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f25d0cf3 | 1 | /* |
6813ee7c | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 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" | |
f25d0cf3 BP |
19 | #include "bundle.h" |
20 | #include "byte-order.h" | |
21 | #include "compiler.h" | |
22 | #include "dynamic-string.h" | |
23 | #include "learn.h" | |
24 | #include "meta-flow.h" | |
25 | #include "multipath.h" | |
26 | #include "nx-match.h" | |
27 | #include "ofp-util.h" | |
28 | #include "ofpbuf.h" | |
cb22974d | 29 | #include "util.h" |
f25d0cf3 BP |
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 | |
31a9e63f | 52 | enqueue_from_openflow10(const struct ofp10_action_enqueue *oae, |
f25d0cf3 BP |
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 | ||
4cceacb9 JS |
138 | static enum ofperr |
139 | metadata_from_nxast(const struct nx_action_write_metadata *nawm, | |
140 | struct ofpbuf *out) | |
141 | { | |
142 | struct ofpact_metadata *om; | |
143 | ||
144 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
145 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
146 | } | |
147 | ||
148 | om = ofpact_put_WRITE_METADATA(out); | |
149 | om->metadata = nawm->metadata; | |
150 | om->mask = nawm->mask; | |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
f25d0cf3 BP |
155 | static void |
156 | note_from_openflow(const struct nx_action_note *nan, struct ofpbuf *out) | |
157 | { | |
158 | struct ofpact_note *note; | |
159 | unsigned int length; | |
160 | ||
161 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
162 | note = ofpact_put(out, OFPACT_NOTE, | |
163 | offsetof(struct ofpact_note, data) + length); | |
164 | note->length = length; | |
165 | memcpy(note->data, nan->note, length); | |
166 | } | |
167 | ||
c2d967a5 | 168 | static enum ofperr |
7bcb1506 | 169 | dec_ttl_from_openflow(struct ofpbuf *out, enum ofputil_action_code compat) |
c2d967a5 MM |
170 | { |
171 | uint16_t id = 0; | |
172 | struct ofpact_cnt_ids *ids; | |
173 | enum ofperr error = 0; | |
174 | ||
175 | ids = ofpact_put_DEC_TTL(out); | |
7bcb1506 | 176 | ids->ofpact.compat = compat; |
c2d967a5 MM |
177 | ids->n_controllers = 1; |
178 | ofpbuf_put(out, &id, sizeof id); | |
179 | ids = out->l2; | |
180 | ofpact_update_len(out, &ids->ofpact); | |
181 | return error; | |
182 | } | |
183 | ||
184 | static enum ofperr | |
185 | dec_ttl_cnt_ids_from_openflow(const struct nx_action_cnt_ids *nac_ids, | |
186 | struct ofpbuf *out) | |
187 | { | |
188 | struct ofpact_cnt_ids *ids; | |
189 | size_t ids_size; | |
190 | int i; | |
191 | ||
192 | ids = ofpact_put_DEC_TTL(out); | |
193 | ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS; | |
194 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
195 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
196 | ||
197 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
198 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
199 | } | |
200 | ||
201 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
202 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %zu bytes " | |
203 | "allocated for controller ids. %zu bytes are required for " | |
204 | "%"PRIu16" controllers.", ids_size, | |
205 | ids->n_controllers * sizeof(ovs_be16), ids->n_controllers); | |
206 | return OFPERR_OFPBAC_BAD_LEN; | |
207 | } | |
208 | ||
209 | for (i = 0; i < ids->n_controllers; i++) { | |
210 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
211 | ofpbuf_put(out, &id, sizeof id); | |
212 | } | |
213 | ||
214 | ids = out->l2; | |
215 | ofpact_update_len(out, &ids->ofpact); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
f25d0cf3 BP |
220 | static enum ofperr |
221 | decode_nxast_action(const union ofp_action *a, enum ofputil_action_code *code) | |
222 | { | |
223 | const struct nx_action_header *nah = (const struct nx_action_header *) a; | |
224 | uint16_t len = ntohs(a->header.len); | |
225 | ||
226 | if (len < sizeof(struct nx_action_header)) { | |
227 | return OFPERR_OFPBAC_BAD_LEN; | |
228 | } else if (a->vendor.vendor != CONSTANT_HTONL(NX_VENDOR_ID)) { | |
229 | return OFPERR_OFPBAC_BAD_VENDOR; | |
230 | } | |
231 | ||
232 | switch (nah->subtype) { | |
233 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
234 | case CONSTANT_HTONS(ENUM): \ | |
235 | if (EXTENSIBLE \ | |
236 | ? len >= sizeof(struct STRUCT) \ | |
237 | : len == sizeof(struct STRUCT)) { \ | |
238 | *code = OFPUTIL_##ENUM; \ | |
239 | return 0; \ | |
240 | } else { \ | |
241 | return OFPERR_OFPBAC_BAD_LEN; \ | |
242 | } \ | |
243 | NOT_REACHED(); | |
244 | #include "ofp-util.def" | |
245 | ||
246 | case CONSTANT_HTONS(NXAST_SNAT__OBSOLETE): | |
247 | case CONSTANT_HTONS(NXAST_DROP_SPOOFED_ARP__OBSOLETE): | |
248 | default: | |
249 | return OFPERR_OFPBAC_BAD_TYPE; | |
250 | } | |
251 | } | |
252 | ||
253 | /* Parses 'a' to determine its type. On success stores the correct type into | |
254 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
255 | * '*code' is indeterminate. | |
256 | * | |
257 | * The caller must have already verified that 'a''s length is potentially | |
258 | * correct (that is, a->header.len is nonzero and a multiple of sizeof(union | |
259 | * ofp_action) and no longer than the amount of space allocated to 'a'). | |
260 | * | |
261 | * This function verifies that 'a''s length is correct for the type of action | |
262 | * that it represents. */ | |
263 | static enum ofperr | |
264 | decode_openflow10_action(const union ofp_action *a, | |
265 | enum ofputil_action_code *code) | |
266 | { | |
267 | switch (a->type) { | |
268 | case CONSTANT_HTONS(OFPAT10_VENDOR): | |
269 | return decode_nxast_action(a, code); | |
270 | ||
271 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ | |
272 | case CONSTANT_HTONS(ENUM): \ | |
273 | if (a->header.len == htons(sizeof(struct STRUCT))) { \ | |
274 | *code = OFPUTIL_##ENUM; \ | |
275 | return 0; \ | |
276 | } else { \ | |
277 | return OFPERR_OFPBAC_BAD_LEN; \ | |
278 | } \ | |
279 | break; | |
280 | #include "ofp-util.def" | |
281 | ||
282 | default: | |
283 | return OFPERR_OFPBAC_BAD_TYPE; | |
284 | } | |
285 | } | |
286 | ||
287 | static enum ofperr | |
d01c980f BP |
288 | ofpact_from_nxast(const union ofp_action *a, enum ofputil_action_code code, |
289 | struct ofpbuf *out) | |
f25d0cf3 BP |
290 | { |
291 | const struct nx_action_resubmit *nar; | |
292 | const struct nx_action_set_tunnel *nast; | |
293 | const struct nx_action_set_queue *nasq; | |
294 | const struct nx_action_note *nan; | |
295 | const struct nx_action_set_tunnel64 *nast64; | |
4cceacb9 | 296 | const struct nx_action_write_metadata *nawm; |
f25d0cf3 | 297 | struct ofpact_tunnel *tunnel; |
d01c980f | 298 | enum ofperr error = 0; |
f25d0cf3 BP |
299 | |
300 | switch (code) { | |
301 | case OFPUTIL_ACTION_INVALID: | |
d01c980f | 302 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: |
3ddcaf2d | 303 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f | 304 | #include "ofp-util.def" |
f25d0cf3 BP |
305 | NOT_REACHED(); |
306 | ||
f25d0cf3 BP |
307 | case OFPUTIL_NXAST_RESUBMIT: |
308 | resubmit_from_openflow((const struct nx_action_resubmit *) a, out); | |
309 | break; | |
310 | ||
311 | case OFPUTIL_NXAST_SET_TUNNEL: | |
312 | nast = (const struct nx_action_set_tunnel *) a; | |
313 | tunnel = ofpact_put_SET_TUNNEL(out); | |
314 | tunnel->ofpact.compat = code; | |
315 | tunnel->tun_id = ntohl(nast->tun_id); | |
316 | break; | |
317 | ||
4cceacb9 JS |
318 | case OFPUTIL_NXAST_WRITE_METADATA: |
319 | nawm = (const struct nx_action_write_metadata *) a; | |
320 | error = metadata_from_nxast(nawm, out); | |
321 | break; | |
322 | ||
f25d0cf3 BP |
323 | case OFPUTIL_NXAST_SET_QUEUE: |
324 | nasq = (const struct nx_action_set_queue *) a; | |
325 | ofpact_put_SET_QUEUE(out)->queue_id = ntohl(nasq->queue_id); | |
326 | break; | |
327 | ||
328 | case OFPUTIL_NXAST_POP_QUEUE: | |
329 | ofpact_put_POP_QUEUE(out); | |
330 | break; | |
331 | ||
332 | case OFPUTIL_NXAST_REG_MOVE: | |
333 | error = nxm_reg_move_from_openflow( | |
334 | (const struct nx_action_reg_move *) a, out); | |
335 | break; | |
336 | ||
337 | case OFPUTIL_NXAST_REG_LOAD: | |
338 | error = nxm_reg_load_from_openflow( | |
339 | (const struct nx_action_reg_load *) a, out); | |
340 | break; | |
341 | ||
bd85dac1 AZ |
342 | case OFPUTIL_NXAST_STACK_PUSH: |
343 | error = nxm_stack_push_from_openflow( | |
344 | (const struct nx_action_stack *) a, out); | |
345 | break; | |
346 | ||
347 | case OFPUTIL_NXAST_STACK_POP: | |
348 | error = nxm_stack_pop_from_openflow( | |
349 | (const struct nx_action_stack *) a, out); | |
350 | break; | |
351 | ||
f25d0cf3 BP |
352 | case OFPUTIL_NXAST_NOTE: |
353 | nan = (const struct nx_action_note *) a; | |
354 | note_from_openflow(nan, out); | |
355 | break; | |
356 | ||
357 | case OFPUTIL_NXAST_SET_TUNNEL64: | |
358 | nast64 = (const struct nx_action_set_tunnel64 *) a; | |
359 | tunnel = ofpact_put_SET_TUNNEL(out); | |
360 | tunnel->ofpact.compat = code; | |
361 | tunnel->tun_id = ntohll(nast64->tun_id); | |
362 | break; | |
363 | ||
364 | case OFPUTIL_NXAST_MULTIPATH: | |
365 | error = multipath_from_openflow((const struct nx_action_multipath *) a, | |
366 | ofpact_put_MULTIPATH(out)); | |
367 | break; | |
368 | ||
f25d0cf3 BP |
369 | case OFPUTIL_NXAST_BUNDLE: |
370 | case OFPUTIL_NXAST_BUNDLE_LOAD: | |
371 | error = bundle_from_openflow((const struct nx_action_bundle *) a, out); | |
372 | break; | |
373 | ||
374 | case OFPUTIL_NXAST_OUTPUT_REG: | |
375 | error = output_reg_from_openflow( | |
376 | (const struct nx_action_output_reg *) a, out); | |
377 | break; | |
378 | ||
379 | case OFPUTIL_NXAST_RESUBMIT_TABLE: | |
380 | nar = (const struct nx_action_resubmit *) a; | |
381 | error = resubmit_table_from_openflow(nar, out); | |
382 | break; | |
383 | ||
384 | case OFPUTIL_NXAST_LEARN: | |
385 | error = learn_from_openflow((const struct nx_action_learn *) a, out); | |
386 | break; | |
387 | ||
388 | case OFPUTIL_NXAST_EXIT: | |
389 | ofpact_put_EXIT(out); | |
390 | break; | |
391 | ||
392 | case OFPUTIL_NXAST_DEC_TTL: | |
7bcb1506 | 393 | error = dec_ttl_from_openflow(out, code); |
c2d967a5 MM |
394 | break; |
395 | ||
396 | case OFPUTIL_NXAST_DEC_TTL_CNT_IDS: | |
397 | error = dec_ttl_cnt_ids_from_openflow( | |
398 | (const struct nx_action_cnt_ids *) a, out); | |
f25d0cf3 BP |
399 | break; |
400 | ||
401 | case OFPUTIL_NXAST_FIN_TIMEOUT: | |
402 | fin_timeout_from_openflow( | |
403 | (const struct nx_action_fin_timeout *) a, out); | |
404 | break; | |
405 | ||
406 | case OFPUTIL_NXAST_CONTROLLER: | |
407 | controller_from_openflow((const struct nx_action_controller *) a, out); | |
408 | break; | |
b02475c5 SH |
409 | |
410 | case OFPUTIL_NXAST_PUSH_MPLS: { | |
411 | struct nx_action_push_mpls *nxapm = (struct nx_action_push_mpls *)a; | |
412 | if (!eth_type_mpls(nxapm->ethertype)) { | |
413 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
414 | } | |
415 | ofpact_put_PUSH_MPLS(out)->ethertype = nxapm->ethertype; | |
416 | break; | |
417 | } | |
418 | ||
0f3f3c3d SH |
419 | case OFPUTIL_NXAST_SET_MPLS_TTL: { |
420 | struct nx_action_mpls_ttl *nxamt = (struct nx_action_mpls_ttl *)a; | |
421 | ofpact_put_SET_MPLS_TTL(out)->ttl = nxamt->ttl; | |
422 | break; | |
423 | } | |
424 | ||
b676167a SH |
425 | case OFPUTIL_NXAST_DEC_MPLS_TTL: |
426 | ofpact_put_DEC_MPLS_TTL(out); | |
427 | break; | |
428 | ||
b02475c5 SH |
429 | case OFPUTIL_NXAST_POP_MPLS: { |
430 | struct nx_action_pop_mpls *nxapm = (struct nx_action_pop_mpls *)a; | |
431 | if (eth_type_mpls(nxapm->ethertype)) { | |
432 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
433 | } | |
434 | ofpact_put_POP_MPLS(out)->ethertype = nxapm->ethertype; | |
435 | break; | |
436 | } | |
f25d0cf3 BP |
437 | } |
438 | ||
439 | return error; | |
440 | } | |
441 | ||
d01c980f BP |
442 | static enum ofperr |
443 | ofpact_from_openflow10(const union ofp_action *a, struct ofpbuf *out) | |
444 | { | |
445 | enum ofputil_action_code code; | |
446 | enum ofperr error; | |
447 | ||
448 | error = decode_openflow10_action(a, &code); | |
449 | if (error) { | |
450 | return error; | |
451 | } | |
452 | ||
453 | switch (code) { | |
454 | case OFPUTIL_ACTION_INVALID: | |
3ddcaf2d | 455 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f BP |
456 | #include "ofp-util.def" |
457 | NOT_REACHED(); | |
458 | ||
459 | case OFPUTIL_OFPAT10_OUTPUT: | |
460 | return output_from_openflow10(&a->output10, out); | |
461 | ||
462 | case OFPUTIL_OFPAT10_SET_VLAN_VID: | |
463 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
464 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
465 | } | |
466 | ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
467 | break; | |
468 | ||
469 | case OFPUTIL_OFPAT10_SET_VLAN_PCP: | |
470 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
471 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
472 | } | |
473 | ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
474 | break; | |
475 | ||
476 | case OFPUTIL_OFPAT10_STRIP_VLAN: | |
477 | ofpact_put_STRIP_VLAN(out); | |
478 | break; | |
479 | ||
480 | case OFPUTIL_OFPAT10_SET_DL_SRC: | |
481 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, | |
482 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
483 | break; | |
484 | ||
485 | case OFPUTIL_OFPAT10_SET_DL_DST: | |
486 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, | |
487 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
488 | break; | |
489 | ||
490 | case OFPUTIL_OFPAT10_SET_NW_SRC: | |
491 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
492 | break; | |
493 | ||
494 | case OFPUTIL_OFPAT10_SET_NW_DST: | |
495 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
496 | break; | |
497 | ||
498 | case OFPUTIL_OFPAT10_SET_NW_TOS: | |
499 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
500 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
501 | } | |
502 | ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos; | |
503 | break; | |
504 | ||
505 | case OFPUTIL_OFPAT10_SET_TP_SRC: | |
506 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
507 | break; | |
508 | ||
509 | case OFPUTIL_OFPAT10_SET_TP_DST: | |
510 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
511 | ||
512 | break; | |
513 | ||
514 | case OFPUTIL_OFPAT10_ENQUEUE: | |
31a9e63f | 515 | error = enqueue_from_openflow10((const struct ofp10_action_enqueue *) a, |
d01c980f BP |
516 | out); |
517 | break; | |
518 | ||
519 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: | |
520 | #include "ofp-util.def" | |
521 | return ofpact_from_nxast(a, code, out); | |
522 | } | |
523 | ||
524 | return error; | |
525 | } | |
526 | ||
f25d0cf3 BP |
527 | static inline union ofp_action * |
528 | action_next(const union ofp_action *a) | |
529 | { | |
530 | return ((union ofp_action *) (void *) | |
531 | ((uint8_t *) a + ntohs(a->header.len))); | |
532 | } | |
533 | ||
534 | static inline bool | |
535 | action_is_valid(const union ofp_action *a, size_t n_actions) | |
536 | { | |
537 | uint16_t len = ntohs(a->header.len); | |
538 | return (!(len % OFP_ACTION_ALIGN) | |
539 | && len >= sizeof *a | |
540 | && len / sizeof *a <= n_actions); | |
541 | } | |
542 | ||
543 | /* This macro is careful to check for actions with bad lengths. */ | |
544 | #define ACTION_FOR_EACH(ITER, LEFT, ACTIONS, N_ACTIONS) \ | |
545 | for ((ITER) = (ACTIONS), (LEFT) = (N_ACTIONS); \ | |
546 | (LEFT) > 0 && action_is_valid(ITER, LEFT); \ | |
547 | ((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \ | |
548 | (ITER) = action_next(ITER))) | |
549 | ||
699dddf1 BP |
550 | static void |
551 | log_bad_action(const union ofp_action *actions, size_t n_actions, size_t ofs, | |
552 | enum ofperr error) | |
553 | { | |
554 | if (!VLOG_DROP_WARN(&rl)) { | |
555 | struct ds s; | |
556 | ||
557 | ds_init(&s); | |
558 | ds_put_hex_dump(&s, actions, n_actions * sizeof *actions, 0, false); | |
559 | VLOG_WARN("bad action at offset %#zx (%s):\n%s", | |
560 | ofs * sizeof *actions, ofperr_get_name(error), ds_cstr(&s)); | |
561 | ds_destroy(&s); | |
562 | } | |
563 | } | |
564 | ||
f25d0cf3 | 565 | static enum ofperr |
0300caaf IY |
566 | ofpacts_from_openflow(const union ofp_action *in, size_t n_in, |
567 | struct ofpbuf *out, | |
568 | enum ofperr (*ofpact_from_openflow)( | |
569 | const union ofp_action *a, struct ofpbuf *out)) | |
f25d0cf3 BP |
570 | { |
571 | const union ofp_action *a; | |
572 | size_t left; | |
573 | ||
574 | ACTION_FOR_EACH (a, left, in, n_in) { | |
0300caaf | 575 | enum ofperr error = ofpact_from_openflow(a, out); |
f25d0cf3 | 576 | if (error) { |
699dddf1 | 577 | log_bad_action(in, n_in, a - in, error); |
f25d0cf3 BP |
578 | return error; |
579 | } | |
580 | } | |
581 | if (left) { | |
699dddf1 BP |
582 | enum ofperr error = OFPERR_OFPBAC_BAD_LEN; |
583 | log_bad_action(in, n_in, n_in - left, error); | |
584 | return error; | |
f25d0cf3 BP |
585 | } |
586 | ||
587 | ofpact_pad(out); | |
588 | return 0; | |
589 | } | |
590 | ||
0300caaf IY |
591 | static enum ofperr |
592 | ofpacts_from_openflow10(const union ofp_action *in, size_t n_in, | |
593 | struct ofpbuf *out) | |
594 | { | |
595 | return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow10); | |
596 | } | |
597 | ||
d01c980f BP |
598 | static enum ofperr |
599 | ofpacts_pull_actions(struct ofpbuf *openflow, unsigned int actions_len, | |
600 | struct ofpbuf *ofpacts, | |
601 | enum ofperr (*translate)(const union ofp_action *actions, | |
602 | size_t n_actions, | |
603 | struct ofpbuf *ofpacts)) | |
f25d0cf3 BP |
604 | { |
605 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
606 | const union ofp_action *actions; | |
607 | enum ofperr error; | |
608 | ||
609 | ofpbuf_clear(ofpacts); | |
610 | ||
611 | if (actions_len % OFP_ACTION_ALIGN != 0) { | |
612 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
613 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
614 | return OFPERR_OFPBRC_BAD_LEN; | |
615 | } | |
616 | ||
617 | actions = ofpbuf_try_pull(openflow, actions_len); | |
618 | if (actions == NULL) { | |
619 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
620 | "remaining message length (%zu)", | |
621 | actions_len, openflow->size); | |
622 | return OFPERR_OFPBRC_BAD_LEN; | |
623 | } | |
624 | ||
d01c980f | 625 | error = translate(actions, actions_len / OFP_ACTION_ALIGN, ofpacts); |
4cceacb9 JS |
626 | if (error) { |
627 | ofpbuf_clear(ofpacts); | |
628 | return error; | |
629 | } | |
630 | ||
631 | error = ofpacts_verify(ofpacts->data, ofpacts->size); | |
f25d0cf3 BP |
632 | if (error) { |
633 | ofpbuf_clear(ofpacts); | |
634 | } | |
d01c980f BP |
635 | return error; |
636 | } | |
637 | ||
638 | /* Attempts to convert 'actions_len' bytes of OpenFlow 1.0 actions from the | |
639 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
640 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
641 | * Returns 0 if successful, otherwise an OpenFlow error. | |
642 | * | |
13f894b1 BP |
643 | * The parsed actions are valid generically, but they may not be valid in a |
644 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
645 | * generically, but specific datapaths may only support port numbers in a | |
646 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
647 | * valid in a specific context. */ | |
d01c980f BP |
648 | enum ofperr |
649 | ofpacts_pull_openflow10(struct ofpbuf *openflow, unsigned int actions_len, | |
650 | struct ofpbuf *ofpacts) | |
651 | { | |
652 | return ofpacts_pull_actions(openflow, actions_len, ofpacts, | |
653 | ofpacts_from_openflow10); | |
654 | } | |
655 | \f | |
656 | /* OpenFlow 1.1 actions. */ | |
657 | ||
658 | /* Parses 'a' to determine its type. On success stores the correct type into | |
659 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
660 | * '*code' is indeterminate. | |
661 | * | |
662 | * The caller must have already verified that 'a''s length is potentially | |
663 | * correct (that is, a->header.len is nonzero and a multiple of sizeof(union | |
664 | * ofp_action) and no longer than the amount of space allocated to 'a'). | |
665 | * | |
666 | * This function verifies that 'a''s length is correct for the type of action | |
667 | * that it represents. */ | |
668 | static enum ofperr | |
669 | decode_openflow11_action(const union ofp_action *a, | |
670 | enum ofputil_action_code *code) | |
671 | { | |
3ddcaf2d BP |
672 | uint16_t len; |
673 | ||
d01c980f BP |
674 | switch (a->type) { |
675 | case CONSTANT_HTONS(OFPAT11_EXPERIMENTER): | |
676 | return decode_nxast_action(a, code); | |
677 | ||
3ddcaf2d BP |
678 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
679 | case CONSTANT_HTONS(ENUM): \ | |
680 | len = ntohs(a->header.len); \ | |
681 | if (EXTENSIBLE \ | |
682 | ? len >= sizeof(struct STRUCT) \ | |
683 | : len == sizeof(struct STRUCT)) { \ | |
684 | *code = OFPUTIL_##ENUM; \ | |
685 | return 0; \ | |
686 | } else { \ | |
687 | return OFPERR_OFPBAC_BAD_LEN; \ | |
688 | } \ | |
689 | NOT_REACHED(); | |
d01c980f BP |
690 | #include "ofp-util.def" |
691 | ||
692 | default: | |
693 | return OFPERR_OFPBAC_BAD_TYPE; | |
694 | } | |
695 | } | |
696 | ||
697 | static enum ofperr | |
698 | output_from_openflow11(const struct ofp11_action_output *oao, | |
699 | struct ofpbuf *out) | |
700 | { | |
701 | struct ofpact_output *output; | |
702 | enum ofperr error; | |
703 | ||
704 | output = ofpact_put_OUTPUT(out); | |
705 | output->max_len = ntohs(oao->max_len); | |
706 | ||
707 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
708 | if (error) { | |
709 | return error; | |
710 | } | |
711 | ||
712 | return ofputil_check_output_port(output->port, OFPP_MAX); | |
713 | } | |
714 | ||
715 | static enum ofperr | |
716 | ofpact_from_openflow11(const union ofp_action *a, struct ofpbuf *out) | |
717 | { | |
718 | enum ofputil_action_code code; | |
719 | enum ofperr error; | |
720 | ||
721 | error = decode_openflow11_action(a, &code); | |
722 | if (error) { | |
723 | return error; | |
724 | } | |
725 | ||
726 | switch (code) { | |
727 | case OFPUTIL_ACTION_INVALID: | |
728 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: | |
729 | #include "ofp-util.def" | |
730 | NOT_REACHED(); | |
731 | ||
732 | case OFPUTIL_OFPAT11_OUTPUT: | |
733 | return output_from_openflow11((const struct ofp11_action_output *) a, | |
734 | out); | |
735 | ||
736 | case OFPUTIL_OFPAT11_SET_VLAN_VID: | |
737 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
738 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
739 | } | |
740 | ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
741 | break; | |
742 | ||
743 | case OFPUTIL_OFPAT11_SET_VLAN_PCP: | |
744 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
745 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
746 | } | |
747 | ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
748 | break; | |
749 | ||
3e34fbdd IY |
750 | case OFPUTIL_OFPAT11_PUSH_VLAN: |
751 | if (((const struct ofp11_action_push *)a)->ethertype != | |
752 | htons(ETH_TYPE_VLAN_8021Q)) { | |
5dca28b5 | 753 | /* XXX 802.1AD(QinQ) isn't supported at the moment */ |
15549878 | 754 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
3e34fbdd IY |
755 | } |
756 | ofpact_put_PUSH_VLAN(out); | |
757 | break; | |
758 | ||
8e61c110 IY |
759 | case OFPUTIL_OFPAT11_POP_VLAN: |
760 | ofpact_put_STRIP_VLAN(out); | |
761 | break; | |
762 | ||
276c4e7a SH |
763 | case OFPUTIL_OFPAT11_SET_QUEUE: |
764 | ofpact_put_SET_QUEUE(out)->queue_id = | |
765 | ntohl(((const struct ofp11_action_set_queue *)a)->queue_id); | |
766 | break; | |
767 | ||
d01c980f BP |
768 | case OFPUTIL_OFPAT11_SET_DL_SRC: |
769 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, | |
770 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
771 | break; | |
772 | ||
773 | case OFPUTIL_OFPAT11_SET_DL_DST: | |
774 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, | |
775 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
776 | break; | |
777 | ||
7bcb1506 IY |
778 | case OFPUTIL_OFPAT11_DEC_NW_TTL: |
779 | dec_ttl_from_openflow(out, code); | |
780 | break; | |
781 | ||
d01c980f BP |
782 | case OFPUTIL_OFPAT11_SET_NW_SRC: |
783 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
784 | break; | |
785 | ||
786 | case OFPUTIL_OFPAT11_SET_NW_DST: | |
787 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
788 | break; | |
789 | ||
790 | case OFPUTIL_OFPAT11_SET_NW_TOS: | |
791 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
792 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
793 | } | |
794 | ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos; | |
795 | break; | |
796 | ||
797 | case OFPUTIL_OFPAT11_SET_TP_SRC: | |
798 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
799 | break; | |
800 | ||
801 | case OFPUTIL_OFPAT11_SET_TP_DST: | |
802 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
803 | break; | |
804 | ||
e9536ecb | 805 | case OFPUTIL_OFPAT12_SET_FIELD: |
d55b18c8 IY |
806 | return nxm_reg_load_from_openflow12_set_field( |
807 | (const struct ofp12_action_set_field *)a, out); | |
e9536ecb | 808 | |
0f3f3c3d SH |
809 | case OFPUTIL_OFPAT11_SET_MPLS_TTL: { |
810 | struct ofp11_action_mpls_ttl *oamt = (struct ofp11_action_mpls_ttl *)a; | |
811 | ofpact_put_SET_MPLS_TTL(out)->ttl = oamt->mpls_ttl; | |
812 | break; | |
813 | } | |
814 | ||
b676167a SH |
815 | case OFPUTIL_OFPAT11_DEC_MPLS_TTL: |
816 | ofpact_put_DEC_MPLS_TTL(out); | |
817 | break; | |
818 | ||
b02475c5 SH |
819 | case OFPUTIL_OFPAT11_PUSH_MPLS: { |
820 | struct ofp11_action_push *oap = (struct ofp11_action_push *)a; | |
821 | if (!eth_type_mpls(oap->ethertype)) { | |
822 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
823 | } | |
824 | ofpact_put_PUSH_MPLS(out)->ethertype = oap->ethertype; | |
825 | break; | |
826 | } | |
827 | ||
828 | case OFPUTIL_OFPAT11_POP_MPLS: { | |
829 | struct ofp11_action_pop_mpls *oapm = (struct ofp11_action_pop_mpls *)a; | |
830 | if (eth_type_mpls(oapm->ethertype)) { | |
831 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
832 | } | |
833 | ofpact_put_POP_MPLS(out)->ethertype = oapm->ethertype; | |
834 | break; | |
835 | } | |
836 | ||
d01c980f BP |
837 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
838 | #include "ofp-util.def" | |
839 | return ofpact_from_nxast(a, code, out); | |
840 | } | |
841 | ||
842 | return error; | |
843 | } | |
844 | ||
845 | static enum ofperr | |
846 | ofpacts_from_openflow11(const union ofp_action *in, size_t n_in, | |
847 | struct ofpbuf *out) | |
848 | { | |
0300caaf | 849 | return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow11); |
f25d0cf3 BP |
850 | } |
851 | \f | |
d01c980f BP |
852 | /* OpenFlow 1.1 instructions. */ |
853 | ||
d01c980f | 854 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
a359d5ad IY |
855 | static inline const struct STRUCT * \ |
856 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
857 | { \ | |
cb22974d | 858 | ovs_assert(inst->type == htons(ENUM)); \ |
a359d5ad IY |
859 | return (struct STRUCT *)inst; \ |
860 | } \ | |
861 | \ | |
d01c980f BP |
862 | static inline void \ |
863 | instruction_init_##ENUM(struct STRUCT *s) \ | |
864 | { \ | |
865 | memset(s, 0, sizeof *s); \ | |
866 | s->type = htons(ENUM); \ | |
867 | s->len = htons(sizeof *s); \ | |
868 | } \ | |
869 | \ | |
870 | static inline struct STRUCT * \ | |
871 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
872 | { \ | |
873 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
874 | instruction_init_##ENUM(s); \ | |
875 | return s; \ | |
876 | } | |
877 | OVS_INSTRUCTIONS | |
878 | #undef DEFINE_INST | |
879 | ||
a359d5ad IY |
880 | struct instruction_type_info { |
881 | enum ovs_instruction_type type; | |
882 | const char *name; | |
883 | }; | |
884 | ||
885 | static const struct instruction_type_info inst_info[] = { | |
886 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
887 | OVS_INSTRUCTIONS | |
888 | #undef DEFINE_INST | |
889 | }; | |
890 | ||
891 | const char * | |
892 | ofpact_instruction_name_from_type(enum ovs_instruction_type type) | |
893 | { | |
6ae0fd54 | 894 | return inst_info[type].name; |
a359d5ad IY |
895 | } |
896 | ||
897 | int | |
898 | ofpact_instruction_type_from_name(const char *name) | |
899 | { | |
900 | const struct instruction_type_info *p; | |
901 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
902 | if (!strcasecmp(name, p->name)) { | |
903 | return p->type; | |
904 | } | |
905 | } | |
906 | return -1; | |
907 | } | |
908 | ||
d01c980f BP |
909 | static inline struct ofp11_instruction * |
910 | instruction_next(const struct ofp11_instruction *inst) | |
911 | { | |
912 | return ((struct ofp11_instruction *) (void *) | |
913 | ((uint8_t *) inst + ntohs(inst->len))); | |
914 | } | |
915 | ||
916 | static inline bool | |
917 | instruction_is_valid(const struct ofp11_instruction *inst, | |
918 | size_t n_instructions) | |
919 | { | |
920 | uint16_t len = ntohs(inst->len); | |
921 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
922 | && len >= sizeof *inst | |
923 | && len / sizeof *inst <= n_instructions); | |
924 | } | |
925 | ||
926 | /* This macro is careful to check for instructions with bad lengths. */ | |
927 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
928 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
929 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
930 | ((LEFT) -= (ntohs((ITER)->len) \ | |
931 | / sizeof(struct ofp11_instruction)), \ | |
932 | (ITER) = instruction_next(ITER))) | |
933 | ||
934 | static enum ofperr | |
935 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
936 | enum ovs_instruction_type *type) | |
937 | { | |
938 | uint16_t len = ntohs(inst->len); | |
939 | ||
940 | switch (inst->type) { | |
941 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
942 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
943 | ||
944 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
945 | case CONSTANT_HTONS(ENUM): \ | |
946 | if (EXTENSIBLE \ | |
947 | ? len >= sizeof(struct STRUCT) \ | |
948 | : len == sizeof(struct STRUCT)) { \ | |
949 | *type = OVSINST_##ENUM; \ | |
950 | return 0; \ | |
951 | } else { \ | |
952 | return OFPERR_OFPBIC_BAD_LEN; \ | |
953 | } | |
954 | OVS_INSTRUCTIONS | |
955 | #undef DEFINE_INST | |
956 | ||
957 | default: | |
958 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
959 | } | |
960 | } | |
961 | ||
962 | static enum ofperr | |
963 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
964 | size_t n_insts, | |
965 | const struct ofp11_instruction *out[]) | |
966 | { | |
967 | const struct ofp11_instruction *inst; | |
968 | size_t left; | |
969 | ||
970 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); | |
971 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
972 | enum ovs_instruction_type type; | |
973 | enum ofperr error; | |
974 | ||
975 | error = decode_openflow11_instruction(inst, &type); | |
976 | if (error) { | |
977 | return error; | |
978 | } | |
979 | ||
980 | if (out[type]) { | |
15549878 JR |
981 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; /* No specific code for |
982 | * a duplicate instruction | |
983 | * exist */ | |
d01c980f BP |
984 | } |
985 | out[type] = inst; | |
986 | } | |
987 | ||
988 | if (left) { | |
989 | VLOG_WARN_RL(&rl, "bad instruction format at offset %zu", | |
990 | (n_insts - left) * sizeof *inst); | |
991 | return OFPERR_OFPBIC_BAD_LEN; | |
992 | } | |
993 | return 0; | |
994 | } | |
995 | ||
996 | static void | |
997 | get_actions_from_instruction(const struct ofp11_instruction *inst, | |
998 | const union ofp_action **actions, | |
999 | size_t *n_actions) | |
1000 | { | |
1001 | *actions = (const union ofp_action *) (inst + 1); | |
1002 | *n_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN; | |
1003 | } | |
1004 | ||
1005 | /* Attempts to convert 'actions_len' bytes of OpenFlow 1.1 actions from the | |
1006 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
1007 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
1008 | * Returns 0 if successful, otherwise an OpenFlow error. | |
1009 | * | |
1010 | * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in | |
1011 | * instructions, so you should call ofpacts_pull_openflow11_instructions() | |
1012 | * instead of this function. | |
1013 | * | |
13f894b1 BP |
1014 | * The parsed actions are valid generically, but they may not be valid in a |
1015 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
1016 | * generically, but specific datapaths may only support port numbers in a | |
1017 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
1018 | * valid in a specific context. */ | |
d01c980f BP |
1019 | enum ofperr |
1020 | ofpacts_pull_openflow11_actions(struct ofpbuf *openflow, | |
1021 | unsigned int actions_len, | |
1022 | struct ofpbuf *ofpacts) | |
1023 | { | |
0300caaf IY |
1024 | return ofpacts_pull_actions(openflow, actions_len, ofpacts, |
1025 | ofpacts_from_openflow11); | |
d01c980f BP |
1026 | } |
1027 | ||
1028 | enum ofperr | |
1029 | ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow, | |
1030 | unsigned int instructions_len, | |
1031 | struct ofpbuf *ofpacts) | |
1032 | { | |
1033 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1034 | const struct ofp11_instruction *instructions; | |
1035 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
1036 | enum ofperr error; | |
1037 | ||
1038 | ofpbuf_clear(ofpacts); | |
1039 | ||
1040 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { | |
1041 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
1042 | "multiple of %d", | |
1043 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
1044 | error = OFPERR_OFPBIC_BAD_LEN; | |
1045 | goto exit; | |
1046 | } | |
1047 | ||
1048 | instructions = ofpbuf_try_pull(openflow, instructions_len); | |
1049 | if (instructions == NULL) { | |
1050 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
1051 | "remaining message length (%zu)", | |
1052 | instructions_len, openflow->size); | |
1053 | error = OFPERR_OFPBIC_BAD_LEN; | |
1054 | goto exit; | |
1055 | } | |
1056 | ||
1057 | error = decode_openflow11_instructions( | |
1058 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
1059 | insts); | |
1060 | if (error) { | |
1061 | goto exit; | |
1062 | } | |
1063 | ||
1064 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
1065 | const union ofp_action *actions; | |
1066 | size_t n_actions; | |
1067 | ||
1068 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], | |
1069 | &actions, &n_actions); | |
1070 | error = ofpacts_from_openflow11(actions, n_actions, ofpacts); | |
1071 | if (error) { | |
1072 | goto exit; | |
1073 | } | |
1074 | } | |
b19e8793 IY |
1075 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { |
1076 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
1077 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
1078 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
1079 | } | |
5dca28b5 | 1080 | /* XXX Write-Actions */ |
4cceacb9 JS |
1081 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { |
1082 | const struct ofp11_instruction_write_metadata *oiwm; | |
1083 | struct ofpact_metadata *om; | |
1084 | ||
1085 | oiwm = (const struct ofp11_instruction_write_metadata *) | |
1086 | insts[OVSINST_OFPIT11_WRITE_METADATA]; | |
1087 | ||
1088 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
1089 | om->metadata = oiwm->metadata; | |
1090 | om->mask = oiwm->metadata_mask; | |
1091 | } | |
8dd54666 IY |
1092 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { |
1093 | const struct ofp11_instruction_goto_table *oigt; | |
1094 | struct ofpact_goto_table *ogt; | |
1095 | ||
1096 | oigt = instruction_get_OFPIT11_GOTO_TABLE( | |
1097 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
1098 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
1099 | ogt->table_id = oigt->table_id; | |
1100 | } | |
d01c980f | 1101 | |
4cceacb9 | 1102 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { |
d01c980f BP |
1103 | error = OFPERR_OFPBIC_UNSUP_INST; |
1104 | goto exit; | |
1105 | } | |
1106 | ||
4cceacb9 | 1107 | error = ofpacts_verify(ofpacts->data, ofpacts->size); |
d01c980f BP |
1108 | exit: |
1109 | if (error) { | |
1110 | ofpbuf_clear(ofpacts); | |
1111 | } | |
1112 | return error; | |
1113 | } | |
1114 | \f | |
f25d0cf3 | 1115 | static enum ofperr |
b02475c5 SH |
1116 | ofpact_check__(const struct ofpact *a, const struct flow *flow, int max_ports, |
1117 | ovs_be16 *dl_type) | |
f25d0cf3 BP |
1118 | { |
1119 | const struct ofpact_enqueue *enqueue; | |
1120 | ||
1121 | switch (a->type) { | |
1122 | case OFPACT_OUTPUT: | |
1123 | return ofputil_check_output_port(ofpact_get_OUTPUT(a)->port, | |
1124 | max_ports); | |
1125 | ||
1126 | case OFPACT_CONTROLLER: | |
1127 | return 0; | |
1128 | ||
1129 | case OFPACT_ENQUEUE: | |
1130 | enqueue = ofpact_get_ENQUEUE(a); | |
1131 | if (enqueue->port >= max_ports && enqueue->port != OFPP_IN_PORT | |
1132 | && enqueue->port != OFPP_LOCAL) { | |
1133 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1134 | } | |
1135 | return 0; | |
1136 | ||
1137 | case OFPACT_OUTPUT_REG: | |
1138 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
1139 | ||
1140 | case OFPACT_BUNDLE: | |
1141 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
1142 | ||
1143 | case OFPACT_SET_VLAN_VID: | |
1144 | case OFPACT_SET_VLAN_PCP: | |
1145 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 1146 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
1147 | case OFPACT_SET_ETH_SRC: |
1148 | case OFPACT_SET_ETH_DST: | |
1149 | case OFPACT_SET_IPV4_SRC: | |
1150 | case OFPACT_SET_IPV4_DST: | |
1151 | case OFPACT_SET_IPV4_DSCP: | |
1152 | case OFPACT_SET_L4_SRC_PORT: | |
1153 | case OFPACT_SET_L4_DST_PORT: | |
1154 | return 0; | |
1155 | ||
1156 | case OFPACT_REG_MOVE: | |
1157 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
1158 | ||
1159 | case OFPACT_REG_LOAD: | |
b02475c5 SH |
1160 | if (*dl_type != flow->dl_type) { |
1161 | struct flow updated_flow = *flow; | |
1162 | updated_flow.dl_type = *dl_type; | |
1163 | return nxm_reg_load_check(ofpact_get_REG_LOAD(a), &updated_flow); | |
1164 | } else { | |
1165 | return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow); | |
1166 | } | |
f25d0cf3 | 1167 | |
bd85dac1 AZ |
1168 | case OFPACT_STACK_PUSH: |
1169 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow); | |
1170 | ||
1171 | case OFPACT_STACK_POP: | |
1172 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), flow); | |
1173 | ||
f25d0cf3 | 1174 | case OFPACT_DEC_TTL: |
0f3f3c3d | 1175 | case OFPACT_SET_MPLS_TTL: |
b676167a | 1176 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 BP |
1177 | case OFPACT_SET_TUNNEL: |
1178 | case OFPACT_SET_QUEUE: | |
1179 | case OFPACT_POP_QUEUE: | |
1180 | case OFPACT_FIN_TIMEOUT: | |
1181 | case OFPACT_RESUBMIT: | |
1182 | return 0; | |
1183 | ||
1184 | case OFPACT_LEARN: | |
1185 | return learn_check(ofpact_get_LEARN(a), flow); | |
1186 | ||
1187 | case OFPACT_MULTIPATH: | |
1188 | return multipath_check(ofpact_get_MULTIPATH(a), flow); | |
1189 | ||
f25d0cf3 BP |
1190 | case OFPACT_NOTE: |
1191 | case OFPACT_EXIT: | |
1192 | return 0; | |
1193 | ||
b02475c5 SH |
1194 | case OFPACT_PUSH_MPLS: |
1195 | *dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; | |
1196 | return 0; | |
1197 | ||
1198 | case OFPACT_POP_MPLS: | |
1199 | *dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
1200 | return 0; | |
1201 | ||
b19e8793 | 1202 | case OFPACT_CLEAR_ACTIONS: |
4cceacb9 | 1203 | case OFPACT_WRITE_METADATA: |
8dd54666 IY |
1204 | case OFPACT_GOTO_TABLE: |
1205 | return 0; | |
1206 | ||
f25d0cf3 BP |
1207 | default: |
1208 | NOT_REACHED(); | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are | |
1213 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
1214 | * switch with no more than 'max_ports' ports. */ | |
1215 | enum ofperr | |
1216 | ofpacts_check(const struct ofpact ofpacts[], size_t ofpacts_len, | |
1217 | const struct flow *flow, int max_ports) | |
1218 | { | |
1219 | const struct ofpact *a; | |
b02475c5 | 1220 | ovs_be16 dl_type = flow->dl_type; |
f25d0cf3 BP |
1221 | |
1222 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
b02475c5 | 1223 | enum ofperr error = ofpact_check__(a, flow, max_ports, &dl_type); |
f25d0cf3 BP |
1224 | if (error) { |
1225 | return error; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | return 0; | |
1230 | } | |
4cceacb9 JS |
1231 | |
1232 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are | |
1233 | * in the appropriate order as defined by the OpenFlow spec. */ | |
1234 | enum ofperr | |
1235 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len) | |
1236 | { | |
1237 | const struct ofpact *a; | |
6813ee7c | 1238 | enum ovs_instruction_type inst; |
4cceacb9 | 1239 | |
6813ee7c | 1240 | inst = OVSINST_OFPIT11_APPLY_ACTIONS; |
4cceacb9 | 1241 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
6813ee7c BP |
1242 | enum ovs_instruction_type next; |
1243 | ||
1244 | if (a->type == OFPACT_CLEAR_ACTIONS) { | |
1245 | next = OVSINST_OFPIT11_CLEAR_ACTIONS; | |
1246 | } else if (a->type == OFPACT_WRITE_METADATA) { | |
1247 | next = OVSINST_OFPIT11_WRITE_METADATA; | |
1248 | } else if (a->type == OFPACT_GOTO_TABLE) { | |
1249 | next = OVSINST_OFPIT11_GOTO_TABLE; | |
1250 | } else { | |
1251 | next = OVSINST_OFPIT11_APPLY_ACTIONS; | |
1252 | } | |
1253 | ||
1254 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS && next <= inst) { | |
1255 | const char *name = ofpact_instruction_name_from_type(inst); | |
1256 | const char *next_name = ofpact_instruction_name_from_type(next); | |
1257 | ||
1258 | if (next == inst) { | |
1259 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
1260 | "1.1+ compatibility", name); | |
4cceacb9 | 1261 | } else { |
6813ee7c BP |
1262 | VLOG_WARN("invalid instruction ordering: %s must appear " |
1263 | "before %s, for OpenFlow 1.1+ compatibility", | |
1264 | next_name, name); | |
4cceacb9 | 1265 | } |
6813ee7c | 1266 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; |
4cceacb9 JS |
1267 | } |
1268 | ||
6813ee7c | 1269 | inst = next; |
4cceacb9 JS |
1270 | } |
1271 | ||
1272 | return 0; | |
1273 | } | |
f25d0cf3 BP |
1274 | \f |
1275 | /* Converting ofpacts to Nicira OpenFlow extensions. */ | |
1276 | ||
1277 | static void | |
1278 | ofpact_output_reg_to_nxast(const struct ofpact_output_reg *output_reg, | |
1279 | struct ofpbuf *out) | |
1280 | { | |
1281 | struct nx_action_output_reg *naor = ofputil_put_NXAST_OUTPUT_REG(out); | |
1282 | ||
1283 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1284 | output_reg->src.n_bits); | |
1285 | naor->src = htonl(output_reg->src.field->nxm_header); | |
1286 | naor->max_len = htons(output_reg->max_len); | |
1287 | } | |
1288 | ||
1289 | static void | |
1290 | ofpact_resubmit_to_nxast(const struct ofpact_resubmit *resubmit, | |
1291 | struct ofpbuf *out) | |
1292 | { | |
1293 | struct nx_action_resubmit *nar; | |
1294 | ||
1295 | if (resubmit->table_id == 0xff | |
1296 | && resubmit->ofpact.compat != OFPUTIL_NXAST_RESUBMIT_TABLE) { | |
1297 | nar = ofputil_put_NXAST_RESUBMIT(out); | |
1298 | } else { | |
1299 | nar = ofputil_put_NXAST_RESUBMIT_TABLE(out); | |
1300 | nar->table = resubmit->table_id; | |
1301 | } | |
1302 | nar->in_port = htons(resubmit->in_port); | |
1303 | } | |
1304 | ||
1305 | static void | |
1306 | ofpact_set_tunnel_to_nxast(const struct ofpact_tunnel *tunnel, | |
1307 | struct ofpbuf *out) | |
1308 | { | |
1309 | uint64_t tun_id = tunnel->tun_id; | |
1310 | ||
1311 | if (tun_id <= UINT32_MAX | |
1312 | && tunnel->ofpact.compat != OFPUTIL_NXAST_SET_TUNNEL64) { | |
1313 | ofputil_put_NXAST_SET_TUNNEL(out)->tun_id = htonl(tun_id); | |
1314 | } else { | |
1315 | ofputil_put_NXAST_SET_TUNNEL64(out)->tun_id = htonll(tun_id); | |
1316 | } | |
1317 | } | |
1318 | ||
4cceacb9 JS |
1319 | static void |
1320 | ofpact_write_metadata_to_nxast(const struct ofpact_metadata *om, | |
1321 | struct ofpbuf *out) | |
1322 | { | |
1323 | struct nx_action_write_metadata *nawm; | |
1324 | ||
1325 | nawm = ofputil_put_NXAST_WRITE_METADATA(out); | |
1326 | nawm->metadata = om->metadata; | |
1327 | nawm->mask = om->mask; | |
1328 | } | |
1329 | ||
f25d0cf3 BP |
1330 | static void |
1331 | ofpact_note_to_nxast(const struct ofpact_note *note, struct ofpbuf *out) | |
1332 | { | |
1333 | size_t start_ofs = out->size; | |
1334 | struct nx_action_note *nan; | |
1335 | unsigned int remainder; | |
1336 | unsigned int len; | |
1337 | ||
1338 | nan = ofputil_put_NXAST_NOTE(out); | |
1339 | out->size -= sizeof nan->note; | |
1340 | ||
1341 | ofpbuf_put(out, note->data, note->length); | |
1342 | ||
1343 | len = out->size - start_ofs; | |
1344 | remainder = len % OFP_ACTION_ALIGN; | |
1345 | if (remainder) { | |
1346 | ofpbuf_put_zeros(out, OFP_ACTION_ALIGN - remainder); | |
1347 | } | |
1348 | nan = (struct nx_action_note *)((char *)out->data + start_ofs); | |
1349 | nan->len = htons(out->size - start_ofs); | |
1350 | } | |
1351 | ||
1352 | static void | |
1353 | ofpact_controller_to_nxast(const struct ofpact_controller *oc, | |
1354 | struct ofpbuf *out) | |
1355 | { | |
1356 | struct nx_action_controller *nac; | |
1357 | ||
1358 | nac = ofputil_put_NXAST_CONTROLLER(out); | |
1359 | nac->max_len = htons(oc->max_len); | |
1360 | nac->controller_id = htons(oc->controller_id); | |
1361 | nac->reason = oc->reason; | |
1362 | } | |
1363 | ||
c2d967a5 MM |
1364 | static void |
1365 | ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids, | |
1366 | struct ofpbuf *out) | |
1367 | { | |
1368 | if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) { | |
1369 | ofputil_put_NXAST_DEC_TTL(out); | |
1370 | } else { | |
1371 | struct nx_action_cnt_ids *nac_ids = | |
1372 | ofputil_put_NXAST_DEC_TTL_CNT_IDS(out); | |
1373 | int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN); | |
1374 | ovs_be16 *ids; | |
1375 | size_t i; | |
1376 | ||
1377 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); | |
1378 | nac_ids->n_controllers = htons(oc_ids->n_controllers); | |
1379 | ||
1380 | ids = ofpbuf_put_zeros(out, ids_len); | |
1381 | for (i = 0; i < oc_ids->n_controllers; i++) { | |
1382 | ids[i] = htons(oc_ids->cnt_ids[i]); | |
1383 | } | |
1384 | } | |
1385 | } | |
1386 | ||
f25d0cf3 BP |
1387 | static void |
1388 | ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout, | |
1389 | struct ofpbuf *out) | |
1390 | { | |
1391 | struct nx_action_fin_timeout *naft = ofputil_put_NXAST_FIN_TIMEOUT(out); | |
1392 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
1393 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
1394 | } | |
1395 | ||
1396 | static void | |
1397 | ofpact_to_nxast(const struct ofpact *a, struct ofpbuf *out) | |
1398 | { | |
1399 | switch (a->type) { | |
1400 | case OFPACT_CONTROLLER: | |
1401 | ofpact_controller_to_nxast(ofpact_get_CONTROLLER(a), out); | |
1402 | break; | |
1403 | ||
1404 | case OFPACT_OUTPUT_REG: | |
1405 | ofpact_output_reg_to_nxast(ofpact_get_OUTPUT_REG(a), out); | |
1406 | break; | |
1407 | ||
1408 | case OFPACT_BUNDLE: | |
1409 | bundle_to_nxast(ofpact_get_BUNDLE(a), out); | |
1410 | break; | |
1411 | ||
1412 | case OFPACT_REG_MOVE: | |
1413 | nxm_reg_move_to_nxast(ofpact_get_REG_MOVE(a), out); | |
1414 | break; | |
1415 | ||
1416 | case OFPACT_REG_LOAD: | |
1417 | nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out); | |
1418 | break; | |
1419 | ||
bd85dac1 AZ |
1420 | case OFPACT_STACK_PUSH: |
1421 | nxm_stack_push_to_nxast(ofpact_get_STACK_PUSH(a), out); | |
1422 | break; | |
1423 | ||
1424 | case OFPACT_STACK_POP: | |
1425 | nxm_stack_pop_to_nxast(ofpact_get_STACK_POP(a), out); | |
1426 | break; | |
1427 | ||
f25d0cf3 | 1428 | case OFPACT_DEC_TTL: |
c2d967a5 | 1429 | ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out); |
f25d0cf3 BP |
1430 | break; |
1431 | ||
0f3f3c3d SH |
1432 | case OFPACT_SET_MPLS_TTL: |
1433 | ofputil_put_NXAST_SET_MPLS_TTL(out)->ttl | |
1434 | = ofpact_get_SET_MPLS_TTL(a)->ttl; | |
1435 | break; | |
1436 | ||
b676167a SH |
1437 | case OFPACT_DEC_MPLS_TTL: |
1438 | ofputil_put_NXAST_DEC_MPLS_TTL(out); | |
1439 | break; | |
1440 | ||
f25d0cf3 BP |
1441 | case OFPACT_SET_TUNNEL: |
1442 | ofpact_set_tunnel_to_nxast(ofpact_get_SET_TUNNEL(a), out); | |
1443 | break; | |
1444 | ||
4cceacb9 JS |
1445 | case OFPACT_WRITE_METADATA: |
1446 | ofpact_write_metadata_to_nxast(ofpact_get_WRITE_METADATA(a), out); | |
1447 | break; | |
1448 | ||
f25d0cf3 BP |
1449 | case OFPACT_SET_QUEUE: |
1450 | ofputil_put_NXAST_SET_QUEUE(out)->queue_id | |
1451 | = htonl(ofpact_get_SET_QUEUE(a)->queue_id); | |
1452 | break; | |
1453 | ||
1454 | case OFPACT_POP_QUEUE: | |
1455 | ofputil_put_NXAST_POP_QUEUE(out); | |
1456 | break; | |
1457 | ||
1458 | case OFPACT_FIN_TIMEOUT: | |
1459 | ofpact_fin_timeout_to_nxast(ofpact_get_FIN_TIMEOUT(a), out); | |
1460 | break; | |
1461 | ||
1462 | case OFPACT_RESUBMIT: | |
1463 | ofpact_resubmit_to_nxast(ofpact_get_RESUBMIT(a), out); | |
1464 | break; | |
1465 | ||
1466 | case OFPACT_LEARN: | |
1467 | learn_to_nxast(ofpact_get_LEARN(a), out); | |
1468 | break; | |
1469 | ||
1470 | case OFPACT_MULTIPATH: | |
1471 | multipath_to_nxast(ofpact_get_MULTIPATH(a), out); | |
1472 | break; | |
1473 | ||
f25d0cf3 BP |
1474 | case OFPACT_NOTE: |
1475 | ofpact_note_to_nxast(ofpact_get_NOTE(a), out); | |
1476 | break; | |
1477 | ||
1478 | case OFPACT_EXIT: | |
1479 | ofputil_put_NXAST_EXIT(out); | |
1480 | break; | |
1481 | ||
b02475c5 SH |
1482 | case OFPACT_PUSH_MPLS: |
1483 | ofputil_put_NXAST_PUSH_MPLS(out)->ethertype = | |
1484 | ofpact_get_PUSH_MPLS(a)->ethertype; | |
1485 | break; | |
1486 | ||
1487 | case OFPACT_POP_MPLS: | |
1488 | ofputil_put_NXAST_POP_MPLS(out)->ethertype = | |
1489 | ofpact_get_POP_MPLS(a)->ethertype; | |
1490 | break; | |
1491 | ||
f25d0cf3 BP |
1492 | case OFPACT_OUTPUT: |
1493 | case OFPACT_ENQUEUE: | |
1494 | case OFPACT_SET_VLAN_VID: | |
1495 | case OFPACT_SET_VLAN_PCP: | |
1496 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 1497 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
1498 | case OFPACT_SET_ETH_SRC: |
1499 | case OFPACT_SET_ETH_DST: | |
1500 | case OFPACT_SET_IPV4_SRC: | |
1501 | case OFPACT_SET_IPV4_DST: | |
1502 | case OFPACT_SET_IPV4_DSCP: | |
1503 | case OFPACT_SET_L4_SRC_PORT: | |
1504 | case OFPACT_SET_L4_DST_PORT: | |
b19e8793 | 1505 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 | 1506 | case OFPACT_GOTO_TABLE: |
f25d0cf3 BP |
1507 | NOT_REACHED(); |
1508 | } | |
1509 | } | |
1510 | \f | |
1511 | /* Converting ofpacts to OpenFlow 1.0. */ | |
1512 | ||
1513 | static void | |
1514 | ofpact_output_to_openflow10(const struct ofpact_output *output, | |
1515 | struct ofpbuf *out) | |
1516 | { | |
d01c980f | 1517 | struct ofp10_action_output *oao; |
f25d0cf3 BP |
1518 | |
1519 | oao = ofputil_put_OFPAT10_OUTPUT(out); | |
1520 | oao->port = htons(output->port); | |
1521 | oao->max_len = htons(output->max_len); | |
1522 | } | |
1523 | ||
1524 | static void | |
1525 | ofpact_enqueue_to_openflow10(const struct ofpact_enqueue *enqueue, | |
1526 | struct ofpbuf *out) | |
1527 | { | |
31a9e63f | 1528 | struct ofp10_action_enqueue *oae; |
f25d0cf3 BP |
1529 | |
1530 | oae = ofputil_put_OFPAT10_ENQUEUE(out); | |
1531 | oae->port = htons(enqueue->port); | |
1532 | oae->queue_id = htonl(enqueue->queue); | |
1533 | } | |
1534 | ||
1535 | static void | |
1536 | ofpact_to_openflow10(const struct ofpact *a, struct ofpbuf *out) | |
1537 | { | |
1538 | switch (a->type) { | |
1539 | case OFPACT_OUTPUT: | |
1540 | ofpact_output_to_openflow10(ofpact_get_OUTPUT(a), out); | |
1541 | break; | |
1542 | ||
1543 | case OFPACT_ENQUEUE: | |
1544 | ofpact_enqueue_to_openflow10(ofpact_get_ENQUEUE(a), out); | |
1545 | break; | |
1546 | ||
1547 | case OFPACT_SET_VLAN_VID: | |
1548 | ofputil_put_OFPAT10_SET_VLAN_VID(out)->vlan_vid | |
1549 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1550 | break; | |
1551 | ||
1552 | case OFPACT_SET_VLAN_PCP: | |
1553 | ofputil_put_OFPAT10_SET_VLAN_PCP(out)->vlan_pcp | |
1554 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
1555 | break; | |
1556 | ||
1557 | case OFPACT_STRIP_VLAN: | |
1558 | ofputil_put_OFPAT10_STRIP_VLAN(out); | |
1559 | break; | |
1560 | ||
1561 | case OFPACT_SET_ETH_SRC: | |
1562 | memcpy(ofputil_put_OFPAT10_SET_DL_SRC(out)->dl_addr, | |
1563 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
1564 | break; | |
1565 | ||
1566 | case OFPACT_SET_ETH_DST: | |
1567 | memcpy(ofputil_put_OFPAT10_SET_DL_DST(out)->dl_addr, | |
1568 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
1569 | break; | |
1570 | ||
1571 | case OFPACT_SET_IPV4_SRC: | |
1572 | ofputil_put_OFPAT10_SET_NW_SRC(out)->nw_addr | |
1573 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
1574 | break; | |
1575 | ||
1576 | case OFPACT_SET_IPV4_DST: | |
1577 | ofputil_put_OFPAT10_SET_NW_DST(out)->nw_addr | |
1578 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
1579 | break; | |
1580 | ||
1581 | case OFPACT_SET_IPV4_DSCP: | |
1582 | ofputil_put_OFPAT10_SET_NW_TOS(out)->nw_tos | |
1583 | = ofpact_get_SET_IPV4_DSCP(a)->dscp; | |
1584 | break; | |
1585 | ||
1586 | case OFPACT_SET_L4_SRC_PORT: | |
1587 | ofputil_put_OFPAT10_SET_TP_SRC(out)->tp_port | |
1588 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1589 | break; | |
1590 | ||
1591 | case OFPACT_SET_L4_DST_PORT: | |
1592 | ofputil_put_OFPAT10_SET_TP_DST(out)->tp_port | |
1593 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
1594 | break; | |
1595 | ||
3e34fbdd | 1596 | case OFPACT_PUSH_VLAN: |
b19e8793 | 1597 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 | 1598 | case OFPACT_GOTO_TABLE: |
5dca28b5 | 1599 | /* XXX */ |
8dd54666 IY |
1600 | break; |
1601 | ||
f25d0cf3 BP |
1602 | case OFPACT_CONTROLLER: |
1603 | case OFPACT_OUTPUT_REG: | |
1604 | case OFPACT_BUNDLE: | |
1605 | case OFPACT_REG_MOVE: | |
1606 | case OFPACT_REG_LOAD: | |
bd85dac1 AZ |
1607 | case OFPACT_STACK_PUSH: |
1608 | case OFPACT_STACK_POP: | |
f25d0cf3 | 1609 | case OFPACT_DEC_TTL: |
0f3f3c3d | 1610 | case OFPACT_SET_MPLS_TTL: |
b676167a | 1611 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 1612 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 1613 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
1614 | case OFPACT_SET_QUEUE: |
1615 | case OFPACT_POP_QUEUE: | |
1616 | case OFPACT_FIN_TIMEOUT: | |
1617 | case OFPACT_RESUBMIT: | |
1618 | case OFPACT_LEARN: | |
1619 | case OFPACT_MULTIPATH: | |
f25d0cf3 BP |
1620 | case OFPACT_NOTE: |
1621 | case OFPACT_EXIT: | |
b02475c5 SH |
1622 | case OFPACT_PUSH_MPLS: |
1623 | case OFPACT_POP_MPLS: | |
f25d0cf3 BP |
1624 | ofpact_to_nxast(a, out); |
1625 | break; | |
1626 | } | |
1627 | } | |
1628 | ||
d01c980f | 1629 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow 1.0 |
f25d0cf3 BP |
1630 | * actions in 'openflow', appending the actions to any existing data in |
1631 | * 'openflow'. */ | |
1632 | void | |
d01c980f BP |
1633 | ofpacts_put_openflow10(const struct ofpact ofpacts[], size_t ofpacts_len, |
1634 | struct ofpbuf *openflow) | |
f25d0cf3 BP |
1635 | { |
1636 | const struct ofpact *a; | |
1637 | ||
1638 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1639 | ofpact_to_openflow10(a, openflow); | |
1640 | } | |
1641 | } | |
1642 | \f | |
d01c980f BP |
1643 | /* Converting ofpacts to OpenFlow 1.1. */ |
1644 | ||
1645 | static void | |
1646 | ofpact_output_to_openflow11(const struct ofpact_output *output, | |
1647 | struct ofpbuf *out) | |
1648 | { | |
1649 | struct ofp11_action_output *oao; | |
1650 | ||
1651 | oao = ofputil_put_OFPAT11_OUTPUT(out); | |
1652 | oao->port = ofputil_port_to_ofp11(output->port); | |
1653 | oao->max_len = htons(output->max_len); | |
1654 | } | |
1655 | ||
99086062 BP |
1656 | static void |
1657 | ofpact_dec_ttl_to_openflow11(const struct ofpact_cnt_ids *dec_ttl, | |
1658 | struct ofpbuf *out) | |
1659 | { | |
1660 | if (dec_ttl->n_controllers == 1 && dec_ttl->cnt_ids[0] == 0 | |
1661 | && (!dec_ttl->ofpact.compat || | |
1662 | dec_ttl->ofpact.compat == OFPUTIL_OFPAT11_DEC_NW_TTL)) { | |
1663 | ofputil_put_OFPAT11_DEC_NW_TTL(out); | |
1664 | } else { | |
1665 | ofpact_dec_ttl_to_nxast(dec_ttl, out); | |
1666 | } | |
1667 | } | |
1668 | ||
d01c980f BP |
1669 | static void |
1670 | ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out) | |
1671 | { | |
1672 | switch (a->type) { | |
1673 | case OFPACT_OUTPUT: | |
1674 | return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out); | |
1675 | ||
1676 | case OFPACT_ENQUEUE: | |
1677 | /* XXX */ | |
1678 | break; | |
1679 | ||
1680 | case OFPACT_SET_VLAN_VID: | |
1681 | ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid | |
1682 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1683 | break; | |
1684 | ||
1685 | case OFPACT_SET_VLAN_PCP: | |
1686 | ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp | |
1687 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
1688 | break; | |
1689 | ||
1690 | case OFPACT_STRIP_VLAN: | |
8e61c110 | 1691 | ofputil_put_OFPAT11_POP_VLAN(out); |
d01c980f BP |
1692 | break; |
1693 | ||
3e34fbdd | 1694 | case OFPACT_PUSH_VLAN: |
5dca28b5 | 1695 | /* XXX ETH_TYPE_VLAN_8021AD case */ |
3e34fbdd IY |
1696 | ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype = |
1697 | htons(ETH_TYPE_VLAN_8021Q); | |
1698 | break; | |
1699 | ||
276c4e7a SH |
1700 | case OFPACT_SET_QUEUE: |
1701 | ofputil_put_OFPAT11_SET_QUEUE(out)->queue_id | |
1702 | = htonl(ofpact_get_SET_QUEUE(a)->queue_id); | |
1703 | break; | |
1704 | ||
d01c980f BP |
1705 | case OFPACT_SET_ETH_SRC: |
1706 | memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr, | |
1707 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
1708 | break; | |
1709 | ||
1710 | case OFPACT_SET_ETH_DST: | |
1711 | memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr, | |
1712 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
1713 | break; | |
1714 | ||
1715 | case OFPACT_SET_IPV4_SRC: | |
1716 | ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr | |
1717 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
1718 | break; | |
1719 | ||
1720 | case OFPACT_SET_IPV4_DST: | |
1721 | ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr | |
1722 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
1723 | break; | |
1724 | ||
1725 | case OFPACT_SET_IPV4_DSCP: | |
1726 | ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos | |
1727 | = ofpact_get_SET_IPV4_DSCP(a)->dscp; | |
1728 | break; | |
1729 | ||
1730 | case OFPACT_SET_L4_SRC_PORT: | |
1731 | ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port | |
1732 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1733 | break; | |
1734 | ||
1735 | case OFPACT_SET_L4_DST_PORT: | |
1736 | ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port | |
1737 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
1738 | break; | |
1739 | ||
7bcb1506 | 1740 | case OFPACT_DEC_TTL: |
99086062 | 1741 | ofpact_dec_ttl_to_openflow11(ofpact_get_DEC_TTL(a), out); |
7bcb1506 IY |
1742 | break; |
1743 | ||
0f3f3c3d SH |
1744 | case OFPACT_SET_MPLS_TTL: |
1745 | ofputil_put_OFPAT11_SET_MPLS_TTL(out)->mpls_ttl | |
1746 | = ofpact_get_SET_MPLS_TTL(a)->ttl; | |
1747 | break; | |
1748 | ||
b676167a SH |
1749 | case OFPACT_DEC_MPLS_TTL: |
1750 | ofputil_put_OFPAT11_DEC_MPLS_TTL(out); | |
1751 | break; | |
1752 | ||
4cceacb9 JS |
1753 | case OFPACT_WRITE_METADATA: |
1754 | /* OpenFlow 1.1 uses OFPIT_WRITE_METADATA to express this action. */ | |
1755 | break; | |
1756 | ||
b02475c5 SH |
1757 | case OFPACT_PUSH_MPLS: |
1758 | ofputil_put_OFPAT11_PUSH_MPLS(out)->ethertype = | |
1759 | ofpact_get_PUSH_MPLS(a)->ethertype; | |
1760 | break; | |
1761 | ||
1762 | case OFPACT_POP_MPLS: | |
1763 | ofputil_put_OFPAT11_POP_MPLS(out)->ethertype = | |
1764 | ofpact_get_POP_MPLS(a)->ethertype; | |
1765 | ||
1766 | break; | |
1767 | ||
b19e8793 | 1768 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 IY |
1769 | case OFPACT_GOTO_TABLE: |
1770 | NOT_REACHED(); | |
1771 | ||
d01c980f BP |
1772 | case OFPACT_CONTROLLER: |
1773 | case OFPACT_OUTPUT_REG: | |
1774 | case OFPACT_BUNDLE: | |
1775 | case OFPACT_REG_MOVE: | |
1776 | case OFPACT_REG_LOAD: | |
bd85dac1 AZ |
1777 | case OFPACT_STACK_PUSH: |
1778 | case OFPACT_STACK_POP: | |
d01c980f | 1779 | case OFPACT_SET_TUNNEL: |
d01c980f BP |
1780 | case OFPACT_POP_QUEUE: |
1781 | case OFPACT_FIN_TIMEOUT: | |
1782 | case OFPACT_RESUBMIT: | |
1783 | case OFPACT_LEARN: | |
1784 | case OFPACT_MULTIPATH: | |
d01c980f BP |
1785 | case OFPACT_NOTE: |
1786 | case OFPACT_EXIT: | |
1787 | ofpact_to_nxast(a, out); | |
1788 | break; | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | /* Converts the ofpacts in 'ofpacts' (terminated by OFPACT_END) into OpenFlow | |
1793 | * 1.1 actions in 'openflow', appending the actions to any existing data in | |
1794 | * 'openflow'. */ | |
a07c15bc | 1795 | size_t |
d01c980f BP |
1796 | ofpacts_put_openflow11_actions(const struct ofpact ofpacts[], |
1797 | size_t ofpacts_len, struct ofpbuf *openflow) | |
1798 | { | |
1799 | const struct ofpact *a; | |
a07c15bc | 1800 | size_t start_size = openflow->size; |
d01c980f BP |
1801 | |
1802 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1803 | ofpact_to_openflow11(a, openflow); | |
1804 | } | |
a07c15bc SH |
1805 | |
1806 | return openflow->size - start_size; | |
d01c980f BP |
1807 | } |
1808 | ||
8dd54666 IY |
1809 | static void |
1810 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) | |
d01c980f BP |
1811 | { |
1812 | struct ofp11_instruction_actions *oia; | |
d01c980f BP |
1813 | |
1814 | /* Update the instruction's length (or, if it's empty, delete it). */ | |
1815 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); | |
1816 | if (openflow->size > ofs + sizeof *oia) { | |
1817 | oia->len = htons(openflow->size - ofs); | |
1818 | } else { | |
1819 | openflow->size = ofs; | |
1820 | } | |
1821 | } | |
8dd54666 IY |
1822 | |
1823 | void | |
1824 | ofpacts_put_openflow11_instructions(const struct ofpact ofpacts[], | |
1825 | size_t ofpacts_len, | |
1826 | struct ofpbuf *openflow) | |
1827 | { | |
1828 | const struct ofpact *a; | |
1829 | ||
1830 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
5dca28b5 | 1831 | /* XXX Write-Actions */ |
4cceacb9 | 1832 | |
b19e8793 | 1833 | if (a->type == OFPACT_CLEAR_ACTIONS) { |
f606c7e9 | 1834 | instruction_put_OFPIT11_CLEAR_ACTIONS(openflow); |
b19e8793 | 1835 | } else if (a->type == OFPACT_GOTO_TABLE) { |
8dd54666 IY |
1836 | struct ofp11_instruction_goto_table *oigt; |
1837 | ||
1838 | oigt = instruction_put_OFPIT11_GOTO_TABLE(openflow); | |
1839 | oigt->table_id = ofpact_get_GOTO_TABLE(a)->table_id; | |
1840 | memset(oigt->pad, 0, sizeof oigt->pad); | |
4cceacb9 JS |
1841 | } else if (a->type == OFPACT_WRITE_METADATA) { |
1842 | const struct ofpact_metadata *om; | |
1843 | struct ofp11_instruction_write_metadata *oiwm; | |
1844 | ||
1845 | om = ofpact_get_WRITE_METADATA(a); | |
1846 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(openflow); | |
1847 | oiwm->metadata = om->metadata; | |
1848 | oiwm->metadata_mask = om->mask; | |
8dd54666 IY |
1849 | } else if (!ofpact_is_instruction(a)) { |
1850 | /* Apply-actions */ | |
1851 | const size_t ofs = openflow->size; | |
1852 | const size_t ofpacts_len_left = | |
1853 | (uint8_t*)ofpact_end(ofpacts, ofpacts_len) - (uint8_t*)a; | |
1854 | const struct ofpact *action; | |
1855 | const struct ofpact *processed = a; | |
1856 | ||
1857 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
1858 | OFPACT_FOR_EACH(action, a, ofpacts_len_left) { | |
1859 | if (ofpact_is_instruction(action)) { | |
1860 | break; | |
1861 | } | |
1862 | ofpact_to_openflow11(action, openflow); | |
1863 | processed = action; | |
1864 | } | |
1865 | ofpacts_update_instruction_actions(openflow, ofs); | |
1866 | a = processed; | |
1867 | } | |
1868 | } | |
1869 | } | |
d01c980f | 1870 | \f |
f25d0cf3 BP |
1871 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
1872 | static bool | |
1873 | ofpact_outputs_to_port(const struct ofpact *ofpact, uint16_t port) | |
1874 | { | |
1875 | switch (ofpact->type) { | |
1876 | case OFPACT_OUTPUT: | |
1877 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
1878 | case OFPACT_ENQUEUE: | |
1879 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
1880 | case OFPACT_CONTROLLER: | |
1881 | return port == OFPP_CONTROLLER; | |
1882 | ||
1883 | case OFPACT_OUTPUT_REG: | |
1884 | case OFPACT_BUNDLE: | |
1885 | case OFPACT_SET_VLAN_VID: | |
1886 | case OFPACT_SET_VLAN_PCP: | |
1887 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 1888 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
1889 | case OFPACT_SET_ETH_SRC: |
1890 | case OFPACT_SET_ETH_DST: | |
1891 | case OFPACT_SET_IPV4_SRC: | |
1892 | case OFPACT_SET_IPV4_DST: | |
1893 | case OFPACT_SET_IPV4_DSCP: | |
1894 | case OFPACT_SET_L4_SRC_PORT: | |
1895 | case OFPACT_SET_L4_DST_PORT: | |
1896 | case OFPACT_REG_MOVE: | |
1897 | case OFPACT_REG_LOAD: | |
bd85dac1 AZ |
1898 | case OFPACT_STACK_PUSH: |
1899 | case OFPACT_STACK_POP: | |
f25d0cf3 | 1900 | case OFPACT_DEC_TTL: |
0f3f3c3d | 1901 | case OFPACT_SET_MPLS_TTL: |
b676167a | 1902 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 1903 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 1904 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
1905 | case OFPACT_SET_QUEUE: |
1906 | case OFPACT_POP_QUEUE: | |
1907 | case OFPACT_FIN_TIMEOUT: | |
1908 | case OFPACT_RESUBMIT: | |
1909 | case OFPACT_LEARN: | |
1910 | case OFPACT_MULTIPATH: | |
f25d0cf3 BP |
1911 | case OFPACT_NOTE: |
1912 | case OFPACT_EXIT: | |
b02475c5 SH |
1913 | case OFPACT_PUSH_MPLS: |
1914 | case OFPACT_POP_MPLS: | |
b19e8793 | 1915 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 | 1916 | case OFPACT_GOTO_TABLE: |
f25d0cf3 BP |
1917 | default: |
1918 | return false; | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
1923 | * to 'port', false otherwise. */ | |
1924 | bool | |
1925 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
1926 | uint16_t port) | |
1927 | { | |
1928 | const struct ofpact *a; | |
1929 | ||
1930 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1931 | if (ofpact_outputs_to_port(a, port)) { | |
1932 | return true; | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | return false; | |
1937 | } | |
1938 | ||
1939 | bool | |
1940 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
1941 | const struct ofpact *b, size_t b_len) | |
1942 | { | |
1943 | return a_len == b_len && !memcmp(a, b, a_len); | |
1944 | } | |
1945 | \f | |
1946 | /* Formatting ofpacts. */ | |
1947 | ||
1948 | static void | |
1949 | print_note(const struct ofpact_note *note, struct ds *string) | |
1950 | { | |
1951 | size_t i; | |
1952 | ||
1953 | ds_put_cstr(string, "note:"); | |
1954 | for (i = 0; i < note->length; i++) { | |
1955 | if (i) { | |
1956 | ds_put_char(string, '.'); | |
1957 | } | |
1958 | ds_put_format(string, "%02"PRIx8, note->data[i]); | |
1959 | } | |
1960 | } | |
1961 | ||
c2d967a5 MM |
1962 | static void |
1963 | print_dec_ttl(const struct ofpact_cnt_ids *ids, | |
1964 | struct ds *s) | |
1965 | { | |
1966 | size_t i; | |
1967 | ||
1968 | ds_put_cstr(s, "dec_ttl"); | |
1969 | if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) { | |
1970 | ds_put_cstr(s, "("); | |
1971 | for (i = 0; i < ids->n_controllers; i++) { | |
1972 | if (i) { | |
1973 | ds_put_cstr(s, ","); | |
1974 | } | |
1975 | ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]); | |
1976 | } | |
1977 | ds_put_cstr(s, ")"); | |
1978 | } | |
1979 | } | |
1980 | ||
f25d0cf3 BP |
1981 | static void |
1982 | print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout, | |
1983 | struct ds *s) | |
1984 | { | |
1985 | ds_put_cstr(s, "fin_timeout("); | |
1986 | if (fin_timeout->fin_idle_timeout) { | |
1987 | ds_put_format(s, "idle_timeout=%"PRIu16",", | |
1988 | fin_timeout->fin_idle_timeout); | |
1989 | } | |
1990 | if (fin_timeout->fin_hard_timeout) { | |
1991 | ds_put_format(s, "hard_timeout=%"PRIu16",", | |
1992 | fin_timeout->fin_hard_timeout); | |
1993 | } | |
1994 | ds_chomp(s, ','); | |
1995 | ds_put_char(s, ')'); | |
1996 | } | |
1997 | ||
1998 | static void | |
1999 | ofpact_format(const struct ofpact *a, struct ds *s) | |
2000 | { | |
2001 | const struct ofpact_enqueue *enqueue; | |
2002 | const struct ofpact_resubmit *resubmit; | |
f25d0cf3 | 2003 | const struct ofpact_controller *controller; |
4cceacb9 | 2004 | const struct ofpact_metadata *metadata; |
f25d0cf3 BP |
2005 | const struct ofpact_tunnel *tunnel; |
2006 | uint16_t port; | |
2007 | ||
2008 | switch (a->type) { | |
2009 | case OFPACT_OUTPUT: | |
2010 | port = ofpact_get_OUTPUT(a)->port; | |
2011 | if (port < OFPP_MAX) { | |
2012 | ds_put_format(s, "output:%"PRIu16, port); | |
2013 | } else { | |
2014 | ofputil_format_port(port, s); | |
2015 | if (port == OFPP_CONTROLLER) { | |
2016 | ds_put_format(s, ":%"PRIu16, ofpact_get_OUTPUT(a)->max_len); | |
2017 | } | |
2018 | } | |
2019 | break; | |
2020 | ||
2021 | case OFPACT_CONTROLLER: | |
2022 | controller = ofpact_get_CONTROLLER(a); | |
2023 | if (controller->reason == OFPR_ACTION && | |
2024 | controller->controller_id == 0) { | |
2025 | ds_put_format(s, "CONTROLLER:%"PRIu16, | |
2026 | ofpact_get_CONTROLLER(a)->max_len); | |
2027 | } else { | |
2028 | enum ofp_packet_in_reason reason = controller->reason; | |
2029 | ||
2030 | ds_put_cstr(s, "controller("); | |
2031 | if (reason != OFPR_ACTION) { | |
2032 | ds_put_format(s, "reason=%s,", | |
2033 | ofputil_packet_in_reason_to_string(reason)); | |
2034 | } | |
2035 | if (controller->max_len != UINT16_MAX) { | |
2036 | ds_put_format(s, "max_len=%"PRIu16",", controller->max_len); | |
2037 | } | |
2038 | if (controller->controller_id != 0) { | |
2039 | ds_put_format(s, "id=%"PRIu16",", controller->controller_id); | |
2040 | } | |
2041 | ds_chomp(s, ','); | |
2042 | ds_put_char(s, ')'); | |
2043 | } | |
2044 | break; | |
2045 | ||
2046 | case OFPACT_ENQUEUE: | |
2047 | enqueue = ofpact_get_ENQUEUE(a); | |
2048 | ds_put_format(s, "enqueue:"); | |
2049 | ofputil_format_port(enqueue->port, s); | |
2050 | ds_put_format(s, "q%"PRIu32, enqueue->queue); | |
2051 | break; | |
2052 | ||
2053 | case OFPACT_OUTPUT_REG: | |
2054 | ds_put_cstr(s, "output:"); | |
2055 | mf_format_subfield(&ofpact_get_OUTPUT_REG(a)->src, s); | |
2056 | break; | |
2057 | ||
2058 | case OFPACT_BUNDLE: | |
2059 | bundle_format(ofpact_get_BUNDLE(a), s); | |
2060 | break; | |
2061 | ||
2062 | case OFPACT_SET_VLAN_VID: | |
2063 | ds_put_format(s, "mod_vlan_vid:%"PRIu16, | |
2064 | ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
2065 | break; | |
2066 | ||
2067 | case OFPACT_SET_VLAN_PCP: | |
2068 | ds_put_format(s, "mod_vlan_pcp:%"PRIu8, | |
2069 | ofpact_get_SET_VLAN_PCP(a)->vlan_pcp); | |
2070 | break; | |
2071 | ||
2072 | case OFPACT_STRIP_VLAN: | |
2073 | ds_put_cstr(s, "strip_vlan"); | |
2074 | break; | |
2075 | ||
3e34fbdd | 2076 | case OFPACT_PUSH_VLAN: |
5dca28b5 | 2077 | /* XXX 802.1AD case*/ |
3e34fbdd IY |
2078 | ds_put_format(s, "push_vlan:%#"PRIx16, ETH_TYPE_VLAN_8021Q); |
2079 | break; | |
2080 | ||
f25d0cf3 BP |
2081 | case OFPACT_SET_ETH_SRC: |
2082 | ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT, | |
2083 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_SRC(a)->mac)); | |
2084 | break; | |
2085 | ||
2086 | case OFPACT_SET_ETH_DST: | |
2087 | ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT, | |
2088 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_DST(a)->mac)); | |
2089 | break; | |
2090 | ||
2091 | case OFPACT_SET_IPV4_SRC: | |
2092 | ds_put_format(s, "mod_nw_src:"IP_FMT, | |
ed36537e | 2093 | IP_ARGS(ofpact_get_SET_IPV4_SRC(a)->ipv4)); |
f25d0cf3 BP |
2094 | break; |
2095 | ||
2096 | case OFPACT_SET_IPV4_DST: | |
2097 | ds_put_format(s, "mod_nw_dst:"IP_FMT, | |
ed36537e | 2098 | IP_ARGS(ofpact_get_SET_IPV4_DST(a)->ipv4)); |
f25d0cf3 BP |
2099 | break; |
2100 | ||
2101 | case OFPACT_SET_IPV4_DSCP: | |
2102 | ds_put_format(s, "mod_nw_tos:%d", ofpact_get_SET_IPV4_DSCP(a)->dscp); | |
2103 | break; | |
2104 | ||
2105 | case OFPACT_SET_L4_SRC_PORT: | |
2106 | ds_put_format(s, "mod_tp_src:%d", ofpact_get_SET_L4_SRC_PORT(a)->port); | |
2107 | break; | |
2108 | ||
2109 | case OFPACT_SET_L4_DST_PORT: | |
2110 | ds_put_format(s, "mod_tp_dst:%d", ofpact_get_SET_L4_DST_PORT(a)->port); | |
2111 | break; | |
2112 | ||
2113 | case OFPACT_REG_MOVE: | |
2114 | nxm_format_reg_move(ofpact_get_REG_MOVE(a), s); | |
2115 | break; | |
2116 | ||
2117 | case OFPACT_REG_LOAD: | |
2118 | nxm_format_reg_load(ofpact_get_REG_LOAD(a), s); | |
2119 | break; | |
2120 | ||
bd85dac1 AZ |
2121 | case OFPACT_STACK_PUSH: |
2122 | nxm_format_stack_push(ofpact_get_STACK_PUSH(a), s); | |
2123 | break; | |
2124 | ||
2125 | case OFPACT_STACK_POP: | |
2126 | nxm_format_stack_pop(ofpact_get_STACK_POP(a), s); | |
2127 | break; | |
2128 | ||
f25d0cf3 | 2129 | case OFPACT_DEC_TTL: |
c2d967a5 | 2130 | print_dec_ttl(ofpact_get_DEC_TTL(a), s); |
f25d0cf3 BP |
2131 | break; |
2132 | ||
0f3f3c3d SH |
2133 | case OFPACT_SET_MPLS_TTL: |
2134 | ds_put_format(s, "set_mpls_ttl(%"PRIu8")", | |
2135 | ofpact_get_SET_MPLS_TTL(a)->ttl); | |
2136 | break; | |
2137 | ||
b676167a SH |
2138 | case OFPACT_DEC_MPLS_TTL: |
2139 | ds_put_cstr(s, "dec_mpls_ttl"); | |
2140 | break; | |
2141 | ||
f25d0cf3 BP |
2142 | case OFPACT_SET_TUNNEL: |
2143 | tunnel = ofpact_get_SET_TUNNEL(a); | |
2144 | ds_put_format(s, "set_tunnel%s:%#"PRIx64, | |
2145 | (tunnel->tun_id > UINT32_MAX | |
2146 | || a->compat == OFPUTIL_NXAST_SET_TUNNEL64 ? "64" : ""), | |
2147 | tunnel->tun_id); | |
2148 | break; | |
2149 | ||
2150 | case OFPACT_SET_QUEUE: | |
2151 | ds_put_format(s, "set_queue:%"PRIu32, | |
2152 | ofpact_get_SET_QUEUE(a)->queue_id); | |
2153 | break; | |
2154 | ||
2155 | case OFPACT_POP_QUEUE: | |
2156 | ds_put_cstr(s, "pop_queue"); | |
2157 | break; | |
2158 | ||
2159 | case OFPACT_FIN_TIMEOUT: | |
2160 | print_fin_timeout(ofpact_get_FIN_TIMEOUT(a), s); | |
2161 | break; | |
2162 | ||
2163 | case OFPACT_RESUBMIT: | |
2164 | resubmit = ofpact_get_RESUBMIT(a); | |
2165 | if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) { | |
c6100d92 BP |
2166 | ds_put_cstr(s, "resubmit:"); |
2167 | ofputil_format_port(resubmit->in_port, s); | |
f25d0cf3 BP |
2168 | } else { |
2169 | ds_put_format(s, "resubmit("); | |
2170 | if (resubmit->in_port != OFPP_IN_PORT) { | |
2171 | ofputil_format_port(resubmit->in_port, s); | |
2172 | } | |
2173 | ds_put_char(s, ','); | |
2174 | if (resubmit->table_id != 255) { | |
2175 | ds_put_format(s, "%"PRIu8, resubmit->table_id); | |
2176 | } | |
2177 | ds_put_char(s, ')'); | |
2178 | } | |
2179 | break; | |
2180 | ||
2181 | case OFPACT_LEARN: | |
2182 | learn_format(ofpact_get_LEARN(a), s); | |
2183 | break; | |
2184 | ||
2185 | case OFPACT_MULTIPATH: | |
2186 | multipath_format(ofpact_get_MULTIPATH(a), s); | |
2187 | break; | |
2188 | ||
f25d0cf3 BP |
2189 | case OFPACT_NOTE: |
2190 | print_note(ofpact_get_NOTE(a), s); | |
2191 | break; | |
2192 | ||
b02475c5 SH |
2193 | case OFPACT_PUSH_MPLS: |
2194 | ds_put_format(s, "push_mpls:0x%04"PRIx16, | |
2195 | ntohs(ofpact_get_PUSH_MPLS(a)->ethertype)); | |
2196 | break; | |
2197 | ||
2198 | case OFPACT_POP_MPLS: | |
2199 | ds_put_format(s, "pop_mpls:0x%04"PRIx16, | |
2200 | ntohs(ofpact_get_POP_MPLS(a)->ethertype)); | |
2201 | break; | |
2202 | ||
f25d0cf3 BP |
2203 | case OFPACT_EXIT: |
2204 | ds_put_cstr(s, "exit"); | |
2205 | break; | |
8dd54666 | 2206 | |
b19e8793 IY |
2207 | case OFPACT_CLEAR_ACTIONS: |
2208 | ds_put_format(s, "%s", | |
2209 | ofpact_instruction_name_from_type( | |
2210 | OVSINST_OFPIT11_CLEAR_ACTIONS)); | |
2211 | break; | |
2212 | ||
4cceacb9 JS |
2213 | case OFPACT_WRITE_METADATA: |
2214 | metadata = ofpact_get_WRITE_METADATA(a); | |
2215 | ds_put_format(s, "%s:%#"PRIx64, | |
2216 | ofpact_instruction_name_from_type( | |
2217 | OVSINST_OFPIT11_WRITE_METADATA), | |
2218 | ntohll(metadata->metadata)); | |
2219 | if (metadata->mask != htonll(UINT64_MAX)) { | |
2220 | ds_put_format(s, "/%#"PRIx64, ntohll(metadata->mask)); | |
2221 | } | |
2222 | break; | |
2223 | ||
8dd54666 IY |
2224 | case OFPACT_GOTO_TABLE: |
2225 | ds_put_format(s, "%s:%"PRIu8, | |
2226 | ofpact_instruction_name_from_type( | |
2227 | OVSINST_OFPIT11_GOTO_TABLE), | |
2228 | ofpact_get_GOTO_TABLE(a)->table_id); | |
2229 | break; | |
f25d0cf3 BP |
2230 | } |
2231 | } | |
2232 | ||
2233 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
2234 | * 'ofpacts' to 'string'. */ | |
2235 | void | |
2236 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
2237 | struct ds *string) | |
2238 | { | |
2239 | ds_put_cstr(string, "actions="); | |
2240 | if (!ofpacts_len) { | |
2241 | ds_put_cstr(string, "drop"); | |
2242 | } else { | |
2243 | const struct ofpact *a; | |
2244 | ||
2245 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
2246 | if (a != ofpacts) { | |
2247 | ds_put_cstr(string, ","); | |
2248 | } | |
8dd54666 | 2249 | |
5dca28b5 | 2250 | /* XXX write-actions */ |
f25d0cf3 BP |
2251 | ofpact_format(a, string); |
2252 | } | |
2253 | } | |
2254 | } | |
2255 | \f | |
2256 | /* Internal use by helpers. */ | |
2257 | ||
2258 | void * | |
2259 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
2260 | { | |
2261 | struct ofpact *ofpact; | |
2262 | ||
2263 | ofpact_pad(ofpacts); | |
2264 | ofpact = ofpacts->l2 = ofpbuf_put_uninit(ofpacts, len); | |
2265 | ofpact_init(ofpact, type, len); | |
2266 | return ofpact; | |
2267 | } | |
2268 | ||
2269 | void | |
2270 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
2271 | { | |
2272 | memset(ofpact, 0, len); | |
2273 | ofpact->type = type; | |
2274 | ofpact->compat = OFPUTIL_ACTION_INVALID; | |
2275 | ofpact->len = len; | |
2276 | } | |
2277 | \f | |
2278 | /* Updates 'ofpact->len' to the number of bytes in the tail of 'ofpacts' | |
2279 | * starting at 'ofpact'. | |
2280 | * | |
2281 | * This is the correct way to update a variable-length ofpact's length after | |
2282 | * adding the variable-length part of the payload. (See the large comment | |
2283 | * near the end of ofp-actions.h for more information.) */ | |
2284 | void | |
2285 | ofpact_update_len(struct ofpbuf *ofpacts, struct ofpact *ofpact) | |
2286 | { | |
cb22974d | 2287 | ovs_assert(ofpact == ofpacts->l2); |
f25d0cf3 BP |
2288 | ofpact->len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
2289 | } | |
2290 | ||
2291 | /* Pads out 'ofpacts' to a multiple of OFPACT_ALIGNTO bytes in length. Each | |
2292 | * ofpact_put_<ENUM>() calls this function automatically beforehand, but the | |
2293 | * client must call this itself after adding the final ofpact to an array of | |
2294 | * them. | |
2295 | * | |
2296 | * (The consequences of failing to call this function are probably not dire. | |
2297 | * OFPACT_FOR_EACH will calculate a pointer beyond the end of the ofpacts, but | |
2298 | * not dereference it. That's undefined behavior, technically, but it will not | |
2299 | * cause a real problem on common systems. Still, it seems better to call | |
2300 | * it.) */ | |
2301 | void | |
2302 | ofpact_pad(struct ofpbuf *ofpacts) | |
2303 | { | |
2304 | unsigned int rem = ofpacts->size % OFPACT_ALIGNTO; | |
2305 | if (rem) { | |
2306 | ofpbuf_put_zeros(ofpacts, OFPACT_ALIGNTO - rem); | |
2307 | } | |
2308 | } | |
f5c45121 SH |
2309 | |
2310 | void | |
2311 | ofpact_set_field_init(struct ofpact_reg_load *load, const struct mf_field *mf, | |
2312 | const void *src) | |
2313 | { | |
2314 | load->ofpact.compat = OFPUTIL_OFPAT12_SET_FIELD; | |
2315 | load->dst.field = mf; | |
2316 | load->dst.ofs = 0; | |
2317 | load->dst.n_bits = mf->n_bits; | |
2318 | bitwise_copy(src, mf->n_bytes, load->dst.ofs, | |
2319 | &load->subvalue, sizeof load->subvalue, 0, mf->n_bits); | |
2320 | } |