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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. */ |
bdcad671 BP |
757 | }; |
758 | ||
aad28f47 BP |
759 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
760 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 761 | |
c2d936a4 BP |
762 | static enum ofperr |
763 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 764 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 765 | struct ofpbuf *out) |
f25d0cf3 BP |
766 | { |
767 | struct ofpact_controller *oc; | |
768 | ||
769 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 770 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
771 | oc->max_len = ntohs(nac->max_len); |
772 | oc->controller_id = ntohs(nac->controller_id); | |
773 | oc->reason = nac->reason; | |
ce058104 | 774 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
775 | |
776 | return 0; | |
777 | } | |
778 | ||
779 | static enum ofperr | |
aad28f47 | 780 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
781 | enum ofp_version ofp_version OVS_UNUSED, |
782 | struct ofpbuf *out) | |
783 | { | |
aad28f47 | 784 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
785 | return OFPERR_NXBRC_MUST_BE_ZERO; |
786 | } | |
787 | ||
788 | size_t start_ofs = out->size; | |
789 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
790 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
791 | oc->max_len = UINT16_MAX; | |
792 | oc->reason = OFPR_ACTION; | |
793 | ||
794 | struct ofpbuf properties; | |
aad28f47 BP |
795 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
796 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
797 | |
798 | while (properties.size > 0) { | |
799 | struct ofpbuf payload; | |
800 | uint64_t type; | |
801 | ||
802 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
803 | if (error) { | |
804 | return error; | |
805 | } | |
806 | ||
807 | switch (type) { | |
808 | case NXAC2PT_MAX_LEN: | |
809 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
810 | break; | |
811 | ||
812 | case NXAC2PT_CONTROLLER_ID: | |
813 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
814 | break; | |
815 | ||
816 | case NXAC2PT_REASON: { | |
817 | uint8_t u8; | |
818 | error = ofpprop_parse_u8(&payload, &u8); | |
819 | oc->reason = u8; | |
820 | break; | |
821 | } | |
822 | ||
823 | case NXAC2PT_USERDATA: | |
824 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
825 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
826 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
827 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
828 | break; | |
829 | ||
77ab5fd2 BP |
830 | case NXAC2PT_PAUSE: |
831 | oc->pause = true; | |
832 | break; | |
833 | ||
bdcad671 BP |
834 | default: |
835 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
836 | break; | |
837 | } | |
838 | if (error) { | |
839 | return error; | |
840 | } | |
841 | } | |
842 | ||
ce058104 | 843 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 844 | |
c2d936a4 | 845 | return 0; |
f25d0cf3 BP |
846 | } |
847 | ||
c2d936a4 BP |
848 | static void |
849 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
850 | enum ofp_version ofp_version OVS_UNUSED, | |
851 | struct ofpbuf *out) | |
4cceacb9 | 852 | { |
bdcad671 | 853 | if (controller->userdata_len |
77ab5fd2 | 854 | || controller->pause |
bdcad671 BP |
855 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
856 | size_t start_ofs = out->size; | |
857 | put_NXAST_CONTROLLER2(out); | |
858 | if (controller->max_len != UINT16_MAX) { | |
859 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
860 | } | |
861 | if (controller->controller_id != 0) { | |
862 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
863 | controller->controller_id); | |
864 | } | |
865 | if (controller->reason != OFPR_ACTION) { | |
866 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
867 | } | |
868 | if (controller->userdata_len != 0) { | |
869 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
870 | controller->userdata_len); | |
871 | } | |
77ab5fd2 BP |
872 | if (controller->pause) { |
873 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
874 | } | |
bdcad671 BP |
875 | pad_ofpat(out, start_ofs); |
876 | } else { | |
877 | struct nx_action_controller *nac; | |
4cceacb9 | 878 | |
bdcad671 BP |
879 | nac = put_NXAST_CONTROLLER(out); |
880 | nac->max_len = htons(controller->max_len); | |
881 | nac->controller_id = htons(controller->controller_id); | |
882 | nac->reason = controller->reason; | |
883 | } | |
c2d936a4 BP |
884 | } |
885 | ||
cab50449 | 886 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 887 | parse_CONTROLLER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
888 | { |
889 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
890 | uint16_t controller_id = 0; | |
891 | uint16_t max_len = UINT16_MAX; | |
bdcad671 | 892 | const char *userdata = NULL; |
77ab5fd2 | 893 | bool pause = false; |
c2d936a4 BP |
894 | |
895 | if (!arg[0]) { | |
896 | /* Use defaults. */ | |
897 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
898 | char *error = str_to_u16(arg, "max_len", &max_len); | |
899 | if (error) { | |
900 | return error; | |
901 | } | |
902 | } else { | |
903 | char *name, *value; | |
904 | ||
905 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
906 | if (!strcmp(name, "reason")) { | |
907 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
908 | return xasprintf("unknown reason \"%s\"", value); | |
909 | } | |
910 | } else if (!strcmp(name, "max_len")) { | |
911 | char *error = str_to_u16(value, "max_len", &max_len); | |
912 | if (error) { | |
913 | return error; | |
914 | } | |
915 | } else if (!strcmp(name, "id")) { | |
916 | char *error = str_to_u16(value, "id", &controller_id); | |
917 | if (error) { | |
918 | return error; | |
919 | } | |
bdcad671 BP |
920 | } else if (!strcmp(name, "userdata")) { |
921 | userdata = value; | |
77ab5fd2 BP |
922 | } else if (!strcmp(name, "pause")) { |
923 | pause = true; | |
c2d936a4 BP |
924 | } else { |
925 | return xasprintf("unknown key \"%s\" parsing controller " | |
926 | "action", name); | |
927 | } | |
928 | } | |
4cceacb9 JS |
929 | } |
930 | ||
77ab5fd2 | 931 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause) { |
c2d936a4 | 932 | struct ofpact_output *output; |
4cceacb9 | 933 | |
efefbcae | 934 | output = ofpact_put_OUTPUT(pp->ofpacts); |
c2d936a4 BP |
935 | output->port = OFPP_CONTROLLER; |
936 | output->max_len = max_len; | |
937 | } else { | |
938 | struct ofpact_controller *controller; | |
939 | ||
efefbcae | 940 | controller = ofpact_put_CONTROLLER(pp->ofpacts); |
c2d936a4 BP |
941 | controller->max_len = max_len; |
942 | controller->reason = reason; | |
943 | controller->controller_id = controller_id; | |
77ab5fd2 | 944 | controller->pause = pause; |
bdcad671 BP |
945 | |
946 | if (userdata) { | |
efefbcae BP |
947 | size_t start_ofs = pp->ofpacts->size; |
948 | const char *end = ofpbuf_put_hex(pp->ofpacts, userdata, NULL); | |
bdcad671 BP |
949 | if (*end) { |
950 | return xstrdup("bad hex digit in `controller' " | |
951 | "action `userdata'"); | |
952 | } | |
efefbcae BP |
953 | size_t userdata_len = pp->ofpacts->size - start_ofs; |
954 | controller = pp->ofpacts->header; | |
bdcad671 BP |
955 | controller->userdata_len = userdata_len; |
956 | } | |
efefbcae | 957 | ofpact_finish_CONTROLLER(pp->ofpacts, &controller); |
c2d936a4 BP |
958 | } |
959 | ||
960 | return NULL; | |
4cceacb9 JS |
961 | } |
962 | ||
bdcad671 BP |
963 | static void |
964 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
965 | { | |
966 | for (size_t i = 0; i < len; i++) { | |
967 | if (i) { | |
968 | ds_put_char(s, '.'); | |
969 | } | |
970 | ds_put_format(s, "%02"PRIx8, data[i]); | |
971 | } | |
972 | } | |
973 | ||
f25d0cf3 | 974 | static void |
50f96b10 | 975 | format_CONTROLLER(const struct ofpact_controller *a, |
efefbcae | 976 | const struct ofpact_format_params *fp) |
f25d0cf3 | 977 | { |
77ab5fd2 BP |
978 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
979 | && !a->pause) { | |
efefbcae | 980 | ds_put_format(fp->s, "%sCONTROLLER:%s%"PRIu16, |
b1c5bf1f | 981 | colors.special, colors.end, a->max_len); |
c2d936a4 BP |
982 | } else { |
983 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 984 | |
efefbcae | 985 | ds_put_format(fp->s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
986 | if (reason != OFPR_ACTION) { |
987 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
988 | ||
efefbcae | 989 | ds_put_format(fp->s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
990 | ofputil_packet_in_reason_to_string( |
991 | reason, reasonbuf, sizeof reasonbuf)); | |
992 | } | |
993 | if (a->max_len != UINT16_MAX) { | |
efefbcae | 994 | ds_put_format(fp->s, "%smax_len=%s%"PRIu16",", |
b1c5bf1f | 995 | colors.param, colors.end, a->max_len); |
c2d936a4 BP |
996 | } |
997 | if (a->controller_id != 0) { | |
efefbcae | 998 | ds_put_format(fp->s, "%sid=%s%"PRIu16",", |
b1c5bf1f | 999 | colors.param, colors.end, a->controller_id); |
c2d936a4 | 1000 | } |
bdcad671 | 1001 | if (a->userdata_len) { |
efefbcae BP |
1002 | ds_put_format(fp->s, "%suserdata=%s", colors.param, colors.end); |
1003 | format_hex_arg(fp->s, a->userdata, a->userdata_len); | |
1004 | ds_put_char(fp->s, ','); | |
bdcad671 | 1005 | } |
77ab5fd2 | 1006 | if (a->pause) { |
efefbcae | 1007 | ds_put_format(fp->s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 1008 | } |
efefbcae BP |
1009 | ds_chomp(fp->s, ','); |
1010 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 | 1011 | } |
f25d0cf3 | 1012 | } |
c2d936a4 BP |
1013 | \f |
1014 | /* Enqueue action. */ | |
1015 | struct ofp10_action_enqueue { | |
1016 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
1017 | ovs_be16 len; /* Len is 16. */ | |
1018 | ovs_be16 port; /* Port that queue belongs. Should | |
1019 | refer to a valid physical port | |
1020 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
1021 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
1022 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
1023 | }; | |
1024 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 1025 | |
c2d967a5 | 1026 | static enum ofperr |
c2d936a4 | 1027 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 1028 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1029 | struct ofpbuf *out) |
c2d967a5 | 1030 | { |
c2d936a4 | 1031 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 1032 | |
c2d936a4 BP |
1033 | enqueue = ofpact_put_ENQUEUE(out); |
1034 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
1035 | enqueue->queue = ntohl(oae->queue_id); | |
1036 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
1037 | && enqueue->port != OFPP_IN_PORT | |
1038 | && enqueue->port != OFPP_LOCAL) { | |
1039 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1040 | } | |
1041 | return 0; | |
c2d967a5 MM |
1042 | } |
1043 | ||
c2d936a4 BP |
1044 | static void |
1045 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1046 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1047 | { |
c2d936a4 BP |
1048 | if (ofp_version == OFP10_VERSION) { |
1049 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1050 | |
c2d936a4 BP |
1051 | oae = put_OFPAT10_ENQUEUE(out); |
1052 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1053 | oae->queue_id = htonl(enqueue->queue); | |
1054 | } else { | |
0f2aaee9 BP |
1055 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1056 | ||
1057 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1058 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1059 | oao->max_len = OVS_BE16_MAX; | |
1060 | ||
1061 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1062 | } |
c2d936a4 | 1063 | } |
c2d967a5 | 1064 | |
cab50449 | 1065 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1066 | parse_ENQUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
1067 | { |
1068 | char *sp = NULL; | |
1069 | char *port = strtok_r(arg, ":q,", &sp); | |
1070 | char *queue = strtok_r(NULL, "", &sp); | |
1071 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1072 | |
c2d936a4 BP |
1073 | if (port == NULL || queue == NULL) { |
1074 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1075 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1076 | } |
1077 | ||
efefbcae BP |
1078 | enqueue = ofpact_put_ENQUEUE(pp->ofpacts); |
1079 | if (!ofputil_port_from_string(port, pp->port_map, &enqueue->port)) { | |
c2d936a4 BP |
1080 | return xasprintf("%s: enqueue to unknown port", port); |
1081 | } | |
1082 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1083 | } |
1084 | ||
c2d936a4 | 1085 | static void |
50f96b10 | 1086 | format_ENQUEUE(const struct ofpact_enqueue *a, |
efefbcae | 1087 | const struct ofpact_format_params *fp) |
29089a54 | 1088 | { |
efefbcae BP |
1089 | ds_put_format(fp->s, "%senqueue:%s", colors.param, colors.end); |
1090 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
1091 | ds_put_format(fp->s, ":%"PRIu32, a->queue); | |
c2d936a4 BP |
1092 | } |
1093 | \f | |
1094 | /* Action structure for NXAST_OUTPUT_REG. | |
1095 | * | |
1096 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1097 | * | |
1098 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1099 | * the NXAST_REG_LOAD action. | |
1100 | * | |
1101 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1102 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1103 | * | |
1104 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1105 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1106 | * field of OFPAT_OUTPUT. | |
1107 | * | |
1108 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1109 | struct nx_action_output_reg { | |
1110 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1111 | ovs_be16 len; /* 24. */ | |
1112 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1113 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1114 | |
c2d936a4 BP |
1115 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1116 | ovs_be32 src; /* Source. */ | |
29089a54 | 1117 | |
c2d936a4 | 1118 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1119 | |
c2d936a4 BP |
1120 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1121 | }; | |
1122 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1123 | |
bad8a439 BP |
1124 | /* Action structure for NXAST_OUTPUT_REG2. |
1125 | * | |
1126 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1127 | * experimenter OXM as 'src'. | |
1128 | */ | |
1129 | struct nx_action_output_reg2 { | |
1130 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1131 | ovs_be16 len; /* 24. */ | |
1132 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1133 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1134 | ||
1135 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1136 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1137 | ||
1138 | /* Followed by: | |
1139 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1140 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1141 | uint8_t pad[10]; | |
1142 | }; | |
1143 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1144 | ||
a7a2d006 | 1145 | static enum ofperr |
c2d936a4 | 1146 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1147 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1148 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1149 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
a7a2d006 | 1150 | { |
c2d936a4 | 1151 | struct ofpact_output_reg *output_reg; |
5c7c16d8 | 1152 | enum ofperr error; |
a7a2d006 | 1153 | |
c2d936a4 | 1154 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1155 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1156 | } | |
a7a2d006 | 1157 | |
c2d936a4 | 1158 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1159 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1160 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); |
1161 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1162 | output_reg->max_len = ntohs(naor->max_len); | |
5c7c16d8 YHW |
1163 | error = mf_vl_mff_mf_from_nxm_header(ntohl(naor->src), vl_mff_map, |
1164 | &output_reg->src.field, tlv_bitmap); | |
1165 | if (error) { | |
1166 | return error; | |
04f48a68 YHW |
1167 | } |
1168 | ||
c2d936a4 | 1169 | return mf_check_src(&output_reg->src, NULL); |
a7a2d006 JS |
1170 | } |
1171 | ||
bad8a439 BP |
1172 | static enum ofperr |
1173 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 | 1174 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1175 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1176 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 BP |
1177 | { |
1178 | struct ofpact_output_reg *output_reg; | |
5c7c16d8 YHW |
1179 | enum ofperr error; |
1180 | ||
bad8a439 BP |
1181 | output_reg = ofpact_put_OUTPUT_REG(out); |
1182 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
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); | |
1186 | ||
0a2869d5 | 1187 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1188 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 | 1189 | |
5c7c16d8 YHW |
1190 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &output_reg->src.field, |
1191 | NULL, tlv_bitmap); | |
bad8a439 BP |
1192 | if (error) { |
1193 | return error; | |
1194 | } | |
5c7c16d8 | 1195 | |
6fd6ed71 | 1196 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1197 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1198 | } | |
1199 | ||
1200 | return mf_check_src(&output_reg->src, NULL); | |
1201 | } | |
1202 | ||
c2d936a4 BP |
1203 | static void |
1204 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1205 | enum ofp_version ofp_version OVS_UNUSED, | |
1206 | struct ofpbuf *out) | |
f25d0cf3 | 1207 | { |
bad8a439 BP |
1208 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1209 | * cannot be encoded in the older form, encode it as | |
1210 | * NXAST_RAW_OUTPUT_REG2. */ | |
1211 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1212 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1213 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1214 | size_t size = out->size; |
bad8a439 BP |
1215 | |
1216 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1217 | output_reg->src.n_bits); | |
1218 | naor->max_len = htons(output_reg->max_len); | |
1219 | ||
6fd6ed71 | 1220 | out->size = size - sizeof naor->pad; |
04f48a68 | 1221 | nx_put_mff_header(out, output_reg->src.field, 0, false); |
6fd6ed71 | 1222 | out->size = size; |
bad8a439 BP |
1223 | } else { |
1224 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1225 | |
bad8a439 BP |
1226 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1227 | output_reg->src.n_bits); | |
04f48a68 | 1228 | naor->src = htonl(nxm_header_from_mff(output_reg->src.field)); |
bad8a439 BP |
1229 | naor->max_len = htons(output_reg->max_len); |
1230 | } | |
f25d0cf3 BP |
1231 | } |
1232 | ||
cab50449 | 1233 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1234 | parse_OUTPUT_REG(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 1235 | { |
efefbcae | 1236 | return parse_OUTPUT(arg, pp); |
f25d0cf3 BP |
1237 | } |
1238 | ||
c2d936a4 | 1239 | static void |
50f96b10 | 1240 | format_OUTPUT_REG(const struct ofpact_output_reg *a, |
efefbcae | 1241 | const struct ofpact_format_params *fp) |
f25d0cf3 | 1242 | { |
efefbcae BP |
1243 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
1244 | mf_format_subfield(&a->src, fp->s); | |
c2d936a4 BP |
1245 | } |
1246 | \f | |
1247 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1248 | * | |
1249 | * The bundle actions choose a slave from a supplied list of options. | |
1250 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1251 | * selection to a register. | |
1252 | * | |
1253 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1254 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1255 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1256 | * the total length of the action a multiple of 8. | |
1257 | * | |
1258 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1259 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1260 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1261 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1262 | * unsupported slave types. | |
1263 | * | |
1264 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1265 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1266 | * it should reject the action. | |
1267 | * | |
1268 | * Several algorithms take into account liveness when selecting slaves. The | |
1269 | * liveness of a slave is implementation defined (with one exception), but will | |
1270 | * generally take into account things like its carrier status and the results | |
1271 | * of any link monitoring protocols which happen to be running on it. In order | |
1272 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
63460a30 TLSC |
1273 | * considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the output |
1274 | * register if no slave is live. | |
c2d936a4 BP |
1275 | * |
1276 | * Some slave selection strategies require the use of a hash function, in which | |
1277 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1278 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1279 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1280 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1281 | * of 'basis' yield different hash results. | |
1282 | * | |
1283 | * The 'zero' parameter at the end of the action structure is reserved for | |
1284 | * future use. Switches are required to reject actions which have nonzero | |
1285 | * bytes in the 'zero' field. | |
1286 | * | |
1287 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1288 | * should reject actions which have nonzero bytes in either of these fields. | |
1289 | * | |
1290 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1291 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1292 | * similar to those for the NXAST_REG_LOAD action. */ | |
1293 | struct nx_action_bundle { | |
1294 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1295 | ovs_be16 len; /* Length including slaves. */ | |
1296 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1297 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1298 | |
c2d936a4 BP |
1299 | /* Slave choice algorithm to apply to hash value. */ |
1300 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1301 | |
c2d936a4 BP |
1302 | /* What fields to hash and how. */ |
1303 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1304 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1305 | |
c2d936a4 BP |
1306 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1307 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1308 | |
c2d936a4 BP |
1309 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1310 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1311 | |
c2d936a4 BP |
1312 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1313 | }; | |
1314 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1315 | |
c2d936a4 BP |
1316 | static enum ofperr |
1317 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
5c7c16d8 YHW |
1318 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
1319 | struct ofpbuf *ofpacts) | |
c2d936a4 | 1320 | { |
7ed58d4a | 1321 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(1, 5); |
c2d936a4 BP |
1322 | struct ofpact_bundle *bundle; |
1323 | uint32_t slave_type; | |
1324 | size_t slaves_size, i; | |
1325 | enum ofperr error; | |
bd85dac1 | 1326 | |
c2d936a4 BP |
1327 | bundle = ofpact_put_BUNDLE(ofpacts); |
1328 | ||
1329 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1330 | bundle->basis = ntohs(nab->basis); | |
1331 | bundle->fields = ntohs(nab->fields); | |
1332 | bundle->algorithm = ntohs(nab->algorithm); | |
1333 | slave_type = ntohl(nab->slave_type); | |
1334 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1335 | ||
1336 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1337 | if (!flow_hash_fields_valid(bundle->fields)) { | |
7ed58d4a | 1338 | VLOG_WARN_RL(&rll, "unsupported fields %d", (int) bundle->fields); |
c2d936a4 | 1339 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { |
7ed58d4a | 1340 | VLOG_WARN_RL(&rll, "too many slaves"); |
c2d936a4 BP |
1341 | } else if (bundle->algorithm != NX_BD_ALG_HRW |
1342 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
7ed58d4a | 1343 | VLOG_WARN_RL(&rll, "unsupported algorithm %d", (int) bundle->algorithm); |
508a9338 | 1344 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
7ed58d4a | 1345 | VLOG_WARN_RL(&rll, "unsupported slave type %"PRIu32, slave_type); |
c2d936a4 BP |
1346 | } else { |
1347 | error = 0; | |
1348 | } | |
bd85dac1 | 1349 | |
c2d936a4 | 1350 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
7ed58d4a | 1351 | VLOG_WARN_RL(&rll, "reserved field is nonzero"); |
c2d936a4 BP |
1352 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1353 | } | |
f25d0cf3 | 1354 | |
c2d936a4 | 1355 | if (load) { |
c2d936a4 BP |
1356 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); |
1357 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
5c7c16d8 YHW |
1358 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nab->dst), vl_mff_map, |
1359 | &bundle->dst.field, tlv_bitmap); | |
1360 | if (error) { | |
1361 | return error; | |
04f48a68 | 1362 | } |
f25d0cf3 | 1363 | |
c2d936a4 | 1364 | if (bundle->dst.n_bits < 16) { |
7ed58d4a | 1365 | VLOG_WARN_RL(&rll, "bundle_load action requires at least 16 bit " |
c2d936a4 BP |
1366 | "destination."); |
1367 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1368 | } | |
1369 | } else { | |
1370 | if (nab->ofs_nbits || nab->dst) { | |
7ed58d4a | 1371 | VLOG_WARN_RL(&rll, "bundle action has nonzero reserved fields"); |
c2d936a4 BP |
1372 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1373 | } | |
1374 | } | |
f25d0cf3 | 1375 | |
c2d936a4 | 1376 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
7ed58d4a | 1377 | VLOG_WARN_RL(&rll, "Nicira action %s only has %"PRIuSIZE" bytes " |
c2d936a4 | 1378 | "allocated for slaves. %"PRIuSIZE" bytes are required " |
fd13c6b5 | 1379 | "for %u slaves.", |
c2d936a4 BP |
1380 | load ? "bundle_load" : "bundle", slaves_size, |
1381 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1382 | error = OFPERR_OFPBAC_BAD_LEN; | |
5026a263 BP |
1383 | } else { |
1384 | for (i = 0; i < bundle->n_slaves; i++) { | |
1385 | ofp_port_t ofp_port | |
1386 | = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); | |
1387 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); | |
1388 | bundle = ofpacts->header; | |
1389 | } | |
c2d936a4 | 1390 | } |
f25d0cf3 | 1391 | |
ce058104 | 1392 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1393 | if (!error) { |
1394 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1395 | } | |
1396 | return error; | |
1397 | } | |
f25d0cf3 | 1398 | |
c2d936a4 | 1399 | static enum ofperr |
f3cd3ac7 JS |
1400 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1401 | enum ofp_version ofp_version OVS_UNUSED, | |
1402 | struct ofpbuf *out) | |
c2d936a4 | 1403 | { |
5c7c16d8 | 1404 | return decode_bundle(false, nab, NULL, NULL, out); |
c2d936a4 | 1405 | } |
f25d0cf3 | 1406 | |
c2d936a4 BP |
1407 | static enum ofperr |
1408 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1409 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1410 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1411 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 | 1412 | { |
5c7c16d8 | 1413 | return decode_bundle(true, nab, vl_mff_map, tlv_bitmap, out); |
c2d936a4 | 1414 | } |
c2d967a5 | 1415 | |
c2d936a4 BP |
1416 | static void |
1417 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1418 | enum ofp_version ofp_version OVS_UNUSED, | |
1419 | struct ofpbuf *out) | |
1420 | { | |
1421 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1422 | struct nx_action_bundle *nab; | |
1423 | ovs_be16 *slaves; | |
1424 | size_t i; | |
f25d0cf3 | 1425 | |
c2d936a4 BP |
1426 | nab = (bundle->dst.field |
1427 | ? put_NXAST_BUNDLE_LOAD(out) | |
1428 | : put_NXAST_BUNDLE(out)); | |
1429 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1430 | nab->algorithm = htons(bundle->algorithm); | |
1431 | nab->fields = htons(bundle->fields); | |
1432 | nab->basis = htons(bundle->basis); | |
508a9338 | 1433 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1434 | nab->n_slaves = htons(bundle->n_slaves); |
1435 | if (bundle->dst.field) { | |
1436 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1437 | bundle->dst.n_bits); | |
04f48a68 | 1438 | nab->dst = htonl(nxm_header_from_mff(bundle->dst.field)); |
c2d936a4 | 1439 | } |
f25d0cf3 | 1440 | |
c2d936a4 BP |
1441 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1442 | for (i = 0; i < bundle->n_slaves; i++) { | |
1443 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1444 | } | |
1445 | } | |
b02475c5 | 1446 | |
cab50449 | 1447 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1448 | parse_BUNDLE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1449 | { |
efefbcae | 1450 | return bundle_parse(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1451 | } |
b02475c5 | 1452 | |
cab50449 | 1453 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1454 | parse_bundle_load(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1455 | { |
efefbcae | 1456 | return bundle_parse_load(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1457 | } |
097d4939 | 1458 | |
c2d936a4 | 1459 | static void |
50f96b10 | 1460 | format_BUNDLE(const struct ofpact_bundle *a, |
efefbcae | 1461 | const struct ofpact_format_params *fp) |
c2d936a4 | 1462 | { |
efefbcae | 1463 | bundle_format(a, fp->port_map, fp->s); |
c2d936a4 BP |
1464 | } |
1465 | \f | |
1466 | /* Set VLAN actions. */ | |
097d4939 | 1467 | |
c2d936a4 BP |
1468 | static enum ofperr |
1469 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1470 | { | |
1471 | if (vid & ~0xfff) { | |
1472 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1473 | } else { | |
1474 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1475 | vlan_vid->vlan_vid = vid; | |
1476 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1477 | return 0; | |
1478 | } | |
1479 | } | |
0f3f3c3d | 1480 | |
c2d936a4 | 1481 | static enum ofperr |
f3cd3ac7 JS |
1482 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1483 | enum ofp_version ofp_version OVS_UNUSED, | |
1484 | struct ofpbuf *out) | |
c2d936a4 BP |
1485 | { |
1486 | return decode_set_vlan_vid(vid, true, out); | |
1487 | } | |
b676167a | 1488 | |
c2d936a4 | 1489 | static enum ofperr |
f3cd3ac7 JS |
1490 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1491 | enum ofp_version ofp_version OVS_UNUSED, | |
1492 | struct ofpbuf *out) | |
c2d936a4 BP |
1493 | { |
1494 | return decode_set_vlan_vid(vid, false, out); | |
1495 | } | |
29089a54 | 1496 | |
c2d936a4 BP |
1497 | static void |
1498 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1499 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1500 | { | |
1501 | uint16_t vid = vlan_vid->vlan_vid; | |
1502 | ||
1503 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1504 | * for such a feature. */ | |
1505 | if (ofp_version > OFP10_VERSION | |
1506 | && vlan_vid->push_vlan_if_needed | |
1507 | && !vlan_vid->flow_has_vlan) { | |
1508 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1509 | } |
1510 | ||
c2d936a4 BP |
1511 | if (ofp_version == OFP10_VERSION) { |
1512 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1513 | } else if (ofp_version == OFP11_VERSION) { | |
1514 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1515 | } else { | |
128684a6 | 1516 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1517 | } |
f25d0cf3 BP |
1518 | } |
1519 | ||
cab50449 | 1520 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1521 | parse_set_vlan_vid(char *arg, bool push_vlan_if_needed, |
1522 | const struct ofpact_parse_params *pp) | |
d01c980f | 1523 | { |
ca287d20 | 1524 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1525 | uint16_t vid; |
1526 | char *error; | |
d01c980f | 1527 | |
c2d936a4 | 1528 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1529 | if (error) { |
1530 | return error; | |
1531 | } | |
1532 | ||
c2d936a4 BP |
1533 | if (vid & ~VLAN_VID_MASK) { |
1534 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1535 | } |
efefbcae | 1536 | vlan_vid = ofpact_put_SET_VLAN_VID(pp->ofpacts); |
c2d936a4 BP |
1537 | vlan_vid->vlan_vid = vid; |
1538 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1539 | return NULL; | |
1540 | } | |
d01c980f | 1541 | |
cab50449 | 1542 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1543 | parse_SET_VLAN_VID(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1544 | { |
efefbcae | 1545 | return parse_set_vlan_vid(arg, false, pp); |
d01c980f BP |
1546 | } |
1547 | ||
c2d936a4 | 1548 | static void |
50f96b10 | 1549 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, |
efefbcae | 1550 | const struct ofpact_format_params *fp) |
c2d936a4 | 1551 | { |
efefbcae | 1552 | ds_put_format(fp->s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1553 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1554 | colors.end, a->vlan_vid); |
c2d936a4 BP |
1555 | } |
1556 | \f | |
1557 | /* Set PCP actions. */ | |
e3f8f887 | 1558 | |
c2d936a4 BP |
1559 | static enum ofperr |
1560 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1561 | { |
c2d936a4 BP |
1562 | if (pcp & ~7) { |
1563 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1564 | } else { | |
1565 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1566 | vlan_pcp->vlan_pcp = pcp; | |
1567 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1568 | return 0; | |
1569 | } | |
f25d0cf3 BP |
1570 | } |
1571 | ||
c2d936a4 | 1572 | static enum ofperr |
f3cd3ac7 JS |
1573 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1574 | enum ofp_version ofp_version OVS_UNUSED, | |
1575 | struct ofpbuf *out) | |
f25d0cf3 | 1576 | { |
c2d936a4 | 1577 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1578 | } |
1579 | ||
c2d936a4 | 1580 | static enum ofperr |
f3cd3ac7 JS |
1581 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1582 | enum ofp_version ofp_version OVS_UNUSED, | |
1583 | struct ofpbuf *out) | |
c2d936a4 BP |
1584 | { |
1585 | return decode_set_vlan_pcp(pcp, false, out); | |
1586 | } | |
f25d0cf3 | 1587 | |
699dddf1 | 1588 | static void |
c2d936a4 BP |
1589 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1590 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1591 | { |
c2d936a4 BP |
1592 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1593 | ||
1594 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1595 | * for such a feature. */ | |
1596 | if (ofp_version > OFP10_VERSION | |
1597 | && vlan_pcp->push_vlan_if_needed | |
1598 | && !vlan_pcp->flow_has_vlan) { | |
1599 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1600 | } | |
699dddf1 | 1601 | |
c2d936a4 BP |
1602 | if (ofp_version == OFP10_VERSION) { |
1603 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1604 | } else if (ofp_version == OFP11_VERSION) { | |
1605 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1606 | } else { | |
128684a6 | 1607 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1608 | } |
1609 | } | |
1610 | ||
cab50449 | 1611 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1612 | parse_set_vlan_pcp(char *arg, bool push_vlan_if_needed, |
1613 | const struct ofpact_parse_params *pp) | |
f25d0cf3 | 1614 | { |
c2d936a4 BP |
1615 | struct ofpact_vlan_pcp *vlan_pcp; |
1616 | uint8_t pcp; | |
1617 | char *error; | |
e3f8f887 | 1618 | |
c2d936a4 BP |
1619 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1620 | if (error) { | |
699dddf1 | 1621 | return error; |
f25d0cf3 BP |
1622 | } |
1623 | ||
c2d936a4 BP |
1624 | if (pcp & ~7) { |
1625 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1626 | } | |
efefbcae | 1627 | vlan_pcp = ofpact_put_SET_VLAN_PCP(pp->ofpacts); |
c2d936a4 BP |
1628 | vlan_pcp->vlan_pcp = pcp; |
1629 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1630 | return NULL; | |
1631 | } | |
1632 | ||
cab50449 | 1633 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1634 | parse_SET_VLAN_PCP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1635 | { |
efefbcae | 1636 | return parse_set_vlan_pcp(arg, false, pp); |
c2d936a4 BP |
1637 | } |
1638 | ||
1639 | static void | |
50f96b10 | 1640 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, |
efefbcae | 1641 | const struct ofpact_format_params *fp) |
c2d936a4 | 1642 | { |
efefbcae | 1643 | ds_put_format(fp->s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1644 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1645 | colors.end, a->vlan_pcp); |
c2d936a4 BP |
1646 | } |
1647 | \f | |
1648 | /* Strip VLAN actions. */ | |
1649 | ||
1650 | static enum ofperr | |
1651 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1652 | { | |
1653 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1654 | return 0; |
1655 | } | |
1656 | ||
8f2cded4 | 1657 | static enum ofperr |
c2d936a4 | 1658 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1659 | { |
c2d936a4 BP |
1660 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1661 | return 0; | |
1662 | } | |
f25d0cf3 | 1663 | |
c2d936a4 BP |
1664 | static void |
1665 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1666 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1667 | { | |
1668 | if (ofp_version == OFP10_VERSION) { | |
1669 | put_OFPAT10_STRIP_VLAN(out); | |
1670 | } else { | |
1671 | put_OFPAT11_POP_VLAN(out); | |
1672 | } | |
1673 | } | |
f25d0cf3 | 1674 | |
cab50449 | 1675 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1676 | parse_STRIP_VLAN(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 1677 | { |
efefbcae | 1678 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; |
c2d936a4 BP |
1679 | return NULL; |
1680 | } | |
1681 | ||
cab50449 | 1682 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1683 | parse_pop_vlan(const struct ofpact_parse_params *pp) |
c2d936a4 | 1684 | { |
efefbcae | 1685 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
c2d936a4 BP |
1686 | return NULL; |
1687 | } | |
1688 | ||
1689 | static void | |
50f96b10 | 1690 | format_STRIP_VLAN(const struct ofpact_null *a, |
efefbcae | 1691 | const struct ofpact_format_params *fp) |
c2d936a4 | 1692 | { |
efefbcae | 1693 | ds_put_format(fp->s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
b1c5bf1f QM |
1694 | ? "%spop_vlan%s" |
1695 | : "%sstrip_vlan%s"), | |
1696 | colors.value, colors.end); | |
c2d936a4 BP |
1697 | } |
1698 | \f | |
1699 | /* Push VLAN action. */ | |
1700 | ||
1701 | static enum ofperr | |
f3cd3ac7 JS |
1702 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1703 | enum ofp_version ofp_version OVS_UNUSED, | |
1704 | struct ofpbuf *out) | |
c2d936a4 | 1705 | { |
f0fb825a EG |
1706 | struct ofpact_push_vlan *push_vlan; |
1707 | if (!eth_type_vlan(eth_type)) { | |
c2d936a4 | 1708 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
f25d0cf3 | 1709 | } |
f0fb825a EG |
1710 | push_vlan = ofpact_put_PUSH_VLAN(out); |
1711 | push_vlan->ethertype = eth_type; | |
c2d936a4 BP |
1712 | return 0; |
1713 | } | |
f25d0cf3 | 1714 | |
c2d936a4 | 1715 | static void |
f0fb825a | 1716 | encode_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
c2d936a4 BP |
1717 | enum ofp_version ofp_version, struct ofpbuf *out) |
1718 | { | |
1719 | if (ofp_version == OFP10_VERSION) { | |
1720 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1721 | * follow this action. */ | |
1722 | } else { | |
f0fb825a | 1723 | put_OFPAT11_PUSH_VLAN(out, push_vlan->ethertype); |
f25d0cf3 | 1724 | } |
c2d936a4 | 1725 | } |
f25d0cf3 | 1726 | |
cab50449 | 1727 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1728 | parse_PUSH_VLAN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1729 | { |
f0fb825a | 1730 | struct ofpact_push_vlan *push_vlan; |
c2d936a4 BP |
1731 | uint16_t ethertype; |
1732 | char *error; | |
1733 | ||
efefbcae | 1734 | *pp->usable_protocols &= OFPUTIL_P_OF11_UP; |
c2d936a4 | 1735 | error = str_to_u16(arg, "ethertype", ðertype); |
4cceacb9 | 1736 | if (error) { |
4cceacb9 JS |
1737 | return error; |
1738 | } | |
1739 | ||
f0fb825a | 1740 | if (!eth_type_vlan(htons(ethertype))) { |
c2d936a4 | 1741 | return xasprintf("%s: not a valid VLAN ethertype", arg); |
f25d0cf3 | 1742 | } |
efefbcae | 1743 | push_vlan = ofpact_put_PUSH_VLAN(pp->ofpacts); |
f0fb825a | 1744 | push_vlan->ethertype = htons(ethertype); |
c2d936a4 | 1745 | return NULL; |
d01c980f BP |
1746 | } |
1747 | ||
c2d936a4 | 1748 | static void |
50f96b10 | 1749 | format_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
efefbcae | 1750 | const struct ofpact_format_params *fp) |
8f2cded4 | 1751 | { |
efefbcae | 1752 | ds_put_format(fp->s, "%spush_vlan:%s%#"PRIx16, |
f0fb825a | 1753 | colors.param, colors.end, ntohs(push_vlan->ethertype)); |
8f2cded4 | 1754 | } |
d01c980f | 1755 | \f |
c2d936a4 BP |
1756 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1757 | struct ofp_action_dl_addr { | |
1758 | ovs_be16 type; /* Type. */ | |
1759 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1760 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1761 | uint8_t pad[6]; |
1762 | }; | |
1763 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1764 | |
d01c980f | 1765 | static enum ofperr |
c2d936a4 | 1766 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1767 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1768 | struct ofpbuf *out) |
d01c980f | 1769 | { |
74ff3298 | 1770 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1771 | return 0; |
1772 | } | |
3ddcaf2d | 1773 | |
c2d936a4 BP |
1774 | static enum ofperr |
1775 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1776 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1777 | struct ofpbuf *out) |
1778 | { | |
74ff3298 | 1779 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1780 | return 0; |
1781 | } | |
d01c980f | 1782 | |
c2d936a4 BP |
1783 | static void |
1784 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1785 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1786 | struct ofpbuf *out) | |
1787 | { | |
c2d936a4 BP |
1788 | if (ofp_version < OFP12_VERSION) { |
1789 | struct ofp_action_dl_addr *oada; | |
1790 | ||
1791 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1792 | oada->dl_addr = mac->mac; |
c2d936a4 | 1793 | } else { |
128684a6 | 1794 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1795 | } |
1796 | } | |
1797 | ||
c2d936a4 BP |
1798 | static void |
1799 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1800 | struct ofpbuf *out) | |
b2dd70be | 1801 | { |
c2d936a4 BP |
1802 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1803 | out); | |
b2dd70be | 1804 | |
c2d936a4 | 1805 | } |
b2dd70be | 1806 | |
c2d936a4 BP |
1807 | static void |
1808 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1809 | enum ofp_version ofp_version, | |
1810 | struct ofpbuf *out) | |
1811 | { | |
1812 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1813 | out); | |
b2dd70be | 1814 | |
c2d936a4 | 1815 | } |
b2dd70be | 1816 | |
cab50449 | 1817 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1818 | parse_SET_ETH_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1819 | { |
efefbcae | 1820 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(pp->ofpacts)->mac); |
c2d936a4 BP |
1821 | } |
1822 | ||
cab50449 | 1823 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1824 | parse_SET_ETH_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1825 | { |
efefbcae | 1826 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(pp->ofpacts)->mac); |
b2dd70be JR |
1827 | } |
1828 | ||
1829 | static void | |
50f96b10 | 1830 | format_SET_ETH_SRC(const struct ofpact_mac *a, |
efefbcae | 1831 | const struct ofpact_format_params *fp) |
b2dd70be | 1832 | { |
efefbcae | 1833 | ds_put_format(fp->s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1834 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 | 1835 | } |
b2dd70be | 1836 | |
c2d936a4 | 1837 | static void |
50f96b10 | 1838 | format_SET_ETH_DST(const struct ofpact_mac *a, |
efefbcae | 1839 | const struct ofpact_format_params *fp) |
c2d936a4 | 1840 | { |
efefbcae | 1841 | ds_put_format(fp->s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1842 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 BP |
1843 | } |
1844 | \f | |
1845 | /* Set IPv4 address actions. */ | |
b2dd70be | 1846 | |
c2d936a4 | 1847 | static enum ofperr |
f3cd3ac7 JS |
1848 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1849 | enum ofp_version ofp_version OVS_UNUSED, | |
1850 | struct ofpbuf *out) | |
c2d936a4 BP |
1851 | { |
1852 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1853 | return 0; | |
b2dd70be JR |
1854 | } |
1855 | ||
c2d936a4 | 1856 | static enum ofperr |
f3cd3ac7 JS |
1857 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
1858 | enum ofp_version ofp_version OVS_UNUSED, | |
1859 | struct ofpbuf *out) | |
b2dd70be | 1860 | { |
c2d936a4 BP |
1861 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
1862 | return 0; | |
1863 | } | |
b2dd70be | 1864 | |
c2d936a4 BP |
1865 | static void |
1866 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
1867 | enum ofp_version ofp_version, | |
1868 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1869 | struct ofpbuf *out) | |
1870 | { | |
1871 | ovs_be32 addr = ipv4->ipv4; | |
1872 | if (ofp_version < OFP12_VERSION) { | |
1873 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 1874 | } else { |
128684a6 | 1875 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
1876 | } |
1877 | } | |
1878 | ||
a6fd70bb | 1879 | static void |
c2d936a4 BP |
1880 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
1881 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1882 | { |
c2d936a4 BP |
1883 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
1884 | out); | |
1885 | } | |
a6fd70bb | 1886 | |
c2d936a4 BP |
1887 | static void |
1888 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
1889 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1890 | { | |
1891 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
1892 | out); | |
1893 | } | |
a6fd70bb | 1894 | |
cab50449 | 1895 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1896 | parse_SET_IPV4_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1897 | { |
efefbcae | 1898 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(pp->ofpacts)->ipv4); |
c2d936a4 | 1899 | } |
a6fd70bb | 1900 | |
cab50449 | 1901 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1902 | parse_SET_IPV4_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1903 | { |
efefbcae | 1904 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(pp->ofpacts)->ipv4); |
c2d936a4 | 1905 | } |
a6fd70bb | 1906 | |
c2d936a4 | 1907 | static void |
50f96b10 | 1908 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, |
efefbcae | 1909 | const struct ofpact_format_params *fp) |
c2d936a4 | 1910 | { |
efefbcae | 1911 | ds_put_format(fp->s, "%smod_nw_src:%s"IP_FMT, |
b1c5bf1f | 1912 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 | 1913 | } |
097d4939 | 1914 | |
c2d936a4 | 1915 | static void |
50f96b10 | 1916 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, |
efefbcae | 1917 | const struct ofpact_format_params *fp) |
c2d936a4 | 1918 | { |
efefbcae | 1919 | ds_put_format(fp->s, "%smod_nw_dst:%s"IP_FMT, |
b1c5bf1f | 1920 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 BP |
1921 | } |
1922 | \f | |
1923 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 1924 | |
c2d936a4 | 1925 | static enum ofperr |
f3cd3ac7 JS |
1926 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
1927 | enum ofp_version ofp_version OVS_UNUSED, | |
1928 | struct ofpbuf *out) | |
c2d936a4 BP |
1929 | { |
1930 | if (dscp & ~IP_DSCP_MASK) { | |
1931 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1932 | } else { | |
1933 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
1934 | return 0; | |
a6fd70bb JR |
1935 | } |
1936 | } | |
1937 | ||
a6fd70bb | 1938 | static void |
c2d936a4 BP |
1939 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
1940 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 1941 | { |
c2d936a4 BP |
1942 | if (ofp_version < OFP12_VERSION) { |
1943 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
1944 | } else { | |
128684a6 | 1945 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
1946 | } |
1947 | } | |
a6fd70bb | 1948 | |
cab50449 | 1949 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1950 | parse_SET_IP_DSCP(char *arg, const struct ofpact_parse_params *pp) |
1951 | ||
c2d936a4 BP |
1952 | { |
1953 | uint8_t tos; | |
1954 | char *error; | |
a6fd70bb | 1955 | |
c2d936a4 BP |
1956 | error = str_to_u8(arg, "TOS", &tos); |
1957 | if (error) { | |
1958 | return error; | |
1959 | } | |
a6fd70bb | 1960 | |
c2d936a4 BP |
1961 | if (tos & ~IP_DSCP_MASK) { |
1962 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 1963 | } |
efefbcae | 1964 | ofpact_put_SET_IP_DSCP(pp->ofpacts)->dscp = tos; |
c2d936a4 | 1965 | return NULL; |
a6fd70bb JR |
1966 | } |
1967 | ||
b2dd70be | 1968 | static void |
50f96b10 | 1969 | format_SET_IP_DSCP(const struct ofpact_dscp *a, |
efefbcae | 1970 | const struct ofpact_format_params *fp) |
b2dd70be | 1971 | { |
efefbcae BP |
1972 | ds_put_format(fp->s, "%smod_nw_tos:%s%d", |
1973 | colors.param, colors.end, a->dscp); | |
c2d936a4 BP |
1974 | } |
1975 | \f | |
1976 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 1977 | |
c2d936a4 | 1978 | static enum ofperr |
f3cd3ac7 JS |
1979 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
1980 | enum ofp_version ofp_version OVS_UNUSED, | |
1981 | struct ofpbuf *out) | |
c2d936a4 BP |
1982 | { |
1983 | if (ecn & ~IP_ECN_MASK) { | |
1984 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 1985 | } else { |
c2d936a4 BP |
1986 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
1987 | return 0; | |
b2dd70be JR |
1988 | } |
1989 | } | |
1990 | ||
c2d936a4 BP |
1991 | static void |
1992 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
1993 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 1994 | { |
c2d936a4 BP |
1995 | uint8_t ecn = ip_ecn->ecn; |
1996 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
1997 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
1998 | .ofs = 0, .n_bits = 2 }; | |
1999 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
2000 | } else if (ofp_version == OFP11_VERSION) { |
2001 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
2002 | } else { | |
128684a6 | 2003 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
2004 | } |
2005 | } | |
d01c980f | 2006 | |
cab50449 | 2007 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2008 | parse_SET_IP_ECN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2009 | { |
2010 | uint8_t ecn; | |
2011 | char *error; | |
d01c980f | 2012 | |
c2d936a4 | 2013 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
2014 | if (error) { |
2015 | return error; | |
2016 | } | |
2017 | ||
c2d936a4 BP |
2018 | if (ecn & ~IP_ECN_MASK) { |
2019 | return xasprintf("%s: not a valid ECN", arg); | |
2020 | } | |
efefbcae | 2021 | ofpact_put_SET_IP_ECN(pp->ofpacts)->ecn = ecn; |
c2d936a4 | 2022 | return NULL; |
d01c980f BP |
2023 | } |
2024 | ||
c2d936a4 | 2025 | static void |
50f96b10 | 2026 | format_SET_IP_ECN(const struct ofpact_ecn *a, |
efefbcae | 2027 | const struct ofpact_format_params *fp) |
c2d936a4 | 2028 | { |
efefbcae | 2029 | ds_put_format(fp->s, "%smod_nw_ecn:%s%d", |
b1c5bf1f | 2030 | colors.param, colors.end, a->ecn); |
c2d936a4 BP |
2031 | } |
2032 | \f | |
2033 | /* Set IPv4/v6 TTL actions. */ | |
2034 | ||
d01c980f | 2035 | static enum ofperr |
f3cd3ac7 JS |
2036 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
2037 | enum ofp_version ofp_version OVS_UNUSED, | |
2038 | struct ofpbuf *out) | |
d01c980f | 2039 | { |
c2d936a4 BP |
2040 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
2041 | return 0; | |
2042 | } | |
2043 | ||
2044 | static void | |
2045 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
2046 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2047 | { | |
2048 | if (ofp_version >= OFP11_VERSION) { | |
2049 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
2050 | } else { | |
56a91749 BP |
2051 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
2052 | .ofs = 0, .n_bits = 8 }; | |
2053 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
2054 | } |
2055 | } | |
2056 | ||
cab50449 | 2057 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
2058 | parse_SET_IP_TTL(char *arg, const struct ofpact_parse_params *pp) |
2059 | ||
c2d936a4 BP |
2060 | { |
2061 | uint8_t ttl; | |
2062 | char *error; | |
d01c980f | 2063 | |
c2d936a4 | 2064 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2065 | if (error) { |
2066 | return error; | |
2067 | } | |
2068 | ||
efefbcae | 2069 | ofpact_put_SET_IP_TTL(pp->ofpacts)->ttl = ttl; |
c2d936a4 BP |
2070 | return NULL; |
2071 | } | |
d01c980f | 2072 | |
c2d936a4 | 2073 | static void |
50f96b10 | 2074 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, |
efefbcae | 2075 | const struct ofpact_format_params *fp) |
c2d936a4 | 2076 | { |
efefbcae BP |
2077 | ds_put_format(fp->s, "%smod_nw_ttl:%s%d", |
2078 | colors.param, colors.end, a->ttl); | |
c2d936a4 BP |
2079 | } |
2080 | \f | |
2081 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2082 | |
c2d936a4 | 2083 | static enum ofperr |
f3cd3ac7 JS |
2084 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2085 | enum ofp_version ofp_version OVS_UNUSED, | |
2086 | struct ofpbuf *out) | |
c2d936a4 BP |
2087 | { |
2088 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2089 | return 0; | |
2090 | } | |
d01c980f | 2091 | |
c2d936a4 | 2092 | static enum ofperr |
f3cd3ac7 JS |
2093 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2094 | enum ofp_version ofp_version OVS_UNUSED, | |
2095 | struct ofpbuf *out) | |
c2d936a4 BP |
2096 | { |
2097 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2098 | return 0; | |
2099 | } | |
d01c980f | 2100 | |
c2d936a4 BP |
2101 | static void |
2102 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2103 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2104 | enum mf_field_id field, struct ofpbuf *out) | |
2105 | { | |
2106 | uint16_t port = l4_port->port; | |
3e34fbdd | 2107 | |
c2d936a4 | 2108 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2109 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2110 | } else { |
2111 | ofpact_put_raw(out, ofp_version, raw, port); | |
2112 | } | |
2113 | } | |
8e61c110 | 2114 | |
c2d936a4 BP |
2115 | static void |
2116 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2117 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2118 | { | |
2119 | uint8_t proto = l4_port->flow_ip_proto; | |
2120 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2121 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2122 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2123 | : MFF_N_IDS); | |
276c4e7a | 2124 | |
c2d936a4 BP |
2125 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2126 | } | |
d01c980f | 2127 | |
c2d936a4 BP |
2128 | static void |
2129 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2130 | enum ofp_version ofp_version, | |
2131 | struct ofpbuf *out) | |
2132 | { | |
2133 | uint8_t proto = l4_port->flow_ip_proto; | |
2134 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2135 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2136 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2137 | : MFF_N_IDS); | |
d01c980f | 2138 | |
c2d936a4 BP |
2139 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2140 | } | |
7bcb1506 | 2141 | |
cab50449 | 2142 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2143 | parse_SET_L4_SRC_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2144 | { |
2145 | return str_to_u16(arg, "source port", | |
efefbcae | 2146 | &ofpact_put_SET_L4_SRC_PORT(pp->ofpacts)->port); |
c2d936a4 | 2147 | } |
d01c980f | 2148 | |
cab50449 | 2149 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2150 | parse_SET_L4_DST_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2151 | { |
2152 | return str_to_u16(arg, "destination port", | |
efefbcae | 2153 | &ofpact_put_SET_L4_DST_PORT(pp->ofpacts)->port); |
c2d936a4 | 2154 | } |
d01c980f | 2155 | |
c2d936a4 | 2156 | static void |
50f96b10 | 2157 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2158 | const struct ofpact_format_params *fp) |
c2d936a4 | 2159 | { |
efefbcae BP |
2160 | ds_put_format(fp->s, "%smod_tp_src:%s%d", |
2161 | colors.param, colors.end, a->port); | |
c2d936a4 | 2162 | } |
d01c980f | 2163 | |
c2d936a4 | 2164 | static void |
50f96b10 | 2165 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2166 | const struct ofpact_format_params *fp) |
c2d936a4 | 2167 | { |
efefbcae BP |
2168 | ds_put_format(fp->s, "%smod_tp_dst:%s%d", |
2169 | colors.param, colors.end, a->port); | |
c2d936a4 BP |
2170 | } |
2171 | \f | |
73178f20 BP |
2172 | /* Action structure for OFPAT_COPY_FIELD. */ |
2173 | struct ofp15_action_copy_field { | |
2174 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2175 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2176 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2177 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2178 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2179 | uint8_t pad[2]; |
f13cdd73 BP |
2180 | /* Followed by: |
2181 | * - OXM header for source field. | |
2182 | * - OXM header for destination field. | |
2183 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2184 | * The "pad2" member is the beginning of the above. */ |
2185 | uint8_t pad2[4]; | |
73178f20 | 2186 | }; |
f13cdd73 | 2187 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2188 | |
914624f8 BP |
2189 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2190 | struct onf_action_copy_field { | |
2191 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2192 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2193 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2194 | ovs_be16 exp_type; /* 3200. */ | |
2195 | uint8_t pad[2]; /* Not used. */ | |
2196 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2197 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2198 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2199 | uint8_t pad2[2]; /* Not used. */ | |
2200 | /* Followed by: | |
2201 | * - OXM header for source field. | |
2202 | * - OXM header for destination field. | |
2203 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2204 | * The "pad3" member is the beginning of the above. */ | |
2205 | uint8_t pad3[4]; /* Not used. */ | |
2206 | }; | |
2207 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2208 | ||
c2d936a4 BP |
2209 | /* Action structure for NXAST_REG_MOVE. |
2210 | * | |
2211 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2212 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2213 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2214 | * the next most significant bit, and so on. | |
2215 | * | |
2216 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2217 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2218 | * matching; it uses the actual value of a field.) | |
2219 | * | |
2220 | * The following nxm_header values are potentially acceptable as 'src': | |
2221 | * | |
2222 | * - NXM_OF_IN_PORT | |
2223 | * - NXM_OF_ETH_DST | |
2224 | * - NXM_OF_ETH_SRC | |
2225 | * - NXM_OF_ETH_TYPE | |
2226 | * - NXM_OF_VLAN_TCI | |
2227 | * - NXM_OF_IP_TOS | |
2228 | * - NXM_OF_IP_PROTO | |
2229 | * - NXM_OF_IP_SRC | |
2230 | * - NXM_OF_IP_DST | |
2231 | * - NXM_OF_TCP_SRC | |
2232 | * - NXM_OF_TCP_DST | |
2233 | * - NXM_OF_UDP_SRC | |
2234 | * - NXM_OF_UDP_DST | |
2235 | * - NXM_OF_ICMP_TYPE | |
2236 | * - NXM_OF_ICMP_CODE | |
2237 | * - NXM_OF_ARP_OP | |
2238 | * - NXM_OF_ARP_SPA | |
2239 | * - NXM_OF_ARP_TPA | |
2240 | * - NXM_NX_TUN_ID | |
2241 | * - NXM_NX_ARP_SHA | |
2242 | * - NXM_NX_ARP_THA | |
2243 | * - NXM_NX_ICMPV6_TYPE | |
2244 | * - NXM_NX_ICMPV6_CODE | |
2245 | * - NXM_NX_ND_SLL | |
2246 | * - NXM_NX_ND_TLL | |
2247 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2248 | * - NXM_NX_PKT_MARK | |
2249 | * - NXM_NX_TUN_IPV4_SRC | |
2250 | * - NXM_NX_TUN_IPV4_DST | |
2251 | * | |
2252 | * The following nxm_header values are potentially acceptable as 'dst': | |
2253 | * | |
2254 | * - NXM_OF_ETH_DST | |
2255 | * - NXM_OF_ETH_SRC | |
2256 | * - NXM_OF_IP_TOS | |
2257 | * - NXM_OF_IP_SRC | |
2258 | * - NXM_OF_IP_DST | |
2259 | * - NXM_OF_TCP_SRC | |
2260 | * - NXM_OF_TCP_DST | |
2261 | * - NXM_OF_UDP_SRC | |
2262 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2263 | * - NXM_OF_ICMP_TYPE |
2264 | * - NXM_OF_ICMP_CODE | |
2265 | * - NXM_NX_ICMPV6_TYPE | |
2266 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2267 | * - NXM_NX_ARP_SHA |
2268 | * - NXM_NX_ARP_THA | |
2269 | * - NXM_OF_ARP_OP | |
2270 | * - NXM_OF_ARP_SPA | |
2271 | * - NXM_OF_ARP_TPA | |
2272 | * Modifying any of the above fields changes the corresponding packet | |
2273 | * header. | |
2274 | * | |
2275 | * - NXM_OF_IN_PORT | |
2276 | * | |
2277 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2278 | * | |
2279 | * - NXM_NX_PKT_MARK | |
2280 | * | |
2281 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2282 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2283 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2284 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2285 | * to the field's new value (with the CFI bit masked out). | |
2286 | * | |
2287 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2288 | * any of these values modifies the corresponding tunnel header field used | |
2289 | * for the packet's next tunnel encapsulation, if allowed by the | |
2290 | * configuration of the output tunnel port. | |
2291 | * | |
2292 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2293 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2294 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2295 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2296 | * | |
2297 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2298 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2299 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2300 | * | |
2301 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2302 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2303 | * temporary buffer copied to 'dst'. | |
2304 | */ | |
2305 | struct nx_action_reg_move { | |
2306 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2307 | ovs_be16 len; /* Length is 24. */ | |
2308 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2309 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2310 | ovs_be16 n_bits; /* Number of bits. */ | |
2311 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2312 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2313 | /* Followed by: |
2314 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2315 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2316 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2317 | }; |
bad8a439 | 2318 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2319 | |
73178f20 | 2320 | static enum ofperr |
914624f8 BP |
2321 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2322 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
04f48a68 | 2323 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2324 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
73178f20 | 2325 | { |
0a2869d5 | 2326 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2327 | enum ofperr error; |
2328 | ||
914624f8 BP |
2329 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2330 | move->src.ofs = ntohs(src_offset); | |
2331 | move->src.n_bits = ntohs(n_bits); | |
2332 | move->dst.ofs = ntohs(dst_offset); | |
2333 | move->dst.n_bits = ntohs(n_bits); | |
2334 | ||
0a2869d5 | 2335 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2336 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 | 2337 | |
5c7c16d8 YHW |
2338 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2339 | tlv_bitmap); | |
f13cdd73 BP |
2340 | if (error) { |
2341 | return error; | |
2342 | } | |
5c7c16d8 YHW |
2343 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, |
2344 | tlv_bitmap); | |
f13cdd73 BP |
2345 | if (error) { |
2346 | return error; | |
2347 | } | |
f13cdd73 | 2348 | |
6fd6ed71 | 2349 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2350 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2351 | } | |
2352 | ||
73178f20 BP |
2353 | return nxm_reg_move_check(move, NULL); |
2354 | } | |
2355 | ||
914624f8 BP |
2356 | static enum ofperr |
2357 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2358 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2359 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2360 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2361 | { |
2362 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2363 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2364 | OBJECT_OFFSETOF(oacf, pad2), vl_mff_map, |
5c7c16d8 | 2365 | tlv_bitmap, ofpacts); |
914624f8 BP |
2366 | } |
2367 | ||
2368 | static enum ofperr | |
2369 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
f3cd3ac7 | 2370 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2371 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2372 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2373 | { |
2374 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2375 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2376 | OBJECT_OFFSETOF(oacf, pad3), vl_mff_map, |
5c7c16d8 | 2377 | tlv_bitmap, ofpacts); |
914624f8 BP |
2378 | } |
2379 | ||
c2d936a4 BP |
2380 | static enum ofperr |
2381 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2382 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2383 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2384 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
c2d936a4 | 2385 | { |
0a2869d5 | 2386 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2387 | enum ofperr error; |
2388 | ||
914624f8 | 2389 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2390 | move->src.ofs = ntohs(narm->src_ofs); |
2391 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2392 | move->dst.ofs = ntohs(narm->dst_ofs); |
2393 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2394 | |
0a2869d5 | 2395 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2396 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 | 2397 | |
5c7c16d8 YHW |
2398 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2399 | tlv_bitmap); | |
bad8a439 BP |
2400 | if (error) { |
2401 | return error; | |
2402 | } | |
5c7c16d8 YHW |
2403 | |
2404 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, | |
2405 | tlv_bitmap); | |
bad8a439 BP |
2406 | if (error) { |
2407 | return error; | |
2408 | } | |
04f48a68 | 2409 | |
6fd6ed71 | 2410 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2411 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2412 | } | |
2413 | ||
c2d936a4 BP |
2414 | return nxm_reg_move_check(move, NULL); |
2415 | } | |
d01c980f | 2416 | |
c2d936a4 BP |
2417 | static void |
2418 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2419 | enum ofp_version ofp_version, struct ofpbuf *out) |
2420 | { | |
914624f8 BP |
2421 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2422 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2423 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2424 | * probe for support. Until we have that ability, we currently prefer | |
2425 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2426 | * versions. */ | |
6fd6ed71 | 2427 | size_t start_ofs = out->size; |
73178f20 | 2428 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2429 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2430 | copy->n_bits = htons(move->dst.n_bits); |
2431 | copy->src_offset = htons(move->src.ofs); | |
2432 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2433 | out->size = out->size - sizeof copy->pad2; |
04f48a68 YHW |
2434 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2435 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
914624f8 BP |
2436 | } else if (ofp_version == OFP13_VERSION |
2437 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2438 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2439 | copy->n_bits = htons(move->dst.n_bits); | |
2440 | copy->src_offset = htons(move->src.ofs); | |
2441 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2442 | out->size = out->size - sizeof copy->pad3; |
04f48a68 YHW |
2443 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2444 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
73178f20 | 2445 | } else { |
bad8a439 | 2446 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2447 | narm->n_bits = htons(move->dst.n_bits); |
2448 | narm->src_ofs = htons(move->src.ofs); | |
2449 | narm->dst_ofs = htons(move->dst.ofs); | |
04f48a68 YHW |
2450 | nx_put_mff_header(out, move->src.field, 0, false); |
2451 | nx_put_mff_header(out, move->dst.field, 0, false); | |
73178f20 | 2452 | } |
bad8a439 | 2453 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2454 | } |
e9536ecb | 2455 | |
cab50449 | 2456 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2457 | parse_REG_MOVE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2458 | { |
efefbcae | 2459 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(pp->ofpacts); |
21b2fa61 | 2460 | return nxm_parse_reg_move(move, arg); |
c2d936a4 | 2461 | } |
0f3f3c3d | 2462 | |
c2d936a4 | 2463 | static void |
50f96b10 | 2464 | format_REG_MOVE(const struct ofpact_reg_move *a, |
efefbcae | 2465 | const struct ofpact_format_params *fp) |
c2d936a4 | 2466 | { |
efefbcae | 2467 | nxm_format_reg_move(a, fp->s); |
c2d936a4 BP |
2468 | } |
2469 | \f | |
7eb4b1f1 BP |
2470 | /* Action structure for OFPAT12_SET_FIELD. */ |
2471 | struct ofp12_action_set_field { | |
2472 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2473 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2474 | ||
2475 | /* Followed by: | |
2476 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2477 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2478 | * | |
2479 | * The "pad" member is the beginning of the above. */ | |
2480 | uint8_t pad[4]; | |
2481 | }; | |
2482 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2483 | ||
c2d936a4 BP |
2484 | /* Action structure for NXAST_REG_LOAD. |
2485 | * | |
2486 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2487 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2488 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2489 | * bit, and so on. | |
2490 | * | |
2491 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2492 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2493 | * loading them. | |
2494 | * | |
2495 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2496 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2497 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2498 | * also stored as one less than its true value: | |
2499 | * | |
2500 | * 15 6 5 0 | |
2501 | * +------------------------------+------------------+ | |
2502 | * | ofs | n_bits - 1 | | |
2503 | * +------------------------------+------------------+ | |
2504 | * | |
2505 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2506 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2507 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2508 | * OFPBAC_BAD_ARGUMENT. | |
2509 | */ | |
2510 | struct nx_action_reg_load { | |
2511 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2512 | ovs_be16 len; /* Length is 24. */ | |
2513 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2514 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2515 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2516 | ovs_be32 dst; /* Destination register. */ | |
2517 | ovs_be64 value; /* Immediate value. */ | |
2518 | }; | |
2519 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2520 | |
aad28f47 BP |
2521 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2522 | * followed by: | |
bad8a439 | 2523 | * |
aad28f47 BP |
2524 | * - An NXM/OXM header, value, and optionally a mask. |
2525 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2526 | * | |
2527 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2528 | |
c2d936a4 | 2529 | static enum ofperr |
7eb4b1f1 | 2530 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
04f48a68 | 2531 | bool may_mask, const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2532 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7fdb60a7 | 2533 | { |
0a2869d5 | 2534 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2535 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2536 | |
128684a6 JR |
2537 | union mf_value value, mask; |
2538 | const struct mf_field *field; | |
5c7c16d8 YHW |
2539 | enum ofperr error; |
2540 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, | |
2541 | may_mask ? &mask : NULL, tlv_bitmap); | |
178742f9 | 2542 | if (error) { |
178742f9 BP |
2543 | return (error == OFPERR_OFPBMC_BAD_MASK |
2544 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2545 | : error); | |
c2d936a4 | 2546 | } |
5c7c16d8 | 2547 | |
7eb4b1f1 | 2548 | if (!may_mask) { |
128684a6 | 2549 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2550 | } |
178742f9 | 2551 | |
6fd6ed71 | 2552 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2553 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2554 | } | |
7fdb60a7 | 2555 | |
178742f9 BP |
2556 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2557 | * Set-Field. */ | |
128684a6 | 2558 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2559 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2560 | } |
178742f9 | 2561 | |
c2d936a4 | 2562 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2563 | if (!field->writable) { |
178742f9 | 2564 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2565 | field->name); |
c2d936a4 BP |
2566 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2567 | } | |
c2d936a4 | 2568 | |
d3cb080e | 2569 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2570 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2571 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2572 | if (!mf_is_value_valid(field, &value) |
2573 | || (field->id == MFF_VLAN_VID | |
2574 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2575 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2576 | struct ds ds = DS_EMPTY_INITIALIZER; |
50f96b10 | 2577 | mf_format(field, &value, NULL, NULL, &ds); |
c2d936a4 | 2578 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2579 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2580 | ds_destroy(&ds); |
2581 | ||
2582 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2583 | } |
128684a6 JR |
2584 | |
2585 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2586 | return 0; |
7fdb60a7 SH |
2587 | } |
2588 | ||
7eb4b1f1 BP |
2589 | static enum ofperr |
2590 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2591 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2592 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2593 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2594 | { |
5c7c16d8 YHW |
2595 | return decode_ofpat_set_field(oasf, false, vl_mff_map, tlv_bitmap, |
2596 | ofpacts); | |
7eb4b1f1 BP |
2597 | } |
2598 | ||
2599 | static enum ofperr | |
2600 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2601 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2602 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2603 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2604 | { |
5c7c16d8 | 2605 | return decode_ofpat_set_field(oasf, true, vl_mff_map, tlv_bitmap, ofpacts); |
7eb4b1f1 BP |
2606 | } |
2607 | ||
2608 | static enum ofperr | |
2609 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2610 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2611 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2612 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7eb4b1f1 | 2613 | { |
7eb4b1f1 BP |
2614 | struct mf_subfield dst; |
2615 | enum ofperr error; | |
2616 | ||
7eb4b1f1 BP |
2617 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); |
2618 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
5c7c16d8 YHW |
2619 | error = mf_vl_mff_mf_from_nxm_header(ntohl(narl->dst), vl_mff_map, |
2620 | &dst.field, tlv_bitmap); | |
2621 | if (error) { | |
2622 | return error; | |
04f48a68 YHW |
2623 | } |
2624 | ||
7eb4b1f1 BP |
2625 | error = mf_check_dst(&dst, NULL); |
2626 | if (error) { | |
2627 | return error; | |
2628 | } | |
2629 | ||
2630 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2631 | * narl->value. */ | |
2632 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2633 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2634 | } | |
2635 | ||
128684a6 JR |
2636 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2637 | NULL); | |
7eb4b1f1 | 2638 | bitwise_put(ntohll(narl->value), |
128684a6 | 2639 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2640 | dst.n_bits); |
2641 | bitwise_put(UINT64_MAX, | |
128684a6 | 2642 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2643 | dst.n_bits); |
7eb4b1f1 BP |
2644 | return 0; |
2645 | } | |
2646 | ||
bad8a439 | 2647 | static enum ofperr |
aad28f47 | 2648 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
f3cd3ac7 | 2649 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2650 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2651 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 | 2652 | { |
aad28f47 BP |
2653 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2654 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2655 | |
128684a6 JR |
2656 | union mf_value value, mask; |
2657 | const struct mf_field *field; | |
5c7c16d8 YHW |
2658 | enum ofperr error; |
2659 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, &mask, | |
2660 | tlv_bitmap); | |
bad8a439 BP |
2661 | if (error) { |
2662 | return error; | |
2663 | } | |
5c7c16d8 | 2664 | |
6fd6ed71 | 2665 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2666 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2667 | } | |
2668 | ||
128684a6 JR |
2669 | if (!field->writable) { |
2670 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2671 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2672 | } | |
128684a6 JR |
2673 | |
2674 | /* Put value and mask. */ | |
2675 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2676 | return 0; |
2677 | } | |
2678 | ||
7fdb60a7 | 2679 | static void |
128684a6 JR |
2680 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2681 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2682 | { |
7eb4b1f1 | 2683 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2684 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2685 | size_t start_ofs = openflow->size; |
178742f9 | 2686 | union mf_value value; |
7fdb60a7 | 2687 | |
178742f9 | 2688 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2689 | |
7eb4b1f1 | 2690 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2691 | openflow->size = openflow->size - sizeof oasf->pad; |
04f48a68 | 2692 | nx_put_entry(openflow, mf_from_id(field), ofp_version, &value, NULL); |
178742f9 | 2693 | pad_ofpat(openflow, start_ofs); |
7fdb60a7 SH |
2694 | } |
2695 | ||
4b684612 BP |
2696 | static void |
2697 | put_reg_load(struct ofpbuf *openflow, | |
2698 | const struct mf_subfield *dst, uint64_t value) | |
2699 | { | |
2700 | ovs_assert(dst->n_bits <= 64); | |
2701 | ||
2702 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2703 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
04f48a68 | 2704 | narl->dst = htonl(nxm_header_from_mff(dst->field)); |
4b684612 BP |
2705 | narl->value = htonll(value); |
2706 | } | |
2707 | ||
7eb4b1f1 BP |
2708 | static bool |
2709 | next_load_segment(const struct ofpact_set_field *sf, | |
2710 | struct mf_subfield *dst, uint64_t *value) | |
2711 | { | |
fa078489 BP |
2712 | int n_bits = sf->field->n_bits; |
2713 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2714 | int start = dst->ofs + dst->n_bits; |
2715 | ||
fa078489 | 2716 | if (start < n_bits) { |
7eb4b1f1 | 2717 | dst->field = sf->field; |
128684a6 JR |
2718 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2719 | n_bits); | |
fa078489 | 2720 | if (dst->ofs < n_bits) { |
128684a6 JR |
2721 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2722 | dst->ofs + 1, | |
fa078489 | 2723 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2724 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2725 | return true; |
2726 | } | |
2727 | } | |
2728 | return false; | |
2729 | } | |
178742f9 | 2730 | |
7eb4b1f1 | 2731 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2732 | static void |
c2d936a4 | 2733 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2734 | { |
bad8a439 | 2735 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2736 | * experimenter OXM or is variable length (or if it came in as |
2737 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2738 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2739 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2740 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 2741 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 2742 | size_t start_ofs = openflow->size; |
bad8a439 | 2743 | |
aad28f47 BP |
2744 | eah = put_NXAST_REG_LOAD2(openflow); |
2745 | openflow->size = openflow->size - sizeof eah->pad; | |
04f48a68 | 2746 | nx_put_entry(openflow, sf->field, 0, sf->value, |
128684a6 | 2747 | ofpact_set_field_mask(sf)); |
bad8a439 BP |
2748 | pad_ofpat(openflow, start_ofs); |
2749 | } else { | |
2750 | struct mf_subfield dst; | |
2751 | uint64_t value; | |
7eb4b1f1 | 2752 | |
bad8a439 BP |
2753 | dst.ofs = dst.n_bits = 0; |
2754 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 2755 | put_reg_load(openflow, &dst, value); |
bad8a439 | 2756 | } |
7fdb60a7 SH |
2757 | } |
2758 | } | |
2759 | ||
7eb4b1f1 BP |
2760 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2761 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 2762 | * |
c2d936a4 BP |
2763 | * We check only meta-flow types that can appear within set field actions and |
2764 | * that have a mapping to compatible action types. These struct mf_field | |
2765 | * definitions have a defined OXM or NXM header value and specify the field as | |
2766 | * writable. */ | |
2767 | static void | |
2768 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
2769 | enum ofp_version ofp_version, | |
2770 | struct ofpbuf *out) | |
7fdb60a7 | 2771 | { |
c2d936a4 BP |
2772 | switch ((int) sf->field->id) { |
2773 | case MFF_VLAN_TCI: { | |
128684a6 | 2774 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
2775 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
2776 | uint16_t vid = vlan_tci_to_vid(tci); | |
2777 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
2778 | ||
2779 | if (ofp_version < OFP11_VERSION) { | |
2780 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
2781 | * | |
2782 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2783 | * If CFI=0, strip VLAN header, if any. | |
2784 | */ | |
2785 | if (cfi) { | |
2786 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2787 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
2788 | } else { | |
2789 | put_OFPAT10_STRIP_VLAN(out); | |
2790 | } | |
2791 | } else { | |
2792 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
2793 | * | |
2794 | * If CFI=1, Add or modify VLAN VID & PCP. | |
2795 | * OpenFlow 1.1 set actions only apply if the packet | |
2796 | * already has VLAN tags. To be sure that is the case | |
2797 | * we have to push a VLAN header. As we do not support | |
2798 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
2799 | * header already exists. This may backfire, however, | |
2800 | * when we start supporting multiple layers of VLANs. | |
2801 | * If CFI=0, strip VLAN header, if any. | |
2802 | */ | |
2803 | if (cfi) { | |
2804 | /* Push a VLAN tag, if one was not seen at action validation | |
2805 | * time. */ | |
2806 | if (!sf->flow_has_vlan) { | |
2807 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
2808 | } | |
2809 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2810 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
2811 | } else { | |
2812 | /* If the flow did not match on vlan, we have no way of | |
2813 | * knowing if the vlan tag exists, so we must POP just to be | |
2814 | * sure. */ | |
2815 | put_OFPAT11_POP_VLAN(out); | |
2816 | } | |
2817 | } | |
2818 | break; | |
2819 | } | |
7fdb60a7 | 2820 | |
c2d936a4 | 2821 | case MFF_VLAN_VID: { |
128684a6 | 2822 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
2823 | if (ofp_version == OFP10_VERSION) { |
2824 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
2825 | } else { | |
2826 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
2827 | } | |
2828 | break; | |
2829 | } | |
2830 | ||
2831 | case MFF_VLAN_PCP: | |
2832 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 2833 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 2834 | } else { |
128684a6 | 2835 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
2836 | } |
2837 | break; | |
2838 | ||
2839 | case MFF_ETH_SRC: | |
128684a6 | 2840 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2841 | break; |
2842 | ||
2843 | case MFF_ETH_DST: | |
128684a6 | 2844 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
2845 | break; |
2846 | ||
2847 | case MFF_IPV4_SRC: | |
128684a6 | 2848 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2849 | break; |
2850 | ||
2851 | case MFF_IPV4_DST: | |
128684a6 | 2852 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
2853 | break; |
2854 | ||
2855 | case MFF_IP_DSCP: | |
128684a6 | 2856 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
2857 | break; |
2858 | ||
2859 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 2860 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
2861 | break; |
2862 | ||
1a1e1a49 EG |
2863 | case MFF_IP_ECN: { |
2864 | struct ofpact_ecn ip_ecn = { .ecn = sf->value->u8 }; | |
2865 | encode_SET_IP_ECN(&ip_ecn, ofp_version, out); | |
4b684612 | 2866 | break; |
1a1e1a49 | 2867 | } |
4b684612 | 2868 | |
c2d936a4 BP |
2869 | case MFF_TCP_SRC: |
2870 | case MFF_UDP_SRC: | |
128684a6 | 2871 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
2872 | break; |
2873 | ||
2874 | case MFF_TCP_DST: | |
2875 | case MFF_UDP_DST: | |
128684a6 | 2876 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
2877 | break; |
2878 | ||
2879 | default: | |
2880 | set_field_to_nxast(sf, out); | |
2881 | break; | |
7fdb60a7 SH |
2882 | } |
2883 | } | |
2884 | ||
7eb4b1f1 BP |
2885 | static void |
2886 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
2887 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2888 | { | |
2889 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 2890 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
2891 | |
2892 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 2893 | out->size = out->size - sizeof oasf->pad; |
04f48a68 | 2894 | nx_put_entry(out, sf->field, ofp_version, sf->value, |
128684a6 | 2895 | ofpact_set_field_mask(sf)); |
7eb4b1f1 BP |
2896 | pad_ofpat(out, start_ofs); |
2897 | } | |
2898 | ||
c2d936a4 BP |
2899 | static void |
2900 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
2901 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2902 | { | |
7eb4b1f1 | 2903 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
2904 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
2905 | * entirely). */ | |
7eb4b1f1 | 2906 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
2907 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
2908 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
2909 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
2910 | set_field_to_nxast(sf, out); |
2911 | } else if (ofp_version < OFP12_VERSION) { | |
2912 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 2913 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 2914 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
2915 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
2916 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
2917 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 2918 | } else { |
7eb4b1f1 BP |
2919 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
2920 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
2921 | * so encode it as reg_load. */ | |
2922 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
2923 | } |
2924 | } | |
2925 | ||
36b43aa6 JS |
2926 | /* Parses the input argument 'arg' into the key, value, and delimiter |
2927 | * components that are common across the reg_load and set_field action format. | |
2928 | * | |
2929 | * With an argument like "1->metadata", sets the following pointers to | |
2930 | * point within 'arg': | |
2931 | * key: "metadata" | |
2932 | * value: "1" | |
2933 | * delim: "->" | |
2934 | * | |
2935 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2936 | * error. The caller is responsible for freeing the returned string. */ | |
2937 | static char * OVS_WARN_UNUSED_RESULT | |
2938 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
2939 | { | |
2940 | char *value_end; | |
2941 | ||
2942 | *value = arg; | |
2943 | value_end = strstr(arg, "->"); | |
2944 | *key = value_end + strlen("->"); | |
2945 | if (delim) { | |
2946 | *delim = value_end; | |
2947 | } | |
2948 | ||
2949 | if (!value_end) { | |
2950 | return xasprintf("%s: missing `->'", arg); | |
2951 | } | |
2952 | if (strlen(value_end) <= strlen("->")) { | |
2953 | return xasprintf("%s: missing field name following `->'", arg); | |
2954 | } | |
2955 | ||
2956 | return NULL; | |
2957 | } | |
2958 | ||
c2d936a4 | 2959 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
efefbcae | 2960 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
2961 | * |
2962 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
2963 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 2964 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2965 | set_field_parse__(char *arg, const struct ofpact_parse_params *pp) |
7fdb60a7 | 2966 | { |
c2d936a4 BP |
2967 | char *value; |
2968 | char *delim; | |
2969 | char *key; | |
2970 | const struct mf_field *mf; | |
128684a6 | 2971 | union mf_value sf_value, sf_mask; |
c2d936a4 | 2972 | char *error; |
7fdb60a7 | 2973 | |
36b43aa6 JS |
2974 | error = set_field_split_str(arg, &key, &value, &delim); |
2975 | if (error) { | |
2976 | return error; | |
c2d936a4 | 2977 | } |
e3f8f887 | 2978 | |
c2d936a4 BP |
2979 | mf = mf_from_name(key); |
2980 | if (!mf) { | |
2981 | return xasprintf("%s is not a valid OXM field name", key); | |
2982 | } | |
2983 | if (!mf->writable) { | |
2984 | return xasprintf("%s is read-only", key); | |
2985 | } | |
128684a6 | 2986 | |
c2d936a4 | 2987 | delim[0] = '\0'; |
efefbcae | 2988 | error = mf_parse(mf, value, pp->port_map, &sf_value, &sf_mask); |
7fdb60a7 SH |
2989 | if (error) { |
2990 | return error; | |
2991 | } | |
2992 | ||
128684a6 | 2993 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 2994 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
2995 | } |
2996 | ||
efefbcae | 2997 | *pp->usable_protocols &= mf->usable_protocols_exact; |
128684a6 | 2998 | |
efefbcae | 2999 | ofpact_put_set_field(pp->ofpacts, mf, &sf_value, &sf_mask); |
c2d936a4 | 3000 | return NULL; |
7fdb60a7 SH |
3001 | } |
3002 | ||
c2d936a4 | 3003 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
efefbcae | 3004 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3005 | * |
3006 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3007 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3008 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3009 | parse_SET_FIELD(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3010 | { |
3011 | char *copy = xstrdup(arg); | |
efefbcae | 3012 | char *error = set_field_parse__(copy, pp); |
c2d936a4 BP |
3013 | free(copy); |
3014 | return error; | |
3015 | } | |
a359d5ad | 3016 | |
cab50449 | 3017 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3018 | parse_reg_load(char *arg, const struct ofpact_parse_params *pp) |
7eb4b1f1 | 3019 | { |
7eb4b1f1 | 3020 | struct mf_subfield dst; |
36b43aa6 | 3021 | char *key, *value_str; |
81270993 | 3022 | union mf_value value; |
7eb4b1f1 BP |
3023 | char *error; |
3024 | ||
36b43aa6 JS |
3025 | error = set_field_split_str(arg, &key, &value_str, NULL); |
3026 | if (error) { | |
3027 | return error; | |
7eb4b1f1 | 3028 | } |
36b43aa6 JS |
3029 | |
3030 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
3031 | if (error) { |
3032 | return error; | |
3033 | } | |
3034 | ||
81270993 JS |
3035 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
3036 | &key)) { | |
3037 | return xasprintf("%s: cannot parse integer value", arg); | |
3038 | } | |
3039 | ||
3040 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
3041 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
3042 | struct ds ds; | |
3043 | ||
3044 | ds_init(&ds); | |
50f96b10 | 3045 | mf_format(dst.field, &value, NULL, NULL, &ds); |
81270993 JS |
3046 | error = xasprintf("%s: value %s does not fit into %d bits", |
3047 | arg, ds_cstr(&ds), dst.n_bits); | |
3048 | ds_destroy(&ds); | |
3049 | return error; | |
7eb4b1f1 BP |
3050 | } |
3051 | ||
efefbcae BP |
3052 | struct ofpact_set_field *sf = ofpact_put_reg_load(pp->ofpacts, dst.field, |
3053 | NULL, NULL); | |
81270993 | 3054 | |
128684a6 JR |
3055 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
3056 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
3057 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
3058 | dst.n_bits); | |
7eb4b1f1 BP |
3059 | return NULL; |
3060 | } | |
3061 | ||
c2d936a4 | 3062 | static void |
50f96b10 | 3063 | format_SET_FIELD(const struct ofpact_set_field *a, |
efefbcae | 3064 | const struct ofpact_format_params *fp) |
c2d936a4 | 3065 | { |
7eb4b1f1 BP |
3066 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
3067 | struct mf_subfield dst; | |
3068 | uint64_t value; | |
3069 | ||
3070 | dst.ofs = dst.n_bits = 0; | |
3071 | while (next_load_segment(a, &dst, &value)) { | |
efefbcae | 3072 | ds_put_format(fp->s, "%sload:%s%#"PRIx64"%s->%s", |
b1c5bf1f QM |
3073 | colors.special, colors.end, value, |
3074 | colors.special, colors.end); | |
efefbcae BP |
3075 | mf_format_subfield(&dst, fp->s); |
3076 | ds_put_char(fp->s, ','); | |
7eb4b1f1 | 3077 | } |
efefbcae | 3078 | ds_chomp(fp->s, ','); |
7eb4b1f1 | 3079 | } else { |
efefbcae BP |
3080 | ds_put_format(fp->s, "%sset_field:%s", colors.special, colors.end); |
3081 | mf_format(a->field, a->value, ofpact_set_field_mask(a), | |
3082 | fp->port_map, fp->s); | |
3083 | ds_put_format(fp->s, "%s->%s%s", | |
b1c5bf1f | 3084 | colors.special, colors.end, a->field->name); |
7eb4b1f1 BP |
3085 | } |
3086 | } | |
3087 | ||
128684a6 JR |
3088 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
3089 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
3090 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
3091 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3092 | struct ofpact_set_field * | |
3093 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3094 | const void *value, const void *mask) | |
3095 | { | |
3096 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3097 | sf->field = field; | |
3098 | ||
3099 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3100 | * caller may fill in the value and mask itself. */ | |
3101 | if (value) { | |
3102 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3103 | sf = ofpacts->header; | |
3104 | memcpy(sf->value, value, field->n_bytes); | |
3105 | if (mask) { | |
3106 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3107 | } else { | |
3108 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3109 | } | |
3110 | } else { | |
3111 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3112 | sf = ofpacts->header; | |
3113 | } | |
3114 | /* Update length. */ | |
3115 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3116 | ||
3117 | return sf; | |
3118 | } | |
3119 | ||
7eb4b1f1 BP |
3120 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3121 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3122 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3123 | * that was the way that the action was expressed when it came into OVS or for | |
3124 | * backward compatibility. */ | |
3125 | struct ofpact_set_field * | |
128684a6 JR |
3126 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3127 | const void *value, const void *mask) | |
7eb4b1f1 | 3128 | { |
128684a6 JR |
3129 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3130 | mask); | |
7eb4b1f1 | 3131 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3132 | |
7eb4b1f1 | 3133 | return sf; |
c2d936a4 | 3134 | } |
128684a6 JR |
3135 | |
3136 | struct ofpact_set_field * | |
3137 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3138 | const void *value, const void *mask) | |
3139 | { | |
3140 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3141 | mask); | |
3142 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3143 | ||
3144 | return sf; | |
3145 | } | |
3146 | ||
c2d936a4 BP |
3147 | \f |
3148 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3149 | * | |
3150 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3151 | * top of the stack. | |
3152 | */ | |
3153 | struct nx_action_stack { | |
3154 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3155 | ovs_be16 len; /* Length is 16. */ | |
3156 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3157 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3158 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3159 | /* Followed by: |
3160 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3161 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3162 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3163 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3164 | }; |
c2d936a4 | 3165 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3166 | |
bad8a439 | 3167 | static enum ofperr |
c2d936a4 | 3168 | decode_stack_action(const struct nx_action_stack *nasp, |
5c7c16d8 | 3169 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
c2d936a4 | 3170 | struct ofpact_stack *stack_action) |
a359d5ad | 3171 | { |
5c7c16d8 | 3172 | enum ofperr error; |
c2d936a4 | 3173 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3174 | |
0a2869d5 | 3175 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3176 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
5c7c16d8 YHW |
3177 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, |
3178 | &stack_action->subfield.field, NULL, | |
3179 | tlv_bitmap); | |
bad8a439 BP |
3180 | if (error) { |
3181 | return error; | |
3182 | } | |
5c7c16d8 | 3183 | |
6fd6ed71 | 3184 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3185 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3186 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3187 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3188 | } | |
3189 | ||
3190 | return 0; | |
a359d5ad IY |
3191 | } |
3192 | ||
c2d936a4 BP |
3193 | static enum ofperr |
3194 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3195 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3196 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3197 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
a359d5ad | 3198 | { |
c2d936a4 | 3199 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
5c7c16d8 YHW |
3200 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3201 | push); | |
bad8a439 | 3202 | return error ? error : nxm_stack_push_check(push, NULL); |
a359d5ad IY |
3203 | } |
3204 | ||
c2d936a4 BP |
3205 | static enum ofperr |
3206 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3207 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3208 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3209 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
084c53de | 3210 | { |
c2d936a4 | 3211 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
5c7c16d8 YHW |
3212 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3213 | pop); | |
bad8a439 | 3214 | return error ? error : nxm_stack_pop_check(pop, NULL); |
084c53de BP |
3215 | } |
3216 | ||
c2d936a4 BP |
3217 | static void |
3218 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3219 | struct nx_action_stack *nasp) | |
c0621c39 | 3220 | { |
bad8a439 BP |
3221 | struct ofpbuf b; |
3222 | ovs_be16 n_bits; | |
3223 | ||
c2d936a4 | 3224 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3225 | |
3226 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3227 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
04f48a68 | 3228 | nx_put_mff_header(&b, stack_action->subfield.field, 0, false); |
bad8a439 BP |
3229 | n_bits = htons(stack_action->subfield.n_bits); |
3230 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3231 | } |
3232 | ||
c2d936a4 BP |
3233 | static void |
3234 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3235 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3236 | { | |
3237 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3238 | } | |
8e97815e | 3239 | |
c2d936a4 BP |
3240 | static void |
3241 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3242 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3243 | { |
c2d936a4 BP |
3244 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3245 | } | |
8e97815e | 3246 | |
cab50449 | 3247 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3248 | parse_STACK_PUSH(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3249 | { |
efefbcae | 3250 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(pp->ofpacts), arg); |
c2d936a4 | 3251 | } |
8e97815e | 3252 | |
cab50449 | 3253 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3254 | parse_STACK_POP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3255 | { |
efefbcae | 3256 | return nxm_parse_stack_action(ofpact_put_STACK_POP(pp->ofpacts), arg); |
8e97815e BP |
3257 | } |
3258 | ||
c2d936a4 | 3259 | static void |
50f96b10 | 3260 | format_STACK_PUSH(const struct ofpact_stack *a, |
efefbcae | 3261 | const struct ofpact_format_params *fp) |
8e97815e | 3262 | { |
efefbcae | 3263 | nxm_format_stack_push(a, fp->s); |
c2d936a4 | 3264 | } |
8e97815e | 3265 | |
c2d936a4 | 3266 | static void |
50f96b10 | 3267 | format_STACK_POP(const struct ofpact_stack *a, |
efefbcae | 3268 | const struct ofpact_format_params *fp) |
c2d936a4 | 3269 | { |
efefbcae | 3270 | nxm_format_stack_pop(a, fp->s); |
c2d936a4 BP |
3271 | } |
3272 | \f | |
3273 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3274 | * | |
3275 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3276 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3277 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3278 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3279 | * | |
3280 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3281 | * sent only to controllers with id 0.) | |
3282 | */ | |
3283 | struct nx_action_cnt_ids { | |
3284 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3285 | ovs_be16 len; /* Length including slaves. */ | |
3286 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3287 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3288 | ||
3289 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3290 | uint8_t zeros[4]; /* Must be zero. */ | |
3291 | ||
3292 | /* Followed by 1 or more controller ids. | |
3293 | * | |
3294 | * uint16_t cnt_ids[]; // Controller ids. | |
3295 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3296 | */ | |
3297 | }; | |
3298 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3299 | ||
3300 | static enum ofperr | |
3301 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3302 | { | |
3303 | uint16_t id = 0; | |
3304 | struct ofpact_cnt_ids *ids; | |
3305 | enum ofperr error = 0; | |
3306 | ||
3307 | ids = ofpact_put_DEC_TTL(out); | |
3308 | ids->n_controllers = 1; | |
3309 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3310 | ids = out->header; |
ce058104 | 3311 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3312 | return error; |
3313 | } | |
3314 | ||
3315 | static enum ofperr | |
3316 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3317 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3318 | struct ofpbuf *out) |
3319 | { | |
3320 | struct ofpact_cnt_ids *ids; | |
3321 | size_t ids_size; | |
3322 | int i; | |
3323 | ||
3324 | ids = ofpact_put_DEC_TTL(out); | |
3325 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3326 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3327 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3328 | ||
3329 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3330 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3331 | } |
c2d936a4 BP |
3332 | |
3333 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3334 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3335 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
fd13c6b5 | 3336 | "are required for %u controllers.", |
c2d936a4 BP |
3337 | ids_size, ids->n_controllers * sizeof(ovs_be16), |
3338 | ids->n_controllers); | |
3339 | return OFPERR_OFPBAC_BAD_LEN; | |
3340 | } | |
3341 | ||
3342 | for (i = 0; i < ids->n_controllers; i++) { | |
3343 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3344 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3345 | ids = out->header; |
c2d936a4 BP |
3346 | } |
3347 | ||
ce058104 | 3348 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3349 | |
3350 | return 0; | |
8e97815e BP |
3351 | } |
3352 | ||
c2d936a4 BP |
3353 | static void |
3354 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3355 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3356 | { |
c2d936a4 BP |
3357 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3358 | || dec_ttl->n_controllers != 1 | |
3359 | || dec_ttl->cnt_ids[0] != 0) { | |
3360 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3361 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3362 | ovs_be16 *ids; | |
3363 | size_t i; | |
8e97815e | 3364 | |
c2d936a4 BP |
3365 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3366 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3367 | ||
3368 | ids = ofpbuf_put_zeros(out, ids_len); | |
3369 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3370 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3371 | } |
c2d936a4 BP |
3372 | } else { |
3373 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3374 | } |
8e97815e BP |
3375 | } |
3376 | ||
c2d936a4 | 3377 | static void |
efefbcae | 3378 | parse_noargs_dec_ttl(const struct ofpact_parse_params *pp) |
d01c980f | 3379 | { |
c2d936a4 BP |
3380 | struct ofpact_cnt_ids *ids; |
3381 | uint16_t id = 0; | |
3382 | ||
efefbcae BP |
3383 | ofpact_put_DEC_TTL(pp->ofpacts); |
3384 | ofpbuf_put(pp->ofpacts, &id, sizeof id); | |
3385 | ids = pp->ofpacts->header; | |
c2d936a4 | 3386 | ids->n_controllers++; |
efefbcae | 3387 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
d01c980f BP |
3388 | } |
3389 | ||
cab50449 | 3390 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3391 | parse_DEC_TTL(char *arg, const struct ofpact_parse_params *pp) |
d01c980f | 3392 | { |
c2d936a4 | 3393 | if (*arg == '\0') { |
efefbcae | 3394 | parse_noargs_dec_ttl(pp); |
c2d936a4 BP |
3395 | } else { |
3396 | struct ofpact_cnt_ids *ids; | |
3397 | char *cntr; | |
3398 | ||
efefbcae | 3399 | ids = ofpact_put_DEC_TTL(pp->ofpacts); |
c2d936a4 BP |
3400 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; |
3401 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3402 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3403 | uint16_t id = atoi(cntr); | |
3404 | ||
efefbcae BP |
3405 | ofpbuf_put(pp->ofpacts, &id, sizeof id); |
3406 | ids = pp->ofpacts->header; | |
c2d936a4 BP |
3407 | ids->n_controllers++; |
3408 | } | |
3409 | if (!ids->n_controllers) { | |
3410 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3411 | "id."); | |
3412 | } | |
efefbcae | 3413 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
c2d936a4 BP |
3414 | } |
3415 | return NULL; | |
d01c980f BP |
3416 | } |
3417 | ||
c2d936a4 | 3418 | static void |
50f96b10 | 3419 | format_DEC_TTL(const struct ofpact_cnt_ids *a, |
efefbcae | 3420 | const struct ofpact_format_params *fp) |
d01c980f | 3421 | { |
c2d936a4 | 3422 | size_t i; |
d01c980f | 3423 | |
efefbcae | 3424 | ds_put_format(fp->s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3425 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
efefbcae | 3426 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3427 | for (i = 0; i < a->n_controllers; i++) { |
3428 | if (i) { | |
efefbcae | 3429 | ds_put_cstr(fp->s, ","); |
d01c980f | 3430 | } |
efefbcae | 3431 | ds_put_format(fp->s, "%"PRIu16, a->cnt_ids[i]); |
c2d936a4 | 3432 | } |
efefbcae | 3433 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3434 | } |
3435 | } | |
c2d936a4 BP |
3436 | \f |
3437 | /* Set MPLS label actions. */ | |
d01c980f BP |
3438 | |
3439 | static enum ofperr | |
f3cd3ac7 JS |
3440 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3441 | enum ofp_version ofp_version OVS_UNUSED, | |
3442 | struct ofpbuf *out) | |
d01c980f | 3443 | { |
c2d936a4 BP |
3444 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3445 | return 0; | |
3446 | } | |
d01c980f | 3447 | |
c2d936a4 BP |
3448 | static void |
3449 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3450 | enum ofp_version ofp_version, | |
3451 | struct ofpbuf *out) | |
3452 | { | |
3453 | if (ofp_version < OFP12_VERSION) { | |
3454 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3455 | } else { | |
128684a6 | 3456 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3457 | } |
c2d936a4 | 3458 | } |
d01c980f | 3459 | |
cab50449 | 3460 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3461 | parse_SET_MPLS_LABEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3462 | { |
efefbcae BP |
3463 | struct ofpact_mpls_label *mpls_label |
3464 | = ofpact_put_SET_MPLS_LABEL(pp->ofpacts); | |
c2d936a4 BP |
3465 | if (*arg == '\0') { |
3466 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3467 | } |
c2d936a4 BP |
3468 | |
3469 | mpls_label->label = htonl(atoi(arg)); | |
3470 | return NULL; | |
d01c980f BP |
3471 | } |
3472 | ||
3473 | static void | |
50f96b10 | 3474 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, |
efefbcae | 3475 | const struct ofpact_format_params *fp) |
d01c980f | 3476 | { |
efefbcae | 3477 | ds_put_format(fp->s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
b1c5bf1f QM |
3478 | colors.paren, colors.end, ntohl(a->label), |
3479 | colors.paren, colors.end); | |
d01c980f | 3480 | } |
c2d936a4 BP |
3481 | \f |
3482 | /* Set MPLS TC actions. */ | |
d01c980f | 3483 | |
c2d936a4 | 3484 | static enum ofperr |
f3cd3ac7 JS |
3485 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3486 | enum ofp_version ofp_version OVS_UNUSED, | |
3487 | struct ofpbuf *out) | |
d01c980f | 3488 | { |
c2d936a4 BP |
3489 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3490 | return 0; | |
3491 | } | |
d01c980f | 3492 | |
c2d936a4 BP |
3493 | static void |
3494 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3495 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3496 | { | |
3497 | if (ofp_version < OFP12_VERSION) { | |
3498 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3499 | } else { | |
128684a6 | 3500 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3501 | } |
c2d936a4 | 3502 | } |
8f2cded4 | 3503 | |
cab50449 | 3504 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3505 | parse_SET_MPLS_TC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3506 | { |
efefbcae | 3507 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(pp->ofpacts); |
d01c980f | 3508 | |
c2d936a4 BP |
3509 | if (*arg == '\0') { |
3510 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3511 | } |
3512 | ||
c2d936a4 BP |
3513 | mpls_tc->tc = atoi(arg); |
3514 | return NULL; | |
3515 | } | |
d01c980f | 3516 | |
c2d936a4 | 3517 | static void |
50f96b10 | 3518 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, |
efefbcae | 3519 | const struct ofpact_format_params *fp) |
c2d936a4 | 3520 | { |
efefbcae | 3521 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3522 | colors.paren, colors.end, a->tc, |
3523 | colors.paren, colors.end); | |
c2d936a4 BP |
3524 | } |
3525 | \f | |
3526 | /* Set MPLS TTL actions. */ | |
d01c980f | 3527 | |
c2d936a4 | 3528 | static enum ofperr |
f3cd3ac7 JS |
3529 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3530 | enum ofp_version ofp_version OVS_UNUSED, | |
3531 | struct ofpbuf *out) | |
c2d936a4 BP |
3532 | { |
3533 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3534 | return 0; | |
3535 | } | |
638a19b0 | 3536 | |
c2d936a4 BP |
3537 | static void |
3538 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3539 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3540 | { | |
3541 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3542 | } | |
638a19b0 | 3543 | |
c2d936a4 | 3544 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
efefbcae | 3545 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3546 | * |
3547 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3548 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3549 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3550 | parse_SET_MPLS_TTL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3551 | { |
efefbcae | 3552 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(pp->ofpacts); |
d01c980f | 3553 | |
c2d936a4 BP |
3554 | if (*arg == '\0') { |
3555 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3556 | } |
7fdb60a7 | 3557 | |
c2d936a4 BP |
3558 | mpls_ttl->ttl = atoi(arg); |
3559 | return NULL; | |
3560 | } | |
4cceacb9 | 3561 | |
c2d936a4 | 3562 | static void |
50f96b10 | 3563 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, |
efefbcae | 3564 | const struct ofpact_format_params *fp) |
c2d936a4 | 3565 | { |
efefbcae | 3566 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3567 | colors.paren, colors.end, a->ttl, |
3568 | colors.paren, colors.end); | |
c2d936a4 BP |
3569 | } |
3570 | \f | |
3571 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3572 | |
c2d936a4 BP |
3573 | static enum ofperr |
3574 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3575 | { | |
3576 | ofpact_put_DEC_MPLS_TTL(out); | |
3577 | return 0; | |
3578 | } | |
8dd54666 | 3579 | |
c2d936a4 BP |
3580 | static void |
3581 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3582 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3583 | { | |
3584 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3585 | } | |
3586 | ||
cab50449 | 3587 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3588 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 3589 | { |
efefbcae | 3590 | ofpact_put_DEC_MPLS_TTL(pp->ofpacts); |
c2d936a4 BP |
3591 | return NULL; |
3592 | } | |
3593 | ||
3594 | static void | |
50f96b10 | 3595 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 3596 | const struct ofpact_format_params *fp) |
c2d936a4 | 3597 | { |
efefbcae | 3598 | ds_put_format(fp->s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 BP |
3599 | } |
3600 | \f | |
3601 | /* Push MPLS label action. */ | |
3602 | ||
3603 | static enum ofperr | |
f3cd3ac7 JS |
3604 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3605 | enum ofp_version ofp_version OVS_UNUSED, | |
3606 | struct ofpbuf *out) | |
c2d936a4 BP |
3607 | { |
3608 | struct ofpact_push_mpls *oam; | |
3609 | ||
3610 | if (!eth_type_mpls(ethertype)) { | |
3611 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3612 | } |
c2d936a4 BP |
3613 | oam = ofpact_put_PUSH_MPLS(out); |
3614 | oam->ethertype = ethertype; | |
d01c980f | 3615 | |
c2d936a4 BP |
3616 | return 0; |
3617 | } | |
3618 | ||
3619 | static void | |
3620 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3621 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3622 | { | |
3623 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3624 | } | |
3625 | ||
cab50449 | 3626 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3627 | parse_PUSH_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3628 | { |
3629 | uint16_t ethertype; | |
3630 | char *error; | |
3631 | ||
3632 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3633 | if (!error) { | |
efefbcae | 3634 | ofpact_put_PUSH_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
d01c980f BP |
3635 | } |
3636 | return error; | |
3637 | } | |
c2d936a4 BP |
3638 | |
3639 | static void | |
50f96b10 | 3640 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, |
efefbcae | 3641 | const struct ofpact_format_params *fp) |
c2d936a4 | 3642 | { |
efefbcae | 3643 | ds_put_format(fp->s, "%spush_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 3644 | colors.param, colors.end, ntohs(a->ethertype)); |
c2d936a4 | 3645 | } |
d01c980f | 3646 | \f |
c2d936a4 BP |
3647 | /* Pop MPLS label action. */ |
3648 | ||
3649 | static enum ofperr | |
f3cd3ac7 JS |
3650 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3651 | enum ofp_version ofp_version OVS_UNUSED, | |
3652 | struct ofpbuf *out) | |
57ad4e9e | 3653 | { |
c2d936a4 BP |
3654 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3655 | return 0; | |
3656 | } | |
57ad4e9e | 3657 | |
c2d936a4 BP |
3658 | static void |
3659 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
3660 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3661 | { | |
3662 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
3663 | } | |
3664 | ||
cab50449 | 3665 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3666 | parse_POP_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3667 | { |
3668 | uint16_t ethertype; | |
3669 | char *error; | |
3670 | ||
3671 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
3672 | if (!error) { | |
efefbcae | 3673 | ofpact_put_POP_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
57ad4e9e | 3674 | } |
c2d936a4 | 3675 | return error; |
57ad4e9e BP |
3676 | } |
3677 | ||
ba2fe8e9 | 3678 | static void |
50f96b10 | 3679 | format_POP_MPLS(const struct ofpact_pop_mpls *a, |
efefbcae | 3680 | const struct ofpact_format_params *fp) |
ba2fe8e9 | 3681 | { |
efefbcae | 3682 | ds_put_format(fp->s, "%spop_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 3683 | colors.param, colors.end, ntohs(a->ethertype)); |
ba2fe8e9 | 3684 | } |
c2d936a4 BP |
3685 | \f |
3686 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 3687 | |
f25d0cf3 | 3688 | static enum ofperr |
f3cd3ac7 JS |
3689 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
3690 | enum ofp_version ofp_version OVS_UNUSED, | |
3691 | struct ofpbuf *out) | |
f25d0cf3 | 3692 | { |
c2d936a4 BP |
3693 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
3694 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
3695 | tunnel->tun_id = tun_id; | |
3696 | return 0; | |
3697 | } | |
f25d0cf3 | 3698 | |
c2d936a4 | 3699 | static enum ofperr |
f3cd3ac7 JS |
3700 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
3701 | enum ofp_version ofp_version OVS_UNUSED, | |
3702 | struct ofpbuf *out) | |
c2d936a4 BP |
3703 | { |
3704 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
3705 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
3706 | tunnel->tun_id = tun_id; | |
3707 | return 0; | |
3708 | } | |
f25d0cf3 | 3709 | |
c2d936a4 BP |
3710 | static void |
3711 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
3712 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3713 | { | |
3714 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 3715 | |
c2d936a4 BP |
3716 | if (ofp_version < OFP12_VERSION) { |
3717 | if (tun_id <= UINT32_MAX | |
3718 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
3719 | put_NXAST_SET_TUNNEL(out, tun_id); | |
3720 | } else { | |
3721 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 3722 | } |
c2d936a4 | 3723 | } else { |
128684a6 | 3724 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
3725 | } |
3726 | } | |
f25d0cf3 | 3727 | |
cab50449 | 3728 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
3729 | parse_set_tunnel(char *arg, enum ofp_raw_action_type raw, |
3730 | const struct ofpact_parse_params *pp) | |
c2d936a4 BP |
3731 | { |
3732 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 3733 | |
efefbcae | 3734 | tunnel = ofpact_put_SET_TUNNEL(pp->ofpacts); |
c2d936a4 BP |
3735 | tunnel->ofpact.raw = raw; |
3736 | return str_to_u64(arg, &tunnel->tun_id); | |
3737 | } | |
8621547c | 3738 | |
cab50449 | 3739 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3740 | parse_SET_TUNNEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3741 | { |
efefbcae | 3742 | return parse_set_tunnel(arg, NXAST_RAW_SET_TUNNEL, pp); |
c2d936a4 | 3743 | } |
8621547c | 3744 | |
c2d936a4 | 3745 | static void |
50f96b10 | 3746 | format_SET_TUNNEL(const struct ofpact_tunnel *a, |
efefbcae | 3747 | const struct ofpact_format_params *fp) |
c2d936a4 | 3748 | { |
efefbcae | 3749 | ds_put_format(fp->s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
3750 | (a->tun_id > UINT32_MAX |
3751 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 3752 | colors.end, a->tun_id); |
c2d936a4 BP |
3753 | } |
3754 | \f | |
3755 | /* Set queue action. */ | |
8621547c | 3756 | |
c2d936a4 | 3757 | static enum ofperr |
f3cd3ac7 JS |
3758 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
3759 | enum ofp_version ofp_version OVS_UNUSED, | |
3760 | struct ofpbuf *out) | |
c2d936a4 BP |
3761 | { |
3762 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
3763 | return 0; | |
3764 | } | |
8621547c | 3765 | |
c2d936a4 BP |
3766 | static void |
3767 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
3768 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3769 | { | |
3770 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
3771 | } | |
8621547c | 3772 | |
cab50449 | 3773 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3774 | parse_SET_QUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3775 | { |
efefbcae | 3776 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(pp->ofpacts)->queue_id); |
c2d936a4 | 3777 | } |
8621547c | 3778 | |
c2d936a4 | 3779 | static void |
50f96b10 | 3780 | format_SET_QUEUE(const struct ofpact_queue *a, |
efefbcae | 3781 | const struct ofpact_format_params *fp) |
c2d936a4 | 3782 | { |
efefbcae | 3783 | ds_put_format(fp->s, "%sset_queue:%s%"PRIu32, |
b1c5bf1f | 3784 | colors.param, colors.end, a->queue_id); |
c2d936a4 BP |
3785 | } |
3786 | \f | |
3787 | /* Pop queue action. */ | |
1e7db674 | 3788 | |
c2d936a4 BP |
3789 | static enum ofperr |
3790 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
3791 | { | |
3792 | ofpact_put_POP_QUEUE(out); | |
3793 | return 0; | |
3794 | } | |
f25d0cf3 | 3795 | |
c2d936a4 BP |
3796 | static void |
3797 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
3798 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3799 | { | |
3800 | put_NXAST_POP_QUEUE(out); | |
3801 | } | |
f25d0cf3 | 3802 | |
cab50449 | 3803 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 3804 | parse_POP_QUEUE(const char *arg OVS_UNUSED, |
efefbcae | 3805 | const struct ofpact_parse_params *pp) |
c2d936a4 | 3806 | { |
efefbcae | 3807 | ofpact_put_POP_QUEUE(pp->ofpacts); |
c2d936a4 BP |
3808 | return NULL; |
3809 | } | |
f25d0cf3 | 3810 | |
c2d936a4 | 3811 | static void |
50f96b10 | 3812 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 3813 | const struct ofpact_format_params *fp) |
c2d936a4 | 3814 | { |
efefbcae | 3815 | ds_put_format(fp->s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 BP |
3816 | } |
3817 | \f | |
3818 | /* Action structure for NXAST_FIN_TIMEOUT. | |
3819 | * | |
3820 | * This action changes the idle timeout or hard timeout, or both, of this | |
3821 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
3822 | * When such a packet is observed, the action reduces the rule's idle timeout | |
3823 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
3824 | * action has no effect on an existing timeout that is already shorter than the | |
3825 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
3826 | * of zero has no effect on the respective timeout. | |
3827 | * | |
3828 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
3829 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
3830 | * receipt of the FIN or RST. | |
3831 | * | |
3832 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
3833 | * take a long time to expire. | |
3834 | * | |
3835 | * This action is intended for use with an OpenFlow rule that matches only a | |
3836 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
3837 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
3838 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
3839 | * early, which is not normally desirable. | |
3840 | */ | |
3841 | struct nx_action_fin_timeout { | |
3842 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3843 | ovs_be16 len; /* 16. */ | |
3844 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3845 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
3846 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
3847 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
3848 | ovs_be16 pad; /* Must be zero. */ | |
3849 | }; | |
3850 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 3851 | |
c2d936a4 BP |
3852 | static enum ofperr |
3853 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 3854 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3855 | struct ofpbuf *out) |
3856 | { | |
3857 | struct ofpact_fin_timeout *oft; | |
8621547c | 3858 | |
c2d936a4 BP |
3859 | oft = ofpact_put_FIN_TIMEOUT(out); |
3860 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
3861 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
3862 | return 0; | |
3863 | } | |
f25d0cf3 | 3864 | |
c2d936a4 BP |
3865 | static void |
3866 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
3867 | enum ofp_version ofp_version OVS_UNUSED, | |
3868 | struct ofpbuf *out) | |
3869 | { | |
3870 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
3871 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
3872 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
3873 | } | |
f25d0cf3 | 3874 | |
cab50449 | 3875 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3876 | parse_FIN_TIMEOUT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3877 | { |
efefbcae | 3878 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(pp->ofpacts); |
c2d936a4 | 3879 | char *key, *value; |
f25d0cf3 | 3880 | |
c2d936a4 BP |
3881 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
3882 | char *error; | |
b02475c5 | 3883 | |
c2d936a4 BP |
3884 | if (!strcmp(key, "idle_timeout")) { |
3885 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
3886 | } else if (!strcmp(key, "hard_timeout")) { | |
3887 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
3888 | } else { | |
3889 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
3890 | key); | |
8621547c | 3891 | } |
8dd54666 | 3892 | |
c2d936a4 BP |
3893 | if (error) { |
3894 | return error; | |
9cae45dc | 3895 | } |
9cae45dc | 3896 | } |
c2d936a4 BP |
3897 | return NULL; |
3898 | } | |
e3b56933 | 3899 | |
c2d936a4 | 3900 | static void |
50f96b10 | 3901 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, |
efefbcae | 3902 | const struct ofpact_format_params *fp) |
c2d936a4 | 3903 | { |
efefbcae | 3904 | ds_put_format(fp->s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 3905 | if (a->fin_idle_timeout) { |
efefbcae | 3906 | ds_put_format(fp->s, "%sidle_timeout=%s%"PRIu16",", |
b1c5bf1f | 3907 | colors.param, colors.end, a->fin_idle_timeout); |
7e9f8266 | 3908 | } |
c2d936a4 | 3909 | if (a->fin_hard_timeout) { |
efefbcae | 3910 | ds_put_format(fp->s, "%shard_timeout=%s%"PRIu16",", |
b1c5bf1f | 3911 | colors.param, colors.end, a->fin_hard_timeout); |
f25d0cf3 | 3912 | } |
efefbcae BP |
3913 | ds_chomp(fp->s, ','); |
3914 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f25d0cf3 | 3915 | } |
f839892a JS |
3916 | |
3917 | /* Action structure for NXAST_ENCAP */ | |
3918 | struct nx_action_encap { | |
3919 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3920 | ovs_be16 len; /* Total size including any property TLVs. */ | |
3921 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3922 | ovs_be16 subtype; /* NXAST_ENCAP. */ | |
3923 | ovs_be16 hdr_size; /* Header size in bytes, 0 = 'not specified'.*/ | |
3924 | ovs_be32 new_pkt_type; /* Header type to add and PACKET_TYPE of result. */ | |
3925 | struct ofp_ed_prop_header props[]; /* Encap TLV properties. */ | |
3926 | }; | |
3927 | OFP_ASSERT(sizeof(struct nx_action_encap) == 16); | |
3928 | ||
3929 | static enum ofperr | |
3930 | decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae, | |
3931 | enum ofp_version ofp_version OVS_UNUSED, | |
3932 | struct ofpbuf *out) | |
3933 | { | |
3934 | struct ofpact_encap *encap; | |
3935 | const struct ofp_ed_prop_header *ofp_prop; | |
3936 | size_t props_len; | |
3937 | uint16_t n_props = 0; | |
3938 | int err; | |
3939 | ||
3940 | encap = ofpact_put_ENCAP(out); | |
3941 | encap->ofpact.raw = NXAST_RAW_ENCAP; | |
3942 | switch (ntohl(nae->new_pkt_type)) { | |
3943 | case PT_ETH: | |
1fc11c59 | 3944 | case PT_NSH: |
f839892a JS |
3945 | /* Add supported encap header types here. */ |
3946 | break; | |
3947 | default: | |
3948 | return OFPERR_NXBAC_BAD_HEADER_TYPE; | |
3949 | } | |
3950 | encap->new_pkt_type = nae->new_pkt_type; | |
3951 | encap->hdr_size = ntohs(nae->hdr_size); | |
3952 | ||
3953 | ofp_prop = nae->props; | |
3954 | props_len = ntohs(nae->len) - offsetof(struct nx_action_encap, props); | |
3955 | n_props = 0; | |
3956 | while (props_len > 0) { | |
3957 | err = decode_ed_prop(&ofp_prop, out, &props_len); | |
3958 | if (err) { | |
3959 | return err; | |
3960 | } | |
3961 | n_props++; | |
3962 | } | |
3963 | encap->n_props = n_props; | |
3964 | out->header = &encap->ofpact; | |
3965 | ofpact_finish_ENCAP(out, &encap); | |
3966 | ||
3967 | return 0; | |
3968 | } | |
3969 | ||
3970 | static void | |
3971 | encode_ENCAP(const struct ofpact_encap *encap, | |
3972 | enum ofp_version ofp_version OVS_UNUSED, | |
3973 | struct ofpbuf *out) | |
3974 | { | |
3975 | size_t start_ofs = out->size; | |
3976 | struct nx_action_encap *nae = put_NXAST_ENCAP(out); | |
3977 | int i; | |
3978 | ||
3979 | nae->new_pkt_type = encap->new_pkt_type; | |
3980 | nae->hdr_size = htons(encap->hdr_size); | |
3981 | const struct ofpact_ed_prop *prop = encap->props; | |
3982 | for (i = 0; i < encap->n_props; i++) { | |
3983 | encode_ed_prop(&prop, out); | |
3984 | } | |
3985 | pad_ofpat(out, start_ofs); | |
3986 | } | |
3987 | ||
3988 | static bool | |
3989 | parse_encap_header(const char *hdr, ovs_be32 *packet_type) | |
3990 | { | |
3991 | if (strcmp(hdr, "ethernet") == 0) { | |
3992 | *packet_type = htonl(PT_ETH); | |
1fc11c59 JS |
3993 | } else if (strcmp(hdr, "nsh") == 0) { |
3994 | *packet_type = htonl(PT_NSH); | |
f839892a JS |
3995 | } else { |
3996 | return false; | |
3997 | } | |
3998 | return true; | |
3999 | } | |
4000 | ||
4001 | static char * | |
4002 | parse_ed_props(const uint16_t prop_class, char **arg, int *n_props, struct ofpbuf *out) | |
4003 | { | |
4004 | char *key, *value, *err; | |
4005 | uint8_t prop_type; | |
4006 | ||
4007 | while (ofputil_parse_key_value(arg, &key, &value)) { | |
4008 | if (!parse_ed_prop_type(prop_class, key, &prop_type)) { | |
4009 | return xasprintf("Invalid property: %s", key); | |
4010 | } | |
4011 | if (value == NULL) { | |
4012 | return xasprintf("Missing the value for property: %s", key); | |
4013 | } | |
4014 | err = parse_ed_prop_value(prop_class, prop_type, value, out); | |
4015 | if (err != NULL) { | |
4016 | return err; | |
4017 | } | |
4018 | (*n_props)++; | |
4019 | } | |
4020 | return NULL; | |
4021 | } | |
4022 | ||
4023 | /* The string representation of the encap action is | |
4024 | * encap(header_type(prop=<value>,tlv(<class>,<type>,<value>),...)) | |
4025 | */ | |
4026 | ||
4027 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4028 | parse_ENCAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4029 | { |
4030 | struct ofpact_encap *encap; | |
4031 | char *key, *value, *str; | |
4032 | char *error = NULL; | |
4033 | uint16_t prop_class; | |
4034 | int n_props = 0; | |
4035 | ||
efefbcae | 4036 | encap = ofpact_put_ENCAP(pp->ofpacts); |
f839892a JS |
4037 | encap->hdr_size = 0; |
4038 | /* Parse encap header type. */ | |
4039 | str = arg; | |
4040 | if (!ofputil_parse_key_value(&arg, &key, &value)) { | |
4041 | return xasprintf("Missing encap hdr: %s", str); | |
4042 | } | |
4043 | if (!parse_encap_header(key, &encap->new_pkt_type)) { | |
4044 | return xasprintf("Encap hdr not supported: %s", value); | |
4045 | } | |
4046 | if (!parse_ed_prop_class(key, &prop_class)) { | |
4047 | return xasprintf("Invalid encap prop class: %s", key); | |
4048 | } | |
4049 | /* Parse encap properties. */ | |
efefbcae | 4050 | error = parse_ed_props(prop_class, &value, &n_props, pp->ofpacts); |
f839892a JS |
4051 | if (error != NULL) { |
4052 | return error; | |
4053 | } | |
efefbcae BP |
4054 | /* ofpbuf may have been re-allocated. */ |
4055 | encap = pp->ofpacts->header; | |
f839892a | 4056 | encap->n_props = n_props; |
efefbcae | 4057 | ofpact_finish_ENCAP(pp->ofpacts, &encap); |
f839892a JS |
4058 | return NULL; |
4059 | } | |
4060 | ||
4061 | static char * | |
4062 | format_encap_pkt_type(const ovs_be32 pkt_type) | |
4063 | { | |
4064 | switch (ntohl(pkt_type)) { | |
4065 | case PT_ETH: | |
4066 | return "ethernet"; | |
1fc11c59 JS |
4067 | case PT_NSH: |
4068 | return "nsh"; | |
f839892a JS |
4069 | default: |
4070 | return "UNKNOWN"; | |
4071 | } | |
4072 | } | |
4073 | ||
4074 | static void | |
4075 | format_ed_props(struct ds *s, uint16_t n_props, | |
4076 | const struct ofpact_ed_prop *prop) | |
4077 | { | |
4078 | const uint8_t *p = (uint8_t *) prop; | |
4079 | int i; | |
4080 | ||
4081 | if (n_props == 0) { | |
4082 | return; | |
4083 | } | |
4084 | for (i = 0; i < n_props; i++) { | |
4085 | format_ed_prop(s, prop); | |
4086 | ds_put_char(s, ','); | |
4087 | p += ROUND_UP(prop->len, 8); | |
4088 | prop = ALIGNED_CAST(const struct ofpact_ed_prop *, p); | |
4089 | } | |
4090 | if (n_props > 0) { | |
4091 | ds_chomp(s, ','); | |
4092 | } | |
4093 | } | |
4094 | ||
4095 | static void | |
4096 | format_ENCAP(const struct ofpact_encap *a, | |
efefbcae | 4097 | const struct ofpact_format_params *fp) |
f839892a | 4098 | { |
efefbcae BP |
4099 | ds_put_format(fp->s, "%sencap(%s", colors.paren, colors.end); |
4100 | ds_put_format(fp->s, "%s", format_encap_pkt_type(a->new_pkt_type)); | |
f839892a | 4101 | if (a->n_props > 0) { |
efefbcae BP |
4102 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
4103 | format_ed_props(fp->s, a->n_props, a->props); | |
4104 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f839892a | 4105 | } |
efefbcae | 4106 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4107 | } |
4108 | ||
4109 | /* Action structure for NXAST_DECAP */ | |
4110 | struct nx_action_decap { | |
4111 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4112 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4113 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4114 | ovs_be16 subtype; /* NXAST_DECAP. */ | |
4115 | uint8_t pad[2]; /* 2 bytes padding */ | |
4116 | ||
4117 | /* Packet type or result. | |
4118 | * | |
4119 | * The special value (0,0xFFFE) "Use next proto" | |
4120 | * is used to request OVS to automatically set the new packet type based | |
4121 | * on the decap'ed header's next protocol. | |
4122 | */ | |
4123 | ovs_be32 new_pkt_type; | |
4124 | }; | |
4125 | OFP_ASSERT(sizeof(struct nx_action_decap) == 16); | |
4126 | ||
4127 | static enum ofperr | |
4128 | decode_NXAST_RAW_DECAP(const struct nx_action_decap *nad, | |
4129 | enum ofp_version ofp_version OVS_UNUSED, | |
4130 | struct ofpbuf *ofpacts) | |
4131 | { | |
4132 | struct ofpact_decap * decap; | |
4133 | ||
4134 | if (ntohs(nad->len) > sizeof *nad) { | |
4135 | /* No properties supported yet. */ | |
4136 | return OFPERR_NXBAC_UNKNOWN_ED_PROP; | |
4137 | } | |
4138 | ||
4139 | decap = ofpact_put_DECAP(ofpacts); | |
4140 | decap->ofpact.raw = NXAST_RAW_DECAP; | |
4141 | decap->new_pkt_type = nad->new_pkt_type; | |
4142 | return 0; | |
4143 | } | |
4144 | ||
4145 | static void | |
4146 | encode_DECAP(const struct ofpact_decap *decap, | |
4147 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4148 | { | |
4149 | struct nx_action_decap *nad = put_NXAST_DECAP(out); | |
4150 | ||
4151 | nad->len = htons(sizeof(struct nx_action_decap)); | |
4152 | nad->new_pkt_type = decap->new_pkt_type; | |
4153 | } | |
4154 | ||
4155 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4156 | parse_DECAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4157 | { |
4158 | struct ofpact_decap *decap; | |
4159 | char *key, *value, *pos; | |
4160 | char *error = NULL; | |
4161 | uint16_t ns, type; | |
4162 | ||
efefbcae | 4163 | decap = ofpact_put_DECAP(pp->ofpacts); |
f839892a JS |
4164 | /* Default next packet_type is PT_USE_NEXT_PROTO. */ |
4165 | decap->new_pkt_type = htonl(PT_USE_NEXT_PROTO); | |
4166 | ||
4167 | /* Parse decap packet_type if given. */ | |
4168 | if (ofputil_parse_key_value(&arg, &key, &value)) { | |
4169 | if (strcmp(key, "packet_type") == 0) { | |
4170 | pos = value; | |
4171 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4172 | || strcmp(key, "ns") != 0) { | |
4173 | return xstrdup("Missing packet_type attribute ns"); | |
4174 | } | |
4175 | error = str_to_u16(value, "ns", &ns); | |
4176 | if (error) { | |
4177 | return error; | |
4178 | } | |
4179 | if (ns >= OFPHTN_N_TYPES) { | |
4180 | return xasprintf("Unsupported ns value: %"PRIu16, ns); | |
4181 | } | |
4182 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4183 | || strcmp(key, "type") != 0) { | |
4184 | return xstrdup("Missing packet_type attribute type"); | |
4185 | } | |
4186 | error = str_to_u16(value, "type", &type); | |
4187 | if (error) { | |
4188 | return error; | |
4189 | } | |
4190 | decap->new_pkt_type = htonl(PACKET_TYPE(ns, type)); | |
4191 | } else { | |
4192 | return xasprintf("Invalid decap argument: %s", key); | |
4193 | } | |
4194 | } | |
4195 | return NULL; | |
4196 | } | |
4197 | ||
4198 | static void | |
4199 | format_DECAP(const struct ofpact_decap *a, | |
efefbcae | 4200 | const struct ofpact_format_params *fp) |
f839892a | 4201 | { |
efefbcae | 4202 | ds_put_format(fp->s, "%sdecap(%s", colors.paren, colors.end); |
f839892a | 4203 | if (a->new_pkt_type != htonl(PT_USE_NEXT_PROTO)) { |
efefbcae | 4204 | ds_put_format(fp->s, "packet_type(ns=%"PRIu16",id=%#"PRIx16")", |
f839892a JS |
4205 | pt_ns(a->new_pkt_type), |
4206 | pt_ns_type(a->new_pkt_type)); | |
4207 | } | |
efefbcae | 4208 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4209 | } |
4210 | ||
491e05c2 YY |
4211 | /* Action dec_nsh_ttl */ |
4212 | ||
4213 | static enum ofperr | |
4214 | decode_NXAST_RAW_DEC_NSH_TTL(struct ofpbuf *out) | |
4215 | { | |
4216 | ofpact_put_DEC_NSH_TTL(out); | |
4217 | return 0; | |
4218 | } | |
4219 | ||
4220 | static void | |
4221 | encode_DEC_NSH_TTL(const struct ofpact_null *null OVS_UNUSED, | |
4222 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4223 | { | |
4224 | put_NXAST_DEC_NSH_TTL(out); | |
4225 | } | |
4226 | ||
4227 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4228 | parse_DEC_NSH_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
491e05c2 | 4229 | { |
efefbcae | 4230 | ofpact_put_DEC_NSH_TTL(pp->ofpacts); |
491e05c2 YY |
4231 | return NULL; |
4232 | } | |
4233 | ||
4234 | static void | |
4235 | format_DEC_NSH_TTL(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 4236 | const struct ofpact_format_params *fp) |
491e05c2 | 4237 | { |
efefbcae | 4238 | ds_put_format(fp->s, "%sdec_nsh_ttl%s", colors.special, colors.end); |
491e05c2 YY |
4239 | } |
4240 | ||
c2d936a4 | 4241 | \f |
2cd20955 JR |
4242 | /* Action structures for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE, and |
4243 | * NXAST_RESUBMIT_TABLE_CT. | |
eca39bce | 4244 | * |
c2d936a4 | 4245 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 4246 | * |
2cd20955 JR |
4247 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the |
4248 | * 'table' member is not 255, then it specifies the table to search. | |
ca287d20 | 4249 | * |
2cd20955 JR |
4250 | * - Otherwise (for NXAST_RESUBMIT_TABLE or NXAST_RESUBMIT_TABLE_CT with a |
4251 | * 'table' of 255, or for NXAST_RESUBMIT regardless of 'table'), it | |
4252 | * searches the current flow table, that is, the OpenFlow flow table that | |
4253 | * contains the flow from which this action was obtained. If this action | |
4254 | * did not come from a flow table (e.g. it came from an OFPT_PACKET_OUT | |
4255 | * message), then table 0 is the current table. | |
c2d936a4 BP |
4256 | * |
4257 | * The flow table lookup uses a flow that may be slightly modified from the | |
4258 | * original lookup: | |
4259 | * | |
4260 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
4261 | * is used as the flow's in_port. | |
4262 | * | |
2cd20955 JR |
4263 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the 'in_port' |
4264 | * member is not OFPP_IN_PORT, then its value is used as the flow's | |
4265 | * in_port. Otherwise, the original in_port is used. | |
4266 | * | |
4267 | * - For NXAST_RESUBMIT_TABLE_CT the Conntrack 5-tuple fields are used as | |
4268 | * the packets IP header fields during the lookup. | |
c2d936a4 BP |
4269 | * |
4270 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
4271 | * resubmit action, then the flow is updated with the new values. | |
4272 | * | |
4273 | * Following the lookup, the original in_port is restored. | |
4274 | * | |
4275 | * If the modified flow matched in the flow table, then the corresponding | |
4276 | * actions are executed. Afterward, actions following the resubmit in the | |
4277 | * original set of actions, if any, are executed; any changes made to the | |
4278 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
4279 | * actions are executed, although the original in_port is restored. | |
4280 | * | |
4281 | * Resubmit actions may be used any number of times within a set of actions. | |
4282 | * | |
790c5d26 BP |
4283 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
4284 | * use, the implementation may limit nesting depth and the total number of | |
4285 | * resubmits: | |
4286 | * | |
4287 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
4288 | * | |
4289 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
4290 | * | |
4291 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
4292 | * | |
4293 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
4294 | * | |
4295 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
4296 | * | |
4297 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
4298 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
4299 | * did not impose any total limit). | |
c2d936a4 | 4300 | * |
2cd20955 JR |
4301 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE and |
4302 | * NXAST_RESUBMIT_TABLE_CT require 'pad' to be all-bits-zero. | |
c2d936a4 BP |
4303 | * |
4304 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
2cd20955 JR |
4305 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. Open vSwitch before |
4306 | * 2.8.0 did not support NXAST_RESUBMIT_TABLE_CT. | |
c2d936a4 BP |
4307 | */ |
4308 | struct nx_action_resubmit { | |
4309 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4310 | ovs_be16 len; /* Length is 16. */ | |
4311 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4312 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
4313 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
4314 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
4315 | uint8_t pad[3]; | |
4316 | }; | |
4317 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
4318 | ||
4319 | static enum ofperr | |
f3cd3ac7 JS |
4320 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
4321 | enum ofp_version ofp_version OVS_UNUSED, | |
4322 | struct ofpbuf *out) | |
f25d0cf3 | 4323 | { |
c2d936a4 | 4324 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 4325 | |
c2d936a4 BP |
4326 | resubmit = ofpact_put_RESUBMIT(out); |
4327 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
4328 | resubmit->in_port = u16_to_ofp(port); | |
4329 | resubmit->table_id = 0xff; | |
4330 | return 0; | |
f25d0cf3 | 4331 | } |
4cceacb9 | 4332 | |
c2d936a4 BP |
4333 | static enum ofperr |
4334 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 4335 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 4336 | struct ofpbuf *out) |
ba2fe8e9 | 4337 | { |
c2d936a4 | 4338 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 4339 | |
c2d936a4 BP |
4340 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
4341 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4342 | } | |
4343 | ||
4344 | resubmit = ofpact_put_RESUBMIT(out); | |
4345 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
4346 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
4347 | resubmit->table_id = nar->table; | |
4348 | return 0; | |
ba2fe8e9 BP |
4349 | } |
4350 | ||
2cd20955 JR |
4351 | static enum ofperr |
4352 | decode_NXAST_RAW_RESUBMIT_TABLE_CT(const struct nx_action_resubmit *nar, | |
4353 | enum ofp_version ofp_version OVS_UNUSED, | |
4354 | struct ofpbuf *out) | |
4355 | { | |
4356 | enum ofperr error = decode_NXAST_RAW_RESUBMIT_TABLE(nar, ofp_version, out); | |
4357 | if (error) { | |
4358 | return error; | |
4359 | } | |
4360 | struct ofpact_resubmit *resubmit = out->header; | |
4361 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE_CT; | |
4362 | resubmit->with_ct_orig = true; | |
4363 | return 0; | |
4364 | } | |
4365 | ||
c2d936a4 BP |
4366 | static void |
4367 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
4368 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 4369 | { |
c2d936a4 | 4370 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 4371 | |
c2d936a4 | 4372 | if (resubmit->table_id == 0xff |
2cd20955 | 4373 | && resubmit->ofpact.raw == NXAST_RAW_RESUBMIT) { |
c2d936a4 BP |
4374 | put_NXAST_RESUBMIT(out, in_port); |
4375 | } else { | |
2cd20955 JR |
4376 | struct nx_action_resubmit *nar; |
4377 | nar = resubmit->with_ct_orig | |
4378 | ? put_NXAST_RESUBMIT_TABLE_CT(out) : put_NXAST_RESUBMIT_TABLE(out); | |
c2d936a4 BP |
4379 | nar->table = resubmit->table_id; |
4380 | nar->in_port = htons(in_port); | |
4381 | } | |
4382 | } | |
6813ee7c | 4383 | |
cab50449 | 4384 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4385 | parse_RESUBMIT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
4386 | { |
4387 | struct ofpact_resubmit *resubmit; | |
2cd20955 | 4388 | char *in_port_s, *table_s, *ct_s; |
6813ee7c | 4389 | |
efefbcae | 4390 | resubmit = ofpact_put_RESUBMIT(pp->ofpacts); |
8f2cded4 | 4391 | |
c2d936a4 BP |
4392 | in_port_s = strsep(&arg, ","); |
4393 | if (in_port_s && in_port_s[0]) { | |
efefbcae | 4394 | if (!ofputil_port_from_string(in_port_s, pp->port_map, |
50f96b10 | 4395 | &resubmit->in_port)) { |
c2d936a4 | 4396 | return xasprintf("%s: resubmit to unknown port", in_port_s); |
8f2cded4 | 4397 | } |
c2d936a4 BP |
4398 | } else { |
4399 | resubmit->in_port = OFPP_IN_PORT; | |
4400 | } | |
4cceacb9 | 4401 | |
c2d936a4 BP |
4402 | table_s = strsep(&arg, ","); |
4403 | if (table_s && table_s[0]) { | |
4bc938cc BP |
4404 | if (!ofputil_table_from_string(table_s, pp->table_map, |
4405 | &resubmit->table_id)) { | |
4406 | return xasprintf("%s: resubmit to unknown table", table_s); | |
c2d936a4 | 4407 | } |
c2d936a4 BP |
4408 | } else { |
4409 | resubmit->table_id = 255; | |
4cceacb9 JS |
4410 | } |
4411 | ||
2cd20955 JR |
4412 | ct_s = strsep(&arg, ","); |
4413 | if (ct_s && ct_s[0]) { | |
4414 | if (strcmp(ct_s, "ct")) { | |
4415 | return xasprintf("%s: unknown parameter", ct_s); | |
4416 | } | |
4417 | resubmit->with_ct_orig = true; | |
4418 | } else { | |
4419 | resubmit->with_ct_orig = false; | |
4420 | } | |
4421 | ||
c2d936a4 BP |
4422 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
4423 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
4424 | "specified on resubmit"); | |
4425 | } | |
4426 | return NULL; | |
4427 | } | |
4428 | ||
4429 | static void | |
50f96b10 | 4430 | format_RESUBMIT(const struct ofpact_resubmit *a, |
efefbcae | 4431 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
4432 | { |
4433 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
efefbcae BP |
4434 | ds_put_format(fp->s, "%sresubmit:%s", colors.special, colors.end); |
4435 | ofputil_format_port(a->in_port, fp->port_map, fp->s); | |
c2d936a4 | 4436 | } else { |
efefbcae | 4437 | ds_put_format(fp->s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 | 4438 | if (a->in_port != OFPP_IN_PORT) { |
efefbcae | 4439 | ofputil_format_port(a->in_port, fp->port_map, fp->s); |
c2d936a4 | 4440 | } |
efefbcae | 4441 | ds_put_char(fp->s, ','); |
c2d936a4 | 4442 | if (a->table_id != 255) { |
4bc938cc | 4443 | ofputil_format_table(a->table_id, fp->table_map, fp->s); |
c2d936a4 | 4444 | } |
2cd20955 | 4445 | if (a->with_ct_orig) { |
efefbcae | 4446 | ds_put_cstr(fp->s, ",ct"); |
2cd20955 | 4447 | } |
efefbcae | 4448 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
4449 | } |
4450 | } | |
4451 | \f | |
4c71600d | 4452 | /* Action structure for NXAST_LEARN and NXAST_LEARN2. |
c2d936a4 BP |
4453 | * |
4454 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
4455 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
4456 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
4457 | * flow's match criteria and actions are built by applying each of the series | |
4458 | * of flow_mod_spec elements included as part of the action. | |
4459 | * | |
4460 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
4461 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
4462 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
4463 | * bits from a source to a destination. In this case, the header contains | |
4464 | * multiple fields: | |
4465 | * | |
4466 | * 15 14 13 12 11 10 0 | |
4467 | * +------+---+------+---------------------------------+ | |
4468 | * | 0 |src| dst | n_bits | | |
4469 | * +------+---+------+---------------------------------+ | |
4470 | * | |
4471 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
4472 | * following table summarizes the meaning of each possible combination. | |
4473 | * Details follow the table: | |
4474 | * | |
4475 | * src dst meaning | |
4476 | * --- --- ---------------------------------------------------------- | |
4477 | * 0 0 Add match criteria based on value in a field. | |
4478 | * 1 0 Add match criteria based on an immediate value. | |
4479 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
4480 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
4481 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
4482 | * All other combinations are undefined and not allowed. | |
4483 | * | |
4484 | * The flow_mod_spec header is followed by a source specification and a | |
4485 | * destination specification. The format and meaning of the source | |
4486 | * specification depends on 'src': | |
4487 | * | |
4488 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
4489 | * which this action is attached. (This should be a wildcarded field. If | |
4490 | * its value is fully specified then the source bits being copied have | |
4491 | * constant values.) | |
4492 | * | |
4493 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
4494 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
4495 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
4496 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
4497 | * field in NXAST_REG_MOVE. | |
4498 | * | |
4499 | * - If 'src' is 1, the source bits are a constant value. The source | |
4500 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
4501 | * number in network order, the source bits are the 'n_bits' | |
4502 | * least-significant bits. The switch will report an error if other bits | |
4503 | * in the constant are nonzero. | |
4504 | * | |
4505 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
4506 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
4507 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
4508 | * meaning of the flow_mod_spec depends on 'dst': | |
4509 | * | |
4510 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
4511 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
4512 | * packet equal the source bits. 'field' may be any nxm_header with | |
4513 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
4514 | * | |
4515 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
4516 | * prerequisites for matching fields specified later, by copying constant | |
4517 | * values into prerequisite fields. | |
4518 | * | |
4519 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
4520 | * restrictions. | |
4521 | * | |
4522 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
4523 | * the new flow. The new flow copies the source bits into | |
4524 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
4525 | * flow_mod_specs. | |
4526 | * | |
4527 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
4528 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
4529 | * | |
4530 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
4531 | * empty. It has the following meaning: | |
4532 | * | |
4533 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
4534 | * The new flow outputs to the OpenFlow port specified by the source field. | |
4535 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
4536 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
4537 | * may not be used. | |
4538 | * | |
4539 | * Resource Management | |
4540 | * ------------------- | |
4541 | * | |
4542 | * A switch has a finite amount of flow table space available for learning. | |
4543 | * When this space is exhausted, no new learning table entries will be learned | |
4544 | * until some existing flow table entries expire. The controller should be | |
4545 | * prepared to handle this by flooding (which can be implemented as a | |
4546 | * low-priority flow). | |
4547 | * | |
4548 | * If a learned flow matches a single TCP stream with a relatively long | |
4549 | * timeout, one may make the best of resource constraints by setting | |
4550 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
4551 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
4552 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
4553 | * the learned flow. | |
4554 | * | |
4555 | * Examples | |
4556 | * -------- | |
4557 | * | |
4558 | * The following examples give a prose description of the flow_mod_specs along | |
4559 | * with informal notation for how those would be represented and a hex dump of | |
4560 | * the bytes that would be required. | |
4561 | * | |
4562 | * These examples could work with various nx_action_learn parameters. Typical | |
4563 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
4564 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
4565 | * | |
4566 | * 1. Learn input port based on the source MAC, with lookup into | |
4567 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
4568 | * | |
4569 | * Match on in_port=99: | |
4570 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
4571 | * ovs_be16(99), 00 63 | |
4572 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4573 | * | |
4574 | * Match Ethernet destination on Ethernet source from packet: | |
4575 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4576 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4577 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4578 | * | |
4579 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
4580 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
4581 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4582 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
4583 | * | |
4584 | * Given a packet that arrived on port A with Ethernet source address B, | |
4585 | * this would set up the flow "in_port=99, dl_dst=B, | |
4586 | * actions=load:A->NXM_NX_REG1[16..31]". | |
4587 | * | |
4588 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
4589 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4590 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
4591 | * | |
4592 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
4593 | * into NXM_NX_REG1[16:31]: | |
4594 | * | |
4595 | * Match on same VLAN ID as packet: | |
4596 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
4597 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4598 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
4599 | * | |
4600 | * Match Ethernet destination on Ethernet source from packet: | |
4601 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
4602 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
4603 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
4604 | * | |
4605 | * Output to the packet's input port: | |
4606 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
4607 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
4608 | * | |
4609 | * Given a packet that arrived on port A with Ethernet source address B in | |
4610 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
4611 | * actions=output:A". | |
4612 | * | |
4613 | * In syntax accepted by ovs-ofctl, this action is: | |
4614 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
4615 | * output:NXM_OF_IN_PORT[]) | |
4616 | * | |
4617 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
4618 | * 10-second MAC expiration time to make it easier to see what's going on | |
4619 | * | |
4620 | * ovs-vsctl del-controller br0 | |
4621 | * ovs-ofctl del-flows br0 | |
4622 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
4623 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
4624 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
4625 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
4626 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
4627 | * | |
4628 | * You can then dump the MAC learning table with: | |
4629 | * | |
4630 | * ovs-ofctl dump-flows br0 table=1 | |
4631 | * | |
4632 | * Usage Advice | |
4633 | * ------------ | |
4634 | * | |
4635 | * For best performance, segregate learned flows into a table that is not used | |
4636 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
4637 | * (a flow with no match criteria). If different learning actions specify | |
4638 | * different match criteria, use different tables for the learned flows. | |
4639 | * | |
4640 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
4641 | * These timeouts apply to the flow that is added, which means that a flow with | |
4642 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
4643 | * address. This is not usually the intent in MAC learning; instead, we want | |
4644 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
4645 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
4646 | * |
4647 | * | |
4648 | * Visibility of Changes | |
4649 | * --------------------- | |
4650 | * | |
4651 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
4652 | * flow translation are visible to flow table lookups made later in the flow | |
4653 | * translation. This means that, in the example above, a MAC learned by the | |
4654 | * learn action in table 0 would be found in table 1 (if the packet being | |
4655 | * processed had the same source and destination MAC address). | |
4656 | * | |
4657 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
4658 | * modify a flow) by a "learn" action are visible only for later flow | |
4659 | * translations, not for later lookups within the same flow translation. In | |
4660 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
4661 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
4662 | * after the processing of the learn action, meaning that if this MAC had not | |
4663 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
4664 | struct nx_action_learn { |
4665 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4666 | ovs_be16 len; /* At least 24. */ | |
4667 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4668 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
4669 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
4670 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
4671 | ovs_be16 priority; /* Priority level of flow entry. */ | |
4672 | ovs_be64 cookie; /* Cookie for new flow. */ | |
4673 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
4674 | uint8_t table_id; /* Table to insert flow entry. */ | |
4675 | uint8_t pad; /* Must be zero. */ | |
4676 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
4677 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
4678 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
4679 | * until the end of the action is reached. */ | |
4680 | }; | |
4681 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
4682 | ||
4c71600d DDP |
4683 | struct nx_action_learn2 { |
4684 | struct nx_action_learn up; /* The wire format includes nx_action_learn. */ | |
1746822c JS |
4685 | ovs_be32 limit; /* Maximum number of learned flows. |
4686 | * 0 indicates unlimited. */ | |
4c71600d DDP |
4687 | |
4688 | /* Where to store the result. */ | |
4689 | ovs_be16 result_dst_ofs; /* Starting bit offset in destination. */ | |
4690 | ||
4691 | ovs_be16 pad2; /* Must be zero. */ | |
4692 | /* Followed by: | |
4693 | * - OXM/NXM header for destination field (4 or 8 bytes), | |
4694 | * if NX_LEARN_F_WRITE_RESULT is set in 'flags' | |
4695 | * - a sequence of flow_mod_spec elements, as described above, | |
4696 | * until the end of the action is reached. */ | |
4697 | }; | |
4698 | OFP_ASSERT(sizeof(struct nx_action_learn2) == 40); | |
4699 | ||
c2d936a4 BP |
4700 | static ovs_be16 |
4701 | get_be16(const void **pp) | |
4702 | { | |
4703 | const ovs_be16 *p = *pp; | |
4704 | ovs_be16 value = *p; | |
4705 | *pp = p + 1; | |
4706 | return value; | |
4707 | } | |
4708 | ||
4709 | static ovs_be32 | |
4710 | get_be32(const void **pp) | |
4711 | { | |
4712 | const ovs_be32 *p = *pp; | |
4713 | ovs_be32 value = get_unaligned_be32(p); | |
4714 | *pp = p + 1; | |
4715 | return value; | |
4716 | } | |
4717 | ||
04f48a68 YHW |
4718 | static enum ofperr |
4719 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf, | |
5c7c16d8 | 4720 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
c2d936a4 | 4721 | { |
5c7c16d8 YHW |
4722 | enum ofperr error; |
4723 | ||
4724 | error = mf_vl_mff_mf_from_nxm_header(ntohl(get_be32(p)), vl_mff_map, | |
4725 | &sf->field, tlv_bitmap); | |
c2d936a4 BP |
4726 | sf->ofs = ntohs(get_be16(p)); |
4727 | sf->n_bits = n_bits; | |
5c7c16d8 | 4728 | return error; |
c2d936a4 BP |
4729 | } |
4730 | ||
4731 | static unsigned int | |
4732 | learn_min_len(uint16_t header) | |
4733 | { | |
4734 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
4735 | int src_type = header & NX_LEARN_SRC_MASK; | |
4736 | int dst_type = header & NX_LEARN_DST_MASK; | |
4737 | unsigned int min_len; | |
4738 | ||
4739 | min_len = 0; | |
4740 | if (src_type == NX_LEARN_SRC_FIELD) { | |
4741 | min_len += sizeof(ovs_be32); /* src_field */ | |
4742 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
4743 | } else { | |
bc759a2c | 4744 | min_len += 2 * DIV_ROUND_UP(n_bits, 16); |
c2d936a4 BP |
4745 | } |
4746 | if (dst_type == NX_LEARN_DST_MATCH || | |
4747 | dst_type == NX_LEARN_DST_LOAD) { | |
4748 | min_len += sizeof(ovs_be32); /* dst_field */ | |
4749 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
4750 | } | |
4751 | return min_len; | |
4752 | } | |
4753 | ||
c2d936a4 | 4754 | static enum ofperr |
2ce5f311 | 4755 | decode_LEARN_common(const struct nx_action_learn *nal, |
a9fedc78 | 4756 | enum ofp_raw_action_type raw, |
2ce5f311 | 4757 | struct ofpact_learn *learn) |
c2d936a4 | 4758 | { |
c2d936a4 BP |
4759 | if (nal->pad) { |
4760 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4761 | } | |
4762 | ||
a9fedc78 | 4763 | learn->ofpact.raw = raw; |
c2d936a4 BP |
4764 | learn->idle_timeout = ntohs(nal->idle_timeout); |
4765 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
4766 | learn->priority = ntohs(nal->priority); | |
4767 | learn->cookie = nal->cookie; | |
4768 | learn->table_id = nal->table_id; | |
4769 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
4770 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
c2d936a4 | 4771 | learn->flags = ntohs(nal->flags); |
c2d936a4 BP |
4772 | |
4773 | if (learn->table_id == 0xff) { | |
4774 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4775 | } | |
4776 | ||
2ce5f311 DDP |
4777 | return 0; |
4778 | } | |
4779 | ||
4780 | static enum ofperr | |
4781 | decode_LEARN_specs(const void *p, const void *end, | |
4782 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, | |
4783 | struct ofpbuf *ofpacts) | |
4784 | { | |
4785 | struct ofpact_learn *learn = ofpacts->header; | |
4786 | ||
4787 | while (p != end) { | |
c2d936a4 BP |
4788 | struct ofpact_learn_spec *spec; |
4789 | uint16_t header = ntohs(get_be16(&p)); | |
4790 | ||
4791 | if (!header) { | |
4792 | break; | |
4793 | } | |
4794 | ||
4795 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 4796 | learn = ofpacts->header; |
c2d936a4 BP |
4797 | |
4798 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
4799 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
4800 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
4801 | ||
4802 | /* Check for valid src and dst type combination. */ | |
4803 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4804 | spec->dst_type == NX_LEARN_DST_LOAD || | |
4805 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
4806 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
4807 | /* OK. */ | |
4808 | } else { | |
4809 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4810 | } | |
4811 | ||
4812 | /* Check that the arguments don't overrun the end of the action. */ | |
4813 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
4814 | return OFPERR_OFPBAC_BAD_LEN; | |
4815 | } | |
4816 | ||
4817 | /* Get the source. */ | |
dfe191d5 JR |
4818 | const uint8_t *imm = NULL; |
4819 | unsigned int imm_bytes = 0; | |
04f48a68 | 4820 | enum ofperr error; |
c2d936a4 | 4821 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
5c7c16d8 YHW |
4822 | error = get_subfield(spec->n_bits, &p, &spec->src, vl_mff_map, |
4823 | tlv_bitmap); | |
04f48a68 YHW |
4824 | if (error) { |
4825 | return error; | |
4826 | } | |
c2d936a4 BP |
4827 | } else { |
4828 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 4829 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
4830 | |
4831 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
4832 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
4833 | } |
4834 | ||
4835 | /* Get the destination. */ | |
4836 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
4837 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
5c7c16d8 YHW |
4838 | error = get_subfield(spec->n_bits, &p, &spec->dst, vl_mff_map, |
4839 | tlv_bitmap); | |
04f48a68 YHW |
4840 | if (error) { |
4841 | return error; | |
4842 | } | |
c2d936a4 | 4843 | } |
dfe191d5 JR |
4844 | |
4845 | if (imm) { | |
4846 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
4847 | OFPACT_ALIGN(imm_bytes)); | |
4848 | memcpy(src_imm, imm, imm_bytes); | |
4849 | ||
4850 | learn = ofpacts->header; | |
4851 | } | |
c2d936a4 | 4852 | } |
ce058104 | 4853 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
4854 | |
4855 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
4856 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4857 | } | |
4858 | ||
4859 | return 0; | |
4860 | } | |
4861 | ||
2ce5f311 DDP |
4862 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
4863 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4864 | static enum ofperr | |
4865 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
4866 | enum ofp_version ofp_version OVS_UNUSED, | |
4867 | const struct vl_mff_map *vl_mff_map, | |
4868 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
4869 | { | |
4870 | struct ofpact_learn *learn; | |
4871 | enum ofperr error; | |
4872 | ||
4873 | learn = ofpact_put_LEARN(ofpacts); | |
4874 | ||
a9fedc78 | 4875 | error = decode_LEARN_common(nal, NXAST_RAW_LEARN, learn); |
2ce5f311 DDP |
4876 | if (error) { |
4877 | return error; | |
4878 | } | |
4879 | ||
4880 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4881 | NX_LEARN_F_DELETE_LEARNED)) { | |
4882 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4883 | } | |
4884 | ||
4885 | return decode_LEARN_specs(nal + 1, (char *) nal + ntohs(nal->len), | |
4886 | vl_mff_map, tlv_bitmap, ofpacts); | |
4887 | } | |
4888 | ||
4c71600d DDP |
4889 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
4890 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
4891 | static enum ofperr | |
4892 | decode_NXAST_RAW_LEARN2(const struct nx_action_learn2 *nal, | |
4893 | enum ofp_version ofp_version OVS_UNUSED, | |
4894 | const struct vl_mff_map *vl_mff_map, | |
4895 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
4896 | { | |
4897 | struct ofpbuf b = ofpbuf_const_initializer(nal, ntohs(nal->up.len)); | |
4898 | struct ofpact_learn *learn; | |
4899 | enum ofperr error; | |
4900 | ||
4901 | if (nal->pad2) { | |
4902 | return OFPERR_NXBAC_MUST_BE_ZERO; | |
4903 | } | |
4904 | ||
4905 | learn = ofpact_put_LEARN(ofpacts); | |
a9fedc78 | 4906 | error = decode_LEARN_common(&nal->up, NXAST_RAW_LEARN2, learn); |
4c71600d DDP |
4907 | if (error) { |
4908 | return error; | |
4909 | } | |
4910 | ||
4911 | learn->limit = ntohl(nal->limit); | |
4912 | ||
4913 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
4914 | NX_LEARN_F_DELETE_LEARNED | | |
4915 | NX_LEARN_F_WRITE_RESULT)) { | |
4916 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4917 | } | |
4918 | ||
4919 | ofpbuf_pull(&b, sizeof *nal); | |
4920 | ||
4921 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
4922 | error = nx_pull_header(&b, vl_mff_map, &learn->result_dst.field, NULL); | |
4923 | if (error) { | |
4924 | return error; | |
4925 | } | |
4926 | if (!learn->result_dst.field->writable) { | |
4927 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
4928 | } | |
4929 | learn->result_dst.ofs = ntohs(nal->result_dst_ofs); | |
4930 | learn->result_dst.n_bits = 1; | |
4931 | } else if (nal->result_dst_ofs) { | |
4932 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4933 | } | |
4934 | ||
4935 | return decode_LEARN_specs(b.data, (char *) nal + ntohs(nal->up.len), | |
4936 | vl_mff_map, tlv_bitmap, ofpacts); | |
4937 | } | |
4938 | ||
c2d936a4 BP |
4939 | static void |
4940 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
4941 | { | |
4942 | ofpbuf_put(b, &x, sizeof x); | |
4943 | } | |
4944 | ||
4945 | static void | |
4946 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
4947 | { | |
4948 | ofpbuf_put(b, &x, sizeof x); | |
4949 | } | |
4950 | ||
4951 | static void | |
4952 | put_u16(struct ofpbuf *b, uint16_t x) | |
4953 | { | |
4954 | put_be16(b, htons(x)); | |
4955 | } | |
4956 | ||
4957 | static void | |
4958 | put_u32(struct ofpbuf *b, uint32_t x) | |
4959 | { | |
4960 | put_be32(b, htonl(x)); | |
4961 | } | |
4962 | ||
4963 | static void | |
4964 | encode_LEARN(const struct ofpact_learn *learn, | |
4965 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4966 | { | |
4967 | const struct ofpact_learn_spec *spec; | |
4968 | struct nx_action_learn *nal; | |
4969 | size_t start_ofs; | |
4970 | ||
6fd6ed71 | 4971 | start_ofs = out->size; |
4c71600d DDP |
4972 | |
4973 | if (learn->ofpact.raw == NXAST_RAW_LEARN2 | |
4974 | || learn->limit != 0 | |
4975 | || learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
4976 | struct nx_action_learn2 *nal2; | |
4977 | ||
4978 | nal2 = put_NXAST_LEARN2(out); | |
4979 | nal2->limit = htonl(learn->limit); | |
4980 | nal2->result_dst_ofs = htons(learn->result_dst.ofs); | |
4981 | nal = &nal2->up; | |
4982 | } else { | |
4983 | nal = put_NXAST_LEARN(out); | |
4984 | } | |
c2d936a4 BP |
4985 | nal->idle_timeout = htons(learn->idle_timeout); |
4986 | nal->hard_timeout = htons(learn->hard_timeout); | |
4987 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
4988 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
4989 | nal->priority = htons(learn->priority); | |
4990 | nal->cookie = learn->cookie; | |
4991 | nal->flags = htons(learn->flags); | |
4992 | nal->table_id = learn->table_id; | |
4993 | ||
4c71600d DDP |
4994 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
4995 | nx_put_header(out, learn->result_dst.field->id, 0, false); | |
4996 | } | |
4997 | ||
c65a31e2 | 4998 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
4999 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
5000 | ||
5001 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
04f48a68 | 5002 | put_u32(out, nxm_header_from_mff(spec->src.field)); |
c2d936a4 BP |
5003 | put_u16(out, spec->src.ofs); |
5004 | } else { | |
5005 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
5006 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 5007 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 5008 | |
507a9a16 JR |
5009 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
5010 | n_bytes); | |
c2d936a4 BP |
5011 | } |
5012 | ||
5013 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5014 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
04f48a68 | 5015 | put_u32(out, nxm_header_from_mff(spec->dst.field)); |
c2d936a4 BP |
5016 | put_u16(out, spec->dst.ofs); |
5017 | } | |
5018 | } | |
5019 | ||
178742f9 | 5020 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5021 | } |
5022 | ||
cab50449 | 5023 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5024 | parse_LEARN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5025 | { |
4bc938cc | 5026 | return learn_parse(arg, pp->port_map, pp->table_map, pp->ofpacts); |
c2d936a4 BP |
5027 | } |
5028 | ||
5029 | static void | |
50f96b10 | 5030 | format_LEARN(const struct ofpact_learn *a, |
efefbcae | 5031 | const struct ofpact_format_params *fp) |
c2d936a4 | 5032 | { |
4bc938cc | 5033 | learn_format(a, fp->port_map, fp->table_map, fp->s); |
c2d936a4 BP |
5034 | } |
5035 | \f | |
18080541 BP |
5036 | /* Action structure for NXAST_CONJUNCTION. */ |
5037 | struct nx_action_conjunction { | |
5038 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5039 | ovs_be16 len; /* At least 16. */ | |
5040 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5041 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
5042 | uint8_t clause; | |
5043 | uint8_t n_clauses; | |
5044 | ovs_be32 id; | |
5045 | }; | |
5046 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
5047 | ||
5048 | static void | |
5049 | add_conjunction(struct ofpbuf *out, | |
5050 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
5051 | { | |
5052 | struct ofpact_conjunction *oc; | |
5053 | ||
5054 | oc = ofpact_put_CONJUNCTION(out); | |
5055 | oc->id = id; | |
5056 | oc->clause = clause; | |
5057 | oc->n_clauses = n_clauses; | |
5058 | } | |
5059 | ||
5060 | static enum ofperr | |
5061 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 5062 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
5063 | struct ofpbuf *out) |
5064 | { | |
5065 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
5066 | || nac->clause >= nac->n_clauses) { | |
5067 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
5068 | } else { | |
5069 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
5070 | return 0; | |
5071 | } | |
5072 | } | |
5073 | ||
5074 | static void | |
5075 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
5076 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5077 | { | |
5078 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
5079 | nac->clause = oc->clause; | |
5080 | nac->n_clauses = oc->n_clauses; | |
5081 | nac->id = htonl(oc->id); | |
5082 | } | |
5083 | ||
5084 | static void | |
50f96b10 | 5085 | format_CONJUNCTION(const struct ofpact_conjunction *oc, |
efefbcae | 5086 | const struct ofpact_format_params *fp) |
18080541 | 5087 | { |
efefbcae | 5088 | ds_put_format(fp->s, "%sconjunction(%s%"PRIu32",%d/%"PRIu8"%s)%s", |
b1c5bf1f QM |
5089 | colors.paren, colors.end, |
5090 | oc->id, oc->clause + 1, oc->n_clauses, | |
5091 | colors.paren, colors.end); | |
18080541 BP |
5092 | } |
5093 | ||
5094 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5095 | parse_CONJUNCTION(const char *arg, const struct ofpact_parse_params *pp) |
18080541 BP |
5096 | { |
5097 | uint8_t n_clauses; | |
5098 | uint8_t clause; | |
5099 | uint32_t id; | |
5100 | int n; | |
5101 | ||
5102 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
5103 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
5104 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
5105 | } | |
5106 | ||
5107 | if (n_clauses < 2) { | |
5108 | return xstrdup("conjunction must have at least 2 clauses"); | |
5109 | } else if (n_clauses > 64) { | |
5110 | return xstrdup("conjunction must have at most 64 clauses"); | |
5111 | } else if (clause < 1) { | |
5112 | return xstrdup("clause index must be positive"); | |
5113 | } else if (clause > n_clauses) { | |
5114 | return xstrdup("clause index must be less than or equal to " | |
5115 | "number of clauses"); | |
5116 | } | |
5117 | ||
efefbcae | 5118 | add_conjunction(pp->ofpacts, id, clause - 1, n_clauses); |
18080541 BP |
5119 | return NULL; |
5120 | } | |
5121 | \f | |
c2d936a4 BP |
5122 | /* Action structure for NXAST_MULTIPATH. |
5123 | * | |
5124 | * This action performs the following steps in sequence: | |
5125 | * | |
5126 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
5127 | * Refer to the definition of "enum nx_mp_fields" for details. | |
5128 | * | |
5129 | * The 'basis' value is used as a universal hash parameter, that is, | |
5130 | * different values of 'basis' yield different hash functions. The | |
5131 | * particular universal hash function used is implementation-defined. | |
5132 | * | |
5133 | * The hashed fields' values are drawn from the current state of the | |
5134 | * flow, including all modifications that have been made by actions up to | |
5135 | * this point. | |
5136 | * | |
5137 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
5138 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
5139 | * for details. | |
5140 | * | |
5141 | * The output of the algorithm is 'link', an unsigned integer less than | |
5142 | * or equal to 'max_link'. | |
5143 | * | |
5144 | * Some algorithms use 'arg' as an additional argument. | |
5145 | * | |
5146 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
5147 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
5148 | * action. | |
5149 | * | |
5150 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
5151 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
5152 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
5153 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
5154 | */ | |
5155 | struct nx_action_multipath { | |
5156 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5157 | ovs_be16 len; /* Length is 32. */ | |
5158 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5159 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
5160 | ||
5161 | /* What fields to hash and how. */ | |
5162 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
5163 | ovs_be16 basis; /* Universal hash parameter. */ | |
5164 | ovs_be16 pad0; | |
5165 | ||
5166 | /* Multipath link choice algorithm to apply to hash value. */ | |
5167 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
5168 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
5169 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
5170 | ovs_be16 pad1; | |
5171 | ||
5172 | /* Where to store the result. */ | |
5173 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
5174 | ovs_be32 dst; /* Destination. */ | |
5175 | }; | |
5176 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
5177 | ||
5178 | static enum ofperr | |
5179 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 5180 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 5181 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 5182 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 BP |
5183 | { |
5184 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
5185 | size_t min_n_bits = log_2_ceil(n_links); | |
5186 | struct ofpact_multipath *mp; | |
5c7c16d8 | 5187 | enum ofperr error; |
c2d936a4 BP |
5188 | |
5189 | mp = ofpact_put_MULTIPATH(out); | |
5190 | mp->fields = ntohs(nam->fields); | |
5191 | mp->basis = ntohs(nam->basis); | |
5192 | mp->algorithm = ntohs(nam->algorithm); | |
5193 | mp->max_link = ntohs(nam->max_link); | |
5194 | mp->arg = ntohl(nam->arg); | |
c2d936a4 BP |
5195 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); |
5196 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
5c7c16d8 YHW |
5197 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nam->dst), vl_mff_map, |
5198 | &mp->dst.field, tlv_bitmap); | |
5199 | if (error) { | |
5200 | return error; | |
04f48a68 YHW |
5201 | } |
5202 | ||
c2d936a4 BP |
5203 | if (!flow_hash_fields_valid(mp->fields)) { |
5204 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
5205 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5206 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
5207 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
5208 | && mp->algorithm != NX_MP_ALG_HRW | |
5209 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
5210 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
5211 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5212 | } else if (mp->dst.n_bits < min_n_bits) { | |
5213 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
5214 | "%"PRIu32" links", min_n_bits, n_links); | |
5215 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5216 | } | |
5217 | ||
5218 | return multipath_check(mp, NULL); | |
5219 | } | |
5220 | ||
5221 | static void | |
5222 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
5223 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5224 | { | |
5225 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
5226 | ||
5227 | nam->fields = htons(mp->fields); | |
5228 | nam->basis = htons(mp->basis); | |
5229 | nam->algorithm = htons(mp->algorithm); | |
5230 | nam->max_link = htons(mp->max_link); | |
5231 | nam->arg = htonl(mp->arg); | |
5232 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
04f48a68 | 5233 | nam->dst = htonl(nxm_header_from_mff(mp->dst.field)); |
c2d936a4 BP |
5234 | } |
5235 | ||
cab50449 | 5236 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5237 | parse_MULTIPATH(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5238 | { |
efefbcae | 5239 | return multipath_parse(ofpact_put_MULTIPATH(pp->ofpacts), arg); |
c2d936a4 BP |
5240 | } |
5241 | ||
5242 | static void | |
50f96b10 | 5243 | format_MULTIPATH(const struct ofpact_multipath *a, |
efefbcae | 5244 | const struct ofpact_format_params *fp) |
c2d936a4 | 5245 | { |
efefbcae | 5246 | multipath_format(a, fp->s); |
c2d936a4 BP |
5247 | } |
5248 | \f | |
5249 | /* Action structure for NXAST_NOTE. | |
5250 | * | |
5251 | * This action has no effect. It is variable length. The switch does not | |
5252 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
5253 | * can use this action to attach arbitrary metadata to a flow. | |
5254 | * | |
5255 | * This action might go away in the future. | |
5256 | */ | |
5257 | struct nx_action_note { | |
5258 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5259 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
5260 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5261 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
5262 | uint8_t note[6]; /* Start of user-defined data. */ | |
5263 | /* Possibly followed by additional user-defined data. */ | |
5264 | }; | |
5265 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
5266 | ||
5267 | static enum ofperr | |
f3cd3ac7 JS |
5268 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
5269 | enum ofp_version ofp_version OVS_UNUSED, | |
5270 | struct ofpbuf *out) | |
c2d936a4 BP |
5271 | { |
5272 | struct ofpact_note *note; | |
5273 | unsigned int length; | |
5274 | ||
5275 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 5276 | note = ofpact_put_NOTE(out); |
c2d936a4 | 5277 | note->length = length; |
2bd318de | 5278 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 5279 | note = out->header; |
ce058104 | 5280 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
5281 | |
5282 | return 0; | |
5283 | } | |
5284 | ||
5285 | static void | |
5286 | encode_NOTE(const struct ofpact_note *note, | |
5287 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5288 | { | |
6fd6ed71 | 5289 | size_t start_ofs = out->size; |
c2d936a4 | 5290 | struct nx_action_note *nan; |
c2d936a4 BP |
5291 | |
5292 | put_NXAST_NOTE(out); | |
6fd6ed71 | 5293 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
5294 | |
5295 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 5296 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5297 | } |
5298 | ||
cab50449 | 5299 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
5300 | parse_NOTE(const char *arg, const struct ofpact_parse_params *pp) |
5301 | { | |
5302 | size_t start_ofs = pp->ofpacts->size; | |
5303 | ofpact_put_NOTE(pp->ofpacts); | |
5304 | arg = ofpbuf_put_hex(pp->ofpacts, arg, NULL); | |
27aa8793 BP |
5305 | if (arg[0]) { |
5306 | return xstrdup("bad hex digit in `note' argument"); | |
5307 | } | |
efefbcae | 5308 | struct ofpact_note *note = ofpbuf_at_assert(pp->ofpacts, start_ofs, |
27aa8793 | 5309 | sizeof *note); |
efefbcae BP |
5310 | note->length = pp->ofpacts->size - (start_ofs + sizeof *note); |
5311 | ofpact_finish_NOTE(pp->ofpacts, ¬e); | |
c2d936a4 BP |
5312 | return NULL; |
5313 | } | |
5314 | ||
5315 | static void | |
50f96b10 | 5316 | format_NOTE(const struct ofpact_note *a, |
efefbcae | 5317 | const struct ofpact_format_params *fp) |
c2d936a4 | 5318 | { |
efefbcae BP |
5319 | ds_put_format(fp->s, "%snote:%s", colors.param, colors.end); |
5320 | format_hex_arg(fp->s, a->data, a->length); | |
c2d936a4 BP |
5321 | } |
5322 | \f | |
5323 | /* Exit action. */ | |
5324 | ||
5325 | static enum ofperr | |
5326 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
5327 | { | |
5328 | ofpact_put_EXIT(out); | |
5329 | return 0; | |
5330 | } | |
5331 | ||
5332 | static void | |
5333 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
5334 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5335 | { | |
5336 | put_NXAST_EXIT(out); | |
5337 | } | |
5338 | ||
cab50449 | 5339 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5340 | parse_EXIT(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 5341 | { |
efefbcae | 5342 | ofpact_put_EXIT(pp->ofpacts); |
c2d936a4 BP |
5343 | return NULL; |
5344 | } | |
5345 | ||
5346 | static void | |
50f96b10 | 5347 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 5348 | const struct ofpact_format_params *fp) |
c2d936a4 | 5349 | { |
efefbcae | 5350 | ds_put_format(fp->s, "%sexit%s", colors.special, colors.end); |
c2d936a4 BP |
5351 | } |
5352 | \f | |
e672ff9b JR |
5353 | /* Unroll xlate action. */ |
5354 | ||
5355 | static void | |
5356 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
5357 | enum ofp_version ofp_version OVS_UNUSED, | |
5358 | struct ofpbuf *out OVS_UNUSED) | |
5359 | { | |
5360 | OVS_NOT_REACHED(); | |
5361 | } | |
5362 | ||
5363 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 5364 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, |
efefbcae | 5365 | const struct ofpact_parse_params *pp OVS_UNUSED) |
e672ff9b JR |
5366 | { |
5367 | OVS_NOT_REACHED(); | |
e672ff9b JR |
5368 | } |
5369 | ||
5370 | static void | |
50f96b10 | 5371 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, |
efefbcae | 5372 | const struct ofpact_format_params *fp) |
e672ff9b | 5373 | { |
4bc938cc | 5374 | ds_put_format(fp->s, "%sunroll_xlate(%s%stable=%s", |
b1c5bf1f | 5375 | colors.paren, colors.end, |
4bc938cc BP |
5376 | colors.special, colors.end); |
5377 | ofputil_format_table(a->rule_table_id, fp->table_map, fp->s); | |
5378 | ds_put_format(fp->s, ", %scookie=%s%"PRIu64"%s)%s", | |
b1c5bf1f QM |
5379 | colors.param, colors.end, ntohll(a->rule_cookie), |
5380 | colors.paren, colors.end); | |
e672ff9b JR |
5381 | } |
5382 | \f | |
7ae62a67 WT |
5383 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
5384 | * more embedded OpenFlow actions. */ | |
5385 | ||
5386 | static enum ofperr | |
5387 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
04f48a68 YHW |
5388 | enum ofp_version ofp_version, |
5389 | const struct vl_mff_map *vl_mff_map, | |
5c7c16d8 | 5390 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7ae62a67 WT |
5391 | { |
5392 | int error; | |
5393 | struct ofpbuf openflow; | |
5394 | const size_t clone_offset = ofpacts_pull(out); | |
5395 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
5396 | ||
5397 | /* decode action list */ | |
5398 | ofpbuf_pull(out, sizeof(*clone)); | |
5399 | openflow = ofpbuf_const_initializer( | |
5400 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
5401 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
5402 | ofp_version, | |
5403 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 | 5404 | out, 0, vl_mff_map, tlv_bitmap); |
7ae62a67 WT |
5405 | clone = ofpbuf_push_uninit(out, sizeof *clone); |
5406 | out->header = &clone->ofpact; | |
5407 | ofpact_finish_CLONE(out, &clone); | |
5408 | ofpbuf_push_uninit(out, clone_offset); | |
5409 | return error; | |
5410 | } | |
5411 | ||
5412 | static void | |
5413 | encode_CLONE(const struct ofpact_nest *clone, | |
5414 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5415 | { | |
5416 | size_t len; | |
5417 | const size_t ofs = out->size; | |
5418 | struct ext_action_header *eah; | |
5419 | ||
6f9648e4 | 5420 | put_NXAST_CLONE(out); |
7ae62a67 WT |
5421 | len = ofpacts_put_openflow_actions(clone->actions, |
5422 | ofpact_nest_get_action_len(clone), | |
5423 | out, ofp_version); | |
5424 | len += sizeof *eah; | |
5425 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
5426 | eah->len = htons(len); | |
5427 | } | |
5428 | ||
5429 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5430 | parse_CLONE(char *arg, const struct ofpact_parse_params *pp) |
7ae62a67 | 5431 | { |
efefbcae BP |
5432 | const size_t clone_offset = ofpacts_pull(pp->ofpacts); |
5433 | struct ofpact_nest *clone = ofpact_put_CLONE(pp->ofpacts); | |
7ae62a67 WT |
5434 | char *error; |
5435 | ||
efefbcae BP |
5436 | ofpbuf_pull(pp->ofpacts, sizeof *clone); |
5437 | error = ofpacts_parse_copy(arg, pp, false, 0); | |
7ae62a67 | 5438 | /* header points to the action list */ |
efefbcae BP |
5439 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, sizeof *clone); |
5440 | clone = pp->ofpacts->header; | |
7ae62a67 | 5441 | |
efefbcae BP |
5442 | ofpact_finish_CLONE(pp->ofpacts, &clone); |
5443 | ofpbuf_push_uninit(pp->ofpacts, clone_offset); | |
7ae62a67 WT |
5444 | return error; |
5445 | } | |
5446 | ||
5447 | static void | |
50f96b10 | 5448 | format_CLONE(const struct ofpact_nest *a, |
efefbcae | 5449 | const struct ofpact_format_params *fp) |
7ae62a67 | 5450 | { |
efefbcae BP |
5451 | ds_put_format(fp->s, "%sclone(%s", colors.paren, colors.end); |
5452 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
5453 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
7ae62a67 WT |
5454 | } |
5455 | \f | |
c2d936a4 BP |
5456 | /* Action structure for NXAST_SAMPLE. |
5457 | * | |
5458 | * Samples matching packets with the given probability and sends them | |
5459 | * each to the set of collectors identified with the given ID. The | |
5460 | * probability is expressed as a number of packets to be sampled out | |
5461 | * of USHRT_MAX packets, and must be >0. | |
5462 | * | |
5463 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
5464 | * record sent for each sampled packet is associated with the given | |
5465 | * observation domain ID and observation point ID. Each IPFIX flow | |
5466 | * record contain the sampled packet's headers when executing this | |
5467 | * rule. If a sampled packet's headers are modified by previous | |
5468 | * actions in the flow, those modified headers are sent. */ | |
5469 | struct nx_action_sample { | |
5470 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5471 | ovs_be16 len; /* Length is 24. */ | |
5472 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5473 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5474 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5475 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5476 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5477 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5478 | }; | |
5479 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
5480 | ||
4930ea56 | 5481 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 5482 | * |
4930ea56 BP |
5483 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
5484 | * it adds support for exporting egress tunnel information. | |
5485 | * | |
5486 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
5487 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
5488 | struct nx_action_sample2 { |
5489 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5490 | ovs_be16 len; /* Length is 32. */ | |
5491 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5492 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5493 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5494 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5495 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5496 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5497 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
5498 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
5499 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
5500 | }; |
5501 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
5502 | ||
c2d936a4 | 5503 | static enum ofperr |
f3cd3ac7 JS |
5504 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
5505 | enum ofp_version ofp_version OVS_UNUSED, | |
5506 | struct ofpbuf *out) | |
c2d936a4 BP |
5507 | { |
5508 | struct ofpact_sample *sample; | |
5509 | ||
5510 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
5511 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
5512 | sample->probability = ntohs(nas->probability); | |
5513 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
5514 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
5515 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 5516 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 5517 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
5518 | |
5519 | if (sample->probability == 0) { | |
5520 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5521 | } | |
5522 | ||
5523 | return 0; | |
5524 | } | |
5525 | ||
5526 | static enum ofperr | |
4930ea56 BP |
5527 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
5528 | enum ofp_raw_action_type raw, | |
5529 | enum nx_action_sample_direction direction, | |
5530 | struct ofpact_sample *sample) | |
f69f713b | 5531 | { |
4930ea56 | 5532 | sample->ofpact.raw = raw; |
c2d936a4 BP |
5533 | sample->probability = ntohs(nas->probability); |
5534 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
5535 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
5536 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 5537 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 5538 | sample->direction = direction; |
c2d936a4 BP |
5539 | |
5540 | if (sample->probability == 0) { | |
5541 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5542 | } | |
5543 | ||
5544 | return 0; | |
5545 | } | |
5546 | ||
4930ea56 BP |
5547 | static enum ofperr |
5548 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
5549 | enum ofp_version ofp_version OVS_UNUSED, | |
5550 | struct ofpbuf *out) | |
5551 | { | |
5552 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
5553 | ofpact_put_SAMPLE(out)); | |
5554 | } | |
5555 | ||
5556 | static enum ofperr | |
5557 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
5558 | enum ofp_version ofp_version OVS_UNUSED, | |
5559 | struct ofpbuf *out) | |
5560 | { | |
5561 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
5562 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
5563 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
5564 | } | |
5565 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
5566 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
5567 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
5568 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
5569 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5570 | } | |
5571 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
5572 | } | |
5573 | ||
5574 | static void | |
5575 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
5576 | struct nx_action_sample2 *nas) | |
5577 | { | |
5578 | nas->probability = htons(sample->probability); | |
5579 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5580 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5581 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5582 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
5583 | nas->direction = sample->direction; | |
5584 | } | |
5585 | ||
c2d936a4 BP |
5586 | static void |
5587 | encode_SAMPLE(const struct ofpact_sample *sample, | |
5588 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5589 | { | |
4930ea56 BP |
5590 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
5591 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
5592 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
5593 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
5594 | || sample->sampling_port != OFPP_NONE) { | |
5595 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
5596 | } else { |
5597 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
5598 | nas->probability = htons(sample->probability); | |
5599 | nas->collector_set_id = htonl(sample->collector_set_id); | |
5600 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
5601 | nas->obs_point_id = htonl(sample->obs_point_id); | |
5602 | } | |
c2d936a4 BP |
5603 | } |
5604 | ||
5605 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
efefbcae | 5606 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
5607 | * |
5608 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
5609 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 5610 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5611 | parse_SAMPLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5612 | { |
efefbcae | 5613 | struct ofpact_sample *os = ofpact_put_SAMPLE(pp->ofpacts); |
f69f713b | 5614 | os->sampling_port = OFPP_NONE; |
4930ea56 | 5615 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 5616 | |
f69f713b | 5617 | char *key, *value; |
c2d936a4 BP |
5618 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
5619 | char *error = NULL; | |
5620 | ||
5621 | if (!strcmp(key, "probability")) { | |
5622 | error = str_to_u16(value, "probability", &os->probability); | |
5623 | if (!error && os->probability == 0) { | |
5624 | error = xasprintf("invalid probability value \"%s\"", value); | |
5625 | } | |
5626 | } else if (!strcmp(key, "collector_set_id")) { | |
5627 | error = str_to_u32(value, &os->collector_set_id); | |
5628 | } else if (!strcmp(key, "obs_domain_id")) { | |
5629 | error = str_to_u32(value, &os->obs_domain_id); | |
5630 | } else if (!strcmp(key, "obs_point_id")) { | |
5631 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b | 5632 | } else if (!strcmp(key, "sampling_port")) { |
efefbcae | 5633 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 5634 | &os->sampling_port)) { |
f69f713b BY |
5635 | error = xasprintf("%s: unknown port", value); |
5636 | } | |
4930ea56 BP |
5637 | } else if (!strcmp(key, "ingress")) { |
5638 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
5639 | } else if (!strcmp(key, "egress")) { | |
5640 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
5641 | } else { |
5642 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
5643 | key); | |
5644 | } | |
5645 | if (error) { | |
5646 | return error; | |
5647 | } | |
5648 | } | |
5649 | if (os->probability == 0) { | |
5650 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
5651 | } | |
f69f713b | 5652 | |
c2d936a4 BP |
5653 | return NULL; |
5654 | } | |
5655 | ||
5656 | static void | |
50f96b10 | 5657 | format_SAMPLE(const struct ofpact_sample *a, |
efefbcae | 5658 | const struct ofpact_format_params *fp) |
c2d936a4 | 5659 | { |
efefbcae | 5660 | ds_put_format(fp->s, "%ssample(%s%sprobability=%s%"PRIu16 |
b1c5bf1f QM |
5661 | ",%scollector_set_id=%s%"PRIu32 |
5662 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 5663 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
5664 | colors.paren, colors.end, |
5665 | colors.param, colors.end, a->probability, | |
5666 | colors.param, colors.end, a->collector_set_id, | |
5667 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
5668 | colors.param, colors.end, a->obs_point_id); |
5669 | if (a->sampling_port != OFPP_NONE) { | |
efefbcae BP |
5670 | ds_put_format(fp->s, ",%ssampling_port=%s", colors.param, colors.end); |
5671 | ofputil_format_port(a->sampling_port, fp->port_map, fp->s); | |
f69f713b | 5672 | } |
4930ea56 | 5673 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
efefbcae | 5674 | ds_put_format(fp->s, ",%singress%s", colors.param, colors.end); |
4930ea56 | 5675 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { |
efefbcae | 5676 | ds_put_format(fp->s, ",%segress%s", colors.param, colors.end); |
4930ea56 | 5677 | } |
efefbcae | 5678 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
5679 | } |
5680 | \f | |
a934a3dd | 5681 | /* debug instructions. */ |
d4abaff5 BP |
5682 | |
5683 | static bool enable_debug; | |
5684 | ||
5685 | void | |
5686 | ofpact_dummy_enable(void) | |
5687 | { | |
5688 | enable_debug = true; | |
5689 | } | |
5690 | ||
5691 | static enum ofperr | |
5692 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
5693 | { | |
5694 | if (!enable_debug) { | |
5695 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5696 | } | |
5697 | ||
5698 | ofpact_put_DEBUG_RECIRC(out); | |
5699 | return 0; | |
5700 | } | |
5701 | ||
5702 | static void | |
5703 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
5704 | enum ofp_version ofp_version OVS_UNUSED, | |
5705 | struct ofpbuf *out) | |
5706 | { | |
5707 | put_NXAST_DEBUG_RECIRC(out); | |
5708 | } | |
5709 | ||
5710 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5711 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
d4abaff5 | 5712 | { |
efefbcae | 5713 | ofpact_put_DEBUG_RECIRC(pp->ofpacts); |
d4abaff5 BP |
5714 | return NULL; |
5715 | } | |
5716 | ||
5717 | static void | |
50f96b10 | 5718 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 5719 | const struct ofpact_format_params *fp) |
d4abaff5 | 5720 | { |
efefbcae | 5721 | ds_put_format(fp->s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 5722 | } |
07659514 | 5723 | |
a934a3dd JP |
5724 | static enum ofperr |
5725 | decode_NXAST_RAW_DEBUG_SLOW(struct ofpbuf *out) | |
5726 | { | |
5727 | if (!enable_debug) { | |
5728 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
5729 | } | |
5730 | ||
5731 | ofpact_put_DEBUG_SLOW(out); | |
5732 | return 0; | |
5733 | } | |
5734 | ||
5735 | static void | |
5736 | encode_DEBUG_SLOW(const struct ofpact_null *n OVS_UNUSED, | |
5737 | enum ofp_version ofp_version OVS_UNUSED, | |
5738 | struct ofpbuf *out) | |
5739 | { | |
5740 | put_NXAST_DEBUG_SLOW(out); | |
5741 | } | |
5742 | ||
5743 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5744 | parse_DEBUG_SLOW(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
a934a3dd | 5745 | { |
efefbcae | 5746 | ofpact_put_DEBUG_SLOW(pp->ofpacts); |
a934a3dd JP |
5747 | return NULL; |
5748 | } | |
5749 | ||
5750 | static void | |
5751 | format_DEBUG_SLOW(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 5752 | const struct ofpact_format_params *fp) |
a934a3dd | 5753 | { |
efefbcae | 5754 | ds_put_format(fp->s, "%sdebug_slow%s", colors.value, colors.end); |
a934a3dd JP |
5755 | } |
5756 | ||
07659514 JS |
5757 | /* Action structure for NXAST_CT. |
5758 | * | |
5759 | * Pass traffic to the connection tracker. | |
5760 | * | |
5761 | * There are two important concepts to understanding the connection tracking | |
5762 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
5763 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
5764 | * | |
5765 | * - Packet State: | |
5766 | * | |
f6fabcc6 JP |
5767 | * Untracked packets have an unknown connection state. In most |
5768 | * cases, packets entering the OpenFlow pipeline will initially be | |
5769 | * in the untracked state. Untracked packets may become tracked by | |
5770 | * executing NXAST_CT with a "recirc_table" specified. This makes | |
5771 | * various aspects about the connection available, in particular | |
5772 | * the connection state. | |
5773 | * | |
5774 | * An NXAST_CT action always puts the packet into an untracked | |
5775 | * state for the current processing path. If "recirc_table" is | |
5776 | * set, execution is forked and the packet passes through the | |
5777 | * connection tracker. The specified table's processing path is | |
5778 | * able to match on Connection state until the end of the OpenFlow | |
5779 | * pipeline or NXAST_CT is called again. | |
07659514 JS |
5780 | * |
5781 | * - Connection State: | |
5782 | * | |
5783 | * Multiple packets may be associated with a single connection. Initially, | |
5784 | * all connections are uncommitted. The connection state corresponding to | |
5785 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
5786 | * | |
5787 | * Uncommitted connections have no state stored about them. Uncommitted | |
5788 | * connections may transition into the committed state by executing | |
5789 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
5790 | * | |
5791 | * Once a connection becomes committed, information may be gathered about | |
5792 | * the connection by passing subsequent packets through the connection | |
5793 | * tracker, and the state of the connection will be stored beyond the | |
5794 | * lifetime of packet processing. | |
5795 | * | |
a76a37ef JR |
5796 | * A committed connection always has the directionality of the packet that |
5797 | * caused the connection to be committed in the first place. This is the | |
5798 | * "original direction" of the connection, and the opposite direction is | |
5799 | * the "reply direction". If a connection is already committed, but it is | |
5800 | * then decided that the original direction should be the opposite of the | |
5801 | * existing connection, NX_CT_F_FORCE flag may be used in addition to | |
5802 | * NX_CT_F_COMMIT flag to in effect terminate the existing connection and | |
5803 | * start a new one in the current direction. | |
5804 | * | |
07659514 JS |
5805 | * Connections may transition back into the uncommitted state due to |
5806 | * external timers, or due to the contents of packets that are sent to the | |
5807 | * connection tracker. This behaviour is outside of the scope of the | |
5808 | * OpenFlow interface. | |
5809 | * | |
5810 | * The "zone" specifies a context within which the tracking is done: | |
5811 | * | |
5812 | * The connection tracking zone is a 16-bit number. Each zone is an | |
5813 | * independent connection tracking context. The connection state for each | |
5814 | * connection is completely separate for each zone, so if a connection | |
5815 | * is committed to zone A, then it will remain uncommitted in zone B. | |
5816 | * If NXAST_CT is executed with the same zone multiple times, later | |
5817 | * executions have no effect. | |
5818 | * | |
5819 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
5820 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
5821 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
5822 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
5823 | * are the same as the acceptable nxm_header values for the 'src' field of | |
5824 | * NXAST_REG_MOVE. | |
5825 | * | |
5826 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
5827 | * connection tracking zone. | |
5828 | * | |
5829 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
5830 | * | |
5831 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
5832 | * packet will be logically cloned prior to executing this action. One | |
5833 | * copy will be sent to the connection tracker, then will be re-injected | |
5834 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
5835 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
5836 | * fields will be populated. The original instance of the packet will | |
5837 | * continue the current actions list. This can be thought of as similar to | |
5838 | * the effect of the "output" action: One copy is sent out (in this case, | |
5839 | * to the connection tracker), but the current copy continues processing. | |
5840 | * | |
5841 | * It is strongly recommended that this table is later than the current | |
5842 | * table, to prevent loops. | |
8e53fe8c | 5843 | * |
d787ad39 JS |
5844 | * The "alg" attaches protocol-specific behaviour to this action: |
5845 | * | |
5846 | * The ALG is a 16-bit number which specifies that additional | |
5847 | * processing should be applied to this traffic. | |
5848 | * | |
5849 | * Protocol | Value | Meaning | |
5850 | * -------------------------------------------------------------------- | |
5851 | * None | 0 | No protocol-specific behaviour. | |
5852 | * FTP | 21 | Parse FTP control connections and observe the | |
5853 | * | | negotiation of related data connections. | |
5854 | * Other | Other | Unsupported protocols. | |
5855 | * | |
5856 | * By way of example, if FTP control connections have this action applied | |
5857 | * with the ALG set to FTP (21), then the connection tracker will observe | |
5858 | * the negotiation of data connections. This allows the connection | |
5859 | * tracker to identify subsequent data connections as "related" to this | |
5860 | * existing connection. The "related" flag will be populated in the | |
5861 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
5862 | * specified. | |
5863 | * | |
8e53fe8c JS |
5864 | * Zero or more actions may immediately follow this action. These actions will |
5865 | * be executed within the context of the connection tracker, and they require | |
a76a37ef | 5866 | * NX_CT_F_COMMIT flag be set. |
07659514 JS |
5867 | */ |
5868 | struct nx_action_conntrack { | |
5869 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5870 | ovs_be16 len; /* At least 24. */ | |
5871 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5872 | ovs_be16 subtype; /* NXAST_CT. */ | |
5873 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
5874 | * Unspecified flag bits must be zero. */ | |
5875 | ovs_be32 zone_src; /* Connection tracking context. */ | |
5876 | union { | |
5877 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
5878 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
5879 | }; | |
5880 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
5881 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
5882 | uint8_t pad[3]; /* Zeroes */ |
5883 | ovs_be16 alg; /* Well-known port number for the protocol. | |
5884 | * 0 indicates no ALG is required. */ | |
07659514 JS |
5885 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
5886 | * these is included in 'len'. */ | |
5887 | }; | |
5888 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
5889 | ||
5890 | static enum ofperr | |
5891 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
04f48a68 | 5892 | struct ofpact_conntrack *out, |
5c7c16d8 | 5893 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
07659514 JS |
5894 | { |
5895 | if (nac->zone_src) { | |
5896 | enum ofperr error; | |
5897 | ||
07659514 JS |
5898 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); |
5899 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5c7c16d8 YHW |
5900 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nac->zone_src), |
5901 | vl_mff_map, &out->zone_src.field, | |
5902 | tlv_bitmap); | |
5903 | if (error) { | |
5904 | return error; | |
04f48a68 YHW |
5905 | } |
5906 | ||
07659514 JS |
5907 | error = mf_check_src(&out->zone_src, NULL); |
5908 | if (error) { | |
5909 | return error; | |
5910 | } | |
5911 | ||
5912 | if (out->zone_src.n_bits != 16) { | |
5913 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
5914 | out->zone_src.n_bits); | |
5915 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
5916 | } | |
5917 | } else { | |
5918 | out->zone_src.field = NULL; | |
5919 | out->zone_imm = ntohs(nac->zone_imm); | |
5920 | } | |
5921 | ||
5922 | return 0; | |
5923 | } | |
5924 | ||
5925 | static enum ofperr | |
5926 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
04f48a68 | 5927 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
5928 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
5929 | struct ofpbuf *out) | |
07659514 | 5930 | { |
8e53fe8c | 5931 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 5932 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
a76a37ef JR |
5933 | int error; |
5934 | ||
07659514 | 5935 | conntrack->flags = ntohs(nac->flags); |
a76a37ef JR |
5936 | if (conntrack->flags & NX_CT_F_FORCE && |
5937 | !(conntrack->flags & NX_CT_F_COMMIT)) { | |
5938 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
5939 | goto out; | |
5940 | } | |
0a2869d5 | 5941 | |
5c7c16d8 | 5942 | error = decode_ct_zone(nac, conntrack, vl_mff_map, tlv_bitmap); |
07659514 JS |
5943 | if (error) { |
5944 | goto out; | |
5945 | } | |
5946 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 5947 | conntrack->alg = ntohs(nac->alg); |
07659514 | 5948 | |
8e53fe8c JS |
5949 | ofpbuf_pull(out, sizeof(*conntrack)); |
5950 | ||
0a2869d5 BP |
5951 | struct ofpbuf openflow = ofpbuf_const_initializer( |
5952 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
5953 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
5954 | ofp_version, | |
5955 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
5956 | out, OFPACT_CT, vl_mff_map, |
5957 | tlv_bitmap); | |
8e53fe8c JS |
5958 | if (error) { |
5959 | goto out; | |
5960 | } | |
5961 | ||
5962 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
5963 | out->header = &conntrack->ofpact; | |
ce058104 | 5964 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
5965 | |
5966 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
5967 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
5968 | const struct ofpact *a; |
5969 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
5970 | ||
5971 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
5972 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
5973 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
5974 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
5975 | "other than NAT without arguments are specified."); | |
5976 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
5977 | goto out; | |
5978 | } | |
5979 | } | |
8e53fe8c JS |
5980 | } |
5981 | ||
07659514 | 5982 | out: |
8e53fe8c | 5983 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
5984 | return error; |
5985 | } | |
5986 | ||
5987 | static void | |
5988 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 5989 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
5990 | { |
5991 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
5992 | const size_t ofs = out->size; |
5993 | size_t len; | |
07659514 JS |
5994 | |
5995 | nac = put_NXAST_CT(out); | |
5996 | nac->flags = htons(conntrack->flags); | |
5997 | if (conntrack->zone_src.field) { | |
04f48a68 | 5998 | nac->zone_src = htonl(nxm_header_from_mff(conntrack->zone_src.field)); |
07659514 JS |
5999 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, |
6000 | conntrack->zone_src.n_bits); | |
6001 | } else { | |
6002 | nac->zone_src = htonl(0); | |
6003 | nac->zone_imm = htons(conntrack->zone_imm); | |
6004 | } | |
6005 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 6006 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
6007 | |
6008 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
6009 | ofpact_ct_get_action_len(conntrack), | |
6010 | out, ofp_version); | |
6011 | len += sizeof(*nac); | |
6012 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
6013 | nac->len = htons(len); | |
07659514 JS |
6014 | } |
6015 | ||
50f96b10 | 6016 | static char *OVS_WARN_UNUSED_RESULT |
efefbcae | 6017 | parse_NAT(char *arg, const struct ofpact_parse_params *pp); |
9ac0aada | 6018 | |
07659514 | 6019 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
efefbcae | 6020 | * action to 'pp->ofpacts'. |
07659514 JS |
6021 | * |
6022 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6023 | * error. The caller is responsible for freeing the returned string. */ | |
6024 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6025 | parse_CT(char *arg, const struct ofpact_parse_params *pp) |
07659514 | 6026 | { |
efefbcae | 6027 | const size_t ct_offset = ofpacts_pull(pp->ofpacts); |
07659514 JS |
6028 | struct ofpact_conntrack *oc; |
6029 | char *error = NULL; | |
6030 | char *key, *value; | |
6031 | ||
efefbcae | 6032 | oc = ofpact_put_CT(pp->ofpacts); |
07659514 JS |
6033 | oc->flags = 0; |
6034 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
6035 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6036 | if (!strcmp(key, "commit")) { | |
6037 | oc->flags |= NX_CT_F_COMMIT; | |
a76a37ef JR |
6038 | } else if (!strcmp(key, "force")) { |
6039 | oc->flags |= NX_CT_F_FORCE; | |
07659514 | 6040 | } else if (!strcmp(key, "table")) { |
4bc938cc BP |
6041 | if (!ofputil_table_from_string(value, pp->table_map, |
6042 | &oc->recirc_table)) { | |
6043 | error = xasprintf("unknown table %s", value); | |
6044 | } else if (oc->recirc_table == NX_CT_RECIRC_NONE) { | |
fd13c6b5 | 6045 | error = xasprintf("invalid table %#"PRIx8, oc->recirc_table); |
07659514 JS |
6046 | } |
6047 | } else if (!strcmp(key, "zone")) { | |
6048 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
6049 | ||
6050 | if (error) { | |
6051 | free(error); | |
6052 | error = mf_parse_subfield(&oc->zone_src, value); | |
6053 | if (error) { | |
6054 | return error; | |
6055 | } | |
6056 | } | |
d787ad39 JS |
6057 | } else if (!strcmp(key, "alg")) { |
6058 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada | 6059 | } else if (!strcmp(key, "nat")) { |
efefbcae | 6060 | const size_t nat_offset = ofpacts_pull(pp->ofpacts); |
9ac0aada | 6061 | |
efefbcae | 6062 | error = parse_NAT(value, pp); |
9ac0aada | 6063 | /* Update CT action pointer and length. */ |
efefbcae BP |
6064 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, nat_offset); |
6065 | oc = pp->ofpacts->header; | |
8e53fe8c JS |
6066 | } else if (!strcmp(key, "exec")) { |
6067 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
6068 | * nesting can be handled transparently. */ | |
76e3e669 | 6069 | enum ofputil_protocol usable_protocols2; |
efefbcae | 6070 | const size_t exec_offset = ofpacts_pull(pp->ofpacts); |
76e3e669 | 6071 | |
76e3e669 JR |
6072 | /* Initializes 'usable_protocol2', fold it back to |
6073 | * '*usable_protocols' afterwards, so that we do not lose | |
6074 | * restrictions already in there. */ | |
efefbcae BP |
6075 | struct ofpact_parse_params pp2 = *pp; |
6076 | pp2.usable_protocols = &usable_protocols2; | |
6077 | error = ofpacts_parse_copy(value, &pp2, false, OFPACT_CT); | |
6078 | *pp->usable_protocols &= usable_protocols2; | |
6079 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, exec_offset); | |
6080 | oc = pp->ofpacts->header; | |
07659514 JS |
6081 | } else { |
6082 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
6083 | } | |
6084 | if (error) { | |
6085 | break; | |
6086 | } | |
6087 | } | |
fce16ca1 | 6088 | if (!error && oc->flags & NX_CT_F_FORCE && !(oc->flags & NX_CT_F_COMMIT)) { |
a76a37ef JR |
6089 | error = xasprintf("\"force\" flag requires \"commit\" flag."); |
6090 | } | |
efefbcae BP |
6091 | ofpact_finish_CT(pp->ofpacts, &oc); |
6092 | ofpbuf_push_uninit(pp->ofpacts, ct_offset); | |
07659514 JS |
6093 | return error; |
6094 | } | |
6095 | ||
d787ad39 JS |
6096 | static void |
6097 | format_alg(int port, struct ds *s) | |
6098 | { | |
40c7b2fc JS |
6099 | switch(port) { |
6100 | case IPPORT_FTP: | |
b1c5bf1f | 6101 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
6102 | break; |
6103 | case IPPORT_TFTP: | |
6104 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
6105 | break; | |
6106 | case 0: | |
6107 | /* Don't print. */ | |
6108 | break; | |
6109 | default: | |
b1c5bf1f | 6110 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 6111 | break; |
d787ad39 JS |
6112 | } |
6113 | } | |
6114 | ||
50f96b10 | 6115 | static void format_NAT(const struct ofpact_nat *, |
efefbcae | 6116 | const struct ofpact_format_params *fp); |
9ac0aada | 6117 | |
07659514 | 6118 | static void |
50f96b10 | 6119 | format_CT(const struct ofpact_conntrack *a, |
efefbcae | 6120 | const struct ofpact_format_params *fp) |
07659514 | 6121 | { |
efefbcae | 6122 | ds_put_format(fp->s, "%sct(%s", colors.paren, colors.end); |
07659514 | 6123 | if (a->flags & NX_CT_F_COMMIT) { |
efefbcae | 6124 | ds_put_format(fp->s, "%scommit%s,", colors.value, colors.end); |
07659514 | 6125 | } |
a76a37ef | 6126 | if (a->flags & NX_CT_F_FORCE) { |
efefbcae | 6127 | ds_put_format(fp->s, "%sforce%s,", colors.value, colors.end); |
a76a37ef | 6128 | } |
07659514 | 6129 | if (a->recirc_table != NX_CT_RECIRC_NONE) { |
4bc938cc BP |
6130 | ds_put_format(fp->s, "%stable=%s", colors.special, colors.end); |
6131 | ofputil_format_table(a->recirc_table, fp->table_map, fp->s); | |
6132 | ds_put_char(fp->s, ','); | |
07659514 JS |
6133 | } |
6134 | if (a->zone_src.field) { | |
efefbcae BP |
6135 | ds_put_format(fp->s, "%szone=%s", colors.param, colors.end); |
6136 | mf_format_subfield(&a->zone_src, fp->s); | |
6137 | ds_put_char(fp->s, ','); | |
07659514 | 6138 | } else if (a->zone_imm) { |
efefbcae | 6139 | ds_put_format(fp->s, "%szone=%s%"PRIu16",", |
b1c5bf1f | 6140 | colors.param, colors.end, a->zone_imm); |
07659514 | 6141 | } |
9ac0aada JR |
6142 | /* If the first action is a NAT action, format it outside of the 'exec' |
6143 | * envelope. */ | |
6144 | const struct ofpact *action = a->actions; | |
6145 | size_t actions_len = ofpact_ct_get_action_len(a); | |
6146 | if (actions_len && action->type == OFPACT_NAT) { | |
efefbcae BP |
6147 | format_NAT(ofpact_get_NAT(action), fp); |
6148 | ds_put_char(fp->s, ','); | |
9ac0aada JR |
6149 | actions_len -= OFPACT_ALIGN(action->len); |
6150 | action = ofpact_next(action); | |
6151 | } | |
6152 | if (actions_len) { | |
efefbcae BP |
6153 | ds_put_format(fp->s, "%sexec(%s", colors.paren, colors.end); |
6154 | ofpacts_format(action, actions_len, fp); | |
6155 | ds_put_format(fp->s, "%s),%s", colors.paren, colors.end); | |
8e53fe8c | 6156 | } |
efefbcae BP |
6157 | format_alg(a->alg, fp->s); |
6158 | ds_chomp(fp->s, ','); | |
6159 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
07659514 | 6160 | } |
9ac0aada | 6161 | \f |
72fe7578 BP |
6162 | /* ct_clear action. */ |
6163 | ||
6164 | static enum ofperr | |
6165 | decode_NXAST_RAW_CT_CLEAR(struct ofpbuf *out) | |
6166 | { | |
6167 | ofpact_put_CT_CLEAR(out); | |
6168 | return 0; | |
6169 | } | |
6170 | ||
6171 | static void | |
6172 | encode_CT_CLEAR(const struct ofpact_null *null OVS_UNUSED, | |
6173 | enum ofp_version ofp_version OVS_UNUSED, | |
6174 | struct ofpbuf *out) | |
6175 | { | |
6176 | put_NXAST_CT_CLEAR(out); | |
6177 | } | |
6178 | ||
6179 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6180 | parse_CT_CLEAR(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
72fe7578 | 6181 | { |
efefbcae | 6182 | ofpact_put_CT_CLEAR(pp->ofpacts); |
72fe7578 BP |
6183 | return NULL; |
6184 | } | |
6185 | ||
6186 | static void | |
50f96b10 | 6187 | format_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6188 | const struct ofpact_format_params *fp) |
72fe7578 | 6189 | { |
efefbcae | 6190 | ds_put_format(fp->s, "%sct_clear%s", colors.value, colors.end); |
50f96b10 BP |
6191 | } |
6192 | \f | |
9ac0aada JR |
6193 | /* NAT action. */ |
6194 | ||
6195 | /* Which optional fields are present? */ | |
6196 | enum nx_nat_range { | |
6197 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
6198 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
6199 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
6200 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
6201 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
6202 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
6203 | }; | |
6204 | ||
6205 | /* Action structure for NXAST_NAT. */ | |
6206 | struct nx_action_nat { | |
6207 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6208 | ovs_be16 len; /* At least 16. */ | |
6209 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6210 | ovs_be16 subtype; /* NXAST_NAT. */ | |
6211 | uint8_t pad[2]; /* Must be zero. */ | |
6212 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
6213 | * Unspecified flag bits must be zero. */ | |
6214 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
6215 | /* Followed by optional parameters as specified by 'range_present' */ | |
6216 | }; | |
6217 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
6218 | ||
6219 | static void | |
6220 | encode_NAT(const struct ofpact_nat *nat, | |
6221 | enum ofp_version ofp_version OVS_UNUSED, | |
6222 | struct ofpbuf *out) | |
6223 | { | |
6224 | struct nx_action_nat *nan; | |
6225 | const size_t ofs = out->size; | |
6226 | uint16_t range_present = 0; | |
6227 | ||
6228 | nan = put_NXAST_NAT(out); | |
6229 | nan->flags = htons(nat->flags); | |
6230 | if (nat->range_af == AF_INET) { | |
6231 | if (nat->range.addr.ipv4.min) { | |
6232 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6233 | *min = nat->range.addr.ipv4.min; | |
6234 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
6235 | } | |
6236 | if (nat->range.addr.ipv4.max) { | |
6237 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6238 | *max = nat->range.addr.ipv4.max; | |
6239 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
6240 | } | |
6241 | } else if (nat->range_af == AF_INET6) { | |
6242 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6243 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
6244 | *min = nat->range.addr.ipv6.min; | |
6245 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
6246 | } | |
6247 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
6248 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
6249 | *max = nat->range.addr.ipv6.max; | |
6250 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
6251 | } | |
6252 | } | |
6253 | if (nat->range_af != AF_UNSPEC) { | |
6254 | if (nat->range.proto.min) { | |
6255 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6256 | *min = htons(nat->range.proto.min); | |
6257 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
6258 | } | |
6259 | if (nat->range.proto.max) { | |
6260 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6261 | *max = htons(nat->range.proto.max); | |
6262 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
6263 | } | |
6264 | } | |
6265 | pad_ofpat(out, ofs); | |
6266 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
6267 | nan->range_present = htons(range_present); | |
6268 | } | |
6269 | ||
6270 | static enum ofperr | |
6271 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
6272 | enum ofp_version ofp_version OVS_UNUSED, | |
6273 | struct ofpbuf *out) | |
6274 | { | |
6275 | struct ofpact_nat *nat; | |
6276 | uint16_t range_present = ntohs(nan->range_present); | |
6277 | const char *opts = (char *)(nan + 1); | |
6278 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
6279 | ||
6280 | nat = ofpact_put_NAT(out); | |
6281 | nat->flags = ntohs(nan->flags); | |
6282 | ||
ae8b9260 JR |
6283 | /* Check for unknown or mutually exclusive flags. */ |
6284 | if ((nat->flags & ~NX_NAT_F_MASK) | |
6285 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
6286 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
6287 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
6288 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6289 | } | |
6290 | ||
9ac0aada JR |
6291 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
6292 | (LEN >= sizeof(TYPE) \ | |
6293 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
6294 | SRC += sizeof(TYPE)) \ | |
6295 | : NULL) | |
6296 | ||
6297 | nat->range_af = AF_UNSPEC; | |
6298 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
6299 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
6300 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6301 | } | |
6302 | ||
6303 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
6304 | || !nat->range.addr.ipv4.min) { | |
6305 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6306 | } | |
6307 | ||
6308 | nat->range_af = AF_INET; | |
6309 | ||
6310 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6311 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
6312 | ovs_be32)) { | |
6313 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6314 | } | |
6315 | if (ntohl(nat->range.addr.ipv4.max) | |
6316 | < ntohl(nat->range.addr.ipv4.min)) { | |
6317 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6318 | } | |
6319 | } | |
6320 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6321 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6322 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
6323 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
6324 | struct in6_addr) | |
6325 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6326 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6327 | } | |
6328 | ||
6329 | nat->range_af = AF_INET6; | |
6330 | ||
6331 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6332 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
6333 | struct in6_addr)) { | |
6334 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6335 | } | |
6336 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
6337 | sizeof(struct in6_addr)) < 0) { | |
6338 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6339 | } | |
6340 | } | |
6341 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6342 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6343 | } | |
6344 | ||
6345 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
6346 | ovs_be16 proto; | |
6347 | ||
6348 | if (nat->range_af == AF_UNSPEC) { | |
6349 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6350 | } | |
6351 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
6352 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6353 | } | |
6354 | nat->range.proto.min = ntohs(proto); | |
6355 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6356 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
6357 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6358 | } | |
6359 | nat->range.proto.max = ntohs(proto); | |
6360 | if (nat->range.proto.max < nat->range.proto.min) { | |
6361 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6362 | } | |
6363 | } | |
6364 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6365 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6366 | } | |
6367 | ||
6368 | return 0; | |
6369 | } | |
6370 | ||
6371 | static void | |
efefbcae | 6372 | format_NAT(const struct ofpact_nat *a, const struct ofpact_format_params *fp) |
9ac0aada | 6373 | { |
efefbcae | 6374 | ds_put_format(fp->s, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
6375 | |
6376 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
efefbcae BP |
6377 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
6378 | ds_put_format(fp->s, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
b1c5bf1f | 6379 | colors.param, colors.end); |
9ac0aada JR |
6380 | |
6381 | if (a->range_af != AF_UNSPEC) { | |
efefbcae | 6382 | ds_put_format(fp->s, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
6383 | |
6384 | if (a->range_af == AF_INET) { | |
efefbcae | 6385 | ds_put_format(fp->s, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); |
9ac0aada JR |
6386 | |
6387 | if (a->range.addr.ipv4.max | |
6388 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
efefbcae | 6389 | ds_put_format(fp->s, "-"IP_FMT, |
9ac0aada JR |
6390 | IP_ARGS(a->range.addr.ipv4.max)); |
6391 | } | |
6392 | } else if (a->range_af == AF_INET6) { | |
efefbcae | 6393 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, fp->s, |
9ac0aada JR |
6394 | a->range.proto.min); |
6395 | ||
6396 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
6397 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
6398 | sizeof(struct in6_addr)) != 0) { | |
efefbcae BP |
6399 | ds_put_char(fp->s, '-'); |
6400 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, fp->s, | |
9ac0aada JR |
6401 | a->range.proto.min); |
6402 | } | |
6403 | } | |
6404 | if (a->range.proto.min) { | |
efefbcae BP |
6405 | ds_put_char(fp->s, ':'); |
6406 | ds_put_format(fp->s, "%"PRIu16, a->range.proto.min); | |
9ac0aada JR |
6407 | |
6408 | if (a->range.proto.max | |
6409 | && a->range.proto.max != a->range.proto.min) { | |
efefbcae | 6410 | ds_put_format(fp->s, "-%"PRIu16, a->range.proto.max); |
9ac0aada JR |
6411 | } |
6412 | } | |
efefbcae | 6413 | ds_put_char(fp->s, ','); |
9ac0aada JR |
6414 | |
6415 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
efefbcae | 6416 | ds_put_format(fp->s, "%spersistent%s,", |
b1c5bf1f | 6417 | colors.value, colors.end); |
9ac0aada JR |
6418 | } |
6419 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
efefbcae | 6420 | ds_put_format(fp->s, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
6421 | } |
6422 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
efefbcae | 6423 | ds_put_format(fp->s, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
6424 | } |
6425 | } | |
efefbcae BP |
6426 | ds_chomp(fp->s, ','); |
6427 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
9ac0aada JR |
6428 | } |
6429 | } | |
6430 | ||
6431 | static char * OVS_WARN_UNUSED_RESULT | |
6432 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
6433 | { | |
6434 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
6435 | int n = 0; | |
6436 | ||
6437 | on->range_af = AF_UNSPEC; | |
6438 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6439 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
6440 | on->range_af = AF_INET; | |
6441 | ||
6442 | if (s[n] == '-') { | |
6443 | n++; | |
6444 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6445 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
6446 | || (ntohl(on->range.addr.ipv4.max) | |
6447 | < ntohl(on->range.addr.ipv4.min))) { | |
6448 | goto error; | |
6449 | } | |
6450 | } | |
6451 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
6452 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
6453 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
6454 | on->range_af = AF_INET6; | |
6455 | ||
6456 | if (s[n] == '-') { | |
6457 | n++; | |
6458 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
6459 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
6460 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
6461 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
6462 | sizeof on->range.addr.ipv6.max) < 0) { | |
6463 | goto error; | |
6464 | } | |
6465 | } | |
6466 | } | |
6467 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
6468 | n++; | |
6469 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
6470 | goto error; | |
6471 | } | |
6472 | if (s[n] == '-') { | |
6473 | n++; | |
6474 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
6475 | || on->range.proto.max < on->range.proto.min) { | |
6476 | goto error; | |
6477 | } | |
6478 | } | |
6479 | } | |
6480 | if (strlen(s) != n) { | |
6481 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
6482 | &s[n], s, n); | |
6483 | } | |
6484 | return NULL; | |
6485 | error: | |
6486 | return xasprintf("invalid nat range \"%s\"", s); | |
6487 | } | |
6488 | ||
6489 | ||
6490 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
efefbcae | 6491 | * action to 'pp->ofpacts'. |
9ac0aada JR |
6492 | * |
6493 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6494 | * error. The caller is responsible for freeing the returned string. */ | |
6495 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6496 | parse_NAT(char *arg, const struct ofpact_parse_params *pp) |
9ac0aada | 6497 | { |
efefbcae | 6498 | struct ofpact_nat *on = ofpact_put_NAT(pp->ofpacts); |
9ac0aada JR |
6499 | char *key, *value; |
6500 | ||
6501 | on->flags = 0; | |
6502 | on->range_af = AF_UNSPEC; | |
6503 | ||
6504 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6505 | char *error = NULL; | |
6506 | ||
6507 | if (!strcmp(key, "src")) { | |
6508 | on->flags |= NX_NAT_F_SRC; | |
6509 | error = str_to_nat_range(value, on); | |
6510 | } else if (!strcmp(key, "dst")) { | |
6511 | on->flags |= NX_NAT_F_DST; | |
6512 | error = str_to_nat_range(value, on); | |
6513 | } else if (!strcmp(key, "persistent")) { | |
6514 | on->flags |= NX_NAT_F_PERSISTENT; | |
6515 | } else if (!strcmp(key, "hash")) { | |
6516 | on->flags |= NX_NAT_F_PROTO_HASH; | |
6517 | } else if (!strcmp(key, "random")) { | |
6518 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
6519 | } else { | |
6520 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
6521 | key); | |
6522 | } | |
6523 | if (error) { | |
6524 | return error; | |
6525 | } | |
6526 | } | |
6527 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 6528 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
6529 | } |
6530 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
6531 | if (on->flags) { | |
ae8b9260 | 6532 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
6533 | } |
6534 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 6535 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
6536 | } |
6537 | } | |
ae8b9260 JR |
6538 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
6539 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
6540 | } | |
6541 | ||
9ac0aada JR |
6542 | return NULL; |
6543 | } | |
6544 | ||
aaca4fe0 WT |
6545 | /* Truncate output action. */ |
6546 | struct nx_action_output_trunc { | |
6547 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6548 | ovs_be16 len; /* At least 16. */ | |
6549 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6550 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
6551 | ovs_be16 port; /* Output port */ | |
6552 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
6553 | }; | |
6554 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
6555 | ||
6556 | static enum ofperr | |
6557 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
6558 | enum ofp_version ofp_version OVS_UNUSED, | |
6559 | struct ofpbuf *out) | |
6560 | { | |
6561 | struct ofpact_output_trunc *output_trunc; | |
6562 | ||
6563 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
6564 | output_trunc->max_len = ntohl(natrc->max_len); | |
6565 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
6566 | ||
6567 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
6568 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6569 | } | |
6570 | return 0; | |
6571 | } | |
6572 | ||
6573 | static void | |
6574 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
6575 | enum ofp_version ofp_version OVS_UNUSED, | |
6576 | struct ofpbuf *out) | |
6577 | { | |
6578 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
6579 | ||
6580 | natrc->max_len = htonl(output_trunc->max_len); | |
6581 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
6582 | } | |
6583 | ||
6584 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 6585 | parse_OUTPUT_TRUNC(const char *arg, |
efefbcae | 6586 | const struct ofpact_parse_params *pp OVS_UNUSED) |
aaca4fe0 WT |
6587 | { |
6588 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
6589 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
6590 | return xasprintf("unknown action %s", arg); | |
6591 | } | |
6592 | ||
6593 | static void | |
50f96b10 | 6594 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, |
efefbcae | 6595 | const struct ofpact_format_params *fp) |
aaca4fe0 | 6596 | { |
efefbcae BP |
6597 | ds_put_format(fp->s, "%soutput%s(port=", colors.special, colors.end); |
6598 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
6599 | ds_put_format(fp->s, ",max_len=%"PRIu32")", a->max_len); | |
aaca4fe0 WT |
6600 | } |
6601 | ||
d4abaff5 | 6602 | \f |
c2d936a4 BP |
6603 | /* Meter instruction. */ |
6604 | ||
6605 | static void | |
6606 | encode_METER(const struct ofpact_meter *meter, | |
6607 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6608 | { | |
6609 | if (ofp_version >= OFP13_VERSION) { | |
6610 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
6611 | } | |
6612 | } | |
6613 | ||
cab50449 | 6614 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6615 | parse_METER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6616 | { |
efefbcae BP |
6617 | *pp->usable_protocols &= OFPUTIL_P_OF13_UP; |
6618 | return str_to_u32(arg, &ofpact_put_METER(pp->ofpacts)->meter_id); | |
c2d936a4 BP |
6619 | } |
6620 | ||
6621 | static void | |
50f96b10 | 6622 | format_METER(const struct ofpact_meter *a, |
efefbcae | 6623 | const struct ofpact_format_params *fp) |
c2d936a4 | 6624 | { |
efefbcae | 6625 | ds_put_format(fp->s, "%smeter:%s%"PRIu32, |
b1c5bf1f | 6626 | colors.param, colors.end, a->meter_id); |
c2d936a4 BP |
6627 | } |
6628 | \f | |
6629 | /* Clear-Actions instruction. */ | |
6630 | ||
6631 | static void | |
6632 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
6633 | enum ofp_version ofp_version OVS_UNUSED, | |
6634 | struct ofpbuf *out OVS_UNUSED) | |
6635 | { | |
6636 | if (ofp_version > OFP10_VERSION) { | |
6637 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
6638 | } | |
6639 | } | |
6640 | ||
cab50449 | 6641 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6642 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 6643 | { |
efefbcae | 6644 | ofpact_put_CLEAR_ACTIONS(pp->ofpacts); |
c2d936a4 BP |
6645 | return NULL; |
6646 | } | |
6647 | ||
6648 | static void | |
50f96b10 | 6649 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6650 | const struct ofpact_format_params *fp) |
c2d936a4 | 6651 | { |
efefbcae | 6652 | ds_put_format(fp->s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 BP |
6653 | } |
6654 | \f | |
6655 | /* Write-Actions instruction. */ | |
6656 | ||
6657 | static void | |
6658 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
6659 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6660 | { | |
6661 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 6662 | const size_t ofs = out->size; |
c2d936a4 BP |
6663 | |
6664 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
6665 | ofpacts_put_openflow_actions(actions->actions, | |
6666 | ofpact_nest_get_action_len(actions), | |
6667 | out, ofp_version); | |
6668 | ofpacts_update_instruction_actions(out, ofs); | |
6669 | } | |
6670 | } | |
6671 | ||
cab50449 | 6672 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6673 | parse_WRITE_ACTIONS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6674 | { |
efefbcae | 6675 | size_t ofs = ofpacts_pull(pp->ofpacts); |
c2d936a4 BP |
6676 | struct ofpact_nest *on; |
6677 | char *error; | |
c2d936a4 BP |
6678 | |
6679 | /* Add a Write-Actions instruction and then pull it off. */ | |
efefbcae BP |
6680 | ofpact_put(pp->ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); |
6681 | ofpbuf_pull(pp->ofpacts, sizeof *on); | |
c2d936a4 BP |
6682 | |
6683 | /* Parse nested actions. | |
6684 | * | |
6685 | * We pulled off "write-actions" and the previous actions because the | |
6686 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
6687 | * that it doesn't actually include the nested actions. That means that | |
6688 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
6689 | * follows a Write-Actions, which is an invalid order. */ | |
efefbcae | 6690 | error = ofpacts_parse(arg, pp, false, OFPACT_WRITE_ACTIONS); |
c2d936a4 BP |
6691 | |
6692 | /* Put the Write-Actions back on and update its length. */ | |
efefbcae BP |
6693 | on = ofpbuf_push_uninit(pp->ofpacts, sizeof *on); |
6694 | on->ofpact.len = pp->ofpacts->size; | |
c2d936a4 BP |
6695 | |
6696 | /* Put any previous actions or instructions back on. */ | |
efefbcae | 6697 | ofpbuf_push_uninit(pp->ofpacts, ofs); |
c2d936a4 BP |
6698 | |
6699 | return error; | |
6700 | } | |
6701 | ||
6702 | static void | |
50f96b10 | 6703 | format_WRITE_ACTIONS(const struct ofpact_nest *a, |
efefbcae | 6704 | const struct ofpact_format_params *fp) |
c2d936a4 | 6705 | { |
efefbcae BP |
6706 | ds_put_format(fp->s, "%swrite_actions(%s", colors.paren, colors.end); |
6707 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
6708 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 BP |
6709 | } |
6710 | \f | |
6711 | /* Action structure for NXAST_WRITE_METADATA. | |
6712 | * | |
6713 | * Modifies the 'mask' bits of the metadata value. */ | |
6714 | struct nx_action_write_metadata { | |
6715 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6716 | ovs_be16 len; /* Length is 32. */ | |
6717 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6718 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
6719 | uint8_t zeros[6]; /* Must be zero. */ | |
6720 | ovs_be64 metadata; /* Metadata register. */ | |
6721 | ovs_be64 mask; /* Metadata mask. */ | |
6722 | }; | |
6723 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
6724 | ||
6725 | static enum ofperr | |
6726 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 6727 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
6728 | struct ofpbuf *out) |
6729 | { | |
6730 | struct ofpact_metadata *om; | |
6731 | ||
6732 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
6733 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6734 | } | |
6735 | ||
6736 | om = ofpact_put_WRITE_METADATA(out); | |
6737 | om->metadata = nawm->metadata; | |
6738 | om->mask = nawm->mask; | |
6739 | ||
6740 | return 0; | |
6741 | } | |
6742 | ||
6743 | static void | |
6744 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
6745 | enum ofp_version ofp_version, struct ofpbuf *out) | |
6746 | { | |
6747 | if (ofp_version == OFP10_VERSION) { | |
6748 | struct nx_action_write_metadata *nawm; | |
6749 | ||
6750 | nawm = put_NXAST_WRITE_METADATA(out); | |
6751 | nawm->metadata = metadata->metadata; | |
6752 | nawm->mask = metadata->mask; | |
6753 | } else { | |
6754 | struct ofp11_instruction_write_metadata *oiwm; | |
6755 | ||
6756 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
6757 | oiwm->metadata = metadata->metadata; | |
6758 | oiwm->metadata_mask = metadata->mask; | |
6759 | } | |
6760 | } | |
6761 | ||
cab50449 | 6762 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6763 | parse_WRITE_METADATA(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
6764 | { |
6765 | struct ofpact_metadata *om; | |
6766 | char *mask = strchr(arg, '/'); | |
6767 | ||
efefbcae | 6768 | *pp->usable_protocols &= OFPUTIL_P_NXM_OF11_UP; |
c2d936a4 | 6769 | |
efefbcae | 6770 | om = ofpact_put_WRITE_METADATA(pp->ofpacts); |
c2d936a4 BP |
6771 | if (mask) { |
6772 | char *error; | |
6773 | ||
6774 | *mask = '\0'; | |
6775 | error = str_to_be64(mask + 1, &om->mask); | |
6776 | if (error) { | |
6777 | return error; | |
6778 | } | |
6779 | } else { | |
6780 | om->mask = OVS_BE64_MAX; | |
6781 | } | |
6782 | ||
6783 | return str_to_be64(arg, &om->metadata); | |
6784 | } | |
6785 | ||
6786 | static void | |
50f96b10 | 6787 | format_WRITE_METADATA(const struct ofpact_metadata *a, |
efefbcae | 6788 | const struct ofpact_format_params *fp) |
c2d936a4 | 6789 | { |
efefbcae | 6790 | ds_put_format(fp->s, "%swrite_metadata:%s%#"PRIx64, |
b1c5bf1f | 6791 | colors.param, colors.end, ntohll(a->metadata)); |
c2d936a4 | 6792 | if (a->mask != OVS_BE64_MAX) { |
efefbcae | 6793 | ds_put_format(fp->s, "/%#"PRIx64, ntohll(a->mask)); |
c2d936a4 | 6794 | } |
4cceacb9 | 6795 | } |
f25d0cf3 | 6796 | \f |
c2d936a4 | 6797 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
6798 | |
6799 | static void | |
c2d936a4 BP |
6800 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
6801 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 6802 | { |
c2d936a4 BP |
6803 | if (ofp_version == OFP10_VERSION) { |
6804 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 6805 | |
c2d936a4 BP |
6806 | nar = put_NXAST_RESUBMIT_TABLE(out); |
6807 | nar->table = goto_table->table_id; | |
6808 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
6809 | } else { | |
6810 | struct ofp11_instruction_goto_table *oigt; | |
6811 | ||
6812 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
6813 | oigt->table_id = goto_table->table_id; | |
6814 | memset(oigt->pad, 0, sizeof oigt->pad); | |
6815 | } | |
6816 | } | |
6817 | ||
cab50449 | 6818 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6819 | parse_GOTO_TABLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6820 | { |
efefbcae | 6821 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(pp->ofpacts); |
4bc938cc BP |
6822 | if (!ofputil_table_from_string(arg, pp->table_map, &ogt->table_id)) { |
6823 | return xasprintf("unknown table \"%s\"", arg); | |
c2d936a4 | 6824 | } |
4bc938cc | 6825 | return NULL; |
c2d936a4 BP |
6826 | } |
6827 | ||
6828 | static void | |
50f96b10 | 6829 | format_GOTO_TABLE(const struct ofpact_goto_table *a, |
efefbcae | 6830 | const struct ofpact_format_params *fp) |
c2d936a4 | 6831 | { |
4bc938cc BP |
6832 | ds_put_format(fp->s, "%sgoto_table:%s", colors.param, colors.end); |
6833 | ofputil_format_table(a->table_id, fp->table_map, fp->s); | |
c2d936a4 BP |
6834 | } |
6835 | \f | |
6836 | static void | |
5ad4b3f8 | 6837 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
6838 | const struct ofp_action_header *bad_action, enum ofperr error) |
6839 | { | |
6840 | if (!VLOG_DROP_WARN(&rl)) { | |
6841 | struct ds s; | |
6842 | ||
6843 | ds_init(&s); | |
5ad4b3f8 | 6844 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
6845 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
6846 | (char *)bad_action - (char *)actions, | |
6847 | ofperr_get_name(error), ds_cstr(&s)); | |
6848 | ds_destroy(&s); | |
6849 | } | |
6850 | } | |
6851 | ||
6852 | static enum ofperr | |
6853 | ofpacts_decode(const void *actions, size_t actions_len, | |
04f48a68 | 6854 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
6855 | const struct vl_mff_map *vl_mff_map, |
6856 | uint64_t *ofpacts_tlv_bitmap, struct ofpbuf *ofpacts) | |
c2d936a4 | 6857 | { |
0a2869d5 | 6858 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
6859 | while (openflow.size) { |
6860 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
6861 | enum ofp_raw_action_type raw; |
6862 | enum ofperr error; | |
6863 | uint64_t arg; | |
6864 | ||
6865 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
6866 | if (!error) { | |
04f48a68 | 6867 | error = ofpact_decode(action, raw, ofp_version, arg, vl_mff_map, |
5c7c16d8 | 6868 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
6869 | } |
6870 | ||
6871 | if (error) { | |
5ad4b3f8 | 6872 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
6873 | return error; |
6874 | } | |
6875 | } | |
c2d936a4 BP |
6876 | return 0; |
6877 | } | |
6878 | ||
6879 | static enum ofperr | |
6880 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
6881 | unsigned int actions_len, | |
6882 | enum ofp_version version, | |
6883 | uint32_t allowed_ovsinsts, | |
d824b5b7 | 6884 | struct ofpbuf *ofpacts, |
04f48a68 | 6885 | enum ofpact_type outer_action, |
5c7c16d8 YHW |
6886 | const struct vl_mff_map *vl_mff_map, |
6887 | uint64_t *ofpacts_tlv_bitmap) | |
c2d936a4 BP |
6888 | { |
6889 | const struct ofp_action_header *actions; | |
9abca1e5 | 6890 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
6891 | enum ofperr error; |
6892 | ||
c2d936a4 BP |
6893 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
6894 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
6895 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
6896 | return OFPERR_OFPBRC_BAD_LEN; | |
6897 | } | |
6898 | ||
6899 | actions = ofpbuf_try_pull(openflow, actions_len); | |
6900 | if (actions == NULL) { | |
6901 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
6902 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 6903 | actions_len, openflow->size); |
c2d936a4 BP |
6904 | return OFPERR_OFPBRC_BAD_LEN; |
6905 | } | |
6906 | ||
5c7c16d8 YHW |
6907 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
6908 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 | 6909 | if (error) { |
9abca1e5 | 6910 | ofpacts->size = orig_size; |
c2d936a4 BP |
6911 | return error; |
6912 | } | |
6913 | ||
d824b5b7 JS |
6914 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
6915 | outer_action); | |
c2d936a4 | 6916 | if (error) { |
9abca1e5 | 6917 | ofpacts->size = orig_size; |
c2d936a4 BP |
6918 | } |
6919 | return error; | |
6920 | } | |
6921 | ||
9abca1e5 BP |
6922 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
6923 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
6924 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
6925 | * Returns 0 if successful, otherwise an OpenFlow error. |
6926 | * | |
6927 | * Actions are processed according to their OpenFlow version which | |
6928 | * is provided in the 'version' parameter. | |
6929 | * | |
6930 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
6931 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
6932 | * function. | |
6933 | * | |
5c7c16d8 YHW |
6934 | * 'vl_mff_map' and 'ofpacts_tlv_bitmap' are optional. If 'vl_mff_map' is |
6935 | * provided, it is used to get variable length mf_fields with configured | |
6936 | * length in the actions. If an action uses a variable length mf_field, | |
6937 | * 'ofpacts_tlv_bitmap' is updated accordingly for ref counting. If | |
6938 | * 'vl_mff_map' is not provided, the default mf_fields with maximum length | |
6939 | * will be used. | |
6940 | * | |
c2d936a4 BP |
6941 | * The parsed actions are valid generically, but they may not be valid in a |
6942 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
6943 | * generically, but specific datapaths may only support port numbers in a | |
6944 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
6945 | * valid in a specific context. */ | |
6946 | enum ofperr | |
6947 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
6948 | unsigned int actions_len, | |
6949 | enum ofp_version version, | |
04f48a68 | 6950 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 6951 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
6952 | struct ofpbuf *ofpacts) |
6953 | { | |
6954 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
6955 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
6956 | ofpacts, 0, vl_mff_map, |
6957 | ofpacts_tlv_bitmap); | |
c2d936a4 BP |
6958 | } |
6959 | \f | |
39d4382e | 6960 | /* OpenFlow 1.1 action sets. */ |
c2d936a4 | 6961 | |
39d4382e KS |
6962 | /* Append ofpact 'a' onto the tail of 'out' */ |
6963 | static void | |
6964 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) | |
6965 | { | |
6966 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); | |
6967 | } | |
c2d936a4 | 6968 | |
39d4382e KS |
6969 | /* The order in which actions in an action set get executed. This is only for |
6970 | * the actions where only the last instance added is used. */ | |
6971 | #define ACTION_SET_ORDER \ | |
6972 | SLOT(OFPACT_STRIP_VLAN) \ | |
6973 | SLOT(OFPACT_POP_MPLS) \ | |
6974 | SLOT(OFPACT_DECAP) \ | |
6975 | SLOT(OFPACT_ENCAP) \ | |
6976 | SLOT(OFPACT_PUSH_MPLS) \ | |
6977 | SLOT(OFPACT_PUSH_VLAN) \ | |
6978 | SLOT(OFPACT_DEC_TTL) \ | |
6979 | SLOT(OFPACT_DEC_MPLS_TTL) \ | |
6980 | SLOT(OFPACT_DEC_NSH_TTL) | |
6981 | ||
6982 | /* Priority for "final actions" in an action set. An action set only gets | |
6983 | * executed at all if at least one of these actions is present. If more than | |
6984 | * one is present, then only the one later in this list is executed (and if | |
6985 | * more than one of a given type, the one later in the action set). */ | |
6986 | #define ACTION_SET_FINAL_PRIORITY \ | |
6987 | FINAL(OFPACT_CT) \ | |
6988 | FINAL(OFPACT_CT_CLEAR) \ | |
6989 | FINAL(OFPACT_RESUBMIT) \ | |
6990 | FINAL(OFPACT_OUTPUT) \ | |
6991 | FINAL(OFPACT_GROUP) | |
6992 | ||
6993 | enum action_set_class { | |
6994 | /* Actions that individually can usefully appear only once in an action | |
6995 | * set. If they do appear more than once, then only the last instance is | |
6996 | * honored. */ | |
6997 | #define SLOT(OFPACT) ACTION_SLOT_##OFPACT, | |
6998 | ACTION_SET_ORDER | |
6999 | #undef SLOT | |
7000 | ||
7001 | /* Final actions. */ | |
7002 | #define FINAL(OFPACT) ACTION_SLOT_##OFPACT, | |
7003 | ACTION_SET_FINAL_PRIORITY | |
7004 | #undef FINAL | |
7005 | ||
7006 | /* Actions that can appear in an action set more than once and are executed | |
7007 | * in order. */ | |
7008 | ACTION_SLOT_SET_OR_MOVE, | |
7009 | ||
7010 | /* Actions that shouldn't appear in the action set at all. */ | |
7011 | ACTION_SLOT_INVALID | |
7012 | }; | |
7013 | ||
7014 | /* Count the action set slots. */ | |
7015 | #define SLOT(OFPACT) +1 | |
7016 | enum { N_ACTION_SLOTS = ACTION_SET_ORDER }; | |
7017 | #undef SLOT | |
7018 | ||
7019 | static enum action_set_class | |
7020 | action_set_classify(const struct ofpact *a) | |
c2d936a4 BP |
7021 | { |
7022 | switch (a->type) { | |
39d4382e KS |
7023 | #define SLOT(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; |
7024 | ACTION_SET_ORDER | |
7025 | #undef SLOT | |
7026 | ||
7027 | #define FINAL(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; | |
7028 | ACTION_SET_FINAL_PRIORITY | |
7029 | #undef FINAL | |
7030 | ||
c2d936a4 | 7031 | case OFPACT_SET_FIELD: |
1b0ee636 | 7032 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
7033 | case OFPACT_SET_ETH_DST: |
7034 | case OFPACT_SET_ETH_SRC: | |
7035 | case OFPACT_SET_IP_DSCP: | |
7036 | case OFPACT_SET_IP_ECN: | |
7037 | case OFPACT_SET_IP_TTL: | |
7038 | case OFPACT_SET_IPV4_DST: | |
7039 | case OFPACT_SET_IPV4_SRC: | |
7040 | case OFPACT_SET_L4_DST_PORT: | |
7041 | case OFPACT_SET_L4_SRC_PORT: | |
7042 | case OFPACT_SET_MPLS_LABEL: | |
7043 | case OFPACT_SET_MPLS_TC: | |
7044 | case OFPACT_SET_MPLS_TTL: | |
7045 | case OFPACT_SET_QUEUE: | |
7046 | case OFPACT_SET_TUNNEL: | |
7047 | case OFPACT_SET_VLAN_PCP: | |
7048 | case OFPACT_SET_VLAN_VID: | |
39d4382e KS |
7049 | return ACTION_SLOT_SET_OR_MOVE; |
7050 | ||
c2d936a4 BP |
7051 | case OFPACT_BUNDLE: |
7052 | case OFPACT_CLEAR_ACTIONS: | |
7ae62a67 | 7053 | case OFPACT_CLONE: |
9ac0aada | 7054 | case OFPACT_NAT: |
c2d936a4 | 7055 | case OFPACT_CONTROLLER: |
c2d936a4 BP |
7056 | case OFPACT_ENQUEUE: |
7057 | case OFPACT_EXIT: | |
e672ff9b | 7058 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
7059 | case OFPACT_FIN_TIMEOUT: |
7060 | case OFPACT_GOTO_TABLE: | |
c2d936a4 | 7061 | case OFPACT_LEARN: |
18080541 | 7062 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7063 | case OFPACT_METER: |
7064 | case OFPACT_MULTIPATH: | |
7065 | case OFPACT_NOTE: | |
c2d936a4 | 7066 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7067 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 | 7068 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7069 | case OFPACT_SAMPLE: |
7070 | case OFPACT_STACK_POP: | |
7071 | case OFPACT_STACK_PUSH: | |
c2d936a4 BP |
7072 | case OFPACT_WRITE_ACTIONS: |
7073 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 7074 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7075 | case OFPACT_DEBUG_SLOW: |
39d4382e KS |
7076 | return ACTION_SLOT_INVALID; |
7077 | ||
c2d936a4 BP |
7078 | default: |
7079 | OVS_NOT_REACHED(); | |
7080 | } | |
7081 | } | |
7082 | ||
7083 | /* True if an action is allowed in the action set. | |
7084 | * False otherwise. */ | |
7085 | static bool | |
7086 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
7087 | { | |
39d4382e | 7088 | return action_set_classify(a) != ACTION_SLOT_INVALID; |
4cceacb9 JS |
7089 | } |
7090 | ||
c2d936a4 BP |
7091 | /* Reads 'action_set', which contains ofpacts accumulated by |
7092 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
7093 | * executed directly into 'action_list'. (These names correspond to the | |
7094 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
7095 | * | |
7096 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 7097 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
7098 | * specification. |
7099 | * | |
7100 | * Exceptions: | |
7101 | * + output action is only appended if no group action was present in 'in'. | |
7102 | * + As a simplification all set actions are copied in the order the are | |
7103 | * provided in 'in' as many set actions applied to a field has the same | |
7104 | * affect as only applying the last action that sets a field and | |
7105 | * duplicates are removed by do_xlate_actions(). | |
7106 | * This has an unwanted side-effect of compsoting multiple | |
7107 | * LOAD_REG actions that touch different regions of the same field. */ | |
7108 | void | |
7109 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
7110 | const struct ofpbuf *action_set) | |
f25d0cf3 | 7111 | { |
39d4382e KS |
7112 | const struct ofpact *slots[N_ACTION_SLOTS] = {NULL, }; |
7113 | ||
7114 | struct ofpbuf set_or_move; | |
7115 | ofpbuf_init(&set_or_move, 0); | |
7116 | ||
7117 | const struct ofpact *final_action = NULL; | |
7118 | enum action_set_class final_class = 0; | |
7119 | ||
7120 | const struct ofpact *cursor; | |
7121 | OFPACT_FOR_EACH (cursor, action_set->data, action_set->size) { | |
7122 | int class = action_set_classify(cursor); | |
7123 | if (class < N_ACTION_SLOTS) { | |
7124 | slots[class] = cursor; | |
7125 | } else if (class < ACTION_SLOT_SET_OR_MOVE) { | |
7126 | if (class >= final_class) { | |
7127 | final_action = cursor; | |
7128 | final_class = class; | |
7129 | } | |
7130 | } else if (class == ACTION_SLOT_SET_OR_MOVE) { | |
7131 | ofpact_copy(&set_or_move, cursor); | |
7132 | } else { | |
7133 | ovs_assert(class == ACTION_SLOT_INVALID); | |
7134 | } | |
7135 | } | |
7136 | ||
7137 | if (final_action) { | |
7138 | for (int i = 0; i < N_ACTION_SLOTS; i++) { | |
7139 | if (slots[i]) { | |
7140 | ofpact_copy(action_list, slots[i]); | |
7141 | } | |
7142 | } | |
7143 | ofpbuf_put(action_list, set_or_move.data, set_or_move.size); | |
7144 | ofpact_copy(action_list, final_action); | |
f25d0cf3 | 7145 | } |
39d4382e | 7146 | ofpbuf_uninit(&set_or_move); |
f25d0cf3 BP |
7147 | } |
7148 | ||
f25d0cf3 | 7149 | |
c2d936a4 BP |
7150 | static enum ofperr |
7151 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
7152 | size_t n_in, enum ofp_version version, | |
04f48a68 | 7153 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7154 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 | 7155 | struct ofpbuf *out) |
c2d967a5 | 7156 | { |
c2d936a4 BP |
7157 | enum ofperr error; |
7158 | struct ofpact *a; | |
6fd6ed71 | 7159 | size_t start = out->size; |
c2d967a5 | 7160 | |
5c7c16d8 YHW |
7161 | error = ofpacts_decode(in, n_in, version, vl_mff_map, ofpacts_tlv_bitmap, |
7162 | out); | |
c2d967a5 | 7163 | |
c2d936a4 BP |
7164 | if (error) { |
7165 | return error; | |
7166 | } | |
7167 | ||
6fd6ed71 | 7168 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
7169 | if (!ofpact_is_allowed_in_actions_set(a)) { |
7170 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
7171 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
7172 | } |
7173 | } | |
c2d936a4 BP |
7174 | |
7175 | return 0; | |
c2d967a5 | 7176 | } |
c2d936a4 BP |
7177 | \f |
7178 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 7179 | |
c2d936a4 BP |
7180 | struct instruction_type_info { |
7181 | enum ovs_instruction_type type; | |
7182 | const char *name; | |
7183 | }; | |
7184 | ||
7185 | static const struct instruction_type_info inst_info[] = { | |
7186 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
7187 | OVS_INSTRUCTIONS | |
7188 | #undef DEFINE_INST | |
7189 | }; | |
7190 | ||
7191 | const char * | |
7192 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 7193 | { |
3b048d73 | 7194 | return type < ARRAY_SIZE(inst_info) ? inst_info[type].name : NULL; |
f25d0cf3 BP |
7195 | } |
7196 | ||
c2d936a4 BP |
7197 | int |
7198 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 7199 | { |
c2d936a4 BP |
7200 | const struct instruction_type_info *p; |
7201 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
7202 | if (!strcasecmp(name, p->name)) { | |
7203 | return p->type; | |
7204 | } | |
7205 | } | |
7206 | return -1; | |
29089a54 RL |
7207 | } |
7208 | ||
c2d936a4 BP |
7209 | enum ovs_instruction_type |
7210 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 7211 | { |
c2d936a4 BP |
7212 | switch (type) { |
7213 | case OFPACT_METER: | |
7214 | return OVSINST_OFPIT13_METER; | |
7215 | case OFPACT_CLEAR_ACTIONS: | |
7216 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
7217 | case OFPACT_WRITE_ACTIONS: | |
7218 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
7219 | case OFPACT_WRITE_METADATA: | |
7220 | return OVSINST_OFPIT11_WRITE_METADATA; | |
7221 | case OFPACT_GOTO_TABLE: | |
7222 | return OVSINST_OFPIT11_GOTO_TABLE; | |
7223 | case OFPACT_OUTPUT: | |
7224 | case OFPACT_GROUP: | |
7ae62a67 | 7225 | case OFPACT_CLONE: |
f25d0cf3 | 7226 | case OFPACT_CONTROLLER: |
c2d936a4 | 7227 | case OFPACT_ENQUEUE: |
f25d0cf3 | 7228 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7229 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 7230 | case OFPACT_BUNDLE: |
c2d936a4 BP |
7231 | case OFPACT_SET_VLAN_VID: |
7232 | case OFPACT_SET_VLAN_PCP: | |
7233 | case OFPACT_STRIP_VLAN: | |
7234 | case OFPACT_PUSH_VLAN: | |
7235 | case OFPACT_SET_ETH_SRC: | |
7236 | case OFPACT_SET_ETH_DST: | |
7237 | case OFPACT_SET_IPV4_SRC: | |
7238 | case OFPACT_SET_IPV4_DST: | |
7239 | case OFPACT_SET_IP_DSCP: | |
7240 | case OFPACT_SET_IP_ECN: | |
7241 | case OFPACT_SET_IP_TTL: | |
7242 | case OFPACT_SET_L4_SRC_PORT: | |
7243 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 7244 | case OFPACT_REG_MOVE: |
c2d936a4 | 7245 | case OFPACT_SET_FIELD: |
bd85dac1 | 7246 | case OFPACT_STACK_PUSH: |
bd85dac1 | 7247 | case OFPACT_STACK_POP: |
f25d0cf3 | 7248 | case OFPACT_DEC_TTL: |
097d4939 | 7249 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 7250 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 7251 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7252 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
7253 | case OFPACT_PUSH_MPLS: |
7254 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 7255 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
7256 | case OFPACT_SET_QUEUE: |
7257 | case OFPACT_POP_QUEUE: | |
7258 | case OFPACT_FIN_TIMEOUT: | |
7259 | case OFPACT_RESUBMIT: | |
7260 | case OFPACT_LEARN: | |
18080541 | 7261 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7262 | case OFPACT_MULTIPATH: |
7263 | case OFPACT_NOTE: | |
7264 | case OFPACT_EXIT: | |
e672ff9b | 7265 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 7266 | case OFPACT_SAMPLE: |
d4abaff5 | 7267 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7268 | case OFPACT_DEBUG_SLOW: |
07659514 | 7269 | case OFPACT_CT: |
72fe7578 | 7270 | case OFPACT_CT_CLEAR: |
9ac0aada | 7271 | case OFPACT_NAT: |
f839892a JS |
7272 | case OFPACT_ENCAP: |
7273 | case OFPACT_DECAP: | |
491e05c2 | 7274 | case OFPACT_DEC_NSH_TTL: |
c2d936a4 BP |
7275 | default: |
7276 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
7277 | } | |
7278 | } | |
7279 | ||
7280 | enum ofperr | |
7281 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
7282 | const uint16_t inst_type) | |
7283 | { | |
7284 | switch (inst_type) { | |
7285 | ||
7286 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
7287 | case ENUM: \ | |
7288 | *instruction_type = OVSINST_##ENUM; \ | |
7289 | return 0; | |
7290 | OVS_INSTRUCTIONS | |
7291 | #undef DEFINE_INST | |
7292 | ||
7293 | default: | |
7294 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
7295 | } | |
7296 | } | |
7297 | ||
7298 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
7299 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
7300 | struct ovsinst_map { | |
7301 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
7302 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
7303 | }; | |
7304 | ||
7305 | static const struct ovsinst_map * | |
7306 | get_ovsinst_map(enum ofp_version version) | |
7307 | { | |
7308 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
7309 | static const struct ovsinst_map of11[] = { | |
7310 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7311 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7312 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7313 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7314 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7315 | { 0, -1 }, | |
7316 | }; | |
f25d0cf3 | 7317 | |
c2d936a4 BP |
7318 | /* OpenFlow 1.3+ instructions. */ |
7319 | static const struct ovsinst_map of13[] = { | |
7320 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7321 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7322 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7323 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7324 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7325 | { OVSINST_OFPIT13_METER, 6 }, | |
7326 | { 0, -1 }, | |
7327 | }; | |
4cceacb9 | 7328 | |
c2d936a4 BP |
7329 | return version < OFP13_VERSION ? of11 : of13; |
7330 | } | |
f25d0cf3 | 7331 | |
c2d936a4 BP |
7332 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
7333 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
7334 | * (OFP11_VERSION or later), and returns the result. */ | |
7335 | ovs_be32 | |
7336 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
7337 | { | |
7338 | uint32_t ofpit_bitmap = 0; | |
7339 | const struct ovsinst_map *x; | |
f25d0cf3 | 7340 | |
c2d936a4 BP |
7341 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7342 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
7343 | ofpit_bitmap |= 1u << x->ofpit; | |
7344 | } | |
7345 | } | |
7346 | return htonl(ofpit_bitmap); | |
7347 | } | |
f25d0cf3 | 7348 | |
c2d936a4 BP |
7349 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
7350 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
7351 | * correspond to OVSINST_* values, and returns the result. */ | |
7352 | uint32_t | |
7353 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
7354 | { | |
7355 | uint32_t ovsinst_bitmap = 0; | |
7356 | const struct ovsinst_map *x; | |
f25d0cf3 | 7357 | |
c2d936a4 BP |
7358 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7359 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
7360 | ovsinst_bitmap |= 1u << x->ovsinst; | |
7361 | } | |
7362 | } | |
7363 | return ovsinst_bitmap; | |
7364 | } | |
f25d0cf3 | 7365 | |
c2d936a4 BP |
7366 | static inline struct ofp11_instruction * |
7367 | instruction_next(const struct ofp11_instruction *inst) | |
7368 | { | |
7369 | return ((struct ofp11_instruction *) (void *) | |
7370 | ((uint8_t *) inst + ntohs(inst->len))); | |
7371 | } | |
f25d0cf3 | 7372 | |
c2d936a4 BP |
7373 | static inline bool |
7374 | instruction_is_valid(const struct ofp11_instruction *inst, | |
7375 | size_t n_instructions) | |
7376 | { | |
7377 | uint16_t len = ntohs(inst->len); | |
7378 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
7379 | && len >= sizeof *inst | |
7380 | && len / sizeof *inst <= n_instructions); | |
7381 | } | |
f25d0cf3 | 7382 | |
c2d936a4 BP |
7383 | /* This macro is careful to check for instructions with bad lengths. */ |
7384 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
7385 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
7386 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
7387 | ((LEFT) -= (ntohs((ITER)->len) \ | |
7388 | / sizeof(struct ofp11_instruction)), \ | |
7389 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 7390 | |
c2d936a4 BP |
7391 | static enum ofperr |
7392 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
7393 | enum ovs_instruction_type *type) | |
7394 | { | |
7395 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 7396 | |
c2d936a4 BP |
7397 | switch (inst->type) { |
7398 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
7399 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 7400 | |
c2d936a4 BP |
7401 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
7402 | case CONSTANT_HTONS(ENUM): \ | |
7403 | if (EXTENSIBLE \ | |
7404 | ? len >= sizeof(struct STRUCT) \ | |
7405 | : len == sizeof(struct STRUCT)) { \ | |
7406 | *type = OVSINST_##ENUM; \ | |
7407 | return 0; \ | |
7408 | } else { \ | |
7409 | return OFPERR_OFPBIC_BAD_LEN; \ | |
7410 | } | |
7411 | OVS_INSTRUCTIONS | |
7412 | #undef DEFINE_INST | |
29089a54 | 7413 | |
c2d936a4 BP |
7414 | default: |
7415 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
7416 | } |
7417 | } | |
f25d0cf3 | 7418 | |
c2d936a4 BP |
7419 | static enum ofperr |
7420 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
7421 | size_t n_insts, | |
7422 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 7423 | { |
c2d936a4 BP |
7424 | const struct ofp11_instruction *inst; |
7425 | size_t left; | |
f25d0cf3 | 7426 | |
c2d936a4 BP |
7427 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
7428 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
7429 | enum ovs_instruction_type type; | |
7430 | enum ofperr error; | |
f25d0cf3 | 7431 | |
c2d936a4 BP |
7432 | error = decode_openflow11_instruction(inst, &type); |
7433 | if (error) { | |
7434 | return error; | |
7435 | } | |
f25d0cf3 | 7436 | |
c2d936a4 BP |
7437 | if (out[type]) { |
7438 | return OFPERR_OFPBIC_DUP_INST; | |
7439 | } | |
7440 | out[type] = inst; | |
7441 | } | |
7442 | ||
7443 | if (left) { | |
7444 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
7445 | (n_insts - left) * sizeof *inst); | |
7446 | return OFPERR_OFPBIC_BAD_LEN; | |
7447 | } | |
7448 | return 0; | |
f25d0cf3 BP |
7449 | } |
7450 | ||
7451 | static void | |
c2d936a4 BP |
7452 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
7453 | const struct ofp_action_header **actions, | |
7454 | size_t *actions_len) | |
f25d0cf3 | 7455 | { |
c2d936a4 BP |
7456 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
7457 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
7458 | } | |
f25d0cf3 | 7459 | |
c2d936a4 BP |
7460 | enum ofperr |
7461 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
7462 | unsigned int instructions_len, | |
7463 | enum ofp_version version, | |
04f48a68 | 7464 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7465 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
7466 | struct ofpbuf *ofpacts) |
7467 | { | |
7468 | const struct ofp11_instruction *instructions; | |
7469 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
7470 | enum ofperr error; | |
f25d0cf3 | 7471 | |
9abca1e5 | 7472 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
7473 | if (version == OFP10_VERSION) { |
7474 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
7475 | version, | |
7476 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
5c7c16d8 YHW |
7477 | ofpacts, 0, vl_mff_map, |
7478 | ofpacts_tlv_bitmap); | |
c2d936a4 | 7479 | } |
f25d0cf3 | 7480 | |
c2d936a4 BP |
7481 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
7482 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
7483 | "multiple of %d", | |
7484 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
7485 | error = OFPERR_OFPBIC_BAD_LEN; | |
7486 | goto exit; | |
7487 | } | |
f25d0cf3 | 7488 | |
c2d936a4 BP |
7489 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
7490 | if (instructions == NULL) { | |
7491 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
7492 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 7493 | instructions_len, openflow->size); |
c2d936a4 BP |
7494 | error = OFPERR_OFPBIC_BAD_LEN; |
7495 | goto exit; | |
7496 | } | |
f25d0cf3 | 7497 | |
c2d936a4 BP |
7498 | error = decode_openflow11_instructions( |
7499 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
7500 | insts); | |
7501 | if (error) { | |
7502 | goto exit; | |
7503 | } | |
f25d0cf3 | 7504 | |
c2d936a4 BP |
7505 | if (insts[OVSINST_OFPIT13_METER]) { |
7506 | const struct ofp13_instruction_meter *oim; | |
7507 | struct ofpact_meter *om; | |
f25d0cf3 | 7508 | |
c2d936a4 BP |
7509 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
7510 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 7511 | |
c2d936a4 BP |
7512 | om = ofpact_put_METER(ofpacts); |
7513 | om->meter_id = ntohl(oim->meter_id); | |
076caa2f | 7514 | om->provider_meter_id = UINT32_MAX; /* No provider meter ID. */ |
c2d936a4 BP |
7515 | } |
7516 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
7517 | const struct ofp_action_header *actions; | |
7518 | size_t actions_len; | |
f25d0cf3 | 7519 | |
c2d936a4 BP |
7520 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
7521 | &actions, &actions_len); | |
04f48a68 | 7522 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
5c7c16d8 | 7523 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
7524 | if (error) { |
7525 | goto exit; | |
7526 | } | |
7527 | } | |
7528 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
7529 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
7530 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
7531 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
7532 | } | |
7533 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
7534 | struct ofpact_nest *on; | |
7535 | const struct ofp_action_header *actions; | |
7536 | size_t actions_len; | |
2bd318de | 7537 | size_t start = ofpacts->size; |
255a54ea BP |
7538 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
7539 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
7540 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
7541 | &actions, &actions_len); | |
7542 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
5c7c16d8 YHW |
7543 | version, vl_mff_map, |
7544 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 BP |
7545 | if (error) { |
7546 | goto exit; | |
7547 | } | |
7548 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 7549 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
7550 | } |
7551 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
7552 | const struct ofp11_instruction_write_metadata *oiwm; | |
7553 | struct ofpact_metadata *om; | |
ca287d20 | 7554 | |
c2d936a4 BP |
7555 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
7556 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 7557 | |
c2d936a4 BP |
7558 | om = ofpact_put_WRITE_METADATA(ofpacts); |
7559 | om->metadata = oiwm->metadata; | |
7560 | om->mask = oiwm->metadata_mask; | |
7561 | } | |
7562 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
7563 | const struct ofp11_instruction_goto_table *oigt; | |
7564 | struct ofpact_goto_table *ogt; | |
7395c052 | 7565 | |
c2d936a4 BP |
7566 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
7567 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
7568 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
7569 | ogt->table_id = oigt->table_id; | |
7570 | } | |
e3f8f887 | 7571 | |
6fd6ed71 | 7572 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 7573 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
7574 | exit: |
7575 | if (error) { | |
7576 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 7577 | } |
c2d936a4 | 7578 | return error; |
f25d0cf3 | 7579 | } |
d01c980f | 7580 | |
c2d936a4 BP |
7581 | /* Update the length of the instruction that begins at offset 'ofs' within |
7582 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
7583 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 7584 | static void |
c2d936a4 | 7585 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 7586 | { |
c2d936a4 | 7587 | struct ofp11_instruction_actions *oia; |
d01c980f | 7588 | |
c2d936a4 | 7589 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
7590 | if (openflow->size > ofs + sizeof *oia) { |
7591 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 7592 | } else { |
6fd6ed71 | 7593 | openflow->size = ofs; |
c2d936a4 | 7594 | } |
d01c980f | 7595 | } |
c2d936a4 BP |
7596 | \f |
7597 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
7598 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
7599 | * valid, otherwise an OpenFlow error code. */ | |
7600 | enum ofperr | |
7601 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 7602 | { |
c2d936a4 BP |
7603 | switch (port) { |
7604 | case OFPP_IN_PORT: | |
7605 | case OFPP_TABLE: | |
7606 | case OFPP_NORMAL: | |
7607 | case OFPP_FLOOD: | |
7608 | case OFPP_ALL: | |
7609 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
7610 | case OFPP_LOCAL: |
7611 | return 0; | |
7612 | ||
13d2c689 BP |
7613 | case OFPP_NONE: |
7614 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7615 | ||
c2d936a4 BP |
7616 | default: |
7617 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
7618 | return 0; | |
7619 | } | |
7620 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
7621 | } |
7622 | } | |
7623 | ||
c2d936a4 BP |
7624 | /* Removes the protocols that require consistency between match and actions |
7625 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
7626 | * | |
7627 | * (An example of an inconsistency between match and actions is a flow that | |
7628 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
7629 | * label.) */ | |
d01c980f | 7630 | static void |
c2d936a4 BP |
7631 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
7632 | { | |
7633 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
7634 | } | |
7635 | ||
f839892a JS |
7636 | /* May modify flow->packet_type, flow->dl_type, flow->nw_proto and |
7637 | * flow->vlan_tci, caller must restore them. | |
c2d936a4 BP |
7638 | * |
7639 | * Modifies some actions, filling in fields that could not be properly set | |
7640 | * without context. */ | |
7641 | static enum ofperr | |
7642 | ofpact_check__(enum ofputil_protocol *usable_protocols, struct ofpact *a, | |
67210a55 | 7643 | struct match *match, ofp_port_t max_ports, |
c2d936a4 | 7644 | uint8_t table_id, uint8_t n_tables) |
d01c980f | 7645 | { |
67210a55 | 7646 | struct flow *flow = &match->flow; |
c2d936a4 BP |
7647 | const struct ofpact_enqueue *enqueue; |
7648 | const struct mf_field *mf; | |
f839892a | 7649 | ovs_be16 dl_type = get_dl_type(flow); |
c2d936a4 | 7650 | |
d01c980f BP |
7651 | switch (a->type) { |
7652 | case OFPACT_OUTPUT: | |
c2d936a4 BP |
7653 | return ofpact_check_output_port(ofpact_get_OUTPUT(a)->port, |
7654 | max_ports); | |
7655 | ||
7656 | case OFPACT_CONTROLLER: | |
7657 | return 0; | |
d01c980f BP |
7658 | |
7659 | case OFPACT_ENQUEUE: | |
c2d936a4 BP |
7660 | enqueue = ofpact_get_ENQUEUE(a); |
7661 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports) | |
7662 | && enqueue->port != OFPP_IN_PORT | |
7663 | && enqueue->port != OFPP_LOCAL) { | |
7664 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
7665 | } | |
7666 | return 0; | |
7667 | ||
7668 | case OFPACT_OUTPUT_REG: | |
67210a55 | 7669 | return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, match); |
c2d936a4 | 7670 | |
aaca4fe0 WT |
7671 | case OFPACT_OUTPUT_TRUNC: |
7672 | return ofpact_check_output_port(ofpact_get_OUTPUT_TRUNC(a)->port, | |
7673 | max_ports); | |
7674 | ||
c2d936a4 | 7675 | case OFPACT_BUNDLE: |
67210a55 | 7676 | return bundle_check(ofpact_get_BUNDLE(a), max_ports, match); |
d01c980f BP |
7677 | |
7678 | case OFPACT_SET_VLAN_VID: | |
c2d936a4 BP |
7679 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7680 | * OpenFlow 1.1+ if need be. */ | |
7681 | ofpact_get_SET_VLAN_VID(a)->flow_has_vlan = | |
f0fb825a EG |
7682 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
7683 | if (!(flow->vlans[0].tci & htons(VLAN_CFI)) && | |
c2d936a4 BP |
7684 | !ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { |
7685 | inconsistent_match(usable_protocols); | |
7686 | } | |
7687 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a | 7688 | flow->vlans[0].tci |= htons(VLAN_CFI); |
c2d936a4 | 7689 | return 0; |
d01c980f BP |
7690 | |
7691 | case OFPACT_SET_VLAN_PCP: | |
c2d936a4 BP |
7692 | /* Remember if we saw a vlan tag in the flow to aid translating to |
7693 | * OpenFlow 1.1+ if need be. */ | |
7694 | ofpact_get_SET_VLAN_PCP(a)->flow_has_vlan = | |
f0fb825a EG |
7695 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
7696 | if (!(flow->vlans[0].tci & htons(VLAN_CFI)) && | |
c2d936a4 BP |
7697 | !ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { |
7698 | inconsistent_match(usable_protocols); | |
7699 | } | |
7700 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a | 7701 | flow->vlans[0].tci |= htons(VLAN_CFI); |
c2d936a4 | 7702 | return 0; |
d01c980f BP |
7703 | |
7704 | case OFPACT_STRIP_VLAN: | |
f0fb825a | 7705 | if (!(flow->vlans[0].tci & htons(VLAN_CFI))) { |
c2d936a4 BP |
7706 | inconsistent_match(usable_protocols); |
7707 | } | |
f0fb825a | 7708 | flow_pop_vlan(flow, NULL); |
c2d936a4 | 7709 | return 0; |
d01c980f | 7710 | |
3e34fbdd | 7711 | case OFPACT_PUSH_VLAN: |
f0fb825a EG |
7712 | if (flow->vlans[FLOW_MAX_VLAN_HEADERS - 1].tci & htons(VLAN_CFI)) { |
7713 | /* Support maximum (FLOW_MAX_VLAN_HEADERS) VLAN headers. */ | |
c2d936a4 BP |
7714 | return OFPERR_OFPBAC_BAD_TAG; |
7715 | } | |
7716 | /* Temporary mark that we have a vlan tag. */ | |
f0fb825a EG |
7717 | flow_push_vlan_uninit(flow, NULL); |
7718 | flow->vlans[0].tci |= htons(VLAN_CFI); | |
c2d936a4 | 7719 | return 0; |
276c4e7a | 7720 | |
d01c980f | 7721 | case OFPACT_SET_ETH_SRC: |
d01c980f | 7722 | case OFPACT_SET_ETH_DST: |
c2d936a4 | 7723 | return 0; |
d01c980f BP |
7724 | |
7725 | case OFPACT_SET_IPV4_SRC: | |
d01c980f | 7726 | case OFPACT_SET_IPV4_DST: |
f839892a | 7727 | if (dl_type != htons(ETH_TYPE_IP)) { |
c2d936a4 BP |
7728 | inconsistent_match(usable_protocols); |
7729 | } | |
7730 | return 0; | |
d01c980f | 7731 | |
04f01c24 | 7732 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 7733 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 7734 | case OFPACT_SET_IP_TTL: |
7bcb1506 | 7735 | case OFPACT_DEC_TTL: |
c2d936a4 BP |
7736 | if (!is_ip_any(flow)) { |
7737 | inconsistent_match(usable_protocols); | |
7738 | } | |
7739 | return 0; | |
b02475c5 | 7740 | |
c2d936a4 | 7741 | case OFPACT_SET_L4_SRC_PORT: |
c2d936a4 | 7742 | case OFPACT_SET_L4_DST_PORT: |
b8778a0d | 7743 | if (!is_ip_any(flow) || (flow->nw_frag & FLOW_NW_FRAG_LATER) || |
c2d936a4 BP |
7744 | (flow->nw_proto != IPPROTO_TCP && flow->nw_proto != IPPROTO_UDP |
7745 | && flow->nw_proto != IPPROTO_SCTP)) { | |
7746 | inconsistent_match(usable_protocols); | |
7747 | } | |
7748 | /* Note on which transport protocol the port numbers are set. | |
7749 | * This allows this set action to be converted to an OF1.2 set field | |
7750 | * action. */ | |
b8778a0d JR |
7751 | if (a->type == OFPACT_SET_L4_SRC_PORT) { |
7752 | ofpact_get_SET_L4_SRC_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7753 | } else { | |
7754 | ofpact_get_SET_L4_DST_PORT(a)->flow_ip_proto = flow->nw_proto; | |
7755 | } | |
c2d936a4 | 7756 | return 0; |
b02475c5 | 7757 | |
c2d936a4 | 7758 | case OFPACT_REG_MOVE: |
67210a55 | 7759 | return nxm_reg_move_check(ofpact_get_REG_MOVE(a), match); |
8dd54666 | 7760 | |
e3f8f887 | 7761 | case OFPACT_SET_FIELD: |
c2d936a4 BP |
7762 | mf = ofpact_get_SET_FIELD(a)->field; |
7763 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
aff49b8c | 7764 | if (!mf_are_prereqs_ok(mf, flow, NULL) || |
f0fb825a EG |
7765 | (mf->id == MFF_VLAN_VID && |
7766 | !(flow->vlans[0].tci & htons(VLAN_CFI)))) { | |
5bcd4754 | 7767 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisites", |
c2d936a4 BP |
7768 | mf->name); |
7769 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7770 | } | |
7771 | /* Remember if we saw a vlan tag in the flow to aid translating to | |
7772 | * OpenFlow 1.1 if need be. */ | |
7773 | ofpact_get_SET_FIELD(a)->flow_has_vlan = | |
f0fb825a | 7774 | (flow->vlans[0].tci & htons(VLAN_CFI)) == htons(VLAN_CFI); |
c2d936a4 BP |
7775 | if (mf->id == MFF_VLAN_TCI) { |
7776 | /* The set field may add or remove the vlan tag, | |
7777 | * Mark the status temporarily. */ | |
f0fb825a | 7778 | flow->vlans[0].tci = ofpact_get_SET_FIELD(a)->value->be16; |
c2d936a4 BP |
7779 | } |
7780 | return 0; | |
e3f8f887 | 7781 | |
bd85dac1 | 7782 | case OFPACT_STACK_PUSH: |
67210a55 | 7783 | return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), match); |
c2d936a4 | 7784 | |
bd85dac1 | 7785 | case OFPACT_STACK_POP: |
67210a55 | 7786 | return nxm_stack_pop_check(ofpact_get_STACK_POP(a), match); |
c2d936a4 BP |
7787 | |
7788 | case OFPACT_SET_MPLS_LABEL: | |
7789 | case OFPACT_SET_MPLS_TC: | |
7790 | case OFPACT_SET_MPLS_TTL: | |
7791 | case OFPACT_DEC_MPLS_TTL: | |
f839892a | 7792 | if (!eth_type_mpls(dl_type)) { |
c2d936a4 BP |
7793 | inconsistent_match(usable_protocols); |
7794 | } | |
7795 | return 0; | |
7796 | ||
d01c980f | 7797 | case OFPACT_SET_TUNNEL: |
c2d936a4 | 7798 | case OFPACT_SET_QUEUE: |
d01c980f | 7799 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7800 | return 0; |
7801 | ||
2cd20955 JR |
7802 | case OFPACT_RESUBMIT: { |
7803 | struct ofpact_resubmit *resubmit = ofpact_get_RESUBMIT(a); | |
7804 | ||
7805 | if (resubmit->with_ct_orig && !is_ct_valid(flow, &match->wc, NULL)) { | |
7806 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7807 | } | |
7808 | return 0; | |
7809 | } | |
c2d936a4 BP |
7810 | case OFPACT_FIN_TIMEOUT: |
7811 | if (flow->nw_proto != IPPROTO_TCP) { | |
7812 | inconsistent_match(usable_protocols); | |
7813 | } | |
7814 | return 0; | |
7815 | ||
d01c980f | 7816 | case OFPACT_LEARN: |
67210a55 | 7817 | return learn_check(ofpact_get_LEARN(a), match); |
c2d936a4 | 7818 | |
18080541 BP |
7819 | case OFPACT_CONJUNCTION: |
7820 | return 0; | |
7821 | ||
d01c980f | 7822 | case OFPACT_MULTIPATH: |
67210a55 | 7823 | return multipath_check(ofpact_get_MULTIPATH(a), match); |
c2d936a4 | 7824 | |
d01c980f BP |
7825 | case OFPACT_NOTE: |
7826 | case OFPACT_EXIT: | |
c2d936a4 | 7827 | return 0; |
d01c980f | 7828 | |
c2d936a4 | 7829 | case OFPACT_PUSH_MPLS: |
f839892a JS |
7830 | if (flow->packet_type != htonl(PT_ETH)) { |
7831 | inconsistent_match(usable_protocols); | |
7832 | } | |
c2d936a4 BP |
7833 | flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype; |
7834 | /* The packet is now MPLS and the MPLS payload is opaque. | |
7835 | * Thus nothing can be assumed about the network protocol. | |
7836 | * Temporarily mark that we have no nw_proto. */ | |
7837 | flow->nw_proto = 0; | |
7838 | return 0; | |
1e7db674 | 7839 | |
c2d936a4 | 7840 | case OFPACT_POP_MPLS: |
f839892a JS |
7841 | if (flow->packet_type != htonl(PT_ETH) |
7842 | || !eth_type_mpls(dl_type)) { | |
c2d936a4 BP |
7843 | inconsistent_match(usable_protocols); |
7844 | } | |
7845 | flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype; | |
7846 | return 0; | |
1e7db674 | 7847 | |
c2d936a4 BP |
7848 | case OFPACT_SAMPLE: |
7849 | return 0; | |
1e7db674 | 7850 | |
7ae62a67 WT |
7851 | case OFPACT_CLONE: { |
7852 | struct ofpact_nest *on = ofpact_get_CLONE(a); | |
7853 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
67210a55 | 7854 | match, max_ports, table_id, n_tables, |
7ae62a67 WT |
7855 | usable_protocols); |
7856 | } | |
7857 | ||
07659514 JS |
7858 | case OFPACT_CT: { |
7859 | struct ofpact_conntrack *oc = ofpact_get_CT(a); | |
7860 | ||
f839892a | 7861 | if (!dl_type_is_ip_any(dl_type) |
8b6d097c | 7862 | || (flow->ct_state & CS_INVALID && oc->flags & NX_CT_F_COMMIT) |
40c7b2fc JS |
7863 | || (oc->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) |
7864 | || (oc->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
ed26e3ea JR |
7865 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions |
7866 | * be silently discarded. Instead, datapath flow install fails, so | |
7867 | * it is better to flag inconsistent CT actions as hard errors. */ | |
7868 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
07659514 JS |
7869 | } |
7870 | ||
7871 | if (oc->zone_src.field) { | |
67210a55 | 7872 | return mf_check_src(&oc->zone_src, match); |
07659514 | 7873 | } |
8e53fe8c | 7874 | |
9f02d70c | 7875 | return ofpacts_check(oc->actions, ofpact_ct_get_action_len(oc), |
67210a55 | 7876 | match, max_ports, table_id, n_tables, |
9f02d70c | 7877 | usable_protocols); |
07659514 JS |
7878 | } |
7879 | ||
72fe7578 BP |
7880 | case OFPACT_CT_CLEAR: |
7881 | return 0; | |
7882 | ||
9ac0aada JR |
7883 | case OFPACT_NAT: { |
7884 | struct ofpact_nat *on = ofpact_get_NAT(a); | |
7885 | ||
f839892a JS |
7886 | if (!dl_type_is_ip_any(dl_type) || |
7887 | (on->range_af == AF_INET && dl_type != htons(ETH_TYPE_IP)) || | |
9ac0aada | 7888 | (on->range_af == AF_INET6 |
f839892a | 7889 | && dl_type != htons(ETH_TYPE_IPV6))) { |
ed26e3ea | 7890 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
9ac0aada JR |
7891 | } |
7892 | return 0; | |
7893 | } | |
7894 | ||
c2d936a4 BP |
7895 | case OFPACT_CLEAR_ACTIONS: |
7896 | return 0; | |
1e7db674 | 7897 | |
c2d936a4 BP |
7898 | case OFPACT_WRITE_ACTIONS: { |
7899 | /* Use a temporary copy of 'usable_protocols' because we can't check | |
7900 | * consistency of an action set. */ | |
7901 | struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a); | |
7902 | enum ofputil_protocol p = *usable_protocols; | |
7903 | return ofpacts_check(on->actions, ofpact_nest_get_action_len(on), | |
67210a55 | 7904 | match, max_ports, table_id, n_tables, &p); |
c2d936a4 | 7905 | } |
1e7db674 | 7906 | |
c2d936a4 BP |
7907 | case OFPACT_WRITE_METADATA: |
7908 | return 0; | |
1e7db674 | 7909 | |
c2d936a4 BP |
7910 | case OFPACT_METER: { |
7911 | uint32_t mid = ofpact_get_METER(a)->meter_id; | |
7912 | if (mid == 0 || mid > OFPM13_MAX) { | |
7913 | return OFPERR_OFPMMFC_INVALID_METER; | |
7914 | } | |
7915 | return 0; | |
7916 | } | |
1e7db674 | 7917 | |
c2d936a4 BP |
7918 | case OFPACT_GOTO_TABLE: { |
7919 | uint8_t goto_table = ofpact_get_GOTO_TABLE(a)->table_id; | |
7920 | if ((table_id != 255 && goto_table <= table_id) | |
7921 | || (n_tables != 255 && goto_table >= n_tables)) { | |
8c87971e | 7922 | return OFPERR_OFPBIC_BAD_TABLE_ID; |
c2d936a4 BP |
7923 | } |
7924 | return 0; | |
7925 | } | |
1e7db674 | 7926 | |
c2d936a4 BP |
7927 | case OFPACT_GROUP: |
7928 | return 0; | |
1e7db674 | 7929 | |
e672ff9b JR |
7930 | case OFPACT_UNROLL_XLATE: |
7931 | /* UNROLL is an internal action that should never be seen via | |
7932 | * OpenFlow. */ | |
7933 | return OFPERR_OFPBAC_BAD_TYPE; | |
7934 | ||
d4abaff5 | 7935 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7936 | case OFPACT_DEBUG_SLOW: |
d4abaff5 BP |
7937 | return 0; |
7938 | ||
f839892a JS |
7939 | case OFPACT_ENCAP: |
7940 | flow->packet_type = ofpact_get_ENCAP(a)->new_pkt_type; | |
7941 | if (pt_ns(flow->packet_type) == OFPHTN_ETHERTYPE) { | |
7942 | flow->dl_type = htons(pt_ns_type(flow->packet_type)); | |
7943 | } | |
7944 | if (!is_ip_any(flow)) { | |
7945 | flow->nw_proto = 0; | |
7946 | } | |
7947 | return 0; | |
7948 | ||
7949 | case OFPACT_DECAP: | |
7950 | if (flow->packet_type == htonl(PT_ETH)) { | |
7951 | /* Adjust the packet_type to allow subsequent actions. */ | |
7952 | flow->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
7953 | ntohs(flow->dl_type)); | |
7954 | } else { | |
7955 | /* The actual packet_type is only known after decapsulation. | |
7956 | * Do not allow subsequent actions that depend on packet headers. */ | |
7957 | flow->packet_type = htonl(PT_UNKNOWN); | |
7958 | flow->dl_type = OVS_BE16_MAX; | |
7959 | } | |
7960 | return 0; | |
7961 | ||
491e05c2 YY |
7962 | case OFPACT_DEC_NSH_TTL: |
7963 | if ((flow->packet_type != htonl(PT_NSH)) && | |
7964 | (flow->dl_type != htons(ETH_TYPE_NSH))) { | |
7965 | inconsistent_match(usable_protocols); | |
7966 | } | |
7967 | return 0; | |
7968 | ||
c2d936a4 BP |
7969 | default: |
7970 | OVS_NOT_REACHED(); | |
7971 | } | |
7972 | } | |
1e7db674 | 7973 | |
c2d936a4 BP |
7974 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
7975 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
7976 | * switch with no more than 'max_ports' ports. | |
7977 | * | |
7978 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
7979 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
7980 | * example of an inconsistency between match and actions is a flow that does | |
7981 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
7982 | * | |
67210a55 | 7983 | * May annotate ofpacts with information gathered from the 'match'. |
c2d936a4 | 7984 | * |
67210a55 JR |
7985 | * May temporarily modify 'match', but restores the changes before |
7986 | * returning. */ | |
c2d936a4 BP |
7987 | enum ofperr |
7988 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
67210a55 | 7989 | struct match *match, ofp_port_t max_ports, |
c2d936a4 BP |
7990 | uint8_t table_id, uint8_t n_tables, |
7991 | enum ofputil_protocol *usable_protocols) | |
7992 | { | |
7993 | struct ofpact *a; | |
f839892a | 7994 | ovs_be32 packet_type = match->flow.packet_type; |
67210a55 | 7995 | ovs_be16 dl_type = match->flow.dl_type; |
67210a55 | 7996 | uint8_t nw_proto = match->flow.nw_proto; |
c2d936a4 | 7997 | enum ofperr error = 0; |
f0fb825a EG |
7998 | union flow_vlan_hdr vlans[FLOW_MAX_VLAN_HEADERS]; |
7999 | ||
8000 | memcpy(&vlans, &match->flow.vlans, sizeof(vlans)); | |
1e7db674 | 8001 | |
c2d936a4 | 8002 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
67210a55 | 8003 | error = ofpact_check__(usable_protocols, a, match, |
c2d936a4 BP |
8004 | max_ports, table_id, n_tables); |
8005 | if (error) { | |
1e7db674 | 8006 | break; |
c2d936a4 BP |
8007 | } |
8008 | } | |
8009 | /* Restore fields that may have been modified. */ | |
f839892a | 8010 | match->flow.packet_type = packet_type; |
67210a55 | 8011 | match->flow.dl_type = dl_type; |
f0fb825a | 8012 | memcpy(&match->flow.vlans, &vlans, sizeof(vlans)); |
67210a55 | 8013 | match->flow.nw_proto = nw_proto; |
c2d936a4 BP |
8014 | return error; |
8015 | } | |
1e7db674 | 8016 | |
c2d936a4 BP |
8017 | /* Like ofpacts_check(), but reports inconsistencies as |
8018 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
8019 | enum ofperr | |
8020 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
67210a55 | 8021 | struct match *match, ofp_port_t max_ports, |
c2d936a4 BP |
8022 | uint8_t table_id, uint8_t n_tables, |
8023 | enum ofputil_protocol usable_protocols) | |
8024 | { | |
8025 | enum ofputil_protocol p = usable_protocols; | |
8026 | enum ofperr error; | |
1e7db674 | 8027 | |
67210a55 | 8028 | error = ofpacts_check(ofpacts, ofpacts_len, match, max_ports, |
c2d936a4 BP |
8029 | table_id, n_tables, &p); |
8030 | return (error ? error | |
8031 | : p != usable_protocols ? OFPERR_OFPBAC_MATCH_INCONSISTENT | |
8032 | : 0); | |
8033 | } | |
097d4939 | 8034 | |
28f5311f JS |
8035 | /* Returns the destination field that 'ofpact' would write to, or NULL |
8036 | * if the action would not write to an mf_field. */ | |
8037 | const struct mf_field * | |
8038 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 8039 | { |
28f5311f JS |
8040 | if (ofpact->type == OFPACT_SET_FIELD) { |
8041 | const struct ofpact_set_field *orl; | |
8e53fe8c | 8042 | |
28f5311f | 8043 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 8044 | return orl->field; |
28f5311f JS |
8045 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
8046 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 8047 | |
28f5311f | 8048 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
8049 | return orm->dst.field; |
8050 | } | |
8051 | ||
8052 | return NULL; | |
8053 | } | |
8054 | ||
8055 | static enum ofperr | |
8056 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
8057 | { | |
8058 | VLOG_WARN("%s action doesn't support nested action %s", | |
8059 | ofpact_name(outer_action), ofpact_name(action)); | |
8060 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8061 | } | |
8062 | ||
8063 | static bool | |
8064 | field_requires_ct(enum mf_field_id field) | |
8065 | { | |
9daf2348 | 8066 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
8067 | } |
8068 | ||
8069 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
8070 | static enum ofperr |
8071 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
8072 | { | |
28f5311f | 8073 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
8074 | |
8075 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
8076 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
8077 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8078 | } | |
9ac0aada JR |
8079 | if (a->type == OFPACT_NAT) { |
8080 | if (outer_action != OFPACT_CT) { | |
8081 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
8082 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8083 | } | |
8084 | return 0; | |
8085 | } | |
8e53fe8c JS |
8086 | |
8087 | if (outer_action) { | |
8088 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
8089 | || outer_action == OFPACT_CT); | |
8090 | ||
8091 | if (outer_action == OFPACT_CT) { | |
8092 | if (!field) { | |
8093 | return unsupported_nesting(a->type, outer_action); | |
8094 | } else if (!field_requires_ct(field->id)) { | |
8095 | VLOG_WARN("%s action doesn't support nested modification " | |
8096 | "of %s", ofpact_name(outer_action), field->name); | |
8097 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8098 | } | |
8099 | } | |
d824b5b7 JS |
8100 | } |
8101 | ||
8102 | return 0; | |
8103 | } | |
8104 | ||
18080541 BP |
8105 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
8106 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
8107 | * vSwitch. | |
8108 | * | |
8109 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
8110 | * instructions that are allowed within 'ofpacts[]'. |
8111 | * | |
8112 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
8113 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
8114 | static enum ofperr |
8115 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 8116 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
8117 | { |
8118 | const struct ofpact *a; | |
8119 | enum ovs_instruction_type inst; | |
097d4939 | 8120 | |
c2d936a4 BP |
8121 | inst = OVSINST_OFPIT13_METER; |
8122 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8123 | enum ovs_instruction_type next; | |
8e53fe8c | 8124 | enum ofperr error; |
1e7db674 | 8125 | |
18080541 BP |
8126 | if (a->type == OFPACT_CONJUNCTION) { |
8127 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
8128 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
8129 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
8130 | "\"note\" but not any other kind of action " | |
8131 | "(such as the \"%s\" action used here)", | |
96775a1c | 8132 | ofpact_name(a->type)); |
18080541 BP |
8133 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
8134 | } | |
8135 | } | |
8136 | return 0; | |
8137 | } | |
8138 | ||
8e53fe8c JS |
8139 | error = ofpacts_verify_nested(a, outer_action); |
8140 | if (error) { | |
8141 | return error; | |
d824b5b7 JS |
8142 | } |
8143 | ||
c2d936a4 BP |
8144 | next = ovs_instruction_type_from_ofpact_type(a->type); |
8145 | if (a > ofpacts | |
8146 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
8147 | ? next < inst | |
8148 | : next <= inst)) { | |
8149 | const char *name = ovs_instruction_name_from_type(inst); | |
8150 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8151 | |
c2d936a4 BP |
8152 | if (next == inst) { |
8153 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
8154 | "1.1+ compatibility", name); | |
8155 | } else { | |
8156 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
8157 | "before %s, for OpenFlow 1.1+ compatibility", | |
8158 | next_name, name); | |
8159 | } | |
8160 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
8161 | } | |
8162 | if (!((1u << next) & allowed_ovsinsts)) { | |
8163 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8164 | |
c2d936a4 BP |
8165 | VLOG_WARN("%s instruction not allowed here", name); |
8166 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 8167 | } |
c2d936a4 BP |
8168 | |
8169 | inst = next; | |
8170 | } | |
8171 | ||
8172 | return 0; | |
8173 | } | |
8174 | \f | |
8175 | /* Converting ofpacts to OpenFlow. */ | |
8176 | ||
8177 | static void | |
8178 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
8179 | struct ofpbuf *out) | |
8180 | { | |
8181 | switch (a->type) { | |
8182 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8183 | case OFPACT_##ENUM: \ | |
355ead69 GS |
8184 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
8185 | return; | |
c2d936a4 BP |
8186 | OFPACTS |
8187 | #undef OFPACT | |
8188 | default: | |
8189 | OVS_NOT_REACHED(); | |
1e7db674 | 8190 | } |
e3f8f887 JR |
8191 | } |
8192 | ||
8193 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
8194 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 8195 | * 'openflow'. */ |
a07c15bc | 8196 | size_t |
e3f8f887 JR |
8197 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
8198 | struct ofpbuf *openflow, | |
8199 | enum ofp_version ofp_version) | |
d01c980f BP |
8200 | { |
8201 | const struct ofpact *a; | |
6fd6ed71 | 8202 | size_t start_size = openflow->size; |
d01c980f BP |
8203 | |
8204 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 8205 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 8206 | } |
6fd6ed71 | 8207 | return openflow->size - start_size; |
d01c980f BP |
8208 | } |
8209 | ||
c2d936a4 BP |
8210 | static enum ovs_instruction_type |
8211 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 8212 | { |
c2d936a4 BP |
8213 | return (ovs_instruction_type_from_ofpact_type(a->type) |
8214 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 8215 | } |
8dd54666 IY |
8216 | |
8217 | void | |
e3f8f887 JR |
8218 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
8219 | size_t ofpacts_len, | |
8220 | struct ofpbuf *openflow, | |
8221 | enum ofp_version ofp_version) | |
8dd54666 | 8222 | { |
c2d936a4 | 8223 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
8224 | const struct ofpact *a; |
8225 | ||
8f2cded4 BP |
8226 | if (ofp_version == OFP10_VERSION) { |
8227 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
8228 | ofp_version); | |
8229 | return; | |
8230 | } | |
e3f8f887 | 8231 | |
c2d936a4 BP |
8232 | a = ofpacts; |
8233 | while (a < end) { | |
8234 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 8235 | size_t ofs = openflow->size; |
8dd54666 IY |
8236 | |
8237 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
8238 | do { |
8239 | encode_ofpact(a, ofp_version, openflow); | |
8240 | a = ofpact_next(a); | |
8241 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 8242 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
8243 | } else { |
8244 | encode_ofpact(a, ofp_version, openflow); | |
8245 | a = ofpact_next(a); | |
8dd54666 IY |
8246 | } |
8247 | } | |
8248 | } | |
d01c980f | 8249 | \f |
08d1e234 BP |
8250 | /* Sets of supported actions. */ |
8251 | ||
8252 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
8253 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
8254 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
8255 | * instance is specific to one OpenFlow version.) */ | |
8256 | struct ofpact_map { | |
8257 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
8258 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
8259 | }; | |
8260 | ||
8261 | static const struct ofpact_map * | |
8262 | get_ofpact_map(enum ofp_version version) | |
8263 | { | |
8264 | /* OpenFlow 1.0 actions. */ | |
8265 | static const struct ofpact_map of10[] = { | |
8266 | { OFPACT_OUTPUT, 0 }, | |
8267 | { OFPACT_SET_VLAN_VID, 1 }, | |
8268 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8269 | { OFPACT_STRIP_VLAN, 3 }, | |
8270 | { OFPACT_SET_ETH_SRC, 4 }, | |
8271 | { OFPACT_SET_ETH_DST, 5 }, | |
8272 | { OFPACT_SET_IPV4_SRC, 6 }, | |
8273 | { OFPACT_SET_IPV4_DST, 7 }, | |
8274 | { OFPACT_SET_IP_DSCP, 8 }, | |
8275 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8276 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8277 | { OFPACT_ENQUEUE, 11 }, | |
8278 | { 0, -1 }, | |
8279 | }; | |
8280 | ||
8281 | /* OpenFlow 1.1 actions. */ | |
8282 | static const struct ofpact_map of11[] = { | |
8283 | { OFPACT_OUTPUT, 0 }, | |
8284 | { OFPACT_SET_VLAN_VID, 1 }, | |
8285 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8286 | { OFPACT_SET_ETH_SRC, 3 }, | |
8287 | { OFPACT_SET_ETH_DST, 4 }, | |
8288 | { OFPACT_SET_IPV4_SRC, 5 }, | |
8289 | { OFPACT_SET_IPV4_DST, 6 }, | |
8290 | { OFPACT_SET_IP_DSCP, 7 }, | |
8291 | { OFPACT_SET_IP_ECN, 8 }, | |
8292 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8293 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8294 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8295 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8296 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
8297 | { OFPACT_SET_MPLS_TC, 14 }, | |
8298 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8299 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8300 | { OFPACT_PUSH_VLAN, 17 }, | |
8301 | { OFPACT_STRIP_VLAN, 18 }, | |
8302 | { OFPACT_PUSH_MPLS, 19 }, | |
8303 | { OFPACT_POP_MPLS, 20 }, | |
8304 | { OFPACT_SET_QUEUE, 21 }, | |
8305 | { OFPACT_GROUP, 22 }, | |
8306 | { OFPACT_SET_IP_TTL, 23 }, | |
8307 | { OFPACT_DEC_TTL, 24 }, | |
8308 | { 0, -1 }, | |
8309 | }; | |
8310 | ||
8311 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
8312 | static const struct ofpact_map of12[] = { | |
8313 | { OFPACT_OUTPUT, 0 }, | |
8314 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8315 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8316 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8317 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8318 | { OFPACT_PUSH_VLAN, 17 }, | |
8319 | { OFPACT_STRIP_VLAN, 18 }, | |
8320 | { OFPACT_PUSH_MPLS, 19 }, | |
8321 | { OFPACT_POP_MPLS, 20 }, | |
8322 | { OFPACT_SET_QUEUE, 21 }, | |
8323 | { OFPACT_GROUP, 22 }, | |
8324 | { OFPACT_SET_IP_TTL, 23 }, | |
8325 | { OFPACT_DEC_TTL, 24 }, | |
8326 | { OFPACT_SET_FIELD, 25 }, | |
8327 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
8328 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
8329 | { 0, -1 }, | |
8330 | }; | |
8331 | ||
8332 | switch (version) { | |
8333 | case OFP10_VERSION: | |
8334 | return of10; | |
8335 | ||
8336 | case OFP11_VERSION: | |
8337 | return of11; | |
8338 | ||
8339 | case OFP12_VERSION: | |
8340 | case OFP13_VERSION: | |
8341 | case OFP14_VERSION: | |
8342 | case OFP15_VERSION: | |
b79d45a1 | 8343 | case OFP16_VERSION: |
08d1e234 BP |
8344 | default: |
8345 | return of12; | |
8346 | } | |
8347 | } | |
8348 | ||
8349 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
8350 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
8351 | * returns the result. */ | |
8352 | ovs_be32 | |
8353 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
8354 | { | |
8355 | uint32_t openflow_bitmap = 0; | |
8356 | const struct ofpact_map *x; | |
8357 | ||
8358 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8359 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
8360 | openflow_bitmap |= 1u << x->ofpat; | |
8361 | } | |
8362 | } | |
8363 | return htonl(openflow_bitmap); | |
8364 | } | |
8365 | ||
8366 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
8367 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
8368 | * and returns the result. */ | |
8369 | uint64_t | |
8370 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
8371 | { | |
8372 | uint64_t ofpact_bitmap = 0; | |
8373 | const struct ofpact_map *x; | |
8374 | ||
8375 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8376 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
8377 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
8378 | } | |
8379 | } | |
8380 | return ofpact_bitmap; | |
8381 | } | |
8382 | ||
8383 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
8384 | * by 'ofpacts_bitmap'. */ | |
8385 | void | |
8386 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
8387 | { | |
8388 | if (!ofpacts_bitmap) { | |
8389 | ds_put_cstr(s, "<none>"); | |
8390 | } else { | |
8391 | while (ofpacts_bitmap) { | |
8392 | ds_put_format(s, "%s ", | |
8393 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
8394 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
8395 | } | |
8396 | ds_chomp(s, ' '); | |
8397 | } | |
8398 | } | |
8399 | \f | |
f25d0cf3 BP |
8400 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
8401 | static bool | |
4e022ec0 | 8402 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
8403 | { |
8404 | switch (ofpact->type) { | |
8405 | case OFPACT_OUTPUT: | |
8406 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
8407 | case OFPACT_ENQUEUE: | |
8408 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
8409 | case OFPACT_CONTROLLER: | |
8410 | return port == OFPP_CONTROLLER; | |
8411 | ||
8412 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 8413 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
8414 | case OFPACT_BUNDLE: |
8415 | case OFPACT_SET_VLAN_VID: | |
8416 | case OFPACT_SET_VLAN_PCP: | |
8417 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 8418 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
8419 | case OFPACT_SET_ETH_SRC: |
8420 | case OFPACT_SET_ETH_DST: | |
8421 | case OFPACT_SET_IPV4_SRC: | |
8422 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 8423 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 8424 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 8425 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
8426 | case OFPACT_SET_L4_SRC_PORT: |
8427 | case OFPACT_SET_L4_DST_PORT: | |
8428 | case OFPACT_REG_MOVE: | |
b2dd70be | 8429 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
8430 | case OFPACT_STACK_PUSH: |
8431 | case OFPACT_STACK_POP: | |
f25d0cf3 | 8432 | case OFPACT_DEC_TTL: |
097d4939 JR |
8433 | case OFPACT_SET_MPLS_LABEL: |
8434 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 8435 | case OFPACT_SET_MPLS_TTL: |
b676167a | 8436 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 8437 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 8438 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
8439 | case OFPACT_SET_QUEUE: |
8440 | case OFPACT_POP_QUEUE: | |
8441 | case OFPACT_FIN_TIMEOUT: | |
8442 | case OFPACT_RESUBMIT: | |
8443 | case OFPACT_LEARN: | |
18080541 | 8444 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 8445 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
8446 | case OFPACT_NOTE: |
8447 | case OFPACT_EXIT: | |
e672ff9b | 8448 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
8449 | case OFPACT_PUSH_MPLS: |
8450 | case OFPACT_POP_MPLS: | |
29089a54 | 8451 | case OFPACT_SAMPLE: |
b19e8793 | 8452 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 8453 | case OFPACT_CLONE: |
7fdb60a7 | 8454 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 8455 | case OFPACT_GOTO_TABLE: |
638a19b0 | 8456 | case OFPACT_METER: |
7395c052 | 8457 | case OFPACT_GROUP: |
d4abaff5 | 8458 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 8459 | case OFPACT_DEBUG_SLOW: |
07659514 | 8460 | case OFPACT_CT: |
72fe7578 | 8461 | case OFPACT_CT_CLEAR: |
9ac0aada | 8462 | case OFPACT_NAT: |
f839892a JS |
8463 | case OFPACT_ENCAP: |
8464 | case OFPACT_DECAP: | |
491e05c2 | 8465 | case OFPACT_DEC_NSH_TTL: |
f25d0cf3 BP |
8466 | default: |
8467 | return false; | |
8468 | } | |
8469 | } | |
8470 | ||
8471 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
8472 | * to 'port', false otherwise. */ | |
8473 | bool | |
8474 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 8475 | ofp_port_t port) |
c2d936a4 BP |
8476 | { |
8477 | const struct ofpact *a; | |
f25d0cf3 | 8478 | |
4f20179d | 8479 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8480 | if (ofpact_outputs_to_port(a, port)) { |
8481 | return true; | |
8482 | } | |
8483 | } | |
f25d0cf3 | 8484 | |
c2d936a4 BP |
8485 | return false; |
8486 | } | |
f25d0cf3 | 8487 | |
c2d936a4 BP |
8488 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
8489 | * to 'group', false otherwise. */ | |
8490 | bool | |
8491 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
8492 | uint32_t group_id) | |
8493 | { | |
8494 | const struct ofpact *a; | |
b02475c5 | 8495 | |
4f20179d | 8496 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8497 | if (a->type == OFPACT_GROUP |
8498 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
8499 | return true; | |
8500 | } | |
8501 | } | |
b02475c5 | 8502 | |
c2d936a4 BP |
8503 | return false; |
8504 | } | |
8dd54666 | 8505 | |
6cc9d77c BP |
8506 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8507 | * actions in 'b' are bytewise identical. */ | |
c2d936a4 BP |
8508 | bool |
8509 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
8510 | const struct ofpact *b, size_t b_len) | |
8511 | { | |
8512 | return a_len == b_len && !memcmp(a, b, a_len); | |
8513 | } | |
29089a54 | 8514 | |
6cc9d77c BP |
8515 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8516 | * actions in 'b' are identical when formatted as strings. (Converting actions | |
8517 | * to string form suppresses some rarely meaningful differences, such as the | |
8518 | * 'compat' member of actions.) */ | |
8519 | bool | |
8520 | ofpacts_equal_stringwise(const struct ofpact *a, size_t a_len, | |
8521 | const struct ofpact *b, size_t b_len) | |
8522 | { | |
8523 | struct ds a_s = DS_EMPTY_INITIALIZER; | |
efefbcae BP |
8524 | struct ofpact_format_params a_fp = { .s = &a_s }; |
8525 | ofpacts_format(a, a_len, &a_fp); | |
6cc9d77c | 8526 | |
efefbcae BP |
8527 | struct ds b_s = DS_EMPTY_INITIALIZER; |
8528 | struct ofpact_format_params b_fp = { .s = &b_s }; | |
8529 | ofpacts_format(b, b_len, &b_fp); | |
6cc9d77c BP |
8530 | |
8531 | bool equal = !strcmp(ds_cstr(&a_s), ds_cstr(&b_s)); | |
8532 | ||
8533 | ds_destroy(&a_s); | |
8534 | ds_destroy(&b_s); | |
8535 | ||
8536 | return equal; | |
8537 | } | |
8538 | ||
c2d936a4 BP |
8539 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
8540 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
8541 | * | |
8542 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
8543 | * ofpacts_verify()). */ | |
8544 | uint32_t | |
8545 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
8546 | { | |
8547 | const struct ofpact *a; | |
7fdb60a7 | 8548 | |
c2d936a4 BP |
8549 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
8550 | enum ovs_instruction_type inst; | |
b19e8793 | 8551 | |
c2d936a4 BP |
8552 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
8553 | if (a->type == OFPACT_METER) { | |
8554 | return ofpact_get_METER(a)->meter_id; | |
8555 | } else if (inst > OVSINST_OFPIT13_METER) { | |
8556 | break; | |
4cceacb9 | 8557 | } |
c2d936a4 | 8558 | } |
638a19b0 | 8559 | |
c2d936a4 BP |
8560 | return 0; |
8561 | } | |
8562 | \f | |
8563 | /* Formatting ofpacts. */ | |
7395c052 | 8564 | |
c2d936a4 | 8565 | static void |
50f96b10 | 8566 | ofpact_format(const struct ofpact *a, |
efefbcae | 8567 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
8568 | { |
8569 | switch (a->type) { | |
8570 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8571 | case OFPACT_##ENUM: \ | |
efefbcae | 8572 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), fp); \ |
c2d936a4 BP |
8573 | break; |
8574 | OFPACTS | |
8575 | #undef OFPACT | |
8576 | default: | |
8577 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
8578 | } |
8579 | } | |
8580 | ||
8581 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
efefbcae BP |
8582 | * 'ofpacts' to 'fp->s'. If 'port_map' is nonnull, uses it to translate port |
8583 | * numbers to names in output. */ | |
f25d0cf3 BP |
8584 | void |
8585 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
efefbcae | 8586 | const struct ofpact_format_params *fp) |
f25d0cf3 | 8587 | { |
f25d0cf3 | 8588 | if (!ofpacts_len) { |
efefbcae | 8589 | ds_put_format(fp->s, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
8590 | } else { |
8591 | const struct ofpact *a; | |
8592 | ||
8593 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8594 | if (a != ofpacts) { | |
efefbcae | 8595 | ds_put_char(fp->s, ','); |
f25d0cf3 | 8596 | } |
8dd54666 | 8597 | |
efefbcae | 8598 | ofpact_format(a, fp); |
f25d0cf3 BP |
8599 | } |
8600 | } | |
8601 | } | |
8602 | \f | |
8603 | /* Internal use by helpers. */ | |
8604 | ||
ce058104 | 8605 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
8606 | void * |
8607 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
8608 | { | |
8609 | struct ofpact *ofpact; | |
8610 | ||
6fd6ed71 PS |
8611 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
8612 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
8613 | ofpact_init(ofpact, type, len); |
8614 | return ofpact; | |
8615 | } | |
8616 | ||
ce058104 | 8617 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
8618 | void |
8619 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
8620 | { | |
8621 | memset(ofpact, 0, len); | |
8622 | ofpact->type = type; | |
c2d936a4 | 8623 | ofpact->raw = -1; |
f25d0cf3 BP |
8624 | ofpact->len = len; |
8625 | } | |
ce058104 BP |
8626 | |
8627 | /* Implementation of ofpact_finish_<ENUM>(). | |
8628 | * | |
8629 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
8630 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
8631 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
8632 | * the end of ofp-actions.h for more information. |
8633 | * | |
8634 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
8635 | * pointer to the return value of this function. */ | |
8636 | void * | |
34abaa3d | 8637 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 8638 | { |
5308056f JS |
8639 | ptrdiff_t len; |
8640 | ||
6fd6ed71 | 8641 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 8642 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 8643 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 8644 | ofpact->len = len; |
2bd318de | 8645 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
8646 | |
8647 | return ofpacts->header; | |
f25d0cf3 | 8648 | } |
c2d936a4 | 8649 | \f |
cab50449 | 8650 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 8651 | ofpact_parse(enum ofpact_type type, char *value, |
efefbcae | 8652 | const struct ofpact_parse_params *pp) |
c2d936a4 BP |
8653 | { |
8654 | switch (type) { | |
50f96b10 | 8655 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
c2d936a4 | 8656 | case OFPACT_##ENUM: \ |
efefbcae | 8657 | return parse_##ENUM(value, pp); |
c2d936a4 BP |
8658 | OFPACTS |
8659 | #undef OFPACT | |
8660 | default: | |
8661 | OVS_NOT_REACHED(); | |
8662 | } | |
8663 | } | |
8664 | ||
8665 | static bool | |
8666 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
8667 | { | |
8668 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8669 | if (!strcasecmp(name, NAME)) { \ | |
8670 | *type = OFPACT_##ENUM; \ | |
8671 | return true; \ | |
8672 | } | |
8673 | OFPACTS | |
8674 | #undef OFPACT | |
8675 | ||
8676 | return false; | |
8677 | } | |
8678 | ||
8679 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
8680 | * | |
8681 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
8682 | * error. The caller is responsible for freeing the returned string. |
8683 | * | |
8684 | * If 'outer_action' is specified, indicates that the actions being parsed | |
8685 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 8686 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8687 | ofpacts_parse__(char *str, const struct ofpact_parse_params *pp, |
d824b5b7 | 8688 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8689 | { |
8690 | int prev_inst = -1; | |
8691 | enum ofperr retval; | |
8692 | char *key, *value; | |
8693 | bool drop = false; | |
8694 | char *pos; | |
8695 | ||
8696 | pos = str; | |
8697 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
8698 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
8699 | enum ofpact_type type; | |
8700 | char *error = NULL; | |
8701 | ofp_port_t port; | |
8702 | ||
8703 | if (ofpact_type_from_name(key, &type)) { | |
efefbcae | 8704 | error = ofpact_parse(type, value, pp); |
c2d936a4 BP |
8705 | inst = ovs_instruction_type_from_ofpact_type(type); |
8706 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
efefbcae | 8707 | error = parse_set_vlan_vid(value, true, pp); |
c2d936a4 | 8708 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { |
efefbcae | 8709 | error = parse_set_vlan_pcp(value, true, pp); |
c2d936a4 | 8710 | } else if (!strcasecmp(key, "set_nw_ttl")) { |
efefbcae | 8711 | error = parse_SET_IP_TTL(value, pp); |
c2d936a4 | 8712 | } else if (!strcasecmp(key, "pop_vlan")) { |
efefbcae | 8713 | error = parse_pop_vlan(pp); |
c2d936a4 | 8714 | } else if (!strcasecmp(key, "set_tunnel64")) { |
efefbcae | 8715 | error = parse_set_tunnel(value, NXAST_RAW_SET_TUNNEL64, pp); |
7eb4b1f1 | 8716 | } else if (!strcasecmp(key, "load")) { |
efefbcae | 8717 | error = parse_reg_load(value, pp); |
c2d936a4 | 8718 | } else if (!strcasecmp(key, "bundle_load")) { |
efefbcae | 8719 | error = parse_bundle_load(value, pp); |
c2d936a4 BP |
8720 | } else if (!strcasecmp(key, "drop")) { |
8721 | drop = true; | |
8722 | } else if (!strcasecmp(key, "apply_actions")) { | |
8723 | return xstrdup("apply_actions is the default instruction"); | |
efefbcae BP |
8724 | } else if (ofputil_port_from_string(key, pp->port_map, &port)) { |
8725 | ofpact_put_OUTPUT(pp->ofpacts)->port = port; | |
c2d936a4 BP |
8726 | } else { |
8727 | return xasprintf("unknown action %s", key); | |
8728 | } | |
8729 | if (error) { | |
8730 | return error; | |
8731 | } | |
8732 | ||
8733 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
8734 | if (!allow_instructions) { | |
8735 | return xasprintf("only actions are allowed here (not " | |
8736 | "instruction %s)", | |
8737 | ovs_instruction_name_from_type(inst)); | |
8738 | } | |
8739 | if (inst == prev_inst) { | |
8740 | return xasprintf("instruction %s may be specified only once", | |
8741 | ovs_instruction_name_from_type(inst)); | |
8742 | } | |
8743 | } | |
8744 | if (prev_inst != -1 && inst < prev_inst) { | |
8745 | return xasprintf("instruction %s must be specified before %s", | |
8746 | ovs_instruction_name_from_type(inst), | |
8747 | ovs_instruction_name_from_type(prev_inst)); | |
8748 | } | |
8749 | prev_inst = inst; | |
8750 | } | |
c2d936a4 | 8751 | |
efefbcae | 8752 | if (drop && pp->ofpacts->size) { |
c2d936a4 BP |
8753 | return xstrdup("\"drop\" must not be accompanied by any other action " |
8754 | "or instruction"); | |
8755 | } | |
8756 | ||
efefbcae | 8757 | retval = ofpacts_verify(pp->ofpacts->data, pp->ofpacts->size, |
c2d936a4 BP |
8758 | (allow_instructions |
8759 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
8760 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
8761 | outer_action); | |
c2d936a4 BP |
8762 | if (retval) { |
8763 | return xstrdup("Incorrect instruction ordering"); | |
8764 | } | |
8765 | ||
8766 | return NULL; | |
8767 | } | |
8768 | ||
cab50449 | 8769 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8770 | ofpacts_parse(char *str, const struct ofpact_parse_params *pp, |
50f96b10 | 8771 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 | 8772 | { |
efefbcae BP |
8773 | uint32_t orig_size = pp->ofpacts->size; |
8774 | char *error = ofpacts_parse__(str, pp, allow_instructions, outer_action); | |
c2d936a4 | 8775 | if (error) { |
efefbcae | 8776 | pp->ofpacts->size = orig_size; |
c2d936a4 BP |
8777 | } |
8778 | return error; | |
8779 | } | |
8780 | ||
cab50449 | 8781 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8782 | ofpacts_parse_copy(const char *s_, const struct ofpact_parse_params *pp, |
d824b5b7 | 8783 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8784 | { |
8785 | char *error, *s; | |
8786 | ||
efefbcae | 8787 | *pp->usable_protocols = OFPUTIL_P_ANY; |
c2d936a4 BP |
8788 | |
8789 | s = xstrdup(s_); | |
efefbcae | 8790 | error = ofpacts_parse(s, pp, allow_instructions, outer_action); |
c2d936a4 BP |
8791 | free(s); |
8792 | ||
8793 | return error; | |
8794 | } | |
8795 | ||
8796 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
8797 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
8798 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
8799 | * |
8800 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8801 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8802 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8803 | ofpacts_parse_actions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 8804 | { |
efefbcae | 8805 | return ofpacts_parse_copy(s, pp, false, 0); |
c2d936a4 BP |
8806 | } |
8807 | ||
8808 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
8809 | * 'ofpacts'. | |
8810 | * | |
8811 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
8812 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 8813 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8814 | ofpacts_parse_instructions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 8815 | { |
efefbcae | 8816 | return ofpacts_parse_copy(s, pp, true, 0); |
c2d936a4 | 8817 | } |
08d1e234 BP |
8818 | |
8819 | const char * | |
8820 | ofpact_name(enum ofpact_type type) | |
8821 | { | |
8822 | switch (type) { | |
8823 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
8824 | OFPACTS | |
8825 | #undef OFPACT | |
8826 | } | |
8827 | return "<unknown>"; | |
8828 | } | |
c2d936a4 BP |
8829 | \f |
8830 | /* Low-level action decoding and encoding functions. */ | |
8831 | ||
8832 | /* Everything needed to identify a particular OpenFlow action. */ | |
8833 | struct ofpact_hdrs { | |
8834 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
8835 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
8836 | uint8_t ofp_version; /* From ofp_header. */ | |
8837 | }; | |
8838 | ||
8839 | /* Information about a particular OpenFlow action. */ | |
8840 | struct ofpact_raw_instance { | |
8841 | /* The action's identity. */ | |
8842 | struct ofpact_hdrs hdrs; | |
8843 | enum ofp_raw_action_type raw; | |
8844 | ||
8845 | /* Looking up the action. */ | |
8846 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
8847 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
8848 | ||
8849 | /* The action's encoded size. | |
8850 | * | |
8851 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
8852 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
8853 | * OFP_ACTION_ALIGN) == 65528. */ | |
8854 | unsigned short int min_length; | |
8855 | unsigned short int max_length; | |
8856 | ||
8857 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
8858 | * offset of that argument from the beginning of the action and 'arg_len' | |
8859 | * its length, both in bytes. | |
8860 | * | |
8861 | * For actions that take other forms, these are both zero. */ | |
8862 | unsigned short int arg_ofs; | |
8863 | unsigned short int arg_len; | |
8864 | ||
8865 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
8866 | const char *name; | |
8867 | ||
8868 | /* If this action is deprecated, a human-readable string with a brief | |
8869 | * explanation. */ | |
8870 | const char *deprecation; | |
8871 | }; | |
8872 | ||
8873 | /* Action header. */ | |
8874 | struct ofp_action_header { | |
8875 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
8876 | * version (see enum ofp_raw_action_type). | |
8877 | * | |
8878 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
8879 | * designates an OpenFlow vendor ID and that the remainder of the action | |
8880 | * structure has a vendor-defined meaning. | |
8881 | */ | |
8882 | #define OFPAT_VENDOR 0xffff | |
8883 | ovs_be16 type; | |
8884 | ||
8885 | /* Always a multiple of 8. */ | |
8886 | ovs_be16 len; | |
8887 | ||
8888 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
8889 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
8890 | ovs_be32 vendor; | |
8891 | }; | |
8892 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
8893 | ||
c2d936a4 BP |
8894 | static bool |
8895 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
8896 | const struct ofpact_hdrs *b) | |
8897 | { | |
8898 | return (a->vendor == b->vendor | |
8899 | && a->type == b->type | |
8900 | && a->ofp_version == b->ofp_version); | |
8901 | } | |
8902 | ||
8903 | static uint32_t | |
8904 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
8905 | { | |
a02f9a62 BP |
8906 | return hash_2words(hdrs->vendor, |
8907 | ((uint32_t) hdrs->type << 16) | hdrs->ofp_version); | |
c2d936a4 BP |
8908 | } |
8909 | ||
8910 | #include "ofp-actions.inc2" | |
8911 | ||
8912 | static struct hmap * | |
8913 | ofpact_decode_hmap(void) | |
8914 | { | |
8915 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8916 | static struct hmap hmap; | |
8917 | ||
8918 | if (ovsthread_once_start(&once)) { | |
8919 | struct ofpact_raw_instance *inst; | |
8920 | ||
8921 | hmap_init(&hmap); | |
8922 | for (inst = all_raw_instances; | |
8923 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8924 | inst++) { | |
8925 | hmap_insert(&hmap, &inst->decode_node, | |
8926 | ofpact_hdrs_hash(&inst->hdrs)); | |
8927 | } | |
8928 | ovsthread_once_done(&once); | |
8929 | } | |
8930 | return &hmap; | |
8931 | } | |
8932 | ||
8933 | static struct hmap * | |
8934 | ofpact_encode_hmap(void) | |
8935 | { | |
8936 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
8937 | static struct hmap hmap; | |
8938 | ||
8939 | if (ovsthread_once_start(&once)) { | |
8940 | struct ofpact_raw_instance *inst; | |
8941 | ||
8942 | hmap_init(&hmap); | |
8943 | for (inst = all_raw_instances; | |
8944 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
8945 | inst++) { | |
8946 | hmap_insert(&hmap, &inst->encode_node, | |
8947 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
8948 | } | |
8949 | ovsthread_once_done(&once); | |
8950 | } | |
8951 | return &hmap; | |
8952 | } | |
8953 | ||
8954 | static enum ofperr | |
8955 | ofpact_decode_raw(enum ofp_version ofp_version, | |
8956 | const struct ofp_action_header *oah, size_t length, | |
8957 | const struct ofpact_raw_instance **instp) | |
8958 | { | |
8959 | const struct ofpact_raw_instance *inst; | |
8960 | struct ofpact_hdrs hdrs; | |
8961 | ||
8962 | *instp = NULL; | |
8963 | if (length < sizeof *oah) { | |
8964 | return OFPERR_OFPBAC_BAD_LEN; | |
8965 | } | |
8966 | ||
8967 | /* Get base action type. */ | |
8968 | if (oah->type == htons(OFPAT_VENDOR)) { | |
8969 | /* Get vendor. */ | |
8970 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
8971 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
8972 | /* Get extension subtype. */ | |
8973 | const struct ext_action_header *nah; | |
c2d936a4 | 8974 | |
232c1e12 | 8975 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
8976 | if (length < sizeof *nah) { |
8977 | return OFPERR_OFPBAC_BAD_LEN; | |
8978 | } | |
8979 | hdrs.type = ntohs(nah->subtype); | |
8980 | } else { | |
8981 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
8982 | hdrs.vendor); | |
8983 | return OFPERR_OFPBAC_BAD_VENDOR; | |
8984 | } | |
8985 | } else { | |
8986 | hdrs.vendor = 0; | |
8987 | hdrs.type = ntohs(oah->type); | |
8988 | } | |
8989 | ||
8990 | hdrs.ofp_version = ofp_version; | |
8991 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
8992 | ofpact_decode_hmap()) { | |
8993 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
8994 | *instp = inst; | |
8995 | return 0; | |
8996 | } | |
8997 | } | |
8998 | ||
77b7d232 BP |
8999 | VLOG_WARN_RL(&rl, "unknown %s action for vendor %#"PRIx32" and " |
9000 | "type %"PRIu16, ofputil_version_to_string(ofp_version), | |
9001 | hdrs.vendor, hdrs.type); | |
c2d936a4 BP |
9002 | return (hdrs.vendor |
9003 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
9004 | : OFPERR_OFPBAC_BAD_TYPE); | |
9005 | } | |
9006 | ||
9007 | static enum ofperr | |
9008 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9009 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
9010 | { | |
6fd6ed71 | 9011 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
9012 | const struct ofpact_raw_instance *action; |
9013 | unsigned int length; | |
9014 | enum ofperr error; | |
9015 | ||
9016 | *raw = *arg = 0; | |
6fd6ed71 | 9017 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
9018 | if (error) { |
9019 | return error; | |
9020 | } | |
9021 | ||
9022 | if (action->deprecation) { | |
9023 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
9024 | action->name, ofputil_version_to_string(ofp_version), | |
9025 | action->deprecation); | |
9026 | } | |
9027 | ||
9028 | length = ntohs(oah->len); | |
6fd6ed71 | 9029 | if (length > buf->size) { |
b153b990 | 9030 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 9031 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
9032 | return OFPERR_OFPBAC_BAD_LEN; |
9033 | } | |
c2d936a4 BP |
9034 | if (length < action->min_length || length > action->max_length) { |
9035 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
9036 | "[%hu,%hu]", action->name, length, | |
9037 | action->min_length, action->max_length); | |
9038 | return OFPERR_OFPBAC_BAD_LEN; | |
9039 | } | |
9040 | if (length % 8) { | |
9041 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
9042 | "of 8", action->name, length); | |
9043 | return OFPERR_OFPBAC_BAD_LEN; | |
9044 | } | |
9045 | ||
9046 | *raw = action->raw; | |
9047 | *arg = 0; | |
9048 | if (action->arg_len) { | |
9049 | const uint8_t *p; | |
9050 | int i; | |
9051 | ||
9052 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
9053 | for (i = 0; i < action->arg_len; i++) { | |
9054 | *arg = (*arg << 8) | p[i]; | |
9055 | } | |
9056 | } | |
9057 | ||
9058 | ofpbuf_pull(buf, length); | |
9059 | ||
9060 | return 0; | |
9061 | } | |
9062 | ||
9063 | static const struct ofpact_raw_instance * | |
9064 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
9065 | { | |
9066 | const struct ofpact_raw_instance *inst; | |
9067 | ||
9068 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
9069 | ofpact_encode_hmap()) { | |
9070 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
9071 | return inst; | |
9072 | } | |
9073 | } | |
9074 | OVS_NOT_REACHED(); | |
9075 | } | |
9076 | ||
9077 | static void * | |
9078 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9079 | enum ofp_raw_action_type raw, uint64_t arg) | |
9080 | { | |
9081 | const struct ofpact_raw_instance *inst; | |
9082 | struct ofp_action_header *oah; | |
9083 | const struct ofpact_hdrs *hdrs; | |
9084 | ||
9085 | inst = ofpact_raw_lookup(ofp_version, raw); | |
9086 | hdrs = &inst->hdrs; | |
9087 | ||
9088 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
9089 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
9090 | oah->len = htons(inst->min_length); | |
9091 | oah->vendor = htonl(hdrs->vendor); | |
9092 | ||
9093 | switch (hdrs->vendor) { | |
9094 | case 0: | |
9095 | break; | |
9096 | ||
232c1e12 BP |
9097 | case NX_VENDOR_ID: |
9098 | case ONF_VENDOR_ID: { | |
9099 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
9100 | nah->subtype = htons(hdrs->type); |
9101 | break; | |
9102 | } | |
9103 | ||
9104 | default: | |
9105 | OVS_NOT_REACHED(); | |
9106 | } | |
9107 | ||
9108 | if (inst->arg_len) { | |
9109 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
9110 | int i; | |
9111 | ||
9112 | for (i = 0; i < inst->arg_len; i++) { | |
9113 | *--p = arg; | |
9114 | arg >>= 8; | |
9115 | } | |
9116 | } else { | |
9117 | ovs_assert(!arg); | |
9118 | } | |
9119 | ||
9120 | return oah; | |
9121 | } | |
178742f9 BP |
9122 | |
9123 | static void | |
9124 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
9125 | { | |
9126 | struct ofp_action_header *oah; | |
9127 | ||
9ac0aada JR |
9128 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
9129 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
9130 | |
9131 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 9132 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
9133 | } |
9134 |