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