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f25d0cf3 | 1 | /* |
77ab5fd2 | 2 | * Copyright (c) 2008-2016 Nicira, Inc. |
f25d0cf3 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
d787ad39 JS |
18 | #include <netinet/in.h> |
19 | ||
f25d0cf3 BP |
20 | #include "bundle.h" |
21 | #include "byte-order.h" | |
b1c5bf1f | 22 | #include "colors.h" |
f25d0cf3 | 23 | #include "compiler.h" |
d4abaff5 | 24 | #include "dummy.h" |
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 | ||
d4abaff5 BP |
331 | /* ## ------------------ ## */ |
332 | /* ## Debugging actions. ## */ | |
333 | /* ## ------------------ ## */ | |
334 | ||
335 | /* These are intentionally undocumented, subject to change, and ovs-vswitchd */ | |
336 | /* accepts them only if started with --enable-dummy. */ | |
337 | ||
338 | /* NX1.0+(255): void. */ | |
339 | NXAST_RAW_DEBUG_RECIRC, | |
c2d936a4 BP |
340 | }; |
341 | ||
342 | /* OpenFlow actions are always a multiple of 8 bytes in length. */ | |
343 | #define OFP_ACTION_ALIGN 8 | |
344 | ||
345 | /* Define a few functions for working with instructions. */ | |
346 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
347 | static inline const struct STRUCT * OVS_UNUSED \ | |
348 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
349 | { \ | |
350 | ovs_assert(inst->type == htons(ENUM)); \ | |
351 | return ALIGNED_CAST(struct STRUCT *, inst); \ | |
352 | } \ | |
353 | \ | |
354 | static inline void OVS_UNUSED \ | |
355 | instruction_init_##ENUM(struct STRUCT *s) \ | |
356 | { \ | |
357 | memset(s, 0, sizeof *s); \ | |
358 | s->type = htons(ENUM); \ | |
359 | s->len = htons(sizeof *s); \ | |
360 | } \ | |
361 | \ | |
362 | static inline struct STRUCT * OVS_UNUSED \ | |
363 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
364 | { \ | |
365 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
366 | instruction_init_##ENUM(s); \ | |
367 | return s; \ | |
368 | } | |
369 | OVS_INSTRUCTIONS | |
370 | #undef DEFINE_INST | |
371 | ||
372 | static void ofpacts_update_instruction_actions(struct ofpbuf *openflow, | |
373 | size_t ofs); | |
178742f9 | 374 | static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs); |
c2d936a4 BP |
375 | |
376 | static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len, | |
d824b5b7 JS |
377 | uint32_t allowed_ovsinsts, |
378 | enum ofpact_type outer_action); | |
c2d936a4 | 379 | |
128684a6 JR |
380 | static void put_set_field(struct ofpbuf *openflow, enum ofp_version, |
381 | enum mf_field_id, uint64_t value); | |
c2d936a4 | 382 | |
4b684612 BP |
383 | static void put_reg_load(struct ofpbuf *openflow, |
384 | const struct mf_subfield *, uint64_t value); | |
385 | ||
c2d936a4 BP |
386 | static enum ofperr ofpact_pull_raw(struct ofpbuf *, enum ofp_version, |
387 | enum ofp_raw_action_type *, uint64_t *arg); | |
388 | static void *ofpact_put_raw(struct ofpbuf *, enum ofp_version, | |
389 | enum ofp_raw_action_type, uint64_t arg); | |
390 | ||
cab50449 | 391 | static char *OVS_WARN_UNUSED_RESULT ofpacts_parse( |
c2d936a4 | 392 | char *str, struct ofpbuf *ofpacts, enum ofputil_protocol *usable_protocols, |
d824b5b7 | 393 | bool allow_instructions, enum ofpact_type outer_action); |
07659514 JS |
394 | static enum ofperr ofpacts_pull_openflow_actions__( |
395 | struct ofpbuf *openflow, unsigned int actions_len, | |
396 | enum ofp_version version, uint32_t allowed_ovsinsts, | |
397 | struct ofpbuf *ofpacts, enum ofpact_type outer_action); | |
8e53fe8c JS |
398 | static char * OVS_WARN_UNUSED_RESULT ofpacts_parse_copy( |
399 | const char *s_, struct ofpbuf *ofpacts, | |
400 | enum ofputil_protocol *usable_protocols, | |
401 | bool allow_instructions, enum ofpact_type outer_action); | |
d824b5b7 | 402 | |
4f20179d BP |
403 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
404 | * nested ofpacts it returns the first one. */ | |
405 | struct ofpact * | |
406 | ofpact_next_flattened(const struct ofpact *ofpact) | |
407 | { | |
408 | switch (ofpact->type) { | |
409 | case OFPACT_OUTPUT: | |
410 | case OFPACT_GROUP: | |
411 | case OFPACT_CONTROLLER: | |
412 | case OFPACT_ENQUEUE: | |
413 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 414 | case OFPACT_OUTPUT_TRUNC: |
4f20179d BP |
415 | case OFPACT_BUNDLE: |
416 | case OFPACT_SET_FIELD: | |
417 | case OFPACT_SET_VLAN_VID: | |
418 | case OFPACT_SET_VLAN_PCP: | |
419 | case OFPACT_STRIP_VLAN: | |
420 | case OFPACT_PUSH_VLAN: | |
421 | case OFPACT_SET_ETH_SRC: | |
422 | case OFPACT_SET_ETH_DST: | |
423 | case OFPACT_SET_IPV4_SRC: | |
424 | case OFPACT_SET_IPV4_DST: | |
425 | case OFPACT_SET_IP_DSCP: | |
426 | case OFPACT_SET_IP_ECN: | |
427 | case OFPACT_SET_IP_TTL: | |
428 | case OFPACT_SET_L4_SRC_PORT: | |
429 | case OFPACT_SET_L4_DST_PORT: | |
430 | case OFPACT_REG_MOVE: | |
431 | case OFPACT_STACK_PUSH: | |
432 | case OFPACT_STACK_POP: | |
433 | case OFPACT_DEC_TTL: | |
434 | case OFPACT_SET_MPLS_LABEL: | |
435 | case OFPACT_SET_MPLS_TC: | |
436 | case OFPACT_SET_MPLS_TTL: | |
437 | case OFPACT_DEC_MPLS_TTL: | |
438 | case OFPACT_PUSH_MPLS: | |
439 | case OFPACT_POP_MPLS: | |
440 | case OFPACT_SET_TUNNEL: | |
441 | case OFPACT_SET_QUEUE: | |
442 | case OFPACT_POP_QUEUE: | |
443 | case OFPACT_FIN_TIMEOUT: | |
444 | case OFPACT_RESUBMIT: | |
445 | case OFPACT_LEARN: | |
446 | case OFPACT_CONJUNCTION: | |
447 | case OFPACT_MULTIPATH: | |
448 | case OFPACT_NOTE: | |
449 | case OFPACT_EXIT: | |
450 | case OFPACT_SAMPLE: | |
451 | case OFPACT_UNROLL_XLATE: | |
452 | case OFPACT_DEBUG_RECIRC: | |
453 | case OFPACT_METER: | |
454 | case OFPACT_CLEAR_ACTIONS: | |
455 | case OFPACT_WRITE_METADATA: | |
456 | case OFPACT_GOTO_TABLE: | |
457 | case OFPACT_NAT: | |
458 | return ofpact_next(ofpact); | |
459 | ||
7ae62a67 WT |
460 | case OFPACT_CLONE: |
461 | return ofpact_get_CLONE(ofpact)->actions; | |
462 | ||
4f20179d BP |
463 | case OFPACT_CT: |
464 | return ofpact_get_CT(ofpact)->actions; | |
465 | ||
466 | case OFPACT_WRITE_ACTIONS: | |
467 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
468 | } | |
469 | ||
470 | OVS_NOT_REACHED(); | |
471 | } | |
472 | ||
d824b5b7 JS |
473 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
474 | * ofpacts_parse() oblivious of actions nesting. | |
475 | * | |
476 | * Push the actions back on after nested parsing, e.g.: | |
477 | * | |
478 | * size_t ofs = ofpacts_pull(ofpacts); | |
479 | * ...nested parsing... | |
480 | * ofpbuf_push_uninit(ofpacts, ofs); | |
481 | */ | |
482 | static size_t | |
483 | ofpacts_pull(struct ofpbuf *ofpacts) | |
484 | { | |
485 | size_t ofs; | |
486 | ||
d824b5b7 JS |
487 | ofs = ofpacts->size; |
488 | ofpbuf_pull(ofpacts, ofs); | |
489 | ||
490 | return ofs; | |
491 | } | |
c2d936a4 BP |
492 | |
493 | #include "ofp-actions.inc1" | |
494 | \f | |
495 | /* Output actions. */ | |
496 | ||
497 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
498 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
499 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
500 | * packet should be sent. */ | |
501 | struct ofp10_action_output { | |
502 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
503 | ovs_be16 len; /* Length is 8. */ | |
504 | ovs_be16 port; /* Output port. */ | |
505 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 506 | }; |
c2d936a4 BP |
507 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
508 | ||
509 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
510 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
511 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
512 | * packet should be sent.*/ | |
513 | struct ofp11_action_output { | |
514 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
515 | ovs_be16 len; /* Length is 16. */ | |
516 | ovs_be32 port; /* Output port. */ | |
517 | ovs_be16 max_len; /* Max length to send to controller. */ | |
518 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
519 | }; | |
520 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 521 | |
f25d0cf3 | 522 | static enum ofperr |
c2d936a4 | 523 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 524 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 525 | struct ofpbuf *out) |
f25d0cf3 BP |
526 | { |
527 | struct ofpact_output *output; | |
528 | ||
529 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 530 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
531 | output->max_len = ntohs(oao->max_len); |
532 | ||
57ad4e9e | 533 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
534 | } |
535 | ||
536 | static enum ofperr | |
c2d936a4 | 537 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
538 | enum ofp_version ofp_version OVS_UNUSED, |
539 | struct ofpbuf *out) | |
f25d0cf3 | 540 | { |
c2d936a4 BP |
541 | struct ofpact_output *output; |
542 | enum ofperr error; | |
f25d0cf3 | 543 | |
c2d936a4 BP |
544 | output = ofpact_put_OUTPUT(out); |
545 | output->max_len = ntohs(oao->max_len); | |
546 | ||
547 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
548 | if (error) { | |
549 | return error; | |
f25d0cf3 | 550 | } |
c2d936a4 BP |
551 | |
552 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
553 | } |
554 | ||
555 | static void | |
c2d936a4 BP |
556 | encode_OUTPUT(const struct ofpact_output *output, |
557 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 558 | { |
c2d936a4 BP |
559 | if (ofp_version == OFP10_VERSION) { |
560 | struct ofp10_action_output *oao; | |
f25d0cf3 | 561 | |
c2d936a4 BP |
562 | oao = put_OFPAT10_OUTPUT(out); |
563 | oao->port = htons(ofp_to_u16(output->port)); | |
564 | oao->max_len = htons(output->max_len); | |
565 | } else { | |
566 | struct ofp11_action_output *oao; | |
567 | ||
568 | oao = put_OFPAT11_OUTPUT(out); | |
569 | oao->port = ofputil_port_to_ofp11(output->port); | |
570 | oao->max_len = htons(output->max_len); | |
571 | } | |
f25d0cf3 BP |
572 | } |
573 | ||
aaca4fe0 WT |
574 | static char * OVS_WARN_UNUSED_RESULT |
575 | parse_truncate_subfield(struct ofpact_output_trunc *output_trunc, | |
576 | const char *arg_) | |
577 | { | |
578 | char *key, *value; | |
579 | char *arg = CONST_CAST(char *, arg_); | |
580 | ||
581 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
582 | if (!strcmp(key, "port")) { | |
583 | if (!ofputil_port_from_string(value, &output_trunc->port)) { | |
584 | return xasprintf("output to unknown truncate port: %s", | |
585 | value); | |
586 | } | |
587 | if (ofp_to_u16(output_trunc->port) > ofp_to_u16(OFPP_MAX)) { | |
588 | if (output_trunc->port != OFPP_LOCAL && | |
589 | output_trunc->port != OFPP_IN_PORT) | |
590 | return xasprintf("output to unsupported truncate port: %s", | |
591 | value); | |
592 | } | |
593 | } else if (!strcmp(key, "max_len")) { | |
594 | char *err; | |
595 | ||
596 | err = str_to_u32(value, &output_trunc->max_len); | |
597 | if (err) { | |
598 | return err; | |
599 | } | |
600 | } else { | |
601 | return xasprintf("invalid key '%s' in output_trunc argument", | |
602 | key); | |
603 | } | |
604 | } | |
605 | return NULL; | |
606 | } | |
607 | ||
cab50449 | 608 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
609 | parse_OUTPUT(const char *arg, struct ofpbuf *ofpacts, |
610 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
f25d0cf3 | 611 | { |
c2d936a4 BP |
612 | if (strchr(arg, '[')) { |
613 | struct ofpact_output_reg *output_reg; | |
f25d0cf3 | 614 | |
c2d936a4 BP |
615 | output_reg = ofpact_put_OUTPUT_REG(ofpacts); |
616 | output_reg->max_len = UINT16_MAX; | |
617 | return mf_parse_subfield(&output_reg->src, arg); | |
aaca4fe0 WT |
618 | } else if (strstr(arg, "port") && strstr(arg, "max_len")) { |
619 | struct ofpact_output_trunc *output_trunc; | |
620 | ||
621 | output_trunc = ofpact_put_OUTPUT_TRUNC(ofpacts); | |
622 | return parse_truncate_subfield(output_trunc, arg); | |
c2d936a4 BP |
623 | } else { |
624 | struct ofpact_output *output; | |
625 | ||
626 | output = ofpact_put_OUTPUT(ofpacts); | |
627 | if (!ofputil_port_from_string(arg, &output->port)) { | |
628 | return xasprintf("%s: output to unknown port", arg); | |
629 | } | |
630 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
631 | return NULL; | |
f25d0cf3 | 632 | } |
c2d936a4 | 633 | } |
f25d0cf3 | 634 | |
c2d936a4 BP |
635 | static void |
636 | format_OUTPUT(const struct ofpact_output *a, struct ds *s) | |
637 | { | |
638 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
b1c5bf1f QM |
639 | ds_put_format(s, "%soutput:%s%"PRIu16, |
640 | colors.special, colors.end, a->port); | |
c2d936a4 BP |
641 | } else { |
642 | ofputil_format_port(a->port, s); | |
643 | if (a->port == OFPP_CONTROLLER) { | |
644 | ds_put_format(s, ":%"PRIu16, a->max_len); | |
645 | } | |
646 | } | |
f25d0cf3 | 647 | } |
c2d936a4 BP |
648 | \f |
649 | /* Group actions. */ | |
f25d0cf3 BP |
650 | |
651 | static enum ofperr | |
88c8ca26 | 652 | decode_OFPAT_RAW_GROUP(uint32_t group_id, |
f3cd3ac7 JS |
653 | enum ofp_version ofp_version OVS_UNUSED, |
654 | struct ofpbuf *out) | |
f25d0cf3 | 655 | { |
c2d936a4 BP |
656 | ofpact_put_GROUP(out)->group_id = group_id; |
657 | return 0; | |
658 | } | |
f25d0cf3 | 659 | |
c2d936a4 BP |
660 | static void |
661 | encode_GROUP(const struct ofpact_group *group, | |
662 | enum ofp_version ofp_version, struct ofpbuf *out) | |
663 | { | |
88c8ca26 | 664 | put_OFPAT_GROUP(out, ofp_version, group->group_id); |
c2d936a4 | 665 | } |
f25d0cf3 | 666 | |
cab50449 | 667 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
668 | parse_GROUP(char *arg, struct ofpbuf *ofpacts, |
669 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
670 | { | |
671 | return str_to_u32(arg, &ofpact_put_GROUP(ofpacts)->group_id); | |
f25d0cf3 BP |
672 | } |
673 | ||
674 | static void | |
c2d936a4 | 675 | format_GROUP(const struct ofpact_group *a, struct ds *s) |
f25d0cf3 | 676 | { |
b1c5bf1f QM |
677 | ds_put_format(s, "%sgroup:%s%"PRIu32, |
678 | colors.special, colors.end, a->group_id); | |
f25d0cf3 | 679 | } |
c2d936a4 BP |
680 | \f |
681 | /* Action structure for NXAST_CONTROLLER. | |
682 | * | |
683 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
684 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
685 | * specifying: | |
686 | * | |
687 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
688 | * | |
689 | * - 'controller_id': The ID of the controller connection to which the | |
690 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
691 | * sent only to controllers that have the specified controller connection | |
692 | * ID. See "struct nx_controller_id" for more information. */ | |
693 | struct nx_action_controller { | |
694 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
695 | ovs_be16 len; /* Length is 16. */ | |
696 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
697 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
698 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
699 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
700 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
701 | uint8_t zero; /* Must be zero. */ | |
702 | }; | |
703 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 704 | |
77ab5fd2 BP |
705 | /* Properties for NXAST_CONTROLLER2. |
706 | * | |
707 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
708 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
709 | enum nx_action_controller2_prop_type { |
710 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
711 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
712 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
713 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 714 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
bdcad671 BP |
715 | }; |
716 | ||
aad28f47 BP |
717 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
718 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 719 | |
c2d936a4 BP |
720 | static enum ofperr |
721 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 722 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 723 | struct ofpbuf *out) |
f25d0cf3 BP |
724 | { |
725 | struct ofpact_controller *oc; | |
726 | ||
727 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 728 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
729 | oc->max_len = ntohs(nac->max_len); |
730 | oc->controller_id = ntohs(nac->controller_id); | |
731 | oc->reason = nac->reason; | |
ce058104 | 732 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
733 | |
734 | return 0; | |
735 | } | |
736 | ||
737 | static enum ofperr | |
aad28f47 | 738 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
739 | enum ofp_version ofp_version OVS_UNUSED, |
740 | struct ofpbuf *out) | |
741 | { | |
aad28f47 | 742 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
743 | return OFPERR_NXBRC_MUST_BE_ZERO; |
744 | } | |
745 | ||
746 | size_t start_ofs = out->size; | |
747 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
748 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
749 | oc->max_len = UINT16_MAX; | |
750 | oc->reason = OFPR_ACTION; | |
751 | ||
752 | struct ofpbuf properties; | |
aad28f47 BP |
753 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
754 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
755 | |
756 | while (properties.size > 0) { | |
757 | struct ofpbuf payload; | |
758 | uint64_t type; | |
759 | ||
760 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
761 | if (error) { | |
762 | return error; | |
763 | } | |
764 | ||
765 | switch (type) { | |
766 | case NXAC2PT_MAX_LEN: | |
767 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
768 | break; | |
769 | ||
770 | case NXAC2PT_CONTROLLER_ID: | |
771 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
772 | break; | |
773 | ||
774 | case NXAC2PT_REASON: { | |
775 | uint8_t u8; | |
776 | error = ofpprop_parse_u8(&payload, &u8); | |
777 | oc->reason = u8; | |
778 | break; | |
779 | } | |
780 | ||
781 | case NXAC2PT_USERDATA: | |
782 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
783 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
784 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
785 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
786 | break; | |
787 | ||
77ab5fd2 BP |
788 | case NXAC2PT_PAUSE: |
789 | oc->pause = true; | |
790 | break; | |
791 | ||
bdcad671 BP |
792 | default: |
793 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
794 | break; | |
795 | } | |
796 | if (error) { | |
797 | return error; | |
798 | } | |
799 | } | |
800 | ||
ce058104 | 801 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 802 | |
c2d936a4 | 803 | return 0; |
f25d0cf3 BP |
804 | } |
805 | ||
c2d936a4 BP |
806 | static void |
807 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
808 | enum ofp_version ofp_version OVS_UNUSED, | |
809 | struct ofpbuf *out) | |
4cceacb9 | 810 | { |
bdcad671 | 811 | if (controller->userdata_len |
77ab5fd2 | 812 | || controller->pause |
bdcad671 BP |
813 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
814 | size_t start_ofs = out->size; | |
815 | put_NXAST_CONTROLLER2(out); | |
816 | if (controller->max_len != UINT16_MAX) { | |
817 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
818 | } | |
819 | if (controller->controller_id != 0) { | |
820 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
821 | controller->controller_id); | |
822 | } | |
823 | if (controller->reason != OFPR_ACTION) { | |
824 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
825 | } | |
826 | if (controller->userdata_len != 0) { | |
827 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
828 | controller->userdata_len); | |
829 | } | |
77ab5fd2 BP |
830 | if (controller->pause) { |
831 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
832 | } | |
bdcad671 BP |
833 | pad_ofpat(out, start_ofs); |
834 | } else { | |
835 | struct nx_action_controller *nac; | |
4cceacb9 | 836 | |
bdcad671 BP |
837 | nac = put_NXAST_CONTROLLER(out); |
838 | nac->max_len = htons(controller->max_len); | |
839 | nac->controller_id = htons(controller->controller_id); | |
840 | nac->reason = controller->reason; | |
841 | } | |
c2d936a4 BP |
842 | } |
843 | ||
cab50449 | 844 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
845 | parse_CONTROLLER(char *arg, struct ofpbuf *ofpacts, |
846 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
847 | { | |
848 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
849 | uint16_t controller_id = 0; | |
850 | uint16_t max_len = UINT16_MAX; | |
bdcad671 | 851 | const char *userdata = NULL; |
77ab5fd2 | 852 | bool pause = false; |
c2d936a4 BP |
853 | |
854 | if (!arg[0]) { | |
855 | /* Use defaults. */ | |
856 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
857 | char *error = str_to_u16(arg, "max_len", &max_len); | |
858 | if (error) { | |
859 | return error; | |
860 | } | |
861 | } else { | |
862 | char *name, *value; | |
863 | ||
864 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
865 | if (!strcmp(name, "reason")) { | |
866 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
867 | return xasprintf("unknown reason \"%s\"", value); | |
868 | } | |
869 | } else if (!strcmp(name, "max_len")) { | |
870 | char *error = str_to_u16(value, "max_len", &max_len); | |
871 | if (error) { | |
872 | return error; | |
873 | } | |
874 | } else if (!strcmp(name, "id")) { | |
875 | char *error = str_to_u16(value, "id", &controller_id); | |
876 | if (error) { | |
877 | return error; | |
878 | } | |
bdcad671 BP |
879 | } else if (!strcmp(name, "userdata")) { |
880 | userdata = value; | |
77ab5fd2 BP |
881 | } else if (!strcmp(name, "pause")) { |
882 | pause = true; | |
c2d936a4 BP |
883 | } else { |
884 | return xasprintf("unknown key \"%s\" parsing controller " | |
885 | "action", name); | |
886 | } | |
887 | } | |
4cceacb9 JS |
888 | } |
889 | ||
77ab5fd2 | 890 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause) { |
c2d936a4 | 891 | struct ofpact_output *output; |
4cceacb9 | 892 | |
c2d936a4 BP |
893 | output = ofpact_put_OUTPUT(ofpacts); |
894 | output->port = OFPP_CONTROLLER; | |
895 | output->max_len = max_len; | |
896 | } else { | |
897 | struct ofpact_controller *controller; | |
898 | ||
899 | controller = ofpact_put_CONTROLLER(ofpacts); | |
900 | controller->max_len = max_len; | |
901 | controller->reason = reason; | |
902 | controller->controller_id = controller_id; | |
77ab5fd2 | 903 | controller->pause = pause; |
bdcad671 BP |
904 | |
905 | if (userdata) { | |
906 | size_t start_ofs = ofpacts->size; | |
907 | const char *end = ofpbuf_put_hex(ofpacts, userdata, NULL); | |
908 | if (*end) { | |
909 | return xstrdup("bad hex digit in `controller' " | |
910 | "action `userdata'"); | |
911 | } | |
912 | size_t userdata_len = ofpacts->size - start_ofs; | |
913 | controller = ofpacts->header; | |
914 | controller->userdata_len = userdata_len; | |
915 | } | |
ce058104 | 916 | ofpact_finish_CONTROLLER(ofpacts, &controller); |
c2d936a4 BP |
917 | } |
918 | ||
919 | return NULL; | |
4cceacb9 JS |
920 | } |
921 | ||
bdcad671 BP |
922 | static void |
923 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
924 | { | |
925 | for (size_t i = 0; i < len; i++) { | |
926 | if (i) { | |
927 | ds_put_char(s, '.'); | |
928 | } | |
929 | ds_put_format(s, "%02"PRIx8, data[i]); | |
930 | } | |
931 | } | |
932 | ||
f25d0cf3 | 933 | static void |
c2d936a4 | 934 | format_CONTROLLER(const struct ofpact_controller *a, struct ds *s) |
f25d0cf3 | 935 | { |
77ab5fd2 BP |
936 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
937 | && !a->pause) { | |
b1c5bf1f QM |
938 | ds_put_format(s, "%sCONTROLLER:%s%"PRIu16, |
939 | colors.special, colors.end, a->max_len); | |
c2d936a4 BP |
940 | } else { |
941 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 942 | |
b1c5bf1f | 943 | ds_put_format(s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
944 | if (reason != OFPR_ACTION) { |
945 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
946 | ||
b1c5bf1f | 947 | ds_put_format(s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
948 | ofputil_packet_in_reason_to_string( |
949 | reason, reasonbuf, sizeof reasonbuf)); | |
950 | } | |
951 | if (a->max_len != UINT16_MAX) { | |
b1c5bf1f QM |
952 | ds_put_format(s, "%smax_len=%s%"PRIu16",", |
953 | colors.param, colors.end, a->max_len); | |
c2d936a4 BP |
954 | } |
955 | if (a->controller_id != 0) { | |
b1c5bf1f QM |
956 | ds_put_format(s, "%sid=%s%"PRIu16",", |
957 | colors.param, colors.end, a->controller_id); | |
c2d936a4 | 958 | } |
bdcad671 | 959 | if (a->userdata_len) { |
b1c5bf1f | 960 | ds_put_format(s, "%suserdata=%s", colors.param, colors.end); |
bdcad671 BP |
961 | format_hex_arg(s, a->userdata, a->userdata_len); |
962 | ds_put_char(s, ','); | |
963 | } | |
77ab5fd2 | 964 | if (a->pause) { |
b1c5bf1f | 965 | ds_put_format(s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 966 | } |
c2d936a4 | 967 | ds_chomp(s, ','); |
b1c5bf1f | 968 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 | 969 | } |
f25d0cf3 | 970 | } |
c2d936a4 BP |
971 | \f |
972 | /* Enqueue action. */ | |
973 | struct ofp10_action_enqueue { | |
974 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
975 | ovs_be16 len; /* Len is 16. */ | |
976 | ovs_be16 port; /* Port that queue belongs. Should | |
977 | refer to a valid physical port | |
978 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
979 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
980 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
981 | }; | |
982 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 983 | |
c2d967a5 | 984 | static enum ofperr |
c2d936a4 | 985 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 986 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 987 | struct ofpbuf *out) |
c2d967a5 | 988 | { |
c2d936a4 | 989 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 990 | |
c2d936a4 BP |
991 | enqueue = ofpact_put_ENQUEUE(out); |
992 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
993 | enqueue->queue = ntohl(oae->queue_id); | |
994 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
995 | && enqueue->port != OFPP_IN_PORT | |
996 | && enqueue->port != OFPP_LOCAL) { | |
997 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
998 | } | |
999 | return 0; | |
c2d967a5 MM |
1000 | } |
1001 | ||
c2d936a4 BP |
1002 | static void |
1003 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1004 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1005 | { |
c2d936a4 BP |
1006 | if (ofp_version == OFP10_VERSION) { |
1007 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1008 | |
c2d936a4 BP |
1009 | oae = put_OFPAT10_ENQUEUE(out); |
1010 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1011 | oae->queue_id = htonl(enqueue->queue); | |
1012 | } else { | |
0f2aaee9 BP |
1013 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1014 | ||
1015 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1016 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1017 | oao->max_len = OVS_BE16_MAX; | |
1018 | ||
1019 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1020 | } |
c2d936a4 | 1021 | } |
c2d967a5 | 1022 | |
cab50449 | 1023 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1024 | parse_ENQUEUE(char *arg, struct ofpbuf *ofpacts, |
1025 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1026 | { | |
1027 | char *sp = NULL; | |
1028 | char *port = strtok_r(arg, ":q,", &sp); | |
1029 | char *queue = strtok_r(NULL, "", &sp); | |
1030 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1031 | |
c2d936a4 BP |
1032 | if (port == NULL || queue == NULL) { |
1033 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1034 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1035 | } |
1036 | ||
c2d936a4 BP |
1037 | enqueue = ofpact_put_ENQUEUE(ofpacts); |
1038 | if (!ofputil_port_from_string(port, &enqueue->port)) { | |
1039 | return xasprintf("%s: enqueue to unknown port", port); | |
1040 | } | |
1041 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1042 | } |
1043 | ||
c2d936a4 BP |
1044 | static void |
1045 | format_ENQUEUE(const struct ofpact_enqueue *a, struct ds *s) | |
29089a54 | 1046 | { |
b1c5bf1f | 1047 | ds_put_format(s, "%senqueue:%s", colors.param, colors.end); |
c2d936a4 BP |
1048 | ofputil_format_port(a->port, s); |
1049 | ds_put_format(s, ":%"PRIu32, a->queue); | |
1050 | } | |
1051 | \f | |
1052 | /* Action structure for NXAST_OUTPUT_REG. | |
1053 | * | |
1054 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1055 | * | |
1056 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1057 | * the NXAST_REG_LOAD action. | |
1058 | * | |
1059 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1060 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1061 | * | |
1062 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1063 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1064 | * field of OFPAT_OUTPUT. | |
1065 | * | |
1066 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1067 | struct nx_action_output_reg { | |
1068 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1069 | ovs_be16 len; /* 24. */ | |
1070 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1071 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1072 | |
c2d936a4 BP |
1073 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1074 | ovs_be32 src; /* Source. */ | |
29089a54 | 1075 | |
c2d936a4 | 1076 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1077 | |
c2d936a4 BP |
1078 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1079 | }; | |
1080 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1081 | |
bad8a439 BP |
1082 | /* Action structure for NXAST_OUTPUT_REG2. |
1083 | * | |
1084 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1085 | * experimenter OXM as 'src'. | |
1086 | */ | |
1087 | struct nx_action_output_reg2 { | |
1088 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1089 | ovs_be16 len; /* 24. */ | |
1090 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1091 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1092 | ||
1093 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1094 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1095 | ||
1096 | /* Followed by: | |
1097 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1098 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1099 | uint8_t pad[10]; | |
1100 | }; | |
1101 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1102 | ||
a7a2d006 | 1103 | static enum ofperr |
c2d936a4 | 1104 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1105 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1106 | struct ofpbuf *out) |
a7a2d006 | 1107 | { |
c2d936a4 | 1108 | struct ofpact_output_reg *output_reg; |
a7a2d006 | 1109 | |
c2d936a4 | 1110 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1111 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1112 | } | |
a7a2d006 | 1113 | |
c2d936a4 | 1114 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1115 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1116 | output_reg->src.field = mf_from_nxm_header(ntohl(naor->src)); |
1117 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1118 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1119 | output_reg->max_len = ntohs(naor->max_len); | |
1120 | ||
1121 | return mf_check_src(&output_reg->src, NULL); | |
a7a2d006 JS |
1122 | } |
1123 | ||
bad8a439 BP |
1124 | static enum ofperr |
1125 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 JS |
1126 | enum ofp_version ofp_version OVS_UNUSED, |
1127 | struct ofpbuf *out) | |
bad8a439 BP |
1128 | { |
1129 | struct ofpact_output_reg *output_reg; | |
bad8a439 BP |
1130 | output_reg = ofpact_put_OUTPUT_REG(out); |
1131 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1132 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1133 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1134 | output_reg->max_len = ntohs(naor->max_len); | |
1135 | ||
0a2869d5 | 1136 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1137 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 BP |
1138 | |
1139 | enum ofperr error = nx_pull_header(&b, &output_reg->src.field, NULL); | |
bad8a439 BP |
1140 | if (error) { |
1141 | return error; | |
1142 | } | |
6fd6ed71 | 1143 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1144 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1145 | } | |
1146 | ||
1147 | return mf_check_src(&output_reg->src, NULL); | |
1148 | } | |
1149 | ||
c2d936a4 BP |
1150 | static void |
1151 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1152 | enum ofp_version ofp_version OVS_UNUSED, | |
1153 | struct ofpbuf *out) | |
f25d0cf3 | 1154 | { |
bad8a439 BP |
1155 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1156 | * cannot be encoded in the older form, encode it as | |
1157 | * NXAST_RAW_OUTPUT_REG2. */ | |
1158 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1159 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1160 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1161 | size_t size = out->size; |
bad8a439 BP |
1162 | |
1163 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1164 | output_reg->src.n_bits); | |
1165 | naor->max_len = htons(output_reg->max_len); | |
1166 | ||
6fd6ed71 | 1167 | out->size = size - sizeof naor->pad; |
bad8a439 | 1168 | nx_put_header(out, output_reg->src.field->id, 0, false); |
6fd6ed71 | 1169 | out->size = size; |
bad8a439 BP |
1170 | } else { |
1171 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1172 | |
bad8a439 BP |
1173 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1174 | output_reg->src.n_bits); | |
1175 | naor->src = htonl(mf_nxm_header(output_reg->src.field->id)); | |
1176 | naor->max_len = htons(output_reg->max_len); | |
1177 | } | |
f25d0cf3 BP |
1178 | } |
1179 | ||
cab50449 | 1180 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1181 | parse_OUTPUT_REG(const char *arg, struct ofpbuf *ofpacts, |
1182 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
f25d0cf3 | 1183 | { |
c2d936a4 | 1184 | return parse_OUTPUT(arg, ofpacts, usable_protocols); |
f25d0cf3 BP |
1185 | } |
1186 | ||
c2d936a4 BP |
1187 | static void |
1188 | format_OUTPUT_REG(const struct ofpact_output_reg *a, struct ds *s) | |
f25d0cf3 | 1189 | { |
b1c5bf1f | 1190 | ds_put_format(s, "%soutput:%s", colors.special, colors.end); |
c2d936a4 BP |
1191 | mf_format_subfield(&a->src, s); |
1192 | } | |
1193 | \f | |
1194 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1195 | * | |
1196 | * The bundle actions choose a slave from a supplied list of options. | |
1197 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1198 | * selection to a register. | |
1199 | * | |
1200 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1201 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1202 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1203 | * the total length of the action a multiple of 8. | |
1204 | * | |
1205 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1206 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1207 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1208 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1209 | * unsupported slave types. | |
1210 | * | |
1211 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1212 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1213 | * it should reject the action. | |
1214 | * | |
1215 | * Several algorithms take into account liveness when selecting slaves. The | |
1216 | * liveness of a slave is implementation defined (with one exception), but will | |
1217 | * generally take into account things like its carrier status and the results | |
1218 | * of any link monitoring protocols which happen to be running on it. In order | |
1219 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
63460a30 TLSC |
1220 | * considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the output |
1221 | * register if no slave is live. | |
c2d936a4 BP |
1222 | * |
1223 | * Some slave selection strategies require the use of a hash function, in which | |
1224 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1225 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1226 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1227 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1228 | * of 'basis' yield different hash results. | |
1229 | * | |
1230 | * The 'zero' parameter at the end of the action structure is reserved for | |
1231 | * future use. Switches are required to reject actions which have nonzero | |
1232 | * bytes in the 'zero' field. | |
1233 | * | |
1234 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1235 | * should reject actions which have nonzero bytes in either of these fields. | |
1236 | * | |
1237 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1238 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1239 | * similar to those for the NXAST_REG_LOAD action. */ | |
1240 | struct nx_action_bundle { | |
1241 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1242 | ovs_be16 len; /* Length including slaves. */ | |
1243 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1244 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1245 | |
c2d936a4 BP |
1246 | /* Slave choice algorithm to apply to hash value. */ |
1247 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1248 | |
c2d936a4 BP |
1249 | /* What fields to hash and how. */ |
1250 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1251 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1252 | |
c2d936a4 BP |
1253 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1254 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1255 | |
c2d936a4 BP |
1256 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1257 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1258 | |
c2d936a4 BP |
1259 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1260 | }; | |
1261 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1262 | |
c2d936a4 BP |
1263 | static enum ofperr |
1264 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
1265 | struct ofpbuf *ofpacts) | |
1266 | { | |
1267 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1268 | struct ofpact_bundle *bundle; | |
1269 | uint32_t slave_type; | |
1270 | size_t slaves_size, i; | |
1271 | enum ofperr error; | |
bd85dac1 | 1272 | |
c2d936a4 BP |
1273 | bundle = ofpact_put_BUNDLE(ofpacts); |
1274 | ||
1275 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1276 | bundle->basis = ntohs(nab->basis); | |
1277 | bundle->fields = ntohs(nab->fields); | |
1278 | bundle->algorithm = ntohs(nab->algorithm); | |
1279 | slave_type = ntohl(nab->slave_type); | |
1280 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1281 | ||
1282 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1283 | if (!flow_hash_fields_valid(bundle->fields)) { | |
1284 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) bundle->fields); | |
1285 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { | |
1286 | VLOG_WARN_RL(&rl, "too many slaves"); | |
1287 | } else if (bundle->algorithm != NX_BD_ALG_HRW | |
1288 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
1289 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) bundle->algorithm); | |
508a9338 | 1290 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
c2d936a4 BP |
1291 | VLOG_WARN_RL(&rl, "unsupported slave type %"PRIu16, slave_type); |
1292 | } else { | |
1293 | error = 0; | |
1294 | } | |
bd85dac1 | 1295 | |
c2d936a4 BP |
1296 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
1297 | VLOG_WARN_RL(&rl, "reserved field is nonzero"); | |
1298 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1299 | } | |
f25d0cf3 | 1300 | |
c2d936a4 BP |
1301 | if (load) { |
1302 | bundle->dst.field = mf_from_nxm_header(ntohl(nab->dst)); | |
1303 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); | |
1304 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
f25d0cf3 | 1305 | |
c2d936a4 BP |
1306 | if (bundle->dst.n_bits < 16) { |
1307 | VLOG_WARN_RL(&rl, "bundle_load action requires at least 16 bit " | |
1308 | "destination."); | |
1309 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1310 | } | |
1311 | } else { | |
1312 | if (nab->ofs_nbits || nab->dst) { | |
1313 | VLOG_WARN_RL(&rl, "bundle action has nonzero reserved fields"); | |
1314 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1315 | } | |
1316 | } | |
f25d0cf3 | 1317 | |
c2d936a4 BP |
1318 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
1319 | VLOG_WARN_RL(&rl, "Nicira action %s only has %"PRIuSIZE" bytes " | |
1320 | "allocated for slaves. %"PRIuSIZE" bytes are required " | |
1321 | "for %"PRIu16" slaves.", | |
1322 | load ? "bundle_load" : "bundle", slaves_size, | |
1323 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1324 | error = OFPERR_OFPBAC_BAD_LEN; | |
1325 | } | |
f25d0cf3 | 1326 | |
c2d936a4 | 1327 | for (i = 0; i < bundle->n_slaves; i++) { |
117d7249 | 1328 | ofp_port_t ofp_port = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); |
c2d936a4 | 1329 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); |
19b58f3c | 1330 | bundle = ofpacts->header; |
c2d936a4 | 1331 | } |
f25d0cf3 | 1332 | |
ce058104 | 1333 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1334 | if (!error) { |
1335 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1336 | } | |
1337 | return error; | |
1338 | } | |
f25d0cf3 | 1339 | |
c2d936a4 | 1340 | static enum ofperr |
f3cd3ac7 JS |
1341 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1342 | enum ofp_version ofp_version OVS_UNUSED, | |
1343 | struct ofpbuf *out) | |
c2d936a4 BP |
1344 | { |
1345 | return decode_bundle(false, nab, out); | |
1346 | } | |
f25d0cf3 | 1347 | |
c2d936a4 BP |
1348 | static enum ofperr |
1349 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1350 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1351 | struct ofpbuf *out) |
1352 | { | |
1353 | return decode_bundle(true, nab, out); | |
1354 | } | |
c2d967a5 | 1355 | |
c2d936a4 BP |
1356 | static void |
1357 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1358 | enum ofp_version ofp_version OVS_UNUSED, | |
1359 | struct ofpbuf *out) | |
1360 | { | |
1361 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1362 | struct nx_action_bundle *nab; | |
1363 | ovs_be16 *slaves; | |
1364 | size_t i; | |
f25d0cf3 | 1365 | |
c2d936a4 BP |
1366 | nab = (bundle->dst.field |
1367 | ? put_NXAST_BUNDLE_LOAD(out) | |
1368 | : put_NXAST_BUNDLE(out)); | |
1369 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1370 | nab->algorithm = htons(bundle->algorithm); | |
1371 | nab->fields = htons(bundle->fields); | |
1372 | nab->basis = htons(bundle->basis); | |
508a9338 | 1373 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1374 | nab->n_slaves = htons(bundle->n_slaves); |
1375 | if (bundle->dst.field) { | |
1376 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1377 | bundle->dst.n_bits); | |
508a9338 | 1378 | nab->dst = htonl(mf_nxm_header(bundle->dst.field->id)); |
c2d936a4 | 1379 | } |
f25d0cf3 | 1380 | |
c2d936a4 BP |
1381 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1382 | for (i = 0; i < bundle->n_slaves; i++) { | |
1383 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1384 | } | |
1385 | } | |
b02475c5 | 1386 | |
cab50449 | 1387 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1388 | parse_BUNDLE(const char *arg, struct ofpbuf *ofpacts, |
1389 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1390 | { | |
1391 | return bundle_parse(arg, ofpacts); | |
1392 | } | |
b02475c5 | 1393 | |
cab50449 | 1394 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1395 | parse_bundle_load(const char *arg, struct ofpbuf *ofpacts) |
1396 | { | |
1397 | return bundle_parse_load(arg, ofpacts); | |
1398 | } | |
097d4939 | 1399 | |
c2d936a4 BP |
1400 | static void |
1401 | format_BUNDLE(const struct ofpact_bundle *a, struct ds *s) | |
1402 | { | |
1403 | bundle_format(a, s); | |
1404 | } | |
1405 | \f | |
1406 | /* Set VLAN actions. */ | |
097d4939 | 1407 | |
c2d936a4 BP |
1408 | static enum ofperr |
1409 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1410 | { | |
1411 | if (vid & ~0xfff) { | |
1412 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1413 | } else { | |
1414 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1415 | vlan_vid->vlan_vid = vid; | |
1416 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1417 | return 0; | |
1418 | } | |
1419 | } | |
0f3f3c3d | 1420 | |
c2d936a4 | 1421 | static enum ofperr |
f3cd3ac7 JS |
1422 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1423 | enum ofp_version ofp_version OVS_UNUSED, | |
1424 | struct ofpbuf *out) | |
c2d936a4 BP |
1425 | { |
1426 | return decode_set_vlan_vid(vid, true, out); | |
1427 | } | |
b676167a | 1428 | |
c2d936a4 | 1429 | static enum ofperr |
f3cd3ac7 JS |
1430 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1431 | enum ofp_version ofp_version OVS_UNUSED, | |
1432 | struct ofpbuf *out) | |
c2d936a4 BP |
1433 | { |
1434 | return decode_set_vlan_vid(vid, false, out); | |
1435 | } | |
29089a54 | 1436 | |
c2d936a4 BP |
1437 | static void |
1438 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1439 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1440 | { | |
1441 | uint16_t vid = vlan_vid->vlan_vid; | |
1442 | ||
1443 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1444 | * for such a feature. */ | |
1445 | if (ofp_version > OFP10_VERSION | |
1446 | && vlan_vid->push_vlan_if_needed | |
1447 | && !vlan_vid->flow_has_vlan) { | |
1448 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1449 | } |
1450 | ||
c2d936a4 BP |
1451 | if (ofp_version == OFP10_VERSION) { |
1452 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1453 | } else if (ofp_version == OFP11_VERSION) { | |
1454 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1455 | } else { | |
128684a6 | 1456 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1457 | } |
f25d0cf3 BP |
1458 | } |
1459 | ||
cab50449 | 1460 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 1461 | parse_set_vlan_vid(char *arg, struct ofpbuf *ofpacts, bool push_vlan_if_needed) |
d01c980f | 1462 | { |
ca287d20 | 1463 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1464 | uint16_t vid; |
1465 | char *error; | |
d01c980f | 1466 | |
c2d936a4 | 1467 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1468 | if (error) { |
1469 | return error; | |
1470 | } | |
1471 | ||
c2d936a4 BP |
1472 | if (vid & ~VLAN_VID_MASK) { |
1473 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1474 | } |
c2d936a4 BP |
1475 | vlan_vid = ofpact_put_SET_VLAN_VID(ofpacts); |
1476 | vlan_vid->vlan_vid = vid; | |
1477 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1478 | return NULL; | |
1479 | } | |
d01c980f | 1480 | |
cab50449 | 1481 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1482 | parse_SET_VLAN_VID(char *arg, struct ofpbuf *ofpacts, |
1483 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1484 | { | |
1485 | return parse_set_vlan_vid(arg, ofpacts, false); | |
d01c980f BP |
1486 | } |
1487 | ||
c2d936a4 BP |
1488 | static void |
1489 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, struct ds *s) | |
1490 | { | |
b1c5bf1f | 1491 | ds_put_format(s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1492 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1493 | colors.end, a->vlan_vid); |
c2d936a4 BP |
1494 | } |
1495 | \f | |
1496 | /* Set PCP actions. */ | |
e3f8f887 | 1497 | |
c2d936a4 BP |
1498 | static enum ofperr |
1499 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1500 | { |
c2d936a4 BP |
1501 | if (pcp & ~7) { |
1502 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1503 | } else { | |
1504 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1505 | vlan_pcp->vlan_pcp = pcp; | |
1506 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1507 | return 0; | |
1508 | } | |
f25d0cf3 BP |
1509 | } |
1510 | ||
c2d936a4 | 1511 | static enum ofperr |
f3cd3ac7 JS |
1512 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1513 | enum ofp_version ofp_version OVS_UNUSED, | |
1514 | struct ofpbuf *out) | |
f25d0cf3 | 1515 | { |
c2d936a4 | 1516 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1517 | } |
1518 | ||
c2d936a4 | 1519 | static enum ofperr |
f3cd3ac7 JS |
1520 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1521 | enum ofp_version ofp_version OVS_UNUSED, | |
1522 | struct ofpbuf *out) | |
c2d936a4 BP |
1523 | { |
1524 | return decode_set_vlan_pcp(pcp, false, out); | |
1525 | } | |
f25d0cf3 | 1526 | |
699dddf1 | 1527 | static void |
c2d936a4 BP |
1528 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1529 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1530 | { |
c2d936a4 BP |
1531 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1532 | ||
1533 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1534 | * for such a feature. */ | |
1535 | if (ofp_version > OFP10_VERSION | |
1536 | && vlan_pcp->push_vlan_if_needed | |
1537 | && !vlan_pcp->flow_has_vlan) { | |
1538 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1539 | } | |
699dddf1 | 1540 | |
c2d936a4 BP |
1541 | if (ofp_version == OFP10_VERSION) { |
1542 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1543 | } else if (ofp_version == OFP11_VERSION) { | |
1544 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1545 | } else { | |
128684a6 | 1546 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1547 | } |
1548 | } | |
1549 | ||
cab50449 | 1550 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 1551 | parse_set_vlan_pcp(char *arg, struct ofpbuf *ofpacts, bool push_vlan_if_needed) |
f25d0cf3 | 1552 | { |
c2d936a4 BP |
1553 | struct ofpact_vlan_pcp *vlan_pcp; |
1554 | uint8_t pcp; | |
1555 | char *error; | |
e3f8f887 | 1556 | |
c2d936a4 BP |
1557 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1558 | if (error) { | |
699dddf1 | 1559 | return error; |
f25d0cf3 BP |
1560 | } |
1561 | ||
c2d936a4 BP |
1562 | if (pcp & ~7) { |
1563 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1564 | } | |
1565 | vlan_pcp = ofpact_put_SET_VLAN_PCP(ofpacts); | |
1566 | vlan_pcp->vlan_pcp = pcp; | |
1567 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1568 | return NULL; | |
1569 | } | |
1570 | ||
cab50449 | 1571 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1572 | parse_SET_VLAN_PCP(char *arg, struct ofpbuf *ofpacts, |
1573 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1574 | { | |
1575 | return parse_set_vlan_pcp(arg, ofpacts, false); | |
1576 | } | |
1577 | ||
1578 | static void | |
1579 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, struct ds *s) | |
1580 | { | |
b1c5bf1f | 1581 | ds_put_format(s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1582 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1583 | colors.end, a->vlan_pcp); |
c2d936a4 BP |
1584 | } |
1585 | \f | |
1586 | /* Strip VLAN actions. */ | |
1587 | ||
1588 | static enum ofperr | |
1589 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1590 | { | |
1591 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1592 | return 0; |
1593 | } | |
1594 | ||
8f2cded4 | 1595 | static enum ofperr |
c2d936a4 | 1596 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1597 | { |
c2d936a4 BP |
1598 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1599 | return 0; | |
1600 | } | |
f25d0cf3 | 1601 | |
c2d936a4 BP |
1602 | static void |
1603 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1604 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1605 | { | |
1606 | if (ofp_version == OFP10_VERSION) { | |
1607 | put_OFPAT10_STRIP_VLAN(out); | |
1608 | } else { | |
1609 | put_OFPAT11_POP_VLAN(out); | |
1610 | } | |
1611 | } | |
f25d0cf3 | 1612 | |
cab50449 | 1613 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1614 | parse_STRIP_VLAN(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
1615 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1616 | { | |
1617 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
1618 | return NULL; | |
1619 | } | |
1620 | ||
cab50449 | 1621 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1622 | parse_pop_vlan(struct ofpbuf *ofpacts) |
1623 | { | |
1624 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; | |
1625 | return NULL; | |
1626 | } | |
1627 | ||
1628 | static void | |
1629 | format_STRIP_VLAN(const struct ofpact_null *a, struct ds *s) | |
1630 | { | |
b1c5bf1f QM |
1631 | ds_put_format(s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
1632 | ? "%spop_vlan%s" | |
1633 | : "%sstrip_vlan%s"), | |
1634 | colors.value, colors.end); | |
c2d936a4 BP |
1635 | } |
1636 | \f | |
1637 | /* Push VLAN action. */ | |
1638 | ||
1639 | static enum ofperr | |
f3cd3ac7 JS |
1640 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1641 | enum ofp_version ofp_version OVS_UNUSED, | |
1642 | struct ofpbuf *out) | |
c2d936a4 BP |
1643 | { |
1644 | if (eth_type != htons(ETH_TYPE_VLAN_8021Q)) { | |
1645 | /* XXX 802.1AD(QinQ) isn't supported at the moment */ | |
1646 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
f25d0cf3 | 1647 | } |
c2d936a4 BP |
1648 | ofpact_put_PUSH_VLAN(out); |
1649 | return 0; | |
1650 | } | |
f25d0cf3 | 1651 | |
c2d936a4 BP |
1652 | static void |
1653 | encode_PUSH_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1654 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1655 | { | |
1656 | if (ofp_version == OFP10_VERSION) { | |
1657 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1658 | * follow this action. */ | |
1659 | } else { | |
1660 | /* XXX ETH_TYPE_VLAN_8021AD case */ | |
1661 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 | 1662 | } |
c2d936a4 | 1663 | } |
f25d0cf3 | 1664 | |
cab50449 | 1665 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1666 | parse_PUSH_VLAN(char *arg, struct ofpbuf *ofpacts, |
1667 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1668 | { | |
1669 | uint16_t ethertype; | |
1670 | char *error; | |
1671 | ||
1672 | *usable_protocols &= OFPUTIL_P_OF11_UP; | |
1673 | error = str_to_u16(arg, "ethertype", ðertype); | |
4cceacb9 | 1674 | if (error) { |
4cceacb9 JS |
1675 | return error; |
1676 | } | |
1677 | ||
c2d936a4 BP |
1678 | if (ethertype != ETH_TYPE_VLAN_8021Q) { |
1679 | /* XXX ETH_TYPE_VLAN_8021AD case isn't supported */ | |
1680 | return xasprintf("%s: not a valid VLAN ethertype", arg); | |
f25d0cf3 | 1681 | } |
c2d936a4 BP |
1682 | |
1683 | ofpact_put_PUSH_VLAN(ofpacts); | |
1684 | return NULL; | |
d01c980f BP |
1685 | } |
1686 | ||
c2d936a4 BP |
1687 | static void |
1688 | format_PUSH_VLAN(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
8f2cded4 | 1689 | { |
c2d936a4 | 1690 | /* XXX 802.1AD case*/ |
b1c5bf1f QM |
1691 | ds_put_format(s, "%spush_vlan:%s%#"PRIx16, |
1692 | colors.param, colors.end, ETH_TYPE_VLAN_8021Q); | |
8f2cded4 | 1693 | } |
d01c980f | 1694 | \f |
c2d936a4 BP |
1695 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1696 | struct ofp_action_dl_addr { | |
1697 | ovs_be16 type; /* Type. */ | |
1698 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1699 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1700 | uint8_t pad[6]; |
1701 | }; | |
1702 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1703 | |
d01c980f | 1704 | static enum ofperr |
c2d936a4 | 1705 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1706 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1707 | struct ofpbuf *out) |
d01c980f | 1708 | { |
74ff3298 | 1709 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1710 | return 0; |
1711 | } | |
3ddcaf2d | 1712 | |
c2d936a4 BP |
1713 | static enum ofperr |
1714 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1715 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1716 | struct ofpbuf *out) |
1717 | { | |
74ff3298 | 1718 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1719 | return 0; |
1720 | } | |
d01c980f | 1721 | |
c2d936a4 BP |
1722 | static void |
1723 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1724 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1725 | struct ofpbuf *out) | |
1726 | { | |
c2d936a4 BP |
1727 | if (ofp_version < OFP12_VERSION) { |
1728 | struct ofp_action_dl_addr *oada; | |
1729 | ||
1730 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1731 | oada->dl_addr = mac->mac; |
c2d936a4 | 1732 | } else { |
128684a6 | 1733 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1734 | } |
1735 | } | |
1736 | ||
c2d936a4 BP |
1737 | static void |
1738 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1739 | struct ofpbuf *out) | |
b2dd70be | 1740 | { |
c2d936a4 BP |
1741 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1742 | out); | |
b2dd70be | 1743 | |
c2d936a4 | 1744 | } |
b2dd70be | 1745 | |
c2d936a4 BP |
1746 | static void |
1747 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1748 | enum ofp_version ofp_version, | |
1749 | struct ofpbuf *out) | |
1750 | { | |
1751 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1752 | out); | |
b2dd70be | 1753 | |
c2d936a4 | 1754 | } |
b2dd70be | 1755 | |
cab50449 | 1756 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1757 | parse_SET_ETH_SRC(char *arg, struct ofpbuf *ofpacts, |
1758 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1759 | { | |
74ff3298 | 1760 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(ofpacts)->mac); |
c2d936a4 BP |
1761 | } |
1762 | ||
cab50449 | 1763 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1764 | parse_SET_ETH_DST(char *arg, struct ofpbuf *ofpacts, |
1765 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1766 | { | |
74ff3298 | 1767 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(ofpacts)->mac); |
b2dd70be JR |
1768 | } |
1769 | ||
1770 | static void | |
c2d936a4 | 1771 | format_SET_ETH_SRC(const struct ofpact_mac *a, struct ds *s) |
b2dd70be | 1772 | { |
b1c5bf1f QM |
1773 | ds_put_format(s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
1774 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 | 1775 | } |
b2dd70be | 1776 | |
c2d936a4 BP |
1777 | static void |
1778 | format_SET_ETH_DST(const struct ofpact_mac *a, struct ds *s) | |
1779 | { | |
b1c5bf1f QM |
1780 | ds_put_format(s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
1781 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 BP |
1782 | } |
1783 | \f | |
1784 | /* Set IPv4 address actions. */ | |
b2dd70be | 1785 | |
c2d936a4 | 1786 | static enum ofperr |
f3cd3ac7 JS |
1787 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1788 | enum ofp_version ofp_version OVS_UNUSED, | |
1789 | struct ofpbuf *out) | |
c2d936a4 BP |
1790 | { |
1791 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1792 | return 0; | |
b2dd70be JR |
1793 | } |
1794 | ||
c2d936a4 | 1795 | static enum ofperr |
f3cd3ac7 JS |
1796 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
1797 | enum ofp_version ofp_version OVS_UNUSED, | |
1798 | struct ofpbuf *out) | |
b2dd70be | 1799 | { |
c2d936a4 BP |
1800 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
1801 | return 0; | |
1802 | } | |
b2dd70be | 1803 | |
c2d936a4 BP |
1804 | static void |
1805 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
1806 | enum ofp_version ofp_version, | |
1807 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1808 | struct ofpbuf *out) | |
1809 | { | |
1810 | ovs_be32 addr = ipv4->ipv4; | |
1811 | if (ofp_version < OFP12_VERSION) { | |
1812 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 1813 | } else { |
128684a6 | 1814 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
1815 | } |
1816 | } | |
1817 | ||
a6fd70bb | 1818 | static void |
c2d936a4 BP |
1819 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
1820 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1821 | { |
c2d936a4 BP |
1822 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
1823 | out); | |
1824 | } | |
a6fd70bb | 1825 | |
c2d936a4 BP |
1826 | static void |
1827 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
1828 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1829 | { | |
1830 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
1831 | out); | |
1832 | } | |
a6fd70bb | 1833 | |
cab50449 | 1834 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1835 | parse_SET_IPV4_SRC(char *arg, struct ofpbuf *ofpacts, |
1836 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1837 | { | |
1838 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(ofpacts)->ipv4); | |
1839 | } | |
a6fd70bb | 1840 | |
cab50449 | 1841 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1842 | parse_SET_IPV4_DST(char *arg, struct ofpbuf *ofpacts, |
1843 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1844 | { | |
1845 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(ofpacts)->ipv4); | |
1846 | } | |
a6fd70bb | 1847 | |
c2d936a4 BP |
1848 | static void |
1849 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, struct ds *s) | |
1850 | { | |
b1c5bf1f QM |
1851 | ds_put_format(s, "%smod_nw_src:%s"IP_FMT, |
1852 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 | 1853 | } |
097d4939 | 1854 | |
c2d936a4 BP |
1855 | static void |
1856 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, struct ds *s) | |
1857 | { | |
b1c5bf1f QM |
1858 | ds_put_format(s, "%smod_nw_dst:%s"IP_FMT, |
1859 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 BP |
1860 | } |
1861 | \f | |
1862 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 1863 | |
c2d936a4 | 1864 | static enum ofperr |
f3cd3ac7 JS |
1865 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
1866 | enum ofp_version ofp_version OVS_UNUSED, | |
1867 | struct ofpbuf *out) | |
c2d936a4 BP |
1868 | { |
1869 | if (dscp & ~IP_DSCP_MASK) { | |
1870 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1871 | } else { | |
1872 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
1873 | return 0; | |
a6fd70bb JR |
1874 | } |
1875 | } | |
1876 | ||
a6fd70bb | 1877 | static void |
c2d936a4 BP |
1878 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
1879 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1880 | { |
c2d936a4 BP |
1881 | if (ofp_version < OFP12_VERSION) { |
1882 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
1883 | } else { | |
128684a6 | 1884 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
1885 | } |
1886 | } | |
a6fd70bb | 1887 | |
cab50449 | 1888 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1889 | parse_SET_IP_DSCP(char *arg, struct ofpbuf *ofpacts, |
1890 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1891 | { | |
1892 | uint8_t tos; | |
1893 | char *error; | |
a6fd70bb | 1894 | |
c2d936a4 BP |
1895 | error = str_to_u8(arg, "TOS", &tos); |
1896 | if (error) { | |
1897 | return error; | |
1898 | } | |
a6fd70bb | 1899 | |
c2d936a4 BP |
1900 | if (tos & ~IP_DSCP_MASK) { |
1901 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 1902 | } |
c2d936a4 BP |
1903 | ofpact_put_SET_IP_DSCP(ofpacts)->dscp = tos; |
1904 | return NULL; | |
a6fd70bb JR |
1905 | } |
1906 | ||
b2dd70be | 1907 | static void |
c2d936a4 | 1908 | format_SET_IP_DSCP(const struct ofpact_dscp *a, struct ds *s) |
b2dd70be | 1909 | { |
b1c5bf1f | 1910 | ds_put_format(s, "%smod_nw_tos:%s%d", colors.param, colors.end, a->dscp); |
c2d936a4 BP |
1911 | } |
1912 | \f | |
1913 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 1914 | |
c2d936a4 | 1915 | static enum ofperr |
f3cd3ac7 JS |
1916 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
1917 | enum ofp_version ofp_version OVS_UNUSED, | |
1918 | struct ofpbuf *out) | |
c2d936a4 BP |
1919 | { |
1920 | if (ecn & ~IP_ECN_MASK) { | |
1921 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 1922 | } else { |
c2d936a4 BP |
1923 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
1924 | return 0; | |
b2dd70be JR |
1925 | } |
1926 | } | |
1927 | ||
c2d936a4 BP |
1928 | static void |
1929 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
1930 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 1931 | { |
c2d936a4 BP |
1932 | uint8_t ecn = ip_ecn->ecn; |
1933 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
1934 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
1935 | .ofs = 0, .n_bits = 2 }; | |
1936 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
1937 | } else if (ofp_version == OFP11_VERSION) { |
1938 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
1939 | } else { | |
128684a6 | 1940 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
1941 | } |
1942 | } | |
d01c980f | 1943 | |
cab50449 | 1944 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1945 | parse_SET_IP_ECN(char *arg, struct ofpbuf *ofpacts, |
1946 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1947 | { | |
1948 | uint8_t ecn; | |
1949 | char *error; | |
d01c980f | 1950 | |
c2d936a4 | 1951 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
1952 | if (error) { |
1953 | return error; | |
1954 | } | |
1955 | ||
c2d936a4 BP |
1956 | if (ecn & ~IP_ECN_MASK) { |
1957 | return xasprintf("%s: not a valid ECN", arg); | |
1958 | } | |
1959 | ofpact_put_SET_IP_ECN(ofpacts)->ecn = ecn; | |
1960 | return NULL; | |
d01c980f BP |
1961 | } |
1962 | ||
c2d936a4 BP |
1963 | static void |
1964 | format_SET_IP_ECN(const struct ofpact_ecn *a, struct ds *s) | |
1965 | { | |
b1c5bf1f QM |
1966 | ds_put_format(s, "%smod_nw_ecn:%s%d", |
1967 | colors.param, colors.end, a->ecn); | |
c2d936a4 BP |
1968 | } |
1969 | \f | |
1970 | /* Set IPv4/v6 TTL actions. */ | |
1971 | ||
d01c980f | 1972 | static enum ofperr |
f3cd3ac7 JS |
1973 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
1974 | enum ofp_version ofp_version OVS_UNUSED, | |
1975 | struct ofpbuf *out) | |
d01c980f | 1976 | { |
c2d936a4 BP |
1977 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
1978 | return 0; | |
1979 | } | |
1980 | ||
1981 | static void | |
1982 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
1983 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1984 | { | |
1985 | if (ofp_version >= OFP11_VERSION) { | |
1986 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
1987 | } else { | |
56a91749 BP |
1988 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
1989 | .ofs = 0, .n_bits = 8 }; | |
1990 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
1991 | } |
1992 | } | |
1993 | ||
cab50449 | 1994 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1995 | parse_SET_IP_TTL(char *arg, struct ofpbuf *ofpacts, |
1996 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
1997 | { | |
1998 | uint8_t ttl; | |
1999 | char *error; | |
d01c980f | 2000 | |
c2d936a4 | 2001 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2002 | if (error) { |
2003 | return error; | |
2004 | } | |
2005 | ||
c2d936a4 BP |
2006 | ofpact_put_SET_IP_TTL(ofpacts)->ttl = ttl; |
2007 | return NULL; | |
2008 | } | |
d01c980f | 2009 | |
c2d936a4 BP |
2010 | static void |
2011 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, struct ds *s) | |
2012 | { | |
b1c5bf1f | 2013 | ds_put_format(s, "%smod_nw_ttl:%s%d", colors.param, colors.end, a->ttl); |
c2d936a4 BP |
2014 | } |
2015 | \f | |
2016 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2017 | |
c2d936a4 | 2018 | static enum ofperr |
f3cd3ac7 JS |
2019 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2020 | enum ofp_version ofp_version OVS_UNUSED, | |
2021 | struct ofpbuf *out) | |
c2d936a4 BP |
2022 | { |
2023 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2024 | return 0; | |
2025 | } | |
d01c980f | 2026 | |
c2d936a4 | 2027 | static enum ofperr |
f3cd3ac7 JS |
2028 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2029 | enum ofp_version ofp_version OVS_UNUSED, | |
2030 | struct ofpbuf *out) | |
c2d936a4 BP |
2031 | { |
2032 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2033 | return 0; | |
2034 | } | |
d01c980f | 2035 | |
c2d936a4 BP |
2036 | static void |
2037 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2038 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2039 | enum mf_field_id field, struct ofpbuf *out) | |
2040 | { | |
2041 | uint16_t port = l4_port->port; | |
3e34fbdd | 2042 | |
c2d936a4 | 2043 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2044 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2045 | } else { |
2046 | ofpact_put_raw(out, ofp_version, raw, port); | |
2047 | } | |
2048 | } | |
8e61c110 | 2049 | |
c2d936a4 BP |
2050 | static void |
2051 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2052 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2053 | { | |
2054 | uint8_t proto = l4_port->flow_ip_proto; | |
2055 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2056 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2057 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2058 | : MFF_N_IDS); | |
276c4e7a | 2059 | |
c2d936a4 BP |
2060 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2061 | } | |
d01c980f | 2062 | |
c2d936a4 BP |
2063 | static void |
2064 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2065 | enum ofp_version ofp_version, | |
2066 | struct ofpbuf *out) | |
2067 | { | |
2068 | uint8_t proto = l4_port->flow_ip_proto; | |
2069 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2070 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2071 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2072 | : MFF_N_IDS); | |
d01c980f | 2073 | |
c2d936a4 BP |
2074 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2075 | } | |
7bcb1506 | 2076 | |
cab50449 | 2077 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2078 | parse_SET_L4_SRC_PORT(char *arg, struct ofpbuf *ofpacts, |
2079 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2080 | { | |
2081 | return str_to_u16(arg, "source port", | |
2082 | &ofpact_put_SET_L4_SRC_PORT(ofpacts)->port); | |
2083 | } | |
d01c980f | 2084 | |
cab50449 | 2085 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2086 | parse_SET_L4_DST_PORT(char *arg, struct ofpbuf *ofpacts, |
2087 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2088 | { | |
2089 | return str_to_u16(arg, "destination port", | |
2090 | &ofpact_put_SET_L4_DST_PORT(ofpacts)->port); | |
2091 | } | |
d01c980f | 2092 | |
c2d936a4 BP |
2093 | static void |
2094 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, struct ds *s) | |
2095 | { | |
b1c5bf1f | 2096 | ds_put_format(s, "%smod_tp_src:%s%d", colors.param, colors.end, a->port); |
c2d936a4 | 2097 | } |
d01c980f | 2098 | |
c2d936a4 BP |
2099 | static void |
2100 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, struct ds *s) | |
2101 | { | |
b1c5bf1f | 2102 | ds_put_format(s, "%smod_tp_dst:%s%d", colors.param, colors.end, a->port); |
c2d936a4 BP |
2103 | } |
2104 | \f | |
73178f20 BP |
2105 | /* Action structure for OFPAT_COPY_FIELD. */ |
2106 | struct ofp15_action_copy_field { | |
2107 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2108 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2109 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2110 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2111 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2112 | uint8_t pad[2]; |
f13cdd73 BP |
2113 | /* Followed by: |
2114 | * - OXM header for source field. | |
2115 | * - OXM header for destination field. | |
2116 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2117 | * The "pad2" member is the beginning of the above. */ |
2118 | uint8_t pad2[4]; | |
73178f20 | 2119 | }; |
f13cdd73 | 2120 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2121 | |
914624f8 BP |
2122 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2123 | struct onf_action_copy_field { | |
2124 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2125 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2126 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2127 | ovs_be16 exp_type; /* 3200. */ | |
2128 | uint8_t pad[2]; /* Not used. */ | |
2129 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2130 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2131 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2132 | uint8_t pad2[2]; /* Not used. */ | |
2133 | /* Followed by: | |
2134 | * - OXM header for source field. | |
2135 | * - OXM header for destination field. | |
2136 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2137 | * The "pad3" member is the beginning of the above. */ | |
2138 | uint8_t pad3[4]; /* Not used. */ | |
2139 | }; | |
2140 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2141 | ||
c2d936a4 BP |
2142 | /* Action structure for NXAST_REG_MOVE. |
2143 | * | |
2144 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2145 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2146 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2147 | * the next most significant bit, and so on. | |
2148 | * | |
2149 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2150 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2151 | * matching; it uses the actual value of a field.) | |
2152 | * | |
2153 | * The following nxm_header values are potentially acceptable as 'src': | |
2154 | * | |
2155 | * - NXM_OF_IN_PORT | |
2156 | * - NXM_OF_ETH_DST | |
2157 | * - NXM_OF_ETH_SRC | |
2158 | * - NXM_OF_ETH_TYPE | |
2159 | * - NXM_OF_VLAN_TCI | |
2160 | * - NXM_OF_IP_TOS | |
2161 | * - NXM_OF_IP_PROTO | |
2162 | * - NXM_OF_IP_SRC | |
2163 | * - NXM_OF_IP_DST | |
2164 | * - NXM_OF_TCP_SRC | |
2165 | * - NXM_OF_TCP_DST | |
2166 | * - NXM_OF_UDP_SRC | |
2167 | * - NXM_OF_UDP_DST | |
2168 | * - NXM_OF_ICMP_TYPE | |
2169 | * - NXM_OF_ICMP_CODE | |
2170 | * - NXM_OF_ARP_OP | |
2171 | * - NXM_OF_ARP_SPA | |
2172 | * - NXM_OF_ARP_TPA | |
2173 | * - NXM_NX_TUN_ID | |
2174 | * - NXM_NX_ARP_SHA | |
2175 | * - NXM_NX_ARP_THA | |
2176 | * - NXM_NX_ICMPV6_TYPE | |
2177 | * - NXM_NX_ICMPV6_CODE | |
2178 | * - NXM_NX_ND_SLL | |
2179 | * - NXM_NX_ND_TLL | |
2180 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2181 | * - NXM_NX_PKT_MARK | |
2182 | * - NXM_NX_TUN_IPV4_SRC | |
2183 | * - NXM_NX_TUN_IPV4_DST | |
2184 | * | |
2185 | * The following nxm_header values are potentially acceptable as 'dst': | |
2186 | * | |
2187 | * - NXM_OF_ETH_DST | |
2188 | * - NXM_OF_ETH_SRC | |
2189 | * - NXM_OF_IP_TOS | |
2190 | * - NXM_OF_IP_SRC | |
2191 | * - NXM_OF_IP_DST | |
2192 | * - NXM_OF_TCP_SRC | |
2193 | * - NXM_OF_TCP_DST | |
2194 | * - NXM_OF_UDP_SRC | |
2195 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2196 | * - NXM_OF_ICMP_TYPE |
2197 | * - NXM_OF_ICMP_CODE | |
2198 | * - NXM_NX_ICMPV6_TYPE | |
2199 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2200 | * - NXM_NX_ARP_SHA |
2201 | * - NXM_NX_ARP_THA | |
2202 | * - NXM_OF_ARP_OP | |
2203 | * - NXM_OF_ARP_SPA | |
2204 | * - NXM_OF_ARP_TPA | |
2205 | * Modifying any of the above fields changes the corresponding packet | |
2206 | * header. | |
2207 | * | |
2208 | * - NXM_OF_IN_PORT | |
2209 | * | |
2210 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2211 | * | |
2212 | * - NXM_NX_PKT_MARK | |
2213 | * | |
2214 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2215 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2216 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2217 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2218 | * to the field's new value (with the CFI bit masked out). | |
2219 | * | |
2220 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2221 | * any of these values modifies the corresponding tunnel header field used | |
2222 | * for the packet's next tunnel encapsulation, if allowed by the | |
2223 | * configuration of the output tunnel port. | |
2224 | * | |
2225 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2226 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2227 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2228 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2229 | * | |
2230 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2231 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2232 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2233 | * | |
2234 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2235 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2236 | * temporary buffer copied to 'dst'. | |
2237 | */ | |
2238 | struct nx_action_reg_move { | |
2239 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2240 | ovs_be16 len; /* Length is 24. */ | |
2241 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2242 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2243 | ovs_be16 n_bits; /* Number of bits. */ | |
2244 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2245 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2246 | /* Followed by: |
2247 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2248 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2249 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2250 | }; |
bad8a439 | 2251 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2252 | |
73178f20 | 2253 | static enum ofperr |
914624f8 BP |
2254 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2255 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
2256 | struct ofpbuf *ofpacts) | |
73178f20 | 2257 | { |
0a2869d5 | 2258 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
914624f8 BP |
2259 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2260 | move->src.ofs = ntohs(src_offset); | |
2261 | move->src.n_bits = ntohs(n_bits); | |
2262 | move->dst.ofs = ntohs(dst_offset); | |
2263 | move->dst.n_bits = ntohs(n_bits); | |
2264 | ||
0a2869d5 | 2265 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2266 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 BP |
2267 | |
2268 | enum ofperr error = nx_pull_header(&b, &move->src.field, NULL); | |
f13cdd73 BP |
2269 | if (error) { |
2270 | return error; | |
2271 | } | |
2272 | error = nx_pull_header(&b, &move->dst.field, NULL); | |
2273 | if (error) { | |
2274 | return error; | |
2275 | } | |
f13cdd73 | 2276 | |
6fd6ed71 | 2277 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2278 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2279 | } | |
2280 | ||
73178f20 BP |
2281 | return nxm_reg_move_check(move, NULL); |
2282 | } | |
2283 | ||
914624f8 BP |
2284 | static enum ofperr |
2285 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2286 | enum ofp_version ofp_version OVS_UNUSED, |
914624f8 BP |
2287 | struct ofpbuf *ofpacts) |
2288 | { | |
2289 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2290 | oacf->n_bits, oacf, oacf->len, | |
2291 | OBJECT_OFFSETOF(oacf, pad2), ofpacts); | |
2292 | } | |
2293 | ||
2294 | static enum ofperr | |
2295 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2296 | enum ofp_version ofp_version OVS_UNUSED, |
914624f8 BP |
2297 | struct ofpbuf *ofpacts) |
2298 | { | |
2299 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2300 | oacf->n_bits, oacf, oacf->len, | |
2301 | OBJECT_OFFSETOF(oacf, pad3), ofpacts); | |
2302 | } | |
2303 | ||
c2d936a4 BP |
2304 | static enum ofperr |
2305 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2306 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
2307 | struct ofpbuf *ofpacts) |
2308 | { | |
0a2869d5 | 2309 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
914624f8 | 2310 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2311 | move->src.ofs = ntohs(narm->src_ofs); |
2312 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2313 | move->dst.ofs = ntohs(narm->dst_ofs); |
2314 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2315 | |
0a2869d5 | 2316 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2317 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 BP |
2318 | |
2319 | enum ofperr error = nx_pull_header(&b, &move->src.field, NULL); | |
bad8a439 BP |
2320 | if (error) { |
2321 | return error; | |
2322 | } | |
2323 | error = nx_pull_header(&b, &move->dst.field, NULL); | |
2324 | if (error) { | |
2325 | return error; | |
2326 | } | |
6fd6ed71 | 2327 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2328 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2329 | } | |
2330 | ||
c2d936a4 BP |
2331 | return nxm_reg_move_check(move, NULL); |
2332 | } | |
d01c980f | 2333 | |
c2d936a4 BP |
2334 | static void |
2335 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2336 | enum ofp_version ofp_version, struct ofpbuf *out) |
2337 | { | |
914624f8 BP |
2338 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2339 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2340 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2341 | * probe for support. Until we have that ability, we currently prefer | |
2342 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2343 | * versions. */ | |
6fd6ed71 | 2344 | size_t start_ofs = out->size; |
73178f20 | 2345 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2346 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2347 | copy->n_bits = htons(move->dst.n_bits); |
2348 | copy->src_offset = htons(move->src.ofs); | |
2349 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2350 | out->size = out->size - sizeof copy->pad2; |
f13cdd73 BP |
2351 | nx_put_header(out, move->src.field->id, ofp_version, false); |
2352 | nx_put_header(out, move->dst.field->id, ofp_version, false); | |
914624f8 BP |
2353 | } else if (ofp_version == OFP13_VERSION |
2354 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2355 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
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->pad3; |
914624f8 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); | |
73178f20 | 2362 | } else { |
bad8a439 | 2363 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2364 | narm->n_bits = htons(move->dst.n_bits); |
2365 | narm->src_ofs = htons(move->src.ofs); | |
2366 | narm->dst_ofs = htons(move->dst.ofs); | |
bad8a439 BP |
2367 | nx_put_header(out, move->src.field->id, 0, false); |
2368 | nx_put_header(out, move->dst.field->id, 0, false); | |
73178f20 | 2369 | } |
bad8a439 | 2370 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2371 | } |
e9536ecb | 2372 | |
cab50449 | 2373 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2374 | parse_REG_MOVE(const char *arg, struct ofpbuf *ofpacts, |
2375 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
2376 | { | |
2377 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); | |
2378 | const char *full_arg = arg; | |
2379 | char *error; | |
097d4939 | 2380 | |
c2d936a4 BP |
2381 | error = mf_parse_subfield__(&move->src, &arg); |
2382 | if (error) { | |
2383 | return error; | |
2384 | } | |
2385 | if (strncmp(arg, "->", 2)) { | |
2386 | return xasprintf("%s: missing `->' following source", full_arg); | |
2387 | } | |
2388 | arg += 2; | |
2389 | error = mf_parse_subfield(&move->dst, arg); | |
2390 | if (error) { | |
2391 | return error; | |
2392 | } | |
097d4939 | 2393 | |
c2d936a4 BP |
2394 | if (move->src.n_bits != move->dst.n_bits) { |
2395 | return xasprintf("%s: source field is %d bits wide but destination is " | |
2396 | "%d bits wide", full_arg, | |
2397 | move->src.n_bits, move->dst.n_bits); | |
2398 | } | |
2399 | return NULL; | |
2400 | } | |
0f3f3c3d | 2401 | |
c2d936a4 BP |
2402 | static void |
2403 | format_REG_MOVE(const struct ofpact_reg_move *a, struct ds *s) | |
2404 | { | |
2405 | nxm_format_reg_move(a, s); | |
2406 | } | |
2407 | \f | |
7eb4b1f1 BP |
2408 | /* Action structure for OFPAT12_SET_FIELD. */ |
2409 | struct ofp12_action_set_field { | |
2410 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2411 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2412 | ||
2413 | /* Followed by: | |
2414 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2415 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2416 | * | |
2417 | * The "pad" member is the beginning of the above. */ | |
2418 | uint8_t pad[4]; | |
2419 | }; | |
2420 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2421 | ||
c2d936a4 BP |
2422 | /* Action structure for NXAST_REG_LOAD. |
2423 | * | |
2424 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2425 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2426 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2427 | * bit, and so on. | |
2428 | * | |
2429 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2430 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2431 | * loading them. | |
2432 | * | |
2433 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2434 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2435 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2436 | * also stored as one less than its true value: | |
2437 | * | |
2438 | * 15 6 5 0 | |
2439 | * +------------------------------+------------------+ | |
2440 | * | ofs | n_bits - 1 | | |
2441 | * +------------------------------+------------------+ | |
2442 | * | |
2443 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2444 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2445 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2446 | * OFPBAC_BAD_ARGUMENT. | |
2447 | */ | |
2448 | struct nx_action_reg_load { | |
2449 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2450 | ovs_be16 len; /* Length is 24. */ | |
2451 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2452 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2453 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2454 | ovs_be32 dst; /* Destination register. */ | |
2455 | ovs_be64 value; /* Immediate value. */ | |
2456 | }; | |
2457 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2458 | |
aad28f47 BP |
2459 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2460 | * followed by: | |
bad8a439 | 2461 | * |
aad28f47 BP |
2462 | * - An NXM/OXM header, value, and optionally a mask. |
2463 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2464 | * | |
2465 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2466 | |
c2d936a4 | 2467 | static enum ofperr |
7eb4b1f1 BP |
2468 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
2469 | bool may_mask, struct ofpbuf *ofpacts) | |
7fdb60a7 | 2470 | { |
0a2869d5 | 2471 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2472 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2473 | |
128684a6 JR |
2474 | union mf_value value, mask; |
2475 | const struct mf_field *field; | |
2476 | enum ofperr error = nx_pull_entry(&b, &field, &value, | |
2477 | may_mask ? &mask : NULL); | |
178742f9 | 2478 | if (error) { |
178742f9 BP |
2479 | return (error == OFPERR_OFPBMC_BAD_MASK |
2480 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2481 | : error); | |
c2d936a4 | 2482 | } |
7eb4b1f1 | 2483 | if (!may_mask) { |
128684a6 | 2484 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2485 | } |
178742f9 | 2486 | |
6fd6ed71 | 2487 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2488 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2489 | } | |
7fdb60a7 | 2490 | |
178742f9 BP |
2491 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2492 | * Set-Field. */ | |
128684a6 | 2493 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2494 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2495 | } |
178742f9 | 2496 | |
c2d936a4 | 2497 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2498 | if (!field->writable) { |
178742f9 | 2499 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2500 | field->name); |
c2d936a4 BP |
2501 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2502 | } | |
c2d936a4 | 2503 | |
d3cb080e | 2504 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2505 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2506 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2507 | if (!mf_is_value_valid(field, &value) |
2508 | || (field->id == MFF_VLAN_VID | |
2509 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2510 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2511 | struct ds ds = DS_EMPTY_INITIALIZER; |
128684a6 | 2512 | mf_format(field, &value, NULL, &ds); |
c2d936a4 | 2513 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2514 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2515 | ds_destroy(&ds); |
2516 | ||
2517 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2518 | } |
128684a6 JR |
2519 | |
2520 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2521 | return 0; |
7fdb60a7 SH |
2522 | } |
2523 | ||
7eb4b1f1 BP |
2524 | static enum ofperr |
2525 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2526 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2527 | struct ofpbuf *ofpacts) |
2528 | { | |
2529 | return decode_ofpat_set_field(oasf, false, ofpacts); | |
2530 | } | |
2531 | ||
2532 | static enum ofperr | |
2533 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2534 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2535 | struct ofpbuf *ofpacts) |
2536 | { | |
2537 | return decode_ofpat_set_field(oasf, true, ofpacts); | |
2538 | } | |
2539 | ||
2540 | static enum ofperr | |
2541 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2542 | enum ofp_version ofp_version OVS_UNUSED, |
7eb4b1f1 BP |
2543 | struct ofpbuf *out) |
2544 | { | |
7eb4b1f1 BP |
2545 | struct mf_subfield dst; |
2546 | enum ofperr error; | |
2547 | ||
7eb4b1f1 BP |
2548 | dst.field = mf_from_nxm_header(ntohl(narl->dst)); |
2549 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); | |
2550 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
2551 | error = mf_check_dst(&dst, NULL); | |
2552 | if (error) { | |
2553 | return error; | |
2554 | } | |
2555 | ||
2556 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2557 | * narl->value. */ | |
2558 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2559 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2560 | } | |
2561 | ||
128684a6 JR |
2562 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2563 | NULL); | |
7eb4b1f1 | 2564 | bitwise_put(ntohll(narl->value), |
128684a6 | 2565 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2566 | dst.n_bits); |
2567 | bitwise_put(UINT64_MAX, | |
128684a6 | 2568 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2569 | dst.n_bits); |
7eb4b1f1 BP |
2570 | return 0; |
2571 | } | |
2572 | ||
bad8a439 | 2573 | static enum ofperr |
aad28f47 | 2574 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
f3cd3ac7 | 2575 | enum ofp_version ofp_version OVS_UNUSED, |
bad8a439 BP |
2576 | struct ofpbuf *out) |
2577 | { | |
aad28f47 BP |
2578 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2579 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2580 | |
128684a6 JR |
2581 | union mf_value value, mask; |
2582 | const struct mf_field *field; | |
2583 | enum ofperr error = nx_pull_entry(&b, &field, &value, &mask); | |
bad8a439 BP |
2584 | if (error) { |
2585 | return error; | |
2586 | } | |
6fd6ed71 | 2587 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2588 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2589 | } | |
2590 | ||
128684a6 JR |
2591 | if (!field->writable) { |
2592 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2593 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2594 | } | |
128684a6 JR |
2595 | |
2596 | /* Put value and mask. */ | |
2597 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2598 | return 0; |
2599 | } | |
2600 | ||
7fdb60a7 | 2601 | static void |
128684a6 JR |
2602 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2603 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2604 | { |
7eb4b1f1 | 2605 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2606 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2607 | size_t start_ofs = openflow->size; |
178742f9 | 2608 | union mf_value value; |
7fdb60a7 | 2609 | |
178742f9 | 2610 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2611 | |
7eb4b1f1 | 2612 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2613 | openflow->size = openflow->size - sizeof oasf->pad; |
178742f9 BP |
2614 | nx_put_entry(openflow, field, ofp_version, &value, NULL); |
2615 | pad_ofpat(openflow, start_ofs); | |
7fdb60a7 SH |
2616 | } |
2617 | ||
4b684612 BP |
2618 | static void |
2619 | put_reg_load(struct ofpbuf *openflow, | |
2620 | const struct mf_subfield *dst, uint64_t value) | |
2621 | { | |
2622 | ovs_assert(dst->n_bits <= 64); | |
2623 | ||
2624 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2625 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
2626 | narl->dst = htonl(mf_nxm_header(dst->field->id)); | |
2627 | narl->value = htonll(value); | |
2628 | } | |
2629 | ||
7eb4b1f1 BP |
2630 | static bool |
2631 | next_load_segment(const struct ofpact_set_field *sf, | |
2632 | struct mf_subfield *dst, uint64_t *value) | |
2633 | { | |
fa078489 BP |
2634 | int n_bits = sf->field->n_bits; |
2635 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2636 | int start = dst->ofs + dst->n_bits; |
2637 | ||
fa078489 | 2638 | if (start < n_bits) { |
7eb4b1f1 | 2639 | dst->field = sf->field; |
128684a6 JR |
2640 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2641 | n_bits); | |
fa078489 | 2642 | if (dst->ofs < n_bits) { |
128684a6 JR |
2643 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2644 | dst->ofs + 1, | |
fa078489 | 2645 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2646 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2647 | return true; |
2648 | } | |
2649 | } | |
2650 | return false; | |
2651 | } | |
178742f9 | 2652 | |
7eb4b1f1 | 2653 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2654 | static void |
c2d936a4 | 2655 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2656 | { |
bad8a439 | 2657 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2658 | * experimenter OXM or is variable length (or if it came in as |
2659 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2660 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2661 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2662 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 2663 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 2664 | size_t start_ofs = openflow->size; |
bad8a439 | 2665 | |
aad28f47 BP |
2666 | eah = put_NXAST_REG_LOAD2(openflow); |
2667 | openflow->size = openflow->size - sizeof eah->pad; | |
128684a6 JR |
2668 | nx_put_entry(openflow, sf->field->id, 0, sf->value, |
2669 | ofpact_set_field_mask(sf)); | |
bad8a439 BP |
2670 | pad_ofpat(openflow, start_ofs); |
2671 | } else { | |
2672 | struct mf_subfield dst; | |
2673 | uint64_t value; | |
7eb4b1f1 | 2674 | |
bad8a439 BP |
2675 | dst.ofs = dst.n_bits = 0; |
2676 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 2677 | put_reg_load(openflow, &dst, value); |
bad8a439 | 2678 | } |
7fdb60a7 SH |
2679 | } |
2680 | } | |
2681 | ||
7eb4b1f1 BP |
2682 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2683 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 2684 | * |
c2d936a4 BP |
2685 | * We check only meta-flow types that can appear within set field actions and |
2686 | * that have a mapping to compatible action types. These struct mf_field | |
2687 | * definitions have a defined OXM or NXM header value and specify the field as | |
2688 | * writable. */ | |
2689 | static void | |
2690 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
2691 | enum ofp_version ofp_version, | |
2692 | struct ofpbuf *out) | |
7fdb60a7 | 2693 | { |
c2d936a4 BP |
2694 | switch ((int) sf->field->id) { |
2695 | case MFF_VLAN_TCI: { | |
128684a6 | 2696 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
2697 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
2698 | uint16_t vid = vlan_tci_to_vid(tci); | |
2699 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
2700 | ||
2701 | if (ofp_version < OFP11_VERSION) { | |
2702 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
2703 | * | |
2704 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2705 | * If CFI=0, strip VLAN header, if any. | |
2706 | */ | |
2707 | if (cfi) { | |
2708 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2709 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
2710 | } else { | |
2711 | put_OFPAT10_STRIP_VLAN(out); | |
2712 | } | |
2713 | } else { | |
2714 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
2715 | * | |
2716 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2717 | * OpenFlow 1.1 set actions only apply if the packet | |
2718 | * already has VLAN tags. To be sure that is the case | |
2719 | * we have to push a VLAN header. As we do not support | |
2720 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
2721 | * header already exists. This may backfire, however, | |
2722 | * when we start supporting multiple layers of VLANs. | |
2723 | * If CFI=0, strip VLAN header, if any. | |
2724 | */ | |
2725 | if (cfi) { | |
2726 | /* Push a VLAN tag, if one was not seen at action validation | |
2727 | * time. */ | |
2728 | if (!sf->flow_has_vlan) { | |
2729 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
2730 | } | |
2731 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2732 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
2733 | } else { | |
2734 | /* If the flow did not match on vlan, we have no way of | |
2735 | * knowing if the vlan tag exists, so we must POP just to be | |
2736 | * sure. */ | |
2737 | put_OFPAT11_POP_VLAN(out); | |
2738 | } | |
2739 | } | |
2740 | break; | |
2741 | } | |
7fdb60a7 | 2742 | |
c2d936a4 | 2743 | case MFF_VLAN_VID: { |
128684a6 | 2744 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
2745 | if (ofp_version == OFP10_VERSION) { |
2746 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2747 | } else { | |
2748 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2749 | } | |
2750 | break; | |
2751 | } | |
2752 | ||
2753 | case MFF_VLAN_PCP: | |
2754 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 2755 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 2756 | } else { |
128684a6 | 2757 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
2758 | } |
2759 | break; | |
2760 | ||
2761 | case MFF_ETH_SRC: | |
128684a6 | 2762 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2763 | break; |
2764 | ||
2765 | case MFF_ETH_DST: | |
128684a6 | 2766 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2767 | break; |
2768 | ||
2769 | case MFF_IPV4_SRC: | |
128684a6 | 2770 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2771 | break; |
2772 | ||
2773 | case MFF_IPV4_DST: | |
128684a6 | 2774 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2775 | break; |
2776 | ||
2777 | case MFF_IP_DSCP: | |
128684a6 | 2778 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
2779 | break; |
2780 | ||
2781 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 2782 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
2783 | break; |
2784 | ||
4b684612 | 2785 | case MFF_IP_ECN: |
128684a6 | 2786 | put_OFPAT11_SET_NW_ECN(out, sf->value->u8); |
4b684612 BP |
2787 | break; |
2788 | ||
c2d936a4 BP |
2789 | case MFF_TCP_SRC: |
2790 | case MFF_UDP_SRC: | |
128684a6 | 2791 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
2792 | break; |
2793 | ||
2794 | case MFF_TCP_DST: | |
2795 | case MFF_UDP_DST: | |
128684a6 | 2796 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
2797 | break; |
2798 | ||
2799 | default: | |
2800 | set_field_to_nxast(sf, out); | |
2801 | break; | |
7fdb60a7 SH |
2802 | } |
2803 | } | |
2804 | ||
7eb4b1f1 BP |
2805 | static void |
2806 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
2807 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2808 | { | |
2809 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 2810 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
2811 | |
2812 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 2813 | out->size = out->size - sizeof oasf->pad; |
128684a6 JR |
2814 | nx_put_entry(out, sf->field->id, ofp_version, sf->value, |
2815 | ofpact_set_field_mask(sf)); | |
7eb4b1f1 BP |
2816 | pad_ofpat(out, start_ofs); |
2817 | } | |
2818 | ||
c2d936a4 BP |
2819 | static void |
2820 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
2821 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2822 | { | |
7eb4b1f1 | 2823 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
2824 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
2825 | * entirely). */ | |
7eb4b1f1 | 2826 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
2827 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
2828 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
2829 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
2830 | set_field_to_nxast(sf, out); |
2831 | } else if (ofp_version < OFP12_VERSION) { | |
2832 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 2833 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 2834 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
2835 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
2836 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
2837 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 2838 | } else { |
7eb4b1f1 BP |
2839 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
2840 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
2841 | * so encode it as reg_load. */ | |
2842 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
2843 | } |
2844 | } | |
2845 | ||
36b43aa6 JS |
2846 | /* Parses the input argument 'arg' into the key, value, and delimiter |
2847 | * components that are common across the reg_load and set_field action format. | |
2848 | * | |
2849 | * With an argument like "1->metadata", sets the following pointers to | |
2850 | * point within 'arg': | |
2851 | * key: "metadata" | |
2852 | * value: "1" | |
2853 | * delim: "->" | |
2854 | * | |
2855 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2856 | * error. The caller is responsible for freeing the returned string. */ | |
2857 | static char * OVS_WARN_UNUSED_RESULT | |
2858 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
2859 | { | |
2860 | char *value_end; | |
2861 | ||
2862 | *value = arg; | |
2863 | value_end = strstr(arg, "->"); | |
2864 | *key = value_end + strlen("->"); | |
2865 | if (delim) { | |
2866 | *delim = value_end; | |
2867 | } | |
2868 | ||
2869 | if (!value_end) { | |
2870 | return xasprintf("%s: missing `->'", arg); | |
2871 | } | |
2872 | if (strlen(value_end) <= strlen("->")) { | |
2873 | return xasprintf("%s: missing field name following `->'", arg); | |
2874 | } | |
2875 | ||
2876 | return NULL; | |
2877 | } | |
2878 | ||
c2d936a4 BP |
2879 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
2880 | * action to 'ofpacts'. | |
2881 | * | |
2882 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2883 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2884 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2885 | set_field_parse__(char *arg, struct ofpbuf *ofpacts, |
2886 | enum ofputil_protocol *usable_protocols) | |
7fdb60a7 | 2887 | { |
c2d936a4 BP |
2888 | char *value; |
2889 | char *delim; | |
2890 | char *key; | |
2891 | const struct mf_field *mf; | |
128684a6 | 2892 | union mf_value sf_value, sf_mask; |
c2d936a4 | 2893 | char *error; |
7fdb60a7 | 2894 | |
36b43aa6 JS |
2895 | error = set_field_split_str(arg, &key, &value, &delim); |
2896 | if (error) { | |
2897 | return error; | |
c2d936a4 | 2898 | } |
e3f8f887 | 2899 | |
c2d936a4 BP |
2900 | mf = mf_from_name(key); |
2901 | if (!mf) { | |
2902 | return xasprintf("%s is not a valid OXM field name", key); | |
2903 | } | |
2904 | if (!mf->writable) { | |
2905 | return xasprintf("%s is read-only", key); | |
2906 | } | |
128684a6 | 2907 | |
c2d936a4 | 2908 | delim[0] = '\0'; |
128684a6 | 2909 | error = mf_parse(mf, value, &sf_value, &sf_mask); |
7fdb60a7 SH |
2910 | if (error) { |
2911 | return error; | |
2912 | } | |
2913 | ||
128684a6 | 2914 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 2915 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
2916 | } |
2917 | ||
a4ce8b25 | 2918 | *usable_protocols &= mf->usable_protocols_exact; |
128684a6 JR |
2919 | |
2920 | ofpact_put_set_field(ofpacts, mf, &sf_value, &sf_mask); | |
c2d936a4 | 2921 | return NULL; |
7fdb60a7 SH |
2922 | } |
2923 | ||
c2d936a4 BP |
2924 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
2925 | * action to 'ofpacts'. | |
2926 | * | |
2927 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2928 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2929 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
2930 | parse_SET_FIELD(const char *arg, struct ofpbuf *ofpacts, |
2931 | enum ofputil_protocol *usable_protocols) | |
2932 | { | |
2933 | char *copy = xstrdup(arg); | |
2934 | char *error = set_field_parse__(copy, ofpacts, usable_protocols); | |
2935 | free(copy); | |
2936 | return error; | |
2937 | } | |
a359d5ad | 2938 | |
cab50449 | 2939 | static char * OVS_WARN_UNUSED_RESULT |
7eb4b1f1 BP |
2940 | parse_reg_load(char *arg, struct ofpbuf *ofpacts) |
2941 | { | |
7eb4b1f1 | 2942 | struct mf_subfield dst; |
36b43aa6 | 2943 | char *key, *value_str; |
81270993 | 2944 | union mf_value value; |
7eb4b1f1 BP |
2945 | char *error; |
2946 | ||
36b43aa6 JS |
2947 | error = set_field_split_str(arg, &key, &value_str, NULL); |
2948 | if (error) { | |
2949 | return error; | |
7eb4b1f1 | 2950 | } |
36b43aa6 JS |
2951 | |
2952 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
2953 | if (error) { |
2954 | return error; | |
2955 | } | |
2956 | ||
81270993 JS |
2957 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
2958 | &key)) { | |
2959 | return xasprintf("%s: cannot parse integer value", arg); | |
2960 | } | |
2961 | ||
2962 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
2963 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
2964 | struct ds ds; | |
2965 | ||
2966 | ds_init(&ds); | |
2967 | mf_format(dst.field, &value, NULL, &ds); | |
2968 | error = xasprintf("%s: value %s does not fit into %d bits", | |
2969 | arg, ds_cstr(&ds), dst.n_bits); | |
2970 | ds_destroy(&ds); | |
2971 | return error; | |
7eb4b1f1 BP |
2972 | } |
2973 | ||
128684a6 JR |
2974 | struct ofpact_set_field *sf = ofpact_put_reg_load(ofpacts, dst.field, NULL, |
2975 | NULL); | |
81270993 | 2976 | |
128684a6 JR |
2977 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
2978 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
2979 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
2980 | dst.n_bits); | |
7eb4b1f1 BP |
2981 | return NULL; |
2982 | } | |
2983 | ||
c2d936a4 BP |
2984 | static void |
2985 | format_SET_FIELD(const struct ofpact_set_field *a, struct ds *s) | |
2986 | { | |
7eb4b1f1 BP |
2987 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
2988 | struct mf_subfield dst; | |
2989 | uint64_t value; | |
2990 | ||
2991 | dst.ofs = dst.n_bits = 0; | |
2992 | while (next_load_segment(a, &dst, &value)) { | |
b1c5bf1f QM |
2993 | ds_put_format(s, "%sload:%s%#"PRIx64"%s->%s", |
2994 | colors.special, colors.end, value, | |
2995 | colors.special, colors.end); | |
7eb4b1f1 BP |
2996 | mf_format_subfield(&dst, s); |
2997 | ds_put_char(s, ','); | |
2998 | } | |
2999 | ds_chomp(s, ','); | |
3000 | } else { | |
b1c5bf1f | 3001 | ds_put_format(s, "%sset_field:%s", colors.special, colors.end); |
128684a6 | 3002 | mf_format(a->field, a->value, ofpact_set_field_mask(a), s); |
b1c5bf1f QM |
3003 | ds_put_format(s, "%s->%s%s", |
3004 | colors.special, colors.end, a->field->name); | |
7eb4b1f1 BP |
3005 | } |
3006 | } | |
3007 | ||
128684a6 JR |
3008 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
3009 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
3010 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
3011 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3012 | struct ofpact_set_field * | |
3013 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3014 | const void *value, const void *mask) | |
3015 | { | |
3016 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3017 | sf->field = field; | |
3018 | ||
3019 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3020 | * caller may fill in the value and mask itself. */ | |
3021 | if (value) { | |
3022 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3023 | sf = ofpacts->header; | |
3024 | memcpy(sf->value, value, field->n_bytes); | |
3025 | if (mask) { | |
3026 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3027 | } else { | |
3028 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3029 | } | |
3030 | } else { | |
3031 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3032 | sf = ofpacts->header; | |
3033 | } | |
3034 | /* Update length. */ | |
3035 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3036 | ||
3037 | return sf; | |
3038 | } | |
3039 | ||
7eb4b1f1 BP |
3040 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3041 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3042 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3043 | * that was the way that the action was expressed when it came into OVS or for | |
3044 | * backward compatibility. */ | |
3045 | struct ofpact_set_field * | |
128684a6 JR |
3046 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3047 | const void *value, const void *mask) | |
7eb4b1f1 | 3048 | { |
128684a6 JR |
3049 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3050 | mask); | |
7eb4b1f1 | 3051 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3052 | |
7eb4b1f1 | 3053 | return sf; |
c2d936a4 | 3054 | } |
128684a6 JR |
3055 | |
3056 | struct ofpact_set_field * | |
3057 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3058 | const void *value, const void *mask) | |
3059 | { | |
3060 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3061 | mask); | |
3062 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3063 | ||
3064 | return sf; | |
3065 | } | |
3066 | ||
c2d936a4 BP |
3067 | \f |
3068 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3069 | * | |
3070 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3071 | * top of the stack. | |
3072 | */ | |
3073 | struct nx_action_stack { | |
3074 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3075 | ovs_be16 len; /* Length is 16. */ | |
3076 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3077 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3078 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3079 | /* Followed by: |
3080 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3081 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3082 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3083 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3084 | }; |
c2d936a4 | 3085 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3086 | |
bad8a439 | 3087 | static enum ofperr |
c2d936a4 BP |
3088 | decode_stack_action(const struct nx_action_stack *nasp, |
3089 | struct ofpact_stack *stack_action) | |
a359d5ad | 3090 | { |
c2d936a4 | 3091 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3092 | |
0a2869d5 | 3093 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3094 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
0a2869d5 BP |
3095 | enum ofperr error = nx_pull_header(&b, &stack_action->subfield.field, |
3096 | NULL); | |
bad8a439 BP |
3097 | if (error) { |
3098 | return error; | |
3099 | } | |
6fd6ed71 | 3100 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3101 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3102 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3103 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3104 | } | |
3105 | ||
3106 | return 0; | |
a359d5ad IY |
3107 | } |
3108 | ||
c2d936a4 BP |
3109 | static enum ofperr |
3110 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 JS |
3111 | enum ofp_version ofp_version OVS_UNUSED, |
3112 | struct ofpbuf *ofpacts) | |
a359d5ad | 3113 | { |
c2d936a4 | 3114 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
bad8a439 BP |
3115 | enum ofperr error = decode_stack_action(nasp, push); |
3116 | return error ? error : nxm_stack_push_check(push, NULL); | |
a359d5ad IY |
3117 | } |
3118 | ||
c2d936a4 BP |
3119 | static enum ofperr |
3120 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3121 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 3122 | struct ofpbuf *ofpacts) |
084c53de | 3123 | { |
c2d936a4 | 3124 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
bad8a439 BP |
3125 | enum ofperr error = decode_stack_action(nasp, pop); |
3126 | return error ? error : nxm_stack_pop_check(pop, NULL); | |
084c53de BP |
3127 | } |
3128 | ||
c2d936a4 BP |
3129 | static void |
3130 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3131 | struct nx_action_stack *nasp) | |
c0621c39 | 3132 | { |
bad8a439 BP |
3133 | struct ofpbuf b; |
3134 | ovs_be16 n_bits; | |
3135 | ||
c2d936a4 | 3136 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3137 | |
3138 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3139 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
3140 | nx_put_header(&b, stack_action->subfield.field->id, 0, false); | |
3141 | n_bits = htons(stack_action->subfield.n_bits); | |
3142 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3143 | } |
3144 | ||
c2d936a4 BP |
3145 | static void |
3146 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3147 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3148 | { | |
3149 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3150 | } | |
8e97815e | 3151 | |
c2d936a4 BP |
3152 | static void |
3153 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3154 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3155 | { |
c2d936a4 BP |
3156 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3157 | } | |
8e97815e | 3158 | |
cab50449 | 3159 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3160 | parse_STACK_PUSH(char *arg, struct ofpbuf *ofpacts, |
3161 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3162 | { | |
3163 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(ofpacts), arg); | |
3164 | } | |
8e97815e | 3165 | |
cab50449 | 3166 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3167 | parse_STACK_POP(char *arg, struct ofpbuf *ofpacts, |
3168 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3169 | { | |
3170 | return nxm_parse_stack_action(ofpact_put_STACK_POP(ofpacts), arg); | |
8e97815e BP |
3171 | } |
3172 | ||
c2d936a4 BP |
3173 | static void |
3174 | format_STACK_PUSH(const struct ofpact_stack *a, struct ds *s) | |
8e97815e | 3175 | { |
c2d936a4 BP |
3176 | nxm_format_stack_push(a, s); |
3177 | } | |
8e97815e | 3178 | |
c2d936a4 BP |
3179 | static void |
3180 | format_STACK_POP(const struct ofpact_stack *a, struct ds *s) | |
3181 | { | |
3182 | nxm_format_stack_pop(a, s); | |
3183 | } | |
3184 | \f | |
3185 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3186 | * | |
3187 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3188 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3189 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3190 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3191 | * | |
3192 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3193 | * sent only to controllers with id 0.) | |
3194 | */ | |
3195 | struct nx_action_cnt_ids { | |
3196 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3197 | ovs_be16 len; /* Length including slaves. */ | |
3198 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3199 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3200 | ||
3201 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3202 | uint8_t zeros[4]; /* Must be zero. */ | |
3203 | ||
3204 | /* Followed by 1 or more controller ids. | |
3205 | * | |
3206 | * uint16_t cnt_ids[]; // Controller ids. | |
3207 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3208 | */ | |
3209 | }; | |
3210 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3211 | ||
3212 | static enum ofperr | |
3213 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3214 | { | |
3215 | uint16_t id = 0; | |
3216 | struct ofpact_cnt_ids *ids; | |
3217 | enum ofperr error = 0; | |
3218 | ||
3219 | ids = ofpact_put_DEC_TTL(out); | |
3220 | ids->n_controllers = 1; | |
3221 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3222 | ids = out->header; |
ce058104 | 3223 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3224 | return error; |
3225 | } | |
3226 | ||
3227 | static enum ofperr | |
3228 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3229 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3230 | struct ofpbuf *out) |
3231 | { | |
3232 | struct ofpact_cnt_ids *ids; | |
3233 | size_t ids_size; | |
3234 | int i; | |
3235 | ||
3236 | ids = ofpact_put_DEC_TTL(out); | |
3237 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3238 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3239 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3240 | ||
3241 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3242 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3243 | } |
c2d936a4 BP |
3244 | |
3245 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3246 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3247 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
3248 | "are required for %"PRIu16" controllers.", | |
3249 | ids_size, ids->n_controllers * sizeof(ovs_be16), | |
3250 | ids->n_controllers); | |
3251 | return OFPERR_OFPBAC_BAD_LEN; | |
3252 | } | |
3253 | ||
3254 | for (i = 0; i < ids->n_controllers; i++) { | |
3255 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3256 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3257 | ids = out->header; |
c2d936a4 BP |
3258 | } |
3259 | ||
ce058104 | 3260 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3261 | |
3262 | return 0; | |
8e97815e BP |
3263 | } |
3264 | ||
c2d936a4 BP |
3265 | static void |
3266 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3267 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3268 | { |
c2d936a4 BP |
3269 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3270 | || dec_ttl->n_controllers != 1 | |
3271 | || dec_ttl->cnt_ids[0] != 0) { | |
3272 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3273 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3274 | ovs_be16 *ids; | |
3275 | size_t i; | |
8e97815e | 3276 | |
c2d936a4 BP |
3277 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3278 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3279 | ||
3280 | ids = ofpbuf_put_zeros(out, ids_len); | |
3281 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3282 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3283 | } |
c2d936a4 BP |
3284 | } else { |
3285 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3286 | } |
8e97815e BP |
3287 | } |
3288 | ||
c2d936a4 BP |
3289 | static void |
3290 | parse_noargs_dec_ttl(struct ofpbuf *ofpacts) | |
d01c980f | 3291 | { |
c2d936a4 BP |
3292 | struct ofpact_cnt_ids *ids; |
3293 | uint16_t id = 0; | |
3294 | ||
3295 | ofpact_put_DEC_TTL(ofpacts); | |
3296 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3297 | ids = ofpacts->header; |
c2d936a4 | 3298 | ids->n_controllers++; |
ce058104 | 3299 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
d01c980f BP |
3300 | } |
3301 | ||
cab50449 | 3302 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3303 | parse_DEC_TTL(char *arg, struct ofpbuf *ofpacts, |
3304 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
d01c980f | 3305 | { |
c2d936a4 BP |
3306 | if (*arg == '\0') { |
3307 | parse_noargs_dec_ttl(ofpacts); | |
3308 | } else { | |
3309 | struct ofpact_cnt_ids *ids; | |
3310 | char *cntr; | |
3311 | ||
3312 | ids = ofpact_put_DEC_TTL(ofpacts); | |
3313 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3314 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3315 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3316 | uint16_t id = atoi(cntr); | |
3317 | ||
3318 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3319 | ids = ofpacts->header; |
c2d936a4 BP |
3320 | ids->n_controllers++; |
3321 | } | |
3322 | if (!ids->n_controllers) { | |
3323 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3324 | "id."); | |
3325 | } | |
ce058104 | 3326 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
c2d936a4 BP |
3327 | } |
3328 | return NULL; | |
d01c980f BP |
3329 | } |
3330 | ||
c2d936a4 BP |
3331 | static void |
3332 | format_DEC_TTL(const struct ofpact_cnt_ids *a, struct ds *s) | |
d01c980f | 3333 | { |
c2d936a4 | 3334 | size_t i; |
d01c980f | 3335 | |
b1c5bf1f | 3336 | ds_put_format(s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3337 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
b1c5bf1f | 3338 | ds_put_format(s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3339 | for (i = 0; i < a->n_controllers; i++) { |
3340 | if (i) { | |
3341 | ds_put_cstr(s, ","); | |
d01c980f | 3342 | } |
c2d936a4 BP |
3343 | ds_put_format(s, "%"PRIu16, a->cnt_ids[i]); |
3344 | } | |
b1c5bf1f | 3345 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3346 | } |
3347 | } | |
c2d936a4 BP |
3348 | \f |
3349 | /* Set MPLS label actions. */ | |
d01c980f BP |
3350 | |
3351 | static enum ofperr | |
f3cd3ac7 JS |
3352 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3353 | enum ofp_version ofp_version OVS_UNUSED, | |
3354 | struct ofpbuf *out) | |
d01c980f | 3355 | { |
c2d936a4 BP |
3356 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3357 | return 0; | |
3358 | } | |
d01c980f | 3359 | |
c2d936a4 BP |
3360 | static void |
3361 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3362 | enum ofp_version ofp_version, | |
3363 | struct ofpbuf *out) | |
3364 | { | |
3365 | if (ofp_version < OFP12_VERSION) { | |
3366 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3367 | } else { | |
128684a6 | 3368 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3369 | } |
c2d936a4 | 3370 | } |
d01c980f | 3371 | |
cab50449 | 3372 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3373 | parse_SET_MPLS_LABEL(char *arg, struct ofpbuf *ofpacts, |
3374 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3375 | { | |
3376 | struct ofpact_mpls_label *mpls_label = ofpact_put_SET_MPLS_LABEL(ofpacts); | |
3377 | if (*arg == '\0') { | |
3378 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3379 | } |
c2d936a4 BP |
3380 | |
3381 | mpls_label->label = htonl(atoi(arg)); | |
3382 | return NULL; | |
d01c980f BP |
3383 | } |
3384 | ||
3385 | static void | |
c2d936a4 | 3386 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, struct ds *s) |
d01c980f | 3387 | { |
b1c5bf1f QM |
3388 | ds_put_format(s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
3389 | colors.paren, colors.end, ntohl(a->label), | |
3390 | colors.paren, colors.end); | |
d01c980f | 3391 | } |
c2d936a4 BP |
3392 | \f |
3393 | /* Set MPLS TC actions. */ | |
d01c980f | 3394 | |
c2d936a4 | 3395 | static enum ofperr |
f3cd3ac7 JS |
3396 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3397 | enum ofp_version ofp_version OVS_UNUSED, | |
3398 | struct ofpbuf *out) | |
d01c980f | 3399 | { |
c2d936a4 BP |
3400 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3401 | return 0; | |
3402 | } | |
d01c980f | 3403 | |
c2d936a4 BP |
3404 | static void |
3405 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3406 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3407 | { | |
3408 | if (ofp_version < OFP12_VERSION) { | |
3409 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3410 | } else { | |
128684a6 | 3411 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3412 | } |
c2d936a4 | 3413 | } |
8f2cded4 | 3414 | |
cab50449 | 3415 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3416 | parse_SET_MPLS_TC(char *arg, struct ofpbuf *ofpacts, |
3417 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3418 | { | |
3419 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(ofpacts); | |
d01c980f | 3420 | |
c2d936a4 BP |
3421 | if (*arg == '\0') { |
3422 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3423 | } |
3424 | ||
c2d936a4 BP |
3425 | mpls_tc->tc = atoi(arg); |
3426 | return NULL; | |
3427 | } | |
d01c980f | 3428 | |
c2d936a4 BP |
3429 | static void |
3430 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, struct ds *s) | |
3431 | { | |
b1c5bf1f QM |
3432 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3433 | colors.paren, colors.end, a->tc, | |
3434 | colors.paren, colors.end); | |
c2d936a4 BP |
3435 | } |
3436 | \f | |
3437 | /* Set MPLS TTL actions. */ | |
d01c980f | 3438 | |
c2d936a4 | 3439 | static enum ofperr |
f3cd3ac7 JS |
3440 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3441 | enum ofp_version ofp_version OVS_UNUSED, | |
3442 | struct ofpbuf *out) | |
c2d936a4 BP |
3443 | { |
3444 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3445 | return 0; | |
3446 | } | |
638a19b0 | 3447 | |
c2d936a4 BP |
3448 | static void |
3449 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3450 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3451 | { | |
3452 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3453 | } | |
638a19b0 | 3454 | |
c2d936a4 BP |
3455 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
3456 | * action to 'ofpacts'. | |
3457 | * | |
3458 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3459 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3460 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3461 | parse_SET_MPLS_TTL(char *arg, struct ofpbuf *ofpacts, |
3462 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3463 | { | |
3464 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(ofpacts); | |
d01c980f | 3465 | |
c2d936a4 BP |
3466 | if (*arg == '\0') { |
3467 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3468 | } |
7fdb60a7 | 3469 | |
c2d936a4 BP |
3470 | mpls_ttl->ttl = atoi(arg); |
3471 | return NULL; | |
3472 | } | |
4cceacb9 | 3473 | |
c2d936a4 BP |
3474 | static void |
3475 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, struct ds *s) | |
3476 | { | |
b1c5bf1f QM |
3477 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3478 | colors.paren, colors.end, a->ttl, | |
3479 | colors.paren, colors.end); | |
c2d936a4 BP |
3480 | } |
3481 | \f | |
3482 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3483 | |
c2d936a4 BP |
3484 | static enum ofperr |
3485 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3486 | { | |
3487 | ofpact_put_DEC_MPLS_TTL(out); | |
3488 | return 0; | |
3489 | } | |
8dd54666 | 3490 | |
c2d936a4 BP |
3491 | static void |
3492 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3493 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3494 | { | |
3495 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3496 | } | |
3497 | ||
cab50449 | 3498 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3499 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
3500 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3501 | { | |
3502 | ofpact_put_DEC_MPLS_TTL(ofpacts); | |
3503 | return NULL; | |
3504 | } | |
3505 | ||
3506 | static void | |
3507 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
3508 | { | |
b1c5bf1f | 3509 | ds_put_format(s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 BP |
3510 | } |
3511 | \f | |
3512 | /* Push MPLS label action. */ | |
3513 | ||
3514 | static enum ofperr | |
f3cd3ac7 JS |
3515 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3516 | enum ofp_version ofp_version OVS_UNUSED, | |
3517 | struct ofpbuf *out) | |
c2d936a4 BP |
3518 | { |
3519 | struct ofpact_push_mpls *oam; | |
3520 | ||
3521 | if (!eth_type_mpls(ethertype)) { | |
3522 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3523 | } |
c2d936a4 BP |
3524 | oam = ofpact_put_PUSH_MPLS(out); |
3525 | oam->ethertype = ethertype; | |
d01c980f | 3526 | |
c2d936a4 BP |
3527 | return 0; |
3528 | } | |
3529 | ||
3530 | static void | |
3531 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3532 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3533 | { | |
3534 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3535 | } | |
3536 | ||
cab50449 | 3537 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3538 | parse_PUSH_MPLS(char *arg, struct ofpbuf *ofpacts, |
3539 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3540 | { | |
3541 | uint16_t ethertype; | |
3542 | char *error; | |
3543 | ||
3544 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3545 | if (!error) { | |
3546 | ofpact_put_PUSH_MPLS(ofpacts)->ethertype = htons(ethertype); | |
d01c980f BP |
3547 | } |
3548 | return error; | |
3549 | } | |
c2d936a4 BP |
3550 | |
3551 | static void | |
3552 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, struct ds *s) | |
3553 | { | |
b1c5bf1f QM |
3554 | ds_put_format(s, "%spush_mpls:%s0x%04"PRIx16, |
3555 | colors.param, colors.end, ntohs(a->ethertype)); | |
c2d936a4 | 3556 | } |
d01c980f | 3557 | \f |
c2d936a4 BP |
3558 | /* Pop MPLS label action. */ |
3559 | ||
3560 | static enum ofperr | |
f3cd3ac7 JS |
3561 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3562 | enum ofp_version ofp_version OVS_UNUSED, | |
3563 | struct ofpbuf *out) | |
57ad4e9e | 3564 | { |
c2d936a4 BP |
3565 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3566 | return 0; | |
3567 | } | |
57ad4e9e | 3568 | |
c2d936a4 BP |
3569 | static void |
3570 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
3571 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3572 | { | |
3573 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
3574 | } | |
3575 | ||
cab50449 | 3576 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3577 | parse_POP_MPLS(char *arg, struct ofpbuf *ofpacts, |
3578 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3579 | { | |
3580 | uint16_t ethertype; | |
3581 | char *error; | |
3582 | ||
3583 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
3584 | if (!error) { | |
3585 | ofpact_put_POP_MPLS(ofpacts)->ethertype = htons(ethertype); | |
57ad4e9e | 3586 | } |
c2d936a4 | 3587 | return error; |
57ad4e9e BP |
3588 | } |
3589 | ||
ba2fe8e9 | 3590 | static void |
c2d936a4 | 3591 | format_POP_MPLS(const struct ofpact_pop_mpls *a, struct ds *s) |
ba2fe8e9 | 3592 | { |
b1c5bf1f QM |
3593 | ds_put_format(s, "%spop_mpls:%s0x%04"PRIx16, |
3594 | colors.param, colors.end, ntohs(a->ethertype)); | |
ba2fe8e9 | 3595 | } |
c2d936a4 BP |
3596 | \f |
3597 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 3598 | |
f25d0cf3 | 3599 | static enum ofperr |
f3cd3ac7 JS |
3600 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
3601 | enum ofp_version ofp_version OVS_UNUSED, | |
3602 | struct ofpbuf *out) | |
f25d0cf3 | 3603 | { |
c2d936a4 BP |
3604 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
3605 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
3606 | tunnel->tun_id = tun_id; | |
3607 | return 0; | |
3608 | } | |
f25d0cf3 | 3609 | |
c2d936a4 | 3610 | static enum ofperr |
f3cd3ac7 JS |
3611 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
3612 | enum ofp_version ofp_version OVS_UNUSED, | |
3613 | struct ofpbuf *out) | |
c2d936a4 BP |
3614 | { |
3615 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
3616 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
3617 | tunnel->tun_id = tun_id; | |
3618 | return 0; | |
3619 | } | |
f25d0cf3 | 3620 | |
c2d936a4 BP |
3621 | static void |
3622 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
3623 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3624 | { | |
3625 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 3626 | |
c2d936a4 BP |
3627 | if (ofp_version < OFP12_VERSION) { |
3628 | if (tun_id <= UINT32_MAX | |
3629 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
3630 | put_NXAST_SET_TUNNEL(out, tun_id); | |
3631 | } else { | |
3632 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 3633 | } |
c2d936a4 | 3634 | } else { |
128684a6 | 3635 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
3636 | } |
3637 | } | |
f25d0cf3 | 3638 | |
cab50449 | 3639 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3640 | parse_set_tunnel(char *arg, struct ofpbuf *ofpacts, |
3641 | enum ofp_raw_action_type raw) | |
3642 | { | |
3643 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 3644 | |
c2d936a4 BP |
3645 | tunnel = ofpact_put_SET_TUNNEL(ofpacts); |
3646 | tunnel->ofpact.raw = raw; | |
3647 | return str_to_u64(arg, &tunnel->tun_id); | |
3648 | } | |
8621547c | 3649 | |
cab50449 | 3650 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3651 | parse_SET_TUNNEL(char *arg, struct ofpbuf *ofpacts, |
3652 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3653 | { | |
3654 | return parse_set_tunnel(arg, ofpacts, NXAST_RAW_SET_TUNNEL); | |
3655 | } | |
8621547c | 3656 | |
c2d936a4 BP |
3657 | static void |
3658 | format_SET_TUNNEL(const struct ofpact_tunnel *a, struct ds *s) | |
3659 | { | |
b1c5bf1f | 3660 | ds_put_format(s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
3661 | (a->tun_id > UINT32_MAX |
3662 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 3663 | colors.end, a->tun_id); |
c2d936a4 BP |
3664 | } |
3665 | \f | |
3666 | /* Set queue action. */ | |
8621547c | 3667 | |
c2d936a4 | 3668 | static enum ofperr |
f3cd3ac7 JS |
3669 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
3670 | enum ofp_version ofp_version OVS_UNUSED, | |
3671 | struct ofpbuf *out) | |
c2d936a4 BP |
3672 | { |
3673 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
3674 | return 0; | |
3675 | } | |
8621547c | 3676 | |
c2d936a4 BP |
3677 | static void |
3678 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
3679 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3680 | { | |
3681 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
3682 | } | |
8621547c | 3683 | |
cab50449 | 3684 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3685 | parse_SET_QUEUE(char *arg, struct ofpbuf *ofpacts, |
3686 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3687 | { | |
3688 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(ofpacts)->queue_id); | |
3689 | } | |
8621547c | 3690 | |
c2d936a4 BP |
3691 | static void |
3692 | format_SET_QUEUE(const struct ofpact_queue *a, struct ds *s) | |
3693 | { | |
b1c5bf1f QM |
3694 | ds_put_format(s, "%sset_queue:%s%"PRIu32, |
3695 | colors.param, colors.end, a->queue_id); | |
c2d936a4 BP |
3696 | } |
3697 | \f | |
3698 | /* Pop queue action. */ | |
1e7db674 | 3699 | |
c2d936a4 BP |
3700 | static enum ofperr |
3701 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
3702 | { | |
3703 | ofpact_put_POP_QUEUE(out); | |
3704 | return 0; | |
3705 | } | |
f25d0cf3 | 3706 | |
c2d936a4 BP |
3707 | static void |
3708 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
3709 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3710 | { | |
3711 | put_NXAST_POP_QUEUE(out); | |
3712 | } | |
f25d0cf3 | 3713 | |
cab50449 | 3714 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3715 | parse_POP_QUEUE(const char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
3716 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3717 | { | |
3718 | ofpact_put_POP_QUEUE(ofpacts); | |
3719 | return NULL; | |
3720 | } | |
f25d0cf3 | 3721 | |
c2d936a4 BP |
3722 | static void |
3723 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
3724 | { | |
b1c5bf1f | 3725 | ds_put_format(s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 BP |
3726 | } |
3727 | \f | |
3728 | /* Action structure for NXAST_FIN_TIMEOUT. | |
3729 | * | |
3730 | * This action changes the idle timeout or hard timeout, or both, of this | |
3731 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
3732 | * When such a packet is observed, the action reduces the rule's idle timeout | |
3733 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
3734 | * action has no effect on an existing timeout that is already shorter than the | |
3735 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
3736 | * of zero has no effect on the respective timeout. | |
3737 | * | |
3738 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
3739 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
3740 | * receipt of the FIN or RST. | |
3741 | * | |
3742 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
3743 | * take a long time to expire. | |
3744 | * | |
3745 | * This action is intended for use with an OpenFlow rule that matches only a | |
3746 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
3747 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
3748 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
3749 | * early, which is not normally desirable. | |
3750 | */ | |
3751 | struct nx_action_fin_timeout { | |
3752 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3753 | ovs_be16 len; /* 16. */ | |
3754 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3755 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
3756 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
3757 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
3758 | ovs_be16 pad; /* Must be zero. */ | |
3759 | }; | |
3760 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 3761 | |
c2d936a4 BP |
3762 | static enum ofperr |
3763 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 3764 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3765 | struct ofpbuf *out) |
3766 | { | |
3767 | struct ofpact_fin_timeout *oft; | |
8621547c | 3768 | |
c2d936a4 BP |
3769 | oft = ofpact_put_FIN_TIMEOUT(out); |
3770 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
3771 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
3772 | return 0; | |
3773 | } | |
f25d0cf3 | 3774 | |
c2d936a4 BP |
3775 | static void |
3776 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
3777 | enum ofp_version ofp_version OVS_UNUSED, | |
3778 | struct ofpbuf *out) | |
3779 | { | |
3780 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
3781 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
3782 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
3783 | } | |
f25d0cf3 | 3784 | |
cab50449 | 3785 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3786 | parse_FIN_TIMEOUT(char *arg, struct ofpbuf *ofpacts, |
3787 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3788 | { | |
3789 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(ofpacts); | |
3790 | char *key, *value; | |
f25d0cf3 | 3791 | |
c2d936a4 BP |
3792 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
3793 | char *error; | |
b02475c5 | 3794 | |
c2d936a4 BP |
3795 | if (!strcmp(key, "idle_timeout")) { |
3796 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
3797 | } else if (!strcmp(key, "hard_timeout")) { | |
3798 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
3799 | } else { | |
3800 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
3801 | key); | |
8621547c | 3802 | } |
8dd54666 | 3803 | |
c2d936a4 BP |
3804 | if (error) { |
3805 | return error; | |
9cae45dc | 3806 | } |
9cae45dc | 3807 | } |
c2d936a4 BP |
3808 | return NULL; |
3809 | } | |
e3b56933 | 3810 | |
c2d936a4 BP |
3811 | static void |
3812 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, struct ds *s) | |
3813 | { | |
b1c5bf1f | 3814 | ds_put_format(s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 3815 | if (a->fin_idle_timeout) { |
b1c5bf1f QM |
3816 | ds_put_format(s, "%sidle_timeout=%s%"PRIu16",", |
3817 | colors.param, colors.end, a->fin_idle_timeout); | |
7e9f8266 | 3818 | } |
c2d936a4 | 3819 | if (a->fin_hard_timeout) { |
b1c5bf1f QM |
3820 | ds_put_format(s, "%shard_timeout=%s%"PRIu16",", |
3821 | colors.param, colors.end, a->fin_hard_timeout); | |
f25d0cf3 | 3822 | } |
c2d936a4 | 3823 | ds_chomp(s, ','); |
b1c5bf1f | 3824 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
f25d0cf3 | 3825 | } |
c2d936a4 BP |
3826 | \f |
3827 | /* Action structures for NXAST_RESUBMIT and NXAST_RESUBMIT_TABLE. | |
eca39bce | 3828 | * |
c2d936a4 | 3829 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 3830 | * |
c2d936a4 BP |
3831 | * - For NXAST_RESUBMIT_TABLE only, if the 'table' member is not 255, then |
3832 | * it specifies the table to search. | |
ca287d20 | 3833 | * |
c2d936a4 BP |
3834 | * - Otherwise (for NXAST_RESUBMIT_TABLE with a 'table' of 255, or for |
3835 | * NXAST_RESUBMIT regardless of 'table'), it searches the current flow | |
3836 | * table, that is, the OpenFlow flow table that contains the flow from | |
3837 | * which this action was obtained. If this action did not come from a | |
3838 | * flow table (e.g. it came from an OFPT_PACKET_OUT message), then table 0 | |
3839 | * is the current table. | |
3840 | * | |
3841 | * The flow table lookup uses a flow that may be slightly modified from the | |
3842 | * original lookup: | |
3843 | * | |
3844 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
3845 | * is used as the flow's in_port. | |
3846 | * | |
3847 | * - For NXAST_RESUBMIT_TABLE, if the 'in_port' member is not OFPP_IN_PORT, | |
3848 | * then its value is used as the flow's in_port. Otherwise, the original | |
3849 | * in_port is used. | |
3850 | * | |
3851 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
3852 | * resubmit action, then the flow is updated with the new values. | |
3853 | * | |
3854 | * Following the lookup, the original in_port is restored. | |
3855 | * | |
3856 | * If the modified flow matched in the flow table, then the corresponding | |
3857 | * actions are executed. Afterward, actions following the resubmit in the | |
3858 | * original set of actions, if any, are executed; any changes made to the | |
3859 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
3860 | * actions are executed, although the original in_port is restored. | |
3861 | * | |
3862 | * Resubmit actions may be used any number of times within a set of actions. | |
3863 | * | |
790c5d26 BP |
3864 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
3865 | * use, the implementation may limit nesting depth and the total number of | |
3866 | * resubmits: | |
3867 | * | |
3868 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
3869 | * | |
3870 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
3871 | * | |
3872 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
3873 | * | |
3874 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
3875 | * | |
3876 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
3877 | * | |
3878 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
3879 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
3880 | * did not impose any total limit). | |
c2d936a4 BP |
3881 | * |
3882 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE requires | |
3883 | * 'pad' to be all-bits-zero. | |
3884 | * | |
3885 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
3886 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. | |
3887 | */ | |
3888 | struct nx_action_resubmit { | |
3889 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3890 | ovs_be16 len; /* Length is 16. */ | |
3891 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3892 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
3893 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
3894 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
3895 | uint8_t pad[3]; | |
3896 | }; | |
3897 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
3898 | ||
3899 | static enum ofperr | |
f3cd3ac7 JS |
3900 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
3901 | enum ofp_version ofp_version OVS_UNUSED, | |
3902 | struct ofpbuf *out) | |
f25d0cf3 | 3903 | { |
c2d936a4 | 3904 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 3905 | |
c2d936a4 BP |
3906 | resubmit = ofpact_put_RESUBMIT(out); |
3907 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
3908 | resubmit->in_port = u16_to_ofp(port); | |
3909 | resubmit->table_id = 0xff; | |
3910 | return 0; | |
f25d0cf3 | 3911 | } |
4cceacb9 | 3912 | |
c2d936a4 BP |
3913 | static enum ofperr |
3914 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 3915 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 3916 | struct ofpbuf *out) |
ba2fe8e9 | 3917 | { |
c2d936a4 | 3918 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 3919 | |
c2d936a4 BP |
3920 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
3921 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
3922 | } | |
3923 | ||
3924 | resubmit = ofpact_put_RESUBMIT(out); | |
3925 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
3926 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
3927 | resubmit->table_id = nar->table; | |
3928 | return 0; | |
ba2fe8e9 BP |
3929 | } |
3930 | ||
c2d936a4 BP |
3931 | static void |
3932 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
3933 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 3934 | { |
c2d936a4 | 3935 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 3936 | |
c2d936a4 BP |
3937 | if (resubmit->table_id == 0xff |
3938 | && resubmit->ofpact.raw != NXAST_RAW_RESUBMIT_TABLE) { | |
3939 | put_NXAST_RESUBMIT(out, in_port); | |
3940 | } else { | |
3941 | struct nx_action_resubmit *nar = put_NXAST_RESUBMIT_TABLE(out); | |
3942 | nar->table = resubmit->table_id; | |
3943 | nar->in_port = htons(in_port); | |
3944 | } | |
3945 | } | |
6813ee7c | 3946 | |
cab50449 | 3947 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3948 | parse_RESUBMIT(char *arg, struct ofpbuf *ofpacts, |
3949 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
3950 | { | |
3951 | struct ofpact_resubmit *resubmit; | |
3952 | char *in_port_s, *table_s; | |
6813ee7c | 3953 | |
c2d936a4 | 3954 | resubmit = ofpact_put_RESUBMIT(ofpacts); |
8f2cded4 | 3955 | |
c2d936a4 BP |
3956 | in_port_s = strsep(&arg, ","); |
3957 | if (in_port_s && in_port_s[0]) { | |
3958 | if (!ofputil_port_from_string(in_port_s, &resubmit->in_port)) { | |
3959 | return xasprintf("%s: resubmit to unknown port", in_port_s); | |
8f2cded4 | 3960 | } |
c2d936a4 BP |
3961 | } else { |
3962 | resubmit->in_port = OFPP_IN_PORT; | |
3963 | } | |
4cceacb9 | 3964 | |
c2d936a4 BP |
3965 | table_s = strsep(&arg, ","); |
3966 | if (table_s && table_s[0]) { | |
3967 | uint32_t table_id = 0; | |
3968 | char *error; | |
3969 | ||
3970 | error = str_to_u32(table_s, &table_id); | |
3971 | if (error) { | |
3972 | return error; | |
3973 | } | |
3974 | resubmit->table_id = table_id; | |
3975 | } else { | |
3976 | resubmit->table_id = 255; | |
4cceacb9 JS |
3977 | } |
3978 | ||
c2d936a4 BP |
3979 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
3980 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
3981 | "specified on resubmit"); | |
3982 | } | |
3983 | return NULL; | |
3984 | } | |
3985 | ||
3986 | static void | |
3987 | format_RESUBMIT(const struct ofpact_resubmit *a, struct ds *s) | |
3988 | { | |
3989 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
b1c5bf1f | 3990 | ds_put_format(s, "%sresubmit:%s", colors.special, colors.end); |
c2d936a4 BP |
3991 | ofputil_format_port(a->in_port, s); |
3992 | } else { | |
b1c5bf1f | 3993 | ds_put_format(s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 BP |
3994 | if (a->in_port != OFPP_IN_PORT) { |
3995 | ofputil_format_port(a->in_port, s); | |
3996 | } | |
3997 | ds_put_char(s, ','); | |
3998 | if (a->table_id != 255) { | |
3999 | ds_put_format(s, "%"PRIu8, a->table_id); | |
4000 | } | |
b1c5bf1f | 4001 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
4002 | } |
4003 | } | |
4004 | \f | |
4005 | /* Action structure for NXAST_LEARN. | |
4006 | * | |
4007 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
4008 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
4009 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
4010 | * flow's match criteria and actions are built by applying each of the series | |
4011 | * of flow_mod_spec elements included as part of the action. | |
4012 | * | |
4013 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
4014 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
4015 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
4016 | * bits from a source to a destination. In this case, the header contains | |
4017 | * multiple fields: | |
4018 | * | |
4019 | * 15 14 13 12 11 10 0 | |
4020 | * +------+---+------+---------------------------------+ | |
4021 | * | 0 |src| dst | n_bits | | |
4022 | * +------+---+------+---------------------------------+ | |
4023 | * | |
4024 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
4025 | * following table summarizes the meaning of each possible combination. | |
4026 | * Details follow the table: | |
4027 | * | |
4028 | * src dst meaning | |
4029 | * --- --- ---------------------------------------------------------- | |
4030 | * 0 0 Add match criteria based on value in a field. | |
4031 | * 1 0 Add match criteria based on an immediate value. | |
4032 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
4033 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
4034 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
4035 | * All other combinations are undefined and not allowed. | |
4036 | * | |
4037 | * The flow_mod_spec header is followed by a source specification and a | |
4038 | * destination specification. The format and meaning of the source | |
4039 | * specification depends on 'src': | |
4040 | * | |
4041 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
4042 | * which this action is attached. (This should be a wildcarded field. If | |
4043 | * its value is fully specified then the source bits being copied have | |
4044 | * constant values.) | |
4045 | * | |
4046 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
4047 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
4048 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
4049 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
4050 | * field in NXAST_REG_MOVE. | |
4051 | * | |
4052 | * - If 'src' is 1, the source bits are a constant value. The source | |
4053 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
4054 | * number in network order, the source bits are the 'n_bits' | |
4055 | * least-significant bits. The switch will report an error if other bits | |
4056 | * in the constant are nonzero. | |
4057 | * | |
4058 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
4059 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
4060 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
4061 | * meaning of the flow_mod_spec depends on 'dst': | |
4062 | * | |
4063 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
4064 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
4065 | * packet equal the source bits. 'field' may be any nxm_header with | |
4066 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
4067 | * | |
4068 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
4069 | * prerequisites for matching fields specified later, by copying constant | |
4070 | * values into prerequisite fields. | |
4071 | * | |
4072 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
4073 | * restrictions. | |
4074 | * | |
4075 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
4076 | * the new flow. The new flow copies the source bits into | |
4077 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
4078 | * flow_mod_specs. | |
4079 | * | |
4080 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
4081 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
4082 | * | |
4083 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
4084 | * empty. It has the following meaning: | |
4085 | * | |
4086 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
4087 | * The new flow outputs to the OpenFlow port specified by the source field. | |
4088 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
4089 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
4090 | * may not be used. | |
4091 | * | |
4092 | * Resource Management | |
4093 | * ------------------- | |
4094 | * | |
4095 | * A switch has a finite amount of flow table space available for learning. | |
4096 | * When this space is exhausted, no new learning table entries will be learned | |
4097 | * until some existing flow table entries expire. The controller should be | |
4098 | * prepared to handle this by flooding (which can be implemented as a | |
4099 | * low-priority flow). | |
4100 | * | |
4101 | * If a learned flow matches a single TCP stream with a relatively long | |
4102 | * timeout, one may make the best of resource constraints by setting | |
4103 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
4104 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
4105 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
4106 | * the learned flow. | |
4107 | * | |
4108 | * Examples | |
4109 | * -------- | |
4110 | * | |
4111 | * The following examples give a prose description of the flow_mod_specs along | |
4112 | * with informal notation for how those would be represented and a hex dump of | |
4113 | * the bytes that would be required. | |
4114 | * | |
4115 | * These examples could work with various nx_action_learn parameters. Typical | |
4116 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
4117 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
4118 | * | |
4119 | * 1. Learn input port based on the source MAC, with lookup into | |
4120 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
4121 | * | |
4122 | * Match on in_port=99: | |
4123 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
4124 | * ovs_be16(99), 00 63 | |
4125 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4126 | * | |
4127 | * Match Ethernet destination on Ethernet source from packet: | |
4128 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4129 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4130 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4131 | * | |
4132 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
4133 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
4134 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4135 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
4136 | * | |
4137 | * Given a packet that arrived on port A with Ethernet source address B, | |
4138 | * this would set up the flow "in_port=99, dl_dst=B, | |
4139 | * actions=load:A->NXM_NX_REG1[16..31]". | |
4140 | * | |
4141 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
4142 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4143 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
4144 | * | |
4145 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
4146 | * into NXM_NX_REG1[16:31]: | |
4147 | * | |
4148 | * Match on same VLAN ID as packet: | |
4149 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
4150 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4151 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4152 | * | |
4153 | * Match Ethernet destination on Ethernet source from packet: | |
4154 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4155 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4156 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4157 | * | |
4158 | * Output to the packet's input port: | |
4159 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
4160 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4161 | * | |
4162 | * Given a packet that arrived on port A with Ethernet source address B in | |
4163 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
4164 | * actions=output:A". | |
4165 | * | |
4166 | * In syntax accepted by ovs-ofctl, this action is: | |
4167 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4168 | * output:NXM_OF_IN_PORT[]) | |
4169 | * | |
4170 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
4171 | * 10-second MAC expiration time to make it easier to see what's going on | |
4172 | * | |
4173 | * ovs-vsctl del-controller br0 | |
4174 | * ovs-ofctl del-flows br0 | |
4175 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
4176 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
4177 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
4178 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
4179 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
4180 | * | |
4181 | * You can then dump the MAC learning table with: | |
4182 | * | |
4183 | * ovs-ofctl dump-flows br0 table=1 | |
4184 | * | |
4185 | * Usage Advice | |
4186 | * ------------ | |
4187 | * | |
4188 | * For best performance, segregate learned flows into a table that is not used | |
4189 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
4190 | * (a flow with no match criteria). If different learning actions specify | |
4191 | * different match criteria, use different tables for the learned flows. | |
4192 | * | |
4193 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
4194 | * These timeouts apply to the flow that is added, which means that a flow with | |
4195 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
4196 | * address. This is not usually the intent in MAC learning; instead, we want | |
4197 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
4198 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
4199 | * |
4200 | * | |
4201 | * Visibility of Changes | |
4202 | * --------------------- | |
4203 | * | |
4204 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
4205 | * flow translation are visible to flow table lookups made later in the flow | |
4206 | * translation. This means that, in the example above, a MAC learned by the | |
4207 | * learn action in table 0 would be found in table 1 (if the packet being | |
4208 | * processed had the same source and destination MAC address). | |
4209 | * | |
4210 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
4211 | * modify a flow) by a "learn" action are visible only for later flow | |
4212 | * translations, not for later lookups within the same flow translation. In | |
4213 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
4214 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
4215 | * after the processing of the learn action, meaning that if this MAC had not | |
4216 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
4217 | struct nx_action_learn { |
4218 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4219 | ovs_be16 len; /* At least 24. */ | |
4220 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4221 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
4222 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
4223 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
4224 | ovs_be16 priority; /* Priority level of flow entry. */ | |
4225 | ovs_be64 cookie; /* Cookie for new flow. */ | |
4226 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
4227 | uint8_t table_id; /* Table to insert flow entry. */ | |
4228 | uint8_t pad; /* Must be zero. */ | |
4229 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
4230 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
4231 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
4232 | * until the end of the action is reached. */ | |
4233 | }; | |
4234 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
4235 | ||
4236 | static ovs_be16 | |
4237 | get_be16(const void **pp) | |
4238 | { | |
4239 | const ovs_be16 *p = *pp; | |
4240 | ovs_be16 value = *p; | |
4241 | *pp = p + 1; | |
4242 | return value; | |
4243 | } | |
4244 | ||
4245 | static ovs_be32 | |
4246 | get_be32(const void **pp) | |
4247 | { | |
4248 | const ovs_be32 *p = *pp; | |
4249 | ovs_be32 value = get_unaligned_be32(p); | |
4250 | *pp = p + 1; | |
4251 | return value; | |
4252 | } | |
4253 | ||
4254 | static void | |
4255 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf) | |
4256 | { | |
4257 | sf->field = mf_from_nxm_header(ntohl(get_be32(p))); | |
4258 | sf->ofs = ntohs(get_be16(p)); | |
4259 | sf->n_bits = n_bits; | |
4260 | } | |
4261 | ||
4262 | static unsigned int | |
4263 | learn_min_len(uint16_t header) | |
4264 | { | |
4265 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
4266 | int src_type = header & NX_LEARN_SRC_MASK; | |
4267 | int dst_type = header & NX_LEARN_DST_MASK; | |
4268 | unsigned int min_len; | |
4269 | ||
4270 | min_len = 0; | |
4271 | if (src_type == NX_LEARN_SRC_FIELD) { | |
4272 | min_len += sizeof(ovs_be32); /* src_field */ | |
4273 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
4274 | } else { | |
4275 | min_len += DIV_ROUND_UP(n_bits, 16); | |
4276 | } | |
4277 | if (dst_type == NX_LEARN_DST_MATCH || | |
4278 | dst_type == NX_LEARN_DST_LOAD) { | |
4279 | min_len += sizeof(ovs_be32); /* dst_field */ | |
4280 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
4281 | } | |
4282 | return min_len; | |
4283 | } | |
4284 | ||
4285 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to | |
4286 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4287 | static enum ofperr | |
4288 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
f3cd3ac7 | 4289 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4290 | struct ofpbuf *ofpacts) |
4291 | { | |
4292 | struct ofpact_learn *learn; | |
4293 | const void *p, *end; | |
4294 | ||
4295 | if (nal->pad) { | |
4296 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4297 | } | |
4298 | ||
4299 | learn = ofpact_put_LEARN(ofpacts); | |
4300 | ||
4301 | learn->idle_timeout = ntohs(nal->idle_timeout); | |
4302 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
4303 | learn->priority = ntohs(nal->priority); | |
4304 | learn->cookie = nal->cookie; | |
4305 | learn->table_id = nal->table_id; | |
4306 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
4307 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
4308 | ||
4309 | learn->flags = ntohs(nal->flags); | |
4310 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4311 | NX_LEARN_F_DELETE_LEARNED)) { | |
4312 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4313 | } | |
4314 | ||
4315 | if (learn->table_id == 0xff) { | |
4316 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4317 | } | |
4318 | ||
4319 | end = (char *) nal + ntohs(nal->len); | |
4320 | for (p = nal + 1; p != end; ) { | |
4321 | struct ofpact_learn_spec *spec; | |
4322 | uint16_t header = ntohs(get_be16(&p)); | |
4323 | ||
4324 | if (!header) { | |
4325 | break; | |
4326 | } | |
4327 | ||
4328 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 4329 | learn = ofpacts->header; |
c2d936a4 BP |
4330 | |
4331 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
4332 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
4333 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
4334 | ||
4335 | /* Check for valid src and dst type combination. */ | |
4336 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4337 | spec->dst_type == NX_LEARN_DST_LOAD || | |
4338 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
4339 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
4340 | /* OK. */ | |
4341 | } else { | |
4342 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4343 | } | |
4344 | ||
4345 | /* Check that the arguments don't overrun the end of the action. */ | |
4346 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
4347 | return OFPERR_OFPBAC_BAD_LEN; | |
4348 | } | |
4349 | ||
4350 | /* Get the source. */ | |
dfe191d5 JR |
4351 | const uint8_t *imm = NULL; |
4352 | unsigned int imm_bytes = 0; | |
c2d936a4 BP |
4353 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
4354 | get_subfield(spec->n_bits, &p, &spec->src); | |
4355 | } else { | |
4356 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 4357 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
4358 | |
4359 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
4360 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
4361 | } |
4362 | ||
4363 | /* Get the destination. */ | |
4364 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4365 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
4366 | get_subfield(spec->n_bits, &p, &spec->dst); | |
4367 | } | |
dfe191d5 JR |
4368 | |
4369 | if (imm) { | |
4370 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
4371 | OFPACT_ALIGN(imm_bytes)); | |
4372 | memcpy(src_imm, imm, imm_bytes); | |
4373 | ||
4374 | learn = ofpacts->header; | |
4375 | } | |
c2d936a4 | 4376 | } |
ce058104 | 4377 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
4378 | |
4379 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
4380 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4381 | } | |
4382 | ||
4383 | return 0; | |
4384 | } | |
4385 | ||
4386 | static void | |
4387 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
4388 | { | |
4389 | ofpbuf_put(b, &x, sizeof x); | |
4390 | } | |
4391 | ||
4392 | static void | |
4393 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
4394 | { | |
4395 | ofpbuf_put(b, &x, sizeof x); | |
4396 | } | |
4397 | ||
4398 | static void | |
4399 | put_u16(struct ofpbuf *b, uint16_t x) | |
4400 | { | |
4401 | put_be16(b, htons(x)); | |
4402 | } | |
4403 | ||
4404 | static void | |
4405 | put_u32(struct ofpbuf *b, uint32_t x) | |
4406 | { | |
4407 | put_be32(b, htonl(x)); | |
4408 | } | |
4409 | ||
4410 | static void | |
4411 | encode_LEARN(const struct ofpact_learn *learn, | |
4412 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4413 | { | |
4414 | const struct ofpact_learn_spec *spec; | |
4415 | struct nx_action_learn *nal; | |
4416 | size_t start_ofs; | |
4417 | ||
6fd6ed71 | 4418 | start_ofs = out->size; |
c2d936a4 BP |
4419 | nal = put_NXAST_LEARN(out); |
4420 | nal->idle_timeout = htons(learn->idle_timeout); | |
4421 | nal->hard_timeout = htons(learn->hard_timeout); | |
4422 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
4423 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
4424 | nal->priority = htons(learn->priority); | |
4425 | nal->cookie = learn->cookie; | |
4426 | nal->flags = htons(learn->flags); | |
4427 | nal->table_id = learn->table_id; | |
4428 | ||
c65a31e2 | 4429 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
4430 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
4431 | ||
4432 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
508a9338 | 4433 | put_u32(out, mf_nxm_header(spec->src.field->id)); |
c2d936a4 BP |
4434 | put_u16(out, spec->src.ofs); |
4435 | } else { | |
4436 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
4437 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 4438 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 4439 | |
507a9a16 JR |
4440 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
4441 | n_bytes); | |
c2d936a4 BP |
4442 | } |
4443 | ||
4444 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4445 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
508a9338 | 4446 | put_u32(out, mf_nxm_header(spec->dst.field->id)); |
c2d936a4 BP |
4447 | put_u16(out, spec->dst.ofs); |
4448 | } | |
4449 | } | |
4450 | ||
178742f9 | 4451 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
4452 | } |
4453 | ||
cab50449 | 4454 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4455 | parse_LEARN(char *arg, struct ofpbuf *ofpacts, |
4456 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4457 | { | |
4458 | return learn_parse(arg, ofpacts); | |
4459 | } | |
4460 | ||
4461 | static void | |
4462 | format_LEARN(const struct ofpact_learn *a, struct ds *s) | |
4463 | { | |
4464 | learn_format(a, s); | |
4465 | } | |
4466 | \f | |
18080541 BP |
4467 | /* Action structure for NXAST_CONJUNCTION. */ |
4468 | struct nx_action_conjunction { | |
4469 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4470 | ovs_be16 len; /* At least 16. */ | |
4471 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4472 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
4473 | uint8_t clause; | |
4474 | uint8_t n_clauses; | |
4475 | ovs_be32 id; | |
4476 | }; | |
4477 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
4478 | ||
4479 | static void | |
4480 | add_conjunction(struct ofpbuf *out, | |
4481 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
4482 | { | |
4483 | struct ofpact_conjunction *oc; | |
4484 | ||
4485 | oc = ofpact_put_CONJUNCTION(out); | |
4486 | oc->id = id; | |
4487 | oc->clause = clause; | |
4488 | oc->n_clauses = n_clauses; | |
4489 | } | |
4490 | ||
4491 | static enum ofperr | |
4492 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 4493 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
4494 | struct ofpbuf *out) |
4495 | { | |
4496 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
4497 | || nac->clause >= nac->n_clauses) { | |
4498 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
4499 | } else { | |
4500 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
4501 | return 0; | |
4502 | } | |
4503 | } | |
4504 | ||
4505 | static void | |
4506 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
4507 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4508 | { | |
4509 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
4510 | nac->clause = oc->clause; | |
4511 | nac->n_clauses = oc->n_clauses; | |
4512 | nac->id = htonl(oc->id); | |
4513 | } | |
4514 | ||
4515 | static void | |
4516 | format_CONJUNCTION(const struct ofpact_conjunction *oc, struct ds *s) | |
4517 | { | |
b1c5bf1f QM |
4518 | ds_put_format(s, "%sconjunction(%s%"PRIu32",%"PRIu8"/%"PRIu8"%s)%s", |
4519 | colors.paren, colors.end, | |
4520 | oc->id, oc->clause + 1, oc->n_clauses, | |
4521 | colors.paren, colors.end); | |
18080541 BP |
4522 | } |
4523 | ||
4524 | static char * OVS_WARN_UNUSED_RESULT | |
4525 | parse_CONJUNCTION(const char *arg, struct ofpbuf *ofpacts, | |
4526 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4527 | { | |
4528 | uint8_t n_clauses; | |
4529 | uint8_t clause; | |
4530 | uint32_t id; | |
4531 | int n; | |
4532 | ||
4533 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
4534 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
4535 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
4536 | } | |
4537 | ||
4538 | if (n_clauses < 2) { | |
4539 | return xstrdup("conjunction must have at least 2 clauses"); | |
4540 | } else if (n_clauses > 64) { | |
4541 | return xstrdup("conjunction must have at most 64 clauses"); | |
4542 | } else if (clause < 1) { | |
4543 | return xstrdup("clause index must be positive"); | |
4544 | } else if (clause > n_clauses) { | |
4545 | return xstrdup("clause index must be less than or equal to " | |
4546 | "number of clauses"); | |
4547 | } | |
4548 | ||
4549 | add_conjunction(ofpacts, id, clause - 1, n_clauses); | |
4550 | return NULL; | |
4551 | } | |
4552 | \f | |
c2d936a4 BP |
4553 | /* Action structure for NXAST_MULTIPATH. |
4554 | * | |
4555 | * This action performs the following steps in sequence: | |
4556 | * | |
4557 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
4558 | * Refer to the definition of "enum nx_mp_fields" for details. | |
4559 | * | |
4560 | * The 'basis' value is used as a universal hash parameter, that is, | |
4561 | * different values of 'basis' yield different hash functions. The | |
4562 | * particular universal hash function used is implementation-defined. | |
4563 | * | |
4564 | * The hashed fields' values are drawn from the current state of the | |
4565 | * flow, including all modifications that have been made by actions up to | |
4566 | * this point. | |
4567 | * | |
4568 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
4569 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
4570 | * for details. | |
4571 | * | |
4572 | * The output of the algorithm is 'link', an unsigned integer less than | |
4573 | * or equal to 'max_link'. | |
4574 | * | |
4575 | * Some algorithms use 'arg' as an additional argument. | |
4576 | * | |
4577 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
4578 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
4579 | * action. | |
4580 | * | |
4581 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
4582 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
4583 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
4584 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
4585 | */ | |
4586 | struct nx_action_multipath { | |
4587 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4588 | ovs_be16 len; /* Length is 32. */ | |
4589 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4590 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
4591 | ||
4592 | /* What fields to hash and how. */ | |
4593 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
4594 | ovs_be16 basis; /* Universal hash parameter. */ | |
4595 | ovs_be16 pad0; | |
4596 | ||
4597 | /* Multipath link choice algorithm to apply to hash value. */ | |
4598 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
4599 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
4600 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
4601 | ovs_be16 pad1; | |
4602 | ||
4603 | /* Where to store the result. */ | |
4604 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
4605 | ovs_be32 dst; /* Destination. */ | |
4606 | }; | |
4607 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
4608 | ||
4609 | static enum ofperr | |
4610 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 4611 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4612 | struct ofpbuf *out) |
4613 | { | |
4614 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
4615 | size_t min_n_bits = log_2_ceil(n_links); | |
4616 | struct ofpact_multipath *mp; | |
4617 | ||
4618 | mp = ofpact_put_MULTIPATH(out); | |
4619 | mp->fields = ntohs(nam->fields); | |
4620 | mp->basis = ntohs(nam->basis); | |
4621 | mp->algorithm = ntohs(nam->algorithm); | |
4622 | mp->max_link = ntohs(nam->max_link); | |
4623 | mp->arg = ntohl(nam->arg); | |
4624 | mp->dst.field = mf_from_nxm_header(ntohl(nam->dst)); | |
4625 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); | |
4626 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
4627 | ||
4628 | if (!flow_hash_fields_valid(mp->fields)) { | |
4629 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
4630 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4631 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
4632 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
4633 | && mp->algorithm != NX_MP_ALG_HRW | |
4634 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
4635 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
4636 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4637 | } else if (mp->dst.n_bits < min_n_bits) { | |
4638 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
4639 | "%"PRIu32" links", min_n_bits, n_links); | |
4640 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4641 | } | |
4642 | ||
4643 | return multipath_check(mp, NULL); | |
4644 | } | |
4645 | ||
4646 | static void | |
4647 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
4648 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4649 | { | |
4650 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
4651 | ||
4652 | nam->fields = htons(mp->fields); | |
4653 | nam->basis = htons(mp->basis); | |
4654 | nam->algorithm = htons(mp->algorithm); | |
4655 | nam->max_link = htons(mp->max_link); | |
4656 | nam->arg = htonl(mp->arg); | |
4657 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
508a9338 | 4658 | nam->dst = htonl(mf_nxm_header(mp->dst.field->id)); |
c2d936a4 BP |
4659 | } |
4660 | ||
cab50449 | 4661 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4662 | parse_MULTIPATH(const char *arg, struct ofpbuf *ofpacts, |
4663 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4664 | { | |
4665 | return multipath_parse(ofpact_put_MULTIPATH(ofpacts), arg); | |
4666 | } | |
4667 | ||
4668 | static void | |
4669 | format_MULTIPATH(const struct ofpact_multipath *a, struct ds *s) | |
4670 | { | |
4671 | multipath_format(a, s); | |
4672 | } | |
4673 | \f | |
4674 | /* Action structure for NXAST_NOTE. | |
4675 | * | |
4676 | * This action has no effect. It is variable length. The switch does not | |
4677 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
4678 | * can use this action to attach arbitrary metadata to a flow. | |
4679 | * | |
4680 | * This action might go away in the future. | |
4681 | */ | |
4682 | struct nx_action_note { | |
4683 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4684 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
4685 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4686 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
4687 | uint8_t note[6]; /* Start of user-defined data. */ | |
4688 | /* Possibly followed by additional user-defined data. */ | |
4689 | }; | |
4690 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
4691 | ||
4692 | static enum ofperr | |
f3cd3ac7 JS |
4693 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
4694 | enum ofp_version ofp_version OVS_UNUSED, | |
4695 | struct ofpbuf *out) | |
c2d936a4 BP |
4696 | { |
4697 | struct ofpact_note *note; | |
4698 | unsigned int length; | |
4699 | ||
4700 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 4701 | note = ofpact_put_NOTE(out); |
c2d936a4 | 4702 | note->length = length; |
2bd318de | 4703 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 4704 | note = out->header; |
ce058104 | 4705 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
4706 | |
4707 | return 0; | |
4708 | } | |
4709 | ||
4710 | static void | |
4711 | encode_NOTE(const struct ofpact_note *note, | |
4712 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4713 | { | |
6fd6ed71 | 4714 | size_t start_ofs = out->size; |
c2d936a4 | 4715 | struct nx_action_note *nan; |
c2d936a4 BP |
4716 | |
4717 | put_NXAST_NOTE(out); | |
6fd6ed71 | 4718 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
4719 | |
4720 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 4721 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
4722 | } |
4723 | ||
cab50449 | 4724 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4725 | parse_NOTE(const char *arg, struct ofpbuf *ofpacts, |
4726 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4727 | { | |
27aa8793 BP |
4728 | size_t start_ofs = ofpacts->size; |
4729 | ofpact_put_NOTE(ofpacts); | |
4730 | arg = ofpbuf_put_hex(ofpacts, arg, NULL); | |
4731 | if (arg[0]) { | |
4732 | return xstrdup("bad hex digit in `note' argument"); | |
4733 | } | |
4734 | struct ofpact_note *note = ofpbuf_at_assert(ofpacts, start_ofs, | |
4735 | sizeof *note); | |
4736 | note->length = ofpacts->size - (start_ofs + sizeof *note); | |
ce058104 | 4737 | ofpact_finish_NOTE(ofpacts, ¬e); |
c2d936a4 BP |
4738 | return NULL; |
4739 | } | |
4740 | ||
4741 | static void | |
4742 | format_NOTE(const struct ofpact_note *a, struct ds *s) | |
4743 | { | |
b1c5bf1f | 4744 | ds_put_format(s, "%snote:%s", colors.param, colors.end); |
bdcad671 | 4745 | format_hex_arg(s, a->data, a->length); |
c2d936a4 BP |
4746 | } |
4747 | \f | |
4748 | /* Exit action. */ | |
4749 | ||
4750 | static enum ofperr | |
4751 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
4752 | { | |
4753 | ofpact_put_EXIT(out); | |
4754 | return 0; | |
4755 | } | |
4756 | ||
4757 | static void | |
4758 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
4759 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4760 | { | |
4761 | put_NXAST_EXIT(out); | |
4762 | } | |
4763 | ||
cab50449 | 4764 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
4765 | parse_EXIT(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
4766 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4767 | { | |
4768 | ofpact_put_EXIT(ofpacts); | |
4769 | return NULL; | |
4770 | } | |
4771 | ||
4772 | static void | |
4773 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
4774 | { | |
b1c5bf1f | 4775 | ds_put_format(s, "%sexit%s", colors.special, colors.end); |
c2d936a4 BP |
4776 | } |
4777 | \f | |
e672ff9b JR |
4778 | /* Unroll xlate action. */ |
4779 | ||
4780 | static void | |
4781 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
4782 | enum ofp_version ofp_version OVS_UNUSED, | |
4783 | struct ofpbuf *out OVS_UNUSED) | |
4784 | { | |
4785 | OVS_NOT_REACHED(); | |
4786 | } | |
4787 | ||
4788 | static char * OVS_WARN_UNUSED_RESULT | |
4789 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, struct ofpbuf *ofpacts OVS_UNUSED, | |
4790 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4791 | { | |
4792 | OVS_NOT_REACHED(); | |
4793 | return NULL; | |
4794 | } | |
4795 | ||
4796 | static void | |
28632a8a | 4797 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, struct ds *s) |
e672ff9b | 4798 | { |
b1c5bf1f QM |
4799 | ds_put_format(s, "%sunroll_xlate(%s%stable=%s%"PRIu8 |
4800 | ", %scookie=%s%"PRIu64"%s)%s", | |
4801 | colors.paren, colors.end, | |
4802 | colors.special, colors.end, a->rule_table_id, | |
4803 | colors.param, colors.end, ntohll(a->rule_cookie), | |
4804 | colors.paren, colors.end); | |
e672ff9b JR |
4805 | } |
4806 | \f | |
7ae62a67 WT |
4807 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
4808 | * more embedded OpenFlow actions. */ | |
4809 | ||
4810 | static enum ofperr | |
4811 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
4812 | enum ofp_version ofp_version, | |
4813 | struct ofpbuf *out) | |
4814 | { | |
4815 | int error; | |
4816 | struct ofpbuf openflow; | |
4817 | const size_t clone_offset = ofpacts_pull(out); | |
4818 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
4819 | ||
4820 | /* decode action list */ | |
4821 | ofpbuf_pull(out, sizeof(*clone)); | |
4822 | openflow = ofpbuf_const_initializer( | |
4823 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
4824 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
4825 | ofp_version, | |
4826 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
4827 | out, 0); | |
4828 | clone = ofpbuf_push_uninit(out, sizeof *clone); | |
4829 | out->header = &clone->ofpact; | |
4830 | ofpact_finish_CLONE(out, &clone); | |
4831 | ofpbuf_push_uninit(out, clone_offset); | |
4832 | return error; | |
4833 | } | |
4834 | ||
4835 | static void | |
4836 | encode_CLONE(const struct ofpact_nest *clone, | |
4837 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4838 | { | |
4839 | size_t len; | |
4840 | const size_t ofs = out->size; | |
4841 | struct ext_action_header *eah; | |
4842 | ||
4843 | eah = put_NXAST_CLONE(out); | |
4844 | len = ofpacts_put_openflow_actions(clone->actions, | |
4845 | ofpact_nest_get_action_len(clone), | |
4846 | out, ofp_version); | |
4847 | len += sizeof *eah; | |
4848 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
4849 | eah->len = htons(len); | |
4850 | } | |
4851 | ||
4852 | static char * OVS_WARN_UNUSED_RESULT | |
4853 | parse_CLONE(char *arg, struct ofpbuf *ofpacts, | |
4854 | enum ofputil_protocol *usable_protocols) | |
4855 | { | |
4856 | const size_t clone_offset = ofpacts_pull(ofpacts); | |
4857 | struct ofpact_nest *clone = ofpact_put_CLONE(ofpacts); | |
4858 | char *error; | |
4859 | ||
4860 | ofpbuf_pull(ofpacts, sizeof *clone); | |
4861 | error = ofpacts_parse_copy(arg, ofpacts, usable_protocols, false, 0); | |
4862 | /* header points to the action list */ | |
4863 | ofpacts->header = ofpbuf_push_uninit(ofpacts, sizeof *clone); | |
4864 | clone = ofpacts->header; | |
4865 | ||
4866 | ofpact_finish_CLONE(ofpacts, &clone); | |
4867 | ofpbuf_push_uninit(ofpacts, clone_offset); | |
4868 | return error; | |
4869 | } | |
4870 | ||
4871 | static void | |
4872 | format_CLONE(const struct ofpact_nest *a, struct ds *s) | |
4873 | { | |
4874 | ds_put_format(s, "%sclone(%s", colors.paren, colors.end); | |
4875 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), s); | |
4876 | ds_put_format(s, "%s)%s", colors.paren, colors.end); | |
4877 | } | |
4878 | \f | |
c2d936a4 BP |
4879 | /* Action structure for NXAST_SAMPLE. |
4880 | * | |
4881 | * Samples matching packets with the given probability and sends them | |
4882 | * each to the set of collectors identified with the given ID. The | |
4883 | * probability is expressed as a number of packets to be sampled out | |
4884 | * of USHRT_MAX packets, and must be >0. | |
4885 | * | |
4886 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
4887 | * record sent for each sampled packet is associated with the given | |
4888 | * observation domain ID and observation point ID. Each IPFIX flow | |
4889 | * record contain the sampled packet's headers when executing this | |
4890 | * rule. If a sampled packet's headers are modified by previous | |
4891 | * actions in the flow, those modified headers are sent. */ | |
4892 | struct nx_action_sample { | |
4893 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4894 | ovs_be16 len; /* Length is 24. */ | |
4895 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4896 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
4897 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
4898 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
4899 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
4900 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
4901 | }; | |
4902 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
4903 | ||
4930ea56 | 4904 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 4905 | * |
4930ea56 BP |
4906 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
4907 | * it adds support for exporting egress tunnel information. | |
4908 | * | |
4909 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
4910 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
4911 | struct nx_action_sample2 { |
4912 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4913 | ovs_be16 len; /* Length is 32. */ | |
4914 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4915 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
4916 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
4917 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
4918 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
4919 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
4920 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
4921 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
4922 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
4923 | }; |
4924 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
4925 | ||
c2d936a4 | 4926 | static enum ofperr |
f3cd3ac7 JS |
4927 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
4928 | enum ofp_version ofp_version OVS_UNUSED, | |
4929 | struct ofpbuf *out) | |
c2d936a4 BP |
4930 | { |
4931 | struct ofpact_sample *sample; | |
4932 | ||
4933 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
4934 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
4935 | sample->probability = ntohs(nas->probability); | |
4936 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
4937 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
4938 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 4939 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 4940 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
4941 | |
4942 | if (sample->probability == 0) { | |
4943 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4944 | } | |
4945 | ||
4946 | return 0; | |
4947 | } | |
4948 | ||
4949 | static enum ofperr | |
4930ea56 BP |
4950 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
4951 | enum ofp_raw_action_type raw, | |
4952 | enum nx_action_sample_direction direction, | |
4953 | struct ofpact_sample *sample) | |
f69f713b | 4954 | { |
4930ea56 | 4955 | sample->ofpact.raw = raw; |
c2d936a4 BP |
4956 | sample->probability = ntohs(nas->probability); |
4957 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
4958 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
4959 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 4960 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 4961 | sample->direction = direction; |
c2d936a4 BP |
4962 | |
4963 | if (sample->probability == 0) { | |
4964 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4965 | } | |
4966 | ||
4967 | return 0; | |
4968 | } | |
4969 | ||
4930ea56 BP |
4970 | static enum ofperr |
4971 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
4972 | enum ofp_version ofp_version OVS_UNUSED, | |
4973 | struct ofpbuf *out) | |
4974 | { | |
4975 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
4976 | ofpact_put_SAMPLE(out)); | |
4977 | } | |
4978 | ||
4979 | static enum ofperr | |
4980 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
4981 | enum ofp_version ofp_version OVS_UNUSED, | |
4982 | struct ofpbuf *out) | |
4983 | { | |
4984 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
4985 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
4986 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
4987 | } | |
4988 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
4989 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
4990 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
4991 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
4992 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4993 | } | |
4994 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
4995 | } | |
4996 | ||
4997 | static void | |
4998 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
4999 | struct nx_action_sample2 *nas) | |
5000 | { | |
5001 | nas->probability = htons(sample->probability); | |
5002 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5003 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5004 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5005 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
5006 | nas->direction = sample->direction; | |
5007 | } | |
5008 | ||
c2d936a4 BP |
5009 | static void |
5010 | encode_SAMPLE(const struct ofpact_sample *sample, | |
5011 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5012 | { | |
4930ea56 BP |
5013 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
5014 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
5015 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
5016 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
5017 | || sample->sampling_port != OFPP_NONE) { | |
5018 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
5019 | } else { |
5020 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
5021 | nas->probability = htons(sample->probability); | |
5022 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5023 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5024 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5025 | } | |
c2d936a4 BP |
5026 | } |
5027 | ||
5028 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
5029 | * action to 'ofpacts'. | |
5030 | * | |
5031 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5032 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 5033 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5034 | parse_SAMPLE(char *arg, struct ofpbuf *ofpacts, |
5035 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5036 | { | |
5037 | struct ofpact_sample *os = ofpact_put_SAMPLE(ofpacts); | |
f69f713b | 5038 | os->sampling_port = OFPP_NONE; |
4930ea56 | 5039 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 5040 | |
f69f713b | 5041 | char *key, *value; |
c2d936a4 BP |
5042 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
5043 | char *error = NULL; | |
5044 | ||
5045 | if (!strcmp(key, "probability")) { | |
5046 | error = str_to_u16(value, "probability", &os->probability); | |
5047 | if (!error && os->probability == 0) { | |
5048 | error = xasprintf("invalid probability value \"%s\"", value); | |
5049 | } | |
5050 | } else if (!strcmp(key, "collector_set_id")) { | |
5051 | error = str_to_u32(value, &os->collector_set_id); | |
5052 | } else if (!strcmp(key, "obs_domain_id")) { | |
5053 | error = str_to_u32(value, &os->obs_domain_id); | |
5054 | } else if (!strcmp(key, "obs_point_id")) { | |
5055 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b BY |
5056 | } else if (!strcmp(key, "sampling_port")) { |
5057 | if (!ofputil_port_from_string(value, &os->sampling_port)) { | |
5058 | error = xasprintf("%s: unknown port", value); | |
5059 | } | |
4930ea56 BP |
5060 | } else if (!strcmp(key, "ingress")) { |
5061 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
5062 | } else if (!strcmp(key, "egress")) { | |
5063 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
5064 | } else { |
5065 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
5066 | key); | |
5067 | } | |
5068 | if (error) { | |
5069 | return error; | |
5070 | } | |
5071 | } | |
5072 | if (os->probability == 0) { | |
5073 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
5074 | } | |
f69f713b | 5075 | |
c2d936a4 BP |
5076 | return NULL; |
5077 | } | |
5078 | ||
5079 | static void | |
5080 | format_SAMPLE(const struct ofpact_sample *a, struct ds *s) | |
5081 | { | |
b1c5bf1f QM |
5082 | ds_put_format(s, "%ssample(%s%sprobability=%s%"PRIu16 |
5083 | ",%scollector_set_id=%s%"PRIu32 | |
5084 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 5085 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
5086 | colors.paren, colors.end, |
5087 | colors.param, colors.end, a->probability, | |
5088 | colors.param, colors.end, a->collector_set_id, | |
5089 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
5090 | colors.param, colors.end, a->obs_point_id); |
5091 | if (a->sampling_port != OFPP_NONE) { | |
5092 | ds_put_format(s, ",%ssampling_port=%s%"PRIu16, | |
5093 | colors.param, colors.end, a->sampling_port); | |
5094 | } | |
4930ea56 BP |
5095 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
5096 | ds_put_format(s, ",%singress%s", colors.param, colors.end); | |
5097 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { | |
5098 | ds_put_format(s, ",%segress%s", colors.param, colors.end); | |
5099 | } | |
f69f713b | 5100 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
5101 | } |
5102 | \f | |
d4abaff5 BP |
5103 | /* debug_recirc instruction. */ |
5104 | ||
5105 | static bool enable_debug; | |
5106 | ||
5107 | void | |
5108 | ofpact_dummy_enable(void) | |
5109 | { | |
5110 | enable_debug = true; | |
5111 | } | |
5112 | ||
5113 | static enum ofperr | |
5114 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
5115 | { | |
5116 | if (!enable_debug) { | |
5117 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5118 | } | |
5119 | ||
5120 | ofpact_put_DEBUG_RECIRC(out); | |
5121 | return 0; | |
5122 | } | |
5123 | ||
5124 | static void | |
5125 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
5126 | enum ofp_version ofp_version OVS_UNUSED, | |
5127 | struct ofpbuf *out) | |
5128 | { | |
5129 | put_NXAST_DEBUG_RECIRC(out); | |
5130 | } | |
5131 | ||
5132 | static char * OVS_WARN_UNUSED_RESULT | |
5133 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, | |
5134 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5135 | { | |
5136 | ofpact_put_DEBUG_RECIRC(ofpacts); | |
5137 | return NULL; | |
5138 | } | |
5139 | ||
5140 | static void | |
5141 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
5142 | { | |
b1c5bf1f | 5143 | ds_put_format(s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 5144 | } |
07659514 JS |
5145 | |
5146 | /* Action structure for NXAST_CT. | |
5147 | * | |
5148 | * Pass traffic to the connection tracker. | |
5149 | * | |
5150 | * There are two important concepts to understanding the connection tracking | |
5151 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
5152 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
5153 | * | |
5154 | * - Packet State: | |
5155 | * | |
5156 | * Untracked packets have not yet passed through the connection tracker, | |
5157 | * and the connection state for such packets is unknown. In most cases, | |
5158 | * packets entering the OpenFlow pipeline will initially be in the | |
5159 | * untracked state. Untracked packets may become tracked by executing | |
5160 | * NXAST_CT with a "recirc_table" specified. This makes various aspects | |
5161 | * about the connection available, in particular the connection state. | |
5162 | * | |
5163 | * Tracked packets have previously passed through the connection tracker. | |
5164 | * These packets will remain tracked through until the end of the OpenFlow | |
5165 | * pipeline. Tracked packets which have NXAST_CT executed with a | |
5166 | * "recirc_table" specified will return to the tracked state. | |
5167 | * | |
5168 | * The packet state is only significant for the duration of packet | |
5169 | * processing within the OpenFlow pipeline. | |
5170 | * | |
5171 | * - Connection State: | |
5172 | * | |
5173 | * Multiple packets may be associated with a single connection. Initially, | |
5174 | * all connections are uncommitted. The connection state corresponding to | |
5175 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
5176 | * | |
5177 | * Uncommitted connections have no state stored about them. Uncommitted | |
5178 | * connections may transition into the committed state by executing | |
5179 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
5180 | * | |
5181 | * Once a connection becomes committed, information may be gathered about | |
5182 | * the connection by passing subsequent packets through the connection | |
5183 | * tracker, and the state of the connection will be stored beyond the | |
5184 | * lifetime of packet processing. | |
5185 | * | |
5186 | * Connections may transition back into the uncommitted state due to | |
5187 | * external timers, or due to the contents of packets that are sent to the | |
5188 | * connection tracker. This behaviour is outside of the scope of the | |
5189 | * OpenFlow interface. | |
5190 | * | |
5191 | * The "zone" specifies a context within which the tracking is done: | |
5192 | * | |
5193 | * The connection tracking zone is a 16-bit number. Each zone is an | |
5194 | * independent connection tracking context. The connection state for each | |
5195 | * connection is completely separate for each zone, so if a connection | |
5196 | * is committed to zone A, then it will remain uncommitted in zone B. | |
5197 | * If NXAST_CT is executed with the same zone multiple times, later | |
5198 | * executions have no effect. | |
5199 | * | |
5200 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
5201 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
5202 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
5203 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
5204 | * are the same as the acceptable nxm_header values for the 'src' field of | |
5205 | * NXAST_REG_MOVE. | |
5206 | * | |
5207 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
5208 | * connection tracking zone. | |
5209 | * | |
5210 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
5211 | * | |
5212 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
5213 | * packet will be logically cloned prior to executing this action. One | |
5214 | * copy will be sent to the connection tracker, then will be re-injected | |
5215 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
5216 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
5217 | * fields will be populated. The original instance of the packet will | |
5218 | * continue the current actions list. This can be thought of as similar to | |
5219 | * the effect of the "output" action: One copy is sent out (in this case, | |
5220 | * to the connection tracker), but the current copy continues processing. | |
5221 | * | |
5222 | * It is strongly recommended that this table is later than the current | |
5223 | * table, to prevent loops. | |
8e53fe8c | 5224 | * |
d787ad39 JS |
5225 | * The "alg" attaches protocol-specific behaviour to this action: |
5226 | * | |
5227 | * The ALG is a 16-bit number which specifies that additional | |
5228 | * processing should be applied to this traffic. | |
5229 | * | |
5230 | * Protocol | Value | Meaning | |
5231 | * -------------------------------------------------------------------- | |
5232 | * None | 0 | No protocol-specific behaviour. | |
5233 | * FTP | 21 | Parse FTP control connections and observe the | |
5234 | * | | negotiation of related data connections. | |
5235 | * Other | Other | Unsupported protocols. | |
5236 | * | |
5237 | * By way of example, if FTP control connections have this action applied | |
5238 | * with the ALG set to FTP (21), then the connection tracker will observe | |
5239 | * the negotiation of data connections. This allows the connection | |
5240 | * tracker to identify subsequent data connections as "related" to this | |
5241 | * existing connection. The "related" flag will be populated in the | |
5242 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
5243 | * specified. | |
5244 | * | |
8e53fe8c JS |
5245 | * Zero or more actions may immediately follow this action. These actions will |
5246 | * be executed within the context of the connection tracker, and they require | |
5247 | * the NX_CT_F_COMMIT flag to be set. | |
07659514 JS |
5248 | */ |
5249 | struct nx_action_conntrack { | |
5250 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5251 | ovs_be16 len; /* At least 24. */ | |
5252 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5253 | ovs_be16 subtype; /* NXAST_CT. */ | |
5254 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
5255 | * Unspecified flag bits must be zero. */ | |
5256 | ovs_be32 zone_src; /* Connection tracking context. */ | |
5257 | union { | |
5258 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
5259 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
5260 | }; | |
5261 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
5262 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
5263 | uint8_t pad[3]; /* Zeroes */ |
5264 | ovs_be16 alg; /* Well-known port number for the protocol. | |
5265 | * 0 indicates no ALG is required. */ | |
07659514 JS |
5266 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
5267 | * these is included in 'len'. */ | |
5268 | }; | |
5269 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
5270 | ||
5271 | static enum ofperr | |
5272 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
5273 | struct ofpact_conntrack *out) | |
5274 | { | |
5275 | if (nac->zone_src) { | |
5276 | enum ofperr error; | |
5277 | ||
5278 | out->zone_src.field = mf_from_nxm_header(ntohl(nac->zone_src)); | |
5279 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); | |
5280 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5281 | error = mf_check_src(&out->zone_src, NULL); | |
5282 | if (error) { | |
5283 | return error; | |
5284 | } | |
5285 | ||
5286 | if (out->zone_src.n_bits != 16) { | |
5287 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
5288 | out->zone_src.n_bits); | |
5289 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
5290 | } | |
5291 | } else { | |
5292 | out->zone_src.field = NULL; | |
5293 | out->zone_imm = ntohs(nac->zone_imm); | |
5294 | } | |
5295 | ||
5296 | return 0; | |
5297 | } | |
5298 | ||
5299 | static enum ofperr | |
5300 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
8e53fe8c | 5301 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 | 5302 | { |
8e53fe8c | 5303 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 5304 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
07659514 | 5305 | conntrack->flags = ntohs(nac->flags); |
0a2869d5 BP |
5306 | |
5307 | int error = decode_ct_zone(nac, conntrack); | |
07659514 JS |
5308 | if (error) { |
5309 | goto out; | |
5310 | } | |
5311 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 5312 | conntrack->alg = ntohs(nac->alg); |
07659514 | 5313 | |
8e53fe8c JS |
5314 | ofpbuf_pull(out, sizeof(*conntrack)); |
5315 | ||
0a2869d5 BP |
5316 | struct ofpbuf openflow = ofpbuf_const_initializer( |
5317 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
5318 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
5319 | ofp_version, | |
5320 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5321 | out, OFPACT_CT); | |
5322 | if (error) { | |
5323 | goto out; | |
5324 | } | |
5325 | ||
5326 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
5327 | out->header = &conntrack->ofpact; | |
ce058104 | 5328 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
5329 | |
5330 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
5331 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
5332 | const struct ofpact *a; |
5333 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
5334 | ||
5335 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
5336 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
5337 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
5338 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
5339 | "other than NAT without arguments are specified."); | |
5340 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
5341 | goto out; | |
5342 | } | |
5343 | } | |
8e53fe8c JS |
5344 | } |
5345 | ||
07659514 | 5346 | out: |
8e53fe8c | 5347 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
5348 | return error; |
5349 | } | |
5350 | ||
5351 | static void | |
5352 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 5353 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
5354 | { |
5355 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
5356 | const size_t ofs = out->size; |
5357 | size_t len; | |
07659514 JS |
5358 | |
5359 | nac = put_NXAST_CT(out); | |
5360 | nac->flags = htons(conntrack->flags); | |
5361 | if (conntrack->zone_src.field) { | |
5362 | nac->zone_src = htonl(mf_nxm_header(conntrack->zone_src.field->id)); | |
5363 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, | |
5364 | conntrack->zone_src.n_bits); | |
5365 | } else { | |
5366 | nac->zone_src = htonl(0); | |
5367 | nac->zone_imm = htons(conntrack->zone_imm); | |
5368 | } | |
5369 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 5370 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
5371 | |
5372 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
5373 | ofpact_ct_get_action_len(conntrack), | |
5374 | out, ofp_version); | |
5375 | len += sizeof(*nac); | |
5376 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
5377 | nac->len = htons(len); | |
07659514 JS |
5378 | } |
5379 | ||
9ac0aada JR |
5380 | static char * OVS_WARN_UNUSED_RESULT parse_NAT(char *arg, struct ofpbuf *, |
5381 | enum ofputil_protocol * OVS_UNUSED); | |
5382 | ||
07659514 JS |
5383 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
5384 | * action to 'ofpacts'. | |
5385 | * | |
5386 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5387 | * error. The caller is responsible for freeing the returned string. */ | |
5388 | static char * OVS_WARN_UNUSED_RESULT | |
5389 | parse_CT(char *arg, struct ofpbuf *ofpacts, | |
8e53fe8c | 5390 | enum ofputil_protocol *usable_protocols) |
07659514 | 5391 | { |
8e53fe8c | 5392 | const size_t ct_offset = ofpacts_pull(ofpacts); |
07659514 JS |
5393 | struct ofpact_conntrack *oc; |
5394 | char *error = NULL; | |
5395 | char *key, *value; | |
5396 | ||
5397 | oc = ofpact_put_CT(ofpacts); | |
5398 | oc->flags = 0; | |
5399 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
5400 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
5401 | if (!strcmp(key, "commit")) { | |
5402 | oc->flags |= NX_CT_F_COMMIT; | |
5403 | } else if (!strcmp(key, "table")) { | |
5404 | error = str_to_u8(value, "recirc_table", &oc->recirc_table); | |
5405 | if (!error && oc->recirc_table == NX_CT_RECIRC_NONE) { | |
5406 | error = xasprintf("invalid table %#"PRIx16, oc->recirc_table); | |
5407 | } | |
5408 | } else if (!strcmp(key, "zone")) { | |
5409 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
5410 | ||
5411 | if (error) { | |
5412 | free(error); | |
5413 | error = mf_parse_subfield(&oc->zone_src, value); | |
5414 | if (error) { | |
5415 | return error; | |
5416 | } | |
5417 | } | |
d787ad39 JS |
5418 | } else if (!strcmp(key, "alg")) { |
5419 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada JR |
5420 | } else if (!strcmp(key, "nat")) { |
5421 | const size_t nat_offset = ofpacts_pull(ofpacts); | |
5422 | ||
5423 | error = parse_NAT(value, ofpacts, usable_protocols); | |
9ac0aada JR |
5424 | /* Update CT action pointer and length. */ |
5425 | ofpacts->header = ofpbuf_push_uninit(ofpacts, nat_offset); | |
5426 | oc = ofpacts->header; | |
8e53fe8c JS |
5427 | } else if (!strcmp(key, "exec")) { |
5428 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
5429 | * nesting can be handled transparently. */ | |
76e3e669 | 5430 | enum ofputil_protocol usable_protocols2; |
9ac0aada | 5431 | const size_t exec_offset = ofpacts_pull(ofpacts); |
76e3e669 | 5432 | |
76e3e669 JR |
5433 | /* Initializes 'usable_protocol2', fold it back to |
5434 | * '*usable_protocols' afterwards, so that we do not lose | |
5435 | * restrictions already in there. */ | |
5436 | error = ofpacts_parse_copy(value, ofpacts, &usable_protocols2, | |
5437 | false, OFPACT_CT); | |
5438 | *usable_protocols &= usable_protocols2; | |
9ac0aada | 5439 | ofpacts->header = ofpbuf_push_uninit(ofpacts, exec_offset); |
8e53fe8c | 5440 | oc = ofpacts->header; |
07659514 JS |
5441 | } else { |
5442 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
5443 | } | |
5444 | if (error) { | |
5445 | break; | |
5446 | } | |
5447 | } | |
5448 | ||
ce058104 | 5449 | ofpact_finish_CT(ofpacts, &oc); |
8e53fe8c | 5450 | ofpbuf_push_uninit(ofpacts, ct_offset); |
07659514 JS |
5451 | return error; |
5452 | } | |
5453 | ||
d787ad39 JS |
5454 | static void |
5455 | format_alg(int port, struct ds *s) | |
5456 | { | |
40c7b2fc JS |
5457 | switch(port) { |
5458 | case IPPORT_FTP: | |
b1c5bf1f | 5459 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
5460 | break; |
5461 | case IPPORT_TFTP: | |
5462 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
5463 | break; | |
5464 | case 0: | |
5465 | /* Don't print. */ | |
5466 | break; | |
5467 | default: | |
b1c5bf1f | 5468 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 5469 | break; |
d787ad39 JS |
5470 | } |
5471 | } | |
5472 | ||
9ac0aada JR |
5473 | static void format_NAT(const struct ofpact_nat *a, struct ds *ds); |
5474 | ||
07659514 JS |
5475 | static void |
5476 | format_CT(const struct ofpact_conntrack *a, struct ds *s) | |
5477 | { | |
b1c5bf1f | 5478 | ds_put_format(s, "%sct(%s", colors.paren, colors.end); |
07659514 | 5479 | if (a->flags & NX_CT_F_COMMIT) { |
b1c5bf1f | 5480 | ds_put_format(s, "%scommit%s,", colors.value, colors.end); |
07659514 JS |
5481 | } |
5482 | if (a->recirc_table != NX_CT_RECIRC_NONE) { | |
b1c5bf1f QM |
5483 | ds_put_format(s, "%stable=%s%"PRIu8",", |
5484 | colors.special, colors.end, a->recirc_table); | |
07659514 JS |
5485 | } |
5486 | if (a->zone_src.field) { | |
b1c5bf1f | 5487 | ds_put_format(s, "%szone=%s", colors.param, colors.end); |
07659514 JS |
5488 | mf_format_subfield(&a->zone_src, s); |
5489 | ds_put_char(s, ','); | |
5490 | } else if (a->zone_imm) { | |
b1c5bf1f QM |
5491 | ds_put_format(s, "%szone=%s%"PRIu16",", |
5492 | colors.param, colors.end, a->zone_imm); | |
07659514 | 5493 | } |
9ac0aada JR |
5494 | /* If the first action is a NAT action, format it outside of the 'exec' |
5495 | * envelope. */ | |
5496 | const struct ofpact *action = a->actions; | |
5497 | size_t actions_len = ofpact_ct_get_action_len(a); | |
5498 | if (actions_len && action->type == OFPACT_NAT) { | |
5499 | format_NAT(ofpact_get_NAT(action), s); | |
5500 | ds_put_char(s, ','); | |
5501 | actions_len -= OFPACT_ALIGN(action->len); | |
5502 | action = ofpact_next(action); | |
5503 | } | |
5504 | if (actions_len) { | |
b1c5bf1f | 5505 | ds_put_format(s, "%sexec(%s", colors.paren, colors.end); |
9ac0aada | 5506 | ofpacts_format(action, actions_len, s); |
b1c5bf1f | 5507 | ds_put_format(s, "%s),%s", colors.paren, colors.end); |
8e53fe8c | 5508 | } |
d787ad39 | 5509 | format_alg(a->alg, s); |
07659514 | 5510 | ds_chomp(s, ','); |
b1c5bf1f | 5511 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
07659514 | 5512 | } |
9ac0aada JR |
5513 | \f |
5514 | /* NAT action. */ | |
5515 | ||
5516 | /* Which optional fields are present? */ | |
5517 | enum nx_nat_range { | |
5518 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
5519 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
5520 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
5521 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
5522 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
5523 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
5524 | }; | |
5525 | ||
5526 | /* Action structure for NXAST_NAT. */ | |
5527 | struct nx_action_nat { | |
5528 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5529 | ovs_be16 len; /* At least 16. */ | |
5530 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5531 | ovs_be16 subtype; /* NXAST_NAT. */ | |
5532 | uint8_t pad[2]; /* Must be zero. */ | |
5533 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
5534 | * Unspecified flag bits must be zero. */ | |
5535 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
5536 | /* Followed by optional parameters as specified by 'range_present' */ | |
5537 | }; | |
5538 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
5539 | ||
5540 | static void | |
5541 | encode_NAT(const struct ofpact_nat *nat, | |
5542 | enum ofp_version ofp_version OVS_UNUSED, | |
5543 | struct ofpbuf *out) | |
5544 | { | |
5545 | struct nx_action_nat *nan; | |
5546 | const size_t ofs = out->size; | |
5547 | uint16_t range_present = 0; | |
5548 | ||
5549 | nan = put_NXAST_NAT(out); | |
5550 | nan->flags = htons(nat->flags); | |
5551 | if (nat->range_af == AF_INET) { | |
5552 | if (nat->range.addr.ipv4.min) { | |
5553 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
5554 | *min = nat->range.addr.ipv4.min; | |
5555 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
5556 | } | |
5557 | if (nat->range.addr.ipv4.max) { | |
5558 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
5559 | *max = nat->range.addr.ipv4.max; | |
5560 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
5561 | } | |
5562 | } else if (nat->range_af == AF_INET6) { | |
5563 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
5564 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
5565 | *min = nat->range.addr.ipv6.min; | |
5566 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
5567 | } | |
5568 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
5569 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
5570 | *max = nat->range.addr.ipv6.max; | |
5571 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
5572 | } | |
5573 | } | |
5574 | if (nat->range_af != AF_UNSPEC) { | |
5575 | if (nat->range.proto.min) { | |
5576 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
5577 | *min = htons(nat->range.proto.min); | |
5578 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
5579 | } | |
5580 | if (nat->range.proto.max) { | |
5581 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
5582 | *max = htons(nat->range.proto.max); | |
5583 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
5584 | } | |
5585 | } | |
5586 | pad_ofpat(out, ofs); | |
5587 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
5588 | nan->range_present = htons(range_present); | |
5589 | } | |
5590 | ||
5591 | static enum ofperr | |
5592 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
5593 | enum ofp_version ofp_version OVS_UNUSED, | |
5594 | struct ofpbuf *out) | |
5595 | { | |
5596 | struct ofpact_nat *nat; | |
5597 | uint16_t range_present = ntohs(nan->range_present); | |
5598 | const char *opts = (char *)(nan + 1); | |
5599 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
5600 | ||
5601 | nat = ofpact_put_NAT(out); | |
5602 | nat->flags = ntohs(nan->flags); | |
5603 | ||
ae8b9260 JR |
5604 | /* Check for unknown or mutually exclusive flags. */ |
5605 | if ((nat->flags & ~NX_NAT_F_MASK) | |
5606 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
5607 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
5608 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
5609 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5610 | } | |
5611 | ||
9ac0aada JR |
5612 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
5613 | (LEN >= sizeof(TYPE) \ | |
5614 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
5615 | SRC += sizeof(TYPE)) \ | |
5616 | : NULL) | |
5617 | ||
5618 | nat->range_af = AF_UNSPEC; | |
5619 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
5620 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
5621 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5622 | } | |
5623 | ||
5624 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
5625 | || !nat->range.addr.ipv4.min) { | |
5626 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5627 | } | |
5628 | ||
5629 | nat->range_af = AF_INET; | |
5630 | ||
5631 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
5632 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
5633 | ovs_be32)) { | |
5634 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5635 | } | |
5636 | if (ntohl(nat->range.addr.ipv4.max) | |
5637 | < ntohl(nat->range.addr.ipv4.min)) { | |
5638 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5639 | } | |
5640 | } | |
5641 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
5642 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5643 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
5644 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
5645 | struct in6_addr) | |
5646 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
5647 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5648 | } | |
5649 | ||
5650 | nat->range_af = AF_INET6; | |
5651 | ||
5652 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
5653 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
5654 | struct in6_addr)) { | |
5655 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5656 | } | |
5657 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
5658 | sizeof(struct in6_addr)) < 0) { | |
5659 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5660 | } | |
5661 | } | |
5662 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
5663 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5664 | } | |
5665 | ||
5666 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
5667 | ovs_be16 proto; | |
5668 | ||
5669 | if (nat->range_af == AF_UNSPEC) { | |
5670 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5671 | } | |
5672 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
5673 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5674 | } | |
5675 | nat->range.proto.min = ntohs(proto); | |
5676 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
5677 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
5678 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5679 | } | |
5680 | nat->range.proto.max = ntohs(proto); | |
5681 | if (nat->range.proto.max < nat->range.proto.min) { | |
5682 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5683 | } | |
5684 | } | |
5685 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
5686 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5687 | } | |
5688 | ||
5689 | return 0; | |
5690 | } | |
5691 | ||
5692 | static void | |
5693 | format_NAT(const struct ofpact_nat *a, struct ds *ds) | |
5694 | { | |
b1c5bf1f | 5695 | ds_put_format(ds, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
5696 | |
5697 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
b1c5bf1f QM |
5698 | ds_put_format(ds, "%s(%s", colors.paren, colors.end); |
5699 | ds_put_format(ds, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
5700 | colors.param, colors.end); | |
9ac0aada JR |
5701 | |
5702 | if (a->range_af != AF_UNSPEC) { | |
b1c5bf1f | 5703 | ds_put_format(ds, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
5704 | |
5705 | if (a->range_af == AF_INET) { | |
5706 | ds_put_format(ds, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); | |
5707 | ||
5708 | if (a->range.addr.ipv4.max | |
5709 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
5710 | ds_put_format(ds, "-"IP_FMT, | |
5711 | IP_ARGS(a->range.addr.ipv4.max)); | |
5712 | } | |
5713 | } else if (a->range_af == AF_INET6) { | |
5714 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, ds, | |
5715 | a->range.proto.min); | |
5716 | ||
5717 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
5718 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
5719 | sizeof(struct in6_addr)) != 0) { | |
5720 | ds_put_char(ds, '-'); | |
5721 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, ds, | |
5722 | a->range.proto.min); | |
5723 | } | |
5724 | } | |
5725 | if (a->range.proto.min) { | |
5726 | ds_put_char(ds, ':'); | |
5727 | ds_put_format(ds, "%"PRIu16, a->range.proto.min); | |
5728 | ||
5729 | if (a->range.proto.max | |
5730 | && a->range.proto.max != a->range.proto.min) { | |
5731 | ds_put_format(ds, "-%"PRIu16, a->range.proto.max); | |
5732 | } | |
5733 | } | |
5734 | ds_put_char(ds, ','); | |
5735 | ||
5736 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
b1c5bf1f QM |
5737 | ds_put_format(ds, "%spersistent%s,", |
5738 | colors.value, colors.end); | |
9ac0aada JR |
5739 | } |
5740 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
b1c5bf1f | 5741 | ds_put_format(ds, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
5742 | } |
5743 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
b1c5bf1f | 5744 | ds_put_format(ds, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
5745 | } |
5746 | } | |
5747 | ds_chomp(ds, ','); | |
b1c5bf1f | 5748 | ds_put_format(ds, "%s)%s", colors.paren, colors.end); |
9ac0aada JR |
5749 | } |
5750 | } | |
5751 | ||
5752 | static char * OVS_WARN_UNUSED_RESULT | |
5753 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
5754 | { | |
5755 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
5756 | int n = 0; | |
5757 | ||
5758 | on->range_af = AF_UNSPEC; | |
5759 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
5760 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
5761 | on->range_af = AF_INET; | |
5762 | ||
5763 | if (s[n] == '-') { | |
5764 | n++; | |
5765 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
5766 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
5767 | || (ntohl(on->range.addr.ipv4.max) | |
5768 | < ntohl(on->range.addr.ipv4.min))) { | |
5769 | goto error; | |
5770 | } | |
5771 | } | |
5772 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
5773 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
5774 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
5775 | on->range_af = AF_INET6; | |
5776 | ||
5777 | if (s[n] == '-') { | |
5778 | n++; | |
5779 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
5780 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
5781 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
5782 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
5783 | sizeof on->range.addr.ipv6.max) < 0) { | |
5784 | goto error; | |
5785 | } | |
5786 | } | |
5787 | } | |
5788 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
5789 | n++; | |
5790 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
5791 | goto error; | |
5792 | } | |
5793 | if (s[n] == '-') { | |
5794 | n++; | |
5795 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
5796 | || on->range.proto.max < on->range.proto.min) { | |
5797 | goto error; | |
5798 | } | |
5799 | } | |
5800 | } | |
5801 | if (strlen(s) != n) { | |
5802 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
5803 | &s[n], s, n); | |
5804 | } | |
5805 | return NULL; | |
5806 | error: | |
5807 | return xasprintf("invalid nat range \"%s\"", s); | |
5808 | } | |
5809 | ||
5810 | ||
5811 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
5812 | * action to 'ofpacts'. | |
5813 | * | |
5814 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5815 | * error. The caller is responsible for freeing the returned string. */ | |
5816 | static char * OVS_WARN_UNUSED_RESULT | |
5817 | parse_NAT(char *arg, struct ofpbuf *ofpacts, | |
5818 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5819 | { | |
5820 | struct ofpact_nat *on = ofpact_put_NAT(ofpacts); | |
5821 | char *key, *value; | |
5822 | ||
5823 | on->flags = 0; | |
5824 | on->range_af = AF_UNSPEC; | |
5825 | ||
5826 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
5827 | char *error = NULL; | |
5828 | ||
5829 | if (!strcmp(key, "src")) { | |
5830 | on->flags |= NX_NAT_F_SRC; | |
5831 | error = str_to_nat_range(value, on); | |
5832 | } else if (!strcmp(key, "dst")) { | |
5833 | on->flags |= NX_NAT_F_DST; | |
5834 | error = str_to_nat_range(value, on); | |
5835 | } else if (!strcmp(key, "persistent")) { | |
5836 | on->flags |= NX_NAT_F_PERSISTENT; | |
5837 | } else if (!strcmp(key, "hash")) { | |
5838 | on->flags |= NX_NAT_F_PROTO_HASH; | |
5839 | } else if (!strcmp(key, "random")) { | |
5840 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
5841 | } else { | |
5842 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
5843 | key); | |
5844 | } | |
5845 | if (error) { | |
5846 | return error; | |
5847 | } | |
5848 | } | |
5849 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 5850 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
5851 | } |
5852 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
5853 | if (on->flags) { | |
ae8b9260 | 5854 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
5855 | } |
5856 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 5857 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
5858 | } |
5859 | } | |
ae8b9260 JR |
5860 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
5861 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
5862 | } | |
5863 | ||
9ac0aada JR |
5864 | return NULL; |
5865 | } | |
5866 | ||
aaca4fe0 WT |
5867 | /* Truncate output action. */ |
5868 | struct nx_action_output_trunc { | |
5869 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5870 | ovs_be16 len; /* At least 16. */ | |
5871 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5872 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
5873 | ovs_be16 port; /* Output port */ | |
5874 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
5875 | }; | |
5876 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
5877 | ||
5878 | static enum ofperr | |
5879 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
5880 | enum ofp_version ofp_version OVS_UNUSED, | |
5881 | struct ofpbuf *out) | |
5882 | { | |
5883 | struct ofpact_output_trunc *output_trunc; | |
5884 | ||
5885 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
5886 | output_trunc->max_len = ntohl(natrc->max_len); | |
5887 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
5888 | ||
5889 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
5890 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5891 | } | |
5892 | return 0; | |
5893 | } | |
5894 | ||
5895 | static void | |
5896 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
5897 | enum ofp_version ofp_version OVS_UNUSED, | |
5898 | struct ofpbuf *out) | |
5899 | { | |
5900 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
5901 | ||
5902 | natrc->max_len = htonl(output_trunc->max_len); | |
5903 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
5904 | } | |
5905 | ||
5906 | static char * OVS_WARN_UNUSED_RESULT | |
5907 | parse_OUTPUT_TRUNC(const char *arg, struct ofpbuf *ofpacts OVS_UNUSED, | |
5908 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5909 | { | |
5910 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
5911 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
5912 | return xasprintf("unknown action %s", arg); | |
5913 | } | |
5914 | ||
5915 | static void | |
5916 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, struct ds *s) | |
5917 | { | |
5918 | ds_put_format(s, "%soutput%s(port=%"PRIu16",max_len=%"PRIu32")", | |
5919 | colors.special, colors.end, a->port, a->max_len); | |
5920 | } | |
5921 | ||
d4abaff5 | 5922 | \f |
c2d936a4 BP |
5923 | /* Meter instruction. */ |
5924 | ||
5925 | static void | |
5926 | encode_METER(const struct ofpact_meter *meter, | |
5927 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5928 | { | |
5929 | if (ofp_version >= OFP13_VERSION) { | |
5930 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
5931 | } | |
5932 | } | |
5933 | ||
cab50449 | 5934 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5935 | parse_METER(char *arg, struct ofpbuf *ofpacts, |
5936 | enum ofputil_protocol *usable_protocols) | |
5937 | { | |
5938 | *usable_protocols &= OFPUTIL_P_OF13_UP; | |
5939 | return str_to_u32(arg, &ofpact_put_METER(ofpacts)->meter_id); | |
5940 | } | |
5941 | ||
5942 | static void | |
5943 | format_METER(const struct ofpact_meter *a, struct ds *s) | |
5944 | { | |
b1c5bf1f QM |
5945 | ds_put_format(s, "%smeter:%s%"PRIu32, |
5946 | colors.param, colors.end, a->meter_id); | |
c2d936a4 BP |
5947 | } |
5948 | \f | |
5949 | /* Clear-Actions instruction. */ | |
5950 | ||
5951 | static void | |
5952 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
5953 | enum ofp_version ofp_version OVS_UNUSED, | |
5954 | struct ofpbuf *out OVS_UNUSED) | |
5955 | { | |
5956 | if (ofp_version > OFP10_VERSION) { | |
5957 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
5958 | } | |
5959 | } | |
5960 | ||
cab50449 | 5961 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5962 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, struct ofpbuf *ofpacts, |
5963 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
5964 | { | |
5965 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
5966 | return NULL; | |
5967 | } | |
5968 | ||
5969 | static void | |
5970 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, struct ds *s) | |
5971 | { | |
b1c5bf1f | 5972 | ds_put_format(s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 BP |
5973 | } |
5974 | \f | |
5975 | /* Write-Actions instruction. */ | |
5976 | ||
5977 | static void | |
5978 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
5979 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5980 | { | |
5981 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 5982 | const size_t ofs = out->size; |
c2d936a4 BP |
5983 | |
5984 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
5985 | ofpacts_put_openflow_actions(actions->actions, | |
5986 | ofpact_nest_get_action_len(actions), | |
5987 | out, ofp_version); | |
5988 | ofpacts_update_instruction_actions(out, ofs); | |
5989 | } | |
5990 | } | |
5991 | ||
cab50449 | 5992 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
5993 | parse_WRITE_ACTIONS(char *arg, struct ofpbuf *ofpacts, |
5994 | enum ofputil_protocol *usable_protocols) | |
5995 | { | |
d824b5b7 | 5996 | size_t ofs = ofpacts_pull(ofpacts); |
c2d936a4 BP |
5997 | struct ofpact_nest *on; |
5998 | char *error; | |
c2d936a4 BP |
5999 | |
6000 | /* Add a Write-Actions instruction and then pull it off. */ | |
6001 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); | |
6002 | ofpbuf_pull(ofpacts, sizeof *on); | |
6003 | ||
6004 | /* Parse nested actions. | |
6005 | * | |
6006 | * We pulled off "write-actions" and the previous actions because the | |
6007 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
6008 | * that it doesn't actually include the nested actions. That means that | |
6009 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
6010 | * follows a Write-Actions, which is an invalid order. */ | |
d824b5b7 JS |
6011 | error = ofpacts_parse(arg, ofpacts, usable_protocols, false, |
6012 | OFPACT_WRITE_ACTIONS); | |
c2d936a4 BP |
6013 | |
6014 | /* Put the Write-Actions back on and update its length. */ | |
6015 | on = ofpbuf_push_uninit(ofpacts, sizeof *on); | |
6fd6ed71 | 6016 | on->ofpact.len = ofpacts->size; |
c2d936a4 BP |
6017 | |
6018 | /* Put any previous actions or instructions back on. */ | |
6019 | ofpbuf_push_uninit(ofpacts, ofs); | |
6020 | ||
6021 | return error; | |
6022 | } | |
6023 | ||
6024 | static void | |
6025 | format_WRITE_ACTIONS(const struct ofpact_nest *a, struct ds *s) | |
6026 | { | |
b1c5bf1f | 6027 | ds_put_format(s, "%swrite_actions(%s", colors.paren, colors.end); |
c2d936a4 | 6028 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), s); |
b1c5bf1f | 6029 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
6030 | } |
6031 | \f | |
6032 | /* Action structure for NXAST_WRITE_METADATA. | |
6033 | * | |
6034 | * Modifies the 'mask' bits of the metadata value. */ | |
6035 | struct nx_action_write_metadata { | |
6036 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6037 | ovs_be16 len; /* Length is 32. */ | |
6038 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6039 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
6040 | uint8_t zeros[6]; /* Must be zero. */ | |
6041 | ovs_be64 metadata; /* Metadata register. */ | |
6042 | ovs_be64 mask; /* Metadata mask. */ | |
6043 | }; | |
6044 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
6045 | ||
6046 | static enum ofperr | |
6047 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 6048 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
6049 | struct ofpbuf *out) |
6050 | { | |
6051 | struct ofpact_metadata *om; | |
6052 | ||
6053 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
6054 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6055 | } | |
6056 | ||
6057 | om = ofpact_put_WRITE_METADATA(out); | |
6058 | om->metadata = nawm->metadata; | |
6059 | om->mask = nawm->mask; | |
6060 | ||
6061 | return 0; | |
6062 | } | |
6063 | ||
6064 | static void | |
6065 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
6066 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6067 | { | |
6068 | if (ofp_version == OFP10_VERSION) { | |
6069 | struct nx_action_write_metadata *nawm; | |
6070 | ||
6071 | nawm = put_NXAST_WRITE_METADATA(out); | |
6072 | nawm->metadata = metadata->metadata; | |
6073 | nawm->mask = metadata->mask; | |
6074 | } else { | |
6075 | struct ofp11_instruction_write_metadata *oiwm; | |
6076 | ||
6077 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
6078 | oiwm->metadata = metadata->metadata; | |
6079 | oiwm->metadata_mask = metadata->mask; | |
6080 | } | |
6081 | } | |
6082 | ||
cab50449 | 6083 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
6084 | parse_WRITE_METADATA(char *arg, struct ofpbuf *ofpacts, |
6085 | enum ofputil_protocol *usable_protocols) | |
6086 | { | |
6087 | struct ofpact_metadata *om; | |
6088 | char *mask = strchr(arg, '/'); | |
6089 | ||
6090 | *usable_protocols &= OFPUTIL_P_NXM_OF11_UP; | |
6091 | ||
6092 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
6093 | if (mask) { | |
6094 | char *error; | |
6095 | ||
6096 | *mask = '\0'; | |
6097 | error = str_to_be64(mask + 1, &om->mask); | |
6098 | if (error) { | |
6099 | return error; | |
6100 | } | |
6101 | } else { | |
6102 | om->mask = OVS_BE64_MAX; | |
6103 | } | |
6104 | ||
6105 | return str_to_be64(arg, &om->metadata); | |
6106 | } | |
6107 | ||
6108 | static void | |
6109 | format_WRITE_METADATA(const struct ofpact_metadata *a, struct ds *s) | |
6110 | { | |
b1c5bf1f QM |
6111 | ds_put_format(s, "%swrite_metadata:%s%#"PRIx64, |
6112 | colors.param, colors.end, ntohll(a->metadata)); | |
c2d936a4 BP |
6113 | if (a->mask != OVS_BE64_MAX) { |
6114 | ds_put_format(s, "/%#"PRIx64, ntohll(a->mask)); | |
6115 | } | |
4cceacb9 | 6116 | } |
f25d0cf3 | 6117 | \f |
c2d936a4 | 6118 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
6119 | |
6120 | static void | |
c2d936a4 BP |
6121 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
6122 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 6123 | { |
c2d936a4 BP |
6124 | if (ofp_version == OFP10_VERSION) { |
6125 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 6126 | |
c2d936a4 BP |
6127 | nar = put_NXAST_RESUBMIT_TABLE(out); |
6128 | nar->table = goto_table->table_id; | |
6129 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
6130 | } else { | |
6131 | struct ofp11_instruction_goto_table *oigt; | |
6132 | ||
6133 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
6134 | oigt->table_id = goto_table->table_id; | |
6135 | memset(oigt->pad, 0, sizeof oigt->pad); | |
6136 | } | |
6137 | } | |
6138 | ||
cab50449 | 6139 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
6140 | parse_GOTO_TABLE(char *arg, struct ofpbuf *ofpacts, |
6141 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
6142 | { | |
6143 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
6144 | char *table_s = strsep(&arg, ","); | |
6145 | if (!table_s || !table_s[0]) { | |
6146 | return xstrdup("instruction goto-table needs table id"); | |
6147 | } | |
6148 | return str_to_u8(table_s, "table", &ogt->table_id); | |
6149 | } | |
6150 | ||
6151 | static void | |
6152 | format_GOTO_TABLE(const struct ofpact_goto_table *a, struct ds *s) | |
6153 | { | |
b1c5bf1f QM |
6154 | ds_put_format(s, "%sgoto_table:%s%"PRIu8, |
6155 | colors.param, colors.end, a->table_id); | |
c2d936a4 BP |
6156 | } |
6157 | \f | |
6158 | static void | |
5ad4b3f8 | 6159 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
6160 | const struct ofp_action_header *bad_action, enum ofperr error) |
6161 | { | |
6162 | if (!VLOG_DROP_WARN(&rl)) { | |
6163 | struct ds s; | |
6164 | ||
6165 | ds_init(&s); | |
5ad4b3f8 | 6166 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
6167 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
6168 | (char *)bad_action - (char *)actions, | |
6169 | ofperr_get_name(error), ds_cstr(&s)); | |
6170 | ds_destroy(&s); | |
6171 | } | |
6172 | } | |
6173 | ||
6174 | static enum ofperr | |
6175 | ofpacts_decode(const void *actions, size_t actions_len, | |
6176 | enum ofp_version ofp_version, struct ofpbuf *ofpacts) | |
6177 | { | |
0a2869d5 | 6178 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
6179 | while (openflow.size) { |
6180 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
6181 | enum ofp_raw_action_type raw; |
6182 | enum ofperr error; | |
6183 | uint64_t arg; | |
6184 | ||
6185 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
6186 | if (!error) { | |
f3cd3ac7 | 6187 | error = ofpact_decode(action, raw, ofp_version, arg, ofpacts); |
c2d936a4 BP |
6188 | } |
6189 | ||
6190 | if (error) { | |
5ad4b3f8 | 6191 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
6192 | return error; |
6193 | } | |
6194 | } | |
c2d936a4 BP |
6195 | return 0; |
6196 | } | |
6197 | ||
6198 | static enum ofperr | |
6199 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
6200 | unsigned int actions_len, | |
6201 | enum ofp_version version, | |
6202 | uint32_t allowed_ovsinsts, | |
d824b5b7 JS |
6203 | struct ofpbuf *ofpacts, |
6204 | enum ofpact_type outer_action) | |
c2d936a4 BP |
6205 | { |
6206 | const struct ofp_action_header *actions; | |
9abca1e5 | 6207 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
6208 | enum ofperr error; |
6209 | ||
c2d936a4 BP |
6210 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
6211 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
6212 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
6213 | return OFPERR_OFPBRC_BAD_LEN; | |
6214 | } | |
6215 | ||
6216 | actions = ofpbuf_try_pull(openflow, actions_len); | |
6217 | if (actions == NULL) { | |
6218 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
6219 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6220 | actions_len, openflow->size); |
c2d936a4 BP |
6221 | return OFPERR_OFPBRC_BAD_LEN; |
6222 | } | |
6223 | ||
6224 | error = ofpacts_decode(actions, actions_len, version, ofpacts); | |
6225 | if (error) { | |
9abca1e5 | 6226 | ofpacts->size = orig_size; |
c2d936a4 BP |
6227 | return error; |
6228 | } | |
6229 | ||
d824b5b7 JS |
6230 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
6231 | outer_action); | |
c2d936a4 | 6232 | if (error) { |
9abca1e5 | 6233 | ofpacts->size = orig_size; |
c2d936a4 BP |
6234 | } |
6235 | return error; | |
6236 | } | |
6237 | ||
9abca1e5 BP |
6238 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
6239 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
6240 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
6241 | * Returns 0 if successful, otherwise an OpenFlow error. |
6242 | * | |
6243 | * Actions are processed according to their OpenFlow version which | |
6244 | * is provided in the 'version' parameter. | |
6245 | * | |
6246 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
6247 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
6248 | * function. | |
6249 | * | |
6250 | * The parsed actions are valid generically, but they may not be valid in a | |
6251 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
6252 | * generically, but specific datapaths may only support port numbers in a | |
6253 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
6254 | * valid in a specific context. */ | |
6255 | enum ofperr | |
6256 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
6257 | unsigned int actions_len, | |
6258 | enum ofp_version version, | |
6259 | struct ofpbuf *ofpacts) | |
6260 | { | |
6261 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
6262 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
d824b5b7 | 6263 | ofpacts, 0); |
c2d936a4 BP |
6264 | } |
6265 | \f | |
6266 | /* OpenFlow 1.1 actions. */ | |
6267 | ||
6268 | ||
6269 | /* True if an action sets the value of a field | |
6270 | * in a way that is compatibile with the action set. | |
1b0ee636 | 6271 | * The field can be set via either a set or a move action. |
c2d936a4 BP |
6272 | * False otherwise. */ |
6273 | static bool | |
1b0ee636 | 6274 | ofpact_is_set_or_move_action(const struct ofpact *a) |
c2d936a4 BP |
6275 | { |
6276 | switch (a->type) { | |
6277 | case OFPACT_SET_FIELD: | |
1b0ee636 | 6278 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
6279 | case OFPACT_SET_ETH_DST: |
6280 | case OFPACT_SET_ETH_SRC: | |
6281 | case OFPACT_SET_IP_DSCP: | |
6282 | case OFPACT_SET_IP_ECN: | |
6283 | case OFPACT_SET_IP_TTL: | |
6284 | case OFPACT_SET_IPV4_DST: | |
6285 | case OFPACT_SET_IPV4_SRC: | |
6286 | case OFPACT_SET_L4_DST_PORT: | |
6287 | case OFPACT_SET_L4_SRC_PORT: | |
6288 | case OFPACT_SET_MPLS_LABEL: | |
6289 | case OFPACT_SET_MPLS_TC: | |
6290 | case OFPACT_SET_MPLS_TTL: | |
6291 | case OFPACT_SET_QUEUE: | |
6292 | case OFPACT_SET_TUNNEL: | |
6293 | case OFPACT_SET_VLAN_PCP: | |
6294 | case OFPACT_SET_VLAN_VID: | |
6295 | return true; | |
6296 | case OFPACT_BUNDLE: | |
6297 | case OFPACT_CLEAR_ACTIONS: | |
07659514 | 6298 | case OFPACT_CT: |
7ae62a67 | 6299 | case OFPACT_CLONE: |
9ac0aada | 6300 | case OFPACT_NAT: |
c2d936a4 BP |
6301 | case OFPACT_CONTROLLER: |
6302 | case OFPACT_DEC_MPLS_TTL: | |
6303 | case OFPACT_DEC_TTL: | |
6304 | case OFPACT_ENQUEUE: | |
6305 | case OFPACT_EXIT: | |
e672ff9b | 6306 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
6307 | case OFPACT_FIN_TIMEOUT: |
6308 | case OFPACT_GOTO_TABLE: | |
6309 | case OFPACT_GROUP: | |
6310 | case OFPACT_LEARN: | |
18080541 | 6311 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6312 | case OFPACT_METER: |
6313 | case OFPACT_MULTIPATH: | |
6314 | case OFPACT_NOTE: | |
6315 | case OFPACT_OUTPUT: | |
6316 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 6317 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 BP |
6318 | case OFPACT_POP_MPLS: |
6319 | case OFPACT_POP_QUEUE: | |
6320 | case OFPACT_PUSH_MPLS: | |
6321 | case OFPACT_PUSH_VLAN: | |
c2d936a4 BP |
6322 | case OFPACT_RESUBMIT: |
6323 | case OFPACT_SAMPLE: | |
6324 | case OFPACT_STACK_POP: | |
6325 | case OFPACT_STACK_PUSH: | |
6326 | case OFPACT_STRIP_VLAN: | |
6327 | case OFPACT_WRITE_ACTIONS: | |
6328 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 6329 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
6330 | return false; |
6331 | default: | |
6332 | OVS_NOT_REACHED(); | |
6333 | } | |
6334 | } | |
6335 | ||
6336 | /* True if an action is allowed in the action set. | |
6337 | * False otherwise. */ | |
6338 | static bool | |
6339 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
6340 | { | |
6341 | switch (a->type) { | |
6342 | case OFPACT_DEC_MPLS_TTL: | |
6343 | case OFPACT_DEC_TTL: | |
6344 | case OFPACT_GROUP: | |
6345 | case OFPACT_OUTPUT: | |
aaca4fe0 | 6346 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 BP |
6347 | case OFPACT_POP_MPLS: |
6348 | case OFPACT_PUSH_MPLS: | |
6349 | case OFPACT_PUSH_VLAN: | |
1b0ee636 | 6350 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
6351 | case OFPACT_SET_FIELD: |
6352 | case OFPACT_SET_ETH_DST: | |
6353 | case OFPACT_SET_ETH_SRC: | |
6354 | case OFPACT_SET_IP_DSCP: | |
6355 | case OFPACT_SET_IP_ECN: | |
6356 | case OFPACT_SET_IP_TTL: | |
6357 | case OFPACT_SET_IPV4_DST: | |
6358 | case OFPACT_SET_IPV4_SRC: | |
6359 | case OFPACT_SET_L4_DST_PORT: | |
6360 | case OFPACT_SET_L4_SRC_PORT: | |
6361 | case OFPACT_SET_MPLS_LABEL: | |
6362 | case OFPACT_SET_MPLS_TC: | |
6363 | case OFPACT_SET_MPLS_TTL: | |
6364 | case OFPACT_SET_QUEUE: | |
6365 | case OFPACT_SET_TUNNEL: | |
6366 | case OFPACT_SET_VLAN_PCP: | |
6367 | case OFPACT_SET_VLAN_VID: | |
6368 | case OFPACT_STRIP_VLAN: | |
6369 | return true; | |
6370 | ||
6371 | /* In general these actions are excluded because they are not part of | |
6372 | * the OpenFlow specification nor map to actions that are defined in | |
6373 | * the specification. Thus the order in which they should be applied | |
6374 | * in the action set is undefined. */ | |
6375 | case OFPACT_BUNDLE: | |
7ae62a67 | 6376 | case OFPACT_CLONE: |
c2d936a4 | 6377 | case OFPACT_CONTROLLER: |
07659514 | 6378 | case OFPACT_CT: |
9ac0aada | 6379 | case OFPACT_NAT: |
c2d936a4 BP |
6380 | case OFPACT_ENQUEUE: |
6381 | case OFPACT_EXIT: | |
e672ff9b | 6382 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
6383 | case OFPACT_FIN_TIMEOUT: |
6384 | case OFPACT_LEARN: | |
18080541 | 6385 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6386 | case OFPACT_MULTIPATH: |
6387 | case OFPACT_NOTE: | |
6388 | case OFPACT_OUTPUT_REG: | |
6389 | case OFPACT_POP_QUEUE: | |
c2d936a4 BP |
6390 | case OFPACT_RESUBMIT: |
6391 | case OFPACT_SAMPLE: | |
6392 | case OFPACT_STACK_POP: | |
6393 | case OFPACT_STACK_PUSH: | |
d4abaff5 | 6394 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
6395 | |
6396 | /* The action set may only include actions and thus | |
6397 | * may not include any instructions */ | |
6398 | case OFPACT_CLEAR_ACTIONS: | |
6399 | case OFPACT_GOTO_TABLE: | |
6400 | case OFPACT_METER: | |
6401 | case OFPACT_WRITE_ACTIONS: | |
6402 | case OFPACT_WRITE_METADATA: | |
6403 | return false; | |
6404 | default: | |
6405 | OVS_NOT_REACHED(); | |
6406 | } | |
f25d0cf3 BP |
6407 | } |
6408 | ||
c2d936a4 | 6409 | /* Append ofpact 'a' onto the tail of 'out' */ |
f25d0cf3 | 6410 | static void |
c2d936a4 | 6411 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) |
f25d0cf3 | 6412 | { |
c2d936a4 | 6413 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); |
f25d0cf3 BP |
6414 | } |
6415 | ||
c2d936a4 BP |
6416 | /* Copies the last ofpact whose type is 'filter' from 'in' to 'out'. */ |
6417 | static bool | |
6418 | ofpacts_copy_last(struct ofpbuf *out, const struct ofpbuf *in, | |
6419 | enum ofpact_type filter) | |
f25d0cf3 | 6420 | { |
c2d936a4 BP |
6421 | const struct ofpact *target; |
6422 | const struct ofpact *a; | |
f25d0cf3 | 6423 | |
c2d936a4 | 6424 | target = NULL; |
6fd6ed71 | 6425 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
6426 | if (a->type == filter) { |
6427 | target = a; | |
6428 | } | |
6429 | } | |
6430 | if (target) { | |
6431 | ofpact_copy(out, target); | |
f25d0cf3 | 6432 | } |
c2d936a4 | 6433 | return target != NULL; |
f25d0cf3 BP |
6434 | } |
6435 | ||
c2d936a4 BP |
6436 | /* Append all ofpacts, for which 'filter' returns true, from 'in' to 'out'. |
6437 | * The order of appended ofpacts is preserved between 'in' and 'out' */ | |
4cceacb9 | 6438 | static void |
c2d936a4 BP |
6439 | ofpacts_copy_all(struct ofpbuf *out, const struct ofpbuf *in, |
6440 | bool (*filter)(const struct ofpact *)) | |
4cceacb9 | 6441 | { |
c2d936a4 | 6442 | const struct ofpact *a; |
4cceacb9 | 6443 | |
6fd6ed71 | 6444 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
6445 | if (filter(a)) { |
6446 | ofpact_copy(out, a); | |
6447 | } | |
6448 | } | |
4cceacb9 JS |
6449 | } |
6450 | ||
c2d936a4 BP |
6451 | /* Reads 'action_set', which contains ofpacts accumulated by |
6452 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
6453 | * executed directly into 'action_list'. (These names correspond to the | |
6454 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
6455 | * | |
6456 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 6457 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
6458 | * specification. |
6459 | * | |
6460 | * Exceptions: | |
6461 | * + output action is only appended if no group action was present in 'in'. | |
6462 | * + As a simplification all set actions are copied in the order the are | |
6463 | * provided in 'in' as many set actions applied to a field has the same | |
6464 | * affect as only applying the last action that sets a field and | |
6465 | * duplicates are removed by do_xlate_actions(). | |
6466 | * This has an unwanted side-effect of compsoting multiple | |
6467 | * LOAD_REG actions that touch different regions of the same field. */ | |
6468 | void | |
6469 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
6470 | const struct ofpbuf *action_set) | |
f25d0cf3 | 6471 | { |
c2d936a4 BP |
6472 | /* The OpenFlow spec "Action Set" section specifies this order. */ |
6473 | ofpacts_copy_last(action_list, action_set, OFPACT_STRIP_VLAN); | |
6474 | ofpacts_copy_last(action_list, action_set, OFPACT_POP_MPLS); | |
6475 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_MPLS); | |
6476 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_VLAN); | |
6477 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_TTL); | |
6478 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_MPLS_TTL); | |
1b0ee636 | 6479 | ofpacts_copy_all(action_list, action_set, ofpact_is_set_or_move_action); |
c2d936a4 | 6480 | ofpacts_copy_last(action_list, action_set, OFPACT_SET_QUEUE); |
f25d0cf3 | 6481 | |
c2d936a4 BP |
6482 | /* If both OFPACT_GROUP and OFPACT_OUTPUT are present, OpenFlow says that |
6483 | * we should execute only OFPACT_GROUP. | |
6484 | * | |
6485 | * If neither OFPACT_GROUP nor OFPACT_OUTPUT is present, then we can drop | |
6486 | * all the actions because there's no point in modifying a packet that will | |
6487 | * not be sent anywhere. */ | |
6488 | if (!ofpacts_copy_last(action_list, action_set, OFPACT_GROUP) && | |
2e34a6a3 | 6489 | !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT) && |
2c66ebe4 JR |
6490 | !ofpacts_copy_last(action_list, action_set, OFPACT_RESUBMIT) && |
6491 | !ofpacts_copy_last(action_list, action_set, OFPACT_CT)) { | |
c2d936a4 | 6492 | ofpbuf_clear(action_list); |
f25d0cf3 | 6493 | } |
f25d0cf3 BP |
6494 | } |
6495 | ||
f25d0cf3 | 6496 | |
c2d936a4 BP |
6497 | static enum ofperr |
6498 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
6499 | size_t n_in, enum ofp_version version, | |
6500 | struct ofpbuf *out) | |
c2d967a5 | 6501 | { |
c2d936a4 BP |
6502 | enum ofperr error; |
6503 | struct ofpact *a; | |
6fd6ed71 | 6504 | size_t start = out->size; |
c2d967a5 | 6505 | |
c2d936a4 | 6506 | error = ofpacts_decode(in, n_in, version, out); |
c2d967a5 | 6507 | |
c2d936a4 BP |
6508 | if (error) { |
6509 | return error; | |
6510 | } | |
6511 | ||
6fd6ed71 | 6512 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
6513 | if (!ofpact_is_allowed_in_actions_set(a)) { |
6514 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
6515 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
6516 | } |
6517 | } | |
c2d936a4 BP |
6518 | |
6519 | return 0; | |
c2d967a5 | 6520 | } |
c2d936a4 BP |
6521 | \f |
6522 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 6523 | |
c2d936a4 BP |
6524 | struct instruction_type_info { |
6525 | enum ovs_instruction_type type; | |
6526 | const char *name; | |
6527 | }; | |
6528 | ||
6529 | static const struct instruction_type_info inst_info[] = { | |
6530 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
6531 | OVS_INSTRUCTIONS | |
6532 | #undef DEFINE_INST | |
6533 | }; | |
6534 | ||
6535 | const char * | |
6536 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 6537 | { |
c2d936a4 | 6538 | return inst_info[type].name; |
f25d0cf3 BP |
6539 | } |
6540 | ||
c2d936a4 BP |
6541 | int |
6542 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 6543 | { |
c2d936a4 BP |
6544 | const struct instruction_type_info *p; |
6545 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
6546 | if (!strcasecmp(name, p->name)) { | |
6547 | return p->type; | |
6548 | } | |
6549 | } | |
6550 | return -1; | |
29089a54 RL |
6551 | } |
6552 | ||
c2d936a4 BP |
6553 | enum ovs_instruction_type |
6554 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 6555 | { |
c2d936a4 BP |
6556 | switch (type) { |
6557 | case OFPACT_METER: | |
6558 | return OVSINST_OFPIT13_METER; | |
6559 | case OFPACT_CLEAR_ACTIONS: | |
6560 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
6561 | case OFPACT_WRITE_ACTIONS: | |
6562 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
6563 | case OFPACT_WRITE_METADATA: | |
6564 | return OVSINST_OFPIT11_WRITE_METADATA; | |
6565 | case OFPACT_GOTO_TABLE: | |
6566 | return OVSINST_OFPIT11_GOTO_TABLE; | |
6567 | case OFPACT_OUTPUT: | |
6568 | case OFPACT_GROUP: | |
7ae62a67 | 6569 | case OFPACT_CLONE: |
f25d0cf3 | 6570 | case OFPACT_CONTROLLER: |
c2d936a4 | 6571 | case OFPACT_ENQUEUE: |
f25d0cf3 | 6572 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 6573 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 6574 | case OFPACT_BUNDLE: |
c2d936a4 BP |
6575 | case OFPACT_SET_VLAN_VID: |
6576 | case OFPACT_SET_VLAN_PCP: | |
6577 | case OFPACT_STRIP_VLAN: | |
6578 | case OFPACT_PUSH_VLAN: | |
6579 | case OFPACT_SET_ETH_SRC: | |
6580 | case OFPACT_SET_ETH_DST: | |
6581 | case OFPACT_SET_IPV4_SRC: | |
6582 | case OFPACT_SET_IPV4_DST: | |
6583 | case OFPACT_SET_IP_DSCP: | |
6584 | case OFPACT_SET_IP_ECN: | |
6585 | case OFPACT_SET_IP_TTL: | |
6586 | case OFPACT_SET_L4_SRC_PORT: | |
6587 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 6588 | case OFPACT_REG_MOVE: |
c2d936a4 | 6589 | case OFPACT_SET_FIELD: |
bd85dac1 | 6590 | case OFPACT_STACK_PUSH: |
bd85dac1 | 6591 | case OFPACT_STACK_POP: |
f25d0cf3 | 6592 | case OFPACT_DEC_TTL: |
097d4939 | 6593 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 6594 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 6595 | case OFPACT_SET_MPLS_TTL: |
b676167a | 6596 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
6597 | case OFPACT_PUSH_MPLS: |
6598 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 6599 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
6600 | case OFPACT_SET_QUEUE: |
6601 | case OFPACT_POP_QUEUE: | |
6602 | case OFPACT_FIN_TIMEOUT: | |
6603 | case OFPACT_RESUBMIT: | |
6604 | case OFPACT_LEARN: | |
18080541 | 6605 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
6606 | case OFPACT_MULTIPATH: |
6607 | case OFPACT_NOTE: | |
6608 | case OFPACT_EXIT: | |
e672ff9b | 6609 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 6610 | case OFPACT_SAMPLE: |
d4abaff5 | 6611 | case OFPACT_DEBUG_RECIRC: |
07659514 | 6612 | case OFPACT_CT: |
9ac0aada | 6613 | case OFPACT_NAT: |
c2d936a4 BP |
6614 | default: |
6615 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
6616 | } | |
6617 | } | |
6618 | ||
6619 | enum ofperr | |
6620 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
6621 | const uint16_t inst_type) | |
6622 | { | |
6623 | switch (inst_type) { | |
6624 | ||
6625 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
6626 | case ENUM: \ | |
6627 | *instruction_type = OVSINST_##ENUM; \ | |
6628 | return 0; | |
6629 | OVS_INSTRUCTIONS | |
6630 | #undef DEFINE_INST | |
6631 | ||
6632 | default: | |
6633 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
6634 | } | |
6635 | } | |
6636 | ||
6637 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
6638 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
6639 | struct ovsinst_map { | |
6640 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
6641 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
6642 | }; | |
6643 | ||
6644 | static const struct ovsinst_map * | |
6645 | get_ovsinst_map(enum ofp_version version) | |
6646 | { | |
6647 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
6648 | static const struct ovsinst_map of11[] = { | |
6649 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
6650 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
6651 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
6652 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
6653 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
6654 | { 0, -1 }, | |
6655 | }; | |
f25d0cf3 | 6656 | |
c2d936a4 BP |
6657 | /* OpenFlow 1.3+ instructions. */ |
6658 | static const struct ovsinst_map of13[] = { | |
6659 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
6660 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
6661 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
6662 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
6663 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
6664 | { OVSINST_OFPIT13_METER, 6 }, | |
6665 | { 0, -1 }, | |
6666 | }; | |
4cceacb9 | 6667 | |
c2d936a4 BP |
6668 | return version < OFP13_VERSION ? of11 : of13; |
6669 | } | |
f25d0cf3 | 6670 | |
c2d936a4 BP |
6671 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
6672 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
6673 | * (OFP11_VERSION or later), and returns the result. */ | |
6674 | ovs_be32 | |
6675 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
6676 | { | |
6677 | uint32_t ofpit_bitmap = 0; | |
6678 | const struct ovsinst_map *x; | |
f25d0cf3 | 6679 | |
c2d936a4 BP |
6680 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
6681 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
6682 | ofpit_bitmap |= 1u << x->ofpit; | |
6683 | } | |
6684 | } | |
6685 | return htonl(ofpit_bitmap); | |
6686 | } | |
f25d0cf3 | 6687 | |
c2d936a4 BP |
6688 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
6689 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
6690 | * correspond to OVSINST_* values, and returns the result. */ | |
6691 | uint32_t | |
6692 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
6693 | { | |
6694 | uint32_t ovsinst_bitmap = 0; | |
6695 | const struct ovsinst_map *x; | |
f25d0cf3 | 6696 | |
c2d936a4 BP |
6697 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
6698 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
6699 | ovsinst_bitmap |= 1u << x->ovsinst; | |
6700 | } | |
6701 | } | |
6702 | return ovsinst_bitmap; | |
6703 | } | |
f25d0cf3 | 6704 | |
c2d936a4 BP |
6705 | static inline struct ofp11_instruction * |
6706 | instruction_next(const struct ofp11_instruction *inst) | |
6707 | { | |
6708 | return ((struct ofp11_instruction *) (void *) | |
6709 | ((uint8_t *) inst + ntohs(inst->len))); | |
6710 | } | |
f25d0cf3 | 6711 | |
c2d936a4 BP |
6712 | static inline bool |
6713 | instruction_is_valid(const struct ofp11_instruction *inst, | |
6714 | size_t n_instructions) | |
6715 | { | |
6716 | uint16_t len = ntohs(inst->len); | |
6717 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
6718 | && len >= sizeof *inst | |
6719 | && len / sizeof *inst <= n_instructions); | |
6720 | } | |
f25d0cf3 | 6721 | |
c2d936a4 BP |
6722 | /* This macro is careful to check for instructions with bad lengths. */ |
6723 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
6724 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
6725 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
6726 | ((LEFT) -= (ntohs((ITER)->len) \ | |
6727 | / sizeof(struct ofp11_instruction)), \ | |
6728 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 6729 | |
c2d936a4 BP |
6730 | static enum ofperr |
6731 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
6732 | enum ovs_instruction_type *type) | |
6733 | { | |
6734 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 6735 | |
c2d936a4 BP |
6736 | switch (inst->type) { |
6737 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
6738 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 6739 | |
c2d936a4 BP |
6740 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
6741 | case CONSTANT_HTONS(ENUM): \ | |
6742 | if (EXTENSIBLE \ | |
6743 | ? len >= sizeof(struct STRUCT) \ | |
6744 | : len == sizeof(struct STRUCT)) { \ | |
6745 | *type = OVSINST_##ENUM; \ | |
6746 | return 0; \ | |
6747 | } else { \ | |
6748 | return OFPERR_OFPBIC_BAD_LEN; \ | |
6749 | } | |
6750 | OVS_INSTRUCTIONS | |
6751 | #undef DEFINE_INST | |
29089a54 | 6752 | |
c2d936a4 BP |
6753 | default: |
6754 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
6755 | } |
6756 | } | |
f25d0cf3 | 6757 | |
c2d936a4 BP |
6758 | static enum ofperr |
6759 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
6760 | size_t n_insts, | |
6761 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 6762 | { |
c2d936a4 BP |
6763 | const struct ofp11_instruction *inst; |
6764 | size_t left; | |
f25d0cf3 | 6765 | |
c2d936a4 BP |
6766 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
6767 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
6768 | enum ovs_instruction_type type; | |
6769 | enum ofperr error; | |
f25d0cf3 | 6770 | |
c2d936a4 BP |
6771 | error = decode_openflow11_instruction(inst, &type); |
6772 | if (error) { | |
6773 | return error; | |
6774 | } | |
f25d0cf3 | 6775 | |
c2d936a4 BP |
6776 | if (out[type]) { |
6777 | return OFPERR_OFPBIC_DUP_INST; | |
6778 | } | |
6779 | out[type] = inst; | |
6780 | } | |
6781 | ||
6782 | if (left) { | |
6783 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
6784 | (n_insts - left) * sizeof *inst); | |
6785 | return OFPERR_OFPBIC_BAD_LEN; | |
6786 | } | |
6787 | return 0; | |
f25d0cf3 BP |
6788 | } |
6789 | ||
6790 | static void | |
c2d936a4 BP |
6791 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
6792 | const struct ofp_action_header **actions, | |
6793 | size_t *actions_len) | |
f25d0cf3 | 6794 | { |
c2d936a4 BP |
6795 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
6796 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
6797 | } | |
f25d0cf3 | 6798 | |
c2d936a4 BP |
6799 | enum ofperr |
6800 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
6801 | unsigned int instructions_len, | |
6802 | enum ofp_version version, | |
6803 | struct ofpbuf *ofpacts) | |
6804 | { | |
6805 | const struct ofp11_instruction *instructions; | |
6806 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
6807 | enum ofperr error; | |
f25d0cf3 | 6808 | |
9abca1e5 | 6809 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
6810 | if (version == OFP10_VERSION) { |
6811 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
6812 | version, | |
6813 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
d824b5b7 | 6814 | ofpacts, 0); |
c2d936a4 | 6815 | } |
f25d0cf3 | 6816 | |
c2d936a4 BP |
6817 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
6818 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
6819 | "multiple of %d", | |
6820 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
6821 | error = OFPERR_OFPBIC_BAD_LEN; | |
6822 | goto exit; | |
6823 | } | |
f25d0cf3 | 6824 | |
c2d936a4 BP |
6825 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
6826 | if (instructions == NULL) { | |
6827 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
6828 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6829 | instructions_len, openflow->size); |
c2d936a4 BP |
6830 | error = OFPERR_OFPBIC_BAD_LEN; |
6831 | goto exit; | |
6832 | } | |
f25d0cf3 | 6833 | |
c2d936a4 BP |
6834 | error = decode_openflow11_instructions( |
6835 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
6836 | insts); | |
6837 | if (error) { | |
6838 | goto exit; | |
6839 | } | |
f25d0cf3 | 6840 | |
c2d936a4 BP |
6841 | if (insts[OVSINST_OFPIT13_METER]) { |
6842 | const struct ofp13_instruction_meter *oim; | |
6843 | struct ofpact_meter *om; | |
f25d0cf3 | 6844 | |
c2d936a4 BP |
6845 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
6846 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 6847 | |
c2d936a4 BP |
6848 | om = ofpact_put_METER(ofpacts); |
6849 | om->meter_id = ntohl(oim->meter_id); | |
6850 | } | |
6851 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
6852 | const struct ofp_action_header *actions; | |
6853 | size_t actions_len; | |
f25d0cf3 | 6854 | |
c2d936a4 BP |
6855 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
6856 | &actions, &actions_len); | |
6857 | error = ofpacts_decode(actions, actions_len, version, ofpacts); | |
6858 | if (error) { | |
6859 | goto exit; | |
6860 | } | |
6861 | } | |
6862 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
6863 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
6864 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
6865 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
6866 | } | |
6867 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
6868 | struct ofpact_nest *on; | |
6869 | const struct ofp_action_header *actions; | |
6870 | size_t actions_len; | |
2bd318de | 6871 | size_t start = ofpacts->size; |
255a54ea BP |
6872 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
6873 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
6874 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
6875 | &actions, &actions_len); | |
6876 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
6877 | version, ofpacts); | |
6878 | if (error) { | |
6879 | goto exit; | |
6880 | } | |
6881 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 6882 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
6883 | } |
6884 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
6885 | const struct ofp11_instruction_write_metadata *oiwm; | |
6886 | struct ofpact_metadata *om; | |
ca287d20 | 6887 | |
c2d936a4 BP |
6888 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
6889 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 6890 | |
c2d936a4 BP |
6891 | om = ofpact_put_WRITE_METADATA(ofpacts); |
6892 | om->metadata = oiwm->metadata; | |
6893 | om->mask = oiwm->metadata_mask; | |
6894 | } | |
6895 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
6896 | const struct ofp11_instruction_goto_table *oigt; | |
6897 | struct ofpact_goto_table *ogt; | |
7395c052 | 6898 | |
c2d936a4 BP |
6899 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
6900 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
6901 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
6902 | ogt->table_id = oigt->table_id; | |
6903 | } | |
e3f8f887 | 6904 | |
6fd6ed71 | 6905 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 6906 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
6907 | exit: |
6908 | if (error) { | |
6909 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 6910 | } |
c2d936a4 | 6911 | return error; |
f25d0cf3 | 6912 | } |
d01c980f | 6913 | |
c2d936a4 BP |
6914 | /* Update the length of the instruction that begins at offset 'ofs' within |
6915 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
6916 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 6917 | static void |
c2d936a4 | 6918 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 6919 | { |
c2d936a4 | 6920 | struct ofp11_instruction_actions *oia; |
d01c980f | 6921 | |
c2d936a4 | 6922 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
6923 | if (openflow->size > ofs + sizeof *oia) { |
6924 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 6925 | } else { |
6fd6ed71 | 6926 | openflow->size = ofs; |
c2d936a4 | 6927 | } |
d01c980f | 6928 | } |
c2d936a4 BP |
6929 | \f |
6930 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
6931 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
6932 | * valid, otherwise an OpenFlow error code. */ | |
6933 | enum ofperr | |
6934 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 6935 | { |
c2d936a4 BP |
6936 | switch (port) { |
6937 | case OFPP_IN_PORT: | |
6938 | case OFPP_TABLE: | |
6939 | case OFPP_NORMAL: | |
6940 | case OFPP_FLOOD: | |
6941 | case OFPP_ALL: | |
6942 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
6943 | case OFPP_LOCAL: |
6944 | return 0; | |
6945 | ||
13d2c689 BP |
6946 | case OFPP_NONE: |
6947 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
6948 | ||
c2d936a4 BP |
6949 | default: |
6950 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
6951 | return 0; | |
6952 | } | |
6953 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
6954 | } |
6955 | } | |
6956 | ||
c2d936a4 BP |
6957 | /* Removes the protocols that require consistency between match and actions |
6958 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
6959 | * | |
6960 | * (An example of an inconsistency between match and actions is a flow that | |
6961 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
6962 | * label.) */ | |
d01c980f | 6963 | static void |
c2d936a4 BP |
6964 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
6965 | { | |
6966 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
6967 | } | |
6968 | ||
6969 | /* May modify flow->dl_type, flow->nw_proto and flow->vlan_tci, | |
6970 | * caller must restore them. | |
6971 | * | |
6972 | * Modifies some actions, filling in fields that could not be properly set | |
6973 | * without context. */ | |
6974 | static enum ofperr | |
6975 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, | |
6976 | struct flow *flow, ofp_port_t max_ports, | |
6977 | uint8_t table_id, uint8_t n_tables) | |
d01c980f | 6978 | { |
c2d936a4 BP |
6979 | const struct ofpact_enqueue *enqueue; |
6980 | const struct mf_field *mf; | |
6981 | ||
d01c980f BP |
6982 | switch (a->type) { |
6983 | case OFPACT_OUTPUT: | |
c2d936a4 BP |
6984 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
6985 | max_ports); | |
6986 | ||
6987 | case OFPACT_CONTROLLER: | |
6988 | return 0; | |
d01c980f BP |
6989 | |
6990 | case OFPACT_ENQUEUE: | |
c2d936a4 BP |
6991 | enqueue = ofpact_get_ENQUEUE(a); |
6992 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) | |
6993 | && enqueue->port != OFPP_IN_PORT | |
6994 | && enqueue->port != OFPP_LOCAL) { | |
6995 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
6996 | } | |
6997 | return 0; | |
6998 | ||
6999 | case OFPACT_OUTPUT_REG: | |
7000 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow); | |
7001 | ||
aaca4fe0 WT |
7002 | case OFPACT_OUTPUT_TRUNC: |
7003 | return ofpact_check_output_port(ofpact_get_OUTPUT_TRUNC(a)->port, | |
7004 | max_ports); | |
7005 | ||
c2d936a4 BP |
7006 | case OFPACT_BUNDLE: |
7007 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow); | |
d01c980f BP |
7008 | |
7009 | case OFPACT_SET_VLAN_VID: | |
c2d936a4 BP |
7010 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7011 | * OpenFlow 1.1+ if need be. */ | |
7012 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
7013 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
7014 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
7015 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
7016 | inconsistent_match(usable_protocols); | |
7017 | } | |
7018 | /* Temporary mark that we have a vlan tag. */ | |
7019 | flow->vlan_tci |= htons(VLAN_CFI); | |
7020 | return 0; | |
d01c980f BP |
7021 | |
7022 | case OFPACT_SET_VLAN_PCP: | |
c2d936a4 BP |
7023 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7024 | * OpenFlow 1.1+ if need be. */ | |
7025 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
7026 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
7027 | if (!(flow->vlan_tci & htons(VLAN_CFI)) && | |
7028 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
7029 | inconsistent_match(usable_protocols); | |
7030 | } | |
7031 | /* Temporary mark that we have a vlan tag. */ | |
7032 | flow->vlan_tci |= htons(VLAN_CFI); | |
7033 | return 0; | |
d01c980f BP |
7034 | |
7035 | case OFPACT_STRIP_VLAN: | |
c2d936a4 BP |
7036 | if (!(flow->vlan_tci & htons(VLAN_CFI))) { |
7037 | inconsistent_match(usable_protocols); | |
7038 | } | |
7039 | /* Temporary mark that we have no vlan tag. */ | |
7040 | flow->vlan_tci = htons(0); | |
7041 | return 0; | |
d01c980f | 7042 | |
3e34fbdd | 7043 | case OFPACT_PUSH_VLAN: |
c2d936a4 BP |
7044 | if (flow->vlan_tci & htons(VLAN_CFI)) { |
7045 | /* Multiple VLAN headers not supported. */ | |
7046 | return OFPERR_OFPBAC_BAD_TAG; | |
7047 | } | |
7048 | /* Temporary mark that we have a vlan tag. */ | |
7049 | flow->vlan_tci |= htons(VLAN_CFI); | |
7050 | return 0; | |
276c4e7a | 7051 | |
d01c980f | 7052 | case OFPACT_SET_ETH_SRC: |
d01c980f | 7053 | case OFPACT_SET_ETH_DST: |
c2d936a4 | 7054 | return 0; |
d01c980f BP |
7055 | |
7056 | case OFPACT_SET_IPV4_SRC: | |
d01c980f | 7057 | case OFPACT_SET_IPV4_DST: |
c2d936a4 BP |
7058 | if (flow->dl_type != htons(ETH_TYPE_IP)) { |
7059 | inconsistent_match(usable_protocols); | |
7060 | } | |
7061 | return 0; | |
d01c980f | 7062 | |
04f01c24 | 7063 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7064 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7065 | case OFPACT_SET_IP_TTL: |
7bcb1506 | 7066 | case OFPACT_DEC_TTL: |
c2d936a4 BP |
7067 | if (!is_ip_any(flow)) { |
7068 | inconsistent_match(usable_protocols); | |
7069 | } | |
7070 | return 0; | |
b02475c5 | 7071 | |
c2d936a4 | 7072 | case OFPACT_SET_L4_SRC_PORT: |
c2d936a4 | 7073 | case OFPACT_SET_L4_DST_PORT: |
b8778a0d | 7074 | if (!is_ip_any(flow) || (flow->nw_frag & FLOW_NW_FRAG_LATER) || |
c2d936a4 BP |
7075 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP |
7076 | && flow->nw_proto != IPPROTO_SCTP)) { | |
7077 | inconsistent_match(usable_protocols); | |
7078 | } | |
7079 | /* Note on which transport protocol the port numbers are set. | |
7080 | * This allows this set action to be converted to an OF1.2 set field | |
7081 | * action. */ | |
b8778a0d JR |
7082 | if (a->type == OFPACT_SET_L4_SRC_PORT) { |
7083 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7084 | } else { | |
7085 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7086 | } | |
c2d936a4 | 7087 | return 0; |
b02475c5 | 7088 | |
c2d936a4 BP |
7089 | case OFPACT_REG_MOVE: |
7090 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow); | |
8dd54666 | 7091 | |
e3f8f887 | 7092 | case OFPACT_SET_FIELD: |
c2d936a4 BP |
7093 | mf = ofpact_get_SET_FIELD(a)->field; |
7094 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
aff49b8c | 7095 | if (!mf_are_prereqs_ok(mf, flow, NULL) || |
c2d936a4 BP |
7096 | (mf->id == MFF_VLAN_VID && !(flow->vlan_tci & htons(VLAN_CFI)))) { |
7097 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisities", | |
7098 | mf->name); | |
7099 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7100 | } | |
7101 | /* Remember if we saw a vlan tag in the flow to aid translating to | |
7102 | * OpenFlow 1.1 if need be. */ | |
7103 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
7104 | (flow->vlan_tci & htons(VLAN_CFI)) == htons(VLAN_CFI); | |
7105 | if (mf->id == MFF_VLAN_TCI) { | |
7106 | /* The set field may add or remove the vlan tag, | |
7107 | * Mark the status temporarily. */ | |
128684a6 | 7108 | flow->vlan_tci = ofpact_get_SET_FIELD(a)->value->be16; |
c2d936a4 BP |
7109 | } |
7110 | return 0; | |
e3f8f887 | 7111 | |
bd85dac1 | 7112 | case OFPACT_STACK_PUSH: |
c2d936a4 BP |
7113 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow); |
7114 | ||
bd85dac1 | 7115 | case OFPACT_STACK_POP: |
c2d936a4 BP |
7116 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), flow); |
7117 | ||
7118 | case OFPACT_SET_MPLS_LABEL: | |
7119 | case OFPACT_SET_MPLS_TC: | |
7120 | case OFPACT_SET_MPLS_TTL: | |
7121 | case OFPACT_DEC_MPLS_TTL: | |
7122 | if (!eth_type_mpls(flow->dl_type)) { | |
7123 | inconsistent_match(usable_protocols); | |
7124 | } | |
7125 | return 0; | |
7126 | ||
d01c980f | 7127 | case OFPACT_SET_TUNNEL: |
c2d936a4 | 7128 | case OFPACT_SET_QUEUE: |
d01c980f | 7129 | case OFPACT_POP_QUEUE: |
d01c980f | 7130 | case OFPACT_RESUBMIT: |
c2d936a4 BP |
7131 | return 0; |
7132 | ||
7133 | case OFPACT_FIN_TIMEOUT: | |
7134 | if (flow->nw_proto != IPPROTO_TCP) { | |
7135 | inconsistent_match(usable_protocols); | |
7136 | } | |
7137 | return 0; | |
7138 | ||
d01c980f | 7139 | case OFPACT_LEARN: |
c2d936a4 BP |
7140 | return learn_check(ofpact_get_LEARN(a), flow); |
7141 | ||
18080541 BP |
7142 | case OFPACT_CONJUNCTION: |
7143 | return 0; | |
7144 | ||
d01c980f | 7145 | case OFPACT_MULTIPATH: |
c2d936a4 BP |
7146 | return multipath_check(ofpact_get_MULTIPATH(a), flow); |
7147 | ||
d01c980f BP |
7148 | case OFPACT_NOTE: |
7149 | case OFPACT_EXIT: | |
c2d936a4 | 7150 | return 0; |
d01c980f | 7151 | |
c2d936a4 BP |
7152 | case OFPACT_PUSH_MPLS: |
7153 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; | |
7154 | /* The packet is now MPLS and the MPLS payload is opaque. | |
7155 | * Thus nothing can be assumed about the network protocol. | |
7156 | * Temporarily mark that we have no nw_proto. */ | |
7157 | flow->nw_proto = 0; | |
7158 | return 0; | |
1e7db674 | 7159 | |
c2d936a4 BP |
7160 | case OFPACT_POP_MPLS: |
7161 | if (!eth_type_mpls(flow->dl_type)) { | |
7162 | inconsistent_match(usable_protocols); | |
7163 | } | |
7164 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
7165 | return 0; | |
1e7db674 | 7166 | |
c2d936a4 BP |
7167 | case OFPACT_SAMPLE: |
7168 | return 0; | |
1e7db674 | 7169 | |
7ae62a67 WT |
7170 | case OFPACT_CLONE: { |
7171 | struct ofpact_nest *on = ofpact_get_CLONE(a); | |
7172 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
7173 | flow, max_ports, table_id, n_tables, | |
7174 | usable_protocols); | |
7175 | } | |
7176 | ||
07659514 JS |
7177 | case OFPACT_CT: { |
7178 | struct ofpact_conntrack *oc = ofpact_get_CT(a); | |
7179 | ||
7180 | if (!dl_type_is_ip_any(flow->dl_type) | |
8b6d097c | 7181 | || (flow->ct_state & CS_INVALID && oc->flags & NX_CT_F_COMMIT) |
40c7b2fc JS |
7182 | || (oc->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) |
7183 | || (oc->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
ed26e3ea JR |
7184 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions |
7185 | * be silently discarded. Instead, datapath flow install fails, so | |
7186 | * it is better to flag inconsistent CT actions as hard errors. */ | |
7187 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
07659514 JS |
7188 | } |
7189 | ||
7190 | if (oc->zone_src.field) { | |
7191 | return mf_check_src(&oc->zone_src, flow); | |
7192 | } | |
8e53fe8c | 7193 | |
9f02d70c JR |
7194 | return ofpacts_check(oc->actions, ofpact_ct_get_action_len(oc), |
7195 | flow, max_ports, table_id, n_tables, | |
7196 | usable_protocols); | |
07659514 JS |
7197 | } |
7198 | ||
9ac0aada JR |
7199 | case OFPACT_NAT: { |
7200 | struct ofpact_nat *on = ofpact_get_NAT(a); | |
7201 | ||
7202 | if (!dl_type_is_ip_any(flow->dl_type) || | |
7203 | (on->range_af == AF_INET && flow->dl_type != htons(ETH_TYPE_IP)) || | |
7204 | (on->range_af == AF_INET6 | |
7205 | && flow->dl_type != htons(ETH_TYPE_IPV6))) { | |
ed26e3ea | 7206 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
9ac0aada JR |
7207 | } |
7208 | return 0; | |
7209 | } | |
7210 | ||
c2d936a4 BP |
7211 | case OFPACT_CLEAR_ACTIONS: |
7212 | return 0; | |
1e7db674 | 7213 | |
c2d936a4 BP |
7214 | case OFPACT_WRITE_ACTIONS: { |
7215 | /* Use a temporary copy of 'usable_protocols' because we can't check | |
7216 | * consistency of an action set. */ | |
7217 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
7218 | enum ofputil_protocol p = *usable_protocols; | |
7219 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
7220 | flow, max_ports, table_id, n_tables, &p); | |
7221 | } | |
1e7db674 | 7222 | |
c2d936a4 BP |
7223 | case OFPACT_WRITE_METADATA: |
7224 | return 0; | |
1e7db674 | 7225 | |
c2d936a4 BP |
7226 | case OFPACT_METER: { |
7227 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
7228 | if (mid == 0 || mid > OFPM13_MAX) { | |
7229 | return OFPERR_OFPMMFC_INVALID_METER; | |
7230 | } | |
7231 | return 0; | |
7232 | } | |
1e7db674 | 7233 | |
c2d936a4 BP |
7234 | case OFPACT_GOTO_TABLE: { |
7235 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
7236 | if ((table_id != 255 && goto_table <= table_id) | |
7237 | || (n_tables != 255 && goto_table >= n_tables)) { | |
8c87971e | 7238 | return OFPERR_OFPBIC_BAD_TABLE_ID; |
c2d936a4 BP |
7239 | } |
7240 | return 0; | |
7241 | } | |
1e7db674 | 7242 | |
c2d936a4 BP |
7243 | case OFPACT_GROUP: |
7244 | return 0; | |
1e7db674 | 7245 | |
e672ff9b JR |
7246 | case OFPACT_UNROLL_XLATE: |
7247 | /* UNROLL is an internal action that should never be seen via | |
7248 | * OpenFlow. */ | |
7249 | return OFPERR_OFPBAC_BAD_TYPE; | |
7250 | ||
d4abaff5 BP |
7251 | case OFPACT_DEBUG_RECIRC: |
7252 | return 0; | |
7253 | ||
c2d936a4 BP |
7254 | default: |
7255 | OVS_NOT_REACHED(); | |
7256 | } | |
7257 | } | |
1e7db674 | 7258 | |
c2d936a4 BP |
7259 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
7260 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
7261 | * switch with no more than 'max_ports' ports. | |
7262 | * | |
7263 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
7264 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
7265 | * example of an inconsistency between match and actions is a flow that does | |
7266 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
7267 | * | |
7268 | * May annotate ofpacts with information gathered from the 'flow'. | |
7269 | * | |
7270 | * May temporarily modify 'flow', but restores the changes before returning. */ | |
7271 | enum ofperr | |
7272 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
7273 | struct flow *flow, ofp_port_t max_ports, | |
7274 | uint8_t table_id, uint8_t n_tables, | |
7275 | enum ofputil_protocol *usable_protocols) | |
7276 | { | |
7277 | struct ofpact *a; | |
7278 | ovs_be16 dl_type = flow->dl_type; | |
7279 | ovs_be16 vlan_tci = flow->vlan_tci; | |
7280 | uint8_t nw_proto = flow->nw_proto; | |
7281 | enum ofperr error = 0; | |
1e7db674 | 7282 | |
c2d936a4 BP |
7283 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7284 | error = ofpact_check__(usable_protocols, a, flow, | |
7285 | max_ports, table_id, n_tables); | |
7286 | if (error) { | |
1e7db674 | 7287 | break; |
c2d936a4 BP |
7288 | } |
7289 | } | |
7290 | /* Restore fields that may have been modified. */ | |
7291 | flow->dl_type = dl_type; | |
7292 | flow->vlan_tci = vlan_tci; | |
7293 | flow->nw_proto = nw_proto; | |
7294 | return error; | |
7295 | } | |
1e7db674 | 7296 | |
c2d936a4 BP |
7297 | /* Like ofpacts_check(), but reports inconsistencies as |
7298 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
7299 | enum ofperr | |
7300 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
7301 | struct flow *flow, ofp_port_t max_ports, | |
7302 | uint8_t table_id, uint8_t n_tables, | |
7303 | enum ofputil_protocol usable_protocols) | |
7304 | { | |
7305 | enum ofputil_protocol p = usable_protocols; | |
7306 | enum ofperr error; | |
1e7db674 | 7307 | |
c2d936a4 BP |
7308 | error = ofpacts_check(ofpacts, ofpacts_len, flow, max_ports, |
7309 | table_id, n_tables, &p); | |
7310 | return (error ? error | |
7311 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
7312 | : 0); | |
7313 | } | |
097d4939 | 7314 | |
28f5311f JS |
7315 | /* Returns the destination field that 'ofpact' would write to, or NULL |
7316 | * if the action would not write to an mf_field. */ | |
7317 | const struct mf_field * | |
7318 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 7319 | { |
28f5311f JS |
7320 | if (ofpact->type == OFPACT_SET_FIELD) { |
7321 | const struct ofpact_set_field *orl; | |
8e53fe8c | 7322 | |
28f5311f | 7323 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 7324 | return orl->field; |
28f5311f JS |
7325 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
7326 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 7327 | |
28f5311f | 7328 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
7329 | return orm->dst.field; |
7330 | } | |
7331 | ||
7332 | return NULL; | |
7333 | } | |
7334 | ||
7335 | static enum ofperr | |
7336 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
7337 | { | |
7338 | VLOG_WARN("%s action doesn't support nested action %s", | |
7339 | ofpact_name(outer_action), ofpact_name(action)); | |
7340 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7341 | } | |
7342 | ||
7343 | static bool | |
7344 | field_requires_ct(enum mf_field_id field) | |
7345 | { | |
9daf2348 | 7346 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
7347 | } |
7348 | ||
7349 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
7350 | static enum ofperr |
7351 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
7352 | { | |
28f5311f | 7353 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
7354 | |
7355 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
7356 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
7357 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7358 | } | |
9ac0aada JR |
7359 | if (a->type == OFPACT_NAT) { |
7360 | if (outer_action != OFPACT_CT) { | |
7361 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
7362 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7363 | } | |
7364 | return 0; | |
7365 | } | |
8e53fe8c JS |
7366 | |
7367 | if (outer_action) { | |
7368 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
7369 | || outer_action == OFPACT_CT); | |
7370 | ||
7371 | if (outer_action == OFPACT_CT) { | |
7372 | if (!field) { | |
7373 | return unsupported_nesting(a->type, outer_action); | |
7374 | } else if (!field_requires_ct(field->id)) { | |
7375 | VLOG_WARN("%s action doesn't support nested modification " | |
7376 | "of %s", ofpact_name(outer_action), field->name); | |
7377 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7378 | } | |
7379 | } | |
d824b5b7 JS |
7380 | } |
7381 | ||
7382 | return 0; | |
7383 | } | |
7384 | ||
18080541 BP |
7385 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
7386 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
7387 | * vSwitch. | |
7388 | * | |
7389 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
7390 | * instructions that are allowed within 'ofpacts[]'. |
7391 | * | |
7392 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
7393 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
7394 | static enum ofperr |
7395 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 7396 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
7397 | { |
7398 | const struct ofpact *a; | |
7399 | enum ovs_instruction_type inst; | |
097d4939 | 7400 | |
c2d936a4 BP |
7401 | inst = OVSINST_OFPIT13_METER; |
7402 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
7403 | enum ovs_instruction_type next; | |
8e53fe8c | 7404 | enum ofperr error; |
1e7db674 | 7405 | |
18080541 BP |
7406 | if (a->type == OFPACT_CONJUNCTION) { |
7407 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
7408 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
7409 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
7410 | "\"note\" but not any other kind of action " | |
7411 | "(such as the \"%s\" action used here)", | |
96775a1c | 7412 | ofpact_name(a->type)); |
18080541 BP |
7413 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
7414 | } | |
7415 | } | |
7416 | return 0; | |
7417 | } | |
7418 | ||
8e53fe8c JS |
7419 | error = ofpacts_verify_nested(a, outer_action); |
7420 | if (error) { | |
7421 | return error; | |
d824b5b7 JS |
7422 | } |
7423 | ||
c2d936a4 BP |
7424 | next = ovs_instruction_type_from_ofpact_type(a->type); |
7425 | if (a > ofpacts | |
7426 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
7427 | ? next < inst | |
7428 | : next <= inst)) { | |
7429 | const char *name = ovs_instruction_name_from_type(inst); | |
7430 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 7431 | |
c2d936a4 BP |
7432 | if (next == inst) { |
7433 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
7434 | "1.1+ compatibility", name); | |
7435 | } else { | |
7436 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
7437 | "before %s, for OpenFlow 1.1+ compatibility", | |
7438 | next_name, name); | |
7439 | } | |
7440 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
7441 | } | |
7442 | if (!((1u << next) & allowed_ovsinsts)) { | |
7443 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 7444 | |
c2d936a4 BP |
7445 | VLOG_WARN("%s instruction not allowed here", name); |
7446 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 7447 | } |
c2d936a4 BP |
7448 | |
7449 | inst = next; | |
7450 | } | |
7451 | ||
7452 | return 0; | |
7453 | } | |
7454 | \f | |
7455 | /* Converting ofpacts to OpenFlow. */ | |
7456 | ||
7457 | static void | |
7458 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
7459 | struct ofpbuf *out) | |
7460 | { | |
7461 | switch (a->type) { | |
7462 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7463 | case OFPACT_##ENUM: \ | |
355ead69 GS |
7464 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
7465 | return; | |
c2d936a4 BP |
7466 | OFPACTS |
7467 | #undef OFPACT | |
7468 | default: | |
7469 | OVS_NOT_REACHED(); | |
1e7db674 | 7470 | } |
e3f8f887 JR |
7471 | } |
7472 | ||
7473 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
7474 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 7475 | * 'openflow'. */ |
a07c15bc | 7476 | size_t |
e3f8f887 JR |
7477 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
7478 | struct ofpbuf *openflow, | |
7479 | enum ofp_version ofp_version) | |
d01c980f BP |
7480 | { |
7481 | const struct ofpact *a; | |
6fd6ed71 | 7482 | size_t start_size = openflow->size; |
d01c980f BP |
7483 | |
7484 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 7485 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 7486 | } |
6fd6ed71 | 7487 | return openflow->size - start_size; |
d01c980f BP |
7488 | } |
7489 | ||
c2d936a4 BP |
7490 | static enum ovs_instruction_type |
7491 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 7492 | { |
c2d936a4 BP |
7493 | return (ovs_instruction_type_from_ofpact_type(a->type) |
7494 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 7495 | } |
8dd54666 IY |
7496 | |
7497 | void | |
e3f8f887 JR |
7498 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
7499 | size_t ofpacts_len, | |
7500 | struct ofpbuf *openflow, | |
7501 | enum ofp_version ofp_version) | |
8dd54666 | 7502 | { |
c2d936a4 | 7503 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
7504 | const struct ofpact *a; |
7505 | ||
8f2cded4 BP |
7506 | if (ofp_version == OFP10_VERSION) { |
7507 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
7508 | ofp_version); | |
7509 | return; | |
7510 | } | |
e3f8f887 | 7511 | |
c2d936a4 BP |
7512 | a = ofpacts; |
7513 | while (a < end) { | |
7514 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 7515 | size_t ofs = openflow->size; |
8dd54666 IY |
7516 | |
7517 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
7518 | do { |
7519 | encode_ofpact(a, ofp_version, openflow); | |
7520 | a = ofpact_next(a); | |
7521 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 7522 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
7523 | } else { |
7524 | encode_ofpact(a, ofp_version, openflow); | |
7525 | a = ofpact_next(a); | |
8dd54666 IY |
7526 | } |
7527 | } | |
7528 | } | |
d01c980f | 7529 | \f |
08d1e234 BP |
7530 | /* Sets of supported actions. */ |
7531 | ||
7532 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
7533 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
7534 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
7535 | * instance is specific to one OpenFlow version.) */ | |
7536 | struct ofpact_map { | |
7537 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
7538 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
7539 | }; | |
7540 | ||
7541 | static const struct ofpact_map * | |
7542 | get_ofpact_map(enum ofp_version version) | |
7543 | { | |
7544 | /* OpenFlow 1.0 actions. */ | |
7545 | static const struct ofpact_map of10[] = { | |
7546 | { OFPACT_OUTPUT, 0 }, | |
7547 | { OFPACT_SET_VLAN_VID, 1 }, | |
7548 | { OFPACT_SET_VLAN_PCP, 2 }, | |
7549 | { OFPACT_STRIP_VLAN, 3 }, | |
7550 | { OFPACT_SET_ETH_SRC, 4 }, | |
7551 | { OFPACT_SET_ETH_DST, 5 }, | |
7552 | { OFPACT_SET_IPV4_SRC, 6 }, | |
7553 | { OFPACT_SET_IPV4_DST, 7 }, | |
7554 | { OFPACT_SET_IP_DSCP, 8 }, | |
7555 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
7556 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
7557 | { OFPACT_ENQUEUE, 11 }, | |
7558 | { 0, -1 }, | |
7559 | }; | |
7560 | ||
7561 | /* OpenFlow 1.1 actions. */ | |
7562 | static const struct ofpact_map of11[] = { | |
7563 | { OFPACT_OUTPUT, 0 }, | |
7564 | { OFPACT_SET_VLAN_VID, 1 }, | |
7565 | { OFPACT_SET_VLAN_PCP, 2 }, | |
7566 | { OFPACT_SET_ETH_SRC, 3 }, | |
7567 | { OFPACT_SET_ETH_DST, 4 }, | |
7568 | { OFPACT_SET_IPV4_SRC, 5 }, | |
7569 | { OFPACT_SET_IPV4_DST, 6 }, | |
7570 | { OFPACT_SET_IP_DSCP, 7 }, | |
7571 | { OFPACT_SET_IP_ECN, 8 }, | |
7572 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
7573 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
7574 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
7575 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
7576 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
7577 | { OFPACT_SET_MPLS_TC, 14 }, | |
7578 | { OFPACT_SET_MPLS_TTL, 15 }, | |
7579 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
7580 | { OFPACT_PUSH_VLAN, 17 }, | |
7581 | { OFPACT_STRIP_VLAN, 18 }, | |
7582 | { OFPACT_PUSH_MPLS, 19 }, | |
7583 | { OFPACT_POP_MPLS, 20 }, | |
7584 | { OFPACT_SET_QUEUE, 21 }, | |
7585 | { OFPACT_GROUP, 22 }, | |
7586 | { OFPACT_SET_IP_TTL, 23 }, | |
7587 | { OFPACT_DEC_TTL, 24 }, | |
7588 | { 0, -1 }, | |
7589 | }; | |
7590 | ||
7591 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
7592 | static const struct ofpact_map of12[] = { | |
7593 | { OFPACT_OUTPUT, 0 }, | |
7594 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
7595 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
7596 | { OFPACT_SET_MPLS_TTL, 15 }, | |
7597 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
7598 | { OFPACT_PUSH_VLAN, 17 }, | |
7599 | { OFPACT_STRIP_VLAN, 18 }, | |
7600 | { OFPACT_PUSH_MPLS, 19 }, | |
7601 | { OFPACT_POP_MPLS, 20 }, | |
7602 | { OFPACT_SET_QUEUE, 21 }, | |
7603 | { OFPACT_GROUP, 22 }, | |
7604 | { OFPACT_SET_IP_TTL, 23 }, | |
7605 | { OFPACT_DEC_TTL, 24 }, | |
7606 | { OFPACT_SET_FIELD, 25 }, | |
7607 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
7608 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
7609 | { 0, -1 }, | |
7610 | }; | |
7611 | ||
7612 | switch (version) { | |
7613 | case OFP10_VERSION: | |
7614 | return of10; | |
7615 | ||
7616 | case OFP11_VERSION: | |
7617 | return of11; | |
7618 | ||
7619 | case OFP12_VERSION: | |
7620 | case OFP13_VERSION: | |
7621 | case OFP14_VERSION: | |
7622 | case OFP15_VERSION: | |
b79d45a1 | 7623 | case OFP16_VERSION: |
08d1e234 BP |
7624 | default: |
7625 | return of12; | |
7626 | } | |
7627 | } | |
7628 | ||
7629 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
7630 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
7631 | * returns the result. */ | |
7632 | ovs_be32 | |
7633 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
7634 | { | |
7635 | uint32_t openflow_bitmap = 0; | |
7636 | const struct ofpact_map *x; | |
7637 | ||
7638 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
7639 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
7640 | openflow_bitmap |= 1u << x->ofpat; | |
7641 | } | |
7642 | } | |
7643 | return htonl(openflow_bitmap); | |
7644 | } | |
7645 | ||
7646 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
7647 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
7648 | * and returns the result. */ | |
7649 | uint64_t | |
7650 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
7651 | { | |
7652 | uint64_t ofpact_bitmap = 0; | |
7653 | const struct ofpact_map *x; | |
7654 | ||
7655 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
7656 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
7657 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
7658 | } | |
7659 | } | |
7660 | return ofpact_bitmap; | |
7661 | } | |
7662 | ||
7663 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
7664 | * by 'ofpacts_bitmap'. */ | |
7665 | void | |
7666 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
7667 | { | |
7668 | if (!ofpacts_bitmap) { | |
7669 | ds_put_cstr(s, "<none>"); | |
7670 | } else { | |
7671 | while (ofpacts_bitmap) { | |
7672 | ds_put_format(s, "%s ", | |
7673 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
7674 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
7675 | } | |
7676 | ds_chomp(s, ' '); | |
7677 | } | |
7678 | } | |
7679 | \f | |
f25d0cf3 BP |
7680 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
7681 | static bool | |
4e022ec0 | 7682 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
7683 | { |
7684 | switch (ofpact->type) { | |
7685 | case OFPACT_OUTPUT: | |
7686 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
7687 | case OFPACT_ENQUEUE: | |
7688 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
7689 | case OFPACT_CONTROLLER: | |
7690 | return port == OFPP_CONTROLLER; | |
7691 | ||
7692 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 7693 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
7694 | case OFPACT_BUNDLE: |
7695 | case OFPACT_SET_VLAN_VID: | |
7696 | case OFPACT_SET_VLAN_PCP: | |
7697 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 7698 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
7699 | case OFPACT_SET_ETH_SRC: |
7700 | case OFPACT_SET_ETH_DST: | |
7701 | case OFPACT_SET_IPV4_SRC: | |
7702 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 7703 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7704 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7705 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
7706 | case OFPACT_SET_L4_SRC_PORT: |
7707 | case OFPACT_SET_L4_DST_PORT: | |
7708 | case OFPACT_REG_MOVE: | |
b2dd70be | 7709 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
7710 | case OFPACT_STACK_PUSH: |
7711 | case OFPACT_STACK_POP: | |
f25d0cf3 | 7712 | case OFPACT_DEC_TTL: |
097d4939 JR |
7713 | case OFPACT_SET_MPLS_LABEL: |
7714 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 7715 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7716 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 7717 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 7718 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
7719 | case OFPACT_SET_QUEUE: |
7720 | case OFPACT_POP_QUEUE: | |
7721 | case OFPACT_FIN_TIMEOUT: | |
7722 | case OFPACT_RESUBMIT: | |
7723 | case OFPACT_LEARN: | |
18080541 | 7724 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 7725 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
7726 | case OFPACT_NOTE: |
7727 | case OFPACT_EXIT: | |
e672ff9b | 7728 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
7729 | case OFPACT_PUSH_MPLS: |
7730 | case OFPACT_POP_MPLS: | |
29089a54 | 7731 | case OFPACT_SAMPLE: |
b19e8793 | 7732 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 7733 | case OFPACT_CLONE: |
7fdb60a7 | 7734 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 7735 | case OFPACT_GOTO_TABLE: |
638a19b0 | 7736 | case OFPACT_METER: |
7395c052 | 7737 | case OFPACT_GROUP: |
d4abaff5 | 7738 | case OFPACT_DEBUG_RECIRC: |
07659514 | 7739 | case OFPACT_CT: |
9ac0aada | 7740 | case OFPACT_NAT: |
f25d0cf3 BP |
7741 | default: |
7742 | return false; | |
7743 | } | |
7744 | } | |
7745 | ||
7746 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
7747 | * to 'port', false otherwise. */ | |
7748 | bool | |
7749 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 7750 | ofp_port_t port) |
c2d936a4 BP |
7751 | { |
7752 | const struct ofpact *a; | |
f25d0cf3 | 7753 | |
4f20179d | 7754 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
7755 | if (ofpact_outputs_to_port(a, port)) { |
7756 | return true; | |
7757 | } | |
7758 | } | |
f25d0cf3 | 7759 | |
c2d936a4 BP |
7760 | return false; |
7761 | } | |
f25d0cf3 | 7762 | |
c2d936a4 BP |
7763 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
7764 | * to 'group', false otherwise. */ | |
7765 | bool | |
7766 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
7767 | uint32_t group_id) | |
7768 | { | |
7769 | const struct ofpact *a; | |
b02475c5 | 7770 | |
4f20179d | 7771 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
7772 | if (a->type == OFPACT_GROUP |
7773 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
7774 | return true; | |
7775 | } | |
7776 | } | |
b02475c5 | 7777 | |
c2d936a4 BP |
7778 | return false; |
7779 | } | |
8dd54666 | 7780 | |
c2d936a4 BP |
7781 | bool |
7782 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
7783 | const struct ofpact *b, size_t b_len) | |
7784 | { | |
7785 | return a_len == b_len && !memcmp(a, b, a_len); | |
7786 | } | |
29089a54 | 7787 | |
c2d936a4 BP |
7788 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
7789 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
7790 | * | |
7791 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
7792 | * ofpacts_verify()). */ | |
7793 | uint32_t | |
7794 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
7795 | { | |
7796 | const struct ofpact *a; | |
7fdb60a7 | 7797 | |
c2d936a4 BP |
7798 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
7799 | enum ovs_instruction_type inst; | |
b19e8793 | 7800 | |
c2d936a4 BP |
7801 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
7802 | if (a->type == OFPACT_METER) { | |
7803 | return ofpact_get_METER(a)->meter_id; | |
7804 | } else if (inst > OVSINST_OFPIT13_METER) { | |
7805 | break; | |
4cceacb9 | 7806 | } |
c2d936a4 | 7807 | } |
638a19b0 | 7808 | |
c2d936a4 BP |
7809 | return 0; |
7810 | } | |
7811 | \f | |
7812 | /* Formatting ofpacts. */ | |
7395c052 | 7813 | |
c2d936a4 BP |
7814 | static void |
7815 | ofpact_format(const struct ofpact *a, struct ds *s) | |
7816 | { | |
7817 | switch (a->type) { | |
7818 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7819 | case OFPACT_##ENUM: \ | |
7820 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), s); \ | |
7821 | break; | |
7822 | OFPACTS | |
7823 | #undef OFPACT | |
7824 | default: | |
7825 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
7826 | } |
7827 | } | |
7828 | ||
7829 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
7830 | * 'ofpacts' to 'string'. */ | |
7831 | void | |
7832 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
7833 | struct ds *string) | |
7834 | { | |
f25d0cf3 | 7835 | if (!ofpacts_len) { |
b1c5bf1f | 7836 | ds_put_format(string, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
7837 | } else { |
7838 | const struct ofpact *a; | |
7839 | ||
7840 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
7841 | if (a != ofpacts) { | |
b1c5bf1f | 7842 | ds_put_char(string, ','); |
f25d0cf3 | 7843 | } |
8dd54666 | 7844 | |
f25d0cf3 BP |
7845 | ofpact_format(a, string); |
7846 | } | |
7847 | } | |
7848 | } | |
7849 | \f | |
7850 | /* Internal use by helpers. */ | |
7851 | ||
ce058104 | 7852 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
7853 | void * |
7854 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
7855 | { | |
7856 | struct ofpact *ofpact; | |
7857 | ||
6fd6ed71 PS |
7858 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
7859 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
7860 | ofpact_init(ofpact, type, len); |
7861 | return ofpact; | |
7862 | } | |
7863 | ||
ce058104 | 7864 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
7865 | void |
7866 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
7867 | { | |
7868 | memset(ofpact, 0, len); | |
7869 | ofpact->type = type; | |
c2d936a4 | 7870 | ofpact->raw = -1; |
f25d0cf3 BP |
7871 | ofpact->len = len; |
7872 | } | |
ce058104 BP |
7873 | |
7874 | /* Implementation of ofpact_finish_<ENUM>(). | |
7875 | * | |
7876 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
7877 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
7878 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
7879 | * the end of ofp-actions.h for more information. |
7880 | * | |
7881 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
7882 | * pointer to the return value of this function. */ | |
7883 | void * | |
34abaa3d | 7884 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 7885 | { |
5308056f JS |
7886 | ptrdiff_t len; |
7887 | ||
6fd6ed71 | 7888 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 7889 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 7890 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 7891 | ofpact->len = len; |
2bd318de | 7892 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
7893 | |
7894 | return ofpacts->header; | |
f25d0cf3 | 7895 | } |
c2d936a4 | 7896 | \f |
cab50449 | 7897 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7898 | ofpact_parse(enum ofpact_type type, char *value, struct ofpbuf *ofpacts, |
7899 | enum ofputil_protocol *usable_protocols) | |
7900 | { | |
7901 | switch (type) { | |
7902 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7903 | case OFPACT_##ENUM: \ | |
7904 | return parse_##ENUM(value, ofpacts, usable_protocols); | |
7905 | OFPACTS | |
7906 | #undef OFPACT | |
7907 | default: | |
7908 | OVS_NOT_REACHED(); | |
7909 | } | |
7910 | } | |
7911 | ||
7912 | static bool | |
7913 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
7914 | { | |
7915 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
7916 | if (!strcasecmp(name, NAME)) { \ | |
7917 | *type = OFPACT_##ENUM; \ | |
7918 | return true; \ | |
7919 | } | |
7920 | OFPACTS | |
7921 | #undef OFPACT | |
7922 | ||
7923 | return false; | |
7924 | } | |
7925 | ||
7926 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
7927 | * | |
7928 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
7929 | * error. The caller is responsible for freeing the returned string. |
7930 | * | |
7931 | * If 'outer_action' is specified, indicates that the actions being parsed | |
7932 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 7933 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
7934 | ofpacts_parse__(char *str, struct ofpbuf *ofpacts, |
7935 | enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 7936 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
7937 | { |
7938 | int prev_inst = -1; | |
7939 | enum ofperr retval; | |
7940 | char *key, *value; | |
7941 | bool drop = false; | |
7942 | char *pos; | |
7943 | ||
7944 | pos = str; | |
7945 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
7946 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
7947 | enum ofpact_type type; | |
7948 | char *error = NULL; | |
7949 | ofp_port_t port; | |
7950 | ||
7951 | if (ofpact_type_from_name(key, &type)) { | |
7952 | error = ofpact_parse(type, value, ofpacts, usable_protocols); | |
7953 | inst = ovs_instruction_type_from_ofpact_type(type); | |
7954 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
7955 | error = parse_set_vlan_vid(value, ofpacts, true); | |
7956 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { | |
7957 | error = parse_set_vlan_pcp(value, ofpacts, true); | |
7958 | } else if (!strcasecmp(key, "set_nw_ttl")) { | |
7959 | error = parse_SET_IP_TTL(value, ofpacts, usable_protocols); | |
7960 | } else if (!strcasecmp(key, "pop_vlan")) { | |
7961 | error = parse_pop_vlan(ofpacts); | |
7962 | } else if (!strcasecmp(key, "set_tunnel64")) { | |
7963 | error = parse_set_tunnel(value, ofpacts, | |
7964 | NXAST_RAW_SET_TUNNEL64); | |
7eb4b1f1 BP |
7965 | } else if (!strcasecmp(key, "load")) { |
7966 | error = parse_reg_load(value, ofpacts); | |
c2d936a4 BP |
7967 | } else if (!strcasecmp(key, "bundle_load")) { |
7968 | error = parse_bundle_load(value, ofpacts); | |
7969 | } else if (!strcasecmp(key, "drop")) { | |
7970 | drop = true; | |
7971 | } else if (!strcasecmp(key, "apply_actions")) { | |
7972 | return xstrdup("apply_actions is the default instruction"); | |
7973 | } else if (ofputil_port_from_string(key, &port)) { | |
7974 | ofpact_put_OUTPUT(ofpacts)->port = port; | |
7975 | } else { | |
7976 | return xasprintf("unknown action %s", key); | |
7977 | } | |
7978 | if (error) { | |
7979 | return error; | |
7980 | } | |
7981 | ||
7982 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
7983 | if (!allow_instructions) { | |
7984 | return xasprintf("only actions are allowed here (not " | |
7985 | "instruction %s)", | |
7986 | ovs_instruction_name_from_type(inst)); | |
7987 | } | |
7988 | if (inst == prev_inst) { | |
7989 | return xasprintf("instruction %s may be specified only once", | |
7990 | ovs_instruction_name_from_type(inst)); | |
7991 | } | |
7992 | } | |
7993 | if (prev_inst != -1 && inst < prev_inst) { | |
7994 | return xasprintf("instruction %s must be specified before %s", | |
7995 | ovs_instruction_name_from_type(inst), | |
7996 | ovs_instruction_name_from_type(prev_inst)); | |
7997 | } | |
7998 | prev_inst = inst; | |
7999 | } | |
c2d936a4 | 8000 | |
6fd6ed71 | 8001 | if (drop && ofpacts->size) { |
c2d936a4 BP |
8002 | return xstrdup("\"drop\" must not be accompanied by any other action " |
8003 | "or instruction"); | |
8004 | } | |
8005 | ||
6fd6ed71 | 8006 | retval = ofpacts_verify(ofpacts->data, ofpacts->size, |
c2d936a4 BP |
8007 | (allow_instructions |
8008 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
8009 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
8010 | outer_action); | |
c2d936a4 BP |
8011 | if (retval) { |
8012 | return xstrdup("Incorrect instruction ordering"); | |
8013 | } | |
8014 | ||
8015 | return NULL; | |
8016 | } | |
8017 | ||
cab50449 | 8018 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 | 8019 | ofpacts_parse(char *str, struct ofpbuf *ofpacts, |
d824b5b7 JS |
8020 | enum ofputil_protocol *usable_protocols, bool allow_instructions, |
8021 | enum ofpact_type outer_action) | |
c2d936a4 | 8022 | { |
6fd6ed71 | 8023 | uint32_t orig_size = ofpacts->size; |
c2d936a4 | 8024 | char *error = ofpacts_parse__(str, ofpacts, usable_protocols, |
d824b5b7 | 8025 | allow_instructions, outer_action); |
c2d936a4 | 8026 | if (error) { |
6fd6ed71 | 8027 | ofpacts->size = orig_size; |
c2d936a4 BP |
8028 | } |
8029 | return error; | |
8030 | } | |
8031 | ||
cab50449 | 8032 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
8033 | ofpacts_parse_copy(const char *s_, struct ofpbuf *ofpacts, |
8034 | enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 8035 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8036 | { |
8037 | char *error, *s; | |
8038 | ||
8039 | *usable_protocols = OFPUTIL_P_ANY; | |
8040 | ||
8041 | s = xstrdup(s_); | |
d824b5b7 JS |
8042 | error = ofpacts_parse(s, ofpacts, usable_protocols, allow_instructions, |
8043 | outer_action); | |
c2d936a4 BP |
8044 | free(s); |
8045 | ||
8046 | return error; | |
8047 | } | |
8048 | ||
8049 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
8050 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
8051 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
8052 | * |
8053 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8054 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8055 | char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
8056 | ofpacts_parse_actions(const char *s, struct ofpbuf *ofpacts, |
8057 | enum ofputil_protocol *usable_protocols) | |
8058 | { | |
d824b5b7 | 8059 | return ofpacts_parse_copy(s, ofpacts, usable_protocols, false, 0); |
c2d936a4 BP |
8060 | } |
8061 | ||
8062 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
8063 | * 'ofpacts'. | |
8064 | * | |
8065 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8066 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8067 | char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
8068 | ofpacts_parse_instructions(const char *s, struct ofpbuf *ofpacts, |
8069 | enum ofputil_protocol *usable_protocols) | |
8070 | { | |
d824b5b7 | 8071 | return ofpacts_parse_copy(s, ofpacts, usable_protocols, true, 0); |
c2d936a4 | 8072 | } |
08d1e234 BP |
8073 | |
8074 | const char * | |
8075 | ofpact_name(enum ofpact_type type) | |
8076 | { | |
8077 | switch (type) { | |
8078 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
8079 | OFPACTS | |
8080 | #undef OFPACT | |
8081 | } | |
8082 | return "<unknown>"; | |
8083 | } | |
c2d936a4 BP |
8084 | \f |
8085 | /* Low-level action decoding and encoding functions. */ | |
8086 | ||
8087 | /* Everything needed to identify a particular OpenFlow action. */ | |
8088 | struct ofpact_hdrs { | |
8089 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
8090 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
8091 | uint8_t ofp_version; /* From ofp_header. */ | |
8092 | }; | |
8093 | ||
8094 | /* Information about a particular OpenFlow action. */ | |
8095 | struct ofpact_raw_instance { | |
8096 | /* The action's identity. */ | |
8097 | struct ofpact_hdrs hdrs; | |
8098 | enum ofp_raw_action_type raw; | |
8099 | ||
8100 | /* Looking up the action. */ | |
8101 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
8102 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
8103 | ||
8104 | /* The action's encoded size. | |
8105 | * | |
8106 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
8107 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
8108 | * OFP_ACTION_ALIGN) == 65528. */ | |
8109 | unsigned short int min_length; | |
8110 | unsigned short int max_length; | |
8111 | ||
8112 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
8113 | * offset of that argument from the beginning of the action and 'arg_len' | |
8114 | * its length, both in bytes. | |
8115 | * | |
8116 | * For actions that take other forms, these are both zero. */ | |
8117 | unsigned short int arg_ofs; | |
8118 | unsigned short int arg_len; | |
8119 | ||
8120 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
8121 | const char *name; | |
8122 | ||
8123 | /* If this action is deprecated, a human-readable string with a brief | |
8124 | * explanation. */ | |
8125 | const char *deprecation; | |
8126 | }; | |
8127 | ||
8128 | /* Action header. */ | |
8129 | struct ofp_action_header { | |
8130 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
8131 | * version (see enum ofp_raw_action_type). | |
8132 | * | |
8133 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
8134 | * designates an OpenFlow vendor ID and that the remainder of the action | |
8135 | * structure has a vendor-defined meaning. | |
8136 | */ | |
8137 | #define OFPAT_VENDOR 0xffff | |
8138 | ovs_be16 type; | |
8139 | ||
8140 | /* Always a multiple of 8. */ | |
8141 | ovs_be16 len; | |
8142 | ||
8143 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
8144 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
8145 | ovs_be32 vendor; | |
8146 | }; | |
8147 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
8148 | ||
c2d936a4 BP |
8149 | static bool |
8150 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
8151 | const struct ofpact_hdrs *b) | |
8152 | { | |
8153 | return (a->vendor == b->vendor | |
8154 | && a->type == b->type | |
8155 | && a->ofp_version == b->ofp_version); | |
8156 | } | |
8157 | ||
8158 | static uint32_t | |
8159 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
8160 | { | |
8161 | return hash_2words(hdrs->vendor, (hdrs->type << 16) | hdrs->ofp_version); | |
8162 | } | |
8163 | ||
8164 | #include "ofp-actions.inc2" | |
8165 | ||
8166 | static struct hmap * | |
8167 | ofpact_decode_hmap(void) | |
8168 | { | |
8169 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8170 | static struct hmap hmap; | |
8171 | ||
8172 | if (ovsthread_once_start(&once)) { | |
8173 | struct ofpact_raw_instance *inst; | |
8174 | ||
8175 | hmap_init(&hmap); | |
8176 | for (inst = all_raw_instances; | |
8177 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8178 | inst++) { | |
8179 | hmap_insert(&hmap, &inst->decode_node, | |
8180 | ofpact_hdrs_hash(&inst->hdrs)); | |
8181 | } | |
8182 | ovsthread_once_done(&once); | |
8183 | } | |
8184 | return &hmap; | |
8185 | } | |
8186 | ||
8187 | static struct hmap * | |
8188 | ofpact_encode_hmap(void) | |
8189 | { | |
8190 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8191 | static struct hmap hmap; | |
8192 | ||
8193 | if (ovsthread_once_start(&once)) { | |
8194 | struct ofpact_raw_instance *inst; | |
8195 | ||
8196 | hmap_init(&hmap); | |
8197 | for (inst = all_raw_instances; | |
8198 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8199 | inst++) { | |
8200 | hmap_insert(&hmap, &inst->encode_node, | |
8201 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
8202 | } | |
8203 | ovsthread_once_done(&once); | |
8204 | } | |
8205 | return &hmap; | |
8206 | } | |
8207 | ||
8208 | static enum ofperr | |
8209 | ofpact_decode_raw(enum ofp_version ofp_version, | |
8210 | const struct ofp_action_header *oah, size_t length, | |
8211 | const struct ofpact_raw_instance **instp) | |
8212 | { | |
8213 | const struct ofpact_raw_instance *inst; | |
8214 | struct ofpact_hdrs hdrs; | |
8215 | ||
8216 | *instp = NULL; | |
8217 | if (length < sizeof *oah) { | |
8218 | return OFPERR_OFPBAC_BAD_LEN; | |
8219 | } | |
8220 | ||
8221 | /* Get base action type. */ | |
8222 | if (oah->type == htons(OFPAT_VENDOR)) { | |
8223 | /* Get vendor. */ | |
8224 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
8225 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
8226 | /* Get extension subtype. */ | |
8227 | const struct ext_action_header *nah; | |
c2d936a4 | 8228 | |
232c1e12 | 8229 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
8230 | if (length < sizeof *nah) { |
8231 | return OFPERR_OFPBAC_BAD_LEN; | |
8232 | } | |
8233 | hdrs.type = ntohs(nah->subtype); | |
8234 | } else { | |
8235 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
8236 | hdrs.vendor); | |
8237 | return OFPERR_OFPBAC_BAD_VENDOR; | |
8238 | } | |
8239 | } else { | |
8240 | hdrs.vendor = 0; | |
8241 | hdrs.type = ntohs(oah->type); | |
8242 | } | |
8243 | ||
8244 | hdrs.ofp_version = ofp_version; | |
8245 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
8246 | ofpact_decode_hmap()) { | |
8247 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
8248 | *instp = inst; | |
8249 | return 0; | |
8250 | } | |
8251 | } | |
8252 | ||
8253 | return (hdrs.vendor | |
8254 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
8255 | : OFPERR_OFPBAC_BAD_TYPE); | |
8256 | } | |
8257 | ||
8258 | static enum ofperr | |
8259 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
8260 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
8261 | { | |
6fd6ed71 | 8262 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
8263 | const struct ofpact_raw_instance *action; |
8264 | unsigned int length; | |
8265 | enum ofperr error; | |
8266 | ||
8267 | *raw = *arg = 0; | |
6fd6ed71 | 8268 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
8269 | if (error) { |
8270 | return error; | |
8271 | } | |
8272 | ||
8273 | if (action->deprecation) { | |
8274 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
8275 | action->name, ofputil_version_to_string(ofp_version), | |
8276 | action->deprecation); | |
8277 | } | |
8278 | ||
8279 | length = ntohs(oah->len); | |
6fd6ed71 | 8280 | if (length > buf->size) { |
b153b990 | 8281 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 8282 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
8283 | return OFPERR_OFPBAC_BAD_LEN; |
8284 | } | |
c2d936a4 BP |
8285 | if (length < action->min_length || length > action->max_length) { |
8286 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
8287 | "[%hu,%hu]", action->name, length, | |
8288 | action->min_length, action->max_length); | |
8289 | return OFPERR_OFPBAC_BAD_LEN; | |
8290 | } | |
8291 | if (length % 8) { | |
8292 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
8293 | "of 8", action->name, length); | |
8294 | return OFPERR_OFPBAC_BAD_LEN; | |
8295 | } | |
8296 | ||
8297 | *raw = action->raw; | |
8298 | *arg = 0; | |
8299 | if (action->arg_len) { | |
8300 | const uint8_t *p; | |
8301 | int i; | |
8302 | ||
8303 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
8304 | for (i = 0; i < action->arg_len; i++) { | |
8305 | *arg = (*arg << 8) | p[i]; | |
8306 | } | |
8307 | } | |
8308 | ||
8309 | ofpbuf_pull(buf, length); | |
8310 | ||
8311 | return 0; | |
8312 | } | |
8313 | ||
8314 | static const struct ofpact_raw_instance * | |
8315 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
8316 | { | |
8317 | const struct ofpact_raw_instance *inst; | |
8318 | ||
8319 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
8320 | ofpact_encode_hmap()) { | |
8321 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
8322 | return inst; | |
8323 | } | |
8324 | } | |
8325 | OVS_NOT_REACHED(); | |
8326 | } | |
8327 | ||
8328 | static void * | |
8329 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
8330 | enum ofp_raw_action_type raw, uint64_t arg) | |
8331 | { | |
8332 | const struct ofpact_raw_instance *inst; | |
8333 | struct ofp_action_header *oah; | |
8334 | const struct ofpact_hdrs *hdrs; | |
8335 | ||
8336 | inst = ofpact_raw_lookup(ofp_version, raw); | |
8337 | hdrs = &inst->hdrs; | |
8338 | ||
8339 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
8340 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
8341 | oah->len = htons(inst->min_length); | |
8342 | oah->vendor = htonl(hdrs->vendor); | |
8343 | ||
8344 | switch (hdrs->vendor) { | |
8345 | case 0: | |
8346 | break; | |
8347 | ||
232c1e12 BP |
8348 | case NX_VENDOR_ID: |
8349 | case ONF_VENDOR_ID: { | |
8350 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
8351 | nah->subtype = htons(hdrs->type); |
8352 | break; | |
8353 | } | |
8354 | ||
8355 | default: | |
8356 | OVS_NOT_REACHED(); | |
8357 | } | |
8358 | ||
8359 | if (inst->arg_len) { | |
8360 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
8361 | int i; | |
8362 | ||
8363 | for (i = 0; i < inst->arg_len; i++) { | |
8364 | *--p = arg; | |
8365 | arg >>= 8; | |
8366 | } | |
8367 | } else { | |
8368 | ovs_assert(!arg); | |
8369 | } | |
8370 | ||
8371 | return oah; | |
8372 | } | |
178742f9 BP |
8373 | |
8374 | static void | |
8375 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
8376 | { | |
8377 | struct ofp_action_header *oah; | |
8378 | ||
9ac0aada JR |
8379 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
8380 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
8381 | |
8382 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 8383 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
8384 | } |
8385 |