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6a885fd0 | 1 | /* |
cb22974d | 2 | * Copyright (c) 2011, 2012, 2013 Nicira, Inc. |
6a885fd0 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> | |
18 | ||
19 | #include "meta-flow.h" | |
20 | ||
6a885fd0 BP |
21 | #include <errno.h> |
22 | #include <limits.h> | |
23 | #include <netinet/icmp6.h> | |
24 | #include <netinet/ip6.h> | |
25 | ||
26 | #include "classifier.h" | |
27 | #include "dynamic-string.h" | |
816fd533 | 28 | #include "ofp-errors.h" |
6a885fd0 | 29 | #include "ofp-util.h" |
4663f9e0 | 30 | #include "ovs-thread.h" |
6a885fd0 BP |
31 | #include "packets.h" |
32 | #include "random.h" | |
33 | #include "shash.h" | |
34 | #include "socket-util.h" | |
35 | #include "unaligned.h" | |
816fd533 BP |
36 | #include "vlog.h" |
37 | ||
38 | VLOG_DEFINE_THIS_MODULE(meta_flow); | |
6a885fd0 BP |
39 | |
40 | #define MF_FIELD_SIZES(MEMBER) \ | |
41 | sizeof ((union mf_value *)0)->MEMBER, \ | |
42 | 8 * sizeof ((union mf_value *)0)->MEMBER | |
43 | ||
44 | static const struct mf_field mf_fields[MFF_N_IDS] = { | |
45 | /* ## -------- ## */ | |
46 | /* ## metadata ## */ | |
47 | /* ## -------- ## */ | |
48 | ||
49 | { | |
50 | MFF_TUN_ID, "tun_id", NULL, | |
51 | MF_FIELD_SIZES(be64), | |
0bdc4bec | 52 | MFM_FULLY, |
6a885fd0 BP |
53 | MFS_HEXADECIMAL, |
54 | MFP_NONE, | |
28da1f8f BP |
55 | true, |
56 | NXM_NX_TUN_ID, "NXM_NX_TUN_ID", | |
2f2eb46c | 57 | OXM_OF_TUNNEL_ID, "OXM_OF_TUNNEL_ID", |
db0b6c29 JR |
58 | OFPUTIL_P_NXM_OXM_ANY, |
59 | OFPUTIL_P_NXM_OXM_ANY, | |
4fe3445a PS |
60 | }, { |
61 | MFF_TUN_SRC, "tun_src", NULL, | |
62 | MF_FIELD_SIZES(be32), | |
0ad90c84 | 63 | MFM_FULLY, |
4fe3445a PS |
64 | MFS_IPV4, |
65 | MFP_NONE, | |
0ad90c84 JR |
66 | true, |
67 | NXM_NX_TUN_IPV4_SRC, "NXM_NX_TUN_IPV4_SRC", | |
68 | NXM_NX_TUN_IPV4_SRC, "NXM_NX_TUN_IPV4_SRC", | |
db0b6c29 JR |
69 | OFPUTIL_P_NXM_OXM_ANY, |
70 | OFPUTIL_P_NXM_OXM_ANY, | |
4fe3445a PS |
71 | }, { |
72 | MFF_TUN_DST, "tun_dst", NULL, | |
73 | MF_FIELD_SIZES(be32), | |
0ad90c84 | 74 | MFM_FULLY, |
4fe3445a PS |
75 | MFS_IPV4, |
76 | MFP_NONE, | |
0ad90c84 JR |
77 | true, |
78 | NXM_NX_TUN_IPV4_DST, "NXM_NX_TUN_IPV4_DST", | |
79 | NXM_NX_TUN_IPV4_DST, "NXM_NX_TUN_IPV4_DST", | |
db0b6c29 JR |
80 | OFPUTIL_P_NXM_OXM_ANY, |
81 | OFPUTIL_P_NXM_OXM_ANY, | |
4fe3445a PS |
82 | }, { |
83 | MFF_TUN_FLAGS, "tun_flags", NULL, | |
84 | MF_FIELD_SIZES(be16), | |
85 | MFM_NONE, | |
86 | MFS_TNL_FLAGS, | |
87 | MFP_NONE, | |
88 | false, | |
89 | 0, NULL, | |
90 | 0, NULL, | |
db0b6c29 JR |
91 | OFPUTIL_P_NONE, |
92 | OFPUTIL_P_NONE, | |
4fe3445a PS |
93 | }, { |
94 | MFF_TUN_TOS, "tun_tos", NULL, | |
95 | MF_FIELD_SIZES(u8), | |
96 | MFM_NONE, | |
97 | MFS_DECIMAL, | |
98 | MFP_NONE, | |
99 | false, | |
100 | 0, NULL, | |
101 | 0, NULL, | |
db0b6c29 JR |
102 | OFPUTIL_P_NONE, |
103 | OFPUTIL_P_NONE, | |
4fe3445a PS |
104 | }, { |
105 | MFF_TUN_TTL, "tun_ttl", NULL, | |
106 | MF_FIELD_SIZES(u8), | |
107 | MFM_NONE, | |
108 | MFS_DECIMAL, | |
109 | MFP_NONE, | |
110 | false, | |
111 | 0, NULL, | |
112 | 0, NULL, | |
db0b6c29 JR |
113 | OFPUTIL_P_NONE, |
114 | OFPUTIL_P_NONE, | |
969fc56c JS |
115 | }, { |
116 | MFF_METADATA, "metadata", NULL, | |
117 | MF_FIELD_SIZES(be64), | |
0bdc4bec | 118 | MFM_FULLY, |
969fc56c JS |
119 | MFS_HEXADECIMAL, |
120 | MFP_NONE, | |
121 | true, | |
122 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
123 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
db0b6c29 JR |
124 | OFPUTIL_P_NXM_OF11_UP, |
125 | OFPUTIL_P_NXM_OF11_UP, | |
6a885fd0 BP |
126 | }, { |
127 | MFF_IN_PORT, "in_port", NULL, | |
128 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 129 | MFM_NONE, |
6a885fd0 BP |
130 | MFS_OFP_PORT, |
131 | MFP_NONE, | |
557323cd | 132 | true, |
28da1f8f | 133 | NXM_OF_IN_PORT, "NXM_OF_IN_PORT", |
72333065 | 134 | NXM_OF_IN_PORT, "NXM_OF_IN_PORT", |
db0b6c29 JR |
135 | OFPUTIL_P_ANY, /* OF11+ via mapping to 32 bits. */ |
136 | OFPUTIL_P_NONE, | |
72333065 JR |
137 | }, { |
138 | MFF_IN_PORT_OXM, "in_port_oxm", NULL, | |
139 | MF_FIELD_SIZES(be32), | |
140 | MFM_NONE, | |
141 | MFS_OFP_PORT_OXM, | |
142 | MFP_NONE, | |
143 | true, | |
144 | OXM_OF_IN_PORT, "OXM_OF_IN_PORT", | |
36f3999b | 145 | OXM_OF_IN_PORT, "OXM_OF_IN_PORT", |
db0b6c29 JR |
146 | OFPUTIL_P_OF11_UP, |
147 | OFPUTIL_P_NONE, | |
1b567fb9 AA |
148 | }, { |
149 | MFF_SKB_PRIORITY, "skb_priority", NULL, | |
150 | MF_FIELD_SIZES(be32), | |
151 | MFM_NONE, | |
152 | MFS_HEXADECIMAL, | |
153 | MFP_NONE, | |
154 | false, | |
155 | 0, NULL, | |
156 | 0, NULL, | |
db0b6c29 JR |
157 | OFPUTIL_P_NONE, |
158 | OFPUTIL_P_NONE, | |
1b567fb9 | 159 | }, { |
1362e248 | 160 | MFF_PKT_MARK, "pkt_mark", NULL, |
1b567fb9 | 161 | MF_FIELD_SIZES(be32), |
ac923e91 | 162 | MFM_FULLY, |
1b567fb9 AA |
163 | MFS_HEXADECIMAL, |
164 | MFP_NONE, | |
ac923e91 JG |
165 | true, |
166 | NXM_NX_PKT_MARK, "NXM_NX_PKT_MARK", | |
167 | NXM_NX_PKT_MARK, "NXM_NX_PKT_MARK", | |
db0b6c29 JR |
168 | OFPUTIL_P_NXM_OXM_ANY, |
169 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
170 | }, |
171 | ||
172 | #define REGISTER(IDX) \ | |
173 | { \ | |
174 | MFF_REG##IDX, "reg" #IDX, NULL, \ | |
175 | MF_FIELD_SIZES(be32), \ | |
0bdc4bec | 176 | MFM_FULLY, \ |
6a885fd0 BP |
177 | MFS_HEXADECIMAL, \ |
178 | MFP_NONE, \ | |
28da1f8f | 179 | true, \ |
b5e5143b BP |
180 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ |
181 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ | |
db0b6c29 JR |
182 | OFPUTIL_P_NXM_OXM_ANY, \ |
183 | OFPUTIL_P_NXM_OXM_ANY, \ | |
6a885fd0 BP |
184 | } |
185 | #if FLOW_N_REGS > 0 | |
186 | REGISTER(0), | |
187 | #endif | |
188 | #if FLOW_N_REGS > 1 | |
189 | REGISTER(1), | |
190 | #endif | |
191 | #if FLOW_N_REGS > 2 | |
192 | REGISTER(2), | |
193 | #endif | |
194 | #if FLOW_N_REGS > 3 | |
195 | REGISTER(3), | |
196 | #endif | |
197 | #if FLOW_N_REGS > 4 | |
d2c0fed9 JP |
198 | REGISTER(4), |
199 | #endif | |
200 | #if FLOW_N_REGS > 5 | |
e9358af6 EJ |
201 | REGISTER(5), |
202 | #endif | |
203 | #if FLOW_N_REGS > 6 | |
204 | REGISTER(6), | |
205 | #endif | |
206 | #if FLOW_N_REGS > 7 | |
207 | REGISTER(7), | |
208 | #endif | |
209 | #if FLOW_N_REGS > 8 | |
6a885fd0 BP |
210 | #error |
211 | #endif | |
212 | ||
213 | /* ## -- ## */ | |
214 | /* ## L2 ## */ | |
215 | /* ## -- ## */ | |
216 | ||
217 | { | |
218 | MFF_ETH_SRC, "eth_src", "dl_src", | |
219 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 220 | MFM_FULLY, |
6a885fd0 BP |
221 | MFS_ETHERNET, |
222 | MFP_NONE, | |
28da1f8f BP |
223 | true, |
224 | NXM_OF_ETH_SRC, "NXM_OF_ETH_SRC", | |
36f3999b | 225 | OXM_OF_ETH_SRC, "OXM_OF_ETH_SRC", |
db0b6c29 JR |
226 | OFPUTIL_P_ANY, |
227 | OFPUTIL_P_NXM_OF11_UP, /* Bitwise masking only with NXM and OF11+! */ | |
6a885fd0 BP |
228 | }, { |
229 | MFF_ETH_DST, "eth_dst", "dl_dst", | |
230 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 231 | MFM_FULLY, |
6a885fd0 BP |
232 | MFS_ETHERNET, |
233 | MFP_NONE, | |
28da1f8f BP |
234 | true, |
235 | NXM_OF_ETH_DST, "NXM_OF_ETH_DST", | |
36f3999b | 236 | OXM_OF_ETH_DST, "OXM_OF_ETH_DST", |
db0b6c29 JR |
237 | OFPUTIL_P_ANY, |
238 | OFPUTIL_P_NXM_OF11_UP, /* Bitwise masking only with NXM and OF11+! */ | |
6a885fd0 BP |
239 | }, { |
240 | MFF_ETH_TYPE, "eth_type", "dl_type", | |
241 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 242 | MFM_NONE, |
6a885fd0 BP |
243 | MFS_HEXADECIMAL, |
244 | MFP_NONE, | |
28da1f8f BP |
245 | false, |
246 | NXM_OF_ETH_TYPE, "NXM_OF_ETH_TYPE", | |
36f3999b | 247 | OXM_OF_ETH_TYPE, "OXM_OF_ETH_TYPE", |
db0b6c29 JR |
248 | OFPUTIL_P_ANY, |
249 | OFPUTIL_P_NONE, | |
6a885fd0 BP |
250 | }, |
251 | ||
252 | { | |
253 | MFF_VLAN_TCI, "vlan_tci", NULL, | |
254 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 255 | MFM_FULLY, |
6a885fd0 BP |
256 | MFS_HEXADECIMAL, |
257 | MFP_NONE, | |
28da1f8f BP |
258 | true, |
259 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", | |
b5e5143b | 260 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", |
db0b6c29 JR |
261 | OFPUTIL_P_ANY, |
262 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 | 263 | }, { |
441c57a9 | 264 | MFF_DL_VLAN, "dl_vlan", NULL, |
6a885fd0 | 265 | sizeof(ovs_be16), 12, |
0bdc4bec | 266 | MFM_NONE, |
6a885fd0 BP |
267 | MFS_DECIMAL, |
268 | MFP_NONE, | |
28da1f8f | 269 | true, |
cc34bc8c BP |
270 | 0, NULL, |
271 | 0, NULL, | |
db0b6c29 JR |
272 | OFPUTIL_P_ANY, |
273 | OFPUTIL_P_NXM_OXM_ANY, | |
cc34bc8c BP |
274 | }, { |
275 | MFF_VLAN_VID, "vlan_vid", NULL, | |
276 | sizeof(ovs_be16), 12, | |
0bdc4bec | 277 | MFM_FULLY, |
cc34bc8c BP |
278 | MFS_DECIMAL, |
279 | MFP_NONE, | |
280 | true, | |
b5e5143b | 281 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
36f3999b | 282 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
db0b6c29 JR |
283 | OFPUTIL_P_ANY, |
284 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 | 285 | }, { |
441c57a9 | 286 | MFF_DL_VLAN_PCP, "dl_vlan_pcp", NULL, |
6a885fd0 | 287 | 1, 3, |
0bdc4bec | 288 | MFM_NONE, |
6a885fd0 BP |
289 | MFS_DECIMAL, |
290 | MFP_NONE, | |
28da1f8f | 291 | true, |
cc34bc8c BP |
292 | 0, NULL, |
293 | 0, NULL, | |
db0b6c29 JR |
294 | OFPUTIL_P_ANY, /* Will be mapped to NXM and OXM. */ |
295 | OFPUTIL_P_NONE, | |
cc34bc8c BP |
296 | }, { |
297 | MFF_VLAN_PCP, "vlan_pcp", NULL, | |
298 | 1, 3, | |
0bdc4bec | 299 | MFM_NONE, |
cc34bc8c | 300 | MFS_DECIMAL, |
8069b0da | 301 | MFP_VLAN_VID, |
cc34bc8c | 302 | true, |
b5e5143b | 303 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
36f3999b | 304 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
db0b6c29 JR |
305 | OFPUTIL_P_ANY, /* Will be mapped to OF10 and NXM. */ |
306 | OFPUTIL_P_NONE, | |
6a885fd0 BP |
307 | }, |
308 | ||
b02475c5 SH |
309 | /* ## ---- ## */ |
310 | /* ## L2.5 ## */ | |
311 | /* ## ---- ## */ | |
312 | { | |
313 | MFF_MPLS_LABEL, "mpls_label", NULL, | |
314 | 4, 20, | |
315 | MFM_NONE, | |
316 | MFS_DECIMAL, | |
317 | MFP_MPLS, | |
318 | true, | |
319 | OXM_OF_MPLS_LABEL, "OXM_OF_MPLS_LABEL", | |
320 | OXM_OF_MPLS_LABEL, "OXM_OF_MPLS_LABEL", | |
db0b6c29 JR |
321 | OFPUTIL_P_NXM_OF11_UP, |
322 | OFPUTIL_P_NONE, | |
b02475c5 SH |
323 | }, { |
324 | MFF_MPLS_TC, "mpls_tc", NULL, | |
325 | 1, 3, | |
326 | MFM_NONE, | |
327 | MFS_DECIMAL, | |
328 | MFP_MPLS, | |
329 | true, | |
330 | OXM_OF_MPLS_TC, "OXM_OF_MPLS_TC", | |
331 | OXM_OF_MPLS_TC, "OXM_OF_MPLS_TC", | |
db0b6c29 JR |
332 | OFPUTIL_P_NXM_OF11_UP, |
333 | OFPUTIL_P_NONE, | |
b02475c5 SH |
334 | }, { |
335 | MFF_MPLS_BOS, "mpls_bos", NULL, | |
336 | 1, 1, | |
337 | MFM_NONE, | |
338 | MFS_DECIMAL, | |
339 | MFP_MPLS, | |
340 | false, | |
341 | OXM_OF_MPLS_BOS, "OXM_OF_MPLS_BOS", | |
342 | OXM_OF_MPLS_BOS, "OXM_OF_MPLS_BOS", | |
db0b6c29 JR |
343 | OFPUTIL_P_NXM_OXM_ANY, |
344 | OFPUTIL_P_NONE, | |
b02475c5 SH |
345 | }, |
346 | ||
6a885fd0 BP |
347 | /* ## -- ## */ |
348 | /* ## L3 ## */ | |
349 | /* ## -- ## */ | |
350 | ||
351 | { | |
352 | MFF_IPV4_SRC, "ip_src", "nw_src", | |
353 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 354 | MFM_FULLY, |
6a885fd0 BP |
355 | MFS_IPV4, |
356 | MFP_IPV4, | |
28da1f8f BP |
357 | true, |
358 | NXM_OF_IP_SRC, "NXM_OF_IP_SRC", | |
36f3999b | 359 | OXM_OF_IPV4_SRC, "OXM_OF_IPV4_SRC", |
db0b6c29 JR |
360 | OFPUTIL_P_ANY, |
361 | OFPUTIL_P_NXM_OF11_UP, | |
6a885fd0 BP |
362 | }, { |
363 | MFF_IPV4_DST, "ip_dst", "nw_dst", | |
364 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 365 | MFM_FULLY, |
6a885fd0 BP |
366 | MFS_IPV4, |
367 | MFP_IPV4, | |
28da1f8f BP |
368 | true, |
369 | NXM_OF_IP_DST, "NXM_OF_IP_DST", | |
36f3999b | 370 | OXM_OF_IPV4_DST, "OXM_OF_IPV4_DST", |
db0b6c29 JR |
371 | OFPUTIL_P_ANY, |
372 | OFPUTIL_P_NXM_OF11_UP, | |
6a885fd0 BP |
373 | }, |
374 | ||
375 | { | |
376 | MFF_IPV6_SRC, "ipv6_src", NULL, | |
377 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 378 | MFM_FULLY, |
6a885fd0 BP |
379 | MFS_IPV6, |
380 | MFP_IPV6, | |
28da1f8f BP |
381 | true, |
382 | NXM_NX_IPV6_SRC, "NXM_NX_IPV6_SRC", | |
36f3999b | 383 | OXM_OF_IPV6_SRC, "OXM_OF_IPV6_SRC", |
db0b6c29 JR |
384 | OFPUTIL_P_NXM_OXM_ANY, |
385 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
386 | }, { |
387 | MFF_IPV6_DST, "ipv6_dst", NULL, | |
388 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 389 | MFM_FULLY, |
6a885fd0 BP |
390 | MFS_IPV6, |
391 | MFP_IPV6, | |
28da1f8f BP |
392 | true, |
393 | NXM_NX_IPV6_DST, "NXM_NX_IPV6_DST", | |
36f3999b | 394 | OXM_OF_IPV6_DST, "OXM_OF_IPV6_DST", |
db0b6c29 JR |
395 | OFPUTIL_P_NXM_OXM_ANY, |
396 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 | 397 | }, |
fa8223b7 JP |
398 | { |
399 | MFF_IPV6_LABEL, "ipv6_label", NULL, | |
400 | 4, 20, | |
0bdc4bec | 401 | MFM_FULLY, |
fa8223b7 JP |
402 | MFS_HEXADECIMAL, |
403 | MFP_IPV6, | |
28da1f8f BP |
404 | false, |
405 | NXM_NX_IPV6_LABEL, "NXM_NX_IPV6_LABEL", | |
36f3999b | 406 | OXM_OF_IPV6_FLABEL, "OXM_OF_IPV6_FLABEL", |
db0b6c29 JR |
407 | OFPUTIL_P_NXM_OXM_ANY, |
408 | OFPUTIL_P_NXM_OXM_ANY, | |
fa8223b7 | 409 | }, |
6a885fd0 BP |
410 | |
411 | { | |
412 | MFF_IP_PROTO, "nw_proto", NULL, | |
413 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 414 | MFM_NONE, |
6a885fd0 BP |
415 | MFS_DECIMAL, |
416 | MFP_IP_ANY, | |
28da1f8f BP |
417 | false, |
418 | NXM_OF_IP_PROTO, "NXM_OF_IP_PROTO", | |
36f3999b | 419 | OXM_OF_IP_PROTO, "OXM_OF_IP_PROTO", |
db0b6c29 JR |
420 | OFPUTIL_P_ANY, |
421 | OFPUTIL_P_NONE, | |
6a885fd0 | 422 | }, { |
530180fd | 423 | MFF_IP_DSCP, "nw_tos", NULL, |
6a885fd0 | 424 | MF_FIELD_SIZES(u8), |
0bdc4bec | 425 | MFM_NONE, |
6a885fd0 BP |
426 | MFS_DECIMAL, |
427 | MFP_IP_ANY, | |
28da1f8f | 428 | true, |
36f3999b | 429 | NXM_OF_IP_TOS, "NXM_OF_IP_TOS", |
1638b906 | 430 | NXM_OF_IP_TOS, "NXM_OF_IP_TOS", |
db0b6c29 JR |
431 | OFPUTIL_P_ANY, /* Will be shifted for OXM. */ |
432 | OFPUTIL_P_NONE, | |
1638b906 BP |
433 | }, { |
434 | MFF_IP_DSCP_SHIFTED, "nw_tos_shifted", NULL, | |
435 | MF_FIELD_SIZES(u8), | |
436 | MFM_NONE, | |
437 | MFS_DECIMAL, | |
438 | MFP_IP_ANY, | |
439 | true, | |
440 | OXM_OF_IP_DSCP, "OXM_OF_IP_DSCP", | |
36f3999b | 441 | OXM_OF_IP_DSCP, "OXM_OF_IP_DSCP", |
db0b6c29 JR |
442 | OFPUTIL_P_ANY, /* Will be shifted for non-OXM. */ |
443 | OFPUTIL_P_NONE, | |
530180fd JP |
444 | }, { |
445 | MFF_IP_ECN, "nw_ecn", NULL, | |
446 | 1, 2, | |
0bdc4bec | 447 | MFM_NONE, |
530180fd JP |
448 | MFS_DECIMAL, |
449 | MFP_IP_ANY, | |
28da1f8f BP |
450 | true, |
451 | NXM_NX_IP_ECN, "NXM_NX_IP_ECN", | |
36f3999b | 452 | OXM_OF_IP_ECN, "OXM_OF_IP_ECN", |
db0b6c29 JR |
453 | OFPUTIL_P_NXM_OXM_ANY, |
454 | OFPUTIL_P_NONE, | |
a61680c6 JP |
455 | }, { |
456 | MFF_IP_TTL, "nw_ttl", NULL, | |
457 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 458 | MFM_NONE, |
a61680c6 JP |
459 | MFS_DECIMAL, |
460 | MFP_IP_ANY, | |
28da1f8f | 461 | true, |
36f3999b | 462 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
b5e5143b | 463 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
db0b6c29 JR |
464 | OFPUTIL_P_NXM_OXM_ANY, |
465 | OFPUTIL_P_NONE, | |
7257b535 BP |
466 | }, { |
467 | MFF_IP_FRAG, "ip_frag", NULL, | |
468 | 1, 2, | |
0bdc4bec | 469 | MFM_FULLY, |
7257b535 BP |
470 | MFS_FRAG, |
471 | MFP_IP_ANY, | |
28da1f8f | 472 | false, |
36f3999b | 473 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
b5e5143b | 474 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
db0b6c29 JR |
475 | OFPUTIL_P_NXM_OXM_ANY, |
476 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
477 | }, |
478 | ||
479 | { | |
480 | MFF_ARP_OP, "arp_op", NULL, | |
481 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 482 | MFM_NONE, |
6a885fd0 BP |
483 | MFS_DECIMAL, |
484 | MFP_ARP, | |
28da1f8f BP |
485 | false, |
486 | NXM_OF_ARP_OP, "NXM_OF_ARP_OP", | |
36f3999b | 487 | OXM_OF_ARP_OP, "OXM_OF_ARP_OP", |
db0b6c29 JR |
488 | OFPUTIL_P_ANY, |
489 | OFPUTIL_P_NONE, | |
6a885fd0 BP |
490 | }, { |
491 | MFF_ARP_SPA, "arp_spa", NULL, | |
492 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 493 | MFM_FULLY, |
6a885fd0 BP |
494 | MFS_IPV4, |
495 | MFP_ARP, | |
28da1f8f BP |
496 | false, |
497 | NXM_OF_ARP_SPA, "NXM_OF_ARP_SPA", | |
36f3999b | 498 | OXM_OF_ARP_SPA, "OXM_OF_ARP_SPA", |
db0b6c29 JR |
499 | OFPUTIL_P_ANY, |
500 | OFPUTIL_P_NXM_OF11_UP, | |
6a885fd0 BP |
501 | }, { |
502 | MFF_ARP_TPA, "arp_tpa", NULL, | |
503 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 504 | MFM_FULLY, |
6a885fd0 BP |
505 | MFS_IPV4, |
506 | MFP_ARP, | |
28da1f8f BP |
507 | false, |
508 | NXM_OF_ARP_TPA, "NXM_OF_ARP_TPA", | |
36f3999b | 509 | OXM_OF_ARP_TPA, "OXM_OF_ARP_TPA", |
db0b6c29 JR |
510 | OFPUTIL_P_ANY, |
511 | OFPUTIL_P_NXM_OF11_UP, | |
6a885fd0 BP |
512 | }, { |
513 | MFF_ARP_SHA, "arp_sha", NULL, | |
514 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 515 | MFM_FULLY, |
6a885fd0 BP |
516 | MFS_ETHERNET, |
517 | MFP_ARP, | |
28da1f8f BP |
518 | false, |
519 | NXM_NX_ARP_SHA, "NXM_NX_ARP_SHA", | |
36f3999b | 520 | OXM_OF_ARP_SHA, "OXM_OF_ARP_SHA", |
db0b6c29 JR |
521 | OFPUTIL_P_NXM_OXM_ANY, |
522 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
523 | }, { |
524 | MFF_ARP_THA, "arp_tha", NULL, | |
525 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 526 | MFM_FULLY, |
6a885fd0 BP |
527 | MFS_ETHERNET, |
528 | MFP_ARP, | |
28da1f8f BP |
529 | false, |
530 | NXM_NX_ARP_THA, "NXM_NX_ARP_THA", | |
36f3999b | 531 | OXM_OF_ARP_THA, "OXM_OF_ARP_THA", |
db0b6c29 JR |
532 | OFPUTIL_P_NXM_OXM_ANY, |
533 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
534 | }, |
535 | ||
536 | /* ## -- ## */ | |
537 | /* ## L4 ## */ | |
538 | /* ## -- ## */ | |
539 | ||
540 | { | |
541 | MFF_TCP_SRC, "tcp_src", "tp_src", | |
542 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 543 | MFM_FULLY, |
6a885fd0 BP |
544 | MFS_DECIMAL, |
545 | MFP_TCP, | |
28da1f8f BP |
546 | true, |
547 | NXM_OF_TCP_SRC, "NXM_OF_TCP_SRC", | |
36f3999b | 548 | OXM_OF_TCP_SRC, "OXM_OF_TCP_SRC", |
db0b6c29 JR |
549 | OFPUTIL_P_ANY, |
550 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
551 | }, { |
552 | MFF_TCP_DST, "tcp_dst", "tp_dst", | |
553 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 554 | MFM_FULLY, |
6a885fd0 BP |
555 | MFS_DECIMAL, |
556 | MFP_TCP, | |
28da1f8f BP |
557 | true, |
558 | NXM_OF_TCP_DST, "NXM_OF_TCP_DST", | |
36f3999b | 559 | OXM_OF_TCP_DST, "OXM_OF_TCP_DST", |
db0b6c29 JR |
560 | OFPUTIL_P_ANY, |
561 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
562 | }, |
563 | ||
564 | { | |
565 | MFF_UDP_SRC, "udp_src", NULL, | |
566 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 567 | MFM_FULLY, |
6a885fd0 BP |
568 | MFS_DECIMAL, |
569 | MFP_UDP, | |
28da1f8f BP |
570 | true, |
571 | NXM_OF_UDP_SRC, "NXM_OF_UDP_SRC", | |
36f3999b | 572 | OXM_OF_UDP_SRC, "OXM_OF_UDP_SRC", |
db0b6c29 JR |
573 | OFPUTIL_P_ANY, |
574 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
575 | }, { |
576 | MFF_UDP_DST, "udp_dst", NULL, | |
577 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 578 | MFM_FULLY, |
6a885fd0 BP |
579 | MFS_DECIMAL, |
580 | MFP_UDP, | |
28da1f8f BP |
581 | true, |
582 | NXM_OF_UDP_DST, "NXM_OF_UDP_DST", | |
36f3999b | 583 | OXM_OF_UDP_DST, "OXM_OF_UDP_DST", |
db0b6c29 JR |
584 | OFPUTIL_P_ANY, |
585 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
586 | }, |
587 | ||
0d56eaf2 JS |
588 | { |
589 | MFF_SCTP_SRC, "sctp_src", NULL, | |
590 | MF_FIELD_SIZES(be16), | |
591 | MFM_FULLY, | |
592 | MFS_DECIMAL, | |
593 | MFP_SCTP, | |
594 | true, | |
595 | OXM_OF_SCTP_SRC, "OXM_OF_SCTP_SRC", | |
596 | OXM_OF_SCTP_SRC, "OXM_OF_SCTP_SRC", | |
db0b6c29 JR |
597 | OFPUTIL_P_NXM_OF11_UP, |
598 | OFPUTIL_P_NXM_OXM_ANY, | |
0d56eaf2 JS |
599 | }, { |
600 | MFF_SCTP_DST, "sctp_dst", NULL, | |
601 | MF_FIELD_SIZES(be16), | |
602 | MFM_FULLY, | |
603 | MFS_DECIMAL, | |
604 | MFP_SCTP, | |
605 | true, | |
606 | OXM_OF_SCTP_DST, "OXM_OF_SCTP_DST", | |
607 | OXM_OF_SCTP_DST, "OXM_OF_SCTP_DST", | |
db0b6c29 JR |
608 | OFPUTIL_P_NXM_OF11_UP, |
609 | OFPUTIL_P_NXM_OXM_ANY, | |
0d56eaf2 JS |
610 | }, |
611 | ||
6a885fd0 | 612 | { |
268a95e0 | 613 | MFF_ICMPV4_TYPE, "icmp_type", NULL, |
6a885fd0 | 614 | MF_FIELD_SIZES(u8), |
0bdc4bec | 615 | MFM_NONE, |
6a885fd0 | 616 | MFS_DECIMAL, |
268a95e0 | 617 | MFP_ICMPV4, |
28da1f8f BP |
618 | false, |
619 | NXM_OF_ICMP_TYPE, "NXM_OF_ICMP_TYPE", | |
36f3999b | 620 | OXM_OF_ICMPV4_TYPE, "OXM_OF_ICMPV4_TYPE", |
db0b6c29 JR |
621 | OFPUTIL_P_ANY, |
622 | OFPUTIL_P_NONE, | |
6a885fd0 | 623 | }, { |
268a95e0 | 624 | MFF_ICMPV4_CODE, "icmp_code", NULL, |
6a885fd0 | 625 | MF_FIELD_SIZES(u8), |
0bdc4bec | 626 | MFM_NONE, |
6a885fd0 | 627 | MFS_DECIMAL, |
268a95e0 | 628 | MFP_ICMPV4, |
28da1f8f BP |
629 | false, |
630 | NXM_OF_ICMP_CODE, "NXM_OF_ICMP_CODE", | |
36f3999b | 631 | OXM_OF_ICMPV4_CODE, "OXM_OF_ICMPV4_CODE", |
db0b6c29 JR |
632 | OFPUTIL_P_ANY, |
633 | OFPUTIL_P_NONE, | |
28da1f8f BP |
634 | }, |
635 | ||
636 | { | |
268a95e0 BP |
637 | MFF_ICMPV6_TYPE, "icmpv6_type", NULL, |
638 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 639 | MFM_NONE, |
268a95e0 BP |
640 | MFS_DECIMAL, |
641 | MFP_ICMPV6, | |
28da1f8f BP |
642 | false, |
643 | NXM_NX_ICMPV6_TYPE, "NXM_NX_ICMPV6_TYPE", | |
36f3999b | 644 | OXM_OF_ICMPV6_TYPE, "OXM_OF_ICMPV6_TYPE", |
db0b6c29 JR |
645 | OFPUTIL_P_NXM_OXM_ANY, |
646 | OFPUTIL_P_NONE, | |
268a95e0 BP |
647 | }, { |
648 | MFF_ICMPV6_CODE, "icmpv6_code", NULL, | |
649 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 650 | MFM_NONE, |
268a95e0 BP |
651 | MFS_DECIMAL, |
652 | MFP_ICMPV6, | |
28da1f8f BP |
653 | false, |
654 | NXM_NX_ICMPV6_CODE, "NXM_NX_ICMPV6_CODE", | |
36f3999b | 655 | OXM_OF_ICMPV6_CODE, "OXM_OF_ICMPV6_CODE", |
db0b6c29 JR |
656 | OFPUTIL_P_NXM_OXM_ANY, |
657 | OFPUTIL_P_NONE, | |
6a885fd0 BP |
658 | }, |
659 | ||
660 | /* ## ---- ## */ | |
661 | /* ## L"5" ## */ | |
662 | /* ## ---- ## */ | |
663 | ||
664 | { | |
665 | MFF_ND_TARGET, "nd_target", NULL, | |
666 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 667 | MFM_FULLY, |
6a885fd0 BP |
668 | MFS_IPV6, |
669 | MFP_ND, | |
28da1f8f BP |
670 | false, |
671 | NXM_NX_ND_TARGET, "NXM_NX_ND_TARGET", | |
36f3999b | 672 | OXM_OF_IPV6_ND_TARGET, "OXM_OF_IPV6_ND_TARGET", |
db0b6c29 JR |
673 | OFPUTIL_P_NXM_OXM_ANY, |
674 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
675 | }, { |
676 | MFF_ND_SLL, "nd_sll", NULL, | |
677 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 678 | MFM_FULLY, |
6a885fd0 BP |
679 | MFS_ETHERNET, |
680 | MFP_ND_SOLICIT, | |
28da1f8f BP |
681 | false, |
682 | NXM_NX_ND_SLL, "NXM_NX_ND_SLL", | |
36f3999b | 683 | OXM_OF_IPV6_ND_SLL, "OXM_OF_IPV6_ND_SLL", |
db0b6c29 JR |
684 | OFPUTIL_P_NXM_OXM_ANY, |
685 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
686 | }, { |
687 | MFF_ND_TLL, "nd_tll", NULL, | |
688 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 689 | MFM_FULLY, |
6a885fd0 BP |
690 | MFS_ETHERNET, |
691 | MFP_ND_ADVERT, | |
28da1f8f BP |
692 | false, |
693 | NXM_NX_ND_TLL, "NXM_NX_ND_TLL", | |
36f3999b | 694 | OXM_OF_IPV6_ND_TLL, "OXM_OF_IPV6_ND_TLL", |
db0b6c29 JR |
695 | OFPUTIL_P_NXM_OXM_ANY, |
696 | OFPUTIL_P_NXM_OXM_ANY, | |
6a885fd0 BP |
697 | } |
698 | }; | |
699 | ||
b5e5143b | 700 | /* Maps an NXM or OXM header value to an mf_field. */ |
28da1f8f | 701 | struct nxm_field { |
b5e5143b BP |
702 | struct hmap_node hmap_node; /* In 'all_fields' hmap. */ |
703 | uint32_t header; /* NXM or OXM header value. */ | |
28da1f8f BP |
704 | const struct mf_field *mf; |
705 | }; | |
706 | ||
b5e5143b | 707 | /* Contains 'struct nxm_field's. */ |
4663f9e0 BP |
708 | static struct hmap all_fields; |
709 | ||
710 | /* Maps from an mf_field's 'name' or 'extra_name' to the mf_field. */ | |
711 | static struct shash mf_by_name; | |
28da1f8f | 712 | |
816fd533 BP |
713 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
714 | * controller and so there's not much point in showing a lot of them. */ | |
715 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
716 | ||
b5e5143b | 717 | const struct mf_field *mf_from_nxm_header__(uint32_t header); |
4663f9e0 | 718 | static void nxm_init(void); |
b5e5143b | 719 | |
6a885fd0 BP |
720 | /* Returns the field with the given 'id'. */ |
721 | const struct mf_field * | |
722 | mf_from_id(enum mf_field_id id) | |
723 | { | |
cb22974d | 724 | ovs_assert((unsigned int) id < MFF_N_IDS); |
6a885fd0 BP |
725 | return &mf_fields[id]; |
726 | } | |
727 | ||
728 | /* Returns the field with the given 'name', or a null pointer if no field has | |
729 | * that name. */ | |
730 | const struct mf_field * | |
731 | mf_from_name(const char *name) | |
732 | { | |
4663f9e0 | 733 | nxm_init(); |
6a885fd0 BP |
734 | return shash_find_data(&mf_by_name, name); |
735 | } | |
736 | ||
28da1f8f | 737 | static void |
b5e5143b | 738 | add_nxm_field(uint32_t header, const struct mf_field *mf) |
28da1f8f BP |
739 | { |
740 | struct nxm_field *f; | |
741 | ||
742 | f = xmalloc(sizeof *f); | |
b5e5143b BP |
743 | hmap_insert(&all_fields, &f->hmap_node, hash_int(header, 0)); |
744 | f->header = header; | |
28da1f8f BP |
745 | f->mf = mf; |
746 | } | |
747 | ||
b5ae8913 SH |
748 | static void |
749 | nxm_init_add_field(const struct mf_field *mf, uint32_t header) | |
750 | { | |
b5e5143b | 751 | if (header) { |
cb22974d | 752 | ovs_assert(!mf_from_nxm_header__(header)); |
b5e5143b BP |
753 | add_nxm_field(header, mf); |
754 | if (mf->maskable != MFM_NONE) { | |
755 | add_nxm_field(NXM_MAKE_WILD_HEADER(header), mf); | |
756 | } | |
b5ae8913 | 757 | } |
b5ae8913 | 758 | } |
b5ae8913 | 759 | |
28da1f8f | 760 | static void |
4663f9e0 | 761 | nxm_do_init(void) |
28da1f8f BP |
762 | { |
763 | const struct mf_field *mf; | |
764 | ||
4663f9e0 BP |
765 | hmap_init(&all_fields); |
766 | shash_init(&mf_by_name); | |
28da1f8f | 767 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { |
b5ae8913 | 768 | nxm_init_add_field(mf, mf->nxm_header); |
b5e5143b BP |
769 | if (mf->oxm_header != mf->nxm_header) { |
770 | nxm_init_add_field(mf, mf->oxm_header); | |
771 | } | |
4663f9e0 BP |
772 | |
773 | shash_add_once(&mf_by_name, mf->name, mf); | |
774 | if (mf->extra_name) { | |
775 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
776 | } | |
28da1f8f | 777 | } |
28da1f8f BP |
778 | } |
779 | ||
4663f9e0 BP |
780 | static void |
781 | nxm_init(void) | |
782 | { | |
783 | static pthread_once_t once = PTHREAD_ONCE_INIT; | |
784 | pthread_once(&once, nxm_do_init); | |
785 | } | |
786 | ||
28da1f8f BP |
787 | const struct mf_field * |
788 | mf_from_nxm_header(uint32_t header) | |
789 | { | |
4663f9e0 | 790 | nxm_init(); |
b5e5143b BP |
791 | return mf_from_nxm_header__(header); |
792 | } | |
28da1f8f | 793 | |
b5e5143b BP |
794 | const struct mf_field * |
795 | mf_from_nxm_header__(uint32_t header) | |
796 | { | |
797 | const struct nxm_field *f; | |
798 | ||
799 | HMAP_FOR_EACH_IN_BUCKET (f, hmap_node, hash_int(header, 0), &all_fields) { | |
800 | if (f->header == header) { | |
28da1f8f BP |
801 | return f->mf; |
802 | } | |
803 | } | |
804 | ||
805 | return NULL; | |
806 | } | |
807 | ||
6a885fd0 BP |
808 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
809 | * specifies at least one bit in the field. | |
810 | * | |
811 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
812 | * meets 'mf''s prerequisites. */ | |
813 | bool | |
814 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
815 | { | |
816 | switch (mf->id) { | |
4fe3445a | 817 | case MFF_TUN_SRC: |
0ad90c84 | 818 | return !wc->masks.tunnel.ip_src; |
4fe3445a | 819 | case MFF_TUN_DST: |
0ad90c84 JR |
820 | return !wc->masks.tunnel.ip_dst; |
821 | case MFF_TUN_ID: | |
4fe3445a PS |
822 | case MFF_TUN_TOS: |
823 | case MFF_TUN_TTL: | |
824 | case MFF_TUN_FLAGS: | |
296e07ac | 825 | return !wc->masks.tunnel.tun_id; |
969fc56c | 826 | case MFF_METADATA: |
26720e24 | 827 | return !wc->masks.metadata; |
0bdc4bec | 828 | case MFF_IN_PORT: |
72333065 | 829 | case MFF_IN_PORT_OXM: |
4e022ec0 | 830 | return !wc->masks.in_port.ofp_port; |
1b567fb9 AA |
831 | case MFF_SKB_PRIORITY: |
832 | return !wc->masks.skb_priority; | |
1362e248 JG |
833 | case MFF_PKT_MARK: |
834 | return !wc->masks.pkt_mark; | |
0d7e2fe4 | 835 | CASE_MFF_REGS: |
26720e24 | 836 | return !wc->masks.regs[mf->id - MFF_REG0]; |
6a885fd0 | 837 | |
73c0ce34 | 838 | case MFF_ETH_SRC: |
26720e24 | 839 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 840 | case MFF_ETH_DST: |
26720e24 | 841 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 842 | case MFF_ETH_TYPE: |
26720e24 | 843 | return !wc->masks.dl_type; |
6a885fd0 | 844 | |
e878338b SH |
845 | case MFF_ARP_SHA: |
846 | case MFF_ND_SLL: | |
26720e24 | 847 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
848 | |
849 | case MFF_ARP_THA: | |
850 | case MFF_ND_TLL: | |
26720e24 | 851 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 852 | |
6a885fd0 | 853 | case MFF_VLAN_TCI: |
26720e24 | 854 | return !wc->masks.vlan_tci; |
441c57a9 | 855 | case MFF_DL_VLAN: |
26720e24 | 856 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 857 | case MFF_VLAN_VID: |
26720e24 | 858 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 859 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 860 | case MFF_VLAN_PCP: |
26720e24 | 861 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 | 862 | |
b02475c5 SH |
863 | case MFF_MPLS_LABEL: |
864 | return !(wc->masks.mpls_lse & htonl(MPLS_LABEL_MASK)); | |
865 | case MFF_MPLS_TC: | |
866 | return !(wc->masks.mpls_lse & htonl(MPLS_TC_MASK)); | |
867 | case MFF_MPLS_BOS: | |
868 | return !(wc->masks.mpls_lse & htonl(MPLS_BOS_MASK)); | |
869 | ||
6a885fd0 | 870 | case MFF_IPV4_SRC: |
26720e24 | 871 | return !wc->masks.nw_src; |
6a885fd0 | 872 | case MFF_IPV4_DST: |
26720e24 | 873 | return !wc->masks.nw_dst; |
6a885fd0 BP |
874 | |
875 | case MFF_IPV6_SRC: | |
26720e24 | 876 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 877 | case MFF_IPV6_DST: |
26720e24 | 878 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 879 | |
32455024 | 880 | case MFF_IPV6_LABEL: |
26720e24 | 881 | return !wc->masks.ipv6_label; |
32455024 | 882 | |
851d3105 | 883 | case MFF_IP_PROTO: |
26720e24 | 884 | return !wc->masks.nw_proto; |
5d9499c4 | 885 | case MFF_IP_DSCP: |
1638b906 | 886 | case MFF_IP_DSCP_SHIFTED: |
26720e24 | 887 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 888 | case MFF_IP_ECN: |
26720e24 | 889 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 890 | case MFF_IP_TTL: |
26720e24 | 891 | return !wc->masks.nw_ttl; |
5d9499c4 | 892 | |
47284b1f | 893 | case MFF_ND_TARGET: |
26720e24 | 894 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 895 | |
7257b535 | 896 | case MFF_IP_FRAG: |
26720e24 | 897 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 898 | |
851d3105 | 899 | case MFF_ARP_OP: |
26720e24 | 900 | return !wc->masks.nw_proto; |
6a885fd0 | 901 | case MFF_ARP_SPA: |
26720e24 | 902 | return !wc->masks.nw_src; |
6a885fd0 | 903 | case MFF_ARP_TPA: |
26720e24 | 904 | return !wc->masks.nw_dst; |
6a885fd0 | 905 | |
73f33563 BP |
906 | case MFF_TCP_SRC: |
907 | case MFF_UDP_SRC: | |
0d56eaf2 | 908 | case MFF_SCTP_SRC: |
73f33563 BP |
909 | case MFF_ICMPV4_TYPE: |
910 | case MFF_ICMPV6_TYPE: | |
26720e24 | 911 | return !wc->masks.tp_src; |
73f33563 BP |
912 | case MFF_TCP_DST: |
913 | case MFF_UDP_DST: | |
0d56eaf2 | 914 | case MFF_SCTP_DST: |
73f33563 BP |
915 | case MFF_ICMPV4_CODE: |
916 | case MFF_ICMPV6_CODE: | |
26720e24 | 917 | return !wc->masks.tp_dst; |
73f33563 | 918 | |
6a885fd0 BP |
919 | case MFF_N_IDS: |
920 | default: | |
921 | NOT_REACHED(); | |
922 | } | |
923 | } | |
924 | ||
925 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
926 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
927 | * purposes, or to 0 if it is wildcarded. | |
928 | * | |
929 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
930 | * meets 'mf''s prerequisites. */ | |
931 | void | |
932 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
933 | union mf_value *mask) | |
934 | { | |
fb15feb0 | 935 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
936 | } |
937 | ||
938 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
939 | * if the mask is valid, false otherwise. */ | |
940 | bool | |
941 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
942 | { | |
943 | switch (mf->maskable) { | |
944 | case MFM_NONE: | |
945 | return (is_all_zeros((const uint8_t *) mask, mf->n_bytes) || | |
946 | is_all_ones((const uint8_t *) mask, mf->n_bytes)); | |
947 | ||
948 | case MFM_FULLY: | |
949 | return true; | |
6a885fd0 BP |
950 | } |
951 | ||
952 | NOT_REACHED(); | |
953 | } | |
954 | ||
6a885fd0 BP |
955 | static bool |
956 | is_icmpv4(const struct flow *flow) | |
957 | { | |
958 | return (flow->dl_type == htons(ETH_TYPE_IP) | |
959 | && flow->nw_proto == IPPROTO_ICMP); | |
960 | } | |
961 | ||
962 | static bool | |
963 | is_icmpv6(const struct flow *flow) | |
964 | { | |
965 | return (flow->dl_type == htons(ETH_TYPE_IPV6) | |
966 | && flow->nw_proto == IPPROTO_ICMPV6); | |
967 | } | |
968 | ||
969 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ | |
970 | bool | |
971 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
972 | { | |
973 | switch (mf->prereqs) { | |
974 | case MFP_NONE: | |
975 | return true; | |
976 | ||
977 | case MFP_ARP: | |
8087f5ff MM |
978 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
979 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
980 | case MFP_IPV4: |
981 | return flow->dl_type == htons(ETH_TYPE_IP); | |
982 | case MFP_IPV6: | |
983 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 984 | case MFP_VLAN_VID: |
5921e99a | 985 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
b02475c5 SH |
986 | case MFP_MPLS: |
987 | return eth_type_mpls(flow->dl_type); | |
6a885fd0 BP |
988 | case MFP_IP_ANY: |
989 | return is_ip_any(flow); | |
990 | ||
991 | case MFP_TCP: | |
992 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP; | |
993 | case MFP_UDP: | |
994 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP; | |
0d56eaf2 JS |
995 | case MFP_SCTP: |
996 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_SCTP; | |
268a95e0 BP |
997 | case MFP_ICMPV4: |
998 | return is_icmpv4(flow); | |
6a885fd0 BP |
999 | case MFP_ICMPV6: |
1000 | return is_icmpv6(flow); | |
6a885fd0 BP |
1001 | |
1002 | case MFP_ND: | |
1003 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
1004 | && flow->tp_dst == htons(0) |
1005 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
1006 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
1007 | case MFP_ND_SOLICIT: |
1008 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
1009 | && flow->tp_dst == htons(0) |
1010 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
1011 | case MFP_ND_ADVERT: |
1012 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
1013 | && flow->tp_dst == htons(0) |
1014 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
1015 | } |
1016 | ||
1017 | NOT_REACHED(); | |
1018 | } | |
1019 | ||
1020 | /* Returns true if 'value' may be a valid value *as part of a masked match*, | |
1021 | * false otherwise. | |
1022 | * | |
1023 | * A value is not rejected just because it is not valid for the field in | |
1024 | * question, but only if it doesn't make sense to test the bits in question at | |
1025 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
1026 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
1027 | * it is still legitimate to test just for those bits (see the documentation | |
1028 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 1029 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
1030 | bool |
1031 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
1032 | { | |
1033 | switch (mf->id) { | |
1034 | case MFF_TUN_ID: | |
4fe3445a PS |
1035 | case MFF_TUN_SRC: |
1036 | case MFF_TUN_DST: | |
1037 | case MFF_TUN_TOS: | |
1038 | case MFF_TUN_TTL: | |
1039 | case MFF_TUN_FLAGS: | |
969fc56c | 1040 | case MFF_METADATA: |
6a885fd0 | 1041 | case MFF_IN_PORT: |
1b567fb9 | 1042 | case MFF_SKB_PRIORITY: |
1362e248 | 1043 | case MFF_PKT_MARK: |
0d7e2fe4 | 1044 | CASE_MFF_REGS: |
6a885fd0 BP |
1045 | case MFF_ETH_SRC: |
1046 | case MFF_ETH_DST: | |
1047 | case MFF_ETH_TYPE: | |
1048 | case MFF_VLAN_TCI: | |
1049 | case MFF_IPV4_SRC: | |
1050 | case MFF_IPV4_DST: | |
1051 | case MFF_IPV6_SRC: | |
1052 | case MFF_IPV6_DST: | |
1053 | case MFF_IP_PROTO: | |
a61680c6 | 1054 | case MFF_IP_TTL: |
6a885fd0 BP |
1055 | case MFF_ARP_SPA: |
1056 | case MFF_ARP_TPA: | |
1057 | case MFF_ARP_SHA: | |
1058 | case MFF_ARP_THA: | |
1059 | case MFF_TCP_SRC: | |
1060 | case MFF_TCP_DST: | |
1061 | case MFF_UDP_SRC: | |
1062 | case MFF_UDP_DST: | |
0d56eaf2 JS |
1063 | case MFF_SCTP_SRC: |
1064 | case MFF_SCTP_DST: | |
268a95e0 BP |
1065 | case MFF_ICMPV4_TYPE: |
1066 | case MFF_ICMPV4_CODE: | |
1067 | case MFF_ICMPV6_TYPE: | |
1068 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1069 | case MFF_ND_TARGET: |
1070 | case MFF_ND_SLL: | |
1071 | case MFF_ND_TLL: | |
1072 | return true; | |
1073 | ||
72333065 | 1074 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 1075 | ofp_port_t port; |
72333065 JR |
1076 | return !ofputil_port_from_ofp11(value->be32, &port); |
1077 | } | |
1078 | ||
530180fd | 1079 | case MFF_IP_DSCP: |
7257b535 | 1080 | return !(value->u8 & ~IP_DSCP_MASK); |
1638b906 BP |
1081 | case MFF_IP_DSCP_SHIFTED: |
1082 | return !(value->u8 & (~IP_DSCP_MASK >> 2)); | |
530180fd JP |
1083 | case MFF_IP_ECN: |
1084 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 1085 | case MFF_IP_FRAG: |
eadef313 | 1086 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
6a885fd0 BP |
1087 | |
1088 | case MFF_ARP_OP: | |
1089 | return !(value->be16 & htons(0xff00)); | |
1090 | ||
441c57a9 | 1091 | case MFF_DL_VLAN: |
6a885fd0 | 1092 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
1093 | case MFF_VLAN_VID: |
1094 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 1095 | |
441c57a9 | 1096 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1097 | case MFF_VLAN_PCP: |
24016f5a | 1098 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 1099 | |
fa8223b7 JP |
1100 | case MFF_IPV6_LABEL: |
1101 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
1102 | ||
b02475c5 SH |
1103 | case MFF_MPLS_LABEL: |
1104 | return !(value->be32 & ~htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT)); | |
1105 | ||
1106 | case MFF_MPLS_TC: | |
1107 | return !(value->u8 & ~(MPLS_TC_MASK >> MPLS_TC_SHIFT)); | |
1108 | ||
1109 | case MFF_MPLS_BOS: | |
1110 | return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT)); | |
1111 | ||
6a885fd0 BP |
1112 | case MFF_N_IDS: |
1113 | default: | |
1114 | NOT_REACHED(); | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
1119 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
1120 | void | |
1121 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
1122 | union mf_value *value) | |
1123 | { | |
1124 | switch (mf->id) { | |
1125 | case MFF_TUN_ID: | |
296e07ac | 1126 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 1127 | break; |
4fe3445a PS |
1128 | case MFF_TUN_SRC: |
1129 | value->be32 = flow->tunnel.ip_src; | |
1130 | break; | |
1131 | case MFF_TUN_DST: | |
1132 | value->be32 = flow->tunnel.ip_dst; | |
1133 | break; | |
1134 | case MFF_TUN_FLAGS: | |
1135 | value->be16 = htons(flow->tunnel.flags); | |
1136 | break; | |
1137 | case MFF_TUN_TTL: | |
1138 | value->u8 = flow->tunnel.ip_ttl; | |
1139 | break; | |
1140 | case MFF_TUN_TOS: | |
1141 | value->u8 = flow->tunnel.ip_tos; | |
1142 | break; | |
1143 | ||
969fc56c JS |
1144 | case MFF_METADATA: |
1145 | value->be64 = flow->metadata; | |
1146 | break; | |
6a885fd0 BP |
1147 | |
1148 | case MFF_IN_PORT: | |
4e022ec0 | 1149 | value->be16 = htons(ofp_to_u16(flow->in_port.ofp_port)); |
6a885fd0 | 1150 | break; |
72333065 | 1151 | case MFF_IN_PORT_OXM: |
4e022ec0 | 1152 | value->be32 = ofputil_port_to_ofp11(flow->in_port.ofp_port); |
72333065 JR |
1153 | break; |
1154 | ||
1b567fb9 | 1155 | case MFF_SKB_PRIORITY: |
a81f0a44 | 1156 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
1157 | break; |
1158 | ||
1362e248 JG |
1159 | case MFF_PKT_MARK: |
1160 | value->be32 = htonl(flow->pkt_mark); | |
1b567fb9 AA |
1161 | break; |
1162 | ||
0d7e2fe4 | 1163 | CASE_MFF_REGS: |
2f98b0b7 | 1164 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
1165 | break; |
1166 | ||
1167 | case MFF_ETH_SRC: | |
1168 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
1169 | break; | |
1170 | ||
1171 | case MFF_ETH_DST: | |
1172 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
1173 | break; | |
1174 | ||
1175 | case MFF_ETH_TYPE: | |
1176 | value->be16 = flow->dl_type; | |
1177 | break; | |
1178 | ||
1179 | case MFF_VLAN_TCI: | |
1180 | value->be16 = flow->vlan_tci; | |
1181 | break; | |
1182 | ||
441c57a9 | 1183 | case MFF_DL_VLAN: |
6a885fd0 BP |
1184 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
1185 | break; | |
cc34bc8c BP |
1186 | case MFF_VLAN_VID: |
1187 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
1188 | break; | |
6a885fd0 | 1189 | |
441c57a9 | 1190 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1191 | case MFF_VLAN_PCP: |
6a885fd0 BP |
1192 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
1193 | break; | |
1194 | ||
b02475c5 SH |
1195 | case MFF_MPLS_LABEL: |
1196 | value->be32 = htonl(mpls_lse_to_label(flow->mpls_lse)); | |
1197 | break; | |
1198 | ||
1199 | case MFF_MPLS_TC: | |
1200 | value->u8 = mpls_lse_to_tc(flow->mpls_lse); | |
1201 | break; | |
1202 | ||
1203 | case MFF_MPLS_BOS: | |
1204 | value->u8 = mpls_lse_to_bos(flow->mpls_lse); | |
1205 | break; | |
1206 | ||
6a885fd0 BP |
1207 | case MFF_IPV4_SRC: |
1208 | value->be32 = flow->nw_src; | |
1209 | break; | |
1210 | ||
1211 | case MFF_IPV4_DST: | |
1212 | value->be32 = flow->nw_dst; | |
1213 | break; | |
1214 | ||
1215 | case MFF_IPV6_SRC: | |
1216 | value->ipv6 = flow->ipv6_src; | |
1217 | break; | |
1218 | ||
1219 | case MFF_IPV6_DST: | |
1220 | value->ipv6 = flow->ipv6_dst; | |
1221 | break; | |
1222 | ||
fa8223b7 JP |
1223 | case MFF_IPV6_LABEL: |
1224 | value->be32 = flow->ipv6_label; | |
1225 | break; | |
1226 | ||
6a885fd0 BP |
1227 | case MFF_IP_PROTO: |
1228 | value->u8 = flow->nw_proto; | |
1229 | break; | |
1230 | ||
530180fd | 1231 | case MFF_IP_DSCP: |
eadef313 | 1232 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
1233 | break; |
1234 | ||
1638b906 BP |
1235 | case MFF_IP_DSCP_SHIFTED: |
1236 | value->u8 = flow->nw_tos >> 2; | |
1237 | break; | |
1238 | ||
530180fd | 1239 | case MFF_IP_ECN: |
eadef313 | 1240 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
1241 | break; |
1242 | ||
a61680c6 JP |
1243 | case MFF_IP_TTL: |
1244 | value->u8 = flow->nw_ttl; | |
1245 | break; | |
1246 | ||
7257b535 | 1247 | case MFF_IP_FRAG: |
eadef313 | 1248 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
1249 | break; |
1250 | ||
1251 | case MFF_ARP_OP: | |
1252 | value->be16 = htons(flow->nw_proto); | |
1253 | break; | |
1254 | ||
1255 | case MFF_ARP_SPA: | |
1256 | value->be32 = flow->nw_src; | |
1257 | break; | |
1258 | ||
1259 | case MFF_ARP_TPA: | |
1260 | value->be32 = flow->nw_dst; | |
1261 | break; | |
1262 | ||
1263 | case MFF_ARP_SHA: | |
1264 | case MFF_ND_SLL: | |
1265 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
1266 | break; | |
1267 | ||
1268 | case MFF_ARP_THA: | |
1269 | case MFF_ND_TLL: | |
1270 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
1271 | break; | |
1272 | ||
1273 | case MFF_TCP_SRC: | |
6a885fd0 | 1274 | case MFF_UDP_SRC: |
0d56eaf2 | 1275 | case MFF_SCTP_SRC: |
6a885fd0 BP |
1276 | value->be16 = flow->tp_src; |
1277 | break; | |
1278 | ||
71baec06 | 1279 | case MFF_TCP_DST: |
6a885fd0 | 1280 | case MFF_UDP_DST: |
0d56eaf2 | 1281 | case MFF_SCTP_DST: |
6a885fd0 BP |
1282 | value->be16 = flow->tp_dst; |
1283 | break; | |
1284 | ||
268a95e0 BP |
1285 | case MFF_ICMPV4_TYPE: |
1286 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
1287 | value->u8 = ntohs(flow->tp_src); |
1288 | break; | |
1289 | ||
268a95e0 BP |
1290 | case MFF_ICMPV4_CODE: |
1291 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1292 | value->u8 = ntohs(flow->tp_dst); |
1293 | break; | |
1294 | ||
1295 | case MFF_ND_TARGET: | |
1296 | value->ipv6 = flow->nd_target; | |
1297 | break; | |
1298 | ||
1299 | case MFF_N_IDS: | |
1300 | default: | |
1301 | NOT_REACHED(); | |
1302 | } | |
1303 | } | |
1304 | ||
81a76618 BP |
1305 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1306 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
1307 | * prerequisites. */ |
1308 | void | |
1309 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 1310 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
1311 | { |
1312 | switch (mf->id) { | |
1313 | case MFF_TUN_ID: | |
81a76618 | 1314 | match_set_tun_id(match, value->be64); |
6a885fd0 | 1315 | break; |
4fe3445a PS |
1316 | case MFF_TUN_SRC: |
1317 | match_set_tun_src(match, value->be32); | |
1318 | break; | |
1319 | case MFF_TUN_DST: | |
1320 | match_set_tun_dst(match, value->be32); | |
1321 | break; | |
1322 | case MFF_TUN_FLAGS: | |
1323 | match_set_tun_flags(match, ntohs(value->be16)); | |
1324 | break; | |
1325 | case MFF_TUN_TOS: | |
1326 | match_set_tun_tos(match, value->u8); | |
1327 | break; | |
1328 | case MFF_TUN_TTL: | |
1329 | match_set_tun_ttl(match, value->u8); | |
1330 | break; | |
1331 | ||
969fc56c | 1332 | case MFF_METADATA: |
81a76618 | 1333 | match_set_metadata(match, value->be64); |
969fc56c | 1334 | break; |
6a885fd0 BP |
1335 | |
1336 | case MFF_IN_PORT: | |
4e022ec0 | 1337 | match_set_in_port(match, u16_to_ofp(ntohs(value->be16))); |
6a885fd0 BP |
1338 | break; |
1339 | ||
72333065 | 1340 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 1341 | ofp_port_t port; |
bc146369 | 1342 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
1343 | match_set_in_port(match, port); |
1344 | break; | |
1345 | } | |
1346 | ||
1b567fb9 AA |
1347 | case MFF_SKB_PRIORITY: |
1348 | match_set_skb_priority(match, ntohl(value->be32)); | |
1349 | break; | |
1350 | ||
1362e248 JG |
1351 | case MFF_PKT_MARK: |
1352 | match_set_pkt_mark(match, ntohl(value->be32)); | |
1b567fb9 AA |
1353 | break; |
1354 | ||
0d7e2fe4 | 1355 | CASE_MFF_REGS: |
81a76618 | 1356 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 1357 | break; |
6a885fd0 BP |
1358 | |
1359 | case MFF_ETH_SRC: | |
81a76618 | 1360 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
1361 | break; |
1362 | ||
1363 | case MFF_ETH_DST: | |
81a76618 | 1364 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
1365 | break; |
1366 | ||
1367 | case MFF_ETH_TYPE: | |
81a76618 | 1368 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
1369 | break; |
1370 | ||
1371 | case MFF_VLAN_TCI: | |
81a76618 | 1372 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
1373 | break; |
1374 | ||
441c57a9 | 1375 | case MFF_DL_VLAN: |
81a76618 | 1376 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 1377 | break; |
cc34bc8c | 1378 | case MFF_VLAN_VID: |
81a76618 | 1379 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 1380 | break; |
6a885fd0 | 1381 | |
441c57a9 | 1382 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1383 | case MFF_VLAN_PCP: |
81a76618 | 1384 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
1385 | break; |
1386 | ||
b02475c5 SH |
1387 | case MFF_MPLS_LABEL: |
1388 | match_set_mpls_label(match, value->be32); | |
1389 | break; | |
1390 | ||
1391 | case MFF_MPLS_TC: | |
1392 | match_set_mpls_tc(match, value->u8); | |
1393 | break; | |
1394 | ||
1395 | case MFF_MPLS_BOS: | |
1396 | match_set_mpls_bos(match, value->u8); | |
1397 | break; | |
1398 | ||
6a885fd0 | 1399 | case MFF_IPV4_SRC: |
81a76618 | 1400 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1401 | break; |
1402 | ||
1403 | case MFF_IPV4_DST: | |
81a76618 | 1404 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1405 | break; |
1406 | ||
1407 | case MFF_IPV6_SRC: | |
81a76618 | 1408 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
1409 | break; |
1410 | ||
1411 | case MFF_IPV6_DST: | |
81a76618 | 1412 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
1413 | break; |
1414 | ||
fa8223b7 | 1415 | case MFF_IPV6_LABEL: |
81a76618 | 1416 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
1417 | break; |
1418 | ||
6a885fd0 | 1419 | case MFF_IP_PROTO: |
81a76618 | 1420 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
1421 | break; |
1422 | ||
530180fd | 1423 | case MFF_IP_DSCP: |
81a76618 | 1424 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
1425 | break; |
1426 | ||
1638b906 BP |
1427 | case MFF_IP_DSCP_SHIFTED: |
1428 | match_set_nw_dscp(match, value->u8 << 2); | |
1429 | break; | |
1430 | ||
530180fd | 1431 | case MFF_IP_ECN: |
81a76618 | 1432 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
1433 | break; |
1434 | ||
a61680c6 | 1435 | case MFF_IP_TTL: |
81a76618 | 1436 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
1437 | break; |
1438 | ||
7257b535 | 1439 | case MFF_IP_FRAG: |
81a76618 | 1440 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
1441 | break; |
1442 | ||
6a885fd0 | 1443 | case MFF_ARP_OP: |
81a76618 | 1444 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
1445 | break; |
1446 | ||
1447 | case MFF_ARP_SPA: | |
81a76618 | 1448 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1449 | break; |
1450 | ||
1451 | case MFF_ARP_TPA: | |
81a76618 | 1452 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1453 | break; |
1454 | ||
1455 | case MFF_ARP_SHA: | |
1456 | case MFF_ND_SLL: | |
81a76618 | 1457 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
1458 | break; |
1459 | ||
1460 | case MFF_ARP_THA: | |
1461 | case MFF_ND_TLL: | |
81a76618 | 1462 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
1463 | break; |
1464 | ||
1465 | case MFF_TCP_SRC: | |
6a885fd0 | 1466 | case MFF_UDP_SRC: |
0d56eaf2 | 1467 | case MFF_SCTP_SRC: |
81a76618 | 1468 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
1469 | break; |
1470 | ||
71baec06 | 1471 | case MFF_TCP_DST: |
6a885fd0 | 1472 | case MFF_UDP_DST: |
0d56eaf2 | 1473 | case MFF_SCTP_DST: |
81a76618 | 1474 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
1475 | break; |
1476 | ||
268a95e0 BP |
1477 | case MFF_ICMPV4_TYPE: |
1478 | case MFF_ICMPV6_TYPE: | |
81a76618 | 1479 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
1480 | break; |
1481 | ||
268a95e0 BP |
1482 | case MFF_ICMPV4_CODE: |
1483 | case MFF_ICMPV6_CODE: | |
81a76618 | 1484 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
1485 | break; |
1486 | ||
1487 | case MFF_ND_TARGET: | |
81a76618 | 1488 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
1489 | break; |
1490 | ||
1491 | case MFF_N_IDS: | |
1492 | default: | |
1493 | NOT_REACHED(); | |
1494 | } | |
1495 | } | |
1496 | ||
910fb1d8 JP |
1497 | /* Sets 'flow' member field described by 'mf' to 'value'. The caller is |
1498 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/ | |
28da1f8f BP |
1499 | void |
1500 | mf_set_flow_value(const struct mf_field *mf, | |
1501 | const union mf_value *value, struct flow *flow) | |
1502 | { | |
1503 | switch (mf->id) { | |
1504 | case MFF_TUN_ID: | |
296e07ac | 1505 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 1506 | break; |
4fe3445a PS |
1507 | case MFF_TUN_SRC: |
1508 | flow->tunnel.ip_src = value->be32; | |
1509 | break; | |
1510 | case MFF_TUN_DST: | |
1511 | flow->tunnel.ip_dst = value->be32; | |
1512 | break; | |
1513 | case MFF_TUN_FLAGS: | |
1514 | flow->tunnel.flags = ntohs(value->be16); | |
1515 | break; | |
1516 | case MFF_TUN_TOS: | |
1517 | flow->tunnel.ip_tos = value->u8; | |
1518 | break; | |
1519 | case MFF_TUN_TTL: | |
1520 | flow->tunnel.ip_ttl = value->u8; | |
1521 | break; | |
1522 | ||
969fc56c JS |
1523 | case MFF_METADATA: |
1524 | flow->metadata = value->be64; | |
1525 | break; | |
28da1f8f BP |
1526 | |
1527 | case MFF_IN_PORT: | |
4e022ec0 | 1528 | flow->in_port.ofp_port = u16_to_ofp(ntohs(value->be16)); |
28da1f8f BP |
1529 | break; |
1530 | ||
72333065 | 1531 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 1532 | ofp_port_t port; |
bc146369 | 1533 | ofputil_port_from_ofp11(value->be32, &port); |
4e022ec0 | 1534 | flow->in_port.ofp_port = port; |
72333065 JR |
1535 | break; |
1536 | } | |
1537 | ||
1b567fb9 AA |
1538 | case MFF_SKB_PRIORITY: |
1539 | flow->skb_priority = ntohl(value->be32); | |
1540 | break; | |
1541 | ||
1362e248 JG |
1542 | case MFF_PKT_MARK: |
1543 | flow->pkt_mark = ntohl(value->be32); | |
1b567fb9 AA |
1544 | break; |
1545 | ||
0d7e2fe4 | 1546 | CASE_MFF_REGS: |
28da1f8f BP |
1547 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
1548 | break; | |
28da1f8f BP |
1549 | |
1550 | case MFF_ETH_SRC: | |
1551 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
1552 | break; | |
1553 | ||
1554 | case MFF_ETH_DST: | |
b5a36e38 | 1555 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
1556 | break; |
1557 | ||
1558 | case MFF_ETH_TYPE: | |
1559 | flow->dl_type = value->be16; | |
1560 | break; | |
1561 | ||
1562 | case MFF_VLAN_TCI: | |
1563 | flow->vlan_tci = value->be16; | |
1564 | break; | |
1565 | ||
441c57a9 | 1566 | case MFF_DL_VLAN: |
fb0451d9 | 1567 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 1568 | break; |
cc34bc8c BP |
1569 | case MFF_VLAN_VID: |
1570 | flow_set_vlan_vid(flow, value->be16); | |
1571 | break; | |
28da1f8f | 1572 | |
441c57a9 | 1573 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1574 | case MFF_VLAN_PCP: |
28da1f8f BP |
1575 | flow_set_vlan_pcp(flow, value->u8); |
1576 | break; | |
1577 | ||
b02475c5 SH |
1578 | case MFF_MPLS_LABEL: |
1579 | flow_set_mpls_label(flow, value->be32); | |
1580 | break; | |
1581 | ||
1582 | case MFF_MPLS_TC: | |
1583 | flow_set_mpls_tc(flow, value->u8); | |
1584 | break; | |
1585 | ||
1586 | case MFF_MPLS_BOS: | |
1587 | flow_set_mpls_bos(flow, value->u8); | |
1588 | break; | |
1589 | ||
28da1f8f BP |
1590 | case MFF_IPV4_SRC: |
1591 | flow->nw_src = value->be32; | |
1592 | break; | |
1593 | ||
1594 | case MFF_IPV4_DST: | |
1595 | flow->nw_dst = value->be32; | |
1596 | break; | |
1597 | ||
1598 | case MFF_IPV6_SRC: | |
1599 | flow->ipv6_src = value->ipv6; | |
1600 | break; | |
1601 | ||
1602 | case MFF_IPV6_DST: | |
1603 | flow->ipv6_dst = value->ipv6; | |
1604 | break; | |
1605 | ||
1606 | case MFF_IPV6_LABEL: | |
1607 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1608 | break; | |
1609 | ||
1610 | case MFF_IP_PROTO: | |
1611 | flow->nw_proto = value->u8; | |
1612 | break; | |
1613 | ||
1614 | case MFF_IP_DSCP: | |
1615 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1616 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1617 | break; | |
1618 | ||
1638b906 BP |
1619 | case MFF_IP_DSCP_SHIFTED: |
1620 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1621 | flow->nw_tos |= value->u8 << 2; | |
1622 | break; | |
1623 | ||
28da1f8f BP |
1624 | case MFF_IP_ECN: |
1625 | flow->nw_tos &= ~IP_ECN_MASK; | |
1626 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1627 | break; | |
1628 | ||
1629 | case MFF_IP_TTL: | |
1630 | flow->nw_ttl = value->u8; | |
1631 | break; | |
1632 | ||
1633 | case MFF_IP_FRAG: | |
1634 | flow->nw_frag &= value->u8; | |
1635 | break; | |
1636 | ||
1637 | case MFF_ARP_OP: | |
1638 | flow->nw_proto = ntohs(value->be16); | |
1639 | break; | |
1640 | ||
1641 | case MFF_ARP_SPA: | |
1642 | flow->nw_src = value->be32; | |
1643 | break; | |
1644 | ||
1645 | case MFF_ARP_TPA: | |
1646 | flow->nw_dst = value->be32; | |
1647 | break; | |
1648 | ||
1649 | case MFF_ARP_SHA: | |
1650 | case MFF_ND_SLL: | |
1651 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1652 | break; | |
1653 | ||
1654 | case MFF_ARP_THA: | |
1655 | case MFF_ND_TLL: | |
1656 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1657 | break; | |
1658 | ||
1659 | case MFF_TCP_SRC: | |
1660 | case MFF_UDP_SRC: | |
0d56eaf2 | 1661 | case MFF_SCTP_SRC: |
28da1f8f BP |
1662 | flow->tp_src = value->be16; |
1663 | break; | |
1664 | ||
1665 | case MFF_TCP_DST: | |
1666 | case MFF_UDP_DST: | |
0d56eaf2 | 1667 | case MFF_SCTP_DST: |
28da1f8f BP |
1668 | flow->tp_dst = value->be16; |
1669 | break; | |
1670 | ||
1671 | case MFF_ICMPV4_TYPE: | |
1672 | case MFF_ICMPV6_TYPE: | |
1673 | flow->tp_src = htons(value->u8); | |
1674 | break; | |
1675 | ||
1676 | case MFF_ICMPV4_CODE: | |
1677 | case MFF_ICMPV6_CODE: | |
1678 | flow->tp_dst = htons(value->u8); | |
1679 | break; | |
1680 | ||
1681 | case MFF_ND_TARGET: | |
1682 | flow->nd_target = value->ipv6; | |
1683 | break; | |
1684 | ||
1685 | case MFF_N_IDS: | |
1686 | default: | |
1687 | NOT_REACHED(); | |
1688 | } | |
1689 | } | |
1690 | ||
ccbe50f8 BP |
1691 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1692 | * | |
1693 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1694 | * prerequisites. */ | |
1695 | bool | |
1696 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1697 | { | |
1698 | union mf_value value; | |
1699 | ||
1700 | mf_get_value(mf, flow, &value); | |
1701 | return is_all_zeros((const uint8_t *) &value, mf->n_bytes); | |
1702 | } | |
1703 | ||
81a76618 | 1704 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1705 | * |
81a76618 | 1706 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1707 | * prerequisites. */ |
1708 | void | |
81a76618 | 1709 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1710 | { |
1711 | switch (mf->id) { | |
1712 | case MFF_TUN_ID: | |
81a76618 | 1713 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1714 | break; |
4fe3445a PS |
1715 | case MFF_TUN_SRC: |
1716 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1717 | break; | |
1718 | case MFF_TUN_DST: | |
1719 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1720 | break; | |
1721 | case MFF_TUN_FLAGS: | |
1722 | match_set_tun_flags_masked(match, 0, 0); | |
1723 | break; | |
1724 | case MFF_TUN_TOS: | |
1725 | match_set_tun_tos_masked(match, 0, 0); | |
1726 | break; | |
1727 | case MFF_TUN_TTL: | |
1728 | match_set_tun_ttl_masked(match, 0, 0); | |
1729 | break; | |
1730 | ||
969fc56c | 1731 | case MFF_METADATA: |
81a76618 | 1732 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
801d2b2a | 1733 | break; |
6a885fd0 BP |
1734 | |
1735 | case MFF_IN_PORT: | |
72333065 | 1736 | case MFF_IN_PORT_OXM: |
4e022ec0 AW |
1737 | match->flow.in_port.ofp_port = 0; |
1738 | match->wc.masks.in_port.ofp_port = 0; | |
6a885fd0 BP |
1739 | break; |
1740 | ||
1b567fb9 AA |
1741 | case MFF_SKB_PRIORITY: |
1742 | match->flow.skb_priority = 0; | |
1743 | match->wc.masks.skb_priority = 0; | |
1744 | break; | |
1745 | ||
1362e248 JG |
1746 | case MFF_PKT_MARK: |
1747 | match->flow.pkt_mark = 0; | |
1748 | match->wc.masks.pkt_mark = 0; | |
1b567fb9 AA |
1749 | break; |
1750 | ||
0d7e2fe4 | 1751 | CASE_MFF_REGS: |
81a76618 | 1752 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1753 | break; |
6a885fd0 BP |
1754 | |
1755 | case MFF_ETH_SRC: | |
81a76618 BP |
1756 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1757 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1758 | break; |
1759 | ||
1760 | case MFF_ETH_DST: | |
81a76618 BP |
1761 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1762 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1763 | break; |
1764 | ||
1765 | case MFF_ETH_TYPE: | |
81a76618 BP |
1766 | match->flow.dl_type = htons(0); |
1767 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1768 | break; |
1769 | ||
1770 | case MFF_VLAN_TCI: | |
81a76618 | 1771 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1772 | break; |
1773 | ||
441c57a9 | 1774 | case MFF_DL_VLAN: |
cc34bc8c | 1775 | case MFF_VLAN_VID: |
81a76618 | 1776 | match_set_any_vid(match); |
6a885fd0 BP |
1777 | break; |
1778 | ||
441c57a9 | 1779 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1780 | case MFF_VLAN_PCP: |
81a76618 | 1781 | match_set_any_pcp(match); |
6a885fd0 BP |
1782 | break; |
1783 | ||
b02475c5 SH |
1784 | case MFF_MPLS_LABEL: |
1785 | match_set_any_mpls_label(match); | |
1786 | break; | |
1787 | ||
1788 | case MFF_MPLS_TC: | |
1789 | match_set_any_mpls_tc(match); | |
1790 | break; | |
1791 | ||
1792 | case MFF_MPLS_BOS: | |
1793 | match_set_any_mpls_bos(match); | |
1794 | break; | |
1795 | ||
6a885fd0 BP |
1796 | case MFF_IPV4_SRC: |
1797 | case MFF_ARP_SPA: | |
81a76618 | 1798 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1799 | break; |
1800 | ||
1801 | case MFF_IPV4_DST: | |
1802 | case MFF_ARP_TPA: | |
81a76618 | 1803 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1804 | break; |
1805 | ||
1806 | case MFF_IPV6_SRC: | |
81a76618 BP |
1807 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1808 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1809 | break; |
1810 | ||
1811 | case MFF_IPV6_DST: | |
81a76618 BP |
1812 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1813 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1814 | break; |
1815 | ||
fa8223b7 | 1816 | case MFF_IPV6_LABEL: |
81a76618 BP |
1817 | match->wc.masks.ipv6_label = htonl(0); |
1818 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1819 | break; |
1820 | ||
6a885fd0 | 1821 | case MFF_IP_PROTO: |
81a76618 BP |
1822 | match->wc.masks.nw_proto = 0; |
1823 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1824 | break; |
1825 | ||
530180fd | 1826 | case MFF_IP_DSCP: |
1638b906 | 1827 | case MFF_IP_DSCP_SHIFTED: |
81a76618 BP |
1828 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1829 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1830 | break; |
1831 | ||
530180fd | 1832 | case MFF_IP_ECN: |
81a76618 BP |
1833 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1834 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1835 | break; |
1836 | ||
a61680c6 | 1837 | case MFF_IP_TTL: |
81a76618 BP |
1838 | match->wc.masks.nw_ttl = 0; |
1839 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1840 | break; |
1841 | ||
7257b535 | 1842 | case MFF_IP_FRAG: |
81a76618 BP |
1843 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1844 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1845 | break; |
1846 | ||
1847 | case MFF_ARP_OP: | |
81a76618 BP |
1848 | match->wc.masks.nw_proto = 0; |
1849 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1850 | break; |
1851 | ||
1852 | case MFF_ARP_SHA: | |
1853 | case MFF_ND_SLL: | |
81a76618 BP |
1854 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1855 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1856 | break; |
1857 | ||
1858 | case MFF_ARP_THA: | |
1859 | case MFF_ND_TLL: | |
81a76618 BP |
1860 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1861 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1862 | break; |
1863 | ||
1864 | case MFF_TCP_SRC: | |
1865 | case MFF_UDP_SRC: | |
0d56eaf2 | 1866 | case MFF_SCTP_SRC: |
268a95e0 BP |
1867 | case MFF_ICMPV4_TYPE: |
1868 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1869 | match->wc.masks.tp_src = htons(0); |
1870 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1871 | break; |
1872 | ||
1873 | case MFF_TCP_DST: | |
1874 | case MFF_UDP_DST: | |
0d56eaf2 | 1875 | case MFF_SCTP_DST: |
268a95e0 BP |
1876 | case MFF_ICMPV4_CODE: |
1877 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1878 | match->wc.masks.tp_dst = htons(0); |
1879 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1880 | break; |
1881 | ||
1882 | case MFF_ND_TARGET: | |
81a76618 BP |
1883 | memset(&match->wc.masks.nd_target, 0, |
1884 | sizeof match->wc.masks.nd_target); | |
1885 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1886 | break; |
1887 | ||
1888 | case MFF_N_IDS: | |
1889 | default: | |
1890 | NOT_REACHED(); | |
1891 | } | |
1892 | } | |
1893 | ||
81a76618 | 1894 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1895 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1896 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1897 | * 0-bit indicating a don't-care. | |
1898 | * | |
1899 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1900 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1901 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1902 | * |
1903 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1904 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
db0b6c29 | 1905 | enum ofputil_protocol |
6a885fd0 BP |
1906 | mf_set(const struct mf_field *mf, |
1907 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1908 | struct match *match) |
6a885fd0 BP |
1909 | { |
1910 | if (!mask || is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1911 | mf_set_value(mf, value, match); |
db0b6c29 | 1912 | return mf->usable_protocols; |
6a885fd0 | 1913 | } else if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { |
81a76618 | 1914 | mf_set_wild(mf, match); |
db0b6c29 | 1915 | return OFPUTIL_P_ANY; |
6a885fd0 BP |
1916 | } |
1917 | ||
1918 | switch (mf->id) { | |
1919 | case MFF_IN_PORT: | |
72333065 | 1920 | case MFF_IN_PORT_OXM: |
1b567fb9 | 1921 | case MFF_SKB_PRIORITY: |
6a885fd0 | 1922 | case MFF_ETH_TYPE: |
441c57a9 BP |
1923 | case MFF_DL_VLAN: |
1924 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1925 | case MFF_VLAN_PCP: |
b02475c5 SH |
1926 | case MFF_MPLS_LABEL: |
1927 | case MFF_MPLS_TC: | |
1928 | case MFF_MPLS_BOS: | |
6a885fd0 | 1929 | case MFF_IP_PROTO: |
a61680c6 | 1930 | case MFF_IP_TTL: |
530180fd | 1931 | case MFF_IP_DSCP: |
1638b906 | 1932 | case MFF_IP_DSCP_SHIFTED: |
530180fd | 1933 | case MFF_IP_ECN: |
6a885fd0 | 1934 | case MFF_ARP_OP: |
268a95e0 BP |
1935 | case MFF_ICMPV4_TYPE: |
1936 | case MFF_ICMPV4_CODE: | |
1937 | case MFF_ICMPV6_TYPE: | |
1938 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1939 | NOT_REACHED(); |
1940 | ||
1941 | case MFF_TUN_ID: | |
81a76618 | 1942 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1943 | break; |
4fe3445a PS |
1944 | case MFF_TUN_SRC: |
1945 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1946 | break; | |
1947 | case MFF_TUN_DST: | |
1948 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1949 | break; | |
1950 | case MFF_TUN_FLAGS: | |
1951 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1952 | break; | |
1953 | case MFF_TUN_TTL: | |
1954 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1955 | break; | |
1956 | case MFF_TUN_TOS: | |
1957 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1958 | break; | |
1959 | ||
969fc56c | 1960 | case MFF_METADATA: |
81a76618 | 1961 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1962 | break; |
6a885fd0 | 1963 | |
0d7e2fe4 | 1964 | CASE_MFF_REGS: |
81a76618 BP |
1965 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1966 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 | 1967 | break; |
ac923e91 JG |
1968 | |
1969 | case MFF_PKT_MARK: | |
1970 | match_set_pkt_mark_masked(match, ntohl(value->be32), | |
1971 | ntohl(mask->be32)); | |
1972 | break; | |
6a885fd0 BP |
1973 | |
1974 | case MFF_ETH_DST: | |
81a76618 | 1975 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1976 | break; |
1977 | ||
1978 | case MFF_ETH_SRC: | |
81a76618 | 1979 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1980 | break; |
1981 | ||
e878338b SH |
1982 | case MFF_ARP_SHA: |
1983 | case MFF_ND_SLL: | |
81a76618 | 1984 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1985 | break; |
1986 | ||
1987 | case MFF_ARP_THA: | |
1988 | case MFF_ND_TLL: | |
81a76618 | 1989 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1990 | break; |
1991 | ||
6a885fd0 | 1992 | case MFF_VLAN_TCI: |
81a76618 | 1993 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1994 | break; |
1995 | ||
cc34bc8c | 1996 | case MFF_VLAN_VID: |
81a76618 | 1997 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1998 | break; |
1999 | ||
6a885fd0 | 2000 | case MFF_IPV4_SRC: |
81a76618 | 2001 | match_set_nw_src_masked(match, value->be32, mask->be32); |
db0b6c29 | 2002 | goto cidr_check; |
6a885fd0 BP |
2003 | |
2004 | case MFF_IPV4_DST: | |
81a76618 | 2005 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
db0b6c29 | 2006 | goto cidr_check; |
6a885fd0 BP |
2007 | |
2008 | case MFF_IPV6_SRC: | |
81a76618 | 2009 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
2010 | break; |
2011 | ||
2012 | case MFF_IPV6_DST: | |
81a76618 | 2013 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
2014 | break; |
2015 | ||
32455024 SH |
2016 | case MFF_IPV6_LABEL: |
2017 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 2018 | mf_set_value(mf, value, match); |
32455024 | 2019 | } else { |
81a76618 | 2020 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
2021 | } |
2022 | break; | |
2023 | ||
47284b1f | 2024 | case MFF_ND_TARGET: |
81a76618 | 2025 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
2026 | break; |
2027 | ||
7257b535 | 2028 | case MFF_IP_FRAG: |
81a76618 | 2029 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
2030 | break; |
2031 | ||
6a885fd0 | 2032 | case MFF_ARP_SPA: |
81a76618 | 2033 | match_set_nw_src_masked(match, value->be32, mask->be32); |
db0b6c29 | 2034 | goto cidr_check; |
6a885fd0 BP |
2035 | |
2036 | case MFF_ARP_TPA: | |
81a76618 | 2037 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
db0b6c29 | 2038 | goto cidr_check; |
6a885fd0 | 2039 | |
73f33563 BP |
2040 | case MFF_TCP_SRC: |
2041 | case MFF_UDP_SRC: | |
0d56eaf2 | 2042 | case MFF_SCTP_SRC: |
81a76618 | 2043 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
2044 | break; |
2045 | ||
2046 | case MFF_TCP_DST: | |
2047 | case MFF_UDP_DST: | |
0d56eaf2 | 2048 | case MFF_SCTP_DST: |
81a76618 | 2049 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
2050 | break; |
2051 | ||
6a885fd0 BP |
2052 | case MFF_N_IDS: |
2053 | default: | |
2054 | NOT_REACHED(); | |
2055 | } | |
db0b6c29 JR |
2056 | |
2057 | return mf->usable_protocols_bitwise; | |
2058 | ||
2059 | cidr_check: | |
2060 | return ip_is_cidr(mask->be32) ? mf->usable_protocols : | |
2061 | mf->usable_protocols_bitwise; | |
6a885fd0 BP |
2062 | } |
2063 | ||
816fd533 BP |
2064 | static enum ofperr |
2065 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
2066 | const char *type) | |
6a885fd0 | 2067 | { |
816fd533 BP |
2068 | if (!sf->field) { |
2069 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
9e404d1e | 2070 | return OFPERR_OFPBAC_BAD_SET_TYPE; |
816fd533 BP |
2071 | } else if (!sf->n_bits) { |
2072 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
9e404d1e | 2073 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
2074 | } else if (sf->ofs >= sf->field->n_bits) { |
2075 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
2076 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 2077 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
2078 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { |
2079 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
2080 | "of %s field %s", sf->ofs, sf->n_bits, | |
2081 | sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 2082 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
2083 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { |
2084 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
2085 | type, sf->field->name); | |
9e404d1e | 2086 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
6a885fd0 | 2087 | } else { |
816fd533 BP |
2088 | return 0; |
2089 | } | |
816fd533 | 2090 | } |
6a885fd0 | 2091 | |
816fd533 BP |
2092 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
2093 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
2094 | * ofp_mkerr()). */ | |
2095 | enum ofperr | |
2096 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
2097 | { | |
2098 | return mf_check__(sf, flow, "source"); | |
2099 | } | |
6a885fd0 | 2100 | |
816fd533 BP |
2101 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
2102 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
2103 | * ofp_mkerr()). */ | |
2104 | enum ofperr | |
2105 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
2106 | { | |
2107 | int error = mf_check__(sf, flow, "destination"); | |
2108 | if (!error && !sf->field->writable) { | |
2109 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
2110 | sf->field->name); | |
9e404d1e | 2111 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
6a885fd0 | 2112 | } |
816fd533 | 2113 | return error; |
6a885fd0 BP |
2114 | } |
2115 | ||
81a76618 | 2116 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
2117 | * 'value' and 'mask', respectively. */ |
2118 | void | |
81a76618 | 2119 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
2120 | union mf_value *value, union mf_value *mask) |
2121 | { | |
81a76618 BP |
2122 | mf_get_value(mf, &match->flow, value); |
2123 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
2124 | } |
2125 | ||
2126 | /* Assigns a random value for field 'mf' to 'value'. */ | |
2127 | void | |
2128 | mf_random_value(const struct mf_field *mf, union mf_value *value) | |
2129 | { | |
2130 | random_bytes(value, mf->n_bytes); | |
2131 | ||
2132 | switch (mf->id) { | |
2133 | case MFF_TUN_ID: | |
4fe3445a PS |
2134 | case MFF_TUN_SRC: |
2135 | case MFF_TUN_DST: | |
2136 | case MFF_TUN_TOS: | |
2137 | case MFF_TUN_TTL: | |
2138 | case MFF_TUN_FLAGS: | |
969fc56c | 2139 | case MFF_METADATA: |
6a885fd0 | 2140 | case MFF_IN_PORT: |
1362e248 | 2141 | case MFF_PKT_MARK: |
1b567fb9 | 2142 | case MFF_SKB_PRIORITY: |
0d7e2fe4 | 2143 | CASE_MFF_REGS: |
6a885fd0 BP |
2144 | case MFF_ETH_SRC: |
2145 | case MFF_ETH_DST: | |
2146 | case MFF_ETH_TYPE: | |
2147 | case MFF_VLAN_TCI: | |
2148 | case MFF_IPV4_SRC: | |
2149 | case MFF_IPV4_DST: | |
2150 | case MFF_IPV6_SRC: | |
2151 | case MFF_IPV6_DST: | |
2152 | case MFF_IP_PROTO: | |
a61680c6 | 2153 | case MFF_IP_TTL: |
6a885fd0 BP |
2154 | case MFF_ARP_SPA: |
2155 | case MFF_ARP_TPA: | |
2156 | case MFF_ARP_SHA: | |
2157 | case MFF_ARP_THA: | |
2158 | case MFF_TCP_SRC: | |
2159 | case MFF_TCP_DST: | |
2160 | case MFF_UDP_SRC: | |
2161 | case MFF_UDP_DST: | |
0d56eaf2 JS |
2162 | case MFF_SCTP_SRC: |
2163 | case MFF_SCTP_DST: | |
268a95e0 BP |
2164 | case MFF_ICMPV4_TYPE: |
2165 | case MFF_ICMPV4_CODE: | |
2166 | case MFF_ICMPV6_TYPE: | |
2167 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
2168 | case MFF_ND_TARGET: |
2169 | case MFF_ND_SLL: | |
2170 | case MFF_ND_TLL: | |
2171 | break; | |
2172 | ||
72333065 | 2173 | case MFF_IN_PORT_OXM: |
4e022ec0 | 2174 | value->be32 = ofputil_port_to_ofp11(u16_to_ofp(ntohs(value->be16))); |
72333065 JR |
2175 | break; |
2176 | ||
fa8223b7 | 2177 | case MFF_IPV6_LABEL: |
ec45f343 | 2178 | value->be32 &= htonl(IPV6_LABEL_MASK); |
fa8223b7 JP |
2179 | break; |
2180 | ||
530180fd JP |
2181 | case MFF_IP_DSCP: |
2182 | value->u8 &= IP_DSCP_MASK; | |
2183 | break; | |
2184 | ||
1638b906 BP |
2185 | case MFF_IP_DSCP_SHIFTED: |
2186 | value->u8 &= IP_DSCP_MASK >> 2; | |
2187 | break; | |
2188 | ||
530180fd JP |
2189 | case MFF_IP_ECN: |
2190 | value->u8 &= IP_ECN_MASK; | |
6a885fd0 BP |
2191 | break; |
2192 | ||
7257b535 | 2193 | case MFF_IP_FRAG: |
eadef313 | 2194 | value->u8 &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
2195 | break; |
2196 | ||
6a885fd0 BP |
2197 | case MFF_ARP_OP: |
2198 | value->be16 &= htons(0xff); | |
2199 | break; | |
2200 | ||
441c57a9 | 2201 | case MFF_DL_VLAN: |
6a885fd0 BP |
2202 | value->be16 &= htons(VLAN_VID_MASK); |
2203 | break; | |
cc34bc8c BP |
2204 | case MFF_VLAN_VID: |
2205 | value->be16 &= htons(VLAN_VID_MASK | VLAN_CFI); | |
2206 | break; | |
6a885fd0 | 2207 | |
441c57a9 | 2208 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 2209 | case MFF_VLAN_PCP: |
6a885fd0 BP |
2210 | value->u8 &= 0x07; |
2211 | break; | |
2212 | ||
b02475c5 SH |
2213 | case MFF_MPLS_LABEL: |
2214 | value->be32 &= htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT); | |
2215 | break; | |
2216 | ||
2217 | case MFF_MPLS_TC: | |
2218 | value->u8 &= MPLS_TC_MASK >> MPLS_TC_SHIFT; | |
2219 | break; | |
2220 | ||
2221 | case MFF_MPLS_BOS: | |
2222 | value->u8 &= MPLS_BOS_MASK >> MPLS_BOS_SHIFT; | |
2223 | break; | |
2224 | ||
6a885fd0 BP |
2225 | case MFF_N_IDS: |
2226 | default: | |
2227 | NOT_REACHED(); | |
2228 | } | |
2229 | } | |
2230 | ||
2231 | static char * | |
2232 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
2233 | uint8_t *valuep, uint8_t *maskp) | |
2234 | { | |
2235 | unsigned long long int integer, mask; | |
2236 | char *tail; | |
2237 | int i; | |
2238 | ||
2239 | errno = 0; | |
2240 | integer = strtoull(s, &tail, 0); | |
2241 | if (errno || (*tail != '\0' && *tail != '/')) { | |
2242 | goto syntax_error; | |
2243 | } | |
2244 | ||
2245 | if (*tail == '/') { | |
2246 | mask = strtoull(tail + 1, &tail, 0); | |
2247 | if (errno || *tail != '\0') { | |
2248 | goto syntax_error; | |
2249 | } | |
2250 | } else { | |
2251 | mask = ULLONG_MAX; | |
2252 | } | |
2253 | ||
2254 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
2255 | valuep[i] = integer; | |
2256 | maskp[i] = mask; | |
2257 | integer >>= 8; | |
2258 | mask >>= 8; | |
2259 | } | |
2260 | if (integer) { | |
2261 | return xasprintf("%s: value too large for %u-byte field %s", | |
2262 | s, mf->n_bytes, mf->name); | |
2263 | } | |
2264 | return NULL; | |
2265 | ||
2266 | syntax_error: | |
2267 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
2268 | } | |
2269 | ||
2270 | static char * | |
2271 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
2272 | uint8_t mac[ETH_ADDR_LEN], | |
2273 | uint8_t mask[ETH_ADDR_LEN]) | |
2274 | { | |
279fb135 | 2275 | int n; |
6a885fd0 | 2276 | |
279fb135 | 2277 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 | 2278 | |
279fb135 BP |
2279 | n = -1; |
2280 | if (sscanf(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n) > 0 | |
2281 | && n == strlen(s)) { | |
6a885fd0 BP |
2282 | memset(mask, 0xff, ETH_ADDR_LEN); |
2283 | return NULL; | |
279fb135 | 2284 | } |
6a885fd0 | 2285 | |
279fb135 BP |
2286 | n = -1; |
2287 | if (sscanf(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n", | |
2288 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n) > 0 | |
2289 | && n == strlen(s)) { | |
2290 | return NULL; | |
6a885fd0 | 2291 | } |
279fb135 BP |
2292 | |
2293 | return xasprintf("%s: invalid Ethernet address", s); | |
6a885fd0 BP |
2294 | } |
2295 | ||
2296 | static char * | |
2297 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
2298 | ovs_be32 *ip, ovs_be32 *mask) | |
2299 | { | |
2300 | int prefix; | |
2301 | ||
cb22974d | 2302 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 BP |
2303 | |
2304 | if (sscanf(s, IP_SCAN_FMT"/"IP_SCAN_FMT, | |
2305 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask)) == IP_SCAN_COUNT * 2) { | |
2306 | /* OK. */ | |
2307 | } else if (sscanf(s, IP_SCAN_FMT"/%d", | |
2308 | IP_SCAN_ARGS(ip), &prefix) == IP_SCAN_COUNT + 1) { | |
2309 | if (prefix <= 0 || prefix > 32) { | |
2310 | return xasprintf("%s: network prefix bits not between 1 and " | |
2311 | "32", s); | |
2312 | } else if (prefix == 32) { | |
b8266395 | 2313 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
2314 | } else { |
2315 | *mask = htonl(((1u << prefix) - 1) << (32 - prefix)); | |
2316 | } | |
2317 | } else if (sscanf(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip)) == IP_SCAN_COUNT) { | |
b8266395 | 2318 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
2319 | } else { |
2320 | return xasprintf("%s: invalid IP address", s); | |
2321 | } | |
2322 | return NULL; | |
2323 | } | |
2324 | ||
2325 | static char * | |
2326 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
2327 | struct in6_addr *value, struct in6_addr *mask) | |
2328 | { | |
2329 | char *str = xstrdup(s); | |
2330 | char *save_ptr = NULL; | |
2331 | const char *name, *netmask; | |
2332 | int retval; | |
2333 | ||
cb22974d | 2334 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
2335 | |
2336 | name = strtok_r(str, "/", &save_ptr); | |
2337 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
2338 | if (retval) { | |
2339 | char *err; | |
2340 | ||
2341 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
2342 | free(str); | |
2343 | ||
2344 | return err; | |
2345 | } | |
2346 | ||
2347 | netmask = strtok_r(NULL, "/", &save_ptr); | |
2348 | if (netmask) { | |
ff0b06ee BP |
2349 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
2350 | int prefix = atoi(netmask); | |
2351 | if (prefix <= 0 || prefix > 128) { | |
2352 | free(str); | |
2353 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
2354 | } else { | |
2355 | *mask = ipv6_create_mask(prefix); | |
2356 | } | |
6a885fd0 BP |
2357 | } |
2358 | } else { | |
2359 | *mask = in6addr_exact; | |
2360 | } | |
2361 | free(str); | |
2362 | ||
2363 | return NULL; | |
2364 | } | |
2365 | ||
2366 | static char * | |
2367 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
2368 | ovs_be16 *valuep, ovs_be16 *maskp) | |
2369 | { | |
4e022ec0 | 2370 | ofp_port_t port; |
6a885fd0 | 2371 | |
cb22974d | 2372 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
33ab38d9 JR |
2373 | |
2374 | if (ofputil_port_from_string(s, &port)) { | |
4e022ec0 | 2375 | *valuep = htons(ofp_to_u16(port)); |
b8266395 | 2376 | *maskp = OVS_BE16_MAX; |
6a885fd0 | 2377 | return NULL; |
6a885fd0 | 2378 | } |
33ab38d9 | 2379 | return xasprintf("%s: port value out of range for %s", s, mf->name); |
6a885fd0 BP |
2380 | } |
2381 | ||
72333065 JR |
2382 | static char * |
2383 | mf_from_ofp_port_string32(const struct mf_field *mf, const char *s, | |
2384 | ovs_be32 *valuep, ovs_be32 *maskp) | |
2385 | { | |
4e022ec0 | 2386 | ofp_port_t port; |
72333065 JR |
2387 | |
2388 | ovs_assert(mf->n_bytes == sizeof(ovs_be32)); | |
2389 | if (ofputil_port_from_string(s, &port)) { | |
2390 | *valuep = ofputil_port_to_ofp11(port); | |
b8266395 | 2391 | *maskp = OVS_BE32_MAX; |
72333065 JR |
2392 | return NULL; |
2393 | } | |
2394 | return xasprintf("%s: port value out of range for %s", s, mf->name); | |
2395 | } | |
2396 | ||
7257b535 BP |
2397 | struct frag_handling { |
2398 | const char *name; | |
2399 | uint8_t mask; | |
2400 | uint8_t value; | |
2401 | }; | |
2402 | ||
2403 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
2404 | #define A FLOW_NW_FRAG_ANY |
2405 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
2406 | /* name mask value */ |
2407 | ||
2408 | { "no", A|L, 0 }, | |
2409 | { "first", A|L, A }, | |
2410 | { "later", A|L, A|L }, | |
2411 | ||
2412 | { "no", A, 0 }, | |
2413 | { "yes", A, A }, | |
2414 | ||
2415 | { "not_later", L, 0 }, | |
2416 | { "later", L, L }, | |
2417 | #undef A | |
2418 | #undef L | |
2419 | }; | |
2420 | ||
2421 | static char * | |
2422 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
2423 | { | |
2424 | const struct frag_handling *h; | |
2425 | ||
2426 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2427 | if (!strcasecmp(s, h->name)) { | |
2428 | /* We force the upper bits of the mask on to make mf_parse_value() | |
2429 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 2430 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
2431 | *valuep = h->value; |
2432 | return NULL; | |
2433 | } | |
2434 | } | |
2435 | ||
2436 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
2437 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
2438 | } | |
2439 | ||
4fe3445a PS |
2440 | static int |
2441 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
2442 | ovs_be16 *res) | |
2443 | { | |
2444 | uint32_t result = 0; | |
2445 | char *save_ptr = NULL; | |
2446 | char *name; | |
2447 | int rc = 0; | |
2448 | char *s = xstrdup(s_); | |
2449 | ||
2450 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
2451 | name = strtok_r(NULL, " |", &save_ptr)) { | |
2452 | int name_len; | |
2453 | unsigned long long int flags; | |
2454 | uint32_t bit; | |
2455 | int n0; | |
2456 | ||
2457 | if (sscanf(name, "%lli%n", &flags, &n0) > 0 && n0 > 0) { | |
2458 | result |= flags; | |
2459 | continue; | |
2460 | } | |
2461 | name_len = strlen(name); | |
2462 | for (bit = 1; bit; bit <<= 1) { | |
2463 | const char *fname = bit_to_string(bit); | |
2464 | size_t len; | |
2465 | ||
2466 | if (!fname) { | |
2467 | continue; | |
2468 | } | |
2469 | ||
2470 | len = strlen(fname); | |
2471 | if (len != name_len) { | |
2472 | continue; | |
2473 | } | |
2474 | if (!strncmp(name, fname, len)) { | |
2475 | result |= bit; | |
2476 | break; | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | if (!bit) { | |
2481 | rc = -ENOENT; | |
2482 | goto out; | |
2483 | } | |
2484 | } | |
2485 | ||
2486 | *res = htons(result); | |
2487 | out: | |
2488 | free(s); | |
2489 | return rc; | |
2490 | } | |
2491 | ||
2492 | static char * | |
b0aa8146 | 2493 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
2494 | { |
2495 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b8266395 | 2496 | *maskp = OVS_BE16_MAX; |
4fe3445a PS |
2497 | return NULL; |
2498 | } | |
2499 | ||
2500 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
2501 | "\"csum\", \"key\"", s); | |
2502 | } | |
2503 | ||
6a885fd0 BP |
2504 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
2505 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
2506 | char * | |
2507 | mf_parse(const struct mf_field *mf, const char *s, | |
2508 | union mf_value *value, union mf_value *mask) | |
2509 | { | |
bedde04c | 2510 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
2511 | memset(value, 0, mf->n_bytes); |
2512 | memset(mask, 0, mf->n_bytes); | |
2513 | return NULL; | |
2514 | } | |
2515 | ||
2516 | switch (mf->string) { | |
2517 | case MFS_DECIMAL: | |
2518 | case MFS_HEXADECIMAL: | |
2519 | return mf_from_integer_string(mf, s, | |
2520 | (uint8_t *) value, (uint8_t *) mask); | |
2521 | ||
2522 | case MFS_ETHERNET: | |
2523 | return mf_from_ethernet_string(mf, s, value->mac, mask->mac); | |
2524 | ||
2525 | case MFS_IPV4: | |
2526 | return mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); | |
2527 | ||
2528 | case MFS_IPV6: | |
2529 | return mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); | |
2530 | ||
2531 | case MFS_OFP_PORT: | |
2532 | return mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); | |
7257b535 | 2533 | |
72333065 JR |
2534 | case MFS_OFP_PORT_OXM: |
2535 | return mf_from_ofp_port_string32(mf, s, &value->be32, &mask->be32); | |
2536 | ||
7257b535 BP |
2537 | case MFS_FRAG: |
2538 | return mf_from_frag_string(s, &value->u8, &mask->u8); | |
4fe3445a PS |
2539 | |
2540 | case MFS_TNL_FLAGS: | |
cb22974d | 2541 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
b0aa8146 | 2542 | return mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
6a885fd0 BP |
2543 | } |
2544 | NOT_REACHED(); | |
2545 | } | |
2546 | ||
2547 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2548 | * successful, otherwise a malloc()'d string describing the error. */ | |
2549 | char * | |
2550 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2551 | { | |
2552 | union mf_value mask; | |
2553 | char *error; | |
2554 | ||
2555 | error = mf_parse(mf, s, value, &mask); | |
2556 | if (error) { | |
2557 | return error; | |
2558 | } | |
2559 | ||
2560 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2561 | return xasprintf("%s: wildcards not allowed here", s); | |
2562 | } | |
2563 | return NULL; | |
2564 | } | |
2565 | ||
2566 | static void | |
2567 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2568 | const uint8_t *maskp, struct ds *s) | |
2569 | { | |
2570 | unsigned long long int integer; | |
2571 | int i; | |
2572 | ||
cb22974d | 2573 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 BP |
2574 | |
2575 | integer = 0; | |
2576 | for (i = 0; i < mf->n_bytes; i++) { | |
2577 | integer = (integer << 8) | valuep[i]; | |
2578 | } | |
2579 | if (mf->string == MFS_HEXADECIMAL) { | |
2580 | ds_put_format(s, "%#llx", integer); | |
2581 | } else { | |
2582 | ds_put_format(s, "%lld", integer); | |
2583 | } | |
2584 | ||
2585 | if (maskp) { | |
2586 | unsigned long long int mask; | |
2587 | ||
2588 | mask = 0; | |
2589 | for (i = 0; i < mf->n_bytes; i++) { | |
2590 | mask = (mask << 8) | maskp[i]; | |
2591 | } | |
2592 | ||
2593 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2594 | * not sure that that a bit-mask written in decimal is ever easier to | |
2595 | * understand than the same bit-mask written in hexadecimal. */ | |
2596 | ds_put_format(s, "/%#llx", mask); | |
2597 | } | |
2598 | } | |
2599 | ||
7257b535 | 2600 | static void |
8f75dea3 | 2601 | mf_format_frag_string(uint8_t value, uint8_t mask, struct ds *s) |
7257b535 BP |
2602 | { |
2603 | const struct frag_handling *h; | |
7257b535 | 2604 | |
eadef313 | 2605 | mask &= FLOW_NW_FRAG_MASK; |
8f75dea3 | 2606 | value &= mask; |
7257b535 BP |
2607 | |
2608 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2609 | if (value == h->value && mask == h->mask) { | |
2610 | ds_put_cstr(s, h->name); | |
2611 | return; | |
2612 | } | |
2613 | } | |
2614 | ds_put_cstr(s, "<error>"); | |
2615 | } | |
2616 | ||
4fe3445a PS |
2617 | static void |
2618 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2619 | { | |
2620 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2621 | } | |
2622 | ||
6a885fd0 BP |
2623 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2624 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2625 | void | |
2626 | mf_format(const struct mf_field *mf, | |
2627 | const union mf_value *value, const union mf_value *mask, | |
2628 | struct ds *s) | |
2629 | { | |
2630 | if (mask) { | |
2631 | if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
2632 | ds_put_cstr(s, "ANY"); | |
2633 | return; | |
2634 | } else if (is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
2635 | mask = NULL; | |
2636 | } | |
2637 | } | |
2638 | ||
2639 | switch (mf->string) { | |
72333065 JR |
2640 | case MFS_OFP_PORT_OXM: |
2641 | if (!mask) { | |
4e022ec0 | 2642 | ofp_port_t port; |
bc146369 | 2643 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
2644 | ofputil_format_port(port, s); |
2645 | break; | |
2646 | } | |
2647 | /* fall through */ | |
6a885fd0 BP |
2648 | case MFS_OFP_PORT: |
2649 | if (!mask) { | |
4e022ec0 | 2650 | ofputil_format_port(u16_to_ofp(ntohs(value->be16)), s); |
6a885fd0 BP |
2651 | break; |
2652 | } | |
2653 | /* fall through */ | |
2654 | case MFS_DECIMAL: | |
2655 | case MFS_HEXADECIMAL: | |
2656 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2657 | break; | |
2658 | ||
2659 | case MFS_ETHERNET: | |
3b4d8ad3 | 2660 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2661 | break; |
2662 | ||
2663 | case MFS_IPV4: | |
b8266395 | 2664 | ip_format_masked(value->be32, mask ? mask->be32 : OVS_BE32_MAX, s); |
6a885fd0 BP |
2665 | break; |
2666 | ||
2667 | case MFS_IPV6: | |
2668 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2669 | break; | |
2670 | ||
7257b535 | 2671 | case MFS_FRAG: |
8f75dea3 | 2672 | mf_format_frag_string(value->u8, mask ? mask->u8 : UINT8_MAX, s); |
7257b535 BP |
2673 | break; |
2674 | ||
4fe3445a PS |
2675 | case MFS_TNL_FLAGS: |
2676 | mf_format_tnl_flags_string(&value->be16, s); | |
2677 | break; | |
2678 | ||
6a885fd0 BP |
2679 | default: |
2680 | NOT_REACHED(); | |
2681 | } | |
2682 | } | |
816fd533 | 2683 | \f |
9bab681f IY |
2684 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2685 | * least-significant bits in 'x'. | |
2686 | */ | |
2687 | void | |
2688 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2689 | const union mf_subvalue *x, struct flow *flow) | |
2690 | { | |
2691 | const struct mf_field *field = sf->field; | |
2692 | union mf_value value; | |
2693 | ||
2694 | mf_get_value(field, flow, &value); | |
158edc8d | 2695 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2696 | sf->ofs, sf->n_bits); |
2697 | mf_set_flow_value(field, &value, flow); | |
2698 | } | |
2699 | ||
81a76618 | 2700 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2701 | * least-significant bits in 'x'. |
615660a9 | 2702 | */ |
1b35df45 BP |
2703 | void |
2704 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2705 | struct match *match) |
1b35df45 BP |
2706 | { |
2707 | const struct mf_field *field = sf->field; | |
2708 | union mf_value value, mask; | |
2709 | ||
81a76618 | 2710 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2711 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2712 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2713 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2714 | } |
2715 | ||
1b35df45 BP |
2716 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2717 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2718 | void | |
2719 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2720 | union mf_subvalue *x) | |
2721 | { | |
2722 | union mf_value value; | |
2723 | ||
2724 | mf_get_value(sf->field, flow, &value); | |
2725 | ||
2726 | memset(x, 0, sizeof *x); | |
2727 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2728 | x, sizeof *x, 0, | |
2729 | sf->n_bits); | |
2730 | } | |
2731 | ||
816fd533 BP |
2732 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2733 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2734 | * less. */ | |
2735 | uint64_t | |
2736 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2737 | { | |
2738 | union mf_value value; | |
2739 | ||
2740 | mf_get_value(sf->field, flow, &value); | |
2741 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2742 | } | |
2743 | ||
2744 | /* Formats 'sf' into 's' in a format normally acceptable to | |
2745 | * mf_parse_subfield(). (It won't be acceptable if sf->field is NULL or if | |
2746 | * sf->field has no NXM name.) */ | |
2747 | void | |
2748 | mf_format_subfield(const struct mf_subfield *sf, struct ds *s) | |
2749 | { | |
2750 | if (!sf->field) { | |
2751 | ds_put_cstr(s, "<unknown>"); | |
2752 | } else if (sf->field->nxm_name) { | |
2753 | ds_put_cstr(s, sf->field->nxm_name); | |
2754 | } else if (sf->field->nxm_header) { | |
2755 | uint32_t header = sf->field->nxm_header; | |
2756 | ds_put_format(s, "%d:%d", NXM_VENDOR(header), NXM_FIELD(header)); | |
2757 | } else { | |
2758 | ds_put_cstr(s, sf->field->name); | |
2759 | } | |
2760 | ||
33500edd | 2761 | if (sf->field && sf->ofs == 0 && sf->n_bits == sf->field->n_bits) { |
816fd533 BP |
2762 | ds_put_cstr(s, "[]"); |
2763 | } else if (sf->n_bits == 1) { | |
2764 | ds_put_format(s, "[%d]", sf->ofs); | |
2765 | } else { | |
2766 | ds_put_format(s, "[%d..%d]", sf->ofs, sf->ofs + sf->n_bits - 1); | |
2767 | } | |
2768 | } | |
2769 | ||
2770 | static const struct mf_field * | |
2771 | mf_parse_subfield_name(const char *name, int name_len, bool *wild) | |
2772 | { | |
2773 | int i; | |
2774 | ||
2775 | *wild = name_len > 2 && !memcmp(&name[name_len - 2], "_W", 2); | |
2776 | if (*wild) { | |
2777 | name_len -= 2; | |
2778 | } | |
2779 | ||
2780 | for (i = 0; i < MFF_N_IDS; i++) { | |
2781 | const struct mf_field *mf = mf_from_id(i); | |
2782 | ||
2783 | if (mf->nxm_name | |
2784 | && !strncmp(mf->nxm_name, name, name_len) | |
2785 | && mf->nxm_name[name_len] == '\0') { | |
2786 | return mf; | |
2787 | } | |
b5e5143b BP |
2788 | if (mf->oxm_name |
2789 | && !strncmp(mf->oxm_name, name, name_len) | |
2790 | && mf->oxm_name[name_len] == '\0') { | |
2791 | return mf; | |
2792 | } | |
816fd533 BP |
2793 | } |
2794 | ||
2795 | return NULL; | |
2796 | } | |
2797 | ||
2798 | /* Parses a subfield from the beginning of '*sp' into 'sf'. If successful, | |
2799 | * returns NULL and advances '*sp' to the first byte following the parsed | |
2800 | * string. On failure, returns a malloc()'d error message, does not modify | |
2801 | * '*sp', and does not properly initialize 'sf'. | |
2802 | * | |
2803 | * The syntax parsed from '*sp' takes the form "header[start..end]" where | |
2804 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2805 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2806 | * may both be omitted (the [] are still required) to indicate an entire | |
2807 | * field. */ | |
bdda5aca | 2808 | char * WARN_UNUSED_RESULT |
816fd533 BP |
2809 | mf_parse_subfield__(struct mf_subfield *sf, const char **sp) |
2810 | { | |
2811 | const struct mf_field *field; | |
2812 | const char *name; | |
2813 | int start, end; | |
2814 | const char *s; | |
2815 | int name_len; | |
2816 | bool wild; | |
2817 | ||
2818 | s = *sp; | |
2819 | name = s; | |
2820 | name_len = strcspn(s, "["); | |
2821 | if (s[name_len] != '[') { | |
2822 | return xasprintf("%s: missing [ looking for field name", *sp); | |
2823 | } | |
2824 | ||
2825 | field = mf_parse_subfield_name(name, name_len, &wild); | |
2826 | if (!field) { | |
2827 | return xasprintf("%s: unknown field `%.*s'", *sp, name_len, s); | |
2828 | } | |
2829 | ||
2830 | s += name_len; | |
2831 | if (sscanf(s, "[%d..%d]", &start, &end) == 2) { | |
2832 | /* Nothing to do. */ | |
2833 | } else if (sscanf(s, "[%d]", &start) == 1) { | |
2834 | end = start; | |
2835 | } else if (!strncmp(s, "[]", 2)) { | |
2836 | start = 0; | |
2837 | end = field->n_bits - 1; | |
2838 | } else { | |
2839 | return xasprintf("%s: syntax error expecting [] or [<bit>] or " | |
2840 | "[<start>..<end>]", *sp); | |
2841 | } | |
2842 | s = strchr(s, ']') + 1; | |
2843 | ||
2844 | if (start > end) { | |
2845 | return xasprintf("%s: starting bit %d is after ending bit %d", | |
2846 | *sp, start, end); | |
2847 | } else if (start >= field->n_bits) { | |
2848 | return xasprintf("%s: starting bit %d is not valid because field is " | |
2849 | "only %d bits wide", *sp, start, field->n_bits); | |
2850 | } else if (end >= field->n_bits){ | |
2851 | return xasprintf("%s: ending bit %d is not valid because field is " | |
2852 | "only %d bits wide", *sp, end, field->n_bits); | |
2853 | } | |
2854 | ||
2855 | sf->field = field; | |
2856 | sf->ofs = start; | |
2857 | sf->n_bits = end - start + 1; | |
2858 | ||
2859 | *sp = s; | |
2860 | return NULL; | |
2861 | } | |
2862 | ||
bdda5aca BP |
2863 | /* Parses a subfield from the entirety of 's' into 'sf'. Returns NULL if |
2864 | * successful, otherwise a malloc()'d string describing the error. The caller | |
2865 | * is responsible for freeing the returned string. | |
816fd533 BP |
2866 | * |
2867 | * The syntax parsed from 's' takes the form "header[start..end]" where | |
2868 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2869 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2870 | * may both be omitted (the [] are still required) to indicate an entire | |
2871 | * field. */ | |
bdda5aca | 2872 | char * WARN_UNUSED_RESULT |
816fd533 BP |
2873 | mf_parse_subfield(struct mf_subfield *sf, const char *s) |
2874 | { | |
bdda5aca BP |
2875 | char *error = mf_parse_subfield__(sf, &s); |
2876 | if (!error && s[0]) { | |
2877 | error = xstrdup("unexpected input following field syntax"); | |
816fd533 | 2878 | } |
bdda5aca | 2879 | return error; |
816fd533 | 2880 | } |
9bab681f IY |
2881 | |
2882 | void | |
2883 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2884 | { | |
2885 | int i; | |
2886 | ||
2887 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2888 | if (subvalue->u8[i]) { | |
2889 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2890 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2891 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2892 | } | |
2893 | return; | |
2894 | } | |
2895 | } | |
2896 | ds_put_char(s, '0'); | |
2897 | } |