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Commit | Line | Data |
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6a885fd0 | 1 | /* |
e0edde6f | 2 | * Copyright (c) 2011, 2012 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 | ||
21 | #include <assert.h> | |
22 | #include <errno.h> | |
23 | #include <limits.h> | |
24 | #include <netinet/icmp6.h> | |
25 | #include <netinet/ip6.h> | |
26 | ||
27 | #include "classifier.h" | |
28 | #include "dynamic-string.h" | |
816fd533 | 29 | #include "ofp-errors.h" |
6a885fd0 BP |
30 | #include "ofp-util.h" |
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", |
4fe3445a PS |
58 | }, { |
59 | MFF_TUN_SRC, "tun_src", NULL, | |
60 | MF_FIELD_SIZES(be32), | |
61 | MFM_NONE, | |
62 | MFS_IPV4, | |
63 | MFP_NONE, | |
64 | false, | |
65 | 0, NULL, | |
66 | 0, NULL, | |
67 | }, { | |
68 | MFF_TUN_DST, "tun_dst", NULL, | |
69 | MF_FIELD_SIZES(be32), | |
70 | MFM_NONE, | |
71 | MFS_IPV4, | |
72 | MFP_NONE, | |
73 | false, | |
74 | 0, NULL, | |
75 | 0, NULL, | |
76 | }, { | |
77 | MFF_TUN_FLAGS, "tun_flags", NULL, | |
78 | MF_FIELD_SIZES(be16), | |
79 | MFM_NONE, | |
80 | MFS_TNL_FLAGS, | |
81 | MFP_NONE, | |
82 | false, | |
83 | 0, NULL, | |
84 | 0, NULL, | |
85 | }, { | |
86 | MFF_TUN_TOS, "tun_tos", NULL, | |
87 | MF_FIELD_SIZES(u8), | |
88 | MFM_NONE, | |
89 | MFS_DECIMAL, | |
90 | MFP_NONE, | |
91 | false, | |
92 | 0, NULL, | |
93 | 0, NULL, | |
94 | }, { | |
95 | MFF_TUN_TTL, "tun_ttl", NULL, | |
96 | MF_FIELD_SIZES(u8), | |
97 | MFM_NONE, | |
98 | MFS_DECIMAL, | |
99 | MFP_NONE, | |
100 | false, | |
101 | 0, NULL, | |
102 | 0, NULL, | |
969fc56c JS |
103 | }, { |
104 | MFF_METADATA, "metadata", NULL, | |
105 | MF_FIELD_SIZES(be64), | |
0bdc4bec | 106 | MFM_FULLY, |
969fc56c JS |
107 | MFS_HEXADECIMAL, |
108 | MFP_NONE, | |
109 | true, | |
110 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
111 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
6a885fd0 BP |
112 | }, { |
113 | MFF_IN_PORT, "in_port", NULL, | |
114 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 115 | MFM_NONE, |
6a885fd0 BP |
116 | MFS_OFP_PORT, |
117 | MFP_NONE, | |
28da1f8f BP |
118 | false, |
119 | NXM_OF_IN_PORT, "NXM_OF_IN_PORT", | |
36f3999b | 120 | OXM_OF_IN_PORT, "OXM_OF_IN_PORT", |
1b567fb9 AA |
121 | }, { |
122 | MFF_SKB_PRIORITY, "skb_priority", NULL, | |
123 | MF_FIELD_SIZES(be32), | |
124 | MFM_NONE, | |
125 | MFS_HEXADECIMAL, | |
126 | MFP_NONE, | |
127 | false, | |
128 | 0, NULL, | |
129 | 0, NULL, | |
130 | }, { | |
131 | MFF_SKB_MARK, "skb_mark", NULL, | |
132 | MF_FIELD_SIZES(be32), | |
133 | MFM_NONE, | |
134 | MFS_HEXADECIMAL, | |
135 | MFP_NONE, | |
136 | false, | |
137 | 0, NULL, | |
138 | 0, NULL, | |
6a885fd0 BP |
139 | }, |
140 | ||
141 | #define REGISTER(IDX) \ | |
142 | { \ | |
143 | MFF_REG##IDX, "reg" #IDX, NULL, \ | |
144 | MF_FIELD_SIZES(be32), \ | |
0bdc4bec | 145 | MFM_FULLY, \ |
6a885fd0 BP |
146 | MFS_HEXADECIMAL, \ |
147 | MFP_NONE, \ | |
28da1f8f | 148 | true, \ |
b5e5143b BP |
149 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ |
150 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ | |
6a885fd0 BP |
151 | } |
152 | #if FLOW_N_REGS > 0 | |
153 | REGISTER(0), | |
154 | #endif | |
155 | #if FLOW_N_REGS > 1 | |
156 | REGISTER(1), | |
157 | #endif | |
158 | #if FLOW_N_REGS > 2 | |
159 | REGISTER(2), | |
160 | #endif | |
161 | #if FLOW_N_REGS > 3 | |
162 | REGISTER(3), | |
163 | #endif | |
164 | #if FLOW_N_REGS > 4 | |
d2c0fed9 JP |
165 | REGISTER(4), |
166 | #endif | |
167 | #if FLOW_N_REGS > 5 | |
e9358af6 EJ |
168 | REGISTER(5), |
169 | #endif | |
170 | #if FLOW_N_REGS > 6 | |
171 | REGISTER(6), | |
172 | #endif | |
173 | #if FLOW_N_REGS > 7 | |
174 | REGISTER(7), | |
175 | #endif | |
176 | #if FLOW_N_REGS > 8 | |
6a885fd0 BP |
177 | #error |
178 | #endif | |
179 | ||
180 | /* ## -- ## */ | |
181 | /* ## L2 ## */ | |
182 | /* ## -- ## */ | |
183 | ||
184 | { | |
185 | MFF_ETH_SRC, "eth_src", "dl_src", | |
186 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 187 | MFM_FULLY, |
6a885fd0 BP |
188 | MFS_ETHERNET, |
189 | MFP_NONE, | |
28da1f8f BP |
190 | true, |
191 | NXM_OF_ETH_SRC, "NXM_OF_ETH_SRC", | |
36f3999b | 192 | OXM_OF_ETH_SRC, "OXM_OF_ETH_SRC", |
6a885fd0 BP |
193 | }, { |
194 | MFF_ETH_DST, "eth_dst", "dl_dst", | |
195 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 196 | MFM_FULLY, |
6a885fd0 BP |
197 | MFS_ETHERNET, |
198 | MFP_NONE, | |
28da1f8f BP |
199 | true, |
200 | NXM_OF_ETH_DST, "NXM_OF_ETH_DST", | |
36f3999b | 201 | OXM_OF_ETH_DST, "OXM_OF_ETH_DST", |
6a885fd0 BP |
202 | }, { |
203 | MFF_ETH_TYPE, "eth_type", "dl_type", | |
204 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 205 | MFM_NONE, |
6a885fd0 BP |
206 | MFS_HEXADECIMAL, |
207 | MFP_NONE, | |
28da1f8f BP |
208 | false, |
209 | NXM_OF_ETH_TYPE, "NXM_OF_ETH_TYPE", | |
36f3999b | 210 | OXM_OF_ETH_TYPE, "OXM_OF_ETH_TYPE", |
6a885fd0 BP |
211 | }, |
212 | ||
213 | { | |
214 | MFF_VLAN_TCI, "vlan_tci", NULL, | |
215 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 216 | MFM_FULLY, |
6a885fd0 BP |
217 | MFS_HEXADECIMAL, |
218 | MFP_NONE, | |
28da1f8f BP |
219 | true, |
220 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", | |
b5e5143b | 221 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", |
6a885fd0 | 222 | }, { |
441c57a9 | 223 | MFF_DL_VLAN, "dl_vlan", NULL, |
6a885fd0 | 224 | sizeof(ovs_be16), 12, |
0bdc4bec | 225 | MFM_NONE, |
6a885fd0 BP |
226 | MFS_DECIMAL, |
227 | MFP_NONE, | |
28da1f8f | 228 | true, |
cc34bc8c BP |
229 | 0, NULL, |
230 | 0, NULL, | |
231 | }, { | |
232 | MFF_VLAN_VID, "vlan_vid", NULL, | |
233 | sizeof(ovs_be16), 12, | |
0bdc4bec | 234 | MFM_FULLY, |
cc34bc8c BP |
235 | MFS_DECIMAL, |
236 | MFP_NONE, | |
237 | true, | |
b5e5143b | 238 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
36f3999b | 239 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
6a885fd0 | 240 | }, { |
441c57a9 | 241 | MFF_DL_VLAN_PCP, "dl_vlan_pcp", NULL, |
6a885fd0 | 242 | 1, 3, |
0bdc4bec | 243 | MFM_NONE, |
6a885fd0 BP |
244 | MFS_DECIMAL, |
245 | MFP_NONE, | |
28da1f8f | 246 | true, |
cc34bc8c BP |
247 | 0, NULL, |
248 | 0, NULL, | |
249 | }, { | |
250 | MFF_VLAN_PCP, "vlan_pcp", NULL, | |
251 | 1, 3, | |
0bdc4bec | 252 | MFM_NONE, |
cc34bc8c | 253 | MFS_DECIMAL, |
8069b0da | 254 | MFP_VLAN_VID, |
cc34bc8c | 255 | true, |
b5e5143b | 256 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
36f3999b | 257 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
6a885fd0 BP |
258 | }, |
259 | ||
260 | /* ## -- ## */ | |
261 | /* ## L3 ## */ | |
262 | /* ## -- ## */ | |
263 | ||
264 | { | |
265 | MFF_IPV4_SRC, "ip_src", "nw_src", | |
266 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 267 | MFM_FULLY, |
6a885fd0 BP |
268 | MFS_IPV4, |
269 | MFP_IPV4, | |
28da1f8f BP |
270 | true, |
271 | NXM_OF_IP_SRC, "NXM_OF_IP_SRC", | |
36f3999b | 272 | OXM_OF_IPV4_SRC, "OXM_OF_IPV4_SRC", |
6a885fd0 BP |
273 | }, { |
274 | MFF_IPV4_DST, "ip_dst", "nw_dst", | |
275 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 276 | MFM_FULLY, |
6a885fd0 BP |
277 | MFS_IPV4, |
278 | MFP_IPV4, | |
28da1f8f BP |
279 | true, |
280 | NXM_OF_IP_DST, "NXM_OF_IP_DST", | |
36f3999b | 281 | OXM_OF_IPV4_DST, "OXM_OF_IPV4_DST", |
6a885fd0 BP |
282 | }, |
283 | ||
284 | { | |
285 | MFF_IPV6_SRC, "ipv6_src", NULL, | |
286 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 287 | MFM_FULLY, |
6a885fd0 BP |
288 | MFS_IPV6, |
289 | MFP_IPV6, | |
28da1f8f BP |
290 | true, |
291 | NXM_NX_IPV6_SRC, "NXM_NX_IPV6_SRC", | |
36f3999b | 292 | OXM_OF_IPV6_SRC, "OXM_OF_IPV6_SRC", |
6a885fd0 BP |
293 | }, { |
294 | MFF_IPV6_DST, "ipv6_dst", NULL, | |
295 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 296 | MFM_FULLY, |
6a885fd0 BP |
297 | MFS_IPV6, |
298 | MFP_IPV6, | |
28da1f8f BP |
299 | true, |
300 | NXM_NX_IPV6_DST, "NXM_NX_IPV6_DST", | |
36f3999b | 301 | OXM_OF_IPV6_DST, "OXM_OF_IPV6_DST", |
6a885fd0 | 302 | }, |
fa8223b7 JP |
303 | { |
304 | MFF_IPV6_LABEL, "ipv6_label", NULL, | |
305 | 4, 20, | |
0bdc4bec | 306 | MFM_FULLY, |
fa8223b7 JP |
307 | MFS_HEXADECIMAL, |
308 | MFP_IPV6, | |
28da1f8f BP |
309 | false, |
310 | NXM_NX_IPV6_LABEL, "NXM_NX_IPV6_LABEL", | |
36f3999b | 311 | OXM_OF_IPV6_FLABEL, "OXM_OF_IPV6_FLABEL", |
fa8223b7 | 312 | }, |
6a885fd0 BP |
313 | |
314 | { | |
315 | MFF_IP_PROTO, "nw_proto", NULL, | |
316 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 317 | MFM_NONE, |
6a885fd0 BP |
318 | MFS_DECIMAL, |
319 | MFP_IP_ANY, | |
28da1f8f BP |
320 | false, |
321 | NXM_OF_IP_PROTO, "NXM_OF_IP_PROTO", | |
36f3999b | 322 | OXM_OF_IP_PROTO, "OXM_OF_IP_PROTO", |
6a885fd0 | 323 | }, { |
530180fd | 324 | MFF_IP_DSCP, "nw_tos", NULL, |
6a885fd0 | 325 | MF_FIELD_SIZES(u8), |
0bdc4bec | 326 | MFM_NONE, |
6a885fd0 BP |
327 | MFS_DECIMAL, |
328 | MFP_IP_ANY, | |
28da1f8f | 329 | true, |
36f3999b SH |
330 | NXM_OF_IP_TOS, "NXM_OF_IP_TOS", |
331 | OXM_OF_IP_DSCP, "OXM_OF_IP_DSCP", | |
530180fd JP |
332 | }, { |
333 | MFF_IP_ECN, "nw_ecn", NULL, | |
334 | 1, 2, | |
0bdc4bec | 335 | MFM_NONE, |
530180fd JP |
336 | MFS_DECIMAL, |
337 | MFP_IP_ANY, | |
28da1f8f BP |
338 | true, |
339 | NXM_NX_IP_ECN, "NXM_NX_IP_ECN", | |
36f3999b | 340 | OXM_OF_IP_ECN, "OXM_OF_IP_ECN", |
a61680c6 JP |
341 | }, { |
342 | MFF_IP_TTL, "nw_ttl", NULL, | |
343 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 344 | MFM_NONE, |
a61680c6 JP |
345 | MFS_DECIMAL, |
346 | MFP_IP_ANY, | |
28da1f8f | 347 | true, |
36f3999b | 348 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
b5e5143b | 349 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
7257b535 BP |
350 | }, { |
351 | MFF_IP_FRAG, "ip_frag", NULL, | |
352 | 1, 2, | |
0bdc4bec | 353 | MFM_FULLY, |
7257b535 BP |
354 | MFS_FRAG, |
355 | MFP_IP_ANY, | |
28da1f8f | 356 | false, |
36f3999b | 357 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
b5e5143b | 358 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
6a885fd0 BP |
359 | }, |
360 | ||
361 | { | |
362 | MFF_ARP_OP, "arp_op", NULL, | |
363 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 364 | MFM_NONE, |
6a885fd0 BP |
365 | MFS_DECIMAL, |
366 | MFP_ARP, | |
28da1f8f BP |
367 | false, |
368 | NXM_OF_ARP_OP, "NXM_OF_ARP_OP", | |
36f3999b | 369 | OXM_OF_ARP_OP, "OXM_OF_ARP_OP", |
6a885fd0 BP |
370 | }, { |
371 | MFF_ARP_SPA, "arp_spa", NULL, | |
372 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 373 | MFM_FULLY, |
6a885fd0 BP |
374 | MFS_IPV4, |
375 | MFP_ARP, | |
28da1f8f BP |
376 | false, |
377 | NXM_OF_ARP_SPA, "NXM_OF_ARP_SPA", | |
36f3999b | 378 | OXM_OF_ARP_SPA, "OXM_OF_ARP_SPA", |
6a885fd0 BP |
379 | }, { |
380 | MFF_ARP_TPA, "arp_tpa", NULL, | |
381 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 382 | MFM_FULLY, |
6a885fd0 BP |
383 | MFS_IPV4, |
384 | MFP_ARP, | |
28da1f8f BP |
385 | false, |
386 | NXM_OF_ARP_TPA, "NXM_OF_ARP_TPA", | |
36f3999b | 387 | OXM_OF_ARP_TPA, "OXM_OF_ARP_TPA", |
6a885fd0 BP |
388 | }, { |
389 | MFF_ARP_SHA, "arp_sha", NULL, | |
390 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 391 | MFM_FULLY, |
6a885fd0 BP |
392 | MFS_ETHERNET, |
393 | MFP_ARP, | |
28da1f8f BP |
394 | false, |
395 | NXM_NX_ARP_SHA, "NXM_NX_ARP_SHA", | |
36f3999b | 396 | OXM_OF_ARP_SHA, "OXM_OF_ARP_SHA", |
6a885fd0 BP |
397 | }, { |
398 | MFF_ARP_THA, "arp_tha", NULL, | |
399 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 400 | MFM_FULLY, |
6a885fd0 BP |
401 | MFS_ETHERNET, |
402 | MFP_ARP, | |
28da1f8f BP |
403 | false, |
404 | NXM_NX_ARP_THA, "NXM_NX_ARP_THA", | |
36f3999b | 405 | OXM_OF_ARP_THA, "OXM_OF_ARP_THA", |
6a885fd0 BP |
406 | }, |
407 | ||
408 | /* ## -- ## */ | |
409 | /* ## L4 ## */ | |
410 | /* ## -- ## */ | |
411 | ||
412 | { | |
413 | MFF_TCP_SRC, "tcp_src", "tp_src", | |
414 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 415 | MFM_FULLY, |
6a885fd0 BP |
416 | MFS_DECIMAL, |
417 | MFP_TCP, | |
28da1f8f BP |
418 | true, |
419 | NXM_OF_TCP_SRC, "NXM_OF_TCP_SRC", | |
36f3999b | 420 | OXM_OF_TCP_SRC, "OXM_OF_TCP_SRC", |
6a885fd0 BP |
421 | }, { |
422 | MFF_TCP_DST, "tcp_dst", "tp_dst", | |
423 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 424 | MFM_FULLY, |
6a885fd0 BP |
425 | MFS_DECIMAL, |
426 | MFP_TCP, | |
28da1f8f BP |
427 | true, |
428 | NXM_OF_TCP_DST, "NXM_OF_TCP_DST", | |
36f3999b | 429 | OXM_OF_TCP_DST, "OXM_OF_TCP_DST", |
6a885fd0 BP |
430 | }, |
431 | ||
432 | { | |
433 | MFF_UDP_SRC, "udp_src", NULL, | |
434 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 435 | MFM_FULLY, |
6a885fd0 BP |
436 | MFS_DECIMAL, |
437 | MFP_UDP, | |
28da1f8f BP |
438 | true, |
439 | NXM_OF_UDP_SRC, "NXM_OF_UDP_SRC", | |
36f3999b | 440 | OXM_OF_UDP_SRC, "OXM_OF_UDP_SRC", |
6a885fd0 BP |
441 | }, { |
442 | MFF_UDP_DST, "udp_dst", NULL, | |
443 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 444 | MFM_FULLY, |
6a885fd0 BP |
445 | MFS_DECIMAL, |
446 | MFP_UDP, | |
28da1f8f BP |
447 | true, |
448 | NXM_OF_UDP_DST, "NXM_OF_UDP_DST", | |
36f3999b | 449 | OXM_OF_UDP_DST, "OXM_OF_UDP_DST", |
6a885fd0 BP |
450 | }, |
451 | ||
452 | { | |
268a95e0 | 453 | MFF_ICMPV4_TYPE, "icmp_type", NULL, |
6a885fd0 | 454 | MF_FIELD_SIZES(u8), |
0bdc4bec | 455 | MFM_NONE, |
6a885fd0 | 456 | MFS_DECIMAL, |
268a95e0 | 457 | MFP_ICMPV4, |
28da1f8f BP |
458 | false, |
459 | NXM_OF_ICMP_TYPE, "NXM_OF_ICMP_TYPE", | |
36f3999b | 460 | OXM_OF_ICMPV4_TYPE, "OXM_OF_ICMPV4_TYPE", |
6a885fd0 | 461 | }, { |
268a95e0 | 462 | MFF_ICMPV4_CODE, "icmp_code", NULL, |
6a885fd0 | 463 | MF_FIELD_SIZES(u8), |
0bdc4bec | 464 | MFM_NONE, |
6a885fd0 | 465 | MFS_DECIMAL, |
268a95e0 | 466 | MFP_ICMPV4, |
28da1f8f BP |
467 | false, |
468 | NXM_OF_ICMP_CODE, "NXM_OF_ICMP_CODE", | |
36f3999b | 469 | OXM_OF_ICMPV4_CODE, "OXM_OF_ICMPV4_CODE", |
28da1f8f BP |
470 | }, |
471 | ||
472 | { | |
268a95e0 BP |
473 | MFF_ICMPV6_TYPE, "icmpv6_type", NULL, |
474 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 475 | MFM_NONE, |
268a95e0 BP |
476 | MFS_DECIMAL, |
477 | MFP_ICMPV6, | |
28da1f8f BP |
478 | false, |
479 | NXM_NX_ICMPV6_TYPE, "NXM_NX_ICMPV6_TYPE", | |
36f3999b | 480 | OXM_OF_ICMPV6_TYPE, "OXM_OF_ICMPV6_TYPE", |
268a95e0 BP |
481 | }, { |
482 | MFF_ICMPV6_CODE, "icmpv6_code", NULL, | |
483 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 484 | MFM_NONE, |
268a95e0 BP |
485 | MFS_DECIMAL, |
486 | MFP_ICMPV6, | |
28da1f8f BP |
487 | false, |
488 | NXM_NX_ICMPV6_CODE, "NXM_NX_ICMPV6_CODE", | |
36f3999b | 489 | OXM_OF_ICMPV6_CODE, "OXM_OF_ICMPV6_CODE", |
6a885fd0 BP |
490 | }, |
491 | ||
492 | /* ## ---- ## */ | |
493 | /* ## L"5" ## */ | |
494 | /* ## ---- ## */ | |
495 | ||
496 | { | |
497 | MFF_ND_TARGET, "nd_target", NULL, | |
498 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 499 | MFM_FULLY, |
6a885fd0 BP |
500 | MFS_IPV6, |
501 | MFP_ND, | |
28da1f8f BP |
502 | false, |
503 | NXM_NX_ND_TARGET, "NXM_NX_ND_TARGET", | |
36f3999b | 504 | OXM_OF_IPV6_ND_TARGET, "OXM_OF_IPV6_ND_TARGET", |
6a885fd0 BP |
505 | }, { |
506 | MFF_ND_SLL, "nd_sll", NULL, | |
507 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 508 | MFM_FULLY, |
6a885fd0 BP |
509 | MFS_ETHERNET, |
510 | MFP_ND_SOLICIT, | |
28da1f8f BP |
511 | false, |
512 | NXM_NX_ND_SLL, "NXM_NX_ND_SLL", | |
36f3999b | 513 | OXM_OF_IPV6_ND_SLL, "OXM_OF_IPV6_ND_SLL", |
6a885fd0 BP |
514 | }, { |
515 | MFF_ND_TLL, "nd_tll", NULL, | |
516 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 517 | MFM_FULLY, |
6a885fd0 BP |
518 | MFS_ETHERNET, |
519 | MFP_ND_ADVERT, | |
28da1f8f BP |
520 | false, |
521 | NXM_NX_ND_TLL, "NXM_NX_ND_TLL", | |
36f3999b | 522 | OXM_OF_IPV6_ND_TLL, "OXM_OF_IPV6_ND_TLL", |
6a885fd0 BP |
523 | } |
524 | }; | |
525 | ||
b5e5143b | 526 | /* Maps an NXM or OXM header value to an mf_field. */ |
28da1f8f | 527 | struct nxm_field { |
b5e5143b BP |
528 | struct hmap_node hmap_node; /* In 'all_fields' hmap. */ |
529 | uint32_t header; /* NXM or OXM header value. */ | |
28da1f8f BP |
530 | const struct mf_field *mf; |
531 | }; | |
532 | ||
b5e5143b BP |
533 | /* Contains 'struct nxm_field's. */ |
534 | static struct hmap all_fields = HMAP_INITIALIZER(&all_fields); | |
28da1f8f | 535 | |
816fd533 BP |
536 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
537 | * controller and so there's not much point in showing a lot of them. */ | |
538 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
539 | ||
b5e5143b BP |
540 | const struct mf_field *mf_from_nxm_header__(uint32_t header); |
541 | ||
6a885fd0 BP |
542 | /* Returns the field with the given 'id'. */ |
543 | const struct mf_field * | |
544 | mf_from_id(enum mf_field_id id) | |
545 | { | |
546 | assert((unsigned int) id < MFF_N_IDS); | |
547 | return &mf_fields[id]; | |
548 | } | |
549 | ||
550 | /* Returns the field with the given 'name', or a null pointer if no field has | |
551 | * that name. */ | |
552 | const struct mf_field * | |
553 | mf_from_name(const char *name) | |
554 | { | |
555 | static struct shash mf_by_name = SHASH_INITIALIZER(&mf_by_name); | |
556 | ||
557 | if (shash_is_empty(&mf_by_name)) { | |
558 | const struct mf_field *mf; | |
559 | ||
560 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { | |
561 | shash_add_once(&mf_by_name, mf->name, mf); | |
562 | if (mf->extra_name) { | |
563 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
564 | } | |
565 | } | |
566 | } | |
567 | ||
568 | return shash_find_data(&mf_by_name, name); | |
569 | } | |
570 | ||
28da1f8f | 571 | static void |
b5e5143b | 572 | add_nxm_field(uint32_t header, const struct mf_field *mf) |
28da1f8f BP |
573 | { |
574 | struct nxm_field *f; | |
575 | ||
576 | f = xmalloc(sizeof *f); | |
b5e5143b BP |
577 | hmap_insert(&all_fields, &f->hmap_node, hash_int(header, 0)); |
578 | f->header = header; | |
28da1f8f BP |
579 | f->mf = mf; |
580 | } | |
581 | ||
b5ae8913 SH |
582 | static void |
583 | nxm_init_add_field(const struct mf_field *mf, uint32_t header) | |
584 | { | |
b5e5143b BP |
585 | if (header) { |
586 | assert(!mf_from_nxm_header__(header)); | |
587 | add_nxm_field(header, mf); | |
588 | if (mf->maskable != MFM_NONE) { | |
589 | add_nxm_field(NXM_MAKE_WILD_HEADER(header), mf); | |
590 | } | |
b5ae8913 | 591 | } |
b5ae8913 | 592 | } |
b5ae8913 | 593 | |
28da1f8f BP |
594 | static void |
595 | nxm_init(void) | |
596 | { | |
597 | const struct mf_field *mf; | |
598 | ||
599 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { | |
b5ae8913 | 600 | nxm_init_add_field(mf, mf->nxm_header); |
b5e5143b BP |
601 | if (mf->oxm_header != mf->nxm_header) { |
602 | nxm_init_add_field(mf, mf->oxm_header); | |
603 | } | |
28da1f8f | 604 | } |
28da1f8f BP |
605 | } |
606 | ||
607 | const struct mf_field * | |
608 | mf_from_nxm_header(uint32_t header) | |
609 | { | |
b5e5143b | 610 | if (hmap_is_empty(&all_fields)) { |
28da1f8f BP |
611 | nxm_init(); |
612 | } | |
b5e5143b BP |
613 | return mf_from_nxm_header__(header); |
614 | } | |
28da1f8f | 615 | |
b5e5143b BP |
616 | const struct mf_field * |
617 | mf_from_nxm_header__(uint32_t header) | |
618 | { | |
619 | const struct nxm_field *f; | |
620 | ||
621 | HMAP_FOR_EACH_IN_BUCKET (f, hmap_node, hash_int(header, 0), &all_fields) { | |
622 | if (f->header == header) { | |
28da1f8f BP |
623 | return f->mf; |
624 | } | |
625 | } | |
626 | ||
627 | return NULL; | |
628 | } | |
629 | ||
6a885fd0 BP |
630 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
631 | * specifies at least one bit in the field. | |
632 | * | |
633 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
634 | * meets 'mf''s prerequisites. */ | |
635 | bool | |
636 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
637 | { | |
638 | switch (mf->id) { | |
6a885fd0 | 639 | case MFF_TUN_ID: |
4fe3445a PS |
640 | case MFF_TUN_SRC: |
641 | case MFF_TUN_DST: | |
642 | case MFF_TUN_TOS: | |
643 | case MFF_TUN_TTL: | |
644 | case MFF_TUN_FLAGS: | |
296e07ac | 645 | return !wc->masks.tunnel.tun_id; |
969fc56c | 646 | case MFF_METADATA: |
26720e24 | 647 | return !wc->masks.metadata; |
0bdc4bec | 648 | case MFF_IN_PORT: |
26720e24 | 649 | return !wc->masks.in_port; |
1b567fb9 AA |
650 | case MFF_SKB_PRIORITY: |
651 | return !wc->masks.skb_priority; | |
652 | case MFF_SKB_MARK: | |
653 | return !wc->masks.skb_mark; | |
0d7e2fe4 | 654 | CASE_MFF_REGS: |
26720e24 | 655 | return !wc->masks.regs[mf->id - MFF_REG0]; |
6a885fd0 | 656 | |
73c0ce34 | 657 | case MFF_ETH_SRC: |
26720e24 | 658 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 659 | case MFF_ETH_DST: |
26720e24 | 660 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 661 | case MFF_ETH_TYPE: |
26720e24 | 662 | return !wc->masks.dl_type; |
6a885fd0 | 663 | |
e878338b SH |
664 | case MFF_ARP_SHA: |
665 | case MFF_ND_SLL: | |
26720e24 | 666 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
667 | |
668 | case MFF_ARP_THA: | |
669 | case MFF_ND_TLL: | |
26720e24 | 670 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 671 | |
6a885fd0 | 672 | case MFF_VLAN_TCI: |
26720e24 | 673 | return !wc->masks.vlan_tci; |
441c57a9 | 674 | case MFF_DL_VLAN: |
26720e24 | 675 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 676 | case MFF_VLAN_VID: |
26720e24 | 677 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 678 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 679 | case MFF_VLAN_PCP: |
26720e24 | 680 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 BP |
681 | |
682 | case MFF_IPV4_SRC: | |
26720e24 | 683 | return !wc->masks.nw_src; |
6a885fd0 | 684 | case MFF_IPV4_DST: |
26720e24 | 685 | return !wc->masks.nw_dst; |
6a885fd0 BP |
686 | |
687 | case MFF_IPV6_SRC: | |
26720e24 | 688 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 689 | case MFF_IPV6_DST: |
26720e24 | 690 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 691 | |
32455024 | 692 | case MFF_IPV6_LABEL: |
26720e24 | 693 | return !wc->masks.ipv6_label; |
32455024 | 694 | |
851d3105 | 695 | case MFF_IP_PROTO: |
26720e24 | 696 | return !wc->masks.nw_proto; |
5d9499c4 | 697 | case MFF_IP_DSCP: |
26720e24 | 698 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 699 | case MFF_IP_ECN: |
26720e24 | 700 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 701 | case MFF_IP_TTL: |
26720e24 | 702 | return !wc->masks.nw_ttl; |
5d9499c4 | 703 | |
47284b1f | 704 | case MFF_ND_TARGET: |
26720e24 | 705 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 706 | |
7257b535 | 707 | case MFF_IP_FRAG: |
26720e24 | 708 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 709 | |
851d3105 | 710 | case MFF_ARP_OP: |
26720e24 | 711 | return !wc->masks.nw_proto; |
6a885fd0 | 712 | case MFF_ARP_SPA: |
26720e24 | 713 | return !wc->masks.nw_src; |
6a885fd0 | 714 | case MFF_ARP_TPA: |
26720e24 | 715 | return !wc->masks.nw_dst; |
6a885fd0 | 716 | |
73f33563 BP |
717 | case MFF_TCP_SRC: |
718 | case MFF_UDP_SRC: | |
719 | case MFF_ICMPV4_TYPE: | |
720 | case MFF_ICMPV6_TYPE: | |
26720e24 | 721 | return !wc->masks.tp_src; |
73f33563 BP |
722 | case MFF_TCP_DST: |
723 | case MFF_UDP_DST: | |
724 | case MFF_ICMPV4_CODE: | |
725 | case MFF_ICMPV6_CODE: | |
26720e24 | 726 | return !wc->masks.tp_dst; |
73f33563 | 727 | |
6a885fd0 BP |
728 | case MFF_N_IDS: |
729 | default: | |
730 | NOT_REACHED(); | |
731 | } | |
732 | } | |
733 | ||
734 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
735 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
736 | * purposes, or to 0 if it is wildcarded. | |
737 | * | |
738 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
739 | * meets 'mf''s prerequisites. */ | |
740 | void | |
741 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
742 | union mf_value *mask) | |
743 | { | |
fb15feb0 | 744 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
745 | } |
746 | ||
747 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
748 | * if the mask is valid, false otherwise. */ | |
749 | bool | |
750 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
751 | { | |
752 | switch (mf->maskable) { | |
753 | case MFM_NONE: | |
754 | return (is_all_zeros((const uint8_t *) mask, mf->n_bytes) || | |
755 | is_all_ones((const uint8_t *) mask, mf->n_bytes)); | |
756 | ||
757 | case MFM_FULLY: | |
758 | return true; | |
6a885fd0 BP |
759 | } |
760 | ||
761 | NOT_REACHED(); | |
762 | } | |
763 | ||
764 | static bool | |
765 | is_ip_any(const struct flow *flow) | |
766 | { | |
767 | return (flow->dl_type == htons(ETH_TYPE_IP) || | |
768 | flow->dl_type == htons(ETH_TYPE_IPV6)); | |
769 | } | |
770 | ||
771 | static bool | |
772 | is_icmpv4(const struct flow *flow) | |
773 | { | |
774 | return (flow->dl_type == htons(ETH_TYPE_IP) | |
775 | && flow->nw_proto == IPPROTO_ICMP); | |
776 | } | |
777 | ||
778 | static bool | |
779 | is_icmpv6(const struct flow *flow) | |
780 | { | |
781 | return (flow->dl_type == htons(ETH_TYPE_IPV6) | |
782 | && flow->nw_proto == IPPROTO_ICMPV6); | |
783 | } | |
784 | ||
785 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ | |
786 | bool | |
787 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
788 | { | |
789 | switch (mf->prereqs) { | |
790 | case MFP_NONE: | |
791 | return true; | |
792 | ||
793 | case MFP_ARP: | |
8087f5ff MM |
794 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
795 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
796 | case MFP_IPV4: |
797 | return flow->dl_type == htons(ETH_TYPE_IP); | |
798 | case MFP_IPV6: | |
799 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 800 | case MFP_VLAN_VID: |
5921e99a | 801 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
6a885fd0 BP |
802 | case MFP_IP_ANY: |
803 | return is_ip_any(flow); | |
804 | ||
805 | case MFP_TCP: | |
806 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP; | |
807 | case MFP_UDP: | |
808 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP; | |
268a95e0 BP |
809 | case MFP_ICMPV4: |
810 | return is_icmpv4(flow); | |
6a885fd0 BP |
811 | case MFP_ICMPV6: |
812 | return is_icmpv6(flow); | |
6a885fd0 BP |
813 | |
814 | case MFP_ND: | |
815 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
816 | && flow->tp_dst == htons(0) |
817 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
818 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
819 | case MFP_ND_SOLICIT: |
820 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
821 | && flow->tp_dst == htons(0) |
822 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
823 | case MFP_ND_ADVERT: |
824 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
825 | && flow->tp_dst == htons(0) |
826 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
827 | } |
828 | ||
829 | NOT_REACHED(); | |
830 | } | |
831 | ||
832 | /* Returns true if 'value' may be a valid value *as part of a masked match*, | |
833 | * false otherwise. | |
834 | * | |
835 | * A value is not rejected just because it is not valid for the field in | |
836 | * question, but only if it doesn't make sense to test the bits in question at | |
837 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
838 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
839 | * it is still legitimate to test just for those bits (see the documentation | |
840 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 841 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
842 | bool |
843 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
844 | { | |
845 | switch (mf->id) { | |
846 | case MFF_TUN_ID: | |
4fe3445a PS |
847 | case MFF_TUN_SRC: |
848 | case MFF_TUN_DST: | |
849 | case MFF_TUN_TOS: | |
850 | case MFF_TUN_TTL: | |
851 | case MFF_TUN_FLAGS: | |
969fc56c | 852 | case MFF_METADATA: |
6a885fd0 | 853 | case MFF_IN_PORT: |
1b567fb9 AA |
854 | case MFF_SKB_PRIORITY: |
855 | case MFF_SKB_MARK: | |
0d7e2fe4 | 856 | CASE_MFF_REGS: |
6a885fd0 BP |
857 | case MFF_ETH_SRC: |
858 | case MFF_ETH_DST: | |
859 | case MFF_ETH_TYPE: | |
860 | case MFF_VLAN_TCI: | |
861 | case MFF_IPV4_SRC: | |
862 | case MFF_IPV4_DST: | |
863 | case MFF_IPV6_SRC: | |
864 | case MFF_IPV6_DST: | |
865 | case MFF_IP_PROTO: | |
a61680c6 | 866 | case MFF_IP_TTL: |
6a885fd0 BP |
867 | case MFF_ARP_SPA: |
868 | case MFF_ARP_TPA: | |
869 | case MFF_ARP_SHA: | |
870 | case MFF_ARP_THA: | |
871 | case MFF_TCP_SRC: | |
872 | case MFF_TCP_DST: | |
873 | case MFF_UDP_SRC: | |
874 | case MFF_UDP_DST: | |
268a95e0 BP |
875 | case MFF_ICMPV4_TYPE: |
876 | case MFF_ICMPV4_CODE: | |
877 | case MFF_ICMPV6_TYPE: | |
878 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
879 | case MFF_ND_TARGET: |
880 | case MFF_ND_SLL: | |
881 | case MFF_ND_TLL: | |
882 | return true; | |
883 | ||
530180fd | 884 | case MFF_IP_DSCP: |
7257b535 | 885 | return !(value->u8 & ~IP_DSCP_MASK); |
530180fd JP |
886 | case MFF_IP_ECN: |
887 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 888 | case MFF_IP_FRAG: |
eadef313 | 889 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
6a885fd0 BP |
890 | |
891 | case MFF_ARP_OP: | |
892 | return !(value->be16 & htons(0xff00)); | |
893 | ||
441c57a9 | 894 | case MFF_DL_VLAN: |
6a885fd0 | 895 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
896 | case MFF_VLAN_VID: |
897 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 898 | |
441c57a9 | 899 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 900 | case MFF_VLAN_PCP: |
24016f5a | 901 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 902 | |
fa8223b7 JP |
903 | case MFF_IPV6_LABEL: |
904 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
905 | ||
6a885fd0 BP |
906 | case MFF_N_IDS: |
907 | default: | |
908 | NOT_REACHED(); | |
909 | } | |
910 | } | |
911 | ||
912 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
913 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
914 | void | |
915 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
916 | union mf_value *value) | |
917 | { | |
918 | switch (mf->id) { | |
919 | case MFF_TUN_ID: | |
296e07ac | 920 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 921 | break; |
4fe3445a PS |
922 | case MFF_TUN_SRC: |
923 | value->be32 = flow->tunnel.ip_src; | |
924 | break; | |
925 | case MFF_TUN_DST: | |
926 | value->be32 = flow->tunnel.ip_dst; | |
927 | break; | |
928 | case MFF_TUN_FLAGS: | |
929 | value->be16 = htons(flow->tunnel.flags); | |
930 | break; | |
931 | case MFF_TUN_TTL: | |
932 | value->u8 = flow->tunnel.ip_ttl; | |
933 | break; | |
934 | case MFF_TUN_TOS: | |
935 | value->u8 = flow->tunnel.ip_tos; | |
936 | break; | |
937 | ||
969fc56c JS |
938 | case MFF_METADATA: |
939 | value->be64 = flow->metadata; | |
940 | break; | |
6a885fd0 BP |
941 | |
942 | case MFF_IN_PORT: | |
943 | value->be16 = htons(flow->in_port); | |
944 | break; | |
945 | ||
1b567fb9 | 946 | case MFF_SKB_PRIORITY: |
a81f0a44 | 947 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
948 | break; |
949 | ||
950 | case MFF_SKB_MARK: | |
a81f0a44 | 951 | value->be32 = htonl(flow->skb_mark); |
1b567fb9 AA |
952 | break; |
953 | ||
0d7e2fe4 | 954 | CASE_MFF_REGS: |
2f98b0b7 | 955 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
956 | break; |
957 | ||
958 | case MFF_ETH_SRC: | |
959 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
960 | break; | |
961 | ||
962 | case MFF_ETH_DST: | |
963 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
964 | break; | |
965 | ||
966 | case MFF_ETH_TYPE: | |
967 | value->be16 = flow->dl_type; | |
968 | break; | |
969 | ||
970 | case MFF_VLAN_TCI: | |
971 | value->be16 = flow->vlan_tci; | |
972 | break; | |
973 | ||
441c57a9 | 974 | case MFF_DL_VLAN: |
6a885fd0 BP |
975 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
976 | break; | |
cc34bc8c BP |
977 | case MFF_VLAN_VID: |
978 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
979 | break; | |
6a885fd0 | 980 | |
441c57a9 | 981 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 982 | case MFF_VLAN_PCP: |
6a885fd0 BP |
983 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
984 | break; | |
985 | ||
986 | case MFF_IPV4_SRC: | |
987 | value->be32 = flow->nw_src; | |
988 | break; | |
989 | ||
990 | case MFF_IPV4_DST: | |
991 | value->be32 = flow->nw_dst; | |
992 | break; | |
993 | ||
994 | case MFF_IPV6_SRC: | |
995 | value->ipv6 = flow->ipv6_src; | |
996 | break; | |
997 | ||
998 | case MFF_IPV6_DST: | |
999 | value->ipv6 = flow->ipv6_dst; | |
1000 | break; | |
1001 | ||
fa8223b7 JP |
1002 | case MFF_IPV6_LABEL: |
1003 | value->be32 = flow->ipv6_label; | |
1004 | break; | |
1005 | ||
6a885fd0 BP |
1006 | case MFF_IP_PROTO: |
1007 | value->u8 = flow->nw_proto; | |
1008 | break; | |
1009 | ||
530180fd | 1010 | case MFF_IP_DSCP: |
eadef313 | 1011 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
1012 | break; |
1013 | ||
530180fd | 1014 | case MFF_IP_ECN: |
eadef313 | 1015 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
1016 | break; |
1017 | ||
a61680c6 JP |
1018 | case MFF_IP_TTL: |
1019 | value->u8 = flow->nw_ttl; | |
1020 | break; | |
1021 | ||
7257b535 | 1022 | case MFF_IP_FRAG: |
eadef313 | 1023 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
1024 | break; |
1025 | ||
1026 | case MFF_ARP_OP: | |
1027 | value->be16 = htons(flow->nw_proto); | |
1028 | break; | |
1029 | ||
1030 | case MFF_ARP_SPA: | |
1031 | value->be32 = flow->nw_src; | |
1032 | break; | |
1033 | ||
1034 | case MFF_ARP_TPA: | |
1035 | value->be32 = flow->nw_dst; | |
1036 | break; | |
1037 | ||
1038 | case MFF_ARP_SHA: | |
1039 | case MFF_ND_SLL: | |
1040 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
1041 | break; | |
1042 | ||
1043 | case MFF_ARP_THA: | |
1044 | case MFF_ND_TLL: | |
1045 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
1046 | break; | |
1047 | ||
1048 | case MFF_TCP_SRC: | |
6a885fd0 BP |
1049 | case MFF_UDP_SRC: |
1050 | value->be16 = flow->tp_src; | |
1051 | break; | |
1052 | ||
71baec06 | 1053 | case MFF_TCP_DST: |
6a885fd0 BP |
1054 | case MFF_UDP_DST: |
1055 | value->be16 = flow->tp_dst; | |
1056 | break; | |
1057 | ||
268a95e0 BP |
1058 | case MFF_ICMPV4_TYPE: |
1059 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
1060 | value->u8 = ntohs(flow->tp_src); |
1061 | break; | |
1062 | ||
268a95e0 BP |
1063 | case MFF_ICMPV4_CODE: |
1064 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1065 | value->u8 = ntohs(flow->tp_dst); |
1066 | break; | |
1067 | ||
1068 | case MFF_ND_TARGET: | |
1069 | value->ipv6 = flow->nd_target; | |
1070 | break; | |
1071 | ||
1072 | case MFF_N_IDS: | |
1073 | default: | |
1074 | NOT_REACHED(); | |
1075 | } | |
1076 | } | |
1077 | ||
81a76618 BP |
1078 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1079 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
1080 | * prerequisites. */ |
1081 | void | |
1082 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 1083 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
1084 | { |
1085 | switch (mf->id) { | |
1086 | case MFF_TUN_ID: | |
81a76618 | 1087 | match_set_tun_id(match, value->be64); |
6a885fd0 | 1088 | break; |
4fe3445a PS |
1089 | case MFF_TUN_SRC: |
1090 | match_set_tun_src(match, value->be32); | |
1091 | break; | |
1092 | case MFF_TUN_DST: | |
1093 | match_set_tun_dst(match, value->be32); | |
1094 | break; | |
1095 | case MFF_TUN_FLAGS: | |
1096 | match_set_tun_flags(match, ntohs(value->be16)); | |
1097 | break; | |
1098 | case MFF_TUN_TOS: | |
1099 | match_set_tun_tos(match, value->u8); | |
1100 | break; | |
1101 | case MFF_TUN_TTL: | |
1102 | match_set_tun_ttl(match, value->u8); | |
1103 | break; | |
1104 | ||
969fc56c | 1105 | case MFF_METADATA: |
81a76618 | 1106 | match_set_metadata(match, value->be64); |
969fc56c | 1107 | break; |
6a885fd0 BP |
1108 | |
1109 | case MFF_IN_PORT: | |
81a76618 | 1110 | match_set_in_port(match, ntohs(value->be16)); |
6a885fd0 BP |
1111 | break; |
1112 | ||
1b567fb9 AA |
1113 | case MFF_SKB_PRIORITY: |
1114 | match_set_skb_priority(match, ntohl(value->be32)); | |
1115 | break; | |
1116 | ||
1117 | case MFF_SKB_MARK: | |
1118 | match_set_skb_mark(match, ntohl(value->be32)); | |
1119 | break; | |
1120 | ||
0d7e2fe4 | 1121 | CASE_MFF_REGS: |
81a76618 | 1122 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 1123 | break; |
6a885fd0 BP |
1124 | |
1125 | case MFF_ETH_SRC: | |
81a76618 | 1126 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
1127 | break; |
1128 | ||
1129 | case MFF_ETH_DST: | |
81a76618 | 1130 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
1131 | break; |
1132 | ||
1133 | case MFF_ETH_TYPE: | |
81a76618 | 1134 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
1135 | break; |
1136 | ||
1137 | case MFF_VLAN_TCI: | |
81a76618 | 1138 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
1139 | break; |
1140 | ||
441c57a9 | 1141 | case MFF_DL_VLAN: |
81a76618 | 1142 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 1143 | break; |
cc34bc8c | 1144 | case MFF_VLAN_VID: |
81a76618 | 1145 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 1146 | break; |
6a885fd0 | 1147 | |
441c57a9 | 1148 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1149 | case MFF_VLAN_PCP: |
81a76618 | 1150 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
1151 | break; |
1152 | ||
1153 | case MFF_IPV4_SRC: | |
81a76618 | 1154 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1155 | break; |
1156 | ||
1157 | case MFF_IPV4_DST: | |
81a76618 | 1158 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1159 | break; |
1160 | ||
1161 | case MFF_IPV6_SRC: | |
81a76618 | 1162 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
1163 | break; |
1164 | ||
1165 | case MFF_IPV6_DST: | |
81a76618 | 1166 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
1167 | break; |
1168 | ||
fa8223b7 | 1169 | case MFF_IPV6_LABEL: |
81a76618 | 1170 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
1171 | break; |
1172 | ||
6a885fd0 | 1173 | case MFF_IP_PROTO: |
81a76618 | 1174 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
1175 | break; |
1176 | ||
530180fd | 1177 | case MFF_IP_DSCP: |
81a76618 | 1178 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
1179 | break; |
1180 | ||
1181 | case MFF_IP_ECN: | |
81a76618 | 1182 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
1183 | break; |
1184 | ||
a61680c6 | 1185 | case MFF_IP_TTL: |
81a76618 | 1186 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
1187 | break; |
1188 | ||
7257b535 | 1189 | case MFF_IP_FRAG: |
81a76618 | 1190 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
1191 | break; |
1192 | ||
6a885fd0 | 1193 | case MFF_ARP_OP: |
81a76618 | 1194 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
1195 | break; |
1196 | ||
1197 | case MFF_ARP_SPA: | |
81a76618 | 1198 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1199 | break; |
1200 | ||
1201 | case MFF_ARP_TPA: | |
81a76618 | 1202 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1203 | break; |
1204 | ||
1205 | case MFF_ARP_SHA: | |
1206 | case MFF_ND_SLL: | |
81a76618 | 1207 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
1208 | break; |
1209 | ||
1210 | case MFF_ARP_THA: | |
1211 | case MFF_ND_TLL: | |
81a76618 | 1212 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
1213 | break; |
1214 | ||
1215 | case MFF_TCP_SRC: | |
6a885fd0 | 1216 | case MFF_UDP_SRC: |
81a76618 | 1217 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
1218 | break; |
1219 | ||
71baec06 | 1220 | case MFF_TCP_DST: |
6a885fd0 | 1221 | case MFF_UDP_DST: |
81a76618 | 1222 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
1223 | break; |
1224 | ||
268a95e0 BP |
1225 | case MFF_ICMPV4_TYPE: |
1226 | case MFF_ICMPV6_TYPE: | |
81a76618 | 1227 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
1228 | break; |
1229 | ||
268a95e0 BP |
1230 | case MFF_ICMPV4_CODE: |
1231 | case MFF_ICMPV6_CODE: | |
81a76618 | 1232 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
1233 | break; |
1234 | ||
1235 | case MFF_ND_TARGET: | |
81a76618 | 1236 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
1237 | break; |
1238 | ||
1239 | case MFF_N_IDS: | |
1240 | default: | |
1241 | NOT_REACHED(); | |
1242 | } | |
1243 | } | |
1244 | ||
81a76618 BP |
1245 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1246 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
28da1f8f BP |
1247 | * prerequisites. */ |
1248 | void | |
1249 | mf_set_flow_value(const struct mf_field *mf, | |
1250 | const union mf_value *value, struct flow *flow) | |
1251 | { | |
1252 | switch (mf->id) { | |
1253 | case MFF_TUN_ID: | |
296e07ac | 1254 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 1255 | break; |
4fe3445a PS |
1256 | case MFF_TUN_SRC: |
1257 | flow->tunnel.ip_src = value->be32; | |
1258 | break; | |
1259 | case MFF_TUN_DST: | |
1260 | flow->tunnel.ip_dst = value->be32; | |
1261 | break; | |
1262 | case MFF_TUN_FLAGS: | |
1263 | flow->tunnel.flags = ntohs(value->be16); | |
1264 | break; | |
1265 | case MFF_TUN_TOS: | |
1266 | flow->tunnel.ip_tos = value->u8; | |
1267 | break; | |
1268 | case MFF_TUN_TTL: | |
1269 | flow->tunnel.ip_ttl = value->u8; | |
1270 | break; | |
1271 | ||
969fc56c JS |
1272 | case MFF_METADATA: |
1273 | flow->metadata = value->be64; | |
1274 | break; | |
28da1f8f BP |
1275 | |
1276 | case MFF_IN_PORT: | |
1277 | flow->in_port = ntohs(value->be16); | |
1278 | break; | |
1279 | ||
1b567fb9 AA |
1280 | case MFF_SKB_PRIORITY: |
1281 | flow->skb_priority = ntohl(value->be32); | |
1282 | break; | |
1283 | ||
1284 | case MFF_SKB_MARK: | |
1285 | flow->skb_mark = ntohl(value->be32); | |
1286 | break; | |
1287 | ||
0d7e2fe4 | 1288 | CASE_MFF_REGS: |
28da1f8f BP |
1289 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
1290 | break; | |
28da1f8f BP |
1291 | |
1292 | case MFF_ETH_SRC: | |
1293 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
1294 | break; | |
1295 | ||
1296 | case MFF_ETH_DST: | |
b5a36e38 | 1297 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
1298 | break; |
1299 | ||
1300 | case MFF_ETH_TYPE: | |
1301 | flow->dl_type = value->be16; | |
1302 | break; | |
1303 | ||
1304 | case MFF_VLAN_TCI: | |
1305 | flow->vlan_tci = value->be16; | |
1306 | break; | |
1307 | ||
441c57a9 | 1308 | case MFF_DL_VLAN: |
fb0451d9 | 1309 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 1310 | break; |
cc34bc8c BP |
1311 | case MFF_VLAN_VID: |
1312 | flow_set_vlan_vid(flow, value->be16); | |
1313 | break; | |
28da1f8f | 1314 | |
441c57a9 | 1315 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1316 | case MFF_VLAN_PCP: |
28da1f8f BP |
1317 | flow_set_vlan_pcp(flow, value->u8); |
1318 | break; | |
1319 | ||
1320 | case MFF_IPV4_SRC: | |
1321 | flow->nw_src = value->be32; | |
1322 | break; | |
1323 | ||
1324 | case MFF_IPV4_DST: | |
1325 | flow->nw_dst = value->be32; | |
1326 | break; | |
1327 | ||
1328 | case MFF_IPV6_SRC: | |
1329 | flow->ipv6_src = value->ipv6; | |
1330 | break; | |
1331 | ||
1332 | case MFF_IPV6_DST: | |
1333 | flow->ipv6_dst = value->ipv6; | |
1334 | break; | |
1335 | ||
1336 | case MFF_IPV6_LABEL: | |
1337 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1338 | break; | |
1339 | ||
1340 | case MFF_IP_PROTO: | |
1341 | flow->nw_proto = value->u8; | |
1342 | break; | |
1343 | ||
1344 | case MFF_IP_DSCP: | |
1345 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1346 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1347 | break; | |
1348 | ||
1349 | case MFF_IP_ECN: | |
1350 | flow->nw_tos &= ~IP_ECN_MASK; | |
1351 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1352 | break; | |
1353 | ||
1354 | case MFF_IP_TTL: | |
1355 | flow->nw_ttl = value->u8; | |
1356 | break; | |
1357 | ||
1358 | case MFF_IP_FRAG: | |
1359 | flow->nw_frag &= value->u8; | |
1360 | break; | |
1361 | ||
1362 | case MFF_ARP_OP: | |
1363 | flow->nw_proto = ntohs(value->be16); | |
1364 | break; | |
1365 | ||
1366 | case MFF_ARP_SPA: | |
1367 | flow->nw_src = value->be32; | |
1368 | break; | |
1369 | ||
1370 | case MFF_ARP_TPA: | |
1371 | flow->nw_dst = value->be32; | |
1372 | break; | |
1373 | ||
1374 | case MFF_ARP_SHA: | |
1375 | case MFF_ND_SLL: | |
1376 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1377 | break; | |
1378 | ||
1379 | case MFF_ARP_THA: | |
1380 | case MFF_ND_TLL: | |
1381 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1382 | break; | |
1383 | ||
1384 | case MFF_TCP_SRC: | |
1385 | case MFF_UDP_SRC: | |
1386 | flow->tp_src = value->be16; | |
1387 | break; | |
1388 | ||
1389 | case MFF_TCP_DST: | |
1390 | case MFF_UDP_DST: | |
1391 | flow->tp_dst = value->be16; | |
1392 | break; | |
1393 | ||
1394 | case MFF_ICMPV4_TYPE: | |
1395 | case MFF_ICMPV6_TYPE: | |
1396 | flow->tp_src = htons(value->u8); | |
1397 | break; | |
1398 | ||
1399 | case MFF_ICMPV4_CODE: | |
1400 | case MFF_ICMPV6_CODE: | |
1401 | flow->tp_dst = htons(value->u8); | |
1402 | break; | |
1403 | ||
1404 | case MFF_ND_TARGET: | |
1405 | flow->nd_target = value->ipv6; | |
1406 | break; | |
1407 | ||
1408 | case MFF_N_IDS: | |
1409 | default: | |
1410 | NOT_REACHED(); | |
1411 | } | |
1412 | } | |
1413 | ||
ccbe50f8 BP |
1414 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1415 | * | |
1416 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1417 | * prerequisites. */ | |
1418 | bool | |
1419 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1420 | { | |
1421 | union mf_value value; | |
1422 | ||
1423 | mf_get_value(mf, flow, &value); | |
1424 | return is_all_zeros((const uint8_t *) &value, mf->n_bytes); | |
1425 | } | |
1426 | ||
81a76618 | 1427 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1428 | * |
81a76618 | 1429 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1430 | * prerequisites. */ |
1431 | void | |
81a76618 | 1432 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1433 | { |
1434 | switch (mf->id) { | |
1435 | case MFF_TUN_ID: | |
81a76618 | 1436 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1437 | break; |
4fe3445a PS |
1438 | case MFF_TUN_SRC: |
1439 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1440 | break; | |
1441 | case MFF_TUN_DST: | |
1442 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1443 | break; | |
1444 | case MFF_TUN_FLAGS: | |
1445 | match_set_tun_flags_masked(match, 0, 0); | |
1446 | break; | |
1447 | case MFF_TUN_TOS: | |
1448 | match_set_tun_tos_masked(match, 0, 0); | |
1449 | break; | |
1450 | case MFF_TUN_TTL: | |
1451 | match_set_tun_ttl_masked(match, 0, 0); | |
1452 | break; | |
1453 | ||
969fc56c | 1454 | case MFF_METADATA: |
81a76618 | 1455 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
6a885fd0 BP |
1456 | |
1457 | case MFF_IN_PORT: | |
81a76618 BP |
1458 | match->flow.in_port = 0; |
1459 | match->wc.masks.in_port = 0; | |
6a885fd0 BP |
1460 | break; |
1461 | ||
1b567fb9 AA |
1462 | case MFF_SKB_PRIORITY: |
1463 | match->flow.skb_priority = 0; | |
1464 | match->wc.masks.skb_priority = 0; | |
1465 | break; | |
1466 | ||
1467 | case MFF_SKB_MARK: | |
1468 | match->flow.skb_mark = 0; | |
1469 | match->wc.masks.skb_mark = 0; | |
1470 | break; | |
1471 | ||
0d7e2fe4 | 1472 | CASE_MFF_REGS: |
81a76618 | 1473 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1474 | break; |
6a885fd0 BP |
1475 | |
1476 | case MFF_ETH_SRC: | |
81a76618 BP |
1477 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1478 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1479 | break; |
1480 | ||
1481 | case MFF_ETH_DST: | |
81a76618 BP |
1482 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1483 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1484 | break; |
1485 | ||
1486 | case MFF_ETH_TYPE: | |
81a76618 BP |
1487 | match->flow.dl_type = htons(0); |
1488 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1489 | break; |
1490 | ||
1491 | case MFF_VLAN_TCI: | |
81a76618 | 1492 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1493 | break; |
1494 | ||
441c57a9 | 1495 | case MFF_DL_VLAN: |
cc34bc8c | 1496 | case MFF_VLAN_VID: |
81a76618 | 1497 | match_set_any_vid(match); |
6a885fd0 BP |
1498 | break; |
1499 | ||
441c57a9 | 1500 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1501 | case MFF_VLAN_PCP: |
81a76618 | 1502 | match_set_any_pcp(match); |
6a885fd0 BP |
1503 | break; |
1504 | ||
1505 | case MFF_IPV4_SRC: | |
1506 | case MFF_ARP_SPA: | |
81a76618 | 1507 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1508 | break; |
1509 | ||
1510 | case MFF_IPV4_DST: | |
1511 | case MFF_ARP_TPA: | |
81a76618 | 1512 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1513 | break; |
1514 | ||
1515 | case MFF_IPV6_SRC: | |
81a76618 BP |
1516 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1517 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1518 | break; |
1519 | ||
1520 | case MFF_IPV6_DST: | |
81a76618 BP |
1521 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1522 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1523 | break; |
1524 | ||
fa8223b7 | 1525 | case MFF_IPV6_LABEL: |
81a76618 BP |
1526 | match->wc.masks.ipv6_label = htonl(0); |
1527 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1528 | break; |
1529 | ||
6a885fd0 | 1530 | case MFF_IP_PROTO: |
81a76618 BP |
1531 | match->wc.masks.nw_proto = 0; |
1532 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1533 | break; |
1534 | ||
530180fd | 1535 | case MFF_IP_DSCP: |
81a76618 BP |
1536 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1537 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1538 | break; |
1539 | ||
530180fd | 1540 | case MFF_IP_ECN: |
81a76618 BP |
1541 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1542 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1543 | break; |
1544 | ||
a61680c6 | 1545 | case MFF_IP_TTL: |
81a76618 BP |
1546 | match->wc.masks.nw_ttl = 0; |
1547 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1548 | break; |
1549 | ||
7257b535 | 1550 | case MFF_IP_FRAG: |
81a76618 BP |
1551 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1552 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1553 | break; |
1554 | ||
1555 | case MFF_ARP_OP: | |
81a76618 BP |
1556 | match->wc.masks.nw_proto = 0; |
1557 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1558 | break; |
1559 | ||
1560 | case MFF_ARP_SHA: | |
1561 | case MFF_ND_SLL: | |
81a76618 BP |
1562 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1563 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1564 | break; |
1565 | ||
1566 | case MFF_ARP_THA: | |
1567 | case MFF_ND_TLL: | |
81a76618 BP |
1568 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1569 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1570 | break; |
1571 | ||
1572 | case MFF_TCP_SRC: | |
1573 | case MFF_UDP_SRC: | |
268a95e0 BP |
1574 | case MFF_ICMPV4_TYPE: |
1575 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1576 | match->wc.masks.tp_src = htons(0); |
1577 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1578 | break; |
1579 | ||
1580 | case MFF_TCP_DST: | |
1581 | case MFF_UDP_DST: | |
268a95e0 BP |
1582 | case MFF_ICMPV4_CODE: |
1583 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1584 | match->wc.masks.tp_dst = htons(0); |
1585 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1586 | break; |
1587 | ||
1588 | case MFF_ND_TARGET: | |
81a76618 BP |
1589 | memset(&match->wc.masks.nd_target, 0, |
1590 | sizeof match->wc.masks.nd_target); | |
1591 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1592 | break; |
1593 | ||
1594 | case MFF_N_IDS: | |
1595 | default: | |
1596 | NOT_REACHED(); | |
1597 | } | |
1598 | } | |
1599 | ||
81a76618 | 1600 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1601 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1602 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1603 | * 0-bit indicating a don't-care. | |
1604 | * | |
1605 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1606 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1607 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1608 | * |
1609 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1610 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
6a885fd0 BP |
1611 | void |
1612 | mf_set(const struct mf_field *mf, | |
1613 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1614 | struct match *match) |
6a885fd0 BP |
1615 | { |
1616 | if (!mask || is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1617 | mf_set_value(mf, value, match); |
6a885fd0 BP |
1618 | return; |
1619 | } else if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1620 | mf_set_wild(mf, match); |
6a885fd0 BP |
1621 | return; |
1622 | } | |
1623 | ||
1624 | switch (mf->id) { | |
1625 | case MFF_IN_PORT: | |
1b567fb9 AA |
1626 | case MFF_SKB_MARK: |
1627 | case MFF_SKB_PRIORITY: | |
6a885fd0 | 1628 | case MFF_ETH_TYPE: |
441c57a9 BP |
1629 | case MFF_DL_VLAN: |
1630 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1631 | case MFF_VLAN_PCP: |
6a885fd0 | 1632 | case MFF_IP_PROTO: |
a61680c6 | 1633 | case MFF_IP_TTL: |
530180fd JP |
1634 | case MFF_IP_DSCP: |
1635 | case MFF_IP_ECN: | |
6a885fd0 | 1636 | case MFF_ARP_OP: |
268a95e0 BP |
1637 | case MFF_ICMPV4_TYPE: |
1638 | case MFF_ICMPV4_CODE: | |
1639 | case MFF_ICMPV6_TYPE: | |
1640 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1641 | NOT_REACHED(); |
1642 | ||
1643 | case MFF_TUN_ID: | |
81a76618 | 1644 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1645 | break; |
4fe3445a PS |
1646 | case MFF_TUN_SRC: |
1647 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1648 | break; | |
1649 | case MFF_TUN_DST: | |
1650 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1651 | break; | |
1652 | case MFF_TUN_FLAGS: | |
1653 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1654 | break; | |
1655 | case MFF_TUN_TTL: | |
1656 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1657 | break; | |
1658 | case MFF_TUN_TOS: | |
1659 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1660 | break; | |
1661 | ||
969fc56c | 1662 | case MFF_METADATA: |
81a76618 | 1663 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1664 | break; |
6a885fd0 | 1665 | |
0d7e2fe4 | 1666 | CASE_MFF_REGS: |
81a76618 BP |
1667 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1668 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 BP |
1669 | break; |
1670 | ||
1671 | case MFF_ETH_DST: | |
81a76618 | 1672 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1673 | break; |
1674 | ||
1675 | case MFF_ETH_SRC: | |
81a76618 | 1676 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1677 | break; |
1678 | ||
e878338b SH |
1679 | case MFF_ARP_SHA: |
1680 | case MFF_ND_SLL: | |
81a76618 | 1681 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1682 | break; |
1683 | ||
1684 | case MFF_ARP_THA: | |
1685 | case MFF_ND_TLL: | |
81a76618 | 1686 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1687 | break; |
1688 | ||
6a885fd0 | 1689 | case MFF_VLAN_TCI: |
81a76618 | 1690 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1691 | break; |
1692 | ||
cc34bc8c | 1693 | case MFF_VLAN_VID: |
81a76618 | 1694 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1695 | break; |
1696 | ||
6a885fd0 | 1697 | case MFF_IPV4_SRC: |
81a76618 | 1698 | match_set_nw_src_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1699 | break; |
1700 | ||
1701 | case MFF_IPV4_DST: | |
81a76618 | 1702 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1703 | break; |
1704 | ||
1705 | case MFF_IPV6_SRC: | |
81a76618 | 1706 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1707 | break; |
1708 | ||
1709 | case MFF_IPV6_DST: | |
81a76618 | 1710 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1711 | break; |
1712 | ||
32455024 SH |
1713 | case MFF_IPV6_LABEL: |
1714 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1715 | mf_set_value(mf, value, match); |
32455024 | 1716 | } else { |
81a76618 | 1717 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1718 | } |
1719 | break; | |
1720 | ||
47284b1f | 1721 | case MFF_ND_TARGET: |
81a76618 | 1722 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1723 | break; |
1724 | ||
7257b535 | 1725 | case MFF_IP_FRAG: |
81a76618 | 1726 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1727 | break; |
1728 | ||
6a885fd0 | 1729 | case MFF_ARP_SPA: |
81a76618 | 1730 | match_set_nw_src_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1731 | break; |
1732 | ||
1733 | case MFF_ARP_TPA: | |
81a76618 | 1734 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1735 | break; |
1736 | ||
73f33563 BP |
1737 | case MFF_TCP_SRC: |
1738 | case MFF_UDP_SRC: | |
81a76618 | 1739 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1740 | break; |
1741 | ||
1742 | case MFF_TCP_DST: | |
1743 | case MFF_UDP_DST: | |
81a76618 | 1744 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1745 | break; |
1746 | ||
6a885fd0 BP |
1747 | case MFF_N_IDS: |
1748 | default: | |
1749 | NOT_REACHED(); | |
1750 | } | |
1751 | } | |
1752 | ||
816fd533 BP |
1753 | static enum ofperr |
1754 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1755 | const char *type) | |
6a885fd0 | 1756 | { |
816fd533 BP |
1757 | if (!sf->field) { |
1758 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
1759 | } else if (!sf->n_bits) { | |
1760 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
1761 | } else if (sf->ofs >= sf->field->n_bits) { | |
1762 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1763 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
1764 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { | |
1765 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1766 | "of %s field %s", sf->ofs, sf->n_bits, | |
1767 | sf->field->n_bits, type, sf->field->name); | |
1768 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { | |
1769 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1770 | type, sf->field->name); | |
6a885fd0 | 1771 | } else { |
816fd533 BP |
1772 | return 0; |
1773 | } | |
6a885fd0 | 1774 | |
816fd533 BP |
1775 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1776 | } | |
6a885fd0 | 1777 | |
816fd533 BP |
1778 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1779 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1780 | * ofp_mkerr()). */ | |
1781 | enum ofperr | |
1782 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1783 | { | |
1784 | return mf_check__(sf, flow, "source"); | |
1785 | } | |
6a885fd0 | 1786 | |
816fd533 BP |
1787 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1788 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1789 | * ofp_mkerr()). */ | |
1790 | enum ofperr | |
1791 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1792 | { | |
1793 | int error = mf_check__(sf, flow, "destination"); | |
1794 | if (!error && !sf->field->writable) { | |
1795 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1796 | sf->field->name); | |
1797 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6a885fd0 | 1798 | } |
816fd533 | 1799 | return error; |
6a885fd0 BP |
1800 | } |
1801 | ||
81a76618 | 1802 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1803 | * 'value' and 'mask', respectively. */ |
1804 | void | |
81a76618 | 1805 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1806 | union mf_value *value, union mf_value *mask) |
1807 | { | |
81a76618 BP |
1808 | mf_get_value(mf, &match->flow, value); |
1809 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1810 | } |
1811 | ||
1812 | /* Assigns a random value for field 'mf' to 'value'. */ | |
1813 | void | |
1814 | mf_random_value(const struct mf_field *mf, union mf_value *value) | |
1815 | { | |
1816 | random_bytes(value, mf->n_bytes); | |
1817 | ||
1818 | switch (mf->id) { | |
1819 | case MFF_TUN_ID: | |
4fe3445a PS |
1820 | case MFF_TUN_SRC: |
1821 | case MFF_TUN_DST: | |
1822 | case MFF_TUN_TOS: | |
1823 | case MFF_TUN_TTL: | |
1824 | case MFF_TUN_FLAGS: | |
969fc56c | 1825 | case MFF_METADATA: |
6a885fd0 | 1826 | case MFF_IN_PORT: |
1b567fb9 AA |
1827 | case MFF_SKB_MARK: |
1828 | case MFF_SKB_PRIORITY: | |
0d7e2fe4 | 1829 | CASE_MFF_REGS: |
6a885fd0 BP |
1830 | case MFF_ETH_SRC: |
1831 | case MFF_ETH_DST: | |
1832 | case MFF_ETH_TYPE: | |
1833 | case MFF_VLAN_TCI: | |
1834 | case MFF_IPV4_SRC: | |
1835 | case MFF_IPV4_DST: | |
1836 | case MFF_IPV6_SRC: | |
1837 | case MFF_IPV6_DST: | |
1838 | case MFF_IP_PROTO: | |
a61680c6 | 1839 | case MFF_IP_TTL: |
6a885fd0 BP |
1840 | case MFF_ARP_SPA: |
1841 | case MFF_ARP_TPA: | |
1842 | case MFF_ARP_SHA: | |
1843 | case MFF_ARP_THA: | |
1844 | case MFF_TCP_SRC: | |
1845 | case MFF_TCP_DST: | |
1846 | case MFF_UDP_SRC: | |
1847 | case MFF_UDP_DST: | |
268a95e0 BP |
1848 | case MFF_ICMPV4_TYPE: |
1849 | case MFF_ICMPV4_CODE: | |
1850 | case MFF_ICMPV6_TYPE: | |
1851 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1852 | case MFF_ND_TARGET: |
1853 | case MFF_ND_SLL: | |
1854 | case MFF_ND_TLL: | |
1855 | break; | |
1856 | ||
fa8223b7 JP |
1857 | case MFF_IPV6_LABEL: |
1858 | value->be32 &= ~htonl(IPV6_LABEL_MASK); | |
1859 | break; | |
1860 | ||
530180fd JP |
1861 | case MFF_IP_DSCP: |
1862 | value->u8 &= IP_DSCP_MASK; | |
1863 | break; | |
1864 | ||
1865 | case MFF_IP_ECN: | |
1866 | value->u8 &= IP_ECN_MASK; | |
6a885fd0 BP |
1867 | break; |
1868 | ||
7257b535 | 1869 | case MFF_IP_FRAG: |
eadef313 | 1870 | value->u8 &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
1871 | break; |
1872 | ||
6a885fd0 BP |
1873 | case MFF_ARP_OP: |
1874 | value->be16 &= htons(0xff); | |
1875 | break; | |
1876 | ||
441c57a9 | 1877 | case MFF_DL_VLAN: |
6a885fd0 BP |
1878 | value->be16 &= htons(VLAN_VID_MASK); |
1879 | break; | |
cc34bc8c BP |
1880 | case MFF_VLAN_VID: |
1881 | value->be16 &= htons(VLAN_VID_MASK | VLAN_CFI); | |
1882 | break; | |
6a885fd0 | 1883 | |
441c57a9 | 1884 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1885 | case MFF_VLAN_PCP: |
6a885fd0 BP |
1886 | value->u8 &= 0x07; |
1887 | break; | |
1888 | ||
1889 | case MFF_N_IDS: | |
1890 | default: | |
1891 | NOT_REACHED(); | |
1892 | } | |
1893 | } | |
1894 | ||
1895 | static char * | |
1896 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1897 | uint8_t *valuep, uint8_t *maskp) | |
1898 | { | |
1899 | unsigned long long int integer, mask; | |
1900 | char *tail; | |
1901 | int i; | |
1902 | ||
1903 | errno = 0; | |
1904 | integer = strtoull(s, &tail, 0); | |
1905 | if (errno || (*tail != '\0' && *tail != '/')) { | |
1906 | goto syntax_error; | |
1907 | } | |
1908 | ||
1909 | if (*tail == '/') { | |
1910 | mask = strtoull(tail + 1, &tail, 0); | |
1911 | if (errno || *tail != '\0') { | |
1912 | goto syntax_error; | |
1913 | } | |
1914 | } else { | |
1915 | mask = ULLONG_MAX; | |
1916 | } | |
1917 | ||
1918 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
1919 | valuep[i] = integer; | |
1920 | maskp[i] = mask; | |
1921 | integer >>= 8; | |
1922 | mask >>= 8; | |
1923 | } | |
1924 | if (integer) { | |
1925 | return xasprintf("%s: value too large for %u-byte field %s", | |
1926 | s, mf->n_bytes, mf->name); | |
1927 | } | |
1928 | return NULL; | |
1929 | ||
1930 | syntax_error: | |
1931 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
1932 | } | |
1933 | ||
1934 | static char * | |
1935 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1936 | uint8_t mac[ETH_ADDR_LEN], | |
1937 | uint8_t mask[ETH_ADDR_LEN]) | |
1938 | { | |
1939 | assert(mf->n_bytes == ETH_ADDR_LEN); | |
1940 | ||
1941 | switch (sscanf(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT, | |
1942 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask))){ | |
1943 | case ETH_ADDR_SCAN_COUNT * 2: | |
1944 | return NULL; | |
1945 | ||
1946 | case ETH_ADDR_SCAN_COUNT: | |
1947 | memset(mask, 0xff, ETH_ADDR_LEN); | |
1948 | return NULL; | |
1949 | ||
1950 | default: | |
1951 | return xasprintf("%s: invalid Ethernet address", s); | |
1952 | } | |
1953 | } | |
1954 | ||
1955 | static char * | |
1956 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1957 | ovs_be32 *ip, ovs_be32 *mask) | |
1958 | { | |
1959 | int prefix; | |
1960 | ||
1961 | assert(mf->n_bytes == sizeof *ip); | |
1962 | ||
1963 | if (sscanf(s, IP_SCAN_FMT"/"IP_SCAN_FMT, | |
1964 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask)) == IP_SCAN_COUNT * 2) { | |
1965 | /* OK. */ | |
1966 | } else if (sscanf(s, IP_SCAN_FMT"/%d", | |
1967 | IP_SCAN_ARGS(ip), &prefix) == IP_SCAN_COUNT + 1) { | |
1968 | if (prefix <= 0 || prefix > 32) { | |
1969 | return xasprintf("%s: network prefix bits not between 1 and " | |
1970 | "32", s); | |
1971 | } else if (prefix == 32) { | |
1972 | *mask = htonl(UINT32_MAX); | |
1973 | } else { | |
1974 | *mask = htonl(((1u << prefix) - 1) << (32 - prefix)); | |
1975 | } | |
1976 | } else if (sscanf(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip)) == IP_SCAN_COUNT) { | |
1977 | *mask = htonl(UINT32_MAX); | |
1978 | } else { | |
1979 | return xasprintf("%s: invalid IP address", s); | |
1980 | } | |
1981 | return NULL; | |
1982 | } | |
1983 | ||
1984 | static char * | |
1985 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1986 | struct in6_addr *value, struct in6_addr *mask) | |
1987 | { | |
1988 | char *str = xstrdup(s); | |
1989 | char *save_ptr = NULL; | |
1990 | const char *name, *netmask; | |
1991 | int retval; | |
1992 | ||
1993 | assert(mf->n_bytes == sizeof *value); | |
1994 | ||
1995 | name = strtok_r(str, "/", &save_ptr); | |
1996 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1997 | if (retval) { | |
1998 | char *err; | |
1999 | ||
2000 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
2001 | free(str); | |
2002 | ||
2003 | return err; | |
2004 | } | |
2005 | ||
2006 | netmask = strtok_r(NULL, "/", &save_ptr); | |
2007 | if (netmask) { | |
ff0b06ee BP |
2008 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
2009 | int prefix = atoi(netmask); | |
2010 | if (prefix <= 0 || prefix > 128) { | |
2011 | free(str); | |
2012 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
2013 | } else { | |
2014 | *mask = ipv6_create_mask(prefix); | |
2015 | } | |
6a885fd0 BP |
2016 | } |
2017 | } else { | |
2018 | *mask = in6addr_exact; | |
2019 | } | |
2020 | free(str); | |
2021 | ||
2022 | return NULL; | |
2023 | } | |
2024 | ||
2025 | static char * | |
2026 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
2027 | ovs_be16 *valuep, ovs_be16 *maskp) | |
2028 | { | |
2029 | uint16_t port; | |
2030 | ||
2031 | assert(mf->n_bytes == sizeof(ovs_be16)); | |
05dddbac JP |
2032 | if (*s == '-') { |
2033 | return xasprintf("%s: negative values not supported for %s", | |
2034 | s, mf->name); | |
2035 | } else if (ofputil_port_from_string(s, &port)) { | |
6a885fd0 BP |
2036 | *valuep = htons(port); |
2037 | *maskp = htons(UINT16_MAX); | |
2038 | return NULL; | |
2039 | } else { | |
2040 | return mf_from_integer_string(mf, s, | |
2041 | (uint8_t *) valuep, (uint8_t *) maskp); | |
2042 | } | |
2043 | } | |
2044 | ||
7257b535 BP |
2045 | struct frag_handling { |
2046 | const char *name; | |
2047 | uint8_t mask; | |
2048 | uint8_t value; | |
2049 | }; | |
2050 | ||
2051 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
2052 | #define A FLOW_NW_FRAG_ANY |
2053 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
2054 | /* name mask value */ |
2055 | ||
2056 | { "no", A|L, 0 }, | |
2057 | { "first", A|L, A }, | |
2058 | { "later", A|L, A|L }, | |
2059 | ||
2060 | { "no", A, 0 }, | |
2061 | { "yes", A, A }, | |
2062 | ||
2063 | { "not_later", L, 0 }, | |
2064 | { "later", L, L }, | |
2065 | #undef A | |
2066 | #undef L | |
2067 | }; | |
2068 | ||
2069 | static char * | |
2070 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
2071 | { | |
2072 | const struct frag_handling *h; | |
2073 | ||
2074 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2075 | if (!strcasecmp(s, h->name)) { | |
2076 | /* We force the upper bits of the mask on to make mf_parse_value() | |
2077 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 2078 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
2079 | *valuep = h->value; |
2080 | return NULL; | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
2085 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
2086 | } | |
2087 | ||
4fe3445a PS |
2088 | static int |
2089 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
2090 | ovs_be16 *res) | |
2091 | { | |
2092 | uint32_t result = 0; | |
2093 | char *save_ptr = NULL; | |
2094 | char *name; | |
2095 | int rc = 0; | |
2096 | char *s = xstrdup(s_); | |
2097 | ||
2098 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
2099 | name = strtok_r(NULL, " |", &save_ptr)) { | |
2100 | int name_len; | |
2101 | unsigned long long int flags; | |
2102 | uint32_t bit; | |
2103 | int n0; | |
2104 | ||
2105 | if (sscanf(name, "%lli%n", &flags, &n0) > 0 && n0 > 0) { | |
2106 | result |= flags; | |
2107 | continue; | |
2108 | } | |
2109 | name_len = strlen(name); | |
2110 | for (bit = 1; bit; bit <<= 1) { | |
2111 | const char *fname = bit_to_string(bit); | |
2112 | size_t len; | |
2113 | ||
2114 | if (!fname) { | |
2115 | continue; | |
2116 | } | |
2117 | ||
2118 | len = strlen(fname); | |
2119 | if (len != name_len) { | |
2120 | continue; | |
2121 | } | |
2122 | if (!strncmp(name, fname, len)) { | |
2123 | result |= bit; | |
2124 | break; | |
2125 | } | |
2126 | } | |
2127 | ||
2128 | if (!bit) { | |
2129 | rc = -ENOENT; | |
2130 | goto out; | |
2131 | } | |
2132 | } | |
2133 | ||
2134 | *res = htons(result); | |
2135 | out: | |
2136 | free(s); | |
2137 | return rc; | |
2138 | } | |
2139 | ||
2140 | static char * | |
b0aa8146 | 2141 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
2142 | { |
2143 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b0aa8146 | 2144 | *maskp = htons(UINT16_MAX); |
4fe3445a PS |
2145 | return NULL; |
2146 | } | |
2147 | ||
2148 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
2149 | "\"csum\", \"key\"", s); | |
2150 | } | |
2151 | ||
6a885fd0 BP |
2152 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
2153 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
2154 | char * | |
2155 | mf_parse(const struct mf_field *mf, const char *s, | |
2156 | union mf_value *value, union mf_value *mask) | |
2157 | { | |
bedde04c | 2158 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
2159 | memset(value, 0, mf->n_bytes); |
2160 | memset(mask, 0, mf->n_bytes); | |
2161 | return NULL; | |
2162 | } | |
2163 | ||
2164 | switch (mf->string) { | |
2165 | case MFS_DECIMAL: | |
2166 | case MFS_HEXADECIMAL: | |
2167 | return mf_from_integer_string(mf, s, | |
2168 | (uint8_t *) value, (uint8_t *) mask); | |
2169 | ||
2170 | case MFS_ETHERNET: | |
2171 | return mf_from_ethernet_string(mf, s, value->mac, mask->mac); | |
2172 | ||
2173 | case MFS_IPV4: | |
2174 | return mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); | |
2175 | ||
2176 | case MFS_IPV6: | |
2177 | return mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); | |
2178 | ||
2179 | case MFS_OFP_PORT: | |
2180 | return mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); | |
7257b535 BP |
2181 | |
2182 | case MFS_FRAG: | |
2183 | return mf_from_frag_string(s, &value->u8, &mask->u8); | |
4fe3445a PS |
2184 | |
2185 | case MFS_TNL_FLAGS: | |
b0aa8146 BP |
2186 | assert(mf->n_bytes == sizeof(ovs_be16)); |
2187 | return mf_from_tun_flags_string(s, &value->be16, &mask->be16); | |
6a885fd0 BP |
2188 | } |
2189 | NOT_REACHED(); | |
2190 | } | |
2191 | ||
2192 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2193 | * successful, otherwise a malloc()'d string describing the error. */ | |
2194 | char * | |
2195 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2196 | { | |
2197 | union mf_value mask; | |
2198 | char *error; | |
2199 | ||
2200 | error = mf_parse(mf, s, value, &mask); | |
2201 | if (error) { | |
2202 | return error; | |
2203 | } | |
2204 | ||
2205 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2206 | return xasprintf("%s: wildcards not allowed here", s); | |
2207 | } | |
2208 | return NULL; | |
2209 | } | |
2210 | ||
2211 | static void | |
2212 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2213 | const uint8_t *maskp, struct ds *s) | |
2214 | { | |
2215 | unsigned long long int integer; | |
2216 | int i; | |
2217 | ||
2218 | assert(mf->n_bytes <= 8); | |
2219 | ||
2220 | integer = 0; | |
2221 | for (i = 0; i < mf->n_bytes; i++) { | |
2222 | integer = (integer << 8) | valuep[i]; | |
2223 | } | |
2224 | if (mf->string == MFS_HEXADECIMAL) { | |
2225 | ds_put_format(s, "%#llx", integer); | |
2226 | } else { | |
2227 | ds_put_format(s, "%lld", integer); | |
2228 | } | |
2229 | ||
2230 | if (maskp) { | |
2231 | unsigned long long int mask; | |
2232 | ||
2233 | mask = 0; | |
2234 | for (i = 0; i < mf->n_bytes; i++) { | |
2235 | mask = (mask << 8) | maskp[i]; | |
2236 | } | |
2237 | ||
2238 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2239 | * not sure that that a bit-mask written in decimal is ever easier to | |
2240 | * understand than the same bit-mask written in hexadecimal. */ | |
2241 | ds_put_format(s, "/%#llx", mask); | |
2242 | } | |
2243 | } | |
2244 | ||
7257b535 BP |
2245 | static void |
2246 | mf_format_frag_string(const uint8_t *valuep, const uint8_t *maskp, | |
2247 | struct ds *s) | |
2248 | { | |
2249 | const struct frag_handling *h; | |
2250 | uint8_t value = *valuep; | |
2251 | uint8_t mask = *maskp; | |
2252 | ||
2253 | value &= mask; | |
eadef313 | 2254 | mask &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
2255 | |
2256 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2257 | if (value == h->value && mask == h->mask) { | |
2258 | ds_put_cstr(s, h->name); | |
2259 | return; | |
2260 | } | |
2261 | } | |
2262 | ds_put_cstr(s, "<error>"); | |
2263 | } | |
2264 | ||
4fe3445a PS |
2265 | static void |
2266 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2267 | { | |
2268 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2269 | } | |
2270 | ||
6a885fd0 BP |
2271 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2272 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2273 | void | |
2274 | mf_format(const struct mf_field *mf, | |
2275 | const union mf_value *value, const union mf_value *mask, | |
2276 | struct ds *s) | |
2277 | { | |
2278 | if (mask) { | |
2279 | if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
2280 | ds_put_cstr(s, "ANY"); | |
2281 | return; | |
2282 | } else if (is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
2283 | mask = NULL; | |
2284 | } | |
2285 | } | |
2286 | ||
2287 | switch (mf->string) { | |
2288 | case MFS_OFP_PORT: | |
2289 | if (!mask) { | |
2290 | ofputil_format_port(ntohs(value->be16), s); | |
2291 | break; | |
2292 | } | |
2293 | /* fall through */ | |
2294 | case MFS_DECIMAL: | |
2295 | case MFS_HEXADECIMAL: | |
2296 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2297 | break; | |
2298 | ||
2299 | case MFS_ETHERNET: | |
3b4d8ad3 | 2300 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2301 | break; |
2302 | ||
2303 | case MFS_IPV4: | |
2304 | ip_format_masked(value->be32, mask ? mask->be32 : htonl(UINT32_MAX), | |
2305 | s); | |
2306 | break; | |
2307 | ||
2308 | case MFS_IPV6: | |
2309 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2310 | break; | |
2311 | ||
7257b535 BP |
2312 | case MFS_FRAG: |
2313 | mf_format_frag_string(&value->u8, &mask->u8, s); | |
2314 | break; | |
2315 | ||
4fe3445a PS |
2316 | case MFS_TNL_FLAGS: |
2317 | mf_format_tnl_flags_string(&value->be16, s); | |
2318 | break; | |
2319 | ||
6a885fd0 BP |
2320 | default: |
2321 | NOT_REACHED(); | |
2322 | } | |
2323 | } | |
816fd533 | 2324 | \f |
9bab681f IY |
2325 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2326 | * least-significant bits in 'x'. | |
2327 | */ | |
2328 | void | |
2329 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2330 | const union mf_subvalue *x, struct flow *flow) | |
2331 | { | |
2332 | const struct mf_field *field = sf->field; | |
2333 | union mf_value value; | |
2334 | ||
2335 | mf_get_value(field, flow, &value); | |
158edc8d | 2336 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2337 | sf->ofs, sf->n_bits); |
2338 | mf_set_flow_value(field, &value, flow); | |
2339 | } | |
2340 | ||
81a76618 | 2341 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2342 | * least-significant bits in 'x'. |
615660a9 | 2343 | */ |
1b35df45 BP |
2344 | void |
2345 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2346 | struct match *match) |
1b35df45 BP |
2347 | { |
2348 | const struct mf_field *field = sf->field; | |
2349 | union mf_value value, mask; | |
2350 | ||
81a76618 | 2351 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2352 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2353 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2354 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2355 | } |
2356 | ||
1b35df45 BP |
2357 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2358 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2359 | void | |
2360 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2361 | union mf_subvalue *x) | |
2362 | { | |
2363 | union mf_value value; | |
2364 | ||
2365 | mf_get_value(sf->field, flow, &value); | |
2366 | ||
2367 | memset(x, 0, sizeof *x); | |
2368 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2369 | x, sizeof *x, 0, | |
2370 | sf->n_bits); | |
2371 | } | |
2372 | ||
816fd533 BP |
2373 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2374 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2375 | * less. */ | |
2376 | uint64_t | |
2377 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2378 | { | |
2379 | union mf_value value; | |
2380 | ||
2381 | mf_get_value(sf->field, flow, &value); | |
2382 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2383 | } | |
2384 | ||
2385 | /* Formats 'sf' into 's' in a format normally acceptable to | |
2386 | * mf_parse_subfield(). (It won't be acceptable if sf->field is NULL or if | |
2387 | * sf->field has no NXM name.) */ | |
2388 | void | |
2389 | mf_format_subfield(const struct mf_subfield *sf, struct ds *s) | |
2390 | { | |
2391 | if (!sf->field) { | |
2392 | ds_put_cstr(s, "<unknown>"); | |
2393 | } else if (sf->field->nxm_name) { | |
2394 | ds_put_cstr(s, sf->field->nxm_name); | |
2395 | } else if (sf->field->nxm_header) { | |
2396 | uint32_t header = sf->field->nxm_header; | |
2397 | ds_put_format(s, "%d:%d", NXM_VENDOR(header), NXM_FIELD(header)); | |
2398 | } else { | |
2399 | ds_put_cstr(s, sf->field->name); | |
2400 | } | |
2401 | ||
33500edd | 2402 | if (sf->field && sf->ofs == 0 && sf->n_bits == sf->field->n_bits) { |
816fd533 BP |
2403 | ds_put_cstr(s, "[]"); |
2404 | } else if (sf->n_bits == 1) { | |
2405 | ds_put_format(s, "[%d]", sf->ofs); | |
2406 | } else { | |
2407 | ds_put_format(s, "[%d..%d]", sf->ofs, sf->ofs + sf->n_bits - 1); | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | static const struct mf_field * | |
2412 | mf_parse_subfield_name(const char *name, int name_len, bool *wild) | |
2413 | { | |
2414 | int i; | |
2415 | ||
2416 | *wild = name_len > 2 && !memcmp(&name[name_len - 2], "_W", 2); | |
2417 | if (*wild) { | |
2418 | name_len -= 2; | |
2419 | } | |
2420 | ||
2421 | for (i = 0; i < MFF_N_IDS; i++) { | |
2422 | const struct mf_field *mf = mf_from_id(i); | |
2423 | ||
2424 | if (mf->nxm_name | |
2425 | && !strncmp(mf->nxm_name, name, name_len) | |
2426 | && mf->nxm_name[name_len] == '\0') { | |
2427 | return mf; | |
2428 | } | |
b5e5143b BP |
2429 | if (mf->oxm_name |
2430 | && !strncmp(mf->oxm_name, name, name_len) | |
2431 | && mf->oxm_name[name_len] == '\0') { | |
2432 | return mf; | |
2433 | } | |
816fd533 BP |
2434 | } |
2435 | ||
2436 | return NULL; | |
2437 | } | |
2438 | ||
2439 | /* Parses a subfield from the beginning of '*sp' into 'sf'. If successful, | |
2440 | * returns NULL and advances '*sp' to the first byte following the parsed | |
2441 | * string. On failure, returns a malloc()'d error message, does not modify | |
2442 | * '*sp', and does not properly initialize 'sf'. | |
2443 | * | |
2444 | * The syntax parsed from '*sp' takes the form "header[start..end]" where | |
2445 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2446 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2447 | * may both be omitted (the [] are still required) to indicate an entire | |
2448 | * field. */ | |
2449 | char * | |
2450 | mf_parse_subfield__(struct mf_subfield *sf, const char **sp) | |
2451 | { | |
2452 | const struct mf_field *field; | |
2453 | const char *name; | |
2454 | int start, end; | |
2455 | const char *s; | |
2456 | int name_len; | |
2457 | bool wild; | |
2458 | ||
2459 | s = *sp; | |
2460 | name = s; | |
2461 | name_len = strcspn(s, "["); | |
2462 | if (s[name_len] != '[') { | |
2463 | return xasprintf("%s: missing [ looking for field name", *sp); | |
2464 | } | |
2465 | ||
2466 | field = mf_parse_subfield_name(name, name_len, &wild); | |
2467 | if (!field) { | |
2468 | return xasprintf("%s: unknown field `%.*s'", *sp, name_len, s); | |
2469 | } | |
2470 | ||
2471 | s += name_len; | |
2472 | if (sscanf(s, "[%d..%d]", &start, &end) == 2) { | |
2473 | /* Nothing to do. */ | |
2474 | } else if (sscanf(s, "[%d]", &start) == 1) { | |
2475 | end = start; | |
2476 | } else if (!strncmp(s, "[]", 2)) { | |
2477 | start = 0; | |
2478 | end = field->n_bits - 1; | |
2479 | } else { | |
2480 | return xasprintf("%s: syntax error expecting [] or [<bit>] or " | |
2481 | "[<start>..<end>]", *sp); | |
2482 | } | |
2483 | s = strchr(s, ']') + 1; | |
2484 | ||
2485 | if (start > end) { | |
2486 | return xasprintf("%s: starting bit %d is after ending bit %d", | |
2487 | *sp, start, end); | |
2488 | } else if (start >= field->n_bits) { | |
2489 | return xasprintf("%s: starting bit %d is not valid because field is " | |
2490 | "only %d bits wide", *sp, start, field->n_bits); | |
2491 | } else if (end >= field->n_bits){ | |
2492 | return xasprintf("%s: ending bit %d is not valid because field is " | |
2493 | "only %d bits wide", *sp, end, field->n_bits); | |
2494 | } | |
2495 | ||
2496 | sf->field = field; | |
2497 | sf->ofs = start; | |
2498 | sf->n_bits = end - start + 1; | |
2499 | ||
2500 | *sp = s; | |
2501 | return NULL; | |
2502 | } | |
2503 | ||
2504 | /* Parses a subfield from the beginning of 's' into 'sf'. Returns the first | |
2505 | * byte in 's' following the parsed string. | |
2506 | * | |
2507 | * Exits with an error message if 's' has incorrect syntax. | |
2508 | * | |
2509 | * The syntax parsed from 's' takes the form "header[start..end]" where | |
2510 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2511 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2512 | * may both be omitted (the [] are still required) to indicate an entire | |
2513 | * field. */ | |
2514 | const char * | |
2515 | mf_parse_subfield(struct mf_subfield *sf, const char *s) | |
2516 | { | |
2517 | char *msg = mf_parse_subfield__(sf, &s); | |
2518 | if (msg) { | |
2519 | ovs_fatal(0, "%s", msg); | |
2520 | } | |
2521 | return s; | |
2522 | } | |
9bab681f IY |
2523 | |
2524 | void | |
2525 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2526 | { | |
2527 | int i; | |
2528 | ||
2529 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2530 | if (subvalue->u8[i]) { | |
2531 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2532 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2533 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2534 | } | |
2535 | return; | |
2536 | } | |
2537 | } | |
2538 | ds_put_char(s, '0'); | |
2539 | } |