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f25d0cf3 | 1 | /* |
b02475c5 | 2 | * Copyright (c) 2012, 2013 Nicira, Inc. |
f25d0cf3 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #ifndef OFP_ACTIONS_H | |
18 | #define OFP_ACTIONS_H 1 | |
19 | ||
7fdb60a7 | 20 | #include <stddef.h> |
f25d0cf3 BP |
21 | #include <stdint.h> |
22 | #include "meta-flow.h" | |
23 | #include "ofp-errors.h" | |
24 | #include "ofp-util.h" | |
25 | #include "openflow/openflow.h" | |
26 | #include "openflow/nicira-ext.h" | |
27 | #include "openvswitch/types.h" | |
28 | ||
29 | /* List of OVS abstracted actions. | |
30 | * | |
31 | * This macro is used directly only internally by this header, but the list is | |
32 | * still of interest to developers. | |
33 | * | |
34 | * Each DEFINE_OFPACT invocation has the following parameters: | |
35 | * | |
36 | * 1. <ENUM>, used below in the enum definition of OFPACT_<ENUM>, and | |
37 | * elsewhere. | |
38 | * | |
39 | * 2. <STRUCT> corresponding to a structure "struct <STRUCT>", that must be | |
40 | * defined below. This structure must be an abstract definition of the | |
41 | * action. Its first member must have type "struct ofpact" and name | |
42 | * "ofpact". It may be fixed length or end with a flexible array member | |
43 | * (e.g. "int member[];"). | |
44 | * | |
45 | * 3. <MEMBER>, which has one of two possible values: | |
46 | * | |
47 | * - If "struct <STRUCT>" is fixed-length, it must be "ofpact". | |
48 | * | |
49 | * - If "struct <STRUCT>" is variable-length, it must be the name of the | |
50 | * flexible array member. | |
51 | */ | |
52 | #define OFPACTS \ | |
53 | /* Output. */ \ | |
54 | DEFINE_OFPACT(OUTPUT, ofpact_output, ofpact) \ | |
7395c052 | 55 | DEFINE_OFPACT(GROUP, ofpact_group, ofpact) \ |
f25d0cf3 BP |
56 | DEFINE_OFPACT(CONTROLLER, ofpact_controller, ofpact) \ |
57 | DEFINE_OFPACT(ENQUEUE, ofpact_enqueue, ofpact) \ | |
58 | DEFINE_OFPACT(OUTPUT_REG, ofpact_output_reg, ofpact) \ | |
59 | DEFINE_OFPACT(BUNDLE, ofpact_bundle, slaves) \ | |
60 | \ | |
61 | /* Header changes. */ \ | |
62 | DEFINE_OFPACT(SET_VLAN_VID, ofpact_vlan_vid, ofpact) \ | |
63 | DEFINE_OFPACT(SET_VLAN_PCP, ofpact_vlan_pcp, ofpact) \ | |
64 | DEFINE_OFPACT(STRIP_VLAN, ofpact_null, ofpact) \ | |
3e34fbdd | 65 | DEFINE_OFPACT(PUSH_VLAN, ofpact_null, ofpact) \ |
f25d0cf3 BP |
66 | DEFINE_OFPACT(SET_ETH_SRC, ofpact_mac, ofpact) \ |
67 | DEFINE_OFPACT(SET_ETH_DST, ofpact_mac, ofpact) \ | |
68 | DEFINE_OFPACT(SET_IPV4_SRC, ofpact_ipv4, ofpact) \ | |
69 | DEFINE_OFPACT(SET_IPV4_DST, ofpact_ipv4, ofpact) \ | |
04f01c24 | 70 | DEFINE_OFPACT(SET_IP_DSCP, ofpact_dscp, ofpact) \ |
ff14eb7a | 71 | DEFINE_OFPACT(SET_IP_ECN, ofpact_ecn, ofpact) \ |
0c20dbe4 | 72 | DEFINE_OFPACT(SET_IP_TTL, ofpact_ip_ttl, ofpact) \ |
f25d0cf3 BP |
73 | DEFINE_OFPACT(SET_L4_SRC_PORT, ofpact_l4_port, ofpact) \ |
74 | DEFINE_OFPACT(SET_L4_DST_PORT, ofpact_l4_port, ofpact) \ | |
75 | DEFINE_OFPACT(REG_MOVE, ofpact_reg_move, ofpact) \ | |
76 | DEFINE_OFPACT(REG_LOAD, ofpact_reg_load, ofpact) \ | |
bd85dac1 AZ |
77 | DEFINE_OFPACT(STACK_PUSH, ofpact_stack, ofpact) \ |
78 | DEFINE_OFPACT(STACK_POP, ofpact_stack, ofpact) \ | |
c2d967a5 | 79 | DEFINE_OFPACT(DEC_TTL, ofpact_cnt_ids, cnt_ids) \ |
0f3f3c3d | 80 | DEFINE_OFPACT(SET_MPLS_TTL, ofpact_mpls_ttl, ofpact) \ |
b676167a | 81 | DEFINE_OFPACT(DEC_MPLS_TTL, ofpact_null, ofpact) \ |
b02475c5 SH |
82 | DEFINE_OFPACT(PUSH_MPLS, ofpact_push_mpls, ofpact) \ |
83 | DEFINE_OFPACT(POP_MPLS, ofpact_pop_mpls, ofpact) \ | |
f25d0cf3 BP |
84 | \ |
85 | /* Metadata. */ \ | |
86 | DEFINE_OFPACT(SET_TUNNEL, ofpact_tunnel, ofpact) \ | |
87 | DEFINE_OFPACT(SET_QUEUE, ofpact_queue, ofpact) \ | |
88 | DEFINE_OFPACT(POP_QUEUE, ofpact_null, ofpact) \ | |
89 | DEFINE_OFPACT(FIN_TIMEOUT, ofpact_fin_timeout, ofpact) \ | |
90 | \ | |
91 | /* Flow table interaction. */ \ | |
92 | DEFINE_OFPACT(RESUBMIT, ofpact_resubmit, ofpact) \ | |
93 | DEFINE_OFPACT(LEARN, ofpact_learn, specs) \ | |
94 | \ | |
95 | /* Arithmetic. */ \ | |
96 | DEFINE_OFPACT(MULTIPATH, ofpact_multipath, ofpact) \ | |
f25d0cf3 BP |
97 | \ |
98 | /* Other. */ \ | |
99 | DEFINE_OFPACT(NOTE, ofpact_note, data) \ | |
8dd54666 | 100 | DEFINE_OFPACT(EXIT, ofpact_null, ofpact) \ |
29089a54 | 101 | DEFINE_OFPACT(SAMPLE, ofpact_sample, ofpact) \ |
8dd54666 IY |
102 | \ |
103 | /* Instructions */ \ | |
638a19b0 | 104 | DEFINE_OFPACT(METER, ofpact_meter, ofpact) \ |
b19e8793 | 105 | DEFINE_OFPACT(CLEAR_ACTIONS, ofpact_null, ofpact) \ |
7fdb60a7 | 106 | DEFINE_OFPACT(WRITE_ACTIONS, ofpact_nest, ofpact) \ |
638a19b0 | 107 | DEFINE_OFPACT(WRITE_METADATA, ofpact_metadata, ofpact) \ |
8dd54666 | 108 | DEFINE_OFPACT(GOTO_TABLE, ofpact_goto_table, ofpact) |
f25d0cf3 BP |
109 | |
110 | /* enum ofpact_type, with a member OFPACT_<ENUM> for each action. */ | |
111 | enum OVS_PACKED_ENUM ofpact_type { | |
112 | #define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) OFPACT_##ENUM, | |
113 | OFPACTS | |
114 | #undef DEFINE_OFPACT | |
115 | }; | |
116 | ||
117 | /* N_OFPACTS, the number of values of "enum ofpact_type". */ | |
118 | enum { | |
119 | N_OFPACTS = | |
120 | #define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) + 1 | |
121 | OFPACTS | |
122 | #undef DEFINE_OFPACT | |
123 | }; | |
124 | ||
125 | /* Header for an action. | |
126 | * | |
127 | * Each action is a structure "struct ofpact_*" that begins with "struct | |
128 | * ofpact", usually followed by other data that describes the action. Actions | |
2ac3c572 BP |
129 | * are padded out to a multiple of OFPACT_ALIGNTO bytes in length. |
130 | * | |
131 | * The 'compat' member is special: | |
132 | * | |
133 | * - Most "struct ofpact"s correspond to one particular kind of OpenFlow | |
134 | * action, at least in a given OpenFlow version. For example, | |
135 | * OFPACT_SET_VLAN_VID corresponds to OFPAT10_SET_VLAN_VID in OpenFlow | |
136 | * 1.0. | |
137 | * | |
138 | * For such actions, the 'compat' member is not meaningful and generally | |
139 | * should be zero. | |
140 | * | |
141 | * - A few "struct ofpact"s correspond to multiple OpenFlow actions. For | |
142 | * example, OFPACT_SET_TUNNEL can be NXAST_SET_TUNNEL or | |
143 | * NXAST_SET_TUNNEL64. In these cases, if the "struct ofpact" originated | |
144 | * from OpenFlow, then we want to make sure that, if it gets translated | |
145 | * back to OpenFlow later, it is translated back to the same action type. | |
146 | * (Otherwise, we'd violate the promise made in DESIGN, in the "Action | |
147 | * Reproduction" section.) | |
148 | * | |
149 | * For such actions, the 'compat' member should be the original action | |
150 | * type. (If the action didn't originate from OpenFlow, then setting | |
151 | * 'compat' to zero should be fine: code to translate the ofpact to | |
152 | * OpenFlow must tolerate this case.) | |
153 | */ | |
f25d0cf3 BP |
154 | struct ofpact { |
155 | enum ofpact_type type; /* OFPACT_*. */ | |
156 | enum ofputil_action_code compat; /* Original type when added, if any. */ | |
157 | uint16_t len; /* Length of the action, in bytes, including | |
158 | * struct ofpact, excluding padding. */ | |
159 | }; | |
160 | ||
161 | #ifdef __GNUC__ | |
162 | /* Make sure that OVS_PACKED_ENUM really worked. */ | |
163 | BUILD_ASSERT_DECL(sizeof(struct ofpact) == 4); | |
164 | #endif | |
165 | ||
166 | /* Alignment. */ | |
167 | #define OFPACT_ALIGNTO 8 | |
168 | #define OFPACT_ALIGN(SIZE) ROUND_UP(SIZE, OFPACT_ALIGNTO) | |
169 | ||
170 | static inline struct ofpact * | |
171 | ofpact_next(const struct ofpact *ofpact) | |
172 | { | |
173 | return (void *) ((uint8_t *) ofpact + OFPACT_ALIGN(ofpact->len)); | |
174 | } | |
175 | ||
176 | static inline struct ofpact * | |
177 | ofpact_end(const struct ofpact *ofpacts, size_t ofpacts_len) | |
178 | { | |
179 | return (void *) ((uint8_t *) ofpacts + ofpacts_len); | |
180 | } | |
181 | ||
182 | /* Assigns POS to each ofpact, in turn, in the OFPACTS_LEN bytes of ofpacts | |
183 | * starting at OFPACTS. */ | |
184 | #define OFPACT_FOR_EACH(POS, OFPACTS, OFPACTS_LEN) \ | |
185 | for ((POS) = (OFPACTS); (POS) < ofpact_end(OFPACTS, OFPACTS_LEN); \ | |
186 | (POS) = ofpact_next(POS)) | |
187 | \f | |
188 | /* Action structure for each OFPACT_*. */ | |
189 | ||
b19e8793 | 190 | /* OFPACT_STRIP_VLAN, OFPACT_POP_QUEUE, OFPACT_EXIT, OFPACT_CLEAR_ACTIONS. |
f25d0cf3 | 191 | * |
7bcb1506 | 192 | * Used for OFPAT10_STRIP_VLAN, NXAST_POP_QUEUE, NXAST_EXIT, |
8e61c110 | 193 | * OFPAT11_POP_VLAN, OFPIT11_CLEAR_ACTIONS. |
f25d0cf3 BP |
194 | * |
195 | * Action structure for actions that do not have any extra data beyond the | |
196 | * action type. */ | |
197 | struct ofpact_null { | |
198 | struct ofpact ofpact; | |
199 | }; | |
200 | ||
201 | /* OFPACT_OUTPUT. | |
202 | * | |
203 | * Used for OFPAT10_OUTPUT. */ | |
204 | struct ofpact_output { | |
205 | struct ofpact ofpact; | |
4e022ec0 | 206 | ofp_port_t port; /* Output port. */ |
f25d0cf3 BP |
207 | uint16_t max_len; /* Max send len, for port OFPP_CONTROLLER. */ |
208 | }; | |
209 | ||
210 | /* OFPACT_CONTROLLER. | |
211 | * | |
212 | * Used for NXAST_CONTROLLER. */ | |
213 | struct ofpact_controller { | |
214 | struct ofpact ofpact; | |
215 | uint16_t max_len; /* Maximum length to send to controller. */ | |
216 | uint16_t controller_id; /* Controller ID to send packet-in. */ | |
217 | enum ofp_packet_in_reason reason; /* Reason to put in packet-in. */ | |
218 | }; | |
219 | ||
220 | /* OFPACT_ENQUEUE. | |
221 | * | |
222 | * Used for OFPAT10_ENQUEUE. */ | |
223 | struct ofpact_enqueue { | |
224 | struct ofpact ofpact; | |
4e022ec0 | 225 | ofp_port_t port; |
f25d0cf3 BP |
226 | uint32_t queue; |
227 | }; | |
228 | ||
229 | /* OFPACT_OUTPUT_REG. | |
230 | * | |
231 | * Used for NXAST_OUTPUT_REG. */ | |
232 | struct ofpact_output_reg { | |
233 | struct ofpact ofpact; | |
234 | struct mf_subfield src; | |
235 | uint16_t max_len; | |
236 | }; | |
237 | ||
238 | /* OFPACT_BUNDLE. | |
239 | * | |
240 | * Used for NXAST_BUNDLE. */ | |
241 | struct ofpact_bundle { | |
242 | struct ofpact ofpact; | |
243 | ||
244 | /* Slave choice algorithm to apply to hash value. */ | |
245 | enum nx_bd_algorithm algorithm; | |
246 | ||
247 | /* What fields to hash and how. */ | |
248 | enum nx_hash_fields fields; | |
249 | uint16_t basis; /* Universal hash parameter. */ | |
250 | ||
251 | struct mf_subfield dst; | |
252 | ||
253 | /* Slaves for output. */ | |
254 | unsigned int n_slaves; | |
4e022ec0 | 255 | ofp_port_t slaves[]; |
f25d0cf3 BP |
256 | }; |
257 | ||
258 | /* OFPACT_SET_VLAN_VID. | |
259 | * | |
260 | * Used for OFPAT10_SET_VLAN_VID. */ | |
261 | struct ofpact_vlan_vid { | |
262 | struct ofpact ofpact; | |
263 | uint16_t vlan_vid; /* VLAN VID in low 12 bits, 0 in other bits. */ | |
264 | }; | |
265 | ||
266 | /* OFPACT_SET_VLAN_PCP. | |
267 | * | |
268 | * Used for OFPAT10_SET_VLAN_PCP. */ | |
269 | struct ofpact_vlan_pcp { | |
270 | struct ofpact ofpact; | |
271 | uint8_t vlan_pcp; /* VLAN PCP in low 3 bits, 0 in other bits. */ | |
272 | }; | |
273 | ||
274 | /* OFPACT_SET_ETH_SRC, OFPACT_SET_ETH_DST. | |
275 | * | |
276 | * Used for OFPAT10_SET_DL_SRC, OFPAT10_SET_DL_DST. */ | |
277 | struct ofpact_mac { | |
278 | struct ofpact ofpact; | |
279 | uint8_t mac[ETH_ADDR_LEN]; | |
280 | }; | |
281 | ||
282 | /* OFPACT_SET_IPV4_SRC, OFPACT_SET_IPV4_DST. | |
283 | * | |
284 | * Used for OFPAT10_SET_NW_SRC, OFPAT10_SET_NW_DST. */ | |
285 | struct ofpact_ipv4 { | |
286 | struct ofpact ofpact; | |
287 | ovs_be32 ipv4; | |
288 | }; | |
289 | ||
04f01c24 | 290 | /* OFPACT_SET_IP_DSCP. |
f25d0cf3 BP |
291 | * |
292 | * Used for OFPAT10_SET_NW_TOS. */ | |
293 | struct ofpact_dscp { | |
294 | struct ofpact ofpact; | |
295 | uint8_t dscp; /* DSCP in high 6 bits, rest ignored. */ | |
296 | }; | |
297 | ||
ff14eb7a JR |
298 | /* OFPACT_SET_IP_ECN. |
299 | * | |
300 | * Used for OFPAT11_SET_NW_ECN. */ | |
301 | struct ofpact_ecn { | |
302 | struct ofpact ofpact; | |
303 | uint8_t ecn; /* ECN in low 2 bits, rest ignored. */ | |
304 | }; | |
305 | ||
0c20dbe4 JR |
306 | /* OFPACT_SET_IP_TTL. |
307 | * | |
308 | * Used for OFPAT11_SET_NW_TTL. */ | |
309 | struct ofpact_ip_ttl { | |
310 | struct ofpact ofpact; | |
311 | uint8_t ttl; | |
312 | }; | |
313 | ||
f25d0cf3 BP |
314 | /* OFPACT_SET_L4_SRC_PORT, OFPACT_SET_L4_DST_PORT. |
315 | * | |
316 | * Used for OFPAT10_SET_TP_SRC, OFPAT10_SET_TP_DST. */ | |
317 | struct ofpact_l4_port { | |
318 | struct ofpact ofpact; | |
319 | uint16_t port; /* TCP or UDP port number. */ | |
320 | }; | |
321 | ||
322 | /* OFPACT_REG_MOVE. | |
323 | * | |
324 | * Used for NXAST_REG_MOVE. */ | |
325 | struct ofpact_reg_move { | |
326 | struct ofpact ofpact; | |
327 | struct mf_subfield src; | |
328 | struct mf_subfield dst; | |
329 | }; | |
330 | ||
bd85dac1 AZ |
331 | /* OFPACT_STACK_PUSH. |
332 | * | |
333 | * Used for NXAST_STACK_PUSH and NXAST_STACK_POP. */ | |
334 | struct ofpact_stack { | |
335 | struct ofpact ofpact; | |
336 | struct mf_subfield subfield; | |
337 | }; | |
338 | ||
f25d0cf3 BP |
339 | /* OFPACT_REG_LOAD. |
340 | * | |
9bab681f | 341 | * Used for NXAST_REG_LOAD, OFPAT12_SET_FIELD. */ |
f25d0cf3 BP |
342 | struct ofpact_reg_load { |
343 | struct ofpact ofpact; | |
344 | struct mf_subfield dst; | |
158edc8d | 345 | union mf_subvalue subvalue; /* Least-significant bits are used. */ |
f25d0cf3 BP |
346 | }; |
347 | ||
a7a2d006 JS |
348 | /* The position in the packet at which to insert an MPLS header. |
349 | * | |
350 | * Used NXAST_PUSH_MPLS, OFPAT11_PUSH_MPLS. */ | |
351 | enum ofpact_mpls_position { | |
352 | /* Add the MPLS LSE after the Ethernet header but before any VLAN tags. | |
353 | * OpenFlow 1.3+ requires this behavior. */ | |
354 | OFPACT_MPLS_BEFORE_VLAN, | |
355 | ||
356 | /* Add the MPLS LSE after the Ethernet header and any VLAN tags. | |
357 | * OpenFlow 1.1 and 1.2 require this behavior. */ | |
358 | OFPACT_MPLS_AFTER_VLAN | |
359 | }; | |
360 | ||
b02475c5 SH |
361 | /* OFPACT_PUSH_VLAN/MPLS/PBB |
362 | * | |
363 | * Used for NXAST_PUSH_MPLS, OFPAT11_PUSH_MPLS. */ | |
364 | struct ofpact_push_mpls { | |
365 | struct ofpact ofpact; | |
366 | ovs_be16 ethertype; | |
a7a2d006 | 367 | enum ofpact_mpls_position position; |
b02475c5 SH |
368 | }; |
369 | ||
370 | /* OFPACT_POP_MPLS | |
371 | * | |
372 | * Used for NXAST_POP_MPLS, OFPAT11_POP_MPLS.. */ | |
373 | struct ofpact_pop_mpls { | |
374 | struct ofpact ofpact; | |
375 | ovs_be16 ethertype; | |
376 | }; | |
377 | ||
f25d0cf3 BP |
378 | /* OFPACT_SET_TUNNEL. |
379 | * | |
380 | * Used for NXAST_SET_TUNNEL, NXAST_SET_TUNNEL64. */ | |
381 | struct ofpact_tunnel { | |
382 | struct ofpact ofpact; | |
383 | uint64_t tun_id; | |
384 | }; | |
385 | ||
386 | /* OFPACT_SET_QUEUE. | |
387 | * | |
388 | * Used for NXAST_SET_QUEUE. */ | |
389 | struct ofpact_queue { | |
390 | struct ofpact ofpact; | |
391 | uint32_t queue_id; | |
392 | }; | |
393 | ||
394 | /* OFPACT_FIN_TIMEOUT. | |
395 | * | |
396 | * Used for NXAST_FIN_TIMEOUT. */ | |
397 | struct ofpact_fin_timeout { | |
398 | struct ofpact ofpact; | |
399 | uint16_t fin_idle_timeout; | |
400 | uint16_t fin_hard_timeout; | |
401 | }; | |
402 | ||
4cceacb9 JS |
403 | /* OFPACT_WRITE_METADATA. |
404 | * | |
405 | * Used for NXAST_WRITE_METADATA. */ | |
406 | struct ofpact_metadata { | |
407 | struct ofpact ofpact; | |
408 | ovs_be64 metadata; | |
409 | ovs_be64 mask; | |
410 | }; | |
411 | ||
638a19b0 JR |
412 | /* OFPACT_METER. |
413 | * | |
414 | * Used for OFPIT13_METER. */ | |
415 | struct ofpact_meter { | |
416 | struct ofpact ofpact; | |
417 | uint32_t meter_id; | |
418 | }; | |
419 | ||
7fdb60a7 SH |
420 | /* OFPACT_WRITE_ACTIONS. |
421 | * | |
422 | * Used for OFPIT11_WRITE_ACTIONS. */ | |
423 | struct ofpact_nest { | |
424 | struct ofpact ofpact; | |
425 | uint8_t pad[OFPACT_ALIGN(sizeof(struct ofpact)) - sizeof(struct ofpact)]; | |
426 | struct ofpact actions[]; | |
427 | }; | |
428 | BUILD_ASSERT_DECL(offsetof(struct ofpact_nest, actions) == OFPACT_ALIGNTO); | |
429 | ||
430 | static inline size_t | |
431 | ofpact_nest_get_action_len(const struct ofpact_nest *on) | |
432 | { | |
433 | return on->ofpact.len - offsetof(struct ofpact_nest, actions); | |
434 | } | |
435 | ||
436 | void ofpacts_execute_action_set(struct ofpbuf *action_list, | |
437 | const struct ofpbuf *action_set); | |
438 | ||
f25d0cf3 BP |
439 | /* OFPACT_RESUBMIT. |
440 | * | |
441 | * Used for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE. */ | |
442 | struct ofpact_resubmit { | |
443 | struct ofpact ofpact; | |
4e022ec0 | 444 | ofp_port_t in_port; |
f25d0cf3 BP |
445 | uint8_t table_id; |
446 | }; | |
447 | ||
448 | /* Part of struct ofpact_learn, below. */ | |
449 | struct ofpact_learn_spec { | |
e956d63b | 450 | int n_bits; /* Number of bits in source and dest. */ |
f25d0cf3 | 451 | |
e956d63b BP |
452 | int src_type; /* One of NX_LEARN_SRC_*. */ |
453 | struct mf_subfield src; /* NX_LEARN_SRC_FIELD only. */ | |
454 | union mf_subvalue src_imm; /* NX_LEARN_SRC_IMMEDIATE only. */ | |
f25d0cf3 | 455 | |
e956d63b BP |
456 | int dst_type; /* One of NX_LEARN_DST_*. */ |
457 | struct mf_subfield dst; /* NX_LEARN_DST_MATCH, NX_LEARN_DST_LOAD only. */ | |
f25d0cf3 BP |
458 | }; |
459 | ||
460 | /* OFPACT_LEARN. | |
461 | * | |
462 | * Used for NXAST_LEARN. */ | |
463 | struct ofpact_learn { | |
464 | struct ofpact ofpact; | |
465 | ||
466 | uint16_t idle_timeout; /* Idle time before discarding (seconds). */ | |
467 | uint16_t hard_timeout; /* Max time before discarding (seconds). */ | |
468 | uint16_t priority; /* Priority level of flow entry. */ | |
469 | uint64_t cookie; /* Cookie for new flow. */ | |
0fb88c18 | 470 | enum ofputil_flow_mod_flags flags; |
f25d0cf3 BP |
471 | uint8_t table_id; /* Table to insert flow entry. */ |
472 | uint16_t fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
473 | uint16_t fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
474 | ||
475 | unsigned int n_specs; | |
476 | struct ofpact_learn_spec specs[]; | |
477 | }; | |
478 | ||
479 | /* OFPACT_MULTIPATH. | |
480 | * | |
481 | * Used for NXAST_MULTIPATH. */ | |
482 | struct ofpact_multipath { | |
483 | struct ofpact ofpact; | |
484 | ||
485 | /* What fields to hash and how. */ | |
486 | enum nx_hash_fields fields; | |
487 | uint16_t basis; /* Universal hash parameter. */ | |
488 | ||
489 | /* Multipath link choice algorithm to apply to hash value. */ | |
490 | enum nx_mp_algorithm algorithm; | |
491 | uint16_t max_link; /* Number of output links, minus 1. */ | |
492 | uint32_t arg; /* Algorithm-specific argument. */ | |
493 | ||
494 | /* Where to store the result. */ | |
495 | struct mf_subfield dst; | |
496 | }; | |
497 | ||
f25d0cf3 BP |
498 | /* OFPACT_NOTE. |
499 | * | |
500 | * Used for NXAST_NOTE. */ | |
501 | struct ofpact_note { | |
502 | struct ofpact ofpact; | |
503 | size_t length; | |
504 | uint8_t data[]; | |
505 | }; | |
506 | ||
29089a54 RL |
507 | /* OFPACT_SAMPLE. |
508 | * | |
509 | * Used for NXAST_SAMPLE. */ | |
510 | struct ofpact_sample { | |
511 | struct ofpact ofpact; | |
512 | uint16_t probability; // Always >0. | |
513 | uint32_t collector_set_id; | |
514 | uint32_t obs_domain_id; | |
515 | uint32_t obs_point_id; | |
516 | }; | |
517 | ||
c2d967a5 MM |
518 | /* OFPACT_DEC_TTL. |
519 | * | |
7bcb1506 | 520 | * Used for OFPAT11_DEC_NW_TTL, NXAST_DEC_TTL and NXAST_DEC_TTL_CNT_IDS. */ |
c2d967a5 MM |
521 | struct ofpact_cnt_ids { |
522 | struct ofpact ofpact; | |
523 | ||
524 | /* Controller ids. */ | |
525 | unsigned int n_controllers; | |
526 | uint16_t cnt_ids[]; | |
8dd54666 | 527 | }; |
c2d967a5 | 528 | |
0f3f3c3d SH |
529 | /* OFPACT_SET_MPLS_TTL. |
530 | * | |
531 | * Used for NXAST_SET_MPLS_TTL */ | |
532 | struct ofpact_mpls_ttl { | |
533 | struct ofpact ofpact; | |
534 | ||
535 | uint8_t ttl; | |
536 | }; | |
537 | ||
8dd54666 IY |
538 | /* OFPACT_GOTO_TABLE |
539 | * | |
540 | * Used for OFPIT11_GOTO_TABLE */ | |
541 | struct ofpact_goto_table { | |
542 | struct ofpact ofpact; | |
543 | uint8_t table_id; | |
c2d967a5 MM |
544 | }; |
545 | ||
7395c052 NZ |
546 | /* OFPACT_GROUP. |
547 | * | |
548 | * Used for OFPAT11_GROUP. */ | |
549 | struct ofpact_group { | |
550 | struct ofpact ofpact; | |
551 | uint32_t group_id; | |
552 | }; | |
553 | ||
f25d0cf3 | 554 | /* Converting OpenFlow to ofpacts. */ |
d01c980f BP |
555 | enum ofperr ofpacts_pull_openflow10(struct ofpbuf *openflow, |
556 | unsigned int actions_len, | |
557 | struct ofpbuf *ofpacts); | |
558 | enum ofperr ofpacts_pull_openflow11_actions(struct ofpbuf *openflow, | |
a7a2d006 | 559 | enum ofp_version version, |
d01c980f BP |
560 | unsigned int actions_len, |
561 | struct ofpbuf *ofpacts); | |
562 | enum ofperr ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow, | |
a7a2d006 | 563 | enum ofp_version version, |
d01c980f BP |
564 | unsigned int instructions_len, |
565 | struct ofpbuf *ofpacts); | |
f25d0cf3 | 566 | enum ofperr ofpacts_check(const struct ofpact[], size_t ofpacts_len, |
e3b56933 JR |
567 | struct flow *, ofp_port_t max_ports, |
568 | uint8_t table_id); | |
4cceacb9 | 569 | enum ofperr ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len); |
f25d0cf3 BP |
570 | |
571 | /* Converting ofpacts to OpenFlow. */ | |
d01c980f BP |
572 | void ofpacts_put_openflow10(const struct ofpact[], size_t ofpacts_len, |
573 | struct ofpbuf *openflow); | |
a07c15bc SH |
574 | size_t ofpacts_put_openflow11_actions(const struct ofpact[], size_t ofpacts_len, |
575 | struct ofpbuf *openflow); | |
d01c980f BP |
576 | void ofpacts_put_openflow11_instructions(const struct ofpact[], |
577 | size_t ofpacts_len, | |
578 | struct ofpbuf *openflow); | |
f25d0cf3 BP |
579 | |
580 | /* Working with ofpacts. */ | |
581 | bool ofpacts_output_to_port(const struct ofpact[], size_t ofpacts_len, | |
4e022ec0 | 582 | ofp_port_t port); |
7395c052 NZ |
583 | bool ofpacts_output_to_group(const struct ofpact[], size_t ofpacts_len, |
584 | uint32_t group_id); | |
f25d0cf3 BP |
585 | bool ofpacts_equal(const struct ofpact a[], size_t a_len, |
586 | const struct ofpact b[], size_t b_len); | |
d6fb622d | 587 | uint32_t ofpacts_get_meter(const struct ofpact[], size_t ofpacts_len); |
f25d0cf3 BP |
588 | |
589 | /* Formatting ofpacts. | |
590 | * | |
591 | * (For parsing ofpacts, see ofp-parse.h.) */ | |
592 | void ofpacts_format(const struct ofpact[], size_t ofpacts_len, struct ds *); | |
593 | ||
594 | /* Internal use by the helpers below. */ | |
595 | void ofpact_init(struct ofpact *, enum ofpact_type, size_t len); | |
596 | void *ofpact_put(struct ofpbuf *, enum ofpact_type, size_t len); | |
597 | ||
598 | /* For each OFPACT_<ENUM> with a corresponding struct <STRUCT>, this defines | |
599 | * the following commonly useful functions: | |
600 | * | |
601 | * struct <STRUCT> *ofpact_put_<ENUM>(struct ofpbuf *ofpacts); | |
602 | * | |
603 | * Appends a new 'ofpact', of length OFPACT_<ENUM>_RAW_SIZE, to 'ofpacts', | |
604 | * initializes it with ofpact_init_<ENUM>(), and returns it. Also sets | |
605 | * 'ofpacts->l2' to the returned action. | |
606 | * | |
607 | * After using this function to add a variable-length action, add the | |
608 | * elements of the flexible array (e.g. with ofpbuf_put()), then use | |
609 | * ofpact_update_len() to update the length embedded into the action. | |
610 | * (Keep in mind the need to refresh the structure from 'ofpacts->l2' after | |
611 | * adding data to 'ofpacts'.) | |
612 | * | |
613 | * struct <STRUCT> *ofpact_get_<ENUM>(const struct ofpact *ofpact); | |
614 | * | |
615 | * Returns 'ofpact' cast to "struct <STRUCT> *". 'ofpact->type' must be | |
616 | * OFPACT_<ENUM>. | |
617 | * | |
618 | * as well as the following more rarely useful definitions: | |
619 | * | |
620 | * void ofpact_init_<ENUM>(struct <STRUCT> *ofpact); | |
621 | * | |
622 | * Initializes the parts of 'ofpact' that identify it as having type | |
623 | * OFPACT_<ENUM> and length OFPACT_<ENUM>_RAW_SIZE and zeros the rest. | |
624 | * | |
625 | * <ENUM>_RAW_SIZE | |
626 | * | |
627 | * The size of the action structure. For a fixed-length action, this is | |
628 | * sizeof(struct <STRUCT>). For a variable-length action, this is the | |
629 | * offset to the variable-length part. | |
630 | * | |
631 | * <ENUM>_SIZE | |
632 | * | |
633 | * An integer constant, the value of OFPACT_<ENUM>_RAW_SIZE rounded up to a | |
634 | * multiple of OFPACT_ALIGNTO. | |
635 | */ | |
636 | #define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) \ | |
637 | BUILD_ASSERT_DECL(offsetof(struct STRUCT, ofpact) == 0); \ | |
638 | \ | |
639 | enum { OFPACT_##ENUM##_RAW_SIZE \ | |
640 | = (offsetof(struct STRUCT, MEMBER) \ | |
641 | ? offsetof(struct STRUCT, MEMBER) \ | |
642 | : sizeof(struct STRUCT)) }; \ | |
643 | \ | |
644 | enum { OFPACT_##ENUM##_SIZE \ | |
645 | = ROUND_UP(OFPACT_##ENUM##_RAW_SIZE, OFPACT_ALIGNTO) }; \ | |
646 | \ | |
647 | static inline struct STRUCT * \ | |
648 | ofpact_get_##ENUM(const struct ofpact *ofpact) \ | |
649 | { \ | |
cb22974d | 650 | ovs_assert(ofpact->type == OFPACT_##ENUM); \ |
db5a1019 | 651 | return ALIGNED_CAST(struct STRUCT *, ofpact); \ |
f25d0cf3 BP |
652 | } \ |
653 | \ | |
654 | static inline struct STRUCT * \ | |
655 | ofpact_put_##ENUM(struct ofpbuf *ofpacts) \ | |
656 | { \ | |
657 | return ofpact_put(ofpacts, OFPACT_##ENUM, \ | |
658 | OFPACT_##ENUM##_RAW_SIZE); \ | |
659 | } \ | |
660 | \ | |
661 | static inline void \ | |
662 | ofpact_init_##ENUM(struct STRUCT *ofpact) \ | |
663 | { \ | |
664 | ofpact_init(&ofpact->ofpact, OFPACT_##ENUM, \ | |
665 | OFPACT_##ENUM##_RAW_SIZE); \ | |
666 | } | |
667 | OFPACTS | |
668 | #undef DEFINE_OFPACT | |
669 | ||
670 | /* Functions to use after adding ofpacts to a buffer. */ | |
671 | void ofpact_update_len(struct ofpbuf *, struct ofpact *); | |
672 | void ofpact_pad(struct ofpbuf *); | |
673 | ||
99c476dc IY |
674 | /* OpenFlow 1.1 instructions. |
675 | * The order is sorted in execution order. Not in the value of OFPIT11_xxx. | |
676 | * It is enforced on parser from text string. | |
677 | */ | |
a64f0b0f | 678 | #define OVS_INSTRUCTIONS \ |
638a19b0 JR |
679 | DEFINE_INST(OFPIT13_METER, \ |
680 | ofp13_instruction_meter, false, \ | |
681 | "meter") \ | |
682 | \ | |
99c476dc IY |
683 | DEFINE_INST(OFPIT11_APPLY_ACTIONS, \ |
684 | ofp11_instruction_actions, true, \ | |
685 | "apply_actions") \ | |
a64f0b0f | 686 | \ |
99c476dc IY |
687 | DEFINE_INST(OFPIT11_CLEAR_ACTIONS, \ |
688 | ofp11_instruction, false, \ | |
689 | "clear_actions") \ | |
a64f0b0f IY |
690 | \ |
691 | DEFINE_INST(OFPIT11_WRITE_ACTIONS, \ | |
692 | ofp11_instruction_actions, true, \ | |
693 | "write_actions") \ | |
694 | \ | |
99c476dc IY |
695 | DEFINE_INST(OFPIT11_WRITE_METADATA, \ |
696 | ofp11_instruction_write_metadata, false, \ | |
697 | "write_metadata") \ | |
a64f0b0f | 698 | \ |
99c476dc IY |
699 | DEFINE_INST(OFPIT11_GOTO_TABLE, \ |
700 | ofp11_instruction_goto_table, false, \ | |
701 | "goto_table") | |
a64f0b0f IY |
702 | |
703 | enum ovs_instruction_type { | |
704 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) OVSINST_##ENUM, | |
705 | OVS_INSTRUCTIONS | |
706 | #undef DEFINE_INST | |
707 | }; | |
708 | ||
709 | enum { | |
710 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) + 1 | |
711 | N_OVS_INSTRUCTIONS = OVS_INSTRUCTIONS | |
712 | #undef DEFINE_INST | |
713 | }; | |
714 | ||
ba0bc9b0 BP |
715 | const char *ovs_instruction_name_from_type(enum ovs_instruction_type type); |
716 | int ovs_instruction_type_from_name(const char *name); | |
084c53de BP |
717 | enum ovs_instruction_type ovs_instruction_type_from_ofpact_type( |
718 | enum ofpact_type); | |
a359d5ad | 719 | |
f5c45121 SH |
720 | void ofpact_set_field_init(struct ofpact_reg_load *load, |
721 | const struct mf_field *mf, const void *src); | |
f25d0cf3 | 722 | #endif /* ofp-actions.h */ |