | * action to 'ofpacts'. | |
463 | * | |
464 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
465 | * error. The caller is responsible for freeing the returned string. */ | |
466 | static char * WARN_UNUSED_RESULT | |
467 | set_field_parse__(char *arg, struct ofpbuf *ofpacts) | |
f5c45121 | 468 | { |
f5c45121 SH |
469 | struct ofpact_reg_load *load = ofpact_put_REG_LOAD(ofpacts); |
470 | char *value; | |
471 | char *delim; | |
472 | char *key; | |
473 | const struct mf_field *mf; | |
bdda5aca | 474 | char *error; |
f5c45121 SH |
475 | union mf_value mf_value; |
476 | ||
bdda5aca BP |
477 | value = arg; |
478 | delim = strstr(arg, "->"); | |
f5c45121 | 479 | if (!delim) { |
bdda5aca | 480 | return xasprintf("%s: missing `->'", arg); |
f5c45121 SH |
481 | } |
482 | if (strlen(delim) <= strlen("->")) { | |
bdda5aca | 483 | return xasprintf("%s: missing field name following `->'", arg); |
f5c45121 SH |
484 | } |
485 | ||
486 | key = delim + strlen("->"); | |
487 | mf = mf_from_name(key); | |
488 | if (!mf) { | |
bdda5aca | 489 | return xasprintf("%s is not a valid OXM field name", key); |
f5c45121 SH |
490 | } |
491 | if (!mf->writable) { | |
bdda5aca | 492 | return xasprintf("%s is read-only", key); |
f5c45121 SH |
493 | } |
494 | ||
495 | delim[0] = '\0'; | |
496 | error = mf_parse_value(mf, value, &mf_value); | |
497 | if (error) { | |
bdda5aca | 498 | return error; |
f5c45121 SH |
499 | } |
500 | if (!mf_is_value_valid(mf, &mf_value)) { | |
bdda5aca | 501 | return xasprintf("%s is not a valid value for field %s", value, key); |
f5c45121 SH |
502 | } |
503 | ofpact_set_field_init(load, mf, &mf_value); | |
bdda5aca BP |
504 | |
505 | return NULL; | |
f5c45121 SH |
506 | } |
507 | ||
bdda5aca BP |
508 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
509 | * action to 'ofpacts'. | |
510 | * | |
511 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
512 | * error. The caller is responsible for freeing the returned string. */ | |
513 | static char * WARN_UNUSED_RESULT | |
514 | set_field_parse(const char *arg, struct ofpbuf *ofpacts) | |
515 | { | |
516 | char *copy = xstrdup(arg); | |
517 | char *error = set_field_parse__(copy, ofpacts); | |
518 | free(copy); | |
519 | return error; | |
520 | } | |
521 | ||
522 | /* Parses 'arg' as the argument to a "write_metadata" instruction, and appends | |
523 | * such an action to 'ofpacts'. | |
524 | * | |
525 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
526 | * error. The caller is responsible for freeing the returned string. */ | |
527 | static char * WARN_UNUSED_RESULT | |
4cceacb9 JS |
528 | parse_metadata(struct ofpbuf *b, char *arg) |
529 | { | |
530 | struct ofpact_metadata *om; | |
531 | char *mask = strchr(arg, '/'); | |
532 | ||
533 | om = ofpact_put_WRITE_METADATA(b); | |
534 | ||
535 | if (mask) { | |
bdda5aca BP |
536 | char *error; |
537 | ||
4cceacb9 | 538 | *mask = '\0'; |
bdda5aca BP |
539 | error = str_to_be64(mask + 1, &om->mask); |
540 | if (error) { | |
541 | return error; | |
542 | } | |
4cceacb9 JS |
543 | } else { |
544 | om->mask = htonll(UINT64_MAX); | |
545 | } | |
546 | ||
bdda5aca | 547 | return str_to_be64(arg, &om->metadata); |
4cceacb9 JS |
548 | } |
549 | ||
bdda5aca BP |
550 | /* Parses 'arg' as the argument to a "sample" action, and appends such an |
551 | * action to 'ofpacts'. | |
552 | * | |
553 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
554 | * error. The caller is responsible for freeing the returned string. */ | |
555 | static char * WARN_UNUSED_RESULT | |
29089a54 RL |
556 | parse_sample(struct ofpbuf *b, char *arg) |
557 | { | |
558 | struct ofpact_sample *os = ofpact_put_SAMPLE(b); | |
559 | char *key, *value; | |
560 | ||
561 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
bdda5aca BP |
562 | char *error = NULL; |
563 | ||
29089a54 | 564 | if (!strcmp(key, "probability")) { |
bdda5aca BP |
565 | error = str_to_u16(value, "probability", &os->probability); |
566 | if (!error && os->probability == 0) { | |
567 | error = xasprintf("invalid probability value \"%s\"", value); | |
29089a54 RL |
568 | } |
569 | } else if (!strcmp(key, "collector_set_id")) { | |
bdda5aca | 570 | error = str_to_u32(value, &os->collector_set_id); |
29089a54 | 571 | } else if (!strcmp(key, "obs_domain_id")) { |
bdda5aca | 572 | error = str_to_u32(value, &os->obs_domain_id); |
29089a54 | 573 | } else if (!strcmp(key, "obs_point_id")) { |
bdda5aca | 574 | error = str_to_u32(value, &os->obs_point_id); |
29089a54 | 575 | } else { |
bdda5aca BP |
576 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", |
577 | key); | |
578 | } | |
579 | if (error) { | |
580 | return error; | |
29089a54 RL |
581 | } |
582 | } | |
583 | if (os->probability == 0) { | |
bdda5aca | 584 | return xstrdup("non-zero \"probability\" must be specified on sample"); |
29089a54 | 585 | } |
bdda5aca | 586 | return NULL; |
29089a54 RL |
587 | } |
588 | ||
bdda5aca BP |
589 | /* Parses 'arg' as the argument to action 'code', and appends such an action to |
590 | * 'ofpacts'. | |
591 | * | |
592 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
593 | * error. The caller is responsible for freeing the returned string. */ | |
594 | static char * WARN_UNUSED_RESULT | |
dd43a558 | 595 | parse_named_action(enum ofputil_action_code code, |
f25d0cf3 | 596 | char *arg, struct ofpbuf *ofpacts) |
333eba21 | 597 | { |
bdda5aca | 598 | size_t orig_size = ofpacts->size; |
f25d0cf3 | 599 | struct ofpact_tunnel *tunnel; |
bdda5aca | 600 | char *error = NULL; |
3e34fbdd | 601 | uint16_t ethertype; |
bdda5aca | 602 | uint16_t vid; |
f25d0cf3 BP |
603 | uint8_t pcp; |
604 | uint8_t tos; | |
333eba21 BP |
605 | |
606 | switch (code) { | |
690a61c5 BP |
607 | case OFPUTIL_ACTION_INVALID: |
608 | NOT_REACHED(); | |
609 | ||
08f94c0e | 610 | case OFPUTIL_OFPAT10_OUTPUT: |
d01c980f | 611 | case OFPUTIL_OFPAT11_OUTPUT: |
bdda5aca | 612 | error = parse_output(arg, ofpacts); |
333eba21 BP |
613 | break; |
614 | ||
08f94c0e | 615 | case OFPUTIL_OFPAT10_SET_VLAN_VID: |
d01c980f | 616 | case OFPUTIL_OFPAT11_SET_VLAN_VID: |
bdda5aca BP |
617 | error = str_to_u16(arg, "VLAN VID", &vid); |
618 | if (error) { | |
619 | return error; | |
620 | } | |
621 | ||
f25d0cf3 | 622 | if (vid & ~VLAN_VID_MASK) { |
bdda5aca | 623 | return xasprintf("%s: not a valid VLAN VID", arg); |
f25d0cf3 BP |
624 | } |
625 | ofpact_put_SET_VLAN_VID(ofpacts)->vlan_vid = vid; | |
333eba21 BP |
626 | break; |
627 | ||
08f94c0e | 628 | case OFPUTIL_OFPAT10_SET_VLAN_PCP: |
d01c980f | 629 | case OFPUTIL_OFPAT11_SET_VLAN_PCP: |
bdda5aca BP |
630 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
631 | if (error) { | |
632 | return error; | |
633 | } | |
634 | ||
f25d0cf3 | 635 | if (pcp & ~7) { |
bdda5aca | 636 | return xasprintf("%s: not a valid VLAN PCP", arg); |
f25d0cf3 BP |
637 | } |
638 | ofpact_put_SET_VLAN_PCP(ofpacts)->vlan_pcp = pcp; | |
333eba21 BP |
639 | break; |
640 | ||
78a3fff6 | 641 | case OFPUTIL_OFPAT12_SET_FIELD: |
bdda5aca | 642 | return set_field_parse(arg, ofpacts); |
78a3fff6 | 643 | |
08f94c0e | 644 | case OFPUTIL_OFPAT10_STRIP_VLAN: |
8e61c110 | 645 | case OFPUTIL_OFPAT11_POP_VLAN: |
f25d0cf3 | 646 | ofpact_put_STRIP_VLAN(ofpacts); |
333eba21 BP |
647 | break; |
648 | ||
3e34fbdd | 649 | case OFPUTIL_OFPAT11_PUSH_VLAN: |
bdda5aca BP |
650 | error = str_to_u16(arg, "ethertype", ðertype); |
651 | if (error) { | |
652 | return error; | |
653 | } | |
654 | ||
3e34fbdd | 655 | if (ethertype != ETH_TYPE_VLAN_8021Q) { |
5dca28b5 | 656 | /* XXX ETH_TYPE_VLAN_8021AD case isn't supported */ |
bdda5aca | 657 | return xasprintf("%s: not a valid VLAN ethertype", arg); |
3e34fbdd | 658 | } |
bdda5aca | 659 | |
3e34fbdd IY |
660 | ofpact_put_PUSH_VLAN(ofpacts); |
661 | break; | |
662 | ||
276c4e7a | 663 | case OFPUTIL_OFPAT11_SET_QUEUE: |
bdda5aca | 664 | error = str_to_u32(arg, &ofpact_put_SET_QUEUE(ofpacts)->queue_id); |
276c4e7a SH |
665 | break; |
666 | ||
08f94c0e | 667 | case OFPUTIL_OFPAT10_SET_DL_SRC: |
d01c980f | 668 | case OFPUTIL_OFPAT11_SET_DL_SRC: |
bdda5aca | 669 | error = str_to_mac(arg, ofpact_put_SET_ETH_SRC(ofpacts)->mac); |
f25d0cf3 BP |
670 | break; |
671 | ||
08f94c0e | 672 | case OFPUTIL_OFPAT10_SET_DL_DST: |
d01c980f | 673 | case OFPUTIL_OFPAT11_SET_DL_DST: |
bdda5aca | 674 | error = str_to_mac(arg, ofpact_put_SET_ETH_DST(ofpacts)->mac); |
333eba21 BP |
675 | break; |
676 | ||
08f94c0e | 677 | case OFPUTIL_OFPAT10_SET_NW_SRC: |
d01c980f | 678 | case OFPUTIL_OFPAT11_SET_NW_SRC: |
bdda5aca | 679 | error = str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(ofpacts)->ipv4); |
f25d0cf3 BP |
680 | break; |
681 | ||
08f94c0e | 682 | case OFPUTIL_OFPAT10_SET_NW_DST: |
d01c980f | 683 | case OFPUTIL_OFPAT11_SET_NW_DST: |
bdda5aca | 684 | error = str_to_ip(arg, &ofpact_put_SET_IPV4_DST(ofpacts)->ipv4); |
333eba21 BP |
685 | break; |
686 | ||
08f94c0e | 687 | case OFPUTIL_OFPAT10_SET_NW_TOS: |
d01c980f | 688 | case OFPUTIL_OFPAT11_SET_NW_TOS: |
bdda5aca BP |
689 | error = str_to_u8(arg, "TOS", &tos); |
690 | if (error) { | |
691 | return error; | |
692 | } | |
693 | ||
f25d0cf3 | 694 | if (tos & ~IP_DSCP_MASK) { |
bdda5aca | 695 | return xasprintf("%s: not a valid TOS", arg); |
f25d0cf3 BP |
696 | } |
697 | ofpact_put_SET_IPV4_DSCP(ofpacts)->dscp = tos; | |
333eba21 BP |
698 | break; |
699 | ||
7bcb1506 | 700 | case OFPUTIL_OFPAT11_DEC_NW_TTL: |
68194f84 | 701 | NOT_REACHED(); |
7bcb1506 | 702 | |
08f94c0e | 703 | case OFPUTIL_OFPAT10_SET_TP_SRC: |
d01c980f | 704 | case OFPUTIL_OFPAT11_SET_TP_SRC: |
bdda5aca BP |
705 | error = str_to_u16(arg, "source port", |
706 | &ofpact_put_SET_L4_SRC_PORT(ofpacts)->port); | |
f25d0cf3 BP |
707 | break; |
708 | ||
08f94c0e | 709 | case OFPUTIL_OFPAT10_SET_TP_DST: |
d01c980f | 710 | case OFPUTIL_OFPAT11_SET_TP_DST: |
bdda5aca BP |
711 | error = str_to_u16(arg, "destination port", |
712 | &ofpact_put_SET_L4_DST_PORT(ofpacts)->port); | |
333eba21 BP |
713 | break; |
714 | ||
08f94c0e | 715 | case OFPUTIL_OFPAT10_ENQUEUE: |
bdda5aca | 716 | error = parse_enqueue(arg, ofpacts); |
333eba21 BP |
717 | break; |
718 | ||
719 | case OFPUTIL_NXAST_RESUBMIT: | |
bdda5aca | 720 | error = parse_resubmit(arg, ofpacts); |
333eba21 BP |
721 | break; |
722 | ||
723 | case OFPUTIL_NXAST_SET_TUNNEL: | |
f25d0cf3 BP |
724 | case OFPUTIL_NXAST_SET_TUNNEL64: |
725 | tunnel = ofpact_put_SET_TUNNEL(ofpacts); | |
726 | tunnel->ofpact.compat = code; | |
bdda5aca | 727 | error = str_to_u64(arg, &tunnel->tun_id); |
333eba21 BP |
728 | break; |
729 | ||
4cceacb9 | 730 | case OFPUTIL_NXAST_WRITE_METADATA: |
bdda5aca | 731 | error = parse_metadata(ofpacts, arg); |
4cceacb9 JS |
732 | break; |
733 | ||
333eba21 | 734 | case OFPUTIL_NXAST_SET_QUEUE: |
bdda5aca | 735 | error = str_to_u32(arg, &ofpact_put_SET_QUEUE(ofpacts)->queue_id); |
333eba21 BP |
736 | break; |
737 | ||
738 | case OFPUTIL_NXAST_POP_QUEUE: | |
f25d0cf3 | 739 | ofpact_put_POP_QUEUE(ofpacts); |
333eba21 BP |
740 | break; |
741 | ||
742 | case OFPUTIL_NXAST_REG_MOVE: | |
bdda5aca | 743 | error = nxm_parse_reg_move(ofpact_put_REG_MOVE(ofpacts), arg); |
333eba21 BP |
744 | break; |
745 | ||
746 | case OFPUTIL_NXAST_REG_LOAD: | |
bdda5aca | 747 | error = nxm_parse_reg_load(ofpact_put_REG_LOAD(ofpacts), arg); |
333eba21 BP |
748 | break; |
749 | ||
750 | case OFPUTIL_NXAST_NOTE: | |
bdda5aca | 751 | error = parse_note(arg, ofpacts); |
93996add BP |
752 | break; |
753 | ||
333eba21 | 754 | case OFPUTIL_NXAST_MULTIPATH: |
bdda5aca | 755 | error = multipath_parse(ofpact_put_MULTIPATH(ofpacts), arg); |
333eba21 BP |
756 | break; |
757 | ||
333eba21 | 758 | case OFPUTIL_NXAST_BUNDLE: |
bdda5aca | 759 | error = bundle_parse(arg, ofpacts); |
333eba21 BP |
760 | break; |
761 | ||
762 | case OFPUTIL_NXAST_BUNDLE_LOAD: | |
bdda5aca | 763 | error = bundle_parse_load(arg, ofpacts); |
333eba21 BP |
764 | break; |
765 | ||
766 | case OFPUTIL_NXAST_RESUBMIT_TABLE: | |
767 | case OFPUTIL_NXAST_OUTPUT_REG: | |
c2d967a5 | 768 | case OFPUTIL_NXAST_DEC_TTL_CNT_IDS: |
333eba21 | 769 | NOT_REACHED(); |
75a75043 BP |
770 | |
771 | case OFPUTIL_NXAST_LEARN: | |
bdda5aca | 772 | error = learn_parse(arg, ofpacts); |
75a75043 | 773 | break; |
a61680c6 | 774 | |
848e8809 | 775 | case OFPUTIL_NXAST_EXIT: |
f25d0cf3 | 776 | ofpact_put_EXIT(ofpacts); |
848e8809 | 777 | break; |
f0fd1a17 PS |
778 | |
779 | case OFPUTIL_NXAST_DEC_TTL: | |
bdda5aca | 780 | error = parse_dec_ttl(ofpacts, arg); |
f0fd1a17 | 781 | break; |
0e553d9c | 782 | |
0f3f3c3d SH |
783 | case OFPUTIL_NXAST_SET_MPLS_TTL: |
784 | case OFPUTIL_OFPAT11_SET_MPLS_TTL: | |
bdda5aca | 785 | error = parse_set_mpls_ttl(ofpacts, arg); |
0f3f3c3d SH |
786 | break; |
787 | ||
b676167a SH |
788 | case OFPUTIL_OFPAT11_DEC_MPLS_TTL: |
789 | case OFPUTIL_NXAST_DEC_MPLS_TTL: | |
790 | ofpact_put_DEC_MPLS_TTL(ofpacts); | |
791 | break; | |
792 | ||
0e553d9c | 793 | case OFPUTIL_NXAST_FIN_TIMEOUT: |
bdda5aca | 794 | error = parse_fin_timeout(ofpacts, arg); |
0e553d9c | 795 | break; |
a7349929 BP |
796 | |
797 | case OFPUTIL_NXAST_CONTROLLER: | |
bdda5aca | 798 | error = parse_controller(ofpacts, arg); |
a7349929 | 799 | break; |
b02475c5 SH |
800 | |
801 | case OFPUTIL_OFPAT11_PUSH_MPLS: | |
802 | case OFPUTIL_NXAST_PUSH_MPLS: | |
bdda5aca BP |
803 | error = str_to_u16(arg, "push_mpls", ðertype); |
804 | if (!error) { | |
805 | ofpact_put_PUSH_MPLS(ofpacts)->ethertype = htons(ethertype); | |
806 | } | |
b02475c5 SH |
807 | break; |
808 | ||
809 | case OFPUTIL_OFPAT11_POP_MPLS: | |
810 | case OFPUTIL_NXAST_POP_MPLS: | |
bdda5aca BP |
811 | error = str_to_u16(arg, "pop_mpls", ðertype); |
812 | if (!error) { | |
813 | ofpact_put_POP_MPLS(ofpacts)->ethertype = htons(ethertype); | |
814 | } | |
b02475c5 | 815 | break; |
29089a54 | 816 | |
bd85dac1 | 817 | case OFPUTIL_NXAST_STACK_PUSH: |
bdda5aca | 818 | error = nxm_parse_stack_action(ofpact_put_STACK_PUSH(ofpacts), arg); |
bd85dac1 AZ |
819 | break; |
820 | case OFPUTIL_NXAST_STACK_POP: | |
bdda5aca | 821 | error = nxm_parse_stack_action(ofpact_put_STACK_POP(ofpacts), arg); |
bd85dac1 | 822 | break; |
29089a54 RL |
823 | |
824 | case OFPUTIL_NXAST_SAMPLE: | |
bdda5aca | 825 | error = parse_sample(ofpacts, arg); |
29089a54 | 826 | break; |
333eba21 | 827 | } |
bdda5aca BP |
828 | |
829 | if (error) { | |
830 | ofpacts->size = orig_size; | |
831 | } | |
832 | return error; | |
333eba21 BP |
833 | } |
834 | ||
bdda5aca BP |
835 | /* Parses action 'act', with argument 'arg', and appends a parsed version to |
836 | * 'ofpacts'. | |
837 | * | |
838 | * 'n_actions' specifies the number of actions already parsed (for proper | |
839 | * handling of "drop" actions). | |
840 | * | |
841 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
842 | * error. The caller is responsible for freeing the returned string. */ | |
843 | static char * WARN_UNUSED_RESULT | |
dd43a558 | 844 | str_to_ofpact__(char *pos, char *act, char *arg, |
8dd54666 IY |
845 | struct ofpbuf *ofpacts, int n_actions) |
846 | { | |
847 | int code = ofputil_action_code_from_name(act); | |
848 | if (code >= 0) { | |
bdda5aca | 849 | return parse_named_action(code, arg, ofpacts); |
8dd54666 IY |
850 | } else if (!strcasecmp(act, "drop")) { |
851 | if (n_actions) { | |
bdda5aca BP |
852 | return xstrdup("Drop actions must not be preceded by other " |
853 | "actions"); | |
8dd54666 | 854 | } else if (ofputil_parse_key_value(&pos, &act, &arg)) { |
bdda5aca BP |
855 | return xstrdup("Drop actions must not be followed by other " |
856 | "actions"); | |
8dd54666 | 857 | } |
8dd54666 | 858 | } else { |
4e022ec0 | 859 | ofp_port_t port; |
8010100b | 860 | if (ofputil_port_from_string(act, &port)) { |
8dd54666 IY |
861 | ofpact_put_OUTPUT(ofpacts)->port = port; |
862 | } else { | |
bdda5aca | 863 | return xasprintf("Unknown action: %s", act); |
8dd54666 IY |
864 | } |
865 | } | |
866 | ||
bdda5aca | 867 | return NULL; |
8dd54666 IY |
868 | } |
869 | ||
bdda5aca BP |
870 | /* Parses 'str' as a series of actions, and appends them to 'ofpacts'. |
871 | * | |
872 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
873 | * error. The caller is responsible for freeing the returned string. */ | |
874 | static char * WARN_UNUSED_RESULT | |
dd43a558 | 875 | str_to_ofpacts(char *str, struct ofpbuf *ofpacts) |
f22716dc | 876 | { |
bdda5aca | 877 | size_t orig_size = ofpacts->size; |
0ff22822 | 878 | char *pos, *act, *arg; |
4cceacb9 | 879 | enum ofperr error; |
f22716dc JP |
880 | int n_actions; |
881 | ||
53ddd40a | 882 | pos = str; |
d13803eb | 883 | n_actions = 0; |
0ff22822 | 884 | while (ofputil_parse_key_value(&pos, &act, &arg)) { |
bdda5aca BP |
885 | char *error = str_to_ofpact__(pos, act, arg, ofpacts, n_actions); |
886 | if (error) { | |
887 | ofpacts->size = orig_size; | |
888 | return error; | |
8dd54666 IY |
889 | } |
890 | n_actions++; | |
891 | } | |
4cceacb9 JS |
892 | |
893 | error = ofpacts_verify(ofpacts->data, ofpacts->size); | |
894 | if (error) { | |
bdda5aca BP |
895 | ofpacts->size = orig_size; |
896 | return xstrdup("Incorrect action ordering"); | |
4cceacb9 JS |
897 | } |
898 | ||
8dd54666 | 899 | ofpact_pad(ofpacts); |
bdda5aca | 900 | return NULL; |
8dd54666 IY |
901 | } |
902 | ||
bdda5aca BP |
903 | /* Parses 'arg' as the argument to instruction 'type', and appends such an |
904 | * instruction to 'ofpacts'. | |
905 | * | |
906 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
907 | * error. The caller is responsible for freeing the returned string. */ | |
908 | static char * WARN_UNUSED_RESULT | |
8dd54666 IY |
909 | parse_named_instruction(enum ovs_instruction_type type, |
910 | char *arg, struct ofpbuf *ofpacts) | |
911 | { | |
bdda5aca | 912 | char *error_s = NULL; |
4cceacb9 JS |
913 | enum ofperr error; |
914 | ||
8dd54666 IY |
915 | switch (type) { |
916 | case OVSINST_OFPIT11_APPLY_ACTIONS: | |
917 | NOT_REACHED(); /* This case is handled by str_to_inst_ofpacts() */ | |
918 | break; | |
919 | ||
920 | case OVSINST_OFPIT11_WRITE_ACTIONS: | |
5dca28b5 | 921 | /* XXX */ |
bdda5aca | 922 | error_s = xstrdup("instruction write-actions is not supported yet"); |
8dd54666 IY |
923 | break; |
924 | ||
925 | case OVSINST_OFPIT11_CLEAR_ACTIONS: | |
b19e8793 | 926 | ofpact_put_CLEAR_ACTIONS(ofpacts); |
8dd54666 IY |
927 | break; |
928 | ||
638a19b0 | 929 | case OVSINST_OFPIT13_METER: |
bdda5aca | 930 | error_s = str_to_u32(arg, &ofpact_put_METER(ofpacts)->meter_id); |
638a19b0 JR |
931 | break; |
932 | ||
8dd54666 | 933 | case OVSINST_OFPIT11_WRITE_METADATA: |
bdda5aca | 934 | error_s = parse_metadata(ofpacts, arg); |
8dd54666 IY |
935 | break; |
936 | ||
937 | case OVSINST_OFPIT11_GOTO_TABLE: { | |
938 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
939 | char *table_s = strsep(&arg, ","); | |
940 | if (!table_s || !table_s[0]) { | |
bdda5aca | 941 | return xstrdup("instruction goto-table needs table id"); |
8dd54666 | 942 | } |
bdda5aca | 943 | error_s = str_to_u8(table_s, "table", &ogt->table_id); |
8dd54666 IY |
944 | break; |
945 | } | |
946 | } | |
4cceacb9 | 947 | |
bdda5aca BP |
948 | if (error_s) { |
949 | return error_s; | |
950 | } | |
951 | ||
4cceacb9 JS |
952 | /* If write_metadata is specified as an action AND an instruction, ofpacts |
953 | could be invalid. */ | |
954 | error = ofpacts_verify(ofpacts->data, ofpacts->size); | |
955 | if (error) { | |
bdda5aca | 956 | return xstrdup("Incorrect instruction ordering"); |
4cceacb9 | 957 | } |
bdda5aca | 958 | return NULL; |
8dd54666 IY |
959 | } |
960 | ||
bdda5aca BP |
961 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. |
962 | * | |
963 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
964 | * error. The caller is responsible for freeing the returned string. */ | |
965 | static char * WARN_UNUSED_RESULT | |
dd43a558 | 966 | str_to_inst_ofpacts(char *str, struct ofpbuf *ofpacts) |
8dd54666 | 967 | { |
bdda5aca | 968 | size_t orig_size = ofpacts->size; |
8dd54666 IY |
969 | char *pos, *inst, *arg; |
970 | int type; | |
971 | const char *prev_inst = NULL; | |
972 | int prev_type = -1; | |
973 | int n_actions = 0; | |
974 | ||
975 | pos = str; | |
976 | while (ofputil_parse_key_value(&pos, &inst, &arg)) { | |
ba0bc9b0 | 977 | type = ovs_instruction_type_from_name(inst); |
8dd54666 | 978 | if (type < 0) { |
bdda5aca BP |
979 | char *error = str_to_ofpact__(pos, inst, arg, ofpacts, n_actions); |
980 | if (error) { | |
981 | ofpacts->size = orig_size; | |
982 | return error; | |
8dd54666 IY |
983 | } |
984 | ||
985 | type = OVSINST_OFPIT11_APPLY_ACTIONS; | |
986 | if (prev_type == type) { | |
987 | n_actions++; | |
988 | continue; | |
c6100d92 | 989 | } |
8dd54666 | 990 | } else if (type == OVSINST_OFPIT11_APPLY_ACTIONS) { |
bdda5aca BP |
991 | ofpacts->size = orig_size; |
992 | return xasprintf("%s isn't supported. Just write actions then " | |
993 | "it is interpreted as apply_actions", inst); | |
8dd54666 | 994 | } else { |
bdda5aca BP |
995 | char *error = parse_named_instruction(type, arg, ofpacts); |
996 | if (error) { | |
997 | ofpacts->size = orig_size; | |
998 | return error; | |
999 | } | |
8dd54666 IY |
1000 | } |
1001 | ||
8dd54666 | 1002 | if (type <= prev_type) { |
bdda5aca BP |
1003 | ofpacts->size = orig_size; |
1004 | if (type == prev_type) { | |
1005 | return xasprintf("instruction %s may be specified only once", | |
1006 | inst); | |
1007 | } else { | |
1008 | return xasprintf("instruction %s must be specified before %s", | |
1009 | inst, prev_inst); | |
1010 | } | |
8dd54666 IY |
1011 | } |
1012 | ||
1013 | prev_inst = inst; | |
1014 | prev_type = type; | |
d13803eb | 1015 | n_actions++; |
f22716dc | 1016 | } |
f25d0cf3 | 1017 | ofpact_pad(ofpacts); |
bdda5aca BP |
1018 | |
1019 | return NULL; | |
f22716dc JP |
1020 | } |
1021 | ||
1022 | struct protocol { | |
1023 | const char *name; | |
1024 | uint16_t dl_type; | |
1025 | uint8_t nw_proto; | |
1026 | }; | |
1027 | ||
1028 | static bool | |
1029 | parse_protocol(const char *name, const struct protocol **p_out) | |
1030 | { | |
1031 | static const struct protocol protocols[] = { | |
1032 | { "ip", ETH_TYPE_IP, 0 }, | |
1033 | { "arp", ETH_TYPE_ARP, 0 }, | |
6767a2cc JP |
1034 | { "icmp", ETH_TYPE_IP, IPPROTO_ICMP }, |
1035 | { "tcp", ETH_TYPE_IP, IPPROTO_TCP }, | |
1036 | { "udp", ETH_TYPE_IP, IPPROTO_UDP }, | |
d31f1109 JP |
1037 | { "ipv6", ETH_TYPE_IPV6, 0 }, |
1038 | { "ip6", ETH_TYPE_IPV6, 0 }, | |
1039 | { "icmp6", ETH_TYPE_IPV6, IPPROTO_ICMPV6 }, | |
1040 | { "tcp6", ETH_TYPE_IPV6, IPPROTO_TCP }, | |
1041 | { "udp6", ETH_TYPE_IPV6, IPPROTO_UDP }, | |
8087f5ff | 1042 | { "rarp", ETH_TYPE_RARP, 0}, |
b02475c5 SH |
1043 | { "mpls", ETH_TYPE_MPLS, 0 }, |
1044 | { "mplsm", ETH_TYPE_MPLS_MCAST, 0 }, | |
1045 | }; | |
f22716dc JP |
1046 | const struct protocol *p; |
1047 | ||
1048 | for (p = protocols; p < &protocols[ARRAY_SIZE(protocols)]; p++) { | |
1049 | if (!strcmp(p->name, name)) { | |
1050 | *p_out = p; | |
1051 | return true; | |
1052 | } | |
1053 | } | |
1054 | *p_out = NULL; | |
1055 | return false; | |
1056 | } | |
1057 | ||
bdda5aca BP |
1058 | /* Parses 's' as the (possibly masked) value of field 'mf', and updates |
1059 | * 'match' appropriately. | |
1060 | * | |
1061 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
1062 | * error. The caller is responsible for freeing the returned string. */ | |
1063 | static char * WARN_UNUSED_RESULT | |
81a76618 | 1064 | parse_field(const struct mf_field *mf, const char *s, struct match *match) |
8050b31d | 1065 | { |
6a885fd0 BP |
1066 | union mf_value value, mask; |
1067 | char *error; | |
bad68a99 | 1068 | |
6a885fd0 | 1069 | error = mf_parse(mf, s, &value, &mask); |
bdda5aca BP |
1070 | if (!error) { |
1071 | mf_set(mf, &value, &mask, match); | |
8050b31d | 1072 | } |
bdda5aca | 1073 | return error; |
00b1c62f BP |
1074 | } |
1075 | ||
bdda5aca BP |
1076 | static char * WARN_UNUSED_RESULT |
1077 | parse_ofp_str__(struct ofputil_flow_mod *fm, int command, char *string) | |
f22716dc | 1078 | { |
c821124b BP |
1079 | enum { |
1080 | F_OUT_PORT = 1 << 0, | |
1081 | F_ACTIONS = 1 << 1, | |
c821124b | 1082 | F_TIMEOUT = 1 << 3, |
a993007b BP |
1083 | F_PRIORITY = 1 << 4, |
1084 | F_FLAGS = 1 << 5, | |
c821124b | 1085 | } fields; |
f22716dc | 1086 | char *save_ptr = NULL; |
75a75043 | 1087 | char *act_str = NULL; |
f22716dc | 1088 | char *name; |
f22716dc | 1089 | |
c821124b BP |
1090 | switch (command) { |
1091 | case -1: | |
1092 | fields = F_OUT_PORT; | |
1093 | break; | |
1094 | ||
1095 | case OFPFC_ADD: | |
a993007b | 1096 | fields = F_ACTIONS | F_TIMEOUT | F_PRIORITY | F_FLAGS; |
c821124b BP |
1097 | break; |
1098 | ||
1099 | case OFPFC_DELETE: | |
1100 | fields = F_OUT_PORT; | |
1101 | break; | |
1102 | ||
1103 | case OFPFC_DELETE_STRICT: | |
1104 | fields = F_OUT_PORT | F_PRIORITY; | |
1105 | break; | |
1106 | ||
1107 | case OFPFC_MODIFY: | |
a993007b | 1108 | fields = F_ACTIONS | F_TIMEOUT | F_PRIORITY | F_FLAGS; |
c821124b BP |
1109 | break; |
1110 | ||
1111 | case OFPFC_MODIFY_STRICT: | |
a993007b | 1112 | fields = F_ACTIONS | F_TIMEOUT | F_PRIORITY | F_FLAGS; |
c821124b BP |
1113 | break; |
1114 | ||
1115 | default: | |
1116 | NOT_REACHED(); | |
1117 | } | |
1118 | ||
81a76618 BP |
1119 | match_init_catchall(&fm->match); |
1120 | fm->priority = OFP_DEFAULT_PRIORITY; | |
88ca35ee | 1121 | fm->cookie = htonll(0); |
e729e793 | 1122 | fm->cookie_mask = htonll(0); |
623e1caf JP |
1123 | if (command == OFPFC_MODIFY || command == OFPFC_MODIFY_STRICT) { |
1124 | /* For modify, by default, don't update the cookie. */ | |
1125 | fm->new_cookie = htonll(UINT64_MAX); | |
1126 | } else{ | |
1127 | fm->new_cookie = htonll(0); | |
1128 | } | |
23342857 | 1129 | fm->modify_cookie = false; |
6c1491fb | 1130 | fm->table_id = 0xff; |
c821124b | 1131 | fm->command = command; |
88ca35ee BP |
1132 | fm->idle_timeout = OFP_FLOW_PERMANENT; |
1133 | fm->hard_timeout = OFP_FLOW_PERMANENT; | |
1134 | fm->buffer_id = UINT32_MAX; | |
7f05e7ab | 1135 | fm->out_port = OFPP_ANY; |
88ca35ee | 1136 | fm->flags = 0; |
c821124b | 1137 | if (fields & F_ACTIONS) { |
c821124b | 1138 | act_str = strstr(string, "action"); |
f22716dc | 1139 | if (!act_str) { |
bdda5aca | 1140 | return xstrdup("must specify an action"); |
f22716dc JP |
1141 | } |
1142 | *act_str = '\0'; | |
1143 | ||
1144 | act_str = strchr(act_str + 1, '='); | |
1145 | if (!act_str) { | |
bdda5aca | 1146 | return xstrdup("must specify an action"); |
f22716dc JP |
1147 | } |
1148 | ||
1149 | act_str++; | |
f22716dc | 1150 | } |
f22716dc JP |
1151 | for (name = strtok_r(string, "=, \t\r\n", &save_ptr); name; |
1152 | name = strtok_r(NULL, "=, \t\r\n", &save_ptr)) { | |
1153 | const struct protocol *p; | |
bdda5aca | 1154 | char *error = NULL; |
f22716dc JP |
1155 | |
1156 | if (parse_protocol(name, &p)) { | |
81a76618 | 1157 | match_set_dl_type(&fm->match, htons(p->dl_type)); |
f22716dc | 1158 | if (p->nw_proto) { |
81a76618 | 1159 | match_set_nw_proto(&fm->match, p->nw_proto); |
f22716dc | 1160 | } |
a993007b BP |
1161 | } else if (fields & F_FLAGS && !strcmp(name, "send_flow_rem")) { |
1162 | fm->flags |= OFPFF_SEND_FLOW_REM; | |
1163 | } else if (fields & F_FLAGS && !strcmp(name, "check_overlap")) { | |
1164 | fm->flags |= OFPFF_CHECK_OVERLAP; | |
2e1ae200 JR |
1165 | } else if (fields & F_FLAGS && !strcmp(name, "reset_counts")) { |
1166 | fm->flags |= OFPFF12_RESET_COUNTS; | |
1167 | } else if (fields & F_FLAGS && !strcmp(name, "no_packet_counts")) { | |
1168 | fm->flags |= OFPFF13_NO_PKT_COUNTS; | |
1169 | } else if (fields & F_FLAGS && !strcmp(name, "no_byte_counts")) { | |
1170 | fm->flags |= OFPFF13_NO_BYT_COUNTS; | |
f22716dc | 1171 | } else { |
f22716dc JP |
1172 | char *value; |
1173 | ||
1174 | value = strtok_r(NULL, ", \t\r\n", &save_ptr); | |
1175 | if (!value) { | |
bdda5aca | 1176 | return xasprintf("field %s missing value", name); |
f22716dc JP |
1177 | } |
1178 | ||
6c1491fb | 1179 | if (!strcmp(name, "table")) { |
bdda5aca | 1180 | error = str_to_u8(value, "table", &fm->table_id); |
8050b31d | 1181 | } else if (!strcmp(name, "out_port")) { |
be3f512a | 1182 | if (!ofputil_port_from_string(value, &fm->out_port)) { |
bdda5aca BP |
1183 | error = xasprintf("%s is not a valid OpenFlow port", |
1184 | value); | |
c6100d92 | 1185 | } |
c821124b | 1186 | } else if (fields & F_PRIORITY && !strcmp(name, "priority")) { |
bdda5aca BP |
1187 | uint16_t priority; |
1188 | ||
1189 | error = str_to_u16(value, name, &priority); | |
1190 | fm->priority = priority; | |
c821124b | 1191 | } else if (fields & F_TIMEOUT && !strcmp(name, "idle_timeout")) { |
bdda5aca | 1192 | error = str_to_u16(value, name, &fm->idle_timeout); |
c821124b | 1193 | } else if (fields & F_TIMEOUT && !strcmp(name, "hard_timeout")) { |
bdda5aca | 1194 | error = str_to_u16(value, name, &fm->hard_timeout); |
e729e793 JP |
1195 | } else if (!strcmp(name, "cookie")) { |
1196 | char *mask = strchr(value, '/'); | |
623e1caf | 1197 | |
e729e793 | 1198 | if (mask) { |
623e1caf | 1199 | /* A mask means we're searching for a cookie. */ |
e729e793 | 1200 | if (command == OFPFC_ADD) { |
bdda5aca BP |
1201 | return xstrdup("flow additions cannot use " |
1202 | "a cookie mask"); | |
e729e793 JP |
1203 | } |
1204 | *mask = '\0'; | |
bdda5aca BP |
1205 | error = str_to_be64(value, &fm->cookie); |
1206 | if (error) { | |
1207 | return error; | |
1208 | } | |
1209 | error = str_to_be64(mask + 1, &fm->cookie_mask); | |
e729e793 | 1210 | } else { |
623e1caf JP |
1211 | /* No mask means that the cookie is being set. */ |
1212 | if (command != OFPFC_ADD && command != OFPFC_MODIFY | |
bdda5aca BP |
1213 | && command != OFPFC_MODIFY_STRICT) { |
1214 | return xstrdup("cannot set cookie"); | |
623e1caf | 1215 | } |
bdda5aca | 1216 | error = str_to_be64(value, &fm->new_cookie); |
23342857 | 1217 | fm->modify_cookie = true; |
e729e793 | 1218 | } |
6a885fd0 | 1219 | } else if (mf_from_name(name)) { |
bdda5aca | 1220 | error = parse_field(mf_from_name(name), value, &fm->match); |
2c6d8411 BP |
1221 | } else if (!strcmp(name, "duration") |
1222 | || !strcmp(name, "n_packets") | |
146356e9 JP |
1223 | || !strcmp(name, "n_bytes") |
1224 | || !strcmp(name, "idle_age") | |
1225 | || !strcmp(name, "hard_age")) { | |
2c6d8411 BP |
1226 | /* Ignore these, so that users can feed the output of |
1227 | * "ovs-ofctl dump-flows" back into commands that parse | |
1228 | * flows. */ | |
f22716dc | 1229 | } else { |
bdda5aca BP |
1230 | error = xasprintf("unknown keyword %s", name); |
1231 | } | |
1232 | ||
1233 | if (error) { | |
1234 | return error; | |
f22716dc JP |
1235 | } |
1236 | } | |
1237 | } | |
623e1caf | 1238 | if (!fm->cookie_mask && fm->new_cookie == htonll(UINT64_MAX) |
bdda5aca | 1239 | && (command == OFPFC_MODIFY || command == OFPFC_MODIFY_STRICT)) { |
623e1caf JP |
1240 | /* On modifies without a mask, we are supposed to add a flow if |
1241 | * one does not exist. If a cookie wasn't been specified, use a | |
1242 | * default of zero. */ | |
1243 | fm->new_cookie = htonll(0); | |
1244 | } | |
75a75043 | 1245 | if (fields & F_ACTIONS) { |
f25d0cf3 | 1246 | struct ofpbuf ofpacts; |
bdda5aca | 1247 | char *error; |
75a75043 | 1248 | |
f25d0cf3 | 1249 | ofpbuf_init(&ofpacts, 32); |
bdda5aca BP |
1250 | error = str_to_inst_ofpacts(act_str, &ofpacts); |
1251 | if (!error) { | |
1252 | enum ofperr err; | |
1253 | ||
1254 | err = ofpacts_check(ofpacts.data, ofpacts.size, &fm->match.flow, | |
1255 | OFPP_MAX, 0); | |
1256 | if (err) { | |
1257 | error = xasprintf("actions are invalid with specified match " | |
1258 | "(%s)", ofperr_to_string(err)); | |
1259 | } | |
1260 | } | |
1261 | if (error) { | |
1262 | ofpbuf_uninit(&ofpacts); | |
1263 | return error; | |
b019d34d SH |
1264 | } |
1265 | ||
bdda5aca BP |
1266 | fm->ofpacts_len = ofpacts.size; |
1267 | fm->ofpacts = ofpbuf_steal_data(&ofpacts); | |
75a75043 | 1268 | } else { |
f25d0cf3 BP |
1269 | fm->ofpacts_len = 0; |
1270 | fm->ofpacts = NULL; | |
75a75043 | 1271 | } |
ec610b7b | 1272 | |
bdda5aca | 1273 | return NULL; |
f22716dc | 1274 | } |
15f1f1b6 | 1275 | |
638a19b0 | 1276 | /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man |
bdda5aca BP |
1277 | * page) into 'fm' for sending the specified flow_mod 'command' to a switch. |
1278 | * | |
1279 | * To parse syntax for an OFPT_FLOW_MOD (or NXT_FLOW_MOD), use an OFPFC_* | |
1280 | * constant for 'command'. To parse syntax for an OFPST_FLOW or | |
1281 | * OFPST_AGGREGATE (or NXST_FLOW or NXST_AGGREGATE), use -1 for 'command'. | |
1282 | * | |
1283 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
1284 | * error. The caller is responsible for freeing the returned string. */ | |
1285 | char * WARN_UNUSED_RESULT | |
1286 | parse_ofp_str(struct ofputil_flow_mod *fm, int command, const char *str_) | |
1287 | { | |
1288 | char *string = xstrdup(str_); | |
1289 | char *error; | |
1290 | ||
1291 | error = parse_ofp_str__(fm, command, string); | |
1292 | if (error) { | |
1293 | fm->ofpacts = NULL; | |
1294 | fm->ofpacts_len = 0; | |
1295 | } | |
1296 | ||
1297 | free(string); | |
1298 | return error; | |
1299 | } | |
1300 | ||
1301 | static char * WARN_UNUSED_RESULT | |
1302 | parse_ofp_meter_mod_str__(struct ofputil_meter_mod *mm, char *string, | |
1303 | struct ofpbuf *bands, int command) | |
638a19b0 JR |
1304 | { |
1305 | enum { | |
1306 | F_METER = 1 << 0, | |
1307 | F_FLAGS = 1 << 1, | |
1308 | F_BANDS = 1 << 2, | |
1309 | } fields; | |
638a19b0 JR |
1310 | char *save_ptr = NULL; |
1311 | char *band_str = NULL; | |
1312 | char *name; | |
1313 | ||
1314 | switch (command) { | |
1315 | case -1: | |
1316 | fields = F_METER; | |
1317 | break; | |
1318 | ||
1319 | case OFPMC13_ADD: | |
1320 | fields = F_METER | F_FLAGS | F_BANDS; | |
1321 | break; | |
1322 | ||
1323 | case OFPMC13_DELETE: | |
1324 | fields = F_METER; | |
1325 | break; | |
1326 | ||
1327 | case OFPMC13_MODIFY: | |
1328 | fields = F_METER | F_FLAGS | F_BANDS; | |
1329 | break; | |
1330 | ||
1331 | default: | |
1332 | NOT_REACHED(); | |
1333 | } | |
1334 | ||
1335 | mm->command = command; | |
1336 | mm->meter.meter_id = 0; | |
1337 | mm->meter.flags = 0; | |
1338 | if (fields & F_BANDS) { | |
1339 | band_str = strstr(string, "band"); | |
1340 | if (!band_str) { | |
bdda5aca | 1341 | return xstrdup("must specify bands"); |
638a19b0 JR |
1342 | } |
1343 | *band_str = '\0'; | |
1344 | ||
1345 | band_str = strchr(band_str + 1, '='); | |
1346 | if (!band_str) { | |
bdda5aca | 1347 | return xstrdup("must specify bands"); |
638a19b0 JR |
1348 | } |
1349 | ||
1350 | band_str++; | |
1351 | } | |
1352 | for (name = strtok_r(string, "=, \t\r\n", &save_ptr); name; | |
1353 | name = strtok_r(NULL, "=, \t\r\n", &save_ptr)) { | |
1354 | ||
1355 | if (fields & F_FLAGS && !strcmp(name, "kbps")) { | |
1356 | mm->meter.flags |= OFPMF13_KBPS; | |
1357 | } else if (fields & F_FLAGS && !strcmp(name, "pktps")) { | |
1358 | mm->meter.flags |= OFPMF13_PKTPS; | |
1359 | } else if (fields & F_FLAGS && !strcmp(name, "burst")) { | |
1360 | mm->meter.flags |= OFPMF13_BURST; | |
1361 | } else if (fields & F_FLAGS && !strcmp(name, "stats")) { | |
1362 | mm->meter.flags |= OFPMF13_STATS; | |
1363 | } else { | |
1364 | char *value; | |
1365 | ||
1366 | value = strtok_r(NULL, ", \t\r\n", &save_ptr); | |
1367 | if (!value) { | |
bdda5aca | 1368 | return xasprintf("field %s missing value", name); |
638a19b0 JR |
1369 | } |
1370 | ||
1371 | if (!strcmp(name, "meter")) { | |
1372 | if (!strcmp(value, "all")) { | |
1373 | mm->meter.meter_id = OFPM13_ALL; | |
1374 | } else if (!strcmp(value, "controller")) { | |
1375 | mm->meter.meter_id = OFPM13_CONTROLLER; | |
1376 | } else if (!strcmp(value, "slowpath")) { | |
1377 | mm->meter.meter_id = OFPM13_SLOWPATH; | |
1378 | } else { | |
bdda5aca BP |
1379 | char *error = str_to_u32(value, &mm->meter.meter_id); |
1380 | if (error) { | |
1381 | return error; | |
1382 | } | |
638a19b0 | 1383 | if (mm->meter.meter_id > OFPM13_MAX) { |
bdda5aca | 1384 | return xasprintf("invalid value for %s", name); |
638a19b0 JR |
1385 | } |
1386 | } | |
1387 | } else { | |
bdda5aca | 1388 | return xasprintf("unknown keyword %s", name); |
638a19b0 JR |
1389 | } |
1390 | } | |
1391 | } | |
1392 | if (fields & F_METER && !mm->meter.meter_id) { | |
bdda5aca | 1393 | return xstrdup("must specify 'meter'"); |
638a19b0 JR |
1394 | } |
1395 | if (fields & F_FLAGS && !mm->meter.flags) { | |
bdda5aca | 1396 | return xstrdup("meter must specify either 'kbps' or 'pktps'"); |
638a19b0 JR |
1397 | } |
1398 | ||
1399 | if (fields & F_BANDS) { | |
638a19b0 JR |
1400 | uint16_t n_bands = 0; |
1401 | struct ofputil_meter_band *band = NULL; | |
1402 | int i; | |
1403 | ||
638a19b0 JR |
1404 | for (name = strtok_r(band_str, "=, \t\r\n", &save_ptr); name; |
1405 | name = strtok_r(NULL, "=, \t\r\n", &save_ptr)) { | |
1406 | ||
1407 | char *value; | |
1408 | ||
1409 | value = strtok_r(NULL, ", \t\r\n", &save_ptr); | |
1410 | if (!value) { | |
bdda5aca | 1411 | return xasprintf("field %s missing value", name); |
638a19b0 JR |
1412 | } |
1413 | ||
1414 | if (!strcmp(name, "type")) { | |
1415 | /* Start a new band */ | |
bdda5aca | 1416 | band = ofpbuf_put_zeros(bands, sizeof *band); |
638a19b0 JR |
1417 | n_bands++; |
1418 | ||
1419 | if (!strcmp(value, "drop")) { | |
1420 | band->type = OFPMBT13_DROP; | |
1421 | } else if (!strcmp(value, "dscp_remark")) { | |
1422 | band->type = OFPMBT13_DSCP_REMARK; | |
1423 | } else { | |
bdda5aca | 1424 | return xasprintf("field %s unknown value %s", name, value); |
638a19b0 JR |
1425 | } |
1426 | } else if (!band || !band->type) { | |
bdda5aca | 1427 | return xstrdup("band must start with the 'type' keyword"); |
638a19b0 | 1428 | } else if (!strcmp(name, "rate")) { |
bdda5aca BP |
1429 | char *error = str_to_u32(value, &band->rate); |
1430 | if (error) { | |
1431 | return error; | |
1432 | } | |
638a19b0 | 1433 | } else if (!strcmp(name, "burst_size")) { |
bdda5aca BP |
1434 | char *error = str_to_u32(value, &band->burst_size); |
1435 | if (error) { | |
1436 | return error; | |
1437 | } | |
638a19b0 | 1438 | } else if (!strcmp(name, "prec_level")) { |
bdda5aca BP |
1439 | char *error = str_to_u8(value, name, &band->prec_level); |
1440 | if (error) { | |
1441 | return error; | |
1442 | } | |
638a19b0 | 1443 | } else { |
bdda5aca | 1444 | return xasprintf("unknown keyword %s", name); |
638a19b0 JR |
1445 | } |
1446 | } | |
1447 | /* validate bands */ | |
1448 | if (!n_bands) { | |
bdda5aca | 1449 | return xstrdup("meter must have bands"); |
638a19b0 JR |
1450 | } |
1451 | ||
1452 | mm->meter.n_bands = n_bands; | |
bdda5aca | 1453 | mm->meter.bands = ofpbuf_steal_data(bands); |
638a19b0 JR |
1454 | |
1455 | for (i = 0; i < n_bands; ++i) { | |
1456 | band = &mm->meter.bands[i]; | |
1457 | ||
1458 | if (!band->type) { | |
bdda5aca | 1459 | return xstrdup("band must have 'type'"); |
638a19b0 JR |
1460 | } |
1461 | if (band->type == OFPMBT13_DSCP_REMARK) { | |
1462 | if (!band->prec_level) { | |
bdda5aca BP |
1463 | return xstrdup("'dscp_remark' band must have" |
1464 | " 'prec_level'"); | |
638a19b0 JR |
1465 | } |
1466 | } else { | |
1467 | if (band->prec_level) { | |
bdda5aca BP |
1468 | return xstrdup("Only 'dscp_remark' band may have" |
1469 | " 'prec_level'"); | |
638a19b0 JR |
1470 | } |
1471 | } | |
1472 | if (!band->rate) { | |
bdda5aca | 1473 | return xstrdup("band must have 'rate'"); |
638a19b0 JR |
1474 | } |
1475 | if (mm->meter.flags & OFPMF13_BURST) { | |
1476 | if (!band->burst_size) { | |
bdda5aca BP |
1477 | return xstrdup("band must have 'burst_size' " |
1478 | "when 'burst' flag is set"); | |
638a19b0 JR |
1479 | } |
1480 | } else { | |
1481 | if (band->burst_size) { | |
bdda5aca BP |
1482 | return xstrdup("band may have 'burst_size' only " |
1483 | "when 'burst' flag is set"); | |
638a19b0 JR |
1484 | } |
1485 | } | |
1486 | } | |
1487 | } else { | |
1488 | mm->meter.n_bands = 0; | |
1489 | mm->meter.bands = NULL; | |
1490 | } | |
1491 | ||
bdda5aca BP |
1492 | return NULL; |
1493 | } | |
1494 | ||
1495 | /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man | |
1496 | * page) into 'mm' for sending the specified meter_mod 'command' to a switch. | |
1497 | * | |
1498 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
1499 | * error. The caller is responsible for freeing the returned string. */ | |
1500 | char * WARN_UNUSED_RESULT | |
1501 | parse_ofp_meter_mod_str(struct ofputil_meter_mod *mm, const char *str_, | |
1502 | int command) | |
1503 | { | |
1504 | struct ofpbuf bands; | |
1505 | char *string; | |
1506 | char *error; | |
1507 | ||
1508 | ofpbuf_init(&bands, 64); | |
1509 | string = xstrdup(str_); | |
1510 | ||
1511 | error = parse_ofp_meter_mod_str__(mm, string, &bands, command); | |
1512 | ||
638a19b0 | 1513 | free(string); |
bdda5aca BP |
1514 | ofpbuf_uninit(&bands); |
1515 | ||
1516 | return error; | |
638a19b0 JR |
1517 | } |
1518 | ||
bdda5aca BP |
1519 | static char * WARN_UNUSED_RESULT |
1520 | parse_flow_monitor_request__(struct ofputil_flow_monitor_request *fmr, | |
1521 | const char *str_, char *string) | |
2b07c8b1 | 1522 | { |
97be1538 | 1523 | static atomic_uint32_t id = ATOMIC_VAR_INIT(0); |
2b07c8b1 BP |
1524 | char *save_ptr = NULL; |
1525 | char *name; | |
1526 | ||
97be1538 | 1527 | atomic_add(&id, 1, &fmr->id); |
a944ef40 | 1528 | |
2b07c8b1 BP |
1529 | fmr->flags = (NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY |
1530 | | NXFMF_OWN | NXFMF_ACTIONS); | |
1531 | fmr->out_port = OFPP_NONE; | |
1532 | fmr->table_id = 0xff; | |
81a76618 | 1533 | match_init_catchall(&fmr->match); |
2b07c8b1 BP |
1534 | |
1535 | for (name = strtok_r(string, "=, \t\r\n", &save_ptr); name; | |
1536 | name = strtok_r(NULL, "=, \t\r\n", &save_ptr)) { | |
1537 | const struct protocol *p; | |
1538 | ||
1539 | if (!strcmp(name, "!initial")) { | |
1540 | fmr->flags &= ~NXFMF_INITIAL; | |
1541 | } else if (!strcmp(name, "!add")) { | |
1542 | fmr->flags &= ~NXFMF_ADD; | |
1543 | } else if (!strcmp(name, "!delete")) { | |
1544 | fmr->flags &= ~NXFMF_DELETE; | |
1545 | } else if (!strcmp(name, "!modify")) { | |
1546 | fmr->flags &= ~NXFMF_MODIFY; | |
1547 | } else if (!strcmp(name, "!actions")) { | |
1548 | fmr->flags &= ~NXFMF_ACTIONS; | |
1549 | } else if (!strcmp(name, "!own")) { | |
1550 | fmr->flags &= ~NXFMF_OWN; | |
1551 | } else if (parse_protocol(name, &p)) { | |
81a76618 | 1552 | match_set_dl_type(&fmr->match, htons(p->dl_type)); |
2b07c8b1 | 1553 | if (p->nw_proto) { |
81a76618 | 1554 | match_set_nw_proto(&fmr->match, p->nw_proto); |
2b07c8b1 BP |
1555 | } |
1556 | } else { | |
1557 | char *value; | |
1558 | ||
1559 | value = strtok_r(NULL, ", \t\r\n", &save_ptr); | |
1560 | if (!value) { | |
bdda5aca | 1561 | return xasprintf("%s: field %s missing value", str_, name); |
2b07c8b1 BP |
1562 | } |
1563 | ||
1564 | if (!strcmp(name, "table")) { | |
bdda5aca BP |
1565 | char *error = str_to_u8(value, "table", &fmr->table_id); |
1566 | if (error) { | |
1567 | return error; | |
1568 | } | |
2b07c8b1 | 1569 | } else if (!strcmp(name, "out_port")) { |
4e022ec0 | 1570 | fmr->out_port = u16_to_ofp(atoi(value)); |
2b07c8b1 | 1571 | } else if (mf_from_name(name)) { |
bdda5aca BP |
1572 | char *error; |
1573 | ||
1574 | error = parse_field(mf_from_name(name), value, &fmr->match); | |
1575 | if (error) { | |
1576 | return error; | |
1577 | } | |
2b07c8b1 | 1578 | } else { |
bdda5aca | 1579 | return xasprintf("%s: unknown keyword %s", str_, name); |
2b07c8b1 BP |
1580 | } |
1581 | } | |
1582 | } | |
bdda5aca BP |
1583 | return NULL; |
1584 | } | |
1585 | ||
1586 | /* Convert 'str_' (as described in the documentation for the "monitor" command | |
1587 | * in the ovs-ofctl man page) into 'fmr'. | |
1588 | * | |
1589 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
1590 | * error. The caller is responsible for freeing the returned string. */ | |
1591 | char * WARN_UNUSED_RESULT | |
1592 | parse_flow_monitor_request(struct ofputil_flow_monitor_request *fmr, | |
1593 | const char *str_) | |
1594 | { | |
1595 | char *string = xstrdup(str_); | |
1596 | char *error = parse_flow_monitor_request__(fmr, str_, string); | |
2b07c8b1 | 1597 | free(string); |
bdda5aca | 1598 | return error; |
2b07c8b1 BP |
1599 | } |
1600 | ||
0c3d5fc8 BP |
1601 | /* Parses 's' as a set of OpenFlow actions and appends the actions to |
1602 | * 'actions'. | |
1603 | * | |
bdda5aca BP |
1604 | * Returns NULL if successful, otherwise a malloc()'d string describing the |
1605 | * error. The caller is responsible for freeing the returned string. */ | |
1606 | char * WARN_UNUSED_RESULT | |
f25d0cf3 | 1607 | parse_ofpacts(const char *s_, struct ofpbuf *ofpacts) |
0c3d5fc8 BP |
1608 | { |
1609 | char *s = xstrdup(s_); | |
bdda5aca | 1610 | char *error = str_to_ofpacts(s, ofpacts); |
0c3d5fc8 | 1611 | free(s); |
bdda5aca BP |
1612 | |
1613 | return error; | |
0c3d5fc8 BP |
1614 | } |
1615 | ||
88ca35ee | 1616 | /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command' |
bdda5aca BP |
1617 | * (one of OFPFC_*) into 'fm'. |
1618 | * | |
1619 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
1620 | * error. The caller is responsible for freeing the returned string. */ | |
1621 | char * WARN_UNUSED_RESULT | |
27527aa0 | 1622 | parse_ofp_flow_mod_str(struct ofputil_flow_mod *fm, const char *string, |
bdda5aca | 1623 | uint16_t command) |
15f1f1b6 | 1624 | { |
bdda5aca BP |
1625 | char *error = parse_ofp_str(fm, command, string); |
1626 | if (!error) { | |
1627 | /* Normalize a copy of the match. This ensures that non-normalized | |
1628 | * flows get logged but doesn't affect what gets sent to the switch, so | |
1629 | * that the switch can do whatever it likes with the flow. */ | |
1630 | struct match match_copy = fm->match; | |
1631 | ofputil_normalize_match(&match_copy); | |
1632 | } | |
88ca35ee | 1633 | |
bdda5aca | 1634 | return error; |
15f1f1b6 BP |
1635 | } |
1636 | ||
bdda5aca BP |
1637 | /* Opens file 'file_name' and reads each line as a flow_mod of the specified |
1638 | * type (one of OFPFC_*). Stores each flow_mod in '*fm', an array allocated | |
1639 | * on the caller's behalf, and the number of flow_mods in '*n_fms'. | |
1640 | * | |
1641 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
1642 | * error. The caller is responsible for freeing the returned string. */ | |
1643 | char * WARN_UNUSED_RESULT | |
27527aa0 BP |
1644 | parse_ofp_flow_mod_file(const char *file_name, uint16_t command, |
1645 | struct ofputil_flow_mod **fms, size_t *n_fms) | |
15f1f1b6 | 1646 | { |
27527aa0 | 1647 | size_t allocated_fms; |
bdda5aca | 1648 | int line_number; |
27527aa0 | 1649 | FILE *stream; |
dd8101bc | 1650 | struct ds s; |
15f1f1b6 | 1651 | |
bdda5aca BP |
1652 | *fms = NULL; |
1653 | *n_fms = 0; | |
1654 | ||
27527aa0 BP |
1655 | stream = !strcmp(file_name, "-") ? stdin : fopen(file_name, "r"); |
1656 | if (stream == NULL) { | |
bdda5aca BP |
1657 | return xasprintf("%s: open failed (%s)", |
1658 | file_name, ovs_strerror(errno)); | |
27527aa0 BP |
1659 | } |
1660 | ||
1661 | allocated_fms = *n_fms; | |
dd8101bc | 1662 | ds_init(&s); |
bdda5aca BP |
1663 | line_number = 0; |
1664 | while (!ds_get_preprocessed_line(&s, stream, &line_number)) { | |
1665 | char *error; | |
1666 | ||
27527aa0 BP |
1667 | if (*n_fms >= allocated_fms) { |
1668 | *fms = x2nrealloc(*fms, &allocated_fms, sizeof **fms); | |
1669 | } | |
bdda5aca BP |
1670 | error = parse_ofp_flow_mod_str(&(*fms)[*n_fms], ds_cstr(&s), command); |
1671 | if (error) { | |
1672 | size_t i; | |
1673 | ||
1674 | for (i = 0; i < *n_fms; i++) { | |
1675 | free((*fms)[i].ofpacts); | |
1676 | } | |
1677 | free(*fms); | |
1678 | *fms = NULL; | |
1679 | *n_fms = 0; | |
1680 | ||
1681 | ds_destroy(&s); | |
1682 | if (stream != stdin) { | |
1683 | fclose(stream); | |
1684 | } | |
1685 | ||
1686 | return xasprintf("%s:%d: %s", file_name, line_number, error); | |
1687 | } | |
27527aa0 | 1688 | *n_fms += 1; |
15f1f1b6 | 1689 | } |
15f1f1b6 | 1690 | |
bdda5aca | 1691 | ds_destroy(&s); |
27527aa0 BP |
1692 | if (stream != stdin) { |
1693 | fclose(stream); | |
1694 | } | |
bdda5aca | 1695 | return NULL; |
88ca35ee BP |
1696 | } |
1697 | ||
bdda5aca | 1698 | char * WARN_UNUSED_RESULT |
81d1ea94 | 1699 | parse_ofp_flow_stats_request_str(struct ofputil_flow_stats_request *fsr, |
a7fc1744 | 1700 | bool aggregate, const char *string) |
88ca35ee | 1701 | { |
a9a2da38 | 1702 | struct ofputil_flow_mod fm; |
bdda5aca BP |
1703 | char *error; |
1704 | ||
1705 | error = parse_ofp_str(&fm, -1, string); | |
1706 | if (error) { | |
1707 | return error; | |
1708 | } | |
88ca35ee | 1709 | |
88ca35ee | 1710 | fsr->aggregate = aggregate; |
e729e793 JP |
1711 | fsr->cookie = fm.cookie; |
1712 | fsr->cookie_mask = fm.cookie_mask; | |
81a76618 | 1713 | fsr->match = fm.match; |
88ca35ee | 1714 | fsr->out_port = fm.out_port; |
6c1491fb | 1715 | fsr->table_id = fm.table_id; |
bdda5aca | 1716 | return NULL; |
15f1f1b6 | 1717 | } |
ccbe50f8 BP |
1718 | |
1719 | /* Parses a specification of a flow from 's' into 'flow'. 's' must take the | |
1720 | * form FIELD=VALUE[,FIELD=VALUE]... where each FIELD is the name of a | |
1721 | * mf_field. Fields must be specified in a natural order for satisfying | |
1722 | * prerequisites. | |
1723 | * | |
1724 | * Returns NULL on success, otherwise a malloc()'d string that explains the | |
1725 | * problem. */ | |
1726 | char * | |
1727 | parse_ofp_exact_flow(struct flow *flow, const char *s) | |
1728 | { | |
1729 | char *pos, *key, *value_s; | |
1730 | char *error = NULL; | |
1731 | char *copy; | |
1732 | ||
1733 | memset(flow, 0, sizeof *flow); | |
1734 | ||
1735 | pos = copy = xstrdup(s); | |
1736 | while (ofputil_parse_key_value(&pos, &key, &value_s)) { | |
1737 | const struct protocol *p; | |
1738 | if (parse_protocol(key, &p)) { | |
1739 | if (flow->dl_type) { | |
1740 | error = xasprintf("%s: Ethernet type set multiple times", s); | |
1741 | goto exit; | |
1742 | } | |
1743 | flow->dl_type = htons(p->dl_type); | |
1744 | ||
1745 | if (p->nw_proto) { | |
1746 | if (flow->nw_proto) { | |
1747 | error = xasprintf("%s: network protocol set " | |
1748 | "multiple times", s); | |
1749 | goto exit; | |
1750 | } | |
1751 | flow->nw_proto = p->nw_proto; | |
1752 | } | |
1753 | } else { | |
1754 | const struct mf_field *mf; | |
1755 | union mf_value value; | |
1756 | char *field_error; | |
1757 | ||
1758 | mf = mf_from_name(key); | |
1759 | if (!mf) { | |
1760 | error = xasprintf("%s: unknown field %s", s, key); | |
1761 | goto exit; | |
1762 | } | |
1763 | ||
1764 | if (!mf_are_prereqs_ok(mf, flow)) { | |
1765 | error = xasprintf("%s: prerequisites not met for setting %s", | |
1766 | s, key); | |
1767 | goto exit; | |
1768 | } | |
1769 | ||
1770 | if (!mf_is_zero(mf, flow)) { | |
1771 | error = xasprintf("%s: field %s set multiple times", s, key); | |
1772 | goto exit; | |
1773 | } | |
1774 | ||
1775 | field_error = mf_parse_value(mf, value_s, &value); | |
1776 | if (field_error) { | |
1777 | error = xasprintf("%s: bad value for %s (%s)", | |
1778 | s, key, field_error); | |
1779 | free(field_error); | |
1780 | goto exit; | |
1781 | } | |
1782 | ||
1783 | mf_set_flow_value(mf, &value, flow); | |
1784 | } | |
1785 | } | |
1786 | ||
4e022ec0 AW |
1787 | if (!flow->in_port.ofp_port) { |
1788 | flow->in_port.ofp_port = OFPP_NONE; | |
72d64e33 EJ |
1789 | } |
1790 | ||
ccbe50f8 BP |
1791 | exit: |
1792 | free(copy); | |
1793 | ||
1794 | if (error) { | |
1795 | memset(flow, 0, sizeof *flow); | |
1796 | } | |
1797 | return error; | |
1798 | } |