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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 | ||
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 | ||
342 | case OFPUTIL_NXAST_NOTE: | |
343 | nan = (const struct nx_action_note *) a; | |
344 | note_from_openflow(nan, out); | |
345 | break; | |
346 | ||
347 | case OFPUTIL_NXAST_SET_TUNNEL64: | |
348 | nast64 = (const struct nx_action_set_tunnel64 *) a; | |
349 | tunnel = ofpact_put_SET_TUNNEL(out); | |
350 | tunnel->ofpact.compat = code; | |
351 | tunnel->tun_id = ntohll(nast64->tun_id); | |
352 | break; | |
353 | ||
354 | case OFPUTIL_NXAST_MULTIPATH: | |
355 | error = multipath_from_openflow((const struct nx_action_multipath *) a, | |
356 | ofpact_put_MULTIPATH(out)); | |
357 | break; | |
358 | ||
c51c638a | 359 | case OFPUTIL_NXAST_AUTOPATH__DEPRECATED: |
f25d0cf3 BP |
360 | error = autopath_from_openflow((const struct nx_action_autopath *) a, |
361 | ofpact_put_AUTOPATH(out)); | |
362 | break; | |
363 | ||
364 | case OFPUTIL_NXAST_BUNDLE: | |
365 | case OFPUTIL_NXAST_BUNDLE_LOAD: | |
366 | error = bundle_from_openflow((const struct nx_action_bundle *) a, out); | |
367 | break; | |
368 | ||
369 | case OFPUTIL_NXAST_OUTPUT_REG: | |
370 | error = output_reg_from_openflow( | |
371 | (const struct nx_action_output_reg *) a, out); | |
372 | break; | |
373 | ||
374 | case OFPUTIL_NXAST_RESUBMIT_TABLE: | |
375 | nar = (const struct nx_action_resubmit *) a; | |
376 | error = resubmit_table_from_openflow(nar, out); | |
377 | break; | |
378 | ||
379 | case OFPUTIL_NXAST_LEARN: | |
380 | error = learn_from_openflow((const struct nx_action_learn *) a, out); | |
381 | break; | |
382 | ||
383 | case OFPUTIL_NXAST_EXIT: | |
384 | ofpact_put_EXIT(out); | |
385 | break; | |
386 | ||
387 | case OFPUTIL_NXAST_DEC_TTL: | |
7bcb1506 | 388 | error = dec_ttl_from_openflow(out, code); |
c2d967a5 MM |
389 | break; |
390 | ||
391 | case OFPUTIL_NXAST_DEC_TTL_CNT_IDS: | |
392 | error = dec_ttl_cnt_ids_from_openflow( | |
393 | (const struct nx_action_cnt_ids *) a, out); | |
f25d0cf3 BP |
394 | break; |
395 | ||
396 | case OFPUTIL_NXAST_FIN_TIMEOUT: | |
397 | fin_timeout_from_openflow( | |
398 | (const struct nx_action_fin_timeout *) a, out); | |
399 | break; | |
400 | ||
401 | case OFPUTIL_NXAST_CONTROLLER: | |
402 | controller_from_openflow((const struct nx_action_controller *) a, out); | |
403 | break; | |
404 | } | |
405 | ||
406 | return error; | |
407 | } | |
408 | ||
d01c980f BP |
409 | static enum ofperr |
410 | ofpact_from_openflow10(const union ofp_action *a, struct ofpbuf *out) | |
411 | { | |
412 | enum ofputil_action_code code; | |
413 | enum ofperr error; | |
414 | ||
415 | error = decode_openflow10_action(a, &code); | |
416 | if (error) { | |
417 | return error; | |
418 | } | |
419 | ||
420 | switch (code) { | |
421 | case OFPUTIL_ACTION_INVALID: | |
3ddcaf2d | 422 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f BP |
423 | #include "ofp-util.def" |
424 | NOT_REACHED(); | |
425 | ||
426 | case OFPUTIL_OFPAT10_OUTPUT: | |
427 | return output_from_openflow10(&a->output10, out); | |
428 | ||
429 | case OFPUTIL_OFPAT10_SET_VLAN_VID: | |
430 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
431 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
432 | } | |
433 | ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
434 | break; | |
435 | ||
436 | case OFPUTIL_OFPAT10_SET_VLAN_PCP: | |
437 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
438 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
439 | } | |
440 | ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
441 | break; | |
442 | ||
443 | case OFPUTIL_OFPAT10_STRIP_VLAN: | |
444 | ofpact_put_STRIP_VLAN(out); | |
445 | break; | |
446 | ||
447 | case OFPUTIL_OFPAT10_SET_DL_SRC: | |
448 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, | |
449 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
450 | break; | |
451 | ||
452 | case OFPUTIL_OFPAT10_SET_DL_DST: | |
453 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, | |
454 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
455 | break; | |
456 | ||
457 | case OFPUTIL_OFPAT10_SET_NW_SRC: | |
458 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
459 | break; | |
460 | ||
461 | case OFPUTIL_OFPAT10_SET_NW_DST: | |
462 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
463 | break; | |
464 | ||
465 | case OFPUTIL_OFPAT10_SET_NW_TOS: | |
466 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
467 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
468 | } | |
469 | ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos; | |
470 | break; | |
471 | ||
472 | case OFPUTIL_OFPAT10_SET_TP_SRC: | |
473 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
474 | break; | |
475 | ||
476 | case OFPUTIL_OFPAT10_SET_TP_DST: | |
477 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
478 | ||
479 | break; | |
480 | ||
481 | case OFPUTIL_OFPAT10_ENQUEUE: | |
482 | error = enqueue_from_openflow10((const struct ofp_action_enqueue *) a, | |
483 | out); | |
484 | break; | |
485 | ||
486 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: | |
487 | #include "ofp-util.def" | |
488 | return ofpact_from_nxast(a, code, out); | |
489 | } | |
490 | ||
491 | return error; | |
492 | } | |
493 | ||
f25d0cf3 BP |
494 | static inline union ofp_action * |
495 | action_next(const union ofp_action *a) | |
496 | { | |
497 | return ((union ofp_action *) (void *) | |
498 | ((uint8_t *) a + ntohs(a->header.len))); | |
499 | } | |
500 | ||
501 | static inline bool | |
502 | action_is_valid(const union ofp_action *a, size_t n_actions) | |
503 | { | |
504 | uint16_t len = ntohs(a->header.len); | |
505 | return (!(len % OFP_ACTION_ALIGN) | |
506 | && len >= sizeof *a | |
507 | && len / sizeof *a <= n_actions); | |
508 | } | |
509 | ||
510 | /* This macro is careful to check for actions with bad lengths. */ | |
511 | #define ACTION_FOR_EACH(ITER, LEFT, ACTIONS, N_ACTIONS) \ | |
512 | for ((ITER) = (ACTIONS), (LEFT) = (N_ACTIONS); \ | |
513 | (LEFT) > 0 && action_is_valid(ITER, LEFT); \ | |
514 | ((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \ | |
515 | (ITER) = action_next(ITER))) | |
516 | ||
699dddf1 BP |
517 | static void |
518 | log_bad_action(const union ofp_action *actions, size_t n_actions, size_t ofs, | |
519 | enum ofperr error) | |
520 | { | |
521 | if (!VLOG_DROP_WARN(&rl)) { | |
522 | struct ds s; | |
523 | ||
524 | ds_init(&s); | |
525 | ds_put_hex_dump(&s, actions, n_actions * sizeof *actions, 0, false); | |
526 | VLOG_WARN("bad action at offset %#zx (%s):\n%s", | |
527 | ofs * sizeof *actions, ofperr_get_name(error), ds_cstr(&s)); | |
528 | ds_destroy(&s); | |
529 | } | |
530 | } | |
531 | ||
f25d0cf3 | 532 | static enum ofperr |
0300caaf IY |
533 | ofpacts_from_openflow(const union ofp_action *in, size_t n_in, |
534 | struct ofpbuf *out, | |
535 | enum ofperr (*ofpact_from_openflow)( | |
536 | const union ofp_action *a, struct ofpbuf *out)) | |
f25d0cf3 BP |
537 | { |
538 | const union ofp_action *a; | |
539 | size_t left; | |
540 | ||
541 | ACTION_FOR_EACH (a, left, in, n_in) { | |
0300caaf | 542 | enum ofperr error = ofpact_from_openflow(a, out); |
f25d0cf3 | 543 | if (error) { |
699dddf1 | 544 | log_bad_action(in, n_in, a - in, error); |
f25d0cf3 BP |
545 | return error; |
546 | } | |
547 | } | |
548 | if (left) { | |
699dddf1 BP |
549 | enum ofperr error = OFPERR_OFPBAC_BAD_LEN; |
550 | log_bad_action(in, n_in, n_in - left, error); | |
551 | return error; | |
f25d0cf3 BP |
552 | } |
553 | ||
554 | ofpact_pad(out); | |
555 | return 0; | |
556 | } | |
557 | ||
0300caaf IY |
558 | static enum ofperr |
559 | ofpacts_from_openflow10(const union ofp_action *in, size_t n_in, | |
560 | struct ofpbuf *out) | |
561 | { | |
562 | return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow10); | |
563 | } | |
564 | ||
d01c980f BP |
565 | static enum ofperr |
566 | ofpacts_pull_actions(struct ofpbuf *openflow, unsigned int actions_len, | |
567 | struct ofpbuf *ofpacts, | |
568 | enum ofperr (*translate)(const union ofp_action *actions, | |
569 | size_t n_actions, | |
570 | struct ofpbuf *ofpacts)) | |
f25d0cf3 BP |
571 | { |
572 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
573 | const union ofp_action *actions; | |
574 | enum ofperr error; | |
575 | ||
576 | ofpbuf_clear(ofpacts); | |
577 | ||
578 | if (actions_len % OFP_ACTION_ALIGN != 0) { | |
579 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
580 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
581 | return OFPERR_OFPBRC_BAD_LEN; | |
582 | } | |
583 | ||
584 | actions = ofpbuf_try_pull(openflow, actions_len); | |
585 | if (actions == NULL) { | |
586 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
587 | "remaining message length (%zu)", | |
588 | actions_len, openflow->size); | |
589 | return OFPERR_OFPBRC_BAD_LEN; | |
590 | } | |
591 | ||
d01c980f | 592 | error = translate(actions, actions_len / OFP_ACTION_ALIGN, ofpacts); |
4cceacb9 JS |
593 | if (error) { |
594 | ofpbuf_clear(ofpacts); | |
595 | return error; | |
596 | } | |
597 | ||
598 | error = ofpacts_verify(ofpacts->data, ofpacts->size); | |
f25d0cf3 BP |
599 | if (error) { |
600 | ofpbuf_clear(ofpacts); | |
601 | } | |
d01c980f BP |
602 | return error; |
603 | } | |
604 | ||
605 | /* Attempts to convert 'actions_len' bytes of OpenFlow 1.0 actions from the | |
606 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
607 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
608 | * Returns 0 if successful, otherwise an OpenFlow error. | |
609 | * | |
13f894b1 BP |
610 | * The parsed actions are valid generically, but they may not be valid in a |
611 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
612 | * generically, but specific datapaths may only support port numbers in a | |
613 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
614 | * valid in a specific context. */ | |
d01c980f BP |
615 | enum ofperr |
616 | ofpacts_pull_openflow10(struct ofpbuf *openflow, unsigned int actions_len, | |
617 | struct ofpbuf *ofpacts) | |
618 | { | |
619 | return ofpacts_pull_actions(openflow, actions_len, ofpacts, | |
620 | ofpacts_from_openflow10); | |
621 | } | |
622 | \f | |
623 | /* OpenFlow 1.1 actions. */ | |
624 | ||
625 | /* Parses 'a' to determine its type. On success stores the correct type into | |
626 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
627 | * '*code' is indeterminate. | |
628 | * | |
629 | * The caller must have already verified that 'a''s length is potentially | |
630 | * correct (that is, a->header.len is nonzero and a multiple of sizeof(union | |
631 | * ofp_action) and no longer than the amount of space allocated to 'a'). | |
632 | * | |
633 | * This function verifies that 'a''s length is correct for the type of action | |
634 | * that it represents. */ | |
635 | static enum ofperr | |
636 | decode_openflow11_action(const union ofp_action *a, | |
637 | enum ofputil_action_code *code) | |
638 | { | |
3ddcaf2d BP |
639 | uint16_t len; |
640 | ||
d01c980f BP |
641 | switch (a->type) { |
642 | case CONSTANT_HTONS(OFPAT11_EXPERIMENTER): | |
643 | return decode_nxast_action(a, code); | |
644 | ||
3ddcaf2d BP |
645 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
646 | case CONSTANT_HTONS(ENUM): \ | |
647 | len = ntohs(a->header.len); \ | |
648 | if (EXTENSIBLE \ | |
649 | ? len >= sizeof(struct STRUCT) \ | |
650 | : len == sizeof(struct STRUCT)) { \ | |
651 | *code = OFPUTIL_##ENUM; \ | |
652 | return 0; \ | |
653 | } else { \ | |
654 | return OFPERR_OFPBAC_BAD_LEN; \ | |
655 | } \ | |
656 | NOT_REACHED(); | |
d01c980f BP |
657 | #include "ofp-util.def" |
658 | ||
659 | default: | |
660 | return OFPERR_OFPBAC_BAD_TYPE; | |
661 | } | |
662 | } | |
663 | ||
664 | static enum ofperr | |
665 | output_from_openflow11(const struct ofp11_action_output *oao, | |
666 | struct ofpbuf *out) | |
667 | { | |
668 | struct ofpact_output *output; | |
669 | enum ofperr error; | |
670 | ||
671 | output = ofpact_put_OUTPUT(out); | |
672 | output->max_len = ntohs(oao->max_len); | |
673 | ||
674 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
675 | if (error) { | |
676 | return error; | |
677 | } | |
678 | ||
679 | return ofputil_check_output_port(output->port, OFPP_MAX); | |
680 | } | |
681 | ||
682 | static enum ofperr | |
683 | ofpact_from_openflow11(const union ofp_action *a, struct ofpbuf *out) | |
684 | { | |
685 | enum ofputil_action_code code; | |
686 | enum ofperr error; | |
687 | ||
688 | error = decode_openflow11_action(a, &code); | |
689 | if (error) { | |
690 | return error; | |
691 | } | |
692 | ||
693 | switch (code) { | |
694 | case OFPUTIL_ACTION_INVALID: | |
695 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: | |
696 | #include "ofp-util.def" | |
697 | NOT_REACHED(); | |
698 | ||
699 | case OFPUTIL_OFPAT11_OUTPUT: | |
700 | return output_from_openflow11((const struct ofp11_action_output *) a, | |
701 | out); | |
702 | ||
703 | case OFPUTIL_OFPAT11_SET_VLAN_VID: | |
704 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
705 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
706 | } | |
707 | ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
708 | break; | |
709 | ||
710 | case OFPUTIL_OFPAT11_SET_VLAN_PCP: | |
711 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
712 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
713 | } | |
714 | ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
715 | break; | |
716 | ||
8e61c110 IY |
717 | case OFPUTIL_OFPAT11_POP_VLAN: |
718 | ofpact_put_STRIP_VLAN(out); | |
719 | break; | |
720 | ||
d01c980f BP |
721 | case OFPUTIL_OFPAT11_SET_DL_SRC: |
722 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, | |
723 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
724 | break; | |
725 | ||
726 | case OFPUTIL_OFPAT11_SET_DL_DST: | |
727 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, | |
728 | ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN); | |
729 | break; | |
730 | ||
7bcb1506 IY |
731 | case OFPUTIL_OFPAT11_DEC_NW_TTL: |
732 | dec_ttl_from_openflow(out, code); | |
733 | break; | |
734 | ||
d01c980f BP |
735 | case OFPUTIL_OFPAT11_SET_NW_SRC: |
736 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
737 | break; | |
738 | ||
739 | case OFPUTIL_OFPAT11_SET_NW_DST: | |
740 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
741 | break; | |
742 | ||
743 | case OFPUTIL_OFPAT11_SET_NW_TOS: | |
744 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
745 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
746 | } | |
747 | ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos; | |
748 | break; | |
749 | ||
750 | case OFPUTIL_OFPAT11_SET_TP_SRC: | |
751 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
752 | break; | |
753 | ||
754 | case OFPUTIL_OFPAT11_SET_TP_DST: | |
755 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
756 | break; | |
757 | ||
e9536ecb | 758 | case OFPUTIL_OFPAT12_SET_FIELD: |
d55b18c8 IY |
759 | return nxm_reg_load_from_openflow12_set_field( |
760 | (const struct ofp12_action_set_field *)a, out); | |
e9536ecb | 761 | |
d01c980f BP |
762 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
763 | #include "ofp-util.def" | |
764 | return ofpact_from_nxast(a, code, out); | |
765 | } | |
766 | ||
767 | return error; | |
768 | } | |
769 | ||
770 | static enum ofperr | |
771 | ofpacts_from_openflow11(const union ofp_action *in, size_t n_in, | |
772 | struct ofpbuf *out) | |
773 | { | |
0300caaf | 774 | return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow11); |
f25d0cf3 BP |
775 | } |
776 | \f | |
d01c980f BP |
777 | /* OpenFlow 1.1 instructions. */ |
778 | ||
d01c980f | 779 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
a359d5ad IY |
780 | static inline const struct STRUCT * \ |
781 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
782 | { \ | |
783 | assert(inst->type == htons(ENUM)); \ | |
784 | return (struct STRUCT *)inst; \ | |
785 | } \ | |
786 | \ | |
d01c980f BP |
787 | static inline void \ |
788 | instruction_init_##ENUM(struct STRUCT *s) \ | |
789 | { \ | |
790 | memset(s, 0, sizeof *s); \ | |
791 | s->type = htons(ENUM); \ | |
792 | s->len = htons(sizeof *s); \ | |
793 | } \ | |
794 | \ | |
795 | static inline struct STRUCT * \ | |
796 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
797 | { \ | |
798 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
799 | instruction_init_##ENUM(s); \ | |
800 | return s; \ | |
801 | } | |
802 | OVS_INSTRUCTIONS | |
803 | #undef DEFINE_INST | |
804 | ||
a359d5ad IY |
805 | struct instruction_type_info { |
806 | enum ovs_instruction_type type; | |
807 | const char *name; | |
808 | }; | |
809 | ||
810 | static const struct instruction_type_info inst_info[] = { | |
811 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
812 | OVS_INSTRUCTIONS | |
813 | #undef DEFINE_INST | |
814 | }; | |
815 | ||
816 | const char * | |
817 | ofpact_instruction_name_from_type(enum ovs_instruction_type type) | |
818 | { | |
6ae0fd54 | 819 | return inst_info[type].name; |
a359d5ad IY |
820 | } |
821 | ||
822 | int | |
823 | ofpact_instruction_type_from_name(const char *name) | |
824 | { | |
825 | const struct instruction_type_info *p; | |
826 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
827 | if (!strcasecmp(name, p->name)) { | |
828 | return p->type; | |
829 | } | |
830 | } | |
831 | return -1; | |
832 | } | |
833 | ||
d01c980f BP |
834 | static inline struct ofp11_instruction * |
835 | instruction_next(const struct ofp11_instruction *inst) | |
836 | { | |
837 | return ((struct ofp11_instruction *) (void *) | |
838 | ((uint8_t *) inst + ntohs(inst->len))); | |
839 | } | |
840 | ||
841 | static inline bool | |
842 | instruction_is_valid(const struct ofp11_instruction *inst, | |
843 | size_t n_instructions) | |
844 | { | |
845 | uint16_t len = ntohs(inst->len); | |
846 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
847 | && len >= sizeof *inst | |
848 | && len / sizeof *inst <= n_instructions); | |
849 | } | |
850 | ||
851 | /* This macro is careful to check for instructions with bad lengths. */ | |
852 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
853 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
854 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
855 | ((LEFT) -= (ntohs((ITER)->len) \ | |
856 | / sizeof(struct ofp11_instruction)), \ | |
857 | (ITER) = instruction_next(ITER))) | |
858 | ||
859 | static enum ofperr | |
860 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
861 | enum ovs_instruction_type *type) | |
862 | { | |
863 | uint16_t len = ntohs(inst->len); | |
864 | ||
865 | switch (inst->type) { | |
866 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
867 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
868 | ||
869 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
870 | case CONSTANT_HTONS(ENUM): \ | |
871 | if (EXTENSIBLE \ | |
872 | ? len >= sizeof(struct STRUCT) \ | |
873 | : len == sizeof(struct STRUCT)) { \ | |
874 | *type = OVSINST_##ENUM; \ | |
875 | return 0; \ | |
876 | } else { \ | |
877 | return OFPERR_OFPBIC_BAD_LEN; \ | |
878 | } | |
879 | OVS_INSTRUCTIONS | |
880 | #undef DEFINE_INST | |
881 | ||
882 | default: | |
883 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
884 | } | |
885 | } | |
886 | ||
887 | static enum ofperr | |
888 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
889 | size_t n_insts, | |
890 | const struct ofp11_instruction *out[]) | |
891 | { | |
892 | const struct ofp11_instruction *inst; | |
893 | size_t left; | |
894 | ||
895 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); | |
896 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
897 | enum ovs_instruction_type type; | |
898 | enum ofperr error; | |
899 | ||
900 | error = decode_openflow11_instruction(inst, &type); | |
901 | if (error) { | |
902 | return error; | |
903 | } | |
904 | ||
905 | if (out[type]) { | |
e38c9de5 | 906 | return OFPERR_OFPIT_BAD_INSTRUCTION; |
d01c980f BP |
907 | } |
908 | out[type] = inst; | |
909 | } | |
910 | ||
911 | if (left) { | |
912 | VLOG_WARN_RL(&rl, "bad instruction format at offset %zu", | |
913 | (n_insts - left) * sizeof *inst); | |
914 | return OFPERR_OFPBIC_BAD_LEN; | |
915 | } | |
916 | return 0; | |
917 | } | |
918 | ||
919 | static void | |
920 | get_actions_from_instruction(const struct ofp11_instruction *inst, | |
921 | const union ofp_action **actions, | |
922 | size_t *n_actions) | |
923 | { | |
924 | *actions = (const union ofp_action *) (inst + 1); | |
925 | *n_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN; | |
926 | } | |
927 | ||
928 | /* Attempts to convert 'actions_len' bytes of OpenFlow 1.1 actions from the | |
929 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
930 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
931 | * Returns 0 if successful, otherwise an OpenFlow error. | |
932 | * | |
933 | * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in | |
934 | * instructions, so you should call ofpacts_pull_openflow11_instructions() | |
935 | * instead of this function. | |
936 | * | |
13f894b1 BP |
937 | * The parsed actions are valid generically, but they may not be valid in a |
938 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
939 | * generically, but specific datapaths may only support port numbers in a | |
940 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
941 | * valid in a specific context. */ | |
d01c980f BP |
942 | enum ofperr |
943 | ofpacts_pull_openflow11_actions(struct ofpbuf *openflow, | |
944 | unsigned int actions_len, | |
945 | struct ofpbuf *ofpacts) | |
946 | { | |
0300caaf IY |
947 | return ofpacts_pull_actions(openflow, actions_len, ofpacts, |
948 | ofpacts_from_openflow11); | |
d01c980f BP |
949 | } |
950 | ||
951 | enum ofperr | |
952 | ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow, | |
953 | unsigned int instructions_len, | |
954 | struct ofpbuf *ofpacts) | |
955 | { | |
956 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
957 | const struct ofp11_instruction *instructions; | |
958 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
959 | enum ofperr error; | |
960 | ||
961 | ofpbuf_clear(ofpacts); | |
962 | ||
963 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { | |
964 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
965 | "multiple of %d", | |
966 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
967 | error = OFPERR_OFPBIC_BAD_LEN; | |
968 | goto exit; | |
969 | } | |
970 | ||
971 | instructions = ofpbuf_try_pull(openflow, instructions_len); | |
972 | if (instructions == NULL) { | |
973 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
974 | "remaining message length (%zu)", | |
975 | instructions_len, openflow->size); | |
976 | error = OFPERR_OFPBIC_BAD_LEN; | |
977 | goto exit; | |
978 | } | |
979 | ||
980 | error = decode_openflow11_instructions( | |
981 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
982 | insts); | |
983 | if (error) { | |
984 | goto exit; | |
985 | } | |
986 | ||
987 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
988 | const union ofp_action *actions; | |
989 | size_t n_actions; | |
990 | ||
991 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], | |
992 | &actions, &n_actions); | |
993 | error = ofpacts_from_openflow11(actions, n_actions, ofpacts); | |
994 | if (error) { | |
995 | goto exit; | |
996 | } | |
997 | } | |
b19e8793 IY |
998 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { |
999 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
1000 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
1001 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
1002 | } | |
8dd54666 | 1003 | /* TODO:XXX Write-Actions */ |
4cceacb9 JS |
1004 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { |
1005 | const struct ofp11_instruction_write_metadata *oiwm; | |
1006 | struct ofpact_metadata *om; | |
1007 | ||
1008 | oiwm = (const struct ofp11_instruction_write_metadata *) | |
1009 | insts[OVSINST_OFPIT11_WRITE_METADATA]; | |
1010 | ||
1011 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
1012 | om->metadata = oiwm->metadata; | |
1013 | om->mask = oiwm->metadata_mask; | |
1014 | } | |
8dd54666 IY |
1015 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { |
1016 | const struct ofp11_instruction_goto_table *oigt; | |
1017 | struct ofpact_goto_table *ogt; | |
1018 | ||
1019 | oigt = instruction_get_OFPIT11_GOTO_TABLE( | |
1020 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
1021 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
1022 | ogt->table_id = oigt->table_id; | |
1023 | } | |
d01c980f | 1024 | |
4cceacb9 | 1025 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { |
d01c980f BP |
1026 | error = OFPERR_OFPBIC_UNSUP_INST; |
1027 | goto exit; | |
1028 | } | |
1029 | ||
4cceacb9 | 1030 | error = ofpacts_verify(ofpacts->data, ofpacts->size); |
d01c980f BP |
1031 | exit: |
1032 | if (error) { | |
1033 | ofpbuf_clear(ofpacts); | |
1034 | } | |
1035 | return error; | |
1036 | } | |
1037 | \f | |
f25d0cf3 BP |
1038 | static enum ofperr |
1039 | ofpact_check__(const struct ofpact *a, const struct flow *flow, int max_ports) | |
1040 | { | |
1041 | const struct ofpact_enqueue *enqueue; | |
1042 | ||
1043 | switch (a->type) { | |
1044 | case OFPACT_OUTPUT: | |
1045 | return ofputil_check_output_port(ofpact_get_OUTPUT(a)->port, | |
1046 | max_ports); | |
1047 | ||
1048 | case OFPACT_CONTROLLER: | |
1049 | return 0; | |
1050 | ||
1051 | case OFPACT_ENQUEUE: | |
1052 | enqueue = ofpact_get_ENQUEUE(a); | |
1053 | if (enqueue->port >= max_ports && enqueue->port != OFPP_IN_PORT | |
1054 | && enqueue->port != OFPP_LOCAL) { | |
1055 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1056 | } | |
1057 | return 0; | |
1058 | ||
1059 | case OFPACT_OUTPUT_REG: | |
1060 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
1061 | ||
1062 | case OFPACT_BUNDLE: | |
1063 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
1064 | ||
1065 | case OFPACT_SET_VLAN_VID: | |
1066 | case OFPACT_SET_VLAN_PCP: | |
1067 | case OFPACT_STRIP_VLAN: | |
1068 | case OFPACT_SET_ETH_SRC: | |
1069 | case OFPACT_SET_ETH_DST: | |
1070 | case OFPACT_SET_IPV4_SRC: | |
1071 | case OFPACT_SET_IPV4_DST: | |
1072 | case OFPACT_SET_IPV4_DSCP: | |
1073 | case OFPACT_SET_L4_SRC_PORT: | |
1074 | case OFPACT_SET_L4_DST_PORT: | |
1075 | return 0; | |
1076 | ||
1077 | case OFPACT_REG_MOVE: | |
1078 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
1079 | ||
1080 | case OFPACT_REG_LOAD: | |
1081 | return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow); | |
1082 | ||
1083 | case OFPACT_DEC_TTL: | |
1084 | case OFPACT_SET_TUNNEL: | |
1085 | case OFPACT_SET_QUEUE: | |
1086 | case OFPACT_POP_QUEUE: | |
1087 | case OFPACT_FIN_TIMEOUT: | |
1088 | case OFPACT_RESUBMIT: | |
1089 | return 0; | |
1090 | ||
1091 | case OFPACT_LEARN: | |
1092 | return learn_check(ofpact_get_LEARN(a), flow); | |
1093 | ||
1094 | case OFPACT_MULTIPATH: | |
1095 | return multipath_check(ofpact_get_MULTIPATH(a), flow); | |
1096 | ||
1097 | case OFPACT_AUTOPATH: | |
1098 | return autopath_check(ofpact_get_AUTOPATH(a), flow); | |
1099 | ||
1100 | case OFPACT_NOTE: | |
1101 | case OFPACT_EXIT: | |
1102 | return 0; | |
1103 | ||
b19e8793 | 1104 | case OFPACT_CLEAR_ACTIONS: |
4cceacb9 | 1105 | case OFPACT_WRITE_METADATA: |
8dd54666 IY |
1106 | case OFPACT_GOTO_TABLE: |
1107 | return 0; | |
1108 | ||
f25d0cf3 BP |
1109 | default: |
1110 | NOT_REACHED(); | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are | |
1115 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
1116 | * switch with no more than 'max_ports' ports. */ | |
1117 | enum ofperr | |
1118 | ofpacts_check(const struct ofpact ofpacts[], size_t ofpacts_len, | |
1119 | const struct flow *flow, int max_ports) | |
1120 | { | |
1121 | const struct ofpact *a; | |
1122 | ||
1123 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1124 | enum ofperr error = ofpact_check__(a, flow, max_ports); | |
1125 | if (error) { | |
1126 | return error; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
4cceacb9 JS |
1132 | |
1133 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are | |
1134 | * in the appropriate order as defined by the OpenFlow spec. */ | |
1135 | enum ofperr | |
1136 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len) | |
1137 | { | |
1138 | const struct ofpact *a; | |
1139 | const struct ofpact_metadata *om = NULL; | |
1140 | ||
1141 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1142 | if (om) { | |
1143 | if (a->type == OFPACT_WRITE_METADATA) { | |
1144 | VLOG_WARN("duplicate write_metadata instruction specified"); | |
1145 | /* should be OFPERR_OFPET_BAD_ACTION? */ | |
1146 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
1147 | } else { | |
1148 | VLOG_WARN("write_metadata instruction must be specified after " | |
1149 | "other instructions/actions"); | |
1150 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | if (a->type == OFPACT_WRITE_METADATA) { | |
1155 | om = (const struct ofpact_metadata *) a; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | return 0; | |
1160 | } | |
f25d0cf3 BP |
1161 | \f |
1162 | /* Converting ofpacts to Nicira OpenFlow extensions. */ | |
1163 | ||
1164 | static void | |
1165 | ofpact_output_reg_to_nxast(const struct ofpact_output_reg *output_reg, | |
1166 | struct ofpbuf *out) | |
1167 | { | |
1168 | struct nx_action_output_reg *naor = ofputil_put_NXAST_OUTPUT_REG(out); | |
1169 | ||
1170 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1171 | output_reg->src.n_bits); | |
1172 | naor->src = htonl(output_reg->src.field->nxm_header); | |
1173 | naor->max_len = htons(output_reg->max_len); | |
1174 | } | |
1175 | ||
1176 | static void | |
1177 | ofpact_resubmit_to_nxast(const struct ofpact_resubmit *resubmit, | |
1178 | struct ofpbuf *out) | |
1179 | { | |
1180 | struct nx_action_resubmit *nar; | |
1181 | ||
1182 | if (resubmit->table_id == 0xff | |
1183 | && resubmit->ofpact.compat != OFPUTIL_NXAST_RESUBMIT_TABLE) { | |
1184 | nar = ofputil_put_NXAST_RESUBMIT(out); | |
1185 | } else { | |
1186 | nar = ofputil_put_NXAST_RESUBMIT_TABLE(out); | |
1187 | nar->table = resubmit->table_id; | |
1188 | } | |
1189 | nar->in_port = htons(resubmit->in_port); | |
1190 | } | |
1191 | ||
1192 | static void | |
1193 | ofpact_set_tunnel_to_nxast(const struct ofpact_tunnel *tunnel, | |
1194 | struct ofpbuf *out) | |
1195 | { | |
1196 | uint64_t tun_id = tunnel->tun_id; | |
1197 | ||
1198 | if (tun_id <= UINT32_MAX | |
1199 | && tunnel->ofpact.compat != OFPUTIL_NXAST_SET_TUNNEL64) { | |
1200 | ofputil_put_NXAST_SET_TUNNEL(out)->tun_id = htonl(tun_id); | |
1201 | } else { | |
1202 | ofputil_put_NXAST_SET_TUNNEL64(out)->tun_id = htonll(tun_id); | |
1203 | } | |
1204 | } | |
1205 | ||
4cceacb9 JS |
1206 | static void |
1207 | ofpact_write_metadata_to_nxast(const struct ofpact_metadata *om, | |
1208 | struct ofpbuf *out) | |
1209 | { | |
1210 | struct nx_action_write_metadata *nawm; | |
1211 | ||
1212 | nawm = ofputil_put_NXAST_WRITE_METADATA(out); | |
1213 | nawm->metadata = om->metadata; | |
1214 | nawm->mask = om->mask; | |
1215 | } | |
1216 | ||
f25d0cf3 BP |
1217 | static void |
1218 | ofpact_note_to_nxast(const struct ofpact_note *note, struct ofpbuf *out) | |
1219 | { | |
1220 | size_t start_ofs = out->size; | |
1221 | struct nx_action_note *nan; | |
1222 | unsigned int remainder; | |
1223 | unsigned int len; | |
1224 | ||
1225 | nan = ofputil_put_NXAST_NOTE(out); | |
1226 | out->size -= sizeof nan->note; | |
1227 | ||
1228 | ofpbuf_put(out, note->data, note->length); | |
1229 | ||
1230 | len = out->size - start_ofs; | |
1231 | remainder = len % OFP_ACTION_ALIGN; | |
1232 | if (remainder) { | |
1233 | ofpbuf_put_zeros(out, OFP_ACTION_ALIGN - remainder); | |
1234 | } | |
1235 | nan = (struct nx_action_note *)((char *)out->data + start_ofs); | |
1236 | nan->len = htons(out->size - start_ofs); | |
1237 | } | |
1238 | ||
1239 | static void | |
1240 | ofpact_controller_to_nxast(const struct ofpact_controller *oc, | |
1241 | struct ofpbuf *out) | |
1242 | { | |
1243 | struct nx_action_controller *nac; | |
1244 | ||
1245 | nac = ofputil_put_NXAST_CONTROLLER(out); | |
1246 | nac->max_len = htons(oc->max_len); | |
1247 | nac->controller_id = htons(oc->controller_id); | |
1248 | nac->reason = oc->reason; | |
1249 | } | |
1250 | ||
c2d967a5 MM |
1251 | static void |
1252 | ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids, | |
1253 | struct ofpbuf *out) | |
1254 | { | |
1255 | if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) { | |
1256 | ofputil_put_NXAST_DEC_TTL(out); | |
1257 | } else { | |
1258 | struct nx_action_cnt_ids *nac_ids = | |
1259 | ofputil_put_NXAST_DEC_TTL_CNT_IDS(out); | |
1260 | int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN); | |
1261 | ovs_be16 *ids; | |
1262 | size_t i; | |
1263 | ||
1264 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); | |
1265 | nac_ids->n_controllers = htons(oc_ids->n_controllers); | |
1266 | ||
1267 | ids = ofpbuf_put_zeros(out, ids_len); | |
1268 | for (i = 0; i < oc_ids->n_controllers; i++) { | |
1269 | ids[i] = htons(oc_ids->cnt_ids[i]); | |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | ||
f25d0cf3 BP |
1274 | static void |
1275 | ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout, | |
1276 | struct ofpbuf *out) | |
1277 | { | |
1278 | struct nx_action_fin_timeout *naft = ofputil_put_NXAST_FIN_TIMEOUT(out); | |
1279 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
1280 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
1281 | } | |
1282 | ||
1283 | static void | |
1284 | ofpact_to_nxast(const struct ofpact *a, struct ofpbuf *out) | |
1285 | { | |
1286 | switch (a->type) { | |
1287 | case OFPACT_CONTROLLER: | |
1288 | ofpact_controller_to_nxast(ofpact_get_CONTROLLER(a), out); | |
1289 | break; | |
1290 | ||
1291 | case OFPACT_OUTPUT_REG: | |
1292 | ofpact_output_reg_to_nxast(ofpact_get_OUTPUT_REG(a), out); | |
1293 | break; | |
1294 | ||
1295 | case OFPACT_BUNDLE: | |
1296 | bundle_to_nxast(ofpact_get_BUNDLE(a), out); | |
1297 | break; | |
1298 | ||
1299 | case OFPACT_REG_MOVE: | |
1300 | nxm_reg_move_to_nxast(ofpact_get_REG_MOVE(a), out); | |
1301 | break; | |
1302 | ||
1303 | case OFPACT_REG_LOAD: | |
1304 | nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out); | |
1305 | break; | |
1306 | ||
1307 | case OFPACT_DEC_TTL: | |
c2d967a5 | 1308 | ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out); |
f25d0cf3 BP |
1309 | break; |
1310 | ||
1311 | case OFPACT_SET_TUNNEL: | |
1312 | ofpact_set_tunnel_to_nxast(ofpact_get_SET_TUNNEL(a), out); | |
1313 | break; | |
1314 | ||
4cceacb9 JS |
1315 | case OFPACT_WRITE_METADATA: |
1316 | ofpact_write_metadata_to_nxast(ofpact_get_WRITE_METADATA(a), out); | |
1317 | break; | |
1318 | ||
f25d0cf3 BP |
1319 | case OFPACT_SET_QUEUE: |
1320 | ofputil_put_NXAST_SET_QUEUE(out)->queue_id | |
1321 | = htonl(ofpact_get_SET_QUEUE(a)->queue_id); | |
1322 | break; | |
1323 | ||
1324 | case OFPACT_POP_QUEUE: | |
1325 | ofputil_put_NXAST_POP_QUEUE(out); | |
1326 | break; | |
1327 | ||
1328 | case OFPACT_FIN_TIMEOUT: | |
1329 | ofpact_fin_timeout_to_nxast(ofpact_get_FIN_TIMEOUT(a), out); | |
1330 | break; | |
1331 | ||
1332 | case OFPACT_RESUBMIT: | |
1333 | ofpact_resubmit_to_nxast(ofpact_get_RESUBMIT(a), out); | |
1334 | break; | |
1335 | ||
1336 | case OFPACT_LEARN: | |
1337 | learn_to_nxast(ofpact_get_LEARN(a), out); | |
1338 | break; | |
1339 | ||
1340 | case OFPACT_MULTIPATH: | |
1341 | multipath_to_nxast(ofpact_get_MULTIPATH(a), out); | |
1342 | break; | |
1343 | ||
1344 | case OFPACT_AUTOPATH: | |
1345 | autopath_to_nxast(ofpact_get_AUTOPATH(a), out); | |
1346 | break; | |
1347 | ||
1348 | case OFPACT_NOTE: | |
1349 | ofpact_note_to_nxast(ofpact_get_NOTE(a), out); | |
1350 | break; | |
1351 | ||
1352 | case OFPACT_EXIT: | |
1353 | ofputil_put_NXAST_EXIT(out); | |
1354 | break; | |
1355 | ||
1356 | case OFPACT_OUTPUT: | |
1357 | case OFPACT_ENQUEUE: | |
1358 | case OFPACT_SET_VLAN_VID: | |
1359 | case OFPACT_SET_VLAN_PCP: | |
1360 | case OFPACT_STRIP_VLAN: | |
1361 | case OFPACT_SET_ETH_SRC: | |
1362 | case OFPACT_SET_ETH_DST: | |
1363 | case OFPACT_SET_IPV4_SRC: | |
1364 | case OFPACT_SET_IPV4_DST: | |
1365 | case OFPACT_SET_IPV4_DSCP: | |
1366 | case OFPACT_SET_L4_SRC_PORT: | |
1367 | case OFPACT_SET_L4_DST_PORT: | |
b19e8793 | 1368 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 | 1369 | case OFPACT_GOTO_TABLE: |
f25d0cf3 BP |
1370 | NOT_REACHED(); |
1371 | } | |
1372 | } | |
1373 | \f | |
1374 | /* Converting ofpacts to OpenFlow 1.0. */ | |
1375 | ||
1376 | static void | |
1377 | ofpact_output_to_openflow10(const struct ofpact_output *output, | |
1378 | struct ofpbuf *out) | |
1379 | { | |
d01c980f | 1380 | struct ofp10_action_output *oao; |
f25d0cf3 BP |
1381 | |
1382 | oao = ofputil_put_OFPAT10_OUTPUT(out); | |
1383 | oao->port = htons(output->port); | |
1384 | oao->max_len = htons(output->max_len); | |
1385 | } | |
1386 | ||
1387 | static void | |
1388 | ofpact_enqueue_to_openflow10(const struct ofpact_enqueue *enqueue, | |
1389 | struct ofpbuf *out) | |
1390 | { | |
1391 | struct ofp_action_enqueue *oae; | |
1392 | ||
1393 | oae = ofputil_put_OFPAT10_ENQUEUE(out); | |
1394 | oae->port = htons(enqueue->port); | |
1395 | oae->queue_id = htonl(enqueue->queue); | |
1396 | } | |
1397 | ||
1398 | static void | |
1399 | ofpact_to_openflow10(const struct ofpact *a, struct ofpbuf *out) | |
1400 | { | |
1401 | switch (a->type) { | |
1402 | case OFPACT_OUTPUT: | |
1403 | ofpact_output_to_openflow10(ofpact_get_OUTPUT(a), out); | |
1404 | break; | |
1405 | ||
1406 | case OFPACT_ENQUEUE: | |
1407 | ofpact_enqueue_to_openflow10(ofpact_get_ENQUEUE(a), out); | |
1408 | break; | |
1409 | ||
1410 | case OFPACT_SET_VLAN_VID: | |
1411 | ofputil_put_OFPAT10_SET_VLAN_VID(out)->vlan_vid | |
1412 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1413 | break; | |
1414 | ||
1415 | case OFPACT_SET_VLAN_PCP: | |
1416 | ofputil_put_OFPAT10_SET_VLAN_PCP(out)->vlan_pcp | |
1417 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
1418 | break; | |
1419 | ||
1420 | case OFPACT_STRIP_VLAN: | |
1421 | ofputil_put_OFPAT10_STRIP_VLAN(out); | |
1422 | break; | |
1423 | ||
1424 | case OFPACT_SET_ETH_SRC: | |
1425 | memcpy(ofputil_put_OFPAT10_SET_DL_SRC(out)->dl_addr, | |
1426 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
1427 | break; | |
1428 | ||
1429 | case OFPACT_SET_ETH_DST: | |
1430 | memcpy(ofputil_put_OFPAT10_SET_DL_DST(out)->dl_addr, | |
1431 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
1432 | break; | |
1433 | ||
1434 | case OFPACT_SET_IPV4_SRC: | |
1435 | ofputil_put_OFPAT10_SET_NW_SRC(out)->nw_addr | |
1436 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
1437 | break; | |
1438 | ||
1439 | case OFPACT_SET_IPV4_DST: | |
1440 | ofputil_put_OFPAT10_SET_NW_DST(out)->nw_addr | |
1441 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
1442 | break; | |
1443 | ||
1444 | case OFPACT_SET_IPV4_DSCP: | |
1445 | ofputil_put_OFPAT10_SET_NW_TOS(out)->nw_tos | |
1446 | = ofpact_get_SET_IPV4_DSCP(a)->dscp; | |
1447 | break; | |
1448 | ||
1449 | case OFPACT_SET_L4_SRC_PORT: | |
1450 | ofputil_put_OFPAT10_SET_TP_SRC(out)->tp_port | |
1451 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1452 | break; | |
1453 | ||
1454 | case OFPACT_SET_L4_DST_PORT: | |
1455 | ofputil_put_OFPAT10_SET_TP_DST(out)->tp_port | |
1456 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
1457 | break; | |
1458 | ||
b19e8793 | 1459 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 IY |
1460 | case OFPACT_GOTO_TABLE: |
1461 | /* TODO:XXX */ | |
1462 | break; | |
1463 | ||
f25d0cf3 BP |
1464 | case OFPACT_CONTROLLER: |
1465 | case OFPACT_OUTPUT_REG: | |
1466 | case OFPACT_BUNDLE: | |
1467 | case OFPACT_REG_MOVE: | |
1468 | case OFPACT_REG_LOAD: | |
1469 | case OFPACT_DEC_TTL: | |
1470 | case OFPACT_SET_TUNNEL: | |
4cceacb9 | 1471 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
1472 | case OFPACT_SET_QUEUE: |
1473 | case OFPACT_POP_QUEUE: | |
1474 | case OFPACT_FIN_TIMEOUT: | |
1475 | case OFPACT_RESUBMIT: | |
1476 | case OFPACT_LEARN: | |
1477 | case OFPACT_MULTIPATH: | |
1478 | case OFPACT_AUTOPATH: | |
1479 | case OFPACT_NOTE: | |
1480 | case OFPACT_EXIT: | |
1481 | ofpact_to_nxast(a, out); | |
1482 | break; | |
1483 | } | |
1484 | } | |
1485 | ||
d01c980f | 1486 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow 1.0 |
f25d0cf3 BP |
1487 | * actions in 'openflow', appending the actions to any existing data in |
1488 | * 'openflow'. */ | |
1489 | void | |
d01c980f BP |
1490 | ofpacts_put_openflow10(const struct ofpact ofpacts[], size_t ofpacts_len, |
1491 | struct ofpbuf *openflow) | |
f25d0cf3 BP |
1492 | { |
1493 | const struct ofpact *a; | |
1494 | ||
1495 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1496 | ofpact_to_openflow10(a, openflow); | |
1497 | } | |
1498 | } | |
1499 | \f | |
d01c980f BP |
1500 | /* Converting ofpacts to OpenFlow 1.1. */ |
1501 | ||
1502 | static void | |
1503 | ofpact_output_to_openflow11(const struct ofpact_output *output, | |
1504 | struct ofpbuf *out) | |
1505 | { | |
1506 | struct ofp11_action_output *oao; | |
1507 | ||
1508 | oao = ofputil_put_OFPAT11_OUTPUT(out); | |
1509 | oao->port = ofputil_port_to_ofp11(output->port); | |
1510 | oao->max_len = htons(output->max_len); | |
1511 | } | |
1512 | ||
99086062 BP |
1513 | static void |
1514 | ofpact_dec_ttl_to_openflow11(const struct ofpact_cnt_ids *dec_ttl, | |
1515 | struct ofpbuf *out) | |
1516 | { | |
1517 | if (dec_ttl->n_controllers == 1 && dec_ttl->cnt_ids[0] == 0 | |
1518 | && (!dec_ttl->ofpact.compat || | |
1519 | dec_ttl->ofpact.compat == OFPUTIL_OFPAT11_DEC_NW_TTL)) { | |
1520 | ofputil_put_OFPAT11_DEC_NW_TTL(out); | |
1521 | } else { | |
1522 | ofpact_dec_ttl_to_nxast(dec_ttl, out); | |
1523 | } | |
1524 | } | |
1525 | ||
d01c980f BP |
1526 | static void |
1527 | ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out) | |
1528 | { | |
1529 | switch (a->type) { | |
1530 | case OFPACT_OUTPUT: | |
1531 | return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out); | |
1532 | ||
1533 | case OFPACT_ENQUEUE: | |
1534 | /* XXX */ | |
1535 | break; | |
1536 | ||
1537 | case OFPACT_SET_VLAN_VID: | |
1538 | ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid | |
1539 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1540 | break; | |
1541 | ||
1542 | case OFPACT_SET_VLAN_PCP: | |
1543 | ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp | |
1544 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
1545 | break; | |
1546 | ||
1547 | case OFPACT_STRIP_VLAN: | |
8e61c110 | 1548 | ofputil_put_OFPAT11_POP_VLAN(out); |
d01c980f BP |
1549 | break; |
1550 | ||
1551 | case OFPACT_SET_ETH_SRC: | |
1552 | memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr, | |
1553 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
1554 | break; | |
1555 | ||
1556 | case OFPACT_SET_ETH_DST: | |
1557 | memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr, | |
1558 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
1559 | break; | |
1560 | ||
1561 | case OFPACT_SET_IPV4_SRC: | |
1562 | ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr | |
1563 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
1564 | break; | |
1565 | ||
1566 | case OFPACT_SET_IPV4_DST: | |
1567 | ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr | |
1568 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
1569 | break; | |
1570 | ||
1571 | case OFPACT_SET_IPV4_DSCP: | |
1572 | ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos | |
1573 | = ofpact_get_SET_IPV4_DSCP(a)->dscp; | |
1574 | break; | |
1575 | ||
1576 | case OFPACT_SET_L4_SRC_PORT: | |
1577 | ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port | |
1578 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1579 | break; | |
1580 | ||
1581 | case OFPACT_SET_L4_DST_PORT: | |
1582 | ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port | |
1583 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
1584 | break; | |
1585 | ||
7bcb1506 | 1586 | case OFPACT_DEC_TTL: |
99086062 | 1587 | ofpact_dec_ttl_to_openflow11(ofpact_get_DEC_TTL(a), out); |
7bcb1506 IY |
1588 | break; |
1589 | ||
4cceacb9 JS |
1590 | case OFPACT_WRITE_METADATA: |
1591 | /* OpenFlow 1.1 uses OFPIT_WRITE_METADATA to express this action. */ | |
1592 | break; | |
1593 | ||
b19e8793 | 1594 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 IY |
1595 | case OFPACT_GOTO_TABLE: |
1596 | NOT_REACHED(); | |
1597 | ||
d01c980f BP |
1598 | case OFPACT_CONTROLLER: |
1599 | case OFPACT_OUTPUT_REG: | |
1600 | case OFPACT_BUNDLE: | |
1601 | case OFPACT_REG_MOVE: | |
1602 | case OFPACT_REG_LOAD: | |
d01c980f BP |
1603 | case OFPACT_SET_TUNNEL: |
1604 | case OFPACT_SET_QUEUE: | |
1605 | case OFPACT_POP_QUEUE: | |
1606 | case OFPACT_FIN_TIMEOUT: | |
1607 | case OFPACT_RESUBMIT: | |
1608 | case OFPACT_LEARN: | |
1609 | case OFPACT_MULTIPATH: | |
1610 | case OFPACT_AUTOPATH: | |
1611 | case OFPACT_NOTE: | |
1612 | case OFPACT_EXIT: | |
1613 | ofpact_to_nxast(a, out); | |
1614 | break; | |
1615 | } | |
1616 | } | |
1617 | ||
1618 | /* Converts the ofpacts in 'ofpacts' (terminated by OFPACT_END) into OpenFlow | |
1619 | * 1.1 actions in 'openflow', appending the actions to any existing data in | |
1620 | * 'openflow'. */ | |
a07c15bc | 1621 | size_t |
d01c980f BP |
1622 | ofpacts_put_openflow11_actions(const struct ofpact ofpacts[], |
1623 | size_t ofpacts_len, struct ofpbuf *openflow) | |
1624 | { | |
1625 | const struct ofpact *a; | |
a07c15bc | 1626 | size_t start_size = openflow->size; |
d01c980f BP |
1627 | |
1628 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1629 | ofpact_to_openflow11(a, openflow); | |
1630 | } | |
a07c15bc SH |
1631 | |
1632 | return openflow->size - start_size; | |
d01c980f BP |
1633 | } |
1634 | ||
8dd54666 IY |
1635 | static void |
1636 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) | |
d01c980f BP |
1637 | { |
1638 | struct ofp11_instruction_actions *oia; | |
d01c980f BP |
1639 | |
1640 | /* Update the instruction's length (or, if it's empty, delete it). */ | |
1641 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); | |
1642 | if (openflow->size > ofs + sizeof *oia) { | |
1643 | oia->len = htons(openflow->size - ofs); | |
1644 | } else { | |
1645 | openflow->size = ofs; | |
1646 | } | |
1647 | } | |
8dd54666 IY |
1648 | |
1649 | void | |
1650 | ofpacts_put_openflow11_instructions(const struct ofpact ofpacts[], | |
1651 | size_t ofpacts_len, | |
1652 | struct ofpbuf *openflow) | |
1653 | { | |
1654 | const struct ofpact *a; | |
1655 | ||
1656 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8dd54666 | 1657 | /* TODO:XXX Write-Actions */ |
4cceacb9 | 1658 | |
b19e8793 | 1659 | if (a->type == OFPACT_CLEAR_ACTIONS) { |
f606c7e9 | 1660 | instruction_put_OFPIT11_CLEAR_ACTIONS(openflow); |
b19e8793 | 1661 | } else if (a->type == OFPACT_GOTO_TABLE) { |
8dd54666 IY |
1662 | struct ofp11_instruction_goto_table *oigt; |
1663 | ||
1664 | oigt = instruction_put_OFPIT11_GOTO_TABLE(openflow); | |
1665 | oigt->table_id = ofpact_get_GOTO_TABLE(a)->table_id; | |
1666 | memset(oigt->pad, 0, sizeof oigt->pad); | |
4cceacb9 JS |
1667 | } else if (a->type == OFPACT_WRITE_METADATA) { |
1668 | const struct ofpact_metadata *om; | |
1669 | struct ofp11_instruction_write_metadata *oiwm; | |
1670 | ||
1671 | om = ofpact_get_WRITE_METADATA(a); | |
1672 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(openflow); | |
1673 | oiwm->metadata = om->metadata; | |
1674 | oiwm->metadata_mask = om->mask; | |
8dd54666 IY |
1675 | } else if (!ofpact_is_instruction(a)) { |
1676 | /* Apply-actions */ | |
1677 | const size_t ofs = openflow->size; | |
1678 | const size_t ofpacts_len_left = | |
1679 | (uint8_t*)ofpact_end(ofpacts, ofpacts_len) - (uint8_t*)a; | |
1680 | const struct ofpact *action; | |
1681 | const struct ofpact *processed = a; | |
1682 | ||
1683 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
1684 | OFPACT_FOR_EACH(action, a, ofpacts_len_left) { | |
1685 | if (ofpact_is_instruction(action)) { | |
1686 | break; | |
1687 | } | |
1688 | ofpact_to_openflow11(action, openflow); | |
1689 | processed = action; | |
1690 | } | |
1691 | ofpacts_update_instruction_actions(openflow, ofs); | |
1692 | a = processed; | |
1693 | } | |
1694 | } | |
1695 | } | |
d01c980f | 1696 | \f |
f25d0cf3 BP |
1697 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
1698 | static bool | |
1699 | ofpact_outputs_to_port(const struct ofpact *ofpact, uint16_t port) | |
1700 | { | |
1701 | switch (ofpact->type) { | |
1702 | case OFPACT_OUTPUT: | |
1703 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
1704 | case OFPACT_ENQUEUE: | |
1705 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
1706 | case OFPACT_CONTROLLER: | |
1707 | return port == OFPP_CONTROLLER; | |
1708 | ||
1709 | case OFPACT_OUTPUT_REG: | |
1710 | case OFPACT_BUNDLE: | |
1711 | case OFPACT_SET_VLAN_VID: | |
1712 | case OFPACT_SET_VLAN_PCP: | |
1713 | case OFPACT_STRIP_VLAN: | |
1714 | case OFPACT_SET_ETH_SRC: | |
1715 | case OFPACT_SET_ETH_DST: | |
1716 | case OFPACT_SET_IPV4_SRC: | |
1717 | case OFPACT_SET_IPV4_DST: | |
1718 | case OFPACT_SET_IPV4_DSCP: | |
1719 | case OFPACT_SET_L4_SRC_PORT: | |
1720 | case OFPACT_SET_L4_DST_PORT: | |
1721 | case OFPACT_REG_MOVE: | |
1722 | case OFPACT_REG_LOAD: | |
1723 | case OFPACT_DEC_TTL: | |
1724 | case OFPACT_SET_TUNNEL: | |
4cceacb9 | 1725 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
1726 | case OFPACT_SET_QUEUE: |
1727 | case OFPACT_POP_QUEUE: | |
1728 | case OFPACT_FIN_TIMEOUT: | |
1729 | case OFPACT_RESUBMIT: | |
1730 | case OFPACT_LEARN: | |
1731 | case OFPACT_MULTIPATH: | |
1732 | case OFPACT_AUTOPATH: | |
1733 | case OFPACT_NOTE: | |
1734 | case OFPACT_EXIT: | |
b19e8793 | 1735 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 | 1736 | case OFPACT_GOTO_TABLE: |
f25d0cf3 BP |
1737 | default: |
1738 | return false; | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
1743 | * to 'port', false otherwise. */ | |
1744 | bool | |
1745 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
1746 | uint16_t port) | |
1747 | { | |
1748 | const struct ofpact *a; | |
1749 | ||
1750 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
1751 | if (ofpact_outputs_to_port(a, port)) { | |
1752 | return true; | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | return false; | |
1757 | } | |
1758 | ||
1759 | bool | |
1760 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
1761 | const struct ofpact *b, size_t b_len) | |
1762 | { | |
1763 | return a_len == b_len && !memcmp(a, b, a_len); | |
1764 | } | |
1765 | \f | |
1766 | /* Formatting ofpacts. */ | |
1767 | ||
1768 | static void | |
1769 | print_note(const struct ofpact_note *note, struct ds *string) | |
1770 | { | |
1771 | size_t i; | |
1772 | ||
1773 | ds_put_cstr(string, "note:"); | |
1774 | for (i = 0; i < note->length; i++) { | |
1775 | if (i) { | |
1776 | ds_put_char(string, '.'); | |
1777 | } | |
1778 | ds_put_format(string, "%02"PRIx8, note->data[i]); | |
1779 | } | |
1780 | } | |
1781 | ||
c2d967a5 MM |
1782 | static void |
1783 | print_dec_ttl(const struct ofpact_cnt_ids *ids, | |
1784 | struct ds *s) | |
1785 | { | |
1786 | size_t i; | |
1787 | ||
1788 | ds_put_cstr(s, "dec_ttl"); | |
1789 | if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) { | |
1790 | ds_put_cstr(s, "("); | |
1791 | for (i = 0; i < ids->n_controllers; i++) { | |
1792 | if (i) { | |
1793 | ds_put_cstr(s, ","); | |
1794 | } | |
1795 | ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]); | |
1796 | } | |
1797 | ds_put_cstr(s, ")"); | |
1798 | } | |
1799 | } | |
1800 | ||
f25d0cf3 BP |
1801 | static void |
1802 | print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout, | |
1803 | struct ds *s) | |
1804 | { | |
1805 | ds_put_cstr(s, "fin_timeout("); | |
1806 | if (fin_timeout->fin_idle_timeout) { | |
1807 | ds_put_format(s, "idle_timeout=%"PRIu16",", | |
1808 | fin_timeout->fin_idle_timeout); | |
1809 | } | |
1810 | if (fin_timeout->fin_hard_timeout) { | |
1811 | ds_put_format(s, "hard_timeout=%"PRIu16",", | |
1812 | fin_timeout->fin_hard_timeout); | |
1813 | } | |
1814 | ds_chomp(s, ','); | |
1815 | ds_put_char(s, ')'); | |
1816 | } | |
1817 | ||
1818 | static void | |
1819 | ofpact_format(const struct ofpact *a, struct ds *s) | |
1820 | { | |
1821 | const struct ofpact_enqueue *enqueue; | |
1822 | const struct ofpact_resubmit *resubmit; | |
1823 | const struct ofpact_autopath *autopath; | |
1824 | const struct ofpact_controller *controller; | |
4cceacb9 | 1825 | const struct ofpact_metadata *metadata; |
f25d0cf3 BP |
1826 | const struct ofpact_tunnel *tunnel; |
1827 | uint16_t port; | |
1828 | ||
1829 | switch (a->type) { | |
1830 | case OFPACT_OUTPUT: | |
1831 | port = ofpact_get_OUTPUT(a)->port; | |
1832 | if (port < OFPP_MAX) { | |
1833 | ds_put_format(s, "output:%"PRIu16, port); | |
1834 | } else { | |
1835 | ofputil_format_port(port, s); | |
1836 | if (port == OFPP_CONTROLLER) { | |
1837 | ds_put_format(s, ":%"PRIu16, ofpact_get_OUTPUT(a)->max_len); | |
1838 | } | |
1839 | } | |
1840 | break; | |
1841 | ||
1842 | case OFPACT_CONTROLLER: | |
1843 | controller = ofpact_get_CONTROLLER(a); | |
1844 | if (controller->reason == OFPR_ACTION && | |
1845 | controller->controller_id == 0) { | |
1846 | ds_put_format(s, "CONTROLLER:%"PRIu16, | |
1847 | ofpact_get_CONTROLLER(a)->max_len); | |
1848 | } else { | |
1849 | enum ofp_packet_in_reason reason = controller->reason; | |
1850 | ||
1851 | ds_put_cstr(s, "controller("); | |
1852 | if (reason != OFPR_ACTION) { | |
1853 | ds_put_format(s, "reason=%s,", | |
1854 | ofputil_packet_in_reason_to_string(reason)); | |
1855 | } | |
1856 | if (controller->max_len != UINT16_MAX) { | |
1857 | ds_put_format(s, "max_len=%"PRIu16",", controller->max_len); | |
1858 | } | |
1859 | if (controller->controller_id != 0) { | |
1860 | ds_put_format(s, "id=%"PRIu16",", controller->controller_id); | |
1861 | } | |
1862 | ds_chomp(s, ','); | |
1863 | ds_put_char(s, ')'); | |
1864 | } | |
1865 | break; | |
1866 | ||
1867 | case OFPACT_ENQUEUE: | |
1868 | enqueue = ofpact_get_ENQUEUE(a); | |
1869 | ds_put_format(s, "enqueue:"); | |
1870 | ofputil_format_port(enqueue->port, s); | |
1871 | ds_put_format(s, "q%"PRIu32, enqueue->queue); | |
1872 | break; | |
1873 | ||
1874 | case OFPACT_OUTPUT_REG: | |
1875 | ds_put_cstr(s, "output:"); | |
1876 | mf_format_subfield(&ofpact_get_OUTPUT_REG(a)->src, s); | |
1877 | break; | |
1878 | ||
1879 | case OFPACT_BUNDLE: | |
1880 | bundle_format(ofpact_get_BUNDLE(a), s); | |
1881 | break; | |
1882 | ||
1883 | case OFPACT_SET_VLAN_VID: | |
1884 | ds_put_format(s, "mod_vlan_vid:%"PRIu16, | |
1885 | ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
1886 | break; | |
1887 | ||
1888 | case OFPACT_SET_VLAN_PCP: | |
1889 | ds_put_format(s, "mod_vlan_pcp:%"PRIu8, | |
1890 | ofpact_get_SET_VLAN_PCP(a)->vlan_pcp); | |
1891 | break; | |
1892 | ||
1893 | case OFPACT_STRIP_VLAN: | |
1894 | ds_put_cstr(s, "strip_vlan"); | |
1895 | break; | |
1896 | ||
1897 | case OFPACT_SET_ETH_SRC: | |
1898 | ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT, | |
1899 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_SRC(a)->mac)); | |
1900 | break; | |
1901 | ||
1902 | case OFPACT_SET_ETH_DST: | |
1903 | ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT, | |
1904 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_DST(a)->mac)); | |
1905 | break; | |
1906 | ||
1907 | case OFPACT_SET_IPV4_SRC: | |
1908 | ds_put_format(s, "mod_nw_src:"IP_FMT, | |
1909 | IP_ARGS(&ofpact_get_SET_IPV4_SRC(a)->ipv4)); | |
1910 | break; | |
1911 | ||
1912 | case OFPACT_SET_IPV4_DST: | |
1913 | ds_put_format(s, "mod_nw_dst:"IP_FMT, | |
1914 | IP_ARGS(&ofpact_get_SET_IPV4_DST(a)->ipv4)); | |
1915 | break; | |
1916 | ||
1917 | case OFPACT_SET_IPV4_DSCP: | |
1918 | ds_put_format(s, "mod_nw_tos:%d", ofpact_get_SET_IPV4_DSCP(a)->dscp); | |
1919 | break; | |
1920 | ||
1921 | case OFPACT_SET_L4_SRC_PORT: | |
1922 | ds_put_format(s, "mod_tp_src:%d", ofpact_get_SET_L4_SRC_PORT(a)->port); | |
1923 | break; | |
1924 | ||
1925 | case OFPACT_SET_L4_DST_PORT: | |
1926 | ds_put_format(s, "mod_tp_dst:%d", ofpact_get_SET_L4_DST_PORT(a)->port); | |
1927 | break; | |
1928 | ||
1929 | case OFPACT_REG_MOVE: | |
1930 | nxm_format_reg_move(ofpact_get_REG_MOVE(a), s); | |
1931 | break; | |
1932 | ||
1933 | case OFPACT_REG_LOAD: | |
1934 | nxm_format_reg_load(ofpact_get_REG_LOAD(a), s); | |
1935 | break; | |
1936 | ||
1937 | case OFPACT_DEC_TTL: | |
c2d967a5 | 1938 | print_dec_ttl(ofpact_get_DEC_TTL(a), s); |
f25d0cf3 BP |
1939 | break; |
1940 | ||
1941 | case OFPACT_SET_TUNNEL: | |
1942 | tunnel = ofpact_get_SET_TUNNEL(a); | |
1943 | ds_put_format(s, "set_tunnel%s:%#"PRIx64, | |
1944 | (tunnel->tun_id > UINT32_MAX | |
1945 | || a->compat == OFPUTIL_NXAST_SET_TUNNEL64 ? "64" : ""), | |
1946 | tunnel->tun_id); | |
1947 | break; | |
1948 | ||
1949 | case OFPACT_SET_QUEUE: | |
1950 | ds_put_format(s, "set_queue:%"PRIu32, | |
1951 | ofpact_get_SET_QUEUE(a)->queue_id); | |
1952 | break; | |
1953 | ||
1954 | case OFPACT_POP_QUEUE: | |
1955 | ds_put_cstr(s, "pop_queue"); | |
1956 | break; | |
1957 | ||
1958 | case OFPACT_FIN_TIMEOUT: | |
1959 | print_fin_timeout(ofpact_get_FIN_TIMEOUT(a), s); | |
1960 | break; | |
1961 | ||
1962 | case OFPACT_RESUBMIT: | |
1963 | resubmit = ofpact_get_RESUBMIT(a); | |
1964 | if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) { | |
c6100d92 BP |
1965 | ds_put_cstr(s, "resubmit:"); |
1966 | ofputil_format_port(resubmit->in_port, s); | |
f25d0cf3 BP |
1967 | } else { |
1968 | ds_put_format(s, "resubmit("); | |
1969 | if (resubmit->in_port != OFPP_IN_PORT) { | |
1970 | ofputil_format_port(resubmit->in_port, s); | |
1971 | } | |
1972 | ds_put_char(s, ','); | |
1973 | if (resubmit->table_id != 255) { | |
1974 | ds_put_format(s, "%"PRIu8, resubmit->table_id); | |
1975 | } | |
1976 | ds_put_char(s, ')'); | |
1977 | } | |
1978 | break; | |
1979 | ||
1980 | case OFPACT_LEARN: | |
1981 | learn_format(ofpact_get_LEARN(a), s); | |
1982 | break; | |
1983 | ||
1984 | case OFPACT_MULTIPATH: | |
1985 | multipath_format(ofpact_get_MULTIPATH(a), s); | |
1986 | break; | |
1987 | ||
1988 | case OFPACT_AUTOPATH: | |
1989 | autopath = ofpact_get_AUTOPATH(a); | |
c6100d92 BP |
1990 | ds_put_cstr(s, "autopath("); |
1991 | ofputil_format_port(autopath->port, s); | |
1992 | ds_put_char(s, ','); | |
f25d0cf3 BP |
1993 | mf_format_subfield(&autopath->dst, s); |
1994 | ds_put_char(s, ')'); | |
1995 | break; | |
1996 | ||
1997 | case OFPACT_NOTE: | |
1998 | print_note(ofpact_get_NOTE(a), s); | |
1999 | break; | |
2000 | ||
2001 | case OFPACT_EXIT: | |
2002 | ds_put_cstr(s, "exit"); | |
2003 | break; | |
8dd54666 | 2004 | |
b19e8793 IY |
2005 | case OFPACT_CLEAR_ACTIONS: |
2006 | ds_put_format(s, "%s", | |
2007 | ofpact_instruction_name_from_type( | |
2008 | OVSINST_OFPIT11_CLEAR_ACTIONS)); | |
2009 | break; | |
2010 | ||
4cceacb9 JS |
2011 | case OFPACT_WRITE_METADATA: |
2012 | metadata = ofpact_get_WRITE_METADATA(a); | |
2013 | ds_put_format(s, "%s:%#"PRIx64, | |
2014 | ofpact_instruction_name_from_type( | |
2015 | OVSINST_OFPIT11_WRITE_METADATA), | |
2016 | ntohll(metadata->metadata)); | |
2017 | if (metadata->mask != htonll(UINT64_MAX)) { | |
2018 | ds_put_format(s, "/%#"PRIx64, ntohll(metadata->mask)); | |
2019 | } | |
2020 | break; | |
2021 | ||
8dd54666 IY |
2022 | case OFPACT_GOTO_TABLE: |
2023 | ds_put_format(s, "%s:%"PRIu8, | |
2024 | ofpact_instruction_name_from_type( | |
2025 | OVSINST_OFPIT11_GOTO_TABLE), | |
2026 | ofpact_get_GOTO_TABLE(a)->table_id); | |
2027 | break; | |
f25d0cf3 BP |
2028 | } |
2029 | } | |
2030 | ||
2031 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
2032 | * 'ofpacts' to 'string'. */ | |
2033 | void | |
2034 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
2035 | struct ds *string) | |
2036 | { | |
2037 | ds_put_cstr(string, "actions="); | |
2038 | if (!ofpacts_len) { | |
2039 | ds_put_cstr(string, "drop"); | |
2040 | } else { | |
2041 | const struct ofpact *a; | |
2042 | ||
2043 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
2044 | if (a != ofpacts) { | |
2045 | ds_put_cstr(string, ","); | |
2046 | } | |
8dd54666 | 2047 | |
8dd54666 | 2048 | /* TODO:XXX write-actions */ |
f25d0cf3 BP |
2049 | ofpact_format(a, string); |
2050 | } | |
2051 | } | |
2052 | } | |
2053 | \f | |
2054 | /* Internal use by helpers. */ | |
2055 | ||
2056 | void * | |
2057 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
2058 | { | |
2059 | struct ofpact *ofpact; | |
2060 | ||
2061 | ofpact_pad(ofpacts); | |
2062 | ofpact = ofpacts->l2 = ofpbuf_put_uninit(ofpacts, len); | |
2063 | ofpact_init(ofpact, type, len); | |
2064 | return ofpact; | |
2065 | } | |
2066 | ||
2067 | void | |
2068 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
2069 | { | |
2070 | memset(ofpact, 0, len); | |
2071 | ofpact->type = type; | |
2072 | ofpact->compat = OFPUTIL_ACTION_INVALID; | |
2073 | ofpact->len = len; | |
2074 | } | |
2075 | \f | |
2076 | /* Updates 'ofpact->len' to the number of bytes in the tail of 'ofpacts' | |
2077 | * starting at 'ofpact'. | |
2078 | * | |
2079 | * This is the correct way to update a variable-length ofpact's length after | |
2080 | * adding the variable-length part of the payload. (See the large comment | |
2081 | * near the end of ofp-actions.h for more information.) */ | |
2082 | void | |
2083 | ofpact_update_len(struct ofpbuf *ofpacts, struct ofpact *ofpact) | |
2084 | { | |
2085 | assert(ofpact == ofpacts->l2); | |
2086 | ofpact->len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; | |
2087 | } | |
2088 | ||
2089 | /* Pads out 'ofpacts' to a multiple of OFPACT_ALIGNTO bytes in length. Each | |
2090 | * ofpact_put_<ENUM>() calls this function automatically beforehand, but the | |
2091 | * client must call this itself after adding the final ofpact to an array of | |
2092 | * them. | |
2093 | * | |
2094 | * (The consequences of failing to call this function are probably not dire. | |
2095 | * OFPACT_FOR_EACH will calculate a pointer beyond the end of the ofpacts, but | |
2096 | * not dereference it. That's undefined behavior, technically, but it will not | |
2097 | * cause a real problem on common systems. Still, it seems better to call | |
2098 | * it.) */ | |
2099 | void | |
2100 | ofpact_pad(struct ofpbuf *ofpacts) | |
2101 | { | |
2102 | unsigned int rem = ofpacts->size % OFPACT_ALIGNTO; | |
2103 | if (rem) { | |
2104 | ofpbuf_put_zeros(ofpacts, OFPACT_ALIGNTO - rem); | |
2105 | } | |
2106 | } | |
f5c45121 SH |
2107 | |
2108 | void | |
2109 | ofpact_set_field_init(struct ofpact_reg_load *load, const struct mf_field *mf, | |
2110 | const void *src) | |
2111 | { | |
2112 | load->ofpact.compat = OFPUTIL_OFPAT12_SET_FIELD; | |
2113 | load->dst.field = mf; | |
2114 | load->dst.ofs = 0; | |
2115 | load->dst.n_bits = mf->n_bits; | |
2116 | bitwise_copy(src, mf->n_bytes, load->dst.ofs, | |
2117 | &load->subvalue, sizeof load->subvalue, 0, mf->n_bits); | |
2118 | } |