]>
Commit | Line | Data |
---|---|---|
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 | |
ae6f7530 BP |
433 | static void inconsistent_match(enum ofputil_protocol *usable_protocols); |
434 | ||
4f20179d BP |
435 | /* Returns the ofpact following 'ofpact', except that if 'ofpact' contains |
436 | * nested ofpacts it returns the first one. */ | |
437 | struct ofpact * | |
438 | ofpact_next_flattened(const struct ofpact *ofpact) | |
439 | { | |
440 | switch (ofpact->type) { | |
441 | case OFPACT_OUTPUT: | |
442 | case OFPACT_GROUP: | |
443 | case OFPACT_CONTROLLER: | |
444 | case OFPACT_ENQUEUE: | |
445 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 446 | case OFPACT_OUTPUT_TRUNC: |
4f20179d BP |
447 | case OFPACT_BUNDLE: |
448 | case OFPACT_SET_FIELD: | |
449 | case OFPACT_SET_VLAN_VID: | |
450 | case OFPACT_SET_VLAN_PCP: | |
451 | case OFPACT_STRIP_VLAN: | |
452 | case OFPACT_PUSH_VLAN: | |
453 | case OFPACT_SET_ETH_SRC: | |
454 | case OFPACT_SET_ETH_DST: | |
455 | case OFPACT_SET_IPV4_SRC: | |
456 | case OFPACT_SET_IPV4_DST: | |
457 | case OFPACT_SET_IP_DSCP: | |
458 | case OFPACT_SET_IP_ECN: | |
459 | case OFPACT_SET_IP_TTL: | |
460 | case OFPACT_SET_L4_SRC_PORT: | |
461 | case OFPACT_SET_L4_DST_PORT: | |
462 | case OFPACT_REG_MOVE: | |
463 | case OFPACT_STACK_PUSH: | |
464 | case OFPACT_STACK_POP: | |
465 | case OFPACT_DEC_TTL: | |
466 | case OFPACT_SET_MPLS_LABEL: | |
467 | case OFPACT_SET_MPLS_TC: | |
468 | case OFPACT_SET_MPLS_TTL: | |
469 | case OFPACT_DEC_MPLS_TTL: | |
470 | case OFPACT_PUSH_MPLS: | |
471 | case OFPACT_POP_MPLS: | |
472 | case OFPACT_SET_TUNNEL: | |
473 | case OFPACT_SET_QUEUE: | |
474 | case OFPACT_POP_QUEUE: | |
475 | case OFPACT_FIN_TIMEOUT: | |
476 | case OFPACT_RESUBMIT: | |
477 | case OFPACT_LEARN: | |
478 | case OFPACT_CONJUNCTION: | |
479 | case OFPACT_MULTIPATH: | |
480 | case OFPACT_NOTE: | |
481 | case OFPACT_EXIT: | |
482 | case OFPACT_SAMPLE: | |
483 | case OFPACT_UNROLL_XLATE: | |
72fe7578 | 484 | case OFPACT_CT_CLEAR: |
4f20179d | 485 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 486 | case OFPACT_DEBUG_SLOW: |
4f20179d BP |
487 | case OFPACT_METER: |
488 | case OFPACT_CLEAR_ACTIONS: | |
489 | case OFPACT_WRITE_METADATA: | |
490 | case OFPACT_GOTO_TABLE: | |
491 | case OFPACT_NAT: | |
f839892a JS |
492 | case OFPACT_ENCAP: |
493 | case OFPACT_DECAP: | |
491e05c2 | 494 | case OFPACT_DEC_NSH_TTL: |
4f20179d BP |
495 | return ofpact_next(ofpact); |
496 | ||
7ae62a67 WT |
497 | case OFPACT_CLONE: |
498 | return ofpact_get_CLONE(ofpact)->actions; | |
499 | ||
4f20179d BP |
500 | case OFPACT_CT: |
501 | return ofpact_get_CT(ofpact)->actions; | |
502 | ||
503 | case OFPACT_WRITE_ACTIONS: | |
504 | return ofpact_get_WRITE_ACTIONS(ofpact)->actions; | |
505 | } | |
506 | ||
507 | OVS_NOT_REACHED(); | |
508 | } | |
509 | ||
d824b5b7 JS |
510 | /* Pull off existing actions or instructions. Used by nesting actions to keep |
511 | * ofpacts_parse() oblivious of actions nesting. | |
512 | * | |
513 | * Push the actions back on after nested parsing, e.g.: | |
514 | * | |
515 | * size_t ofs = ofpacts_pull(ofpacts); | |
516 | * ...nested parsing... | |
517 | * ofpbuf_push_uninit(ofpacts, ofs); | |
518 | */ | |
519 | static size_t | |
520 | ofpacts_pull(struct ofpbuf *ofpacts) | |
521 | { | |
522 | size_t ofs; | |
523 | ||
d824b5b7 JS |
524 | ofs = ofpacts->size; |
525 | ofpbuf_pull(ofpacts, ofs); | |
526 | ||
527 | return ofs; | |
528 | } | |
c2d936a4 BP |
529 | |
530 | #include "ofp-actions.inc1" | |
531 | \f | |
532 | /* Output actions. */ | |
533 | ||
534 | /* Action structure for OFPAT10_OUTPUT, which sends packets out 'port'. | |
535 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
536 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
537 | * packet should be sent. */ | |
538 | struct ofp10_action_output { | |
539 | ovs_be16 type; /* OFPAT10_OUTPUT. */ | |
540 | ovs_be16 len; /* Length is 8. */ | |
541 | ovs_be16 port; /* Output port. */ | |
542 | ovs_be16 max_len; /* Max length to send to controller. */ | |
e45e72f1 | 543 | }; |
c2d936a4 BP |
544 | OFP_ASSERT(sizeof(struct ofp10_action_output) == 8); |
545 | ||
546 | /* Action structure for OFPAT_OUTPUT, which sends packets out 'port'. | |
547 | * When the 'port' is the OFPP_CONTROLLER, 'max_len' indicates the max | |
548 | * number of bytes to send. A 'max_len' of zero means no bytes of the | |
549 | * packet should be sent.*/ | |
550 | struct ofp11_action_output { | |
551 | ovs_be16 type; /* OFPAT11_OUTPUT. */ | |
552 | ovs_be16 len; /* Length is 16. */ | |
553 | ovs_be32 port; /* Output port. */ | |
554 | ovs_be16 max_len; /* Max length to send to controller. */ | |
555 | uint8_t pad[6]; /* Pad to 64 bits. */ | |
556 | }; | |
557 | OFP_ASSERT(sizeof(struct ofp11_action_output) == 16); | |
e45e72f1 | 558 | |
f25d0cf3 | 559 | static enum ofperr |
c2d936a4 | 560 | decode_OFPAT_RAW10_OUTPUT(const struct ofp10_action_output *oao, |
f3cd3ac7 | 561 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 562 | struct ofpbuf *out) |
f25d0cf3 BP |
563 | { |
564 | struct ofpact_output *output; | |
565 | ||
566 | output = ofpact_put_OUTPUT(out); | |
4e022ec0 | 567 | output->port = u16_to_ofp(ntohs(oao->port)); |
f25d0cf3 BP |
568 | output->max_len = ntohs(oao->max_len); |
569 | ||
57ad4e9e | 570 | return ofpact_check_output_port(output->port, OFPP_MAX); |
f25d0cf3 BP |
571 | } |
572 | ||
573 | static enum ofperr | |
c2d936a4 | 574 | decode_OFPAT_RAW11_OUTPUT(const struct ofp11_action_output *oao, |
f3cd3ac7 JS |
575 | enum ofp_version ofp_version OVS_UNUSED, |
576 | struct ofpbuf *out) | |
f25d0cf3 | 577 | { |
c2d936a4 BP |
578 | struct ofpact_output *output; |
579 | enum ofperr error; | |
f25d0cf3 | 580 | |
c2d936a4 BP |
581 | output = ofpact_put_OUTPUT(out); |
582 | output->max_len = ntohs(oao->max_len); | |
583 | ||
584 | error = ofputil_port_from_ofp11(oao->port, &output->port); | |
585 | if (error) { | |
586 | return error; | |
f25d0cf3 | 587 | } |
c2d936a4 BP |
588 | |
589 | return ofpact_check_output_port(output->port, OFPP_MAX); | |
f25d0cf3 BP |
590 | } |
591 | ||
592 | static void | |
c2d936a4 BP |
593 | encode_OUTPUT(const struct ofpact_output *output, |
594 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 595 | { |
c2d936a4 BP |
596 | if (ofp_version == OFP10_VERSION) { |
597 | struct ofp10_action_output *oao; | |
f25d0cf3 | 598 | |
c2d936a4 BP |
599 | oao = put_OFPAT10_OUTPUT(out); |
600 | oao->port = htons(ofp_to_u16(output->port)); | |
601 | oao->max_len = htons(output->max_len); | |
602 | } else { | |
603 | struct ofp11_action_output *oao; | |
604 | ||
605 | oao = put_OFPAT11_OUTPUT(out); | |
606 | oao->port = ofputil_port_to_ofp11(output->port); | |
607 | oao->max_len = htons(output->max_len); | |
608 | } | |
f25d0cf3 BP |
609 | } |
610 | ||
aaca4fe0 | 611 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
612 | parse_truncate_subfield(const char *arg_, |
613 | const struct ofpact_parse_params *pp, | |
614 | struct ofpact_output_trunc *output_trunc) | |
aaca4fe0 WT |
615 | { |
616 | char *key, *value; | |
617 | char *arg = CONST_CAST(char *, arg_); | |
618 | ||
619 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
620 | if (!strcmp(key, "port")) { | |
efefbcae | 621 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 622 | &output_trunc->port)) { |
aaca4fe0 WT |
623 | return xasprintf("output to unknown truncate port: %s", |
624 | value); | |
625 | } | |
626 | if (ofp_to_u16(output_trunc->port) > ofp_to_u16(OFPP_MAX)) { | |
627 | if (output_trunc->port != OFPP_LOCAL && | |
628 | output_trunc->port != OFPP_IN_PORT) | |
629 | return xasprintf("output to unsupported truncate port: %s", | |
630 | value); | |
631 | } | |
632 | } else if (!strcmp(key, "max_len")) { | |
633 | char *err; | |
634 | ||
635 | err = str_to_u32(value, &output_trunc->max_len); | |
636 | if (err) { | |
637 | return err; | |
638 | } | |
639 | } else { | |
640 | return xasprintf("invalid key '%s' in output_trunc argument", | |
641 | key); | |
642 | } | |
643 | } | |
644 | return NULL; | |
645 | } | |
646 | ||
cab50449 | 647 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 648 | parse_OUTPUT(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 649 | { |
21b2fa61 | 650 | if (strstr(arg, "port") && strstr(arg, "max_len")) { |
aaca4fe0 WT |
651 | struct ofpact_output_trunc *output_trunc; |
652 | ||
efefbcae BP |
653 | output_trunc = ofpact_put_OUTPUT_TRUNC(pp->ofpacts); |
654 | return parse_truncate_subfield(arg, pp, output_trunc); | |
7df14f8b | 655 | } |
c2d936a4 | 656 | |
7df14f8b | 657 | ofp_port_t port; |
efefbcae BP |
658 | if (ofputil_port_from_string(arg, pp->port_map, &port)) { |
659 | struct ofpact_output *output = ofpact_put_OUTPUT(pp->ofpacts); | |
7df14f8b BP |
660 | output->port = port; |
661 | output->max_len = output->port == OFPP_CONTROLLER ? UINT16_MAX : 0; | |
c2d936a4 | 662 | return NULL; |
f25d0cf3 | 663 | } |
7df14f8b BP |
664 | |
665 | struct mf_subfield src; | |
666 | char *error = mf_parse_subfield(&src, arg); | |
667 | if (!error) { | |
668 | struct ofpact_output_reg *output_reg; | |
669 | ||
efefbcae | 670 | output_reg = ofpact_put_OUTPUT_REG(pp->ofpacts); |
7df14f8b BP |
671 | output_reg->max_len = UINT16_MAX; |
672 | output_reg->src = src; | |
673 | return NULL; | |
674 | } | |
675 | free(error); | |
676 | ||
677 | return xasprintf("%s: output to unknown port", arg); | |
c2d936a4 | 678 | } |
f25d0cf3 | 679 | |
c2d936a4 | 680 | static void |
50f96b10 | 681 | format_OUTPUT(const struct ofpact_output *a, |
efefbcae | 682 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
683 | { |
684 | if (ofp_to_u16(a->port) < ofp_to_u16(OFPP_MAX)) { | |
efefbcae | 685 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
50f96b10 | 686 | } |
efefbcae | 687 | ofputil_format_port(a->port, fp->port_map, fp->s); |
50f96b10 | 688 | if (a->port == OFPP_CONTROLLER) { |
efefbcae | 689 | ds_put_format(fp->s, ":%"PRIu16, a->max_len); |
c2d936a4 | 690 | } |
f25d0cf3 | 691 | } |
ae6f7530 BP |
692 | |
693 | static enum ofperr | |
694 | check_OUTPUT(const struct ofpact_output *a, | |
695 | const struct ofpact_check_params *cp) | |
696 | { | |
697 | return ofpact_check_output_port(a->port, cp->max_ports); | |
698 | } | |
c2d936a4 BP |
699 | \f |
700 | /* Group actions. */ | |
f25d0cf3 BP |
701 | |
702 | static enum ofperr | |
88c8ca26 | 703 | decode_OFPAT_RAW_GROUP(uint32_t group_id, |
f3cd3ac7 JS |
704 | enum ofp_version ofp_version OVS_UNUSED, |
705 | struct ofpbuf *out) | |
f25d0cf3 | 706 | { |
c2d936a4 BP |
707 | ofpact_put_GROUP(out)->group_id = group_id; |
708 | return 0; | |
709 | } | |
f25d0cf3 | 710 | |
c2d936a4 BP |
711 | static void |
712 | encode_GROUP(const struct ofpact_group *group, | |
713 | enum ofp_version ofp_version, struct ofpbuf *out) | |
714 | { | |
88c8ca26 | 715 | put_OFPAT_GROUP(out, ofp_version, group->group_id); |
c2d936a4 | 716 | } |
f25d0cf3 | 717 | |
cab50449 | 718 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 719 | parse_GROUP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 720 | { |
efefbcae | 721 | return str_to_u32(arg, &ofpact_put_GROUP(pp->ofpacts)->group_id); |
f25d0cf3 BP |
722 | } |
723 | ||
724 | static void | |
50f96b10 | 725 | format_GROUP(const struct ofpact_group *a, |
efefbcae | 726 | const struct ofpact_format_params *fp) |
f25d0cf3 | 727 | { |
efefbcae | 728 | ds_put_format(fp->s, "%sgroup:%s%"PRIu32, |
b1c5bf1f | 729 | colors.special, colors.end, a->group_id); |
f25d0cf3 | 730 | } |
ae6f7530 BP |
731 | |
732 | static enum ofperr | |
733 | check_GROUP(const struct ofpact_group *a OVS_UNUSED, | |
734 | const struct ofpact_check_params *cp OVS_UNUSED) | |
735 | { | |
736 | return 0; | |
737 | } | |
c2d936a4 BP |
738 | \f |
739 | /* Action structure for NXAST_CONTROLLER. | |
740 | * | |
741 | * This generalizes using OFPAT_OUTPUT to send a packet to OFPP_CONTROLLER. In | |
742 | * addition to the 'max_len' that OFPAT_OUTPUT supports, it also allows | |
743 | * specifying: | |
744 | * | |
745 | * - 'reason': The reason code to use in the ofp_packet_in or nx_packet_in. | |
746 | * | |
747 | * - 'controller_id': The ID of the controller connection to which the | |
748 | * ofp_packet_in should be sent. The ofp_packet_in or nx_packet_in is | |
749 | * sent only to controllers that have the specified controller connection | |
750 | * ID. See "struct nx_controller_id" for more information. */ | |
751 | struct nx_action_controller { | |
752 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
753 | ovs_be16 len; /* Length is 16. */ | |
754 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
755 | ovs_be16 subtype; /* NXAST_CONTROLLER. */ | |
756 | ovs_be16 max_len; /* Maximum length to send to controller. */ | |
757 | ovs_be16 controller_id; /* Controller ID to send packet-in. */ | |
758 | uint8_t reason; /* enum ofp_packet_in_reason (OFPR_*). */ | |
759 | uint8_t zero; /* Must be zero. */ | |
760 | }; | |
761 | OFP_ASSERT(sizeof(struct nx_action_controller) == 16); | |
f25d0cf3 | 762 | |
77ab5fd2 BP |
763 | /* Properties for NXAST_CONTROLLER2. |
764 | * | |
765 | * For more information on the effect of NXAC2PT_PAUSE, see the large comment | |
766 | * on NXT_PACKET_IN2 in nicira-ext.h */ | |
bdcad671 BP |
767 | enum nx_action_controller2_prop_type { |
768 | NXAC2PT_MAX_LEN, /* ovs_be16 max bytes to send (default all). */ | |
769 | NXAC2PT_CONTROLLER_ID, /* ovs_be16 dest controller ID (default 0). */ | |
770 | NXAC2PT_REASON, /* uint8_t reason (OFPR_*), default 0. */ | |
771 | NXAC2PT_USERDATA, /* Data to copy into NXPINT_USERDATA. */ | |
77ab5fd2 | 772 | NXAC2PT_PAUSE, /* Flag to pause pipeline to resume later. */ |
206ddb9a | 773 | NXAC2PT_METER_ID, /* ovs_b32 meter (default NX_CTLR_NO_METER). */ |
bdcad671 BP |
774 | }; |
775 | ||
aad28f47 BP |
776 | /* The action structure for NXAST_CONTROLLER2 is "struct ext_action_header", |
777 | * followed by NXAC2PT_* properties. */ | |
bdcad671 | 778 | |
c2d936a4 BP |
779 | static enum ofperr |
780 | decode_NXAST_RAW_CONTROLLER(const struct nx_action_controller *nac, | |
f3cd3ac7 | 781 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 782 | struct ofpbuf *out) |
f25d0cf3 BP |
783 | { |
784 | struct ofpact_controller *oc; | |
785 | ||
786 | oc = ofpact_put_CONTROLLER(out); | |
bdcad671 | 787 | oc->ofpact.raw = NXAST_RAW_CONTROLLER; |
f25d0cf3 BP |
788 | oc->max_len = ntohs(nac->max_len); |
789 | oc->controller_id = ntohs(nac->controller_id); | |
790 | oc->reason = nac->reason; | |
206ddb9a | 791 | oc->meter_id = NX_CTLR_NO_METER; |
ce058104 | 792 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 BP |
793 | |
794 | return 0; | |
795 | } | |
796 | ||
797 | static enum ofperr | |
aad28f47 | 798 | decode_NXAST_RAW_CONTROLLER2(const struct ext_action_header *eah, |
bdcad671 BP |
799 | enum ofp_version ofp_version OVS_UNUSED, |
800 | struct ofpbuf *out) | |
801 | { | |
aad28f47 | 802 | if (!is_all_zeros(eah->pad, sizeof eah->pad)) { |
bdcad671 BP |
803 | return OFPERR_NXBRC_MUST_BE_ZERO; |
804 | } | |
805 | ||
806 | size_t start_ofs = out->size; | |
807 | struct ofpact_controller *oc = ofpact_put_CONTROLLER(out); | |
808 | oc->ofpact.raw = NXAST_RAW_CONTROLLER2; | |
809 | oc->max_len = UINT16_MAX; | |
810 | oc->reason = OFPR_ACTION; | |
206ddb9a | 811 | oc->meter_id = NX_CTLR_NO_METER; |
bdcad671 BP |
812 | |
813 | struct ofpbuf properties; | |
aad28f47 BP |
814 | ofpbuf_use_const(&properties, eah, ntohs(eah->len)); |
815 | ofpbuf_pull(&properties, sizeof *eah); | |
bdcad671 BP |
816 | |
817 | while (properties.size > 0) { | |
818 | struct ofpbuf payload; | |
819 | uint64_t type; | |
820 | ||
821 | enum ofperr error = ofpprop_pull(&properties, &payload, &type); | |
822 | if (error) { | |
823 | return error; | |
824 | } | |
825 | ||
826 | switch (type) { | |
827 | case NXAC2PT_MAX_LEN: | |
828 | error = ofpprop_parse_u16(&payload, &oc->max_len); | |
829 | break; | |
830 | ||
831 | case NXAC2PT_CONTROLLER_ID: | |
832 | error = ofpprop_parse_u16(&payload, &oc->controller_id); | |
833 | break; | |
834 | ||
835 | case NXAC2PT_REASON: { | |
836 | uint8_t u8; | |
837 | error = ofpprop_parse_u8(&payload, &u8); | |
838 | oc->reason = u8; | |
839 | break; | |
840 | } | |
841 | ||
842 | case NXAC2PT_USERDATA: | |
843 | out->size = start_ofs + OFPACT_CONTROLLER_SIZE; | |
844 | ofpbuf_put(out, payload.msg, ofpbuf_msgsize(&payload)); | |
845 | oc = ofpbuf_at_assert(out, start_ofs, sizeof *oc); | |
846 | oc->userdata_len = ofpbuf_msgsize(&payload); | |
847 | break; | |
848 | ||
77ab5fd2 BP |
849 | case NXAC2PT_PAUSE: |
850 | oc->pause = true; | |
851 | break; | |
852 | ||
206ddb9a JP |
853 | case NXAC2PT_METER_ID: |
854 | error = ofpprop_parse_u32(&payload, &oc->meter_id); | |
855 | break; | |
856 | ||
bdcad671 BP |
857 | default: |
858 | error = OFPPROP_UNKNOWN(false, "NXAST_RAW_CONTROLLER2", type); | |
859 | break; | |
860 | } | |
861 | if (error) { | |
862 | return error; | |
863 | } | |
864 | } | |
865 | ||
ce058104 | 866 | ofpact_finish_CONTROLLER(out, &oc); |
bdcad671 | 867 | |
c2d936a4 | 868 | return 0; |
f25d0cf3 BP |
869 | } |
870 | ||
c2d936a4 BP |
871 | static void |
872 | encode_CONTROLLER(const struct ofpact_controller *controller, | |
873 | enum ofp_version ofp_version OVS_UNUSED, | |
874 | struct ofpbuf *out) | |
4cceacb9 | 875 | { |
bdcad671 | 876 | if (controller->userdata_len |
77ab5fd2 | 877 | || controller->pause |
206ddb9a | 878 | || controller->meter_id != NX_CTLR_NO_METER |
bdcad671 BP |
879 | || controller->ofpact.raw == NXAST_RAW_CONTROLLER2) { |
880 | size_t start_ofs = out->size; | |
881 | put_NXAST_CONTROLLER2(out); | |
882 | if (controller->max_len != UINT16_MAX) { | |
883 | ofpprop_put_u16(out, NXAC2PT_MAX_LEN, controller->max_len); | |
884 | } | |
885 | if (controller->controller_id != 0) { | |
886 | ofpprop_put_u16(out, NXAC2PT_CONTROLLER_ID, | |
887 | controller->controller_id); | |
888 | } | |
889 | if (controller->reason != OFPR_ACTION) { | |
890 | ofpprop_put_u8(out, NXAC2PT_REASON, controller->reason); | |
891 | } | |
892 | if (controller->userdata_len != 0) { | |
893 | ofpprop_put(out, NXAC2PT_USERDATA, controller->userdata, | |
894 | controller->userdata_len); | |
895 | } | |
77ab5fd2 BP |
896 | if (controller->pause) { |
897 | ofpprop_put_flag(out, NXAC2PT_PAUSE); | |
898 | } | |
206ddb9a JP |
899 | if (controller->meter_id != NX_CTLR_NO_METER) { |
900 | ofpprop_put_u32(out, NXAC2PT_METER_ID, controller->meter_id); | |
901 | } | |
bdcad671 BP |
902 | pad_ofpat(out, start_ofs); |
903 | } else { | |
904 | struct nx_action_controller *nac; | |
4cceacb9 | 905 | |
bdcad671 BP |
906 | nac = put_NXAST_CONTROLLER(out); |
907 | nac->max_len = htons(controller->max_len); | |
908 | nac->controller_id = htons(controller->controller_id); | |
909 | nac->reason = controller->reason; | |
910 | } | |
c2d936a4 BP |
911 | } |
912 | ||
cab50449 | 913 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 914 | parse_CONTROLLER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
915 | { |
916 | enum ofp_packet_in_reason reason = OFPR_ACTION; | |
917 | uint16_t controller_id = 0; | |
918 | uint16_t max_len = UINT16_MAX; | |
206ddb9a | 919 | uint32_t meter_id = NX_CTLR_NO_METER; |
bdcad671 | 920 | const char *userdata = NULL; |
77ab5fd2 | 921 | bool pause = false; |
c2d936a4 BP |
922 | |
923 | if (!arg[0]) { | |
924 | /* Use defaults. */ | |
925 | } else if (strspn(arg, "0123456789") == strlen(arg)) { | |
926 | char *error = str_to_u16(arg, "max_len", &max_len); | |
927 | if (error) { | |
928 | return error; | |
929 | } | |
930 | } else { | |
931 | char *name, *value; | |
932 | ||
933 | while (ofputil_parse_key_value(&arg, &name, &value)) { | |
934 | if (!strcmp(name, "reason")) { | |
935 | if (!ofputil_packet_in_reason_from_string(value, &reason)) { | |
936 | return xasprintf("unknown reason \"%s\"", value); | |
937 | } | |
938 | } else if (!strcmp(name, "max_len")) { | |
939 | char *error = str_to_u16(value, "max_len", &max_len); | |
940 | if (error) { | |
941 | return error; | |
942 | } | |
943 | } else if (!strcmp(name, "id")) { | |
944 | char *error = str_to_u16(value, "id", &controller_id); | |
945 | if (error) { | |
946 | return error; | |
947 | } | |
bdcad671 BP |
948 | } else if (!strcmp(name, "userdata")) { |
949 | userdata = value; | |
77ab5fd2 BP |
950 | } else if (!strcmp(name, "pause")) { |
951 | pause = true; | |
206ddb9a JP |
952 | } else if (!strcmp(name, "meter_id")) { |
953 | char *error = str_to_u32(value, &meter_id); | |
954 | if (error) { | |
955 | return error; | |
956 | } | |
c2d936a4 BP |
957 | } else { |
958 | return xasprintf("unknown key \"%s\" parsing controller " | |
959 | "action", name); | |
960 | } | |
961 | } | |
4cceacb9 JS |
962 | } |
963 | ||
206ddb9a JP |
964 | if (reason == OFPR_ACTION && controller_id == 0 && !userdata && !pause |
965 | && meter_id == NX_CTLR_NO_METER) { | |
c2d936a4 | 966 | struct ofpact_output *output; |
4cceacb9 | 967 | |
efefbcae | 968 | output = ofpact_put_OUTPUT(pp->ofpacts); |
c2d936a4 BP |
969 | output->port = OFPP_CONTROLLER; |
970 | output->max_len = max_len; | |
971 | } else { | |
972 | struct ofpact_controller *controller; | |
973 | ||
efefbcae | 974 | controller = ofpact_put_CONTROLLER(pp->ofpacts); |
c2d936a4 BP |
975 | controller->max_len = max_len; |
976 | controller->reason = reason; | |
977 | controller->controller_id = controller_id; | |
77ab5fd2 | 978 | controller->pause = pause; |
206ddb9a | 979 | controller->meter_id = meter_id; |
bdcad671 BP |
980 | |
981 | if (userdata) { | |
efefbcae BP |
982 | size_t start_ofs = pp->ofpacts->size; |
983 | const char *end = ofpbuf_put_hex(pp->ofpacts, userdata, NULL); | |
bdcad671 BP |
984 | if (*end) { |
985 | return xstrdup("bad hex digit in `controller' " | |
986 | "action `userdata'"); | |
987 | } | |
efefbcae BP |
988 | size_t userdata_len = pp->ofpacts->size - start_ofs; |
989 | controller = pp->ofpacts->header; | |
bdcad671 BP |
990 | controller->userdata_len = userdata_len; |
991 | } | |
efefbcae | 992 | ofpact_finish_CONTROLLER(pp->ofpacts, &controller); |
c2d936a4 BP |
993 | } |
994 | ||
995 | return NULL; | |
4cceacb9 JS |
996 | } |
997 | ||
bdcad671 BP |
998 | static void |
999 | format_hex_arg(struct ds *s, const uint8_t *data, size_t len) | |
1000 | { | |
1001 | for (size_t i = 0; i < len; i++) { | |
1002 | if (i) { | |
1003 | ds_put_char(s, '.'); | |
1004 | } | |
1005 | ds_put_format(s, "%02"PRIx8, data[i]); | |
1006 | } | |
1007 | } | |
1008 | ||
f25d0cf3 | 1009 | static void |
50f96b10 | 1010 | format_CONTROLLER(const struct ofpact_controller *a, |
efefbcae | 1011 | const struct ofpact_format_params *fp) |
f25d0cf3 | 1012 | { |
77ab5fd2 | 1013 | if (a->reason == OFPR_ACTION && !a->controller_id && !a->userdata_len |
206ddb9a | 1014 | && !a->pause && a->meter_id == NX_CTLR_NO_METER) { |
efefbcae | 1015 | ds_put_format(fp->s, "%sCONTROLLER:%s%"PRIu16, |
b1c5bf1f | 1016 | colors.special, colors.end, a->max_len); |
c2d936a4 BP |
1017 | } else { |
1018 | enum ofp_packet_in_reason reason = a->reason; | |
f25d0cf3 | 1019 | |
efefbcae | 1020 | ds_put_format(fp->s, "%scontroller(%s", colors.paren, colors.end); |
c2d936a4 BP |
1021 | if (reason != OFPR_ACTION) { |
1022 | char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE]; | |
1023 | ||
efefbcae | 1024 | ds_put_format(fp->s, "%sreason=%s%s,", colors.param, colors.end, |
c2d936a4 BP |
1025 | ofputil_packet_in_reason_to_string( |
1026 | reason, reasonbuf, sizeof reasonbuf)); | |
1027 | } | |
1028 | if (a->max_len != UINT16_MAX) { | |
efefbcae | 1029 | ds_put_format(fp->s, "%smax_len=%s%"PRIu16",", |
b1c5bf1f | 1030 | colors.param, colors.end, a->max_len); |
c2d936a4 BP |
1031 | } |
1032 | if (a->controller_id != 0) { | |
efefbcae | 1033 | ds_put_format(fp->s, "%sid=%s%"PRIu16",", |
b1c5bf1f | 1034 | colors.param, colors.end, a->controller_id); |
c2d936a4 | 1035 | } |
bdcad671 | 1036 | if (a->userdata_len) { |
efefbcae BP |
1037 | ds_put_format(fp->s, "%suserdata=%s", colors.param, colors.end); |
1038 | format_hex_arg(fp->s, a->userdata, a->userdata_len); | |
1039 | ds_put_char(fp->s, ','); | |
bdcad671 | 1040 | } |
77ab5fd2 | 1041 | if (a->pause) { |
efefbcae | 1042 | ds_put_format(fp->s, "%spause%s,", colors.value, colors.end); |
77ab5fd2 | 1043 | } |
206ddb9a JP |
1044 | if (a->meter_id != NX_CTLR_NO_METER) { |
1045 | ds_put_format(fp->s, "%smeter_id=%s%"PRIu32",", | |
1046 | colors.param, colors.end, a->meter_id); | |
1047 | } | |
efefbcae BP |
1048 | ds_chomp(fp->s, ','); |
1049 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 | 1050 | } |
f25d0cf3 | 1051 | } |
ae6f7530 BP |
1052 | |
1053 | static enum ofperr | |
1054 | check_CONTROLLER(const struct ofpact_controller *a OVS_UNUSED, | |
1055 | const struct ofpact_check_params *cp OVS_UNUSED) | |
1056 | { | |
1057 | return 0; | |
1058 | } | |
c2d936a4 BP |
1059 | \f |
1060 | /* Enqueue action. */ | |
1061 | struct ofp10_action_enqueue { | |
1062 | ovs_be16 type; /* OFPAT10_ENQUEUE. */ | |
1063 | ovs_be16 len; /* Len is 16. */ | |
1064 | ovs_be16 port; /* Port that queue belongs. Should | |
1065 | refer to a valid physical port | |
1066 | (i.e. < OFPP_MAX) or OFPP_IN_PORT. */ | |
1067 | uint8_t pad[6]; /* Pad for 64-bit alignment. */ | |
1068 | ovs_be32 queue_id; /* Where to enqueue the packets. */ | |
1069 | }; | |
1070 | OFP_ASSERT(sizeof(struct ofp10_action_enqueue) == 16); | |
f25d0cf3 | 1071 | |
c2d967a5 | 1072 | static enum ofperr |
c2d936a4 | 1073 | decode_OFPAT_RAW10_ENQUEUE(const struct ofp10_action_enqueue *oae, |
f3cd3ac7 | 1074 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1075 | struct ofpbuf *out) |
c2d967a5 | 1076 | { |
c2d936a4 | 1077 | struct ofpact_enqueue *enqueue; |
c2d967a5 | 1078 | |
c2d936a4 BP |
1079 | enqueue = ofpact_put_ENQUEUE(out); |
1080 | enqueue->port = u16_to_ofp(ntohs(oae->port)); | |
1081 | enqueue->queue = ntohl(oae->queue_id); | |
1082 | if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX) | |
1083 | && enqueue->port != OFPP_IN_PORT | |
1084 | && enqueue->port != OFPP_LOCAL) { | |
1085 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1086 | } | |
1087 | return 0; | |
c2d967a5 MM |
1088 | } |
1089 | ||
c2d936a4 BP |
1090 | static void |
1091 | encode_ENQUEUE(const struct ofpact_enqueue *enqueue, | |
1092 | enum ofp_version ofp_version, struct ofpbuf *out) | |
c2d967a5 | 1093 | { |
c2d936a4 BP |
1094 | if (ofp_version == OFP10_VERSION) { |
1095 | struct ofp10_action_enqueue *oae; | |
c2d967a5 | 1096 | |
c2d936a4 BP |
1097 | oae = put_OFPAT10_ENQUEUE(out); |
1098 | oae->port = htons(ofp_to_u16(enqueue->port)); | |
1099 | oae->queue_id = htonl(enqueue->queue); | |
1100 | } else { | |
0f2aaee9 BP |
1101 | put_OFPAT_SET_QUEUE(out, ofp_version, enqueue->queue); |
1102 | ||
1103 | struct ofp11_action_output *oao = put_OFPAT11_OUTPUT(out); | |
1104 | oao->port = ofputil_port_to_ofp11(enqueue->port); | |
1105 | oao->max_len = OVS_BE16_MAX; | |
1106 | ||
1107 | put_NXAST_POP_QUEUE(out); | |
c2d967a5 | 1108 | } |
c2d936a4 | 1109 | } |
c2d967a5 | 1110 | |
cab50449 | 1111 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1112 | parse_ENQUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
1113 | { |
1114 | char *sp = NULL; | |
1115 | char *port = strtok_r(arg, ":q,", &sp); | |
1116 | char *queue = strtok_r(NULL, "", &sp); | |
1117 | struct ofpact_enqueue *enqueue; | |
c2d967a5 | 1118 | |
c2d936a4 BP |
1119 | if (port == NULL || queue == NULL) { |
1120 | return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or " | |
1121 | "\"enqueue(PORT,QUEUE)\""); | |
c2d967a5 MM |
1122 | } |
1123 | ||
efefbcae BP |
1124 | enqueue = ofpact_put_ENQUEUE(pp->ofpacts); |
1125 | if (!ofputil_port_from_string(port, pp->port_map, &enqueue->port)) { | |
c2d936a4 BP |
1126 | return xasprintf("%s: enqueue to unknown port", port); |
1127 | } | |
1128 | return str_to_u32(queue, &enqueue->queue); | |
c2d967a5 MM |
1129 | } |
1130 | ||
c2d936a4 | 1131 | static void |
50f96b10 | 1132 | format_ENQUEUE(const struct ofpact_enqueue *a, |
efefbcae | 1133 | const struct ofpact_format_params *fp) |
29089a54 | 1134 | { |
efefbcae BP |
1135 | ds_put_format(fp->s, "%senqueue:%s", colors.param, colors.end); |
1136 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
1137 | ds_put_format(fp->s, ":%"PRIu32, a->queue); | |
c2d936a4 | 1138 | } |
ae6f7530 BP |
1139 | |
1140 | static enum ofperr | |
1141 | check_ENQUEUE(const struct ofpact_enqueue *a, | |
1142 | const struct ofpact_check_params *cp) | |
1143 | { | |
1144 | if (ofp_to_u16(a->port) >= ofp_to_u16(cp->max_ports) | |
1145 | && a->port != OFPP_IN_PORT | |
1146 | && a->port != OFPP_LOCAL) { | |
1147 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
1148 | } | |
1149 | return 0; | |
1150 | } | |
c2d936a4 BP |
1151 | \f |
1152 | /* Action structure for NXAST_OUTPUT_REG. | |
1153 | * | |
1154 | * Outputs to the OpenFlow port number written to src[ofs:ofs+nbits]. | |
1155 | * | |
1156 | * The format and semantics of 'src' and 'ofs_nbits' are similar to those for | |
1157 | * the NXAST_REG_LOAD action. | |
1158 | * | |
1159 | * The acceptable nxm_header values for 'src' are the same as the acceptable | |
1160 | * nxm_header values for the 'src' field of NXAST_REG_MOVE. | |
1161 | * | |
1162 | * The 'max_len' field indicates the number of bytes to send when the chosen | |
1163 | * port is OFPP_CONTROLLER. Its semantics are equivalent to the 'max_len' | |
1164 | * field of OFPAT_OUTPUT. | |
1165 | * | |
1166 | * The 'zero' field is required to be zeroed for forward compatibility. */ | |
1167 | struct nx_action_output_reg { | |
1168 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1169 | ovs_be16 len; /* 24. */ | |
1170 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1171 | ovs_be16 subtype; /* NXAST_OUTPUT_REG. */ | |
29089a54 | 1172 | |
c2d936a4 BP |
1173 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1174 | ovs_be32 src; /* Source. */ | |
29089a54 | 1175 | |
c2d936a4 | 1176 | ovs_be16 max_len; /* Max length to send to controller. */ |
29089a54 | 1177 | |
c2d936a4 BP |
1178 | uint8_t zero[6]; /* Reserved, must be zero. */ |
1179 | }; | |
1180 | OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24); | |
29089a54 | 1181 | |
bad8a439 BP |
1182 | /* Action structure for NXAST_OUTPUT_REG2. |
1183 | * | |
1184 | * Like the NXAST_OUTPUT_REG but organized so that there is room for a 64-bit | |
1185 | * experimenter OXM as 'src'. | |
1186 | */ | |
1187 | struct nx_action_output_reg2 { | |
1188 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1189 | ovs_be16 len; /* 24. */ | |
1190 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1191 | ovs_be16 subtype; /* NXAST_OUTPUT_REG2. */ | |
1192 | ||
1193 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
1194 | ovs_be16 max_len; /* Max length to send to controller. */ | |
1195 | ||
1196 | /* Followed by: | |
1197 | * - 'src', as an OXM/NXM header (either 4 or 8 bytes). | |
1198 | * - Enough 0-bytes to pad the action out to 24 bytes. */ | |
1199 | uint8_t pad[10]; | |
1200 | }; | |
1201 | OFP_ASSERT(sizeof(struct nx_action_output_reg2) == 24); | |
1202 | ||
a7a2d006 | 1203 | static enum ofperr |
c2d936a4 | 1204 | decode_NXAST_RAW_OUTPUT_REG(const struct nx_action_output_reg *naor, |
f3cd3ac7 | 1205 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1206 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1207 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
a7a2d006 | 1208 | { |
c2d936a4 | 1209 | struct ofpact_output_reg *output_reg; |
5c7c16d8 | 1210 | enum ofperr error; |
a7a2d006 | 1211 | |
c2d936a4 | 1212 | if (!is_all_zeros(naor->zero, sizeof naor->zero)) { |
a7a2d006 JS |
1213 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1214 | } | |
a7a2d006 | 1215 | |
c2d936a4 | 1216 | output_reg = ofpact_put_OUTPUT_REG(out); |
bad8a439 | 1217 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG; |
c2d936a4 BP |
1218 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); |
1219 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1220 | output_reg->max_len = ntohs(naor->max_len); | |
5c7c16d8 YHW |
1221 | error = mf_vl_mff_mf_from_nxm_header(ntohl(naor->src), vl_mff_map, |
1222 | &output_reg->src.field, tlv_bitmap); | |
1223 | if (error) { | |
1224 | return error; | |
04f48a68 YHW |
1225 | } |
1226 | ||
c2d936a4 | 1227 | return mf_check_src(&output_reg->src, NULL); |
a7a2d006 JS |
1228 | } |
1229 | ||
bad8a439 BP |
1230 | static enum ofperr |
1231 | decode_NXAST_RAW_OUTPUT_REG2(const struct nx_action_output_reg2 *naor, | |
f3cd3ac7 | 1232 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1233 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1234 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 BP |
1235 | { |
1236 | struct ofpact_output_reg *output_reg; | |
5c7c16d8 YHW |
1237 | enum ofperr error; |
1238 | ||
bad8a439 BP |
1239 | output_reg = ofpact_put_OUTPUT_REG(out); |
1240 | output_reg->ofpact.raw = NXAST_RAW_OUTPUT_REG2; | |
1241 | output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits); | |
1242 | output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits); | |
1243 | output_reg->max_len = ntohs(naor->max_len); | |
1244 | ||
0a2869d5 | 1245 | struct ofpbuf b = ofpbuf_const_initializer(naor, ntohs(naor->len)); |
bad8a439 | 1246 | ofpbuf_pull(&b, OBJECT_OFFSETOF(naor, pad)); |
0a2869d5 | 1247 | |
5c7c16d8 YHW |
1248 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &output_reg->src.field, |
1249 | NULL, tlv_bitmap); | |
bad8a439 BP |
1250 | if (error) { |
1251 | return error; | |
1252 | } | |
5c7c16d8 | 1253 | |
6fd6ed71 | 1254 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
1255 | return OFPERR_NXBRC_MUST_BE_ZERO; |
1256 | } | |
1257 | ||
1258 | return mf_check_src(&output_reg->src, NULL); | |
1259 | } | |
1260 | ||
c2d936a4 BP |
1261 | static void |
1262 | encode_OUTPUT_REG(const struct ofpact_output_reg *output_reg, | |
1263 | enum ofp_version ofp_version OVS_UNUSED, | |
1264 | struct ofpbuf *out) | |
f25d0cf3 | 1265 | { |
bad8a439 BP |
1266 | /* If 'output_reg' came in as an NXAST_RAW_OUTPUT_REG2 action, or if it |
1267 | * cannot be encoded in the older form, encode it as | |
1268 | * NXAST_RAW_OUTPUT_REG2. */ | |
1269 | if (output_reg->ofpact.raw == NXAST_RAW_OUTPUT_REG2 | |
1270 | || !mf_nxm_header(output_reg->src.field->id)) { | |
1271 | struct nx_action_output_reg2 *naor = put_NXAST_OUTPUT_REG2(out); | |
6fd6ed71 | 1272 | size_t size = out->size; |
bad8a439 BP |
1273 | |
1274 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, | |
1275 | output_reg->src.n_bits); | |
1276 | naor->max_len = htons(output_reg->max_len); | |
1277 | ||
6fd6ed71 | 1278 | out->size = size - sizeof naor->pad; |
04f48a68 | 1279 | nx_put_mff_header(out, output_reg->src.field, 0, false); |
6fd6ed71 | 1280 | out->size = size; |
bad8a439 BP |
1281 | } else { |
1282 | struct nx_action_output_reg *naor = put_NXAST_OUTPUT_REG(out); | |
f25d0cf3 | 1283 | |
bad8a439 BP |
1284 | naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs, |
1285 | output_reg->src.n_bits); | |
04f48a68 | 1286 | naor->src = htonl(nxm_header_from_mff(output_reg->src.field)); |
bad8a439 BP |
1287 | naor->max_len = htons(output_reg->max_len); |
1288 | } | |
f25d0cf3 BP |
1289 | } |
1290 | ||
cab50449 | 1291 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1292 | parse_OUTPUT_REG(const char *arg, const struct ofpact_parse_params *pp) |
f25d0cf3 | 1293 | { |
efefbcae | 1294 | return parse_OUTPUT(arg, pp); |
f25d0cf3 BP |
1295 | } |
1296 | ||
c2d936a4 | 1297 | static void |
50f96b10 | 1298 | format_OUTPUT_REG(const struct ofpact_output_reg *a, |
efefbcae | 1299 | const struct ofpact_format_params *fp) |
f25d0cf3 | 1300 | { |
efefbcae BP |
1301 | ds_put_format(fp->s, "%soutput:%s", colors.special, colors.end); |
1302 | mf_format_subfield(&a->src, fp->s); | |
c2d936a4 | 1303 | } |
ae6f7530 BP |
1304 | |
1305 | static enum ofperr | |
1306 | check_OUTPUT_REG(const struct ofpact_output_reg *a, | |
1307 | const struct ofpact_check_params *cp) | |
1308 | { | |
1309 | return mf_check_src(&a->src, cp->match); | |
1310 | } | |
c2d936a4 BP |
1311 | \f |
1312 | /* Action structure for NXAST_BUNDLE and NXAST_BUNDLE_LOAD. | |
1313 | * | |
1314 | * The bundle actions choose a slave from a supplied list of options. | |
1315 | * NXAST_BUNDLE outputs to its selection. NXAST_BUNDLE_LOAD writes its | |
1316 | * selection to a register. | |
1317 | * | |
1318 | * The list of possible slaves follows the nx_action_bundle structure. The size | |
1319 | * of each slave is governed by its type as indicated by the 'slave_type' | |
1320 | * parameter. The list of slaves should be padded at its end with zeros to make | |
1321 | * the total length of the action a multiple of 8. | |
1322 | * | |
1323 | * Switches infer from the 'slave_type' parameter the size of each slave. All | |
1324 | * implementations must support the NXM_OF_IN_PORT 'slave_type' which indicates | |
1325 | * that the slaves are OpenFlow port numbers with NXM_LENGTH(NXM_OF_IN_PORT) == | |
1326 | * 2 byte width. Switches should reject actions which indicate unknown or | |
1327 | * unsupported slave types. | |
1328 | * | |
1329 | * Switches use a strategy dictated by the 'algorithm' parameter to choose a | |
1330 | * slave. If the switch does not support the specified 'algorithm' parameter, | |
1331 | * it should reject the action. | |
1332 | * | |
1333 | * Several algorithms take into account liveness when selecting slaves. The | |
1334 | * liveness of a slave is implementation defined (with one exception), but will | |
1335 | * generally take into account things like its carrier status and the results | |
1336 | * of any link monitoring protocols which happen to be running on it. In order | |
1337 | * to give controllers a place-holder value, the OFPP_NONE port is always | |
63460a30 TLSC |
1338 | * considered live, that is, NXAST_BUNDLE_LOAD stores OFPP_NONE in the output |
1339 | * register if no slave is live. | |
c2d936a4 BP |
1340 | * |
1341 | * Some slave selection strategies require the use of a hash function, in which | |
1342 | * case the 'fields' and 'basis' parameters should be populated. The 'fields' | |
1343 | * parameter (one of NX_HASH_FIELDS_*) designates which parts of the flow to | |
1344 | * hash. Refer to the definition of "enum nx_hash_fields" for details. The | |
1345 | * 'basis' parameter is used as a universal hash parameter. Different values | |
1346 | * of 'basis' yield different hash results. | |
1347 | * | |
1348 | * The 'zero' parameter at the end of the action structure is reserved for | |
1349 | * future use. Switches are required to reject actions which have nonzero | |
1350 | * bytes in the 'zero' field. | |
1351 | * | |
1352 | * NXAST_BUNDLE actions should have 'ofs_nbits' and 'dst' zeroed. Switches | |
1353 | * should reject actions which have nonzero bytes in either of these fields. | |
1354 | * | |
1355 | * NXAST_BUNDLE_LOAD stores the OpenFlow port number of the selected slave in | |
1356 | * dst[ofs:ofs+n_bits]. The format and semantics of 'dst' and 'ofs_nbits' are | |
1357 | * similar to those for the NXAST_REG_LOAD action. */ | |
1358 | struct nx_action_bundle { | |
1359 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
1360 | ovs_be16 len; /* Length including slaves. */ | |
1361 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
1362 | ovs_be16 subtype; /* NXAST_BUNDLE or NXAST_BUNDLE_LOAD. */ | |
f25d0cf3 | 1363 | |
c2d936a4 BP |
1364 | /* Slave choice algorithm to apply to hash value. */ |
1365 | ovs_be16 algorithm; /* One of NX_BD_ALG_*. */ | |
4cceacb9 | 1366 | |
c2d936a4 BP |
1367 | /* What fields to hash and how. */ |
1368 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
1369 | ovs_be16 basis; /* Universal hash parameter. */ | |
f25d0cf3 | 1370 | |
c2d936a4 BP |
1371 | ovs_be32 slave_type; /* NXM_OF_IN_PORT. */ |
1372 | ovs_be16 n_slaves; /* Number of slaves. */ | |
f25d0cf3 | 1373 | |
c2d936a4 BP |
1374 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ |
1375 | ovs_be32 dst; /* Destination. */ | |
f25d0cf3 | 1376 | |
c2d936a4 BP |
1377 | uint8_t zero[4]; /* Reserved. Must be zero. */ |
1378 | }; | |
1379 | OFP_ASSERT(sizeof(struct nx_action_bundle) == 32); | |
f25d0cf3 | 1380 | |
c2d936a4 BP |
1381 | static enum ofperr |
1382 | decode_bundle(bool load, const struct nx_action_bundle *nab, | |
5c7c16d8 YHW |
1383 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
1384 | struct ofpbuf *ofpacts) | |
c2d936a4 | 1385 | { |
7ed58d4a | 1386 | static struct vlog_rate_limit rll = VLOG_RATE_LIMIT_INIT(1, 5); |
c2d936a4 BP |
1387 | struct ofpact_bundle *bundle; |
1388 | uint32_t slave_type; | |
1389 | size_t slaves_size, i; | |
1390 | enum ofperr error; | |
bd85dac1 | 1391 | |
c2d936a4 BP |
1392 | bundle = ofpact_put_BUNDLE(ofpacts); |
1393 | ||
1394 | bundle->n_slaves = ntohs(nab->n_slaves); | |
1395 | bundle->basis = ntohs(nab->basis); | |
1396 | bundle->fields = ntohs(nab->fields); | |
1397 | bundle->algorithm = ntohs(nab->algorithm); | |
1398 | slave_type = ntohl(nab->slave_type); | |
1399 | slaves_size = ntohs(nab->len) - sizeof *nab; | |
1400 | ||
1401 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1402 | if (!flow_hash_fields_valid(bundle->fields)) { | |
7ed58d4a | 1403 | VLOG_WARN_RL(&rll, "unsupported fields %d", (int) bundle->fields); |
c2d936a4 | 1404 | } else if (bundle->n_slaves > BUNDLE_MAX_SLAVES) { |
7ed58d4a | 1405 | VLOG_WARN_RL(&rll, "too many slaves"); |
c2d936a4 BP |
1406 | } else if (bundle->algorithm != NX_BD_ALG_HRW |
1407 | && bundle->algorithm != NX_BD_ALG_ACTIVE_BACKUP) { | |
7ed58d4a | 1408 | VLOG_WARN_RL(&rll, "unsupported algorithm %d", (int) bundle->algorithm); |
508a9338 | 1409 | } else if (slave_type != mf_nxm_header(MFF_IN_PORT)) { |
7ed58d4a | 1410 | VLOG_WARN_RL(&rll, "unsupported slave type %"PRIu32, slave_type); |
c2d936a4 BP |
1411 | } else { |
1412 | error = 0; | |
1413 | } | |
bd85dac1 | 1414 | |
c2d936a4 | 1415 | if (!is_all_zeros(nab->zero, sizeof nab->zero)) { |
7ed58d4a | 1416 | VLOG_WARN_RL(&rll, "reserved field is nonzero"); |
c2d936a4 BP |
1417 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1418 | } | |
f25d0cf3 | 1419 | |
c2d936a4 | 1420 | if (load) { |
c2d936a4 BP |
1421 | bundle->dst.ofs = nxm_decode_ofs(nab->ofs_nbits); |
1422 | bundle->dst.n_bits = nxm_decode_n_bits(nab->ofs_nbits); | |
5c7c16d8 YHW |
1423 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nab->dst), vl_mff_map, |
1424 | &bundle->dst.field, tlv_bitmap); | |
1425 | if (error) { | |
1426 | return error; | |
04f48a68 | 1427 | } |
f25d0cf3 | 1428 | |
c2d936a4 | 1429 | if (bundle->dst.n_bits < 16) { |
7ed58d4a | 1430 | VLOG_WARN_RL(&rll, "bundle_load action requires at least 16 bit " |
c2d936a4 BP |
1431 | "destination."); |
1432 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
1433 | } | |
1434 | } else { | |
1435 | if (nab->ofs_nbits || nab->dst) { | |
7ed58d4a | 1436 | VLOG_WARN_RL(&rll, "bundle action has nonzero reserved fields"); |
c2d936a4 BP |
1437 | error = OFPERR_OFPBAC_BAD_ARGUMENT; |
1438 | } | |
1439 | } | |
f25d0cf3 | 1440 | |
c2d936a4 | 1441 | if (slaves_size < bundle->n_slaves * sizeof(ovs_be16)) { |
7ed58d4a | 1442 | VLOG_WARN_RL(&rll, "Nicira action %s only has %"PRIuSIZE" bytes " |
c2d936a4 | 1443 | "allocated for slaves. %"PRIuSIZE" bytes are required " |
fd13c6b5 | 1444 | "for %u slaves.", |
c2d936a4 BP |
1445 | load ? "bundle_load" : "bundle", slaves_size, |
1446 | bundle->n_slaves * sizeof(ovs_be16), bundle->n_slaves); | |
1447 | error = OFPERR_OFPBAC_BAD_LEN; | |
5026a263 BP |
1448 | } else { |
1449 | for (i = 0; i < bundle->n_slaves; i++) { | |
1450 | ofp_port_t ofp_port | |
1451 | = u16_to_ofp(ntohs(((ovs_be16 *)(nab + 1))[i])); | |
1452 | ofpbuf_put(ofpacts, &ofp_port, sizeof ofp_port); | |
1453 | bundle = ofpacts->header; | |
1454 | } | |
c2d936a4 | 1455 | } |
f25d0cf3 | 1456 | |
ce058104 | 1457 | ofpact_finish_BUNDLE(ofpacts, &bundle); |
c2d936a4 BP |
1458 | if (!error) { |
1459 | error = bundle_check(bundle, OFPP_MAX, NULL); | |
1460 | } | |
1461 | return error; | |
1462 | } | |
f25d0cf3 | 1463 | |
c2d936a4 | 1464 | static enum ofperr |
f3cd3ac7 JS |
1465 | decode_NXAST_RAW_BUNDLE(const struct nx_action_bundle *nab, |
1466 | enum ofp_version ofp_version OVS_UNUSED, | |
1467 | struct ofpbuf *out) | |
c2d936a4 | 1468 | { |
5c7c16d8 | 1469 | return decode_bundle(false, nab, NULL, NULL, out); |
c2d936a4 | 1470 | } |
f25d0cf3 | 1471 | |
c2d936a4 BP |
1472 | static enum ofperr |
1473 | decode_NXAST_RAW_BUNDLE_LOAD(const struct nx_action_bundle *nab, | |
f3cd3ac7 | 1474 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 1475 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 1476 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 | 1477 | { |
5c7c16d8 | 1478 | return decode_bundle(true, nab, vl_mff_map, tlv_bitmap, out); |
c2d936a4 | 1479 | } |
c2d967a5 | 1480 | |
c2d936a4 BP |
1481 | static void |
1482 | encode_BUNDLE(const struct ofpact_bundle *bundle, | |
1483 | enum ofp_version ofp_version OVS_UNUSED, | |
1484 | struct ofpbuf *out) | |
1485 | { | |
1486 | int slaves_len = ROUND_UP(2 * bundle->n_slaves, OFP_ACTION_ALIGN); | |
1487 | struct nx_action_bundle *nab; | |
1488 | ovs_be16 *slaves; | |
1489 | size_t i; | |
f25d0cf3 | 1490 | |
c2d936a4 BP |
1491 | nab = (bundle->dst.field |
1492 | ? put_NXAST_BUNDLE_LOAD(out) | |
1493 | : put_NXAST_BUNDLE(out)); | |
1494 | nab->len = htons(ntohs(nab->len) + slaves_len); | |
1495 | nab->algorithm = htons(bundle->algorithm); | |
1496 | nab->fields = htons(bundle->fields); | |
1497 | nab->basis = htons(bundle->basis); | |
508a9338 | 1498 | nab->slave_type = htonl(mf_nxm_header(MFF_IN_PORT)); |
c2d936a4 BP |
1499 | nab->n_slaves = htons(bundle->n_slaves); |
1500 | if (bundle->dst.field) { | |
1501 | nab->ofs_nbits = nxm_encode_ofs_nbits(bundle->dst.ofs, | |
1502 | bundle->dst.n_bits); | |
04f48a68 | 1503 | nab->dst = htonl(nxm_header_from_mff(bundle->dst.field)); |
c2d936a4 | 1504 | } |
f25d0cf3 | 1505 | |
c2d936a4 BP |
1506 | slaves = ofpbuf_put_zeros(out, slaves_len); |
1507 | for (i = 0; i < bundle->n_slaves; i++) { | |
1508 | slaves[i] = htons(ofp_to_u16(bundle->slaves[i])); | |
1509 | } | |
1510 | } | |
b02475c5 | 1511 | |
cab50449 | 1512 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1513 | parse_BUNDLE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1514 | { |
efefbcae | 1515 | return bundle_parse(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1516 | } |
b02475c5 | 1517 | |
cab50449 | 1518 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1519 | parse_bundle_load(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1520 | { |
efefbcae | 1521 | return bundle_parse_load(arg, pp->port_map, pp->ofpacts); |
c2d936a4 | 1522 | } |
097d4939 | 1523 | |
c2d936a4 | 1524 | static void |
50f96b10 | 1525 | format_BUNDLE(const struct ofpact_bundle *a, |
efefbcae | 1526 | const struct ofpact_format_params *fp) |
c2d936a4 | 1527 | { |
efefbcae | 1528 | bundle_format(a, fp->port_map, fp->s); |
c2d936a4 | 1529 | } |
ae6f7530 BP |
1530 | |
1531 | static enum ofperr | |
1532 | check_BUNDLE(const struct ofpact_bundle *a, | |
1533 | const struct ofpact_check_params *cp) | |
1534 | { | |
1535 | return bundle_check(a, cp->max_ports, cp->match); | |
1536 | } | |
c2d936a4 BP |
1537 | \f |
1538 | /* Set VLAN actions. */ | |
097d4939 | 1539 | |
c2d936a4 BP |
1540 | static enum ofperr |
1541 | decode_set_vlan_vid(uint16_t vid, bool push_vlan_if_needed, struct ofpbuf *out) | |
1542 | { | |
1543 | if (vid & ~0xfff) { | |
1544 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1545 | } else { | |
1546 | struct ofpact_vlan_vid *vlan_vid = ofpact_put_SET_VLAN_VID(out); | |
1547 | vlan_vid->vlan_vid = vid; | |
1548 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1549 | return 0; | |
1550 | } | |
1551 | } | |
0f3f3c3d | 1552 | |
c2d936a4 | 1553 | static enum ofperr |
f3cd3ac7 JS |
1554 | decode_OFPAT_RAW10_SET_VLAN_VID(uint16_t vid, |
1555 | enum ofp_version ofp_version OVS_UNUSED, | |
1556 | struct ofpbuf *out) | |
c2d936a4 BP |
1557 | { |
1558 | return decode_set_vlan_vid(vid, true, out); | |
1559 | } | |
b676167a | 1560 | |
c2d936a4 | 1561 | static enum ofperr |
f3cd3ac7 JS |
1562 | decode_OFPAT_RAW11_SET_VLAN_VID(uint16_t vid, |
1563 | enum ofp_version ofp_version OVS_UNUSED, | |
1564 | struct ofpbuf *out) | |
c2d936a4 BP |
1565 | { |
1566 | return decode_set_vlan_vid(vid, false, out); | |
1567 | } | |
29089a54 | 1568 | |
c2d936a4 BP |
1569 | static void |
1570 | encode_SET_VLAN_VID(const struct ofpact_vlan_vid *vlan_vid, | |
1571 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1572 | { | |
1573 | uint16_t vid = vlan_vid->vlan_vid; | |
1574 | ||
1575 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1576 | * for such a feature. */ | |
1577 | if (ofp_version > OFP10_VERSION | |
1578 | && vlan_vid->push_vlan_if_needed | |
1579 | && !vlan_vid->flow_has_vlan) { | |
1580 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
f25d0cf3 BP |
1581 | } |
1582 | ||
c2d936a4 BP |
1583 | if (ofp_version == OFP10_VERSION) { |
1584 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
1585 | } else if (ofp_version == OFP11_VERSION) { | |
1586 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
1587 | } else { | |
128684a6 | 1588 | put_set_field(out, ofp_version, MFF_VLAN_VID, vid | OFPVID12_PRESENT); |
c2d936a4 | 1589 | } |
f25d0cf3 BP |
1590 | } |
1591 | ||
cab50449 | 1592 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1593 | parse_set_vlan_vid(char *arg, bool push_vlan_if_needed, |
1594 | const struct ofpact_parse_params *pp) | |
d01c980f | 1595 | { |
ca287d20 | 1596 | struct ofpact_vlan_vid *vlan_vid; |
c2d936a4 BP |
1597 | uint16_t vid; |
1598 | char *error; | |
d01c980f | 1599 | |
c2d936a4 | 1600 | error = str_to_u16(arg, "VLAN VID", &vid); |
d01c980f BP |
1601 | if (error) { |
1602 | return error; | |
1603 | } | |
1604 | ||
c2d936a4 BP |
1605 | if (vid & ~VLAN_VID_MASK) { |
1606 | return xasprintf("%s: not a valid VLAN VID", arg); | |
d01c980f | 1607 | } |
efefbcae | 1608 | vlan_vid = ofpact_put_SET_VLAN_VID(pp->ofpacts); |
c2d936a4 BP |
1609 | vlan_vid->vlan_vid = vid; |
1610 | vlan_vid->push_vlan_if_needed = push_vlan_if_needed; | |
1611 | return NULL; | |
1612 | } | |
d01c980f | 1613 | |
cab50449 | 1614 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1615 | parse_SET_VLAN_VID(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1616 | { |
efefbcae | 1617 | return parse_set_vlan_vid(arg, false, pp); |
d01c980f BP |
1618 | } |
1619 | ||
c2d936a4 | 1620 | static void |
50f96b10 | 1621 | format_SET_VLAN_VID(const struct ofpact_vlan_vid *a, |
efefbcae | 1622 | const struct ofpact_format_params *fp) |
c2d936a4 | 1623 | { |
efefbcae | 1624 | ds_put_format(fp->s, "%s%s:%s%"PRIu16, colors.param, |
c2d936a4 | 1625 | a->push_vlan_if_needed ? "mod_vlan_vid" : "set_vlan_vid", |
b1c5bf1f | 1626 | colors.end, a->vlan_vid); |
c2d936a4 | 1627 | } |
ae6f7530 BP |
1628 | |
1629 | static enum ofperr | |
1630 | check_SET_VLAN_VID(struct ofpact_vlan_vid *a, struct ofpact_check_params *cp) | |
1631 | { | |
1632 | /* Remember if we saw a vlan tag in the flow to aid translating to OpenFlow | |
1633 | * 1.1+ if need be. */ | |
1634 | ovs_be16 *tci = &cp->match->flow.vlans[0].tci; | |
1635 | a->flow_has_vlan = (*tci & htons(VLAN_CFI)) != 0; | |
1636 | if (!a->flow_has_vlan && !a->push_vlan_if_needed) { | |
1637 | inconsistent_match(&cp->usable_protocols); | |
1638 | } | |
1639 | ||
1640 | /* Temporarily mark that we have a vlan tag. */ | |
1641 | *tci |= htons(VLAN_CFI); | |
1642 | ||
1643 | return 0; | |
1644 | } | |
c2d936a4 BP |
1645 | \f |
1646 | /* Set PCP actions. */ | |
e3f8f887 | 1647 | |
c2d936a4 BP |
1648 | static enum ofperr |
1649 | decode_set_vlan_pcp(uint8_t pcp, bool push_vlan_if_needed, struct ofpbuf *out) | |
f25d0cf3 | 1650 | { |
c2d936a4 BP |
1651 | if (pcp & ~7) { |
1652 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
1653 | } else { | |
1654 | struct ofpact_vlan_pcp *vlan_pcp = ofpact_put_SET_VLAN_PCP(out); | |
1655 | vlan_pcp->vlan_pcp = pcp; | |
1656 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1657 | return 0; | |
1658 | } | |
f25d0cf3 BP |
1659 | } |
1660 | ||
c2d936a4 | 1661 | static enum ofperr |
f3cd3ac7 JS |
1662 | decode_OFPAT_RAW10_SET_VLAN_PCP(uint8_t pcp, |
1663 | enum ofp_version ofp_version OVS_UNUSED, | |
1664 | struct ofpbuf *out) | |
f25d0cf3 | 1665 | { |
c2d936a4 | 1666 | return decode_set_vlan_pcp(pcp, true, out); |
f25d0cf3 BP |
1667 | } |
1668 | ||
c2d936a4 | 1669 | static enum ofperr |
f3cd3ac7 JS |
1670 | decode_OFPAT_RAW11_SET_VLAN_PCP(uint8_t pcp, |
1671 | enum ofp_version ofp_version OVS_UNUSED, | |
1672 | struct ofpbuf *out) | |
c2d936a4 BP |
1673 | { |
1674 | return decode_set_vlan_pcp(pcp, false, out); | |
1675 | } | |
f25d0cf3 | 1676 | |
699dddf1 | 1677 | static void |
c2d936a4 BP |
1678 | encode_SET_VLAN_PCP(const struct ofpact_vlan_pcp *vlan_pcp, |
1679 | enum ofp_version ofp_version, struct ofpbuf *out) | |
699dddf1 | 1680 | { |
c2d936a4 BP |
1681 | uint8_t pcp = vlan_pcp->vlan_pcp; |
1682 | ||
1683 | /* Push a VLAN tag, if none is present and this form of the action calls | |
1684 | * for such a feature. */ | |
1685 | if (ofp_version > OFP10_VERSION | |
1686 | && vlan_pcp->push_vlan_if_needed | |
1687 | && !vlan_pcp->flow_has_vlan) { | |
1688 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
1689 | } | |
699dddf1 | 1690 | |
c2d936a4 BP |
1691 | if (ofp_version == OFP10_VERSION) { |
1692 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
1693 | } else if (ofp_version == OFP11_VERSION) { | |
1694 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
1695 | } else { | |
128684a6 | 1696 | put_set_field(out, ofp_version, MFF_VLAN_PCP, pcp); |
699dddf1 BP |
1697 | } |
1698 | } | |
1699 | ||
cab50449 | 1700 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
1701 | parse_set_vlan_pcp(char *arg, bool push_vlan_if_needed, |
1702 | const struct ofpact_parse_params *pp) | |
f25d0cf3 | 1703 | { |
c2d936a4 BP |
1704 | struct ofpact_vlan_pcp *vlan_pcp; |
1705 | uint8_t pcp; | |
1706 | char *error; | |
e3f8f887 | 1707 | |
c2d936a4 BP |
1708 | error = str_to_u8(arg, "VLAN PCP", &pcp); |
1709 | if (error) { | |
699dddf1 | 1710 | return error; |
f25d0cf3 BP |
1711 | } |
1712 | ||
c2d936a4 BP |
1713 | if (pcp & ~7) { |
1714 | return xasprintf("%s: not a valid VLAN PCP", arg); | |
1715 | } | |
efefbcae | 1716 | vlan_pcp = ofpact_put_SET_VLAN_PCP(pp->ofpacts); |
c2d936a4 BP |
1717 | vlan_pcp->vlan_pcp = pcp; |
1718 | vlan_pcp->push_vlan_if_needed = push_vlan_if_needed; | |
1719 | return NULL; | |
1720 | } | |
1721 | ||
cab50449 | 1722 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1723 | parse_SET_VLAN_PCP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1724 | { |
efefbcae | 1725 | return parse_set_vlan_pcp(arg, false, pp); |
c2d936a4 BP |
1726 | } |
1727 | ||
1728 | static void | |
50f96b10 | 1729 | format_SET_VLAN_PCP(const struct ofpact_vlan_pcp *a, |
efefbcae | 1730 | const struct ofpact_format_params *fp) |
c2d936a4 | 1731 | { |
efefbcae | 1732 | ds_put_format(fp->s, "%s%s:%s%"PRIu8, colors.param, |
c2d936a4 | 1733 | a->push_vlan_if_needed ? "mod_vlan_pcp" : "set_vlan_pcp", |
b1c5bf1f | 1734 | colors.end, a->vlan_pcp); |
c2d936a4 | 1735 | } |
ae6f7530 BP |
1736 | |
1737 | static enum ofperr | |
1738 | check_SET_VLAN_PCP(struct ofpact_vlan_pcp *a, struct ofpact_check_params *cp) | |
1739 | { | |
1740 | /* Remember if we saw a vlan tag in the flow to aid translating to OpenFlow | |
1741 | * 1.1+ if need be. */ | |
1742 | ovs_be16 *tci = &cp->match->flow.vlans[0].tci; | |
1743 | a->flow_has_vlan = (*tci & htons(VLAN_CFI)) != 0; | |
1744 | if (!a->flow_has_vlan && !a->push_vlan_if_needed) { | |
1745 | inconsistent_match(&cp->usable_protocols); | |
1746 | } | |
1747 | ||
1748 | /* Temporarily mark that we have a vlan tag. */ | |
1749 | *tci |= htons(VLAN_CFI); | |
1750 | ||
1751 | return 0; | |
1752 | } | |
c2d936a4 BP |
1753 | \f |
1754 | /* Strip VLAN actions. */ | |
1755 | ||
1756 | static enum ofperr | |
1757 | decode_OFPAT_RAW10_STRIP_VLAN(struct ofpbuf *out) | |
1758 | { | |
1759 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; | |
f25d0cf3 BP |
1760 | return 0; |
1761 | } | |
1762 | ||
8f2cded4 | 1763 | static enum ofperr |
c2d936a4 | 1764 | decode_OFPAT_RAW11_POP_VLAN(struct ofpbuf *out) |
8f2cded4 | 1765 | { |
c2d936a4 BP |
1766 | ofpact_put_STRIP_VLAN(out)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
1767 | return 0; | |
1768 | } | |
f25d0cf3 | 1769 | |
c2d936a4 BP |
1770 | static void |
1771 | encode_STRIP_VLAN(const struct ofpact_null *null OVS_UNUSED, | |
1772 | enum ofp_version ofp_version, struct ofpbuf *out) | |
1773 | { | |
1774 | if (ofp_version == OFP10_VERSION) { | |
1775 | put_OFPAT10_STRIP_VLAN(out); | |
1776 | } else { | |
1777 | put_OFPAT11_POP_VLAN(out); | |
1778 | } | |
1779 | } | |
f25d0cf3 | 1780 | |
cab50449 | 1781 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1782 | parse_STRIP_VLAN(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 1783 | { |
efefbcae | 1784 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW10_STRIP_VLAN; |
c2d936a4 BP |
1785 | return NULL; |
1786 | } | |
1787 | ||
cab50449 | 1788 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1789 | parse_pop_vlan(const struct ofpact_parse_params *pp) |
c2d936a4 | 1790 | { |
efefbcae | 1791 | ofpact_put_STRIP_VLAN(pp->ofpacts)->ofpact.raw = OFPAT_RAW11_POP_VLAN; |
c2d936a4 BP |
1792 | return NULL; |
1793 | } | |
1794 | ||
1795 | static void | |
50f96b10 | 1796 | format_STRIP_VLAN(const struct ofpact_null *a, |
efefbcae | 1797 | const struct ofpact_format_params *fp) |
c2d936a4 | 1798 | { |
efefbcae | 1799 | ds_put_format(fp->s, (a->ofpact.raw == OFPAT_RAW11_POP_VLAN |
b1c5bf1f QM |
1800 | ? "%spop_vlan%s" |
1801 | : "%sstrip_vlan%s"), | |
1802 | colors.value, colors.end); | |
c2d936a4 | 1803 | } |
ae6f7530 BP |
1804 | |
1805 | static enum ofperr | |
1806 | check_STRIP_VLAN(const struct ofpact_null *a OVS_UNUSED, | |
1807 | struct ofpact_check_params *cp) | |
1808 | { | |
1809 | if (!(cp->match->flow.vlans[0].tci & htons(VLAN_CFI))) { | |
1810 | inconsistent_match(&cp->usable_protocols); | |
1811 | } | |
1812 | flow_pop_vlan(&cp->match->flow, NULL); | |
1813 | return 0; | |
1814 | } | |
c2d936a4 BP |
1815 | \f |
1816 | /* Push VLAN action. */ | |
1817 | ||
1818 | static enum ofperr | |
f3cd3ac7 JS |
1819 | decode_OFPAT_RAW11_PUSH_VLAN(ovs_be16 eth_type, |
1820 | enum ofp_version ofp_version OVS_UNUSED, | |
1821 | struct ofpbuf *out) | |
c2d936a4 | 1822 | { |
f0fb825a EG |
1823 | struct ofpact_push_vlan *push_vlan; |
1824 | if (!eth_type_vlan(eth_type)) { | |
c2d936a4 | 1825 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
f25d0cf3 | 1826 | } |
f0fb825a EG |
1827 | push_vlan = ofpact_put_PUSH_VLAN(out); |
1828 | push_vlan->ethertype = eth_type; | |
c2d936a4 BP |
1829 | return 0; |
1830 | } | |
f25d0cf3 | 1831 | |
c2d936a4 | 1832 | static void |
f0fb825a | 1833 | encode_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
c2d936a4 BP |
1834 | enum ofp_version ofp_version, struct ofpbuf *out) |
1835 | { | |
1836 | if (ofp_version == OFP10_VERSION) { | |
1837 | /* PUSH is a side effect of a SET_VLAN_VID/PCP, which should | |
1838 | * follow this action. */ | |
1839 | } else { | |
f0fb825a | 1840 | put_OFPAT11_PUSH_VLAN(out, push_vlan->ethertype); |
f25d0cf3 | 1841 | } |
c2d936a4 | 1842 | } |
f25d0cf3 | 1843 | |
cab50449 | 1844 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1845 | parse_PUSH_VLAN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1846 | { |
f0fb825a | 1847 | struct ofpact_push_vlan *push_vlan; |
c2d936a4 BP |
1848 | uint16_t ethertype; |
1849 | char *error; | |
1850 | ||
efefbcae | 1851 | *pp->usable_protocols &= OFPUTIL_P_OF11_UP; |
c2d936a4 | 1852 | error = str_to_u16(arg, "ethertype", ðertype); |
4cceacb9 | 1853 | if (error) { |
4cceacb9 JS |
1854 | return error; |
1855 | } | |
1856 | ||
f0fb825a | 1857 | if (!eth_type_vlan(htons(ethertype))) { |
c2d936a4 | 1858 | return xasprintf("%s: not a valid VLAN ethertype", arg); |
f25d0cf3 | 1859 | } |
efefbcae | 1860 | push_vlan = ofpact_put_PUSH_VLAN(pp->ofpacts); |
f0fb825a | 1861 | push_vlan->ethertype = htons(ethertype); |
c2d936a4 | 1862 | return NULL; |
d01c980f BP |
1863 | } |
1864 | ||
c2d936a4 | 1865 | static void |
50f96b10 | 1866 | format_PUSH_VLAN(const struct ofpact_push_vlan *push_vlan, |
efefbcae | 1867 | const struct ofpact_format_params *fp) |
8f2cded4 | 1868 | { |
efefbcae | 1869 | ds_put_format(fp->s, "%spush_vlan:%s%#"PRIx16, |
f0fb825a | 1870 | colors.param, colors.end, ntohs(push_vlan->ethertype)); |
8f2cded4 | 1871 | } |
ae6f7530 BP |
1872 | |
1873 | static enum ofperr | |
1874 | check_PUSH_VLAN(const struct ofpact_push_vlan *a OVS_UNUSED, | |
1875 | struct ofpact_check_params *cp) | |
1876 | { | |
1877 | struct flow *flow = &cp->match->flow; | |
1878 | if (flow->vlans[FLOW_MAX_VLAN_HEADERS - 1].tci & htons(VLAN_CFI)) { | |
1879 | /* Support maximum (FLOW_MAX_VLAN_HEADERS) VLAN headers. */ | |
1880 | return OFPERR_OFPBAC_BAD_TAG; | |
1881 | } | |
1882 | /* Temporary mark that we have a vlan tag. */ | |
1883 | flow_push_vlan_uninit(flow, NULL); | |
1884 | flow->vlans[0].tci |= htons(VLAN_CFI); | |
1885 | return 0; | |
1886 | } | |
d01c980f | 1887 | \f |
c2d936a4 BP |
1888 | /* Action structure for OFPAT10_SET_DL_SRC/DST and OFPAT11_SET_DL_SRC/DST. */ |
1889 | struct ofp_action_dl_addr { | |
1890 | ovs_be16 type; /* Type. */ | |
1891 | ovs_be16 len; /* Length is 16. */ | |
74ff3298 | 1892 | struct eth_addr dl_addr; /* Ethernet address. */ |
c2d936a4 BP |
1893 | uint8_t pad[6]; |
1894 | }; | |
1895 | OFP_ASSERT(sizeof(struct ofp_action_dl_addr) == 16); | |
d01c980f | 1896 | |
d01c980f | 1897 | static enum ofperr |
c2d936a4 | 1898 | decode_OFPAT_RAW_SET_DL_SRC(const struct ofp_action_dl_addr *a, |
f3cd3ac7 | 1899 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 1900 | struct ofpbuf *out) |
d01c980f | 1901 | { |
74ff3298 | 1902 | ofpact_put_SET_ETH_SRC(out)->mac = a->dl_addr; |
c2d936a4 BP |
1903 | return 0; |
1904 | } | |
3ddcaf2d | 1905 | |
c2d936a4 BP |
1906 | static enum ofperr |
1907 | decode_OFPAT_RAW_SET_DL_DST(const struct ofp_action_dl_addr *a, | |
f3cd3ac7 | 1908 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
1909 | struct ofpbuf *out) |
1910 | { | |
74ff3298 | 1911 | ofpact_put_SET_ETH_DST(out)->mac = a->dl_addr; |
c2d936a4 BP |
1912 | return 0; |
1913 | } | |
d01c980f | 1914 | |
c2d936a4 BP |
1915 | static void |
1916 | encode_SET_ETH_addr(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1917 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
1918 | struct ofpbuf *out) | |
1919 | { | |
c2d936a4 BP |
1920 | if (ofp_version < OFP12_VERSION) { |
1921 | struct ofp_action_dl_addr *oada; | |
1922 | ||
1923 | oada = ofpact_put_raw(out, ofp_version, raw, 0); | |
74ff3298 | 1924 | oada->dl_addr = mac->mac; |
c2d936a4 | 1925 | } else { |
128684a6 | 1926 | put_set_field(out, ofp_version, field, eth_addr_to_uint64(mac->mac)); |
d01c980f BP |
1927 | } |
1928 | } | |
1929 | ||
c2d936a4 BP |
1930 | static void |
1931 | encode_SET_ETH_SRC(const struct ofpact_mac *mac, enum ofp_version ofp_version, | |
1932 | struct ofpbuf *out) | |
b2dd70be | 1933 | { |
c2d936a4 BP |
1934 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_SRC, MFF_ETH_SRC, |
1935 | out); | |
b2dd70be | 1936 | |
c2d936a4 | 1937 | } |
b2dd70be | 1938 | |
c2d936a4 BP |
1939 | static void |
1940 | encode_SET_ETH_DST(const struct ofpact_mac *mac, | |
1941 | enum ofp_version ofp_version, | |
1942 | struct ofpbuf *out) | |
1943 | { | |
1944 | encode_SET_ETH_addr(mac, ofp_version, OFPAT_RAW_SET_DL_DST, MFF_ETH_DST, | |
1945 | out); | |
b2dd70be | 1946 | |
c2d936a4 | 1947 | } |
b2dd70be | 1948 | |
cab50449 | 1949 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1950 | parse_SET_ETH_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1951 | { |
efefbcae | 1952 | return str_to_mac(arg, &ofpact_put_SET_ETH_SRC(pp->ofpacts)->mac); |
c2d936a4 BP |
1953 | } |
1954 | ||
cab50449 | 1955 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 1956 | parse_SET_ETH_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 1957 | { |
efefbcae | 1958 | return str_to_mac(arg, &ofpact_put_SET_ETH_DST(pp->ofpacts)->mac); |
b2dd70be JR |
1959 | } |
1960 | ||
1961 | static void | |
50f96b10 | 1962 | format_SET_ETH_SRC(const struct ofpact_mac *a, |
efefbcae | 1963 | const struct ofpact_format_params *fp) |
b2dd70be | 1964 | { |
efefbcae | 1965 | ds_put_format(fp->s, "%smod_dl_src:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1966 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 | 1967 | } |
b2dd70be | 1968 | |
c2d936a4 | 1969 | static void |
50f96b10 | 1970 | format_SET_ETH_DST(const struct ofpact_mac *a, |
efefbcae | 1971 | const struct ofpact_format_params *fp) |
c2d936a4 | 1972 | { |
efefbcae | 1973 | ds_put_format(fp->s, "%smod_dl_dst:%s"ETH_ADDR_FMT, |
b1c5bf1f | 1974 | colors.param, colors.end, ETH_ADDR_ARGS(a->mac)); |
c2d936a4 | 1975 | } |
ae6f7530 BP |
1976 | |
1977 | static enum ofperr | |
1978 | check_SET_ETH_SRC(const struct ofpact_mac *a OVS_UNUSED, | |
1979 | const struct ofpact_check_params *cp OVS_UNUSED) | |
1980 | { | |
1981 | return 0; | |
1982 | } | |
1983 | ||
1984 | static enum ofperr | |
1985 | check_SET_ETH_DST(const struct ofpact_mac *a OVS_UNUSED, | |
1986 | const struct ofpact_check_params *cp OVS_UNUSED) | |
1987 | { | |
1988 | return 0; | |
1989 | } | |
c2d936a4 BP |
1990 | \f |
1991 | /* Set IPv4 address actions. */ | |
b2dd70be | 1992 | |
c2d936a4 | 1993 | static enum ofperr |
f3cd3ac7 JS |
1994 | decode_OFPAT_RAW_SET_NW_SRC(ovs_be32 ipv4, |
1995 | enum ofp_version ofp_version OVS_UNUSED, | |
1996 | struct ofpbuf *out) | |
c2d936a4 BP |
1997 | { |
1998 | ofpact_put_SET_IPV4_SRC(out)->ipv4 = ipv4; | |
1999 | return 0; | |
b2dd70be JR |
2000 | } |
2001 | ||
c2d936a4 | 2002 | static enum ofperr |
f3cd3ac7 JS |
2003 | decode_OFPAT_RAW_SET_NW_DST(ovs_be32 ipv4, |
2004 | enum ofp_version ofp_version OVS_UNUSED, | |
2005 | struct ofpbuf *out) | |
b2dd70be | 2006 | { |
c2d936a4 BP |
2007 | ofpact_put_SET_IPV4_DST(out)->ipv4 = ipv4; |
2008 | return 0; | |
2009 | } | |
b2dd70be | 2010 | |
c2d936a4 BP |
2011 | static void |
2012 | encode_SET_IPV4_addr(const struct ofpact_ipv4 *ipv4, | |
2013 | enum ofp_version ofp_version, | |
2014 | enum ofp_raw_action_type raw, enum mf_field_id field, | |
2015 | struct ofpbuf *out) | |
2016 | { | |
2017 | ovs_be32 addr = ipv4->ipv4; | |
2018 | if (ofp_version < OFP12_VERSION) { | |
2019 | ofpact_put_raw(out, ofp_version, raw, ntohl(addr)); | |
b2dd70be | 2020 | } else { |
128684a6 | 2021 | put_set_field(out, ofp_version, field, ntohl(addr)); |
b2dd70be JR |
2022 | } |
2023 | } | |
2024 | ||
a6fd70bb | 2025 | static void |
c2d936a4 BP |
2026 | encode_SET_IPV4_SRC(const struct ofpact_ipv4 *ipv4, |
2027 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 2028 | { |
c2d936a4 BP |
2029 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_SRC, MFF_IPV4_SRC, |
2030 | out); | |
2031 | } | |
a6fd70bb | 2032 | |
c2d936a4 BP |
2033 | static void |
2034 | encode_SET_IPV4_DST(const struct ofpact_ipv4 *ipv4, | |
2035 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2036 | { | |
2037 | encode_SET_IPV4_addr(ipv4, ofp_version, OFPAT_RAW_SET_NW_DST, MFF_IPV4_DST, | |
2038 | out); | |
2039 | } | |
a6fd70bb | 2040 | |
cab50449 | 2041 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2042 | parse_SET_IPV4_SRC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2043 | { |
efefbcae | 2044 | return str_to_ip(arg, &ofpact_put_SET_IPV4_SRC(pp->ofpacts)->ipv4); |
c2d936a4 | 2045 | } |
a6fd70bb | 2046 | |
cab50449 | 2047 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2048 | parse_SET_IPV4_DST(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2049 | { |
efefbcae | 2050 | return str_to_ip(arg, &ofpact_put_SET_IPV4_DST(pp->ofpacts)->ipv4); |
c2d936a4 | 2051 | } |
a6fd70bb | 2052 | |
c2d936a4 | 2053 | static void |
50f96b10 | 2054 | format_SET_IPV4_SRC(const struct ofpact_ipv4 *a, |
efefbcae | 2055 | const struct ofpact_format_params *fp) |
c2d936a4 | 2056 | { |
efefbcae | 2057 | ds_put_format(fp->s, "%smod_nw_src:%s"IP_FMT, |
b1c5bf1f | 2058 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 | 2059 | } |
097d4939 | 2060 | |
c2d936a4 | 2061 | static void |
50f96b10 | 2062 | format_SET_IPV4_DST(const struct ofpact_ipv4 *a, |
efefbcae | 2063 | const struct ofpact_format_params *fp) |
c2d936a4 | 2064 | { |
efefbcae | 2065 | ds_put_format(fp->s, "%smod_nw_dst:%s"IP_FMT, |
b1c5bf1f | 2066 | colors.param, colors.end, IP_ARGS(a->ipv4)); |
c2d936a4 | 2067 | } |
ae6f7530 BP |
2068 | |
2069 | static enum ofperr | |
2070 | check_set_ipv4(struct ofpact_check_params *cp) | |
2071 | { | |
2072 | ovs_be16 dl_type = get_dl_type(&cp->match->flow); | |
2073 | if (dl_type != htons(ETH_TYPE_IP)) { | |
2074 | inconsistent_match(&cp->usable_protocols); | |
2075 | } | |
2076 | return 0; | |
2077 | } | |
2078 | ||
2079 | static enum ofperr | |
2080 | check_SET_IPV4_SRC(const struct ofpact_ipv4 *a OVS_UNUSED, | |
2081 | struct ofpact_check_params *cp) | |
2082 | { | |
2083 | return check_set_ipv4(cp); | |
2084 | } | |
2085 | ||
2086 | static enum ofperr | |
2087 | check_SET_IPV4_DST(const struct ofpact_ipv4 *a OVS_UNUSED, | |
2088 | struct ofpact_check_params *cp) | |
2089 | { | |
2090 | return check_set_ipv4(cp); | |
2091 | } | |
c2d936a4 BP |
2092 | \f |
2093 | /* Set IPv4/v6 TOS actions. */ | |
097d4939 | 2094 | |
c2d936a4 | 2095 | static enum ofperr |
f3cd3ac7 JS |
2096 | decode_OFPAT_RAW_SET_NW_TOS(uint8_t dscp, |
2097 | enum ofp_version ofp_version OVS_UNUSED, | |
2098 | struct ofpbuf *out) | |
c2d936a4 BP |
2099 | { |
2100 | if (dscp & ~IP_DSCP_MASK) { | |
2101 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2102 | } else { | |
2103 | ofpact_put_SET_IP_DSCP(out)->dscp = dscp; | |
2104 | return 0; | |
a6fd70bb JR |
2105 | } |
2106 | } | |
2107 | ||
a6fd70bb | 2108 | static void |
c2d936a4 BP |
2109 | encode_SET_IP_DSCP(const struct ofpact_dscp *dscp, |
2110 | enum ofp_version ofp_version, struct ofpbuf *out) | |
a6fd70bb | 2111 | { |
c2d936a4 BP |
2112 | if (ofp_version < OFP12_VERSION) { |
2113 | put_OFPAT_SET_NW_TOS(out, ofp_version, dscp->dscp); | |
2114 | } else { | |
128684a6 | 2115 | put_set_field(out, ofp_version, MFF_IP_DSCP_SHIFTED, dscp->dscp >> 2); |
c2d936a4 BP |
2116 | } |
2117 | } | |
a6fd70bb | 2118 | |
cab50449 | 2119 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
2120 | parse_SET_IP_DSCP(char *arg, const struct ofpact_parse_params *pp) |
2121 | ||
c2d936a4 BP |
2122 | { |
2123 | uint8_t tos; | |
2124 | char *error; | |
a6fd70bb | 2125 | |
c2d936a4 BP |
2126 | error = str_to_u8(arg, "TOS", &tos); |
2127 | if (error) { | |
2128 | return error; | |
2129 | } | |
a6fd70bb | 2130 | |
c2d936a4 BP |
2131 | if (tos & ~IP_DSCP_MASK) { |
2132 | return xasprintf("%s: not a valid TOS", arg); | |
a6fd70bb | 2133 | } |
efefbcae | 2134 | ofpact_put_SET_IP_DSCP(pp->ofpacts)->dscp = tos; |
c2d936a4 | 2135 | return NULL; |
a6fd70bb JR |
2136 | } |
2137 | ||
b2dd70be | 2138 | static void |
50f96b10 | 2139 | format_SET_IP_DSCP(const struct ofpact_dscp *a, |
efefbcae | 2140 | const struct ofpact_format_params *fp) |
b2dd70be | 2141 | { |
efefbcae BP |
2142 | ds_put_format(fp->s, "%smod_nw_tos:%s%d", |
2143 | colors.param, colors.end, a->dscp); | |
c2d936a4 | 2144 | } |
ae6f7530 BP |
2145 | |
2146 | static enum ofperr | |
2147 | check_set_ip(struct ofpact_check_params *cp) | |
2148 | { | |
2149 | if (!is_ip_any(&cp->match->flow)) { | |
2150 | inconsistent_match(&cp->usable_protocols); | |
2151 | } | |
2152 | return 0; | |
2153 | } | |
2154 | ||
2155 | static enum ofperr | |
2156 | check_SET_IP_DSCP(const struct ofpact_dscp *a OVS_UNUSED, | |
2157 | struct ofpact_check_params *cp) | |
2158 | { | |
2159 | return check_set_ip(cp); | |
2160 | } | |
c2d936a4 BP |
2161 | \f |
2162 | /* Set IPv4/v6 ECN actions. */ | |
b2dd70be | 2163 | |
c2d936a4 | 2164 | static enum ofperr |
f3cd3ac7 JS |
2165 | decode_OFPAT_RAW11_SET_NW_ECN(uint8_t ecn, |
2166 | enum ofp_version ofp_version OVS_UNUSED, | |
2167 | struct ofpbuf *out) | |
c2d936a4 BP |
2168 | { |
2169 | if (ecn & ~IP_ECN_MASK) { | |
2170 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
b2dd70be | 2171 | } else { |
c2d936a4 BP |
2172 | ofpact_put_SET_IP_ECN(out)->ecn = ecn; |
2173 | return 0; | |
b2dd70be JR |
2174 | } |
2175 | } | |
2176 | ||
c2d936a4 BP |
2177 | static void |
2178 | encode_SET_IP_ECN(const struct ofpact_ecn *ip_ecn, | |
2179 | enum ofp_version ofp_version, struct ofpbuf *out) | |
d01c980f | 2180 | { |
c2d936a4 BP |
2181 | uint8_t ecn = ip_ecn->ecn; |
2182 | if (ofp_version == OFP10_VERSION) { | |
4b684612 BP |
2183 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_ECN), |
2184 | .ofs = 0, .n_bits = 2 }; | |
2185 | put_reg_load(out, &dst, ecn); | |
c2d936a4 BP |
2186 | } else if (ofp_version == OFP11_VERSION) { |
2187 | put_OFPAT11_SET_NW_ECN(out, ecn); | |
2188 | } else { | |
128684a6 | 2189 | put_set_field(out, ofp_version, MFF_IP_ECN, ecn); |
c2d936a4 BP |
2190 | } |
2191 | } | |
d01c980f | 2192 | |
cab50449 | 2193 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2194 | parse_SET_IP_ECN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2195 | { |
2196 | uint8_t ecn; | |
2197 | char *error; | |
d01c980f | 2198 | |
c2d936a4 | 2199 | error = str_to_u8(arg, "ECN", &ecn); |
d01c980f BP |
2200 | if (error) { |
2201 | return error; | |
2202 | } | |
2203 | ||
c2d936a4 BP |
2204 | if (ecn & ~IP_ECN_MASK) { |
2205 | return xasprintf("%s: not a valid ECN", arg); | |
2206 | } | |
efefbcae | 2207 | ofpact_put_SET_IP_ECN(pp->ofpacts)->ecn = ecn; |
c2d936a4 | 2208 | return NULL; |
d01c980f BP |
2209 | } |
2210 | ||
c2d936a4 | 2211 | static void |
50f96b10 | 2212 | format_SET_IP_ECN(const struct ofpact_ecn *a, |
efefbcae | 2213 | const struct ofpact_format_params *fp) |
c2d936a4 | 2214 | { |
efefbcae | 2215 | ds_put_format(fp->s, "%smod_nw_ecn:%s%d", |
b1c5bf1f | 2216 | colors.param, colors.end, a->ecn); |
c2d936a4 | 2217 | } |
ae6f7530 BP |
2218 | |
2219 | static enum ofperr | |
2220 | check_SET_IP_ECN(const struct ofpact_ecn *a OVS_UNUSED, | |
2221 | struct ofpact_check_params *cp) | |
2222 | { | |
2223 | return check_set_ip(cp); | |
2224 | } | |
c2d936a4 BP |
2225 | \f |
2226 | /* Set IPv4/v6 TTL actions. */ | |
2227 | ||
d01c980f | 2228 | static enum ofperr |
f3cd3ac7 JS |
2229 | decode_OFPAT_RAW11_SET_NW_TTL(uint8_t ttl, |
2230 | enum ofp_version ofp_version OVS_UNUSED, | |
2231 | struct ofpbuf *out) | |
d01c980f | 2232 | { |
c2d936a4 BP |
2233 | ofpact_put_SET_IP_TTL(out)->ttl = ttl; |
2234 | return 0; | |
2235 | } | |
2236 | ||
2237 | static void | |
2238 | encode_SET_IP_TTL(const struct ofpact_ip_ttl *ttl, | |
2239 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2240 | { | |
2241 | if (ofp_version >= OFP11_VERSION) { | |
2242 | put_OFPAT11_SET_NW_TTL(out, ttl->ttl); | |
2243 | } else { | |
56a91749 BP |
2244 | struct mf_subfield dst = { .field = mf_from_id(MFF_IP_TTL), |
2245 | .ofs = 0, .n_bits = 8 }; | |
2246 | put_reg_load(out, &dst, ttl->ttl); | |
c2d936a4 BP |
2247 | } |
2248 | } | |
2249 | ||
cab50449 | 2250 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
2251 | parse_SET_IP_TTL(char *arg, const struct ofpact_parse_params *pp) |
2252 | ||
c2d936a4 BP |
2253 | { |
2254 | uint8_t ttl; | |
2255 | char *error; | |
d01c980f | 2256 | |
c2d936a4 | 2257 | error = str_to_u8(arg, "TTL", &ttl); |
d01c980f BP |
2258 | if (error) { |
2259 | return error; | |
2260 | } | |
2261 | ||
efefbcae | 2262 | ofpact_put_SET_IP_TTL(pp->ofpacts)->ttl = ttl; |
c2d936a4 BP |
2263 | return NULL; |
2264 | } | |
d01c980f | 2265 | |
c2d936a4 | 2266 | static void |
50f96b10 | 2267 | format_SET_IP_TTL(const struct ofpact_ip_ttl *a, |
efefbcae | 2268 | const struct ofpact_format_params *fp) |
c2d936a4 | 2269 | { |
efefbcae BP |
2270 | ds_put_format(fp->s, "%smod_nw_ttl:%s%d", |
2271 | colors.param, colors.end, a->ttl); | |
c2d936a4 | 2272 | } |
ae6f7530 BP |
2273 | |
2274 | static enum ofperr | |
2275 | check_SET_IP_TTL(const struct ofpact_ip_ttl *a OVS_UNUSED, | |
2276 | struct ofpact_check_params *cp) | |
2277 | { | |
2278 | return check_set_ip(cp); | |
2279 | } | |
c2d936a4 BP |
2280 | \f |
2281 | /* Set TCP/UDP/SCTP port actions. */ | |
d01c980f | 2282 | |
c2d936a4 | 2283 | static enum ofperr |
f3cd3ac7 JS |
2284 | decode_OFPAT_RAW_SET_TP_SRC(ovs_be16 port, |
2285 | enum ofp_version ofp_version OVS_UNUSED, | |
2286 | struct ofpbuf *out) | |
c2d936a4 BP |
2287 | { |
2288 | ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(port); | |
2289 | return 0; | |
2290 | } | |
d01c980f | 2291 | |
c2d936a4 | 2292 | static enum ofperr |
f3cd3ac7 JS |
2293 | decode_OFPAT_RAW_SET_TP_DST(ovs_be16 port, |
2294 | enum ofp_version ofp_version OVS_UNUSED, | |
2295 | struct ofpbuf *out) | |
c2d936a4 BP |
2296 | { |
2297 | ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(port); | |
2298 | return 0; | |
2299 | } | |
d01c980f | 2300 | |
c2d936a4 BP |
2301 | static void |
2302 | encode_SET_L4_port(const struct ofpact_l4_port *l4_port, | |
2303 | enum ofp_version ofp_version, enum ofp_raw_action_type raw, | |
2304 | enum mf_field_id field, struct ofpbuf *out) | |
2305 | { | |
2306 | uint16_t port = l4_port->port; | |
3e34fbdd | 2307 | |
c2d936a4 | 2308 | if (ofp_version >= OFP12_VERSION && field != MFF_N_IDS) { |
128684a6 | 2309 | put_set_field(out, ofp_version, field, port); |
c2d936a4 BP |
2310 | } else { |
2311 | ofpact_put_raw(out, ofp_version, raw, port); | |
2312 | } | |
2313 | } | |
8e61c110 | 2314 | |
c2d936a4 BP |
2315 | static void |
2316 | encode_SET_L4_SRC_PORT(const struct ofpact_l4_port *l4_port, | |
2317 | enum ofp_version ofp_version, struct ofpbuf *out) | |
2318 | { | |
2319 | uint8_t proto = l4_port->flow_ip_proto; | |
2320 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_SRC | |
2321 | : proto == IPPROTO_UDP ? MFF_UDP_SRC | |
2322 | : proto == IPPROTO_SCTP ? MFF_SCTP_SRC | |
2323 | : MFF_N_IDS); | |
276c4e7a | 2324 | |
c2d936a4 BP |
2325 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_SRC, field, out); |
2326 | } | |
d01c980f | 2327 | |
c2d936a4 BP |
2328 | static void |
2329 | encode_SET_L4_DST_PORT(const struct ofpact_l4_port *l4_port, | |
2330 | enum ofp_version ofp_version, | |
2331 | struct ofpbuf *out) | |
2332 | { | |
2333 | uint8_t proto = l4_port->flow_ip_proto; | |
2334 | enum mf_field_id field = (proto == IPPROTO_TCP ? MFF_TCP_DST | |
2335 | : proto == IPPROTO_UDP ? MFF_UDP_DST | |
2336 | : proto == IPPROTO_SCTP ? MFF_SCTP_DST | |
2337 | : MFF_N_IDS); | |
d01c980f | 2338 | |
c2d936a4 BP |
2339 | encode_SET_L4_port(l4_port, ofp_version, OFPAT_RAW_SET_TP_DST, field, out); |
2340 | } | |
7bcb1506 | 2341 | |
cab50449 | 2342 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2343 | parse_SET_L4_SRC_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2344 | { |
2345 | return str_to_u16(arg, "source port", | |
efefbcae | 2346 | &ofpact_put_SET_L4_SRC_PORT(pp->ofpacts)->port); |
c2d936a4 | 2347 | } |
d01c980f | 2348 | |
cab50449 | 2349 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2350 | parse_SET_L4_DST_PORT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
2351 | { |
2352 | return str_to_u16(arg, "destination port", | |
efefbcae | 2353 | &ofpact_put_SET_L4_DST_PORT(pp->ofpacts)->port); |
c2d936a4 | 2354 | } |
d01c980f | 2355 | |
c2d936a4 | 2356 | static void |
50f96b10 | 2357 | format_SET_L4_SRC_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2358 | const struct ofpact_format_params *fp) |
c2d936a4 | 2359 | { |
efefbcae BP |
2360 | ds_put_format(fp->s, "%smod_tp_src:%s%d", |
2361 | colors.param, colors.end, a->port); | |
c2d936a4 | 2362 | } |
d01c980f | 2363 | |
c2d936a4 | 2364 | static void |
50f96b10 | 2365 | format_SET_L4_DST_PORT(const struct ofpact_l4_port *a, |
efefbcae | 2366 | const struct ofpact_format_params *fp) |
c2d936a4 | 2367 | { |
efefbcae BP |
2368 | ds_put_format(fp->s, "%smod_tp_dst:%s%d", |
2369 | colors.param, colors.end, a->port); | |
c2d936a4 | 2370 | } |
ae6f7530 BP |
2371 | |
2372 | static enum ofperr | |
2373 | check_set_l4_port(struct ofpact_l4_port *a, struct ofpact_check_params *cp) | |
2374 | { | |
2375 | const struct flow *flow = &cp->match->flow; | |
2376 | if (!is_ip_any(flow) | |
2377 | || flow->nw_frag & FLOW_NW_FRAG_LATER | |
2378 | || (flow->nw_proto != IPPROTO_TCP && | |
2379 | flow->nw_proto != IPPROTO_UDP && | |
2380 | flow->nw_proto != IPPROTO_SCTP)) { | |
2381 | inconsistent_match(&cp->usable_protocols); | |
2382 | } | |
2383 | ||
2384 | /* Note the transport protocol in use, to allow this action to be converted | |
2385 | * to an OF1.2 set_field action later if necessary. */ | |
2386 | a->flow_ip_proto = flow->nw_proto; | |
2387 | ||
2388 | return 0; | |
2389 | } | |
2390 | ||
2391 | static enum ofperr | |
2392 | check_SET_L4_SRC_PORT(struct ofpact_l4_port *a, struct ofpact_check_params *cp) | |
2393 | { | |
2394 | return check_set_l4_port(a, cp); | |
2395 | } | |
2396 | ||
2397 | static enum ofperr | |
2398 | check_SET_L4_DST_PORT(struct ofpact_l4_port *a, struct ofpact_check_params *cp) | |
2399 | { | |
2400 | return check_set_l4_port(a, cp); | |
2401 | } | |
c2d936a4 | 2402 | \f |
73178f20 BP |
2403 | /* Action structure for OFPAT_COPY_FIELD. */ |
2404 | struct ofp15_action_copy_field { | |
2405 | ovs_be16 type; /* OFPAT_COPY_FIELD. */ | |
2406 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2407 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2408 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2409 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
650763d8 | 2410 | uint8_t pad[2]; |
f13cdd73 BP |
2411 | /* Followed by: |
2412 | * - OXM header for source field. | |
2413 | * - OXM header for destination field. | |
2414 | * - Padding with 0-bytes to a multiple of 8 bytes. | |
650763d8 BP |
2415 | * The "pad2" member is the beginning of the above. */ |
2416 | uint8_t pad2[4]; | |
73178f20 | 2417 | }; |
f13cdd73 | 2418 | OFP_ASSERT(sizeof(struct ofp15_action_copy_field) == 16); |
73178f20 | 2419 | |
914624f8 BP |
2420 | /* Action structure for OpenFlow 1.3 extension copy-field action.. */ |
2421 | struct onf_action_copy_field { | |
2422 | ovs_be16 type; /* OFPAT_EXPERIMENTER. */ | |
2423 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2424 | ovs_be32 experimenter; /* ONF_VENDOR_ID. */ | |
2425 | ovs_be16 exp_type; /* 3200. */ | |
2426 | uint8_t pad[2]; /* Not used. */ | |
2427 | ovs_be16 n_bits; /* Number of bits to copy. */ | |
2428 | ovs_be16 src_offset; /* Starting bit offset in source. */ | |
2429 | ovs_be16 dst_offset; /* Starting bit offset in destination. */ | |
2430 | uint8_t pad2[2]; /* Not used. */ | |
2431 | /* Followed by: | |
2432 | * - OXM header for source field. | |
2433 | * - OXM header for destination field. | |
2434 | * - Padding with 0-bytes (either 0 or 4 of them) to a multiple of 8 bytes. | |
2435 | * The "pad3" member is the beginning of the above. */ | |
2436 | uint8_t pad3[4]; /* Not used. */ | |
2437 | }; | |
2438 | OFP_ASSERT(sizeof(struct onf_action_copy_field) == 24); | |
2439 | ||
c2d936a4 BP |
2440 | /* Action structure for NXAST_REG_MOVE. |
2441 | * | |
2442 | * Copies src[src_ofs:src_ofs+n_bits] to dst[dst_ofs:dst_ofs+n_bits], where | |
2443 | * a[b:c] denotes the bits within 'a' numbered 'b' through 'c' (not including | |
2444 | * bit 'c'). Bit numbering starts at 0 for the least-significant bit, 1 for | |
2445 | * the next most significant bit, and so on. | |
2446 | * | |
2447 | * 'src' and 'dst' are nxm_header values with nxm_hasmask=0. (It doesn't make | |
2448 | * sense to use nxm_hasmask=1 because the action does not do any kind of | |
2449 | * matching; it uses the actual value of a field.) | |
2450 | * | |
2451 | * The following nxm_header values are potentially acceptable as 'src': | |
2452 | * | |
2453 | * - NXM_OF_IN_PORT | |
2454 | * - NXM_OF_ETH_DST | |
2455 | * - NXM_OF_ETH_SRC | |
2456 | * - NXM_OF_ETH_TYPE | |
2457 | * - NXM_OF_VLAN_TCI | |
2458 | * - NXM_OF_IP_TOS | |
2459 | * - NXM_OF_IP_PROTO | |
2460 | * - NXM_OF_IP_SRC | |
2461 | * - NXM_OF_IP_DST | |
2462 | * - NXM_OF_TCP_SRC | |
2463 | * - NXM_OF_TCP_DST | |
2464 | * - NXM_OF_UDP_SRC | |
2465 | * - NXM_OF_UDP_DST | |
2466 | * - NXM_OF_ICMP_TYPE | |
2467 | * - NXM_OF_ICMP_CODE | |
2468 | * - NXM_OF_ARP_OP | |
2469 | * - NXM_OF_ARP_SPA | |
2470 | * - NXM_OF_ARP_TPA | |
2471 | * - NXM_NX_TUN_ID | |
2472 | * - NXM_NX_ARP_SHA | |
2473 | * - NXM_NX_ARP_THA | |
2474 | * - NXM_NX_ICMPV6_TYPE | |
2475 | * - NXM_NX_ICMPV6_CODE | |
2476 | * - NXM_NX_ND_SLL | |
2477 | * - NXM_NX_ND_TLL | |
2478 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2479 | * - NXM_NX_PKT_MARK | |
2480 | * - NXM_NX_TUN_IPV4_SRC | |
2481 | * - NXM_NX_TUN_IPV4_DST | |
2482 | * | |
2483 | * The following nxm_header values are potentially acceptable as 'dst': | |
2484 | * | |
2485 | * - NXM_OF_ETH_DST | |
2486 | * - NXM_OF_ETH_SRC | |
2487 | * - NXM_OF_IP_TOS | |
2488 | * - NXM_OF_IP_SRC | |
2489 | * - NXM_OF_IP_DST | |
2490 | * - NXM_OF_TCP_SRC | |
2491 | * - NXM_OF_TCP_DST | |
2492 | * - NXM_OF_UDP_SRC | |
2493 | * - NXM_OF_UDP_DST | |
f6ecf944 JP |
2494 | * - NXM_OF_ICMP_TYPE |
2495 | * - NXM_OF_ICMP_CODE | |
2496 | * - NXM_NX_ICMPV6_TYPE | |
2497 | * - NXM_NX_ICMPV6_CODE | |
c2d936a4 BP |
2498 | * - NXM_NX_ARP_SHA |
2499 | * - NXM_NX_ARP_THA | |
2500 | * - NXM_OF_ARP_OP | |
2501 | * - NXM_OF_ARP_SPA | |
2502 | * - NXM_OF_ARP_TPA | |
2503 | * Modifying any of the above fields changes the corresponding packet | |
2504 | * header. | |
2505 | * | |
2506 | * - NXM_OF_IN_PORT | |
2507 | * | |
2508 | * - NXM_NX_REG(idx) for idx in the switch's accepted range. | |
2509 | * | |
2510 | * - NXM_NX_PKT_MARK | |
2511 | * | |
2512 | * - NXM_OF_VLAN_TCI. Modifying this field's value has side effects on the | |
2513 | * packet's 802.1Q header. Setting a value with CFI=0 removes the 802.1Q | |
2514 | * header (if any), ignoring the other bits. Setting a value with CFI=1 | |
2515 | * adds or modifies the 802.1Q header appropriately, setting the TCI field | |
2516 | * to the field's new value (with the CFI bit masked out). | |
2517 | * | |
2518 | * - NXM_NX_TUN_ID, NXM_NX_TUN_IPV4_SRC, NXM_NX_TUN_IPV4_DST. Modifying | |
2519 | * any of these values modifies the corresponding tunnel header field used | |
2520 | * for the packet's next tunnel encapsulation, if allowed by the | |
2521 | * configuration of the output tunnel port. | |
2522 | * | |
2523 | * A given nxm_header value may be used as 'src' or 'dst' only on a flow whose | |
2524 | * nx_match satisfies its prerequisites. For example, NXM_OF_IP_TOS may be | |
2525 | * used only if the flow's nx_match includes an nxm_entry that specifies | |
2526 | * nxm_type=NXM_OF_ETH_TYPE, nxm_hasmask=0, and nxm_value=0x0800. | |
2527 | * | |
2528 | * The switch will reject actions for which src_ofs+n_bits is greater than the | |
2529 | * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with | |
2530 | * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
2531 | * | |
2532 | * This action behaves properly when 'src' overlaps with 'dst', that is, it | |
2533 | * behaves as if 'src' were copied out to a temporary buffer, then the | |
2534 | * temporary buffer copied to 'dst'. | |
2535 | */ | |
2536 | struct nx_action_reg_move { | |
2537 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2538 | ovs_be16 len; /* Length is 24. */ | |
2539 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2540 | ovs_be16 subtype; /* NXAST_REG_MOVE. */ | |
2541 | ovs_be16 n_bits; /* Number of bits. */ | |
2542 | ovs_be16 src_ofs; /* Starting bit offset in source. */ | |
2543 | ovs_be16 dst_ofs; /* Starting bit offset in destination. */ | |
bad8a439 BP |
2544 | /* Followed by: |
2545 | * - OXM/NXM header for source field (4 or 8 bytes). | |
2546 | * - OXM/NXM header for destination field (4 or 8 bytes). | |
2547 | * - Padding with 0-bytes to a multiple of 8 bytes, if necessary. */ | |
c2d936a4 | 2548 | }; |
bad8a439 | 2549 | OFP_ASSERT(sizeof(struct nx_action_reg_move) == 16); |
ff14eb7a | 2550 | |
73178f20 | 2551 | static enum ofperr |
914624f8 BP |
2552 | decode_copy_field__(ovs_be16 src_offset, ovs_be16 dst_offset, ovs_be16 n_bits, |
2553 | const void *action, ovs_be16 action_len, size_t oxm_offset, | |
04f48a68 | 2554 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2555 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
73178f20 | 2556 | { |
0a2869d5 | 2557 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2558 | enum ofperr error; |
2559 | ||
914624f8 BP |
2560 | move->ofpact.raw = ONFACT_RAW13_COPY_FIELD; |
2561 | move->src.ofs = ntohs(src_offset); | |
2562 | move->src.n_bits = ntohs(n_bits); | |
2563 | move->dst.ofs = ntohs(dst_offset); | |
2564 | move->dst.n_bits = ntohs(n_bits); | |
2565 | ||
0a2869d5 | 2566 | struct ofpbuf b = ofpbuf_const_initializer(action, ntohs(action_len)); |
914624f8 | 2567 | ofpbuf_pull(&b, oxm_offset); |
0a2869d5 | 2568 | |
5c7c16d8 YHW |
2569 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2570 | tlv_bitmap); | |
f13cdd73 BP |
2571 | if (error) { |
2572 | return error; | |
2573 | } | |
5c7c16d8 YHW |
2574 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, |
2575 | tlv_bitmap); | |
f13cdd73 BP |
2576 | if (error) { |
2577 | return error; | |
2578 | } | |
f13cdd73 | 2579 | |
6fd6ed71 | 2580 | if (!is_all_zeros(b.data, b.size)) { |
f13cdd73 BP |
2581 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2582 | } | |
2583 | ||
73178f20 BP |
2584 | return nxm_reg_move_check(move, NULL); |
2585 | } | |
2586 | ||
914624f8 BP |
2587 | static enum ofperr |
2588 | decode_OFPAT_RAW15_COPY_FIELD(const struct ofp15_action_copy_field *oacf, | |
f3cd3ac7 | 2589 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2590 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2591 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
914624f8 BP |
2592 | { |
2593 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2594 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2595 | OBJECT_OFFSETOF(oacf, pad2), vl_mff_map, |
5c7c16d8 | 2596 | tlv_bitmap, ofpacts); |
914624f8 BP |
2597 | } |
2598 | ||
2599 | static enum ofperr | |
2600 | decode_ONFACT_RAW13_COPY_FIELD(const struct onf_action_copy_field *oacf, | |
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) |
914624f8 BP |
2604 | { |
2605 | return decode_copy_field__(oacf->src_offset, oacf->dst_offset, | |
2606 | oacf->n_bits, oacf, oacf->len, | |
04f48a68 | 2607 | OBJECT_OFFSETOF(oacf, pad3), vl_mff_map, |
5c7c16d8 | 2608 | tlv_bitmap, ofpacts); |
914624f8 BP |
2609 | } |
2610 | ||
c2d936a4 BP |
2611 | static enum ofperr |
2612 | decode_NXAST_RAW_REG_MOVE(const struct nx_action_reg_move *narm, | |
f3cd3ac7 | 2613 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2614 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2615 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
c2d936a4 | 2616 | { |
0a2869d5 | 2617 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(ofpacts); |
5c7c16d8 YHW |
2618 | enum ofperr error; |
2619 | ||
914624f8 | 2620 | move->ofpact.raw = NXAST_RAW_REG_MOVE; |
c2d936a4 BP |
2621 | move->src.ofs = ntohs(narm->src_ofs); |
2622 | move->src.n_bits = ntohs(narm->n_bits); | |
c2d936a4 BP |
2623 | move->dst.ofs = ntohs(narm->dst_ofs); |
2624 | move->dst.n_bits = ntohs(narm->n_bits); | |
d01c980f | 2625 | |
0a2869d5 | 2626 | struct ofpbuf b = ofpbuf_const_initializer(narm, ntohs(narm->len)); |
bad8a439 | 2627 | ofpbuf_pull(&b, sizeof *narm); |
0a2869d5 | 2628 | |
5c7c16d8 YHW |
2629 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->src.field, NULL, |
2630 | tlv_bitmap); | |
bad8a439 BP |
2631 | if (error) { |
2632 | return error; | |
2633 | } | |
5c7c16d8 YHW |
2634 | |
2635 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, &move->dst.field, NULL, | |
2636 | tlv_bitmap); | |
bad8a439 BP |
2637 | if (error) { |
2638 | return error; | |
2639 | } | |
04f48a68 | 2640 | |
6fd6ed71 | 2641 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2642 | return OFPERR_NXBRC_MUST_BE_ZERO; |
2643 | } | |
2644 | ||
c2d936a4 BP |
2645 | return nxm_reg_move_check(move, NULL); |
2646 | } | |
d01c980f | 2647 | |
c2d936a4 BP |
2648 | static void |
2649 | encode_REG_MOVE(const struct ofpact_reg_move *move, | |
73178f20 BP |
2650 | enum ofp_version ofp_version, struct ofpbuf *out) |
2651 | { | |
914624f8 BP |
2652 | /* For OpenFlow 1.3, the choice of ONFACT_RAW13_COPY_FIELD versus |
2653 | * NXAST_RAW_REG_MOVE is somewhat difficult. Neither one is guaranteed to | |
2654 | * be supported by every OpenFlow 1.3 implementation. It would be ideal to | |
2655 | * probe for support. Until we have that ability, we currently prefer | |
2656 | * NXAST_RAW_REG_MOVE for backward compatibility with older Open vSwitch | |
2657 | * versions. */ | |
6fd6ed71 | 2658 | size_t start_ofs = out->size; |
73178f20 | 2659 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 | 2660 | struct ofp15_action_copy_field *copy = put_OFPAT15_COPY_FIELD(out); |
73178f20 BP |
2661 | copy->n_bits = htons(move->dst.n_bits); |
2662 | copy->src_offset = htons(move->src.ofs); | |
2663 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2664 | out->size = out->size - sizeof copy->pad2; |
04f48a68 YHW |
2665 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2666 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
914624f8 BP |
2667 | } else if (ofp_version == OFP13_VERSION |
2668 | && move->ofpact.raw == ONFACT_RAW13_COPY_FIELD) { | |
2669 | struct onf_action_copy_field *copy = put_ONFACT13_COPY_FIELD(out); | |
2670 | copy->n_bits = htons(move->dst.n_bits); | |
2671 | copy->src_offset = htons(move->src.ofs); | |
2672 | copy->dst_offset = htons(move->dst.ofs); | |
6fd6ed71 | 2673 | out->size = out->size - sizeof copy->pad3; |
04f48a68 YHW |
2674 | nx_put_mff_header(out, move->src.field, ofp_version, false); |
2675 | nx_put_mff_header(out, move->dst.field, ofp_version, false); | |
73178f20 | 2676 | } else { |
bad8a439 | 2677 | struct nx_action_reg_move *narm = put_NXAST_REG_MOVE(out); |
73178f20 BP |
2678 | narm->n_bits = htons(move->dst.n_bits); |
2679 | narm->src_ofs = htons(move->src.ofs); | |
2680 | narm->dst_ofs = htons(move->dst.ofs); | |
04f48a68 YHW |
2681 | nx_put_mff_header(out, move->src.field, 0, false); |
2682 | nx_put_mff_header(out, move->dst.field, 0, false); | |
73178f20 | 2683 | } |
bad8a439 | 2684 | pad_ofpat(out, start_ofs); |
c2d936a4 | 2685 | } |
e9536ecb | 2686 | |
cab50449 | 2687 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 2688 | parse_REG_MOVE(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 2689 | { |
efefbcae | 2690 | struct ofpact_reg_move *move = ofpact_put_REG_MOVE(pp->ofpacts); |
21b2fa61 | 2691 | return nxm_parse_reg_move(move, arg); |
c2d936a4 | 2692 | } |
0f3f3c3d | 2693 | |
c2d936a4 | 2694 | static void |
50f96b10 | 2695 | format_REG_MOVE(const struct ofpact_reg_move *a, |
efefbcae | 2696 | const struct ofpact_format_params *fp) |
c2d936a4 | 2697 | { |
efefbcae | 2698 | nxm_format_reg_move(a, fp->s); |
c2d936a4 | 2699 | } |
ae6f7530 BP |
2700 | |
2701 | static enum ofperr | |
2702 | check_REG_MOVE(const struct ofpact_reg_move *a, | |
2703 | const struct ofpact_check_params *cp) | |
2704 | { | |
2705 | return nxm_reg_move_check(a, cp->match); | |
2706 | } | |
c2d936a4 | 2707 | \f |
7eb4b1f1 BP |
2708 | /* Action structure for OFPAT12_SET_FIELD. */ |
2709 | struct ofp12_action_set_field { | |
2710 | ovs_be16 type; /* OFPAT12_SET_FIELD. */ | |
2711 | ovs_be16 len; /* Length is padded to 64 bits. */ | |
2712 | ||
2713 | /* Followed by: | |
2714 | * - An OXM header, value, and (in OpenFlow 1.5+) optionally a mask. | |
2715 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2716 | * | |
2717 | * The "pad" member is the beginning of the above. */ | |
2718 | uint8_t pad[4]; | |
2719 | }; | |
2720 | OFP_ASSERT(sizeof(struct ofp12_action_set_field) == 8); | |
2721 | ||
c2d936a4 BP |
2722 | /* Action structure for NXAST_REG_LOAD. |
2723 | * | |
2724 | * Copies value[0:n_bits] to dst[ofs:ofs+n_bits], where a[b:c] denotes the bits | |
2725 | * within 'a' numbered 'b' through 'c' (not including bit 'c'). Bit numbering | |
2726 | * starts at 0 for the least-significant bit, 1 for the next most significant | |
2727 | * bit, and so on. | |
2728 | * | |
2729 | * 'dst' is an nxm_header with nxm_hasmask=0. See the documentation for | |
2730 | * NXAST_REG_MOVE, above, for the permitted fields and for the side effects of | |
2731 | * loading them. | |
2732 | * | |
2733 | * The 'ofs' and 'n_bits' fields are combined into a single 'ofs_nbits' field | |
2734 | * to avoid enlarging the structure by another 8 bytes. To allow 'n_bits' to | |
2735 | * take a value between 1 and 64 (inclusive) while taking up only 6 bits, it is | |
2736 | * also stored as one less than its true value: | |
2737 | * | |
2738 | * 15 6 5 0 | |
2739 | * +------------------------------+------------------+ | |
2740 | * | ofs | n_bits - 1 | | |
2741 | * +------------------------------+------------------+ | |
2742 | * | |
2743 | * The switch will reject actions for which ofs+n_bits is greater than the | |
2744 | * width of 'dst', or in which any bits in 'value' with value 2**n_bits or | |
2745 | * greater are set to 1, with error type OFPET_BAD_ACTION, code | |
2746 | * OFPBAC_BAD_ARGUMENT. | |
2747 | */ | |
2748 | struct nx_action_reg_load { | |
2749 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
2750 | ovs_be16 len; /* Length is 24. */ | |
2751 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
2752 | ovs_be16 subtype; /* NXAST_REG_LOAD. */ | |
2753 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
2754 | ovs_be32 dst; /* Destination register. */ | |
2755 | ovs_be64 value; /* Immediate value. */ | |
2756 | }; | |
2757 | OFP_ASSERT(sizeof(struct nx_action_reg_load) == 24); | |
b676167a | 2758 | |
aad28f47 BP |
2759 | /* The NXAST_REG_LOAD2 action structure is "struct ext_action_header", |
2760 | * followed by: | |
bad8a439 | 2761 | * |
aad28f47 BP |
2762 | * - An NXM/OXM header, value, and optionally a mask. |
2763 | * - Enough 0-bytes to pad out to a multiple of 64 bits. | |
2764 | * | |
2765 | * The "pad" member is the beginning of the above. */ | |
bad8a439 | 2766 | |
c2d936a4 | 2767 | static enum ofperr |
7eb4b1f1 | 2768 | decode_ofpat_set_field(const struct ofp12_action_set_field *oasf, |
04f48a68 | 2769 | bool may_mask, const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2770 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7fdb60a7 | 2771 | { |
0a2869d5 | 2772 | struct ofpbuf b = ofpbuf_const_initializer(oasf, ntohs(oasf->len)); |
7eb4b1f1 | 2773 | ofpbuf_pull(&b, OBJECT_OFFSETOF(oasf, pad)); |
0a2869d5 | 2774 | |
128684a6 JR |
2775 | union mf_value value, mask; |
2776 | const struct mf_field *field; | |
5c7c16d8 YHW |
2777 | enum ofperr error; |
2778 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, | |
2779 | may_mask ? &mask : NULL, tlv_bitmap); | |
178742f9 | 2780 | if (error) { |
178742f9 BP |
2781 | return (error == OFPERR_OFPBMC_BAD_MASK |
2782 | ? OFPERR_OFPBAC_BAD_SET_MASK | |
2783 | : error); | |
c2d936a4 | 2784 | } |
5c7c16d8 | 2785 | |
7eb4b1f1 | 2786 | if (!may_mask) { |
128684a6 | 2787 | memset(&mask, 0xff, field->n_bytes); |
7eb4b1f1 | 2788 | } |
178742f9 | 2789 | |
6fd6ed71 | 2790 | if (!is_all_zeros(b.data, b.size)) { |
c2d936a4 BP |
2791 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2792 | } | |
7fdb60a7 | 2793 | |
178742f9 BP |
2794 | /* OpenFlow says specifically that one may not set OXM_OF_IN_PORT via |
2795 | * Set-Field. */ | |
128684a6 | 2796 | if (field->id == MFF_IN_PORT_OXM) { |
178742f9 | 2797 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
c2d936a4 | 2798 | } |
178742f9 | 2799 | |
c2d936a4 | 2800 | /* oxm_length is now validated to be compatible with mf_value. */ |
128684a6 | 2801 | if (!field->writable) { |
178742f9 | 2802 | VLOG_WARN_RL(&rl, "destination field %s is not writable", |
128684a6 | 2803 | field->name); |
c2d936a4 BP |
2804 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2805 | } | |
c2d936a4 | 2806 | |
d3cb080e | 2807 | /* The value must be valid for match. OpenFlow 1.5 also says, |
7eb4b1f1 BP |
2808 | * "In an OXM_OF_VLAN_VID set-field action, the OFPVID_PRESENT bit must be |
2809 | * a 1-bit in oxm_value and in oxm_mask." */ | |
128684a6 JR |
2810 | if (!mf_is_value_valid(field, &value) |
2811 | || (field->id == MFF_VLAN_VID | |
2812 | && (!(mask.be16 & htons(OFPVID12_PRESENT)) | |
2813 | || !(value.be16 & htons(OFPVID12_PRESENT))))) { | |
c2d936a4 | 2814 | struct ds ds = DS_EMPTY_INITIALIZER; |
50f96b10 | 2815 | mf_format(field, &value, NULL, NULL, &ds); |
c2d936a4 | 2816 | VLOG_WARN_RL(&rl, "Invalid value for set field %s: %s", |
128684a6 | 2817 | field->name, ds_cstr(&ds)); |
c2d936a4 BP |
2818 | ds_destroy(&ds); |
2819 | ||
2820 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
7fdb60a7 | 2821 | } |
128684a6 JR |
2822 | |
2823 | ofpact_put_set_field(ofpacts, field, &value, &mask); | |
c2d936a4 | 2824 | return 0; |
7fdb60a7 SH |
2825 | } |
2826 | ||
7eb4b1f1 BP |
2827 | static enum ofperr |
2828 | decode_OFPAT_RAW12_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2829 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2830 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2831 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2832 | { |
5c7c16d8 YHW |
2833 | return decode_ofpat_set_field(oasf, false, vl_mff_map, tlv_bitmap, |
2834 | ofpacts); | |
7eb4b1f1 BP |
2835 | } |
2836 | ||
2837 | static enum ofperr | |
2838 | decode_OFPAT_RAW15_SET_FIELD(const struct ofp12_action_set_field *oasf, | |
f3cd3ac7 | 2839 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2840 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2841 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
7eb4b1f1 | 2842 | { |
5c7c16d8 | 2843 | return decode_ofpat_set_field(oasf, true, vl_mff_map, tlv_bitmap, ofpacts); |
7eb4b1f1 BP |
2844 | } |
2845 | ||
2846 | static enum ofperr | |
2847 | decode_NXAST_RAW_REG_LOAD(const struct nx_action_reg_load *narl, | |
f3cd3ac7 | 2848 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2849 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2850 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7eb4b1f1 | 2851 | { |
7eb4b1f1 BP |
2852 | struct mf_subfield dst; |
2853 | enum ofperr error; | |
2854 | ||
7eb4b1f1 BP |
2855 | dst.ofs = nxm_decode_ofs(narl->ofs_nbits); |
2856 | dst.n_bits = nxm_decode_n_bits(narl->ofs_nbits); | |
5c7c16d8 YHW |
2857 | error = mf_vl_mff_mf_from_nxm_header(ntohl(narl->dst), vl_mff_map, |
2858 | &dst.field, tlv_bitmap); | |
2859 | if (error) { | |
2860 | return error; | |
04f48a68 YHW |
2861 | } |
2862 | ||
7eb4b1f1 BP |
2863 | error = mf_check_dst(&dst, NULL); |
2864 | if (error) { | |
2865 | return error; | |
2866 | } | |
2867 | ||
2868 | /* Reject 'narl' if a bit numbered 'n_bits' or higher is set to 1 in | |
2869 | * narl->value. */ | |
2870 | if (dst.n_bits < 64 && ntohll(narl->value) >> dst.n_bits) { | |
2871 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
2872 | } | |
2873 | ||
128684a6 JR |
2874 | struct ofpact_set_field *sf = ofpact_put_reg_load(out, dst.field, NULL, |
2875 | NULL); | |
7eb4b1f1 | 2876 | bitwise_put(ntohll(narl->value), |
128684a6 | 2877 | sf->value, dst.field->n_bytes, dst.ofs, |
7eb4b1f1 BP |
2878 | dst.n_bits); |
2879 | bitwise_put(UINT64_MAX, | |
128684a6 | 2880 | ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, |
7eb4b1f1 | 2881 | dst.n_bits); |
7eb4b1f1 BP |
2882 | return 0; |
2883 | } | |
2884 | ||
bad8a439 | 2885 | static enum ofperr |
aad28f47 | 2886 | decode_NXAST_RAW_REG_LOAD2(const struct ext_action_header *eah, |
f3cd3ac7 | 2887 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 2888 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 2889 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
bad8a439 | 2890 | { |
aad28f47 BP |
2891 | struct ofpbuf b = ofpbuf_const_initializer(eah, ntohs(eah->len)); |
2892 | ofpbuf_pull(&b, OBJECT_OFFSETOF(eah, pad)); | |
0a2869d5 | 2893 | |
128684a6 JR |
2894 | union mf_value value, mask; |
2895 | const struct mf_field *field; | |
5c7c16d8 YHW |
2896 | enum ofperr error; |
2897 | error = mf_vl_mff_nx_pull_entry(&b, vl_mff_map, &field, &value, &mask, | |
2898 | tlv_bitmap); | |
bad8a439 BP |
2899 | if (error) { |
2900 | return error; | |
2901 | } | |
5c7c16d8 | 2902 | |
6fd6ed71 | 2903 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
2904 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2905 | } | |
2906 | ||
128684a6 JR |
2907 | if (!field->writable) { |
2908 | VLOG_WARN_RL(&rl, "destination field %s is not writable", field->name); | |
bad8a439 BP |
2909 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
2910 | } | |
128684a6 JR |
2911 | |
2912 | /* Put value and mask. */ | |
2913 | ofpact_put_reg_load2(out, field, &value, &mask); | |
bad8a439 BP |
2914 | return 0; |
2915 | } | |
2916 | ||
7fdb60a7 | 2917 | static void |
128684a6 JR |
2918 | put_set_field(struct ofpbuf *openflow, enum ofp_version ofp_version, |
2919 | enum mf_field_id field, uint64_t value_) | |
7fdb60a7 | 2920 | { |
7eb4b1f1 | 2921 | struct ofp12_action_set_field *oasf OVS_UNUSED; |
178742f9 | 2922 | int n_bytes = mf_from_id(field)->n_bytes; |
6fd6ed71 | 2923 | size_t start_ofs = openflow->size; |
178742f9 | 2924 | union mf_value value; |
7fdb60a7 | 2925 | |
178742f9 | 2926 | value.be64 = htonll(value_ << (8 * (8 - n_bytes))); |
7fdb60a7 | 2927 | |
7eb4b1f1 | 2928 | oasf = put_OFPAT12_SET_FIELD(openflow); |
6fd6ed71 | 2929 | openflow->size = openflow->size - sizeof oasf->pad; |
04f48a68 | 2930 | nx_put_entry(openflow, mf_from_id(field), ofp_version, &value, NULL); |
178742f9 | 2931 | pad_ofpat(openflow, start_ofs); |
7fdb60a7 SH |
2932 | } |
2933 | ||
4b684612 BP |
2934 | static void |
2935 | put_reg_load(struct ofpbuf *openflow, | |
2936 | const struct mf_subfield *dst, uint64_t value) | |
2937 | { | |
2938 | ovs_assert(dst->n_bits <= 64); | |
2939 | ||
2940 | struct nx_action_reg_load *narl = put_NXAST_REG_LOAD(openflow); | |
2941 | narl->ofs_nbits = nxm_encode_ofs_nbits(dst->ofs, dst->n_bits); | |
04f48a68 | 2942 | narl->dst = htonl(nxm_header_from_mff(dst->field)); |
4b684612 BP |
2943 | narl->value = htonll(value); |
2944 | } | |
2945 | ||
7eb4b1f1 BP |
2946 | static bool |
2947 | next_load_segment(const struct ofpact_set_field *sf, | |
2948 | struct mf_subfield *dst, uint64_t *value) | |
2949 | { | |
fa078489 BP |
2950 | int n_bits = sf->field->n_bits; |
2951 | int n_bytes = sf->field->n_bytes; | |
7eb4b1f1 BP |
2952 | int start = dst->ofs + dst->n_bits; |
2953 | ||
fa078489 | 2954 | if (start < n_bits) { |
7eb4b1f1 | 2955 | dst->field = sf->field; |
128684a6 JR |
2956 | dst->ofs = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 1, start, |
2957 | n_bits); | |
fa078489 | 2958 | if (dst->ofs < n_bits) { |
128684a6 JR |
2959 | dst->n_bits = bitwise_scan(ofpact_set_field_mask(sf), n_bytes, 0, |
2960 | dst->ofs + 1, | |
fa078489 | 2961 | MIN(dst->ofs + 64, n_bits)) - dst->ofs; |
128684a6 | 2962 | *value = bitwise_get(sf->value, n_bytes, dst->ofs, dst->n_bits); |
7eb4b1f1 BP |
2963 | return true; |
2964 | } | |
2965 | } | |
2966 | return false; | |
2967 | } | |
178742f9 | 2968 | |
7eb4b1f1 | 2969 | /* Convert 'sf' to a series of REG_LOADs. */ |
7fdb60a7 | 2970 | static void |
c2d936a4 | 2971 | set_field_to_nxast(const struct ofpact_set_field *sf, struct ofpbuf *openflow) |
7fdb60a7 | 2972 | { |
bad8a439 | 2973 | /* If 'sf' cannot be encoded as NXAST_REG_LOAD because it requires an |
4fe04a7e JG |
2974 | * experimenter OXM or is variable length (or if it came in as |
2975 | * NXAST_REG_LOAD2), encode as NXAST_REG_LOAD2. Otherwise use | |
2976 | * NXAST_REG_LOAD, which is backward compatible. */ | |
bad8a439 | 2977 | if (sf->ofpact.raw == NXAST_RAW_REG_LOAD2 |
4fe04a7e | 2978 | || !mf_nxm_header(sf->field->id) || sf->field->variable_len) { |
aad28f47 | 2979 | struct ext_action_header *eah OVS_UNUSED; |
6fd6ed71 | 2980 | size_t start_ofs = openflow->size; |
bad8a439 | 2981 | |
aad28f47 BP |
2982 | eah = put_NXAST_REG_LOAD2(openflow); |
2983 | openflow->size = openflow->size - sizeof eah->pad; | |
04f48a68 | 2984 | nx_put_entry(openflow, sf->field, 0, sf->value, |
128684a6 | 2985 | ofpact_set_field_mask(sf)); |
bad8a439 BP |
2986 | pad_ofpat(openflow, start_ofs); |
2987 | } else { | |
2988 | struct mf_subfield dst; | |
2989 | uint64_t value; | |
7eb4b1f1 | 2990 | |
bad8a439 BP |
2991 | dst.ofs = dst.n_bits = 0; |
2992 | while (next_load_segment(sf, &dst, &value)) { | |
4b684612 | 2993 | put_reg_load(openflow, &dst, value); |
bad8a439 | 2994 | } |
7fdb60a7 SH |
2995 | } |
2996 | } | |
2997 | ||
7eb4b1f1 BP |
2998 | /* Convert 'sf', which must set an entire field, to standard OpenFlow 1.0/1.1 |
2999 | * actions, if we can, falling back to Nicira extensions if we must. | |
7fdb60a7 | 3000 | * |
c2d936a4 BP |
3001 | * We check only meta-flow types that can appear within set field actions and |
3002 | * that have a mapping to compatible action types. These struct mf_field | |
3003 | * definitions have a defined OXM or NXM header value and specify the field as | |
3004 | * writable. */ | |
3005 | static void | |
3006 | set_field_to_legacy_openflow(const struct ofpact_set_field *sf, | |
3007 | enum ofp_version ofp_version, | |
3008 | struct ofpbuf *out) | |
7fdb60a7 | 3009 | { |
c2d936a4 BP |
3010 | switch ((int) sf->field->id) { |
3011 | case MFF_VLAN_TCI: { | |
128684a6 | 3012 | ovs_be16 tci = sf->value->be16; |
c2d936a4 BP |
3013 | bool cfi = (tci & htons(VLAN_CFI)) != 0; |
3014 | uint16_t vid = vlan_tci_to_vid(tci); | |
3015 | uint8_t pcp = vlan_tci_to_pcp(tci); | |
3016 | ||
3017 | if (ofp_version < OFP11_VERSION) { | |
3018 | /* NXM_OF_VLAN_TCI to OpenFlow 1.0 mapping: | |
3019 | * | |
3020 | * If CFI=1, Add or modify VLAN VID & PCP. | |
3021 | * If CFI=0, strip VLAN header, if any. | |
3022 | */ | |
3023 | if (cfi) { | |
3024 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
3025 | put_OFPAT10_SET_VLAN_PCP(out, pcp); | |
3026 | } else { | |
3027 | put_OFPAT10_STRIP_VLAN(out); | |
3028 | } | |
3029 | } else { | |
3030 | /* NXM_OF_VLAN_TCI to OpenFlow 1.1 mapping: | |
3031 | * | |
3032 | * If CFI=1, Add or modify VLAN VID & PCP. | |
3033 | * OpenFlow 1.1 set actions only apply if the packet | |
3034 | * already has VLAN tags. To be sure that is the case | |
3035 | * we have to push a VLAN header. As we do not support | |
3036 | * multiple layers of VLANs, this is a no-op, if a VLAN | |
3037 | * header already exists. This may backfire, however, | |
3038 | * when we start supporting multiple layers of VLANs. | |
3039 | * If CFI=0, strip VLAN header, if any. | |
3040 | */ | |
3041 | if (cfi) { | |
3042 | /* Push a VLAN tag, if one was not seen at action validation | |
3043 | * time. */ | |
3044 | if (!sf->flow_has_vlan) { | |
3045 | put_OFPAT11_PUSH_VLAN(out, htons(ETH_TYPE_VLAN_8021Q)); | |
3046 | } | |
3047 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
3048 | put_OFPAT11_SET_VLAN_PCP(out, pcp); | |
3049 | } else { | |
3050 | /* If the flow did not match on vlan, we have no way of | |
3051 | * knowing if the vlan tag exists, so we must POP just to be | |
3052 | * sure. */ | |
3053 | put_OFPAT11_POP_VLAN(out); | |
3054 | } | |
3055 | } | |
3056 | break; | |
3057 | } | |
7fdb60a7 | 3058 | |
c2d936a4 | 3059 | case MFF_VLAN_VID: { |
128684a6 | 3060 | uint16_t vid = ntohs(sf->value->be16) & VLAN_VID_MASK; |
c2d936a4 BP |
3061 | if (ofp_version == OFP10_VERSION) { |
3062 | put_OFPAT10_SET_VLAN_VID(out, vid); | |
3063 | } else { | |
3064 | put_OFPAT11_SET_VLAN_VID(out, vid); | |
3065 | } | |
3066 | break; | |
3067 | } | |
3068 | ||
3069 | case MFF_VLAN_PCP: | |
3070 | if (ofp_version == OFP10_VERSION) { | |
128684a6 | 3071 | put_OFPAT10_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 | 3072 | } else { |
128684a6 | 3073 | put_OFPAT11_SET_VLAN_PCP(out, sf->value->u8); |
c2d936a4 BP |
3074 | } |
3075 | break; | |
3076 | ||
3077 | case MFF_ETH_SRC: | |
128684a6 | 3078 | put_OFPAT_SET_DL_SRC(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
3079 | break; |
3080 | ||
3081 | case MFF_ETH_DST: | |
128684a6 | 3082 | put_OFPAT_SET_DL_DST(out, ofp_version)->dl_addr = sf->value->mac; |
c2d936a4 BP |
3083 | break; |
3084 | ||
3085 | case MFF_IPV4_SRC: | |
128684a6 | 3086 | put_OFPAT_SET_NW_SRC(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
3087 | break; |
3088 | ||
3089 | case MFF_IPV4_DST: | |
128684a6 | 3090 | put_OFPAT_SET_NW_DST(out, ofp_version, sf->value->be32); |
c2d936a4 BP |
3091 | break; |
3092 | ||
3093 | case MFF_IP_DSCP: | |
128684a6 | 3094 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8); |
c2d936a4 BP |
3095 | break; |
3096 | ||
3097 | case MFF_IP_DSCP_SHIFTED: | |
128684a6 | 3098 | put_OFPAT_SET_NW_TOS(out, ofp_version, sf->value->u8 << 2); |
c2d936a4 BP |
3099 | break; |
3100 | ||
1a1e1a49 EG |
3101 | case MFF_IP_ECN: { |
3102 | struct ofpact_ecn ip_ecn = { .ecn = sf->value->u8 }; | |
3103 | encode_SET_IP_ECN(&ip_ecn, ofp_version, out); | |
4b684612 | 3104 | break; |
1a1e1a49 | 3105 | } |
4b684612 | 3106 | |
c2d936a4 BP |
3107 | case MFF_TCP_SRC: |
3108 | case MFF_UDP_SRC: | |
128684a6 | 3109 | put_OFPAT_SET_TP_SRC(out, sf->value->be16); |
c2d936a4 BP |
3110 | break; |
3111 | ||
3112 | case MFF_TCP_DST: | |
3113 | case MFF_UDP_DST: | |
128684a6 | 3114 | put_OFPAT_SET_TP_DST(out, sf->value->be16); |
c2d936a4 BP |
3115 | break; |
3116 | ||
3117 | default: | |
3118 | set_field_to_nxast(sf, out); | |
3119 | break; | |
7fdb60a7 SH |
3120 | } |
3121 | } | |
3122 | ||
7eb4b1f1 BP |
3123 | static void |
3124 | set_field_to_set_field(const struct ofpact_set_field *sf, | |
3125 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3126 | { | |
3127 | struct ofp12_action_set_field *oasf OVS_UNUSED; | |
6fd6ed71 | 3128 | size_t start_ofs = out->size; |
7eb4b1f1 BP |
3129 | |
3130 | oasf = put_OFPAT12_SET_FIELD(out); | |
6fd6ed71 | 3131 | out->size = out->size - sizeof oasf->pad; |
04f48a68 | 3132 | nx_put_entry(out, sf->field, ofp_version, sf->value, |
128684a6 | 3133 | ofpact_set_field_mask(sf)); |
7eb4b1f1 BP |
3134 | pad_ofpat(out, start_ofs); |
3135 | } | |
3136 | ||
c2d936a4 BP |
3137 | static void |
3138 | encode_SET_FIELD(const struct ofpact_set_field *sf, | |
3139 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3140 | { | |
7eb4b1f1 | 3141 | if (ofp_version >= OFP15_VERSION) { |
bad8a439 BP |
3142 | /* OF1.5+ only has Set-Field (reg_load is redundant so we drop it |
3143 | * entirely). */ | |
7eb4b1f1 | 3144 | set_field_to_set_field(sf, ofp_version, out); |
bad8a439 BP |
3145 | } else if (sf->ofpact.raw == NXAST_RAW_REG_LOAD || |
3146 | sf->ofpact.raw == NXAST_RAW_REG_LOAD2) { | |
3147 | /* It came in as reg_load, send it out the same way. */ | |
7eb4b1f1 BP |
3148 | set_field_to_nxast(sf, out); |
3149 | } else if (ofp_version < OFP12_VERSION) { | |
3150 | /* OpenFlow 1.0 and 1.1 don't have Set-Field. */ | |
c2d936a4 | 3151 | set_field_to_legacy_openflow(sf, ofp_version, out); |
128684a6 | 3152 | } else if (is_all_ones(ofpact_set_field_mask(sf), sf->field->n_bytes)) { |
7eb4b1f1 BP |
3153 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action sets an |
3154 | * entire field, so encode it as OFPAT_SET_FIELD. */ | |
3155 | set_field_to_set_field(sf, ofp_version, out); | |
c2d936a4 | 3156 | } else { |
7eb4b1f1 BP |
3157 | /* We're encoding to OpenFlow 1.2, 1.3, or 1.4. The action cannot be |
3158 | * encoded as OFPAT_SET_FIELD because it does not set an entire field, | |
3159 | * so encode it as reg_load. */ | |
3160 | set_field_to_nxast(sf, out); | |
c2d936a4 BP |
3161 | } |
3162 | } | |
3163 | ||
36b43aa6 JS |
3164 | /* Parses the input argument 'arg' into the key, value, and delimiter |
3165 | * components that are common across the reg_load and set_field action format. | |
3166 | * | |
3167 | * With an argument like "1->metadata", sets the following pointers to | |
3168 | * point within 'arg': | |
3169 | * key: "metadata" | |
3170 | * value: "1" | |
3171 | * delim: "->" | |
3172 | * | |
3173 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3174 | * error. The caller is responsible for freeing the returned string. */ | |
3175 | static char * OVS_WARN_UNUSED_RESULT | |
3176 | set_field_split_str(char *arg, char **key, char **value, char **delim) | |
3177 | { | |
3178 | char *value_end; | |
3179 | ||
3180 | *value = arg; | |
3181 | value_end = strstr(arg, "->"); | |
3182 | *key = value_end + strlen("->"); | |
3183 | if (delim) { | |
3184 | *delim = value_end; | |
3185 | } | |
3186 | ||
3187 | if (!value_end) { | |
3188 | return xasprintf("%s: missing `->'", arg); | |
3189 | } | |
3190 | if (strlen(value_end) <= strlen("->")) { | |
3191 | return xasprintf("%s: missing field name following `->'", arg); | |
3192 | } | |
3193 | ||
3194 | return NULL; | |
3195 | } | |
3196 | ||
c2d936a4 | 3197 | /* Parses a "set_field" action with argument 'arg', appending the parsed |
efefbcae | 3198 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3199 | * |
3200 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3201 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3202 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3203 | set_field_parse__(char *arg, const struct ofpact_parse_params *pp) |
7fdb60a7 | 3204 | { |
c2d936a4 BP |
3205 | char *value; |
3206 | char *delim; | |
3207 | char *key; | |
3208 | const struct mf_field *mf; | |
128684a6 | 3209 | union mf_value sf_value, sf_mask; |
c2d936a4 | 3210 | char *error; |
7fdb60a7 | 3211 | |
36b43aa6 JS |
3212 | error = set_field_split_str(arg, &key, &value, &delim); |
3213 | if (error) { | |
3214 | return error; | |
c2d936a4 | 3215 | } |
e3f8f887 | 3216 | |
c2d936a4 BP |
3217 | mf = mf_from_name(key); |
3218 | if (!mf) { | |
3219 | return xasprintf("%s is not a valid OXM field name", key); | |
3220 | } | |
3221 | if (!mf->writable) { | |
3222 | return xasprintf("%s is read-only", key); | |
3223 | } | |
128684a6 | 3224 | |
c2d936a4 | 3225 | delim[0] = '\0'; |
efefbcae | 3226 | error = mf_parse(mf, value, pp->port_map, &sf_value, &sf_mask); |
7fdb60a7 SH |
3227 | if (error) { |
3228 | return error; | |
3229 | } | |
3230 | ||
128684a6 | 3231 | if (!mf_is_value_valid(mf, &sf_value)) { |
c2d936a4 | 3232 | return xasprintf("%s is not a valid value for field %s", value, key); |
7fdb60a7 SH |
3233 | } |
3234 | ||
efefbcae | 3235 | *pp->usable_protocols &= mf->usable_protocols_exact; |
128684a6 | 3236 | |
efefbcae | 3237 | ofpact_put_set_field(pp->ofpacts, mf, &sf_value, &sf_mask); |
c2d936a4 | 3238 | return NULL; |
7fdb60a7 SH |
3239 | } |
3240 | ||
c2d936a4 | 3241 | /* Parses 'arg' as the argument to a "set_field" action, and appends such an |
efefbcae | 3242 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3243 | * |
3244 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3245 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3246 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3247 | parse_SET_FIELD(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3248 | { |
3249 | char *copy = xstrdup(arg); | |
efefbcae | 3250 | char *error = set_field_parse__(copy, pp); |
c2d936a4 BP |
3251 | free(copy); |
3252 | return error; | |
3253 | } | |
a359d5ad | 3254 | |
cab50449 | 3255 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3256 | parse_reg_load(char *arg, const struct ofpact_parse_params *pp) |
7eb4b1f1 | 3257 | { |
7eb4b1f1 | 3258 | struct mf_subfield dst; |
36b43aa6 | 3259 | char *key, *value_str; |
81270993 | 3260 | union mf_value value; |
7eb4b1f1 BP |
3261 | char *error; |
3262 | ||
36b43aa6 JS |
3263 | error = set_field_split_str(arg, &key, &value_str, NULL); |
3264 | if (error) { | |
3265 | return error; | |
7eb4b1f1 | 3266 | } |
36b43aa6 JS |
3267 | |
3268 | error = mf_parse_subfield(&dst, key); | |
7eb4b1f1 BP |
3269 | if (error) { |
3270 | return error; | |
3271 | } | |
3272 | ||
81270993 JS |
3273 | if (parse_int_string(value_str, (uint8_t *)&value, dst.field->n_bytes, |
3274 | &key)) { | |
3275 | return xasprintf("%s: cannot parse integer value", arg); | |
3276 | } | |
3277 | ||
3278 | if (!bitwise_is_all_zeros(&value, dst.field->n_bytes, dst.n_bits, | |
3279 | dst.field->n_bytes * 8 - dst.n_bits)) { | |
3280 | struct ds ds; | |
3281 | ||
3282 | ds_init(&ds); | |
50f96b10 | 3283 | mf_format(dst.field, &value, NULL, NULL, &ds); |
81270993 JS |
3284 | error = xasprintf("%s: value %s does not fit into %d bits", |
3285 | arg, ds_cstr(&ds), dst.n_bits); | |
3286 | ds_destroy(&ds); | |
3287 | return error; | |
7eb4b1f1 BP |
3288 | } |
3289 | ||
efefbcae BP |
3290 | struct ofpact_set_field *sf = ofpact_put_reg_load(pp->ofpacts, dst.field, |
3291 | NULL, NULL); | |
81270993 | 3292 | |
128684a6 JR |
3293 | bitwise_copy(&value, dst.field->n_bytes, 0, sf->value, |
3294 | dst.field->n_bytes, dst.ofs, dst.n_bits); | |
3295 | bitwise_one(ofpact_set_field_mask(sf), dst.field->n_bytes, dst.ofs, | |
3296 | dst.n_bits); | |
7eb4b1f1 BP |
3297 | return NULL; |
3298 | } | |
3299 | ||
c2d936a4 | 3300 | static void |
50f96b10 | 3301 | format_SET_FIELD(const struct ofpact_set_field *a, |
efefbcae | 3302 | const struct ofpact_format_params *fp) |
c2d936a4 | 3303 | { |
7eb4b1f1 BP |
3304 | if (a->ofpact.raw == NXAST_RAW_REG_LOAD) { |
3305 | struct mf_subfield dst; | |
3306 | uint64_t value; | |
3307 | ||
3308 | dst.ofs = dst.n_bits = 0; | |
3309 | while (next_load_segment(a, &dst, &value)) { | |
efefbcae | 3310 | ds_put_format(fp->s, "%sload:%s%#"PRIx64"%s->%s", |
b1c5bf1f QM |
3311 | colors.special, colors.end, value, |
3312 | colors.special, colors.end); | |
efefbcae BP |
3313 | mf_format_subfield(&dst, fp->s); |
3314 | ds_put_char(fp->s, ','); | |
7eb4b1f1 | 3315 | } |
efefbcae | 3316 | ds_chomp(fp->s, ','); |
7eb4b1f1 | 3317 | } else { |
efefbcae BP |
3318 | ds_put_format(fp->s, "%sset_field:%s", colors.special, colors.end); |
3319 | mf_format(a->field, a->value, ofpact_set_field_mask(a), | |
3320 | fp->port_map, fp->s); | |
3321 | ds_put_format(fp->s, "%s->%s%s", | |
b1c5bf1f | 3322 | colors.special, colors.end, a->field->name); |
7eb4b1f1 BP |
3323 | } |
3324 | } | |
3325 | ||
ae6f7530 BP |
3326 | static enum ofperr |
3327 | check_SET_FIELD(struct ofpact_set_field *a, | |
3328 | const struct ofpact_check_params *cp) | |
3329 | { | |
3330 | const struct mf_field *mf = a->field; | |
3331 | struct flow *flow = &cp->match->flow; | |
3332 | ovs_be16 *tci = &flow->vlans[0].tci; | |
3333 | ||
3334 | /* Require OXM_OF_VLAN_VID to have an existing VLAN header. */ | |
3335 | if (!mf_are_prereqs_ok(mf, flow, NULL) | |
3336 | || (mf->id == MFF_VLAN_VID && !(*tci & htons(VLAN_CFI)))) { | |
3337 | VLOG_WARN_RL(&rl, "set_field %s lacks correct prerequisites", | |
3338 | mf->name); | |
3339 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
3340 | } | |
3341 | ||
3342 | /* Remember if we saw a VLAN tag in the flow, to aid translating to | |
3343 | * OpenFlow 1.1 if need be. */ | |
3344 | a->flow_has_vlan = (*tci & htons(VLAN_CFI)) != 0; | |
3345 | if (mf->id == MFF_VLAN_TCI) { | |
3346 | /* The set field may add or remove the VLAN tag, | |
3347 | * Mark the status temporarily. */ | |
3348 | *tci = a->value->be16; | |
3349 | } | |
3350 | ||
3351 | return 0; | |
3352 | } | |
3353 | ||
128684a6 JR |
3354 | /* Appends an OFPACT_SET_FIELD ofpact with enough space for the value and mask |
3355 | * for the 'field' to 'ofpacts' and returns it. Fills in the value from | |
3356 | * 'value', if non-NULL, and mask from 'mask' if non-NULL. If 'value' is | |
3357 | * non-NULL and 'mask' is NULL, an all-ones mask will be filled in. */ | |
3358 | struct ofpact_set_field * | |
3359 | ofpact_put_set_field(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3360 | const void *value, const void *mask) | |
3361 | { | |
3362 | struct ofpact_set_field *sf = ofpact_put_SET_FIELD(ofpacts); | |
3363 | sf->field = field; | |
3364 | ||
3365 | /* Fill in the value and mask if given, otherwise put zeroes so that the | |
3366 | * caller may fill in the value and mask itself. */ | |
3367 | if (value) { | |
3368 | ofpbuf_put_uninit(ofpacts, 2 * field->n_bytes); | |
3369 | sf = ofpacts->header; | |
3370 | memcpy(sf->value, value, field->n_bytes); | |
3371 | if (mask) { | |
3372 | memcpy(ofpact_set_field_mask(sf), mask, field->n_bytes); | |
3373 | } else { | |
3374 | memset(ofpact_set_field_mask(sf), 0xff, field->n_bytes); | |
3375 | } | |
3376 | } else { | |
3377 | ofpbuf_put_zeros(ofpacts, 2 * field->n_bytes); | |
3378 | sf = ofpacts->header; | |
3379 | } | |
3380 | /* Update length. */ | |
3381 | ofpact_finish_SET_FIELD(ofpacts, &sf); | |
3382 | ||
3383 | return sf; | |
3384 | } | |
3385 | ||
7eb4b1f1 BP |
3386 | /* Appends an OFPACT_SET_FIELD ofpact to 'ofpacts' and returns it. The ofpact |
3387 | * is marked such that, if possible, it will be translated to OpenFlow as | |
3388 | * NXAST_REG_LOAD extension actions rather than OFPAT_SET_FIELD, either because | |
3389 | * that was the way that the action was expressed when it came into OVS or for | |
3390 | * backward compatibility. */ | |
3391 | struct ofpact_set_field * | |
128684a6 JR |
3392 | ofpact_put_reg_load(struct ofpbuf *ofpacts, const struct mf_field *field, |
3393 | const void *value, const void *mask) | |
7eb4b1f1 | 3394 | { |
128684a6 JR |
3395 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, |
3396 | mask); | |
7eb4b1f1 | 3397 | sf->ofpact.raw = NXAST_RAW_REG_LOAD; |
128684a6 | 3398 | |
7eb4b1f1 | 3399 | return sf; |
c2d936a4 | 3400 | } |
128684a6 JR |
3401 | |
3402 | struct ofpact_set_field * | |
3403 | ofpact_put_reg_load2(struct ofpbuf *ofpacts, const struct mf_field *field, | |
3404 | const void *value, const void *mask) | |
3405 | { | |
3406 | struct ofpact_set_field *sf = ofpact_put_set_field(ofpacts, field, value, | |
3407 | mask); | |
3408 | sf->ofpact.raw = NXAST_RAW_REG_LOAD2; | |
3409 | ||
3410 | return sf; | |
3411 | } | |
3412 | ||
c2d936a4 BP |
3413 | \f |
3414 | /* Action structure for NXAST_STACK_PUSH and NXAST_STACK_POP. | |
3415 | * | |
3416 | * Pushes (or pops) field[offset: offset + n_bits] to (or from) | |
3417 | * top of the stack. | |
3418 | */ | |
3419 | struct nx_action_stack { | |
3420 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3421 | ovs_be16 len; /* Length is 16. */ | |
3422 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3423 | ovs_be16 subtype; /* NXAST_STACK_PUSH or NXAST_STACK_POP. */ | |
3424 | ovs_be16 offset; /* Bit offset into the field. */ | |
bad8a439 BP |
3425 | /* Followed by: |
3426 | * - OXM/NXM header for field to push or pop (4 or 8 bytes). | |
3427 | * - ovs_be16 'n_bits', the number of bits to extract from the field. | |
3428 | * - Enough 0-bytes to pad out the action to 24 bytes. */ | |
3429 | uint8_t pad[12]; /* See above. */ | |
a359d5ad | 3430 | }; |
c2d936a4 | 3431 | OFP_ASSERT(sizeof(struct nx_action_stack) == 24); |
a359d5ad | 3432 | |
bad8a439 | 3433 | static enum ofperr |
c2d936a4 | 3434 | decode_stack_action(const struct nx_action_stack *nasp, |
5c7c16d8 | 3435 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
c2d936a4 | 3436 | struct ofpact_stack *stack_action) |
a359d5ad | 3437 | { |
5c7c16d8 | 3438 | enum ofperr error; |
c2d936a4 | 3439 | stack_action->subfield.ofs = ntohs(nasp->offset); |
bad8a439 | 3440 | |
0a2869d5 | 3441 | struct ofpbuf b = ofpbuf_const_initializer(nasp, sizeof *nasp); |
bad8a439 | 3442 | ofpbuf_pull(&b, OBJECT_OFFSETOF(nasp, pad)); |
5c7c16d8 YHW |
3443 | error = mf_vl_mff_nx_pull_header(&b, vl_mff_map, |
3444 | &stack_action->subfield.field, NULL, | |
3445 | tlv_bitmap); | |
bad8a439 BP |
3446 | if (error) { |
3447 | return error; | |
3448 | } | |
5c7c16d8 | 3449 | |
6fd6ed71 | 3450 | stack_action->subfield.n_bits = ntohs(*(const ovs_be16 *) b.data); |
bad8a439 | 3451 | ofpbuf_pull(&b, 2); |
6fd6ed71 | 3452 | if (!is_all_zeros(b.data, b.size)) { |
bad8a439 BP |
3453 | return OFPERR_NXBRC_MUST_BE_ZERO; |
3454 | } | |
3455 | ||
3456 | return 0; | |
a359d5ad IY |
3457 | } |
3458 | ||
c2d936a4 BP |
3459 | static enum ofperr |
3460 | decode_NXAST_RAW_STACK_PUSH(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3461 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3462 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3463 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
a359d5ad | 3464 | { |
c2d936a4 | 3465 | struct ofpact_stack *push = ofpact_put_STACK_PUSH(ofpacts); |
5c7c16d8 YHW |
3466 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3467 | push); | |
bad8a439 | 3468 | return error ? error : nxm_stack_push_check(push, NULL); |
a359d5ad IY |
3469 | } |
3470 | ||
c2d936a4 BP |
3471 | static enum ofperr |
3472 | decode_NXAST_RAW_STACK_POP(const struct nx_action_stack *nasp, | |
f3cd3ac7 | 3473 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 3474 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 3475 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) |
084c53de | 3476 | { |
c2d936a4 | 3477 | struct ofpact_stack *pop = ofpact_put_STACK_POP(ofpacts); |
5c7c16d8 YHW |
3478 | enum ofperr error = decode_stack_action(nasp, vl_mff_map, tlv_bitmap, |
3479 | pop); | |
bad8a439 | 3480 | return error ? error : nxm_stack_pop_check(pop, NULL); |
084c53de BP |
3481 | } |
3482 | ||
c2d936a4 BP |
3483 | static void |
3484 | encode_STACK_op(const struct ofpact_stack *stack_action, | |
3485 | struct nx_action_stack *nasp) | |
c0621c39 | 3486 | { |
bad8a439 BP |
3487 | struct ofpbuf b; |
3488 | ovs_be16 n_bits; | |
3489 | ||
c2d936a4 | 3490 | nasp->offset = htons(stack_action->subfield.ofs); |
bad8a439 BP |
3491 | |
3492 | ofpbuf_use_stack(&b, nasp, ntohs(nasp->len)); | |
3493 | ofpbuf_put_uninit(&b, OBJECT_OFFSETOF(nasp, pad)); | |
04f48a68 | 3494 | nx_put_mff_header(&b, stack_action->subfield.field, 0, false); |
bad8a439 BP |
3495 | n_bits = htons(stack_action->subfield.n_bits); |
3496 | ofpbuf_put(&b, &n_bits, sizeof n_bits); | |
c0621c39 AW |
3497 | } |
3498 | ||
c2d936a4 BP |
3499 | static void |
3500 | encode_STACK_PUSH(const struct ofpact_stack *stack, | |
3501 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
3502 | { | |
3503 | encode_STACK_op(stack, put_NXAST_STACK_PUSH(out)); | |
3504 | } | |
8e97815e | 3505 | |
c2d936a4 BP |
3506 | static void |
3507 | encode_STACK_POP(const struct ofpact_stack *stack, | |
3508 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
8e97815e | 3509 | { |
c2d936a4 BP |
3510 | encode_STACK_op(stack, put_NXAST_STACK_POP(out)); |
3511 | } | |
8e97815e | 3512 | |
cab50449 | 3513 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3514 | parse_STACK_PUSH(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3515 | { |
efefbcae | 3516 | return nxm_parse_stack_action(ofpact_put_STACK_PUSH(pp->ofpacts), arg); |
c2d936a4 | 3517 | } |
8e97815e | 3518 | |
cab50449 | 3519 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3520 | parse_STACK_POP(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3521 | { |
efefbcae | 3522 | return nxm_parse_stack_action(ofpact_put_STACK_POP(pp->ofpacts), arg); |
8e97815e BP |
3523 | } |
3524 | ||
c2d936a4 | 3525 | static void |
50f96b10 | 3526 | format_STACK_PUSH(const struct ofpact_stack *a, |
efefbcae | 3527 | const struct ofpact_format_params *fp) |
8e97815e | 3528 | { |
efefbcae | 3529 | nxm_format_stack_push(a, fp->s); |
c2d936a4 | 3530 | } |
8e97815e | 3531 | |
c2d936a4 | 3532 | static void |
50f96b10 | 3533 | format_STACK_POP(const struct ofpact_stack *a, |
efefbcae | 3534 | const struct ofpact_format_params *fp) |
c2d936a4 | 3535 | { |
efefbcae | 3536 | nxm_format_stack_pop(a, fp->s); |
c2d936a4 | 3537 | } |
ae6f7530 BP |
3538 | |
3539 | static enum ofperr | |
3540 | check_STACK_PUSH(const struct ofpact_stack *a, | |
3541 | const struct ofpact_check_params *cp) | |
3542 | { | |
3543 | return nxm_stack_push_check(a, cp->match); | |
3544 | } | |
3545 | ||
3546 | static enum ofperr | |
3547 | check_STACK_POP(const struct ofpact_stack *a, | |
3548 | const struct ofpact_check_params *cp) | |
3549 | { | |
3550 | return nxm_stack_pop_check(a, cp->match); | |
3551 | } | |
c2d936a4 BP |
3552 | \f |
3553 | /* Action structure for NXAST_DEC_TTL_CNT_IDS. | |
3554 | * | |
3555 | * If the packet is not IPv4 or IPv6, does nothing. For IPv4 or IPv6, if the | |
3556 | * TTL or hop limit is at least 2, decrements it by 1. Otherwise, if TTL or | |
3557 | * hop limit is 0 or 1, sends a packet-in to the controllers with each of the | |
3558 | * 'n_controllers' controller IDs specified in 'cnt_ids'. | |
3559 | * | |
3560 | * (This differs from NXAST_DEC_TTL in that for NXAST_DEC_TTL the packet-in is | |
3561 | * sent only to controllers with id 0.) | |
3562 | */ | |
3563 | struct nx_action_cnt_ids { | |
3564 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
3565 | ovs_be16 len; /* Length including slaves. */ | |
3566 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
3567 | ovs_be16 subtype; /* NXAST_DEC_TTL_CNT_IDS. */ | |
3568 | ||
3569 | ovs_be16 n_controllers; /* Number of controllers. */ | |
3570 | uint8_t zeros[4]; /* Must be zero. */ | |
3571 | ||
3572 | /* Followed by 1 or more controller ids. | |
3573 | * | |
3574 | * uint16_t cnt_ids[]; // Controller ids. | |
3575 | * uint8_t pad[]; // Must be 0 to 8-byte align cnt_ids[]. | |
3576 | */ | |
3577 | }; | |
3578 | OFP_ASSERT(sizeof(struct nx_action_cnt_ids) == 16); | |
3579 | ||
3580 | static enum ofperr | |
3581 | decode_OFPAT_RAW_DEC_NW_TTL(struct ofpbuf *out) | |
3582 | { | |
3583 | uint16_t id = 0; | |
3584 | struct ofpact_cnt_ids *ids; | |
3585 | enum ofperr error = 0; | |
3586 | ||
3587 | ids = ofpact_put_DEC_TTL(out); | |
3588 | ids->n_controllers = 1; | |
3589 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3590 | ids = out->header; |
ce058104 | 3591 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3592 | return error; |
3593 | } | |
3594 | ||
3595 | static enum ofperr | |
3596 | decode_NXAST_RAW_DEC_TTL_CNT_IDS(const struct nx_action_cnt_ids *nac_ids, | |
f3cd3ac7 | 3597 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
3598 | struct ofpbuf *out) |
3599 | { | |
3600 | struct ofpact_cnt_ids *ids; | |
3601 | size_t ids_size; | |
3602 | int i; | |
3603 | ||
3604 | ids = ofpact_put_DEC_TTL(out); | |
3605 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; | |
3606 | ids->n_controllers = ntohs(nac_ids->n_controllers); | |
3607 | ids_size = ntohs(nac_ids->len) - sizeof *nac_ids; | |
3608 | ||
3609 | if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) { | |
3610 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
8e97815e | 3611 | } |
c2d936a4 BP |
3612 | |
3613 | if (ids_size < ids->n_controllers * sizeof(ovs_be16)) { | |
3614 | VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %"PRIuSIZE" " | |
3615 | "bytes allocated for controller ids. %"PRIuSIZE" bytes " | |
fd13c6b5 | 3616 | "are required for %u controllers.", |
c2d936a4 BP |
3617 | ids_size, ids->n_controllers * sizeof(ovs_be16), |
3618 | ids->n_controllers); | |
3619 | return OFPERR_OFPBAC_BAD_LEN; | |
3620 | } | |
3621 | ||
3622 | for (i = 0; i < ids->n_controllers; i++) { | |
3623 | uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]); | |
3624 | ofpbuf_put(out, &id, sizeof id); | |
6fd6ed71 | 3625 | ids = out->header; |
c2d936a4 BP |
3626 | } |
3627 | ||
ce058104 | 3628 | ofpact_finish_DEC_TTL(out, &ids); |
c2d936a4 BP |
3629 | |
3630 | return 0; | |
8e97815e BP |
3631 | } |
3632 | ||
c2d936a4 BP |
3633 | static void |
3634 | encode_DEC_TTL(const struct ofpact_cnt_ids *dec_ttl, | |
3635 | enum ofp_version ofp_version, struct ofpbuf *out) | |
8e97815e | 3636 | { |
c2d936a4 BP |
3637 | if (dec_ttl->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS |
3638 | || dec_ttl->n_controllers != 1 | |
3639 | || dec_ttl->cnt_ids[0] != 0) { | |
3640 | struct nx_action_cnt_ids *nac_ids = put_NXAST_DEC_TTL_CNT_IDS(out); | |
3641 | int ids_len = ROUND_UP(2 * dec_ttl->n_controllers, OFP_ACTION_ALIGN); | |
3642 | ovs_be16 *ids; | |
3643 | size_t i; | |
8e97815e | 3644 | |
c2d936a4 BP |
3645 | nac_ids->len = htons(ntohs(nac_ids->len) + ids_len); |
3646 | nac_ids->n_controllers = htons(dec_ttl->n_controllers); | |
3647 | ||
3648 | ids = ofpbuf_put_zeros(out, ids_len); | |
3649 | for (i = 0; i < dec_ttl->n_controllers; i++) { | |
3650 | ids[i] = htons(dec_ttl->cnt_ids[i]); | |
8e97815e | 3651 | } |
c2d936a4 BP |
3652 | } else { |
3653 | put_OFPAT_DEC_NW_TTL(out, ofp_version); | |
8e97815e | 3654 | } |
8e97815e BP |
3655 | } |
3656 | ||
c2d936a4 | 3657 | static void |
efefbcae | 3658 | parse_noargs_dec_ttl(const struct ofpact_parse_params *pp) |
d01c980f | 3659 | { |
c2d936a4 BP |
3660 | struct ofpact_cnt_ids *ids; |
3661 | uint16_t id = 0; | |
3662 | ||
efefbcae BP |
3663 | ofpact_put_DEC_TTL(pp->ofpacts); |
3664 | ofpbuf_put(pp->ofpacts, &id, sizeof id); | |
3665 | ids = pp->ofpacts->header; | |
c2d936a4 | 3666 | ids->n_controllers++; |
efefbcae | 3667 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
d01c980f BP |
3668 | } |
3669 | ||
cab50449 | 3670 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3671 | parse_DEC_TTL(char *arg, const struct ofpact_parse_params *pp) |
d01c980f | 3672 | { |
c2d936a4 | 3673 | if (*arg == '\0') { |
efefbcae | 3674 | parse_noargs_dec_ttl(pp); |
c2d936a4 BP |
3675 | } else { |
3676 | struct ofpact_cnt_ids *ids; | |
3677 | char *cntr; | |
3678 | ||
efefbcae | 3679 | ids = ofpact_put_DEC_TTL(pp->ofpacts); |
c2d936a4 BP |
3680 | ids->ofpact.raw = NXAST_RAW_DEC_TTL_CNT_IDS; |
3681 | for (cntr = strtok_r(arg, ", ", &arg); cntr != NULL; | |
3682 | cntr = strtok_r(NULL, ", ", &arg)) { | |
3683 | uint16_t id = atoi(cntr); | |
3684 | ||
efefbcae BP |
3685 | ofpbuf_put(pp->ofpacts, &id, sizeof id); |
3686 | ids = pp->ofpacts->header; | |
c2d936a4 BP |
3687 | ids->n_controllers++; |
3688 | } | |
3689 | if (!ids->n_controllers) { | |
3690 | return xstrdup("dec_ttl_cnt_ids: expected at least one controller " | |
3691 | "id."); | |
3692 | } | |
efefbcae | 3693 | ofpact_finish_DEC_TTL(pp->ofpacts, &ids); |
c2d936a4 BP |
3694 | } |
3695 | return NULL; | |
d01c980f BP |
3696 | } |
3697 | ||
c2d936a4 | 3698 | static void |
50f96b10 | 3699 | format_DEC_TTL(const struct ofpact_cnt_ids *a, |
efefbcae | 3700 | const struct ofpact_format_params *fp) |
d01c980f | 3701 | { |
c2d936a4 | 3702 | size_t i; |
d01c980f | 3703 | |
efefbcae | 3704 | ds_put_format(fp->s, "%sdec_ttl%s", colors.paren, colors.end); |
c2d936a4 | 3705 | if (a->ofpact.raw == NXAST_RAW_DEC_TTL_CNT_IDS) { |
efefbcae | 3706 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
c2d936a4 BP |
3707 | for (i = 0; i < a->n_controllers; i++) { |
3708 | if (i) { | |
efefbcae | 3709 | ds_put_cstr(fp->s, ","); |
d01c980f | 3710 | } |
efefbcae | 3711 | ds_put_format(fp->s, "%"PRIu16, a->cnt_ids[i]); |
c2d936a4 | 3712 | } |
efefbcae | 3713 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
d01c980f BP |
3714 | } |
3715 | } | |
ae6f7530 BP |
3716 | |
3717 | static enum ofperr | |
3718 | check_DEC_TTL(const struct ofpact_cnt_ids *a OVS_UNUSED, | |
3719 | struct ofpact_check_params *cp) | |
3720 | { | |
3721 | return check_set_ip(cp); | |
3722 | } | |
c2d936a4 BP |
3723 | \f |
3724 | /* Set MPLS label actions. */ | |
d01c980f BP |
3725 | |
3726 | static enum ofperr | |
f3cd3ac7 JS |
3727 | decode_OFPAT_RAW_SET_MPLS_LABEL(ovs_be32 label, |
3728 | enum ofp_version ofp_version OVS_UNUSED, | |
3729 | struct ofpbuf *out) | |
d01c980f | 3730 | { |
c2d936a4 BP |
3731 | ofpact_put_SET_MPLS_LABEL(out)->label = label; |
3732 | return 0; | |
3733 | } | |
d01c980f | 3734 | |
c2d936a4 BP |
3735 | static void |
3736 | encode_SET_MPLS_LABEL(const struct ofpact_mpls_label *label, | |
3737 | enum ofp_version ofp_version, | |
3738 | struct ofpbuf *out) | |
3739 | { | |
3740 | if (ofp_version < OFP12_VERSION) { | |
3741 | put_OFPAT_SET_MPLS_LABEL(out, ofp_version, label->label); | |
3742 | } else { | |
128684a6 | 3743 | put_set_field(out, ofp_version, MFF_MPLS_LABEL, ntohl(label->label)); |
d01c980f | 3744 | } |
c2d936a4 | 3745 | } |
d01c980f | 3746 | |
cab50449 | 3747 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3748 | parse_SET_MPLS_LABEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3749 | { |
efefbcae BP |
3750 | struct ofpact_mpls_label *mpls_label |
3751 | = ofpact_put_SET_MPLS_LABEL(pp->ofpacts); | |
c2d936a4 BP |
3752 | if (*arg == '\0') { |
3753 | return xstrdup("set_mpls_label: expected label."); | |
d01c980f | 3754 | } |
c2d936a4 BP |
3755 | |
3756 | mpls_label->label = htonl(atoi(arg)); | |
3757 | return NULL; | |
d01c980f BP |
3758 | } |
3759 | ||
3760 | static void | |
50f96b10 | 3761 | format_SET_MPLS_LABEL(const struct ofpact_mpls_label *a, |
efefbcae | 3762 | const struct ofpact_format_params *fp) |
d01c980f | 3763 | { |
efefbcae | 3764 | ds_put_format(fp->s, "%sset_mpls_label(%s%"PRIu32"%s)%s", |
b1c5bf1f QM |
3765 | colors.paren, colors.end, ntohl(a->label), |
3766 | colors.paren, colors.end); | |
d01c980f | 3767 | } |
ae6f7530 BP |
3768 | |
3769 | static enum ofperr | |
3770 | check_set_mpls(struct ofpact_check_params *cp) | |
3771 | { | |
3772 | ovs_be16 dl_type = get_dl_type(&cp->match->flow); | |
3773 | if (!eth_type_mpls(dl_type)) { | |
3774 | inconsistent_match(&cp->usable_protocols); | |
3775 | } | |
3776 | return 0; | |
3777 | } | |
3778 | ||
3779 | static enum ofperr | |
3780 | check_SET_MPLS_LABEL(const struct ofpact_mpls_label *a OVS_UNUSED, | |
3781 | struct ofpact_check_params *cp) | |
3782 | { | |
3783 | return check_set_mpls(cp); | |
3784 | } | |
c2d936a4 BP |
3785 | \f |
3786 | /* Set MPLS TC actions. */ | |
d01c980f | 3787 | |
c2d936a4 | 3788 | static enum ofperr |
f3cd3ac7 JS |
3789 | decode_OFPAT_RAW_SET_MPLS_TC(uint8_t tc, |
3790 | enum ofp_version ofp_version OVS_UNUSED, | |
3791 | struct ofpbuf *out) | |
d01c980f | 3792 | { |
c2d936a4 BP |
3793 | ofpact_put_SET_MPLS_TC(out)->tc = tc; |
3794 | return 0; | |
3795 | } | |
d01c980f | 3796 | |
c2d936a4 BP |
3797 | static void |
3798 | encode_SET_MPLS_TC(const struct ofpact_mpls_tc *tc, | |
3799 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3800 | { | |
3801 | if (ofp_version < OFP12_VERSION) { | |
3802 | put_OFPAT_SET_MPLS_TC(out, ofp_version, tc->tc); | |
3803 | } else { | |
128684a6 | 3804 | put_set_field(out, ofp_version, MFF_MPLS_TC, tc->tc); |
8f2cded4 | 3805 | } |
c2d936a4 | 3806 | } |
8f2cded4 | 3807 | |
cab50449 | 3808 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3809 | parse_SET_MPLS_TC(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3810 | { |
efefbcae | 3811 | struct ofpact_mpls_tc *mpls_tc = ofpact_put_SET_MPLS_TC(pp->ofpacts); |
d01c980f | 3812 | |
c2d936a4 BP |
3813 | if (*arg == '\0') { |
3814 | return xstrdup("set_mpls_tc: expected tc."); | |
d01c980f BP |
3815 | } |
3816 | ||
c2d936a4 BP |
3817 | mpls_tc->tc = atoi(arg); |
3818 | return NULL; | |
3819 | } | |
d01c980f | 3820 | |
c2d936a4 | 3821 | static void |
50f96b10 | 3822 | format_SET_MPLS_TC(const struct ofpact_mpls_tc *a, |
efefbcae | 3823 | const struct ofpact_format_params *fp) |
c2d936a4 | 3824 | { |
efefbcae | 3825 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3826 | colors.paren, colors.end, a->tc, |
3827 | colors.paren, colors.end); | |
c2d936a4 | 3828 | } |
ae6f7530 BP |
3829 | |
3830 | static enum ofperr | |
3831 | check_SET_MPLS_TC(const struct ofpact_mpls_tc *a OVS_UNUSED, | |
3832 | struct ofpact_check_params *cp) | |
3833 | { | |
3834 | return check_set_mpls(cp); | |
3835 | } | |
c2d936a4 BP |
3836 | \f |
3837 | /* Set MPLS TTL actions. */ | |
d01c980f | 3838 | |
c2d936a4 | 3839 | static enum ofperr |
f3cd3ac7 JS |
3840 | decode_OFPAT_RAW_SET_MPLS_TTL(uint8_t ttl, |
3841 | enum ofp_version ofp_version OVS_UNUSED, | |
3842 | struct ofpbuf *out) | |
c2d936a4 BP |
3843 | { |
3844 | ofpact_put_SET_MPLS_TTL(out)->ttl = ttl; | |
3845 | return 0; | |
3846 | } | |
638a19b0 | 3847 | |
c2d936a4 BP |
3848 | static void |
3849 | encode_SET_MPLS_TTL(const struct ofpact_mpls_ttl *ttl, | |
3850 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3851 | { | |
3852 | put_OFPAT_SET_MPLS_TTL(out, ofp_version, ttl->ttl); | |
3853 | } | |
638a19b0 | 3854 | |
c2d936a4 | 3855 | /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an |
efefbcae | 3856 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
3857 | * |
3858 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
3859 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 3860 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3861 | parse_SET_MPLS_TTL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 3862 | { |
efefbcae | 3863 | struct ofpact_mpls_ttl *mpls_ttl = ofpact_put_SET_MPLS_TTL(pp->ofpacts); |
d01c980f | 3864 | |
c2d936a4 BP |
3865 | if (*arg == '\0') { |
3866 | return xstrdup("set_mpls_ttl: expected ttl."); | |
b19e8793 | 3867 | } |
7fdb60a7 | 3868 | |
c2d936a4 BP |
3869 | mpls_ttl->ttl = atoi(arg); |
3870 | return NULL; | |
3871 | } | |
4cceacb9 | 3872 | |
c2d936a4 | 3873 | static void |
50f96b10 | 3874 | format_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a, |
efefbcae | 3875 | const struct ofpact_format_params *fp) |
c2d936a4 | 3876 | { |
efefbcae | 3877 | ds_put_format(fp->s, "%sset_mpls_ttl(%s%"PRIu8"%s)%s", |
b1c5bf1f QM |
3878 | colors.paren, colors.end, a->ttl, |
3879 | colors.paren, colors.end); | |
c2d936a4 | 3880 | } |
ae6f7530 BP |
3881 | |
3882 | static enum ofperr | |
3883 | check_SET_MPLS_TTL(const struct ofpact_mpls_ttl *a OVS_UNUSED, | |
3884 | struct ofpact_check_params *cp) | |
3885 | { | |
3886 | return check_set_mpls(cp); | |
3887 | } | |
c2d936a4 BP |
3888 | \f |
3889 | /* Decrement MPLS TTL actions. */ | |
4cceacb9 | 3890 | |
c2d936a4 BP |
3891 | static enum ofperr |
3892 | decode_OFPAT_RAW_DEC_MPLS_TTL(struct ofpbuf *out) | |
3893 | { | |
3894 | ofpact_put_DEC_MPLS_TTL(out); | |
3895 | return 0; | |
3896 | } | |
8dd54666 | 3897 | |
c2d936a4 BP |
3898 | static void |
3899 | encode_DEC_MPLS_TTL(const struct ofpact_null *null OVS_UNUSED, | |
3900 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3901 | { | |
3902 | put_OFPAT_DEC_MPLS_TTL(out, ofp_version); | |
3903 | } | |
3904 | ||
cab50449 | 3905 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3906 | parse_DEC_MPLS_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 3907 | { |
efefbcae | 3908 | ofpact_put_DEC_MPLS_TTL(pp->ofpacts); |
c2d936a4 BP |
3909 | return NULL; |
3910 | } | |
3911 | ||
3912 | static void | |
50f96b10 | 3913 | format_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 3914 | const struct ofpact_format_params *fp) |
c2d936a4 | 3915 | { |
efefbcae | 3916 | ds_put_format(fp->s, "%sdec_mpls_ttl%s", colors.value, colors.end); |
c2d936a4 | 3917 | } |
ae6f7530 BP |
3918 | |
3919 | static enum ofperr | |
3920 | check_DEC_MPLS_TTL(const struct ofpact_null *a OVS_UNUSED, | |
3921 | struct ofpact_check_params *cp) | |
3922 | { | |
3923 | return check_set_mpls(cp); | |
3924 | } | |
c2d936a4 BP |
3925 | \f |
3926 | /* Push MPLS label action. */ | |
3927 | ||
3928 | static enum ofperr | |
f3cd3ac7 JS |
3929 | decode_OFPAT_RAW_PUSH_MPLS(ovs_be16 ethertype, |
3930 | enum ofp_version ofp_version OVS_UNUSED, | |
3931 | struct ofpbuf *out) | |
c2d936a4 BP |
3932 | { |
3933 | struct ofpact_push_mpls *oam; | |
3934 | ||
3935 | if (!eth_type_mpls(ethertype)) { | |
3936 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8dd54666 | 3937 | } |
c2d936a4 BP |
3938 | oam = ofpact_put_PUSH_MPLS(out); |
3939 | oam->ethertype = ethertype; | |
d01c980f | 3940 | |
c2d936a4 BP |
3941 | return 0; |
3942 | } | |
3943 | ||
3944 | static void | |
3945 | encode_PUSH_MPLS(const struct ofpact_push_mpls *push_mpls, | |
3946 | enum ofp_version ofp_version, struct ofpbuf *out) | |
3947 | { | |
3948 | put_OFPAT_PUSH_MPLS(out, ofp_version, push_mpls->ethertype); | |
3949 | } | |
3950 | ||
cab50449 | 3951 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 3952 | parse_PUSH_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
3953 | { |
3954 | uint16_t ethertype; | |
3955 | char *error; | |
3956 | ||
3957 | error = str_to_u16(arg, "push_mpls", ðertype); | |
3958 | if (!error) { | |
efefbcae | 3959 | ofpact_put_PUSH_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
d01c980f BP |
3960 | } |
3961 | return error; | |
3962 | } | |
c2d936a4 BP |
3963 | |
3964 | static void | |
50f96b10 | 3965 | format_PUSH_MPLS(const struct ofpact_push_mpls *a, |
efefbcae | 3966 | const struct ofpact_format_params *fp) |
c2d936a4 | 3967 | { |
efefbcae | 3968 | ds_put_format(fp->s, "%spush_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 3969 | colors.param, colors.end, ntohs(a->ethertype)); |
c2d936a4 | 3970 | } |
ae6f7530 BP |
3971 | |
3972 | static enum ofperr | |
3973 | check_PUSH_MPLS(const struct ofpact_push_mpls *a, | |
3974 | struct ofpact_check_params *cp) | |
3975 | { | |
3976 | struct flow *flow = &cp->match->flow; | |
3977 | ||
3978 | if (flow->packet_type != htonl(PT_ETH)) { | |
3979 | inconsistent_match(&cp->usable_protocols); | |
3980 | } | |
3981 | flow->dl_type = a->ethertype; | |
3982 | ||
3983 | /* The packet is now MPLS and the MPLS payload is opaque. | |
3984 | * Thus nothing can be assumed about the network protocol. | |
3985 | * Temporarily mark that we have no nw_proto. */ | |
3986 | flow->nw_proto = 0; | |
3987 | ||
3988 | return 0; | |
3989 | } | |
d01c980f | 3990 | \f |
c2d936a4 BP |
3991 | /* Pop MPLS label action. */ |
3992 | ||
3993 | static enum ofperr | |
f3cd3ac7 JS |
3994 | decode_OFPAT_RAW_POP_MPLS(ovs_be16 ethertype, |
3995 | enum ofp_version ofp_version OVS_UNUSED, | |
3996 | struct ofpbuf *out) | |
57ad4e9e | 3997 | { |
c2d936a4 BP |
3998 | ofpact_put_POP_MPLS(out)->ethertype = ethertype; |
3999 | return 0; | |
4000 | } | |
57ad4e9e | 4001 | |
c2d936a4 BP |
4002 | static void |
4003 | encode_POP_MPLS(const struct ofpact_pop_mpls *pop_mpls, | |
4004 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4005 | { | |
4006 | put_OFPAT_POP_MPLS(out, ofp_version, pop_mpls->ethertype); | |
4007 | } | |
4008 | ||
cab50449 | 4009 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4010 | parse_POP_MPLS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
4011 | { |
4012 | uint16_t ethertype; | |
4013 | char *error; | |
4014 | ||
4015 | error = str_to_u16(arg, "pop_mpls", ðertype); | |
4016 | if (!error) { | |
efefbcae | 4017 | ofpact_put_POP_MPLS(pp->ofpacts)->ethertype = htons(ethertype); |
57ad4e9e | 4018 | } |
c2d936a4 | 4019 | return error; |
57ad4e9e BP |
4020 | } |
4021 | ||
ba2fe8e9 | 4022 | static void |
50f96b10 | 4023 | format_POP_MPLS(const struct ofpact_pop_mpls *a, |
efefbcae | 4024 | const struct ofpact_format_params *fp) |
ba2fe8e9 | 4025 | { |
efefbcae | 4026 | ds_put_format(fp->s, "%spop_mpls:%s0x%04"PRIx16, |
b1c5bf1f | 4027 | colors.param, colors.end, ntohs(a->ethertype)); |
ba2fe8e9 | 4028 | } |
ae6f7530 BP |
4029 | |
4030 | static enum ofperr | |
4031 | check_POP_MPLS(const struct ofpact_pop_mpls *a, struct ofpact_check_params *cp) | |
4032 | { | |
4033 | struct flow *flow = &cp->match->flow; | |
4034 | ovs_be16 dl_type = get_dl_type(flow); | |
4035 | ||
4036 | if (flow->packet_type != htonl(PT_ETH) || !eth_type_mpls(dl_type)) { | |
4037 | inconsistent_match(&cp->usable_protocols); | |
4038 | } | |
4039 | flow->dl_type = a->ethertype; | |
4040 | return 0; | |
4041 | } | |
c2d936a4 BP |
4042 | \f |
4043 | /* Set tunnel ID actions. */ | |
ba2fe8e9 | 4044 | |
f25d0cf3 | 4045 | static enum ofperr |
f3cd3ac7 JS |
4046 | decode_NXAST_RAW_SET_TUNNEL(uint32_t tun_id, |
4047 | enum ofp_version ofp_version OVS_UNUSED, | |
4048 | struct ofpbuf *out) | |
f25d0cf3 | 4049 | { |
c2d936a4 BP |
4050 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); |
4051 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL; | |
4052 | tunnel->tun_id = tun_id; | |
4053 | return 0; | |
4054 | } | |
f25d0cf3 | 4055 | |
c2d936a4 | 4056 | static enum ofperr |
f3cd3ac7 JS |
4057 | decode_NXAST_RAW_SET_TUNNEL64(uint64_t tun_id, |
4058 | enum ofp_version ofp_version OVS_UNUSED, | |
4059 | struct ofpbuf *out) | |
c2d936a4 BP |
4060 | { |
4061 | struct ofpact_tunnel *tunnel = ofpact_put_SET_TUNNEL(out); | |
4062 | tunnel->ofpact.raw = NXAST_RAW_SET_TUNNEL64; | |
4063 | tunnel->tun_id = tun_id; | |
4064 | return 0; | |
4065 | } | |
f25d0cf3 | 4066 | |
c2d936a4 BP |
4067 | static void |
4068 | encode_SET_TUNNEL(const struct ofpact_tunnel *tunnel, | |
4069 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4070 | { | |
4071 | uint64_t tun_id = tunnel->tun_id; | |
f25d0cf3 | 4072 | |
c2d936a4 BP |
4073 | if (ofp_version < OFP12_VERSION) { |
4074 | if (tun_id <= UINT32_MAX | |
4075 | && tunnel->ofpact.raw != NXAST_RAW_SET_TUNNEL64) { | |
4076 | put_NXAST_SET_TUNNEL(out, tun_id); | |
4077 | } else { | |
4078 | put_NXAST_SET_TUNNEL64(out, tun_id); | |
f25d0cf3 | 4079 | } |
c2d936a4 | 4080 | } else { |
128684a6 | 4081 | put_set_field(out, ofp_version, MFF_TUN_ID, tun_id); |
c2d936a4 BP |
4082 | } |
4083 | } | |
f25d0cf3 | 4084 | |
cab50449 | 4085 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
4086 | parse_set_tunnel(char *arg, enum ofp_raw_action_type raw, |
4087 | const struct ofpact_parse_params *pp) | |
c2d936a4 BP |
4088 | { |
4089 | struct ofpact_tunnel *tunnel; | |
ca287d20 | 4090 | |
efefbcae | 4091 | tunnel = ofpact_put_SET_TUNNEL(pp->ofpacts); |
c2d936a4 BP |
4092 | tunnel->ofpact.raw = raw; |
4093 | return str_to_u64(arg, &tunnel->tun_id); | |
4094 | } | |
8621547c | 4095 | |
cab50449 | 4096 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4097 | parse_SET_TUNNEL(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 4098 | { |
efefbcae | 4099 | return parse_set_tunnel(arg, NXAST_RAW_SET_TUNNEL, pp); |
c2d936a4 | 4100 | } |
8621547c | 4101 | |
c2d936a4 | 4102 | static void |
50f96b10 | 4103 | format_SET_TUNNEL(const struct ofpact_tunnel *a, |
efefbcae | 4104 | const struct ofpact_format_params *fp) |
c2d936a4 | 4105 | { |
efefbcae | 4106 | ds_put_format(fp->s, "%sset_tunnel%s:%s%#"PRIx64, colors.param, |
c2d936a4 BP |
4107 | (a->tun_id > UINT32_MAX |
4108 | || a->ofpact.raw == NXAST_RAW_SET_TUNNEL64 ? "64" : ""), | |
b1c5bf1f | 4109 | colors.end, a->tun_id); |
c2d936a4 | 4110 | } |
ae6f7530 BP |
4111 | |
4112 | static enum ofperr | |
4113 | check_SET_TUNNEL(const struct ofpact_tunnel *a OVS_UNUSED, | |
4114 | const struct ofpact_check_params *cp OVS_UNUSED) | |
4115 | { | |
4116 | return 0; | |
4117 | } | |
c2d936a4 BP |
4118 | \f |
4119 | /* Set queue action. */ | |
8621547c | 4120 | |
c2d936a4 | 4121 | static enum ofperr |
f3cd3ac7 JS |
4122 | decode_OFPAT_RAW_SET_QUEUE(uint32_t queue_id, |
4123 | enum ofp_version ofp_version OVS_UNUSED, | |
4124 | struct ofpbuf *out) | |
c2d936a4 BP |
4125 | { |
4126 | ofpact_put_SET_QUEUE(out)->queue_id = queue_id; | |
4127 | return 0; | |
4128 | } | |
8621547c | 4129 | |
c2d936a4 BP |
4130 | static void |
4131 | encode_SET_QUEUE(const struct ofpact_queue *queue, | |
4132 | enum ofp_version ofp_version, struct ofpbuf *out) | |
4133 | { | |
4134 | put_OFPAT_SET_QUEUE(out, ofp_version, queue->queue_id); | |
4135 | } | |
8621547c | 4136 | |
cab50449 | 4137 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4138 | parse_SET_QUEUE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 4139 | { |
efefbcae | 4140 | return str_to_u32(arg, &ofpact_put_SET_QUEUE(pp->ofpacts)->queue_id); |
c2d936a4 | 4141 | } |
8621547c | 4142 | |
c2d936a4 | 4143 | static void |
50f96b10 | 4144 | format_SET_QUEUE(const struct ofpact_queue *a, |
efefbcae | 4145 | const struct ofpact_format_params *fp) |
c2d936a4 | 4146 | { |
efefbcae | 4147 | ds_put_format(fp->s, "%sset_queue:%s%"PRIu32, |
b1c5bf1f | 4148 | colors.param, colors.end, a->queue_id); |
c2d936a4 | 4149 | } |
ae6f7530 BP |
4150 | |
4151 | static enum ofperr | |
4152 | check_SET_QUEUE(const struct ofpact_queue *a OVS_UNUSED, | |
4153 | const struct ofpact_check_params *cp OVS_UNUSED) | |
4154 | { | |
4155 | return 0; | |
4156 | } | |
c2d936a4 BP |
4157 | \f |
4158 | /* Pop queue action. */ | |
1e7db674 | 4159 | |
c2d936a4 BP |
4160 | static enum ofperr |
4161 | decode_NXAST_RAW_POP_QUEUE(struct ofpbuf *out) | |
4162 | { | |
4163 | ofpact_put_POP_QUEUE(out); | |
4164 | return 0; | |
4165 | } | |
f25d0cf3 | 4166 | |
c2d936a4 BP |
4167 | static void |
4168 | encode_POP_QUEUE(const struct ofpact_null *null OVS_UNUSED, | |
4169 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4170 | { | |
4171 | put_NXAST_POP_QUEUE(out); | |
4172 | } | |
f25d0cf3 | 4173 | |
cab50449 | 4174 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 4175 | parse_POP_QUEUE(const char *arg OVS_UNUSED, |
efefbcae | 4176 | const struct ofpact_parse_params *pp) |
c2d936a4 | 4177 | { |
efefbcae | 4178 | ofpact_put_POP_QUEUE(pp->ofpacts); |
c2d936a4 BP |
4179 | return NULL; |
4180 | } | |
f25d0cf3 | 4181 | |
c2d936a4 | 4182 | static void |
50f96b10 | 4183 | format_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 4184 | const struct ofpact_format_params *fp) |
c2d936a4 | 4185 | { |
efefbcae | 4186 | ds_put_format(fp->s, "%spop_queue%s", colors.value, colors.end); |
c2d936a4 | 4187 | } |
ae6f7530 BP |
4188 | |
4189 | static enum ofperr | |
4190 | check_POP_QUEUE(const struct ofpact_null *a OVS_UNUSED, | |
4191 | const struct ofpact_check_params *cp OVS_UNUSED) | |
4192 | { | |
4193 | return 0; | |
4194 | } | |
c2d936a4 BP |
4195 | \f |
4196 | /* Action structure for NXAST_FIN_TIMEOUT. | |
4197 | * | |
4198 | * This action changes the idle timeout or hard timeout, or both, of this | |
4199 | * OpenFlow rule when the rule matches a TCP packet with the FIN or RST flag. | |
4200 | * When such a packet is observed, the action reduces the rule's idle timeout | |
4201 | * to 'fin_idle_timeout' and its hard timeout to 'fin_hard_timeout'. This | |
4202 | * action has no effect on an existing timeout that is already shorter than the | |
4203 | * one that the action specifies. A 'fin_idle_timeout' or 'fin_hard_timeout' | |
4204 | * of zero has no effect on the respective timeout. | |
4205 | * | |
4206 | * 'fin_idle_timeout' and 'fin_hard_timeout' are measured in seconds. | |
4207 | * 'fin_hard_timeout' specifies time since the flow's creation, not since the | |
4208 | * receipt of the FIN or RST. | |
4209 | * | |
4210 | * This is useful for quickly discarding learned TCP flows that otherwise will | |
4211 | * take a long time to expire. | |
4212 | * | |
4213 | * This action is intended for use with an OpenFlow rule that matches only a | |
4214 | * single TCP flow. If the rule matches multiple TCP flows (e.g. it wildcards | |
4215 | * all TCP traffic, or all TCP traffic to a particular port), then any FIN or | |
4216 | * RST in any of those flows will cause the entire OpenFlow rule to expire | |
4217 | * early, which is not normally desirable. | |
4218 | */ | |
4219 | struct nx_action_fin_timeout { | |
4220 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4221 | ovs_be16 len; /* 16. */ | |
4222 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4223 | ovs_be16 subtype; /* NXAST_FIN_TIMEOUT. */ | |
4224 | ovs_be16 fin_idle_timeout; /* New idle timeout, if nonzero. */ | |
4225 | ovs_be16 fin_hard_timeout; /* New hard timeout, if nonzero. */ | |
4226 | ovs_be16 pad; /* Must be zero. */ | |
4227 | }; | |
4228 | OFP_ASSERT(sizeof(struct nx_action_fin_timeout) == 16); | |
f25d0cf3 | 4229 | |
c2d936a4 BP |
4230 | static enum ofperr |
4231 | decode_NXAST_RAW_FIN_TIMEOUT(const struct nx_action_fin_timeout *naft, | |
f3cd3ac7 | 4232 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
4233 | struct ofpbuf *out) |
4234 | { | |
4235 | struct ofpact_fin_timeout *oft; | |
8621547c | 4236 | |
c2d936a4 BP |
4237 | oft = ofpact_put_FIN_TIMEOUT(out); |
4238 | oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout); | |
4239 | oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout); | |
4240 | return 0; | |
4241 | } | |
f25d0cf3 | 4242 | |
c2d936a4 BP |
4243 | static void |
4244 | encode_FIN_TIMEOUT(const struct ofpact_fin_timeout *fin_timeout, | |
4245 | enum ofp_version ofp_version OVS_UNUSED, | |
4246 | struct ofpbuf *out) | |
4247 | { | |
4248 | struct nx_action_fin_timeout *naft = put_NXAST_FIN_TIMEOUT(out); | |
4249 | naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout); | |
4250 | naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout); | |
4251 | } | |
f25d0cf3 | 4252 | |
cab50449 | 4253 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4254 | parse_FIN_TIMEOUT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 4255 | { |
efefbcae | 4256 | struct ofpact_fin_timeout *oft = ofpact_put_FIN_TIMEOUT(pp->ofpacts); |
c2d936a4 | 4257 | char *key, *value; |
f25d0cf3 | 4258 | |
c2d936a4 BP |
4259 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
4260 | char *error; | |
b02475c5 | 4261 | |
c2d936a4 BP |
4262 | if (!strcmp(key, "idle_timeout")) { |
4263 | error = str_to_u16(value, key, &oft->fin_idle_timeout); | |
4264 | } else if (!strcmp(key, "hard_timeout")) { | |
4265 | error = str_to_u16(value, key, &oft->fin_hard_timeout); | |
4266 | } else { | |
4267 | error = xasprintf("invalid key '%s' in 'fin_timeout' argument", | |
4268 | key); | |
8621547c | 4269 | } |
8dd54666 | 4270 | |
c2d936a4 BP |
4271 | if (error) { |
4272 | return error; | |
9cae45dc | 4273 | } |
9cae45dc | 4274 | } |
c2d936a4 BP |
4275 | return NULL; |
4276 | } | |
e3b56933 | 4277 | |
c2d936a4 | 4278 | static void |
50f96b10 | 4279 | format_FIN_TIMEOUT(const struct ofpact_fin_timeout *a, |
efefbcae | 4280 | const struct ofpact_format_params *fp) |
c2d936a4 | 4281 | { |
efefbcae | 4282 | ds_put_format(fp->s, "%sfin_timeout(%s", colors.paren, colors.end); |
c2d936a4 | 4283 | if (a->fin_idle_timeout) { |
efefbcae | 4284 | ds_put_format(fp->s, "%sidle_timeout=%s%"PRIu16",", |
b1c5bf1f | 4285 | colors.param, colors.end, a->fin_idle_timeout); |
7e9f8266 | 4286 | } |
c2d936a4 | 4287 | if (a->fin_hard_timeout) { |
efefbcae | 4288 | ds_put_format(fp->s, "%shard_timeout=%s%"PRIu16",", |
b1c5bf1f | 4289 | colors.param, colors.end, a->fin_hard_timeout); |
f25d0cf3 | 4290 | } |
efefbcae BP |
4291 | ds_chomp(fp->s, ','); |
4292 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f25d0cf3 | 4293 | } |
f839892a | 4294 | |
ae6f7530 BP |
4295 | |
4296 | static enum ofperr | |
4297 | check_FIN_TIMEOUT(const struct ofpact_fin_timeout *a OVS_UNUSED, | |
4298 | struct ofpact_check_params *cp) | |
4299 | { | |
4300 | if (cp->match->flow.nw_proto != IPPROTO_TCP) { | |
4301 | inconsistent_match(&cp->usable_protocols); | |
4302 | } | |
4303 | return 0; | |
4304 | } | |
4305 | \f | |
f839892a JS |
4306 | /* Action structure for NXAST_ENCAP */ |
4307 | struct nx_action_encap { | |
4308 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4309 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4310 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4311 | ovs_be16 subtype; /* NXAST_ENCAP. */ | |
4312 | ovs_be16 hdr_size; /* Header size in bytes, 0 = 'not specified'.*/ | |
4313 | ovs_be32 new_pkt_type; /* Header type to add and PACKET_TYPE of result. */ | |
4314 | struct ofp_ed_prop_header props[]; /* Encap TLV properties. */ | |
4315 | }; | |
4316 | OFP_ASSERT(sizeof(struct nx_action_encap) == 16); | |
4317 | ||
4318 | static enum ofperr | |
4319 | decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae, | |
4320 | enum ofp_version ofp_version OVS_UNUSED, | |
4321 | struct ofpbuf *out) | |
4322 | { | |
4323 | struct ofpact_encap *encap; | |
4324 | const struct ofp_ed_prop_header *ofp_prop; | |
4325 | size_t props_len; | |
4326 | uint16_t n_props = 0; | |
4327 | int err; | |
4328 | ||
4329 | encap = ofpact_put_ENCAP(out); | |
4330 | encap->ofpact.raw = NXAST_RAW_ENCAP; | |
4331 | switch (ntohl(nae->new_pkt_type)) { | |
4332 | case PT_ETH: | |
1fc11c59 | 4333 | case PT_NSH: |
f839892a JS |
4334 | /* Add supported encap header types here. */ |
4335 | break; | |
4336 | default: | |
4337 | return OFPERR_NXBAC_BAD_HEADER_TYPE; | |
4338 | } | |
4339 | encap->new_pkt_type = nae->new_pkt_type; | |
4340 | encap->hdr_size = ntohs(nae->hdr_size); | |
4341 | ||
4342 | ofp_prop = nae->props; | |
4343 | props_len = ntohs(nae->len) - offsetof(struct nx_action_encap, props); | |
4344 | n_props = 0; | |
4345 | while (props_len > 0) { | |
4346 | err = decode_ed_prop(&ofp_prop, out, &props_len); | |
4347 | if (err) { | |
4348 | return err; | |
4349 | } | |
4350 | n_props++; | |
4351 | } | |
4352 | encap->n_props = n_props; | |
4353 | out->header = &encap->ofpact; | |
4354 | ofpact_finish_ENCAP(out, &encap); | |
4355 | ||
4356 | return 0; | |
4357 | } | |
4358 | ||
4359 | static void | |
4360 | encode_ENCAP(const struct ofpact_encap *encap, | |
4361 | enum ofp_version ofp_version OVS_UNUSED, | |
4362 | struct ofpbuf *out) | |
4363 | { | |
4364 | size_t start_ofs = out->size; | |
4365 | struct nx_action_encap *nae = put_NXAST_ENCAP(out); | |
4366 | int i; | |
4367 | ||
4368 | nae->new_pkt_type = encap->new_pkt_type; | |
4369 | nae->hdr_size = htons(encap->hdr_size); | |
4370 | const struct ofpact_ed_prop *prop = encap->props; | |
4371 | for (i = 0; i < encap->n_props; i++) { | |
4372 | encode_ed_prop(&prop, out); | |
4373 | } | |
4374 | pad_ofpat(out, start_ofs); | |
4375 | } | |
4376 | ||
4377 | static bool | |
4378 | parse_encap_header(const char *hdr, ovs_be32 *packet_type) | |
4379 | { | |
4380 | if (strcmp(hdr, "ethernet") == 0) { | |
4381 | *packet_type = htonl(PT_ETH); | |
1fc11c59 JS |
4382 | } else if (strcmp(hdr, "nsh") == 0) { |
4383 | *packet_type = htonl(PT_NSH); | |
f839892a JS |
4384 | } else { |
4385 | return false; | |
4386 | } | |
4387 | return true; | |
4388 | } | |
4389 | ||
4390 | static char * | |
4391 | parse_ed_props(const uint16_t prop_class, char **arg, int *n_props, struct ofpbuf *out) | |
4392 | { | |
4393 | char *key, *value, *err; | |
4394 | uint8_t prop_type; | |
4395 | ||
4396 | while (ofputil_parse_key_value(arg, &key, &value)) { | |
4397 | if (!parse_ed_prop_type(prop_class, key, &prop_type)) { | |
4398 | return xasprintf("Invalid property: %s", key); | |
4399 | } | |
4400 | if (value == NULL) { | |
4401 | return xasprintf("Missing the value for property: %s", key); | |
4402 | } | |
4403 | err = parse_ed_prop_value(prop_class, prop_type, value, out); | |
4404 | if (err != NULL) { | |
4405 | return err; | |
4406 | } | |
4407 | (*n_props)++; | |
4408 | } | |
4409 | return NULL; | |
4410 | } | |
4411 | ||
4412 | /* The string representation of the encap action is | |
4413 | * encap(header_type(prop=<value>,tlv(<class>,<type>,<value>),...)) | |
4414 | */ | |
4415 | ||
4416 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4417 | parse_ENCAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4418 | { |
4419 | struct ofpact_encap *encap; | |
4420 | char *key, *value, *str; | |
4421 | char *error = NULL; | |
4422 | uint16_t prop_class; | |
4423 | int n_props = 0; | |
4424 | ||
efefbcae | 4425 | encap = ofpact_put_ENCAP(pp->ofpacts); |
f839892a JS |
4426 | encap->hdr_size = 0; |
4427 | /* Parse encap header type. */ | |
4428 | str = arg; | |
4429 | if (!ofputil_parse_key_value(&arg, &key, &value)) { | |
4430 | return xasprintf("Missing encap hdr: %s", str); | |
4431 | } | |
4432 | if (!parse_encap_header(key, &encap->new_pkt_type)) { | |
4433 | return xasprintf("Encap hdr not supported: %s", value); | |
4434 | } | |
4435 | if (!parse_ed_prop_class(key, &prop_class)) { | |
4436 | return xasprintf("Invalid encap prop class: %s", key); | |
4437 | } | |
4438 | /* Parse encap properties. */ | |
efefbcae | 4439 | error = parse_ed_props(prop_class, &value, &n_props, pp->ofpacts); |
f839892a JS |
4440 | if (error != NULL) { |
4441 | return error; | |
4442 | } | |
efefbcae BP |
4443 | /* ofpbuf may have been re-allocated. */ |
4444 | encap = pp->ofpacts->header; | |
f839892a | 4445 | encap->n_props = n_props; |
efefbcae | 4446 | ofpact_finish_ENCAP(pp->ofpacts, &encap); |
f839892a JS |
4447 | return NULL; |
4448 | } | |
4449 | ||
4450 | static char * | |
4451 | format_encap_pkt_type(const ovs_be32 pkt_type) | |
4452 | { | |
4453 | switch (ntohl(pkt_type)) { | |
4454 | case PT_ETH: | |
4455 | return "ethernet"; | |
1fc11c59 JS |
4456 | case PT_NSH: |
4457 | return "nsh"; | |
f839892a JS |
4458 | default: |
4459 | return "UNKNOWN"; | |
4460 | } | |
4461 | } | |
4462 | ||
4463 | static void | |
4464 | format_ed_props(struct ds *s, uint16_t n_props, | |
4465 | const struct ofpact_ed_prop *prop) | |
4466 | { | |
4467 | const uint8_t *p = (uint8_t *) prop; | |
4468 | int i; | |
4469 | ||
4470 | if (n_props == 0) { | |
4471 | return; | |
4472 | } | |
4473 | for (i = 0; i < n_props; i++) { | |
4474 | format_ed_prop(s, prop); | |
4475 | ds_put_char(s, ','); | |
4476 | p += ROUND_UP(prop->len, 8); | |
4477 | prop = ALIGNED_CAST(const struct ofpact_ed_prop *, p); | |
4478 | } | |
4479 | if (n_props > 0) { | |
4480 | ds_chomp(s, ','); | |
4481 | } | |
4482 | } | |
4483 | ||
4484 | static void | |
4485 | format_ENCAP(const struct ofpact_encap *a, | |
efefbcae | 4486 | const struct ofpact_format_params *fp) |
f839892a | 4487 | { |
efefbcae BP |
4488 | ds_put_format(fp->s, "%sencap(%s", colors.paren, colors.end); |
4489 | ds_put_format(fp->s, "%s", format_encap_pkt_type(a->new_pkt_type)); | |
f839892a | 4490 | if (a->n_props > 0) { |
efefbcae BP |
4491 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
4492 | format_ed_props(fp->s, a->n_props, a->props); | |
4493 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
f839892a | 4494 | } |
efefbcae | 4495 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4496 | } |
4497 | ||
ae6f7530 BP |
4498 | static enum ofperr |
4499 | check_ENCAP(const struct ofpact_encap *a, struct ofpact_check_params *cp) | |
4500 | { | |
4501 | struct flow *flow = &cp->match->flow; | |
4502 | flow->packet_type = a->new_pkt_type; | |
4503 | if (pt_ns(flow->packet_type) == OFPHTN_ETHERTYPE) { | |
4504 | flow->dl_type = htons(pt_ns_type(flow->packet_type)); | |
4505 | } | |
4506 | if (!is_ip_any(flow)) { | |
4507 | flow->nw_proto = 0; | |
4508 | } | |
4509 | return 0; | |
4510 | } | |
4511 | \f | |
f839892a JS |
4512 | /* Action structure for NXAST_DECAP */ |
4513 | struct nx_action_decap { | |
4514 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4515 | ovs_be16 len; /* Total size including any property TLVs. */ | |
4516 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4517 | ovs_be16 subtype; /* NXAST_DECAP. */ | |
4518 | uint8_t pad[2]; /* 2 bytes padding */ | |
4519 | ||
4520 | /* Packet type or result. | |
4521 | * | |
4522 | * The special value (0,0xFFFE) "Use next proto" | |
4523 | * is used to request OVS to automatically set the new packet type based | |
4524 | * on the decap'ed header's next protocol. | |
4525 | */ | |
4526 | ovs_be32 new_pkt_type; | |
4527 | }; | |
4528 | OFP_ASSERT(sizeof(struct nx_action_decap) == 16); | |
4529 | ||
4530 | static enum ofperr | |
4531 | decode_NXAST_RAW_DECAP(const struct nx_action_decap *nad, | |
4532 | enum ofp_version ofp_version OVS_UNUSED, | |
4533 | struct ofpbuf *ofpacts) | |
4534 | { | |
4535 | struct ofpact_decap * decap; | |
4536 | ||
4537 | if (ntohs(nad->len) > sizeof *nad) { | |
4538 | /* No properties supported yet. */ | |
4539 | return OFPERR_NXBAC_UNKNOWN_ED_PROP; | |
4540 | } | |
4541 | ||
4542 | decap = ofpact_put_DECAP(ofpacts); | |
4543 | decap->ofpact.raw = NXAST_RAW_DECAP; | |
4544 | decap->new_pkt_type = nad->new_pkt_type; | |
4545 | return 0; | |
4546 | } | |
4547 | ||
4548 | static void | |
4549 | encode_DECAP(const struct ofpact_decap *decap, | |
4550 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4551 | { | |
4552 | struct nx_action_decap *nad = put_NXAST_DECAP(out); | |
4553 | ||
4554 | nad->len = htons(sizeof(struct nx_action_decap)); | |
4555 | nad->new_pkt_type = decap->new_pkt_type; | |
4556 | } | |
4557 | ||
4558 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4559 | parse_DECAP(char *arg, const struct ofpact_parse_params *pp) |
f839892a JS |
4560 | { |
4561 | struct ofpact_decap *decap; | |
4562 | char *key, *value, *pos; | |
4563 | char *error = NULL; | |
4564 | uint16_t ns, type; | |
4565 | ||
efefbcae | 4566 | decap = ofpact_put_DECAP(pp->ofpacts); |
f839892a JS |
4567 | /* Default next packet_type is PT_USE_NEXT_PROTO. */ |
4568 | decap->new_pkt_type = htonl(PT_USE_NEXT_PROTO); | |
4569 | ||
4570 | /* Parse decap packet_type if given. */ | |
4571 | if (ofputil_parse_key_value(&arg, &key, &value)) { | |
4572 | if (strcmp(key, "packet_type") == 0) { | |
4573 | pos = value; | |
4574 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4575 | || strcmp(key, "ns") != 0) { | |
4576 | return xstrdup("Missing packet_type attribute ns"); | |
4577 | } | |
4578 | error = str_to_u16(value, "ns", &ns); | |
4579 | if (error) { | |
4580 | return error; | |
4581 | } | |
4582 | if (ns >= OFPHTN_N_TYPES) { | |
4583 | return xasprintf("Unsupported ns value: %"PRIu16, ns); | |
4584 | } | |
4585 | if (!ofputil_parse_key_value(&pos, &key, &value) | |
4586 | || strcmp(key, "type") != 0) { | |
4587 | return xstrdup("Missing packet_type attribute type"); | |
4588 | } | |
4589 | error = str_to_u16(value, "type", &type); | |
4590 | if (error) { | |
4591 | return error; | |
4592 | } | |
4593 | decap->new_pkt_type = htonl(PACKET_TYPE(ns, type)); | |
4594 | } else { | |
4595 | return xasprintf("Invalid decap argument: %s", key); | |
4596 | } | |
4597 | } | |
4598 | return NULL; | |
4599 | } | |
4600 | ||
4601 | static void | |
4602 | format_DECAP(const struct ofpact_decap *a, | |
efefbcae | 4603 | const struct ofpact_format_params *fp) |
f839892a | 4604 | { |
efefbcae | 4605 | ds_put_format(fp->s, "%sdecap(%s", colors.paren, colors.end); |
f839892a | 4606 | if (a->new_pkt_type != htonl(PT_USE_NEXT_PROTO)) { |
efefbcae | 4607 | ds_put_format(fp->s, "packet_type(ns=%"PRIu16",id=%#"PRIx16")", |
f839892a JS |
4608 | pt_ns(a->new_pkt_type), |
4609 | pt_ns_type(a->new_pkt_type)); | |
4610 | } | |
efefbcae | 4611 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
f839892a JS |
4612 | } |
4613 | ||
ae6f7530 BP |
4614 | static enum ofperr |
4615 | check_DECAP(const struct ofpact_decap *a OVS_UNUSED, | |
4616 | struct ofpact_check_params *cp) | |
4617 | { | |
4618 | struct flow *flow = &cp->match->flow; | |
4619 | if (flow->packet_type == htonl(PT_ETH)) { | |
4620 | /* Adjust the packet_type to allow subsequent actions. */ | |
4621 | flow->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
4622 | ntohs(flow->dl_type)); | |
4623 | } else { | |
4624 | /* The actual packet_type is only known after decapsulation. | |
4625 | * Do not allow subsequent actions that depend on packet headers. */ | |
4626 | flow->packet_type = htonl(PT_UNKNOWN); | |
4627 | flow->dl_type = OVS_BE16_MAX; | |
4628 | } | |
4629 | return 0; | |
4630 | } | |
4631 | ||
491e05c2 YY |
4632 | /* Action dec_nsh_ttl */ |
4633 | ||
4634 | static enum ofperr | |
4635 | decode_NXAST_RAW_DEC_NSH_TTL(struct ofpbuf *out) | |
4636 | { | |
4637 | ofpact_put_DEC_NSH_TTL(out); | |
4638 | return 0; | |
4639 | } | |
4640 | ||
4641 | static void | |
4642 | encode_DEC_NSH_TTL(const struct ofpact_null *null OVS_UNUSED, | |
4643 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4644 | { | |
4645 | put_NXAST_DEC_NSH_TTL(out); | |
4646 | } | |
4647 | ||
4648 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 4649 | parse_DEC_NSH_TTL(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
491e05c2 | 4650 | { |
efefbcae | 4651 | ofpact_put_DEC_NSH_TTL(pp->ofpacts); |
491e05c2 YY |
4652 | return NULL; |
4653 | } | |
4654 | ||
4655 | static void | |
4656 | format_DEC_NSH_TTL(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 4657 | const struct ofpact_format_params *fp) |
491e05c2 | 4658 | { |
efefbcae | 4659 | ds_put_format(fp->s, "%sdec_nsh_ttl%s", colors.special, colors.end); |
491e05c2 YY |
4660 | } |
4661 | ||
ae6f7530 BP |
4662 | static enum ofperr |
4663 | check_DEC_NSH_TTL(const struct ofpact_null *a OVS_UNUSED, | |
4664 | struct ofpact_check_params *cp) | |
4665 | { | |
4666 | struct flow *flow = &cp->match->flow; | |
4667 | if (flow->packet_type != htonl(PT_NSH) && | |
4668 | flow->dl_type != htons(ETH_TYPE_NSH)) { | |
4669 | inconsistent_match(&cp->usable_protocols); | |
4670 | } | |
4671 | return 0; | |
4672 | } | |
c2d936a4 | 4673 | \f |
2cd20955 JR |
4674 | /* Action structures for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE, and |
4675 | * NXAST_RESUBMIT_TABLE_CT. | |
eca39bce | 4676 | * |
c2d936a4 | 4677 | * These actions search one of the switch's flow tables: |
ba2fe8e9 | 4678 | * |
2cd20955 JR |
4679 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the |
4680 | * 'table' member is not 255, then it specifies the table to search. | |
ca287d20 | 4681 | * |
2cd20955 JR |
4682 | * - Otherwise (for NXAST_RESUBMIT_TABLE or NXAST_RESUBMIT_TABLE_CT with a |
4683 | * 'table' of 255, or for NXAST_RESUBMIT regardless of 'table'), it | |
4684 | * searches the current flow table, that is, the OpenFlow flow table that | |
4685 | * contains the flow from which this action was obtained. If this action | |
4686 | * did not come from a flow table (e.g. it came from an OFPT_PACKET_OUT | |
4687 | * message), then table 0 is the current table. | |
c2d936a4 BP |
4688 | * |
4689 | * The flow table lookup uses a flow that may be slightly modified from the | |
4690 | * original lookup: | |
4691 | * | |
4692 | * - For NXAST_RESUBMIT, the 'in_port' member of struct nx_action_resubmit | |
4693 | * is used as the flow's in_port. | |
4694 | * | |
2cd20955 JR |
4695 | * - For NXAST_RESUBMIT_TABLE and NXAST_RESUBMIT_TABLE_CT, if the 'in_port' |
4696 | * member is not OFPP_IN_PORT, then its value is used as the flow's | |
4697 | * in_port. Otherwise, the original in_port is used. | |
4698 | * | |
4699 | * - For NXAST_RESUBMIT_TABLE_CT the Conntrack 5-tuple fields are used as | |
4700 | * the packets IP header fields during the lookup. | |
c2d936a4 BP |
4701 | * |
4702 | * - If actions that modify the flow (e.g. OFPAT_SET_VLAN_VID) precede the | |
4703 | * resubmit action, then the flow is updated with the new values. | |
4704 | * | |
4705 | * Following the lookup, the original in_port is restored. | |
4706 | * | |
4707 | * If the modified flow matched in the flow table, then the corresponding | |
4708 | * actions are executed. Afterward, actions following the resubmit in the | |
4709 | * original set of actions, if any, are executed; any changes made to the | |
4710 | * packet (e.g. changes to VLAN) by secondary actions persist when those | |
4711 | * actions are executed, although the original in_port is restored. | |
4712 | * | |
4713 | * Resubmit actions may be used any number of times within a set of actions. | |
4714 | * | |
790c5d26 BP |
4715 | * Resubmit actions may nest. To prevent infinite loops and excessive resource |
4716 | * use, the implementation may limit nesting depth and the total number of | |
4717 | * resubmits: | |
4718 | * | |
4719 | * - Open vSwitch 1.0.1 and earlier did not support recursion. | |
4720 | * | |
4721 | * - Open vSwitch 1.0.2 and 1.0.3 limited recursion to 8 levels. | |
4722 | * | |
4723 | * - Open vSwitch 1.1 and 1.2 limited recursion to 16 levels. | |
4724 | * | |
4725 | * - Open vSwitch 1.2 through 1.8 limited recursion to 32 levels. | |
4726 | * | |
4727 | * - Open vSwitch 1.9 through 2.0 limited recursion to 64 levels. | |
4728 | * | |
4729 | * - Open vSwitch 2.1 through 2.5 limited recursion to 64 levels and impose | |
4730 | * a total limit of 4,096 resubmits per flow translation (earlier versions | |
4731 | * did not impose any total limit). | |
c2d936a4 | 4732 | * |
2cd20955 JR |
4733 | * NXAST_RESUBMIT ignores 'table' and 'pad'. NXAST_RESUBMIT_TABLE and |
4734 | * NXAST_RESUBMIT_TABLE_CT require 'pad' to be all-bits-zero. | |
c2d936a4 BP |
4735 | * |
4736 | * Open vSwitch 1.0.1 and earlier did not support recursion. Open vSwitch | |
2cd20955 JR |
4737 | * before 1.2.90 did not support NXAST_RESUBMIT_TABLE. Open vSwitch before |
4738 | * 2.8.0 did not support NXAST_RESUBMIT_TABLE_CT. | |
c2d936a4 BP |
4739 | */ |
4740 | struct nx_action_resubmit { | |
4741 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
4742 | ovs_be16 len; /* Length is 16. */ | |
4743 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
4744 | ovs_be16 subtype; /* NXAST_RESUBMIT. */ | |
4745 | ovs_be16 in_port; /* New in_port for checking flow table. */ | |
4746 | uint8_t table; /* NXAST_RESUBMIT_TABLE: table to use. */ | |
4747 | uint8_t pad[3]; | |
4748 | }; | |
4749 | OFP_ASSERT(sizeof(struct nx_action_resubmit) == 16); | |
4750 | ||
4751 | static enum ofperr | |
f3cd3ac7 JS |
4752 | decode_NXAST_RAW_RESUBMIT(uint16_t port, |
4753 | enum ofp_version ofp_version OVS_UNUSED, | |
4754 | struct ofpbuf *out) | |
f25d0cf3 | 4755 | { |
c2d936a4 | 4756 | struct ofpact_resubmit *resubmit; |
f25d0cf3 | 4757 | |
c2d936a4 BP |
4758 | resubmit = ofpact_put_RESUBMIT(out); |
4759 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT; | |
4760 | resubmit->in_port = u16_to_ofp(port); | |
4761 | resubmit->table_id = 0xff; | |
4762 | return 0; | |
f25d0cf3 | 4763 | } |
4cceacb9 | 4764 | |
c2d936a4 BP |
4765 | static enum ofperr |
4766 | decode_NXAST_RAW_RESUBMIT_TABLE(const struct nx_action_resubmit *nar, | |
f3cd3ac7 | 4767 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 | 4768 | struct ofpbuf *out) |
ba2fe8e9 | 4769 | { |
c2d936a4 | 4770 | struct ofpact_resubmit *resubmit; |
ba2fe8e9 | 4771 | |
c2d936a4 BP |
4772 | if (nar->pad[0] || nar->pad[1] || nar->pad[2]) { |
4773 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
4774 | } | |
4775 | ||
4776 | resubmit = ofpact_put_RESUBMIT(out); | |
4777 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE; | |
4778 | resubmit->in_port = u16_to_ofp(ntohs(nar->in_port)); | |
4779 | resubmit->table_id = nar->table; | |
4780 | return 0; | |
ba2fe8e9 BP |
4781 | } |
4782 | ||
2cd20955 JR |
4783 | static enum ofperr |
4784 | decode_NXAST_RAW_RESUBMIT_TABLE_CT(const struct nx_action_resubmit *nar, | |
4785 | enum ofp_version ofp_version OVS_UNUSED, | |
4786 | struct ofpbuf *out) | |
4787 | { | |
4788 | enum ofperr error = decode_NXAST_RAW_RESUBMIT_TABLE(nar, ofp_version, out); | |
4789 | if (error) { | |
4790 | return error; | |
4791 | } | |
4792 | struct ofpact_resubmit *resubmit = out->header; | |
4793 | resubmit->ofpact.raw = NXAST_RAW_RESUBMIT_TABLE_CT; | |
4794 | resubmit->with_ct_orig = true; | |
4795 | return 0; | |
4796 | } | |
4797 | ||
c2d936a4 BP |
4798 | static void |
4799 | encode_RESUBMIT(const struct ofpact_resubmit *resubmit, | |
4800 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
4cceacb9 | 4801 | { |
c2d936a4 | 4802 | uint16_t in_port = ofp_to_u16(resubmit->in_port); |
4cceacb9 | 4803 | |
c2d936a4 | 4804 | if (resubmit->table_id == 0xff |
2cd20955 | 4805 | && resubmit->ofpact.raw == NXAST_RAW_RESUBMIT) { |
c2d936a4 BP |
4806 | put_NXAST_RESUBMIT(out, in_port); |
4807 | } else { | |
2cd20955 JR |
4808 | struct nx_action_resubmit *nar; |
4809 | nar = resubmit->with_ct_orig | |
4810 | ? put_NXAST_RESUBMIT_TABLE_CT(out) : put_NXAST_RESUBMIT_TABLE(out); | |
c2d936a4 BP |
4811 | nar->table = resubmit->table_id; |
4812 | nar->in_port = htons(in_port); | |
4813 | } | |
4814 | } | |
6813ee7c | 4815 | |
cab50449 | 4816 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 4817 | parse_RESUBMIT(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
4818 | { |
4819 | struct ofpact_resubmit *resubmit; | |
2cd20955 | 4820 | char *in_port_s, *table_s, *ct_s; |
6813ee7c | 4821 | |
efefbcae | 4822 | resubmit = ofpact_put_RESUBMIT(pp->ofpacts); |
8f2cded4 | 4823 | |
c2d936a4 BP |
4824 | in_port_s = strsep(&arg, ","); |
4825 | if (in_port_s && in_port_s[0]) { | |
efefbcae | 4826 | if (!ofputil_port_from_string(in_port_s, pp->port_map, |
50f96b10 | 4827 | &resubmit->in_port)) { |
c2d936a4 | 4828 | return xasprintf("%s: resubmit to unknown port", in_port_s); |
8f2cded4 | 4829 | } |
c2d936a4 BP |
4830 | } else { |
4831 | resubmit->in_port = OFPP_IN_PORT; | |
4832 | } | |
4cceacb9 | 4833 | |
c2d936a4 BP |
4834 | table_s = strsep(&arg, ","); |
4835 | if (table_s && table_s[0]) { | |
4bc938cc BP |
4836 | if (!ofputil_table_from_string(table_s, pp->table_map, |
4837 | &resubmit->table_id)) { | |
4838 | return xasprintf("%s: resubmit to unknown table", table_s); | |
c2d936a4 | 4839 | } |
c2d936a4 BP |
4840 | } else { |
4841 | resubmit->table_id = 255; | |
4cceacb9 JS |
4842 | } |
4843 | ||
2cd20955 JR |
4844 | ct_s = strsep(&arg, ","); |
4845 | if (ct_s && ct_s[0]) { | |
4846 | if (strcmp(ct_s, "ct")) { | |
4847 | return xasprintf("%s: unknown parameter", ct_s); | |
4848 | } | |
4849 | resubmit->with_ct_orig = true; | |
4850 | } else { | |
4851 | resubmit->with_ct_orig = false; | |
4852 | } | |
4853 | ||
c2d936a4 BP |
4854 | if (resubmit->in_port == OFPP_IN_PORT && resubmit->table_id == 255) { |
4855 | return xstrdup("at least one \"in_port\" or \"table\" must be " | |
4856 | "specified on resubmit"); | |
4857 | } | |
4858 | return NULL; | |
4859 | } | |
4860 | ||
4861 | static void | |
50f96b10 | 4862 | format_RESUBMIT(const struct ofpact_resubmit *a, |
efefbcae | 4863 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
4864 | { |
4865 | if (a->in_port != OFPP_IN_PORT && a->table_id == 255) { | |
efefbcae BP |
4866 | ds_put_format(fp->s, "%sresubmit:%s", colors.special, colors.end); |
4867 | ofputil_format_port(a->in_port, fp->port_map, fp->s); | |
c2d936a4 | 4868 | } else { |
efefbcae | 4869 | ds_put_format(fp->s, "%sresubmit(%s", colors.paren, colors.end); |
c2d936a4 | 4870 | if (a->in_port != OFPP_IN_PORT) { |
efefbcae | 4871 | ofputil_format_port(a->in_port, fp->port_map, fp->s); |
c2d936a4 | 4872 | } |
efefbcae | 4873 | ds_put_char(fp->s, ','); |
c2d936a4 | 4874 | if (a->table_id != 255) { |
4bc938cc | 4875 | ofputil_format_table(a->table_id, fp->table_map, fp->s); |
c2d936a4 | 4876 | } |
2cd20955 | 4877 | if (a->with_ct_orig) { |
efefbcae | 4878 | ds_put_cstr(fp->s, ",ct"); |
2cd20955 | 4879 | } |
efefbcae | 4880 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 BP |
4881 | } |
4882 | } | |
ae6f7530 BP |
4883 | |
4884 | static enum ofperr | |
4885 | check_RESUBMIT(const struct ofpact_resubmit *a, | |
4886 | const struct ofpact_check_params *cp) | |
4887 | { | |
4888 | if (a->with_ct_orig && !is_ct_valid(&cp->match->flow, &cp->match->wc, | |
4889 | NULL)) { | |
4890 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
4891 | } | |
4892 | return 0; | |
4893 | } | |
c2d936a4 | 4894 | \f |
4c71600d | 4895 | /* Action structure for NXAST_LEARN and NXAST_LEARN2. |
c2d936a4 BP |
4896 | * |
4897 | * This action adds or modifies a flow in an OpenFlow table, similar to | |
4898 | * OFPT_FLOW_MOD with OFPFC_MODIFY_STRICT as 'command'. The new flow has the | |
4899 | * specified idle timeout, hard timeout, priority, cookie, and flags. The new | |
4900 | * flow's match criteria and actions are built by applying each of the series | |
4901 | * of flow_mod_spec elements included as part of the action. | |
4902 | * | |
4903 | * A flow_mod_spec starts with a 16-bit header. A header that is all-bits-0 is | |
4904 | * a no-op used for padding the action as a whole to a multiple of 8 bytes in | |
4905 | * length. Otherwise, the flow_mod_spec can be thought of as copying 'n_bits' | |
4906 | * bits from a source to a destination. In this case, the header contains | |
4907 | * multiple fields: | |
4908 | * | |
4909 | * 15 14 13 12 11 10 0 | |
4910 | * +------+---+------+---------------------------------+ | |
4911 | * | 0 |src| dst | n_bits | | |
4912 | * +------+---+------+---------------------------------+ | |
4913 | * | |
4914 | * The meaning and format of a flow_mod_spec depends on 'src' and 'dst'. The | |
4915 | * following table summarizes the meaning of each possible combination. | |
4916 | * Details follow the table: | |
4917 | * | |
4918 | * src dst meaning | |
4919 | * --- --- ---------------------------------------------------------- | |
4920 | * 0 0 Add match criteria based on value in a field. | |
4921 | * 1 0 Add match criteria based on an immediate value. | |
4922 | * 0 1 Add NXAST_REG_LOAD action to copy field into a different field. | |
4923 | * 1 1 Add NXAST_REG_LOAD action to load immediate value into a field. | |
4924 | * 0 2 Add OFPAT_OUTPUT action to output to port from specified field. | |
4925 | * All other combinations are undefined and not allowed. | |
4926 | * | |
4927 | * The flow_mod_spec header is followed by a source specification and a | |
4928 | * destination specification. The format and meaning of the source | |
4929 | * specification depends on 'src': | |
4930 | * | |
4931 | * - If 'src' is 0, the source bits are taken from a field in the flow to | |
4932 | * which this action is attached. (This should be a wildcarded field. If | |
4933 | * its value is fully specified then the source bits being copied have | |
4934 | * constant values.) | |
4935 | * | |
4936 | * The source specification is an ovs_be32 'field' and an ovs_be16 'ofs'. | |
4937 | * 'field' is an nxm_header with nxm_hasmask=0, and 'ofs' the starting bit | |
4938 | * offset within that field. The source bits are field[ofs:ofs+n_bits-1]. | |
4939 | * 'field' and 'ofs' are subject to the same restrictions as the source | |
4940 | * field in NXAST_REG_MOVE. | |
4941 | * | |
4942 | * - If 'src' is 1, the source bits are a constant value. The source | |
4943 | * specification is (n_bits+15)/16*2 bytes long. Taking those bytes as a | |
4944 | * number in network order, the source bits are the 'n_bits' | |
4945 | * least-significant bits. The switch will report an error if other bits | |
4946 | * in the constant are nonzero. | |
4947 | * | |
4948 | * The flow_mod_spec destination specification, for 'dst' of 0 or 1, is an | |
4949 | * ovs_be32 'field' and an ovs_be16 'ofs'. 'field' is an nxm_header with | |
4950 | * nxm_hasmask=0 and 'ofs' is a starting bit offset within that field. The | |
4951 | * meaning of the flow_mod_spec depends on 'dst': | |
4952 | * | |
4953 | * - If 'dst' is 0, the flow_mod_spec specifies match criteria for the new | |
4954 | * flow. The new flow matches only if bits field[ofs:ofs+n_bits-1] in a | |
4955 | * packet equal the source bits. 'field' may be any nxm_header with | |
4956 | * nxm_hasmask=0 that is allowed in NXT_FLOW_MOD. | |
4957 | * | |
4958 | * Order is significant. Earlier flow_mod_specs must satisfy any | |
4959 | * prerequisites for matching fields specified later, by copying constant | |
4960 | * values into prerequisite fields. | |
4961 | * | |
4962 | * The switch will reject flow_mod_specs that do not satisfy NXM masking | |
4963 | * restrictions. | |
4964 | * | |
4965 | * - If 'dst' is 1, the flow_mod_spec specifies an NXAST_REG_LOAD action for | |
4966 | * the new flow. The new flow copies the source bits into | |
4967 | * field[ofs:ofs+n_bits-1]. Actions are executed in the same order as the | |
4968 | * flow_mod_specs. | |
4969 | * | |
4970 | * A single NXAST_REG_LOAD action writes no more than 64 bits, so n_bits | |
4971 | * greater than 64 yields multiple NXAST_REG_LOAD actions. | |
4972 | * | |
4973 | * The flow_mod_spec destination spec for 'dst' of 2 (when 'src' is 0) is | |
4974 | * empty. It has the following meaning: | |
4975 | * | |
4976 | * - The flow_mod_spec specifies an OFPAT_OUTPUT action for the new flow. | |
4977 | * The new flow outputs to the OpenFlow port specified by the source field. | |
4978 | * Of the special output ports with value OFPP_MAX or larger, OFPP_IN_PORT, | |
4979 | * OFPP_FLOOD, OFPP_LOCAL, and OFPP_ALL are supported. Other special ports | |
4980 | * may not be used. | |
4981 | * | |
4982 | * Resource Management | |
4983 | * ------------------- | |
4984 | * | |
4985 | * A switch has a finite amount of flow table space available for learning. | |
4986 | * When this space is exhausted, no new learning table entries will be learned | |
4987 | * until some existing flow table entries expire. The controller should be | |
4988 | * prepared to handle this by flooding (which can be implemented as a | |
4989 | * low-priority flow). | |
4990 | * | |
4991 | * If a learned flow matches a single TCP stream with a relatively long | |
4992 | * timeout, one may make the best of resource constraints by setting | |
4993 | * 'fin_idle_timeout' or 'fin_hard_timeout' (both measured in seconds), or | |
4994 | * both, to shorter timeouts. When either of these is specified as a nonzero | |
4995 | * value, OVS adds a NXAST_FIN_TIMEOUT action, with the specified timeouts, to | |
4996 | * the learned flow. | |
4997 | * | |
4998 | * Examples | |
4999 | * -------- | |
5000 | * | |
5001 | * The following examples give a prose description of the flow_mod_specs along | |
5002 | * with informal notation for how those would be represented and a hex dump of | |
5003 | * the bytes that would be required. | |
5004 | * | |
5005 | * These examples could work with various nx_action_learn parameters. Typical | |
5006 | * values would be idle_timeout=OFP_FLOW_PERMANENT, hard_timeout=60, | |
5007 | * priority=OFP_DEFAULT_PRIORITY, flags=0, table_id=10. | |
5008 | * | |
5009 | * 1. Learn input port based on the source MAC, with lookup into | |
5010 | * NXM_NX_REG1[16:31] by resubmit to in_port=99: | |
5011 | * | |
5012 | * Match on in_port=99: | |
5013 | * ovs_be16(src=1, dst=0, n_bits=16), 20 10 | |
5014 | * ovs_be16(99), 00 63 | |
5015 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
5016 | * | |
5017 | * Match Ethernet destination on Ethernet source from packet: | |
5018 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
5019 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
5020 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
5021 | * | |
5022 | * Set NXM_NX_REG1[16:31] to the packet's input port: | |
5023 | * ovs_be16(src=0, dst=1, n_bits=16), 08 10 | |
5024 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
5025 | * ovs_be32(NXM_NX_REG1), ovs_be16(16) 00 01 02 04 00 10 | |
5026 | * | |
5027 | * Given a packet that arrived on port A with Ethernet source address B, | |
5028 | * this would set up the flow "in_port=99, dl_dst=B, | |
5029 | * actions=load:A->NXM_NX_REG1[16..31]". | |
5030 | * | |
5031 | * In syntax accepted by ovs-ofctl, this action is: learn(in_port=99, | |
5032 | * NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
5033 | * load:NXM_OF_IN_PORT[]->NXM_NX_REG1[16..31]) | |
5034 | * | |
5035 | * 2. Output to input port based on the source MAC and VLAN VID, with lookup | |
5036 | * into NXM_NX_REG1[16:31]: | |
5037 | * | |
5038 | * Match on same VLAN ID as packet: | |
5039 | * ovs_be16(src=0, dst=0, n_bits=12), 00 0c | |
5040 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
5041 | * ovs_be32(NXM_OF_VLAN_TCI), ovs_be16(0) 00 00 08 02 00 00 | |
5042 | * | |
5043 | * Match Ethernet destination on Ethernet source from packet: | |
5044 | * ovs_be16(src=0, dst=0, n_bits=48), 00 30 | |
5045 | * ovs_be32(NXM_OF_ETH_SRC), ovs_be16(0) 00 00 04 06 00 00 | |
5046 | * ovs_be32(NXM_OF_ETH_DST), ovs_be16(0) 00 00 02 06 00 00 | |
5047 | * | |
5048 | * Output to the packet's input port: | |
5049 | * ovs_be16(src=0, dst=2, n_bits=16), 10 10 | |
5050 | * ovs_be32(NXM_OF_IN_PORT), ovs_be16(0) 00 00 00 02 00 00 | |
5051 | * | |
5052 | * Given a packet that arrived on port A with Ethernet source address B in | |
5053 | * VLAN C, this would set up the flow "dl_dst=B, vlan_vid=C, | |
5054 | * actions=output:A". | |
5055 | * | |
5056 | * In syntax accepted by ovs-ofctl, this action is: | |
5057 | * learn(NXM_OF_VLAN_TCI[0..11], NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], | |
5058 | * output:NXM_OF_IN_PORT[]) | |
5059 | * | |
5060 | * 3. Here's a recipe for a very simple-minded MAC learning switch. It uses a | |
5061 | * 10-second MAC expiration time to make it easier to see what's going on | |
5062 | * | |
5063 | * ovs-vsctl del-controller br0 | |
5064 | * ovs-ofctl del-flows br0 | |
5065 | * ovs-ofctl add-flow br0 "table=0 actions=learn(table=1, \ | |
5066 | hard_timeout=10, NXM_OF_VLAN_TCI[0..11], \ | |
5067 | NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[], \ | |
5068 | output:NXM_OF_IN_PORT[]), resubmit(,1)" | |
5069 | * ovs-ofctl add-flow br0 "table=1 priority=0 actions=flood" | |
5070 | * | |
5071 | * You can then dump the MAC learning table with: | |
5072 | * | |
5073 | * ovs-ofctl dump-flows br0 table=1 | |
5074 | * | |
5075 | * Usage Advice | |
5076 | * ------------ | |
5077 | * | |
5078 | * For best performance, segregate learned flows into a table that is not used | |
5079 | * for any other flows except possibly for a lowest-priority "catch-all" flow | |
5080 | * (a flow with no match criteria). If different learning actions specify | |
5081 | * different match criteria, use different tables for the learned flows. | |
5082 | * | |
5083 | * The meaning of 'hard_timeout' and 'idle_timeout' can be counterintuitive. | |
5084 | * These timeouts apply to the flow that is added, which means that a flow with | |
5085 | * an idle timeout will expire when no traffic has been sent *to* the learned | |
5086 | * address. This is not usually the intent in MAC learning; instead, we want | |
5087 | * the MAC learn entry to expire when no traffic has been sent *from* the | |
5088 | * learned address. Use a hard timeout for that. | |
39c94593 JR |
5089 | * |
5090 | * | |
5091 | * Visibility of Changes | |
5092 | * --------------------- | |
5093 | * | |
5094 | * Prior to Open vSwitch 2.4, any changes made by a "learn" action in a given | |
5095 | * flow translation are visible to flow table lookups made later in the flow | |
5096 | * translation. This means that, in the example above, a MAC learned by the | |
5097 | * learn action in table 0 would be found in table 1 (if the packet being | |
5098 | * processed had the same source and destination MAC address). | |
5099 | * | |
5100 | * In Open vSwitch 2.4 and later, changes to a flow table (whether to add or | |
5101 | * modify a flow) by a "learn" action are visible only for later flow | |
5102 | * translations, not for later lookups within the same flow translation. In | |
5103 | * the MAC learning example, a MAC learned by the learn action in table 0 would | |
5104 | * not be found in table 1 if the flow translation would resubmit to table 1 | |
5105 | * after the processing of the learn action, meaning that if this MAC had not | |
5106 | * been learned before then the packet would be flooded. */ | |
c2d936a4 BP |
5107 | struct nx_action_learn { |
5108 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5109 | ovs_be16 len; /* At least 24. */ | |
5110 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5111 | ovs_be16 subtype; /* NXAST_LEARN. */ | |
5112 | ovs_be16 idle_timeout; /* Idle time before discarding (seconds). */ | |
5113 | ovs_be16 hard_timeout; /* Max time before discarding (seconds). */ | |
5114 | ovs_be16 priority; /* Priority level of flow entry. */ | |
5115 | ovs_be64 cookie; /* Cookie for new flow. */ | |
5116 | ovs_be16 flags; /* NX_LEARN_F_*. */ | |
5117 | uint8_t table_id; /* Table to insert flow entry. */ | |
5118 | uint8_t pad; /* Must be zero. */ | |
5119 | ovs_be16 fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */ | |
5120 | ovs_be16 fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */ | |
5121 | /* Followed by a sequence of flow_mod_spec elements, as described above, | |
5122 | * until the end of the action is reached. */ | |
5123 | }; | |
5124 | OFP_ASSERT(sizeof(struct nx_action_learn) == 32); | |
5125 | ||
4c71600d DDP |
5126 | struct nx_action_learn2 { |
5127 | struct nx_action_learn up; /* The wire format includes nx_action_learn. */ | |
1746822c JS |
5128 | ovs_be32 limit; /* Maximum number of learned flows. |
5129 | * 0 indicates unlimited. */ | |
4c71600d DDP |
5130 | |
5131 | /* Where to store the result. */ | |
5132 | ovs_be16 result_dst_ofs; /* Starting bit offset in destination. */ | |
5133 | ||
5134 | ovs_be16 pad2; /* Must be zero. */ | |
5135 | /* Followed by: | |
5136 | * - OXM/NXM header for destination field (4 or 8 bytes), | |
5137 | * if NX_LEARN_F_WRITE_RESULT is set in 'flags' | |
5138 | * - a sequence of flow_mod_spec elements, as described above, | |
5139 | * until the end of the action is reached. */ | |
5140 | }; | |
5141 | OFP_ASSERT(sizeof(struct nx_action_learn2) == 40); | |
5142 | ||
c2d936a4 BP |
5143 | static ovs_be16 |
5144 | get_be16(const void **pp) | |
5145 | { | |
5146 | const ovs_be16 *p = *pp; | |
5147 | ovs_be16 value = *p; | |
5148 | *pp = p + 1; | |
5149 | return value; | |
5150 | } | |
5151 | ||
5152 | static ovs_be32 | |
5153 | get_be32(const void **pp) | |
5154 | { | |
5155 | const ovs_be32 *p = *pp; | |
5156 | ovs_be32 value = get_unaligned_be32(p); | |
5157 | *pp = p + 1; | |
5158 | return value; | |
5159 | } | |
5160 | ||
04f48a68 YHW |
5161 | static enum ofperr |
5162 | get_subfield(int n_bits, const void **p, struct mf_subfield *sf, | |
5c7c16d8 | 5163 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
c2d936a4 | 5164 | { |
5c7c16d8 YHW |
5165 | enum ofperr error; |
5166 | ||
5167 | error = mf_vl_mff_mf_from_nxm_header(ntohl(get_be32(p)), vl_mff_map, | |
5168 | &sf->field, tlv_bitmap); | |
c2d936a4 BP |
5169 | sf->ofs = ntohs(get_be16(p)); |
5170 | sf->n_bits = n_bits; | |
5c7c16d8 | 5171 | return error; |
c2d936a4 BP |
5172 | } |
5173 | ||
5174 | static unsigned int | |
5175 | learn_min_len(uint16_t header) | |
5176 | { | |
5177 | int n_bits = header & NX_LEARN_N_BITS_MASK; | |
5178 | int src_type = header & NX_LEARN_SRC_MASK; | |
5179 | int dst_type = header & NX_LEARN_DST_MASK; | |
5180 | unsigned int min_len; | |
5181 | ||
5182 | min_len = 0; | |
5183 | if (src_type == NX_LEARN_SRC_FIELD) { | |
5184 | min_len += sizeof(ovs_be32); /* src_field */ | |
5185 | min_len += sizeof(ovs_be16); /* src_ofs */ | |
5186 | } else { | |
bc759a2c | 5187 | min_len += 2 * DIV_ROUND_UP(n_bits, 16); |
c2d936a4 BP |
5188 | } |
5189 | if (dst_type == NX_LEARN_DST_MATCH || | |
5190 | dst_type == NX_LEARN_DST_LOAD) { | |
5191 | min_len += sizeof(ovs_be32); /* dst_field */ | |
5192 | min_len += sizeof(ovs_be16); /* dst_ofs */ | |
5193 | } | |
5194 | return min_len; | |
5195 | } | |
5196 | ||
c2d936a4 | 5197 | static enum ofperr |
2ce5f311 | 5198 | decode_LEARN_common(const struct nx_action_learn *nal, |
a9fedc78 | 5199 | enum ofp_raw_action_type raw, |
2ce5f311 | 5200 | struct ofpact_learn *learn) |
c2d936a4 | 5201 | { |
c2d936a4 BP |
5202 | if (nal->pad) { |
5203 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5204 | } | |
5205 | ||
a9fedc78 | 5206 | learn->ofpact.raw = raw; |
c2d936a4 BP |
5207 | learn->idle_timeout = ntohs(nal->idle_timeout); |
5208 | learn->hard_timeout = ntohs(nal->hard_timeout); | |
5209 | learn->priority = ntohs(nal->priority); | |
5210 | learn->cookie = nal->cookie; | |
5211 | learn->table_id = nal->table_id; | |
5212 | learn->fin_idle_timeout = ntohs(nal->fin_idle_timeout); | |
5213 | learn->fin_hard_timeout = ntohs(nal->fin_hard_timeout); | |
c2d936a4 | 5214 | learn->flags = ntohs(nal->flags); |
c2d936a4 BP |
5215 | |
5216 | if (learn->table_id == 0xff) { | |
5217 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5218 | } | |
5219 | ||
2ce5f311 DDP |
5220 | return 0; |
5221 | } | |
5222 | ||
5223 | static enum ofperr | |
5224 | decode_LEARN_specs(const void *p, const void *end, | |
5225 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, | |
5226 | struct ofpbuf *ofpacts) | |
5227 | { | |
5228 | struct ofpact_learn *learn = ofpacts->header; | |
5229 | ||
5230 | while (p != end) { | |
c2d936a4 BP |
5231 | struct ofpact_learn_spec *spec; |
5232 | uint16_t header = ntohs(get_be16(&p)); | |
5233 | ||
5234 | if (!header) { | |
5235 | break; | |
5236 | } | |
5237 | ||
5238 | spec = ofpbuf_put_zeros(ofpacts, sizeof *spec); | |
6fd6ed71 | 5239 | learn = ofpacts->header; |
c2d936a4 BP |
5240 | |
5241 | spec->src_type = header & NX_LEARN_SRC_MASK; | |
5242 | spec->dst_type = header & NX_LEARN_DST_MASK; | |
5243 | spec->n_bits = header & NX_LEARN_N_BITS_MASK; | |
5244 | ||
5245 | /* Check for valid src and dst type combination. */ | |
5246 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5247 | spec->dst_type == NX_LEARN_DST_LOAD || | |
5248 | (spec->dst_type == NX_LEARN_DST_OUTPUT && | |
5249 | spec->src_type == NX_LEARN_SRC_FIELD)) { | |
5250 | /* OK. */ | |
5251 | } else { | |
5252 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5253 | } | |
5254 | ||
5255 | /* Check that the arguments don't overrun the end of the action. */ | |
5256 | if ((char *) end - (char *) p < learn_min_len(header)) { | |
5257 | return OFPERR_OFPBAC_BAD_LEN; | |
5258 | } | |
5259 | ||
5260 | /* Get the source. */ | |
dfe191d5 JR |
5261 | const uint8_t *imm = NULL; |
5262 | unsigned int imm_bytes = 0; | |
04f48a68 | 5263 | enum ofperr error; |
c2d936a4 | 5264 | if (spec->src_type == NX_LEARN_SRC_FIELD) { |
5c7c16d8 YHW |
5265 | error = get_subfield(spec->n_bits, &p, &spec->src, vl_mff_map, |
5266 | tlv_bitmap); | |
04f48a68 YHW |
5267 | if (error) { |
5268 | return error; | |
5269 | } | |
c2d936a4 BP |
5270 | } else { |
5271 | int p_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
c2d936a4 | 5272 | p = (const uint8_t *) p + p_bytes; |
dfe191d5 JR |
5273 | |
5274 | imm_bytes = DIV_ROUND_UP(spec->n_bits, 8); | |
5275 | imm = (const uint8_t *) p - imm_bytes; | |
c2d936a4 BP |
5276 | } |
5277 | ||
5278 | /* Get the destination. */ | |
5279 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5280 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
5c7c16d8 YHW |
5281 | error = get_subfield(spec->n_bits, &p, &spec->dst, vl_mff_map, |
5282 | tlv_bitmap); | |
04f48a68 YHW |
5283 | if (error) { |
5284 | return error; | |
5285 | } | |
c2d936a4 | 5286 | } |
dfe191d5 JR |
5287 | |
5288 | if (imm) { | |
5289 | uint8_t *src_imm = ofpbuf_put_zeros(ofpacts, | |
5290 | OFPACT_ALIGN(imm_bytes)); | |
5291 | memcpy(src_imm, imm, imm_bytes); | |
5292 | ||
5293 | learn = ofpacts->header; | |
5294 | } | |
c2d936a4 | 5295 | } |
ce058104 | 5296 | ofpact_finish_LEARN(ofpacts, &learn); |
c2d936a4 BP |
5297 | |
5298 | if (!is_all_zeros(p, (char *) end - (char *) p)) { | |
5299 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5300 | } | |
5301 | ||
5302 | return 0; | |
5303 | } | |
5304 | ||
2ce5f311 DDP |
5305 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
5306 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
5307 | static enum ofperr | |
5308 | decode_NXAST_RAW_LEARN(const struct nx_action_learn *nal, | |
5309 | enum ofp_version ofp_version OVS_UNUSED, | |
5310 | const struct vl_mff_map *vl_mff_map, | |
5311 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
5312 | { | |
5313 | struct ofpact_learn *learn; | |
5314 | enum ofperr error; | |
5315 | ||
5316 | learn = ofpact_put_LEARN(ofpacts); | |
5317 | ||
a9fedc78 | 5318 | error = decode_LEARN_common(nal, NXAST_RAW_LEARN, learn); |
2ce5f311 DDP |
5319 | if (error) { |
5320 | return error; | |
5321 | } | |
5322 | ||
5323 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
5324 | NX_LEARN_F_DELETE_LEARNED)) { | |
5325 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5326 | } | |
5327 | ||
5328 | return decode_LEARN_specs(nal + 1, (char *) nal + ntohs(nal->len), | |
5329 | vl_mff_map, tlv_bitmap, ofpacts); | |
5330 | } | |
5331 | ||
4c71600d DDP |
5332 | /* Converts 'nal' into a "struct ofpact_learn" and appends that struct to |
5333 | * 'ofpacts'. Returns 0 if successful, otherwise an OFPERR_*. */ | |
5334 | static enum ofperr | |
5335 | decode_NXAST_RAW_LEARN2(const struct nx_action_learn2 *nal, | |
5336 | enum ofp_version ofp_version OVS_UNUSED, | |
5337 | const struct vl_mff_map *vl_mff_map, | |
5338 | uint64_t *tlv_bitmap, struct ofpbuf *ofpacts) | |
5339 | { | |
5340 | struct ofpbuf b = ofpbuf_const_initializer(nal, ntohs(nal->up.len)); | |
5341 | struct ofpact_learn *learn; | |
5342 | enum ofperr error; | |
5343 | ||
5344 | if (nal->pad2) { | |
5345 | return OFPERR_NXBAC_MUST_BE_ZERO; | |
5346 | } | |
5347 | ||
5348 | learn = ofpact_put_LEARN(ofpacts); | |
a9fedc78 | 5349 | error = decode_LEARN_common(&nal->up, NXAST_RAW_LEARN2, learn); |
4c71600d DDP |
5350 | if (error) { |
5351 | return error; | |
5352 | } | |
5353 | ||
5354 | learn->limit = ntohl(nal->limit); | |
5355 | ||
5356 | if (learn->flags & ~(NX_LEARN_F_SEND_FLOW_REM | | |
5357 | NX_LEARN_F_DELETE_LEARNED | | |
5358 | NX_LEARN_F_WRITE_RESULT)) { | |
5359 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5360 | } | |
5361 | ||
5362 | ofpbuf_pull(&b, sizeof *nal); | |
5363 | ||
5364 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
5365 | error = nx_pull_header(&b, vl_mff_map, &learn->result_dst.field, NULL); | |
5366 | if (error) { | |
5367 | return error; | |
5368 | } | |
5369 | if (!learn->result_dst.field->writable) { | |
5370 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
5371 | } | |
5372 | learn->result_dst.ofs = ntohs(nal->result_dst_ofs); | |
5373 | learn->result_dst.n_bits = 1; | |
5374 | } else if (nal->result_dst_ofs) { | |
5375 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5376 | } | |
5377 | ||
5378 | return decode_LEARN_specs(b.data, (char *) nal + ntohs(nal->up.len), | |
5379 | vl_mff_map, tlv_bitmap, ofpacts); | |
5380 | } | |
5381 | ||
c2d936a4 BP |
5382 | static void |
5383 | put_be16(struct ofpbuf *b, ovs_be16 x) | |
5384 | { | |
5385 | ofpbuf_put(b, &x, sizeof x); | |
5386 | } | |
5387 | ||
5388 | static void | |
5389 | put_be32(struct ofpbuf *b, ovs_be32 x) | |
5390 | { | |
5391 | ofpbuf_put(b, &x, sizeof x); | |
5392 | } | |
5393 | ||
5394 | static void | |
5395 | put_u16(struct ofpbuf *b, uint16_t x) | |
5396 | { | |
5397 | put_be16(b, htons(x)); | |
5398 | } | |
5399 | ||
5400 | static void | |
5401 | put_u32(struct ofpbuf *b, uint32_t x) | |
5402 | { | |
5403 | put_be32(b, htonl(x)); | |
5404 | } | |
5405 | ||
5406 | static void | |
5407 | encode_LEARN(const struct ofpact_learn *learn, | |
5408 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5409 | { | |
5410 | const struct ofpact_learn_spec *spec; | |
5411 | struct nx_action_learn *nal; | |
5412 | size_t start_ofs; | |
5413 | ||
6fd6ed71 | 5414 | start_ofs = out->size; |
4c71600d DDP |
5415 | |
5416 | if (learn->ofpact.raw == NXAST_RAW_LEARN2 | |
5417 | || learn->limit != 0 | |
5418 | || learn->flags & NX_LEARN_F_WRITE_RESULT) { | |
5419 | struct nx_action_learn2 *nal2; | |
5420 | ||
5421 | nal2 = put_NXAST_LEARN2(out); | |
5422 | nal2->limit = htonl(learn->limit); | |
5423 | nal2->result_dst_ofs = htons(learn->result_dst.ofs); | |
5424 | nal = &nal2->up; | |
5425 | } else { | |
5426 | nal = put_NXAST_LEARN(out); | |
5427 | } | |
c2d936a4 BP |
5428 | nal->idle_timeout = htons(learn->idle_timeout); |
5429 | nal->hard_timeout = htons(learn->hard_timeout); | |
5430 | nal->fin_idle_timeout = htons(learn->fin_idle_timeout); | |
5431 | nal->fin_hard_timeout = htons(learn->fin_hard_timeout); | |
5432 | nal->priority = htons(learn->priority); | |
5433 | nal->cookie = learn->cookie; | |
5434 | nal->flags = htons(learn->flags); | |
5435 | nal->table_id = learn->table_id; | |
5436 | ||
4c71600d DDP |
5437 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
5438 | nx_put_header(out, learn->result_dst.field->id, 0, false); | |
5439 | } | |
5440 | ||
c65a31e2 | 5441 | OFPACT_LEARN_SPEC_FOR_EACH (spec, learn) { |
c2d936a4 BP |
5442 | put_u16(out, spec->n_bits | spec->dst_type | spec->src_type); |
5443 | ||
5444 | if (spec->src_type == NX_LEARN_SRC_FIELD) { | |
04f48a68 | 5445 | put_u32(out, nxm_header_from_mff(spec->src.field)); |
c2d936a4 BP |
5446 | put_u16(out, spec->src.ofs); |
5447 | } else { | |
5448 | size_t n_dst_bytes = 2 * DIV_ROUND_UP(spec->n_bits, 16); | |
5449 | uint8_t *bits = ofpbuf_put_zeros(out, n_dst_bytes); | |
507a9a16 | 5450 | unsigned int n_bytes = DIV_ROUND_UP(spec->n_bits, 8); |
dfe191d5 | 5451 | |
507a9a16 JR |
5452 | memcpy(bits + n_dst_bytes - n_bytes, ofpact_learn_spec_imm(spec), |
5453 | n_bytes); | |
c2d936a4 BP |
5454 | } |
5455 | ||
5456 | if (spec->dst_type == NX_LEARN_DST_MATCH || | |
5457 | spec->dst_type == NX_LEARN_DST_LOAD) { | |
04f48a68 | 5458 | put_u32(out, nxm_header_from_mff(spec->dst.field)); |
c2d936a4 BP |
5459 | put_u16(out, spec->dst.ofs); |
5460 | } | |
5461 | } | |
5462 | ||
178742f9 | 5463 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5464 | } |
5465 | ||
cab50449 | 5466 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5467 | parse_LEARN(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5468 | { |
4bc938cc | 5469 | return learn_parse(arg, pp->port_map, pp->table_map, pp->ofpacts); |
c2d936a4 BP |
5470 | } |
5471 | ||
5472 | static void | |
50f96b10 | 5473 | format_LEARN(const struct ofpact_learn *a, |
efefbcae | 5474 | const struct ofpact_format_params *fp) |
c2d936a4 | 5475 | { |
4bc938cc | 5476 | learn_format(a, fp->port_map, fp->table_map, fp->s); |
c2d936a4 | 5477 | } |
ae6f7530 BP |
5478 | |
5479 | static enum ofperr | |
5480 | check_LEARN(const struct ofpact_learn *a, | |
5481 | const struct ofpact_check_params *cp) | |
5482 | { | |
5483 | return learn_check(a, cp->match); | |
5484 | } | |
c2d936a4 | 5485 | \f |
18080541 BP |
5486 | /* Action structure for NXAST_CONJUNCTION. */ |
5487 | struct nx_action_conjunction { | |
5488 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5489 | ovs_be16 len; /* At least 16. */ | |
5490 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5491 | ovs_be16 subtype; /* See enum ofp_raw_action_type. */ | |
5492 | uint8_t clause; | |
5493 | uint8_t n_clauses; | |
5494 | ovs_be32 id; | |
5495 | }; | |
5496 | OFP_ASSERT(sizeof(struct nx_action_conjunction) == 16); | |
5497 | ||
5498 | static void | |
5499 | add_conjunction(struct ofpbuf *out, | |
5500 | uint32_t id, uint8_t clause, uint8_t n_clauses) | |
5501 | { | |
5502 | struct ofpact_conjunction *oc; | |
5503 | ||
5504 | oc = ofpact_put_CONJUNCTION(out); | |
5505 | oc->id = id; | |
5506 | oc->clause = clause; | |
5507 | oc->n_clauses = n_clauses; | |
5508 | } | |
5509 | ||
5510 | static enum ofperr | |
5511 | decode_NXAST_RAW_CONJUNCTION(const struct nx_action_conjunction *nac, | |
f3cd3ac7 | 5512 | enum ofp_version ofp_version OVS_UNUSED, |
18080541 BP |
5513 | struct ofpbuf *out) |
5514 | { | |
5515 | if (nac->n_clauses < 2 || nac->n_clauses > 64 | |
5516 | || nac->clause >= nac->n_clauses) { | |
5517 | return OFPERR_NXBAC_BAD_CONJUNCTION; | |
5518 | } else { | |
5519 | add_conjunction(out, ntohl(nac->id), nac->clause, nac->n_clauses); | |
5520 | return 0; | |
5521 | } | |
5522 | } | |
5523 | ||
5524 | static void | |
5525 | encode_CONJUNCTION(const struct ofpact_conjunction *oc, | |
5526 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5527 | { | |
5528 | struct nx_action_conjunction *nac = put_NXAST_CONJUNCTION(out); | |
5529 | nac->clause = oc->clause; | |
5530 | nac->n_clauses = oc->n_clauses; | |
5531 | nac->id = htonl(oc->id); | |
5532 | } | |
5533 | ||
5534 | static void | |
50f96b10 | 5535 | format_CONJUNCTION(const struct ofpact_conjunction *oc, |
efefbcae | 5536 | const struct ofpact_format_params *fp) |
18080541 | 5537 | { |
efefbcae | 5538 | ds_put_format(fp->s, "%sconjunction(%s%"PRIu32",%d/%"PRIu8"%s)%s", |
b1c5bf1f QM |
5539 | colors.paren, colors.end, |
5540 | oc->id, oc->clause + 1, oc->n_clauses, | |
5541 | colors.paren, colors.end); | |
18080541 BP |
5542 | } |
5543 | ||
5544 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5545 | parse_CONJUNCTION(const char *arg, const struct ofpact_parse_params *pp) |
18080541 BP |
5546 | { |
5547 | uint8_t n_clauses; | |
5548 | uint8_t clause; | |
5549 | uint32_t id; | |
5550 | int n; | |
5551 | ||
5552 | if (!ovs_scan(arg, "%"SCNi32" , %"SCNu8" / %"SCNu8" %n", | |
5553 | &id, &clause, &n_clauses, &n) || n != strlen(arg)) { | |
5554 | return xstrdup("\"conjunction\" syntax is \"conjunction(id,i/n)\""); | |
5555 | } | |
5556 | ||
5557 | if (n_clauses < 2) { | |
5558 | return xstrdup("conjunction must have at least 2 clauses"); | |
5559 | } else if (n_clauses > 64) { | |
5560 | return xstrdup("conjunction must have at most 64 clauses"); | |
5561 | } else if (clause < 1) { | |
5562 | return xstrdup("clause index must be positive"); | |
5563 | } else if (clause > n_clauses) { | |
5564 | return xstrdup("clause index must be less than or equal to " | |
5565 | "number of clauses"); | |
5566 | } | |
5567 | ||
efefbcae | 5568 | add_conjunction(pp->ofpacts, id, clause - 1, n_clauses); |
18080541 BP |
5569 | return NULL; |
5570 | } | |
ae6f7530 BP |
5571 | |
5572 | static enum ofperr | |
5573 | check_CONJUNCTION(const struct ofpact_conjunction *a OVS_UNUSED, | |
5574 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5575 | { | |
5576 | return 0; | |
5577 | } | |
18080541 | 5578 | \f |
c2d936a4 BP |
5579 | /* Action structure for NXAST_MULTIPATH. |
5580 | * | |
5581 | * This action performs the following steps in sequence: | |
5582 | * | |
5583 | * 1. Hashes the fields designated by 'fields', one of NX_HASH_FIELDS_*. | |
5584 | * Refer to the definition of "enum nx_mp_fields" for details. | |
5585 | * | |
5586 | * The 'basis' value is used as a universal hash parameter, that is, | |
5587 | * different values of 'basis' yield different hash functions. The | |
5588 | * particular universal hash function used is implementation-defined. | |
5589 | * | |
5590 | * The hashed fields' values are drawn from the current state of the | |
5591 | * flow, including all modifications that have been made by actions up to | |
5592 | * this point. | |
5593 | * | |
5594 | * 2. Applies the multipath link choice algorithm specified by 'algorithm', | |
5595 | * one of NX_MP_ALG_*. Refer to the definition of "enum nx_mp_algorithm" | |
5596 | * for details. | |
5597 | * | |
5598 | * The output of the algorithm is 'link', an unsigned integer less than | |
5599 | * or equal to 'max_link'. | |
5600 | * | |
5601 | * Some algorithms use 'arg' as an additional argument. | |
5602 | * | |
5603 | * 3. Stores 'link' in dst[ofs:ofs+n_bits]. The format and semantics of | |
5604 | * 'dst' and 'ofs_nbits' are similar to those for the NXAST_REG_LOAD | |
5605 | * action. | |
5606 | * | |
5607 | * The switch will reject actions that have an unknown 'fields', or an unknown | |
5608 | * 'algorithm', or in which ofs+n_bits is greater than the width of 'dst', or | |
5609 | * in which 'max_link' is greater than or equal to 2**n_bits, with error type | |
5610 | * OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. | |
5611 | */ | |
5612 | struct nx_action_multipath { | |
5613 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5614 | ovs_be16 len; /* Length is 32. */ | |
5615 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5616 | ovs_be16 subtype; /* NXAST_MULTIPATH. */ | |
5617 | ||
5618 | /* What fields to hash and how. */ | |
5619 | ovs_be16 fields; /* One of NX_HASH_FIELDS_*. */ | |
5620 | ovs_be16 basis; /* Universal hash parameter. */ | |
5621 | ovs_be16 pad0; | |
5622 | ||
5623 | /* Multipath link choice algorithm to apply to hash value. */ | |
5624 | ovs_be16 algorithm; /* One of NX_MP_ALG_*. */ | |
5625 | ovs_be16 max_link; /* Number of output links, minus 1. */ | |
5626 | ovs_be32 arg; /* Algorithm-specific argument. */ | |
5627 | ovs_be16 pad1; | |
5628 | ||
5629 | /* Where to store the result. */ | |
5630 | ovs_be16 ofs_nbits; /* (ofs << 6) | (n_bits - 1). */ | |
5631 | ovs_be32 dst; /* Destination. */ | |
5632 | }; | |
5633 | OFP_ASSERT(sizeof(struct nx_action_multipath) == 32); | |
5634 | ||
5635 | static enum ofperr | |
5636 | decode_NXAST_RAW_MULTIPATH(const struct nx_action_multipath *nam, | |
f3cd3ac7 | 5637 | enum ofp_version ofp_version OVS_UNUSED, |
04f48a68 | 5638 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 5639 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
c2d936a4 BP |
5640 | { |
5641 | uint32_t n_links = ntohs(nam->max_link) + 1; | |
5642 | size_t min_n_bits = log_2_ceil(n_links); | |
5643 | struct ofpact_multipath *mp; | |
5c7c16d8 | 5644 | enum ofperr error; |
c2d936a4 BP |
5645 | |
5646 | mp = ofpact_put_MULTIPATH(out); | |
5647 | mp->fields = ntohs(nam->fields); | |
5648 | mp->basis = ntohs(nam->basis); | |
5649 | mp->algorithm = ntohs(nam->algorithm); | |
5650 | mp->max_link = ntohs(nam->max_link); | |
5651 | mp->arg = ntohl(nam->arg); | |
c2d936a4 BP |
5652 | mp->dst.ofs = nxm_decode_ofs(nam->ofs_nbits); |
5653 | mp->dst.n_bits = nxm_decode_n_bits(nam->ofs_nbits); | |
5c7c16d8 YHW |
5654 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nam->dst), vl_mff_map, |
5655 | &mp->dst.field, tlv_bitmap); | |
5656 | if (error) { | |
5657 | return error; | |
04f48a68 YHW |
5658 | } |
5659 | ||
c2d936a4 BP |
5660 | if (!flow_hash_fields_valid(mp->fields)) { |
5661 | VLOG_WARN_RL(&rl, "unsupported fields %d", (int) mp->fields); | |
5662 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5663 | } else if (mp->algorithm != NX_MP_ALG_MODULO_N | |
5664 | && mp->algorithm != NX_MP_ALG_HASH_THRESHOLD | |
5665 | && mp->algorithm != NX_MP_ALG_HRW | |
5666 | && mp->algorithm != NX_MP_ALG_ITER_HASH) { | |
5667 | VLOG_WARN_RL(&rl, "unsupported algorithm %d", (int) mp->algorithm); | |
5668 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5669 | } else if (mp->dst.n_bits < min_n_bits) { | |
5670 | VLOG_WARN_RL(&rl, "multipath action requires at least %"PRIuSIZE" bits for " | |
5671 | "%"PRIu32" links", min_n_bits, n_links); | |
5672 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
5673 | } | |
5674 | ||
5675 | return multipath_check(mp, NULL); | |
5676 | } | |
5677 | ||
5678 | static void | |
5679 | encode_MULTIPATH(const struct ofpact_multipath *mp, | |
5680 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5681 | { | |
5682 | struct nx_action_multipath *nam = put_NXAST_MULTIPATH(out); | |
5683 | ||
5684 | nam->fields = htons(mp->fields); | |
5685 | nam->basis = htons(mp->basis); | |
5686 | nam->algorithm = htons(mp->algorithm); | |
5687 | nam->max_link = htons(mp->max_link); | |
5688 | nam->arg = htonl(mp->arg); | |
5689 | nam->ofs_nbits = nxm_encode_ofs_nbits(mp->dst.ofs, mp->dst.n_bits); | |
04f48a68 | 5690 | nam->dst = htonl(nxm_header_from_mff(mp->dst.field)); |
c2d936a4 BP |
5691 | } |
5692 | ||
cab50449 | 5693 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5694 | parse_MULTIPATH(const char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 5695 | { |
efefbcae | 5696 | return multipath_parse(ofpact_put_MULTIPATH(pp->ofpacts), arg); |
c2d936a4 BP |
5697 | } |
5698 | ||
5699 | static void | |
50f96b10 | 5700 | format_MULTIPATH(const struct ofpact_multipath *a, |
efefbcae | 5701 | const struct ofpact_format_params *fp) |
c2d936a4 | 5702 | { |
efefbcae | 5703 | multipath_format(a, fp->s); |
c2d936a4 | 5704 | } |
ae6f7530 BP |
5705 | |
5706 | static enum ofperr | |
5707 | check_MULTIPATH(const struct ofpact_multipath *a, | |
5708 | const struct ofpact_check_params *cp) | |
5709 | { | |
5710 | return multipath_check(a, cp->match); | |
5711 | } | |
c2d936a4 BP |
5712 | \f |
5713 | /* Action structure for NXAST_NOTE. | |
5714 | * | |
5715 | * This action has no effect. It is variable length. The switch does not | |
5716 | * attempt to interpret the user-defined 'note' data in any way. A controller | |
5717 | * can use this action to attach arbitrary metadata to a flow. | |
5718 | * | |
5719 | * This action might go away in the future. | |
5720 | */ | |
5721 | struct nx_action_note { | |
5722 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5723 | ovs_be16 len; /* A multiple of 8, but at least 16. */ | |
5724 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5725 | ovs_be16 subtype; /* NXAST_NOTE. */ | |
5726 | uint8_t note[6]; /* Start of user-defined data. */ | |
5727 | /* Possibly followed by additional user-defined data. */ | |
5728 | }; | |
5729 | OFP_ASSERT(sizeof(struct nx_action_note) == 16); | |
5730 | ||
5731 | static enum ofperr | |
f3cd3ac7 JS |
5732 | decode_NXAST_RAW_NOTE(const struct nx_action_note *nan, |
5733 | enum ofp_version ofp_version OVS_UNUSED, | |
5734 | struct ofpbuf *out) | |
c2d936a4 BP |
5735 | { |
5736 | struct ofpact_note *note; | |
5737 | unsigned int length; | |
5738 | ||
5739 | length = ntohs(nan->len) - offsetof(struct nx_action_note, note); | |
2bd318de | 5740 | note = ofpact_put_NOTE(out); |
c2d936a4 | 5741 | note->length = length; |
2bd318de | 5742 | ofpbuf_put(out, nan->note, length); |
ace39a6f | 5743 | note = out->header; |
ce058104 | 5744 | ofpact_finish_NOTE(out, ¬e); |
c2d936a4 BP |
5745 | |
5746 | return 0; | |
5747 | } | |
5748 | ||
5749 | static void | |
5750 | encode_NOTE(const struct ofpact_note *note, | |
5751 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5752 | { | |
6fd6ed71 | 5753 | size_t start_ofs = out->size; |
c2d936a4 | 5754 | struct nx_action_note *nan; |
c2d936a4 BP |
5755 | |
5756 | put_NXAST_NOTE(out); | |
6fd6ed71 | 5757 | out->size = out->size - sizeof nan->note; |
c2d936a4 BP |
5758 | |
5759 | ofpbuf_put(out, note->data, note->length); | |
9ac0aada | 5760 | pad_ofpat(out, start_ofs); |
c2d936a4 BP |
5761 | } |
5762 | ||
cab50449 | 5763 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae BP |
5764 | parse_NOTE(const char *arg, const struct ofpact_parse_params *pp) |
5765 | { | |
5766 | size_t start_ofs = pp->ofpacts->size; | |
5767 | ofpact_put_NOTE(pp->ofpacts); | |
5768 | arg = ofpbuf_put_hex(pp->ofpacts, arg, NULL); | |
27aa8793 BP |
5769 | if (arg[0]) { |
5770 | return xstrdup("bad hex digit in `note' argument"); | |
5771 | } | |
efefbcae | 5772 | struct ofpact_note *note = ofpbuf_at_assert(pp->ofpacts, start_ofs, |
27aa8793 | 5773 | sizeof *note); |
efefbcae BP |
5774 | note->length = pp->ofpacts->size - (start_ofs + sizeof *note); |
5775 | ofpact_finish_NOTE(pp->ofpacts, ¬e); | |
c2d936a4 BP |
5776 | return NULL; |
5777 | } | |
5778 | ||
5779 | static void | |
50f96b10 | 5780 | format_NOTE(const struct ofpact_note *a, |
efefbcae | 5781 | const struct ofpact_format_params *fp) |
c2d936a4 | 5782 | { |
efefbcae BP |
5783 | ds_put_format(fp->s, "%snote:%s", colors.param, colors.end); |
5784 | format_hex_arg(fp->s, a->data, a->length); | |
c2d936a4 | 5785 | } |
ae6f7530 BP |
5786 | |
5787 | static enum ofperr | |
5788 | check_NOTE(const struct ofpact_note *a OVS_UNUSED, | |
5789 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5790 | { | |
5791 | return 0; | |
5792 | } | |
c2d936a4 BP |
5793 | \f |
5794 | /* Exit action. */ | |
5795 | ||
5796 | static enum ofperr | |
5797 | decode_NXAST_RAW_EXIT(struct ofpbuf *out) | |
5798 | { | |
5799 | ofpact_put_EXIT(out); | |
5800 | return 0; | |
5801 | } | |
5802 | ||
5803 | static void | |
5804 | encode_EXIT(const struct ofpact_null *null OVS_UNUSED, | |
5805 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
5806 | { | |
5807 | put_NXAST_EXIT(out); | |
5808 | } | |
5809 | ||
cab50449 | 5810 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 5811 | parse_EXIT(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 5812 | { |
efefbcae | 5813 | ofpact_put_EXIT(pp->ofpacts); |
c2d936a4 BP |
5814 | return NULL; |
5815 | } | |
5816 | ||
5817 | static void | |
50f96b10 | 5818 | format_EXIT(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 5819 | const struct ofpact_format_params *fp) |
c2d936a4 | 5820 | { |
efefbcae | 5821 | ds_put_format(fp->s, "%sexit%s", colors.special, colors.end); |
c2d936a4 | 5822 | } |
ae6f7530 BP |
5823 | |
5824 | static enum ofperr | |
5825 | check_EXIT(const struct ofpact_null *a OVS_UNUSED, | |
5826 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5827 | { | |
5828 | return 0; | |
5829 | } | |
c2d936a4 | 5830 | \f |
e672ff9b JR |
5831 | /* Unroll xlate action. */ |
5832 | ||
5833 | static void | |
5834 | encode_UNROLL_XLATE(const struct ofpact_unroll_xlate *unroll OVS_UNUSED, | |
5835 | enum ofp_version ofp_version OVS_UNUSED, | |
5836 | struct ofpbuf *out OVS_UNUSED) | |
5837 | { | |
5838 | OVS_NOT_REACHED(); | |
5839 | } | |
5840 | ||
5841 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 5842 | parse_UNROLL_XLATE(char *arg OVS_UNUSED, |
efefbcae | 5843 | const struct ofpact_parse_params *pp OVS_UNUSED) |
e672ff9b JR |
5844 | { |
5845 | OVS_NOT_REACHED(); | |
e672ff9b JR |
5846 | } |
5847 | ||
5848 | static void | |
50f96b10 | 5849 | format_UNROLL_XLATE(const struct ofpact_unroll_xlate *a, |
efefbcae | 5850 | const struct ofpact_format_params *fp) |
e672ff9b | 5851 | { |
4bc938cc | 5852 | ds_put_format(fp->s, "%sunroll_xlate(%s%stable=%s", |
b1c5bf1f | 5853 | colors.paren, colors.end, |
4bc938cc BP |
5854 | colors.special, colors.end); |
5855 | ofputil_format_table(a->rule_table_id, fp->table_map, fp->s); | |
5856 | ds_put_format(fp->s, ", %scookie=%s%"PRIu64"%s)%s", | |
b1c5bf1f QM |
5857 | colors.param, colors.end, ntohll(a->rule_cookie), |
5858 | colors.paren, colors.end); | |
e672ff9b | 5859 | } |
ae6f7530 BP |
5860 | |
5861 | static enum ofperr | |
5862 | check_UNROLL_XLATE(const struct ofpact_unroll_xlate *a OVS_UNUSED, | |
5863 | const struct ofpact_check_params *cp OVS_UNUSED) | |
5864 | { | |
5865 | /* UNROLL is an internal action that should never be seen via OpenFlow. */ | |
5866 | return OFPERR_OFPBAC_BAD_TYPE; | |
5867 | } | |
e672ff9b | 5868 | \f |
7ae62a67 WT |
5869 | /* The NXAST_CLONE action is "struct ext_action_header", followed by zero or |
5870 | * more embedded OpenFlow actions. */ | |
5871 | ||
5872 | static enum ofperr | |
5873 | decode_NXAST_RAW_CLONE(const struct ext_action_header *eah, | |
04f48a68 YHW |
5874 | enum ofp_version ofp_version, |
5875 | const struct vl_mff_map *vl_mff_map, | |
5c7c16d8 | 5876 | uint64_t *tlv_bitmap, struct ofpbuf *out) |
7ae62a67 WT |
5877 | { |
5878 | int error; | |
5879 | struct ofpbuf openflow; | |
5880 | const size_t clone_offset = ofpacts_pull(out); | |
5881 | struct ofpact_nest *clone = ofpact_put_CLONE(out); | |
5882 | ||
5883 | /* decode action list */ | |
5884 | ofpbuf_pull(out, sizeof(*clone)); | |
5885 | openflow = ofpbuf_const_initializer( | |
5886 | eah + 1, ntohs(eah->len) - sizeof *eah); | |
5887 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, | |
5888 | ofp_version, | |
5889 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 | 5890 | out, 0, vl_mff_map, tlv_bitmap); |
7ae62a67 WT |
5891 | clone = ofpbuf_push_uninit(out, sizeof *clone); |
5892 | out->header = &clone->ofpact; | |
5893 | ofpact_finish_CLONE(out, &clone); | |
5894 | ofpbuf_push_uninit(out, clone_offset); | |
5895 | return error; | |
5896 | } | |
5897 | ||
5898 | static void | |
5899 | encode_CLONE(const struct ofpact_nest *clone, | |
5900 | enum ofp_version ofp_version, struct ofpbuf *out) | |
5901 | { | |
5902 | size_t len; | |
5903 | const size_t ofs = out->size; | |
5904 | struct ext_action_header *eah; | |
5905 | ||
6f9648e4 | 5906 | put_NXAST_CLONE(out); |
7ae62a67 WT |
5907 | len = ofpacts_put_openflow_actions(clone->actions, |
5908 | ofpact_nest_get_action_len(clone), | |
5909 | out, ofp_version); | |
5910 | len += sizeof *eah; | |
5911 | eah = ofpbuf_at(out, ofs, sizeof *eah); | |
5912 | eah->len = htons(len); | |
5913 | } | |
5914 | ||
5915 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 5916 | parse_CLONE(char *arg, const struct ofpact_parse_params *pp) |
7ae62a67 | 5917 | { |
efefbcae BP |
5918 | const size_t clone_offset = ofpacts_pull(pp->ofpacts); |
5919 | struct ofpact_nest *clone = ofpact_put_CLONE(pp->ofpacts); | |
7ae62a67 WT |
5920 | char *error; |
5921 | ||
efefbcae BP |
5922 | ofpbuf_pull(pp->ofpacts, sizeof *clone); |
5923 | error = ofpacts_parse_copy(arg, pp, false, 0); | |
7ae62a67 | 5924 | /* header points to the action list */ |
efefbcae BP |
5925 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, sizeof *clone); |
5926 | clone = pp->ofpacts->header; | |
7ae62a67 | 5927 | |
efefbcae BP |
5928 | ofpact_finish_CLONE(pp->ofpacts, &clone); |
5929 | ofpbuf_push_uninit(pp->ofpacts, clone_offset); | |
7ae62a67 WT |
5930 | return error; |
5931 | } | |
5932 | ||
5933 | static void | |
50f96b10 | 5934 | format_CLONE(const struct ofpact_nest *a, |
efefbcae | 5935 | const struct ofpact_format_params *fp) |
7ae62a67 | 5936 | { |
efefbcae BP |
5937 | ds_put_format(fp->s, "%sclone(%s", colors.paren, colors.end); |
5938 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
5939 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
7ae62a67 | 5940 | } |
ae6f7530 BP |
5941 | |
5942 | static enum ofperr | |
5943 | check_subactions(struct ofpact *ofpacts, size_t ofpacts_len, | |
5944 | struct ofpact_check_params *cp) | |
5945 | { | |
5946 | struct ofpact_check_params sub = *cp; | |
5947 | enum ofperr error = ofpacts_check(ofpacts, ofpacts_len, &sub); | |
5948 | cp->usable_protocols &= sub.usable_protocols; | |
5949 | return error; | |
5950 | } | |
5951 | ||
5952 | static enum ofperr | |
5953 | check_CLONE(struct ofpact_nest *a, struct ofpact_check_params *cp) | |
5954 | { | |
5955 | return check_subactions(a->actions, ofpact_nest_get_action_len(a), cp); | |
5956 | } | |
7ae62a67 | 5957 | \f |
c2d936a4 BP |
5958 | /* Action structure for NXAST_SAMPLE. |
5959 | * | |
5960 | * Samples matching packets with the given probability and sends them | |
5961 | * each to the set of collectors identified with the given ID. The | |
5962 | * probability is expressed as a number of packets to be sampled out | |
5963 | * of USHRT_MAX packets, and must be >0. | |
5964 | * | |
5965 | * When sending packet samples to IPFIX collectors, the IPFIX flow | |
5966 | * record sent for each sampled packet is associated with the given | |
5967 | * observation domain ID and observation point ID. Each IPFIX flow | |
5968 | * record contain the sampled packet's headers when executing this | |
5969 | * rule. If a sampled packet's headers are modified by previous | |
5970 | * actions in the flow, those modified headers are sent. */ | |
5971 | struct nx_action_sample { | |
5972 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5973 | ovs_be16 len; /* Length is 24. */ | |
5974 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5975 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5976 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5977 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5978 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5979 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5980 | }; | |
5981 | OFP_ASSERT(sizeof(struct nx_action_sample) == 24); | |
5982 | ||
4930ea56 | 5983 | /* Action structure for NXAST_SAMPLE2 and NXAST_SAMPLE3. |
f69f713b | 5984 | * |
4930ea56 BP |
5985 | * NXAST_SAMPLE2 was added in Open vSwitch 2.5.90. Compared to NXAST_SAMPLE, |
5986 | * it adds support for exporting egress tunnel information. | |
5987 | * | |
5988 | * NXAST_SAMPLE3 was added in Open vSwitch 2.6.90. Compared to NXAST_SAMPLE2, | |
5989 | * it adds support for the 'direction' field. */ | |
f69f713b BY |
5990 | struct nx_action_sample2 { |
5991 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
5992 | ovs_be16 len; /* Length is 32. */ | |
5993 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
5994 | ovs_be16 subtype; /* NXAST_SAMPLE. */ | |
5995 | ovs_be16 probability; /* Fraction of packets to sample. */ | |
5996 | ovs_be32 collector_set_id; /* ID of collector set in OVSDB. */ | |
5997 | ovs_be32 obs_domain_id; /* ID of sampling observation domain. */ | |
5998 | ovs_be32 obs_point_id; /* ID of sampling observation point. */ | |
5999 | ovs_be16 sampling_port; /* Sampling port. */ | |
4930ea56 BP |
6000 | uint8_t direction; /* NXAST_SAMPLE3 only. */ |
6001 | uint8_t zeros[5]; /* Pad to a multiple of 8 bytes */ | |
f69f713b BY |
6002 | }; |
6003 | OFP_ASSERT(sizeof(struct nx_action_sample2) == 32); | |
6004 | ||
c2d936a4 | 6005 | static enum ofperr |
f3cd3ac7 JS |
6006 | decode_NXAST_RAW_SAMPLE(const struct nx_action_sample *nas, |
6007 | enum ofp_version ofp_version OVS_UNUSED, | |
6008 | struct ofpbuf *out) | |
c2d936a4 BP |
6009 | { |
6010 | struct ofpact_sample *sample; | |
6011 | ||
6012 | sample = ofpact_put_SAMPLE(out); | |
f69f713b BY |
6013 | sample->ofpact.raw = NXAST_RAW_SAMPLE; |
6014 | sample->probability = ntohs(nas->probability); | |
6015 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
6016 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
6017 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 6018 | sample->sampling_port = OFPP_NONE; |
4930ea56 | 6019 | sample->direction = NX_ACTION_SAMPLE_DEFAULT; |
f69f713b BY |
6020 | |
6021 | if (sample->probability == 0) { | |
6022 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6023 | } | |
6024 | ||
6025 | return 0; | |
6026 | } | |
6027 | ||
6028 | static enum ofperr | |
4930ea56 BP |
6029 | decode_SAMPLE2(const struct nx_action_sample2 *nas, |
6030 | enum ofp_raw_action_type raw, | |
6031 | enum nx_action_sample_direction direction, | |
6032 | struct ofpact_sample *sample) | |
f69f713b | 6033 | { |
4930ea56 | 6034 | sample->ofpact.raw = raw; |
c2d936a4 BP |
6035 | sample->probability = ntohs(nas->probability); |
6036 | sample->collector_set_id = ntohl(nas->collector_set_id); | |
6037 | sample->obs_domain_id = ntohl(nas->obs_domain_id); | |
6038 | sample->obs_point_id = ntohl(nas->obs_point_id); | |
f69f713b | 6039 | sample->sampling_port = u16_to_ofp(ntohs(nas->sampling_port)); |
4930ea56 | 6040 | sample->direction = direction; |
c2d936a4 BP |
6041 | |
6042 | if (sample->probability == 0) { | |
6043 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6044 | } | |
6045 | ||
6046 | return 0; | |
6047 | } | |
6048 | ||
4930ea56 BP |
6049 | static enum ofperr |
6050 | decode_NXAST_RAW_SAMPLE2(const struct nx_action_sample2 *nas, | |
6051 | enum ofp_version ofp_version OVS_UNUSED, | |
6052 | struct ofpbuf *out) | |
6053 | { | |
6054 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE2, NX_ACTION_SAMPLE_DEFAULT, | |
6055 | ofpact_put_SAMPLE(out)); | |
6056 | } | |
6057 | ||
6058 | static enum ofperr | |
6059 | decode_NXAST_RAW_SAMPLE3(const struct nx_action_sample2 *nas, | |
6060 | enum ofp_version ofp_version OVS_UNUSED, | |
6061 | struct ofpbuf *out) | |
6062 | { | |
6063 | struct ofpact_sample *sample = ofpact_put_SAMPLE(out); | |
6064 | if (!is_all_zeros(nas->zeros, sizeof nas->zeros)) { | |
6065 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
6066 | } | |
6067 | if (nas->direction != NX_ACTION_SAMPLE_DEFAULT && | |
6068 | nas->direction != NX_ACTION_SAMPLE_INGRESS && | |
6069 | nas->direction != NX_ACTION_SAMPLE_EGRESS) { | |
6070 | VLOG_WARN_RL(&rl, "invalid sample direction %"PRIu8, nas->direction); | |
6071 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6072 | } | |
6073 | return decode_SAMPLE2(nas, NXAST_RAW_SAMPLE3, nas->direction, sample); | |
6074 | } | |
6075 | ||
6076 | static void | |
6077 | encode_SAMPLE2(const struct ofpact_sample *sample, | |
6078 | struct nx_action_sample2 *nas) | |
6079 | { | |
6080 | nas->probability = htons(sample->probability); | |
6081 | nas->collector_set_id = htonl(sample->collector_set_id); | |
6082 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
6083 | nas->obs_point_id = htonl(sample->obs_point_id); | |
6084 | nas->sampling_port = htons(ofp_to_u16(sample->sampling_port)); | |
6085 | nas->direction = sample->direction; | |
6086 | } | |
6087 | ||
c2d936a4 BP |
6088 | static void |
6089 | encode_SAMPLE(const struct ofpact_sample *sample, | |
6090 | enum ofp_version ofp_version OVS_UNUSED, struct ofpbuf *out) | |
6091 | { | |
4930ea56 BP |
6092 | if (sample->ofpact.raw == NXAST_RAW_SAMPLE3 |
6093 | || sample->direction != NX_ACTION_SAMPLE_DEFAULT) { | |
6094 | encode_SAMPLE2(sample, put_NXAST_SAMPLE3(out)); | |
6095 | } else if (sample->ofpact.raw == NXAST_RAW_SAMPLE2 | |
6096 | || sample->sampling_port != OFPP_NONE) { | |
6097 | encode_SAMPLE2(sample, put_NXAST_SAMPLE2(out)); | |
f69f713b BY |
6098 | } else { |
6099 | struct nx_action_sample *nas = put_NXAST_SAMPLE(out); | |
6100 | nas->probability = htons(sample->probability); | |
6101 | nas->collector_set_id = htonl(sample->collector_set_id); | |
6102 | nas->obs_domain_id = htonl(sample->obs_domain_id); | |
6103 | nas->obs_point_id = htonl(sample->obs_point_id); | |
6104 | } | |
c2d936a4 BP |
6105 | } |
6106 | ||
6107 | /* Parses 'arg' as the argument to a "sample" action, and appends such an | |
efefbcae | 6108 | * action to 'pp->ofpacts'. |
c2d936a4 BP |
6109 | * |
6110 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6111 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 6112 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 6113 | parse_SAMPLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 6114 | { |
efefbcae | 6115 | struct ofpact_sample *os = ofpact_put_SAMPLE(pp->ofpacts); |
f69f713b | 6116 | os->sampling_port = OFPP_NONE; |
4930ea56 | 6117 | os->direction = NX_ACTION_SAMPLE_DEFAULT; |
c2d936a4 | 6118 | |
f69f713b | 6119 | char *key, *value; |
c2d936a4 BP |
6120 | while (ofputil_parse_key_value(&arg, &key, &value)) { |
6121 | char *error = NULL; | |
6122 | ||
6123 | if (!strcmp(key, "probability")) { | |
6124 | error = str_to_u16(value, "probability", &os->probability); | |
6125 | if (!error && os->probability == 0) { | |
6126 | error = xasprintf("invalid probability value \"%s\"", value); | |
6127 | } | |
6128 | } else if (!strcmp(key, "collector_set_id")) { | |
6129 | error = str_to_u32(value, &os->collector_set_id); | |
6130 | } else if (!strcmp(key, "obs_domain_id")) { | |
6131 | error = str_to_u32(value, &os->obs_domain_id); | |
6132 | } else if (!strcmp(key, "obs_point_id")) { | |
6133 | error = str_to_u32(value, &os->obs_point_id); | |
f69f713b | 6134 | } else if (!strcmp(key, "sampling_port")) { |
efefbcae | 6135 | if (!ofputil_port_from_string(value, pp->port_map, |
50f96b10 | 6136 | &os->sampling_port)) { |
f69f713b BY |
6137 | error = xasprintf("%s: unknown port", value); |
6138 | } | |
4930ea56 BP |
6139 | } else if (!strcmp(key, "ingress")) { |
6140 | os->direction = NX_ACTION_SAMPLE_INGRESS; | |
6141 | } else if (!strcmp(key, "egress")) { | |
6142 | os->direction = NX_ACTION_SAMPLE_EGRESS; | |
c2d936a4 BP |
6143 | } else { |
6144 | error = xasprintf("invalid key \"%s\" in \"sample\" argument", | |
6145 | key); | |
6146 | } | |
6147 | if (error) { | |
6148 | return error; | |
6149 | } | |
6150 | } | |
6151 | if (os->probability == 0) { | |
6152 | return xstrdup("non-zero \"probability\" must be specified on sample"); | |
6153 | } | |
f69f713b | 6154 | |
c2d936a4 BP |
6155 | return NULL; |
6156 | } | |
6157 | ||
6158 | static void | |
50f96b10 | 6159 | format_SAMPLE(const struct ofpact_sample *a, |
efefbcae | 6160 | const struct ofpact_format_params *fp) |
c2d936a4 | 6161 | { |
efefbcae | 6162 | ds_put_format(fp->s, "%ssample(%s%sprobability=%s%"PRIu16 |
b1c5bf1f QM |
6163 | ",%scollector_set_id=%s%"PRIu32 |
6164 | ",%sobs_domain_id=%s%"PRIu32 | |
f69f713b | 6165 | ",%sobs_point_id=%s%"PRIu32, |
b1c5bf1f QM |
6166 | colors.paren, colors.end, |
6167 | colors.param, colors.end, a->probability, | |
6168 | colors.param, colors.end, a->collector_set_id, | |
6169 | colors.param, colors.end, a->obs_domain_id, | |
f69f713b BY |
6170 | colors.param, colors.end, a->obs_point_id); |
6171 | if (a->sampling_port != OFPP_NONE) { | |
efefbcae BP |
6172 | ds_put_format(fp->s, ",%ssampling_port=%s", colors.param, colors.end); |
6173 | ofputil_format_port(a->sampling_port, fp->port_map, fp->s); | |
f69f713b | 6174 | } |
4930ea56 | 6175 | if (a->direction == NX_ACTION_SAMPLE_INGRESS) { |
efefbcae | 6176 | ds_put_format(fp->s, ",%singress%s", colors.param, colors.end); |
4930ea56 | 6177 | } else if (a->direction == NX_ACTION_SAMPLE_EGRESS) { |
efefbcae | 6178 | ds_put_format(fp->s, ",%segress%s", colors.param, colors.end); |
4930ea56 | 6179 | } |
efefbcae | 6180 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); |
c2d936a4 | 6181 | } |
ae6f7530 BP |
6182 | |
6183 | static enum ofperr | |
6184 | check_SAMPLE(const struct ofpact_sample *a OVS_UNUSED, | |
6185 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6186 | { | |
6187 | return 0; | |
6188 | } | |
c2d936a4 | 6189 | \f |
a934a3dd | 6190 | /* debug instructions. */ |
d4abaff5 BP |
6191 | |
6192 | static bool enable_debug; | |
6193 | ||
6194 | void | |
6195 | ofpact_dummy_enable(void) | |
6196 | { | |
6197 | enable_debug = true; | |
6198 | } | |
6199 | ||
6200 | static enum ofperr | |
6201 | decode_NXAST_RAW_DEBUG_RECIRC(struct ofpbuf *out) | |
6202 | { | |
6203 | if (!enable_debug) { | |
6204 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
6205 | } | |
6206 | ||
6207 | ofpact_put_DEBUG_RECIRC(out); | |
6208 | return 0; | |
6209 | } | |
6210 | ||
6211 | static void | |
6212 | encode_DEBUG_RECIRC(const struct ofpact_null *n OVS_UNUSED, | |
6213 | enum ofp_version ofp_version OVS_UNUSED, | |
6214 | struct ofpbuf *out) | |
6215 | { | |
6216 | put_NXAST_DEBUG_RECIRC(out); | |
6217 | } | |
6218 | ||
6219 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6220 | parse_DEBUG_RECIRC(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
d4abaff5 | 6221 | { |
efefbcae | 6222 | ofpact_put_DEBUG_RECIRC(pp->ofpacts); |
d4abaff5 BP |
6223 | return NULL; |
6224 | } | |
6225 | ||
6226 | static void | |
50f96b10 | 6227 | format_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6228 | const struct ofpact_format_params *fp) |
d4abaff5 | 6229 | { |
efefbcae | 6230 | ds_put_format(fp->s, "%sdebug_recirc%s", colors.value, colors.end); |
d4abaff5 | 6231 | } |
07659514 | 6232 | |
ae6f7530 BP |
6233 | static enum ofperr |
6234 | check_DEBUG_RECIRC(const struct ofpact_null *a OVS_UNUSED, | |
6235 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6236 | { | |
6237 | return 0; | |
6238 | } | |
6239 | ||
a934a3dd JP |
6240 | static enum ofperr |
6241 | decode_NXAST_RAW_DEBUG_SLOW(struct ofpbuf *out) | |
6242 | { | |
6243 | if (!enable_debug) { | |
6244 | return OFPERR_OFPBAC_BAD_VENDOR_TYPE; | |
6245 | } | |
6246 | ||
6247 | ofpact_put_DEBUG_SLOW(out); | |
6248 | return 0; | |
6249 | } | |
6250 | ||
6251 | static void | |
6252 | encode_DEBUG_SLOW(const struct ofpact_null *n OVS_UNUSED, | |
6253 | enum ofp_version ofp_version OVS_UNUSED, | |
6254 | struct ofpbuf *out) | |
6255 | { | |
6256 | put_NXAST_DEBUG_SLOW(out); | |
6257 | } | |
6258 | ||
6259 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6260 | parse_DEBUG_SLOW(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
a934a3dd | 6261 | { |
efefbcae | 6262 | ofpact_put_DEBUG_SLOW(pp->ofpacts); |
a934a3dd JP |
6263 | return NULL; |
6264 | } | |
6265 | ||
6266 | static void | |
6267 | format_DEBUG_SLOW(const struct ofpact_null *a OVS_UNUSED, | |
efefbcae | 6268 | const struct ofpact_format_params *fp) |
a934a3dd | 6269 | { |
efefbcae | 6270 | ds_put_format(fp->s, "%sdebug_slow%s", colors.value, colors.end); |
a934a3dd JP |
6271 | } |
6272 | ||
ae6f7530 BP |
6273 | static enum ofperr |
6274 | check_DEBUG_SLOW(const struct ofpact_null *a OVS_UNUSED, | |
6275 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6276 | { | |
6277 | return 0; | |
6278 | } | |
6279 | ||
07659514 JS |
6280 | /* Action structure for NXAST_CT. |
6281 | * | |
6282 | * Pass traffic to the connection tracker. | |
6283 | * | |
6284 | * There are two important concepts to understanding the connection tracking | |
6285 | * interface: Packet state and Connection state. Packets may be "Untracked" or | |
6286 | * "Tracked". Connections may be "Uncommitted" or "Committed". | |
6287 | * | |
6288 | * - Packet State: | |
6289 | * | |
f6fabcc6 JP |
6290 | * Untracked packets have an unknown connection state. In most |
6291 | * cases, packets entering the OpenFlow pipeline will initially be | |
6292 | * in the untracked state. Untracked packets may become tracked by | |
6293 | * executing NXAST_CT with a "recirc_table" specified. This makes | |
6294 | * various aspects about the connection available, in particular | |
6295 | * the connection state. | |
6296 | * | |
6297 | * An NXAST_CT action always puts the packet into an untracked | |
6298 | * state for the current processing path. If "recirc_table" is | |
6299 | * set, execution is forked and the packet passes through the | |
6300 | * connection tracker. The specified table's processing path is | |
6301 | * able to match on Connection state until the end of the OpenFlow | |
6302 | * pipeline or NXAST_CT is called again. | |
07659514 JS |
6303 | * |
6304 | * - Connection State: | |
6305 | * | |
6306 | * Multiple packets may be associated with a single connection. Initially, | |
6307 | * all connections are uncommitted. The connection state corresponding to | |
6308 | * a packet is available in the NXM_NX_CT_STATE field for tracked packets. | |
6309 | * | |
6310 | * Uncommitted connections have no state stored about them. Uncommitted | |
6311 | * connections may transition into the committed state by executing | |
6312 | * NXAST_CT with the NX_CT_F_COMMIT flag. | |
6313 | * | |
6314 | * Once a connection becomes committed, information may be gathered about | |
6315 | * the connection by passing subsequent packets through the connection | |
6316 | * tracker, and the state of the connection will be stored beyond the | |
6317 | * lifetime of packet processing. | |
6318 | * | |
a76a37ef JR |
6319 | * A committed connection always has the directionality of the packet that |
6320 | * caused the connection to be committed in the first place. This is the | |
6321 | * "original direction" of the connection, and the opposite direction is | |
6322 | * the "reply direction". If a connection is already committed, but it is | |
6323 | * then decided that the original direction should be the opposite of the | |
6324 | * existing connection, NX_CT_F_FORCE flag may be used in addition to | |
6325 | * NX_CT_F_COMMIT flag to in effect terminate the existing connection and | |
6326 | * start a new one in the current direction. | |
6327 | * | |
07659514 JS |
6328 | * Connections may transition back into the uncommitted state due to |
6329 | * external timers, or due to the contents of packets that are sent to the | |
6330 | * connection tracker. This behaviour is outside of the scope of the | |
6331 | * OpenFlow interface. | |
6332 | * | |
6333 | * The "zone" specifies a context within which the tracking is done: | |
6334 | * | |
6335 | * The connection tracking zone is a 16-bit number. Each zone is an | |
6336 | * independent connection tracking context. The connection state for each | |
6337 | * connection is completely separate for each zone, so if a connection | |
6338 | * is committed to zone A, then it will remain uncommitted in zone B. | |
6339 | * If NXAST_CT is executed with the same zone multiple times, later | |
6340 | * executions have no effect. | |
6341 | * | |
6342 | * If 'zone_src' is nonzero, this specifies that the zone should be | |
6343 | * sourced from a field zone_src[ofs:ofs+nbits]. The format and semantics | |
6344 | * of 'zone_src' and 'zone_ofs_nbits' are similar to those for the | |
6345 | * NXAST_REG_LOAD action. The acceptable nxm_header values for 'zone_src' | |
6346 | * are the same as the acceptable nxm_header values for the 'src' field of | |
6347 | * NXAST_REG_MOVE. | |
6348 | * | |
6349 | * If 'zone_src' is zero, then the value of 'zone_imm' will be used as the | |
6350 | * connection tracking zone. | |
6351 | * | |
6352 | * The "recirc_table" allows NXM_NX_CT_* fields to become available: | |
6353 | * | |
6354 | * If "recirc_table" has a value other than NX_CT_RECIRC_NONE, then the | |
6355 | * packet will be logically cloned prior to executing this action. One | |
6356 | * copy will be sent to the connection tracker, then will be re-injected | |
6357 | * into the OpenFlow pipeline beginning at the OpenFlow table specified in | |
6358 | * this field. When the packet re-enters the pipeline, the NXM_NX_CT_* | |
6359 | * fields will be populated. The original instance of the packet will | |
6360 | * continue the current actions list. This can be thought of as similar to | |
6361 | * the effect of the "output" action: One copy is sent out (in this case, | |
6362 | * to the connection tracker), but the current copy continues processing. | |
6363 | * | |
6364 | * It is strongly recommended that this table is later than the current | |
6365 | * table, to prevent loops. | |
8e53fe8c | 6366 | * |
d787ad39 JS |
6367 | * The "alg" attaches protocol-specific behaviour to this action: |
6368 | * | |
6369 | * The ALG is a 16-bit number which specifies that additional | |
6370 | * processing should be applied to this traffic. | |
6371 | * | |
6372 | * Protocol | Value | Meaning | |
6373 | * -------------------------------------------------------------------- | |
6374 | * None | 0 | No protocol-specific behaviour. | |
6375 | * FTP | 21 | Parse FTP control connections and observe the | |
6376 | * | | negotiation of related data connections. | |
6377 | * Other | Other | Unsupported protocols. | |
6378 | * | |
6379 | * By way of example, if FTP control connections have this action applied | |
6380 | * with the ALG set to FTP (21), then the connection tracker will observe | |
6381 | * the negotiation of data connections. This allows the connection | |
6382 | * tracker to identify subsequent data connections as "related" to this | |
6383 | * existing connection. The "related" flag will be populated in the | |
6384 | * NXM_NX_CT_STATE field for such connections if the 'recirc_table' is | |
6385 | * specified. | |
6386 | * | |
8e53fe8c JS |
6387 | * Zero or more actions may immediately follow this action. These actions will |
6388 | * be executed within the context of the connection tracker, and they require | |
a76a37ef | 6389 | * NX_CT_F_COMMIT flag be set. |
07659514 JS |
6390 | */ |
6391 | struct nx_action_conntrack { | |
6392 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6393 | ovs_be16 len; /* At least 24. */ | |
6394 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6395 | ovs_be16 subtype; /* NXAST_CT. */ | |
6396 | ovs_be16 flags; /* Zero or more NX_CT_F_* flags. | |
6397 | * Unspecified flag bits must be zero. */ | |
6398 | ovs_be32 zone_src; /* Connection tracking context. */ | |
6399 | union { | |
6400 | ovs_be16 zone_ofs_nbits;/* Range to use from source field. */ | |
6401 | ovs_be16 zone_imm; /* Immediate value for zone. */ | |
6402 | }; | |
6403 | uint8_t recirc_table; /* Recirculate to a specific table, or | |
6404 | NX_CT_RECIRC_NONE for no recirculation. */ | |
d787ad39 JS |
6405 | uint8_t pad[3]; /* Zeroes */ |
6406 | ovs_be16 alg; /* Well-known port number for the protocol. | |
6407 | * 0 indicates no ALG is required. */ | |
07659514 JS |
6408 | /* Followed by a sequence of zero or more OpenFlow actions. The length of |
6409 | * these is included in 'len'. */ | |
6410 | }; | |
6411 | OFP_ASSERT(sizeof(struct nx_action_conntrack) == 24); | |
6412 | ||
6413 | static enum ofperr | |
6414 | decode_ct_zone(const struct nx_action_conntrack *nac, | |
04f48a68 | 6415 | struct ofpact_conntrack *out, |
5c7c16d8 | 6416 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap) |
07659514 JS |
6417 | { |
6418 | if (nac->zone_src) { | |
6419 | enum ofperr error; | |
6420 | ||
07659514 JS |
6421 | out->zone_src.ofs = nxm_decode_ofs(nac->zone_ofs_nbits); |
6422 | out->zone_src.n_bits = nxm_decode_n_bits(nac->zone_ofs_nbits); | |
5c7c16d8 YHW |
6423 | error = mf_vl_mff_mf_from_nxm_header(ntohl(nac->zone_src), |
6424 | vl_mff_map, &out->zone_src.field, | |
6425 | tlv_bitmap); | |
6426 | if (error) { | |
6427 | return error; | |
04f48a68 YHW |
6428 | } |
6429 | ||
07659514 JS |
6430 | error = mf_check_src(&out->zone_src, NULL); |
6431 | if (error) { | |
6432 | return error; | |
6433 | } | |
6434 | ||
6435 | if (out->zone_src.n_bits != 16) { | |
6436 | VLOG_WARN_RL(&rl, "zone n_bits %d not within valid range [16..16]", | |
6437 | out->zone_src.n_bits); | |
6438 | return OFPERR_OFPBAC_BAD_SET_LEN; | |
6439 | } | |
6440 | } else { | |
6441 | out->zone_src.field = NULL; | |
6442 | out->zone_imm = ntohs(nac->zone_imm); | |
6443 | } | |
6444 | ||
6445 | return 0; | |
6446 | } | |
6447 | ||
6448 | static enum ofperr | |
6449 | decode_NXAST_RAW_CT(const struct nx_action_conntrack *nac, | |
04f48a68 | 6450 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
6451 | const struct vl_mff_map *vl_mff_map, uint64_t *tlv_bitmap, |
6452 | struct ofpbuf *out) | |
07659514 | 6453 | { |
8e53fe8c | 6454 | const size_t ct_offset = ofpacts_pull(out); |
0a2869d5 | 6455 | struct ofpact_conntrack *conntrack = ofpact_put_CT(out); |
a76a37ef JR |
6456 | int error; |
6457 | ||
07659514 | 6458 | conntrack->flags = ntohs(nac->flags); |
a76a37ef JR |
6459 | if (conntrack->flags & NX_CT_F_FORCE && |
6460 | !(conntrack->flags & NX_CT_F_COMMIT)) { | |
6461 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6462 | goto out; | |
6463 | } | |
0a2869d5 | 6464 | |
5c7c16d8 | 6465 | error = decode_ct_zone(nac, conntrack, vl_mff_map, tlv_bitmap); |
07659514 JS |
6466 | if (error) { |
6467 | goto out; | |
6468 | } | |
6469 | conntrack->recirc_table = nac->recirc_table; | |
d787ad39 | 6470 | conntrack->alg = ntohs(nac->alg); |
07659514 | 6471 | |
8e53fe8c JS |
6472 | ofpbuf_pull(out, sizeof(*conntrack)); |
6473 | ||
0a2869d5 BP |
6474 | struct ofpbuf openflow = ofpbuf_const_initializer( |
6475 | nac + 1, ntohs(nac->len) - sizeof(*nac)); | |
8e53fe8c JS |
6476 | error = ofpacts_pull_openflow_actions__(&openflow, openflow.size, |
6477 | ofp_version, | |
6478 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
6479 | out, OFPACT_CT, vl_mff_map, |
6480 | tlv_bitmap); | |
8e53fe8c JS |
6481 | if (error) { |
6482 | goto out; | |
6483 | } | |
6484 | ||
6485 | conntrack = ofpbuf_push_uninit(out, sizeof(*conntrack)); | |
6486 | out->header = &conntrack->ofpact; | |
ce058104 | 6487 | ofpact_finish_CT(out, &conntrack); |
8e53fe8c JS |
6488 | |
6489 | if (conntrack->ofpact.len > sizeof(*conntrack) | |
6490 | && !(conntrack->flags & NX_CT_F_COMMIT)) { | |
9ac0aada JR |
6491 | const struct ofpact *a; |
6492 | size_t ofpacts_len = conntrack->ofpact.len - sizeof(*conntrack); | |
6493 | ||
6494 | OFPACT_FOR_EACH (a, conntrack->actions, ofpacts_len) { | |
6495 | if (a->type != OFPACT_NAT || ofpact_get_NAT(a)->flags | |
6496 | || ofpact_get_NAT(a)->range_af != AF_UNSPEC) { | |
6497 | VLOG_WARN_RL(&rl, "CT action requires commit flag if actions " | |
6498 | "other than NAT without arguments are specified."); | |
6499 | error = OFPERR_OFPBAC_BAD_ARGUMENT; | |
6500 | goto out; | |
6501 | } | |
6502 | } | |
8e53fe8c JS |
6503 | } |
6504 | ||
07659514 | 6505 | out: |
8e53fe8c | 6506 | ofpbuf_push_uninit(out, ct_offset); |
07659514 JS |
6507 | return error; |
6508 | } | |
6509 | ||
6510 | static void | |
6511 | encode_CT(const struct ofpact_conntrack *conntrack, | |
8e53fe8c | 6512 | enum ofp_version ofp_version, struct ofpbuf *out) |
07659514 JS |
6513 | { |
6514 | struct nx_action_conntrack *nac; | |
8e53fe8c JS |
6515 | const size_t ofs = out->size; |
6516 | size_t len; | |
07659514 JS |
6517 | |
6518 | nac = put_NXAST_CT(out); | |
6519 | nac->flags = htons(conntrack->flags); | |
6520 | if (conntrack->zone_src.field) { | |
04f48a68 | 6521 | nac->zone_src = htonl(nxm_header_from_mff(conntrack->zone_src.field)); |
07659514 JS |
6522 | nac->zone_ofs_nbits = nxm_encode_ofs_nbits(conntrack->zone_src.ofs, |
6523 | conntrack->zone_src.n_bits); | |
6524 | } else { | |
6525 | nac->zone_src = htonl(0); | |
6526 | nac->zone_imm = htons(conntrack->zone_imm); | |
6527 | } | |
6528 | nac->recirc_table = conntrack->recirc_table; | |
d787ad39 | 6529 | nac->alg = htons(conntrack->alg); |
8e53fe8c JS |
6530 | |
6531 | len = ofpacts_put_openflow_actions(conntrack->actions, | |
6532 | ofpact_ct_get_action_len(conntrack), | |
6533 | out, ofp_version); | |
6534 | len += sizeof(*nac); | |
6535 | nac = ofpbuf_at(out, ofs, sizeof(*nac)); | |
6536 | nac->len = htons(len); | |
07659514 JS |
6537 | } |
6538 | ||
50f96b10 | 6539 | static char *OVS_WARN_UNUSED_RESULT |
efefbcae | 6540 | parse_NAT(char *arg, const struct ofpact_parse_params *pp); |
9ac0aada | 6541 | |
07659514 | 6542 | /* Parses 'arg' as the argument to a "ct" action, and appends such an |
efefbcae | 6543 | * action to 'pp->ofpacts'. |
07659514 JS |
6544 | * |
6545 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
6546 | * error. The caller is responsible for freeing the returned string. */ | |
6547 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6548 | parse_CT(char *arg, const struct ofpact_parse_params *pp) |
07659514 | 6549 | { |
efefbcae | 6550 | const size_t ct_offset = ofpacts_pull(pp->ofpacts); |
07659514 JS |
6551 | struct ofpact_conntrack *oc; |
6552 | char *error = NULL; | |
6553 | char *key, *value; | |
6554 | ||
efefbcae | 6555 | oc = ofpact_put_CT(pp->ofpacts); |
07659514 JS |
6556 | oc->flags = 0; |
6557 | oc->recirc_table = NX_CT_RECIRC_NONE; | |
6558 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
6559 | if (!strcmp(key, "commit")) { | |
6560 | oc->flags |= NX_CT_F_COMMIT; | |
a76a37ef JR |
6561 | } else if (!strcmp(key, "force")) { |
6562 | oc->flags |= NX_CT_F_FORCE; | |
07659514 | 6563 | } else if (!strcmp(key, "table")) { |
4bc938cc BP |
6564 | if (!ofputil_table_from_string(value, pp->table_map, |
6565 | &oc->recirc_table)) { | |
6566 | error = xasprintf("unknown table %s", value); | |
6567 | } else if (oc->recirc_table == NX_CT_RECIRC_NONE) { | |
fd13c6b5 | 6568 | error = xasprintf("invalid table %#"PRIx8, oc->recirc_table); |
07659514 JS |
6569 | } |
6570 | } else if (!strcmp(key, "zone")) { | |
6571 | error = str_to_u16(value, "zone", &oc->zone_imm); | |
6572 | ||
6573 | if (error) { | |
6574 | free(error); | |
6575 | error = mf_parse_subfield(&oc->zone_src, value); | |
6576 | if (error) { | |
6577 | return error; | |
6578 | } | |
6579 | } | |
d787ad39 JS |
6580 | } else if (!strcmp(key, "alg")) { |
6581 | error = str_to_connhelper(value, &oc->alg); | |
9ac0aada | 6582 | } else if (!strcmp(key, "nat")) { |
efefbcae | 6583 | const size_t nat_offset = ofpacts_pull(pp->ofpacts); |
9ac0aada | 6584 | |
efefbcae | 6585 | error = parse_NAT(value, pp); |
9ac0aada | 6586 | /* Update CT action pointer and length. */ |
efefbcae BP |
6587 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, nat_offset); |
6588 | oc = pp->ofpacts->header; | |
8e53fe8c JS |
6589 | } else if (!strcmp(key, "exec")) { |
6590 | /* Hide existing actions from ofpacts_parse_copy(), so the | |
6591 | * nesting can be handled transparently. */ | |
76e3e669 | 6592 | enum ofputil_protocol usable_protocols2; |
efefbcae | 6593 | const size_t exec_offset = ofpacts_pull(pp->ofpacts); |
76e3e669 | 6594 | |
76e3e669 JR |
6595 | /* Initializes 'usable_protocol2', fold it back to |
6596 | * '*usable_protocols' afterwards, so that we do not lose | |
6597 | * restrictions already in there. */ | |
efefbcae BP |
6598 | struct ofpact_parse_params pp2 = *pp; |
6599 | pp2.usable_protocols = &usable_protocols2; | |
6600 | error = ofpacts_parse_copy(value, &pp2, false, OFPACT_CT); | |
6601 | *pp->usable_protocols &= usable_protocols2; | |
6602 | pp->ofpacts->header = ofpbuf_push_uninit(pp->ofpacts, exec_offset); | |
6603 | oc = pp->ofpacts->header; | |
07659514 JS |
6604 | } else { |
6605 | error = xasprintf("invalid argument to \"ct\" action: `%s'", key); | |
6606 | } | |
6607 | if (error) { | |
6608 | break; | |
6609 | } | |
6610 | } | |
fce16ca1 | 6611 | if (!error && oc->flags & NX_CT_F_FORCE && !(oc->flags & NX_CT_F_COMMIT)) { |
a76a37ef JR |
6612 | error = xasprintf("\"force\" flag requires \"commit\" flag."); |
6613 | } | |
efefbcae BP |
6614 | ofpact_finish_CT(pp->ofpacts, &oc); |
6615 | ofpbuf_push_uninit(pp->ofpacts, ct_offset); | |
07659514 JS |
6616 | return error; |
6617 | } | |
6618 | ||
d787ad39 JS |
6619 | static void |
6620 | format_alg(int port, struct ds *s) | |
6621 | { | |
40c7b2fc JS |
6622 | switch(port) { |
6623 | case IPPORT_FTP: | |
b1c5bf1f | 6624 | ds_put_format(s, "%salg=%sftp,", colors.param, colors.end); |
40c7b2fc JS |
6625 | break; |
6626 | case IPPORT_TFTP: | |
6627 | ds_put_format(s, "%salg=%stftp,", colors.param, colors.end); | |
6628 | break; | |
6629 | case 0: | |
6630 | /* Don't print. */ | |
6631 | break; | |
6632 | default: | |
b1c5bf1f | 6633 | ds_put_format(s, "%salg=%s%d,", colors.param, colors.end, port); |
40c7b2fc | 6634 | break; |
d787ad39 JS |
6635 | } |
6636 | } | |
6637 | ||
50f96b10 | 6638 | static void format_NAT(const struct ofpact_nat *, |
efefbcae | 6639 | const struct ofpact_format_params *fp); |
9ac0aada | 6640 | |
07659514 | 6641 | static void |
50f96b10 | 6642 | format_CT(const struct ofpact_conntrack *a, |
efefbcae | 6643 | const struct ofpact_format_params *fp) |
07659514 | 6644 | { |
efefbcae | 6645 | ds_put_format(fp->s, "%sct(%s", colors.paren, colors.end); |
07659514 | 6646 | if (a->flags & NX_CT_F_COMMIT) { |
efefbcae | 6647 | ds_put_format(fp->s, "%scommit%s,", colors.value, colors.end); |
07659514 | 6648 | } |
a76a37ef | 6649 | if (a->flags & NX_CT_F_FORCE) { |
efefbcae | 6650 | ds_put_format(fp->s, "%sforce%s,", colors.value, colors.end); |
a76a37ef | 6651 | } |
07659514 | 6652 | if (a->recirc_table != NX_CT_RECIRC_NONE) { |
4bc938cc BP |
6653 | ds_put_format(fp->s, "%stable=%s", colors.special, colors.end); |
6654 | ofputil_format_table(a->recirc_table, fp->table_map, fp->s); | |
6655 | ds_put_char(fp->s, ','); | |
07659514 JS |
6656 | } |
6657 | if (a->zone_src.field) { | |
efefbcae BP |
6658 | ds_put_format(fp->s, "%szone=%s", colors.param, colors.end); |
6659 | mf_format_subfield(&a->zone_src, fp->s); | |
6660 | ds_put_char(fp->s, ','); | |
07659514 | 6661 | } else if (a->zone_imm) { |
efefbcae | 6662 | ds_put_format(fp->s, "%szone=%s%"PRIu16",", |
b1c5bf1f | 6663 | colors.param, colors.end, a->zone_imm); |
07659514 | 6664 | } |
9ac0aada JR |
6665 | /* If the first action is a NAT action, format it outside of the 'exec' |
6666 | * envelope. */ | |
6667 | const struct ofpact *action = a->actions; | |
6668 | size_t actions_len = ofpact_ct_get_action_len(a); | |
6669 | if (actions_len && action->type == OFPACT_NAT) { | |
efefbcae BP |
6670 | format_NAT(ofpact_get_NAT(action), fp); |
6671 | ds_put_char(fp->s, ','); | |
9ac0aada JR |
6672 | actions_len -= OFPACT_ALIGN(action->len); |
6673 | action = ofpact_next(action); | |
6674 | } | |
6675 | if (actions_len) { | |
efefbcae BP |
6676 | ds_put_format(fp->s, "%sexec(%s", colors.paren, colors.end); |
6677 | ofpacts_format(action, actions_len, fp); | |
6678 | ds_put_format(fp->s, "%s),%s", colors.paren, colors.end); | |
8e53fe8c | 6679 | } |
efefbcae BP |
6680 | format_alg(a->alg, fp->s); |
6681 | ds_chomp(fp->s, ','); | |
6682 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
07659514 | 6683 | } |
ae6f7530 BP |
6684 | |
6685 | static enum ofperr | |
6686 | check_CT(struct ofpact_conntrack *a, struct ofpact_check_params *cp) | |
6687 | { | |
6688 | struct flow *flow = &cp->match->flow; | |
6689 | ||
6690 | if (!dl_type_is_ip_any(get_dl_type(flow)) | |
6691 | || (flow->ct_state & CS_INVALID && a->flags & NX_CT_F_COMMIT) | |
6692 | || (a->alg == IPPORT_FTP && flow->nw_proto != IPPROTO_TCP) | |
6693 | || (a->alg == IPPORT_TFTP && flow->nw_proto != IPPROTO_UDP)) { | |
6694 | /* We can't downgrade to OF1.0 and expect inconsistent CT actions | |
6695 | * be silently discarded. Instead, datapath flow install fails, so | |
6696 | * it is better to flag inconsistent CT actions as hard errors. */ | |
6697 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
6698 | } | |
6699 | ||
6700 | if (a->zone_src.field) { | |
6701 | return mf_check_src(&a->zone_src, cp->match); | |
6702 | } | |
6703 | ||
6704 | return check_subactions(a->actions, ofpact_ct_get_action_len(a), cp); | |
6705 | } | |
9ac0aada | 6706 | \f |
72fe7578 BP |
6707 | /* ct_clear action. */ |
6708 | ||
6709 | static enum ofperr | |
6710 | decode_NXAST_RAW_CT_CLEAR(struct ofpbuf *out) | |
6711 | { | |
6712 | ofpact_put_CT_CLEAR(out); | |
6713 | return 0; | |
6714 | } | |
6715 | ||
6716 | static void | |
6717 | encode_CT_CLEAR(const struct ofpact_null *null OVS_UNUSED, | |
6718 | enum ofp_version ofp_version OVS_UNUSED, | |
6719 | struct ofpbuf *out) | |
6720 | { | |
6721 | put_NXAST_CT_CLEAR(out); | |
6722 | } | |
6723 | ||
6724 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 6725 | parse_CT_CLEAR(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
72fe7578 | 6726 | { |
efefbcae | 6727 | ofpact_put_CT_CLEAR(pp->ofpacts); |
72fe7578 BP |
6728 | return NULL; |
6729 | } | |
6730 | ||
6731 | static void | |
50f96b10 | 6732 | format_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 6733 | const struct ofpact_format_params *fp) |
72fe7578 | 6734 | { |
efefbcae | 6735 | ds_put_format(fp->s, "%sct_clear%s", colors.value, colors.end); |
50f96b10 | 6736 | } |
ae6f7530 BP |
6737 | |
6738 | static enum ofperr | |
6739 | check_CT_CLEAR(const struct ofpact_null *a OVS_UNUSED, | |
6740 | const struct ofpact_check_params *cp OVS_UNUSED) | |
6741 | { | |
6742 | return 0; | |
6743 | } | |
50f96b10 | 6744 | \f |
9ac0aada JR |
6745 | /* NAT action. */ |
6746 | ||
6747 | /* Which optional fields are present? */ | |
6748 | enum nx_nat_range { | |
6749 | NX_NAT_RANGE_IPV4_MIN = 1 << 0, /* ovs_be32 */ | |
6750 | NX_NAT_RANGE_IPV4_MAX = 1 << 1, /* ovs_be32 */ | |
6751 | NX_NAT_RANGE_IPV6_MIN = 1 << 2, /* struct in6_addr */ | |
6752 | NX_NAT_RANGE_IPV6_MAX = 1 << 3, /* struct in6_addr */ | |
6753 | NX_NAT_RANGE_PROTO_MIN = 1 << 4, /* ovs_be16 */ | |
6754 | NX_NAT_RANGE_PROTO_MAX = 1 << 5, /* ovs_be16 */ | |
6755 | }; | |
6756 | ||
6757 | /* Action structure for NXAST_NAT. */ | |
6758 | struct nx_action_nat { | |
6759 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
6760 | ovs_be16 len; /* At least 16. */ | |
6761 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
6762 | ovs_be16 subtype; /* NXAST_NAT. */ | |
6763 | uint8_t pad[2]; /* Must be zero. */ | |
6764 | ovs_be16 flags; /* Zero or more NX_NAT_F_* flags. | |
6765 | * Unspecified flag bits must be zero. */ | |
6766 | ovs_be16 range_present; /* NX_NAT_RANGE_* */ | |
6767 | /* Followed by optional parameters as specified by 'range_present' */ | |
6768 | }; | |
6769 | OFP_ASSERT(sizeof(struct nx_action_nat) == 16); | |
6770 | ||
6771 | static void | |
6772 | encode_NAT(const struct ofpact_nat *nat, | |
6773 | enum ofp_version ofp_version OVS_UNUSED, | |
6774 | struct ofpbuf *out) | |
6775 | { | |
6776 | struct nx_action_nat *nan; | |
6777 | const size_t ofs = out->size; | |
6778 | uint16_t range_present = 0; | |
6779 | ||
6780 | nan = put_NXAST_NAT(out); | |
6781 | nan->flags = htons(nat->flags); | |
6782 | if (nat->range_af == AF_INET) { | |
6783 | if (nat->range.addr.ipv4.min) { | |
6784 | ovs_be32 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6785 | *min = nat->range.addr.ipv4.min; | |
6786 | range_present |= NX_NAT_RANGE_IPV4_MIN; | |
6787 | } | |
6788 | if (nat->range.addr.ipv4.max) { | |
6789 | ovs_be32 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6790 | *max = nat->range.addr.ipv4.max; | |
6791 | range_present |= NX_NAT_RANGE_IPV4_MAX; | |
6792 | } | |
6793 | } else if (nat->range_af == AF_INET6) { | |
6794 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6795 | struct in6_addr *min = ofpbuf_put_uninit(out, sizeof *min); | |
6796 | *min = nat->range.addr.ipv6.min; | |
6797 | range_present |= NX_NAT_RANGE_IPV6_MIN; | |
6798 | } | |
6799 | if (!ipv6_mask_is_any(&nat->range.addr.ipv6.max)) { | |
6800 | struct in6_addr *max = ofpbuf_put_uninit(out, sizeof *max); | |
6801 | *max = nat->range.addr.ipv6.max; | |
6802 | range_present |= NX_NAT_RANGE_IPV6_MAX; | |
6803 | } | |
6804 | } | |
6805 | if (nat->range_af != AF_UNSPEC) { | |
6806 | if (nat->range.proto.min) { | |
6807 | ovs_be16 *min = ofpbuf_put_uninit(out, sizeof *min); | |
6808 | *min = htons(nat->range.proto.min); | |
6809 | range_present |= NX_NAT_RANGE_PROTO_MIN; | |
6810 | } | |
6811 | if (nat->range.proto.max) { | |
6812 | ovs_be16 *max = ofpbuf_put_uninit(out, sizeof *max); | |
6813 | *max = htons(nat->range.proto.max); | |
6814 | range_present |= NX_NAT_RANGE_PROTO_MAX; | |
6815 | } | |
6816 | } | |
6817 | pad_ofpat(out, ofs); | |
6818 | nan = ofpbuf_at(out, ofs, sizeof *nan); | |
6819 | nan->range_present = htons(range_present); | |
6820 | } | |
6821 | ||
6822 | static enum ofperr | |
6823 | decode_NXAST_RAW_NAT(const struct nx_action_nat *nan, | |
6824 | enum ofp_version ofp_version OVS_UNUSED, | |
6825 | struct ofpbuf *out) | |
6826 | { | |
6827 | struct ofpact_nat *nat; | |
6828 | uint16_t range_present = ntohs(nan->range_present); | |
6829 | const char *opts = (char *)(nan + 1); | |
6830 | uint16_t len = ntohs(nan->len) - sizeof *nan; | |
6831 | ||
6832 | nat = ofpact_put_NAT(out); | |
6833 | nat->flags = ntohs(nan->flags); | |
6834 | ||
ae8b9260 JR |
6835 | /* Check for unknown or mutually exclusive flags. */ |
6836 | if ((nat->flags & ~NX_NAT_F_MASK) | |
6837 | || (nat->flags & NX_NAT_F_SRC && nat->flags & NX_NAT_F_DST) | |
6838 | || (nat->flags & NX_NAT_F_PROTO_HASH | |
6839 | && nat->flags & NX_NAT_F_PROTO_RANDOM)) { | |
6840 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6841 | } | |
6842 | ||
9ac0aada JR |
6843 | #define NX_NAT_GET_OPT(DST, SRC, LEN, TYPE) \ |
6844 | (LEN >= sizeof(TYPE) \ | |
6845 | ? (memcpy(DST, SRC, sizeof(TYPE)), LEN -= sizeof(TYPE), \ | |
6846 | SRC += sizeof(TYPE)) \ | |
6847 | : NULL) | |
6848 | ||
6849 | nat->range_af = AF_UNSPEC; | |
6850 | if (range_present & NX_NAT_RANGE_IPV4_MIN) { | |
6851 | if (range_present & (NX_NAT_RANGE_IPV6_MIN | NX_NAT_RANGE_IPV6_MAX)) { | |
6852 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6853 | } | |
6854 | ||
6855 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.min, opts, len, ovs_be32) | |
6856 | || !nat->range.addr.ipv4.min) { | |
6857 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6858 | } | |
6859 | ||
6860 | nat->range_af = AF_INET; | |
6861 | ||
6862 | if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6863 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv4.max, opts, len, | |
6864 | ovs_be32)) { | |
6865 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6866 | } | |
6867 | if (ntohl(nat->range.addr.ipv4.max) | |
6868 | < ntohl(nat->range.addr.ipv4.min)) { | |
6869 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6870 | } | |
6871 | } | |
6872 | } else if (range_present & NX_NAT_RANGE_IPV4_MAX) { | |
6873 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6874 | } else if (range_present & NX_NAT_RANGE_IPV6_MIN) { | |
6875 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.min, opts, len, | |
6876 | struct in6_addr) | |
6877 | || ipv6_mask_is_any(&nat->range.addr.ipv6.min)) { | |
6878 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6879 | } | |
6880 | ||
6881 | nat->range_af = AF_INET6; | |
6882 | ||
6883 | if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6884 | if (!NX_NAT_GET_OPT(&nat->range.addr.ipv6.max, opts, len, | |
6885 | struct in6_addr)) { | |
6886 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6887 | } | |
6888 | if (memcmp(&nat->range.addr.ipv6.max, &nat->range.addr.ipv6.min, | |
6889 | sizeof(struct in6_addr)) < 0) { | |
6890 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6891 | } | |
6892 | } | |
6893 | } else if (range_present & NX_NAT_RANGE_IPV6_MAX) { | |
6894 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6895 | } | |
6896 | ||
6897 | if (range_present & NX_NAT_RANGE_PROTO_MIN) { | |
6898 | ovs_be16 proto; | |
6899 | ||
6900 | if (nat->range_af == AF_UNSPEC) { | |
6901 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6902 | } | |
6903 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16) || proto == 0) { | |
6904 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6905 | } | |
6906 | nat->range.proto.min = ntohs(proto); | |
6907 | if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6908 | if (!NX_NAT_GET_OPT(&proto, opts, len, ovs_be16)) { | |
6909 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6910 | } | |
6911 | nat->range.proto.max = ntohs(proto); | |
6912 | if (nat->range.proto.max < nat->range.proto.min) { | |
6913 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6914 | } | |
6915 | } | |
6916 | } else if (range_present & NX_NAT_RANGE_PROTO_MAX) { | |
6917 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6918 | } | |
6919 | ||
6920 | return 0; | |
6921 | } | |
6922 | ||
6923 | static void | |
efefbcae | 6924 | format_NAT(const struct ofpact_nat *a, const struct ofpact_format_params *fp) |
9ac0aada | 6925 | { |
efefbcae | 6926 | ds_put_format(fp->s, "%snat%s", colors.paren, colors.end); |
9ac0aada JR |
6927 | |
6928 | if (a->flags & (NX_NAT_F_SRC | NX_NAT_F_DST)) { | |
efefbcae BP |
6929 | ds_put_format(fp->s, "%s(%s", colors.paren, colors.end); |
6930 | ds_put_format(fp->s, a->flags & NX_NAT_F_SRC ? "%ssrc%s" : "%sdst%s", | |
b1c5bf1f | 6931 | colors.param, colors.end); |
9ac0aada JR |
6932 | |
6933 | if (a->range_af != AF_UNSPEC) { | |
efefbcae | 6934 | ds_put_format(fp->s, "%s=%s", colors.param, colors.end); |
9ac0aada JR |
6935 | |
6936 | if (a->range_af == AF_INET) { | |
efefbcae | 6937 | ds_put_format(fp->s, IP_FMT, IP_ARGS(a->range.addr.ipv4.min)); |
9ac0aada JR |
6938 | |
6939 | if (a->range.addr.ipv4.max | |
6940 | && a->range.addr.ipv4.max != a->range.addr.ipv4.min) { | |
efefbcae | 6941 | ds_put_format(fp->s, "-"IP_FMT, |
9ac0aada JR |
6942 | IP_ARGS(a->range.addr.ipv4.max)); |
6943 | } | |
6944 | } else if (a->range_af == AF_INET6) { | |
efefbcae | 6945 | ipv6_format_addr_bracket(&a->range.addr.ipv6.min, fp->s, |
9ac0aada JR |
6946 | a->range.proto.min); |
6947 | ||
6948 | if (!ipv6_mask_is_any(&a->range.addr.ipv6.max) | |
6949 | && memcmp(&a->range.addr.ipv6.max, &a->range.addr.ipv6.min, | |
6950 | sizeof(struct in6_addr)) != 0) { | |
efefbcae BP |
6951 | ds_put_char(fp->s, '-'); |
6952 | ipv6_format_addr_bracket(&a->range.addr.ipv6.max, fp->s, | |
9ac0aada JR |
6953 | a->range.proto.min); |
6954 | } | |
6955 | } | |
6956 | if (a->range.proto.min) { | |
efefbcae BP |
6957 | ds_put_char(fp->s, ':'); |
6958 | ds_put_format(fp->s, "%"PRIu16, a->range.proto.min); | |
9ac0aada JR |
6959 | |
6960 | if (a->range.proto.max | |
6961 | && a->range.proto.max != a->range.proto.min) { | |
efefbcae | 6962 | ds_put_format(fp->s, "-%"PRIu16, a->range.proto.max); |
9ac0aada JR |
6963 | } |
6964 | } | |
efefbcae | 6965 | ds_put_char(fp->s, ','); |
9ac0aada JR |
6966 | |
6967 | if (a->flags & NX_NAT_F_PERSISTENT) { | |
efefbcae | 6968 | ds_put_format(fp->s, "%spersistent%s,", |
b1c5bf1f | 6969 | colors.value, colors.end); |
9ac0aada JR |
6970 | } |
6971 | if (a->flags & NX_NAT_F_PROTO_HASH) { | |
efefbcae | 6972 | ds_put_format(fp->s, "%shash%s,", colors.value, colors.end); |
9ac0aada JR |
6973 | } |
6974 | if (a->flags & NX_NAT_F_PROTO_RANDOM) { | |
efefbcae | 6975 | ds_put_format(fp->s, "%srandom%s,", colors.value, colors.end); |
9ac0aada JR |
6976 | } |
6977 | } | |
efefbcae BP |
6978 | ds_chomp(fp->s, ','); |
6979 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
9ac0aada JR |
6980 | } |
6981 | } | |
6982 | ||
6983 | static char * OVS_WARN_UNUSED_RESULT | |
6984 | str_to_nat_range(const char *s, struct ofpact_nat *on) | |
6985 | { | |
6986 | char ipv6_s[IPV6_SCAN_LEN + 1]; | |
6987 | int n = 0; | |
6988 | ||
6989 | on->range_af = AF_UNSPEC; | |
6990 | if (ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6991 | IP_SCAN_ARGS(&on->range.addr.ipv4.min))) { | |
6992 | on->range_af = AF_INET; | |
6993 | ||
6994 | if (s[n] == '-') { | |
6995 | n++; | |
6996 | if (!ovs_scan_len(s, &n, IP_SCAN_FMT, | |
6997 | IP_SCAN_ARGS(&on->range.addr.ipv4.max)) | |
6998 | || (ntohl(on->range.addr.ipv4.max) | |
6999 | < ntohl(on->range.addr.ipv4.min))) { | |
7000 | goto error; | |
7001 | } | |
7002 | } | |
7003 | } else if ((ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
7004 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
7005 | && inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.min) == 1) { | |
7006 | on->range_af = AF_INET6; | |
7007 | ||
7008 | if (s[n] == '-') { | |
7009 | n++; | |
7010 | if (!(ovs_scan_len(s, &n, IPV6_SCAN_FMT, ipv6_s) | |
7011 | || ovs_scan_len(s, &n, "["IPV6_SCAN_FMT"]", ipv6_s)) | |
7012 | || inet_pton(AF_INET6, ipv6_s, &on->range.addr.ipv6.max) != 1 | |
7013 | || memcmp(&on->range.addr.ipv6.max, &on->range.addr.ipv6.min, | |
7014 | sizeof on->range.addr.ipv6.max) < 0) { | |
7015 | goto error; | |
7016 | } | |
7017 | } | |
7018 | } | |
7019 | if (on->range_af != AF_UNSPEC && s[n] == ':') { | |
7020 | n++; | |
7021 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.min)) { | |
7022 | goto error; | |
7023 | } | |
7024 | if (s[n] == '-') { | |
7025 | n++; | |
7026 | if (!ovs_scan_len(s, &n, "%"SCNu16, &on->range.proto.max) | |
7027 | || on->range.proto.max < on->range.proto.min) { | |
7028 | goto error; | |
7029 | } | |
7030 | } | |
7031 | } | |
7032 | if (strlen(s) != n) { | |
7033 | return xasprintf("garbage (%s) after nat range \"%s\" (pos: %d)", | |
7034 | &s[n], s, n); | |
7035 | } | |
7036 | return NULL; | |
7037 | error: | |
7038 | return xasprintf("invalid nat range \"%s\"", s); | |
7039 | } | |
7040 | ||
7041 | ||
7042 | /* Parses 'arg' as the argument to a "nat" action, and appends such an | |
efefbcae | 7043 | * action to 'pp->ofpacts'. |
9ac0aada JR |
7044 | * |
7045 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
7046 | * error. The caller is responsible for freeing the returned string. */ | |
7047 | static char * OVS_WARN_UNUSED_RESULT | |
efefbcae | 7048 | parse_NAT(char *arg, const struct ofpact_parse_params *pp) |
9ac0aada | 7049 | { |
efefbcae | 7050 | struct ofpact_nat *on = ofpact_put_NAT(pp->ofpacts); |
9ac0aada JR |
7051 | char *key, *value; |
7052 | ||
7053 | on->flags = 0; | |
7054 | on->range_af = AF_UNSPEC; | |
7055 | ||
7056 | while (ofputil_parse_key_value(&arg, &key, &value)) { | |
7057 | char *error = NULL; | |
7058 | ||
7059 | if (!strcmp(key, "src")) { | |
7060 | on->flags |= NX_NAT_F_SRC; | |
7061 | error = str_to_nat_range(value, on); | |
7062 | } else if (!strcmp(key, "dst")) { | |
7063 | on->flags |= NX_NAT_F_DST; | |
7064 | error = str_to_nat_range(value, on); | |
7065 | } else if (!strcmp(key, "persistent")) { | |
7066 | on->flags |= NX_NAT_F_PERSISTENT; | |
7067 | } else if (!strcmp(key, "hash")) { | |
7068 | on->flags |= NX_NAT_F_PROTO_HASH; | |
7069 | } else if (!strcmp(key, "random")) { | |
7070 | on->flags |= NX_NAT_F_PROTO_RANDOM; | |
7071 | } else { | |
7072 | error = xasprintf("invalid key \"%s\" in \"nat\" argument", | |
7073 | key); | |
7074 | } | |
7075 | if (error) { | |
7076 | return error; | |
7077 | } | |
7078 | } | |
7079 | if (on->flags & NX_NAT_F_SRC && on->flags & NX_NAT_F_DST) { | |
ae8b9260 | 7080 | return xasprintf("May only specify one of \"src\" or \"dst\"."); |
9ac0aada JR |
7081 | } |
7082 | if (!(on->flags & NX_NAT_F_SRC || on->flags & NX_NAT_F_DST)) { | |
7083 | if (on->flags) { | |
ae8b9260 | 7084 | return xasprintf("Flags allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
7085 | } |
7086 | if (on->range_af != AF_UNSPEC) { | |
ae8b9260 | 7087 | return xasprintf("Range allowed only with \"src\" or \"dst\"."); |
9ac0aada JR |
7088 | } |
7089 | } | |
ae8b9260 JR |
7090 | if (on->flags & NX_NAT_F_PROTO_HASH && on->flags & NX_NAT_F_PROTO_RANDOM) { |
7091 | return xasprintf("Both \"hash\" and \"random\" are not allowed."); | |
7092 | } | |
7093 | ||
9ac0aada JR |
7094 | return NULL; |
7095 | } | |
7096 | ||
ae6f7530 BP |
7097 | static enum ofperr |
7098 | check_NAT(const struct ofpact_nat *a, const struct ofpact_check_params *cp) | |
7099 | { | |
7100 | ovs_be16 dl_type = get_dl_type(&cp->match->flow); | |
7101 | if (!dl_type_is_ip_any(dl_type) || | |
7102 | (a->range_af == AF_INET && dl_type != htons(ETH_TYPE_IP)) || | |
7103 | (a->range_af == AF_INET6 && dl_type != htons(ETH_TYPE_IPV6))) { | |
7104 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
7105 | } | |
7106 | return 0; | |
7107 | } | |
7108 | \f | |
aaca4fe0 WT |
7109 | /* Truncate output action. */ |
7110 | struct nx_action_output_trunc { | |
7111 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
7112 | ovs_be16 len; /* At least 16. */ | |
7113 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
7114 | ovs_be16 subtype; /* NXAST_OUTPUT_TRUNC. */ | |
7115 | ovs_be16 port; /* Output port */ | |
7116 | ovs_be32 max_len; /* Truncate packet to size bytes */ | |
7117 | }; | |
7118 | OFP_ASSERT(sizeof(struct nx_action_output_trunc) == 16); | |
7119 | ||
7120 | static enum ofperr | |
7121 | decode_NXAST_RAW_OUTPUT_TRUNC(const struct nx_action_output_trunc *natrc, | |
7122 | enum ofp_version ofp_version OVS_UNUSED, | |
7123 | struct ofpbuf *out) | |
7124 | { | |
7125 | struct ofpact_output_trunc *output_trunc; | |
7126 | ||
7127 | output_trunc = ofpact_put_OUTPUT_TRUNC(out); | |
7128 | output_trunc->max_len = ntohl(natrc->max_len); | |
7129 | output_trunc->port = u16_to_ofp(ntohs(natrc->port)); | |
7130 | ||
7131 | if (output_trunc->max_len < ETH_HEADER_LEN) { | |
7132 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
7133 | } | |
7134 | return 0; | |
7135 | } | |
7136 | ||
7137 | static void | |
7138 | encode_OUTPUT_TRUNC(const struct ofpact_output_trunc *output_trunc, | |
7139 | enum ofp_version ofp_version OVS_UNUSED, | |
7140 | struct ofpbuf *out) | |
7141 | { | |
7142 | struct nx_action_output_trunc *natrc = put_NXAST_OUTPUT_TRUNC(out); | |
7143 | ||
7144 | natrc->max_len = htonl(output_trunc->max_len); | |
7145 | natrc->port = htons(ofp_to_u16(output_trunc->port)); | |
7146 | } | |
7147 | ||
7148 | static char * OVS_WARN_UNUSED_RESULT | |
50f96b10 | 7149 | parse_OUTPUT_TRUNC(const char *arg, |
efefbcae | 7150 | const struct ofpact_parse_params *pp OVS_UNUSED) |
aaca4fe0 WT |
7151 | { |
7152 | /* Disable output_trunc parsing. Expose as output(port=N,max_len=M) and | |
7153 | * reuse parse_OUTPUT to parse output_trunc action. */ | |
7154 | return xasprintf("unknown action %s", arg); | |
7155 | } | |
7156 | ||
7157 | static void | |
50f96b10 | 7158 | format_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, |
efefbcae | 7159 | const struct ofpact_format_params *fp) |
aaca4fe0 | 7160 | { |
efefbcae BP |
7161 | ds_put_format(fp->s, "%soutput%s(port=", colors.special, colors.end); |
7162 | ofputil_format_port(a->port, fp->port_map, fp->s); | |
7163 | ds_put_format(fp->s, ",max_len=%"PRIu32")", a->max_len); | |
aaca4fe0 WT |
7164 | } |
7165 | ||
ae6f7530 BP |
7166 | static enum ofperr |
7167 | check_OUTPUT_TRUNC(const struct ofpact_output_trunc *a, | |
7168 | const struct ofpact_check_params *cp) | |
7169 | { | |
7170 | return ofpact_check_output_port(a->port, cp->max_ports); | |
7171 | } | |
d4abaff5 | 7172 | \f |
c2d936a4 BP |
7173 | /* Meter instruction. */ |
7174 | ||
7175 | static void | |
7176 | encode_METER(const struct ofpact_meter *meter, | |
7177 | enum ofp_version ofp_version, struct ofpbuf *out) | |
7178 | { | |
7179 | if (ofp_version >= OFP13_VERSION) { | |
7180 | instruction_put_OFPIT13_METER(out)->meter_id = htonl(meter->meter_id); | |
7181 | } | |
7182 | } | |
7183 | ||
cab50449 | 7184 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7185 | parse_METER(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 7186 | { |
efefbcae BP |
7187 | *pp->usable_protocols &= OFPUTIL_P_OF13_UP; |
7188 | return str_to_u32(arg, &ofpact_put_METER(pp->ofpacts)->meter_id); | |
c2d936a4 BP |
7189 | } |
7190 | ||
7191 | static void | |
50f96b10 | 7192 | format_METER(const struct ofpact_meter *a, |
efefbcae | 7193 | const struct ofpact_format_params *fp) |
c2d936a4 | 7194 | { |
efefbcae | 7195 | ds_put_format(fp->s, "%smeter:%s%"PRIu32, |
b1c5bf1f | 7196 | colors.param, colors.end, a->meter_id); |
c2d936a4 | 7197 | } |
ae6f7530 BP |
7198 | |
7199 | static enum ofperr | |
7200 | check_METER(const struct ofpact_meter *a, | |
7201 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7202 | { | |
7203 | uint32_t mid = a->meter_id; | |
7204 | return mid == 0 || mid > OFPM13_MAX ? OFPERR_OFPMMFC_INVALID_METER : 0; | |
7205 | } | |
c2d936a4 BP |
7206 | \f |
7207 | /* Clear-Actions instruction. */ | |
7208 | ||
7209 | static void | |
7210 | encode_CLEAR_ACTIONS(const struct ofpact_null *null OVS_UNUSED, | |
7211 | enum ofp_version ofp_version OVS_UNUSED, | |
7212 | struct ofpbuf *out OVS_UNUSED) | |
7213 | { | |
7214 | if (ofp_version > OFP10_VERSION) { | |
7215 | instruction_put_OFPIT11_CLEAR_ACTIONS(out); | |
7216 | } | |
7217 | } | |
7218 | ||
cab50449 | 7219 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7220 | parse_CLEAR_ACTIONS(char *arg OVS_UNUSED, const struct ofpact_parse_params *pp) |
c2d936a4 | 7221 | { |
efefbcae | 7222 | ofpact_put_CLEAR_ACTIONS(pp->ofpacts); |
c2d936a4 BP |
7223 | return NULL; |
7224 | } | |
7225 | ||
7226 | static void | |
50f96b10 | 7227 | format_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, |
efefbcae | 7228 | const struct ofpact_format_params *fp) |
c2d936a4 | 7229 | { |
efefbcae | 7230 | ds_put_format(fp->s, "%sclear_actions%s", colors.value, colors.end); |
c2d936a4 | 7231 | } |
ae6f7530 BP |
7232 | |
7233 | static enum ofperr | |
7234 | check_CLEAR_ACTIONS(const struct ofpact_null *a OVS_UNUSED, | |
7235 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7236 | { | |
7237 | return 0; | |
7238 | } | |
c2d936a4 BP |
7239 | \f |
7240 | /* Write-Actions instruction. */ | |
7241 | ||
7242 | static void | |
7243 | encode_WRITE_ACTIONS(const struct ofpact_nest *actions, | |
7244 | enum ofp_version ofp_version, struct ofpbuf *out) | |
7245 | { | |
7246 | if (ofp_version > OFP10_VERSION) { | |
6fd6ed71 | 7247 | const size_t ofs = out->size; |
c2d936a4 BP |
7248 | |
7249 | instruction_put_OFPIT11_WRITE_ACTIONS(out); | |
7250 | ofpacts_put_openflow_actions(actions->actions, | |
7251 | ofpact_nest_get_action_len(actions), | |
7252 | out, ofp_version); | |
7253 | ofpacts_update_instruction_actions(out, ofs); | |
7254 | } | |
7255 | } | |
7256 | ||
cab50449 | 7257 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7258 | parse_WRITE_ACTIONS(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 7259 | { |
efefbcae | 7260 | size_t ofs = ofpacts_pull(pp->ofpacts); |
c2d936a4 BP |
7261 | struct ofpact_nest *on; |
7262 | char *error; | |
c2d936a4 BP |
7263 | |
7264 | /* Add a Write-Actions instruction and then pull it off. */ | |
efefbcae BP |
7265 | ofpact_put(pp->ofpacts, OFPACT_WRITE_ACTIONS, sizeof *on); |
7266 | ofpbuf_pull(pp->ofpacts, sizeof *on); | |
c2d936a4 BP |
7267 | |
7268 | /* Parse nested actions. | |
7269 | * | |
7270 | * We pulled off "write-actions" and the previous actions because the | |
7271 | * OFPACT_WRITE_ACTIONS is only partially constructed: its length is such | |
7272 | * that it doesn't actually include the nested actions. That means that | |
7273 | * ofpacts_parse() would reject them as being part of an Apply-Actions that | |
7274 | * follows a Write-Actions, which is an invalid order. */ | |
efefbcae | 7275 | error = ofpacts_parse(arg, pp, false, OFPACT_WRITE_ACTIONS); |
c2d936a4 BP |
7276 | |
7277 | /* Put the Write-Actions back on and update its length. */ | |
efefbcae BP |
7278 | on = ofpbuf_push_uninit(pp->ofpacts, sizeof *on); |
7279 | on->ofpact.len = pp->ofpacts->size; | |
c2d936a4 BP |
7280 | |
7281 | /* Put any previous actions or instructions back on. */ | |
efefbcae | 7282 | ofpbuf_push_uninit(pp->ofpacts, ofs); |
c2d936a4 BP |
7283 | |
7284 | return error; | |
7285 | } | |
7286 | ||
7287 | static void | |
50f96b10 | 7288 | format_WRITE_ACTIONS(const struct ofpact_nest *a, |
efefbcae | 7289 | const struct ofpact_format_params *fp) |
c2d936a4 | 7290 | { |
efefbcae BP |
7291 | ds_put_format(fp->s, "%swrite_actions(%s", colors.paren, colors.end); |
7292 | ofpacts_format(a->actions, ofpact_nest_get_action_len(a), fp); | |
7293 | ds_put_format(fp->s, "%s)%s", colors.paren, colors.end); | |
c2d936a4 | 7294 | } |
ae6f7530 BP |
7295 | |
7296 | static enum ofperr | |
7297 | check_WRITE_ACTIONS(struct ofpact_nest *a, | |
7298 | const struct ofpact_check_params *cp) | |
7299 | { | |
7300 | /* Use a temporary copy of 'cp' to avoid updating 'cp->usable_protocols', | |
7301 | * since we can't check consistency of an action set. */ | |
7302 | struct ofpact_check_params tmp = *cp; | |
7303 | return ofpacts_check(a->actions, ofpact_nest_get_action_len(a), &tmp); | |
7304 | } | |
c2d936a4 BP |
7305 | \f |
7306 | /* Action structure for NXAST_WRITE_METADATA. | |
7307 | * | |
7308 | * Modifies the 'mask' bits of the metadata value. */ | |
7309 | struct nx_action_write_metadata { | |
7310 | ovs_be16 type; /* OFPAT_VENDOR. */ | |
7311 | ovs_be16 len; /* Length is 32. */ | |
7312 | ovs_be32 vendor; /* NX_VENDOR_ID. */ | |
7313 | ovs_be16 subtype; /* NXAST_WRITE_METADATA. */ | |
7314 | uint8_t zeros[6]; /* Must be zero. */ | |
7315 | ovs_be64 metadata; /* Metadata register. */ | |
7316 | ovs_be64 mask; /* Metadata mask. */ | |
7317 | }; | |
7318 | OFP_ASSERT(sizeof(struct nx_action_write_metadata) == 32); | |
7319 | ||
7320 | static enum ofperr | |
7321 | decode_NXAST_RAW_WRITE_METADATA(const struct nx_action_write_metadata *nawm, | |
f3cd3ac7 | 7322 | enum ofp_version ofp_version OVS_UNUSED, |
c2d936a4 BP |
7323 | struct ofpbuf *out) |
7324 | { | |
7325 | struct ofpact_metadata *om; | |
7326 | ||
7327 | if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) { | |
7328 | return OFPERR_NXBRC_MUST_BE_ZERO; | |
7329 | } | |
7330 | ||
7331 | om = ofpact_put_WRITE_METADATA(out); | |
7332 | om->metadata = nawm->metadata; | |
7333 | om->mask = nawm->mask; | |
7334 | ||
7335 | return 0; | |
7336 | } | |
7337 | ||
7338 | static void | |
7339 | encode_WRITE_METADATA(const struct ofpact_metadata *metadata, | |
7340 | enum ofp_version ofp_version, struct ofpbuf *out) | |
7341 | { | |
7342 | if (ofp_version == OFP10_VERSION) { | |
7343 | struct nx_action_write_metadata *nawm; | |
7344 | ||
7345 | nawm = put_NXAST_WRITE_METADATA(out); | |
7346 | nawm->metadata = metadata->metadata; | |
7347 | nawm->mask = metadata->mask; | |
7348 | } else { | |
7349 | struct ofp11_instruction_write_metadata *oiwm; | |
7350 | ||
7351 | oiwm = instruction_put_OFPIT11_WRITE_METADATA(out); | |
7352 | oiwm->metadata = metadata->metadata; | |
7353 | oiwm->metadata_mask = metadata->mask; | |
7354 | } | |
7355 | } | |
7356 | ||
cab50449 | 7357 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7358 | parse_WRITE_METADATA(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 BP |
7359 | { |
7360 | struct ofpact_metadata *om; | |
7361 | char *mask = strchr(arg, '/'); | |
7362 | ||
efefbcae | 7363 | *pp->usable_protocols &= OFPUTIL_P_NXM_OF11_UP; |
c2d936a4 | 7364 | |
efefbcae | 7365 | om = ofpact_put_WRITE_METADATA(pp->ofpacts); |
c2d936a4 BP |
7366 | if (mask) { |
7367 | char *error; | |
7368 | ||
7369 | *mask = '\0'; | |
7370 | error = str_to_be64(mask + 1, &om->mask); | |
7371 | if (error) { | |
7372 | return error; | |
7373 | } | |
7374 | } else { | |
7375 | om->mask = OVS_BE64_MAX; | |
7376 | } | |
7377 | ||
7378 | return str_to_be64(arg, &om->metadata); | |
7379 | } | |
7380 | ||
7381 | static void | |
50f96b10 | 7382 | format_WRITE_METADATA(const struct ofpact_metadata *a, |
efefbcae | 7383 | const struct ofpact_format_params *fp) |
c2d936a4 | 7384 | { |
efefbcae | 7385 | ds_put_format(fp->s, "%swrite_metadata:%s%#"PRIx64, |
b1c5bf1f | 7386 | colors.param, colors.end, ntohll(a->metadata)); |
c2d936a4 | 7387 | if (a->mask != OVS_BE64_MAX) { |
efefbcae | 7388 | ds_put_format(fp->s, "/%#"PRIx64, ntohll(a->mask)); |
c2d936a4 | 7389 | } |
4cceacb9 | 7390 | } |
ae6f7530 BP |
7391 | |
7392 | static enum ofperr | |
7393 | check_WRITE_METADATA(const struct ofpact_metadata *a OVS_UNUSED, | |
7394 | const struct ofpact_check_params *cp OVS_UNUSED) | |
7395 | { | |
7396 | return 0; | |
7397 | } | |
f25d0cf3 | 7398 | \f |
c2d936a4 | 7399 | /* Goto-Table instruction. */ |
f25d0cf3 BP |
7400 | |
7401 | static void | |
c2d936a4 BP |
7402 | encode_GOTO_TABLE(const struct ofpact_goto_table *goto_table, |
7403 | enum ofp_version ofp_version, struct ofpbuf *out) | |
f25d0cf3 | 7404 | { |
c2d936a4 BP |
7405 | if (ofp_version == OFP10_VERSION) { |
7406 | struct nx_action_resubmit *nar; | |
f25d0cf3 | 7407 | |
c2d936a4 BP |
7408 | nar = put_NXAST_RESUBMIT_TABLE(out); |
7409 | nar->table = goto_table->table_id; | |
7410 | nar->in_port = htons(ofp_to_u16(OFPP_IN_PORT)); | |
7411 | } else { | |
7412 | struct ofp11_instruction_goto_table *oigt; | |
7413 | ||
7414 | oigt = instruction_put_OFPIT11_GOTO_TABLE(out); | |
7415 | oigt->table_id = goto_table->table_id; | |
7416 | memset(oigt->pad, 0, sizeof oigt->pad); | |
7417 | } | |
7418 | } | |
7419 | ||
cab50449 | 7420 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 7421 | parse_GOTO_TABLE(char *arg, const struct ofpact_parse_params *pp) |
c2d936a4 | 7422 | { |
efefbcae | 7423 | struct ofpact_goto_table *ogt = ofpact_put_GOTO_TABLE(pp->ofpacts); |
4bc938cc BP |
7424 | if (!ofputil_table_from_string(arg, pp->table_map, &ogt->table_id)) { |
7425 | return xasprintf("unknown table \"%s\"", arg); | |
c2d936a4 | 7426 | } |
4bc938cc | 7427 | return NULL; |
c2d936a4 BP |
7428 | } |
7429 | ||
7430 | static void | |
50f96b10 | 7431 | format_GOTO_TABLE(const struct ofpact_goto_table *a, |
efefbcae | 7432 | const struct ofpact_format_params *fp) |
c2d936a4 | 7433 | { |
4bc938cc BP |
7434 | ds_put_format(fp->s, "%sgoto_table:%s", colors.param, colors.end); |
7435 | ofputil_format_table(a->table_id, fp->table_map, fp->s); | |
c2d936a4 | 7436 | } |
ae6f7530 BP |
7437 | |
7438 | static enum ofperr | |
7439 | check_GOTO_TABLE(const struct ofpact_goto_table *a, | |
7440 | const struct ofpact_check_params *cp) | |
7441 | { | |
7442 | if ((cp->table_id != 255 && a->table_id <= cp->table_id) | |
7443 | || (cp->n_tables != 255 && a->table_id >= cp->n_tables)) { | |
7444 | return OFPERR_OFPBIC_BAD_TABLE_ID; | |
7445 | } | |
7446 | return 0; | |
7447 | } | |
c2d936a4 BP |
7448 | \f |
7449 | static void | |
5ad4b3f8 | 7450 | log_bad_action(const struct ofp_action_header *actions, size_t actions_len, |
c2d936a4 BP |
7451 | const struct ofp_action_header *bad_action, enum ofperr error) |
7452 | { | |
7453 | if (!VLOG_DROP_WARN(&rl)) { | |
7454 | struct ds s; | |
7455 | ||
7456 | ds_init(&s); | |
5ad4b3f8 | 7457 | ds_put_hex_dump(&s, actions, actions_len, 0, false); |
c2d936a4 BP |
7458 | VLOG_WARN("bad action at offset %#"PRIxPTR" (%s):\n%s", |
7459 | (char *)bad_action - (char *)actions, | |
7460 | ofperr_get_name(error), ds_cstr(&s)); | |
7461 | ds_destroy(&s); | |
7462 | } | |
7463 | } | |
7464 | ||
7465 | static enum ofperr | |
7466 | ofpacts_decode(const void *actions, size_t actions_len, | |
04f48a68 | 7467 | enum ofp_version ofp_version, |
5c7c16d8 YHW |
7468 | const struct vl_mff_map *vl_mff_map, |
7469 | uint64_t *ofpacts_tlv_bitmap, struct ofpbuf *ofpacts) | |
c2d936a4 | 7470 | { |
0a2869d5 | 7471 | struct ofpbuf openflow = ofpbuf_const_initializer(actions, actions_len); |
6fd6ed71 PS |
7472 | while (openflow.size) { |
7473 | const struct ofp_action_header *action = openflow.data; | |
c2d936a4 BP |
7474 | enum ofp_raw_action_type raw; |
7475 | enum ofperr error; | |
7476 | uint64_t arg; | |
7477 | ||
7478 | error = ofpact_pull_raw(&openflow, ofp_version, &raw, &arg); | |
7479 | if (!error) { | |
04f48a68 | 7480 | error = ofpact_decode(action, raw, ofp_version, arg, vl_mff_map, |
5c7c16d8 | 7481 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
7482 | } |
7483 | ||
7484 | if (error) { | |
5ad4b3f8 | 7485 | log_bad_action(actions, actions_len, action, error); |
c2d936a4 BP |
7486 | return error; |
7487 | } | |
7488 | } | |
c2d936a4 BP |
7489 | return 0; |
7490 | } | |
7491 | ||
7492 | static enum ofperr | |
7493 | ofpacts_pull_openflow_actions__(struct ofpbuf *openflow, | |
7494 | unsigned int actions_len, | |
7495 | enum ofp_version version, | |
7496 | uint32_t allowed_ovsinsts, | |
d824b5b7 | 7497 | struct ofpbuf *ofpacts, |
04f48a68 | 7498 | enum ofpact_type outer_action, |
5c7c16d8 YHW |
7499 | const struct vl_mff_map *vl_mff_map, |
7500 | uint64_t *ofpacts_tlv_bitmap) | |
c2d936a4 BP |
7501 | { |
7502 | const struct ofp_action_header *actions; | |
9abca1e5 | 7503 | size_t orig_size = ofpacts->size; |
c2d936a4 BP |
7504 | enum ofperr error; |
7505 | ||
c2d936a4 BP |
7506 | if (actions_len % OFP_ACTION_ALIGN != 0) { |
7507 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a " | |
7508 | "multiple of %d", actions_len, OFP_ACTION_ALIGN); | |
7509 | return OFPERR_OFPBRC_BAD_LEN; | |
7510 | } | |
7511 | ||
7512 | actions = ofpbuf_try_pull(openflow, actions_len); | |
7513 | if (actions == NULL) { | |
7514 | VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds " | |
7515 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 7516 | actions_len, openflow->size); |
c2d936a4 BP |
7517 | return OFPERR_OFPBRC_BAD_LEN; |
7518 | } | |
7519 | ||
5c7c16d8 YHW |
7520 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
7521 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 | 7522 | if (error) { |
9abca1e5 | 7523 | ofpacts->size = orig_size; |
c2d936a4 BP |
7524 | return error; |
7525 | } | |
7526 | ||
d824b5b7 JS |
7527 | error = ofpacts_verify(ofpacts->data, ofpacts->size, allowed_ovsinsts, |
7528 | outer_action); | |
c2d936a4 | 7529 | if (error) { |
9abca1e5 | 7530 | ofpacts->size = orig_size; |
c2d936a4 BP |
7531 | } |
7532 | return error; | |
7533 | } | |
7534 | ||
9abca1e5 BP |
7535 | /* Attempts to convert 'actions_len' bytes of OpenFlow actions from the front |
7536 | * of 'openflow' into ofpacts. On success, appends the converted actions to | |
7537 | * 'ofpacts'; on failure, 'ofpacts' is unchanged (but might be reallocated) . | |
c2d936a4 BP |
7538 | * Returns 0 if successful, otherwise an OpenFlow error. |
7539 | * | |
7540 | * Actions are processed according to their OpenFlow version which | |
7541 | * is provided in the 'version' parameter. | |
7542 | * | |
7543 | * In most places in OpenFlow, actions appear encapsulated in instructions, so | |
7544 | * you should call ofpacts_pull_openflow_instructions() instead of this | |
7545 | * function. | |
7546 | * | |
5c7c16d8 YHW |
7547 | * 'vl_mff_map' and 'ofpacts_tlv_bitmap' are optional. If 'vl_mff_map' is |
7548 | * provided, it is used to get variable length mf_fields with configured | |
7549 | * length in the actions. If an action uses a variable length mf_field, | |
7550 | * 'ofpacts_tlv_bitmap' is updated accordingly for ref counting. If | |
7551 | * 'vl_mff_map' is not provided, the default mf_fields with maximum length | |
7552 | * will be used. | |
7553 | * | |
c2d936a4 BP |
7554 | * The parsed actions are valid generically, but they may not be valid in a |
7555 | * specific context. For example, port numbers up to OFPP_MAX are valid | |
7556 | * generically, but specific datapaths may only support port numbers in a | |
7557 | * smaller range. Use ofpacts_check() to additional check whether actions are | |
7558 | * valid in a specific context. */ | |
7559 | enum ofperr | |
7560 | ofpacts_pull_openflow_actions(struct ofpbuf *openflow, | |
7561 | unsigned int actions_len, | |
7562 | enum ofp_version version, | |
04f48a68 | 7563 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7564 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
7565 | struct ofpbuf *ofpacts) |
7566 | { | |
7567 | return ofpacts_pull_openflow_actions__(openflow, actions_len, version, | |
7568 | 1u << OVSINST_OFPIT11_APPLY_ACTIONS, | |
5c7c16d8 YHW |
7569 | ofpacts, 0, vl_mff_map, |
7570 | ofpacts_tlv_bitmap); | |
c2d936a4 BP |
7571 | } |
7572 | \f | |
39d4382e | 7573 | /* OpenFlow 1.1 action sets. */ |
c2d936a4 | 7574 | |
39d4382e KS |
7575 | /* Append ofpact 'a' onto the tail of 'out' */ |
7576 | static void | |
7577 | ofpact_copy(struct ofpbuf *out, const struct ofpact *a) | |
7578 | { | |
7579 | ofpbuf_put(out, a, OFPACT_ALIGN(a->len)); | |
7580 | } | |
c2d936a4 | 7581 | |
39d4382e KS |
7582 | /* The order in which actions in an action set get executed. This is only for |
7583 | * the actions where only the last instance added is used. */ | |
7584 | #define ACTION_SET_ORDER \ | |
7585 | SLOT(OFPACT_STRIP_VLAN) \ | |
7586 | SLOT(OFPACT_POP_MPLS) \ | |
7587 | SLOT(OFPACT_DECAP) \ | |
7588 | SLOT(OFPACT_ENCAP) \ | |
7589 | SLOT(OFPACT_PUSH_MPLS) \ | |
7590 | SLOT(OFPACT_PUSH_VLAN) \ | |
7591 | SLOT(OFPACT_DEC_TTL) \ | |
7592 | SLOT(OFPACT_DEC_MPLS_TTL) \ | |
7593 | SLOT(OFPACT_DEC_NSH_TTL) | |
7594 | ||
7595 | /* Priority for "final actions" in an action set. An action set only gets | |
7596 | * executed at all if at least one of these actions is present. If more than | |
7597 | * one is present, then only the one later in this list is executed (and if | |
7598 | * more than one of a given type, the one later in the action set). */ | |
7599 | #define ACTION_SET_FINAL_PRIORITY \ | |
7600 | FINAL(OFPACT_CT) \ | |
7601 | FINAL(OFPACT_CT_CLEAR) \ | |
7602 | FINAL(OFPACT_RESUBMIT) \ | |
7603 | FINAL(OFPACT_OUTPUT) \ | |
7604 | FINAL(OFPACT_GROUP) | |
7605 | ||
7606 | enum action_set_class { | |
7607 | /* Actions that individually can usefully appear only once in an action | |
7608 | * set. If they do appear more than once, then only the last instance is | |
7609 | * honored. */ | |
7610 | #define SLOT(OFPACT) ACTION_SLOT_##OFPACT, | |
7611 | ACTION_SET_ORDER | |
7612 | #undef SLOT | |
7613 | ||
7614 | /* Final actions. */ | |
7615 | #define FINAL(OFPACT) ACTION_SLOT_##OFPACT, | |
7616 | ACTION_SET_FINAL_PRIORITY | |
7617 | #undef FINAL | |
7618 | ||
7619 | /* Actions that can appear in an action set more than once and are executed | |
7620 | * in order. */ | |
7621 | ACTION_SLOT_SET_OR_MOVE, | |
7622 | ||
7623 | /* Actions that shouldn't appear in the action set at all. */ | |
7624 | ACTION_SLOT_INVALID | |
7625 | }; | |
7626 | ||
7627 | /* Count the action set slots. */ | |
7628 | #define SLOT(OFPACT) +1 | |
7629 | enum { N_ACTION_SLOTS = ACTION_SET_ORDER }; | |
7630 | #undef SLOT | |
7631 | ||
7632 | static enum action_set_class | |
7633 | action_set_classify(const struct ofpact *a) | |
c2d936a4 BP |
7634 | { |
7635 | switch (a->type) { | |
39d4382e KS |
7636 | #define SLOT(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; |
7637 | ACTION_SET_ORDER | |
7638 | #undef SLOT | |
7639 | ||
7640 | #define FINAL(OFPACT) case OFPACT: return ACTION_SLOT_##OFPACT; | |
7641 | ACTION_SET_FINAL_PRIORITY | |
7642 | #undef FINAL | |
7643 | ||
c2d936a4 | 7644 | case OFPACT_SET_FIELD: |
1b0ee636 | 7645 | case OFPACT_REG_MOVE: |
c2d936a4 BP |
7646 | case OFPACT_SET_ETH_DST: |
7647 | case OFPACT_SET_ETH_SRC: | |
7648 | case OFPACT_SET_IP_DSCP: | |
7649 | case OFPACT_SET_IP_ECN: | |
7650 | case OFPACT_SET_IP_TTL: | |
7651 | case OFPACT_SET_IPV4_DST: | |
7652 | case OFPACT_SET_IPV4_SRC: | |
7653 | case OFPACT_SET_L4_DST_PORT: | |
7654 | case OFPACT_SET_L4_SRC_PORT: | |
7655 | case OFPACT_SET_MPLS_LABEL: | |
7656 | case OFPACT_SET_MPLS_TC: | |
7657 | case OFPACT_SET_MPLS_TTL: | |
7658 | case OFPACT_SET_QUEUE: | |
7659 | case OFPACT_SET_TUNNEL: | |
7660 | case OFPACT_SET_VLAN_PCP: | |
7661 | case OFPACT_SET_VLAN_VID: | |
39d4382e KS |
7662 | return ACTION_SLOT_SET_OR_MOVE; |
7663 | ||
c2d936a4 BP |
7664 | case OFPACT_BUNDLE: |
7665 | case OFPACT_CLEAR_ACTIONS: | |
7ae62a67 | 7666 | case OFPACT_CLONE: |
9ac0aada | 7667 | case OFPACT_NAT: |
c2d936a4 | 7668 | case OFPACT_CONTROLLER: |
c2d936a4 BP |
7669 | case OFPACT_ENQUEUE: |
7670 | case OFPACT_EXIT: | |
e672ff9b | 7671 | case OFPACT_UNROLL_XLATE: |
c2d936a4 BP |
7672 | case OFPACT_FIN_TIMEOUT: |
7673 | case OFPACT_GOTO_TABLE: | |
c2d936a4 | 7674 | case OFPACT_LEARN: |
18080541 | 7675 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7676 | case OFPACT_METER: |
7677 | case OFPACT_MULTIPATH: | |
7678 | case OFPACT_NOTE: | |
c2d936a4 | 7679 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7680 | case OFPACT_OUTPUT_TRUNC: |
c2d936a4 | 7681 | case OFPACT_POP_QUEUE: |
c2d936a4 BP |
7682 | case OFPACT_SAMPLE: |
7683 | case OFPACT_STACK_POP: | |
7684 | case OFPACT_STACK_PUSH: | |
c2d936a4 BP |
7685 | case OFPACT_WRITE_ACTIONS: |
7686 | case OFPACT_WRITE_METADATA: | |
d4abaff5 | 7687 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7688 | case OFPACT_DEBUG_SLOW: |
39d4382e KS |
7689 | return ACTION_SLOT_INVALID; |
7690 | ||
c2d936a4 BP |
7691 | default: |
7692 | OVS_NOT_REACHED(); | |
7693 | } | |
7694 | } | |
7695 | ||
7696 | /* True if an action is allowed in the action set. | |
7697 | * False otherwise. */ | |
7698 | static bool | |
7699 | ofpact_is_allowed_in_actions_set(const struct ofpact *a) | |
7700 | { | |
39d4382e | 7701 | return action_set_classify(a) != ACTION_SLOT_INVALID; |
4cceacb9 JS |
7702 | } |
7703 | ||
c2d936a4 BP |
7704 | /* Reads 'action_set', which contains ofpacts accumulated by |
7705 | * OFPACT_WRITE_ACTIONS instructions, and writes equivalent actions to be | |
7706 | * executed directly into 'action_list'. (These names correspond to the | |
7707 | * "Action Set" and "Action List" terms used in OpenFlow 1.1+.) | |
7708 | * | |
7709 | * In general this involves appending the last instance of each action that is | |
e672ff9b | 7710 | * admissible in the action set in the order described in the OpenFlow |
c2d936a4 BP |
7711 | * specification. |
7712 | * | |
7713 | * Exceptions: | |
7714 | * + output action is only appended if no group action was present in 'in'. | |
7715 | * + As a simplification all set actions are copied in the order the are | |
7716 | * provided in 'in' as many set actions applied to a field has the same | |
7717 | * affect as only applying the last action that sets a field and | |
7718 | * duplicates are removed by do_xlate_actions(). | |
7719 | * This has an unwanted side-effect of compsoting multiple | |
7720 | * LOAD_REG actions that touch different regions of the same field. */ | |
7721 | void | |
7722 | ofpacts_execute_action_set(struct ofpbuf *action_list, | |
7723 | const struct ofpbuf *action_set) | |
f25d0cf3 | 7724 | { |
39d4382e KS |
7725 | const struct ofpact *slots[N_ACTION_SLOTS] = {NULL, }; |
7726 | ||
7727 | struct ofpbuf set_or_move; | |
7728 | ofpbuf_init(&set_or_move, 0); | |
7729 | ||
7730 | const struct ofpact *final_action = NULL; | |
7731 | enum action_set_class final_class = 0; | |
7732 | ||
7733 | const struct ofpact *cursor; | |
7734 | OFPACT_FOR_EACH (cursor, action_set->data, action_set->size) { | |
7735 | int class = action_set_classify(cursor); | |
7736 | if (class < N_ACTION_SLOTS) { | |
7737 | slots[class] = cursor; | |
7738 | } else if (class < ACTION_SLOT_SET_OR_MOVE) { | |
7739 | if (class >= final_class) { | |
7740 | final_action = cursor; | |
7741 | final_class = class; | |
7742 | } | |
7743 | } else if (class == ACTION_SLOT_SET_OR_MOVE) { | |
7744 | ofpact_copy(&set_or_move, cursor); | |
7745 | } else { | |
7746 | ovs_assert(class == ACTION_SLOT_INVALID); | |
7747 | } | |
7748 | } | |
7749 | ||
7750 | if (final_action) { | |
7751 | for (int i = 0; i < N_ACTION_SLOTS; i++) { | |
7752 | if (slots[i]) { | |
7753 | ofpact_copy(action_list, slots[i]); | |
7754 | } | |
7755 | } | |
7756 | ofpbuf_put(action_list, set_or_move.data, set_or_move.size); | |
7757 | ofpact_copy(action_list, final_action); | |
f25d0cf3 | 7758 | } |
39d4382e | 7759 | ofpbuf_uninit(&set_or_move); |
f25d0cf3 BP |
7760 | } |
7761 | ||
f25d0cf3 | 7762 | |
c2d936a4 BP |
7763 | static enum ofperr |
7764 | ofpacts_decode_for_action_set(const struct ofp_action_header *in, | |
7765 | size_t n_in, enum ofp_version version, | |
04f48a68 | 7766 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 7767 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 | 7768 | struct ofpbuf *out) |
c2d967a5 | 7769 | { |
c2d936a4 BP |
7770 | enum ofperr error; |
7771 | struct ofpact *a; | |
6fd6ed71 | 7772 | size_t start = out->size; |
c2d967a5 | 7773 | |
5c7c16d8 YHW |
7774 | error = ofpacts_decode(in, n_in, version, vl_mff_map, ofpacts_tlv_bitmap, |
7775 | out); | |
c2d967a5 | 7776 | |
c2d936a4 BP |
7777 | if (error) { |
7778 | return error; | |
7779 | } | |
7780 | ||
6fd6ed71 | 7781 | OFPACT_FOR_EACH (a, ofpact_end(out->data, start), out->size - start) { |
c2d936a4 BP |
7782 | if (!ofpact_is_allowed_in_actions_set(a)) { |
7783 | VLOG_WARN_RL(&rl, "disallowed action in action set"); | |
7784 | return OFPERR_OFPBAC_BAD_TYPE; | |
c2d967a5 MM |
7785 | } |
7786 | } | |
c2d936a4 BP |
7787 | |
7788 | return 0; | |
c2d967a5 | 7789 | } |
c2d936a4 BP |
7790 | \f |
7791 | /* OpenFlow 1.1 instructions. */ | |
c2d967a5 | 7792 | |
c2d936a4 BP |
7793 | struct instruction_type_info { |
7794 | enum ovs_instruction_type type; | |
7795 | const char *name; | |
7796 | }; | |
7797 | ||
7798 | static const struct instruction_type_info inst_info[] = { | |
7799 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME}, | |
7800 | OVS_INSTRUCTIONS | |
7801 | #undef DEFINE_INST | |
7802 | }; | |
7803 | ||
7804 | const char * | |
7805 | ovs_instruction_name_from_type(enum ovs_instruction_type type) | |
f25d0cf3 | 7806 | { |
3b048d73 | 7807 | return type < ARRAY_SIZE(inst_info) ? inst_info[type].name : NULL; |
f25d0cf3 BP |
7808 | } |
7809 | ||
c2d936a4 BP |
7810 | int |
7811 | ovs_instruction_type_from_name(const char *name) | |
29089a54 | 7812 | { |
c2d936a4 BP |
7813 | const struct instruction_type_info *p; |
7814 | for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) { | |
7815 | if (!strcasecmp(name, p->name)) { | |
7816 | return p->type; | |
7817 | } | |
7818 | } | |
7819 | return -1; | |
29089a54 RL |
7820 | } |
7821 | ||
c2d936a4 BP |
7822 | enum ovs_instruction_type |
7823 | ovs_instruction_type_from_ofpact_type(enum ofpact_type type) | |
f25d0cf3 | 7824 | { |
c2d936a4 BP |
7825 | switch (type) { |
7826 | case OFPACT_METER: | |
7827 | return OVSINST_OFPIT13_METER; | |
7828 | case OFPACT_CLEAR_ACTIONS: | |
7829 | return OVSINST_OFPIT11_CLEAR_ACTIONS; | |
7830 | case OFPACT_WRITE_ACTIONS: | |
7831 | return OVSINST_OFPIT11_WRITE_ACTIONS; | |
7832 | case OFPACT_WRITE_METADATA: | |
7833 | return OVSINST_OFPIT11_WRITE_METADATA; | |
7834 | case OFPACT_GOTO_TABLE: | |
7835 | return OVSINST_OFPIT11_GOTO_TABLE; | |
7836 | case OFPACT_OUTPUT: | |
7837 | case OFPACT_GROUP: | |
7ae62a67 | 7838 | case OFPACT_CLONE: |
f25d0cf3 | 7839 | case OFPACT_CONTROLLER: |
c2d936a4 | 7840 | case OFPACT_ENQUEUE: |
f25d0cf3 | 7841 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 7842 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 | 7843 | case OFPACT_BUNDLE: |
c2d936a4 BP |
7844 | case OFPACT_SET_VLAN_VID: |
7845 | case OFPACT_SET_VLAN_PCP: | |
7846 | case OFPACT_STRIP_VLAN: | |
7847 | case OFPACT_PUSH_VLAN: | |
7848 | case OFPACT_SET_ETH_SRC: | |
7849 | case OFPACT_SET_ETH_DST: | |
7850 | case OFPACT_SET_IPV4_SRC: | |
7851 | case OFPACT_SET_IPV4_DST: | |
7852 | case OFPACT_SET_IP_DSCP: | |
7853 | case OFPACT_SET_IP_ECN: | |
7854 | case OFPACT_SET_IP_TTL: | |
7855 | case OFPACT_SET_L4_SRC_PORT: | |
7856 | case OFPACT_SET_L4_DST_PORT: | |
f25d0cf3 | 7857 | case OFPACT_REG_MOVE: |
c2d936a4 | 7858 | case OFPACT_SET_FIELD: |
bd85dac1 | 7859 | case OFPACT_STACK_PUSH: |
bd85dac1 | 7860 | case OFPACT_STACK_POP: |
f25d0cf3 | 7861 | case OFPACT_DEC_TTL: |
097d4939 | 7862 | case OFPACT_SET_MPLS_LABEL: |
097d4939 | 7863 | case OFPACT_SET_MPLS_TC: |
0f3f3c3d | 7864 | case OFPACT_SET_MPLS_TTL: |
b676167a | 7865 | case OFPACT_DEC_MPLS_TTL: |
c2d936a4 BP |
7866 | case OFPACT_PUSH_MPLS: |
7867 | case OFPACT_POP_MPLS: | |
f25d0cf3 | 7868 | case OFPACT_SET_TUNNEL: |
c2d936a4 BP |
7869 | case OFPACT_SET_QUEUE: |
7870 | case OFPACT_POP_QUEUE: | |
7871 | case OFPACT_FIN_TIMEOUT: | |
7872 | case OFPACT_RESUBMIT: | |
7873 | case OFPACT_LEARN: | |
18080541 | 7874 | case OFPACT_CONJUNCTION: |
c2d936a4 BP |
7875 | case OFPACT_MULTIPATH: |
7876 | case OFPACT_NOTE: | |
7877 | case OFPACT_EXIT: | |
e672ff9b | 7878 | case OFPACT_UNROLL_XLATE: |
c2d936a4 | 7879 | case OFPACT_SAMPLE: |
d4abaff5 | 7880 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 7881 | case OFPACT_DEBUG_SLOW: |
07659514 | 7882 | case OFPACT_CT: |
72fe7578 | 7883 | case OFPACT_CT_CLEAR: |
9ac0aada | 7884 | case OFPACT_NAT: |
f839892a JS |
7885 | case OFPACT_ENCAP: |
7886 | case OFPACT_DECAP: | |
491e05c2 | 7887 | case OFPACT_DEC_NSH_TTL: |
c2d936a4 BP |
7888 | default: |
7889 | return OVSINST_OFPIT11_APPLY_ACTIONS; | |
7890 | } | |
7891 | } | |
7892 | ||
7893 | enum ofperr | |
7894 | ovs_instruction_type_from_inst_type(enum ovs_instruction_type *instruction_type, | |
7895 | const uint16_t inst_type) | |
7896 | { | |
7897 | switch (inst_type) { | |
7898 | ||
7899 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ | |
7900 | case ENUM: \ | |
7901 | *instruction_type = OVSINST_##ENUM; \ | |
7902 | return 0; | |
7903 | OVS_INSTRUCTIONS | |
7904 | #undef DEFINE_INST | |
7905 | ||
7906 | default: | |
7907 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
7908 | } | |
7909 | } | |
7910 | ||
7911 | /* Two-way translation between OVS's internal "OVSINST_*" representation of | |
7912 | * instructions and the "OFPIT_*" representation used in OpenFlow. */ | |
7913 | struct ovsinst_map { | |
7914 | enum ovs_instruction_type ovsinst; /* Internal name for instruction. */ | |
7915 | int ofpit; /* OFPIT_* number from OpenFlow spec. */ | |
7916 | }; | |
7917 | ||
7918 | static const struct ovsinst_map * | |
7919 | get_ovsinst_map(enum ofp_version version) | |
7920 | { | |
7921 | /* OpenFlow 1.1 and 1.2 instructions. */ | |
7922 | static const struct ovsinst_map of11[] = { | |
7923 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7924 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7925 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7926 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7927 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7928 | { 0, -1 }, | |
7929 | }; | |
f25d0cf3 | 7930 | |
c2d936a4 BP |
7931 | /* OpenFlow 1.3+ instructions. */ |
7932 | static const struct ovsinst_map of13[] = { | |
7933 | { OVSINST_OFPIT11_GOTO_TABLE, 1 }, | |
7934 | { OVSINST_OFPIT11_WRITE_METADATA, 2 }, | |
7935 | { OVSINST_OFPIT11_WRITE_ACTIONS, 3 }, | |
7936 | { OVSINST_OFPIT11_APPLY_ACTIONS, 4 }, | |
7937 | { OVSINST_OFPIT11_CLEAR_ACTIONS, 5 }, | |
7938 | { OVSINST_OFPIT13_METER, 6 }, | |
7939 | { 0, -1 }, | |
7940 | }; | |
4cceacb9 | 7941 | |
c2d936a4 BP |
7942 | return version < OFP13_VERSION ? of11 : of13; |
7943 | } | |
f25d0cf3 | 7944 | |
c2d936a4 BP |
7945 | /* Converts 'ovsinst_bitmap', a bitmap whose bits correspond to OVSINST_* |
7946 | * values, into a bitmap of instructions suitable for OpenFlow 'version' | |
7947 | * (OFP11_VERSION or later), and returns the result. */ | |
7948 | ovs_be32 | |
7949 | ovsinst_bitmap_to_openflow(uint32_t ovsinst_bitmap, enum ofp_version version) | |
7950 | { | |
7951 | uint32_t ofpit_bitmap = 0; | |
7952 | const struct ovsinst_map *x; | |
f25d0cf3 | 7953 | |
c2d936a4 BP |
7954 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7955 | if (ovsinst_bitmap & (1u << x->ovsinst)) { | |
7956 | ofpit_bitmap |= 1u << x->ofpit; | |
7957 | } | |
7958 | } | |
7959 | return htonl(ofpit_bitmap); | |
7960 | } | |
f25d0cf3 | 7961 | |
c2d936a4 BP |
7962 | /* Converts 'ofpit_bitmap', a bitmap of instructions from an OpenFlow message |
7963 | * with the given 'version' (OFP11_VERSION or later) into a bitmap whose bits | |
7964 | * correspond to OVSINST_* values, and returns the result. */ | |
7965 | uint32_t | |
7966 | ovsinst_bitmap_from_openflow(ovs_be32 ofpit_bitmap, enum ofp_version version) | |
7967 | { | |
7968 | uint32_t ovsinst_bitmap = 0; | |
7969 | const struct ovsinst_map *x; | |
f25d0cf3 | 7970 | |
c2d936a4 BP |
7971 | for (x = get_ovsinst_map(version); x->ofpit >= 0; x++) { |
7972 | if (ofpit_bitmap & htonl(1u << x->ofpit)) { | |
7973 | ovsinst_bitmap |= 1u << x->ovsinst; | |
7974 | } | |
7975 | } | |
7976 | return ovsinst_bitmap; | |
7977 | } | |
f25d0cf3 | 7978 | |
c2d936a4 BP |
7979 | static inline struct ofp11_instruction * |
7980 | instruction_next(const struct ofp11_instruction *inst) | |
7981 | { | |
7982 | return ((struct ofp11_instruction *) (void *) | |
7983 | ((uint8_t *) inst + ntohs(inst->len))); | |
7984 | } | |
f25d0cf3 | 7985 | |
c2d936a4 BP |
7986 | static inline bool |
7987 | instruction_is_valid(const struct ofp11_instruction *inst, | |
7988 | size_t n_instructions) | |
7989 | { | |
7990 | uint16_t len = ntohs(inst->len); | |
7991 | return (!(len % OFP11_INSTRUCTION_ALIGN) | |
7992 | && len >= sizeof *inst | |
7993 | && len / sizeof *inst <= n_instructions); | |
7994 | } | |
f25d0cf3 | 7995 | |
c2d936a4 BP |
7996 | /* This macro is careful to check for instructions with bad lengths. */ |
7997 | #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \ | |
7998 | for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \ | |
7999 | (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \ | |
8000 | ((LEFT) -= (ntohs((ITER)->len) \ | |
8001 | / sizeof(struct ofp11_instruction)), \ | |
8002 | (ITER) = instruction_next(ITER))) | |
f25d0cf3 | 8003 | |
c2d936a4 BP |
8004 | static enum ofperr |
8005 | decode_openflow11_instruction(const struct ofp11_instruction *inst, | |
8006 | enum ovs_instruction_type *type) | |
8007 | { | |
8008 | uint16_t len = ntohs(inst->len); | |
b02475c5 | 8009 | |
c2d936a4 BP |
8010 | switch (inst->type) { |
8011 | case CONSTANT_HTONS(OFPIT11_EXPERIMENTER): | |
8012 | return OFPERR_OFPBIC_BAD_EXPERIMENTER; | |
b02475c5 | 8013 | |
c2d936a4 BP |
8014 | #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \ |
8015 | case CONSTANT_HTONS(ENUM): \ | |
8016 | if (EXTENSIBLE \ | |
8017 | ? len >= sizeof(struct STRUCT) \ | |
8018 | : len == sizeof(struct STRUCT)) { \ | |
8019 | *type = OVSINST_##ENUM; \ | |
8020 | return 0; \ | |
8021 | } else { \ | |
8022 | return OFPERR_OFPBIC_BAD_LEN; \ | |
8023 | } | |
8024 | OVS_INSTRUCTIONS | |
8025 | #undef DEFINE_INST | |
29089a54 | 8026 | |
c2d936a4 BP |
8027 | default: |
8028 | return OFPERR_OFPBIC_UNKNOWN_INST; | |
f25d0cf3 BP |
8029 | } |
8030 | } | |
f25d0cf3 | 8031 | |
c2d936a4 BP |
8032 | static enum ofperr |
8033 | decode_openflow11_instructions(const struct ofp11_instruction insts[], | |
8034 | size_t n_insts, | |
8035 | const struct ofp11_instruction *out[]) | |
f25d0cf3 | 8036 | { |
c2d936a4 BP |
8037 | const struct ofp11_instruction *inst; |
8038 | size_t left; | |
f25d0cf3 | 8039 | |
c2d936a4 BP |
8040 | memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out); |
8041 | INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) { | |
8042 | enum ovs_instruction_type type; | |
8043 | enum ofperr error; | |
f25d0cf3 | 8044 | |
c2d936a4 BP |
8045 | error = decode_openflow11_instruction(inst, &type); |
8046 | if (error) { | |
8047 | return error; | |
8048 | } | |
f25d0cf3 | 8049 | |
c2d936a4 BP |
8050 | if (out[type]) { |
8051 | return OFPERR_OFPBIC_DUP_INST; | |
8052 | } | |
8053 | out[type] = inst; | |
8054 | } | |
8055 | ||
8056 | if (left) { | |
8057 | VLOG_WARN_RL(&rl, "bad instruction format at offset %"PRIuSIZE, | |
8058 | (n_insts - left) * sizeof *inst); | |
8059 | return OFPERR_OFPBIC_BAD_LEN; | |
8060 | } | |
8061 | return 0; | |
f25d0cf3 BP |
8062 | } |
8063 | ||
8064 | static void | |
c2d936a4 BP |
8065 | get_actions_from_instruction(const struct ofp11_instruction *inst, |
8066 | const struct ofp_action_header **actions, | |
8067 | size_t *actions_len) | |
f25d0cf3 | 8068 | { |
c2d936a4 BP |
8069 | *actions = ALIGNED_CAST(const struct ofp_action_header *, inst + 1); |
8070 | *actions_len = ntohs(inst->len) - sizeof *inst; | |
8071 | } | |
f25d0cf3 | 8072 | |
c2d936a4 BP |
8073 | enum ofperr |
8074 | ofpacts_pull_openflow_instructions(struct ofpbuf *openflow, | |
8075 | unsigned int instructions_len, | |
8076 | enum ofp_version version, | |
04f48a68 | 8077 | const struct vl_mff_map *vl_mff_map, |
5c7c16d8 | 8078 | uint64_t *ofpacts_tlv_bitmap, |
c2d936a4 BP |
8079 | struct ofpbuf *ofpacts) |
8080 | { | |
8081 | const struct ofp11_instruction *instructions; | |
8082 | const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS]; | |
8083 | enum ofperr error; | |
f25d0cf3 | 8084 | |
9abca1e5 | 8085 | ofpbuf_clear(ofpacts); |
c2d936a4 BP |
8086 | if (version == OFP10_VERSION) { |
8087 | return ofpacts_pull_openflow_actions__(openflow, instructions_len, | |
8088 | version, | |
8089 | (1u << N_OVS_INSTRUCTIONS) - 1, | |
5c7c16d8 YHW |
8090 | ofpacts, 0, vl_mff_map, |
8091 | ofpacts_tlv_bitmap); | |
c2d936a4 | 8092 | } |
f25d0cf3 | 8093 | |
c2d936a4 BP |
8094 | if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) { |
8095 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a " | |
8096 | "multiple of %d", | |
8097 | instructions_len, OFP11_INSTRUCTION_ALIGN); | |
8098 | error = OFPERR_OFPBIC_BAD_LEN; | |
8099 | goto exit; | |
8100 | } | |
f25d0cf3 | 8101 | |
c2d936a4 BP |
8102 | instructions = ofpbuf_try_pull(openflow, instructions_len); |
8103 | if (instructions == NULL) { | |
8104 | VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds " | |
8105 | "remaining message length (%"PRIu32")", | |
6fd6ed71 | 8106 | instructions_len, openflow->size); |
c2d936a4 BP |
8107 | error = OFPERR_OFPBIC_BAD_LEN; |
8108 | goto exit; | |
8109 | } | |
f25d0cf3 | 8110 | |
c2d936a4 BP |
8111 | error = decode_openflow11_instructions( |
8112 | instructions, instructions_len / OFP11_INSTRUCTION_ALIGN, | |
8113 | insts); | |
8114 | if (error) { | |
8115 | goto exit; | |
8116 | } | |
f25d0cf3 | 8117 | |
c2d936a4 BP |
8118 | if (insts[OVSINST_OFPIT13_METER]) { |
8119 | const struct ofp13_instruction_meter *oim; | |
8120 | struct ofpact_meter *om; | |
f25d0cf3 | 8121 | |
c2d936a4 BP |
8122 | oim = ALIGNED_CAST(const struct ofp13_instruction_meter *, |
8123 | insts[OVSINST_OFPIT13_METER]); | |
f25d0cf3 | 8124 | |
c2d936a4 BP |
8125 | om = ofpact_put_METER(ofpacts); |
8126 | om->meter_id = ntohl(oim->meter_id); | |
076caa2f | 8127 | om->provider_meter_id = UINT32_MAX; /* No provider meter ID. */ |
c2d936a4 BP |
8128 | } |
8129 | if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) { | |
8130 | const struct ofp_action_header *actions; | |
8131 | size_t actions_len; | |
f25d0cf3 | 8132 | |
c2d936a4 BP |
8133 | get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS], |
8134 | &actions, &actions_len); | |
04f48a68 | 8135 | error = ofpacts_decode(actions, actions_len, version, vl_mff_map, |
5c7c16d8 | 8136 | ofpacts_tlv_bitmap, ofpacts); |
c2d936a4 BP |
8137 | if (error) { |
8138 | goto exit; | |
8139 | } | |
8140 | } | |
8141 | if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) { | |
8142 | instruction_get_OFPIT11_CLEAR_ACTIONS( | |
8143 | insts[OVSINST_OFPIT11_CLEAR_ACTIONS]); | |
8144 | ofpact_put_CLEAR_ACTIONS(ofpacts); | |
8145 | } | |
8146 | if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) { | |
8147 | struct ofpact_nest *on; | |
8148 | const struct ofp_action_header *actions; | |
8149 | size_t actions_len; | |
2bd318de | 8150 | size_t start = ofpacts->size; |
255a54ea BP |
8151 | ofpact_put(ofpacts, OFPACT_WRITE_ACTIONS, |
8152 | offsetof(struct ofpact_nest, actions)); | |
c2d936a4 BP |
8153 | get_actions_from_instruction(insts[OVSINST_OFPIT11_WRITE_ACTIONS], |
8154 | &actions, &actions_len); | |
8155 | error = ofpacts_decode_for_action_set(actions, actions_len, | |
5c7c16d8 YHW |
8156 | version, vl_mff_map, |
8157 | ofpacts_tlv_bitmap, ofpacts); | |
c2d936a4 BP |
8158 | if (error) { |
8159 | goto exit; | |
8160 | } | |
8161 | on = ofpbuf_at_assert(ofpacts, start, sizeof *on); | |
6fd6ed71 | 8162 | on->ofpact.len = ofpacts->size - start; |
c2d936a4 BP |
8163 | } |
8164 | if (insts[OVSINST_OFPIT11_WRITE_METADATA]) { | |
8165 | const struct ofp11_instruction_write_metadata *oiwm; | |
8166 | struct ofpact_metadata *om; | |
ca287d20 | 8167 | |
c2d936a4 BP |
8168 | oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *, |
8169 | insts[OVSINST_OFPIT11_WRITE_METADATA]); | |
8dd54666 | 8170 | |
c2d936a4 BP |
8171 | om = ofpact_put_WRITE_METADATA(ofpacts); |
8172 | om->metadata = oiwm->metadata; | |
8173 | om->mask = oiwm->metadata_mask; | |
8174 | } | |
8175 | if (insts[OVSINST_OFPIT11_GOTO_TABLE]) { | |
8176 | const struct ofp11_instruction_goto_table *oigt; | |
8177 | struct ofpact_goto_table *ogt; | |
7395c052 | 8178 | |
c2d936a4 BP |
8179 | oigt = instruction_get_OFPIT11_GOTO_TABLE( |
8180 | insts[OVSINST_OFPIT11_GOTO_TABLE]); | |
8181 | ogt = ofpact_put_GOTO_TABLE(ofpacts); | |
8182 | ogt->table_id = oigt->table_id; | |
8183 | } | |
e3f8f887 | 8184 | |
6fd6ed71 | 8185 | error = ofpacts_verify(ofpacts->data, ofpacts->size, |
d824b5b7 | 8186 | (1u << N_OVS_INSTRUCTIONS) - 1, 0); |
c2d936a4 BP |
8187 | exit: |
8188 | if (error) { | |
8189 | ofpbuf_clear(ofpacts); | |
f25d0cf3 | 8190 | } |
c2d936a4 | 8191 | return error; |
f25d0cf3 | 8192 | } |
d01c980f | 8193 | |
c2d936a4 BP |
8194 | /* Update the length of the instruction that begins at offset 'ofs' within |
8195 | * 'openflow' and contains nested actions that extend to the end of 'openflow'. | |
8196 | * If the instruction contains no nested actions, deletes it entirely. */ | |
d01c980f | 8197 | static void |
c2d936a4 | 8198 | ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs) |
d01c980f | 8199 | { |
c2d936a4 | 8200 | struct ofp11_instruction_actions *oia; |
d01c980f | 8201 | |
c2d936a4 | 8202 | oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia); |
6fd6ed71 PS |
8203 | if (openflow->size > ofs + sizeof *oia) { |
8204 | oia->len = htons(openflow->size - ofs); | |
c2d936a4 | 8205 | } else { |
6fd6ed71 | 8206 | openflow->size = ofs; |
c2d936a4 | 8207 | } |
d01c980f | 8208 | } |
c2d936a4 BP |
8209 | \f |
8210 | /* Checks that 'port' is a valid output port for OFPACT_OUTPUT, given that the | |
8211 | * switch will never have more than 'max_ports' ports. Returns 0 if 'port' is | |
8212 | * valid, otherwise an OpenFlow error code. */ | |
8213 | enum ofperr | |
8214 | ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports) | |
99086062 | 8215 | { |
c2d936a4 BP |
8216 | switch (port) { |
8217 | case OFPP_IN_PORT: | |
8218 | case OFPP_TABLE: | |
8219 | case OFPP_NORMAL: | |
8220 | case OFPP_FLOOD: | |
8221 | case OFPP_ALL: | |
8222 | case OFPP_CONTROLLER: | |
c2d936a4 BP |
8223 | case OFPP_LOCAL: |
8224 | return 0; | |
8225 | ||
13d2c689 BP |
8226 | case OFPP_NONE: |
8227 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
8228 | ||
c2d936a4 BP |
8229 | default: |
8230 | if (ofp_to_u16(port) < ofp_to_u16(max_ports)) { | |
8231 | return 0; | |
8232 | } | |
8233 | return OFPERR_OFPBAC_BAD_OUT_PORT; | |
99086062 BP |
8234 | } |
8235 | } | |
8236 | ||
c2d936a4 BP |
8237 | /* Removes the protocols that require consistency between match and actions |
8238 | * (that's everything but OpenFlow 1.0) from '*usable_protocols'. | |
8239 | * | |
8240 | * (An example of an inconsistency between match and actions is a flow that | |
8241 | * does not match on an MPLS Ethertype but has an action that pops an MPLS | |
8242 | * label.) */ | |
d01c980f | 8243 | static void |
c2d936a4 BP |
8244 | inconsistent_match(enum ofputil_protocol *usable_protocols) |
8245 | { | |
8246 | *usable_protocols &= OFPUTIL_P_OF10_ANY; | |
8247 | } | |
8248 | ||
f839892a JS |
8249 | /* May modify flow->packet_type, flow->dl_type, flow->nw_proto and |
8250 | * flow->vlan_tci, caller must restore them. | |
c2d936a4 BP |
8251 | * |
8252 | * Modifies some actions, filling in fields that could not be properly set | |
8253 | * without context. */ | |
8254 | static enum ofperr | |
ae6f7530 | 8255 | ofpact_check__(struct ofpact *a, struct ofpact_check_params *cp) |
d01c980f BP |
8256 | { |
8257 | switch (a->type) { | |
ae6f7530 BP |
8258 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
8259 | case OFPACT_##ENUM: \ | |
8260 | return check_##ENUM(ofpact_get_##ENUM(a), cp); | |
8261 | OFPACTS | |
8262 | #undef OFPACT | |
c2d936a4 BP |
8263 | default: |
8264 | OVS_NOT_REACHED(); | |
8265 | } | |
8266 | } | |
1e7db674 | 8267 | |
c2d936a4 BP |
8268 | /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are |
8269 | * appropriate for a packet with the prerequisites satisfied by 'flow' in a | |
8270 | * switch with no more than 'max_ports' ports. | |
8271 | * | |
8272 | * If 'ofpacts' and 'flow' are inconsistent with one another, un-sets in | |
8273 | * '*usable_protocols' the protocols that forbid the inconsistency. (An | |
8274 | * example of an inconsistency between match and actions is a flow that does | |
8275 | * not match on an MPLS Ethertype but has an action that pops an MPLS label.) | |
8276 | * | |
67210a55 | 8277 | * May annotate ofpacts with information gathered from the 'match'. |
c2d936a4 | 8278 | * |
67210a55 JR |
8279 | * May temporarily modify 'match', but restores the changes before |
8280 | * returning. */ | |
c2d936a4 BP |
8281 | enum ofperr |
8282 | ofpacts_check(struct ofpact ofpacts[], size_t ofpacts_len, | |
ae6f7530 | 8283 | struct ofpact_check_params *cp) |
c2d936a4 | 8284 | { |
ae6f7530 BP |
8285 | /* Save fields that might temporarily be modified. */ |
8286 | struct flow *flow = &cp->match->flow; | |
8287 | ovs_be32 packet_type = flow->packet_type; | |
8288 | ovs_be16 dl_type = flow->dl_type; | |
8289 | uint8_t nw_proto = flow->nw_proto; | |
f0fb825a | 8290 | union flow_vlan_hdr vlans[FLOW_MAX_VLAN_HEADERS]; |
ae6f7530 | 8291 | memcpy(vlans, flow->vlans, sizeof vlans); |
f0fb825a | 8292 | |
ae6f7530 BP |
8293 | /* Check all the actions. */ |
8294 | cp->usable_protocols = OFPUTIL_P_ANY; | |
8295 | enum ofperr error = 0; | |
8296 | struct ofpact *a; | |
c2d936a4 | 8297 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
ae6f7530 | 8298 | error = ofpact_check__(a, cp); |
c2d936a4 | 8299 | if (error) { |
1e7db674 | 8300 | break; |
c2d936a4 BP |
8301 | } |
8302 | } | |
ae6f7530 | 8303 | |
c2d936a4 | 8304 | /* Restore fields that may have been modified. */ |
ae6f7530 BP |
8305 | flow->packet_type = packet_type; |
8306 | flow->dl_type = dl_type; | |
8307 | memcpy(flow->vlans, vlans, sizeof vlans); | |
8308 | flow->nw_proto = nw_proto; | |
8309 | ||
c2d936a4 BP |
8310 | return error; |
8311 | } | |
1e7db674 | 8312 | |
c2d936a4 BP |
8313 | /* Like ofpacts_check(), but reports inconsistencies as |
8314 | * OFPERR_OFPBAC_MATCH_INCONSISTENT rather than clearing bits. */ | |
8315 | enum ofperr | |
8316 | ofpacts_check_consistency(struct ofpact ofpacts[], size_t ofpacts_len, | |
ae6f7530 BP |
8317 | enum ofputil_protocol needed_protocols, |
8318 | struct ofpact_check_params *cp) | |
c2d936a4 | 8319 | { |
ae6f7530 BP |
8320 | enum ofperr error = ofpacts_check(ofpacts, ofpacts_len, cp); |
8321 | if (!error && needed_protocols & ~cp->usable_protocols) { | |
8322 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; | |
8323 | } | |
8324 | return error; | |
c2d936a4 | 8325 | } |
097d4939 | 8326 | |
28f5311f JS |
8327 | /* Returns the destination field that 'ofpact' would write to, or NULL |
8328 | * if the action would not write to an mf_field. */ | |
8329 | const struct mf_field * | |
8330 | ofpact_get_mf_dst(const struct ofpact *ofpact) | |
8e53fe8c | 8331 | { |
28f5311f JS |
8332 | if (ofpact->type == OFPACT_SET_FIELD) { |
8333 | const struct ofpact_set_field *orl; | |
8e53fe8c | 8334 | |
28f5311f | 8335 | orl = CONTAINER_OF(ofpact, struct ofpact_set_field, ofpact); |
8e53fe8c | 8336 | return orl->field; |
28f5311f JS |
8337 | } else if (ofpact->type == OFPACT_REG_MOVE) { |
8338 | const struct ofpact_reg_move *orm; | |
8e53fe8c | 8339 | |
28f5311f | 8340 | orm = CONTAINER_OF(ofpact, struct ofpact_reg_move, ofpact); |
8e53fe8c JS |
8341 | return orm->dst.field; |
8342 | } | |
8343 | ||
8344 | return NULL; | |
8345 | } | |
8346 | ||
8347 | static enum ofperr | |
8348 | unsupported_nesting(enum ofpact_type action, enum ofpact_type outer_action) | |
8349 | { | |
8350 | VLOG_WARN("%s action doesn't support nested action %s", | |
8351 | ofpact_name(outer_action), ofpact_name(action)); | |
8352 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8353 | } | |
8354 | ||
8355 | static bool | |
8356 | field_requires_ct(enum mf_field_id field) | |
8357 | { | |
9daf2348 | 8358 | return field == MFF_CT_MARK || field == MFF_CT_LABEL; |
8e53fe8c JS |
8359 | } |
8360 | ||
8361 | /* Apply nesting constraints for actions */ | |
d824b5b7 JS |
8362 | static enum ofperr |
8363 | ofpacts_verify_nested(const struct ofpact *a, enum ofpact_type outer_action) | |
8364 | { | |
28f5311f | 8365 | const struct mf_field *field = ofpact_get_mf_dst(a); |
8e53fe8c JS |
8366 | |
8367 | if (field && field_requires_ct(field->id) && outer_action != OFPACT_CT) { | |
8368 | VLOG_WARN("cannot set CT fields outside of ct action"); | |
8369 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8370 | } | |
9ac0aada JR |
8371 | if (a->type == OFPACT_NAT) { |
8372 | if (outer_action != OFPACT_CT) { | |
8373 | VLOG_WARN("Cannot have NAT action outside of \"ct\" action"); | |
8374 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; | |
8375 | } | |
8376 | return 0; | |
8377 | } | |
8e53fe8c JS |
8378 | |
8379 | if (outer_action) { | |
8380 | ovs_assert(outer_action == OFPACT_WRITE_ACTIONS | |
8381 | || outer_action == OFPACT_CT); | |
8382 | ||
8383 | if (outer_action == OFPACT_CT) { | |
8384 | if (!field) { | |
8385 | return unsupported_nesting(a->type, outer_action); | |
8386 | } else if (!field_requires_ct(field->id)) { | |
8387 | VLOG_WARN("%s action doesn't support nested modification " | |
8388 | "of %s", ofpact_name(outer_action), field->name); | |
8389 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
8390 | } | |
8391 | } | |
d824b5b7 JS |
8392 | } |
8393 | ||
8394 | return 0; | |
8395 | } | |
8396 | ||
18080541 BP |
8397 | /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are in the |
8398 | * appropriate order as defined by the OpenFlow spec and as required by Open | |
8399 | * vSwitch. | |
8400 | * | |
8401 | * 'allowed_ovsinsts' is a bitmap of OVSINST_* values, in which 1-bits indicate | |
d824b5b7 JS |
8402 | * instructions that are allowed within 'ofpacts[]'. |
8403 | * | |
8404 | * If 'outer_action' is not zero, it specifies that the actions are nested | |
8405 | * within another action of type 'outer_action'. */ | |
c2d936a4 BP |
8406 | static enum ofperr |
8407 | ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len, | |
d824b5b7 | 8408 | uint32_t allowed_ovsinsts, enum ofpact_type outer_action) |
c2d936a4 BP |
8409 | { |
8410 | const struct ofpact *a; | |
8411 | enum ovs_instruction_type inst; | |
097d4939 | 8412 | |
c2d936a4 BP |
8413 | inst = OVSINST_OFPIT13_METER; |
8414 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8415 | enum ovs_instruction_type next; | |
8e53fe8c | 8416 | enum ofperr error; |
1e7db674 | 8417 | |
18080541 BP |
8418 | if (a->type == OFPACT_CONJUNCTION) { |
8419 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
f08e39dd BP |
8420 | if (a->type != OFPACT_CONJUNCTION && a->type != OFPACT_NOTE) { |
8421 | VLOG_WARN("\"conjunction\" actions may be used along with " | |
8422 | "\"note\" but not any other kind of action " | |
8423 | "(such as the \"%s\" action used here)", | |
96775a1c | 8424 | ofpact_name(a->type)); |
18080541 BP |
8425 | return OFPERR_NXBAC_BAD_CONJUNCTION; |
8426 | } | |
8427 | } | |
8428 | return 0; | |
8429 | } | |
8430 | ||
8e53fe8c JS |
8431 | error = ofpacts_verify_nested(a, outer_action); |
8432 | if (error) { | |
8433 | return error; | |
d824b5b7 JS |
8434 | } |
8435 | ||
c2d936a4 BP |
8436 | next = ovs_instruction_type_from_ofpact_type(a->type); |
8437 | if (a > ofpacts | |
8438 | && (inst == OVSINST_OFPIT11_APPLY_ACTIONS | |
8439 | ? next < inst | |
8440 | : next <= inst)) { | |
8441 | const char *name = ovs_instruction_name_from_type(inst); | |
8442 | const char *next_name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8443 | |
c2d936a4 BP |
8444 | if (next == inst) { |
8445 | VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow " | |
8446 | "1.1+ compatibility", name); | |
8447 | } else { | |
8448 | VLOG_WARN("invalid instruction ordering: %s must appear " | |
8449 | "before %s, for OpenFlow 1.1+ compatibility", | |
8450 | next_name, name); | |
8451 | } | |
8452 | return OFPERR_OFPBAC_UNSUPPORTED_ORDER; | |
8453 | } | |
8454 | if (!((1u << next) & allowed_ovsinsts)) { | |
8455 | const char *name = ovs_instruction_name_from_type(next); | |
1e7db674 | 8456 | |
c2d936a4 BP |
8457 | VLOG_WARN("%s instruction not allowed here", name); |
8458 | return OFPERR_OFPBIC_UNSUP_INST; | |
1e7db674 | 8459 | } |
c2d936a4 BP |
8460 | |
8461 | inst = next; | |
8462 | } | |
8463 | ||
8464 | return 0; | |
8465 | } | |
8466 | \f | |
8467 | /* Converting ofpacts to OpenFlow. */ | |
8468 | ||
8469 | static void | |
8470 | encode_ofpact(const struct ofpact *a, enum ofp_version ofp_version, | |
8471 | struct ofpbuf *out) | |
8472 | { | |
8473 | switch (a->type) { | |
8474 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8475 | case OFPACT_##ENUM: \ | |
355ead69 GS |
8476 | encode_##ENUM(ofpact_get_##ENUM(a), ofp_version, out); \ |
8477 | return; | |
c2d936a4 BP |
8478 | OFPACTS |
8479 | #undef OFPACT | |
8480 | default: | |
8481 | OVS_NOT_REACHED(); | |
1e7db674 | 8482 | } |
e3f8f887 JR |
8483 | } |
8484 | ||
8485 | /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow | |
8486 | * actions in 'openflow', appending the actions to any existing data in | |
d01c980f | 8487 | * 'openflow'. */ |
a07c15bc | 8488 | size_t |
e3f8f887 JR |
8489 | ofpacts_put_openflow_actions(const struct ofpact ofpacts[], size_t ofpacts_len, |
8490 | struct ofpbuf *openflow, | |
8491 | enum ofp_version ofp_version) | |
d01c980f BP |
8492 | { |
8493 | const struct ofpact *a; | |
6fd6ed71 | 8494 | size_t start_size = openflow->size; |
d01c980f BP |
8495 | |
8496 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
c2d936a4 | 8497 | encode_ofpact(a, ofp_version, openflow); |
d01c980f | 8498 | } |
6fd6ed71 | 8499 | return openflow->size - start_size; |
d01c980f BP |
8500 | } |
8501 | ||
c2d936a4 BP |
8502 | static enum ovs_instruction_type |
8503 | ofpact_is_apply_actions(const struct ofpact *a) | |
d01c980f | 8504 | { |
c2d936a4 BP |
8505 | return (ovs_instruction_type_from_ofpact_type(a->type) |
8506 | == OVSINST_OFPIT11_APPLY_ACTIONS); | |
d01c980f | 8507 | } |
8dd54666 IY |
8508 | |
8509 | void | |
e3f8f887 JR |
8510 | ofpacts_put_openflow_instructions(const struct ofpact ofpacts[], |
8511 | size_t ofpacts_len, | |
8512 | struct ofpbuf *openflow, | |
8513 | enum ofp_version ofp_version) | |
8dd54666 | 8514 | { |
c2d936a4 | 8515 | const struct ofpact *end = ofpact_end(ofpacts, ofpacts_len); |
8dd54666 IY |
8516 | const struct ofpact *a; |
8517 | ||
8f2cded4 BP |
8518 | if (ofp_version == OFP10_VERSION) { |
8519 | ofpacts_put_openflow_actions(ofpacts, ofpacts_len, openflow, | |
8520 | ofp_version); | |
8521 | return; | |
8522 | } | |
e3f8f887 | 8523 | |
c2d936a4 BP |
8524 | a = ofpacts; |
8525 | while (a < end) { | |
8526 | if (ofpact_is_apply_actions(a)) { | |
6fd6ed71 | 8527 | size_t ofs = openflow->size; |
8dd54666 IY |
8528 | |
8529 | instruction_put_OFPIT11_APPLY_ACTIONS(openflow); | |
c2d936a4 BP |
8530 | do { |
8531 | encode_ofpact(a, ofp_version, openflow); | |
8532 | a = ofpact_next(a); | |
8533 | } while (a < end && ofpact_is_apply_actions(a)); | |
7fdb60a7 | 8534 | ofpacts_update_instruction_actions(openflow, ofs); |
c2d936a4 BP |
8535 | } else { |
8536 | encode_ofpact(a, ofp_version, openflow); | |
8537 | a = ofpact_next(a); | |
8dd54666 IY |
8538 | } |
8539 | } | |
8540 | } | |
d01c980f | 8541 | \f |
08d1e234 BP |
8542 | /* Sets of supported actions. */ |
8543 | ||
8544 | /* Two-way translation between OVS's internal "OFPACT_*" representation of | |
8545 | * actions and the "OFPAT_*" representation used in some OpenFlow version. | |
8546 | * (OFPAT_* numbering varies from one OpenFlow version to another, so a given | |
8547 | * instance is specific to one OpenFlow version.) */ | |
8548 | struct ofpact_map { | |
8549 | enum ofpact_type ofpact; /* Internal name for action type. */ | |
8550 | int ofpat; /* OFPAT_* number from OpenFlow spec. */ | |
8551 | }; | |
8552 | ||
8553 | static const struct ofpact_map * | |
8554 | get_ofpact_map(enum ofp_version version) | |
8555 | { | |
8556 | /* OpenFlow 1.0 actions. */ | |
8557 | static const struct ofpact_map of10[] = { | |
8558 | { OFPACT_OUTPUT, 0 }, | |
8559 | { OFPACT_SET_VLAN_VID, 1 }, | |
8560 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8561 | { OFPACT_STRIP_VLAN, 3 }, | |
8562 | { OFPACT_SET_ETH_SRC, 4 }, | |
8563 | { OFPACT_SET_ETH_DST, 5 }, | |
8564 | { OFPACT_SET_IPV4_SRC, 6 }, | |
8565 | { OFPACT_SET_IPV4_DST, 7 }, | |
8566 | { OFPACT_SET_IP_DSCP, 8 }, | |
8567 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8568 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8569 | { OFPACT_ENQUEUE, 11 }, | |
8570 | { 0, -1 }, | |
8571 | }; | |
8572 | ||
8573 | /* OpenFlow 1.1 actions. */ | |
8574 | static const struct ofpact_map of11[] = { | |
8575 | { OFPACT_OUTPUT, 0 }, | |
8576 | { OFPACT_SET_VLAN_VID, 1 }, | |
8577 | { OFPACT_SET_VLAN_PCP, 2 }, | |
8578 | { OFPACT_SET_ETH_SRC, 3 }, | |
8579 | { OFPACT_SET_ETH_DST, 4 }, | |
8580 | { OFPACT_SET_IPV4_SRC, 5 }, | |
8581 | { OFPACT_SET_IPV4_DST, 6 }, | |
8582 | { OFPACT_SET_IP_DSCP, 7 }, | |
8583 | { OFPACT_SET_IP_ECN, 8 }, | |
8584 | { OFPACT_SET_L4_SRC_PORT, 9 }, | |
8585 | { OFPACT_SET_L4_DST_PORT, 10 }, | |
8586 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8587 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8588 | { OFPACT_SET_MPLS_LABEL, 13 }, | |
8589 | { OFPACT_SET_MPLS_TC, 14 }, | |
8590 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8591 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8592 | { OFPACT_PUSH_VLAN, 17 }, | |
8593 | { OFPACT_STRIP_VLAN, 18 }, | |
8594 | { OFPACT_PUSH_MPLS, 19 }, | |
8595 | { OFPACT_POP_MPLS, 20 }, | |
8596 | { OFPACT_SET_QUEUE, 21 }, | |
8597 | { OFPACT_GROUP, 22 }, | |
8598 | { OFPACT_SET_IP_TTL, 23 }, | |
8599 | { OFPACT_DEC_TTL, 24 }, | |
8600 | { 0, -1 }, | |
8601 | }; | |
8602 | ||
8603 | /* OpenFlow 1.2, 1.3, and 1.4 actions. */ | |
8604 | static const struct ofpact_map of12[] = { | |
8605 | { OFPACT_OUTPUT, 0 }, | |
8606 | /* OFPAT_COPY_TTL_OUT (11) not supported. */ | |
8607 | /* OFPAT_COPY_TTL_IN (12) not supported. */ | |
8608 | { OFPACT_SET_MPLS_TTL, 15 }, | |
8609 | { OFPACT_DEC_MPLS_TTL, 16 }, | |
8610 | { OFPACT_PUSH_VLAN, 17 }, | |
8611 | { OFPACT_STRIP_VLAN, 18 }, | |
8612 | { OFPACT_PUSH_MPLS, 19 }, | |
8613 | { OFPACT_POP_MPLS, 20 }, | |
8614 | { OFPACT_SET_QUEUE, 21 }, | |
8615 | { OFPACT_GROUP, 22 }, | |
8616 | { OFPACT_SET_IP_TTL, 23 }, | |
8617 | { OFPACT_DEC_TTL, 24 }, | |
8618 | { OFPACT_SET_FIELD, 25 }, | |
8619 | /* OF1.3+ OFPAT_PUSH_PBB (26) not supported. */ | |
8620 | /* OF1.3+ OFPAT_POP_PBB (27) not supported. */ | |
8621 | { 0, -1 }, | |
8622 | }; | |
8623 | ||
8624 | switch (version) { | |
8625 | case OFP10_VERSION: | |
8626 | return of10; | |
8627 | ||
8628 | case OFP11_VERSION: | |
8629 | return of11; | |
8630 | ||
8631 | case OFP12_VERSION: | |
8632 | case OFP13_VERSION: | |
8633 | case OFP14_VERSION: | |
8634 | case OFP15_VERSION: | |
b79d45a1 | 8635 | case OFP16_VERSION: |
08d1e234 BP |
8636 | default: |
8637 | return of12; | |
8638 | } | |
8639 | } | |
8640 | ||
8641 | /* Converts 'ofpacts_bitmap', a bitmap whose bits correspond to OFPACT_* | |
8642 | * values, into a bitmap of actions suitable for OpenFlow 'version', and | |
8643 | * returns the result. */ | |
8644 | ovs_be32 | |
8645 | ofpact_bitmap_to_openflow(uint64_t ofpacts_bitmap, enum ofp_version version) | |
8646 | { | |
8647 | uint32_t openflow_bitmap = 0; | |
8648 | const struct ofpact_map *x; | |
8649 | ||
8650 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8651 | if (ofpacts_bitmap & (UINT64_C(1) << x->ofpact)) { | |
8652 | openflow_bitmap |= 1u << x->ofpat; | |
8653 | } | |
8654 | } | |
8655 | return htonl(openflow_bitmap); | |
8656 | } | |
8657 | ||
8658 | /* Converts 'ofpat_bitmap', a bitmap of actions from an OpenFlow message with | |
8659 | * the given 'version' into a bitmap whose bits correspond to OFPACT_* values, | |
8660 | * and returns the result. */ | |
8661 | uint64_t | |
8662 | ofpact_bitmap_from_openflow(ovs_be32 ofpat_bitmap, enum ofp_version version) | |
8663 | { | |
8664 | uint64_t ofpact_bitmap = 0; | |
8665 | const struct ofpact_map *x; | |
8666 | ||
8667 | for (x = get_ofpact_map(version); x->ofpat >= 0; x++) { | |
8668 | if (ofpat_bitmap & htonl(1u << x->ofpat)) { | |
8669 | ofpact_bitmap |= UINT64_C(1) << x->ofpact; | |
8670 | } | |
8671 | } | |
8672 | return ofpact_bitmap; | |
8673 | } | |
8674 | ||
8675 | /* Appends to 's' a string representation of the set of OFPACT_* represented | |
8676 | * by 'ofpacts_bitmap'. */ | |
8677 | void | |
8678 | ofpact_bitmap_format(uint64_t ofpacts_bitmap, struct ds *s) | |
8679 | { | |
8680 | if (!ofpacts_bitmap) { | |
8681 | ds_put_cstr(s, "<none>"); | |
8682 | } else { | |
8683 | while (ofpacts_bitmap) { | |
8684 | ds_put_format(s, "%s ", | |
8685 | ofpact_name(rightmost_1bit_idx(ofpacts_bitmap))); | |
8686 | ofpacts_bitmap = zero_rightmost_1bit(ofpacts_bitmap); | |
8687 | } | |
8688 | ds_chomp(s, ' '); | |
8689 | } | |
8690 | } | |
8691 | \f | |
f25d0cf3 BP |
8692 | /* Returns true if 'action' outputs to 'port', false otherwise. */ |
8693 | static bool | |
4e022ec0 | 8694 | ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port) |
f25d0cf3 BP |
8695 | { |
8696 | switch (ofpact->type) { | |
8697 | case OFPACT_OUTPUT: | |
8698 | return ofpact_get_OUTPUT(ofpact)->port == port; | |
8699 | case OFPACT_ENQUEUE: | |
8700 | return ofpact_get_ENQUEUE(ofpact)->port == port; | |
8701 | case OFPACT_CONTROLLER: | |
8702 | return port == OFPP_CONTROLLER; | |
8703 | ||
8704 | case OFPACT_OUTPUT_REG: | |
aaca4fe0 | 8705 | case OFPACT_OUTPUT_TRUNC: |
f25d0cf3 BP |
8706 | case OFPACT_BUNDLE: |
8707 | case OFPACT_SET_VLAN_VID: | |
8708 | case OFPACT_SET_VLAN_PCP: | |
8709 | case OFPACT_STRIP_VLAN: | |
3e34fbdd | 8710 | case OFPACT_PUSH_VLAN: |
f25d0cf3 BP |
8711 | case OFPACT_SET_ETH_SRC: |
8712 | case OFPACT_SET_ETH_DST: | |
8713 | case OFPACT_SET_IPV4_SRC: | |
8714 | case OFPACT_SET_IPV4_DST: | |
04f01c24 | 8715 | case OFPACT_SET_IP_DSCP: |
ff14eb7a | 8716 | case OFPACT_SET_IP_ECN: |
0c20dbe4 | 8717 | case OFPACT_SET_IP_TTL: |
f25d0cf3 BP |
8718 | case OFPACT_SET_L4_SRC_PORT: |
8719 | case OFPACT_SET_L4_DST_PORT: | |
8720 | case OFPACT_REG_MOVE: | |
b2dd70be | 8721 | case OFPACT_SET_FIELD: |
bd85dac1 AZ |
8722 | case OFPACT_STACK_PUSH: |
8723 | case OFPACT_STACK_POP: | |
f25d0cf3 | 8724 | case OFPACT_DEC_TTL: |
097d4939 JR |
8725 | case OFPACT_SET_MPLS_LABEL: |
8726 | case OFPACT_SET_MPLS_TC: | |
0f3f3c3d | 8727 | case OFPACT_SET_MPLS_TTL: |
b676167a | 8728 | case OFPACT_DEC_MPLS_TTL: |
f25d0cf3 | 8729 | case OFPACT_SET_TUNNEL: |
4cceacb9 | 8730 | case OFPACT_WRITE_METADATA: |
f25d0cf3 BP |
8731 | case OFPACT_SET_QUEUE: |
8732 | case OFPACT_POP_QUEUE: | |
8733 | case OFPACT_FIN_TIMEOUT: | |
8734 | case OFPACT_RESUBMIT: | |
8735 | case OFPACT_LEARN: | |
18080541 | 8736 | case OFPACT_CONJUNCTION: |
f25d0cf3 | 8737 | case OFPACT_MULTIPATH: |
f25d0cf3 BP |
8738 | case OFPACT_NOTE: |
8739 | case OFPACT_EXIT: | |
e672ff9b | 8740 | case OFPACT_UNROLL_XLATE: |
b02475c5 SH |
8741 | case OFPACT_PUSH_MPLS: |
8742 | case OFPACT_POP_MPLS: | |
29089a54 | 8743 | case OFPACT_SAMPLE: |
b19e8793 | 8744 | case OFPACT_CLEAR_ACTIONS: |
7ae62a67 | 8745 | case OFPACT_CLONE: |
7fdb60a7 | 8746 | case OFPACT_WRITE_ACTIONS: |
8dd54666 | 8747 | case OFPACT_GOTO_TABLE: |
638a19b0 | 8748 | case OFPACT_METER: |
7395c052 | 8749 | case OFPACT_GROUP: |
d4abaff5 | 8750 | case OFPACT_DEBUG_RECIRC: |
a934a3dd | 8751 | case OFPACT_DEBUG_SLOW: |
07659514 | 8752 | case OFPACT_CT: |
72fe7578 | 8753 | case OFPACT_CT_CLEAR: |
9ac0aada | 8754 | case OFPACT_NAT: |
f839892a JS |
8755 | case OFPACT_ENCAP: |
8756 | case OFPACT_DECAP: | |
491e05c2 | 8757 | case OFPACT_DEC_NSH_TTL: |
f25d0cf3 BP |
8758 | default: |
8759 | return false; | |
8760 | } | |
8761 | } | |
8762 | ||
8763 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs | |
8764 | * to 'port', false otherwise. */ | |
8765 | bool | |
8766 | ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len, | |
4e022ec0 | 8767 | ofp_port_t port) |
c2d936a4 BP |
8768 | { |
8769 | const struct ofpact *a; | |
f25d0cf3 | 8770 | |
4f20179d | 8771 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8772 | if (ofpact_outputs_to_port(a, port)) { |
8773 | return true; | |
8774 | } | |
8775 | } | |
f25d0cf3 | 8776 | |
c2d936a4 BP |
8777 | return false; |
8778 | } | |
f25d0cf3 | 8779 | |
c2d936a4 BP |
8780 | /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs |
8781 | * to 'group', false otherwise. */ | |
8782 | bool | |
8783 | ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len, | |
8784 | uint32_t group_id) | |
8785 | { | |
8786 | const struct ofpact *a; | |
b02475c5 | 8787 | |
4f20179d | 8788 | OFPACT_FOR_EACH_FLATTENED (a, ofpacts, ofpacts_len) { |
c2d936a4 BP |
8789 | if (a->type == OFPACT_GROUP |
8790 | && ofpact_get_GROUP(a)->group_id == group_id) { | |
8791 | return true; | |
8792 | } | |
8793 | } | |
b02475c5 | 8794 | |
c2d936a4 BP |
8795 | return false; |
8796 | } | |
8dd54666 | 8797 | |
6cc9d77c BP |
8798 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8799 | * actions in 'b' are bytewise identical. */ | |
c2d936a4 BP |
8800 | bool |
8801 | ofpacts_equal(const struct ofpact *a, size_t a_len, | |
8802 | const struct ofpact *b, size_t b_len) | |
8803 | { | |
8804 | return a_len == b_len && !memcmp(a, b, a_len); | |
8805 | } | |
29089a54 | 8806 | |
6cc9d77c BP |
8807 | /* Returns true if the 'a_len' bytes of actions in 'a' and the 'b_len' bytes of |
8808 | * actions in 'b' are identical when formatted as strings. (Converting actions | |
8809 | * to string form suppresses some rarely meaningful differences, such as the | |
8810 | * 'compat' member of actions.) */ | |
8811 | bool | |
8812 | ofpacts_equal_stringwise(const struct ofpact *a, size_t a_len, | |
8813 | const struct ofpact *b, size_t b_len) | |
8814 | { | |
8815 | struct ds a_s = DS_EMPTY_INITIALIZER; | |
efefbcae BP |
8816 | struct ofpact_format_params a_fp = { .s = &a_s }; |
8817 | ofpacts_format(a, a_len, &a_fp); | |
6cc9d77c | 8818 | |
efefbcae BP |
8819 | struct ds b_s = DS_EMPTY_INITIALIZER; |
8820 | struct ofpact_format_params b_fp = { .s = &b_s }; | |
8821 | ofpacts_format(b, b_len, &b_fp); | |
6cc9d77c BP |
8822 | |
8823 | bool equal = !strcmp(ds_cstr(&a_s), ds_cstr(&b_s)); | |
8824 | ||
8825 | ds_destroy(&a_s); | |
8826 | ds_destroy(&b_s); | |
8827 | ||
8828 | return equal; | |
8829 | } | |
8830 | ||
c2d936a4 BP |
8831 | /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of |
8832 | * 'ofpacts'. If found, returns its meter ID; if not, returns 0. | |
8833 | * | |
8834 | * This function relies on the order of 'ofpacts' being correct (as checked by | |
8835 | * ofpacts_verify()). */ | |
8836 | uint32_t | |
8837 | ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len) | |
8838 | { | |
8839 | const struct ofpact *a; | |
7fdb60a7 | 8840 | |
c2d936a4 BP |
8841 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
8842 | enum ovs_instruction_type inst; | |
b19e8793 | 8843 | |
c2d936a4 BP |
8844 | inst = ovs_instruction_type_from_ofpact_type(a->type); |
8845 | if (a->type == OFPACT_METER) { | |
8846 | return ofpact_get_METER(a)->meter_id; | |
8847 | } else if (inst > OVSINST_OFPIT13_METER) { | |
8848 | break; | |
4cceacb9 | 8849 | } |
c2d936a4 | 8850 | } |
638a19b0 | 8851 | |
c2d936a4 BP |
8852 | return 0; |
8853 | } | |
8854 | \f | |
8855 | /* Formatting ofpacts. */ | |
7395c052 | 8856 | |
c2d936a4 | 8857 | static void |
50f96b10 | 8858 | ofpact_format(const struct ofpact *a, |
efefbcae | 8859 | const struct ofpact_format_params *fp) |
c2d936a4 BP |
8860 | { |
8861 | switch (a->type) { | |
8862 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8863 | case OFPACT_##ENUM: \ | |
efefbcae | 8864 | format_##ENUM(ALIGNED_CAST(const struct STRUCT *, a), fp); \ |
c2d936a4 BP |
8865 | break; |
8866 | OFPACTS | |
8867 | #undef OFPACT | |
8868 | default: | |
8869 | OVS_NOT_REACHED(); | |
f25d0cf3 BP |
8870 | } |
8871 | } | |
8872 | ||
8873 | /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in | |
efefbcae BP |
8874 | * 'ofpacts' to 'fp->s'. If 'port_map' is nonnull, uses it to translate port |
8875 | * numbers to names in output. */ | |
f25d0cf3 BP |
8876 | void |
8877 | ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len, | |
efefbcae | 8878 | const struct ofpact_format_params *fp) |
f25d0cf3 | 8879 | { |
f25d0cf3 | 8880 | if (!ofpacts_len) { |
efefbcae | 8881 | ds_put_format(fp->s, "%sdrop%s", colors.drop, colors.end); |
f25d0cf3 BP |
8882 | } else { |
8883 | const struct ofpact *a; | |
8884 | ||
8885 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
8886 | if (a != ofpacts) { | |
efefbcae | 8887 | ds_put_char(fp->s, ','); |
f25d0cf3 | 8888 | } |
8dd54666 | 8889 | |
efefbcae | 8890 | ofpact_format(a, fp); |
f25d0cf3 BP |
8891 | } |
8892 | } | |
8893 | } | |
8894 | \f | |
8895 | /* Internal use by helpers. */ | |
8896 | ||
ce058104 | 8897 | /* Implementation of ofpact_put_<ENUM>(). */ |
f25d0cf3 BP |
8898 | void * |
8899 | ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len) | |
8900 | { | |
8901 | struct ofpact *ofpact; | |
8902 | ||
6fd6ed71 PS |
8903 | ofpacts->header = ofpbuf_put_uninit(ofpacts, len); |
8904 | ofpact = ofpacts->header; | |
f25d0cf3 BP |
8905 | ofpact_init(ofpact, type, len); |
8906 | return ofpact; | |
8907 | } | |
8908 | ||
ce058104 | 8909 | /* Implementation of ofpact_init_<ENUM>(). */ |
f25d0cf3 BP |
8910 | void |
8911 | ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len) | |
8912 | { | |
8913 | memset(ofpact, 0, len); | |
8914 | ofpact->type = type; | |
c2d936a4 | 8915 | ofpact->raw = -1; |
f25d0cf3 BP |
8916 | ofpact->len = len; |
8917 | } | |
ce058104 BP |
8918 | |
8919 | /* Implementation of ofpact_finish_<ENUM>(). | |
8920 | * | |
8921 | * Finishes composing a variable-length action (begun using | |
2bd318de BP |
8922 | * ofpact_put_<NAME>()), by padding the action to a multiple of OFPACT_ALIGNTO |
8923 | * bytes and updating its embedded length field. See the large comment near | |
ebe12cd3 JS |
8924 | * the end of ofp-actions.h for more information. |
8925 | * | |
8926 | * May reallocate 'ofpacts'. Callers should consider updating their 'ofpact' | |
8927 | * pointer to the return value of this function. */ | |
8928 | void * | |
34abaa3d | 8929 | ofpact_finish(struct ofpbuf *ofpacts, struct ofpact *ofpact) |
f25d0cf3 | 8930 | { |
5308056f JS |
8931 | ptrdiff_t len; |
8932 | ||
6fd6ed71 | 8933 | ovs_assert(ofpact == ofpacts->header); |
5308056f | 8934 | len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact; |
847b5649 | 8935 | ovs_assert(len > 0 && len <= UINT16_MAX); |
5308056f | 8936 | ofpact->len = len; |
2bd318de | 8937 | ofpbuf_padto(ofpacts, OFPACT_ALIGN(ofpacts->size)); |
ebe12cd3 JS |
8938 | |
8939 | return ofpacts->header; | |
f25d0cf3 | 8940 | } |
c2d936a4 | 8941 | \f |
cab50449 | 8942 | static char * OVS_WARN_UNUSED_RESULT |
50f96b10 | 8943 | ofpact_parse(enum ofpact_type type, char *value, |
efefbcae | 8944 | const struct ofpact_parse_params *pp) |
c2d936a4 BP |
8945 | { |
8946 | switch (type) { | |
50f96b10 | 8947 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ |
c2d936a4 | 8948 | case OFPACT_##ENUM: \ |
efefbcae | 8949 | return parse_##ENUM(value, pp); |
c2d936a4 BP |
8950 | OFPACTS |
8951 | #undef OFPACT | |
8952 | default: | |
8953 | OVS_NOT_REACHED(); | |
8954 | } | |
8955 | } | |
8956 | ||
8957 | static bool | |
8958 | ofpact_type_from_name(const char *name, enum ofpact_type *type) | |
8959 | { | |
8960 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) \ | |
8961 | if (!strcasecmp(name, NAME)) { \ | |
8962 | *type = OFPACT_##ENUM; \ | |
8963 | return true; \ | |
8964 | } | |
8965 | OFPACTS | |
8966 | #undef OFPACT | |
8967 | ||
8968 | return false; | |
8969 | } | |
8970 | ||
8971 | /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'. | |
8972 | * | |
8973 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
d824b5b7 JS |
8974 | * error. The caller is responsible for freeing the returned string. |
8975 | * | |
8976 | * If 'outer_action' is specified, indicates that the actions being parsed | |
8977 | * are nested within another action of the type specified in 'outer_action'. */ | |
cab50449 | 8978 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 8979 | ofpacts_parse__(char *str, const struct ofpact_parse_params *pp, |
d824b5b7 | 8980 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
8981 | { |
8982 | int prev_inst = -1; | |
8983 | enum ofperr retval; | |
8984 | char *key, *value; | |
8985 | bool drop = false; | |
8986 | char *pos; | |
8987 | ||
8988 | pos = str; | |
8989 | while (ofputil_parse_key_value(&pos, &key, &value)) { | |
8990 | enum ovs_instruction_type inst = OVSINST_OFPIT11_APPLY_ACTIONS; | |
8991 | enum ofpact_type type; | |
8992 | char *error = NULL; | |
8993 | ofp_port_t port; | |
8994 | ||
8995 | if (ofpact_type_from_name(key, &type)) { | |
efefbcae | 8996 | error = ofpact_parse(type, value, pp); |
c2d936a4 BP |
8997 | inst = ovs_instruction_type_from_ofpact_type(type); |
8998 | } else if (!strcasecmp(key, "mod_vlan_vid")) { | |
efefbcae | 8999 | error = parse_set_vlan_vid(value, true, pp); |
c2d936a4 | 9000 | } else if (!strcasecmp(key, "mod_vlan_pcp")) { |
efefbcae | 9001 | error = parse_set_vlan_pcp(value, true, pp); |
c2d936a4 | 9002 | } else if (!strcasecmp(key, "set_nw_ttl")) { |
efefbcae | 9003 | error = parse_SET_IP_TTL(value, pp); |
c2d936a4 | 9004 | } else if (!strcasecmp(key, "pop_vlan")) { |
efefbcae | 9005 | error = parse_pop_vlan(pp); |
c2d936a4 | 9006 | } else if (!strcasecmp(key, "set_tunnel64")) { |
efefbcae | 9007 | error = parse_set_tunnel(value, NXAST_RAW_SET_TUNNEL64, pp); |
7eb4b1f1 | 9008 | } else if (!strcasecmp(key, "load")) { |
efefbcae | 9009 | error = parse_reg_load(value, pp); |
c2d936a4 | 9010 | } else if (!strcasecmp(key, "bundle_load")) { |
efefbcae | 9011 | error = parse_bundle_load(value, pp); |
c2d936a4 BP |
9012 | } else if (!strcasecmp(key, "drop")) { |
9013 | drop = true; | |
9014 | } else if (!strcasecmp(key, "apply_actions")) { | |
9015 | return xstrdup("apply_actions is the default instruction"); | |
efefbcae BP |
9016 | } else if (ofputil_port_from_string(key, pp->port_map, &port)) { |
9017 | ofpact_put_OUTPUT(pp->ofpacts)->port = port; | |
c2d936a4 BP |
9018 | } else { |
9019 | return xasprintf("unknown action %s", key); | |
9020 | } | |
9021 | if (error) { | |
9022 | return error; | |
9023 | } | |
9024 | ||
9025 | if (inst != OVSINST_OFPIT11_APPLY_ACTIONS) { | |
9026 | if (!allow_instructions) { | |
9027 | return xasprintf("only actions are allowed here (not " | |
9028 | "instruction %s)", | |
9029 | ovs_instruction_name_from_type(inst)); | |
9030 | } | |
9031 | if (inst == prev_inst) { | |
9032 | return xasprintf("instruction %s may be specified only once", | |
9033 | ovs_instruction_name_from_type(inst)); | |
9034 | } | |
9035 | } | |
9036 | if (prev_inst != -1 && inst < prev_inst) { | |
9037 | return xasprintf("instruction %s must be specified before %s", | |
9038 | ovs_instruction_name_from_type(inst), | |
9039 | ovs_instruction_name_from_type(prev_inst)); | |
9040 | } | |
9041 | prev_inst = inst; | |
9042 | } | |
c2d936a4 | 9043 | |
efefbcae | 9044 | if (drop && pp->ofpacts->size) { |
c2d936a4 BP |
9045 | return xstrdup("\"drop\" must not be accompanied by any other action " |
9046 | "or instruction"); | |
9047 | } | |
9048 | ||
efefbcae | 9049 | retval = ofpacts_verify(pp->ofpacts->data, pp->ofpacts->size, |
c2d936a4 BP |
9050 | (allow_instructions |
9051 | ? (1u << N_OVS_INSTRUCTIONS) - 1 | |
d824b5b7 JS |
9052 | : 1u << OVSINST_OFPIT11_APPLY_ACTIONS), |
9053 | outer_action); | |
c2d936a4 BP |
9054 | if (retval) { |
9055 | return xstrdup("Incorrect instruction ordering"); | |
9056 | } | |
9057 | ||
9058 | return NULL; | |
9059 | } | |
9060 | ||
cab50449 | 9061 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9062 | ofpacts_parse(char *str, const struct ofpact_parse_params *pp, |
50f96b10 | 9063 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 | 9064 | { |
efefbcae BP |
9065 | uint32_t orig_size = pp->ofpacts->size; |
9066 | char *error = ofpacts_parse__(str, pp, allow_instructions, outer_action); | |
c2d936a4 | 9067 | if (error) { |
efefbcae | 9068 | pp->ofpacts->size = orig_size; |
c2d936a4 BP |
9069 | } |
9070 | return error; | |
9071 | } | |
9072 | ||
cab50449 | 9073 | static char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9074 | ofpacts_parse_copy(const char *s_, const struct ofpact_parse_params *pp, |
d824b5b7 | 9075 | bool allow_instructions, enum ofpact_type outer_action) |
c2d936a4 BP |
9076 | { |
9077 | char *error, *s; | |
9078 | ||
efefbcae | 9079 | *pp->usable_protocols = OFPUTIL_P_ANY; |
c2d936a4 BP |
9080 | |
9081 | s = xstrdup(s_); | |
efefbcae | 9082 | error = ofpacts_parse(s, pp, allow_instructions, outer_action); |
c2d936a4 BP |
9083 | free(s); |
9084 | ||
9085 | return error; | |
9086 | } | |
9087 | ||
9088 | /* Parses 's' as a set of OpenFlow actions and appends the actions to | |
d824b5b7 JS |
9089 | * 'ofpacts'. 'outer_action', if nonzero, specifies that 's' contains actions |
9090 | * that are nested within the action of type 'outer_action'. | |
c2d936a4 BP |
9091 | * |
9092 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
9093 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 9094 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9095 | ofpacts_parse_actions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 9096 | { |
efefbcae | 9097 | return ofpacts_parse_copy(s, pp, false, 0); |
c2d936a4 BP |
9098 | } |
9099 | ||
9100 | /* Parses 's' as a set of OpenFlow instructions and appends the instructions to | |
9101 | * 'ofpacts'. | |
9102 | * | |
9103 | * Returns NULL if successful, otherwise a malloc()'d string describing the | |
9104 | * error. The caller is responsible for freeing the returned string. */ | |
cab50449 | 9105 | char * OVS_WARN_UNUSED_RESULT |
efefbcae | 9106 | ofpacts_parse_instructions(const char *s, const struct ofpact_parse_params *pp) |
c2d936a4 | 9107 | { |
efefbcae | 9108 | return ofpacts_parse_copy(s, pp, true, 0); |
c2d936a4 | 9109 | } |
08d1e234 BP |
9110 | |
9111 | const char * | |
9112 | ofpact_name(enum ofpact_type type) | |
9113 | { | |
9114 | switch (type) { | |
9115 | #define OFPACT(ENUM, STRUCT, MEMBER, NAME) case OFPACT_##ENUM: return NAME; | |
9116 | OFPACTS | |
9117 | #undef OFPACT | |
9118 | } | |
9119 | return "<unknown>"; | |
9120 | } | |
c2d936a4 BP |
9121 | \f |
9122 | /* Low-level action decoding and encoding functions. */ | |
9123 | ||
9124 | /* Everything needed to identify a particular OpenFlow action. */ | |
9125 | struct ofpact_hdrs { | |
9126 | uint32_t vendor; /* 0 if standard, otherwise a vendor code. */ | |
9127 | uint16_t type; /* Type if standard, otherwise subtype. */ | |
9128 | uint8_t ofp_version; /* From ofp_header. */ | |
9129 | }; | |
9130 | ||
9131 | /* Information about a particular OpenFlow action. */ | |
9132 | struct ofpact_raw_instance { | |
9133 | /* The action's identity. */ | |
9134 | struct ofpact_hdrs hdrs; | |
9135 | enum ofp_raw_action_type raw; | |
9136 | ||
9137 | /* Looking up the action. */ | |
9138 | struct hmap_node decode_node; /* Based on 'hdrs'. */ | |
9139 | struct hmap_node encode_node; /* Based on 'raw' + 'hdrs.ofp_version'. */ | |
9140 | ||
9141 | /* The action's encoded size. | |
9142 | * | |
9143 | * If this action is fixed-length, 'min_length' == 'max_length'. | |
9144 | * If it is variable length, then 'max_length' is ROUND_DOWN(UINT16_MAX, | |
9145 | * OFP_ACTION_ALIGN) == 65528. */ | |
9146 | unsigned short int min_length; | |
9147 | unsigned short int max_length; | |
9148 | ||
9149 | /* For actions with a simple integer numeric argument, 'arg_ofs' is the | |
9150 | * offset of that argument from the beginning of the action and 'arg_len' | |
9151 | * its length, both in bytes. | |
9152 | * | |
9153 | * For actions that take other forms, these are both zero. */ | |
9154 | unsigned short int arg_ofs; | |
9155 | unsigned short int arg_len; | |
9156 | ||
9157 | /* The name of the action, e.g. "OFPAT_OUTPUT" or "NXAST_RESUBMIT". */ | |
9158 | const char *name; | |
9159 | ||
9160 | /* If this action is deprecated, a human-readable string with a brief | |
9161 | * explanation. */ | |
9162 | const char *deprecation; | |
9163 | }; | |
9164 | ||
9165 | /* Action header. */ | |
9166 | struct ofp_action_header { | |
9167 | /* The meaning of other values of 'type' generally depends on the OpenFlow | |
9168 | * version (see enum ofp_raw_action_type). | |
9169 | * | |
9170 | * Across all OpenFlow versions, OFPAT_VENDOR indicates that 'vendor' | |
9171 | * designates an OpenFlow vendor ID and that the remainder of the action | |
9172 | * structure has a vendor-defined meaning. | |
9173 | */ | |
9174 | #define OFPAT_VENDOR 0xffff | |
9175 | ovs_be16 type; | |
9176 | ||
9177 | /* Always a multiple of 8. */ | |
9178 | ovs_be16 len; | |
9179 | ||
9180 | /* For type == OFPAT_VENDOR only, this is a vendor ID, e.g. NX_VENDOR_ID or | |
9181 | * ONF_VENDOR_ID. Other 'type's use this space for some other purpose. */ | |
9182 | ovs_be32 vendor; | |
9183 | }; | |
9184 | OFP_ASSERT(sizeof(struct ofp_action_header) == 8); | |
9185 | ||
c2d936a4 BP |
9186 | static bool |
9187 | ofpact_hdrs_equal(const struct ofpact_hdrs *a, | |
9188 | const struct ofpact_hdrs *b) | |
9189 | { | |
9190 | return (a->vendor == b->vendor | |
9191 | && a->type == b->type | |
9192 | && a->ofp_version == b->ofp_version); | |
9193 | } | |
9194 | ||
9195 | static uint32_t | |
9196 | ofpact_hdrs_hash(const struct ofpact_hdrs *hdrs) | |
9197 | { | |
a02f9a62 BP |
9198 | return hash_2words(hdrs->vendor, |
9199 | ((uint32_t) hdrs->type << 16) | hdrs->ofp_version); | |
c2d936a4 BP |
9200 | } |
9201 | ||
9202 | #include "ofp-actions.inc2" | |
9203 | ||
9204 | static struct hmap * | |
9205 | ofpact_decode_hmap(void) | |
9206 | { | |
9207 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
9208 | static struct hmap hmap; | |
9209 | ||
9210 | if (ovsthread_once_start(&once)) { | |
9211 | struct ofpact_raw_instance *inst; | |
9212 | ||
9213 | hmap_init(&hmap); | |
9214 | for (inst = all_raw_instances; | |
9215 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
9216 | inst++) { | |
9217 | hmap_insert(&hmap, &inst->decode_node, | |
9218 | ofpact_hdrs_hash(&inst->hdrs)); | |
9219 | } | |
9220 | ovsthread_once_done(&once); | |
9221 | } | |
9222 | return &hmap; | |
9223 | } | |
9224 | ||
9225 | static struct hmap * | |
9226 | ofpact_encode_hmap(void) | |
9227 | { | |
9228 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
9229 | static struct hmap hmap; | |
9230 | ||
9231 | if (ovsthread_once_start(&once)) { | |
9232 | struct ofpact_raw_instance *inst; | |
9233 | ||
9234 | hmap_init(&hmap); | |
9235 | for (inst = all_raw_instances; | |
9236 | inst < &all_raw_instances[ARRAY_SIZE(all_raw_instances)]; | |
9237 | inst++) { | |
9238 | hmap_insert(&hmap, &inst->encode_node, | |
9239 | hash_2words(inst->raw, inst->hdrs.ofp_version)); | |
9240 | } | |
9241 | ovsthread_once_done(&once); | |
9242 | } | |
9243 | return &hmap; | |
9244 | } | |
9245 | ||
9246 | static enum ofperr | |
9247 | ofpact_decode_raw(enum ofp_version ofp_version, | |
9248 | const struct ofp_action_header *oah, size_t length, | |
9249 | const struct ofpact_raw_instance **instp) | |
9250 | { | |
9251 | const struct ofpact_raw_instance *inst; | |
9252 | struct ofpact_hdrs hdrs; | |
9253 | ||
9254 | *instp = NULL; | |
9255 | if (length < sizeof *oah) { | |
9256 | return OFPERR_OFPBAC_BAD_LEN; | |
9257 | } | |
9258 | ||
9259 | /* Get base action type. */ | |
9260 | if (oah->type == htons(OFPAT_VENDOR)) { | |
9261 | /* Get vendor. */ | |
9262 | hdrs.vendor = ntohl(oah->vendor); | |
232c1e12 BP |
9263 | if (hdrs.vendor == NX_VENDOR_ID || hdrs.vendor == ONF_VENDOR_ID) { |
9264 | /* Get extension subtype. */ | |
9265 | const struct ext_action_header *nah; | |
c2d936a4 | 9266 | |
232c1e12 | 9267 | nah = ALIGNED_CAST(const struct ext_action_header *, oah); |
c2d936a4 BP |
9268 | if (length < sizeof *nah) { |
9269 | return OFPERR_OFPBAC_BAD_LEN; | |
9270 | } | |
9271 | hdrs.type = ntohs(nah->subtype); | |
9272 | } else { | |
9273 | VLOG_WARN_RL(&rl, "OpenFlow action has unknown vendor %#"PRIx32, | |
9274 | hdrs.vendor); | |
9275 | return OFPERR_OFPBAC_BAD_VENDOR; | |
9276 | } | |
9277 | } else { | |
9278 | hdrs.vendor = 0; | |
9279 | hdrs.type = ntohs(oah->type); | |
9280 | } | |
9281 | ||
9282 | hdrs.ofp_version = ofp_version; | |
9283 | HMAP_FOR_EACH_WITH_HASH (inst, decode_node, ofpact_hdrs_hash(&hdrs), | |
9284 | ofpact_decode_hmap()) { | |
9285 | if (ofpact_hdrs_equal(&hdrs, &inst->hdrs)) { | |
9286 | *instp = inst; | |
9287 | return 0; | |
9288 | } | |
9289 | } | |
9290 | ||
77b7d232 BP |
9291 | VLOG_WARN_RL(&rl, "unknown %s action for vendor %#"PRIx32" and " |
9292 | "type %"PRIu16, ofputil_version_to_string(ofp_version), | |
9293 | hdrs.vendor, hdrs.type); | |
c2d936a4 BP |
9294 | return (hdrs.vendor |
9295 | ? OFPERR_OFPBAC_BAD_VENDOR_TYPE | |
9296 | : OFPERR_OFPBAC_BAD_TYPE); | |
9297 | } | |
9298 | ||
9299 | static enum ofperr | |
9300 | ofpact_pull_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9301 | enum ofp_raw_action_type *raw, uint64_t *arg) | |
9302 | { | |
6fd6ed71 | 9303 | const struct ofp_action_header *oah = buf->data; |
c2d936a4 BP |
9304 | const struct ofpact_raw_instance *action; |
9305 | unsigned int length; | |
9306 | enum ofperr error; | |
9307 | ||
9308 | *raw = *arg = 0; | |
6fd6ed71 | 9309 | error = ofpact_decode_raw(ofp_version, oah, buf->size, &action); |
c2d936a4 BP |
9310 | if (error) { |
9311 | return error; | |
9312 | } | |
9313 | ||
9314 | if (action->deprecation) { | |
9315 | VLOG_INFO_RL(&rl, "%s is deprecated in %s (%s)", | |
9316 | action->name, ofputil_version_to_string(ofp_version), | |
9317 | action->deprecation); | |
9318 | } | |
9319 | ||
9320 | length = ntohs(oah->len); | |
6fd6ed71 | 9321 | if (length > buf->size) { |
b153b990 | 9322 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u exceeds action buffer " |
6fd6ed71 | 9323 | "length %"PRIu32, action->name, length, buf->size); |
b153b990 BP |
9324 | return OFPERR_OFPBAC_BAD_LEN; |
9325 | } | |
c2d936a4 BP |
9326 | if (length < action->min_length || length > action->max_length) { |
9327 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u not in valid range " | |
9328 | "[%hu,%hu]", action->name, length, | |
9329 | action->min_length, action->max_length); | |
9330 | return OFPERR_OFPBAC_BAD_LEN; | |
9331 | } | |
9332 | if (length % 8) { | |
9333 | VLOG_WARN_RL(&rl, "OpenFlow action %s length %u is not a multiple " | |
9334 | "of 8", action->name, length); | |
9335 | return OFPERR_OFPBAC_BAD_LEN; | |
9336 | } | |
9337 | ||
9338 | *raw = action->raw; | |
9339 | *arg = 0; | |
9340 | if (action->arg_len) { | |
9341 | const uint8_t *p; | |
9342 | int i; | |
9343 | ||
9344 | p = ofpbuf_at_assert(buf, action->arg_ofs, action->arg_len); | |
9345 | for (i = 0; i < action->arg_len; i++) { | |
9346 | *arg = (*arg << 8) | p[i]; | |
9347 | } | |
9348 | } | |
9349 | ||
9350 | ofpbuf_pull(buf, length); | |
9351 | ||
9352 | return 0; | |
9353 | } | |
9354 | ||
9355 | static const struct ofpact_raw_instance * | |
9356 | ofpact_raw_lookup(enum ofp_version ofp_version, enum ofp_raw_action_type raw) | |
9357 | { | |
9358 | const struct ofpact_raw_instance *inst; | |
9359 | ||
9360 | HMAP_FOR_EACH_WITH_HASH (inst, encode_node, hash_2words(raw, ofp_version), | |
9361 | ofpact_encode_hmap()) { | |
9362 | if (inst->raw == raw && inst->hdrs.ofp_version == ofp_version) { | |
9363 | return inst; | |
9364 | } | |
9365 | } | |
9366 | OVS_NOT_REACHED(); | |
9367 | } | |
9368 | ||
9369 | static void * | |
9370 | ofpact_put_raw(struct ofpbuf *buf, enum ofp_version ofp_version, | |
9371 | enum ofp_raw_action_type raw, uint64_t arg) | |
9372 | { | |
9373 | const struct ofpact_raw_instance *inst; | |
9374 | struct ofp_action_header *oah; | |
9375 | const struct ofpact_hdrs *hdrs; | |
9376 | ||
9377 | inst = ofpact_raw_lookup(ofp_version, raw); | |
9378 | hdrs = &inst->hdrs; | |
9379 | ||
9380 | oah = ofpbuf_put_zeros(buf, inst->min_length); | |
9381 | oah->type = htons(hdrs->vendor ? OFPAT_VENDOR : hdrs->type); | |
9382 | oah->len = htons(inst->min_length); | |
9383 | oah->vendor = htonl(hdrs->vendor); | |
9384 | ||
9385 | switch (hdrs->vendor) { | |
9386 | case 0: | |
9387 | break; | |
9388 | ||
232c1e12 BP |
9389 | case NX_VENDOR_ID: |
9390 | case ONF_VENDOR_ID: { | |
9391 | struct ext_action_header *nah = (struct ext_action_header *) oah; | |
c2d936a4 BP |
9392 | nah->subtype = htons(hdrs->type); |
9393 | break; | |
9394 | } | |
9395 | ||
9396 | default: | |
9397 | OVS_NOT_REACHED(); | |
9398 | } | |
9399 | ||
9400 | if (inst->arg_len) { | |
9401 | uint8_t *p = (uint8_t *) oah + inst->arg_ofs + inst->arg_len; | |
9402 | int i; | |
9403 | ||
9404 | for (i = 0; i < inst->arg_len; i++) { | |
9405 | *--p = arg; | |
9406 | arg >>= 8; | |
9407 | } | |
9408 | } else { | |
9409 | ovs_assert(!arg); | |
9410 | } | |
9411 | ||
9412 | return oah; | |
9413 | } | |
178742f9 BP |
9414 | |
9415 | static void | |
9416 | pad_ofpat(struct ofpbuf *openflow, size_t start_ofs) | |
9417 | { | |
9418 | struct ofp_action_header *oah; | |
9419 | ||
9ac0aada JR |
9420 | ofpbuf_put_zeros(openflow, PAD_SIZE(openflow->size - start_ofs, |
9421 | OFP_ACTION_ALIGN)); | |
178742f9 BP |
9422 | |
9423 | oah = ofpbuf_at_assert(openflow, start_ofs, sizeof *oah); | |
6fd6ed71 | 9424 | oah->len = htons(openflow->size - start_ofs); |
178742f9 BP |
9425 | } |
9426 |