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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" | |
0d71302e | 35 | #include "openvswitch/ofp-packet.h" |
b598f214 | 36 | #include "openvswitch/ofp-parse.h" |
0d71302e | 37 | #include "openvswitch/ofp-port.h" |
66bd43fa | 38 | #include "openvswitch/ofp-prop.h" |
0d71302e | 39 | #include "openvswitch/ofp-table.h" |
64c96779 | 40 | #include "openvswitch/ofpbuf.h" |
b598f214 | 41 | #include "openvswitch/vlog.h" |
c2d936a4 | 42 | #include "unaligned.h" |
cb22974d | 43 | #include "util.h" |
aafee638 | 44 | #include "vl-mff-map.h" |
f25d0cf3 BP |
45 | |
46 | VLOG_DEFINE_THIS_MODULE(ofp_actions); | |
47 | ||
48 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
f25d0cf3 | 49 | |
c2d936a4 BP |
50 | struct ofp_action_header; |
51 | ||
aad28f47 BP |
52 | /* Header for Open vSwitch and ONF vendor extension actions. |
53 | * | |
54 | * This is the entire header for a few Open vSwitch vendor extension actions, | |
55 | * the ones that either have no arguments or for which variable-length | |
56 | * arguments follow the header. | |
57 | * | |
58 | * This cannot be used as an entirely generic vendor extension action header, | |
59 | * because OpenFlow does not specify the location or size of the action | |
60 | * subtype; it just happens that ONF extensions and Nicira extensions share | |
61 | * this format. */ | |
62 | struct ext_action_header { | |
63 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
64 | ovs_be16 len; /* At least 16. */ | |
65 | ovs_be32 vendor; /* NX_VENDOR_ID or ONF_VENDOR_ID. */ | |
66 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
67 | uint8_t pad[6]; | |
68 | }; | |
69 | OFP_ASSERT(sizeof(struct ext_action_header) == 16); | |
70 | ||
c2d936a4 BP |
71 | /* Raw identifiers for OpenFlow actions. |
72 | * | |
73 | * Decoding and encoding OpenFlow actions across multiple versions is difficult | |
74 | * to do in a clean, consistent way. This enumeration lays out all of the | |
75 | * forms of actions that Open vSwitch supports. | |
76 | * | |
77 | * The comments here must follow a stylized form because the | |
78 | * "extract-ofp-actions" program parses them at build time to generate data | |
79 | * tables. | |
80 | * | |
81 | * - The first part of each comment specifies the vendor, OpenFlow versions, | |
82 | * and type for each protocol that supports the action: | |
83 | * | |
84 | * # The vendor is OF for standard OpenFlow actions, NX for Nicira | |
85 | * extension actions. (Support for other vendors can be added, but | |
86 | * it can't be done just based on a vendor ID definition alone | |
87 | * because OpenFlow doesn't define a standard way to specify a | |
88 | * subtype for vendor actions, so other vendors might do it different | |
89 | * from Nicira.) | |
90 | * | |
91 | * # The version can specify a specific OpenFlow version, a version | |
92 | * range delimited by "-", or an open-ended range with "+". | |
93 | * | |
94 | * # The type, in parentheses, is the action type number (for standard | |
95 | * OpenFlow actions) or subtype (for vendor extension actions). | |
96 | * | |
97 | * # Optionally one may add "is deprecated" followed by a | |
98 | * human-readable reason in parentheses (which will be used in log | |
99 | * messages), if a particular action should no longer be used. | |
100 | * | |
101 | * Multiple such specifications may be separated by commas. | |
102 | * | |
103 | * - The second part describes the action's wire format. It may be: | |
104 | * | |
105 | * # "struct <name>": The struct fully specifies the wire format. The | |
106 | * action is exactly the size of the struct. (Thus, the struct must | |
107 | * be an exact multiple of 8 bytes in size.) | |
108 | * | |
109 | * # "struct <name>, ...": The struct specifies the beginning of the | |
110 | * wire format. An instance of the action is either the struct's | |
111 | * exact size, or a multiple of 8 bytes longer. | |
112 | * | |
113 | * # "uint<N>_t" or "ovs_be<N>": The action consists of a (standard or | |
114 | * vendor extension) header, followed by 0 or more pad bytes to align | |
115 | * to a multiple of <N> bits, followed by an argument of the given | |
116 | * type, followed by 0 or more pad bytes to bring the total action up | |
117 | * to a multiple of 8 bytes. | |
118 | * | |
119 | * # "void": The action is just a (standard or vendor extension) | |
120 | * header. | |
121 | * | |
04f48a68 YHW |
122 | * # Optionally, one may add "VLMFF" in the end of the second part if |
123 | * the Openflow action may use a variable length meta-flow field | |
124 | * (i.e. tun_metadata). Adding "VLMFF" will pass the per-switch based | |
125 | * variable length meta-flow field mapping map (struct vl_mff_map) to | |
126 | * the corresponding action decoding function. | |
127 | * | |
c2d936a4 BP |
128 | * - Optional additional text enclosed in square brackets is commentary for |
129 | * the human reader. | |
130 | */ | |
131 | enum ofp_raw_action_type { | |
132 | /* ## ----------------- ## */ | |
133 | /* ## Standard actions. ## */ | |
134 | /* ## ----------------- ## */ | |
135 | ||
136 | /* OF1.0(0): struct ofp10_action_output. */ | |
137 | OFPAT_RAW10_OUTPUT, | |
138 | /* OF1.1+(0): struct ofp11_action_output. */ | |
139 | OFPAT_RAW11_OUTPUT, | |
140 | ||
141 | /* OF1.0(1): uint16_t. */ | |
142 | OFPAT_RAW10_SET_VLAN_VID, | |
143 | /* OF1.0(2): uint8_t. */ | |
144 | OFPAT_RAW10_SET_VLAN_PCP, | |
145 | ||
146 | /* OF1.1(1), OF1.2+(1) is deprecated (use Set-Field): uint16_t. | |
147 | * | |
148 | * [Semantics differ slightly between the 1.0 and 1.1 versions of the VLAN | |
149 | * modification actions: the 1.0 versions push a VLAN header if none is | |
150 | * present, but the 1.1 versions do not. That is the only reason that we | |
151 | * distinguish their raw action types.] */ | |
152 | OFPAT_RAW11_SET_VLAN_VID, | |
153 | /* OF1.1(2), OF1.2+(2) is deprecated (use Set-Field): uint8_t. */ | |
154 | OFPAT_RAW11_SET_VLAN_PCP, | |
155 | ||
156 | /* OF1.1+(17): ovs_be16. | |
157 | * | |
158 | * [The argument is the Ethertype, e.g. ETH_TYPE_VLAN_8021Q, not the VID or | |
159 | * TCI.] */ | |
160 | OFPAT_RAW11_PUSH_VLAN, | |
161 | ||
162 | /* OF1.0(3): void. */ | |
163 | OFPAT_RAW10_STRIP_VLAN, | |
164 | /* OF1.1+(18): void. */ | |
165 | OFPAT_RAW11_POP_VLAN, | |
166 | ||
167 | /* OF1.0(4), OF1.1(3), OF1.2+(3) is deprecated (use Set-Field): struct | |
168 | * ofp_action_dl_addr. */ | |
169 | OFPAT_RAW_SET_DL_SRC, | |
170 | ||
171 | /* OF1.0(5), OF1.1(4), OF1.2+(4) is deprecated (use Set-Field): struct | |
172 | * ofp_action_dl_addr. */ | |
173 | OFPAT_RAW_SET_DL_DST, | |
174 | ||
175 | /* OF1.0(6), OF1.1(5), OF1.2+(5) is deprecated (use Set-Field): | |
176 | * ovs_be32. */ | |
177 | OFPAT_RAW_SET_NW_SRC, | |
178 | ||
179 | /* OF1.0(7), OF1.1(6), OF1.2+(6) is deprecated (use Set-Field): | |
180 | * ovs_be32. */ | |
181 | OFPAT_RAW_SET_NW_DST, | |
182 | ||
183 | /* OF1.0(8), OF1.1(7), OF1.2+(7) is deprecated (use Set-Field): uint8_t. */ | |
184 | OFPAT_RAW_SET_NW_TOS, | |
185 | ||
186 | /* OF1.1(8), OF1.2+(8) is deprecated (use Set-Field): uint8_t. */ | |
187 | OFPAT_RAW11_SET_NW_ECN, | |
188 | ||
189 | /* OF1.0(9), OF1.1(9), OF1.2+(9) is deprecated (use Set-Field): | |
190 | * ovs_be16. */ | |
191 | OFPAT_RAW_SET_TP_SRC, | |
192 | ||
193 | /* OF1.0(10), OF1.1(10), OF1.2+(10) is deprecated (use Set-Field): | |
194 | * ovs_be16. */ | |
195 | OFPAT_RAW_SET_TP_DST, | |
196 | ||
197 | /* OF1.0(11): struct ofp10_action_enqueue. */ | |
198 | OFPAT_RAW10_ENQUEUE, | |
199 | ||
200 | /* NX1.0(30), OF1.1(13), OF1.2+(13) is deprecated (use Set-Field): | |
201 | * ovs_be32. */ | |
202 | OFPAT_RAW_SET_MPLS_LABEL, | |
203 | ||
204 | /* NX1.0(31), OF1.1(14), OF1.2+(14) is deprecated (use Set-Field): | |
205 | * uint8_t. */ | |
206 | OFPAT_RAW_SET_MPLS_TC, | |
207 | ||
208 | /* NX1.0(25), OF1.1(15), OF1.2+(15) is deprecated (use Set-Field): | |
209 | * uint8_t. */ | |
210 | OFPAT_RAW_SET_MPLS_TTL, | |
211 | ||
212 | /* NX1.0(26), OF1.1+(16): void. */ | |
213 | OFPAT_RAW_DEC_MPLS_TTL, | |
214 | ||
215 | /* NX1.0(23), OF1.1+(19): ovs_be16. | |
216 | * | |
217 | * [The argument is the Ethertype, e.g. ETH_TYPE_MPLS, not the label.] */ | |
218 | OFPAT_RAW_PUSH_MPLS, | |
219 | ||
220 | /* NX1.0(24), OF1.1+(20): ovs_be16. | |
221 | * | |
222 | * [The argument is the Ethertype, e.g. ETH_TYPE_IPV4 if at BoS or | |
223 | * ETH_TYPE_MPLS otherwise, not the label.] */ | |
224 | OFPAT_RAW_POP_MPLS, | |
225 | ||
226 | /* NX1.0(4), OF1.1+(21): uint32_t. */ | |
227 | OFPAT_RAW_SET_QUEUE, | |
228 | ||
88c8ca26 BP |
229 | /* NX1.0(40), OF1.1+(22): uint32_t. */ |
230 | OFPAT_RAW_GROUP, | |
c2d936a4 BP |
231 | |
232 | /* OF1.1+(23): uint8_t. */ | |
233 | OFPAT_RAW11_SET_NW_TTL, | |
234 | ||
235 | /* NX1.0(18), OF1.1+(24): void. */ | |
236 | OFPAT_RAW_DEC_NW_TTL, | |
237 | /* NX1.0+(21): struct nx_action_cnt_ids, ... */ | |
238 | NXAST_RAW_DEC_TTL_CNT_IDS, | |
239 | ||
04f48a68 | 240 | /* OF1.2-1.4(25): struct ofp12_action_set_field, ... VLMFF */ |
c2d936a4 | 241 | OFPAT_RAW12_SET_FIELD, |
04f48a68 | 242 | /* OF1.5+(25): struct ofp12_action_set_field, ... VLMFF */ |
7eb4b1f1 | 243 | OFPAT_RAW15_SET_FIELD, |
04f48a68 | 244 | /* NX1.0-1.4(7): struct nx_action_reg_load. VLMFF |
7eb4b1f1 BP |
245 | * |
246 | * [In OpenFlow 1.5, set_field is a superset of reg_load functionality, so | |
247 | * we drop reg_load.] */ | |
c2d936a4 | 248 | NXAST_RAW_REG_LOAD, |
04f48a68 | 249 | /* NX1.0-1.4(33): struct ext_action_header, ... VLMFF |
bad8a439 BP |
250 | * |
251 | * [In OpenFlow 1.5, set_field is a superset of reg_load2 functionality, so | |
252 | * we drop reg_load2.] */ | |
253 | NXAST_RAW_REG_LOAD2, | |
c2d936a4 | 254 | |
04f48a68 | 255 | /* OF1.5+(28): struct ofp15_action_copy_field, ... VLMFF */ |
73178f20 | 256 | OFPAT_RAW15_COPY_FIELD, |
04f48a68 | 257 | /* ONF1.3-1.4(3200): struct onf_action_copy_field, ... VLMFF */ |
914624f8 | 258 | ONFACT_RAW13_COPY_FIELD, |
04f48a68 | 259 | /* NX1.0-1.4(6): struct nx_action_reg_move, ... VLMFF */ |
73178f20 BP |
260 | NXAST_RAW_REG_MOVE, |
261 | ||
c2d936a4 BP |
262 | /* ## ------------------------- ## */ |
263 | /* ## Nicira extension actions. ## */ | |
264 | /* ## ------------------------- ## */ | |
265 | ||
266 | /* Actions similar to standard actions are listed with the standard actions. */ | |
267 | ||
268 | /* NX1.0+(1): uint16_t. */ | |
269 | NXAST_RAW_RESUBMIT, | |
270 | /* NX1.0+(14): struct nx_action_resubmit. */ | |
271 | NXAST_RAW_RESUBMIT_TABLE, | |
2cd20955 JR |
272 | /* NX1.0+(44): struct nx_action_resubmit. */ |
273 | NXAST_RAW_RESUBMIT_TABLE_CT, | |
c2d936a4 BP |
274 | |
275 | /* NX1.0+(2): uint32_t. */ | |
276 | NXAST_RAW_SET_TUNNEL, | |
277 | /* NX1.0+(9): uint64_t. */ | |
278 | NXAST_RAW_SET_TUNNEL64, | |
279 | ||
280 | /* NX1.0+(5): void. */ | |
281 | NXAST_RAW_POP_QUEUE, | |
282 | ||
c2d936a4 BP |
283 | /* NX1.0+(8): struct nx_action_note, ... */ |
284 | NXAST_RAW_NOTE, | |
285 | ||
04f48a68 | 286 | /* NX1.0+(10): struct nx_action_multipath. VLMFF */ |
c2d936a4 BP |
287 | NXAST_RAW_MULTIPATH, |
288 | ||
289 | /* NX1.0+(12): struct nx_action_bundle, ... */ | |
290 | NXAST_RAW_BUNDLE, | |
04f48a68 | 291 | /* NX1.0+(13): struct nx_action_bundle, ... VLMFF */ |
c2d936a4 BP |
292 | NXAST_RAW_BUNDLE_LOAD, |
293 | ||
04f48a68 | 294 | /* NX1.0+(15): struct nx_action_output_reg. VLMFF */ |
c2d936a4 | 295 | NXAST_RAW_OUTPUT_REG, |
04f48a68 | 296 | /* NX1.0+(32): struct nx_action_output_reg2. VLMFF */ |
bad8a439 | 297 | NXAST_RAW_OUTPUT_REG2, |
c2d936a4 | 298 | |
04f48a68 | 299 | /* NX1.0+(16): struct nx_action_learn, ... VLMFF */ |
c2d936a4 | 300 | NXAST_RAW_LEARN, |
4c71600d DDP |
301 | /* NX1.0+(45): struct nx_action_learn2, ... VLMFF */ |
302 | NXAST_RAW_LEARN2, | |
c2d936a4 BP |
303 | |
304 | /* NX1.0+(17): void. */ | |
305 | NXAST_RAW_EXIT, | |
306 | ||
307 | /* NX1.0+(19): struct nx_action_fin_timeout. */ | |
308 | NXAST_RAW_FIN_TIMEOUT, | |
309 | ||
310 | /* NX1.0+(20): struct nx_action_controller. */ | |
311 | NXAST_RAW_CONTROLLER, | |
aad28f47 | 312 | /* NX1.0+(37): struct ext_action_header, ... */ |
bdcad671 | 313 | NXAST_RAW_CONTROLLER2, |
c2d936a4 BP |
314 | |
315 | /* NX1.0+(22): struct nx_action_write_metadata. */ | |
316 | NXAST_RAW_WRITE_METADATA, | |
317 | ||
04f48a68 | 318 | /* NX1.0+(27): struct nx_action_stack. VLMFF */ |
c2d936a4 BP |
319 | NXAST_RAW_STACK_PUSH, |
320 | ||
04f48a68 | 321 | /* NX1.0+(28): struct nx_action_stack. VLMFF */ |
c2d936a4 BP |
322 | NXAST_RAW_STACK_POP, |
323 | ||
324 | /* NX1.0+(29): struct nx_action_sample. */ | |
325 | NXAST_RAW_SAMPLE, | |
f69f713b BY |
326 | /* NX1.0+(38): struct nx_action_sample2. */ |
327 | NXAST_RAW_SAMPLE2, | |
4930ea56 BP |
328 | /* NX1.0+(41): struct nx_action_sample2. */ |
329 | NXAST_RAW_SAMPLE3, | |
18080541 BP |
330 | |
331 | /* NX1.0+(34): struct nx_action_conjunction. */ | |
332 | NXAST_RAW_CONJUNCTION, | |
d4abaff5 | 333 | |
04f48a68 | 334 | /* NX1.0+(35): struct nx_action_conntrack, ... VLMFF */ |
07659514 JS |
335 | NXAST_RAW_CT, |
336 | ||
9ac0aada JR |
337 | /* NX1.0+(36): struct nx_action_nat, ... */ |
338 | NXAST_RAW_NAT, | |
339 | ||
aaca4fe0 WT |
340 | /* NX1.0+(39): struct nx_action_output_trunc. */ |
341 | NXAST_RAW_OUTPUT_TRUNC, | |
342 | ||
04f48a68 | 343 | /* NX1.0+(42): struct ext_action_header, ... VLMFF */ |
7ae62a67 WT |
344 | NXAST_RAW_CLONE, |
345 | ||
72fe7578 BP |
346 | /* NX1.0+(43): void. */ |
347 | NXAST_RAW_CT_CLEAR, | |
348 | ||
f839892a JS |
349 | /* NX1.3+(46): struct nx_action_encap, ... */ |
350 | NXAST_RAW_ENCAP, | |
351 | ||
352 | /* NX1.3+(47): struct nx_action_decap, ... */ | |
353 | NXAST_RAW_DECAP, | |
354 | ||
491e05c2 YY |
355 | /* NX1.3+(48): void. */ |
356 | NXAST_RAW_DEC_NSH_TTL, | |
357 | ||
d4abaff5 BP |
358 | /* ## ------------------ ## */ |
359 | /* ## Debugging actions. ## */ | |
360 | /* ## ------------------ ## */ | |
361 | ||
362 | /* These are intentionally undocumented, subject to change, and ovs-vswitchd */ | |
363 | /* accepts them only if started with --enable-dummy. */ | |
364 | ||
a934a3dd JP |
365 | /* NX1.0+(254): void. */ |
366 | NXAST_RAW_DEBUG_SLOW, | |
367 | ||
d4abaff5 BP |
368 | /* NX1.0+(255): void. */ |
369 | NXAST_RAW_DEBUG_RECIRC, | |
c2d936a4 BP |
370 | }; |
371 | ||
372 | /* OpenFlow actions are always a multiple of 8 bytes in length. */ | |
373 | #define OFP_ACTION_ALIGN 8 | |
374 | ||
375 | /* Define a few functions for working with instructions. */ | |
376 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
377 | static inline const struct STRUCT * OVS_UNUSED \ | |
378 | instruction_get_##ENUM(const struct ofp11_instruction *inst)\ | |
379 | { \ | |
380 | ovs_assert(inst->type == htons(ENUM)); \ | |
381 | return ALIGNED_CAST(struct STRUCT *, inst); \ | |
382 | } \ | |
383 | \ | |
384 | static inline void OVS_UNUSED \ | |
385 | instruction_init_##ENUM(struct STRUCT *s) \ | |
386 | { \ | |
387 | memset(s, 0, sizeof *s); \ | |
388 | s->type = htons(ENUM); \ | |
389 | s->len = htons(sizeof *s); \ | |
390 | } \ | |
391 | \ | |
392 | static inline struct STRUCT * OVS_UNUSED \ | |
393 | instruction_put_##ENUM(struct ofpbuf *buf) \ | |
394 | { \ | |
395 | struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \ | |
396 | instruction_init_##ENUM(s); \ | |
397 | return s; \ | |
398 | } | |
399 | OVS_INSTRUCTIONS | |
400 | #undef DEFINE_INST | |
401 | ||
402 | static void ofpacts_update_instruction_actions(struct ofpbuf *openflow, | |
403 | size_t ofs); | |
178742f9 | 404 | static void pad_ofpat(struct ofpbuf *openflow, size_t start_ofs); |
c2d936a4 BP |
405 | |
406 | static enum ofperr ofpacts_verify(const struct ofpact[], size_t ofpacts_len, | |
d824b5b7 JS |
407 | uint32_t allowed_ovsinsts, |
408 | enum ofpact_type outer_action); | |
c2d936a4 | 409 | |
128684a6 JR |
410 | static void put_set_field(struct ofpbuf *openflow, enum ofp_version, |
411 | enum mf_field_id, uint64_t value); | |
c2d936a4 | 412 | |
4b684612 BP |
413 | static void put_reg_load(struct ofpbuf *openflow, |
414 | const struct mf_subfield *, uint64_t value); | |
415 | ||
c2d936a4 BP |
416 | static enum ofperr ofpact_pull_raw(struct ofpbuf *, enum ofp_version, |
417 | enum ofp_raw_action_type *, uint64_t *arg); | |
418 | static void *ofpact_put_raw(struct ofpbuf *, enum ofp_version, | |
419 | enum ofp_raw_action_type, uint64_t arg); | |
420 | ||
cab50449 | 421 | static char *OVS_WARN_UNUSED_RESULT ofpacts_parse( |
efefbcae | 422 | char *str, const struct ofpact_parse_params *pp, |
d824b5b7 | 423 | bool allow_instructions, enum ofpact_type outer_action); |
07659514 JS |
424 | static enum ofperr ofpacts_pull_openflow_actions__( |
425 | struct ofpbuf *openflow, unsigned int actions_len, | |
426 | enum ofp_version version, uint32_t allowed_ovsinsts, | |
04f48a68 | 427 | struct ofpbuf *ofpacts, enum ofpact_type outer_action, |
5c7c16d8 | 428 | const struct vl_mff_map *vl_mff_map, uint64_t *ofpacts_tlv_bitmap); |
8e53fe8c | 429 | static char * OVS_WARN_UNUSED_RESULT ofpacts_parse_copy( |
efefbcae | 430 | const char *s_, const struct ofpact_parse_params *pp, |
8e53fe8c | 431 | bool allow_instructions, enum ofpact_type outer_action); |
d824b5b7 | 432 | |
4f20179d BP |
433 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
434 | * nested ofpacts it returns the first one. */ | |
435 | struct ofpact * | |
436 | ofpact_next_flattened(const struct ofpact *ofpact) | |
437 | { | |
438 | switch (ofpact->type) { | |
439 | case OFPACT_OUTPUT: | |
440 | case OFPACT_GROUP: | |
441 | case OFPACT_CONTROLLER: | |
442 | case OFPACT_ENQUEUE: | |
443 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 444 | case OFPACT_OUTPUT_TRUNC: |
4f20179d BP |
445 | case OFPACT_BUNDLE: |
446 | case OFPACT_SET_FIELD: | |
447 | case OFPACT_SET_VLAN_VID: | |
448 | case OFPACT_SET_VLAN_PCP: | |
449 | case OFPACT_STRIP_VLAN: | |
450 | case OFPACT_PUSH_VLAN: | |
451 | case OFPACT_SET_ETH_SRC: | |
452 | case OFPACT_SET_ETH_DST: | |
453 | case OFPACT_SET_IPV4_SRC: | |
454 | case OFPACT_SET_IPV4_DST: | |
455 | case OFPACT_SET_IP_DSCP: | |
456 | case OFPACT_SET_IP_ECN: | |
457 | case OFPACT_SET_IP_TTL: | |
458 | case OFPACT_SET_L4_SRC_PORT: | |
459 | case OFPACT_SET_L4_DST_PORT: | |
460 | case OFPACT_REG_MOVE: | |
461 | case OFPACT_STACK_PUSH: | |
462 | case OFPACT_STACK_POP: | |
463 | case OFPACT_DEC_TTL: | |
464 | case OFPACT_SET_MPLS_LABEL: | |
465 | case OFPACT_SET_MPLS_TC: | |
466 | case OFPACT_SET_MPLS_TTL: | |
467 | case OFPACT_DEC_MPLS_TTL: | |
468 | case OFPACT_PUSH_MPLS: | |
469 | case OFPACT_POP_MPLS: | |
470 | case OFPACT_SET_TUNNEL: | |
471 | case OFPACT_SET_QUEUE: | |
472 | case OFPACT_POP_QUEUE: | |
473 | case OFPACT_FIN_TIMEOUT: | |
474 | case OFPACT_RESUBMIT: | |
475 | case OFPACT_LEARN: | |
476 | case OFPACT_CONJUNCTION: | |
477 | case OFPACT_MULTIPATH: | |
478 | case OFPACT_NOTE: | |
479 | case OFPACT_EXIT: | |
480 | case OFPACT_SAMPLE: | |
481 | case OFPACT_UNROLL_XLATE: | |
72fe7578 | 482 | case OFPACT_CT_CLEAR: |
4f20179d | 483 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 484 | case OFPACT_DEBUG_SLOW: |
4f20179d BP |
485 | case OFPACT_METER: |
486 | case OFPACT_CLEAR_ACTIONS: | |
487 | case OFPACT_WRITE_METADATA: | |
488 | case OFPACT_GOTO_TABLE: | |
489 | case OFPACT_NAT: | |
f839892a JS |
490 | case OFPACT_ENCAP: |
491 | case OFPACT_DECAP: | |
491e05c2 | 492 | case OFPACT_DEC_NSH_TTL: |
4f20179d BP |
493 | return ofpact_next(ofpact); |
494 | ||
7ae62a67 WT |
495 | case OFPACT_CLONE: |
496 | return ofpact_get_CLONE(ofpact)->actions; | |
497 | ||
4f20179d BP |
498 | case OFPACT_CT: |
499 | return ofpact_get_CT(ofpact)->actions; | |
500 | ||
501 | case OFPACT_WRITE_ACTIONS: | |
502 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
503 | } | |
504 | ||
505 | OVS_NOT_REACHED(); | |
506 | } | |
507 | ||
d824b5b7 JS |
508 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
509 | * ofpacts_parse() oblivious of actions nesting. | |
510 | * | |
511 | * Push the actions back on after nested parsing, e.g.: | |
512 | * | |
513 | * size_t ofs = ofpacts_pull(ofpacts); | |
514 | * ...nested parsing... | |
515 | * ofpbuf_push_uninit(ofpacts, ofs); | |
516 | */ | |
517 | static size_t | |
518 | ofpacts_pull(struct ofpbuf *ofpacts) | |
519 | { | |
520 | size_t ofs; | |
521 | ||
d824b5b7 JS |
522 | ofs = ofpacts->size; |
523 | ofpbuf_pull(ofpacts, ofs); | |
524 | ||
525 | return ofs; | |
526 | } | |
c2d936a4 BP |
527 | |
528 | #include "ofp-actions.inc1" | |
529 | \f | |
530 | /* Output actions. */ | |
531 | ||
532 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
533 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
534 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
535 | * packet should be sent. */ | |
536 | struct ofp10_action_output { | |
537 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
538 | ovs_be16 len; /* Length is 8. */ | |
539 | ovs_be16 port; /* Output port. */ | |
540 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 541 | }; |
c2d936a4 BP |
542 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
543 | ||
544 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
545 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
546 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
547 | * packet should be sent.*/ | |
548 | struct ofp11_action_output { | |
549 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
550 | ovs_be16 len; /* Length is 16. */ | |
551 | ovs_be32 port; /* Output port. */ | |
552 | ovs_be16 max_len; /* Max length to send to controller. */ | |
553 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
554 | }; | |
555 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 556 | |
f25d0cf3 | 557 | static enum ofperr |
c2d936a4 | 558 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 559 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 560 | struct ofpbuf *out) |
f25d0cf3 BP |
561 | { |
562 | struct ofpact_output *output; | |
563 | ||
564 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 565 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
566 | output->max_len = ntohs(oao->max_len); |
567 | ||
57ad4e9e | 568 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
569 | } |
570 | ||
571 | static enum ofperr | |
c2d936a4 | 572 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
573 | enum ofp_version ofp_version OVS_UNUSED, |
574 | struct ofpbuf *out) | |
f25d0cf3 | 575 | { |
c2d936a4 BP |
576 | struct ofpact_output *output; |
577 | enum ofperr error; | |
f25d0cf3 | 578 | |
c2d936a4 BP |
579 | output = ofpact_put_OUTPUT(out); |
580 | output->max_len = ntohs(oao->max_len); | |
581 | ||
582 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
583 | if (error) { | |
584 | return error; | |
f25d0cf3 | 585 | } |
c2d936a4 BP |
586 | |
587 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
588 | } |
589 | ||
590 | static void | |
c2d936a4 BP |
591 | encode_OUTPUT(const struct ofpact_output *output, |
592 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 593 | { |
c2d936a4 BP |
594 | if (ofp_version == OFP10_VERSION) { |
595 | struct ofp10_action_output *oao; | |
f25d0cf3 | 596 | |
c2d936a4 BP |
597 | oao = put_OFPAT10_OUTPUT(out); |
598 | oao->port = htons(ofp_to_u16(output->port)); | |
599 | oao->max_len = htons(output->max_len); | |
600 | } else { | |
601 | struct ofp11_action_output *oao; | |
602 | ||
603 | oao = put_OFPAT11_OUTPUT(out); | |
604 | oao->port = ofputil_port_to_ofp11(output->port); | |
605 | oao->max_len = htons(output->max_len); | |
606 | } | |
f25d0cf3 BP |
607 | } |
608 | ||
aaca4fe0 | 609 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
610 | parse_truncate_subfield(const char *arg_, |
611 | const struct ofpact_parse_params *pp, | |
612 | struct ofpact_output_trunc *output_trunc) | |
aaca4fe0 WT |
613 | { |
614 | char *key, *value; | |
615 | char *arg = CONST_CAST(char *, arg_); | |
616 | ||
617 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
618 | if (!strcmp(key, "port")) { | |
efefbcae | 619 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 620 | &output_trunc->port)) { |
aaca4fe0 WT |
621 | return xasprintf("output to unknown truncate port: %s", |
622 | value); | |
623 | } | |
624 | if (ofp_to_u16(output_trunc->port) > ofp_to_u16(OFPP_MAX)) { | |
625 | if (output_trunc->port != OFPP_LOCAL && | |
626 | output_trunc->port != OFPP_IN_PORT) | |
627 | return xasprintf("output to unsupported truncate port: %s", | |
628 | value); | |
629 | } | |
630 | } else if (!strcmp(key, "max_len")) { | |
631 | char *err; | |
632 | ||
633 | err = str_to_u32(value, &output_trunc->max_len); | |
634 | if (err) { | |
635 | return err; | |
636 | } | |
637 | } else { | |
638 | return xasprintf("invalid key '%s' in output_trunc argument", | |
639 | key); | |
640 | } | |
641 | } | |
642 | return NULL; | |
643 | } | |
644 | ||
cab50449 | 645 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 646 | parse_OUTPUT(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 647 | { |
21b2fa61 | 648 | if (strstr(arg, "port") && strstr(arg, "max_len")) { |
aaca4fe0 WT |
649 | struct ofpact_output_trunc *output_trunc; |
650 | ||
efefbcae BP |
651 | output_trunc = ofpact_put_OUTPUT_TRUNC(pp->ofpacts); |
652 | return parse_truncate_subfield(arg, pp, output_trunc); | |
7df14f8b | 653 | } |
c2d936a4 | 654 | |
7df14f8b | 655 | ofp_port_t port; |
efefbcae BP |
656 | if (ofputil_port_from_string(arg, pp->port_map, &port)) { |
657 | struct ofpact_output *output = ofpact_put_OUTPUT(pp->ofpacts); | |
7df14f8b BP |
658 | output->port = port; |
659 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
c2d936a4 | 660 | return NULL; |
f25d0cf3 | 661 | } |
7df14f8b BP |
662 | |
663 | struct mf_subfield src; | |
664 | char *error = mf_parse_subfield(&src, arg); | |
665 | if (!error) { | |
666 | struct ofpact_output_reg *output_reg; | |
667 | ||
efefbcae | 668 | output_reg = ofpact_put_OUTPUT_REG(pp->ofpacts); |
7df14f8b BP |
669 | output_reg->max_len = UINT16_MAX; |
670 | output_reg->src = src; | |
671 | return NULL; | |
672 | } | |
673 | free(error); | |
674 | ||
675 | return xasprintf("%s: output to unknown port", arg); | |
c2d936a4 | 676 | } |
f25d0cf3 | 677 | |
c2d936a4 | 678 | static void |
50f96b10 | 679 | format_OUTPUT(const struct ofpact_output *a, |
efefbcae | 680 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
681 | { |
682 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
efefbcae | 683 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
50f96b10 | 684 | } |
efefbcae | 685 | ofputil_format_port(a->port, fp->port_map, fp->s); |
50f96b10 | 686 | if (a->port == OFPP_CONTROLLER) { |
efefbcae | 687 | ds_put_format(fp->s, ":%"PRIu16, a->max_len); |
c2d936a4 | 688 | } |
f25d0cf3 | 689 | } |
c2d936a4 BP |
690 | \f |
691 | /* Group actions. */ | |
f25d0cf3 BP |
692 | |
693 | static enum ofperr | |
88c8ca26 | 694 | decode_OFPAT_RAW_GROUP(uint32_t group_id, |
f3cd3ac7 JS |
695 | enum ofp_version ofp_version OVS_UNUSED, |
696 | struct ofpbuf *out) | |
f25d0cf3 | 697 | { |
c2d936a4 BP |
698 | ofpact_put_GROUP(out)->group_id = group_id; |
699 | return 0; | |
700 | } | |
f25d0cf3 | 701 | |
c2d936a4 BP |
702 | static void |
703 | encode_GROUP(const struct ofpact_group *group, | |
704 | enum ofp_version ofp_version, struct ofpbuf *out) | |
705 | { | |
88c8ca26 | 706 | put_OFPAT_GROUP(out, ofp_version, group->group_id); |
c2d936a4 | 707 | } |
f25d0cf3 | 708 | |
cab50449 | 709 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 710 | parse_GROUP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 711 | { |
efefbcae | 712 | return str_to_u32(arg, &ofpact_put_GROUP(pp->ofpacts)->group_id); |
f25d0cf3 BP |
713 | } |
714 | ||
715 | static void | |
50f96b10 | 716 | format_GROUP(const struct ofpact_group *a, |
efefbcae | 717 | const struct ofpact_format_params *fp) |
f25d0cf3 | 718 | { |
efefbcae | 719 | ds_put_format(fp->s, "%sgroup:%s%"PRIu32, |
b1c5bf1f | 720 | colors.special, colors.end, a->group_id); |
f25d0cf3 | 721 | } |
c2d936a4 BP |
722 | \f |
723 | /* Action structure for NXAST_CONTROLLER. | |
724 | * | |
725 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
726 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
727 | * specifying: | |
728 | * | |
729 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
730 | * | |
731 | * - 'controller_id': The ID of the controller connection to which the | |
732 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
733 | * sent only to controllers that have the specified controller connection | |
734 | * ID. See "struct nx_controller_id" for more information. */ | |
735 | struct nx_action_controller { | |
736 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
737 | ovs_be16 len; /* Length is 16. */ | |
738 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
739 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
740 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
741 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
742 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
743 | uint8_t zero; /* Must be zero. */ | |
744 | }; | |
745 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 746 | |
77ab5fd2 BP |
747 | /* Properties for NXAST_CONTROLLER2. |
748 | * | |
749 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
750 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
751 | enum nx_action_controller2_prop_type { |
752 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
753 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
754 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
755 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 756 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
206ddb9a | 757 | NXAC2PT_METER_ID, /* ovs_b32 meter (default NX_CTLR_NO_METER). */ |
bdcad671 BP |
758 | }; |
759 | ||
aad28f47 BP |
760 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
761 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 762 | |
c2d936a4 BP |
763 | static enum ofperr |
764 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 765 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 766 | struct ofpbuf *out) |
f25d0cf3 BP |
767 | { |
768 | struct ofpact_controller *oc; | |
769 | ||
770 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 771 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
772 | oc->max_len = ntohs(nac->max_len); |
773 | oc->controller_id = ntohs(nac->controller_id); | |
774 | oc->reason = nac->reason; | |
206ddb9a | 775 | oc->meter_id = NX_CTLR_NO_METER; |
ce058104 | 776 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
777 | |
778 | return 0; | |
779 | } | |
780 | ||
781 | static enum ofperr | |
aad28f47 | 782 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
783 | enum ofp_version ofp_version OVS_UNUSED, |
784 | struct ofpbuf *out) | |
785 | { | |
aad28f47 | 786 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
787 | return OFPERR_NXBRC_MUST_BE_ZERO; |
788 | } | |
789 | ||
790 | size_t start_ofs = out->size; | |
791 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
792 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
793 | oc->max_len = UINT16_MAX; | |
794 | oc->reason = OFPR_ACTION; | |
206ddb9a | 795 | oc->meter_id = NX_CTLR_NO_METER; |
bdcad671 BP |
796 | |
797 | struct ofpbuf properties; | |
aad28f47 BP |
798 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
799 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
800 | |
801 | while (properties.size > 0) { | |
802 | struct ofpbuf payload; | |
803 | uint64_t type; | |
804 | ||
805 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
806 | if (error) { | |
807 | return error; | |
808 | } | |
809 | ||
810 | switch (type) { | |
811 | case NXAC2PT_MAX_LEN: | |
812 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
813 | break; | |
814 | ||
815 | case NXAC2PT_CONTROLLER_ID: | |
816 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
817 | break; | |
818 | ||
819 | case NXAC2PT_REASON: { | |
820 | uint8_t u8; | |
821 | error = ofpprop_parse_u8(&payload, &u8); | |
822 | oc->reason = u8; | |
823 | break; | |
824 | } | |
825 | ||
826 | case NXAC2PT_USERDATA: | |
827 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
828 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
829 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
830 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
831 | break; | |
832 | ||
77ab5fd2 BP |
833 | case NXAC2PT_PAUSE: |
834 | oc->pause = true; | |
835 | break; | |
836 | ||
206ddb9a JP |
837 | case NXAC2PT_METER_ID: |
838 | error = ofpprop_parse_u32(&payload, &oc->meter_id); | |
839 | break; | |
840 | ||
bdcad671 BP |
841 | default: |
842 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
843 | break; | |
844 | } | |
845 | if (error) { | |
846 | return error; | |
847 | } | |
848 | } | |
849 | ||
ce058104 | 850 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 851 | |
c2d936a4 | 852 | return 0; |
f25d0cf3 BP |
853 | } |
854 | ||
c2d936a4 BP |
855 | static void |
856 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
857 | enum ofp_version ofp_version OVS_UNUSED, | |
858 | struct ofpbuf *out) | |
4cceacb9 | 859 | { |
bdcad671 | 860 | if (controller->userdata_len |
77ab5fd2 | 861 | || controller->pause |
206ddb9a | 862 | || controller->meter_id != NX_CTLR_NO_METER |
bdcad671 BP |
863 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
864 | size_t start_ofs = out->size; | |
865 | put_NXAST_CONTROLLER2(out); | |
866 | if (controller->max_len != UINT16_MAX) { | |
867 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
868 | } | |
869 | if (controller->controller_id != 0) { | |
870 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
871 | controller->controller_id); | |
872 | } | |
873 | if (controller->reason != OFPR_ACTION) { | |
874 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
875 | } | |
876 | if (controller->userdata_len != 0) { | |
877 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
878 | controller->userdata_len); | |
879 | } | |
77ab5fd2 BP |
880 | if (controller->pause) { |
881 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
882 | } | |
206ddb9a JP |
883 | if (controller->meter_id != NX_CTLR_NO_METER) { |
884 | ofpprop_put_u32(out, NXAC2PT_METER_ID, controller->meter_id); | |
885 | } | |
bdcad671 BP |
886 | pad_ofpat(out, start_ofs); |
887 | } else { | |
888 | struct nx_action_controller *nac; | |
4cceacb9 | 889 | |
bdcad671 BP |
890 | nac = put_NXAST_CONTROLLER(out); |
891 | nac->max_len = htons(controller->max_len); | |
892 | nac->controller_id = htons(controller->controller_id); | |
893 | nac->reason = controller->reason; | |
894 | } | |
c2d936a4 BP |
895 | } |
896 | ||
cab50449 | 897 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 898 | parse_CONTROLLER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
899 | { |
900 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
901 | uint16_t controller_id = 0; | |
902 | uint16_t max_len = UINT16_MAX; | |
206ddb9a | 903 | uint32_t meter_id = NX_CTLR_NO_METER; |
bdcad671 | 904 | const char *userdata = NULL; |
77ab5fd2 | 905 | bool pause = false; |
c2d936a4 BP |
906 | |
907 | if (!arg[0]) { | |
908 | /* Use defaults. */ | |
909 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
910 | char *error = str_to_u16(arg, "max_len", &max_len); | |
911 | if (error) { | |
912 | return error; | |
913 | } | |
914 | } else { | |
915 | char *name, *value; | |
916 | ||
917 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
918 | if (!strcmp(name, "reason")) { | |
919 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
920 | return xasprintf("unknown reason \"%s\"", value); | |
921 | } | |
922 | } else if (!strcmp(name, "max_len")) { | |
923 | char *error = str_to_u16(value, "max_len", &max_len); | |
924 | if (error) { | |
925 | return error; | |
926 | } | |
927 | } else if (!strcmp(name, "id")) { | |
928 | char *error = str_to_u16(value, "id", &controller_id); | |
929 | if (error) { | |
930 | return error; | |
931 | } | |
bdcad671 BP |
932 | } else if (!strcmp(name, "userdata")) { |
933 | userdata = value; | |
77ab5fd2 BP |
934 | } else if (!strcmp(name, "pause")) { |
935 | pause = true; | |
206ddb9a JP |
936 | } else if (!strcmp(name, "meter_id")) { |
937 | char *error = str_to_u32(value, &meter_id); | |
938 | if (error) { | |
939 | return error; | |
940 | } | |
c2d936a4 BP |
941 | } else { |
942 | return xasprintf("unknown key \"%s\" parsing controller " | |
943 | "action", name); | |
944 | } | |
945 | } | |
4cceacb9 JS |
946 | } |
947 | ||
206ddb9a JP |
948 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause |
949 | && meter_id == NX_CTLR_NO_METER) { | |
c2d936a4 | 950 | struct ofpact_output *output; |
4cceacb9 | 951 | |
efefbcae | 952 | output = ofpact_put_OUTPUT(pp->ofpacts); |
c2d936a4 BP |
953 | output->port = OFPP_CONTROLLER; |
954 | output->max_len = max_len; | |
955 | } else { | |
956 | struct ofpact_controller *controller; | |
957 | ||
efefbcae | 958 | controller = ofpact_put_CONTROLLER(pp->ofpacts); |
c2d936a4 BP |
959 | controller->max_len = max_len; |
960 | controller->reason = reason; | |
961 | controller->controller_id = controller_id; | |
77ab5fd2 | 962 | controller->pause = pause; |
206ddb9a | 963 | controller->meter_id = meter_id; |
bdcad671 BP |
964 | |
965 | if (userdata) { | |
efefbcae BP |
966 | size_t start_ofs = pp->ofpacts->size; |
967 | const char *end = ofpbuf_put_hex(pp->ofpacts, userdata, NULL); | |
bdcad671 BP |
968 | if (*end) { |
969 | return xstrdup("bad hex digit in `controller' " | |
970 | "action `userdata'"); | |
971 | } | |
efefbcae BP |
972 | size_t userdata_len = pp->ofpacts->size - start_ofs; |
973 | controller = pp->ofpacts->header; | |
bdcad671 BP |
974 | controller->userdata_len = userdata_len; |
975 | } | |
efefbcae | 976 | ofpact_finish_CONTROLLER(pp->ofpacts, &controller); |
c2d936a4 BP |
977 | } |
978 | ||
979 | return NULL; | |
4cceacb9 JS |
980 | } |
981 | ||
bdcad671 BP |
982 | static void |
983 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
984 | { | |
985 | for (size_t i = 0; i < len; i++) { | |
986 | if (i) { | |
987 | ds_put_char(s, '.'); | |
988 | } | |
989 | ds_put_format(s, "%02"PRIx8, data[i]); | |
990 | } | |
991 | } | |
992 | ||
f25d0cf3 | 993 | static void |
50f96b10 | 994 | format_CONTROLLER(const struct ofpact_controller *a, |
efefbcae | 995 | const struct ofpact_format_params *fp) |
f25d0cf3 | 996 | { |
77ab5fd2 | 997 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
206ddb9a | 998 | && !a->pause && a->meter_id == NX_CTLR_NO_METER) { |
efefbcae | 999 | ds_put_format(fp->s, "%sCONTROLLER:%s%"PRIu16, |
b1c5bf1f | 1000 | colors.special, colors.end, a->max_len); |
c2d936a4 BP |
1001 | } else { |
1002 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 1003 | |
efefbcae | 1004 | ds_put_format(fp->s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
1005 | if (reason != OFPR_ACTION) { |
1006 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
1007 | ||
efefbcae | 1008 | ds_put_format(fp->s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
1009 | ofputil_packet_in_reason_to_string( |
1010 | reason, reasonbuf, sizeof reasonbuf)); | |
1011 | } | |
1012 | if (a->max_len != UINT16_MAX) { | |
efefbcae | 1013 | ds_put_format(fp->s, "%smax_len=%s%"PRIu16",", |
b1c5bf1f | 1014 | colors.param, colors.end, a->max_len); |
c2d936a4 BP |
1015 | } |
1016 | if (a->controller_id != 0) { | |
efefbcae | 1017 | ds_put_format(fp->s, "%sid=%s%"PRIu16",", |
b1c5bf1f | 1018 | colors.param, colors.end, a->controller_id); |
c2d936a4 | 1019 | } |
bdcad671 | 1020 | if (a->userdata_len) { |
efefbcae BP |
1021 | ds_put_format(fp->s, "%suserdata=%s", colors.param, colors.end); |
1022 | format_hex_arg(fp->s, a->userdata, a->userdata_len); | |
1023 | ds_put_char(fp->s, ','); | |
bdcad671 | 1024 | } |
77ab5fd2 | 1025 | if (a->pause) { |
efefbcae | 1026 | ds_put_format(fp->s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 1027 | } |
206ddb9a JP |
1028 | if (a->meter_id != NX_CTLR_NO_METER) { |
1029 | ds_put_format(fp->s, "%smeter_id=%s%"PRIu32",", | |
1030 | colors.param, colors.end, a->meter_id); | |
1031 | } | |
efefbcae BP |
1032 | ds_chomp(fp->s, ','); |
1033 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 | 1034 | } |
f25d0cf3 | 1035 | } |
c2d936a4 BP |
1036 | \f |
1037 | /* Enqueue action. */ | |
1038 | struct ofp10_action_enqueue { | |
1039 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
1040 | ovs_be16 len; /* Len is 16. */ | |
1041 | ovs_be16 port; /* Port that queue belongs. Should | |
1042 | refer to a valid physical port | |
1043 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
1044 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
1045 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
1046 | }; | |
1047 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 1048 | |
c2d967a5 | 1049 | static enum ofperr |
c2d936a4 | 1050 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 1051 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1052 | struct ofpbuf *out) |
c2d967a5 | 1053 | { |
c2d936a4 | 1054 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 1055 | |
c2d936a4 BP |
1056 | enqueue = ofpact_put_ENQUEUE(out); |
1057 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
1058 | enqueue->queue = ntohl(oae->queue_id); | |
1059 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
1060 | && enqueue->port != OFPP_IN_PORT | |
1061 | && enqueue->port != OFPP_LOCAL) { | |
1062 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1063 | } | |
1064 | return 0; | |
c2d967a5 MM |
1065 | } |
1066 | ||
c2d936a4 BP |
1067 | static void |
1068 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1069 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1070 | { |
c2d936a4 BP |
1071 | if (ofp_version == OFP10_VERSION) { |
1072 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1073 | |
c2d936a4 BP |
1074 | oae = put_OFPAT10_ENQUEUE(out); |
1075 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1076 | oae->queue_id = htonl(enqueue->queue); | |
1077 | } else { | |
0f2aaee9 BP |
1078 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1079 | ||
1080 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1081 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1082 | oao->max_len = OVS_BE16_MAX; | |
1083 | ||
1084 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1085 | } |
c2d936a4 | 1086 | } |
c2d967a5 | 1087 | |
cab50449 | 1088 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1089 | parse_ENQUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
1090 | { |
1091 | char *sp = NULL; | |
1092 | char *port = strtok_r(arg, ":q,", &sp); | |
1093 | char *queue = strtok_r(NULL, "", &sp); | |
1094 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1095 | |
c2d936a4 BP |
1096 | if (port == NULL || queue == NULL) { |
1097 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1098 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1099 | } |
1100 | ||
efefbcae BP |
1101 | enqueue = ofpact_put_ENQUEUE(pp->ofpacts); |
1102 | if (!ofputil_port_from_string(port, pp->port_map, &enqueue->port)) { | |
c2d936a4 BP |
1103 | return xasprintf("%s: enqueue to unknown port", port); |
1104 | } | |
1105 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1106 | } |
1107 | ||
c2d936a4 | 1108 | static void |
50f96b10 | 1109 | format_ENQUEUE(const struct ofpact_enqueue *a, |
efefbcae | 1110 | const struct ofpact_format_params *fp) |
29089a54 | 1111 | { |
efefbcae BP |
1112 | ds_put_format(fp->s, "%senqueue:%s", colors.param, colors.end); |
1113 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
1114 | ds_put_format(fp->s, ":%"PRIu32, a->queue); | |
c2d936a4 BP |
1115 | } |
1116 | \f | |
1117 | /* Action structure for NXAST_OUTPUT_REG. | |
1118 | * | |
1119 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1120 | * | |
1121 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1122 | * the NXAST_REG_LOAD action. | |
1123 | * | |
1124 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1125 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1126 | * | |
1127 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1128 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1129 | * field of OFPAT_OUTPUT. | |
1130 | * | |
1131 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1132 | struct nx_action_output_reg { | |
1133 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1134 | ovs_be16 len; /* 24. */ | |
1135 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1136 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1137 | |
c2d936a4 BP |
1138 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1139 | ovs_be32 src; /* Source. */ | |
29089a54 | 1140 | |
c2d936a4 | 1141 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1142 | |
c2d936a4 BP |
1143 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1144 | }; | |
1145 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1146 | |
bad8a439 BP |
1147 | /* Action structure for NXAST_OUTPUT_REG2. |
1148 | * | |
1149 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1150 | * experimenter OXM as 'src'. | |
1151 | */ | |
1152 | struct nx_action_output_reg2 { | |
1153 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1154 | ovs_be16 len; /* 24. */ | |
1155 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1156 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1157 | ||
1158 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1159 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1160 | ||
1161 | /* Followed by: | |
1162 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1163 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1164 | uint8_t pad[10]; | |
1165 | }; | |
1166 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1167 | ||
a7a2d006 | 1168 | static enum ofperr |
c2d936a4 | 1169 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1170 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1171 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1172 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
a7a2d006 | 1173 | { |
c2d936a4 | 1174 | struct ofpact_output_reg *output_reg; |
5c7c16d8 | 1175 | enum ofperr error; |
a7a2d006 | 1176 | |
c2d936a4 | 1177 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1178 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1179 | } | |
a7a2d006 | 1180 | |
c2d936a4 | 1181 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1182 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1183 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); |
1184 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1185 | output_reg->max_len = ntohs(naor->max_len); | |
5c7c16d8 YHW |
1186 | error = mf_vl_mff_mf_from_nxm_header(ntohl(naor->src), vl_mff_map, |
1187 | &output_reg->src.field, tlv_bitmap); | |
1188 | if (error) { | |
1189 | return error; | |
04f48a68 YHW |
1190 | } |
1191 | ||
c2d936a4 | 1192 | return mf_check_src(&output_reg->src, NULL); |
a7a2d006 JS |
1193 | } |
1194 | ||
bad8a439 BP |
1195 | static enum ofperr |
1196 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 | 1197 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1198 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1199 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 BP |
1200 | { |
1201 | struct ofpact_output_reg *output_reg; | |
5c7c16d8 YHW |
1202 | enum ofperr error; |
1203 | ||
bad8a439 BP |
1204 | output_reg = ofpact_put_OUTPUT_REG(out); |
1205 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1206 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1207 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1208 | output_reg->max_len = ntohs(naor->max_len); | |
1209 | ||
0a2869d5 | 1210 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1211 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 | 1212 | |
5c7c16d8 YHW |
1213 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &output_reg->src.field, |
1214 | NULL, tlv_bitmap); | |
bad8a439 BP |
1215 | if (error) { |
1216 | return error; | |
1217 | } | |
5c7c16d8 | 1218 | |
6fd6ed71 | 1219 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1220 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1221 | } | |
1222 | ||
1223 | return mf_check_src(&output_reg->src, NULL); | |
1224 | } | |
1225 | ||
c2d936a4 BP |
1226 | static void |
1227 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1228 | enum ofp_version ofp_version OVS_UNUSED, | |
1229 | struct ofpbuf *out) | |
f25d0cf3 | 1230 | { |
bad8a439 BP |
1231 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1232 | * cannot be encoded in the older form, encode it as | |
1233 | * NXAST_RAW_OUTPUT_REG2. */ | |
1234 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1235 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1236 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1237 | size_t size = out->size; |
bad8a439 BP |
1238 | |
1239 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1240 | output_reg->src.n_bits); | |
1241 | naor->max_len = htons(output_reg->max_len); | |
1242 | ||
6fd6ed71 | 1243 | out->size = size - sizeof naor->pad; |
04f48a68 | 1244 | nx_put_mff_header(out, output_reg->src.field, 0, false); |
6fd6ed71 | 1245 | out->size = size; |
bad8a439 BP |
1246 | } else { |
1247 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1248 | |
bad8a439 BP |
1249 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1250 | output_reg->src.n_bits); | |
04f48a68 | 1251 | naor->src = htonl(nxm_header_from_mff(output_reg->src.field)); |
bad8a439 BP |
1252 | naor->max_len = htons(output_reg->max_len); |
1253 | } | |
f25d0cf3 BP |
1254 | } |
1255 | ||
cab50449 | 1256 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1257 | parse_OUTPUT_REG(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 1258 | { |
efefbcae | 1259 | return parse_OUTPUT(arg, pp); |
f25d0cf3 BP |
1260 | } |
1261 | ||
c2d936a4 | 1262 | static void |
50f96b10 | 1263 | format_OUTPUT_REG(const struct ofpact_output_reg *a, |
efefbcae | 1264 | const struct ofpact_format_params *fp) |
f25d0cf3 | 1265 | { |
efefbcae BP |
1266 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
1267 | mf_format_subfield(&a->src, fp->s); | |
c2d936a4 BP |
1268 | } |
1269 | \f | |
1270 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1271 | * | |
1272 | * The bundle actions choose a slave from a supplied list of options. | |
1273 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1274 | * selection to a register. | |
1275 | * | |
1276 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1277 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1278 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1279 | * the total length of the action a multiple of 8. | |
1280 | * | |
1281 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1282 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1283 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1284 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1285 | * unsupported slave types. | |
1286 | * | |
1287 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1288 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1289 | * it should reject the action. | |
1290 | * | |
1291 | * Several algorithms take into account liveness when selecting slaves. The | |
1292 | * liveness of a slave is implementation defined (with one exception), but will | |
1293 | * generally take into account things like its carrier status and the results | |
1294 | * of any link monitoring protocols which happen to be running on it. In order | |
1295 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
63460a30 TLSC |
1296 | * considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the output |
1297 | * register if no slave is live. | |
c2d936a4 BP |
1298 | * |
1299 | * Some slave selection strategies require the use of a hash function, in which | |
1300 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1301 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1302 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1303 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1304 | * of 'basis' yield different hash results. | |
1305 | * | |
1306 | * The 'zero' parameter at the end of the action structure is reserved for | |
1307 | * future use. Switches are required to reject actions which have nonzero | |
1308 | * bytes in the 'zero' field. | |
1309 | * | |
1310 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1311 | * should reject actions which have nonzero bytes in either of these fields. | |
1312 | * | |
1313 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1314 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1315 | * similar to those for the NXAST_REG_LOAD action. */ | |
1316 | struct nx_action_bundle { | |
1317 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1318 | ovs_be16 len; /* Length including slaves. */ | |
1319 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1320 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1321 | |
c2d936a4 BP |
1322 | /* Slave choice algorithm to apply to hash value. */ |
1323 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1324 | |
c2d936a4 BP |
1325 | /* What fields to hash and how. */ |
1326 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1327 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1328 | |
c2d936a4 BP |
1329 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1330 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1331 | |
c2d936a4 BP |
1332 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1333 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1334 | |
c2d936a4 BP |
1335 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1336 | }; | |
1337 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1338 | |
c2d936a4 BP |
1339 | static enum ofperr |
1340 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
5c7c16d8 YHW |
1341 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
1342 | struct ofpbuf *ofpacts) | |
c2d936a4 | 1343 | { |
7ed58d4a | 1344 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(1, 5); |
c2d936a4 BP |
1345 | struct ofpact_bundle *bundle; |
1346 | uint32_t slave_type; | |
1347 | size_t slaves_size, i; | |
1348 | enum ofperr error; | |
bd85dac1 | 1349 | |
c2d936a4 BP |
1350 | bundle = ofpact_put_BUNDLE(ofpacts); |
1351 | ||
1352 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1353 | bundle->basis = ntohs(nab->basis); | |
1354 | bundle->fields = ntohs(nab->fields); | |
1355 | bundle->algorithm = ntohs(nab->algorithm); | |
1356 | slave_type = ntohl(nab->slave_type); | |
1357 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1358 | ||
1359 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1360 | if (!flow_hash_fields_valid(bundle->fields)) { | |
7ed58d4a | 1361 | VLOG_WARN_RL(&rll, "unsupported fields %d", (int) bundle->fields); |
c2d936a4 | 1362 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { |
7ed58d4a | 1363 | VLOG_WARN_RL(&rll, "too many slaves"); |
c2d936a4 BP |
1364 | } else if (bundle->algorithm != NX_BD_ALG_HRW |
1365 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
7ed58d4a | 1366 | VLOG_WARN_RL(&rll, "unsupported algorithm %d", (int) bundle->algorithm); |
508a9338 | 1367 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
7ed58d4a | 1368 | VLOG_WARN_RL(&rll, "unsupported slave type %"PRIu32, slave_type); |
c2d936a4 BP |
1369 | } else { |
1370 | error = 0; | |
1371 | } | |
bd85dac1 | 1372 | |
c2d936a4 | 1373 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
7ed58d4a | 1374 | VLOG_WARN_RL(&rll, "reserved field is nonzero"); |
c2d936a4 BP |
1375 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1376 | } | |
f25d0cf3 | 1377 | |
c2d936a4 | 1378 | if (load) { |
c2d936a4 BP |
1379 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); |
1380 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
5c7c16d8 YHW |
1381 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nab->dst), vl_mff_map, |
1382 | &bundle->dst.field, tlv_bitmap); | |
1383 | if (error) { | |
1384 | return error; | |
04f48a68 | 1385 | } |
f25d0cf3 | 1386 | |
c2d936a4 | 1387 | if (bundle->dst.n_bits < 16) { |
7ed58d4a | 1388 | VLOG_WARN_RL(&rll, "bundle_load action requires at least 16 bit " |
c2d936a4 BP |
1389 | "destination."); |
1390 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1391 | } | |
1392 | } else { | |
1393 | if (nab->ofs_nbits || nab->dst) { | |
7ed58d4a | 1394 | VLOG_WARN_RL(&rll, "bundle action has nonzero reserved fields"); |
c2d936a4 BP |
1395 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1396 | } | |
1397 | } | |
f25d0cf3 | 1398 | |
c2d936a4 | 1399 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
7ed58d4a | 1400 | VLOG_WARN_RL(&rll, "Nicira action %s only has %"PRIuSIZE" bytes " |
c2d936a4 | 1401 | "allocated for slaves. %"PRIuSIZE" bytes are required " |
fd13c6b5 | 1402 | "for %u slaves.", |
c2d936a4 BP |
1403 | load ? "bundle_load" : "bundle", slaves_size, |
1404 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1405 | error = OFPERR_OFPBAC_BAD_LEN; | |
5026a263 BP |
1406 | } else { |
1407 | for (i = 0; i < bundle->n_slaves; i++) { | |
1408 | ofp_port_t ofp_port | |
1409 | = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); | |
1410 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); | |
1411 | bundle = ofpacts->header; | |
1412 | } | |
c2d936a4 | 1413 | } |
f25d0cf3 | 1414 | |
ce058104 | 1415 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1416 | if (!error) { |
1417 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1418 | } | |
1419 | return error; | |
1420 | } | |
f25d0cf3 | 1421 | |
c2d936a4 | 1422 | static enum ofperr |
f3cd3ac7 JS |
1423 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1424 | enum ofp_version ofp_version OVS_UNUSED, | |
1425 | struct ofpbuf *out) | |
c2d936a4 | 1426 | { |
5c7c16d8 | 1427 | return decode_bundle(false, nab, NULL, NULL, out); |
c2d936a4 | 1428 | } |
f25d0cf3 | 1429 | |
c2d936a4 BP |
1430 | static enum ofperr |
1431 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1432 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1433 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1434 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 | 1435 | { |
5c7c16d8 | 1436 | return decode_bundle(true, nab, vl_mff_map, tlv_bitmap, out); |
c2d936a4 | 1437 | } |
c2d967a5 | 1438 | |
c2d936a4 BP |
1439 | static void |
1440 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1441 | enum ofp_version ofp_version OVS_UNUSED, | |
1442 | struct ofpbuf *out) | |
1443 | { | |
1444 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1445 | struct nx_action_bundle *nab; | |
1446 | ovs_be16 *slaves; | |
1447 | size_t i; | |
f25d0cf3 | 1448 | |
c2d936a4 BP |
1449 | nab = (bundle->dst.field |
1450 | ? put_NXAST_BUNDLE_LOAD(out) | |
1451 | : put_NXAST_BUNDLE(out)); | |
1452 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1453 | nab->algorithm = htons(bundle->algorithm); | |
1454 | nab->fields = htons(bundle->fields); | |
1455 | nab->basis = htons(bundle->basis); | |
508a9338 | 1456 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1457 | nab->n_slaves = htons(bundle->n_slaves); |
1458 | if (bundle->dst.field) { | |
1459 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1460 | bundle->dst.n_bits); | |
04f48a68 | 1461 | nab->dst = htonl(nxm_header_from_mff(bundle->dst.field)); |
c2d936a4 | 1462 | } |
f25d0cf3 | 1463 | |
c2d936a4 BP |
1464 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1465 | for (i = 0; i < bundle->n_slaves; i++) { | |
1466 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1467 | } | |
1468 | } | |
b02475c5 | 1469 | |
cab50449 | 1470 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1471 | parse_BUNDLE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1472 | { |
efefbcae | 1473 | return bundle_parse(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1474 | } |
b02475c5 | 1475 | |
cab50449 | 1476 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1477 | parse_bundle_load(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1478 | { |
efefbcae | 1479 | return bundle_parse_load(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1480 | } |
097d4939 | 1481 | |
c2d936a4 | 1482 | static void |
50f96b10 | 1483 | format_BUNDLE(const struct ofpact_bundle *a, |
efefbcae | 1484 | const struct ofpact_format_params *fp) |
c2d936a4 | 1485 | { |
efefbcae | 1486 | bundle_format(a, fp->port_map, fp->s); |
c2d936a4 BP |
1487 | } |
1488 | \f | |
1489 | /* Set VLAN actions. */ | |
097d4939 | 1490 | |
c2d936a4 BP |
1491 | static enum ofperr |
1492 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1493 | { | |
1494 | if (vid & ~0xfff) { | |
1495 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1496 | } else { | |
1497 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1498 | vlan_vid->vlan_vid = vid; | |
1499 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1500 | return 0; | |
1501 | } | |
1502 | } | |
0f3f3c3d | 1503 | |
c2d936a4 | 1504 | static enum ofperr |
f3cd3ac7 JS |
1505 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1506 | enum ofp_version ofp_version OVS_UNUSED, | |
1507 | struct ofpbuf *out) | |
c2d936a4 BP |
1508 | { |
1509 | return decode_set_vlan_vid(vid, true, out); | |
1510 | } | |
b676167a | 1511 | |
c2d936a4 | 1512 | static enum ofperr |
f3cd3ac7 JS |
1513 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1514 | enum ofp_version ofp_version OVS_UNUSED, | |
1515 | struct ofpbuf *out) | |
c2d936a4 BP |
1516 | { |
1517 | return decode_set_vlan_vid(vid, false, out); | |
1518 | } | |
29089a54 | 1519 | |
c2d936a4 BP |
1520 | static void |
1521 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1522 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1523 | { | |
1524 | uint16_t vid = vlan_vid->vlan_vid; | |
1525 | ||
1526 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1527 | * for such a feature. */ | |
1528 | if (ofp_version > OFP10_VERSION | |
1529 | && vlan_vid->push_vlan_if_needed | |
1530 | && !vlan_vid->flow_has_vlan) { | |
1531 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1532 | } |
1533 | ||
c2d936a4 BP |
1534 | if (ofp_version == OFP10_VERSION) { |
1535 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1536 | } else if (ofp_version == OFP11_VERSION) { | |
1537 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1538 | } else { | |
128684a6 | 1539 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1540 | } |
f25d0cf3 BP |
1541 | } |
1542 | ||
cab50449 | 1543 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1544 | parse_set_vlan_vid(char *arg, bool push_vlan_if_needed, |
1545 | const struct ofpact_parse_params *pp) | |
d01c980f | 1546 | { |
ca287d20 | 1547 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1548 | uint16_t vid; |
1549 | char *error; | |
d01c980f | 1550 | |
c2d936a4 | 1551 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1552 | if (error) { |
1553 | return error; | |
1554 | } | |
1555 | ||
c2d936a4 BP |
1556 | if (vid & ~VLAN_VID_MASK) { |
1557 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1558 | } |
efefbcae | 1559 | vlan_vid = ofpact_put_SET_VLAN_VID(pp->ofpacts); |
c2d936a4 BP |
1560 | vlan_vid->vlan_vid = vid; |
1561 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1562 | return NULL; | |
1563 | } | |
d01c980f | 1564 | |
cab50449 | 1565 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1566 | parse_SET_VLAN_VID(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1567 | { |
efefbcae | 1568 | return parse_set_vlan_vid(arg, false, pp); |
d01c980f BP |
1569 | } |
1570 | ||
c2d936a4 | 1571 | static void |
50f96b10 | 1572 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, |
efefbcae | 1573 | const struct ofpact_format_params *fp) |
c2d936a4 | 1574 | { |
efefbcae | 1575 | ds_put_format(fp->s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1576 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1577 | colors.end, a->vlan_vid); |
c2d936a4 BP |
1578 | } |
1579 | \f | |
1580 | /* Set PCP actions. */ | |
e3f8f887 | 1581 | |
c2d936a4 BP |
1582 | static enum ofperr |
1583 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1584 | { |
c2d936a4 BP |
1585 | if (pcp & ~7) { |
1586 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1587 | } else { | |
1588 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1589 | vlan_pcp->vlan_pcp = pcp; | |
1590 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1591 | return 0; | |
1592 | } | |
f25d0cf3 BP |
1593 | } |
1594 | ||
c2d936a4 | 1595 | static enum ofperr |
f3cd3ac7 JS |
1596 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1597 | enum ofp_version ofp_version OVS_UNUSED, | |
1598 | struct ofpbuf *out) | |
f25d0cf3 | 1599 | { |
c2d936a4 | 1600 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1601 | } |
1602 | ||
c2d936a4 | 1603 | static enum ofperr |
f3cd3ac7 JS |
1604 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1605 | enum ofp_version ofp_version OVS_UNUSED, | |
1606 | struct ofpbuf *out) | |
c2d936a4 BP |
1607 | { |
1608 | return decode_set_vlan_pcp(pcp, false, out); | |
1609 | } | |
f25d0cf3 | 1610 | |
699dddf1 | 1611 | static void |
c2d936a4 BP |
1612 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1613 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1614 | { |
c2d936a4 BP |
1615 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1616 | ||
1617 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1618 | * for such a feature. */ | |
1619 | if (ofp_version > OFP10_VERSION | |
1620 | && vlan_pcp->push_vlan_if_needed | |
1621 | && !vlan_pcp->flow_has_vlan) { | |
1622 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1623 | } | |
699dddf1 | 1624 | |
c2d936a4 BP |
1625 | if (ofp_version == OFP10_VERSION) { |
1626 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1627 | } else if (ofp_version == OFP11_VERSION) { | |
1628 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1629 | } else { | |
128684a6 | 1630 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1631 | } |
1632 | } | |
1633 | ||
cab50449 | 1634 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1635 | parse_set_vlan_pcp(char *arg, bool push_vlan_if_needed, |
1636 | const struct ofpact_parse_params *pp) | |
f25d0cf3 | 1637 | { |
c2d936a4 BP |
1638 | struct ofpact_vlan_pcp *vlan_pcp; |
1639 | uint8_t pcp; | |
1640 | char *error; | |
e3f8f887 | 1641 | |
c2d936a4 BP |
1642 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1643 | if (error) { | |
699dddf1 | 1644 | return error; |
f25d0cf3 BP |
1645 | } |
1646 | ||
c2d936a4 BP |
1647 | if (pcp & ~7) { |
1648 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1649 | } | |
efefbcae | 1650 | vlan_pcp = ofpact_put_SET_VLAN_PCP(pp->ofpacts); |
c2d936a4 BP |
1651 | vlan_pcp->vlan_pcp = pcp; |
1652 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1653 | return NULL; | |
1654 | } | |
1655 | ||
cab50449 | 1656 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1657 | parse_SET_VLAN_PCP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1658 | { |
efefbcae | 1659 | return parse_set_vlan_pcp(arg, false, pp); |
c2d936a4 BP |
1660 | } |
1661 | ||
1662 | static void | |
50f96b10 | 1663 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, |
efefbcae | 1664 | const struct ofpact_format_params *fp) |
c2d936a4 | 1665 | { |
efefbcae | 1666 | ds_put_format(fp->s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1667 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1668 | colors.end, a->vlan_pcp); |
c2d936a4 BP |
1669 | } |
1670 | \f | |
1671 | /* Strip VLAN actions. */ | |
1672 | ||
1673 | static enum ofperr | |
1674 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1675 | { | |
1676 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1677 | return 0; |
1678 | } | |
1679 | ||
8f2cded4 | 1680 | static enum ofperr |
c2d936a4 | 1681 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1682 | { |
c2d936a4 BP |
1683 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1684 | return 0; | |
1685 | } | |
f25d0cf3 | 1686 | |
c2d936a4 BP |
1687 | static void |
1688 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1689 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1690 | { | |
1691 | if (ofp_version == OFP10_VERSION) { | |
1692 | put_OFPAT10_STRIP_VLAN(out); | |
1693 | } else { | |
1694 | put_OFPAT11_POP_VLAN(out); | |
1695 | } | |
1696 | } | |
f25d0cf3 | 1697 | |
cab50449 | 1698 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1699 | parse_STRIP_VLAN(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 1700 | { |
efefbcae | 1701 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; |
c2d936a4 BP |
1702 | return NULL; |
1703 | } | |
1704 | ||
cab50449 | 1705 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1706 | parse_pop_vlan(const struct ofpact_parse_params *pp) |
c2d936a4 | 1707 | { |
efefbcae | 1708 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
c2d936a4 BP |
1709 | return NULL; |
1710 | } | |
1711 | ||
1712 | static void | |
50f96b10 | 1713 | format_STRIP_VLAN(const struct ofpact_null *a, |
efefbcae | 1714 | const struct ofpact_format_params *fp) |
c2d936a4 | 1715 | { |
efefbcae | 1716 | ds_put_format(fp->s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
b1c5bf1f QM |
1717 | ? "%spop_vlan%s" |
1718 | : "%sstrip_vlan%s"), | |
1719 | colors.value, colors.end); | |
c2d936a4 BP |
1720 | } |
1721 | \f | |
1722 | /* Push VLAN action. */ | |
1723 | ||
1724 | static enum ofperr | |
f3cd3ac7 JS |
1725 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1726 | enum ofp_version ofp_version OVS_UNUSED, | |
1727 | struct ofpbuf *out) | |
c2d936a4 | 1728 | { |
f0fb825a EG |
1729 | struct ofpact_push_vlan *push_vlan; |
1730 | if (!eth_type_vlan(eth_type)) { | |
c2d936a4 | 1731 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
f25d0cf3 | 1732 | } |
f0fb825a EG |
1733 | push_vlan = ofpact_put_PUSH_VLAN(out); |
1734 | push_vlan->ethertype = eth_type; | |
c2d936a4 BP |
1735 | return 0; |
1736 | } | |
f25d0cf3 | 1737 | |
c2d936a4 | 1738 | static void |
f0fb825a | 1739 | encode_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
c2d936a4 BP |
1740 | enum ofp_version ofp_version, struct ofpbuf *out) |
1741 | { | |
1742 | if (ofp_version == OFP10_VERSION) { | |
1743 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1744 | * follow this action. */ | |
1745 | } else { | |
f0fb825a | 1746 | put_OFPAT11_PUSH_VLAN(out, push_vlan->ethertype); |
f25d0cf3 | 1747 | } |
c2d936a4 | 1748 | } |
f25d0cf3 | 1749 | |
cab50449 | 1750 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1751 | parse_PUSH_VLAN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1752 | { |
f0fb825a | 1753 | struct ofpact_push_vlan *push_vlan; |
c2d936a4 BP |
1754 | uint16_t ethertype; |
1755 | char *error; | |
1756 | ||
efefbcae | 1757 | *pp->usable_protocols &= OFPUTIL_P_OF11_UP; |
c2d936a4 | 1758 | error = str_to_u16(arg, "ethertype", ðertype); |
4cceacb9 | 1759 | if (error) { |
4cceacb9 JS |
1760 | return error; |
1761 | } | |
1762 | ||
f0fb825a | 1763 | if (!eth_type_vlan(htons(ethertype))) { |
c2d936a4 | 1764 | return xasprintf("%s: not a valid VLAN ethertype", arg); |
f25d0cf3 | 1765 | } |
efefbcae | 1766 | push_vlan = ofpact_put_PUSH_VLAN(pp->ofpacts); |
f0fb825a | 1767 | push_vlan->ethertype = htons(ethertype); |
c2d936a4 | 1768 | return NULL; |
d01c980f BP |
1769 | } |
1770 | ||
c2d936a4 | 1771 | static void |
50f96b10 | 1772 | format_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
efefbcae | 1773 | const struct ofpact_format_params *fp) |
8f2cded4 | 1774 | { |
efefbcae | 1775 | ds_put_format(fp->s, "%spush_vlan:%s%#"PRIx16, |
f0fb825a | 1776 | colors.param, colors.end, ntohs(push_vlan->ethertype)); |
8f2cded4 | 1777 | } |
d01c980f | 1778 | \f |
c2d936a4 BP |
1779 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1780 | struct ofp_action_dl_addr { | |
1781 | ovs_be16 type; /* Type. */ | |
1782 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1783 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1784 | uint8_t pad[6]; |
1785 | }; | |
1786 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1787 | |
d01c980f | 1788 | static enum ofperr |
c2d936a4 | 1789 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1790 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1791 | struct ofpbuf *out) |
d01c980f | 1792 | { |
74ff3298 | 1793 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1794 | return 0; |
1795 | } | |
3ddcaf2d | 1796 | |
c2d936a4 BP |
1797 | static enum ofperr |
1798 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1799 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1800 | struct ofpbuf *out) |
1801 | { | |
74ff3298 | 1802 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1803 | return 0; |
1804 | } | |
d01c980f | 1805 | |
c2d936a4 BP |
1806 | static void |
1807 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1808 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1809 | struct ofpbuf *out) | |
1810 | { | |
c2d936a4 BP |
1811 | if (ofp_version < OFP12_VERSION) { |
1812 | struct ofp_action_dl_addr *oada; | |
1813 | ||
1814 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1815 | oada->dl_addr = mac->mac; |
c2d936a4 | 1816 | } else { |
128684a6 | 1817 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1818 | } |
1819 | } | |
1820 | ||
c2d936a4 BP |
1821 | static void |
1822 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1823 | struct ofpbuf *out) | |
b2dd70be | 1824 | { |
c2d936a4 BP |
1825 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1826 | out); | |
b2dd70be | 1827 | |
c2d936a4 | 1828 | } |
b2dd70be | 1829 | |
c2d936a4 BP |
1830 | static void |
1831 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1832 | enum ofp_version ofp_version, | |
1833 | struct ofpbuf *out) | |
1834 | { | |
1835 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1836 | out); | |
b2dd70be | 1837 | |
c2d936a4 | 1838 | } |
b2dd70be | 1839 | |
cab50449 | 1840 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1841 | parse_SET_ETH_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1842 | { |
efefbcae | 1843 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(pp->ofpacts)->mac); |
c2d936a4 BP |
1844 | } |
1845 | ||
cab50449 | 1846 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1847 | parse_SET_ETH_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1848 | { |
efefbcae | 1849 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(pp->ofpacts)->mac); |
b2dd70be JR |
1850 | } |
1851 | ||
1852 | static void | |
50f96b10 | 1853 | format_SET_ETH_SRC(const struct ofpact_mac *a, |
efefbcae | 1854 | const struct ofpact_format_params *fp) |
b2dd70be | 1855 | { |
efefbcae | 1856 | ds_put_format(fp->s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1857 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 | 1858 | } |
b2dd70be | 1859 | |
c2d936a4 | 1860 | static void |
50f96b10 | 1861 | format_SET_ETH_DST(const struct ofpact_mac *a, |
efefbcae | 1862 | const struct ofpact_format_params *fp) |
c2d936a4 | 1863 | { |
efefbcae | 1864 | ds_put_format(fp->s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1865 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 BP |
1866 | } |
1867 | \f | |
1868 | /* Set IPv4 address actions. */ | |
b2dd70be | 1869 | |
c2d936a4 | 1870 | static enum ofperr |
f3cd3ac7 JS |
1871 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1872 | enum ofp_version ofp_version OVS_UNUSED, | |
1873 | struct ofpbuf *out) | |
c2d936a4 BP |
1874 | { |
1875 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1876 | return 0; | |
b2dd70be JR |
1877 | } |
1878 | ||
c2d936a4 | 1879 | static enum ofperr |
f3cd3ac7 JS |
1880 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
1881 | enum ofp_version ofp_version OVS_UNUSED, | |
1882 | struct ofpbuf *out) | |
b2dd70be | 1883 | { |
c2d936a4 BP |
1884 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
1885 | return 0; | |
1886 | } | |
b2dd70be | 1887 | |
c2d936a4 BP |
1888 | static void |
1889 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
1890 | enum ofp_version ofp_version, | |
1891 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1892 | struct ofpbuf *out) | |
1893 | { | |
1894 | ovs_be32 addr = ipv4->ipv4; | |
1895 | if (ofp_version < OFP12_VERSION) { | |
1896 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 1897 | } else { |
128684a6 | 1898 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
1899 | } |
1900 | } | |
1901 | ||
a6fd70bb | 1902 | static void |
c2d936a4 BP |
1903 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
1904 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1905 | { |
c2d936a4 BP |
1906 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
1907 | out); | |
1908 | } | |
a6fd70bb | 1909 | |
c2d936a4 BP |
1910 | static void |
1911 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
1912 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1913 | { | |
1914 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
1915 | out); | |
1916 | } | |
a6fd70bb | 1917 | |
cab50449 | 1918 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1919 | parse_SET_IPV4_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1920 | { |
efefbcae | 1921 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(pp->ofpacts)->ipv4); |
c2d936a4 | 1922 | } |
a6fd70bb | 1923 | |
cab50449 | 1924 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1925 | parse_SET_IPV4_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1926 | { |
efefbcae | 1927 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(pp->ofpacts)->ipv4); |
c2d936a4 | 1928 | } |
a6fd70bb | 1929 | |
c2d936a4 | 1930 | static void |
50f96b10 | 1931 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, |
efefbcae | 1932 | const struct ofpact_format_params *fp) |
c2d936a4 | 1933 | { |
efefbcae | 1934 | ds_put_format(fp->s, "%smod_nw_src:%s"IP_FMT, |
b1c5bf1f | 1935 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 | 1936 | } |
097d4939 | 1937 | |
c2d936a4 | 1938 | static void |
50f96b10 | 1939 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, |
efefbcae | 1940 | const struct ofpact_format_params *fp) |
c2d936a4 | 1941 | { |
efefbcae | 1942 | ds_put_format(fp->s, "%smod_nw_dst:%s"IP_FMT, |
b1c5bf1f | 1943 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 BP |
1944 | } |
1945 | \f | |
1946 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 1947 | |
c2d936a4 | 1948 | static enum ofperr |
f3cd3ac7 JS |
1949 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
1950 | enum ofp_version ofp_version OVS_UNUSED, | |
1951 | struct ofpbuf *out) | |
c2d936a4 BP |
1952 | { |
1953 | if (dscp & ~IP_DSCP_MASK) { | |
1954 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1955 | } else { | |
1956 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
1957 | return 0; | |
a6fd70bb JR |
1958 | } |
1959 | } | |
1960 | ||
a6fd70bb | 1961 | static void |
c2d936a4 BP |
1962 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
1963 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1964 | { |
c2d936a4 BP |
1965 | if (ofp_version < OFP12_VERSION) { |
1966 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
1967 | } else { | |
128684a6 | 1968 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
1969 | } |
1970 | } | |
a6fd70bb | 1971 | |
cab50449 | 1972 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1973 | parse_SET_IP_DSCP(char *arg, const struct ofpact_parse_params *pp) |
1974 | ||
c2d936a4 BP |
1975 | { |
1976 | uint8_t tos; | |
1977 | char *error; | |
a6fd70bb | 1978 | |
c2d936a4 BP |
1979 | error = str_to_u8(arg, "TOS", &tos); |
1980 | if (error) { | |
1981 | return error; | |
1982 | } | |
a6fd70bb | 1983 | |
c2d936a4 BP |
1984 | if (tos & ~IP_DSCP_MASK) { |
1985 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 1986 | } |
efefbcae | 1987 | ofpact_put_SET_IP_DSCP(pp->ofpacts)->dscp = tos; |
c2d936a4 | 1988 | return NULL; |
a6fd70bb JR |
1989 | } |
1990 | ||
b2dd70be | 1991 | static void |
50f96b10 | 1992 | format_SET_IP_DSCP(const struct ofpact_dscp *a, |
efefbcae | 1993 | const struct ofpact_format_params *fp) |
b2dd70be | 1994 | { |
efefbcae BP |
1995 | ds_put_format(fp->s, "%smod_nw_tos:%s%d", |
1996 | colors.param, colors.end, a->dscp); | |
c2d936a4 BP |
1997 | } |
1998 | \f | |
1999 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 2000 | |
c2d936a4 | 2001 | static enum ofperr |
f3cd3ac7 JS |
2002 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
2003 | enum ofp_version ofp_version OVS_UNUSED, | |
2004 | struct ofpbuf *out) | |
c2d936a4 BP |
2005 | { |
2006 | if (ecn & ~IP_ECN_MASK) { | |
2007 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 2008 | } else { |
c2d936a4 BP |
2009 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
2010 | return 0; | |
b2dd70be JR |
2011 | } |
2012 | } | |
2013 | ||
c2d936a4 BP |
2014 | static void |
2015 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
2016 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 2017 | { |
c2d936a4 BP |
2018 | uint8_t ecn = ip_ecn->ecn; |
2019 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
2020 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
2021 | .ofs = 0, .n_bits = 2 }; | |
2022 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
2023 | } else if (ofp_version == OFP11_VERSION) { |
2024 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
2025 | } else { | |
128684a6 | 2026 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
2027 | } |
2028 | } | |
d01c980f | 2029 | |
cab50449 | 2030 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2031 | parse_SET_IP_ECN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2032 | { |
2033 | uint8_t ecn; | |
2034 | char *error; | |
d01c980f | 2035 | |
c2d936a4 | 2036 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
2037 | if (error) { |
2038 | return error; | |
2039 | } | |
2040 | ||
c2d936a4 BP |
2041 | if (ecn & ~IP_ECN_MASK) { |
2042 | return xasprintf("%s: not a valid ECN", arg); | |
2043 | } | |
efefbcae | 2044 | ofpact_put_SET_IP_ECN(pp->ofpacts)->ecn = ecn; |
c2d936a4 | 2045 | return NULL; |
d01c980f BP |
2046 | } |
2047 | ||
c2d936a4 | 2048 | static void |
50f96b10 | 2049 | format_SET_IP_ECN(const struct ofpact_ecn *a, |
efefbcae | 2050 | const struct ofpact_format_params *fp) |
c2d936a4 | 2051 | { |
efefbcae | 2052 | ds_put_format(fp->s, "%smod_nw_ecn:%s%d", |
b1c5bf1f | 2053 | colors.param, colors.end, a->ecn); |
c2d936a4 BP |
2054 | } |
2055 | \f | |
2056 | /* Set IPv4/v6 TTL actions. */ | |
2057 | ||
d01c980f | 2058 | static enum ofperr |
f3cd3ac7 JS |
2059 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
2060 | enum ofp_version ofp_version OVS_UNUSED, | |
2061 | struct ofpbuf *out) | |
d01c980f | 2062 | { |
c2d936a4 BP |
2063 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
2064 | return 0; | |
2065 | } | |
2066 | ||
2067 | static void | |
2068 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
2069 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2070 | { | |
2071 | if (ofp_version >= OFP11_VERSION) { | |
2072 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
2073 | } else { | |
56a91749 BP |
2074 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
2075 | .ofs = 0, .n_bits = 8 }; | |
2076 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
2077 | } |
2078 | } | |
2079 | ||
cab50449 | 2080 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
2081 | parse_SET_IP_TTL(char *arg, const struct ofpact_parse_params *pp) |
2082 | ||
c2d936a4 BP |
2083 | { |
2084 | uint8_t ttl; | |
2085 | char *error; | |
d01c980f | 2086 | |
c2d936a4 | 2087 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2088 | if (error) { |
2089 | return error; | |
2090 | } | |
2091 | ||
efefbcae | 2092 | ofpact_put_SET_IP_TTL(pp->ofpacts)->ttl = ttl; |
c2d936a4 BP |
2093 | return NULL; |
2094 | } | |
d01c980f | 2095 | |
c2d936a4 | 2096 | static void |
50f96b10 | 2097 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, |
efefbcae | 2098 | const struct ofpact_format_params *fp) |
c2d936a4 | 2099 | { |
efefbcae BP |
2100 | ds_put_format(fp->s, "%smod_nw_ttl:%s%d", |
2101 | colors.param, colors.end, a->ttl); | |
c2d936a4 BP |
2102 | } |
2103 | \f | |
2104 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2105 | |
c2d936a4 | 2106 | static enum ofperr |
f3cd3ac7 JS |
2107 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2108 | enum ofp_version ofp_version OVS_UNUSED, | |
2109 | struct ofpbuf *out) | |
c2d936a4 BP |
2110 | { |
2111 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2112 | return 0; | |
2113 | } | |
d01c980f | 2114 | |
c2d936a4 | 2115 | static enum ofperr |
f3cd3ac7 JS |
2116 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2117 | enum ofp_version ofp_version OVS_UNUSED, | |
2118 | struct ofpbuf *out) | |
c2d936a4 BP |
2119 | { |
2120 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2121 | return 0; | |
2122 | } | |
d01c980f | 2123 | |
c2d936a4 BP |
2124 | static void |
2125 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2126 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2127 | enum mf_field_id field, struct ofpbuf *out) | |
2128 | { | |
2129 | uint16_t port = l4_port->port; | |
3e34fbdd | 2130 | |
c2d936a4 | 2131 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2132 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2133 | } else { |
2134 | ofpact_put_raw(out, ofp_version, raw, port); | |
2135 | } | |
2136 | } | |
8e61c110 | 2137 | |
c2d936a4 BP |
2138 | static void |
2139 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2140 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2141 | { | |
2142 | uint8_t proto = l4_port->flow_ip_proto; | |
2143 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2144 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2145 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2146 | : MFF_N_IDS); | |
276c4e7a | 2147 | |
c2d936a4 BP |
2148 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2149 | } | |
d01c980f | 2150 | |
c2d936a4 BP |
2151 | static void |
2152 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2153 | enum ofp_version ofp_version, | |
2154 | struct ofpbuf *out) | |
2155 | { | |
2156 | uint8_t proto = l4_port->flow_ip_proto; | |
2157 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2158 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2159 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2160 | : MFF_N_IDS); | |
d01c980f | 2161 | |
c2d936a4 BP |
2162 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2163 | } | |
7bcb1506 | 2164 | |
cab50449 | 2165 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2166 | parse_SET_L4_SRC_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2167 | { |
2168 | return str_to_u16(arg, "source port", | |
efefbcae | 2169 | &ofpact_put_SET_L4_SRC_PORT(pp->ofpacts)->port); |
c2d936a4 | 2170 | } |
d01c980f | 2171 | |
cab50449 | 2172 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2173 | parse_SET_L4_DST_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2174 | { |
2175 | return str_to_u16(arg, "destination port", | |
efefbcae | 2176 | &ofpact_put_SET_L4_DST_PORT(pp->ofpacts)->port); |
c2d936a4 | 2177 | } |
d01c980f | 2178 | |
c2d936a4 | 2179 | static void |
50f96b10 | 2180 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2181 | const struct ofpact_format_params *fp) |
c2d936a4 | 2182 | { |
efefbcae BP |
2183 | ds_put_format(fp->s, "%smod_tp_src:%s%d", |
2184 | colors.param, colors.end, a->port); | |
c2d936a4 | 2185 | } |
d01c980f | 2186 | |
c2d936a4 | 2187 | static void |
50f96b10 | 2188 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2189 | const struct ofpact_format_params *fp) |
c2d936a4 | 2190 | { |
efefbcae BP |
2191 | ds_put_format(fp->s, "%smod_tp_dst:%s%d", |
2192 | colors.param, colors.end, a->port); | |
c2d936a4 BP |
2193 | } |
2194 | \f | |
73178f20 BP |
2195 | /* Action structure for OFPAT_COPY_FIELD. */ |
2196 | struct ofp15_action_copy_field { | |
2197 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2198 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2199 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2200 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2201 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2202 | uint8_t pad[2]; |
f13cdd73 BP |
2203 | /* Followed by: |
2204 | * - OXM header for source field. | |
2205 | * - OXM header for destination field. | |
2206 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2207 | * The "pad2" member is the beginning of the above. */ |
2208 | uint8_t pad2[4]; | |
73178f20 | 2209 | }; |
f13cdd73 | 2210 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2211 | |
914624f8 BP |
2212 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2213 | struct onf_action_copy_field { | |
2214 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2215 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2216 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2217 | ovs_be16 exp_type; /* 3200. */ | |
2218 | uint8_t pad[2]; /* Not used. */ | |
2219 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2220 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2221 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2222 | uint8_t pad2[2]; /* Not used. */ | |
2223 | /* Followed by: | |
2224 | * - OXM header for source field. | |
2225 | * - OXM header for destination field. | |
2226 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2227 | * The "pad3" member is the beginning of the above. */ | |
2228 | uint8_t pad3[4]; /* Not used. */ | |
2229 | }; | |
2230 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2231 | ||
c2d936a4 BP |
2232 | /* Action structure for NXAST_REG_MOVE. |
2233 | * | |
2234 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2235 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2236 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2237 | * the next most significant bit, and so on. | |
2238 | * | |
2239 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2240 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2241 | * matching; it uses the actual value of a field.) | |
2242 | * | |
2243 | * The following nxm_header values are potentially acceptable as 'src': | |
2244 | * | |
2245 | * - NXM_OF_IN_PORT | |
2246 | * - NXM_OF_ETH_DST | |
2247 | * - NXM_OF_ETH_SRC | |
2248 | * - NXM_OF_ETH_TYPE | |
2249 | * - NXM_OF_VLAN_TCI | |
2250 | * - NXM_OF_IP_TOS | |
2251 | * - NXM_OF_IP_PROTO | |
2252 | * - NXM_OF_IP_SRC | |
2253 | * - NXM_OF_IP_DST | |
2254 | * - NXM_OF_TCP_SRC | |
2255 | * - NXM_OF_TCP_DST | |
2256 | * - NXM_OF_UDP_SRC | |
2257 | * - NXM_OF_UDP_DST | |
2258 | * - NXM_OF_ICMP_TYPE | |
2259 | * - NXM_OF_ICMP_CODE | |
2260 | * - NXM_OF_ARP_OP | |
2261 | * - NXM_OF_ARP_SPA | |
2262 | * - NXM_OF_ARP_TPA | |
2263 | * - NXM_NX_TUN_ID | |
2264 | * - NXM_NX_ARP_SHA | |
2265 | * - NXM_NX_ARP_THA | |
2266 | * - NXM_NX_ICMPV6_TYPE | |
2267 | * - NXM_NX_ICMPV6_CODE | |
2268 | * - NXM_NX_ND_SLL | |
2269 | * - NXM_NX_ND_TLL | |
2270 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2271 | * - NXM_NX_PKT_MARK | |
2272 | * - NXM_NX_TUN_IPV4_SRC | |
2273 | * - NXM_NX_TUN_IPV4_DST | |
2274 | * | |
2275 | * The following nxm_header values are potentially acceptable as 'dst': | |
2276 | * | |
2277 | * - NXM_OF_ETH_DST | |
2278 | * - NXM_OF_ETH_SRC | |
2279 | * - NXM_OF_IP_TOS | |
2280 | * - NXM_OF_IP_SRC | |
2281 | * - NXM_OF_IP_DST | |
2282 | * - NXM_OF_TCP_SRC | |
2283 | * - NXM_OF_TCP_DST | |
2284 | * - NXM_OF_UDP_SRC | |
2285 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2286 | * - NXM_OF_ICMP_TYPE |
2287 | * - NXM_OF_ICMP_CODE | |
2288 | * - NXM_NX_ICMPV6_TYPE | |
2289 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2290 | * - NXM_NX_ARP_SHA |
2291 | * - NXM_NX_ARP_THA | |
2292 | * - NXM_OF_ARP_OP | |
2293 | * - NXM_OF_ARP_SPA | |
2294 | * - NXM_OF_ARP_TPA | |
2295 | * Modifying any of the above fields changes the corresponding packet | |
2296 | * header. | |
2297 | * | |
2298 | * - NXM_OF_IN_PORT | |
2299 | * | |
2300 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2301 | * | |
2302 | * - NXM_NX_PKT_MARK | |
2303 | * | |
2304 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2305 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2306 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2307 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2308 | * to the field's new value (with the CFI bit masked out). | |
2309 | * | |
2310 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2311 | * any of these values modifies the corresponding tunnel header field used | |
2312 | * for the packet's next tunnel encapsulation, if allowed by the | |
2313 | * configuration of the output tunnel port. | |
2314 | * | |
2315 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2316 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2317 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2318 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2319 | * | |
2320 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2321 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2322 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2323 | * | |
2324 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2325 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2326 | * temporary buffer copied to 'dst'. | |
2327 | */ | |
2328 | struct nx_action_reg_move { | |
2329 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2330 | ovs_be16 len; /* Length is 24. */ | |
2331 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2332 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2333 | ovs_be16 n_bits; /* Number of bits. */ | |
2334 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2335 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2336 | /* Followed by: |
2337 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2338 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2339 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2340 | }; |
bad8a439 | 2341 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2342 | |
73178f20 | 2343 | static enum ofperr |
914624f8 BP |
2344 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2345 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
04f48a68 | 2346 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2347 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
73178f20 | 2348 | { |
0a2869d5 | 2349 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2350 | enum ofperr error; |
2351 | ||
914624f8 BP |
2352 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2353 | move->src.ofs = ntohs(src_offset); | |
2354 | move->src.n_bits = ntohs(n_bits); | |
2355 | move->dst.ofs = ntohs(dst_offset); | |
2356 | move->dst.n_bits = ntohs(n_bits); | |
2357 | ||
0a2869d5 | 2358 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2359 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 | 2360 | |
5c7c16d8 YHW |
2361 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2362 | tlv_bitmap); | |
f13cdd73 BP |
2363 | if (error) { |
2364 | return error; | |
2365 | } | |
5c7c16d8 YHW |
2366 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, |
2367 | tlv_bitmap); | |
f13cdd73 BP |
2368 | if (error) { |
2369 | return error; | |
2370 | } | |
f13cdd73 | 2371 | |
6fd6ed71 | 2372 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2373 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2374 | } | |
2375 | ||
73178f20 BP |
2376 | return nxm_reg_move_check(move, NULL); |
2377 | } | |
2378 | ||
914624f8 BP |
2379 | static enum ofperr |
2380 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2381 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2382 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2383 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2384 | { |
2385 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2386 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2387 | OBJECT_OFFSETOF(oacf, pad2), vl_mff_map, |
5c7c16d8 | 2388 | tlv_bitmap, ofpacts); |
914624f8 BP |
2389 | } |
2390 | ||
2391 | static enum ofperr | |
2392 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2393 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2394 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2395 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2396 | { |
2397 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2398 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2399 | OBJECT_OFFSETOF(oacf, pad3), vl_mff_map, |
5c7c16d8 | 2400 | tlv_bitmap, ofpacts); |
914624f8 BP |
2401 | } |
2402 | ||
c2d936a4 BP |
2403 | static enum ofperr |
2404 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2405 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2406 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2407 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
c2d936a4 | 2408 | { |
0a2869d5 | 2409 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2410 | enum ofperr error; |
2411 | ||
914624f8 | 2412 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2413 | move->src.ofs = ntohs(narm->src_ofs); |
2414 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2415 | move->dst.ofs = ntohs(narm->dst_ofs); |
2416 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2417 | |
0a2869d5 | 2418 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2419 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 | 2420 | |
5c7c16d8 YHW |
2421 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2422 | tlv_bitmap); | |
bad8a439 BP |
2423 | if (error) { |
2424 | return error; | |
2425 | } | |
5c7c16d8 YHW |
2426 | |
2427 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, | |
2428 | tlv_bitmap); | |
bad8a439 BP |
2429 | if (error) { |
2430 | return error; | |
2431 | } | |
04f48a68 | 2432 | |
6fd6ed71 | 2433 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2434 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2435 | } | |
2436 | ||
c2d936a4 BP |
2437 | return nxm_reg_move_check(move, NULL); |
2438 | } | |
d01c980f | 2439 | |
c2d936a4 BP |
2440 | static void |
2441 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2442 | enum ofp_version ofp_version, struct ofpbuf *out) |
2443 | { | |
914624f8 BP |
2444 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2445 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2446 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2447 | * probe for support. Until we have that ability, we currently prefer | |
2448 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2449 | * versions. */ | |
6fd6ed71 | 2450 | size_t start_ofs = out->size; |
73178f20 | 2451 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2452 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2453 | copy->n_bits = htons(move->dst.n_bits); |
2454 | copy->src_offset = htons(move->src.ofs); | |
2455 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2456 | out->size = out->size - sizeof copy->pad2; |
04f48a68 YHW |
2457 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2458 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
914624f8 BP |
2459 | } else if (ofp_version == OFP13_VERSION |
2460 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2461 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2462 | copy->n_bits = htons(move->dst.n_bits); | |
2463 | copy->src_offset = htons(move->src.ofs); | |
2464 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2465 | out->size = out->size - sizeof copy->pad3; |
04f48a68 YHW |
2466 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2467 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
73178f20 | 2468 | } else { |
bad8a439 | 2469 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2470 | narm->n_bits = htons(move->dst.n_bits); |
2471 | narm->src_ofs = htons(move->src.ofs); | |
2472 | narm->dst_ofs = htons(move->dst.ofs); | |
04f48a68 YHW |
2473 | nx_put_mff_header(out, move->src.field, 0, false); |
2474 | nx_put_mff_header(out, move->dst.field, 0, false); | |
73178f20 | 2475 | } |
bad8a439 | 2476 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2477 | } |
e9536ecb | 2478 | |
cab50449 | 2479 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2480 | parse_REG_MOVE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2481 | { |
efefbcae | 2482 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(pp->ofpacts); |
21b2fa61 | 2483 | return nxm_parse_reg_move(move, arg); |
c2d936a4 | 2484 | } |
0f3f3c3d | 2485 | |
c2d936a4 | 2486 | static void |
50f96b10 | 2487 | format_REG_MOVE(const struct ofpact_reg_move *a, |
efefbcae | 2488 | const struct ofpact_format_params *fp) |
c2d936a4 | 2489 | { |
efefbcae | 2490 | nxm_format_reg_move(a, fp->s); |
c2d936a4 BP |
2491 | } |
2492 | \f | |
7eb4b1f1 BP |
2493 | /* Action structure for OFPAT12_SET_FIELD. */ |
2494 | struct ofp12_action_set_field { | |
2495 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2496 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2497 | ||
2498 | /* Followed by: | |
2499 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2500 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2501 | * | |
2502 | * The "pad" member is the beginning of the above. */ | |
2503 | uint8_t pad[4]; | |
2504 | }; | |
2505 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2506 | ||
c2d936a4 BP |
2507 | /* Action structure for NXAST_REG_LOAD. |
2508 | * | |
2509 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2510 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2511 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2512 | * bit, and so on. | |
2513 | * | |
2514 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2515 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2516 | * loading them. | |
2517 | * | |
2518 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2519 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2520 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2521 | * also stored as one less than its true value: | |
2522 | * | |
2523 | * 15 6 5 0 | |
2524 | * +------------------------------+------------------+ | |
2525 | * | ofs | n_bits - 1 | | |
2526 | * +------------------------------+------------------+ | |
2527 | * | |
2528 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2529 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2530 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2531 | * OFPBAC_BAD_ARGUMENT. | |
2532 | */ | |
2533 | struct nx_action_reg_load { | |
2534 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2535 | ovs_be16 len; /* Length is 24. */ | |
2536 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2537 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2538 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2539 | ovs_be32 dst; /* Destination register. */ | |
2540 | ovs_be64 value; /* Immediate value. */ | |
2541 | }; | |
2542 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2543 | |
aad28f47 BP |
2544 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2545 | * followed by: | |
bad8a439 | 2546 | * |
aad28f47 BP |
2547 | * - An NXM/OXM header, value, and optionally a mask. |
2548 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2549 | * | |
2550 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2551 | |
c2d936a4 | 2552 | static enum ofperr |
7eb4b1f1 | 2553 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
04f48a68 | 2554 | bool may_mask, const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2555 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7fdb60a7 | 2556 | { |
0a2869d5 | 2557 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2558 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2559 | |
128684a6 JR |
2560 | union mf_value value, mask; |
2561 | const struct mf_field *field; | |
5c7c16d8 YHW |
2562 | enum ofperr error; |
2563 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, | |
2564 | may_mask ? &mask : NULL, tlv_bitmap); | |
178742f9 | 2565 | if (error) { |
178742f9 BP |
2566 | return (error == OFPERR_OFPBMC_BAD_MASK |
2567 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2568 | : error); | |
c2d936a4 | 2569 | } |
5c7c16d8 | 2570 | |
7eb4b1f1 | 2571 | if (!may_mask) { |
128684a6 | 2572 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2573 | } |
178742f9 | 2574 | |
6fd6ed71 | 2575 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2576 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2577 | } | |
7fdb60a7 | 2578 | |
178742f9 BP |
2579 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2580 | * Set-Field. */ | |
128684a6 | 2581 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2582 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2583 | } |
178742f9 | 2584 | |
c2d936a4 | 2585 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2586 | if (!field->writable) { |
178742f9 | 2587 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2588 | field->name); |
c2d936a4 BP |
2589 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2590 | } | |
c2d936a4 | 2591 | |
d3cb080e | 2592 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2593 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2594 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2595 | if (!mf_is_value_valid(field, &value) |
2596 | || (field->id == MFF_VLAN_VID | |
2597 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2598 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2599 | struct ds ds = DS_EMPTY_INITIALIZER; |
50f96b10 | 2600 | mf_format(field, &value, NULL, NULL, &ds); |
c2d936a4 | 2601 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2602 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2603 | ds_destroy(&ds); |
2604 | ||
2605 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2606 | } |
128684a6 JR |
2607 | |
2608 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2609 | return 0; |
7fdb60a7 SH |
2610 | } |
2611 | ||
7eb4b1f1 BP |
2612 | static enum ofperr |
2613 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2614 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2615 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2616 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2617 | { |
5c7c16d8 YHW |
2618 | return decode_ofpat_set_field(oasf, false, vl_mff_map, tlv_bitmap, |
2619 | ofpacts); | |
7eb4b1f1 BP |
2620 | } |
2621 | ||
2622 | static enum ofperr | |
2623 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2624 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2625 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2626 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2627 | { |
5c7c16d8 | 2628 | return decode_ofpat_set_field(oasf, true, vl_mff_map, tlv_bitmap, ofpacts); |
7eb4b1f1 BP |
2629 | } |
2630 | ||
2631 | static enum ofperr | |
2632 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2633 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2634 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2635 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7eb4b1f1 | 2636 | { |
7eb4b1f1 BP |
2637 | struct mf_subfield dst; |
2638 | enum ofperr error; | |
2639 | ||
7eb4b1f1 BP |
2640 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); |
2641 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
5c7c16d8 YHW |
2642 | error = mf_vl_mff_mf_from_nxm_header(ntohl(narl->dst), vl_mff_map, |
2643 | &dst.field, tlv_bitmap); | |
2644 | if (error) { | |
2645 | return error; | |
04f48a68 YHW |
2646 | } |
2647 | ||
7eb4b1f1 BP |
2648 | error = mf_check_dst(&dst, NULL); |
2649 | if (error) { | |
2650 | return error; | |
2651 | } | |
2652 | ||
2653 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2654 | * narl->value. */ | |
2655 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2656 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2657 | } | |
2658 | ||
128684a6 JR |
2659 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2660 | NULL); | |
7eb4b1f1 | 2661 | bitwise_put(ntohll(narl->value), |
128684a6 | 2662 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2663 | dst.n_bits); |
2664 | bitwise_put(UINT64_MAX, | |
128684a6 | 2665 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2666 | dst.n_bits); |
7eb4b1f1 BP |
2667 | return 0; |
2668 | } | |
2669 | ||
bad8a439 | 2670 | static enum ofperr |
aad28f47 | 2671 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
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) |
bad8a439 | 2675 | { |
aad28f47 BP |
2676 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2677 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2678 | |
128684a6 JR |
2679 | union mf_value value, mask; |
2680 | const struct mf_field *field; | |
5c7c16d8 YHW |
2681 | enum ofperr error; |
2682 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, &mask, | |
2683 | tlv_bitmap); | |
bad8a439 BP |
2684 | if (error) { |
2685 | return error; | |
2686 | } | |
5c7c16d8 | 2687 | |
6fd6ed71 | 2688 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2689 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2690 | } | |
2691 | ||
128684a6 JR |
2692 | if (!field->writable) { |
2693 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2694 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2695 | } | |
128684a6 JR |
2696 | |
2697 | /* Put value and mask. */ | |
2698 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2699 | return 0; |
2700 | } | |
2701 | ||
7fdb60a7 | 2702 | static void |
128684a6 JR |
2703 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2704 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2705 | { |
7eb4b1f1 | 2706 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2707 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2708 | size_t start_ofs = openflow->size; |
178742f9 | 2709 | union mf_value value; |
7fdb60a7 | 2710 | |
178742f9 | 2711 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2712 | |
7eb4b1f1 | 2713 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2714 | openflow->size = openflow->size - sizeof oasf->pad; |
04f48a68 | 2715 | nx_put_entry(openflow, mf_from_id(field), ofp_version, &value, NULL); |
178742f9 | 2716 | pad_ofpat(openflow, start_ofs); |
7fdb60a7 SH |
2717 | } |
2718 | ||
4b684612 BP |
2719 | static void |
2720 | put_reg_load(struct ofpbuf *openflow, | |
2721 | const struct mf_subfield *dst, uint64_t value) | |
2722 | { | |
2723 | ovs_assert(dst->n_bits <= 64); | |
2724 | ||
2725 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2726 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
04f48a68 | 2727 | narl->dst = htonl(nxm_header_from_mff(dst->field)); |
4b684612 BP |
2728 | narl->value = htonll(value); |
2729 | } | |
2730 | ||
7eb4b1f1 BP |
2731 | static bool |
2732 | next_load_segment(const struct ofpact_set_field *sf, | |
2733 | struct mf_subfield *dst, uint64_t *value) | |
2734 | { | |
fa078489 BP |
2735 | int n_bits = sf->field->n_bits; |
2736 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2737 | int start = dst->ofs + dst->n_bits; |
2738 | ||
fa078489 | 2739 | if (start < n_bits) { |
7eb4b1f1 | 2740 | dst->field = sf->field; |
128684a6 JR |
2741 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2742 | n_bits); | |
fa078489 | 2743 | if (dst->ofs < n_bits) { |
128684a6 JR |
2744 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2745 | dst->ofs + 1, | |
fa078489 | 2746 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2747 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2748 | return true; |
2749 | } | |
2750 | } | |
2751 | return false; | |
2752 | } | |
178742f9 | 2753 | |
7eb4b1f1 | 2754 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2755 | static void |
c2d936a4 | 2756 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2757 | { |
bad8a439 | 2758 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2759 | * experimenter OXM or is variable length (or if it came in as |
2760 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2761 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2762 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2763 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 2764 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 2765 | size_t start_ofs = openflow->size; |
bad8a439 | 2766 | |
aad28f47 BP |
2767 | eah = put_NXAST_REG_LOAD2(openflow); |
2768 | openflow->size = openflow->size - sizeof eah->pad; | |
04f48a68 | 2769 | nx_put_entry(openflow, sf->field, 0, sf->value, |
128684a6 | 2770 | ofpact_set_field_mask(sf)); |
bad8a439 BP |
2771 | pad_ofpat(openflow, start_ofs); |
2772 | } else { | |
2773 | struct mf_subfield dst; | |
2774 | uint64_t value; | |
7eb4b1f1 | 2775 | |
bad8a439 BP |
2776 | dst.ofs = dst.n_bits = 0; |
2777 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 2778 | put_reg_load(openflow, &dst, value); |
bad8a439 | 2779 | } |
7fdb60a7 SH |
2780 | } |
2781 | } | |
2782 | ||
7eb4b1f1 BP |
2783 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2784 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 2785 | * |
c2d936a4 BP |
2786 | * We check only meta-flow types that can appear within set field actions and |
2787 | * that have a mapping to compatible action types. These struct mf_field | |
2788 | * definitions have a defined OXM or NXM header value and specify the field as | |
2789 | * writable. */ | |
2790 | static void | |
2791 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
2792 | enum ofp_version ofp_version, | |
2793 | struct ofpbuf *out) | |
7fdb60a7 | 2794 | { |
c2d936a4 BP |
2795 | switch ((int) sf->field->id) { |
2796 | case MFF_VLAN_TCI: { | |
128684a6 | 2797 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
2798 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
2799 | uint16_t vid = vlan_tci_to_vid(tci); | |
2800 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
2801 | ||
2802 | if (ofp_version < OFP11_VERSION) { | |
2803 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
2804 | * | |
2805 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2806 | * If CFI=0, strip VLAN header, if any. | |
2807 | */ | |
2808 | if (cfi) { | |
2809 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2810 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
2811 | } else { | |
2812 | put_OFPAT10_STRIP_VLAN(out); | |
2813 | } | |
2814 | } else { | |
2815 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
2816 | * | |
2817 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2818 | * OpenFlow 1.1 set actions only apply if the packet | |
2819 | * already has VLAN tags. To be sure that is the case | |
2820 | * we have to push a VLAN header. As we do not support | |
2821 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
2822 | * header already exists. This may backfire, however, | |
2823 | * when we start supporting multiple layers of VLANs. | |
2824 | * If CFI=0, strip VLAN header, if any. | |
2825 | */ | |
2826 | if (cfi) { | |
2827 | /* Push a VLAN tag, if one was not seen at action validation | |
2828 | * time. */ | |
2829 | if (!sf->flow_has_vlan) { | |
2830 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
2831 | } | |
2832 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2833 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
2834 | } else { | |
2835 | /* If the flow did not match on vlan, we have no way of | |
2836 | * knowing if the vlan tag exists, so we must POP just to be | |
2837 | * sure. */ | |
2838 | put_OFPAT11_POP_VLAN(out); | |
2839 | } | |
2840 | } | |
2841 | break; | |
2842 | } | |
7fdb60a7 | 2843 | |
c2d936a4 | 2844 | case MFF_VLAN_VID: { |
128684a6 | 2845 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
2846 | if (ofp_version == OFP10_VERSION) { |
2847 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2848 | } else { | |
2849 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2850 | } | |
2851 | break; | |
2852 | } | |
2853 | ||
2854 | case MFF_VLAN_PCP: | |
2855 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 2856 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 2857 | } else { |
128684a6 | 2858 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
2859 | } |
2860 | break; | |
2861 | ||
2862 | case MFF_ETH_SRC: | |
128684a6 | 2863 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2864 | break; |
2865 | ||
2866 | case MFF_ETH_DST: | |
128684a6 | 2867 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2868 | break; |
2869 | ||
2870 | case MFF_IPV4_SRC: | |
128684a6 | 2871 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2872 | break; |
2873 | ||
2874 | case MFF_IPV4_DST: | |
128684a6 | 2875 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2876 | break; |
2877 | ||
2878 | case MFF_IP_DSCP: | |
128684a6 | 2879 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
2880 | break; |
2881 | ||
2882 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 2883 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
2884 | break; |
2885 | ||
1a1e1a49 EG |
2886 | case MFF_IP_ECN: { |
2887 | struct ofpact_ecn ip_ecn = { .ecn = sf->value->u8 }; | |
2888 | encode_SET_IP_ECN(&ip_ecn, ofp_version, out); | |
4b684612 | 2889 | break; |
1a1e1a49 | 2890 | } |
4b684612 | 2891 | |
c2d936a4 BP |
2892 | case MFF_TCP_SRC: |
2893 | case MFF_UDP_SRC: | |
128684a6 | 2894 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
2895 | break; |
2896 | ||
2897 | case MFF_TCP_DST: | |
2898 | case MFF_UDP_DST: | |
128684a6 | 2899 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
2900 | break; |
2901 | ||
2902 | default: | |
2903 | set_field_to_nxast(sf, out); | |
2904 | break; | |
7fdb60a7 SH |
2905 | } |
2906 | } | |
2907 | ||
7eb4b1f1 BP |
2908 | static void |
2909 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
2910 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2911 | { | |
2912 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 2913 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
2914 | |
2915 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 2916 | out->size = out->size - sizeof oasf->pad; |
04f48a68 | 2917 | nx_put_entry(out, sf->field, ofp_version, sf->value, |
128684a6 | 2918 | ofpact_set_field_mask(sf)); |
7eb4b1f1 BP |
2919 | pad_ofpat(out, start_ofs); |
2920 | } | |
2921 | ||
c2d936a4 BP |
2922 | static void |
2923 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
2924 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2925 | { | |
7eb4b1f1 | 2926 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
2927 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
2928 | * entirely). */ | |
7eb4b1f1 | 2929 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
2930 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
2931 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
2932 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
2933 | set_field_to_nxast(sf, out); |
2934 | } else if (ofp_version < OFP12_VERSION) { | |
2935 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 2936 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 2937 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
2938 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
2939 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
2940 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 2941 | } else { |
7eb4b1f1 BP |
2942 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
2943 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
2944 | * so encode it as reg_load. */ | |
2945 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
2946 | } |
2947 | } | |
2948 | ||
36b43aa6 JS |
2949 | /* Parses the input argument 'arg' into the key, value, and delimiter |
2950 | * components that are common across the reg_load and set_field action format. | |
2951 | * | |
2952 | * With an argument like "1->metadata", sets the following pointers to | |
2953 | * point within 'arg': | |
2954 | * key: "metadata" | |
2955 | * value: "1" | |
2956 | * delim: "->" | |
2957 | * | |
2958 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2959 | * error. The caller is responsible for freeing the returned string. */ | |
2960 | static char * OVS_WARN_UNUSED_RESULT | |
2961 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
2962 | { | |
2963 | char *value_end; | |
2964 | ||
2965 | *value = arg; | |
2966 | value_end = strstr(arg, "->"); | |
2967 | *key = value_end + strlen("->"); | |
2968 | if (delim) { | |
2969 | *delim = value_end; | |
2970 | } | |
2971 | ||
2972 | if (!value_end) { | |
2973 | return xasprintf("%s: missing `->'", arg); | |
2974 | } | |
2975 | if (strlen(value_end) <= strlen("->")) { | |
2976 | return xasprintf("%s: missing field name following `->'", arg); | |
2977 | } | |
2978 | ||
2979 | return NULL; | |
2980 | } | |
2981 | ||
c2d936a4 | 2982 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
efefbcae | 2983 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
2984 | * |
2985 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2986 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2987 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2988 | set_field_parse__(char *arg, const struct ofpact_parse_params *pp) |
7fdb60a7 | 2989 | { |
c2d936a4 BP |
2990 | char *value; |
2991 | char *delim; | |
2992 | char *key; | |
2993 | const struct mf_field *mf; | |
128684a6 | 2994 | union mf_value sf_value, sf_mask; |
c2d936a4 | 2995 | char *error; |
7fdb60a7 | 2996 | |
36b43aa6 JS |
2997 | error = set_field_split_str(arg, &key, &value, &delim); |
2998 | if (error) { | |
2999 | return error; | |
c2d936a4 | 3000 | } |
e3f8f887 | 3001 | |
c2d936a4 BP |
3002 | mf = mf_from_name(key); |
3003 | if (!mf) { | |
3004 | return xasprintf("%s is not a valid OXM field name", key); | |
3005 | } | |
3006 | if (!mf->writable) { | |
3007 | return xasprintf("%s is read-only", key); | |
3008 | } | |
128684a6 | 3009 | |
c2d936a4 | 3010 | delim[0] = '\0'; |
efefbcae | 3011 | error = mf_parse(mf, value, pp->port_map, &sf_value, &sf_mask); |
7fdb60a7 SH |
3012 | if (error) { |
3013 | return error; | |
3014 | } | |
3015 | ||
128684a6 | 3016 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 3017 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
3018 | } |
3019 | ||
efefbcae | 3020 | *pp->usable_protocols &= mf->usable_protocols_exact; |
128684a6 | 3021 | |
efefbcae | 3022 | ofpact_put_set_field(pp->ofpacts, mf, &sf_value, &sf_mask); |
c2d936a4 | 3023 | return NULL; |
7fdb60a7 SH |
3024 | } |
3025 | ||
c2d936a4 | 3026 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
efefbcae | 3027 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3028 | * |
3029 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3030 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3031 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3032 | parse_SET_FIELD(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3033 | { |
3034 | char *copy = xstrdup(arg); | |
efefbcae | 3035 | char *error = set_field_parse__(copy, pp); |
c2d936a4 BP |
3036 | free(copy); |
3037 | return error; | |
3038 | } | |
a359d5ad | 3039 | |
cab50449 | 3040 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3041 | parse_reg_load(char *arg, const struct ofpact_parse_params *pp) |
7eb4b1f1 | 3042 | { |
7eb4b1f1 | 3043 | struct mf_subfield dst; |
36b43aa6 | 3044 | char *key, *value_str; |
81270993 | 3045 | union mf_value value; |
7eb4b1f1 BP |
3046 | char *error; |
3047 | ||
36b43aa6 JS |
3048 | error = set_field_split_str(arg, &key, &value_str, NULL); |
3049 | if (error) { | |
3050 | return error; | |
7eb4b1f1 | 3051 | } |
36b43aa6 JS |
3052 | |
3053 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
3054 | if (error) { |
3055 | return error; | |
3056 | } | |
3057 | ||
81270993 JS |
3058 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
3059 | &key)) { | |
3060 | return xasprintf("%s: cannot parse integer value", arg); | |
3061 | } | |
3062 | ||
3063 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
3064 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
3065 | struct ds ds; | |
3066 | ||
3067 | ds_init(&ds); | |
50f96b10 | 3068 | mf_format(dst.field, &value, NULL, NULL, &ds); |
81270993 JS |
3069 | error = xasprintf("%s: value %s does not fit into %d bits", |
3070 | arg, ds_cstr(&ds), dst.n_bits); | |
3071 | ds_destroy(&ds); | |
3072 | return error; | |
7eb4b1f1 BP |
3073 | } |
3074 | ||
efefbcae BP |
3075 | struct ofpact_set_field *sf = ofpact_put_reg_load(pp->ofpacts, dst.field, |
3076 | NULL, NULL); | |
81270993 | 3077 | |
128684a6 JR |
3078 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
3079 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
3080 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
3081 | dst.n_bits); | |
7eb4b1f1 BP |
3082 | return NULL; |
3083 | } | |
3084 | ||
c2d936a4 | 3085 | static void |
50f96b10 | 3086 | format_SET_FIELD(const struct ofpact_set_field *a, |
efefbcae | 3087 | const struct ofpact_format_params *fp) |
c2d936a4 | 3088 | { |
7eb4b1f1 BP |
3089 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
3090 | struct mf_subfield dst; | |
3091 | uint64_t value; | |
3092 | ||
3093 | dst.ofs = dst.n_bits = 0; | |
3094 | while (next_load_segment(a, &dst, &value)) { | |
efefbcae | 3095 | ds_put_format(fp->s, "%sload:%s%#"PRIx64"%s->%s", |
b1c5bf1f QM |
3096 | colors.special, colors.end, value, |
3097 | colors.special, colors.end); | |
efefbcae BP |
3098 | mf_format_subfield(&dst, fp->s); |
3099 | ds_put_char(fp->s, ','); | |
7eb4b1f1 | 3100 | } |
efefbcae | 3101 | ds_chomp(fp->s, ','); |
7eb4b1f1 | 3102 | } else { |
efefbcae BP |
3103 | ds_put_format(fp->s, "%sset_field:%s", colors.special, colors.end); |
3104 | mf_format(a->field, a->value, ofpact_set_field_mask(a), | |
3105 | fp->port_map, fp->s); | |
3106 | ds_put_format(fp->s, "%s->%s%s", | |
b1c5bf1f | 3107 | colors.special, colors.end, a->field->name); |
7eb4b1f1 BP |
3108 | } |
3109 | } | |
3110 | ||
128684a6 JR |
3111 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
3112 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
3113 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
3114 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3115 | struct ofpact_set_field * | |
3116 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3117 | const void *value, const void *mask) | |
3118 | { | |
3119 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3120 | sf->field = field; | |
3121 | ||
3122 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3123 | * caller may fill in the value and mask itself. */ | |
3124 | if (value) { | |
3125 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3126 | sf = ofpacts->header; | |
3127 | memcpy(sf->value, value, field->n_bytes); | |
3128 | if (mask) { | |
3129 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3130 | } else { | |
3131 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3132 | } | |
3133 | } else { | |
3134 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3135 | sf = ofpacts->header; | |
3136 | } | |
3137 | /* Update length. */ | |
3138 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3139 | ||
3140 | return sf; | |
3141 | } | |
3142 | ||
7eb4b1f1 BP |
3143 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3144 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3145 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3146 | * that was the way that the action was expressed when it came into OVS or for | |
3147 | * backward compatibility. */ | |
3148 | struct ofpact_set_field * | |
128684a6 JR |
3149 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3150 | const void *value, const void *mask) | |
7eb4b1f1 | 3151 | { |
128684a6 JR |
3152 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3153 | mask); | |
7eb4b1f1 | 3154 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3155 | |
7eb4b1f1 | 3156 | return sf; |
c2d936a4 | 3157 | } |
128684a6 JR |
3158 | |
3159 | struct ofpact_set_field * | |
3160 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3161 | const void *value, const void *mask) | |
3162 | { | |
3163 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3164 | mask); | |
3165 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3166 | ||
3167 | return sf; | |
3168 | } | |
3169 | ||
c2d936a4 BP |
3170 | \f |
3171 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3172 | * | |
3173 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3174 | * top of the stack. | |
3175 | */ | |
3176 | struct nx_action_stack { | |
3177 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3178 | ovs_be16 len; /* Length is 16. */ | |
3179 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3180 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3181 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3182 | /* Followed by: |
3183 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3184 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3185 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3186 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3187 | }; |
c2d936a4 | 3188 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3189 | |
bad8a439 | 3190 | static enum ofperr |
c2d936a4 | 3191 | decode_stack_action(const struct nx_action_stack *nasp, |
5c7c16d8 | 3192 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
c2d936a4 | 3193 | struct ofpact_stack *stack_action) |
a359d5ad | 3194 | { |
5c7c16d8 | 3195 | enum ofperr error; |
c2d936a4 | 3196 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3197 | |
0a2869d5 | 3198 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3199 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
5c7c16d8 YHW |
3200 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, |
3201 | &stack_action->subfield.field, NULL, | |
3202 | tlv_bitmap); | |
bad8a439 BP |
3203 | if (error) { |
3204 | return error; | |
3205 | } | |
5c7c16d8 | 3206 | |
6fd6ed71 | 3207 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3208 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3209 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3210 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3211 | } | |
3212 | ||
3213 | return 0; | |
a359d5ad IY |
3214 | } |
3215 | ||
c2d936a4 BP |
3216 | static enum ofperr |
3217 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3218 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3219 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3220 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
a359d5ad | 3221 | { |
c2d936a4 | 3222 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
5c7c16d8 YHW |
3223 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3224 | push); | |
bad8a439 | 3225 | return error ? error : nxm_stack_push_check(push, NULL); |
a359d5ad IY |
3226 | } |
3227 | ||
c2d936a4 BP |
3228 | static enum ofperr |
3229 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3230 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3231 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3232 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
084c53de | 3233 | { |
c2d936a4 | 3234 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
5c7c16d8 YHW |
3235 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3236 | pop); | |
bad8a439 | 3237 | return error ? error : nxm_stack_pop_check(pop, NULL); |
084c53de BP |
3238 | } |
3239 | ||
c2d936a4 BP |
3240 | static void |
3241 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3242 | struct nx_action_stack *nasp) | |
c0621c39 | 3243 | { |
bad8a439 BP |
3244 | struct ofpbuf b; |
3245 | ovs_be16 n_bits; | |
3246 | ||
c2d936a4 | 3247 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3248 | |
3249 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3250 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
04f48a68 | 3251 | nx_put_mff_header(&b, stack_action->subfield.field, 0, false); |
bad8a439 BP |
3252 | n_bits = htons(stack_action->subfield.n_bits); |
3253 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3254 | } |
3255 | ||
c2d936a4 BP |
3256 | static void |
3257 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3258 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3259 | { | |
3260 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3261 | } | |
8e97815e | 3262 | |
c2d936a4 BP |
3263 | static void |
3264 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3265 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3266 | { |
c2d936a4 BP |
3267 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3268 | } | |
8e97815e | 3269 | |
cab50449 | 3270 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3271 | parse_STACK_PUSH(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3272 | { |
efefbcae | 3273 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(pp->ofpacts), arg); |
c2d936a4 | 3274 | } |
8e97815e | 3275 | |
cab50449 | 3276 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3277 | parse_STACK_POP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3278 | { |
efefbcae | 3279 | return nxm_parse_stack_action(ofpact_put_STACK_POP(pp->ofpacts), arg); |
8e97815e BP |
3280 | } |
3281 | ||
c2d936a4 | 3282 | static void |
50f96b10 | 3283 | format_STACK_PUSH(const struct ofpact_stack *a, |
efefbcae | 3284 | const struct ofpact_format_params *fp) |
8e97815e | 3285 | { |
efefbcae | 3286 | nxm_format_stack_push(a, fp->s); |
c2d936a4 | 3287 | } |
8e97815e | 3288 | |
c2d936a4 | 3289 | static void |
50f96b10 | 3290 | format_STACK_POP(const struct ofpact_stack *a, |
efefbcae | 3291 | const struct ofpact_format_params *fp) |
c2d936a4 | 3292 | { |
efefbcae | 3293 | nxm_format_stack_pop(a, fp->s); |
c2d936a4 BP |
3294 | } |
3295 | \f | |
3296 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3297 | * | |
3298 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3299 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3300 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3301 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3302 | * | |
3303 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3304 | * sent only to controllers with id 0.) | |
3305 | */ | |
3306 | struct nx_action_cnt_ids { | |
3307 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3308 | ovs_be16 len; /* Length including slaves. */ | |
3309 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3310 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3311 | ||
3312 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3313 | uint8_t zeros[4]; /* Must be zero. */ | |
3314 | ||
3315 | /* Followed by 1 or more controller ids. | |
3316 | * | |
3317 | * uint16_t cnt_ids[]; // Controller ids. | |
3318 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3319 | */ | |
3320 | }; | |
3321 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3322 | ||
3323 | static enum ofperr | |
3324 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3325 | { | |
3326 | uint16_t id = 0; | |
3327 | struct ofpact_cnt_ids *ids; | |
3328 | enum ofperr error = 0; | |
3329 | ||
3330 | ids = ofpact_put_DEC_TTL(out); | |
3331 | ids->n_controllers = 1; | |
3332 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3333 | ids = out->header; |
ce058104 | 3334 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3335 | return error; |
3336 | } | |
3337 | ||
3338 | static enum ofperr | |
3339 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3340 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3341 | struct ofpbuf *out) |
3342 | { | |
3343 | struct ofpact_cnt_ids *ids; | |
3344 | size_t ids_size; | |
3345 | int i; | |
3346 | ||
3347 | ids = ofpact_put_DEC_TTL(out); | |
3348 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3349 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3350 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3351 | ||
3352 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3353 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3354 | } |
c2d936a4 BP |
3355 | |
3356 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3357 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3358 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
fd13c6b5 | 3359 | "are required for %u controllers.", |
c2d936a4 BP |
3360 | ids_size, ids->n_controllers * sizeof(ovs_be16), |
3361 | ids->n_controllers); | |
3362 | return OFPERR_OFPBAC_BAD_LEN; | |
3363 | } | |
3364 | ||
3365 | for (i = 0; i < ids->n_controllers; i++) { | |
3366 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3367 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3368 | ids = out->header; |
c2d936a4 BP |
3369 | } |
3370 | ||
ce058104 | 3371 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3372 | |
3373 | return 0; | |
8e97815e BP |
3374 | } |
3375 | ||
c2d936a4 BP |
3376 | static void |
3377 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3378 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3379 | { |
c2d936a4 BP |
3380 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3381 | || dec_ttl->n_controllers != 1 | |
3382 | || dec_ttl->cnt_ids[0] != 0) { | |
3383 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3384 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3385 | ovs_be16 *ids; | |
3386 | size_t i; | |
8e97815e | 3387 | |
c2d936a4 BP |
3388 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3389 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3390 | ||
3391 | ids = ofpbuf_put_zeros(out, ids_len); | |
3392 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3393 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3394 | } |
c2d936a4 BP |
3395 | } else { |
3396 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3397 | } |
8e97815e BP |
3398 | } |
3399 | ||
c2d936a4 | 3400 | static void |
efefbcae | 3401 | parse_noargs_dec_ttl(const struct ofpact_parse_params *pp) |
d01c980f | 3402 | { |
c2d936a4 BP |
3403 | struct ofpact_cnt_ids *ids; |
3404 | uint16_t id = 0; | |
3405 | ||
efefbcae BP |
3406 | ofpact_put_DEC_TTL(pp->ofpacts); |
3407 | ofpbuf_put(pp->ofpacts, &id, sizeof id); | |
3408 | ids = pp->ofpacts->header; | |
c2d936a4 | 3409 | ids->n_controllers++; |
efefbcae | 3410 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
d01c980f BP |
3411 | } |
3412 | ||
cab50449 | 3413 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3414 | parse_DEC_TTL(char *arg, const struct ofpact_parse_params *pp) |
d01c980f | 3415 | { |
c2d936a4 | 3416 | if (*arg == '\0') { |
efefbcae | 3417 | parse_noargs_dec_ttl(pp); |
c2d936a4 BP |
3418 | } else { |
3419 | struct ofpact_cnt_ids *ids; | |
3420 | char *cntr; | |
3421 | ||
efefbcae | 3422 | ids = ofpact_put_DEC_TTL(pp->ofpacts); |
c2d936a4 BP |
3423 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; |
3424 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3425 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3426 | uint16_t id = atoi(cntr); | |
3427 | ||
efefbcae BP |
3428 | ofpbuf_put(pp->ofpacts, &id, sizeof id); |
3429 | ids = pp->ofpacts->header; | |
c2d936a4 BP |
3430 | ids->n_controllers++; |
3431 | } | |
3432 | if (!ids->n_controllers) { | |
3433 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3434 | "id."); | |
3435 | } | |
efefbcae | 3436 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
c2d936a4 BP |
3437 | } |
3438 | return NULL; | |
d01c980f BP |
3439 | } |
3440 | ||
c2d936a4 | 3441 | static void |
50f96b10 | 3442 | format_DEC_TTL(const struct ofpact_cnt_ids *a, |
efefbcae | 3443 | const struct ofpact_format_params *fp) |
d01c980f | 3444 | { |
c2d936a4 | 3445 | size_t i; |
d01c980f | 3446 | |
efefbcae | 3447 | ds_put_format(fp->s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3448 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
efefbcae | 3449 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3450 | for (i = 0; i < a->n_controllers; i++) { |
3451 | if (i) { | |
efefbcae | 3452 | ds_put_cstr(fp->s, ","); |
d01c980f | 3453 | } |
efefbcae | 3454 | ds_put_format(fp->s, "%"PRIu16, a->cnt_ids[i]); |
c2d936a4 | 3455 | } |
efefbcae | 3456 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3457 | } |
3458 | } | |
c2d936a4 BP |
3459 | \f |
3460 | /* Set MPLS label actions. */ | |
d01c980f BP |
3461 | |
3462 | static enum ofperr | |
f3cd3ac7 JS |
3463 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3464 | enum ofp_version ofp_version OVS_UNUSED, | |
3465 | struct ofpbuf *out) | |
d01c980f | 3466 | { |
c2d936a4 BP |
3467 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3468 | return 0; | |
3469 | } | |
d01c980f | 3470 | |
c2d936a4 BP |
3471 | static void |
3472 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3473 | enum ofp_version ofp_version, | |
3474 | struct ofpbuf *out) | |
3475 | { | |
3476 | if (ofp_version < OFP12_VERSION) { | |
3477 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3478 | } else { | |
128684a6 | 3479 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3480 | } |
c2d936a4 | 3481 | } |
d01c980f | 3482 | |
cab50449 | 3483 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3484 | parse_SET_MPLS_LABEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3485 | { |
efefbcae BP |
3486 | struct ofpact_mpls_label *mpls_label |
3487 | = ofpact_put_SET_MPLS_LABEL(pp->ofpacts); | |
c2d936a4 BP |
3488 | if (*arg == '\0') { |
3489 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3490 | } |
c2d936a4 BP |
3491 | |
3492 | mpls_label->label = htonl(atoi(arg)); | |
3493 | return NULL; | |
d01c980f BP |
3494 | } |
3495 | ||
3496 | static void | |
50f96b10 | 3497 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, |
efefbcae | 3498 | const struct ofpact_format_params *fp) |
d01c980f | 3499 | { |
efefbcae | 3500 | ds_put_format(fp->s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
b1c5bf1f QM |
3501 | colors.paren, colors.end, ntohl(a->label), |
3502 | colors.paren, colors.end); | |
d01c980f | 3503 | } |
c2d936a4 BP |
3504 | \f |
3505 | /* Set MPLS TC actions. */ | |
d01c980f | 3506 | |
c2d936a4 | 3507 | static enum ofperr |
f3cd3ac7 JS |
3508 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3509 | enum ofp_version ofp_version OVS_UNUSED, | |
3510 | struct ofpbuf *out) | |
d01c980f | 3511 | { |
c2d936a4 BP |
3512 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3513 | return 0; | |
3514 | } | |
d01c980f | 3515 | |
c2d936a4 BP |
3516 | static void |
3517 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3518 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3519 | { | |
3520 | if (ofp_version < OFP12_VERSION) { | |
3521 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3522 | } else { | |
128684a6 | 3523 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3524 | } |
c2d936a4 | 3525 | } |
8f2cded4 | 3526 | |
cab50449 | 3527 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3528 | parse_SET_MPLS_TC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3529 | { |
efefbcae | 3530 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(pp->ofpacts); |
d01c980f | 3531 | |
c2d936a4 BP |
3532 | if (*arg == '\0') { |
3533 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3534 | } |
3535 | ||
c2d936a4 BP |
3536 | mpls_tc->tc = atoi(arg); |
3537 | return NULL; | |
3538 | } | |
d01c980f | 3539 | |
c2d936a4 | 3540 | static void |
50f96b10 | 3541 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, |
efefbcae | 3542 | const struct ofpact_format_params *fp) |
c2d936a4 | 3543 | { |
efefbcae | 3544 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3545 | colors.paren, colors.end, a->tc, |
3546 | colors.paren, colors.end); | |
c2d936a4 BP |
3547 | } |
3548 | \f | |
3549 | /* Set MPLS TTL actions. */ | |
d01c980f | 3550 | |
c2d936a4 | 3551 | static enum ofperr |
f3cd3ac7 JS |
3552 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3553 | enum ofp_version ofp_version OVS_UNUSED, | |
3554 | struct ofpbuf *out) | |
c2d936a4 BP |
3555 | { |
3556 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3557 | return 0; | |
3558 | } | |
638a19b0 | 3559 | |
c2d936a4 BP |
3560 | static void |
3561 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3562 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3563 | { | |
3564 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3565 | } | |
638a19b0 | 3566 | |
c2d936a4 | 3567 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
efefbcae | 3568 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3569 | * |
3570 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3571 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3572 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3573 | parse_SET_MPLS_TTL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3574 | { |
efefbcae | 3575 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(pp->ofpacts); |
d01c980f | 3576 | |
c2d936a4 BP |
3577 | if (*arg == '\0') { |
3578 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3579 | } |
7fdb60a7 | 3580 | |
c2d936a4 BP |
3581 | mpls_ttl->ttl = atoi(arg); |
3582 | return NULL; | |
3583 | } | |
4cceacb9 | 3584 | |
c2d936a4 | 3585 | static void |
50f96b10 | 3586 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, |
efefbcae | 3587 | const struct ofpact_format_params *fp) |
c2d936a4 | 3588 | { |
efefbcae | 3589 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3590 | colors.paren, colors.end, a->ttl, |
3591 | colors.paren, colors.end); | |
c2d936a4 BP |
3592 | } |
3593 | \f | |
3594 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3595 | |
c2d936a4 BP |
3596 | static enum ofperr |
3597 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3598 | { | |
3599 | ofpact_put_DEC_MPLS_TTL(out); | |
3600 | return 0; | |
3601 | } | |
8dd54666 | 3602 | |
c2d936a4 BP |
3603 | static void |
3604 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3605 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3606 | { | |
3607 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3608 | } | |
3609 | ||
cab50449 | 3610 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3611 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 3612 | { |
efefbcae | 3613 | ofpact_put_DEC_MPLS_TTL(pp->ofpacts); |
c2d936a4 BP |
3614 | return NULL; |
3615 | } | |
3616 | ||
3617 | static void | |
50f96b10 | 3618 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 3619 | const struct ofpact_format_params *fp) |
c2d936a4 | 3620 | { |
efefbcae | 3621 | ds_put_format(fp->s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 BP |
3622 | } |
3623 | \f | |
3624 | /* Push MPLS label action. */ | |
3625 | ||
3626 | static enum ofperr | |
f3cd3ac7 JS |
3627 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3628 | enum ofp_version ofp_version OVS_UNUSED, | |
3629 | struct ofpbuf *out) | |
c2d936a4 BP |
3630 | { |
3631 | struct ofpact_push_mpls *oam; | |
3632 | ||
3633 | if (!eth_type_mpls(ethertype)) { | |
3634 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3635 | } |
c2d936a4 BP |
3636 | oam = ofpact_put_PUSH_MPLS(out); |
3637 | oam->ethertype = ethertype; | |
d01c980f | 3638 | |
c2d936a4 BP |
3639 | return 0; |
3640 | } | |
3641 | ||
3642 | static void | |
3643 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3644 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3645 | { | |
3646 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3647 | } | |
3648 | ||
cab50449 | 3649 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3650 | parse_PUSH_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3651 | { |
3652 | uint16_t ethertype; | |
3653 | char *error; | |
3654 | ||
3655 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3656 | if (!error) { | |
efefbcae | 3657 | ofpact_put_PUSH_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
d01c980f BP |
3658 | } |
3659 | return error; | |
3660 | } | |
c2d936a4 BP |
3661 | |
3662 | static void | |
50f96b10 | 3663 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, |
efefbcae | 3664 | const struct ofpact_format_params *fp) |
c2d936a4 | 3665 | { |
efefbcae | 3666 | ds_put_format(fp->s, "%spush_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 3667 | colors.param, colors.end, ntohs(a->ethertype)); |
c2d936a4 | 3668 | } |
d01c980f | 3669 | \f |
c2d936a4 BP |
3670 | /* Pop MPLS label action. */ |
3671 | ||
3672 | static enum ofperr | |
f3cd3ac7 JS |
3673 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3674 | enum ofp_version ofp_version OVS_UNUSED, | |
3675 | struct ofpbuf *out) | |
57ad4e9e | 3676 | { |
c2d936a4 BP |
3677 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3678 | return 0; | |
3679 | } | |
57ad4e9e | 3680 | |
c2d936a4 BP |
3681 | static void |
3682 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
3683 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3684 | { | |
3685 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
3686 | } | |
3687 | ||
cab50449 | 3688 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3689 | parse_POP_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3690 | { |
3691 | uint16_t ethertype; | |
3692 | char *error; | |
3693 | ||
3694 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
3695 | if (!error) { | |
efefbcae | 3696 | ofpact_put_POP_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
57ad4e9e | 3697 | } |
c2d936a4 | 3698 | return error; |
57ad4e9e BP |
3699 | } |
3700 | ||
ba2fe8e9 | 3701 | static void |
50f96b10 | 3702 | format_POP_MPLS(const struct ofpact_pop_mpls *a, |
efefbcae | 3703 | const struct ofpact_format_params *fp) |
ba2fe8e9 | 3704 | { |
efefbcae | 3705 | ds_put_format(fp->s, "%spop_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 3706 | colors.param, colors.end, ntohs(a->ethertype)); |
ba2fe8e9 | 3707 | } |
c2d936a4 BP |
3708 | \f |
3709 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 3710 | |
f25d0cf3 | 3711 | static enum ofperr |
f3cd3ac7 JS |
3712 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
3713 | enum ofp_version ofp_version OVS_UNUSED, | |
3714 | struct ofpbuf *out) | |
f25d0cf3 | 3715 | { |
c2d936a4 BP |
3716 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
3717 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
3718 | tunnel->tun_id = tun_id; | |
3719 | return 0; | |
3720 | } | |
f25d0cf3 | 3721 | |
c2d936a4 | 3722 | static enum ofperr |
f3cd3ac7 JS |
3723 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
3724 | enum ofp_version ofp_version OVS_UNUSED, | |
3725 | struct ofpbuf *out) | |
c2d936a4 BP |
3726 | { |
3727 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
3728 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
3729 | tunnel->tun_id = tun_id; | |
3730 | return 0; | |
3731 | } | |
f25d0cf3 | 3732 | |
c2d936a4 BP |
3733 | static void |
3734 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
3735 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3736 | { | |
3737 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 3738 | |
c2d936a4 BP |
3739 | if (ofp_version < OFP12_VERSION) { |
3740 | if (tun_id <= UINT32_MAX | |
3741 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
3742 | put_NXAST_SET_TUNNEL(out, tun_id); | |
3743 | } else { | |
3744 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 3745 | } |
c2d936a4 | 3746 | } else { |
128684a6 | 3747 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
3748 | } |
3749 | } | |
f25d0cf3 | 3750 | |
cab50449 | 3751 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
3752 | parse_set_tunnel(char *arg, enum ofp_raw_action_type raw, |
3753 | const struct ofpact_parse_params *pp) | |
c2d936a4 BP |
3754 | { |
3755 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 3756 | |
efefbcae | 3757 | tunnel = ofpact_put_SET_TUNNEL(pp->ofpacts); |
c2d936a4 BP |
3758 | tunnel->ofpact.raw = raw; |
3759 | return str_to_u64(arg, &tunnel->tun_id); | |
3760 | } | |
8621547c | 3761 | |
cab50449 | 3762 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3763 | parse_SET_TUNNEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3764 | { |
efefbcae | 3765 | return parse_set_tunnel(arg, NXAST_RAW_SET_TUNNEL, pp); |
c2d936a4 | 3766 | } |
8621547c | 3767 | |
c2d936a4 | 3768 | static void |
50f96b10 | 3769 | format_SET_TUNNEL(const struct ofpact_tunnel *a, |
efefbcae | 3770 | const struct ofpact_format_params *fp) |
c2d936a4 | 3771 | { |
efefbcae | 3772 | ds_put_format(fp->s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
3773 | (a->tun_id > UINT32_MAX |
3774 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 3775 | colors.end, a->tun_id); |
c2d936a4 BP |
3776 | } |
3777 | \f | |
3778 | /* Set queue action. */ | |
8621547c | 3779 | |
c2d936a4 | 3780 | static enum ofperr |
f3cd3ac7 JS |
3781 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
3782 | enum ofp_version ofp_version OVS_UNUSED, | |
3783 | struct ofpbuf *out) | |
c2d936a4 BP |
3784 | { |
3785 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
3786 | return 0; | |
3787 | } | |
8621547c | 3788 | |
c2d936a4 BP |
3789 | static void |
3790 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
3791 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3792 | { | |
3793 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
3794 | } | |
8621547c | 3795 | |
cab50449 | 3796 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3797 | parse_SET_QUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3798 | { |
efefbcae | 3799 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(pp->ofpacts)->queue_id); |
c2d936a4 | 3800 | } |
8621547c | 3801 | |
c2d936a4 | 3802 | static void |
50f96b10 | 3803 | format_SET_QUEUE(const struct ofpact_queue *a, |
efefbcae | 3804 | const struct ofpact_format_params *fp) |
c2d936a4 | 3805 | { |
efefbcae | 3806 | ds_put_format(fp->s, "%sset_queue:%s%"PRIu32, |
b1c5bf1f | 3807 | colors.param, colors.end, a->queue_id); |
c2d936a4 BP |
3808 | } |
3809 | \f | |
3810 | /* Pop queue action. */ | |
1e7db674 | 3811 | |
c2d936a4 BP |
3812 | static enum ofperr |
3813 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
3814 | { | |
3815 | ofpact_put_POP_QUEUE(out); | |
3816 | return 0; | |
3817 | } | |
f25d0cf3 | 3818 | |
c2d936a4 BP |
3819 | static void |
3820 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
3821 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3822 | { | |
3823 | put_NXAST_POP_QUEUE(out); | |
3824 | } | |
f25d0cf3 | 3825 | |
cab50449 | 3826 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 3827 | parse_POP_QUEUE(const char *arg OVS_UNUSED, |
efefbcae | 3828 | const struct ofpact_parse_params *pp) |
c2d936a4 | 3829 | { |
efefbcae | 3830 | ofpact_put_POP_QUEUE(pp->ofpacts); |
c2d936a4 BP |
3831 | return NULL; |
3832 | } | |
f25d0cf3 | 3833 | |
c2d936a4 | 3834 | static void |
50f96b10 | 3835 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 3836 | const struct ofpact_format_params *fp) |
c2d936a4 | 3837 | { |
efefbcae | 3838 | ds_put_format(fp->s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 BP |
3839 | } |
3840 | \f | |
3841 | /* Action structure for NXAST_FIN_TIMEOUT. | |
3842 | * | |
3843 | * This action changes the idle timeout or hard timeout, or both, of this | |
3844 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
3845 | * When such a packet is observed, the action reduces the rule's idle timeout | |
3846 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
3847 | * action has no effect on an existing timeout that is already shorter than the | |
3848 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
3849 | * of zero has no effect on the respective timeout. | |
3850 | * | |
3851 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
3852 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
3853 | * receipt of the FIN or RST. | |
3854 | * | |
3855 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
3856 | * take a long time to expire. | |
3857 | * | |
3858 | * This action is intended for use with an OpenFlow rule that matches only a | |
3859 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
3860 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
3861 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
3862 | * early, which is not normally desirable. | |
3863 | */ | |
3864 | struct nx_action_fin_timeout { | |
3865 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3866 | ovs_be16 len; /* 16. */ | |
3867 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3868 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
3869 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
3870 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
3871 | ovs_be16 pad; /* Must be zero. */ | |
3872 | }; | |
3873 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 3874 | |
c2d936a4 BP |
3875 | static enum ofperr |
3876 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 3877 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3878 | struct ofpbuf *out) |
3879 | { | |
3880 | struct ofpact_fin_timeout *oft; | |
8621547c | 3881 | |
c2d936a4 BP |
3882 | oft = ofpact_put_FIN_TIMEOUT(out); |
3883 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
3884 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
3885 | return 0; | |
3886 | } | |
f25d0cf3 | 3887 | |
c2d936a4 BP |
3888 | static void |
3889 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
3890 | enum ofp_version ofp_version OVS_UNUSED, | |
3891 | struct ofpbuf *out) | |
3892 | { | |
3893 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
3894 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
3895 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
3896 | } | |
f25d0cf3 | 3897 | |
cab50449 | 3898 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3899 | parse_FIN_TIMEOUT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3900 | { |
efefbcae | 3901 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(pp->ofpacts); |
c2d936a4 | 3902 | char *key, *value; |
f25d0cf3 | 3903 | |
c2d936a4 BP |
3904 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
3905 | char *error; | |
b02475c5 | 3906 | |
c2d936a4 BP |
3907 | if (!strcmp(key, "idle_timeout")) { |
3908 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
3909 | } else if (!strcmp(key, "hard_timeout")) { | |
3910 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
3911 | } else { | |
3912 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
3913 | key); | |
8621547c | 3914 | } |
8dd54666 | 3915 | |
c2d936a4 BP |
3916 | if (error) { |
3917 | return error; | |
9cae45dc | 3918 | } |
9cae45dc | 3919 | } |
c2d936a4 BP |
3920 | return NULL; |
3921 | } | |
e3b56933 | 3922 | |
c2d936a4 | 3923 | static void |
50f96b10 | 3924 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, |
efefbcae | 3925 | const struct ofpact_format_params *fp) |
c2d936a4 | 3926 | { |
efefbcae | 3927 | ds_put_format(fp->s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 3928 | if (a->fin_idle_timeout) { |
efefbcae | 3929 | ds_put_format(fp->s, "%sidle_timeout=%s%"PRIu16",", |
b1c5bf1f | 3930 | colors.param, colors.end, a->fin_idle_timeout); |
7e9f8266 | 3931 | } |
c2d936a4 | 3932 | if (a->fin_hard_timeout) { |
efefbcae | 3933 | ds_put_format(fp->s, "%shard_timeout=%s%"PRIu16",", |
b1c5bf1f | 3934 | colors.param, colors.end, a->fin_hard_timeout); |
f25d0cf3 | 3935 | } |
efefbcae BP |
3936 | ds_chomp(fp->s, ','); |
3937 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f25d0cf3 | 3938 | } |
f839892a JS |
3939 | |
3940 | /* Action structure for NXAST_ENCAP */ | |
3941 | struct nx_action_encap { | |
3942 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3943 | ovs_be16 len; /* Total size including any property TLVs. */ | |
3944 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3945 | ovs_be16 subtype; /* NXAST_ENCAP. */ | |
3946 | ovs_be16 hdr_size; /* Header size in bytes, 0 = 'not specified'.*/ | |
3947 | ovs_be32 new_pkt_type; /* Header type to add and PACKET_TYPE of result. */ | |
3948 | struct ofp_ed_prop_header props[]; /* Encap TLV properties. */ | |
3949 | }; | |
3950 | OFP_ASSERT(sizeof(struct nx_action_encap) == 16); | |
3951 | ||
3952 | static enum ofperr | |
3953 | decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae, | |
3954 | enum ofp_version ofp_version OVS_UNUSED, | |
3955 | struct ofpbuf *out) | |
3956 | { | |
3957 | struct ofpact_encap *encap; | |
3958 | const struct ofp_ed_prop_header *ofp_prop; | |
3959 | size_t props_len; | |
3960 | uint16_t n_props = 0; | |
3961 | int err; | |
3962 | ||
3963 | encap = ofpact_put_ENCAP(out); | |
3964 | encap->ofpact.raw = NXAST_RAW_ENCAP; | |
3965 | switch (ntohl(nae->new_pkt_type)) { | |
3966 | case PT_ETH: | |
1fc11c59 | 3967 | case PT_NSH: |
f839892a JS |
3968 | /* Add supported encap header types here. */ |
3969 | break; | |
3970 | default: | |
3971 | return OFPERR_NXBAC_BAD_HEADER_TYPE; | |
3972 | } | |
3973 | encap->new_pkt_type = nae->new_pkt_type; | |
3974 | encap->hdr_size = ntohs(nae->hdr_size); | |
3975 | ||
3976 | ofp_prop = nae->props; | |
3977 | props_len = ntohs(nae->len) - offsetof(struct nx_action_encap, props); | |
3978 | n_props = 0; | |
3979 | while (props_len > 0) { | |
3980 | err = decode_ed_prop(&ofp_prop, out, &props_len); | |
3981 | if (err) { | |
3982 | return err; | |
3983 | } | |
3984 | n_props++; | |
3985 | } | |
3986 | encap->n_props = n_props; | |
3987 | out->header = &encap->ofpact; | |
3988 | ofpact_finish_ENCAP(out, &encap); | |
3989 | ||
3990 | return 0; | |
3991 | } | |
3992 | ||
3993 | static void | |
3994 | encode_ENCAP(const struct ofpact_encap *encap, | |
3995 | enum ofp_version ofp_version OVS_UNUSED, | |
3996 | struct ofpbuf *out) | |
3997 | { | |
3998 | size_t start_ofs = out->size; | |
3999 | struct nx_action_encap *nae = put_NXAST_ENCAP(out); | |
4000 | int i; | |
4001 | ||
4002 | nae->new_pkt_type = encap->new_pkt_type; | |
4003 | nae->hdr_size = htons(encap->hdr_size); | |
4004 | const struct ofpact_ed_prop *prop = encap->props; | |
4005 | for (i = 0; i < encap->n_props; i++) { | |
4006 | encode_ed_prop(&prop, out); | |
4007 | } | |
4008 | pad_ofpat(out, start_ofs); | |
4009 | } | |
4010 | ||
4011 | static bool | |
4012 | parse_encap_header(const char *hdr, ovs_be32 *packet_type) | |
4013 | { | |
4014 | if (strcmp(hdr, "ethernet") == 0) { | |
4015 | *packet_type = htonl(PT_ETH); | |
1fc11c59 JS |
4016 | } else if (strcmp(hdr, "nsh") == 0) { |
4017 | *packet_type = htonl(PT_NSH); | |
f839892a JS |
4018 | } else { |
4019 | return false; | |
4020 | } | |
4021 | return true; | |
4022 | } | |
4023 | ||
4024 | static char * | |
4025 | parse_ed_props(const uint16_t prop_class, char **arg, int *n_props, struct ofpbuf *out) | |
4026 | { | |
4027 | char *key, *value, *err; | |
4028 | uint8_t prop_type; | |
4029 | ||
4030 | while (ofputil_parse_key_value(arg, &key, &value)) { | |
4031 | if (!parse_ed_prop_type(prop_class, key, &prop_type)) { | |
4032 | return xasprintf("Invalid property: %s", key); | |
4033 | } | |
4034 | if (value == NULL) { | |
4035 | return xasprintf("Missing the value for property: %s", key); | |
4036 | } | |
4037 | err = parse_ed_prop_value(prop_class, prop_type, value, out); | |
4038 | if (err != NULL) { | |
4039 | return err; | |
4040 | } | |
4041 | (*n_props)++; | |
4042 | } | |
4043 | return NULL; | |
4044 | } | |
4045 | ||
4046 | /* The string representation of the encap action is | |
4047 | * encap(header_type(prop=<value>,tlv(<class>,<type>,<value>),...)) | |
4048 | */ | |
4049 | ||
4050 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4051 | parse_ENCAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4052 | { |
4053 | struct ofpact_encap *encap; | |
4054 | char *key, *value, *str; | |
4055 | char *error = NULL; | |
4056 | uint16_t prop_class; | |
4057 | int n_props = 0; | |
4058 | ||
efefbcae | 4059 | encap = ofpact_put_ENCAP(pp->ofpacts); |
f839892a JS |
4060 | encap->hdr_size = 0; |
4061 | /* Parse encap header type. */ | |
4062 | str = arg; | |
4063 | if (!ofputil_parse_key_value(&arg, &key, &value)) { | |
4064 | return xasprintf("Missing encap hdr: %s", str); | |
4065 | } | |
4066 | if (!parse_encap_header(key, &encap->new_pkt_type)) { | |
4067 | return xasprintf("Encap hdr not supported: %s", value); | |
4068 | } | |
4069 | if (!parse_ed_prop_class(key, &prop_class)) { | |
4070 | return xasprintf("Invalid encap prop class: %s", key); | |
4071 | } | |
4072 | /* Parse encap properties. */ | |
efefbcae | 4073 | error = parse_ed_props(prop_class, &value, &n_props, pp->ofpacts); |
f839892a JS |
4074 | if (error != NULL) { |
4075 | return error; | |
4076 | } | |
efefbcae BP |
4077 | /* ofpbuf may have been re-allocated. */ |
4078 | encap = pp->ofpacts->header; | |
f839892a | 4079 | encap->n_props = n_props; |
efefbcae | 4080 | ofpact_finish_ENCAP(pp->ofpacts, &encap); |
f839892a JS |
4081 | return NULL; |
4082 | } | |
4083 | ||
4084 | static char * | |
4085 | format_encap_pkt_type(const ovs_be32 pkt_type) | |
4086 | { | |
4087 | switch (ntohl(pkt_type)) { | |
4088 | case PT_ETH: | |
4089 | return "ethernet"; | |
1fc11c59 JS |
4090 | case PT_NSH: |
4091 | return "nsh"; | |
f839892a JS |
4092 | default: |
4093 | return "UNKNOWN"; | |
4094 | } | |
4095 | } | |
4096 | ||
4097 | static void | |
4098 | format_ed_props(struct ds *s, uint16_t n_props, | |
4099 | const struct ofpact_ed_prop *prop) | |
4100 | { | |
4101 | const uint8_t *p = (uint8_t *) prop; | |
4102 | int i; | |
4103 | ||
4104 | if (n_props == 0) { | |
4105 | return; | |
4106 | } | |
4107 | for (i = 0; i < n_props; i++) { | |
4108 | format_ed_prop(s, prop); | |
4109 | ds_put_char(s, ','); | |
4110 | p += ROUND_UP(prop->len, 8); | |
4111 | prop = ALIGNED_CAST(const struct ofpact_ed_prop *, p); | |
4112 | } | |
4113 | if (n_props > 0) { | |
4114 | ds_chomp(s, ','); | |
4115 | } | |
4116 | } | |
4117 | ||
4118 | static void | |
4119 | format_ENCAP(const struct ofpact_encap *a, | |
efefbcae | 4120 | const struct ofpact_format_params *fp) |
f839892a | 4121 | { |
efefbcae BP |
4122 | ds_put_format(fp->s, "%sencap(%s", colors.paren, colors.end); |
4123 | ds_put_format(fp->s, "%s", format_encap_pkt_type(a->new_pkt_type)); | |
f839892a | 4124 | if (a->n_props > 0) { |
efefbcae BP |
4125 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
4126 | format_ed_props(fp->s, a->n_props, a->props); | |
4127 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f839892a | 4128 | } |
efefbcae | 4129 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4130 | } |
4131 | ||
4132 | /* Action structure for NXAST_DECAP */ | |
4133 | struct nx_action_decap { | |
4134 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4135 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4136 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4137 | ovs_be16 subtype; /* NXAST_DECAP. */ | |
4138 | uint8_t pad[2]; /* 2 bytes padding */ | |
4139 | ||
4140 | /* Packet type or result. | |
4141 | * | |
4142 | * The special value (0,0xFFFE) "Use next proto" | |
4143 | * is used to request OVS to automatically set the new packet type based | |
4144 | * on the decap'ed header's next protocol. | |
4145 | */ | |
4146 | ovs_be32 new_pkt_type; | |
4147 | }; | |
4148 | OFP_ASSERT(sizeof(struct nx_action_decap) == 16); | |
4149 | ||
4150 | static enum ofperr | |
4151 | decode_NXAST_RAW_DECAP(const struct nx_action_decap *nad, | |
4152 | enum ofp_version ofp_version OVS_UNUSED, | |
4153 | struct ofpbuf *ofpacts) | |
4154 | { | |
4155 | struct ofpact_decap * decap; | |
4156 | ||
4157 | if (ntohs(nad->len) > sizeof *nad) { | |
4158 | /* No properties supported yet. */ | |
4159 | return OFPERR_NXBAC_UNKNOWN_ED_PROP; | |
4160 | } | |
4161 | ||
4162 | decap = ofpact_put_DECAP(ofpacts); | |
4163 | decap->ofpact.raw = NXAST_RAW_DECAP; | |
4164 | decap->new_pkt_type = nad->new_pkt_type; | |
4165 | return 0; | |
4166 | } | |
4167 | ||
4168 | static void | |
4169 | encode_DECAP(const struct ofpact_decap *decap, | |
4170 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4171 | { | |
4172 | struct nx_action_decap *nad = put_NXAST_DECAP(out); | |
4173 | ||
4174 | nad->len = htons(sizeof(struct nx_action_decap)); | |
4175 | nad->new_pkt_type = decap->new_pkt_type; | |
4176 | } | |
4177 | ||
4178 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4179 | parse_DECAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4180 | { |
4181 | struct ofpact_decap *decap; | |
4182 | char *key, *value, *pos; | |
4183 | char *error = NULL; | |
4184 | uint16_t ns, type; | |
4185 | ||
efefbcae | 4186 | decap = ofpact_put_DECAP(pp->ofpacts); |
f839892a JS |
4187 | /* Default next packet_type is PT_USE_NEXT_PROTO. */ |
4188 | decap->new_pkt_type = htonl(PT_USE_NEXT_PROTO); | |
4189 | ||
4190 | /* Parse decap packet_type if given. */ | |
4191 | if (ofputil_parse_key_value(&arg, &key, &value)) { | |
4192 | if (strcmp(key, "packet_type") == 0) { | |
4193 | pos = value; | |
4194 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4195 | || strcmp(key, "ns") != 0) { | |
4196 | return xstrdup("Missing packet_type attribute ns"); | |
4197 | } | |
4198 | error = str_to_u16(value, "ns", &ns); | |
4199 | if (error) { | |
4200 | return error; | |
4201 | } | |
4202 | if (ns >= OFPHTN_N_TYPES) { | |
4203 | return xasprintf("Unsupported ns value: %"PRIu16, ns); | |
4204 | } | |
4205 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4206 | || strcmp(key, "type") != 0) { | |
4207 | return xstrdup("Missing packet_type attribute type"); | |
4208 | } | |
4209 | error = str_to_u16(value, "type", &type); | |
4210 | if (error) { | |
4211 | return error; | |
4212 | } | |
4213 | decap->new_pkt_type = htonl(PACKET_TYPE(ns, type)); | |
4214 | } else { | |
4215 | return xasprintf("Invalid decap argument: %s", key); | |
4216 | } | |
4217 | } | |
4218 | return NULL; | |
4219 | } | |
4220 | ||
4221 | static void | |
4222 | format_DECAP(const struct ofpact_decap *a, | |
efefbcae | 4223 | const struct ofpact_format_params *fp) |
f839892a | 4224 | { |
efefbcae | 4225 | ds_put_format(fp->s, "%sdecap(%s", colors.paren, colors.end); |
f839892a | 4226 | if (a->new_pkt_type != htonl(PT_USE_NEXT_PROTO)) { |
efefbcae | 4227 | ds_put_format(fp->s, "packet_type(ns=%"PRIu16",id=%#"PRIx16")", |
f839892a JS |
4228 | pt_ns(a->new_pkt_type), |
4229 | pt_ns_type(a->new_pkt_type)); | |
4230 | } | |
efefbcae | 4231 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4232 | } |
4233 | ||
491e05c2 YY |
4234 | /* Action dec_nsh_ttl */ |
4235 | ||
4236 | static enum ofperr | |
4237 | decode_NXAST_RAW_DEC_NSH_TTL(struct ofpbuf *out) | |
4238 | { | |
4239 | ofpact_put_DEC_NSH_TTL(out); | |
4240 | return 0; | |
4241 | } | |
4242 | ||
4243 | static void | |
4244 | encode_DEC_NSH_TTL(const struct ofpact_null *null OVS_UNUSED, | |
4245 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4246 | { | |
4247 | put_NXAST_DEC_NSH_TTL(out); | |
4248 | } | |
4249 | ||
4250 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4251 | parse_DEC_NSH_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
491e05c2 | 4252 | { |
efefbcae | 4253 | ofpact_put_DEC_NSH_TTL(pp->ofpacts); |
491e05c2 YY |
4254 | return NULL; |
4255 | } | |
4256 | ||
4257 | static void | |
4258 | format_DEC_NSH_TTL(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 4259 | const struct ofpact_format_params *fp) |
491e05c2 | 4260 | { |
efefbcae | 4261 | ds_put_format(fp->s, "%sdec_nsh_ttl%s", colors.special, colors.end); |
491e05c2 YY |
4262 | } |
4263 | ||
c2d936a4 | 4264 | \f |
2cd20955 JR |
4265 | /* Action structures for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE, and |
4266 | * NXAST_RESUBMIT_TABLE_CT. | |
eca39bce | 4267 | * |
c2d936a4 | 4268 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 4269 | * |
2cd20955 JR |
4270 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the |
4271 | * 'table' member is not 255, then it specifies the table to search. | |
ca287d20 | 4272 | * |
2cd20955 JR |
4273 | * - Otherwise (for NXAST_RESUBMIT_TABLE or NXAST_RESUBMIT_TABLE_CT with a |
4274 | * 'table' of 255, or for NXAST_RESUBMIT regardless of 'table'), it | |
4275 | * searches the current flow table, that is, the OpenFlow flow table that | |
4276 | * contains the flow from which this action was obtained. If this action | |
4277 | * did not come from a flow table (e.g. it came from an OFPT_PACKET_OUT | |
4278 | * message), then table 0 is the current table. | |
c2d936a4 BP |
4279 | * |
4280 | * The flow table lookup uses a flow that may be slightly modified from the | |
4281 | * original lookup: | |
4282 | * | |
4283 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
4284 | * is used as the flow's in_port. | |
4285 | * | |
2cd20955 JR |
4286 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the 'in_port' |
4287 | * member is not OFPP_IN_PORT, then its value is used as the flow's | |
4288 | * in_port. Otherwise, the original in_port is used. | |
4289 | * | |
4290 | * - For NXAST_RESUBMIT_TABLE_CT the Conntrack 5-tuple fields are used as | |
4291 | * the packets IP header fields during the lookup. | |
c2d936a4 BP |
4292 | * |
4293 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
4294 | * resubmit action, then the flow is updated with the new values. | |
4295 | * | |
4296 | * Following the lookup, the original in_port is restored. | |
4297 | * | |
4298 | * If the modified flow matched in the flow table, then the corresponding | |
4299 | * actions are executed. Afterward, actions following the resubmit in the | |
4300 | * original set of actions, if any, are executed; any changes made to the | |
4301 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
4302 | * actions are executed, although the original in_port is restored. | |
4303 | * | |
4304 | * Resubmit actions may be used any number of times within a set of actions. | |
4305 | * | |
790c5d26 BP |
4306 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
4307 | * use, the implementation may limit nesting depth and the total number of | |
4308 | * resubmits: | |
4309 | * | |
4310 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
4311 | * | |
4312 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
4313 | * | |
4314 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
4315 | * | |
4316 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
4317 | * | |
4318 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
4319 | * | |
4320 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
4321 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
4322 | * did not impose any total limit). | |
c2d936a4 | 4323 | * |
2cd20955 JR |
4324 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE and |
4325 | * NXAST_RESUBMIT_TABLE_CT require 'pad' to be all-bits-zero. | |
c2d936a4 BP |
4326 | * |
4327 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
2cd20955 JR |
4328 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. Open vSwitch before |
4329 | * 2.8.0 did not support NXAST_RESUBMIT_TABLE_CT. | |
c2d936a4 BP |
4330 | */ |
4331 | struct nx_action_resubmit { | |
4332 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4333 | ovs_be16 len; /* Length is 16. */ | |
4334 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4335 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
4336 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
4337 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
4338 | uint8_t pad[3]; | |
4339 | }; | |
4340 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
4341 | ||
4342 | static enum ofperr | |
f3cd3ac7 JS |
4343 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
4344 | enum ofp_version ofp_version OVS_UNUSED, | |
4345 | struct ofpbuf *out) | |
f25d0cf3 | 4346 | { |
c2d936a4 | 4347 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 4348 | |
c2d936a4 BP |
4349 | resubmit = ofpact_put_RESUBMIT(out); |
4350 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
4351 | resubmit->in_port = u16_to_ofp(port); | |
4352 | resubmit->table_id = 0xff; | |
4353 | return 0; | |
f25d0cf3 | 4354 | } |
4cceacb9 | 4355 | |
c2d936a4 BP |
4356 | static enum ofperr |
4357 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 4358 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 4359 | struct ofpbuf *out) |
ba2fe8e9 | 4360 | { |
c2d936a4 | 4361 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 4362 | |
c2d936a4 BP |
4363 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
4364 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4365 | } | |
4366 | ||
4367 | resubmit = ofpact_put_RESUBMIT(out); | |
4368 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
4369 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
4370 | resubmit->table_id = nar->table; | |
4371 | return 0; | |
ba2fe8e9 BP |
4372 | } |
4373 | ||
2cd20955 JR |
4374 | static enum ofperr |
4375 | decode_NXAST_RAW_RESUBMIT_TABLE_CT(const struct nx_action_resubmit *nar, | |
4376 | enum ofp_version ofp_version OVS_UNUSED, | |
4377 | struct ofpbuf *out) | |
4378 | { | |
4379 | enum ofperr error = decode_NXAST_RAW_RESUBMIT_TABLE(nar, ofp_version, out); | |
4380 | if (error) { | |
4381 | return error; | |
4382 | } | |
4383 | struct ofpact_resubmit *resubmit = out->header; | |
4384 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE_CT; | |
4385 | resubmit->with_ct_orig = true; | |
4386 | return 0; | |
4387 | } | |
4388 | ||
c2d936a4 BP |
4389 | static void |
4390 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
4391 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 4392 | { |
c2d936a4 | 4393 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 4394 | |
c2d936a4 | 4395 | if (resubmit->table_id == 0xff |
2cd20955 | 4396 | && resubmit->ofpact.raw == NXAST_RAW_RESUBMIT) { |
c2d936a4 BP |
4397 | put_NXAST_RESUBMIT(out, in_port); |
4398 | } else { | |
2cd20955 JR |
4399 | struct nx_action_resubmit *nar; |
4400 | nar = resubmit->with_ct_orig | |
4401 | ? put_NXAST_RESUBMIT_TABLE_CT(out) : put_NXAST_RESUBMIT_TABLE(out); | |
c2d936a4 BP |
4402 | nar->table = resubmit->table_id; |
4403 | nar->in_port = htons(in_port); | |
4404 | } | |
4405 | } | |
6813ee7c | 4406 | |
cab50449 | 4407 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4408 | parse_RESUBMIT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
4409 | { |
4410 | struct ofpact_resubmit *resubmit; | |
2cd20955 | 4411 | char *in_port_s, *table_s, *ct_s; |
6813ee7c | 4412 | |
efefbcae | 4413 | resubmit = ofpact_put_RESUBMIT(pp->ofpacts); |
8f2cded4 | 4414 | |
c2d936a4 BP |
4415 | in_port_s = strsep(&arg, ","); |
4416 | if (in_port_s && in_port_s[0]) { | |
efefbcae | 4417 | if (!ofputil_port_from_string(in_port_s, pp->port_map, |
50f96b10 | 4418 | &resubmit->in_port)) { |
c2d936a4 | 4419 | return xasprintf("%s: resubmit to unknown port", in_port_s); |
8f2cded4 | 4420 | } |
c2d936a4 BP |
4421 | } else { |
4422 | resubmit->in_port = OFPP_IN_PORT; | |
4423 | } | |
4cceacb9 | 4424 | |
c2d936a4 BP |
4425 | table_s = strsep(&arg, ","); |
4426 | if (table_s && table_s[0]) { | |
4bc938cc BP |
4427 | if (!ofputil_table_from_string(table_s, pp->table_map, |
4428 | &resubmit->table_id)) { | |
4429 | return xasprintf("%s: resubmit to unknown table", table_s); | |
c2d936a4 | 4430 | } |
c2d936a4 BP |
4431 | } else { |
4432 | resubmit->table_id = 255; | |
4cceacb9 JS |
4433 | } |
4434 | ||
2cd20955 JR |
4435 | ct_s = strsep(&arg, ","); |
4436 | if (ct_s && ct_s[0]) { | |
4437 | if (strcmp(ct_s, "ct")) { | |
4438 | return xasprintf("%s: unknown parameter", ct_s); | |
4439 | } | |
4440 | resubmit->with_ct_orig = true; | |
4441 | } else { | |
4442 | resubmit->with_ct_orig = false; | |
4443 | } | |
4444 | ||
c2d936a4 BP |
4445 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
4446 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
4447 | "specified on resubmit"); | |
4448 | } | |
4449 | return NULL; | |
4450 | } | |
4451 | ||
4452 | static void | |
50f96b10 | 4453 | format_RESUBMIT(const struct ofpact_resubmit *a, |
efefbcae | 4454 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
4455 | { |
4456 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
efefbcae BP |
4457 | ds_put_format(fp->s, "%sresubmit:%s", colors.special, colors.end); |
4458 | ofputil_format_port(a->in_port, fp->port_map, fp->s); | |
c2d936a4 | 4459 | } else { |
efefbcae | 4460 | ds_put_format(fp->s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 | 4461 | if (a->in_port != OFPP_IN_PORT) { |
efefbcae | 4462 | ofputil_format_port(a->in_port, fp->port_map, fp->s); |
c2d936a4 | 4463 | } |
efefbcae | 4464 | ds_put_char(fp->s, ','); |
c2d936a4 | 4465 | if (a->table_id != 255) { |
4bc938cc | 4466 | ofputil_format_table(a->table_id, fp->table_map, fp->s); |
c2d936a4 | 4467 | } |
2cd20955 | 4468 | if (a->with_ct_orig) { |
efefbcae | 4469 | ds_put_cstr(fp->s, ",ct"); |
2cd20955 | 4470 | } |
efefbcae | 4471 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
4472 | } |
4473 | } | |
4474 | \f | |
4c71600d | 4475 | /* Action structure for NXAST_LEARN and NXAST_LEARN2. |
c2d936a4 BP |
4476 | * |
4477 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
4478 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
4479 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
4480 | * flow's match criteria and actions are built by applying each of the series | |
4481 | * of flow_mod_spec elements included as part of the action. | |
4482 | * | |
4483 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
4484 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
4485 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
4486 | * bits from a source to a destination. In this case, the header contains | |
4487 | * multiple fields: | |
4488 | * | |
4489 | * 15 14 13 12 11 10 0 | |
4490 | * +------+---+------+---------------------------------+ | |
4491 | * | 0 |src| dst | n_bits | | |
4492 | * +------+---+------+---------------------------------+ | |
4493 | * | |
4494 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
4495 | * following table summarizes the meaning of each possible combination. | |
4496 | * Details follow the table: | |
4497 | * | |
4498 | * src dst meaning | |
4499 | * --- --- ---------------------------------------------------------- | |
4500 | * 0 0 Add match criteria based on value in a field. | |
4501 | * 1 0 Add match criteria based on an immediate value. | |
4502 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
4503 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
4504 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
4505 | * All other combinations are undefined and not allowed. | |
4506 | * | |
4507 | * The flow_mod_spec header is followed by a source specification and a | |
4508 | * destination specification. The format and meaning of the source | |
4509 | * specification depends on 'src': | |
4510 | * | |
4511 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
4512 | * which this action is attached. (This should be a wildcarded field. If | |
4513 | * its value is fully specified then the source bits being copied have | |
4514 | * constant values.) | |
4515 | * | |
4516 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
4517 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
4518 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
4519 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
4520 | * field in NXAST_REG_MOVE. | |
4521 | * | |
4522 | * - If 'src' is 1, the source bits are a constant value. The source | |
4523 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
4524 | * number in network order, the source bits are the 'n_bits' | |
4525 | * least-significant bits. The switch will report an error if other bits | |
4526 | * in the constant are nonzero. | |
4527 | * | |
4528 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
4529 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
4530 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
4531 | * meaning of the flow_mod_spec depends on 'dst': | |
4532 | * | |
4533 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
4534 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
4535 | * packet equal the source bits. 'field' may be any nxm_header with | |
4536 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
4537 | * | |
4538 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
4539 | * prerequisites for matching fields specified later, by copying constant | |
4540 | * values into prerequisite fields. | |
4541 | * | |
4542 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
4543 | * restrictions. | |
4544 | * | |
4545 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
4546 | * the new flow. The new flow copies the source bits into | |
4547 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
4548 | * flow_mod_specs. | |
4549 | * | |
4550 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
4551 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
4552 | * | |
4553 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
4554 | * empty. It has the following meaning: | |
4555 | * | |
4556 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
4557 | * The new flow outputs to the OpenFlow port specified by the source field. | |
4558 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
4559 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
4560 | * may not be used. | |
4561 | * | |
4562 | * Resource Management | |
4563 | * ------------------- | |
4564 | * | |
4565 | * A switch has a finite amount of flow table space available for learning. | |
4566 | * When this space is exhausted, no new learning table entries will be learned | |
4567 | * until some existing flow table entries expire. The controller should be | |
4568 | * prepared to handle this by flooding (which can be implemented as a | |
4569 | * low-priority flow). | |
4570 | * | |
4571 | * If a learned flow matches a single TCP stream with a relatively long | |
4572 | * timeout, one may make the best of resource constraints by setting | |
4573 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
4574 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
4575 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
4576 | * the learned flow. | |
4577 | * | |
4578 | * Examples | |
4579 | * -------- | |
4580 | * | |
4581 | * The following examples give a prose description of the flow_mod_specs along | |
4582 | * with informal notation for how those would be represented and a hex dump of | |
4583 | * the bytes that would be required. | |
4584 | * | |
4585 | * These examples could work with various nx_action_learn parameters. Typical | |
4586 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
4587 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
4588 | * | |
4589 | * 1. Learn input port based on the source MAC, with lookup into | |
4590 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
4591 | * | |
4592 | * Match on in_port=99: | |
4593 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
4594 | * ovs_be16(99), 00 63 | |
4595 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4596 | * | |
4597 | * Match Ethernet destination on Ethernet source from packet: | |
4598 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4599 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4600 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4601 | * | |
4602 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
4603 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
4604 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4605 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
4606 | * | |
4607 | * Given a packet that arrived on port A with Ethernet source address B, | |
4608 | * this would set up the flow "in_port=99, dl_dst=B, | |
4609 | * actions=load:A->NXM_NX_REG1[16..31]". | |
4610 | * | |
4611 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
4612 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4613 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
4614 | * | |
4615 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
4616 | * into NXM_NX_REG1[16:31]: | |
4617 | * | |
4618 | * Match on same VLAN ID as packet: | |
4619 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
4620 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4621 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4622 | * | |
4623 | * Match Ethernet destination on Ethernet source from packet: | |
4624 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4625 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4626 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4627 | * | |
4628 | * Output to the packet's input port: | |
4629 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
4630 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4631 | * | |
4632 | * Given a packet that arrived on port A with Ethernet source address B in | |
4633 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
4634 | * actions=output:A". | |
4635 | * | |
4636 | * In syntax accepted by ovs-ofctl, this action is: | |
4637 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4638 | * output:NXM_OF_IN_PORT[]) | |
4639 | * | |
4640 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
4641 | * 10-second MAC expiration time to make it easier to see what's going on | |
4642 | * | |
4643 | * ovs-vsctl del-controller br0 | |
4644 | * ovs-ofctl del-flows br0 | |
4645 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
4646 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
4647 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
4648 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
4649 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
4650 | * | |
4651 | * You can then dump the MAC learning table with: | |
4652 | * | |
4653 | * ovs-ofctl dump-flows br0 table=1 | |
4654 | * | |
4655 | * Usage Advice | |
4656 | * ------------ | |
4657 | * | |
4658 | * For best performance, segregate learned flows into a table that is not used | |
4659 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
4660 | * (a flow with no match criteria). If different learning actions specify | |
4661 | * different match criteria, use different tables for the learned flows. | |
4662 | * | |
4663 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
4664 | * These timeouts apply to the flow that is added, which means that a flow with | |
4665 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
4666 | * address. This is not usually the intent in MAC learning; instead, we want | |
4667 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
4668 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
4669 | * |
4670 | * | |
4671 | * Visibility of Changes | |
4672 | * --------------------- | |
4673 | * | |
4674 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
4675 | * flow translation are visible to flow table lookups made later in the flow | |
4676 | * translation. This means that, in the example above, a MAC learned by the | |
4677 | * learn action in table 0 would be found in table 1 (if the packet being | |
4678 | * processed had the same source and destination MAC address). | |
4679 | * | |
4680 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
4681 | * modify a flow) by a "learn" action are visible only for later flow | |
4682 | * translations, not for later lookups within the same flow translation. In | |
4683 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
4684 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
4685 | * after the processing of the learn action, meaning that if this MAC had not | |
4686 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
4687 | struct nx_action_learn { |
4688 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4689 | ovs_be16 len; /* At least 24. */ | |
4690 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4691 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
4692 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
4693 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
4694 | ovs_be16 priority; /* Priority level of flow entry. */ | |
4695 | ovs_be64 cookie; /* Cookie for new flow. */ | |
4696 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
4697 | uint8_t table_id; /* Table to insert flow entry. */ | |
4698 | uint8_t pad; /* Must be zero. */ | |
4699 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
4700 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
4701 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
4702 | * until the end of the action is reached. */ | |
4703 | }; | |
4704 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
4705 | ||
4c71600d DDP |
4706 | struct nx_action_learn2 { |
4707 | struct nx_action_learn up; /* The wire format includes nx_action_learn. */ | |
1746822c JS |
4708 | ovs_be32 limit; /* Maximum number of learned flows. |
4709 | * 0 indicates unlimited. */ | |
4c71600d DDP |
4710 | |
4711 | /* Where to store the result. */ | |
4712 | ovs_be16 result_dst_ofs; /* Starting bit offset in destination. */ | |
4713 | ||
4714 | ovs_be16 pad2; /* Must be zero. */ | |
4715 | /* Followed by: | |
4716 | * - OXM/NXM header for destination field (4 or 8 bytes), | |
4717 | * if NX_LEARN_F_WRITE_RESULT is set in 'flags' | |
4718 | * - a sequence of flow_mod_spec elements, as described above, | |
4719 | * until the end of the action is reached. */ | |
4720 | }; | |
4721 | OFP_ASSERT(sizeof(struct nx_action_learn2) == 40); | |
4722 | ||
c2d936a4 BP |
4723 | static ovs_be16 |
4724 | get_be16(const void **pp) | |
4725 | { | |
4726 | const ovs_be16 *p = *pp; | |
4727 | ovs_be16 value = *p; | |
4728 | *pp = p + 1; | |
4729 | return value; | |
4730 | } | |
4731 | ||
4732 | static ovs_be32 | |
4733 | get_be32(const void **pp) | |
4734 | { | |
4735 | const ovs_be32 *p = *pp; | |
4736 | ovs_be32 value = get_unaligned_be32(p); | |
4737 | *pp = p + 1; | |
4738 | return value; | |
4739 | } | |
4740 | ||
04f48a68 YHW |
4741 | static enum ofperr |
4742 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf, | |
5c7c16d8 | 4743 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
c2d936a4 | 4744 | { |
5c7c16d8 YHW |
4745 | enum ofperr error; |
4746 | ||
4747 | error = mf_vl_mff_mf_from_nxm_header(ntohl(get_be32(p)), vl_mff_map, | |
4748 | &sf->field, tlv_bitmap); | |
c2d936a4 BP |
4749 | sf->ofs = ntohs(get_be16(p)); |
4750 | sf->n_bits = n_bits; | |
5c7c16d8 | 4751 | return error; |
c2d936a4 BP |
4752 | } |
4753 | ||
4754 | static unsigned int | |
4755 | learn_min_len(uint16_t header) | |
4756 | { | |
4757 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
4758 | int src_type = header & NX_LEARN_SRC_MASK; | |
4759 | int dst_type = header & NX_LEARN_DST_MASK; | |
4760 | unsigned int min_len; | |
4761 | ||
4762 | min_len = 0; | |
4763 | if (src_type == NX_LEARN_SRC_FIELD) { | |
4764 | min_len += sizeof(ovs_be32); /* src_field */ | |
4765 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
4766 | } else { | |
bc759a2c | 4767 | min_len += 2 * DIV_ROUND_UP(n_bits, 16); |
c2d936a4 BP |
4768 | } |
4769 | if (dst_type == NX_LEARN_DST_MATCH || | |
4770 | dst_type == NX_LEARN_DST_LOAD) { | |
4771 | min_len += sizeof(ovs_be32); /* dst_field */ | |
4772 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
4773 | } | |
4774 | return min_len; | |
4775 | } | |
4776 | ||
c2d936a4 | 4777 | static enum ofperr |
2ce5f311 | 4778 | decode_LEARN_common(const struct nx_action_learn *nal, |
a9fedc78 | 4779 | enum ofp_raw_action_type raw, |
2ce5f311 | 4780 | struct ofpact_learn *learn) |
c2d936a4 | 4781 | { |
c2d936a4 BP |
4782 | if (nal->pad) { |
4783 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4784 | } | |
4785 | ||
a9fedc78 | 4786 | learn->ofpact.raw = raw; |
c2d936a4 BP |
4787 | learn->idle_timeout = ntohs(nal->idle_timeout); |
4788 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
4789 | learn->priority = ntohs(nal->priority); | |
4790 | learn->cookie = nal->cookie; | |
4791 | learn->table_id = nal->table_id; | |
4792 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
4793 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
c2d936a4 | 4794 | learn->flags = ntohs(nal->flags); |
c2d936a4 BP |
4795 | |
4796 | if (learn->table_id == 0xff) { | |
4797 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4798 | } | |
4799 | ||
2ce5f311 DDP |
4800 | return 0; |
4801 | } | |
4802 | ||
4803 | static enum ofperr | |
4804 | decode_LEARN_specs(const void *p, const void *end, | |
4805 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, | |
4806 | struct ofpbuf *ofpacts) | |
4807 | { | |
4808 | struct ofpact_learn *learn = ofpacts->header; | |
4809 | ||
4810 | while (p != end) { | |
c2d936a4 BP |
4811 | struct ofpact_learn_spec *spec; |
4812 | uint16_t header = ntohs(get_be16(&p)); | |
4813 | ||
4814 | if (!header) { | |
4815 | break; | |
4816 | } | |
4817 | ||
4818 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 4819 | learn = ofpacts->header; |
c2d936a4 BP |
4820 | |
4821 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
4822 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
4823 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
4824 | ||
4825 | /* Check for valid src and dst type combination. */ | |
4826 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4827 | spec->dst_type == NX_LEARN_DST_LOAD || | |
4828 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
4829 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
4830 | /* OK. */ | |
4831 | } else { | |
4832 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4833 | } | |
4834 | ||
4835 | /* Check that the arguments don't overrun the end of the action. */ | |
4836 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
4837 | return OFPERR_OFPBAC_BAD_LEN; | |
4838 | } | |
4839 | ||
4840 | /* Get the source. */ | |
dfe191d5 JR |
4841 | const uint8_t *imm = NULL; |
4842 | unsigned int imm_bytes = 0; | |
04f48a68 | 4843 | enum ofperr error; |
c2d936a4 | 4844 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
5c7c16d8 YHW |
4845 | error = get_subfield(spec->n_bits, &p, &spec->src, vl_mff_map, |
4846 | tlv_bitmap); | |
04f48a68 YHW |
4847 | if (error) { |
4848 | return error; | |
4849 | } | |
c2d936a4 BP |
4850 | } else { |
4851 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 4852 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
4853 | |
4854 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
4855 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
4856 | } |
4857 | ||
4858 | /* Get the destination. */ | |
4859 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4860 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
5c7c16d8 YHW |
4861 | error = get_subfield(spec->n_bits, &p, &spec->dst, vl_mff_map, |
4862 | tlv_bitmap); | |
04f48a68 YHW |
4863 | if (error) { |
4864 | return error; | |
4865 | } | |
c2d936a4 | 4866 | } |
dfe191d5 JR |
4867 | |
4868 | if (imm) { | |
4869 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
4870 | OFPACT_ALIGN(imm_bytes)); | |
4871 | memcpy(src_imm, imm, imm_bytes); | |
4872 | ||
4873 | learn = ofpacts->header; | |
4874 | } | |
c2d936a4 | 4875 | } |
ce058104 | 4876 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
4877 | |
4878 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
4879 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4880 | } | |
4881 | ||
4882 | return 0; | |
4883 | } | |
4884 | ||
2ce5f311 DDP |
4885 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
4886 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4887 | static enum ofperr | |
4888 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
4889 | enum ofp_version ofp_version OVS_UNUSED, | |
4890 | const struct vl_mff_map *vl_mff_map, | |
4891 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
4892 | { | |
4893 | struct ofpact_learn *learn; | |
4894 | enum ofperr error; | |
4895 | ||
4896 | learn = ofpact_put_LEARN(ofpacts); | |
4897 | ||
a9fedc78 | 4898 | error = decode_LEARN_common(nal, NXAST_RAW_LEARN, learn); |
2ce5f311 DDP |
4899 | if (error) { |
4900 | return error; | |
4901 | } | |
4902 | ||
4903 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4904 | NX_LEARN_F_DELETE_LEARNED)) { | |
4905 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4906 | } | |
4907 | ||
4908 | return decode_LEARN_specs(nal + 1, (char *) nal + ntohs(nal->len), | |
4909 | vl_mff_map, tlv_bitmap, ofpacts); | |
4910 | } | |
4911 | ||
4c71600d DDP |
4912 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
4913 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4914 | static enum ofperr | |
4915 | decode_NXAST_RAW_LEARN2(const struct nx_action_learn2 *nal, | |
4916 | enum ofp_version ofp_version OVS_UNUSED, | |
4917 | const struct vl_mff_map *vl_mff_map, | |
4918 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
4919 | { | |
4920 | struct ofpbuf b = ofpbuf_const_initializer(nal, ntohs(nal->up.len)); | |
4921 | struct ofpact_learn *learn; | |
4922 | enum ofperr error; | |
4923 | ||
4924 | if (nal->pad2) { | |
4925 | return OFPERR_NXBAC_MUST_BE_ZERO; | |
4926 | } | |
4927 | ||
4928 | learn = ofpact_put_LEARN(ofpacts); | |
a9fedc78 | 4929 | error = decode_LEARN_common(&nal->up, NXAST_RAW_LEARN2, learn); |
4c71600d DDP |
4930 | if (error) { |
4931 | return error; | |
4932 | } | |
4933 | ||
4934 | learn->limit = ntohl(nal->limit); | |
4935 | ||
4936 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4937 | NX_LEARN_F_DELETE_LEARNED | | |
4938 | NX_LEARN_F_WRITE_RESULT)) { | |
4939 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4940 | } | |
4941 | ||
4942 | ofpbuf_pull(&b, sizeof *nal); | |
4943 | ||
4944 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
4945 | error = nx_pull_header(&b, vl_mff_map, &learn->result_dst.field, NULL); | |
4946 | if (error) { | |
4947 | return error; | |
4948 | } | |
4949 | if (!learn->result_dst.field->writable) { | |
4950 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
4951 | } | |
4952 | learn->result_dst.ofs = ntohs(nal->result_dst_ofs); | |
4953 | learn->result_dst.n_bits = 1; | |
4954 | } else if (nal->result_dst_ofs) { | |
4955 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4956 | } | |
4957 | ||
4958 | return decode_LEARN_specs(b.data, (char *) nal + ntohs(nal->up.len), | |
4959 | vl_mff_map, tlv_bitmap, ofpacts); | |
4960 | } | |
4961 | ||
c2d936a4 BP |
4962 | static void |
4963 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
4964 | { | |
4965 | ofpbuf_put(b, &x, sizeof x); | |
4966 | } | |
4967 | ||
4968 | static void | |
4969 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
4970 | { | |
4971 | ofpbuf_put(b, &x, sizeof x); | |
4972 | } | |
4973 | ||
4974 | static void | |
4975 | put_u16(struct ofpbuf *b, uint16_t x) | |
4976 | { | |
4977 | put_be16(b, htons(x)); | |
4978 | } | |
4979 | ||
4980 | static void | |
4981 | put_u32(struct ofpbuf *b, uint32_t x) | |
4982 | { | |
4983 | put_be32(b, htonl(x)); | |
4984 | } | |
4985 | ||
4986 | static void | |
4987 | encode_LEARN(const struct ofpact_learn *learn, | |
4988 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4989 | { | |
4990 | const struct ofpact_learn_spec *spec; | |
4991 | struct nx_action_learn *nal; | |
4992 | size_t start_ofs; | |
4993 | ||
6fd6ed71 | 4994 | start_ofs = out->size; |
4c71600d DDP |
4995 | |
4996 | if (learn->ofpact.raw == NXAST_RAW_LEARN2 | |
4997 | || learn->limit != 0 | |
4998 | || learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
4999 | struct nx_action_learn2 *nal2; | |
5000 | ||
5001 | nal2 = put_NXAST_LEARN2(out); | |
5002 | nal2->limit = htonl(learn->limit); | |
5003 | nal2->result_dst_ofs = htons(learn->result_dst.ofs); | |
5004 | nal = &nal2->up; | |
5005 | } else { | |
5006 | nal = put_NXAST_LEARN(out); | |
5007 | } | |
c2d936a4 BP |
5008 | nal->idle_timeout = htons(learn->idle_timeout); |
5009 | nal->hard_timeout = htons(learn->hard_timeout); | |
5010 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
5011 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
5012 | nal->priority = htons(learn->priority); | |
5013 | nal->cookie = learn->cookie; | |
5014 | nal->flags = htons(learn->flags); | |
5015 | nal->table_id = learn->table_id; | |
5016 | ||
4c71600d DDP |
5017 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
5018 | nx_put_header(out, learn->result_dst.field->id, 0, false); | |
5019 | } | |
5020 | ||
c65a31e2 | 5021 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
5022 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
5023 | ||
5024 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
04f48a68 | 5025 | put_u32(out, nxm_header_from_mff(spec->src.field)); |
c2d936a4 BP |
5026 | put_u16(out, spec->src.ofs); |
5027 | } else { | |
5028 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
5029 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 5030 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 5031 | |
507a9a16 JR |
5032 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
5033 | n_bytes); | |
c2d936a4 BP |
5034 | } |
5035 | ||
5036 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5037 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
04f48a68 | 5038 | put_u32(out, nxm_header_from_mff(spec->dst.field)); |
c2d936a4 BP |
5039 | put_u16(out, spec->dst.ofs); |
5040 | } | |
5041 | } | |
5042 | ||
178742f9 | 5043 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5044 | } |
5045 | ||
cab50449 | 5046 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5047 | parse_LEARN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5048 | { |
4bc938cc | 5049 | return learn_parse(arg, pp->port_map, pp->table_map, pp->ofpacts); |
c2d936a4 BP |
5050 | } |
5051 | ||
5052 | static void | |
50f96b10 | 5053 | format_LEARN(const struct ofpact_learn *a, |
efefbcae | 5054 | const struct ofpact_format_params *fp) |
c2d936a4 | 5055 | { |
4bc938cc | 5056 | learn_format(a, fp->port_map, fp->table_map, fp->s); |
c2d936a4 BP |
5057 | } |
5058 | \f | |
18080541 BP |
5059 | /* Action structure for NXAST_CONJUNCTION. */ |
5060 | struct nx_action_conjunction { | |
5061 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5062 | ovs_be16 len; /* At least 16. */ | |
5063 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5064 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
5065 | uint8_t clause; | |
5066 | uint8_t n_clauses; | |
5067 | ovs_be32 id; | |
5068 | }; | |
5069 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
5070 | ||
5071 | static void | |
5072 | add_conjunction(struct ofpbuf *out, | |
5073 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
5074 | { | |
5075 | struct ofpact_conjunction *oc; | |
5076 | ||
5077 | oc = ofpact_put_CONJUNCTION(out); | |
5078 | oc->id = id; | |
5079 | oc->clause = clause; | |
5080 | oc->n_clauses = n_clauses; | |
5081 | } | |
5082 | ||
5083 | static enum ofperr | |
5084 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 5085 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
5086 | struct ofpbuf *out) |
5087 | { | |
5088 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
5089 | || nac->clause >= nac->n_clauses) { | |
5090 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
5091 | } else { | |
5092 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
5093 | return 0; | |
5094 | } | |
5095 | } | |
5096 | ||
5097 | static void | |
5098 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
5099 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5100 | { | |
5101 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
5102 | nac->clause = oc->clause; | |
5103 | nac->n_clauses = oc->n_clauses; | |
5104 | nac->id = htonl(oc->id); | |
5105 | } | |
5106 | ||
5107 | static void | |
50f96b10 | 5108 | format_CONJUNCTION(const struct ofpact_conjunction *oc, |
efefbcae | 5109 | const struct ofpact_format_params *fp) |
18080541 | 5110 | { |
efefbcae | 5111 | ds_put_format(fp->s, "%sconjunction(%s%"PRIu32",%d/%"PRIu8"%s)%s", |
b1c5bf1f QM |
5112 | colors.paren, colors.end, |
5113 | oc->id, oc->clause + 1, oc->n_clauses, | |
5114 | colors.paren, colors.end); | |
18080541 BP |
5115 | } |
5116 | ||
5117 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5118 | parse_CONJUNCTION(const char *arg, const struct ofpact_parse_params *pp) |
18080541 BP |
5119 | { |
5120 | uint8_t n_clauses; | |
5121 | uint8_t clause; | |
5122 | uint32_t id; | |
5123 | int n; | |
5124 | ||
5125 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
5126 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
5127 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
5128 | } | |
5129 | ||
5130 | if (n_clauses < 2) { | |
5131 | return xstrdup("conjunction must have at least 2 clauses"); | |
5132 | } else if (n_clauses > 64) { | |
5133 | return xstrdup("conjunction must have at most 64 clauses"); | |
5134 | } else if (clause < 1) { | |
5135 | return xstrdup("clause index must be positive"); | |
5136 | } else if (clause > n_clauses) { | |
5137 | return xstrdup("clause index must be less than or equal to " | |
5138 | "number of clauses"); | |
5139 | } | |
5140 | ||
efefbcae | 5141 | add_conjunction(pp->ofpacts, id, clause - 1, n_clauses); |
18080541 BP |
5142 | return NULL; |
5143 | } | |
5144 | \f | |
c2d936a4 BP |
5145 | /* Action structure for NXAST_MULTIPATH. |
5146 | * | |
5147 | * This action performs the following steps in sequence: | |
5148 | * | |
5149 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
5150 | * Refer to the definition of "enum nx_mp_fields" for details. | |
5151 | * | |
5152 | * The 'basis' value is used as a universal hash parameter, that is, | |
5153 | * different values of 'basis' yield different hash functions. The | |
5154 | * particular universal hash function used is implementation-defined. | |
5155 | * | |
5156 | * The hashed fields' values are drawn from the current state of the | |
5157 | * flow, including all modifications that have been made by actions up to | |
5158 | * this point. | |
5159 | * | |
5160 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
5161 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
5162 | * for details. | |
5163 | * | |
5164 | * The output of the algorithm is 'link', an unsigned integer less than | |
5165 | * or equal to 'max_link'. | |
5166 | * | |
5167 | * Some algorithms use 'arg' as an additional argument. | |
5168 | * | |
5169 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
5170 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
5171 | * action. | |
5172 | * | |
5173 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
5174 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
5175 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
5176 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
5177 | */ | |
5178 | struct nx_action_multipath { | |
5179 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5180 | ovs_be16 len; /* Length is 32. */ | |
5181 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5182 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
5183 | ||
5184 | /* What fields to hash and how. */ | |
5185 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
5186 | ovs_be16 basis; /* Universal hash parameter. */ | |
5187 | ovs_be16 pad0; | |
5188 | ||
5189 | /* Multipath link choice algorithm to apply to hash value. */ | |
5190 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
5191 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
5192 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
5193 | ovs_be16 pad1; | |
5194 | ||
5195 | /* Where to store the result. */ | |
5196 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
5197 | ovs_be32 dst; /* Destination. */ | |
5198 | }; | |
5199 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
5200 | ||
5201 | static enum ofperr | |
5202 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 5203 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 5204 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 5205 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 BP |
5206 | { |
5207 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
5208 | size_t min_n_bits = log_2_ceil(n_links); | |
5209 | struct ofpact_multipath *mp; | |
5c7c16d8 | 5210 | enum ofperr error; |
c2d936a4 BP |
5211 | |
5212 | mp = ofpact_put_MULTIPATH(out); | |
5213 | mp->fields = ntohs(nam->fields); | |
5214 | mp->basis = ntohs(nam->basis); | |
5215 | mp->algorithm = ntohs(nam->algorithm); | |
5216 | mp->max_link = ntohs(nam->max_link); | |
5217 | mp->arg = ntohl(nam->arg); | |
c2d936a4 BP |
5218 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); |
5219 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
5c7c16d8 YHW |
5220 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nam->dst), vl_mff_map, |
5221 | &mp->dst.field, tlv_bitmap); | |
5222 | if (error) { | |
5223 | return error; | |
04f48a68 YHW |
5224 | } |
5225 | ||
c2d936a4 BP |
5226 | if (!flow_hash_fields_valid(mp->fields)) { |
5227 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
5228 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5229 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
5230 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
5231 | && mp->algorithm != NX_MP_ALG_HRW | |
5232 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
5233 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
5234 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5235 | } else if (mp->dst.n_bits < min_n_bits) { | |
5236 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
5237 | "%"PRIu32" links", min_n_bits, n_links); | |
5238 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5239 | } | |
5240 | ||
5241 | return multipath_check(mp, NULL); | |
5242 | } | |
5243 | ||
5244 | static void | |
5245 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
5246 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5247 | { | |
5248 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
5249 | ||
5250 | nam->fields = htons(mp->fields); | |
5251 | nam->basis = htons(mp->basis); | |
5252 | nam->algorithm = htons(mp->algorithm); | |
5253 | nam->max_link = htons(mp->max_link); | |
5254 | nam->arg = htonl(mp->arg); | |
5255 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
04f48a68 | 5256 | nam->dst = htonl(nxm_header_from_mff(mp->dst.field)); |
c2d936a4 BP |
5257 | } |
5258 | ||
cab50449 | 5259 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5260 | parse_MULTIPATH(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5261 | { |
efefbcae | 5262 | return multipath_parse(ofpact_put_MULTIPATH(pp->ofpacts), arg); |
c2d936a4 BP |
5263 | } |
5264 | ||
5265 | static void | |
50f96b10 | 5266 | format_MULTIPATH(const struct ofpact_multipath *a, |
efefbcae | 5267 | const struct ofpact_format_params *fp) |
c2d936a4 | 5268 | { |
efefbcae | 5269 | multipath_format(a, fp->s); |
c2d936a4 BP |
5270 | } |
5271 | \f | |
5272 | /* Action structure for NXAST_NOTE. | |
5273 | * | |
5274 | * This action has no effect. It is variable length. The switch does not | |
5275 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
5276 | * can use this action to attach arbitrary metadata to a flow. | |
5277 | * | |
5278 | * This action might go away in the future. | |
5279 | */ | |
5280 | struct nx_action_note { | |
5281 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5282 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
5283 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5284 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
5285 | uint8_t note[6]; /* Start of user-defined data. */ | |
5286 | /* Possibly followed by additional user-defined data. */ | |
5287 | }; | |
5288 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
5289 | ||
5290 | static enum ofperr | |
f3cd3ac7 JS |
5291 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
5292 | enum ofp_version ofp_version OVS_UNUSED, | |
5293 | struct ofpbuf *out) | |
c2d936a4 BP |
5294 | { |
5295 | struct ofpact_note *note; | |
5296 | unsigned int length; | |
5297 | ||
5298 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 5299 | note = ofpact_put_NOTE(out); |
c2d936a4 | 5300 | note->length = length; |
2bd318de | 5301 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 5302 | note = out->header; |
ce058104 | 5303 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
5304 | |
5305 | return 0; | |
5306 | } | |
5307 | ||
5308 | static void | |
5309 | encode_NOTE(const struct ofpact_note *note, | |
5310 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5311 | { | |
6fd6ed71 | 5312 | size_t start_ofs = out->size; |
c2d936a4 | 5313 | struct nx_action_note *nan; |
c2d936a4 BP |
5314 | |
5315 | put_NXAST_NOTE(out); | |
6fd6ed71 | 5316 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
5317 | |
5318 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 5319 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5320 | } |
5321 | ||
cab50449 | 5322 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
5323 | parse_NOTE(const char *arg, const struct ofpact_parse_params *pp) |
5324 | { | |
5325 | size_t start_ofs = pp->ofpacts->size; | |
5326 | ofpact_put_NOTE(pp->ofpacts); | |
5327 | arg = ofpbuf_put_hex(pp->ofpacts, arg, NULL); | |
27aa8793 BP |
5328 | if (arg[0]) { |
5329 | return xstrdup("bad hex digit in `note' argument"); | |
5330 | } | |
efefbcae | 5331 | struct ofpact_note *note = ofpbuf_at_assert(pp->ofpacts, start_ofs, |
27aa8793 | 5332 | sizeof *note); |
efefbcae BP |
5333 | note->length = pp->ofpacts->size - (start_ofs + sizeof *note); |
5334 | ofpact_finish_NOTE(pp->ofpacts, ¬e); | |
c2d936a4 BP |
5335 | return NULL; |
5336 | } | |
5337 | ||
5338 | static void | |
50f96b10 | 5339 | format_NOTE(const struct ofpact_note *a, |
efefbcae | 5340 | const struct ofpact_format_params *fp) |
c2d936a4 | 5341 | { |
efefbcae BP |
5342 | ds_put_format(fp->s, "%snote:%s", colors.param, colors.end); |
5343 | format_hex_arg(fp->s, a->data, a->length); | |
c2d936a4 BP |
5344 | } |
5345 | \f | |
5346 | /* Exit action. */ | |
5347 | ||
5348 | static enum ofperr | |
5349 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
5350 | { | |
5351 | ofpact_put_EXIT(out); | |
5352 | return 0; | |
5353 | } | |
5354 | ||
5355 | static void | |
5356 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
5357 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5358 | { | |
5359 | put_NXAST_EXIT(out); | |
5360 | } | |
5361 | ||
cab50449 | 5362 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5363 | parse_EXIT(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 5364 | { |
efefbcae | 5365 | ofpact_put_EXIT(pp->ofpacts); |
c2d936a4 BP |
5366 | return NULL; |
5367 | } | |
5368 | ||
5369 | static void | |
50f96b10 | 5370 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 5371 | const struct ofpact_format_params *fp) |
c2d936a4 | 5372 | { |
efefbcae | 5373 | ds_put_format(fp->s, "%sexit%s", colors.special, colors.end); |
c2d936a4 BP |
5374 | } |
5375 | \f | |
e672ff9b JR |
5376 | /* Unroll xlate action. */ |
5377 | ||
5378 | static void | |
5379 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
5380 | enum ofp_version ofp_version OVS_UNUSED, | |
5381 | struct ofpbuf *out OVS_UNUSED) | |
5382 | { | |
5383 | OVS_NOT_REACHED(); | |
5384 | } | |
5385 | ||
5386 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 5387 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, |
efefbcae | 5388 | const struct ofpact_parse_params *pp OVS_UNUSED) |
e672ff9b JR |
5389 | { |
5390 | OVS_NOT_REACHED(); | |
e672ff9b JR |
5391 | } |
5392 | ||
5393 | static void | |
50f96b10 | 5394 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, |
efefbcae | 5395 | const struct ofpact_format_params *fp) |
e672ff9b | 5396 | { |
4bc938cc | 5397 | ds_put_format(fp->s, "%sunroll_xlate(%s%stable=%s", |
b1c5bf1f | 5398 | colors.paren, colors.end, |
4bc938cc BP |
5399 | colors.special, colors.end); |
5400 | ofputil_format_table(a->rule_table_id, fp->table_map, fp->s); | |
5401 | ds_put_format(fp->s, ", %scookie=%s%"PRIu64"%s)%s", | |
b1c5bf1f QM |
5402 | colors.param, colors.end, ntohll(a->rule_cookie), |
5403 | colors.paren, colors.end); | |
e672ff9b JR |
5404 | } |
5405 | \f | |
7ae62a67 WT |
5406 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
5407 | * more embedded OpenFlow actions. */ | |
5408 | ||
5409 | static enum ofperr | |
5410 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
04f48a68 YHW |
5411 | enum ofp_version ofp_version, |
5412 | const struct vl_mff_map *vl_mff_map, | |
5c7c16d8 | 5413 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7ae62a67 WT |
5414 | { |
5415 | int error; | |
5416 | struct ofpbuf openflow; | |
5417 | const size_t clone_offset = ofpacts_pull(out); | |
5418 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
5419 | ||
5420 | /* decode action list */ | |
5421 | ofpbuf_pull(out, sizeof(*clone)); | |
5422 | openflow = ofpbuf_const_initializer( | |
5423 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
5424 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
5425 | ofp_version, | |
5426 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 | 5427 | out, 0, vl_mff_map, tlv_bitmap); |
7ae62a67 WT |
5428 | clone = ofpbuf_push_uninit(out, sizeof *clone); |
5429 | out->header = &clone->ofpact; | |
5430 | ofpact_finish_CLONE(out, &clone); | |
5431 | ofpbuf_push_uninit(out, clone_offset); | |
5432 | return error; | |
5433 | } | |
5434 | ||
5435 | static void | |
5436 | encode_CLONE(const struct ofpact_nest *clone, | |
5437 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5438 | { | |
5439 | size_t len; | |
5440 | const size_t ofs = out->size; | |
5441 | struct ext_action_header *eah; | |
5442 | ||
6f9648e4 | 5443 | put_NXAST_CLONE(out); |
7ae62a67 WT |
5444 | len = ofpacts_put_openflow_actions(clone->actions, |
5445 | ofpact_nest_get_action_len(clone), | |
5446 | out, ofp_version); | |
5447 | len += sizeof *eah; | |
5448 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
5449 | eah->len = htons(len); | |
5450 | } | |
5451 | ||
5452 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5453 | parse_CLONE(char *arg, const struct ofpact_parse_params *pp) |
7ae62a67 | 5454 | { |
efefbcae BP |
5455 | const size_t clone_offset = ofpacts_pull(pp->ofpacts); |
5456 | struct ofpact_nest *clone = ofpact_put_CLONE(pp->ofpacts); | |
7ae62a67 WT |
5457 | char *error; |
5458 | ||
efefbcae BP |
5459 | ofpbuf_pull(pp->ofpacts, sizeof *clone); |
5460 | error = ofpacts_parse_copy(arg, pp, false, 0); | |
7ae62a67 | 5461 | /* header points to the action list */ |
efefbcae BP |
5462 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, sizeof *clone); |
5463 | clone = pp->ofpacts->header; | |
7ae62a67 | 5464 | |
efefbcae BP |
5465 | ofpact_finish_CLONE(pp->ofpacts, &clone); |
5466 | ofpbuf_push_uninit(pp->ofpacts, clone_offset); | |
7ae62a67 WT |
5467 | return error; |
5468 | } | |
5469 | ||
5470 | static void | |
50f96b10 | 5471 | format_CLONE(const struct ofpact_nest *a, |
efefbcae | 5472 | const struct ofpact_format_params *fp) |
7ae62a67 | 5473 | { |
efefbcae BP |
5474 | ds_put_format(fp->s, "%sclone(%s", colors.paren, colors.end); |
5475 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
5476 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
7ae62a67 WT |
5477 | } |
5478 | \f | |
c2d936a4 BP |
5479 | /* Action structure for NXAST_SAMPLE. |
5480 | * | |
5481 | * Samples matching packets with the given probability and sends them | |
5482 | * each to the set of collectors identified with the given ID. The | |
5483 | * probability is expressed as a number of packets to be sampled out | |
5484 | * of USHRT_MAX packets, and must be >0. | |
5485 | * | |
5486 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
5487 | * record sent for each sampled packet is associated with the given | |
5488 | * observation domain ID and observation point ID. Each IPFIX flow | |
5489 | * record contain the sampled packet's headers when executing this | |
5490 | * rule. If a sampled packet's headers are modified by previous | |
5491 | * actions in the flow, those modified headers are sent. */ | |
5492 | struct nx_action_sample { | |
5493 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5494 | ovs_be16 len; /* Length is 24. */ | |
5495 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5496 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5497 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5498 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5499 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5500 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5501 | }; | |
5502 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
5503 | ||
4930ea56 | 5504 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 5505 | * |
4930ea56 BP |
5506 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
5507 | * it adds support for exporting egress tunnel information. | |
5508 | * | |
5509 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
5510 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
5511 | struct nx_action_sample2 { |
5512 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5513 | ovs_be16 len; /* Length is 32. */ | |
5514 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5515 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5516 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5517 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5518 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5519 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5520 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
5521 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
5522 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
5523 | }; |
5524 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
5525 | ||
c2d936a4 | 5526 | static enum ofperr |
f3cd3ac7 JS |
5527 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
5528 | enum ofp_version ofp_version OVS_UNUSED, | |
5529 | struct ofpbuf *out) | |
c2d936a4 BP |
5530 | { |
5531 | struct ofpact_sample *sample; | |
5532 | ||
5533 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
5534 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
5535 | sample->probability = ntohs(nas->probability); | |
5536 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
5537 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
5538 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 5539 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 5540 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
5541 | |
5542 | if (sample->probability == 0) { | |
5543 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5544 | } | |
5545 | ||
5546 | return 0; | |
5547 | } | |
5548 | ||
5549 | static enum ofperr | |
4930ea56 BP |
5550 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
5551 | enum ofp_raw_action_type raw, | |
5552 | enum nx_action_sample_direction direction, | |
5553 | struct ofpact_sample *sample) | |
f69f713b | 5554 | { |
4930ea56 | 5555 | sample->ofpact.raw = raw; |
c2d936a4 BP |
5556 | sample->probability = ntohs(nas->probability); |
5557 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
5558 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
5559 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 5560 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 5561 | sample->direction = direction; |
c2d936a4 BP |
5562 | |
5563 | if (sample->probability == 0) { | |
5564 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5565 | } | |
5566 | ||
5567 | return 0; | |
5568 | } | |
5569 | ||
4930ea56 BP |
5570 | static enum ofperr |
5571 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
5572 | enum ofp_version ofp_version OVS_UNUSED, | |
5573 | struct ofpbuf *out) | |
5574 | { | |
5575 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
5576 | ofpact_put_SAMPLE(out)); | |
5577 | } | |
5578 | ||
5579 | static enum ofperr | |
5580 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
5581 | enum ofp_version ofp_version OVS_UNUSED, | |
5582 | struct ofpbuf *out) | |
5583 | { | |
5584 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
5585 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
5586 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5587 | } | |
5588 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
5589 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
5590 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
5591 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
5592 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5593 | } | |
5594 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
5595 | } | |
5596 | ||
5597 | static void | |
5598 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
5599 | struct nx_action_sample2 *nas) | |
5600 | { | |
5601 | nas->probability = htons(sample->probability); | |
5602 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5603 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5604 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5605 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
5606 | nas->direction = sample->direction; | |
5607 | } | |
5608 | ||
c2d936a4 BP |
5609 | static void |
5610 | encode_SAMPLE(const struct ofpact_sample *sample, | |
5611 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5612 | { | |
4930ea56 BP |
5613 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
5614 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
5615 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
5616 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
5617 | || sample->sampling_port != OFPP_NONE) { | |
5618 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
5619 | } else { |
5620 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
5621 | nas->probability = htons(sample->probability); | |
5622 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5623 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5624 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5625 | } | |
c2d936a4 BP |
5626 | } |
5627 | ||
5628 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
efefbcae | 5629 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
5630 | * |
5631 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5632 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 5633 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5634 | parse_SAMPLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5635 | { |
efefbcae | 5636 | struct ofpact_sample *os = ofpact_put_SAMPLE(pp->ofpacts); |
f69f713b | 5637 | os->sampling_port = OFPP_NONE; |
4930ea56 | 5638 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 5639 | |
f69f713b | 5640 | char *key, *value; |
c2d936a4 BP |
5641 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
5642 | char *error = NULL; | |
5643 | ||
5644 | if (!strcmp(key, "probability")) { | |
5645 | error = str_to_u16(value, "probability", &os->probability); | |
5646 | if (!error && os->probability == 0) { | |
5647 | error = xasprintf("invalid probability value \"%s\"", value); | |
5648 | } | |
5649 | } else if (!strcmp(key, "collector_set_id")) { | |
5650 | error = str_to_u32(value, &os->collector_set_id); | |
5651 | } else if (!strcmp(key, "obs_domain_id")) { | |
5652 | error = str_to_u32(value, &os->obs_domain_id); | |
5653 | } else if (!strcmp(key, "obs_point_id")) { | |
5654 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b | 5655 | } else if (!strcmp(key, "sampling_port")) { |
efefbcae | 5656 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 5657 | &os->sampling_port)) { |
f69f713b BY |
5658 | error = xasprintf("%s: unknown port", value); |
5659 | } | |
4930ea56 BP |
5660 | } else if (!strcmp(key, "ingress")) { |
5661 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
5662 | } else if (!strcmp(key, "egress")) { | |
5663 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
5664 | } else { |
5665 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
5666 | key); | |
5667 | } | |
5668 | if (error) { | |
5669 | return error; | |
5670 | } | |
5671 | } | |
5672 | if (os->probability == 0) { | |
5673 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
5674 | } | |
f69f713b | 5675 | |
c2d936a4 BP |
5676 | return NULL; |
5677 | } | |
5678 | ||
5679 | static void | |
50f96b10 | 5680 | format_SAMPLE(const struct ofpact_sample *a, |
efefbcae | 5681 | const struct ofpact_format_params *fp) |
c2d936a4 | 5682 | { |
efefbcae | 5683 | ds_put_format(fp->s, "%ssample(%s%sprobability=%s%"PRIu16 |
b1c5bf1f QM |
5684 | ",%scollector_set_id=%s%"PRIu32 |
5685 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 5686 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
5687 | colors.paren, colors.end, |
5688 | colors.param, colors.end, a->probability, | |
5689 | colors.param, colors.end, a->collector_set_id, | |
5690 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
5691 | colors.param, colors.end, a->obs_point_id); |
5692 | if (a->sampling_port != OFPP_NONE) { | |
efefbcae BP |
5693 | ds_put_format(fp->s, ",%ssampling_port=%s", colors.param, colors.end); |
5694 | ofputil_format_port(a->sampling_port, fp->port_map, fp->s); | |
f69f713b | 5695 | } |
4930ea56 | 5696 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
efefbcae | 5697 | ds_put_format(fp->s, ",%singress%s", colors.param, colors.end); |
4930ea56 | 5698 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { |
efefbcae | 5699 | ds_put_format(fp->s, ",%segress%s", colors.param, colors.end); |
4930ea56 | 5700 | } |
efefbcae | 5701 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
5702 | } |
5703 | \f | |
a934a3dd | 5704 | /* debug instructions. */ |
d4abaff5 BP |
5705 | |
5706 | static bool enable_debug; | |
5707 | ||
5708 | void | |
5709 | ofpact_dummy_enable(void) | |
5710 | { | |
5711 | enable_debug = true; | |
5712 | } | |
5713 | ||
5714 | static enum ofperr | |
5715 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
5716 | { | |
5717 | if (!enable_debug) { | |
5718 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5719 | } | |
5720 | ||
5721 | ofpact_put_DEBUG_RECIRC(out); | |
5722 | return 0; | |
5723 | } | |
5724 | ||
5725 | static void | |
5726 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
5727 | enum ofp_version ofp_version OVS_UNUSED, | |
5728 | struct ofpbuf *out) | |
5729 | { | |
5730 | put_NXAST_DEBUG_RECIRC(out); | |
5731 | } | |
5732 | ||
5733 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5734 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
d4abaff5 | 5735 | { |
efefbcae | 5736 | ofpact_put_DEBUG_RECIRC(pp->ofpacts); |
d4abaff5 BP |
5737 | return NULL; |
5738 | } | |
5739 | ||
5740 | static void | |
50f96b10 | 5741 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 5742 | const struct ofpact_format_params *fp) |
d4abaff5 | 5743 | { |
efefbcae | 5744 | ds_put_format(fp->s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 5745 | } |
07659514 | 5746 | |
a934a3dd JP |
5747 | static enum ofperr |
5748 | decode_NXAST_RAW_DEBUG_SLOW(struct ofpbuf *out) | |
5749 | { | |
5750 | if (!enable_debug) { | |
5751 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5752 | } | |
5753 | ||
5754 | ofpact_put_DEBUG_SLOW(out); | |
5755 | return 0; | |
5756 | } | |
5757 | ||
5758 | static void | |
5759 | encode_DEBUG_SLOW(const struct ofpact_null *n OVS_UNUSED, | |
5760 | enum ofp_version ofp_version OVS_UNUSED, | |
5761 | struct ofpbuf *out) | |
5762 | { | |
5763 | put_NXAST_DEBUG_SLOW(out); | |
5764 | } | |
5765 | ||
5766 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5767 | parse_DEBUG_SLOW(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
a934a3dd | 5768 | { |
efefbcae | 5769 | ofpact_put_DEBUG_SLOW(pp->ofpacts); |
a934a3dd JP |
5770 | return NULL; |
5771 | } | |
5772 | ||
5773 | static void | |
5774 | format_DEBUG_SLOW(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 5775 | const struct ofpact_format_params *fp) |
a934a3dd | 5776 | { |
efefbcae | 5777 | ds_put_format(fp->s, "%sdebug_slow%s", colors.value, colors.end); |
a934a3dd JP |
5778 | } |
5779 | ||
07659514 JS |
5780 | /* Action structure for NXAST_CT. |
5781 | * | |
5782 | * Pass traffic to the connection tracker. | |
5783 | * | |
5784 | * There are two important concepts to understanding the connection tracking | |
5785 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
5786 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
5787 | * | |
5788 | * - Packet State: | |
5789 | * | |
f6fabcc6 JP |
5790 | * Untracked packets have an unknown connection state. In most |
5791 | * cases, packets entering the OpenFlow pipeline will initially be | |
5792 | * in the untracked state. Untracked packets may become tracked by | |
5793 | * executing NXAST_CT with a "recirc_table" specified. This makes | |
5794 | * various aspects about the connection available, in particular | |
5795 | * the connection state. | |
5796 | * | |
5797 | * An NXAST_CT action always puts the packet into an untracked | |
5798 | * state for the current processing path. If "recirc_table" is | |
5799 | * set, execution is forked and the packet passes through the | |
5800 | * connection tracker. The specified table's processing path is | |
5801 | * able to match on Connection state until the end of the OpenFlow | |
5802 | * pipeline or NXAST_CT is called again. | |
07659514 JS |
5803 | * |
5804 | * - Connection State: | |
5805 | * | |
5806 | * Multiple packets may be associated with a single connection. Initially, | |
5807 | * all connections are uncommitted. The connection state corresponding to | |
5808 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
5809 | * | |
5810 | * Uncommitted connections have no state stored about them. Uncommitted | |
5811 | * connections may transition into the committed state by executing | |
5812 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
5813 | * | |
5814 | * Once a connection becomes committed, information may be gathered about | |
5815 | * the connection by passing subsequent packets through the connection | |
5816 | * tracker, and the state of the connection will be stored beyond the | |
5817 | * lifetime of packet processing. | |
5818 | * | |
a76a37ef JR |
5819 | * A committed connection always has the directionality of the packet that |
5820 | * caused the connection to be committed in the first place. This is the | |
5821 | * "original direction" of the connection, and the opposite direction is | |
5822 | * the "reply direction". If a connection is already committed, but it is | |
5823 | * then decided that the original direction should be the opposite of the | |
5824 | * existing connection, NX_CT_F_FORCE flag may be used in addition to | |
5825 | * NX_CT_F_COMMIT flag to in effect terminate the existing connection and | |
5826 | * start a new one in the current direction. | |
5827 | * | |
07659514 JS |
5828 | * Connections may transition back into the uncommitted state due to |
5829 | * external timers, or due to the contents of packets that are sent to the | |
5830 | * connection tracker. This behaviour is outside of the scope of the | |
5831 | * OpenFlow interface. | |
5832 | * | |
5833 | * The "zone" specifies a context within which the tracking is done: | |
5834 | * | |
5835 | * The connection tracking zone is a 16-bit number. Each zone is an | |
5836 | * independent connection tracking context. The connection state for each | |
5837 | * connection is completely separate for each zone, so if a connection | |
5838 | * is committed to zone A, then it will remain uncommitted in zone B. | |
5839 | * If NXAST_CT is executed with the same zone multiple times, later | |
5840 | * executions have no effect. | |
5841 | * | |
5842 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
5843 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
5844 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
5845 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
5846 | * are the same as the acceptable nxm_header values for the 'src' field of | |
5847 | * NXAST_REG_MOVE. | |
5848 | * | |
5849 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
5850 | * connection tracking zone. | |
5851 | * | |
5852 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
5853 | * | |
5854 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
5855 | * packet will be logically cloned prior to executing this action. One | |
5856 | * copy will be sent to the connection tracker, then will be re-injected | |
5857 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
5858 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
5859 | * fields will be populated. The original instance of the packet will | |
5860 | * continue the current actions list. This can be thought of as similar to | |
5861 | * the effect of the "output" action: One copy is sent out (in this case, | |
5862 | * to the connection tracker), but the current copy continues processing. | |
5863 | * | |
5864 | * It is strongly recommended that this table is later than the current | |
5865 | * table, to prevent loops. | |
8e53fe8c | 5866 | * |
d787ad39 JS |
5867 | * The "alg" attaches protocol-specific behaviour to this action: |
5868 | * | |
5869 | * The ALG is a 16-bit number which specifies that additional | |
5870 | * processing should be applied to this traffic. | |
5871 | * | |
5872 | * Protocol | Value | Meaning | |
5873 | * -------------------------------------------------------------------- | |
5874 | * None | 0 | No protocol-specific behaviour. | |
5875 | * FTP | 21 | Parse FTP control connections and observe the | |
5876 | * | | negotiation of related data connections. | |
5877 | * Other | Other | Unsupported protocols. | |
5878 | * | |
5879 | * By way of example, if FTP control connections have this action applied | |
5880 | * with the ALG set to FTP (21), then the connection tracker will observe | |
5881 | * the negotiation of data connections. This allows the connection | |
5882 | * tracker to identify subsequent data connections as "related" to this | |
5883 | * existing connection. The "related" flag will be populated in the | |
5884 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
5885 | * specified. | |
5886 | * | |
8e53fe8c JS |
5887 | * Zero or more actions may immediately follow this action. These actions will |
5888 | * be executed within the context of the connection tracker, and they require | |
a76a37ef | 5889 | * NX_CT_F_COMMIT flag be set. |
07659514 JS |
5890 | */ |
5891 | struct nx_action_conntrack { | |
5892 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5893 | ovs_be16 len; /* At least 24. */ | |
5894 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5895 | ovs_be16 subtype; /* NXAST_CT. */ | |
5896 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
5897 | * Unspecified flag bits must be zero. */ | |
5898 | ovs_be32 zone_src; /* Connection tracking context. */ | |
5899 | union { | |
5900 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
5901 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
5902 | }; | |
5903 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
5904 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
5905 | uint8_t pad[3]; /* Zeroes */ |
5906 | ovs_be16 alg; /* Well-known port number for the protocol. | |
5907 | * 0 indicates no ALG is required. */ | |
07659514 JS |
5908 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
5909 | * these is included in 'len'. */ | |
5910 | }; | |
5911 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
5912 | ||
5913 | static enum ofperr | |
5914 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
04f48a68 | 5915 | struct ofpact_conntrack *out, |
5c7c16d8 | 5916 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
07659514 JS |
5917 | { |
5918 | if (nac->zone_src) { | |
5919 | enum ofperr error; | |
5920 | ||
07659514 JS |
5921 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); |
5922 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5c7c16d8 YHW |
5923 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nac->zone_src), |
5924 | vl_mff_map, &out->zone_src.field, | |
5925 | tlv_bitmap); | |
5926 | if (error) { | |
5927 | return error; | |
04f48a68 YHW |
5928 | } |
5929 | ||
07659514 JS |
5930 | error = mf_check_src(&out->zone_src, NULL); |
5931 | if (error) { | |
5932 | return error; | |
5933 | } | |
5934 | ||
5935 | if (out->zone_src.n_bits != 16) { | |
5936 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
5937 | out->zone_src.n_bits); | |
5938 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
5939 | } | |
5940 | } else { | |
5941 | out->zone_src.field = NULL; | |
5942 | out->zone_imm = ntohs(nac->zone_imm); | |
5943 | } | |
5944 | ||
5945 | return 0; | |
5946 | } | |
5947 | ||
5948 | static enum ofperr | |
5949 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
04f48a68 | 5950 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
5951 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
5952 | struct ofpbuf *out) | |
07659514 | 5953 | { |
8e53fe8c | 5954 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 5955 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
a76a37ef JR |
5956 | int error; |
5957 | ||
07659514 | 5958 | conntrack->flags = ntohs(nac->flags); |
a76a37ef JR |
5959 | if (conntrack->flags & NX_CT_F_FORCE && |
5960 | !(conntrack->flags & NX_CT_F_COMMIT)) { | |
5961 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
5962 | goto out; | |
5963 | } | |
0a2869d5 | 5964 | |
5c7c16d8 | 5965 | error = decode_ct_zone(nac, conntrack, vl_mff_map, tlv_bitmap); |
07659514 JS |
5966 | if (error) { |
5967 | goto out; | |
5968 | } | |
5969 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 5970 | conntrack->alg = ntohs(nac->alg); |
07659514 | 5971 | |
8e53fe8c JS |
5972 | ofpbuf_pull(out, sizeof(*conntrack)); |
5973 | ||
0a2869d5 BP |
5974 | struct ofpbuf openflow = ofpbuf_const_initializer( |
5975 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
5976 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
5977 | ofp_version, | |
5978 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
5979 | out, OFPACT_CT, vl_mff_map, |
5980 | tlv_bitmap); | |
8e53fe8c JS |
5981 | if (error) { |
5982 | goto out; | |
5983 | } | |
5984 | ||
5985 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
5986 | out->header = &conntrack->ofpact; | |
ce058104 | 5987 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
5988 | |
5989 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
5990 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
5991 | const struct ofpact *a; |
5992 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
5993 | ||
5994 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
5995 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
5996 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
5997 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
5998 | "other than NAT without arguments are specified."); | |
5999 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6000 | goto out; | |
6001 | } | |
6002 | } | |
8e53fe8c JS |
6003 | } |
6004 | ||
07659514 | 6005 | out: |
8e53fe8c | 6006 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
6007 | return error; |
6008 | } | |
6009 | ||
6010 | static void | |
6011 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 6012 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
6013 | { |
6014 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
6015 | const size_t ofs = out->size; |
6016 | size_t len; | |
07659514 JS |
6017 | |
6018 | nac = put_NXAST_CT(out); | |
6019 | nac->flags = htons(conntrack->flags); | |
6020 | if (conntrack->zone_src.field) { | |
04f48a68 | 6021 | nac->zone_src = htonl(nxm_header_from_mff(conntrack->zone_src.field)); |
07659514 JS |
6022 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, |
6023 | conntrack->zone_src.n_bits); | |
6024 | } else { | |
6025 | nac->zone_src = htonl(0); | |
6026 | nac->zone_imm = htons(conntrack->zone_imm); | |
6027 | } | |
6028 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 6029 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
6030 | |
6031 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
6032 | ofpact_ct_get_action_len(conntrack), | |
6033 | out, ofp_version); | |
6034 | len += sizeof(*nac); | |
6035 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
6036 | nac->len = htons(len); | |
07659514 JS |
6037 | } |
6038 | ||
50f96b10 | 6039 | static char *OVS_WARN_UNUSED_RESULT |
efefbcae | 6040 | parse_NAT(char *arg, const struct ofpact_parse_params *pp); |
9ac0aada | 6041 | |
07659514 | 6042 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
efefbcae | 6043 | * action to 'pp->ofpacts'. |
07659514 JS |
6044 | * |
6045 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6046 | * error. The caller is responsible for freeing the returned string. */ | |
6047 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6048 | parse_CT(char *arg, const struct ofpact_parse_params *pp) |
07659514 | 6049 | { |
efefbcae | 6050 | const size_t ct_offset = ofpacts_pull(pp->ofpacts); |
07659514 JS |
6051 | struct ofpact_conntrack *oc; |
6052 | char *error = NULL; | |
6053 | char *key, *value; | |
6054 | ||
efefbcae | 6055 | oc = ofpact_put_CT(pp->ofpacts); |
07659514 JS |
6056 | oc->flags = 0; |
6057 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
6058 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6059 | if (!strcmp(key, "commit")) { | |
6060 | oc->flags |= NX_CT_F_COMMIT; | |
a76a37ef JR |
6061 | } else if (!strcmp(key, "force")) { |
6062 | oc->flags |= NX_CT_F_FORCE; | |
07659514 | 6063 | } else if (!strcmp(key, "table")) { |
4bc938cc BP |
6064 | if (!ofputil_table_from_string(value, pp->table_map, |
6065 | &oc->recirc_table)) { | |
6066 | error = xasprintf("unknown table %s", value); | |
6067 | } else if (oc->recirc_table == NX_CT_RECIRC_NONE) { | |
fd13c6b5 | 6068 | error = xasprintf("invalid table %#"PRIx8, oc->recirc_table); |
07659514 JS |
6069 | } |
6070 | } else if (!strcmp(key, "zone")) { | |
6071 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
6072 | ||
6073 | if (error) { | |
6074 | free(error); | |
6075 | error = mf_parse_subfield(&oc->zone_src, value); | |
6076 | if (error) { | |
6077 | return error; | |
6078 | } | |
6079 | } | |
d787ad39 JS |
6080 | } else if (!strcmp(key, "alg")) { |
6081 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada | 6082 | } else if (!strcmp(key, "nat")) { |
efefbcae | 6083 | const size_t nat_offset = ofpacts_pull(pp->ofpacts); |
9ac0aada | 6084 | |
efefbcae | 6085 | error = parse_NAT(value, pp); |
9ac0aada | 6086 | /* Update CT action pointer and length. */ |
efefbcae BP |
6087 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, nat_offset); |
6088 | oc = pp->ofpacts->header; | |
8e53fe8c JS |
6089 | } else if (!strcmp(key, "exec")) { |
6090 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
6091 | * nesting can be handled transparently. */ | |
76e3e669 | 6092 | enum ofputil_protocol usable_protocols2; |
efefbcae | 6093 | const size_t exec_offset = ofpacts_pull(pp->ofpacts); |
76e3e669 | 6094 | |
76e3e669 JR |
6095 | /* Initializes 'usable_protocol2', fold it back to |
6096 | * '*usable_protocols' afterwards, so that we do not lose | |
6097 | * restrictions already in there. */ | |
efefbcae BP |
6098 | struct ofpact_parse_params pp2 = *pp; |
6099 | pp2.usable_protocols = &usable_protocols2; | |
6100 | error = ofpacts_parse_copy(value, &pp2, false, OFPACT_CT); | |
6101 | *pp->usable_protocols &= usable_protocols2; | |
6102 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, exec_offset); | |
6103 | oc = pp->ofpacts->header; | |
07659514 JS |
6104 | } else { |
6105 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
6106 | } | |
6107 | if (error) { | |
6108 | break; | |
6109 | } | |
6110 | } | |
fce16ca1 | 6111 | if (!error && oc->flags & NX_CT_F_FORCE && !(oc->flags & NX_CT_F_COMMIT)) { |
a76a37ef JR |
6112 | error = xasprintf("\"force\" flag requires \"commit\" flag."); |
6113 | } | |
efefbcae BP |
6114 | ofpact_finish_CT(pp->ofpacts, &oc); |
6115 | ofpbuf_push_uninit(pp->ofpacts, ct_offset); | |
07659514 JS |
6116 | return error; |
6117 | } | |
6118 | ||
d787ad39 JS |
6119 | static void |
6120 | format_alg(int port, struct ds *s) | |
6121 | { | |
40c7b2fc JS |
6122 | switch(port) { |
6123 | case IPPORT_FTP: | |
b1c5bf1f | 6124 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
6125 | break; |
6126 | case IPPORT_TFTP: | |
6127 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
6128 | break; | |
6129 | case 0: | |
6130 | /* Don't print. */ | |
6131 | break; | |
6132 | default: | |
b1c5bf1f | 6133 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 6134 | break; |
d787ad39 JS |
6135 | } |
6136 | } | |
6137 | ||
50f96b10 | 6138 | static void format_NAT(const struct ofpact_nat *, |
efefbcae | 6139 | const struct ofpact_format_params *fp); |
9ac0aada | 6140 | |
07659514 | 6141 | static void |
50f96b10 | 6142 | format_CT(const struct ofpact_conntrack *a, |
efefbcae | 6143 | const struct ofpact_format_params *fp) |
07659514 | 6144 | { |
efefbcae | 6145 | ds_put_format(fp->s, "%sct(%s", colors.paren, colors.end); |
07659514 | 6146 | if (a->flags & NX_CT_F_COMMIT) { |
efefbcae | 6147 | ds_put_format(fp->s, "%scommit%s,", colors.value, colors.end); |
07659514 | 6148 | } |
a76a37ef | 6149 | if (a->flags & NX_CT_F_FORCE) { |
efefbcae | 6150 | ds_put_format(fp->s, "%sforce%s,", colors.value, colors.end); |
a76a37ef | 6151 | } |
07659514 | 6152 | if (a->recirc_table != NX_CT_RECIRC_NONE) { |
4bc938cc BP |
6153 | ds_put_format(fp->s, "%stable=%s", colors.special, colors.end); |
6154 | ofputil_format_table(a->recirc_table, fp->table_map, fp->s); | |
6155 | ds_put_char(fp->s, ','); | |
07659514 JS |
6156 | } |
6157 | if (a->zone_src.field) { | |
efefbcae BP |
6158 | ds_put_format(fp->s, "%szone=%s", colors.param, colors.end); |
6159 | mf_format_subfield(&a->zone_src, fp->s); | |
6160 | ds_put_char(fp->s, ','); | |
07659514 | 6161 | } else if (a->zone_imm) { |
efefbcae | 6162 | ds_put_format(fp->s, "%szone=%s%"PRIu16",", |
b1c5bf1f | 6163 | colors.param, colors.end, a->zone_imm); |
07659514 | 6164 | } |
9ac0aada JR |
6165 | /* If the first action is a NAT action, format it outside of the 'exec' |
6166 | * envelope. */ | |
6167 | const struct ofpact *action = a->actions; | |
6168 | size_t actions_len = ofpact_ct_get_action_len(a); | |
6169 | if (actions_len && action->type == OFPACT_NAT) { | |
efefbcae BP |
6170 | format_NAT(ofpact_get_NAT(action), fp); |
6171 | ds_put_char(fp->s, ','); | |
9ac0aada JR |
6172 | actions_len -= OFPACT_ALIGN(action->len); |
6173 | action = ofpact_next(action); | |
6174 | } | |
6175 | if (actions_len) { | |
efefbcae BP |
6176 | ds_put_format(fp->s, "%sexec(%s", colors.paren, colors.end); |
6177 | ofpacts_format(action, actions_len, fp); | |
6178 | ds_put_format(fp->s, "%s),%s", colors.paren, colors.end); | |
8e53fe8c | 6179 | } |
efefbcae BP |
6180 | format_alg(a->alg, fp->s); |
6181 | ds_chomp(fp->s, ','); | |
6182 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
07659514 | 6183 | } |
9ac0aada | 6184 | \f |
72fe7578 BP |
6185 | /* ct_clear action. */ |
6186 | ||
6187 | static enum ofperr | |
6188 | decode_NXAST_RAW_CT_CLEAR(struct ofpbuf *out) | |
6189 | { | |
6190 | ofpact_put_CT_CLEAR(out); | |
6191 | return 0; | |
6192 | } | |
6193 | ||
6194 | static void | |
6195 | encode_CT_CLEAR(const struct ofpact_null *null OVS_UNUSED, | |
6196 | enum ofp_version ofp_version OVS_UNUSED, | |
6197 | struct ofpbuf *out) | |
6198 | { | |
6199 | put_NXAST_CT_CLEAR(out); | |
6200 | } | |
6201 | ||
6202 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6203 | parse_CT_CLEAR(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
72fe7578 | 6204 | { |
efefbcae | 6205 | ofpact_put_CT_CLEAR(pp->ofpacts); |
72fe7578 BP |
6206 | return NULL; |
6207 | } | |
6208 | ||
6209 | static void | |
50f96b10 | 6210 | format_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6211 | const struct ofpact_format_params *fp) |
72fe7578 | 6212 | { |
efefbcae | 6213 | ds_put_format(fp->s, "%sct_clear%s", colors.value, colors.end); |
50f96b10 BP |
6214 | } |
6215 | \f | |
9ac0aada JR |
6216 | /* NAT action. */ |
6217 | ||
6218 | /* Which optional fields are present? */ | |
6219 | enum nx_nat_range { | |
6220 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
6221 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
6222 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
6223 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
6224 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
6225 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
6226 | }; | |
6227 | ||
6228 | /* Action structure for NXAST_NAT. */ | |
6229 | struct nx_action_nat { | |
6230 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6231 | ovs_be16 len; /* At least 16. */ | |
6232 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6233 | ovs_be16 subtype; /* NXAST_NAT. */ | |
6234 | uint8_t pad[2]; /* Must be zero. */ | |
6235 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
6236 | * Unspecified flag bits must be zero. */ | |
6237 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
6238 | /* Followed by optional parameters as specified by 'range_present' */ | |
6239 | }; | |
6240 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
6241 | ||
6242 | static void | |
6243 | encode_NAT(const struct ofpact_nat *nat, | |
6244 | enum ofp_version ofp_version OVS_UNUSED, | |
6245 | struct ofpbuf *out) | |
6246 | { | |
6247 | struct nx_action_nat *nan; | |
6248 | const size_t ofs = out->size; | |
6249 | uint16_t range_present = 0; | |
6250 | ||
6251 | nan = put_NXAST_NAT(out); | |
6252 | nan->flags = htons(nat->flags); | |
6253 | if (nat->range_af == AF_INET) { | |
6254 | if (nat->range.addr.ipv4.min) { | |
6255 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6256 | *min = nat->range.addr.ipv4.min; | |
6257 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
6258 | } | |
6259 | if (nat->range.addr.ipv4.max) { | |
6260 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6261 | *max = nat->range.addr.ipv4.max; | |
6262 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
6263 | } | |
6264 | } else if (nat->range_af == AF_INET6) { | |
6265 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6266 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
6267 | *min = nat->range.addr.ipv6.min; | |
6268 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
6269 | } | |
6270 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
6271 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
6272 | *max = nat->range.addr.ipv6.max; | |
6273 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
6274 | } | |
6275 | } | |
6276 | if (nat->range_af != AF_UNSPEC) { | |
6277 | if (nat->range.proto.min) { | |
6278 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6279 | *min = htons(nat->range.proto.min); | |
6280 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
6281 | } | |
6282 | if (nat->range.proto.max) { | |
6283 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6284 | *max = htons(nat->range.proto.max); | |
6285 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
6286 | } | |
6287 | } | |
6288 | pad_ofpat(out, ofs); | |
6289 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
6290 | nan->range_present = htons(range_present); | |
6291 | } | |
6292 | ||
6293 | static enum ofperr | |
6294 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
6295 | enum ofp_version ofp_version OVS_UNUSED, | |
6296 | struct ofpbuf *out) | |
6297 | { | |
6298 | struct ofpact_nat *nat; | |
6299 | uint16_t range_present = ntohs(nan->range_present); | |
6300 | const char *opts = (char *)(nan + 1); | |
6301 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
6302 | ||
6303 | nat = ofpact_put_NAT(out); | |
6304 | nat->flags = ntohs(nan->flags); | |
6305 | ||
ae8b9260 JR |
6306 | /* Check for unknown or mutually exclusive flags. */ |
6307 | if ((nat->flags & ~NX_NAT_F_MASK) | |
6308 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
6309 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
6310 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
6311 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6312 | } | |
6313 | ||
9ac0aada JR |
6314 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
6315 | (LEN >= sizeof(TYPE) \ | |
6316 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
6317 | SRC += sizeof(TYPE)) \ | |
6318 | : NULL) | |
6319 | ||
6320 | nat->range_af = AF_UNSPEC; | |
6321 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
6322 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
6323 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6324 | } | |
6325 | ||
6326 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
6327 | || !nat->range.addr.ipv4.min) { | |
6328 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6329 | } | |
6330 | ||
6331 | nat->range_af = AF_INET; | |
6332 | ||
6333 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6334 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
6335 | ovs_be32)) { | |
6336 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6337 | } | |
6338 | if (ntohl(nat->range.addr.ipv4.max) | |
6339 | < ntohl(nat->range.addr.ipv4.min)) { | |
6340 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6341 | } | |
6342 | } | |
6343 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6344 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6345 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
6346 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
6347 | struct in6_addr) | |
6348 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6349 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6350 | } | |
6351 | ||
6352 | nat->range_af = AF_INET6; | |
6353 | ||
6354 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6355 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
6356 | struct in6_addr)) { | |
6357 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6358 | } | |
6359 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
6360 | sizeof(struct in6_addr)) < 0) { | |
6361 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6362 | } | |
6363 | } | |
6364 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6365 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6366 | } | |
6367 | ||
6368 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
6369 | ovs_be16 proto; | |
6370 | ||
6371 | if (nat->range_af == AF_UNSPEC) { | |
6372 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6373 | } | |
6374 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
6375 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6376 | } | |
6377 | nat->range.proto.min = ntohs(proto); | |
6378 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6379 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
6380 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6381 | } | |
6382 | nat->range.proto.max = ntohs(proto); | |
6383 | if (nat->range.proto.max < nat->range.proto.min) { | |
6384 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6385 | } | |
6386 | } | |
6387 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6388 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6389 | } | |
6390 | ||
6391 | return 0; | |
6392 | } | |
6393 | ||
6394 | static void | |
efefbcae | 6395 | format_NAT(const struct ofpact_nat *a, const struct ofpact_format_params *fp) |
9ac0aada | 6396 | { |
efefbcae | 6397 | ds_put_format(fp->s, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
6398 | |
6399 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
efefbcae BP |
6400 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
6401 | ds_put_format(fp->s, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
b1c5bf1f | 6402 | colors.param, colors.end); |
9ac0aada JR |
6403 | |
6404 | if (a->range_af != AF_UNSPEC) { | |
efefbcae | 6405 | ds_put_format(fp->s, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
6406 | |
6407 | if (a->range_af == AF_INET) { | |
efefbcae | 6408 | ds_put_format(fp->s, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); |
9ac0aada JR |
6409 | |
6410 | if (a->range.addr.ipv4.max | |
6411 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
efefbcae | 6412 | ds_put_format(fp->s, "-"IP_FMT, |
9ac0aada JR |
6413 | IP_ARGS(a->range.addr.ipv4.max)); |
6414 | } | |
6415 | } else if (a->range_af == AF_INET6) { | |
efefbcae | 6416 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, fp->s, |
9ac0aada JR |
6417 | a->range.proto.min); |
6418 | ||
6419 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
6420 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
6421 | sizeof(struct in6_addr)) != 0) { | |
efefbcae BP |
6422 | ds_put_char(fp->s, '-'); |
6423 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, fp->s, | |
9ac0aada JR |
6424 | a->range.proto.min); |
6425 | } | |
6426 | } | |
6427 | if (a->range.proto.min) { | |
efefbcae BP |
6428 | ds_put_char(fp->s, ':'); |
6429 | ds_put_format(fp->s, "%"PRIu16, a->range.proto.min); | |
9ac0aada JR |
6430 | |
6431 | if (a->range.proto.max | |
6432 | && a->range.proto.max != a->range.proto.min) { | |
efefbcae | 6433 | ds_put_format(fp->s, "-%"PRIu16, a->range.proto.max); |
9ac0aada JR |
6434 | } |
6435 | } | |
efefbcae | 6436 | ds_put_char(fp->s, ','); |
9ac0aada JR |
6437 | |
6438 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
efefbcae | 6439 | ds_put_format(fp->s, "%spersistent%s,", |
b1c5bf1f | 6440 | colors.value, colors.end); |
9ac0aada JR |
6441 | } |
6442 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
efefbcae | 6443 | ds_put_format(fp->s, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
6444 | } |
6445 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
efefbcae | 6446 | ds_put_format(fp->s, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
6447 | } |
6448 | } | |
efefbcae BP |
6449 | ds_chomp(fp->s, ','); |
6450 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
9ac0aada JR |
6451 | } |
6452 | } | |
6453 | ||
6454 | static char * OVS_WARN_UNUSED_RESULT | |
6455 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
6456 | { | |
6457 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
6458 | int n = 0; | |
6459 | ||
6460 | on->range_af = AF_UNSPEC; | |
6461 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6462 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
6463 | on->range_af = AF_INET; | |
6464 | ||
6465 | if (s[n] == '-') { | |
6466 | n++; | |
6467 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6468 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
6469 | || (ntohl(on->range.addr.ipv4.max) | |
6470 | < ntohl(on->range.addr.ipv4.min))) { | |
6471 | goto error; | |
6472 | } | |
6473 | } | |
6474 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
6475 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
6476 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
6477 | on->range_af = AF_INET6; | |
6478 | ||
6479 | if (s[n] == '-') { | |
6480 | n++; | |
6481 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
6482 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
6483 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
6484 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
6485 | sizeof on->range.addr.ipv6.max) < 0) { | |
6486 | goto error; | |
6487 | } | |
6488 | } | |
6489 | } | |
6490 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
6491 | n++; | |
6492 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
6493 | goto error; | |
6494 | } | |
6495 | if (s[n] == '-') { | |
6496 | n++; | |
6497 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
6498 | || on->range.proto.max < on->range.proto.min) { | |
6499 | goto error; | |
6500 | } | |
6501 | } | |
6502 | } | |
6503 | if (strlen(s) != n) { | |
6504 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
6505 | &s[n], s, n); | |
6506 | } | |
6507 | return NULL; | |
6508 | error: | |
6509 | return xasprintf("invalid nat range \"%s\"", s); | |
6510 | } | |
6511 | ||
6512 | ||
6513 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
efefbcae | 6514 | * action to 'pp->ofpacts'. |
9ac0aada JR |
6515 | * |
6516 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6517 | * error. The caller is responsible for freeing the returned string. */ | |
6518 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6519 | parse_NAT(char *arg, const struct ofpact_parse_params *pp) |
9ac0aada | 6520 | { |
efefbcae | 6521 | struct ofpact_nat *on = ofpact_put_NAT(pp->ofpacts); |
9ac0aada JR |
6522 | char *key, *value; |
6523 | ||
6524 | on->flags = 0; | |
6525 | on->range_af = AF_UNSPEC; | |
6526 | ||
6527 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6528 | char *error = NULL; | |
6529 | ||
6530 | if (!strcmp(key, "src")) { | |
6531 | on->flags |= NX_NAT_F_SRC; | |
6532 | error = str_to_nat_range(value, on); | |
6533 | } else if (!strcmp(key, "dst")) { | |
6534 | on->flags |= NX_NAT_F_DST; | |
6535 | error = str_to_nat_range(value, on); | |
6536 | } else if (!strcmp(key, "persistent")) { | |
6537 | on->flags |= NX_NAT_F_PERSISTENT; | |
6538 | } else if (!strcmp(key, "hash")) { | |
6539 | on->flags |= NX_NAT_F_PROTO_HASH; | |
6540 | } else if (!strcmp(key, "random")) { | |
6541 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
6542 | } else { | |
6543 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
6544 | key); | |
6545 | } | |
6546 | if (error) { | |
6547 | return error; | |
6548 | } | |
6549 | } | |
6550 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 6551 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
6552 | } |
6553 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
6554 | if (on->flags) { | |
ae8b9260 | 6555 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
6556 | } |
6557 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 6558 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
6559 | } |
6560 | } | |
ae8b9260 JR |
6561 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
6562 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
6563 | } | |
6564 | ||
9ac0aada JR |
6565 | return NULL; |
6566 | } | |
6567 | ||
aaca4fe0 WT |
6568 | /* Truncate output action. */ |
6569 | struct nx_action_output_trunc { | |
6570 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6571 | ovs_be16 len; /* At least 16. */ | |
6572 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6573 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
6574 | ovs_be16 port; /* Output port */ | |
6575 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
6576 | }; | |
6577 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
6578 | ||
6579 | static enum ofperr | |
6580 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
6581 | enum ofp_version ofp_version OVS_UNUSED, | |
6582 | struct ofpbuf *out) | |
6583 | { | |
6584 | struct ofpact_output_trunc *output_trunc; | |
6585 | ||
6586 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
6587 | output_trunc->max_len = ntohl(natrc->max_len); | |
6588 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
6589 | ||
6590 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
6591 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6592 | } | |
6593 | return 0; | |
6594 | } | |
6595 | ||
6596 | static void | |
6597 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
6598 | enum ofp_version ofp_version OVS_UNUSED, | |
6599 | struct ofpbuf *out) | |
6600 | { | |
6601 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
6602 | ||
6603 | natrc->max_len = htonl(output_trunc->max_len); | |
6604 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
6605 | } | |
6606 | ||
6607 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 6608 | parse_OUTPUT_TRUNC(const char *arg, |
efefbcae | 6609 | const struct ofpact_parse_params *pp OVS_UNUSED) |
aaca4fe0 WT |
6610 | { |
6611 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
6612 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
6613 | return xasprintf("unknown action %s", arg); | |
6614 | } | |
6615 | ||
6616 | static void | |
50f96b10 | 6617 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, |
efefbcae | 6618 | const struct ofpact_format_params *fp) |
aaca4fe0 | 6619 | { |
efefbcae BP |
6620 | ds_put_format(fp->s, "%soutput%s(port=", colors.special, colors.end); |
6621 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
6622 | ds_put_format(fp->s, ",max_len=%"PRIu32")", a->max_len); | |
aaca4fe0 WT |
6623 | } |
6624 | ||
d4abaff5 | 6625 | \f |
c2d936a4 BP |
6626 | /* Meter instruction. */ |
6627 | ||
6628 | static void | |
6629 | encode_METER(const struct ofpact_meter *meter, | |
6630 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6631 | { | |
6632 | if (ofp_version >= OFP13_VERSION) { | |
6633 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
6634 | } | |
6635 | } | |
6636 | ||
cab50449 | 6637 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6638 | parse_METER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6639 | { |
efefbcae BP |
6640 | *pp->usable_protocols &= OFPUTIL_P_OF13_UP; |
6641 | return str_to_u32(arg, &ofpact_put_METER(pp->ofpacts)->meter_id); | |
c2d936a4 BP |
6642 | } |
6643 | ||
6644 | static void | |
50f96b10 | 6645 | format_METER(const struct ofpact_meter *a, |
efefbcae | 6646 | const struct ofpact_format_params *fp) |
c2d936a4 | 6647 | { |
efefbcae | 6648 | ds_put_format(fp->s, "%smeter:%s%"PRIu32, |
b1c5bf1f | 6649 | colors.param, colors.end, a->meter_id); |
c2d936a4 BP |
6650 | } |
6651 | \f | |
6652 | /* Clear-Actions instruction. */ | |
6653 | ||
6654 | static void | |
6655 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
6656 | enum ofp_version ofp_version OVS_UNUSED, | |
6657 | struct ofpbuf *out OVS_UNUSED) | |
6658 | { | |
6659 | if (ofp_version > OFP10_VERSION) { | |
6660 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
6661 | } | |
6662 | } | |
6663 | ||
cab50449 | 6664 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6665 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 6666 | { |
efefbcae | 6667 | ofpact_put_CLEAR_ACTIONS(pp->ofpacts); |
c2d936a4 BP |
6668 | return NULL; |
6669 | } | |
6670 | ||
6671 | static void | |
50f96b10 | 6672 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6673 | const struct ofpact_format_params *fp) |
c2d936a4 | 6674 | { |
efefbcae | 6675 | ds_put_format(fp->s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 BP |
6676 | } |
6677 | \f | |
6678 | /* Write-Actions instruction. */ | |
6679 | ||
6680 | static void | |
6681 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
6682 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6683 | { | |
6684 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 6685 | const size_t ofs = out->size; |
c2d936a4 BP |
6686 | |
6687 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
6688 | ofpacts_put_openflow_actions(actions->actions, | |
6689 | ofpact_nest_get_action_len(actions), | |
6690 | out, ofp_version); | |
6691 | ofpacts_update_instruction_actions(out, ofs); | |
6692 | } | |
6693 | } | |
6694 | ||
cab50449 | 6695 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6696 | parse_WRITE_ACTIONS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6697 | { |
efefbcae | 6698 | size_t ofs = ofpacts_pull(pp->ofpacts); |
c2d936a4 BP |
6699 | struct ofpact_nest *on; |
6700 | char *error; | |
c2d936a4 BP |
6701 | |
6702 | /* Add a Write-Actions instruction and then pull it off. */ | |
efefbcae BP |
6703 | ofpact_put(pp->ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); |
6704 | ofpbuf_pull(pp->ofpacts, sizeof *on); | |
c2d936a4 BP |
6705 | |
6706 | /* Parse nested actions. | |
6707 | * | |
6708 | * We pulled off "write-actions" and the previous actions because the | |
6709 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
6710 | * that it doesn't actually include the nested actions. That means that | |
6711 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
6712 | * follows a Write-Actions, which is an invalid order. */ | |
efefbcae | 6713 | error = ofpacts_parse(arg, pp, false, OFPACT_WRITE_ACTIONS); |
c2d936a4 BP |
6714 | |
6715 | /* Put the Write-Actions back on and update its length. */ | |
efefbcae BP |
6716 | on = ofpbuf_push_uninit(pp->ofpacts, sizeof *on); |
6717 | on->ofpact.len = pp->ofpacts->size; | |
c2d936a4 BP |
6718 | |
6719 | /* Put any previous actions or instructions back on. */ | |
efefbcae | 6720 | ofpbuf_push_uninit(pp->ofpacts, ofs); |
c2d936a4 BP |
6721 | |
6722 | return error; | |
6723 | } | |
6724 | ||
6725 | static void | |
50f96b10 | 6726 | format_WRITE_ACTIONS(const struct ofpact_nest *a, |
efefbcae | 6727 | const struct ofpact_format_params *fp) |
c2d936a4 | 6728 | { |
efefbcae BP |
6729 | ds_put_format(fp->s, "%swrite_actions(%s", colors.paren, colors.end); |
6730 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
6731 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 BP |
6732 | } |
6733 | \f | |
6734 | /* Action structure for NXAST_WRITE_METADATA. | |
6735 | * | |
6736 | * Modifies the 'mask' bits of the metadata value. */ | |
6737 | struct nx_action_write_metadata { | |
6738 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6739 | ovs_be16 len; /* Length is 32. */ | |
6740 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6741 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
6742 | uint8_t zeros[6]; /* Must be zero. */ | |
6743 | ovs_be64 metadata; /* Metadata register. */ | |
6744 | ovs_be64 mask; /* Metadata mask. */ | |
6745 | }; | |
6746 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
6747 | ||
6748 | static enum ofperr | |
6749 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 6750 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
6751 | struct ofpbuf *out) |
6752 | { | |
6753 | struct ofpact_metadata *om; | |
6754 | ||
6755 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
6756 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6757 | } | |
6758 | ||
6759 | om = ofpact_put_WRITE_METADATA(out); | |
6760 | om->metadata = nawm->metadata; | |
6761 | om->mask = nawm->mask; | |
6762 | ||
6763 | return 0; | |
6764 | } | |
6765 | ||
6766 | static void | |
6767 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
6768 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6769 | { | |
6770 | if (ofp_version == OFP10_VERSION) { | |
6771 | struct nx_action_write_metadata *nawm; | |
6772 | ||
6773 | nawm = put_NXAST_WRITE_METADATA(out); | |
6774 | nawm->metadata = metadata->metadata; | |
6775 | nawm->mask = metadata->mask; | |
6776 | } else { | |
6777 | struct ofp11_instruction_write_metadata *oiwm; | |
6778 | ||
6779 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
6780 | oiwm->metadata = metadata->metadata; | |
6781 | oiwm->metadata_mask = metadata->mask; | |
6782 | } | |
6783 | } | |
6784 | ||
cab50449 | 6785 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6786 | parse_WRITE_METADATA(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
6787 | { |
6788 | struct ofpact_metadata *om; | |
6789 | char *mask = strchr(arg, '/'); | |
6790 | ||
efefbcae | 6791 | *pp->usable_protocols &= OFPUTIL_P_NXM_OF11_UP; |
c2d936a4 | 6792 | |
efefbcae | 6793 | om = ofpact_put_WRITE_METADATA(pp->ofpacts); |
c2d936a4 BP |
6794 | if (mask) { |
6795 | char *error; | |
6796 | ||
6797 | *mask = '\0'; | |
6798 | error = str_to_be64(mask + 1, &om->mask); | |
6799 | if (error) { | |
6800 | return error; | |
6801 | } | |
6802 | } else { | |
6803 | om->mask = OVS_BE64_MAX; | |
6804 | } | |
6805 | ||
6806 | return str_to_be64(arg, &om->metadata); | |
6807 | } | |
6808 | ||
6809 | static void | |
50f96b10 | 6810 | format_WRITE_METADATA(const struct ofpact_metadata *a, |
efefbcae | 6811 | const struct ofpact_format_params *fp) |
c2d936a4 | 6812 | { |
efefbcae | 6813 | ds_put_format(fp->s, "%swrite_metadata:%s%#"PRIx64, |
b1c5bf1f | 6814 | colors.param, colors.end, ntohll(a->metadata)); |
c2d936a4 | 6815 | if (a->mask != OVS_BE64_MAX) { |
efefbcae | 6816 | ds_put_format(fp->s, "/%#"PRIx64, ntohll(a->mask)); |
c2d936a4 | 6817 | } |
4cceacb9 | 6818 | } |
f25d0cf3 | 6819 | \f |
c2d936a4 | 6820 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
6821 | |
6822 | static void | |
c2d936a4 BP |
6823 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
6824 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 6825 | { |
c2d936a4 BP |
6826 | if (ofp_version == OFP10_VERSION) { |
6827 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 6828 | |
c2d936a4 BP |
6829 | nar = put_NXAST_RESUBMIT_TABLE(out); |
6830 | nar->table = goto_table->table_id; | |
6831 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
6832 | } else { | |
6833 | struct ofp11_instruction_goto_table *oigt; | |
6834 | ||
6835 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
6836 | oigt->table_id = goto_table->table_id; | |
6837 | memset(oigt->pad, 0, sizeof oigt->pad); | |
6838 | } | |
6839 | } | |
6840 | ||
cab50449 | 6841 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6842 | parse_GOTO_TABLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6843 | { |
efefbcae | 6844 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(pp->ofpacts); |
4bc938cc BP |
6845 | if (!ofputil_table_from_string(arg, pp->table_map, &ogt->table_id)) { |
6846 | return xasprintf("unknown table \"%s\"", arg); | |
c2d936a4 | 6847 | } |
4bc938cc | 6848 | return NULL; |
c2d936a4 BP |
6849 | } |
6850 | ||
6851 | static void | |
50f96b10 | 6852 | format_GOTO_TABLE(const struct ofpact_goto_table *a, |
efefbcae | 6853 | const struct ofpact_format_params *fp) |
c2d936a4 | 6854 | { |
4bc938cc BP |
6855 | ds_put_format(fp->s, "%sgoto_table:%s", colors.param, colors.end); |
6856 | ofputil_format_table(a->table_id, fp->table_map, fp->s); | |
c2d936a4 BP |
6857 | } |
6858 | \f | |
6859 | static void | |
5ad4b3f8 | 6860 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
6861 | const struct ofp_action_header *bad_action, enum ofperr error) |
6862 | { | |
6863 | if (!VLOG_DROP_WARN(&rl)) { | |
6864 | struct ds s; | |
6865 | ||
6866 | ds_init(&s); | |
5ad4b3f8 | 6867 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
6868 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
6869 | (char *)bad_action - (char *)actions, | |
6870 | ofperr_get_name(error), ds_cstr(&s)); | |
6871 | ds_destroy(&s); | |
6872 | } | |
6873 | } | |
6874 | ||
6875 | static enum ofperr | |
6876 | ofpacts_decode(const void *actions, size_t actions_len, | |
04f48a68 | 6877 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
6878 | const struct vl_mff_map *vl_mff_map, |
6879 | uint64_t *ofpacts_tlv_bitmap, struct ofpbuf *ofpacts) | |
c2d936a4 | 6880 | { |
0a2869d5 | 6881 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
6882 | while (openflow.size) { |
6883 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
6884 | enum ofp_raw_action_type raw; |
6885 | enum ofperr error; | |
6886 | uint64_t arg; | |
6887 | ||
6888 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
6889 | if (!error) { | |
04f48a68 | 6890 | error = ofpact_decode(action, raw, ofp_version, arg, vl_mff_map, |
5c7c16d8 | 6891 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
6892 | } |
6893 | ||
6894 | if (error) { | |
5ad4b3f8 | 6895 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
6896 | return error; |
6897 | } | |
6898 | } | |
c2d936a4 BP |
6899 | return 0; |
6900 | } | |
6901 | ||
6902 | static enum ofperr | |
6903 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
6904 | unsigned int actions_len, | |
6905 | enum ofp_version version, | |
6906 | uint32_t allowed_ovsinsts, | |
d824b5b7 | 6907 | struct ofpbuf *ofpacts, |
04f48a68 | 6908 | enum ofpact_type outer_action, |
5c7c16d8 YHW |
6909 | const struct vl_mff_map *vl_mff_map, |
6910 | uint64_t *ofpacts_tlv_bitmap) | |
c2d936a4 BP |
6911 | { |
6912 | const struct ofp_action_header *actions; | |
9abca1e5 | 6913 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
6914 | enum ofperr error; |
6915 | ||
c2d936a4 BP |
6916 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
6917 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
6918 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
6919 | return OFPERR_OFPBRC_BAD_LEN; | |
6920 | } | |
6921 | ||
6922 | actions = ofpbuf_try_pull(openflow, actions_len); | |
6923 | if (actions == NULL) { | |
6924 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
6925 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6926 | actions_len, openflow->size); |
c2d936a4 BP |
6927 | return OFPERR_OFPBRC_BAD_LEN; |
6928 | } | |
6929 | ||
5c7c16d8 YHW |
6930 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
6931 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 | 6932 | if (error) { |
9abca1e5 | 6933 | ofpacts->size = orig_size; |
c2d936a4 BP |
6934 | return error; |
6935 | } | |
6936 | ||
d824b5b7 JS |
6937 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
6938 | outer_action); | |
c2d936a4 | 6939 | if (error) { |
9abca1e5 | 6940 | ofpacts->size = orig_size; |
c2d936a4 BP |
6941 | } |
6942 | return error; | |
6943 | } | |
6944 | ||
9abca1e5 BP |
6945 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
6946 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
6947 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
6948 | * Returns 0 if successful, otherwise an OpenFlow error. |
6949 | * | |
6950 | * Actions are processed according to their OpenFlow version which | |
6951 | * is provided in the 'version' parameter. | |
6952 | * | |
6953 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
6954 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
6955 | * function. | |
6956 | * | |
5c7c16d8 YHW |
6957 | * 'vl_mff_map' and 'ofpacts_tlv_bitmap' are optional. If 'vl_mff_map' is |
6958 | * provided, it is used to get variable length mf_fields with configured | |
6959 | * length in the actions. If an action uses a variable length mf_field, | |
6960 | * 'ofpacts_tlv_bitmap' is updated accordingly for ref counting. If | |
6961 | * 'vl_mff_map' is not provided, the default mf_fields with maximum length | |
6962 | * will be used. | |
6963 | * | |
c2d936a4 BP |
6964 | * The parsed actions are valid generically, but they may not be valid in a |
6965 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
6966 | * generically, but specific datapaths may only support port numbers in a | |
6967 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
6968 | * valid in a specific context. */ | |
6969 | enum ofperr | |
6970 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
6971 | unsigned int actions_len, | |
6972 | enum ofp_version version, | |
04f48a68 | 6973 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 6974 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
6975 | struct ofpbuf *ofpacts) |
6976 | { | |
6977 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
6978 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
6979 | ofpacts, 0, vl_mff_map, |
6980 | ofpacts_tlv_bitmap); | |
c2d936a4 BP |
6981 | } |
6982 | \f | |
39d4382e | 6983 | /* OpenFlow 1.1 action sets. */ |
c2d936a4 | 6984 | |
39d4382e KS |
6985 | /* Append ofpact 'a' onto the tail of 'out' */ |
6986 | static void | |
6987 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) | |
6988 | { | |
6989 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); | |
6990 | } | |
c2d936a4 | 6991 | |
39d4382e KS |
6992 | /* The order in which actions in an action set get executed. This is only for |
6993 | * the actions where only the last instance added is used. */ | |
6994 | #define ACTION_SET_ORDER \ | |
6995 | SLOT(OFPACT_STRIP_VLAN) \ | |
6996 | SLOT(OFPACT_POP_MPLS) \ | |
6997 | SLOT(OFPACT_DECAP) \ | |
6998 | SLOT(OFPACT_ENCAP) \ | |
6999 | SLOT(OFPACT_PUSH_MPLS) \ | |
7000 | SLOT(OFPACT_PUSH_VLAN) \ | |
7001 | SLOT(OFPACT_DEC_TTL) \ | |
7002 | SLOT(OFPACT_DEC_MPLS_TTL) \ | |
7003 | SLOT(OFPACT_DEC_NSH_TTL) | |
7004 | ||
7005 | /* Priority for "final actions" in an action set. An action set only gets | |
7006 | * executed at all if at least one of these actions is present. If more than | |
7007 | * one is present, then only the one later in this list is executed (and if | |
7008 | * more than one of a given type, the one later in the action set). */ | |
7009 | #define ACTION_SET_FINAL_PRIORITY \ | |
7010 | FINAL(OFPACT_CT) \ | |
7011 | FINAL(OFPACT_CT_CLEAR) \ | |
7012 | FINAL(OFPACT_RESUBMIT) \ | |
7013 | FINAL(OFPACT_OUTPUT) \ | |
7014 | FINAL(OFPACT_GROUP) | |
7015 | ||
7016 | enum action_set_class { | |
7017 | /* Actions that individually can usefully appear only once in an action | |
7018 | * set. If they do appear more than once, then only the last instance is | |
7019 | * honored. */ | |
7020 | #define SLOT(OFPACT) ACTION_SLOT_##OFPACT, | |
7021 | ACTION_SET_ORDER | |
7022 | #undef SLOT | |
7023 | ||
7024 | /* Final actions. */ | |
7025 | #define FINAL(OFPACT) ACTION_SLOT_##OFPACT, | |
7026 | ACTION_SET_FINAL_PRIORITY | |
7027 | #undef FINAL | |
7028 | ||
7029 | /* Actions that can appear in an action set more than once and are executed | |
7030 | * in order. */ | |
7031 | ACTION_SLOT_SET_OR_MOVE, | |
7032 | ||
7033 | /* Actions that shouldn't appear in the action set at all. */ | |
7034 | ACTION_SLOT_INVALID | |
7035 | }; | |
7036 | ||
7037 | /* Count the action set slots. */ | |
7038 | #define SLOT(OFPACT) +1 | |
7039 | enum { N_ACTION_SLOTS = ACTION_SET_ORDER }; | |
7040 | #undef SLOT | |
7041 | ||
7042 | static enum action_set_class | |
7043 | action_set_classify(const struct ofpact *a) | |
c2d936a4 BP |
7044 | { |
7045 | switch (a->type) { | |
39d4382e KS |
7046 | #define SLOT(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; |
7047 | ACTION_SET_ORDER | |
7048 | #undef SLOT | |
7049 | ||
7050 | #define FINAL(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; | |
7051 | ACTION_SET_FINAL_PRIORITY | |
7052 | #undef FINAL | |
7053 | ||
c2d936a4 | 7054 | case OFPACT_SET_FIELD: |
1b0ee636 | 7055 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
7056 | case OFPACT_SET_ETH_DST: |
7057 | case OFPACT_SET_ETH_SRC: | |
7058 | case OFPACT_SET_IP_DSCP: | |
7059 | case OFPACT_SET_IP_ECN: | |
7060 | case OFPACT_SET_IP_TTL: | |
7061 | case OFPACT_SET_IPV4_DST: | |
7062 | case OFPACT_SET_IPV4_SRC: | |
7063 | case OFPACT_SET_L4_DST_PORT: | |
7064 | case OFPACT_SET_L4_SRC_PORT: | |
7065 | case OFPACT_SET_MPLS_LABEL: | |
7066 | case OFPACT_SET_MPLS_TC: | |
7067 | case OFPACT_SET_MPLS_TTL: | |
7068 | case OFPACT_SET_QUEUE: | |
7069 | case OFPACT_SET_TUNNEL: | |
7070 | case OFPACT_SET_VLAN_PCP: | |
7071 | case OFPACT_SET_VLAN_VID: | |
39d4382e KS |
7072 | return ACTION_SLOT_SET_OR_MOVE; |
7073 | ||
c2d936a4 BP |
7074 | case OFPACT_BUNDLE: |
7075 | case OFPACT_CLEAR_ACTIONS: | |
7ae62a67 | 7076 | case OFPACT_CLONE: |
9ac0aada | 7077 | case OFPACT_NAT: |
c2d936a4 | 7078 | case OFPACT_CONTROLLER: |
c2d936a4 BP |
7079 | case OFPACT_ENQUEUE: |
7080 | case OFPACT_EXIT: | |
e672ff9b | 7081 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
7082 | case OFPACT_FIN_TIMEOUT: |
7083 | case OFPACT_GOTO_TABLE: | |
c2d936a4 | 7084 | case OFPACT_LEARN: |
18080541 | 7085 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7086 | case OFPACT_METER: |
7087 | case OFPACT_MULTIPATH: | |
7088 | case OFPACT_NOTE: | |
c2d936a4 | 7089 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7090 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 | 7091 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7092 | case OFPACT_SAMPLE: |
7093 | case OFPACT_STACK_POP: | |
7094 | case OFPACT_STACK_PUSH: | |
c2d936a4 BP |
7095 | case OFPACT_WRITE_ACTIONS: |
7096 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 7097 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7098 | case OFPACT_DEBUG_SLOW: |
39d4382e KS |
7099 | return ACTION_SLOT_INVALID; |
7100 | ||
c2d936a4 BP |
7101 | default: |
7102 | OVS_NOT_REACHED(); | |
7103 | } | |
7104 | } | |
7105 | ||
7106 | /* True if an action is allowed in the action set. | |
7107 | * False otherwise. */ | |
7108 | static bool | |
7109 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
7110 | { | |
39d4382e | 7111 | return action_set_classify(a) != ACTION_SLOT_INVALID; |
4cceacb9 JS |
7112 | } |
7113 | ||
c2d936a4 BP |
7114 | /* Reads 'action_set', which contains ofpacts accumulated by |
7115 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
7116 | * executed directly into 'action_list'. (These names correspond to the | |
7117 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
7118 | * | |
7119 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 7120 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
7121 | * specification. |
7122 | * | |
7123 | * Exceptions: | |
7124 | * + output action is only appended if no group action was present in 'in'. | |
7125 | * + As a simplification all set actions are copied in the order the are | |
7126 | * provided in 'in' as many set actions applied to a field has the same | |
7127 | * affect as only applying the last action that sets a field and | |
7128 | * duplicates are removed by do_xlate_actions(). | |
7129 | * This has an unwanted side-effect of compsoting multiple | |
7130 | * LOAD_REG actions that touch different regions of the same field. */ | |
7131 | void | |
7132 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
7133 | const struct ofpbuf *action_set) | |
f25d0cf3 | 7134 | { |
39d4382e KS |
7135 | const struct ofpact *slots[N_ACTION_SLOTS] = {NULL, }; |
7136 | ||
7137 | struct ofpbuf set_or_move; | |
7138 | ofpbuf_init(&set_or_move, 0); | |
7139 | ||
7140 | const struct ofpact *final_action = NULL; | |
7141 | enum action_set_class final_class = 0; | |
7142 | ||
7143 | const struct ofpact *cursor; | |
7144 | OFPACT_FOR_EACH (cursor, action_set->data, action_set->size) { | |
7145 | int class = action_set_classify(cursor); | |
7146 | if (class < N_ACTION_SLOTS) { | |
7147 | slots[class] = cursor; | |
7148 | } else if (class < ACTION_SLOT_SET_OR_MOVE) { | |
7149 | if (class >= final_class) { | |
7150 | final_action = cursor; | |
7151 | final_class = class; | |
7152 | } | |
7153 | } else if (class == ACTION_SLOT_SET_OR_MOVE) { | |
7154 | ofpact_copy(&set_or_move, cursor); | |
7155 | } else { | |
7156 | ovs_assert(class == ACTION_SLOT_INVALID); | |
7157 | } | |
7158 | } | |
7159 | ||
7160 | if (final_action) { | |
7161 | for (int i = 0; i < N_ACTION_SLOTS; i++) { | |
7162 | if (slots[i]) { | |
7163 | ofpact_copy(action_list, slots[i]); | |
7164 | } | |
7165 | } | |
7166 | ofpbuf_put(action_list, set_or_move.data, set_or_move.size); | |
7167 | ofpact_copy(action_list, final_action); | |
f25d0cf3 | 7168 | } |
39d4382e | 7169 | ofpbuf_uninit(&set_or_move); |
f25d0cf3 BP |
7170 | } |
7171 | ||
f25d0cf3 | 7172 | |
c2d936a4 BP |
7173 | static enum ofperr |
7174 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
7175 | size_t n_in, enum ofp_version version, | |
04f48a68 | 7176 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7177 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 | 7178 | struct ofpbuf *out) |
c2d967a5 | 7179 | { |
c2d936a4 BP |
7180 | enum ofperr error; |
7181 | struct ofpact *a; | |
6fd6ed71 | 7182 | size_t start = out->size; |
c2d967a5 | 7183 | |
5c7c16d8 YHW |
7184 | error = ofpacts_decode(in, n_in, version, vl_mff_map, ofpacts_tlv_bitmap, |
7185 | out); | |
c2d967a5 | 7186 | |
c2d936a4 BP |
7187 | if (error) { |
7188 | return error; | |
7189 | } | |
7190 | ||
6fd6ed71 | 7191 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
7192 | if (!ofpact_is_allowed_in_actions_set(a)) { |
7193 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
7194 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
7195 | } |
7196 | } | |
c2d936a4 BP |
7197 | |
7198 | return 0; | |
c2d967a5 | 7199 | } |
c2d936a4 BP |
7200 | \f |
7201 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 7202 | |
c2d936a4 BP |
7203 | struct instruction_type_info { |
7204 | enum ovs_instruction_type type; | |
7205 | const char *name; | |
7206 | }; | |
7207 | ||
7208 | static const struct instruction_type_info inst_info[] = { | |
7209 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
7210 | OVS_INSTRUCTIONS | |
7211 | #undef DEFINE_INST | |
7212 | }; | |
7213 | ||
7214 | const char * | |
7215 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 7216 | { |
3b048d73 | 7217 | return type < ARRAY_SIZE(inst_info) ? inst_info[type].name : NULL; |
f25d0cf3 BP |
7218 | } |
7219 | ||
c2d936a4 BP |
7220 | int |
7221 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 7222 | { |
c2d936a4 BP |
7223 | const struct instruction_type_info *p; |
7224 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
7225 | if (!strcasecmp(name, p->name)) { | |
7226 | return p->type; | |
7227 | } | |
7228 | } | |
7229 | return -1; | |
29089a54 RL |
7230 | } |
7231 | ||
c2d936a4 BP |
7232 | enum ovs_instruction_type |
7233 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 7234 | { |
c2d936a4 BP |
7235 | switch (type) { |
7236 | case OFPACT_METER: | |
7237 | return OVSINST_OFPIT13_METER; | |
7238 | case OFPACT_CLEAR_ACTIONS: | |
7239 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
7240 | case OFPACT_WRITE_ACTIONS: | |
7241 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
7242 | case OFPACT_WRITE_METADATA: | |
7243 | return OVSINST_OFPIT11_WRITE_METADATA; | |
7244 | case OFPACT_GOTO_TABLE: | |
7245 | return OVSINST_OFPIT11_GOTO_TABLE; | |
7246 | case OFPACT_OUTPUT: | |
7247 | case OFPACT_GROUP: | |
7ae62a67 | 7248 | case OFPACT_CLONE: |
f25d0cf3 | 7249 | case OFPACT_CONTROLLER: |
c2d936a4 | 7250 | case OFPACT_ENQUEUE: |
f25d0cf3 | 7251 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7252 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 7253 | case OFPACT_BUNDLE: |
c2d936a4 BP |
7254 | case OFPACT_SET_VLAN_VID: |
7255 | case OFPACT_SET_VLAN_PCP: | |
7256 | case OFPACT_STRIP_VLAN: | |
7257 | case OFPACT_PUSH_VLAN: | |
7258 | case OFPACT_SET_ETH_SRC: | |
7259 | case OFPACT_SET_ETH_DST: | |
7260 | case OFPACT_SET_IPV4_SRC: | |
7261 | case OFPACT_SET_IPV4_DST: | |
7262 | case OFPACT_SET_IP_DSCP: | |
7263 | case OFPACT_SET_IP_ECN: | |
7264 | case OFPACT_SET_IP_TTL: | |
7265 | case OFPACT_SET_L4_SRC_PORT: | |
7266 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 7267 | case OFPACT_REG_MOVE: |
c2d936a4 | 7268 | case OFPACT_SET_FIELD: |
bd85dac1 | 7269 | case OFPACT_STACK_PUSH: |
bd85dac1 | 7270 | case OFPACT_STACK_POP: |
f25d0cf3 | 7271 | case OFPACT_DEC_TTL: |
097d4939 | 7272 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 7273 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 7274 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7275 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
7276 | case OFPACT_PUSH_MPLS: |
7277 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 7278 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
7279 | case OFPACT_SET_QUEUE: |
7280 | case OFPACT_POP_QUEUE: | |
7281 | case OFPACT_FIN_TIMEOUT: | |
7282 | case OFPACT_RESUBMIT: | |
7283 | case OFPACT_LEARN: | |
18080541 | 7284 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7285 | case OFPACT_MULTIPATH: |
7286 | case OFPACT_NOTE: | |
7287 | case OFPACT_EXIT: | |
e672ff9b | 7288 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 7289 | case OFPACT_SAMPLE: |
d4abaff5 | 7290 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7291 | case OFPACT_DEBUG_SLOW: |
07659514 | 7292 | case OFPACT_CT: |
72fe7578 | 7293 | case OFPACT_CT_CLEAR: |
9ac0aada | 7294 | case OFPACT_NAT: |
f839892a JS |
7295 | case OFPACT_ENCAP: |
7296 | case OFPACT_DECAP: | |
491e05c2 | 7297 | case OFPACT_DEC_NSH_TTL: |
c2d936a4 BP |
7298 | default: |
7299 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
7300 | } | |
7301 | } | |
7302 | ||
7303 | enum ofperr | |
7304 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
7305 | const uint16_t inst_type) | |
7306 | { | |
7307 | switch (inst_type) { | |
7308 | ||
7309 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
7310 | case ENUM: \ | |
7311 | *instruction_type = OVSINST_##ENUM; \ | |
7312 | return 0; | |
7313 | OVS_INSTRUCTIONS | |
7314 | #undef DEFINE_INST | |
7315 | ||
7316 | default: | |
7317 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
7318 | } | |
7319 | } | |
7320 | ||
7321 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
7322 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
7323 | struct ovsinst_map { | |
7324 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
7325 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
7326 | }; | |
7327 | ||
7328 | static const struct ovsinst_map * | |
7329 | get_ovsinst_map(enum ofp_version version) | |
7330 | { | |
7331 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
7332 | static const struct ovsinst_map of11[] = { | |
7333 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7334 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7335 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7336 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7337 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7338 | { 0, -1 }, | |
7339 | }; | |
f25d0cf3 | 7340 | |
c2d936a4 BP |
7341 | /* OpenFlow 1.3+ instructions. */ |
7342 | static const struct ovsinst_map of13[] = { | |
7343 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7344 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7345 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7346 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7347 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7348 | { OVSINST_OFPIT13_METER, 6 }, | |
7349 | { 0, -1 }, | |
7350 | }; | |
4cceacb9 | 7351 | |
c2d936a4 BP |
7352 | return version < OFP13_VERSION ? of11 : of13; |
7353 | } | |
f25d0cf3 | 7354 | |
c2d936a4 BP |
7355 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
7356 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
7357 | * (OFP11_VERSION or later), and returns the result. */ | |
7358 | ovs_be32 | |
7359 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
7360 | { | |
7361 | uint32_t ofpit_bitmap = 0; | |
7362 | const struct ovsinst_map *x; | |
f25d0cf3 | 7363 | |
c2d936a4 BP |
7364 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7365 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
7366 | ofpit_bitmap |= 1u << x->ofpit; | |
7367 | } | |
7368 | } | |
7369 | return htonl(ofpit_bitmap); | |
7370 | } | |
f25d0cf3 | 7371 | |
c2d936a4 BP |
7372 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
7373 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
7374 | * correspond to OVSINST_* values, and returns the result. */ | |
7375 | uint32_t | |
7376 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
7377 | { | |
7378 | uint32_t ovsinst_bitmap = 0; | |
7379 | const struct ovsinst_map *x; | |
f25d0cf3 | 7380 | |
c2d936a4 BP |
7381 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7382 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
7383 | ovsinst_bitmap |= 1u << x->ovsinst; | |
7384 | } | |
7385 | } | |
7386 | return ovsinst_bitmap; | |
7387 | } | |
f25d0cf3 | 7388 | |
c2d936a4 BP |
7389 | static inline struct ofp11_instruction * |
7390 | instruction_next(const struct ofp11_instruction *inst) | |
7391 | { | |
7392 | return ((struct ofp11_instruction *) (void *) | |
7393 | ((uint8_t *) inst + ntohs(inst->len))); | |
7394 | } | |
f25d0cf3 | 7395 | |
c2d936a4 BP |
7396 | static inline bool |
7397 | instruction_is_valid(const struct ofp11_instruction *inst, | |
7398 | size_t n_instructions) | |
7399 | { | |
7400 | uint16_t len = ntohs(inst->len); | |
7401 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
7402 | && len >= sizeof *inst | |
7403 | && len / sizeof *inst <= n_instructions); | |
7404 | } | |
f25d0cf3 | 7405 | |
c2d936a4 BP |
7406 | /* This macro is careful to check for instructions with bad lengths. */ |
7407 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
7408 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
7409 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
7410 | ((LEFT) -= (ntohs((ITER)->len) \ | |
7411 | / sizeof(struct ofp11_instruction)), \ | |
7412 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 7413 | |
c2d936a4 BP |
7414 | static enum ofperr |
7415 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
7416 | enum ovs_instruction_type *type) | |
7417 | { | |
7418 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 7419 | |
c2d936a4 BP |
7420 | switch (inst->type) { |
7421 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
7422 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 7423 | |
c2d936a4 BP |
7424 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
7425 | case CONSTANT_HTONS(ENUM): \ | |
7426 | if (EXTENSIBLE \ | |
7427 | ? len >= sizeof(struct STRUCT) \ | |
7428 | : len == sizeof(struct STRUCT)) { \ | |
7429 | *type = OVSINST_##ENUM; \ | |
7430 | return 0; \ | |
7431 | } else { \ | |
7432 | return OFPERR_OFPBIC_BAD_LEN; \ | |
7433 | } | |
7434 | OVS_INSTRUCTIONS | |
7435 | #undef DEFINE_INST | |
29089a54 | 7436 | |
c2d936a4 BP |
7437 | default: |
7438 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
7439 | } |
7440 | } | |
f25d0cf3 | 7441 | |
c2d936a4 BP |
7442 | static enum ofperr |
7443 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
7444 | size_t n_insts, | |
7445 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 7446 | { |
c2d936a4 BP |
7447 | const struct ofp11_instruction *inst; |
7448 | size_t left; | |
f25d0cf3 | 7449 | |
c2d936a4 BP |
7450 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
7451 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
7452 | enum ovs_instruction_type type; | |
7453 | enum ofperr error; | |
f25d0cf3 | 7454 | |
c2d936a4 BP |
7455 | error = decode_openflow11_instruction(inst, &type); |
7456 | if (error) { | |
7457 | return error; | |
7458 | } | |
f25d0cf3 | 7459 | |
c2d936a4 BP |
7460 | if (out[type]) { |
7461 | return OFPERR_OFPBIC_DUP_INST; | |
7462 | } | |
7463 | out[type] = inst; | |
7464 | } | |
7465 | ||
7466 | if (left) { | |
7467 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
7468 | (n_insts - left) * sizeof *inst); | |
7469 | return OFPERR_OFPBIC_BAD_LEN; | |
7470 | } | |
7471 | return 0; | |
f25d0cf3 BP |
7472 | } |
7473 | ||
7474 | static void | |
c2d936a4 BP |
7475 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
7476 | const struct ofp_action_header **actions, | |
7477 | size_t *actions_len) | |
f25d0cf3 | 7478 | { |
c2d936a4 BP |
7479 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
7480 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
7481 | } | |
f25d0cf3 | 7482 | |
c2d936a4 BP |
7483 | enum ofperr |
7484 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
7485 | unsigned int instructions_len, | |
7486 | enum ofp_version version, | |
04f48a68 | 7487 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7488 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
7489 | struct ofpbuf *ofpacts) |
7490 | { | |
7491 | const struct ofp11_instruction *instructions; | |
7492 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
7493 | enum ofperr error; | |
f25d0cf3 | 7494 | |
9abca1e5 | 7495 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
7496 | if (version == OFP10_VERSION) { |
7497 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
7498 | version, | |
7499 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
5c7c16d8 YHW |
7500 | ofpacts, 0, vl_mff_map, |
7501 | ofpacts_tlv_bitmap); | |
c2d936a4 | 7502 | } |
f25d0cf3 | 7503 | |
c2d936a4 BP |
7504 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
7505 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
7506 | "multiple of %d", | |
7507 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
7508 | error = OFPERR_OFPBIC_BAD_LEN; | |
7509 | goto exit; | |
7510 | } | |
f25d0cf3 | 7511 | |
c2d936a4 BP |
7512 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
7513 | if (instructions == NULL) { | |
7514 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
7515 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 7516 | instructions_len, openflow->size); |
c2d936a4 BP |
7517 | error = OFPERR_OFPBIC_BAD_LEN; |
7518 | goto exit; | |
7519 | } | |
f25d0cf3 | 7520 | |
c2d936a4 BP |
7521 | error = decode_openflow11_instructions( |
7522 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
7523 | insts); | |
7524 | if (error) { | |
7525 | goto exit; | |
7526 | } | |
f25d0cf3 | 7527 | |
c2d936a4 BP |
7528 | if (insts[OVSINST_OFPIT13_METER]) { |
7529 | const struct ofp13_instruction_meter *oim; | |
7530 | struct ofpact_meter *om; | |
f25d0cf3 | 7531 | |
c2d936a4 BP |
7532 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
7533 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 7534 | |
c2d936a4 BP |
7535 | om = ofpact_put_METER(ofpacts); |
7536 | om->meter_id = ntohl(oim->meter_id); | |
076caa2f | 7537 | om->provider_meter_id = UINT32_MAX; /* No provider meter ID. */ |
c2d936a4 BP |
7538 | } |
7539 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
7540 | const struct ofp_action_header *actions; | |
7541 | size_t actions_len; | |
f25d0cf3 | 7542 | |
c2d936a4 BP |
7543 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
7544 | &actions, &actions_len); | |
04f48a68 | 7545 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
5c7c16d8 | 7546 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
7547 | if (error) { |
7548 | goto exit; | |
7549 | } | |
7550 | } | |
7551 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
7552 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
7553 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
7554 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
7555 | } | |
7556 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
7557 | struct ofpact_nest *on; | |
7558 | const struct ofp_action_header *actions; | |
7559 | size_t actions_len; | |
2bd318de | 7560 | size_t start = ofpacts->size; |
255a54ea BP |
7561 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
7562 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
7563 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
7564 | &actions, &actions_len); | |
7565 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
5c7c16d8 YHW |
7566 | version, vl_mff_map, |
7567 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 BP |
7568 | if (error) { |
7569 | goto exit; | |
7570 | } | |
7571 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 7572 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
7573 | } |
7574 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
7575 | const struct ofp11_instruction_write_metadata *oiwm; | |
7576 | struct ofpact_metadata *om; | |
ca287d20 | 7577 | |
c2d936a4 BP |
7578 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
7579 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 7580 | |
c2d936a4 BP |
7581 | om = ofpact_put_WRITE_METADATA(ofpacts); |
7582 | om->metadata = oiwm->metadata; | |
7583 | om->mask = oiwm->metadata_mask; | |
7584 | } | |
7585 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
7586 | const struct ofp11_instruction_goto_table *oigt; | |
7587 | struct ofpact_goto_table *ogt; | |
7395c052 | 7588 | |
c2d936a4 BP |
7589 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
7590 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
7591 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
7592 | ogt->table_id = oigt->table_id; | |
7593 | } | |
e3f8f887 | 7594 | |
6fd6ed71 | 7595 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 7596 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
7597 | exit: |
7598 | if (error) { | |
7599 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 7600 | } |
c2d936a4 | 7601 | return error; |
f25d0cf3 | 7602 | } |
d01c980f | 7603 | |
c2d936a4 BP |
7604 | /* Update the length of the instruction that begins at offset 'ofs' within |
7605 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
7606 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 7607 | static void |
c2d936a4 | 7608 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 7609 | { |
c2d936a4 | 7610 | struct ofp11_instruction_actions *oia; |
d01c980f | 7611 | |
c2d936a4 | 7612 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
7613 | if (openflow->size > ofs + sizeof *oia) { |
7614 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 7615 | } else { |
6fd6ed71 | 7616 | openflow->size = ofs; |
c2d936a4 | 7617 | } |
d01c980f | 7618 | } |
c2d936a4 BP |
7619 | \f |
7620 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
7621 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
7622 | * valid, otherwise an OpenFlow error code. */ | |
7623 | enum ofperr | |
7624 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 7625 | { |
c2d936a4 BP |
7626 | switch (port) { |
7627 | case OFPP_IN_PORT: | |
7628 | case OFPP_TABLE: | |
7629 | case OFPP_NORMAL: | |
7630 | case OFPP_FLOOD: | |
7631 | case OFPP_ALL: | |
7632 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
7633 | case OFPP_LOCAL: |
7634 | return 0; | |
7635 | ||
13d2c689 BP |
7636 | case OFPP_NONE: |
7637 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7638 | ||
c2d936a4 BP |
7639 | default: |
7640 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
7641 | return 0; | |
7642 | } | |
7643 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
7644 | } |
7645 | } | |
7646 | ||
c2d936a4 BP |
7647 | /* Removes the protocols that require consistency between match and actions |
7648 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
7649 | * | |
7650 | * (An example of an inconsistency between match and actions is a flow that | |
7651 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
7652 | * label.) */ | |
d01c980f | 7653 | static void |
c2d936a4 BP |
7654 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
7655 | { | |
7656 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
7657 | } | |
7658 | ||
f839892a JS |
7659 | /* May modify flow->packet_type, flow->dl_type, flow->nw_proto and |
7660 | * flow->vlan_tci, caller must restore them. | |
c2d936a4 BP |
7661 | * |
7662 | * Modifies some actions, filling in fields that could not be properly set | |
7663 | * without context. */ | |
7664 | static enum ofperr | |
7665 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, | |
67210a55 | 7666 | struct match *match, ofp_port_t max_ports, |
c2d936a4 | 7667 | uint8_t table_id, uint8_t n_tables) |
d01c980f | 7668 | { |
67210a55 | 7669 | struct flow *flow = &match->flow; |
c2d936a4 BP |
7670 | const struct ofpact_enqueue *enqueue; |
7671 | const struct mf_field *mf; | |
f839892a | 7672 | ovs_be16 dl_type = get_dl_type(flow); |
c2d936a4 | 7673 | |
d01c980f BP |
7674 | switch (a->type) { |
7675 | case OFPACT_OUTPUT: | |
c2d936a4 BP |
7676 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
7677 | max_ports); | |
7678 | ||
7679 | case OFPACT_CONTROLLER: | |
7680 | return 0; | |
d01c980f BP |
7681 | |
7682 | case OFPACT_ENQUEUE: | |
c2d936a4 BP |
7683 | enqueue = ofpact_get_ENQUEUE(a); |
7684 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) | |
7685 | && enqueue->port != OFPP_IN_PORT | |
7686 | && enqueue->port != OFPP_LOCAL) { | |
7687 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7688 | } | |
7689 | return 0; | |
7690 | ||
7691 | case OFPACT_OUTPUT_REG: | |
67210a55 | 7692 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, match); |
c2d936a4 | 7693 | |
aaca4fe0 WT |
7694 | case OFPACT_OUTPUT_TRUNC: |
7695 | return ofpact_check_output_port(ofpact_get_OUTPUT_TRUNC(a)->port, | |
7696 | max_ports); | |
7697 | ||
c2d936a4 | 7698 | case OFPACT_BUNDLE: |
67210a55 | 7699 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, match); |
d01c980f BP |
7700 | |
7701 | case OFPACT_SET_VLAN_VID: | |
c2d936a4 BP |
7702 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7703 | * OpenFlow 1.1+ if need be. */ | |
7704 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
f0fb825a EG |
7705 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
7706 | if (!(flow->vlans[0].tci & htons(VLAN_CFI)) && | |
c2d936a4 BP |
7707 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { |
7708 | inconsistent_match(usable_protocols); | |
7709 | } | |
7710 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a | 7711 | flow->vlans[0].tci |= htons(VLAN_CFI); |
c2d936a4 | 7712 | return 0; |
d01c980f BP |
7713 | |
7714 | case OFPACT_SET_VLAN_PCP: | |
c2d936a4 BP |
7715 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7716 | * OpenFlow 1.1+ if need be. */ | |
7717 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
f0fb825a EG |
7718 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
7719 | if (!(flow->vlans[0].tci & htons(VLAN_CFI)) && | |
c2d936a4 BP |
7720 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { |
7721 | inconsistent_match(usable_protocols); | |
7722 | } | |
7723 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a | 7724 | flow->vlans[0].tci |= htons(VLAN_CFI); |
c2d936a4 | 7725 | return 0; |
d01c980f BP |
7726 | |
7727 | case OFPACT_STRIP_VLAN: | |
f0fb825a | 7728 | if (!(flow->vlans[0].tci & htons(VLAN_CFI))) { |
c2d936a4 BP |
7729 | inconsistent_match(usable_protocols); |
7730 | } | |
f0fb825a | 7731 | flow_pop_vlan(flow, NULL); |
c2d936a4 | 7732 | return 0; |
d01c980f | 7733 | |
3e34fbdd | 7734 | case OFPACT_PUSH_VLAN: |
f0fb825a EG |
7735 | if (flow->vlans[FLOW_MAX_VLAN_HEADERS - 1].tci & htons(VLAN_CFI)) { |
7736 | /* Support maximum (FLOW_MAX_VLAN_HEADERS) VLAN headers. */ | |
c2d936a4 BP |
7737 | return OFPERR_OFPBAC_BAD_TAG; |
7738 | } | |
7739 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a EG |
7740 | flow_push_vlan_uninit(flow, NULL); |
7741 | flow->vlans[0].tci |= htons(VLAN_CFI); | |
c2d936a4 | 7742 | return 0; |
276c4e7a | 7743 | |
d01c980f | 7744 | case OFPACT_SET_ETH_SRC: |
d01c980f | 7745 | case OFPACT_SET_ETH_DST: |
c2d936a4 | 7746 | return 0; |
d01c980f BP |
7747 | |
7748 | case OFPACT_SET_IPV4_SRC: | |
d01c980f | 7749 | case OFPACT_SET_IPV4_DST: |
f839892a | 7750 | if (dl_type != htons(ETH_TYPE_IP)) { |
c2d936a4 BP |
7751 | inconsistent_match(usable_protocols); |
7752 | } | |
7753 | return 0; | |
d01c980f | 7754 | |
04f01c24 | 7755 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7756 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7757 | case OFPACT_SET_IP_TTL: |
7bcb1506 | 7758 | case OFPACT_DEC_TTL: |
c2d936a4 BP |
7759 | if (!is_ip_any(flow)) { |
7760 | inconsistent_match(usable_protocols); | |
7761 | } | |
7762 | return 0; | |
b02475c5 | 7763 | |
c2d936a4 | 7764 | case OFPACT_SET_L4_SRC_PORT: |
c2d936a4 | 7765 | case OFPACT_SET_L4_DST_PORT: |
b8778a0d | 7766 | if (!is_ip_any(flow) || (flow->nw_frag & FLOW_NW_FRAG_LATER) || |
c2d936a4 BP |
7767 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP |
7768 | && flow->nw_proto != IPPROTO_SCTP)) { | |
7769 | inconsistent_match(usable_protocols); | |
7770 | } | |
7771 | /* Note on which transport protocol the port numbers are set. | |
7772 | * This allows this set action to be converted to an OF1.2 set field | |
7773 | * action. */ | |
b8778a0d JR |
7774 | if (a->type == OFPACT_SET_L4_SRC_PORT) { |
7775 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7776 | } else { | |
7777 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7778 | } | |
c2d936a4 | 7779 | return 0; |
b02475c5 | 7780 | |
c2d936a4 | 7781 | case OFPACT_REG_MOVE: |
67210a55 | 7782 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), match); |
8dd54666 | 7783 | |
e3f8f887 | 7784 | case OFPACT_SET_FIELD: |
c2d936a4 BP |
7785 | mf = ofpact_get_SET_FIELD(a)->field; |
7786 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
aff49b8c | 7787 | if (!mf_are_prereqs_ok(mf, flow, NULL) || |
f0fb825a EG |
7788 | (mf->id == MFF_VLAN_VID && |
7789 | !(flow->vlans[0].tci & htons(VLAN_CFI)))) { | |
5bcd4754 | 7790 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisites", |
c2d936a4 BP |
7791 | mf->name); |
7792 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7793 | } | |
7794 | /* Remember if we saw a vlan tag in the flow to aid translating to | |
7795 | * OpenFlow 1.1 if need be. */ | |
7796 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
f0fb825a | 7797 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
c2d936a4 BP |
7798 | if (mf->id == MFF_VLAN_TCI) { |
7799 | /* The set field may add or remove the vlan tag, | |
7800 | * Mark the status temporarily. */ | |
f0fb825a | 7801 | flow->vlans[0].tci = ofpact_get_SET_FIELD(a)->value->be16; |
c2d936a4 BP |
7802 | } |
7803 | return 0; | |
e3f8f887 | 7804 | |
bd85dac1 | 7805 | case OFPACT_STACK_PUSH: |
67210a55 | 7806 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), match); |
c2d936a4 | 7807 | |
bd85dac1 | 7808 | case OFPACT_STACK_POP: |
67210a55 | 7809 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), match); |
c2d936a4 BP |
7810 | |
7811 | case OFPACT_SET_MPLS_LABEL: | |
7812 | case OFPACT_SET_MPLS_TC: | |
7813 | case OFPACT_SET_MPLS_TTL: | |
7814 | case OFPACT_DEC_MPLS_TTL: | |
f839892a | 7815 | if (!eth_type_mpls(dl_type)) { |
c2d936a4 BP |
7816 | inconsistent_match(usable_protocols); |
7817 | } | |
7818 | return 0; | |
7819 | ||
d01c980f | 7820 | case OFPACT_SET_TUNNEL: |
c2d936a4 | 7821 | case OFPACT_SET_QUEUE: |
d01c980f | 7822 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7823 | return 0; |
7824 | ||
2cd20955 JR |
7825 | case OFPACT_RESUBMIT: { |
7826 | struct ofpact_resubmit *resubmit = ofpact_get_RESUBMIT(a); | |
7827 | ||
7828 | if (resubmit->with_ct_orig && !is_ct_valid(flow, &match->wc, NULL)) { | |
7829 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7830 | } | |
7831 | return 0; | |
7832 | } | |
c2d936a4 BP |
7833 | case OFPACT_FIN_TIMEOUT: |
7834 | if (flow->nw_proto != IPPROTO_TCP) { | |
7835 | inconsistent_match(usable_protocols); | |
7836 | } | |
7837 | return 0; | |
7838 | ||
d01c980f | 7839 | case OFPACT_LEARN: |
67210a55 | 7840 | return learn_check(ofpact_get_LEARN(a), match); |
c2d936a4 | 7841 | |
18080541 BP |
7842 | case OFPACT_CONJUNCTION: |
7843 | return 0; | |
7844 | ||
d01c980f | 7845 | case OFPACT_MULTIPATH: |
67210a55 | 7846 | return multipath_check(ofpact_get_MULTIPATH(a), match); |
c2d936a4 | 7847 | |
d01c980f BP |
7848 | case OFPACT_NOTE: |
7849 | case OFPACT_EXIT: | |
c2d936a4 | 7850 | return 0; |
d01c980f | 7851 | |
c2d936a4 | 7852 | case OFPACT_PUSH_MPLS: |
f839892a JS |
7853 | if (flow->packet_type != htonl(PT_ETH)) { |
7854 | inconsistent_match(usable_protocols); | |
7855 | } | |
c2d936a4 BP |
7856 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; |
7857 | /* The packet is now MPLS and the MPLS payload is opaque. | |
7858 | * Thus nothing can be assumed about the network protocol. | |
7859 | * Temporarily mark that we have no nw_proto. */ | |
7860 | flow->nw_proto = 0; | |
7861 | return 0; | |
1e7db674 | 7862 | |
c2d936a4 | 7863 | case OFPACT_POP_MPLS: |
f839892a JS |
7864 | if (flow->packet_type != htonl(PT_ETH) |
7865 | || !eth_type_mpls(dl_type)) { | |
c2d936a4 BP |
7866 | inconsistent_match(usable_protocols); |
7867 | } | |
7868 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
7869 | return 0; | |
1e7db674 | 7870 | |
c2d936a4 BP |
7871 | case OFPACT_SAMPLE: |
7872 | return 0; | |
1e7db674 | 7873 | |
7ae62a67 WT |
7874 | case OFPACT_CLONE: { |
7875 | struct ofpact_nest *on = ofpact_get_CLONE(a); | |
7876 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
67210a55 | 7877 | match, max_ports, table_id, n_tables, |
7ae62a67 WT |
7878 | usable_protocols); |
7879 | } | |
7880 | ||
07659514 JS |
7881 | case OFPACT_CT: { |
7882 | struct ofpact_conntrack *oc = ofpact_get_CT(a); | |
7883 | ||
f839892a | 7884 | if (!dl_type_is_ip_any(dl_type) |
8b6d097c | 7885 | || (flow->ct_state & CS_INVALID && oc->flags & NX_CT_F_COMMIT) |
40c7b2fc JS |
7886 | || (oc->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) |
7887 | || (oc->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
ed26e3ea JR |
7888 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions |
7889 | * be silently discarded. Instead, datapath flow install fails, so | |
7890 | * it is better to flag inconsistent CT actions as hard errors. */ | |
7891 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
07659514 JS |
7892 | } |
7893 | ||
7894 | if (oc->zone_src.field) { | |
67210a55 | 7895 | return mf_check_src(&oc->zone_src, match); |
07659514 | 7896 | } |
8e53fe8c | 7897 | |
9f02d70c | 7898 | return ofpacts_check(oc->actions, ofpact_ct_get_action_len(oc), |
67210a55 | 7899 | match, max_ports, table_id, n_tables, |
9f02d70c | 7900 | usable_protocols); |
07659514 JS |
7901 | } |
7902 | ||
72fe7578 BP |
7903 | case OFPACT_CT_CLEAR: |
7904 | return 0; | |
7905 | ||
9ac0aada JR |
7906 | case OFPACT_NAT: { |
7907 | struct ofpact_nat *on = ofpact_get_NAT(a); | |
7908 | ||
f839892a JS |
7909 | if (!dl_type_is_ip_any(dl_type) || |
7910 | (on->range_af == AF_INET && dl_type != htons(ETH_TYPE_IP)) || | |
9ac0aada | 7911 | (on->range_af == AF_INET6 |
f839892a | 7912 | && dl_type != htons(ETH_TYPE_IPV6))) { |
ed26e3ea | 7913 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
9ac0aada JR |
7914 | } |
7915 | return 0; | |
7916 | } | |
7917 | ||
c2d936a4 BP |
7918 | case OFPACT_CLEAR_ACTIONS: |
7919 | return 0; | |
1e7db674 | 7920 | |
c2d936a4 BP |
7921 | case OFPACT_WRITE_ACTIONS: { |
7922 | /* Use a temporary copy of 'usable_protocols' because we can't check | |
7923 | * consistency of an action set. */ | |
7924 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
7925 | enum ofputil_protocol p = *usable_protocols; | |
7926 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
67210a55 | 7927 | match, max_ports, table_id, n_tables, &p); |
c2d936a4 | 7928 | } |
1e7db674 | 7929 | |
c2d936a4 BP |
7930 | case OFPACT_WRITE_METADATA: |
7931 | return 0; | |
1e7db674 | 7932 | |
c2d936a4 BP |
7933 | case OFPACT_METER: { |
7934 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
7935 | if (mid == 0 || mid > OFPM13_MAX) { | |
7936 | return OFPERR_OFPMMFC_INVALID_METER; | |
7937 | } | |
7938 | return 0; | |
7939 | } | |
1e7db674 | 7940 | |
c2d936a4 BP |
7941 | case OFPACT_GOTO_TABLE: { |
7942 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
7943 | if ((table_id != 255 && goto_table <= table_id) | |
7944 | || (n_tables != 255 && goto_table >= n_tables)) { | |
8c87971e | 7945 | return OFPERR_OFPBIC_BAD_TABLE_ID; |
c2d936a4 BP |
7946 | } |
7947 | return 0; | |
7948 | } | |
1e7db674 | 7949 | |
c2d936a4 BP |
7950 | case OFPACT_GROUP: |
7951 | return 0; | |
1e7db674 | 7952 | |
e672ff9b JR |
7953 | case OFPACT_UNROLL_XLATE: |
7954 | /* UNROLL is an internal action that should never be seen via | |
7955 | * OpenFlow. */ | |
7956 | return OFPERR_OFPBAC_BAD_TYPE; | |
7957 | ||
d4abaff5 | 7958 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7959 | case OFPACT_DEBUG_SLOW: |
d4abaff5 BP |
7960 | return 0; |
7961 | ||
f839892a JS |
7962 | case OFPACT_ENCAP: |
7963 | flow->packet_type = ofpact_get_ENCAP(a)->new_pkt_type; | |
7964 | if (pt_ns(flow->packet_type) == OFPHTN_ETHERTYPE) { | |
7965 | flow->dl_type = htons(pt_ns_type(flow->packet_type)); | |
7966 | } | |
7967 | if (!is_ip_any(flow)) { | |
7968 | flow->nw_proto = 0; | |
7969 | } | |
7970 | return 0; | |
7971 | ||
7972 | case OFPACT_DECAP: | |
7973 | if (flow->packet_type == htonl(PT_ETH)) { | |
7974 | /* Adjust the packet_type to allow subsequent actions. */ | |
7975 | flow->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
7976 | ntohs(flow->dl_type)); | |
7977 | } else { | |
7978 | /* The actual packet_type is only known after decapsulation. | |
7979 | * Do not allow subsequent actions that depend on packet headers. */ | |
7980 | flow->packet_type = htonl(PT_UNKNOWN); | |
7981 | flow->dl_type = OVS_BE16_MAX; | |
7982 | } | |
7983 | return 0; | |
7984 | ||
491e05c2 YY |
7985 | case OFPACT_DEC_NSH_TTL: |
7986 | if ((flow->packet_type != htonl(PT_NSH)) && | |
7987 | (flow->dl_type != htons(ETH_TYPE_NSH))) { | |
7988 | inconsistent_match(usable_protocols); | |
7989 | } | |
7990 | return 0; | |
7991 | ||
c2d936a4 BP |
7992 | default: |
7993 | OVS_NOT_REACHED(); | |
7994 | } | |
7995 | } | |
1e7db674 | 7996 | |
c2d936a4 BP |
7997 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
7998 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
7999 | * switch with no more than 'max_ports' ports. | |
8000 | * | |
8001 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
8002 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
8003 | * example of an inconsistency between match and actions is a flow that does | |
8004 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
8005 | * | |
67210a55 | 8006 | * May annotate ofpacts with information gathered from the 'match'. |
c2d936a4 | 8007 | * |
67210a55 JR |
8008 | * May temporarily modify 'match', but restores the changes before |
8009 | * returning. */ | |
c2d936a4 BP |
8010 | enum ofperr |
8011 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
67210a55 | 8012 | struct match *match, ofp_port_t max_ports, |
c2d936a4 BP |
8013 | uint8_t table_id, uint8_t n_tables, |
8014 | enum ofputil_protocol *usable_protocols) | |
8015 | { | |
8016 | struct ofpact *a; | |
f839892a | 8017 | ovs_be32 packet_type = match->flow.packet_type; |
67210a55 | 8018 | ovs_be16 dl_type = match->flow.dl_type; |
67210a55 | 8019 | uint8_t nw_proto = match->flow.nw_proto; |
c2d936a4 | 8020 | enum ofperr error = 0; |
f0fb825a EG |
8021 | union flow_vlan_hdr vlans[FLOW_MAX_VLAN_HEADERS]; |
8022 | ||
8023 | memcpy(&vlans, &match->flow.vlans, sizeof(vlans)); | |
1e7db674 | 8024 | |
c2d936a4 | 8025 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
67210a55 | 8026 | error = ofpact_check__(usable_protocols, a, match, |
c2d936a4 BP |
8027 | max_ports, table_id, n_tables); |
8028 | if (error) { | |
1e7db674 | 8029 | break; |
c2d936a4 BP |
8030 | } |
8031 | } | |
8032 | /* Restore fields that may have been modified. */ | |
f839892a | 8033 | match->flow.packet_type = packet_type; |
67210a55 | 8034 | match->flow.dl_type = dl_type; |
f0fb825a | 8035 | memcpy(&match->flow.vlans, &vlans, sizeof(vlans)); |
67210a55 | 8036 | match->flow.nw_proto = nw_proto; |
c2d936a4 BP |
8037 | return error; |
8038 | } | |
1e7db674 | 8039 | |
c2d936a4 BP |
8040 | /* Like ofpacts_check(), but reports inconsistencies as |
8041 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
8042 | enum ofperr | |
8043 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
67210a55 | 8044 | struct match *match, ofp_port_t max_ports, |
c2d936a4 BP |
8045 | uint8_t table_id, uint8_t n_tables, |
8046 | enum ofputil_protocol usable_protocols) | |
8047 | { | |
8048 | enum ofputil_protocol p = usable_protocols; | |
8049 | enum ofperr error; | |
1e7db674 | 8050 | |
67210a55 | 8051 | error = ofpacts_check(ofpacts, ofpacts_len, match, max_ports, |
c2d936a4 BP |
8052 | table_id, n_tables, &p); |
8053 | return (error ? error | |
8054 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
8055 | : 0); | |
8056 | } | |
097d4939 | 8057 | |
28f5311f JS |
8058 | /* Returns the destination field that 'ofpact' would write to, or NULL |
8059 | * if the action would not write to an mf_field. */ | |
8060 | const struct mf_field * | |
8061 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 8062 | { |
28f5311f JS |
8063 | if (ofpact->type == OFPACT_SET_FIELD) { |
8064 | const struct ofpact_set_field *orl; | |
8e53fe8c | 8065 | |
28f5311f | 8066 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 8067 | return orl->field; |
28f5311f JS |
8068 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
8069 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 8070 | |
28f5311f | 8071 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
8072 | return orm->dst.field; |
8073 | } | |
8074 | ||
8075 | return NULL; | |
8076 | } | |
8077 | ||
8078 | static enum ofperr | |
8079 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
8080 | { | |
8081 | VLOG_WARN("%s action doesn't support nested action %s", | |
8082 | ofpact_name(outer_action), ofpact_name(action)); | |
8083 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8084 | } | |
8085 | ||
8086 | static bool | |
8087 | field_requires_ct(enum mf_field_id field) | |
8088 | { | |
9daf2348 | 8089 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
8090 | } |
8091 | ||
8092 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
8093 | static enum ofperr |
8094 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
8095 | { | |
28f5311f | 8096 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
8097 | |
8098 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
8099 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
8100 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8101 | } | |
9ac0aada JR |
8102 | if (a->type == OFPACT_NAT) { |
8103 | if (outer_action != OFPACT_CT) { | |
8104 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
8105 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8106 | } | |
8107 | return 0; | |
8108 | } | |
8e53fe8c JS |
8109 | |
8110 | if (outer_action) { | |
8111 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
8112 | || outer_action == OFPACT_CT); | |
8113 | ||
8114 | if (outer_action == OFPACT_CT) { | |
8115 | if (!field) { | |
8116 | return unsupported_nesting(a->type, outer_action); | |
8117 | } else if (!field_requires_ct(field->id)) { | |
8118 | VLOG_WARN("%s action doesn't support nested modification " | |
8119 | "of %s", ofpact_name(outer_action), field->name); | |
8120 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8121 | } | |
8122 | } | |
d824b5b7 JS |
8123 | } |
8124 | ||
8125 | return 0; | |
8126 | } | |
8127 | ||
18080541 BP |
8128 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
8129 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
8130 | * vSwitch. | |
8131 | * | |
8132 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
8133 | * instructions that are allowed within 'ofpacts[]'. |
8134 | * | |
8135 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
8136 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
8137 | static enum ofperr |
8138 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 8139 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
8140 | { |
8141 | const struct ofpact *a; | |
8142 | enum ovs_instruction_type inst; | |
097d4939 | 8143 | |
c2d936a4 BP |
8144 | inst = OVSINST_OFPIT13_METER; |
8145 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8146 | enum ovs_instruction_type next; | |
8e53fe8c | 8147 | enum ofperr error; |
1e7db674 | 8148 | |
18080541 BP |
8149 | if (a->type == OFPACT_CONJUNCTION) { |
8150 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
8151 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
8152 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
8153 | "\"note\" but not any other kind of action " | |
8154 | "(such as the \"%s\" action used here)", | |
96775a1c | 8155 | ofpact_name(a->type)); |
18080541 BP |
8156 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
8157 | } | |
8158 | } | |
8159 | return 0; | |
8160 | } | |
8161 | ||
8e53fe8c JS |
8162 | error = ofpacts_verify_nested(a, outer_action); |
8163 | if (error) { | |
8164 | return error; | |
d824b5b7 JS |
8165 | } |
8166 | ||
c2d936a4 BP |
8167 | next = ovs_instruction_type_from_ofpact_type(a->type); |
8168 | if (a > ofpacts | |
8169 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
8170 | ? next < inst | |
8171 | : next <= inst)) { | |
8172 | const char *name = ovs_instruction_name_from_type(inst); | |
8173 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8174 | |
c2d936a4 BP |
8175 | if (next == inst) { |
8176 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
8177 | "1.1+ compatibility", name); | |
8178 | } else { | |
8179 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
8180 | "before %s, for OpenFlow 1.1+ compatibility", | |
8181 | next_name, name); | |
8182 | } | |
8183 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
8184 | } | |
8185 | if (!((1u << next) & allowed_ovsinsts)) { | |
8186 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8187 | |
c2d936a4 BP |
8188 | VLOG_WARN("%s instruction not allowed here", name); |
8189 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 8190 | } |
c2d936a4 BP |
8191 | |
8192 | inst = next; | |
8193 | } | |
8194 | ||
8195 | return 0; | |
8196 | } | |
8197 | \f | |
8198 | /* Converting ofpacts to OpenFlow. */ | |
8199 | ||
8200 | static void | |
8201 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
8202 | struct ofpbuf *out) | |
8203 | { | |
8204 | switch (a->type) { | |
8205 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8206 | case OFPACT_##ENUM: \ | |
355ead69 GS |
8207 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
8208 | return; | |
c2d936a4 BP |
8209 | OFPACTS |
8210 | #undef OFPACT | |
8211 | default: | |
8212 | OVS_NOT_REACHED(); | |
1e7db674 | 8213 | } |
e3f8f887 JR |
8214 | } |
8215 | ||
8216 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
8217 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 8218 | * 'openflow'. */ |
a07c15bc | 8219 | size_t |
e3f8f887 JR |
8220 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
8221 | struct ofpbuf *openflow, | |
8222 | enum ofp_version ofp_version) | |
d01c980f BP |
8223 | { |
8224 | const struct ofpact *a; | |
6fd6ed71 | 8225 | size_t start_size = openflow->size; |
d01c980f BP |
8226 | |
8227 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 8228 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 8229 | } |
6fd6ed71 | 8230 | return openflow->size - start_size; |
d01c980f BP |
8231 | } |
8232 | ||
c2d936a4 BP |
8233 | static enum ovs_instruction_type |
8234 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 8235 | { |
c2d936a4 BP |
8236 | return (ovs_instruction_type_from_ofpact_type(a->type) |
8237 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 8238 | } |
8dd54666 IY |
8239 | |
8240 | void | |
e3f8f887 JR |
8241 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
8242 | size_t ofpacts_len, | |
8243 | struct ofpbuf *openflow, | |
8244 | enum ofp_version ofp_version) | |
8dd54666 | 8245 | { |
c2d936a4 | 8246 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
8247 | const struct ofpact *a; |
8248 | ||
8f2cded4 BP |
8249 | if (ofp_version == OFP10_VERSION) { |
8250 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
8251 | ofp_version); | |
8252 | return; | |
8253 | } | |
e3f8f887 | 8254 | |
c2d936a4 BP |
8255 | a = ofpacts; |
8256 | while (a < end) { | |
8257 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 8258 | size_t ofs = openflow->size; |
8dd54666 IY |
8259 | |
8260 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
8261 | do { |
8262 | encode_ofpact(a, ofp_version, openflow); | |
8263 | a = ofpact_next(a); | |
8264 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 8265 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
8266 | } else { |
8267 | encode_ofpact(a, ofp_version, openflow); | |
8268 | a = ofpact_next(a); | |
8dd54666 IY |
8269 | } |
8270 | } | |
8271 | } | |
d01c980f | 8272 | \f |
08d1e234 BP |
8273 | /* Sets of supported actions. */ |
8274 | ||
8275 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
8276 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
8277 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
8278 | * instance is specific to one OpenFlow version.) */ | |
8279 | struct ofpact_map { | |
8280 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
8281 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
8282 | }; | |
8283 | ||
8284 | static const struct ofpact_map * | |
8285 | get_ofpact_map(enum ofp_version version) | |
8286 | { | |
8287 | /* OpenFlow 1.0 actions. */ | |
8288 | static const struct ofpact_map of10[] = { | |
8289 | { OFPACT_OUTPUT, 0 }, | |
8290 | { OFPACT_SET_VLAN_VID, 1 }, | |
8291 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8292 | { OFPACT_STRIP_VLAN, 3 }, | |
8293 | { OFPACT_SET_ETH_SRC, 4 }, | |
8294 | { OFPACT_SET_ETH_DST, 5 }, | |
8295 | { OFPACT_SET_IPV4_SRC, 6 }, | |
8296 | { OFPACT_SET_IPV4_DST, 7 }, | |
8297 | { OFPACT_SET_IP_DSCP, 8 }, | |
8298 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8299 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8300 | { OFPACT_ENQUEUE, 11 }, | |
8301 | { 0, -1 }, | |
8302 | }; | |
8303 | ||
8304 | /* OpenFlow 1.1 actions. */ | |
8305 | static const struct ofpact_map of11[] = { | |
8306 | { OFPACT_OUTPUT, 0 }, | |
8307 | { OFPACT_SET_VLAN_VID, 1 }, | |
8308 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8309 | { OFPACT_SET_ETH_SRC, 3 }, | |
8310 | { OFPACT_SET_ETH_DST, 4 }, | |
8311 | { OFPACT_SET_IPV4_SRC, 5 }, | |
8312 | { OFPACT_SET_IPV4_DST, 6 }, | |
8313 | { OFPACT_SET_IP_DSCP, 7 }, | |
8314 | { OFPACT_SET_IP_ECN, 8 }, | |
8315 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8316 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8317 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8318 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8319 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
8320 | { OFPACT_SET_MPLS_TC, 14 }, | |
8321 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8322 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8323 | { OFPACT_PUSH_VLAN, 17 }, | |
8324 | { OFPACT_STRIP_VLAN, 18 }, | |
8325 | { OFPACT_PUSH_MPLS, 19 }, | |
8326 | { OFPACT_POP_MPLS, 20 }, | |
8327 | { OFPACT_SET_QUEUE, 21 }, | |
8328 | { OFPACT_GROUP, 22 }, | |
8329 | { OFPACT_SET_IP_TTL, 23 }, | |
8330 | { OFPACT_DEC_TTL, 24 }, | |
8331 | { 0, -1 }, | |
8332 | }; | |
8333 | ||
8334 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
8335 | static const struct ofpact_map of12[] = { | |
8336 | { OFPACT_OUTPUT, 0 }, | |
8337 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8338 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8339 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8340 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8341 | { OFPACT_PUSH_VLAN, 17 }, | |
8342 | { OFPACT_STRIP_VLAN, 18 }, | |
8343 | { OFPACT_PUSH_MPLS, 19 }, | |
8344 | { OFPACT_POP_MPLS, 20 }, | |
8345 | { OFPACT_SET_QUEUE, 21 }, | |
8346 | { OFPACT_GROUP, 22 }, | |
8347 | { OFPACT_SET_IP_TTL, 23 }, | |
8348 | { OFPACT_DEC_TTL, 24 }, | |
8349 | { OFPACT_SET_FIELD, 25 }, | |
8350 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
8351 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
8352 | { 0, -1 }, | |
8353 | }; | |
8354 | ||
8355 | switch (version) { | |
8356 | case OFP10_VERSION: | |
8357 | return of10; | |
8358 | ||
8359 | case OFP11_VERSION: | |
8360 | return of11; | |
8361 | ||
8362 | case OFP12_VERSION: | |
8363 | case OFP13_VERSION: | |
8364 | case OFP14_VERSION: | |
8365 | case OFP15_VERSION: | |
b79d45a1 | 8366 | case OFP16_VERSION: |
08d1e234 BP |
8367 | default: |
8368 | return of12; | |
8369 | } | |
8370 | } | |
8371 | ||
8372 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
8373 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
8374 | * returns the result. */ | |
8375 | ovs_be32 | |
8376 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
8377 | { | |
8378 | uint32_t openflow_bitmap = 0; | |
8379 | const struct ofpact_map *x; | |
8380 | ||
8381 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8382 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
8383 | openflow_bitmap |= 1u << x->ofpat; | |
8384 | } | |
8385 | } | |
8386 | return htonl(openflow_bitmap); | |
8387 | } | |
8388 | ||
8389 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
8390 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
8391 | * and returns the result. */ | |
8392 | uint64_t | |
8393 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
8394 | { | |
8395 | uint64_t ofpact_bitmap = 0; | |
8396 | const struct ofpact_map *x; | |
8397 | ||
8398 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8399 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
8400 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
8401 | } | |
8402 | } | |
8403 | return ofpact_bitmap; | |
8404 | } | |
8405 | ||
8406 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
8407 | * by 'ofpacts_bitmap'. */ | |
8408 | void | |
8409 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
8410 | { | |
8411 | if (!ofpacts_bitmap) { | |
8412 | ds_put_cstr(s, "<none>"); | |
8413 | } else { | |
8414 | while (ofpacts_bitmap) { | |
8415 | ds_put_format(s, "%s ", | |
8416 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
8417 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
8418 | } | |
8419 | ds_chomp(s, ' '); | |
8420 | } | |
8421 | } | |
8422 | \f | |
f25d0cf3 BP |
8423 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
8424 | static bool | |
4e022ec0 | 8425 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
8426 | { |
8427 | switch (ofpact->type) { | |
8428 | case OFPACT_OUTPUT: | |
8429 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
8430 | case OFPACT_ENQUEUE: | |
8431 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
8432 | case OFPACT_CONTROLLER: | |
8433 | return port == OFPP_CONTROLLER; | |
8434 | ||
8435 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 8436 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
8437 | case OFPACT_BUNDLE: |
8438 | case OFPACT_SET_VLAN_VID: | |
8439 | case OFPACT_SET_VLAN_PCP: | |
8440 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 8441 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
8442 | case OFPACT_SET_ETH_SRC: |
8443 | case OFPACT_SET_ETH_DST: | |
8444 | case OFPACT_SET_IPV4_SRC: | |
8445 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 8446 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 8447 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 8448 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
8449 | case OFPACT_SET_L4_SRC_PORT: |
8450 | case OFPACT_SET_L4_DST_PORT: | |
8451 | case OFPACT_REG_MOVE: | |
b2dd70be | 8452 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
8453 | case OFPACT_STACK_PUSH: |
8454 | case OFPACT_STACK_POP: | |
f25d0cf3 | 8455 | case OFPACT_DEC_TTL: |
097d4939 JR |
8456 | case OFPACT_SET_MPLS_LABEL: |
8457 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 8458 | case OFPACT_SET_MPLS_TTL: |
b676167a | 8459 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 8460 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 8461 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
8462 | case OFPACT_SET_QUEUE: |
8463 | case OFPACT_POP_QUEUE: | |
8464 | case OFPACT_FIN_TIMEOUT: | |
8465 | case OFPACT_RESUBMIT: | |
8466 | case OFPACT_LEARN: | |
18080541 | 8467 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 8468 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
8469 | case OFPACT_NOTE: |
8470 | case OFPACT_EXIT: | |
e672ff9b | 8471 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
8472 | case OFPACT_PUSH_MPLS: |
8473 | case OFPACT_POP_MPLS: | |
29089a54 | 8474 | case OFPACT_SAMPLE: |
b19e8793 | 8475 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 8476 | case OFPACT_CLONE: |
7fdb60a7 | 8477 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 8478 | case OFPACT_GOTO_TABLE: |
638a19b0 | 8479 | case OFPACT_METER: |
7395c052 | 8480 | case OFPACT_GROUP: |
d4abaff5 | 8481 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 8482 | case OFPACT_DEBUG_SLOW: |
07659514 | 8483 | case OFPACT_CT: |
72fe7578 | 8484 | case OFPACT_CT_CLEAR: |
9ac0aada | 8485 | case OFPACT_NAT: |
f839892a JS |
8486 | case OFPACT_ENCAP: |
8487 | case OFPACT_DECAP: | |
491e05c2 | 8488 | case OFPACT_DEC_NSH_TTL: |
f25d0cf3 BP |
8489 | default: |
8490 | return false; | |
8491 | } | |
8492 | } | |
8493 | ||
8494 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
8495 | * to 'port', false otherwise. */ | |
8496 | bool | |
8497 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 8498 | ofp_port_t port) |
c2d936a4 BP |
8499 | { |
8500 | const struct ofpact *a; | |
f25d0cf3 | 8501 | |
4f20179d | 8502 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8503 | if (ofpact_outputs_to_port(a, port)) { |
8504 | return true; | |
8505 | } | |
8506 | } | |
f25d0cf3 | 8507 | |
c2d936a4 BP |
8508 | return false; |
8509 | } | |
f25d0cf3 | 8510 | |
c2d936a4 BP |
8511 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
8512 | * to 'group', false otherwise. */ | |
8513 | bool | |
8514 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
8515 | uint32_t group_id) | |
8516 | { | |
8517 | const struct ofpact *a; | |
b02475c5 | 8518 | |
4f20179d | 8519 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8520 | if (a->type == OFPACT_GROUP |
8521 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
8522 | return true; | |
8523 | } | |
8524 | } | |
b02475c5 | 8525 | |
c2d936a4 BP |
8526 | return false; |
8527 | } | |
8dd54666 | 8528 | |
6cc9d77c BP |
8529 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8530 | * actions in 'b' are bytewise identical. */ | |
c2d936a4 BP |
8531 | bool |
8532 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
8533 | const struct ofpact *b, size_t b_len) | |
8534 | { | |
8535 | return a_len == b_len && !memcmp(a, b, a_len); | |
8536 | } | |
29089a54 | 8537 | |
6cc9d77c BP |
8538 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8539 | * actions in 'b' are identical when formatted as strings. (Converting actions | |
8540 | * to string form suppresses some rarely meaningful differences, such as the | |
8541 | * 'compat' member of actions.) */ | |
8542 | bool | |
8543 | ofpacts_equal_stringwise(const struct ofpact *a, size_t a_len, | |
8544 | const struct ofpact *b, size_t b_len) | |
8545 | { | |
8546 | struct ds a_s = DS_EMPTY_INITIALIZER; | |
efefbcae BP |
8547 | struct ofpact_format_params a_fp = { .s = &a_s }; |
8548 | ofpacts_format(a, a_len, &a_fp); | |
6cc9d77c | 8549 | |
efefbcae BP |
8550 | struct ds b_s = DS_EMPTY_INITIALIZER; |
8551 | struct ofpact_format_params b_fp = { .s = &b_s }; | |
8552 | ofpacts_format(b, b_len, &b_fp); | |
6cc9d77c BP |
8553 | |
8554 | bool equal = !strcmp(ds_cstr(&a_s), ds_cstr(&b_s)); | |
8555 | ||
8556 | ds_destroy(&a_s); | |
8557 | ds_destroy(&b_s); | |
8558 | ||
8559 | return equal; | |
8560 | } | |
8561 | ||
c2d936a4 BP |
8562 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
8563 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
8564 | * | |
8565 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
8566 | * ofpacts_verify()). */ | |
8567 | uint32_t | |
8568 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
8569 | { | |
8570 | const struct ofpact *a; | |
7fdb60a7 | 8571 | |
c2d936a4 BP |
8572 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
8573 | enum ovs_instruction_type inst; | |
b19e8793 | 8574 | |
c2d936a4 BP |
8575 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
8576 | if (a->type == OFPACT_METER) { | |
8577 | return ofpact_get_METER(a)->meter_id; | |
8578 | } else if (inst > OVSINST_OFPIT13_METER) { | |
8579 | break; | |
4cceacb9 | 8580 | } |
c2d936a4 | 8581 | } |
638a19b0 | 8582 | |
c2d936a4 BP |
8583 | return 0; |
8584 | } | |
8585 | \f | |
8586 | /* Formatting ofpacts. */ | |
7395c052 | 8587 | |
c2d936a4 | 8588 | static void |
50f96b10 | 8589 | ofpact_format(const struct ofpact *a, |
efefbcae | 8590 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
8591 | { |
8592 | switch (a->type) { | |
8593 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8594 | case OFPACT_##ENUM: \ | |
efefbcae | 8595 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), fp); \ |
c2d936a4 BP |
8596 | break; |
8597 | OFPACTS | |
8598 | #undef OFPACT | |
8599 | default: | |
8600 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
8601 | } |
8602 | } | |
8603 | ||
8604 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
efefbcae BP |
8605 | * 'ofpacts' to 'fp->s'. If 'port_map' is nonnull, uses it to translate port |
8606 | * numbers to names in output. */ | |
f25d0cf3 BP |
8607 | void |
8608 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
efefbcae | 8609 | const struct ofpact_format_params *fp) |
f25d0cf3 | 8610 | { |
f25d0cf3 | 8611 | if (!ofpacts_len) { |
efefbcae | 8612 | ds_put_format(fp->s, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
8613 | } else { |
8614 | const struct ofpact *a; | |
8615 | ||
8616 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8617 | if (a != ofpacts) { | |
efefbcae | 8618 | ds_put_char(fp->s, ','); |
f25d0cf3 | 8619 | } |
8dd54666 | 8620 | |
efefbcae | 8621 | ofpact_format(a, fp); |
f25d0cf3 BP |
8622 | } |
8623 | } | |
8624 | } | |
8625 | \f | |
8626 | /* Internal use by helpers. */ | |
8627 | ||
ce058104 | 8628 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
8629 | void * |
8630 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
8631 | { | |
8632 | struct ofpact *ofpact; | |
8633 | ||
6fd6ed71 PS |
8634 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
8635 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
8636 | ofpact_init(ofpact, type, len); |
8637 | return ofpact; | |
8638 | } | |
8639 | ||
ce058104 | 8640 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
8641 | void |
8642 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
8643 | { | |
8644 | memset(ofpact, 0, len); | |
8645 | ofpact->type = type; | |
c2d936a4 | 8646 | ofpact->raw = -1; |
f25d0cf3 BP |
8647 | ofpact->len = len; |
8648 | } | |
ce058104 BP |
8649 | |
8650 | /* Implementation of ofpact_finish_<ENUM>(). | |
8651 | * | |
8652 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
8653 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
8654 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
8655 | * the end of ofp-actions.h for more information. |
8656 | * | |
8657 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
8658 | * pointer to the return value of this function. */ | |
8659 | void * | |
34abaa3d | 8660 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 8661 | { |
5308056f JS |
8662 | ptrdiff_t len; |
8663 | ||
6fd6ed71 | 8664 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 8665 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 8666 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 8667 | ofpact->len = len; |
2bd318de | 8668 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
8669 | |
8670 | return ofpacts->header; | |
f25d0cf3 | 8671 | } |
c2d936a4 | 8672 | \f |
cab50449 | 8673 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 8674 | ofpact_parse(enum ofpact_type type, char *value, |
efefbcae | 8675 | const struct ofpact_parse_params *pp) |
c2d936a4 BP |
8676 | { |
8677 | switch (type) { | |
50f96b10 | 8678 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
c2d936a4 | 8679 | case OFPACT_##ENUM: \ |
efefbcae | 8680 | return parse_##ENUM(value, pp); |
c2d936a4 BP |
8681 | OFPACTS |
8682 | #undef OFPACT | |
8683 | default: | |
8684 | OVS_NOT_REACHED(); | |
8685 | } | |
8686 | } | |
8687 | ||
8688 | static bool | |
8689 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
8690 | { | |
8691 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8692 | if (!strcasecmp(name, NAME)) { \ | |
8693 | *type = OFPACT_##ENUM; \ | |
8694 | return true; \ | |
8695 | } | |
8696 | OFPACTS | |
8697 | #undef OFPACT | |
8698 | ||
8699 | return false; | |
8700 | } | |
8701 | ||
8702 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
8703 | * | |
8704 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
8705 | * error. The caller is responsible for freeing the returned string. |
8706 | * | |
8707 | * If 'outer_action' is specified, indicates that the actions being parsed | |
8708 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 8709 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8710 | ofpacts_parse__(char *str, const struct ofpact_parse_params *pp, |
d824b5b7 | 8711 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8712 | { |
8713 | int prev_inst = -1; | |
8714 | enum ofperr retval; | |
8715 | char *key, *value; | |
8716 | bool drop = false; | |
8717 | char *pos; | |
8718 | ||
8719 | pos = str; | |
8720 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
8721 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
8722 | enum ofpact_type type; | |
8723 | char *error = NULL; | |
8724 | ofp_port_t port; | |
8725 | ||
8726 | if (ofpact_type_from_name(key, &type)) { | |
efefbcae | 8727 | error = ofpact_parse(type, value, pp); |
c2d936a4 BP |
8728 | inst = ovs_instruction_type_from_ofpact_type(type); |
8729 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
efefbcae | 8730 | error = parse_set_vlan_vid(value, true, pp); |
c2d936a4 | 8731 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { |
efefbcae | 8732 | error = parse_set_vlan_pcp(value, true, pp); |
c2d936a4 | 8733 | } else if (!strcasecmp(key, "set_nw_ttl")) { |
efefbcae | 8734 | error = parse_SET_IP_TTL(value, pp); |
c2d936a4 | 8735 | } else if (!strcasecmp(key, "pop_vlan")) { |
efefbcae | 8736 | error = parse_pop_vlan(pp); |
c2d936a4 | 8737 | } else if (!strcasecmp(key, "set_tunnel64")) { |
efefbcae | 8738 | error = parse_set_tunnel(value, NXAST_RAW_SET_TUNNEL64, pp); |
7eb4b1f1 | 8739 | } else if (!strcasecmp(key, "load")) { |
efefbcae | 8740 | error = parse_reg_load(value, pp); |
c2d936a4 | 8741 | } else if (!strcasecmp(key, "bundle_load")) { |
efefbcae | 8742 | error = parse_bundle_load(value, pp); |
c2d936a4 BP |
8743 | } else if (!strcasecmp(key, "drop")) { |
8744 | drop = true; | |
8745 | } else if (!strcasecmp(key, "apply_actions")) { | |
8746 | return xstrdup("apply_actions is the default instruction"); | |
efefbcae BP |
8747 | } else if (ofputil_port_from_string(key, pp->port_map, &port)) { |
8748 | ofpact_put_OUTPUT(pp->ofpacts)->port = port; | |
c2d936a4 BP |
8749 | } else { |
8750 | return xasprintf("unknown action %s", key); | |
8751 | } | |
8752 | if (error) { | |
8753 | return error; | |
8754 | } | |
8755 | ||
8756 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
8757 | if (!allow_instructions) { | |
8758 | return xasprintf("only actions are allowed here (not " | |
8759 | "instruction %s)", | |
8760 | ovs_instruction_name_from_type(inst)); | |
8761 | } | |
8762 | if (inst == prev_inst) { | |
8763 | return xasprintf("instruction %s may be specified only once", | |
8764 | ovs_instruction_name_from_type(inst)); | |
8765 | } | |
8766 | } | |
8767 | if (prev_inst != -1 && inst < prev_inst) { | |
8768 | return xasprintf("instruction %s must be specified before %s", | |
8769 | ovs_instruction_name_from_type(inst), | |
8770 | ovs_instruction_name_from_type(prev_inst)); | |
8771 | } | |
8772 | prev_inst = inst; | |
8773 | } | |
c2d936a4 | 8774 | |
efefbcae | 8775 | if (drop && pp->ofpacts->size) { |
c2d936a4 BP |
8776 | return xstrdup("\"drop\" must not be accompanied by any other action " |
8777 | "or instruction"); | |
8778 | } | |
8779 | ||
efefbcae | 8780 | retval = ofpacts_verify(pp->ofpacts->data, pp->ofpacts->size, |
c2d936a4 BP |
8781 | (allow_instructions |
8782 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
8783 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
8784 | outer_action); | |
c2d936a4 BP |
8785 | if (retval) { |
8786 | return xstrdup("Incorrect instruction ordering"); | |
8787 | } | |
8788 | ||
8789 | return NULL; | |
8790 | } | |
8791 | ||
cab50449 | 8792 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8793 | ofpacts_parse(char *str, const struct ofpact_parse_params *pp, |
50f96b10 | 8794 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 | 8795 | { |
efefbcae BP |
8796 | uint32_t orig_size = pp->ofpacts->size; |
8797 | char *error = ofpacts_parse__(str, pp, allow_instructions, outer_action); | |
c2d936a4 | 8798 | if (error) { |
efefbcae | 8799 | pp->ofpacts->size = orig_size; |
c2d936a4 BP |
8800 | } |
8801 | return error; | |
8802 | } | |
8803 | ||
cab50449 | 8804 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8805 | ofpacts_parse_copy(const char *s_, const struct ofpact_parse_params *pp, |
d824b5b7 | 8806 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8807 | { |
8808 | char *error, *s; | |
8809 | ||
efefbcae | 8810 | *pp->usable_protocols = OFPUTIL_P_ANY; |
c2d936a4 BP |
8811 | |
8812 | s = xstrdup(s_); | |
efefbcae | 8813 | error = ofpacts_parse(s, pp, allow_instructions, outer_action); |
c2d936a4 BP |
8814 | free(s); |
8815 | ||
8816 | return error; | |
8817 | } | |
8818 | ||
8819 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
8820 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
8821 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
8822 | * |
8823 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8824 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8825 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8826 | ofpacts_parse_actions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 8827 | { |
efefbcae | 8828 | return ofpacts_parse_copy(s, pp, false, 0); |
c2d936a4 BP |
8829 | } |
8830 | ||
8831 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
8832 | * 'ofpacts'. | |
8833 | * | |
8834 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8835 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8836 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8837 | ofpacts_parse_instructions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 8838 | { |
efefbcae | 8839 | return ofpacts_parse_copy(s, pp, true, 0); |
c2d936a4 | 8840 | } |
08d1e234 BP |
8841 | |
8842 | const char * | |
8843 | ofpact_name(enum ofpact_type type) | |
8844 | { | |
8845 | switch (type) { | |
8846 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
8847 | OFPACTS | |
8848 | #undef OFPACT | |
8849 | } | |
8850 | return "<unknown>"; | |
8851 | } | |
c2d936a4 BP |
8852 | \f |
8853 | /* Low-level action decoding and encoding functions. */ | |
8854 | ||
8855 | /* Everything needed to identify a particular OpenFlow action. */ | |
8856 | struct ofpact_hdrs { | |
8857 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
8858 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
8859 | uint8_t ofp_version; /* From ofp_header. */ | |
8860 | }; | |
8861 | ||
8862 | /* Information about a particular OpenFlow action. */ | |
8863 | struct ofpact_raw_instance { | |
8864 | /* The action's identity. */ | |
8865 | struct ofpact_hdrs hdrs; | |
8866 | enum ofp_raw_action_type raw; | |
8867 | ||
8868 | /* Looking up the action. */ | |
8869 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
8870 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
8871 | ||
8872 | /* The action's encoded size. | |
8873 | * | |
8874 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
8875 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
8876 | * OFP_ACTION_ALIGN) == 65528. */ | |
8877 | unsigned short int min_length; | |
8878 | unsigned short int max_length; | |
8879 | ||
8880 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
8881 | * offset of that argument from the beginning of the action and 'arg_len' | |
8882 | * its length, both in bytes. | |
8883 | * | |
8884 | * For actions that take other forms, these are both zero. */ | |
8885 | unsigned short int arg_ofs; | |
8886 | unsigned short int arg_len; | |
8887 | ||
8888 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
8889 | const char *name; | |
8890 | ||
8891 | /* If this action is deprecated, a human-readable string with a brief | |
8892 | * explanation. */ | |
8893 | const char *deprecation; | |
8894 | }; | |
8895 | ||
8896 | /* Action header. */ | |
8897 | struct ofp_action_header { | |
8898 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
8899 | * version (see enum ofp_raw_action_type). | |
8900 | * | |
8901 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
8902 | * designates an OpenFlow vendor ID and that the remainder of the action | |
8903 | * structure has a vendor-defined meaning. | |
8904 | */ | |
8905 | #define OFPAT_VENDOR 0xffff | |
8906 | ovs_be16 type; | |
8907 | ||
8908 | /* Always a multiple of 8. */ | |
8909 | ovs_be16 len; | |
8910 | ||
8911 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
8912 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
8913 | ovs_be32 vendor; | |
8914 | }; | |
8915 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
8916 | ||
c2d936a4 BP |
8917 | static bool |
8918 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
8919 | const struct ofpact_hdrs *b) | |
8920 | { | |
8921 | return (a->vendor == b->vendor | |
8922 | && a->type == b->type | |
8923 | && a->ofp_version == b->ofp_version); | |
8924 | } | |
8925 | ||
8926 | static uint32_t | |
8927 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
8928 | { | |
a02f9a62 BP |
8929 | return hash_2words(hdrs->vendor, |
8930 | ((uint32_t) hdrs->type << 16) | hdrs->ofp_version); | |
c2d936a4 BP |
8931 | } |
8932 | ||
8933 | #include "ofp-actions.inc2" | |
8934 | ||
8935 | static struct hmap * | |
8936 | ofpact_decode_hmap(void) | |
8937 | { | |
8938 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8939 | static struct hmap hmap; | |
8940 | ||
8941 | if (ovsthread_once_start(&once)) { | |
8942 | struct ofpact_raw_instance *inst; | |
8943 | ||
8944 | hmap_init(&hmap); | |
8945 | for (inst = all_raw_instances; | |
8946 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8947 | inst++) { | |
8948 | hmap_insert(&hmap, &inst->decode_node, | |
8949 | ofpact_hdrs_hash(&inst->hdrs)); | |
8950 | } | |
8951 | ovsthread_once_done(&once); | |
8952 | } | |
8953 | return &hmap; | |
8954 | } | |
8955 | ||
8956 | static struct hmap * | |
8957 | ofpact_encode_hmap(void) | |
8958 | { | |
8959 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8960 | static struct hmap hmap; | |
8961 | ||
8962 | if (ovsthread_once_start(&once)) { | |
8963 | struct ofpact_raw_instance *inst; | |
8964 | ||
8965 | hmap_init(&hmap); | |
8966 | for (inst = all_raw_instances; | |
8967 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8968 | inst++) { | |
8969 | hmap_insert(&hmap, &inst->encode_node, | |
8970 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
8971 | } | |
8972 | ovsthread_once_done(&once); | |
8973 | } | |
8974 | return &hmap; | |
8975 | } | |
8976 | ||
8977 | static enum ofperr | |
8978 | ofpact_decode_raw(enum ofp_version ofp_version, | |
8979 | const struct ofp_action_header *oah, size_t length, | |
8980 | const struct ofpact_raw_instance **instp) | |
8981 | { | |
8982 | const struct ofpact_raw_instance *inst; | |
8983 | struct ofpact_hdrs hdrs; | |
8984 | ||
8985 | *instp = NULL; | |
8986 | if (length < sizeof *oah) { | |
8987 | return OFPERR_OFPBAC_BAD_LEN; | |
8988 | } | |
8989 | ||
8990 | /* Get base action type. */ | |
8991 | if (oah->type == htons(OFPAT_VENDOR)) { | |
8992 | /* Get vendor. */ | |
8993 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
8994 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
8995 | /* Get extension subtype. */ | |
8996 | const struct ext_action_header *nah; | |
c2d936a4 | 8997 | |
232c1e12 | 8998 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
8999 | if (length < sizeof *nah) { |
9000 | return OFPERR_OFPBAC_BAD_LEN; | |
9001 | } | |
9002 | hdrs.type = ntohs(nah->subtype); | |
9003 | } else { | |
9004 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
9005 | hdrs.vendor); | |
9006 | return OFPERR_OFPBAC_BAD_VENDOR; | |
9007 | } | |
9008 | } else { | |
9009 | hdrs.vendor = 0; | |
9010 | hdrs.type = ntohs(oah->type); | |
9011 | } | |
9012 | ||
9013 | hdrs.ofp_version = ofp_version; | |
9014 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
9015 | ofpact_decode_hmap()) { | |
9016 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
9017 | *instp = inst; | |
9018 | return 0; | |
9019 | } | |
9020 | } | |
9021 | ||
77b7d232 BP |
9022 | VLOG_WARN_RL(&rl, "unknown %s action for vendor %#"PRIx32" and " |
9023 | "type %"PRIu16, ofputil_version_to_string(ofp_version), | |
9024 | hdrs.vendor, hdrs.type); | |
c2d936a4 BP |
9025 | return (hdrs.vendor |
9026 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
9027 | : OFPERR_OFPBAC_BAD_TYPE); | |
9028 | } | |
9029 | ||
9030 | static enum ofperr | |
9031 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9032 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
9033 | { | |
6fd6ed71 | 9034 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
9035 | const struct ofpact_raw_instance *action; |
9036 | unsigned int length; | |
9037 | enum ofperr error; | |
9038 | ||
9039 | *raw = *arg = 0; | |
6fd6ed71 | 9040 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
9041 | if (error) { |
9042 | return error; | |
9043 | } | |
9044 | ||
9045 | if (action->deprecation) { | |
9046 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
9047 | action->name, ofputil_version_to_string(ofp_version), | |
9048 | action->deprecation); | |
9049 | } | |
9050 | ||
9051 | length = ntohs(oah->len); | |
6fd6ed71 | 9052 | if (length > buf->size) { |
b153b990 | 9053 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 9054 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
9055 | return OFPERR_OFPBAC_BAD_LEN; |
9056 | } | |
c2d936a4 BP |
9057 | if (length < action->min_length || length > action->max_length) { |
9058 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
9059 | "[%hu,%hu]", action->name, length, | |
9060 | action->min_length, action->max_length); | |
9061 | return OFPERR_OFPBAC_BAD_LEN; | |
9062 | } | |
9063 | if (length % 8) { | |
9064 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
9065 | "of 8", action->name, length); | |
9066 | return OFPERR_OFPBAC_BAD_LEN; | |
9067 | } | |
9068 | ||
9069 | *raw = action->raw; | |
9070 | *arg = 0; | |
9071 | if (action->arg_len) { | |
9072 | const uint8_t *p; | |
9073 | int i; | |
9074 | ||
9075 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
9076 | for (i = 0; i < action->arg_len; i++) { | |
9077 | *arg = (*arg << 8) | p[i]; | |
9078 | } | |
9079 | } | |
9080 | ||
9081 | ofpbuf_pull(buf, length); | |
9082 | ||
9083 | return 0; | |
9084 | } | |
9085 | ||
9086 | static const struct ofpact_raw_instance * | |
9087 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
9088 | { | |
9089 | const struct ofpact_raw_instance *inst; | |
9090 | ||
9091 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
9092 | ofpact_encode_hmap()) { | |
9093 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
9094 | return inst; | |
9095 | } | |
9096 | } | |
9097 | OVS_NOT_REACHED(); | |
9098 | } | |
9099 | ||
9100 | static void * | |
9101 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9102 | enum ofp_raw_action_type raw, uint64_t arg) | |
9103 | { | |
9104 | const struct ofpact_raw_instance *inst; | |
9105 | struct ofp_action_header *oah; | |
9106 | const struct ofpact_hdrs *hdrs; | |
9107 | ||
9108 | inst = ofpact_raw_lookup(ofp_version, raw); | |
9109 | hdrs = &inst->hdrs; | |
9110 | ||
9111 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
9112 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
9113 | oah->len = htons(inst->min_length); | |
9114 | oah->vendor = htonl(hdrs->vendor); | |
9115 | ||
9116 | switch (hdrs->vendor) { | |
9117 | case 0: | |
9118 | break; | |
9119 | ||
232c1e12 BP |
9120 | case NX_VENDOR_ID: |
9121 | case ONF_VENDOR_ID: { | |
9122 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
9123 | nah->subtype = htons(hdrs->type); |
9124 | break; | |
9125 | } | |
9126 | ||
9127 | default: | |
9128 | OVS_NOT_REACHED(); | |
9129 | } | |
9130 | ||
9131 | if (inst->arg_len) { | |
9132 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
9133 | int i; | |
9134 | ||
9135 | for (i = 0; i < inst->arg_len; i++) { | |
9136 | *--p = arg; | |
9137 | arg >>= 8; | |
9138 | } | |
9139 | } else { | |
9140 | ovs_assert(!arg); | |
9141 | } | |
9142 | ||
9143 | return oah; | |
9144 | } | |
178742f9 BP |
9145 | |
9146 | static void | |
9147 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
9148 | { | |
9149 | struct ofp_action_header *oah; | |
9150 | ||
9ac0aada JR |
9151 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
9152 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
9153 | |
9154 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 9155 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
9156 | } |
9157 |