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f25d0cf3 | 1 | /* |
269dc90a | 2 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 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 | ||
e45e72f1 JR |
38 | union ofp_action { |
39 | ovs_be16 type; | |
40 | struct ofp_action_header header; | |
41 | struct ofp_action_vendor_header vendor; | |
42 | struct ofp10_action_output output10; | |
43 | struct ofp_action_vlan_vid vlan_vid; | |
44 | struct ofp_action_vlan_pcp vlan_pcp; | |
45 | struct ofp_action_nw_addr nw_addr; | |
46 | struct ofp_action_nw_tos nw_tos; | |
ff14eb7a | 47 | struct ofp11_action_nw_ecn nw_ecn; |
0c20dbe4 | 48 | struct ofp11_action_nw_ttl nw_ttl; |
e45e72f1 | 49 | struct ofp_action_tp_port tp_port; |
dba70df0 BP |
50 | struct ofp_action_dl_addr dl_addr; |
51 | struct ofp10_action_enqueue enqueue; | |
52 | struct ofp11_action_output ofp11_output; | |
53 | struct ofp11_action_push push; | |
54 | struct ofp11_action_pop_mpls ofp11_pop_mpls; | |
55 | struct ofp11_action_set_queue ofp11_set_queue; | |
097d4939 JR |
56 | struct ofp11_action_mpls_label ofp11_mpls_label; |
57 | struct ofp11_action_mpls_tc ofp11_mpls_tc; | |
dba70df0 BP |
58 | struct ofp11_action_mpls_ttl ofp11_mpls_ttl; |
59 | struct ofp11_action_group group; | |
60 | struct ofp12_action_set_field set_field; | |
61 | struct nx_action_header nxa_header; | |
62 | struct nx_action_resubmit resubmit; | |
63 | struct nx_action_set_tunnel set_tunnel; | |
64 | struct nx_action_set_tunnel64 set_tunnel64; | |
65 | struct nx_action_write_metadata write_metadata; | |
66 | struct nx_action_set_queue set_queue; | |
67 | struct nx_action_reg_move reg_move; | |
68 | struct nx_action_reg_load reg_load; | |
69 | struct nx_action_stack stack; | |
70 | struct nx_action_note note; | |
71 | struct nx_action_multipath multipath; | |
72 | struct nx_action_bundle bundle; | |
73 | struct nx_action_output_reg output_reg; | |
74 | struct nx_action_cnt_ids cnt_ids; | |
75 | struct nx_action_fin_timeout fin_timeout; | |
76 | struct nx_action_controller controller; | |
77 | struct nx_action_push_mpls push_mpls; | |
78 | struct nx_action_mpls_ttl mpls_ttl; | |
79 | struct nx_action_pop_mpls pop_mpls; | |
80 | struct nx_action_sample sample; | |
81 | struct nx_action_learn learn; | |
097d4939 JR |
82 | struct nx_action_mpls_label mpls_label; |
83 | struct nx_action_mpls_tc mpls_tc; | |
e45e72f1 | 84 | }; |
e45e72f1 | 85 | |
f25d0cf3 | 86 | static enum ofperr |
d01c980f | 87 | output_from_openflow10(const struct ofp10_action_output *oao, |
f25d0cf3 BP |
88 | struct ofpbuf *out) |
89 | { | |
90 | struct ofpact_output *output; | |
91 | ||
92 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 93 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
94 | output->max_len = ntohs(oao->max_len); |
95 | ||
57ad4e9e | 96 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
97 | } |
98 | ||
99 | static enum ofperr | |
31a9e63f | 100 | enqueue_from_openflow10(const struct ofp10_action_enqueue *oae, |
f25d0cf3 BP |
101 | struct ofpbuf *out) |
102 | { | |
103 | struct ofpact_enqueue *enqueue; | |
104 | ||
105 | enqueue = ofpact_put_ENQUEUE(out); | |
4e022ec0 | 106 | enqueue->port = u16_to_ofp(ntohs(oae->port)); |
f25d0cf3 | 107 | enqueue->queue = ntohl(oae->queue_id); |
4e022ec0 AW |
108 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) |
109 | && enqueue->port != OFPP_IN_PORT | |
f25d0cf3 BP |
110 | && enqueue->port != OFPP_LOCAL) { |
111 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
112 | } | |
113 | return 0; | |
114 | } | |
115 | ||
116 | static void | |
117 | resubmit_from_openflow(const struct nx_action_resubmit *nar, | |
118 | struct ofpbuf *out) | |
119 | { | |
120 | struct ofpact_resubmit *resubmit; | |
121 | ||
122 | resubmit = ofpact_put_RESUBMIT(out); | |
123 | resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT; | |
4e022ec0 | 124 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); |
f25d0cf3 BP |
125 | resubmit->table_id = 0xff; |
126 | } | |
127 | ||
128 | static enum ofperr | |
129 | resubmit_table_from_openflow(const struct nx_action_resubmit *nar, | |
130 | struct ofpbuf *out) | |
131 | { | |
132 | struct ofpact_resubmit *resubmit; | |
133 | ||
134 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { | |
135 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
136 | } | |
137 | ||
138 | resubmit = ofpact_put_RESUBMIT(out); | |
139 | resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT_TABLE; | |
4e022ec0 | 140 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); |
f25d0cf3 BP |
141 | resubmit->table_id = nar->table; |
142 | return 0; | |
143 | } | |
144 | ||
145 | static enum ofperr | |
146 | output_reg_from_openflow(const struct nx_action_output_reg *naor, | |
147 | struct ofpbuf *out) | |
148 | { | |
149 | struct ofpact_output_reg *output_reg; | |
150 | ||
151 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { | |
152 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
153 | } | |
154 | ||
155 | output_reg = ofpact_put_OUTPUT_REG(out); | |
156 | output_reg->src.field = mf_from_nxm_header(ntohl(naor->src)); | |
157 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
158 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
159 | output_reg->max_len = ntohs(naor->max_len); | |
160 | ||
161 | return mf_check_src(&output_reg->src, NULL); | |
162 | } | |
163 | ||
164 | static void | |
165 | fin_timeout_from_openflow(const struct nx_action_fin_timeout *naft, | |
166 | struct ofpbuf *out) | |
167 | { | |
168 | struct ofpact_fin_timeout *oft; | |
169 | ||
170 | oft = ofpact_put_FIN_TIMEOUT(out); | |
171 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
172 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
173 | } | |
174 | ||
175 | static void | |
176 | controller_from_openflow(const struct nx_action_controller *nac, | |
177 | struct ofpbuf *out) | |
178 | { | |
179 | struct ofpact_controller *oc; | |
180 | ||
181 | oc = ofpact_put_CONTROLLER(out); | |
182 | oc->max_len = ntohs(nac->max_len); | |
183 | oc->controller_id = ntohs(nac->controller_id); | |
184 | oc->reason = nac->reason; | |
185 | } | |
186 | ||
4cceacb9 JS |
187 | static enum ofperr |
188 | metadata_from_nxast(const struct nx_action_write_metadata *nawm, | |
189 | struct ofpbuf *out) | |
190 | { | |
191 | struct ofpact_metadata *om; | |
192 | ||
193 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
194 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
195 | } | |
196 | ||
197 | om = ofpact_put_WRITE_METADATA(out); | |
198 | om->metadata = nawm->metadata; | |
199 | om->mask = nawm->mask; | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
f25d0cf3 BP |
204 | static void |
205 | note_from_openflow(const struct nx_action_note *nan, struct ofpbuf *out) | |
206 | { | |
207 | struct ofpact_note *note; | |
208 | unsigned int length; | |
209 | ||
210 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
211 | note = ofpact_put(out, OFPACT_NOTE, | |
212 | offsetof(struct ofpact_note, data) + length); | |
213 | note->length = length; | |
214 | memcpy(note->data, nan->note, length); | |
215 | } | |
216 | ||
c2d967a5 | 217 | static enum ofperr |
7bcb1506 | 218 | dec_ttl_from_openflow(struct ofpbuf *out, enum ofputil_action_code compat) |
c2d967a5 MM |
219 | { |
220 | uint16_t id = 0; | |
221 | struct ofpact_cnt_ids *ids; | |
222 | enum ofperr error = 0; | |
223 | ||
224 | ids = ofpact_put_DEC_TTL(out); | |
7bcb1506 | 225 | ids->ofpact.compat = compat; |
c2d967a5 MM |
226 | ids->n_controllers = 1; |
227 | ofpbuf_put(out, &id, sizeof id); | |
228 | ids = out->l2; | |
229 | ofpact_update_len(out, &ids->ofpact); | |
230 | return error; | |
231 | } | |
232 | ||
233 | static enum ofperr | |
234 | dec_ttl_cnt_ids_from_openflow(const struct nx_action_cnt_ids *nac_ids, | |
e3f8f887 | 235 | struct ofpbuf *out) |
c2d967a5 MM |
236 | { |
237 | struct ofpact_cnt_ids *ids; | |
238 | size_t ids_size; | |
239 | int i; | |
240 | ||
241 | ids = ofpact_put_DEC_TTL(out); | |
242 | ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS; | |
243 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
244 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
245 | ||
246 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
247 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
248 | } | |
249 | ||
250 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
34582733 AS |
251 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" bytes " |
252 | "allocated for controller ids. %"PRIuSIZE" bytes are required for " | |
c2d967a5 MM |
253 | "%"PRIu16" controllers.", ids_size, |
254 | ids->n_controllers * sizeof(ovs_be16), ids->n_controllers); | |
255 | return OFPERR_OFPBAC_BAD_LEN; | |
256 | } | |
257 | ||
258 | for (i = 0; i < ids->n_controllers; i++) { | |
259 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
260 | ofpbuf_put(out, &id, sizeof id); | |
e655542c | 261 | ids = out->l2; |
c2d967a5 MM |
262 | } |
263 | ||
c2d967a5 MM |
264 | ofpact_update_len(out, &ids->ofpact); |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
29089a54 RL |
269 | static enum ofperr |
270 | sample_from_openflow(const struct nx_action_sample *nas, | |
271 | struct ofpbuf *out) | |
272 | { | |
273 | struct ofpact_sample *sample; | |
274 | ||
275 | sample = ofpact_put_SAMPLE(out); | |
276 | sample->probability = ntohs(nas->probability); | |
277 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
278 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
279 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
280 | ||
281 | if (sample->probability == 0) { | |
282 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
283 | } | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
a7a2d006 | 288 | static enum ofperr |
269dc90a | 289 | push_mpls_from_openflow(ovs_be16 ethertype, struct ofpbuf *out) |
a7a2d006 JS |
290 | { |
291 | struct ofpact_push_mpls *oam; | |
292 | ||
293 | if (!eth_type_mpls(ethertype)) { | |
294 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
295 | } | |
296 | oam = ofpact_put_PUSH_MPLS(out); | |
297 | oam->ethertype = ethertype; | |
a7a2d006 JS |
298 | |
299 | return 0; | |
300 | } | |
301 | ||
f25d0cf3 BP |
302 | static enum ofperr |
303 | decode_nxast_action(const union ofp_action *a, enum ofputil_action_code *code) | |
304 | { | |
dba70df0 | 305 | const struct nx_action_header *nah = &a->nxa_header; |
f25d0cf3 BP |
306 | uint16_t len = ntohs(a->header.len); |
307 | ||
308 | if (len < sizeof(struct nx_action_header)) { | |
309 | return OFPERR_OFPBAC_BAD_LEN; | |
310 | } else if (a->vendor.vendor != CONSTANT_HTONL(NX_VENDOR_ID)) { | |
311 | return OFPERR_OFPBAC_BAD_VENDOR; | |
312 | } | |
313 | ||
314 | switch (nah->subtype) { | |
315 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
316 | case CONSTANT_HTONS(ENUM): \ | |
317 | if (EXTENSIBLE \ | |
318 | ? len >= sizeof(struct STRUCT) \ | |
319 | : len == sizeof(struct STRUCT)) { \ | |
320 | *code = OFPUTIL_##ENUM; \ | |
321 | return 0; \ | |
322 | } else { \ | |
323 | return OFPERR_OFPBAC_BAD_LEN; \ | |
324 | } \ | |
428b2edd | 325 | OVS_NOT_REACHED(); |
f25d0cf3 BP |
326 | #include "ofp-util.def" |
327 | ||
328 | case CONSTANT_HTONS(NXAST_SNAT__OBSOLETE): | |
329 | case CONSTANT_HTONS(NXAST_DROP_SPOOFED_ARP__OBSOLETE): | |
330 | default: | |
331 | return OFPERR_OFPBAC_BAD_TYPE; | |
332 | } | |
333 | } | |
334 | ||
335 | /* Parses 'a' to determine its type. On success stores the correct type into | |
336 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
337 | * '*code' is indeterminate. | |
338 | * | |
339 | * The caller must have already verified that 'a''s length is potentially | |
dba70df0 BP |
340 | * correct (that is, a->header.len is nonzero and a multiple of |
341 | * OFP_ACTION_ALIGN and no longer than the amount of space allocated to 'a'). | |
f25d0cf3 BP |
342 | * |
343 | * This function verifies that 'a''s length is correct for the type of action | |
344 | * that it represents. */ | |
345 | static enum ofperr | |
346 | decode_openflow10_action(const union ofp_action *a, | |
347 | enum ofputil_action_code *code) | |
348 | { | |
349 | switch (a->type) { | |
350 | case CONSTANT_HTONS(OFPAT10_VENDOR): | |
351 | return decode_nxast_action(a, code); | |
352 | ||
353 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \ | |
354 | case CONSTANT_HTONS(ENUM): \ | |
355 | if (a->header.len == htons(sizeof(struct STRUCT))) { \ | |
356 | *code = OFPUTIL_##ENUM; \ | |
357 | return 0; \ | |
358 | } else { \ | |
359 | return OFPERR_OFPBAC_BAD_LEN; \ | |
360 | } \ | |
361 | break; | |
362 | #include "ofp-util.def" | |
363 | ||
364 | default: | |
365 | return OFPERR_OFPBAC_BAD_TYPE; | |
366 | } | |
367 | } | |
368 | ||
369 | static enum ofperr | |
d01c980f BP |
370 | ofpact_from_nxast(const union ofp_action *a, enum ofputil_action_code code, |
371 | struct ofpbuf *out) | |
f25d0cf3 | 372 | { |
f25d0cf3 | 373 | struct ofpact_tunnel *tunnel; |
d01c980f | 374 | enum ofperr error = 0; |
f25d0cf3 BP |
375 | |
376 | switch (code) { | |
377 | case OFPUTIL_ACTION_INVALID: | |
d01c980f | 378 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: |
3ddcaf2d | 379 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
9c4dbc1c | 380 | #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f | 381 | #include "ofp-util.def" |
428b2edd | 382 | OVS_NOT_REACHED(); |
f25d0cf3 | 383 | |
f25d0cf3 | 384 | case OFPUTIL_NXAST_RESUBMIT: |
dba70df0 | 385 | resubmit_from_openflow(&a->resubmit, out); |
f25d0cf3 BP |
386 | break; |
387 | ||
388 | case OFPUTIL_NXAST_SET_TUNNEL: | |
f25d0cf3 BP |
389 | tunnel = ofpact_put_SET_TUNNEL(out); |
390 | tunnel->ofpact.compat = code; | |
dba70df0 | 391 | tunnel->tun_id = ntohl(a->set_tunnel.tun_id); |
f25d0cf3 BP |
392 | break; |
393 | ||
4cceacb9 | 394 | case OFPUTIL_NXAST_WRITE_METADATA: |
dba70df0 | 395 | error = metadata_from_nxast(&a->write_metadata, out); |
4cceacb9 JS |
396 | break; |
397 | ||
f25d0cf3 | 398 | case OFPUTIL_NXAST_SET_QUEUE: |
dba70df0 | 399 | ofpact_put_SET_QUEUE(out)->queue_id = ntohl(a->set_queue.queue_id); |
f25d0cf3 BP |
400 | break; |
401 | ||
402 | case OFPUTIL_NXAST_POP_QUEUE: | |
403 | ofpact_put_POP_QUEUE(out); | |
404 | break; | |
405 | ||
406 | case OFPUTIL_NXAST_REG_MOVE: | |
dba70df0 | 407 | error = nxm_reg_move_from_openflow(&a->reg_move, out); |
f25d0cf3 BP |
408 | break; |
409 | ||
410 | case OFPUTIL_NXAST_REG_LOAD: | |
dba70df0 | 411 | error = nxm_reg_load_from_openflow(&a->reg_load, out); |
f25d0cf3 BP |
412 | break; |
413 | ||
bd85dac1 | 414 | case OFPUTIL_NXAST_STACK_PUSH: |
dba70df0 | 415 | error = nxm_stack_push_from_openflow(&a->stack, out); |
bd85dac1 AZ |
416 | break; |
417 | ||
418 | case OFPUTIL_NXAST_STACK_POP: | |
dba70df0 | 419 | error = nxm_stack_pop_from_openflow(&a->stack, out); |
bd85dac1 AZ |
420 | break; |
421 | ||
f25d0cf3 | 422 | case OFPUTIL_NXAST_NOTE: |
dba70df0 | 423 | note_from_openflow(&a->note, out); |
f25d0cf3 BP |
424 | break; |
425 | ||
426 | case OFPUTIL_NXAST_SET_TUNNEL64: | |
f25d0cf3 BP |
427 | tunnel = ofpact_put_SET_TUNNEL(out); |
428 | tunnel->ofpact.compat = code; | |
dba70df0 | 429 | tunnel->tun_id = ntohll(a->set_tunnel64.tun_id); |
f25d0cf3 BP |
430 | break; |
431 | ||
432 | case OFPUTIL_NXAST_MULTIPATH: | |
dba70df0 | 433 | error = multipath_from_openflow(&a->multipath, |
f25d0cf3 BP |
434 | ofpact_put_MULTIPATH(out)); |
435 | break; | |
436 | ||
f25d0cf3 BP |
437 | case OFPUTIL_NXAST_BUNDLE: |
438 | case OFPUTIL_NXAST_BUNDLE_LOAD: | |
dba70df0 | 439 | error = bundle_from_openflow(&a->bundle, out); |
f25d0cf3 BP |
440 | break; |
441 | ||
442 | case OFPUTIL_NXAST_OUTPUT_REG: | |
dba70df0 | 443 | error = output_reg_from_openflow(&a->output_reg, out); |
f25d0cf3 BP |
444 | break; |
445 | ||
446 | case OFPUTIL_NXAST_RESUBMIT_TABLE: | |
dba70df0 | 447 | error = resubmit_table_from_openflow(&a->resubmit, out); |
f25d0cf3 BP |
448 | break; |
449 | ||
450 | case OFPUTIL_NXAST_LEARN: | |
dba70df0 | 451 | error = learn_from_openflow(&a->learn, out); |
f25d0cf3 BP |
452 | break; |
453 | ||
454 | case OFPUTIL_NXAST_EXIT: | |
455 | ofpact_put_EXIT(out); | |
456 | break; | |
457 | ||
458 | case OFPUTIL_NXAST_DEC_TTL: | |
7bcb1506 | 459 | error = dec_ttl_from_openflow(out, code); |
c2d967a5 MM |
460 | break; |
461 | ||
462 | case OFPUTIL_NXAST_DEC_TTL_CNT_IDS: | |
dba70df0 | 463 | error = dec_ttl_cnt_ids_from_openflow(&a->cnt_ids, out); |
f25d0cf3 BP |
464 | break; |
465 | ||
466 | case OFPUTIL_NXAST_FIN_TIMEOUT: | |
dba70df0 | 467 | fin_timeout_from_openflow(&a->fin_timeout, out); |
f25d0cf3 BP |
468 | break; |
469 | ||
470 | case OFPUTIL_NXAST_CONTROLLER: | |
dba70df0 | 471 | controller_from_openflow(&a->controller, out); |
f25d0cf3 | 472 | break; |
b02475c5 | 473 | |
dba70df0 | 474 | case OFPUTIL_NXAST_PUSH_MPLS: |
269dc90a | 475 | error = push_mpls_from_openflow(a->push_mpls.ethertype, out); |
b02475c5 | 476 | break; |
b02475c5 | 477 | |
097d4939 JR |
478 | case OFPUTIL_NXAST_SET_MPLS_LABEL: |
479 | ofpact_put_SET_MPLS_LABEL(out)->label = a->mpls_label.label; | |
480 | break; | |
481 | ||
482 | case OFPUTIL_NXAST_SET_MPLS_TC: | |
483 | ofpact_put_SET_MPLS_TC(out)->tc = a->mpls_tc.tc; | |
484 | break; | |
485 | ||
dba70df0 BP |
486 | case OFPUTIL_NXAST_SET_MPLS_TTL: |
487 | ofpact_put_SET_MPLS_TTL(out)->ttl = a->mpls_ttl.ttl; | |
0f3f3c3d | 488 | break; |
0f3f3c3d | 489 | |
b676167a SH |
490 | case OFPUTIL_NXAST_DEC_MPLS_TTL: |
491 | ofpact_put_DEC_MPLS_TTL(out); | |
492 | break; | |
493 | ||
dba70df0 BP |
494 | case OFPUTIL_NXAST_POP_MPLS: |
495 | if (eth_type_mpls(a->pop_mpls.ethertype)) { | |
b02475c5 SH |
496 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
497 | } | |
dba70df0 | 498 | ofpact_put_POP_MPLS(out)->ethertype = a->pop_mpls.ethertype; |
b02475c5 | 499 | break; |
29089a54 RL |
500 | |
501 | case OFPUTIL_NXAST_SAMPLE: | |
dba70df0 | 502 | error = sample_from_openflow(&a->sample, out); |
29089a54 | 503 | break; |
f25d0cf3 BP |
504 | } |
505 | ||
506 | return error; | |
507 | } | |
508 | ||
d01c980f | 509 | static enum ofperr |
e3f8f887 JR |
510 | ofpact_from_openflow10(const union ofp_action *a, |
511 | enum ofp_version version OVS_UNUSED, | |
512 | struct ofpbuf *out) | |
d01c980f BP |
513 | { |
514 | enum ofputil_action_code code; | |
515 | enum ofperr error; | |
ca287d20 JR |
516 | struct ofpact_vlan_vid *vlan_vid; |
517 | struct ofpact_vlan_pcp *vlan_pcp; | |
d01c980f BP |
518 | |
519 | error = decode_openflow10_action(a, &code); | |
520 | if (error) { | |
521 | return error; | |
522 | } | |
523 | ||
524 | switch (code) { | |
525 | case OFPUTIL_ACTION_INVALID: | |
3ddcaf2d | 526 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
9c4dbc1c | 527 | #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f | 528 | #include "ofp-util.def" |
428b2edd | 529 | OVS_NOT_REACHED(); |
d01c980f BP |
530 | |
531 | case OFPUTIL_OFPAT10_OUTPUT: | |
532 | return output_from_openflow10(&a->output10, out); | |
533 | ||
534 | case OFPUTIL_OFPAT10_SET_VLAN_VID: | |
535 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
536 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
537 | } | |
ca287d20 JR |
538 | vlan_vid = ofpact_put_SET_VLAN_VID(out); |
539 | vlan_vid->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
540 | vlan_vid->push_vlan_if_needed = true; | |
541 | vlan_vid->ofpact.compat = code; | |
d01c980f BP |
542 | break; |
543 | ||
544 | case OFPUTIL_OFPAT10_SET_VLAN_PCP: | |
545 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
546 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
547 | } | |
ca287d20 JR |
548 | vlan_pcp = ofpact_put_SET_VLAN_PCP(out); |
549 | vlan_pcp->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
550 | vlan_pcp->push_vlan_if_needed = true; | |
551 | vlan_pcp->ofpact.compat = code; | |
d01c980f BP |
552 | break; |
553 | ||
554 | case OFPUTIL_OFPAT10_STRIP_VLAN: | |
64fcc073 | 555 | ofpact_put_STRIP_VLAN(out)->ofpact.compat = code; |
d01c980f BP |
556 | break; |
557 | ||
558 | case OFPUTIL_OFPAT10_SET_DL_SRC: | |
dba70df0 BP |
559 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, a->dl_addr.dl_addr, |
560 | ETH_ADDR_LEN); | |
d01c980f BP |
561 | break; |
562 | ||
563 | case OFPUTIL_OFPAT10_SET_DL_DST: | |
dba70df0 BP |
564 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, a->dl_addr.dl_addr, |
565 | ETH_ADDR_LEN); | |
d01c980f BP |
566 | break; |
567 | ||
568 | case OFPUTIL_OFPAT10_SET_NW_SRC: | |
569 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
570 | break; | |
571 | ||
572 | case OFPUTIL_OFPAT10_SET_NW_DST: | |
573 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
574 | break; | |
575 | ||
576 | case OFPUTIL_OFPAT10_SET_NW_TOS: | |
577 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
578 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
579 | } | |
04f01c24 | 580 | ofpact_put_SET_IP_DSCP(out)->dscp = a->nw_tos.nw_tos; |
d01c980f BP |
581 | break; |
582 | ||
583 | case OFPUTIL_OFPAT10_SET_TP_SRC: | |
584 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
585 | break; | |
586 | ||
587 | case OFPUTIL_OFPAT10_SET_TP_DST: | |
588 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
589 | ||
590 | break; | |
591 | ||
592 | case OFPUTIL_OFPAT10_ENQUEUE: | |
dba70df0 | 593 | error = enqueue_from_openflow10(&a->enqueue, out); |
d01c980f BP |
594 | break; |
595 | ||
596 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: | |
597 | #include "ofp-util.def" | |
598 | return ofpact_from_nxast(a, code, out); | |
599 | } | |
600 | ||
601 | return error; | |
602 | } | |
603 | ||
e3f8f887 JR |
604 | static enum ofperr ofpact_from_openflow11(const union ofp_action *, |
605 | enum ofp_version, | |
606 | struct ofpbuf *out); | |
607 | ||
f25d0cf3 BP |
608 | static inline union ofp_action * |
609 | action_next(const union ofp_action *a) | |
610 | { | |
611 | return ((union ofp_action *) (void *) | |
612 | ((uint8_t *) a + ntohs(a->header.len))); | |
613 | } | |
614 | ||
615 | static inline bool | |
dba70df0 | 616 | action_is_valid(const union ofp_action *a, size_t max_actions) |
f25d0cf3 BP |
617 | { |
618 | uint16_t len = ntohs(a->header.len); | |
619 | return (!(len % OFP_ACTION_ALIGN) | |
dba70df0 BP |
620 | && len >= OFP_ACTION_ALIGN |
621 | && len / OFP_ACTION_ALIGN <= max_actions); | |
f25d0cf3 BP |
622 | } |
623 | ||
624 | /* This macro is careful to check for actions with bad lengths. */ | |
dba70df0 BP |
625 | #define ACTION_FOR_EACH(ITER, LEFT, ACTIONS, MAX_ACTIONS) \ |
626 | for ((ITER) = (ACTIONS), (LEFT) = (MAX_ACTIONS); \ | |
f25d0cf3 | 627 | (LEFT) > 0 && action_is_valid(ITER, LEFT); \ |
dba70df0 | 628 | ((LEFT) -= ntohs((ITER)->header.len) / OFP_ACTION_ALIGN, \ |
f25d0cf3 BP |
629 | (ITER) = action_next(ITER))) |
630 | ||
699dddf1 | 631 | static void |
dba70df0 BP |
632 | log_bad_action(const union ofp_action *actions, size_t max_actions, |
633 | const union ofp_action *bad_action, enum ofperr error) | |
699dddf1 BP |
634 | { |
635 | if (!VLOG_DROP_WARN(&rl)) { | |
636 | struct ds s; | |
637 | ||
638 | ds_init(&s); | |
dba70df0 | 639 | ds_put_hex_dump(&s, actions, max_actions * OFP_ACTION_ALIGN, 0, false); |
34582733 | 640 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
dba70df0 BP |
641 | (char *)bad_action - (char *)actions, |
642 | ofperr_get_name(error), ds_cstr(&s)); | |
699dddf1 BP |
643 | ds_destroy(&s); |
644 | } | |
645 | } | |
646 | ||
f25d0cf3 | 647 | static enum ofperr |
0300caaf | 648 | ofpacts_from_openflow(const union ofp_action *in, size_t n_in, |
e3f8f887 | 649 | enum ofp_version version, struct ofpbuf *out) |
f25d0cf3 BP |
650 | { |
651 | const union ofp_action *a; | |
652 | size_t left; | |
653 | ||
e3f8f887 JR |
654 | enum ofperr (*ofpact_from_openflow)(const union ofp_action *a, |
655 | enum ofp_version, | |
656 | struct ofpbuf *out) = | |
657 | (version == OFP10_VERSION) ? | |
658 | ofpact_from_openflow10 : ofpact_from_openflow11; | |
659 | ||
f25d0cf3 | 660 | ACTION_FOR_EACH (a, left, in, n_in) { |
e3f8f887 | 661 | enum ofperr error = ofpact_from_openflow(a, version, out); |
f25d0cf3 | 662 | if (error) { |
dba70df0 | 663 | log_bad_action(in, n_in, a, error); |
f25d0cf3 BP |
664 | return error; |
665 | } | |
666 | } | |
667 | if (left) { | |
699dddf1 | 668 | enum ofperr error = OFPERR_OFPBAC_BAD_LEN; |
dba70df0 | 669 | log_bad_action(in, n_in, a, error); |
699dddf1 | 670 | return error; |
f25d0cf3 BP |
671 | } |
672 | ||
673 | ofpact_pad(out); | |
674 | return 0; | |
675 | } | |
676 | ||
e3f8f887 JR |
677 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the |
678 | * front of 'openflow' into ofpacts. On success, replaces any existing content | |
679 | * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'. | |
680 | * Returns 0 if successful, otherwise an OpenFlow error. | |
681 | * | |
682 | * Actions are processed according to their OpenFlow version which | |
683 | * is provided in the 'version' parameter. | |
684 | * | |
685 | * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in | |
686 | * instructions, so you should call ofpacts_pull_openflow_instructions() | |
687 | * instead of this function. | |
688 | * | |
689 | * The parsed actions are valid generically, but they may not be valid in a | |
690 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
691 | * generically, but specific datapaths may only support port numbers in a | |
692 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
693 | * valid in a specific context. */ | |
694 | enum ofperr | |
695 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
696 | unsigned int actions_len, | |
697 | enum ofp_version version, | |
698 | struct ofpbuf *ofpacts) { | |
f25d0cf3 BP |
699 | const union ofp_action *actions; |
700 | enum ofperr error; | |
701 | ||
702 | ofpbuf_clear(ofpacts); | |
703 | ||
704 | if (actions_len % OFP_ACTION_ALIGN != 0) { | |
705 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
706 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
707 | return OFPERR_OFPBRC_BAD_LEN; | |
708 | } | |
709 | ||
710 | actions = ofpbuf_try_pull(openflow, actions_len); | |
711 | if (actions == NULL) { | |
712 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
34582733 | 713 | "remaining message length (%"PRIuSIZE")", |
f25d0cf3 BP |
714 | actions_len, openflow->size); |
715 | return OFPERR_OFPBRC_BAD_LEN; | |
716 | } | |
717 | ||
e3f8f887 JR |
718 | error = ofpacts_from_openflow(actions, actions_len / OFP_ACTION_ALIGN, |
719 | version, ofpacts); | |
4cceacb9 JS |
720 | if (error) { |
721 | ofpbuf_clear(ofpacts); | |
722 | return error; | |
723 | } | |
724 | ||
725 | error = ofpacts_verify(ofpacts->data, ofpacts->size); | |
f25d0cf3 BP |
726 | if (error) { |
727 | ofpbuf_clear(ofpacts); | |
728 | } | |
d01c980f BP |
729 | return error; |
730 | } | |
731 | ||
d01c980f BP |
732 | \f |
733 | /* OpenFlow 1.1 actions. */ | |
734 | ||
735 | /* Parses 'a' to determine its type. On success stores the correct type into | |
736 | * '*code' and returns 0. On failure returns an OFPERR_* error code and | |
737 | * '*code' is indeterminate. | |
738 | * | |
739 | * The caller must have already verified that 'a''s length is potentially | |
dba70df0 BP |
740 | * correct (that is, a->header.len is nonzero and a multiple of |
741 | * OFP_ACTION_ALIGN and no longer than the amount of space allocated to 'a'). | |
d01c980f BP |
742 | * |
743 | * This function verifies that 'a''s length is correct for the type of action | |
744 | * that it represents. */ | |
745 | static enum ofperr | |
746 | decode_openflow11_action(const union ofp_action *a, | |
747 | enum ofputil_action_code *code) | |
748 | { | |
3ddcaf2d BP |
749 | uint16_t len; |
750 | ||
d01c980f BP |
751 | switch (a->type) { |
752 | case CONSTANT_HTONS(OFPAT11_EXPERIMENTER): | |
753 | return decode_nxast_action(a, code); | |
754 | ||
3ddcaf2d BP |
755 | #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
756 | case CONSTANT_HTONS(ENUM): \ | |
757 | len = ntohs(a->header.len); \ | |
758 | if (EXTENSIBLE \ | |
759 | ? len >= sizeof(struct STRUCT) \ | |
760 | : len == sizeof(struct STRUCT)) { \ | |
761 | *code = OFPUTIL_##ENUM; \ | |
762 | return 0; \ | |
763 | } else { \ | |
764 | return OFPERR_OFPBAC_BAD_LEN; \ | |
765 | } \ | |
428b2edd | 766 | OVS_NOT_REACHED(); |
d01c980f BP |
767 | #include "ofp-util.def" |
768 | ||
769 | default: | |
770 | return OFPERR_OFPBAC_BAD_TYPE; | |
771 | } | |
772 | } | |
773 | ||
b2dd70be JR |
774 | static enum ofperr |
775 | set_field_from_openflow(const struct ofp12_action_set_field *oasf, | |
776 | struct ofpbuf *ofpacts) | |
777 | { | |
778 | uint16_t oasf_len = ntohs(oasf->len); | |
779 | uint32_t oxm_header = ntohl(oasf->dst); | |
780 | uint8_t oxm_length = NXM_LENGTH(oxm_header); | |
781 | struct ofpact_set_field *sf; | |
782 | const struct mf_field *mf; | |
783 | ||
784 | /* ofp12_action_set_field is padded to 64 bits by zero */ | |
785 | if (oasf_len != ROUND_UP(sizeof *oasf + oxm_length, 8)) { | |
786 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
787 | } | |
788 | if (!is_all_zeros((const uint8_t *)oasf + sizeof *oasf + oxm_length, | |
789 | oasf_len - oxm_length - sizeof *oasf)) { | |
790 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
791 | } | |
792 | ||
793 | if (NXM_HASMASK(oxm_header)) { | |
794 | return OFPERR_OFPBAC_BAD_SET_TYPE; | |
795 | } | |
796 | mf = mf_from_nxm_header(oxm_header); | |
797 | if (!mf) { | |
798 | return OFPERR_OFPBAC_BAD_SET_TYPE; | |
799 | } | |
800 | ovs_assert(mf->n_bytes == oxm_length); | |
801 | /* oxm_length is now validated to be compatible with mf_value. */ | |
802 | if (!mf->writable) { | |
803 | VLOG_WARN_RL(&rl, "destination field %s is not writable", mf->name); | |
804 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
805 | } | |
806 | sf = ofpact_put_SET_FIELD(ofpacts); | |
807 | sf->field = mf; | |
808 | memcpy(&sf->value, oasf + 1, mf->n_bytes); | |
809 | ||
810 | /* The value must be valid for match and must have the OFPVID_PRESENT bit | |
811 | * on for OXM_OF_VLAN_VID. */ | |
812 | if (!mf_is_value_valid(mf, &sf->value) | |
813 | || (mf->id == MFF_VLAN_VID | |
814 | && !(sf->value.be16 & htons(OFPVID12_PRESENT)))) { | |
815 | struct ds ds = DS_EMPTY_INITIALIZER; | |
816 | mf_format(mf, &sf->value, NULL, &ds); | |
817 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", | |
818 | mf->name, ds_cstr(&ds)); | |
819 | ds_destroy(&ds); | |
820 | ||
821 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
822 | } | |
823 | return 0; | |
824 | } | |
825 | ||
826 | static void | |
827 | set_field_to_openflow12(const struct ofpact_set_field *sf, | |
828 | struct ofpbuf *openflow) | |
829 | { | |
830 | uint16_t padded_value_len = ROUND_UP(sf->field->n_bytes, 8); | |
831 | struct ofp12_action_set_field *oasf; | |
832 | char *value; | |
833 | ||
834 | oasf = ofputil_put_OFPAT12_SET_FIELD(openflow); | |
835 | oasf->dst = htonl(sf->field->oxm_header); | |
836 | oasf->len = htons(sizeof *oasf + padded_value_len); | |
837 | ||
838 | value = ofpbuf_put_zeros(openflow, padded_value_len); | |
839 | memcpy(value, &sf->value, sf->field->n_bytes); | |
840 | } | |
841 | ||
842 | /* Convert 'sf' to one or two REG_LOADs. */ | |
843 | static void | |
844 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) | |
845 | { | |
846 | const struct mf_field *mf = sf->field; | |
847 | struct nx_action_reg_load *narl; | |
848 | ||
849 | if (mf->n_bits > 64) { | |
850 | ovs_assert(mf->n_bytes == 16); /* IPv6 addr. */ | |
851 | /* Split into 64bit chunks */ | |
852 | /* Lower bits first. */ | |
853 | narl = ofputil_put_NXAST_REG_LOAD(openflow); | |
854 | narl->ofs_nbits = nxm_encode_ofs_nbits(0, 64); | |
855 | narl->dst = htonl(mf->nxm_header); | |
856 | memcpy(&narl->value, &sf->value.ipv6.s6_addr[8], sizeof narl->value); | |
857 | /* Higher bits next. */ | |
858 | narl = ofputil_put_NXAST_REG_LOAD(openflow); | |
859 | narl->ofs_nbits = nxm_encode_ofs_nbits(64, mf->n_bits - 64); | |
860 | narl->dst = htonl(mf->nxm_header); | |
861 | memcpy(&narl->value, &sf->value.ipv6.s6_addr[0], sizeof narl->value); | |
862 | } else { | |
863 | narl = ofputil_put_NXAST_REG_LOAD(openflow); | |
864 | narl->ofs_nbits = nxm_encode_ofs_nbits(0, mf->n_bits); | |
865 | narl->dst = htonl(mf->nxm_header); | |
866 | memset(&narl->value, 0, 8 - mf->n_bytes); | |
867 | memcpy((char*)&narl->value + (8 - mf->n_bytes), | |
868 | &sf->value, mf->n_bytes); | |
869 | } | |
870 | } | |
871 | ||
a6fd70bb JR |
872 | /* Convert 'sf' to standard OpenFlow 1.1 actions, if we can, falling back |
873 | * to Nicira extensions if we must. | |
874 | * | |
875 | * We check only meta-flow types that can appear within set field actions and | |
876 | * that have a mapping to compatible action types. These struct mf_field | |
877 | * definitions have a defined OXM or NXM header value and specify the field as | |
878 | * writable. */ | |
879 | static void | |
880 | set_field_to_openflow11(const struct ofpact_set_field *sf, | |
881 | struct ofpbuf *openflow) | |
882 | { | |
883 | switch ((int) sf->field->id) { | |
884 | case MFF_VLAN_TCI: | |
885 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
886 | * | |
887 | * If CFI=1, Add or modify VLAN VID & PCP. | |
888 | * OpenFlow 1.1 set actions only apply if the packet | |
889 | * already has VLAN tags. To be sure that is the case | |
890 | * we have to push a VLAN header. As we do not support | |
891 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
892 | * header already exists. This may backfire, however, | |
893 | * when we start supporting multiple layers of VLANs. | |
894 | * If CFI=0, strip VLAN header, if any. | |
895 | */ | |
896 | if (sf->value.be16 & htons(VLAN_CFI)) { | |
897 | /* Push a VLAN tag, if one was not seen at action validation | |
898 | * time. */ | |
899 | if (!sf->flow_has_vlan) { | |
900 | ofputil_put_OFPAT11_PUSH_VLAN(openflow)->ethertype | |
901 | = htons(ETH_TYPE_VLAN_8021Q); | |
902 | } | |
903 | ofputil_put_OFPAT11_SET_VLAN_VID(openflow)->vlan_vid | |
904 | = sf->value.be16 & htons(VLAN_VID_MASK); | |
905 | ofputil_put_OFPAT11_SET_VLAN_PCP(openflow)->vlan_pcp | |
906 | = vlan_tci_to_pcp(sf->value.be16); | |
907 | } else { | |
908 | /* If the flow did not match on vlan, we have no way of | |
909 | * knowing if the vlan tag exists, so we must POP just to be | |
910 | * sure. */ | |
911 | ofputil_put_OFPAT11_POP_VLAN(openflow); | |
912 | } | |
913 | break; | |
914 | ||
915 | case MFF_VLAN_VID: | |
916 | /* OXM VLAN_PCP to OpenFlow 1.1. | |
917 | * Set field on OXM_OF_VLAN_VID onlyapplies to an existing vlan | |
918 | * tag. Clear the OFPVID_PRESENT bit. | |
919 | */ | |
920 | ofputil_put_OFPAT11_SET_VLAN_VID(openflow)->vlan_vid | |
921 | = sf->value.be16 & htons(VLAN_VID_MASK); | |
922 | break; | |
923 | ||
924 | case MFF_VLAN_PCP: | |
925 | /* OXM VLAN_PCP to OpenFlow 1.1. | |
926 | * OXM_OF_VLAN_PCP only applies to existing vlan tag. */ | |
927 | ofputil_put_OFPAT11_SET_VLAN_PCP(openflow)->vlan_pcp = sf->value.u8; | |
928 | break; | |
929 | ||
930 | case MFF_ETH_SRC: | |
931 | memcpy(ofputil_put_OFPAT11_SET_DL_SRC(openflow)->dl_addr, | |
932 | sf->value.mac, ETH_ADDR_LEN); | |
933 | break; | |
934 | ||
935 | case MFF_ETH_DST: | |
936 | memcpy(ofputil_put_OFPAT11_SET_DL_DST(openflow)->dl_addr, | |
937 | sf->value.mac, ETH_ADDR_LEN); | |
938 | break; | |
939 | ||
097d4939 JR |
940 | case MFF_MPLS_LABEL: |
941 | ofputil_put_OFPAT11_SET_MPLS_LABEL(openflow)->mpls_label = | |
942 | sf->value.be32; | |
943 | break; | |
944 | ||
945 | case MFF_MPLS_TC: | |
946 | ofputil_put_OFPAT11_SET_MPLS_TC(openflow)->mpls_tc = sf->value.u8; | |
947 | break; | |
948 | ||
a6fd70bb JR |
949 | case MFF_IPV4_SRC: |
950 | ofputil_put_OFPAT11_SET_NW_SRC(openflow)->nw_addr = sf->value.be32; | |
951 | break; | |
952 | ||
953 | case MFF_IPV4_DST: | |
954 | ofputil_put_OFPAT11_SET_NW_DST(openflow)->nw_addr = sf->value.be32; | |
955 | break; | |
956 | ||
957 | case MFF_IP_DSCP: | |
958 | ofputil_put_OFPAT11_SET_NW_TOS(openflow)->nw_tos = sf->value.u8; | |
959 | break; | |
960 | ||
961 | case MFF_IP_DSCP_SHIFTED: | |
962 | ofputil_put_OFPAT11_SET_NW_TOS(openflow)->nw_tos = sf->value.u8 << 2; | |
963 | break; | |
964 | ||
965 | case MFF_IP_ECN: | |
966 | ofputil_put_OFPAT11_SET_NW_ECN(openflow)->nw_ecn = sf->value.u8; | |
967 | break; | |
968 | ||
969 | case MFF_IP_TTL: | |
970 | ofputil_put_OFPAT11_SET_NW_TTL(openflow)->nw_ttl = sf->value.u8; | |
971 | break; | |
972 | ||
973 | case MFF_TCP_SRC: | |
974 | case MFF_UDP_SRC: | |
975 | case MFF_SCTP_SRC: | |
976 | ofputil_put_OFPAT11_SET_TP_SRC(openflow)->tp_port = sf->value.be16; | |
977 | break; | |
978 | ||
979 | case MFF_TCP_DST: | |
980 | case MFF_UDP_DST: | |
981 | case MFF_SCTP_DST: | |
982 | ofputil_put_OFPAT11_SET_TP_DST(openflow)->tp_port = sf->value.be16; | |
983 | break; | |
984 | ||
a6fd70bb JR |
985 | default: |
986 | set_field_to_nxast(sf, openflow); | |
987 | break; | |
988 | } | |
989 | } | |
990 | ||
991 | /* Convert 'sf' to standard OpenFlow 1.0 actions, if we can, falling back | |
992 | * to Nicira extensions if we must. | |
993 | * | |
994 | * We check only meta-flow types that can appear within set field actions and | |
995 | * that have a mapping to compatible action types. These struct mf_field | |
996 | * definitions have a defined OXM or NXM header value and specify the field as | |
997 | * writable. */ | |
998 | static void | |
999 | set_field_to_openflow10(const struct ofpact_set_field *sf, | |
1000 | struct ofpbuf *openflow) | |
1001 | { | |
1002 | switch ((int) sf->field->id) { | |
1003 | case MFF_VLAN_TCI: | |
1004 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
1005 | * | |
1006 | * If CFI=1, Add or modify VLAN VID & PCP. | |
1007 | * If CFI=0, strip VLAN header, if any. | |
1008 | */ | |
1009 | if (sf->value.be16 & htons(VLAN_CFI)) { | |
1010 | ofputil_put_OFPAT10_SET_VLAN_VID(openflow)->vlan_vid | |
1011 | = sf->value.be16 & htons(VLAN_VID_MASK); | |
1012 | ofputil_put_OFPAT10_SET_VLAN_PCP(openflow)->vlan_pcp | |
1013 | = vlan_tci_to_pcp(sf->value.be16); | |
1014 | } else { | |
1015 | ofputil_put_OFPAT10_STRIP_VLAN(openflow); | |
1016 | } | |
1017 | break; | |
1018 | ||
1019 | case MFF_VLAN_VID: | |
1020 | /* OXM VLAN_VID to OpenFlow 1.0. | |
1021 | * Set field on OXM_OF_VLAN_VID onlyapplies to an existing vlan | |
1022 | * tag. Clear the OFPVID_PRESENT bit. | |
1023 | */ | |
1024 | ofputil_put_OFPAT10_SET_VLAN_VID(openflow)->vlan_vid | |
1025 | = sf->value.be16 & htons(VLAN_VID_MASK); | |
1026 | break; | |
1027 | ||
1028 | case MFF_VLAN_PCP: | |
1029 | /* OXM VLAN_PCP to OpenFlow 1.0. | |
1030 | * OXM_OF_VLAN_PCP only applies to existing vlan tag. */ | |
1031 | ofputil_put_OFPAT10_SET_VLAN_PCP(openflow)->vlan_pcp = sf->value.u8; | |
1032 | break; | |
1033 | ||
1034 | case MFF_ETH_SRC: | |
1035 | memcpy(ofputil_put_OFPAT10_SET_DL_SRC(openflow)->dl_addr, | |
1036 | sf->value.mac, ETH_ADDR_LEN); | |
1037 | break; | |
1038 | ||
1039 | case MFF_ETH_DST: | |
1040 | memcpy(ofputil_put_OFPAT10_SET_DL_DST(openflow)->dl_addr, | |
1041 | sf->value.mac, ETH_ADDR_LEN); | |
1042 | break; | |
1043 | ||
1044 | case MFF_IPV4_SRC: | |
1045 | ofputil_put_OFPAT10_SET_NW_SRC(openflow)->nw_addr = sf->value.be32; | |
1046 | break; | |
1047 | ||
1048 | case MFF_IPV4_DST: | |
1049 | ofputil_put_OFPAT10_SET_NW_DST(openflow)->nw_addr = sf->value.be32; | |
1050 | break; | |
1051 | ||
1052 | case MFF_IP_DSCP: | |
1053 | ofputil_put_OFPAT10_SET_NW_TOS(openflow)->nw_tos = sf->value.u8; | |
1054 | break; | |
1055 | ||
1056 | case MFF_IP_DSCP_SHIFTED: | |
1057 | ofputil_put_OFPAT10_SET_NW_TOS(openflow)->nw_tos = sf->value.u8 << 2; | |
1058 | break; | |
1059 | ||
1060 | case MFF_TCP_SRC: | |
1061 | case MFF_UDP_SRC: | |
1062 | ofputil_put_OFPAT10_SET_TP_SRC(openflow)->tp_port = sf->value.be16; | |
1063 | break; | |
1064 | ||
1065 | case MFF_TCP_DST: | |
1066 | case MFF_UDP_DST: | |
1067 | ofputil_put_OFPAT10_SET_TP_DST(openflow)->tp_port = sf->value.be16; | |
1068 | break; | |
1069 | ||
1070 | default: | |
1071 | set_field_to_nxast(sf, openflow); | |
1072 | break; | |
1073 | } | |
1074 | } | |
1075 | ||
b2dd70be JR |
1076 | static void |
1077 | set_field_to_openflow(const struct ofpact_set_field *sf, | |
1078 | struct ofpbuf *openflow) | |
1079 | { | |
1080 | struct ofp_header *oh = (struct ofp_header *)openflow->l2; | |
1081 | ||
1082 | if (oh->version >= OFP12_VERSION) { | |
1083 | set_field_to_openflow12(sf, openflow); | |
a6fd70bb JR |
1084 | } else if (oh->version == OFP11_VERSION) { |
1085 | set_field_to_openflow11(sf, openflow); | |
1086 | } else if (oh->version == OFP10_VERSION) { | |
1087 | set_field_to_openflow10(sf, openflow); | |
b2dd70be | 1088 | } else { |
428b2edd | 1089 | OVS_NOT_REACHED(); |
b2dd70be JR |
1090 | } |
1091 | } | |
1092 | ||
d01c980f BP |
1093 | static enum ofperr |
1094 | output_from_openflow11(const struct ofp11_action_output *oao, | |
1095 | struct ofpbuf *out) | |
1096 | { | |
1097 | struct ofpact_output *output; | |
1098 | enum ofperr error; | |
1099 | ||
1100 | output = ofpact_put_OUTPUT(out); | |
1101 | output->max_len = ntohs(oao->max_len); | |
1102 | ||
1103 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
1104 | if (error) { | |
1105 | return error; | |
1106 | } | |
1107 | ||
57ad4e9e | 1108 | return ofpact_check_output_port(output->port, OFPP_MAX); |
d01c980f BP |
1109 | } |
1110 | ||
1111 | static enum ofperr | |
e3f8f887 JR |
1112 | ofpact_from_openflow11(const union ofp_action *a, enum ofp_version version, |
1113 | struct ofpbuf *out) | |
d01c980f BP |
1114 | { |
1115 | enum ofputil_action_code code; | |
1116 | enum ofperr error; | |
ca287d20 JR |
1117 | struct ofpact_vlan_vid *vlan_vid; |
1118 | struct ofpact_vlan_pcp *vlan_pcp; | |
d01c980f BP |
1119 | |
1120 | error = decode_openflow11_action(a, &code); | |
1121 | if (error) { | |
1122 | return error; | |
1123 | } | |
1124 | ||
6cc17de8 JR |
1125 | if (version >= OFP12_VERSION) { |
1126 | switch ((int)code) { | |
1127 | case OFPUTIL_OFPAT11_SET_VLAN_VID: | |
1128 | case OFPUTIL_OFPAT11_SET_VLAN_PCP: | |
1129 | case OFPUTIL_OFPAT11_SET_DL_SRC: | |
1130 | case OFPUTIL_OFPAT11_SET_DL_DST: | |
1131 | case OFPUTIL_OFPAT11_SET_NW_SRC: | |
1132 | case OFPUTIL_OFPAT11_SET_NW_DST: | |
1133 | case OFPUTIL_OFPAT11_SET_NW_TOS: | |
1134 | case OFPUTIL_OFPAT11_SET_NW_ECN: | |
1135 | case OFPUTIL_OFPAT11_SET_TP_SRC: | |
1136 | case OFPUTIL_OFPAT11_SET_TP_DST: | |
1137 | VLOG_WARN_RL(&rl, "Deprecated action %s received over %s", | |
1138 | ofputil_action_name_from_code(code), | |
1139 | ofputil_version_to_string(version)); | |
1140 | } | |
1141 | } | |
1142 | ||
d01c980f BP |
1143 | switch (code) { |
1144 | case OFPUTIL_ACTION_INVALID: | |
1145 | #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM: | |
9c4dbc1c | 1146 | #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
d01c980f | 1147 | #include "ofp-util.def" |
428b2edd | 1148 | OVS_NOT_REACHED(); |
d01c980f BP |
1149 | |
1150 | case OFPUTIL_OFPAT11_OUTPUT: | |
dba70df0 | 1151 | return output_from_openflow11(&a->ofp11_output, out); |
d01c980f BP |
1152 | |
1153 | case OFPUTIL_OFPAT11_SET_VLAN_VID: | |
1154 | if (a->vlan_vid.vlan_vid & ~htons(0xfff)) { | |
1155 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1156 | } | |
ca287d20 JR |
1157 | vlan_vid = ofpact_put_SET_VLAN_VID(out); |
1158 | vlan_vid->vlan_vid = ntohs(a->vlan_vid.vlan_vid); | |
1159 | vlan_vid->push_vlan_if_needed = false; | |
1160 | vlan_vid->ofpact.compat = code; | |
d01c980f BP |
1161 | break; |
1162 | ||
1163 | case OFPUTIL_OFPAT11_SET_VLAN_PCP: | |
1164 | if (a->vlan_pcp.vlan_pcp & ~7) { | |
1165 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1166 | } | |
ca287d20 JR |
1167 | vlan_pcp = ofpact_put_SET_VLAN_PCP(out); |
1168 | vlan_pcp->vlan_pcp = a->vlan_pcp.vlan_pcp; | |
1169 | vlan_pcp->push_vlan_if_needed = false; | |
1170 | vlan_pcp->ofpact.compat = code; | |
d01c980f BP |
1171 | break; |
1172 | ||
3e34fbdd | 1173 | case OFPUTIL_OFPAT11_PUSH_VLAN: |
dba70df0 | 1174 | if (a->push.ethertype != htons(ETH_TYPE_VLAN_8021Q)) { |
5dca28b5 | 1175 | /* XXX 802.1AD(QinQ) isn't supported at the moment */ |
15549878 | 1176 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
3e34fbdd IY |
1177 | } |
1178 | ofpact_put_PUSH_VLAN(out); | |
1179 | break; | |
1180 | ||
8e61c110 | 1181 | case OFPUTIL_OFPAT11_POP_VLAN: |
64fcc073 | 1182 | ofpact_put_STRIP_VLAN(out)->ofpact.compat = code; |
8e61c110 IY |
1183 | break; |
1184 | ||
276c4e7a SH |
1185 | case OFPUTIL_OFPAT11_SET_QUEUE: |
1186 | ofpact_put_SET_QUEUE(out)->queue_id = | |
dba70df0 | 1187 | ntohl(a->ofp11_set_queue.queue_id); |
276c4e7a SH |
1188 | break; |
1189 | ||
d01c980f | 1190 | case OFPUTIL_OFPAT11_SET_DL_SRC: |
dba70df0 BP |
1191 | memcpy(ofpact_put_SET_ETH_SRC(out)->mac, a->dl_addr.dl_addr, |
1192 | ETH_ADDR_LEN); | |
d01c980f BP |
1193 | break; |
1194 | ||
1195 | case OFPUTIL_OFPAT11_SET_DL_DST: | |
dba70df0 BP |
1196 | memcpy(ofpact_put_SET_ETH_DST(out)->mac, a->dl_addr.dl_addr, |
1197 | ETH_ADDR_LEN); | |
d01c980f BP |
1198 | break; |
1199 | ||
7bcb1506 IY |
1200 | case OFPUTIL_OFPAT11_DEC_NW_TTL: |
1201 | dec_ttl_from_openflow(out, code); | |
1202 | break; | |
1203 | ||
d01c980f BP |
1204 | case OFPUTIL_OFPAT11_SET_NW_SRC: |
1205 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr; | |
1206 | break; | |
1207 | ||
1208 | case OFPUTIL_OFPAT11_SET_NW_DST: | |
1209 | ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr; | |
1210 | break; | |
1211 | ||
1212 | case OFPUTIL_OFPAT11_SET_NW_TOS: | |
1213 | if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) { | |
1214 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1215 | } | |
04f01c24 | 1216 | ofpact_put_SET_IP_DSCP(out)->dscp = a->nw_tos.nw_tos; |
d01c980f BP |
1217 | break; |
1218 | ||
ff14eb7a JR |
1219 | case OFPUTIL_OFPAT11_SET_NW_ECN: |
1220 | if (a->nw_ecn.nw_ecn & ~IP_ECN_MASK) { | |
1221 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1222 | } | |
1223 | ofpact_put_SET_IP_ECN(out)->ecn = a->nw_ecn.nw_ecn; | |
1224 | break; | |
1225 | ||
0c20dbe4 JR |
1226 | case OFPUTIL_OFPAT11_SET_NW_TTL: |
1227 | ofpact_put_SET_IP_TTL(out)->ttl = a->nw_ttl.nw_ttl; | |
1228 | break; | |
1229 | ||
d01c980f BP |
1230 | case OFPUTIL_OFPAT11_SET_TP_SRC: |
1231 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
1232 | break; | |
1233 | ||
1234 | case OFPUTIL_OFPAT11_SET_TP_DST: | |
1235 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port); | |
1236 | break; | |
1237 | ||
e9536ecb | 1238 | case OFPUTIL_OFPAT12_SET_FIELD: |
b2dd70be | 1239 | return set_field_from_openflow(&a->set_field, out); |
e9536ecb | 1240 | |
097d4939 JR |
1241 | case OFPUTIL_OFPAT11_SET_MPLS_LABEL: |
1242 | ofpact_put_SET_MPLS_LABEL(out)->label = a->ofp11_mpls_label.mpls_label; | |
1243 | break; | |
1244 | ||
1245 | case OFPUTIL_OFPAT11_SET_MPLS_TC: | |
1246 | ofpact_put_SET_MPLS_TC(out)->tc = a->ofp11_mpls_tc.mpls_tc; | |
1247 | break; | |
1248 | ||
dba70df0 BP |
1249 | case OFPUTIL_OFPAT11_SET_MPLS_TTL: |
1250 | ofpact_put_SET_MPLS_TTL(out)->ttl = a->ofp11_mpls_ttl.mpls_ttl; | |
0f3f3c3d | 1251 | break; |
0f3f3c3d | 1252 | |
b676167a SH |
1253 | case OFPUTIL_OFPAT11_DEC_MPLS_TTL: |
1254 | ofpact_put_DEC_MPLS_TTL(out); | |
1255 | break; | |
1256 | ||
dba70df0 | 1257 | case OFPUTIL_OFPAT11_PUSH_MPLS: |
269dc90a | 1258 | error = push_mpls_from_openflow(a->push.ethertype, out); |
b02475c5 | 1259 | break; |
b02475c5 | 1260 | |
dba70df0 BP |
1261 | case OFPUTIL_OFPAT11_POP_MPLS: |
1262 | if (eth_type_mpls(a->ofp11_pop_mpls.ethertype)) { | |
b02475c5 SH |
1263 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1264 | } | |
dba70df0 | 1265 | ofpact_put_POP_MPLS(out)->ethertype = a->ofp11_pop_mpls.ethertype; |
b02475c5 | 1266 | break; |
b02475c5 | 1267 | |
dba70df0 BP |
1268 | case OFPUTIL_OFPAT11_GROUP: |
1269 | ofpact_put_GROUP(out)->group_id = ntohl(a->group.group_id); | |
7395c052 | 1270 | break; |
7395c052 | 1271 | |
d01c980f BP |
1272 | #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM: |
1273 | #include "ofp-util.def" | |
1274 | return ofpact_from_nxast(a, code, out); | |
1275 | } | |
1276 | ||
1277 | return error; | |
1278 | } | |
1279 | ||
7fdb60a7 SH |
1280 | /* True if an action sets the value of a field |
1281 | * in a way that is compatibile with the action set. | |
1282 | * False otherwise. */ | |
1283 | static bool | |
1284 | ofpact_is_set_action(const struct ofpact *a) | |
1285 | { | |
1286 | switch (a->type) { | |
b2dd70be | 1287 | case OFPACT_SET_FIELD: |
7fdb60a7 SH |
1288 | case OFPACT_REG_LOAD: |
1289 | case OFPACT_SET_ETH_DST: | |
1290 | case OFPACT_SET_ETH_SRC: | |
04f01c24 | 1291 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 1292 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 1293 | case OFPACT_SET_IP_TTL: |
7fdb60a7 SH |
1294 | case OFPACT_SET_IPV4_DST: |
1295 | case OFPACT_SET_IPV4_SRC: | |
1296 | case OFPACT_SET_L4_DST_PORT: | |
1297 | case OFPACT_SET_L4_SRC_PORT: | |
097d4939 JR |
1298 | case OFPACT_SET_MPLS_LABEL: |
1299 | case OFPACT_SET_MPLS_TC: | |
7fdb60a7 SH |
1300 | case OFPACT_SET_MPLS_TTL: |
1301 | case OFPACT_SET_QUEUE: | |
1302 | case OFPACT_SET_TUNNEL: | |
1303 | case OFPACT_SET_VLAN_PCP: | |
1304 | case OFPACT_SET_VLAN_VID: | |
1305 | return true; | |
1306 | case OFPACT_BUNDLE: | |
1307 | case OFPACT_CLEAR_ACTIONS: | |
1308 | case OFPACT_CONTROLLER: | |
1309 | case OFPACT_DEC_MPLS_TTL: | |
1310 | case OFPACT_DEC_TTL: | |
1311 | case OFPACT_ENQUEUE: | |
1312 | case OFPACT_EXIT: | |
1313 | case OFPACT_FIN_TIMEOUT: | |
1314 | case OFPACT_GOTO_TABLE: | |
1315 | case OFPACT_GROUP: | |
1316 | case OFPACT_LEARN: | |
1317 | case OFPACT_METER: | |
1318 | case OFPACT_MULTIPATH: | |
1319 | case OFPACT_NOTE: | |
1320 | case OFPACT_OUTPUT: | |
1321 | case OFPACT_OUTPUT_REG: | |
1322 | case OFPACT_POP_MPLS: | |
1323 | case OFPACT_POP_QUEUE: | |
1324 | case OFPACT_PUSH_MPLS: | |
1325 | case OFPACT_PUSH_VLAN: | |
1326 | case OFPACT_REG_MOVE: | |
1327 | case OFPACT_RESUBMIT: | |
1328 | case OFPACT_SAMPLE: | |
1329 | case OFPACT_STACK_POP: | |
1330 | case OFPACT_STACK_PUSH: | |
1331 | case OFPACT_STRIP_VLAN: | |
1332 | case OFPACT_WRITE_ACTIONS: | |
1333 | case OFPACT_WRITE_METADATA: | |
1334 | return false; | |
1335 | default: | |
428b2edd | 1336 | OVS_NOT_REACHED(); |
7fdb60a7 SH |
1337 | } |
1338 | } | |
1339 | ||
1340 | /* True if an action is allowed in the action set. | |
1341 | * False otherwise. */ | |
1342 | static bool | |
1343 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
1344 | { | |
1345 | switch (a->type) { | |
1346 | case OFPACT_DEC_MPLS_TTL: | |
1347 | case OFPACT_DEC_TTL: | |
1348 | case OFPACT_GROUP: | |
1349 | case OFPACT_OUTPUT: | |
1350 | case OFPACT_POP_MPLS: | |
1351 | case OFPACT_PUSH_MPLS: | |
1352 | case OFPACT_PUSH_VLAN: | |
1353 | case OFPACT_REG_LOAD: | |
b2dd70be | 1354 | case OFPACT_SET_FIELD: |
7fdb60a7 SH |
1355 | case OFPACT_SET_ETH_DST: |
1356 | case OFPACT_SET_ETH_SRC: | |
04f01c24 | 1357 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 1358 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 1359 | case OFPACT_SET_IP_TTL: |
7fdb60a7 SH |
1360 | case OFPACT_SET_IPV4_DST: |
1361 | case OFPACT_SET_IPV4_SRC: | |
1362 | case OFPACT_SET_L4_DST_PORT: | |
1363 | case OFPACT_SET_L4_SRC_PORT: | |
097d4939 JR |
1364 | case OFPACT_SET_MPLS_LABEL: |
1365 | case OFPACT_SET_MPLS_TC: | |
7fdb60a7 SH |
1366 | case OFPACT_SET_MPLS_TTL: |
1367 | case OFPACT_SET_QUEUE: | |
1368 | case OFPACT_SET_TUNNEL: | |
1369 | case OFPACT_SET_VLAN_PCP: | |
1370 | case OFPACT_SET_VLAN_VID: | |
1371 | case OFPACT_STRIP_VLAN: | |
1372 | return true; | |
1373 | ||
1374 | /* In general these actions are excluded because they are not part of | |
1375 | * the OpenFlow specification nor map to actions that are defined in | |
1376 | * the specification. Thus the order in which they should be applied | |
1377 | * in the action set is undefined. */ | |
1378 | case OFPACT_BUNDLE: | |
1379 | case OFPACT_CONTROLLER: | |
1380 | case OFPACT_ENQUEUE: | |
1381 | case OFPACT_EXIT: | |
1382 | case OFPACT_FIN_TIMEOUT: | |
1383 | case OFPACT_LEARN: | |
1384 | case OFPACT_MULTIPATH: | |
1385 | case OFPACT_NOTE: | |
1386 | case OFPACT_OUTPUT_REG: | |
1387 | case OFPACT_POP_QUEUE: | |
1388 | case OFPACT_REG_MOVE: | |
1389 | case OFPACT_RESUBMIT: | |
1390 | case OFPACT_SAMPLE: | |
1391 | case OFPACT_STACK_POP: | |
1392 | case OFPACT_STACK_PUSH: | |
1393 | ||
1394 | /* The action set may only include actions and thus | |
1395 | * may not include any instructions */ | |
1396 | case OFPACT_CLEAR_ACTIONS: | |
1397 | case OFPACT_GOTO_TABLE: | |
1398 | case OFPACT_METER: | |
1399 | case OFPACT_WRITE_ACTIONS: | |
1400 | case OFPACT_WRITE_METADATA: | |
1401 | return false; | |
1402 | default: | |
428b2edd | 1403 | OVS_NOT_REACHED(); |
7fdb60a7 SH |
1404 | } |
1405 | } | |
1406 | ||
1407 | /* Append ofpact 'a' onto the tail of 'out' */ | |
1408 | static void | |
1409 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) | |
1410 | { | |
1411 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); | |
1412 | } | |
1413 | ||
1414 | /* Copies the last ofpact whose type is 'filter' from 'in' to 'out'. */ | |
1415 | static bool | |
1416 | ofpacts_copy_last(struct ofpbuf *out, const struct ofpbuf *in, | |
1417 | enum ofpact_type filter) | |
1418 | { | |
1419 | const struct ofpact *target; | |
1420 | const struct ofpact *a; | |
1421 | ||
1422 | target = NULL; | |
1423 | OFPACT_FOR_EACH (a, in->data, in->size) { | |
1424 | if (a->type == filter) { | |
1425 | target = a; | |
1426 | } | |
1427 | } | |
1428 | if (target) { | |
1429 | ofpact_copy(out, target); | |
1430 | } | |
1431 | return target != NULL; | |
1432 | } | |
1433 | ||
1434 | /* Append all ofpacts, for which 'filter' returns true, from 'in' to 'out'. | |
1435 | * The order of appended ofpacts is preserved between 'in' and 'out' */ | |
1436 | static void | |
1437 | ofpacts_copy_all(struct ofpbuf *out, const struct ofpbuf *in, | |
1438 | bool (*filter)(const struct ofpact *)) | |
1439 | { | |
1440 | const struct ofpact *a; | |
1441 | ||
1442 | OFPACT_FOR_EACH (a, in->data, in->size) { | |
1443 | if (filter(a)) { | |
1444 | ofpact_copy(out, a); | |
1445 | } | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | /* Reads 'action_set', which contains ofpacts accumulated by | |
1450 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
1451 | * executed directly into 'action_list'. (These names correspond to the | |
1452 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
1453 | * | |
1454 | * In general this involves appending the last instance of each action that is | |
1455 | * adimissible in the action set in the order described in the OpenFlow | |
1456 | * specification. | |
1457 | * | |
1458 | * Exceptions: | |
1459 | * + output action is only appended if no group action was present in 'in'. | |
1460 | * + As a simplification all set actions are copied in the order the are | |
1461 | * provided in 'in' as many set actions applied to a field has the same | |
1462 | * affect as only applying the last action that sets a field and | |
1463 | * duplicates are removed by do_xlate_actions(). | |
1464 | * This has an unwanted side-effect of compsoting multiple | |
1465 | * LOAD_REG actions that touch different regions of the same field. */ | |
1466 | void | |
1467 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
1468 | const struct ofpbuf *action_set) | |
1469 | { | |
1470 | /* The OpenFlow spec "Action Set" section specifies this order. */ | |
1471 | ofpacts_copy_last(action_list, action_set, OFPACT_STRIP_VLAN); | |
1472 | ofpacts_copy_last(action_list, action_set, OFPACT_POP_MPLS); | |
1473 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_MPLS); | |
1474 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_VLAN); | |
1475 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_TTL); | |
1476 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_MPLS_TTL); | |
1477 | ofpacts_copy_all(action_list, action_set, ofpact_is_set_action); | |
1478 | ofpacts_copy_last(action_list, action_set, OFPACT_SET_QUEUE); | |
1479 | ||
1480 | /* If both OFPACT_GROUP and OFPACT_OUTPUT are present, OpenFlow says that | |
1481 | * we should execute only OFPACT_GROUP. | |
1482 | * | |
1483 | * If neither OFPACT_GROUP nor OFPACT_OUTPUT is present, then we can drop | |
1484 | * all the actions because there's no point in modifying a packet that will | |
1485 | * not be sent anywhere. */ | |
1486 | if (!ofpacts_copy_last(action_list, action_set, OFPACT_GROUP) && | |
1487 | !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT)) { | |
1488 | ofpbuf_clear(action_list); | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | ||
1493 | static enum ofperr | |
1494 | ofpacts_from_openflow11_for_action_set(const union ofp_action *in, | |
e3f8f887 JR |
1495 | size_t n_in, enum ofp_version version, |
1496 | struct ofpbuf *out) | |
7fdb60a7 SH |
1497 | { |
1498 | enum ofperr error; | |
1499 | struct ofpact *a; | |
1500 | size_t start = out->size; | |
1501 | ||
e3f8f887 JR |
1502 | error = ofpacts_from_openflow(in, n_in, version, out); |
1503 | ||
7fdb60a7 SH |
1504 | if (error) { |
1505 | return error; | |
1506 | } | |
1507 | ||
1508 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { | |
1509 | if (!ofpact_is_allowed_in_actions_set(a)) { | |
1510 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
1511 | return OFPERR_OFPBAC_BAD_TYPE; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | return 0; | |
1516 | } | |
1517 | ||
f25d0cf3 | 1518 | \f |
d01c980f BP |
1519 | /* OpenFlow 1.1 instructions. */ |
1520 | ||
d01c980f | 1521 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
6a8a8528 | 1522 | static inline const struct STRUCT * OVS_UNUSED \ |
a359d5ad IY |
1523 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ |
1524 | { \ | |
cb22974d | 1525 | ovs_assert(inst->type == htons(ENUM)); \ |
db5a1019 | 1526 | return ALIGNED_CAST(struct STRUCT *, inst); \ |
a359d5ad IY |
1527 | } \ |
1528 | \ | |
6a8a8528 | 1529 | static inline void OVS_UNUSED \ |
d01c980f BP |
1530 | instruction_init_##ENUM(struct STRUCT *s) \ |
1531 | { \ | |
1532 | memset(s, 0, sizeof *s); \ | |
1533 | s->type = htons(ENUM); \ | |
1534 | s->len = htons(sizeof *s); \ | |
1535 | } \ | |
1536 | \ | |
6a8a8528 | 1537 | static inline struct STRUCT * OVS_UNUSED \ |
d01c980f BP |
1538 | instruction_put_##ENUM(struct ofpbuf *buf) \ |
1539 | { \ | |
1540 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
1541 | instruction_init_##ENUM(s); \ | |
1542 | return s; \ | |
1543 | } | |
1544 | OVS_INSTRUCTIONS | |
1545 | #undef DEFINE_INST | |
1546 | ||
a359d5ad IY |
1547 | struct instruction_type_info { |
1548 | enum ovs_instruction_type type; | |
1549 | const char *name; | |
1550 | }; | |
1551 | ||
1552 | static const struct instruction_type_info inst_info[] = { | |
1553 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
1554 | OVS_INSTRUCTIONS | |
1555 | #undef DEFINE_INST | |
1556 | }; | |
1557 | ||
1558 | const char * | |
ba0bc9b0 | 1559 | ovs_instruction_name_from_type(enum ovs_instruction_type type) |
a359d5ad | 1560 | { |
6ae0fd54 | 1561 | return inst_info[type].name; |
a359d5ad IY |
1562 | } |
1563 | ||
1564 | int | |
ba0bc9b0 | 1565 | ovs_instruction_type_from_name(const char *name) |
a359d5ad IY |
1566 | { |
1567 | const struct instruction_type_info *p; | |
1568 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
1569 | if (!strcasecmp(name, p->name)) { | |
1570 | return p->type; | |
1571 | } | |
1572 | } | |
1573 | return -1; | |
1574 | } | |
1575 | ||
084c53de BP |
1576 | enum ovs_instruction_type |
1577 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
1578 | { | |
1579 | switch (type) { | |
1580 | case OFPACT_METER: | |
1581 | return OVSINST_OFPIT13_METER; | |
1582 | case OFPACT_CLEAR_ACTIONS: | |
1583 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
7fdb60a7 SH |
1584 | case OFPACT_WRITE_ACTIONS: |
1585 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
084c53de BP |
1586 | case OFPACT_WRITE_METADATA: |
1587 | return OVSINST_OFPIT11_WRITE_METADATA; | |
1588 | case OFPACT_GOTO_TABLE: | |
1589 | return OVSINST_OFPIT11_GOTO_TABLE; | |
1590 | case OFPACT_OUTPUT: | |
7395c052 | 1591 | case OFPACT_GROUP: |
084c53de BP |
1592 | case OFPACT_CONTROLLER: |
1593 | case OFPACT_ENQUEUE: | |
1594 | case OFPACT_OUTPUT_REG: | |
1595 | case OFPACT_BUNDLE: | |
1596 | case OFPACT_SET_VLAN_VID: | |
1597 | case OFPACT_SET_VLAN_PCP: | |
1598 | case OFPACT_STRIP_VLAN: | |
1599 | case OFPACT_PUSH_VLAN: | |
1600 | case OFPACT_SET_ETH_SRC: | |
1601 | case OFPACT_SET_ETH_DST: | |
1602 | case OFPACT_SET_IPV4_SRC: | |
1603 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 1604 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 1605 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 1606 | case OFPACT_SET_IP_TTL: |
084c53de BP |
1607 | case OFPACT_SET_L4_SRC_PORT: |
1608 | case OFPACT_SET_L4_DST_PORT: | |
1609 | case OFPACT_REG_MOVE: | |
1610 | case OFPACT_REG_LOAD: | |
b2dd70be | 1611 | case OFPACT_SET_FIELD: |
084c53de BP |
1612 | case OFPACT_STACK_PUSH: |
1613 | case OFPACT_STACK_POP: | |
1614 | case OFPACT_DEC_TTL: | |
097d4939 JR |
1615 | case OFPACT_SET_MPLS_LABEL: |
1616 | case OFPACT_SET_MPLS_TC: | |
084c53de BP |
1617 | case OFPACT_SET_MPLS_TTL: |
1618 | case OFPACT_DEC_MPLS_TTL: | |
1619 | case OFPACT_PUSH_MPLS: | |
1620 | case OFPACT_POP_MPLS: | |
1621 | case OFPACT_SET_TUNNEL: | |
1622 | case OFPACT_SET_QUEUE: | |
1623 | case OFPACT_POP_QUEUE: | |
1624 | case OFPACT_FIN_TIMEOUT: | |
1625 | case OFPACT_RESUBMIT: | |
1626 | case OFPACT_LEARN: | |
1627 | case OFPACT_MULTIPATH: | |
1628 | case OFPACT_NOTE: | |
1629 | case OFPACT_EXIT: | |
1630 | case OFPACT_SAMPLE: | |
1631 | default: | |
1632 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
1633 | } | |
1634 | } | |
1635 | ||
c0621c39 AW |
1636 | enum ofperr |
1637 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
1638 | const uint16_t inst_type) | |
1639 | { | |
1640 | switch (inst_type) { | |
1641 | ||
1642 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
1643 | case ENUM: \ | |
1644 | *instruction_type = OVSINST_##ENUM; \ | |
1645 | return 0; | |
1646 | OVS_INSTRUCTIONS | |
1647 | #undef DEFINE_INST | |
1648 | ||
1649 | default: | |
1650 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
1651 | } | |
1652 | } | |
1653 | ||
d01c980f BP |
1654 | static inline struct ofp11_instruction * |
1655 | instruction_next(const struct ofp11_instruction *inst) | |
1656 | { | |
1657 | return ((struct ofp11_instruction *) (void *) | |
1658 | ((uint8_t *) inst + ntohs(inst->len))); | |
1659 | } | |
1660 | ||
1661 | static inline bool | |
1662 | instruction_is_valid(const struct ofp11_instruction *inst, | |
1663 | size_t n_instructions) | |
1664 | { | |
1665 | uint16_t len = ntohs(inst->len); | |
1666 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
1667 | && len >= sizeof *inst | |
1668 | && len / sizeof *inst <= n_instructions); | |
1669 | } | |
1670 | ||
1671 | /* This macro is careful to check for instructions with bad lengths. */ | |
1672 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
1673 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
1674 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
1675 | ((LEFT) -= (ntohs((ITER)->len) \ | |
1676 | / sizeof(struct ofp11_instruction)), \ | |
1677 | (ITER) = instruction_next(ITER))) | |
1678 | ||
1679 | static enum ofperr | |
1680 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
1681 | enum ovs_instruction_type *type) | |
1682 | { | |
1683 | uint16_t len = ntohs(inst->len); | |
1684 | ||
1685 | switch (inst->type) { | |
1686 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
1687 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
1688 | ||
1689 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
1690 | case CONSTANT_HTONS(ENUM): \ | |
1691 | if (EXTENSIBLE \ | |
1692 | ? len >= sizeof(struct STRUCT) \ | |
1693 | : len == sizeof(struct STRUCT)) { \ | |
1694 | *type = OVSINST_##ENUM; \ | |
1695 | return 0; \ | |
1696 | } else { \ | |
1697 | return OFPERR_OFPBIC_BAD_LEN; \ | |
1698 | } | |
1699 | OVS_INSTRUCTIONS | |
1700 | #undef DEFINE_INST | |
1701 | ||
1702 | default: | |
1703 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | static enum ofperr | |
1708 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
1709 | size_t n_insts, | |
1710 | const struct ofp11_instruction *out[]) | |
1711 | { | |
1712 | const struct ofp11_instruction *inst; | |
1713 | size_t left; | |
1714 | ||
1715 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); | |
1716 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
1717 | enum ovs_instruction_type type; | |
1718 | enum ofperr error; | |
1719 | ||
1720 | error = decode_openflow11_instruction(inst, &type); | |
1721 | if (error) { | |
1722 | return error; | |
1723 | } | |
1724 | ||
1725 | if (out[type]) { | |
f4104c68 | 1726 | return OFPERR_ONFBIC_DUP_INSTRUCTION; |
d01c980f BP |
1727 | } |
1728 | out[type] = inst; | |
1729 | } | |
1730 | ||
1731 | if (left) { | |
34582733 | 1732 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, |
d01c980f BP |
1733 | (n_insts - left) * sizeof *inst); |
1734 | return OFPERR_OFPBIC_BAD_LEN; | |
1735 | } | |
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | static void | |
1740 | get_actions_from_instruction(const struct ofp11_instruction *inst, | |
db5a1019 | 1741 | const union ofp_action **actions, |
dba70df0 | 1742 | size_t *max_actions) |
d01c980f | 1743 | { |
db5a1019 | 1744 | *actions = ALIGNED_CAST(const union ofp_action *, inst + 1); |
dba70df0 | 1745 | *max_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN; |
d01c980f BP |
1746 | } |
1747 | ||
d01c980f | 1748 | enum ofperr |
e3f8f887 JR |
1749 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, |
1750 | unsigned int instructions_len, | |
1751 | enum ofp_version version, | |
1752 | struct ofpbuf *ofpacts) | |
d01c980f | 1753 | { |
d01c980f BP |
1754 | const struct ofp11_instruction *instructions; |
1755 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
1756 | enum ofperr error; | |
1757 | ||
1758 | ofpbuf_clear(ofpacts); | |
1759 | ||
1760 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { | |
1761 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
1762 | "multiple of %d", | |
1763 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
1764 | error = OFPERR_OFPBIC_BAD_LEN; | |
1765 | goto exit; | |
1766 | } | |
1767 | ||
1768 | instructions = ofpbuf_try_pull(openflow, instructions_len); | |
1769 | if (instructions == NULL) { | |
1770 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
34582733 | 1771 | "remaining message length (%"PRIuSIZE")", |
d01c980f BP |
1772 | instructions_len, openflow->size); |
1773 | error = OFPERR_OFPBIC_BAD_LEN; | |
1774 | goto exit; | |
1775 | } | |
1776 | ||
1777 | error = decode_openflow11_instructions( | |
1778 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
1779 | insts); | |
1780 | if (error) { | |
1781 | goto exit; | |
1782 | } | |
1783 | ||
638a19b0 JR |
1784 | if (insts[OVSINST_OFPIT13_METER]) { |
1785 | const struct ofp13_instruction_meter *oim; | |
1786 | struct ofpact_meter *om; | |
1787 | ||
db5a1019 AW |
1788 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
1789 | insts[OVSINST_OFPIT13_METER]); | |
638a19b0 JR |
1790 | |
1791 | om = ofpact_put_METER(ofpacts); | |
1792 | om->meter_id = ntohl(oim->meter_id); | |
1793 | } | |
d01c980f BP |
1794 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { |
1795 | const union ofp_action *actions; | |
dba70df0 | 1796 | size_t max_actions; |
d01c980f BP |
1797 | |
1798 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], | |
dba70df0 | 1799 | &actions, &max_actions); |
e3f8f887 | 1800 | error = ofpacts_from_openflow(actions, max_actions, version, ofpacts); |
d01c980f BP |
1801 | if (error) { |
1802 | goto exit; | |
1803 | } | |
1804 | } | |
b19e8793 IY |
1805 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { |
1806 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
1807 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
1808 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
1809 | } | |
7fdb60a7 SH |
1810 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { |
1811 | struct ofpact_nest *on; | |
1812 | const union ofp_action *actions; | |
dba70df0 | 1813 | size_t max_actions; |
2b11907b | 1814 | size_t start; |
7fdb60a7 | 1815 | |
2b11907b YT |
1816 | ofpact_pad(ofpacts); |
1817 | start = ofpacts->size; | |
7fdb60a7 SH |
1818 | on = ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
1819 | offsetof(struct ofpact_nest, actions)); | |
1820 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], | |
dba70df0 BP |
1821 | &actions, &max_actions); |
1822 | error = ofpacts_from_openflow11_for_action_set(actions, max_actions, | |
e3f8f887 | 1823 | version, ofpacts); |
7fdb60a7 SH |
1824 | if (error) { |
1825 | goto exit; | |
1826 | } | |
2b11907b | 1827 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); |
7fdb60a7 SH |
1828 | on->ofpact.len = ofpacts->size - start; |
1829 | } | |
4cceacb9 JS |
1830 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { |
1831 | const struct ofp11_instruction_write_metadata *oiwm; | |
1832 | struct ofpact_metadata *om; | |
1833 | ||
db5a1019 AW |
1834 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
1835 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
4cceacb9 JS |
1836 | |
1837 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
1838 | om->metadata = oiwm->metadata; | |
1839 | om->mask = oiwm->metadata_mask; | |
1840 | } | |
8dd54666 IY |
1841 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { |
1842 | const struct ofp11_instruction_goto_table *oigt; | |
1843 | struct ofpact_goto_table *ogt; | |
1844 | ||
1845 | oigt = instruction_get_OFPIT11_GOTO_TABLE( | |
1846 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
1847 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
1848 | ogt->table_id = oigt->table_id; | |
1849 | } | |
d01c980f | 1850 | |
4cceacb9 | 1851 | error = ofpacts_verify(ofpacts->data, ofpacts->size); |
d01c980f BP |
1852 | exit: |
1853 | if (error) { | |
1854 | ofpbuf_clear(ofpacts); | |
1855 | } | |
1856 | return error; | |
1857 | } | |
1858 | \f | |
57ad4e9e BP |
1859 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the |
1860 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
1861 | * valid, otherwise an OpenFlow error code. */ | |
1862 | enum ofperr | |
1863 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
1864 | { | |
1865 | switch (port) { | |
1866 | case OFPP_IN_PORT: | |
1867 | case OFPP_TABLE: | |
1868 | case OFPP_NORMAL: | |
1869 | case OFPP_FLOOD: | |
1870 | case OFPP_ALL: | |
1871 | case OFPP_CONTROLLER: | |
1872 | case OFPP_NONE: | |
1873 | case OFPP_LOCAL: | |
1874 | return 0; | |
1875 | ||
1876 | default: | |
1877 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
1878 | return 0; | |
1879 | } | |
1880 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1881 | } | |
1882 | } | |
1883 | ||
ba2fe8e9 BP |
1884 | /* Removes the protocols that require consistency between match and actions |
1885 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
1886 | * | |
1887 | * (An example of an inconsistency between match and actions is a flow that | |
1888 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
1889 | * label.) */ | |
1890 | static void | |
1891 | inconsistent_match(enum ofputil_protocol *usable_protocols) | |
1892 | { | |
1893 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
1894 | } | |
1895 | ||
94baabf7 SH |
1896 | /* May modify flow->dl_type, flow->nw_proto and flow->vlan_tci, |
1897 | * caller must restore them. | |
ca287d20 JR |
1898 | * |
1899 | * Modifies some actions, filling in fields that could not be properly set | |
1900 | * without context. */ | |
f25d0cf3 | 1901 | static enum ofperr |
ba2fe8e9 BP |
1902 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, |
1903 | struct flow *flow, ofp_port_t max_ports, | |
7e9f8266 | 1904 | uint8_t table_id, uint8_t n_tables) |
f25d0cf3 BP |
1905 | { |
1906 | const struct ofpact_enqueue *enqueue; | |
b2dd70be | 1907 | const struct mf_field *mf; |
f25d0cf3 BP |
1908 | |
1909 | switch (a->type) { | |
1910 | case OFPACT_OUTPUT: | |
57ad4e9e BP |
1911 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
1912 | max_ports); | |
f25d0cf3 BP |
1913 | |
1914 | case OFPACT_CONTROLLER: | |
1915 | return 0; | |
1916 | ||
1917 | case OFPACT_ENQUEUE: | |
1918 | enqueue = ofpact_get_ENQUEUE(a); | |
4e022ec0 AW |
1919 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) |
1920 | && enqueue->port != OFPP_IN_PORT | |
f25d0cf3 BP |
1921 | && enqueue->port != OFPP_LOCAL) { |
1922 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1923 | } | |
1924 | return 0; | |
1925 | ||
1926 | case OFPACT_OUTPUT_REG: | |
1927 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
1928 | ||
1929 | case OFPACT_BUNDLE: | |
1930 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
1931 | ||
1932 | case OFPACT_SET_VLAN_VID: | |
ca287d20 JR |
1933 | /* Remember if we saw a vlan tag in the flow to aid translating to |
1934 | * OpenFlow 1.1+ if need be. */ | |
1935 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
1936 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
1937 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
1938 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
ba2fe8e9 | 1939 | inconsistent_match(usable_protocols); |
ca287d20 JR |
1940 | } |
1941 | /* Temporary mark that we have a vlan tag. */ | |
1942 | flow->vlan_tci |= htons(VLAN_CFI); | |
1943 | return 0; | |
1944 | ||
f25d0cf3 | 1945 | case OFPACT_SET_VLAN_PCP: |
ca287d20 JR |
1946 | /* Remember if we saw a vlan tag in the flow to aid translating to |
1947 | * OpenFlow 1.1+ if need be. */ | |
1948 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
1949 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
1950 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
1951 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
ba2fe8e9 | 1952 | inconsistent_match(usable_protocols); |
ca287d20 JR |
1953 | } |
1954 | /* Temporary mark that we have a vlan tag. */ | |
1955 | flow->vlan_tci |= htons(VLAN_CFI); | |
8621547c JR |
1956 | return 0; |
1957 | ||
f25d0cf3 | 1958 | case OFPACT_STRIP_VLAN: |
8621547c | 1959 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { |
ba2fe8e9 | 1960 | inconsistent_match(usable_protocols); |
8621547c | 1961 | } |
ca287d20 JR |
1962 | /* Temporary mark that we have no vlan tag. */ |
1963 | flow->vlan_tci = htons(0); | |
8621547c JR |
1964 | return 0; |
1965 | ||
3e34fbdd | 1966 | case OFPACT_PUSH_VLAN: |
8621547c JR |
1967 | if (flow->vlan_tci & htons(VLAN_CFI)) { |
1968 | /* Multiple VLAN headers not supported. */ | |
1969 | return OFPERR_OFPBAC_BAD_TAG; | |
1970 | } | |
ca287d20 JR |
1971 | /* Temporary mark that we have a vlan tag. */ |
1972 | flow->vlan_tci |= htons(VLAN_CFI); | |
8621547c JR |
1973 | return 0; |
1974 | ||
f25d0cf3 BP |
1975 | case OFPACT_SET_ETH_SRC: |
1976 | case OFPACT_SET_ETH_DST: | |
8621547c JR |
1977 | return 0; |
1978 | ||
f25d0cf3 BP |
1979 | case OFPACT_SET_IPV4_SRC: |
1980 | case OFPACT_SET_IPV4_DST: | |
8621547c | 1981 | if (flow->dl_type != htons(ETH_TYPE_IP)) { |
ba2fe8e9 | 1982 | inconsistent_match(usable_protocols); |
8621547c JR |
1983 | } |
1984 | return 0; | |
1985 | ||
04f01c24 | 1986 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 1987 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 1988 | case OFPACT_SET_IP_TTL: |
8621547c JR |
1989 | case OFPACT_DEC_TTL: |
1990 | if (!is_ip_any(flow)) { | |
ba2fe8e9 | 1991 | inconsistent_match(usable_protocols); |
8621547c JR |
1992 | } |
1993 | return 0; | |
1994 | ||
f25d0cf3 | 1995 | case OFPACT_SET_L4_SRC_PORT: |
1e7db674 JR |
1996 | if (!is_ip_any(flow) || |
1997 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP | |
1998 | && flow->nw_proto != IPPROTO_SCTP)) { | |
ba2fe8e9 | 1999 | inconsistent_match(usable_protocols); |
1e7db674 JR |
2000 | } |
2001 | /* Note on which transport protocol the port numbers are set. | |
2002 | * This allows this set action to be converted to an OF1.2 set field | |
2003 | * action. */ | |
2004 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
2005 | return 0; | |
2006 | ||
f25d0cf3 | 2007 | case OFPACT_SET_L4_DST_PORT: |
8621547c JR |
2008 | if (!is_ip_any(flow) || |
2009 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP | |
2010 | && flow->nw_proto != IPPROTO_SCTP)) { | |
ba2fe8e9 | 2011 | inconsistent_match(usable_protocols); |
8621547c | 2012 | } |
1e7db674 JR |
2013 | /* Note on which transport protocol the port numbers are set. |
2014 | * This allows this set action to be converted to an OF1.2 set field | |
2015 | * action. */ | |
2016 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
f25d0cf3 BP |
2017 | return 0; |
2018 | ||
2019 | case OFPACT_REG_MOVE: | |
2020 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
2021 | ||
2022 | case OFPACT_REG_LOAD: | |
500d243d | 2023 | return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow); |
f25d0cf3 | 2024 | |
b2dd70be JR |
2025 | case OFPACT_SET_FIELD: |
2026 | mf = ofpact_get_SET_FIELD(a)->field; | |
2027 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
2028 | if (!mf_are_prereqs_ok(mf, flow) || | |
2029 | (mf->id == MFF_VLAN_VID && !(flow->vlan_tci & htons(VLAN_CFI)))) { | |
2030 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisities", | |
2031 | mf->name); | |
2032 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
2033 | } | |
a6fd70bb JR |
2034 | /* Remember if we saw a vlan tag in the flow to aid translating to |
2035 | * OpenFlow 1.1 if need be. */ | |
2036 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
2037 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
2038 | if (mf->id == MFF_VLAN_TCI) { | |
2039 | /* The set field may add or remove the vlan tag, | |
2040 | * Mark the status temporarily. */ | |
2041 | flow->vlan_tci = ofpact_get_SET_FIELD(a)->value.be16; | |
2042 | } | |
b2dd70be JR |
2043 | return 0; |
2044 | ||
bd85dac1 AZ |
2045 | case OFPACT_STACK_PUSH: |
2046 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow); | |
2047 | ||
2048 | case OFPACT_STACK_POP: | |
2049 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), flow); | |
2050 | ||
097d4939 JR |
2051 | case OFPACT_SET_MPLS_LABEL: |
2052 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 2053 | case OFPACT_SET_MPLS_TTL: |
b676167a | 2054 | case OFPACT_DEC_MPLS_TTL: |
8621547c | 2055 | if (!eth_type_mpls(flow->dl_type)) { |
ba2fe8e9 | 2056 | inconsistent_match(usable_protocols); |
8621547c JR |
2057 | } |
2058 | return 0; | |
2059 | ||
f25d0cf3 BP |
2060 | case OFPACT_SET_TUNNEL: |
2061 | case OFPACT_SET_QUEUE: | |
2062 | case OFPACT_POP_QUEUE: | |
f25d0cf3 BP |
2063 | case OFPACT_RESUBMIT: |
2064 | return 0; | |
2065 | ||
8621547c JR |
2066 | case OFPACT_FIN_TIMEOUT: |
2067 | if (flow->nw_proto != IPPROTO_TCP) { | |
ba2fe8e9 | 2068 | inconsistent_match(usable_protocols); |
8621547c JR |
2069 | } |
2070 | return 0; | |
2071 | ||
f25d0cf3 BP |
2072 | case OFPACT_LEARN: |
2073 | return learn_check(ofpact_get_LEARN(a), flow); | |
2074 | ||
2075 | case OFPACT_MULTIPATH: | |
2076 | return multipath_check(ofpact_get_MULTIPATH(a), flow); | |
2077 | ||
f25d0cf3 BP |
2078 | case OFPACT_NOTE: |
2079 | case OFPACT_EXIT: | |
2080 | return 0; | |
2081 | ||
b02475c5 | 2082 | case OFPACT_PUSH_MPLS: |
eca39bce | 2083 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; |
94baabf7 SH |
2084 | /* The packet is now MPLS and the MPLS payload is opaque. |
2085 | * Thus nothing can be assumed about the network protocol. | |
2086 | * Temporarily mark that we have no nw_proto. */ | |
2087 | flow->nw_proto = 0; | |
b02475c5 SH |
2088 | return 0; |
2089 | ||
2090 | case OFPACT_POP_MPLS: | |
8621547c | 2091 | if (!eth_type_mpls(flow->dl_type)) { |
ba2fe8e9 | 2092 | inconsistent_match(usable_protocols); |
8621547c | 2093 | } |
b3f2fc93 | 2094 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; |
b02475c5 SH |
2095 | return 0; |
2096 | ||
29089a54 RL |
2097 | case OFPACT_SAMPLE: |
2098 | return 0; | |
2099 | ||
b19e8793 | 2100 | case OFPACT_CLEAR_ACTIONS: |
7fdb60a7 SH |
2101 | return 0; |
2102 | ||
2103 | case OFPACT_WRITE_ACTIONS: { | |
ba2fe8e9 BP |
2104 | /* Use a temporary copy of 'usable_protocols' because we can't check |
2105 | * consistency of an action set. */ | |
7fdb60a7 | 2106 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); |
ba2fe8e9 | 2107 | enum ofputil_protocol p = *usable_protocols; |
7fdb60a7 | 2108 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), |
ba2fe8e9 | 2109 | flow, max_ports, table_id, n_tables, &p); |
7fdb60a7 SH |
2110 | } |
2111 | ||
4cceacb9 | 2112 | case OFPACT_WRITE_METADATA: |
8dd54666 IY |
2113 | return 0; |
2114 | ||
9cae45dc JR |
2115 | case OFPACT_METER: { |
2116 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
2117 | if (mid == 0 || mid > OFPM13_MAX) { | |
2118 | return OFPERR_OFPMMFC_INVALID_METER; | |
2119 | } | |
2120 | return 0; | |
2121 | } | |
e3b56933 | 2122 | |
7e9f8266 BP |
2123 | case OFPACT_GOTO_TABLE: { |
2124 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
2125 | if ((table_id != 255 && goto_table <= table_id) | |
2126 | || (n_tables != 255 && goto_table >= n_tables)) { | |
e3b56933 JR |
2127 | return OFPERR_OFPBRC_BAD_TABLE_ID; |
2128 | } | |
2129 | return 0; | |
7e9f8266 | 2130 | } |
e3b56933 | 2131 | |
7395c052 NZ |
2132 | case OFPACT_GROUP: |
2133 | return 0; | |
2134 | ||
f25d0cf3 | 2135 | default: |
428b2edd | 2136 | OVS_NOT_REACHED(); |
f25d0cf3 BP |
2137 | } |
2138 | } | |
2139 | ||
2140 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are | |
2141 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
eca39bce JR |
2142 | * switch with no more than 'max_ports' ports. |
2143 | * | |
ba2fe8e9 BP |
2144 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in |
2145 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
2146 | * example of an inconsistency between match and actions is a flow that does | |
2147 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
2148 | * | |
ca287d20 JR |
2149 | * May annotate ofpacts with information gathered from the 'flow'. |
2150 | * | |
eca39bce | 2151 | * May temporarily modify 'flow', but restores the changes before returning. */ |
f25d0cf3 | 2152 | enum ofperr |
ca287d20 | 2153 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, |
ba2fe8e9 BP |
2154 | struct flow *flow, ofp_port_t max_ports, |
2155 | uint8_t table_id, uint8_t n_tables, | |
2156 | enum ofputil_protocol *usable_protocols) | |
f25d0cf3 | 2157 | { |
ca287d20 | 2158 | struct ofpact *a; |
b02475c5 | 2159 | ovs_be16 dl_type = flow->dl_type; |
ca287d20 | 2160 | ovs_be16 vlan_tci = flow->vlan_tci; |
94baabf7 | 2161 | uint8_t nw_proto = flow->nw_proto; |
eca39bce | 2162 | enum ofperr error = 0; |
f25d0cf3 BP |
2163 | |
2164 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
ba2fe8e9 | 2165 | error = ofpact_check__(usable_protocols, a, flow, |
7e9f8266 | 2166 | max_ports, table_id, n_tables); |
f25d0cf3 | 2167 | if (error) { |
eca39bce | 2168 | break; |
f25d0cf3 BP |
2169 | } |
2170 | } | |
ca287d20 JR |
2171 | /* Restore fields that may have been modified. */ |
2172 | flow->dl_type = dl_type; | |
2173 | flow->vlan_tci = vlan_tci; | |
94baabf7 | 2174 | flow->nw_proto = nw_proto; |
eca39bce | 2175 | return error; |
f25d0cf3 | 2176 | } |
4cceacb9 | 2177 | |
ba2fe8e9 BP |
2178 | /* Like ofpacts_check(), but reports inconsistencies as |
2179 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
2180 | enum ofperr | |
2181 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
2182 | struct flow *flow, ofp_port_t max_ports, | |
2183 | uint8_t table_id, uint8_t n_tables, | |
2184 | enum ofputil_protocol usable_protocols) | |
2185 | { | |
2186 | enum ofputil_protocol p = usable_protocols; | |
2187 | enum ofperr error; | |
2188 | ||
2189 | error = ofpacts_check(ofpacts, ofpacts_len, flow, max_ports, | |
2190 | table_id, n_tables, &p); | |
2191 | return (error ? error | |
2192 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
2193 | : 0); | |
2194 | } | |
2195 | ||
4cceacb9 JS |
2196 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
2197 | * in the appropriate order as defined by the OpenFlow spec. */ | |
2198 | enum ofperr | |
2199 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len) | |
2200 | { | |
2201 | const struct ofpact *a; | |
6813ee7c | 2202 | enum ovs_instruction_type inst; |
4cceacb9 | 2203 | |
b2a27ddc | 2204 | inst = OVSINST_OFPIT13_METER; |
4cceacb9 | 2205 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
6813ee7c BP |
2206 | enum ovs_instruction_type next; |
2207 | ||
084c53de | 2208 | next = ovs_instruction_type_from_ofpact_type(a->type); |
b2a27ddc BP |
2209 | if (a > ofpacts |
2210 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
2211 | ? next < inst | |
2212 | : next <= inst)) { | |
ba0bc9b0 BP |
2213 | const char *name = ovs_instruction_name_from_type(inst); |
2214 | const char *next_name = ovs_instruction_name_from_type(next); | |
6813ee7c BP |
2215 | |
2216 | if (next == inst) { | |
2217 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
2218 | "1.1+ compatibility", name); | |
4cceacb9 | 2219 | } else { |
6813ee7c BP |
2220 | VLOG_WARN("invalid instruction ordering: %s must appear " |
2221 | "before %s, for OpenFlow 1.1+ compatibility", | |
2222 | next_name, name); | |
4cceacb9 | 2223 | } |
6813ee7c | 2224 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; |
4cceacb9 JS |
2225 | } |
2226 | ||
6813ee7c | 2227 | inst = next; |
4cceacb9 JS |
2228 | } |
2229 | ||
2230 | return 0; | |
2231 | } | |
f25d0cf3 BP |
2232 | \f |
2233 | /* Converting ofpacts to Nicira OpenFlow extensions. */ | |
2234 | ||
2235 | static void | |
2236 | ofpact_output_reg_to_nxast(const struct ofpact_output_reg *output_reg, | |
2237 | struct ofpbuf *out) | |
2238 | { | |
2239 | struct nx_action_output_reg *naor = ofputil_put_NXAST_OUTPUT_REG(out); | |
2240 | ||
2241 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
2242 | output_reg->src.n_bits); | |
2243 | naor->src = htonl(output_reg->src.field->nxm_header); | |
2244 | naor->max_len = htons(output_reg->max_len); | |
2245 | } | |
2246 | ||
2247 | static void | |
2248 | ofpact_resubmit_to_nxast(const struct ofpact_resubmit *resubmit, | |
2249 | struct ofpbuf *out) | |
2250 | { | |
2251 | struct nx_action_resubmit *nar; | |
2252 | ||
2253 | if (resubmit->table_id == 0xff | |
2254 | && resubmit->ofpact.compat != OFPUTIL_NXAST_RESUBMIT_TABLE) { | |
2255 | nar = ofputil_put_NXAST_RESUBMIT(out); | |
2256 | } else { | |
2257 | nar = ofputil_put_NXAST_RESUBMIT_TABLE(out); | |
2258 | nar->table = resubmit->table_id; | |
2259 | } | |
4e022ec0 | 2260 | nar->in_port = htons(ofp_to_u16(resubmit->in_port)); |
f25d0cf3 BP |
2261 | } |
2262 | ||
2263 | static void | |
2264 | ofpact_set_tunnel_to_nxast(const struct ofpact_tunnel *tunnel, | |
2265 | struct ofpbuf *out) | |
2266 | { | |
2267 | uint64_t tun_id = tunnel->tun_id; | |
2268 | ||
2269 | if (tun_id <= UINT32_MAX | |
2270 | && tunnel->ofpact.compat != OFPUTIL_NXAST_SET_TUNNEL64) { | |
2271 | ofputil_put_NXAST_SET_TUNNEL(out)->tun_id = htonl(tun_id); | |
2272 | } else { | |
2273 | ofputil_put_NXAST_SET_TUNNEL64(out)->tun_id = htonll(tun_id); | |
2274 | } | |
2275 | } | |
2276 | ||
4cceacb9 JS |
2277 | static void |
2278 | ofpact_write_metadata_to_nxast(const struct ofpact_metadata *om, | |
2279 | struct ofpbuf *out) | |
2280 | { | |
2281 | struct nx_action_write_metadata *nawm; | |
2282 | ||
2283 | nawm = ofputil_put_NXAST_WRITE_METADATA(out); | |
2284 | nawm->metadata = om->metadata; | |
2285 | nawm->mask = om->mask; | |
2286 | } | |
2287 | ||
f25d0cf3 BP |
2288 | static void |
2289 | ofpact_note_to_nxast(const struct ofpact_note *note, struct ofpbuf *out) | |
2290 | { | |
2291 | size_t start_ofs = out->size; | |
2292 | struct nx_action_note *nan; | |
2293 | unsigned int remainder; | |
2294 | unsigned int len; | |
2295 | ||
2296 | nan = ofputil_put_NXAST_NOTE(out); | |
2297 | out->size -= sizeof nan->note; | |
2298 | ||
2299 | ofpbuf_put(out, note->data, note->length); | |
2300 | ||
2301 | len = out->size - start_ofs; | |
2302 | remainder = len % OFP_ACTION_ALIGN; | |
2303 | if (remainder) { | |
2304 | ofpbuf_put_zeros(out, OFP_ACTION_ALIGN - remainder); | |
2305 | } | |
db5a1019 | 2306 | nan = ofpbuf_at(out, start_ofs, sizeof *nan); |
f25d0cf3 BP |
2307 | nan->len = htons(out->size - start_ofs); |
2308 | } | |
2309 | ||
2310 | static void | |
2311 | ofpact_controller_to_nxast(const struct ofpact_controller *oc, | |
2312 | struct ofpbuf *out) | |
2313 | { | |
2314 | struct nx_action_controller *nac; | |
2315 | ||
2316 | nac = ofputil_put_NXAST_CONTROLLER(out); | |
2317 | nac->max_len = htons(oc->max_len); | |
2318 | nac->controller_id = htons(oc->controller_id); | |
2319 | nac->reason = oc->reason; | |
2320 | } | |
2321 | ||
c2d967a5 MM |
2322 | static void |
2323 | ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids, | |
2324 | struct ofpbuf *out) | |
2325 | { | |
2326 | if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) { | |
2327 | ofputil_put_NXAST_DEC_TTL(out); | |
2328 | } else { | |
2329 | struct nx_action_cnt_ids *nac_ids = | |
2330 | ofputil_put_NXAST_DEC_TTL_CNT_IDS(out); | |
2331 | int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN); | |
2332 | ovs_be16 *ids; | |
2333 | size_t i; | |
2334 | ||
2335 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); | |
2336 | nac_ids->n_controllers = htons(oc_ids->n_controllers); | |
2337 | ||
2338 | ids = ofpbuf_put_zeros(out, ids_len); | |
2339 | for (i = 0; i < oc_ids->n_controllers; i++) { | |
2340 | ids[i] = htons(oc_ids->cnt_ids[i]); | |
2341 | } | |
2342 | } | |
2343 | } | |
2344 | ||
f25d0cf3 BP |
2345 | static void |
2346 | ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout, | |
2347 | struct ofpbuf *out) | |
2348 | { | |
2349 | struct nx_action_fin_timeout *naft = ofputil_put_NXAST_FIN_TIMEOUT(out); | |
2350 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
2351 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
2352 | } | |
2353 | ||
29089a54 RL |
2354 | static void |
2355 | ofpact_sample_to_nxast(const struct ofpact_sample *os, | |
2356 | struct ofpbuf *out) | |
2357 | { | |
2358 | struct nx_action_sample *nas; | |
2359 | ||
2360 | nas = ofputil_put_NXAST_SAMPLE(out); | |
2361 | nas->probability = htons(os->probability); | |
2362 | nas->collector_set_id = htonl(os->collector_set_id); | |
2363 | nas->obs_domain_id = htonl(os->obs_domain_id); | |
2364 | nas->obs_point_id = htonl(os->obs_point_id); | |
2365 | } | |
2366 | ||
f25d0cf3 BP |
2367 | static void |
2368 | ofpact_to_nxast(const struct ofpact *a, struct ofpbuf *out) | |
2369 | { | |
2370 | switch (a->type) { | |
2371 | case OFPACT_CONTROLLER: | |
2372 | ofpact_controller_to_nxast(ofpact_get_CONTROLLER(a), out); | |
2373 | break; | |
2374 | ||
2375 | case OFPACT_OUTPUT_REG: | |
2376 | ofpact_output_reg_to_nxast(ofpact_get_OUTPUT_REG(a), out); | |
2377 | break; | |
2378 | ||
2379 | case OFPACT_BUNDLE: | |
2380 | bundle_to_nxast(ofpact_get_BUNDLE(a), out); | |
2381 | break; | |
2382 | ||
2383 | case OFPACT_REG_MOVE: | |
2384 | nxm_reg_move_to_nxast(ofpact_get_REG_MOVE(a), out); | |
2385 | break; | |
2386 | ||
2387 | case OFPACT_REG_LOAD: | |
2388 | nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out); | |
2389 | break; | |
2390 | ||
bd85dac1 AZ |
2391 | case OFPACT_STACK_PUSH: |
2392 | nxm_stack_push_to_nxast(ofpact_get_STACK_PUSH(a), out); | |
2393 | break; | |
2394 | ||
2395 | case OFPACT_STACK_POP: | |
2396 | nxm_stack_pop_to_nxast(ofpact_get_STACK_POP(a), out); | |
2397 | break; | |
2398 | ||
f25d0cf3 | 2399 | case OFPACT_DEC_TTL: |
c2d967a5 | 2400 | ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out); |
f25d0cf3 BP |
2401 | break; |
2402 | ||
097d4939 JR |
2403 | case OFPACT_SET_MPLS_LABEL: |
2404 | ofputil_put_NXAST_SET_MPLS_LABEL(out)->label | |
2405 | = ofpact_get_SET_MPLS_LABEL(a)->label; | |
2406 | break; | |
2407 | ||
2408 | case OFPACT_SET_MPLS_TC: | |
2409 | ofputil_put_NXAST_SET_MPLS_TC(out)->tc | |
2410 | = ofpact_get_SET_MPLS_TC(a)->tc; | |
2411 | break; | |
2412 | ||
0f3f3c3d SH |
2413 | case OFPACT_SET_MPLS_TTL: |
2414 | ofputil_put_NXAST_SET_MPLS_TTL(out)->ttl | |
2415 | = ofpact_get_SET_MPLS_TTL(a)->ttl; | |
2416 | break; | |
2417 | ||
b676167a SH |
2418 | case OFPACT_DEC_MPLS_TTL: |
2419 | ofputil_put_NXAST_DEC_MPLS_TTL(out); | |
2420 | break; | |
2421 | ||
f25d0cf3 BP |
2422 | case OFPACT_SET_TUNNEL: |
2423 | ofpact_set_tunnel_to_nxast(ofpact_get_SET_TUNNEL(a), out); | |
2424 | break; | |
2425 | ||
4cceacb9 JS |
2426 | case OFPACT_WRITE_METADATA: |
2427 | ofpact_write_metadata_to_nxast(ofpact_get_WRITE_METADATA(a), out); | |
2428 | break; | |
2429 | ||
f25d0cf3 BP |
2430 | case OFPACT_SET_QUEUE: |
2431 | ofputil_put_NXAST_SET_QUEUE(out)->queue_id | |
2432 | = htonl(ofpact_get_SET_QUEUE(a)->queue_id); | |
2433 | break; | |
2434 | ||
2435 | case OFPACT_POP_QUEUE: | |
2436 | ofputil_put_NXAST_POP_QUEUE(out); | |
2437 | break; | |
2438 | ||
2439 | case OFPACT_FIN_TIMEOUT: | |
2440 | ofpact_fin_timeout_to_nxast(ofpact_get_FIN_TIMEOUT(a), out); | |
2441 | break; | |
2442 | ||
2443 | case OFPACT_RESUBMIT: | |
2444 | ofpact_resubmit_to_nxast(ofpact_get_RESUBMIT(a), out); | |
2445 | break; | |
2446 | ||
2447 | case OFPACT_LEARN: | |
2448 | learn_to_nxast(ofpact_get_LEARN(a), out); | |
2449 | break; | |
2450 | ||
2451 | case OFPACT_MULTIPATH: | |
2452 | multipath_to_nxast(ofpact_get_MULTIPATH(a), out); | |
2453 | break; | |
2454 | ||
f25d0cf3 BP |
2455 | case OFPACT_NOTE: |
2456 | ofpact_note_to_nxast(ofpact_get_NOTE(a), out); | |
2457 | break; | |
2458 | ||
2459 | case OFPACT_EXIT: | |
2460 | ofputil_put_NXAST_EXIT(out); | |
2461 | break; | |
2462 | ||
b02475c5 SH |
2463 | case OFPACT_PUSH_MPLS: |
2464 | ofputil_put_NXAST_PUSH_MPLS(out)->ethertype = | |
2465 | ofpact_get_PUSH_MPLS(a)->ethertype; | |
2466 | break; | |
2467 | ||
2468 | case OFPACT_POP_MPLS: | |
2469 | ofputil_put_NXAST_POP_MPLS(out)->ethertype = | |
2470 | ofpact_get_POP_MPLS(a)->ethertype; | |
2471 | break; | |
2472 | ||
29089a54 RL |
2473 | case OFPACT_SAMPLE: |
2474 | ofpact_sample_to_nxast(ofpact_get_SAMPLE(a), out); | |
2475 | break; | |
2476 | ||
7395c052 | 2477 | case OFPACT_GROUP: |
f25d0cf3 BP |
2478 | case OFPACT_OUTPUT: |
2479 | case OFPACT_ENQUEUE: | |
2480 | case OFPACT_SET_VLAN_VID: | |
2481 | case OFPACT_SET_VLAN_PCP: | |
2482 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 2483 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
2484 | case OFPACT_SET_ETH_SRC: |
2485 | case OFPACT_SET_ETH_DST: | |
2486 | case OFPACT_SET_IPV4_SRC: | |
2487 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 2488 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 2489 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 2490 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
2491 | case OFPACT_SET_L4_SRC_PORT: |
2492 | case OFPACT_SET_L4_DST_PORT: | |
7fdb60a7 | 2493 | case OFPACT_WRITE_ACTIONS: |
b19e8793 | 2494 | case OFPACT_CLEAR_ACTIONS: |
8dd54666 | 2495 | case OFPACT_GOTO_TABLE: |
638a19b0 | 2496 | case OFPACT_METER: |
e3f8f887 | 2497 | case OFPACT_SET_FIELD: |
428b2edd | 2498 | OVS_NOT_REACHED(); |
f25d0cf3 BP |
2499 | } |
2500 | } | |
2501 | \f | |
2502 | /* Converting ofpacts to OpenFlow 1.0. */ | |
2503 | ||
2504 | static void | |
2505 | ofpact_output_to_openflow10(const struct ofpact_output *output, | |
2506 | struct ofpbuf *out) | |
2507 | { | |
d01c980f | 2508 | struct ofp10_action_output *oao; |
f25d0cf3 BP |
2509 | |
2510 | oao = ofputil_put_OFPAT10_OUTPUT(out); | |
4e022ec0 | 2511 | oao->port = htons(ofp_to_u16(output->port)); |
f25d0cf3 BP |
2512 | oao->max_len = htons(output->max_len); |
2513 | } | |
2514 | ||
2515 | static void | |
2516 | ofpact_enqueue_to_openflow10(const struct ofpact_enqueue *enqueue, | |
2517 | struct ofpbuf *out) | |
2518 | { | |
31a9e63f | 2519 | struct ofp10_action_enqueue *oae; |
f25d0cf3 BP |
2520 | |
2521 | oae = ofputil_put_OFPAT10_ENQUEUE(out); | |
4e022ec0 | 2522 | oae->port = htons(ofp_to_u16(enqueue->port)); |
f25d0cf3 BP |
2523 | oae->queue_id = htonl(enqueue->queue); |
2524 | } | |
2525 | ||
2526 | static void | |
2527 | ofpact_to_openflow10(const struct ofpact *a, struct ofpbuf *out) | |
2528 | { | |
2529 | switch (a->type) { | |
2530 | case OFPACT_OUTPUT: | |
2531 | ofpact_output_to_openflow10(ofpact_get_OUTPUT(a), out); | |
2532 | break; | |
2533 | ||
2534 | case OFPACT_ENQUEUE: | |
2535 | ofpact_enqueue_to_openflow10(ofpact_get_ENQUEUE(a), out); | |
2536 | break; | |
2537 | ||
2538 | case OFPACT_SET_VLAN_VID: | |
2539 | ofputil_put_OFPAT10_SET_VLAN_VID(out)->vlan_vid | |
2540 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
2541 | break; | |
2542 | ||
2543 | case OFPACT_SET_VLAN_PCP: | |
2544 | ofputil_put_OFPAT10_SET_VLAN_PCP(out)->vlan_pcp | |
2545 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
2546 | break; | |
2547 | ||
2548 | case OFPACT_STRIP_VLAN: | |
2549 | ofputil_put_OFPAT10_STRIP_VLAN(out); | |
2550 | break; | |
2551 | ||
2552 | case OFPACT_SET_ETH_SRC: | |
2553 | memcpy(ofputil_put_OFPAT10_SET_DL_SRC(out)->dl_addr, | |
2554 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
2555 | break; | |
2556 | ||
2557 | case OFPACT_SET_ETH_DST: | |
2558 | memcpy(ofputil_put_OFPAT10_SET_DL_DST(out)->dl_addr, | |
2559 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
2560 | break; | |
2561 | ||
2562 | case OFPACT_SET_IPV4_SRC: | |
2563 | ofputil_put_OFPAT10_SET_NW_SRC(out)->nw_addr | |
2564 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
2565 | break; | |
2566 | ||
2567 | case OFPACT_SET_IPV4_DST: | |
2568 | ofputil_put_OFPAT10_SET_NW_DST(out)->nw_addr | |
2569 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
2570 | break; | |
2571 | ||
04f01c24 | 2572 | case OFPACT_SET_IP_DSCP: |
f25d0cf3 | 2573 | ofputil_put_OFPAT10_SET_NW_TOS(out)->nw_tos |
04f01c24 | 2574 | = ofpact_get_SET_IP_DSCP(a)->dscp; |
f25d0cf3 BP |
2575 | break; |
2576 | ||
2577 | case OFPACT_SET_L4_SRC_PORT: | |
2578 | ofputil_put_OFPAT10_SET_TP_SRC(out)->tp_port | |
2579 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
2580 | break; | |
2581 | ||
2582 | case OFPACT_SET_L4_DST_PORT: | |
2583 | ofputil_put_OFPAT10_SET_TP_DST(out)->tp_port | |
2584 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
2585 | break; | |
2586 | ||
3e34fbdd | 2587 | case OFPACT_PUSH_VLAN: |
ca287d20 JR |
2588 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should |
2589 | * follow this action. */ | |
2590 | break; | |
2591 | ||
b19e8793 | 2592 | case OFPACT_CLEAR_ACTIONS: |
7fdb60a7 | 2593 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 2594 | case OFPACT_GOTO_TABLE: |
638a19b0 | 2595 | case OFPACT_METER: |
5dca28b5 | 2596 | /* XXX */ |
8dd54666 IY |
2597 | break; |
2598 | ||
7395c052 NZ |
2599 | case OFPACT_GROUP: |
2600 | break; | |
2601 | ||
e3f8f887 JR |
2602 | case OFPACT_SET_FIELD: |
2603 | set_field_to_openflow(ofpact_get_SET_FIELD(a), out); | |
2604 | break; | |
2605 | ||
f25d0cf3 BP |
2606 | case OFPACT_CONTROLLER: |
2607 | case OFPACT_OUTPUT_REG: | |
2608 | case OFPACT_BUNDLE: | |
2609 | case OFPACT_REG_MOVE: | |
2610 | case OFPACT_REG_LOAD: | |
bd85dac1 AZ |
2611 | case OFPACT_STACK_PUSH: |
2612 | case OFPACT_STACK_POP: | |
f25d0cf3 | 2613 | case OFPACT_DEC_TTL: |
ff14eb7a | 2614 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 2615 | case OFPACT_SET_IP_TTL: |
097d4939 JR |
2616 | case OFPACT_SET_MPLS_LABEL: |
2617 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 2618 | case OFPACT_SET_MPLS_TTL: |
b676167a | 2619 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 2620 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 2621 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
2622 | case OFPACT_SET_QUEUE: |
2623 | case OFPACT_POP_QUEUE: | |
2624 | case OFPACT_FIN_TIMEOUT: | |
2625 | case OFPACT_RESUBMIT: | |
2626 | case OFPACT_LEARN: | |
2627 | case OFPACT_MULTIPATH: | |
f25d0cf3 BP |
2628 | case OFPACT_NOTE: |
2629 | case OFPACT_EXIT: | |
b02475c5 SH |
2630 | case OFPACT_PUSH_MPLS: |
2631 | case OFPACT_POP_MPLS: | |
29089a54 | 2632 | case OFPACT_SAMPLE: |
f25d0cf3 BP |
2633 | ofpact_to_nxast(a, out); |
2634 | break; | |
2635 | } | |
2636 | } | |
f25d0cf3 | 2637 | \f |
d01c980f BP |
2638 | /* Converting ofpacts to OpenFlow 1.1. */ |
2639 | ||
2640 | static void | |
2641 | ofpact_output_to_openflow11(const struct ofpact_output *output, | |
2642 | struct ofpbuf *out) | |
2643 | { | |
2644 | struct ofp11_action_output *oao; | |
2645 | ||
2646 | oao = ofputil_put_OFPAT11_OUTPUT(out); | |
2647 | oao->port = ofputil_port_to_ofp11(output->port); | |
2648 | oao->max_len = htons(output->max_len); | |
2649 | } | |
2650 | ||
99086062 BP |
2651 | static void |
2652 | ofpact_dec_ttl_to_openflow11(const struct ofpact_cnt_ids *dec_ttl, | |
2653 | struct ofpbuf *out) | |
2654 | { | |
2655 | if (dec_ttl->n_controllers == 1 && dec_ttl->cnt_ids[0] == 0 | |
2656 | && (!dec_ttl->ofpact.compat || | |
2657 | dec_ttl->ofpact.compat == OFPUTIL_OFPAT11_DEC_NW_TTL)) { | |
2658 | ofputil_put_OFPAT11_DEC_NW_TTL(out); | |
2659 | } else { | |
2660 | ofpact_dec_ttl_to_nxast(dec_ttl, out); | |
2661 | } | |
2662 | } | |
2663 | ||
d01c980f BP |
2664 | static void |
2665 | ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out) | |
2666 | { | |
2667 | switch (a->type) { | |
2668 | case OFPACT_OUTPUT: | |
2669 | return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out); | |
2670 | ||
2671 | case OFPACT_ENQUEUE: | |
2672 | /* XXX */ | |
2673 | break; | |
2674 | ||
2675 | case OFPACT_SET_VLAN_VID: | |
ca287d20 JR |
2676 | /* Push a VLAN tag, if one was not seen at action validation time. */ |
2677 | if (!ofpact_get_SET_VLAN_VID(a)->flow_has_vlan | |
2678 | && ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
2679 | ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype | |
2680 | = htons(ETH_TYPE_VLAN_8021Q); | |
2681 | } | |
d01c980f BP |
2682 | ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid |
2683 | = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid); | |
2684 | break; | |
2685 | ||
2686 | case OFPACT_SET_VLAN_PCP: | |
ca287d20 JR |
2687 | /* Push a VLAN tag, if one was not seen at action validation time. */ |
2688 | if (!ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan | |
2689 | && ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
2690 | ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype | |
2691 | = htons(ETH_TYPE_VLAN_8021Q); | |
2692 | } | |
d01c980f BP |
2693 | ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp |
2694 | = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
2695 | break; | |
2696 | ||
2697 | case OFPACT_STRIP_VLAN: | |
8e61c110 | 2698 | ofputil_put_OFPAT11_POP_VLAN(out); |
d01c980f BP |
2699 | break; |
2700 | ||
3e34fbdd | 2701 | case OFPACT_PUSH_VLAN: |
5dca28b5 | 2702 | /* XXX ETH_TYPE_VLAN_8021AD case */ |
3e34fbdd IY |
2703 | ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype = |
2704 | htons(ETH_TYPE_VLAN_8021Q); | |
2705 | break; | |
2706 | ||
276c4e7a SH |
2707 | case OFPACT_SET_QUEUE: |
2708 | ofputil_put_OFPAT11_SET_QUEUE(out)->queue_id | |
2709 | = htonl(ofpact_get_SET_QUEUE(a)->queue_id); | |
2710 | break; | |
2711 | ||
d01c980f BP |
2712 | case OFPACT_SET_ETH_SRC: |
2713 | memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr, | |
2714 | ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
2715 | break; | |
2716 | ||
2717 | case OFPACT_SET_ETH_DST: | |
2718 | memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr, | |
2719 | ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
2720 | break; | |
2721 | ||
2722 | case OFPACT_SET_IPV4_SRC: | |
2723 | ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr | |
2724 | = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
2725 | break; | |
2726 | ||
2727 | case OFPACT_SET_IPV4_DST: | |
2728 | ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr | |
2729 | = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
2730 | break; | |
2731 | ||
04f01c24 | 2732 | case OFPACT_SET_IP_DSCP: |
d01c980f | 2733 | ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos |
04f01c24 | 2734 | = ofpact_get_SET_IP_DSCP(a)->dscp; |
d01c980f BP |
2735 | break; |
2736 | ||
ff14eb7a JR |
2737 | case OFPACT_SET_IP_ECN: |
2738 | ofputil_put_OFPAT11_SET_NW_ECN(out)->nw_ecn | |
2739 | = ofpact_get_SET_IP_ECN(a)->ecn; | |
2740 | break; | |
2741 | ||
0c20dbe4 JR |
2742 | case OFPACT_SET_IP_TTL: |
2743 | ofputil_put_OFPAT11_SET_NW_TTL(out)->nw_ttl | |
2744 | = ofpact_get_SET_IP_TTL(a)->ttl; | |
2745 | break; | |
2746 | ||
d01c980f BP |
2747 | case OFPACT_SET_L4_SRC_PORT: |
2748 | ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port | |
2749 | = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); | |
2750 | break; | |
2751 | ||
2752 | case OFPACT_SET_L4_DST_PORT: | |
2753 | ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port | |
2754 | = htons(ofpact_get_SET_L4_DST_PORT(a)->port); | |
2755 | break; | |
2756 | ||
7bcb1506 | 2757 | case OFPACT_DEC_TTL: |
99086062 | 2758 | ofpact_dec_ttl_to_openflow11(ofpact_get_DEC_TTL(a), out); |
7bcb1506 IY |
2759 | break; |
2760 | ||
097d4939 JR |
2761 | case OFPACT_SET_MPLS_LABEL: |
2762 | ofputil_put_OFPAT11_SET_MPLS_LABEL(out)->mpls_label | |
2763 | = ofpact_get_SET_MPLS_LABEL(a)->label; | |
2764 | break; | |
2765 | ||
2766 | case OFPACT_SET_MPLS_TC: | |
2767 | ofputil_put_OFPAT11_SET_MPLS_TC(out)->mpls_tc | |
2768 | = ofpact_get_SET_MPLS_TC(a)->tc; | |
2769 | break; | |
2770 | ||
0f3f3c3d SH |
2771 | case OFPACT_SET_MPLS_TTL: |
2772 | ofputil_put_OFPAT11_SET_MPLS_TTL(out)->mpls_ttl | |
2773 | = ofpact_get_SET_MPLS_TTL(a)->ttl; | |
2774 | break; | |
2775 | ||
b676167a SH |
2776 | case OFPACT_DEC_MPLS_TTL: |
2777 | ofputil_put_OFPAT11_DEC_MPLS_TTL(out); | |
2778 | break; | |
2779 | ||
4cceacb9 JS |
2780 | case OFPACT_WRITE_METADATA: |
2781 | /* OpenFlow 1.1 uses OFPIT_WRITE_METADATA to express this action. */ | |
2782 | break; | |
2783 | ||
b02475c5 SH |
2784 | case OFPACT_PUSH_MPLS: |
2785 | ofputil_put_OFPAT11_PUSH_MPLS(out)->ethertype = | |
2786 | ofpact_get_PUSH_MPLS(a)->ethertype; | |
2787 | break; | |
2788 | ||
2789 | case OFPACT_POP_MPLS: | |
2790 | ofputil_put_OFPAT11_POP_MPLS(out)->ethertype = | |
2791 | ofpact_get_POP_MPLS(a)->ethertype; | |
2792 | ||
2793 | break; | |
2794 | ||
b19e8793 | 2795 | case OFPACT_CLEAR_ACTIONS: |
7fdb60a7 | 2796 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 2797 | case OFPACT_GOTO_TABLE: |
638a19b0 | 2798 | case OFPACT_METER: |
428b2edd | 2799 | OVS_NOT_REACHED(); |
8dd54666 | 2800 | |
7395c052 NZ |
2801 | case OFPACT_GROUP: |
2802 | ofputil_put_OFPAT11_GROUP(out)->group_id = | |
2803 | htonl(ofpact_get_GROUP(a)->group_id); | |
2804 | break; | |
2805 | ||
e3f8f887 JR |
2806 | case OFPACT_SET_FIELD: |
2807 | set_field_to_openflow(ofpact_get_SET_FIELD(a), out); | |
2808 | break; | |
2809 | ||
d01c980f BP |
2810 | case OFPACT_CONTROLLER: |
2811 | case OFPACT_OUTPUT_REG: | |
2812 | case OFPACT_BUNDLE: | |
2813 | case OFPACT_REG_MOVE: | |
2814 | case OFPACT_REG_LOAD: | |
bd85dac1 AZ |
2815 | case OFPACT_STACK_PUSH: |
2816 | case OFPACT_STACK_POP: | |
d01c980f | 2817 | case OFPACT_SET_TUNNEL: |
d01c980f BP |
2818 | case OFPACT_POP_QUEUE: |
2819 | case OFPACT_FIN_TIMEOUT: | |
2820 | case OFPACT_RESUBMIT: | |
2821 | case OFPACT_LEARN: | |
2822 | case OFPACT_MULTIPATH: | |
d01c980f BP |
2823 | case OFPACT_NOTE: |
2824 | case OFPACT_EXIT: | |
29089a54 | 2825 | case OFPACT_SAMPLE: |
d01c980f BP |
2826 | ofpact_to_nxast(a, out); |
2827 | break; | |
2828 | } | |
2829 | } | |
2830 | ||
1e7db674 | 2831 | /* Output deprecated set actions as set_field actions. */ |
e3f8f887 JR |
2832 | static void |
2833 | ofpact_to_openflow12(const struct ofpact *a, struct ofpbuf *out) | |
2834 | { | |
1e7db674 JR |
2835 | enum mf_field_id field; |
2836 | union mf_value value; | |
2837 | struct ofpact_l4_port *l4port; | |
2838 | uint8_t proto; | |
2839 | ||
2840 | /* | |
2841 | * Convert actions deprecated in OpenFlow 1.2 to Set Field actions, | |
2842 | * if possible. | |
2843 | */ | |
2844 | switch ((int)a->type) { | |
2845 | case OFPACT_SET_VLAN_VID: | |
2846 | case OFPACT_SET_VLAN_PCP: | |
2847 | case OFPACT_SET_ETH_SRC: | |
2848 | case OFPACT_SET_ETH_DST: | |
2849 | case OFPACT_SET_IPV4_SRC: | |
2850 | case OFPACT_SET_IPV4_DST: | |
2851 | case OFPACT_SET_IP_DSCP: | |
2852 | case OFPACT_SET_IP_ECN: | |
2853 | case OFPACT_SET_L4_SRC_PORT: | |
2854 | case OFPACT_SET_L4_DST_PORT: | |
097d4939 JR |
2855 | case OFPACT_SET_MPLS_LABEL: |
2856 | case OFPACT_SET_MPLS_TC: | |
1e7db674 JR |
2857 | case OFPACT_SET_TUNNEL: /* Convert to a set_field, too. */ |
2858 | ||
2859 | switch ((int)a->type) { | |
2860 | ||
2861 | case OFPACT_SET_VLAN_VID: | |
2862 | if (!ofpact_get_SET_VLAN_VID(a)->flow_has_vlan && | |
2863 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
2864 | ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype | |
2865 | = htons(ETH_TYPE_VLAN_8021Q); | |
2866 | } | |
2867 | field = MFF_VLAN_VID; | |
2868 | /* Set-Field on OXM_OF_VLAN_VID must have OFPVID_PRESENT set. */ | |
2869 | value.be16 = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid | |
2870 | | OFPVID12_PRESENT); | |
2871 | break; | |
2872 | ||
2873 | case OFPACT_SET_VLAN_PCP: | |
2874 | if (!ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan && | |
2875 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
2876 | ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype | |
2877 | = htons(ETH_TYPE_VLAN_8021Q); | |
2878 | } | |
2879 | field = MFF_VLAN_PCP; | |
2880 | value.u8 = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp; | |
2881 | break; | |
2882 | ||
2883 | case OFPACT_SET_ETH_SRC: | |
2884 | field = MFF_ETH_SRC; | |
2885 | memcpy(value.mac, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN); | |
2886 | break; | |
2887 | ||
2888 | case OFPACT_SET_ETH_DST: | |
2889 | field = MFF_ETH_DST; | |
2890 | memcpy(value.mac, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN); | |
2891 | break; | |
2892 | ||
2893 | case OFPACT_SET_IPV4_SRC: | |
2894 | field = MFF_IPV4_SRC; | |
2895 | value.be32 = ofpact_get_SET_IPV4_SRC(a)->ipv4; | |
2896 | break; | |
2897 | ||
2898 | case OFPACT_SET_IPV4_DST: | |
2899 | field = MFF_IPV4_DST; | |
2900 | value.be32 = ofpact_get_SET_IPV4_DST(a)->ipv4; | |
2901 | break; | |
2902 | ||
2903 | case OFPACT_SET_IP_DSCP: | |
2904 | field = MFF_IP_DSCP_SHIFTED; /* OXM_OF_IP_DSCP */ | |
2905 | value.u8 = ofpact_get_SET_IP_DSCP(a)->dscp >> 2; | |
2906 | break; | |
2907 | ||
2908 | case OFPACT_SET_IP_ECN: | |
2909 | field = MFF_IP_ECN; | |
2910 | value.u8 = ofpact_get_SET_IP_ECN(a)->ecn; | |
2911 | break; | |
2912 | ||
2913 | case OFPACT_SET_L4_SRC_PORT: | |
2914 | /* We keep track of IP protocol while translating actions to be | |
2915 | * able to translate to the proper OXM type. | |
2916 | * If the IP protocol type is unknown, the translation cannot | |
2917 | * be performed and we will send the action using the original | |
2918 | * action type. */ | |
2919 | l4port = ofpact_get_SET_L4_SRC_PORT(a); | |
2920 | proto = l4port->flow_ip_proto; | |
2921 | field = proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2922 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2923 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2924 | : MFF_N_IDS; /* RFC: Unknown IP proto, do not translate. */ | |
2925 | value.be16 = htons(l4port->port); | |
2926 | break; | |
2927 | ||
2928 | case OFPACT_SET_L4_DST_PORT: | |
2929 | l4port = ofpact_get_SET_L4_DST_PORT(a); | |
2930 | proto = l4port->flow_ip_proto; | |
2931 | field = proto == IPPROTO_TCP ? MFF_TCP_DST | |
2932 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2933 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2934 | : MFF_N_IDS; /* RFC: Unknown IP proto, do not translate. */ | |
2935 | value.be16 = htons(l4port->port); | |
2936 | break; | |
2937 | ||
097d4939 JR |
2938 | case OFPACT_SET_MPLS_LABEL: |
2939 | field = MFF_MPLS_LABEL; | |
2940 | value.be32 = ofpact_get_SET_MPLS_LABEL(a)->label; | |
2941 | break; | |
2942 | ||
2943 | case OFPACT_SET_MPLS_TC: | |
2944 | field = MFF_MPLS_TC; | |
2945 | value.u8 = ofpact_get_SET_MPLS_TC(a)->tc; | |
2946 | break; | |
2947 | ||
1e7db674 JR |
2948 | case OFPACT_SET_TUNNEL: |
2949 | field = MFF_TUN_ID; | |
2950 | value.be64 = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); | |
2951 | break; | |
2952 | ||
2953 | default: | |
2954 | field = MFF_N_IDS; | |
2955 | } | |
2956 | ||
2957 | /* Put the action out as a set field action, if possible. */ | |
2958 | if (field < MFF_N_IDS) { | |
2959 | uint64_t ofpacts_stub[128 / 8]; | |
2960 | struct ofpbuf sf_act; | |
2961 | struct ofpact_set_field *sf; | |
2962 | ||
2963 | ofpbuf_use_stub(&sf_act, ofpacts_stub, sizeof ofpacts_stub); | |
2964 | sf = ofpact_put_SET_FIELD(&sf_act); | |
2965 | sf->field = mf_from_id(field); | |
2966 | memcpy(&sf->value, &value, sf->field->n_bytes); | |
2967 | set_field_to_openflow(sf, out); | |
2968 | return; | |
2969 | } | |
2970 | } | |
2971 | ||
e3f8f887 JR |
2972 | ofpact_to_openflow11(a, out); |
2973 | } | |
2974 | ||
2975 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
2976 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 2977 | * 'openflow'. */ |
a07c15bc | 2978 | size_t |
e3f8f887 JR |
2979 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
2980 | struct ofpbuf *openflow, | |
2981 | enum ofp_version ofp_version) | |
d01c980f BP |
2982 | { |
2983 | const struct ofpact *a; | |
a07c15bc | 2984 | size_t start_size = openflow->size; |
d01c980f | 2985 | |
e3f8f887 JR |
2986 | void (*translate)(const struct ofpact *a, struct ofpbuf *out) = |
2987 | (ofp_version == OFP10_VERSION) ? ofpact_to_openflow10 : | |
2988 | (ofp_version == OFP11_VERSION) ? ofpact_to_openflow11 : | |
2989 | ofpact_to_openflow12; | |
2990 | ||
d01c980f | 2991 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
e3f8f887 | 2992 | translate(a, openflow); |
d01c980f | 2993 | } |
a07c15bc | 2994 | return openflow->size - start_size; |
d01c980f BP |
2995 | } |
2996 | ||
8dd54666 IY |
2997 | static void |
2998 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) | |
d01c980f BP |
2999 | { |
3000 | struct ofp11_instruction_actions *oia; | |
d01c980f BP |
3001 | |
3002 | /* Update the instruction's length (or, if it's empty, delete it). */ | |
3003 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); | |
3004 | if (openflow->size > ofs + sizeof *oia) { | |
3005 | oia->len = htons(openflow->size - ofs); | |
3006 | } else { | |
3007 | openflow->size = ofs; | |
3008 | } | |
3009 | } | |
8dd54666 IY |
3010 | |
3011 | void | |
e3f8f887 JR |
3012 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
3013 | size_t ofpacts_len, | |
3014 | struct ofpbuf *openflow, | |
3015 | enum ofp_version ofp_version) | |
8dd54666 IY |
3016 | { |
3017 | const struct ofpact *a; | |
3018 | ||
e3f8f887 JR |
3019 | ovs_assert(ofp_version >= OFP11_VERSION); |
3020 | ||
8dd54666 | 3021 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
084c53de BP |
3022 | switch (ovs_instruction_type_from_ofpact_type(a->type)) { |
3023 | case OVSINST_OFPIT11_CLEAR_ACTIONS: | |
f606c7e9 | 3024 | instruction_put_OFPIT11_CLEAR_ACTIONS(openflow); |
084c53de | 3025 | break; |
8dd54666 | 3026 | |
084c53de BP |
3027 | case OVSINST_OFPIT11_GOTO_TABLE: { |
3028 | struct ofp11_instruction_goto_table *oigt; | |
8dd54666 IY |
3029 | oigt = instruction_put_OFPIT11_GOTO_TABLE(openflow); |
3030 | oigt->table_id = ofpact_get_GOTO_TABLE(a)->table_id; | |
3031 | memset(oigt->pad, 0, sizeof oigt->pad); | |
084c53de BP |
3032 | break; |
3033 | } | |
3034 | ||
3035 | case OVSINST_OFPIT11_WRITE_METADATA: { | |
4cceacb9 JS |
3036 | const struct ofpact_metadata *om; |
3037 | struct ofp11_instruction_write_metadata *oiwm; | |
3038 | ||
3039 | om = ofpact_get_WRITE_METADATA(a); | |
3040 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(openflow); | |
3041 | oiwm->metadata = om->metadata; | |
3042 | oiwm->metadata_mask = om->mask; | |
084c53de BP |
3043 | break; |
3044 | } | |
3045 | ||
e3f8f887 JR |
3046 | case OVSINST_OFPIT13_METER: |
3047 | if (ofp_version >= OFP13_VERSION) { | |
3048 | const struct ofpact_meter *om; | |
3049 | struct ofp13_instruction_meter *oim; | |
638a19b0 | 3050 | |
e3f8f887 JR |
3051 | om = ofpact_get_METER(a); |
3052 | oim = instruction_put_OFPIT13_METER(openflow); | |
3053 | oim->meter_id = htonl(om->meter_id); | |
3054 | } | |
084c53de | 3055 | break; |
084c53de BP |
3056 | |
3057 | case OVSINST_OFPIT11_APPLY_ACTIONS: { | |
8dd54666 IY |
3058 | const size_t ofs = openflow->size; |
3059 | const size_t ofpacts_len_left = | |
3060 | (uint8_t*)ofpact_end(ofpacts, ofpacts_len) - (uint8_t*)a; | |
3061 | const struct ofpact *action; | |
3062 | const struct ofpact *processed = a; | |
3063 | ||
3064 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
3065 | OFPACT_FOR_EACH(action, a, ofpacts_len_left) { | |
084c53de BP |
3066 | if (ovs_instruction_type_from_ofpact_type(action->type) |
3067 | != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
8dd54666 IY |
3068 | break; |
3069 | } | |
e3f8f887 JR |
3070 | if (ofp_version == OFP11_VERSION) { |
3071 | ofpact_to_openflow11(action, openflow); | |
3072 | } else { | |
3073 | ofpact_to_openflow12(action, openflow); | |
3074 | } | |
8dd54666 IY |
3075 | processed = action; |
3076 | } | |
3077 | ofpacts_update_instruction_actions(openflow, ofs); | |
3078 | a = processed; | |
084c53de BP |
3079 | break; |
3080 | } | |
3081 | ||
7fdb60a7 SH |
3082 | case OVSINST_OFPIT11_WRITE_ACTIONS: { |
3083 | const size_t ofs = openflow->size; | |
3084 | const struct ofpact_nest *on; | |
3085 | ||
3086 | on = ofpact_get_WRITE_ACTIONS(a); | |
3087 | instruction_put_OFPIT11_WRITE_ACTIONS(openflow); | |
e3f8f887 JR |
3088 | ofpacts_put_openflow_actions(on->actions, |
3089 | ofpact_nest_get_action_len(on), | |
3090 | openflow, ofp_version); | |
7fdb60a7 SH |
3091 | ofpacts_update_instruction_actions(openflow, ofs); |
3092 | ||
3093 | break; | |
3094 | } | |
8dd54666 IY |
3095 | } |
3096 | } | |
3097 | } | |
d01c980f | 3098 | \f |
f25d0cf3 BP |
3099 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
3100 | static bool | |
4e022ec0 | 3101 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
3102 | { |
3103 | switch (ofpact->type) { | |
3104 | case OFPACT_OUTPUT: | |
3105 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
3106 | case OFPACT_ENQUEUE: | |
3107 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
3108 | case OFPACT_CONTROLLER: | |
3109 | return port == OFPP_CONTROLLER; | |
3110 | ||
3111 | case OFPACT_OUTPUT_REG: | |
3112 | case OFPACT_BUNDLE: | |
3113 | case OFPACT_SET_VLAN_VID: | |
3114 | case OFPACT_SET_VLAN_PCP: | |
3115 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 3116 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
3117 | case OFPACT_SET_ETH_SRC: |
3118 | case OFPACT_SET_ETH_DST: | |
3119 | case OFPACT_SET_IPV4_SRC: | |
3120 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 3121 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 3122 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 3123 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
3124 | case OFPACT_SET_L4_SRC_PORT: |
3125 | case OFPACT_SET_L4_DST_PORT: | |
3126 | case OFPACT_REG_MOVE: | |
3127 | case OFPACT_REG_LOAD: | |
b2dd70be | 3128 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
3129 | case OFPACT_STACK_PUSH: |
3130 | case OFPACT_STACK_POP: | |
f25d0cf3 | 3131 | case OFPACT_DEC_TTL: |
097d4939 JR |
3132 | case OFPACT_SET_MPLS_LABEL: |
3133 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 3134 | case OFPACT_SET_MPLS_TTL: |
b676167a | 3135 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 3136 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 3137 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
3138 | case OFPACT_SET_QUEUE: |
3139 | case OFPACT_POP_QUEUE: | |
3140 | case OFPACT_FIN_TIMEOUT: | |
3141 | case OFPACT_RESUBMIT: | |
3142 | case OFPACT_LEARN: | |
3143 | case OFPACT_MULTIPATH: | |
f25d0cf3 BP |
3144 | case OFPACT_NOTE: |
3145 | case OFPACT_EXIT: | |
b02475c5 SH |
3146 | case OFPACT_PUSH_MPLS: |
3147 | case OFPACT_POP_MPLS: | |
29089a54 | 3148 | case OFPACT_SAMPLE: |
b19e8793 | 3149 | case OFPACT_CLEAR_ACTIONS: |
7fdb60a7 | 3150 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 3151 | case OFPACT_GOTO_TABLE: |
638a19b0 | 3152 | case OFPACT_METER: |
7395c052 | 3153 | case OFPACT_GROUP: |
f25d0cf3 BP |
3154 | default: |
3155 | return false; | |
3156 | } | |
3157 | } | |
3158 | ||
3159 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
3160 | * to 'port', false otherwise. */ | |
3161 | bool | |
3162 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 3163 | ofp_port_t port) |
f25d0cf3 BP |
3164 | { |
3165 | const struct ofpact *a; | |
3166 | ||
3167 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
3168 | if (ofpact_outputs_to_port(a, port)) { | |
3169 | return true; | |
3170 | } | |
3171 | } | |
3172 | ||
3173 | return false; | |
3174 | } | |
3175 | ||
7395c052 NZ |
3176 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
3177 | * to 'group', false otherwise. */ | |
3178 | bool | |
3179 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
3180 | uint32_t group_id) | |
3181 | { | |
3182 | const struct ofpact *a; | |
3183 | ||
3184 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
3185 | if (a->type == OFPACT_GROUP | |
3186 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
3187 | return true; | |
3188 | } | |
3189 | } | |
3190 | ||
3191 | return false; | |
3192 | } | |
3193 | ||
f25d0cf3 BP |
3194 | bool |
3195 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
3196 | const struct ofpact *b, size_t b_len) | |
3197 | { | |
3198 | return a_len == b_len && !memcmp(a, b, a_len); | |
3199 | } | |
d6fb622d BP |
3200 | |
3201 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of | |
3202 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
3203 | * | |
3204 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
3205 | * ofpacts_verify()). */ | |
3206 | uint32_t | |
3207 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
3208 | { | |
3209 | const struct ofpact *a; | |
3210 | ||
3211 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
3212 | enum ovs_instruction_type inst; | |
3213 | ||
3214 | inst = ovs_instruction_type_from_ofpact_type(a->type); | |
3215 | if (a->type == OFPACT_METER) { | |
3216 | return ofpact_get_METER(a)->meter_id; | |
3217 | } else if (inst > OVSINST_OFPIT13_METER) { | |
3218 | break; | |
3219 | } | |
3220 | } | |
3221 | ||
3222 | return 0; | |
3223 | } | |
f25d0cf3 BP |
3224 | \f |
3225 | /* Formatting ofpacts. */ | |
3226 | ||
3227 | static void | |
3228 | print_note(const struct ofpact_note *note, struct ds *string) | |
3229 | { | |
3230 | size_t i; | |
3231 | ||
3232 | ds_put_cstr(string, "note:"); | |
3233 | for (i = 0; i < note->length; i++) { | |
3234 | if (i) { | |
3235 | ds_put_char(string, '.'); | |
3236 | } | |
3237 | ds_put_format(string, "%02"PRIx8, note->data[i]); | |
3238 | } | |
3239 | } | |
3240 | ||
c2d967a5 MM |
3241 | static void |
3242 | print_dec_ttl(const struct ofpact_cnt_ids *ids, | |
3243 | struct ds *s) | |
3244 | { | |
3245 | size_t i; | |
3246 | ||
3247 | ds_put_cstr(s, "dec_ttl"); | |
3248 | if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) { | |
3249 | ds_put_cstr(s, "("); | |
3250 | for (i = 0; i < ids->n_controllers; i++) { | |
3251 | if (i) { | |
3252 | ds_put_cstr(s, ","); | |
3253 | } | |
3254 | ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]); | |
3255 | } | |
3256 | ds_put_cstr(s, ")"); | |
3257 | } | |
3258 | } | |
3259 | ||
f25d0cf3 BP |
3260 | static void |
3261 | print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout, | |
3262 | struct ds *s) | |
3263 | { | |
3264 | ds_put_cstr(s, "fin_timeout("); | |
3265 | if (fin_timeout->fin_idle_timeout) { | |
3266 | ds_put_format(s, "idle_timeout=%"PRIu16",", | |
3267 | fin_timeout->fin_idle_timeout); | |
3268 | } | |
3269 | if (fin_timeout->fin_hard_timeout) { | |
3270 | ds_put_format(s, "hard_timeout=%"PRIu16",", | |
3271 | fin_timeout->fin_hard_timeout); | |
3272 | } | |
3273 | ds_chomp(s, ','); | |
3274 | ds_put_char(s, ')'); | |
3275 | } | |
3276 | ||
3277 | static void | |
3278 | ofpact_format(const struct ofpact *a, struct ds *s) | |
3279 | { | |
3280 | const struct ofpact_enqueue *enqueue; | |
3281 | const struct ofpact_resubmit *resubmit; | |
f25d0cf3 | 3282 | const struct ofpact_controller *controller; |
4cceacb9 | 3283 | const struct ofpact_metadata *metadata; |
f25d0cf3 | 3284 | const struct ofpact_tunnel *tunnel; |
29089a54 | 3285 | const struct ofpact_sample *sample; |
b2dd70be JR |
3286 | const struct ofpact_set_field *set_field; |
3287 | const struct mf_field *mf; | |
4e022ec0 | 3288 | ofp_port_t port; |
f25d0cf3 BP |
3289 | |
3290 | switch (a->type) { | |
3291 | case OFPACT_OUTPUT: | |
3292 | port = ofpact_get_OUTPUT(a)->port; | |
4e022ec0 | 3293 | if (ofp_to_u16(port) < ofp_to_u16(OFPP_MAX)) { |
f25d0cf3 BP |
3294 | ds_put_format(s, "output:%"PRIu16, port); |
3295 | } else { | |
3296 | ofputil_format_port(port, s); | |
3297 | if (port == OFPP_CONTROLLER) { | |
3298 | ds_put_format(s, ":%"PRIu16, ofpact_get_OUTPUT(a)->max_len); | |
3299 | } | |
3300 | } | |
3301 | break; | |
3302 | ||
3303 | case OFPACT_CONTROLLER: | |
3304 | controller = ofpact_get_CONTROLLER(a); | |
3305 | if (controller->reason == OFPR_ACTION && | |
3306 | controller->controller_id == 0) { | |
3307 | ds_put_format(s, "CONTROLLER:%"PRIu16, | |
3308 | ofpact_get_CONTROLLER(a)->max_len); | |
3309 | } else { | |
3310 | enum ofp_packet_in_reason reason = controller->reason; | |
3311 | ||
3312 | ds_put_cstr(s, "controller("); | |
3313 | if (reason != OFPR_ACTION) { | |
5014a89d BP |
3314 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; |
3315 | ||
f25d0cf3 | 3316 | ds_put_format(s, "reason=%s,", |
5014a89d BP |
3317 | ofputil_packet_in_reason_to_string( |
3318 | reason, reasonbuf, sizeof reasonbuf)); | |
f25d0cf3 BP |
3319 | } |
3320 | if (controller->max_len != UINT16_MAX) { | |
3321 | ds_put_format(s, "max_len=%"PRIu16",", controller->max_len); | |
3322 | } | |
3323 | if (controller->controller_id != 0) { | |
3324 | ds_put_format(s, "id=%"PRIu16",", controller->controller_id); | |
3325 | } | |
3326 | ds_chomp(s, ','); | |
3327 | ds_put_char(s, ')'); | |
3328 | } | |
3329 | break; | |
3330 | ||
3331 | case OFPACT_ENQUEUE: | |
3332 | enqueue = ofpact_get_ENQUEUE(a); | |
3333 | ds_put_format(s, "enqueue:"); | |
3334 | ofputil_format_port(enqueue->port, s); | |
b55f2f79 | 3335 | ds_put_format(s, ":%"PRIu32, enqueue->queue); |
f25d0cf3 BP |
3336 | break; |
3337 | ||
3338 | case OFPACT_OUTPUT_REG: | |
3339 | ds_put_cstr(s, "output:"); | |
3340 | mf_format_subfield(&ofpact_get_OUTPUT_REG(a)->src, s); | |
3341 | break; | |
3342 | ||
3343 | case OFPACT_BUNDLE: | |
3344 | bundle_format(ofpact_get_BUNDLE(a), s); | |
3345 | break; | |
3346 | ||
3347 | case OFPACT_SET_VLAN_VID: | |
ca287d20 JR |
3348 | ds_put_format(s, "%s:%"PRIu16, |
3349 | (a->compat == OFPUTIL_OFPAT11_SET_VLAN_VID | |
3350 | ? "set_vlan_vid" | |
3351 | : "mod_vlan_vid"), | |
f25d0cf3 BP |
3352 | ofpact_get_SET_VLAN_VID(a)->vlan_vid); |
3353 | break; | |
3354 | ||
3355 | case OFPACT_SET_VLAN_PCP: | |
ca287d20 JR |
3356 | ds_put_format(s, "%s:%"PRIu8, |
3357 | (a->compat == OFPUTIL_OFPAT11_SET_VLAN_PCP | |
3358 | ? "set_vlan_pcp" | |
3359 | : "mod_vlan_pcp"), | |
f25d0cf3 BP |
3360 | ofpact_get_SET_VLAN_PCP(a)->vlan_pcp); |
3361 | break; | |
3362 | ||
3363 | case OFPACT_STRIP_VLAN: | |
64fcc073 JR |
3364 | ds_put_cstr(s, a->compat == OFPUTIL_OFPAT11_POP_VLAN |
3365 | ? "pop_vlan" : "strip_vlan"); | |
f25d0cf3 BP |
3366 | break; |
3367 | ||
3e34fbdd | 3368 | case OFPACT_PUSH_VLAN: |
5dca28b5 | 3369 | /* XXX 802.1AD case*/ |
3e34fbdd IY |
3370 | ds_put_format(s, "push_vlan:%#"PRIx16, ETH_TYPE_VLAN_8021Q); |
3371 | break; | |
3372 | ||
f25d0cf3 BP |
3373 | case OFPACT_SET_ETH_SRC: |
3374 | ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT, | |
3375 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_SRC(a)->mac)); | |
3376 | break; | |
3377 | ||
3378 | case OFPACT_SET_ETH_DST: | |
3379 | ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT, | |
3380 | ETH_ADDR_ARGS(ofpact_get_SET_ETH_DST(a)->mac)); | |
3381 | break; | |
3382 | ||
3383 | case OFPACT_SET_IPV4_SRC: | |
3384 | ds_put_format(s, "mod_nw_src:"IP_FMT, | |
ed36537e | 3385 | IP_ARGS(ofpact_get_SET_IPV4_SRC(a)->ipv4)); |
f25d0cf3 BP |
3386 | break; |
3387 | ||
3388 | case OFPACT_SET_IPV4_DST: | |
3389 | ds_put_format(s, "mod_nw_dst:"IP_FMT, | |
ed36537e | 3390 | IP_ARGS(ofpact_get_SET_IPV4_DST(a)->ipv4)); |
f25d0cf3 BP |
3391 | break; |
3392 | ||
04f01c24 BP |
3393 | case OFPACT_SET_IP_DSCP: |
3394 | ds_put_format(s, "mod_nw_tos:%d", ofpact_get_SET_IP_DSCP(a)->dscp); | |
f25d0cf3 BP |
3395 | break; |
3396 | ||
ff14eb7a JR |
3397 | case OFPACT_SET_IP_ECN: |
3398 | ds_put_format(s, "mod_nw_ecn:%d", ofpact_get_SET_IP_ECN(a)->ecn); | |
3399 | break; | |
3400 | ||
0c20dbe4 JR |
3401 | case OFPACT_SET_IP_TTL: |
3402 | ds_put_format(s, "mod_nw_ttl:%d", ofpact_get_SET_IP_TTL(a)->ttl); | |
3403 | break; | |
3404 | ||
f25d0cf3 BP |
3405 | case OFPACT_SET_L4_SRC_PORT: |
3406 | ds_put_format(s, "mod_tp_src:%d", ofpact_get_SET_L4_SRC_PORT(a)->port); | |
3407 | break; | |
3408 | ||
3409 | case OFPACT_SET_L4_DST_PORT: | |
3410 | ds_put_format(s, "mod_tp_dst:%d", ofpact_get_SET_L4_DST_PORT(a)->port); | |
3411 | break; | |
3412 | ||
3413 | case OFPACT_REG_MOVE: | |
3414 | nxm_format_reg_move(ofpact_get_REG_MOVE(a), s); | |
3415 | break; | |
3416 | ||
3417 | case OFPACT_REG_LOAD: | |
3418 | nxm_format_reg_load(ofpact_get_REG_LOAD(a), s); | |
3419 | break; | |
3420 | ||
b2dd70be JR |
3421 | case OFPACT_SET_FIELD: |
3422 | set_field = ofpact_get_SET_FIELD(a); | |
3423 | mf = set_field->field; | |
3424 | ds_put_format(s, "set_field:"); | |
3425 | mf_format(mf, &set_field->value, NULL, s); | |
3426 | ds_put_format(s, "->%s", mf->name); | |
3427 | break; | |
3428 | ||
bd85dac1 AZ |
3429 | case OFPACT_STACK_PUSH: |
3430 | nxm_format_stack_push(ofpact_get_STACK_PUSH(a), s); | |
3431 | break; | |
3432 | ||
3433 | case OFPACT_STACK_POP: | |
3434 | nxm_format_stack_pop(ofpact_get_STACK_POP(a), s); | |
3435 | break; | |
3436 | ||
f25d0cf3 | 3437 | case OFPACT_DEC_TTL: |
c2d967a5 | 3438 | print_dec_ttl(ofpact_get_DEC_TTL(a), s); |
f25d0cf3 BP |
3439 | break; |
3440 | ||
097d4939 JR |
3441 | case OFPACT_SET_MPLS_LABEL: |
3442 | ds_put_format(s, "set_mpls_label(%"PRIu32")", | |
3443 | ntohl(ofpact_get_SET_MPLS_LABEL(a)->label)); | |
3444 | break; | |
3445 | ||
3446 | case OFPACT_SET_MPLS_TC: | |
3447 | ds_put_format(s, "set_mpls_ttl(%"PRIu8")", | |
3448 | ofpact_get_SET_MPLS_TC(a)->tc); | |
3449 | break; | |
3450 | ||
0f3f3c3d SH |
3451 | case OFPACT_SET_MPLS_TTL: |
3452 | ds_put_format(s, "set_mpls_ttl(%"PRIu8")", | |
3453 | ofpact_get_SET_MPLS_TTL(a)->ttl); | |
3454 | break; | |
3455 | ||
b676167a SH |
3456 | case OFPACT_DEC_MPLS_TTL: |
3457 | ds_put_cstr(s, "dec_mpls_ttl"); | |
3458 | break; | |
3459 | ||
f25d0cf3 BP |
3460 | case OFPACT_SET_TUNNEL: |
3461 | tunnel = ofpact_get_SET_TUNNEL(a); | |
3462 | ds_put_format(s, "set_tunnel%s:%#"PRIx64, | |
3463 | (tunnel->tun_id > UINT32_MAX | |
3464 | || a->compat == OFPUTIL_NXAST_SET_TUNNEL64 ? "64" : ""), | |
3465 | tunnel->tun_id); | |
3466 | break; | |
3467 | ||
3468 | case OFPACT_SET_QUEUE: | |
3469 | ds_put_format(s, "set_queue:%"PRIu32, | |
3470 | ofpact_get_SET_QUEUE(a)->queue_id); | |
3471 | break; | |
3472 | ||
3473 | case OFPACT_POP_QUEUE: | |
3474 | ds_put_cstr(s, "pop_queue"); | |
3475 | break; | |
3476 | ||
3477 | case OFPACT_FIN_TIMEOUT: | |
3478 | print_fin_timeout(ofpact_get_FIN_TIMEOUT(a), s); | |
3479 | break; | |
3480 | ||
3481 | case OFPACT_RESUBMIT: | |
3482 | resubmit = ofpact_get_RESUBMIT(a); | |
3483 | if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) { | |
c6100d92 BP |
3484 | ds_put_cstr(s, "resubmit:"); |
3485 | ofputil_format_port(resubmit->in_port, s); | |
f25d0cf3 BP |
3486 | } else { |
3487 | ds_put_format(s, "resubmit("); | |
3488 | if (resubmit->in_port != OFPP_IN_PORT) { | |
3489 | ofputil_format_port(resubmit->in_port, s); | |
3490 | } | |
3491 | ds_put_char(s, ','); | |
3492 | if (resubmit->table_id != 255) { | |
3493 | ds_put_format(s, "%"PRIu8, resubmit->table_id); | |
3494 | } | |
3495 | ds_put_char(s, ')'); | |
3496 | } | |
3497 | break; | |
3498 | ||
3499 | case OFPACT_LEARN: | |
3500 | learn_format(ofpact_get_LEARN(a), s); | |
3501 | break; | |
3502 | ||
3503 | case OFPACT_MULTIPATH: | |
3504 | multipath_format(ofpact_get_MULTIPATH(a), s); | |
3505 | break; | |
3506 | ||
f25d0cf3 BP |
3507 | case OFPACT_NOTE: |
3508 | print_note(ofpact_get_NOTE(a), s); | |
3509 | break; | |
3510 | ||
b02475c5 SH |
3511 | case OFPACT_PUSH_MPLS: |
3512 | ds_put_format(s, "push_mpls:0x%04"PRIx16, | |
3513 | ntohs(ofpact_get_PUSH_MPLS(a)->ethertype)); | |
3514 | break; | |
3515 | ||
3516 | case OFPACT_POP_MPLS: | |
3517 | ds_put_format(s, "pop_mpls:0x%04"PRIx16, | |
3518 | ntohs(ofpact_get_POP_MPLS(a)->ethertype)); | |
3519 | break; | |
3520 | ||
f25d0cf3 BP |
3521 | case OFPACT_EXIT: |
3522 | ds_put_cstr(s, "exit"); | |
3523 | break; | |
8dd54666 | 3524 | |
29089a54 RL |
3525 | case OFPACT_SAMPLE: |
3526 | sample = ofpact_get_SAMPLE(a); | |
3527 | ds_put_format( | |
3528 | s, "sample(probability=%"PRIu16",collector_set_id=%"PRIu32 | |
3529 | ",obs_domain_id=%"PRIu32",obs_point_id=%"PRIu32")", | |
3530 | sample->probability, sample->collector_set_id, | |
3531 | sample->obs_domain_id, sample->obs_point_id); | |
3532 | break; | |
3533 | ||
7fdb60a7 SH |
3534 | case OFPACT_WRITE_ACTIONS: { |
3535 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
3536 | ds_put_format(s, "%s(", | |
3537 | ovs_instruction_name_from_type( | |
3538 | OVSINST_OFPIT11_WRITE_ACTIONS)); | |
3539 | ofpacts_format(on->actions, ofpact_nest_get_action_len(on), s); | |
3540 | ds_put_char(s, ')'); | |
3541 | break; | |
3542 | } | |
3543 | ||
b19e8793 IY |
3544 | case OFPACT_CLEAR_ACTIONS: |
3545 | ds_put_format(s, "%s", | |
ba0bc9b0 | 3546 | ovs_instruction_name_from_type( |
b19e8793 IY |
3547 | OVSINST_OFPIT11_CLEAR_ACTIONS)); |
3548 | break; | |
3549 | ||
4cceacb9 JS |
3550 | case OFPACT_WRITE_METADATA: |
3551 | metadata = ofpact_get_WRITE_METADATA(a); | |
3552 | ds_put_format(s, "%s:%#"PRIx64, | |
ba0bc9b0 | 3553 | ovs_instruction_name_from_type( |
4cceacb9 JS |
3554 | OVSINST_OFPIT11_WRITE_METADATA), |
3555 | ntohll(metadata->metadata)); | |
b8266395 | 3556 | if (metadata->mask != OVS_BE64_MAX) { |
4cceacb9 JS |
3557 | ds_put_format(s, "/%#"PRIx64, ntohll(metadata->mask)); |
3558 | } | |
3559 | break; | |
3560 | ||
8dd54666 IY |
3561 | case OFPACT_GOTO_TABLE: |
3562 | ds_put_format(s, "%s:%"PRIu8, | |
ba0bc9b0 | 3563 | ovs_instruction_name_from_type( |
8dd54666 IY |
3564 | OVSINST_OFPIT11_GOTO_TABLE), |
3565 | ofpact_get_GOTO_TABLE(a)->table_id); | |
3566 | break; | |
638a19b0 JR |
3567 | |
3568 | case OFPACT_METER: | |
3569 | ds_put_format(s, "%s:%"PRIu32, | |
ba0bc9b0 | 3570 | ovs_instruction_name_from_type(OVSINST_OFPIT13_METER), |
638a19b0 JR |
3571 | ofpact_get_METER(a)->meter_id); |
3572 | break; | |
7395c052 NZ |
3573 | |
3574 | case OFPACT_GROUP: | |
3575 | ds_put_format(s, "group:%"PRIu32, | |
3576 | ofpact_get_GROUP(a)->group_id); | |
3577 | break; | |
f25d0cf3 BP |
3578 | } |
3579 | } | |
3580 | ||
3581 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
3582 | * 'ofpacts' to 'string'. */ | |
3583 | void | |
3584 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
3585 | struct ds *string) | |
3586 | { | |
f25d0cf3 BP |
3587 | if (!ofpacts_len) { |
3588 | ds_put_cstr(string, "drop"); | |
3589 | } else { | |
3590 | const struct ofpact *a; | |
3591 | ||
3592 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
3593 | if (a != ofpacts) { | |
3594 | ds_put_cstr(string, ","); | |
3595 | } | |
8dd54666 | 3596 | |
5dca28b5 | 3597 | /* XXX write-actions */ |
f25d0cf3 BP |
3598 | ofpact_format(a, string); |
3599 | } | |
3600 | } | |
3601 | } | |
3602 | \f | |
3603 | /* Internal use by helpers. */ | |
3604 | ||
3605 | void * | |
3606 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
3607 | { | |
3608 | struct ofpact *ofpact; | |
3609 | ||
3610 | ofpact_pad(ofpacts); | |
3611 | ofpact = ofpacts->l2 = ofpbuf_put_uninit(ofpacts, len); | |
3612 | ofpact_init(ofpact, type, len); | |
3613 | return ofpact; | |
3614 | } | |
3615 | ||
3616 | void | |
3617 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
3618 | { | |
3619 | memset(ofpact, 0, len); | |
3620 | ofpact->type = type; | |
3621 | ofpact->compat = OFPUTIL_ACTION_INVALID; | |
3622 | ofpact->len = len; | |
3623 | } | |
3624 | \f | |
3625 | /* Updates 'ofpact->len' to the number of bytes in the tail of 'ofpacts' | |
3626 | * starting at 'ofpact'. | |
3627 | * | |
3628 | * This is the correct way to update a variable-length ofpact's length after | |
3629 | * adding the variable-length part of the payload. (See the large comment | |
3630 | * near the end of ofp-actions.h for more information.) */ | |
3631 | void | |
3632 | ofpact_update_len(struct ofpbuf *ofpacts, struct ofpact *ofpact) | |
3633 | { | |
cb22974d | 3634 | ovs_assert(ofpact == ofpacts->l2); |
f25d0cf3 BP |
3635 | ofpact->len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
3636 | } | |
3637 | ||
3638 | /* Pads out 'ofpacts' to a multiple of OFPACT_ALIGNTO bytes in length. Each | |
3639 | * ofpact_put_<ENUM>() calls this function automatically beforehand, but the | |
3640 | * client must call this itself after adding the final ofpact to an array of | |
3641 | * them. | |
3642 | * | |
3643 | * (The consequences of failing to call this function are probably not dire. | |
3644 | * OFPACT_FOR_EACH will calculate a pointer beyond the end of the ofpacts, but | |
3645 | * not dereference it. That's undefined behavior, technically, but it will not | |
3646 | * cause a real problem on common systems. Still, it seems better to call | |
3647 | * it.) */ | |
3648 | void | |
3649 | ofpact_pad(struct ofpbuf *ofpacts) | |
3650 | { | |
f6e984d7 BP |
3651 | unsigned int pad = PAD_SIZE(ofpacts->size, OFPACT_ALIGNTO); |
3652 | if (pad) { | |
3653 | ofpbuf_put_zeros(ofpacts, pad); | |
f25d0cf3 BP |
3654 | } |
3655 | } |