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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", | |
b5e5143b | 57 | NXM_NX_TUN_ID, "NXM_NX_TUN_ID", |
969fc56c JS |
58 | }, { |
59 | MFF_METADATA, "metadata", NULL, | |
60 | MF_FIELD_SIZES(be64), | |
0bdc4bec | 61 | MFM_FULLY, |
969fc56c JS |
62 | MFS_HEXADECIMAL, |
63 | MFP_NONE, | |
64 | true, | |
65 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
66 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
6a885fd0 BP |
67 | }, { |
68 | MFF_IN_PORT, "in_port", NULL, | |
69 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 70 | MFM_NONE, |
6a885fd0 BP |
71 | MFS_OFP_PORT, |
72 | MFP_NONE, | |
28da1f8f BP |
73 | false, |
74 | NXM_OF_IN_PORT, "NXM_OF_IN_PORT", | |
36f3999b | 75 | OXM_OF_IN_PORT, "OXM_OF_IN_PORT", |
6a885fd0 BP |
76 | }, |
77 | ||
78 | #define REGISTER(IDX) \ | |
79 | { \ | |
80 | MFF_REG##IDX, "reg" #IDX, NULL, \ | |
81 | MF_FIELD_SIZES(be32), \ | |
0bdc4bec | 82 | MFM_FULLY, \ |
6a885fd0 BP |
83 | MFS_HEXADECIMAL, \ |
84 | MFP_NONE, \ | |
28da1f8f | 85 | true, \ |
b5e5143b BP |
86 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ |
87 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ | |
6a885fd0 BP |
88 | } |
89 | #if FLOW_N_REGS > 0 | |
90 | REGISTER(0), | |
91 | #endif | |
92 | #if FLOW_N_REGS > 1 | |
93 | REGISTER(1), | |
94 | #endif | |
95 | #if FLOW_N_REGS > 2 | |
96 | REGISTER(2), | |
97 | #endif | |
98 | #if FLOW_N_REGS > 3 | |
99 | REGISTER(3), | |
100 | #endif | |
101 | #if FLOW_N_REGS > 4 | |
d2c0fed9 JP |
102 | REGISTER(4), |
103 | #endif | |
104 | #if FLOW_N_REGS > 5 | |
e9358af6 EJ |
105 | REGISTER(5), |
106 | #endif | |
107 | #if FLOW_N_REGS > 6 | |
108 | REGISTER(6), | |
109 | #endif | |
110 | #if FLOW_N_REGS > 7 | |
111 | REGISTER(7), | |
112 | #endif | |
113 | #if FLOW_N_REGS > 8 | |
6a885fd0 BP |
114 | #error |
115 | #endif | |
116 | ||
117 | /* ## -- ## */ | |
118 | /* ## L2 ## */ | |
119 | /* ## -- ## */ | |
120 | ||
121 | { | |
122 | MFF_ETH_SRC, "eth_src", "dl_src", | |
123 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 124 | MFM_FULLY, |
6a885fd0 BP |
125 | MFS_ETHERNET, |
126 | MFP_NONE, | |
28da1f8f BP |
127 | true, |
128 | NXM_OF_ETH_SRC, "NXM_OF_ETH_SRC", | |
36f3999b | 129 | OXM_OF_ETH_SRC, "OXM_OF_ETH_SRC", |
6a885fd0 BP |
130 | }, { |
131 | MFF_ETH_DST, "eth_dst", "dl_dst", | |
132 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 133 | MFM_FULLY, |
6a885fd0 BP |
134 | MFS_ETHERNET, |
135 | MFP_NONE, | |
28da1f8f BP |
136 | true, |
137 | NXM_OF_ETH_DST, "NXM_OF_ETH_DST", | |
36f3999b | 138 | OXM_OF_ETH_DST, "OXM_OF_ETH_DST", |
6a885fd0 BP |
139 | }, { |
140 | MFF_ETH_TYPE, "eth_type", "dl_type", | |
141 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 142 | MFM_NONE, |
6a885fd0 BP |
143 | MFS_HEXADECIMAL, |
144 | MFP_NONE, | |
28da1f8f BP |
145 | false, |
146 | NXM_OF_ETH_TYPE, "NXM_OF_ETH_TYPE", | |
36f3999b | 147 | OXM_OF_ETH_TYPE, "OXM_OF_ETH_TYPE", |
6a885fd0 BP |
148 | }, |
149 | ||
150 | { | |
151 | MFF_VLAN_TCI, "vlan_tci", NULL, | |
152 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 153 | MFM_FULLY, |
6a885fd0 BP |
154 | MFS_HEXADECIMAL, |
155 | MFP_NONE, | |
28da1f8f BP |
156 | true, |
157 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", | |
b5e5143b | 158 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", |
6a885fd0 | 159 | }, { |
441c57a9 | 160 | MFF_DL_VLAN, "dl_vlan", NULL, |
6a885fd0 | 161 | sizeof(ovs_be16), 12, |
0bdc4bec | 162 | MFM_NONE, |
6a885fd0 BP |
163 | MFS_DECIMAL, |
164 | MFP_NONE, | |
28da1f8f | 165 | true, |
cc34bc8c BP |
166 | 0, NULL, |
167 | 0, NULL, | |
168 | }, { | |
169 | MFF_VLAN_VID, "vlan_vid", NULL, | |
170 | sizeof(ovs_be16), 12, | |
0bdc4bec | 171 | MFM_FULLY, |
cc34bc8c BP |
172 | MFS_DECIMAL, |
173 | MFP_NONE, | |
174 | true, | |
b5e5143b | 175 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
36f3999b | 176 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
6a885fd0 | 177 | }, { |
441c57a9 | 178 | MFF_DL_VLAN_PCP, "dl_vlan_pcp", NULL, |
6a885fd0 | 179 | 1, 3, |
0bdc4bec | 180 | MFM_NONE, |
6a885fd0 BP |
181 | MFS_DECIMAL, |
182 | MFP_NONE, | |
28da1f8f | 183 | true, |
cc34bc8c BP |
184 | 0, NULL, |
185 | 0, NULL, | |
186 | }, { | |
187 | MFF_VLAN_PCP, "vlan_pcp", NULL, | |
188 | 1, 3, | |
0bdc4bec | 189 | MFM_NONE, |
cc34bc8c | 190 | MFS_DECIMAL, |
8069b0da | 191 | MFP_VLAN_VID, |
cc34bc8c | 192 | true, |
b5e5143b | 193 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
36f3999b | 194 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
6a885fd0 BP |
195 | }, |
196 | ||
197 | /* ## -- ## */ | |
198 | /* ## L3 ## */ | |
199 | /* ## -- ## */ | |
200 | ||
201 | { | |
202 | MFF_IPV4_SRC, "ip_src", "nw_src", | |
203 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 204 | MFM_FULLY, |
6a885fd0 BP |
205 | MFS_IPV4, |
206 | MFP_IPV4, | |
28da1f8f BP |
207 | true, |
208 | NXM_OF_IP_SRC, "NXM_OF_IP_SRC", | |
36f3999b | 209 | OXM_OF_IPV4_SRC, "OXM_OF_IPV4_SRC", |
6a885fd0 BP |
210 | }, { |
211 | MFF_IPV4_DST, "ip_dst", "nw_dst", | |
212 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 213 | MFM_FULLY, |
6a885fd0 BP |
214 | MFS_IPV4, |
215 | MFP_IPV4, | |
28da1f8f BP |
216 | true, |
217 | NXM_OF_IP_DST, "NXM_OF_IP_DST", | |
36f3999b | 218 | OXM_OF_IPV4_DST, "OXM_OF_IPV4_DST", |
6a885fd0 BP |
219 | }, |
220 | ||
221 | { | |
222 | MFF_IPV6_SRC, "ipv6_src", NULL, | |
223 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 224 | MFM_FULLY, |
6a885fd0 BP |
225 | MFS_IPV6, |
226 | MFP_IPV6, | |
28da1f8f BP |
227 | true, |
228 | NXM_NX_IPV6_SRC, "NXM_NX_IPV6_SRC", | |
36f3999b | 229 | OXM_OF_IPV6_SRC, "OXM_OF_IPV6_SRC", |
6a885fd0 BP |
230 | }, { |
231 | MFF_IPV6_DST, "ipv6_dst", NULL, | |
232 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 233 | MFM_FULLY, |
6a885fd0 BP |
234 | MFS_IPV6, |
235 | MFP_IPV6, | |
28da1f8f BP |
236 | true, |
237 | NXM_NX_IPV6_DST, "NXM_NX_IPV6_DST", | |
36f3999b | 238 | OXM_OF_IPV6_DST, "OXM_OF_IPV6_DST", |
6a885fd0 | 239 | }, |
fa8223b7 JP |
240 | { |
241 | MFF_IPV6_LABEL, "ipv6_label", NULL, | |
242 | 4, 20, | |
0bdc4bec | 243 | MFM_FULLY, |
fa8223b7 JP |
244 | MFS_HEXADECIMAL, |
245 | MFP_IPV6, | |
28da1f8f BP |
246 | false, |
247 | NXM_NX_IPV6_LABEL, "NXM_NX_IPV6_LABEL", | |
36f3999b | 248 | OXM_OF_IPV6_FLABEL, "OXM_OF_IPV6_FLABEL", |
fa8223b7 | 249 | }, |
6a885fd0 BP |
250 | |
251 | { | |
252 | MFF_IP_PROTO, "nw_proto", NULL, | |
253 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 254 | MFM_NONE, |
6a885fd0 BP |
255 | MFS_DECIMAL, |
256 | MFP_IP_ANY, | |
28da1f8f BP |
257 | false, |
258 | NXM_OF_IP_PROTO, "NXM_OF_IP_PROTO", | |
36f3999b | 259 | OXM_OF_IP_PROTO, "OXM_OF_IP_PROTO", |
6a885fd0 | 260 | }, { |
530180fd | 261 | MFF_IP_DSCP, "nw_tos", NULL, |
6a885fd0 | 262 | MF_FIELD_SIZES(u8), |
0bdc4bec | 263 | MFM_NONE, |
6a885fd0 BP |
264 | MFS_DECIMAL, |
265 | MFP_IP_ANY, | |
28da1f8f | 266 | true, |
36f3999b SH |
267 | NXM_OF_IP_TOS, "NXM_OF_IP_TOS", |
268 | OXM_OF_IP_DSCP, "OXM_OF_IP_DSCP", | |
530180fd JP |
269 | }, { |
270 | MFF_IP_ECN, "nw_ecn", NULL, | |
271 | 1, 2, | |
0bdc4bec | 272 | MFM_NONE, |
530180fd JP |
273 | MFS_DECIMAL, |
274 | MFP_IP_ANY, | |
28da1f8f BP |
275 | true, |
276 | NXM_NX_IP_ECN, "NXM_NX_IP_ECN", | |
36f3999b | 277 | OXM_OF_IP_ECN, "OXM_OF_IP_ECN", |
a61680c6 JP |
278 | }, { |
279 | MFF_IP_TTL, "nw_ttl", NULL, | |
280 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 281 | MFM_NONE, |
a61680c6 JP |
282 | MFS_DECIMAL, |
283 | MFP_IP_ANY, | |
28da1f8f | 284 | true, |
36f3999b | 285 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
b5e5143b | 286 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
7257b535 BP |
287 | }, { |
288 | MFF_IP_FRAG, "ip_frag", NULL, | |
289 | 1, 2, | |
0bdc4bec | 290 | MFM_FULLY, |
7257b535 BP |
291 | MFS_FRAG, |
292 | MFP_IP_ANY, | |
28da1f8f | 293 | false, |
36f3999b | 294 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
b5e5143b | 295 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
6a885fd0 BP |
296 | }, |
297 | ||
298 | { | |
299 | MFF_ARP_OP, "arp_op", NULL, | |
300 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 301 | MFM_NONE, |
6a885fd0 BP |
302 | MFS_DECIMAL, |
303 | MFP_ARP, | |
28da1f8f BP |
304 | false, |
305 | NXM_OF_ARP_OP, "NXM_OF_ARP_OP", | |
36f3999b | 306 | OXM_OF_ARP_OP, "OXM_OF_ARP_OP", |
6a885fd0 BP |
307 | }, { |
308 | MFF_ARP_SPA, "arp_spa", NULL, | |
309 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 310 | MFM_FULLY, |
6a885fd0 BP |
311 | MFS_IPV4, |
312 | MFP_ARP, | |
28da1f8f BP |
313 | false, |
314 | NXM_OF_ARP_SPA, "NXM_OF_ARP_SPA", | |
36f3999b | 315 | OXM_OF_ARP_SPA, "OXM_OF_ARP_SPA", |
6a885fd0 BP |
316 | }, { |
317 | MFF_ARP_TPA, "arp_tpa", NULL, | |
318 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 319 | MFM_FULLY, |
6a885fd0 BP |
320 | MFS_IPV4, |
321 | MFP_ARP, | |
28da1f8f BP |
322 | false, |
323 | NXM_OF_ARP_TPA, "NXM_OF_ARP_TPA", | |
36f3999b | 324 | OXM_OF_ARP_TPA, "OXM_OF_ARP_TPA", |
6a885fd0 BP |
325 | }, { |
326 | MFF_ARP_SHA, "arp_sha", NULL, | |
327 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 328 | MFM_FULLY, |
6a885fd0 BP |
329 | MFS_ETHERNET, |
330 | MFP_ARP, | |
28da1f8f BP |
331 | false, |
332 | NXM_NX_ARP_SHA, "NXM_NX_ARP_SHA", | |
36f3999b | 333 | OXM_OF_ARP_SHA, "OXM_OF_ARP_SHA", |
6a885fd0 BP |
334 | }, { |
335 | MFF_ARP_THA, "arp_tha", NULL, | |
336 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 337 | MFM_FULLY, |
6a885fd0 BP |
338 | MFS_ETHERNET, |
339 | MFP_ARP, | |
28da1f8f BP |
340 | false, |
341 | NXM_NX_ARP_THA, "NXM_NX_ARP_THA", | |
36f3999b | 342 | OXM_OF_ARP_THA, "OXM_OF_ARP_THA", |
6a885fd0 BP |
343 | }, |
344 | ||
345 | /* ## -- ## */ | |
346 | /* ## L4 ## */ | |
347 | /* ## -- ## */ | |
348 | ||
349 | { | |
350 | MFF_TCP_SRC, "tcp_src", "tp_src", | |
351 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 352 | MFM_FULLY, |
6a885fd0 BP |
353 | MFS_DECIMAL, |
354 | MFP_TCP, | |
28da1f8f BP |
355 | true, |
356 | NXM_OF_TCP_SRC, "NXM_OF_TCP_SRC", | |
36f3999b | 357 | OXM_OF_TCP_SRC, "OXM_OF_TCP_SRC", |
6a885fd0 BP |
358 | }, { |
359 | MFF_TCP_DST, "tcp_dst", "tp_dst", | |
360 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 361 | MFM_FULLY, |
6a885fd0 BP |
362 | MFS_DECIMAL, |
363 | MFP_TCP, | |
28da1f8f BP |
364 | true, |
365 | NXM_OF_TCP_DST, "NXM_OF_TCP_DST", | |
36f3999b | 366 | OXM_OF_TCP_DST, "OXM_OF_TCP_DST", |
6a885fd0 BP |
367 | }, |
368 | ||
369 | { | |
370 | MFF_UDP_SRC, "udp_src", NULL, | |
371 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 372 | MFM_FULLY, |
6a885fd0 BP |
373 | MFS_DECIMAL, |
374 | MFP_UDP, | |
28da1f8f BP |
375 | true, |
376 | NXM_OF_UDP_SRC, "NXM_OF_UDP_SRC", | |
36f3999b | 377 | OXM_OF_UDP_SRC, "OXM_OF_UDP_SRC", |
6a885fd0 BP |
378 | }, { |
379 | MFF_UDP_DST, "udp_dst", NULL, | |
380 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 381 | MFM_FULLY, |
6a885fd0 BP |
382 | MFS_DECIMAL, |
383 | MFP_UDP, | |
28da1f8f BP |
384 | true, |
385 | NXM_OF_UDP_DST, "NXM_OF_UDP_DST", | |
36f3999b | 386 | OXM_OF_UDP_DST, "OXM_OF_UDP_DST", |
6a885fd0 BP |
387 | }, |
388 | ||
389 | { | |
268a95e0 | 390 | MFF_ICMPV4_TYPE, "icmp_type", NULL, |
6a885fd0 | 391 | MF_FIELD_SIZES(u8), |
0bdc4bec | 392 | MFM_NONE, |
6a885fd0 | 393 | MFS_DECIMAL, |
268a95e0 | 394 | MFP_ICMPV4, |
28da1f8f BP |
395 | false, |
396 | NXM_OF_ICMP_TYPE, "NXM_OF_ICMP_TYPE", | |
36f3999b | 397 | OXM_OF_ICMPV4_TYPE, "OXM_OF_ICMPV4_TYPE", |
6a885fd0 | 398 | }, { |
268a95e0 | 399 | MFF_ICMPV4_CODE, "icmp_code", NULL, |
6a885fd0 | 400 | MF_FIELD_SIZES(u8), |
0bdc4bec | 401 | MFM_NONE, |
6a885fd0 | 402 | MFS_DECIMAL, |
268a95e0 | 403 | MFP_ICMPV4, |
28da1f8f BP |
404 | false, |
405 | NXM_OF_ICMP_CODE, "NXM_OF_ICMP_CODE", | |
36f3999b | 406 | OXM_OF_ICMPV4_CODE, "OXM_OF_ICMPV4_CODE", |
28da1f8f BP |
407 | }, |
408 | ||
409 | { | |
268a95e0 BP |
410 | MFF_ICMPV6_TYPE, "icmpv6_type", NULL, |
411 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 412 | MFM_NONE, |
268a95e0 BP |
413 | MFS_DECIMAL, |
414 | MFP_ICMPV6, | |
28da1f8f BP |
415 | false, |
416 | NXM_NX_ICMPV6_TYPE, "NXM_NX_ICMPV6_TYPE", | |
36f3999b | 417 | OXM_OF_ICMPV6_TYPE, "OXM_OF_ICMPV6_TYPE", |
268a95e0 BP |
418 | }, { |
419 | MFF_ICMPV6_CODE, "icmpv6_code", NULL, | |
420 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 421 | MFM_NONE, |
268a95e0 BP |
422 | MFS_DECIMAL, |
423 | MFP_ICMPV6, | |
28da1f8f BP |
424 | false, |
425 | NXM_NX_ICMPV6_CODE, "NXM_NX_ICMPV6_CODE", | |
36f3999b | 426 | OXM_OF_ICMPV6_CODE, "OXM_OF_ICMPV6_CODE", |
6a885fd0 BP |
427 | }, |
428 | ||
429 | /* ## ---- ## */ | |
430 | /* ## L"5" ## */ | |
431 | /* ## ---- ## */ | |
432 | ||
433 | { | |
434 | MFF_ND_TARGET, "nd_target", NULL, | |
435 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 436 | MFM_FULLY, |
6a885fd0 BP |
437 | MFS_IPV6, |
438 | MFP_ND, | |
28da1f8f BP |
439 | false, |
440 | NXM_NX_ND_TARGET, "NXM_NX_ND_TARGET", | |
36f3999b | 441 | OXM_OF_IPV6_ND_TARGET, "OXM_OF_IPV6_ND_TARGET", |
6a885fd0 BP |
442 | }, { |
443 | MFF_ND_SLL, "nd_sll", NULL, | |
444 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 445 | MFM_FULLY, |
6a885fd0 BP |
446 | MFS_ETHERNET, |
447 | MFP_ND_SOLICIT, | |
28da1f8f BP |
448 | false, |
449 | NXM_NX_ND_SLL, "NXM_NX_ND_SLL", | |
36f3999b | 450 | OXM_OF_IPV6_ND_SLL, "OXM_OF_IPV6_ND_SLL", |
6a885fd0 BP |
451 | }, { |
452 | MFF_ND_TLL, "nd_tll", NULL, | |
453 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 454 | MFM_FULLY, |
6a885fd0 BP |
455 | MFS_ETHERNET, |
456 | MFP_ND_ADVERT, | |
28da1f8f BP |
457 | false, |
458 | NXM_NX_ND_TLL, "NXM_NX_ND_TLL", | |
36f3999b | 459 | OXM_OF_IPV6_ND_TLL, "OXM_OF_IPV6_ND_TLL", |
6a885fd0 BP |
460 | } |
461 | }; | |
462 | ||
b5e5143b | 463 | /* Maps an NXM or OXM header value to an mf_field. */ |
28da1f8f | 464 | struct nxm_field { |
b5e5143b BP |
465 | struct hmap_node hmap_node; /* In 'all_fields' hmap. */ |
466 | uint32_t header; /* NXM or OXM header value. */ | |
28da1f8f BP |
467 | const struct mf_field *mf; |
468 | }; | |
469 | ||
b5e5143b BP |
470 | /* Contains 'struct nxm_field's. */ |
471 | static struct hmap all_fields = HMAP_INITIALIZER(&all_fields); | |
28da1f8f | 472 | |
816fd533 BP |
473 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
474 | * controller and so there's not much point in showing a lot of them. */ | |
475 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
476 | ||
b5e5143b BP |
477 | const struct mf_field *mf_from_nxm_header__(uint32_t header); |
478 | ||
6a885fd0 BP |
479 | /* Returns the field with the given 'id'. */ |
480 | const struct mf_field * | |
481 | mf_from_id(enum mf_field_id id) | |
482 | { | |
483 | assert((unsigned int) id < MFF_N_IDS); | |
484 | return &mf_fields[id]; | |
485 | } | |
486 | ||
487 | /* Returns the field with the given 'name', or a null pointer if no field has | |
488 | * that name. */ | |
489 | const struct mf_field * | |
490 | mf_from_name(const char *name) | |
491 | { | |
492 | static struct shash mf_by_name = SHASH_INITIALIZER(&mf_by_name); | |
493 | ||
494 | if (shash_is_empty(&mf_by_name)) { | |
495 | const struct mf_field *mf; | |
496 | ||
497 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { | |
498 | shash_add_once(&mf_by_name, mf->name, mf); | |
499 | if (mf->extra_name) { | |
500 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
501 | } | |
502 | } | |
503 | } | |
504 | ||
505 | return shash_find_data(&mf_by_name, name); | |
506 | } | |
507 | ||
28da1f8f | 508 | static void |
b5e5143b | 509 | add_nxm_field(uint32_t header, const struct mf_field *mf) |
28da1f8f BP |
510 | { |
511 | struct nxm_field *f; | |
512 | ||
513 | f = xmalloc(sizeof *f); | |
b5e5143b BP |
514 | hmap_insert(&all_fields, &f->hmap_node, hash_int(header, 0)); |
515 | f->header = header; | |
28da1f8f BP |
516 | f->mf = mf; |
517 | } | |
518 | ||
b5ae8913 SH |
519 | static void |
520 | nxm_init_add_field(const struct mf_field *mf, uint32_t header) | |
521 | { | |
b5e5143b BP |
522 | if (header) { |
523 | assert(!mf_from_nxm_header__(header)); | |
524 | add_nxm_field(header, mf); | |
525 | if (mf->maskable != MFM_NONE) { | |
526 | add_nxm_field(NXM_MAKE_WILD_HEADER(header), mf); | |
527 | } | |
b5ae8913 | 528 | } |
b5ae8913 | 529 | } |
b5ae8913 | 530 | |
28da1f8f BP |
531 | static void |
532 | nxm_init(void) | |
533 | { | |
534 | const struct mf_field *mf; | |
535 | ||
536 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { | |
b5ae8913 | 537 | nxm_init_add_field(mf, mf->nxm_header); |
b5e5143b BP |
538 | if (mf->oxm_header != mf->nxm_header) { |
539 | nxm_init_add_field(mf, mf->oxm_header); | |
540 | } | |
28da1f8f | 541 | } |
28da1f8f BP |
542 | } |
543 | ||
544 | const struct mf_field * | |
545 | mf_from_nxm_header(uint32_t header) | |
546 | { | |
b5e5143b | 547 | if (hmap_is_empty(&all_fields)) { |
28da1f8f BP |
548 | nxm_init(); |
549 | } | |
b5e5143b BP |
550 | return mf_from_nxm_header__(header); |
551 | } | |
28da1f8f | 552 | |
b5e5143b BP |
553 | const struct mf_field * |
554 | mf_from_nxm_header__(uint32_t header) | |
555 | { | |
556 | const struct nxm_field *f; | |
557 | ||
558 | HMAP_FOR_EACH_IN_BUCKET (f, hmap_node, hash_int(header, 0), &all_fields) { | |
559 | if (f->header == header) { | |
28da1f8f BP |
560 | return f->mf; |
561 | } | |
562 | } | |
563 | ||
564 | return NULL; | |
565 | } | |
566 | ||
6a885fd0 BP |
567 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
568 | * specifies at least one bit in the field. | |
569 | * | |
570 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
571 | * meets 'mf''s prerequisites. */ | |
572 | bool | |
573 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
574 | { | |
575 | switch (mf->id) { | |
6a885fd0 | 576 | case MFF_TUN_ID: |
296e07ac | 577 | return !wc->masks.tunnel.tun_id; |
969fc56c | 578 | case MFF_METADATA: |
26720e24 | 579 | return !wc->masks.metadata; |
0bdc4bec | 580 | case MFF_IN_PORT: |
26720e24 | 581 | return !wc->masks.in_port; |
0d7e2fe4 | 582 | CASE_MFF_REGS: |
26720e24 | 583 | return !wc->masks.regs[mf->id - MFF_REG0]; |
6a885fd0 | 584 | |
73c0ce34 | 585 | case MFF_ETH_SRC: |
26720e24 | 586 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 587 | case MFF_ETH_DST: |
26720e24 | 588 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 589 | case MFF_ETH_TYPE: |
26720e24 | 590 | return !wc->masks.dl_type; |
6a885fd0 | 591 | |
e878338b SH |
592 | case MFF_ARP_SHA: |
593 | case MFF_ND_SLL: | |
26720e24 | 594 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
595 | |
596 | case MFF_ARP_THA: | |
597 | case MFF_ND_TLL: | |
26720e24 | 598 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 599 | |
6a885fd0 | 600 | case MFF_VLAN_TCI: |
26720e24 | 601 | return !wc->masks.vlan_tci; |
441c57a9 | 602 | case MFF_DL_VLAN: |
26720e24 | 603 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 604 | case MFF_VLAN_VID: |
26720e24 | 605 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 606 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 607 | case MFF_VLAN_PCP: |
26720e24 | 608 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 BP |
609 | |
610 | case MFF_IPV4_SRC: | |
26720e24 | 611 | return !wc->masks.nw_src; |
6a885fd0 | 612 | case MFF_IPV4_DST: |
26720e24 | 613 | return !wc->masks.nw_dst; |
6a885fd0 BP |
614 | |
615 | case MFF_IPV6_SRC: | |
26720e24 | 616 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 617 | case MFF_IPV6_DST: |
26720e24 | 618 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 619 | |
32455024 | 620 | case MFF_IPV6_LABEL: |
26720e24 | 621 | return !wc->masks.ipv6_label; |
32455024 | 622 | |
851d3105 | 623 | case MFF_IP_PROTO: |
26720e24 | 624 | return !wc->masks.nw_proto; |
5d9499c4 | 625 | case MFF_IP_DSCP: |
26720e24 | 626 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 627 | case MFF_IP_ECN: |
26720e24 | 628 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 629 | case MFF_IP_TTL: |
26720e24 | 630 | return !wc->masks.nw_ttl; |
5d9499c4 | 631 | |
47284b1f | 632 | case MFF_ND_TARGET: |
26720e24 | 633 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 634 | |
7257b535 | 635 | case MFF_IP_FRAG: |
26720e24 | 636 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 637 | |
851d3105 | 638 | case MFF_ARP_OP: |
26720e24 | 639 | return !wc->masks.nw_proto; |
6a885fd0 | 640 | case MFF_ARP_SPA: |
26720e24 | 641 | return !wc->masks.nw_src; |
6a885fd0 | 642 | case MFF_ARP_TPA: |
26720e24 | 643 | return !wc->masks.nw_dst; |
6a885fd0 | 644 | |
73f33563 BP |
645 | case MFF_TCP_SRC: |
646 | case MFF_UDP_SRC: | |
647 | case MFF_ICMPV4_TYPE: | |
648 | case MFF_ICMPV6_TYPE: | |
26720e24 | 649 | return !wc->masks.tp_src; |
73f33563 BP |
650 | case MFF_TCP_DST: |
651 | case MFF_UDP_DST: | |
652 | case MFF_ICMPV4_CODE: | |
653 | case MFF_ICMPV6_CODE: | |
26720e24 | 654 | return !wc->masks.tp_dst; |
73f33563 | 655 | |
6a885fd0 BP |
656 | case MFF_N_IDS: |
657 | default: | |
658 | NOT_REACHED(); | |
659 | } | |
660 | } | |
661 | ||
662 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
663 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
664 | * purposes, or to 0 if it is wildcarded. | |
665 | * | |
666 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
667 | * meets 'mf''s prerequisites. */ | |
668 | void | |
669 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
670 | union mf_value *mask) | |
671 | { | |
672 | switch (mf->id) { | |
6a885fd0 | 673 | case MFF_TUN_ID: |
296e07ac | 674 | mask->be64 = wc->masks.tunnel.tun_id; |
6a885fd0 | 675 | break; |
969fc56c | 676 | case MFF_METADATA: |
26720e24 | 677 | mask->be64 = wc->masks.metadata; |
969fc56c | 678 | break; |
0bdc4bec | 679 | case MFF_IN_PORT: |
26720e24 | 680 | mask->be16 = htons(wc->masks.in_port); |
0bdc4bec | 681 | break; |
0d7e2fe4 | 682 | CASE_MFF_REGS: |
26720e24 | 683 | mask->be32 = htonl(wc->masks.regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
684 | break; |
685 | ||
686 | case MFF_ETH_DST: | |
26720e24 | 687 | memcpy(mask->mac, wc->masks.dl_dst, ETH_ADDR_LEN); |
73c0ce34 | 688 | break; |
73c0ce34 | 689 | case MFF_ETH_SRC: |
26720e24 | 690 | memcpy(mask->mac, wc->masks.dl_src, ETH_ADDR_LEN); |
6a885fd0 | 691 | break; |
e2170cff | 692 | case MFF_ETH_TYPE: |
26720e24 | 693 | mask->be16 = wc->masks.dl_type; |
e2170cff | 694 | break; |
6a885fd0 BP |
695 | |
696 | case MFF_VLAN_TCI: | |
26720e24 | 697 | mask->be16 = wc->masks.vlan_tci; |
6a885fd0 | 698 | break; |
441c57a9 | 699 | case MFF_DL_VLAN: |
26720e24 | 700 | mask->be16 = wc->masks.vlan_tci & htons(VLAN_VID_MASK); |
6a885fd0 | 701 | break; |
cc34bc8c | 702 | case MFF_VLAN_VID: |
26720e24 | 703 | mask->be16 = wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); |
cc34bc8c | 704 | break; |
441c57a9 | 705 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 706 | case MFF_VLAN_PCP: |
26720e24 | 707 | mask->u8 = vlan_tci_to_pcp(wc->masks.vlan_tci); |
6a885fd0 BP |
708 | break; |
709 | ||
710 | case MFF_IPV4_SRC: | |
26720e24 | 711 | mask->be32 = wc->masks.nw_src; |
6a885fd0 BP |
712 | break; |
713 | case MFF_IPV4_DST: | |
26720e24 | 714 | mask->be32 = wc->masks.nw_dst; |
6a885fd0 BP |
715 | break; |
716 | ||
717 | case MFF_IPV6_SRC: | |
26720e24 | 718 | mask->ipv6 = wc->masks.ipv6_src; |
6a885fd0 BP |
719 | break; |
720 | case MFF_IPV6_DST: | |
26720e24 | 721 | mask->ipv6 = wc->masks.ipv6_dst; |
6a885fd0 | 722 | break; |
465d9a8f | 723 | case MFF_IPV6_LABEL: |
26720e24 | 724 | mask->be32 = wc->masks.ipv6_label; |
465d9a8f | 725 | break; |
6a885fd0 | 726 | |
851d3105 | 727 | case MFF_IP_PROTO: |
26720e24 | 728 | mask->u8 = wc->masks.nw_proto; |
851d3105 | 729 | break; |
5d9499c4 | 730 | case MFF_IP_DSCP: |
26720e24 | 731 | mask->u8 = wc->masks.nw_tos & IP_DSCP_MASK; |
5d9499c4 BP |
732 | break; |
733 | case MFF_IP_ECN: | |
26720e24 | 734 | mask->u8 = wc->masks.nw_tos & IP_ECN_MASK; |
5d9499c4 BP |
735 | break; |
736 | ||
47284b1f | 737 | case MFF_ND_TARGET: |
26720e24 | 738 | mask->ipv6 = wc->masks.nd_target; |
47284b1f AA |
739 | break; |
740 | ||
3840c406 | 741 | case MFF_IP_TTL: |
26720e24 | 742 | mask->u8 = wc->masks.nw_ttl; |
3840c406 | 743 | break; |
7257b535 | 744 | case MFF_IP_FRAG: |
26720e24 | 745 | mask->u8 = wc->masks.nw_frag & FLOW_NW_FRAG_MASK; |
7257b535 BP |
746 | break; |
747 | ||
851d3105 | 748 | case MFF_ARP_OP: |
26720e24 | 749 | mask->u8 = wc->masks.nw_proto; |
851d3105 | 750 | break; |
6a885fd0 | 751 | case MFF_ARP_SPA: |
26720e24 | 752 | mask->be32 = wc->masks.nw_src; |
6a885fd0 BP |
753 | break; |
754 | case MFF_ARP_TPA: | |
26720e24 | 755 | mask->be32 = wc->masks.nw_dst; |
6a885fd0 | 756 | break; |
e878338b SH |
757 | case MFF_ARP_SHA: |
758 | case MFF_ND_SLL: | |
26720e24 | 759 | memcpy(mask->mac, wc->masks.arp_sha, ETH_ADDR_LEN); |
e878338b SH |
760 | break; |
761 | case MFF_ARP_THA: | |
762 | case MFF_ND_TLL: | |
26720e24 | 763 | memcpy(mask->mac, wc->masks.arp_tha, ETH_ADDR_LEN); |
e878338b | 764 | break; |
6a885fd0 | 765 | |
73f33563 BP |
766 | case MFF_TCP_SRC: |
767 | case MFF_UDP_SRC: | |
26720e24 | 768 | mask->be16 = wc->masks.tp_src; |
73f33563 BP |
769 | break; |
770 | case MFF_TCP_DST: | |
771 | case MFF_UDP_DST: | |
26720e24 | 772 | mask->be16 = wc->masks.tp_dst; |
73f33563 BP |
773 | break; |
774 | ||
775 | case MFF_ICMPV4_TYPE: | |
776 | case MFF_ICMPV6_TYPE: | |
26720e24 | 777 | mask->u8 = ntohs(wc->masks.tp_src); |
73f33563 BP |
778 | break; |
779 | case MFF_ICMPV4_CODE: | |
780 | case MFF_ICMPV6_CODE: | |
26720e24 | 781 | mask->u8 = ntohs(wc->masks.tp_dst); |
73f33563 BP |
782 | break; |
783 | ||
6a885fd0 BP |
784 | case MFF_N_IDS: |
785 | default: | |
786 | NOT_REACHED(); | |
787 | } | |
788 | } | |
789 | ||
790 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
791 | * if the mask is valid, false otherwise. */ | |
792 | bool | |
793 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
794 | { | |
795 | switch (mf->maskable) { | |
796 | case MFM_NONE: | |
797 | return (is_all_zeros((const uint8_t *) mask, mf->n_bytes) || | |
798 | is_all_ones((const uint8_t *) mask, mf->n_bytes)); | |
799 | ||
800 | case MFM_FULLY: | |
801 | return true; | |
6a885fd0 BP |
802 | } |
803 | ||
804 | NOT_REACHED(); | |
805 | } | |
806 | ||
807 | static bool | |
808 | is_ip_any(const struct flow *flow) | |
809 | { | |
810 | return (flow->dl_type == htons(ETH_TYPE_IP) || | |
811 | flow->dl_type == htons(ETH_TYPE_IPV6)); | |
812 | } | |
813 | ||
814 | static bool | |
815 | is_icmpv4(const struct flow *flow) | |
816 | { | |
817 | return (flow->dl_type == htons(ETH_TYPE_IP) | |
818 | && flow->nw_proto == IPPROTO_ICMP); | |
819 | } | |
820 | ||
821 | static bool | |
822 | is_icmpv6(const struct flow *flow) | |
823 | { | |
824 | return (flow->dl_type == htons(ETH_TYPE_IPV6) | |
825 | && flow->nw_proto == IPPROTO_ICMPV6); | |
826 | } | |
827 | ||
828 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ | |
829 | bool | |
830 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
831 | { | |
832 | switch (mf->prereqs) { | |
833 | case MFP_NONE: | |
834 | return true; | |
835 | ||
836 | case MFP_ARP: | |
8087f5ff MM |
837 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
838 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
839 | case MFP_IPV4: |
840 | return flow->dl_type == htons(ETH_TYPE_IP); | |
841 | case MFP_IPV6: | |
842 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 843 | case MFP_VLAN_VID: |
5921e99a | 844 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
6a885fd0 BP |
845 | case MFP_IP_ANY: |
846 | return is_ip_any(flow); | |
847 | ||
848 | case MFP_TCP: | |
849 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP; | |
850 | case MFP_UDP: | |
851 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP; | |
268a95e0 BP |
852 | case MFP_ICMPV4: |
853 | return is_icmpv4(flow); | |
6a885fd0 BP |
854 | case MFP_ICMPV6: |
855 | return is_icmpv6(flow); | |
6a885fd0 BP |
856 | |
857 | case MFP_ND: | |
858 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
859 | && flow->tp_dst == htons(0) |
860 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
861 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
862 | case MFP_ND_SOLICIT: |
863 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
864 | && flow->tp_dst == htons(0) |
865 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
866 | case MFP_ND_ADVERT: |
867 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
868 | && flow->tp_dst == htons(0) |
869 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
870 | } |
871 | ||
872 | NOT_REACHED(); | |
873 | } | |
874 | ||
875 | /* Returns true if 'value' may be a valid value *as part of a masked match*, | |
876 | * false otherwise. | |
877 | * | |
878 | * A value is not rejected just because it is not valid for the field in | |
879 | * question, but only if it doesn't make sense to test the bits in question at | |
880 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
881 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
882 | * it is still legitimate to test just for those bits (see the documentation | |
883 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 884 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
885 | bool |
886 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
887 | { | |
888 | switch (mf->id) { | |
889 | case MFF_TUN_ID: | |
969fc56c | 890 | case MFF_METADATA: |
6a885fd0 | 891 | case MFF_IN_PORT: |
0d7e2fe4 | 892 | CASE_MFF_REGS: |
6a885fd0 BP |
893 | case MFF_ETH_SRC: |
894 | case MFF_ETH_DST: | |
895 | case MFF_ETH_TYPE: | |
896 | case MFF_VLAN_TCI: | |
897 | case MFF_IPV4_SRC: | |
898 | case MFF_IPV4_DST: | |
899 | case MFF_IPV6_SRC: | |
900 | case MFF_IPV6_DST: | |
901 | case MFF_IP_PROTO: | |
a61680c6 | 902 | case MFF_IP_TTL: |
6a885fd0 BP |
903 | case MFF_ARP_SPA: |
904 | case MFF_ARP_TPA: | |
905 | case MFF_ARP_SHA: | |
906 | case MFF_ARP_THA: | |
907 | case MFF_TCP_SRC: | |
908 | case MFF_TCP_DST: | |
909 | case MFF_UDP_SRC: | |
910 | case MFF_UDP_DST: | |
268a95e0 BP |
911 | case MFF_ICMPV4_TYPE: |
912 | case MFF_ICMPV4_CODE: | |
913 | case MFF_ICMPV6_TYPE: | |
914 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
915 | case MFF_ND_TARGET: |
916 | case MFF_ND_SLL: | |
917 | case MFF_ND_TLL: | |
918 | return true; | |
919 | ||
530180fd | 920 | case MFF_IP_DSCP: |
7257b535 | 921 | return !(value->u8 & ~IP_DSCP_MASK); |
530180fd JP |
922 | case MFF_IP_ECN: |
923 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 924 | case MFF_IP_FRAG: |
eadef313 | 925 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
6a885fd0 BP |
926 | |
927 | case MFF_ARP_OP: | |
928 | return !(value->be16 & htons(0xff00)); | |
929 | ||
441c57a9 | 930 | case MFF_DL_VLAN: |
6a885fd0 | 931 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
932 | case MFF_VLAN_VID: |
933 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 934 | |
441c57a9 | 935 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 936 | case MFF_VLAN_PCP: |
24016f5a | 937 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 938 | |
fa8223b7 JP |
939 | case MFF_IPV6_LABEL: |
940 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
941 | ||
6a885fd0 BP |
942 | case MFF_N_IDS: |
943 | default: | |
944 | NOT_REACHED(); | |
945 | } | |
946 | } | |
947 | ||
948 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
949 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
950 | void | |
951 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
952 | union mf_value *value) | |
953 | { | |
954 | switch (mf->id) { | |
955 | case MFF_TUN_ID: | |
296e07ac | 956 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 957 | break; |
969fc56c JS |
958 | case MFF_METADATA: |
959 | value->be64 = flow->metadata; | |
960 | break; | |
6a885fd0 BP |
961 | |
962 | case MFF_IN_PORT: | |
963 | value->be16 = htons(flow->in_port); | |
964 | break; | |
965 | ||
0d7e2fe4 | 966 | CASE_MFF_REGS: |
2f98b0b7 | 967 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
968 | break; |
969 | ||
970 | case MFF_ETH_SRC: | |
971 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
972 | break; | |
973 | ||
974 | case MFF_ETH_DST: | |
975 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
976 | break; | |
977 | ||
978 | case MFF_ETH_TYPE: | |
979 | value->be16 = flow->dl_type; | |
980 | break; | |
981 | ||
982 | case MFF_VLAN_TCI: | |
983 | value->be16 = flow->vlan_tci; | |
984 | break; | |
985 | ||
441c57a9 | 986 | case MFF_DL_VLAN: |
6a885fd0 BP |
987 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
988 | break; | |
cc34bc8c BP |
989 | case MFF_VLAN_VID: |
990 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
991 | break; | |
6a885fd0 | 992 | |
441c57a9 | 993 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 994 | case MFF_VLAN_PCP: |
6a885fd0 BP |
995 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
996 | break; | |
997 | ||
998 | case MFF_IPV4_SRC: | |
999 | value->be32 = flow->nw_src; | |
1000 | break; | |
1001 | ||
1002 | case MFF_IPV4_DST: | |
1003 | value->be32 = flow->nw_dst; | |
1004 | break; | |
1005 | ||
1006 | case MFF_IPV6_SRC: | |
1007 | value->ipv6 = flow->ipv6_src; | |
1008 | break; | |
1009 | ||
1010 | case MFF_IPV6_DST: | |
1011 | value->ipv6 = flow->ipv6_dst; | |
1012 | break; | |
1013 | ||
fa8223b7 JP |
1014 | case MFF_IPV6_LABEL: |
1015 | value->be32 = flow->ipv6_label; | |
1016 | break; | |
1017 | ||
6a885fd0 BP |
1018 | case MFF_IP_PROTO: |
1019 | value->u8 = flow->nw_proto; | |
1020 | break; | |
1021 | ||
530180fd | 1022 | case MFF_IP_DSCP: |
eadef313 | 1023 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
1024 | break; |
1025 | ||
530180fd | 1026 | case MFF_IP_ECN: |
eadef313 | 1027 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
1028 | break; |
1029 | ||
a61680c6 JP |
1030 | case MFF_IP_TTL: |
1031 | value->u8 = flow->nw_ttl; | |
1032 | break; | |
1033 | ||
7257b535 | 1034 | case MFF_IP_FRAG: |
eadef313 | 1035 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
1036 | break; |
1037 | ||
1038 | case MFF_ARP_OP: | |
1039 | value->be16 = htons(flow->nw_proto); | |
1040 | break; | |
1041 | ||
1042 | case MFF_ARP_SPA: | |
1043 | value->be32 = flow->nw_src; | |
1044 | break; | |
1045 | ||
1046 | case MFF_ARP_TPA: | |
1047 | value->be32 = flow->nw_dst; | |
1048 | break; | |
1049 | ||
1050 | case MFF_ARP_SHA: | |
1051 | case MFF_ND_SLL: | |
1052 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
1053 | break; | |
1054 | ||
1055 | case MFF_ARP_THA: | |
1056 | case MFF_ND_TLL: | |
1057 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
1058 | break; | |
1059 | ||
1060 | case MFF_TCP_SRC: | |
6a885fd0 BP |
1061 | case MFF_UDP_SRC: |
1062 | value->be16 = flow->tp_src; | |
1063 | break; | |
1064 | ||
71baec06 | 1065 | case MFF_TCP_DST: |
6a885fd0 BP |
1066 | case MFF_UDP_DST: |
1067 | value->be16 = flow->tp_dst; | |
1068 | break; | |
1069 | ||
268a95e0 BP |
1070 | case MFF_ICMPV4_TYPE: |
1071 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
1072 | value->u8 = ntohs(flow->tp_src); |
1073 | break; | |
1074 | ||
268a95e0 BP |
1075 | case MFF_ICMPV4_CODE: |
1076 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1077 | value->u8 = ntohs(flow->tp_dst); |
1078 | break; | |
1079 | ||
1080 | case MFF_ND_TARGET: | |
1081 | value->ipv6 = flow->nd_target; | |
1082 | break; | |
1083 | ||
1084 | case MFF_N_IDS: | |
1085 | default: | |
1086 | NOT_REACHED(); | |
1087 | } | |
1088 | } | |
1089 | ||
81a76618 BP |
1090 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1091 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
1092 | * prerequisites. */ |
1093 | void | |
1094 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 1095 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
1096 | { |
1097 | switch (mf->id) { | |
1098 | case MFF_TUN_ID: | |
81a76618 | 1099 | match_set_tun_id(match, value->be64); |
6a885fd0 | 1100 | break; |
969fc56c | 1101 | case MFF_METADATA: |
81a76618 | 1102 | match_set_metadata(match, value->be64); |
969fc56c | 1103 | break; |
6a885fd0 BP |
1104 | |
1105 | case MFF_IN_PORT: | |
81a76618 | 1106 | match_set_in_port(match, ntohs(value->be16)); |
6a885fd0 BP |
1107 | break; |
1108 | ||
0d7e2fe4 | 1109 | CASE_MFF_REGS: |
81a76618 | 1110 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 1111 | break; |
6a885fd0 BP |
1112 | |
1113 | case MFF_ETH_SRC: | |
81a76618 | 1114 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
1115 | break; |
1116 | ||
1117 | case MFF_ETH_DST: | |
81a76618 | 1118 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
1119 | break; |
1120 | ||
1121 | case MFF_ETH_TYPE: | |
81a76618 | 1122 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
1123 | break; |
1124 | ||
1125 | case MFF_VLAN_TCI: | |
81a76618 | 1126 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
1127 | break; |
1128 | ||
441c57a9 | 1129 | case MFF_DL_VLAN: |
81a76618 | 1130 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 1131 | break; |
cc34bc8c | 1132 | case MFF_VLAN_VID: |
81a76618 | 1133 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 1134 | break; |
6a885fd0 | 1135 | |
441c57a9 | 1136 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1137 | case MFF_VLAN_PCP: |
81a76618 | 1138 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
1139 | break; |
1140 | ||
1141 | case MFF_IPV4_SRC: | |
81a76618 | 1142 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1143 | break; |
1144 | ||
1145 | case MFF_IPV4_DST: | |
81a76618 | 1146 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1147 | break; |
1148 | ||
1149 | case MFF_IPV6_SRC: | |
81a76618 | 1150 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
1151 | break; |
1152 | ||
1153 | case MFF_IPV6_DST: | |
81a76618 | 1154 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
1155 | break; |
1156 | ||
fa8223b7 | 1157 | case MFF_IPV6_LABEL: |
81a76618 | 1158 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
1159 | break; |
1160 | ||
6a885fd0 | 1161 | case MFF_IP_PROTO: |
81a76618 | 1162 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
1163 | break; |
1164 | ||
530180fd | 1165 | case MFF_IP_DSCP: |
81a76618 | 1166 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
1167 | break; |
1168 | ||
1169 | case MFF_IP_ECN: | |
81a76618 | 1170 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
1171 | break; |
1172 | ||
a61680c6 | 1173 | case MFF_IP_TTL: |
81a76618 | 1174 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
1175 | break; |
1176 | ||
7257b535 | 1177 | case MFF_IP_FRAG: |
81a76618 | 1178 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
1179 | break; |
1180 | ||
6a885fd0 | 1181 | case MFF_ARP_OP: |
81a76618 | 1182 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
1183 | break; |
1184 | ||
1185 | case MFF_ARP_SPA: | |
81a76618 | 1186 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1187 | break; |
1188 | ||
1189 | case MFF_ARP_TPA: | |
81a76618 | 1190 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1191 | break; |
1192 | ||
1193 | case MFF_ARP_SHA: | |
1194 | case MFF_ND_SLL: | |
81a76618 | 1195 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
1196 | break; |
1197 | ||
1198 | case MFF_ARP_THA: | |
1199 | case MFF_ND_TLL: | |
81a76618 | 1200 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
1201 | break; |
1202 | ||
1203 | case MFF_TCP_SRC: | |
6a885fd0 | 1204 | case MFF_UDP_SRC: |
81a76618 | 1205 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
1206 | break; |
1207 | ||
71baec06 | 1208 | case MFF_TCP_DST: |
6a885fd0 | 1209 | case MFF_UDP_DST: |
81a76618 | 1210 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
1211 | break; |
1212 | ||
268a95e0 BP |
1213 | case MFF_ICMPV4_TYPE: |
1214 | case MFF_ICMPV6_TYPE: | |
81a76618 | 1215 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
1216 | break; |
1217 | ||
268a95e0 BP |
1218 | case MFF_ICMPV4_CODE: |
1219 | case MFF_ICMPV6_CODE: | |
81a76618 | 1220 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
1221 | break; |
1222 | ||
1223 | case MFF_ND_TARGET: | |
81a76618 | 1224 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
1225 | break; |
1226 | ||
1227 | case MFF_N_IDS: | |
1228 | default: | |
1229 | NOT_REACHED(); | |
1230 | } | |
1231 | } | |
1232 | ||
81a76618 BP |
1233 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1234 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
28da1f8f BP |
1235 | * prerequisites. */ |
1236 | void | |
1237 | mf_set_flow_value(const struct mf_field *mf, | |
1238 | const union mf_value *value, struct flow *flow) | |
1239 | { | |
1240 | switch (mf->id) { | |
1241 | case MFF_TUN_ID: | |
296e07ac | 1242 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 1243 | break; |
969fc56c JS |
1244 | case MFF_METADATA: |
1245 | flow->metadata = value->be64; | |
1246 | break; | |
28da1f8f BP |
1247 | |
1248 | case MFF_IN_PORT: | |
1249 | flow->in_port = ntohs(value->be16); | |
1250 | break; | |
1251 | ||
0d7e2fe4 | 1252 | CASE_MFF_REGS: |
28da1f8f BP |
1253 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
1254 | break; | |
28da1f8f BP |
1255 | |
1256 | case MFF_ETH_SRC: | |
1257 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
1258 | break; | |
1259 | ||
1260 | case MFF_ETH_DST: | |
b5a36e38 | 1261 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
1262 | break; |
1263 | ||
1264 | case MFF_ETH_TYPE: | |
1265 | flow->dl_type = value->be16; | |
1266 | break; | |
1267 | ||
1268 | case MFF_VLAN_TCI: | |
1269 | flow->vlan_tci = value->be16; | |
1270 | break; | |
1271 | ||
441c57a9 | 1272 | case MFF_DL_VLAN: |
fb0451d9 | 1273 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 1274 | break; |
cc34bc8c BP |
1275 | case MFF_VLAN_VID: |
1276 | flow_set_vlan_vid(flow, value->be16); | |
1277 | break; | |
28da1f8f | 1278 | |
441c57a9 | 1279 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1280 | case MFF_VLAN_PCP: |
28da1f8f BP |
1281 | flow_set_vlan_pcp(flow, value->u8); |
1282 | break; | |
1283 | ||
1284 | case MFF_IPV4_SRC: | |
1285 | flow->nw_src = value->be32; | |
1286 | break; | |
1287 | ||
1288 | case MFF_IPV4_DST: | |
1289 | flow->nw_dst = value->be32; | |
1290 | break; | |
1291 | ||
1292 | case MFF_IPV6_SRC: | |
1293 | flow->ipv6_src = value->ipv6; | |
1294 | break; | |
1295 | ||
1296 | case MFF_IPV6_DST: | |
1297 | flow->ipv6_dst = value->ipv6; | |
1298 | break; | |
1299 | ||
1300 | case MFF_IPV6_LABEL: | |
1301 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1302 | break; | |
1303 | ||
1304 | case MFF_IP_PROTO: | |
1305 | flow->nw_proto = value->u8; | |
1306 | break; | |
1307 | ||
1308 | case MFF_IP_DSCP: | |
1309 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1310 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1311 | break; | |
1312 | ||
1313 | case MFF_IP_ECN: | |
1314 | flow->nw_tos &= ~IP_ECN_MASK; | |
1315 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1316 | break; | |
1317 | ||
1318 | case MFF_IP_TTL: | |
1319 | flow->nw_ttl = value->u8; | |
1320 | break; | |
1321 | ||
1322 | case MFF_IP_FRAG: | |
1323 | flow->nw_frag &= value->u8; | |
1324 | break; | |
1325 | ||
1326 | case MFF_ARP_OP: | |
1327 | flow->nw_proto = ntohs(value->be16); | |
1328 | break; | |
1329 | ||
1330 | case MFF_ARP_SPA: | |
1331 | flow->nw_src = value->be32; | |
1332 | break; | |
1333 | ||
1334 | case MFF_ARP_TPA: | |
1335 | flow->nw_dst = value->be32; | |
1336 | break; | |
1337 | ||
1338 | case MFF_ARP_SHA: | |
1339 | case MFF_ND_SLL: | |
1340 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1341 | break; | |
1342 | ||
1343 | case MFF_ARP_THA: | |
1344 | case MFF_ND_TLL: | |
1345 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1346 | break; | |
1347 | ||
1348 | case MFF_TCP_SRC: | |
1349 | case MFF_UDP_SRC: | |
1350 | flow->tp_src = value->be16; | |
1351 | break; | |
1352 | ||
1353 | case MFF_TCP_DST: | |
1354 | case MFF_UDP_DST: | |
1355 | flow->tp_dst = value->be16; | |
1356 | break; | |
1357 | ||
1358 | case MFF_ICMPV4_TYPE: | |
1359 | case MFF_ICMPV6_TYPE: | |
1360 | flow->tp_src = htons(value->u8); | |
1361 | break; | |
1362 | ||
1363 | case MFF_ICMPV4_CODE: | |
1364 | case MFF_ICMPV6_CODE: | |
1365 | flow->tp_dst = htons(value->u8); | |
1366 | break; | |
1367 | ||
1368 | case MFF_ND_TARGET: | |
1369 | flow->nd_target = value->ipv6; | |
1370 | break; | |
1371 | ||
1372 | case MFF_N_IDS: | |
1373 | default: | |
1374 | NOT_REACHED(); | |
1375 | } | |
1376 | } | |
1377 | ||
ccbe50f8 BP |
1378 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1379 | * | |
1380 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1381 | * prerequisites. */ | |
1382 | bool | |
1383 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1384 | { | |
1385 | union mf_value value; | |
1386 | ||
1387 | mf_get_value(mf, flow, &value); | |
1388 | return is_all_zeros((const uint8_t *) &value, mf->n_bytes); | |
1389 | } | |
1390 | ||
81a76618 | 1391 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1392 | * |
81a76618 | 1393 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1394 | * prerequisites. */ |
1395 | void | |
81a76618 | 1396 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1397 | { |
1398 | switch (mf->id) { | |
1399 | case MFF_TUN_ID: | |
81a76618 | 1400 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1401 | break; |
969fc56c | 1402 | case MFF_METADATA: |
81a76618 | 1403 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
6a885fd0 BP |
1404 | |
1405 | case MFF_IN_PORT: | |
81a76618 BP |
1406 | match->flow.in_port = 0; |
1407 | match->wc.masks.in_port = 0; | |
6a885fd0 BP |
1408 | break; |
1409 | ||
0d7e2fe4 | 1410 | CASE_MFF_REGS: |
81a76618 | 1411 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1412 | break; |
6a885fd0 BP |
1413 | |
1414 | case MFF_ETH_SRC: | |
81a76618 BP |
1415 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1416 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1417 | break; |
1418 | ||
1419 | case MFF_ETH_DST: | |
81a76618 BP |
1420 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1421 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1422 | break; |
1423 | ||
1424 | case MFF_ETH_TYPE: | |
81a76618 BP |
1425 | match->flow.dl_type = htons(0); |
1426 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1427 | break; |
1428 | ||
1429 | case MFF_VLAN_TCI: | |
81a76618 | 1430 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1431 | break; |
1432 | ||
441c57a9 | 1433 | case MFF_DL_VLAN: |
cc34bc8c | 1434 | case MFF_VLAN_VID: |
81a76618 | 1435 | match_set_any_vid(match); |
6a885fd0 BP |
1436 | break; |
1437 | ||
441c57a9 | 1438 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1439 | case MFF_VLAN_PCP: |
81a76618 | 1440 | match_set_any_pcp(match); |
6a885fd0 BP |
1441 | break; |
1442 | ||
1443 | case MFF_IPV4_SRC: | |
1444 | case MFF_ARP_SPA: | |
81a76618 | 1445 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1446 | break; |
1447 | ||
1448 | case MFF_IPV4_DST: | |
1449 | case MFF_ARP_TPA: | |
81a76618 | 1450 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1451 | break; |
1452 | ||
1453 | case MFF_IPV6_SRC: | |
81a76618 BP |
1454 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1455 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1456 | break; |
1457 | ||
1458 | case MFF_IPV6_DST: | |
81a76618 BP |
1459 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1460 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1461 | break; |
1462 | ||
fa8223b7 | 1463 | case MFF_IPV6_LABEL: |
81a76618 BP |
1464 | match->wc.masks.ipv6_label = htonl(0); |
1465 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1466 | break; |
1467 | ||
6a885fd0 | 1468 | case MFF_IP_PROTO: |
81a76618 BP |
1469 | match->wc.masks.nw_proto = 0; |
1470 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1471 | break; |
1472 | ||
530180fd | 1473 | case MFF_IP_DSCP: |
81a76618 BP |
1474 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1475 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1476 | break; |
1477 | ||
530180fd | 1478 | case MFF_IP_ECN: |
81a76618 BP |
1479 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1480 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1481 | break; |
1482 | ||
a61680c6 | 1483 | case MFF_IP_TTL: |
81a76618 BP |
1484 | match->wc.masks.nw_ttl = 0; |
1485 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1486 | break; |
1487 | ||
7257b535 | 1488 | case MFF_IP_FRAG: |
81a76618 BP |
1489 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1490 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1491 | break; |
1492 | ||
1493 | case MFF_ARP_OP: | |
81a76618 BP |
1494 | match->wc.masks.nw_proto = 0; |
1495 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1496 | break; |
1497 | ||
1498 | case MFF_ARP_SHA: | |
1499 | case MFF_ND_SLL: | |
81a76618 BP |
1500 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1501 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1502 | break; |
1503 | ||
1504 | case MFF_ARP_THA: | |
1505 | case MFF_ND_TLL: | |
81a76618 BP |
1506 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1507 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1508 | break; |
1509 | ||
1510 | case MFF_TCP_SRC: | |
1511 | case MFF_UDP_SRC: | |
268a95e0 BP |
1512 | case MFF_ICMPV4_TYPE: |
1513 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1514 | match->wc.masks.tp_src = htons(0); |
1515 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1516 | break; |
1517 | ||
1518 | case MFF_TCP_DST: | |
1519 | case MFF_UDP_DST: | |
268a95e0 BP |
1520 | case MFF_ICMPV4_CODE: |
1521 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1522 | match->wc.masks.tp_dst = htons(0); |
1523 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1524 | break; |
1525 | ||
1526 | case MFF_ND_TARGET: | |
81a76618 BP |
1527 | memset(&match->wc.masks.nd_target, 0, |
1528 | sizeof match->wc.masks.nd_target); | |
1529 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1530 | break; |
1531 | ||
1532 | case MFF_N_IDS: | |
1533 | default: | |
1534 | NOT_REACHED(); | |
1535 | } | |
1536 | } | |
1537 | ||
81a76618 | 1538 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1539 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1540 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1541 | * 0-bit indicating a don't-care. | |
1542 | * | |
1543 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1544 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1545 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1546 | * |
1547 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1548 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
6a885fd0 BP |
1549 | void |
1550 | mf_set(const struct mf_field *mf, | |
1551 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1552 | struct match *match) |
6a885fd0 BP |
1553 | { |
1554 | if (!mask || is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1555 | mf_set_value(mf, value, match); |
6a885fd0 BP |
1556 | return; |
1557 | } else if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1558 | mf_set_wild(mf, match); |
6a885fd0 BP |
1559 | return; |
1560 | } | |
1561 | ||
1562 | switch (mf->id) { | |
1563 | case MFF_IN_PORT: | |
6a885fd0 | 1564 | case MFF_ETH_TYPE: |
441c57a9 BP |
1565 | case MFF_DL_VLAN: |
1566 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1567 | case MFF_VLAN_PCP: |
6a885fd0 | 1568 | case MFF_IP_PROTO: |
a61680c6 | 1569 | case MFF_IP_TTL: |
530180fd JP |
1570 | case MFF_IP_DSCP: |
1571 | case MFF_IP_ECN: | |
6a885fd0 | 1572 | case MFF_ARP_OP: |
268a95e0 BP |
1573 | case MFF_ICMPV4_TYPE: |
1574 | case MFF_ICMPV4_CODE: | |
1575 | case MFF_ICMPV6_TYPE: | |
1576 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1577 | NOT_REACHED(); |
1578 | ||
1579 | case MFF_TUN_ID: | |
81a76618 | 1580 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1581 | break; |
969fc56c | 1582 | case MFF_METADATA: |
81a76618 | 1583 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1584 | break; |
6a885fd0 | 1585 | |
0d7e2fe4 | 1586 | CASE_MFF_REGS: |
81a76618 BP |
1587 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1588 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 BP |
1589 | break; |
1590 | ||
1591 | case MFF_ETH_DST: | |
81a76618 | 1592 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1593 | break; |
1594 | ||
1595 | case MFF_ETH_SRC: | |
81a76618 | 1596 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1597 | break; |
1598 | ||
e878338b SH |
1599 | case MFF_ARP_SHA: |
1600 | case MFF_ND_SLL: | |
81a76618 | 1601 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1602 | break; |
1603 | ||
1604 | case MFF_ARP_THA: | |
1605 | case MFF_ND_TLL: | |
81a76618 | 1606 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1607 | break; |
1608 | ||
6a885fd0 | 1609 | case MFF_VLAN_TCI: |
81a76618 | 1610 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1611 | break; |
1612 | ||
cc34bc8c | 1613 | case MFF_VLAN_VID: |
81a76618 | 1614 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1615 | break; |
1616 | ||
6a885fd0 | 1617 | case MFF_IPV4_SRC: |
81a76618 | 1618 | match_set_nw_src_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1619 | break; |
1620 | ||
1621 | case MFF_IPV4_DST: | |
81a76618 | 1622 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1623 | break; |
1624 | ||
1625 | case MFF_IPV6_SRC: | |
81a76618 | 1626 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1627 | break; |
1628 | ||
1629 | case MFF_IPV6_DST: | |
81a76618 | 1630 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1631 | break; |
1632 | ||
32455024 SH |
1633 | case MFF_IPV6_LABEL: |
1634 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1635 | mf_set_value(mf, value, match); |
32455024 | 1636 | } else { |
81a76618 | 1637 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1638 | } |
1639 | break; | |
1640 | ||
47284b1f | 1641 | case MFF_ND_TARGET: |
81a76618 | 1642 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1643 | break; |
1644 | ||
7257b535 | 1645 | case MFF_IP_FRAG: |
81a76618 | 1646 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1647 | break; |
1648 | ||
6a885fd0 | 1649 | case MFF_ARP_SPA: |
81a76618 | 1650 | match_set_nw_src_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1651 | break; |
1652 | ||
1653 | case MFF_ARP_TPA: | |
81a76618 | 1654 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1655 | break; |
1656 | ||
73f33563 BP |
1657 | case MFF_TCP_SRC: |
1658 | case MFF_UDP_SRC: | |
81a76618 | 1659 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1660 | break; |
1661 | ||
1662 | case MFF_TCP_DST: | |
1663 | case MFF_UDP_DST: | |
81a76618 | 1664 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1665 | break; |
1666 | ||
6a885fd0 BP |
1667 | case MFF_N_IDS: |
1668 | default: | |
1669 | NOT_REACHED(); | |
1670 | } | |
1671 | } | |
1672 | ||
816fd533 BP |
1673 | static enum ofperr |
1674 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1675 | const char *type) | |
6a885fd0 | 1676 | { |
816fd533 BP |
1677 | if (!sf->field) { |
1678 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
1679 | } else if (!sf->n_bits) { | |
1680 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
1681 | } else if (sf->ofs >= sf->field->n_bits) { | |
1682 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1683 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
1684 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { | |
1685 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1686 | "of %s field %s", sf->ofs, sf->n_bits, | |
1687 | sf->field->n_bits, type, sf->field->name); | |
1688 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { | |
1689 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1690 | type, sf->field->name); | |
6a885fd0 | 1691 | } else { |
816fd533 BP |
1692 | return 0; |
1693 | } | |
6a885fd0 | 1694 | |
816fd533 BP |
1695 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1696 | } | |
6a885fd0 | 1697 | |
816fd533 BP |
1698 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1699 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1700 | * ofp_mkerr()). */ | |
1701 | enum ofperr | |
1702 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1703 | { | |
1704 | return mf_check__(sf, flow, "source"); | |
1705 | } | |
6a885fd0 | 1706 | |
816fd533 BP |
1707 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1708 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1709 | * ofp_mkerr()). */ | |
1710 | enum ofperr | |
1711 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1712 | { | |
1713 | int error = mf_check__(sf, flow, "destination"); | |
1714 | if (!error && !sf->field->writable) { | |
1715 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1716 | sf->field->name); | |
1717 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6a885fd0 | 1718 | } |
816fd533 | 1719 | return error; |
6a885fd0 BP |
1720 | } |
1721 | ||
81a76618 | 1722 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1723 | * 'value' and 'mask', respectively. */ |
1724 | void | |
81a76618 | 1725 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1726 | union mf_value *value, union mf_value *mask) |
1727 | { | |
81a76618 BP |
1728 | mf_get_value(mf, &match->flow, value); |
1729 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1730 | } |
1731 | ||
1732 | /* Assigns a random value for field 'mf' to 'value'. */ | |
1733 | void | |
1734 | mf_random_value(const struct mf_field *mf, union mf_value *value) | |
1735 | { | |
1736 | random_bytes(value, mf->n_bytes); | |
1737 | ||
1738 | switch (mf->id) { | |
1739 | case MFF_TUN_ID: | |
969fc56c | 1740 | case MFF_METADATA: |
6a885fd0 | 1741 | case MFF_IN_PORT: |
0d7e2fe4 | 1742 | CASE_MFF_REGS: |
6a885fd0 BP |
1743 | case MFF_ETH_SRC: |
1744 | case MFF_ETH_DST: | |
1745 | case MFF_ETH_TYPE: | |
1746 | case MFF_VLAN_TCI: | |
1747 | case MFF_IPV4_SRC: | |
1748 | case MFF_IPV4_DST: | |
1749 | case MFF_IPV6_SRC: | |
1750 | case MFF_IPV6_DST: | |
1751 | case MFF_IP_PROTO: | |
a61680c6 | 1752 | case MFF_IP_TTL: |
6a885fd0 BP |
1753 | case MFF_ARP_SPA: |
1754 | case MFF_ARP_TPA: | |
1755 | case MFF_ARP_SHA: | |
1756 | case MFF_ARP_THA: | |
1757 | case MFF_TCP_SRC: | |
1758 | case MFF_TCP_DST: | |
1759 | case MFF_UDP_SRC: | |
1760 | case MFF_UDP_DST: | |
268a95e0 BP |
1761 | case MFF_ICMPV4_TYPE: |
1762 | case MFF_ICMPV4_CODE: | |
1763 | case MFF_ICMPV6_TYPE: | |
1764 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1765 | case MFF_ND_TARGET: |
1766 | case MFF_ND_SLL: | |
1767 | case MFF_ND_TLL: | |
1768 | break; | |
1769 | ||
fa8223b7 JP |
1770 | case MFF_IPV6_LABEL: |
1771 | value->be32 &= ~htonl(IPV6_LABEL_MASK); | |
1772 | break; | |
1773 | ||
530180fd JP |
1774 | case MFF_IP_DSCP: |
1775 | value->u8 &= IP_DSCP_MASK; | |
1776 | break; | |
1777 | ||
1778 | case MFF_IP_ECN: | |
1779 | value->u8 &= IP_ECN_MASK; | |
6a885fd0 BP |
1780 | break; |
1781 | ||
7257b535 | 1782 | case MFF_IP_FRAG: |
eadef313 | 1783 | value->u8 &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
1784 | break; |
1785 | ||
6a885fd0 BP |
1786 | case MFF_ARP_OP: |
1787 | value->be16 &= htons(0xff); | |
1788 | break; | |
1789 | ||
441c57a9 | 1790 | case MFF_DL_VLAN: |
6a885fd0 BP |
1791 | value->be16 &= htons(VLAN_VID_MASK); |
1792 | break; | |
cc34bc8c BP |
1793 | case MFF_VLAN_VID: |
1794 | value->be16 &= htons(VLAN_VID_MASK | VLAN_CFI); | |
1795 | break; | |
6a885fd0 | 1796 | |
441c57a9 | 1797 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1798 | case MFF_VLAN_PCP: |
6a885fd0 BP |
1799 | value->u8 &= 0x07; |
1800 | break; | |
1801 | ||
1802 | case MFF_N_IDS: | |
1803 | default: | |
1804 | NOT_REACHED(); | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | static char * | |
1809 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1810 | uint8_t *valuep, uint8_t *maskp) | |
1811 | { | |
1812 | unsigned long long int integer, mask; | |
1813 | char *tail; | |
1814 | int i; | |
1815 | ||
1816 | errno = 0; | |
1817 | integer = strtoull(s, &tail, 0); | |
1818 | if (errno || (*tail != '\0' && *tail != '/')) { | |
1819 | goto syntax_error; | |
1820 | } | |
1821 | ||
1822 | if (*tail == '/') { | |
1823 | mask = strtoull(tail + 1, &tail, 0); | |
1824 | if (errno || *tail != '\0') { | |
1825 | goto syntax_error; | |
1826 | } | |
1827 | } else { | |
1828 | mask = ULLONG_MAX; | |
1829 | } | |
1830 | ||
1831 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
1832 | valuep[i] = integer; | |
1833 | maskp[i] = mask; | |
1834 | integer >>= 8; | |
1835 | mask >>= 8; | |
1836 | } | |
1837 | if (integer) { | |
1838 | return xasprintf("%s: value too large for %u-byte field %s", | |
1839 | s, mf->n_bytes, mf->name); | |
1840 | } | |
1841 | return NULL; | |
1842 | ||
1843 | syntax_error: | |
1844 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
1845 | } | |
1846 | ||
1847 | static char * | |
1848 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1849 | uint8_t mac[ETH_ADDR_LEN], | |
1850 | uint8_t mask[ETH_ADDR_LEN]) | |
1851 | { | |
1852 | assert(mf->n_bytes == ETH_ADDR_LEN); | |
1853 | ||
1854 | switch (sscanf(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT, | |
1855 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask))){ | |
1856 | case ETH_ADDR_SCAN_COUNT * 2: | |
1857 | return NULL; | |
1858 | ||
1859 | case ETH_ADDR_SCAN_COUNT: | |
1860 | memset(mask, 0xff, ETH_ADDR_LEN); | |
1861 | return NULL; | |
1862 | ||
1863 | default: | |
1864 | return xasprintf("%s: invalid Ethernet address", s); | |
1865 | } | |
1866 | } | |
1867 | ||
1868 | static char * | |
1869 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1870 | ovs_be32 *ip, ovs_be32 *mask) | |
1871 | { | |
1872 | int prefix; | |
1873 | ||
1874 | assert(mf->n_bytes == sizeof *ip); | |
1875 | ||
1876 | if (sscanf(s, IP_SCAN_FMT"/"IP_SCAN_FMT, | |
1877 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask)) == IP_SCAN_COUNT * 2) { | |
1878 | /* OK. */ | |
1879 | } else if (sscanf(s, IP_SCAN_FMT"/%d", | |
1880 | IP_SCAN_ARGS(ip), &prefix) == IP_SCAN_COUNT + 1) { | |
1881 | if (prefix <= 0 || prefix > 32) { | |
1882 | return xasprintf("%s: network prefix bits not between 1 and " | |
1883 | "32", s); | |
1884 | } else if (prefix == 32) { | |
1885 | *mask = htonl(UINT32_MAX); | |
1886 | } else { | |
1887 | *mask = htonl(((1u << prefix) - 1) << (32 - prefix)); | |
1888 | } | |
1889 | } else if (sscanf(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip)) == IP_SCAN_COUNT) { | |
1890 | *mask = htonl(UINT32_MAX); | |
1891 | } else { | |
1892 | return xasprintf("%s: invalid IP address", s); | |
1893 | } | |
1894 | return NULL; | |
1895 | } | |
1896 | ||
1897 | static char * | |
1898 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1899 | struct in6_addr *value, struct in6_addr *mask) | |
1900 | { | |
1901 | char *str = xstrdup(s); | |
1902 | char *save_ptr = NULL; | |
1903 | const char *name, *netmask; | |
1904 | int retval; | |
1905 | ||
1906 | assert(mf->n_bytes == sizeof *value); | |
1907 | ||
1908 | name = strtok_r(str, "/", &save_ptr); | |
1909 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1910 | if (retval) { | |
1911 | char *err; | |
1912 | ||
1913 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1914 | free(str); | |
1915 | ||
1916 | return err; | |
1917 | } | |
1918 | ||
1919 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1920 | if (netmask) { | |
ff0b06ee BP |
1921 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
1922 | int prefix = atoi(netmask); | |
1923 | if (prefix <= 0 || prefix > 128) { | |
1924 | free(str); | |
1925 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
1926 | } else { | |
1927 | *mask = ipv6_create_mask(prefix); | |
1928 | } | |
6a885fd0 BP |
1929 | } |
1930 | } else { | |
1931 | *mask = in6addr_exact; | |
1932 | } | |
1933 | free(str); | |
1934 | ||
1935 | return NULL; | |
1936 | } | |
1937 | ||
1938 | static char * | |
1939 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
1940 | ovs_be16 *valuep, ovs_be16 *maskp) | |
1941 | { | |
1942 | uint16_t port; | |
1943 | ||
1944 | assert(mf->n_bytes == sizeof(ovs_be16)); | |
8010100b | 1945 | if (ofputil_port_from_string(s, &port)) { |
6a885fd0 BP |
1946 | *valuep = htons(port); |
1947 | *maskp = htons(UINT16_MAX); | |
1948 | return NULL; | |
1949 | } else { | |
1950 | return mf_from_integer_string(mf, s, | |
1951 | (uint8_t *) valuep, (uint8_t *) maskp); | |
1952 | } | |
1953 | } | |
1954 | ||
7257b535 BP |
1955 | struct frag_handling { |
1956 | const char *name; | |
1957 | uint8_t mask; | |
1958 | uint8_t value; | |
1959 | }; | |
1960 | ||
1961 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
1962 | #define A FLOW_NW_FRAG_ANY |
1963 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
1964 | /* name mask value */ |
1965 | ||
1966 | { "no", A|L, 0 }, | |
1967 | { "first", A|L, A }, | |
1968 | { "later", A|L, A|L }, | |
1969 | ||
1970 | { "no", A, 0 }, | |
1971 | { "yes", A, A }, | |
1972 | ||
1973 | { "not_later", L, 0 }, | |
1974 | { "later", L, L }, | |
1975 | #undef A | |
1976 | #undef L | |
1977 | }; | |
1978 | ||
1979 | static char * | |
1980 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
1981 | { | |
1982 | const struct frag_handling *h; | |
1983 | ||
1984 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
1985 | if (!strcasecmp(s, h->name)) { | |
1986 | /* We force the upper bits of the mask on to make mf_parse_value() | |
1987 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 1988 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
1989 | *valuep = h->value; |
1990 | return NULL; | |
1991 | } | |
1992 | } | |
1993 | ||
1994 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
1995 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
1996 | } | |
1997 | ||
6a885fd0 BP |
1998 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
1999 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
2000 | char * | |
2001 | mf_parse(const struct mf_field *mf, const char *s, | |
2002 | union mf_value *value, union mf_value *mask) | |
2003 | { | |
2004 | if (!strcasecmp(s, "any") || !strcmp(s, "*")) { | |
2005 | memset(value, 0, mf->n_bytes); | |
2006 | memset(mask, 0, mf->n_bytes); | |
2007 | return NULL; | |
2008 | } | |
2009 | ||
2010 | switch (mf->string) { | |
2011 | case MFS_DECIMAL: | |
2012 | case MFS_HEXADECIMAL: | |
2013 | return mf_from_integer_string(mf, s, | |
2014 | (uint8_t *) value, (uint8_t *) mask); | |
2015 | ||
2016 | case MFS_ETHERNET: | |
2017 | return mf_from_ethernet_string(mf, s, value->mac, mask->mac); | |
2018 | ||
2019 | case MFS_IPV4: | |
2020 | return mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); | |
2021 | ||
2022 | case MFS_IPV6: | |
2023 | return mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); | |
2024 | ||
2025 | case MFS_OFP_PORT: | |
2026 | return mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); | |
7257b535 BP |
2027 | |
2028 | case MFS_FRAG: | |
2029 | return mf_from_frag_string(s, &value->u8, &mask->u8); | |
6a885fd0 BP |
2030 | } |
2031 | NOT_REACHED(); | |
2032 | } | |
2033 | ||
2034 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2035 | * successful, otherwise a malloc()'d string describing the error. */ | |
2036 | char * | |
2037 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2038 | { | |
2039 | union mf_value mask; | |
2040 | char *error; | |
2041 | ||
2042 | error = mf_parse(mf, s, value, &mask); | |
2043 | if (error) { | |
2044 | return error; | |
2045 | } | |
2046 | ||
2047 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2048 | return xasprintf("%s: wildcards not allowed here", s); | |
2049 | } | |
2050 | return NULL; | |
2051 | } | |
2052 | ||
2053 | static void | |
2054 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2055 | const uint8_t *maskp, struct ds *s) | |
2056 | { | |
2057 | unsigned long long int integer; | |
2058 | int i; | |
2059 | ||
2060 | assert(mf->n_bytes <= 8); | |
2061 | ||
2062 | integer = 0; | |
2063 | for (i = 0; i < mf->n_bytes; i++) { | |
2064 | integer = (integer << 8) | valuep[i]; | |
2065 | } | |
2066 | if (mf->string == MFS_HEXADECIMAL) { | |
2067 | ds_put_format(s, "%#llx", integer); | |
2068 | } else { | |
2069 | ds_put_format(s, "%lld", integer); | |
2070 | } | |
2071 | ||
2072 | if (maskp) { | |
2073 | unsigned long long int mask; | |
2074 | ||
2075 | mask = 0; | |
2076 | for (i = 0; i < mf->n_bytes; i++) { | |
2077 | mask = (mask << 8) | maskp[i]; | |
2078 | } | |
2079 | ||
2080 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2081 | * not sure that that a bit-mask written in decimal is ever easier to | |
2082 | * understand than the same bit-mask written in hexadecimal. */ | |
2083 | ds_put_format(s, "/%#llx", mask); | |
2084 | } | |
2085 | } | |
2086 | ||
7257b535 BP |
2087 | static void |
2088 | mf_format_frag_string(const uint8_t *valuep, const uint8_t *maskp, | |
2089 | struct ds *s) | |
2090 | { | |
2091 | const struct frag_handling *h; | |
2092 | uint8_t value = *valuep; | |
2093 | uint8_t mask = *maskp; | |
2094 | ||
2095 | value &= mask; | |
eadef313 | 2096 | mask &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
2097 | |
2098 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2099 | if (value == h->value && mask == h->mask) { | |
2100 | ds_put_cstr(s, h->name); | |
2101 | return; | |
2102 | } | |
2103 | } | |
2104 | ds_put_cstr(s, "<error>"); | |
2105 | } | |
2106 | ||
6a885fd0 BP |
2107 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2108 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2109 | void | |
2110 | mf_format(const struct mf_field *mf, | |
2111 | const union mf_value *value, const union mf_value *mask, | |
2112 | struct ds *s) | |
2113 | { | |
2114 | if (mask) { | |
2115 | if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
2116 | ds_put_cstr(s, "ANY"); | |
2117 | return; | |
2118 | } else if (is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
2119 | mask = NULL; | |
2120 | } | |
2121 | } | |
2122 | ||
2123 | switch (mf->string) { | |
2124 | case MFS_OFP_PORT: | |
2125 | if (!mask) { | |
2126 | ofputil_format_port(ntohs(value->be16), s); | |
2127 | break; | |
2128 | } | |
2129 | /* fall through */ | |
2130 | case MFS_DECIMAL: | |
2131 | case MFS_HEXADECIMAL: | |
2132 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2133 | break; | |
2134 | ||
2135 | case MFS_ETHERNET: | |
3b4d8ad3 | 2136 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2137 | break; |
2138 | ||
2139 | case MFS_IPV4: | |
2140 | ip_format_masked(value->be32, mask ? mask->be32 : htonl(UINT32_MAX), | |
2141 | s); | |
2142 | break; | |
2143 | ||
2144 | case MFS_IPV6: | |
2145 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2146 | break; | |
2147 | ||
7257b535 BP |
2148 | case MFS_FRAG: |
2149 | mf_format_frag_string(&value->u8, &mask->u8, s); | |
2150 | break; | |
2151 | ||
6a885fd0 BP |
2152 | default: |
2153 | NOT_REACHED(); | |
2154 | } | |
2155 | } | |
816fd533 | 2156 | \f |
9bab681f IY |
2157 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2158 | * least-significant bits in 'x'. | |
2159 | */ | |
2160 | void | |
2161 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2162 | const union mf_subvalue *x, struct flow *flow) | |
2163 | { | |
2164 | const struct mf_field *field = sf->field; | |
2165 | union mf_value value; | |
2166 | ||
2167 | mf_get_value(field, flow, &value); | |
158edc8d | 2168 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2169 | sf->ofs, sf->n_bits); |
2170 | mf_set_flow_value(field, &value, flow); | |
2171 | } | |
2172 | ||
81a76618 | 2173 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2174 | * least-significant bits in 'x'. |
615660a9 | 2175 | */ |
1b35df45 BP |
2176 | void |
2177 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2178 | struct match *match) |
1b35df45 BP |
2179 | { |
2180 | const struct mf_field *field = sf->field; | |
2181 | union mf_value value, mask; | |
2182 | ||
81a76618 | 2183 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2184 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2185 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2186 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2187 | } |
2188 | ||
1b35df45 BP |
2189 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2190 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2191 | void | |
2192 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2193 | union mf_subvalue *x) | |
2194 | { | |
2195 | union mf_value value; | |
2196 | ||
2197 | mf_get_value(sf->field, flow, &value); | |
2198 | ||
2199 | memset(x, 0, sizeof *x); | |
2200 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2201 | x, sizeof *x, 0, | |
2202 | sf->n_bits); | |
2203 | } | |
2204 | ||
816fd533 BP |
2205 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2206 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2207 | * less. */ | |
2208 | uint64_t | |
2209 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2210 | { | |
2211 | union mf_value value; | |
2212 | ||
2213 | mf_get_value(sf->field, flow, &value); | |
2214 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2215 | } | |
2216 | ||
2217 | /* Formats 'sf' into 's' in a format normally acceptable to | |
2218 | * mf_parse_subfield(). (It won't be acceptable if sf->field is NULL or if | |
2219 | * sf->field has no NXM name.) */ | |
2220 | void | |
2221 | mf_format_subfield(const struct mf_subfield *sf, struct ds *s) | |
2222 | { | |
2223 | if (!sf->field) { | |
2224 | ds_put_cstr(s, "<unknown>"); | |
2225 | } else if (sf->field->nxm_name) { | |
2226 | ds_put_cstr(s, sf->field->nxm_name); | |
2227 | } else if (sf->field->nxm_header) { | |
2228 | uint32_t header = sf->field->nxm_header; | |
2229 | ds_put_format(s, "%d:%d", NXM_VENDOR(header), NXM_FIELD(header)); | |
2230 | } else { | |
2231 | ds_put_cstr(s, sf->field->name); | |
2232 | } | |
2233 | ||
33500edd | 2234 | if (sf->field && sf->ofs == 0 && sf->n_bits == sf->field->n_bits) { |
816fd533 BP |
2235 | ds_put_cstr(s, "[]"); |
2236 | } else if (sf->n_bits == 1) { | |
2237 | ds_put_format(s, "[%d]", sf->ofs); | |
2238 | } else { | |
2239 | ds_put_format(s, "[%d..%d]", sf->ofs, sf->ofs + sf->n_bits - 1); | |
2240 | } | |
2241 | } | |
2242 | ||
2243 | static const struct mf_field * | |
2244 | mf_parse_subfield_name(const char *name, int name_len, bool *wild) | |
2245 | { | |
2246 | int i; | |
2247 | ||
2248 | *wild = name_len > 2 && !memcmp(&name[name_len - 2], "_W", 2); | |
2249 | if (*wild) { | |
2250 | name_len -= 2; | |
2251 | } | |
2252 | ||
2253 | for (i = 0; i < MFF_N_IDS; i++) { | |
2254 | const struct mf_field *mf = mf_from_id(i); | |
2255 | ||
2256 | if (mf->nxm_name | |
2257 | && !strncmp(mf->nxm_name, name, name_len) | |
2258 | && mf->nxm_name[name_len] == '\0') { | |
2259 | return mf; | |
2260 | } | |
b5e5143b BP |
2261 | if (mf->oxm_name |
2262 | && !strncmp(mf->oxm_name, name, name_len) | |
2263 | && mf->oxm_name[name_len] == '\0') { | |
2264 | return mf; | |
2265 | } | |
816fd533 BP |
2266 | } |
2267 | ||
2268 | return NULL; | |
2269 | } | |
2270 | ||
2271 | /* Parses a subfield from the beginning of '*sp' into 'sf'. If successful, | |
2272 | * returns NULL and advances '*sp' to the first byte following the parsed | |
2273 | * string. On failure, returns a malloc()'d error message, does not modify | |
2274 | * '*sp', and does not properly initialize 'sf'. | |
2275 | * | |
2276 | * The syntax parsed from '*sp' takes the form "header[start..end]" where | |
2277 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2278 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2279 | * may both be omitted (the [] are still required) to indicate an entire | |
2280 | * field. */ | |
2281 | char * | |
2282 | mf_parse_subfield__(struct mf_subfield *sf, const char **sp) | |
2283 | { | |
2284 | const struct mf_field *field; | |
2285 | const char *name; | |
2286 | int start, end; | |
2287 | const char *s; | |
2288 | int name_len; | |
2289 | bool wild; | |
2290 | ||
2291 | s = *sp; | |
2292 | name = s; | |
2293 | name_len = strcspn(s, "["); | |
2294 | if (s[name_len] != '[') { | |
2295 | return xasprintf("%s: missing [ looking for field name", *sp); | |
2296 | } | |
2297 | ||
2298 | field = mf_parse_subfield_name(name, name_len, &wild); | |
2299 | if (!field) { | |
2300 | return xasprintf("%s: unknown field `%.*s'", *sp, name_len, s); | |
2301 | } | |
2302 | ||
2303 | s += name_len; | |
2304 | if (sscanf(s, "[%d..%d]", &start, &end) == 2) { | |
2305 | /* Nothing to do. */ | |
2306 | } else if (sscanf(s, "[%d]", &start) == 1) { | |
2307 | end = start; | |
2308 | } else if (!strncmp(s, "[]", 2)) { | |
2309 | start = 0; | |
2310 | end = field->n_bits - 1; | |
2311 | } else { | |
2312 | return xasprintf("%s: syntax error expecting [] or [<bit>] or " | |
2313 | "[<start>..<end>]", *sp); | |
2314 | } | |
2315 | s = strchr(s, ']') + 1; | |
2316 | ||
2317 | if (start > end) { | |
2318 | return xasprintf("%s: starting bit %d is after ending bit %d", | |
2319 | *sp, start, end); | |
2320 | } else if (start >= field->n_bits) { | |
2321 | return xasprintf("%s: starting bit %d is not valid because field is " | |
2322 | "only %d bits wide", *sp, start, field->n_bits); | |
2323 | } else if (end >= field->n_bits){ | |
2324 | return xasprintf("%s: ending bit %d is not valid because field is " | |
2325 | "only %d bits wide", *sp, end, field->n_bits); | |
2326 | } | |
2327 | ||
2328 | sf->field = field; | |
2329 | sf->ofs = start; | |
2330 | sf->n_bits = end - start + 1; | |
2331 | ||
2332 | *sp = s; | |
2333 | return NULL; | |
2334 | } | |
2335 | ||
2336 | /* Parses a subfield from the beginning of 's' into 'sf'. Returns the first | |
2337 | * byte in 's' following the parsed string. | |
2338 | * | |
2339 | * Exits with an error message if 's' has incorrect syntax. | |
2340 | * | |
2341 | * The syntax parsed from 's' takes the form "header[start..end]" where | |
2342 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2343 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2344 | * may both be omitted (the [] are still required) to indicate an entire | |
2345 | * field. */ | |
2346 | const char * | |
2347 | mf_parse_subfield(struct mf_subfield *sf, const char *s) | |
2348 | { | |
2349 | char *msg = mf_parse_subfield__(sf, &s); | |
2350 | if (msg) { | |
2351 | ovs_fatal(0, "%s", msg); | |
2352 | } | |
2353 | return s; | |
2354 | } | |
9bab681f IY |
2355 | |
2356 | void | |
2357 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2358 | { | |
2359 | int i; | |
2360 | ||
2361 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2362 | if (subvalue->u8[i]) { | |
2363 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2364 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2365 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2366 | } | |
2367 | return; | |
2368 | } | |
2369 | } | |
2370 | ds_put_char(s, '0'); | |
2371 | } |