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f25d0cf3 | 1 | /* |
72fe7578 | 2 | * Copyright (c) 2008-2017 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" |
ee89ea7b | 25 | #include "openvswitch/hmap.h" |
f25d0cf3 | 26 | #include "learn.h" |
f25d0cf3 BP |
27 | #include "multipath.h" |
28 | #include "nx-match.h" | |
9ac0aada | 29 | #include "odp-netlink.h" |
b598f214 BW |
30 | #include "openvswitch/dynamic-string.h" |
31 | #include "openvswitch/meta-flow.h" | |
32 | #include "openvswitch/ofp-actions.h" | |
f4248336 | 33 | #include "openvswitch/ofp-util.h" |
b598f214 | 34 | #include "openvswitch/ofp-parse.h" |
66bd43fa | 35 | #include "openvswitch/ofp-prop.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 | ||
aad28f47 BP |
47 | /* Header for Open vSwitch and ONF vendor extension actions. |
48 | * | |
49 | * This is the entire header for a few Open vSwitch vendor extension actions, | |
50 | * the ones that either have no arguments or for which variable-length | |
51 | * arguments follow the header. | |
52 | * | |
53 | * This cannot be used as an entirely generic vendor extension action header, | |
54 | * because OpenFlow does not specify the location or size of the action | |
55 | * subtype; it just happens that ONF extensions and Nicira extensions share | |
56 | * this format. */ | |
57 | struct ext_action_header { | |
58 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
59 | ovs_be16 len; /* At least 16. */ | |
60 | ovs_be32 vendor; /* NX_VENDOR_ID or ONF_VENDOR_ID. */ | |
61 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
62 | uint8_t pad[6]; | |
63 | }; | |
64 | OFP_ASSERT(sizeof(struct ext_action_header) == 16); | |
65 | ||
c2d936a4 BP |
66 | /* Raw identifiers for OpenFlow actions. |
67 | * | |
68 | * Decoding and encoding OpenFlow actions across multiple versions is difficult | |
69 | * to do in a clean, consistent way. This enumeration lays out all of the | |
70 | * forms of actions that Open vSwitch supports. | |
71 | * | |
72 | * The comments here must follow a stylized form because the | |
73 | * "extract-ofp-actions" program parses them at build time to generate data | |
74 | * tables. | |
75 | * | |
76 | * - The first part of each comment specifies the vendor, OpenFlow versions, | |
77 | * and type for each protocol that supports the action: | |
78 | * | |
79 | * # The vendor is OF for standard OpenFlow actions, NX for Nicira | |
80 | * extension actions. (Support for other vendors can be added, but | |
81 | * it can't be done just based on a vendor ID definition alone | |
82 | * because OpenFlow doesn't define a standard way to specify a | |
83 | * subtype for vendor actions, so other vendors might do it different | |
84 | * from Nicira.) | |
85 | * | |
86 | * # The version can specify a specific OpenFlow version, a version | |
87 | * range delimited by "-", or an open-ended range with "+". | |
88 | * | |
89 | * # The type, in parentheses, is the action type number (for standard | |
90 | * OpenFlow actions) or subtype (for vendor extension actions). | |
91 | * | |
92 | * # Optionally one may add "is deprecated" followed by a | |
93 | * human-readable reason in parentheses (which will be used in log | |
94 | * messages), if a particular action should no longer be used. | |
95 | * | |
96 | * Multiple such specifications may be separated by commas. | |
97 | * | |
98 | * - The second part describes the action's wire format. It may be: | |
99 | * | |
100 | * # "struct <name>": The struct fully specifies the wire format. The | |
101 | * action is exactly the size of the struct. (Thus, the struct must | |
102 | * be an exact multiple of 8 bytes in size.) | |
103 | * | |
104 | * # "struct <name>, ...": The struct specifies the beginning of the | |
105 | * wire format. An instance of the action is either the struct's | |
106 | * exact size, or a multiple of 8 bytes longer. | |
107 | * | |
108 | * # "uint<N>_t" or "ovs_be<N>": The action consists of a (standard or | |
109 | * vendor extension) header, followed by 0 or more pad bytes to align | |
110 | * to a multiple of <N> bits, followed by an argument of the given | |
111 | * type, followed by 0 or more pad bytes to bring the total action up | |
112 | * to a multiple of 8 bytes. | |
113 | * | |
114 | * # "void": The action is just a (standard or vendor extension) | |
115 | * header. | |
116 | * | |
117 | * - Optional additional text enclosed in square brackets is commentary for | |
118 | * the human reader. | |
119 | */ | |
120 | enum ofp_raw_action_type { | |
121 | /* ## ----------------- ## */ | |
122 | /* ## Standard actions. ## */ | |
123 | /* ## ----------------- ## */ | |
124 | ||
125 | /* OF1.0(0): struct ofp10_action_output. */ | |
126 | OFPAT_RAW10_OUTPUT, | |
127 | /* OF1.1+(0): struct ofp11_action_output. */ | |
128 | OFPAT_RAW11_OUTPUT, | |
129 | ||
130 | /* OF1.0(1): uint16_t. */ | |
131 | OFPAT_RAW10_SET_VLAN_VID, | |
132 | /* OF1.0(2): uint8_t. */ | |
133 | OFPAT_RAW10_SET_VLAN_PCP, | |
134 | ||
135 | /* OF1.1(1), OF1.2+(1) is deprecated (use Set-Field): uint16_t. | |
136 | * | |
137 | * [Semantics differ slightly between the 1.0 and 1.1 versions of the VLAN | |
138 | * modification actions: the 1.0 versions push a VLAN header if none is | |
139 | * present, but the 1.1 versions do not. That is the only reason that we | |
140 | * distinguish their raw action types.] */ | |
141 | OFPAT_RAW11_SET_VLAN_VID, | |
142 | /* OF1.1(2), OF1.2+(2) is deprecated (use Set-Field): uint8_t. */ | |
143 | OFPAT_RAW11_SET_VLAN_PCP, | |
144 | ||
145 | /* OF1.1+(17): ovs_be16. | |
146 | * | |
147 | * [The argument is the Ethertype, e.g. ETH_TYPE_VLAN_8021Q, not the VID or | |
148 | * TCI.] */ | |
149 | OFPAT_RAW11_PUSH_VLAN, | |
150 | ||
151 | /* OF1.0(3): void. */ | |
152 | OFPAT_RAW10_STRIP_VLAN, | |
153 | /* OF1.1+(18): void. */ | |
154 | OFPAT_RAW11_POP_VLAN, | |
155 | ||
156 | /* OF1.0(4), OF1.1(3), OF1.2+(3) is deprecated (use Set-Field): struct | |
157 | * ofp_action_dl_addr. */ | |
158 | OFPAT_RAW_SET_DL_SRC, | |
159 | ||
160 | /* OF1.0(5), OF1.1(4), OF1.2+(4) is deprecated (use Set-Field): struct | |
161 | * ofp_action_dl_addr. */ | |
162 | OFPAT_RAW_SET_DL_DST, | |
163 | ||
164 | /* OF1.0(6), OF1.1(5), OF1.2+(5) is deprecated (use Set-Field): | |
165 | * ovs_be32. */ | |
166 | OFPAT_RAW_SET_NW_SRC, | |
167 | ||
168 | /* OF1.0(7), OF1.1(6), OF1.2+(6) is deprecated (use Set-Field): | |
169 | * ovs_be32. */ | |
170 | OFPAT_RAW_SET_NW_DST, | |
171 | ||
172 | /* OF1.0(8), OF1.1(7), OF1.2+(7) is deprecated (use Set-Field): uint8_t. */ | |
173 | OFPAT_RAW_SET_NW_TOS, | |
174 | ||
175 | /* OF1.1(8), OF1.2+(8) is deprecated (use Set-Field): uint8_t. */ | |
176 | OFPAT_RAW11_SET_NW_ECN, | |
177 | ||
178 | /* OF1.0(9), OF1.1(9), OF1.2+(9) is deprecated (use Set-Field): | |
179 | * ovs_be16. */ | |
180 | OFPAT_RAW_SET_TP_SRC, | |
181 | ||
182 | /* OF1.0(10), OF1.1(10), OF1.2+(10) is deprecated (use Set-Field): | |
183 | * ovs_be16. */ | |
184 | OFPAT_RAW_SET_TP_DST, | |
185 | ||
186 | /* OF1.0(11): struct ofp10_action_enqueue. */ | |
187 | OFPAT_RAW10_ENQUEUE, | |
188 | ||
189 | /* NX1.0(30), OF1.1(13), OF1.2+(13) is deprecated (use Set-Field): | |
190 | * ovs_be32. */ | |
191 | OFPAT_RAW_SET_MPLS_LABEL, | |
192 | ||
193 | /* NX1.0(31), OF1.1(14), OF1.2+(14) is deprecated (use Set-Field): | |
194 | * uint8_t. */ | |
195 | OFPAT_RAW_SET_MPLS_TC, | |
196 | ||
197 | /* NX1.0(25), OF1.1(15), OF1.2+(15) is deprecated (use Set-Field): | |
198 | * uint8_t. */ | |
199 | OFPAT_RAW_SET_MPLS_TTL, | |
200 | ||
201 | /* NX1.0(26), OF1.1+(16): void. */ | |
202 | OFPAT_RAW_DEC_MPLS_TTL, | |
203 | ||
204 | /* NX1.0(23), OF1.1+(19): ovs_be16. | |
205 | * | |
206 | * [The argument is the Ethertype, e.g. ETH_TYPE_MPLS, not the label.] */ | |
207 | OFPAT_RAW_PUSH_MPLS, | |
208 | ||
209 | /* NX1.0(24), OF1.1+(20): ovs_be16. | |
210 | * | |
211 | * [The argument is the Ethertype, e.g. ETH_TYPE_IPV4 if at BoS or | |
212 | * ETH_TYPE_MPLS otherwise, not the label.] */ | |
213 | OFPAT_RAW_POP_MPLS, | |
214 | ||
215 | /* NX1.0(4), OF1.1+(21): uint32_t. */ | |
216 | OFPAT_RAW_SET_QUEUE, | |
217 | ||
88c8ca26 BP |
218 | /* NX1.0(40), OF1.1+(22): uint32_t. */ |
219 | OFPAT_RAW_GROUP, | |
c2d936a4 BP |
220 | |
221 | /* OF1.1+(23): uint8_t. */ | |
222 | OFPAT_RAW11_SET_NW_TTL, | |
223 | ||
224 | /* NX1.0(18), OF1.1+(24): void. */ | |
225 | OFPAT_RAW_DEC_NW_TTL, | |
226 | /* NX1.0+(21): struct nx_action_cnt_ids, ... */ | |
227 | NXAST_RAW_DEC_TTL_CNT_IDS, | |
228 | ||
7eb4b1f1 | 229 | /* OF1.2-1.4(25): struct ofp12_action_set_field, ... */ |
c2d936a4 | 230 | OFPAT_RAW12_SET_FIELD, |
7eb4b1f1 BP |
231 | /* OF1.5+(25): struct ofp12_action_set_field, ... */ |
232 | OFPAT_RAW15_SET_FIELD, | |
233 | /* NX1.0-1.4(7): struct nx_action_reg_load. | |
234 | * | |
235 | * [In OpenFlow 1.5, set_field is a superset of reg_load functionality, so | |
236 | * we drop reg_load.] */ | |
c2d936a4 | 237 | NXAST_RAW_REG_LOAD, |
aad28f47 | 238 | /* NX1.0-1.4(33): struct ext_action_header, ... |
bad8a439 BP |
239 | * |
240 | * [In OpenFlow 1.5, set_field is a superset of reg_load2 functionality, so | |
241 | * we drop reg_load2.] */ | |
242 | NXAST_RAW_REG_LOAD2, | |
c2d936a4 | 243 | |
f13cdd73 | 244 | /* OF1.5+(28): struct ofp15_action_copy_field, ... */ |
73178f20 | 245 | OFPAT_RAW15_COPY_FIELD, |
914624f8 BP |
246 | /* ONF1.3-1.4(3200): struct onf_action_copy_field, ... */ |
247 | ONFACT_RAW13_COPY_FIELD, | |
bad8a439 | 248 | /* NX1.0-1.4(6): struct nx_action_reg_move, ... */ |
73178f20 BP |
249 | NXAST_RAW_REG_MOVE, |
250 | ||
c2d936a4 BP |
251 | /* ## ------------------------- ## */ |
252 | /* ## Nicira extension actions. ## */ | |
253 | /* ## ------------------------- ## */ | |
254 | ||
255 | /* Actions similar to standard actions are listed with the standard actions. */ | |
256 | ||
257 | /* NX1.0+(1): uint16_t. */ | |
258 | NXAST_RAW_RESUBMIT, | |
259 | /* NX1.0+(14): struct nx_action_resubmit. */ | |
260 | NXAST_RAW_RESUBMIT_TABLE, | |
261 | ||
262 | /* NX1.0+(2): uint32_t. */ | |
263 | NXAST_RAW_SET_TUNNEL, | |
264 | /* NX1.0+(9): uint64_t. */ | |
265 | NXAST_RAW_SET_TUNNEL64, | |
266 | ||
267 | /* NX1.0+(5): void. */ | |
268 | NXAST_RAW_POP_QUEUE, | |
269 | ||
c2d936a4 BP |
270 | /* NX1.0+(8): struct nx_action_note, ... */ |
271 | NXAST_RAW_NOTE, | |
272 | ||
273 | /* NX1.0+(10): struct nx_action_multipath. */ | |
274 | NXAST_RAW_MULTIPATH, | |
275 | ||
276 | /* NX1.0+(12): struct nx_action_bundle, ... */ | |
277 | NXAST_RAW_BUNDLE, | |
278 | /* NX1.0+(13): struct nx_action_bundle, ... */ | |
279 | NXAST_RAW_BUNDLE_LOAD, | |
280 | ||
281 | /* NX1.0+(15): struct nx_action_output_reg. */ | |
282 | NXAST_RAW_OUTPUT_REG, | |
bad8a439 BP |
283 | /* NX1.0+(32): struct nx_action_output_reg2. */ |
284 | NXAST_RAW_OUTPUT_REG2, | |
c2d936a4 BP |
285 | |
286 | /* NX1.0+(16): struct nx_action_learn, ... */ | |
287 | NXAST_RAW_LEARN, | |
288 | ||
289 | /* NX1.0+(17): void. */ | |
290 | NXAST_RAW_EXIT, | |
291 | ||
292 | /* NX1.0+(19): struct nx_action_fin_timeout. */ | |
293 | NXAST_RAW_FIN_TIMEOUT, | |
294 | ||
295 | /* NX1.0+(20): struct nx_action_controller. */ | |
296 | NXAST_RAW_CONTROLLER, | |
aad28f47 | 297 | /* NX1.0+(37): struct ext_action_header, ... */ |
bdcad671 | 298 | NXAST_RAW_CONTROLLER2, |
c2d936a4 BP |
299 | |
300 | /* NX1.0+(22): struct nx_action_write_metadata. */ | |
301 | NXAST_RAW_WRITE_METADATA, | |
302 | ||
303 | /* NX1.0+(27): struct nx_action_stack. */ | |
304 | NXAST_RAW_STACK_PUSH, | |
305 | ||
306 | /* NX1.0+(28): struct nx_action_stack. */ | |
307 | NXAST_RAW_STACK_POP, | |
308 | ||
309 | /* NX1.0+(29): struct nx_action_sample. */ | |
310 | NXAST_RAW_SAMPLE, | |
f69f713b BY |
311 | /* NX1.0+(38): struct nx_action_sample2. */ |
312 | NXAST_RAW_SAMPLE2, | |
4930ea56 BP |
313 | /* NX1.0+(41): struct nx_action_sample2. */ |
314 | NXAST_RAW_SAMPLE3, | |
18080541 BP |
315 | |
316 | /* NX1.0+(34): struct nx_action_conjunction. */ | |
317 | NXAST_RAW_CONJUNCTION, | |
d4abaff5 | 318 | |
07659514 JS |
319 | /* NX1.0+(35): struct nx_action_conntrack, ... */ |
320 | NXAST_RAW_CT, | |
321 | ||
9ac0aada JR |
322 | /* NX1.0+(36): struct nx_action_nat, ... */ |
323 | NXAST_RAW_NAT, | |
324 | ||
aaca4fe0 WT |
325 | /* NX1.0+(39): struct nx_action_output_trunc. */ |
326 | NXAST_RAW_OUTPUT_TRUNC, | |
327 | ||
7ae62a67 WT |
328 | /* NX1.0+(42): struct ext_action_header, ... */ |
329 | NXAST_RAW_CLONE, | |
330 | ||
72fe7578 BP |
331 | /* NX1.0+(43): void. */ |
332 | NXAST_RAW_CT_CLEAR, | |
333 | ||
d4abaff5 BP |
334 | /* ## ------------------ ## */ |
335 | /* ## Debugging actions. ## */ | |
336 | /* ## ------------------ ## */ | |
337 | ||
338 | /* These are intentionally undocumented, subject to change, and ovs-vswitchd */ | |
339 | /* accepts them only if started with --enable-dummy. */ | |
340 | ||
341 | /* NX1.0+(255): void. */ | |
342 | NXAST_RAW_DEBUG_RECIRC, | |
c2d936a4 BP |
343 | }; |
344 | ||
345 | /* OpenFlow actions are always a multiple of 8 bytes in length. */ | |
346 | #define OFP_ACTION_ALIGN 8 | |
347 | ||
348 | /* Define a few functions for working with instructions. */ | |
349 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
350 | static inline const struct STRUCT * OVS_UNUSED \ | |
351 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
352 | { \ | |
353 | ovs_assert(inst->type == htons(ENUM)); \ | |
354 | return ALIGNED_CAST(struct STRUCT *, inst); \ | |
355 | } \ | |
356 | \ | |
357 | static inline void OVS_UNUSED \ | |
358 | instruction_init_##ENUM(struct STRUCT *s) \ | |
359 | { \ | |
360 | memset(s, 0, sizeof *s); \ | |
361 | s->type = htons(ENUM); \ | |
362 | s->len = htons(sizeof *s); \ | |
363 | } \ | |
364 | \ | |
365 | static inline struct STRUCT * OVS_UNUSED \ | |
366 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
367 | { \ | |
368 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
369 | instruction_init_##ENUM(s); \ | |
370 | return s; \ | |
371 | } | |
372 | OVS_INSTRUCTIONS | |
373 | #undef DEFINE_INST | |
374 | ||
375 | static void ofpacts_update_instruction_actions(struct ofpbuf *openflow, | |
376 | size_t ofs); | |
178742f9 | 377 | static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs); |
c2d936a4 BP |
378 | |
379 | static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len, | |
d824b5b7 JS |
380 | uint32_t allowed_ovsinsts, |
381 | enum ofpact_type outer_action); | |
c2d936a4 | 382 | |
128684a6 JR |
383 | static void put_set_field(struct ofpbuf *openflow, enum ofp_version, |
384 | enum mf_field_id, uint64_t value); | |
c2d936a4 | 385 | |
4b684612 BP |
386 | static void put_reg_load(struct ofpbuf *openflow, |
387 | const struct mf_subfield *, uint64_t value); | |
388 | ||
c2d936a4 BP |
389 | static enum ofperr ofpact_pull_raw(struct ofpbuf *, enum ofp_version, |
390 | enum ofp_raw_action_type *, uint64_t *arg); | |
391 | static void *ofpact_put_raw(struct ofpbuf *, enum ofp_version, | |
392 | enum ofp_raw_action_type, uint64_t arg); | |
393 | ||
cab50449 | 394 | static char *OVS_WARN_UNUSED_RESULT ofpacts_parse( |
c2d936a4 | 395 | char *str, struct ofpbuf *ofpacts, enum ofputil_protocol *usable_protocols, |
d824b5b7 | 396 | bool allow_instructions, enum ofpact_type outer_action); |
07659514 JS |
397 | static enum ofperr ofpacts_pull_openflow_actions__( |
398 | struct ofpbuf *openflow, unsigned int actions_len, | |
399 | enum ofp_version version, uint32_t allowed_ovsinsts, | |
400 | struct ofpbuf *ofpacts, enum ofpact_type outer_action); | |
8e53fe8c JS |
401 | static char * OVS_WARN_UNUSED_RESULT ofpacts_parse_copy( |
402 | const char *s_, struct ofpbuf *ofpacts, | |
403 | enum ofputil_protocol *usable_protocols, | |
404 | bool allow_instructions, enum ofpact_type outer_action); | |
d824b5b7 | 405 | |
4f20179d BP |
406 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
407 | * nested ofpacts it returns the first one. */ | |
408 | struct ofpact * | |
409 | ofpact_next_flattened(const struct ofpact *ofpact) | |
410 | { | |
411 | switch (ofpact->type) { | |
412 | case OFPACT_OUTPUT: | |
413 | case OFPACT_GROUP: | |
414 | case OFPACT_CONTROLLER: | |
415 | case OFPACT_ENQUEUE: | |
416 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 417 | case OFPACT_OUTPUT_TRUNC: |
4f20179d BP |
418 | case OFPACT_BUNDLE: |
419 | case OFPACT_SET_FIELD: | |
420 | case OFPACT_SET_VLAN_VID: | |
421 | case OFPACT_SET_VLAN_PCP: | |
422 | case OFPACT_STRIP_VLAN: | |
423 | case OFPACT_PUSH_VLAN: | |
424 | case OFPACT_SET_ETH_SRC: | |
425 | case OFPACT_SET_ETH_DST: | |
426 | case OFPACT_SET_IPV4_SRC: | |
427 | case OFPACT_SET_IPV4_DST: | |
428 | case OFPACT_SET_IP_DSCP: | |
429 | case OFPACT_SET_IP_ECN: | |
430 | case OFPACT_SET_IP_TTL: | |
431 | case OFPACT_SET_L4_SRC_PORT: | |
432 | case OFPACT_SET_L4_DST_PORT: | |
433 | case OFPACT_REG_MOVE: | |
434 | case OFPACT_STACK_PUSH: | |
435 | case OFPACT_STACK_POP: | |
436 | case OFPACT_DEC_TTL: | |
437 | case OFPACT_SET_MPLS_LABEL: | |
438 | case OFPACT_SET_MPLS_TC: | |
439 | case OFPACT_SET_MPLS_TTL: | |
440 | case OFPACT_DEC_MPLS_TTL: | |
441 | case OFPACT_PUSH_MPLS: | |
442 | case OFPACT_POP_MPLS: | |
443 | case OFPACT_SET_TUNNEL: | |
444 | case OFPACT_SET_QUEUE: | |
445 | case OFPACT_POP_QUEUE: | |
446 | case OFPACT_FIN_TIMEOUT: | |
447 | case OFPACT_RESUBMIT: | |
448 | case OFPACT_LEARN: | |
449 | case OFPACT_CONJUNCTION: | |
450 | case OFPACT_MULTIPATH: | |
451 | case OFPACT_NOTE: | |
452 | case OFPACT_EXIT: | |
453 | case OFPACT_SAMPLE: | |
454 | case OFPACT_UNROLL_XLATE: | |
72fe7578 | 455 | case OFPACT_CT_CLEAR: |
4f20179d BP |
456 | case OFPACT_DEBUG_RECIRC: |
457 | case OFPACT_METER: | |
458 | case OFPACT_CLEAR_ACTIONS: | |
459 | case OFPACT_WRITE_METADATA: | |
460 | case OFPACT_GOTO_TABLE: | |
461 | case OFPACT_NAT: | |
462 | return ofpact_next(ofpact); | |
463 | ||
7ae62a67 WT |
464 | case OFPACT_CLONE: |
465 | return ofpact_get_CLONE(ofpact)->actions; | |
466 | ||
4f20179d BP |
467 | case OFPACT_CT: |
468 | return ofpact_get_CT(ofpact)->actions; | |
469 | ||
470 | case OFPACT_WRITE_ACTIONS: | |
471 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
472 | } | |
473 | ||
474 | OVS_NOT_REACHED(); | |
475 | } | |
476 | ||
d824b5b7 JS |
477 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
478 | * ofpacts_parse() oblivious of actions nesting. | |
479 | * | |
480 | * Push the actions back on after nested parsing, e.g.: | |
481 | * | |
482 | * size_t ofs = ofpacts_pull(ofpacts); | |
483 | * ...nested parsing... | |
484 | * ofpbuf_push_uninit(ofpacts, ofs); | |
485 | */ | |
486 | static size_t | |
487 | ofpacts_pull(struct ofpbuf *ofpacts) | |
488 | { | |
489 | size_t ofs; | |
490 | ||
d824b5b7 JS |
491 | ofs = ofpacts->size; |
492 | ofpbuf_pull(ofpacts, ofs); | |
493 | ||
494 | return ofs; | |
495 | } | |
c2d936a4 BP |
496 | |
497 | #include "ofp-actions.inc1" | |
498 | \f | |
499 | /* Output actions. */ | |
500 | ||
501 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
502 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
503 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
504 | * packet should be sent. */ | |
505 | struct ofp10_action_output { | |
506 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
507 | ovs_be16 len; /* Length is 8. */ | |
508 | ovs_be16 port; /* Output port. */ | |
509 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 510 | }; |
c2d936a4 BP |
511 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
512 | ||
513 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
514 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
515 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
516 | * packet should be sent.*/ | |
517 | struct ofp11_action_output { | |
518 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
519 | ovs_be16 len; /* Length is 16. */ | |
520 | ovs_be32 port; /* Output port. */ | |
521 | ovs_be16 max_len; /* Max length to send to controller. */ | |
522 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
523 | }; | |
524 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 525 | |
f25d0cf3 | 526 | static enum ofperr |
c2d936a4 | 527 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 528 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 529 | struct ofpbuf *out) |
f25d0cf3 BP |
530 | { |
531 | struct ofpact_output *output; | |
532 | ||
533 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 534 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
535 | output->max_len = ntohs(oao->max_len); |
536 | ||
57ad4e9e | 537 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
538 | } |
539 | ||
540 | static enum ofperr | |
c2d936a4 | 541 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
542 | enum ofp_version ofp_version OVS_UNUSED, |
543 | struct ofpbuf *out) | |
f25d0cf3 | 544 | { |
c2d936a4 BP |
545 | struct ofpact_output *output; |
546 | enum ofperr error; | |
f25d0cf3 | 547 | |
c2d936a4 BP |
548 | output = ofpact_put_OUTPUT(out); |
549 | output->max_len = ntohs(oao->max_len); | |
550 | ||
551 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
552 | if (error) { | |
553 | return error; | |
f25d0cf3 | 554 | } |
c2d936a4 BP |
555 | |
556 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
557 | } |
558 | ||
559 | static void | |
c2d936a4 BP |
560 | encode_OUTPUT(const struct ofpact_output *output, |
561 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 562 | { |
c2d936a4 BP |
563 | if (ofp_version == OFP10_VERSION) { |
564 | struct ofp10_action_output *oao; | |
f25d0cf3 | 565 | |
c2d936a4 BP |
566 | oao = put_OFPAT10_OUTPUT(out); |
567 | oao->port = htons(ofp_to_u16(output->port)); | |
568 | oao->max_len = htons(output->max_len); | |
569 | } else { | |
570 | struct ofp11_action_output *oao; | |
571 | ||
572 | oao = put_OFPAT11_OUTPUT(out); | |
573 | oao->port = ofputil_port_to_ofp11(output->port); | |
574 | oao->max_len = htons(output->max_len); | |
575 | } | |
f25d0cf3 BP |
576 | } |
577 | ||
aaca4fe0 WT |
578 | static char * OVS_WARN_UNUSED_RESULT |
579 | parse_truncate_subfield(struct ofpact_output_trunc *output_trunc, | |
580 | const char *arg_) | |
581 | { | |
582 | char *key, *value; | |
583 | char *arg = CONST_CAST(char *, arg_); | |
584 | ||
585 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
586 | if (!strcmp(key, "port")) { | |
587 | if (!ofputil_port_from_string(value, &output_trunc->port)) { | |
588 | return xasprintf("output to unknown truncate port: %s", | |
589 | value); | |
590 | } | |
591 | if (ofp_to_u16(output_trunc->port) > ofp_to_u16(OFPP_MAX)) { | |
592 | if (output_trunc->port != OFPP_LOCAL && | |
593 | output_trunc->port != OFPP_IN_PORT) | |
594 | return xasprintf("output to unsupported truncate port: %s", | |
595 | value); | |
596 | } | |
597 | } else if (!strcmp(key, "max_len")) { | |
598 | char *err; | |
599 | ||
600 | err = str_to_u32(value, &output_trunc->max_len); | |
601 | if (err) { | |
602 | return err; | |
603 | } | |
604 | } else { | |
605 | return xasprintf("invalid key '%s' in output_trunc argument", | |
606 | key); | |
607 | } | |
608 | } | |
609 | return NULL; | |
610 | } | |
611 | ||
cab50449 | 612 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
613 | parse_OUTPUT(const char *arg, struct ofpbuf *ofpacts, |
614 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
f25d0cf3 | 615 | { |
21b2fa61 | 616 | if (strstr(arg, "port") && strstr(arg, "max_len")) { |
aaca4fe0 WT |
617 | struct ofpact_output_trunc *output_trunc; |
618 | ||
619 | output_trunc = ofpact_put_OUTPUT_TRUNC(ofpacts); | |
620 | return parse_truncate_subfield(output_trunc, arg); | |
c2d936a4 | 621 | } else { |
21b2fa61 JR |
622 | struct mf_subfield src; |
623 | char *error = mf_parse_subfield(&src, arg); | |
624 | if (!error) { | |
625 | struct ofpact_output_reg *output_reg; | |
626 | ||
627 | output_reg = ofpact_put_OUTPUT_REG(ofpacts); | |
628 | output_reg->max_len = UINT16_MAX; | |
629 | output_reg->src = src; | |
630 | } else { | |
631 | free(error); | |
632 | struct ofpact_output *output; | |
c2d936a4 | 633 | |
21b2fa61 JR |
634 | output = ofpact_put_OUTPUT(ofpacts); |
635 | if (!ofputil_port_from_string(arg, &output->port)) { | |
636 | return xasprintf("%s: output to unknown port", arg); | |
637 | } | |
638 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
c2d936a4 | 639 | } |
c2d936a4 | 640 | return NULL; |
f25d0cf3 | 641 | } |
c2d936a4 | 642 | } |
f25d0cf3 | 643 | |
c2d936a4 BP |
644 | static void |
645 | format_OUTPUT(const struct ofpact_output *a, struct ds *s) | |
646 | { | |
647 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
94783c7c | 648 | ds_put_format(s, "%soutput:%s%"PRIu32, |
b1c5bf1f | 649 | colors.special, colors.end, a->port); |
c2d936a4 BP |
650 | } else { |
651 | ofputil_format_port(a->port, s); | |
652 | if (a->port == OFPP_CONTROLLER) { | |
653 | ds_put_format(s, ":%"PRIu16, a->max_len); | |
654 | } | |
655 | } | |
f25d0cf3 | 656 | } |
c2d936a4 BP |
657 | \f |
658 | /* Group actions. */ | |
f25d0cf3 BP |
659 | |
660 | static enum ofperr | |
88c8ca26 | 661 | decode_OFPAT_RAW_GROUP(uint32_t group_id, |
f3cd3ac7 JS |
662 | enum ofp_version ofp_version OVS_UNUSED, |
663 | struct ofpbuf *out) | |
f25d0cf3 | 664 | { |
c2d936a4 BP |
665 | ofpact_put_GROUP(out)->group_id = group_id; |
666 | return 0; | |
667 | } | |
f25d0cf3 | 668 | |
c2d936a4 BP |
669 | static void |
670 | encode_GROUP(const struct ofpact_group *group, | |
671 | enum ofp_version ofp_version, struct ofpbuf *out) | |
672 | { | |
88c8ca26 | 673 | put_OFPAT_GROUP(out, ofp_version, group->group_id); |
c2d936a4 | 674 | } |
f25d0cf3 | 675 | |
cab50449 | 676 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
677 | parse_GROUP(char *arg, struct ofpbuf *ofpacts, |
678 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
679 | { | |
680 | return str_to_u32(arg, &ofpact_put_GROUP(ofpacts)->group_id); | |
f25d0cf3 BP |
681 | } |
682 | ||
683 | static void | |
c2d936a4 | 684 | format_GROUP(const struct ofpact_group *a, struct ds *s) |
f25d0cf3 | 685 | { |
b1c5bf1f QM |
686 | ds_put_format(s, "%sgroup:%s%"PRIu32, |
687 | colors.special, colors.end, a->group_id); | |
f25d0cf3 | 688 | } |
c2d936a4 BP |
689 | \f |
690 | /* Action structure for NXAST_CONTROLLER. | |
691 | * | |
692 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
693 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
694 | * specifying: | |
695 | * | |
696 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
697 | * | |
698 | * - 'controller_id': The ID of the controller connection to which the | |
699 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
700 | * sent only to controllers that have the specified controller connection | |
701 | * ID. See "struct nx_controller_id" for more information. */ | |
702 | struct nx_action_controller { | |
703 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
704 | ovs_be16 len; /* Length is 16. */ | |
705 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
706 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
707 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
708 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
709 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
710 | uint8_t zero; /* Must be zero. */ | |
711 | }; | |
712 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 713 | |
77ab5fd2 BP |
714 | /* Properties for NXAST_CONTROLLER2. |
715 | * | |
716 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
717 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
718 | enum nx_action_controller2_prop_type { |
719 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
720 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
721 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
722 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 723 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
bdcad671 BP |
724 | }; |
725 | ||
aad28f47 BP |
726 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
727 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 728 | |
c2d936a4 BP |
729 | static enum ofperr |
730 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 731 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 732 | struct ofpbuf *out) |
f25d0cf3 BP |
733 | { |
734 | struct ofpact_controller *oc; | |
735 | ||
736 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 737 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
738 | oc->max_len = ntohs(nac->max_len); |
739 | oc->controller_id = ntohs(nac->controller_id); | |
740 | oc->reason = nac->reason; | |
ce058104 | 741 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
742 | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static enum ofperr | |
aad28f47 | 747 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
748 | enum ofp_version ofp_version OVS_UNUSED, |
749 | struct ofpbuf *out) | |
750 | { | |
aad28f47 | 751 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
752 | return OFPERR_NXBRC_MUST_BE_ZERO; |
753 | } | |
754 | ||
755 | size_t start_ofs = out->size; | |
756 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
757 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
758 | oc->max_len = UINT16_MAX; | |
759 | oc->reason = OFPR_ACTION; | |
760 | ||
761 | struct ofpbuf properties; | |
aad28f47 BP |
762 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
763 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
764 | |
765 | while (properties.size > 0) { | |
766 | struct ofpbuf payload; | |
767 | uint64_t type; | |
768 | ||
769 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
770 | if (error) { | |
771 | return error; | |
772 | } | |
773 | ||
774 | switch (type) { | |
775 | case NXAC2PT_MAX_LEN: | |
776 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
777 | break; | |
778 | ||
779 | case NXAC2PT_CONTROLLER_ID: | |
780 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
781 | break; | |
782 | ||
783 | case NXAC2PT_REASON: { | |
784 | uint8_t u8; | |
785 | error = ofpprop_parse_u8(&payload, &u8); | |
786 | oc->reason = u8; | |
787 | break; | |
788 | } | |
789 | ||
790 | case NXAC2PT_USERDATA: | |
791 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
792 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
793 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
794 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
795 | break; | |
796 | ||
77ab5fd2 BP |
797 | case NXAC2PT_PAUSE: |
798 | oc->pause = true; | |
799 | break; | |
800 | ||
bdcad671 BP |
801 | default: |
802 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
803 | break; | |
804 | } | |
805 | if (error) { | |
806 | return error; | |
807 | } | |
808 | } | |
809 | ||
ce058104 | 810 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 811 | |
c2d936a4 | 812 | return 0; |
f25d0cf3 BP |
813 | } |
814 | ||
c2d936a4 BP |
815 | static void |
816 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
817 | enum ofp_version ofp_version OVS_UNUSED, | |
818 | struct ofpbuf *out) | |
4cceacb9 | 819 | { |
bdcad671 | 820 | if (controller->userdata_len |
77ab5fd2 | 821 | || controller->pause |
bdcad671 BP |
822 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
823 | size_t start_ofs = out->size; | |
824 | put_NXAST_CONTROLLER2(out); | |
825 | if (controller->max_len != UINT16_MAX) { | |
826 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
827 | } | |
828 | if (controller->controller_id != 0) { | |
829 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
830 | controller->controller_id); | |
831 | } | |
832 | if (controller->reason != OFPR_ACTION) { | |
833 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
834 | } | |
835 | if (controller->userdata_len != 0) { | |
836 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
837 | controller->userdata_len); | |
838 | } | |
77ab5fd2 BP |
839 | if (controller->pause) { |
840 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
841 | } | |
bdcad671 BP |
842 | pad_ofpat(out, start_ofs); |
843 | } else { | |
844 | struct nx_action_controller *nac; | |
4cceacb9 | 845 | |
bdcad671 BP |
846 | nac = put_NXAST_CONTROLLER(out); |
847 | nac->max_len = htons(controller->max_len); | |
848 | nac->controller_id = htons(controller->controller_id); | |
849 | nac->reason = controller->reason; | |
850 | } | |
c2d936a4 BP |
851 | } |
852 | ||
cab50449 | 853 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
854 | parse_CONTROLLER(char *arg, struct ofpbuf *ofpacts, |
855 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
856 | { | |
857 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
858 | uint16_t controller_id = 0; | |
859 | uint16_t max_len = UINT16_MAX; | |
bdcad671 | 860 | const char *userdata = NULL; |
77ab5fd2 | 861 | bool pause = false; |
c2d936a4 BP |
862 | |
863 | if (!arg[0]) { | |
864 | /* Use defaults. */ | |
865 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
866 | char *error = str_to_u16(arg, "max_len", &max_len); | |
867 | if (error) { | |
868 | return error; | |
869 | } | |
870 | } else { | |
871 | char *name, *value; | |
872 | ||
873 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
874 | if (!strcmp(name, "reason")) { | |
875 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
876 | return xasprintf("unknown reason \"%s\"", value); | |
877 | } | |
878 | } else if (!strcmp(name, "max_len")) { | |
879 | char *error = str_to_u16(value, "max_len", &max_len); | |
880 | if (error) { | |
881 | return error; | |
882 | } | |
883 | } else if (!strcmp(name, "id")) { | |
884 | char *error = str_to_u16(value, "id", &controller_id); | |
885 | if (error) { | |
886 | return error; | |
887 | } | |
bdcad671 BP |
888 | } else if (!strcmp(name, "userdata")) { |
889 | userdata = value; | |
77ab5fd2 BP |
890 | } else if (!strcmp(name, "pause")) { |
891 | pause = true; | |
c2d936a4 BP |
892 | } else { |
893 | return xasprintf("unknown key \"%s\" parsing controller " | |
894 | "action", name); | |
895 | } | |
896 | } | |
4cceacb9 JS |
897 | } |
898 | ||
77ab5fd2 | 899 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause) { |
c2d936a4 | 900 | struct ofpact_output *output; |
4cceacb9 | 901 | |
c2d936a4 BP |
902 | output = ofpact_put_OUTPUT(ofpacts); |
903 | output->port = OFPP_CONTROLLER; | |
904 | output->max_len = max_len; | |
905 | } else { | |
906 | struct ofpact_controller *controller; | |
907 | ||
908 | controller = ofpact_put_CONTROLLER(ofpacts); | |
909 | controller->max_len = max_len; | |
910 | controller->reason = reason; | |
911 | controller->controller_id = controller_id; | |
77ab5fd2 | 912 | controller->pause = pause; |
bdcad671 BP |
913 | |
914 | if (userdata) { | |
915 | size_t start_ofs = ofpacts->size; | |
916 | const char *end = ofpbuf_put_hex(ofpacts, userdata, NULL); | |
917 | if (*end) { | |
918 | return xstrdup("bad hex digit in `controller' " | |
919 | "action `userdata'"); | |
920 | } | |
921 | size_t userdata_len = ofpacts->size - start_ofs; | |
922 | controller = ofpacts->header; | |
923 | controller->userdata_len = userdata_len; | |
924 | } | |
ce058104 | 925 | ofpact_finish_CONTROLLER(ofpacts, &controller); |
c2d936a4 BP |
926 | } |
927 | ||
928 | return NULL; | |
4cceacb9 JS |
929 | } |
930 | ||
bdcad671 BP |
931 | static void |
932 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
933 | { | |
934 | for (size_t i = 0; i < len; i++) { | |
935 | if (i) { | |
936 | ds_put_char(s, '.'); | |
937 | } | |
938 | ds_put_format(s, "%02"PRIx8, data[i]); | |
939 | } | |
940 | } | |
941 | ||
f25d0cf3 | 942 | static void |
c2d936a4 | 943 | format_CONTROLLER(const struct ofpact_controller *a, struct ds *s) |
f25d0cf3 | 944 | { |
77ab5fd2 BP |
945 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
946 | && !a->pause) { | |
b1c5bf1f QM |
947 | ds_put_format(s, "%sCONTROLLER:%s%"PRIu16, |
948 | colors.special, colors.end, a->max_len); | |
c2d936a4 BP |
949 | } else { |
950 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 951 | |
b1c5bf1f | 952 | ds_put_format(s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
953 | if (reason != OFPR_ACTION) { |
954 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
955 | ||
b1c5bf1f | 956 | ds_put_format(s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
957 | ofputil_packet_in_reason_to_string( |
958 | reason, reasonbuf, sizeof reasonbuf)); | |
959 | } | |
960 | if (a->max_len != UINT16_MAX) { | |
b1c5bf1f QM |
961 | ds_put_format(s, "%smax_len=%s%"PRIu16",", |
962 | colors.param, colors.end, a->max_len); | |
c2d936a4 BP |
963 | } |
964 | if (a->controller_id != 0) { | |
b1c5bf1f QM |
965 | ds_put_format(s, "%sid=%s%"PRIu16",", |
966 | colors.param, colors.end, a->controller_id); | |
c2d936a4 | 967 | } |
bdcad671 | 968 | if (a->userdata_len) { |
b1c5bf1f | 969 | ds_put_format(s, "%suserdata=%s", colors.param, colors.end); |
bdcad671 BP |
970 | format_hex_arg(s, a->userdata, a->userdata_len); |
971 | ds_put_char(s, ','); | |
972 | } | |
77ab5fd2 | 973 | if (a->pause) { |
b1c5bf1f | 974 | ds_put_format(s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 975 | } |
c2d936a4 | 976 | ds_chomp(s, ','); |
b1c5bf1f | 977 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 | 978 | } |
f25d0cf3 | 979 | } |
c2d936a4 BP |
980 | \f |
981 | /* Enqueue action. */ | |
982 | struct ofp10_action_enqueue { | |
983 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
984 | ovs_be16 len; /* Len is 16. */ | |
985 | ovs_be16 port; /* Port that queue belongs. Should | |
986 | refer to a valid physical port | |
987 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
988 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
989 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
990 | }; | |
991 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 992 | |
c2d967a5 | 993 | static enum ofperr |
c2d936a4 | 994 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 995 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 996 | struct ofpbuf *out) |
c2d967a5 | 997 | { |
c2d936a4 | 998 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 999 | |
c2d936a4 BP |
1000 | enqueue = ofpact_put_ENQUEUE(out); |
1001 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
1002 | enqueue->queue = ntohl(oae->queue_id); | |
1003 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
1004 | && enqueue->port != OFPP_IN_PORT | |
1005 | && enqueue->port != OFPP_LOCAL) { | |
1006 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1007 | } | |
1008 | return 0; | |
c2d967a5 MM |
1009 | } |
1010 | ||
c2d936a4 BP |
1011 | static void |
1012 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1013 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1014 | { |
c2d936a4 BP |
1015 | if (ofp_version == OFP10_VERSION) { |
1016 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1017 | |
c2d936a4 BP |
1018 | oae = put_OFPAT10_ENQUEUE(out); |
1019 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1020 | oae->queue_id = htonl(enqueue->queue); | |
1021 | } else { | |
0f2aaee9 BP |
1022 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1023 | ||
1024 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1025 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1026 | oao->max_len = OVS_BE16_MAX; | |
1027 | ||
1028 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1029 | } |
c2d936a4 | 1030 | } |
c2d967a5 | 1031 | |
cab50449 | 1032 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1033 | parse_ENQUEUE(char *arg, struct ofpbuf *ofpacts, |
1034 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1035 | { | |
1036 | char *sp = NULL; | |
1037 | char *port = strtok_r(arg, ":q,", &sp); | |
1038 | char *queue = strtok_r(NULL, "", &sp); | |
1039 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1040 | |
c2d936a4 BP |
1041 | if (port == NULL || queue == NULL) { |
1042 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1043 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1044 | } |
1045 | ||
c2d936a4 BP |
1046 | enqueue = ofpact_put_ENQUEUE(ofpacts); |
1047 | if (!ofputil_port_from_string(port, &enqueue->port)) { | |
1048 | return xasprintf("%s: enqueue to unknown port", port); | |
1049 | } | |
1050 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1051 | } |
1052 | ||
c2d936a4 BP |
1053 | static void |
1054 | format_ENQUEUE(const struct ofpact_enqueue *a, struct ds *s) | |
29089a54 | 1055 | { |
b1c5bf1f | 1056 | ds_put_format(s, "%senqueue:%s", colors.param, colors.end); |
c2d936a4 BP |
1057 | ofputil_format_port(a->port, s); |
1058 | ds_put_format(s, ":%"PRIu32, a->queue); | |
1059 | } | |
1060 | \f | |
1061 | /* Action structure for NXAST_OUTPUT_REG. | |
1062 | * | |
1063 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1064 | * | |
1065 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1066 | * the NXAST_REG_LOAD action. | |
1067 | * | |
1068 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1069 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1070 | * | |
1071 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1072 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1073 | * field of OFPAT_OUTPUT. | |
1074 | * | |
1075 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1076 | struct nx_action_output_reg { | |
1077 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1078 | ovs_be16 len; /* 24. */ | |
1079 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1080 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1081 | |
c2d936a4 BP |
1082 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1083 | ovs_be32 src; /* Source. */ | |
29089a54 | 1084 | |
c2d936a4 | 1085 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1086 | |
c2d936a4 BP |
1087 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1088 | }; | |
1089 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1090 | |
bad8a439 BP |
1091 | /* Action structure for NXAST_OUTPUT_REG2. |
1092 | * | |
1093 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1094 | * experimenter OXM as 'src'. | |
1095 | */ | |
1096 | struct nx_action_output_reg2 { | |
1097 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1098 | ovs_be16 len; /* 24. */ | |
1099 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1100 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1101 | ||
1102 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1103 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1104 | ||
1105 | /* Followed by: | |
1106 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1107 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1108 | uint8_t pad[10]; | |
1109 | }; | |
1110 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1111 | ||
a7a2d006 | 1112 | static enum ofperr |
c2d936a4 | 1113 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1114 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1115 | struct ofpbuf *out) |
a7a2d006 | 1116 | { |
c2d936a4 | 1117 | struct ofpact_output_reg *output_reg; |
a7a2d006 | 1118 | |
c2d936a4 | 1119 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1120 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1121 | } | |
a7a2d006 | 1122 | |
c2d936a4 | 1123 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1124 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1125 | output_reg->src.field = mf_from_nxm_header(ntohl(naor->src)); |
1126 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1127 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1128 | output_reg->max_len = ntohs(naor->max_len); | |
1129 | ||
1130 | return mf_check_src(&output_reg->src, NULL); | |
a7a2d006 JS |
1131 | } |
1132 | ||
bad8a439 BP |
1133 | static enum ofperr |
1134 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 JS |
1135 | enum ofp_version ofp_version OVS_UNUSED, |
1136 | struct ofpbuf *out) | |
bad8a439 BP |
1137 | { |
1138 | struct ofpact_output_reg *output_reg; | |
bad8a439 BP |
1139 | output_reg = ofpact_put_OUTPUT_REG(out); |
1140 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1141 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1142 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1143 | output_reg->max_len = ntohs(naor->max_len); | |
1144 | ||
0a2869d5 | 1145 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1146 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 BP |
1147 | |
1148 | enum ofperr error = nx_pull_header(&b, &output_reg->src.field, NULL); | |
bad8a439 BP |
1149 | if (error) { |
1150 | return error; | |
1151 | } | |
6fd6ed71 | 1152 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1153 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1154 | } | |
1155 | ||
1156 | return mf_check_src(&output_reg->src, NULL); | |
1157 | } | |
1158 | ||
c2d936a4 BP |
1159 | static void |
1160 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1161 | enum ofp_version ofp_version OVS_UNUSED, | |
1162 | struct ofpbuf *out) | |
f25d0cf3 | 1163 | { |
bad8a439 BP |
1164 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1165 | * cannot be encoded in the older form, encode it as | |
1166 | * NXAST_RAW_OUTPUT_REG2. */ | |
1167 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1168 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1169 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1170 | size_t size = out->size; |
bad8a439 BP |
1171 | |
1172 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1173 | output_reg->src.n_bits); | |
1174 | naor->max_len = htons(output_reg->max_len); | |
1175 | ||
6fd6ed71 | 1176 | out->size = size - sizeof naor->pad; |
bad8a439 | 1177 | nx_put_header(out, output_reg->src.field->id, 0, false); |
6fd6ed71 | 1178 | out->size = size; |
bad8a439 BP |
1179 | } else { |
1180 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1181 | |
bad8a439 BP |
1182 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1183 | output_reg->src.n_bits); | |
1184 | naor->src = htonl(mf_nxm_header(output_reg->src.field->id)); | |
1185 | naor->max_len = htons(output_reg->max_len); | |
1186 | } | |
f25d0cf3 BP |
1187 | } |
1188 | ||
cab50449 | 1189 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1190 | parse_OUTPUT_REG(const char *arg, struct ofpbuf *ofpacts, |
1191 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
f25d0cf3 | 1192 | { |
c2d936a4 | 1193 | return parse_OUTPUT(arg, ofpacts, usable_protocols); |
f25d0cf3 BP |
1194 | } |
1195 | ||
c2d936a4 BP |
1196 | static void |
1197 | format_OUTPUT_REG(const struct ofpact_output_reg *a, struct ds *s) | |
f25d0cf3 | 1198 | { |
b1c5bf1f | 1199 | ds_put_format(s, "%soutput:%s", colors.special, colors.end); |
c2d936a4 BP |
1200 | mf_format_subfield(&a->src, s); |
1201 | } | |
1202 | \f | |
1203 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1204 | * | |
1205 | * The bundle actions choose a slave from a supplied list of options. | |
1206 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1207 | * selection to a register. | |
1208 | * | |
1209 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1210 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1211 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1212 | * the total length of the action a multiple of 8. | |
1213 | * | |
1214 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1215 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1216 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1217 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1218 | * unsupported slave types. | |
1219 | * | |
1220 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1221 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1222 | * it should reject the action. | |
1223 | * | |
1224 | * Several algorithms take into account liveness when selecting slaves. The | |
1225 | * liveness of a slave is implementation defined (with one exception), but will | |
1226 | * generally take into account things like its carrier status and the results | |
1227 | * of any link monitoring protocols which happen to be running on it. In order | |
1228 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
63460a30 TLSC |
1229 | * considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the output |
1230 | * register if no slave is live. | |
c2d936a4 BP |
1231 | * |
1232 | * Some slave selection strategies require the use of a hash function, in which | |
1233 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1234 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1235 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1236 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1237 | * of 'basis' yield different hash results. | |
1238 | * | |
1239 | * The 'zero' parameter at the end of the action structure is reserved for | |
1240 | * future use. Switches are required to reject actions which have nonzero | |
1241 | * bytes in the 'zero' field. | |
1242 | * | |
1243 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1244 | * should reject actions which have nonzero bytes in either of these fields. | |
1245 | * | |
1246 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1247 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1248 | * similar to those for the NXAST_REG_LOAD action. */ | |
1249 | struct nx_action_bundle { | |
1250 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1251 | ovs_be16 len; /* Length including slaves. */ | |
1252 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1253 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1254 | |
c2d936a4 BP |
1255 | /* Slave choice algorithm to apply to hash value. */ |
1256 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1257 | |
c2d936a4 BP |
1258 | /* What fields to hash and how. */ |
1259 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1260 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1261 | |
c2d936a4 BP |
1262 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1263 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1264 | |
c2d936a4 BP |
1265 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1266 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1267 | |
c2d936a4 BP |
1268 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1269 | }; | |
1270 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1271 | |
c2d936a4 BP |
1272 | static enum ofperr |
1273 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
1274 | struct ofpbuf *ofpacts) | |
1275 | { | |
1276 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1277 | struct ofpact_bundle *bundle; | |
1278 | uint32_t slave_type; | |
1279 | size_t slaves_size, i; | |
1280 | enum ofperr error; | |
bd85dac1 | 1281 | |
c2d936a4 BP |
1282 | bundle = ofpact_put_BUNDLE(ofpacts); |
1283 | ||
1284 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1285 | bundle->basis = ntohs(nab->basis); | |
1286 | bundle->fields = ntohs(nab->fields); | |
1287 | bundle->algorithm = ntohs(nab->algorithm); | |
1288 | slave_type = ntohl(nab->slave_type); | |
1289 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1290 | ||
1291 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1292 | if (!flow_hash_fields_valid(bundle->fields)) { | |
1293 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) bundle->fields); | |
1294 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { | |
1295 | VLOG_WARN_RL(&rl, "too many slaves"); | |
1296 | } else if (bundle->algorithm != NX_BD_ALG_HRW | |
1297 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
1298 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) bundle->algorithm); | |
508a9338 | 1299 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
c2d936a4 BP |
1300 | VLOG_WARN_RL(&rl, "unsupported slave type %"PRIu16, slave_type); |
1301 | } else { | |
1302 | error = 0; | |
1303 | } | |
bd85dac1 | 1304 | |
c2d936a4 BP |
1305 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
1306 | VLOG_WARN_RL(&rl, "reserved field is nonzero"); | |
1307 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1308 | } | |
f25d0cf3 | 1309 | |
c2d936a4 BP |
1310 | if (load) { |
1311 | bundle->dst.field = mf_from_nxm_header(ntohl(nab->dst)); | |
1312 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); | |
1313 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
f25d0cf3 | 1314 | |
c2d936a4 BP |
1315 | if (bundle->dst.n_bits < 16) { |
1316 | VLOG_WARN_RL(&rl, "bundle_load action requires at least 16 bit " | |
1317 | "destination."); | |
1318 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1319 | } | |
1320 | } else { | |
1321 | if (nab->ofs_nbits || nab->dst) { | |
1322 | VLOG_WARN_RL(&rl, "bundle action has nonzero reserved fields"); | |
1323 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1324 | } | |
1325 | } | |
f25d0cf3 | 1326 | |
c2d936a4 BP |
1327 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
1328 | VLOG_WARN_RL(&rl, "Nicira action %s only has %"PRIuSIZE" bytes " | |
1329 | "allocated for slaves. %"PRIuSIZE" bytes are required " | |
1330 | "for %"PRIu16" slaves.", | |
1331 | load ? "bundle_load" : "bundle", slaves_size, | |
1332 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1333 | error = OFPERR_OFPBAC_BAD_LEN; | |
1334 | } | |
f25d0cf3 | 1335 | |
c2d936a4 | 1336 | for (i = 0; i < bundle->n_slaves; i++) { |
117d7249 | 1337 | ofp_port_t ofp_port = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); |
c2d936a4 | 1338 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); |
19b58f3c | 1339 | bundle = ofpacts->header; |
c2d936a4 | 1340 | } |
f25d0cf3 | 1341 | |
ce058104 | 1342 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1343 | if (!error) { |
1344 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1345 | } | |
1346 | return error; | |
1347 | } | |
f25d0cf3 | 1348 | |
c2d936a4 | 1349 | static enum ofperr |
f3cd3ac7 JS |
1350 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1351 | enum ofp_version ofp_version OVS_UNUSED, | |
1352 | struct ofpbuf *out) | |
c2d936a4 BP |
1353 | { |
1354 | return decode_bundle(false, nab, out); | |
1355 | } | |
f25d0cf3 | 1356 | |
c2d936a4 BP |
1357 | static enum ofperr |
1358 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1359 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1360 | struct ofpbuf *out) |
1361 | { | |
1362 | return decode_bundle(true, nab, out); | |
1363 | } | |
c2d967a5 | 1364 | |
c2d936a4 BP |
1365 | static void |
1366 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1367 | enum ofp_version ofp_version OVS_UNUSED, | |
1368 | struct ofpbuf *out) | |
1369 | { | |
1370 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1371 | struct nx_action_bundle *nab; | |
1372 | ovs_be16 *slaves; | |
1373 | size_t i; | |
f25d0cf3 | 1374 | |
c2d936a4 BP |
1375 | nab = (bundle->dst.field |
1376 | ? put_NXAST_BUNDLE_LOAD(out) | |
1377 | : put_NXAST_BUNDLE(out)); | |
1378 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1379 | nab->algorithm = htons(bundle->algorithm); | |
1380 | nab->fields = htons(bundle->fields); | |
1381 | nab->basis = htons(bundle->basis); | |
508a9338 | 1382 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1383 | nab->n_slaves = htons(bundle->n_slaves); |
1384 | if (bundle->dst.field) { | |
1385 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1386 | bundle->dst.n_bits); | |
508a9338 | 1387 | nab->dst = htonl(mf_nxm_header(bundle->dst.field->id)); |
c2d936a4 | 1388 | } |
f25d0cf3 | 1389 | |
c2d936a4 BP |
1390 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1391 | for (i = 0; i < bundle->n_slaves; i++) { | |
1392 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1393 | } | |
1394 | } | |
b02475c5 | 1395 | |
cab50449 | 1396 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1397 | parse_BUNDLE(const char *arg, struct ofpbuf *ofpacts, |
1398 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1399 | { | |
1400 | return bundle_parse(arg, ofpacts); | |
1401 | } | |
b02475c5 | 1402 | |
cab50449 | 1403 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1404 | parse_bundle_load(const char *arg, struct ofpbuf *ofpacts) |
1405 | { | |
1406 | return bundle_parse_load(arg, ofpacts); | |
1407 | } | |
097d4939 | 1408 | |
c2d936a4 BP |
1409 | static void |
1410 | format_BUNDLE(const struct ofpact_bundle *a, struct ds *s) | |
1411 | { | |
1412 | bundle_format(a, s); | |
1413 | } | |
1414 | \f | |
1415 | /* Set VLAN actions. */ | |
097d4939 | 1416 | |
c2d936a4 BP |
1417 | static enum ofperr |
1418 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1419 | { | |
1420 | if (vid & ~0xfff) { | |
1421 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1422 | } else { | |
1423 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1424 | vlan_vid->vlan_vid = vid; | |
1425 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1426 | return 0; | |
1427 | } | |
1428 | } | |
0f3f3c3d | 1429 | |
c2d936a4 | 1430 | static enum ofperr |
f3cd3ac7 JS |
1431 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1432 | enum ofp_version ofp_version OVS_UNUSED, | |
1433 | struct ofpbuf *out) | |
c2d936a4 BP |
1434 | { |
1435 | return decode_set_vlan_vid(vid, true, out); | |
1436 | } | |
b676167a | 1437 | |
c2d936a4 | 1438 | static enum ofperr |
f3cd3ac7 JS |
1439 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1440 | enum ofp_version ofp_version OVS_UNUSED, | |
1441 | struct ofpbuf *out) | |
c2d936a4 BP |
1442 | { |
1443 | return decode_set_vlan_vid(vid, false, out); | |
1444 | } | |
29089a54 | 1445 | |
c2d936a4 BP |
1446 | static void |
1447 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1448 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1449 | { | |
1450 | uint16_t vid = vlan_vid->vlan_vid; | |
1451 | ||
1452 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1453 | * for such a feature. */ | |
1454 | if (ofp_version > OFP10_VERSION | |
1455 | && vlan_vid->push_vlan_if_needed | |
1456 | && !vlan_vid->flow_has_vlan) { | |
1457 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1458 | } |
1459 | ||
c2d936a4 BP |
1460 | if (ofp_version == OFP10_VERSION) { |
1461 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1462 | } else if (ofp_version == OFP11_VERSION) { | |
1463 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1464 | } else { | |
128684a6 | 1465 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1466 | } |
f25d0cf3 BP |
1467 | } |
1468 | ||
cab50449 | 1469 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 1470 | parse_set_vlan_vid(char *arg, struct ofpbuf *ofpacts, bool push_vlan_if_needed) |
d01c980f | 1471 | { |
ca287d20 | 1472 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1473 | uint16_t vid; |
1474 | char *error; | |
d01c980f | 1475 | |
c2d936a4 | 1476 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1477 | if (error) { |
1478 | return error; | |
1479 | } | |
1480 | ||
c2d936a4 BP |
1481 | if (vid & ~VLAN_VID_MASK) { |
1482 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1483 | } |
c2d936a4 BP |
1484 | vlan_vid = ofpact_put_SET_VLAN_VID(ofpacts); |
1485 | vlan_vid->vlan_vid = vid; | |
1486 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1487 | return NULL; | |
1488 | } | |
d01c980f | 1489 | |
cab50449 | 1490 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1491 | parse_SET_VLAN_VID(char *arg, struct ofpbuf *ofpacts, |
1492 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1493 | { | |
1494 | return parse_set_vlan_vid(arg, ofpacts, false); | |
d01c980f BP |
1495 | } |
1496 | ||
c2d936a4 BP |
1497 | static void |
1498 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, struct ds *s) | |
1499 | { | |
b1c5bf1f | 1500 | ds_put_format(s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1501 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1502 | colors.end, a->vlan_vid); |
c2d936a4 BP |
1503 | } |
1504 | \f | |
1505 | /* Set PCP actions. */ | |
e3f8f887 | 1506 | |
c2d936a4 BP |
1507 | static enum ofperr |
1508 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1509 | { |
c2d936a4 BP |
1510 | if (pcp & ~7) { |
1511 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1512 | } else { | |
1513 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1514 | vlan_pcp->vlan_pcp = pcp; | |
1515 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1516 | return 0; | |
1517 | } | |
f25d0cf3 BP |
1518 | } |
1519 | ||
c2d936a4 | 1520 | static enum ofperr |
f3cd3ac7 JS |
1521 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1522 | enum ofp_version ofp_version OVS_UNUSED, | |
1523 | struct ofpbuf *out) | |
f25d0cf3 | 1524 | { |
c2d936a4 | 1525 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1526 | } |
1527 | ||
c2d936a4 | 1528 | static enum ofperr |
f3cd3ac7 JS |
1529 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1530 | enum ofp_version ofp_version OVS_UNUSED, | |
1531 | struct ofpbuf *out) | |
c2d936a4 BP |
1532 | { |
1533 | return decode_set_vlan_pcp(pcp, false, out); | |
1534 | } | |
f25d0cf3 | 1535 | |
699dddf1 | 1536 | static void |
c2d936a4 BP |
1537 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1538 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1539 | { |
c2d936a4 BP |
1540 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1541 | ||
1542 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1543 | * for such a feature. */ | |
1544 | if (ofp_version > OFP10_VERSION | |
1545 | && vlan_pcp->push_vlan_if_needed | |
1546 | && !vlan_pcp->flow_has_vlan) { | |
1547 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1548 | } | |
699dddf1 | 1549 | |
c2d936a4 BP |
1550 | if (ofp_version == OFP10_VERSION) { |
1551 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1552 | } else if (ofp_version == OFP11_VERSION) { | |
1553 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1554 | } else { | |
128684a6 | 1555 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1556 | } |
1557 | } | |
1558 | ||
cab50449 | 1559 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 1560 | parse_set_vlan_pcp(char *arg, struct ofpbuf *ofpacts, bool push_vlan_if_needed) |
f25d0cf3 | 1561 | { |
c2d936a4 BP |
1562 | struct ofpact_vlan_pcp *vlan_pcp; |
1563 | uint8_t pcp; | |
1564 | char *error; | |
e3f8f887 | 1565 | |
c2d936a4 BP |
1566 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1567 | if (error) { | |
699dddf1 | 1568 | return error; |
f25d0cf3 BP |
1569 | } |
1570 | ||
c2d936a4 BP |
1571 | if (pcp & ~7) { |
1572 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1573 | } | |
1574 | vlan_pcp = ofpact_put_SET_VLAN_PCP(ofpacts); | |
1575 | vlan_pcp->vlan_pcp = pcp; | |
1576 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1577 | return NULL; | |
1578 | } | |
1579 | ||
cab50449 | 1580 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1581 | parse_SET_VLAN_PCP(char *arg, struct ofpbuf *ofpacts, |
1582 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1583 | { | |
1584 | return parse_set_vlan_pcp(arg, ofpacts, false); | |
1585 | } | |
1586 | ||
1587 | static void | |
1588 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, struct ds *s) | |
1589 | { | |
b1c5bf1f | 1590 | ds_put_format(s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1591 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1592 | colors.end, a->vlan_pcp); |
c2d936a4 BP |
1593 | } |
1594 | \f | |
1595 | /* Strip VLAN actions. */ | |
1596 | ||
1597 | static enum ofperr | |
1598 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1599 | { | |
1600 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1601 | return 0; |
1602 | } | |
1603 | ||
8f2cded4 | 1604 | static enum ofperr |
c2d936a4 | 1605 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1606 | { |
c2d936a4 BP |
1607 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1608 | return 0; | |
1609 | } | |
f25d0cf3 | 1610 | |
c2d936a4 BP |
1611 | static void |
1612 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1613 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1614 | { | |
1615 | if (ofp_version == OFP10_VERSION) { | |
1616 | put_OFPAT10_STRIP_VLAN(out); | |
1617 | } else { | |
1618 | put_OFPAT11_POP_VLAN(out); | |
1619 | } | |
1620 | } | |
f25d0cf3 | 1621 | |
cab50449 | 1622 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1623 | parse_STRIP_VLAN(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
1624 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1625 | { | |
1626 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
1627 | return NULL; | |
1628 | } | |
1629 | ||
cab50449 | 1630 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1631 | parse_pop_vlan(struct ofpbuf *ofpacts) |
1632 | { | |
1633 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; | |
1634 | return NULL; | |
1635 | } | |
1636 | ||
1637 | static void | |
1638 | format_STRIP_VLAN(const struct ofpact_null *a, struct ds *s) | |
1639 | { | |
b1c5bf1f QM |
1640 | ds_put_format(s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
1641 | ? "%spop_vlan%s" | |
1642 | : "%sstrip_vlan%s"), | |
1643 | colors.value, colors.end); | |
c2d936a4 BP |
1644 | } |
1645 | \f | |
1646 | /* Push VLAN action. */ | |
1647 | ||
1648 | static enum ofperr | |
f3cd3ac7 JS |
1649 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1650 | enum ofp_version ofp_version OVS_UNUSED, | |
1651 | struct ofpbuf *out) | |
c2d936a4 BP |
1652 | { |
1653 | if (eth_type != htons(ETH_TYPE_VLAN_8021Q)) { | |
1654 | /* XXX 802.1AD(QinQ) isn't supported at the moment */ | |
1655 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
f25d0cf3 | 1656 | } |
c2d936a4 BP |
1657 | ofpact_put_PUSH_VLAN(out); |
1658 | return 0; | |
1659 | } | |
f25d0cf3 | 1660 | |
c2d936a4 BP |
1661 | static void |
1662 | encode_PUSH_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1663 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1664 | { | |
1665 | if (ofp_version == OFP10_VERSION) { | |
1666 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1667 | * follow this action. */ | |
1668 | } else { | |
1669 | /* XXX ETH_TYPE_VLAN_8021AD case */ | |
1670 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 | 1671 | } |
c2d936a4 | 1672 | } |
f25d0cf3 | 1673 | |
cab50449 | 1674 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1675 | parse_PUSH_VLAN(char *arg, struct ofpbuf *ofpacts, |
1676 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1677 | { | |
1678 | uint16_t ethertype; | |
1679 | char *error; | |
1680 | ||
1681 | *usable_protocols &= OFPUTIL_P_OF11_UP; | |
1682 | error = str_to_u16(arg, "ethertype", ðertype); | |
4cceacb9 | 1683 | if (error) { |
4cceacb9 JS |
1684 | return error; |
1685 | } | |
1686 | ||
c2d936a4 BP |
1687 | if (ethertype != ETH_TYPE_VLAN_8021Q) { |
1688 | /* XXX ETH_TYPE_VLAN_8021AD case isn't supported */ | |
1689 | return xasprintf("%s: not a valid VLAN ethertype", arg); | |
f25d0cf3 | 1690 | } |
c2d936a4 BP |
1691 | |
1692 | ofpact_put_PUSH_VLAN(ofpacts); | |
1693 | return NULL; | |
d01c980f BP |
1694 | } |
1695 | ||
c2d936a4 BP |
1696 | static void |
1697 | format_PUSH_VLAN(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
8f2cded4 | 1698 | { |
c2d936a4 | 1699 | /* XXX 802.1AD case*/ |
b1c5bf1f QM |
1700 | ds_put_format(s, "%spush_vlan:%s%#"PRIx16, |
1701 | colors.param, colors.end, ETH_TYPE_VLAN_8021Q); | |
8f2cded4 | 1702 | } |
d01c980f | 1703 | \f |
c2d936a4 BP |
1704 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1705 | struct ofp_action_dl_addr { | |
1706 | ovs_be16 type; /* Type. */ | |
1707 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1708 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1709 | uint8_t pad[6]; |
1710 | }; | |
1711 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1712 | |
d01c980f | 1713 | static enum ofperr |
c2d936a4 | 1714 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1715 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1716 | struct ofpbuf *out) |
d01c980f | 1717 | { |
74ff3298 | 1718 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1719 | return 0; |
1720 | } | |
3ddcaf2d | 1721 | |
c2d936a4 BP |
1722 | static enum ofperr |
1723 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1724 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1725 | struct ofpbuf *out) |
1726 | { | |
74ff3298 | 1727 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1728 | return 0; |
1729 | } | |
d01c980f | 1730 | |
c2d936a4 BP |
1731 | static void |
1732 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1733 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1734 | struct ofpbuf *out) | |
1735 | { | |
c2d936a4 BP |
1736 | if (ofp_version < OFP12_VERSION) { |
1737 | struct ofp_action_dl_addr *oada; | |
1738 | ||
1739 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1740 | oada->dl_addr = mac->mac; |
c2d936a4 | 1741 | } else { |
128684a6 | 1742 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1743 | } |
1744 | } | |
1745 | ||
c2d936a4 BP |
1746 | static void |
1747 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1748 | struct ofpbuf *out) | |
b2dd70be | 1749 | { |
c2d936a4 BP |
1750 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1751 | out); | |
b2dd70be | 1752 | |
c2d936a4 | 1753 | } |
b2dd70be | 1754 | |
c2d936a4 BP |
1755 | static void |
1756 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1757 | enum ofp_version ofp_version, | |
1758 | struct ofpbuf *out) | |
1759 | { | |
1760 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1761 | out); | |
b2dd70be | 1762 | |
c2d936a4 | 1763 | } |
b2dd70be | 1764 | |
cab50449 | 1765 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1766 | parse_SET_ETH_SRC(char *arg, struct ofpbuf *ofpacts, |
1767 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1768 | { | |
74ff3298 | 1769 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(ofpacts)->mac); |
c2d936a4 BP |
1770 | } |
1771 | ||
cab50449 | 1772 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1773 | parse_SET_ETH_DST(char *arg, struct ofpbuf *ofpacts, |
1774 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1775 | { | |
74ff3298 | 1776 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(ofpacts)->mac); |
b2dd70be JR |
1777 | } |
1778 | ||
1779 | static void | |
c2d936a4 | 1780 | format_SET_ETH_SRC(const struct ofpact_mac *a, struct ds *s) |
b2dd70be | 1781 | { |
b1c5bf1f QM |
1782 | ds_put_format(s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
1783 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 | 1784 | } |
b2dd70be | 1785 | |
c2d936a4 BP |
1786 | static void |
1787 | format_SET_ETH_DST(const struct ofpact_mac *a, struct ds *s) | |
1788 | { | |
b1c5bf1f QM |
1789 | ds_put_format(s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
1790 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 BP |
1791 | } |
1792 | \f | |
1793 | /* Set IPv4 address actions. */ | |
b2dd70be | 1794 | |
c2d936a4 | 1795 | static enum ofperr |
f3cd3ac7 JS |
1796 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1797 | enum ofp_version ofp_version OVS_UNUSED, | |
1798 | struct ofpbuf *out) | |
c2d936a4 BP |
1799 | { |
1800 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1801 | return 0; | |
b2dd70be JR |
1802 | } |
1803 | ||
c2d936a4 | 1804 | static enum ofperr |
f3cd3ac7 JS |
1805 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
1806 | enum ofp_version ofp_version OVS_UNUSED, | |
1807 | struct ofpbuf *out) | |
b2dd70be | 1808 | { |
c2d936a4 BP |
1809 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
1810 | return 0; | |
1811 | } | |
b2dd70be | 1812 | |
c2d936a4 BP |
1813 | static void |
1814 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
1815 | enum ofp_version ofp_version, | |
1816 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1817 | struct ofpbuf *out) | |
1818 | { | |
1819 | ovs_be32 addr = ipv4->ipv4; | |
1820 | if (ofp_version < OFP12_VERSION) { | |
1821 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 1822 | } else { |
128684a6 | 1823 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
1824 | } |
1825 | } | |
1826 | ||
a6fd70bb | 1827 | static void |
c2d936a4 BP |
1828 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
1829 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1830 | { |
c2d936a4 BP |
1831 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
1832 | out); | |
1833 | } | |
a6fd70bb | 1834 | |
c2d936a4 BP |
1835 | static void |
1836 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
1837 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1838 | { | |
1839 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
1840 | out); | |
1841 | } | |
a6fd70bb | 1842 | |
cab50449 | 1843 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1844 | parse_SET_IPV4_SRC(char *arg, struct ofpbuf *ofpacts, |
1845 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1846 | { | |
1847 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(ofpacts)->ipv4); | |
1848 | } | |
a6fd70bb | 1849 | |
cab50449 | 1850 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1851 | parse_SET_IPV4_DST(char *arg, struct ofpbuf *ofpacts, |
1852 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1853 | { | |
1854 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(ofpacts)->ipv4); | |
1855 | } | |
a6fd70bb | 1856 | |
c2d936a4 BP |
1857 | static void |
1858 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, struct ds *s) | |
1859 | { | |
b1c5bf1f QM |
1860 | ds_put_format(s, "%smod_nw_src:%s"IP_FMT, |
1861 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 | 1862 | } |
097d4939 | 1863 | |
c2d936a4 BP |
1864 | static void |
1865 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, struct ds *s) | |
1866 | { | |
b1c5bf1f QM |
1867 | ds_put_format(s, "%smod_nw_dst:%s"IP_FMT, |
1868 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 BP |
1869 | } |
1870 | \f | |
1871 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 1872 | |
c2d936a4 | 1873 | static enum ofperr |
f3cd3ac7 JS |
1874 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
1875 | enum ofp_version ofp_version OVS_UNUSED, | |
1876 | struct ofpbuf *out) | |
c2d936a4 BP |
1877 | { |
1878 | if (dscp & ~IP_DSCP_MASK) { | |
1879 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1880 | } else { | |
1881 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
1882 | return 0; | |
a6fd70bb JR |
1883 | } |
1884 | } | |
1885 | ||
a6fd70bb | 1886 | static void |
c2d936a4 BP |
1887 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
1888 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1889 | { |
c2d936a4 BP |
1890 | if (ofp_version < OFP12_VERSION) { |
1891 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
1892 | } else { | |
128684a6 | 1893 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
1894 | } |
1895 | } | |
a6fd70bb | 1896 | |
cab50449 | 1897 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1898 | parse_SET_IP_DSCP(char *arg, struct ofpbuf *ofpacts, |
1899 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1900 | { | |
1901 | uint8_t tos; | |
1902 | char *error; | |
a6fd70bb | 1903 | |
c2d936a4 BP |
1904 | error = str_to_u8(arg, "TOS", &tos); |
1905 | if (error) { | |
1906 | return error; | |
1907 | } | |
a6fd70bb | 1908 | |
c2d936a4 BP |
1909 | if (tos & ~IP_DSCP_MASK) { |
1910 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 1911 | } |
c2d936a4 BP |
1912 | ofpact_put_SET_IP_DSCP(ofpacts)->dscp = tos; |
1913 | return NULL; | |
a6fd70bb JR |
1914 | } |
1915 | ||
b2dd70be | 1916 | static void |
c2d936a4 | 1917 | format_SET_IP_DSCP(const struct ofpact_dscp *a, struct ds *s) |
b2dd70be | 1918 | { |
b1c5bf1f | 1919 | ds_put_format(s, "%smod_nw_tos:%s%d", colors.param, colors.end, a->dscp); |
c2d936a4 BP |
1920 | } |
1921 | \f | |
1922 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 1923 | |
c2d936a4 | 1924 | static enum ofperr |
f3cd3ac7 JS |
1925 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
1926 | enum ofp_version ofp_version OVS_UNUSED, | |
1927 | struct ofpbuf *out) | |
c2d936a4 BP |
1928 | { |
1929 | if (ecn & ~IP_ECN_MASK) { | |
1930 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 1931 | } else { |
c2d936a4 BP |
1932 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
1933 | return 0; | |
b2dd70be JR |
1934 | } |
1935 | } | |
1936 | ||
c2d936a4 BP |
1937 | static void |
1938 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
1939 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 1940 | { |
c2d936a4 BP |
1941 | uint8_t ecn = ip_ecn->ecn; |
1942 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
1943 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
1944 | .ofs = 0, .n_bits = 2 }; | |
1945 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
1946 | } else if (ofp_version == OFP11_VERSION) { |
1947 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
1948 | } else { | |
128684a6 | 1949 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
1950 | } |
1951 | } | |
d01c980f | 1952 | |
cab50449 | 1953 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1954 | parse_SET_IP_ECN(char *arg, struct ofpbuf *ofpacts, |
1955 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1956 | { | |
1957 | uint8_t ecn; | |
1958 | char *error; | |
d01c980f | 1959 | |
c2d936a4 | 1960 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
1961 | if (error) { |
1962 | return error; | |
1963 | } | |
1964 | ||
c2d936a4 BP |
1965 | if (ecn & ~IP_ECN_MASK) { |
1966 | return xasprintf("%s: not a valid ECN", arg); | |
1967 | } | |
1968 | ofpact_put_SET_IP_ECN(ofpacts)->ecn = ecn; | |
1969 | return NULL; | |
d01c980f BP |
1970 | } |
1971 | ||
c2d936a4 BP |
1972 | static void |
1973 | format_SET_IP_ECN(const struct ofpact_ecn *a, struct ds *s) | |
1974 | { | |
b1c5bf1f QM |
1975 | ds_put_format(s, "%smod_nw_ecn:%s%d", |
1976 | colors.param, colors.end, a->ecn); | |
c2d936a4 BP |
1977 | } |
1978 | \f | |
1979 | /* Set IPv4/v6 TTL actions. */ | |
1980 | ||
d01c980f | 1981 | static enum ofperr |
f3cd3ac7 JS |
1982 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
1983 | enum ofp_version ofp_version OVS_UNUSED, | |
1984 | struct ofpbuf *out) | |
d01c980f | 1985 | { |
c2d936a4 BP |
1986 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
1987 | return 0; | |
1988 | } | |
1989 | ||
1990 | static void | |
1991 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
1992 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1993 | { | |
1994 | if (ofp_version >= OFP11_VERSION) { | |
1995 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
1996 | } else { | |
56a91749 BP |
1997 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
1998 | .ofs = 0, .n_bits = 8 }; | |
1999 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
2000 | } |
2001 | } | |
2002 | ||
cab50449 | 2003 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2004 | parse_SET_IP_TTL(char *arg, struct ofpbuf *ofpacts, |
2005 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2006 | { | |
2007 | uint8_t ttl; | |
2008 | char *error; | |
d01c980f | 2009 | |
c2d936a4 | 2010 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2011 | if (error) { |
2012 | return error; | |
2013 | } | |
2014 | ||
c2d936a4 BP |
2015 | ofpact_put_SET_IP_TTL(ofpacts)->ttl = ttl; |
2016 | return NULL; | |
2017 | } | |
d01c980f | 2018 | |
c2d936a4 BP |
2019 | static void |
2020 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, struct ds *s) | |
2021 | { | |
b1c5bf1f | 2022 | ds_put_format(s, "%smod_nw_ttl:%s%d", colors.param, colors.end, a->ttl); |
c2d936a4 BP |
2023 | } |
2024 | \f | |
2025 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2026 | |
c2d936a4 | 2027 | static enum ofperr |
f3cd3ac7 JS |
2028 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2029 | enum ofp_version ofp_version OVS_UNUSED, | |
2030 | struct ofpbuf *out) | |
c2d936a4 BP |
2031 | { |
2032 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2033 | return 0; | |
2034 | } | |
d01c980f | 2035 | |
c2d936a4 | 2036 | static enum ofperr |
f3cd3ac7 JS |
2037 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2038 | enum ofp_version ofp_version OVS_UNUSED, | |
2039 | struct ofpbuf *out) | |
c2d936a4 BP |
2040 | { |
2041 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2042 | return 0; | |
2043 | } | |
d01c980f | 2044 | |
c2d936a4 BP |
2045 | static void |
2046 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2047 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2048 | enum mf_field_id field, struct ofpbuf *out) | |
2049 | { | |
2050 | uint16_t port = l4_port->port; | |
3e34fbdd | 2051 | |
c2d936a4 | 2052 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2053 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2054 | } else { |
2055 | ofpact_put_raw(out, ofp_version, raw, port); | |
2056 | } | |
2057 | } | |
8e61c110 | 2058 | |
c2d936a4 BP |
2059 | static void |
2060 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2061 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2062 | { | |
2063 | uint8_t proto = l4_port->flow_ip_proto; | |
2064 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2065 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2066 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2067 | : MFF_N_IDS); | |
276c4e7a | 2068 | |
c2d936a4 BP |
2069 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2070 | } | |
d01c980f | 2071 | |
c2d936a4 BP |
2072 | static void |
2073 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2074 | enum ofp_version ofp_version, | |
2075 | struct ofpbuf *out) | |
2076 | { | |
2077 | uint8_t proto = l4_port->flow_ip_proto; | |
2078 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2079 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2080 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2081 | : MFF_N_IDS); | |
d01c980f | 2082 | |
c2d936a4 BP |
2083 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2084 | } | |
7bcb1506 | 2085 | |
cab50449 | 2086 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2087 | parse_SET_L4_SRC_PORT(char *arg, struct ofpbuf *ofpacts, |
2088 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2089 | { | |
2090 | return str_to_u16(arg, "source port", | |
2091 | &ofpact_put_SET_L4_SRC_PORT(ofpacts)->port); | |
2092 | } | |
d01c980f | 2093 | |
cab50449 | 2094 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2095 | parse_SET_L4_DST_PORT(char *arg, struct ofpbuf *ofpacts, |
2096 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2097 | { | |
2098 | return str_to_u16(arg, "destination port", | |
2099 | &ofpact_put_SET_L4_DST_PORT(ofpacts)->port); | |
2100 | } | |
d01c980f | 2101 | |
c2d936a4 BP |
2102 | static void |
2103 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, struct ds *s) | |
2104 | { | |
b1c5bf1f | 2105 | ds_put_format(s, "%smod_tp_src:%s%d", colors.param, colors.end, a->port); |
c2d936a4 | 2106 | } |
d01c980f | 2107 | |
c2d936a4 BP |
2108 | static void |
2109 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, struct ds *s) | |
2110 | { | |
b1c5bf1f | 2111 | ds_put_format(s, "%smod_tp_dst:%s%d", colors.param, colors.end, a->port); |
c2d936a4 BP |
2112 | } |
2113 | \f | |
73178f20 BP |
2114 | /* Action structure for OFPAT_COPY_FIELD. */ |
2115 | struct ofp15_action_copy_field { | |
2116 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2117 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2118 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2119 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2120 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2121 | uint8_t pad[2]; |
f13cdd73 BP |
2122 | /* Followed by: |
2123 | * - OXM header for source field. | |
2124 | * - OXM header for destination field. | |
2125 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2126 | * The "pad2" member is the beginning of the above. */ |
2127 | uint8_t pad2[4]; | |
73178f20 | 2128 | }; |
f13cdd73 | 2129 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2130 | |
914624f8 BP |
2131 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2132 | struct onf_action_copy_field { | |
2133 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2134 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2135 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2136 | ovs_be16 exp_type; /* 3200. */ | |
2137 | uint8_t pad[2]; /* Not used. */ | |
2138 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2139 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2140 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2141 | uint8_t pad2[2]; /* Not used. */ | |
2142 | /* Followed by: | |
2143 | * - OXM header for source field. | |
2144 | * - OXM header for destination field. | |
2145 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2146 | * The "pad3" member is the beginning of the above. */ | |
2147 | uint8_t pad3[4]; /* Not used. */ | |
2148 | }; | |
2149 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2150 | ||
c2d936a4 BP |
2151 | /* Action structure for NXAST_REG_MOVE. |
2152 | * | |
2153 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2154 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2155 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2156 | * the next most significant bit, and so on. | |
2157 | * | |
2158 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2159 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2160 | * matching; it uses the actual value of a field.) | |
2161 | * | |
2162 | * The following nxm_header values are potentially acceptable as 'src': | |
2163 | * | |
2164 | * - NXM_OF_IN_PORT | |
2165 | * - NXM_OF_ETH_DST | |
2166 | * - NXM_OF_ETH_SRC | |
2167 | * - NXM_OF_ETH_TYPE | |
2168 | * - NXM_OF_VLAN_TCI | |
2169 | * - NXM_OF_IP_TOS | |
2170 | * - NXM_OF_IP_PROTO | |
2171 | * - NXM_OF_IP_SRC | |
2172 | * - NXM_OF_IP_DST | |
2173 | * - NXM_OF_TCP_SRC | |
2174 | * - NXM_OF_TCP_DST | |
2175 | * - NXM_OF_UDP_SRC | |
2176 | * - NXM_OF_UDP_DST | |
2177 | * - NXM_OF_ICMP_TYPE | |
2178 | * - NXM_OF_ICMP_CODE | |
2179 | * - NXM_OF_ARP_OP | |
2180 | * - NXM_OF_ARP_SPA | |
2181 | * - NXM_OF_ARP_TPA | |
2182 | * - NXM_NX_TUN_ID | |
2183 | * - NXM_NX_ARP_SHA | |
2184 | * - NXM_NX_ARP_THA | |
2185 | * - NXM_NX_ICMPV6_TYPE | |
2186 | * - NXM_NX_ICMPV6_CODE | |
2187 | * - NXM_NX_ND_SLL | |
2188 | * - NXM_NX_ND_TLL | |
2189 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2190 | * - NXM_NX_PKT_MARK | |
2191 | * - NXM_NX_TUN_IPV4_SRC | |
2192 | * - NXM_NX_TUN_IPV4_DST | |
2193 | * | |
2194 | * The following nxm_header values are potentially acceptable as 'dst': | |
2195 | * | |
2196 | * - NXM_OF_ETH_DST | |
2197 | * - NXM_OF_ETH_SRC | |
2198 | * - NXM_OF_IP_TOS | |
2199 | * - NXM_OF_IP_SRC | |
2200 | * - NXM_OF_IP_DST | |
2201 | * - NXM_OF_TCP_SRC | |
2202 | * - NXM_OF_TCP_DST | |
2203 | * - NXM_OF_UDP_SRC | |
2204 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2205 | * - NXM_OF_ICMP_TYPE |
2206 | * - NXM_OF_ICMP_CODE | |
2207 | * - NXM_NX_ICMPV6_TYPE | |
2208 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2209 | * - NXM_NX_ARP_SHA |
2210 | * - NXM_NX_ARP_THA | |
2211 | * - NXM_OF_ARP_OP | |
2212 | * - NXM_OF_ARP_SPA | |
2213 | * - NXM_OF_ARP_TPA | |
2214 | * Modifying any of the above fields changes the corresponding packet | |
2215 | * header. | |
2216 | * | |
2217 | * - NXM_OF_IN_PORT | |
2218 | * | |
2219 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2220 | * | |
2221 | * - NXM_NX_PKT_MARK | |
2222 | * | |
2223 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2224 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2225 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2226 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2227 | * to the field's new value (with the CFI bit masked out). | |
2228 | * | |
2229 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2230 | * any of these values modifies the corresponding tunnel header field used | |
2231 | * for the packet's next tunnel encapsulation, if allowed by the | |
2232 | * configuration of the output tunnel port. | |
2233 | * | |
2234 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2235 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2236 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2237 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2238 | * | |
2239 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2240 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2241 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2242 | * | |
2243 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2244 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2245 | * temporary buffer copied to 'dst'. | |
2246 | */ | |
2247 | struct nx_action_reg_move { | |
2248 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2249 | ovs_be16 len; /* Length is 24. */ | |
2250 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2251 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2252 | ovs_be16 n_bits; /* Number of bits. */ | |
2253 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2254 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2255 | /* Followed by: |
2256 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2257 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2258 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2259 | }; |
bad8a439 | 2260 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2261 | |
73178f20 | 2262 | static enum ofperr |
914624f8 BP |
2263 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2264 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
2265 | struct ofpbuf *ofpacts) | |
73178f20 | 2266 | { |
0a2869d5 | 2267 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
914624f8 BP |
2268 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2269 | move->src.ofs = ntohs(src_offset); | |
2270 | move->src.n_bits = ntohs(n_bits); | |
2271 | move->dst.ofs = ntohs(dst_offset); | |
2272 | move->dst.n_bits = ntohs(n_bits); | |
2273 | ||
0a2869d5 | 2274 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2275 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 BP |
2276 | |
2277 | enum ofperr error = nx_pull_header(&b, &move->src.field, NULL); | |
f13cdd73 BP |
2278 | if (error) { |
2279 | return error; | |
2280 | } | |
2281 | error = nx_pull_header(&b, &move->dst.field, NULL); | |
2282 | if (error) { | |
2283 | return error; | |
2284 | } | |
f13cdd73 | 2285 | |
6fd6ed71 | 2286 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2287 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2288 | } | |
2289 | ||
73178f20 BP |
2290 | return nxm_reg_move_check(move, NULL); |
2291 | } | |
2292 | ||
914624f8 BP |
2293 | static enum ofperr |
2294 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2295 | enum ofp_version ofp_version OVS_UNUSED, |
914624f8 BP |
2296 | struct ofpbuf *ofpacts) |
2297 | { | |
2298 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2299 | oacf->n_bits, oacf, oacf->len, | |
2300 | OBJECT_OFFSETOF(oacf, pad2), ofpacts); | |
2301 | } | |
2302 | ||
2303 | static enum ofperr | |
2304 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2305 | enum ofp_version ofp_version OVS_UNUSED, |
914624f8 BP |
2306 | struct ofpbuf *ofpacts) |
2307 | { | |
2308 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2309 | oacf->n_bits, oacf, oacf->len, | |
2310 | OBJECT_OFFSETOF(oacf, pad3), ofpacts); | |
2311 | } | |
2312 | ||
c2d936a4 BP |
2313 | static enum ofperr |
2314 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2315 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
2316 | struct ofpbuf *ofpacts) |
2317 | { | |
0a2869d5 | 2318 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
914624f8 | 2319 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2320 | move->src.ofs = ntohs(narm->src_ofs); |
2321 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2322 | move->dst.ofs = ntohs(narm->dst_ofs); |
2323 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2324 | |
0a2869d5 | 2325 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2326 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 BP |
2327 | |
2328 | enum ofperr error = nx_pull_header(&b, &move->src.field, NULL); | |
bad8a439 BP |
2329 | if (error) { |
2330 | return error; | |
2331 | } | |
2332 | error = nx_pull_header(&b, &move->dst.field, NULL); | |
2333 | if (error) { | |
2334 | return error; | |
2335 | } | |
6fd6ed71 | 2336 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2337 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2338 | } | |
2339 | ||
c2d936a4 BP |
2340 | return nxm_reg_move_check(move, NULL); |
2341 | } | |
d01c980f | 2342 | |
c2d936a4 BP |
2343 | static void |
2344 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2345 | enum ofp_version ofp_version, struct ofpbuf *out) |
2346 | { | |
914624f8 BP |
2347 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2348 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2349 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2350 | * probe for support. Until we have that ability, we currently prefer | |
2351 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2352 | * versions. */ | |
6fd6ed71 | 2353 | size_t start_ofs = out->size; |
73178f20 | 2354 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2355 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2356 | copy->n_bits = htons(move->dst.n_bits); |
2357 | copy->src_offset = htons(move->src.ofs); | |
2358 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2359 | out->size = out->size - sizeof copy->pad2; |
f13cdd73 BP |
2360 | nx_put_header(out, move->src.field->id, ofp_version, false); |
2361 | nx_put_header(out, move->dst.field->id, ofp_version, false); | |
914624f8 BP |
2362 | } else if (ofp_version == OFP13_VERSION |
2363 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2364 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2365 | copy->n_bits = htons(move->dst.n_bits); | |
2366 | copy->src_offset = htons(move->src.ofs); | |
2367 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2368 | out->size = out->size - sizeof copy->pad3; |
914624f8 BP |
2369 | nx_put_header(out, move->src.field->id, ofp_version, false); |
2370 | nx_put_header(out, move->dst.field->id, ofp_version, false); | |
73178f20 | 2371 | } else { |
bad8a439 | 2372 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2373 | narm->n_bits = htons(move->dst.n_bits); |
2374 | narm->src_ofs = htons(move->src.ofs); | |
2375 | narm->dst_ofs = htons(move->dst.ofs); | |
bad8a439 BP |
2376 | nx_put_header(out, move->src.field->id, 0, false); |
2377 | nx_put_header(out, move->dst.field->id, 0, false); | |
73178f20 | 2378 | } |
bad8a439 | 2379 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2380 | } |
e9536ecb | 2381 | |
cab50449 | 2382 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2383 | parse_REG_MOVE(const char *arg, struct ofpbuf *ofpacts, |
2384 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2385 | { | |
2386 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); | |
21b2fa61 | 2387 | return nxm_parse_reg_move(move, arg); |
c2d936a4 | 2388 | } |
0f3f3c3d | 2389 | |
c2d936a4 BP |
2390 | static void |
2391 | format_REG_MOVE(const struct ofpact_reg_move *a, struct ds *s) | |
2392 | { | |
2393 | nxm_format_reg_move(a, s); | |
2394 | } | |
2395 | \f | |
7eb4b1f1 BP |
2396 | /* Action structure for OFPAT12_SET_FIELD. */ |
2397 | struct ofp12_action_set_field { | |
2398 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2399 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2400 | ||
2401 | /* Followed by: | |
2402 | * - An OXM header, value, and (in OpenFlow 1.5+) 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[4]; | |
2407 | }; | |
2408 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2409 | ||
c2d936a4 BP |
2410 | /* Action structure for NXAST_REG_LOAD. |
2411 | * | |
2412 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2413 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2414 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2415 | * bit, and so on. | |
2416 | * | |
2417 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2418 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2419 | * loading them. | |
2420 | * | |
2421 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2422 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2423 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2424 | * also stored as one less than its true value: | |
2425 | * | |
2426 | * 15 6 5 0 | |
2427 | * +------------------------------+------------------+ | |
2428 | * | ofs | n_bits - 1 | | |
2429 | * +------------------------------+------------------+ | |
2430 | * | |
2431 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2432 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2433 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2434 | * OFPBAC_BAD_ARGUMENT. | |
2435 | */ | |
2436 | struct nx_action_reg_load { | |
2437 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2438 | ovs_be16 len; /* Length is 24. */ | |
2439 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2440 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2441 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2442 | ovs_be32 dst; /* Destination register. */ | |
2443 | ovs_be64 value; /* Immediate value. */ | |
2444 | }; | |
2445 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2446 | |
aad28f47 BP |
2447 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2448 | * followed by: | |
bad8a439 | 2449 | * |
aad28f47 BP |
2450 | * - An NXM/OXM header, value, and optionally a mask. |
2451 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2452 | * | |
2453 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2454 | |
c2d936a4 | 2455 | static enum ofperr |
7eb4b1f1 BP |
2456 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
2457 | bool may_mask, struct ofpbuf *ofpacts) | |
7fdb60a7 | 2458 | { |
0a2869d5 | 2459 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2460 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2461 | |
128684a6 JR |
2462 | union mf_value value, mask; |
2463 | const struct mf_field *field; | |
2464 | enum ofperr error = nx_pull_entry(&b, &field, &value, | |
2465 | may_mask ? &mask : NULL); | |
178742f9 | 2466 | if (error) { |
178742f9 BP |
2467 | return (error == OFPERR_OFPBMC_BAD_MASK |
2468 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2469 | : error); | |
c2d936a4 | 2470 | } |
7eb4b1f1 | 2471 | if (!may_mask) { |
128684a6 | 2472 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2473 | } |
178742f9 | 2474 | |
6fd6ed71 | 2475 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2476 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2477 | } | |
7fdb60a7 | 2478 | |
178742f9 BP |
2479 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2480 | * Set-Field. */ | |
128684a6 | 2481 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2482 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2483 | } |
178742f9 | 2484 | |
c2d936a4 | 2485 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2486 | if (!field->writable) { |
178742f9 | 2487 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2488 | field->name); |
c2d936a4 BP |
2489 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2490 | } | |
c2d936a4 | 2491 | |
d3cb080e | 2492 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2493 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2494 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2495 | if (!mf_is_value_valid(field, &value) |
2496 | || (field->id == MFF_VLAN_VID | |
2497 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2498 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2499 | struct ds ds = DS_EMPTY_INITIALIZER; |
128684a6 | 2500 | mf_format(field, &value, NULL, &ds); |
c2d936a4 | 2501 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2502 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2503 | ds_destroy(&ds); |
2504 | ||
2505 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2506 | } |
128684a6 JR |
2507 | |
2508 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2509 | return 0; |
7fdb60a7 SH |
2510 | } |
2511 | ||
7eb4b1f1 BP |
2512 | static enum ofperr |
2513 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2514 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2515 | struct ofpbuf *ofpacts) |
2516 | { | |
2517 | return decode_ofpat_set_field(oasf, false, ofpacts); | |
2518 | } | |
2519 | ||
2520 | static enum ofperr | |
2521 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2522 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2523 | struct ofpbuf *ofpacts) |
2524 | { | |
2525 | return decode_ofpat_set_field(oasf, true, ofpacts); | |
2526 | } | |
2527 | ||
2528 | static enum ofperr | |
2529 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2530 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2531 | struct ofpbuf *out) |
2532 | { | |
7eb4b1f1 BP |
2533 | struct mf_subfield dst; |
2534 | enum ofperr error; | |
2535 | ||
7eb4b1f1 BP |
2536 | dst.field = mf_from_nxm_header(ntohl(narl->dst)); |
2537 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); | |
2538 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
2539 | error = mf_check_dst(&dst, NULL); | |
2540 | if (error) { | |
2541 | return error; | |
2542 | } | |
2543 | ||
2544 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2545 | * narl->value. */ | |
2546 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2547 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2548 | } | |
2549 | ||
128684a6 JR |
2550 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2551 | NULL); | |
7eb4b1f1 | 2552 | bitwise_put(ntohll(narl->value), |
128684a6 | 2553 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2554 | dst.n_bits); |
2555 | bitwise_put(UINT64_MAX, | |
128684a6 | 2556 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2557 | dst.n_bits); |
7eb4b1f1 BP |
2558 | return 0; |
2559 | } | |
2560 | ||
bad8a439 | 2561 | static enum ofperr |
aad28f47 | 2562 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
f3cd3ac7 | 2563 | enum ofp_version ofp_version OVS_UNUSED, |
bad8a439 BP |
2564 | struct ofpbuf *out) |
2565 | { | |
aad28f47 BP |
2566 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2567 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2568 | |
128684a6 JR |
2569 | union mf_value value, mask; |
2570 | const struct mf_field *field; | |
2571 | enum ofperr error = nx_pull_entry(&b, &field, &value, &mask); | |
bad8a439 BP |
2572 | if (error) { |
2573 | return error; | |
2574 | } | |
6fd6ed71 | 2575 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2576 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2577 | } | |
2578 | ||
128684a6 JR |
2579 | if (!field->writable) { |
2580 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2581 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2582 | } | |
128684a6 JR |
2583 | |
2584 | /* Put value and mask. */ | |
2585 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2586 | return 0; |
2587 | } | |
2588 | ||
7fdb60a7 | 2589 | static void |
128684a6 JR |
2590 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2591 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2592 | { |
7eb4b1f1 | 2593 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2594 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2595 | size_t start_ofs = openflow->size; |
178742f9 | 2596 | union mf_value value; |
7fdb60a7 | 2597 | |
178742f9 | 2598 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2599 | |
7eb4b1f1 | 2600 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2601 | openflow->size = openflow->size - sizeof oasf->pad; |
178742f9 BP |
2602 | nx_put_entry(openflow, field, ofp_version, &value, NULL); |
2603 | pad_ofpat(openflow, start_ofs); | |
7fdb60a7 SH |
2604 | } |
2605 | ||
4b684612 BP |
2606 | static void |
2607 | put_reg_load(struct ofpbuf *openflow, | |
2608 | const struct mf_subfield *dst, uint64_t value) | |
2609 | { | |
2610 | ovs_assert(dst->n_bits <= 64); | |
2611 | ||
2612 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2613 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
2614 | narl->dst = htonl(mf_nxm_header(dst->field->id)); | |
2615 | narl->value = htonll(value); | |
2616 | } | |
2617 | ||
7eb4b1f1 BP |
2618 | static bool |
2619 | next_load_segment(const struct ofpact_set_field *sf, | |
2620 | struct mf_subfield *dst, uint64_t *value) | |
2621 | { | |
fa078489 BP |
2622 | int n_bits = sf->field->n_bits; |
2623 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2624 | int start = dst->ofs + dst->n_bits; |
2625 | ||
fa078489 | 2626 | if (start < n_bits) { |
7eb4b1f1 | 2627 | dst->field = sf->field; |
128684a6 JR |
2628 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2629 | n_bits); | |
fa078489 | 2630 | if (dst->ofs < n_bits) { |
128684a6 JR |
2631 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2632 | dst->ofs + 1, | |
fa078489 | 2633 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2634 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2635 | return true; |
2636 | } | |
2637 | } | |
2638 | return false; | |
2639 | } | |
178742f9 | 2640 | |
7eb4b1f1 | 2641 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2642 | static void |
c2d936a4 | 2643 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2644 | { |
bad8a439 | 2645 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2646 | * experimenter OXM or is variable length (or if it came in as |
2647 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2648 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2649 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2650 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 2651 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 2652 | size_t start_ofs = openflow->size; |
bad8a439 | 2653 | |
aad28f47 BP |
2654 | eah = put_NXAST_REG_LOAD2(openflow); |
2655 | openflow->size = openflow->size - sizeof eah->pad; | |
128684a6 JR |
2656 | nx_put_entry(openflow, sf->field->id, 0, sf->value, |
2657 | ofpact_set_field_mask(sf)); | |
bad8a439 BP |
2658 | pad_ofpat(openflow, start_ofs); |
2659 | } else { | |
2660 | struct mf_subfield dst; | |
2661 | uint64_t value; | |
7eb4b1f1 | 2662 | |
bad8a439 BP |
2663 | dst.ofs = dst.n_bits = 0; |
2664 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 2665 | put_reg_load(openflow, &dst, value); |
bad8a439 | 2666 | } |
7fdb60a7 SH |
2667 | } |
2668 | } | |
2669 | ||
7eb4b1f1 BP |
2670 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2671 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 2672 | * |
c2d936a4 BP |
2673 | * We check only meta-flow types that can appear within set field actions and |
2674 | * that have a mapping to compatible action types. These struct mf_field | |
2675 | * definitions have a defined OXM or NXM header value and specify the field as | |
2676 | * writable. */ | |
2677 | static void | |
2678 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
2679 | enum ofp_version ofp_version, | |
2680 | struct ofpbuf *out) | |
7fdb60a7 | 2681 | { |
c2d936a4 BP |
2682 | switch ((int) sf->field->id) { |
2683 | case MFF_VLAN_TCI: { | |
128684a6 | 2684 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
2685 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
2686 | uint16_t vid = vlan_tci_to_vid(tci); | |
2687 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
2688 | ||
2689 | if (ofp_version < OFP11_VERSION) { | |
2690 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
2691 | * | |
2692 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2693 | * If CFI=0, strip VLAN header, if any. | |
2694 | */ | |
2695 | if (cfi) { | |
2696 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2697 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
2698 | } else { | |
2699 | put_OFPAT10_STRIP_VLAN(out); | |
2700 | } | |
2701 | } else { | |
2702 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
2703 | * | |
2704 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2705 | * OpenFlow 1.1 set actions only apply if the packet | |
2706 | * already has VLAN tags. To be sure that is the case | |
2707 | * we have to push a VLAN header. As we do not support | |
2708 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
2709 | * header already exists. This may backfire, however, | |
2710 | * when we start supporting multiple layers of VLANs. | |
2711 | * If CFI=0, strip VLAN header, if any. | |
2712 | */ | |
2713 | if (cfi) { | |
2714 | /* Push a VLAN tag, if one was not seen at action validation | |
2715 | * time. */ | |
2716 | if (!sf->flow_has_vlan) { | |
2717 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
2718 | } | |
2719 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2720 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
2721 | } else { | |
2722 | /* If the flow did not match on vlan, we have no way of | |
2723 | * knowing if the vlan tag exists, so we must POP just to be | |
2724 | * sure. */ | |
2725 | put_OFPAT11_POP_VLAN(out); | |
2726 | } | |
2727 | } | |
2728 | break; | |
2729 | } | |
7fdb60a7 | 2730 | |
c2d936a4 | 2731 | case MFF_VLAN_VID: { |
128684a6 | 2732 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
2733 | if (ofp_version == OFP10_VERSION) { |
2734 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2735 | } else { | |
2736 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2737 | } | |
2738 | break; | |
2739 | } | |
2740 | ||
2741 | case MFF_VLAN_PCP: | |
2742 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 2743 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 2744 | } else { |
128684a6 | 2745 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
2746 | } |
2747 | break; | |
2748 | ||
2749 | case MFF_ETH_SRC: | |
128684a6 | 2750 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2751 | break; |
2752 | ||
2753 | case MFF_ETH_DST: | |
128684a6 | 2754 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2755 | break; |
2756 | ||
2757 | case MFF_IPV4_SRC: | |
128684a6 | 2758 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2759 | break; |
2760 | ||
2761 | case MFF_IPV4_DST: | |
128684a6 | 2762 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2763 | break; |
2764 | ||
2765 | case MFF_IP_DSCP: | |
128684a6 | 2766 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
2767 | break; |
2768 | ||
2769 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 2770 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
2771 | break; |
2772 | ||
4b684612 | 2773 | case MFF_IP_ECN: |
128684a6 | 2774 | put_OFPAT11_SET_NW_ECN(out, sf->value->u8); |
4b684612 BP |
2775 | break; |
2776 | ||
c2d936a4 BP |
2777 | case MFF_TCP_SRC: |
2778 | case MFF_UDP_SRC: | |
128684a6 | 2779 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
2780 | break; |
2781 | ||
2782 | case MFF_TCP_DST: | |
2783 | case MFF_UDP_DST: | |
128684a6 | 2784 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
2785 | break; |
2786 | ||
2787 | default: | |
2788 | set_field_to_nxast(sf, out); | |
2789 | break; | |
7fdb60a7 SH |
2790 | } |
2791 | } | |
2792 | ||
7eb4b1f1 BP |
2793 | static void |
2794 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
2795 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2796 | { | |
2797 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 2798 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
2799 | |
2800 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 2801 | out->size = out->size - sizeof oasf->pad; |
128684a6 JR |
2802 | nx_put_entry(out, sf->field->id, ofp_version, sf->value, |
2803 | ofpact_set_field_mask(sf)); | |
7eb4b1f1 BP |
2804 | pad_ofpat(out, start_ofs); |
2805 | } | |
2806 | ||
c2d936a4 BP |
2807 | static void |
2808 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
2809 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2810 | { | |
7eb4b1f1 | 2811 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
2812 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
2813 | * entirely). */ | |
7eb4b1f1 | 2814 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
2815 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
2816 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
2817 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
2818 | set_field_to_nxast(sf, out); |
2819 | } else if (ofp_version < OFP12_VERSION) { | |
2820 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 2821 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 2822 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
2823 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
2824 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
2825 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 2826 | } else { |
7eb4b1f1 BP |
2827 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
2828 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
2829 | * so encode it as reg_load. */ | |
2830 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
2831 | } |
2832 | } | |
2833 | ||
36b43aa6 JS |
2834 | /* Parses the input argument 'arg' into the key, value, and delimiter |
2835 | * components that are common across the reg_load and set_field action format. | |
2836 | * | |
2837 | * With an argument like "1->metadata", sets the following pointers to | |
2838 | * point within 'arg': | |
2839 | * key: "metadata" | |
2840 | * value: "1" | |
2841 | * delim: "->" | |
2842 | * | |
2843 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2844 | * error. The caller is responsible for freeing the returned string. */ | |
2845 | static char * OVS_WARN_UNUSED_RESULT | |
2846 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
2847 | { | |
2848 | char *value_end; | |
2849 | ||
2850 | *value = arg; | |
2851 | value_end = strstr(arg, "->"); | |
2852 | *key = value_end + strlen("->"); | |
2853 | if (delim) { | |
2854 | *delim = value_end; | |
2855 | } | |
2856 | ||
2857 | if (!value_end) { | |
2858 | return xasprintf("%s: missing `->'", arg); | |
2859 | } | |
2860 | if (strlen(value_end) <= strlen("->")) { | |
2861 | return xasprintf("%s: missing field name following `->'", arg); | |
2862 | } | |
2863 | ||
2864 | return NULL; | |
2865 | } | |
2866 | ||
c2d936a4 BP |
2867 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
2868 | * action to 'ofpacts'. | |
2869 | * | |
2870 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2871 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2872 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2873 | set_field_parse__(char *arg, struct ofpbuf *ofpacts, |
2874 | enum ofputil_protocol *usable_protocols) | |
7fdb60a7 | 2875 | { |
c2d936a4 BP |
2876 | char *value; |
2877 | char *delim; | |
2878 | char *key; | |
2879 | const struct mf_field *mf; | |
128684a6 | 2880 | union mf_value sf_value, sf_mask; |
c2d936a4 | 2881 | char *error; |
7fdb60a7 | 2882 | |
36b43aa6 JS |
2883 | error = set_field_split_str(arg, &key, &value, &delim); |
2884 | if (error) { | |
2885 | return error; | |
c2d936a4 | 2886 | } |
e3f8f887 | 2887 | |
c2d936a4 BP |
2888 | mf = mf_from_name(key); |
2889 | if (!mf) { | |
2890 | return xasprintf("%s is not a valid OXM field name", key); | |
2891 | } | |
2892 | if (!mf->writable) { | |
2893 | return xasprintf("%s is read-only", key); | |
2894 | } | |
128684a6 | 2895 | |
c2d936a4 | 2896 | delim[0] = '\0'; |
128684a6 | 2897 | error = mf_parse(mf, value, &sf_value, &sf_mask); |
7fdb60a7 SH |
2898 | if (error) { |
2899 | return error; | |
2900 | } | |
2901 | ||
128684a6 | 2902 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 2903 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
2904 | } |
2905 | ||
a4ce8b25 | 2906 | *usable_protocols &= mf->usable_protocols_exact; |
128684a6 JR |
2907 | |
2908 | ofpact_put_set_field(ofpacts, mf, &sf_value, &sf_mask); | |
c2d936a4 | 2909 | return NULL; |
7fdb60a7 SH |
2910 | } |
2911 | ||
c2d936a4 BP |
2912 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
2913 | * action to 'ofpacts'. | |
2914 | * | |
2915 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2916 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2917 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2918 | parse_SET_FIELD(const char *arg, struct ofpbuf *ofpacts, |
2919 | enum ofputil_protocol *usable_protocols) | |
2920 | { | |
2921 | char *copy = xstrdup(arg); | |
2922 | char *error = set_field_parse__(copy, ofpacts, usable_protocols); | |
2923 | free(copy); | |
2924 | return error; | |
2925 | } | |
a359d5ad | 2926 | |
cab50449 | 2927 | static char * OVS_WARN_UNUSED_RESULT |
7eb4b1f1 BP |
2928 | parse_reg_load(char *arg, struct ofpbuf *ofpacts) |
2929 | { | |
7eb4b1f1 | 2930 | struct mf_subfield dst; |
36b43aa6 | 2931 | char *key, *value_str; |
81270993 | 2932 | union mf_value value; |
7eb4b1f1 BP |
2933 | char *error; |
2934 | ||
36b43aa6 JS |
2935 | error = set_field_split_str(arg, &key, &value_str, NULL); |
2936 | if (error) { | |
2937 | return error; | |
7eb4b1f1 | 2938 | } |
36b43aa6 JS |
2939 | |
2940 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
2941 | if (error) { |
2942 | return error; | |
2943 | } | |
2944 | ||
81270993 JS |
2945 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
2946 | &key)) { | |
2947 | return xasprintf("%s: cannot parse integer value", arg); | |
2948 | } | |
2949 | ||
2950 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
2951 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
2952 | struct ds ds; | |
2953 | ||
2954 | ds_init(&ds); | |
2955 | mf_format(dst.field, &value, NULL, &ds); | |
2956 | error = xasprintf("%s: value %s does not fit into %d bits", | |
2957 | arg, ds_cstr(&ds), dst.n_bits); | |
2958 | ds_destroy(&ds); | |
2959 | return error; | |
7eb4b1f1 BP |
2960 | } |
2961 | ||
128684a6 JR |
2962 | struct ofpact_set_field *sf = ofpact_put_reg_load(ofpacts, dst.field, NULL, |
2963 | NULL); | |
81270993 | 2964 | |
128684a6 JR |
2965 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
2966 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
2967 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
2968 | dst.n_bits); | |
7eb4b1f1 BP |
2969 | return NULL; |
2970 | } | |
2971 | ||
c2d936a4 BP |
2972 | static void |
2973 | format_SET_FIELD(const struct ofpact_set_field *a, struct ds *s) | |
2974 | { | |
7eb4b1f1 BP |
2975 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
2976 | struct mf_subfield dst; | |
2977 | uint64_t value; | |
2978 | ||
2979 | dst.ofs = dst.n_bits = 0; | |
2980 | while (next_load_segment(a, &dst, &value)) { | |
b1c5bf1f QM |
2981 | ds_put_format(s, "%sload:%s%#"PRIx64"%s->%s", |
2982 | colors.special, colors.end, value, | |
2983 | colors.special, colors.end); | |
7eb4b1f1 BP |
2984 | mf_format_subfield(&dst, s); |
2985 | ds_put_char(s, ','); | |
2986 | } | |
2987 | ds_chomp(s, ','); | |
2988 | } else { | |
b1c5bf1f | 2989 | ds_put_format(s, "%sset_field:%s", colors.special, colors.end); |
128684a6 | 2990 | mf_format(a->field, a->value, ofpact_set_field_mask(a), s); |
b1c5bf1f QM |
2991 | ds_put_format(s, "%s->%s%s", |
2992 | colors.special, colors.end, a->field->name); | |
7eb4b1f1 BP |
2993 | } |
2994 | } | |
2995 | ||
128684a6 JR |
2996 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
2997 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
2998 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
2999 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3000 | struct ofpact_set_field * | |
3001 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3002 | const void *value, const void *mask) | |
3003 | { | |
3004 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3005 | sf->field = field; | |
3006 | ||
3007 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3008 | * caller may fill in the value and mask itself. */ | |
3009 | if (value) { | |
3010 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3011 | sf = ofpacts->header; | |
3012 | memcpy(sf->value, value, field->n_bytes); | |
3013 | if (mask) { | |
3014 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3015 | } else { | |
3016 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3017 | } | |
3018 | } else { | |
3019 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3020 | sf = ofpacts->header; | |
3021 | } | |
3022 | /* Update length. */ | |
3023 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3024 | ||
3025 | return sf; | |
3026 | } | |
3027 | ||
7eb4b1f1 BP |
3028 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3029 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3030 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3031 | * that was the way that the action was expressed when it came into OVS or for | |
3032 | * backward compatibility. */ | |
3033 | struct ofpact_set_field * | |
128684a6 JR |
3034 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3035 | const void *value, const void *mask) | |
7eb4b1f1 | 3036 | { |
128684a6 JR |
3037 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3038 | mask); | |
7eb4b1f1 | 3039 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3040 | |
7eb4b1f1 | 3041 | return sf; |
c2d936a4 | 3042 | } |
128684a6 JR |
3043 | |
3044 | struct ofpact_set_field * | |
3045 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3046 | const void *value, const void *mask) | |
3047 | { | |
3048 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3049 | mask); | |
3050 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3051 | ||
3052 | return sf; | |
3053 | } | |
3054 | ||
c2d936a4 BP |
3055 | \f |
3056 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3057 | * | |
3058 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3059 | * top of the stack. | |
3060 | */ | |
3061 | struct nx_action_stack { | |
3062 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3063 | ovs_be16 len; /* Length is 16. */ | |
3064 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3065 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3066 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3067 | /* Followed by: |
3068 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3069 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3070 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3071 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3072 | }; |
c2d936a4 | 3073 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3074 | |
bad8a439 | 3075 | static enum ofperr |
c2d936a4 BP |
3076 | decode_stack_action(const struct nx_action_stack *nasp, |
3077 | struct ofpact_stack *stack_action) | |
a359d5ad | 3078 | { |
c2d936a4 | 3079 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3080 | |
0a2869d5 | 3081 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3082 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
0a2869d5 BP |
3083 | enum ofperr error = nx_pull_header(&b, &stack_action->subfield.field, |
3084 | NULL); | |
bad8a439 BP |
3085 | if (error) { |
3086 | return error; | |
3087 | } | |
6fd6ed71 | 3088 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3089 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3090 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3091 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3092 | } | |
3093 | ||
3094 | return 0; | |
a359d5ad IY |
3095 | } |
3096 | ||
c2d936a4 BP |
3097 | static enum ofperr |
3098 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 JS |
3099 | enum ofp_version ofp_version OVS_UNUSED, |
3100 | struct ofpbuf *ofpacts) | |
a359d5ad | 3101 | { |
c2d936a4 | 3102 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
bad8a439 BP |
3103 | enum ofperr error = decode_stack_action(nasp, push); |
3104 | return error ? error : nxm_stack_push_check(push, NULL); | |
a359d5ad IY |
3105 | } |
3106 | ||
c2d936a4 BP |
3107 | static enum ofperr |
3108 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3109 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 3110 | struct ofpbuf *ofpacts) |
084c53de | 3111 | { |
c2d936a4 | 3112 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
bad8a439 BP |
3113 | enum ofperr error = decode_stack_action(nasp, pop); |
3114 | return error ? error : nxm_stack_pop_check(pop, NULL); | |
084c53de BP |
3115 | } |
3116 | ||
c2d936a4 BP |
3117 | static void |
3118 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3119 | struct nx_action_stack *nasp) | |
c0621c39 | 3120 | { |
bad8a439 BP |
3121 | struct ofpbuf b; |
3122 | ovs_be16 n_bits; | |
3123 | ||
c2d936a4 | 3124 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3125 | |
3126 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3127 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
3128 | nx_put_header(&b, stack_action->subfield.field->id, 0, false); | |
3129 | n_bits = htons(stack_action->subfield.n_bits); | |
3130 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3131 | } |
3132 | ||
c2d936a4 BP |
3133 | static void |
3134 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3135 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3136 | { | |
3137 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3138 | } | |
8e97815e | 3139 | |
c2d936a4 BP |
3140 | static void |
3141 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3142 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3143 | { |
c2d936a4 BP |
3144 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3145 | } | |
8e97815e | 3146 | |
cab50449 | 3147 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3148 | parse_STACK_PUSH(char *arg, struct ofpbuf *ofpacts, |
3149 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3150 | { | |
3151 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(ofpacts), arg); | |
3152 | } | |
8e97815e | 3153 | |
cab50449 | 3154 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3155 | parse_STACK_POP(char *arg, struct ofpbuf *ofpacts, |
3156 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3157 | { | |
3158 | return nxm_parse_stack_action(ofpact_put_STACK_POP(ofpacts), arg); | |
8e97815e BP |
3159 | } |
3160 | ||
c2d936a4 BP |
3161 | static void |
3162 | format_STACK_PUSH(const struct ofpact_stack *a, struct ds *s) | |
8e97815e | 3163 | { |
c2d936a4 BP |
3164 | nxm_format_stack_push(a, s); |
3165 | } | |
8e97815e | 3166 | |
c2d936a4 BP |
3167 | static void |
3168 | format_STACK_POP(const struct ofpact_stack *a, struct ds *s) | |
3169 | { | |
3170 | nxm_format_stack_pop(a, s); | |
3171 | } | |
3172 | \f | |
3173 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3174 | * | |
3175 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3176 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3177 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3178 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3179 | * | |
3180 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3181 | * sent only to controllers with id 0.) | |
3182 | */ | |
3183 | struct nx_action_cnt_ids { | |
3184 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3185 | ovs_be16 len; /* Length including slaves. */ | |
3186 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3187 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3188 | ||
3189 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3190 | uint8_t zeros[4]; /* Must be zero. */ | |
3191 | ||
3192 | /* Followed by 1 or more controller ids. | |
3193 | * | |
3194 | * uint16_t cnt_ids[]; // Controller ids. | |
3195 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3196 | */ | |
3197 | }; | |
3198 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3199 | ||
3200 | static enum ofperr | |
3201 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3202 | { | |
3203 | uint16_t id = 0; | |
3204 | struct ofpact_cnt_ids *ids; | |
3205 | enum ofperr error = 0; | |
3206 | ||
3207 | ids = ofpact_put_DEC_TTL(out); | |
3208 | ids->n_controllers = 1; | |
3209 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3210 | ids = out->header; |
ce058104 | 3211 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3212 | return error; |
3213 | } | |
3214 | ||
3215 | static enum ofperr | |
3216 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3217 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3218 | struct ofpbuf *out) |
3219 | { | |
3220 | struct ofpact_cnt_ids *ids; | |
3221 | size_t ids_size; | |
3222 | int i; | |
3223 | ||
3224 | ids = ofpact_put_DEC_TTL(out); | |
3225 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3226 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3227 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3228 | ||
3229 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3230 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3231 | } |
c2d936a4 BP |
3232 | |
3233 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3234 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3235 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
3236 | "are required for %"PRIu16" controllers.", | |
3237 | ids_size, ids->n_controllers * sizeof(ovs_be16), | |
3238 | ids->n_controllers); | |
3239 | return OFPERR_OFPBAC_BAD_LEN; | |
3240 | } | |
3241 | ||
3242 | for (i = 0; i < ids->n_controllers; i++) { | |
3243 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3244 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3245 | ids = out->header; |
c2d936a4 BP |
3246 | } |
3247 | ||
ce058104 | 3248 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3249 | |
3250 | return 0; | |
8e97815e BP |
3251 | } |
3252 | ||
c2d936a4 BP |
3253 | static void |
3254 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3255 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3256 | { |
c2d936a4 BP |
3257 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3258 | || dec_ttl->n_controllers != 1 | |
3259 | || dec_ttl->cnt_ids[0] != 0) { | |
3260 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3261 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3262 | ovs_be16 *ids; | |
3263 | size_t i; | |
8e97815e | 3264 | |
c2d936a4 BP |
3265 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3266 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3267 | ||
3268 | ids = ofpbuf_put_zeros(out, ids_len); | |
3269 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3270 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3271 | } |
c2d936a4 BP |
3272 | } else { |
3273 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3274 | } |
8e97815e BP |
3275 | } |
3276 | ||
c2d936a4 BP |
3277 | static void |
3278 | parse_noargs_dec_ttl(struct ofpbuf *ofpacts) | |
d01c980f | 3279 | { |
c2d936a4 BP |
3280 | struct ofpact_cnt_ids *ids; |
3281 | uint16_t id = 0; | |
3282 | ||
3283 | ofpact_put_DEC_TTL(ofpacts); | |
3284 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3285 | ids = ofpacts->header; |
c2d936a4 | 3286 | ids->n_controllers++; |
ce058104 | 3287 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
d01c980f BP |
3288 | } |
3289 | ||
cab50449 | 3290 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3291 | parse_DEC_TTL(char *arg, struct ofpbuf *ofpacts, |
3292 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
d01c980f | 3293 | { |
c2d936a4 BP |
3294 | if (*arg == '\0') { |
3295 | parse_noargs_dec_ttl(ofpacts); | |
3296 | } else { | |
3297 | struct ofpact_cnt_ids *ids; | |
3298 | char *cntr; | |
3299 | ||
3300 | ids = ofpact_put_DEC_TTL(ofpacts); | |
3301 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3302 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3303 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3304 | uint16_t id = atoi(cntr); | |
3305 | ||
3306 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3307 | ids = ofpacts->header; |
c2d936a4 BP |
3308 | ids->n_controllers++; |
3309 | } | |
3310 | if (!ids->n_controllers) { | |
3311 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3312 | "id."); | |
3313 | } | |
ce058104 | 3314 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
c2d936a4 BP |
3315 | } |
3316 | return NULL; | |
d01c980f BP |
3317 | } |
3318 | ||
c2d936a4 BP |
3319 | static void |
3320 | format_DEC_TTL(const struct ofpact_cnt_ids *a, struct ds *s) | |
d01c980f | 3321 | { |
c2d936a4 | 3322 | size_t i; |
d01c980f | 3323 | |
b1c5bf1f | 3324 | ds_put_format(s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3325 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
b1c5bf1f | 3326 | ds_put_format(s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3327 | for (i = 0; i < a->n_controllers; i++) { |
3328 | if (i) { | |
3329 | ds_put_cstr(s, ","); | |
d01c980f | 3330 | } |
c2d936a4 BP |
3331 | ds_put_format(s, "%"PRIu16, a->cnt_ids[i]); |
3332 | } | |
b1c5bf1f | 3333 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3334 | } |
3335 | } | |
c2d936a4 BP |
3336 | \f |
3337 | /* Set MPLS label actions. */ | |
d01c980f BP |
3338 | |
3339 | static enum ofperr | |
f3cd3ac7 JS |
3340 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3341 | enum ofp_version ofp_version OVS_UNUSED, | |
3342 | struct ofpbuf *out) | |
d01c980f | 3343 | { |
c2d936a4 BP |
3344 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3345 | return 0; | |
3346 | } | |
d01c980f | 3347 | |
c2d936a4 BP |
3348 | static void |
3349 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3350 | enum ofp_version ofp_version, | |
3351 | struct ofpbuf *out) | |
3352 | { | |
3353 | if (ofp_version < OFP12_VERSION) { | |
3354 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3355 | } else { | |
128684a6 | 3356 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3357 | } |
c2d936a4 | 3358 | } |
d01c980f | 3359 | |
cab50449 | 3360 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3361 | parse_SET_MPLS_LABEL(char *arg, struct ofpbuf *ofpacts, |
3362 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3363 | { | |
3364 | struct ofpact_mpls_label *mpls_label = ofpact_put_SET_MPLS_LABEL(ofpacts); | |
3365 | if (*arg == '\0') { | |
3366 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3367 | } |
c2d936a4 BP |
3368 | |
3369 | mpls_label->label = htonl(atoi(arg)); | |
3370 | return NULL; | |
d01c980f BP |
3371 | } |
3372 | ||
3373 | static void | |
c2d936a4 | 3374 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, struct ds *s) |
d01c980f | 3375 | { |
b1c5bf1f QM |
3376 | ds_put_format(s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
3377 | colors.paren, colors.end, ntohl(a->label), | |
3378 | colors.paren, colors.end); | |
d01c980f | 3379 | } |
c2d936a4 BP |
3380 | \f |
3381 | /* Set MPLS TC actions. */ | |
d01c980f | 3382 | |
c2d936a4 | 3383 | static enum ofperr |
f3cd3ac7 JS |
3384 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3385 | enum ofp_version ofp_version OVS_UNUSED, | |
3386 | struct ofpbuf *out) | |
d01c980f | 3387 | { |
c2d936a4 BP |
3388 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3389 | return 0; | |
3390 | } | |
d01c980f | 3391 | |
c2d936a4 BP |
3392 | static void |
3393 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3394 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3395 | { | |
3396 | if (ofp_version < OFP12_VERSION) { | |
3397 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3398 | } else { | |
128684a6 | 3399 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3400 | } |
c2d936a4 | 3401 | } |
8f2cded4 | 3402 | |
cab50449 | 3403 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3404 | parse_SET_MPLS_TC(char *arg, struct ofpbuf *ofpacts, |
3405 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3406 | { | |
3407 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(ofpacts); | |
d01c980f | 3408 | |
c2d936a4 BP |
3409 | if (*arg == '\0') { |
3410 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3411 | } |
3412 | ||
c2d936a4 BP |
3413 | mpls_tc->tc = atoi(arg); |
3414 | return NULL; | |
3415 | } | |
d01c980f | 3416 | |
c2d936a4 BP |
3417 | static void |
3418 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, struct ds *s) | |
3419 | { | |
b1c5bf1f QM |
3420 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3421 | colors.paren, colors.end, a->tc, | |
3422 | colors.paren, colors.end); | |
c2d936a4 BP |
3423 | } |
3424 | \f | |
3425 | /* Set MPLS TTL actions. */ | |
d01c980f | 3426 | |
c2d936a4 | 3427 | static enum ofperr |
f3cd3ac7 JS |
3428 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3429 | enum ofp_version ofp_version OVS_UNUSED, | |
3430 | struct ofpbuf *out) | |
c2d936a4 BP |
3431 | { |
3432 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3433 | return 0; | |
3434 | } | |
638a19b0 | 3435 | |
c2d936a4 BP |
3436 | static void |
3437 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3438 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3439 | { | |
3440 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3441 | } | |
638a19b0 | 3442 | |
c2d936a4 BP |
3443 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
3444 | * action to 'ofpacts'. | |
3445 | * | |
3446 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3447 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3448 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3449 | parse_SET_MPLS_TTL(char *arg, struct ofpbuf *ofpacts, |
3450 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3451 | { | |
3452 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(ofpacts); | |
d01c980f | 3453 | |
c2d936a4 BP |
3454 | if (*arg == '\0') { |
3455 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3456 | } |
7fdb60a7 | 3457 | |
c2d936a4 BP |
3458 | mpls_ttl->ttl = atoi(arg); |
3459 | return NULL; | |
3460 | } | |
4cceacb9 | 3461 | |
c2d936a4 BP |
3462 | static void |
3463 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, struct ds *s) | |
3464 | { | |
b1c5bf1f QM |
3465 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3466 | colors.paren, colors.end, a->ttl, | |
3467 | colors.paren, colors.end); | |
c2d936a4 BP |
3468 | } |
3469 | \f | |
3470 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3471 | |
c2d936a4 BP |
3472 | static enum ofperr |
3473 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3474 | { | |
3475 | ofpact_put_DEC_MPLS_TTL(out); | |
3476 | return 0; | |
3477 | } | |
8dd54666 | 3478 | |
c2d936a4 BP |
3479 | static void |
3480 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3481 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3482 | { | |
3483 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3484 | } | |
3485 | ||
cab50449 | 3486 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3487 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
3488 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3489 | { | |
3490 | ofpact_put_DEC_MPLS_TTL(ofpacts); | |
3491 | return NULL; | |
3492 | } | |
3493 | ||
3494 | static void | |
3495 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
3496 | { | |
b1c5bf1f | 3497 | ds_put_format(s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 BP |
3498 | } |
3499 | \f | |
3500 | /* Push MPLS label action. */ | |
3501 | ||
3502 | static enum ofperr | |
f3cd3ac7 JS |
3503 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3504 | enum ofp_version ofp_version OVS_UNUSED, | |
3505 | struct ofpbuf *out) | |
c2d936a4 BP |
3506 | { |
3507 | struct ofpact_push_mpls *oam; | |
3508 | ||
3509 | if (!eth_type_mpls(ethertype)) { | |
3510 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3511 | } |
c2d936a4 BP |
3512 | oam = ofpact_put_PUSH_MPLS(out); |
3513 | oam->ethertype = ethertype; | |
d01c980f | 3514 | |
c2d936a4 BP |
3515 | return 0; |
3516 | } | |
3517 | ||
3518 | static void | |
3519 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3520 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3521 | { | |
3522 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3523 | } | |
3524 | ||
cab50449 | 3525 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3526 | parse_PUSH_MPLS(char *arg, struct ofpbuf *ofpacts, |
3527 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3528 | { | |
3529 | uint16_t ethertype; | |
3530 | char *error; | |
3531 | ||
3532 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3533 | if (!error) { | |
3534 | ofpact_put_PUSH_MPLS(ofpacts)->ethertype = htons(ethertype); | |
d01c980f BP |
3535 | } |
3536 | return error; | |
3537 | } | |
c2d936a4 BP |
3538 | |
3539 | static void | |
3540 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, struct ds *s) | |
3541 | { | |
b1c5bf1f QM |
3542 | ds_put_format(s, "%spush_mpls:%s0x%04"PRIx16, |
3543 | colors.param, colors.end, ntohs(a->ethertype)); | |
c2d936a4 | 3544 | } |
d01c980f | 3545 | \f |
c2d936a4 BP |
3546 | /* Pop MPLS label action. */ |
3547 | ||
3548 | static enum ofperr | |
f3cd3ac7 JS |
3549 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3550 | enum ofp_version ofp_version OVS_UNUSED, | |
3551 | struct ofpbuf *out) | |
57ad4e9e | 3552 | { |
c2d936a4 BP |
3553 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3554 | return 0; | |
3555 | } | |
57ad4e9e | 3556 | |
c2d936a4 BP |
3557 | static void |
3558 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
3559 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3560 | { | |
3561 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
3562 | } | |
3563 | ||
cab50449 | 3564 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3565 | parse_POP_MPLS(char *arg, struct ofpbuf *ofpacts, |
3566 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3567 | { | |
3568 | uint16_t ethertype; | |
3569 | char *error; | |
3570 | ||
3571 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
3572 | if (!error) { | |
3573 | ofpact_put_POP_MPLS(ofpacts)->ethertype = htons(ethertype); | |
57ad4e9e | 3574 | } |
c2d936a4 | 3575 | return error; |
57ad4e9e BP |
3576 | } |
3577 | ||
ba2fe8e9 | 3578 | static void |
c2d936a4 | 3579 | format_POP_MPLS(const struct ofpact_pop_mpls *a, struct ds *s) |
ba2fe8e9 | 3580 | { |
b1c5bf1f QM |
3581 | ds_put_format(s, "%spop_mpls:%s0x%04"PRIx16, |
3582 | colors.param, colors.end, ntohs(a->ethertype)); | |
ba2fe8e9 | 3583 | } |
c2d936a4 BP |
3584 | \f |
3585 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 3586 | |
f25d0cf3 | 3587 | static enum ofperr |
f3cd3ac7 JS |
3588 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
3589 | enum ofp_version ofp_version OVS_UNUSED, | |
3590 | struct ofpbuf *out) | |
f25d0cf3 | 3591 | { |
c2d936a4 BP |
3592 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
3593 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
3594 | tunnel->tun_id = tun_id; | |
3595 | return 0; | |
3596 | } | |
f25d0cf3 | 3597 | |
c2d936a4 | 3598 | static enum ofperr |
f3cd3ac7 JS |
3599 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
3600 | enum ofp_version ofp_version OVS_UNUSED, | |
3601 | struct ofpbuf *out) | |
c2d936a4 BP |
3602 | { |
3603 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
3604 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
3605 | tunnel->tun_id = tun_id; | |
3606 | return 0; | |
3607 | } | |
f25d0cf3 | 3608 | |
c2d936a4 BP |
3609 | static void |
3610 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
3611 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3612 | { | |
3613 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 3614 | |
c2d936a4 BP |
3615 | if (ofp_version < OFP12_VERSION) { |
3616 | if (tun_id <= UINT32_MAX | |
3617 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
3618 | put_NXAST_SET_TUNNEL(out, tun_id); | |
3619 | } else { | |
3620 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 3621 | } |
c2d936a4 | 3622 | } else { |
128684a6 | 3623 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
3624 | } |
3625 | } | |
f25d0cf3 | 3626 | |
cab50449 | 3627 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3628 | parse_set_tunnel(char *arg, struct ofpbuf *ofpacts, |
3629 | enum ofp_raw_action_type raw) | |
3630 | { | |
3631 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 3632 | |
c2d936a4 BP |
3633 | tunnel = ofpact_put_SET_TUNNEL(ofpacts); |
3634 | tunnel->ofpact.raw = raw; | |
3635 | return str_to_u64(arg, &tunnel->tun_id); | |
3636 | } | |
8621547c | 3637 | |
cab50449 | 3638 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3639 | parse_SET_TUNNEL(char *arg, struct ofpbuf *ofpacts, |
3640 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3641 | { | |
3642 | return parse_set_tunnel(arg, ofpacts, NXAST_RAW_SET_TUNNEL); | |
3643 | } | |
8621547c | 3644 | |
c2d936a4 BP |
3645 | static void |
3646 | format_SET_TUNNEL(const struct ofpact_tunnel *a, struct ds *s) | |
3647 | { | |
b1c5bf1f | 3648 | ds_put_format(s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
3649 | (a->tun_id > UINT32_MAX |
3650 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 3651 | colors.end, a->tun_id); |
c2d936a4 BP |
3652 | } |
3653 | \f | |
3654 | /* Set queue action. */ | |
8621547c | 3655 | |
c2d936a4 | 3656 | static enum ofperr |
f3cd3ac7 JS |
3657 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
3658 | enum ofp_version ofp_version OVS_UNUSED, | |
3659 | struct ofpbuf *out) | |
c2d936a4 BP |
3660 | { |
3661 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
3662 | return 0; | |
3663 | } | |
8621547c | 3664 | |
c2d936a4 BP |
3665 | static void |
3666 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
3667 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3668 | { | |
3669 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
3670 | } | |
8621547c | 3671 | |
cab50449 | 3672 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3673 | parse_SET_QUEUE(char *arg, struct ofpbuf *ofpacts, |
3674 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3675 | { | |
3676 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(ofpacts)->queue_id); | |
3677 | } | |
8621547c | 3678 | |
c2d936a4 BP |
3679 | static void |
3680 | format_SET_QUEUE(const struct ofpact_queue *a, struct ds *s) | |
3681 | { | |
b1c5bf1f QM |
3682 | ds_put_format(s, "%sset_queue:%s%"PRIu32, |
3683 | colors.param, colors.end, a->queue_id); | |
c2d936a4 BP |
3684 | } |
3685 | \f | |
3686 | /* Pop queue action. */ | |
1e7db674 | 3687 | |
c2d936a4 BP |
3688 | static enum ofperr |
3689 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
3690 | { | |
3691 | ofpact_put_POP_QUEUE(out); | |
3692 | return 0; | |
3693 | } | |
f25d0cf3 | 3694 | |
c2d936a4 BP |
3695 | static void |
3696 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
3697 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3698 | { | |
3699 | put_NXAST_POP_QUEUE(out); | |
3700 | } | |
f25d0cf3 | 3701 | |
cab50449 | 3702 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3703 | parse_POP_QUEUE(const char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
3704 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3705 | { | |
3706 | ofpact_put_POP_QUEUE(ofpacts); | |
3707 | return NULL; | |
3708 | } | |
f25d0cf3 | 3709 | |
c2d936a4 BP |
3710 | static void |
3711 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
3712 | { | |
b1c5bf1f | 3713 | ds_put_format(s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 BP |
3714 | } |
3715 | \f | |
3716 | /* Action structure for NXAST_FIN_TIMEOUT. | |
3717 | * | |
3718 | * This action changes the idle timeout or hard timeout, or both, of this | |
3719 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
3720 | * When such a packet is observed, the action reduces the rule's idle timeout | |
3721 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
3722 | * action has no effect on an existing timeout that is already shorter than the | |
3723 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
3724 | * of zero has no effect on the respective timeout. | |
3725 | * | |
3726 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
3727 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
3728 | * receipt of the FIN or RST. | |
3729 | * | |
3730 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
3731 | * take a long time to expire. | |
3732 | * | |
3733 | * This action is intended for use with an OpenFlow rule that matches only a | |
3734 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
3735 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
3736 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
3737 | * early, which is not normally desirable. | |
3738 | */ | |
3739 | struct nx_action_fin_timeout { | |
3740 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3741 | ovs_be16 len; /* 16. */ | |
3742 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3743 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
3744 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
3745 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
3746 | ovs_be16 pad; /* Must be zero. */ | |
3747 | }; | |
3748 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 3749 | |
c2d936a4 BP |
3750 | static enum ofperr |
3751 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 3752 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3753 | struct ofpbuf *out) |
3754 | { | |
3755 | struct ofpact_fin_timeout *oft; | |
8621547c | 3756 | |
c2d936a4 BP |
3757 | oft = ofpact_put_FIN_TIMEOUT(out); |
3758 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
3759 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
3760 | return 0; | |
3761 | } | |
f25d0cf3 | 3762 | |
c2d936a4 BP |
3763 | static void |
3764 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
3765 | enum ofp_version ofp_version OVS_UNUSED, | |
3766 | struct ofpbuf *out) | |
3767 | { | |
3768 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
3769 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
3770 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
3771 | } | |
f25d0cf3 | 3772 | |
cab50449 | 3773 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3774 | parse_FIN_TIMEOUT(char *arg, struct ofpbuf *ofpacts, |
3775 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3776 | { | |
3777 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(ofpacts); | |
3778 | char *key, *value; | |
f25d0cf3 | 3779 | |
c2d936a4 BP |
3780 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
3781 | char *error; | |
b02475c5 | 3782 | |
c2d936a4 BP |
3783 | if (!strcmp(key, "idle_timeout")) { |
3784 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
3785 | } else if (!strcmp(key, "hard_timeout")) { | |
3786 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
3787 | } else { | |
3788 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
3789 | key); | |
8621547c | 3790 | } |
8dd54666 | 3791 | |
c2d936a4 BP |
3792 | if (error) { |
3793 | return error; | |
9cae45dc | 3794 | } |
9cae45dc | 3795 | } |
c2d936a4 BP |
3796 | return NULL; |
3797 | } | |
e3b56933 | 3798 | |
c2d936a4 BP |
3799 | static void |
3800 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, struct ds *s) | |
3801 | { | |
b1c5bf1f | 3802 | ds_put_format(s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 3803 | if (a->fin_idle_timeout) { |
b1c5bf1f QM |
3804 | ds_put_format(s, "%sidle_timeout=%s%"PRIu16",", |
3805 | colors.param, colors.end, a->fin_idle_timeout); | |
7e9f8266 | 3806 | } |
c2d936a4 | 3807 | if (a->fin_hard_timeout) { |
b1c5bf1f QM |
3808 | ds_put_format(s, "%shard_timeout=%s%"PRIu16",", |
3809 | colors.param, colors.end, a->fin_hard_timeout); | |
f25d0cf3 | 3810 | } |
c2d936a4 | 3811 | ds_chomp(s, ','); |
b1c5bf1f | 3812 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
f25d0cf3 | 3813 | } |
c2d936a4 BP |
3814 | \f |
3815 | /* Action structures for NXAST_RESUBMIT and NXAST_RESUBMIT_TABLE. | |
eca39bce | 3816 | * |
c2d936a4 | 3817 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 3818 | * |
c2d936a4 BP |
3819 | * - For NXAST_RESUBMIT_TABLE only, if the 'table' member is not 255, then |
3820 | * it specifies the table to search. | |
ca287d20 | 3821 | * |
c2d936a4 BP |
3822 | * - Otherwise (for NXAST_RESUBMIT_TABLE with a 'table' of 255, or for |
3823 | * NXAST_RESUBMIT regardless of 'table'), it searches the current flow | |
3824 | * table, that is, the OpenFlow flow table that contains the flow from | |
3825 | * which this action was obtained. If this action did not come from a | |
3826 | * flow table (e.g. it came from an OFPT_PACKET_OUT message), then table 0 | |
3827 | * is the current table. | |
3828 | * | |
3829 | * The flow table lookup uses a flow that may be slightly modified from the | |
3830 | * original lookup: | |
3831 | * | |
3832 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
3833 | * is used as the flow's in_port. | |
3834 | * | |
3835 | * - For NXAST_RESUBMIT_TABLE, if the 'in_port' member is not OFPP_IN_PORT, | |
3836 | * then its value is used as the flow's in_port. Otherwise, the original | |
3837 | * in_port is used. | |
3838 | * | |
3839 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
3840 | * resubmit action, then the flow is updated with the new values. | |
3841 | * | |
3842 | * Following the lookup, the original in_port is restored. | |
3843 | * | |
3844 | * If the modified flow matched in the flow table, then the corresponding | |
3845 | * actions are executed. Afterward, actions following the resubmit in the | |
3846 | * original set of actions, if any, are executed; any changes made to the | |
3847 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
3848 | * actions are executed, although the original in_port is restored. | |
3849 | * | |
3850 | * Resubmit actions may be used any number of times within a set of actions. | |
3851 | * | |
790c5d26 BP |
3852 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
3853 | * use, the implementation may limit nesting depth and the total number of | |
3854 | * resubmits: | |
3855 | * | |
3856 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
3857 | * | |
3858 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
3859 | * | |
3860 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
3861 | * | |
3862 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
3863 | * | |
3864 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
3865 | * | |
3866 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
3867 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
3868 | * did not impose any total limit). | |
c2d936a4 BP |
3869 | * |
3870 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE requires | |
3871 | * 'pad' to be all-bits-zero. | |
3872 | * | |
3873 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
3874 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. | |
3875 | */ | |
3876 | struct nx_action_resubmit { | |
3877 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3878 | ovs_be16 len; /* Length is 16. */ | |
3879 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3880 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
3881 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
3882 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
3883 | uint8_t pad[3]; | |
3884 | }; | |
3885 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
3886 | ||
3887 | static enum ofperr | |
f3cd3ac7 JS |
3888 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
3889 | enum ofp_version ofp_version OVS_UNUSED, | |
3890 | struct ofpbuf *out) | |
f25d0cf3 | 3891 | { |
c2d936a4 | 3892 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 3893 | |
c2d936a4 BP |
3894 | resubmit = ofpact_put_RESUBMIT(out); |
3895 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
3896 | resubmit->in_port = u16_to_ofp(port); | |
3897 | resubmit->table_id = 0xff; | |
3898 | return 0; | |
f25d0cf3 | 3899 | } |
4cceacb9 | 3900 | |
c2d936a4 BP |
3901 | static enum ofperr |
3902 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 3903 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 3904 | struct ofpbuf *out) |
ba2fe8e9 | 3905 | { |
c2d936a4 | 3906 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 3907 | |
c2d936a4 BP |
3908 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
3909 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
3910 | } | |
3911 | ||
3912 | resubmit = ofpact_put_RESUBMIT(out); | |
3913 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
3914 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
3915 | resubmit->table_id = nar->table; | |
3916 | return 0; | |
ba2fe8e9 BP |
3917 | } |
3918 | ||
c2d936a4 BP |
3919 | static void |
3920 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
3921 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 3922 | { |
c2d936a4 | 3923 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 3924 | |
c2d936a4 BP |
3925 | if (resubmit->table_id == 0xff |
3926 | && resubmit->ofpact.raw != NXAST_RAW_RESUBMIT_TABLE) { | |
3927 | put_NXAST_RESUBMIT(out, in_port); | |
3928 | } else { | |
3929 | struct nx_action_resubmit *nar = put_NXAST_RESUBMIT_TABLE(out); | |
3930 | nar->table = resubmit->table_id; | |
3931 | nar->in_port = htons(in_port); | |
3932 | } | |
3933 | } | |
6813ee7c | 3934 | |
cab50449 | 3935 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3936 | parse_RESUBMIT(char *arg, struct ofpbuf *ofpacts, |
3937 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3938 | { | |
3939 | struct ofpact_resubmit *resubmit; | |
3940 | char *in_port_s, *table_s; | |
6813ee7c | 3941 | |
c2d936a4 | 3942 | resubmit = ofpact_put_RESUBMIT(ofpacts); |
8f2cded4 | 3943 | |
c2d936a4 BP |
3944 | in_port_s = strsep(&arg, ","); |
3945 | if (in_port_s && in_port_s[0]) { | |
3946 | if (!ofputil_port_from_string(in_port_s, &resubmit->in_port)) { | |
3947 | return xasprintf("%s: resubmit to unknown port", in_port_s); | |
8f2cded4 | 3948 | } |
c2d936a4 BP |
3949 | } else { |
3950 | resubmit->in_port = OFPP_IN_PORT; | |
3951 | } | |
4cceacb9 | 3952 | |
c2d936a4 BP |
3953 | table_s = strsep(&arg, ","); |
3954 | if (table_s && table_s[0]) { | |
3955 | uint32_t table_id = 0; | |
3956 | char *error; | |
3957 | ||
3958 | error = str_to_u32(table_s, &table_id); | |
3959 | if (error) { | |
3960 | return error; | |
3961 | } | |
3962 | resubmit->table_id = table_id; | |
3963 | } else { | |
3964 | resubmit->table_id = 255; | |
4cceacb9 JS |
3965 | } |
3966 | ||
c2d936a4 BP |
3967 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
3968 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
3969 | "specified on resubmit"); | |
3970 | } | |
3971 | return NULL; | |
3972 | } | |
3973 | ||
3974 | static void | |
3975 | format_RESUBMIT(const struct ofpact_resubmit *a, struct ds *s) | |
3976 | { | |
3977 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
b1c5bf1f | 3978 | ds_put_format(s, "%sresubmit:%s", colors.special, colors.end); |
c2d936a4 BP |
3979 | ofputil_format_port(a->in_port, s); |
3980 | } else { | |
b1c5bf1f | 3981 | ds_put_format(s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 BP |
3982 | if (a->in_port != OFPP_IN_PORT) { |
3983 | ofputil_format_port(a->in_port, s); | |
3984 | } | |
3985 | ds_put_char(s, ','); | |
3986 | if (a->table_id != 255) { | |
3987 | ds_put_format(s, "%"PRIu8, a->table_id); | |
3988 | } | |
b1c5bf1f | 3989 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
3990 | } |
3991 | } | |
3992 | \f | |
3993 | /* Action structure for NXAST_LEARN. | |
3994 | * | |
3995 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
3996 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
3997 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
3998 | * flow's match criteria and actions are built by applying each of the series | |
3999 | * of flow_mod_spec elements included as part of the action. | |
4000 | * | |
4001 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
4002 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
4003 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
4004 | * bits from a source to a destination. In this case, the header contains | |
4005 | * multiple fields: | |
4006 | * | |
4007 | * 15 14 13 12 11 10 0 | |
4008 | * +------+---+------+---------------------------------+ | |
4009 | * | 0 |src| dst | n_bits | | |
4010 | * +------+---+------+---------------------------------+ | |
4011 | * | |
4012 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
4013 | * following table summarizes the meaning of each possible combination. | |
4014 | * Details follow the table: | |
4015 | * | |
4016 | * src dst meaning | |
4017 | * --- --- ---------------------------------------------------------- | |
4018 | * 0 0 Add match criteria based on value in a field. | |
4019 | * 1 0 Add match criteria based on an immediate value. | |
4020 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
4021 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
4022 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
4023 | * All other combinations are undefined and not allowed. | |
4024 | * | |
4025 | * The flow_mod_spec header is followed by a source specification and a | |
4026 | * destination specification. The format and meaning of the source | |
4027 | * specification depends on 'src': | |
4028 | * | |
4029 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
4030 | * which this action is attached. (This should be a wildcarded field. If | |
4031 | * its value is fully specified then the source bits being copied have | |
4032 | * constant values.) | |
4033 | * | |
4034 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
4035 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
4036 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
4037 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
4038 | * field in NXAST_REG_MOVE. | |
4039 | * | |
4040 | * - If 'src' is 1, the source bits are a constant value. The source | |
4041 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
4042 | * number in network order, the source bits are the 'n_bits' | |
4043 | * least-significant bits. The switch will report an error if other bits | |
4044 | * in the constant are nonzero. | |
4045 | * | |
4046 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
4047 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
4048 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
4049 | * meaning of the flow_mod_spec depends on 'dst': | |
4050 | * | |
4051 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
4052 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
4053 | * packet equal the source bits. 'field' may be any nxm_header with | |
4054 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
4055 | * | |
4056 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
4057 | * prerequisites for matching fields specified later, by copying constant | |
4058 | * values into prerequisite fields. | |
4059 | * | |
4060 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
4061 | * restrictions. | |
4062 | * | |
4063 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
4064 | * the new flow. The new flow copies the source bits into | |
4065 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
4066 | * flow_mod_specs. | |
4067 | * | |
4068 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
4069 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
4070 | * | |
4071 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
4072 | * empty. It has the following meaning: | |
4073 | * | |
4074 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
4075 | * The new flow outputs to the OpenFlow port specified by the source field. | |
4076 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
4077 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
4078 | * may not be used. | |
4079 | * | |
4080 | * Resource Management | |
4081 | * ------------------- | |
4082 | * | |
4083 | * A switch has a finite amount of flow table space available for learning. | |
4084 | * When this space is exhausted, no new learning table entries will be learned | |
4085 | * until some existing flow table entries expire. The controller should be | |
4086 | * prepared to handle this by flooding (which can be implemented as a | |
4087 | * low-priority flow). | |
4088 | * | |
4089 | * If a learned flow matches a single TCP stream with a relatively long | |
4090 | * timeout, one may make the best of resource constraints by setting | |
4091 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
4092 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
4093 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
4094 | * the learned flow. | |
4095 | * | |
4096 | * Examples | |
4097 | * -------- | |
4098 | * | |
4099 | * The following examples give a prose description of the flow_mod_specs along | |
4100 | * with informal notation for how those would be represented and a hex dump of | |
4101 | * the bytes that would be required. | |
4102 | * | |
4103 | * These examples could work with various nx_action_learn parameters. Typical | |
4104 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
4105 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
4106 | * | |
4107 | * 1. Learn input port based on the source MAC, with lookup into | |
4108 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
4109 | * | |
4110 | * Match on in_port=99: | |
4111 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
4112 | * ovs_be16(99), 00 63 | |
4113 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4114 | * | |
4115 | * Match Ethernet destination on Ethernet source from packet: | |
4116 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4117 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4118 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4119 | * | |
4120 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
4121 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
4122 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4123 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
4124 | * | |
4125 | * Given a packet that arrived on port A with Ethernet source address B, | |
4126 | * this would set up the flow "in_port=99, dl_dst=B, | |
4127 | * actions=load:A->NXM_NX_REG1[16..31]". | |
4128 | * | |
4129 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
4130 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4131 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
4132 | * | |
4133 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
4134 | * into NXM_NX_REG1[16:31]: | |
4135 | * | |
4136 | * Match on same VLAN ID as packet: | |
4137 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
4138 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4139 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4140 | * | |
4141 | * Match Ethernet destination on Ethernet source from packet: | |
4142 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4143 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4144 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4145 | * | |
4146 | * Output to the packet's input port: | |
4147 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
4148 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4149 | * | |
4150 | * Given a packet that arrived on port A with Ethernet source address B in | |
4151 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
4152 | * actions=output:A". | |
4153 | * | |
4154 | * In syntax accepted by ovs-ofctl, this action is: | |
4155 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4156 | * output:NXM_OF_IN_PORT[]) | |
4157 | * | |
4158 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
4159 | * 10-second MAC expiration time to make it easier to see what's going on | |
4160 | * | |
4161 | * ovs-vsctl del-controller br0 | |
4162 | * ovs-ofctl del-flows br0 | |
4163 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
4164 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
4165 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
4166 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
4167 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
4168 | * | |
4169 | * You can then dump the MAC learning table with: | |
4170 | * | |
4171 | * ovs-ofctl dump-flows br0 table=1 | |
4172 | * | |
4173 | * Usage Advice | |
4174 | * ------------ | |
4175 | * | |
4176 | * For best performance, segregate learned flows into a table that is not used | |
4177 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
4178 | * (a flow with no match criteria). If different learning actions specify | |
4179 | * different match criteria, use different tables for the learned flows. | |
4180 | * | |
4181 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
4182 | * These timeouts apply to the flow that is added, which means that a flow with | |
4183 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
4184 | * address. This is not usually the intent in MAC learning; instead, we want | |
4185 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
4186 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
4187 | * |
4188 | * | |
4189 | * Visibility of Changes | |
4190 | * --------------------- | |
4191 | * | |
4192 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
4193 | * flow translation are visible to flow table lookups made later in the flow | |
4194 | * translation. This means that, in the example above, a MAC learned by the | |
4195 | * learn action in table 0 would be found in table 1 (if the packet being | |
4196 | * processed had the same source and destination MAC address). | |
4197 | * | |
4198 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
4199 | * modify a flow) by a "learn" action are visible only for later flow | |
4200 | * translations, not for later lookups within the same flow translation. In | |
4201 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
4202 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
4203 | * after the processing of the learn action, meaning that if this MAC had not | |
4204 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
4205 | struct nx_action_learn { |
4206 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4207 | ovs_be16 len; /* At least 24. */ | |
4208 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4209 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
4210 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
4211 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
4212 | ovs_be16 priority; /* Priority level of flow entry. */ | |
4213 | ovs_be64 cookie; /* Cookie for new flow. */ | |
4214 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
4215 | uint8_t table_id; /* Table to insert flow entry. */ | |
4216 | uint8_t pad; /* Must be zero. */ | |
4217 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
4218 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
4219 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
4220 | * until the end of the action is reached. */ | |
4221 | }; | |
4222 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
4223 | ||
4224 | static ovs_be16 | |
4225 | get_be16(const void **pp) | |
4226 | { | |
4227 | const ovs_be16 *p = *pp; | |
4228 | ovs_be16 value = *p; | |
4229 | *pp = p + 1; | |
4230 | return value; | |
4231 | } | |
4232 | ||
4233 | static ovs_be32 | |
4234 | get_be32(const void **pp) | |
4235 | { | |
4236 | const ovs_be32 *p = *pp; | |
4237 | ovs_be32 value = get_unaligned_be32(p); | |
4238 | *pp = p + 1; | |
4239 | return value; | |
4240 | } | |
4241 | ||
4242 | static void | |
4243 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf) | |
4244 | { | |
4245 | sf->field = mf_from_nxm_header(ntohl(get_be32(p))); | |
4246 | sf->ofs = ntohs(get_be16(p)); | |
4247 | sf->n_bits = n_bits; | |
4248 | } | |
4249 | ||
4250 | static unsigned int | |
4251 | learn_min_len(uint16_t header) | |
4252 | { | |
4253 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
4254 | int src_type = header & NX_LEARN_SRC_MASK; | |
4255 | int dst_type = header & NX_LEARN_DST_MASK; | |
4256 | unsigned int min_len; | |
4257 | ||
4258 | min_len = 0; | |
4259 | if (src_type == NX_LEARN_SRC_FIELD) { | |
4260 | min_len += sizeof(ovs_be32); /* src_field */ | |
4261 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
4262 | } else { | |
4263 | min_len += DIV_ROUND_UP(n_bits, 16); | |
4264 | } | |
4265 | if (dst_type == NX_LEARN_DST_MATCH || | |
4266 | dst_type == NX_LEARN_DST_LOAD) { | |
4267 | min_len += sizeof(ovs_be32); /* dst_field */ | |
4268 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
4269 | } | |
4270 | return min_len; | |
4271 | } | |
4272 | ||
4273 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to | |
4274 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4275 | static enum ofperr | |
4276 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
f3cd3ac7 | 4277 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4278 | struct ofpbuf *ofpacts) |
4279 | { | |
4280 | struct ofpact_learn *learn; | |
4281 | const void *p, *end; | |
4282 | ||
4283 | if (nal->pad) { | |
4284 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4285 | } | |
4286 | ||
4287 | learn = ofpact_put_LEARN(ofpacts); | |
4288 | ||
4289 | learn->idle_timeout = ntohs(nal->idle_timeout); | |
4290 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
4291 | learn->priority = ntohs(nal->priority); | |
4292 | learn->cookie = nal->cookie; | |
4293 | learn->table_id = nal->table_id; | |
4294 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
4295 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
4296 | ||
4297 | learn->flags = ntohs(nal->flags); | |
4298 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4299 | NX_LEARN_F_DELETE_LEARNED)) { | |
4300 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4301 | } | |
4302 | ||
4303 | if (learn->table_id == 0xff) { | |
4304 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4305 | } | |
4306 | ||
4307 | end = (char *) nal + ntohs(nal->len); | |
4308 | for (p = nal + 1; p != end; ) { | |
4309 | struct ofpact_learn_spec *spec; | |
4310 | uint16_t header = ntohs(get_be16(&p)); | |
4311 | ||
4312 | if (!header) { | |
4313 | break; | |
4314 | } | |
4315 | ||
4316 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 4317 | learn = ofpacts->header; |
c2d936a4 BP |
4318 | |
4319 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
4320 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
4321 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
4322 | ||
4323 | /* Check for valid src and dst type combination. */ | |
4324 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4325 | spec->dst_type == NX_LEARN_DST_LOAD || | |
4326 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
4327 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
4328 | /* OK. */ | |
4329 | } else { | |
4330 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4331 | } | |
4332 | ||
4333 | /* Check that the arguments don't overrun the end of the action. */ | |
4334 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
4335 | return OFPERR_OFPBAC_BAD_LEN; | |
4336 | } | |
4337 | ||
4338 | /* Get the source. */ | |
dfe191d5 JR |
4339 | const uint8_t *imm = NULL; |
4340 | unsigned int imm_bytes = 0; | |
c2d936a4 BP |
4341 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
4342 | get_subfield(spec->n_bits, &p, &spec->src); | |
4343 | } else { | |
4344 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 4345 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
4346 | |
4347 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
4348 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
4349 | } |
4350 | ||
4351 | /* Get the destination. */ | |
4352 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4353 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
4354 | get_subfield(spec->n_bits, &p, &spec->dst); | |
4355 | } | |
dfe191d5 JR |
4356 | |
4357 | if (imm) { | |
4358 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
4359 | OFPACT_ALIGN(imm_bytes)); | |
4360 | memcpy(src_imm, imm, imm_bytes); | |
4361 | ||
4362 | learn = ofpacts->header; | |
4363 | } | |
c2d936a4 | 4364 | } |
ce058104 | 4365 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
4366 | |
4367 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
4368 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4369 | } | |
4370 | ||
4371 | return 0; | |
4372 | } | |
4373 | ||
4374 | static void | |
4375 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
4376 | { | |
4377 | ofpbuf_put(b, &x, sizeof x); | |
4378 | } | |
4379 | ||
4380 | static void | |
4381 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
4382 | { | |
4383 | ofpbuf_put(b, &x, sizeof x); | |
4384 | } | |
4385 | ||
4386 | static void | |
4387 | put_u16(struct ofpbuf *b, uint16_t x) | |
4388 | { | |
4389 | put_be16(b, htons(x)); | |
4390 | } | |
4391 | ||
4392 | static void | |
4393 | put_u32(struct ofpbuf *b, uint32_t x) | |
4394 | { | |
4395 | put_be32(b, htonl(x)); | |
4396 | } | |
4397 | ||
4398 | static void | |
4399 | encode_LEARN(const struct ofpact_learn *learn, | |
4400 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4401 | { | |
4402 | const struct ofpact_learn_spec *spec; | |
4403 | struct nx_action_learn *nal; | |
4404 | size_t start_ofs; | |
4405 | ||
6fd6ed71 | 4406 | start_ofs = out->size; |
c2d936a4 BP |
4407 | nal = put_NXAST_LEARN(out); |
4408 | nal->idle_timeout = htons(learn->idle_timeout); | |
4409 | nal->hard_timeout = htons(learn->hard_timeout); | |
4410 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
4411 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
4412 | nal->priority = htons(learn->priority); | |
4413 | nal->cookie = learn->cookie; | |
4414 | nal->flags = htons(learn->flags); | |
4415 | nal->table_id = learn->table_id; | |
4416 | ||
c65a31e2 | 4417 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
4418 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
4419 | ||
4420 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
508a9338 | 4421 | put_u32(out, mf_nxm_header(spec->src.field->id)); |
c2d936a4 BP |
4422 | put_u16(out, spec->src.ofs); |
4423 | } else { | |
4424 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
4425 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 4426 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 4427 | |
507a9a16 JR |
4428 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
4429 | n_bytes); | |
c2d936a4 BP |
4430 | } |
4431 | ||
4432 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4433 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
508a9338 | 4434 | put_u32(out, mf_nxm_header(spec->dst.field->id)); |
c2d936a4 BP |
4435 | put_u16(out, spec->dst.ofs); |
4436 | } | |
4437 | } | |
4438 | ||
178742f9 | 4439 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
4440 | } |
4441 | ||
cab50449 | 4442 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4443 | parse_LEARN(char *arg, struct ofpbuf *ofpacts, |
4444 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4445 | { | |
4446 | return learn_parse(arg, ofpacts); | |
4447 | } | |
4448 | ||
4449 | static void | |
4450 | format_LEARN(const struct ofpact_learn *a, struct ds *s) | |
4451 | { | |
4452 | learn_format(a, s); | |
4453 | } | |
4454 | \f | |
18080541 BP |
4455 | /* Action structure for NXAST_CONJUNCTION. */ |
4456 | struct nx_action_conjunction { | |
4457 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4458 | ovs_be16 len; /* At least 16. */ | |
4459 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4460 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
4461 | uint8_t clause; | |
4462 | uint8_t n_clauses; | |
4463 | ovs_be32 id; | |
4464 | }; | |
4465 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
4466 | ||
4467 | static void | |
4468 | add_conjunction(struct ofpbuf *out, | |
4469 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
4470 | { | |
4471 | struct ofpact_conjunction *oc; | |
4472 | ||
4473 | oc = ofpact_put_CONJUNCTION(out); | |
4474 | oc->id = id; | |
4475 | oc->clause = clause; | |
4476 | oc->n_clauses = n_clauses; | |
4477 | } | |
4478 | ||
4479 | static enum ofperr | |
4480 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 4481 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
4482 | struct ofpbuf *out) |
4483 | { | |
4484 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
4485 | || nac->clause >= nac->n_clauses) { | |
4486 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
4487 | } else { | |
4488 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
4489 | return 0; | |
4490 | } | |
4491 | } | |
4492 | ||
4493 | static void | |
4494 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
4495 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4496 | { | |
4497 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
4498 | nac->clause = oc->clause; | |
4499 | nac->n_clauses = oc->n_clauses; | |
4500 | nac->id = htonl(oc->id); | |
4501 | } | |
4502 | ||
4503 | static void | |
4504 | format_CONJUNCTION(const struct ofpact_conjunction *oc, struct ds *s) | |
4505 | { | |
b1c5bf1f QM |
4506 | ds_put_format(s, "%sconjunction(%s%"PRIu32",%"PRIu8"/%"PRIu8"%s)%s", |
4507 | colors.paren, colors.end, | |
4508 | oc->id, oc->clause + 1, oc->n_clauses, | |
4509 | colors.paren, colors.end); | |
18080541 BP |
4510 | } |
4511 | ||
4512 | static char * OVS_WARN_UNUSED_RESULT | |
4513 | parse_CONJUNCTION(const char *arg, struct ofpbuf *ofpacts, | |
4514 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4515 | { | |
4516 | uint8_t n_clauses; | |
4517 | uint8_t clause; | |
4518 | uint32_t id; | |
4519 | int n; | |
4520 | ||
4521 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
4522 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
4523 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
4524 | } | |
4525 | ||
4526 | if (n_clauses < 2) { | |
4527 | return xstrdup("conjunction must have at least 2 clauses"); | |
4528 | } else if (n_clauses > 64) { | |
4529 | return xstrdup("conjunction must have at most 64 clauses"); | |
4530 | } else if (clause < 1) { | |
4531 | return xstrdup("clause index must be positive"); | |
4532 | } else if (clause > n_clauses) { | |
4533 | return xstrdup("clause index must be less than or equal to " | |
4534 | "number of clauses"); | |
4535 | } | |
4536 | ||
4537 | add_conjunction(ofpacts, id, clause - 1, n_clauses); | |
4538 | return NULL; | |
4539 | } | |
4540 | \f | |
c2d936a4 BP |
4541 | /* Action structure for NXAST_MULTIPATH. |
4542 | * | |
4543 | * This action performs the following steps in sequence: | |
4544 | * | |
4545 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
4546 | * Refer to the definition of "enum nx_mp_fields" for details. | |
4547 | * | |
4548 | * The 'basis' value is used as a universal hash parameter, that is, | |
4549 | * different values of 'basis' yield different hash functions. The | |
4550 | * particular universal hash function used is implementation-defined. | |
4551 | * | |
4552 | * The hashed fields' values are drawn from the current state of the | |
4553 | * flow, including all modifications that have been made by actions up to | |
4554 | * this point. | |
4555 | * | |
4556 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
4557 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
4558 | * for details. | |
4559 | * | |
4560 | * The output of the algorithm is 'link', an unsigned integer less than | |
4561 | * or equal to 'max_link'. | |
4562 | * | |
4563 | * Some algorithms use 'arg' as an additional argument. | |
4564 | * | |
4565 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
4566 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
4567 | * action. | |
4568 | * | |
4569 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
4570 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
4571 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
4572 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
4573 | */ | |
4574 | struct nx_action_multipath { | |
4575 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4576 | ovs_be16 len; /* Length is 32. */ | |
4577 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4578 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
4579 | ||
4580 | /* What fields to hash and how. */ | |
4581 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
4582 | ovs_be16 basis; /* Universal hash parameter. */ | |
4583 | ovs_be16 pad0; | |
4584 | ||
4585 | /* Multipath link choice algorithm to apply to hash value. */ | |
4586 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
4587 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
4588 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
4589 | ovs_be16 pad1; | |
4590 | ||
4591 | /* Where to store the result. */ | |
4592 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
4593 | ovs_be32 dst; /* Destination. */ | |
4594 | }; | |
4595 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
4596 | ||
4597 | static enum ofperr | |
4598 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 4599 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4600 | struct ofpbuf *out) |
4601 | { | |
4602 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
4603 | size_t min_n_bits = log_2_ceil(n_links); | |
4604 | struct ofpact_multipath *mp; | |
4605 | ||
4606 | mp = ofpact_put_MULTIPATH(out); | |
4607 | mp->fields = ntohs(nam->fields); | |
4608 | mp->basis = ntohs(nam->basis); | |
4609 | mp->algorithm = ntohs(nam->algorithm); | |
4610 | mp->max_link = ntohs(nam->max_link); | |
4611 | mp->arg = ntohl(nam->arg); | |
4612 | mp->dst.field = mf_from_nxm_header(ntohl(nam->dst)); | |
4613 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); | |
4614 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
4615 | ||
4616 | if (!flow_hash_fields_valid(mp->fields)) { | |
4617 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
4618 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4619 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
4620 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
4621 | && mp->algorithm != NX_MP_ALG_HRW | |
4622 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
4623 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
4624 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4625 | } else if (mp->dst.n_bits < min_n_bits) { | |
4626 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
4627 | "%"PRIu32" links", min_n_bits, n_links); | |
4628 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4629 | } | |
4630 | ||
4631 | return multipath_check(mp, NULL); | |
4632 | } | |
4633 | ||
4634 | static void | |
4635 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
4636 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4637 | { | |
4638 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
4639 | ||
4640 | nam->fields = htons(mp->fields); | |
4641 | nam->basis = htons(mp->basis); | |
4642 | nam->algorithm = htons(mp->algorithm); | |
4643 | nam->max_link = htons(mp->max_link); | |
4644 | nam->arg = htonl(mp->arg); | |
4645 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
508a9338 | 4646 | nam->dst = htonl(mf_nxm_header(mp->dst.field->id)); |
c2d936a4 BP |
4647 | } |
4648 | ||
cab50449 | 4649 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4650 | parse_MULTIPATH(const char *arg, struct ofpbuf *ofpacts, |
4651 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4652 | { | |
4653 | return multipath_parse(ofpact_put_MULTIPATH(ofpacts), arg); | |
4654 | } | |
4655 | ||
4656 | static void | |
4657 | format_MULTIPATH(const struct ofpact_multipath *a, struct ds *s) | |
4658 | { | |
4659 | multipath_format(a, s); | |
4660 | } | |
4661 | \f | |
4662 | /* Action structure for NXAST_NOTE. | |
4663 | * | |
4664 | * This action has no effect. It is variable length. The switch does not | |
4665 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
4666 | * can use this action to attach arbitrary metadata to a flow. | |
4667 | * | |
4668 | * This action might go away in the future. | |
4669 | */ | |
4670 | struct nx_action_note { | |
4671 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4672 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
4673 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4674 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
4675 | uint8_t note[6]; /* Start of user-defined data. */ | |
4676 | /* Possibly followed by additional user-defined data. */ | |
4677 | }; | |
4678 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
4679 | ||
4680 | static enum ofperr | |
f3cd3ac7 JS |
4681 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
4682 | enum ofp_version ofp_version OVS_UNUSED, | |
4683 | struct ofpbuf *out) | |
c2d936a4 BP |
4684 | { |
4685 | struct ofpact_note *note; | |
4686 | unsigned int length; | |
4687 | ||
4688 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 4689 | note = ofpact_put_NOTE(out); |
c2d936a4 | 4690 | note->length = length; |
2bd318de | 4691 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 4692 | note = out->header; |
ce058104 | 4693 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
4694 | |
4695 | return 0; | |
4696 | } | |
4697 | ||
4698 | static void | |
4699 | encode_NOTE(const struct ofpact_note *note, | |
4700 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4701 | { | |
6fd6ed71 | 4702 | size_t start_ofs = out->size; |
c2d936a4 | 4703 | struct nx_action_note *nan; |
c2d936a4 BP |
4704 | |
4705 | put_NXAST_NOTE(out); | |
6fd6ed71 | 4706 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
4707 | |
4708 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 4709 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
4710 | } |
4711 | ||
cab50449 | 4712 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4713 | parse_NOTE(const char *arg, struct ofpbuf *ofpacts, |
4714 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4715 | { | |
27aa8793 BP |
4716 | size_t start_ofs = ofpacts->size; |
4717 | ofpact_put_NOTE(ofpacts); | |
4718 | arg = ofpbuf_put_hex(ofpacts, arg, NULL); | |
4719 | if (arg[0]) { | |
4720 | return xstrdup("bad hex digit in `note' argument"); | |
4721 | } | |
4722 | struct ofpact_note *note = ofpbuf_at_assert(ofpacts, start_ofs, | |
4723 | sizeof *note); | |
4724 | note->length = ofpacts->size - (start_ofs + sizeof *note); | |
ce058104 | 4725 | ofpact_finish_NOTE(ofpacts, ¬e); |
c2d936a4 BP |
4726 | return NULL; |
4727 | } | |
4728 | ||
4729 | static void | |
4730 | format_NOTE(const struct ofpact_note *a, struct ds *s) | |
4731 | { | |
b1c5bf1f | 4732 | ds_put_format(s, "%snote:%s", colors.param, colors.end); |
bdcad671 | 4733 | format_hex_arg(s, a->data, a->length); |
c2d936a4 BP |
4734 | } |
4735 | \f | |
4736 | /* Exit action. */ | |
4737 | ||
4738 | static enum ofperr | |
4739 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
4740 | { | |
4741 | ofpact_put_EXIT(out); | |
4742 | return 0; | |
4743 | } | |
4744 | ||
4745 | static void | |
4746 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
4747 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4748 | { | |
4749 | put_NXAST_EXIT(out); | |
4750 | } | |
4751 | ||
cab50449 | 4752 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4753 | parse_EXIT(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
4754 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4755 | { | |
4756 | ofpact_put_EXIT(ofpacts); | |
4757 | return NULL; | |
4758 | } | |
4759 | ||
4760 | static void | |
4761 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
4762 | { | |
b1c5bf1f | 4763 | ds_put_format(s, "%sexit%s", colors.special, colors.end); |
c2d936a4 BP |
4764 | } |
4765 | \f | |
e672ff9b JR |
4766 | /* Unroll xlate action. */ |
4767 | ||
4768 | static void | |
4769 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
4770 | enum ofp_version ofp_version OVS_UNUSED, | |
4771 | struct ofpbuf *out OVS_UNUSED) | |
4772 | { | |
4773 | OVS_NOT_REACHED(); | |
4774 | } | |
4775 | ||
4776 | static char * OVS_WARN_UNUSED_RESULT | |
4777 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, struct ofpbuf *ofpacts OVS_UNUSED, | |
4778 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4779 | { | |
4780 | OVS_NOT_REACHED(); | |
4781 | return NULL; | |
4782 | } | |
4783 | ||
4784 | static void | |
28632a8a | 4785 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, struct ds *s) |
e672ff9b | 4786 | { |
b1c5bf1f QM |
4787 | ds_put_format(s, "%sunroll_xlate(%s%stable=%s%"PRIu8 |
4788 | ", %scookie=%s%"PRIu64"%s)%s", | |
4789 | colors.paren, colors.end, | |
4790 | colors.special, colors.end, a->rule_table_id, | |
4791 | colors.param, colors.end, ntohll(a->rule_cookie), | |
4792 | colors.paren, colors.end); | |
e672ff9b JR |
4793 | } |
4794 | \f | |
7ae62a67 WT |
4795 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
4796 | * more embedded OpenFlow actions. */ | |
4797 | ||
4798 | static enum ofperr | |
4799 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
4800 | enum ofp_version ofp_version, | |
4801 | struct ofpbuf *out) | |
4802 | { | |
4803 | int error; | |
4804 | struct ofpbuf openflow; | |
4805 | const size_t clone_offset = ofpacts_pull(out); | |
4806 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
4807 | ||
4808 | /* decode action list */ | |
4809 | ofpbuf_pull(out, sizeof(*clone)); | |
4810 | openflow = ofpbuf_const_initializer( | |
4811 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
4812 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
4813 | ofp_version, | |
4814 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
4815 | out, 0); | |
4816 | clone = ofpbuf_push_uninit(out, sizeof *clone); | |
4817 | out->header = &clone->ofpact; | |
4818 | ofpact_finish_CLONE(out, &clone); | |
4819 | ofpbuf_push_uninit(out, clone_offset); | |
4820 | return error; | |
4821 | } | |
4822 | ||
4823 | static void | |
4824 | encode_CLONE(const struct ofpact_nest *clone, | |
4825 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4826 | { | |
4827 | size_t len; | |
4828 | const size_t ofs = out->size; | |
4829 | struct ext_action_header *eah; | |
4830 | ||
4831 | eah = put_NXAST_CLONE(out); | |
4832 | len = ofpacts_put_openflow_actions(clone->actions, | |
4833 | ofpact_nest_get_action_len(clone), | |
4834 | out, ofp_version); | |
4835 | len += sizeof *eah; | |
4836 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
4837 | eah->len = htons(len); | |
4838 | } | |
4839 | ||
4840 | static char * OVS_WARN_UNUSED_RESULT | |
4841 | parse_CLONE(char *arg, struct ofpbuf *ofpacts, | |
4842 | enum ofputil_protocol *usable_protocols) | |
4843 | { | |
4844 | const size_t clone_offset = ofpacts_pull(ofpacts); | |
4845 | struct ofpact_nest *clone = ofpact_put_CLONE(ofpacts); | |
4846 | char *error; | |
4847 | ||
4848 | ofpbuf_pull(ofpacts, sizeof *clone); | |
4849 | error = ofpacts_parse_copy(arg, ofpacts, usable_protocols, false, 0); | |
4850 | /* header points to the action list */ | |
4851 | ofpacts->header = ofpbuf_push_uninit(ofpacts, sizeof *clone); | |
4852 | clone = ofpacts->header; | |
4853 | ||
4854 | ofpact_finish_CLONE(ofpacts, &clone); | |
4855 | ofpbuf_push_uninit(ofpacts, clone_offset); | |
4856 | return error; | |
4857 | } | |
4858 | ||
4859 | static void | |
4860 | format_CLONE(const struct ofpact_nest *a, struct ds *s) | |
4861 | { | |
4862 | ds_put_format(s, "%sclone(%s", colors.paren, colors.end); | |
4863 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), s); | |
4864 | ds_put_format(s, "%s)%s", colors.paren, colors.end); | |
4865 | } | |
4866 | \f | |
c2d936a4 BP |
4867 | /* Action structure for NXAST_SAMPLE. |
4868 | * | |
4869 | * Samples matching packets with the given probability and sends them | |
4870 | * each to the set of collectors identified with the given ID. The | |
4871 | * probability is expressed as a number of packets to be sampled out | |
4872 | * of USHRT_MAX packets, and must be >0. | |
4873 | * | |
4874 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
4875 | * record sent for each sampled packet is associated with the given | |
4876 | * observation domain ID and observation point ID. Each IPFIX flow | |
4877 | * record contain the sampled packet's headers when executing this | |
4878 | * rule. If a sampled packet's headers are modified by previous | |
4879 | * actions in the flow, those modified headers are sent. */ | |
4880 | struct nx_action_sample { | |
4881 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4882 | ovs_be16 len; /* Length is 24. */ | |
4883 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4884 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
4885 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
4886 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
4887 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
4888 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
4889 | }; | |
4890 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
4891 | ||
4930ea56 | 4892 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 4893 | * |
4930ea56 BP |
4894 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
4895 | * it adds support for exporting egress tunnel information. | |
4896 | * | |
4897 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
4898 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
4899 | struct nx_action_sample2 { |
4900 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4901 | ovs_be16 len; /* Length is 32. */ | |
4902 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4903 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
4904 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
4905 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
4906 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
4907 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
4908 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
4909 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
4910 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
4911 | }; |
4912 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
4913 | ||
c2d936a4 | 4914 | static enum ofperr |
f3cd3ac7 JS |
4915 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
4916 | enum ofp_version ofp_version OVS_UNUSED, | |
4917 | struct ofpbuf *out) | |
c2d936a4 BP |
4918 | { |
4919 | struct ofpact_sample *sample; | |
4920 | ||
4921 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
4922 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
4923 | sample->probability = ntohs(nas->probability); | |
4924 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
4925 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
4926 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 4927 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 4928 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
4929 | |
4930 | if (sample->probability == 0) { | |
4931 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4932 | } | |
4933 | ||
4934 | return 0; | |
4935 | } | |
4936 | ||
4937 | static enum ofperr | |
4930ea56 BP |
4938 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
4939 | enum ofp_raw_action_type raw, | |
4940 | enum nx_action_sample_direction direction, | |
4941 | struct ofpact_sample *sample) | |
f69f713b | 4942 | { |
4930ea56 | 4943 | sample->ofpact.raw = raw; |
c2d936a4 BP |
4944 | sample->probability = ntohs(nas->probability); |
4945 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
4946 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
4947 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 4948 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 4949 | sample->direction = direction; |
c2d936a4 BP |
4950 | |
4951 | if (sample->probability == 0) { | |
4952 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4953 | } | |
4954 | ||
4955 | return 0; | |
4956 | } | |
4957 | ||
4930ea56 BP |
4958 | static enum ofperr |
4959 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
4960 | enum ofp_version ofp_version OVS_UNUSED, | |
4961 | struct ofpbuf *out) | |
4962 | { | |
4963 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
4964 | ofpact_put_SAMPLE(out)); | |
4965 | } | |
4966 | ||
4967 | static enum ofperr | |
4968 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
4969 | enum ofp_version ofp_version OVS_UNUSED, | |
4970 | struct ofpbuf *out) | |
4971 | { | |
4972 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
4973 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
4974 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4975 | } | |
4976 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
4977 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
4978 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
4979 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
4980 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4981 | } | |
4982 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
4983 | } | |
4984 | ||
4985 | static void | |
4986 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
4987 | struct nx_action_sample2 *nas) | |
4988 | { | |
4989 | nas->probability = htons(sample->probability); | |
4990 | nas->collector_set_id = htonl(sample->collector_set_id); | |
4991 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
4992 | nas->obs_point_id = htonl(sample->obs_point_id); | |
4993 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
4994 | nas->direction = sample->direction; | |
4995 | } | |
4996 | ||
c2d936a4 BP |
4997 | static void |
4998 | encode_SAMPLE(const struct ofpact_sample *sample, | |
4999 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5000 | { | |
4930ea56 BP |
5001 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
5002 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
5003 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
5004 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
5005 | || sample->sampling_port != OFPP_NONE) { | |
5006 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
5007 | } else { |
5008 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
5009 | nas->probability = htons(sample->probability); | |
5010 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5011 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5012 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5013 | } | |
c2d936a4 BP |
5014 | } |
5015 | ||
5016 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
5017 | * action to 'ofpacts'. | |
5018 | * | |
5019 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5020 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 5021 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5022 | parse_SAMPLE(char *arg, struct ofpbuf *ofpacts, |
5023 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5024 | { | |
5025 | struct ofpact_sample *os = ofpact_put_SAMPLE(ofpacts); | |
f69f713b | 5026 | os->sampling_port = OFPP_NONE; |
4930ea56 | 5027 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 5028 | |
f69f713b | 5029 | char *key, *value; |
c2d936a4 BP |
5030 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
5031 | char *error = NULL; | |
5032 | ||
5033 | if (!strcmp(key, "probability")) { | |
5034 | error = str_to_u16(value, "probability", &os->probability); | |
5035 | if (!error && os->probability == 0) { | |
5036 | error = xasprintf("invalid probability value \"%s\"", value); | |
5037 | } | |
5038 | } else if (!strcmp(key, "collector_set_id")) { | |
5039 | error = str_to_u32(value, &os->collector_set_id); | |
5040 | } else if (!strcmp(key, "obs_domain_id")) { | |
5041 | error = str_to_u32(value, &os->obs_domain_id); | |
5042 | } else if (!strcmp(key, "obs_point_id")) { | |
5043 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b BY |
5044 | } else if (!strcmp(key, "sampling_port")) { |
5045 | if (!ofputil_port_from_string(value, &os->sampling_port)) { | |
5046 | error = xasprintf("%s: unknown port", value); | |
5047 | } | |
4930ea56 BP |
5048 | } else if (!strcmp(key, "ingress")) { |
5049 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
5050 | } else if (!strcmp(key, "egress")) { | |
5051 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
5052 | } else { |
5053 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
5054 | key); | |
5055 | } | |
5056 | if (error) { | |
5057 | return error; | |
5058 | } | |
5059 | } | |
5060 | if (os->probability == 0) { | |
5061 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
5062 | } | |
f69f713b | 5063 | |
c2d936a4 BP |
5064 | return NULL; |
5065 | } | |
5066 | ||
5067 | static void | |
5068 | format_SAMPLE(const struct ofpact_sample *a, struct ds *s) | |
5069 | { | |
b1c5bf1f QM |
5070 | ds_put_format(s, "%ssample(%s%sprobability=%s%"PRIu16 |
5071 | ",%scollector_set_id=%s%"PRIu32 | |
5072 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 5073 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
5074 | colors.paren, colors.end, |
5075 | colors.param, colors.end, a->probability, | |
5076 | colors.param, colors.end, a->collector_set_id, | |
5077 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
5078 | colors.param, colors.end, a->obs_point_id); |
5079 | if (a->sampling_port != OFPP_NONE) { | |
94783c7c | 5080 | ds_put_format(s, ",%ssampling_port=%s%"PRIu32, |
f69f713b BY |
5081 | colors.param, colors.end, a->sampling_port); |
5082 | } | |
4930ea56 BP |
5083 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
5084 | ds_put_format(s, ",%singress%s", colors.param, colors.end); | |
5085 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { | |
5086 | ds_put_format(s, ",%segress%s", colors.param, colors.end); | |
5087 | } | |
f69f713b | 5088 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
5089 | } |
5090 | \f | |
d4abaff5 BP |
5091 | /* debug_recirc instruction. */ |
5092 | ||
5093 | static bool enable_debug; | |
5094 | ||
5095 | void | |
5096 | ofpact_dummy_enable(void) | |
5097 | { | |
5098 | enable_debug = true; | |
5099 | } | |
5100 | ||
5101 | static enum ofperr | |
5102 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
5103 | { | |
5104 | if (!enable_debug) { | |
5105 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5106 | } | |
5107 | ||
5108 | ofpact_put_DEBUG_RECIRC(out); | |
5109 | return 0; | |
5110 | } | |
5111 | ||
5112 | static void | |
5113 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
5114 | enum ofp_version ofp_version OVS_UNUSED, | |
5115 | struct ofpbuf *out) | |
5116 | { | |
5117 | put_NXAST_DEBUG_RECIRC(out); | |
5118 | } | |
5119 | ||
5120 | static char * OVS_WARN_UNUSED_RESULT | |
5121 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, | |
5122 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5123 | { | |
5124 | ofpact_put_DEBUG_RECIRC(ofpacts); | |
5125 | return NULL; | |
5126 | } | |
5127 | ||
5128 | static void | |
5129 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
5130 | { | |
b1c5bf1f | 5131 | ds_put_format(s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 5132 | } |
07659514 JS |
5133 | |
5134 | /* Action structure for NXAST_CT. | |
5135 | * | |
5136 | * Pass traffic to the connection tracker. | |
5137 | * | |
5138 | * There are two important concepts to understanding the connection tracking | |
5139 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
5140 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
5141 | * | |
5142 | * - Packet State: | |
5143 | * | |
5144 | * Untracked packets have not yet passed through the connection tracker, | |
5145 | * and the connection state for such packets is unknown. In most cases, | |
5146 | * packets entering the OpenFlow pipeline will initially be in the | |
5147 | * untracked state. Untracked packets may become tracked by executing | |
5148 | * NXAST_CT with a "recirc_table" specified. This makes various aspects | |
5149 | * about the connection available, in particular the connection state. | |
5150 | * | |
5151 | * Tracked packets have previously passed through the connection tracker. | |
5152 | * These packets will remain tracked through until the end of the OpenFlow | |
5153 | * pipeline. Tracked packets which have NXAST_CT executed with a | |
5154 | * "recirc_table" specified will return to the tracked state. | |
5155 | * | |
5156 | * The packet state is only significant for the duration of packet | |
5157 | * processing within the OpenFlow pipeline. | |
5158 | * | |
5159 | * - Connection State: | |
5160 | * | |
5161 | * Multiple packets may be associated with a single connection. Initially, | |
5162 | * all connections are uncommitted. The connection state corresponding to | |
5163 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
5164 | * | |
5165 | * Uncommitted connections have no state stored about them. Uncommitted | |
5166 | * connections may transition into the committed state by executing | |
5167 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
5168 | * | |
5169 | * Once a connection becomes committed, information may be gathered about | |
5170 | * the connection by passing subsequent packets through the connection | |
5171 | * tracker, and the state of the connection will be stored beyond the | |
5172 | * lifetime of packet processing. | |
5173 | * | |
5174 | * Connections may transition back into the uncommitted state due to | |
5175 | * external timers, or due to the contents of packets that are sent to the | |
5176 | * connection tracker. This behaviour is outside of the scope of the | |
5177 | * OpenFlow interface. | |
5178 | * | |
5179 | * The "zone" specifies a context within which the tracking is done: | |
5180 | * | |
5181 | * The connection tracking zone is a 16-bit number. Each zone is an | |
5182 | * independent connection tracking context. The connection state for each | |
5183 | * connection is completely separate for each zone, so if a connection | |
5184 | * is committed to zone A, then it will remain uncommitted in zone B. | |
5185 | * If NXAST_CT is executed with the same zone multiple times, later | |
5186 | * executions have no effect. | |
5187 | * | |
5188 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
5189 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
5190 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
5191 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
5192 | * are the same as the acceptable nxm_header values for the 'src' field of | |
5193 | * NXAST_REG_MOVE. | |
5194 | * | |
5195 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
5196 | * connection tracking zone. | |
5197 | * | |
5198 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
5199 | * | |
5200 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
5201 | * packet will be logically cloned prior to executing this action. One | |
5202 | * copy will be sent to the connection tracker, then will be re-injected | |
5203 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
5204 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
5205 | * fields will be populated. The original instance of the packet will | |
5206 | * continue the current actions list. This can be thought of as similar to | |
5207 | * the effect of the "output" action: One copy is sent out (in this case, | |
5208 | * to the connection tracker), but the current copy continues processing. | |
5209 | * | |
5210 | * It is strongly recommended that this table is later than the current | |
5211 | * table, to prevent loops. | |
8e53fe8c | 5212 | * |
d787ad39 JS |
5213 | * The "alg" attaches protocol-specific behaviour to this action: |
5214 | * | |
5215 | * The ALG is a 16-bit number which specifies that additional | |
5216 | * processing should be applied to this traffic. | |
5217 | * | |
5218 | * Protocol | Value | Meaning | |
5219 | * -------------------------------------------------------------------- | |
5220 | * None | 0 | No protocol-specific behaviour. | |
5221 | * FTP | 21 | Parse FTP control connections and observe the | |
5222 | * | | negotiation of related data connections. | |
5223 | * Other | Other | Unsupported protocols. | |
5224 | * | |
5225 | * By way of example, if FTP control connections have this action applied | |
5226 | * with the ALG set to FTP (21), then the connection tracker will observe | |
5227 | * the negotiation of data connections. This allows the connection | |
5228 | * tracker to identify subsequent data connections as "related" to this | |
5229 | * existing connection. The "related" flag will be populated in the | |
5230 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
5231 | * specified. | |
5232 | * | |
8e53fe8c JS |
5233 | * Zero or more actions may immediately follow this action. These actions will |
5234 | * be executed within the context of the connection tracker, and they require | |
5235 | * the NX_CT_F_COMMIT flag to be set. | |
07659514 JS |
5236 | */ |
5237 | struct nx_action_conntrack { | |
5238 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5239 | ovs_be16 len; /* At least 24. */ | |
5240 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5241 | ovs_be16 subtype; /* NXAST_CT. */ | |
5242 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
5243 | * Unspecified flag bits must be zero. */ | |
5244 | ovs_be32 zone_src; /* Connection tracking context. */ | |
5245 | union { | |
5246 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
5247 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
5248 | }; | |
5249 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
5250 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
5251 | uint8_t pad[3]; /* Zeroes */ |
5252 | ovs_be16 alg; /* Well-known port number for the protocol. | |
5253 | * 0 indicates no ALG is required. */ | |
07659514 JS |
5254 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
5255 | * these is included in 'len'. */ | |
5256 | }; | |
5257 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
5258 | ||
5259 | static enum ofperr | |
5260 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
5261 | struct ofpact_conntrack *out) | |
5262 | { | |
5263 | if (nac->zone_src) { | |
5264 | enum ofperr error; | |
5265 | ||
5266 | out->zone_src.field = mf_from_nxm_header(ntohl(nac->zone_src)); | |
5267 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); | |
5268 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5269 | error = mf_check_src(&out->zone_src, NULL); | |
5270 | if (error) { | |
5271 | return error; | |
5272 | } | |
5273 | ||
5274 | if (out->zone_src.n_bits != 16) { | |
5275 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
5276 | out->zone_src.n_bits); | |
5277 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
5278 | } | |
5279 | } else { | |
5280 | out->zone_src.field = NULL; | |
5281 | out->zone_imm = ntohs(nac->zone_imm); | |
5282 | } | |
5283 | ||
5284 | return 0; | |
5285 | } | |
5286 | ||
5287 | static enum ofperr | |
5288 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
8e53fe8c | 5289 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 | 5290 | { |
8e53fe8c | 5291 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 5292 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
07659514 | 5293 | conntrack->flags = ntohs(nac->flags); |
0a2869d5 BP |
5294 | |
5295 | int error = decode_ct_zone(nac, conntrack); | |
07659514 JS |
5296 | if (error) { |
5297 | goto out; | |
5298 | } | |
5299 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 5300 | conntrack->alg = ntohs(nac->alg); |
07659514 | 5301 | |
8e53fe8c JS |
5302 | ofpbuf_pull(out, sizeof(*conntrack)); |
5303 | ||
0a2869d5 BP |
5304 | struct ofpbuf openflow = ofpbuf_const_initializer( |
5305 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
5306 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
5307 | ofp_version, | |
5308 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5309 | out, OFPACT_CT); | |
5310 | if (error) { | |
5311 | goto out; | |
5312 | } | |
5313 | ||
5314 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
5315 | out->header = &conntrack->ofpact; | |
ce058104 | 5316 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
5317 | |
5318 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
5319 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
5320 | const struct ofpact *a; |
5321 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
5322 | ||
5323 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
5324 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
5325 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
5326 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
5327 | "other than NAT without arguments are specified."); | |
5328 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
5329 | goto out; | |
5330 | } | |
5331 | } | |
8e53fe8c JS |
5332 | } |
5333 | ||
07659514 | 5334 | out: |
8e53fe8c | 5335 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
5336 | return error; |
5337 | } | |
5338 | ||
5339 | static void | |
5340 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 5341 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
5342 | { |
5343 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
5344 | const size_t ofs = out->size; |
5345 | size_t len; | |
07659514 JS |
5346 | |
5347 | nac = put_NXAST_CT(out); | |
5348 | nac->flags = htons(conntrack->flags); | |
5349 | if (conntrack->zone_src.field) { | |
5350 | nac->zone_src = htonl(mf_nxm_header(conntrack->zone_src.field->id)); | |
5351 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, | |
5352 | conntrack->zone_src.n_bits); | |
5353 | } else { | |
5354 | nac->zone_src = htonl(0); | |
5355 | nac->zone_imm = htons(conntrack->zone_imm); | |
5356 | } | |
5357 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 5358 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
5359 | |
5360 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
5361 | ofpact_ct_get_action_len(conntrack), | |
5362 | out, ofp_version); | |
5363 | len += sizeof(*nac); | |
5364 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
5365 | nac->len = htons(len); | |
07659514 JS |
5366 | } |
5367 | ||
9ac0aada JR |
5368 | static char * OVS_WARN_UNUSED_RESULT parse_NAT(char *arg, struct ofpbuf *, |
5369 | enum ofputil_protocol * OVS_UNUSED); | |
5370 | ||
07659514 JS |
5371 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
5372 | * action to 'ofpacts'. | |
5373 | * | |
5374 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5375 | * error. The caller is responsible for freeing the returned string. */ | |
5376 | static char * OVS_WARN_UNUSED_RESULT | |
5377 | parse_CT(char *arg, struct ofpbuf *ofpacts, | |
8e53fe8c | 5378 | enum ofputil_protocol *usable_protocols) |
07659514 | 5379 | { |
8e53fe8c | 5380 | const size_t ct_offset = ofpacts_pull(ofpacts); |
07659514 JS |
5381 | struct ofpact_conntrack *oc; |
5382 | char *error = NULL; | |
5383 | char *key, *value; | |
5384 | ||
5385 | oc = ofpact_put_CT(ofpacts); | |
5386 | oc->flags = 0; | |
5387 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
5388 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
5389 | if (!strcmp(key, "commit")) { | |
5390 | oc->flags |= NX_CT_F_COMMIT; | |
5391 | } else if (!strcmp(key, "table")) { | |
5392 | error = str_to_u8(value, "recirc_table", &oc->recirc_table); | |
5393 | if (!error && oc->recirc_table == NX_CT_RECIRC_NONE) { | |
5394 | error = xasprintf("invalid table %#"PRIx16, oc->recirc_table); | |
5395 | } | |
5396 | } else if (!strcmp(key, "zone")) { | |
5397 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
5398 | ||
5399 | if (error) { | |
5400 | free(error); | |
5401 | error = mf_parse_subfield(&oc->zone_src, value); | |
5402 | if (error) { | |
5403 | return error; | |
5404 | } | |
5405 | } | |
d787ad39 JS |
5406 | } else if (!strcmp(key, "alg")) { |
5407 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada JR |
5408 | } else if (!strcmp(key, "nat")) { |
5409 | const size_t nat_offset = ofpacts_pull(ofpacts); | |
5410 | ||
5411 | error = parse_NAT(value, ofpacts, usable_protocols); | |
9ac0aada JR |
5412 | /* Update CT action pointer and length. */ |
5413 | ofpacts->header = ofpbuf_push_uninit(ofpacts, nat_offset); | |
5414 | oc = ofpacts->header; | |
8e53fe8c JS |
5415 | } else if (!strcmp(key, "exec")) { |
5416 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
5417 | * nesting can be handled transparently. */ | |
76e3e669 | 5418 | enum ofputil_protocol usable_protocols2; |
9ac0aada | 5419 | const size_t exec_offset = ofpacts_pull(ofpacts); |
76e3e669 | 5420 | |
76e3e669 JR |
5421 | /* Initializes 'usable_protocol2', fold it back to |
5422 | * '*usable_protocols' afterwards, so that we do not lose | |
5423 | * restrictions already in there. */ | |
5424 | error = ofpacts_parse_copy(value, ofpacts, &usable_protocols2, | |
5425 | false, OFPACT_CT); | |
5426 | *usable_protocols &= usable_protocols2; | |
9ac0aada | 5427 | ofpacts->header = ofpbuf_push_uninit(ofpacts, exec_offset); |
8e53fe8c | 5428 | oc = ofpacts->header; |
07659514 JS |
5429 | } else { |
5430 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
5431 | } | |
5432 | if (error) { | |
5433 | break; | |
5434 | } | |
5435 | } | |
5436 | ||
ce058104 | 5437 | ofpact_finish_CT(ofpacts, &oc); |
8e53fe8c | 5438 | ofpbuf_push_uninit(ofpacts, ct_offset); |
07659514 JS |
5439 | return error; |
5440 | } | |
5441 | ||
d787ad39 JS |
5442 | static void |
5443 | format_alg(int port, struct ds *s) | |
5444 | { | |
40c7b2fc JS |
5445 | switch(port) { |
5446 | case IPPORT_FTP: | |
b1c5bf1f | 5447 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
5448 | break; |
5449 | case IPPORT_TFTP: | |
5450 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
5451 | break; | |
5452 | case 0: | |
5453 | /* Don't print. */ | |
5454 | break; | |
5455 | default: | |
b1c5bf1f | 5456 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 5457 | break; |
d787ad39 JS |
5458 | } |
5459 | } | |
5460 | ||
9ac0aada JR |
5461 | static void format_NAT(const struct ofpact_nat *a, struct ds *ds); |
5462 | ||
07659514 JS |
5463 | static void |
5464 | format_CT(const struct ofpact_conntrack *a, struct ds *s) | |
5465 | { | |
b1c5bf1f | 5466 | ds_put_format(s, "%sct(%s", colors.paren, colors.end); |
07659514 | 5467 | if (a->flags & NX_CT_F_COMMIT) { |
b1c5bf1f | 5468 | ds_put_format(s, "%scommit%s,", colors.value, colors.end); |
07659514 JS |
5469 | } |
5470 | if (a->recirc_table != NX_CT_RECIRC_NONE) { | |
b1c5bf1f QM |
5471 | ds_put_format(s, "%stable=%s%"PRIu8",", |
5472 | colors.special, colors.end, a->recirc_table); | |
07659514 JS |
5473 | } |
5474 | if (a->zone_src.field) { | |
b1c5bf1f | 5475 | ds_put_format(s, "%szone=%s", colors.param, colors.end); |
07659514 JS |
5476 | mf_format_subfield(&a->zone_src, s); |
5477 | ds_put_char(s, ','); | |
5478 | } else if (a->zone_imm) { | |
b1c5bf1f QM |
5479 | ds_put_format(s, "%szone=%s%"PRIu16",", |
5480 | colors.param, colors.end, a->zone_imm); | |
07659514 | 5481 | } |
9ac0aada JR |
5482 | /* If the first action is a NAT action, format it outside of the 'exec' |
5483 | * envelope. */ | |
5484 | const struct ofpact *action = a->actions; | |
5485 | size_t actions_len = ofpact_ct_get_action_len(a); | |
5486 | if (actions_len && action->type == OFPACT_NAT) { | |
5487 | format_NAT(ofpact_get_NAT(action), s); | |
5488 | ds_put_char(s, ','); | |
5489 | actions_len -= OFPACT_ALIGN(action->len); | |
5490 | action = ofpact_next(action); | |
5491 | } | |
5492 | if (actions_len) { | |
b1c5bf1f | 5493 | ds_put_format(s, "%sexec(%s", colors.paren, colors.end); |
9ac0aada | 5494 | ofpacts_format(action, actions_len, s); |
b1c5bf1f | 5495 | ds_put_format(s, "%s),%s", colors.paren, colors.end); |
8e53fe8c | 5496 | } |
d787ad39 | 5497 | format_alg(a->alg, s); |
07659514 | 5498 | ds_chomp(s, ','); |
b1c5bf1f | 5499 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
07659514 | 5500 | } |
9ac0aada | 5501 | \f |
72fe7578 BP |
5502 | /* ct_clear action. */ |
5503 | ||
5504 | static enum ofperr | |
5505 | decode_NXAST_RAW_CT_CLEAR(struct ofpbuf *out) | |
5506 | { | |
5507 | ofpact_put_CT_CLEAR(out); | |
5508 | return 0; | |
5509 | } | |
5510 | ||
5511 | static void | |
5512 | encode_CT_CLEAR(const struct ofpact_null *null OVS_UNUSED, | |
5513 | enum ofp_version ofp_version OVS_UNUSED, | |
5514 | struct ofpbuf *out) | |
5515 | { | |
5516 | put_NXAST_CT_CLEAR(out); | |
5517 | } | |
5518 | ||
5519 | static char * OVS_WARN_UNUSED_RESULT | |
5520 | parse_CT_CLEAR(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, | |
5521 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5522 | { | |
5523 | ofpact_put_CT_CLEAR(ofpacts); | |
5524 | return NULL; | |
5525 | } | |
5526 | ||
5527 | static void | |
5528 | format_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
5529 | { | |
5530 | ds_put_format(s, "%sct_clear%s", colors.value, colors.end); | |
5531 | }\f | |
9ac0aada JR |
5532 | /* NAT action. */ |
5533 | ||
5534 | /* Which optional fields are present? */ | |
5535 | enum nx_nat_range { | |
5536 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
5537 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
5538 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
5539 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
5540 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
5541 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
5542 | }; | |
5543 | ||
5544 | /* Action structure for NXAST_NAT. */ | |
5545 | struct nx_action_nat { | |
5546 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5547 | ovs_be16 len; /* At least 16. */ | |
5548 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5549 | ovs_be16 subtype; /* NXAST_NAT. */ | |
5550 | uint8_t pad[2]; /* Must be zero. */ | |
5551 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
5552 | * Unspecified flag bits must be zero. */ | |
5553 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
5554 | /* Followed by optional parameters as specified by 'range_present' */ | |
5555 | }; | |
5556 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
5557 | ||
5558 | static void | |
5559 | encode_NAT(const struct ofpact_nat *nat, | |
5560 | enum ofp_version ofp_version OVS_UNUSED, | |
5561 | struct ofpbuf *out) | |
5562 | { | |
5563 | struct nx_action_nat *nan; | |
5564 | const size_t ofs = out->size; | |
5565 | uint16_t range_present = 0; | |
5566 | ||
5567 | nan = put_NXAST_NAT(out); | |
5568 | nan->flags = htons(nat->flags); | |
5569 | if (nat->range_af == AF_INET) { | |
5570 | if (nat->range.addr.ipv4.min) { | |
5571 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
5572 | *min = nat->range.addr.ipv4.min; | |
5573 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
5574 | } | |
5575 | if (nat->range.addr.ipv4.max) { | |
5576 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
5577 | *max = nat->range.addr.ipv4.max; | |
5578 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
5579 | } | |
5580 | } else if (nat->range_af == AF_INET6) { | |
5581 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
5582 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
5583 | *min = nat->range.addr.ipv6.min; | |
5584 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
5585 | } | |
5586 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
5587 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
5588 | *max = nat->range.addr.ipv6.max; | |
5589 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
5590 | } | |
5591 | } | |
5592 | if (nat->range_af != AF_UNSPEC) { | |
5593 | if (nat->range.proto.min) { | |
5594 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
5595 | *min = htons(nat->range.proto.min); | |
5596 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
5597 | } | |
5598 | if (nat->range.proto.max) { | |
5599 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
5600 | *max = htons(nat->range.proto.max); | |
5601 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
5602 | } | |
5603 | } | |
5604 | pad_ofpat(out, ofs); | |
5605 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
5606 | nan->range_present = htons(range_present); | |
5607 | } | |
5608 | ||
5609 | static enum ofperr | |
5610 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
5611 | enum ofp_version ofp_version OVS_UNUSED, | |
5612 | struct ofpbuf *out) | |
5613 | { | |
5614 | struct ofpact_nat *nat; | |
5615 | uint16_t range_present = ntohs(nan->range_present); | |
5616 | const char *opts = (char *)(nan + 1); | |
5617 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
5618 | ||
5619 | nat = ofpact_put_NAT(out); | |
5620 | nat->flags = ntohs(nan->flags); | |
5621 | ||
ae8b9260 JR |
5622 | /* Check for unknown or mutually exclusive flags. */ |
5623 | if ((nat->flags & ~NX_NAT_F_MASK) | |
5624 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
5625 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
5626 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
5627 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5628 | } | |
5629 | ||
9ac0aada JR |
5630 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
5631 | (LEN >= sizeof(TYPE) \ | |
5632 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
5633 | SRC += sizeof(TYPE)) \ | |
5634 | : NULL) | |
5635 | ||
5636 | nat->range_af = AF_UNSPEC; | |
5637 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
5638 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
5639 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5640 | } | |
5641 | ||
5642 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
5643 | || !nat->range.addr.ipv4.min) { | |
5644 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5645 | } | |
5646 | ||
5647 | nat->range_af = AF_INET; | |
5648 | ||
5649 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
5650 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
5651 | ovs_be32)) { | |
5652 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5653 | } | |
5654 | if (ntohl(nat->range.addr.ipv4.max) | |
5655 | < ntohl(nat->range.addr.ipv4.min)) { | |
5656 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5657 | } | |
5658 | } | |
5659 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
5660 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5661 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
5662 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
5663 | struct in6_addr) | |
5664 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
5665 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5666 | } | |
5667 | ||
5668 | nat->range_af = AF_INET6; | |
5669 | ||
5670 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
5671 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
5672 | struct in6_addr)) { | |
5673 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5674 | } | |
5675 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
5676 | sizeof(struct in6_addr)) < 0) { | |
5677 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5678 | } | |
5679 | } | |
5680 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
5681 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5682 | } | |
5683 | ||
5684 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
5685 | ovs_be16 proto; | |
5686 | ||
5687 | if (nat->range_af == AF_UNSPEC) { | |
5688 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5689 | } | |
5690 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
5691 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5692 | } | |
5693 | nat->range.proto.min = ntohs(proto); | |
5694 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
5695 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
5696 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5697 | } | |
5698 | nat->range.proto.max = ntohs(proto); | |
5699 | if (nat->range.proto.max < nat->range.proto.min) { | |
5700 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5701 | } | |
5702 | } | |
5703 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
5704 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5705 | } | |
5706 | ||
5707 | return 0; | |
5708 | } | |
5709 | ||
5710 | static void | |
5711 | format_NAT(const struct ofpact_nat *a, struct ds *ds) | |
5712 | { | |
b1c5bf1f | 5713 | ds_put_format(ds, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
5714 | |
5715 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
b1c5bf1f QM |
5716 | ds_put_format(ds, "%s(%s", colors.paren, colors.end); |
5717 | ds_put_format(ds, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
5718 | colors.param, colors.end); | |
9ac0aada JR |
5719 | |
5720 | if (a->range_af != AF_UNSPEC) { | |
b1c5bf1f | 5721 | ds_put_format(ds, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
5722 | |
5723 | if (a->range_af == AF_INET) { | |
5724 | ds_put_format(ds, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); | |
5725 | ||
5726 | if (a->range.addr.ipv4.max | |
5727 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
5728 | ds_put_format(ds, "-"IP_FMT, | |
5729 | IP_ARGS(a->range.addr.ipv4.max)); | |
5730 | } | |
5731 | } else if (a->range_af == AF_INET6) { | |
5732 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, ds, | |
5733 | a->range.proto.min); | |
5734 | ||
5735 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
5736 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
5737 | sizeof(struct in6_addr)) != 0) { | |
5738 | ds_put_char(ds, '-'); | |
5739 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, ds, | |
5740 | a->range.proto.min); | |
5741 | } | |
5742 | } | |
5743 | if (a->range.proto.min) { | |
5744 | ds_put_char(ds, ':'); | |
5745 | ds_put_format(ds, "%"PRIu16, a->range.proto.min); | |
5746 | ||
5747 | if (a->range.proto.max | |
5748 | && a->range.proto.max != a->range.proto.min) { | |
5749 | ds_put_format(ds, "-%"PRIu16, a->range.proto.max); | |
5750 | } | |
5751 | } | |
5752 | ds_put_char(ds, ','); | |
5753 | ||
5754 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
b1c5bf1f QM |
5755 | ds_put_format(ds, "%spersistent%s,", |
5756 | colors.value, colors.end); | |
9ac0aada JR |
5757 | } |
5758 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
b1c5bf1f | 5759 | ds_put_format(ds, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
5760 | } |
5761 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
b1c5bf1f | 5762 | ds_put_format(ds, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
5763 | } |
5764 | } | |
5765 | ds_chomp(ds, ','); | |
b1c5bf1f | 5766 | ds_put_format(ds, "%s)%s", colors.paren, colors.end); |
9ac0aada JR |
5767 | } |
5768 | } | |
5769 | ||
5770 | static char * OVS_WARN_UNUSED_RESULT | |
5771 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
5772 | { | |
5773 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
5774 | int n = 0; | |
5775 | ||
5776 | on->range_af = AF_UNSPEC; | |
5777 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
5778 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
5779 | on->range_af = AF_INET; | |
5780 | ||
5781 | if (s[n] == '-') { | |
5782 | n++; | |
5783 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
5784 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
5785 | || (ntohl(on->range.addr.ipv4.max) | |
5786 | < ntohl(on->range.addr.ipv4.min))) { | |
5787 | goto error; | |
5788 | } | |
5789 | } | |
5790 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
5791 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
5792 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
5793 | on->range_af = AF_INET6; | |
5794 | ||
5795 | if (s[n] == '-') { | |
5796 | n++; | |
5797 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
5798 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
5799 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
5800 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
5801 | sizeof on->range.addr.ipv6.max) < 0) { | |
5802 | goto error; | |
5803 | } | |
5804 | } | |
5805 | } | |
5806 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
5807 | n++; | |
5808 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
5809 | goto error; | |
5810 | } | |
5811 | if (s[n] == '-') { | |
5812 | n++; | |
5813 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
5814 | || on->range.proto.max < on->range.proto.min) { | |
5815 | goto error; | |
5816 | } | |
5817 | } | |
5818 | } | |
5819 | if (strlen(s) != n) { | |
5820 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
5821 | &s[n], s, n); | |
5822 | } | |
5823 | return NULL; | |
5824 | error: | |
5825 | return xasprintf("invalid nat range \"%s\"", s); | |
5826 | } | |
5827 | ||
5828 | ||
5829 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
5830 | * action to 'ofpacts'. | |
5831 | * | |
5832 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5833 | * error. The caller is responsible for freeing the returned string. */ | |
5834 | static char * OVS_WARN_UNUSED_RESULT | |
5835 | parse_NAT(char *arg, struct ofpbuf *ofpacts, | |
5836 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5837 | { | |
5838 | struct ofpact_nat *on = ofpact_put_NAT(ofpacts); | |
5839 | char *key, *value; | |
5840 | ||
5841 | on->flags = 0; | |
5842 | on->range_af = AF_UNSPEC; | |
5843 | ||
5844 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
5845 | char *error = NULL; | |
5846 | ||
5847 | if (!strcmp(key, "src")) { | |
5848 | on->flags |= NX_NAT_F_SRC; | |
5849 | error = str_to_nat_range(value, on); | |
5850 | } else if (!strcmp(key, "dst")) { | |
5851 | on->flags |= NX_NAT_F_DST; | |
5852 | error = str_to_nat_range(value, on); | |
5853 | } else if (!strcmp(key, "persistent")) { | |
5854 | on->flags |= NX_NAT_F_PERSISTENT; | |
5855 | } else if (!strcmp(key, "hash")) { | |
5856 | on->flags |= NX_NAT_F_PROTO_HASH; | |
5857 | } else if (!strcmp(key, "random")) { | |
5858 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
5859 | } else { | |
5860 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
5861 | key); | |
5862 | } | |
5863 | if (error) { | |
5864 | return error; | |
5865 | } | |
5866 | } | |
5867 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 5868 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
5869 | } |
5870 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
5871 | if (on->flags) { | |
ae8b9260 | 5872 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
5873 | } |
5874 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 5875 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
5876 | } |
5877 | } | |
ae8b9260 JR |
5878 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
5879 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
5880 | } | |
5881 | ||
9ac0aada JR |
5882 | return NULL; |
5883 | } | |
5884 | ||
aaca4fe0 WT |
5885 | /* Truncate output action. */ |
5886 | struct nx_action_output_trunc { | |
5887 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5888 | ovs_be16 len; /* At least 16. */ | |
5889 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5890 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
5891 | ovs_be16 port; /* Output port */ | |
5892 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
5893 | }; | |
5894 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
5895 | ||
5896 | static enum ofperr | |
5897 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
5898 | enum ofp_version ofp_version OVS_UNUSED, | |
5899 | struct ofpbuf *out) | |
5900 | { | |
5901 | struct ofpact_output_trunc *output_trunc; | |
5902 | ||
5903 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
5904 | output_trunc->max_len = ntohl(natrc->max_len); | |
5905 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
5906 | ||
5907 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
5908 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5909 | } | |
5910 | return 0; | |
5911 | } | |
5912 | ||
5913 | static void | |
5914 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
5915 | enum ofp_version ofp_version OVS_UNUSED, | |
5916 | struct ofpbuf *out) | |
5917 | { | |
5918 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
5919 | ||
5920 | natrc->max_len = htonl(output_trunc->max_len); | |
5921 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
5922 | } | |
5923 | ||
5924 | static char * OVS_WARN_UNUSED_RESULT | |
5925 | parse_OUTPUT_TRUNC(const char *arg, struct ofpbuf *ofpacts OVS_UNUSED, | |
5926 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5927 | { | |
5928 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
5929 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
5930 | return xasprintf("unknown action %s", arg); | |
5931 | } | |
5932 | ||
5933 | static void | |
5934 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, struct ds *s) | |
5935 | { | |
94783c7c | 5936 | ds_put_format(s, "%soutput%s(port=%"PRIu32",max_len=%"PRIu32")", |
aaca4fe0 WT |
5937 | colors.special, colors.end, a->port, a->max_len); |
5938 | } | |
5939 | ||
d4abaff5 | 5940 | \f |
c2d936a4 BP |
5941 | /* Meter instruction. */ |
5942 | ||
5943 | static void | |
5944 | encode_METER(const struct ofpact_meter *meter, | |
5945 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5946 | { | |
5947 | if (ofp_version >= OFP13_VERSION) { | |
5948 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
5949 | } | |
5950 | } | |
5951 | ||
cab50449 | 5952 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5953 | parse_METER(char *arg, struct ofpbuf *ofpacts, |
5954 | enum ofputil_protocol *usable_protocols) | |
5955 | { | |
5956 | *usable_protocols &= OFPUTIL_P_OF13_UP; | |
5957 | return str_to_u32(arg, &ofpact_put_METER(ofpacts)->meter_id); | |
5958 | } | |
5959 | ||
5960 | static void | |
5961 | format_METER(const struct ofpact_meter *a, struct ds *s) | |
5962 | { | |
b1c5bf1f QM |
5963 | ds_put_format(s, "%smeter:%s%"PRIu32, |
5964 | colors.param, colors.end, a->meter_id); | |
c2d936a4 BP |
5965 | } |
5966 | \f | |
5967 | /* Clear-Actions instruction. */ | |
5968 | ||
5969 | static void | |
5970 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
5971 | enum ofp_version ofp_version OVS_UNUSED, | |
5972 | struct ofpbuf *out OVS_UNUSED) | |
5973 | { | |
5974 | if (ofp_version > OFP10_VERSION) { | |
5975 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
5976 | } | |
5977 | } | |
5978 | ||
cab50449 | 5979 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5980 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
5981 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5982 | { | |
5983 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
5984 | return NULL; | |
5985 | } | |
5986 | ||
5987 | static void | |
5988 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
5989 | { | |
b1c5bf1f | 5990 | ds_put_format(s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 BP |
5991 | } |
5992 | \f | |
5993 | /* Write-Actions instruction. */ | |
5994 | ||
5995 | static void | |
5996 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
5997 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5998 | { | |
5999 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 6000 | const size_t ofs = out->size; |
c2d936a4 BP |
6001 | |
6002 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
6003 | ofpacts_put_openflow_actions(actions->actions, | |
6004 | ofpact_nest_get_action_len(actions), | |
6005 | out, ofp_version); | |
6006 | ofpacts_update_instruction_actions(out, ofs); | |
6007 | } | |
6008 | } | |
6009 | ||
cab50449 | 6010 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
6011 | parse_WRITE_ACTIONS(char *arg, struct ofpbuf *ofpacts, |
6012 | enum ofputil_protocol *usable_protocols) | |
6013 | { | |
d824b5b7 | 6014 | size_t ofs = ofpacts_pull(ofpacts); |
c2d936a4 BP |
6015 | struct ofpact_nest *on; |
6016 | char *error; | |
c2d936a4 BP |
6017 | |
6018 | /* Add a Write-Actions instruction and then pull it off. */ | |
6019 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); | |
6020 | ofpbuf_pull(ofpacts, sizeof *on); | |
6021 | ||
6022 | /* Parse nested actions. | |
6023 | * | |
6024 | * We pulled off "write-actions" and the previous actions because the | |
6025 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
6026 | * that it doesn't actually include the nested actions. That means that | |
6027 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
6028 | * follows a Write-Actions, which is an invalid order. */ | |
d824b5b7 JS |
6029 | error = ofpacts_parse(arg, ofpacts, usable_protocols, false, |
6030 | OFPACT_WRITE_ACTIONS); | |
c2d936a4 BP |
6031 | |
6032 | /* Put the Write-Actions back on and update its length. */ | |
6033 | on = ofpbuf_push_uninit(ofpacts, sizeof *on); | |
6fd6ed71 | 6034 | on->ofpact.len = ofpacts->size; |
c2d936a4 BP |
6035 | |
6036 | /* Put any previous actions or instructions back on. */ | |
6037 | ofpbuf_push_uninit(ofpacts, ofs); | |
6038 | ||
6039 | return error; | |
6040 | } | |
6041 | ||
6042 | static void | |
6043 | format_WRITE_ACTIONS(const struct ofpact_nest *a, struct ds *s) | |
6044 | { | |
b1c5bf1f | 6045 | ds_put_format(s, "%swrite_actions(%s", colors.paren, colors.end); |
c2d936a4 | 6046 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), s); |
b1c5bf1f | 6047 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
6048 | } |
6049 | \f | |
6050 | /* Action structure for NXAST_WRITE_METADATA. | |
6051 | * | |
6052 | * Modifies the 'mask' bits of the metadata value. */ | |
6053 | struct nx_action_write_metadata { | |
6054 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6055 | ovs_be16 len; /* Length is 32. */ | |
6056 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6057 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
6058 | uint8_t zeros[6]; /* Must be zero. */ | |
6059 | ovs_be64 metadata; /* Metadata register. */ | |
6060 | ovs_be64 mask; /* Metadata mask. */ | |
6061 | }; | |
6062 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
6063 | ||
6064 | static enum ofperr | |
6065 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 6066 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
6067 | struct ofpbuf *out) |
6068 | { | |
6069 | struct ofpact_metadata *om; | |
6070 | ||
6071 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
6072 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6073 | } | |
6074 | ||
6075 | om = ofpact_put_WRITE_METADATA(out); | |
6076 | om->metadata = nawm->metadata; | |
6077 | om->mask = nawm->mask; | |
6078 | ||
6079 | return 0; | |
6080 | } | |
6081 | ||
6082 | static void | |
6083 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
6084 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6085 | { | |
6086 | if (ofp_version == OFP10_VERSION) { | |
6087 | struct nx_action_write_metadata *nawm; | |
6088 | ||
6089 | nawm = put_NXAST_WRITE_METADATA(out); | |
6090 | nawm->metadata = metadata->metadata; | |
6091 | nawm->mask = metadata->mask; | |
6092 | } else { | |
6093 | struct ofp11_instruction_write_metadata *oiwm; | |
6094 | ||
6095 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
6096 | oiwm->metadata = metadata->metadata; | |
6097 | oiwm->metadata_mask = metadata->mask; | |
6098 | } | |
6099 | } | |
6100 | ||
cab50449 | 6101 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
6102 | parse_WRITE_METADATA(char *arg, struct ofpbuf *ofpacts, |
6103 | enum ofputil_protocol *usable_protocols) | |
6104 | { | |
6105 | struct ofpact_metadata *om; | |
6106 | char *mask = strchr(arg, '/'); | |
6107 | ||
6108 | *usable_protocols &= OFPUTIL_P_NXM_OF11_UP; | |
6109 | ||
6110 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
6111 | if (mask) { | |
6112 | char *error; | |
6113 | ||
6114 | *mask = '\0'; | |
6115 | error = str_to_be64(mask + 1, &om->mask); | |
6116 | if (error) { | |
6117 | return error; | |
6118 | } | |
6119 | } else { | |
6120 | om->mask = OVS_BE64_MAX; | |
6121 | } | |
6122 | ||
6123 | return str_to_be64(arg, &om->metadata); | |
6124 | } | |
6125 | ||
6126 | static void | |
6127 | format_WRITE_METADATA(const struct ofpact_metadata *a, struct ds *s) | |
6128 | { | |
b1c5bf1f QM |
6129 | ds_put_format(s, "%swrite_metadata:%s%#"PRIx64, |
6130 | colors.param, colors.end, ntohll(a->metadata)); | |
c2d936a4 BP |
6131 | if (a->mask != OVS_BE64_MAX) { |
6132 | ds_put_format(s, "/%#"PRIx64, ntohll(a->mask)); | |
6133 | } | |
4cceacb9 | 6134 | } |
f25d0cf3 | 6135 | \f |
c2d936a4 | 6136 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
6137 | |
6138 | static void | |
c2d936a4 BP |
6139 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
6140 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 6141 | { |
c2d936a4 BP |
6142 | if (ofp_version == OFP10_VERSION) { |
6143 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 6144 | |
c2d936a4 BP |
6145 | nar = put_NXAST_RESUBMIT_TABLE(out); |
6146 | nar->table = goto_table->table_id; | |
6147 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
6148 | } else { | |
6149 | struct ofp11_instruction_goto_table *oigt; | |
6150 | ||
6151 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
6152 | oigt->table_id = goto_table->table_id; | |
6153 | memset(oigt->pad, 0, sizeof oigt->pad); | |
6154 | } | |
6155 | } | |
6156 | ||
cab50449 | 6157 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
6158 | parse_GOTO_TABLE(char *arg, struct ofpbuf *ofpacts, |
6159 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
6160 | { | |
6161 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
6162 | char *table_s = strsep(&arg, ","); | |
6163 | if (!table_s || !table_s[0]) { | |
6164 | return xstrdup("instruction goto-table needs table id"); | |
6165 | } | |
6166 | return str_to_u8(table_s, "table", &ogt->table_id); | |
6167 | } | |
6168 | ||
6169 | static void | |
6170 | format_GOTO_TABLE(const struct ofpact_goto_table *a, struct ds *s) | |
6171 | { | |
b1c5bf1f QM |
6172 | ds_put_format(s, "%sgoto_table:%s%"PRIu8, |
6173 | colors.param, colors.end, a->table_id); | |
c2d936a4 BP |
6174 | } |
6175 | \f | |
6176 | static void | |
5ad4b3f8 | 6177 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
6178 | const struct ofp_action_header *bad_action, enum ofperr error) |
6179 | { | |
6180 | if (!VLOG_DROP_WARN(&rl)) { | |
6181 | struct ds s; | |
6182 | ||
6183 | ds_init(&s); | |
5ad4b3f8 | 6184 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
6185 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
6186 | (char *)bad_action - (char *)actions, | |
6187 | ofperr_get_name(error), ds_cstr(&s)); | |
6188 | ds_destroy(&s); | |
6189 | } | |
6190 | } | |
6191 | ||
6192 | static enum ofperr | |
6193 | ofpacts_decode(const void *actions, size_t actions_len, | |
6194 | enum ofp_version ofp_version, struct ofpbuf *ofpacts) | |
6195 | { | |
0a2869d5 | 6196 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
6197 | while (openflow.size) { |
6198 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
6199 | enum ofp_raw_action_type raw; |
6200 | enum ofperr error; | |
6201 | uint64_t arg; | |
6202 | ||
6203 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
6204 | if (!error) { | |
f3cd3ac7 | 6205 | error = ofpact_decode(action, raw, ofp_version, arg, ofpacts); |
c2d936a4 BP |
6206 | } |
6207 | ||
6208 | if (error) { | |
5ad4b3f8 | 6209 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
6210 | return error; |
6211 | } | |
6212 | } | |
c2d936a4 BP |
6213 | return 0; |
6214 | } | |
6215 | ||
6216 | static enum ofperr | |
6217 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
6218 | unsigned int actions_len, | |
6219 | enum ofp_version version, | |
6220 | uint32_t allowed_ovsinsts, | |
d824b5b7 JS |
6221 | struct ofpbuf *ofpacts, |
6222 | enum ofpact_type outer_action) | |
c2d936a4 BP |
6223 | { |
6224 | const struct ofp_action_header *actions; | |
9abca1e5 | 6225 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
6226 | enum ofperr error; |
6227 | ||
c2d936a4 BP |
6228 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
6229 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
6230 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
6231 | return OFPERR_OFPBRC_BAD_LEN; | |
6232 | } | |
6233 | ||
6234 | actions = ofpbuf_try_pull(openflow, actions_len); | |
6235 | if (actions == NULL) { | |
6236 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
6237 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6238 | actions_len, openflow->size); |
c2d936a4 BP |
6239 | return OFPERR_OFPBRC_BAD_LEN; |
6240 | } | |
6241 | ||
6242 | error = ofpacts_decode(actions, actions_len, version, ofpacts); | |
6243 | if (error) { | |
9abca1e5 | 6244 | ofpacts->size = orig_size; |
c2d936a4 BP |
6245 | return error; |
6246 | } | |
6247 | ||
d824b5b7 JS |
6248 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
6249 | outer_action); | |
c2d936a4 | 6250 | if (error) { |
9abca1e5 | 6251 | ofpacts->size = orig_size; |
c2d936a4 BP |
6252 | } |
6253 | return error; | |
6254 | } | |
6255 | ||
9abca1e5 BP |
6256 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
6257 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
6258 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
6259 | * Returns 0 if successful, otherwise an OpenFlow error. |
6260 | * | |
6261 | * Actions are processed according to their OpenFlow version which | |
6262 | * is provided in the 'version' parameter. | |
6263 | * | |
6264 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
6265 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
6266 | * function. | |
6267 | * | |
6268 | * The parsed actions are valid generically, but they may not be valid in a | |
6269 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
6270 | * generically, but specific datapaths may only support port numbers in a | |
6271 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
6272 | * valid in a specific context. */ | |
6273 | enum ofperr | |
6274 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
6275 | unsigned int actions_len, | |
6276 | enum ofp_version version, | |
6277 | struct ofpbuf *ofpacts) | |
6278 | { | |
6279 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
6280 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
d824b5b7 | 6281 | ofpacts, 0); |
c2d936a4 BP |
6282 | } |
6283 | \f | |
6284 | /* OpenFlow 1.1 actions. */ | |
6285 | ||
6286 | ||
6287 | /* True if an action sets the value of a field | |
6288 | * in a way that is compatibile with the action set. | |
1b0ee636 | 6289 | * The field can be set via either a set or a move action. |
c2d936a4 BP |
6290 | * False otherwise. */ |
6291 | static bool | |
1b0ee636 | 6292 | ofpact_is_set_or_move_action(const struct ofpact *a) |
c2d936a4 BP |
6293 | { |
6294 | switch (a->type) { | |
6295 | case OFPACT_SET_FIELD: | |
1b0ee636 | 6296 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
6297 | case OFPACT_SET_ETH_DST: |
6298 | case OFPACT_SET_ETH_SRC: | |
6299 | case OFPACT_SET_IP_DSCP: | |
6300 | case OFPACT_SET_IP_ECN: | |
6301 | case OFPACT_SET_IP_TTL: | |
6302 | case OFPACT_SET_IPV4_DST: | |
6303 | case OFPACT_SET_IPV4_SRC: | |
6304 | case OFPACT_SET_L4_DST_PORT: | |
6305 | case OFPACT_SET_L4_SRC_PORT: | |
6306 | case OFPACT_SET_MPLS_LABEL: | |
6307 | case OFPACT_SET_MPLS_TC: | |
6308 | case OFPACT_SET_MPLS_TTL: | |
6309 | case OFPACT_SET_QUEUE: | |
6310 | case OFPACT_SET_TUNNEL: | |
6311 | case OFPACT_SET_VLAN_PCP: | |
6312 | case OFPACT_SET_VLAN_VID: | |
6313 | return true; | |
6314 | case OFPACT_BUNDLE: | |
6315 | case OFPACT_CLEAR_ACTIONS: | |
07659514 | 6316 | case OFPACT_CT: |
72fe7578 | 6317 | case OFPACT_CT_CLEAR: |
7ae62a67 | 6318 | case OFPACT_CLONE: |
9ac0aada | 6319 | case OFPACT_NAT: |
c2d936a4 BP |
6320 | case OFPACT_CONTROLLER: |
6321 | case OFPACT_DEC_MPLS_TTL: | |
6322 | case OFPACT_DEC_TTL: | |
6323 | case OFPACT_ENQUEUE: | |
6324 | case OFPACT_EXIT: | |
e672ff9b | 6325 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
6326 | case OFPACT_FIN_TIMEOUT: |
6327 | case OFPACT_GOTO_TABLE: | |
6328 | case OFPACT_GROUP: | |
6329 | case OFPACT_LEARN: | |
18080541 | 6330 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6331 | case OFPACT_METER: |
6332 | case OFPACT_MULTIPATH: | |
6333 | case OFPACT_NOTE: | |
6334 | case OFPACT_OUTPUT: | |
6335 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 6336 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 BP |
6337 | case OFPACT_POP_MPLS: |
6338 | case OFPACT_POP_QUEUE: | |
6339 | case OFPACT_PUSH_MPLS: | |
6340 | case OFPACT_PUSH_VLAN: | |
c2d936a4 BP |
6341 | case OFPACT_RESUBMIT: |
6342 | case OFPACT_SAMPLE: | |
6343 | case OFPACT_STACK_POP: | |
6344 | case OFPACT_STACK_PUSH: | |
6345 | case OFPACT_STRIP_VLAN: | |
6346 | case OFPACT_WRITE_ACTIONS: | |
6347 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 6348 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
6349 | return false; |
6350 | default: | |
6351 | OVS_NOT_REACHED(); | |
6352 | } | |
6353 | } | |
6354 | ||
6355 | /* True if an action is allowed in the action set. | |
6356 | * False otherwise. */ | |
6357 | static bool | |
6358 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
6359 | { | |
6360 | switch (a->type) { | |
6361 | case OFPACT_DEC_MPLS_TTL: | |
6362 | case OFPACT_DEC_TTL: | |
6363 | case OFPACT_GROUP: | |
6364 | case OFPACT_OUTPUT: | |
aaca4fe0 | 6365 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 BP |
6366 | case OFPACT_POP_MPLS: |
6367 | case OFPACT_PUSH_MPLS: | |
6368 | case OFPACT_PUSH_VLAN: | |
1b0ee636 | 6369 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
6370 | case OFPACT_SET_FIELD: |
6371 | case OFPACT_SET_ETH_DST: | |
6372 | case OFPACT_SET_ETH_SRC: | |
6373 | case OFPACT_SET_IP_DSCP: | |
6374 | case OFPACT_SET_IP_ECN: | |
6375 | case OFPACT_SET_IP_TTL: | |
6376 | case OFPACT_SET_IPV4_DST: | |
6377 | case OFPACT_SET_IPV4_SRC: | |
6378 | case OFPACT_SET_L4_DST_PORT: | |
6379 | case OFPACT_SET_L4_SRC_PORT: | |
6380 | case OFPACT_SET_MPLS_LABEL: | |
6381 | case OFPACT_SET_MPLS_TC: | |
6382 | case OFPACT_SET_MPLS_TTL: | |
6383 | case OFPACT_SET_QUEUE: | |
6384 | case OFPACT_SET_TUNNEL: | |
6385 | case OFPACT_SET_VLAN_PCP: | |
6386 | case OFPACT_SET_VLAN_VID: | |
6387 | case OFPACT_STRIP_VLAN: | |
6388 | return true; | |
6389 | ||
6390 | /* In general these actions are excluded because they are not part of | |
6391 | * the OpenFlow specification nor map to actions that are defined in | |
6392 | * the specification. Thus the order in which they should be applied | |
6393 | * in the action set is undefined. */ | |
6394 | case OFPACT_BUNDLE: | |
7ae62a67 | 6395 | case OFPACT_CLONE: |
c2d936a4 | 6396 | case OFPACT_CONTROLLER: |
07659514 | 6397 | case OFPACT_CT: |
72fe7578 | 6398 | case OFPACT_CT_CLEAR: |
9ac0aada | 6399 | case OFPACT_NAT: |
c2d936a4 BP |
6400 | case OFPACT_ENQUEUE: |
6401 | case OFPACT_EXIT: | |
e672ff9b | 6402 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
6403 | case OFPACT_FIN_TIMEOUT: |
6404 | case OFPACT_LEARN: | |
18080541 | 6405 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6406 | case OFPACT_MULTIPATH: |
6407 | case OFPACT_NOTE: | |
6408 | case OFPACT_OUTPUT_REG: | |
6409 | case OFPACT_POP_QUEUE: | |
c2d936a4 BP |
6410 | case OFPACT_RESUBMIT: |
6411 | case OFPACT_SAMPLE: | |
6412 | case OFPACT_STACK_POP: | |
6413 | case OFPACT_STACK_PUSH: | |
d4abaff5 | 6414 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
6415 | |
6416 | /* The action set may only include actions and thus | |
6417 | * may not include any instructions */ | |
6418 | case OFPACT_CLEAR_ACTIONS: | |
6419 | case OFPACT_GOTO_TABLE: | |
6420 | case OFPACT_METER: | |
6421 | case OFPACT_WRITE_ACTIONS: | |
6422 | case OFPACT_WRITE_METADATA: | |
6423 | return false; | |
6424 | default: | |
6425 | OVS_NOT_REACHED(); | |
6426 | } | |
f25d0cf3 BP |
6427 | } |
6428 | ||
c2d936a4 | 6429 | /* Append ofpact 'a' onto the tail of 'out' */ |
f25d0cf3 | 6430 | static void |
c2d936a4 | 6431 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) |
f25d0cf3 | 6432 | { |
c2d936a4 | 6433 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); |
f25d0cf3 BP |
6434 | } |
6435 | ||
c2d936a4 BP |
6436 | /* Copies the last ofpact whose type is 'filter' from 'in' to 'out'. */ |
6437 | static bool | |
6438 | ofpacts_copy_last(struct ofpbuf *out, const struct ofpbuf *in, | |
6439 | enum ofpact_type filter) | |
f25d0cf3 | 6440 | { |
c2d936a4 BP |
6441 | const struct ofpact *target; |
6442 | const struct ofpact *a; | |
f25d0cf3 | 6443 | |
c2d936a4 | 6444 | target = NULL; |
6fd6ed71 | 6445 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
6446 | if (a->type == filter) { |
6447 | target = a; | |
6448 | } | |
6449 | } | |
6450 | if (target) { | |
6451 | ofpact_copy(out, target); | |
f25d0cf3 | 6452 | } |
c2d936a4 | 6453 | return target != NULL; |
f25d0cf3 BP |
6454 | } |
6455 | ||
c2d936a4 BP |
6456 | /* Append all ofpacts, for which 'filter' returns true, from 'in' to 'out'. |
6457 | * The order of appended ofpacts is preserved between 'in' and 'out' */ | |
4cceacb9 | 6458 | static void |
c2d936a4 BP |
6459 | ofpacts_copy_all(struct ofpbuf *out, const struct ofpbuf *in, |
6460 | bool (*filter)(const struct ofpact *)) | |
4cceacb9 | 6461 | { |
c2d936a4 | 6462 | const struct ofpact *a; |
4cceacb9 | 6463 | |
6fd6ed71 | 6464 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
6465 | if (filter(a)) { |
6466 | ofpact_copy(out, a); | |
6467 | } | |
6468 | } | |
4cceacb9 JS |
6469 | } |
6470 | ||
c2d936a4 BP |
6471 | /* Reads 'action_set', which contains ofpacts accumulated by |
6472 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
6473 | * executed directly into 'action_list'. (These names correspond to the | |
6474 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
6475 | * | |
6476 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 6477 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
6478 | * specification. |
6479 | * | |
6480 | * Exceptions: | |
6481 | * + output action is only appended if no group action was present in 'in'. | |
6482 | * + As a simplification all set actions are copied in the order the are | |
6483 | * provided in 'in' as many set actions applied to a field has the same | |
6484 | * affect as only applying the last action that sets a field and | |
6485 | * duplicates are removed by do_xlate_actions(). | |
6486 | * This has an unwanted side-effect of compsoting multiple | |
6487 | * LOAD_REG actions that touch different regions of the same field. */ | |
6488 | void | |
6489 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
6490 | const struct ofpbuf *action_set) | |
f25d0cf3 | 6491 | { |
c2d936a4 BP |
6492 | /* The OpenFlow spec "Action Set" section specifies this order. */ |
6493 | ofpacts_copy_last(action_list, action_set, OFPACT_STRIP_VLAN); | |
6494 | ofpacts_copy_last(action_list, action_set, OFPACT_POP_MPLS); | |
6495 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_MPLS); | |
6496 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_VLAN); | |
6497 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_TTL); | |
6498 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_MPLS_TTL); | |
1b0ee636 | 6499 | ofpacts_copy_all(action_list, action_set, ofpact_is_set_or_move_action); |
c2d936a4 | 6500 | ofpacts_copy_last(action_list, action_set, OFPACT_SET_QUEUE); |
f25d0cf3 | 6501 | |
c2d936a4 BP |
6502 | /* If both OFPACT_GROUP and OFPACT_OUTPUT are present, OpenFlow says that |
6503 | * we should execute only OFPACT_GROUP. | |
6504 | * | |
6505 | * If neither OFPACT_GROUP nor OFPACT_OUTPUT is present, then we can drop | |
6506 | * all the actions because there's no point in modifying a packet that will | |
6507 | * not be sent anywhere. */ | |
6508 | if (!ofpacts_copy_last(action_list, action_set, OFPACT_GROUP) && | |
2e34a6a3 | 6509 | !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT) && |
2c66ebe4 JR |
6510 | !ofpacts_copy_last(action_list, action_set, OFPACT_RESUBMIT) && |
6511 | !ofpacts_copy_last(action_list, action_set, OFPACT_CT)) { | |
c2d936a4 | 6512 | ofpbuf_clear(action_list); |
f25d0cf3 | 6513 | } |
f25d0cf3 BP |
6514 | } |
6515 | ||
f25d0cf3 | 6516 | |
c2d936a4 BP |
6517 | static enum ofperr |
6518 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
6519 | size_t n_in, enum ofp_version version, | |
6520 | struct ofpbuf *out) | |
c2d967a5 | 6521 | { |
c2d936a4 BP |
6522 | enum ofperr error; |
6523 | struct ofpact *a; | |
6fd6ed71 | 6524 | size_t start = out->size; |
c2d967a5 | 6525 | |
c2d936a4 | 6526 | error = ofpacts_decode(in, n_in, version, out); |
c2d967a5 | 6527 | |
c2d936a4 BP |
6528 | if (error) { |
6529 | return error; | |
6530 | } | |
6531 | ||
6fd6ed71 | 6532 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
6533 | if (!ofpact_is_allowed_in_actions_set(a)) { |
6534 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
6535 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
6536 | } |
6537 | } | |
c2d936a4 BP |
6538 | |
6539 | return 0; | |
c2d967a5 | 6540 | } |
c2d936a4 BP |
6541 | \f |
6542 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 6543 | |
c2d936a4 BP |
6544 | struct instruction_type_info { |
6545 | enum ovs_instruction_type type; | |
6546 | const char *name; | |
6547 | }; | |
6548 | ||
6549 | static const struct instruction_type_info inst_info[] = { | |
6550 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
6551 | OVS_INSTRUCTIONS | |
6552 | #undef DEFINE_INST | |
6553 | }; | |
6554 | ||
6555 | const char * | |
6556 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 6557 | { |
c2d936a4 | 6558 | return inst_info[type].name; |
f25d0cf3 BP |
6559 | } |
6560 | ||
c2d936a4 BP |
6561 | int |
6562 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 6563 | { |
c2d936a4 BP |
6564 | const struct instruction_type_info *p; |
6565 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
6566 | if (!strcasecmp(name, p->name)) { | |
6567 | return p->type; | |
6568 | } | |
6569 | } | |
6570 | return -1; | |
29089a54 RL |
6571 | } |
6572 | ||
c2d936a4 BP |
6573 | enum ovs_instruction_type |
6574 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 6575 | { |
c2d936a4 BP |
6576 | switch (type) { |
6577 | case OFPACT_METER: | |
6578 | return OVSINST_OFPIT13_METER; | |
6579 | case OFPACT_CLEAR_ACTIONS: | |
6580 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
6581 | case OFPACT_WRITE_ACTIONS: | |
6582 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
6583 | case OFPACT_WRITE_METADATA: | |
6584 | return OVSINST_OFPIT11_WRITE_METADATA; | |
6585 | case OFPACT_GOTO_TABLE: | |
6586 | return OVSINST_OFPIT11_GOTO_TABLE; | |
6587 | case OFPACT_OUTPUT: | |
6588 | case OFPACT_GROUP: | |
7ae62a67 | 6589 | case OFPACT_CLONE: |
f25d0cf3 | 6590 | case OFPACT_CONTROLLER: |
c2d936a4 | 6591 | case OFPACT_ENQUEUE: |
f25d0cf3 | 6592 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 6593 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 6594 | case OFPACT_BUNDLE: |
c2d936a4 BP |
6595 | case OFPACT_SET_VLAN_VID: |
6596 | case OFPACT_SET_VLAN_PCP: | |
6597 | case OFPACT_STRIP_VLAN: | |
6598 | case OFPACT_PUSH_VLAN: | |
6599 | case OFPACT_SET_ETH_SRC: | |
6600 | case OFPACT_SET_ETH_DST: | |
6601 | case OFPACT_SET_IPV4_SRC: | |
6602 | case OFPACT_SET_IPV4_DST: | |
6603 | case OFPACT_SET_IP_DSCP: | |
6604 | case OFPACT_SET_IP_ECN: | |
6605 | case OFPACT_SET_IP_TTL: | |
6606 | case OFPACT_SET_L4_SRC_PORT: | |
6607 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 6608 | case OFPACT_REG_MOVE: |
c2d936a4 | 6609 | case OFPACT_SET_FIELD: |
bd85dac1 | 6610 | case OFPACT_STACK_PUSH: |
bd85dac1 | 6611 | case OFPACT_STACK_POP: |
f25d0cf3 | 6612 | case OFPACT_DEC_TTL: |
097d4939 | 6613 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 6614 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 6615 | case OFPACT_SET_MPLS_TTL: |
b676167a | 6616 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
6617 | case OFPACT_PUSH_MPLS: |
6618 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 6619 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
6620 | case OFPACT_SET_QUEUE: |
6621 | case OFPACT_POP_QUEUE: | |
6622 | case OFPACT_FIN_TIMEOUT: | |
6623 | case OFPACT_RESUBMIT: | |
6624 | case OFPACT_LEARN: | |
18080541 | 6625 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6626 | case OFPACT_MULTIPATH: |
6627 | case OFPACT_NOTE: | |
6628 | case OFPACT_EXIT: | |
e672ff9b | 6629 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 6630 | case OFPACT_SAMPLE: |
d4abaff5 | 6631 | case OFPACT_DEBUG_RECIRC: |
07659514 | 6632 | case OFPACT_CT: |
72fe7578 | 6633 | case OFPACT_CT_CLEAR: |
9ac0aada | 6634 | case OFPACT_NAT: |
c2d936a4 BP |
6635 | default: |
6636 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
6637 | } | |
6638 | } | |
6639 | ||
6640 | enum ofperr | |
6641 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
6642 | const uint16_t inst_type) | |
6643 | { | |
6644 | switch (inst_type) { | |
6645 | ||
6646 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
6647 | case ENUM: \ | |
6648 | *instruction_type = OVSINST_##ENUM; \ | |
6649 | return 0; | |
6650 | OVS_INSTRUCTIONS | |
6651 | #undef DEFINE_INST | |
6652 | ||
6653 | default: | |
6654 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
6655 | } | |
6656 | } | |
6657 | ||
6658 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
6659 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
6660 | struct ovsinst_map { | |
6661 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
6662 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
6663 | }; | |
6664 | ||
6665 | static const struct ovsinst_map * | |
6666 | get_ovsinst_map(enum ofp_version version) | |
6667 | { | |
6668 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
6669 | static const struct ovsinst_map of11[] = { | |
6670 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
6671 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
6672 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
6673 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
6674 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
6675 | { 0, -1 }, | |
6676 | }; | |
f25d0cf3 | 6677 | |
c2d936a4 BP |
6678 | /* OpenFlow 1.3+ instructions. */ |
6679 | static const struct ovsinst_map of13[] = { | |
6680 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
6681 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
6682 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
6683 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
6684 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
6685 | { OVSINST_OFPIT13_METER, 6 }, | |
6686 | { 0, -1 }, | |
6687 | }; | |
4cceacb9 | 6688 | |
c2d936a4 BP |
6689 | return version < OFP13_VERSION ? of11 : of13; |
6690 | } | |
f25d0cf3 | 6691 | |
c2d936a4 BP |
6692 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
6693 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
6694 | * (OFP11_VERSION or later), and returns the result. */ | |
6695 | ovs_be32 | |
6696 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
6697 | { | |
6698 | uint32_t ofpit_bitmap = 0; | |
6699 | const struct ovsinst_map *x; | |
f25d0cf3 | 6700 | |
c2d936a4 BP |
6701 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
6702 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
6703 | ofpit_bitmap |= 1u << x->ofpit; | |
6704 | } | |
6705 | } | |
6706 | return htonl(ofpit_bitmap); | |
6707 | } | |
f25d0cf3 | 6708 | |
c2d936a4 BP |
6709 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
6710 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
6711 | * correspond to OVSINST_* values, and returns the result. */ | |
6712 | uint32_t | |
6713 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
6714 | { | |
6715 | uint32_t ovsinst_bitmap = 0; | |
6716 | const struct ovsinst_map *x; | |
f25d0cf3 | 6717 | |
c2d936a4 BP |
6718 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
6719 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
6720 | ovsinst_bitmap |= 1u << x->ovsinst; | |
6721 | } | |
6722 | } | |
6723 | return ovsinst_bitmap; | |
6724 | } | |
f25d0cf3 | 6725 | |
c2d936a4 BP |
6726 | static inline struct ofp11_instruction * |
6727 | instruction_next(const struct ofp11_instruction *inst) | |
6728 | { | |
6729 | return ((struct ofp11_instruction *) (void *) | |
6730 | ((uint8_t *) inst + ntohs(inst->len))); | |
6731 | } | |
f25d0cf3 | 6732 | |
c2d936a4 BP |
6733 | static inline bool |
6734 | instruction_is_valid(const struct ofp11_instruction *inst, | |
6735 | size_t n_instructions) | |
6736 | { | |
6737 | uint16_t len = ntohs(inst->len); | |
6738 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
6739 | && len >= sizeof *inst | |
6740 | && len / sizeof *inst <= n_instructions); | |
6741 | } | |
f25d0cf3 | 6742 | |
c2d936a4 BP |
6743 | /* This macro is careful to check for instructions with bad lengths. */ |
6744 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
6745 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
6746 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
6747 | ((LEFT) -= (ntohs((ITER)->len) \ | |
6748 | / sizeof(struct ofp11_instruction)), \ | |
6749 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 6750 | |
c2d936a4 BP |
6751 | static enum ofperr |
6752 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
6753 | enum ovs_instruction_type *type) | |
6754 | { | |
6755 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 6756 | |
c2d936a4 BP |
6757 | switch (inst->type) { |
6758 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
6759 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 6760 | |
c2d936a4 BP |
6761 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
6762 | case CONSTANT_HTONS(ENUM): \ | |
6763 | if (EXTENSIBLE \ | |
6764 | ? len >= sizeof(struct STRUCT) \ | |
6765 | : len == sizeof(struct STRUCT)) { \ | |
6766 | *type = OVSINST_##ENUM; \ | |
6767 | return 0; \ | |
6768 | } else { \ | |
6769 | return OFPERR_OFPBIC_BAD_LEN; \ | |
6770 | } | |
6771 | OVS_INSTRUCTIONS | |
6772 | #undef DEFINE_INST | |
29089a54 | 6773 | |
c2d936a4 BP |
6774 | default: |
6775 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
6776 | } |
6777 | } | |
f25d0cf3 | 6778 | |
c2d936a4 BP |
6779 | static enum ofperr |
6780 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
6781 | size_t n_insts, | |
6782 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 6783 | { |
c2d936a4 BP |
6784 | const struct ofp11_instruction *inst; |
6785 | size_t left; | |
f25d0cf3 | 6786 | |
c2d936a4 BP |
6787 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
6788 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
6789 | enum ovs_instruction_type type; | |
6790 | enum ofperr error; | |
f25d0cf3 | 6791 | |
c2d936a4 BP |
6792 | error = decode_openflow11_instruction(inst, &type); |
6793 | if (error) { | |
6794 | return error; | |
6795 | } | |
f25d0cf3 | 6796 | |
c2d936a4 BP |
6797 | if (out[type]) { |
6798 | return OFPERR_OFPBIC_DUP_INST; | |
6799 | } | |
6800 | out[type] = inst; | |
6801 | } | |
6802 | ||
6803 | if (left) { | |
6804 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
6805 | (n_insts - left) * sizeof *inst); | |
6806 | return OFPERR_OFPBIC_BAD_LEN; | |
6807 | } | |
6808 | return 0; | |
f25d0cf3 BP |
6809 | } |
6810 | ||
6811 | static void | |
c2d936a4 BP |
6812 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
6813 | const struct ofp_action_header **actions, | |
6814 | size_t *actions_len) | |
f25d0cf3 | 6815 | { |
c2d936a4 BP |
6816 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
6817 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
6818 | } | |
f25d0cf3 | 6819 | |
c2d936a4 BP |
6820 | enum ofperr |
6821 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
6822 | unsigned int instructions_len, | |
6823 | enum ofp_version version, | |
6824 | struct ofpbuf *ofpacts) | |
6825 | { | |
6826 | const struct ofp11_instruction *instructions; | |
6827 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
6828 | enum ofperr error; | |
f25d0cf3 | 6829 | |
9abca1e5 | 6830 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
6831 | if (version == OFP10_VERSION) { |
6832 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
6833 | version, | |
6834 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
d824b5b7 | 6835 | ofpacts, 0); |
c2d936a4 | 6836 | } |
f25d0cf3 | 6837 | |
c2d936a4 BP |
6838 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
6839 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
6840 | "multiple of %d", | |
6841 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
6842 | error = OFPERR_OFPBIC_BAD_LEN; | |
6843 | goto exit; | |
6844 | } | |
f25d0cf3 | 6845 | |
c2d936a4 BP |
6846 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
6847 | if (instructions == NULL) { | |
6848 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
6849 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6850 | instructions_len, openflow->size); |
c2d936a4 BP |
6851 | error = OFPERR_OFPBIC_BAD_LEN; |
6852 | goto exit; | |
6853 | } | |
f25d0cf3 | 6854 | |
c2d936a4 BP |
6855 | error = decode_openflow11_instructions( |
6856 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
6857 | insts); | |
6858 | if (error) { | |
6859 | goto exit; | |
6860 | } | |
f25d0cf3 | 6861 | |
c2d936a4 BP |
6862 | if (insts[OVSINST_OFPIT13_METER]) { |
6863 | const struct ofp13_instruction_meter *oim; | |
6864 | struct ofpact_meter *om; | |
f25d0cf3 | 6865 | |
c2d936a4 BP |
6866 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
6867 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 6868 | |
c2d936a4 BP |
6869 | om = ofpact_put_METER(ofpacts); |
6870 | om->meter_id = ntohl(oim->meter_id); | |
6871 | } | |
6872 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
6873 | const struct ofp_action_header *actions; | |
6874 | size_t actions_len; | |
f25d0cf3 | 6875 | |
c2d936a4 BP |
6876 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
6877 | &actions, &actions_len); | |
6878 | error = ofpacts_decode(actions, actions_len, version, ofpacts); | |
6879 | if (error) { | |
6880 | goto exit; | |
6881 | } | |
6882 | } | |
6883 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
6884 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
6885 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
6886 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
6887 | } | |
6888 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
6889 | struct ofpact_nest *on; | |
6890 | const struct ofp_action_header *actions; | |
6891 | size_t actions_len; | |
2bd318de | 6892 | size_t start = ofpacts->size; |
255a54ea BP |
6893 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
6894 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
6895 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
6896 | &actions, &actions_len); | |
6897 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
6898 | version, ofpacts); | |
6899 | if (error) { | |
6900 | goto exit; | |
6901 | } | |
6902 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 6903 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
6904 | } |
6905 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
6906 | const struct ofp11_instruction_write_metadata *oiwm; | |
6907 | struct ofpact_metadata *om; | |
ca287d20 | 6908 | |
c2d936a4 BP |
6909 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
6910 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 6911 | |
c2d936a4 BP |
6912 | om = ofpact_put_WRITE_METADATA(ofpacts); |
6913 | om->metadata = oiwm->metadata; | |
6914 | om->mask = oiwm->metadata_mask; | |
6915 | } | |
6916 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
6917 | const struct ofp11_instruction_goto_table *oigt; | |
6918 | struct ofpact_goto_table *ogt; | |
7395c052 | 6919 | |
c2d936a4 BP |
6920 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
6921 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
6922 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
6923 | ogt->table_id = oigt->table_id; | |
6924 | } | |
e3f8f887 | 6925 | |
6fd6ed71 | 6926 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 6927 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
6928 | exit: |
6929 | if (error) { | |
6930 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 6931 | } |
c2d936a4 | 6932 | return error; |
f25d0cf3 | 6933 | } |
d01c980f | 6934 | |
c2d936a4 BP |
6935 | /* Update the length of the instruction that begins at offset 'ofs' within |
6936 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
6937 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 6938 | static void |
c2d936a4 | 6939 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 6940 | { |
c2d936a4 | 6941 | struct ofp11_instruction_actions *oia; |
d01c980f | 6942 | |
c2d936a4 | 6943 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
6944 | if (openflow->size > ofs + sizeof *oia) { |
6945 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 6946 | } else { |
6fd6ed71 | 6947 | openflow->size = ofs; |
c2d936a4 | 6948 | } |
d01c980f | 6949 | } |
c2d936a4 BP |
6950 | \f |
6951 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
6952 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
6953 | * valid, otherwise an OpenFlow error code. */ | |
6954 | enum ofperr | |
6955 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 6956 | { |
c2d936a4 BP |
6957 | switch (port) { |
6958 | case OFPP_IN_PORT: | |
6959 | case OFPP_TABLE: | |
6960 | case OFPP_NORMAL: | |
6961 | case OFPP_FLOOD: | |
6962 | case OFPP_ALL: | |
6963 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
6964 | case OFPP_LOCAL: |
6965 | return 0; | |
6966 | ||
13d2c689 BP |
6967 | case OFPP_NONE: |
6968 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
6969 | ||
c2d936a4 BP |
6970 | default: |
6971 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
6972 | return 0; | |
6973 | } | |
6974 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
6975 | } |
6976 | } | |
6977 | ||
c2d936a4 BP |
6978 | /* Removes the protocols that require consistency between match and actions |
6979 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
6980 | * | |
6981 | * (An example of an inconsistency between match and actions is a flow that | |
6982 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
6983 | * label.) */ | |
d01c980f | 6984 | static void |
c2d936a4 BP |
6985 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
6986 | { | |
6987 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
6988 | } | |
6989 | ||
6990 | /* May modify flow->dl_type, flow->nw_proto and flow->vlan_tci, | |
6991 | * caller must restore them. | |
6992 | * | |
6993 | * Modifies some actions, filling in fields that could not be properly set | |
6994 | * without context. */ | |
6995 | static enum ofperr | |
6996 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, | |
6997 | struct flow *flow, ofp_port_t max_ports, | |
6998 | uint8_t table_id, uint8_t n_tables) | |
d01c980f | 6999 | { |
c2d936a4 BP |
7000 | const struct ofpact_enqueue *enqueue; |
7001 | const struct mf_field *mf; | |
7002 | ||
d01c980f BP |
7003 | switch (a->type) { |
7004 | case OFPACT_OUTPUT: | |
c2d936a4 BP |
7005 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
7006 | max_ports); | |
7007 | ||
7008 | case OFPACT_CONTROLLER: | |
7009 | return 0; | |
d01c980f BP |
7010 | |
7011 | case OFPACT_ENQUEUE: | |
c2d936a4 BP |
7012 | enqueue = ofpact_get_ENQUEUE(a); |
7013 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) | |
7014 | && enqueue->port != OFPP_IN_PORT | |
7015 | && enqueue->port != OFPP_LOCAL) { | |
7016 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7017 | } | |
7018 | return 0; | |
7019 | ||
7020 | case OFPACT_OUTPUT_REG: | |
7021 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
7022 | ||
aaca4fe0 WT |
7023 | case OFPACT_OUTPUT_TRUNC: |
7024 | return ofpact_check_output_port(ofpact_get_OUTPUT_TRUNC(a)->port, | |
7025 | max_ports); | |
7026 | ||
c2d936a4 BP |
7027 | case OFPACT_BUNDLE: |
7028 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
d01c980f BP |
7029 | |
7030 | case OFPACT_SET_VLAN_VID: | |
c2d936a4 BP |
7031 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7032 | * OpenFlow 1.1+ if need be. */ | |
7033 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
7034 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
7035 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
7036 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
7037 | inconsistent_match(usable_protocols); | |
7038 | } | |
7039 | /* Temporary mark that we have a vlan tag. */ | |
7040 | flow->vlan_tci |= htons(VLAN_CFI); | |
7041 | return 0; | |
d01c980f BP |
7042 | |
7043 | case OFPACT_SET_VLAN_PCP: | |
c2d936a4 BP |
7044 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7045 | * OpenFlow 1.1+ if need be. */ | |
7046 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
7047 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
7048 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
7049 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
7050 | inconsistent_match(usable_protocols); | |
7051 | } | |
7052 | /* Temporary mark that we have a vlan tag. */ | |
7053 | flow->vlan_tci |= htons(VLAN_CFI); | |
7054 | return 0; | |
d01c980f BP |
7055 | |
7056 | case OFPACT_STRIP_VLAN: | |
c2d936a4 BP |
7057 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { |
7058 | inconsistent_match(usable_protocols); | |
7059 | } | |
7060 | /* Temporary mark that we have no vlan tag. */ | |
7061 | flow->vlan_tci = htons(0); | |
7062 | return 0; | |
d01c980f | 7063 | |
3e34fbdd | 7064 | case OFPACT_PUSH_VLAN: |
c2d936a4 BP |
7065 | if (flow->vlan_tci & htons(VLAN_CFI)) { |
7066 | /* Multiple VLAN headers not supported. */ | |
7067 | return OFPERR_OFPBAC_BAD_TAG; | |
7068 | } | |
7069 | /* Temporary mark that we have a vlan tag. */ | |
7070 | flow->vlan_tci |= htons(VLAN_CFI); | |
7071 | return 0; | |
276c4e7a | 7072 | |
d01c980f | 7073 | case OFPACT_SET_ETH_SRC: |
d01c980f | 7074 | case OFPACT_SET_ETH_DST: |
c2d936a4 | 7075 | return 0; |
d01c980f BP |
7076 | |
7077 | case OFPACT_SET_IPV4_SRC: | |
d01c980f | 7078 | case OFPACT_SET_IPV4_DST: |
c2d936a4 BP |
7079 | if (flow->dl_type != htons(ETH_TYPE_IP)) { |
7080 | inconsistent_match(usable_protocols); | |
7081 | } | |
7082 | return 0; | |
d01c980f | 7083 | |
04f01c24 | 7084 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7085 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7086 | case OFPACT_SET_IP_TTL: |
7bcb1506 | 7087 | case OFPACT_DEC_TTL: |
c2d936a4 BP |
7088 | if (!is_ip_any(flow)) { |
7089 | inconsistent_match(usable_protocols); | |
7090 | } | |
7091 | return 0; | |
b02475c5 | 7092 | |
c2d936a4 | 7093 | case OFPACT_SET_L4_SRC_PORT: |
c2d936a4 | 7094 | case OFPACT_SET_L4_DST_PORT: |
b8778a0d | 7095 | if (!is_ip_any(flow) || (flow->nw_frag & FLOW_NW_FRAG_LATER) || |
c2d936a4 BP |
7096 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP |
7097 | && flow->nw_proto != IPPROTO_SCTP)) { | |
7098 | inconsistent_match(usable_protocols); | |
7099 | } | |
7100 | /* Note on which transport protocol the port numbers are set. | |
7101 | * This allows this set action to be converted to an OF1.2 set field | |
7102 | * action. */ | |
b8778a0d JR |
7103 | if (a->type == OFPACT_SET_L4_SRC_PORT) { |
7104 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7105 | } else { | |
7106 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7107 | } | |
c2d936a4 | 7108 | return 0; |
b02475c5 | 7109 | |
c2d936a4 BP |
7110 | case OFPACT_REG_MOVE: |
7111 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
8dd54666 | 7112 | |
e3f8f887 | 7113 | case OFPACT_SET_FIELD: |
c2d936a4 BP |
7114 | mf = ofpact_get_SET_FIELD(a)->field; |
7115 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
aff49b8c | 7116 | if (!mf_are_prereqs_ok(mf, flow, NULL) || |
c2d936a4 BP |
7117 | (mf->id == MFF_VLAN_VID && !(flow->vlan_tci & htons(VLAN_CFI)))) { |
7118 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisities", | |
7119 | mf->name); | |
7120 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7121 | } | |
7122 | /* Remember if we saw a vlan tag in the flow to aid translating to | |
7123 | * OpenFlow 1.1 if need be. */ | |
7124 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
7125 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
7126 | if (mf->id == MFF_VLAN_TCI) { | |
7127 | /* The set field may add or remove the vlan tag, | |
7128 | * Mark the status temporarily. */ | |
128684a6 | 7129 | flow->vlan_tci = ofpact_get_SET_FIELD(a)->value->be16; |
c2d936a4 BP |
7130 | } |
7131 | return 0; | |
e3f8f887 | 7132 | |
bd85dac1 | 7133 | case OFPACT_STACK_PUSH: |
c2d936a4 BP |
7134 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow); |
7135 | ||
bd85dac1 | 7136 | case OFPACT_STACK_POP: |
c2d936a4 BP |
7137 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), flow); |
7138 | ||
7139 | case OFPACT_SET_MPLS_LABEL: | |
7140 | case OFPACT_SET_MPLS_TC: | |
7141 | case OFPACT_SET_MPLS_TTL: | |
7142 | case OFPACT_DEC_MPLS_TTL: | |
7143 | if (!eth_type_mpls(flow->dl_type)) { | |
7144 | inconsistent_match(usable_protocols); | |
7145 | } | |
7146 | return 0; | |
7147 | ||
d01c980f | 7148 | case OFPACT_SET_TUNNEL: |
c2d936a4 | 7149 | case OFPACT_SET_QUEUE: |
d01c980f | 7150 | case OFPACT_POP_QUEUE: |
d01c980f | 7151 | case OFPACT_RESUBMIT: |
c2d936a4 BP |
7152 | return 0; |
7153 | ||
7154 | case OFPACT_FIN_TIMEOUT: | |
7155 | if (flow->nw_proto != IPPROTO_TCP) { | |
7156 | inconsistent_match(usable_protocols); | |
7157 | } | |
7158 | return 0; | |
7159 | ||
d01c980f | 7160 | case OFPACT_LEARN: |
c2d936a4 BP |
7161 | return learn_check(ofpact_get_LEARN(a), flow); |
7162 | ||
18080541 BP |
7163 | case OFPACT_CONJUNCTION: |
7164 | return 0; | |
7165 | ||
d01c980f | 7166 | case OFPACT_MULTIPATH: |
c2d936a4 BP |
7167 | return multipath_check(ofpact_get_MULTIPATH(a), flow); |
7168 | ||
d01c980f BP |
7169 | case OFPACT_NOTE: |
7170 | case OFPACT_EXIT: | |
c2d936a4 | 7171 | return 0; |
d01c980f | 7172 | |
c2d936a4 BP |
7173 | case OFPACT_PUSH_MPLS: |
7174 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; | |
7175 | /* The packet is now MPLS and the MPLS payload is opaque. | |
7176 | * Thus nothing can be assumed about the network protocol. | |
7177 | * Temporarily mark that we have no nw_proto. */ | |
7178 | flow->nw_proto = 0; | |
7179 | return 0; | |
1e7db674 | 7180 | |
c2d936a4 BP |
7181 | case OFPACT_POP_MPLS: |
7182 | if (!eth_type_mpls(flow->dl_type)) { | |
7183 | inconsistent_match(usable_protocols); | |
7184 | } | |
7185 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
7186 | return 0; | |
1e7db674 | 7187 | |
c2d936a4 BP |
7188 | case OFPACT_SAMPLE: |
7189 | return 0; | |
1e7db674 | 7190 | |
7ae62a67 WT |
7191 | case OFPACT_CLONE: { |
7192 | struct ofpact_nest *on = ofpact_get_CLONE(a); | |
7193 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
7194 | flow, max_ports, table_id, n_tables, | |
7195 | usable_protocols); | |
7196 | } | |
7197 | ||
07659514 JS |
7198 | case OFPACT_CT: { |
7199 | struct ofpact_conntrack *oc = ofpact_get_CT(a); | |
7200 | ||
7201 | if (!dl_type_is_ip_any(flow->dl_type) | |
8b6d097c | 7202 | || (flow->ct_state & CS_INVALID && oc->flags & NX_CT_F_COMMIT) |
40c7b2fc JS |
7203 | || (oc->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) |
7204 | || (oc->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
ed26e3ea JR |
7205 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions |
7206 | * be silently discarded. Instead, datapath flow install fails, so | |
7207 | * it is better to flag inconsistent CT actions as hard errors. */ | |
7208 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
07659514 JS |
7209 | } |
7210 | ||
7211 | if (oc->zone_src.field) { | |
7212 | return mf_check_src(&oc->zone_src, flow); | |
7213 | } | |
8e53fe8c | 7214 | |
9f02d70c JR |
7215 | return ofpacts_check(oc->actions, ofpact_ct_get_action_len(oc), |
7216 | flow, max_ports, table_id, n_tables, | |
7217 | usable_protocols); | |
07659514 JS |
7218 | } |
7219 | ||
72fe7578 BP |
7220 | case OFPACT_CT_CLEAR: |
7221 | return 0; | |
7222 | ||
9ac0aada JR |
7223 | case OFPACT_NAT: { |
7224 | struct ofpact_nat *on = ofpact_get_NAT(a); | |
7225 | ||
7226 | if (!dl_type_is_ip_any(flow->dl_type) || | |
7227 | (on->range_af == AF_INET && flow->dl_type != htons(ETH_TYPE_IP)) || | |
7228 | (on->range_af == AF_INET6 | |
7229 | && flow->dl_type != htons(ETH_TYPE_IPV6))) { | |
ed26e3ea | 7230 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
9ac0aada JR |
7231 | } |
7232 | return 0; | |
7233 | } | |
7234 | ||
c2d936a4 BP |
7235 | case OFPACT_CLEAR_ACTIONS: |
7236 | return 0; | |
1e7db674 | 7237 | |
c2d936a4 BP |
7238 | case OFPACT_WRITE_ACTIONS: { |
7239 | /* Use a temporary copy of 'usable_protocols' because we can't check | |
7240 | * consistency of an action set. */ | |
7241 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
7242 | enum ofputil_protocol p = *usable_protocols; | |
7243 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
7244 | flow, max_ports, table_id, n_tables, &p); | |
7245 | } | |
1e7db674 | 7246 | |
c2d936a4 BP |
7247 | case OFPACT_WRITE_METADATA: |
7248 | return 0; | |
1e7db674 | 7249 | |
c2d936a4 BP |
7250 | case OFPACT_METER: { |
7251 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
7252 | if (mid == 0 || mid > OFPM13_MAX) { | |
7253 | return OFPERR_OFPMMFC_INVALID_METER; | |
7254 | } | |
7255 | return 0; | |
7256 | } | |
1e7db674 | 7257 | |
c2d936a4 BP |
7258 | case OFPACT_GOTO_TABLE: { |
7259 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
7260 | if ((table_id != 255 && goto_table <= table_id) | |
7261 | || (n_tables != 255 && goto_table >= n_tables)) { | |
8c87971e | 7262 | return OFPERR_OFPBIC_BAD_TABLE_ID; |
c2d936a4 BP |
7263 | } |
7264 | return 0; | |
7265 | } | |
1e7db674 | 7266 | |
c2d936a4 BP |
7267 | case OFPACT_GROUP: |
7268 | return 0; | |
1e7db674 | 7269 | |
e672ff9b JR |
7270 | case OFPACT_UNROLL_XLATE: |
7271 | /* UNROLL is an internal action that should never be seen via | |
7272 | * OpenFlow. */ | |
7273 | return OFPERR_OFPBAC_BAD_TYPE; | |
7274 | ||
d4abaff5 BP |
7275 | case OFPACT_DEBUG_RECIRC: |
7276 | return 0; | |
7277 | ||
c2d936a4 BP |
7278 | default: |
7279 | OVS_NOT_REACHED(); | |
7280 | } | |
7281 | } | |
1e7db674 | 7282 | |
c2d936a4 BP |
7283 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
7284 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
7285 | * switch with no more than 'max_ports' ports. | |
7286 | * | |
7287 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
7288 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
7289 | * example of an inconsistency between match and actions is a flow that does | |
7290 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
7291 | * | |
7292 | * May annotate ofpacts with information gathered from the 'flow'. | |
7293 | * | |
7294 | * May temporarily modify 'flow', but restores the changes before returning. */ | |
7295 | enum ofperr | |
7296 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
7297 | struct flow *flow, ofp_port_t max_ports, | |
7298 | uint8_t table_id, uint8_t n_tables, | |
7299 | enum ofputil_protocol *usable_protocols) | |
7300 | { | |
7301 | struct ofpact *a; | |
7302 | ovs_be16 dl_type = flow->dl_type; | |
7303 | ovs_be16 vlan_tci = flow->vlan_tci; | |
7304 | uint8_t nw_proto = flow->nw_proto; | |
7305 | enum ofperr error = 0; | |
1e7db674 | 7306 | |
c2d936a4 BP |
7307 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7308 | error = ofpact_check__(usable_protocols, a, flow, | |
7309 | max_ports, table_id, n_tables); | |
7310 | if (error) { | |
1e7db674 | 7311 | break; |
c2d936a4 BP |
7312 | } |
7313 | } | |
7314 | /* Restore fields that may have been modified. */ | |
7315 | flow->dl_type = dl_type; | |
7316 | flow->vlan_tci = vlan_tci; | |
7317 | flow->nw_proto = nw_proto; | |
7318 | return error; | |
7319 | } | |
1e7db674 | 7320 | |
c2d936a4 BP |
7321 | /* Like ofpacts_check(), but reports inconsistencies as |
7322 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
7323 | enum ofperr | |
7324 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
7325 | struct flow *flow, ofp_port_t max_ports, | |
7326 | uint8_t table_id, uint8_t n_tables, | |
7327 | enum ofputil_protocol usable_protocols) | |
7328 | { | |
7329 | enum ofputil_protocol p = usable_protocols; | |
7330 | enum ofperr error; | |
1e7db674 | 7331 | |
c2d936a4 BP |
7332 | error = ofpacts_check(ofpacts, ofpacts_len, flow, max_ports, |
7333 | table_id, n_tables, &p); | |
7334 | return (error ? error | |
7335 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
7336 | : 0); | |
7337 | } | |
097d4939 | 7338 | |
28f5311f JS |
7339 | /* Returns the destination field that 'ofpact' would write to, or NULL |
7340 | * if the action would not write to an mf_field. */ | |
7341 | const struct mf_field * | |
7342 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 7343 | { |
28f5311f JS |
7344 | if (ofpact->type == OFPACT_SET_FIELD) { |
7345 | const struct ofpact_set_field *orl; | |
8e53fe8c | 7346 | |
28f5311f | 7347 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 7348 | return orl->field; |
28f5311f JS |
7349 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
7350 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 7351 | |
28f5311f | 7352 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
7353 | return orm->dst.field; |
7354 | } | |
7355 | ||
7356 | return NULL; | |
7357 | } | |
7358 | ||
7359 | static enum ofperr | |
7360 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
7361 | { | |
7362 | VLOG_WARN("%s action doesn't support nested action %s", | |
7363 | ofpact_name(outer_action), ofpact_name(action)); | |
7364 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7365 | } | |
7366 | ||
7367 | static bool | |
7368 | field_requires_ct(enum mf_field_id field) | |
7369 | { | |
9daf2348 | 7370 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
7371 | } |
7372 | ||
7373 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
7374 | static enum ofperr |
7375 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
7376 | { | |
28f5311f | 7377 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
7378 | |
7379 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
7380 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
7381 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7382 | } | |
9ac0aada JR |
7383 | if (a->type == OFPACT_NAT) { |
7384 | if (outer_action != OFPACT_CT) { | |
7385 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
7386 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7387 | } | |
7388 | return 0; | |
7389 | } | |
8e53fe8c JS |
7390 | |
7391 | if (outer_action) { | |
7392 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
7393 | || outer_action == OFPACT_CT); | |
7394 | ||
7395 | if (outer_action == OFPACT_CT) { | |
7396 | if (!field) { | |
7397 | return unsupported_nesting(a->type, outer_action); | |
7398 | } else if (!field_requires_ct(field->id)) { | |
7399 | VLOG_WARN("%s action doesn't support nested modification " | |
7400 | "of %s", ofpact_name(outer_action), field->name); | |
7401 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7402 | } | |
7403 | } | |
d824b5b7 JS |
7404 | } |
7405 | ||
7406 | return 0; | |
7407 | } | |
7408 | ||
18080541 BP |
7409 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
7410 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
7411 | * vSwitch. | |
7412 | * | |
7413 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
7414 | * instructions that are allowed within 'ofpacts[]'. |
7415 | * | |
7416 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
7417 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
7418 | static enum ofperr |
7419 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 7420 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
7421 | { |
7422 | const struct ofpact *a; | |
7423 | enum ovs_instruction_type inst; | |
097d4939 | 7424 | |
c2d936a4 BP |
7425 | inst = OVSINST_OFPIT13_METER; |
7426 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
7427 | enum ovs_instruction_type next; | |
8e53fe8c | 7428 | enum ofperr error; |
1e7db674 | 7429 | |
18080541 BP |
7430 | if (a->type == OFPACT_CONJUNCTION) { |
7431 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
7432 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
7433 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
7434 | "\"note\" but not any other kind of action " | |
7435 | "(such as the \"%s\" action used here)", | |
96775a1c | 7436 | ofpact_name(a->type)); |
18080541 BP |
7437 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
7438 | } | |
7439 | } | |
7440 | return 0; | |
7441 | } | |
7442 | ||
8e53fe8c JS |
7443 | error = ofpacts_verify_nested(a, outer_action); |
7444 | if (error) { | |
7445 | return error; | |
d824b5b7 JS |
7446 | } |
7447 | ||
c2d936a4 BP |
7448 | next = ovs_instruction_type_from_ofpact_type(a->type); |
7449 | if (a > ofpacts | |
7450 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
7451 | ? next < inst | |
7452 | : next <= inst)) { | |
7453 | const char *name = ovs_instruction_name_from_type(inst); | |
7454 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 7455 | |
c2d936a4 BP |
7456 | if (next == inst) { |
7457 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
7458 | "1.1+ compatibility", name); | |
7459 | } else { | |
7460 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
7461 | "before %s, for OpenFlow 1.1+ compatibility", | |
7462 | next_name, name); | |
7463 | } | |
7464 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
7465 | } | |
7466 | if (!((1u << next) & allowed_ovsinsts)) { | |
7467 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 7468 | |
c2d936a4 BP |
7469 | VLOG_WARN("%s instruction not allowed here", name); |
7470 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 7471 | } |
c2d936a4 BP |
7472 | |
7473 | inst = next; | |
7474 | } | |
7475 | ||
7476 | return 0; | |
7477 | } | |
7478 | \f | |
7479 | /* Converting ofpacts to OpenFlow. */ | |
7480 | ||
7481 | static void | |
7482 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
7483 | struct ofpbuf *out) | |
7484 | { | |
7485 | switch (a->type) { | |
7486 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7487 | case OFPACT_##ENUM: \ | |
355ead69 GS |
7488 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
7489 | return; | |
c2d936a4 BP |
7490 | OFPACTS |
7491 | #undef OFPACT | |
7492 | default: | |
7493 | OVS_NOT_REACHED(); | |
1e7db674 | 7494 | } |
e3f8f887 JR |
7495 | } |
7496 | ||
7497 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
7498 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 7499 | * 'openflow'. */ |
a07c15bc | 7500 | size_t |
e3f8f887 JR |
7501 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
7502 | struct ofpbuf *openflow, | |
7503 | enum ofp_version ofp_version) | |
d01c980f BP |
7504 | { |
7505 | const struct ofpact *a; | |
6fd6ed71 | 7506 | size_t start_size = openflow->size; |
d01c980f BP |
7507 | |
7508 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 7509 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 7510 | } |
6fd6ed71 | 7511 | return openflow->size - start_size; |
d01c980f BP |
7512 | } |
7513 | ||
c2d936a4 BP |
7514 | static enum ovs_instruction_type |
7515 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 7516 | { |
c2d936a4 BP |
7517 | return (ovs_instruction_type_from_ofpact_type(a->type) |
7518 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 7519 | } |
8dd54666 IY |
7520 | |
7521 | void | |
e3f8f887 JR |
7522 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
7523 | size_t ofpacts_len, | |
7524 | struct ofpbuf *openflow, | |
7525 | enum ofp_version ofp_version) | |
8dd54666 | 7526 | { |
c2d936a4 | 7527 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
7528 | const struct ofpact *a; |
7529 | ||
8f2cded4 BP |
7530 | if (ofp_version == OFP10_VERSION) { |
7531 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
7532 | ofp_version); | |
7533 | return; | |
7534 | } | |
e3f8f887 | 7535 | |
c2d936a4 BP |
7536 | a = ofpacts; |
7537 | while (a < end) { | |
7538 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 7539 | size_t ofs = openflow->size; |
8dd54666 IY |
7540 | |
7541 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
7542 | do { |
7543 | encode_ofpact(a, ofp_version, openflow); | |
7544 | a = ofpact_next(a); | |
7545 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 7546 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
7547 | } else { |
7548 | encode_ofpact(a, ofp_version, openflow); | |
7549 | a = ofpact_next(a); | |
8dd54666 IY |
7550 | } |
7551 | } | |
7552 | } | |
d01c980f | 7553 | \f |
08d1e234 BP |
7554 | /* Sets of supported actions. */ |
7555 | ||
7556 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
7557 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
7558 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
7559 | * instance is specific to one OpenFlow version.) */ | |
7560 | struct ofpact_map { | |
7561 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
7562 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
7563 | }; | |
7564 | ||
7565 | static const struct ofpact_map * | |
7566 | get_ofpact_map(enum ofp_version version) | |
7567 | { | |
7568 | /* OpenFlow 1.0 actions. */ | |
7569 | static const struct ofpact_map of10[] = { | |
7570 | { OFPACT_OUTPUT, 0 }, | |
7571 | { OFPACT_SET_VLAN_VID, 1 }, | |
7572 | { OFPACT_SET_VLAN_PCP, 2 }, | |
7573 | { OFPACT_STRIP_VLAN, 3 }, | |
7574 | { OFPACT_SET_ETH_SRC, 4 }, | |
7575 | { OFPACT_SET_ETH_DST, 5 }, | |
7576 | { OFPACT_SET_IPV4_SRC, 6 }, | |
7577 | { OFPACT_SET_IPV4_DST, 7 }, | |
7578 | { OFPACT_SET_IP_DSCP, 8 }, | |
7579 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
7580 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
7581 | { OFPACT_ENQUEUE, 11 }, | |
7582 | { 0, -1 }, | |
7583 | }; | |
7584 | ||
7585 | /* OpenFlow 1.1 actions. */ | |
7586 | static const struct ofpact_map of11[] = { | |
7587 | { OFPACT_OUTPUT, 0 }, | |
7588 | { OFPACT_SET_VLAN_VID, 1 }, | |
7589 | { OFPACT_SET_VLAN_PCP, 2 }, | |
7590 | { OFPACT_SET_ETH_SRC, 3 }, | |
7591 | { OFPACT_SET_ETH_DST, 4 }, | |
7592 | { OFPACT_SET_IPV4_SRC, 5 }, | |
7593 | { OFPACT_SET_IPV4_DST, 6 }, | |
7594 | { OFPACT_SET_IP_DSCP, 7 }, | |
7595 | { OFPACT_SET_IP_ECN, 8 }, | |
7596 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
7597 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
7598 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
7599 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
7600 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
7601 | { OFPACT_SET_MPLS_TC, 14 }, | |
7602 | { OFPACT_SET_MPLS_TTL, 15 }, | |
7603 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
7604 | { OFPACT_PUSH_VLAN, 17 }, | |
7605 | { OFPACT_STRIP_VLAN, 18 }, | |
7606 | { OFPACT_PUSH_MPLS, 19 }, | |
7607 | { OFPACT_POP_MPLS, 20 }, | |
7608 | { OFPACT_SET_QUEUE, 21 }, | |
7609 | { OFPACT_GROUP, 22 }, | |
7610 | { OFPACT_SET_IP_TTL, 23 }, | |
7611 | { OFPACT_DEC_TTL, 24 }, | |
7612 | { 0, -1 }, | |
7613 | }; | |
7614 | ||
7615 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
7616 | static const struct ofpact_map of12[] = { | |
7617 | { OFPACT_OUTPUT, 0 }, | |
7618 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
7619 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
7620 | { OFPACT_SET_MPLS_TTL, 15 }, | |
7621 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
7622 | { OFPACT_PUSH_VLAN, 17 }, | |
7623 | { OFPACT_STRIP_VLAN, 18 }, | |
7624 | { OFPACT_PUSH_MPLS, 19 }, | |
7625 | { OFPACT_POP_MPLS, 20 }, | |
7626 | { OFPACT_SET_QUEUE, 21 }, | |
7627 | { OFPACT_GROUP, 22 }, | |
7628 | { OFPACT_SET_IP_TTL, 23 }, | |
7629 | { OFPACT_DEC_TTL, 24 }, | |
7630 | { OFPACT_SET_FIELD, 25 }, | |
7631 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
7632 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
7633 | { 0, -1 }, | |
7634 | }; | |
7635 | ||
7636 | switch (version) { | |
7637 | case OFP10_VERSION: | |
7638 | return of10; | |
7639 | ||
7640 | case OFP11_VERSION: | |
7641 | return of11; | |
7642 | ||
7643 | case OFP12_VERSION: | |
7644 | case OFP13_VERSION: | |
7645 | case OFP14_VERSION: | |
7646 | case OFP15_VERSION: | |
b79d45a1 | 7647 | case OFP16_VERSION: |
08d1e234 BP |
7648 | default: |
7649 | return of12; | |
7650 | } | |
7651 | } | |
7652 | ||
7653 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
7654 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
7655 | * returns the result. */ | |
7656 | ovs_be32 | |
7657 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
7658 | { | |
7659 | uint32_t openflow_bitmap = 0; | |
7660 | const struct ofpact_map *x; | |
7661 | ||
7662 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
7663 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
7664 | openflow_bitmap |= 1u << x->ofpat; | |
7665 | } | |
7666 | } | |
7667 | return htonl(openflow_bitmap); | |
7668 | } | |
7669 | ||
7670 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
7671 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
7672 | * and returns the result. */ | |
7673 | uint64_t | |
7674 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
7675 | { | |
7676 | uint64_t ofpact_bitmap = 0; | |
7677 | const struct ofpact_map *x; | |
7678 | ||
7679 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
7680 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
7681 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
7682 | } | |
7683 | } | |
7684 | return ofpact_bitmap; | |
7685 | } | |
7686 | ||
7687 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
7688 | * by 'ofpacts_bitmap'. */ | |
7689 | void | |
7690 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
7691 | { | |
7692 | if (!ofpacts_bitmap) { | |
7693 | ds_put_cstr(s, "<none>"); | |
7694 | } else { | |
7695 | while (ofpacts_bitmap) { | |
7696 | ds_put_format(s, "%s ", | |
7697 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
7698 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
7699 | } | |
7700 | ds_chomp(s, ' '); | |
7701 | } | |
7702 | } | |
7703 | \f | |
f25d0cf3 BP |
7704 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
7705 | static bool | |
4e022ec0 | 7706 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
7707 | { |
7708 | switch (ofpact->type) { | |
7709 | case OFPACT_OUTPUT: | |
7710 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
7711 | case OFPACT_ENQUEUE: | |
7712 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
7713 | case OFPACT_CONTROLLER: | |
7714 | return port == OFPP_CONTROLLER; | |
7715 | ||
7716 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 7717 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
7718 | case OFPACT_BUNDLE: |
7719 | case OFPACT_SET_VLAN_VID: | |
7720 | case OFPACT_SET_VLAN_PCP: | |
7721 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 7722 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
7723 | case OFPACT_SET_ETH_SRC: |
7724 | case OFPACT_SET_ETH_DST: | |
7725 | case OFPACT_SET_IPV4_SRC: | |
7726 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 7727 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7728 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7729 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
7730 | case OFPACT_SET_L4_SRC_PORT: |
7731 | case OFPACT_SET_L4_DST_PORT: | |
7732 | case OFPACT_REG_MOVE: | |
b2dd70be | 7733 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
7734 | case OFPACT_STACK_PUSH: |
7735 | case OFPACT_STACK_POP: | |
f25d0cf3 | 7736 | case OFPACT_DEC_TTL: |
097d4939 JR |
7737 | case OFPACT_SET_MPLS_LABEL: |
7738 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 7739 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7740 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 7741 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 7742 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
7743 | case OFPACT_SET_QUEUE: |
7744 | case OFPACT_POP_QUEUE: | |
7745 | case OFPACT_FIN_TIMEOUT: | |
7746 | case OFPACT_RESUBMIT: | |
7747 | case OFPACT_LEARN: | |
18080541 | 7748 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 7749 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
7750 | case OFPACT_NOTE: |
7751 | case OFPACT_EXIT: | |
e672ff9b | 7752 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
7753 | case OFPACT_PUSH_MPLS: |
7754 | case OFPACT_POP_MPLS: | |
29089a54 | 7755 | case OFPACT_SAMPLE: |
b19e8793 | 7756 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 7757 | case OFPACT_CLONE: |
7fdb60a7 | 7758 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 7759 | case OFPACT_GOTO_TABLE: |
638a19b0 | 7760 | case OFPACT_METER: |
7395c052 | 7761 | case OFPACT_GROUP: |
d4abaff5 | 7762 | case OFPACT_DEBUG_RECIRC: |
07659514 | 7763 | case OFPACT_CT: |
72fe7578 | 7764 | case OFPACT_CT_CLEAR: |
9ac0aada | 7765 | case OFPACT_NAT: |
f25d0cf3 BP |
7766 | default: |
7767 | return false; | |
7768 | } | |
7769 | } | |
7770 | ||
7771 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
7772 | * to 'port', false otherwise. */ | |
7773 | bool | |
7774 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 7775 | ofp_port_t port) |
c2d936a4 BP |
7776 | { |
7777 | const struct ofpact *a; | |
f25d0cf3 | 7778 | |
4f20179d | 7779 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
7780 | if (ofpact_outputs_to_port(a, port)) { |
7781 | return true; | |
7782 | } | |
7783 | } | |
f25d0cf3 | 7784 | |
c2d936a4 BP |
7785 | return false; |
7786 | } | |
f25d0cf3 | 7787 | |
c2d936a4 BP |
7788 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
7789 | * to 'group', false otherwise. */ | |
7790 | bool | |
7791 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
7792 | uint32_t group_id) | |
7793 | { | |
7794 | const struct ofpact *a; | |
b02475c5 | 7795 | |
4f20179d | 7796 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
7797 | if (a->type == OFPACT_GROUP |
7798 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
7799 | return true; | |
7800 | } | |
7801 | } | |
b02475c5 | 7802 | |
c2d936a4 BP |
7803 | return false; |
7804 | } | |
8dd54666 | 7805 | |
c2d936a4 BP |
7806 | bool |
7807 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
7808 | const struct ofpact *b, size_t b_len) | |
7809 | { | |
7810 | return a_len == b_len && !memcmp(a, b, a_len); | |
7811 | } | |
29089a54 | 7812 | |
c2d936a4 BP |
7813 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
7814 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
7815 | * | |
7816 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
7817 | * ofpacts_verify()). */ | |
7818 | uint32_t | |
7819 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
7820 | { | |
7821 | const struct ofpact *a; | |
7fdb60a7 | 7822 | |
c2d936a4 BP |
7823 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7824 | enum ovs_instruction_type inst; | |
b19e8793 | 7825 | |
c2d936a4 BP |
7826 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
7827 | if (a->type == OFPACT_METER) { | |
7828 | return ofpact_get_METER(a)->meter_id; | |
7829 | } else if (inst > OVSINST_OFPIT13_METER) { | |
7830 | break; | |
4cceacb9 | 7831 | } |
c2d936a4 | 7832 | } |
638a19b0 | 7833 | |
c2d936a4 BP |
7834 | return 0; |
7835 | } | |
7836 | \f | |
7837 | /* Formatting ofpacts. */ | |
7395c052 | 7838 | |
c2d936a4 BP |
7839 | static void |
7840 | ofpact_format(const struct ofpact *a, struct ds *s) | |
7841 | { | |
7842 | switch (a->type) { | |
7843 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7844 | case OFPACT_##ENUM: \ | |
7845 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), s); \ | |
7846 | break; | |
7847 | OFPACTS | |
7848 | #undef OFPACT | |
7849 | default: | |
7850 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
7851 | } |
7852 | } | |
7853 | ||
7854 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
7855 | * 'ofpacts' to 'string'. */ | |
7856 | void | |
7857 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
7858 | struct ds *string) | |
7859 | { | |
f25d0cf3 | 7860 | if (!ofpacts_len) { |
b1c5bf1f | 7861 | ds_put_format(string, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
7862 | } else { |
7863 | const struct ofpact *a; | |
7864 | ||
7865 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
7866 | if (a != ofpacts) { | |
b1c5bf1f | 7867 | ds_put_char(string, ','); |
f25d0cf3 | 7868 | } |
8dd54666 | 7869 | |
f25d0cf3 BP |
7870 | ofpact_format(a, string); |
7871 | } | |
7872 | } | |
7873 | } | |
7874 | \f | |
7875 | /* Internal use by helpers. */ | |
7876 | ||
ce058104 | 7877 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
7878 | void * |
7879 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
7880 | { | |
7881 | struct ofpact *ofpact; | |
7882 | ||
6fd6ed71 PS |
7883 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
7884 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
7885 | ofpact_init(ofpact, type, len); |
7886 | return ofpact; | |
7887 | } | |
7888 | ||
ce058104 | 7889 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
7890 | void |
7891 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
7892 | { | |
7893 | memset(ofpact, 0, len); | |
7894 | ofpact->type = type; | |
c2d936a4 | 7895 | ofpact->raw = -1; |
f25d0cf3 BP |
7896 | ofpact->len = len; |
7897 | } | |
ce058104 BP |
7898 | |
7899 | /* Implementation of ofpact_finish_<ENUM>(). | |
7900 | * | |
7901 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
7902 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
7903 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
7904 | * the end of ofp-actions.h for more information. |
7905 | * | |
7906 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
7907 | * pointer to the return value of this function. */ | |
7908 | void * | |
34abaa3d | 7909 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 7910 | { |
5308056f JS |
7911 | ptrdiff_t len; |
7912 | ||
6fd6ed71 | 7913 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 7914 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 7915 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 7916 | ofpact->len = len; |
2bd318de | 7917 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
7918 | |
7919 | return ofpacts->header; | |
f25d0cf3 | 7920 | } |
c2d936a4 | 7921 | \f |
cab50449 | 7922 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7923 | ofpact_parse(enum ofpact_type type, char *value, struct ofpbuf *ofpacts, |
7924 | enum ofputil_protocol *usable_protocols) | |
7925 | { | |
7926 | switch (type) { | |
7927 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7928 | case OFPACT_##ENUM: \ | |
7929 | return parse_##ENUM(value, ofpacts, usable_protocols); | |
7930 | OFPACTS | |
7931 | #undef OFPACT | |
7932 | default: | |
7933 | OVS_NOT_REACHED(); | |
7934 | } | |
7935 | } | |
7936 | ||
7937 | static bool | |
7938 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
7939 | { | |
7940 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7941 | if (!strcasecmp(name, NAME)) { \ | |
7942 | *type = OFPACT_##ENUM; \ | |
7943 | return true; \ | |
7944 | } | |
7945 | OFPACTS | |
7946 | #undef OFPACT | |
7947 | ||
7948 | return false; | |
7949 | } | |
7950 | ||
7951 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
7952 | * | |
7953 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
7954 | * error. The caller is responsible for freeing the returned string. |
7955 | * | |
7956 | * If 'outer_action' is specified, indicates that the actions being parsed | |
7957 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 7958 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7959 | ofpacts_parse__(char *str, struct ofpbuf *ofpacts, |
7960 | enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 7961 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
7962 | { |
7963 | int prev_inst = -1; | |
7964 | enum ofperr retval; | |
7965 | char *key, *value; | |
7966 | bool drop = false; | |
7967 | char *pos; | |
7968 | ||
7969 | pos = str; | |
7970 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
7971 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
7972 | enum ofpact_type type; | |
7973 | char *error = NULL; | |
7974 | ofp_port_t port; | |
7975 | ||
7976 | if (ofpact_type_from_name(key, &type)) { | |
7977 | error = ofpact_parse(type, value, ofpacts, usable_protocols); | |
7978 | inst = ovs_instruction_type_from_ofpact_type(type); | |
7979 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
7980 | error = parse_set_vlan_vid(value, ofpacts, true); | |
7981 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { | |
7982 | error = parse_set_vlan_pcp(value, ofpacts, true); | |
7983 | } else if (!strcasecmp(key, "set_nw_ttl")) { | |
7984 | error = parse_SET_IP_TTL(value, ofpacts, usable_protocols); | |
7985 | } else if (!strcasecmp(key, "pop_vlan")) { | |
7986 | error = parse_pop_vlan(ofpacts); | |
7987 | } else if (!strcasecmp(key, "set_tunnel64")) { | |
7988 | error = parse_set_tunnel(value, ofpacts, | |
7989 | NXAST_RAW_SET_TUNNEL64); | |
7eb4b1f1 BP |
7990 | } else if (!strcasecmp(key, "load")) { |
7991 | error = parse_reg_load(value, ofpacts); | |
c2d936a4 BP |
7992 | } else if (!strcasecmp(key, "bundle_load")) { |
7993 | error = parse_bundle_load(value, ofpacts); | |
7994 | } else if (!strcasecmp(key, "drop")) { | |
7995 | drop = true; | |
7996 | } else if (!strcasecmp(key, "apply_actions")) { | |
7997 | return xstrdup("apply_actions is the default instruction"); | |
7998 | } else if (ofputil_port_from_string(key, &port)) { | |
7999 | ofpact_put_OUTPUT(ofpacts)->port = port; | |
8000 | } else { | |
8001 | return xasprintf("unknown action %s", key); | |
8002 | } | |
8003 | if (error) { | |
8004 | return error; | |
8005 | } | |
8006 | ||
8007 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
8008 | if (!allow_instructions) { | |
8009 | return xasprintf("only actions are allowed here (not " | |
8010 | "instruction %s)", | |
8011 | ovs_instruction_name_from_type(inst)); | |
8012 | } | |
8013 | if (inst == prev_inst) { | |
8014 | return xasprintf("instruction %s may be specified only once", | |
8015 | ovs_instruction_name_from_type(inst)); | |
8016 | } | |
8017 | } | |
8018 | if (prev_inst != -1 && inst < prev_inst) { | |
8019 | return xasprintf("instruction %s must be specified before %s", | |
8020 | ovs_instruction_name_from_type(inst), | |
8021 | ovs_instruction_name_from_type(prev_inst)); | |
8022 | } | |
8023 | prev_inst = inst; | |
8024 | } | |
c2d936a4 | 8025 | |
6fd6ed71 | 8026 | if (drop && ofpacts->size) { |
c2d936a4 BP |
8027 | return xstrdup("\"drop\" must not be accompanied by any other action " |
8028 | "or instruction"); | |
8029 | } | |
8030 | ||
6fd6ed71 | 8031 | retval = ofpacts_verify(ofpacts->data, ofpacts->size, |
c2d936a4 BP |
8032 | (allow_instructions |
8033 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
8034 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
8035 | outer_action); | |
c2d936a4 BP |
8036 | if (retval) { |
8037 | return xstrdup("Incorrect instruction ordering"); | |
8038 | } | |
8039 | ||
8040 | return NULL; | |
8041 | } | |
8042 | ||
cab50449 | 8043 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 8044 | ofpacts_parse(char *str, struct ofpbuf *ofpacts, |
d824b5b7 JS |
8045 | enum ofputil_protocol *usable_protocols, bool allow_instructions, |
8046 | enum ofpact_type outer_action) | |
c2d936a4 | 8047 | { |
6fd6ed71 | 8048 | uint32_t orig_size = ofpacts->size; |
c2d936a4 | 8049 | char *error = ofpacts_parse__(str, ofpacts, usable_protocols, |
d824b5b7 | 8050 | allow_instructions, outer_action); |
c2d936a4 | 8051 | if (error) { |
6fd6ed71 | 8052 | ofpacts->size = orig_size; |
c2d936a4 BP |
8053 | } |
8054 | return error; | |
8055 | } | |
8056 | ||
cab50449 | 8057 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
8058 | ofpacts_parse_copy(const char *s_, struct ofpbuf *ofpacts, |
8059 | enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 8060 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8061 | { |
8062 | char *error, *s; | |
8063 | ||
8064 | *usable_protocols = OFPUTIL_P_ANY; | |
8065 | ||
8066 | s = xstrdup(s_); | |
d824b5b7 JS |
8067 | error = ofpacts_parse(s, ofpacts, usable_protocols, allow_instructions, |
8068 | outer_action); | |
c2d936a4 BP |
8069 | free(s); |
8070 | ||
8071 | return error; | |
8072 | } | |
8073 | ||
8074 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
8075 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
8076 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
8077 | * |
8078 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8079 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8080 | char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
8081 | ofpacts_parse_actions(const char *s, struct ofpbuf *ofpacts, |
8082 | enum ofputil_protocol *usable_protocols) | |
8083 | { | |
d824b5b7 | 8084 | return ofpacts_parse_copy(s, ofpacts, usable_protocols, false, 0); |
c2d936a4 BP |
8085 | } |
8086 | ||
8087 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
8088 | * 'ofpacts'. | |
8089 | * | |
8090 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8091 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8092 | char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
8093 | ofpacts_parse_instructions(const char *s, struct ofpbuf *ofpacts, |
8094 | enum ofputil_protocol *usable_protocols) | |
8095 | { | |
d824b5b7 | 8096 | return ofpacts_parse_copy(s, ofpacts, usable_protocols, true, 0); |
c2d936a4 | 8097 | } |
08d1e234 BP |
8098 | |
8099 | const char * | |
8100 | ofpact_name(enum ofpact_type type) | |
8101 | { | |
8102 | switch (type) { | |
8103 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
8104 | OFPACTS | |
8105 | #undef OFPACT | |
8106 | } | |
8107 | return "<unknown>"; | |
8108 | } | |
c2d936a4 BP |
8109 | \f |
8110 | /* Low-level action decoding and encoding functions. */ | |
8111 | ||
8112 | /* Everything needed to identify a particular OpenFlow action. */ | |
8113 | struct ofpact_hdrs { | |
8114 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
8115 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
8116 | uint8_t ofp_version; /* From ofp_header. */ | |
8117 | }; | |
8118 | ||
8119 | /* Information about a particular OpenFlow action. */ | |
8120 | struct ofpact_raw_instance { | |
8121 | /* The action's identity. */ | |
8122 | struct ofpact_hdrs hdrs; | |
8123 | enum ofp_raw_action_type raw; | |
8124 | ||
8125 | /* Looking up the action. */ | |
8126 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
8127 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
8128 | ||
8129 | /* The action's encoded size. | |
8130 | * | |
8131 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
8132 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
8133 | * OFP_ACTION_ALIGN) == 65528. */ | |
8134 | unsigned short int min_length; | |
8135 | unsigned short int max_length; | |
8136 | ||
8137 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
8138 | * offset of that argument from the beginning of the action and 'arg_len' | |
8139 | * its length, both in bytes. | |
8140 | * | |
8141 | * For actions that take other forms, these are both zero. */ | |
8142 | unsigned short int arg_ofs; | |
8143 | unsigned short int arg_len; | |
8144 | ||
8145 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
8146 | const char *name; | |
8147 | ||
8148 | /* If this action is deprecated, a human-readable string with a brief | |
8149 | * explanation. */ | |
8150 | const char *deprecation; | |
8151 | }; | |
8152 | ||
8153 | /* Action header. */ | |
8154 | struct ofp_action_header { | |
8155 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
8156 | * version (see enum ofp_raw_action_type). | |
8157 | * | |
8158 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
8159 | * designates an OpenFlow vendor ID and that the remainder of the action | |
8160 | * structure has a vendor-defined meaning. | |
8161 | */ | |
8162 | #define OFPAT_VENDOR 0xffff | |
8163 | ovs_be16 type; | |
8164 | ||
8165 | /* Always a multiple of 8. */ | |
8166 | ovs_be16 len; | |
8167 | ||
8168 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
8169 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
8170 | ovs_be32 vendor; | |
8171 | }; | |
8172 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
8173 | ||
c2d936a4 BP |
8174 | static bool |
8175 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
8176 | const struct ofpact_hdrs *b) | |
8177 | { | |
8178 | return (a->vendor == b->vendor | |
8179 | && a->type == b->type | |
8180 | && a->ofp_version == b->ofp_version); | |
8181 | } | |
8182 | ||
8183 | static uint32_t | |
8184 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
8185 | { | |
8186 | return hash_2words(hdrs->vendor, (hdrs->type << 16) | hdrs->ofp_version); | |
8187 | } | |
8188 | ||
8189 | #include "ofp-actions.inc2" | |
8190 | ||
8191 | static struct hmap * | |
8192 | ofpact_decode_hmap(void) | |
8193 | { | |
8194 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8195 | static struct hmap hmap; | |
8196 | ||
8197 | if (ovsthread_once_start(&once)) { | |
8198 | struct ofpact_raw_instance *inst; | |
8199 | ||
8200 | hmap_init(&hmap); | |
8201 | for (inst = all_raw_instances; | |
8202 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8203 | inst++) { | |
8204 | hmap_insert(&hmap, &inst->decode_node, | |
8205 | ofpact_hdrs_hash(&inst->hdrs)); | |
8206 | } | |
8207 | ovsthread_once_done(&once); | |
8208 | } | |
8209 | return &hmap; | |
8210 | } | |
8211 | ||
8212 | static struct hmap * | |
8213 | ofpact_encode_hmap(void) | |
8214 | { | |
8215 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8216 | static struct hmap hmap; | |
8217 | ||
8218 | if (ovsthread_once_start(&once)) { | |
8219 | struct ofpact_raw_instance *inst; | |
8220 | ||
8221 | hmap_init(&hmap); | |
8222 | for (inst = all_raw_instances; | |
8223 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8224 | inst++) { | |
8225 | hmap_insert(&hmap, &inst->encode_node, | |
8226 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
8227 | } | |
8228 | ovsthread_once_done(&once); | |
8229 | } | |
8230 | return &hmap; | |
8231 | } | |
8232 | ||
8233 | static enum ofperr | |
8234 | ofpact_decode_raw(enum ofp_version ofp_version, | |
8235 | const struct ofp_action_header *oah, size_t length, | |
8236 | const struct ofpact_raw_instance **instp) | |
8237 | { | |
8238 | const struct ofpact_raw_instance *inst; | |
8239 | struct ofpact_hdrs hdrs; | |
8240 | ||
8241 | *instp = NULL; | |
8242 | if (length < sizeof *oah) { | |
8243 | return OFPERR_OFPBAC_BAD_LEN; | |
8244 | } | |
8245 | ||
8246 | /* Get base action type. */ | |
8247 | if (oah->type == htons(OFPAT_VENDOR)) { | |
8248 | /* Get vendor. */ | |
8249 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
8250 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
8251 | /* Get extension subtype. */ | |
8252 | const struct ext_action_header *nah; | |
c2d936a4 | 8253 | |
232c1e12 | 8254 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
8255 | if (length < sizeof *nah) { |
8256 | return OFPERR_OFPBAC_BAD_LEN; | |
8257 | } | |
8258 | hdrs.type = ntohs(nah->subtype); | |
8259 | } else { | |
8260 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
8261 | hdrs.vendor); | |
8262 | return OFPERR_OFPBAC_BAD_VENDOR; | |
8263 | } | |
8264 | } else { | |
8265 | hdrs.vendor = 0; | |
8266 | hdrs.type = ntohs(oah->type); | |
8267 | } | |
8268 | ||
8269 | hdrs.ofp_version = ofp_version; | |
8270 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
8271 | ofpact_decode_hmap()) { | |
8272 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
8273 | *instp = inst; | |
8274 | return 0; | |
8275 | } | |
8276 | } | |
8277 | ||
8278 | return (hdrs.vendor | |
8279 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
8280 | : OFPERR_OFPBAC_BAD_TYPE); | |
8281 | } | |
8282 | ||
8283 | static enum ofperr | |
8284 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
8285 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
8286 | { | |
6fd6ed71 | 8287 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
8288 | const struct ofpact_raw_instance *action; |
8289 | unsigned int length; | |
8290 | enum ofperr error; | |
8291 | ||
8292 | *raw = *arg = 0; | |
6fd6ed71 | 8293 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
8294 | if (error) { |
8295 | return error; | |
8296 | } | |
8297 | ||
8298 | if (action->deprecation) { | |
8299 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
8300 | action->name, ofputil_version_to_string(ofp_version), | |
8301 | action->deprecation); | |
8302 | } | |
8303 | ||
8304 | length = ntohs(oah->len); | |
6fd6ed71 | 8305 | if (length > buf->size) { |
b153b990 | 8306 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 8307 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
8308 | return OFPERR_OFPBAC_BAD_LEN; |
8309 | } | |
c2d936a4 BP |
8310 | if (length < action->min_length || length > action->max_length) { |
8311 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
8312 | "[%hu,%hu]", action->name, length, | |
8313 | action->min_length, action->max_length); | |
8314 | return OFPERR_OFPBAC_BAD_LEN; | |
8315 | } | |
8316 | if (length % 8) { | |
8317 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
8318 | "of 8", action->name, length); | |
8319 | return OFPERR_OFPBAC_BAD_LEN; | |
8320 | } | |
8321 | ||
8322 | *raw = action->raw; | |
8323 | *arg = 0; | |
8324 | if (action->arg_len) { | |
8325 | const uint8_t *p; | |
8326 | int i; | |
8327 | ||
8328 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
8329 | for (i = 0; i < action->arg_len; i++) { | |
8330 | *arg = (*arg << 8) | p[i]; | |
8331 | } | |
8332 | } | |
8333 | ||
8334 | ofpbuf_pull(buf, length); | |
8335 | ||
8336 | return 0; | |
8337 | } | |
8338 | ||
8339 | static const struct ofpact_raw_instance * | |
8340 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
8341 | { | |
8342 | const struct ofpact_raw_instance *inst; | |
8343 | ||
8344 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
8345 | ofpact_encode_hmap()) { | |
8346 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
8347 | return inst; | |
8348 | } | |
8349 | } | |
8350 | OVS_NOT_REACHED(); | |
8351 | } | |
8352 | ||
8353 | static void * | |
8354 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
8355 | enum ofp_raw_action_type raw, uint64_t arg) | |
8356 | { | |
8357 | const struct ofpact_raw_instance *inst; | |
8358 | struct ofp_action_header *oah; | |
8359 | const struct ofpact_hdrs *hdrs; | |
8360 | ||
8361 | inst = ofpact_raw_lookup(ofp_version, raw); | |
8362 | hdrs = &inst->hdrs; | |
8363 | ||
8364 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
8365 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
8366 | oah->len = htons(inst->min_length); | |
8367 | oah->vendor = htonl(hdrs->vendor); | |
8368 | ||
8369 | switch (hdrs->vendor) { | |
8370 | case 0: | |
8371 | break; | |
8372 | ||
232c1e12 BP |
8373 | case NX_VENDOR_ID: |
8374 | case ONF_VENDOR_ID: { | |
8375 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
8376 | nah->subtype = htons(hdrs->type); |
8377 | break; | |
8378 | } | |
8379 | ||
8380 | default: | |
8381 | OVS_NOT_REACHED(); | |
8382 | } | |
8383 | ||
8384 | if (inst->arg_len) { | |
8385 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
8386 | int i; | |
8387 | ||
8388 | for (i = 0; i < inst->arg_len; i++) { | |
8389 | *--p = arg; | |
8390 | arg >>= 8; | |
8391 | } | |
8392 | } else { | |
8393 | ovs_assert(!arg); | |
8394 | } | |
8395 | ||
8396 | return oah; | |
8397 | } | |
178742f9 BP |
8398 | |
8399 | static void | |
8400 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
8401 | { | |
8402 | struct ofp_action_header *oah; | |
8403 | ||
9ac0aada JR |
8404 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
8405 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
8406 | |
8407 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 8408 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
8409 | } |
8410 |