]>
Commit | Line | Data |
---|---|---|
f25d0cf3 | 1 | /* |
9ff262f4 | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc. |
f25d0cf3 BP |
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 | #include "ofp-actions.h" | |
19 | #include "autopath.h" | |
20 | #include "bundle.h" | |
21 | #include "byte-order.h" | |
22 | #include "compiler.h" | |
23 | #include "dynamic-string.h" | |
24 | #include "learn.h" | |
25 | #include "meta-flow.h" | |
26 | #include "multipath.h" | |
27 | #include "nx-match.h" | |
28 | #include "ofp-util.h" | |
29 | #include "ofpbuf.h" | |
30 | #include "vlog.h" | |
31 | ||
32 | VLOG_DEFINE_THIS_MODULE(ofp_actions); | |
33 | ||
34 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
35 | \f | |
36 | /* Converting OpenFlow 1.0 to ofpacts. */ | |
37 | ||
38 | static enum ofperr | |
d01c980f | 39 | output_from_openflow10(const struct ofp10_action_output *oao, |
f25d0cf3 BP |
40 | struct ofpbuf *out) |
41 | { | |
42 | struct ofpact_output *output; | |
43 | ||
44 | output = ofpact_put_OUTPUT(out); | |
45 | output->port = ntohs(oao->port); | |
46 | output->max_len = ntohs(oao->max_len); | |
47 | ||
48 | return ofputil_check_output_port(output->port, OFPP_MAX); | |
49 | } | |
50 | ||
51 | static enum ofperr | |
52 | enqueue_from_openflow10(const struct ofp_action_enqueue *oae, | |
53 | struct ofpbuf *out) | |
54 | { | |
55 | struct ofpact_enqueue *enqueue; | |
56 | ||
57 | enqueue = ofpact_put_ENQUEUE(out); | |
58 | enqueue->port = ntohs(oae->port); | |
59 | enqueue->queue = ntohl(oae->queue_id); | |
60 | if (enqueue->port >= OFPP_MAX && enqueue->port != OFPP_IN_PORT | |
61 | && enqueue->port != OFPP_LOCAL) { | |
62 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
63 | } | |
64 | return 0; | |
65 | } | |
66 | ||
67 | static void | |
68 | resubmit_from_openflow(const struct nx_action_resubmit *nar, | |
69 | struct ofpbuf *out) | |
70 | { | |
71 | struct ofpact_resubmit *resubmit; | |
72 | ||
73 | resubmit = ofpact_put_RESUBMIT(out); | |
74 | resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT; | |
75 | resubmit->in_port = ntohs(nar->in_port); | |
76 | resubmit->table_id = 0xff; | |
77 | } | |
78 | ||
79 | static enum ofperr | |
80 | resubmit_table_from_openflow(const struct nx_action_resubmit *nar, | |
81 | struct ofpbuf *out) | |
82 | { | |
83 | struct ofpact_resubmit *resubmit; | |
84 | ||
85 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { | |
86 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
87 | } | |
88 | ||
89 | resubmit = ofpact_put_RESUBMIT(out); | |
90 | resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT_TABLE; | |
91 | resubmit->in_port = ntohs(nar->in_port); | |
92 | resubmit->table_id = nar->table; | |
93 | return 0; | |
94 | } | |
95 | ||
96 | static enum ofperr | |
97 | output_reg_from_openflow(const struct nx_action_output_reg *naor, | |
98 | struct ofpbuf *out) | |
99 | { | |
100 | struct ofpact_output_reg *output_reg; | |
101 | ||
102 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { | |
103 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
104 | } | |
105 | ||
106 | output_reg = ofpact_put_OUTPUT_REG(out); | |
107 | output_reg->src.field = mf_from_nxm_header(ntohl(naor->src)); | |
108 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
109 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
110 | output_reg->max_len = ntohs(naor->max_len); | |
111 | ||
112 | return mf_check_src(&output_reg->src, NULL); | |
113 | } | |
114 | ||
115 | static void | |
116 | fin_timeout_from_openflow(const struct nx_action_fin_timeout *naft, | |
117 | struct ofpbuf *out) | |
118 | { | |
119 | struct ofpact_fin_timeout *oft; | |
120 | ||
121 | oft = ofpact_put_FIN_TIMEOUT(out); | |
122 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
123 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
124 | } | |
125 | ||
126 | static void | |
127 | controller_from_openflow(const struct nx_action_controller *nac, | |
128 | struct ofpbuf *out) | |
129 | { | |
130 | struct ofpact_controller *oc; | |
131 | ||
132 | oc = ofpact_put_CONTROLLER(out); | |
133 | oc->max_len = ntohs(nac->max_len); | |
134 | oc->controller_id = ntohs(nac->controller_id); | |
135 | oc->reason = nac->reason; | |
136 | } | |
137 | ||
138 | static void | |
139 | note_from_openflow(const struct nx_action_note *nan, struct ofpbuf *out) | |
140 | { | |
141 | struct ofpact_note *note; | |
142 | unsigned int length; | |
143 | ||
144 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
145 | note = ofpact_put(out, OFPACT_NOTE, | |
146 | offsetof(struct ofpact_note, data) + length); | |
147 | note->length = length; | |
148 | memcpy(note->data, nan->note, length); | |
149 | } | |
150 | ||
c2d967a5 MM |
151 | static enum ofperr |
152 | dec_ttl_from_openflow(struct ofpbuf *out) | |
153 | { | |
154 | uint16_t id = 0; | |
155 | struct ofpact_cnt_ids *ids; | |
156 | enum ofperr error = 0; | |
157 | ||
158 | ids = ofpact_put_DEC_TTL(out); | |
159 | ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL; | |
160 | ids->n_controllers = 1; | |
161 | ofpbuf_put(out, &id, sizeof id); | |
162 | ids = out->l2; | |
163 | ofpact_update_len(out, &ids->ofpact); | |
164 | return error; | |
165 | } | |
166 | ||
167 | static enum ofperr | |
168 | dec_ttl_cnt_ids_from_openflow(const struct nx_action_cnt_ids *nac_ids, | |
169 | struct ofpbuf *out) | |
170 | { | |
171 | struct ofpact_cnt_ids *ids; | |
172 | size_t ids_size; | |
173 | int i; | |
174 | ||
175 | ids = ofpact_put_DEC_TTL(out); | |
176 | ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS; | |
177 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
178 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
179 | ||
180 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
181 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
182 | } | |
183 | ||
184 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
185 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %zu bytes " | |
186 | "allocated for controller ids. %zu bytes are required for " | |
187 | "%"PRIu16" controllers.", ids_size, | |
188 | ids->n_controllers * sizeof(ovs_be16), ids->n_controllers); | |
189 | return OFPERR_OFPBAC_BAD_LEN; | |
190 | } | |
191 | ||
192 | for (i = 0; i < ids->n_controllers; i++) { | |
193 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
194 | ofpbuf_put(out, &id, sizeof id); | |
195 | } | |
196 | ||
197 | ids = out->l2; | |
198 | ofpact_update_len(out, &ids->ofpact); | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
f25d0cf3 BP |
203 | static enum ofperr |
204 | decode_nxast_action(const union ofp_action *a, enum ofputil_action_code *code) | |
205 | { | |
206 | const struct nx_action_header *nah = (const struct nx_action_header *) a; | |
207 | uint16_t len = ntohs(a->header.len); | |
208 | ||
209 | if (len < sizeof(struct nx_action_header)) { | |
210 | return OFPERR_OFPBAC_BAD_LEN; | |
211 | } else if (a->vendor.vendor != CONSTANT_HTONL(NX_VENDOR_ID)) { | |
212 | return OFPERR_OFPBAC_BAD_VENDOR; | |
213 | } | |
214 | ||
215 | switch (nah->subtype) { | |
216 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
217 | case CONSTANT_HTONS(ENUM): \ | |
218 | if (EXTENSIBLE \ | |
219 | ? len >= sizeof(struct STRUCT) \ | |
220 | : len == sizeof(struct STRUCT)) { \ | |
221 | *code = OFPUTIL_##ENUM; \ | |
222 | return 0; \ | |
223 | } else { \ | |
224 | return OFPERR_OFPBAC_BAD_LEN; \ | |
225 | } \ | |
226 | NOT_REACHED(); | |
227 | #include "ofp-util.def" | |
228 | ||
229 | case CONSTANT_HTONS(NXAST_SNAT__OBSOLETE): | |
230 | case CONSTANT_HTONS(NXAST_DROP_SPOOFED_ARP__OBSOLETE): | |
231 | default: | |
232 | return OFPERR_OFPBAC_BAD_TYPE; | |
233 | } | |
234 | } | |
235 | ||
236 | /* Parses 'a' to determine its type. On success stores the correct type into | |
237 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
238 | * '*code' is indeterminate. | |
239 | * | |
240 | * The caller must have already verified that 'a''s length is potentially | |
241 | * correct (that is, a->header.len is nonzero and a multiple of sizeof(union | |
242 | * ofp_action) and no longer than the amount of space allocated to 'a'). | |
243 | * | |
244 | * This function verifies that 'a''s length is correct for the type of action | |
245 | * that it represents. */ | |
246 | static enum ofperr | |
247 | decode_openflow10_action(const union ofp_action *a, | |
248 | enum ofputil_action_code *code) | |
249 | { | |
250 | switch (a->type) { | |
251 | case CONSTANT_HTONS(OFPAT10_VENDOR): | |
252 | return decode_nxast_action(a, code); | |
253 | ||
254 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ | |
255 | case CONSTANT_HTONS(ENUM): \ | |
256 | if (a->header.len == htons(sizeof(struct STRUCT))) { \ | |
257 | *code = OFPUTIL_##ENUM; \ | |
258 | return 0; \ | |
259 | } else { \ | |
260 | return OFPERR_OFPBAC_BAD_LEN; \ | |
261 | } \ | |
262 | break; | |
263 | #include "ofp-util.def" | |
264 | ||
265 | default: | |
266 | return OFPERR_OFPBAC_BAD_TYPE; | |
267 | } | |
268 | } | |
269 | ||
270 | static enum ofperr | |
d01c980f BP |
271 | ofpact_from_nxast(const union ofp_action *a, enum ofputil_action_code code, |
272 | struct ofpbuf *out) | |
f25d0cf3 BP |
273 | { |
274 | const struct nx_action_resubmit *nar; | |
275 | const struct nx_action_set_tunnel *nast; | |
276 | const struct nx_action_set_queue *nasq; | |
277 | const struct nx_action_note *nan; | |
278 | const struct nx_action_set_tunnel64 *nast64; | |
279 | struct ofpact_tunnel *tunnel; | |
d01c980f | 280 | enum ofperr error = 0; |
f25d0cf3 BP |
281 | |
282 | switch (code) { | |
283 | case OFPUTIL_ACTION_INVALID: | |
d01c980f | 284 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: |
3ddcaf2d | 285 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f | 286 | #include "ofp-util.def" |
f25d0cf3 BP |
287 | NOT_REACHED(); |
288 | ||
f25d0cf3 BP |
289 | case OFPUTIL_NXAST_RESUBMIT: |
290 | resubmit_from_openflow((const struct nx_action_resubmit *) a, out); | |
291 | break; | |
292 | ||
293 | case OFPUTIL_NXAST_SET_TUNNEL: | |
294 | nast = (const struct nx_action_set_tunnel *) a; | |
295 | tunnel = ofpact_put_SET_TUNNEL(out); | |
296 | tunnel->ofpact.compat = code; | |
297 | tunnel->tun_id = ntohl(nast->tun_id); | |
298 | break; | |
299 | ||
300 | case OFPUTIL_NXAST_SET_QUEUE: | |
301 | nasq = (const struct nx_action_set_queue *) a; | |
302 | ofpact_put_SET_QUEUE(out)->queue_id = ntohl(nasq->queue_id); | |
303 | break; | |
304 | ||
305 | case OFPUTIL_NXAST_POP_QUEUE: | |
306 | ofpact_put_POP_QUEUE(out); | |
307 | break; | |
308 | ||
309 | case OFPUTIL_NXAST_REG_MOVE: | |
310 | error = nxm_reg_move_from_openflow( | |
311 | (const struct nx_action_reg_move *) a, out); | |
312 | break; | |
313 | ||
314 | case OFPUTIL_NXAST_REG_LOAD: | |
315 | error = nxm_reg_load_from_openflow( | |
316 | (const struct nx_action_reg_load *) a, out); | |
317 | break; | |
318 | ||
319 | case OFPUTIL_NXAST_NOTE: | |
320 | nan = (const struct nx_action_note *) a; | |
321 | note_from_openflow(nan, out); | |
322 | break; | |
323 | ||
324 | case OFPUTIL_NXAST_SET_TUNNEL64: | |
325 | nast64 = (const struct nx_action_set_tunnel64 *) a; | |
326 | tunnel = ofpact_put_SET_TUNNEL(out); | |
327 | tunnel->ofpact.compat = code; | |
328 | tunnel->tun_id = ntohll(nast64->tun_id); | |
329 | break; | |
330 | ||
331 | case OFPUTIL_NXAST_MULTIPATH: | |
332 | error = multipath_from_openflow((const struct nx_action_multipath *) a, | |
333 | ofpact_put_MULTIPATH(out)); | |
334 | break; | |
335 | ||
c51c638a | 336 | case OFPUTIL_NXAST_AUTOPATH__DEPRECATED: |
f25d0cf3 BP |
337 | error = autopath_from_openflow((const struct nx_action_autopath *) a, |
338 | ofpact_put_AUTOPATH(out)); | |
339 | break; | |
340 | ||
341 | case OFPUTIL_NXAST_BUNDLE: | |
342 | case OFPUTIL_NXAST_BUNDLE_LOAD: | |
343 | error = bundle_from_openflow((const struct nx_action_bundle *) a, out); | |
344 | break; | |
345 | ||
346 | case OFPUTIL_NXAST_OUTPUT_REG: | |
347 | error = output_reg_from_openflow( | |
348 | (const struct nx_action_output_reg *) a, out); | |
349 | break; | |
350 | ||
351 | case OFPUTIL_NXAST_RESUBMIT_TABLE: | |
352 | nar = (const struct nx_action_resubmit *) a; | |
353 | error = resubmit_table_from_openflow(nar, out); | |
354 | break; | |
355 | ||
356 | case OFPUTIL_NXAST_LEARN: | |
357 | error = learn_from_openflow((const struct nx_action_learn *) a, out); | |
358 | break; | |
359 | ||
360 | case OFPUTIL_NXAST_EXIT: | |
361 | ofpact_put_EXIT(out); | |
362 | break; | |
363 | ||
364 | case OFPUTIL_NXAST_DEC_TTL: | |
c2d967a5 MM |
365 | error = dec_ttl_from_openflow(out); |
366 | break; | |
367 | ||
368 | case OFPUTIL_NXAST_DEC_TTL_CNT_IDS: | |
369 | error = dec_ttl_cnt_ids_from_openflow( | |
370 | (const struct nx_action_cnt_ids *) a, out); | |
f25d0cf3 BP |
371 | break; |
372 | ||
373 | case OFPUTIL_NXAST_FIN_TIMEOUT: | |
374 | fin_timeout_from_openflow( | |
375 | (const struct nx_action_fin_timeout *) a, out); | |
376 | break; | |
377 | ||
378 | case OFPUTIL_NXAST_CONTROLLER: | |
379 | controller_from_openflow((const struct nx_action_controller *) a, out); | |
380 | break; | |
381 | } | |
382 | ||
383 | return error; | |
384 | } | |
385 | ||
d01c980f BP |
386 | static enum ofperr |
387 | ofpact_from_openflow10(const union ofp_action *a, struct ofpbuf *out) | |
388 | { | |
389 | enum ofputil_action_code code; | |
390 | enum ofperr error; | |
391 | ||
392 | error = decode_openflow10_action(a, &code); | |
393 | if (error) { | |
394 | return error; | |
395 | } | |
396 | ||
397 | switch (code) { | |
398 | case OFPUTIL_ACTION_INVALID: | |
3ddcaf2d | 399 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f BP |
400 | #include "ofp-util.def" |
401 | NOT_REACHED(); | |
402 | ||
403 | case OFPUTIL_OFPAT10_OUTPUT: | |
404 | return output_from_openflow10(&a->output10, out); | |
405 | ||
406 | case OFPUTIL_OFPAT10_SET_VLAN_VID: | |
407 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
408 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
409 | } | |
410 | ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
411 | break; | |
412 | ||
413 | case OFPUTIL_OFPAT10_SET_VLAN_PCP: | |
414 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
415 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
416 | } | |
417 | ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
418 | break; | |
419 | ||
420 | case OFPUTIL_OFPAT10_STRIP_VLAN: | |
421 | ofpact_put_STRIP_VLAN(out); | |
422 | break; | |
423 | ||
424 | case OFPUTIL_OFPAT10_SET_DL_SRC: | |
425 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, | |
426 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
427 | break; | |
428 | ||
429 | case OFPUTIL_OFPAT10_SET_DL_DST: | |
430 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, | |
431 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
432 | break; | |
433 | ||
434 | case OFPUTIL_OFPAT10_SET_NW_SRC: | |
435 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
436 | break; | |
437 | ||
438 | case OFPUTIL_OFPAT10_SET_NW_DST: | |
439 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
440 | break; | |
441 | ||
442 | case OFPUTIL_OFPAT10_SET_NW_TOS: | |
443 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
444 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
445 | } | |
446 | ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos; | |
447 | break; | |
448 | ||
449 | case OFPUTIL_OFPAT10_SET_TP_SRC: | |
450 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
451 | break; | |
452 | ||
453 | case OFPUTIL_OFPAT10_SET_TP_DST: | |
454 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
455 | ||
456 | break; | |
457 | ||
458 | case OFPUTIL_OFPAT10_ENQUEUE: | |
459 | error = enqueue_from_openflow10((const struct ofp_action_enqueue *) a, | |
460 | out); | |
461 | break; | |
462 | ||
463 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: | |
464 | #include "ofp-util.def" | |
465 | return ofpact_from_nxast(a, code, out); | |
466 | } | |
467 | ||
468 | return error; | |
469 | } | |
470 | ||
f25d0cf3 BP |
471 | static inline union ofp_action * |
472 | action_next(const union ofp_action *a) | |
473 | { | |
474 | return ((union ofp_action *) (void *) | |
475 | ((uint8_t *) a + ntohs(a->header.len))); | |
476 | } | |
477 | ||
478 | static inline bool | |
479 | action_is_valid(const union ofp_action *a, size_t n_actions) | |
480 | { | |
481 | uint16_t len = ntohs(a->header.len); | |
482 | return (!(len % OFP_ACTION_ALIGN) | |
483 | && len >= sizeof *a | |
484 | && len / sizeof *a <= n_actions); | |
485 | } | |
486 | ||
487 | /* This macro is careful to check for actions with bad lengths. */ | |
488 | #define ACTION_FOR_EACH(ITER, LEFT, ACTIONS, N_ACTIONS) \ | |
489 | for ((ITER) = (ACTIONS), (LEFT) = (N_ACTIONS); \ | |
490 | (LEFT) > 0 && action_is_valid(ITER, LEFT); \ | |
491 | ((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \ | |
492 | (ITER) = action_next(ITER))) | |
493 | ||
699dddf1 BP |
494 | static void |
495 | log_bad_action(const union ofp_action *actions, size_t n_actions, size_t ofs, | |
496 | enum ofperr error) | |
497 | { | |
498 | if (!VLOG_DROP_WARN(&rl)) { | |
499 | struct ds s; | |
500 | ||
501 | ds_init(&s); | |
502 | ds_put_hex_dump(&s, actions, n_actions * sizeof *actions, 0, false); | |
503 | VLOG_WARN("bad action at offset %#zx (%s):\n%s", | |
504 | ofs * sizeof *actions, ofperr_get_name(error), ds_cstr(&s)); | |
505 | ds_destroy(&s); | |
506 | } | |
507 | } | |
508 | ||
f25d0cf3 | 509 | static enum ofperr |
0300caaf IY |
510 | ofpacts_from_openflow(const union ofp_action *in, size_t n_in, |
511 | struct ofpbuf *out, | |
512 | enum ofperr (*ofpact_from_openflow)( | |
513 | const union ofp_action *a, struct ofpbuf *out)) | |
f25d0cf3 BP |
514 | { |
515 | const union ofp_action *a; | |
516 | size_t left; | |
517 | ||
518 | ACTION_FOR_EACH (a, left, in, n_in) { | |
0300caaf | 519 | enum ofperr error = ofpact_from_openflow(a, out); |
f25d0cf3 | 520 | if (error) { |
699dddf1 | 521 | log_bad_action(in, n_in, a - in, error); |
f25d0cf3 BP |
522 | return error; |
523 | } | |
524 | } | |
525 | if (left) { | |
699dddf1 BP |
526 | enum ofperr error = OFPERR_OFPBAC_BAD_LEN; |
527 | log_bad_action(in, n_in, n_in - left, error); | |
528 | return error; | |
f25d0cf3 BP |
529 | } |
530 | ||
531 | ofpact_pad(out); | |
532 | return 0; | |
533 | } | |
534 | ||
0300caaf IY |
535 | static enum ofperr |
536 | ofpacts_from_openflow10(const union ofp_action *in, size_t n_in, | |
537 | struct ofpbuf *out) | |
538 | { | |
539 | return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow10); | |
540 | } | |
541 | ||
d01c980f BP |
542 | static enum ofperr |
543 | ofpacts_pull_actions(struct ofpbuf *openflow, unsigned int actions_len, | |
544 | struct ofpbuf *ofpacts, | |
545 | enum ofperr (*translate)(const union ofp_action *actions, | |
546 | size_t n_actions, | |
547 | struct ofpbuf *ofpacts)) | |
f25d0cf3 BP |
548 | { |
549 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
550 | const union ofp_action *actions; | |
551 | enum ofperr error; | |
552 | ||
553 | ofpbuf_clear(ofpacts); | |
554 | ||
555 | if (actions_len % OFP_ACTION_ALIGN != 0) { | |
556 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
557 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
558 | return OFPERR_OFPBRC_BAD_LEN; | |
559 | } | |
560 | ||
561 | actions = ofpbuf_try_pull(openflow, actions_len); | |
562 | if (actions == NULL) { | |
563 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
564 | "remaining message length (%zu)", | |
565 | actions_len, openflow->size); | |
566 | return OFPERR_OFPBRC_BAD_LEN; | |
567 | } | |
568 | ||
d01c980f | 569 | error = translate(actions, actions_len / OFP_ACTION_ALIGN, ofpacts); |
f25d0cf3 BP |
570 | if (error) { |
571 | ofpbuf_clear(ofpacts); | |
572 | } | |
d01c980f BP |
573 | return error; |
574 | } | |
575 | ||
576 | /* Attempts to convert 'actions_len' bytes of OpenFlow 1.0 actions from the | |
577 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
578 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
579 | * Returns 0 if successful, otherwise an OpenFlow error. | |
580 | * | |
13f894b1 BP |
581 | * The parsed actions are valid generically, but they may not be valid in a |
582 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
583 | * generically, but specific datapaths may only support port numbers in a | |
584 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
585 | * valid in a specific context. */ | |
d01c980f BP |
586 | enum ofperr |
587 | ofpacts_pull_openflow10(struct ofpbuf *openflow, unsigned int actions_len, | |
588 | struct ofpbuf *ofpacts) | |
589 | { | |
590 | return ofpacts_pull_actions(openflow, actions_len, ofpacts, | |
591 | ofpacts_from_openflow10); | |
592 | } | |
593 | \f | |
594 | /* OpenFlow 1.1 actions. */ | |
595 | ||
596 | /* Parses 'a' to determine its type. On success stores the correct type into | |
597 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
598 | * '*code' is indeterminate. | |
599 | * | |
600 | * The caller must have already verified that 'a''s length is potentially | |
601 | * correct (that is, a->header.len is nonzero and a multiple of sizeof(union | |
602 | * ofp_action) and no longer than the amount of space allocated to 'a'). | |
603 | * | |
604 | * This function verifies that 'a''s length is correct for the type of action | |
605 | * that it represents. */ | |
606 | static enum ofperr | |
607 | decode_openflow11_action(const union ofp_action *a, | |
608 | enum ofputil_action_code *code) | |
609 | { | |
3ddcaf2d BP |
610 | uint16_t len; |
611 | ||
d01c980f BP |
612 | switch (a->type) { |
613 | case CONSTANT_HTONS(OFPAT11_EXPERIMENTER): | |
614 | return decode_nxast_action(a, code); | |
615 | ||
3ddcaf2d BP |
616 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
617 | case CONSTANT_HTONS(ENUM): \ | |
618 | len = ntohs(a->header.len); \ | |
619 | if (EXTENSIBLE \ | |
620 | ? len >= sizeof(struct STRUCT) \ | |
621 | : len == sizeof(struct STRUCT)) { \ | |
622 | *code = OFPUTIL_##ENUM; \ | |
623 | return 0; \ | |
624 | } else { \ | |
625 | return OFPERR_OFPBAC_BAD_LEN; \ | |
626 | } \ | |
627 | NOT_REACHED(); | |
d01c980f BP |
628 | #include "ofp-util.def" |
629 | ||
630 | default: | |
631 | return OFPERR_OFPBAC_BAD_TYPE; | |
632 | } | |
633 | } | |
634 | ||
635 | static enum ofperr | |
636 | output_from_openflow11(const struct ofp11_action_output *oao, | |
637 | struct ofpbuf *out) | |
638 | { | |
639 | struct ofpact_output *output; | |
640 | enum ofperr error; | |
641 | ||
642 | output = ofpact_put_OUTPUT(out); | |
643 | output->max_len = ntohs(oao->max_len); | |
644 | ||
645 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
646 | if (error) { | |
647 | return error; | |
648 | } | |
649 | ||
650 | return ofputil_check_output_port(output->port, OFPP_MAX); | |
651 | } | |
652 | ||
653 | static enum ofperr | |
654 | ofpact_from_openflow11(const union ofp_action *a, struct ofpbuf *out) | |
655 | { | |
656 | enum ofputil_action_code code; | |
657 | enum ofperr error; | |
658 | ||
659 | error = decode_openflow11_action(a, &code); | |
660 | if (error) { | |
661 | return error; | |
662 | } | |
663 | ||
664 | switch (code) { | |
665 | case OFPUTIL_ACTION_INVALID: | |
666 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: | |
667 | #include "ofp-util.def" | |
668 | NOT_REACHED(); | |
669 | ||
670 | case OFPUTIL_OFPAT11_OUTPUT: | |
671 | return output_from_openflow11((const struct ofp11_action_output *) a, | |
672 | out); | |
673 | ||
674 | case OFPUTIL_OFPAT11_SET_VLAN_VID: | |
675 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
676 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
677 | } | |
678 | ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
679 | break; | |
680 | ||
681 | case OFPUTIL_OFPAT11_SET_VLAN_PCP: | |
682 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
683 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
684 | } | |
685 | ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
686 | break; | |
687 | ||
688 | case OFPUTIL_OFPAT11_SET_DL_SRC: | |
689 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, | |
690 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
691 | break; | |
692 | ||
693 | case OFPUTIL_OFPAT11_SET_DL_DST: | |
694 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, | |
695 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
696 | break; | |
697 | ||
698 | case OFPUTIL_OFPAT11_SET_NW_SRC: | |
699 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
700 | break; | |
701 | ||
702 | case OFPUTIL_OFPAT11_SET_NW_DST: | |
703 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
704 | break; | |
705 | ||
706 | case OFPUTIL_OFPAT11_SET_NW_TOS: | |
707 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
708 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
709 | } | |
710 | ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos; | |
711 | break; | |
712 | ||
713 | case OFPUTIL_OFPAT11_SET_TP_SRC: | |
714 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
715 | break; | |
716 | ||
717 | case OFPUTIL_OFPAT11_SET_TP_DST: | |
718 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
719 | break; | |
720 | ||
e9536ecb | 721 | case OFPUTIL_OFPAT12_SET_FIELD: |
d55b18c8 IY |
722 | return nxm_reg_load_from_openflow12_set_field( |
723 | (const struct ofp12_action_set_field *)a, out); | |
e9536ecb | 724 | |
d01c980f BP |
725 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
726 | #include "ofp-util.def" | |
727 | return ofpact_from_nxast(a, code, out); | |
728 | } | |
729 | ||
730 | return error; | |
731 | } | |
732 | ||
733 | static enum ofperr | |
734 | ofpacts_from_openflow11(const union ofp_action *in, size_t n_in, | |
735 | struct ofpbuf *out) | |
736 | { | |
0300caaf | 737 | return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow11); |
f25d0cf3 BP |
738 | } |
739 | \f | |
d01c980f BP |
740 | /* OpenFlow 1.1 instructions. */ |
741 | ||
d01c980f | 742 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
a359d5ad IY |
743 | static inline const struct STRUCT * \ |
744 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
745 | { \ | |
746 | assert(inst->type == htons(ENUM)); \ | |
747 | return (struct STRUCT *)inst; \ | |
748 | } \ | |
749 | \ | |
d01c980f BP |
750 | static inline void \ |
751 | instruction_init_##ENUM(struct STRUCT *s) \ | |
752 | { \ | |
753 | memset(s, 0, sizeof *s); \ | |
754 | s->type = htons(ENUM); \ | |
755 | s->len = htons(sizeof *s); \ | |
756 | } \ | |
757 | \ | |
758 | static inline struct STRUCT * \ | |
759 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
760 | { \ | |
761 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
762 | instruction_init_##ENUM(s); \ | |
763 | return s; \ | |
764 | } | |
765 | OVS_INSTRUCTIONS | |
766 | #undef DEFINE_INST | |
767 | ||
a359d5ad IY |
768 | struct instruction_type_info { |
769 | enum ovs_instruction_type type; | |
770 | const char *name; | |
771 | }; | |
772 | ||
773 | static const struct instruction_type_info inst_info[] = { | |
774 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
775 | OVS_INSTRUCTIONS | |
776 | #undef DEFINE_INST | |
777 | }; | |
778 | ||
779 | const char * | |
780 | ofpact_instruction_name_from_type(enum ovs_instruction_type type) | |
781 | { | |
6ae0fd54 | 782 | return inst_info[type].name; |
a359d5ad IY |
783 | } |
784 | ||
785 | int | |
786 | ofpact_instruction_type_from_name(const char *name) | |
787 | { | |
788 | const struct instruction_type_info *p; | |
789 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
790 | if (!strcasecmp(name, p->name)) { | |
791 | return p->type; | |
792 | } | |
793 | } | |
794 | return -1; | |
795 | } | |
796 | ||
d01c980f BP |
797 | static inline struct ofp11_instruction * |
798 | instruction_next(const struct ofp11_instruction *inst) | |
799 | { | |
800 | return ((struct ofp11_instruction *) (void *) | |
801 | ((uint8_t *) inst + ntohs(inst->len))); | |
802 | } | |
803 | ||
804 | static inline bool | |
805 | instruction_is_valid(const struct ofp11_instruction *inst, | |
806 | size_t n_instructions) | |
807 | { | |
808 | uint16_t len = ntohs(inst->len); | |
809 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
810 | && len >= sizeof *inst | |
811 | && len / sizeof *inst <= n_instructions); | |
812 | } | |
813 | ||
814 | /* This macro is careful to check for instructions with bad lengths. */ | |
815 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
816 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
817 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
818 | ((LEFT) -= (ntohs((ITER)->len) \ | |
819 | / sizeof(struct ofp11_instruction)), \ | |
820 | (ITER) = instruction_next(ITER))) | |
821 | ||
822 | static enum ofperr | |
823 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
824 | enum ovs_instruction_type *type) | |
825 | { | |
826 | uint16_t len = ntohs(inst->len); | |
827 | ||
828 | switch (inst->type) { | |
829 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
830 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
831 | ||
832 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
833 | case CONSTANT_HTONS(ENUM): \ | |
834 | if (EXTENSIBLE \ | |
835 | ? len >= sizeof(struct STRUCT) \ | |
836 | : len == sizeof(struct STRUCT)) { \ | |
837 | *type = OVSINST_##ENUM; \ | |
838 | return 0; \ | |
839 | } else { \ | |
840 | return OFPERR_OFPBIC_BAD_LEN; \ | |
841 | } | |
842 | OVS_INSTRUCTIONS | |
843 | #undef DEFINE_INST | |
844 | ||
845 | default: | |
846 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
847 | } | |
848 | } | |
849 | ||
850 | static enum ofperr | |
851 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
852 | size_t n_insts, | |
853 | const struct ofp11_instruction *out[]) | |
854 | { | |
855 | const struct ofp11_instruction *inst; | |
856 | size_t left; | |
857 | ||
858 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); | |
859 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
860 | enum ovs_instruction_type type; | |
861 | enum ofperr error; | |
862 | ||
863 | error = decode_openflow11_instruction(inst, &type); | |
864 | if (error) { | |
865 | return error; | |
866 | } | |
867 | ||
868 | if (out[type]) { | |
e38c9de5 | 869 | return OFPERR_OFPIT_BAD_INSTRUCTION; |
d01c980f BP |
870 | } |
871 | out[type] = inst; | |
872 | } | |
873 | ||
874 | if (left) { | |
875 | VLOG_WARN_RL(&rl, "bad instruction format at offset %zu", | |
876 | (n_insts - left) * sizeof *inst); | |
877 | return OFPERR_OFPBIC_BAD_LEN; | |
878 | } | |
879 | return 0; | |
880 | } | |
881 | ||
882 | static void | |
883 | get_actions_from_instruction(const struct ofp11_instruction *inst, | |
884 | const union ofp_action **actions, | |
885 | size_t *n_actions) | |
886 | { | |
887 | *actions = (const union ofp_action *) (inst + 1); | |
888 | *n_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN; | |
889 | } | |
890 | ||
891 | /* Attempts to convert 'actions_len' bytes of OpenFlow 1.1 actions from the | |
892 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
893 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
894 | * Returns 0 if successful, otherwise an OpenFlow error. | |
895 | * | |
896 | * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in | |
897 | * instructions, so you should call ofpacts_pull_openflow11_instructions() | |
898 | * instead of this function. | |
899 | * | |
13f894b1 BP |
900 | * The parsed actions are valid generically, but they may not be valid in a |
901 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
902 | * generically, but specific datapaths may only support port numbers in a | |
903 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
904 | * valid in a specific context. */ | |
d01c980f BP |
905 | enum ofperr |
906 | ofpacts_pull_openflow11_actions(struct ofpbuf *openflow, | |
907 | unsigned int actions_len, | |
908 | struct ofpbuf *ofpacts) | |
909 | { | |
0300caaf IY |
910 | return ofpacts_pull_actions(openflow, actions_len, ofpacts, |
911 | ofpacts_from_openflow11); | |
d01c980f BP |
912 | } |
913 | ||
914 | enum ofperr | |
915 | ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow, | |
916 | unsigned int instructions_len, | |
917 | struct ofpbuf *ofpacts) | |
918 | { | |
919 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
920 | const struct ofp11_instruction *instructions; | |
921 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
922 | enum ofperr error; | |
923 | ||
924 | ofpbuf_clear(ofpacts); | |
925 | ||
926 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { | |
927 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
928 | "multiple of %d", | |
929 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
930 | error = OFPERR_OFPBIC_BAD_LEN; | |
931 | goto exit; | |
932 | } | |
933 | ||
934 | instructions = ofpbuf_try_pull(openflow, instructions_len); | |
935 | if (instructions == NULL) { | |
936 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
937 | "remaining message length (%zu)", | |
938 | instructions_len, openflow->size); | |
939 | error = OFPERR_OFPBIC_BAD_LEN; | |
940 | goto exit; | |
941 | } | |
942 | ||
943 | error = decode_openflow11_instructions( | |
944 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
945 | insts); | |
946 | if (error) { | |
947 | goto exit; | |
948 | } | |
949 | ||
950 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
951 | const union ofp_action *actions; | |
952 | size_t n_actions; | |
953 | ||
954 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], | |
955 | &actions, &n_actions); | |
956 | error = ofpacts_from_openflow11(actions, n_actions, ofpacts); | |
957 | if (error) { | |
958 | goto exit; | |
959 | } | |
960 | } | |
961 | ||
d01c980f BP |
962 | if (insts[OVSINST_OFPIT11_GOTO_TABLE] || |
963 | insts[OVSINST_OFPIT11_WRITE_METADATA] || | |
964 | insts[OVSINST_OFPIT11_WRITE_ACTIONS] || | |
965 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
966 | error = OFPERR_OFPBIC_UNSUP_INST; | |
967 | goto exit; | |
968 | } | |
969 | ||
970 | exit: | |
971 | if (error) { | |
972 | ofpbuf_clear(ofpacts); | |
973 | } | |
974 | return error; | |
975 | } | |
976 | \f | |
f25d0cf3 BP |
977 | static enum ofperr |
978 | ofpact_check__(const struct ofpact *a, const struct flow *flow, int max_ports) | |
979 | { | |
980 | const struct ofpact_enqueue *enqueue; | |
981 | ||
982 | switch (a->type) { | |
983 | case OFPACT_OUTPUT: | |
984 | return ofputil_check_output_port(ofpact_get_OUTPUT(a)->port, | |
985 | max_ports); | |
986 | ||
987 | case OFPACT_CONTROLLER: | |
988 | return 0; | |
989 | ||
990 | case OFPACT_ENQUEUE: | |
991 | enqueue = ofpact_get_ENQUEUE(a); | |
992 | if (enqueue->port >= max_ports && enqueue->port != OFPP_IN_PORT | |
993 | && enqueue->port != OFPP_LOCAL) { | |
994 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
995 | } | |
996 | return 0; | |
997 | ||
998 | case OFPACT_OUTPUT_REG: | |
999 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
1000 | ||
1001 | case OFPACT_BUNDLE: | |
1002 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
1003 | ||
1004 | case OFPACT_SET_VLAN_VID: | |
1005 | case OFPACT_SET_VLAN_PCP: | |
1006 | case OFPACT_STRIP_VLAN: | |
1007 | case OFPACT_SET_ETH_SRC: | |
1008 | case OFPACT_SET_ETH_DST: | |
1009 | case OFPACT_SET_IPV4_SRC: | |
1010 | case OFPACT_SET_IPV4_DST: | |
1011 | case OFPACT_SET_IPV4_DSCP: | |
1012 | case OFPACT_SET_L4_SRC_PORT: | |
1013 | case OFPACT_SET_L4_DST_PORT: | |
1014 | return 0; | |
1015 | ||
1016 | case OFPACT_REG_MOVE: | |
1017 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
1018 | ||
1019 | case OFPACT_REG_LOAD: | |
1020 | return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow); | |
1021 | ||
1022 | case OFPACT_DEC_TTL: | |
1023 | case OFPACT_SET_TUNNEL: | |
1024 | case OFPACT_SET_QUEUE: | |
1025 | case OFPACT_POP_QUEUE: | |
1026 | case OFPACT_FIN_TIMEOUT: | |
1027 | case OFPACT_RESUBMIT: | |
1028 | return 0; | |
1029 | ||
1030 | case OFPACT_LEARN: | |
1031 | return learn_check(ofpact_get_LEARN(a), flow); | |
1032 | ||
1033 | case OFPACT_MULTIPATH: | |
1034 | return multipath_check(ofpact_get_MULTIPATH(a), flow); | |
1035 | ||
1036 | case OFPACT_AUTOPATH: | |
1037 | return autopath_check(ofpact_get_AUTOPATH(a), flow); | |
1038 | ||
1039 | case OFPACT_NOTE: | |
1040 | case OFPACT_EXIT: | |
1041 | return 0; | |
1042 | ||
1043 | default: | |
1044 | NOT_REACHED(); | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are | |
1049 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
1050 | * switch with no more than 'max_ports' ports. */ | |
1051 | enum ofperr | |
1052 | ofpacts_check(const struct ofpact ofpacts[], size_t ofpacts_len, | |
1053 | const struct flow *flow, int max_ports) | |
1054 | { | |
1055 | const struct ofpact *a; | |
1056 | ||
1057 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1058 | enum ofperr error = ofpact_check__(a, flow, max_ports); | |
1059 | if (error) { | |
1060 | return error; | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | \f | |
1067 | /* Converting ofpacts to Nicira OpenFlow extensions. */ | |
1068 | ||
1069 | static void | |
1070 | ofpact_output_reg_to_nxast(const struct ofpact_output_reg *output_reg, | |
1071 | struct ofpbuf *out) | |
1072 | { | |
1073 | struct nx_action_output_reg *naor = ofputil_put_NXAST_OUTPUT_REG(out); | |
1074 | ||
1075 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1076 | output_reg->src.n_bits); | |
1077 | naor->src = htonl(output_reg->src.field->nxm_header); | |
1078 | naor->max_len = htons(output_reg->max_len); | |
1079 | } | |
1080 | ||
1081 | static void | |
1082 | ofpact_resubmit_to_nxast(const struct ofpact_resubmit *resubmit, | |
1083 | struct ofpbuf *out) | |
1084 | { | |
1085 | struct nx_action_resubmit *nar; | |
1086 | ||
1087 | if (resubmit->table_id == 0xff | |
1088 | && resubmit->ofpact.compat != OFPUTIL_NXAST_RESUBMIT_TABLE) { | |
1089 | nar = ofputil_put_NXAST_RESUBMIT(out); | |
1090 | } else { | |
1091 | nar = ofputil_put_NXAST_RESUBMIT_TABLE(out); | |
1092 | nar->table = resubmit->table_id; | |
1093 | } | |
1094 | nar->in_port = htons(resubmit->in_port); | |
1095 | } | |
1096 | ||
1097 | static void | |
1098 | ofpact_set_tunnel_to_nxast(const struct ofpact_tunnel *tunnel, | |
1099 | struct ofpbuf *out) | |
1100 | { | |
1101 | uint64_t tun_id = tunnel->tun_id; | |
1102 | ||
1103 | if (tun_id <= UINT32_MAX | |
1104 | && tunnel->ofpact.compat != OFPUTIL_NXAST_SET_TUNNEL64) { | |
1105 | ofputil_put_NXAST_SET_TUNNEL(out)->tun_id = htonl(tun_id); | |
1106 | } else { | |
1107 | ofputil_put_NXAST_SET_TUNNEL64(out)->tun_id = htonll(tun_id); | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | static void | |
1112 | ofpact_note_to_nxast(const struct ofpact_note *note, struct ofpbuf *out) | |
1113 | { | |
1114 | size_t start_ofs = out->size; | |
1115 | struct nx_action_note *nan; | |
1116 | unsigned int remainder; | |
1117 | unsigned int len; | |
1118 | ||
1119 | nan = ofputil_put_NXAST_NOTE(out); | |
1120 | out->size -= sizeof nan->note; | |
1121 | ||
1122 | ofpbuf_put(out, note->data, note->length); | |
1123 | ||
1124 | len = out->size - start_ofs; | |
1125 | remainder = len % OFP_ACTION_ALIGN; | |
1126 | if (remainder) { | |
1127 | ofpbuf_put_zeros(out, OFP_ACTION_ALIGN - remainder); | |
1128 | } | |
1129 | nan = (struct nx_action_note *)((char *)out->data + start_ofs); | |
1130 | nan->len = htons(out->size - start_ofs); | |
1131 | } | |
1132 | ||
1133 | static void | |
1134 | ofpact_controller_to_nxast(const struct ofpact_controller *oc, | |
1135 | struct ofpbuf *out) | |
1136 | { | |
1137 | struct nx_action_controller *nac; | |
1138 | ||
1139 | nac = ofputil_put_NXAST_CONTROLLER(out); | |
1140 | nac->max_len = htons(oc->max_len); | |
1141 | nac->controller_id = htons(oc->controller_id); | |
1142 | nac->reason = oc->reason; | |
1143 | } | |
1144 | ||
c2d967a5 MM |
1145 | static void |
1146 | ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids, | |
1147 | struct ofpbuf *out) | |
1148 | { | |
1149 | if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) { | |
1150 | ofputil_put_NXAST_DEC_TTL(out); | |
1151 | } else { | |
1152 | struct nx_action_cnt_ids *nac_ids = | |
1153 | ofputil_put_NXAST_DEC_TTL_CNT_IDS(out); | |
1154 | int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN); | |
1155 | ovs_be16 *ids; | |
1156 | size_t i; | |
1157 | ||
1158 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); | |
1159 | nac_ids->n_controllers = htons(oc_ids->n_controllers); | |
1160 | ||
1161 | ids = ofpbuf_put_zeros(out, ids_len); | |
1162 | for (i = 0; i < oc_ids->n_controllers; i++) { | |
1163 | ids[i] = htons(oc_ids->cnt_ids[i]); | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | ||
f25d0cf3 BP |
1168 | static void |
1169 | ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout, | |
1170 | struct ofpbuf *out) | |
1171 | { | |
1172 | struct nx_action_fin_timeout *naft = ofputil_put_NXAST_FIN_TIMEOUT(out); | |
1173 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
1174 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
1175 | } | |
1176 | ||
1177 | static void | |
1178 | ofpact_to_nxast(const struct ofpact *a, struct ofpbuf *out) | |
1179 | { | |
1180 | switch (a->type) { | |
1181 | case OFPACT_CONTROLLER: | |
1182 | ofpact_controller_to_nxast(ofpact_get_CONTROLLER(a), out); | |
1183 | break; | |
1184 | ||
1185 | case OFPACT_OUTPUT_REG: | |
1186 | ofpact_output_reg_to_nxast(ofpact_get_OUTPUT_REG(a), out); | |
1187 | break; | |
1188 | ||
1189 | case OFPACT_BUNDLE: | |
1190 | bundle_to_nxast(ofpact_get_BUNDLE(a), out); | |
1191 | break; | |
1192 | ||
1193 | case OFPACT_REG_MOVE: | |
1194 | nxm_reg_move_to_nxast(ofpact_get_REG_MOVE(a), out); | |
1195 | break; | |
1196 | ||
1197 | case OFPACT_REG_LOAD: | |
1198 | nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out); | |
1199 | break; | |
1200 | ||
1201 | case OFPACT_DEC_TTL: | |
c2d967a5 | 1202 | ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out); |
f25d0cf3 BP |
1203 | break; |
1204 | ||
1205 | case OFPACT_SET_TUNNEL: | |
1206 | ofpact_set_tunnel_to_nxast(ofpact_get_SET_TUNNEL(a), out); | |
1207 | break; | |
1208 | ||
1209 | case OFPACT_SET_QUEUE: | |
1210 | ofputil_put_NXAST_SET_QUEUE(out)->queue_id | |
1211 | = htonl(ofpact_get_SET_QUEUE(a)->queue_id); | |
1212 | break; | |
1213 | ||
1214 | case OFPACT_POP_QUEUE: | |
1215 | ofputil_put_NXAST_POP_QUEUE(out); | |
1216 | break; | |
1217 | ||
1218 | case OFPACT_FIN_TIMEOUT: | |
1219 | ofpact_fin_timeout_to_nxast(ofpact_get_FIN_TIMEOUT(a), out); | |
1220 | break; | |
1221 | ||
1222 | case OFPACT_RESUBMIT: | |
1223 | ofpact_resubmit_to_nxast(ofpact_get_RESUBMIT(a), out); | |
1224 | break; | |
1225 | ||
1226 | case OFPACT_LEARN: | |
1227 | learn_to_nxast(ofpact_get_LEARN(a), out); | |
1228 | break; | |
1229 | ||
1230 | case OFPACT_MULTIPATH: | |
1231 | multipath_to_nxast(ofpact_get_MULTIPATH(a), out); | |
1232 | break; | |
1233 | ||
1234 | case OFPACT_AUTOPATH: | |
1235 | autopath_to_nxast(ofpact_get_AUTOPATH(a), out); | |
1236 | break; | |
1237 | ||
1238 | case OFPACT_NOTE: | |
1239 | ofpact_note_to_nxast(ofpact_get_NOTE(a), out); | |
1240 | break; | |
1241 | ||
1242 | case OFPACT_EXIT: | |
1243 | ofputil_put_NXAST_EXIT(out); | |
1244 | break; | |
1245 | ||
1246 | case OFPACT_OUTPUT: | |
1247 | case OFPACT_ENQUEUE: | |
1248 | case OFPACT_SET_VLAN_VID: | |
1249 | case OFPACT_SET_VLAN_PCP: | |
1250 | case OFPACT_STRIP_VLAN: | |
1251 | case OFPACT_SET_ETH_SRC: | |
1252 | case OFPACT_SET_ETH_DST: | |
1253 | case OFPACT_SET_IPV4_SRC: | |
1254 | case OFPACT_SET_IPV4_DST: | |
1255 | case OFPACT_SET_IPV4_DSCP: | |
1256 | case OFPACT_SET_L4_SRC_PORT: | |
1257 | case OFPACT_SET_L4_DST_PORT: | |
1258 | NOT_REACHED(); | |
1259 | } | |
1260 | } | |
1261 | \f | |
1262 | /* Converting ofpacts to OpenFlow 1.0. */ | |
1263 | ||
1264 | static void | |
1265 | ofpact_output_to_openflow10(const struct ofpact_output *output, | |
1266 | struct ofpbuf *out) | |
1267 | { | |
d01c980f | 1268 | struct ofp10_action_output *oao; |
f25d0cf3 BP |
1269 | |
1270 | oao = ofputil_put_OFPAT10_OUTPUT(out); | |
1271 | oao->port = htons(output->port); | |
1272 | oao->max_len = htons(output->max_len); | |
1273 | } | |
1274 | ||
1275 | static void | |
1276 | ofpact_enqueue_to_openflow10(const struct ofpact_enqueue *enqueue, | |
1277 | struct ofpbuf *out) | |
1278 | { | |
1279 | struct ofp_action_enqueue *oae; | |
1280 | ||
1281 | oae = ofputil_put_OFPAT10_ENQUEUE(out); | |
1282 | oae->port = htons(enqueue->port); | |
1283 | oae->queue_id = htonl(enqueue->queue); | |
1284 | } | |
1285 | ||
1286 | static void | |
1287 | ofpact_to_openflow10(const struct ofpact *a, struct ofpbuf *out) | |
1288 | { | |
1289 | switch (a->type) { | |
1290 | case OFPACT_OUTPUT: | |
1291 | ofpact_output_to_openflow10(ofpact_get_OUTPUT(a), out); | |
1292 | break; | |
1293 | ||
1294 | case OFPACT_ENQUEUE: | |
1295 | ofpact_enqueue_to_openflow10(ofpact_get_ENQUEUE(a), out); | |
1296 | break; | |
1297 | ||
1298 | case OFPACT_SET_VLAN_VID: | |
1299 | ofputil_put_OFPAT10_SET_VLAN_VID(out)->vlan_vid | |
1300 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1301 | break; | |
1302 | ||
1303 | case OFPACT_SET_VLAN_PCP: | |
1304 | ofputil_put_OFPAT10_SET_VLAN_PCP(out)->vlan_pcp | |
1305 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
1306 | break; | |
1307 | ||
1308 | case OFPACT_STRIP_VLAN: | |
1309 | ofputil_put_OFPAT10_STRIP_VLAN(out); | |
1310 | break; | |
1311 | ||
1312 | case OFPACT_SET_ETH_SRC: | |
1313 | memcpy(ofputil_put_OFPAT10_SET_DL_SRC(out)->dl_addr, | |
1314 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
1315 | break; | |
1316 | ||
1317 | case OFPACT_SET_ETH_DST: | |
1318 | memcpy(ofputil_put_OFPAT10_SET_DL_DST(out)->dl_addr, | |
1319 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
1320 | break; | |
1321 | ||
1322 | case OFPACT_SET_IPV4_SRC: | |
1323 | ofputil_put_OFPAT10_SET_NW_SRC(out)->nw_addr | |
1324 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
1325 | break; | |
1326 | ||
1327 | case OFPACT_SET_IPV4_DST: | |
1328 | ofputil_put_OFPAT10_SET_NW_DST(out)->nw_addr | |
1329 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
1330 | break; | |
1331 | ||
1332 | case OFPACT_SET_IPV4_DSCP: | |
1333 | ofputil_put_OFPAT10_SET_NW_TOS(out)->nw_tos | |
1334 | = ofpact_get_SET_IPV4_DSCP(a)->dscp; | |
1335 | break; | |
1336 | ||
1337 | case OFPACT_SET_L4_SRC_PORT: | |
1338 | ofputil_put_OFPAT10_SET_TP_SRC(out)->tp_port | |
1339 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1340 | break; | |
1341 | ||
1342 | case OFPACT_SET_L4_DST_PORT: | |
1343 | ofputil_put_OFPAT10_SET_TP_DST(out)->tp_port | |
1344 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
1345 | break; | |
1346 | ||
1347 | case OFPACT_CONTROLLER: | |
1348 | case OFPACT_OUTPUT_REG: | |
1349 | case OFPACT_BUNDLE: | |
1350 | case OFPACT_REG_MOVE: | |
1351 | case OFPACT_REG_LOAD: | |
1352 | case OFPACT_DEC_TTL: | |
1353 | case OFPACT_SET_TUNNEL: | |
1354 | case OFPACT_SET_QUEUE: | |
1355 | case OFPACT_POP_QUEUE: | |
1356 | case OFPACT_FIN_TIMEOUT: | |
1357 | case OFPACT_RESUBMIT: | |
1358 | case OFPACT_LEARN: | |
1359 | case OFPACT_MULTIPATH: | |
1360 | case OFPACT_AUTOPATH: | |
1361 | case OFPACT_NOTE: | |
1362 | case OFPACT_EXIT: | |
1363 | ofpact_to_nxast(a, out); | |
1364 | break; | |
1365 | } | |
1366 | } | |
1367 | ||
d01c980f | 1368 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow 1.0 |
f25d0cf3 BP |
1369 | * actions in 'openflow', appending the actions to any existing data in |
1370 | * 'openflow'. */ | |
1371 | void | |
d01c980f BP |
1372 | ofpacts_put_openflow10(const struct ofpact ofpacts[], size_t ofpacts_len, |
1373 | struct ofpbuf *openflow) | |
f25d0cf3 BP |
1374 | { |
1375 | const struct ofpact *a; | |
1376 | ||
1377 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1378 | ofpact_to_openflow10(a, openflow); | |
1379 | } | |
1380 | } | |
1381 | \f | |
d01c980f BP |
1382 | /* Converting ofpacts to OpenFlow 1.1. */ |
1383 | ||
1384 | static void | |
1385 | ofpact_output_to_openflow11(const struct ofpact_output *output, | |
1386 | struct ofpbuf *out) | |
1387 | { | |
1388 | struct ofp11_action_output *oao; | |
1389 | ||
1390 | oao = ofputil_put_OFPAT11_OUTPUT(out); | |
1391 | oao->port = ofputil_port_to_ofp11(output->port); | |
1392 | oao->max_len = htons(output->max_len); | |
1393 | } | |
1394 | ||
1395 | static void | |
1396 | ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out) | |
1397 | { | |
1398 | switch (a->type) { | |
1399 | case OFPACT_OUTPUT: | |
1400 | return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out); | |
1401 | ||
1402 | case OFPACT_ENQUEUE: | |
1403 | /* XXX */ | |
1404 | break; | |
1405 | ||
1406 | case OFPACT_SET_VLAN_VID: | |
1407 | ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid | |
1408 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1409 | break; | |
1410 | ||
1411 | case OFPACT_SET_VLAN_PCP: | |
1412 | ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp | |
1413 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
1414 | break; | |
1415 | ||
1416 | case OFPACT_STRIP_VLAN: | |
1417 | /* XXX */ | |
1418 | break; | |
1419 | ||
1420 | case OFPACT_SET_ETH_SRC: | |
1421 | memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr, | |
1422 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
1423 | break; | |
1424 | ||
1425 | case OFPACT_SET_ETH_DST: | |
1426 | memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr, | |
1427 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
1428 | break; | |
1429 | ||
1430 | case OFPACT_SET_IPV4_SRC: | |
1431 | ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr | |
1432 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
1433 | break; | |
1434 | ||
1435 | case OFPACT_SET_IPV4_DST: | |
1436 | ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr | |
1437 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
1438 | break; | |
1439 | ||
1440 | case OFPACT_SET_IPV4_DSCP: | |
1441 | ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos | |
1442 | = ofpact_get_SET_IPV4_DSCP(a)->dscp; | |
1443 | break; | |
1444 | ||
1445 | case OFPACT_SET_L4_SRC_PORT: | |
1446 | ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port | |
1447 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1448 | break; | |
1449 | ||
1450 | case OFPACT_SET_L4_DST_PORT: | |
1451 | ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port | |
1452 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
1453 | break; | |
1454 | ||
1455 | case OFPACT_CONTROLLER: | |
1456 | case OFPACT_OUTPUT_REG: | |
1457 | case OFPACT_BUNDLE: | |
1458 | case OFPACT_REG_MOVE: | |
1459 | case OFPACT_REG_LOAD: | |
1460 | case OFPACT_DEC_TTL: | |
1461 | case OFPACT_SET_TUNNEL: | |
1462 | case OFPACT_SET_QUEUE: | |
1463 | case OFPACT_POP_QUEUE: | |
1464 | case OFPACT_FIN_TIMEOUT: | |
1465 | case OFPACT_RESUBMIT: | |
1466 | case OFPACT_LEARN: | |
1467 | case OFPACT_MULTIPATH: | |
1468 | case OFPACT_AUTOPATH: | |
1469 | case OFPACT_NOTE: | |
1470 | case OFPACT_EXIT: | |
1471 | ofpact_to_nxast(a, out); | |
1472 | break; | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | /* Converts the ofpacts in 'ofpacts' (terminated by OFPACT_END) into OpenFlow | |
1477 | * 1.1 actions in 'openflow', appending the actions to any existing data in | |
1478 | * 'openflow'. */ | |
a07c15bc | 1479 | size_t |
d01c980f BP |
1480 | ofpacts_put_openflow11_actions(const struct ofpact ofpacts[], |
1481 | size_t ofpacts_len, struct ofpbuf *openflow) | |
1482 | { | |
1483 | const struct ofpact *a; | |
a07c15bc | 1484 | size_t start_size = openflow->size; |
d01c980f BP |
1485 | |
1486 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1487 | ofpact_to_openflow11(a, openflow); | |
1488 | } | |
a07c15bc SH |
1489 | |
1490 | return openflow->size - start_size; | |
d01c980f BP |
1491 | } |
1492 | ||
1493 | void | |
1494 | ofpacts_put_openflow11_instructions(const struct ofpact ofpacts[], | |
1495 | size_t ofpacts_len, | |
1496 | struct ofpbuf *openflow) | |
1497 | { | |
1498 | struct ofp11_instruction_actions *oia; | |
1499 | size_t ofs; | |
1500 | ||
1501 | /* Put an OFPIT11_APPLY_ACTIONS instruction and fill it in. */ | |
1502 | ofs = openflow->size; | |
1503 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
1504 | ofpacts_put_openflow11_actions(ofpacts, ofpacts_len, openflow); | |
1505 | ||
1506 | /* Update the instruction's length (or, if it's empty, delete it). */ | |
1507 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); | |
1508 | if (openflow->size > ofs + sizeof *oia) { | |
1509 | oia->len = htons(openflow->size - ofs); | |
1510 | } else { | |
1511 | openflow->size = ofs; | |
1512 | } | |
1513 | } | |
1514 | \f | |
f25d0cf3 BP |
1515 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
1516 | static bool | |
1517 | ofpact_outputs_to_port(const struct ofpact *ofpact, uint16_t port) | |
1518 | { | |
1519 | switch (ofpact->type) { | |
1520 | case OFPACT_OUTPUT: | |
1521 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
1522 | case OFPACT_ENQUEUE: | |
1523 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
1524 | case OFPACT_CONTROLLER: | |
1525 | return port == OFPP_CONTROLLER; | |
1526 | ||
1527 | case OFPACT_OUTPUT_REG: | |
1528 | case OFPACT_BUNDLE: | |
1529 | case OFPACT_SET_VLAN_VID: | |
1530 | case OFPACT_SET_VLAN_PCP: | |
1531 | case OFPACT_STRIP_VLAN: | |
1532 | case OFPACT_SET_ETH_SRC: | |
1533 | case OFPACT_SET_ETH_DST: | |
1534 | case OFPACT_SET_IPV4_SRC: | |
1535 | case OFPACT_SET_IPV4_DST: | |
1536 | case OFPACT_SET_IPV4_DSCP: | |
1537 | case OFPACT_SET_L4_SRC_PORT: | |
1538 | case OFPACT_SET_L4_DST_PORT: | |
1539 | case OFPACT_REG_MOVE: | |
1540 | case OFPACT_REG_LOAD: | |
1541 | case OFPACT_DEC_TTL: | |
1542 | case OFPACT_SET_TUNNEL: | |
1543 | case OFPACT_SET_QUEUE: | |
1544 | case OFPACT_POP_QUEUE: | |
1545 | case OFPACT_FIN_TIMEOUT: | |
1546 | case OFPACT_RESUBMIT: | |
1547 | case OFPACT_LEARN: | |
1548 | case OFPACT_MULTIPATH: | |
1549 | case OFPACT_AUTOPATH: | |
1550 | case OFPACT_NOTE: | |
1551 | case OFPACT_EXIT: | |
1552 | default: | |
1553 | return false; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
1558 | * to 'port', false otherwise. */ | |
1559 | bool | |
1560 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
1561 | uint16_t port) | |
1562 | { | |
1563 | const struct ofpact *a; | |
1564 | ||
1565 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1566 | if (ofpact_outputs_to_port(a, port)) { | |
1567 | return true; | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | return false; | |
1572 | } | |
1573 | ||
1574 | bool | |
1575 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
1576 | const struct ofpact *b, size_t b_len) | |
1577 | { | |
1578 | return a_len == b_len && !memcmp(a, b, a_len); | |
1579 | } | |
1580 | \f | |
1581 | /* Formatting ofpacts. */ | |
1582 | ||
1583 | static void | |
1584 | print_note(const struct ofpact_note *note, struct ds *string) | |
1585 | { | |
1586 | size_t i; | |
1587 | ||
1588 | ds_put_cstr(string, "note:"); | |
1589 | for (i = 0; i < note->length; i++) { | |
1590 | if (i) { | |
1591 | ds_put_char(string, '.'); | |
1592 | } | |
1593 | ds_put_format(string, "%02"PRIx8, note->data[i]); | |
1594 | } | |
1595 | } | |
1596 | ||
c2d967a5 MM |
1597 | static void |
1598 | print_dec_ttl(const struct ofpact_cnt_ids *ids, | |
1599 | struct ds *s) | |
1600 | { | |
1601 | size_t i; | |
1602 | ||
1603 | ds_put_cstr(s, "dec_ttl"); | |
1604 | if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) { | |
1605 | ds_put_cstr(s, "("); | |
1606 | for (i = 0; i < ids->n_controllers; i++) { | |
1607 | if (i) { | |
1608 | ds_put_cstr(s, ","); | |
1609 | } | |
1610 | ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]); | |
1611 | } | |
1612 | ds_put_cstr(s, ")"); | |
1613 | } | |
1614 | } | |
1615 | ||
f25d0cf3 BP |
1616 | static void |
1617 | print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout, | |
1618 | struct ds *s) | |
1619 | { | |
1620 | ds_put_cstr(s, "fin_timeout("); | |
1621 | if (fin_timeout->fin_idle_timeout) { | |
1622 | ds_put_format(s, "idle_timeout=%"PRIu16",", | |
1623 | fin_timeout->fin_idle_timeout); | |
1624 | } | |
1625 | if (fin_timeout->fin_hard_timeout) { | |
1626 | ds_put_format(s, "hard_timeout=%"PRIu16",", | |
1627 | fin_timeout->fin_hard_timeout); | |
1628 | } | |
1629 | ds_chomp(s, ','); | |
1630 | ds_put_char(s, ')'); | |
1631 | } | |
1632 | ||
1633 | static void | |
1634 | ofpact_format(const struct ofpact *a, struct ds *s) | |
1635 | { | |
1636 | const struct ofpact_enqueue *enqueue; | |
1637 | const struct ofpact_resubmit *resubmit; | |
1638 | const struct ofpact_autopath *autopath; | |
1639 | const struct ofpact_controller *controller; | |
1640 | const struct ofpact_tunnel *tunnel; | |
1641 | uint16_t port; | |
1642 | ||
1643 | switch (a->type) { | |
1644 | case OFPACT_OUTPUT: | |
1645 | port = ofpact_get_OUTPUT(a)->port; | |
1646 | if (port < OFPP_MAX) { | |
1647 | ds_put_format(s, "output:%"PRIu16, port); | |
1648 | } else { | |
1649 | ofputil_format_port(port, s); | |
1650 | if (port == OFPP_CONTROLLER) { | |
1651 | ds_put_format(s, ":%"PRIu16, ofpact_get_OUTPUT(a)->max_len); | |
1652 | } | |
1653 | } | |
1654 | break; | |
1655 | ||
1656 | case OFPACT_CONTROLLER: | |
1657 | controller = ofpact_get_CONTROLLER(a); | |
1658 | if (controller->reason == OFPR_ACTION && | |
1659 | controller->controller_id == 0) { | |
1660 | ds_put_format(s, "CONTROLLER:%"PRIu16, | |
1661 | ofpact_get_CONTROLLER(a)->max_len); | |
1662 | } else { | |
1663 | enum ofp_packet_in_reason reason = controller->reason; | |
1664 | ||
1665 | ds_put_cstr(s, "controller("); | |
1666 | if (reason != OFPR_ACTION) { | |
1667 | ds_put_format(s, "reason=%s,", | |
1668 | ofputil_packet_in_reason_to_string(reason)); | |
1669 | } | |
1670 | if (controller->max_len != UINT16_MAX) { | |
1671 | ds_put_format(s, "max_len=%"PRIu16",", controller->max_len); | |
1672 | } | |
1673 | if (controller->controller_id != 0) { | |
1674 | ds_put_format(s, "id=%"PRIu16",", controller->controller_id); | |
1675 | } | |
1676 | ds_chomp(s, ','); | |
1677 | ds_put_char(s, ')'); | |
1678 | } | |
1679 | break; | |
1680 | ||
1681 | case OFPACT_ENQUEUE: | |
1682 | enqueue = ofpact_get_ENQUEUE(a); | |
1683 | ds_put_format(s, "enqueue:"); | |
1684 | ofputil_format_port(enqueue->port, s); | |
1685 | ds_put_format(s, "q%"PRIu32, enqueue->queue); | |
1686 | break; | |
1687 | ||
1688 | case OFPACT_OUTPUT_REG: | |
1689 | ds_put_cstr(s, "output:"); | |
1690 | mf_format_subfield(&ofpact_get_OUTPUT_REG(a)->src, s); | |
1691 | break; | |
1692 | ||
1693 | case OFPACT_BUNDLE: | |
1694 | bundle_format(ofpact_get_BUNDLE(a), s); | |
1695 | break; | |
1696 | ||
1697 | case OFPACT_SET_VLAN_VID: | |
1698 | ds_put_format(s, "mod_vlan_vid:%"PRIu16, | |
1699 | ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1700 | break; | |
1701 | ||
1702 | case OFPACT_SET_VLAN_PCP: | |
1703 | ds_put_format(s, "mod_vlan_pcp:%"PRIu8, | |
1704 | ofpact_get_SET_VLAN_PCP(a)->vlan_pcp); | |
1705 | break; | |
1706 | ||
1707 | case OFPACT_STRIP_VLAN: | |
1708 | ds_put_cstr(s, "strip_vlan"); | |
1709 | break; | |
1710 | ||
1711 | case OFPACT_SET_ETH_SRC: | |
1712 | ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT, | |
1713 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_SRC(a)->mac)); | |
1714 | break; | |
1715 | ||
1716 | case OFPACT_SET_ETH_DST: | |
1717 | ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT, | |
1718 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_DST(a)->mac)); | |
1719 | break; | |
1720 | ||
1721 | case OFPACT_SET_IPV4_SRC: | |
1722 | ds_put_format(s, "mod_nw_src:"IP_FMT, | |
1723 | IP_ARGS(&ofpact_get_SET_IPV4_SRC(a)->ipv4)); | |
1724 | break; | |
1725 | ||
1726 | case OFPACT_SET_IPV4_DST: | |
1727 | ds_put_format(s, "mod_nw_dst:"IP_FMT, | |
1728 | IP_ARGS(&ofpact_get_SET_IPV4_DST(a)->ipv4)); | |
1729 | break; | |
1730 | ||
1731 | case OFPACT_SET_IPV4_DSCP: | |
1732 | ds_put_format(s, "mod_nw_tos:%d", ofpact_get_SET_IPV4_DSCP(a)->dscp); | |
1733 | break; | |
1734 | ||
1735 | case OFPACT_SET_L4_SRC_PORT: | |
1736 | ds_put_format(s, "mod_tp_src:%d", ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1737 | break; | |
1738 | ||
1739 | case OFPACT_SET_L4_DST_PORT: | |
1740 | ds_put_format(s, "mod_tp_dst:%d", ofpact_get_SET_L4_DST_PORT(a)->port); | |
1741 | break; | |
1742 | ||
1743 | case OFPACT_REG_MOVE: | |
1744 | nxm_format_reg_move(ofpact_get_REG_MOVE(a), s); | |
1745 | break; | |
1746 | ||
1747 | case OFPACT_REG_LOAD: | |
1748 | nxm_format_reg_load(ofpact_get_REG_LOAD(a), s); | |
1749 | break; | |
1750 | ||
1751 | case OFPACT_DEC_TTL: | |
c2d967a5 | 1752 | print_dec_ttl(ofpact_get_DEC_TTL(a), s); |
f25d0cf3 BP |
1753 | break; |
1754 | ||
1755 | case OFPACT_SET_TUNNEL: | |
1756 | tunnel = ofpact_get_SET_TUNNEL(a); | |
1757 | ds_put_format(s, "set_tunnel%s:%#"PRIx64, | |
1758 | (tunnel->tun_id > UINT32_MAX | |
1759 | || a->compat == OFPUTIL_NXAST_SET_TUNNEL64 ? "64" : ""), | |
1760 | tunnel->tun_id); | |
1761 | break; | |
1762 | ||
1763 | case OFPACT_SET_QUEUE: | |
1764 | ds_put_format(s, "set_queue:%"PRIu32, | |
1765 | ofpact_get_SET_QUEUE(a)->queue_id); | |
1766 | break; | |
1767 | ||
1768 | case OFPACT_POP_QUEUE: | |
1769 | ds_put_cstr(s, "pop_queue"); | |
1770 | break; | |
1771 | ||
1772 | case OFPACT_FIN_TIMEOUT: | |
1773 | print_fin_timeout(ofpact_get_FIN_TIMEOUT(a), s); | |
1774 | break; | |
1775 | ||
1776 | case OFPACT_RESUBMIT: | |
1777 | resubmit = ofpact_get_RESUBMIT(a); | |
1778 | if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) { | |
c6100d92 BP |
1779 | ds_put_cstr(s, "resubmit:"); |
1780 | ofputil_format_port(resubmit->in_port, s); | |
f25d0cf3 BP |
1781 | } else { |
1782 | ds_put_format(s, "resubmit("); | |
1783 | if (resubmit->in_port != OFPP_IN_PORT) { | |
1784 | ofputil_format_port(resubmit->in_port, s); | |
1785 | } | |
1786 | ds_put_char(s, ','); | |
1787 | if (resubmit->table_id != 255) { | |
1788 | ds_put_format(s, "%"PRIu8, resubmit->table_id); | |
1789 | } | |
1790 | ds_put_char(s, ')'); | |
1791 | } | |
1792 | break; | |
1793 | ||
1794 | case OFPACT_LEARN: | |
1795 | learn_format(ofpact_get_LEARN(a), s); | |
1796 | break; | |
1797 | ||
1798 | case OFPACT_MULTIPATH: | |
1799 | multipath_format(ofpact_get_MULTIPATH(a), s); | |
1800 | break; | |
1801 | ||
1802 | case OFPACT_AUTOPATH: | |
1803 | autopath = ofpact_get_AUTOPATH(a); | |
c6100d92 BP |
1804 | ds_put_cstr(s, "autopath("); |
1805 | ofputil_format_port(autopath->port, s); | |
1806 | ds_put_char(s, ','); | |
f25d0cf3 BP |
1807 | mf_format_subfield(&autopath->dst, s); |
1808 | ds_put_char(s, ')'); | |
1809 | break; | |
1810 | ||
1811 | case OFPACT_NOTE: | |
1812 | print_note(ofpact_get_NOTE(a), s); | |
1813 | break; | |
1814 | ||
1815 | case OFPACT_EXIT: | |
1816 | ds_put_cstr(s, "exit"); | |
1817 | break; | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
1822 | * 'ofpacts' to 'string'. */ | |
1823 | void | |
1824 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
1825 | struct ds *string) | |
1826 | { | |
1827 | ds_put_cstr(string, "actions="); | |
1828 | if (!ofpacts_len) { | |
1829 | ds_put_cstr(string, "drop"); | |
1830 | } else { | |
1831 | const struct ofpact *a; | |
1832 | ||
1833 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1834 | if (a != ofpacts) { | |
1835 | ds_put_cstr(string, ","); | |
1836 | } | |
1837 | ofpact_format(a, string); | |
1838 | } | |
1839 | } | |
1840 | } | |
1841 | \f | |
1842 | /* Internal use by helpers. */ | |
1843 | ||
1844 | void * | |
1845 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
1846 | { | |
1847 | struct ofpact *ofpact; | |
1848 | ||
1849 | ofpact_pad(ofpacts); | |
1850 | ofpact = ofpacts->l2 = ofpbuf_put_uninit(ofpacts, len); | |
1851 | ofpact_init(ofpact, type, len); | |
1852 | return ofpact; | |
1853 | } | |
1854 | ||
1855 | void | |
1856 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
1857 | { | |
1858 | memset(ofpact, 0, len); | |
1859 | ofpact->type = type; | |
1860 | ofpact->compat = OFPUTIL_ACTION_INVALID; | |
1861 | ofpact->len = len; | |
1862 | } | |
1863 | \f | |
1864 | /* Updates 'ofpact->len' to the number of bytes in the tail of 'ofpacts' | |
1865 | * starting at 'ofpact'. | |
1866 | * | |
1867 | * This is the correct way to update a variable-length ofpact's length after | |
1868 | * adding the variable-length part of the payload. (See the large comment | |
1869 | * near the end of ofp-actions.h for more information.) */ | |
1870 | void | |
1871 | ofpact_update_len(struct ofpbuf *ofpacts, struct ofpact *ofpact) | |
1872 | { | |
1873 | assert(ofpact == ofpacts->l2); | |
1874 | ofpact->len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; | |
1875 | } | |
1876 | ||
1877 | /* Pads out 'ofpacts' to a multiple of OFPACT_ALIGNTO bytes in length. Each | |
1878 | * ofpact_put_<ENUM>() calls this function automatically beforehand, but the | |
1879 | * client must call this itself after adding the final ofpact to an array of | |
1880 | * them. | |
1881 | * | |
1882 | * (The consequences of failing to call this function are probably not dire. | |
1883 | * OFPACT_FOR_EACH will calculate a pointer beyond the end of the ofpacts, but | |
1884 | * not dereference it. That's undefined behavior, technically, but it will not | |
1885 | * cause a real problem on common systems. Still, it seems better to call | |
1886 | * it.) */ | |
1887 | void | |
1888 | ofpact_pad(struct ofpbuf *ofpacts) | |
1889 | { | |
1890 | unsigned int rem = ofpacts->size % OFPACT_ALIGNTO; | |
1891 | if (rem) { | |
1892 | ofpbuf_put_zeros(ofpacts, OFPACT_ALIGNTO - rem); | |
1893 | } | |
1894 | } |