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f25d0cf3 | 1 | /* |
77ab5fd2 | 2 | * Copyright (c) 2008-2016 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> | |
d787ad39 JS |
18 | #include <netinet/in.h> |
19 | ||
f25d0cf3 BP |
20 | #include "bundle.h" |
21 | #include "byte-order.h" | |
b1c5bf1f | 22 | #include "colors.h" |
f25d0cf3 | 23 | #include "compiler.h" |
d4abaff5 | 24 | #include "dummy.h" |
c2d936a4 | 25 | #include "hmap.h" |
f25d0cf3 | 26 | #include "learn.h" |
f25d0cf3 BP |
27 | #include "multipath.h" |
28 | #include "nx-match.h" | |
9ac0aada | 29 | #include "odp-netlink.h" |
bdcad671 | 30 | #include "ofp-prop.h" |
b598f214 BW |
31 | #include "openvswitch/dynamic-string.h" |
32 | #include "openvswitch/meta-flow.h" | |
33 | #include "openvswitch/ofp-actions.h" | |
f4248336 | 34 | #include "openvswitch/ofp-util.h" |
b598f214 | 35 | #include "openvswitch/ofp-parse.h" |
64c96779 | 36 | #include "openvswitch/ofpbuf.h" |
b598f214 | 37 | #include "openvswitch/vlog.h" |
c2d936a4 | 38 | #include "unaligned.h" |
cb22974d | 39 | #include "util.h" |
f25d0cf3 BP |
40 | |
41 | VLOG_DEFINE_THIS_MODULE(ofp_actions); | |
42 | ||
43 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
f25d0cf3 | 44 | |
c2d936a4 BP |
45 | struct ofp_action_header; |
46 | ||
47 | /* Raw identifiers for OpenFlow actions. | |
48 | * | |
49 | * Decoding and encoding OpenFlow actions across multiple versions is difficult | |
50 | * to do in a clean, consistent way. This enumeration lays out all of the | |
51 | * forms of actions that Open vSwitch supports. | |
52 | * | |
53 | * The comments here must follow a stylized form because the | |
54 | * "extract-ofp-actions" program parses them at build time to generate data | |
55 | * tables. | |
56 | * | |
57 | * - The first part of each comment specifies the vendor, OpenFlow versions, | |
58 | * and type for each protocol that supports the action: | |
59 | * | |
60 | * # The vendor is OF for standard OpenFlow actions, NX for Nicira | |
61 | * extension actions. (Support for other vendors can be added, but | |
62 | * it can't be done just based on a vendor ID definition alone | |
63 | * because OpenFlow doesn't define a standard way to specify a | |
64 | * subtype for vendor actions, so other vendors might do it different | |
65 | * from Nicira.) | |
66 | * | |
67 | * # The version can specify a specific OpenFlow version, a version | |
68 | * range delimited by "-", or an open-ended range with "+". | |
69 | * | |
70 | * # The type, in parentheses, is the action type number (for standard | |
71 | * OpenFlow actions) or subtype (for vendor extension actions). | |
72 | * | |
73 | * # Optionally one may add "is deprecated" followed by a | |
74 | * human-readable reason in parentheses (which will be used in log | |
75 | * messages), if a particular action should no longer be used. | |
76 | * | |
77 | * Multiple such specifications may be separated by commas. | |
78 | * | |
79 | * - The second part describes the action's wire format. It may be: | |
80 | * | |
81 | * # "struct <name>": The struct fully specifies the wire format. The | |
82 | * action is exactly the size of the struct. (Thus, the struct must | |
83 | * be an exact multiple of 8 bytes in size.) | |
84 | * | |
85 | * # "struct <name>, ...": The struct specifies the beginning of the | |
86 | * wire format. An instance of the action is either the struct's | |
87 | * exact size, or a multiple of 8 bytes longer. | |
88 | * | |
89 | * # "uint<N>_t" or "ovs_be<N>": The action consists of a (standard or | |
90 | * vendor extension) header, followed by 0 or more pad bytes to align | |
91 | * to a multiple of <N> bits, followed by an argument of the given | |
92 | * type, followed by 0 or more pad bytes to bring the total action up | |
93 | * to a multiple of 8 bytes. | |
94 | * | |
95 | * # "void": The action is just a (standard or vendor extension) | |
96 | * header. | |
97 | * | |
98 | * - Optional additional text enclosed in square brackets is commentary for | |
99 | * the human reader. | |
100 | */ | |
101 | enum ofp_raw_action_type { | |
102 | /* ## ----------------- ## */ | |
103 | /* ## Standard actions. ## */ | |
104 | /* ## ----------------- ## */ | |
105 | ||
106 | /* OF1.0(0): struct ofp10_action_output. */ | |
107 | OFPAT_RAW10_OUTPUT, | |
108 | /* OF1.1+(0): struct ofp11_action_output. */ | |
109 | OFPAT_RAW11_OUTPUT, | |
110 | ||
111 | /* OF1.0(1): uint16_t. */ | |
112 | OFPAT_RAW10_SET_VLAN_VID, | |
113 | /* OF1.0(2): uint8_t. */ | |
114 | OFPAT_RAW10_SET_VLAN_PCP, | |
115 | ||
116 | /* OF1.1(1), OF1.2+(1) is deprecated (use Set-Field): uint16_t. | |
117 | * | |
118 | * [Semantics differ slightly between the 1.0 and 1.1 versions of the VLAN | |
119 | * modification actions: the 1.0 versions push a VLAN header if none is | |
120 | * present, but the 1.1 versions do not. That is the only reason that we | |
121 | * distinguish their raw action types.] */ | |
122 | OFPAT_RAW11_SET_VLAN_VID, | |
123 | /* OF1.1(2), OF1.2+(2) is deprecated (use Set-Field): uint8_t. */ | |
124 | OFPAT_RAW11_SET_VLAN_PCP, | |
125 | ||
126 | /* OF1.1+(17): ovs_be16. | |
127 | * | |
128 | * [The argument is the Ethertype, e.g. ETH_TYPE_VLAN_8021Q, not the VID or | |
129 | * TCI.] */ | |
130 | OFPAT_RAW11_PUSH_VLAN, | |
131 | ||
132 | /* OF1.0(3): void. */ | |
133 | OFPAT_RAW10_STRIP_VLAN, | |
134 | /* OF1.1+(18): void. */ | |
135 | OFPAT_RAW11_POP_VLAN, | |
136 | ||
137 | /* OF1.0(4), OF1.1(3), OF1.2+(3) is deprecated (use Set-Field): struct | |
138 | * ofp_action_dl_addr. */ | |
139 | OFPAT_RAW_SET_DL_SRC, | |
140 | ||
141 | /* OF1.0(5), OF1.1(4), OF1.2+(4) is deprecated (use Set-Field): struct | |
142 | * ofp_action_dl_addr. */ | |
143 | OFPAT_RAW_SET_DL_DST, | |
144 | ||
145 | /* OF1.0(6), OF1.1(5), OF1.2+(5) is deprecated (use Set-Field): | |
146 | * ovs_be32. */ | |
147 | OFPAT_RAW_SET_NW_SRC, | |
148 | ||
149 | /* OF1.0(7), OF1.1(6), OF1.2+(6) is deprecated (use Set-Field): | |
150 | * ovs_be32. */ | |
151 | OFPAT_RAW_SET_NW_DST, | |
152 | ||
153 | /* OF1.0(8), OF1.1(7), OF1.2+(7) is deprecated (use Set-Field): uint8_t. */ | |
154 | OFPAT_RAW_SET_NW_TOS, | |
155 | ||
156 | /* OF1.1(8), OF1.2+(8) is deprecated (use Set-Field): uint8_t. */ | |
157 | OFPAT_RAW11_SET_NW_ECN, | |
158 | ||
159 | /* OF1.0(9), OF1.1(9), OF1.2+(9) is deprecated (use Set-Field): | |
160 | * ovs_be16. */ | |
161 | OFPAT_RAW_SET_TP_SRC, | |
162 | ||
163 | /* OF1.0(10), OF1.1(10), OF1.2+(10) is deprecated (use Set-Field): | |
164 | * ovs_be16. */ | |
165 | OFPAT_RAW_SET_TP_DST, | |
166 | ||
167 | /* OF1.0(11): struct ofp10_action_enqueue. */ | |
168 | OFPAT_RAW10_ENQUEUE, | |
169 | ||
170 | /* NX1.0(30), OF1.1(13), OF1.2+(13) is deprecated (use Set-Field): | |
171 | * ovs_be32. */ | |
172 | OFPAT_RAW_SET_MPLS_LABEL, | |
173 | ||
174 | /* NX1.0(31), OF1.1(14), OF1.2+(14) is deprecated (use Set-Field): | |
175 | * uint8_t. */ | |
176 | OFPAT_RAW_SET_MPLS_TC, | |
177 | ||
178 | /* NX1.0(25), OF1.1(15), OF1.2+(15) is deprecated (use Set-Field): | |
179 | * uint8_t. */ | |
180 | OFPAT_RAW_SET_MPLS_TTL, | |
181 | ||
182 | /* NX1.0(26), OF1.1+(16): void. */ | |
183 | OFPAT_RAW_DEC_MPLS_TTL, | |
184 | ||
185 | /* NX1.0(23), OF1.1+(19): ovs_be16. | |
186 | * | |
187 | * [The argument is the Ethertype, e.g. ETH_TYPE_MPLS, not the label.] */ | |
188 | OFPAT_RAW_PUSH_MPLS, | |
189 | ||
190 | /* NX1.0(24), OF1.1+(20): ovs_be16. | |
191 | * | |
192 | * [The argument is the Ethertype, e.g. ETH_TYPE_IPV4 if at BoS or | |
193 | * ETH_TYPE_MPLS otherwise, not the label.] */ | |
194 | OFPAT_RAW_POP_MPLS, | |
195 | ||
196 | /* NX1.0(4), OF1.1+(21): uint32_t. */ | |
197 | OFPAT_RAW_SET_QUEUE, | |
198 | ||
199 | /* OF1.1+(22): uint32_t. */ | |
200 | OFPAT_RAW11_GROUP, | |
201 | ||
202 | /* OF1.1+(23): uint8_t. */ | |
203 | OFPAT_RAW11_SET_NW_TTL, | |
204 | ||
205 | /* NX1.0(18), OF1.1+(24): void. */ | |
206 | OFPAT_RAW_DEC_NW_TTL, | |
207 | /* NX1.0+(21): struct nx_action_cnt_ids, ... */ | |
208 | NXAST_RAW_DEC_TTL_CNT_IDS, | |
209 | ||
7eb4b1f1 | 210 | /* OF1.2-1.4(25): struct ofp12_action_set_field, ... */ |
c2d936a4 | 211 | OFPAT_RAW12_SET_FIELD, |
7eb4b1f1 BP |
212 | /* OF1.5+(25): struct ofp12_action_set_field, ... */ |
213 | OFPAT_RAW15_SET_FIELD, | |
214 | /* NX1.0-1.4(7): struct nx_action_reg_load. | |
215 | * | |
216 | * [In OpenFlow 1.5, set_field is a superset of reg_load functionality, so | |
217 | * we drop reg_load.] */ | |
c2d936a4 | 218 | NXAST_RAW_REG_LOAD, |
bad8a439 BP |
219 | /* NX1.0-1.4(33): struct nx_action_reg_load2, ... |
220 | * | |
221 | * [In OpenFlow 1.5, set_field is a superset of reg_load2 functionality, so | |
222 | * we drop reg_load2.] */ | |
223 | NXAST_RAW_REG_LOAD2, | |
c2d936a4 | 224 | |
f13cdd73 | 225 | /* OF1.5+(28): struct ofp15_action_copy_field, ... */ |
73178f20 | 226 | OFPAT_RAW15_COPY_FIELD, |
914624f8 BP |
227 | /* ONF1.3-1.4(3200): struct onf_action_copy_field, ... */ |
228 | ONFACT_RAW13_COPY_FIELD, | |
bad8a439 | 229 | /* NX1.0-1.4(6): struct nx_action_reg_move, ... */ |
73178f20 BP |
230 | NXAST_RAW_REG_MOVE, |
231 | ||
c2d936a4 BP |
232 | /* ## ------------------------- ## */ |
233 | /* ## Nicira extension actions. ## */ | |
234 | /* ## ------------------------- ## */ | |
235 | ||
236 | /* Actions similar to standard actions are listed with the standard actions. */ | |
237 | ||
238 | /* NX1.0+(1): uint16_t. */ | |
239 | NXAST_RAW_RESUBMIT, | |
240 | /* NX1.0+(14): struct nx_action_resubmit. */ | |
241 | NXAST_RAW_RESUBMIT_TABLE, | |
242 | ||
243 | /* NX1.0+(2): uint32_t. */ | |
244 | NXAST_RAW_SET_TUNNEL, | |
245 | /* NX1.0+(9): uint64_t. */ | |
246 | NXAST_RAW_SET_TUNNEL64, | |
247 | ||
248 | /* NX1.0+(5): void. */ | |
249 | NXAST_RAW_POP_QUEUE, | |
250 | ||
c2d936a4 BP |
251 | /* NX1.0+(8): struct nx_action_note, ... */ |
252 | NXAST_RAW_NOTE, | |
253 | ||
254 | /* NX1.0+(10): struct nx_action_multipath. */ | |
255 | NXAST_RAW_MULTIPATH, | |
256 | ||
257 | /* NX1.0+(12): struct nx_action_bundle, ... */ | |
258 | NXAST_RAW_BUNDLE, | |
259 | /* NX1.0+(13): struct nx_action_bundle, ... */ | |
260 | NXAST_RAW_BUNDLE_LOAD, | |
261 | ||
262 | /* NX1.0+(15): struct nx_action_output_reg. */ | |
263 | NXAST_RAW_OUTPUT_REG, | |
bad8a439 BP |
264 | /* NX1.0+(32): struct nx_action_output_reg2. */ |
265 | NXAST_RAW_OUTPUT_REG2, | |
c2d936a4 BP |
266 | |
267 | /* NX1.0+(16): struct nx_action_learn, ... */ | |
268 | NXAST_RAW_LEARN, | |
269 | ||
270 | /* NX1.0+(17): void. */ | |
271 | NXAST_RAW_EXIT, | |
272 | ||
273 | /* NX1.0+(19): struct nx_action_fin_timeout. */ | |
274 | NXAST_RAW_FIN_TIMEOUT, | |
275 | ||
276 | /* NX1.0+(20): struct nx_action_controller. */ | |
277 | NXAST_RAW_CONTROLLER, | |
bdcad671 BP |
278 | /* NX1.0+(37): struct nx_action_controller2, ... */ |
279 | NXAST_RAW_CONTROLLER2, | |
c2d936a4 BP |
280 | |
281 | /* NX1.0+(22): struct nx_action_write_metadata. */ | |
282 | NXAST_RAW_WRITE_METADATA, | |
283 | ||
284 | /* NX1.0+(27): struct nx_action_stack. */ | |
285 | NXAST_RAW_STACK_PUSH, | |
286 | ||
287 | /* NX1.0+(28): struct nx_action_stack. */ | |
288 | NXAST_RAW_STACK_POP, | |
289 | ||
290 | /* NX1.0+(29): struct nx_action_sample. */ | |
291 | NXAST_RAW_SAMPLE, | |
18080541 BP |
292 | |
293 | /* NX1.0+(34): struct nx_action_conjunction. */ | |
294 | NXAST_RAW_CONJUNCTION, | |
d4abaff5 | 295 | |
07659514 JS |
296 | /* NX1.0+(35): struct nx_action_conntrack, ... */ |
297 | NXAST_RAW_CT, | |
298 | ||
9ac0aada JR |
299 | /* NX1.0+(36): struct nx_action_nat, ... */ |
300 | NXAST_RAW_NAT, | |
301 | ||
d4abaff5 BP |
302 | /* ## ------------------ ## */ |
303 | /* ## Debugging actions. ## */ | |
304 | /* ## ------------------ ## */ | |
305 | ||
306 | /* These are intentionally undocumented, subject to change, and ovs-vswitchd */ | |
307 | /* accepts them only if started with --enable-dummy. */ | |
308 | ||
309 | /* NX1.0+(255): void. */ | |
310 | NXAST_RAW_DEBUG_RECIRC, | |
c2d936a4 BP |
311 | }; |
312 | ||
313 | /* OpenFlow actions are always a multiple of 8 bytes in length. */ | |
314 | #define OFP_ACTION_ALIGN 8 | |
315 | ||
316 | /* Define a few functions for working with instructions. */ | |
317 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
318 | static inline const struct STRUCT * OVS_UNUSED \ | |
319 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
320 | { \ | |
321 | ovs_assert(inst->type == htons(ENUM)); \ | |
322 | return ALIGNED_CAST(struct STRUCT *, inst); \ | |
323 | } \ | |
324 | \ | |
325 | static inline void OVS_UNUSED \ | |
326 | instruction_init_##ENUM(struct STRUCT *s) \ | |
327 | { \ | |
328 | memset(s, 0, sizeof *s); \ | |
329 | s->type = htons(ENUM); \ | |
330 | s->len = htons(sizeof *s); \ | |
331 | } \ | |
332 | \ | |
333 | static inline struct STRUCT * OVS_UNUSED \ | |
334 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
335 | { \ | |
336 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
337 | instruction_init_##ENUM(s); \ | |
338 | return s; \ | |
339 | } | |
340 | OVS_INSTRUCTIONS | |
341 | #undef DEFINE_INST | |
342 | ||
343 | static void ofpacts_update_instruction_actions(struct ofpbuf *openflow, | |
344 | size_t ofs); | |
178742f9 | 345 | static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs); |
c2d936a4 BP |
346 | |
347 | static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len, | |
d824b5b7 JS |
348 | uint32_t allowed_ovsinsts, |
349 | enum ofpact_type outer_action); | |
c2d936a4 BP |
350 | |
351 | static void ofpact_put_set_field(struct ofpbuf *openflow, enum ofp_version, | |
352 | enum mf_field_id, uint64_t value); | |
353 | ||
354 | static enum ofperr ofpact_pull_raw(struct ofpbuf *, enum ofp_version, | |
355 | enum ofp_raw_action_type *, uint64_t *arg); | |
356 | static void *ofpact_put_raw(struct ofpbuf *, enum ofp_version, | |
357 | enum ofp_raw_action_type, uint64_t arg); | |
358 | ||
cab50449 | 359 | static char *OVS_WARN_UNUSED_RESULT ofpacts_parse( |
c2d936a4 | 360 | char *str, struct ofpbuf *ofpacts, enum ofputil_protocol *usable_protocols, |
d824b5b7 | 361 | bool allow_instructions, enum ofpact_type outer_action); |
07659514 JS |
362 | static enum ofperr ofpacts_pull_openflow_actions__( |
363 | struct ofpbuf *openflow, unsigned int actions_len, | |
364 | enum ofp_version version, uint32_t allowed_ovsinsts, | |
365 | struct ofpbuf *ofpacts, enum ofpact_type outer_action); | |
8e53fe8c JS |
366 | static char * OVS_WARN_UNUSED_RESULT ofpacts_parse_copy( |
367 | const char *s_, struct ofpbuf *ofpacts, | |
368 | enum ofputil_protocol *usable_protocols, | |
369 | bool allow_instructions, enum ofpact_type outer_action); | |
d824b5b7 | 370 | |
4f20179d BP |
371 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
372 | * nested ofpacts it returns the first one. */ | |
373 | struct ofpact * | |
374 | ofpact_next_flattened(const struct ofpact *ofpact) | |
375 | { | |
376 | switch (ofpact->type) { | |
377 | case OFPACT_OUTPUT: | |
378 | case OFPACT_GROUP: | |
379 | case OFPACT_CONTROLLER: | |
380 | case OFPACT_ENQUEUE: | |
381 | case OFPACT_OUTPUT_REG: | |
382 | case OFPACT_BUNDLE: | |
383 | case OFPACT_SET_FIELD: | |
384 | case OFPACT_SET_VLAN_VID: | |
385 | case OFPACT_SET_VLAN_PCP: | |
386 | case OFPACT_STRIP_VLAN: | |
387 | case OFPACT_PUSH_VLAN: | |
388 | case OFPACT_SET_ETH_SRC: | |
389 | case OFPACT_SET_ETH_DST: | |
390 | case OFPACT_SET_IPV4_SRC: | |
391 | case OFPACT_SET_IPV4_DST: | |
392 | case OFPACT_SET_IP_DSCP: | |
393 | case OFPACT_SET_IP_ECN: | |
394 | case OFPACT_SET_IP_TTL: | |
395 | case OFPACT_SET_L4_SRC_PORT: | |
396 | case OFPACT_SET_L4_DST_PORT: | |
397 | case OFPACT_REG_MOVE: | |
398 | case OFPACT_STACK_PUSH: | |
399 | case OFPACT_STACK_POP: | |
400 | case OFPACT_DEC_TTL: | |
401 | case OFPACT_SET_MPLS_LABEL: | |
402 | case OFPACT_SET_MPLS_TC: | |
403 | case OFPACT_SET_MPLS_TTL: | |
404 | case OFPACT_DEC_MPLS_TTL: | |
405 | case OFPACT_PUSH_MPLS: | |
406 | case OFPACT_POP_MPLS: | |
407 | case OFPACT_SET_TUNNEL: | |
408 | case OFPACT_SET_QUEUE: | |
409 | case OFPACT_POP_QUEUE: | |
410 | case OFPACT_FIN_TIMEOUT: | |
411 | case OFPACT_RESUBMIT: | |
412 | case OFPACT_LEARN: | |
413 | case OFPACT_CONJUNCTION: | |
414 | case OFPACT_MULTIPATH: | |
415 | case OFPACT_NOTE: | |
416 | case OFPACT_EXIT: | |
417 | case OFPACT_SAMPLE: | |
418 | case OFPACT_UNROLL_XLATE: | |
419 | case OFPACT_DEBUG_RECIRC: | |
420 | case OFPACT_METER: | |
421 | case OFPACT_CLEAR_ACTIONS: | |
422 | case OFPACT_WRITE_METADATA: | |
423 | case OFPACT_GOTO_TABLE: | |
424 | case OFPACT_NAT: | |
425 | return ofpact_next(ofpact); | |
426 | ||
427 | case OFPACT_CT: | |
428 | return ofpact_get_CT(ofpact)->actions; | |
429 | ||
430 | case OFPACT_WRITE_ACTIONS: | |
431 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
432 | } | |
433 | ||
434 | OVS_NOT_REACHED(); | |
435 | } | |
436 | ||
d824b5b7 JS |
437 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
438 | * ofpacts_parse() oblivious of actions nesting. | |
439 | * | |
440 | * Push the actions back on after nested parsing, e.g.: | |
441 | * | |
442 | * size_t ofs = ofpacts_pull(ofpacts); | |
443 | * ...nested parsing... | |
444 | * ofpbuf_push_uninit(ofpacts, ofs); | |
445 | */ | |
446 | static size_t | |
447 | ofpacts_pull(struct ofpbuf *ofpacts) | |
448 | { | |
449 | size_t ofs; | |
450 | ||
d824b5b7 JS |
451 | ofs = ofpacts->size; |
452 | ofpbuf_pull(ofpacts, ofs); | |
453 | ||
454 | return ofs; | |
455 | } | |
c2d936a4 BP |
456 | |
457 | #include "ofp-actions.inc1" | |
458 | \f | |
459 | /* Output actions. */ | |
460 | ||
461 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
462 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
463 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
464 | * packet should be sent. */ | |
465 | struct ofp10_action_output { | |
466 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
467 | ovs_be16 len; /* Length is 8. */ | |
468 | ovs_be16 port; /* Output port. */ | |
469 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 470 | }; |
c2d936a4 BP |
471 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
472 | ||
473 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
474 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
475 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
476 | * packet should be sent.*/ | |
477 | struct ofp11_action_output { | |
478 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
479 | ovs_be16 len; /* Length is 16. */ | |
480 | ovs_be32 port; /* Output port. */ | |
481 | ovs_be16 max_len; /* Max length to send to controller. */ | |
482 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
483 | }; | |
484 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 485 | |
f25d0cf3 | 486 | static enum ofperr |
c2d936a4 | 487 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 488 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 489 | struct ofpbuf *out) |
f25d0cf3 BP |
490 | { |
491 | struct ofpact_output *output; | |
492 | ||
493 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 494 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
495 | output->max_len = ntohs(oao->max_len); |
496 | ||
57ad4e9e | 497 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
498 | } |
499 | ||
500 | static enum ofperr | |
c2d936a4 | 501 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
502 | enum ofp_version ofp_version OVS_UNUSED, |
503 | struct ofpbuf *out) | |
f25d0cf3 | 504 | { |
c2d936a4 BP |
505 | struct ofpact_output *output; |
506 | enum ofperr error; | |
f25d0cf3 | 507 | |
c2d936a4 BP |
508 | output = ofpact_put_OUTPUT(out); |
509 | output->max_len = ntohs(oao->max_len); | |
510 | ||
511 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
512 | if (error) { | |
513 | return error; | |
f25d0cf3 | 514 | } |
c2d936a4 BP |
515 | |
516 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
517 | } |
518 | ||
519 | static void | |
c2d936a4 BP |
520 | encode_OUTPUT(const struct ofpact_output *output, |
521 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 522 | { |
c2d936a4 BP |
523 | if (ofp_version == OFP10_VERSION) { |
524 | struct ofp10_action_output *oao; | |
f25d0cf3 | 525 | |
c2d936a4 BP |
526 | oao = put_OFPAT10_OUTPUT(out); |
527 | oao->port = htons(ofp_to_u16(output->port)); | |
528 | oao->max_len = htons(output->max_len); | |
529 | } else { | |
530 | struct ofp11_action_output *oao; | |
531 | ||
532 | oao = put_OFPAT11_OUTPUT(out); | |
533 | oao->port = ofputil_port_to_ofp11(output->port); | |
534 | oao->max_len = htons(output->max_len); | |
535 | } | |
f25d0cf3 BP |
536 | } |
537 | ||
cab50449 | 538 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
539 | parse_OUTPUT(const char *arg, struct ofpbuf *ofpacts, |
540 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
f25d0cf3 | 541 | { |
c2d936a4 BP |
542 | if (strchr(arg, '[')) { |
543 | struct ofpact_output_reg *output_reg; | |
f25d0cf3 | 544 | |
c2d936a4 BP |
545 | output_reg = ofpact_put_OUTPUT_REG(ofpacts); |
546 | output_reg->max_len = UINT16_MAX; | |
547 | return mf_parse_subfield(&output_reg->src, arg); | |
548 | } else { | |
549 | struct ofpact_output *output; | |
550 | ||
551 | output = ofpact_put_OUTPUT(ofpacts); | |
552 | if (!ofputil_port_from_string(arg, &output->port)) { | |
553 | return xasprintf("%s: output to unknown port", arg); | |
554 | } | |
555 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
556 | return NULL; | |
f25d0cf3 | 557 | } |
c2d936a4 | 558 | } |
f25d0cf3 | 559 | |
c2d936a4 BP |
560 | static void |
561 | format_OUTPUT(const struct ofpact_output *a, struct ds *s) | |
562 | { | |
563 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
b1c5bf1f QM |
564 | ds_put_format(s, "%soutput:%s%"PRIu16, |
565 | colors.special, colors.end, a->port); | |
c2d936a4 BP |
566 | } else { |
567 | ofputil_format_port(a->port, s); | |
568 | if (a->port == OFPP_CONTROLLER) { | |
569 | ds_put_format(s, ":%"PRIu16, a->max_len); | |
570 | } | |
571 | } | |
f25d0cf3 | 572 | } |
c2d936a4 BP |
573 | \f |
574 | /* Group actions. */ | |
f25d0cf3 BP |
575 | |
576 | static enum ofperr | |
f3cd3ac7 JS |
577 | decode_OFPAT_RAW11_GROUP(uint32_t group_id, |
578 | enum ofp_version ofp_version OVS_UNUSED, | |
579 | struct ofpbuf *out) | |
f25d0cf3 | 580 | { |
c2d936a4 BP |
581 | ofpact_put_GROUP(out)->group_id = group_id; |
582 | return 0; | |
583 | } | |
f25d0cf3 | 584 | |
c2d936a4 BP |
585 | static void |
586 | encode_GROUP(const struct ofpact_group *group, | |
587 | enum ofp_version ofp_version, struct ofpbuf *out) | |
588 | { | |
589 | if (ofp_version == OFP10_VERSION) { | |
590 | /* XXX */ | |
591 | } else { | |
592 | put_OFPAT11_GROUP(out, group->group_id); | |
f25d0cf3 | 593 | } |
c2d936a4 | 594 | } |
f25d0cf3 | 595 | |
cab50449 | 596 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
597 | parse_GROUP(char *arg, struct ofpbuf *ofpacts, |
598 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
599 | { | |
600 | return str_to_u32(arg, &ofpact_put_GROUP(ofpacts)->group_id); | |
f25d0cf3 BP |
601 | } |
602 | ||
603 | static void | |
c2d936a4 | 604 | format_GROUP(const struct ofpact_group *a, struct ds *s) |
f25d0cf3 | 605 | { |
b1c5bf1f QM |
606 | ds_put_format(s, "%sgroup:%s%"PRIu32, |
607 | colors.special, colors.end, a->group_id); | |
f25d0cf3 | 608 | } |
c2d936a4 BP |
609 | \f |
610 | /* Action structure for NXAST_CONTROLLER. | |
611 | * | |
612 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
613 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
614 | * specifying: | |
615 | * | |
616 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
617 | * | |
618 | * - 'controller_id': The ID of the controller connection to which the | |
619 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
620 | * sent only to controllers that have the specified controller connection | |
621 | * ID. See "struct nx_controller_id" for more information. */ | |
622 | struct nx_action_controller { | |
623 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
624 | ovs_be16 len; /* Length is 16. */ | |
625 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
626 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
627 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
628 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
629 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
630 | uint8_t zero; /* Must be zero. */ | |
631 | }; | |
632 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 633 | |
77ab5fd2 BP |
634 | /* Properties for NXAST_CONTROLLER2. |
635 | * | |
636 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
637 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
638 | enum nx_action_controller2_prop_type { |
639 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
640 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
641 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
642 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 643 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
bdcad671 BP |
644 | }; |
645 | ||
646 | /* Action structure for NXAST_CONTROLLER2. | |
647 | * | |
648 | * This replacement for NXAST_CONTROLLER makes it extensible via properties. */ | |
649 | struct nx_action_controller2 { | |
650 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
651 | ovs_be16 len; /* Length is 16 or more. */ | |
652 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
653 | ovs_be16 subtype; /* NXAST_CONTROLLER2. */ | |
654 | uint8_t zeros[6]; /* Must be zero. */ | |
655 | /* Followed by NXAC2PT_* properties. */ | |
656 | }; | |
657 | OFP_ASSERT(sizeof(struct nx_action_controller2) == 16); | |
658 | ||
c2d936a4 BP |
659 | static enum ofperr |
660 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 661 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 662 | struct ofpbuf *out) |
f25d0cf3 BP |
663 | { |
664 | struct ofpact_controller *oc; | |
665 | ||
666 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 667 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
668 | oc->max_len = ntohs(nac->max_len); |
669 | oc->controller_id = ntohs(nac->controller_id); | |
670 | oc->reason = nac->reason; | |
ce058104 | 671 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
672 | |
673 | return 0; | |
674 | } | |
675 | ||
676 | static enum ofperr | |
677 | decode_NXAST_RAW_CONTROLLER2(const struct nx_action_controller2 *nac2, | |
678 | enum ofp_version ofp_version OVS_UNUSED, | |
679 | struct ofpbuf *out) | |
680 | { | |
681 | if (!is_all_zeros(nac2->zeros, sizeof nac2->zeros)) { | |
682 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
683 | } | |
684 | ||
685 | size_t start_ofs = out->size; | |
686 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
687 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
688 | oc->max_len = UINT16_MAX; | |
689 | oc->reason = OFPR_ACTION; | |
690 | ||
691 | struct ofpbuf properties; | |
692 | ofpbuf_use_const(&properties, nac2, ntohs(nac2->len)); | |
693 | ofpbuf_pull(&properties, sizeof *nac2); | |
694 | ||
695 | while (properties.size > 0) { | |
696 | struct ofpbuf payload; | |
697 | uint64_t type; | |
698 | ||
699 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
700 | if (error) { | |
701 | return error; | |
702 | } | |
703 | ||
704 | switch (type) { | |
705 | case NXAC2PT_MAX_LEN: | |
706 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
707 | break; | |
708 | ||
709 | case NXAC2PT_CONTROLLER_ID: | |
710 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
711 | break; | |
712 | ||
713 | case NXAC2PT_REASON: { | |
714 | uint8_t u8; | |
715 | error = ofpprop_parse_u8(&payload, &u8); | |
716 | oc->reason = u8; | |
717 | break; | |
718 | } | |
719 | ||
720 | case NXAC2PT_USERDATA: | |
721 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
722 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
723 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
724 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
725 | break; | |
726 | ||
77ab5fd2 BP |
727 | case NXAC2PT_PAUSE: |
728 | oc->pause = true; | |
729 | break; | |
730 | ||
bdcad671 BP |
731 | default: |
732 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
733 | break; | |
734 | } | |
735 | if (error) { | |
736 | return error; | |
737 | } | |
738 | } | |
739 | ||
ce058104 | 740 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 741 | |
c2d936a4 | 742 | return 0; |
f25d0cf3 BP |
743 | } |
744 | ||
c2d936a4 BP |
745 | static void |
746 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
747 | enum ofp_version ofp_version OVS_UNUSED, | |
748 | struct ofpbuf *out) | |
4cceacb9 | 749 | { |
bdcad671 | 750 | if (controller->userdata_len |
77ab5fd2 | 751 | || controller->pause |
bdcad671 BP |
752 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
753 | size_t start_ofs = out->size; | |
754 | put_NXAST_CONTROLLER2(out); | |
755 | if (controller->max_len != UINT16_MAX) { | |
756 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
757 | } | |
758 | if (controller->controller_id != 0) { | |
759 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
760 | controller->controller_id); | |
761 | } | |
762 | if (controller->reason != OFPR_ACTION) { | |
763 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
764 | } | |
765 | if (controller->userdata_len != 0) { | |
766 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
767 | controller->userdata_len); | |
768 | } | |
77ab5fd2 BP |
769 | if (controller->pause) { |
770 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
771 | } | |
bdcad671 BP |
772 | pad_ofpat(out, start_ofs); |
773 | } else { | |
774 | struct nx_action_controller *nac; | |
4cceacb9 | 775 | |
bdcad671 BP |
776 | nac = put_NXAST_CONTROLLER(out); |
777 | nac->max_len = htons(controller->max_len); | |
778 | nac->controller_id = htons(controller->controller_id); | |
779 | nac->reason = controller->reason; | |
780 | } | |
c2d936a4 BP |
781 | } |
782 | ||
cab50449 | 783 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
784 | parse_CONTROLLER(char *arg, struct ofpbuf *ofpacts, |
785 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
786 | { | |
787 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
788 | uint16_t controller_id = 0; | |
789 | uint16_t max_len = UINT16_MAX; | |
bdcad671 | 790 | const char *userdata = NULL; |
77ab5fd2 | 791 | bool pause = false; |
c2d936a4 BP |
792 | |
793 | if (!arg[0]) { | |
794 | /* Use defaults. */ | |
795 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
796 | char *error = str_to_u16(arg, "max_len", &max_len); | |
797 | if (error) { | |
798 | return error; | |
799 | } | |
800 | } else { | |
801 | char *name, *value; | |
802 | ||
803 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
804 | if (!strcmp(name, "reason")) { | |
805 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
806 | return xasprintf("unknown reason \"%s\"", value); | |
807 | } | |
808 | } else if (!strcmp(name, "max_len")) { | |
809 | char *error = str_to_u16(value, "max_len", &max_len); | |
810 | if (error) { | |
811 | return error; | |
812 | } | |
813 | } else if (!strcmp(name, "id")) { | |
814 | char *error = str_to_u16(value, "id", &controller_id); | |
815 | if (error) { | |
816 | return error; | |
817 | } | |
bdcad671 BP |
818 | } else if (!strcmp(name, "userdata")) { |
819 | userdata = value; | |
77ab5fd2 BP |
820 | } else if (!strcmp(name, "pause")) { |
821 | pause = true; | |
c2d936a4 BP |
822 | } else { |
823 | return xasprintf("unknown key \"%s\" parsing controller " | |
824 | "action", name); | |
825 | } | |
826 | } | |
4cceacb9 JS |
827 | } |
828 | ||
77ab5fd2 | 829 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause) { |
c2d936a4 | 830 | struct ofpact_output *output; |
4cceacb9 | 831 | |
c2d936a4 BP |
832 | output = ofpact_put_OUTPUT(ofpacts); |
833 | output->port = OFPP_CONTROLLER; | |
834 | output->max_len = max_len; | |
835 | } else { | |
836 | struct ofpact_controller *controller; | |
837 | ||
838 | controller = ofpact_put_CONTROLLER(ofpacts); | |
839 | controller->max_len = max_len; | |
840 | controller->reason = reason; | |
841 | controller->controller_id = controller_id; | |
77ab5fd2 | 842 | controller->pause = pause; |
bdcad671 BP |
843 | |
844 | if (userdata) { | |
845 | size_t start_ofs = ofpacts->size; | |
846 | const char *end = ofpbuf_put_hex(ofpacts, userdata, NULL); | |
847 | if (*end) { | |
848 | return xstrdup("bad hex digit in `controller' " | |
849 | "action `userdata'"); | |
850 | } | |
851 | size_t userdata_len = ofpacts->size - start_ofs; | |
852 | controller = ofpacts->header; | |
853 | controller->userdata_len = userdata_len; | |
854 | } | |
ce058104 | 855 | ofpact_finish_CONTROLLER(ofpacts, &controller); |
c2d936a4 BP |
856 | } |
857 | ||
858 | return NULL; | |
4cceacb9 JS |
859 | } |
860 | ||
bdcad671 BP |
861 | static void |
862 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
863 | { | |
864 | for (size_t i = 0; i < len; i++) { | |
865 | if (i) { | |
866 | ds_put_char(s, '.'); | |
867 | } | |
868 | ds_put_format(s, "%02"PRIx8, data[i]); | |
869 | } | |
870 | } | |
871 | ||
f25d0cf3 | 872 | static void |
c2d936a4 | 873 | format_CONTROLLER(const struct ofpact_controller *a, struct ds *s) |
f25d0cf3 | 874 | { |
77ab5fd2 BP |
875 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
876 | && !a->pause) { | |
b1c5bf1f QM |
877 | ds_put_format(s, "%sCONTROLLER:%s%"PRIu16, |
878 | colors.special, colors.end, a->max_len); | |
c2d936a4 BP |
879 | } else { |
880 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 881 | |
b1c5bf1f | 882 | ds_put_format(s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
883 | if (reason != OFPR_ACTION) { |
884 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
885 | ||
b1c5bf1f | 886 | ds_put_format(s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
887 | ofputil_packet_in_reason_to_string( |
888 | reason, reasonbuf, sizeof reasonbuf)); | |
889 | } | |
890 | if (a->max_len != UINT16_MAX) { | |
b1c5bf1f QM |
891 | ds_put_format(s, "%smax_len=%s%"PRIu16",", |
892 | colors.param, colors.end, a->max_len); | |
c2d936a4 BP |
893 | } |
894 | if (a->controller_id != 0) { | |
b1c5bf1f QM |
895 | ds_put_format(s, "%sid=%s%"PRIu16",", |
896 | colors.param, colors.end, a->controller_id); | |
c2d936a4 | 897 | } |
bdcad671 | 898 | if (a->userdata_len) { |
b1c5bf1f | 899 | ds_put_format(s, "%suserdata=%s", colors.param, colors.end); |
bdcad671 BP |
900 | format_hex_arg(s, a->userdata, a->userdata_len); |
901 | ds_put_char(s, ','); | |
902 | } | |
77ab5fd2 | 903 | if (a->pause) { |
b1c5bf1f | 904 | ds_put_format(s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 905 | } |
c2d936a4 | 906 | ds_chomp(s, ','); |
b1c5bf1f | 907 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 | 908 | } |
f25d0cf3 | 909 | } |
c2d936a4 BP |
910 | \f |
911 | /* Enqueue action. */ | |
912 | struct ofp10_action_enqueue { | |
913 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
914 | ovs_be16 len; /* Len is 16. */ | |
915 | ovs_be16 port; /* Port that queue belongs. Should | |
916 | refer to a valid physical port | |
917 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
918 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
919 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
920 | }; | |
921 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 922 | |
c2d967a5 | 923 | static enum ofperr |
c2d936a4 | 924 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 925 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 926 | struct ofpbuf *out) |
c2d967a5 | 927 | { |
c2d936a4 | 928 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 929 | |
c2d936a4 BP |
930 | enqueue = ofpact_put_ENQUEUE(out); |
931 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
932 | enqueue->queue = ntohl(oae->queue_id); | |
933 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
934 | && enqueue->port != OFPP_IN_PORT | |
935 | && enqueue->port != OFPP_LOCAL) { | |
936 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
937 | } | |
938 | return 0; | |
c2d967a5 MM |
939 | } |
940 | ||
c2d936a4 BP |
941 | static void |
942 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
943 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 944 | { |
c2d936a4 BP |
945 | if (ofp_version == OFP10_VERSION) { |
946 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 947 | |
c2d936a4 BP |
948 | oae = put_OFPAT10_ENQUEUE(out); |
949 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
950 | oae->queue_id = htonl(enqueue->queue); | |
951 | } else { | |
952 | /* XXX */ | |
c2d967a5 | 953 | } |
c2d936a4 | 954 | } |
c2d967a5 | 955 | |
cab50449 | 956 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
957 | parse_ENQUEUE(char *arg, struct ofpbuf *ofpacts, |
958 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
959 | { | |
960 | char *sp = NULL; | |
961 | char *port = strtok_r(arg, ":q,", &sp); | |
962 | char *queue = strtok_r(NULL, "", &sp); | |
963 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 964 | |
c2d936a4 BP |
965 | if (port == NULL || queue == NULL) { |
966 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
967 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
968 | } |
969 | ||
c2d936a4 BP |
970 | enqueue = ofpact_put_ENQUEUE(ofpacts); |
971 | if (!ofputil_port_from_string(port, &enqueue->port)) { | |
972 | return xasprintf("%s: enqueue to unknown port", port); | |
973 | } | |
974 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
975 | } |
976 | ||
c2d936a4 BP |
977 | static void |
978 | format_ENQUEUE(const struct ofpact_enqueue *a, struct ds *s) | |
29089a54 | 979 | { |
b1c5bf1f | 980 | ds_put_format(s, "%senqueue:%s", colors.param, colors.end); |
c2d936a4 BP |
981 | ofputil_format_port(a->port, s); |
982 | ds_put_format(s, ":%"PRIu32, a->queue); | |
983 | } | |
984 | \f | |
985 | /* Action structure for NXAST_OUTPUT_REG. | |
986 | * | |
987 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
988 | * | |
989 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
990 | * the NXAST_REG_LOAD action. | |
991 | * | |
992 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
993 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
994 | * | |
995 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
996 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
997 | * field of OFPAT_OUTPUT. | |
998 | * | |
999 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1000 | struct nx_action_output_reg { | |
1001 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1002 | ovs_be16 len; /* 24. */ | |
1003 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1004 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1005 | |
c2d936a4 BP |
1006 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1007 | ovs_be32 src; /* Source. */ | |
29089a54 | 1008 | |
c2d936a4 | 1009 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1010 | |
c2d936a4 BP |
1011 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1012 | }; | |
1013 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1014 | |
bad8a439 BP |
1015 | /* Action structure for NXAST_OUTPUT_REG2. |
1016 | * | |
1017 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1018 | * experimenter OXM as 'src'. | |
1019 | */ | |
1020 | struct nx_action_output_reg2 { | |
1021 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1022 | ovs_be16 len; /* 24. */ | |
1023 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1024 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1025 | ||
1026 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1027 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1028 | ||
1029 | /* Followed by: | |
1030 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1031 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1032 | uint8_t pad[10]; | |
1033 | }; | |
1034 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1035 | ||
a7a2d006 | 1036 | static enum ofperr |
c2d936a4 | 1037 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1038 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1039 | struct ofpbuf *out) |
a7a2d006 | 1040 | { |
c2d936a4 | 1041 | struct ofpact_output_reg *output_reg; |
a7a2d006 | 1042 | |
c2d936a4 | 1043 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1044 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1045 | } | |
a7a2d006 | 1046 | |
c2d936a4 | 1047 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1048 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1049 | output_reg->src.field = mf_from_nxm_header(ntohl(naor->src)); |
1050 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1051 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1052 | output_reg->max_len = ntohs(naor->max_len); | |
1053 | ||
1054 | return mf_check_src(&output_reg->src, NULL); | |
a7a2d006 JS |
1055 | } |
1056 | ||
bad8a439 BP |
1057 | static enum ofperr |
1058 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 JS |
1059 | enum ofp_version ofp_version OVS_UNUSED, |
1060 | struct ofpbuf *out) | |
bad8a439 BP |
1061 | { |
1062 | struct ofpact_output_reg *output_reg; | |
bad8a439 BP |
1063 | output_reg = ofpact_put_OUTPUT_REG(out); |
1064 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1065 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1066 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1067 | output_reg->max_len = ntohs(naor->max_len); | |
1068 | ||
0a2869d5 | 1069 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1070 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 BP |
1071 | |
1072 | enum ofperr error = nx_pull_header(&b, &output_reg->src.field, NULL); | |
bad8a439 BP |
1073 | if (error) { |
1074 | return error; | |
1075 | } | |
6fd6ed71 | 1076 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1077 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1078 | } | |
1079 | ||
1080 | return mf_check_src(&output_reg->src, NULL); | |
1081 | } | |
1082 | ||
c2d936a4 BP |
1083 | static void |
1084 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1085 | enum ofp_version ofp_version OVS_UNUSED, | |
1086 | struct ofpbuf *out) | |
f25d0cf3 | 1087 | { |
bad8a439 BP |
1088 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1089 | * cannot be encoded in the older form, encode it as | |
1090 | * NXAST_RAW_OUTPUT_REG2. */ | |
1091 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1092 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1093 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1094 | size_t size = out->size; |
bad8a439 BP |
1095 | |
1096 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1097 | output_reg->src.n_bits); | |
1098 | naor->max_len = htons(output_reg->max_len); | |
1099 | ||
6fd6ed71 | 1100 | out->size = size - sizeof naor->pad; |
bad8a439 | 1101 | nx_put_header(out, output_reg->src.field->id, 0, false); |
6fd6ed71 | 1102 | out->size = size; |
bad8a439 BP |
1103 | } else { |
1104 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1105 | |
bad8a439 BP |
1106 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1107 | output_reg->src.n_bits); | |
1108 | naor->src = htonl(mf_nxm_header(output_reg->src.field->id)); | |
1109 | naor->max_len = htons(output_reg->max_len); | |
1110 | } | |
f25d0cf3 BP |
1111 | } |
1112 | ||
cab50449 | 1113 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1114 | parse_OUTPUT_REG(const char *arg, struct ofpbuf *ofpacts, |
1115 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
f25d0cf3 | 1116 | { |
c2d936a4 | 1117 | return parse_OUTPUT(arg, ofpacts, usable_protocols); |
f25d0cf3 BP |
1118 | } |
1119 | ||
c2d936a4 BP |
1120 | static void |
1121 | format_OUTPUT_REG(const struct ofpact_output_reg *a, struct ds *s) | |
f25d0cf3 | 1122 | { |
b1c5bf1f | 1123 | ds_put_format(s, "%soutput:%s", colors.special, colors.end); |
c2d936a4 BP |
1124 | mf_format_subfield(&a->src, s); |
1125 | } | |
1126 | \f | |
1127 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1128 | * | |
1129 | * The bundle actions choose a slave from a supplied list of options. | |
1130 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1131 | * selection to a register. | |
1132 | * | |
1133 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1134 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1135 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1136 | * the total length of the action a multiple of 8. | |
1137 | * | |
1138 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1139 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1140 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1141 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1142 | * unsupported slave types. | |
1143 | * | |
1144 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1145 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1146 | * it should reject the action. | |
1147 | * | |
1148 | * Several algorithms take into account liveness when selecting slaves. The | |
1149 | * liveness of a slave is implementation defined (with one exception), but will | |
1150 | * generally take into account things like its carrier status and the results | |
1151 | * of any link monitoring protocols which happen to be running on it. In order | |
1152 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
1153 | * considered live. | |
1154 | * | |
1155 | * Some slave selection strategies require the use of a hash function, in which | |
1156 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1157 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1158 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1159 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1160 | * of 'basis' yield different hash results. | |
1161 | * | |
1162 | * The 'zero' parameter at the end of the action structure is reserved for | |
1163 | * future use. Switches are required to reject actions which have nonzero | |
1164 | * bytes in the 'zero' field. | |
1165 | * | |
1166 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1167 | * should reject actions which have nonzero bytes in either of these fields. | |
1168 | * | |
1169 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1170 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1171 | * similar to those for the NXAST_REG_LOAD action. */ | |
1172 | struct nx_action_bundle { | |
1173 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1174 | ovs_be16 len; /* Length including slaves. */ | |
1175 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1176 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1177 | |
c2d936a4 BP |
1178 | /* Slave choice algorithm to apply to hash value. */ |
1179 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1180 | |
c2d936a4 BP |
1181 | /* What fields to hash and how. */ |
1182 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1183 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1184 | |
c2d936a4 BP |
1185 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1186 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1187 | |
c2d936a4 BP |
1188 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1189 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1190 | |
c2d936a4 BP |
1191 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1192 | }; | |
1193 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1194 | |
c2d936a4 BP |
1195 | static enum ofperr |
1196 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
1197 | struct ofpbuf *ofpacts) | |
1198 | { | |
1199 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1200 | struct ofpact_bundle *bundle; | |
1201 | uint32_t slave_type; | |
1202 | size_t slaves_size, i; | |
1203 | enum ofperr error; | |
bd85dac1 | 1204 | |
c2d936a4 BP |
1205 | bundle = ofpact_put_BUNDLE(ofpacts); |
1206 | ||
1207 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1208 | bundle->basis = ntohs(nab->basis); | |
1209 | bundle->fields = ntohs(nab->fields); | |
1210 | bundle->algorithm = ntohs(nab->algorithm); | |
1211 | slave_type = ntohl(nab->slave_type); | |
1212 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1213 | ||
1214 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1215 | if (!flow_hash_fields_valid(bundle->fields)) { | |
1216 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) bundle->fields); | |
1217 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { | |
1218 | VLOG_WARN_RL(&rl, "too many slaves"); | |
1219 | } else if (bundle->algorithm != NX_BD_ALG_HRW | |
1220 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
1221 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) bundle->algorithm); | |
508a9338 | 1222 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
c2d936a4 BP |
1223 | VLOG_WARN_RL(&rl, "unsupported slave type %"PRIu16, slave_type); |
1224 | } else { | |
1225 | error = 0; | |
1226 | } | |
bd85dac1 | 1227 | |
c2d936a4 BP |
1228 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
1229 | VLOG_WARN_RL(&rl, "reserved field is nonzero"); | |
1230 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1231 | } | |
f25d0cf3 | 1232 | |
c2d936a4 BP |
1233 | if (load) { |
1234 | bundle->dst.field = mf_from_nxm_header(ntohl(nab->dst)); | |
1235 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); | |
1236 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
f25d0cf3 | 1237 | |
c2d936a4 BP |
1238 | if (bundle->dst.n_bits < 16) { |
1239 | VLOG_WARN_RL(&rl, "bundle_load action requires at least 16 bit " | |
1240 | "destination."); | |
1241 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1242 | } | |
1243 | } else { | |
1244 | if (nab->ofs_nbits || nab->dst) { | |
1245 | VLOG_WARN_RL(&rl, "bundle action has nonzero reserved fields"); | |
1246 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1247 | } | |
1248 | } | |
f25d0cf3 | 1249 | |
c2d936a4 BP |
1250 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
1251 | VLOG_WARN_RL(&rl, "Nicira action %s only has %"PRIuSIZE" bytes " | |
1252 | "allocated for slaves. %"PRIuSIZE" bytes are required " | |
1253 | "for %"PRIu16" slaves.", | |
1254 | load ? "bundle_load" : "bundle", slaves_size, | |
1255 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1256 | error = OFPERR_OFPBAC_BAD_LEN; | |
1257 | } | |
f25d0cf3 | 1258 | |
c2d936a4 BP |
1259 | for (i = 0; i < bundle->n_slaves; i++) { |
1260 | uint16_t ofp_port = ntohs(((ovs_be16 *)(nab + 1))[i]); | |
1261 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); | |
19b58f3c | 1262 | bundle = ofpacts->header; |
c2d936a4 | 1263 | } |
f25d0cf3 | 1264 | |
ce058104 | 1265 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1266 | if (!error) { |
1267 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1268 | } | |
1269 | return error; | |
1270 | } | |
f25d0cf3 | 1271 | |
c2d936a4 | 1272 | static enum ofperr |
f3cd3ac7 JS |
1273 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1274 | enum ofp_version ofp_version OVS_UNUSED, | |
1275 | struct ofpbuf *out) | |
c2d936a4 BP |
1276 | { |
1277 | return decode_bundle(false, nab, out); | |
1278 | } | |
f25d0cf3 | 1279 | |
c2d936a4 BP |
1280 | static enum ofperr |
1281 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1282 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1283 | struct ofpbuf *out) |
1284 | { | |
1285 | return decode_bundle(true, nab, out); | |
1286 | } | |
c2d967a5 | 1287 | |
c2d936a4 BP |
1288 | static void |
1289 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1290 | enum ofp_version ofp_version OVS_UNUSED, | |
1291 | struct ofpbuf *out) | |
1292 | { | |
1293 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1294 | struct nx_action_bundle *nab; | |
1295 | ovs_be16 *slaves; | |
1296 | size_t i; | |
f25d0cf3 | 1297 | |
c2d936a4 BP |
1298 | nab = (bundle->dst.field |
1299 | ? put_NXAST_BUNDLE_LOAD(out) | |
1300 | : put_NXAST_BUNDLE(out)); | |
1301 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1302 | nab->algorithm = htons(bundle->algorithm); | |
1303 | nab->fields = htons(bundle->fields); | |
1304 | nab->basis = htons(bundle->basis); | |
508a9338 | 1305 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1306 | nab->n_slaves = htons(bundle->n_slaves); |
1307 | if (bundle->dst.field) { | |
1308 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1309 | bundle->dst.n_bits); | |
508a9338 | 1310 | nab->dst = htonl(mf_nxm_header(bundle->dst.field->id)); |
c2d936a4 | 1311 | } |
f25d0cf3 | 1312 | |
c2d936a4 BP |
1313 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1314 | for (i = 0; i < bundle->n_slaves; i++) { | |
1315 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1316 | } | |
1317 | } | |
b02475c5 | 1318 | |
cab50449 | 1319 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1320 | parse_BUNDLE(const char *arg, struct ofpbuf *ofpacts, |
1321 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1322 | { | |
1323 | return bundle_parse(arg, ofpacts); | |
1324 | } | |
b02475c5 | 1325 | |
cab50449 | 1326 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1327 | parse_bundle_load(const char *arg, struct ofpbuf *ofpacts) |
1328 | { | |
1329 | return bundle_parse_load(arg, ofpacts); | |
1330 | } | |
097d4939 | 1331 | |
c2d936a4 BP |
1332 | static void |
1333 | format_BUNDLE(const struct ofpact_bundle *a, struct ds *s) | |
1334 | { | |
1335 | bundle_format(a, s); | |
1336 | } | |
1337 | \f | |
1338 | /* Set VLAN actions. */ | |
097d4939 | 1339 | |
c2d936a4 BP |
1340 | static enum ofperr |
1341 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1342 | { | |
1343 | if (vid & ~0xfff) { | |
1344 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1345 | } else { | |
1346 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1347 | vlan_vid->vlan_vid = vid; | |
1348 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1349 | return 0; | |
1350 | } | |
1351 | } | |
0f3f3c3d | 1352 | |
c2d936a4 | 1353 | static enum ofperr |
f3cd3ac7 JS |
1354 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1355 | enum ofp_version ofp_version OVS_UNUSED, | |
1356 | struct ofpbuf *out) | |
c2d936a4 BP |
1357 | { |
1358 | return decode_set_vlan_vid(vid, true, out); | |
1359 | } | |
b676167a | 1360 | |
c2d936a4 | 1361 | static enum ofperr |
f3cd3ac7 JS |
1362 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1363 | enum ofp_version ofp_version OVS_UNUSED, | |
1364 | struct ofpbuf *out) | |
c2d936a4 BP |
1365 | { |
1366 | return decode_set_vlan_vid(vid, false, out); | |
1367 | } | |
29089a54 | 1368 | |
c2d936a4 BP |
1369 | static void |
1370 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1371 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1372 | { | |
1373 | uint16_t vid = vlan_vid->vlan_vid; | |
1374 | ||
1375 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1376 | * for such a feature. */ | |
1377 | if (ofp_version > OFP10_VERSION | |
1378 | && vlan_vid->push_vlan_if_needed | |
1379 | && !vlan_vid->flow_has_vlan) { | |
1380 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1381 | } |
1382 | ||
c2d936a4 BP |
1383 | if (ofp_version == OFP10_VERSION) { |
1384 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1385 | } else if (ofp_version == OFP11_VERSION) { | |
1386 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1387 | } else { | |
1388 | ofpact_put_set_field(out, ofp_version, | |
1389 | MFF_VLAN_VID, vid | OFPVID12_PRESENT); | |
1390 | } | |
f25d0cf3 BP |
1391 | } |
1392 | ||
cab50449 | 1393 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 1394 | parse_set_vlan_vid(char *arg, struct ofpbuf *ofpacts, bool push_vlan_if_needed) |
d01c980f | 1395 | { |
ca287d20 | 1396 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1397 | uint16_t vid; |
1398 | char *error; | |
d01c980f | 1399 | |
c2d936a4 | 1400 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1401 | if (error) { |
1402 | return error; | |
1403 | } | |
1404 | ||
c2d936a4 BP |
1405 | if (vid & ~VLAN_VID_MASK) { |
1406 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1407 | } |
c2d936a4 BP |
1408 | vlan_vid = ofpact_put_SET_VLAN_VID(ofpacts); |
1409 | vlan_vid->vlan_vid = vid; | |
1410 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1411 | return NULL; | |
1412 | } | |
d01c980f | 1413 | |
cab50449 | 1414 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1415 | parse_SET_VLAN_VID(char *arg, struct ofpbuf *ofpacts, |
1416 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1417 | { | |
1418 | return parse_set_vlan_vid(arg, ofpacts, false); | |
d01c980f BP |
1419 | } |
1420 | ||
c2d936a4 BP |
1421 | static void |
1422 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, struct ds *s) | |
1423 | { | |
b1c5bf1f | 1424 | ds_put_format(s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1425 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1426 | colors.end, a->vlan_vid); |
c2d936a4 BP |
1427 | } |
1428 | \f | |
1429 | /* Set PCP actions. */ | |
e3f8f887 | 1430 | |
c2d936a4 BP |
1431 | static enum ofperr |
1432 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1433 | { |
c2d936a4 BP |
1434 | if (pcp & ~7) { |
1435 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1436 | } else { | |
1437 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1438 | vlan_pcp->vlan_pcp = pcp; | |
1439 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1440 | return 0; | |
1441 | } | |
f25d0cf3 BP |
1442 | } |
1443 | ||
c2d936a4 | 1444 | static enum ofperr |
f3cd3ac7 JS |
1445 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1446 | enum ofp_version ofp_version OVS_UNUSED, | |
1447 | struct ofpbuf *out) | |
f25d0cf3 | 1448 | { |
c2d936a4 | 1449 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1450 | } |
1451 | ||
c2d936a4 | 1452 | static enum ofperr |
f3cd3ac7 JS |
1453 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1454 | enum ofp_version ofp_version OVS_UNUSED, | |
1455 | struct ofpbuf *out) | |
c2d936a4 BP |
1456 | { |
1457 | return decode_set_vlan_pcp(pcp, false, out); | |
1458 | } | |
f25d0cf3 | 1459 | |
699dddf1 | 1460 | static void |
c2d936a4 BP |
1461 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1462 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1463 | { |
c2d936a4 BP |
1464 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1465 | ||
1466 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1467 | * for such a feature. */ | |
1468 | if (ofp_version > OFP10_VERSION | |
1469 | && vlan_pcp->push_vlan_if_needed | |
1470 | && !vlan_pcp->flow_has_vlan) { | |
1471 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1472 | } | |
699dddf1 | 1473 | |
c2d936a4 BP |
1474 | if (ofp_version == OFP10_VERSION) { |
1475 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1476 | } else if (ofp_version == OFP11_VERSION) { | |
1477 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1478 | } else { | |
1479 | ofpact_put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); | |
699dddf1 BP |
1480 | } |
1481 | } | |
1482 | ||
cab50449 | 1483 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 1484 | parse_set_vlan_pcp(char *arg, struct ofpbuf *ofpacts, bool push_vlan_if_needed) |
f25d0cf3 | 1485 | { |
c2d936a4 BP |
1486 | struct ofpact_vlan_pcp *vlan_pcp; |
1487 | uint8_t pcp; | |
1488 | char *error; | |
e3f8f887 | 1489 | |
c2d936a4 BP |
1490 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1491 | if (error) { | |
699dddf1 | 1492 | return error; |
f25d0cf3 BP |
1493 | } |
1494 | ||
c2d936a4 BP |
1495 | if (pcp & ~7) { |
1496 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1497 | } | |
1498 | vlan_pcp = ofpact_put_SET_VLAN_PCP(ofpacts); | |
1499 | vlan_pcp->vlan_pcp = pcp; | |
1500 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1501 | return NULL; | |
1502 | } | |
1503 | ||
cab50449 | 1504 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1505 | parse_SET_VLAN_PCP(char *arg, struct ofpbuf *ofpacts, |
1506 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1507 | { | |
1508 | return parse_set_vlan_pcp(arg, ofpacts, false); | |
1509 | } | |
1510 | ||
1511 | static void | |
1512 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, struct ds *s) | |
1513 | { | |
b1c5bf1f | 1514 | ds_put_format(s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1515 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1516 | colors.end, a->vlan_pcp); |
c2d936a4 BP |
1517 | } |
1518 | \f | |
1519 | /* Strip VLAN actions. */ | |
1520 | ||
1521 | static enum ofperr | |
1522 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1523 | { | |
1524 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1525 | return 0; |
1526 | } | |
1527 | ||
8f2cded4 | 1528 | static enum ofperr |
c2d936a4 | 1529 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1530 | { |
c2d936a4 BP |
1531 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1532 | return 0; | |
1533 | } | |
f25d0cf3 | 1534 | |
c2d936a4 BP |
1535 | static void |
1536 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1537 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1538 | { | |
1539 | if (ofp_version == OFP10_VERSION) { | |
1540 | put_OFPAT10_STRIP_VLAN(out); | |
1541 | } else { | |
1542 | put_OFPAT11_POP_VLAN(out); | |
1543 | } | |
1544 | } | |
f25d0cf3 | 1545 | |
cab50449 | 1546 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1547 | parse_STRIP_VLAN(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
1548 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1549 | { | |
1550 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
1551 | return NULL; | |
1552 | } | |
1553 | ||
cab50449 | 1554 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1555 | parse_pop_vlan(struct ofpbuf *ofpacts) |
1556 | { | |
1557 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; | |
1558 | return NULL; | |
1559 | } | |
1560 | ||
1561 | static void | |
1562 | format_STRIP_VLAN(const struct ofpact_null *a, struct ds *s) | |
1563 | { | |
b1c5bf1f QM |
1564 | ds_put_format(s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
1565 | ? "%spop_vlan%s" | |
1566 | : "%sstrip_vlan%s"), | |
1567 | colors.value, colors.end); | |
c2d936a4 BP |
1568 | } |
1569 | \f | |
1570 | /* Push VLAN action. */ | |
1571 | ||
1572 | static enum ofperr | |
f3cd3ac7 JS |
1573 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1574 | enum ofp_version ofp_version OVS_UNUSED, | |
1575 | struct ofpbuf *out) | |
c2d936a4 BP |
1576 | { |
1577 | if (eth_type != htons(ETH_TYPE_VLAN_8021Q)) { | |
1578 | /* XXX 802.1AD(QinQ) isn't supported at the moment */ | |
1579 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
f25d0cf3 | 1580 | } |
c2d936a4 BP |
1581 | ofpact_put_PUSH_VLAN(out); |
1582 | return 0; | |
1583 | } | |
f25d0cf3 | 1584 | |
c2d936a4 BP |
1585 | static void |
1586 | encode_PUSH_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1587 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1588 | { | |
1589 | if (ofp_version == OFP10_VERSION) { | |
1590 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1591 | * follow this action. */ | |
1592 | } else { | |
1593 | /* XXX ETH_TYPE_VLAN_8021AD case */ | |
1594 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 | 1595 | } |
c2d936a4 | 1596 | } |
f25d0cf3 | 1597 | |
cab50449 | 1598 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1599 | parse_PUSH_VLAN(char *arg, struct ofpbuf *ofpacts, |
1600 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1601 | { | |
1602 | uint16_t ethertype; | |
1603 | char *error; | |
1604 | ||
1605 | *usable_protocols &= OFPUTIL_P_OF11_UP; | |
1606 | error = str_to_u16(arg, "ethertype", ðertype); | |
4cceacb9 | 1607 | if (error) { |
4cceacb9 JS |
1608 | return error; |
1609 | } | |
1610 | ||
c2d936a4 BP |
1611 | if (ethertype != ETH_TYPE_VLAN_8021Q) { |
1612 | /* XXX ETH_TYPE_VLAN_8021AD case isn't supported */ | |
1613 | return xasprintf("%s: not a valid VLAN ethertype", arg); | |
f25d0cf3 | 1614 | } |
c2d936a4 BP |
1615 | |
1616 | ofpact_put_PUSH_VLAN(ofpacts); | |
1617 | return NULL; | |
d01c980f BP |
1618 | } |
1619 | ||
c2d936a4 BP |
1620 | static void |
1621 | format_PUSH_VLAN(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
8f2cded4 | 1622 | { |
c2d936a4 | 1623 | /* XXX 802.1AD case*/ |
b1c5bf1f QM |
1624 | ds_put_format(s, "%spush_vlan:%s%#"PRIx16, |
1625 | colors.param, colors.end, ETH_TYPE_VLAN_8021Q); | |
8f2cded4 | 1626 | } |
d01c980f | 1627 | \f |
c2d936a4 BP |
1628 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1629 | struct ofp_action_dl_addr { | |
1630 | ovs_be16 type; /* Type. */ | |
1631 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1632 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1633 | uint8_t pad[6]; |
1634 | }; | |
1635 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1636 | |
d01c980f | 1637 | static enum ofperr |
c2d936a4 | 1638 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1639 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1640 | struct ofpbuf *out) |
d01c980f | 1641 | { |
74ff3298 | 1642 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1643 | return 0; |
1644 | } | |
3ddcaf2d | 1645 | |
c2d936a4 BP |
1646 | static enum ofperr |
1647 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1648 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1649 | struct ofpbuf *out) |
1650 | { | |
74ff3298 | 1651 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1652 | return 0; |
1653 | } | |
d01c980f | 1654 | |
c2d936a4 BP |
1655 | static void |
1656 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1657 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1658 | struct ofpbuf *out) | |
1659 | { | |
c2d936a4 BP |
1660 | if (ofp_version < OFP12_VERSION) { |
1661 | struct ofp_action_dl_addr *oada; | |
1662 | ||
1663 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1664 | oada->dl_addr = mac->mac; |
c2d936a4 BP |
1665 | } else { |
1666 | ofpact_put_set_field(out, ofp_version, field, | |
74ff3298 | 1667 | eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1668 | } |
1669 | } | |
1670 | ||
c2d936a4 BP |
1671 | static void |
1672 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1673 | struct ofpbuf *out) | |
b2dd70be | 1674 | { |
c2d936a4 BP |
1675 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1676 | out); | |
b2dd70be | 1677 | |
c2d936a4 | 1678 | } |
b2dd70be | 1679 | |
c2d936a4 BP |
1680 | static void |
1681 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1682 | enum ofp_version ofp_version, | |
1683 | struct ofpbuf *out) | |
1684 | { | |
1685 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1686 | out); | |
b2dd70be | 1687 | |
c2d936a4 | 1688 | } |
b2dd70be | 1689 | |
cab50449 | 1690 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1691 | parse_SET_ETH_SRC(char *arg, struct ofpbuf *ofpacts, |
1692 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1693 | { | |
74ff3298 | 1694 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(ofpacts)->mac); |
c2d936a4 BP |
1695 | } |
1696 | ||
cab50449 | 1697 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1698 | parse_SET_ETH_DST(char *arg, struct ofpbuf *ofpacts, |
1699 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1700 | { | |
74ff3298 | 1701 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(ofpacts)->mac); |
b2dd70be JR |
1702 | } |
1703 | ||
1704 | static void | |
c2d936a4 | 1705 | format_SET_ETH_SRC(const struct ofpact_mac *a, struct ds *s) |
b2dd70be | 1706 | { |
b1c5bf1f QM |
1707 | ds_put_format(s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
1708 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 | 1709 | } |
b2dd70be | 1710 | |
c2d936a4 BP |
1711 | static void |
1712 | format_SET_ETH_DST(const struct ofpact_mac *a, struct ds *s) | |
1713 | { | |
b1c5bf1f QM |
1714 | ds_put_format(s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
1715 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 BP |
1716 | } |
1717 | \f | |
1718 | /* Set IPv4 address actions. */ | |
b2dd70be | 1719 | |
c2d936a4 | 1720 | static enum ofperr |
f3cd3ac7 JS |
1721 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1722 | enum ofp_version ofp_version OVS_UNUSED, | |
1723 | struct ofpbuf *out) | |
c2d936a4 BP |
1724 | { |
1725 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1726 | return 0; | |
b2dd70be JR |
1727 | } |
1728 | ||
c2d936a4 | 1729 | static enum ofperr |
f3cd3ac7 JS |
1730 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
1731 | enum ofp_version ofp_version OVS_UNUSED, | |
1732 | struct ofpbuf *out) | |
b2dd70be | 1733 | { |
c2d936a4 BP |
1734 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
1735 | return 0; | |
1736 | } | |
b2dd70be | 1737 | |
c2d936a4 BP |
1738 | static void |
1739 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
1740 | enum ofp_version ofp_version, | |
1741 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1742 | struct ofpbuf *out) | |
1743 | { | |
1744 | ovs_be32 addr = ipv4->ipv4; | |
1745 | if (ofp_version < OFP12_VERSION) { | |
1746 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 1747 | } else { |
c2d936a4 | 1748 | ofpact_put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
1749 | } |
1750 | } | |
1751 | ||
a6fd70bb | 1752 | static void |
c2d936a4 BP |
1753 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
1754 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1755 | { |
c2d936a4 BP |
1756 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
1757 | out); | |
1758 | } | |
a6fd70bb | 1759 | |
c2d936a4 BP |
1760 | static void |
1761 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
1762 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1763 | { | |
1764 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
1765 | out); | |
1766 | } | |
a6fd70bb | 1767 | |
cab50449 | 1768 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1769 | parse_SET_IPV4_SRC(char *arg, struct ofpbuf *ofpacts, |
1770 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1771 | { | |
1772 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(ofpacts)->ipv4); | |
1773 | } | |
a6fd70bb | 1774 | |
cab50449 | 1775 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1776 | parse_SET_IPV4_DST(char *arg, struct ofpbuf *ofpacts, |
1777 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1778 | { | |
1779 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(ofpacts)->ipv4); | |
1780 | } | |
a6fd70bb | 1781 | |
c2d936a4 BP |
1782 | static void |
1783 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, struct ds *s) | |
1784 | { | |
b1c5bf1f QM |
1785 | ds_put_format(s, "%smod_nw_src:%s"IP_FMT, |
1786 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 | 1787 | } |
097d4939 | 1788 | |
c2d936a4 BP |
1789 | static void |
1790 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, struct ds *s) | |
1791 | { | |
b1c5bf1f QM |
1792 | ds_put_format(s, "%smod_nw_dst:%s"IP_FMT, |
1793 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 BP |
1794 | } |
1795 | \f | |
1796 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 1797 | |
c2d936a4 | 1798 | static enum ofperr |
f3cd3ac7 JS |
1799 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
1800 | enum ofp_version ofp_version OVS_UNUSED, | |
1801 | struct ofpbuf *out) | |
c2d936a4 BP |
1802 | { |
1803 | if (dscp & ~IP_DSCP_MASK) { | |
1804 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1805 | } else { | |
1806 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
1807 | return 0; | |
a6fd70bb JR |
1808 | } |
1809 | } | |
1810 | ||
a6fd70bb | 1811 | static void |
c2d936a4 BP |
1812 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
1813 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1814 | { |
c2d936a4 BP |
1815 | if (ofp_version < OFP12_VERSION) { |
1816 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
1817 | } else { | |
1818 | ofpact_put_set_field(out, ofp_version, | |
1819 | MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); | |
1820 | } | |
1821 | } | |
a6fd70bb | 1822 | |
cab50449 | 1823 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1824 | parse_SET_IP_DSCP(char *arg, struct ofpbuf *ofpacts, |
1825 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1826 | { | |
1827 | uint8_t tos; | |
1828 | char *error; | |
a6fd70bb | 1829 | |
c2d936a4 BP |
1830 | error = str_to_u8(arg, "TOS", &tos); |
1831 | if (error) { | |
1832 | return error; | |
1833 | } | |
a6fd70bb | 1834 | |
c2d936a4 BP |
1835 | if (tos & ~IP_DSCP_MASK) { |
1836 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 1837 | } |
c2d936a4 BP |
1838 | ofpact_put_SET_IP_DSCP(ofpacts)->dscp = tos; |
1839 | return NULL; | |
a6fd70bb JR |
1840 | } |
1841 | ||
b2dd70be | 1842 | static void |
c2d936a4 | 1843 | format_SET_IP_DSCP(const struct ofpact_dscp *a, struct ds *s) |
b2dd70be | 1844 | { |
b1c5bf1f | 1845 | ds_put_format(s, "%smod_nw_tos:%s%d", colors.param, colors.end, a->dscp); |
c2d936a4 BP |
1846 | } |
1847 | \f | |
1848 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 1849 | |
c2d936a4 | 1850 | static enum ofperr |
f3cd3ac7 JS |
1851 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
1852 | enum ofp_version ofp_version OVS_UNUSED, | |
1853 | struct ofpbuf *out) | |
c2d936a4 BP |
1854 | { |
1855 | if (ecn & ~IP_ECN_MASK) { | |
1856 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 1857 | } else { |
c2d936a4 BP |
1858 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
1859 | return 0; | |
b2dd70be JR |
1860 | } |
1861 | } | |
1862 | ||
c2d936a4 BP |
1863 | static void |
1864 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
1865 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 1866 | { |
c2d936a4 BP |
1867 | uint8_t ecn = ip_ecn->ecn; |
1868 | if (ofp_version == OFP10_VERSION) { | |
1869 | /* XXX */ | |
1870 | } else if (ofp_version == OFP11_VERSION) { | |
1871 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
1872 | } else { | |
1873 | ofpact_put_set_field(out, ofp_version, MFF_IP_ECN, ecn); | |
1874 | } | |
1875 | } | |
d01c980f | 1876 | |
cab50449 | 1877 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1878 | parse_SET_IP_ECN(char *arg, struct ofpbuf *ofpacts, |
1879 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1880 | { | |
1881 | uint8_t ecn; | |
1882 | char *error; | |
d01c980f | 1883 | |
c2d936a4 | 1884 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
1885 | if (error) { |
1886 | return error; | |
1887 | } | |
1888 | ||
c2d936a4 BP |
1889 | if (ecn & ~IP_ECN_MASK) { |
1890 | return xasprintf("%s: not a valid ECN", arg); | |
1891 | } | |
1892 | ofpact_put_SET_IP_ECN(ofpacts)->ecn = ecn; | |
1893 | return NULL; | |
d01c980f BP |
1894 | } |
1895 | ||
c2d936a4 BP |
1896 | static void |
1897 | format_SET_IP_ECN(const struct ofpact_ecn *a, struct ds *s) | |
1898 | { | |
b1c5bf1f QM |
1899 | ds_put_format(s, "%smod_nw_ecn:%s%d", |
1900 | colors.param, colors.end, a->ecn); | |
c2d936a4 BP |
1901 | } |
1902 | \f | |
1903 | /* Set IPv4/v6 TTL actions. */ | |
1904 | ||
d01c980f | 1905 | static enum ofperr |
f3cd3ac7 JS |
1906 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
1907 | enum ofp_version ofp_version OVS_UNUSED, | |
1908 | struct ofpbuf *out) | |
d01c980f | 1909 | { |
c2d936a4 BP |
1910 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | static void | |
1915 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
1916 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1917 | { | |
1918 | if (ofp_version >= OFP11_VERSION) { | |
1919 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
1920 | } else { | |
1921 | /* XXX */ | |
1922 | } | |
1923 | } | |
1924 | ||
cab50449 | 1925 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1926 | parse_SET_IP_TTL(char *arg, struct ofpbuf *ofpacts, |
1927 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1928 | { | |
1929 | uint8_t ttl; | |
1930 | char *error; | |
d01c980f | 1931 | |
c2d936a4 | 1932 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
1933 | if (error) { |
1934 | return error; | |
1935 | } | |
1936 | ||
c2d936a4 BP |
1937 | ofpact_put_SET_IP_TTL(ofpacts)->ttl = ttl; |
1938 | return NULL; | |
1939 | } | |
d01c980f | 1940 | |
c2d936a4 BP |
1941 | static void |
1942 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, struct ds *s) | |
1943 | { | |
b1c5bf1f | 1944 | ds_put_format(s, "%smod_nw_ttl:%s%d", colors.param, colors.end, a->ttl); |
c2d936a4 BP |
1945 | } |
1946 | \f | |
1947 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 1948 | |
c2d936a4 | 1949 | static enum ofperr |
f3cd3ac7 JS |
1950 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
1951 | enum ofp_version ofp_version OVS_UNUSED, | |
1952 | struct ofpbuf *out) | |
c2d936a4 BP |
1953 | { |
1954 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
1955 | return 0; | |
1956 | } | |
d01c980f | 1957 | |
c2d936a4 | 1958 | static enum ofperr |
f3cd3ac7 JS |
1959 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
1960 | enum ofp_version ofp_version OVS_UNUSED, | |
1961 | struct ofpbuf *out) | |
c2d936a4 BP |
1962 | { |
1963 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
1964 | return 0; | |
1965 | } | |
d01c980f | 1966 | |
c2d936a4 BP |
1967 | static void |
1968 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
1969 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
1970 | enum mf_field_id field, struct ofpbuf *out) | |
1971 | { | |
1972 | uint16_t port = l4_port->port; | |
3e34fbdd | 1973 | |
c2d936a4 BP |
1974 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
1975 | ofpact_put_set_field(out, ofp_version, field, port); | |
1976 | } else { | |
1977 | ofpact_put_raw(out, ofp_version, raw, port); | |
1978 | } | |
1979 | } | |
8e61c110 | 1980 | |
c2d936a4 BP |
1981 | static void |
1982 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
1983 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1984 | { | |
1985 | uint8_t proto = l4_port->flow_ip_proto; | |
1986 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
1987 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
1988 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
1989 | : MFF_N_IDS); | |
276c4e7a | 1990 | |
c2d936a4 BP |
1991 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
1992 | } | |
d01c980f | 1993 | |
c2d936a4 BP |
1994 | static void |
1995 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
1996 | enum ofp_version ofp_version, | |
1997 | struct ofpbuf *out) | |
1998 | { | |
1999 | uint8_t proto = l4_port->flow_ip_proto; | |
2000 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2001 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2002 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2003 | : MFF_N_IDS); | |
d01c980f | 2004 | |
c2d936a4 BP |
2005 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2006 | } | |
7bcb1506 | 2007 | |
cab50449 | 2008 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2009 | parse_SET_L4_SRC_PORT(char *arg, struct ofpbuf *ofpacts, |
2010 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2011 | { | |
2012 | return str_to_u16(arg, "source port", | |
2013 | &ofpact_put_SET_L4_SRC_PORT(ofpacts)->port); | |
2014 | } | |
d01c980f | 2015 | |
cab50449 | 2016 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2017 | parse_SET_L4_DST_PORT(char *arg, struct ofpbuf *ofpacts, |
2018 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2019 | { | |
2020 | return str_to_u16(arg, "destination port", | |
2021 | &ofpact_put_SET_L4_DST_PORT(ofpacts)->port); | |
2022 | } | |
d01c980f | 2023 | |
c2d936a4 BP |
2024 | static void |
2025 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, struct ds *s) | |
2026 | { | |
b1c5bf1f | 2027 | ds_put_format(s, "%smod_tp_src:%s%d", colors.param, colors.end, a->port); |
c2d936a4 | 2028 | } |
d01c980f | 2029 | |
c2d936a4 BP |
2030 | static void |
2031 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, struct ds *s) | |
2032 | { | |
b1c5bf1f | 2033 | ds_put_format(s, "%smod_tp_dst:%s%d", colors.param, colors.end, a->port); |
c2d936a4 BP |
2034 | } |
2035 | \f | |
73178f20 BP |
2036 | /* Action structure for OFPAT_COPY_FIELD. */ |
2037 | struct ofp15_action_copy_field { | |
2038 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2039 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2040 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2041 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2042 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2043 | uint8_t pad[2]; |
f13cdd73 BP |
2044 | /* Followed by: |
2045 | * - OXM header for source field. | |
2046 | * - OXM header for destination field. | |
2047 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2048 | * The "pad2" member is the beginning of the above. */ |
2049 | uint8_t pad2[4]; | |
73178f20 | 2050 | }; |
f13cdd73 | 2051 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2052 | |
914624f8 BP |
2053 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2054 | struct onf_action_copy_field { | |
2055 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2056 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2057 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2058 | ovs_be16 exp_type; /* 3200. */ | |
2059 | uint8_t pad[2]; /* Not used. */ | |
2060 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2061 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2062 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2063 | uint8_t pad2[2]; /* Not used. */ | |
2064 | /* Followed by: | |
2065 | * - OXM header for source field. | |
2066 | * - OXM header for destination field. | |
2067 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2068 | * The "pad3" member is the beginning of the above. */ | |
2069 | uint8_t pad3[4]; /* Not used. */ | |
2070 | }; | |
2071 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2072 | ||
c2d936a4 BP |
2073 | /* Action structure for NXAST_REG_MOVE. |
2074 | * | |
2075 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2076 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2077 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2078 | * the next most significant bit, and so on. | |
2079 | * | |
2080 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2081 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2082 | * matching; it uses the actual value of a field.) | |
2083 | * | |
2084 | * The following nxm_header values are potentially acceptable as 'src': | |
2085 | * | |
2086 | * - NXM_OF_IN_PORT | |
2087 | * - NXM_OF_ETH_DST | |
2088 | * - NXM_OF_ETH_SRC | |
2089 | * - NXM_OF_ETH_TYPE | |
2090 | * - NXM_OF_VLAN_TCI | |
2091 | * - NXM_OF_IP_TOS | |
2092 | * - NXM_OF_IP_PROTO | |
2093 | * - NXM_OF_IP_SRC | |
2094 | * - NXM_OF_IP_DST | |
2095 | * - NXM_OF_TCP_SRC | |
2096 | * - NXM_OF_TCP_DST | |
2097 | * - NXM_OF_UDP_SRC | |
2098 | * - NXM_OF_UDP_DST | |
2099 | * - NXM_OF_ICMP_TYPE | |
2100 | * - NXM_OF_ICMP_CODE | |
2101 | * - NXM_OF_ARP_OP | |
2102 | * - NXM_OF_ARP_SPA | |
2103 | * - NXM_OF_ARP_TPA | |
2104 | * - NXM_NX_TUN_ID | |
2105 | * - NXM_NX_ARP_SHA | |
2106 | * - NXM_NX_ARP_THA | |
2107 | * - NXM_NX_ICMPV6_TYPE | |
2108 | * - NXM_NX_ICMPV6_CODE | |
2109 | * - NXM_NX_ND_SLL | |
2110 | * - NXM_NX_ND_TLL | |
2111 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2112 | * - NXM_NX_PKT_MARK | |
2113 | * - NXM_NX_TUN_IPV4_SRC | |
2114 | * - NXM_NX_TUN_IPV4_DST | |
2115 | * | |
2116 | * The following nxm_header values are potentially acceptable as 'dst': | |
2117 | * | |
2118 | * - NXM_OF_ETH_DST | |
2119 | * - NXM_OF_ETH_SRC | |
2120 | * - NXM_OF_IP_TOS | |
2121 | * - NXM_OF_IP_SRC | |
2122 | * - NXM_OF_IP_DST | |
2123 | * - NXM_OF_TCP_SRC | |
2124 | * - NXM_OF_TCP_DST | |
2125 | * - NXM_OF_UDP_SRC | |
2126 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2127 | * - NXM_OF_ICMP_TYPE |
2128 | * - NXM_OF_ICMP_CODE | |
2129 | * - NXM_NX_ICMPV6_TYPE | |
2130 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2131 | * - NXM_NX_ARP_SHA |
2132 | * - NXM_NX_ARP_THA | |
2133 | * - NXM_OF_ARP_OP | |
2134 | * - NXM_OF_ARP_SPA | |
2135 | * - NXM_OF_ARP_TPA | |
2136 | * Modifying any of the above fields changes the corresponding packet | |
2137 | * header. | |
2138 | * | |
2139 | * - NXM_OF_IN_PORT | |
2140 | * | |
2141 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2142 | * | |
2143 | * - NXM_NX_PKT_MARK | |
2144 | * | |
2145 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2146 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2147 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2148 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2149 | * to the field's new value (with the CFI bit masked out). | |
2150 | * | |
2151 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2152 | * any of these values modifies the corresponding tunnel header field used | |
2153 | * for the packet's next tunnel encapsulation, if allowed by the | |
2154 | * configuration of the output tunnel port. | |
2155 | * | |
2156 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2157 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2158 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2159 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2160 | * | |
2161 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2162 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2163 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2164 | * | |
2165 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2166 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2167 | * temporary buffer copied to 'dst'. | |
2168 | */ | |
2169 | struct nx_action_reg_move { | |
2170 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2171 | ovs_be16 len; /* Length is 24. */ | |
2172 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2173 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2174 | ovs_be16 n_bits; /* Number of bits. */ | |
2175 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2176 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2177 | /* Followed by: |
2178 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2179 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2180 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2181 | }; |
bad8a439 | 2182 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2183 | |
73178f20 | 2184 | static enum ofperr |
914624f8 BP |
2185 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2186 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
2187 | struct ofpbuf *ofpacts) | |
73178f20 | 2188 | { |
0a2869d5 | 2189 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
914624f8 BP |
2190 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2191 | move->src.ofs = ntohs(src_offset); | |
2192 | move->src.n_bits = ntohs(n_bits); | |
2193 | move->dst.ofs = ntohs(dst_offset); | |
2194 | move->dst.n_bits = ntohs(n_bits); | |
2195 | ||
0a2869d5 | 2196 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2197 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 BP |
2198 | |
2199 | enum ofperr error = nx_pull_header(&b, &move->src.field, NULL); | |
f13cdd73 BP |
2200 | if (error) { |
2201 | return error; | |
2202 | } | |
2203 | error = nx_pull_header(&b, &move->dst.field, NULL); | |
2204 | if (error) { | |
2205 | return error; | |
2206 | } | |
f13cdd73 | 2207 | |
6fd6ed71 | 2208 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2209 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2210 | } | |
2211 | ||
73178f20 BP |
2212 | return nxm_reg_move_check(move, NULL); |
2213 | } | |
2214 | ||
914624f8 BP |
2215 | static enum ofperr |
2216 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2217 | enum ofp_version ofp_version OVS_UNUSED, |
914624f8 BP |
2218 | struct ofpbuf *ofpacts) |
2219 | { | |
2220 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2221 | oacf->n_bits, oacf, oacf->len, | |
2222 | OBJECT_OFFSETOF(oacf, pad2), ofpacts); | |
2223 | } | |
2224 | ||
2225 | static enum ofperr | |
2226 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2227 | enum ofp_version ofp_version OVS_UNUSED, |
914624f8 BP |
2228 | struct ofpbuf *ofpacts) |
2229 | { | |
2230 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2231 | oacf->n_bits, oacf, oacf->len, | |
2232 | OBJECT_OFFSETOF(oacf, pad3), ofpacts); | |
2233 | } | |
2234 | ||
c2d936a4 BP |
2235 | static enum ofperr |
2236 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2237 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
2238 | struct ofpbuf *ofpacts) |
2239 | { | |
0a2869d5 | 2240 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
914624f8 | 2241 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2242 | move->src.ofs = ntohs(narm->src_ofs); |
2243 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2244 | move->dst.ofs = ntohs(narm->dst_ofs); |
2245 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2246 | |
0a2869d5 | 2247 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2248 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 BP |
2249 | |
2250 | enum ofperr error = nx_pull_header(&b, &move->src.field, NULL); | |
bad8a439 BP |
2251 | if (error) { |
2252 | return error; | |
2253 | } | |
2254 | error = nx_pull_header(&b, &move->dst.field, NULL); | |
2255 | if (error) { | |
2256 | return error; | |
2257 | } | |
6fd6ed71 | 2258 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2259 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2260 | } | |
2261 | ||
c2d936a4 BP |
2262 | return nxm_reg_move_check(move, NULL); |
2263 | } | |
d01c980f | 2264 | |
c2d936a4 BP |
2265 | static void |
2266 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2267 | enum ofp_version ofp_version, struct ofpbuf *out) |
2268 | { | |
914624f8 BP |
2269 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2270 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2271 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2272 | * probe for support. Until we have that ability, we currently prefer | |
2273 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2274 | * versions. */ | |
6fd6ed71 | 2275 | size_t start_ofs = out->size; |
73178f20 | 2276 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2277 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2278 | copy->n_bits = htons(move->dst.n_bits); |
2279 | copy->src_offset = htons(move->src.ofs); | |
2280 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2281 | out->size = out->size - sizeof copy->pad2; |
f13cdd73 BP |
2282 | nx_put_header(out, move->src.field->id, ofp_version, false); |
2283 | nx_put_header(out, move->dst.field->id, ofp_version, false); | |
914624f8 BP |
2284 | } else if (ofp_version == OFP13_VERSION |
2285 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2286 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2287 | copy->n_bits = htons(move->dst.n_bits); | |
2288 | copy->src_offset = htons(move->src.ofs); | |
2289 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2290 | out->size = out->size - sizeof copy->pad3; |
914624f8 BP |
2291 | nx_put_header(out, move->src.field->id, ofp_version, false); |
2292 | nx_put_header(out, move->dst.field->id, ofp_version, false); | |
73178f20 | 2293 | } else { |
bad8a439 | 2294 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2295 | narm->n_bits = htons(move->dst.n_bits); |
2296 | narm->src_ofs = htons(move->src.ofs); | |
2297 | narm->dst_ofs = htons(move->dst.ofs); | |
bad8a439 BP |
2298 | nx_put_header(out, move->src.field->id, 0, false); |
2299 | nx_put_header(out, move->dst.field->id, 0, false); | |
73178f20 | 2300 | } |
bad8a439 | 2301 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2302 | } |
e9536ecb | 2303 | |
cab50449 | 2304 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2305 | parse_REG_MOVE(const char *arg, struct ofpbuf *ofpacts, |
2306 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2307 | { | |
2308 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); | |
2309 | const char *full_arg = arg; | |
2310 | char *error; | |
097d4939 | 2311 | |
c2d936a4 BP |
2312 | error = mf_parse_subfield__(&move->src, &arg); |
2313 | if (error) { | |
2314 | return error; | |
2315 | } | |
2316 | if (strncmp(arg, "->", 2)) { | |
2317 | return xasprintf("%s: missing `->' following source", full_arg); | |
2318 | } | |
2319 | arg += 2; | |
2320 | error = mf_parse_subfield(&move->dst, arg); | |
2321 | if (error) { | |
2322 | return error; | |
2323 | } | |
097d4939 | 2324 | |
c2d936a4 BP |
2325 | if (move->src.n_bits != move->dst.n_bits) { |
2326 | return xasprintf("%s: source field is %d bits wide but destination is " | |
2327 | "%d bits wide", full_arg, | |
2328 | move->src.n_bits, move->dst.n_bits); | |
2329 | } | |
2330 | return NULL; | |
2331 | } | |
0f3f3c3d | 2332 | |
c2d936a4 BP |
2333 | static void |
2334 | format_REG_MOVE(const struct ofpact_reg_move *a, struct ds *s) | |
2335 | { | |
2336 | nxm_format_reg_move(a, s); | |
2337 | } | |
2338 | \f | |
7eb4b1f1 BP |
2339 | /* Action structure for OFPAT12_SET_FIELD. */ |
2340 | struct ofp12_action_set_field { | |
2341 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2342 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2343 | ||
2344 | /* Followed by: | |
2345 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2346 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2347 | * | |
2348 | * The "pad" member is the beginning of the above. */ | |
2349 | uint8_t pad[4]; | |
2350 | }; | |
2351 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2352 | ||
c2d936a4 BP |
2353 | /* Action structure for NXAST_REG_LOAD. |
2354 | * | |
2355 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2356 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2357 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2358 | * bit, and so on. | |
2359 | * | |
2360 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2361 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2362 | * loading them. | |
2363 | * | |
2364 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2365 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2366 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2367 | * also stored as one less than its true value: | |
2368 | * | |
2369 | * 15 6 5 0 | |
2370 | * +------------------------------+------------------+ | |
2371 | * | ofs | n_bits - 1 | | |
2372 | * +------------------------------+------------------+ | |
2373 | * | |
2374 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2375 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2376 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2377 | * OFPBAC_BAD_ARGUMENT. | |
2378 | */ | |
2379 | struct nx_action_reg_load { | |
2380 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2381 | ovs_be16 len; /* Length is 24. */ | |
2382 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2383 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2384 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2385 | ovs_be32 dst; /* Destination register. */ | |
2386 | ovs_be64 value; /* Immediate value. */ | |
2387 | }; | |
2388 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2389 | |
bad8a439 BP |
2390 | /* Action structure for NXAST_REG_LOAD2. |
2391 | * | |
2392 | * Compared to OFPAT_SET_FIELD, we can use this to set whole or partial fields | |
2393 | * in any OpenFlow version. Compared to NXAST_REG_LOAD, we can use this to set | |
2394 | * OXM experimenter fields. */ | |
2395 | struct nx_action_reg_load2 { | |
2396 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2397 | ovs_be16 len; /* At least 16. */ | |
2398 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2399 | ovs_be16 subtype; /* NXAST_SET_FIELD. */ | |
2400 | ||
2401 | /* Followed by: | |
2402 | * - An NXM/OXM header, value, and optionally a mask. | |
2403 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2404 | * | |
2405 | * The "pad" member is the beginning of the above. */ | |
2406 | uint8_t pad[6]; | |
2407 | }; | |
2408 | OFP_ASSERT(sizeof(struct nx_action_reg_load2) == 16); | |
2409 | ||
c2d936a4 | 2410 | static enum ofperr |
7eb4b1f1 BP |
2411 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
2412 | bool may_mask, struct ofpbuf *ofpacts) | |
7fdb60a7 | 2413 | { |
0a2869d5 | 2414 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2415 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 BP |
2416 | |
2417 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
2418 | enum ofperr error = nx_pull_entry(&b, &sf->field, &sf->value, | |
2419 | may_mask ? &sf->mask : NULL); | |
178742f9 | 2420 | if (error) { |
178742f9 BP |
2421 | return (error == OFPERR_OFPBMC_BAD_MASK |
2422 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2423 | : error); | |
c2d936a4 | 2424 | } |
7eb4b1f1 BP |
2425 | if (!may_mask) { |
2426 | memset(&sf->mask, 0xff, sf->field->n_bytes); | |
2427 | } | |
178742f9 | 2428 | |
6fd6ed71 | 2429 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2430 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2431 | } | |
7fdb60a7 | 2432 | |
178742f9 BP |
2433 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2434 | * Set-Field. */ | |
2435 | if (sf->field->id == MFF_IN_PORT_OXM) { | |
2436 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
c2d936a4 | 2437 | } |
178742f9 | 2438 | |
c2d936a4 | 2439 | /* oxm_length is now validated to be compatible with mf_value. */ |
178742f9 BP |
2440 | if (!sf->field->writable) { |
2441 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
2442 | sf->field->name); | |
c2d936a4 BP |
2443 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2444 | } | |
c2d936a4 | 2445 | |
d3cb080e | 2446 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2447 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2448 | * a 1-bit in oxm_value and in oxm_mask." */ | |
178742f9 BP |
2449 | if (!mf_is_value_valid(sf->field, &sf->value) |
2450 | || (sf->field->id == MFF_VLAN_VID | |
31c9ed6c BP |
2451 | && (!(sf->mask.be16 & htons(OFPVID12_PRESENT)) |
2452 | || !(sf->value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2453 | struct ds ds = DS_EMPTY_INITIALIZER; |
178742f9 | 2454 | mf_format(sf->field, &sf->value, NULL, &ds); |
c2d936a4 | 2455 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
178742f9 | 2456 | sf->field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2457 | ds_destroy(&ds); |
2458 | ||
2459 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2460 | } |
c2d936a4 | 2461 | return 0; |
7fdb60a7 SH |
2462 | } |
2463 | ||
7eb4b1f1 BP |
2464 | static enum ofperr |
2465 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2466 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2467 | struct ofpbuf *ofpacts) |
2468 | { | |
2469 | return decode_ofpat_set_field(oasf, false, ofpacts); | |
2470 | } | |
2471 | ||
2472 | static enum ofperr | |
2473 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2474 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2475 | struct ofpbuf *ofpacts) |
2476 | { | |
2477 | return decode_ofpat_set_field(oasf, true, ofpacts); | |
2478 | } | |
2479 | ||
2480 | static enum ofperr | |
2481 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2482 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2483 | struct ofpbuf *out) |
2484 | { | |
2485 | struct ofpact_set_field *sf = ofpact_put_reg_load(out); | |
2486 | struct mf_subfield dst; | |
2487 | enum ofperr error; | |
2488 | ||
2489 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; | |
2490 | ||
2491 | dst.field = mf_from_nxm_header(ntohl(narl->dst)); | |
2492 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); | |
2493 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
2494 | error = mf_check_dst(&dst, NULL); | |
2495 | if (error) { | |
2496 | return error; | |
2497 | } | |
2498 | ||
2499 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2500 | * narl->value. */ | |
2501 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2502 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2503 | } | |
2504 | ||
2505 | sf->field = dst.field; | |
2506 | bitwise_put(ntohll(narl->value), | |
2507 | &sf->value, dst.field->n_bytes, dst.ofs, | |
2508 | dst.n_bits); | |
2509 | bitwise_put(UINT64_MAX, | |
2510 | &sf->mask, dst.field->n_bytes, dst.ofs, | |
2511 | dst.n_bits); | |
2512 | ||
2513 | return 0; | |
2514 | } | |
2515 | ||
bad8a439 BP |
2516 | static enum ofperr |
2517 | decode_NXAST_RAW_REG_LOAD2(const struct nx_action_reg_load2 *narl, | |
f3cd3ac7 | 2518 | enum ofp_version ofp_version OVS_UNUSED, |
bad8a439 BP |
2519 | struct ofpbuf *out) |
2520 | { | |
0a2869d5 | 2521 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(out); |
bad8a439 BP |
2522 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; |
2523 | ||
0a2869d5 | 2524 | struct ofpbuf b = ofpbuf_const_initializer(narl, ntohs(narl->len)); |
bad8a439 | 2525 | ofpbuf_pull(&b, OBJECT_OFFSETOF(narl, pad)); |
0a2869d5 BP |
2526 | |
2527 | enum ofperr error = nx_pull_entry(&b, &sf->field, &sf->value, &sf->mask); | |
bad8a439 BP |
2528 | if (error) { |
2529 | return error; | |
2530 | } | |
6fd6ed71 | 2531 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2532 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2533 | } | |
2534 | ||
2535 | if (!sf->field->writable) { | |
2536 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
2537 | sf->field->name); | |
2538 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
2539 | } | |
2540 | return 0; | |
2541 | } | |
2542 | ||
7fdb60a7 | 2543 | static void |
c2d936a4 | 2544 | ofpact_put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
178742f9 | 2545 | enum mf_field_id field, uint64_t value_) |
7fdb60a7 | 2546 | { |
7eb4b1f1 | 2547 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2548 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2549 | size_t start_ofs = openflow->size; |
178742f9 | 2550 | union mf_value value; |
7fdb60a7 | 2551 | |
178742f9 | 2552 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2553 | |
7eb4b1f1 | 2554 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2555 | openflow->size = openflow->size - sizeof oasf->pad; |
178742f9 BP |
2556 | nx_put_entry(openflow, field, ofp_version, &value, NULL); |
2557 | pad_ofpat(openflow, start_ofs); | |
7fdb60a7 SH |
2558 | } |
2559 | ||
7eb4b1f1 BP |
2560 | static bool |
2561 | next_load_segment(const struct ofpact_set_field *sf, | |
2562 | struct mf_subfield *dst, uint64_t *value) | |
2563 | { | |
fa078489 BP |
2564 | int n_bits = sf->field->n_bits; |
2565 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2566 | int start = dst->ofs + dst->n_bits; |
2567 | ||
fa078489 | 2568 | if (start < n_bits) { |
7eb4b1f1 | 2569 | dst->field = sf->field; |
fa078489 BP |
2570 | dst->ofs = bitwise_scan(&sf->mask, n_bytes, 1, start, n_bits); |
2571 | if (dst->ofs < n_bits) { | |
2572 | dst->n_bits = bitwise_scan(&sf->mask, n_bytes, 0, dst->ofs + 1, | |
2573 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; | |
2574 | *value = bitwise_get(&sf->value, n_bytes, dst->ofs, dst->n_bits); | |
7eb4b1f1 BP |
2575 | return true; |
2576 | } | |
2577 | } | |
2578 | return false; | |
2579 | } | |
178742f9 | 2580 | |
7eb4b1f1 | 2581 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2582 | static void |
c2d936a4 | 2583 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2584 | { |
bad8a439 | 2585 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2586 | * experimenter OXM or is variable length (or if it came in as |
2587 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2588 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2589 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2590 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
bad8a439 | 2591 | struct nx_action_reg_load2 *narl OVS_UNUSED; |
6fd6ed71 | 2592 | size_t start_ofs = openflow->size; |
bad8a439 BP |
2593 | |
2594 | narl = put_NXAST_REG_LOAD2(openflow); | |
6fd6ed71 | 2595 | openflow->size = openflow->size - sizeof narl->pad; |
bad8a439 BP |
2596 | nx_put_entry(openflow, sf->field->id, 0, &sf->value, &sf->mask); |
2597 | pad_ofpat(openflow, start_ofs); | |
2598 | } else { | |
2599 | struct mf_subfield dst; | |
2600 | uint64_t value; | |
7eb4b1f1 | 2601 | |
bad8a439 BP |
2602 | dst.ofs = dst.n_bits = 0; |
2603 | while (next_load_segment(sf, &dst, &value)) { | |
2604 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2605 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst.ofs, dst.n_bits); | |
2606 | narl->dst = htonl(mf_nxm_header(dst.field->id)); | |
2607 | narl->value = htonll(value); | |
2608 | } | |
7fdb60a7 SH |
2609 | } |
2610 | } | |
2611 | ||
7eb4b1f1 BP |
2612 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2613 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 2614 | * |
c2d936a4 BP |
2615 | * We check only meta-flow types that can appear within set field actions and |
2616 | * that have a mapping to compatible action types. These struct mf_field | |
2617 | * definitions have a defined OXM or NXM header value and specify the field as | |
2618 | * writable. */ | |
2619 | static void | |
2620 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
2621 | enum ofp_version ofp_version, | |
2622 | struct ofpbuf *out) | |
7fdb60a7 | 2623 | { |
c2d936a4 BP |
2624 | switch ((int) sf->field->id) { |
2625 | case MFF_VLAN_TCI: { | |
2626 | ovs_be16 tci = sf->value.be16; | |
2627 | bool cfi = (tci & htons(VLAN_CFI)) != 0; | |
2628 | uint16_t vid = vlan_tci_to_vid(tci); | |
2629 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
2630 | ||
2631 | if (ofp_version < OFP11_VERSION) { | |
2632 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
2633 | * | |
2634 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2635 | * If CFI=0, strip VLAN header, if any. | |
2636 | */ | |
2637 | if (cfi) { | |
2638 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2639 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
2640 | } else { | |
2641 | put_OFPAT10_STRIP_VLAN(out); | |
2642 | } | |
2643 | } else { | |
2644 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
2645 | * | |
2646 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2647 | * OpenFlow 1.1 set actions only apply if the packet | |
2648 | * already has VLAN tags. To be sure that is the case | |
2649 | * we have to push a VLAN header. As we do not support | |
2650 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
2651 | * header already exists. This may backfire, however, | |
2652 | * when we start supporting multiple layers of VLANs. | |
2653 | * If CFI=0, strip VLAN header, if any. | |
2654 | */ | |
2655 | if (cfi) { | |
2656 | /* Push a VLAN tag, if one was not seen at action validation | |
2657 | * time. */ | |
2658 | if (!sf->flow_has_vlan) { | |
2659 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
2660 | } | |
2661 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2662 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
2663 | } else { | |
2664 | /* If the flow did not match on vlan, we have no way of | |
2665 | * knowing if the vlan tag exists, so we must POP just to be | |
2666 | * sure. */ | |
2667 | put_OFPAT11_POP_VLAN(out); | |
2668 | } | |
2669 | } | |
2670 | break; | |
2671 | } | |
7fdb60a7 | 2672 | |
c2d936a4 BP |
2673 | case MFF_VLAN_VID: { |
2674 | uint16_t vid = ntohs(sf->value.be16) & VLAN_VID_MASK; | |
2675 | if (ofp_version == OFP10_VERSION) { | |
2676 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2677 | } else { | |
2678 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2679 | } | |
2680 | break; | |
2681 | } | |
2682 | ||
2683 | case MFF_VLAN_PCP: | |
2684 | if (ofp_version == OFP10_VERSION) { | |
2685 | put_OFPAT10_SET_VLAN_PCP(out, sf->value.u8); | |
2686 | } else { | |
2687 | put_OFPAT11_SET_VLAN_PCP(out, sf->value.u8); | |
2688 | } | |
2689 | break; | |
2690 | ||
2691 | case MFF_ETH_SRC: | |
74ff3298 | 2692 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value.mac; |
c2d936a4 BP |
2693 | break; |
2694 | ||
2695 | case MFF_ETH_DST: | |
74ff3298 | 2696 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value.mac; |
c2d936a4 BP |
2697 | break; |
2698 | ||
2699 | case MFF_IPV4_SRC: | |
2700 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value.be32); | |
2701 | break; | |
2702 | ||
2703 | case MFF_IPV4_DST: | |
2704 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value.be32); | |
2705 | break; | |
2706 | ||
2707 | case MFF_IP_DSCP: | |
2708 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value.u8); | |
2709 | break; | |
2710 | ||
2711 | case MFF_IP_DSCP_SHIFTED: | |
2712 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value.u8 << 2); | |
2713 | break; | |
2714 | ||
2715 | case MFF_TCP_SRC: | |
2716 | case MFF_UDP_SRC: | |
2717 | put_OFPAT_SET_TP_SRC(out, sf->value.be16); | |
2718 | break; | |
2719 | ||
2720 | case MFF_TCP_DST: | |
2721 | case MFF_UDP_DST: | |
2722 | put_OFPAT_SET_TP_DST(out, sf->value.be16); | |
2723 | break; | |
2724 | ||
2725 | default: | |
2726 | set_field_to_nxast(sf, out); | |
2727 | break; | |
7fdb60a7 SH |
2728 | } |
2729 | } | |
2730 | ||
7eb4b1f1 BP |
2731 | static void |
2732 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
2733 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2734 | { | |
2735 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 2736 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
2737 | |
2738 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 2739 | out->size = out->size - sizeof oasf->pad; |
7eb4b1f1 BP |
2740 | nx_put_entry(out, sf->field->id, ofp_version, &sf->value, &sf->mask); |
2741 | pad_ofpat(out, start_ofs); | |
2742 | } | |
2743 | ||
c2d936a4 BP |
2744 | static void |
2745 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
2746 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2747 | { | |
7eb4b1f1 | 2748 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
2749 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
2750 | * entirely). */ | |
7eb4b1f1 | 2751 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
2752 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
2753 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
2754 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
2755 | set_field_to_nxast(sf, out); |
2756 | } else if (ofp_version < OFP12_VERSION) { | |
2757 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 2758 | set_field_to_legacy_openflow(sf, ofp_version, out); |
7eb4b1f1 BP |
2759 | } else if (is_all_ones((const uint8_t *) &sf->mask, sf->field->n_bytes)) { |
2760 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an | |
2761 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
2762 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 2763 | } else { |
7eb4b1f1 BP |
2764 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
2765 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
2766 | * so encode it as reg_load. */ | |
2767 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
2768 | } |
2769 | } | |
2770 | ||
36b43aa6 JS |
2771 | /* Parses the input argument 'arg' into the key, value, and delimiter |
2772 | * components that are common across the reg_load and set_field action format. | |
2773 | * | |
2774 | * With an argument like "1->metadata", sets the following pointers to | |
2775 | * point within 'arg': | |
2776 | * key: "metadata" | |
2777 | * value: "1" | |
2778 | * delim: "->" | |
2779 | * | |
2780 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2781 | * error. The caller is responsible for freeing the returned string. */ | |
2782 | static char * OVS_WARN_UNUSED_RESULT | |
2783 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
2784 | { | |
2785 | char *value_end; | |
2786 | ||
2787 | *value = arg; | |
2788 | value_end = strstr(arg, "->"); | |
2789 | *key = value_end + strlen("->"); | |
2790 | if (delim) { | |
2791 | *delim = value_end; | |
2792 | } | |
2793 | ||
2794 | if (!value_end) { | |
2795 | return xasprintf("%s: missing `->'", arg); | |
2796 | } | |
2797 | if (strlen(value_end) <= strlen("->")) { | |
2798 | return xasprintf("%s: missing field name following `->'", arg); | |
2799 | } | |
2800 | ||
2801 | return NULL; | |
2802 | } | |
2803 | ||
c2d936a4 BP |
2804 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
2805 | * action to 'ofpacts'. | |
2806 | * | |
2807 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2808 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2809 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2810 | set_field_parse__(char *arg, struct ofpbuf *ofpacts, |
2811 | enum ofputil_protocol *usable_protocols) | |
7fdb60a7 | 2812 | { |
c2d936a4 BP |
2813 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); |
2814 | char *value; | |
2815 | char *delim; | |
2816 | char *key; | |
2817 | const struct mf_field *mf; | |
2818 | char *error; | |
7fdb60a7 | 2819 | |
36b43aa6 JS |
2820 | error = set_field_split_str(arg, &key, &value, &delim); |
2821 | if (error) { | |
2822 | return error; | |
c2d936a4 | 2823 | } |
e3f8f887 | 2824 | |
c2d936a4 BP |
2825 | mf = mf_from_name(key); |
2826 | if (!mf) { | |
2827 | return xasprintf("%s is not a valid OXM field name", key); | |
2828 | } | |
2829 | if (!mf->writable) { | |
2830 | return xasprintf("%s is read-only", key); | |
2831 | } | |
2832 | sf->field = mf; | |
2833 | delim[0] = '\0'; | |
7eb4b1f1 | 2834 | error = mf_parse(mf, value, &sf->value, &sf->mask); |
7fdb60a7 SH |
2835 | if (error) { |
2836 | return error; | |
2837 | } | |
2838 | ||
c2d936a4 BP |
2839 | if (!mf_is_value_valid(mf, &sf->value)) { |
2840 | return xasprintf("%s is not a valid value for field %s", value, key); | |
7fdb60a7 SH |
2841 | } |
2842 | ||
a4ce8b25 | 2843 | *usable_protocols &= mf->usable_protocols_exact; |
c2d936a4 | 2844 | return NULL; |
7fdb60a7 SH |
2845 | } |
2846 | ||
c2d936a4 BP |
2847 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
2848 | * action to 'ofpacts'. | |
2849 | * | |
2850 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2851 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2852 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2853 | parse_SET_FIELD(const char *arg, struct ofpbuf *ofpacts, |
2854 | enum ofputil_protocol *usable_protocols) | |
2855 | { | |
2856 | char *copy = xstrdup(arg); | |
2857 | char *error = set_field_parse__(copy, ofpacts, usable_protocols); | |
2858 | free(copy); | |
2859 | return error; | |
2860 | } | |
a359d5ad | 2861 | |
cab50449 | 2862 | static char * OVS_WARN_UNUSED_RESULT |
7eb4b1f1 BP |
2863 | parse_reg_load(char *arg, struct ofpbuf *ofpacts) |
2864 | { | |
2865 | struct ofpact_set_field *sf = ofpact_put_reg_load(ofpacts); | |
7eb4b1f1 | 2866 | struct mf_subfield dst; |
36b43aa6 | 2867 | char *key, *value_str; |
81270993 | 2868 | union mf_value value; |
7eb4b1f1 BP |
2869 | char *error; |
2870 | ||
36b43aa6 JS |
2871 | error = set_field_split_str(arg, &key, &value_str, NULL); |
2872 | if (error) { | |
2873 | return error; | |
7eb4b1f1 | 2874 | } |
36b43aa6 JS |
2875 | |
2876 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
2877 | if (error) { |
2878 | return error; | |
2879 | } | |
2880 | ||
81270993 JS |
2881 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
2882 | &key)) { | |
2883 | return xasprintf("%s: cannot parse integer value", arg); | |
2884 | } | |
2885 | ||
2886 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
2887 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
2888 | struct ds ds; | |
2889 | ||
2890 | ds_init(&ds); | |
2891 | mf_format(dst.field, &value, NULL, &ds); | |
2892 | error = xasprintf("%s: value %s does not fit into %d bits", | |
2893 | arg, ds_cstr(&ds), dst.n_bits); | |
2894 | ds_destroy(&ds); | |
2895 | return error; | |
7eb4b1f1 BP |
2896 | } |
2897 | ||
2898 | sf->field = dst.field; | |
2899 | memset(&sf->value, 0, sizeof sf->value); | |
81270993 JS |
2900 | bitwise_copy(&value, dst.field->n_bytes, 0, &sf->value, |
2901 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
2902 | bitwise_one(&sf->mask, dst.field->n_bytes, dst.ofs, dst.n_bits); | |
2903 | ||
7eb4b1f1 BP |
2904 | return NULL; |
2905 | } | |
2906 | ||
c2d936a4 BP |
2907 | static void |
2908 | format_SET_FIELD(const struct ofpact_set_field *a, struct ds *s) | |
2909 | { | |
7eb4b1f1 BP |
2910 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
2911 | struct mf_subfield dst; | |
2912 | uint64_t value; | |
2913 | ||
2914 | dst.ofs = dst.n_bits = 0; | |
2915 | while (next_load_segment(a, &dst, &value)) { | |
b1c5bf1f QM |
2916 | ds_put_format(s, "%sload:%s%#"PRIx64"%s->%s", |
2917 | colors.special, colors.end, value, | |
2918 | colors.special, colors.end); | |
7eb4b1f1 BP |
2919 | mf_format_subfield(&dst, s); |
2920 | ds_put_char(s, ','); | |
2921 | } | |
2922 | ds_chomp(s, ','); | |
2923 | } else { | |
b1c5bf1f | 2924 | ds_put_format(s, "%sset_field:%s", colors.special, colors.end); |
7eb4b1f1 | 2925 | mf_format(a->field, &a->value, &a->mask, s); |
b1c5bf1f QM |
2926 | ds_put_format(s, "%s->%s%s", |
2927 | colors.special, colors.end, a->field->name); | |
7eb4b1f1 BP |
2928 | } |
2929 | } | |
2930 | ||
2931 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact | |
2932 | * is marked such that, if possible, it will be translated to OpenFlow as | |
2933 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
2934 | * that was the way that the action was expressed when it came into OVS or for | |
2935 | * backward compatibility. */ | |
2936 | struct ofpact_set_field * | |
2937 | ofpact_put_reg_load(struct ofpbuf *ofpacts) | |
2938 | { | |
2939 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
2940 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; | |
2941 | return sf; | |
c2d936a4 BP |
2942 | } |
2943 | \f | |
2944 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
2945 | * | |
2946 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
2947 | * top of the stack. | |
2948 | */ | |
2949 | struct nx_action_stack { | |
2950 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2951 | ovs_be16 len; /* Length is 16. */ | |
2952 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2953 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
2954 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
2955 | /* Followed by: |
2956 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
2957 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
2958 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
2959 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 2960 | }; |
c2d936a4 | 2961 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 2962 | |
bad8a439 | 2963 | static enum ofperr |
c2d936a4 BP |
2964 | decode_stack_action(const struct nx_action_stack *nasp, |
2965 | struct ofpact_stack *stack_action) | |
a359d5ad | 2966 | { |
c2d936a4 | 2967 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 2968 | |
0a2869d5 | 2969 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 2970 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
0a2869d5 BP |
2971 | enum ofperr error = nx_pull_header(&b, &stack_action->subfield.field, |
2972 | NULL); | |
bad8a439 BP |
2973 | if (error) { |
2974 | return error; | |
2975 | } | |
6fd6ed71 | 2976 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 2977 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 2978 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2979 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2980 | } | |
2981 | ||
2982 | return 0; | |
a359d5ad IY |
2983 | } |
2984 | ||
c2d936a4 BP |
2985 | static enum ofperr |
2986 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 JS |
2987 | enum ofp_version ofp_version OVS_UNUSED, |
2988 | struct ofpbuf *ofpacts) | |
a359d5ad | 2989 | { |
c2d936a4 | 2990 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
bad8a439 BP |
2991 | enum ofperr error = decode_stack_action(nasp, push); |
2992 | return error ? error : nxm_stack_push_check(push, NULL); | |
a359d5ad IY |
2993 | } |
2994 | ||
c2d936a4 BP |
2995 | static enum ofperr |
2996 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 2997 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 2998 | struct ofpbuf *ofpacts) |
084c53de | 2999 | { |
c2d936a4 | 3000 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
bad8a439 BP |
3001 | enum ofperr error = decode_stack_action(nasp, pop); |
3002 | return error ? error : nxm_stack_pop_check(pop, NULL); | |
084c53de BP |
3003 | } |
3004 | ||
c2d936a4 BP |
3005 | static void |
3006 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3007 | struct nx_action_stack *nasp) | |
c0621c39 | 3008 | { |
bad8a439 BP |
3009 | struct ofpbuf b; |
3010 | ovs_be16 n_bits; | |
3011 | ||
c2d936a4 | 3012 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3013 | |
3014 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3015 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
3016 | nx_put_header(&b, stack_action->subfield.field->id, 0, false); | |
3017 | n_bits = htons(stack_action->subfield.n_bits); | |
3018 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3019 | } |
3020 | ||
c2d936a4 BP |
3021 | static void |
3022 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3023 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3024 | { | |
3025 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3026 | } | |
8e97815e | 3027 | |
c2d936a4 BP |
3028 | static void |
3029 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3030 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3031 | { |
c2d936a4 BP |
3032 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3033 | } | |
8e97815e | 3034 | |
cab50449 | 3035 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3036 | parse_STACK_PUSH(char *arg, struct ofpbuf *ofpacts, |
3037 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3038 | { | |
3039 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(ofpacts), arg); | |
3040 | } | |
8e97815e | 3041 | |
cab50449 | 3042 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3043 | parse_STACK_POP(char *arg, struct ofpbuf *ofpacts, |
3044 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3045 | { | |
3046 | return nxm_parse_stack_action(ofpact_put_STACK_POP(ofpacts), arg); | |
8e97815e BP |
3047 | } |
3048 | ||
c2d936a4 BP |
3049 | static void |
3050 | format_STACK_PUSH(const struct ofpact_stack *a, struct ds *s) | |
8e97815e | 3051 | { |
c2d936a4 BP |
3052 | nxm_format_stack_push(a, s); |
3053 | } | |
8e97815e | 3054 | |
c2d936a4 BP |
3055 | static void |
3056 | format_STACK_POP(const struct ofpact_stack *a, struct ds *s) | |
3057 | { | |
3058 | nxm_format_stack_pop(a, s); | |
3059 | } | |
3060 | \f | |
3061 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3062 | * | |
3063 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3064 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3065 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3066 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3067 | * | |
3068 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3069 | * sent only to controllers with id 0.) | |
3070 | */ | |
3071 | struct nx_action_cnt_ids { | |
3072 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3073 | ovs_be16 len; /* Length including slaves. */ | |
3074 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3075 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3076 | ||
3077 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3078 | uint8_t zeros[4]; /* Must be zero. */ | |
3079 | ||
3080 | /* Followed by 1 or more controller ids. | |
3081 | * | |
3082 | * uint16_t cnt_ids[]; // Controller ids. | |
3083 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3084 | */ | |
3085 | }; | |
3086 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3087 | ||
3088 | static enum ofperr | |
3089 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3090 | { | |
3091 | uint16_t id = 0; | |
3092 | struct ofpact_cnt_ids *ids; | |
3093 | enum ofperr error = 0; | |
3094 | ||
3095 | ids = ofpact_put_DEC_TTL(out); | |
3096 | ids->n_controllers = 1; | |
3097 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3098 | ids = out->header; |
ce058104 | 3099 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3100 | return error; |
3101 | } | |
3102 | ||
3103 | static enum ofperr | |
3104 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3105 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3106 | struct ofpbuf *out) |
3107 | { | |
3108 | struct ofpact_cnt_ids *ids; | |
3109 | size_t ids_size; | |
3110 | int i; | |
3111 | ||
3112 | ids = ofpact_put_DEC_TTL(out); | |
3113 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3114 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3115 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3116 | ||
3117 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3118 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3119 | } |
c2d936a4 BP |
3120 | |
3121 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3122 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3123 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
3124 | "are required for %"PRIu16" controllers.", | |
3125 | ids_size, ids->n_controllers * sizeof(ovs_be16), | |
3126 | ids->n_controllers); | |
3127 | return OFPERR_OFPBAC_BAD_LEN; | |
3128 | } | |
3129 | ||
3130 | for (i = 0; i < ids->n_controllers; i++) { | |
3131 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3132 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3133 | ids = out->header; |
c2d936a4 BP |
3134 | } |
3135 | ||
ce058104 | 3136 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3137 | |
3138 | return 0; | |
8e97815e BP |
3139 | } |
3140 | ||
c2d936a4 BP |
3141 | static void |
3142 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3143 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3144 | { |
c2d936a4 BP |
3145 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3146 | || dec_ttl->n_controllers != 1 | |
3147 | || dec_ttl->cnt_ids[0] != 0) { | |
3148 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3149 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3150 | ovs_be16 *ids; | |
3151 | size_t i; | |
8e97815e | 3152 | |
c2d936a4 BP |
3153 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3154 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3155 | ||
3156 | ids = ofpbuf_put_zeros(out, ids_len); | |
3157 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3158 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3159 | } |
c2d936a4 BP |
3160 | } else { |
3161 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3162 | } |
8e97815e BP |
3163 | } |
3164 | ||
c2d936a4 BP |
3165 | static void |
3166 | parse_noargs_dec_ttl(struct ofpbuf *ofpacts) | |
d01c980f | 3167 | { |
c2d936a4 BP |
3168 | struct ofpact_cnt_ids *ids; |
3169 | uint16_t id = 0; | |
3170 | ||
3171 | ofpact_put_DEC_TTL(ofpacts); | |
3172 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3173 | ids = ofpacts->header; |
c2d936a4 | 3174 | ids->n_controllers++; |
ce058104 | 3175 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
d01c980f BP |
3176 | } |
3177 | ||
cab50449 | 3178 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3179 | parse_DEC_TTL(char *arg, struct ofpbuf *ofpacts, |
3180 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
d01c980f | 3181 | { |
c2d936a4 BP |
3182 | if (*arg == '\0') { |
3183 | parse_noargs_dec_ttl(ofpacts); | |
3184 | } else { | |
3185 | struct ofpact_cnt_ids *ids; | |
3186 | char *cntr; | |
3187 | ||
3188 | ids = ofpact_put_DEC_TTL(ofpacts); | |
3189 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3190 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3191 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3192 | uint16_t id = atoi(cntr); | |
3193 | ||
3194 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3195 | ids = ofpacts->header; |
c2d936a4 BP |
3196 | ids->n_controllers++; |
3197 | } | |
3198 | if (!ids->n_controllers) { | |
3199 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3200 | "id."); | |
3201 | } | |
ce058104 | 3202 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
c2d936a4 BP |
3203 | } |
3204 | return NULL; | |
d01c980f BP |
3205 | } |
3206 | ||
c2d936a4 BP |
3207 | static void |
3208 | format_DEC_TTL(const struct ofpact_cnt_ids *a, struct ds *s) | |
d01c980f | 3209 | { |
c2d936a4 | 3210 | size_t i; |
d01c980f | 3211 | |
b1c5bf1f | 3212 | ds_put_format(s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3213 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
b1c5bf1f | 3214 | ds_put_format(s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3215 | for (i = 0; i < a->n_controllers; i++) { |
3216 | if (i) { | |
3217 | ds_put_cstr(s, ","); | |
d01c980f | 3218 | } |
c2d936a4 BP |
3219 | ds_put_format(s, "%"PRIu16, a->cnt_ids[i]); |
3220 | } | |
b1c5bf1f | 3221 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3222 | } |
3223 | } | |
c2d936a4 BP |
3224 | \f |
3225 | /* Set MPLS label actions. */ | |
d01c980f BP |
3226 | |
3227 | static enum ofperr | |
f3cd3ac7 JS |
3228 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3229 | enum ofp_version ofp_version OVS_UNUSED, | |
3230 | struct ofpbuf *out) | |
d01c980f | 3231 | { |
c2d936a4 BP |
3232 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3233 | return 0; | |
3234 | } | |
d01c980f | 3235 | |
c2d936a4 BP |
3236 | static void |
3237 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3238 | enum ofp_version ofp_version, | |
3239 | struct ofpbuf *out) | |
3240 | { | |
3241 | if (ofp_version < OFP12_VERSION) { | |
3242 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3243 | } else { | |
3244 | ofpact_put_set_field(out, ofp_version, MFF_MPLS_LABEL, | |
3245 | ntohl(label->label)); | |
d01c980f | 3246 | } |
c2d936a4 | 3247 | } |
d01c980f | 3248 | |
cab50449 | 3249 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3250 | parse_SET_MPLS_LABEL(char *arg, struct ofpbuf *ofpacts, |
3251 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3252 | { | |
3253 | struct ofpact_mpls_label *mpls_label = ofpact_put_SET_MPLS_LABEL(ofpacts); | |
3254 | if (*arg == '\0') { | |
3255 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3256 | } |
c2d936a4 BP |
3257 | |
3258 | mpls_label->label = htonl(atoi(arg)); | |
3259 | return NULL; | |
d01c980f BP |
3260 | } |
3261 | ||
3262 | static void | |
c2d936a4 | 3263 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, struct ds *s) |
d01c980f | 3264 | { |
b1c5bf1f QM |
3265 | ds_put_format(s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
3266 | colors.paren, colors.end, ntohl(a->label), | |
3267 | colors.paren, colors.end); | |
d01c980f | 3268 | } |
c2d936a4 BP |
3269 | \f |
3270 | /* Set MPLS TC actions. */ | |
d01c980f | 3271 | |
c2d936a4 | 3272 | static enum ofperr |
f3cd3ac7 JS |
3273 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3274 | enum ofp_version ofp_version OVS_UNUSED, | |
3275 | struct ofpbuf *out) | |
d01c980f | 3276 | { |
c2d936a4 BP |
3277 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3278 | return 0; | |
3279 | } | |
d01c980f | 3280 | |
c2d936a4 BP |
3281 | static void |
3282 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3283 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3284 | { | |
3285 | if (ofp_version < OFP12_VERSION) { | |
3286 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3287 | } else { | |
3288 | ofpact_put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); | |
8f2cded4 | 3289 | } |
c2d936a4 | 3290 | } |
8f2cded4 | 3291 | |
cab50449 | 3292 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3293 | parse_SET_MPLS_TC(char *arg, struct ofpbuf *ofpacts, |
3294 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3295 | { | |
3296 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(ofpacts); | |
d01c980f | 3297 | |
c2d936a4 BP |
3298 | if (*arg == '\0') { |
3299 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3300 | } |
3301 | ||
c2d936a4 BP |
3302 | mpls_tc->tc = atoi(arg); |
3303 | return NULL; | |
3304 | } | |
d01c980f | 3305 | |
c2d936a4 BP |
3306 | static void |
3307 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, struct ds *s) | |
3308 | { | |
b1c5bf1f QM |
3309 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3310 | colors.paren, colors.end, a->tc, | |
3311 | colors.paren, colors.end); | |
c2d936a4 BP |
3312 | } |
3313 | \f | |
3314 | /* Set MPLS TTL actions. */ | |
d01c980f | 3315 | |
c2d936a4 | 3316 | static enum ofperr |
f3cd3ac7 JS |
3317 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3318 | enum ofp_version ofp_version OVS_UNUSED, | |
3319 | struct ofpbuf *out) | |
c2d936a4 BP |
3320 | { |
3321 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3322 | return 0; | |
3323 | } | |
638a19b0 | 3324 | |
c2d936a4 BP |
3325 | static void |
3326 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3327 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3328 | { | |
3329 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3330 | } | |
638a19b0 | 3331 | |
c2d936a4 BP |
3332 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
3333 | * action to 'ofpacts'. | |
3334 | * | |
3335 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3336 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3337 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3338 | parse_SET_MPLS_TTL(char *arg, struct ofpbuf *ofpacts, |
3339 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3340 | { | |
3341 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(ofpacts); | |
d01c980f | 3342 | |
c2d936a4 BP |
3343 | if (*arg == '\0') { |
3344 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3345 | } |
7fdb60a7 | 3346 | |
c2d936a4 BP |
3347 | mpls_ttl->ttl = atoi(arg); |
3348 | return NULL; | |
3349 | } | |
4cceacb9 | 3350 | |
c2d936a4 BP |
3351 | static void |
3352 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, struct ds *s) | |
3353 | { | |
b1c5bf1f QM |
3354 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3355 | colors.paren, colors.end, a->ttl, | |
3356 | colors.paren, colors.end); | |
c2d936a4 BP |
3357 | } |
3358 | \f | |
3359 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3360 | |
c2d936a4 BP |
3361 | static enum ofperr |
3362 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3363 | { | |
3364 | ofpact_put_DEC_MPLS_TTL(out); | |
3365 | return 0; | |
3366 | } | |
8dd54666 | 3367 | |
c2d936a4 BP |
3368 | static void |
3369 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3370 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3371 | { | |
3372 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3373 | } | |
3374 | ||
cab50449 | 3375 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3376 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
3377 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3378 | { | |
3379 | ofpact_put_DEC_MPLS_TTL(ofpacts); | |
3380 | return NULL; | |
3381 | } | |
3382 | ||
3383 | static void | |
3384 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
3385 | { | |
b1c5bf1f | 3386 | ds_put_format(s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 BP |
3387 | } |
3388 | \f | |
3389 | /* Push MPLS label action. */ | |
3390 | ||
3391 | static enum ofperr | |
f3cd3ac7 JS |
3392 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3393 | enum ofp_version ofp_version OVS_UNUSED, | |
3394 | struct ofpbuf *out) | |
c2d936a4 BP |
3395 | { |
3396 | struct ofpact_push_mpls *oam; | |
3397 | ||
3398 | if (!eth_type_mpls(ethertype)) { | |
3399 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3400 | } |
c2d936a4 BP |
3401 | oam = ofpact_put_PUSH_MPLS(out); |
3402 | oam->ethertype = ethertype; | |
d01c980f | 3403 | |
c2d936a4 BP |
3404 | return 0; |
3405 | } | |
3406 | ||
3407 | static void | |
3408 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3409 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3410 | { | |
3411 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3412 | } | |
3413 | ||
cab50449 | 3414 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3415 | parse_PUSH_MPLS(char *arg, struct ofpbuf *ofpacts, |
3416 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3417 | { | |
3418 | uint16_t ethertype; | |
3419 | char *error; | |
3420 | ||
3421 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3422 | if (!error) { | |
3423 | ofpact_put_PUSH_MPLS(ofpacts)->ethertype = htons(ethertype); | |
d01c980f BP |
3424 | } |
3425 | return error; | |
3426 | } | |
c2d936a4 BP |
3427 | |
3428 | static void | |
3429 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, struct ds *s) | |
3430 | { | |
b1c5bf1f QM |
3431 | ds_put_format(s, "%spush_mpls:%s0x%04"PRIx16, |
3432 | colors.param, colors.end, ntohs(a->ethertype)); | |
c2d936a4 | 3433 | } |
d01c980f | 3434 | \f |
c2d936a4 BP |
3435 | /* Pop MPLS label action. */ |
3436 | ||
3437 | static enum ofperr | |
f3cd3ac7 JS |
3438 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3439 | enum ofp_version ofp_version OVS_UNUSED, | |
3440 | struct ofpbuf *out) | |
57ad4e9e | 3441 | { |
c2d936a4 BP |
3442 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3443 | return 0; | |
3444 | } | |
57ad4e9e | 3445 | |
c2d936a4 BP |
3446 | static void |
3447 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
3448 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3449 | { | |
3450 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
3451 | } | |
3452 | ||
cab50449 | 3453 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3454 | parse_POP_MPLS(char *arg, struct ofpbuf *ofpacts, |
3455 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3456 | { | |
3457 | uint16_t ethertype; | |
3458 | char *error; | |
3459 | ||
3460 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
3461 | if (!error) { | |
3462 | ofpact_put_POP_MPLS(ofpacts)->ethertype = htons(ethertype); | |
57ad4e9e | 3463 | } |
c2d936a4 | 3464 | return error; |
57ad4e9e BP |
3465 | } |
3466 | ||
ba2fe8e9 | 3467 | static void |
c2d936a4 | 3468 | format_POP_MPLS(const struct ofpact_pop_mpls *a, struct ds *s) |
ba2fe8e9 | 3469 | { |
b1c5bf1f QM |
3470 | ds_put_format(s, "%spop_mpls:%s0x%04"PRIx16, |
3471 | colors.param, colors.end, ntohs(a->ethertype)); | |
ba2fe8e9 | 3472 | } |
c2d936a4 BP |
3473 | \f |
3474 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 3475 | |
f25d0cf3 | 3476 | static enum ofperr |
f3cd3ac7 JS |
3477 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
3478 | enum ofp_version ofp_version OVS_UNUSED, | |
3479 | struct ofpbuf *out) | |
f25d0cf3 | 3480 | { |
c2d936a4 BP |
3481 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
3482 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
3483 | tunnel->tun_id = tun_id; | |
3484 | return 0; | |
3485 | } | |
f25d0cf3 | 3486 | |
c2d936a4 | 3487 | static enum ofperr |
f3cd3ac7 JS |
3488 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
3489 | enum ofp_version ofp_version OVS_UNUSED, | |
3490 | struct ofpbuf *out) | |
c2d936a4 BP |
3491 | { |
3492 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
3493 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
3494 | tunnel->tun_id = tun_id; | |
3495 | return 0; | |
3496 | } | |
f25d0cf3 | 3497 | |
c2d936a4 BP |
3498 | static void |
3499 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
3500 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3501 | { | |
3502 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 3503 | |
c2d936a4 BP |
3504 | if (ofp_version < OFP12_VERSION) { |
3505 | if (tun_id <= UINT32_MAX | |
3506 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
3507 | put_NXAST_SET_TUNNEL(out, tun_id); | |
3508 | } else { | |
3509 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 3510 | } |
c2d936a4 BP |
3511 | } else { |
3512 | ofpact_put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); | |
3513 | } | |
3514 | } | |
f25d0cf3 | 3515 | |
cab50449 | 3516 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3517 | parse_set_tunnel(char *arg, struct ofpbuf *ofpacts, |
3518 | enum ofp_raw_action_type raw) | |
3519 | { | |
3520 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 3521 | |
c2d936a4 BP |
3522 | tunnel = ofpact_put_SET_TUNNEL(ofpacts); |
3523 | tunnel->ofpact.raw = raw; | |
3524 | return str_to_u64(arg, &tunnel->tun_id); | |
3525 | } | |
8621547c | 3526 | |
cab50449 | 3527 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3528 | parse_SET_TUNNEL(char *arg, struct ofpbuf *ofpacts, |
3529 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3530 | { | |
3531 | return parse_set_tunnel(arg, ofpacts, NXAST_RAW_SET_TUNNEL); | |
3532 | } | |
8621547c | 3533 | |
c2d936a4 BP |
3534 | static void |
3535 | format_SET_TUNNEL(const struct ofpact_tunnel *a, struct ds *s) | |
3536 | { | |
b1c5bf1f | 3537 | ds_put_format(s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
3538 | (a->tun_id > UINT32_MAX |
3539 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 3540 | colors.end, a->tun_id); |
c2d936a4 BP |
3541 | } |
3542 | \f | |
3543 | /* Set queue action. */ | |
8621547c | 3544 | |
c2d936a4 | 3545 | static enum ofperr |
f3cd3ac7 JS |
3546 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
3547 | enum ofp_version ofp_version OVS_UNUSED, | |
3548 | struct ofpbuf *out) | |
c2d936a4 BP |
3549 | { |
3550 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
3551 | return 0; | |
3552 | } | |
8621547c | 3553 | |
c2d936a4 BP |
3554 | static void |
3555 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
3556 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3557 | { | |
3558 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
3559 | } | |
8621547c | 3560 | |
cab50449 | 3561 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3562 | parse_SET_QUEUE(char *arg, struct ofpbuf *ofpacts, |
3563 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3564 | { | |
3565 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(ofpacts)->queue_id); | |
3566 | } | |
8621547c | 3567 | |
c2d936a4 BP |
3568 | static void |
3569 | format_SET_QUEUE(const struct ofpact_queue *a, struct ds *s) | |
3570 | { | |
b1c5bf1f QM |
3571 | ds_put_format(s, "%sset_queue:%s%"PRIu32, |
3572 | colors.param, colors.end, a->queue_id); | |
c2d936a4 BP |
3573 | } |
3574 | \f | |
3575 | /* Pop queue action. */ | |
1e7db674 | 3576 | |
c2d936a4 BP |
3577 | static enum ofperr |
3578 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
3579 | { | |
3580 | ofpact_put_POP_QUEUE(out); | |
3581 | return 0; | |
3582 | } | |
f25d0cf3 | 3583 | |
c2d936a4 BP |
3584 | static void |
3585 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
3586 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3587 | { | |
3588 | put_NXAST_POP_QUEUE(out); | |
3589 | } | |
f25d0cf3 | 3590 | |
cab50449 | 3591 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3592 | parse_POP_QUEUE(const char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
3593 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3594 | { | |
3595 | ofpact_put_POP_QUEUE(ofpacts); | |
3596 | return NULL; | |
3597 | } | |
f25d0cf3 | 3598 | |
c2d936a4 BP |
3599 | static void |
3600 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
3601 | { | |
b1c5bf1f | 3602 | ds_put_format(s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 BP |
3603 | } |
3604 | \f | |
3605 | /* Action structure for NXAST_FIN_TIMEOUT. | |
3606 | * | |
3607 | * This action changes the idle timeout or hard timeout, or both, of this | |
3608 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
3609 | * When such a packet is observed, the action reduces the rule's idle timeout | |
3610 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
3611 | * action has no effect on an existing timeout that is already shorter than the | |
3612 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
3613 | * of zero has no effect on the respective timeout. | |
3614 | * | |
3615 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
3616 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
3617 | * receipt of the FIN or RST. | |
3618 | * | |
3619 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
3620 | * take a long time to expire. | |
3621 | * | |
3622 | * This action is intended for use with an OpenFlow rule that matches only a | |
3623 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
3624 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
3625 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
3626 | * early, which is not normally desirable. | |
3627 | */ | |
3628 | struct nx_action_fin_timeout { | |
3629 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3630 | ovs_be16 len; /* 16. */ | |
3631 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3632 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
3633 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
3634 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
3635 | ovs_be16 pad; /* Must be zero. */ | |
3636 | }; | |
3637 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 3638 | |
c2d936a4 BP |
3639 | static enum ofperr |
3640 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 3641 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3642 | struct ofpbuf *out) |
3643 | { | |
3644 | struct ofpact_fin_timeout *oft; | |
8621547c | 3645 | |
c2d936a4 BP |
3646 | oft = ofpact_put_FIN_TIMEOUT(out); |
3647 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
3648 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
3649 | return 0; | |
3650 | } | |
f25d0cf3 | 3651 | |
c2d936a4 BP |
3652 | static void |
3653 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
3654 | enum ofp_version ofp_version OVS_UNUSED, | |
3655 | struct ofpbuf *out) | |
3656 | { | |
3657 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
3658 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
3659 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
3660 | } | |
f25d0cf3 | 3661 | |
cab50449 | 3662 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3663 | parse_FIN_TIMEOUT(char *arg, struct ofpbuf *ofpacts, |
3664 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3665 | { | |
3666 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(ofpacts); | |
3667 | char *key, *value; | |
f25d0cf3 | 3668 | |
c2d936a4 BP |
3669 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
3670 | char *error; | |
b02475c5 | 3671 | |
c2d936a4 BP |
3672 | if (!strcmp(key, "idle_timeout")) { |
3673 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
3674 | } else if (!strcmp(key, "hard_timeout")) { | |
3675 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
3676 | } else { | |
3677 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
3678 | key); | |
8621547c | 3679 | } |
8dd54666 | 3680 | |
c2d936a4 BP |
3681 | if (error) { |
3682 | return error; | |
9cae45dc | 3683 | } |
9cae45dc | 3684 | } |
c2d936a4 BP |
3685 | return NULL; |
3686 | } | |
e3b56933 | 3687 | |
c2d936a4 BP |
3688 | static void |
3689 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, struct ds *s) | |
3690 | { | |
b1c5bf1f | 3691 | ds_put_format(s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 3692 | if (a->fin_idle_timeout) { |
b1c5bf1f QM |
3693 | ds_put_format(s, "%sidle_timeout=%s%"PRIu16",", |
3694 | colors.param, colors.end, a->fin_idle_timeout); | |
7e9f8266 | 3695 | } |
c2d936a4 | 3696 | if (a->fin_hard_timeout) { |
b1c5bf1f QM |
3697 | ds_put_format(s, "%shard_timeout=%s%"PRIu16",", |
3698 | colors.param, colors.end, a->fin_hard_timeout); | |
f25d0cf3 | 3699 | } |
c2d936a4 | 3700 | ds_chomp(s, ','); |
b1c5bf1f | 3701 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
f25d0cf3 | 3702 | } |
c2d936a4 BP |
3703 | \f |
3704 | /* Action structures for NXAST_RESUBMIT and NXAST_RESUBMIT_TABLE. | |
eca39bce | 3705 | * |
c2d936a4 | 3706 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 3707 | * |
c2d936a4 BP |
3708 | * - For NXAST_RESUBMIT_TABLE only, if the 'table' member is not 255, then |
3709 | * it specifies the table to search. | |
ca287d20 | 3710 | * |
c2d936a4 BP |
3711 | * - Otherwise (for NXAST_RESUBMIT_TABLE with a 'table' of 255, or for |
3712 | * NXAST_RESUBMIT regardless of 'table'), it searches the current flow | |
3713 | * table, that is, the OpenFlow flow table that contains the flow from | |
3714 | * which this action was obtained. If this action did not come from a | |
3715 | * flow table (e.g. it came from an OFPT_PACKET_OUT message), then table 0 | |
3716 | * is the current table. | |
3717 | * | |
3718 | * The flow table lookup uses a flow that may be slightly modified from the | |
3719 | * original lookup: | |
3720 | * | |
3721 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
3722 | * is used as the flow's in_port. | |
3723 | * | |
3724 | * - For NXAST_RESUBMIT_TABLE, if the 'in_port' member is not OFPP_IN_PORT, | |
3725 | * then its value is used as the flow's in_port. Otherwise, the original | |
3726 | * in_port is used. | |
3727 | * | |
3728 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
3729 | * resubmit action, then the flow is updated with the new values. | |
3730 | * | |
3731 | * Following the lookup, the original in_port is restored. | |
3732 | * | |
3733 | * If the modified flow matched in the flow table, then the corresponding | |
3734 | * actions are executed. Afterward, actions following the resubmit in the | |
3735 | * original set of actions, if any, are executed; any changes made to the | |
3736 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
3737 | * actions are executed, although the original in_port is restored. | |
3738 | * | |
3739 | * Resubmit actions may be used any number of times within a set of actions. | |
3740 | * | |
3741 | * Resubmit actions may nest to an implementation-defined depth. Beyond this | |
3742 | * implementation-defined depth, further resubmit actions are simply ignored. | |
3743 | * | |
3744 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE requires | |
3745 | * 'pad' to be all-bits-zero. | |
3746 | * | |
3747 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
3748 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. | |
3749 | */ | |
3750 | struct nx_action_resubmit { | |
3751 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3752 | ovs_be16 len; /* Length is 16. */ | |
3753 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3754 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
3755 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
3756 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
3757 | uint8_t pad[3]; | |
3758 | }; | |
3759 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
3760 | ||
3761 | static enum ofperr | |
f3cd3ac7 JS |
3762 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
3763 | enum ofp_version ofp_version OVS_UNUSED, | |
3764 | struct ofpbuf *out) | |
f25d0cf3 | 3765 | { |
c2d936a4 | 3766 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 3767 | |
c2d936a4 BP |
3768 | resubmit = ofpact_put_RESUBMIT(out); |
3769 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
3770 | resubmit->in_port = u16_to_ofp(port); | |
3771 | resubmit->table_id = 0xff; | |
3772 | return 0; | |
f25d0cf3 | 3773 | } |
4cceacb9 | 3774 | |
c2d936a4 BP |
3775 | static enum ofperr |
3776 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 3777 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 3778 | struct ofpbuf *out) |
ba2fe8e9 | 3779 | { |
c2d936a4 | 3780 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 3781 | |
c2d936a4 BP |
3782 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
3783 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
3784 | } | |
3785 | ||
3786 | resubmit = ofpact_put_RESUBMIT(out); | |
3787 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
3788 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
3789 | resubmit->table_id = nar->table; | |
3790 | return 0; | |
ba2fe8e9 BP |
3791 | } |
3792 | ||
c2d936a4 BP |
3793 | static void |
3794 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
3795 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 3796 | { |
c2d936a4 | 3797 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 3798 | |
c2d936a4 BP |
3799 | if (resubmit->table_id == 0xff |
3800 | && resubmit->ofpact.raw != NXAST_RAW_RESUBMIT_TABLE) { | |
3801 | put_NXAST_RESUBMIT(out, in_port); | |
3802 | } else { | |
3803 | struct nx_action_resubmit *nar = put_NXAST_RESUBMIT_TABLE(out); | |
3804 | nar->table = resubmit->table_id; | |
3805 | nar->in_port = htons(in_port); | |
3806 | } | |
3807 | } | |
6813ee7c | 3808 | |
cab50449 | 3809 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3810 | parse_RESUBMIT(char *arg, struct ofpbuf *ofpacts, |
3811 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3812 | { | |
3813 | struct ofpact_resubmit *resubmit; | |
3814 | char *in_port_s, *table_s; | |
6813ee7c | 3815 | |
c2d936a4 | 3816 | resubmit = ofpact_put_RESUBMIT(ofpacts); |
8f2cded4 | 3817 | |
c2d936a4 BP |
3818 | in_port_s = strsep(&arg, ","); |
3819 | if (in_port_s && in_port_s[0]) { | |
3820 | if (!ofputil_port_from_string(in_port_s, &resubmit->in_port)) { | |
3821 | return xasprintf("%s: resubmit to unknown port", in_port_s); | |
8f2cded4 | 3822 | } |
c2d936a4 BP |
3823 | } else { |
3824 | resubmit->in_port = OFPP_IN_PORT; | |
3825 | } | |
4cceacb9 | 3826 | |
c2d936a4 BP |
3827 | table_s = strsep(&arg, ","); |
3828 | if (table_s && table_s[0]) { | |
3829 | uint32_t table_id = 0; | |
3830 | char *error; | |
3831 | ||
3832 | error = str_to_u32(table_s, &table_id); | |
3833 | if (error) { | |
3834 | return error; | |
3835 | } | |
3836 | resubmit->table_id = table_id; | |
3837 | } else { | |
3838 | resubmit->table_id = 255; | |
4cceacb9 JS |
3839 | } |
3840 | ||
c2d936a4 BP |
3841 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
3842 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
3843 | "specified on resubmit"); | |
3844 | } | |
3845 | return NULL; | |
3846 | } | |
3847 | ||
3848 | static void | |
3849 | format_RESUBMIT(const struct ofpact_resubmit *a, struct ds *s) | |
3850 | { | |
3851 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
b1c5bf1f | 3852 | ds_put_format(s, "%sresubmit:%s", colors.special, colors.end); |
c2d936a4 BP |
3853 | ofputil_format_port(a->in_port, s); |
3854 | } else { | |
b1c5bf1f | 3855 | ds_put_format(s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 BP |
3856 | if (a->in_port != OFPP_IN_PORT) { |
3857 | ofputil_format_port(a->in_port, s); | |
3858 | } | |
3859 | ds_put_char(s, ','); | |
3860 | if (a->table_id != 255) { | |
3861 | ds_put_format(s, "%"PRIu8, a->table_id); | |
3862 | } | |
b1c5bf1f | 3863 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
3864 | } |
3865 | } | |
3866 | \f | |
3867 | /* Action structure for NXAST_LEARN. | |
3868 | * | |
3869 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
3870 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
3871 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
3872 | * flow's match criteria and actions are built by applying each of the series | |
3873 | * of flow_mod_spec elements included as part of the action. | |
3874 | * | |
3875 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
3876 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
3877 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
3878 | * bits from a source to a destination. In this case, the header contains | |
3879 | * multiple fields: | |
3880 | * | |
3881 | * 15 14 13 12 11 10 0 | |
3882 | * +------+---+------+---------------------------------+ | |
3883 | * | 0 |src| dst | n_bits | | |
3884 | * +------+---+------+---------------------------------+ | |
3885 | * | |
3886 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
3887 | * following table summarizes the meaning of each possible combination. | |
3888 | * Details follow the table: | |
3889 | * | |
3890 | * src dst meaning | |
3891 | * --- --- ---------------------------------------------------------- | |
3892 | * 0 0 Add match criteria based on value in a field. | |
3893 | * 1 0 Add match criteria based on an immediate value. | |
3894 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
3895 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
3896 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
3897 | * All other combinations are undefined and not allowed. | |
3898 | * | |
3899 | * The flow_mod_spec header is followed by a source specification and a | |
3900 | * destination specification. The format and meaning of the source | |
3901 | * specification depends on 'src': | |
3902 | * | |
3903 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
3904 | * which this action is attached. (This should be a wildcarded field. If | |
3905 | * its value is fully specified then the source bits being copied have | |
3906 | * constant values.) | |
3907 | * | |
3908 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
3909 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
3910 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
3911 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
3912 | * field in NXAST_REG_MOVE. | |
3913 | * | |
3914 | * - If 'src' is 1, the source bits are a constant value. The source | |
3915 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
3916 | * number in network order, the source bits are the 'n_bits' | |
3917 | * least-significant bits. The switch will report an error if other bits | |
3918 | * in the constant are nonzero. | |
3919 | * | |
3920 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
3921 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
3922 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
3923 | * meaning of the flow_mod_spec depends on 'dst': | |
3924 | * | |
3925 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
3926 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
3927 | * packet equal the source bits. 'field' may be any nxm_header with | |
3928 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
3929 | * | |
3930 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
3931 | * prerequisites for matching fields specified later, by copying constant | |
3932 | * values into prerequisite fields. | |
3933 | * | |
3934 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
3935 | * restrictions. | |
3936 | * | |
3937 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
3938 | * the new flow. The new flow copies the source bits into | |
3939 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
3940 | * flow_mod_specs. | |
3941 | * | |
3942 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
3943 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
3944 | * | |
3945 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
3946 | * empty. It has the following meaning: | |
3947 | * | |
3948 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
3949 | * The new flow outputs to the OpenFlow port specified by the source field. | |
3950 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
3951 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
3952 | * may not be used. | |
3953 | * | |
3954 | * Resource Management | |
3955 | * ------------------- | |
3956 | * | |
3957 | * A switch has a finite amount of flow table space available for learning. | |
3958 | * When this space is exhausted, no new learning table entries will be learned | |
3959 | * until some existing flow table entries expire. The controller should be | |
3960 | * prepared to handle this by flooding (which can be implemented as a | |
3961 | * low-priority flow). | |
3962 | * | |
3963 | * If a learned flow matches a single TCP stream with a relatively long | |
3964 | * timeout, one may make the best of resource constraints by setting | |
3965 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
3966 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
3967 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
3968 | * the learned flow. | |
3969 | * | |
3970 | * Examples | |
3971 | * -------- | |
3972 | * | |
3973 | * The following examples give a prose description of the flow_mod_specs along | |
3974 | * with informal notation for how those would be represented and a hex dump of | |
3975 | * the bytes that would be required. | |
3976 | * | |
3977 | * These examples could work with various nx_action_learn parameters. Typical | |
3978 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
3979 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
3980 | * | |
3981 | * 1. Learn input port based on the source MAC, with lookup into | |
3982 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
3983 | * | |
3984 | * Match on in_port=99: | |
3985 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
3986 | * ovs_be16(99), 00 63 | |
3987 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
3988 | * | |
3989 | * Match Ethernet destination on Ethernet source from packet: | |
3990 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
3991 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
3992 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
3993 | * | |
3994 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
3995 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
3996 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
3997 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
3998 | * | |
3999 | * Given a packet that arrived on port A with Ethernet source address B, | |
4000 | * this would set up the flow "in_port=99, dl_dst=B, | |
4001 | * actions=load:A->NXM_NX_REG1[16..31]". | |
4002 | * | |
4003 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
4004 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4005 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
4006 | * | |
4007 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
4008 | * into NXM_NX_REG1[16:31]: | |
4009 | * | |
4010 | * Match on same VLAN ID as packet: | |
4011 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
4012 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4013 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4014 | * | |
4015 | * Match Ethernet destination on Ethernet source from packet: | |
4016 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4017 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4018 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4019 | * | |
4020 | * Output to the packet's input port: | |
4021 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
4022 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4023 | * | |
4024 | * Given a packet that arrived on port A with Ethernet source address B in | |
4025 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
4026 | * actions=output:A". | |
4027 | * | |
4028 | * In syntax accepted by ovs-ofctl, this action is: | |
4029 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4030 | * output:NXM_OF_IN_PORT[]) | |
4031 | * | |
4032 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
4033 | * 10-second MAC expiration time to make it easier to see what's going on | |
4034 | * | |
4035 | * ovs-vsctl del-controller br0 | |
4036 | * ovs-ofctl del-flows br0 | |
4037 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
4038 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
4039 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
4040 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
4041 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
4042 | * | |
4043 | * You can then dump the MAC learning table with: | |
4044 | * | |
4045 | * ovs-ofctl dump-flows br0 table=1 | |
4046 | * | |
4047 | * Usage Advice | |
4048 | * ------------ | |
4049 | * | |
4050 | * For best performance, segregate learned flows into a table that is not used | |
4051 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
4052 | * (a flow with no match criteria). If different learning actions specify | |
4053 | * different match criteria, use different tables for the learned flows. | |
4054 | * | |
4055 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
4056 | * These timeouts apply to the flow that is added, which means that a flow with | |
4057 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
4058 | * address. This is not usually the intent in MAC learning; instead, we want | |
4059 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
4060 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
4061 | * |
4062 | * | |
4063 | * Visibility of Changes | |
4064 | * --------------------- | |
4065 | * | |
4066 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
4067 | * flow translation are visible to flow table lookups made later in the flow | |
4068 | * translation. This means that, in the example above, a MAC learned by the | |
4069 | * learn action in table 0 would be found in table 1 (if the packet being | |
4070 | * processed had the same source and destination MAC address). | |
4071 | * | |
4072 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
4073 | * modify a flow) by a "learn" action are visible only for later flow | |
4074 | * translations, not for later lookups within the same flow translation. In | |
4075 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
4076 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
4077 | * after the processing of the learn action, meaning that if this MAC had not | |
4078 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
4079 | struct nx_action_learn { |
4080 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4081 | ovs_be16 len; /* At least 24. */ | |
4082 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4083 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
4084 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
4085 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
4086 | ovs_be16 priority; /* Priority level of flow entry. */ | |
4087 | ovs_be64 cookie; /* Cookie for new flow. */ | |
4088 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
4089 | uint8_t table_id; /* Table to insert flow entry. */ | |
4090 | uint8_t pad; /* Must be zero. */ | |
4091 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
4092 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
4093 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
4094 | * until the end of the action is reached. */ | |
4095 | }; | |
4096 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
4097 | ||
4098 | static ovs_be16 | |
4099 | get_be16(const void **pp) | |
4100 | { | |
4101 | const ovs_be16 *p = *pp; | |
4102 | ovs_be16 value = *p; | |
4103 | *pp = p + 1; | |
4104 | return value; | |
4105 | } | |
4106 | ||
4107 | static ovs_be32 | |
4108 | get_be32(const void **pp) | |
4109 | { | |
4110 | const ovs_be32 *p = *pp; | |
4111 | ovs_be32 value = get_unaligned_be32(p); | |
4112 | *pp = p + 1; | |
4113 | return value; | |
4114 | } | |
4115 | ||
4116 | static void | |
4117 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf) | |
4118 | { | |
4119 | sf->field = mf_from_nxm_header(ntohl(get_be32(p))); | |
4120 | sf->ofs = ntohs(get_be16(p)); | |
4121 | sf->n_bits = n_bits; | |
4122 | } | |
4123 | ||
4124 | static unsigned int | |
4125 | learn_min_len(uint16_t header) | |
4126 | { | |
4127 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
4128 | int src_type = header & NX_LEARN_SRC_MASK; | |
4129 | int dst_type = header & NX_LEARN_DST_MASK; | |
4130 | unsigned int min_len; | |
4131 | ||
4132 | min_len = 0; | |
4133 | if (src_type == NX_LEARN_SRC_FIELD) { | |
4134 | min_len += sizeof(ovs_be32); /* src_field */ | |
4135 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
4136 | } else { | |
4137 | min_len += DIV_ROUND_UP(n_bits, 16); | |
4138 | } | |
4139 | if (dst_type == NX_LEARN_DST_MATCH || | |
4140 | dst_type == NX_LEARN_DST_LOAD) { | |
4141 | min_len += sizeof(ovs_be32); /* dst_field */ | |
4142 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
4143 | } | |
4144 | return min_len; | |
4145 | } | |
4146 | ||
4147 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to | |
4148 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4149 | static enum ofperr | |
4150 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
f3cd3ac7 | 4151 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4152 | struct ofpbuf *ofpacts) |
4153 | { | |
4154 | struct ofpact_learn *learn; | |
4155 | const void *p, *end; | |
4156 | ||
4157 | if (nal->pad) { | |
4158 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4159 | } | |
4160 | ||
4161 | learn = ofpact_put_LEARN(ofpacts); | |
4162 | ||
4163 | learn->idle_timeout = ntohs(nal->idle_timeout); | |
4164 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
4165 | learn->priority = ntohs(nal->priority); | |
4166 | learn->cookie = nal->cookie; | |
4167 | learn->table_id = nal->table_id; | |
4168 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
4169 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
4170 | ||
4171 | learn->flags = ntohs(nal->flags); | |
4172 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4173 | NX_LEARN_F_DELETE_LEARNED)) { | |
4174 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4175 | } | |
4176 | ||
4177 | if (learn->table_id == 0xff) { | |
4178 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4179 | } | |
4180 | ||
4181 | end = (char *) nal + ntohs(nal->len); | |
4182 | for (p = nal + 1; p != end; ) { | |
4183 | struct ofpact_learn_spec *spec; | |
4184 | uint16_t header = ntohs(get_be16(&p)); | |
4185 | ||
4186 | if (!header) { | |
4187 | break; | |
4188 | } | |
4189 | ||
4190 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 4191 | learn = ofpacts->header; |
c2d936a4 BP |
4192 | learn->n_specs++; |
4193 | ||
4194 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
4195 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
4196 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
4197 | ||
4198 | /* Check for valid src and dst type combination. */ | |
4199 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4200 | spec->dst_type == NX_LEARN_DST_LOAD || | |
4201 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
4202 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
4203 | /* OK. */ | |
4204 | } else { | |
4205 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4206 | } | |
4207 | ||
4208 | /* Check that the arguments don't overrun the end of the action. */ | |
4209 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
4210 | return OFPERR_OFPBAC_BAD_LEN; | |
4211 | } | |
4212 | ||
4213 | /* Get the source. */ | |
4214 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
4215 | get_subfield(spec->n_bits, &p, &spec->src); | |
4216 | } else { | |
4217 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
4218 | ||
4219 | bitwise_copy(p, p_bytes, 0, | |
4220 | &spec->src_imm, sizeof spec->src_imm, 0, | |
4221 | spec->n_bits); | |
4222 | p = (const uint8_t *) p + p_bytes; | |
4223 | } | |
4224 | ||
4225 | /* Get the destination. */ | |
4226 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4227 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
4228 | get_subfield(spec->n_bits, &p, &spec->dst); | |
4229 | } | |
4230 | } | |
ce058104 | 4231 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
4232 | |
4233 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
4234 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4235 | } | |
4236 | ||
4237 | return 0; | |
4238 | } | |
4239 | ||
4240 | static void | |
4241 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
4242 | { | |
4243 | ofpbuf_put(b, &x, sizeof x); | |
4244 | } | |
4245 | ||
4246 | static void | |
4247 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
4248 | { | |
4249 | ofpbuf_put(b, &x, sizeof x); | |
4250 | } | |
4251 | ||
4252 | static void | |
4253 | put_u16(struct ofpbuf *b, uint16_t x) | |
4254 | { | |
4255 | put_be16(b, htons(x)); | |
4256 | } | |
4257 | ||
4258 | static void | |
4259 | put_u32(struct ofpbuf *b, uint32_t x) | |
4260 | { | |
4261 | put_be32(b, htonl(x)); | |
4262 | } | |
4263 | ||
4264 | static void | |
4265 | encode_LEARN(const struct ofpact_learn *learn, | |
4266 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4267 | { | |
4268 | const struct ofpact_learn_spec *spec; | |
4269 | struct nx_action_learn *nal; | |
4270 | size_t start_ofs; | |
4271 | ||
6fd6ed71 | 4272 | start_ofs = out->size; |
c2d936a4 BP |
4273 | nal = put_NXAST_LEARN(out); |
4274 | nal->idle_timeout = htons(learn->idle_timeout); | |
4275 | nal->hard_timeout = htons(learn->hard_timeout); | |
4276 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
4277 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
4278 | nal->priority = htons(learn->priority); | |
4279 | nal->cookie = learn->cookie; | |
4280 | nal->flags = htons(learn->flags); | |
4281 | nal->table_id = learn->table_id; | |
4282 | ||
4283 | for (spec = learn->specs; spec < &learn->specs[learn->n_specs]; spec++) { | |
4284 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); | |
4285 | ||
4286 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
508a9338 | 4287 | put_u32(out, mf_nxm_header(spec->src.field->id)); |
c2d936a4 BP |
4288 | put_u16(out, spec->src.ofs); |
4289 | } else { | |
4290 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
4291 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
4292 | bitwise_copy(&spec->src_imm, sizeof spec->src_imm, 0, | |
4293 | bits, n_dst_bytes, 0, | |
4294 | spec->n_bits); | |
4295 | } | |
4296 | ||
4297 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4298 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
508a9338 | 4299 | put_u32(out, mf_nxm_header(spec->dst.field->id)); |
c2d936a4 BP |
4300 | put_u16(out, spec->dst.ofs); |
4301 | } | |
4302 | } | |
4303 | ||
178742f9 | 4304 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
4305 | } |
4306 | ||
cab50449 | 4307 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4308 | parse_LEARN(char *arg, struct ofpbuf *ofpacts, |
4309 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4310 | { | |
4311 | return learn_parse(arg, ofpacts); | |
4312 | } | |
4313 | ||
4314 | static void | |
4315 | format_LEARN(const struct ofpact_learn *a, struct ds *s) | |
4316 | { | |
4317 | learn_format(a, s); | |
4318 | } | |
4319 | \f | |
18080541 BP |
4320 | /* Action structure for NXAST_CONJUNCTION. */ |
4321 | struct nx_action_conjunction { | |
4322 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4323 | ovs_be16 len; /* At least 16. */ | |
4324 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4325 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
4326 | uint8_t clause; | |
4327 | uint8_t n_clauses; | |
4328 | ovs_be32 id; | |
4329 | }; | |
4330 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
4331 | ||
4332 | static void | |
4333 | add_conjunction(struct ofpbuf *out, | |
4334 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
4335 | { | |
4336 | struct ofpact_conjunction *oc; | |
4337 | ||
4338 | oc = ofpact_put_CONJUNCTION(out); | |
4339 | oc->id = id; | |
4340 | oc->clause = clause; | |
4341 | oc->n_clauses = n_clauses; | |
4342 | } | |
4343 | ||
4344 | static enum ofperr | |
4345 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 4346 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
4347 | struct ofpbuf *out) |
4348 | { | |
4349 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
4350 | || nac->clause >= nac->n_clauses) { | |
4351 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
4352 | } else { | |
4353 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
4354 | return 0; | |
4355 | } | |
4356 | } | |
4357 | ||
4358 | static void | |
4359 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
4360 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4361 | { | |
4362 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
4363 | nac->clause = oc->clause; | |
4364 | nac->n_clauses = oc->n_clauses; | |
4365 | nac->id = htonl(oc->id); | |
4366 | } | |
4367 | ||
4368 | static void | |
4369 | format_CONJUNCTION(const struct ofpact_conjunction *oc, struct ds *s) | |
4370 | { | |
b1c5bf1f QM |
4371 | ds_put_format(s, "%sconjunction(%s%"PRIu32",%"PRIu8"/%"PRIu8"%s)%s", |
4372 | colors.paren, colors.end, | |
4373 | oc->id, oc->clause + 1, oc->n_clauses, | |
4374 | colors.paren, colors.end); | |
18080541 BP |
4375 | } |
4376 | ||
4377 | static char * OVS_WARN_UNUSED_RESULT | |
4378 | parse_CONJUNCTION(const char *arg, struct ofpbuf *ofpacts, | |
4379 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4380 | { | |
4381 | uint8_t n_clauses; | |
4382 | uint8_t clause; | |
4383 | uint32_t id; | |
4384 | int n; | |
4385 | ||
4386 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
4387 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
4388 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
4389 | } | |
4390 | ||
4391 | if (n_clauses < 2) { | |
4392 | return xstrdup("conjunction must have at least 2 clauses"); | |
4393 | } else if (n_clauses > 64) { | |
4394 | return xstrdup("conjunction must have at most 64 clauses"); | |
4395 | } else if (clause < 1) { | |
4396 | return xstrdup("clause index must be positive"); | |
4397 | } else if (clause > n_clauses) { | |
4398 | return xstrdup("clause index must be less than or equal to " | |
4399 | "number of clauses"); | |
4400 | } | |
4401 | ||
4402 | add_conjunction(ofpacts, id, clause - 1, n_clauses); | |
4403 | return NULL; | |
4404 | } | |
4405 | \f | |
c2d936a4 BP |
4406 | /* Action structure for NXAST_MULTIPATH. |
4407 | * | |
4408 | * This action performs the following steps in sequence: | |
4409 | * | |
4410 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
4411 | * Refer to the definition of "enum nx_mp_fields" for details. | |
4412 | * | |
4413 | * The 'basis' value is used as a universal hash parameter, that is, | |
4414 | * different values of 'basis' yield different hash functions. The | |
4415 | * particular universal hash function used is implementation-defined. | |
4416 | * | |
4417 | * The hashed fields' values are drawn from the current state of the | |
4418 | * flow, including all modifications that have been made by actions up to | |
4419 | * this point. | |
4420 | * | |
4421 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
4422 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
4423 | * for details. | |
4424 | * | |
4425 | * The output of the algorithm is 'link', an unsigned integer less than | |
4426 | * or equal to 'max_link'. | |
4427 | * | |
4428 | * Some algorithms use 'arg' as an additional argument. | |
4429 | * | |
4430 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
4431 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
4432 | * action. | |
4433 | * | |
4434 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
4435 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
4436 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
4437 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
4438 | */ | |
4439 | struct nx_action_multipath { | |
4440 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4441 | ovs_be16 len; /* Length is 32. */ | |
4442 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4443 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
4444 | ||
4445 | /* What fields to hash and how. */ | |
4446 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
4447 | ovs_be16 basis; /* Universal hash parameter. */ | |
4448 | ovs_be16 pad0; | |
4449 | ||
4450 | /* Multipath link choice algorithm to apply to hash value. */ | |
4451 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
4452 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
4453 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
4454 | ovs_be16 pad1; | |
4455 | ||
4456 | /* Where to store the result. */ | |
4457 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
4458 | ovs_be32 dst; /* Destination. */ | |
4459 | }; | |
4460 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
4461 | ||
4462 | static enum ofperr | |
4463 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 4464 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4465 | struct ofpbuf *out) |
4466 | { | |
4467 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
4468 | size_t min_n_bits = log_2_ceil(n_links); | |
4469 | struct ofpact_multipath *mp; | |
4470 | ||
4471 | mp = ofpact_put_MULTIPATH(out); | |
4472 | mp->fields = ntohs(nam->fields); | |
4473 | mp->basis = ntohs(nam->basis); | |
4474 | mp->algorithm = ntohs(nam->algorithm); | |
4475 | mp->max_link = ntohs(nam->max_link); | |
4476 | mp->arg = ntohl(nam->arg); | |
4477 | mp->dst.field = mf_from_nxm_header(ntohl(nam->dst)); | |
4478 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); | |
4479 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
4480 | ||
4481 | if (!flow_hash_fields_valid(mp->fields)) { | |
4482 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
4483 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4484 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
4485 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
4486 | && mp->algorithm != NX_MP_ALG_HRW | |
4487 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
4488 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
4489 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4490 | } else if (mp->dst.n_bits < min_n_bits) { | |
4491 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
4492 | "%"PRIu32" links", min_n_bits, n_links); | |
4493 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4494 | } | |
4495 | ||
4496 | return multipath_check(mp, NULL); | |
4497 | } | |
4498 | ||
4499 | static void | |
4500 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
4501 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4502 | { | |
4503 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
4504 | ||
4505 | nam->fields = htons(mp->fields); | |
4506 | nam->basis = htons(mp->basis); | |
4507 | nam->algorithm = htons(mp->algorithm); | |
4508 | nam->max_link = htons(mp->max_link); | |
4509 | nam->arg = htonl(mp->arg); | |
4510 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
508a9338 | 4511 | nam->dst = htonl(mf_nxm_header(mp->dst.field->id)); |
c2d936a4 BP |
4512 | } |
4513 | ||
cab50449 | 4514 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4515 | parse_MULTIPATH(const char *arg, struct ofpbuf *ofpacts, |
4516 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4517 | { | |
4518 | return multipath_parse(ofpact_put_MULTIPATH(ofpacts), arg); | |
4519 | } | |
4520 | ||
4521 | static void | |
4522 | format_MULTIPATH(const struct ofpact_multipath *a, struct ds *s) | |
4523 | { | |
4524 | multipath_format(a, s); | |
4525 | } | |
4526 | \f | |
4527 | /* Action structure for NXAST_NOTE. | |
4528 | * | |
4529 | * This action has no effect. It is variable length. The switch does not | |
4530 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
4531 | * can use this action to attach arbitrary metadata to a flow. | |
4532 | * | |
4533 | * This action might go away in the future. | |
4534 | */ | |
4535 | struct nx_action_note { | |
4536 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4537 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
4538 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4539 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
4540 | uint8_t note[6]; /* Start of user-defined data. */ | |
4541 | /* Possibly followed by additional user-defined data. */ | |
4542 | }; | |
4543 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
4544 | ||
4545 | static enum ofperr | |
f3cd3ac7 JS |
4546 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
4547 | enum ofp_version ofp_version OVS_UNUSED, | |
4548 | struct ofpbuf *out) | |
c2d936a4 BP |
4549 | { |
4550 | struct ofpact_note *note; | |
4551 | unsigned int length; | |
4552 | ||
4553 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 4554 | note = ofpact_put_NOTE(out); |
c2d936a4 | 4555 | note->length = length; |
2bd318de | 4556 | ofpbuf_put(out, nan->note, length); |
ce058104 | 4557 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
4558 | |
4559 | return 0; | |
4560 | } | |
4561 | ||
4562 | static void | |
4563 | encode_NOTE(const struct ofpact_note *note, | |
4564 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4565 | { | |
6fd6ed71 | 4566 | size_t start_ofs = out->size; |
c2d936a4 | 4567 | struct nx_action_note *nan; |
c2d936a4 BP |
4568 | |
4569 | put_NXAST_NOTE(out); | |
6fd6ed71 | 4570 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
4571 | |
4572 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 4573 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
4574 | } |
4575 | ||
cab50449 | 4576 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4577 | parse_NOTE(const char *arg, struct ofpbuf *ofpacts, |
4578 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4579 | { | |
27aa8793 BP |
4580 | size_t start_ofs = ofpacts->size; |
4581 | ofpact_put_NOTE(ofpacts); | |
4582 | arg = ofpbuf_put_hex(ofpacts, arg, NULL); | |
4583 | if (arg[0]) { | |
4584 | return xstrdup("bad hex digit in `note' argument"); | |
4585 | } | |
4586 | struct ofpact_note *note = ofpbuf_at_assert(ofpacts, start_ofs, | |
4587 | sizeof *note); | |
4588 | note->length = ofpacts->size - (start_ofs + sizeof *note); | |
ce058104 | 4589 | ofpact_finish_NOTE(ofpacts, ¬e); |
c2d936a4 BP |
4590 | return NULL; |
4591 | } | |
4592 | ||
4593 | static void | |
4594 | format_NOTE(const struct ofpact_note *a, struct ds *s) | |
4595 | { | |
b1c5bf1f | 4596 | ds_put_format(s, "%snote:%s", colors.param, colors.end); |
bdcad671 | 4597 | format_hex_arg(s, a->data, a->length); |
c2d936a4 BP |
4598 | } |
4599 | \f | |
4600 | /* Exit action. */ | |
4601 | ||
4602 | static enum ofperr | |
4603 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
4604 | { | |
4605 | ofpact_put_EXIT(out); | |
4606 | return 0; | |
4607 | } | |
4608 | ||
4609 | static void | |
4610 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
4611 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4612 | { | |
4613 | put_NXAST_EXIT(out); | |
4614 | } | |
4615 | ||
cab50449 | 4616 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4617 | parse_EXIT(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
4618 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4619 | { | |
4620 | ofpact_put_EXIT(ofpacts); | |
4621 | return NULL; | |
4622 | } | |
4623 | ||
4624 | static void | |
4625 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
4626 | { | |
b1c5bf1f | 4627 | ds_put_format(s, "%sexit%s", colors.special, colors.end); |
c2d936a4 BP |
4628 | } |
4629 | \f | |
e672ff9b JR |
4630 | /* Unroll xlate action. */ |
4631 | ||
4632 | static void | |
4633 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
4634 | enum ofp_version ofp_version OVS_UNUSED, | |
4635 | struct ofpbuf *out OVS_UNUSED) | |
4636 | { | |
4637 | OVS_NOT_REACHED(); | |
4638 | } | |
4639 | ||
4640 | static char * OVS_WARN_UNUSED_RESULT | |
4641 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, struct ofpbuf *ofpacts OVS_UNUSED, | |
4642 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4643 | { | |
4644 | OVS_NOT_REACHED(); | |
4645 | return NULL; | |
4646 | } | |
4647 | ||
4648 | static void | |
28632a8a | 4649 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, struct ds *s) |
e672ff9b | 4650 | { |
b1c5bf1f QM |
4651 | ds_put_format(s, "%sunroll_xlate(%s%stable=%s%"PRIu8 |
4652 | ", %scookie=%s%"PRIu64"%s)%s", | |
4653 | colors.paren, colors.end, | |
4654 | colors.special, colors.end, a->rule_table_id, | |
4655 | colors.param, colors.end, ntohll(a->rule_cookie), | |
4656 | colors.paren, colors.end); | |
e672ff9b JR |
4657 | } |
4658 | \f | |
c2d936a4 BP |
4659 | /* Action structure for NXAST_SAMPLE. |
4660 | * | |
4661 | * Samples matching packets with the given probability and sends them | |
4662 | * each to the set of collectors identified with the given ID. The | |
4663 | * probability is expressed as a number of packets to be sampled out | |
4664 | * of USHRT_MAX packets, and must be >0. | |
4665 | * | |
4666 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
4667 | * record sent for each sampled packet is associated with the given | |
4668 | * observation domain ID and observation point ID. Each IPFIX flow | |
4669 | * record contain the sampled packet's headers when executing this | |
4670 | * rule. If a sampled packet's headers are modified by previous | |
4671 | * actions in the flow, those modified headers are sent. */ | |
4672 | struct nx_action_sample { | |
4673 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4674 | ovs_be16 len; /* Length is 24. */ | |
4675 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4676 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
4677 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
4678 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
4679 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
4680 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
4681 | }; | |
4682 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
4683 | ||
4684 | static enum ofperr | |
f3cd3ac7 JS |
4685 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
4686 | enum ofp_version ofp_version OVS_UNUSED, | |
4687 | struct ofpbuf *out) | |
c2d936a4 BP |
4688 | { |
4689 | struct ofpact_sample *sample; | |
4690 | ||
4691 | sample = ofpact_put_SAMPLE(out); | |
4692 | sample->probability = ntohs(nas->probability); | |
4693 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
4694 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
4695 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
4696 | ||
4697 | if (sample->probability == 0) { | |
4698 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4699 | } | |
4700 | ||
4701 | return 0; | |
4702 | } | |
4703 | ||
4704 | static void | |
4705 | encode_SAMPLE(const struct ofpact_sample *sample, | |
4706 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4707 | { | |
4708 | struct nx_action_sample *nas; | |
4709 | ||
4710 | nas = put_NXAST_SAMPLE(out); | |
4711 | nas->probability = htons(sample->probability); | |
4712 | nas->collector_set_id = htonl(sample->collector_set_id); | |
4713 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
4714 | nas->obs_point_id = htonl(sample->obs_point_id); | |
4715 | } | |
4716 | ||
4717 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
4718 | * action to 'ofpacts'. | |
4719 | * | |
4720 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
4721 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 4722 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4723 | parse_SAMPLE(char *arg, struct ofpbuf *ofpacts, |
4724 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4725 | { | |
4726 | struct ofpact_sample *os = ofpact_put_SAMPLE(ofpacts); | |
4727 | char *key, *value; | |
4728 | ||
4729 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
4730 | char *error = NULL; | |
4731 | ||
4732 | if (!strcmp(key, "probability")) { | |
4733 | error = str_to_u16(value, "probability", &os->probability); | |
4734 | if (!error && os->probability == 0) { | |
4735 | error = xasprintf("invalid probability value \"%s\"", value); | |
4736 | } | |
4737 | } else if (!strcmp(key, "collector_set_id")) { | |
4738 | error = str_to_u32(value, &os->collector_set_id); | |
4739 | } else if (!strcmp(key, "obs_domain_id")) { | |
4740 | error = str_to_u32(value, &os->obs_domain_id); | |
4741 | } else if (!strcmp(key, "obs_point_id")) { | |
4742 | error = str_to_u32(value, &os->obs_point_id); | |
4743 | } else { | |
4744 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
4745 | key); | |
4746 | } | |
4747 | if (error) { | |
4748 | return error; | |
4749 | } | |
4750 | } | |
4751 | if (os->probability == 0) { | |
4752 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
4753 | } | |
4754 | return NULL; | |
4755 | } | |
4756 | ||
4757 | static void | |
4758 | format_SAMPLE(const struct ofpact_sample *a, struct ds *s) | |
4759 | { | |
b1c5bf1f QM |
4760 | ds_put_format(s, "%ssample(%s%sprobability=%s%"PRIu16 |
4761 | ",%scollector_set_id=%s%"PRIu32 | |
4762 | ",%sobs_domain_id=%s%"PRIu32 | |
4763 | ",%sobs_point_id=%s%"PRIu32"%s)%s", | |
4764 | colors.paren, colors.end, | |
4765 | colors.param, colors.end, a->probability, | |
4766 | colors.param, colors.end, a->collector_set_id, | |
4767 | colors.param, colors.end, a->obs_domain_id, | |
4768 | colors.param, colors.end, a->obs_point_id, | |
4769 | colors.paren, colors.end); | |
c2d936a4 BP |
4770 | } |
4771 | \f | |
d4abaff5 BP |
4772 | /* debug_recirc instruction. */ |
4773 | ||
4774 | static bool enable_debug; | |
4775 | ||
4776 | void | |
4777 | ofpact_dummy_enable(void) | |
4778 | { | |
4779 | enable_debug = true; | |
4780 | } | |
4781 | ||
4782 | static enum ofperr | |
4783 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
4784 | { | |
4785 | if (!enable_debug) { | |
4786 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
4787 | } | |
4788 | ||
4789 | ofpact_put_DEBUG_RECIRC(out); | |
4790 | return 0; | |
4791 | } | |
4792 | ||
4793 | static void | |
4794 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
4795 | enum ofp_version ofp_version OVS_UNUSED, | |
4796 | struct ofpbuf *out) | |
4797 | { | |
4798 | put_NXAST_DEBUG_RECIRC(out); | |
4799 | } | |
4800 | ||
4801 | static char * OVS_WARN_UNUSED_RESULT | |
4802 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, | |
4803 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4804 | { | |
4805 | ofpact_put_DEBUG_RECIRC(ofpacts); | |
4806 | return NULL; | |
4807 | } | |
4808 | ||
4809 | static void | |
4810 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
4811 | { | |
b1c5bf1f | 4812 | ds_put_format(s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 4813 | } |
07659514 JS |
4814 | |
4815 | /* Action structure for NXAST_CT. | |
4816 | * | |
4817 | * Pass traffic to the connection tracker. | |
4818 | * | |
4819 | * There are two important concepts to understanding the connection tracking | |
4820 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
4821 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
4822 | * | |
4823 | * - Packet State: | |
4824 | * | |
4825 | * Untracked packets have not yet passed through the connection tracker, | |
4826 | * and the connection state for such packets is unknown. In most cases, | |
4827 | * packets entering the OpenFlow pipeline will initially be in the | |
4828 | * untracked state. Untracked packets may become tracked by executing | |
4829 | * NXAST_CT with a "recirc_table" specified. This makes various aspects | |
4830 | * about the connection available, in particular the connection state. | |
4831 | * | |
4832 | * Tracked packets have previously passed through the connection tracker. | |
4833 | * These packets will remain tracked through until the end of the OpenFlow | |
4834 | * pipeline. Tracked packets which have NXAST_CT executed with a | |
4835 | * "recirc_table" specified will return to the tracked state. | |
4836 | * | |
4837 | * The packet state is only significant for the duration of packet | |
4838 | * processing within the OpenFlow pipeline. | |
4839 | * | |
4840 | * - Connection State: | |
4841 | * | |
4842 | * Multiple packets may be associated with a single connection. Initially, | |
4843 | * all connections are uncommitted. The connection state corresponding to | |
4844 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
4845 | * | |
4846 | * Uncommitted connections have no state stored about them. Uncommitted | |
4847 | * connections may transition into the committed state by executing | |
4848 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
4849 | * | |
4850 | * Once a connection becomes committed, information may be gathered about | |
4851 | * the connection by passing subsequent packets through the connection | |
4852 | * tracker, and the state of the connection will be stored beyond the | |
4853 | * lifetime of packet processing. | |
4854 | * | |
4855 | * Connections may transition back into the uncommitted state due to | |
4856 | * external timers, or due to the contents of packets that are sent to the | |
4857 | * connection tracker. This behaviour is outside of the scope of the | |
4858 | * OpenFlow interface. | |
4859 | * | |
4860 | * The "zone" specifies a context within which the tracking is done: | |
4861 | * | |
4862 | * The connection tracking zone is a 16-bit number. Each zone is an | |
4863 | * independent connection tracking context. The connection state for each | |
4864 | * connection is completely separate for each zone, so if a connection | |
4865 | * is committed to zone A, then it will remain uncommitted in zone B. | |
4866 | * If NXAST_CT is executed with the same zone multiple times, later | |
4867 | * executions have no effect. | |
4868 | * | |
4869 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
4870 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
4871 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
4872 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
4873 | * are the same as the acceptable nxm_header values for the 'src' field of | |
4874 | * NXAST_REG_MOVE. | |
4875 | * | |
4876 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
4877 | * connection tracking zone. | |
4878 | * | |
4879 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
4880 | * | |
4881 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
4882 | * packet will be logically cloned prior to executing this action. One | |
4883 | * copy will be sent to the connection tracker, then will be re-injected | |
4884 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
4885 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
4886 | * fields will be populated. The original instance of the packet will | |
4887 | * continue the current actions list. This can be thought of as similar to | |
4888 | * the effect of the "output" action: One copy is sent out (in this case, | |
4889 | * to the connection tracker), but the current copy continues processing. | |
4890 | * | |
4891 | * It is strongly recommended that this table is later than the current | |
4892 | * table, to prevent loops. | |
8e53fe8c | 4893 | * |
d787ad39 JS |
4894 | * The "alg" attaches protocol-specific behaviour to this action: |
4895 | * | |
4896 | * The ALG is a 16-bit number which specifies that additional | |
4897 | * processing should be applied to this traffic. | |
4898 | * | |
4899 | * Protocol | Value | Meaning | |
4900 | * -------------------------------------------------------------------- | |
4901 | * None | 0 | No protocol-specific behaviour. | |
4902 | * FTP | 21 | Parse FTP control connections and observe the | |
4903 | * | | negotiation of related data connections. | |
4904 | * Other | Other | Unsupported protocols. | |
4905 | * | |
4906 | * By way of example, if FTP control connections have this action applied | |
4907 | * with the ALG set to FTP (21), then the connection tracker will observe | |
4908 | * the negotiation of data connections. This allows the connection | |
4909 | * tracker to identify subsequent data connections as "related" to this | |
4910 | * existing connection. The "related" flag will be populated in the | |
4911 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
4912 | * specified. | |
4913 | * | |
8e53fe8c JS |
4914 | * Zero or more actions may immediately follow this action. These actions will |
4915 | * be executed within the context of the connection tracker, and they require | |
4916 | * the NX_CT_F_COMMIT flag to be set. | |
07659514 JS |
4917 | */ |
4918 | struct nx_action_conntrack { | |
4919 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4920 | ovs_be16 len; /* At least 24. */ | |
4921 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4922 | ovs_be16 subtype; /* NXAST_CT. */ | |
4923 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
4924 | * Unspecified flag bits must be zero. */ | |
4925 | ovs_be32 zone_src; /* Connection tracking context. */ | |
4926 | union { | |
4927 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
4928 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
4929 | }; | |
4930 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
4931 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
4932 | uint8_t pad[3]; /* Zeroes */ |
4933 | ovs_be16 alg; /* Well-known port number for the protocol. | |
4934 | * 0 indicates no ALG is required. */ | |
07659514 JS |
4935 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
4936 | * these is included in 'len'. */ | |
4937 | }; | |
4938 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
4939 | ||
4940 | static enum ofperr | |
4941 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
4942 | struct ofpact_conntrack *out) | |
4943 | { | |
4944 | if (nac->zone_src) { | |
4945 | enum ofperr error; | |
4946 | ||
4947 | out->zone_src.field = mf_from_nxm_header(ntohl(nac->zone_src)); | |
4948 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); | |
4949 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
4950 | error = mf_check_src(&out->zone_src, NULL); | |
4951 | if (error) { | |
4952 | return error; | |
4953 | } | |
4954 | ||
4955 | if (out->zone_src.n_bits != 16) { | |
4956 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
4957 | out->zone_src.n_bits); | |
4958 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
4959 | } | |
4960 | } else { | |
4961 | out->zone_src.field = NULL; | |
4962 | out->zone_imm = ntohs(nac->zone_imm); | |
4963 | } | |
4964 | ||
4965 | return 0; | |
4966 | } | |
4967 | ||
4968 | static enum ofperr | |
4969 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
8e53fe8c | 4970 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 | 4971 | { |
8e53fe8c | 4972 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 4973 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
07659514 | 4974 | conntrack->flags = ntohs(nac->flags); |
0a2869d5 BP |
4975 | |
4976 | int error = decode_ct_zone(nac, conntrack); | |
07659514 JS |
4977 | if (error) { |
4978 | goto out; | |
4979 | } | |
4980 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 4981 | conntrack->alg = ntohs(nac->alg); |
07659514 | 4982 | |
8e53fe8c JS |
4983 | ofpbuf_pull(out, sizeof(*conntrack)); |
4984 | ||
0a2869d5 BP |
4985 | struct ofpbuf openflow = ofpbuf_const_initializer( |
4986 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
4987 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
4988 | ofp_version, | |
4989 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
4990 | out, OFPACT_CT); | |
4991 | if (error) { | |
4992 | goto out; | |
4993 | } | |
4994 | ||
4995 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
4996 | out->header = &conntrack->ofpact; | |
ce058104 | 4997 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
4998 | |
4999 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
5000 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
5001 | const struct ofpact *a; |
5002 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
5003 | ||
5004 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
5005 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
5006 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
5007 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
5008 | "other than NAT without arguments are specified."); | |
5009 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
5010 | goto out; | |
5011 | } | |
5012 | } | |
8e53fe8c JS |
5013 | } |
5014 | ||
07659514 | 5015 | out: |
8e53fe8c | 5016 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
5017 | return error; |
5018 | } | |
5019 | ||
5020 | static void | |
5021 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 5022 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
5023 | { |
5024 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
5025 | const size_t ofs = out->size; |
5026 | size_t len; | |
07659514 JS |
5027 | |
5028 | nac = put_NXAST_CT(out); | |
5029 | nac->flags = htons(conntrack->flags); | |
5030 | if (conntrack->zone_src.field) { | |
5031 | nac->zone_src = htonl(mf_nxm_header(conntrack->zone_src.field->id)); | |
5032 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, | |
5033 | conntrack->zone_src.n_bits); | |
5034 | } else { | |
5035 | nac->zone_src = htonl(0); | |
5036 | nac->zone_imm = htons(conntrack->zone_imm); | |
5037 | } | |
5038 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 5039 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
5040 | |
5041 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
5042 | ofpact_ct_get_action_len(conntrack), | |
5043 | out, ofp_version); | |
5044 | len += sizeof(*nac); | |
5045 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
5046 | nac->len = htons(len); | |
07659514 JS |
5047 | } |
5048 | ||
9ac0aada JR |
5049 | static char * OVS_WARN_UNUSED_RESULT parse_NAT(char *arg, struct ofpbuf *, |
5050 | enum ofputil_protocol * OVS_UNUSED); | |
5051 | ||
07659514 JS |
5052 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
5053 | * action to 'ofpacts'. | |
5054 | * | |
5055 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5056 | * error. The caller is responsible for freeing the returned string. */ | |
5057 | static char * OVS_WARN_UNUSED_RESULT | |
5058 | parse_CT(char *arg, struct ofpbuf *ofpacts, | |
8e53fe8c | 5059 | enum ofputil_protocol *usable_protocols) |
07659514 | 5060 | { |
8e53fe8c | 5061 | const size_t ct_offset = ofpacts_pull(ofpacts); |
07659514 JS |
5062 | struct ofpact_conntrack *oc; |
5063 | char *error = NULL; | |
5064 | char *key, *value; | |
5065 | ||
5066 | oc = ofpact_put_CT(ofpacts); | |
5067 | oc->flags = 0; | |
5068 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
5069 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
5070 | if (!strcmp(key, "commit")) { | |
5071 | oc->flags |= NX_CT_F_COMMIT; | |
5072 | } else if (!strcmp(key, "table")) { | |
5073 | error = str_to_u8(value, "recirc_table", &oc->recirc_table); | |
5074 | if (!error && oc->recirc_table == NX_CT_RECIRC_NONE) { | |
5075 | error = xasprintf("invalid table %#"PRIx16, oc->recirc_table); | |
5076 | } | |
5077 | } else if (!strcmp(key, "zone")) { | |
5078 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
5079 | ||
5080 | if (error) { | |
5081 | free(error); | |
5082 | error = mf_parse_subfield(&oc->zone_src, value); | |
5083 | if (error) { | |
5084 | return error; | |
5085 | } | |
5086 | } | |
d787ad39 JS |
5087 | } else if (!strcmp(key, "alg")) { |
5088 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada JR |
5089 | } else if (!strcmp(key, "nat")) { |
5090 | const size_t nat_offset = ofpacts_pull(ofpacts); | |
5091 | ||
5092 | error = parse_NAT(value, ofpacts, usable_protocols); | |
9ac0aada JR |
5093 | /* Update CT action pointer and length. */ |
5094 | ofpacts->header = ofpbuf_push_uninit(ofpacts, nat_offset); | |
5095 | oc = ofpacts->header; | |
8e53fe8c JS |
5096 | } else if (!strcmp(key, "exec")) { |
5097 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
5098 | * nesting can be handled transparently. */ | |
76e3e669 | 5099 | enum ofputil_protocol usable_protocols2; |
9ac0aada | 5100 | const size_t exec_offset = ofpacts_pull(ofpacts); |
76e3e669 | 5101 | |
76e3e669 JR |
5102 | /* Initializes 'usable_protocol2', fold it back to |
5103 | * '*usable_protocols' afterwards, so that we do not lose | |
5104 | * restrictions already in there. */ | |
5105 | error = ofpacts_parse_copy(value, ofpacts, &usable_protocols2, | |
5106 | false, OFPACT_CT); | |
5107 | *usable_protocols &= usable_protocols2; | |
9ac0aada | 5108 | ofpacts->header = ofpbuf_push_uninit(ofpacts, exec_offset); |
8e53fe8c | 5109 | oc = ofpacts->header; |
07659514 JS |
5110 | } else { |
5111 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
5112 | } | |
5113 | if (error) { | |
5114 | break; | |
5115 | } | |
5116 | } | |
5117 | ||
ce058104 | 5118 | ofpact_finish_CT(ofpacts, &oc); |
8e53fe8c | 5119 | ofpbuf_push_uninit(ofpacts, ct_offset); |
07659514 JS |
5120 | return error; |
5121 | } | |
5122 | ||
d787ad39 JS |
5123 | static void |
5124 | format_alg(int port, struct ds *s) | |
5125 | { | |
5126 | if (port == IPPORT_FTP) { | |
b1c5bf1f | 5127 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
d787ad39 | 5128 | } else if (port) { |
b1c5bf1f | 5129 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
d787ad39 JS |
5130 | } |
5131 | } | |
5132 | ||
9ac0aada JR |
5133 | static void format_NAT(const struct ofpact_nat *a, struct ds *ds); |
5134 | ||
07659514 JS |
5135 | static void |
5136 | format_CT(const struct ofpact_conntrack *a, struct ds *s) | |
5137 | { | |
b1c5bf1f | 5138 | ds_put_format(s, "%sct(%s", colors.paren, colors.end); |
07659514 | 5139 | if (a->flags & NX_CT_F_COMMIT) { |
b1c5bf1f | 5140 | ds_put_format(s, "%scommit%s,", colors.value, colors.end); |
07659514 JS |
5141 | } |
5142 | if (a->recirc_table != NX_CT_RECIRC_NONE) { | |
b1c5bf1f QM |
5143 | ds_put_format(s, "%stable=%s%"PRIu8",", |
5144 | colors.special, colors.end, a->recirc_table); | |
07659514 JS |
5145 | } |
5146 | if (a->zone_src.field) { | |
b1c5bf1f | 5147 | ds_put_format(s, "%szone=%s", colors.param, colors.end); |
07659514 JS |
5148 | mf_format_subfield(&a->zone_src, s); |
5149 | ds_put_char(s, ','); | |
5150 | } else if (a->zone_imm) { | |
b1c5bf1f QM |
5151 | ds_put_format(s, "%szone=%s%"PRIu16",", |
5152 | colors.param, colors.end, a->zone_imm); | |
07659514 | 5153 | } |
9ac0aada JR |
5154 | /* If the first action is a NAT action, format it outside of the 'exec' |
5155 | * envelope. */ | |
5156 | const struct ofpact *action = a->actions; | |
5157 | size_t actions_len = ofpact_ct_get_action_len(a); | |
5158 | if (actions_len && action->type == OFPACT_NAT) { | |
5159 | format_NAT(ofpact_get_NAT(action), s); | |
5160 | ds_put_char(s, ','); | |
5161 | actions_len -= OFPACT_ALIGN(action->len); | |
5162 | action = ofpact_next(action); | |
5163 | } | |
5164 | if (actions_len) { | |
b1c5bf1f | 5165 | ds_put_format(s, "%sexec(%s", colors.paren, colors.end); |
9ac0aada | 5166 | ofpacts_format(action, actions_len, s); |
b1c5bf1f | 5167 | ds_put_format(s, "%s),%s", colors.paren, colors.end); |
8e53fe8c | 5168 | } |
d787ad39 | 5169 | format_alg(a->alg, s); |
07659514 | 5170 | ds_chomp(s, ','); |
b1c5bf1f | 5171 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
07659514 | 5172 | } |
9ac0aada JR |
5173 | \f |
5174 | /* NAT action. */ | |
5175 | ||
5176 | /* Which optional fields are present? */ | |
5177 | enum nx_nat_range { | |
5178 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
5179 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
5180 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
5181 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
5182 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
5183 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
5184 | }; | |
5185 | ||
5186 | /* Action structure for NXAST_NAT. */ | |
5187 | struct nx_action_nat { | |
5188 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5189 | ovs_be16 len; /* At least 16. */ | |
5190 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5191 | ovs_be16 subtype; /* NXAST_NAT. */ | |
5192 | uint8_t pad[2]; /* Must be zero. */ | |
5193 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
5194 | * Unspecified flag bits must be zero. */ | |
5195 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
5196 | /* Followed by optional parameters as specified by 'range_present' */ | |
5197 | }; | |
5198 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
5199 | ||
5200 | static void | |
5201 | encode_NAT(const struct ofpact_nat *nat, | |
5202 | enum ofp_version ofp_version OVS_UNUSED, | |
5203 | struct ofpbuf *out) | |
5204 | { | |
5205 | struct nx_action_nat *nan; | |
5206 | const size_t ofs = out->size; | |
5207 | uint16_t range_present = 0; | |
5208 | ||
5209 | nan = put_NXAST_NAT(out); | |
5210 | nan->flags = htons(nat->flags); | |
5211 | if (nat->range_af == AF_INET) { | |
5212 | if (nat->range.addr.ipv4.min) { | |
5213 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
5214 | *min = nat->range.addr.ipv4.min; | |
5215 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
5216 | } | |
5217 | if (nat->range.addr.ipv4.max) { | |
5218 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
5219 | *max = nat->range.addr.ipv4.max; | |
5220 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
5221 | } | |
5222 | } else if (nat->range_af == AF_INET6) { | |
5223 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
5224 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
5225 | *min = nat->range.addr.ipv6.min; | |
5226 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
5227 | } | |
5228 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
5229 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
5230 | *max = nat->range.addr.ipv6.max; | |
5231 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
5232 | } | |
5233 | } | |
5234 | if (nat->range_af != AF_UNSPEC) { | |
5235 | if (nat->range.proto.min) { | |
5236 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
5237 | *min = htons(nat->range.proto.min); | |
5238 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
5239 | } | |
5240 | if (nat->range.proto.max) { | |
5241 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
5242 | *max = htons(nat->range.proto.max); | |
5243 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
5244 | } | |
5245 | } | |
5246 | pad_ofpat(out, ofs); | |
5247 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
5248 | nan->range_present = htons(range_present); | |
5249 | } | |
5250 | ||
5251 | static enum ofperr | |
5252 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
5253 | enum ofp_version ofp_version OVS_UNUSED, | |
5254 | struct ofpbuf *out) | |
5255 | { | |
5256 | struct ofpact_nat *nat; | |
5257 | uint16_t range_present = ntohs(nan->range_present); | |
5258 | const char *opts = (char *)(nan + 1); | |
5259 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
5260 | ||
5261 | nat = ofpact_put_NAT(out); | |
5262 | nat->flags = ntohs(nan->flags); | |
5263 | ||
5264 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ | |
5265 | (LEN >= sizeof(TYPE) \ | |
5266 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
5267 | SRC += sizeof(TYPE)) \ | |
5268 | : NULL) | |
5269 | ||
5270 | nat->range_af = AF_UNSPEC; | |
5271 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
5272 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
5273 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5274 | } | |
5275 | ||
5276 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
5277 | || !nat->range.addr.ipv4.min) { | |
5278 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5279 | } | |
5280 | ||
5281 | nat->range_af = AF_INET; | |
5282 | ||
5283 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
5284 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
5285 | ovs_be32)) { | |
5286 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5287 | } | |
5288 | if (ntohl(nat->range.addr.ipv4.max) | |
5289 | < ntohl(nat->range.addr.ipv4.min)) { | |
5290 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5291 | } | |
5292 | } | |
5293 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
5294 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5295 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
5296 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
5297 | struct in6_addr) | |
5298 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
5299 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5300 | } | |
5301 | ||
5302 | nat->range_af = AF_INET6; | |
5303 | ||
5304 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
5305 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
5306 | struct in6_addr)) { | |
5307 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5308 | } | |
5309 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
5310 | sizeof(struct in6_addr)) < 0) { | |
5311 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5312 | } | |
5313 | } | |
5314 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
5315 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5316 | } | |
5317 | ||
5318 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
5319 | ovs_be16 proto; | |
5320 | ||
5321 | if (nat->range_af == AF_UNSPEC) { | |
5322 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5323 | } | |
5324 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
5325 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5326 | } | |
5327 | nat->range.proto.min = ntohs(proto); | |
5328 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
5329 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
5330 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5331 | } | |
5332 | nat->range.proto.max = ntohs(proto); | |
5333 | if (nat->range.proto.max < nat->range.proto.min) { | |
5334 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5335 | } | |
5336 | } | |
5337 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
5338 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5339 | } | |
5340 | ||
5341 | return 0; | |
5342 | } | |
5343 | ||
5344 | static void | |
5345 | format_NAT(const struct ofpact_nat *a, struct ds *ds) | |
5346 | { | |
b1c5bf1f | 5347 | ds_put_format(ds, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
5348 | |
5349 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
b1c5bf1f QM |
5350 | ds_put_format(ds, "%s(%s", colors.paren, colors.end); |
5351 | ds_put_format(ds, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
5352 | colors.param, colors.end); | |
9ac0aada JR |
5353 | |
5354 | if (a->range_af != AF_UNSPEC) { | |
b1c5bf1f | 5355 | ds_put_format(ds, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
5356 | |
5357 | if (a->range_af == AF_INET) { | |
5358 | ds_put_format(ds, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); | |
5359 | ||
5360 | if (a->range.addr.ipv4.max | |
5361 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
5362 | ds_put_format(ds, "-"IP_FMT, | |
5363 | IP_ARGS(a->range.addr.ipv4.max)); | |
5364 | } | |
5365 | } else if (a->range_af == AF_INET6) { | |
5366 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, ds, | |
5367 | a->range.proto.min); | |
5368 | ||
5369 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
5370 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
5371 | sizeof(struct in6_addr)) != 0) { | |
5372 | ds_put_char(ds, '-'); | |
5373 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, ds, | |
5374 | a->range.proto.min); | |
5375 | } | |
5376 | } | |
5377 | if (a->range.proto.min) { | |
5378 | ds_put_char(ds, ':'); | |
5379 | ds_put_format(ds, "%"PRIu16, a->range.proto.min); | |
5380 | ||
5381 | if (a->range.proto.max | |
5382 | && a->range.proto.max != a->range.proto.min) { | |
5383 | ds_put_format(ds, "-%"PRIu16, a->range.proto.max); | |
5384 | } | |
5385 | } | |
5386 | ds_put_char(ds, ','); | |
5387 | ||
5388 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
b1c5bf1f QM |
5389 | ds_put_format(ds, "%spersistent%s,", |
5390 | colors.value, colors.end); | |
9ac0aada JR |
5391 | } |
5392 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
b1c5bf1f | 5393 | ds_put_format(ds, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
5394 | } |
5395 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
b1c5bf1f | 5396 | ds_put_format(ds, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
5397 | } |
5398 | } | |
5399 | ds_chomp(ds, ','); | |
b1c5bf1f | 5400 | ds_put_format(ds, "%s)%s", colors.paren, colors.end); |
9ac0aada JR |
5401 | } |
5402 | } | |
5403 | ||
5404 | static char * OVS_WARN_UNUSED_RESULT | |
5405 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
5406 | { | |
5407 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
5408 | int n = 0; | |
5409 | ||
5410 | on->range_af = AF_UNSPEC; | |
5411 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
5412 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
5413 | on->range_af = AF_INET; | |
5414 | ||
5415 | if (s[n] == '-') { | |
5416 | n++; | |
5417 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
5418 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
5419 | || (ntohl(on->range.addr.ipv4.max) | |
5420 | < ntohl(on->range.addr.ipv4.min))) { | |
5421 | goto error; | |
5422 | } | |
5423 | } | |
5424 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
5425 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
5426 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
5427 | on->range_af = AF_INET6; | |
5428 | ||
5429 | if (s[n] == '-') { | |
5430 | n++; | |
5431 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
5432 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
5433 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
5434 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
5435 | sizeof on->range.addr.ipv6.max) < 0) { | |
5436 | goto error; | |
5437 | } | |
5438 | } | |
5439 | } | |
5440 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
5441 | n++; | |
5442 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
5443 | goto error; | |
5444 | } | |
5445 | if (s[n] == '-') { | |
5446 | n++; | |
5447 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
5448 | || on->range.proto.max < on->range.proto.min) { | |
5449 | goto error; | |
5450 | } | |
5451 | } | |
5452 | } | |
5453 | if (strlen(s) != n) { | |
5454 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
5455 | &s[n], s, n); | |
5456 | } | |
5457 | return NULL; | |
5458 | error: | |
5459 | return xasprintf("invalid nat range \"%s\"", s); | |
5460 | } | |
5461 | ||
5462 | ||
5463 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
5464 | * action to 'ofpacts'. | |
5465 | * | |
5466 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5467 | * error. The caller is responsible for freeing the returned string. */ | |
5468 | static char * OVS_WARN_UNUSED_RESULT | |
5469 | parse_NAT(char *arg, struct ofpbuf *ofpacts, | |
5470 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5471 | { | |
5472 | struct ofpact_nat *on = ofpact_put_NAT(ofpacts); | |
5473 | char *key, *value; | |
5474 | ||
5475 | on->flags = 0; | |
5476 | on->range_af = AF_UNSPEC; | |
5477 | ||
5478 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
5479 | char *error = NULL; | |
5480 | ||
5481 | if (!strcmp(key, "src")) { | |
5482 | on->flags |= NX_NAT_F_SRC; | |
5483 | error = str_to_nat_range(value, on); | |
5484 | } else if (!strcmp(key, "dst")) { | |
5485 | on->flags |= NX_NAT_F_DST; | |
5486 | error = str_to_nat_range(value, on); | |
5487 | } else if (!strcmp(key, "persistent")) { | |
5488 | on->flags |= NX_NAT_F_PERSISTENT; | |
5489 | } else if (!strcmp(key, "hash")) { | |
5490 | on->flags |= NX_NAT_F_PROTO_HASH; | |
5491 | } else if (!strcmp(key, "random")) { | |
5492 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
5493 | } else { | |
5494 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
5495 | key); | |
5496 | } | |
5497 | if (error) { | |
5498 | return error; | |
5499 | } | |
5500 | } | |
5501 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
5502 | return xasprintf("May only specify one of \"snat\" or \"dnat\"."); | |
5503 | } | |
5504 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
5505 | if (on->flags) { | |
5506 | return xasprintf("Flags allowed only with \"snat\" or \"dnat\"."); | |
5507 | } | |
5508 | if (on->range_af != AF_UNSPEC) { | |
5509 | return xasprintf("Range allowed only with \"snat\" or \"dnat\"."); | |
5510 | } | |
5511 | } | |
5512 | return NULL; | |
5513 | } | |
5514 | ||
d4abaff5 | 5515 | \f |
c2d936a4 BP |
5516 | /* Meter instruction. */ |
5517 | ||
5518 | static void | |
5519 | encode_METER(const struct ofpact_meter *meter, | |
5520 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5521 | { | |
5522 | if (ofp_version >= OFP13_VERSION) { | |
5523 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
5524 | } | |
5525 | } | |
5526 | ||
cab50449 | 5527 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5528 | parse_METER(char *arg, struct ofpbuf *ofpacts, |
5529 | enum ofputil_protocol *usable_protocols) | |
5530 | { | |
5531 | *usable_protocols &= OFPUTIL_P_OF13_UP; | |
5532 | return str_to_u32(arg, &ofpact_put_METER(ofpacts)->meter_id); | |
5533 | } | |
5534 | ||
5535 | static void | |
5536 | format_METER(const struct ofpact_meter *a, struct ds *s) | |
5537 | { | |
b1c5bf1f QM |
5538 | ds_put_format(s, "%smeter:%s%"PRIu32, |
5539 | colors.param, colors.end, a->meter_id); | |
c2d936a4 BP |
5540 | } |
5541 | \f | |
5542 | /* Clear-Actions instruction. */ | |
5543 | ||
5544 | static void | |
5545 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
5546 | enum ofp_version ofp_version OVS_UNUSED, | |
5547 | struct ofpbuf *out OVS_UNUSED) | |
5548 | { | |
5549 | if (ofp_version > OFP10_VERSION) { | |
5550 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
5551 | } | |
5552 | } | |
5553 | ||
cab50449 | 5554 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5555 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
5556 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5557 | { | |
5558 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
5559 | return NULL; | |
5560 | } | |
5561 | ||
5562 | static void | |
5563 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
5564 | { | |
b1c5bf1f | 5565 | ds_put_format(s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 BP |
5566 | } |
5567 | \f | |
5568 | /* Write-Actions instruction. */ | |
5569 | ||
5570 | static void | |
5571 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
5572 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5573 | { | |
5574 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 5575 | const size_t ofs = out->size; |
c2d936a4 BP |
5576 | |
5577 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
5578 | ofpacts_put_openflow_actions(actions->actions, | |
5579 | ofpact_nest_get_action_len(actions), | |
5580 | out, ofp_version); | |
5581 | ofpacts_update_instruction_actions(out, ofs); | |
5582 | } | |
5583 | } | |
5584 | ||
cab50449 | 5585 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5586 | parse_WRITE_ACTIONS(char *arg, struct ofpbuf *ofpacts, |
5587 | enum ofputil_protocol *usable_protocols) | |
5588 | { | |
d824b5b7 | 5589 | size_t ofs = ofpacts_pull(ofpacts); |
c2d936a4 BP |
5590 | struct ofpact_nest *on; |
5591 | char *error; | |
c2d936a4 BP |
5592 | |
5593 | /* Add a Write-Actions instruction and then pull it off. */ | |
5594 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); | |
5595 | ofpbuf_pull(ofpacts, sizeof *on); | |
5596 | ||
5597 | /* Parse nested actions. | |
5598 | * | |
5599 | * We pulled off "write-actions" and the previous actions because the | |
5600 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
5601 | * that it doesn't actually include the nested actions. That means that | |
5602 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
5603 | * follows a Write-Actions, which is an invalid order. */ | |
d824b5b7 JS |
5604 | error = ofpacts_parse(arg, ofpacts, usable_protocols, false, |
5605 | OFPACT_WRITE_ACTIONS); | |
c2d936a4 BP |
5606 | |
5607 | /* Put the Write-Actions back on and update its length. */ | |
5608 | on = ofpbuf_push_uninit(ofpacts, sizeof *on); | |
6fd6ed71 | 5609 | on->ofpact.len = ofpacts->size; |
c2d936a4 BP |
5610 | |
5611 | /* Put any previous actions or instructions back on. */ | |
5612 | ofpbuf_push_uninit(ofpacts, ofs); | |
5613 | ||
5614 | return error; | |
5615 | } | |
5616 | ||
5617 | static void | |
5618 | format_WRITE_ACTIONS(const struct ofpact_nest *a, struct ds *s) | |
5619 | { | |
b1c5bf1f | 5620 | ds_put_format(s, "%swrite_actions(%s", colors.paren, colors.end); |
c2d936a4 | 5621 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), s); |
b1c5bf1f | 5622 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
5623 | } |
5624 | \f | |
5625 | /* Action structure for NXAST_WRITE_METADATA. | |
5626 | * | |
5627 | * Modifies the 'mask' bits of the metadata value. */ | |
5628 | struct nx_action_write_metadata { | |
5629 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5630 | ovs_be16 len; /* Length is 32. */ | |
5631 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5632 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
5633 | uint8_t zeros[6]; /* Must be zero. */ | |
5634 | ovs_be64 metadata; /* Metadata register. */ | |
5635 | ovs_be64 mask; /* Metadata mask. */ | |
5636 | }; | |
5637 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
5638 | ||
5639 | static enum ofperr | |
5640 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 5641 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
5642 | struct ofpbuf *out) |
5643 | { | |
5644 | struct ofpact_metadata *om; | |
5645 | ||
5646 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
5647 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5648 | } | |
5649 | ||
5650 | om = ofpact_put_WRITE_METADATA(out); | |
5651 | om->metadata = nawm->metadata; | |
5652 | om->mask = nawm->mask; | |
5653 | ||
5654 | return 0; | |
5655 | } | |
5656 | ||
5657 | static void | |
5658 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
5659 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5660 | { | |
5661 | if (ofp_version == OFP10_VERSION) { | |
5662 | struct nx_action_write_metadata *nawm; | |
5663 | ||
5664 | nawm = put_NXAST_WRITE_METADATA(out); | |
5665 | nawm->metadata = metadata->metadata; | |
5666 | nawm->mask = metadata->mask; | |
5667 | } else { | |
5668 | struct ofp11_instruction_write_metadata *oiwm; | |
5669 | ||
5670 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
5671 | oiwm->metadata = metadata->metadata; | |
5672 | oiwm->metadata_mask = metadata->mask; | |
5673 | } | |
5674 | } | |
5675 | ||
cab50449 | 5676 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5677 | parse_WRITE_METADATA(char *arg, struct ofpbuf *ofpacts, |
5678 | enum ofputil_protocol *usable_protocols) | |
5679 | { | |
5680 | struct ofpact_metadata *om; | |
5681 | char *mask = strchr(arg, '/'); | |
5682 | ||
5683 | *usable_protocols &= OFPUTIL_P_NXM_OF11_UP; | |
5684 | ||
5685 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
5686 | if (mask) { | |
5687 | char *error; | |
5688 | ||
5689 | *mask = '\0'; | |
5690 | error = str_to_be64(mask + 1, &om->mask); | |
5691 | if (error) { | |
5692 | return error; | |
5693 | } | |
5694 | } else { | |
5695 | om->mask = OVS_BE64_MAX; | |
5696 | } | |
5697 | ||
5698 | return str_to_be64(arg, &om->metadata); | |
5699 | } | |
5700 | ||
5701 | static void | |
5702 | format_WRITE_METADATA(const struct ofpact_metadata *a, struct ds *s) | |
5703 | { | |
b1c5bf1f QM |
5704 | ds_put_format(s, "%swrite_metadata:%s%#"PRIx64, |
5705 | colors.param, colors.end, ntohll(a->metadata)); | |
c2d936a4 BP |
5706 | if (a->mask != OVS_BE64_MAX) { |
5707 | ds_put_format(s, "/%#"PRIx64, ntohll(a->mask)); | |
5708 | } | |
4cceacb9 | 5709 | } |
f25d0cf3 | 5710 | \f |
c2d936a4 | 5711 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
5712 | |
5713 | static void | |
c2d936a4 BP |
5714 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
5715 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 5716 | { |
c2d936a4 BP |
5717 | if (ofp_version == OFP10_VERSION) { |
5718 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 5719 | |
c2d936a4 BP |
5720 | nar = put_NXAST_RESUBMIT_TABLE(out); |
5721 | nar->table = goto_table->table_id; | |
5722 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
5723 | } else { | |
5724 | struct ofp11_instruction_goto_table *oigt; | |
5725 | ||
5726 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
5727 | oigt->table_id = goto_table->table_id; | |
5728 | memset(oigt->pad, 0, sizeof oigt->pad); | |
5729 | } | |
5730 | } | |
5731 | ||
cab50449 | 5732 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5733 | parse_GOTO_TABLE(char *arg, struct ofpbuf *ofpacts, |
5734 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5735 | { | |
5736 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
5737 | char *table_s = strsep(&arg, ","); | |
5738 | if (!table_s || !table_s[0]) { | |
5739 | return xstrdup("instruction goto-table needs table id"); | |
5740 | } | |
5741 | return str_to_u8(table_s, "table", &ogt->table_id); | |
5742 | } | |
5743 | ||
5744 | static void | |
5745 | format_GOTO_TABLE(const struct ofpact_goto_table *a, struct ds *s) | |
5746 | { | |
b1c5bf1f QM |
5747 | ds_put_format(s, "%sgoto_table:%s%"PRIu8, |
5748 | colors.param, colors.end, a->table_id); | |
c2d936a4 BP |
5749 | } |
5750 | \f | |
5751 | static void | |
5ad4b3f8 | 5752 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
5753 | const struct ofp_action_header *bad_action, enum ofperr error) |
5754 | { | |
5755 | if (!VLOG_DROP_WARN(&rl)) { | |
5756 | struct ds s; | |
5757 | ||
5758 | ds_init(&s); | |
5ad4b3f8 | 5759 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
5760 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
5761 | (char *)bad_action - (char *)actions, | |
5762 | ofperr_get_name(error), ds_cstr(&s)); | |
5763 | ds_destroy(&s); | |
5764 | } | |
5765 | } | |
5766 | ||
5767 | static enum ofperr | |
5768 | ofpacts_decode(const void *actions, size_t actions_len, | |
5769 | enum ofp_version ofp_version, struct ofpbuf *ofpacts) | |
5770 | { | |
0a2869d5 | 5771 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
5772 | while (openflow.size) { |
5773 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
5774 | enum ofp_raw_action_type raw; |
5775 | enum ofperr error; | |
5776 | uint64_t arg; | |
5777 | ||
5778 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
5779 | if (!error) { | |
f3cd3ac7 | 5780 | error = ofpact_decode(action, raw, ofp_version, arg, ofpacts); |
c2d936a4 BP |
5781 | } |
5782 | ||
5783 | if (error) { | |
5ad4b3f8 | 5784 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
5785 | return error; |
5786 | } | |
5787 | } | |
c2d936a4 BP |
5788 | return 0; |
5789 | } | |
5790 | ||
5791 | static enum ofperr | |
5792 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
5793 | unsigned int actions_len, | |
5794 | enum ofp_version version, | |
5795 | uint32_t allowed_ovsinsts, | |
d824b5b7 JS |
5796 | struct ofpbuf *ofpacts, |
5797 | enum ofpact_type outer_action) | |
c2d936a4 BP |
5798 | { |
5799 | const struct ofp_action_header *actions; | |
9abca1e5 | 5800 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
5801 | enum ofperr error; |
5802 | ||
c2d936a4 BP |
5803 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
5804 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
5805 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
5806 | return OFPERR_OFPBRC_BAD_LEN; | |
5807 | } | |
5808 | ||
5809 | actions = ofpbuf_try_pull(openflow, actions_len); | |
5810 | if (actions == NULL) { | |
5811 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
5812 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 5813 | actions_len, openflow->size); |
c2d936a4 BP |
5814 | return OFPERR_OFPBRC_BAD_LEN; |
5815 | } | |
5816 | ||
5817 | error = ofpacts_decode(actions, actions_len, version, ofpacts); | |
5818 | if (error) { | |
9abca1e5 | 5819 | ofpacts->size = orig_size; |
c2d936a4 BP |
5820 | return error; |
5821 | } | |
5822 | ||
d824b5b7 JS |
5823 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
5824 | outer_action); | |
c2d936a4 | 5825 | if (error) { |
9abca1e5 | 5826 | ofpacts->size = orig_size; |
c2d936a4 BP |
5827 | } |
5828 | return error; | |
5829 | } | |
5830 | ||
9abca1e5 BP |
5831 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
5832 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
5833 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
5834 | * Returns 0 if successful, otherwise an OpenFlow error. |
5835 | * | |
5836 | * Actions are processed according to their OpenFlow version which | |
5837 | * is provided in the 'version' parameter. | |
5838 | * | |
5839 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
5840 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
5841 | * function. | |
5842 | * | |
5843 | * The parsed actions are valid generically, but they may not be valid in a | |
5844 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
5845 | * generically, but specific datapaths may only support port numbers in a | |
5846 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
5847 | * valid in a specific context. */ | |
5848 | enum ofperr | |
5849 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
5850 | unsigned int actions_len, | |
5851 | enum ofp_version version, | |
5852 | struct ofpbuf *ofpacts) | |
5853 | { | |
5854 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
5855 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
d824b5b7 | 5856 | ofpacts, 0); |
c2d936a4 BP |
5857 | } |
5858 | \f | |
5859 | /* OpenFlow 1.1 actions. */ | |
5860 | ||
5861 | ||
5862 | /* True if an action sets the value of a field | |
5863 | * in a way that is compatibile with the action set. | |
1b0ee636 | 5864 | * The field can be set via either a set or a move action. |
c2d936a4 BP |
5865 | * False otherwise. */ |
5866 | static bool | |
1b0ee636 | 5867 | ofpact_is_set_or_move_action(const struct ofpact *a) |
c2d936a4 BP |
5868 | { |
5869 | switch (a->type) { | |
5870 | case OFPACT_SET_FIELD: | |
1b0ee636 | 5871 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
5872 | case OFPACT_SET_ETH_DST: |
5873 | case OFPACT_SET_ETH_SRC: | |
5874 | case OFPACT_SET_IP_DSCP: | |
5875 | case OFPACT_SET_IP_ECN: | |
5876 | case OFPACT_SET_IP_TTL: | |
5877 | case OFPACT_SET_IPV4_DST: | |
5878 | case OFPACT_SET_IPV4_SRC: | |
5879 | case OFPACT_SET_L4_DST_PORT: | |
5880 | case OFPACT_SET_L4_SRC_PORT: | |
5881 | case OFPACT_SET_MPLS_LABEL: | |
5882 | case OFPACT_SET_MPLS_TC: | |
5883 | case OFPACT_SET_MPLS_TTL: | |
5884 | case OFPACT_SET_QUEUE: | |
5885 | case OFPACT_SET_TUNNEL: | |
5886 | case OFPACT_SET_VLAN_PCP: | |
5887 | case OFPACT_SET_VLAN_VID: | |
5888 | return true; | |
5889 | case OFPACT_BUNDLE: | |
5890 | case OFPACT_CLEAR_ACTIONS: | |
07659514 | 5891 | case OFPACT_CT: |
9ac0aada | 5892 | case OFPACT_NAT: |
c2d936a4 BP |
5893 | case OFPACT_CONTROLLER: |
5894 | case OFPACT_DEC_MPLS_TTL: | |
5895 | case OFPACT_DEC_TTL: | |
5896 | case OFPACT_ENQUEUE: | |
5897 | case OFPACT_EXIT: | |
e672ff9b | 5898 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
5899 | case OFPACT_FIN_TIMEOUT: |
5900 | case OFPACT_GOTO_TABLE: | |
5901 | case OFPACT_GROUP: | |
5902 | case OFPACT_LEARN: | |
18080541 | 5903 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
5904 | case OFPACT_METER: |
5905 | case OFPACT_MULTIPATH: | |
5906 | case OFPACT_NOTE: | |
5907 | case OFPACT_OUTPUT: | |
5908 | case OFPACT_OUTPUT_REG: | |
5909 | case OFPACT_POP_MPLS: | |
5910 | case OFPACT_POP_QUEUE: | |
5911 | case OFPACT_PUSH_MPLS: | |
5912 | case OFPACT_PUSH_VLAN: | |
c2d936a4 BP |
5913 | case OFPACT_RESUBMIT: |
5914 | case OFPACT_SAMPLE: | |
5915 | case OFPACT_STACK_POP: | |
5916 | case OFPACT_STACK_PUSH: | |
5917 | case OFPACT_STRIP_VLAN: | |
5918 | case OFPACT_WRITE_ACTIONS: | |
5919 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 5920 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
5921 | return false; |
5922 | default: | |
5923 | OVS_NOT_REACHED(); | |
5924 | } | |
5925 | } | |
5926 | ||
5927 | /* True if an action is allowed in the action set. | |
5928 | * False otherwise. */ | |
5929 | static bool | |
5930 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
5931 | { | |
5932 | switch (a->type) { | |
5933 | case OFPACT_DEC_MPLS_TTL: | |
5934 | case OFPACT_DEC_TTL: | |
5935 | case OFPACT_GROUP: | |
5936 | case OFPACT_OUTPUT: | |
5937 | case OFPACT_POP_MPLS: | |
5938 | case OFPACT_PUSH_MPLS: | |
5939 | case OFPACT_PUSH_VLAN: | |
1b0ee636 | 5940 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
5941 | case OFPACT_SET_FIELD: |
5942 | case OFPACT_SET_ETH_DST: | |
5943 | case OFPACT_SET_ETH_SRC: | |
5944 | case OFPACT_SET_IP_DSCP: | |
5945 | case OFPACT_SET_IP_ECN: | |
5946 | case OFPACT_SET_IP_TTL: | |
5947 | case OFPACT_SET_IPV4_DST: | |
5948 | case OFPACT_SET_IPV4_SRC: | |
5949 | case OFPACT_SET_L4_DST_PORT: | |
5950 | case OFPACT_SET_L4_SRC_PORT: | |
5951 | case OFPACT_SET_MPLS_LABEL: | |
5952 | case OFPACT_SET_MPLS_TC: | |
5953 | case OFPACT_SET_MPLS_TTL: | |
5954 | case OFPACT_SET_QUEUE: | |
5955 | case OFPACT_SET_TUNNEL: | |
5956 | case OFPACT_SET_VLAN_PCP: | |
5957 | case OFPACT_SET_VLAN_VID: | |
5958 | case OFPACT_STRIP_VLAN: | |
5959 | return true; | |
5960 | ||
5961 | /* In general these actions are excluded because they are not part of | |
5962 | * the OpenFlow specification nor map to actions that are defined in | |
5963 | * the specification. Thus the order in which they should be applied | |
5964 | * in the action set is undefined. */ | |
5965 | case OFPACT_BUNDLE: | |
5966 | case OFPACT_CONTROLLER: | |
07659514 | 5967 | case OFPACT_CT: |
9ac0aada | 5968 | case OFPACT_NAT: |
c2d936a4 BP |
5969 | case OFPACT_ENQUEUE: |
5970 | case OFPACT_EXIT: | |
e672ff9b | 5971 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
5972 | case OFPACT_FIN_TIMEOUT: |
5973 | case OFPACT_LEARN: | |
18080541 | 5974 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
5975 | case OFPACT_MULTIPATH: |
5976 | case OFPACT_NOTE: | |
5977 | case OFPACT_OUTPUT_REG: | |
5978 | case OFPACT_POP_QUEUE: | |
c2d936a4 BP |
5979 | case OFPACT_RESUBMIT: |
5980 | case OFPACT_SAMPLE: | |
5981 | case OFPACT_STACK_POP: | |
5982 | case OFPACT_STACK_PUSH: | |
d4abaff5 | 5983 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
5984 | |
5985 | /* The action set may only include actions and thus | |
5986 | * may not include any instructions */ | |
5987 | case OFPACT_CLEAR_ACTIONS: | |
5988 | case OFPACT_GOTO_TABLE: | |
5989 | case OFPACT_METER: | |
5990 | case OFPACT_WRITE_ACTIONS: | |
5991 | case OFPACT_WRITE_METADATA: | |
5992 | return false; | |
5993 | default: | |
5994 | OVS_NOT_REACHED(); | |
5995 | } | |
f25d0cf3 BP |
5996 | } |
5997 | ||
c2d936a4 | 5998 | /* Append ofpact 'a' onto the tail of 'out' */ |
f25d0cf3 | 5999 | static void |
c2d936a4 | 6000 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) |
f25d0cf3 | 6001 | { |
c2d936a4 | 6002 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); |
f25d0cf3 BP |
6003 | } |
6004 | ||
c2d936a4 BP |
6005 | /* Copies the last ofpact whose type is 'filter' from 'in' to 'out'. */ |
6006 | static bool | |
6007 | ofpacts_copy_last(struct ofpbuf *out, const struct ofpbuf *in, | |
6008 | enum ofpact_type filter) | |
f25d0cf3 | 6009 | { |
c2d936a4 BP |
6010 | const struct ofpact *target; |
6011 | const struct ofpact *a; | |
f25d0cf3 | 6012 | |
c2d936a4 | 6013 | target = NULL; |
6fd6ed71 | 6014 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
6015 | if (a->type == filter) { |
6016 | target = a; | |
6017 | } | |
6018 | } | |
6019 | if (target) { | |
6020 | ofpact_copy(out, target); | |
f25d0cf3 | 6021 | } |
c2d936a4 | 6022 | return target != NULL; |
f25d0cf3 BP |
6023 | } |
6024 | ||
c2d936a4 BP |
6025 | /* Append all ofpacts, for which 'filter' returns true, from 'in' to 'out'. |
6026 | * The order of appended ofpacts is preserved between 'in' and 'out' */ | |
4cceacb9 | 6027 | static void |
c2d936a4 BP |
6028 | ofpacts_copy_all(struct ofpbuf *out, const struct ofpbuf *in, |
6029 | bool (*filter)(const struct ofpact *)) | |
4cceacb9 | 6030 | { |
c2d936a4 | 6031 | const struct ofpact *a; |
4cceacb9 | 6032 | |
6fd6ed71 | 6033 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
6034 | if (filter(a)) { |
6035 | ofpact_copy(out, a); | |
6036 | } | |
6037 | } | |
4cceacb9 JS |
6038 | } |
6039 | ||
c2d936a4 BP |
6040 | /* Reads 'action_set', which contains ofpacts accumulated by |
6041 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
6042 | * executed directly into 'action_list'. (These names correspond to the | |
6043 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
6044 | * | |
6045 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 6046 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
6047 | * specification. |
6048 | * | |
6049 | * Exceptions: | |
6050 | * + output action is only appended if no group action was present in 'in'. | |
6051 | * + As a simplification all set actions are copied in the order the are | |
6052 | * provided in 'in' as many set actions applied to a field has the same | |
6053 | * affect as only applying the last action that sets a field and | |
6054 | * duplicates are removed by do_xlate_actions(). | |
6055 | * This has an unwanted side-effect of compsoting multiple | |
6056 | * LOAD_REG actions that touch different regions of the same field. */ | |
6057 | void | |
6058 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
6059 | const struct ofpbuf *action_set) | |
f25d0cf3 | 6060 | { |
c2d936a4 BP |
6061 | /* The OpenFlow spec "Action Set" section specifies this order. */ |
6062 | ofpacts_copy_last(action_list, action_set, OFPACT_STRIP_VLAN); | |
6063 | ofpacts_copy_last(action_list, action_set, OFPACT_POP_MPLS); | |
6064 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_MPLS); | |
6065 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_VLAN); | |
6066 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_TTL); | |
6067 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_MPLS_TTL); | |
1b0ee636 | 6068 | ofpacts_copy_all(action_list, action_set, ofpact_is_set_or_move_action); |
c2d936a4 | 6069 | ofpacts_copy_last(action_list, action_set, OFPACT_SET_QUEUE); |
f25d0cf3 | 6070 | |
c2d936a4 BP |
6071 | /* If both OFPACT_GROUP and OFPACT_OUTPUT are present, OpenFlow says that |
6072 | * we should execute only OFPACT_GROUP. | |
6073 | * | |
6074 | * If neither OFPACT_GROUP nor OFPACT_OUTPUT is present, then we can drop | |
6075 | * all the actions because there's no point in modifying a packet that will | |
6076 | * not be sent anywhere. */ | |
6077 | if (!ofpacts_copy_last(action_list, action_set, OFPACT_GROUP) && | |
2e34a6a3 SS |
6078 | !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT) && |
6079 | !ofpacts_copy_last(action_list, action_set, OFPACT_RESUBMIT)) { | |
c2d936a4 | 6080 | ofpbuf_clear(action_list); |
f25d0cf3 | 6081 | } |
f25d0cf3 BP |
6082 | } |
6083 | ||
f25d0cf3 | 6084 | |
c2d936a4 BP |
6085 | static enum ofperr |
6086 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
6087 | size_t n_in, enum ofp_version version, | |
6088 | struct ofpbuf *out) | |
c2d967a5 | 6089 | { |
c2d936a4 BP |
6090 | enum ofperr error; |
6091 | struct ofpact *a; | |
6fd6ed71 | 6092 | size_t start = out->size; |
c2d967a5 | 6093 | |
c2d936a4 | 6094 | error = ofpacts_decode(in, n_in, version, out); |
c2d967a5 | 6095 | |
c2d936a4 BP |
6096 | if (error) { |
6097 | return error; | |
6098 | } | |
6099 | ||
6fd6ed71 | 6100 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
6101 | if (!ofpact_is_allowed_in_actions_set(a)) { |
6102 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
6103 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
6104 | } |
6105 | } | |
c2d936a4 BP |
6106 | |
6107 | return 0; | |
c2d967a5 | 6108 | } |
c2d936a4 BP |
6109 | \f |
6110 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 6111 | |
c2d936a4 BP |
6112 | struct instruction_type_info { |
6113 | enum ovs_instruction_type type; | |
6114 | const char *name; | |
6115 | }; | |
6116 | ||
6117 | static const struct instruction_type_info inst_info[] = { | |
6118 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
6119 | OVS_INSTRUCTIONS | |
6120 | #undef DEFINE_INST | |
6121 | }; | |
6122 | ||
6123 | const char * | |
6124 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 6125 | { |
c2d936a4 | 6126 | return inst_info[type].name; |
f25d0cf3 BP |
6127 | } |
6128 | ||
c2d936a4 BP |
6129 | int |
6130 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 6131 | { |
c2d936a4 BP |
6132 | const struct instruction_type_info *p; |
6133 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
6134 | if (!strcasecmp(name, p->name)) { | |
6135 | return p->type; | |
6136 | } | |
6137 | } | |
6138 | return -1; | |
29089a54 RL |
6139 | } |
6140 | ||
c2d936a4 BP |
6141 | enum ovs_instruction_type |
6142 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 6143 | { |
c2d936a4 BP |
6144 | switch (type) { |
6145 | case OFPACT_METER: | |
6146 | return OVSINST_OFPIT13_METER; | |
6147 | case OFPACT_CLEAR_ACTIONS: | |
6148 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
6149 | case OFPACT_WRITE_ACTIONS: | |
6150 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
6151 | case OFPACT_WRITE_METADATA: | |
6152 | return OVSINST_OFPIT11_WRITE_METADATA; | |
6153 | case OFPACT_GOTO_TABLE: | |
6154 | return OVSINST_OFPIT11_GOTO_TABLE; | |
6155 | case OFPACT_OUTPUT: | |
6156 | case OFPACT_GROUP: | |
f25d0cf3 | 6157 | case OFPACT_CONTROLLER: |
c2d936a4 | 6158 | case OFPACT_ENQUEUE: |
f25d0cf3 | 6159 | case OFPACT_OUTPUT_REG: |
f25d0cf3 | 6160 | case OFPACT_BUNDLE: |
c2d936a4 BP |
6161 | case OFPACT_SET_VLAN_VID: |
6162 | case OFPACT_SET_VLAN_PCP: | |
6163 | case OFPACT_STRIP_VLAN: | |
6164 | case OFPACT_PUSH_VLAN: | |
6165 | case OFPACT_SET_ETH_SRC: | |
6166 | case OFPACT_SET_ETH_DST: | |
6167 | case OFPACT_SET_IPV4_SRC: | |
6168 | case OFPACT_SET_IPV4_DST: | |
6169 | case OFPACT_SET_IP_DSCP: | |
6170 | case OFPACT_SET_IP_ECN: | |
6171 | case OFPACT_SET_IP_TTL: | |
6172 | case OFPACT_SET_L4_SRC_PORT: | |
6173 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 6174 | case OFPACT_REG_MOVE: |
c2d936a4 | 6175 | case OFPACT_SET_FIELD: |
bd85dac1 | 6176 | case OFPACT_STACK_PUSH: |
bd85dac1 | 6177 | case OFPACT_STACK_POP: |
f25d0cf3 | 6178 | case OFPACT_DEC_TTL: |
097d4939 | 6179 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 6180 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 6181 | case OFPACT_SET_MPLS_TTL: |
b676167a | 6182 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
6183 | case OFPACT_PUSH_MPLS: |
6184 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 6185 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
6186 | case OFPACT_SET_QUEUE: |
6187 | case OFPACT_POP_QUEUE: | |
6188 | case OFPACT_FIN_TIMEOUT: | |
6189 | case OFPACT_RESUBMIT: | |
6190 | case OFPACT_LEARN: | |
18080541 | 6191 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6192 | case OFPACT_MULTIPATH: |
6193 | case OFPACT_NOTE: | |
6194 | case OFPACT_EXIT: | |
e672ff9b | 6195 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 6196 | case OFPACT_SAMPLE: |
d4abaff5 | 6197 | case OFPACT_DEBUG_RECIRC: |
07659514 | 6198 | case OFPACT_CT: |
9ac0aada | 6199 | case OFPACT_NAT: |
c2d936a4 BP |
6200 | default: |
6201 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
6202 | } | |
6203 | } | |
6204 | ||
6205 | enum ofperr | |
6206 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
6207 | const uint16_t inst_type) | |
6208 | { | |
6209 | switch (inst_type) { | |
6210 | ||
6211 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
6212 | case ENUM: \ | |
6213 | *instruction_type = OVSINST_##ENUM; \ | |
6214 | return 0; | |
6215 | OVS_INSTRUCTIONS | |
6216 | #undef DEFINE_INST | |
6217 | ||
6218 | default: | |
6219 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
6220 | } | |
6221 | } | |
6222 | ||
6223 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
6224 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
6225 | struct ovsinst_map { | |
6226 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
6227 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
6228 | }; | |
6229 | ||
6230 | static const struct ovsinst_map * | |
6231 | get_ovsinst_map(enum ofp_version version) | |
6232 | { | |
6233 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
6234 | static const struct ovsinst_map of11[] = { | |
6235 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
6236 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
6237 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
6238 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
6239 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
6240 | { 0, -1 }, | |
6241 | }; | |
f25d0cf3 | 6242 | |
c2d936a4 BP |
6243 | /* OpenFlow 1.3+ instructions. */ |
6244 | static const struct ovsinst_map of13[] = { | |
6245 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
6246 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
6247 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
6248 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
6249 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
6250 | { OVSINST_OFPIT13_METER, 6 }, | |
6251 | { 0, -1 }, | |
6252 | }; | |
4cceacb9 | 6253 | |
c2d936a4 BP |
6254 | return version < OFP13_VERSION ? of11 : of13; |
6255 | } | |
f25d0cf3 | 6256 | |
c2d936a4 BP |
6257 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
6258 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
6259 | * (OFP11_VERSION or later), and returns the result. */ | |
6260 | ovs_be32 | |
6261 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
6262 | { | |
6263 | uint32_t ofpit_bitmap = 0; | |
6264 | const struct ovsinst_map *x; | |
f25d0cf3 | 6265 | |
c2d936a4 BP |
6266 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
6267 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
6268 | ofpit_bitmap |= 1u << x->ofpit; | |
6269 | } | |
6270 | } | |
6271 | return htonl(ofpit_bitmap); | |
6272 | } | |
f25d0cf3 | 6273 | |
c2d936a4 BP |
6274 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
6275 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
6276 | * correspond to OVSINST_* values, and returns the result. */ | |
6277 | uint32_t | |
6278 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
6279 | { | |
6280 | uint32_t ovsinst_bitmap = 0; | |
6281 | const struct ovsinst_map *x; | |
f25d0cf3 | 6282 | |
c2d936a4 BP |
6283 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
6284 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
6285 | ovsinst_bitmap |= 1u << x->ovsinst; | |
6286 | } | |
6287 | } | |
6288 | return ovsinst_bitmap; | |
6289 | } | |
f25d0cf3 | 6290 | |
c2d936a4 BP |
6291 | static inline struct ofp11_instruction * |
6292 | instruction_next(const struct ofp11_instruction *inst) | |
6293 | { | |
6294 | return ((struct ofp11_instruction *) (void *) | |
6295 | ((uint8_t *) inst + ntohs(inst->len))); | |
6296 | } | |
f25d0cf3 | 6297 | |
c2d936a4 BP |
6298 | static inline bool |
6299 | instruction_is_valid(const struct ofp11_instruction *inst, | |
6300 | size_t n_instructions) | |
6301 | { | |
6302 | uint16_t len = ntohs(inst->len); | |
6303 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
6304 | && len >= sizeof *inst | |
6305 | && len / sizeof *inst <= n_instructions); | |
6306 | } | |
f25d0cf3 | 6307 | |
c2d936a4 BP |
6308 | /* This macro is careful to check for instructions with bad lengths. */ |
6309 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
6310 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
6311 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
6312 | ((LEFT) -= (ntohs((ITER)->len) \ | |
6313 | / sizeof(struct ofp11_instruction)), \ | |
6314 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 6315 | |
c2d936a4 BP |
6316 | static enum ofperr |
6317 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
6318 | enum ovs_instruction_type *type) | |
6319 | { | |
6320 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 6321 | |
c2d936a4 BP |
6322 | switch (inst->type) { |
6323 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
6324 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 6325 | |
c2d936a4 BP |
6326 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
6327 | case CONSTANT_HTONS(ENUM): \ | |
6328 | if (EXTENSIBLE \ | |
6329 | ? len >= sizeof(struct STRUCT) \ | |
6330 | : len == sizeof(struct STRUCT)) { \ | |
6331 | *type = OVSINST_##ENUM; \ | |
6332 | return 0; \ | |
6333 | } else { \ | |
6334 | return OFPERR_OFPBIC_BAD_LEN; \ | |
6335 | } | |
6336 | OVS_INSTRUCTIONS | |
6337 | #undef DEFINE_INST | |
29089a54 | 6338 | |
c2d936a4 BP |
6339 | default: |
6340 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
6341 | } |
6342 | } | |
f25d0cf3 | 6343 | |
c2d936a4 BP |
6344 | static enum ofperr |
6345 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
6346 | size_t n_insts, | |
6347 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 6348 | { |
c2d936a4 BP |
6349 | const struct ofp11_instruction *inst; |
6350 | size_t left; | |
f25d0cf3 | 6351 | |
c2d936a4 BP |
6352 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
6353 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
6354 | enum ovs_instruction_type type; | |
6355 | enum ofperr error; | |
f25d0cf3 | 6356 | |
c2d936a4 BP |
6357 | error = decode_openflow11_instruction(inst, &type); |
6358 | if (error) { | |
6359 | return error; | |
6360 | } | |
f25d0cf3 | 6361 | |
c2d936a4 BP |
6362 | if (out[type]) { |
6363 | return OFPERR_OFPBIC_DUP_INST; | |
6364 | } | |
6365 | out[type] = inst; | |
6366 | } | |
6367 | ||
6368 | if (left) { | |
6369 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
6370 | (n_insts - left) * sizeof *inst); | |
6371 | return OFPERR_OFPBIC_BAD_LEN; | |
6372 | } | |
6373 | return 0; | |
f25d0cf3 BP |
6374 | } |
6375 | ||
6376 | static void | |
c2d936a4 BP |
6377 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
6378 | const struct ofp_action_header **actions, | |
6379 | size_t *actions_len) | |
f25d0cf3 | 6380 | { |
c2d936a4 BP |
6381 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
6382 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
6383 | } | |
f25d0cf3 | 6384 | |
c2d936a4 BP |
6385 | enum ofperr |
6386 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
6387 | unsigned int instructions_len, | |
6388 | enum ofp_version version, | |
6389 | struct ofpbuf *ofpacts) | |
6390 | { | |
6391 | const struct ofp11_instruction *instructions; | |
6392 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
6393 | enum ofperr error; | |
f25d0cf3 | 6394 | |
9abca1e5 | 6395 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
6396 | if (version == OFP10_VERSION) { |
6397 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
6398 | version, | |
6399 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
d824b5b7 | 6400 | ofpacts, 0); |
c2d936a4 | 6401 | } |
f25d0cf3 | 6402 | |
c2d936a4 BP |
6403 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
6404 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
6405 | "multiple of %d", | |
6406 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
6407 | error = OFPERR_OFPBIC_BAD_LEN; | |
6408 | goto exit; | |
6409 | } | |
f25d0cf3 | 6410 | |
c2d936a4 BP |
6411 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
6412 | if (instructions == NULL) { | |
6413 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
6414 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6415 | instructions_len, openflow->size); |
c2d936a4 BP |
6416 | error = OFPERR_OFPBIC_BAD_LEN; |
6417 | goto exit; | |
6418 | } | |
f25d0cf3 | 6419 | |
c2d936a4 BP |
6420 | error = decode_openflow11_instructions( |
6421 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
6422 | insts); | |
6423 | if (error) { | |
6424 | goto exit; | |
6425 | } | |
f25d0cf3 | 6426 | |
c2d936a4 BP |
6427 | if (insts[OVSINST_OFPIT13_METER]) { |
6428 | const struct ofp13_instruction_meter *oim; | |
6429 | struct ofpact_meter *om; | |
f25d0cf3 | 6430 | |
c2d936a4 BP |
6431 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
6432 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 6433 | |
c2d936a4 BP |
6434 | om = ofpact_put_METER(ofpacts); |
6435 | om->meter_id = ntohl(oim->meter_id); | |
6436 | } | |
6437 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
6438 | const struct ofp_action_header *actions; | |
6439 | size_t actions_len; | |
f25d0cf3 | 6440 | |
c2d936a4 BP |
6441 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
6442 | &actions, &actions_len); | |
6443 | error = ofpacts_decode(actions, actions_len, version, ofpacts); | |
6444 | if (error) { | |
6445 | goto exit; | |
6446 | } | |
6447 | } | |
6448 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
6449 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
6450 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
6451 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
6452 | } | |
6453 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
6454 | struct ofpact_nest *on; | |
6455 | const struct ofp_action_header *actions; | |
6456 | size_t actions_len; | |
2bd318de | 6457 | size_t start = ofpacts->size; |
255a54ea BP |
6458 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
6459 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
6460 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
6461 | &actions, &actions_len); | |
6462 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
6463 | version, ofpacts); | |
6464 | if (error) { | |
6465 | goto exit; | |
6466 | } | |
6467 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 6468 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
6469 | } |
6470 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
6471 | const struct ofp11_instruction_write_metadata *oiwm; | |
6472 | struct ofpact_metadata *om; | |
ca287d20 | 6473 | |
c2d936a4 BP |
6474 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
6475 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 6476 | |
c2d936a4 BP |
6477 | om = ofpact_put_WRITE_METADATA(ofpacts); |
6478 | om->metadata = oiwm->metadata; | |
6479 | om->mask = oiwm->metadata_mask; | |
6480 | } | |
6481 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
6482 | const struct ofp11_instruction_goto_table *oigt; | |
6483 | struct ofpact_goto_table *ogt; | |
7395c052 | 6484 | |
c2d936a4 BP |
6485 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
6486 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
6487 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
6488 | ogt->table_id = oigt->table_id; | |
6489 | } | |
e3f8f887 | 6490 | |
6fd6ed71 | 6491 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 6492 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
6493 | exit: |
6494 | if (error) { | |
6495 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 6496 | } |
c2d936a4 | 6497 | return error; |
f25d0cf3 | 6498 | } |
d01c980f | 6499 | |
c2d936a4 BP |
6500 | /* Update the length of the instruction that begins at offset 'ofs' within |
6501 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
6502 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 6503 | static void |
c2d936a4 | 6504 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 6505 | { |
c2d936a4 | 6506 | struct ofp11_instruction_actions *oia; |
d01c980f | 6507 | |
c2d936a4 | 6508 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
6509 | if (openflow->size > ofs + sizeof *oia) { |
6510 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 6511 | } else { |
6fd6ed71 | 6512 | openflow->size = ofs; |
c2d936a4 | 6513 | } |
d01c980f | 6514 | } |
c2d936a4 BP |
6515 | \f |
6516 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
6517 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
6518 | * valid, otherwise an OpenFlow error code. */ | |
6519 | enum ofperr | |
6520 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 6521 | { |
c2d936a4 BP |
6522 | switch (port) { |
6523 | case OFPP_IN_PORT: | |
6524 | case OFPP_TABLE: | |
6525 | case OFPP_NORMAL: | |
6526 | case OFPP_FLOOD: | |
6527 | case OFPP_ALL: | |
6528 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
6529 | case OFPP_LOCAL: |
6530 | return 0; | |
6531 | ||
13d2c689 BP |
6532 | case OFPP_NONE: |
6533 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
6534 | ||
c2d936a4 BP |
6535 | default: |
6536 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
6537 | return 0; | |
6538 | } | |
6539 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
6540 | } |
6541 | } | |
6542 | ||
c2d936a4 BP |
6543 | /* Removes the protocols that require consistency between match and actions |
6544 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
6545 | * | |
6546 | * (An example of an inconsistency between match and actions is a flow that | |
6547 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
6548 | * label.) */ | |
d01c980f | 6549 | static void |
c2d936a4 BP |
6550 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
6551 | { | |
6552 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
6553 | } | |
6554 | ||
6555 | /* May modify flow->dl_type, flow->nw_proto and flow->vlan_tci, | |
6556 | * caller must restore them. | |
6557 | * | |
6558 | * Modifies some actions, filling in fields that could not be properly set | |
6559 | * without context. */ | |
6560 | static enum ofperr | |
6561 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, | |
6562 | struct flow *flow, ofp_port_t max_ports, | |
6563 | uint8_t table_id, uint8_t n_tables) | |
d01c980f | 6564 | { |
c2d936a4 BP |
6565 | const struct ofpact_enqueue *enqueue; |
6566 | const struct mf_field *mf; | |
6567 | ||
d01c980f BP |
6568 | switch (a->type) { |
6569 | case OFPACT_OUTPUT: | |
c2d936a4 BP |
6570 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
6571 | max_ports); | |
6572 | ||
6573 | case OFPACT_CONTROLLER: | |
6574 | return 0; | |
d01c980f BP |
6575 | |
6576 | case OFPACT_ENQUEUE: | |
c2d936a4 BP |
6577 | enqueue = ofpact_get_ENQUEUE(a); |
6578 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) | |
6579 | && enqueue->port != OFPP_IN_PORT | |
6580 | && enqueue->port != OFPP_LOCAL) { | |
6581 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
6582 | } | |
6583 | return 0; | |
6584 | ||
6585 | case OFPACT_OUTPUT_REG: | |
6586 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
6587 | ||
6588 | case OFPACT_BUNDLE: | |
6589 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
d01c980f BP |
6590 | |
6591 | case OFPACT_SET_VLAN_VID: | |
c2d936a4 BP |
6592 | /* Remember if we saw a vlan tag in the flow to aid translating to |
6593 | * OpenFlow 1.1+ if need be. */ | |
6594 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
6595 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
6596 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
6597 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
6598 | inconsistent_match(usable_protocols); | |
6599 | } | |
6600 | /* Temporary mark that we have a vlan tag. */ | |
6601 | flow->vlan_tci |= htons(VLAN_CFI); | |
6602 | return 0; | |
d01c980f BP |
6603 | |
6604 | case OFPACT_SET_VLAN_PCP: | |
c2d936a4 BP |
6605 | /* Remember if we saw a vlan tag in the flow to aid translating to |
6606 | * OpenFlow 1.1+ if need be. */ | |
6607 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
6608 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
6609 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
6610 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
6611 | inconsistent_match(usable_protocols); | |
6612 | } | |
6613 | /* Temporary mark that we have a vlan tag. */ | |
6614 | flow->vlan_tci |= htons(VLAN_CFI); | |
6615 | return 0; | |
d01c980f BP |
6616 | |
6617 | case OFPACT_STRIP_VLAN: | |
c2d936a4 BP |
6618 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { |
6619 | inconsistent_match(usable_protocols); | |
6620 | } | |
6621 | /* Temporary mark that we have no vlan tag. */ | |
6622 | flow->vlan_tci = htons(0); | |
6623 | return 0; | |
d01c980f | 6624 | |
3e34fbdd | 6625 | case OFPACT_PUSH_VLAN: |
c2d936a4 BP |
6626 | if (flow->vlan_tci & htons(VLAN_CFI)) { |
6627 | /* Multiple VLAN headers not supported. */ | |
6628 | return OFPERR_OFPBAC_BAD_TAG; | |
6629 | } | |
6630 | /* Temporary mark that we have a vlan tag. */ | |
6631 | flow->vlan_tci |= htons(VLAN_CFI); | |
6632 | return 0; | |
276c4e7a | 6633 | |
d01c980f | 6634 | case OFPACT_SET_ETH_SRC: |
d01c980f | 6635 | case OFPACT_SET_ETH_DST: |
c2d936a4 | 6636 | return 0; |
d01c980f BP |
6637 | |
6638 | case OFPACT_SET_IPV4_SRC: | |
d01c980f | 6639 | case OFPACT_SET_IPV4_DST: |
c2d936a4 BP |
6640 | if (flow->dl_type != htons(ETH_TYPE_IP)) { |
6641 | inconsistent_match(usable_protocols); | |
6642 | } | |
6643 | return 0; | |
d01c980f | 6644 | |
04f01c24 | 6645 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 6646 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 6647 | case OFPACT_SET_IP_TTL: |
7bcb1506 | 6648 | case OFPACT_DEC_TTL: |
c2d936a4 BP |
6649 | if (!is_ip_any(flow)) { |
6650 | inconsistent_match(usable_protocols); | |
6651 | } | |
6652 | return 0; | |
b02475c5 | 6653 | |
c2d936a4 | 6654 | case OFPACT_SET_L4_SRC_PORT: |
c2d936a4 | 6655 | case OFPACT_SET_L4_DST_PORT: |
b8778a0d | 6656 | if (!is_ip_any(flow) || (flow->nw_frag & FLOW_NW_FRAG_LATER) || |
c2d936a4 BP |
6657 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP |
6658 | && flow->nw_proto != IPPROTO_SCTP)) { | |
6659 | inconsistent_match(usable_protocols); | |
6660 | } | |
6661 | /* Note on which transport protocol the port numbers are set. | |
6662 | * This allows this set action to be converted to an OF1.2 set field | |
6663 | * action. */ | |
b8778a0d JR |
6664 | if (a->type == OFPACT_SET_L4_SRC_PORT) { |
6665 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
6666 | } else { | |
6667 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
6668 | } | |
c2d936a4 | 6669 | return 0; |
b02475c5 | 6670 | |
c2d936a4 BP |
6671 | case OFPACT_REG_MOVE: |
6672 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
8dd54666 | 6673 | |
e3f8f887 | 6674 | case OFPACT_SET_FIELD: |
c2d936a4 BP |
6675 | mf = ofpact_get_SET_FIELD(a)->field; |
6676 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
6677 | if (!mf_are_prereqs_ok(mf, flow) || | |
6678 | (mf->id == MFF_VLAN_VID && !(flow->vlan_tci & htons(VLAN_CFI)))) { | |
6679 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisities", | |
6680 | mf->name); | |
6681 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
6682 | } | |
6683 | /* Remember if we saw a vlan tag in the flow to aid translating to | |
6684 | * OpenFlow 1.1 if need be. */ | |
6685 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
6686 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
6687 | if (mf->id == MFF_VLAN_TCI) { | |
6688 | /* The set field may add or remove the vlan tag, | |
6689 | * Mark the status temporarily. */ | |
6690 | flow->vlan_tci = ofpact_get_SET_FIELD(a)->value.be16; | |
6691 | } | |
6692 | return 0; | |
e3f8f887 | 6693 | |
bd85dac1 | 6694 | case OFPACT_STACK_PUSH: |
c2d936a4 BP |
6695 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow); |
6696 | ||
bd85dac1 | 6697 | case OFPACT_STACK_POP: |
c2d936a4 BP |
6698 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), flow); |
6699 | ||
6700 | case OFPACT_SET_MPLS_LABEL: | |
6701 | case OFPACT_SET_MPLS_TC: | |
6702 | case OFPACT_SET_MPLS_TTL: | |
6703 | case OFPACT_DEC_MPLS_TTL: | |
6704 | if (!eth_type_mpls(flow->dl_type)) { | |
6705 | inconsistent_match(usable_protocols); | |
6706 | } | |
6707 | return 0; | |
6708 | ||
d01c980f | 6709 | case OFPACT_SET_TUNNEL: |
c2d936a4 | 6710 | case OFPACT_SET_QUEUE: |
d01c980f | 6711 | case OFPACT_POP_QUEUE: |
d01c980f | 6712 | case OFPACT_RESUBMIT: |
c2d936a4 BP |
6713 | return 0; |
6714 | ||
6715 | case OFPACT_FIN_TIMEOUT: | |
6716 | if (flow->nw_proto != IPPROTO_TCP) { | |
6717 | inconsistent_match(usable_protocols); | |
6718 | } | |
6719 | return 0; | |
6720 | ||
d01c980f | 6721 | case OFPACT_LEARN: |
c2d936a4 BP |
6722 | return learn_check(ofpact_get_LEARN(a), flow); |
6723 | ||
18080541 BP |
6724 | case OFPACT_CONJUNCTION: |
6725 | return 0; | |
6726 | ||
d01c980f | 6727 | case OFPACT_MULTIPATH: |
c2d936a4 BP |
6728 | return multipath_check(ofpact_get_MULTIPATH(a), flow); |
6729 | ||
d01c980f BP |
6730 | case OFPACT_NOTE: |
6731 | case OFPACT_EXIT: | |
c2d936a4 | 6732 | return 0; |
d01c980f | 6733 | |
c2d936a4 BP |
6734 | case OFPACT_PUSH_MPLS: |
6735 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; | |
6736 | /* The packet is now MPLS and the MPLS payload is opaque. | |
6737 | * Thus nothing can be assumed about the network protocol. | |
6738 | * Temporarily mark that we have no nw_proto. */ | |
6739 | flow->nw_proto = 0; | |
6740 | return 0; | |
1e7db674 | 6741 | |
c2d936a4 BP |
6742 | case OFPACT_POP_MPLS: |
6743 | if (!eth_type_mpls(flow->dl_type)) { | |
6744 | inconsistent_match(usable_protocols); | |
6745 | } | |
6746 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
6747 | return 0; | |
1e7db674 | 6748 | |
c2d936a4 BP |
6749 | case OFPACT_SAMPLE: |
6750 | return 0; | |
1e7db674 | 6751 | |
07659514 JS |
6752 | case OFPACT_CT: { |
6753 | struct ofpact_conntrack *oc = ofpact_get_CT(a); | |
76e3e669 | 6754 | enum ofperr err; |
07659514 JS |
6755 | |
6756 | if (!dl_type_is_ip_any(flow->dl_type) | |
6757 | || (flow->ct_state & CS_INVALID && oc->flags & NX_CT_F_COMMIT)) { | |
6758 | inconsistent_match(usable_protocols); | |
6759 | } | |
6760 | ||
6761 | if (oc->zone_src.field) { | |
6762 | return mf_check_src(&oc->zone_src, flow); | |
6763 | } | |
8e53fe8c | 6764 | |
76e3e669 JR |
6765 | err = ofpacts_check(oc->actions, ofpact_ct_get_action_len(oc), |
6766 | flow, max_ports, table_id, n_tables, | |
6767 | usable_protocols); | |
6768 | return err; | |
07659514 JS |
6769 | } |
6770 | ||
9ac0aada JR |
6771 | case OFPACT_NAT: { |
6772 | struct ofpact_nat *on = ofpact_get_NAT(a); | |
6773 | ||
6774 | if (!dl_type_is_ip_any(flow->dl_type) || | |
6775 | (on->range_af == AF_INET && flow->dl_type != htons(ETH_TYPE_IP)) || | |
6776 | (on->range_af == AF_INET6 | |
6777 | && flow->dl_type != htons(ETH_TYPE_IPV6))) { | |
6778 | inconsistent_match(usable_protocols); | |
6779 | } | |
6780 | return 0; | |
6781 | } | |
6782 | ||
c2d936a4 BP |
6783 | case OFPACT_CLEAR_ACTIONS: |
6784 | return 0; | |
1e7db674 | 6785 | |
c2d936a4 BP |
6786 | case OFPACT_WRITE_ACTIONS: { |
6787 | /* Use a temporary copy of 'usable_protocols' because we can't check | |
6788 | * consistency of an action set. */ | |
6789 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
6790 | enum ofputil_protocol p = *usable_protocols; | |
6791 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
6792 | flow, max_ports, table_id, n_tables, &p); | |
6793 | } | |
1e7db674 | 6794 | |
c2d936a4 BP |
6795 | case OFPACT_WRITE_METADATA: |
6796 | return 0; | |
1e7db674 | 6797 | |
c2d936a4 BP |
6798 | case OFPACT_METER: { |
6799 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
6800 | if (mid == 0 || mid > OFPM13_MAX) { | |
6801 | return OFPERR_OFPMMFC_INVALID_METER; | |
6802 | } | |
6803 | return 0; | |
6804 | } | |
1e7db674 | 6805 | |
c2d936a4 BP |
6806 | case OFPACT_GOTO_TABLE: { |
6807 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
6808 | if ((table_id != 255 && goto_table <= table_id) | |
6809 | || (n_tables != 255 && goto_table >= n_tables)) { | |
8c87971e | 6810 | return OFPERR_OFPBIC_BAD_TABLE_ID; |
c2d936a4 BP |
6811 | } |
6812 | return 0; | |
6813 | } | |
1e7db674 | 6814 | |
c2d936a4 BP |
6815 | case OFPACT_GROUP: |
6816 | return 0; | |
1e7db674 | 6817 | |
e672ff9b JR |
6818 | case OFPACT_UNROLL_XLATE: |
6819 | /* UNROLL is an internal action that should never be seen via | |
6820 | * OpenFlow. */ | |
6821 | return OFPERR_OFPBAC_BAD_TYPE; | |
6822 | ||
d4abaff5 BP |
6823 | case OFPACT_DEBUG_RECIRC: |
6824 | return 0; | |
6825 | ||
c2d936a4 BP |
6826 | default: |
6827 | OVS_NOT_REACHED(); | |
6828 | } | |
6829 | } | |
1e7db674 | 6830 | |
c2d936a4 BP |
6831 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
6832 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
6833 | * switch with no more than 'max_ports' ports. | |
6834 | * | |
6835 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
6836 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
6837 | * example of an inconsistency between match and actions is a flow that does | |
6838 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
6839 | * | |
6840 | * May annotate ofpacts with information gathered from the 'flow'. | |
6841 | * | |
6842 | * May temporarily modify 'flow', but restores the changes before returning. */ | |
6843 | enum ofperr | |
6844 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
6845 | struct flow *flow, ofp_port_t max_ports, | |
6846 | uint8_t table_id, uint8_t n_tables, | |
6847 | enum ofputil_protocol *usable_protocols) | |
6848 | { | |
6849 | struct ofpact *a; | |
6850 | ovs_be16 dl_type = flow->dl_type; | |
6851 | ovs_be16 vlan_tci = flow->vlan_tci; | |
6852 | uint8_t nw_proto = flow->nw_proto; | |
6853 | enum ofperr error = 0; | |
1e7db674 | 6854 | |
c2d936a4 BP |
6855 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
6856 | error = ofpact_check__(usable_protocols, a, flow, | |
6857 | max_ports, table_id, n_tables); | |
6858 | if (error) { | |
1e7db674 | 6859 | break; |
c2d936a4 BP |
6860 | } |
6861 | } | |
6862 | /* Restore fields that may have been modified. */ | |
6863 | flow->dl_type = dl_type; | |
6864 | flow->vlan_tci = vlan_tci; | |
6865 | flow->nw_proto = nw_proto; | |
6866 | return error; | |
6867 | } | |
1e7db674 | 6868 | |
c2d936a4 BP |
6869 | /* Like ofpacts_check(), but reports inconsistencies as |
6870 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
6871 | enum ofperr | |
6872 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
6873 | struct flow *flow, ofp_port_t max_ports, | |
6874 | uint8_t table_id, uint8_t n_tables, | |
6875 | enum ofputil_protocol usable_protocols) | |
6876 | { | |
6877 | enum ofputil_protocol p = usable_protocols; | |
6878 | enum ofperr error; | |
1e7db674 | 6879 | |
c2d936a4 BP |
6880 | error = ofpacts_check(ofpacts, ofpacts_len, flow, max_ports, |
6881 | table_id, n_tables, &p); | |
6882 | return (error ? error | |
6883 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
6884 | : 0); | |
6885 | } | |
097d4939 | 6886 | |
28f5311f JS |
6887 | /* Returns the destination field that 'ofpact' would write to, or NULL |
6888 | * if the action would not write to an mf_field. */ | |
6889 | const struct mf_field * | |
6890 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 6891 | { |
28f5311f JS |
6892 | if (ofpact->type == OFPACT_SET_FIELD) { |
6893 | const struct ofpact_set_field *orl; | |
8e53fe8c | 6894 | |
28f5311f | 6895 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 6896 | return orl->field; |
28f5311f JS |
6897 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
6898 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 6899 | |
28f5311f | 6900 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
6901 | return orm->dst.field; |
6902 | } | |
6903 | ||
6904 | return NULL; | |
6905 | } | |
6906 | ||
6907 | static enum ofperr | |
6908 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
6909 | { | |
6910 | VLOG_WARN("%s action doesn't support nested action %s", | |
6911 | ofpact_name(outer_action), ofpact_name(action)); | |
6912 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6913 | } | |
6914 | ||
6915 | static bool | |
6916 | field_requires_ct(enum mf_field_id field) | |
6917 | { | |
9daf2348 | 6918 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
6919 | } |
6920 | ||
6921 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
6922 | static enum ofperr |
6923 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
6924 | { | |
28f5311f | 6925 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
6926 | |
6927 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
6928 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
6929 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
6930 | } | |
9ac0aada JR |
6931 | if (a->type == OFPACT_NAT) { |
6932 | if (outer_action != OFPACT_CT) { | |
6933 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
6934 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
6935 | } | |
6936 | return 0; | |
6937 | } | |
8e53fe8c JS |
6938 | |
6939 | if (outer_action) { | |
6940 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
6941 | || outer_action == OFPACT_CT); | |
6942 | ||
6943 | if (outer_action == OFPACT_CT) { | |
6944 | if (!field) { | |
6945 | return unsupported_nesting(a->type, outer_action); | |
6946 | } else if (!field_requires_ct(field->id)) { | |
6947 | VLOG_WARN("%s action doesn't support nested modification " | |
6948 | "of %s", ofpact_name(outer_action), field->name); | |
6949 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6950 | } | |
6951 | } | |
d824b5b7 JS |
6952 | } |
6953 | ||
6954 | return 0; | |
6955 | } | |
6956 | ||
18080541 BP |
6957 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
6958 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
6959 | * vSwitch. | |
6960 | * | |
6961 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
6962 | * instructions that are allowed within 'ofpacts[]'. |
6963 | * | |
6964 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
6965 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
6966 | static enum ofperr |
6967 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 6968 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
6969 | { |
6970 | const struct ofpact *a; | |
6971 | enum ovs_instruction_type inst; | |
097d4939 | 6972 | |
c2d936a4 BP |
6973 | inst = OVSINST_OFPIT13_METER; |
6974 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
6975 | enum ovs_instruction_type next; | |
8e53fe8c | 6976 | enum ofperr error; |
1e7db674 | 6977 | |
18080541 BP |
6978 | if (a->type == OFPACT_CONJUNCTION) { |
6979 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
6980 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
6981 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
6982 | "\"note\" but not any other kind of action " | |
6983 | "(such as the \"%s\" action used here)", | |
96775a1c | 6984 | ofpact_name(a->type)); |
18080541 BP |
6985 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
6986 | } | |
6987 | } | |
6988 | return 0; | |
6989 | } | |
6990 | ||
8e53fe8c JS |
6991 | error = ofpacts_verify_nested(a, outer_action); |
6992 | if (error) { | |
6993 | return error; | |
d824b5b7 JS |
6994 | } |
6995 | ||
c2d936a4 BP |
6996 | next = ovs_instruction_type_from_ofpact_type(a->type); |
6997 | if (a > ofpacts | |
6998 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
6999 | ? next < inst | |
7000 | : next <= inst)) { | |
7001 | const char *name = ovs_instruction_name_from_type(inst); | |
7002 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 7003 | |
c2d936a4 BP |
7004 | if (next == inst) { |
7005 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
7006 | "1.1+ compatibility", name); | |
7007 | } else { | |
7008 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
7009 | "before %s, for OpenFlow 1.1+ compatibility", | |
7010 | next_name, name); | |
7011 | } | |
7012 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
7013 | } | |
7014 | if (!((1u << next) & allowed_ovsinsts)) { | |
7015 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 7016 | |
c2d936a4 BP |
7017 | VLOG_WARN("%s instruction not allowed here", name); |
7018 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 7019 | } |
c2d936a4 BP |
7020 | |
7021 | inst = next; | |
7022 | } | |
7023 | ||
7024 | return 0; | |
7025 | } | |
7026 | \f | |
7027 | /* Converting ofpacts to OpenFlow. */ | |
7028 | ||
7029 | static void | |
7030 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
7031 | struct ofpbuf *out) | |
7032 | { | |
7033 | switch (a->type) { | |
7034 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7035 | case OFPACT_##ENUM: \ | |
355ead69 GS |
7036 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
7037 | return; | |
c2d936a4 BP |
7038 | OFPACTS |
7039 | #undef OFPACT | |
7040 | default: | |
7041 | OVS_NOT_REACHED(); | |
1e7db674 | 7042 | } |
e3f8f887 JR |
7043 | } |
7044 | ||
7045 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
7046 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 7047 | * 'openflow'. */ |
a07c15bc | 7048 | size_t |
e3f8f887 JR |
7049 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
7050 | struct ofpbuf *openflow, | |
7051 | enum ofp_version ofp_version) | |
d01c980f BP |
7052 | { |
7053 | const struct ofpact *a; | |
6fd6ed71 | 7054 | size_t start_size = openflow->size; |
d01c980f BP |
7055 | |
7056 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 7057 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 7058 | } |
6fd6ed71 | 7059 | return openflow->size - start_size; |
d01c980f BP |
7060 | } |
7061 | ||
c2d936a4 BP |
7062 | static enum ovs_instruction_type |
7063 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 7064 | { |
c2d936a4 BP |
7065 | return (ovs_instruction_type_from_ofpact_type(a->type) |
7066 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 7067 | } |
8dd54666 IY |
7068 | |
7069 | void | |
e3f8f887 JR |
7070 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
7071 | size_t ofpacts_len, | |
7072 | struct ofpbuf *openflow, | |
7073 | enum ofp_version ofp_version) | |
8dd54666 | 7074 | { |
c2d936a4 | 7075 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
7076 | const struct ofpact *a; |
7077 | ||
8f2cded4 BP |
7078 | if (ofp_version == OFP10_VERSION) { |
7079 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
7080 | ofp_version); | |
7081 | return; | |
7082 | } | |
e3f8f887 | 7083 | |
c2d936a4 BP |
7084 | a = ofpacts; |
7085 | while (a < end) { | |
7086 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 7087 | size_t ofs = openflow->size; |
8dd54666 IY |
7088 | |
7089 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
7090 | do { |
7091 | encode_ofpact(a, ofp_version, openflow); | |
7092 | a = ofpact_next(a); | |
7093 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 7094 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
7095 | } else { |
7096 | encode_ofpact(a, ofp_version, openflow); | |
7097 | a = ofpact_next(a); | |
8dd54666 IY |
7098 | } |
7099 | } | |
7100 | } | |
d01c980f | 7101 | \f |
08d1e234 BP |
7102 | /* Sets of supported actions. */ |
7103 | ||
7104 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
7105 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
7106 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
7107 | * instance is specific to one OpenFlow version.) */ | |
7108 | struct ofpact_map { | |
7109 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
7110 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
7111 | }; | |
7112 | ||
7113 | static const struct ofpact_map * | |
7114 | get_ofpact_map(enum ofp_version version) | |
7115 | { | |
7116 | /* OpenFlow 1.0 actions. */ | |
7117 | static const struct ofpact_map of10[] = { | |
7118 | { OFPACT_OUTPUT, 0 }, | |
7119 | { OFPACT_SET_VLAN_VID, 1 }, | |
7120 | { OFPACT_SET_VLAN_PCP, 2 }, | |
7121 | { OFPACT_STRIP_VLAN, 3 }, | |
7122 | { OFPACT_SET_ETH_SRC, 4 }, | |
7123 | { OFPACT_SET_ETH_DST, 5 }, | |
7124 | { OFPACT_SET_IPV4_SRC, 6 }, | |
7125 | { OFPACT_SET_IPV4_DST, 7 }, | |
7126 | { OFPACT_SET_IP_DSCP, 8 }, | |
7127 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
7128 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
7129 | { OFPACT_ENQUEUE, 11 }, | |
7130 | { 0, -1 }, | |
7131 | }; | |
7132 | ||
7133 | /* OpenFlow 1.1 actions. */ | |
7134 | static const struct ofpact_map of11[] = { | |
7135 | { OFPACT_OUTPUT, 0 }, | |
7136 | { OFPACT_SET_VLAN_VID, 1 }, | |
7137 | { OFPACT_SET_VLAN_PCP, 2 }, | |
7138 | { OFPACT_SET_ETH_SRC, 3 }, | |
7139 | { OFPACT_SET_ETH_DST, 4 }, | |
7140 | { OFPACT_SET_IPV4_SRC, 5 }, | |
7141 | { OFPACT_SET_IPV4_DST, 6 }, | |
7142 | { OFPACT_SET_IP_DSCP, 7 }, | |
7143 | { OFPACT_SET_IP_ECN, 8 }, | |
7144 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
7145 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
7146 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
7147 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
7148 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
7149 | { OFPACT_SET_MPLS_TC, 14 }, | |
7150 | { OFPACT_SET_MPLS_TTL, 15 }, | |
7151 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
7152 | { OFPACT_PUSH_VLAN, 17 }, | |
7153 | { OFPACT_STRIP_VLAN, 18 }, | |
7154 | { OFPACT_PUSH_MPLS, 19 }, | |
7155 | { OFPACT_POP_MPLS, 20 }, | |
7156 | { OFPACT_SET_QUEUE, 21 }, | |
7157 | { OFPACT_GROUP, 22 }, | |
7158 | { OFPACT_SET_IP_TTL, 23 }, | |
7159 | { OFPACT_DEC_TTL, 24 }, | |
7160 | { 0, -1 }, | |
7161 | }; | |
7162 | ||
7163 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
7164 | static const struct ofpact_map of12[] = { | |
7165 | { OFPACT_OUTPUT, 0 }, | |
7166 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
7167 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
7168 | { OFPACT_SET_MPLS_TTL, 15 }, | |
7169 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
7170 | { OFPACT_PUSH_VLAN, 17 }, | |
7171 | { OFPACT_STRIP_VLAN, 18 }, | |
7172 | { OFPACT_PUSH_MPLS, 19 }, | |
7173 | { OFPACT_POP_MPLS, 20 }, | |
7174 | { OFPACT_SET_QUEUE, 21 }, | |
7175 | { OFPACT_GROUP, 22 }, | |
7176 | { OFPACT_SET_IP_TTL, 23 }, | |
7177 | { OFPACT_DEC_TTL, 24 }, | |
7178 | { OFPACT_SET_FIELD, 25 }, | |
7179 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
7180 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
7181 | { 0, -1 }, | |
7182 | }; | |
7183 | ||
7184 | switch (version) { | |
7185 | case OFP10_VERSION: | |
7186 | return of10; | |
7187 | ||
7188 | case OFP11_VERSION: | |
7189 | return of11; | |
7190 | ||
7191 | case OFP12_VERSION: | |
7192 | case OFP13_VERSION: | |
7193 | case OFP14_VERSION: | |
7194 | case OFP15_VERSION: | |
7195 | default: | |
7196 | return of12; | |
7197 | } | |
7198 | } | |
7199 | ||
7200 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
7201 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
7202 | * returns the result. */ | |
7203 | ovs_be32 | |
7204 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
7205 | { | |
7206 | uint32_t openflow_bitmap = 0; | |
7207 | const struct ofpact_map *x; | |
7208 | ||
7209 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
7210 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
7211 | openflow_bitmap |= 1u << x->ofpat; | |
7212 | } | |
7213 | } | |
7214 | return htonl(openflow_bitmap); | |
7215 | } | |
7216 | ||
7217 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
7218 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
7219 | * and returns the result. */ | |
7220 | uint64_t | |
7221 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
7222 | { | |
7223 | uint64_t ofpact_bitmap = 0; | |
7224 | const struct ofpact_map *x; | |
7225 | ||
7226 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
7227 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
7228 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
7229 | } | |
7230 | } | |
7231 | return ofpact_bitmap; | |
7232 | } | |
7233 | ||
7234 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
7235 | * by 'ofpacts_bitmap'. */ | |
7236 | void | |
7237 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
7238 | { | |
7239 | if (!ofpacts_bitmap) { | |
7240 | ds_put_cstr(s, "<none>"); | |
7241 | } else { | |
7242 | while (ofpacts_bitmap) { | |
7243 | ds_put_format(s, "%s ", | |
7244 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
7245 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
7246 | } | |
7247 | ds_chomp(s, ' '); | |
7248 | } | |
7249 | } | |
7250 | \f | |
f25d0cf3 BP |
7251 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
7252 | static bool | |
4e022ec0 | 7253 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
7254 | { |
7255 | switch (ofpact->type) { | |
7256 | case OFPACT_OUTPUT: | |
7257 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
7258 | case OFPACT_ENQUEUE: | |
7259 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
7260 | case OFPACT_CONTROLLER: | |
7261 | return port == OFPP_CONTROLLER; | |
7262 | ||
7263 | case OFPACT_OUTPUT_REG: | |
7264 | case OFPACT_BUNDLE: | |
7265 | case OFPACT_SET_VLAN_VID: | |
7266 | case OFPACT_SET_VLAN_PCP: | |
7267 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 7268 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
7269 | case OFPACT_SET_ETH_SRC: |
7270 | case OFPACT_SET_ETH_DST: | |
7271 | case OFPACT_SET_IPV4_SRC: | |
7272 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 7273 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7274 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7275 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
7276 | case OFPACT_SET_L4_SRC_PORT: |
7277 | case OFPACT_SET_L4_DST_PORT: | |
7278 | case OFPACT_REG_MOVE: | |
b2dd70be | 7279 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
7280 | case OFPACT_STACK_PUSH: |
7281 | case OFPACT_STACK_POP: | |
f25d0cf3 | 7282 | case OFPACT_DEC_TTL: |
097d4939 JR |
7283 | case OFPACT_SET_MPLS_LABEL: |
7284 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 7285 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7286 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 7287 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 7288 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
7289 | case OFPACT_SET_QUEUE: |
7290 | case OFPACT_POP_QUEUE: | |
7291 | case OFPACT_FIN_TIMEOUT: | |
7292 | case OFPACT_RESUBMIT: | |
7293 | case OFPACT_LEARN: | |
18080541 | 7294 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 7295 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
7296 | case OFPACT_NOTE: |
7297 | case OFPACT_EXIT: | |
e672ff9b | 7298 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
7299 | case OFPACT_PUSH_MPLS: |
7300 | case OFPACT_POP_MPLS: | |
29089a54 | 7301 | case OFPACT_SAMPLE: |
b19e8793 | 7302 | case OFPACT_CLEAR_ACTIONS: |
7fdb60a7 | 7303 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 7304 | case OFPACT_GOTO_TABLE: |
638a19b0 | 7305 | case OFPACT_METER: |
7395c052 | 7306 | case OFPACT_GROUP: |
d4abaff5 | 7307 | case OFPACT_DEBUG_RECIRC: |
07659514 | 7308 | case OFPACT_CT: |
9ac0aada | 7309 | case OFPACT_NAT: |
f25d0cf3 BP |
7310 | default: |
7311 | return false; | |
7312 | } | |
7313 | } | |
7314 | ||
7315 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
7316 | * to 'port', false otherwise. */ | |
7317 | bool | |
7318 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 7319 | ofp_port_t port) |
c2d936a4 BP |
7320 | { |
7321 | const struct ofpact *a; | |
f25d0cf3 | 7322 | |
4f20179d | 7323 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
7324 | if (ofpact_outputs_to_port(a, port)) { |
7325 | return true; | |
7326 | } | |
7327 | } | |
f25d0cf3 | 7328 | |
c2d936a4 BP |
7329 | return false; |
7330 | } | |
f25d0cf3 | 7331 | |
c2d936a4 BP |
7332 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
7333 | * to 'group', false otherwise. */ | |
7334 | bool | |
7335 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
7336 | uint32_t group_id) | |
7337 | { | |
7338 | const struct ofpact *a; | |
b02475c5 | 7339 | |
4f20179d | 7340 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
7341 | if (a->type == OFPACT_GROUP |
7342 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
7343 | return true; | |
7344 | } | |
7345 | } | |
b02475c5 | 7346 | |
c2d936a4 BP |
7347 | return false; |
7348 | } | |
8dd54666 | 7349 | |
c2d936a4 BP |
7350 | bool |
7351 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
7352 | const struct ofpact *b, size_t b_len) | |
7353 | { | |
7354 | return a_len == b_len && !memcmp(a, b, a_len); | |
7355 | } | |
29089a54 | 7356 | |
c2d936a4 BP |
7357 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
7358 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
7359 | * | |
7360 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
7361 | * ofpacts_verify()). */ | |
7362 | uint32_t | |
7363 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
7364 | { | |
7365 | const struct ofpact *a; | |
7fdb60a7 | 7366 | |
c2d936a4 BP |
7367 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7368 | enum ovs_instruction_type inst; | |
b19e8793 | 7369 | |
c2d936a4 BP |
7370 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
7371 | if (a->type == OFPACT_METER) { | |
7372 | return ofpact_get_METER(a)->meter_id; | |
7373 | } else if (inst > OVSINST_OFPIT13_METER) { | |
7374 | break; | |
4cceacb9 | 7375 | } |
c2d936a4 | 7376 | } |
638a19b0 | 7377 | |
c2d936a4 BP |
7378 | return 0; |
7379 | } | |
7380 | \f | |
7381 | /* Formatting ofpacts. */ | |
7395c052 | 7382 | |
c2d936a4 BP |
7383 | static void |
7384 | ofpact_format(const struct ofpact *a, struct ds *s) | |
7385 | { | |
7386 | switch (a->type) { | |
7387 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7388 | case OFPACT_##ENUM: \ | |
7389 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), s); \ | |
7390 | break; | |
7391 | OFPACTS | |
7392 | #undef OFPACT | |
7393 | default: | |
7394 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
7395 | } |
7396 | } | |
7397 | ||
7398 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
7399 | * 'ofpacts' to 'string'. */ | |
7400 | void | |
7401 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
7402 | struct ds *string) | |
7403 | { | |
f25d0cf3 | 7404 | if (!ofpacts_len) { |
b1c5bf1f | 7405 | ds_put_format(string, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
7406 | } else { |
7407 | const struct ofpact *a; | |
7408 | ||
7409 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
7410 | if (a != ofpacts) { | |
b1c5bf1f | 7411 | ds_put_char(string, ','); |
f25d0cf3 | 7412 | } |
8dd54666 | 7413 | |
5dca28b5 | 7414 | /* XXX write-actions */ |
f25d0cf3 BP |
7415 | ofpact_format(a, string); |
7416 | } | |
7417 | } | |
7418 | } | |
7419 | \f | |
7420 | /* Internal use by helpers. */ | |
7421 | ||
ce058104 | 7422 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
7423 | void * |
7424 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
7425 | { | |
7426 | struct ofpact *ofpact; | |
7427 | ||
6fd6ed71 PS |
7428 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
7429 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
7430 | ofpact_init(ofpact, type, len); |
7431 | return ofpact; | |
7432 | } | |
7433 | ||
ce058104 | 7434 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
7435 | void |
7436 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
7437 | { | |
7438 | memset(ofpact, 0, len); | |
7439 | ofpact->type = type; | |
c2d936a4 | 7440 | ofpact->raw = -1; |
f25d0cf3 BP |
7441 | ofpact->len = len; |
7442 | } | |
ce058104 BP |
7443 | |
7444 | /* Implementation of ofpact_finish_<ENUM>(). | |
7445 | * | |
7446 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
7447 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
7448 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
7449 | * the end of ofp-actions.h for more information. |
7450 | * | |
7451 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
7452 | * pointer to the return value of this function. */ | |
7453 | void * | |
34abaa3d | 7454 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 7455 | { |
5308056f JS |
7456 | ptrdiff_t len; |
7457 | ||
6fd6ed71 | 7458 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 7459 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 7460 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 7461 | ofpact->len = len; |
2bd318de | 7462 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
7463 | |
7464 | return ofpacts->header; | |
f25d0cf3 | 7465 | } |
c2d936a4 | 7466 | \f |
cab50449 | 7467 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7468 | ofpact_parse(enum ofpact_type type, char *value, struct ofpbuf *ofpacts, |
7469 | enum ofputil_protocol *usable_protocols) | |
7470 | { | |
7471 | switch (type) { | |
7472 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7473 | case OFPACT_##ENUM: \ | |
7474 | return parse_##ENUM(value, ofpacts, usable_protocols); | |
7475 | OFPACTS | |
7476 | #undef OFPACT | |
7477 | default: | |
7478 | OVS_NOT_REACHED(); | |
7479 | } | |
7480 | } | |
7481 | ||
7482 | static bool | |
7483 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
7484 | { | |
7485 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7486 | if (!strcasecmp(name, NAME)) { \ | |
7487 | *type = OFPACT_##ENUM; \ | |
7488 | return true; \ | |
7489 | } | |
7490 | OFPACTS | |
7491 | #undef OFPACT | |
7492 | ||
7493 | return false; | |
7494 | } | |
7495 | ||
7496 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
7497 | * | |
7498 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
7499 | * error. The caller is responsible for freeing the returned string. |
7500 | * | |
7501 | * If 'outer_action' is specified, indicates that the actions being parsed | |
7502 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 7503 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7504 | ofpacts_parse__(char *str, struct ofpbuf *ofpacts, |
7505 | enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 7506 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
7507 | { |
7508 | int prev_inst = -1; | |
7509 | enum ofperr retval; | |
7510 | char *key, *value; | |
7511 | bool drop = false; | |
7512 | char *pos; | |
7513 | ||
7514 | pos = str; | |
7515 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
7516 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
7517 | enum ofpact_type type; | |
7518 | char *error = NULL; | |
7519 | ofp_port_t port; | |
7520 | ||
7521 | if (ofpact_type_from_name(key, &type)) { | |
7522 | error = ofpact_parse(type, value, ofpacts, usable_protocols); | |
7523 | inst = ovs_instruction_type_from_ofpact_type(type); | |
7524 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
7525 | error = parse_set_vlan_vid(value, ofpacts, true); | |
7526 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { | |
7527 | error = parse_set_vlan_pcp(value, ofpacts, true); | |
7528 | } else if (!strcasecmp(key, "set_nw_ttl")) { | |
7529 | error = parse_SET_IP_TTL(value, ofpacts, usable_protocols); | |
7530 | } else if (!strcasecmp(key, "pop_vlan")) { | |
7531 | error = parse_pop_vlan(ofpacts); | |
7532 | } else if (!strcasecmp(key, "set_tunnel64")) { | |
7533 | error = parse_set_tunnel(value, ofpacts, | |
7534 | NXAST_RAW_SET_TUNNEL64); | |
7eb4b1f1 BP |
7535 | } else if (!strcasecmp(key, "load")) { |
7536 | error = parse_reg_load(value, ofpacts); | |
c2d936a4 BP |
7537 | } else if (!strcasecmp(key, "bundle_load")) { |
7538 | error = parse_bundle_load(value, ofpacts); | |
7539 | } else if (!strcasecmp(key, "drop")) { | |
7540 | drop = true; | |
7541 | } else if (!strcasecmp(key, "apply_actions")) { | |
7542 | return xstrdup("apply_actions is the default instruction"); | |
7543 | } else if (ofputil_port_from_string(key, &port)) { | |
7544 | ofpact_put_OUTPUT(ofpacts)->port = port; | |
7545 | } else { | |
7546 | return xasprintf("unknown action %s", key); | |
7547 | } | |
7548 | if (error) { | |
7549 | return error; | |
7550 | } | |
7551 | ||
7552 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
7553 | if (!allow_instructions) { | |
7554 | return xasprintf("only actions are allowed here (not " | |
7555 | "instruction %s)", | |
7556 | ovs_instruction_name_from_type(inst)); | |
7557 | } | |
7558 | if (inst == prev_inst) { | |
7559 | return xasprintf("instruction %s may be specified only once", | |
7560 | ovs_instruction_name_from_type(inst)); | |
7561 | } | |
7562 | } | |
7563 | if (prev_inst != -1 && inst < prev_inst) { | |
7564 | return xasprintf("instruction %s must be specified before %s", | |
7565 | ovs_instruction_name_from_type(inst), | |
7566 | ovs_instruction_name_from_type(prev_inst)); | |
7567 | } | |
7568 | prev_inst = inst; | |
7569 | } | |
c2d936a4 | 7570 | |
6fd6ed71 | 7571 | if (drop && ofpacts->size) { |
c2d936a4 BP |
7572 | return xstrdup("\"drop\" must not be accompanied by any other action " |
7573 | "or instruction"); | |
7574 | } | |
7575 | ||
6fd6ed71 | 7576 | retval = ofpacts_verify(ofpacts->data, ofpacts->size, |
c2d936a4 BP |
7577 | (allow_instructions |
7578 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
7579 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
7580 | outer_action); | |
c2d936a4 BP |
7581 | if (retval) { |
7582 | return xstrdup("Incorrect instruction ordering"); | |
7583 | } | |
7584 | ||
7585 | return NULL; | |
7586 | } | |
7587 | ||
cab50449 | 7588 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 7589 | ofpacts_parse(char *str, struct ofpbuf *ofpacts, |
d824b5b7 JS |
7590 | enum ofputil_protocol *usable_protocols, bool allow_instructions, |
7591 | enum ofpact_type outer_action) | |
c2d936a4 | 7592 | { |
6fd6ed71 | 7593 | uint32_t orig_size = ofpacts->size; |
c2d936a4 | 7594 | char *error = ofpacts_parse__(str, ofpacts, usable_protocols, |
d824b5b7 | 7595 | allow_instructions, outer_action); |
c2d936a4 | 7596 | if (error) { |
6fd6ed71 | 7597 | ofpacts->size = orig_size; |
c2d936a4 BP |
7598 | } |
7599 | return error; | |
7600 | } | |
7601 | ||
cab50449 | 7602 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7603 | ofpacts_parse_copy(const char *s_, struct ofpbuf *ofpacts, |
7604 | enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 7605 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
7606 | { |
7607 | char *error, *s; | |
7608 | ||
7609 | *usable_protocols = OFPUTIL_P_ANY; | |
7610 | ||
7611 | s = xstrdup(s_); | |
d824b5b7 JS |
7612 | error = ofpacts_parse(s, ofpacts, usable_protocols, allow_instructions, |
7613 | outer_action); | |
c2d936a4 BP |
7614 | free(s); |
7615 | ||
7616 | return error; | |
7617 | } | |
7618 | ||
7619 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
7620 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
7621 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
7622 | * |
7623 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
7624 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 7625 | char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7626 | ofpacts_parse_actions(const char *s, struct ofpbuf *ofpacts, |
7627 | enum ofputil_protocol *usable_protocols) | |
7628 | { | |
d824b5b7 | 7629 | return ofpacts_parse_copy(s, ofpacts, usable_protocols, false, 0); |
c2d936a4 BP |
7630 | } |
7631 | ||
7632 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
7633 | * 'ofpacts'. | |
7634 | * | |
7635 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
7636 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 7637 | char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7638 | ofpacts_parse_instructions(const char *s, struct ofpbuf *ofpacts, |
7639 | enum ofputil_protocol *usable_protocols) | |
7640 | { | |
d824b5b7 | 7641 | return ofpacts_parse_copy(s, ofpacts, usable_protocols, true, 0); |
c2d936a4 | 7642 | } |
08d1e234 BP |
7643 | |
7644 | const char * | |
7645 | ofpact_name(enum ofpact_type type) | |
7646 | { | |
7647 | switch (type) { | |
7648 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
7649 | OFPACTS | |
7650 | #undef OFPACT | |
7651 | } | |
7652 | return "<unknown>"; | |
7653 | } | |
c2d936a4 BP |
7654 | \f |
7655 | /* Low-level action decoding and encoding functions. */ | |
7656 | ||
7657 | /* Everything needed to identify a particular OpenFlow action. */ | |
7658 | struct ofpact_hdrs { | |
7659 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
7660 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
7661 | uint8_t ofp_version; /* From ofp_header. */ | |
7662 | }; | |
7663 | ||
7664 | /* Information about a particular OpenFlow action. */ | |
7665 | struct ofpact_raw_instance { | |
7666 | /* The action's identity. */ | |
7667 | struct ofpact_hdrs hdrs; | |
7668 | enum ofp_raw_action_type raw; | |
7669 | ||
7670 | /* Looking up the action. */ | |
7671 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
7672 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
7673 | ||
7674 | /* The action's encoded size. | |
7675 | * | |
7676 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
7677 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
7678 | * OFP_ACTION_ALIGN) == 65528. */ | |
7679 | unsigned short int min_length; | |
7680 | unsigned short int max_length; | |
7681 | ||
7682 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
7683 | * offset of that argument from the beginning of the action and 'arg_len' | |
7684 | * its length, both in bytes. | |
7685 | * | |
7686 | * For actions that take other forms, these are both zero. */ | |
7687 | unsigned short int arg_ofs; | |
7688 | unsigned short int arg_len; | |
7689 | ||
7690 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
7691 | const char *name; | |
7692 | ||
7693 | /* If this action is deprecated, a human-readable string with a brief | |
7694 | * explanation. */ | |
7695 | const char *deprecation; | |
7696 | }; | |
7697 | ||
7698 | /* Action header. */ | |
7699 | struct ofp_action_header { | |
7700 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
7701 | * version (see enum ofp_raw_action_type). | |
7702 | * | |
7703 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
7704 | * designates an OpenFlow vendor ID and that the remainder of the action | |
7705 | * structure has a vendor-defined meaning. | |
7706 | */ | |
7707 | #define OFPAT_VENDOR 0xffff | |
7708 | ovs_be16 type; | |
7709 | ||
7710 | /* Always a multiple of 8. */ | |
7711 | ovs_be16 len; | |
7712 | ||
7713 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
7714 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
7715 | ovs_be32 vendor; | |
7716 | }; | |
7717 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
7718 | ||
232c1e12 BP |
7719 | /* Header for Nicira-defined actions and for ONF vendor extensions. |
7720 | * | |
7721 | * This cannot be used as an entirely generic vendor extension action header, | |
7722 | * because OpenFlow does not specify the location or size of the action | |
7723 | * subtype; it just happens that ONF extensions and Nicira extensions share | |
7724 | * this format. */ | |
7725 | struct ext_action_header { | |
c2d936a4 BP |
7726 | ovs_be16 type; /* OFPAT_VENDOR. */ |
7727 | ovs_be16 len; /* At least 16. */ | |
232c1e12 | 7728 | ovs_be32 vendor; /* NX_VENDOR_ID or ONF_VENDOR_ID. */ |
c2d936a4 BP |
7729 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ |
7730 | uint8_t pad[6]; | |
7731 | }; | |
232c1e12 | 7732 | OFP_ASSERT(sizeof(struct ext_action_header) == 16); |
c2d936a4 BP |
7733 | |
7734 | static bool | |
7735 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
7736 | const struct ofpact_hdrs *b) | |
7737 | { | |
7738 | return (a->vendor == b->vendor | |
7739 | && a->type == b->type | |
7740 | && a->ofp_version == b->ofp_version); | |
7741 | } | |
7742 | ||
7743 | static uint32_t | |
7744 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
7745 | { | |
7746 | return hash_2words(hdrs->vendor, (hdrs->type << 16) | hdrs->ofp_version); | |
7747 | } | |
7748 | ||
7749 | #include "ofp-actions.inc2" | |
7750 | ||
7751 | static struct hmap * | |
7752 | ofpact_decode_hmap(void) | |
7753 | { | |
7754 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
7755 | static struct hmap hmap; | |
7756 | ||
7757 | if (ovsthread_once_start(&once)) { | |
7758 | struct ofpact_raw_instance *inst; | |
7759 | ||
7760 | hmap_init(&hmap); | |
7761 | for (inst = all_raw_instances; | |
7762 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
7763 | inst++) { | |
7764 | hmap_insert(&hmap, &inst->decode_node, | |
7765 | ofpact_hdrs_hash(&inst->hdrs)); | |
7766 | } | |
7767 | ovsthread_once_done(&once); | |
7768 | } | |
7769 | return &hmap; | |
7770 | } | |
7771 | ||
7772 | static struct hmap * | |
7773 | ofpact_encode_hmap(void) | |
7774 | { | |
7775 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
7776 | static struct hmap hmap; | |
7777 | ||
7778 | if (ovsthread_once_start(&once)) { | |
7779 | struct ofpact_raw_instance *inst; | |
7780 | ||
7781 | hmap_init(&hmap); | |
7782 | for (inst = all_raw_instances; | |
7783 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
7784 | inst++) { | |
7785 | hmap_insert(&hmap, &inst->encode_node, | |
7786 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
7787 | } | |
7788 | ovsthread_once_done(&once); | |
7789 | } | |
7790 | return &hmap; | |
7791 | } | |
7792 | ||
7793 | static enum ofperr | |
7794 | ofpact_decode_raw(enum ofp_version ofp_version, | |
7795 | const struct ofp_action_header *oah, size_t length, | |
7796 | const struct ofpact_raw_instance **instp) | |
7797 | { | |
7798 | const struct ofpact_raw_instance *inst; | |
7799 | struct ofpact_hdrs hdrs; | |
7800 | ||
7801 | *instp = NULL; | |
7802 | if (length < sizeof *oah) { | |
7803 | return OFPERR_OFPBAC_BAD_LEN; | |
7804 | } | |
7805 | ||
7806 | /* Get base action type. */ | |
7807 | if (oah->type == htons(OFPAT_VENDOR)) { | |
7808 | /* Get vendor. */ | |
7809 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
7810 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
7811 | /* Get extension subtype. */ | |
7812 | const struct ext_action_header *nah; | |
c2d936a4 | 7813 | |
232c1e12 | 7814 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
7815 | if (length < sizeof *nah) { |
7816 | return OFPERR_OFPBAC_BAD_LEN; | |
7817 | } | |
7818 | hdrs.type = ntohs(nah->subtype); | |
7819 | } else { | |
7820 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
7821 | hdrs.vendor); | |
7822 | return OFPERR_OFPBAC_BAD_VENDOR; | |
7823 | } | |
7824 | } else { | |
7825 | hdrs.vendor = 0; | |
7826 | hdrs.type = ntohs(oah->type); | |
7827 | } | |
7828 | ||
7829 | hdrs.ofp_version = ofp_version; | |
7830 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
7831 | ofpact_decode_hmap()) { | |
7832 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
7833 | *instp = inst; | |
7834 | return 0; | |
7835 | } | |
7836 | } | |
7837 | ||
7838 | return (hdrs.vendor | |
7839 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
7840 | : OFPERR_OFPBAC_BAD_TYPE); | |
7841 | } | |
7842 | ||
7843 | static enum ofperr | |
7844 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
7845 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
7846 | { | |
6fd6ed71 | 7847 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
7848 | const struct ofpact_raw_instance *action; |
7849 | unsigned int length; | |
7850 | enum ofperr error; | |
7851 | ||
7852 | *raw = *arg = 0; | |
6fd6ed71 | 7853 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
7854 | if (error) { |
7855 | return error; | |
7856 | } | |
7857 | ||
7858 | if (action->deprecation) { | |
7859 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
7860 | action->name, ofputil_version_to_string(ofp_version), | |
7861 | action->deprecation); | |
7862 | } | |
7863 | ||
7864 | length = ntohs(oah->len); | |
6fd6ed71 | 7865 | if (length > buf->size) { |
b153b990 | 7866 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 7867 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
7868 | return OFPERR_OFPBAC_BAD_LEN; |
7869 | } | |
c2d936a4 BP |
7870 | if (length < action->min_length || length > action->max_length) { |
7871 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
7872 | "[%hu,%hu]", action->name, length, | |
7873 | action->min_length, action->max_length); | |
7874 | return OFPERR_OFPBAC_BAD_LEN; | |
7875 | } | |
7876 | if (length % 8) { | |
7877 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
7878 | "of 8", action->name, length); | |
7879 | return OFPERR_OFPBAC_BAD_LEN; | |
7880 | } | |
7881 | ||
7882 | *raw = action->raw; | |
7883 | *arg = 0; | |
7884 | if (action->arg_len) { | |
7885 | const uint8_t *p; | |
7886 | int i; | |
7887 | ||
7888 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
7889 | for (i = 0; i < action->arg_len; i++) { | |
7890 | *arg = (*arg << 8) | p[i]; | |
7891 | } | |
7892 | } | |
7893 | ||
7894 | ofpbuf_pull(buf, length); | |
7895 | ||
7896 | return 0; | |
7897 | } | |
7898 | ||
7899 | static const struct ofpact_raw_instance * | |
7900 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
7901 | { | |
7902 | const struct ofpact_raw_instance *inst; | |
7903 | ||
7904 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
7905 | ofpact_encode_hmap()) { | |
7906 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
7907 | return inst; | |
7908 | } | |
7909 | } | |
7910 | OVS_NOT_REACHED(); | |
7911 | } | |
7912 | ||
7913 | static void * | |
7914 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
7915 | enum ofp_raw_action_type raw, uint64_t arg) | |
7916 | { | |
7917 | const struct ofpact_raw_instance *inst; | |
7918 | struct ofp_action_header *oah; | |
7919 | const struct ofpact_hdrs *hdrs; | |
7920 | ||
7921 | inst = ofpact_raw_lookup(ofp_version, raw); | |
7922 | hdrs = &inst->hdrs; | |
7923 | ||
7924 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
7925 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
7926 | oah->len = htons(inst->min_length); | |
7927 | oah->vendor = htonl(hdrs->vendor); | |
7928 | ||
7929 | switch (hdrs->vendor) { | |
7930 | case 0: | |
7931 | break; | |
7932 | ||
232c1e12 BP |
7933 | case NX_VENDOR_ID: |
7934 | case ONF_VENDOR_ID: { | |
7935 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
7936 | nah->subtype = htons(hdrs->type); |
7937 | break; | |
7938 | } | |
7939 | ||
7940 | default: | |
7941 | OVS_NOT_REACHED(); | |
7942 | } | |
7943 | ||
7944 | if (inst->arg_len) { | |
7945 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
7946 | int i; | |
7947 | ||
7948 | for (i = 0; i < inst->arg_len; i++) { | |
7949 | *--p = arg; | |
7950 | arg >>= 8; | |
7951 | } | |
7952 | } else { | |
7953 | ovs_assert(!arg); | |
7954 | } | |
7955 | ||
7956 | return oah; | |
7957 | } | |
178742f9 BP |
7958 | |
7959 | static void | |
7960 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
7961 | { | |
7962 | struct ofp_action_header *oah; | |
7963 | ||
9ac0aada JR |
7964 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
7965 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
7966 | |
7967 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 7968 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
7969 | } |
7970 |