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f25d0cf3 | 1 | /* |
72fe7578 | 2 | * Copyright (c) 2008-2017 Nicira, Inc. |
f25d0cf3 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
b2befd5b BP |
18 | |
19 | #include <sys/types.h> | |
d787ad39 JS |
20 | #include <netinet/in.h> |
21 | ||
f25d0cf3 BP |
22 | #include "bundle.h" |
23 | #include "byte-order.h" | |
b1c5bf1f | 24 | #include "colors.h" |
f25d0cf3 | 25 | #include "compiler.h" |
d4abaff5 | 26 | #include "dummy.h" |
ee89ea7b | 27 | #include "openvswitch/hmap.h" |
f25d0cf3 | 28 | #include "learn.h" |
f25d0cf3 BP |
29 | #include "multipath.h" |
30 | #include "nx-match.h" | |
9ac0aada | 31 | #include "odp-netlink.h" |
b598f214 BW |
32 | #include "openvswitch/dynamic-string.h" |
33 | #include "openvswitch/meta-flow.h" | |
34 | #include "openvswitch/ofp-actions.h" | |
f4248336 | 35 | #include "openvswitch/ofp-util.h" |
b598f214 | 36 | #include "openvswitch/ofp-parse.h" |
66bd43fa | 37 | #include "openvswitch/ofp-prop.h" |
64c96779 | 38 | #include "openvswitch/ofpbuf.h" |
b598f214 | 39 | #include "openvswitch/vlog.h" |
c2d936a4 | 40 | #include "unaligned.h" |
cb22974d | 41 | #include "util.h" |
aafee638 | 42 | #include "vl-mff-map.h" |
f25d0cf3 BP |
43 | |
44 | VLOG_DEFINE_THIS_MODULE(ofp_actions); | |
45 | ||
46 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
f25d0cf3 | 47 | |
c2d936a4 BP |
48 | struct ofp_action_header; |
49 | ||
aad28f47 BP |
50 | /* Header for Open vSwitch and ONF vendor extension actions. |
51 | * | |
52 | * This is the entire header for a few Open vSwitch vendor extension actions, | |
53 | * the ones that either have no arguments or for which variable-length | |
54 | * arguments follow the header. | |
55 | * | |
56 | * This cannot be used as an entirely generic vendor extension action header, | |
57 | * because OpenFlow does not specify the location or size of the action | |
58 | * subtype; it just happens that ONF extensions and Nicira extensions share | |
59 | * this format. */ | |
60 | struct ext_action_header { | |
61 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
62 | ovs_be16 len; /* At least 16. */ | |
63 | ovs_be32 vendor; /* NX_VENDOR_ID or ONF_VENDOR_ID. */ | |
64 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
65 | uint8_t pad[6]; | |
66 | }; | |
67 | OFP_ASSERT(sizeof(struct ext_action_header) == 16); | |
68 | ||
c2d936a4 BP |
69 | /* Raw identifiers for OpenFlow actions. |
70 | * | |
71 | * Decoding and encoding OpenFlow actions across multiple versions is difficult | |
72 | * to do in a clean, consistent way. This enumeration lays out all of the | |
73 | * forms of actions that Open vSwitch supports. | |
74 | * | |
75 | * The comments here must follow a stylized form because the | |
76 | * "extract-ofp-actions" program parses them at build time to generate data | |
77 | * tables. | |
78 | * | |
79 | * - The first part of each comment specifies the vendor, OpenFlow versions, | |
80 | * and type for each protocol that supports the action: | |
81 | * | |
82 | * # The vendor is OF for standard OpenFlow actions, NX for Nicira | |
83 | * extension actions. (Support for other vendors can be added, but | |
84 | * it can't be done just based on a vendor ID definition alone | |
85 | * because OpenFlow doesn't define a standard way to specify a | |
86 | * subtype for vendor actions, so other vendors might do it different | |
87 | * from Nicira.) | |
88 | * | |
89 | * # The version can specify a specific OpenFlow version, a version | |
90 | * range delimited by "-", or an open-ended range with "+". | |
91 | * | |
92 | * # The type, in parentheses, is the action type number (for standard | |
93 | * OpenFlow actions) or subtype (for vendor extension actions). | |
94 | * | |
95 | * # Optionally one may add "is deprecated" followed by a | |
96 | * human-readable reason in parentheses (which will be used in log | |
97 | * messages), if a particular action should no longer be used. | |
98 | * | |
99 | * Multiple such specifications may be separated by commas. | |
100 | * | |
101 | * - The second part describes the action's wire format. It may be: | |
102 | * | |
103 | * # "struct <name>": The struct fully specifies the wire format. The | |
104 | * action is exactly the size of the struct. (Thus, the struct must | |
105 | * be an exact multiple of 8 bytes in size.) | |
106 | * | |
107 | * # "struct <name>, ...": The struct specifies the beginning of the | |
108 | * wire format. An instance of the action is either the struct's | |
109 | * exact size, or a multiple of 8 bytes longer. | |
110 | * | |
111 | * # "uint<N>_t" or "ovs_be<N>": The action consists of a (standard or | |
112 | * vendor extension) header, followed by 0 or more pad bytes to align | |
113 | * to a multiple of <N> bits, followed by an argument of the given | |
114 | * type, followed by 0 or more pad bytes to bring the total action up | |
115 | * to a multiple of 8 bytes. | |
116 | * | |
117 | * # "void": The action is just a (standard or vendor extension) | |
118 | * header. | |
119 | * | |
04f48a68 YHW |
120 | * # Optionally, one may add "VLMFF" in the end of the second part if |
121 | * the Openflow action may use a variable length meta-flow field | |
122 | * (i.e. tun_metadata). Adding "VLMFF" will pass the per-switch based | |
123 | * variable length meta-flow field mapping map (struct vl_mff_map) to | |
124 | * the corresponding action decoding function. | |
125 | * | |
c2d936a4 BP |
126 | * - Optional additional text enclosed in square brackets is commentary for |
127 | * the human reader. | |
128 | */ | |
129 | enum ofp_raw_action_type { | |
130 | /* ## ----------------- ## */ | |
131 | /* ## Standard actions. ## */ | |
132 | /* ## ----------------- ## */ | |
133 | ||
134 | /* OF1.0(0): struct ofp10_action_output. */ | |
135 | OFPAT_RAW10_OUTPUT, | |
136 | /* OF1.1+(0): struct ofp11_action_output. */ | |
137 | OFPAT_RAW11_OUTPUT, | |
138 | ||
139 | /* OF1.0(1): uint16_t. */ | |
140 | OFPAT_RAW10_SET_VLAN_VID, | |
141 | /* OF1.0(2): uint8_t. */ | |
142 | OFPAT_RAW10_SET_VLAN_PCP, | |
143 | ||
144 | /* OF1.1(1), OF1.2+(1) is deprecated (use Set-Field): uint16_t. | |
145 | * | |
146 | * [Semantics differ slightly between the 1.0 and 1.1 versions of the VLAN | |
147 | * modification actions: the 1.0 versions push a VLAN header if none is | |
148 | * present, but the 1.1 versions do not. That is the only reason that we | |
149 | * distinguish their raw action types.] */ | |
150 | OFPAT_RAW11_SET_VLAN_VID, | |
151 | /* OF1.1(2), OF1.2+(2) is deprecated (use Set-Field): uint8_t. */ | |
152 | OFPAT_RAW11_SET_VLAN_PCP, | |
153 | ||
154 | /* OF1.1+(17): ovs_be16. | |
155 | * | |
156 | * [The argument is the Ethertype, e.g. ETH_TYPE_VLAN_8021Q, not the VID or | |
157 | * TCI.] */ | |
158 | OFPAT_RAW11_PUSH_VLAN, | |
159 | ||
160 | /* OF1.0(3): void. */ | |
161 | OFPAT_RAW10_STRIP_VLAN, | |
162 | /* OF1.1+(18): void. */ | |
163 | OFPAT_RAW11_POP_VLAN, | |
164 | ||
165 | /* OF1.0(4), OF1.1(3), OF1.2+(3) is deprecated (use Set-Field): struct | |
166 | * ofp_action_dl_addr. */ | |
167 | OFPAT_RAW_SET_DL_SRC, | |
168 | ||
169 | /* OF1.0(5), OF1.1(4), OF1.2+(4) is deprecated (use Set-Field): struct | |
170 | * ofp_action_dl_addr. */ | |
171 | OFPAT_RAW_SET_DL_DST, | |
172 | ||
173 | /* OF1.0(6), OF1.1(5), OF1.2+(5) is deprecated (use Set-Field): | |
174 | * ovs_be32. */ | |
175 | OFPAT_RAW_SET_NW_SRC, | |
176 | ||
177 | /* OF1.0(7), OF1.1(6), OF1.2+(6) is deprecated (use Set-Field): | |
178 | * ovs_be32. */ | |
179 | OFPAT_RAW_SET_NW_DST, | |
180 | ||
181 | /* OF1.0(8), OF1.1(7), OF1.2+(7) is deprecated (use Set-Field): uint8_t. */ | |
182 | OFPAT_RAW_SET_NW_TOS, | |
183 | ||
184 | /* OF1.1(8), OF1.2+(8) is deprecated (use Set-Field): uint8_t. */ | |
185 | OFPAT_RAW11_SET_NW_ECN, | |
186 | ||
187 | /* OF1.0(9), OF1.1(9), OF1.2+(9) is deprecated (use Set-Field): | |
188 | * ovs_be16. */ | |
189 | OFPAT_RAW_SET_TP_SRC, | |
190 | ||
191 | /* OF1.0(10), OF1.1(10), OF1.2+(10) is deprecated (use Set-Field): | |
192 | * ovs_be16. */ | |
193 | OFPAT_RAW_SET_TP_DST, | |
194 | ||
195 | /* OF1.0(11): struct ofp10_action_enqueue. */ | |
196 | OFPAT_RAW10_ENQUEUE, | |
197 | ||
198 | /* NX1.0(30), OF1.1(13), OF1.2+(13) is deprecated (use Set-Field): | |
199 | * ovs_be32. */ | |
200 | OFPAT_RAW_SET_MPLS_LABEL, | |
201 | ||
202 | /* NX1.0(31), OF1.1(14), OF1.2+(14) is deprecated (use Set-Field): | |
203 | * uint8_t. */ | |
204 | OFPAT_RAW_SET_MPLS_TC, | |
205 | ||
206 | /* NX1.0(25), OF1.1(15), OF1.2+(15) is deprecated (use Set-Field): | |
207 | * uint8_t. */ | |
208 | OFPAT_RAW_SET_MPLS_TTL, | |
209 | ||
210 | /* NX1.0(26), OF1.1+(16): void. */ | |
211 | OFPAT_RAW_DEC_MPLS_TTL, | |
212 | ||
213 | /* NX1.0(23), OF1.1+(19): ovs_be16. | |
214 | * | |
215 | * [The argument is the Ethertype, e.g. ETH_TYPE_MPLS, not the label.] */ | |
216 | OFPAT_RAW_PUSH_MPLS, | |
217 | ||
218 | /* NX1.0(24), OF1.1+(20): ovs_be16. | |
219 | * | |
220 | * [The argument is the Ethertype, e.g. ETH_TYPE_IPV4 if at BoS or | |
221 | * ETH_TYPE_MPLS otherwise, not the label.] */ | |
222 | OFPAT_RAW_POP_MPLS, | |
223 | ||
224 | /* NX1.0(4), OF1.1+(21): uint32_t. */ | |
225 | OFPAT_RAW_SET_QUEUE, | |
226 | ||
88c8ca26 BP |
227 | /* NX1.0(40), OF1.1+(22): uint32_t. */ |
228 | OFPAT_RAW_GROUP, | |
c2d936a4 BP |
229 | |
230 | /* OF1.1+(23): uint8_t. */ | |
231 | OFPAT_RAW11_SET_NW_TTL, | |
232 | ||
233 | /* NX1.0(18), OF1.1+(24): void. */ | |
234 | OFPAT_RAW_DEC_NW_TTL, | |
235 | /* NX1.0+(21): struct nx_action_cnt_ids, ... */ | |
236 | NXAST_RAW_DEC_TTL_CNT_IDS, | |
237 | ||
04f48a68 | 238 | /* OF1.2-1.4(25): struct ofp12_action_set_field, ... VLMFF */ |
c2d936a4 | 239 | OFPAT_RAW12_SET_FIELD, |
04f48a68 | 240 | /* OF1.5+(25): struct ofp12_action_set_field, ... VLMFF */ |
7eb4b1f1 | 241 | OFPAT_RAW15_SET_FIELD, |
04f48a68 | 242 | /* NX1.0-1.4(7): struct nx_action_reg_load. VLMFF |
7eb4b1f1 BP |
243 | * |
244 | * [In OpenFlow 1.5, set_field is a superset of reg_load functionality, so | |
245 | * we drop reg_load.] */ | |
c2d936a4 | 246 | NXAST_RAW_REG_LOAD, |
04f48a68 | 247 | /* NX1.0-1.4(33): struct ext_action_header, ... VLMFF |
bad8a439 BP |
248 | * |
249 | * [In OpenFlow 1.5, set_field is a superset of reg_load2 functionality, so | |
250 | * we drop reg_load2.] */ | |
251 | NXAST_RAW_REG_LOAD2, | |
c2d936a4 | 252 | |
04f48a68 | 253 | /* OF1.5+(28): struct ofp15_action_copy_field, ... VLMFF */ |
73178f20 | 254 | OFPAT_RAW15_COPY_FIELD, |
04f48a68 | 255 | /* ONF1.3-1.4(3200): struct onf_action_copy_field, ... VLMFF */ |
914624f8 | 256 | ONFACT_RAW13_COPY_FIELD, |
04f48a68 | 257 | /* NX1.0-1.4(6): struct nx_action_reg_move, ... VLMFF */ |
73178f20 BP |
258 | NXAST_RAW_REG_MOVE, |
259 | ||
c2d936a4 BP |
260 | /* ## ------------------------- ## */ |
261 | /* ## Nicira extension actions. ## */ | |
262 | /* ## ------------------------- ## */ | |
263 | ||
264 | /* Actions similar to standard actions are listed with the standard actions. */ | |
265 | ||
266 | /* NX1.0+(1): uint16_t. */ | |
267 | NXAST_RAW_RESUBMIT, | |
268 | /* NX1.0+(14): struct nx_action_resubmit. */ | |
269 | NXAST_RAW_RESUBMIT_TABLE, | |
2cd20955 JR |
270 | /* NX1.0+(44): struct nx_action_resubmit. */ |
271 | NXAST_RAW_RESUBMIT_TABLE_CT, | |
c2d936a4 BP |
272 | |
273 | /* NX1.0+(2): uint32_t. */ | |
274 | NXAST_RAW_SET_TUNNEL, | |
275 | /* NX1.0+(9): uint64_t. */ | |
276 | NXAST_RAW_SET_TUNNEL64, | |
277 | ||
278 | /* NX1.0+(5): void. */ | |
279 | NXAST_RAW_POP_QUEUE, | |
280 | ||
c2d936a4 BP |
281 | /* NX1.0+(8): struct nx_action_note, ... */ |
282 | NXAST_RAW_NOTE, | |
283 | ||
04f48a68 | 284 | /* NX1.0+(10): struct nx_action_multipath. VLMFF */ |
c2d936a4 BP |
285 | NXAST_RAW_MULTIPATH, |
286 | ||
287 | /* NX1.0+(12): struct nx_action_bundle, ... */ | |
288 | NXAST_RAW_BUNDLE, | |
04f48a68 | 289 | /* NX1.0+(13): struct nx_action_bundle, ... VLMFF */ |
c2d936a4 BP |
290 | NXAST_RAW_BUNDLE_LOAD, |
291 | ||
04f48a68 | 292 | /* NX1.0+(15): struct nx_action_output_reg. VLMFF */ |
c2d936a4 | 293 | NXAST_RAW_OUTPUT_REG, |
04f48a68 | 294 | /* NX1.0+(32): struct nx_action_output_reg2. VLMFF */ |
bad8a439 | 295 | NXAST_RAW_OUTPUT_REG2, |
c2d936a4 | 296 | |
04f48a68 | 297 | /* NX1.0+(16): struct nx_action_learn, ... VLMFF */ |
c2d936a4 | 298 | NXAST_RAW_LEARN, |
4c71600d DDP |
299 | /* NX1.0+(45): struct nx_action_learn2, ... VLMFF */ |
300 | NXAST_RAW_LEARN2, | |
c2d936a4 BP |
301 | |
302 | /* NX1.0+(17): void. */ | |
303 | NXAST_RAW_EXIT, | |
304 | ||
305 | /* NX1.0+(19): struct nx_action_fin_timeout. */ | |
306 | NXAST_RAW_FIN_TIMEOUT, | |
307 | ||
308 | /* NX1.0+(20): struct nx_action_controller. */ | |
309 | NXAST_RAW_CONTROLLER, | |
aad28f47 | 310 | /* NX1.0+(37): struct ext_action_header, ... */ |
bdcad671 | 311 | NXAST_RAW_CONTROLLER2, |
c2d936a4 BP |
312 | |
313 | /* NX1.0+(22): struct nx_action_write_metadata. */ | |
314 | NXAST_RAW_WRITE_METADATA, | |
315 | ||
04f48a68 | 316 | /* NX1.0+(27): struct nx_action_stack. VLMFF */ |
c2d936a4 BP |
317 | NXAST_RAW_STACK_PUSH, |
318 | ||
04f48a68 | 319 | /* NX1.0+(28): struct nx_action_stack. VLMFF */ |
c2d936a4 BP |
320 | NXAST_RAW_STACK_POP, |
321 | ||
322 | /* NX1.0+(29): struct nx_action_sample. */ | |
323 | NXAST_RAW_SAMPLE, | |
f69f713b BY |
324 | /* NX1.0+(38): struct nx_action_sample2. */ |
325 | NXAST_RAW_SAMPLE2, | |
4930ea56 BP |
326 | /* NX1.0+(41): struct nx_action_sample2. */ |
327 | NXAST_RAW_SAMPLE3, | |
18080541 BP |
328 | |
329 | /* NX1.0+(34): struct nx_action_conjunction. */ | |
330 | NXAST_RAW_CONJUNCTION, | |
d4abaff5 | 331 | |
04f48a68 | 332 | /* NX1.0+(35): struct nx_action_conntrack, ... VLMFF */ |
07659514 JS |
333 | NXAST_RAW_CT, |
334 | ||
9ac0aada JR |
335 | /* NX1.0+(36): struct nx_action_nat, ... */ |
336 | NXAST_RAW_NAT, | |
337 | ||
aaca4fe0 WT |
338 | /* NX1.0+(39): struct nx_action_output_trunc. */ |
339 | NXAST_RAW_OUTPUT_TRUNC, | |
340 | ||
04f48a68 | 341 | /* NX1.0+(42): struct ext_action_header, ... VLMFF */ |
7ae62a67 WT |
342 | NXAST_RAW_CLONE, |
343 | ||
72fe7578 BP |
344 | /* NX1.0+(43): void. */ |
345 | NXAST_RAW_CT_CLEAR, | |
346 | ||
f839892a JS |
347 | /* NX1.3+(46): struct nx_action_encap, ... */ |
348 | NXAST_RAW_ENCAP, | |
349 | ||
350 | /* NX1.3+(47): struct nx_action_decap, ... */ | |
351 | NXAST_RAW_DECAP, | |
352 | ||
d4abaff5 BP |
353 | /* ## ------------------ ## */ |
354 | /* ## Debugging actions. ## */ | |
355 | /* ## ------------------ ## */ | |
356 | ||
357 | /* These are intentionally undocumented, subject to change, and ovs-vswitchd */ | |
358 | /* accepts them only if started with --enable-dummy. */ | |
359 | ||
360 | /* NX1.0+(255): void. */ | |
361 | NXAST_RAW_DEBUG_RECIRC, | |
c2d936a4 BP |
362 | }; |
363 | ||
364 | /* OpenFlow actions are always a multiple of 8 bytes in length. */ | |
365 | #define OFP_ACTION_ALIGN 8 | |
366 | ||
367 | /* Define a few functions for working with instructions. */ | |
368 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
369 | static inline const struct STRUCT * OVS_UNUSED \ | |
370 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
371 | { \ | |
372 | ovs_assert(inst->type == htons(ENUM)); \ | |
373 | return ALIGNED_CAST(struct STRUCT *, inst); \ | |
374 | } \ | |
375 | \ | |
376 | static inline void OVS_UNUSED \ | |
377 | instruction_init_##ENUM(struct STRUCT *s) \ | |
378 | { \ | |
379 | memset(s, 0, sizeof *s); \ | |
380 | s->type = htons(ENUM); \ | |
381 | s->len = htons(sizeof *s); \ | |
382 | } \ | |
383 | \ | |
384 | static inline struct STRUCT * OVS_UNUSED \ | |
385 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
386 | { \ | |
387 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
388 | instruction_init_##ENUM(s); \ | |
389 | return s; \ | |
390 | } | |
391 | OVS_INSTRUCTIONS | |
392 | #undef DEFINE_INST | |
393 | ||
394 | static void ofpacts_update_instruction_actions(struct ofpbuf *openflow, | |
395 | size_t ofs); | |
178742f9 | 396 | static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs); |
c2d936a4 BP |
397 | |
398 | static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len, | |
d824b5b7 JS |
399 | uint32_t allowed_ovsinsts, |
400 | enum ofpact_type outer_action); | |
c2d936a4 | 401 | |
128684a6 JR |
402 | static void put_set_field(struct ofpbuf *openflow, enum ofp_version, |
403 | enum mf_field_id, uint64_t value); | |
c2d936a4 | 404 | |
4b684612 BP |
405 | static void put_reg_load(struct ofpbuf *openflow, |
406 | const struct mf_subfield *, uint64_t value); | |
407 | ||
c2d936a4 BP |
408 | static enum ofperr ofpact_pull_raw(struct ofpbuf *, enum ofp_version, |
409 | enum ofp_raw_action_type *, uint64_t *arg); | |
410 | static void *ofpact_put_raw(struct ofpbuf *, enum ofp_version, | |
411 | enum ofp_raw_action_type, uint64_t arg); | |
412 | ||
cab50449 | 413 | static char *OVS_WARN_UNUSED_RESULT ofpacts_parse( |
50f96b10 BP |
414 | char *str, const struct ofputil_port_map *, |
415 | struct ofpbuf *ofpacts, enum ofputil_protocol *usable_protocols, | |
d824b5b7 | 416 | bool allow_instructions, enum ofpact_type outer_action); |
07659514 JS |
417 | static enum ofperr ofpacts_pull_openflow_actions__( |
418 | struct ofpbuf *openflow, unsigned int actions_len, | |
419 | enum ofp_version version, uint32_t allowed_ovsinsts, | |
04f48a68 | 420 | struct ofpbuf *ofpacts, enum ofpact_type outer_action, |
5c7c16d8 | 421 | const struct vl_mff_map *vl_mff_map, uint64_t *ofpacts_tlv_bitmap); |
8e53fe8c | 422 | static char * OVS_WARN_UNUSED_RESULT ofpacts_parse_copy( |
50f96b10 | 423 | const char *s_, const struct ofputil_port_map *, struct ofpbuf *ofpacts, |
8e53fe8c JS |
424 | enum ofputil_protocol *usable_protocols, |
425 | bool allow_instructions, enum ofpact_type outer_action); | |
d824b5b7 | 426 | |
4f20179d BP |
427 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
428 | * nested ofpacts it returns the first one. */ | |
429 | struct ofpact * | |
430 | ofpact_next_flattened(const struct ofpact *ofpact) | |
431 | { | |
432 | switch (ofpact->type) { | |
433 | case OFPACT_OUTPUT: | |
434 | case OFPACT_GROUP: | |
435 | case OFPACT_CONTROLLER: | |
436 | case OFPACT_ENQUEUE: | |
437 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 438 | case OFPACT_OUTPUT_TRUNC: |
4f20179d BP |
439 | case OFPACT_BUNDLE: |
440 | case OFPACT_SET_FIELD: | |
441 | case OFPACT_SET_VLAN_VID: | |
442 | case OFPACT_SET_VLAN_PCP: | |
443 | case OFPACT_STRIP_VLAN: | |
444 | case OFPACT_PUSH_VLAN: | |
445 | case OFPACT_SET_ETH_SRC: | |
446 | case OFPACT_SET_ETH_DST: | |
447 | case OFPACT_SET_IPV4_SRC: | |
448 | case OFPACT_SET_IPV4_DST: | |
449 | case OFPACT_SET_IP_DSCP: | |
450 | case OFPACT_SET_IP_ECN: | |
451 | case OFPACT_SET_IP_TTL: | |
452 | case OFPACT_SET_L4_SRC_PORT: | |
453 | case OFPACT_SET_L4_DST_PORT: | |
454 | case OFPACT_REG_MOVE: | |
455 | case OFPACT_STACK_PUSH: | |
456 | case OFPACT_STACK_POP: | |
457 | case OFPACT_DEC_TTL: | |
458 | case OFPACT_SET_MPLS_LABEL: | |
459 | case OFPACT_SET_MPLS_TC: | |
460 | case OFPACT_SET_MPLS_TTL: | |
461 | case OFPACT_DEC_MPLS_TTL: | |
462 | case OFPACT_PUSH_MPLS: | |
463 | case OFPACT_POP_MPLS: | |
464 | case OFPACT_SET_TUNNEL: | |
465 | case OFPACT_SET_QUEUE: | |
466 | case OFPACT_POP_QUEUE: | |
467 | case OFPACT_FIN_TIMEOUT: | |
468 | case OFPACT_RESUBMIT: | |
469 | case OFPACT_LEARN: | |
470 | case OFPACT_CONJUNCTION: | |
471 | case OFPACT_MULTIPATH: | |
472 | case OFPACT_NOTE: | |
473 | case OFPACT_EXIT: | |
474 | case OFPACT_SAMPLE: | |
475 | case OFPACT_UNROLL_XLATE: | |
72fe7578 | 476 | case OFPACT_CT_CLEAR: |
4f20179d BP |
477 | case OFPACT_DEBUG_RECIRC: |
478 | case OFPACT_METER: | |
479 | case OFPACT_CLEAR_ACTIONS: | |
480 | case OFPACT_WRITE_METADATA: | |
481 | case OFPACT_GOTO_TABLE: | |
482 | case OFPACT_NAT: | |
f839892a JS |
483 | case OFPACT_ENCAP: |
484 | case OFPACT_DECAP: | |
4f20179d BP |
485 | return ofpact_next(ofpact); |
486 | ||
7ae62a67 WT |
487 | case OFPACT_CLONE: |
488 | return ofpact_get_CLONE(ofpact)->actions; | |
489 | ||
4f20179d BP |
490 | case OFPACT_CT: |
491 | return ofpact_get_CT(ofpact)->actions; | |
492 | ||
493 | case OFPACT_WRITE_ACTIONS: | |
494 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
495 | } | |
496 | ||
497 | OVS_NOT_REACHED(); | |
498 | } | |
499 | ||
d824b5b7 JS |
500 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
501 | * ofpacts_parse() oblivious of actions nesting. | |
502 | * | |
503 | * Push the actions back on after nested parsing, e.g.: | |
504 | * | |
505 | * size_t ofs = ofpacts_pull(ofpacts); | |
506 | * ...nested parsing... | |
507 | * ofpbuf_push_uninit(ofpacts, ofs); | |
508 | */ | |
509 | static size_t | |
510 | ofpacts_pull(struct ofpbuf *ofpacts) | |
511 | { | |
512 | size_t ofs; | |
513 | ||
d824b5b7 JS |
514 | ofs = ofpacts->size; |
515 | ofpbuf_pull(ofpacts, ofs); | |
516 | ||
517 | return ofs; | |
518 | } | |
c2d936a4 BP |
519 | |
520 | #include "ofp-actions.inc1" | |
521 | \f | |
522 | /* Output actions. */ | |
523 | ||
524 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
525 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
526 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
527 | * packet should be sent. */ | |
528 | struct ofp10_action_output { | |
529 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
530 | ovs_be16 len; /* Length is 8. */ | |
531 | ovs_be16 port; /* Output port. */ | |
532 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 533 | }; |
c2d936a4 BP |
534 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
535 | ||
536 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
537 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
538 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
539 | * packet should be sent.*/ | |
540 | struct ofp11_action_output { | |
541 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
542 | ovs_be16 len; /* Length is 16. */ | |
543 | ovs_be32 port; /* Output port. */ | |
544 | ovs_be16 max_len; /* Max length to send to controller. */ | |
545 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
546 | }; | |
547 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 548 | |
f25d0cf3 | 549 | static enum ofperr |
c2d936a4 | 550 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 551 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 552 | struct ofpbuf *out) |
f25d0cf3 BP |
553 | { |
554 | struct ofpact_output *output; | |
555 | ||
556 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 557 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
558 | output->max_len = ntohs(oao->max_len); |
559 | ||
57ad4e9e | 560 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
561 | } |
562 | ||
563 | static enum ofperr | |
c2d936a4 | 564 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
565 | enum ofp_version ofp_version OVS_UNUSED, |
566 | struct ofpbuf *out) | |
f25d0cf3 | 567 | { |
c2d936a4 BP |
568 | struct ofpact_output *output; |
569 | enum ofperr error; | |
f25d0cf3 | 570 | |
c2d936a4 BP |
571 | output = ofpact_put_OUTPUT(out); |
572 | output->max_len = ntohs(oao->max_len); | |
573 | ||
574 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
575 | if (error) { | |
576 | return error; | |
f25d0cf3 | 577 | } |
c2d936a4 BP |
578 | |
579 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
580 | } |
581 | ||
582 | static void | |
c2d936a4 BP |
583 | encode_OUTPUT(const struct ofpact_output *output, |
584 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 585 | { |
c2d936a4 BP |
586 | if (ofp_version == OFP10_VERSION) { |
587 | struct ofp10_action_output *oao; | |
f25d0cf3 | 588 | |
c2d936a4 BP |
589 | oao = put_OFPAT10_OUTPUT(out); |
590 | oao->port = htons(ofp_to_u16(output->port)); | |
591 | oao->max_len = htons(output->max_len); | |
592 | } else { | |
593 | struct ofp11_action_output *oao; | |
594 | ||
595 | oao = put_OFPAT11_OUTPUT(out); | |
596 | oao->port = ofputil_port_to_ofp11(output->port); | |
597 | oao->max_len = htons(output->max_len); | |
598 | } | |
f25d0cf3 BP |
599 | } |
600 | ||
aaca4fe0 WT |
601 | static char * OVS_WARN_UNUSED_RESULT |
602 | parse_truncate_subfield(struct ofpact_output_trunc *output_trunc, | |
50f96b10 BP |
603 | const char *arg_, |
604 | const struct ofputil_port_map *port_map) | |
aaca4fe0 WT |
605 | { |
606 | char *key, *value; | |
607 | char *arg = CONST_CAST(char *, arg_); | |
608 | ||
609 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
610 | if (!strcmp(key, "port")) { | |
50f96b10 BP |
611 | if (!ofputil_port_from_string(value, port_map, |
612 | &output_trunc->port)) { | |
aaca4fe0 WT |
613 | return xasprintf("output to unknown truncate port: %s", |
614 | value); | |
615 | } | |
616 | if (ofp_to_u16(output_trunc->port) > ofp_to_u16(OFPP_MAX)) { | |
617 | if (output_trunc->port != OFPP_LOCAL && | |
618 | output_trunc->port != OFPP_IN_PORT) | |
619 | return xasprintf("output to unsupported truncate port: %s", | |
620 | value); | |
621 | } | |
622 | } else if (!strcmp(key, "max_len")) { | |
623 | char *err; | |
624 | ||
625 | err = str_to_u32(value, &output_trunc->max_len); | |
626 | if (err) { | |
627 | return err; | |
628 | } | |
629 | } else { | |
630 | return xasprintf("invalid key '%s' in output_trunc argument", | |
631 | key); | |
632 | } | |
633 | } | |
634 | return NULL; | |
635 | } | |
636 | ||
cab50449 | 637 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
638 | parse_OUTPUT(const char *arg, |
639 | const struct ofputil_port_map *port_map, | |
640 | struct ofpbuf *ofpacts, | |
c2d936a4 | 641 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
f25d0cf3 | 642 | { |
21b2fa61 | 643 | if (strstr(arg, "port") && strstr(arg, "max_len")) { |
aaca4fe0 WT |
644 | struct ofpact_output_trunc *output_trunc; |
645 | ||
646 | output_trunc = ofpact_put_OUTPUT_TRUNC(ofpacts); | |
50f96b10 | 647 | return parse_truncate_subfield(output_trunc, arg, port_map); |
7df14f8b | 648 | } |
c2d936a4 | 649 | |
7df14f8b BP |
650 | ofp_port_t port; |
651 | if (ofputil_port_from_string(arg, port_map, &port)) { | |
652 | struct ofpact_output *output = ofpact_put_OUTPUT(ofpacts); | |
653 | output->port = port; | |
654 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
c2d936a4 | 655 | return NULL; |
f25d0cf3 | 656 | } |
7df14f8b BP |
657 | |
658 | struct mf_subfield src; | |
659 | char *error = mf_parse_subfield(&src, arg); | |
660 | if (!error) { | |
661 | struct ofpact_output_reg *output_reg; | |
662 | ||
663 | output_reg = ofpact_put_OUTPUT_REG(ofpacts); | |
664 | output_reg->max_len = UINT16_MAX; | |
665 | output_reg->src = src; | |
666 | return NULL; | |
667 | } | |
668 | free(error); | |
669 | ||
670 | return xasprintf("%s: output to unknown port", arg); | |
c2d936a4 | 671 | } |
f25d0cf3 | 672 | |
c2d936a4 | 673 | static void |
50f96b10 BP |
674 | format_OUTPUT(const struct ofpact_output *a, |
675 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 BP |
676 | { |
677 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
50f96b10 BP |
678 | ds_put_format(s, "%soutput:%s", colors.special, colors.end); |
679 | } | |
680 | ofputil_format_port(a->port, port_map, s); | |
681 | if (a->port == OFPP_CONTROLLER) { | |
682 | ds_put_format(s, ":%"PRIu16, a->max_len); | |
c2d936a4 | 683 | } |
f25d0cf3 | 684 | } |
c2d936a4 BP |
685 | \f |
686 | /* Group actions. */ | |
f25d0cf3 BP |
687 | |
688 | static enum ofperr | |
88c8ca26 | 689 | decode_OFPAT_RAW_GROUP(uint32_t group_id, |
f3cd3ac7 JS |
690 | enum ofp_version ofp_version OVS_UNUSED, |
691 | struct ofpbuf *out) | |
f25d0cf3 | 692 | { |
c2d936a4 BP |
693 | ofpact_put_GROUP(out)->group_id = group_id; |
694 | return 0; | |
695 | } | |
f25d0cf3 | 696 | |
c2d936a4 BP |
697 | static void |
698 | encode_GROUP(const struct ofpact_group *group, | |
699 | enum ofp_version ofp_version, struct ofpbuf *out) | |
700 | { | |
88c8ca26 | 701 | put_OFPAT_GROUP(out, ofp_version, group->group_id); |
c2d936a4 | 702 | } |
f25d0cf3 | 703 | |
cab50449 | 704 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
705 | parse_GROUP(char *arg, |
706 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
707 | struct ofpbuf *ofpacts, | |
708 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 BP |
709 | { |
710 | return str_to_u32(arg, &ofpact_put_GROUP(ofpacts)->group_id); | |
f25d0cf3 BP |
711 | } |
712 | ||
713 | static void | |
50f96b10 BP |
714 | format_GROUP(const struct ofpact_group *a, |
715 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
716 | struct ds *s) | |
f25d0cf3 | 717 | { |
b1c5bf1f QM |
718 | ds_put_format(s, "%sgroup:%s%"PRIu32, |
719 | colors.special, colors.end, a->group_id); | |
f25d0cf3 | 720 | } |
c2d936a4 BP |
721 | \f |
722 | /* Action structure for NXAST_CONTROLLER. | |
723 | * | |
724 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
725 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
726 | * specifying: | |
727 | * | |
728 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
729 | * | |
730 | * - 'controller_id': The ID of the controller connection to which the | |
731 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
732 | * sent only to controllers that have the specified controller connection | |
733 | * ID. See "struct nx_controller_id" for more information. */ | |
734 | struct nx_action_controller { | |
735 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
736 | ovs_be16 len; /* Length is 16. */ | |
737 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
738 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
739 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
740 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
741 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
742 | uint8_t zero; /* Must be zero. */ | |
743 | }; | |
744 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 745 | |
77ab5fd2 BP |
746 | /* Properties for NXAST_CONTROLLER2. |
747 | * | |
748 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
749 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
750 | enum nx_action_controller2_prop_type { |
751 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
752 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
753 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
754 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 755 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
bdcad671 BP |
756 | }; |
757 | ||
aad28f47 BP |
758 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
759 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 760 | |
c2d936a4 BP |
761 | static enum ofperr |
762 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 763 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 764 | struct ofpbuf *out) |
f25d0cf3 BP |
765 | { |
766 | struct ofpact_controller *oc; | |
767 | ||
768 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 769 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
770 | oc->max_len = ntohs(nac->max_len); |
771 | oc->controller_id = ntohs(nac->controller_id); | |
772 | oc->reason = nac->reason; | |
ce058104 | 773 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
774 | |
775 | return 0; | |
776 | } | |
777 | ||
778 | static enum ofperr | |
aad28f47 | 779 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
780 | enum ofp_version ofp_version OVS_UNUSED, |
781 | struct ofpbuf *out) | |
782 | { | |
aad28f47 | 783 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
784 | return OFPERR_NXBRC_MUST_BE_ZERO; |
785 | } | |
786 | ||
787 | size_t start_ofs = out->size; | |
788 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
789 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
790 | oc->max_len = UINT16_MAX; | |
791 | oc->reason = OFPR_ACTION; | |
792 | ||
793 | struct ofpbuf properties; | |
aad28f47 BP |
794 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
795 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
796 | |
797 | while (properties.size > 0) { | |
798 | struct ofpbuf payload; | |
799 | uint64_t type; | |
800 | ||
801 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
802 | if (error) { | |
803 | return error; | |
804 | } | |
805 | ||
806 | switch (type) { | |
807 | case NXAC2PT_MAX_LEN: | |
808 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
809 | break; | |
810 | ||
811 | case NXAC2PT_CONTROLLER_ID: | |
812 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
813 | break; | |
814 | ||
815 | case NXAC2PT_REASON: { | |
816 | uint8_t u8; | |
817 | error = ofpprop_parse_u8(&payload, &u8); | |
818 | oc->reason = u8; | |
819 | break; | |
820 | } | |
821 | ||
822 | case NXAC2PT_USERDATA: | |
823 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
824 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
825 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
826 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
827 | break; | |
828 | ||
77ab5fd2 BP |
829 | case NXAC2PT_PAUSE: |
830 | oc->pause = true; | |
831 | break; | |
832 | ||
bdcad671 BP |
833 | default: |
834 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
835 | break; | |
836 | } | |
837 | if (error) { | |
838 | return error; | |
839 | } | |
840 | } | |
841 | ||
ce058104 | 842 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 843 | |
c2d936a4 | 844 | return 0; |
f25d0cf3 BP |
845 | } |
846 | ||
c2d936a4 BP |
847 | static void |
848 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
849 | enum ofp_version ofp_version OVS_UNUSED, | |
850 | struct ofpbuf *out) | |
4cceacb9 | 851 | { |
bdcad671 | 852 | if (controller->userdata_len |
77ab5fd2 | 853 | || controller->pause |
bdcad671 BP |
854 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
855 | size_t start_ofs = out->size; | |
856 | put_NXAST_CONTROLLER2(out); | |
857 | if (controller->max_len != UINT16_MAX) { | |
858 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
859 | } | |
860 | if (controller->controller_id != 0) { | |
861 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
862 | controller->controller_id); | |
863 | } | |
864 | if (controller->reason != OFPR_ACTION) { | |
865 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
866 | } | |
867 | if (controller->userdata_len != 0) { | |
868 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
869 | controller->userdata_len); | |
870 | } | |
77ab5fd2 BP |
871 | if (controller->pause) { |
872 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
873 | } | |
bdcad671 BP |
874 | pad_ofpat(out, start_ofs); |
875 | } else { | |
876 | struct nx_action_controller *nac; | |
4cceacb9 | 877 | |
bdcad671 BP |
878 | nac = put_NXAST_CONTROLLER(out); |
879 | nac->max_len = htons(controller->max_len); | |
880 | nac->controller_id = htons(controller->controller_id); | |
881 | nac->reason = controller->reason; | |
882 | } | |
c2d936a4 BP |
883 | } |
884 | ||
cab50449 | 885 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
886 | parse_CONTROLLER(char *arg, |
887 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
888 | struct ofpbuf *ofpacts, | |
889 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 BP |
890 | { |
891 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
892 | uint16_t controller_id = 0; | |
893 | uint16_t max_len = UINT16_MAX; | |
bdcad671 | 894 | const char *userdata = NULL; |
77ab5fd2 | 895 | bool pause = false; |
c2d936a4 BP |
896 | |
897 | if (!arg[0]) { | |
898 | /* Use defaults. */ | |
899 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
900 | char *error = str_to_u16(arg, "max_len", &max_len); | |
901 | if (error) { | |
902 | return error; | |
903 | } | |
904 | } else { | |
905 | char *name, *value; | |
906 | ||
907 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
908 | if (!strcmp(name, "reason")) { | |
909 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
910 | return xasprintf("unknown reason \"%s\"", value); | |
911 | } | |
912 | } else if (!strcmp(name, "max_len")) { | |
913 | char *error = str_to_u16(value, "max_len", &max_len); | |
914 | if (error) { | |
915 | return error; | |
916 | } | |
917 | } else if (!strcmp(name, "id")) { | |
918 | char *error = str_to_u16(value, "id", &controller_id); | |
919 | if (error) { | |
920 | return error; | |
921 | } | |
bdcad671 BP |
922 | } else if (!strcmp(name, "userdata")) { |
923 | userdata = value; | |
77ab5fd2 BP |
924 | } else if (!strcmp(name, "pause")) { |
925 | pause = true; | |
c2d936a4 BP |
926 | } else { |
927 | return xasprintf("unknown key \"%s\" parsing controller " | |
928 | "action", name); | |
929 | } | |
930 | } | |
4cceacb9 JS |
931 | } |
932 | ||
77ab5fd2 | 933 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause) { |
c2d936a4 | 934 | struct ofpact_output *output; |
4cceacb9 | 935 | |
c2d936a4 BP |
936 | output = ofpact_put_OUTPUT(ofpacts); |
937 | output->port = OFPP_CONTROLLER; | |
938 | output->max_len = max_len; | |
939 | } else { | |
940 | struct ofpact_controller *controller; | |
941 | ||
942 | controller = ofpact_put_CONTROLLER(ofpacts); | |
943 | controller->max_len = max_len; | |
944 | controller->reason = reason; | |
945 | controller->controller_id = controller_id; | |
77ab5fd2 | 946 | controller->pause = pause; |
bdcad671 BP |
947 | |
948 | if (userdata) { | |
949 | size_t start_ofs = ofpacts->size; | |
950 | const char *end = ofpbuf_put_hex(ofpacts, userdata, NULL); | |
951 | if (*end) { | |
952 | return xstrdup("bad hex digit in `controller' " | |
953 | "action `userdata'"); | |
954 | } | |
955 | size_t userdata_len = ofpacts->size - start_ofs; | |
956 | controller = ofpacts->header; | |
957 | controller->userdata_len = userdata_len; | |
958 | } | |
ce058104 | 959 | ofpact_finish_CONTROLLER(ofpacts, &controller); |
c2d936a4 BP |
960 | } |
961 | ||
962 | return NULL; | |
4cceacb9 JS |
963 | } |
964 | ||
bdcad671 BP |
965 | static void |
966 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
967 | { | |
968 | for (size_t i = 0; i < len; i++) { | |
969 | if (i) { | |
970 | ds_put_char(s, '.'); | |
971 | } | |
972 | ds_put_format(s, "%02"PRIx8, data[i]); | |
973 | } | |
974 | } | |
975 | ||
f25d0cf3 | 976 | static void |
50f96b10 BP |
977 | format_CONTROLLER(const struct ofpact_controller *a, |
978 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
979 | struct ds *s) | |
f25d0cf3 | 980 | { |
77ab5fd2 BP |
981 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
982 | && !a->pause) { | |
b1c5bf1f QM |
983 | ds_put_format(s, "%sCONTROLLER:%s%"PRIu16, |
984 | colors.special, colors.end, a->max_len); | |
c2d936a4 BP |
985 | } else { |
986 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 987 | |
b1c5bf1f | 988 | ds_put_format(s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
989 | if (reason != OFPR_ACTION) { |
990 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
991 | ||
b1c5bf1f | 992 | ds_put_format(s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
993 | ofputil_packet_in_reason_to_string( |
994 | reason, reasonbuf, sizeof reasonbuf)); | |
995 | } | |
996 | if (a->max_len != UINT16_MAX) { | |
b1c5bf1f QM |
997 | ds_put_format(s, "%smax_len=%s%"PRIu16",", |
998 | colors.param, colors.end, a->max_len); | |
c2d936a4 BP |
999 | } |
1000 | if (a->controller_id != 0) { | |
b1c5bf1f QM |
1001 | ds_put_format(s, "%sid=%s%"PRIu16",", |
1002 | colors.param, colors.end, a->controller_id); | |
c2d936a4 | 1003 | } |
bdcad671 | 1004 | if (a->userdata_len) { |
b1c5bf1f | 1005 | ds_put_format(s, "%suserdata=%s", colors.param, colors.end); |
bdcad671 BP |
1006 | format_hex_arg(s, a->userdata, a->userdata_len); |
1007 | ds_put_char(s, ','); | |
1008 | } | |
77ab5fd2 | 1009 | if (a->pause) { |
b1c5bf1f | 1010 | ds_put_format(s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 1011 | } |
c2d936a4 | 1012 | ds_chomp(s, ','); |
b1c5bf1f | 1013 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 | 1014 | } |
f25d0cf3 | 1015 | } |
c2d936a4 BP |
1016 | \f |
1017 | /* Enqueue action. */ | |
1018 | struct ofp10_action_enqueue { | |
1019 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
1020 | ovs_be16 len; /* Len is 16. */ | |
1021 | ovs_be16 port; /* Port that queue belongs. Should | |
1022 | refer to a valid physical port | |
1023 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
1024 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
1025 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
1026 | }; | |
1027 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 1028 | |
c2d967a5 | 1029 | static enum ofperr |
c2d936a4 | 1030 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 1031 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1032 | struct ofpbuf *out) |
c2d967a5 | 1033 | { |
c2d936a4 | 1034 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 1035 | |
c2d936a4 BP |
1036 | enqueue = ofpact_put_ENQUEUE(out); |
1037 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
1038 | enqueue->queue = ntohl(oae->queue_id); | |
1039 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
1040 | && enqueue->port != OFPP_IN_PORT | |
1041 | && enqueue->port != OFPP_LOCAL) { | |
1042 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1043 | } | |
1044 | return 0; | |
c2d967a5 MM |
1045 | } |
1046 | ||
c2d936a4 BP |
1047 | static void |
1048 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1049 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1050 | { |
c2d936a4 BP |
1051 | if (ofp_version == OFP10_VERSION) { |
1052 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1053 | |
c2d936a4 BP |
1054 | oae = put_OFPAT10_ENQUEUE(out); |
1055 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1056 | oae->queue_id = htonl(enqueue->queue); | |
1057 | } else { | |
0f2aaee9 BP |
1058 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1059 | ||
1060 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1061 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1062 | oao->max_len = OVS_BE16_MAX; | |
1063 | ||
1064 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1065 | } |
c2d936a4 | 1066 | } |
c2d967a5 | 1067 | |
cab50449 | 1068 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1069 | parse_ENQUEUE(char *arg, |
1070 | const struct ofputil_port_map *port_map, | |
1071 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1072 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1073 | { | |
1074 | char *sp = NULL; | |
1075 | char *port = strtok_r(arg, ":q,", &sp); | |
1076 | char *queue = strtok_r(NULL, "", &sp); | |
1077 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1078 | |
c2d936a4 BP |
1079 | if (port == NULL || queue == NULL) { |
1080 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1081 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1082 | } |
1083 | ||
c2d936a4 | 1084 | enqueue = ofpact_put_ENQUEUE(ofpacts); |
50f96b10 | 1085 | if (!ofputil_port_from_string(port, port_map, &enqueue->port)) { |
c2d936a4 BP |
1086 | return xasprintf("%s: enqueue to unknown port", port); |
1087 | } | |
1088 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1089 | } |
1090 | ||
c2d936a4 | 1091 | static void |
50f96b10 BP |
1092 | format_ENQUEUE(const struct ofpact_enqueue *a, |
1093 | const struct ofputil_port_map *port_map, struct ds *s) | |
29089a54 | 1094 | { |
b1c5bf1f | 1095 | ds_put_format(s, "%senqueue:%s", colors.param, colors.end); |
50f96b10 | 1096 | ofputil_format_port(a->port, port_map, s); |
c2d936a4 BP |
1097 | ds_put_format(s, ":%"PRIu32, a->queue); |
1098 | } | |
1099 | \f | |
1100 | /* Action structure for NXAST_OUTPUT_REG. | |
1101 | * | |
1102 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1103 | * | |
1104 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1105 | * the NXAST_REG_LOAD action. | |
1106 | * | |
1107 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1108 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1109 | * | |
1110 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1111 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1112 | * field of OFPAT_OUTPUT. | |
1113 | * | |
1114 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1115 | struct nx_action_output_reg { | |
1116 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1117 | ovs_be16 len; /* 24. */ | |
1118 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1119 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1120 | |
c2d936a4 BP |
1121 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1122 | ovs_be32 src; /* Source. */ | |
29089a54 | 1123 | |
c2d936a4 | 1124 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1125 | |
c2d936a4 BP |
1126 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1127 | }; | |
1128 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1129 | |
bad8a439 BP |
1130 | /* Action structure for NXAST_OUTPUT_REG2. |
1131 | * | |
1132 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1133 | * experimenter OXM as 'src'. | |
1134 | */ | |
1135 | struct nx_action_output_reg2 { | |
1136 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1137 | ovs_be16 len; /* 24. */ | |
1138 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1139 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1140 | ||
1141 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1142 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1143 | ||
1144 | /* Followed by: | |
1145 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1146 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1147 | uint8_t pad[10]; | |
1148 | }; | |
1149 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1150 | ||
a7a2d006 | 1151 | static enum ofperr |
c2d936a4 | 1152 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1153 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1154 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1155 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
a7a2d006 | 1156 | { |
c2d936a4 | 1157 | struct ofpact_output_reg *output_reg; |
5c7c16d8 | 1158 | enum ofperr error; |
a7a2d006 | 1159 | |
c2d936a4 | 1160 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1161 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1162 | } | |
a7a2d006 | 1163 | |
c2d936a4 | 1164 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1165 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1166 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); |
1167 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1168 | output_reg->max_len = ntohs(naor->max_len); | |
5c7c16d8 YHW |
1169 | error = mf_vl_mff_mf_from_nxm_header(ntohl(naor->src), vl_mff_map, |
1170 | &output_reg->src.field, tlv_bitmap); | |
1171 | if (error) { | |
1172 | return error; | |
04f48a68 YHW |
1173 | } |
1174 | ||
c2d936a4 | 1175 | return mf_check_src(&output_reg->src, NULL); |
a7a2d006 JS |
1176 | } |
1177 | ||
bad8a439 BP |
1178 | static enum ofperr |
1179 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 | 1180 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1181 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1182 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 BP |
1183 | { |
1184 | struct ofpact_output_reg *output_reg; | |
5c7c16d8 YHW |
1185 | enum ofperr error; |
1186 | ||
bad8a439 BP |
1187 | output_reg = ofpact_put_OUTPUT_REG(out); |
1188 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1189 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1190 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1191 | output_reg->max_len = ntohs(naor->max_len); | |
1192 | ||
0a2869d5 | 1193 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1194 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 | 1195 | |
5c7c16d8 YHW |
1196 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &output_reg->src.field, |
1197 | NULL, tlv_bitmap); | |
bad8a439 BP |
1198 | if (error) { |
1199 | return error; | |
1200 | } | |
5c7c16d8 | 1201 | |
6fd6ed71 | 1202 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1203 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1204 | } | |
1205 | ||
1206 | return mf_check_src(&output_reg->src, NULL); | |
1207 | } | |
1208 | ||
c2d936a4 BP |
1209 | static void |
1210 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1211 | enum ofp_version ofp_version OVS_UNUSED, | |
1212 | struct ofpbuf *out) | |
f25d0cf3 | 1213 | { |
bad8a439 BP |
1214 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1215 | * cannot be encoded in the older form, encode it as | |
1216 | * NXAST_RAW_OUTPUT_REG2. */ | |
1217 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1218 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1219 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1220 | size_t size = out->size; |
bad8a439 BP |
1221 | |
1222 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1223 | output_reg->src.n_bits); | |
1224 | naor->max_len = htons(output_reg->max_len); | |
1225 | ||
6fd6ed71 | 1226 | out->size = size - sizeof naor->pad; |
04f48a68 | 1227 | nx_put_mff_header(out, output_reg->src.field, 0, false); |
6fd6ed71 | 1228 | out->size = size; |
bad8a439 BP |
1229 | } else { |
1230 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1231 | |
bad8a439 BP |
1232 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1233 | output_reg->src.n_bits); | |
04f48a68 | 1234 | naor->src = htonl(nxm_header_from_mff(output_reg->src.field)); |
bad8a439 BP |
1235 | naor->max_len = htons(output_reg->max_len); |
1236 | } | |
f25d0cf3 BP |
1237 | } |
1238 | ||
cab50449 | 1239 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1240 | parse_OUTPUT_REG(const char *arg, |
1241 | const struct ofputil_port_map *port_map, | |
1242 | struct ofpbuf *ofpacts, | |
c2d936a4 | 1243 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
f25d0cf3 | 1244 | { |
50f96b10 | 1245 | return parse_OUTPUT(arg, port_map, ofpacts, usable_protocols); |
f25d0cf3 BP |
1246 | } |
1247 | ||
c2d936a4 | 1248 | static void |
50f96b10 BP |
1249 | format_OUTPUT_REG(const struct ofpact_output_reg *a, |
1250 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1251 | struct ds *s) | |
f25d0cf3 | 1252 | { |
b1c5bf1f | 1253 | ds_put_format(s, "%soutput:%s", colors.special, colors.end); |
c2d936a4 BP |
1254 | mf_format_subfield(&a->src, s); |
1255 | } | |
1256 | \f | |
1257 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1258 | * | |
1259 | * The bundle actions choose a slave from a supplied list of options. | |
1260 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1261 | * selection to a register. | |
1262 | * | |
1263 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1264 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1265 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1266 | * the total length of the action a multiple of 8. | |
1267 | * | |
1268 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1269 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1270 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1271 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1272 | * unsupported slave types. | |
1273 | * | |
1274 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1275 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1276 | * it should reject the action. | |
1277 | * | |
1278 | * Several algorithms take into account liveness when selecting slaves. The | |
1279 | * liveness of a slave is implementation defined (with one exception), but will | |
1280 | * generally take into account things like its carrier status and the results | |
1281 | * of any link monitoring protocols which happen to be running on it. In order | |
1282 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
63460a30 TLSC |
1283 | * considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the output |
1284 | * register if no slave is live. | |
c2d936a4 BP |
1285 | * |
1286 | * Some slave selection strategies require the use of a hash function, in which | |
1287 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1288 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1289 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1290 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1291 | * of 'basis' yield different hash results. | |
1292 | * | |
1293 | * The 'zero' parameter at the end of the action structure is reserved for | |
1294 | * future use. Switches are required to reject actions which have nonzero | |
1295 | * bytes in the 'zero' field. | |
1296 | * | |
1297 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1298 | * should reject actions which have nonzero bytes in either of these fields. | |
1299 | * | |
1300 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1301 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1302 | * similar to those for the NXAST_REG_LOAD action. */ | |
1303 | struct nx_action_bundle { | |
1304 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1305 | ovs_be16 len; /* Length including slaves. */ | |
1306 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1307 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1308 | |
c2d936a4 BP |
1309 | /* Slave choice algorithm to apply to hash value. */ |
1310 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1311 | |
c2d936a4 BP |
1312 | /* What fields to hash and how. */ |
1313 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1314 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1315 | |
c2d936a4 BP |
1316 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1317 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1318 | |
c2d936a4 BP |
1319 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1320 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1321 | |
c2d936a4 BP |
1322 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1323 | }; | |
1324 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1325 | |
c2d936a4 BP |
1326 | static enum ofperr |
1327 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
5c7c16d8 YHW |
1328 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
1329 | struct ofpbuf *ofpacts) | |
c2d936a4 BP |
1330 | { |
1331 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
1332 | struct ofpact_bundle *bundle; | |
1333 | uint32_t slave_type; | |
1334 | size_t slaves_size, i; | |
1335 | enum ofperr error; | |
bd85dac1 | 1336 | |
c2d936a4 BP |
1337 | bundle = ofpact_put_BUNDLE(ofpacts); |
1338 | ||
1339 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1340 | bundle->basis = ntohs(nab->basis); | |
1341 | bundle->fields = ntohs(nab->fields); | |
1342 | bundle->algorithm = ntohs(nab->algorithm); | |
1343 | slave_type = ntohl(nab->slave_type); | |
1344 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1345 | ||
1346 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1347 | if (!flow_hash_fields_valid(bundle->fields)) { | |
1348 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) bundle->fields); | |
1349 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { | |
1350 | VLOG_WARN_RL(&rl, "too many slaves"); | |
1351 | } else if (bundle->algorithm != NX_BD_ALG_HRW | |
1352 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
1353 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) bundle->algorithm); | |
508a9338 | 1354 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
fd13c6b5 | 1355 | VLOG_WARN_RL(&rl, "unsupported slave type %"PRIu32, slave_type); |
c2d936a4 BP |
1356 | } else { |
1357 | error = 0; | |
1358 | } | |
bd85dac1 | 1359 | |
c2d936a4 BP |
1360 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
1361 | VLOG_WARN_RL(&rl, "reserved field is nonzero"); | |
1362 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1363 | } | |
f25d0cf3 | 1364 | |
c2d936a4 | 1365 | if (load) { |
c2d936a4 BP |
1366 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); |
1367 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
5c7c16d8 YHW |
1368 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nab->dst), vl_mff_map, |
1369 | &bundle->dst.field, tlv_bitmap); | |
1370 | if (error) { | |
1371 | return error; | |
04f48a68 | 1372 | } |
f25d0cf3 | 1373 | |
c2d936a4 BP |
1374 | if (bundle->dst.n_bits < 16) { |
1375 | VLOG_WARN_RL(&rl, "bundle_load action requires at least 16 bit " | |
1376 | "destination."); | |
1377 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1378 | } | |
1379 | } else { | |
1380 | if (nab->ofs_nbits || nab->dst) { | |
1381 | VLOG_WARN_RL(&rl, "bundle action has nonzero reserved fields"); | |
1382 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1383 | } | |
1384 | } | |
f25d0cf3 | 1385 | |
c2d936a4 BP |
1386 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
1387 | VLOG_WARN_RL(&rl, "Nicira action %s only has %"PRIuSIZE" bytes " | |
1388 | "allocated for slaves. %"PRIuSIZE" bytes are required " | |
fd13c6b5 | 1389 | "for %u slaves.", |
c2d936a4 BP |
1390 | load ? "bundle_load" : "bundle", slaves_size, |
1391 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1392 | error = OFPERR_OFPBAC_BAD_LEN; | |
1393 | } | |
f25d0cf3 | 1394 | |
c2d936a4 | 1395 | for (i = 0; i < bundle->n_slaves; i++) { |
117d7249 | 1396 | ofp_port_t ofp_port = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); |
c2d936a4 | 1397 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); |
19b58f3c | 1398 | bundle = ofpacts->header; |
c2d936a4 | 1399 | } |
f25d0cf3 | 1400 | |
ce058104 | 1401 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1402 | if (!error) { |
1403 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1404 | } | |
1405 | return error; | |
1406 | } | |
f25d0cf3 | 1407 | |
c2d936a4 | 1408 | static enum ofperr |
f3cd3ac7 JS |
1409 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1410 | enum ofp_version ofp_version OVS_UNUSED, | |
1411 | struct ofpbuf *out) | |
c2d936a4 | 1412 | { |
5c7c16d8 | 1413 | return decode_bundle(false, nab, NULL, NULL, out); |
c2d936a4 | 1414 | } |
f25d0cf3 | 1415 | |
c2d936a4 BP |
1416 | static enum ofperr |
1417 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1418 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1419 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1420 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 | 1421 | { |
5c7c16d8 | 1422 | return decode_bundle(true, nab, vl_mff_map, tlv_bitmap, out); |
c2d936a4 | 1423 | } |
c2d967a5 | 1424 | |
c2d936a4 BP |
1425 | static void |
1426 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1427 | enum ofp_version ofp_version OVS_UNUSED, | |
1428 | struct ofpbuf *out) | |
1429 | { | |
1430 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1431 | struct nx_action_bundle *nab; | |
1432 | ovs_be16 *slaves; | |
1433 | size_t i; | |
f25d0cf3 | 1434 | |
c2d936a4 BP |
1435 | nab = (bundle->dst.field |
1436 | ? put_NXAST_BUNDLE_LOAD(out) | |
1437 | : put_NXAST_BUNDLE(out)); | |
1438 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1439 | nab->algorithm = htons(bundle->algorithm); | |
1440 | nab->fields = htons(bundle->fields); | |
1441 | nab->basis = htons(bundle->basis); | |
508a9338 | 1442 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1443 | nab->n_slaves = htons(bundle->n_slaves); |
1444 | if (bundle->dst.field) { | |
1445 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1446 | bundle->dst.n_bits); | |
04f48a68 | 1447 | nab->dst = htonl(nxm_header_from_mff(bundle->dst.field)); |
c2d936a4 | 1448 | } |
f25d0cf3 | 1449 | |
c2d936a4 BP |
1450 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1451 | for (i = 0; i < bundle->n_slaves; i++) { | |
1452 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1453 | } | |
1454 | } | |
b02475c5 | 1455 | |
cab50449 | 1456 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1457 | parse_BUNDLE(const char *arg, const struct ofputil_port_map *port_map, |
1458 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1459 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1460 | { | |
50f96b10 | 1461 | return bundle_parse(arg, port_map, ofpacts); |
c2d936a4 | 1462 | } |
b02475c5 | 1463 | |
cab50449 | 1464 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1465 | parse_bundle_load(const char *arg, const struct ofputil_port_map *port_map, |
1466 | struct ofpbuf *ofpacts) | |
c2d936a4 | 1467 | { |
50f96b10 | 1468 | return bundle_parse_load(arg, port_map, ofpacts); |
c2d936a4 | 1469 | } |
097d4939 | 1470 | |
c2d936a4 | 1471 | static void |
50f96b10 BP |
1472 | format_BUNDLE(const struct ofpact_bundle *a, |
1473 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 | 1474 | { |
50f96b10 | 1475 | bundle_format(a, port_map, s); |
c2d936a4 BP |
1476 | } |
1477 | \f | |
1478 | /* Set VLAN actions. */ | |
097d4939 | 1479 | |
c2d936a4 BP |
1480 | static enum ofperr |
1481 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1482 | { | |
1483 | if (vid & ~0xfff) { | |
1484 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1485 | } else { | |
1486 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1487 | vlan_vid->vlan_vid = vid; | |
1488 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1489 | return 0; | |
1490 | } | |
1491 | } | |
0f3f3c3d | 1492 | |
c2d936a4 | 1493 | static enum ofperr |
f3cd3ac7 JS |
1494 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1495 | enum ofp_version ofp_version OVS_UNUSED, | |
1496 | struct ofpbuf *out) | |
c2d936a4 BP |
1497 | { |
1498 | return decode_set_vlan_vid(vid, true, out); | |
1499 | } | |
b676167a | 1500 | |
c2d936a4 | 1501 | static enum ofperr |
f3cd3ac7 JS |
1502 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1503 | enum ofp_version ofp_version OVS_UNUSED, | |
1504 | struct ofpbuf *out) | |
c2d936a4 BP |
1505 | { |
1506 | return decode_set_vlan_vid(vid, false, out); | |
1507 | } | |
29089a54 | 1508 | |
c2d936a4 BP |
1509 | static void |
1510 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1511 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1512 | { | |
1513 | uint16_t vid = vlan_vid->vlan_vid; | |
1514 | ||
1515 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1516 | * for such a feature. */ | |
1517 | if (ofp_version > OFP10_VERSION | |
1518 | && vlan_vid->push_vlan_if_needed | |
1519 | && !vlan_vid->flow_has_vlan) { | |
1520 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1521 | } |
1522 | ||
c2d936a4 BP |
1523 | if (ofp_version == OFP10_VERSION) { |
1524 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1525 | } else if (ofp_version == OFP11_VERSION) { | |
1526 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1527 | } else { | |
128684a6 | 1528 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1529 | } |
f25d0cf3 BP |
1530 | } |
1531 | ||
cab50449 | 1532 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1533 | parse_set_vlan_vid(char *arg, |
1534 | struct ofpbuf *ofpacts, bool push_vlan_if_needed) | |
d01c980f | 1535 | { |
ca287d20 | 1536 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1537 | uint16_t vid; |
1538 | char *error; | |
d01c980f | 1539 | |
c2d936a4 | 1540 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1541 | if (error) { |
1542 | return error; | |
1543 | } | |
1544 | ||
c2d936a4 BP |
1545 | if (vid & ~VLAN_VID_MASK) { |
1546 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1547 | } |
c2d936a4 BP |
1548 | vlan_vid = ofpact_put_SET_VLAN_VID(ofpacts); |
1549 | vlan_vid->vlan_vid = vid; | |
1550 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1551 | return NULL; | |
1552 | } | |
d01c980f | 1553 | |
cab50449 | 1554 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1555 | parse_SET_VLAN_VID(char *arg, |
1556 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1557 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1558 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1559 | { | |
1560 | return parse_set_vlan_vid(arg, ofpacts, false); | |
d01c980f BP |
1561 | } |
1562 | ||
c2d936a4 | 1563 | static void |
50f96b10 BP |
1564 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, |
1565 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1566 | struct ds *s) | |
c2d936a4 | 1567 | { |
b1c5bf1f | 1568 | ds_put_format(s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1569 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1570 | colors.end, a->vlan_vid); |
c2d936a4 BP |
1571 | } |
1572 | \f | |
1573 | /* Set PCP actions. */ | |
e3f8f887 | 1574 | |
c2d936a4 BP |
1575 | static enum ofperr |
1576 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1577 | { |
c2d936a4 BP |
1578 | if (pcp & ~7) { |
1579 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1580 | } else { | |
1581 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1582 | vlan_pcp->vlan_pcp = pcp; | |
1583 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1584 | return 0; | |
1585 | } | |
f25d0cf3 BP |
1586 | } |
1587 | ||
c2d936a4 | 1588 | static enum ofperr |
f3cd3ac7 JS |
1589 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1590 | enum ofp_version ofp_version OVS_UNUSED, | |
1591 | struct ofpbuf *out) | |
f25d0cf3 | 1592 | { |
c2d936a4 | 1593 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1594 | } |
1595 | ||
c2d936a4 | 1596 | static enum ofperr |
f3cd3ac7 JS |
1597 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1598 | enum ofp_version ofp_version OVS_UNUSED, | |
1599 | struct ofpbuf *out) | |
c2d936a4 BP |
1600 | { |
1601 | return decode_set_vlan_pcp(pcp, false, out); | |
1602 | } | |
f25d0cf3 | 1603 | |
699dddf1 | 1604 | static void |
c2d936a4 BP |
1605 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1606 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1607 | { |
c2d936a4 BP |
1608 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1609 | ||
1610 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1611 | * for such a feature. */ | |
1612 | if (ofp_version > OFP10_VERSION | |
1613 | && vlan_pcp->push_vlan_if_needed | |
1614 | && !vlan_pcp->flow_has_vlan) { | |
1615 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1616 | } | |
699dddf1 | 1617 | |
c2d936a4 BP |
1618 | if (ofp_version == OFP10_VERSION) { |
1619 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1620 | } else if (ofp_version == OFP11_VERSION) { | |
1621 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1622 | } else { | |
128684a6 | 1623 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1624 | } |
1625 | } | |
1626 | ||
cab50449 | 1627 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1628 | parse_set_vlan_pcp(char *arg, |
1629 | struct ofpbuf *ofpacts, bool push_vlan_if_needed) | |
f25d0cf3 | 1630 | { |
c2d936a4 BP |
1631 | struct ofpact_vlan_pcp *vlan_pcp; |
1632 | uint8_t pcp; | |
1633 | char *error; | |
e3f8f887 | 1634 | |
c2d936a4 BP |
1635 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1636 | if (error) { | |
699dddf1 | 1637 | return error; |
f25d0cf3 BP |
1638 | } |
1639 | ||
c2d936a4 BP |
1640 | if (pcp & ~7) { |
1641 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1642 | } | |
1643 | vlan_pcp = ofpact_put_SET_VLAN_PCP(ofpacts); | |
1644 | vlan_pcp->vlan_pcp = pcp; | |
1645 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1646 | return NULL; | |
1647 | } | |
1648 | ||
cab50449 | 1649 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1650 | parse_SET_VLAN_PCP(char *arg, |
1651 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1652 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1653 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1654 | { | |
1655 | return parse_set_vlan_pcp(arg, ofpacts, false); | |
1656 | } | |
1657 | ||
1658 | static void | |
50f96b10 BP |
1659 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, |
1660 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1661 | struct ds *s) | |
c2d936a4 | 1662 | { |
b1c5bf1f | 1663 | ds_put_format(s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1664 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1665 | colors.end, a->vlan_pcp); |
c2d936a4 BP |
1666 | } |
1667 | \f | |
1668 | /* Strip VLAN actions. */ | |
1669 | ||
1670 | static enum ofperr | |
1671 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1672 | { | |
1673 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1674 | return 0; |
1675 | } | |
1676 | ||
8f2cded4 | 1677 | static enum ofperr |
c2d936a4 | 1678 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1679 | { |
c2d936a4 BP |
1680 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1681 | return 0; | |
1682 | } | |
f25d0cf3 | 1683 | |
c2d936a4 BP |
1684 | static void |
1685 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1686 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1687 | { | |
1688 | if (ofp_version == OFP10_VERSION) { | |
1689 | put_OFPAT10_STRIP_VLAN(out); | |
1690 | } else { | |
1691 | put_OFPAT11_POP_VLAN(out); | |
1692 | } | |
1693 | } | |
f25d0cf3 | 1694 | |
cab50449 | 1695 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1696 | parse_STRIP_VLAN(char *arg OVS_UNUSED, |
1697 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1698 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1699 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1700 | { | |
1701 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
1702 | return NULL; | |
1703 | } | |
1704 | ||
cab50449 | 1705 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
1706 | parse_pop_vlan(struct ofpbuf *ofpacts) |
1707 | { | |
1708 | ofpact_put_STRIP_VLAN(ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; | |
1709 | return NULL; | |
1710 | } | |
1711 | ||
1712 | static void | |
50f96b10 BP |
1713 | format_STRIP_VLAN(const struct ofpact_null *a, |
1714 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1715 | struct ds *s) | |
c2d936a4 | 1716 | { |
b1c5bf1f QM |
1717 | ds_put_format(s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
1718 | ? "%spop_vlan%s" | |
1719 | : "%sstrip_vlan%s"), | |
1720 | colors.value, colors.end); | |
c2d936a4 BP |
1721 | } |
1722 | \f | |
1723 | /* Push VLAN action. */ | |
1724 | ||
1725 | static enum ofperr | |
f3cd3ac7 JS |
1726 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1727 | enum ofp_version ofp_version OVS_UNUSED, | |
1728 | struct ofpbuf *out) | |
c2d936a4 | 1729 | { |
f0fb825a EG |
1730 | struct ofpact_push_vlan *push_vlan; |
1731 | if (!eth_type_vlan(eth_type)) { | |
c2d936a4 | 1732 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
f25d0cf3 | 1733 | } |
f0fb825a EG |
1734 | push_vlan = ofpact_put_PUSH_VLAN(out); |
1735 | push_vlan->ethertype = eth_type; | |
c2d936a4 BP |
1736 | return 0; |
1737 | } | |
f25d0cf3 | 1738 | |
c2d936a4 | 1739 | static void |
f0fb825a | 1740 | encode_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
c2d936a4 BP |
1741 | enum ofp_version ofp_version, struct ofpbuf *out) |
1742 | { | |
1743 | if (ofp_version == OFP10_VERSION) { | |
1744 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1745 | * follow this action. */ | |
1746 | } else { | |
f0fb825a | 1747 | put_OFPAT11_PUSH_VLAN(out, push_vlan->ethertype); |
f25d0cf3 | 1748 | } |
c2d936a4 | 1749 | } |
f25d0cf3 | 1750 | |
cab50449 | 1751 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1752 | parse_PUSH_VLAN(char *arg, |
1753 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1754 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1755 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1756 | { | |
f0fb825a | 1757 | struct ofpact_push_vlan *push_vlan; |
c2d936a4 BP |
1758 | uint16_t ethertype; |
1759 | char *error; | |
1760 | ||
1761 | *usable_protocols &= OFPUTIL_P_OF11_UP; | |
1762 | error = str_to_u16(arg, "ethertype", ðertype); | |
4cceacb9 | 1763 | if (error) { |
4cceacb9 JS |
1764 | return error; |
1765 | } | |
1766 | ||
f0fb825a | 1767 | if (!eth_type_vlan(htons(ethertype))) { |
c2d936a4 | 1768 | return xasprintf("%s: not a valid VLAN ethertype", arg); |
f25d0cf3 | 1769 | } |
f0fb825a EG |
1770 | push_vlan = ofpact_put_PUSH_VLAN(ofpacts); |
1771 | push_vlan->ethertype = htons(ethertype); | |
c2d936a4 | 1772 | return NULL; |
d01c980f BP |
1773 | } |
1774 | ||
c2d936a4 | 1775 | static void |
50f96b10 BP |
1776 | format_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
1777 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1778 | struct ds *s) | |
8f2cded4 | 1779 | { |
b1c5bf1f | 1780 | ds_put_format(s, "%spush_vlan:%s%#"PRIx16, |
f0fb825a | 1781 | colors.param, colors.end, ntohs(push_vlan->ethertype)); |
8f2cded4 | 1782 | } |
d01c980f | 1783 | \f |
c2d936a4 BP |
1784 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1785 | struct ofp_action_dl_addr { | |
1786 | ovs_be16 type; /* Type. */ | |
1787 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1788 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1789 | uint8_t pad[6]; |
1790 | }; | |
1791 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1792 | |
d01c980f | 1793 | static enum ofperr |
c2d936a4 | 1794 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1795 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1796 | struct ofpbuf *out) |
d01c980f | 1797 | { |
74ff3298 | 1798 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1799 | return 0; |
1800 | } | |
3ddcaf2d | 1801 | |
c2d936a4 BP |
1802 | static enum ofperr |
1803 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1804 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1805 | struct ofpbuf *out) |
1806 | { | |
74ff3298 | 1807 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1808 | return 0; |
1809 | } | |
d01c980f | 1810 | |
c2d936a4 BP |
1811 | static void |
1812 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1813 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1814 | struct ofpbuf *out) | |
1815 | { | |
c2d936a4 BP |
1816 | if (ofp_version < OFP12_VERSION) { |
1817 | struct ofp_action_dl_addr *oada; | |
1818 | ||
1819 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1820 | oada->dl_addr = mac->mac; |
c2d936a4 | 1821 | } else { |
128684a6 | 1822 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1823 | } |
1824 | } | |
1825 | ||
c2d936a4 BP |
1826 | static void |
1827 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1828 | struct ofpbuf *out) | |
b2dd70be | 1829 | { |
c2d936a4 BP |
1830 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1831 | out); | |
b2dd70be | 1832 | |
c2d936a4 | 1833 | } |
b2dd70be | 1834 | |
c2d936a4 BP |
1835 | static void |
1836 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1837 | enum ofp_version ofp_version, | |
1838 | struct ofpbuf *out) | |
1839 | { | |
1840 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1841 | out); | |
b2dd70be | 1842 | |
c2d936a4 | 1843 | } |
b2dd70be | 1844 | |
cab50449 | 1845 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1846 | parse_SET_ETH_SRC(char *arg, |
1847 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1848 | struct ofpbuf *ofpacts, | |
1849 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 | 1850 | { |
74ff3298 | 1851 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(ofpacts)->mac); |
c2d936a4 BP |
1852 | } |
1853 | ||
cab50449 | 1854 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1855 | parse_SET_ETH_DST(char *arg, |
1856 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1857 | struct ofpbuf *ofpacts, | |
1858 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 | 1859 | { |
74ff3298 | 1860 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(ofpacts)->mac); |
b2dd70be JR |
1861 | } |
1862 | ||
1863 | static void | |
50f96b10 BP |
1864 | format_SET_ETH_SRC(const struct ofpact_mac *a, |
1865 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1866 | struct ds *s) | |
b2dd70be | 1867 | { |
b1c5bf1f QM |
1868 | ds_put_format(s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
1869 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 | 1870 | } |
b2dd70be | 1871 | |
c2d936a4 | 1872 | static void |
50f96b10 BP |
1873 | format_SET_ETH_DST(const struct ofpact_mac *a, |
1874 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1875 | struct ds *s) | |
c2d936a4 | 1876 | { |
b1c5bf1f QM |
1877 | ds_put_format(s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
1878 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); | |
c2d936a4 BP |
1879 | } |
1880 | \f | |
1881 | /* Set IPv4 address actions. */ | |
b2dd70be | 1882 | |
c2d936a4 | 1883 | static enum ofperr |
f3cd3ac7 JS |
1884 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1885 | enum ofp_version ofp_version OVS_UNUSED, | |
1886 | struct ofpbuf *out) | |
c2d936a4 BP |
1887 | { |
1888 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1889 | return 0; | |
b2dd70be JR |
1890 | } |
1891 | ||
c2d936a4 | 1892 | static enum ofperr |
f3cd3ac7 JS |
1893 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
1894 | enum ofp_version ofp_version OVS_UNUSED, | |
1895 | struct ofpbuf *out) | |
b2dd70be | 1896 | { |
c2d936a4 BP |
1897 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
1898 | return 0; | |
1899 | } | |
b2dd70be | 1900 | |
c2d936a4 BP |
1901 | static void |
1902 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
1903 | enum ofp_version ofp_version, | |
1904 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1905 | struct ofpbuf *out) | |
1906 | { | |
1907 | ovs_be32 addr = ipv4->ipv4; | |
1908 | if (ofp_version < OFP12_VERSION) { | |
1909 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 1910 | } else { |
128684a6 | 1911 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
1912 | } |
1913 | } | |
1914 | ||
a6fd70bb | 1915 | static void |
c2d936a4 BP |
1916 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
1917 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1918 | { |
c2d936a4 BP |
1919 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
1920 | out); | |
1921 | } | |
a6fd70bb | 1922 | |
c2d936a4 BP |
1923 | static void |
1924 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
1925 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1926 | { | |
1927 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
1928 | out); | |
1929 | } | |
a6fd70bb | 1930 | |
cab50449 | 1931 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1932 | parse_SET_IPV4_SRC(char *arg, |
1933 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1934 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1935 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1936 | { | |
1937 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(ofpacts)->ipv4); | |
1938 | } | |
a6fd70bb | 1939 | |
cab50449 | 1940 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1941 | parse_SET_IPV4_DST(char *arg, |
1942 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1943 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
1944 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
1945 | { | |
1946 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(ofpacts)->ipv4); | |
1947 | } | |
a6fd70bb | 1948 | |
c2d936a4 | 1949 | static void |
50f96b10 BP |
1950 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, |
1951 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1952 | struct ds *s) | |
c2d936a4 | 1953 | { |
b1c5bf1f QM |
1954 | ds_put_format(s, "%smod_nw_src:%s"IP_FMT, |
1955 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 | 1956 | } |
097d4939 | 1957 | |
c2d936a4 | 1958 | static void |
50f96b10 BP |
1959 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, |
1960 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1961 | struct ds *s) | |
c2d936a4 | 1962 | { |
b1c5bf1f QM |
1963 | ds_put_format(s, "%smod_nw_dst:%s"IP_FMT, |
1964 | colors.param, colors.end, IP_ARGS(a->ipv4)); | |
c2d936a4 BP |
1965 | } |
1966 | \f | |
1967 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 1968 | |
c2d936a4 | 1969 | static enum ofperr |
f3cd3ac7 JS |
1970 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
1971 | enum ofp_version ofp_version OVS_UNUSED, | |
1972 | struct ofpbuf *out) | |
c2d936a4 BP |
1973 | { |
1974 | if (dscp & ~IP_DSCP_MASK) { | |
1975 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1976 | } else { | |
1977 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
1978 | return 0; | |
a6fd70bb JR |
1979 | } |
1980 | } | |
1981 | ||
a6fd70bb | 1982 | static void |
c2d936a4 BP |
1983 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
1984 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1985 | { |
c2d936a4 BP |
1986 | if (ofp_version < OFP12_VERSION) { |
1987 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
1988 | } else { | |
128684a6 | 1989 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
1990 | } |
1991 | } | |
a6fd70bb | 1992 | |
cab50449 | 1993 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
1994 | parse_SET_IP_DSCP(char *arg, |
1995 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
1996 | struct ofpbuf *ofpacts, | |
1997 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 BP |
1998 | { |
1999 | uint8_t tos; | |
2000 | char *error; | |
a6fd70bb | 2001 | |
c2d936a4 BP |
2002 | error = str_to_u8(arg, "TOS", &tos); |
2003 | if (error) { | |
2004 | return error; | |
2005 | } | |
a6fd70bb | 2006 | |
c2d936a4 BP |
2007 | if (tos & ~IP_DSCP_MASK) { |
2008 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 2009 | } |
c2d936a4 BP |
2010 | ofpact_put_SET_IP_DSCP(ofpacts)->dscp = tos; |
2011 | return NULL; | |
a6fd70bb JR |
2012 | } |
2013 | ||
b2dd70be | 2014 | static void |
50f96b10 BP |
2015 | format_SET_IP_DSCP(const struct ofpact_dscp *a, |
2016 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2017 | struct ds *s) | |
b2dd70be | 2018 | { |
b1c5bf1f | 2019 | ds_put_format(s, "%smod_nw_tos:%s%d", colors.param, colors.end, a->dscp); |
c2d936a4 BP |
2020 | } |
2021 | \f | |
2022 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 2023 | |
c2d936a4 | 2024 | static enum ofperr |
f3cd3ac7 JS |
2025 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
2026 | enum ofp_version ofp_version OVS_UNUSED, | |
2027 | struct ofpbuf *out) | |
c2d936a4 BP |
2028 | { |
2029 | if (ecn & ~IP_ECN_MASK) { | |
2030 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 2031 | } else { |
c2d936a4 BP |
2032 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
2033 | return 0; | |
b2dd70be JR |
2034 | } |
2035 | } | |
2036 | ||
c2d936a4 BP |
2037 | static void |
2038 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
2039 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 2040 | { |
c2d936a4 BP |
2041 | uint8_t ecn = ip_ecn->ecn; |
2042 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
2043 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
2044 | .ofs = 0, .n_bits = 2 }; | |
2045 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
2046 | } else if (ofp_version == OFP11_VERSION) { |
2047 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
2048 | } else { | |
128684a6 | 2049 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
2050 | } |
2051 | } | |
d01c980f | 2052 | |
cab50449 | 2053 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
2054 | parse_SET_IP_ECN(char *arg, |
2055 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2056 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
2057 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
2058 | { | |
2059 | uint8_t ecn; | |
2060 | char *error; | |
d01c980f | 2061 | |
c2d936a4 | 2062 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
2063 | if (error) { |
2064 | return error; | |
2065 | } | |
2066 | ||
c2d936a4 BP |
2067 | if (ecn & ~IP_ECN_MASK) { |
2068 | return xasprintf("%s: not a valid ECN", arg); | |
2069 | } | |
2070 | ofpact_put_SET_IP_ECN(ofpacts)->ecn = ecn; | |
2071 | return NULL; | |
d01c980f BP |
2072 | } |
2073 | ||
c2d936a4 | 2074 | static void |
50f96b10 BP |
2075 | format_SET_IP_ECN(const struct ofpact_ecn *a, |
2076 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2077 | struct ds *s) | |
c2d936a4 | 2078 | { |
b1c5bf1f QM |
2079 | ds_put_format(s, "%smod_nw_ecn:%s%d", |
2080 | colors.param, colors.end, a->ecn); | |
c2d936a4 BP |
2081 | } |
2082 | \f | |
2083 | /* Set IPv4/v6 TTL actions. */ | |
2084 | ||
d01c980f | 2085 | static enum ofperr |
f3cd3ac7 JS |
2086 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
2087 | enum ofp_version ofp_version OVS_UNUSED, | |
2088 | struct ofpbuf *out) | |
d01c980f | 2089 | { |
c2d936a4 BP |
2090 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | static void | |
2095 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
2096 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2097 | { | |
2098 | if (ofp_version >= OFP11_VERSION) { | |
2099 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
2100 | } else { | |
56a91749 BP |
2101 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
2102 | .ofs = 0, .n_bits = 8 }; | |
2103 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
2104 | } |
2105 | } | |
2106 | ||
cab50449 | 2107 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
2108 | parse_SET_IP_TTL(char *arg, |
2109 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2110 | struct ofpbuf *ofpacts, | |
2111 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 BP |
2112 | { |
2113 | uint8_t ttl; | |
2114 | char *error; | |
d01c980f | 2115 | |
c2d936a4 | 2116 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2117 | if (error) { |
2118 | return error; | |
2119 | } | |
2120 | ||
c2d936a4 BP |
2121 | ofpact_put_SET_IP_TTL(ofpacts)->ttl = ttl; |
2122 | return NULL; | |
2123 | } | |
d01c980f | 2124 | |
c2d936a4 | 2125 | static void |
50f96b10 BP |
2126 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, |
2127 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2128 | struct ds *s) | |
c2d936a4 | 2129 | { |
b1c5bf1f | 2130 | ds_put_format(s, "%smod_nw_ttl:%s%d", colors.param, colors.end, a->ttl); |
c2d936a4 BP |
2131 | } |
2132 | \f | |
2133 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2134 | |
c2d936a4 | 2135 | static enum ofperr |
f3cd3ac7 JS |
2136 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2137 | enum ofp_version ofp_version OVS_UNUSED, | |
2138 | struct ofpbuf *out) | |
c2d936a4 BP |
2139 | { |
2140 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2141 | return 0; | |
2142 | } | |
d01c980f | 2143 | |
c2d936a4 | 2144 | static enum ofperr |
f3cd3ac7 JS |
2145 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2146 | enum ofp_version ofp_version OVS_UNUSED, | |
2147 | struct ofpbuf *out) | |
c2d936a4 BP |
2148 | { |
2149 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2150 | return 0; | |
2151 | } | |
d01c980f | 2152 | |
c2d936a4 BP |
2153 | static void |
2154 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2155 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2156 | enum mf_field_id field, struct ofpbuf *out) | |
2157 | { | |
2158 | uint16_t port = l4_port->port; | |
3e34fbdd | 2159 | |
c2d936a4 | 2160 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2161 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2162 | } else { |
2163 | ofpact_put_raw(out, ofp_version, raw, port); | |
2164 | } | |
2165 | } | |
8e61c110 | 2166 | |
c2d936a4 BP |
2167 | static void |
2168 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2169 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2170 | { | |
2171 | uint8_t proto = l4_port->flow_ip_proto; | |
2172 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2173 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2174 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2175 | : MFF_N_IDS); | |
276c4e7a | 2176 | |
c2d936a4 BP |
2177 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2178 | } | |
d01c980f | 2179 | |
c2d936a4 BP |
2180 | static void |
2181 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2182 | enum ofp_version ofp_version, | |
2183 | struct ofpbuf *out) | |
2184 | { | |
2185 | uint8_t proto = l4_port->flow_ip_proto; | |
2186 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2187 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2188 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2189 | : MFF_N_IDS); | |
d01c980f | 2190 | |
c2d936a4 BP |
2191 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2192 | } | |
7bcb1506 | 2193 | |
cab50449 | 2194 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
2195 | parse_SET_L4_SRC_PORT(char *arg, |
2196 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2197 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
2198 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
2199 | { | |
2200 | return str_to_u16(arg, "source port", | |
2201 | &ofpact_put_SET_L4_SRC_PORT(ofpacts)->port); | |
2202 | } | |
d01c980f | 2203 | |
cab50449 | 2204 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
2205 | parse_SET_L4_DST_PORT(char *arg, |
2206 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2207 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
2208 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
2209 | { | |
2210 | return str_to_u16(arg, "destination port", | |
2211 | &ofpact_put_SET_L4_DST_PORT(ofpacts)->port); | |
2212 | } | |
d01c980f | 2213 | |
c2d936a4 | 2214 | static void |
50f96b10 BP |
2215 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, |
2216 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2217 | struct ds *s) | |
c2d936a4 | 2218 | { |
b1c5bf1f | 2219 | ds_put_format(s, "%smod_tp_src:%s%d", colors.param, colors.end, a->port); |
c2d936a4 | 2220 | } |
d01c980f | 2221 | |
c2d936a4 | 2222 | static void |
50f96b10 BP |
2223 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, |
2224 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2225 | struct ds *s) | |
c2d936a4 | 2226 | { |
b1c5bf1f | 2227 | ds_put_format(s, "%smod_tp_dst:%s%d", colors.param, colors.end, a->port); |
c2d936a4 BP |
2228 | } |
2229 | \f | |
73178f20 BP |
2230 | /* Action structure for OFPAT_COPY_FIELD. */ |
2231 | struct ofp15_action_copy_field { | |
2232 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2233 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2234 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2235 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2236 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2237 | uint8_t pad[2]; |
f13cdd73 BP |
2238 | /* Followed by: |
2239 | * - OXM header for source field. | |
2240 | * - OXM header for destination field. | |
2241 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2242 | * The "pad2" member is the beginning of the above. */ |
2243 | uint8_t pad2[4]; | |
73178f20 | 2244 | }; |
f13cdd73 | 2245 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2246 | |
914624f8 BP |
2247 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2248 | struct onf_action_copy_field { | |
2249 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2250 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2251 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2252 | ovs_be16 exp_type; /* 3200. */ | |
2253 | uint8_t pad[2]; /* Not used. */ | |
2254 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2255 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2256 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2257 | uint8_t pad2[2]; /* Not used. */ | |
2258 | /* Followed by: | |
2259 | * - OXM header for source field. | |
2260 | * - OXM header for destination field. | |
2261 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2262 | * The "pad3" member is the beginning of the above. */ | |
2263 | uint8_t pad3[4]; /* Not used. */ | |
2264 | }; | |
2265 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2266 | ||
c2d936a4 BP |
2267 | /* Action structure for NXAST_REG_MOVE. |
2268 | * | |
2269 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2270 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2271 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2272 | * the next most significant bit, and so on. | |
2273 | * | |
2274 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2275 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2276 | * matching; it uses the actual value of a field.) | |
2277 | * | |
2278 | * The following nxm_header values are potentially acceptable as 'src': | |
2279 | * | |
2280 | * - NXM_OF_IN_PORT | |
2281 | * - NXM_OF_ETH_DST | |
2282 | * - NXM_OF_ETH_SRC | |
2283 | * - NXM_OF_ETH_TYPE | |
2284 | * - NXM_OF_VLAN_TCI | |
2285 | * - NXM_OF_IP_TOS | |
2286 | * - NXM_OF_IP_PROTO | |
2287 | * - NXM_OF_IP_SRC | |
2288 | * - NXM_OF_IP_DST | |
2289 | * - NXM_OF_TCP_SRC | |
2290 | * - NXM_OF_TCP_DST | |
2291 | * - NXM_OF_UDP_SRC | |
2292 | * - NXM_OF_UDP_DST | |
2293 | * - NXM_OF_ICMP_TYPE | |
2294 | * - NXM_OF_ICMP_CODE | |
2295 | * - NXM_OF_ARP_OP | |
2296 | * - NXM_OF_ARP_SPA | |
2297 | * - NXM_OF_ARP_TPA | |
2298 | * - NXM_NX_TUN_ID | |
2299 | * - NXM_NX_ARP_SHA | |
2300 | * - NXM_NX_ARP_THA | |
2301 | * - NXM_NX_ICMPV6_TYPE | |
2302 | * - NXM_NX_ICMPV6_CODE | |
2303 | * - NXM_NX_ND_SLL | |
2304 | * - NXM_NX_ND_TLL | |
2305 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2306 | * - NXM_NX_PKT_MARK | |
2307 | * - NXM_NX_TUN_IPV4_SRC | |
2308 | * - NXM_NX_TUN_IPV4_DST | |
2309 | * | |
2310 | * The following nxm_header values are potentially acceptable as 'dst': | |
2311 | * | |
2312 | * - NXM_OF_ETH_DST | |
2313 | * - NXM_OF_ETH_SRC | |
2314 | * - NXM_OF_IP_TOS | |
2315 | * - NXM_OF_IP_SRC | |
2316 | * - NXM_OF_IP_DST | |
2317 | * - NXM_OF_TCP_SRC | |
2318 | * - NXM_OF_TCP_DST | |
2319 | * - NXM_OF_UDP_SRC | |
2320 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2321 | * - NXM_OF_ICMP_TYPE |
2322 | * - NXM_OF_ICMP_CODE | |
2323 | * - NXM_NX_ICMPV6_TYPE | |
2324 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2325 | * - NXM_NX_ARP_SHA |
2326 | * - NXM_NX_ARP_THA | |
2327 | * - NXM_OF_ARP_OP | |
2328 | * - NXM_OF_ARP_SPA | |
2329 | * - NXM_OF_ARP_TPA | |
2330 | * Modifying any of the above fields changes the corresponding packet | |
2331 | * header. | |
2332 | * | |
2333 | * - NXM_OF_IN_PORT | |
2334 | * | |
2335 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2336 | * | |
2337 | * - NXM_NX_PKT_MARK | |
2338 | * | |
2339 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2340 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2341 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2342 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2343 | * to the field's new value (with the CFI bit masked out). | |
2344 | * | |
2345 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2346 | * any of these values modifies the corresponding tunnel header field used | |
2347 | * for the packet's next tunnel encapsulation, if allowed by the | |
2348 | * configuration of the output tunnel port. | |
2349 | * | |
2350 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2351 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2352 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2353 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2354 | * | |
2355 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2356 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2357 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2358 | * | |
2359 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2360 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2361 | * temporary buffer copied to 'dst'. | |
2362 | */ | |
2363 | struct nx_action_reg_move { | |
2364 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2365 | ovs_be16 len; /* Length is 24. */ | |
2366 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2367 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2368 | ovs_be16 n_bits; /* Number of bits. */ | |
2369 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2370 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2371 | /* Followed by: |
2372 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2373 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2374 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2375 | }; |
bad8a439 | 2376 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2377 | |
73178f20 | 2378 | static enum ofperr |
914624f8 BP |
2379 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2380 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
04f48a68 | 2381 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2382 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
73178f20 | 2383 | { |
0a2869d5 | 2384 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2385 | enum ofperr error; |
2386 | ||
914624f8 BP |
2387 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2388 | move->src.ofs = ntohs(src_offset); | |
2389 | move->src.n_bits = ntohs(n_bits); | |
2390 | move->dst.ofs = ntohs(dst_offset); | |
2391 | move->dst.n_bits = ntohs(n_bits); | |
2392 | ||
0a2869d5 | 2393 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2394 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 | 2395 | |
5c7c16d8 YHW |
2396 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2397 | tlv_bitmap); | |
f13cdd73 BP |
2398 | if (error) { |
2399 | return error; | |
2400 | } | |
5c7c16d8 YHW |
2401 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, |
2402 | tlv_bitmap); | |
f13cdd73 BP |
2403 | if (error) { |
2404 | return error; | |
2405 | } | |
f13cdd73 | 2406 | |
6fd6ed71 | 2407 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2408 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2409 | } | |
2410 | ||
73178f20 BP |
2411 | return nxm_reg_move_check(move, NULL); |
2412 | } | |
2413 | ||
914624f8 BP |
2414 | static enum ofperr |
2415 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2416 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2417 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2418 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2419 | { |
2420 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2421 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2422 | OBJECT_OFFSETOF(oacf, pad2), vl_mff_map, |
5c7c16d8 | 2423 | tlv_bitmap, ofpacts); |
914624f8 BP |
2424 | } |
2425 | ||
2426 | static enum ofperr | |
2427 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2428 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2429 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2430 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2431 | { |
2432 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2433 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2434 | OBJECT_OFFSETOF(oacf, pad3), vl_mff_map, |
5c7c16d8 | 2435 | tlv_bitmap, ofpacts); |
914624f8 BP |
2436 | } |
2437 | ||
c2d936a4 BP |
2438 | static enum ofperr |
2439 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2440 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2441 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2442 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
c2d936a4 | 2443 | { |
0a2869d5 | 2444 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2445 | enum ofperr error; |
2446 | ||
914624f8 | 2447 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2448 | move->src.ofs = ntohs(narm->src_ofs); |
2449 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2450 | move->dst.ofs = ntohs(narm->dst_ofs); |
2451 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2452 | |
0a2869d5 | 2453 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2454 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 | 2455 | |
5c7c16d8 YHW |
2456 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2457 | tlv_bitmap); | |
bad8a439 BP |
2458 | if (error) { |
2459 | return error; | |
2460 | } | |
5c7c16d8 YHW |
2461 | |
2462 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, | |
2463 | tlv_bitmap); | |
bad8a439 BP |
2464 | if (error) { |
2465 | return error; | |
2466 | } | |
04f48a68 | 2467 | |
6fd6ed71 | 2468 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2469 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2470 | } | |
2471 | ||
c2d936a4 BP |
2472 | return nxm_reg_move_check(move, NULL); |
2473 | } | |
d01c980f | 2474 | |
c2d936a4 BP |
2475 | static void |
2476 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2477 | enum ofp_version ofp_version, struct ofpbuf *out) |
2478 | { | |
914624f8 BP |
2479 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2480 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2481 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2482 | * probe for support. Until we have that ability, we currently prefer | |
2483 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2484 | * versions. */ | |
6fd6ed71 | 2485 | size_t start_ofs = out->size; |
73178f20 | 2486 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2487 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2488 | copy->n_bits = htons(move->dst.n_bits); |
2489 | copy->src_offset = htons(move->src.ofs); | |
2490 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2491 | out->size = out->size - sizeof copy->pad2; |
04f48a68 YHW |
2492 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2493 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
914624f8 BP |
2494 | } else if (ofp_version == OFP13_VERSION |
2495 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2496 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2497 | copy->n_bits = htons(move->dst.n_bits); | |
2498 | copy->src_offset = htons(move->src.ofs); | |
2499 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2500 | out->size = out->size - sizeof copy->pad3; |
04f48a68 YHW |
2501 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2502 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
73178f20 | 2503 | } else { |
bad8a439 | 2504 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2505 | narm->n_bits = htons(move->dst.n_bits); |
2506 | narm->src_ofs = htons(move->src.ofs); | |
2507 | narm->dst_ofs = htons(move->dst.ofs); | |
04f48a68 YHW |
2508 | nx_put_mff_header(out, move->src.field, 0, false); |
2509 | nx_put_mff_header(out, move->dst.field, 0, false); | |
73178f20 | 2510 | } |
bad8a439 | 2511 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2512 | } |
e9536ecb | 2513 | |
cab50449 | 2514 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
2515 | parse_REG_MOVE(const char *arg, |
2516 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2517 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
2518 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
2519 | { | |
2520 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); | |
21b2fa61 | 2521 | return nxm_parse_reg_move(move, arg); |
c2d936a4 | 2522 | } |
0f3f3c3d | 2523 | |
c2d936a4 | 2524 | static void |
50f96b10 BP |
2525 | format_REG_MOVE(const struct ofpact_reg_move *a, |
2526 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
2527 | struct ds *s) | |
c2d936a4 BP |
2528 | { |
2529 | nxm_format_reg_move(a, s); | |
2530 | } | |
2531 | \f | |
7eb4b1f1 BP |
2532 | /* Action structure for OFPAT12_SET_FIELD. */ |
2533 | struct ofp12_action_set_field { | |
2534 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2535 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2536 | ||
2537 | /* Followed by: | |
2538 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2539 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2540 | * | |
2541 | * The "pad" member is the beginning of the above. */ | |
2542 | uint8_t pad[4]; | |
2543 | }; | |
2544 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2545 | ||
c2d936a4 BP |
2546 | /* Action structure for NXAST_REG_LOAD. |
2547 | * | |
2548 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2549 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2550 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2551 | * bit, and so on. | |
2552 | * | |
2553 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2554 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2555 | * loading them. | |
2556 | * | |
2557 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2558 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2559 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2560 | * also stored as one less than its true value: | |
2561 | * | |
2562 | * 15 6 5 0 | |
2563 | * +------------------------------+------------------+ | |
2564 | * | ofs | n_bits - 1 | | |
2565 | * +------------------------------+------------------+ | |
2566 | * | |
2567 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2568 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2569 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2570 | * OFPBAC_BAD_ARGUMENT. | |
2571 | */ | |
2572 | struct nx_action_reg_load { | |
2573 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2574 | ovs_be16 len; /* Length is 24. */ | |
2575 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2576 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2577 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2578 | ovs_be32 dst; /* Destination register. */ | |
2579 | ovs_be64 value; /* Immediate value. */ | |
2580 | }; | |
2581 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2582 | |
aad28f47 BP |
2583 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2584 | * followed by: | |
bad8a439 | 2585 | * |
aad28f47 BP |
2586 | * - An NXM/OXM header, value, and optionally a mask. |
2587 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2588 | * | |
2589 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2590 | |
c2d936a4 | 2591 | static enum ofperr |
7eb4b1f1 | 2592 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
04f48a68 | 2593 | bool may_mask, const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2594 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7fdb60a7 | 2595 | { |
0a2869d5 | 2596 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2597 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2598 | |
128684a6 JR |
2599 | union mf_value value, mask; |
2600 | const struct mf_field *field; | |
5c7c16d8 YHW |
2601 | enum ofperr error; |
2602 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, | |
2603 | may_mask ? &mask : NULL, tlv_bitmap); | |
178742f9 | 2604 | if (error) { |
178742f9 BP |
2605 | return (error == OFPERR_OFPBMC_BAD_MASK |
2606 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2607 | : error); | |
c2d936a4 | 2608 | } |
5c7c16d8 | 2609 | |
7eb4b1f1 | 2610 | if (!may_mask) { |
128684a6 | 2611 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2612 | } |
178742f9 | 2613 | |
6fd6ed71 | 2614 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2615 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2616 | } | |
7fdb60a7 | 2617 | |
178742f9 BP |
2618 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2619 | * Set-Field. */ | |
128684a6 | 2620 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2621 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2622 | } |
178742f9 | 2623 | |
c2d936a4 | 2624 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2625 | if (!field->writable) { |
178742f9 | 2626 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2627 | field->name); |
c2d936a4 BP |
2628 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2629 | } | |
c2d936a4 | 2630 | |
d3cb080e | 2631 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2632 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2633 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2634 | if (!mf_is_value_valid(field, &value) |
2635 | || (field->id == MFF_VLAN_VID | |
2636 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2637 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2638 | struct ds ds = DS_EMPTY_INITIALIZER; |
50f96b10 | 2639 | mf_format(field, &value, NULL, NULL, &ds); |
c2d936a4 | 2640 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2641 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2642 | ds_destroy(&ds); |
2643 | ||
2644 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2645 | } |
128684a6 JR |
2646 | |
2647 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2648 | return 0; |
7fdb60a7 SH |
2649 | } |
2650 | ||
7eb4b1f1 BP |
2651 | static enum ofperr |
2652 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2653 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2654 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2655 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2656 | { |
5c7c16d8 YHW |
2657 | return decode_ofpat_set_field(oasf, false, vl_mff_map, tlv_bitmap, |
2658 | ofpacts); | |
7eb4b1f1 BP |
2659 | } |
2660 | ||
2661 | static enum ofperr | |
2662 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2663 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2664 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2665 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2666 | { |
5c7c16d8 | 2667 | return decode_ofpat_set_field(oasf, true, vl_mff_map, tlv_bitmap, ofpacts); |
7eb4b1f1 BP |
2668 | } |
2669 | ||
2670 | static enum ofperr | |
2671 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2672 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2673 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2674 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7eb4b1f1 | 2675 | { |
7eb4b1f1 BP |
2676 | struct mf_subfield dst; |
2677 | enum ofperr error; | |
2678 | ||
7eb4b1f1 BP |
2679 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); |
2680 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
5c7c16d8 YHW |
2681 | error = mf_vl_mff_mf_from_nxm_header(ntohl(narl->dst), vl_mff_map, |
2682 | &dst.field, tlv_bitmap); | |
2683 | if (error) { | |
2684 | return error; | |
04f48a68 YHW |
2685 | } |
2686 | ||
7eb4b1f1 BP |
2687 | error = mf_check_dst(&dst, NULL); |
2688 | if (error) { | |
2689 | return error; | |
2690 | } | |
2691 | ||
2692 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2693 | * narl->value. */ | |
2694 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2695 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2696 | } | |
2697 | ||
128684a6 JR |
2698 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2699 | NULL); | |
7eb4b1f1 | 2700 | bitwise_put(ntohll(narl->value), |
128684a6 | 2701 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2702 | dst.n_bits); |
2703 | bitwise_put(UINT64_MAX, | |
128684a6 | 2704 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2705 | dst.n_bits); |
7eb4b1f1 BP |
2706 | return 0; |
2707 | } | |
2708 | ||
bad8a439 | 2709 | static enum ofperr |
aad28f47 | 2710 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
f3cd3ac7 | 2711 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2712 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2713 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 | 2714 | { |
aad28f47 BP |
2715 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2716 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2717 | |
128684a6 JR |
2718 | union mf_value value, mask; |
2719 | const struct mf_field *field; | |
5c7c16d8 YHW |
2720 | enum ofperr error; |
2721 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, &mask, | |
2722 | tlv_bitmap); | |
bad8a439 BP |
2723 | if (error) { |
2724 | return error; | |
2725 | } | |
5c7c16d8 | 2726 | |
6fd6ed71 | 2727 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2728 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2729 | } | |
2730 | ||
128684a6 JR |
2731 | if (!field->writable) { |
2732 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2733 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2734 | } | |
128684a6 JR |
2735 | |
2736 | /* Put value and mask. */ | |
2737 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2738 | return 0; |
2739 | } | |
2740 | ||
7fdb60a7 | 2741 | static void |
128684a6 JR |
2742 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2743 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2744 | { |
7eb4b1f1 | 2745 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2746 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2747 | size_t start_ofs = openflow->size; |
178742f9 | 2748 | union mf_value value; |
7fdb60a7 | 2749 | |
178742f9 | 2750 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2751 | |
7eb4b1f1 | 2752 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2753 | openflow->size = openflow->size - sizeof oasf->pad; |
04f48a68 | 2754 | nx_put_entry(openflow, mf_from_id(field), ofp_version, &value, NULL); |
178742f9 | 2755 | pad_ofpat(openflow, start_ofs); |
7fdb60a7 SH |
2756 | } |
2757 | ||
4b684612 BP |
2758 | static void |
2759 | put_reg_load(struct ofpbuf *openflow, | |
2760 | const struct mf_subfield *dst, uint64_t value) | |
2761 | { | |
2762 | ovs_assert(dst->n_bits <= 64); | |
2763 | ||
2764 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2765 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
04f48a68 | 2766 | narl->dst = htonl(nxm_header_from_mff(dst->field)); |
4b684612 BP |
2767 | narl->value = htonll(value); |
2768 | } | |
2769 | ||
7eb4b1f1 BP |
2770 | static bool |
2771 | next_load_segment(const struct ofpact_set_field *sf, | |
2772 | struct mf_subfield *dst, uint64_t *value) | |
2773 | { | |
fa078489 BP |
2774 | int n_bits = sf->field->n_bits; |
2775 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2776 | int start = dst->ofs + dst->n_bits; |
2777 | ||
fa078489 | 2778 | if (start < n_bits) { |
7eb4b1f1 | 2779 | dst->field = sf->field; |
128684a6 JR |
2780 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2781 | n_bits); | |
fa078489 | 2782 | if (dst->ofs < n_bits) { |
128684a6 JR |
2783 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2784 | dst->ofs + 1, | |
fa078489 | 2785 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2786 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2787 | return true; |
2788 | } | |
2789 | } | |
2790 | return false; | |
2791 | } | |
178742f9 | 2792 | |
7eb4b1f1 | 2793 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2794 | static void |
c2d936a4 | 2795 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2796 | { |
bad8a439 | 2797 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2798 | * experimenter OXM or is variable length (or if it came in as |
2799 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2800 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2801 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2802 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 2803 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 2804 | size_t start_ofs = openflow->size; |
bad8a439 | 2805 | |
aad28f47 BP |
2806 | eah = put_NXAST_REG_LOAD2(openflow); |
2807 | openflow->size = openflow->size - sizeof eah->pad; | |
04f48a68 | 2808 | nx_put_entry(openflow, sf->field, 0, sf->value, |
128684a6 | 2809 | ofpact_set_field_mask(sf)); |
bad8a439 BP |
2810 | pad_ofpat(openflow, start_ofs); |
2811 | } else { | |
2812 | struct mf_subfield dst; | |
2813 | uint64_t value; | |
7eb4b1f1 | 2814 | |
bad8a439 BP |
2815 | dst.ofs = dst.n_bits = 0; |
2816 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 2817 | put_reg_load(openflow, &dst, value); |
bad8a439 | 2818 | } |
7fdb60a7 SH |
2819 | } |
2820 | } | |
2821 | ||
7eb4b1f1 BP |
2822 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2823 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 2824 | * |
c2d936a4 BP |
2825 | * We check only meta-flow types that can appear within set field actions and |
2826 | * that have a mapping to compatible action types. These struct mf_field | |
2827 | * definitions have a defined OXM or NXM header value and specify the field as | |
2828 | * writable. */ | |
2829 | static void | |
2830 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
2831 | enum ofp_version ofp_version, | |
2832 | struct ofpbuf *out) | |
7fdb60a7 | 2833 | { |
c2d936a4 BP |
2834 | switch ((int) sf->field->id) { |
2835 | case MFF_VLAN_TCI: { | |
128684a6 | 2836 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
2837 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
2838 | uint16_t vid = vlan_tci_to_vid(tci); | |
2839 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
2840 | ||
2841 | if (ofp_version < OFP11_VERSION) { | |
2842 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
2843 | * | |
2844 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2845 | * If CFI=0, strip VLAN header, if any. | |
2846 | */ | |
2847 | if (cfi) { | |
2848 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2849 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
2850 | } else { | |
2851 | put_OFPAT10_STRIP_VLAN(out); | |
2852 | } | |
2853 | } else { | |
2854 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
2855 | * | |
2856 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2857 | * OpenFlow 1.1 set actions only apply if the packet | |
2858 | * already has VLAN tags. To be sure that is the case | |
2859 | * we have to push a VLAN header. As we do not support | |
2860 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
2861 | * header already exists. This may backfire, however, | |
2862 | * when we start supporting multiple layers of VLANs. | |
2863 | * If CFI=0, strip VLAN header, if any. | |
2864 | */ | |
2865 | if (cfi) { | |
2866 | /* Push a VLAN tag, if one was not seen at action validation | |
2867 | * time. */ | |
2868 | if (!sf->flow_has_vlan) { | |
2869 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
2870 | } | |
2871 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2872 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
2873 | } else { | |
2874 | /* If the flow did not match on vlan, we have no way of | |
2875 | * knowing if the vlan tag exists, so we must POP just to be | |
2876 | * sure. */ | |
2877 | put_OFPAT11_POP_VLAN(out); | |
2878 | } | |
2879 | } | |
2880 | break; | |
2881 | } | |
7fdb60a7 | 2882 | |
c2d936a4 | 2883 | case MFF_VLAN_VID: { |
128684a6 | 2884 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
2885 | if (ofp_version == OFP10_VERSION) { |
2886 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2887 | } else { | |
2888 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2889 | } | |
2890 | break; | |
2891 | } | |
2892 | ||
2893 | case MFF_VLAN_PCP: | |
2894 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 2895 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 2896 | } else { |
128684a6 | 2897 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
2898 | } |
2899 | break; | |
2900 | ||
2901 | case MFF_ETH_SRC: | |
128684a6 | 2902 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2903 | break; |
2904 | ||
2905 | case MFF_ETH_DST: | |
128684a6 | 2906 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2907 | break; |
2908 | ||
2909 | case MFF_IPV4_SRC: | |
128684a6 | 2910 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2911 | break; |
2912 | ||
2913 | case MFF_IPV4_DST: | |
128684a6 | 2914 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2915 | break; |
2916 | ||
2917 | case MFF_IP_DSCP: | |
128684a6 | 2918 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
2919 | break; |
2920 | ||
2921 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 2922 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
2923 | break; |
2924 | ||
1a1e1a49 EG |
2925 | case MFF_IP_ECN: { |
2926 | struct ofpact_ecn ip_ecn = { .ecn = sf->value->u8 }; | |
2927 | encode_SET_IP_ECN(&ip_ecn, ofp_version, out); | |
4b684612 | 2928 | break; |
1a1e1a49 | 2929 | } |
4b684612 | 2930 | |
c2d936a4 BP |
2931 | case MFF_TCP_SRC: |
2932 | case MFF_UDP_SRC: | |
128684a6 | 2933 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
2934 | break; |
2935 | ||
2936 | case MFF_TCP_DST: | |
2937 | case MFF_UDP_DST: | |
128684a6 | 2938 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
2939 | break; |
2940 | ||
2941 | default: | |
2942 | set_field_to_nxast(sf, out); | |
2943 | break; | |
7fdb60a7 SH |
2944 | } |
2945 | } | |
2946 | ||
7eb4b1f1 BP |
2947 | static void |
2948 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
2949 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2950 | { | |
2951 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 2952 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
2953 | |
2954 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 2955 | out->size = out->size - sizeof oasf->pad; |
04f48a68 | 2956 | nx_put_entry(out, sf->field, ofp_version, sf->value, |
128684a6 | 2957 | ofpact_set_field_mask(sf)); |
7eb4b1f1 BP |
2958 | pad_ofpat(out, start_ofs); |
2959 | } | |
2960 | ||
c2d936a4 BP |
2961 | static void |
2962 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
2963 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2964 | { | |
7eb4b1f1 | 2965 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
2966 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
2967 | * entirely). */ | |
7eb4b1f1 | 2968 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
2969 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
2970 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
2971 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
2972 | set_field_to_nxast(sf, out); |
2973 | } else if (ofp_version < OFP12_VERSION) { | |
2974 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 2975 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 2976 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
2977 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
2978 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
2979 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 2980 | } else { |
7eb4b1f1 BP |
2981 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
2982 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
2983 | * so encode it as reg_load. */ | |
2984 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
2985 | } |
2986 | } | |
2987 | ||
36b43aa6 JS |
2988 | /* Parses the input argument 'arg' into the key, value, and delimiter |
2989 | * components that are common across the reg_load and set_field action format. | |
2990 | * | |
2991 | * With an argument like "1->metadata", sets the following pointers to | |
2992 | * point within 'arg': | |
2993 | * key: "metadata" | |
2994 | * value: "1" | |
2995 | * delim: "->" | |
2996 | * | |
2997 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2998 | * error. The caller is responsible for freeing the returned string. */ | |
2999 | static char * OVS_WARN_UNUSED_RESULT | |
3000 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
3001 | { | |
3002 | char *value_end; | |
3003 | ||
3004 | *value = arg; | |
3005 | value_end = strstr(arg, "->"); | |
3006 | *key = value_end + strlen("->"); | |
3007 | if (delim) { | |
3008 | *delim = value_end; | |
3009 | } | |
3010 | ||
3011 | if (!value_end) { | |
3012 | return xasprintf("%s: missing `->'", arg); | |
3013 | } | |
3014 | if (strlen(value_end) <= strlen("->")) { | |
3015 | return xasprintf("%s: missing field name following `->'", arg); | |
3016 | } | |
3017 | ||
3018 | return NULL; | |
3019 | } | |
3020 | ||
c2d936a4 BP |
3021 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
3022 | * action to 'ofpacts'. | |
3023 | * | |
3024 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3025 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3026 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3027 | set_field_parse__(char *arg, const struct ofputil_port_map *port_map, |
3028 | struct ofpbuf *ofpacts, | |
c2d936a4 | 3029 | enum ofputil_protocol *usable_protocols) |
7fdb60a7 | 3030 | { |
c2d936a4 BP |
3031 | char *value; |
3032 | char *delim; | |
3033 | char *key; | |
3034 | const struct mf_field *mf; | |
128684a6 | 3035 | union mf_value sf_value, sf_mask; |
c2d936a4 | 3036 | char *error; |
7fdb60a7 | 3037 | |
36b43aa6 JS |
3038 | error = set_field_split_str(arg, &key, &value, &delim); |
3039 | if (error) { | |
3040 | return error; | |
c2d936a4 | 3041 | } |
e3f8f887 | 3042 | |
c2d936a4 BP |
3043 | mf = mf_from_name(key); |
3044 | if (!mf) { | |
3045 | return xasprintf("%s is not a valid OXM field name", key); | |
3046 | } | |
3047 | if (!mf->writable) { | |
3048 | return xasprintf("%s is read-only", key); | |
3049 | } | |
128684a6 | 3050 | |
c2d936a4 | 3051 | delim[0] = '\0'; |
50f96b10 | 3052 | error = mf_parse(mf, value, port_map, &sf_value, &sf_mask); |
7fdb60a7 SH |
3053 | if (error) { |
3054 | return error; | |
3055 | } | |
3056 | ||
128684a6 | 3057 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 3058 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
3059 | } |
3060 | ||
a4ce8b25 | 3061 | *usable_protocols &= mf->usable_protocols_exact; |
128684a6 JR |
3062 | |
3063 | ofpact_put_set_field(ofpacts, mf, &sf_value, &sf_mask); | |
c2d936a4 | 3064 | return NULL; |
7fdb60a7 SH |
3065 | } |
3066 | ||
c2d936a4 BP |
3067 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
3068 | * action to 'ofpacts'. | |
3069 | * | |
3070 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3071 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3072 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3073 | parse_SET_FIELD(const char *arg, const struct ofputil_port_map *port_map, |
3074 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3075 | enum ofputil_protocol *usable_protocols) |
3076 | { | |
3077 | char *copy = xstrdup(arg); | |
50f96b10 | 3078 | char *error = set_field_parse__(copy, port_map, ofpacts, usable_protocols); |
c2d936a4 BP |
3079 | free(copy); |
3080 | return error; | |
3081 | } | |
a359d5ad | 3082 | |
cab50449 | 3083 | static char * OVS_WARN_UNUSED_RESULT |
7eb4b1f1 BP |
3084 | parse_reg_load(char *arg, struct ofpbuf *ofpacts) |
3085 | { | |
7eb4b1f1 | 3086 | struct mf_subfield dst; |
36b43aa6 | 3087 | char *key, *value_str; |
81270993 | 3088 | union mf_value value; |
7eb4b1f1 BP |
3089 | char *error; |
3090 | ||
36b43aa6 JS |
3091 | error = set_field_split_str(arg, &key, &value_str, NULL); |
3092 | if (error) { | |
3093 | return error; | |
7eb4b1f1 | 3094 | } |
36b43aa6 JS |
3095 | |
3096 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
3097 | if (error) { |
3098 | return error; | |
3099 | } | |
3100 | ||
81270993 JS |
3101 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
3102 | &key)) { | |
3103 | return xasprintf("%s: cannot parse integer value", arg); | |
3104 | } | |
3105 | ||
3106 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
3107 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
3108 | struct ds ds; | |
3109 | ||
3110 | ds_init(&ds); | |
50f96b10 | 3111 | mf_format(dst.field, &value, NULL, NULL, &ds); |
81270993 JS |
3112 | error = xasprintf("%s: value %s does not fit into %d bits", |
3113 | arg, ds_cstr(&ds), dst.n_bits); | |
3114 | ds_destroy(&ds); | |
3115 | return error; | |
7eb4b1f1 BP |
3116 | } |
3117 | ||
128684a6 JR |
3118 | struct ofpact_set_field *sf = ofpact_put_reg_load(ofpacts, dst.field, NULL, |
3119 | NULL); | |
81270993 | 3120 | |
128684a6 JR |
3121 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
3122 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
3123 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
3124 | dst.n_bits); | |
7eb4b1f1 BP |
3125 | return NULL; |
3126 | } | |
3127 | ||
c2d936a4 | 3128 | static void |
50f96b10 BP |
3129 | format_SET_FIELD(const struct ofpact_set_field *a, |
3130 | const struct ofputil_port_map *port_map, | |
3131 | struct ds *s) | |
c2d936a4 | 3132 | { |
7eb4b1f1 BP |
3133 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
3134 | struct mf_subfield dst; | |
3135 | uint64_t value; | |
3136 | ||
3137 | dst.ofs = dst.n_bits = 0; | |
3138 | while (next_load_segment(a, &dst, &value)) { | |
b1c5bf1f QM |
3139 | ds_put_format(s, "%sload:%s%#"PRIx64"%s->%s", |
3140 | colors.special, colors.end, value, | |
3141 | colors.special, colors.end); | |
7eb4b1f1 BP |
3142 | mf_format_subfield(&dst, s); |
3143 | ds_put_char(s, ','); | |
3144 | } | |
3145 | ds_chomp(s, ','); | |
3146 | } else { | |
b1c5bf1f | 3147 | ds_put_format(s, "%sset_field:%s", colors.special, colors.end); |
50f96b10 | 3148 | mf_format(a->field, a->value, ofpact_set_field_mask(a), port_map, s); |
b1c5bf1f QM |
3149 | ds_put_format(s, "%s->%s%s", |
3150 | colors.special, colors.end, a->field->name); | |
7eb4b1f1 BP |
3151 | } |
3152 | } | |
3153 | ||
128684a6 JR |
3154 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
3155 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
3156 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
3157 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3158 | struct ofpact_set_field * | |
3159 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3160 | const void *value, const void *mask) | |
3161 | { | |
3162 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3163 | sf->field = field; | |
3164 | ||
3165 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3166 | * caller may fill in the value and mask itself. */ | |
3167 | if (value) { | |
3168 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3169 | sf = ofpacts->header; | |
3170 | memcpy(sf->value, value, field->n_bytes); | |
3171 | if (mask) { | |
3172 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3173 | } else { | |
3174 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3175 | } | |
3176 | } else { | |
3177 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3178 | sf = ofpacts->header; | |
3179 | } | |
3180 | /* Update length. */ | |
3181 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3182 | ||
3183 | return sf; | |
3184 | } | |
3185 | ||
7eb4b1f1 BP |
3186 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3187 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3188 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3189 | * that was the way that the action was expressed when it came into OVS or for | |
3190 | * backward compatibility. */ | |
3191 | struct ofpact_set_field * | |
128684a6 JR |
3192 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3193 | const void *value, const void *mask) | |
7eb4b1f1 | 3194 | { |
128684a6 JR |
3195 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3196 | mask); | |
7eb4b1f1 | 3197 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3198 | |
7eb4b1f1 | 3199 | return sf; |
c2d936a4 | 3200 | } |
128684a6 JR |
3201 | |
3202 | struct ofpact_set_field * | |
3203 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3204 | const void *value, const void *mask) | |
3205 | { | |
3206 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3207 | mask); | |
3208 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3209 | ||
3210 | return sf; | |
3211 | } | |
3212 | ||
c2d936a4 BP |
3213 | \f |
3214 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3215 | * | |
3216 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3217 | * top of the stack. | |
3218 | */ | |
3219 | struct nx_action_stack { | |
3220 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3221 | ovs_be16 len; /* Length is 16. */ | |
3222 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3223 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3224 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3225 | /* Followed by: |
3226 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3227 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3228 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3229 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3230 | }; |
c2d936a4 | 3231 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3232 | |
bad8a439 | 3233 | static enum ofperr |
c2d936a4 | 3234 | decode_stack_action(const struct nx_action_stack *nasp, |
5c7c16d8 | 3235 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
c2d936a4 | 3236 | struct ofpact_stack *stack_action) |
a359d5ad | 3237 | { |
5c7c16d8 | 3238 | enum ofperr error; |
c2d936a4 | 3239 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3240 | |
0a2869d5 | 3241 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3242 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
5c7c16d8 YHW |
3243 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, |
3244 | &stack_action->subfield.field, NULL, | |
3245 | tlv_bitmap); | |
bad8a439 BP |
3246 | if (error) { |
3247 | return error; | |
3248 | } | |
5c7c16d8 | 3249 | |
6fd6ed71 | 3250 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3251 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3252 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3253 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3254 | } | |
3255 | ||
3256 | return 0; | |
a359d5ad IY |
3257 | } |
3258 | ||
c2d936a4 BP |
3259 | static enum ofperr |
3260 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3261 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3262 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3263 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
a359d5ad | 3264 | { |
c2d936a4 | 3265 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
5c7c16d8 YHW |
3266 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3267 | push); | |
bad8a439 | 3268 | return error ? error : nxm_stack_push_check(push, NULL); |
a359d5ad IY |
3269 | } |
3270 | ||
c2d936a4 BP |
3271 | static enum ofperr |
3272 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3273 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3274 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3275 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
084c53de | 3276 | { |
c2d936a4 | 3277 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
5c7c16d8 YHW |
3278 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3279 | pop); | |
bad8a439 | 3280 | return error ? error : nxm_stack_pop_check(pop, NULL); |
084c53de BP |
3281 | } |
3282 | ||
c2d936a4 BP |
3283 | static void |
3284 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3285 | struct nx_action_stack *nasp) | |
c0621c39 | 3286 | { |
bad8a439 BP |
3287 | struct ofpbuf b; |
3288 | ovs_be16 n_bits; | |
3289 | ||
c2d936a4 | 3290 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3291 | |
3292 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3293 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
04f48a68 | 3294 | nx_put_mff_header(&b, stack_action->subfield.field, 0, false); |
bad8a439 BP |
3295 | n_bits = htons(stack_action->subfield.n_bits); |
3296 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3297 | } |
3298 | ||
c2d936a4 BP |
3299 | static void |
3300 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3301 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3302 | { | |
3303 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3304 | } | |
8e97815e | 3305 | |
c2d936a4 BP |
3306 | static void |
3307 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3308 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3309 | { |
c2d936a4 BP |
3310 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3311 | } | |
8e97815e | 3312 | |
cab50449 | 3313 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3314 | parse_STACK_PUSH(char *arg, |
3315 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3316 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3317 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3318 | { | |
3319 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(ofpacts), arg); | |
3320 | } | |
8e97815e | 3321 | |
cab50449 | 3322 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3323 | parse_STACK_POP(char *arg, |
3324 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3325 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3326 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3327 | { | |
3328 | return nxm_parse_stack_action(ofpact_put_STACK_POP(ofpacts), arg); | |
8e97815e BP |
3329 | } |
3330 | ||
c2d936a4 | 3331 | static void |
50f96b10 BP |
3332 | format_STACK_PUSH(const struct ofpact_stack *a, |
3333 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3334 | struct ds *s) | |
8e97815e | 3335 | { |
c2d936a4 BP |
3336 | nxm_format_stack_push(a, s); |
3337 | } | |
8e97815e | 3338 | |
c2d936a4 | 3339 | static void |
50f96b10 BP |
3340 | format_STACK_POP(const struct ofpact_stack *a, |
3341 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3342 | struct ds *s) | |
c2d936a4 BP |
3343 | { |
3344 | nxm_format_stack_pop(a, s); | |
3345 | } | |
3346 | \f | |
3347 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3348 | * | |
3349 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3350 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3351 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3352 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3353 | * | |
3354 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3355 | * sent only to controllers with id 0.) | |
3356 | */ | |
3357 | struct nx_action_cnt_ids { | |
3358 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3359 | ovs_be16 len; /* Length including slaves. */ | |
3360 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3361 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3362 | ||
3363 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3364 | uint8_t zeros[4]; /* Must be zero. */ | |
3365 | ||
3366 | /* Followed by 1 or more controller ids. | |
3367 | * | |
3368 | * uint16_t cnt_ids[]; // Controller ids. | |
3369 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3370 | */ | |
3371 | }; | |
3372 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3373 | ||
3374 | static enum ofperr | |
3375 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3376 | { | |
3377 | uint16_t id = 0; | |
3378 | struct ofpact_cnt_ids *ids; | |
3379 | enum ofperr error = 0; | |
3380 | ||
3381 | ids = ofpact_put_DEC_TTL(out); | |
3382 | ids->n_controllers = 1; | |
3383 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3384 | ids = out->header; |
ce058104 | 3385 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3386 | return error; |
3387 | } | |
3388 | ||
3389 | static enum ofperr | |
3390 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3391 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3392 | struct ofpbuf *out) |
3393 | { | |
3394 | struct ofpact_cnt_ids *ids; | |
3395 | size_t ids_size; | |
3396 | int i; | |
3397 | ||
3398 | ids = ofpact_put_DEC_TTL(out); | |
3399 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3400 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3401 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3402 | ||
3403 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3404 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3405 | } |
c2d936a4 BP |
3406 | |
3407 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3408 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3409 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
fd13c6b5 | 3410 | "are required for %u controllers.", |
c2d936a4 BP |
3411 | ids_size, ids->n_controllers * sizeof(ovs_be16), |
3412 | ids->n_controllers); | |
3413 | return OFPERR_OFPBAC_BAD_LEN; | |
3414 | } | |
3415 | ||
3416 | for (i = 0; i < ids->n_controllers; i++) { | |
3417 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3418 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3419 | ids = out->header; |
c2d936a4 BP |
3420 | } |
3421 | ||
ce058104 | 3422 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3423 | |
3424 | return 0; | |
8e97815e BP |
3425 | } |
3426 | ||
c2d936a4 BP |
3427 | static void |
3428 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3429 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3430 | { |
c2d936a4 BP |
3431 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3432 | || dec_ttl->n_controllers != 1 | |
3433 | || dec_ttl->cnt_ids[0] != 0) { | |
3434 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3435 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3436 | ovs_be16 *ids; | |
3437 | size_t i; | |
8e97815e | 3438 | |
c2d936a4 BP |
3439 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3440 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3441 | ||
3442 | ids = ofpbuf_put_zeros(out, ids_len); | |
3443 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3444 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3445 | } |
c2d936a4 BP |
3446 | } else { |
3447 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3448 | } |
8e97815e BP |
3449 | } |
3450 | ||
c2d936a4 BP |
3451 | static void |
3452 | parse_noargs_dec_ttl(struct ofpbuf *ofpacts) | |
d01c980f | 3453 | { |
c2d936a4 BP |
3454 | struct ofpact_cnt_ids *ids; |
3455 | uint16_t id = 0; | |
3456 | ||
3457 | ofpact_put_DEC_TTL(ofpacts); | |
3458 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3459 | ids = ofpacts->header; |
c2d936a4 | 3460 | ids->n_controllers++; |
ce058104 | 3461 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
d01c980f BP |
3462 | } |
3463 | ||
cab50449 | 3464 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3465 | parse_DEC_TTL(char *arg, |
3466 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3467 | struct ofpbuf *ofpacts, | |
c2d936a4 | 3468 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
d01c980f | 3469 | { |
c2d936a4 BP |
3470 | if (*arg == '\0') { |
3471 | parse_noargs_dec_ttl(ofpacts); | |
3472 | } else { | |
3473 | struct ofpact_cnt_ids *ids; | |
3474 | char *cntr; | |
3475 | ||
3476 | ids = ofpact_put_DEC_TTL(ofpacts); | |
3477 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3478 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3479 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3480 | uint16_t id = atoi(cntr); | |
3481 | ||
3482 | ofpbuf_put(ofpacts, &id, sizeof id); | |
6fd6ed71 | 3483 | ids = ofpacts->header; |
c2d936a4 BP |
3484 | ids->n_controllers++; |
3485 | } | |
3486 | if (!ids->n_controllers) { | |
3487 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3488 | "id."); | |
3489 | } | |
ce058104 | 3490 | ofpact_finish_DEC_TTL(ofpacts, &ids); |
c2d936a4 BP |
3491 | } |
3492 | return NULL; | |
d01c980f BP |
3493 | } |
3494 | ||
c2d936a4 | 3495 | static void |
50f96b10 BP |
3496 | format_DEC_TTL(const struct ofpact_cnt_ids *a, |
3497 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3498 | struct ds *s) | |
d01c980f | 3499 | { |
c2d936a4 | 3500 | size_t i; |
d01c980f | 3501 | |
b1c5bf1f | 3502 | ds_put_format(s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3503 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
b1c5bf1f | 3504 | ds_put_format(s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3505 | for (i = 0; i < a->n_controllers; i++) { |
3506 | if (i) { | |
3507 | ds_put_cstr(s, ","); | |
d01c980f | 3508 | } |
c2d936a4 BP |
3509 | ds_put_format(s, "%"PRIu16, a->cnt_ids[i]); |
3510 | } | |
b1c5bf1f | 3511 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3512 | } |
3513 | } | |
c2d936a4 BP |
3514 | \f |
3515 | /* Set MPLS label actions. */ | |
d01c980f BP |
3516 | |
3517 | static enum ofperr | |
f3cd3ac7 JS |
3518 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3519 | enum ofp_version ofp_version OVS_UNUSED, | |
3520 | struct ofpbuf *out) | |
d01c980f | 3521 | { |
c2d936a4 BP |
3522 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3523 | return 0; | |
3524 | } | |
d01c980f | 3525 | |
c2d936a4 BP |
3526 | static void |
3527 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3528 | enum ofp_version ofp_version, | |
3529 | struct ofpbuf *out) | |
3530 | { | |
3531 | if (ofp_version < OFP12_VERSION) { | |
3532 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3533 | } else { | |
128684a6 | 3534 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3535 | } |
c2d936a4 | 3536 | } |
d01c980f | 3537 | |
cab50449 | 3538 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3539 | parse_SET_MPLS_LABEL(char *arg, |
3540 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3541 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3542 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3543 | { | |
3544 | struct ofpact_mpls_label *mpls_label = ofpact_put_SET_MPLS_LABEL(ofpacts); | |
3545 | if (*arg == '\0') { | |
3546 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3547 | } |
c2d936a4 BP |
3548 | |
3549 | mpls_label->label = htonl(atoi(arg)); | |
3550 | return NULL; | |
d01c980f BP |
3551 | } |
3552 | ||
3553 | static void | |
50f96b10 BP |
3554 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, |
3555 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3556 | struct ds *s) | |
d01c980f | 3557 | { |
b1c5bf1f QM |
3558 | ds_put_format(s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
3559 | colors.paren, colors.end, ntohl(a->label), | |
3560 | colors.paren, colors.end); | |
d01c980f | 3561 | } |
c2d936a4 BP |
3562 | \f |
3563 | /* Set MPLS TC actions. */ | |
d01c980f | 3564 | |
c2d936a4 | 3565 | static enum ofperr |
f3cd3ac7 JS |
3566 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3567 | enum ofp_version ofp_version OVS_UNUSED, | |
3568 | struct ofpbuf *out) | |
d01c980f | 3569 | { |
c2d936a4 BP |
3570 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3571 | return 0; | |
3572 | } | |
d01c980f | 3573 | |
c2d936a4 BP |
3574 | static void |
3575 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3576 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3577 | { | |
3578 | if (ofp_version < OFP12_VERSION) { | |
3579 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3580 | } else { | |
128684a6 | 3581 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3582 | } |
c2d936a4 | 3583 | } |
8f2cded4 | 3584 | |
cab50449 | 3585 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3586 | parse_SET_MPLS_TC(char *arg, |
3587 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3588 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3589 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3590 | { | |
3591 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(ofpacts); | |
d01c980f | 3592 | |
c2d936a4 BP |
3593 | if (*arg == '\0') { |
3594 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3595 | } |
3596 | ||
c2d936a4 BP |
3597 | mpls_tc->tc = atoi(arg); |
3598 | return NULL; | |
3599 | } | |
d01c980f | 3600 | |
c2d936a4 | 3601 | static void |
50f96b10 BP |
3602 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, |
3603 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3604 | struct ds *s) | |
c2d936a4 | 3605 | { |
b1c5bf1f QM |
3606 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3607 | colors.paren, colors.end, a->tc, | |
3608 | colors.paren, colors.end); | |
c2d936a4 BP |
3609 | } |
3610 | \f | |
3611 | /* Set MPLS TTL actions. */ | |
d01c980f | 3612 | |
c2d936a4 | 3613 | static enum ofperr |
f3cd3ac7 JS |
3614 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3615 | enum ofp_version ofp_version OVS_UNUSED, | |
3616 | struct ofpbuf *out) | |
c2d936a4 BP |
3617 | { |
3618 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3619 | return 0; | |
3620 | } | |
638a19b0 | 3621 | |
c2d936a4 BP |
3622 | static void |
3623 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3624 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3625 | { | |
3626 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3627 | } | |
638a19b0 | 3628 | |
c2d936a4 BP |
3629 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
3630 | * action to 'ofpacts'. | |
3631 | * | |
3632 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3633 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3634 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3635 | parse_SET_MPLS_TTL(char *arg, |
3636 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3637 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3638 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3639 | { | |
3640 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(ofpacts); | |
d01c980f | 3641 | |
c2d936a4 BP |
3642 | if (*arg == '\0') { |
3643 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3644 | } |
7fdb60a7 | 3645 | |
c2d936a4 BP |
3646 | mpls_ttl->ttl = atoi(arg); |
3647 | return NULL; | |
3648 | } | |
4cceacb9 | 3649 | |
c2d936a4 | 3650 | static void |
50f96b10 BP |
3651 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, |
3652 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3653 | struct ds *s) | |
c2d936a4 | 3654 | { |
b1c5bf1f QM |
3655 | ds_put_format(s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
3656 | colors.paren, colors.end, a->ttl, | |
3657 | colors.paren, colors.end); | |
c2d936a4 BP |
3658 | } |
3659 | \f | |
3660 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3661 | |
c2d936a4 BP |
3662 | static enum ofperr |
3663 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3664 | { | |
3665 | ofpact_put_DEC_MPLS_TTL(out); | |
3666 | return 0; | |
3667 | } | |
8dd54666 | 3668 | |
c2d936a4 BP |
3669 | static void |
3670 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3671 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3672 | { | |
3673 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3674 | } | |
3675 | ||
cab50449 | 3676 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3677 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, |
3678 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3679 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3680 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3681 | { | |
3682 | ofpact_put_DEC_MPLS_TTL(ofpacts); | |
3683 | return NULL; | |
3684 | } | |
3685 | ||
3686 | static void | |
50f96b10 BP |
3687 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, |
3688 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3689 | struct ds *s) | |
c2d936a4 | 3690 | { |
b1c5bf1f | 3691 | ds_put_format(s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 BP |
3692 | } |
3693 | \f | |
3694 | /* Push MPLS label action. */ | |
3695 | ||
3696 | static enum ofperr | |
f3cd3ac7 JS |
3697 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3698 | enum ofp_version ofp_version OVS_UNUSED, | |
3699 | struct ofpbuf *out) | |
c2d936a4 BP |
3700 | { |
3701 | struct ofpact_push_mpls *oam; | |
3702 | ||
3703 | if (!eth_type_mpls(ethertype)) { | |
3704 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3705 | } |
c2d936a4 BP |
3706 | oam = ofpact_put_PUSH_MPLS(out); |
3707 | oam->ethertype = ethertype; | |
d01c980f | 3708 | |
c2d936a4 BP |
3709 | return 0; |
3710 | } | |
3711 | ||
3712 | static void | |
3713 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3714 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3715 | { | |
3716 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3717 | } | |
3718 | ||
cab50449 | 3719 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3720 | parse_PUSH_MPLS(char *arg, |
3721 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3722 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3723 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3724 | { | |
3725 | uint16_t ethertype; | |
3726 | char *error; | |
3727 | ||
3728 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3729 | if (!error) { | |
3730 | ofpact_put_PUSH_MPLS(ofpacts)->ethertype = htons(ethertype); | |
d01c980f BP |
3731 | } |
3732 | return error; | |
3733 | } | |
c2d936a4 BP |
3734 | |
3735 | static void | |
50f96b10 BP |
3736 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, |
3737 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3738 | struct ds *s) | |
c2d936a4 | 3739 | { |
b1c5bf1f QM |
3740 | ds_put_format(s, "%spush_mpls:%s0x%04"PRIx16, |
3741 | colors.param, colors.end, ntohs(a->ethertype)); | |
c2d936a4 | 3742 | } |
d01c980f | 3743 | \f |
c2d936a4 BP |
3744 | /* Pop MPLS label action. */ |
3745 | ||
3746 | static enum ofperr | |
f3cd3ac7 JS |
3747 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3748 | enum ofp_version ofp_version OVS_UNUSED, | |
3749 | struct ofpbuf *out) | |
57ad4e9e | 3750 | { |
c2d936a4 BP |
3751 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3752 | return 0; | |
3753 | } | |
57ad4e9e | 3754 | |
c2d936a4 BP |
3755 | static void |
3756 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
3757 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3758 | { | |
3759 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
3760 | } | |
3761 | ||
cab50449 | 3762 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3763 | parse_POP_MPLS(char *arg, |
3764 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3765 | struct ofpbuf *ofpacts, | |
3766 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
c2d936a4 BP |
3767 | { |
3768 | uint16_t ethertype; | |
3769 | char *error; | |
3770 | ||
3771 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
3772 | if (!error) { | |
3773 | ofpact_put_POP_MPLS(ofpacts)->ethertype = htons(ethertype); | |
57ad4e9e | 3774 | } |
c2d936a4 | 3775 | return error; |
57ad4e9e BP |
3776 | } |
3777 | ||
ba2fe8e9 | 3778 | static void |
50f96b10 BP |
3779 | format_POP_MPLS(const struct ofpact_pop_mpls *a, |
3780 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3781 | struct ds *s) | |
ba2fe8e9 | 3782 | { |
b1c5bf1f QM |
3783 | ds_put_format(s, "%spop_mpls:%s0x%04"PRIx16, |
3784 | colors.param, colors.end, ntohs(a->ethertype)); | |
ba2fe8e9 | 3785 | } |
c2d936a4 BP |
3786 | \f |
3787 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 3788 | |
f25d0cf3 | 3789 | static enum ofperr |
f3cd3ac7 JS |
3790 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
3791 | enum ofp_version ofp_version OVS_UNUSED, | |
3792 | struct ofpbuf *out) | |
f25d0cf3 | 3793 | { |
c2d936a4 BP |
3794 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
3795 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
3796 | tunnel->tun_id = tun_id; | |
3797 | return 0; | |
3798 | } | |
f25d0cf3 | 3799 | |
c2d936a4 | 3800 | static enum ofperr |
f3cd3ac7 JS |
3801 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
3802 | enum ofp_version ofp_version OVS_UNUSED, | |
3803 | struct ofpbuf *out) | |
c2d936a4 BP |
3804 | { |
3805 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
3806 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
3807 | tunnel->tun_id = tun_id; | |
3808 | return 0; | |
3809 | } | |
f25d0cf3 | 3810 | |
c2d936a4 BP |
3811 | static void |
3812 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
3813 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3814 | { | |
3815 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 3816 | |
c2d936a4 BP |
3817 | if (ofp_version < OFP12_VERSION) { |
3818 | if (tun_id <= UINT32_MAX | |
3819 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
3820 | put_NXAST_SET_TUNNEL(out, tun_id); | |
3821 | } else { | |
3822 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 3823 | } |
c2d936a4 | 3824 | } else { |
128684a6 | 3825 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
3826 | } |
3827 | } | |
f25d0cf3 | 3828 | |
cab50449 | 3829 | static char * OVS_WARN_UNUSED_RESULT |
c2d936a4 BP |
3830 | parse_set_tunnel(char *arg, struct ofpbuf *ofpacts, |
3831 | enum ofp_raw_action_type raw) | |
3832 | { | |
3833 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 3834 | |
c2d936a4 BP |
3835 | tunnel = ofpact_put_SET_TUNNEL(ofpacts); |
3836 | tunnel->ofpact.raw = raw; | |
3837 | return str_to_u64(arg, &tunnel->tun_id); | |
3838 | } | |
8621547c | 3839 | |
cab50449 | 3840 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3841 | parse_SET_TUNNEL(char *arg, |
3842 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3843 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3844 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3845 | { | |
3846 | return parse_set_tunnel(arg, ofpacts, NXAST_RAW_SET_TUNNEL); | |
3847 | } | |
8621547c | 3848 | |
c2d936a4 | 3849 | static void |
50f96b10 BP |
3850 | format_SET_TUNNEL(const struct ofpact_tunnel *a, |
3851 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3852 | struct ds *s) | |
c2d936a4 | 3853 | { |
b1c5bf1f | 3854 | ds_put_format(s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
3855 | (a->tun_id > UINT32_MAX |
3856 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 3857 | colors.end, a->tun_id); |
c2d936a4 BP |
3858 | } |
3859 | \f | |
3860 | /* Set queue action. */ | |
8621547c | 3861 | |
c2d936a4 | 3862 | static enum ofperr |
f3cd3ac7 JS |
3863 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
3864 | enum ofp_version ofp_version OVS_UNUSED, | |
3865 | struct ofpbuf *out) | |
c2d936a4 BP |
3866 | { |
3867 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
3868 | return 0; | |
3869 | } | |
8621547c | 3870 | |
c2d936a4 BP |
3871 | static void |
3872 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
3873 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3874 | { | |
3875 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
3876 | } | |
8621547c | 3877 | |
cab50449 | 3878 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3879 | parse_SET_QUEUE(char *arg, |
3880 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3881 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3882 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3883 | { | |
3884 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(ofpacts)->queue_id); | |
3885 | } | |
8621547c | 3886 | |
c2d936a4 | 3887 | static void |
50f96b10 BP |
3888 | format_SET_QUEUE(const struct ofpact_queue *a, |
3889 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3890 | struct ds *s) | |
c2d936a4 | 3891 | { |
b1c5bf1f QM |
3892 | ds_put_format(s, "%sset_queue:%s%"PRIu32, |
3893 | colors.param, colors.end, a->queue_id); | |
c2d936a4 BP |
3894 | } |
3895 | \f | |
3896 | /* Pop queue action. */ | |
1e7db674 | 3897 | |
c2d936a4 BP |
3898 | static enum ofperr |
3899 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
3900 | { | |
3901 | ofpact_put_POP_QUEUE(out); | |
3902 | return 0; | |
3903 | } | |
f25d0cf3 | 3904 | |
c2d936a4 BP |
3905 | static void |
3906 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
3907 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3908 | { | |
3909 | put_NXAST_POP_QUEUE(out); | |
3910 | } | |
f25d0cf3 | 3911 | |
cab50449 | 3912 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3913 | parse_POP_QUEUE(const char *arg OVS_UNUSED, |
3914 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3915 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3916 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3917 | { | |
3918 | ofpact_put_POP_QUEUE(ofpacts); | |
3919 | return NULL; | |
3920 | } | |
f25d0cf3 | 3921 | |
c2d936a4 | 3922 | static void |
50f96b10 BP |
3923 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, |
3924 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3925 | struct ds *s) | |
c2d936a4 | 3926 | { |
b1c5bf1f | 3927 | ds_put_format(s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 BP |
3928 | } |
3929 | \f | |
3930 | /* Action structure for NXAST_FIN_TIMEOUT. | |
3931 | * | |
3932 | * This action changes the idle timeout or hard timeout, or both, of this | |
3933 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
3934 | * When such a packet is observed, the action reduces the rule's idle timeout | |
3935 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
3936 | * action has no effect on an existing timeout that is already shorter than the | |
3937 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
3938 | * of zero has no effect on the respective timeout. | |
3939 | * | |
3940 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
3941 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
3942 | * receipt of the FIN or RST. | |
3943 | * | |
3944 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
3945 | * take a long time to expire. | |
3946 | * | |
3947 | * This action is intended for use with an OpenFlow rule that matches only a | |
3948 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
3949 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
3950 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
3951 | * early, which is not normally desirable. | |
3952 | */ | |
3953 | struct nx_action_fin_timeout { | |
3954 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3955 | ovs_be16 len; /* 16. */ | |
3956 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3957 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
3958 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
3959 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
3960 | ovs_be16 pad; /* Must be zero. */ | |
3961 | }; | |
3962 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 3963 | |
c2d936a4 BP |
3964 | static enum ofperr |
3965 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 3966 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3967 | struct ofpbuf *out) |
3968 | { | |
3969 | struct ofpact_fin_timeout *oft; | |
8621547c | 3970 | |
c2d936a4 BP |
3971 | oft = ofpact_put_FIN_TIMEOUT(out); |
3972 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
3973 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
3974 | return 0; | |
3975 | } | |
f25d0cf3 | 3976 | |
c2d936a4 BP |
3977 | static void |
3978 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
3979 | enum ofp_version ofp_version OVS_UNUSED, | |
3980 | struct ofpbuf *out) | |
3981 | { | |
3982 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
3983 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
3984 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
3985 | } | |
f25d0cf3 | 3986 | |
cab50449 | 3987 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
3988 | parse_FIN_TIMEOUT(char *arg, |
3989 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
3990 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
3991 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
3992 | { | |
3993 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(ofpacts); | |
3994 | char *key, *value; | |
f25d0cf3 | 3995 | |
c2d936a4 BP |
3996 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
3997 | char *error; | |
b02475c5 | 3998 | |
c2d936a4 BP |
3999 | if (!strcmp(key, "idle_timeout")) { |
4000 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
4001 | } else if (!strcmp(key, "hard_timeout")) { | |
4002 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
4003 | } else { | |
4004 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
4005 | key); | |
8621547c | 4006 | } |
8dd54666 | 4007 | |
c2d936a4 BP |
4008 | if (error) { |
4009 | return error; | |
9cae45dc | 4010 | } |
9cae45dc | 4011 | } |
c2d936a4 BP |
4012 | return NULL; |
4013 | } | |
e3b56933 | 4014 | |
c2d936a4 | 4015 | static void |
50f96b10 BP |
4016 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, |
4017 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
4018 | struct ds *s) | |
c2d936a4 | 4019 | { |
b1c5bf1f | 4020 | ds_put_format(s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 4021 | if (a->fin_idle_timeout) { |
b1c5bf1f QM |
4022 | ds_put_format(s, "%sidle_timeout=%s%"PRIu16",", |
4023 | colors.param, colors.end, a->fin_idle_timeout); | |
7e9f8266 | 4024 | } |
c2d936a4 | 4025 | if (a->fin_hard_timeout) { |
b1c5bf1f QM |
4026 | ds_put_format(s, "%shard_timeout=%s%"PRIu16",", |
4027 | colors.param, colors.end, a->fin_hard_timeout); | |
f25d0cf3 | 4028 | } |
c2d936a4 | 4029 | ds_chomp(s, ','); |
b1c5bf1f | 4030 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
f25d0cf3 | 4031 | } |
f839892a JS |
4032 | |
4033 | /* Action structure for NXAST_ENCAP */ | |
4034 | struct nx_action_encap { | |
4035 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4036 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4037 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4038 | ovs_be16 subtype; /* NXAST_ENCAP. */ | |
4039 | ovs_be16 hdr_size; /* Header size in bytes, 0 = 'not specified'.*/ | |
4040 | ovs_be32 new_pkt_type; /* Header type to add and PACKET_TYPE of result. */ | |
4041 | struct ofp_ed_prop_header props[]; /* Encap TLV properties. */ | |
4042 | }; | |
4043 | OFP_ASSERT(sizeof(struct nx_action_encap) == 16); | |
4044 | ||
4045 | static enum ofperr | |
4046 | decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae, | |
4047 | enum ofp_version ofp_version OVS_UNUSED, | |
4048 | struct ofpbuf *out) | |
4049 | { | |
4050 | struct ofpact_encap *encap; | |
4051 | const struct ofp_ed_prop_header *ofp_prop; | |
4052 | size_t props_len; | |
4053 | uint16_t n_props = 0; | |
4054 | int err; | |
4055 | ||
4056 | encap = ofpact_put_ENCAP(out); | |
4057 | encap->ofpact.raw = NXAST_RAW_ENCAP; | |
4058 | switch (ntohl(nae->new_pkt_type)) { | |
4059 | case PT_ETH: | |
1fc11c59 | 4060 | case PT_NSH: |
f839892a JS |
4061 | /* Add supported encap header types here. */ |
4062 | break; | |
4063 | default: | |
4064 | return OFPERR_NXBAC_BAD_HEADER_TYPE; | |
4065 | } | |
4066 | encap->new_pkt_type = nae->new_pkt_type; | |
4067 | encap->hdr_size = ntohs(nae->hdr_size); | |
4068 | ||
4069 | ofp_prop = nae->props; | |
4070 | props_len = ntohs(nae->len) - offsetof(struct nx_action_encap, props); | |
4071 | n_props = 0; | |
4072 | while (props_len > 0) { | |
4073 | err = decode_ed_prop(&ofp_prop, out, &props_len); | |
4074 | if (err) { | |
4075 | return err; | |
4076 | } | |
4077 | n_props++; | |
4078 | } | |
4079 | encap->n_props = n_props; | |
4080 | out->header = &encap->ofpact; | |
4081 | ofpact_finish_ENCAP(out, &encap); | |
4082 | ||
4083 | return 0; | |
4084 | } | |
4085 | ||
4086 | static void | |
4087 | encode_ENCAP(const struct ofpact_encap *encap, | |
4088 | enum ofp_version ofp_version OVS_UNUSED, | |
4089 | struct ofpbuf *out) | |
4090 | { | |
4091 | size_t start_ofs = out->size; | |
4092 | struct nx_action_encap *nae = put_NXAST_ENCAP(out); | |
4093 | int i; | |
4094 | ||
4095 | nae->new_pkt_type = encap->new_pkt_type; | |
4096 | nae->hdr_size = htons(encap->hdr_size); | |
4097 | const struct ofpact_ed_prop *prop = encap->props; | |
4098 | for (i = 0; i < encap->n_props; i++) { | |
4099 | encode_ed_prop(&prop, out); | |
4100 | } | |
4101 | pad_ofpat(out, start_ofs); | |
4102 | } | |
4103 | ||
4104 | static bool | |
4105 | parse_encap_header(const char *hdr, ovs_be32 *packet_type) | |
4106 | { | |
4107 | if (strcmp(hdr, "ethernet") == 0) { | |
4108 | *packet_type = htonl(PT_ETH); | |
1fc11c59 JS |
4109 | } else if (strcmp(hdr, "nsh") == 0) { |
4110 | *packet_type = htonl(PT_NSH); | |
f839892a JS |
4111 | } else { |
4112 | return false; | |
4113 | } | |
4114 | return true; | |
4115 | } | |
4116 | ||
4117 | static char * | |
4118 | parse_ed_props(const uint16_t prop_class, char **arg, int *n_props, struct ofpbuf *out) | |
4119 | { | |
4120 | char *key, *value, *err; | |
4121 | uint8_t prop_type; | |
4122 | ||
4123 | while (ofputil_parse_key_value(arg, &key, &value)) { | |
4124 | if (!parse_ed_prop_type(prop_class, key, &prop_type)) { | |
4125 | return xasprintf("Invalid property: %s", key); | |
4126 | } | |
4127 | if (value == NULL) { | |
4128 | return xasprintf("Missing the value for property: %s", key); | |
4129 | } | |
4130 | err = parse_ed_prop_value(prop_class, prop_type, value, out); | |
4131 | if (err != NULL) { | |
4132 | return err; | |
4133 | } | |
4134 | (*n_props)++; | |
4135 | } | |
4136 | return NULL; | |
4137 | } | |
4138 | ||
4139 | /* The string representation of the encap action is | |
4140 | * encap(header_type(prop=<value>,tlv(<class>,<type>,<value>),...)) | |
4141 | */ | |
4142 | ||
4143 | static char * OVS_WARN_UNUSED_RESULT | |
4144 | parse_ENCAP(char *arg, | |
4145 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
4146 | struct ofpbuf *out, | |
4147 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4148 | { | |
4149 | struct ofpact_encap *encap; | |
4150 | char *key, *value, *str; | |
4151 | char *error = NULL; | |
4152 | uint16_t prop_class; | |
4153 | int n_props = 0; | |
4154 | ||
4155 | encap = ofpact_put_ENCAP(out); | |
4156 | encap->hdr_size = 0; | |
4157 | /* Parse encap header type. */ | |
4158 | str = arg; | |
4159 | if (!ofputil_parse_key_value(&arg, &key, &value)) { | |
4160 | return xasprintf("Missing encap hdr: %s", str); | |
4161 | } | |
4162 | if (!parse_encap_header(key, &encap->new_pkt_type)) { | |
4163 | return xasprintf("Encap hdr not supported: %s", value); | |
4164 | } | |
4165 | if (!parse_ed_prop_class(key, &prop_class)) { | |
4166 | return xasprintf("Invalid encap prop class: %s", key); | |
4167 | } | |
4168 | /* Parse encap properties. */ | |
4169 | error = parse_ed_props(prop_class, &value, &n_props, out); | |
4170 | if (error != NULL) { | |
4171 | return error; | |
4172 | } | |
4173 | /* ofbuf out may have been re-allocated. */ | |
4174 | encap = out->header; | |
4175 | encap->n_props = n_props; | |
4176 | ofpact_finish_ENCAP(out, &encap); | |
4177 | return NULL; | |
4178 | } | |
4179 | ||
4180 | static char * | |
4181 | format_encap_pkt_type(const ovs_be32 pkt_type) | |
4182 | { | |
4183 | switch (ntohl(pkt_type)) { | |
4184 | case PT_ETH: | |
4185 | return "ethernet"; | |
1fc11c59 JS |
4186 | case PT_NSH: |
4187 | return "nsh"; | |
f839892a JS |
4188 | default: |
4189 | return "UNKNOWN"; | |
4190 | } | |
4191 | } | |
4192 | ||
4193 | static void | |
4194 | format_ed_props(struct ds *s, uint16_t n_props, | |
4195 | const struct ofpact_ed_prop *prop) | |
4196 | { | |
4197 | const uint8_t *p = (uint8_t *) prop; | |
4198 | int i; | |
4199 | ||
4200 | if (n_props == 0) { | |
4201 | return; | |
4202 | } | |
4203 | for (i = 0; i < n_props; i++) { | |
4204 | format_ed_prop(s, prop); | |
4205 | ds_put_char(s, ','); | |
4206 | p += ROUND_UP(prop->len, 8); | |
4207 | prop = ALIGNED_CAST(const struct ofpact_ed_prop *, p); | |
4208 | } | |
4209 | if (n_props > 0) { | |
4210 | ds_chomp(s, ','); | |
4211 | } | |
4212 | } | |
4213 | ||
4214 | static void | |
4215 | format_ENCAP(const struct ofpact_encap *a, | |
4216 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
4217 | struct ds *s) | |
4218 | { | |
4219 | ds_put_format(s, "%sencap(%s", colors.paren, colors.end); | |
4220 | ds_put_format(s, "%s", format_encap_pkt_type(a->new_pkt_type)); | |
4221 | if (a->n_props > 0) { | |
4222 | ds_put_format(s, "%s(%s", colors.paren, colors.end); | |
4223 | format_ed_props(s, a->n_props, a->props); | |
4224 | ds_put_format(s, "%s)%s", colors.paren, colors.end); | |
4225 | } | |
4226 | ds_put_format(s, "%s)%s", colors.paren, colors.end); | |
4227 | } | |
4228 | ||
4229 | /* Action structure for NXAST_DECAP */ | |
4230 | struct nx_action_decap { | |
4231 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4232 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4233 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4234 | ovs_be16 subtype; /* NXAST_DECAP. */ | |
4235 | uint8_t pad[2]; /* 2 bytes padding */ | |
4236 | ||
4237 | /* Packet type or result. | |
4238 | * | |
4239 | * The special value (0,0xFFFE) "Use next proto" | |
4240 | * is used to request OVS to automatically set the new packet type based | |
4241 | * on the decap'ed header's next protocol. | |
4242 | */ | |
4243 | ovs_be32 new_pkt_type; | |
4244 | }; | |
4245 | OFP_ASSERT(sizeof(struct nx_action_decap) == 16); | |
4246 | ||
4247 | static enum ofperr | |
4248 | decode_NXAST_RAW_DECAP(const struct nx_action_decap *nad, | |
4249 | enum ofp_version ofp_version OVS_UNUSED, | |
4250 | struct ofpbuf *ofpacts) | |
4251 | { | |
4252 | struct ofpact_decap * decap; | |
4253 | ||
4254 | if (ntohs(nad->len) > sizeof *nad) { | |
4255 | /* No properties supported yet. */ | |
4256 | return OFPERR_NXBAC_UNKNOWN_ED_PROP; | |
4257 | } | |
4258 | ||
4259 | decap = ofpact_put_DECAP(ofpacts); | |
4260 | decap->ofpact.raw = NXAST_RAW_DECAP; | |
4261 | decap->new_pkt_type = nad->new_pkt_type; | |
4262 | return 0; | |
4263 | } | |
4264 | ||
4265 | static void | |
4266 | encode_DECAP(const struct ofpact_decap *decap, | |
4267 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4268 | { | |
4269 | struct nx_action_decap *nad = put_NXAST_DECAP(out); | |
4270 | ||
4271 | nad->len = htons(sizeof(struct nx_action_decap)); | |
4272 | nad->new_pkt_type = decap->new_pkt_type; | |
4273 | } | |
4274 | ||
4275 | static char * OVS_WARN_UNUSED_RESULT | |
4276 | parse_DECAP(char *arg, | |
4277 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
4278 | struct ofpbuf *ofpacts, | |
4279 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
4280 | { | |
4281 | struct ofpact_decap *decap; | |
4282 | char *key, *value, *pos; | |
4283 | char *error = NULL; | |
4284 | uint16_t ns, type; | |
4285 | ||
4286 | decap = ofpact_put_DECAP(ofpacts); | |
4287 | /* Default next packet_type is PT_USE_NEXT_PROTO. */ | |
4288 | decap->new_pkt_type = htonl(PT_USE_NEXT_PROTO); | |
4289 | ||
4290 | /* Parse decap packet_type if given. */ | |
4291 | if (ofputil_parse_key_value(&arg, &key, &value)) { | |
4292 | if (strcmp(key, "packet_type") == 0) { | |
4293 | pos = value; | |
4294 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4295 | || strcmp(key, "ns") != 0) { | |
4296 | return xstrdup("Missing packet_type attribute ns"); | |
4297 | } | |
4298 | error = str_to_u16(value, "ns", &ns); | |
4299 | if (error) { | |
4300 | return error; | |
4301 | } | |
4302 | if (ns >= OFPHTN_N_TYPES) { | |
4303 | return xasprintf("Unsupported ns value: %"PRIu16, ns); | |
4304 | } | |
4305 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4306 | || strcmp(key, "type") != 0) { | |
4307 | return xstrdup("Missing packet_type attribute type"); | |
4308 | } | |
4309 | error = str_to_u16(value, "type", &type); | |
4310 | if (error) { | |
4311 | return error; | |
4312 | } | |
4313 | decap->new_pkt_type = htonl(PACKET_TYPE(ns, type)); | |
4314 | } else { | |
4315 | return xasprintf("Invalid decap argument: %s", key); | |
4316 | } | |
4317 | } | |
4318 | return NULL; | |
4319 | } | |
4320 | ||
4321 | static void | |
4322 | format_DECAP(const struct ofpact_decap *a, | |
4323 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
4324 | struct ds *s) | |
4325 | { | |
4326 | ds_put_format(s, "%sdecap(%s", colors.paren, colors.end); | |
4327 | if (a->new_pkt_type != htonl(PT_USE_NEXT_PROTO)) { | |
4328 | ds_put_format(s, "packet_type(ns=%"PRIu16",id=%#"PRIx16")", | |
4329 | pt_ns(a->new_pkt_type), | |
4330 | pt_ns_type(a->new_pkt_type)); | |
4331 | } | |
4332 | ds_put_format(s, "%s)%s", colors.paren, colors.end); | |
4333 | } | |
4334 | ||
c2d936a4 | 4335 | \f |
2cd20955 JR |
4336 | /* Action structures for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE, and |
4337 | * NXAST_RESUBMIT_TABLE_CT. | |
eca39bce | 4338 | * |
c2d936a4 | 4339 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 4340 | * |
2cd20955 JR |
4341 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the |
4342 | * 'table' member is not 255, then it specifies the table to search. | |
ca287d20 | 4343 | * |
2cd20955 JR |
4344 | * - Otherwise (for NXAST_RESUBMIT_TABLE or NXAST_RESUBMIT_TABLE_CT with a |
4345 | * 'table' of 255, or for NXAST_RESUBMIT regardless of 'table'), it | |
4346 | * searches the current flow table, that is, the OpenFlow flow table that | |
4347 | * contains the flow from which this action was obtained. If this action | |
4348 | * did not come from a flow table (e.g. it came from an OFPT_PACKET_OUT | |
4349 | * message), then table 0 is the current table. | |
c2d936a4 BP |
4350 | * |
4351 | * The flow table lookup uses a flow that may be slightly modified from the | |
4352 | * original lookup: | |
4353 | * | |
4354 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
4355 | * is used as the flow's in_port. | |
4356 | * | |
2cd20955 JR |
4357 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the 'in_port' |
4358 | * member is not OFPP_IN_PORT, then its value is used as the flow's | |
4359 | * in_port. Otherwise, the original in_port is used. | |
4360 | * | |
4361 | * - For NXAST_RESUBMIT_TABLE_CT the Conntrack 5-tuple fields are used as | |
4362 | * the packets IP header fields during the lookup. | |
c2d936a4 BP |
4363 | * |
4364 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
4365 | * resubmit action, then the flow is updated with the new values. | |
4366 | * | |
4367 | * Following the lookup, the original in_port is restored. | |
4368 | * | |
4369 | * If the modified flow matched in the flow table, then the corresponding | |
4370 | * actions are executed. Afterward, actions following the resubmit in the | |
4371 | * original set of actions, if any, are executed; any changes made to the | |
4372 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
4373 | * actions are executed, although the original in_port is restored. | |
4374 | * | |
4375 | * Resubmit actions may be used any number of times within a set of actions. | |
4376 | * | |
790c5d26 BP |
4377 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
4378 | * use, the implementation may limit nesting depth and the total number of | |
4379 | * resubmits: | |
4380 | * | |
4381 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
4382 | * | |
4383 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
4384 | * | |
4385 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
4386 | * | |
4387 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
4388 | * | |
4389 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
4390 | * | |
4391 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
4392 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
4393 | * did not impose any total limit). | |
c2d936a4 | 4394 | * |
2cd20955 JR |
4395 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE and |
4396 | * NXAST_RESUBMIT_TABLE_CT require 'pad' to be all-bits-zero. | |
c2d936a4 BP |
4397 | * |
4398 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
2cd20955 JR |
4399 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. Open vSwitch before |
4400 | * 2.8.0 did not support NXAST_RESUBMIT_TABLE_CT. | |
c2d936a4 BP |
4401 | */ |
4402 | struct nx_action_resubmit { | |
4403 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4404 | ovs_be16 len; /* Length is 16. */ | |
4405 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4406 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
4407 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
4408 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
4409 | uint8_t pad[3]; | |
4410 | }; | |
4411 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
4412 | ||
4413 | static enum ofperr | |
f3cd3ac7 JS |
4414 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
4415 | enum ofp_version ofp_version OVS_UNUSED, | |
4416 | struct ofpbuf *out) | |
f25d0cf3 | 4417 | { |
c2d936a4 | 4418 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 4419 | |
c2d936a4 BP |
4420 | resubmit = ofpact_put_RESUBMIT(out); |
4421 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
4422 | resubmit->in_port = u16_to_ofp(port); | |
4423 | resubmit->table_id = 0xff; | |
4424 | return 0; | |
f25d0cf3 | 4425 | } |
4cceacb9 | 4426 | |
c2d936a4 BP |
4427 | static enum ofperr |
4428 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 4429 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 4430 | struct ofpbuf *out) |
ba2fe8e9 | 4431 | { |
c2d936a4 | 4432 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 4433 | |
c2d936a4 BP |
4434 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
4435 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4436 | } | |
4437 | ||
4438 | resubmit = ofpact_put_RESUBMIT(out); | |
4439 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
4440 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
4441 | resubmit->table_id = nar->table; | |
4442 | return 0; | |
ba2fe8e9 BP |
4443 | } |
4444 | ||
2cd20955 JR |
4445 | static enum ofperr |
4446 | decode_NXAST_RAW_RESUBMIT_TABLE_CT(const struct nx_action_resubmit *nar, | |
4447 | enum ofp_version ofp_version OVS_UNUSED, | |
4448 | struct ofpbuf *out) | |
4449 | { | |
4450 | enum ofperr error = decode_NXAST_RAW_RESUBMIT_TABLE(nar, ofp_version, out); | |
4451 | if (error) { | |
4452 | return error; | |
4453 | } | |
4454 | struct ofpact_resubmit *resubmit = out->header; | |
4455 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE_CT; | |
4456 | resubmit->with_ct_orig = true; | |
4457 | return 0; | |
4458 | } | |
4459 | ||
c2d936a4 BP |
4460 | static void |
4461 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
4462 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 4463 | { |
c2d936a4 | 4464 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 4465 | |
c2d936a4 | 4466 | if (resubmit->table_id == 0xff |
2cd20955 | 4467 | && resubmit->ofpact.raw == NXAST_RAW_RESUBMIT) { |
c2d936a4 BP |
4468 | put_NXAST_RESUBMIT(out, in_port); |
4469 | } else { | |
2cd20955 JR |
4470 | struct nx_action_resubmit *nar; |
4471 | nar = resubmit->with_ct_orig | |
4472 | ? put_NXAST_RESUBMIT_TABLE_CT(out) : put_NXAST_RESUBMIT_TABLE(out); | |
c2d936a4 BP |
4473 | nar->table = resubmit->table_id; |
4474 | nar->in_port = htons(in_port); | |
4475 | } | |
4476 | } | |
6813ee7c | 4477 | |
cab50449 | 4478 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
4479 | parse_RESUBMIT(char *arg, |
4480 | const struct ofputil_port_map *port_map, | |
4481 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
4482 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
4483 | { | |
4484 | struct ofpact_resubmit *resubmit; | |
2cd20955 | 4485 | char *in_port_s, *table_s, *ct_s; |
6813ee7c | 4486 | |
c2d936a4 | 4487 | resubmit = ofpact_put_RESUBMIT(ofpacts); |
8f2cded4 | 4488 | |
c2d936a4 BP |
4489 | in_port_s = strsep(&arg, ","); |
4490 | if (in_port_s && in_port_s[0]) { | |
50f96b10 BP |
4491 | if (!ofputil_port_from_string(in_port_s, port_map, |
4492 | &resubmit->in_port)) { | |
c2d936a4 | 4493 | return xasprintf("%s: resubmit to unknown port", in_port_s); |
8f2cded4 | 4494 | } |
c2d936a4 BP |
4495 | } else { |
4496 | resubmit->in_port = OFPP_IN_PORT; | |
4497 | } | |
4cceacb9 | 4498 | |
c2d936a4 BP |
4499 | table_s = strsep(&arg, ","); |
4500 | if (table_s && table_s[0]) { | |
4501 | uint32_t table_id = 0; | |
4502 | char *error; | |
4503 | ||
4504 | error = str_to_u32(table_s, &table_id); | |
4505 | if (error) { | |
4506 | return error; | |
4507 | } | |
4508 | resubmit->table_id = table_id; | |
4509 | } else { | |
4510 | resubmit->table_id = 255; | |
4cceacb9 JS |
4511 | } |
4512 | ||
2cd20955 JR |
4513 | ct_s = strsep(&arg, ","); |
4514 | if (ct_s && ct_s[0]) { | |
4515 | if (strcmp(ct_s, "ct")) { | |
4516 | return xasprintf("%s: unknown parameter", ct_s); | |
4517 | } | |
4518 | resubmit->with_ct_orig = true; | |
4519 | } else { | |
4520 | resubmit->with_ct_orig = false; | |
4521 | } | |
4522 | ||
c2d936a4 BP |
4523 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
4524 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
4525 | "specified on resubmit"); | |
4526 | } | |
4527 | return NULL; | |
4528 | } | |
4529 | ||
4530 | static void | |
50f96b10 BP |
4531 | format_RESUBMIT(const struct ofpact_resubmit *a, |
4532 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 BP |
4533 | { |
4534 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
b1c5bf1f | 4535 | ds_put_format(s, "%sresubmit:%s", colors.special, colors.end); |
50f96b10 | 4536 | ofputil_format_port(a->in_port, port_map, s); |
c2d936a4 | 4537 | } else { |
b1c5bf1f | 4538 | ds_put_format(s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 | 4539 | if (a->in_port != OFPP_IN_PORT) { |
50f96b10 | 4540 | ofputil_format_port(a->in_port, port_map, s); |
c2d936a4 BP |
4541 | } |
4542 | ds_put_char(s, ','); | |
4543 | if (a->table_id != 255) { | |
4544 | ds_put_format(s, "%"PRIu8, a->table_id); | |
4545 | } | |
2cd20955 JR |
4546 | if (a->with_ct_orig) { |
4547 | ds_put_cstr(s, ",ct"); | |
4548 | } | |
b1c5bf1f | 4549 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
4550 | } |
4551 | } | |
4552 | \f | |
4c71600d | 4553 | /* Action structure for NXAST_LEARN and NXAST_LEARN2. |
c2d936a4 BP |
4554 | * |
4555 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
4556 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
4557 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
4558 | * flow's match criteria and actions are built by applying each of the series | |
4559 | * of flow_mod_spec elements included as part of the action. | |
4560 | * | |
4561 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
4562 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
4563 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
4564 | * bits from a source to a destination. In this case, the header contains | |
4565 | * multiple fields: | |
4566 | * | |
4567 | * 15 14 13 12 11 10 0 | |
4568 | * +------+---+------+---------------------------------+ | |
4569 | * | 0 |src| dst | n_bits | | |
4570 | * +------+---+------+---------------------------------+ | |
4571 | * | |
4572 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
4573 | * following table summarizes the meaning of each possible combination. | |
4574 | * Details follow the table: | |
4575 | * | |
4576 | * src dst meaning | |
4577 | * --- --- ---------------------------------------------------------- | |
4578 | * 0 0 Add match criteria based on value in a field. | |
4579 | * 1 0 Add match criteria based on an immediate value. | |
4580 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
4581 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
4582 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
4583 | * All other combinations are undefined and not allowed. | |
4584 | * | |
4585 | * The flow_mod_spec header is followed by a source specification and a | |
4586 | * destination specification. The format and meaning of the source | |
4587 | * specification depends on 'src': | |
4588 | * | |
4589 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
4590 | * which this action is attached. (This should be a wildcarded field. If | |
4591 | * its value is fully specified then the source bits being copied have | |
4592 | * constant values.) | |
4593 | * | |
4594 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
4595 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
4596 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
4597 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
4598 | * field in NXAST_REG_MOVE. | |
4599 | * | |
4600 | * - If 'src' is 1, the source bits are a constant value. The source | |
4601 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
4602 | * number in network order, the source bits are the 'n_bits' | |
4603 | * least-significant bits. The switch will report an error if other bits | |
4604 | * in the constant are nonzero. | |
4605 | * | |
4606 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
4607 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
4608 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
4609 | * meaning of the flow_mod_spec depends on 'dst': | |
4610 | * | |
4611 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
4612 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
4613 | * packet equal the source bits. 'field' may be any nxm_header with | |
4614 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
4615 | * | |
4616 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
4617 | * prerequisites for matching fields specified later, by copying constant | |
4618 | * values into prerequisite fields. | |
4619 | * | |
4620 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
4621 | * restrictions. | |
4622 | * | |
4623 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
4624 | * the new flow. The new flow copies the source bits into | |
4625 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
4626 | * flow_mod_specs. | |
4627 | * | |
4628 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
4629 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
4630 | * | |
4631 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
4632 | * empty. It has the following meaning: | |
4633 | * | |
4634 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
4635 | * The new flow outputs to the OpenFlow port specified by the source field. | |
4636 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
4637 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
4638 | * may not be used. | |
4639 | * | |
4640 | * Resource Management | |
4641 | * ------------------- | |
4642 | * | |
4643 | * A switch has a finite amount of flow table space available for learning. | |
4644 | * When this space is exhausted, no new learning table entries will be learned | |
4645 | * until some existing flow table entries expire. The controller should be | |
4646 | * prepared to handle this by flooding (which can be implemented as a | |
4647 | * low-priority flow). | |
4648 | * | |
4649 | * If a learned flow matches a single TCP stream with a relatively long | |
4650 | * timeout, one may make the best of resource constraints by setting | |
4651 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
4652 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
4653 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
4654 | * the learned flow. | |
4655 | * | |
4656 | * Examples | |
4657 | * -------- | |
4658 | * | |
4659 | * The following examples give a prose description of the flow_mod_specs along | |
4660 | * with informal notation for how those would be represented and a hex dump of | |
4661 | * the bytes that would be required. | |
4662 | * | |
4663 | * These examples could work with various nx_action_learn parameters. Typical | |
4664 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
4665 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
4666 | * | |
4667 | * 1. Learn input port based on the source MAC, with lookup into | |
4668 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
4669 | * | |
4670 | * Match on in_port=99: | |
4671 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
4672 | * ovs_be16(99), 00 63 | |
4673 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4674 | * | |
4675 | * Match Ethernet destination on Ethernet source from packet: | |
4676 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4677 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4678 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4679 | * | |
4680 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
4681 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
4682 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4683 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
4684 | * | |
4685 | * Given a packet that arrived on port A with Ethernet source address B, | |
4686 | * this would set up the flow "in_port=99, dl_dst=B, | |
4687 | * actions=load:A->NXM_NX_REG1[16..31]". | |
4688 | * | |
4689 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
4690 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4691 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
4692 | * | |
4693 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
4694 | * into NXM_NX_REG1[16:31]: | |
4695 | * | |
4696 | * Match on same VLAN ID as packet: | |
4697 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
4698 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4699 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4700 | * | |
4701 | * Match Ethernet destination on Ethernet source from packet: | |
4702 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4703 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4704 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4705 | * | |
4706 | * Output to the packet's input port: | |
4707 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
4708 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4709 | * | |
4710 | * Given a packet that arrived on port A with Ethernet source address B in | |
4711 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
4712 | * actions=output:A". | |
4713 | * | |
4714 | * In syntax accepted by ovs-ofctl, this action is: | |
4715 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4716 | * output:NXM_OF_IN_PORT[]) | |
4717 | * | |
4718 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
4719 | * 10-second MAC expiration time to make it easier to see what's going on | |
4720 | * | |
4721 | * ovs-vsctl del-controller br0 | |
4722 | * ovs-ofctl del-flows br0 | |
4723 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
4724 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
4725 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
4726 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
4727 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
4728 | * | |
4729 | * You can then dump the MAC learning table with: | |
4730 | * | |
4731 | * ovs-ofctl dump-flows br0 table=1 | |
4732 | * | |
4733 | * Usage Advice | |
4734 | * ------------ | |
4735 | * | |
4736 | * For best performance, segregate learned flows into a table that is not used | |
4737 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
4738 | * (a flow with no match criteria). If different learning actions specify | |
4739 | * different match criteria, use different tables for the learned flows. | |
4740 | * | |
4741 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
4742 | * These timeouts apply to the flow that is added, which means that a flow with | |
4743 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
4744 | * address. This is not usually the intent in MAC learning; instead, we want | |
4745 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
4746 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
4747 | * |
4748 | * | |
4749 | * Visibility of Changes | |
4750 | * --------------------- | |
4751 | * | |
4752 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
4753 | * flow translation are visible to flow table lookups made later in the flow | |
4754 | * translation. This means that, in the example above, a MAC learned by the | |
4755 | * learn action in table 0 would be found in table 1 (if the packet being | |
4756 | * processed had the same source and destination MAC address). | |
4757 | * | |
4758 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
4759 | * modify a flow) by a "learn" action are visible only for later flow | |
4760 | * translations, not for later lookups within the same flow translation. In | |
4761 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
4762 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
4763 | * after the processing of the learn action, meaning that if this MAC had not | |
4764 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
4765 | struct nx_action_learn { |
4766 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4767 | ovs_be16 len; /* At least 24. */ | |
4768 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4769 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
4770 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
4771 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
4772 | ovs_be16 priority; /* Priority level of flow entry. */ | |
4773 | ovs_be64 cookie; /* Cookie for new flow. */ | |
4774 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
4775 | uint8_t table_id; /* Table to insert flow entry. */ | |
4776 | uint8_t pad; /* Must be zero. */ | |
4777 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
4778 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
4779 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
4780 | * until the end of the action is reached. */ | |
4781 | }; | |
4782 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
4783 | ||
4c71600d DDP |
4784 | struct nx_action_learn2 { |
4785 | struct nx_action_learn up; /* The wire format includes nx_action_learn. */ | |
1746822c JS |
4786 | ovs_be32 limit; /* Maximum number of learned flows. |
4787 | * 0 indicates unlimited. */ | |
4c71600d DDP |
4788 | |
4789 | /* Where to store the result. */ | |
4790 | ovs_be16 result_dst_ofs; /* Starting bit offset in destination. */ | |
4791 | ||
4792 | ovs_be16 pad2; /* Must be zero. */ | |
4793 | /* Followed by: | |
4794 | * - OXM/NXM header for destination field (4 or 8 bytes), | |
4795 | * if NX_LEARN_F_WRITE_RESULT is set in 'flags' | |
4796 | * - a sequence of flow_mod_spec elements, as described above, | |
4797 | * until the end of the action is reached. */ | |
4798 | }; | |
4799 | OFP_ASSERT(sizeof(struct nx_action_learn2) == 40); | |
4800 | ||
c2d936a4 BP |
4801 | static ovs_be16 |
4802 | get_be16(const void **pp) | |
4803 | { | |
4804 | const ovs_be16 *p = *pp; | |
4805 | ovs_be16 value = *p; | |
4806 | *pp = p + 1; | |
4807 | return value; | |
4808 | } | |
4809 | ||
4810 | static ovs_be32 | |
4811 | get_be32(const void **pp) | |
4812 | { | |
4813 | const ovs_be32 *p = *pp; | |
4814 | ovs_be32 value = get_unaligned_be32(p); | |
4815 | *pp = p + 1; | |
4816 | return value; | |
4817 | } | |
4818 | ||
04f48a68 YHW |
4819 | static enum ofperr |
4820 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf, | |
5c7c16d8 | 4821 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
c2d936a4 | 4822 | { |
5c7c16d8 YHW |
4823 | enum ofperr error; |
4824 | ||
4825 | error = mf_vl_mff_mf_from_nxm_header(ntohl(get_be32(p)), vl_mff_map, | |
4826 | &sf->field, tlv_bitmap); | |
c2d936a4 BP |
4827 | sf->ofs = ntohs(get_be16(p)); |
4828 | sf->n_bits = n_bits; | |
5c7c16d8 | 4829 | return error; |
c2d936a4 BP |
4830 | } |
4831 | ||
4832 | static unsigned int | |
4833 | learn_min_len(uint16_t header) | |
4834 | { | |
4835 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
4836 | int src_type = header & NX_LEARN_SRC_MASK; | |
4837 | int dst_type = header & NX_LEARN_DST_MASK; | |
4838 | unsigned int min_len; | |
4839 | ||
4840 | min_len = 0; | |
4841 | if (src_type == NX_LEARN_SRC_FIELD) { | |
4842 | min_len += sizeof(ovs_be32); /* src_field */ | |
4843 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
4844 | } else { | |
4845 | min_len += DIV_ROUND_UP(n_bits, 16); | |
4846 | } | |
4847 | if (dst_type == NX_LEARN_DST_MATCH || | |
4848 | dst_type == NX_LEARN_DST_LOAD) { | |
4849 | min_len += sizeof(ovs_be32); /* dst_field */ | |
4850 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
4851 | } | |
4852 | return min_len; | |
4853 | } | |
4854 | ||
c2d936a4 | 4855 | static enum ofperr |
2ce5f311 | 4856 | decode_LEARN_common(const struct nx_action_learn *nal, |
a9fedc78 | 4857 | enum ofp_raw_action_type raw, |
2ce5f311 | 4858 | struct ofpact_learn *learn) |
c2d936a4 | 4859 | { |
c2d936a4 BP |
4860 | if (nal->pad) { |
4861 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4862 | } | |
4863 | ||
a9fedc78 | 4864 | learn->ofpact.raw = raw; |
c2d936a4 BP |
4865 | learn->idle_timeout = ntohs(nal->idle_timeout); |
4866 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
4867 | learn->priority = ntohs(nal->priority); | |
4868 | learn->cookie = nal->cookie; | |
4869 | learn->table_id = nal->table_id; | |
4870 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
4871 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
c2d936a4 | 4872 | learn->flags = ntohs(nal->flags); |
c2d936a4 BP |
4873 | |
4874 | if (learn->table_id == 0xff) { | |
4875 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4876 | } | |
4877 | ||
2ce5f311 DDP |
4878 | return 0; |
4879 | } | |
4880 | ||
4881 | static enum ofperr | |
4882 | decode_LEARN_specs(const void *p, const void *end, | |
4883 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, | |
4884 | struct ofpbuf *ofpacts) | |
4885 | { | |
4886 | struct ofpact_learn *learn = ofpacts->header; | |
4887 | ||
4888 | while (p != end) { | |
c2d936a4 BP |
4889 | struct ofpact_learn_spec *spec; |
4890 | uint16_t header = ntohs(get_be16(&p)); | |
4891 | ||
4892 | if (!header) { | |
4893 | break; | |
4894 | } | |
4895 | ||
4896 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 4897 | learn = ofpacts->header; |
c2d936a4 BP |
4898 | |
4899 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
4900 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
4901 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
4902 | ||
4903 | /* Check for valid src and dst type combination. */ | |
4904 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4905 | spec->dst_type == NX_LEARN_DST_LOAD || | |
4906 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
4907 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
4908 | /* OK. */ | |
4909 | } else { | |
4910 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4911 | } | |
4912 | ||
4913 | /* Check that the arguments don't overrun the end of the action. */ | |
4914 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
4915 | return OFPERR_OFPBAC_BAD_LEN; | |
4916 | } | |
4917 | ||
4918 | /* Get the source. */ | |
dfe191d5 JR |
4919 | const uint8_t *imm = NULL; |
4920 | unsigned int imm_bytes = 0; | |
04f48a68 | 4921 | enum ofperr error; |
c2d936a4 | 4922 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
5c7c16d8 YHW |
4923 | error = get_subfield(spec->n_bits, &p, &spec->src, vl_mff_map, |
4924 | tlv_bitmap); | |
04f48a68 YHW |
4925 | if (error) { |
4926 | return error; | |
4927 | } | |
c2d936a4 BP |
4928 | } else { |
4929 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 4930 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
4931 | |
4932 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
4933 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
4934 | } |
4935 | ||
4936 | /* Get the destination. */ | |
4937 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4938 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
5c7c16d8 YHW |
4939 | error = get_subfield(spec->n_bits, &p, &spec->dst, vl_mff_map, |
4940 | tlv_bitmap); | |
04f48a68 YHW |
4941 | if (error) { |
4942 | return error; | |
4943 | } | |
c2d936a4 | 4944 | } |
dfe191d5 JR |
4945 | |
4946 | if (imm) { | |
4947 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
4948 | OFPACT_ALIGN(imm_bytes)); | |
4949 | memcpy(src_imm, imm, imm_bytes); | |
4950 | ||
4951 | learn = ofpacts->header; | |
4952 | } | |
c2d936a4 | 4953 | } |
ce058104 | 4954 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
4955 | |
4956 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
4957 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4958 | } | |
4959 | ||
4960 | return 0; | |
4961 | } | |
4962 | ||
2ce5f311 DDP |
4963 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
4964 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4965 | static enum ofperr | |
4966 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
4967 | enum ofp_version ofp_version OVS_UNUSED, | |
4968 | const struct vl_mff_map *vl_mff_map, | |
4969 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
4970 | { | |
4971 | struct ofpact_learn *learn; | |
4972 | enum ofperr error; | |
4973 | ||
4974 | learn = ofpact_put_LEARN(ofpacts); | |
4975 | ||
a9fedc78 | 4976 | error = decode_LEARN_common(nal, NXAST_RAW_LEARN, learn); |
2ce5f311 DDP |
4977 | if (error) { |
4978 | return error; | |
4979 | } | |
4980 | ||
4981 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4982 | NX_LEARN_F_DELETE_LEARNED)) { | |
4983 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4984 | } | |
4985 | ||
4986 | return decode_LEARN_specs(nal + 1, (char *) nal + ntohs(nal->len), | |
4987 | vl_mff_map, tlv_bitmap, ofpacts); | |
4988 | } | |
4989 | ||
4c71600d DDP |
4990 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
4991 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4992 | static enum ofperr | |
4993 | decode_NXAST_RAW_LEARN2(const struct nx_action_learn2 *nal, | |
4994 | enum ofp_version ofp_version OVS_UNUSED, | |
4995 | const struct vl_mff_map *vl_mff_map, | |
4996 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
4997 | { | |
4998 | struct ofpbuf b = ofpbuf_const_initializer(nal, ntohs(nal->up.len)); | |
4999 | struct ofpact_learn *learn; | |
5000 | enum ofperr error; | |
5001 | ||
5002 | if (nal->pad2) { | |
5003 | return OFPERR_NXBAC_MUST_BE_ZERO; | |
5004 | } | |
5005 | ||
5006 | learn = ofpact_put_LEARN(ofpacts); | |
a9fedc78 | 5007 | error = decode_LEARN_common(&nal->up, NXAST_RAW_LEARN2, learn); |
4c71600d DDP |
5008 | if (error) { |
5009 | return error; | |
5010 | } | |
5011 | ||
5012 | learn->limit = ntohl(nal->limit); | |
5013 | ||
5014 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
5015 | NX_LEARN_F_DELETE_LEARNED | | |
5016 | NX_LEARN_F_WRITE_RESULT)) { | |
5017 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5018 | } | |
5019 | ||
5020 | ofpbuf_pull(&b, sizeof *nal); | |
5021 | ||
5022 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
5023 | error = nx_pull_header(&b, vl_mff_map, &learn->result_dst.field, NULL); | |
5024 | if (error) { | |
5025 | return error; | |
5026 | } | |
5027 | if (!learn->result_dst.field->writable) { | |
5028 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
5029 | } | |
5030 | learn->result_dst.ofs = ntohs(nal->result_dst_ofs); | |
5031 | learn->result_dst.n_bits = 1; | |
5032 | } else if (nal->result_dst_ofs) { | |
5033 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5034 | } | |
5035 | ||
5036 | return decode_LEARN_specs(b.data, (char *) nal + ntohs(nal->up.len), | |
5037 | vl_mff_map, tlv_bitmap, ofpacts); | |
5038 | } | |
5039 | ||
c2d936a4 BP |
5040 | static void |
5041 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
5042 | { | |
5043 | ofpbuf_put(b, &x, sizeof x); | |
5044 | } | |
5045 | ||
5046 | static void | |
5047 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
5048 | { | |
5049 | ofpbuf_put(b, &x, sizeof x); | |
5050 | } | |
5051 | ||
5052 | static void | |
5053 | put_u16(struct ofpbuf *b, uint16_t x) | |
5054 | { | |
5055 | put_be16(b, htons(x)); | |
5056 | } | |
5057 | ||
5058 | static void | |
5059 | put_u32(struct ofpbuf *b, uint32_t x) | |
5060 | { | |
5061 | put_be32(b, htonl(x)); | |
5062 | } | |
5063 | ||
5064 | static void | |
5065 | encode_LEARN(const struct ofpact_learn *learn, | |
5066 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5067 | { | |
5068 | const struct ofpact_learn_spec *spec; | |
5069 | struct nx_action_learn *nal; | |
5070 | size_t start_ofs; | |
5071 | ||
6fd6ed71 | 5072 | start_ofs = out->size; |
4c71600d DDP |
5073 | |
5074 | if (learn->ofpact.raw == NXAST_RAW_LEARN2 | |
5075 | || learn->limit != 0 | |
5076 | || learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
5077 | struct nx_action_learn2 *nal2; | |
5078 | ||
5079 | nal2 = put_NXAST_LEARN2(out); | |
5080 | nal2->limit = htonl(learn->limit); | |
5081 | nal2->result_dst_ofs = htons(learn->result_dst.ofs); | |
5082 | nal = &nal2->up; | |
5083 | } else { | |
5084 | nal = put_NXAST_LEARN(out); | |
5085 | } | |
c2d936a4 BP |
5086 | nal->idle_timeout = htons(learn->idle_timeout); |
5087 | nal->hard_timeout = htons(learn->hard_timeout); | |
5088 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
5089 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
5090 | nal->priority = htons(learn->priority); | |
5091 | nal->cookie = learn->cookie; | |
5092 | nal->flags = htons(learn->flags); | |
5093 | nal->table_id = learn->table_id; | |
5094 | ||
4c71600d DDP |
5095 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
5096 | nx_put_header(out, learn->result_dst.field->id, 0, false); | |
5097 | } | |
5098 | ||
c65a31e2 | 5099 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
5100 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
5101 | ||
5102 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
04f48a68 | 5103 | put_u32(out, nxm_header_from_mff(spec->src.field)); |
c2d936a4 BP |
5104 | put_u16(out, spec->src.ofs); |
5105 | } else { | |
5106 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
5107 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 5108 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 5109 | |
507a9a16 JR |
5110 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
5111 | n_bytes); | |
c2d936a4 BP |
5112 | } |
5113 | ||
5114 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5115 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
04f48a68 | 5116 | put_u32(out, nxm_header_from_mff(spec->dst.field)); |
c2d936a4 BP |
5117 | put_u16(out, spec->dst.ofs); |
5118 | } | |
5119 | } | |
5120 | ||
178742f9 | 5121 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5122 | } |
5123 | ||
cab50449 | 5124 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
5125 | parse_LEARN(char *arg, const struct ofputil_port_map *port_map, |
5126 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
5127 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5128 | { | |
50f96b10 | 5129 | return learn_parse(arg, port_map, ofpacts); |
c2d936a4 BP |
5130 | } |
5131 | ||
5132 | static void | |
50f96b10 BP |
5133 | format_LEARN(const struct ofpact_learn *a, |
5134 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 | 5135 | { |
50f96b10 | 5136 | learn_format(a, port_map, s); |
c2d936a4 BP |
5137 | } |
5138 | \f | |
18080541 BP |
5139 | /* Action structure for NXAST_CONJUNCTION. */ |
5140 | struct nx_action_conjunction { | |
5141 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5142 | ovs_be16 len; /* At least 16. */ | |
5143 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5144 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
5145 | uint8_t clause; | |
5146 | uint8_t n_clauses; | |
5147 | ovs_be32 id; | |
5148 | }; | |
5149 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
5150 | ||
5151 | static void | |
5152 | add_conjunction(struct ofpbuf *out, | |
5153 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
5154 | { | |
5155 | struct ofpact_conjunction *oc; | |
5156 | ||
5157 | oc = ofpact_put_CONJUNCTION(out); | |
5158 | oc->id = id; | |
5159 | oc->clause = clause; | |
5160 | oc->n_clauses = n_clauses; | |
5161 | } | |
5162 | ||
5163 | static enum ofperr | |
5164 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 5165 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
5166 | struct ofpbuf *out) |
5167 | { | |
5168 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
5169 | || nac->clause >= nac->n_clauses) { | |
5170 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
5171 | } else { | |
5172 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
5173 | return 0; | |
5174 | } | |
5175 | } | |
5176 | ||
5177 | static void | |
5178 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
5179 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5180 | { | |
5181 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
5182 | nac->clause = oc->clause; | |
5183 | nac->n_clauses = oc->n_clauses; | |
5184 | nac->id = htonl(oc->id); | |
5185 | } | |
5186 | ||
5187 | static void | |
50f96b10 BP |
5188 | format_CONJUNCTION(const struct ofpact_conjunction *oc, |
5189 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5190 | struct ds *s) | |
18080541 | 5191 | { |
fd13c6b5 | 5192 | ds_put_format(s, "%sconjunction(%s%"PRIu32",%d/%"PRIu8"%s)%s", |
b1c5bf1f QM |
5193 | colors.paren, colors.end, |
5194 | oc->id, oc->clause + 1, oc->n_clauses, | |
5195 | colors.paren, colors.end); | |
18080541 BP |
5196 | } |
5197 | ||
5198 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
5199 | parse_CONJUNCTION(const char *arg, |
5200 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5201 | struct ofpbuf *ofpacts, | |
18080541 BP |
5202 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5203 | { | |
5204 | uint8_t n_clauses; | |
5205 | uint8_t clause; | |
5206 | uint32_t id; | |
5207 | int n; | |
5208 | ||
5209 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
5210 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
5211 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
5212 | } | |
5213 | ||
5214 | if (n_clauses < 2) { | |
5215 | return xstrdup("conjunction must have at least 2 clauses"); | |
5216 | } else if (n_clauses > 64) { | |
5217 | return xstrdup("conjunction must have at most 64 clauses"); | |
5218 | } else if (clause < 1) { | |
5219 | return xstrdup("clause index must be positive"); | |
5220 | } else if (clause > n_clauses) { | |
5221 | return xstrdup("clause index must be less than or equal to " | |
5222 | "number of clauses"); | |
5223 | } | |
5224 | ||
5225 | add_conjunction(ofpacts, id, clause - 1, n_clauses); | |
5226 | return NULL; | |
5227 | } | |
5228 | \f | |
c2d936a4 BP |
5229 | /* Action structure for NXAST_MULTIPATH. |
5230 | * | |
5231 | * This action performs the following steps in sequence: | |
5232 | * | |
5233 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
5234 | * Refer to the definition of "enum nx_mp_fields" for details. | |
5235 | * | |
5236 | * The 'basis' value is used as a universal hash parameter, that is, | |
5237 | * different values of 'basis' yield different hash functions. The | |
5238 | * particular universal hash function used is implementation-defined. | |
5239 | * | |
5240 | * The hashed fields' values are drawn from the current state of the | |
5241 | * flow, including all modifications that have been made by actions up to | |
5242 | * this point. | |
5243 | * | |
5244 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
5245 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
5246 | * for details. | |
5247 | * | |
5248 | * The output of the algorithm is 'link', an unsigned integer less than | |
5249 | * or equal to 'max_link'. | |
5250 | * | |
5251 | * Some algorithms use 'arg' as an additional argument. | |
5252 | * | |
5253 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
5254 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
5255 | * action. | |
5256 | * | |
5257 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
5258 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
5259 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
5260 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
5261 | */ | |
5262 | struct nx_action_multipath { | |
5263 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5264 | ovs_be16 len; /* Length is 32. */ | |
5265 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5266 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
5267 | ||
5268 | /* What fields to hash and how. */ | |
5269 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
5270 | ovs_be16 basis; /* Universal hash parameter. */ | |
5271 | ovs_be16 pad0; | |
5272 | ||
5273 | /* Multipath link choice algorithm to apply to hash value. */ | |
5274 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
5275 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
5276 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
5277 | ovs_be16 pad1; | |
5278 | ||
5279 | /* Where to store the result. */ | |
5280 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
5281 | ovs_be32 dst; /* Destination. */ | |
5282 | }; | |
5283 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
5284 | ||
5285 | static enum ofperr | |
5286 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 5287 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 5288 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 5289 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 BP |
5290 | { |
5291 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
5292 | size_t min_n_bits = log_2_ceil(n_links); | |
5293 | struct ofpact_multipath *mp; | |
5c7c16d8 | 5294 | enum ofperr error; |
c2d936a4 BP |
5295 | |
5296 | mp = ofpact_put_MULTIPATH(out); | |
5297 | mp->fields = ntohs(nam->fields); | |
5298 | mp->basis = ntohs(nam->basis); | |
5299 | mp->algorithm = ntohs(nam->algorithm); | |
5300 | mp->max_link = ntohs(nam->max_link); | |
5301 | mp->arg = ntohl(nam->arg); | |
c2d936a4 BP |
5302 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); |
5303 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
5c7c16d8 YHW |
5304 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nam->dst), vl_mff_map, |
5305 | &mp->dst.field, tlv_bitmap); | |
5306 | if (error) { | |
5307 | return error; | |
04f48a68 YHW |
5308 | } |
5309 | ||
c2d936a4 BP |
5310 | if (!flow_hash_fields_valid(mp->fields)) { |
5311 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
5312 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5313 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
5314 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
5315 | && mp->algorithm != NX_MP_ALG_HRW | |
5316 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
5317 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
5318 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5319 | } else if (mp->dst.n_bits < min_n_bits) { | |
5320 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
5321 | "%"PRIu32" links", min_n_bits, n_links); | |
5322 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5323 | } | |
5324 | ||
5325 | return multipath_check(mp, NULL); | |
5326 | } | |
5327 | ||
5328 | static void | |
5329 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
5330 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5331 | { | |
5332 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
5333 | ||
5334 | nam->fields = htons(mp->fields); | |
5335 | nam->basis = htons(mp->basis); | |
5336 | nam->algorithm = htons(mp->algorithm); | |
5337 | nam->max_link = htons(mp->max_link); | |
5338 | nam->arg = htonl(mp->arg); | |
5339 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
04f48a68 | 5340 | nam->dst = htonl(nxm_header_from_mff(mp->dst.field)); |
c2d936a4 BP |
5341 | } |
5342 | ||
cab50449 | 5343 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
5344 | parse_MULTIPATH(const char *arg, |
5345 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5346 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
5347 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5348 | { | |
5349 | return multipath_parse(ofpact_put_MULTIPATH(ofpacts), arg); | |
5350 | } | |
5351 | ||
5352 | static void | |
50f96b10 BP |
5353 | format_MULTIPATH(const struct ofpact_multipath *a, |
5354 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5355 | struct ds *s) | |
c2d936a4 BP |
5356 | { |
5357 | multipath_format(a, s); | |
5358 | } | |
5359 | \f | |
5360 | /* Action structure for NXAST_NOTE. | |
5361 | * | |
5362 | * This action has no effect. It is variable length. The switch does not | |
5363 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
5364 | * can use this action to attach arbitrary metadata to a flow. | |
5365 | * | |
5366 | * This action might go away in the future. | |
5367 | */ | |
5368 | struct nx_action_note { | |
5369 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5370 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
5371 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5372 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
5373 | uint8_t note[6]; /* Start of user-defined data. */ | |
5374 | /* Possibly followed by additional user-defined data. */ | |
5375 | }; | |
5376 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
5377 | ||
5378 | static enum ofperr | |
f3cd3ac7 JS |
5379 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
5380 | enum ofp_version ofp_version OVS_UNUSED, | |
5381 | struct ofpbuf *out) | |
c2d936a4 BP |
5382 | { |
5383 | struct ofpact_note *note; | |
5384 | unsigned int length; | |
5385 | ||
5386 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 5387 | note = ofpact_put_NOTE(out); |
c2d936a4 | 5388 | note->length = length; |
2bd318de | 5389 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 5390 | note = out->header; |
ce058104 | 5391 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
5392 | |
5393 | return 0; | |
5394 | } | |
5395 | ||
5396 | static void | |
5397 | encode_NOTE(const struct ofpact_note *note, | |
5398 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5399 | { | |
6fd6ed71 | 5400 | size_t start_ofs = out->size; |
c2d936a4 | 5401 | struct nx_action_note *nan; |
c2d936a4 BP |
5402 | |
5403 | put_NXAST_NOTE(out); | |
6fd6ed71 | 5404 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
5405 | |
5406 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 5407 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5408 | } |
5409 | ||
cab50449 | 5410 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
5411 | parse_NOTE(const char *arg, |
5412 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5413 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
5414 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5415 | { | |
27aa8793 BP |
5416 | size_t start_ofs = ofpacts->size; |
5417 | ofpact_put_NOTE(ofpacts); | |
5418 | arg = ofpbuf_put_hex(ofpacts, arg, NULL); | |
5419 | if (arg[0]) { | |
5420 | return xstrdup("bad hex digit in `note' argument"); | |
5421 | } | |
5422 | struct ofpact_note *note = ofpbuf_at_assert(ofpacts, start_ofs, | |
5423 | sizeof *note); | |
5424 | note->length = ofpacts->size - (start_ofs + sizeof *note); | |
ce058104 | 5425 | ofpact_finish_NOTE(ofpacts, ¬e); |
c2d936a4 BP |
5426 | return NULL; |
5427 | } | |
5428 | ||
5429 | static void | |
50f96b10 BP |
5430 | format_NOTE(const struct ofpact_note *a, |
5431 | const struct ofputil_port_map *port_map OVS_UNUSED, struct ds *s) | |
c2d936a4 | 5432 | { |
b1c5bf1f | 5433 | ds_put_format(s, "%snote:%s", colors.param, colors.end); |
bdcad671 | 5434 | format_hex_arg(s, a->data, a->length); |
c2d936a4 BP |
5435 | } |
5436 | \f | |
5437 | /* Exit action. */ | |
5438 | ||
5439 | static enum ofperr | |
5440 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
5441 | { | |
5442 | ofpact_put_EXIT(out); | |
5443 | return 0; | |
5444 | } | |
5445 | ||
5446 | static void | |
5447 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
5448 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5449 | { | |
5450 | put_NXAST_EXIT(out); | |
5451 | } | |
5452 | ||
cab50449 | 5453 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
5454 | parse_EXIT(char *arg OVS_UNUSED, |
5455 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5456 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
5457 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5458 | { | |
5459 | ofpact_put_EXIT(ofpacts); | |
5460 | return NULL; | |
5461 | } | |
5462 | ||
5463 | static void | |
50f96b10 BP |
5464 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, |
5465 | const struct ofputil_port_map *port_map OVS_UNUSED, struct ds *s) | |
c2d936a4 | 5466 | { |
b1c5bf1f | 5467 | ds_put_format(s, "%sexit%s", colors.special, colors.end); |
c2d936a4 BP |
5468 | } |
5469 | \f | |
e672ff9b JR |
5470 | /* Unroll xlate action. */ |
5471 | ||
5472 | static void | |
5473 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
5474 | enum ofp_version ofp_version OVS_UNUSED, | |
5475 | struct ofpbuf *out OVS_UNUSED) | |
5476 | { | |
5477 | OVS_NOT_REACHED(); | |
5478 | } | |
5479 | ||
5480 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
5481 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, |
5482 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5483 | struct ofpbuf *ofpacts OVS_UNUSED, | |
e672ff9b JR |
5484 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5485 | { | |
5486 | OVS_NOT_REACHED(); | |
e672ff9b JR |
5487 | } |
5488 | ||
5489 | static void | |
50f96b10 BP |
5490 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, |
5491 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5492 | struct ds *s) | |
e672ff9b | 5493 | { |
b1c5bf1f QM |
5494 | ds_put_format(s, "%sunroll_xlate(%s%stable=%s%"PRIu8 |
5495 | ", %scookie=%s%"PRIu64"%s)%s", | |
5496 | colors.paren, colors.end, | |
5497 | colors.special, colors.end, a->rule_table_id, | |
5498 | colors.param, colors.end, ntohll(a->rule_cookie), | |
5499 | colors.paren, colors.end); | |
e672ff9b JR |
5500 | } |
5501 | \f | |
7ae62a67 WT |
5502 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
5503 | * more embedded OpenFlow actions. */ | |
5504 | ||
5505 | static enum ofperr | |
5506 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
04f48a68 YHW |
5507 | enum ofp_version ofp_version, |
5508 | const struct vl_mff_map *vl_mff_map, | |
5c7c16d8 | 5509 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7ae62a67 WT |
5510 | { |
5511 | int error; | |
5512 | struct ofpbuf openflow; | |
5513 | const size_t clone_offset = ofpacts_pull(out); | |
5514 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
5515 | ||
5516 | /* decode action list */ | |
5517 | ofpbuf_pull(out, sizeof(*clone)); | |
5518 | openflow = ofpbuf_const_initializer( | |
5519 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
5520 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
5521 | ofp_version, | |
5522 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 | 5523 | out, 0, vl_mff_map, tlv_bitmap); |
7ae62a67 WT |
5524 | clone = ofpbuf_push_uninit(out, sizeof *clone); |
5525 | out->header = &clone->ofpact; | |
5526 | ofpact_finish_CLONE(out, &clone); | |
5527 | ofpbuf_push_uninit(out, clone_offset); | |
5528 | return error; | |
5529 | } | |
5530 | ||
5531 | static void | |
5532 | encode_CLONE(const struct ofpact_nest *clone, | |
5533 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5534 | { | |
5535 | size_t len; | |
5536 | const size_t ofs = out->size; | |
5537 | struct ext_action_header *eah; | |
5538 | ||
6f9648e4 | 5539 | put_NXAST_CLONE(out); |
7ae62a67 WT |
5540 | len = ofpacts_put_openflow_actions(clone->actions, |
5541 | ofpact_nest_get_action_len(clone), | |
5542 | out, ofp_version); | |
5543 | len += sizeof *eah; | |
5544 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
5545 | eah->len = htons(len); | |
5546 | } | |
5547 | ||
5548 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
5549 | parse_CLONE(char *arg, const struct ofputil_port_map *port_map, |
5550 | struct ofpbuf *ofpacts, | |
5551 | enum ofputil_protocol *usable_protocols) | |
7ae62a67 WT |
5552 | { |
5553 | const size_t clone_offset = ofpacts_pull(ofpacts); | |
5554 | struct ofpact_nest *clone = ofpact_put_CLONE(ofpacts); | |
5555 | char *error; | |
5556 | ||
5557 | ofpbuf_pull(ofpacts, sizeof *clone); | |
50f96b10 BP |
5558 | error = ofpacts_parse_copy(arg, port_map, ofpacts, |
5559 | usable_protocols, false, 0); | |
7ae62a67 WT |
5560 | /* header points to the action list */ |
5561 | ofpacts->header = ofpbuf_push_uninit(ofpacts, sizeof *clone); | |
5562 | clone = ofpacts->header; | |
5563 | ||
5564 | ofpact_finish_CLONE(ofpacts, &clone); | |
5565 | ofpbuf_push_uninit(ofpacts, clone_offset); | |
5566 | return error; | |
5567 | } | |
5568 | ||
5569 | static void | |
50f96b10 BP |
5570 | format_CLONE(const struct ofpact_nest *a, |
5571 | const struct ofputil_port_map *port_map, struct ds *s) | |
7ae62a67 WT |
5572 | { |
5573 | ds_put_format(s, "%sclone(%s", colors.paren, colors.end); | |
50f96b10 | 5574 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), port_map, s); |
7ae62a67 WT |
5575 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
5576 | } | |
5577 | \f | |
c2d936a4 BP |
5578 | /* Action structure for NXAST_SAMPLE. |
5579 | * | |
5580 | * Samples matching packets with the given probability and sends them | |
5581 | * each to the set of collectors identified with the given ID. The | |
5582 | * probability is expressed as a number of packets to be sampled out | |
5583 | * of USHRT_MAX packets, and must be >0. | |
5584 | * | |
5585 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
5586 | * record sent for each sampled packet is associated with the given | |
5587 | * observation domain ID and observation point ID. Each IPFIX flow | |
5588 | * record contain the sampled packet's headers when executing this | |
5589 | * rule. If a sampled packet's headers are modified by previous | |
5590 | * actions in the flow, those modified headers are sent. */ | |
5591 | struct nx_action_sample { | |
5592 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5593 | ovs_be16 len; /* Length is 24. */ | |
5594 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5595 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5596 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5597 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5598 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5599 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5600 | }; | |
5601 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
5602 | ||
4930ea56 | 5603 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 5604 | * |
4930ea56 BP |
5605 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
5606 | * it adds support for exporting egress tunnel information. | |
5607 | * | |
5608 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
5609 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
5610 | struct nx_action_sample2 { |
5611 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5612 | ovs_be16 len; /* Length is 32. */ | |
5613 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5614 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5615 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5616 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5617 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5618 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5619 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
5620 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
5621 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
5622 | }; |
5623 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
5624 | ||
c2d936a4 | 5625 | static enum ofperr |
f3cd3ac7 JS |
5626 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
5627 | enum ofp_version ofp_version OVS_UNUSED, | |
5628 | struct ofpbuf *out) | |
c2d936a4 BP |
5629 | { |
5630 | struct ofpact_sample *sample; | |
5631 | ||
5632 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
5633 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
5634 | sample->probability = ntohs(nas->probability); | |
5635 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
5636 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
5637 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 5638 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 5639 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
5640 | |
5641 | if (sample->probability == 0) { | |
5642 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5643 | } | |
5644 | ||
5645 | return 0; | |
5646 | } | |
5647 | ||
5648 | static enum ofperr | |
4930ea56 BP |
5649 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
5650 | enum ofp_raw_action_type raw, | |
5651 | enum nx_action_sample_direction direction, | |
5652 | struct ofpact_sample *sample) | |
f69f713b | 5653 | { |
4930ea56 | 5654 | sample->ofpact.raw = raw; |
c2d936a4 BP |
5655 | sample->probability = ntohs(nas->probability); |
5656 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
5657 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
5658 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 5659 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 5660 | sample->direction = direction; |
c2d936a4 BP |
5661 | |
5662 | if (sample->probability == 0) { | |
5663 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5664 | } | |
5665 | ||
5666 | return 0; | |
5667 | } | |
5668 | ||
4930ea56 BP |
5669 | static enum ofperr |
5670 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
5671 | enum ofp_version ofp_version OVS_UNUSED, | |
5672 | struct ofpbuf *out) | |
5673 | { | |
5674 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
5675 | ofpact_put_SAMPLE(out)); | |
5676 | } | |
5677 | ||
5678 | static enum ofperr | |
5679 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
5680 | enum ofp_version ofp_version OVS_UNUSED, | |
5681 | struct ofpbuf *out) | |
5682 | { | |
5683 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
5684 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
5685 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5686 | } | |
5687 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
5688 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
5689 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
5690 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
5691 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5692 | } | |
5693 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
5694 | } | |
5695 | ||
5696 | static void | |
5697 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
5698 | struct nx_action_sample2 *nas) | |
5699 | { | |
5700 | nas->probability = htons(sample->probability); | |
5701 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5702 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5703 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5704 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
5705 | nas->direction = sample->direction; | |
5706 | } | |
5707 | ||
c2d936a4 BP |
5708 | static void |
5709 | encode_SAMPLE(const struct ofpact_sample *sample, | |
5710 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5711 | { | |
4930ea56 BP |
5712 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
5713 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
5714 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
5715 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
5716 | || sample->sampling_port != OFPP_NONE) { | |
5717 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
5718 | } else { |
5719 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
5720 | nas->probability = htons(sample->probability); | |
5721 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5722 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5723 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5724 | } | |
c2d936a4 BP |
5725 | } |
5726 | ||
5727 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
5728 | * action to 'ofpacts'. | |
5729 | * | |
5730 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5731 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 5732 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
5733 | parse_SAMPLE(char *arg, const struct ofputil_port_map *port_map, |
5734 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
5735 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5736 | { | |
5737 | struct ofpact_sample *os = ofpact_put_SAMPLE(ofpacts); | |
f69f713b | 5738 | os->sampling_port = OFPP_NONE; |
4930ea56 | 5739 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 5740 | |
f69f713b | 5741 | char *key, *value; |
c2d936a4 BP |
5742 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
5743 | char *error = NULL; | |
5744 | ||
5745 | if (!strcmp(key, "probability")) { | |
5746 | error = str_to_u16(value, "probability", &os->probability); | |
5747 | if (!error && os->probability == 0) { | |
5748 | error = xasprintf("invalid probability value \"%s\"", value); | |
5749 | } | |
5750 | } else if (!strcmp(key, "collector_set_id")) { | |
5751 | error = str_to_u32(value, &os->collector_set_id); | |
5752 | } else if (!strcmp(key, "obs_domain_id")) { | |
5753 | error = str_to_u32(value, &os->obs_domain_id); | |
5754 | } else if (!strcmp(key, "obs_point_id")) { | |
5755 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b | 5756 | } else if (!strcmp(key, "sampling_port")) { |
50f96b10 BP |
5757 | if (!ofputil_port_from_string(value, port_map, |
5758 | &os->sampling_port)) { | |
f69f713b BY |
5759 | error = xasprintf("%s: unknown port", value); |
5760 | } | |
4930ea56 BP |
5761 | } else if (!strcmp(key, "ingress")) { |
5762 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
5763 | } else if (!strcmp(key, "egress")) { | |
5764 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
5765 | } else { |
5766 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
5767 | key); | |
5768 | } | |
5769 | if (error) { | |
5770 | return error; | |
5771 | } | |
5772 | } | |
5773 | if (os->probability == 0) { | |
5774 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
5775 | } | |
f69f713b | 5776 | |
c2d936a4 BP |
5777 | return NULL; |
5778 | } | |
5779 | ||
5780 | static void | |
50f96b10 BP |
5781 | format_SAMPLE(const struct ofpact_sample *a, |
5782 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 | 5783 | { |
b1c5bf1f QM |
5784 | ds_put_format(s, "%ssample(%s%sprobability=%s%"PRIu16 |
5785 | ",%scollector_set_id=%s%"PRIu32 | |
5786 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 5787 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
5788 | colors.paren, colors.end, |
5789 | colors.param, colors.end, a->probability, | |
5790 | colors.param, colors.end, a->collector_set_id, | |
5791 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
5792 | colors.param, colors.end, a->obs_point_id); |
5793 | if (a->sampling_port != OFPP_NONE) { | |
50f96b10 BP |
5794 | ds_put_format(s, ",%ssampling_port=%s", colors.param, colors.end); |
5795 | ofputil_format_port(a->sampling_port, port_map, s); | |
f69f713b | 5796 | } |
4930ea56 BP |
5797 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
5798 | ds_put_format(s, ",%singress%s", colors.param, colors.end); | |
5799 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { | |
5800 | ds_put_format(s, ",%segress%s", colors.param, colors.end); | |
5801 | } | |
f69f713b | 5802 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
5803 | } |
5804 | \f | |
d4abaff5 BP |
5805 | /* debug_recirc instruction. */ |
5806 | ||
5807 | static bool enable_debug; | |
5808 | ||
5809 | void | |
5810 | ofpact_dummy_enable(void) | |
5811 | { | |
5812 | enable_debug = true; | |
5813 | } | |
5814 | ||
5815 | static enum ofperr | |
5816 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
5817 | { | |
5818 | if (!enable_debug) { | |
5819 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5820 | } | |
5821 | ||
5822 | ofpact_put_DEBUG_RECIRC(out); | |
5823 | return 0; | |
5824 | } | |
5825 | ||
5826 | static void | |
5827 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
5828 | enum ofp_version ofp_version OVS_UNUSED, | |
5829 | struct ofpbuf *out) | |
5830 | { | |
5831 | put_NXAST_DEBUG_RECIRC(out); | |
5832 | } | |
5833 | ||
5834 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
5835 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, |
5836 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5837 | struct ofpbuf *ofpacts, | |
d4abaff5 BP |
5838 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
5839 | { | |
5840 | ofpact_put_DEBUG_RECIRC(ofpacts); | |
5841 | return NULL; | |
5842 | } | |
5843 | ||
5844 | static void | |
50f96b10 BP |
5845 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, |
5846 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
5847 | struct ds *s) | |
d4abaff5 | 5848 | { |
b1c5bf1f | 5849 | ds_put_format(s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 5850 | } |
07659514 JS |
5851 | |
5852 | /* Action structure for NXAST_CT. | |
5853 | * | |
5854 | * Pass traffic to the connection tracker. | |
5855 | * | |
5856 | * There are two important concepts to understanding the connection tracking | |
5857 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
5858 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
5859 | * | |
5860 | * - Packet State: | |
5861 | * | |
f6fabcc6 JP |
5862 | * Untracked packets have an unknown connection state. In most |
5863 | * cases, packets entering the OpenFlow pipeline will initially be | |
5864 | * in the untracked state. Untracked packets may become tracked by | |
5865 | * executing NXAST_CT with a "recirc_table" specified. This makes | |
5866 | * various aspects about the connection available, in particular | |
5867 | * the connection state. | |
5868 | * | |
5869 | * An NXAST_CT action always puts the packet into an untracked | |
5870 | * state for the current processing path. If "recirc_table" is | |
5871 | * set, execution is forked and the packet passes through the | |
5872 | * connection tracker. The specified table's processing path is | |
5873 | * able to match on Connection state until the end of the OpenFlow | |
5874 | * pipeline or NXAST_CT is called again. | |
07659514 JS |
5875 | * |
5876 | * - Connection State: | |
5877 | * | |
5878 | * Multiple packets may be associated with a single connection. Initially, | |
5879 | * all connections are uncommitted. The connection state corresponding to | |
5880 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
5881 | * | |
5882 | * Uncommitted connections have no state stored about them. Uncommitted | |
5883 | * connections may transition into the committed state by executing | |
5884 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
5885 | * | |
5886 | * Once a connection becomes committed, information may be gathered about | |
5887 | * the connection by passing subsequent packets through the connection | |
5888 | * tracker, and the state of the connection will be stored beyond the | |
5889 | * lifetime of packet processing. | |
5890 | * | |
a76a37ef JR |
5891 | * A committed connection always has the directionality of the packet that |
5892 | * caused the connection to be committed in the first place. This is the | |
5893 | * "original direction" of the connection, and the opposite direction is | |
5894 | * the "reply direction". If a connection is already committed, but it is | |
5895 | * then decided that the original direction should be the opposite of the | |
5896 | * existing connection, NX_CT_F_FORCE flag may be used in addition to | |
5897 | * NX_CT_F_COMMIT flag to in effect terminate the existing connection and | |
5898 | * start a new one in the current direction. | |
5899 | * | |
07659514 JS |
5900 | * Connections may transition back into the uncommitted state due to |
5901 | * external timers, or due to the contents of packets that are sent to the | |
5902 | * connection tracker. This behaviour is outside of the scope of the | |
5903 | * OpenFlow interface. | |
5904 | * | |
5905 | * The "zone" specifies a context within which the tracking is done: | |
5906 | * | |
5907 | * The connection tracking zone is a 16-bit number. Each zone is an | |
5908 | * independent connection tracking context. The connection state for each | |
5909 | * connection is completely separate for each zone, so if a connection | |
5910 | * is committed to zone A, then it will remain uncommitted in zone B. | |
5911 | * If NXAST_CT is executed with the same zone multiple times, later | |
5912 | * executions have no effect. | |
5913 | * | |
5914 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
5915 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
5916 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
5917 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
5918 | * are the same as the acceptable nxm_header values for the 'src' field of | |
5919 | * NXAST_REG_MOVE. | |
5920 | * | |
5921 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
5922 | * connection tracking zone. | |
5923 | * | |
5924 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
5925 | * | |
5926 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
5927 | * packet will be logically cloned prior to executing this action. One | |
5928 | * copy will be sent to the connection tracker, then will be re-injected | |
5929 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
5930 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
5931 | * fields will be populated. The original instance of the packet will | |
5932 | * continue the current actions list. This can be thought of as similar to | |
5933 | * the effect of the "output" action: One copy is sent out (in this case, | |
5934 | * to the connection tracker), but the current copy continues processing. | |
5935 | * | |
5936 | * It is strongly recommended that this table is later than the current | |
5937 | * table, to prevent loops. | |
8e53fe8c | 5938 | * |
d787ad39 JS |
5939 | * The "alg" attaches protocol-specific behaviour to this action: |
5940 | * | |
5941 | * The ALG is a 16-bit number which specifies that additional | |
5942 | * processing should be applied to this traffic. | |
5943 | * | |
5944 | * Protocol | Value | Meaning | |
5945 | * -------------------------------------------------------------------- | |
5946 | * None | 0 | No protocol-specific behaviour. | |
5947 | * FTP | 21 | Parse FTP control connections and observe the | |
5948 | * | | negotiation of related data connections. | |
5949 | * Other | Other | Unsupported protocols. | |
5950 | * | |
5951 | * By way of example, if FTP control connections have this action applied | |
5952 | * with the ALG set to FTP (21), then the connection tracker will observe | |
5953 | * the negotiation of data connections. This allows the connection | |
5954 | * tracker to identify subsequent data connections as "related" to this | |
5955 | * existing connection. The "related" flag will be populated in the | |
5956 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
5957 | * specified. | |
5958 | * | |
8e53fe8c JS |
5959 | * Zero or more actions may immediately follow this action. These actions will |
5960 | * be executed within the context of the connection tracker, and they require | |
a76a37ef | 5961 | * NX_CT_F_COMMIT flag be set. |
07659514 JS |
5962 | */ |
5963 | struct nx_action_conntrack { | |
5964 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5965 | ovs_be16 len; /* At least 24. */ | |
5966 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5967 | ovs_be16 subtype; /* NXAST_CT. */ | |
5968 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
5969 | * Unspecified flag bits must be zero. */ | |
5970 | ovs_be32 zone_src; /* Connection tracking context. */ | |
5971 | union { | |
5972 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
5973 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
5974 | }; | |
5975 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
5976 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
5977 | uint8_t pad[3]; /* Zeroes */ |
5978 | ovs_be16 alg; /* Well-known port number for the protocol. | |
5979 | * 0 indicates no ALG is required. */ | |
07659514 JS |
5980 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
5981 | * these is included in 'len'. */ | |
5982 | }; | |
5983 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
5984 | ||
5985 | static enum ofperr | |
5986 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
04f48a68 | 5987 | struct ofpact_conntrack *out, |
5c7c16d8 | 5988 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
07659514 JS |
5989 | { |
5990 | if (nac->zone_src) { | |
5991 | enum ofperr error; | |
5992 | ||
07659514 JS |
5993 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); |
5994 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5c7c16d8 YHW |
5995 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nac->zone_src), |
5996 | vl_mff_map, &out->zone_src.field, | |
5997 | tlv_bitmap); | |
5998 | if (error) { | |
5999 | return error; | |
04f48a68 YHW |
6000 | } |
6001 | ||
07659514 JS |
6002 | error = mf_check_src(&out->zone_src, NULL); |
6003 | if (error) { | |
6004 | return error; | |
6005 | } | |
6006 | ||
6007 | if (out->zone_src.n_bits != 16) { | |
6008 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
6009 | out->zone_src.n_bits); | |
6010 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
6011 | } | |
6012 | } else { | |
6013 | out->zone_src.field = NULL; | |
6014 | out->zone_imm = ntohs(nac->zone_imm); | |
6015 | } | |
6016 | ||
6017 | return 0; | |
6018 | } | |
6019 | ||
6020 | static enum ofperr | |
6021 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
04f48a68 | 6022 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
6023 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
6024 | struct ofpbuf *out) | |
07659514 | 6025 | { |
8e53fe8c | 6026 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 6027 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
a76a37ef JR |
6028 | int error; |
6029 | ||
07659514 | 6030 | conntrack->flags = ntohs(nac->flags); |
a76a37ef JR |
6031 | if (conntrack->flags & NX_CT_F_FORCE && |
6032 | !(conntrack->flags & NX_CT_F_COMMIT)) { | |
6033 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6034 | goto out; | |
6035 | } | |
0a2869d5 | 6036 | |
5c7c16d8 | 6037 | error = decode_ct_zone(nac, conntrack, vl_mff_map, tlv_bitmap); |
07659514 JS |
6038 | if (error) { |
6039 | goto out; | |
6040 | } | |
6041 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 6042 | conntrack->alg = ntohs(nac->alg); |
07659514 | 6043 | |
8e53fe8c JS |
6044 | ofpbuf_pull(out, sizeof(*conntrack)); |
6045 | ||
0a2869d5 BP |
6046 | struct ofpbuf openflow = ofpbuf_const_initializer( |
6047 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
6048 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
6049 | ofp_version, | |
6050 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
6051 | out, OFPACT_CT, vl_mff_map, |
6052 | tlv_bitmap); | |
8e53fe8c JS |
6053 | if (error) { |
6054 | goto out; | |
6055 | } | |
6056 | ||
6057 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
6058 | out->header = &conntrack->ofpact; | |
ce058104 | 6059 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
6060 | |
6061 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
6062 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
6063 | const struct ofpact *a; |
6064 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
6065 | ||
6066 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
6067 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
6068 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
6069 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
6070 | "other than NAT without arguments are specified."); | |
6071 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6072 | goto out; | |
6073 | } | |
6074 | } | |
8e53fe8c JS |
6075 | } |
6076 | ||
07659514 | 6077 | out: |
8e53fe8c | 6078 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
6079 | return error; |
6080 | } | |
6081 | ||
6082 | static void | |
6083 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 6084 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
6085 | { |
6086 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
6087 | const size_t ofs = out->size; |
6088 | size_t len; | |
07659514 JS |
6089 | |
6090 | nac = put_NXAST_CT(out); | |
6091 | nac->flags = htons(conntrack->flags); | |
6092 | if (conntrack->zone_src.field) { | |
04f48a68 | 6093 | nac->zone_src = htonl(nxm_header_from_mff(conntrack->zone_src.field)); |
07659514 JS |
6094 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, |
6095 | conntrack->zone_src.n_bits); | |
6096 | } else { | |
6097 | nac->zone_src = htonl(0); | |
6098 | nac->zone_imm = htons(conntrack->zone_imm); | |
6099 | } | |
6100 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 6101 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
6102 | |
6103 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
6104 | ofpact_ct_get_action_len(conntrack), | |
6105 | out, ofp_version); | |
6106 | len += sizeof(*nac); | |
6107 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
6108 | nac->len = htons(len); | |
07659514 JS |
6109 | } |
6110 | ||
50f96b10 BP |
6111 | static char *OVS_WARN_UNUSED_RESULT |
6112 | parse_NAT(char *arg, const struct ofputil_port_map *port_map OVS_UNUSED, | |
6113 | struct ofpbuf *, enum ofputil_protocol * OVS_UNUSED); | |
9ac0aada | 6114 | |
07659514 JS |
6115 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
6116 | * action to 'ofpacts'. | |
6117 | * | |
6118 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6119 | * error. The caller is responsible for freeing the returned string. */ | |
6120 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
6121 | parse_CT(char *arg, const struct ofputil_port_map *port_map, |
6122 | struct ofpbuf *ofpacts, | |
8e53fe8c | 6123 | enum ofputil_protocol *usable_protocols) |
07659514 | 6124 | { |
8e53fe8c | 6125 | const size_t ct_offset = ofpacts_pull(ofpacts); |
07659514 JS |
6126 | struct ofpact_conntrack *oc; |
6127 | char *error = NULL; | |
6128 | char *key, *value; | |
6129 | ||
6130 | oc = ofpact_put_CT(ofpacts); | |
6131 | oc->flags = 0; | |
6132 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
6133 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6134 | if (!strcmp(key, "commit")) { | |
6135 | oc->flags |= NX_CT_F_COMMIT; | |
a76a37ef JR |
6136 | } else if (!strcmp(key, "force")) { |
6137 | oc->flags |= NX_CT_F_FORCE; | |
07659514 JS |
6138 | } else if (!strcmp(key, "table")) { |
6139 | error = str_to_u8(value, "recirc_table", &oc->recirc_table); | |
6140 | if (!error && oc->recirc_table == NX_CT_RECIRC_NONE) { | |
fd13c6b5 | 6141 | error = xasprintf("invalid table %#"PRIx8, oc->recirc_table); |
07659514 JS |
6142 | } |
6143 | } else if (!strcmp(key, "zone")) { | |
6144 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
6145 | ||
6146 | if (error) { | |
6147 | free(error); | |
6148 | error = mf_parse_subfield(&oc->zone_src, value); | |
6149 | if (error) { | |
6150 | return error; | |
6151 | } | |
6152 | } | |
d787ad39 JS |
6153 | } else if (!strcmp(key, "alg")) { |
6154 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada JR |
6155 | } else if (!strcmp(key, "nat")) { |
6156 | const size_t nat_offset = ofpacts_pull(ofpacts); | |
6157 | ||
50f96b10 | 6158 | error = parse_NAT(value, port_map, ofpacts, usable_protocols); |
9ac0aada JR |
6159 | /* Update CT action pointer and length. */ |
6160 | ofpacts->header = ofpbuf_push_uninit(ofpacts, nat_offset); | |
6161 | oc = ofpacts->header; | |
8e53fe8c JS |
6162 | } else if (!strcmp(key, "exec")) { |
6163 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
6164 | * nesting can be handled transparently. */ | |
76e3e669 | 6165 | enum ofputil_protocol usable_protocols2; |
9ac0aada | 6166 | const size_t exec_offset = ofpacts_pull(ofpacts); |
76e3e669 | 6167 | |
76e3e669 JR |
6168 | /* Initializes 'usable_protocol2', fold it back to |
6169 | * '*usable_protocols' afterwards, so that we do not lose | |
6170 | * restrictions already in there. */ | |
50f96b10 BP |
6171 | error = ofpacts_parse_copy(value, port_map, ofpacts, |
6172 | &usable_protocols2, false, OFPACT_CT); | |
76e3e669 | 6173 | *usable_protocols &= usable_protocols2; |
9ac0aada | 6174 | ofpacts->header = ofpbuf_push_uninit(ofpacts, exec_offset); |
8e53fe8c | 6175 | oc = ofpacts->header; |
07659514 JS |
6176 | } else { |
6177 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
6178 | } | |
6179 | if (error) { | |
6180 | break; | |
6181 | } | |
6182 | } | |
fce16ca1 | 6183 | if (!error && oc->flags & NX_CT_F_FORCE && !(oc->flags & NX_CT_F_COMMIT)) { |
a76a37ef JR |
6184 | error = xasprintf("\"force\" flag requires \"commit\" flag."); |
6185 | } | |
ce058104 | 6186 | ofpact_finish_CT(ofpacts, &oc); |
8e53fe8c | 6187 | ofpbuf_push_uninit(ofpacts, ct_offset); |
07659514 JS |
6188 | return error; |
6189 | } | |
6190 | ||
d787ad39 JS |
6191 | static void |
6192 | format_alg(int port, struct ds *s) | |
6193 | { | |
40c7b2fc JS |
6194 | switch(port) { |
6195 | case IPPORT_FTP: | |
b1c5bf1f | 6196 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
6197 | break; |
6198 | case IPPORT_TFTP: | |
6199 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
6200 | break; | |
6201 | case 0: | |
6202 | /* Don't print. */ | |
6203 | break; | |
6204 | default: | |
b1c5bf1f | 6205 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 6206 | break; |
d787ad39 JS |
6207 | } |
6208 | } | |
6209 | ||
50f96b10 BP |
6210 | static void format_NAT(const struct ofpact_nat *, |
6211 | const struct ofputil_port_map *port_map, | |
6212 | struct ds *ds); | |
9ac0aada | 6213 | |
07659514 | 6214 | static void |
50f96b10 BP |
6215 | format_CT(const struct ofpact_conntrack *a, |
6216 | const struct ofputil_port_map *port_map, | |
6217 | struct ds *s) | |
07659514 | 6218 | { |
b1c5bf1f | 6219 | ds_put_format(s, "%sct(%s", colors.paren, colors.end); |
07659514 | 6220 | if (a->flags & NX_CT_F_COMMIT) { |
b1c5bf1f | 6221 | ds_put_format(s, "%scommit%s,", colors.value, colors.end); |
07659514 | 6222 | } |
a76a37ef JR |
6223 | if (a->flags & NX_CT_F_FORCE) { |
6224 | ds_put_format(s, "%sforce%s,", colors.value, colors.end); | |
6225 | } | |
07659514 | 6226 | if (a->recirc_table != NX_CT_RECIRC_NONE) { |
b1c5bf1f QM |
6227 | ds_put_format(s, "%stable=%s%"PRIu8",", |
6228 | colors.special, colors.end, a->recirc_table); | |
07659514 JS |
6229 | } |
6230 | if (a->zone_src.field) { | |
b1c5bf1f | 6231 | ds_put_format(s, "%szone=%s", colors.param, colors.end); |
07659514 JS |
6232 | mf_format_subfield(&a->zone_src, s); |
6233 | ds_put_char(s, ','); | |
6234 | } else if (a->zone_imm) { | |
b1c5bf1f QM |
6235 | ds_put_format(s, "%szone=%s%"PRIu16",", |
6236 | colors.param, colors.end, a->zone_imm); | |
07659514 | 6237 | } |
9ac0aada JR |
6238 | /* If the first action is a NAT action, format it outside of the 'exec' |
6239 | * envelope. */ | |
6240 | const struct ofpact *action = a->actions; | |
6241 | size_t actions_len = ofpact_ct_get_action_len(a); | |
6242 | if (actions_len && action->type == OFPACT_NAT) { | |
50f96b10 | 6243 | format_NAT(ofpact_get_NAT(action), port_map, s); |
9ac0aada JR |
6244 | ds_put_char(s, ','); |
6245 | actions_len -= OFPACT_ALIGN(action->len); | |
6246 | action = ofpact_next(action); | |
6247 | } | |
6248 | if (actions_len) { | |
b1c5bf1f | 6249 | ds_put_format(s, "%sexec(%s", colors.paren, colors.end); |
50f96b10 | 6250 | ofpacts_format(action, actions_len, port_map, s); |
b1c5bf1f | 6251 | ds_put_format(s, "%s),%s", colors.paren, colors.end); |
8e53fe8c | 6252 | } |
d787ad39 | 6253 | format_alg(a->alg, s); |
07659514 | 6254 | ds_chomp(s, ','); |
b1c5bf1f | 6255 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
07659514 | 6256 | } |
9ac0aada | 6257 | \f |
72fe7578 BP |
6258 | /* ct_clear action. */ |
6259 | ||
6260 | static enum ofperr | |
6261 | decode_NXAST_RAW_CT_CLEAR(struct ofpbuf *out) | |
6262 | { | |
6263 | ofpact_put_CT_CLEAR(out); | |
6264 | return 0; | |
6265 | } | |
6266 | ||
6267 | static void | |
6268 | encode_CT_CLEAR(const struct ofpact_null *null OVS_UNUSED, | |
6269 | enum ofp_version ofp_version OVS_UNUSED, | |
6270 | struct ofpbuf *out) | |
6271 | { | |
6272 | put_NXAST_CT_CLEAR(out); | |
6273 | } | |
6274 | ||
6275 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
6276 | parse_CT_CLEAR(char *arg OVS_UNUSED, |
6277 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6278 | struct ofpbuf *ofpacts, | |
72fe7578 BP |
6279 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
6280 | { | |
6281 | ofpact_put_CT_CLEAR(ofpacts); | |
6282 | return NULL; | |
6283 | } | |
6284 | ||
6285 | static void | |
50f96b10 BP |
6286 | format_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, |
6287 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6288 | struct ds *s) | |
72fe7578 BP |
6289 | { |
6290 | ds_put_format(s, "%sct_clear%s", colors.value, colors.end); | |
50f96b10 BP |
6291 | } |
6292 | \f | |
9ac0aada JR |
6293 | /* NAT action. */ |
6294 | ||
6295 | /* Which optional fields are present? */ | |
6296 | enum nx_nat_range { | |
6297 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
6298 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
6299 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
6300 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
6301 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
6302 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
6303 | }; | |
6304 | ||
6305 | /* Action structure for NXAST_NAT. */ | |
6306 | struct nx_action_nat { | |
6307 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6308 | ovs_be16 len; /* At least 16. */ | |
6309 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6310 | ovs_be16 subtype; /* NXAST_NAT. */ | |
6311 | uint8_t pad[2]; /* Must be zero. */ | |
6312 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
6313 | * Unspecified flag bits must be zero. */ | |
6314 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
6315 | /* Followed by optional parameters as specified by 'range_present' */ | |
6316 | }; | |
6317 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
6318 | ||
6319 | static void | |
6320 | encode_NAT(const struct ofpact_nat *nat, | |
6321 | enum ofp_version ofp_version OVS_UNUSED, | |
6322 | struct ofpbuf *out) | |
6323 | { | |
6324 | struct nx_action_nat *nan; | |
6325 | const size_t ofs = out->size; | |
6326 | uint16_t range_present = 0; | |
6327 | ||
6328 | nan = put_NXAST_NAT(out); | |
6329 | nan->flags = htons(nat->flags); | |
6330 | if (nat->range_af == AF_INET) { | |
6331 | if (nat->range.addr.ipv4.min) { | |
6332 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6333 | *min = nat->range.addr.ipv4.min; | |
6334 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
6335 | } | |
6336 | if (nat->range.addr.ipv4.max) { | |
6337 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6338 | *max = nat->range.addr.ipv4.max; | |
6339 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
6340 | } | |
6341 | } else if (nat->range_af == AF_INET6) { | |
6342 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6343 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
6344 | *min = nat->range.addr.ipv6.min; | |
6345 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
6346 | } | |
6347 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
6348 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
6349 | *max = nat->range.addr.ipv6.max; | |
6350 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
6351 | } | |
6352 | } | |
6353 | if (nat->range_af != AF_UNSPEC) { | |
6354 | if (nat->range.proto.min) { | |
6355 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6356 | *min = htons(nat->range.proto.min); | |
6357 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
6358 | } | |
6359 | if (nat->range.proto.max) { | |
6360 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6361 | *max = htons(nat->range.proto.max); | |
6362 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
6363 | } | |
6364 | } | |
6365 | pad_ofpat(out, ofs); | |
6366 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
6367 | nan->range_present = htons(range_present); | |
6368 | } | |
6369 | ||
6370 | static enum ofperr | |
6371 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
6372 | enum ofp_version ofp_version OVS_UNUSED, | |
6373 | struct ofpbuf *out) | |
6374 | { | |
6375 | struct ofpact_nat *nat; | |
6376 | uint16_t range_present = ntohs(nan->range_present); | |
6377 | const char *opts = (char *)(nan + 1); | |
6378 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
6379 | ||
6380 | nat = ofpact_put_NAT(out); | |
6381 | nat->flags = ntohs(nan->flags); | |
6382 | ||
ae8b9260 JR |
6383 | /* Check for unknown or mutually exclusive flags. */ |
6384 | if ((nat->flags & ~NX_NAT_F_MASK) | |
6385 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
6386 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
6387 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
6388 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6389 | } | |
6390 | ||
9ac0aada JR |
6391 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
6392 | (LEN >= sizeof(TYPE) \ | |
6393 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
6394 | SRC += sizeof(TYPE)) \ | |
6395 | : NULL) | |
6396 | ||
6397 | nat->range_af = AF_UNSPEC; | |
6398 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
6399 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
6400 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6401 | } | |
6402 | ||
6403 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
6404 | || !nat->range.addr.ipv4.min) { | |
6405 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6406 | } | |
6407 | ||
6408 | nat->range_af = AF_INET; | |
6409 | ||
6410 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6411 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
6412 | ovs_be32)) { | |
6413 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6414 | } | |
6415 | if (ntohl(nat->range.addr.ipv4.max) | |
6416 | < ntohl(nat->range.addr.ipv4.min)) { | |
6417 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6418 | } | |
6419 | } | |
6420 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6421 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6422 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
6423 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
6424 | struct in6_addr) | |
6425 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6426 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6427 | } | |
6428 | ||
6429 | nat->range_af = AF_INET6; | |
6430 | ||
6431 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6432 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
6433 | struct in6_addr)) { | |
6434 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6435 | } | |
6436 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
6437 | sizeof(struct in6_addr)) < 0) { | |
6438 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6439 | } | |
6440 | } | |
6441 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6442 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6443 | } | |
6444 | ||
6445 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
6446 | ovs_be16 proto; | |
6447 | ||
6448 | if (nat->range_af == AF_UNSPEC) { | |
6449 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6450 | } | |
6451 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
6452 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6453 | } | |
6454 | nat->range.proto.min = ntohs(proto); | |
6455 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6456 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
6457 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6458 | } | |
6459 | nat->range.proto.max = ntohs(proto); | |
6460 | if (nat->range.proto.max < nat->range.proto.min) { | |
6461 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6462 | } | |
6463 | } | |
6464 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6465 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6466 | } | |
6467 | ||
6468 | return 0; | |
6469 | } | |
6470 | ||
6471 | static void | |
50f96b10 BP |
6472 | format_NAT(const struct ofpact_nat *a, |
6473 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6474 | struct ds *ds) | |
9ac0aada | 6475 | { |
b1c5bf1f | 6476 | ds_put_format(ds, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
6477 | |
6478 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
b1c5bf1f QM |
6479 | ds_put_format(ds, "%s(%s", colors.paren, colors.end); |
6480 | ds_put_format(ds, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
6481 | colors.param, colors.end); | |
9ac0aada JR |
6482 | |
6483 | if (a->range_af != AF_UNSPEC) { | |
b1c5bf1f | 6484 | ds_put_format(ds, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
6485 | |
6486 | if (a->range_af == AF_INET) { | |
6487 | ds_put_format(ds, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); | |
6488 | ||
6489 | if (a->range.addr.ipv4.max | |
6490 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
6491 | ds_put_format(ds, "-"IP_FMT, | |
6492 | IP_ARGS(a->range.addr.ipv4.max)); | |
6493 | } | |
6494 | } else if (a->range_af == AF_INET6) { | |
6495 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, ds, | |
6496 | a->range.proto.min); | |
6497 | ||
6498 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
6499 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
6500 | sizeof(struct in6_addr)) != 0) { | |
6501 | ds_put_char(ds, '-'); | |
6502 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, ds, | |
6503 | a->range.proto.min); | |
6504 | } | |
6505 | } | |
6506 | if (a->range.proto.min) { | |
6507 | ds_put_char(ds, ':'); | |
6508 | ds_put_format(ds, "%"PRIu16, a->range.proto.min); | |
6509 | ||
6510 | if (a->range.proto.max | |
6511 | && a->range.proto.max != a->range.proto.min) { | |
6512 | ds_put_format(ds, "-%"PRIu16, a->range.proto.max); | |
6513 | } | |
6514 | } | |
6515 | ds_put_char(ds, ','); | |
6516 | ||
6517 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
b1c5bf1f QM |
6518 | ds_put_format(ds, "%spersistent%s,", |
6519 | colors.value, colors.end); | |
9ac0aada JR |
6520 | } |
6521 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
b1c5bf1f | 6522 | ds_put_format(ds, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
6523 | } |
6524 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
b1c5bf1f | 6525 | ds_put_format(ds, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
6526 | } |
6527 | } | |
6528 | ds_chomp(ds, ','); | |
b1c5bf1f | 6529 | ds_put_format(ds, "%s)%s", colors.paren, colors.end); |
9ac0aada JR |
6530 | } |
6531 | } | |
6532 | ||
6533 | static char * OVS_WARN_UNUSED_RESULT | |
6534 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
6535 | { | |
6536 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
6537 | int n = 0; | |
6538 | ||
6539 | on->range_af = AF_UNSPEC; | |
6540 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6541 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
6542 | on->range_af = AF_INET; | |
6543 | ||
6544 | if (s[n] == '-') { | |
6545 | n++; | |
6546 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6547 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
6548 | || (ntohl(on->range.addr.ipv4.max) | |
6549 | < ntohl(on->range.addr.ipv4.min))) { | |
6550 | goto error; | |
6551 | } | |
6552 | } | |
6553 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
6554 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
6555 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
6556 | on->range_af = AF_INET6; | |
6557 | ||
6558 | if (s[n] == '-') { | |
6559 | n++; | |
6560 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
6561 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
6562 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
6563 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
6564 | sizeof on->range.addr.ipv6.max) < 0) { | |
6565 | goto error; | |
6566 | } | |
6567 | } | |
6568 | } | |
6569 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
6570 | n++; | |
6571 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
6572 | goto error; | |
6573 | } | |
6574 | if (s[n] == '-') { | |
6575 | n++; | |
6576 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
6577 | || on->range.proto.max < on->range.proto.min) { | |
6578 | goto error; | |
6579 | } | |
6580 | } | |
6581 | } | |
6582 | if (strlen(s) != n) { | |
6583 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
6584 | &s[n], s, n); | |
6585 | } | |
6586 | return NULL; | |
6587 | error: | |
6588 | return xasprintf("invalid nat range \"%s\"", s); | |
6589 | } | |
6590 | ||
6591 | ||
6592 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
6593 | * action to 'ofpacts'. | |
6594 | * | |
6595 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6596 | * error. The caller is responsible for freeing the returned string. */ | |
6597 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
6598 | parse_NAT(char *arg, |
6599 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6600 | struct ofpbuf *ofpacts, | |
9ac0aada JR |
6601 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
6602 | { | |
6603 | struct ofpact_nat *on = ofpact_put_NAT(ofpacts); | |
6604 | char *key, *value; | |
6605 | ||
6606 | on->flags = 0; | |
6607 | on->range_af = AF_UNSPEC; | |
6608 | ||
6609 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6610 | char *error = NULL; | |
6611 | ||
6612 | if (!strcmp(key, "src")) { | |
6613 | on->flags |= NX_NAT_F_SRC; | |
6614 | error = str_to_nat_range(value, on); | |
6615 | } else if (!strcmp(key, "dst")) { | |
6616 | on->flags |= NX_NAT_F_DST; | |
6617 | error = str_to_nat_range(value, on); | |
6618 | } else if (!strcmp(key, "persistent")) { | |
6619 | on->flags |= NX_NAT_F_PERSISTENT; | |
6620 | } else if (!strcmp(key, "hash")) { | |
6621 | on->flags |= NX_NAT_F_PROTO_HASH; | |
6622 | } else if (!strcmp(key, "random")) { | |
6623 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
6624 | } else { | |
6625 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
6626 | key); | |
6627 | } | |
6628 | if (error) { | |
6629 | return error; | |
6630 | } | |
6631 | } | |
6632 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 6633 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
6634 | } |
6635 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
6636 | if (on->flags) { | |
ae8b9260 | 6637 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
6638 | } |
6639 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 6640 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
6641 | } |
6642 | } | |
ae8b9260 JR |
6643 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
6644 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
6645 | } | |
6646 | ||
9ac0aada JR |
6647 | return NULL; |
6648 | } | |
6649 | ||
aaca4fe0 WT |
6650 | /* Truncate output action. */ |
6651 | struct nx_action_output_trunc { | |
6652 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6653 | ovs_be16 len; /* At least 16. */ | |
6654 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6655 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
6656 | ovs_be16 port; /* Output port */ | |
6657 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
6658 | }; | |
6659 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
6660 | ||
6661 | static enum ofperr | |
6662 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
6663 | enum ofp_version ofp_version OVS_UNUSED, | |
6664 | struct ofpbuf *out) | |
6665 | { | |
6666 | struct ofpact_output_trunc *output_trunc; | |
6667 | ||
6668 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
6669 | output_trunc->max_len = ntohl(natrc->max_len); | |
6670 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
6671 | ||
6672 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
6673 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6674 | } | |
6675 | return 0; | |
6676 | } | |
6677 | ||
6678 | static void | |
6679 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
6680 | enum ofp_version ofp_version OVS_UNUSED, | |
6681 | struct ofpbuf *out) | |
6682 | { | |
6683 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
6684 | ||
6685 | natrc->max_len = htonl(output_trunc->max_len); | |
6686 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
6687 | } | |
6688 | ||
6689 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 BP |
6690 | parse_OUTPUT_TRUNC(const char *arg, |
6691 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6692 | struct ofpbuf *ofpacts OVS_UNUSED, | |
6693 | enum ofputil_protocol *usable_protocols OVS_UNUSED) | |
aaca4fe0 WT |
6694 | { |
6695 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
6696 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
6697 | return xasprintf("unknown action %s", arg); | |
6698 | } | |
6699 | ||
6700 | static void | |
50f96b10 BP |
6701 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, |
6702 | const struct ofputil_port_map *port_map, struct ds *s) | |
aaca4fe0 | 6703 | { |
50f96b10 BP |
6704 | ds_put_format(s, "%soutput%s(port=", colors.special, colors.end); |
6705 | ofputil_format_port(a->port, port_map, s); | |
6706 | ds_put_format(s, ",max_len=%"PRIu32")", a->max_len); | |
aaca4fe0 WT |
6707 | } |
6708 | ||
d4abaff5 | 6709 | \f |
c2d936a4 BP |
6710 | /* Meter instruction. */ |
6711 | ||
6712 | static void | |
6713 | encode_METER(const struct ofpact_meter *meter, | |
6714 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6715 | { | |
6716 | if (ofp_version >= OFP13_VERSION) { | |
6717 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
6718 | } | |
6719 | } | |
6720 | ||
cab50449 | 6721 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
6722 | parse_METER(char *arg, |
6723 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6724 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
6725 | enum ofputil_protocol *usable_protocols) |
6726 | { | |
6727 | *usable_protocols &= OFPUTIL_P_OF13_UP; | |
6728 | return str_to_u32(arg, &ofpact_put_METER(ofpacts)->meter_id); | |
6729 | } | |
6730 | ||
6731 | static void | |
50f96b10 BP |
6732 | format_METER(const struct ofpact_meter *a, |
6733 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6734 | struct ds *s) | |
c2d936a4 | 6735 | { |
b1c5bf1f QM |
6736 | ds_put_format(s, "%smeter:%s%"PRIu32, |
6737 | colors.param, colors.end, a->meter_id); | |
c2d936a4 BP |
6738 | } |
6739 | \f | |
6740 | /* Clear-Actions instruction. */ | |
6741 | ||
6742 | static void | |
6743 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
6744 | enum ofp_version ofp_version OVS_UNUSED, | |
6745 | struct ofpbuf *out OVS_UNUSED) | |
6746 | { | |
6747 | if (ofp_version > OFP10_VERSION) { | |
6748 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
6749 | } | |
6750 | } | |
6751 | ||
cab50449 | 6752 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
6753 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, |
6754 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6755 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
6756 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
6757 | { | |
6758 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
6759 | return NULL; | |
6760 | } | |
6761 | ||
6762 | static void | |
50f96b10 BP |
6763 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, |
6764 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6765 | struct ds *s) | |
c2d936a4 | 6766 | { |
b1c5bf1f | 6767 | ds_put_format(s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 BP |
6768 | } |
6769 | \f | |
6770 | /* Write-Actions instruction. */ | |
6771 | ||
6772 | static void | |
6773 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
6774 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6775 | { | |
6776 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 6777 | const size_t ofs = out->size; |
c2d936a4 BP |
6778 | |
6779 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
6780 | ofpacts_put_openflow_actions(actions->actions, | |
6781 | ofpact_nest_get_action_len(actions), | |
6782 | out, ofp_version); | |
6783 | ofpacts_update_instruction_actions(out, ofs); | |
6784 | } | |
6785 | } | |
6786 | ||
cab50449 | 6787 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
6788 | parse_WRITE_ACTIONS(char *arg, const struct ofputil_port_map *port_map, |
6789 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
6790 | enum ofputil_protocol *usable_protocols) |
6791 | { | |
d824b5b7 | 6792 | size_t ofs = ofpacts_pull(ofpacts); |
c2d936a4 BP |
6793 | struct ofpact_nest *on; |
6794 | char *error; | |
c2d936a4 BP |
6795 | |
6796 | /* Add a Write-Actions instruction and then pull it off. */ | |
6797 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); | |
6798 | ofpbuf_pull(ofpacts, sizeof *on); | |
6799 | ||
6800 | /* Parse nested actions. | |
6801 | * | |
6802 | * We pulled off "write-actions" and the previous actions because the | |
6803 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
6804 | * that it doesn't actually include the nested actions. That means that | |
6805 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
6806 | * follows a Write-Actions, which is an invalid order. */ | |
50f96b10 | 6807 | error = ofpacts_parse(arg, port_map, ofpacts, usable_protocols, false, |
d824b5b7 | 6808 | OFPACT_WRITE_ACTIONS); |
c2d936a4 BP |
6809 | |
6810 | /* Put the Write-Actions back on and update its length. */ | |
6811 | on = ofpbuf_push_uninit(ofpacts, sizeof *on); | |
6fd6ed71 | 6812 | on->ofpact.len = ofpacts->size; |
c2d936a4 BP |
6813 | |
6814 | /* Put any previous actions or instructions back on. */ | |
6815 | ofpbuf_push_uninit(ofpacts, ofs); | |
6816 | ||
6817 | return error; | |
6818 | } | |
6819 | ||
6820 | static void | |
50f96b10 BP |
6821 | format_WRITE_ACTIONS(const struct ofpact_nest *a, |
6822 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 | 6823 | { |
b1c5bf1f | 6824 | ds_put_format(s, "%swrite_actions(%s", colors.paren, colors.end); |
50f96b10 | 6825 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), port_map, s); |
b1c5bf1f | 6826 | ds_put_format(s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
6827 | } |
6828 | \f | |
6829 | /* Action structure for NXAST_WRITE_METADATA. | |
6830 | * | |
6831 | * Modifies the 'mask' bits of the metadata value. */ | |
6832 | struct nx_action_write_metadata { | |
6833 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6834 | ovs_be16 len; /* Length is 32. */ | |
6835 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6836 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
6837 | uint8_t zeros[6]; /* Must be zero. */ | |
6838 | ovs_be64 metadata; /* Metadata register. */ | |
6839 | ovs_be64 mask; /* Metadata mask. */ | |
6840 | }; | |
6841 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
6842 | ||
6843 | static enum ofperr | |
6844 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 6845 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
6846 | struct ofpbuf *out) |
6847 | { | |
6848 | struct ofpact_metadata *om; | |
6849 | ||
6850 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
6851 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6852 | } | |
6853 | ||
6854 | om = ofpact_put_WRITE_METADATA(out); | |
6855 | om->metadata = nawm->metadata; | |
6856 | om->mask = nawm->mask; | |
6857 | ||
6858 | return 0; | |
6859 | } | |
6860 | ||
6861 | static void | |
6862 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
6863 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6864 | { | |
6865 | if (ofp_version == OFP10_VERSION) { | |
6866 | struct nx_action_write_metadata *nawm; | |
6867 | ||
6868 | nawm = put_NXAST_WRITE_METADATA(out); | |
6869 | nawm->metadata = metadata->metadata; | |
6870 | nawm->mask = metadata->mask; | |
6871 | } else { | |
6872 | struct ofp11_instruction_write_metadata *oiwm; | |
6873 | ||
6874 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
6875 | oiwm->metadata = metadata->metadata; | |
6876 | oiwm->metadata_mask = metadata->mask; | |
6877 | } | |
6878 | } | |
6879 | ||
cab50449 | 6880 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
6881 | parse_WRITE_METADATA(char *arg, |
6882 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6883 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
6884 | enum ofputil_protocol *usable_protocols) |
6885 | { | |
6886 | struct ofpact_metadata *om; | |
6887 | char *mask = strchr(arg, '/'); | |
6888 | ||
6889 | *usable_protocols &= OFPUTIL_P_NXM_OF11_UP; | |
6890 | ||
6891 | om = ofpact_put_WRITE_METADATA(ofpacts); | |
6892 | if (mask) { | |
6893 | char *error; | |
6894 | ||
6895 | *mask = '\0'; | |
6896 | error = str_to_be64(mask + 1, &om->mask); | |
6897 | if (error) { | |
6898 | return error; | |
6899 | } | |
6900 | } else { | |
6901 | om->mask = OVS_BE64_MAX; | |
6902 | } | |
6903 | ||
6904 | return str_to_be64(arg, &om->metadata); | |
6905 | } | |
6906 | ||
6907 | static void | |
50f96b10 BP |
6908 | format_WRITE_METADATA(const struct ofpact_metadata *a, |
6909 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6910 | struct ds *s) | |
c2d936a4 | 6911 | { |
b1c5bf1f QM |
6912 | ds_put_format(s, "%swrite_metadata:%s%#"PRIx64, |
6913 | colors.param, colors.end, ntohll(a->metadata)); | |
c2d936a4 BP |
6914 | if (a->mask != OVS_BE64_MAX) { |
6915 | ds_put_format(s, "/%#"PRIx64, ntohll(a->mask)); | |
6916 | } | |
4cceacb9 | 6917 | } |
f25d0cf3 | 6918 | \f |
c2d936a4 | 6919 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
6920 | |
6921 | static void | |
c2d936a4 BP |
6922 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
6923 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 6924 | { |
c2d936a4 BP |
6925 | if (ofp_version == OFP10_VERSION) { |
6926 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 6927 | |
c2d936a4 BP |
6928 | nar = put_NXAST_RESUBMIT_TABLE(out); |
6929 | nar->table = goto_table->table_id; | |
6930 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
6931 | } else { | |
6932 | struct ofp11_instruction_goto_table *oigt; | |
6933 | ||
6934 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
6935 | oigt->table_id = goto_table->table_id; | |
6936 | memset(oigt->pad, 0, sizeof oigt->pad); | |
6937 | } | |
6938 | } | |
6939 | ||
cab50449 | 6940 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
6941 | parse_GOTO_TABLE(char *arg, |
6942 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6943 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
6944 | enum ofputil_protocol *usable_protocols OVS_UNUSED) |
6945 | { | |
6946 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
6947 | char *table_s = strsep(&arg, ","); | |
6948 | if (!table_s || !table_s[0]) { | |
6949 | return xstrdup("instruction goto-table needs table id"); | |
6950 | } | |
6951 | return str_to_u8(table_s, "table", &ogt->table_id); | |
6952 | } | |
6953 | ||
6954 | static void | |
50f96b10 BP |
6955 | format_GOTO_TABLE(const struct ofpact_goto_table *a, |
6956 | const struct ofputil_port_map *port_map OVS_UNUSED, | |
6957 | struct ds *s) | |
c2d936a4 | 6958 | { |
b1c5bf1f QM |
6959 | ds_put_format(s, "%sgoto_table:%s%"PRIu8, |
6960 | colors.param, colors.end, a->table_id); | |
c2d936a4 BP |
6961 | } |
6962 | \f | |
6963 | static void | |
5ad4b3f8 | 6964 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
6965 | const struct ofp_action_header *bad_action, enum ofperr error) |
6966 | { | |
6967 | if (!VLOG_DROP_WARN(&rl)) { | |
6968 | struct ds s; | |
6969 | ||
6970 | ds_init(&s); | |
5ad4b3f8 | 6971 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
6972 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
6973 | (char *)bad_action - (char *)actions, | |
6974 | ofperr_get_name(error), ds_cstr(&s)); | |
6975 | ds_destroy(&s); | |
6976 | } | |
6977 | } | |
6978 | ||
6979 | static enum ofperr | |
6980 | ofpacts_decode(const void *actions, size_t actions_len, | |
04f48a68 | 6981 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
6982 | const struct vl_mff_map *vl_mff_map, |
6983 | uint64_t *ofpacts_tlv_bitmap, struct ofpbuf *ofpacts) | |
c2d936a4 | 6984 | { |
0a2869d5 | 6985 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
6986 | while (openflow.size) { |
6987 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
6988 | enum ofp_raw_action_type raw; |
6989 | enum ofperr error; | |
6990 | uint64_t arg; | |
6991 | ||
6992 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
6993 | if (!error) { | |
04f48a68 | 6994 | error = ofpact_decode(action, raw, ofp_version, arg, vl_mff_map, |
5c7c16d8 | 6995 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
6996 | } |
6997 | ||
6998 | if (error) { | |
5ad4b3f8 | 6999 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
7000 | return error; |
7001 | } | |
7002 | } | |
c2d936a4 BP |
7003 | return 0; |
7004 | } | |
7005 | ||
7006 | static enum ofperr | |
7007 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
7008 | unsigned int actions_len, | |
7009 | enum ofp_version version, | |
7010 | uint32_t allowed_ovsinsts, | |
d824b5b7 | 7011 | struct ofpbuf *ofpacts, |
04f48a68 | 7012 | enum ofpact_type outer_action, |
5c7c16d8 YHW |
7013 | const struct vl_mff_map *vl_mff_map, |
7014 | uint64_t *ofpacts_tlv_bitmap) | |
c2d936a4 BP |
7015 | { |
7016 | const struct ofp_action_header *actions; | |
9abca1e5 | 7017 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
7018 | enum ofperr error; |
7019 | ||
c2d936a4 BP |
7020 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
7021 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
7022 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
7023 | return OFPERR_OFPBRC_BAD_LEN; | |
7024 | } | |
7025 | ||
7026 | actions = ofpbuf_try_pull(openflow, actions_len); | |
7027 | if (actions == NULL) { | |
7028 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
7029 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 7030 | actions_len, openflow->size); |
c2d936a4 BP |
7031 | return OFPERR_OFPBRC_BAD_LEN; |
7032 | } | |
7033 | ||
5c7c16d8 YHW |
7034 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
7035 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 | 7036 | if (error) { |
9abca1e5 | 7037 | ofpacts->size = orig_size; |
c2d936a4 BP |
7038 | return error; |
7039 | } | |
7040 | ||
d824b5b7 JS |
7041 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
7042 | outer_action); | |
c2d936a4 | 7043 | if (error) { |
9abca1e5 | 7044 | ofpacts->size = orig_size; |
c2d936a4 BP |
7045 | } |
7046 | return error; | |
7047 | } | |
7048 | ||
9abca1e5 BP |
7049 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
7050 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
7051 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
7052 | * Returns 0 if successful, otherwise an OpenFlow error. |
7053 | * | |
7054 | * Actions are processed according to their OpenFlow version which | |
7055 | * is provided in the 'version' parameter. | |
7056 | * | |
7057 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
7058 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
7059 | * function. | |
7060 | * | |
5c7c16d8 YHW |
7061 | * 'vl_mff_map' and 'ofpacts_tlv_bitmap' are optional. If 'vl_mff_map' is |
7062 | * provided, it is used to get variable length mf_fields with configured | |
7063 | * length in the actions. If an action uses a variable length mf_field, | |
7064 | * 'ofpacts_tlv_bitmap' is updated accordingly for ref counting. If | |
7065 | * 'vl_mff_map' is not provided, the default mf_fields with maximum length | |
7066 | * will be used. | |
7067 | * | |
c2d936a4 BP |
7068 | * The parsed actions are valid generically, but they may not be valid in a |
7069 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
7070 | * generically, but specific datapaths may only support port numbers in a | |
7071 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
7072 | * valid in a specific context. */ | |
7073 | enum ofperr | |
7074 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
7075 | unsigned int actions_len, | |
7076 | enum ofp_version version, | |
04f48a68 | 7077 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7078 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
7079 | struct ofpbuf *ofpacts) |
7080 | { | |
7081 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
7082 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
7083 | ofpacts, 0, vl_mff_map, |
7084 | ofpacts_tlv_bitmap); | |
c2d936a4 BP |
7085 | } |
7086 | \f | |
7087 | /* OpenFlow 1.1 actions. */ | |
7088 | ||
7089 | ||
7090 | /* True if an action sets the value of a field | |
7091 | * in a way that is compatibile with the action set. | |
1b0ee636 | 7092 | * The field can be set via either a set or a move action. |
c2d936a4 BP |
7093 | * False otherwise. */ |
7094 | static bool | |
1b0ee636 | 7095 | ofpact_is_set_or_move_action(const struct ofpact *a) |
c2d936a4 BP |
7096 | { |
7097 | switch (a->type) { | |
7098 | case OFPACT_SET_FIELD: | |
1b0ee636 | 7099 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
7100 | case OFPACT_SET_ETH_DST: |
7101 | case OFPACT_SET_ETH_SRC: | |
7102 | case OFPACT_SET_IP_DSCP: | |
7103 | case OFPACT_SET_IP_ECN: | |
7104 | case OFPACT_SET_IP_TTL: | |
7105 | case OFPACT_SET_IPV4_DST: | |
7106 | case OFPACT_SET_IPV4_SRC: | |
7107 | case OFPACT_SET_L4_DST_PORT: | |
7108 | case OFPACT_SET_L4_SRC_PORT: | |
7109 | case OFPACT_SET_MPLS_LABEL: | |
7110 | case OFPACT_SET_MPLS_TC: | |
7111 | case OFPACT_SET_MPLS_TTL: | |
7112 | case OFPACT_SET_QUEUE: | |
7113 | case OFPACT_SET_TUNNEL: | |
7114 | case OFPACT_SET_VLAN_PCP: | |
7115 | case OFPACT_SET_VLAN_VID: | |
f839892a JS |
7116 | case OFPACT_ENCAP: |
7117 | case OFPACT_DECAP: | |
c2d936a4 BP |
7118 | return true; |
7119 | case OFPACT_BUNDLE: | |
7120 | case OFPACT_CLEAR_ACTIONS: | |
07659514 | 7121 | case OFPACT_CT: |
72fe7578 | 7122 | case OFPACT_CT_CLEAR: |
7ae62a67 | 7123 | case OFPACT_CLONE: |
9ac0aada | 7124 | case OFPACT_NAT: |
c2d936a4 BP |
7125 | case OFPACT_CONTROLLER: |
7126 | case OFPACT_DEC_MPLS_TTL: | |
7127 | case OFPACT_DEC_TTL: | |
7128 | case OFPACT_ENQUEUE: | |
7129 | case OFPACT_EXIT: | |
e672ff9b | 7130 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
7131 | case OFPACT_FIN_TIMEOUT: |
7132 | case OFPACT_GOTO_TABLE: | |
7133 | case OFPACT_GROUP: | |
7134 | case OFPACT_LEARN: | |
18080541 | 7135 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7136 | case OFPACT_METER: |
7137 | case OFPACT_MULTIPATH: | |
7138 | case OFPACT_NOTE: | |
7139 | case OFPACT_OUTPUT: | |
7140 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 7141 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 BP |
7142 | case OFPACT_POP_MPLS: |
7143 | case OFPACT_POP_QUEUE: | |
7144 | case OFPACT_PUSH_MPLS: | |
7145 | case OFPACT_PUSH_VLAN: | |
c2d936a4 BP |
7146 | case OFPACT_RESUBMIT: |
7147 | case OFPACT_SAMPLE: | |
7148 | case OFPACT_STACK_POP: | |
7149 | case OFPACT_STACK_PUSH: | |
7150 | case OFPACT_STRIP_VLAN: | |
7151 | case OFPACT_WRITE_ACTIONS: | |
7152 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 7153 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
7154 | return false; |
7155 | default: | |
7156 | OVS_NOT_REACHED(); | |
7157 | } | |
7158 | } | |
7159 | ||
7160 | /* True if an action is allowed in the action set. | |
7161 | * False otherwise. */ | |
7162 | static bool | |
7163 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
7164 | { | |
7165 | switch (a->type) { | |
7166 | case OFPACT_DEC_MPLS_TTL: | |
7167 | case OFPACT_DEC_TTL: | |
7168 | case OFPACT_GROUP: | |
7169 | case OFPACT_OUTPUT: | |
aaca4fe0 | 7170 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 BP |
7171 | case OFPACT_POP_MPLS: |
7172 | case OFPACT_PUSH_MPLS: | |
7173 | case OFPACT_PUSH_VLAN: | |
1b0ee636 | 7174 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
7175 | case OFPACT_SET_FIELD: |
7176 | case OFPACT_SET_ETH_DST: | |
7177 | case OFPACT_SET_ETH_SRC: | |
7178 | case OFPACT_SET_IP_DSCP: | |
7179 | case OFPACT_SET_IP_ECN: | |
7180 | case OFPACT_SET_IP_TTL: | |
7181 | case OFPACT_SET_IPV4_DST: | |
7182 | case OFPACT_SET_IPV4_SRC: | |
7183 | case OFPACT_SET_L4_DST_PORT: | |
7184 | case OFPACT_SET_L4_SRC_PORT: | |
7185 | case OFPACT_SET_MPLS_LABEL: | |
7186 | case OFPACT_SET_MPLS_TC: | |
7187 | case OFPACT_SET_MPLS_TTL: | |
7188 | case OFPACT_SET_QUEUE: | |
7189 | case OFPACT_SET_TUNNEL: | |
7190 | case OFPACT_SET_VLAN_PCP: | |
7191 | case OFPACT_SET_VLAN_VID: | |
7192 | case OFPACT_STRIP_VLAN: | |
f839892a JS |
7193 | case OFPACT_ENCAP: |
7194 | case OFPACT_DECAP: | |
c2d936a4 BP |
7195 | return true; |
7196 | ||
7197 | /* In general these actions are excluded because they are not part of | |
7198 | * the OpenFlow specification nor map to actions that are defined in | |
7199 | * the specification. Thus the order in which they should be applied | |
7200 | * in the action set is undefined. */ | |
7201 | case OFPACT_BUNDLE: | |
7ae62a67 | 7202 | case OFPACT_CLONE: |
c2d936a4 | 7203 | case OFPACT_CONTROLLER: |
07659514 | 7204 | case OFPACT_CT: |
72fe7578 | 7205 | case OFPACT_CT_CLEAR: |
9ac0aada | 7206 | case OFPACT_NAT: |
c2d936a4 BP |
7207 | case OFPACT_ENQUEUE: |
7208 | case OFPACT_EXIT: | |
e672ff9b | 7209 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
7210 | case OFPACT_FIN_TIMEOUT: |
7211 | case OFPACT_LEARN: | |
18080541 | 7212 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7213 | case OFPACT_MULTIPATH: |
7214 | case OFPACT_NOTE: | |
7215 | case OFPACT_OUTPUT_REG: | |
7216 | case OFPACT_POP_QUEUE: | |
c2d936a4 BP |
7217 | case OFPACT_RESUBMIT: |
7218 | case OFPACT_SAMPLE: | |
7219 | case OFPACT_STACK_POP: | |
7220 | case OFPACT_STACK_PUSH: | |
d4abaff5 | 7221 | case OFPACT_DEBUG_RECIRC: |
c2d936a4 BP |
7222 | |
7223 | /* The action set may only include actions and thus | |
7224 | * may not include any instructions */ | |
7225 | case OFPACT_CLEAR_ACTIONS: | |
7226 | case OFPACT_GOTO_TABLE: | |
7227 | case OFPACT_METER: | |
7228 | case OFPACT_WRITE_ACTIONS: | |
7229 | case OFPACT_WRITE_METADATA: | |
7230 | return false; | |
7231 | default: | |
7232 | OVS_NOT_REACHED(); | |
7233 | } | |
f25d0cf3 BP |
7234 | } |
7235 | ||
c2d936a4 | 7236 | /* Append ofpact 'a' onto the tail of 'out' */ |
f25d0cf3 | 7237 | static void |
c2d936a4 | 7238 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) |
f25d0cf3 | 7239 | { |
c2d936a4 | 7240 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); |
f25d0cf3 BP |
7241 | } |
7242 | ||
c2d936a4 BP |
7243 | /* Copies the last ofpact whose type is 'filter' from 'in' to 'out'. */ |
7244 | static bool | |
7245 | ofpacts_copy_last(struct ofpbuf *out, const struct ofpbuf *in, | |
7246 | enum ofpact_type filter) | |
f25d0cf3 | 7247 | { |
c2d936a4 BP |
7248 | const struct ofpact *target; |
7249 | const struct ofpact *a; | |
f25d0cf3 | 7250 | |
c2d936a4 | 7251 | target = NULL; |
6fd6ed71 | 7252 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
7253 | if (a->type == filter) { |
7254 | target = a; | |
7255 | } | |
7256 | } | |
7257 | if (target) { | |
7258 | ofpact_copy(out, target); | |
f25d0cf3 | 7259 | } |
c2d936a4 | 7260 | return target != NULL; |
f25d0cf3 BP |
7261 | } |
7262 | ||
c2d936a4 BP |
7263 | /* Append all ofpacts, for which 'filter' returns true, from 'in' to 'out'. |
7264 | * The order of appended ofpacts is preserved between 'in' and 'out' */ | |
4cceacb9 | 7265 | static void |
c2d936a4 BP |
7266 | ofpacts_copy_all(struct ofpbuf *out, const struct ofpbuf *in, |
7267 | bool (*filter)(const struct ofpact *)) | |
4cceacb9 | 7268 | { |
c2d936a4 | 7269 | const struct ofpact *a; |
4cceacb9 | 7270 | |
6fd6ed71 | 7271 | OFPACT_FOR_EACH (a, in->data, in->size) { |
c2d936a4 BP |
7272 | if (filter(a)) { |
7273 | ofpact_copy(out, a); | |
7274 | } | |
7275 | } | |
4cceacb9 JS |
7276 | } |
7277 | ||
c2d936a4 BP |
7278 | /* Reads 'action_set', which contains ofpacts accumulated by |
7279 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
7280 | * executed directly into 'action_list'. (These names correspond to the | |
7281 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
7282 | * | |
7283 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 7284 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
7285 | * specification. |
7286 | * | |
7287 | * Exceptions: | |
7288 | * + output action is only appended if no group action was present in 'in'. | |
7289 | * + As a simplification all set actions are copied in the order the are | |
7290 | * provided in 'in' as many set actions applied to a field has the same | |
7291 | * affect as only applying the last action that sets a field and | |
7292 | * duplicates are removed by do_xlate_actions(). | |
7293 | * This has an unwanted side-effect of compsoting multiple | |
7294 | * LOAD_REG actions that touch different regions of the same field. */ | |
7295 | void | |
7296 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
7297 | const struct ofpbuf *action_set) | |
f25d0cf3 | 7298 | { |
c2d936a4 BP |
7299 | /* The OpenFlow spec "Action Set" section specifies this order. */ |
7300 | ofpacts_copy_last(action_list, action_set, OFPACT_STRIP_VLAN); | |
7301 | ofpacts_copy_last(action_list, action_set, OFPACT_POP_MPLS); | |
f839892a JS |
7302 | ofpacts_copy_last(action_list, action_set, OFPACT_DECAP); |
7303 | ofpacts_copy_last(action_list, action_set, OFPACT_ENCAP); | |
c2d936a4 BP |
7304 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_MPLS); |
7305 | ofpacts_copy_last(action_list, action_set, OFPACT_PUSH_VLAN); | |
7306 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_TTL); | |
7307 | ofpacts_copy_last(action_list, action_set, OFPACT_DEC_MPLS_TTL); | |
1b0ee636 | 7308 | ofpacts_copy_all(action_list, action_set, ofpact_is_set_or_move_action); |
c2d936a4 | 7309 | ofpacts_copy_last(action_list, action_set, OFPACT_SET_QUEUE); |
f25d0cf3 | 7310 | |
c2d936a4 BP |
7311 | /* If both OFPACT_GROUP and OFPACT_OUTPUT are present, OpenFlow says that |
7312 | * we should execute only OFPACT_GROUP. | |
7313 | * | |
7314 | * If neither OFPACT_GROUP nor OFPACT_OUTPUT is present, then we can drop | |
7315 | * all the actions because there's no point in modifying a packet that will | |
7316 | * not be sent anywhere. */ | |
7317 | if (!ofpacts_copy_last(action_list, action_set, OFPACT_GROUP) && | |
2e34a6a3 | 7318 | !ofpacts_copy_last(action_list, action_set, OFPACT_OUTPUT) && |
2c66ebe4 JR |
7319 | !ofpacts_copy_last(action_list, action_set, OFPACT_RESUBMIT) && |
7320 | !ofpacts_copy_last(action_list, action_set, OFPACT_CT)) { | |
c2d936a4 | 7321 | ofpbuf_clear(action_list); |
f25d0cf3 | 7322 | } |
f25d0cf3 BP |
7323 | } |
7324 | ||
f25d0cf3 | 7325 | |
c2d936a4 BP |
7326 | static enum ofperr |
7327 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
7328 | size_t n_in, enum ofp_version version, | |
04f48a68 | 7329 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7330 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 | 7331 | struct ofpbuf *out) |
c2d967a5 | 7332 | { |
c2d936a4 BP |
7333 | enum ofperr error; |
7334 | struct ofpact *a; | |
6fd6ed71 | 7335 | size_t start = out->size; |
c2d967a5 | 7336 | |
5c7c16d8 YHW |
7337 | error = ofpacts_decode(in, n_in, version, vl_mff_map, ofpacts_tlv_bitmap, |
7338 | out); | |
c2d967a5 | 7339 | |
c2d936a4 BP |
7340 | if (error) { |
7341 | return error; | |
7342 | } | |
7343 | ||
6fd6ed71 | 7344 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
7345 | if (!ofpact_is_allowed_in_actions_set(a)) { |
7346 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
7347 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
7348 | } |
7349 | } | |
c2d936a4 BP |
7350 | |
7351 | return 0; | |
c2d967a5 | 7352 | } |
c2d936a4 BP |
7353 | \f |
7354 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 7355 | |
c2d936a4 BP |
7356 | struct instruction_type_info { |
7357 | enum ovs_instruction_type type; | |
7358 | const char *name; | |
7359 | }; | |
7360 | ||
7361 | static const struct instruction_type_info inst_info[] = { | |
7362 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
7363 | OVS_INSTRUCTIONS | |
7364 | #undef DEFINE_INST | |
7365 | }; | |
7366 | ||
7367 | const char * | |
7368 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 7369 | { |
3b048d73 | 7370 | return type < ARRAY_SIZE(inst_info) ? inst_info[type].name : NULL; |
f25d0cf3 BP |
7371 | } |
7372 | ||
c2d936a4 BP |
7373 | int |
7374 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 7375 | { |
c2d936a4 BP |
7376 | const struct instruction_type_info *p; |
7377 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
7378 | if (!strcasecmp(name, p->name)) { | |
7379 | return p->type; | |
7380 | } | |
7381 | } | |
7382 | return -1; | |
29089a54 RL |
7383 | } |
7384 | ||
c2d936a4 BP |
7385 | enum ovs_instruction_type |
7386 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 7387 | { |
c2d936a4 BP |
7388 | switch (type) { |
7389 | case OFPACT_METER: | |
7390 | return OVSINST_OFPIT13_METER; | |
7391 | case OFPACT_CLEAR_ACTIONS: | |
7392 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
7393 | case OFPACT_WRITE_ACTIONS: | |
7394 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
7395 | case OFPACT_WRITE_METADATA: | |
7396 | return OVSINST_OFPIT11_WRITE_METADATA; | |
7397 | case OFPACT_GOTO_TABLE: | |
7398 | return OVSINST_OFPIT11_GOTO_TABLE; | |
7399 | case OFPACT_OUTPUT: | |
7400 | case OFPACT_GROUP: | |
7ae62a67 | 7401 | case OFPACT_CLONE: |
f25d0cf3 | 7402 | case OFPACT_CONTROLLER: |
c2d936a4 | 7403 | case OFPACT_ENQUEUE: |
f25d0cf3 | 7404 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7405 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 7406 | case OFPACT_BUNDLE: |
c2d936a4 BP |
7407 | case OFPACT_SET_VLAN_VID: |
7408 | case OFPACT_SET_VLAN_PCP: | |
7409 | case OFPACT_STRIP_VLAN: | |
7410 | case OFPACT_PUSH_VLAN: | |
7411 | case OFPACT_SET_ETH_SRC: | |
7412 | case OFPACT_SET_ETH_DST: | |
7413 | case OFPACT_SET_IPV4_SRC: | |
7414 | case OFPACT_SET_IPV4_DST: | |
7415 | case OFPACT_SET_IP_DSCP: | |
7416 | case OFPACT_SET_IP_ECN: | |
7417 | case OFPACT_SET_IP_TTL: | |
7418 | case OFPACT_SET_L4_SRC_PORT: | |
7419 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 7420 | case OFPACT_REG_MOVE: |
c2d936a4 | 7421 | case OFPACT_SET_FIELD: |
bd85dac1 | 7422 | case OFPACT_STACK_PUSH: |
bd85dac1 | 7423 | case OFPACT_STACK_POP: |
f25d0cf3 | 7424 | case OFPACT_DEC_TTL: |
097d4939 | 7425 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 7426 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 7427 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7428 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
7429 | case OFPACT_PUSH_MPLS: |
7430 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 7431 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
7432 | case OFPACT_SET_QUEUE: |
7433 | case OFPACT_POP_QUEUE: | |
7434 | case OFPACT_FIN_TIMEOUT: | |
7435 | case OFPACT_RESUBMIT: | |
7436 | case OFPACT_LEARN: | |
18080541 | 7437 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7438 | case OFPACT_MULTIPATH: |
7439 | case OFPACT_NOTE: | |
7440 | case OFPACT_EXIT: | |
e672ff9b | 7441 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 7442 | case OFPACT_SAMPLE: |
d4abaff5 | 7443 | case OFPACT_DEBUG_RECIRC: |
07659514 | 7444 | case OFPACT_CT: |
72fe7578 | 7445 | case OFPACT_CT_CLEAR: |
9ac0aada | 7446 | case OFPACT_NAT: |
f839892a JS |
7447 | case OFPACT_ENCAP: |
7448 | case OFPACT_DECAP: | |
c2d936a4 BP |
7449 | default: |
7450 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
7451 | } | |
7452 | } | |
7453 | ||
7454 | enum ofperr | |
7455 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
7456 | const uint16_t inst_type) | |
7457 | { | |
7458 | switch (inst_type) { | |
7459 | ||
7460 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
7461 | case ENUM: \ | |
7462 | *instruction_type = OVSINST_##ENUM; \ | |
7463 | return 0; | |
7464 | OVS_INSTRUCTIONS | |
7465 | #undef DEFINE_INST | |
7466 | ||
7467 | default: | |
7468 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
7469 | } | |
7470 | } | |
7471 | ||
7472 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
7473 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
7474 | struct ovsinst_map { | |
7475 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
7476 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
7477 | }; | |
7478 | ||
7479 | static const struct ovsinst_map * | |
7480 | get_ovsinst_map(enum ofp_version version) | |
7481 | { | |
7482 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
7483 | static const struct ovsinst_map of11[] = { | |
7484 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7485 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7486 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7487 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7488 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7489 | { 0, -1 }, | |
7490 | }; | |
f25d0cf3 | 7491 | |
c2d936a4 BP |
7492 | /* OpenFlow 1.3+ instructions. */ |
7493 | static const struct ovsinst_map of13[] = { | |
7494 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7495 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7496 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7497 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7498 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7499 | { OVSINST_OFPIT13_METER, 6 }, | |
7500 | { 0, -1 }, | |
7501 | }; | |
4cceacb9 | 7502 | |
c2d936a4 BP |
7503 | return version < OFP13_VERSION ? of11 : of13; |
7504 | } | |
f25d0cf3 | 7505 | |
c2d936a4 BP |
7506 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
7507 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
7508 | * (OFP11_VERSION or later), and returns the result. */ | |
7509 | ovs_be32 | |
7510 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
7511 | { | |
7512 | uint32_t ofpit_bitmap = 0; | |
7513 | const struct ovsinst_map *x; | |
f25d0cf3 | 7514 | |
c2d936a4 BP |
7515 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7516 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
7517 | ofpit_bitmap |= 1u << x->ofpit; | |
7518 | } | |
7519 | } | |
7520 | return htonl(ofpit_bitmap); | |
7521 | } | |
f25d0cf3 | 7522 | |
c2d936a4 BP |
7523 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
7524 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
7525 | * correspond to OVSINST_* values, and returns the result. */ | |
7526 | uint32_t | |
7527 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
7528 | { | |
7529 | uint32_t ovsinst_bitmap = 0; | |
7530 | const struct ovsinst_map *x; | |
f25d0cf3 | 7531 | |
c2d936a4 BP |
7532 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7533 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
7534 | ovsinst_bitmap |= 1u << x->ovsinst; | |
7535 | } | |
7536 | } | |
7537 | return ovsinst_bitmap; | |
7538 | } | |
f25d0cf3 | 7539 | |
c2d936a4 BP |
7540 | static inline struct ofp11_instruction * |
7541 | instruction_next(const struct ofp11_instruction *inst) | |
7542 | { | |
7543 | return ((struct ofp11_instruction *) (void *) | |
7544 | ((uint8_t *) inst + ntohs(inst->len))); | |
7545 | } | |
f25d0cf3 | 7546 | |
c2d936a4 BP |
7547 | static inline bool |
7548 | instruction_is_valid(const struct ofp11_instruction *inst, | |
7549 | size_t n_instructions) | |
7550 | { | |
7551 | uint16_t len = ntohs(inst->len); | |
7552 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
7553 | && len >= sizeof *inst | |
7554 | && len / sizeof *inst <= n_instructions); | |
7555 | } | |
f25d0cf3 | 7556 | |
c2d936a4 BP |
7557 | /* This macro is careful to check for instructions with bad lengths. */ |
7558 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
7559 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
7560 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
7561 | ((LEFT) -= (ntohs((ITER)->len) \ | |
7562 | / sizeof(struct ofp11_instruction)), \ | |
7563 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 7564 | |
c2d936a4 BP |
7565 | static enum ofperr |
7566 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
7567 | enum ovs_instruction_type *type) | |
7568 | { | |
7569 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 7570 | |
c2d936a4 BP |
7571 | switch (inst->type) { |
7572 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
7573 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 7574 | |
c2d936a4 BP |
7575 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
7576 | case CONSTANT_HTONS(ENUM): \ | |
7577 | if (EXTENSIBLE \ | |
7578 | ? len >= sizeof(struct STRUCT) \ | |
7579 | : len == sizeof(struct STRUCT)) { \ | |
7580 | *type = OVSINST_##ENUM; \ | |
7581 | return 0; \ | |
7582 | } else { \ | |
7583 | return OFPERR_OFPBIC_BAD_LEN; \ | |
7584 | } | |
7585 | OVS_INSTRUCTIONS | |
7586 | #undef DEFINE_INST | |
29089a54 | 7587 | |
c2d936a4 BP |
7588 | default: |
7589 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
7590 | } |
7591 | } | |
f25d0cf3 | 7592 | |
c2d936a4 BP |
7593 | static enum ofperr |
7594 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
7595 | size_t n_insts, | |
7596 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 7597 | { |
c2d936a4 BP |
7598 | const struct ofp11_instruction *inst; |
7599 | size_t left; | |
f25d0cf3 | 7600 | |
c2d936a4 BP |
7601 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
7602 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
7603 | enum ovs_instruction_type type; | |
7604 | enum ofperr error; | |
f25d0cf3 | 7605 | |
c2d936a4 BP |
7606 | error = decode_openflow11_instruction(inst, &type); |
7607 | if (error) { | |
7608 | return error; | |
7609 | } | |
f25d0cf3 | 7610 | |
c2d936a4 BP |
7611 | if (out[type]) { |
7612 | return OFPERR_OFPBIC_DUP_INST; | |
7613 | } | |
7614 | out[type] = inst; | |
7615 | } | |
7616 | ||
7617 | if (left) { | |
7618 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
7619 | (n_insts - left) * sizeof *inst); | |
7620 | return OFPERR_OFPBIC_BAD_LEN; | |
7621 | } | |
7622 | return 0; | |
f25d0cf3 BP |
7623 | } |
7624 | ||
7625 | static void | |
c2d936a4 BP |
7626 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
7627 | const struct ofp_action_header **actions, | |
7628 | size_t *actions_len) | |
f25d0cf3 | 7629 | { |
c2d936a4 BP |
7630 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
7631 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
7632 | } | |
f25d0cf3 | 7633 | |
c2d936a4 BP |
7634 | enum ofperr |
7635 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
7636 | unsigned int instructions_len, | |
7637 | enum ofp_version version, | |
04f48a68 | 7638 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7639 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
7640 | struct ofpbuf *ofpacts) |
7641 | { | |
7642 | const struct ofp11_instruction *instructions; | |
7643 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
7644 | enum ofperr error; | |
f25d0cf3 | 7645 | |
9abca1e5 | 7646 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
7647 | if (version == OFP10_VERSION) { |
7648 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
7649 | version, | |
7650 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
5c7c16d8 YHW |
7651 | ofpacts, 0, vl_mff_map, |
7652 | ofpacts_tlv_bitmap); | |
c2d936a4 | 7653 | } |
f25d0cf3 | 7654 | |
c2d936a4 BP |
7655 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
7656 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
7657 | "multiple of %d", | |
7658 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
7659 | error = OFPERR_OFPBIC_BAD_LEN; | |
7660 | goto exit; | |
7661 | } | |
f25d0cf3 | 7662 | |
c2d936a4 BP |
7663 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
7664 | if (instructions == NULL) { | |
7665 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
7666 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 7667 | instructions_len, openflow->size); |
c2d936a4 BP |
7668 | error = OFPERR_OFPBIC_BAD_LEN; |
7669 | goto exit; | |
7670 | } | |
f25d0cf3 | 7671 | |
c2d936a4 BP |
7672 | error = decode_openflow11_instructions( |
7673 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
7674 | insts); | |
7675 | if (error) { | |
7676 | goto exit; | |
7677 | } | |
f25d0cf3 | 7678 | |
c2d936a4 BP |
7679 | if (insts[OVSINST_OFPIT13_METER]) { |
7680 | const struct ofp13_instruction_meter *oim; | |
7681 | struct ofpact_meter *om; | |
f25d0cf3 | 7682 | |
c2d936a4 BP |
7683 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
7684 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 7685 | |
c2d936a4 BP |
7686 | om = ofpact_put_METER(ofpacts); |
7687 | om->meter_id = ntohl(oim->meter_id); | |
076caa2f | 7688 | om->provider_meter_id = UINT32_MAX; /* No provider meter ID. */ |
c2d936a4 BP |
7689 | } |
7690 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
7691 | const struct ofp_action_header *actions; | |
7692 | size_t actions_len; | |
f25d0cf3 | 7693 | |
c2d936a4 BP |
7694 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
7695 | &actions, &actions_len); | |
04f48a68 | 7696 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
5c7c16d8 | 7697 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
7698 | if (error) { |
7699 | goto exit; | |
7700 | } | |
7701 | } | |
7702 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
7703 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
7704 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
7705 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
7706 | } | |
7707 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
7708 | struct ofpact_nest *on; | |
7709 | const struct ofp_action_header *actions; | |
7710 | size_t actions_len; | |
2bd318de | 7711 | size_t start = ofpacts->size; |
255a54ea BP |
7712 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
7713 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
7714 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
7715 | &actions, &actions_len); | |
7716 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
5c7c16d8 YHW |
7717 | version, vl_mff_map, |
7718 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 BP |
7719 | if (error) { |
7720 | goto exit; | |
7721 | } | |
7722 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 7723 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
7724 | } |
7725 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
7726 | const struct ofp11_instruction_write_metadata *oiwm; | |
7727 | struct ofpact_metadata *om; | |
ca287d20 | 7728 | |
c2d936a4 BP |
7729 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
7730 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 7731 | |
c2d936a4 BP |
7732 | om = ofpact_put_WRITE_METADATA(ofpacts); |
7733 | om->metadata = oiwm->metadata; | |
7734 | om->mask = oiwm->metadata_mask; | |
7735 | } | |
7736 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
7737 | const struct ofp11_instruction_goto_table *oigt; | |
7738 | struct ofpact_goto_table *ogt; | |
7395c052 | 7739 | |
c2d936a4 BP |
7740 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
7741 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
7742 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
7743 | ogt->table_id = oigt->table_id; | |
7744 | } | |
e3f8f887 | 7745 | |
6fd6ed71 | 7746 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 7747 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
7748 | exit: |
7749 | if (error) { | |
7750 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 7751 | } |
c2d936a4 | 7752 | return error; |
f25d0cf3 | 7753 | } |
d01c980f | 7754 | |
c2d936a4 BP |
7755 | /* Update the length of the instruction that begins at offset 'ofs' within |
7756 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
7757 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 7758 | static void |
c2d936a4 | 7759 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 7760 | { |
c2d936a4 | 7761 | struct ofp11_instruction_actions *oia; |
d01c980f | 7762 | |
c2d936a4 | 7763 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
7764 | if (openflow->size > ofs + sizeof *oia) { |
7765 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 7766 | } else { |
6fd6ed71 | 7767 | openflow->size = ofs; |
c2d936a4 | 7768 | } |
d01c980f | 7769 | } |
c2d936a4 BP |
7770 | \f |
7771 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
7772 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
7773 | * valid, otherwise an OpenFlow error code. */ | |
7774 | enum ofperr | |
7775 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 7776 | { |
c2d936a4 BP |
7777 | switch (port) { |
7778 | case OFPP_IN_PORT: | |
7779 | case OFPP_TABLE: | |
7780 | case OFPP_NORMAL: | |
7781 | case OFPP_FLOOD: | |
7782 | case OFPP_ALL: | |
7783 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
7784 | case OFPP_LOCAL: |
7785 | return 0; | |
7786 | ||
13d2c689 BP |
7787 | case OFPP_NONE: |
7788 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7789 | ||
c2d936a4 BP |
7790 | default: |
7791 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
7792 | return 0; | |
7793 | } | |
7794 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
7795 | } |
7796 | } | |
7797 | ||
c2d936a4 BP |
7798 | /* Removes the protocols that require consistency between match and actions |
7799 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
7800 | * | |
7801 | * (An example of an inconsistency between match and actions is a flow that | |
7802 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
7803 | * label.) */ | |
d01c980f | 7804 | static void |
c2d936a4 BP |
7805 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
7806 | { | |
7807 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
7808 | } | |
7809 | ||
f839892a JS |
7810 | /* May modify flow->packet_type, flow->dl_type, flow->nw_proto and |
7811 | * flow->vlan_tci, caller must restore them. | |
c2d936a4 BP |
7812 | * |
7813 | * Modifies some actions, filling in fields that could not be properly set | |
7814 | * without context. */ | |
7815 | static enum ofperr | |
7816 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, | |
67210a55 | 7817 | struct match *match, ofp_port_t max_ports, |
c2d936a4 | 7818 | uint8_t table_id, uint8_t n_tables) |
d01c980f | 7819 | { |
67210a55 | 7820 | struct flow *flow = &match->flow; |
c2d936a4 BP |
7821 | const struct ofpact_enqueue *enqueue; |
7822 | const struct mf_field *mf; | |
f839892a | 7823 | ovs_be16 dl_type = get_dl_type(flow); |
c2d936a4 | 7824 | |
d01c980f BP |
7825 | switch (a->type) { |
7826 | case OFPACT_OUTPUT: | |
c2d936a4 BP |
7827 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
7828 | max_ports); | |
7829 | ||
7830 | case OFPACT_CONTROLLER: | |
7831 | return 0; | |
d01c980f BP |
7832 | |
7833 | case OFPACT_ENQUEUE: | |
c2d936a4 BP |
7834 | enqueue = ofpact_get_ENQUEUE(a); |
7835 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) | |
7836 | && enqueue->port != OFPP_IN_PORT | |
7837 | && enqueue->port != OFPP_LOCAL) { | |
7838 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7839 | } | |
7840 | return 0; | |
7841 | ||
7842 | case OFPACT_OUTPUT_REG: | |
67210a55 | 7843 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, match); |
c2d936a4 | 7844 | |
aaca4fe0 WT |
7845 | case OFPACT_OUTPUT_TRUNC: |
7846 | return ofpact_check_output_port(ofpact_get_OUTPUT_TRUNC(a)->port, | |
7847 | max_ports); | |
7848 | ||
c2d936a4 | 7849 | case OFPACT_BUNDLE: |
67210a55 | 7850 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, match); |
d01c980f BP |
7851 | |
7852 | case OFPACT_SET_VLAN_VID: | |
c2d936a4 BP |
7853 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7854 | * OpenFlow 1.1+ if need be. */ | |
7855 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
f0fb825a EG |
7856 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
7857 | if (!(flow->vlans[0].tci & htons(VLAN_CFI)) && | |
c2d936a4 BP |
7858 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { |
7859 | inconsistent_match(usable_protocols); | |
7860 | } | |
7861 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a | 7862 | flow->vlans[0].tci |= htons(VLAN_CFI); |
c2d936a4 | 7863 | return 0; |
d01c980f BP |
7864 | |
7865 | case OFPACT_SET_VLAN_PCP: | |
c2d936a4 BP |
7866 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7867 | * OpenFlow 1.1+ if need be. */ | |
7868 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
f0fb825a EG |
7869 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
7870 | if (!(flow->vlans[0].tci & htons(VLAN_CFI)) && | |
c2d936a4 BP |
7871 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { |
7872 | inconsistent_match(usable_protocols); | |
7873 | } | |
7874 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a | 7875 | flow->vlans[0].tci |= htons(VLAN_CFI); |
c2d936a4 | 7876 | return 0; |
d01c980f BP |
7877 | |
7878 | case OFPACT_STRIP_VLAN: | |
f0fb825a | 7879 | if (!(flow->vlans[0].tci & htons(VLAN_CFI))) { |
c2d936a4 BP |
7880 | inconsistent_match(usable_protocols); |
7881 | } | |
f0fb825a | 7882 | flow_pop_vlan(flow, NULL); |
c2d936a4 | 7883 | return 0; |
d01c980f | 7884 | |
3e34fbdd | 7885 | case OFPACT_PUSH_VLAN: |
f0fb825a EG |
7886 | if (flow->vlans[FLOW_MAX_VLAN_HEADERS - 1].tci & htons(VLAN_CFI)) { |
7887 | /* Support maximum (FLOW_MAX_VLAN_HEADERS) VLAN headers. */ | |
c2d936a4 BP |
7888 | return OFPERR_OFPBAC_BAD_TAG; |
7889 | } | |
7890 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a EG |
7891 | flow_push_vlan_uninit(flow, NULL); |
7892 | flow->vlans[0].tci |= htons(VLAN_CFI); | |
c2d936a4 | 7893 | return 0; |
276c4e7a | 7894 | |
d01c980f | 7895 | case OFPACT_SET_ETH_SRC: |
d01c980f | 7896 | case OFPACT_SET_ETH_DST: |
c2d936a4 | 7897 | return 0; |
d01c980f BP |
7898 | |
7899 | case OFPACT_SET_IPV4_SRC: | |
d01c980f | 7900 | case OFPACT_SET_IPV4_DST: |
f839892a | 7901 | if (dl_type != htons(ETH_TYPE_IP)) { |
c2d936a4 BP |
7902 | inconsistent_match(usable_protocols); |
7903 | } | |
7904 | return 0; | |
d01c980f | 7905 | |
04f01c24 | 7906 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7907 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7908 | case OFPACT_SET_IP_TTL: |
7bcb1506 | 7909 | case OFPACT_DEC_TTL: |
c2d936a4 BP |
7910 | if (!is_ip_any(flow)) { |
7911 | inconsistent_match(usable_protocols); | |
7912 | } | |
7913 | return 0; | |
b02475c5 | 7914 | |
c2d936a4 | 7915 | case OFPACT_SET_L4_SRC_PORT: |
c2d936a4 | 7916 | case OFPACT_SET_L4_DST_PORT: |
b8778a0d | 7917 | if (!is_ip_any(flow) || (flow->nw_frag & FLOW_NW_FRAG_LATER) || |
c2d936a4 BP |
7918 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP |
7919 | && flow->nw_proto != IPPROTO_SCTP)) { | |
7920 | inconsistent_match(usable_protocols); | |
7921 | } | |
7922 | /* Note on which transport protocol the port numbers are set. | |
7923 | * This allows this set action to be converted to an OF1.2 set field | |
7924 | * action. */ | |
b8778a0d JR |
7925 | if (a->type == OFPACT_SET_L4_SRC_PORT) { |
7926 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7927 | } else { | |
7928 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7929 | } | |
c2d936a4 | 7930 | return 0; |
b02475c5 | 7931 | |
c2d936a4 | 7932 | case OFPACT_REG_MOVE: |
67210a55 | 7933 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), match); |
8dd54666 | 7934 | |
e3f8f887 | 7935 | case OFPACT_SET_FIELD: |
c2d936a4 BP |
7936 | mf = ofpact_get_SET_FIELD(a)->field; |
7937 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
aff49b8c | 7938 | if (!mf_are_prereqs_ok(mf, flow, NULL) || |
f0fb825a EG |
7939 | (mf->id == MFF_VLAN_VID && |
7940 | !(flow->vlans[0].tci & htons(VLAN_CFI)))) { | |
5bcd4754 | 7941 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisites", |
c2d936a4 BP |
7942 | mf->name); |
7943 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7944 | } | |
7945 | /* Remember if we saw a vlan tag in the flow to aid translating to | |
7946 | * OpenFlow 1.1 if need be. */ | |
7947 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
f0fb825a | 7948 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
c2d936a4 BP |
7949 | if (mf->id == MFF_VLAN_TCI) { |
7950 | /* The set field may add or remove the vlan tag, | |
7951 | * Mark the status temporarily. */ | |
f0fb825a | 7952 | flow->vlans[0].tci = ofpact_get_SET_FIELD(a)->value->be16; |
c2d936a4 BP |
7953 | } |
7954 | return 0; | |
e3f8f887 | 7955 | |
bd85dac1 | 7956 | case OFPACT_STACK_PUSH: |
67210a55 | 7957 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), match); |
c2d936a4 | 7958 | |
bd85dac1 | 7959 | case OFPACT_STACK_POP: |
67210a55 | 7960 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), match); |
c2d936a4 BP |
7961 | |
7962 | case OFPACT_SET_MPLS_LABEL: | |
7963 | case OFPACT_SET_MPLS_TC: | |
7964 | case OFPACT_SET_MPLS_TTL: | |
7965 | case OFPACT_DEC_MPLS_TTL: | |
f839892a | 7966 | if (!eth_type_mpls(dl_type)) { |
c2d936a4 BP |
7967 | inconsistent_match(usable_protocols); |
7968 | } | |
7969 | return 0; | |
7970 | ||
d01c980f | 7971 | case OFPACT_SET_TUNNEL: |
c2d936a4 | 7972 | case OFPACT_SET_QUEUE: |
d01c980f | 7973 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7974 | return 0; |
7975 | ||
2cd20955 JR |
7976 | case OFPACT_RESUBMIT: { |
7977 | struct ofpact_resubmit *resubmit = ofpact_get_RESUBMIT(a); | |
7978 | ||
7979 | if (resubmit->with_ct_orig && !is_ct_valid(flow, &match->wc, NULL)) { | |
7980 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7981 | } | |
7982 | return 0; | |
7983 | } | |
c2d936a4 BP |
7984 | case OFPACT_FIN_TIMEOUT: |
7985 | if (flow->nw_proto != IPPROTO_TCP) { | |
7986 | inconsistent_match(usable_protocols); | |
7987 | } | |
7988 | return 0; | |
7989 | ||
d01c980f | 7990 | case OFPACT_LEARN: |
67210a55 | 7991 | return learn_check(ofpact_get_LEARN(a), match); |
c2d936a4 | 7992 | |
18080541 BP |
7993 | case OFPACT_CONJUNCTION: |
7994 | return 0; | |
7995 | ||
d01c980f | 7996 | case OFPACT_MULTIPATH: |
67210a55 | 7997 | return multipath_check(ofpact_get_MULTIPATH(a), match); |
c2d936a4 | 7998 | |
d01c980f BP |
7999 | case OFPACT_NOTE: |
8000 | case OFPACT_EXIT: | |
c2d936a4 | 8001 | return 0; |
d01c980f | 8002 | |
c2d936a4 | 8003 | case OFPACT_PUSH_MPLS: |
f839892a JS |
8004 | if (flow->packet_type != htonl(PT_ETH)) { |
8005 | inconsistent_match(usable_protocols); | |
8006 | } | |
c2d936a4 BP |
8007 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; |
8008 | /* The packet is now MPLS and the MPLS payload is opaque. | |
8009 | * Thus nothing can be assumed about the network protocol. | |
8010 | * Temporarily mark that we have no nw_proto. */ | |
8011 | flow->nw_proto = 0; | |
8012 | return 0; | |
1e7db674 | 8013 | |
c2d936a4 | 8014 | case OFPACT_POP_MPLS: |
f839892a JS |
8015 | if (flow->packet_type != htonl(PT_ETH) |
8016 | || !eth_type_mpls(dl_type)) { | |
c2d936a4 BP |
8017 | inconsistent_match(usable_protocols); |
8018 | } | |
8019 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
8020 | return 0; | |
1e7db674 | 8021 | |
c2d936a4 BP |
8022 | case OFPACT_SAMPLE: |
8023 | return 0; | |
1e7db674 | 8024 | |
7ae62a67 WT |
8025 | case OFPACT_CLONE: { |
8026 | struct ofpact_nest *on = ofpact_get_CLONE(a); | |
8027 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
67210a55 | 8028 | match, max_ports, table_id, n_tables, |
7ae62a67 WT |
8029 | usable_protocols); |
8030 | } | |
8031 | ||
07659514 JS |
8032 | case OFPACT_CT: { |
8033 | struct ofpact_conntrack *oc = ofpact_get_CT(a); | |
8034 | ||
f839892a | 8035 | if (!dl_type_is_ip_any(dl_type) |
8b6d097c | 8036 | || (flow->ct_state & CS_INVALID && oc->flags & NX_CT_F_COMMIT) |
40c7b2fc JS |
8037 | || (oc->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) |
8038 | || (oc->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
ed26e3ea JR |
8039 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions |
8040 | * be silently discarded. Instead, datapath flow install fails, so | |
8041 | * it is better to flag inconsistent CT actions as hard errors. */ | |
8042 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
07659514 JS |
8043 | } |
8044 | ||
8045 | if (oc->zone_src.field) { | |
67210a55 | 8046 | return mf_check_src(&oc->zone_src, match); |
07659514 | 8047 | } |
8e53fe8c | 8048 | |
9f02d70c | 8049 | return ofpacts_check(oc->actions, ofpact_ct_get_action_len(oc), |
67210a55 | 8050 | match, max_ports, table_id, n_tables, |
9f02d70c | 8051 | usable_protocols); |
07659514 JS |
8052 | } |
8053 | ||
72fe7578 BP |
8054 | case OFPACT_CT_CLEAR: |
8055 | return 0; | |
8056 | ||
9ac0aada JR |
8057 | case OFPACT_NAT: { |
8058 | struct ofpact_nat *on = ofpact_get_NAT(a); | |
8059 | ||
f839892a JS |
8060 | if (!dl_type_is_ip_any(dl_type) || |
8061 | (on->range_af == AF_INET && dl_type != htons(ETH_TYPE_IP)) || | |
9ac0aada | 8062 | (on->range_af == AF_INET6 |
f839892a | 8063 | && dl_type != htons(ETH_TYPE_IPV6))) { |
ed26e3ea | 8064 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
9ac0aada JR |
8065 | } |
8066 | return 0; | |
8067 | } | |
8068 | ||
c2d936a4 BP |
8069 | case OFPACT_CLEAR_ACTIONS: |
8070 | return 0; | |
1e7db674 | 8071 | |
c2d936a4 BP |
8072 | case OFPACT_WRITE_ACTIONS: { |
8073 | /* Use a temporary copy of 'usable_protocols' because we can't check | |
8074 | * consistency of an action set. */ | |
8075 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
8076 | enum ofputil_protocol p = *usable_protocols; | |
8077 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
67210a55 | 8078 | match, max_ports, table_id, n_tables, &p); |
c2d936a4 | 8079 | } |
1e7db674 | 8080 | |
c2d936a4 BP |
8081 | case OFPACT_WRITE_METADATA: |
8082 | return 0; | |
1e7db674 | 8083 | |
c2d936a4 BP |
8084 | case OFPACT_METER: { |
8085 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
8086 | if (mid == 0 || mid > OFPM13_MAX) { | |
8087 | return OFPERR_OFPMMFC_INVALID_METER; | |
8088 | } | |
8089 | return 0; | |
8090 | } | |
1e7db674 | 8091 | |
c2d936a4 BP |
8092 | case OFPACT_GOTO_TABLE: { |
8093 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
8094 | if ((table_id != 255 && goto_table <= table_id) | |
8095 | || (n_tables != 255 && goto_table >= n_tables)) { | |
8c87971e | 8096 | return OFPERR_OFPBIC_BAD_TABLE_ID; |
c2d936a4 BP |
8097 | } |
8098 | return 0; | |
8099 | } | |
1e7db674 | 8100 | |
c2d936a4 BP |
8101 | case OFPACT_GROUP: |
8102 | return 0; | |
1e7db674 | 8103 | |
e672ff9b JR |
8104 | case OFPACT_UNROLL_XLATE: |
8105 | /* UNROLL is an internal action that should never be seen via | |
8106 | * OpenFlow. */ | |
8107 | return OFPERR_OFPBAC_BAD_TYPE; | |
8108 | ||
d4abaff5 BP |
8109 | case OFPACT_DEBUG_RECIRC: |
8110 | return 0; | |
8111 | ||
f839892a JS |
8112 | case OFPACT_ENCAP: |
8113 | flow->packet_type = ofpact_get_ENCAP(a)->new_pkt_type; | |
8114 | if (pt_ns(flow->packet_type) == OFPHTN_ETHERTYPE) { | |
8115 | flow->dl_type = htons(pt_ns_type(flow->packet_type)); | |
8116 | } | |
8117 | if (!is_ip_any(flow)) { | |
8118 | flow->nw_proto = 0; | |
8119 | } | |
8120 | return 0; | |
8121 | ||
8122 | case OFPACT_DECAP: | |
8123 | if (flow->packet_type == htonl(PT_ETH)) { | |
8124 | /* Adjust the packet_type to allow subsequent actions. */ | |
8125 | flow->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
8126 | ntohs(flow->dl_type)); | |
8127 | } else { | |
8128 | /* The actual packet_type is only known after decapsulation. | |
8129 | * Do not allow subsequent actions that depend on packet headers. */ | |
8130 | flow->packet_type = htonl(PT_UNKNOWN); | |
8131 | flow->dl_type = OVS_BE16_MAX; | |
8132 | } | |
8133 | return 0; | |
8134 | ||
c2d936a4 BP |
8135 | default: |
8136 | OVS_NOT_REACHED(); | |
8137 | } | |
8138 | } | |
1e7db674 | 8139 | |
c2d936a4 BP |
8140 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
8141 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
8142 | * switch with no more than 'max_ports' ports. | |
8143 | * | |
8144 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
8145 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
8146 | * example of an inconsistency between match and actions is a flow that does | |
8147 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
8148 | * | |
67210a55 | 8149 | * May annotate ofpacts with information gathered from the 'match'. |
c2d936a4 | 8150 | * |
67210a55 JR |
8151 | * May temporarily modify 'match', but restores the changes before |
8152 | * returning. */ | |
c2d936a4 BP |
8153 | enum ofperr |
8154 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
67210a55 | 8155 | struct match *match, ofp_port_t max_ports, |
c2d936a4 BP |
8156 | uint8_t table_id, uint8_t n_tables, |
8157 | enum ofputil_protocol *usable_protocols) | |
8158 | { | |
8159 | struct ofpact *a; | |
f839892a | 8160 | ovs_be32 packet_type = match->flow.packet_type; |
67210a55 | 8161 | ovs_be16 dl_type = match->flow.dl_type; |
67210a55 | 8162 | uint8_t nw_proto = match->flow.nw_proto; |
c2d936a4 | 8163 | enum ofperr error = 0; |
f0fb825a EG |
8164 | union flow_vlan_hdr vlans[FLOW_MAX_VLAN_HEADERS]; |
8165 | ||
8166 | memcpy(&vlans, &match->flow.vlans, sizeof(vlans)); | |
1e7db674 | 8167 | |
c2d936a4 | 8168 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
67210a55 | 8169 | error = ofpact_check__(usable_protocols, a, match, |
c2d936a4 BP |
8170 | max_ports, table_id, n_tables); |
8171 | if (error) { | |
1e7db674 | 8172 | break; |
c2d936a4 BP |
8173 | } |
8174 | } | |
8175 | /* Restore fields that may have been modified. */ | |
f839892a | 8176 | match->flow.packet_type = packet_type; |
67210a55 | 8177 | match->flow.dl_type = dl_type; |
f0fb825a | 8178 | memcpy(&match->flow.vlans, &vlans, sizeof(vlans)); |
67210a55 | 8179 | match->flow.nw_proto = nw_proto; |
c2d936a4 BP |
8180 | return error; |
8181 | } | |
1e7db674 | 8182 | |
c2d936a4 BP |
8183 | /* Like ofpacts_check(), but reports inconsistencies as |
8184 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
8185 | enum ofperr | |
8186 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
67210a55 | 8187 | struct match *match, ofp_port_t max_ports, |
c2d936a4 BP |
8188 | uint8_t table_id, uint8_t n_tables, |
8189 | enum ofputil_protocol usable_protocols) | |
8190 | { | |
8191 | enum ofputil_protocol p = usable_protocols; | |
8192 | enum ofperr error; | |
1e7db674 | 8193 | |
67210a55 | 8194 | error = ofpacts_check(ofpacts, ofpacts_len, match, max_ports, |
c2d936a4 BP |
8195 | table_id, n_tables, &p); |
8196 | return (error ? error | |
8197 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
8198 | : 0); | |
8199 | } | |
097d4939 | 8200 | |
28f5311f JS |
8201 | /* Returns the destination field that 'ofpact' would write to, or NULL |
8202 | * if the action would not write to an mf_field. */ | |
8203 | const struct mf_field * | |
8204 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 8205 | { |
28f5311f JS |
8206 | if (ofpact->type == OFPACT_SET_FIELD) { |
8207 | const struct ofpact_set_field *orl; | |
8e53fe8c | 8208 | |
28f5311f | 8209 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 8210 | return orl->field; |
28f5311f JS |
8211 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
8212 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 8213 | |
28f5311f | 8214 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
8215 | return orm->dst.field; |
8216 | } | |
8217 | ||
8218 | return NULL; | |
8219 | } | |
8220 | ||
8221 | static enum ofperr | |
8222 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
8223 | { | |
8224 | VLOG_WARN("%s action doesn't support nested action %s", | |
8225 | ofpact_name(outer_action), ofpact_name(action)); | |
8226 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8227 | } | |
8228 | ||
8229 | static bool | |
8230 | field_requires_ct(enum mf_field_id field) | |
8231 | { | |
9daf2348 | 8232 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
8233 | } |
8234 | ||
8235 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
8236 | static enum ofperr |
8237 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
8238 | { | |
28f5311f | 8239 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
8240 | |
8241 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
8242 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
8243 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8244 | } | |
9ac0aada JR |
8245 | if (a->type == OFPACT_NAT) { |
8246 | if (outer_action != OFPACT_CT) { | |
8247 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
8248 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8249 | } | |
8250 | return 0; | |
8251 | } | |
8e53fe8c JS |
8252 | |
8253 | if (outer_action) { | |
8254 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
8255 | || outer_action == OFPACT_CT); | |
8256 | ||
8257 | if (outer_action == OFPACT_CT) { | |
8258 | if (!field) { | |
8259 | return unsupported_nesting(a->type, outer_action); | |
8260 | } else if (!field_requires_ct(field->id)) { | |
8261 | VLOG_WARN("%s action doesn't support nested modification " | |
8262 | "of %s", ofpact_name(outer_action), field->name); | |
8263 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8264 | } | |
8265 | } | |
d824b5b7 JS |
8266 | } |
8267 | ||
8268 | return 0; | |
8269 | } | |
8270 | ||
18080541 BP |
8271 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
8272 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
8273 | * vSwitch. | |
8274 | * | |
8275 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
8276 | * instructions that are allowed within 'ofpacts[]'. |
8277 | * | |
8278 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
8279 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
8280 | static enum ofperr |
8281 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 8282 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
8283 | { |
8284 | const struct ofpact *a; | |
8285 | enum ovs_instruction_type inst; | |
097d4939 | 8286 | |
c2d936a4 BP |
8287 | inst = OVSINST_OFPIT13_METER; |
8288 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8289 | enum ovs_instruction_type next; | |
8e53fe8c | 8290 | enum ofperr error; |
1e7db674 | 8291 | |
18080541 BP |
8292 | if (a->type == OFPACT_CONJUNCTION) { |
8293 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
8294 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
8295 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
8296 | "\"note\" but not any other kind of action " | |
8297 | "(such as the \"%s\" action used here)", | |
96775a1c | 8298 | ofpact_name(a->type)); |
18080541 BP |
8299 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
8300 | } | |
8301 | } | |
8302 | return 0; | |
8303 | } | |
8304 | ||
8e53fe8c JS |
8305 | error = ofpacts_verify_nested(a, outer_action); |
8306 | if (error) { | |
8307 | return error; | |
d824b5b7 JS |
8308 | } |
8309 | ||
c2d936a4 BP |
8310 | next = ovs_instruction_type_from_ofpact_type(a->type); |
8311 | if (a > ofpacts | |
8312 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
8313 | ? next < inst | |
8314 | : next <= inst)) { | |
8315 | const char *name = ovs_instruction_name_from_type(inst); | |
8316 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8317 | |
c2d936a4 BP |
8318 | if (next == inst) { |
8319 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
8320 | "1.1+ compatibility", name); | |
8321 | } else { | |
8322 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
8323 | "before %s, for OpenFlow 1.1+ compatibility", | |
8324 | next_name, name); | |
8325 | } | |
8326 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
8327 | } | |
8328 | if (!((1u << next) & allowed_ovsinsts)) { | |
8329 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8330 | |
c2d936a4 BP |
8331 | VLOG_WARN("%s instruction not allowed here", name); |
8332 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 8333 | } |
c2d936a4 BP |
8334 | |
8335 | inst = next; | |
8336 | } | |
8337 | ||
8338 | return 0; | |
8339 | } | |
8340 | \f | |
8341 | /* Converting ofpacts to OpenFlow. */ | |
8342 | ||
8343 | static void | |
8344 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
8345 | struct ofpbuf *out) | |
8346 | { | |
8347 | switch (a->type) { | |
8348 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8349 | case OFPACT_##ENUM: \ | |
355ead69 GS |
8350 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
8351 | return; | |
c2d936a4 BP |
8352 | OFPACTS |
8353 | #undef OFPACT | |
8354 | default: | |
8355 | OVS_NOT_REACHED(); | |
1e7db674 | 8356 | } |
e3f8f887 JR |
8357 | } |
8358 | ||
8359 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
8360 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 8361 | * 'openflow'. */ |
a07c15bc | 8362 | size_t |
e3f8f887 JR |
8363 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
8364 | struct ofpbuf *openflow, | |
8365 | enum ofp_version ofp_version) | |
d01c980f BP |
8366 | { |
8367 | const struct ofpact *a; | |
6fd6ed71 | 8368 | size_t start_size = openflow->size; |
d01c980f BP |
8369 | |
8370 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 8371 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 8372 | } |
6fd6ed71 | 8373 | return openflow->size - start_size; |
d01c980f BP |
8374 | } |
8375 | ||
c2d936a4 BP |
8376 | static enum ovs_instruction_type |
8377 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 8378 | { |
c2d936a4 BP |
8379 | return (ovs_instruction_type_from_ofpact_type(a->type) |
8380 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 8381 | } |
8dd54666 IY |
8382 | |
8383 | void | |
e3f8f887 JR |
8384 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
8385 | size_t ofpacts_len, | |
8386 | struct ofpbuf *openflow, | |
8387 | enum ofp_version ofp_version) | |
8dd54666 | 8388 | { |
c2d936a4 | 8389 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
8390 | const struct ofpact *a; |
8391 | ||
8f2cded4 BP |
8392 | if (ofp_version == OFP10_VERSION) { |
8393 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
8394 | ofp_version); | |
8395 | return; | |
8396 | } | |
e3f8f887 | 8397 | |
c2d936a4 BP |
8398 | a = ofpacts; |
8399 | while (a < end) { | |
8400 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 8401 | size_t ofs = openflow->size; |
8dd54666 IY |
8402 | |
8403 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
8404 | do { |
8405 | encode_ofpact(a, ofp_version, openflow); | |
8406 | a = ofpact_next(a); | |
8407 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 8408 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
8409 | } else { |
8410 | encode_ofpact(a, ofp_version, openflow); | |
8411 | a = ofpact_next(a); | |
8dd54666 IY |
8412 | } |
8413 | } | |
8414 | } | |
d01c980f | 8415 | \f |
08d1e234 BP |
8416 | /* Sets of supported actions. */ |
8417 | ||
8418 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
8419 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
8420 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
8421 | * instance is specific to one OpenFlow version.) */ | |
8422 | struct ofpact_map { | |
8423 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
8424 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
8425 | }; | |
8426 | ||
8427 | static const struct ofpact_map * | |
8428 | get_ofpact_map(enum ofp_version version) | |
8429 | { | |
8430 | /* OpenFlow 1.0 actions. */ | |
8431 | static const struct ofpact_map of10[] = { | |
8432 | { OFPACT_OUTPUT, 0 }, | |
8433 | { OFPACT_SET_VLAN_VID, 1 }, | |
8434 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8435 | { OFPACT_STRIP_VLAN, 3 }, | |
8436 | { OFPACT_SET_ETH_SRC, 4 }, | |
8437 | { OFPACT_SET_ETH_DST, 5 }, | |
8438 | { OFPACT_SET_IPV4_SRC, 6 }, | |
8439 | { OFPACT_SET_IPV4_DST, 7 }, | |
8440 | { OFPACT_SET_IP_DSCP, 8 }, | |
8441 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8442 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8443 | { OFPACT_ENQUEUE, 11 }, | |
8444 | { 0, -1 }, | |
8445 | }; | |
8446 | ||
8447 | /* OpenFlow 1.1 actions. */ | |
8448 | static const struct ofpact_map of11[] = { | |
8449 | { OFPACT_OUTPUT, 0 }, | |
8450 | { OFPACT_SET_VLAN_VID, 1 }, | |
8451 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8452 | { OFPACT_SET_ETH_SRC, 3 }, | |
8453 | { OFPACT_SET_ETH_DST, 4 }, | |
8454 | { OFPACT_SET_IPV4_SRC, 5 }, | |
8455 | { OFPACT_SET_IPV4_DST, 6 }, | |
8456 | { OFPACT_SET_IP_DSCP, 7 }, | |
8457 | { OFPACT_SET_IP_ECN, 8 }, | |
8458 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8459 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8460 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8461 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8462 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
8463 | { OFPACT_SET_MPLS_TC, 14 }, | |
8464 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8465 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8466 | { OFPACT_PUSH_VLAN, 17 }, | |
8467 | { OFPACT_STRIP_VLAN, 18 }, | |
8468 | { OFPACT_PUSH_MPLS, 19 }, | |
8469 | { OFPACT_POP_MPLS, 20 }, | |
8470 | { OFPACT_SET_QUEUE, 21 }, | |
8471 | { OFPACT_GROUP, 22 }, | |
8472 | { OFPACT_SET_IP_TTL, 23 }, | |
8473 | { OFPACT_DEC_TTL, 24 }, | |
8474 | { 0, -1 }, | |
8475 | }; | |
8476 | ||
8477 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
8478 | static const struct ofpact_map of12[] = { | |
8479 | { OFPACT_OUTPUT, 0 }, | |
8480 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8481 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8482 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8483 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8484 | { OFPACT_PUSH_VLAN, 17 }, | |
8485 | { OFPACT_STRIP_VLAN, 18 }, | |
8486 | { OFPACT_PUSH_MPLS, 19 }, | |
8487 | { OFPACT_POP_MPLS, 20 }, | |
8488 | { OFPACT_SET_QUEUE, 21 }, | |
8489 | { OFPACT_GROUP, 22 }, | |
8490 | { OFPACT_SET_IP_TTL, 23 }, | |
8491 | { OFPACT_DEC_TTL, 24 }, | |
8492 | { OFPACT_SET_FIELD, 25 }, | |
8493 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
8494 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
8495 | { 0, -1 }, | |
8496 | }; | |
8497 | ||
8498 | switch (version) { | |
8499 | case OFP10_VERSION: | |
8500 | return of10; | |
8501 | ||
8502 | case OFP11_VERSION: | |
8503 | return of11; | |
8504 | ||
8505 | case OFP12_VERSION: | |
8506 | case OFP13_VERSION: | |
8507 | case OFP14_VERSION: | |
8508 | case OFP15_VERSION: | |
b79d45a1 | 8509 | case OFP16_VERSION: |
08d1e234 BP |
8510 | default: |
8511 | return of12; | |
8512 | } | |
8513 | } | |
8514 | ||
8515 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
8516 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
8517 | * returns the result. */ | |
8518 | ovs_be32 | |
8519 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
8520 | { | |
8521 | uint32_t openflow_bitmap = 0; | |
8522 | const struct ofpact_map *x; | |
8523 | ||
8524 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8525 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
8526 | openflow_bitmap |= 1u << x->ofpat; | |
8527 | } | |
8528 | } | |
8529 | return htonl(openflow_bitmap); | |
8530 | } | |
8531 | ||
8532 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
8533 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
8534 | * and returns the result. */ | |
8535 | uint64_t | |
8536 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
8537 | { | |
8538 | uint64_t ofpact_bitmap = 0; | |
8539 | const struct ofpact_map *x; | |
8540 | ||
8541 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8542 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
8543 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
8544 | } | |
8545 | } | |
8546 | return ofpact_bitmap; | |
8547 | } | |
8548 | ||
8549 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
8550 | * by 'ofpacts_bitmap'. */ | |
8551 | void | |
8552 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
8553 | { | |
8554 | if (!ofpacts_bitmap) { | |
8555 | ds_put_cstr(s, "<none>"); | |
8556 | } else { | |
8557 | while (ofpacts_bitmap) { | |
8558 | ds_put_format(s, "%s ", | |
8559 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
8560 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
8561 | } | |
8562 | ds_chomp(s, ' '); | |
8563 | } | |
8564 | } | |
8565 | \f | |
f25d0cf3 BP |
8566 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
8567 | static bool | |
4e022ec0 | 8568 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
8569 | { |
8570 | switch (ofpact->type) { | |
8571 | case OFPACT_OUTPUT: | |
8572 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
8573 | case OFPACT_ENQUEUE: | |
8574 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
8575 | case OFPACT_CONTROLLER: | |
8576 | return port == OFPP_CONTROLLER; | |
8577 | ||
8578 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 8579 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
8580 | case OFPACT_BUNDLE: |
8581 | case OFPACT_SET_VLAN_VID: | |
8582 | case OFPACT_SET_VLAN_PCP: | |
8583 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 8584 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
8585 | case OFPACT_SET_ETH_SRC: |
8586 | case OFPACT_SET_ETH_DST: | |
8587 | case OFPACT_SET_IPV4_SRC: | |
8588 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 8589 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 8590 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 8591 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
8592 | case OFPACT_SET_L4_SRC_PORT: |
8593 | case OFPACT_SET_L4_DST_PORT: | |
8594 | case OFPACT_REG_MOVE: | |
b2dd70be | 8595 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
8596 | case OFPACT_STACK_PUSH: |
8597 | case OFPACT_STACK_POP: | |
f25d0cf3 | 8598 | case OFPACT_DEC_TTL: |
097d4939 JR |
8599 | case OFPACT_SET_MPLS_LABEL: |
8600 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 8601 | case OFPACT_SET_MPLS_TTL: |
b676167a | 8602 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 8603 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 8604 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
8605 | case OFPACT_SET_QUEUE: |
8606 | case OFPACT_POP_QUEUE: | |
8607 | case OFPACT_FIN_TIMEOUT: | |
8608 | case OFPACT_RESUBMIT: | |
8609 | case OFPACT_LEARN: | |
18080541 | 8610 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 8611 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
8612 | case OFPACT_NOTE: |
8613 | case OFPACT_EXIT: | |
e672ff9b | 8614 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
8615 | case OFPACT_PUSH_MPLS: |
8616 | case OFPACT_POP_MPLS: | |
29089a54 | 8617 | case OFPACT_SAMPLE: |
b19e8793 | 8618 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 8619 | case OFPACT_CLONE: |
7fdb60a7 | 8620 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 8621 | case OFPACT_GOTO_TABLE: |
638a19b0 | 8622 | case OFPACT_METER: |
7395c052 | 8623 | case OFPACT_GROUP: |
d4abaff5 | 8624 | case OFPACT_DEBUG_RECIRC: |
07659514 | 8625 | case OFPACT_CT: |
72fe7578 | 8626 | case OFPACT_CT_CLEAR: |
9ac0aada | 8627 | case OFPACT_NAT: |
f839892a JS |
8628 | case OFPACT_ENCAP: |
8629 | case OFPACT_DECAP: | |
f25d0cf3 BP |
8630 | default: |
8631 | return false; | |
8632 | } | |
8633 | } | |
8634 | ||
8635 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
8636 | * to 'port', false otherwise. */ | |
8637 | bool | |
8638 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 8639 | ofp_port_t port) |
c2d936a4 BP |
8640 | { |
8641 | const struct ofpact *a; | |
f25d0cf3 | 8642 | |
4f20179d | 8643 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8644 | if (ofpact_outputs_to_port(a, port)) { |
8645 | return true; | |
8646 | } | |
8647 | } | |
f25d0cf3 | 8648 | |
c2d936a4 BP |
8649 | return false; |
8650 | } | |
f25d0cf3 | 8651 | |
c2d936a4 BP |
8652 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
8653 | * to 'group', false otherwise. */ | |
8654 | bool | |
8655 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
8656 | uint32_t group_id) | |
8657 | { | |
8658 | const struct ofpact *a; | |
b02475c5 | 8659 | |
4f20179d | 8660 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8661 | if (a->type == OFPACT_GROUP |
8662 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
8663 | return true; | |
8664 | } | |
8665 | } | |
b02475c5 | 8666 | |
c2d936a4 BP |
8667 | return false; |
8668 | } | |
8dd54666 | 8669 | |
6cc9d77c BP |
8670 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8671 | * actions in 'b' are bytewise identical. */ | |
c2d936a4 BP |
8672 | bool |
8673 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
8674 | const struct ofpact *b, size_t b_len) | |
8675 | { | |
8676 | return a_len == b_len && !memcmp(a, b, a_len); | |
8677 | } | |
29089a54 | 8678 | |
6cc9d77c BP |
8679 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8680 | * actions in 'b' are identical when formatted as strings. (Converting actions | |
8681 | * to string form suppresses some rarely meaningful differences, such as the | |
8682 | * 'compat' member of actions.) */ | |
8683 | bool | |
8684 | ofpacts_equal_stringwise(const struct ofpact *a, size_t a_len, | |
8685 | const struct ofpact *b, size_t b_len) | |
8686 | { | |
8687 | struct ds a_s = DS_EMPTY_INITIALIZER; | |
8688 | struct ds b_s = DS_EMPTY_INITIALIZER; | |
8689 | ||
8690 | ofpacts_format(a, a_len, NULL, &a_s); | |
8691 | ofpacts_format(b, b_len, NULL, &b_s); | |
8692 | ||
8693 | bool equal = !strcmp(ds_cstr(&a_s), ds_cstr(&b_s)); | |
8694 | ||
8695 | ds_destroy(&a_s); | |
8696 | ds_destroy(&b_s); | |
8697 | ||
8698 | return equal; | |
8699 | } | |
8700 | ||
c2d936a4 BP |
8701 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
8702 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
8703 | * | |
8704 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
8705 | * ofpacts_verify()). */ | |
8706 | uint32_t | |
8707 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
8708 | { | |
8709 | const struct ofpact *a; | |
7fdb60a7 | 8710 | |
c2d936a4 BP |
8711 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
8712 | enum ovs_instruction_type inst; | |
b19e8793 | 8713 | |
c2d936a4 BP |
8714 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
8715 | if (a->type == OFPACT_METER) { | |
8716 | return ofpact_get_METER(a)->meter_id; | |
8717 | } else if (inst > OVSINST_OFPIT13_METER) { | |
8718 | break; | |
4cceacb9 | 8719 | } |
c2d936a4 | 8720 | } |
638a19b0 | 8721 | |
c2d936a4 BP |
8722 | return 0; |
8723 | } | |
8724 | \f | |
8725 | /* Formatting ofpacts. */ | |
7395c052 | 8726 | |
c2d936a4 | 8727 | static void |
50f96b10 BP |
8728 | ofpact_format(const struct ofpact *a, |
8729 | const struct ofputil_port_map *port_map, struct ds *s) | |
c2d936a4 BP |
8730 | { |
8731 | switch (a->type) { | |
8732 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8733 | case OFPACT_##ENUM: \ | |
50f96b10 BP |
8734 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), \ |
8735 | port_map, s); \ | |
c2d936a4 BP |
8736 | break; |
8737 | OFPACTS | |
8738 | #undef OFPACT | |
8739 | default: | |
8740 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
8741 | } |
8742 | } | |
8743 | ||
8744 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
50f96b10 BP |
8745 | * 'ofpacts' to 'string'. If 'port_map' is nonnull, uses it to translate |
8746 | * port numbers to names in output. */ | |
f25d0cf3 BP |
8747 | void |
8748 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
50f96b10 | 8749 | const struct ofputil_port_map *port_map, struct ds *string) |
f25d0cf3 | 8750 | { |
f25d0cf3 | 8751 | if (!ofpacts_len) { |
b1c5bf1f | 8752 | ds_put_format(string, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
8753 | } else { |
8754 | const struct ofpact *a; | |
8755 | ||
8756 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8757 | if (a != ofpacts) { | |
b1c5bf1f | 8758 | ds_put_char(string, ','); |
f25d0cf3 | 8759 | } |
8dd54666 | 8760 | |
50f96b10 | 8761 | ofpact_format(a, port_map, string); |
f25d0cf3 BP |
8762 | } |
8763 | } | |
8764 | } | |
8765 | \f | |
8766 | /* Internal use by helpers. */ | |
8767 | ||
ce058104 | 8768 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
8769 | void * |
8770 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
8771 | { | |
8772 | struct ofpact *ofpact; | |
8773 | ||
6fd6ed71 PS |
8774 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
8775 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
8776 | ofpact_init(ofpact, type, len); |
8777 | return ofpact; | |
8778 | } | |
8779 | ||
ce058104 | 8780 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
8781 | void |
8782 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
8783 | { | |
8784 | memset(ofpact, 0, len); | |
8785 | ofpact->type = type; | |
c2d936a4 | 8786 | ofpact->raw = -1; |
f25d0cf3 BP |
8787 | ofpact->len = len; |
8788 | } | |
ce058104 BP |
8789 | |
8790 | /* Implementation of ofpact_finish_<ENUM>(). | |
8791 | * | |
8792 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
8793 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
8794 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
8795 | * the end of ofp-actions.h for more information. |
8796 | * | |
8797 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
8798 | * pointer to the return value of this function. */ | |
8799 | void * | |
34abaa3d | 8800 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 8801 | { |
5308056f JS |
8802 | ptrdiff_t len; |
8803 | ||
6fd6ed71 | 8804 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 8805 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 8806 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 8807 | ofpact->len = len; |
2bd318de | 8808 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
8809 | |
8810 | return ofpacts->header; | |
f25d0cf3 | 8811 | } |
c2d936a4 | 8812 | \f |
cab50449 | 8813 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
8814 | ofpact_parse(enum ofpact_type type, char *value, |
8815 | const struct ofputil_port_map *port_map, struct ofpbuf *ofpacts, | |
c2d936a4 BP |
8816 | enum ofputil_protocol *usable_protocols) |
8817 | { | |
8818 | switch (type) { | |
50f96b10 | 8819 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
c2d936a4 | 8820 | case OFPACT_##ENUM: \ |
50f96b10 | 8821 | return parse_##ENUM(value, port_map, ofpacts, usable_protocols); |
c2d936a4 BP |
8822 | OFPACTS |
8823 | #undef OFPACT | |
8824 | default: | |
8825 | OVS_NOT_REACHED(); | |
8826 | } | |
8827 | } | |
8828 | ||
8829 | static bool | |
8830 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
8831 | { | |
8832 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8833 | if (!strcasecmp(name, NAME)) { \ | |
8834 | *type = OFPACT_##ENUM; \ | |
8835 | return true; \ | |
8836 | } | |
8837 | OFPACTS | |
8838 | #undef OFPACT | |
8839 | ||
8840 | return false; | |
8841 | } | |
8842 | ||
8843 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
8844 | * | |
8845 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
8846 | * error. The caller is responsible for freeing the returned string. |
8847 | * | |
8848 | * If 'outer_action' is specified, indicates that the actions being parsed | |
8849 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 8850 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
8851 | ofpacts_parse__(char *str, const struct ofputil_port_map *port_map, |
8852 | struct ofpbuf *ofpacts, | |
c2d936a4 | 8853 | enum ofputil_protocol *usable_protocols, |
d824b5b7 | 8854 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8855 | { |
8856 | int prev_inst = -1; | |
8857 | enum ofperr retval; | |
8858 | char *key, *value; | |
8859 | bool drop = false; | |
8860 | char *pos; | |
8861 | ||
8862 | pos = str; | |
8863 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
8864 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
8865 | enum ofpact_type type; | |
8866 | char *error = NULL; | |
8867 | ofp_port_t port; | |
8868 | ||
8869 | if (ofpact_type_from_name(key, &type)) { | |
50f96b10 BP |
8870 | error = ofpact_parse(type, value, port_map, |
8871 | ofpacts, usable_protocols); | |
c2d936a4 BP |
8872 | inst = ovs_instruction_type_from_ofpact_type(type); |
8873 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
8874 | error = parse_set_vlan_vid(value, ofpacts, true); | |
8875 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { | |
8876 | error = parse_set_vlan_pcp(value, ofpacts, true); | |
8877 | } else if (!strcasecmp(key, "set_nw_ttl")) { | |
50f96b10 BP |
8878 | error = parse_SET_IP_TTL(value, port_map, |
8879 | ofpacts, usable_protocols); | |
c2d936a4 BP |
8880 | } else if (!strcasecmp(key, "pop_vlan")) { |
8881 | error = parse_pop_vlan(ofpacts); | |
8882 | } else if (!strcasecmp(key, "set_tunnel64")) { | |
8883 | error = parse_set_tunnel(value, ofpacts, | |
8884 | NXAST_RAW_SET_TUNNEL64); | |
7eb4b1f1 BP |
8885 | } else if (!strcasecmp(key, "load")) { |
8886 | error = parse_reg_load(value, ofpacts); | |
c2d936a4 | 8887 | } else if (!strcasecmp(key, "bundle_load")) { |
50f96b10 | 8888 | error = parse_bundle_load(value, port_map, ofpacts); |
c2d936a4 BP |
8889 | } else if (!strcasecmp(key, "drop")) { |
8890 | drop = true; | |
8891 | } else if (!strcasecmp(key, "apply_actions")) { | |
8892 | return xstrdup("apply_actions is the default instruction"); | |
50f96b10 | 8893 | } else if (ofputil_port_from_string(key, port_map, &port)) { |
c2d936a4 BP |
8894 | ofpact_put_OUTPUT(ofpacts)->port = port; |
8895 | } else { | |
8896 | return xasprintf("unknown action %s", key); | |
8897 | } | |
8898 | if (error) { | |
8899 | return error; | |
8900 | } | |
8901 | ||
8902 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
8903 | if (!allow_instructions) { | |
8904 | return xasprintf("only actions are allowed here (not " | |
8905 | "instruction %s)", | |
8906 | ovs_instruction_name_from_type(inst)); | |
8907 | } | |
8908 | if (inst == prev_inst) { | |
8909 | return xasprintf("instruction %s may be specified only once", | |
8910 | ovs_instruction_name_from_type(inst)); | |
8911 | } | |
8912 | } | |
8913 | if (prev_inst != -1 && inst < prev_inst) { | |
8914 | return xasprintf("instruction %s must be specified before %s", | |
8915 | ovs_instruction_name_from_type(inst), | |
8916 | ovs_instruction_name_from_type(prev_inst)); | |
8917 | } | |
8918 | prev_inst = inst; | |
8919 | } | |
c2d936a4 | 8920 | |
6fd6ed71 | 8921 | if (drop && ofpacts->size) { |
c2d936a4 BP |
8922 | return xstrdup("\"drop\" must not be accompanied by any other action " |
8923 | "or instruction"); | |
8924 | } | |
8925 | ||
6fd6ed71 | 8926 | retval = ofpacts_verify(ofpacts->data, ofpacts->size, |
c2d936a4 BP |
8927 | (allow_instructions |
8928 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
8929 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
8930 | outer_action); | |
c2d936a4 BP |
8931 | if (retval) { |
8932 | return xstrdup("Incorrect instruction ordering"); | |
8933 | } | |
8934 | ||
8935 | return NULL; | |
8936 | } | |
8937 | ||
cab50449 | 8938 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
8939 | ofpacts_parse(char *str, const struct ofputil_port_map *port_map, |
8940 | struct ofpbuf *ofpacts, enum ofputil_protocol *usable_protocols, | |
8941 | bool allow_instructions, enum ofpact_type outer_action) | |
c2d936a4 | 8942 | { |
6fd6ed71 | 8943 | uint32_t orig_size = ofpacts->size; |
50f96b10 | 8944 | char *error = ofpacts_parse__(str, port_map, ofpacts, usable_protocols, |
d824b5b7 | 8945 | allow_instructions, outer_action); |
c2d936a4 | 8946 | if (error) { |
6fd6ed71 | 8947 | ofpacts->size = orig_size; |
c2d936a4 BP |
8948 | } |
8949 | return error; | |
8950 | } | |
8951 | ||
cab50449 | 8952 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
8953 | ofpacts_parse_copy(const char *s_, const struct ofputil_port_map *port_map, |
8954 | struct ofpbuf *ofpacts, | |
c2d936a4 | 8955 | enum ofputil_protocol *usable_protocols, |
d824b5b7 | 8956 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8957 | { |
8958 | char *error, *s; | |
8959 | ||
8960 | *usable_protocols = OFPUTIL_P_ANY; | |
8961 | ||
8962 | s = xstrdup(s_); | |
50f96b10 BP |
8963 | error = ofpacts_parse(s, port_map, ofpacts, usable_protocols, |
8964 | allow_instructions, outer_action); | |
c2d936a4 BP |
8965 | free(s); |
8966 | ||
8967 | return error; | |
8968 | } | |
8969 | ||
8970 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
8971 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
8972 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
8973 | * |
8974 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8975 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8976 | char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
8977 | ofpacts_parse_actions(const char *s, const struct ofputil_port_map *port_map, |
8978 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
8979 | enum ofputil_protocol *usable_protocols) |
8980 | { | |
50f96b10 BP |
8981 | return ofpacts_parse_copy(s, port_map, ofpacts, usable_protocols, |
8982 | false, 0); | |
c2d936a4 BP |
8983 | } |
8984 | ||
8985 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
8986 | * 'ofpacts'. | |
8987 | * | |
8988 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8989 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8990 | char * OVS_WARN_UNUSED_RESULT |
50f96b10 BP |
8991 | ofpacts_parse_instructions(const char *s, |
8992 | const struct ofputil_port_map *port_map, | |
8993 | struct ofpbuf *ofpacts, | |
c2d936a4 BP |
8994 | enum ofputil_protocol *usable_protocols) |
8995 | { | |
50f96b10 | 8996 | return ofpacts_parse_copy(s, port_map, ofpacts, usable_protocols, true, 0); |
c2d936a4 | 8997 | } |
08d1e234 BP |
8998 | |
8999 | const char * | |
9000 | ofpact_name(enum ofpact_type type) | |
9001 | { | |
9002 | switch (type) { | |
9003 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
9004 | OFPACTS | |
9005 | #undef OFPACT | |
9006 | } | |
9007 | return "<unknown>"; | |
9008 | } | |
c2d936a4 BP |
9009 | \f |
9010 | /* Low-level action decoding and encoding functions. */ | |
9011 | ||
9012 | /* Everything needed to identify a particular OpenFlow action. */ | |
9013 | struct ofpact_hdrs { | |
9014 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
9015 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
9016 | uint8_t ofp_version; /* From ofp_header. */ | |
9017 | }; | |
9018 | ||
9019 | /* Information about a particular OpenFlow action. */ | |
9020 | struct ofpact_raw_instance { | |
9021 | /* The action's identity. */ | |
9022 | struct ofpact_hdrs hdrs; | |
9023 | enum ofp_raw_action_type raw; | |
9024 | ||
9025 | /* Looking up the action. */ | |
9026 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
9027 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
9028 | ||
9029 | /* The action's encoded size. | |
9030 | * | |
9031 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
9032 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
9033 | * OFP_ACTION_ALIGN) == 65528. */ | |
9034 | unsigned short int min_length; | |
9035 | unsigned short int max_length; | |
9036 | ||
9037 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
9038 | * offset of that argument from the beginning of the action and 'arg_len' | |
9039 | * its length, both in bytes. | |
9040 | * | |
9041 | * For actions that take other forms, these are both zero. */ | |
9042 | unsigned short int arg_ofs; | |
9043 | unsigned short int arg_len; | |
9044 | ||
9045 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
9046 | const char *name; | |
9047 | ||
9048 | /* If this action is deprecated, a human-readable string with a brief | |
9049 | * explanation. */ | |
9050 | const char *deprecation; | |
9051 | }; | |
9052 | ||
9053 | /* Action header. */ | |
9054 | struct ofp_action_header { | |
9055 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
9056 | * version (see enum ofp_raw_action_type). | |
9057 | * | |
9058 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
9059 | * designates an OpenFlow vendor ID and that the remainder of the action | |
9060 | * structure has a vendor-defined meaning. | |
9061 | */ | |
9062 | #define OFPAT_VENDOR 0xffff | |
9063 | ovs_be16 type; | |
9064 | ||
9065 | /* Always a multiple of 8. */ | |
9066 | ovs_be16 len; | |
9067 | ||
9068 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
9069 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
9070 | ovs_be32 vendor; | |
9071 | }; | |
9072 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
9073 | ||
c2d936a4 BP |
9074 | static bool |
9075 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
9076 | const struct ofpact_hdrs *b) | |
9077 | { | |
9078 | return (a->vendor == b->vendor | |
9079 | && a->type == b->type | |
9080 | && a->ofp_version == b->ofp_version); | |
9081 | } | |
9082 | ||
9083 | static uint32_t | |
9084 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
9085 | { | |
9086 | return hash_2words(hdrs->vendor, (hdrs->type << 16) | hdrs->ofp_version); | |
9087 | } | |
9088 | ||
9089 | #include "ofp-actions.inc2" | |
9090 | ||
9091 | static struct hmap * | |
9092 | ofpact_decode_hmap(void) | |
9093 | { | |
9094 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
9095 | static struct hmap hmap; | |
9096 | ||
9097 | if (ovsthread_once_start(&once)) { | |
9098 | struct ofpact_raw_instance *inst; | |
9099 | ||
9100 | hmap_init(&hmap); | |
9101 | for (inst = all_raw_instances; | |
9102 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
9103 | inst++) { | |
9104 | hmap_insert(&hmap, &inst->decode_node, | |
9105 | ofpact_hdrs_hash(&inst->hdrs)); | |
9106 | } | |
9107 | ovsthread_once_done(&once); | |
9108 | } | |
9109 | return &hmap; | |
9110 | } | |
9111 | ||
9112 | static struct hmap * | |
9113 | ofpact_encode_hmap(void) | |
9114 | { | |
9115 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
9116 | static struct hmap hmap; | |
9117 | ||
9118 | if (ovsthread_once_start(&once)) { | |
9119 | struct ofpact_raw_instance *inst; | |
9120 | ||
9121 | hmap_init(&hmap); | |
9122 | for (inst = all_raw_instances; | |
9123 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
9124 | inst++) { | |
9125 | hmap_insert(&hmap, &inst->encode_node, | |
9126 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
9127 | } | |
9128 | ovsthread_once_done(&once); | |
9129 | } | |
9130 | return &hmap; | |
9131 | } | |
9132 | ||
9133 | static enum ofperr | |
9134 | ofpact_decode_raw(enum ofp_version ofp_version, | |
9135 | const struct ofp_action_header *oah, size_t length, | |
9136 | const struct ofpact_raw_instance **instp) | |
9137 | { | |
9138 | const struct ofpact_raw_instance *inst; | |
9139 | struct ofpact_hdrs hdrs; | |
9140 | ||
9141 | *instp = NULL; | |
9142 | if (length < sizeof *oah) { | |
9143 | return OFPERR_OFPBAC_BAD_LEN; | |
9144 | } | |
9145 | ||
9146 | /* Get base action type. */ | |
9147 | if (oah->type == htons(OFPAT_VENDOR)) { | |
9148 | /* Get vendor. */ | |
9149 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
9150 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
9151 | /* Get extension subtype. */ | |
9152 | const struct ext_action_header *nah; | |
c2d936a4 | 9153 | |
232c1e12 | 9154 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
9155 | if (length < sizeof *nah) { |
9156 | return OFPERR_OFPBAC_BAD_LEN; | |
9157 | } | |
9158 | hdrs.type = ntohs(nah->subtype); | |
9159 | } else { | |
9160 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
9161 | hdrs.vendor); | |
9162 | return OFPERR_OFPBAC_BAD_VENDOR; | |
9163 | } | |
9164 | } else { | |
9165 | hdrs.vendor = 0; | |
9166 | hdrs.type = ntohs(oah->type); | |
9167 | } | |
9168 | ||
9169 | hdrs.ofp_version = ofp_version; | |
9170 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
9171 | ofpact_decode_hmap()) { | |
9172 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
9173 | *instp = inst; | |
9174 | return 0; | |
9175 | } | |
9176 | } | |
9177 | ||
9178 | return (hdrs.vendor | |
9179 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
9180 | : OFPERR_OFPBAC_BAD_TYPE); | |
9181 | } | |
9182 | ||
9183 | static enum ofperr | |
9184 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9185 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
9186 | { | |
6fd6ed71 | 9187 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
9188 | const struct ofpact_raw_instance *action; |
9189 | unsigned int length; | |
9190 | enum ofperr error; | |
9191 | ||
9192 | *raw = *arg = 0; | |
6fd6ed71 | 9193 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
9194 | if (error) { |
9195 | return error; | |
9196 | } | |
9197 | ||
9198 | if (action->deprecation) { | |
9199 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
9200 | action->name, ofputil_version_to_string(ofp_version), | |
9201 | action->deprecation); | |
9202 | } | |
9203 | ||
9204 | length = ntohs(oah->len); | |
6fd6ed71 | 9205 | if (length > buf->size) { |
b153b990 | 9206 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 9207 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
9208 | return OFPERR_OFPBAC_BAD_LEN; |
9209 | } | |
c2d936a4 BP |
9210 | if (length < action->min_length || length > action->max_length) { |
9211 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
9212 | "[%hu,%hu]", action->name, length, | |
9213 | action->min_length, action->max_length); | |
9214 | return OFPERR_OFPBAC_BAD_LEN; | |
9215 | } | |
9216 | if (length % 8) { | |
9217 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
9218 | "of 8", action->name, length); | |
9219 | return OFPERR_OFPBAC_BAD_LEN; | |
9220 | } | |
9221 | ||
9222 | *raw = action->raw; | |
9223 | *arg = 0; | |
9224 | if (action->arg_len) { | |
9225 | const uint8_t *p; | |
9226 | int i; | |
9227 | ||
9228 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
9229 | for (i = 0; i < action->arg_len; i++) { | |
9230 | *arg = (*arg << 8) | p[i]; | |
9231 | } | |
9232 | } | |
9233 | ||
9234 | ofpbuf_pull(buf, length); | |
9235 | ||
9236 | return 0; | |
9237 | } | |
9238 | ||
9239 | static const struct ofpact_raw_instance * | |
9240 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
9241 | { | |
9242 | const struct ofpact_raw_instance *inst; | |
9243 | ||
9244 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
9245 | ofpact_encode_hmap()) { | |
9246 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
9247 | return inst; | |
9248 | } | |
9249 | } | |
9250 | OVS_NOT_REACHED(); | |
9251 | } | |
9252 | ||
9253 | static void * | |
9254 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9255 | enum ofp_raw_action_type raw, uint64_t arg) | |
9256 | { | |
9257 | const struct ofpact_raw_instance *inst; | |
9258 | struct ofp_action_header *oah; | |
9259 | const struct ofpact_hdrs *hdrs; | |
9260 | ||
9261 | inst = ofpact_raw_lookup(ofp_version, raw); | |
9262 | hdrs = &inst->hdrs; | |
9263 | ||
9264 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
9265 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
9266 | oah->len = htons(inst->min_length); | |
9267 | oah->vendor = htonl(hdrs->vendor); | |
9268 | ||
9269 | switch (hdrs->vendor) { | |
9270 | case 0: | |
9271 | break; | |
9272 | ||
232c1e12 BP |
9273 | case NX_VENDOR_ID: |
9274 | case ONF_VENDOR_ID: { | |
9275 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
9276 | nah->subtype = htons(hdrs->type); |
9277 | break; | |
9278 | } | |
9279 | ||
9280 | default: | |
9281 | OVS_NOT_REACHED(); | |
9282 | } | |
9283 | ||
9284 | if (inst->arg_len) { | |
9285 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
9286 | int i; | |
9287 | ||
9288 | for (i = 0; i < inst->arg_len; i++) { | |
9289 | *--p = arg; | |
9290 | arg >>= 8; | |
9291 | } | |
9292 | } else { | |
9293 | ovs_assert(!arg); | |
9294 | } | |
9295 | ||
9296 | return oah; | |
9297 | } | |
178742f9 BP |
9298 | |
9299 | static void | |
9300 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
9301 | { | |
9302 | struct ofp_action_header *oah; | |
9303 | ||
9ac0aada JR |
9304 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
9305 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
9306 | |
9307 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 9308 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
9309 | } |
9310 |