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Commit | Line | Data |
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6a885fd0 | 1 | /* |
cb22974d | 2 | * Copyright (c) 2011, 2012, 2013 Nicira, Inc. |
6a885fd0 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "meta-flow.h" | |
20 | ||
6a885fd0 BP |
21 | #include <errno.h> |
22 | #include <limits.h> | |
23 | #include <netinet/icmp6.h> | |
24 | #include <netinet/ip6.h> | |
25 | ||
26 | #include "classifier.h" | |
27 | #include "dynamic-string.h" | |
816fd533 | 28 | #include "ofp-errors.h" |
6a885fd0 BP |
29 | #include "ofp-util.h" |
30 | #include "packets.h" | |
31 | #include "random.h" | |
32 | #include "shash.h" | |
33 | #include "socket-util.h" | |
34 | #include "unaligned.h" | |
816fd533 BP |
35 | #include "vlog.h" |
36 | ||
37 | VLOG_DEFINE_THIS_MODULE(meta_flow); | |
6a885fd0 BP |
38 | |
39 | #define MF_FIELD_SIZES(MEMBER) \ | |
40 | sizeof ((union mf_value *)0)->MEMBER, \ | |
41 | 8 * sizeof ((union mf_value *)0)->MEMBER | |
42 | ||
43 | static const struct mf_field mf_fields[MFF_N_IDS] = { | |
44 | /* ## -------- ## */ | |
45 | /* ## metadata ## */ | |
46 | /* ## -------- ## */ | |
47 | ||
48 | { | |
49 | MFF_TUN_ID, "tun_id", NULL, | |
50 | MF_FIELD_SIZES(be64), | |
0bdc4bec | 51 | MFM_FULLY, |
6a885fd0 BP |
52 | MFS_HEXADECIMAL, |
53 | MFP_NONE, | |
28da1f8f BP |
54 | true, |
55 | NXM_NX_TUN_ID, "NXM_NX_TUN_ID", | |
2f2eb46c | 56 | OXM_OF_TUNNEL_ID, "OXM_OF_TUNNEL_ID", |
4fe3445a PS |
57 | }, { |
58 | MFF_TUN_SRC, "tun_src", NULL, | |
59 | MF_FIELD_SIZES(be32), | |
60 | MFM_NONE, | |
61 | MFS_IPV4, | |
62 | MFP_NONE, | |
63 | false, | |
64 | 0, NULL, | |
65 | 0, NULL, | |
66 | }, { | |
67 | MFF_TUN_DST, "tun_dst", NULL, | |
68 | MF_FIELD_SIZES(be32), | |
69 | MFM_NONE, | |
70 | MFS_IPV4, | |
71 | MFP_NONE, | |
72 | false, | |
73 | 0, NULL, | |
74 | 0, NULL, | |
75 | }, { | |
76 | MFF_TUN_FLAGS, "tun_flags", NULL, | |
77 | MF_FIELD_SIZES(be16), | |
78 | MFM_NONE, | |
79 | MFS_TNL_FLAGS, | |
80 | MFP_NONE, | |
81 | false, | |
82 | 0, NULL, | |
83 | 0, NULL, | |
84 | }, { | |
85 | MFF_TUN_TOS, "tun_tos", NULL, | |
86 | MF_FIELD_SIZES(u8), | |
87 | MFM_NONE, | |
88 | MFS_DECIMAL, | |
89 | MFP_NONE, | |
90 | false, | |
91 | 0, NULL, | |
92 | 0, NULL, | |
93 | }, { | |
94 | MFF_TUN_TTL, "tun_ttl", NULL, | |
95 | MF_FIELD_SIZES(u8), | |
96 | MFM_NONE, | |
97 | MFS_DECIMAL, | |
98 | MFP_NONE, | |
99 | false, | |
100 | 0, NULL, | |
101 | 0, NULL, | |
969fc56c JS |
102 | }, { |
103 | MFF_METADATA, "metadata", NULL, | |
104 | MF_FIELD_SIZES(be64), | |
0bdc4bec | 105 | MFM_FULLY, |
969fc56c JS |
106 | MFS_HEXADECIMAL, |
107 | MFP_NONE, | |
108 | true, | |
109 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
110 | OXM_OF_METADATA, "OXM_OF_METADATA", | |
6a885fd0 BP |
111 | }, { |
112 | MFF_IN_PORT, "in_port", NULL, | |
113 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 114 | MFM_NONE, |
6a885fd0 BP |
115 | MFS_OFP_PORT, |
116 | MFP_NONE, | |
28da1f8f BP |
117 | false, |
118 | NXM_OF_IN_PORT, "NXM_OF_IN_PORT", | |
36f3999b | 119 | OXM_OF_IN_PORT, "OXM_OF_IN_PORT", |
1b567fb9 AA |
120 | }, { |
121 | MFF_SKB_PRIORITY, "skb_priority", NULL, | |
122 | MF_FIELD_SIZES(be32), | |
123 | MFM_NONE, | |
124 | MFS_HEXADECIMAL, | |
125 | MFP_NONE, | |
126 | false, | |
127 | 0, NULL, | |
128 | 0, NULL, | |
129 | }, { | |
130 | MFF_SKB_MARK, "skb_mark", NULL, | |
131 | MF_FIELD_SIZES(be32), | |
132 | MFM_NONE, | |
133 | MFS_HEXADECIMAL, | |
134 | MFP_NONE, | |
135 | false, | |
136 | 0, NULL, | |
137 | 0, NULL, | |
6a885fd0 BP |
138 | }, |
139 | ||
140 | #define REGISTER(IDX) \ | |
141 | { \ | |
142 | MFF_REG##IDX, "reg" #IDX, NULL, \ | |
143 | MF_FIELD_SIZES(be32), \ | |
0bdc4bec | 144 | MFM_FULLY, \ |
6a885fd0 BP |
145 | MFS_HEXADECIMAL, \ |
146 | MFP_NONE, \ | |
28da1f8f | 147 | true, \ |
b5e5143b BP |
148 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ |
149 | NXM_NX_REG(IDX), "NXM_NX_REG" #IDX, \ | |
6a885fd0 BP |
150 | } |
151 | #if FLOW_N_REGS > 0 | |
152 | REGISTER(0), | |
153 | #endif | |
154 | #if FLOW_N_REGS > 1 | |
155 | REGISTER(1), | |
156 | #endif | |
157 | #if FLOW_N_REGS > 2 | |
158 | REGISTER(2), | |
159 | #endif | |
160 | #if FLOW_N_REGS > 3 | |
161 | REGISTER(3), | |
162 | #endif | |
163 | #if FLOW_N_REGS > 4 | |
d2c0fed9 JP |
164 | REGISTER(4), |
165 | #endif | |
166 | #if FLOW_N_REGS > 5 | |
e9358af6 EJ |
167 | REGISTER(5), |
168 | #endif | |
169 | #if FLOW_N_REGS > 6 | |
170 | REGISTER(6), | |
171 | #endif | |
172 | #if FLOW_N_REGS > 7 | |
173 | REGISTER(7), | |
174 | #endif | |
175 | #if FLOW_N_REGS > 8 | |
6a885fd0 BP |
176 | #error |
177 | #endif | |
178 | ||
179 | /* ## -- ## */ | |
180 | /* ## L2 ## */ | |
181 | /* ## -- ## */ | |
182 | ||
183 | { | |
184 | MFF_ETH_SRC, "eth_src", "dl_src", | |
185 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 186 | MFM_FULLY, |
6a885fd0 BP |
187 | MFS_ETHERNET, |
188 | MFP_NONE, | |
28da1f8f BP |
189 | true, |
190 | NXM_OF_ETH_SRC, "NXM_OF_ETH_SRC", | |
36f3999b | 191 | OXM_OF_ETH_SRC, "OXM_OF_ETH_SRC", |
6a885fd0 BP |
192 | }, { |
193 | MFF_ETH_DST, "eth_dst", "dl_dst", | |
194 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 195 | MFM_FULLY, |
6a885fd0 BP |
196 | MFS_ETHERNET, |
197 | MFP_NONE, | |
28da1f8f BP |
198 | true, |
199 | NXM_OF_ETH_DST, "NXM_OF_ETH_DST", | |
36f3999b | 200 | OXM_OF_ETH_DST, "OXM_OF_ETH_DST", |
6a885fd0 BP |
201 | }, { |
202 | MFF_ETH_TYPE, "eth_type", "dl_type", | |
203 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 204 | MFM_NONE, |
6a885fd0 BP |
205 | MFS_HEXADECIMAL, |
206 | MFP_NONE, | |
28da1f8f BP |
207 | false, |
208 | NXM_OF_ETH_TYPE, "NXM_OF_ETH_TYPE", | |
36f3999b | 209 | OXM_OF_ETH_TYPE, "OXM_OF_ETH_TYPE", |
6a885fd0 BP |
210 | }, |
211 | ||
212 | { | |
213 | MFF_VLAN_TCI, "vlan_tci", NULL, | |
214 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 215 | MFM_FULLY, |
6a885fd0 BP |
216 | MFS_HEXADECIMAL, |
217 | MFP_NONE, | |
28da1f8f BP |
218 | true, |
219 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", | |
b5e5143b | 220 | NXM_OF_VLAN_TCI, "NXM_OF_VLAN_TCI", |
6a885fd0 | 221 | }, { |
441c57a9 | 222 | MFF_DL_VLAN, "dl_vlan", NULL, |
6a885fd0 | 223 | sizeof(ovs_be16), 12, |
0bdc4bec | 224 | MFM_NONE, |
6a885fd0 BP |
225 | MFS_DECIMAL, |
226 | MFP_NONE, | |
28da1f8f | 227 | true, |
cc34bc8c BP |
228 | 0, NULL, |
229 | 0, NULL, | |
230 | }, { | |
231 | MFF_VLAN_VID, "vlan_vid", NULL, | |
232 | sizeof(ovs_be16), 12, | |
0bdc4bec | 233 | MFM_FULLY, |
cc34bc8c BP |
234 | MFS_DECIMAL, |
235 | MFP_NONE, | |
236 | true, | |
b5e5143b | 237 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
36f3999b | 238 | OXM_OF_VLAN_VID, "OXM_OF_VLAN_VID", |
6a885fd0 | 239 | }, { |
441c57a9 | 240 | MFF_DL_VLAN_PCP, "dl_vlan_pcp", NULL, |
6a885fd0 | 241 | 1, 3, |
0bdc4bec | 242 | MFM_NONE, |
6a885fd0 BP |
243 | MFS_DECIMAL, |
244 | MFP_NONE, | |
28da1f8f | 245 | true, |
cc34bc8c BP |
246 | 0, NULL, |
247 | 0, NULL, | |
248 | }, { | |
249 | MFF_VLAN_PCP, "vlan_pcp", NULL, | |
250 | 1, 3, | |
0bdc4bec | 251 | MFM_NONE, |
cc34bc8c | 252 | MFS_DECIMAL, |
8069b0da | 253 | MFP_VLAN_VID, |
cc34bc8c | 254 | true, |
b5e5143b | 255 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
36f3999b | 256 | OXM_OF_VLAN_PCP, "OXM_OF_VLAN_PCP", |
6a885fd0 BP |
257 | }, |
258 | ||
259 | /* ## -- ## */ | |
260 | /* ## L3 ## */ | |
261 | /* ## -- ## */ | |
262 | ||
263 | { | |
264 | MFF_IPV4_SRC, "ip_src", "nw_src", | |
265 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 266 | MFM_FULLY, |
6a885fd0 BP |
267 | MFS_IPV4, |
268 | MFP_IPV4, | |
28da1f8f BP |
269 | true, |
270 | NXM_OF_IP_SRC, "NXM_OF_IP_SRC", | |
36f3999b | 271 | OXM_OF_IPV4_SRC, "OXM_OF_IPV4_SRC", |
6a885fd0 BP |
272 | }, { |
273 | MFF_IPV4_DST, "ip_dst", "nw_dst", | |
274 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 275 | MFM_FULLY, |
6a885fd0 BP |
276 | MFS_IPV4, |
277 | MFP_IPV4, | |
28da1f8f BP |
278 | true, |
279 | NXM_OF_IP_DST, "NXM_OF_IP_DST", | |
36f3999b | 280 | OXM_OF_IPV4_DST, "OXM_OF_IPV4_DST", |
6a885fd0 BP |
281 | }, |
282 | ||
283 | { | |
284 | MFF_IPV6_SRC, "ipv6_src", NULL, | |
285 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 286 | MFM_FULLY, |
6a885fd0 BP |
287 | MFS_IPV6, |
288 | MFP_IPV6, | |
28da1f8f BP |
289 | true, |
290 | NXM_NX_IPV6_SRC, "NXM_NX_IPV6_SRC", | |
36f3999b | 291 | OXM_OF_IPV6_SRC, "OXM_OF_IPV6_SRC", |
6a885fd0 BP |
292 | }, { |
293 | MFF_IPV6_DST, "ipv6_dst", NULL, | |
294 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 295 | MFM_FULLY, |
6a885fd0 BP |
296 | MFS_IPV6, |
297 | MFP_IPV6, | |
28da1f8f BP |
298 | true, |
299 | NXM_NX_IPV6_DST, "NXM_NX_IPV6_DST", | |
36f3999b | 300 | OXM_OF_IPV6_DST, "OXM_OF_IPV6_DST", |
6a885fd0 | 301 | }, |
fa8223b7 JP |
302 | { |
303 | MFF_IPV6_LABEL, "ipv6_label", NULL, | |
304 | 4, 20, | |
0bdc4bec | 305 | MFM_FULLY, |
fa8223b7 JP |
306 | MFS_HEXADECIMAL, |
307 | MFP_IPV6, | |
28da1f8f BP |
308 | false, |
309 | NXM_NX_IPV6_LABEL, "NXM_NX_IPV6_LABEL", | |
36f3999b | 310 | OXM_OF_IPV6_FLABEL, "OXM_OF_IPV6_FLABEL", |
fa8223b7 | 311 | }, |
6a885fd0 BP |
312 | |
313 | { | |
314 | MFF_IP_PROTO, "nw_proto", NULL, | |
315 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 316 | MFM_NONE, |
6a885fd0 BP |
317 | MFS_DECIMAL, |
318 | MFP_IP_ANY, | |
28da1f8f BP |
319 | false, |
320 | NXM_OF_IP_PROTO, "NXM_OF_IP_PROTO", | |
36f3999b | 321 | OXM_OF_IP_PROTO, "OXM_OF_IP_PROTO", |
6a885fd0 | 322 | }, { |
530180fd | 323 | MFF_IP_DSCP, "nw_tos", NULL, |
6a885fd0 | 324 | MF_FIELD_SIZES(u8), |
0bdc4bec | 325 | MFM_NONE, |
6a885fd0 BP |
326 | MFS_DECIMAL, |
327 | MFP_IP_ANY, | |
28da1f8f | 328 | true, |
36f3999b SH |
329 | NXM_OF_IP_TOS, "NXM_OF_IP_TOS", |
330 | OXM_OF_IP_DSCP, "OXM_OF_IP_DSCP", | |
530180fd JP |
331 | }, { |
332 | MFF_IP_ECN, "nw_ecn", NULL, | |
333 | 1, 2, | |
0bdc4bec | 334 | MFM_NONE, |
530180fd JP |
335 | MFS_DECIMAL, |
336 | MFP_IP_ANY, | |
28da1f8f BP |
337 | true, |
338 | NXM_NX_IP_ECN, "NXM_NX_IP_ECN", | |
36f3999b | 339 | OXM_OF_IP_ECN, "OXM_OF_IP_ECN", |
a61680c6 JP |
340 | }, { |
341 | MFF_IP_TTL, "nw_ttl", NULL, | |
342 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 343 | MFM_NONE, |
a61680c6 JP |
344 | MFS_DECIMAL, |
345 | MFP_IP_ANY, | |
28da1f8f | 346 | true, |
36f3999b | 347 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
b5e5143b | 348 | NXM_NX_IP_TTL, "NXM_NX_IP_TTL", |
7257b535 BP |
349 | }, { |
350 | MFF_IP_FRAG, "ip_frag", NULL, | |
351 | 1, 2, | |
0bdc4bec | 352 | MFM_FULLY, |
7257b535 BP |
353 | MFS_FRAG, |
354 | MFP_IP_ANY, | |
28da1f8f | 355 | false, |
36f3999b | 356 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
b5e5143b | 357 | NXM_NX_IP_FRAG, "NXM_NX_IP_FRAG", |
6a885fd0 BP |
358 | }, |
359 | ||
360 | { | |
361 | MFF_ARP_OP, "arp_op", NULL, | |
362 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 363 | MFM_NONE, |
6a885fd0 BP |
364 | MFS_DECIMAL, |
365 | MFP_ARP, | |
28da1f8f BP |
366 | false, |
367 | NXM_OF_ARP_OP, "NXM_OF_ARP_OP", | |
36f3999b | 368 | OXM_OF_ARP_OP, "OXM_OF_ARP_OP", |
6a885fd0 BP |
369 | }, { |
370 | MFF_ARP_SPA, "arp_spa", NULL, | |
371 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 372 | MFM_FULLY, |
6a885fd0 BP |
373 | MFS_IPV4, |
374 | MFP_ARP, | |
28da1f8f BP |
375 | false, |
376 | NXM_OF_ARP_SPA, "NXM_OF_ARP_SPA", | |
36f3999b | 377 | OXM_OF_ARP_SPA, "OXM_OF_ARP_SPA", |
6a885fd0 BP |
378 | }, { |
379 | MFF_ARP_TPA, "arp_tpa", NULL, | |
380 | MF_FIELD_SIZES(be32), | |
0bdc4bec | 381 | MFM_FULLY, |
6a885fd0 BP |
382 | MFS_IPV4, |
383 | MFP_ARP, | |
28da1f8f BP |
384 | false, |
385 | NXM_OF_ARP_TPA, "NXM_OF_ARP_TPA", | |
36f3999b | 386 | OXM_OF_ARP_TPA, "OXM_OF_ARP_TPA", |
6a885fd0 BP |
387 | }, { |
388 | MFF_ARP_SHA, "arp_sha", NULL, | |
389 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 390 | MFM_FULLY, |
6a885fd0 BP |
391 | MFS_ETHERNET, |
392 | MFP_ARP, | |
28da1f8f BP |
393 | false, |
394 | NXM_NX_ARP_SHA, "NXM_NX_ARP_SHA", | |
36f3999b | 395 | OXM_OF_ARP_SHA, "OXM_OF_ARP_SHA", |
6a885fd0 BP |
396 | }, { |
397 | MFF_ARP_THA, "arp_tha", NULL, | |
398 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 399 | MFM_FULLY, |
6a885fd0 BP |
400 | MFS_ETHERNET, |
401 | MFP_ARP, | |
28da1f8f BP |
402 | false, |
403 | NXM_NX_ARP_THA, "NXM_NX_ARP_THA", | |
36f3999b | 404 | OXM_OF_ARP_THA, "OXM_OF_ARP_THA", |
6a885fd0 BP |
405 | }, |
406 | ||
407 | /* ## -- ## */ | |
408 | /* ## L4 ## */ | |
409 | /* ## -- ## */ | |
410 | ||
411 | { | |
412 | MFF_TCP_SRC, "tcp_src", "tp_src", | |
413 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 414 | MFM_FULLY, |
6a885fd0 BP |
415 | MFS_DECIMAL, |
416 | MFP_TCP, | |
28da1f8f BP |
417 | true, |
418 | NXM_OF_TCP_SRC, "NXM_OF_TCP_SRC", | |
36f3999b | 419 | OXM_OF_TCP_SRC, "OXM_OF_TCP_SRC", |
6a885fd0 BP |
420 | }, { |
421 | MFF_TCP_DST, "tcp_dst", "tp_dst", | |
422 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 423 | MFM_FULLY, |
6a885fd0 BP |
424 | MFS_DECIMAL, |
425 | MFP_TCP, | |
28da1f8f BP |
426 | true, |
427 | NXM_OF_TCP_DST, "NXM_OF_TCP_DST", | |
36f3999b | 428 | OXM_OF_TCP_DST, "OXM_OF_TCP_DST", |
6a885fd0 BP |
429 | }, |
430 | ||
431 | { | |
432 | MFF_UDP_SRC, "udp_src", NULL, | |
433 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 434 | MFM_FULLY, |
6a885fd0 BP |
435 | MFS_DECIMAL, |
436 | MFP_UDP, | |
28da1f8f BP |
437 | true, |
438 | NXM_OF_UDP_SRC, "NXM_OF_UDP_SRC", | |
36f3999b | 439 | OXM_OF_UDP_SRC, "OXM_OF_UDP_SRC", |
6a885fd0 BP |
440 | }, { |
441 | MFF_UDP_DST, "udp_dst", NULL, | |
442 | MF_FIELD_SIZES(be16), | |
0bdc4bec | 443 | MFM_FULLY, |
6a885fd0 BP |
444 | MFS_DECIMAL, |
445 | MFP_UDP, | |
28da1f8f BP |
446 | true, |
447 | NXM_OF_UDP_DST, "NXM_OF_UDP_DST", | |
36f3999b | 448 | OXM_OF_UDP_DST, "OXM_OF_UDP_DST", |
6a885fd0 BP |
449 | }, |
450 | ||
451 | { | |
268a95e0 | 452 | MFF_ICMPV4_TYPE, "icmp_type", NULL, |
6a885fd0 | 453 | MF_FIELD_SIZES(u8), |
0bdc4bec | 454 | MFM_NONE, |
6a885fd0 | 455 | MFS_DECIMAL, |
268a95e0 | 456 | MFP_ICMPV4, |
28da1f8f BP |
457 | false, |
458 | NXM_OF_ICMP_TYPE, "NXM_OF_ICMP_TYPE", | |
36f3999b | 459 | OXM_OF_ICMPV4_TYPE, "OXM_OF_ICMPV4_TYPE", |
6a885fd0 | 460 | }, { |
268a95e0 | 461 | MFF_ICMPV4_CODE, "icmp_code", NULL, |
6a885fd0 | 462 | MF_FIELD_SIZES(u8), |
0bdc4bec | 463 | MFM_NONE, |
6a885fd0 | 464 | MFS_DECIMAL, |
268a95e0 | 465 | MFP_ICMPV4, |
28da1f8f BP |
466 | false, |
467 | NXM_OF_ICMP_CODE, "NXM_OF_ICMP_CODE", | |
36f3999b | 468 | OXM_OF_ICMPV4_CODE, "OXM_OF_ICMPV4_CODE", |
28da1f8f BP |
469 | }, |
470 | ||
471 | { | |
268a95e0 BP |
472 | MFF_ICMPV6_TYPE, "icmpv6_type", NULL, |
473 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 474 | MFM_NONE, |
268a95e0 BP |
475 | MFS_DECIMAL, |
476 | MFP_ICMPV6, | |
28da1f8f BP |
477 | false, |
478 | NXM_NX_ICMPV6_TYPE, "NXM_NX_ICMPV6_TYPE", | |
36f3999b | 479 | OXM_OF_ICMPV6_TYPE, "OXM_OF_ICMPV6_TYPE", |
268a95e0 BP |
480 | }, { |
481 | MFF_ICMPV6_CODE, "icmpv6_code", NULL, | |
482 | MF_FIELD_SIZES(u8), | |
0bdc4bec | 483 | MFM_NONE, |
268a95e0 BP |
484 | MFS_DECIMAL, |
485 | MFP_ICMPV6, | |
28da1f8f BP |
486 | false, |
487 | NXM_NX_ICMPV6_CODE, "NXM_NX_ICMPV6_CODE", | |
36f3999b | 488 | OXM_OF_ICMPV6_CODE, "OXM_OF_ICMPV6_CODE", |
6a885fd0 BP |
489 | }, |
490 | ||
491 | /* ## ---- ## */ | |
492 | /* ## L"5" ## */ | |
493 | /* ## ---- ## */ | |
494 | ||
495 | { | |
496 | MFF_ND_TARGET, "nd_target", NULL, | |
497 | MF_FIELD_SIZES(ipv6), | |
0bdc4bec | 498 | MFM_FULLY, |
6a885fd0 BP |
499 | MFS_IPV6, |
500 | MFP_ND, | |
28da1f8f BP |
501 | false, |
502 | NXM_NX_ND_TARGET, "NXM_NX_ND_TARGET", | |
36f3999b | 503 | OXM_OF_IPV6_ND_TARGET, "OXM_OF_IPV6_ND_TARGET", |
6a885fd0 BP |
504 | }, { |
505 | MFF_ND_SLL, "nd_sll", NULL, | |
506 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 507 | MFM_FULLY, |
6a885fd0 BP |
508 | MFS_ETHERNET, |
509 | MFP_ND_SOLICIT, | |
28da1f8f BP |
510 | false, |
511 | NXM_NX_ND_SLL, "NXM_NX_ND_SLL", | |
36f3999b | 512 | OXM_OF_IPV6_ND_SLL, "OXM_OF_IPV6_ND_SLL", |
6a885fd0 BP |
513 | }, { |
514 | MFF_ND_TLL, "nd_tll", NULL, | |
515 | MF_FIELD_SIZES(mac), | |
0bdc4bec | 516 | MFM_FULLY, |
6a885fd0 BP |
517 | MFS_ETHERNET, |
518 | MFP_ND_ADVERT, | |
28da1f8f BP |
519 | false, |
520 | NXM_NX_ND_TLL, "NXM_NX_ND_TLL", | |
36f3999b | 521 | OXM_OF_IPV6_ND_TLL, "OXM_OF_IPV6_ND_TLL", |
6a885fd0 BP |
522 | } |
523 | }; | |
524 | ||
b5e5143b | 525 | /* Maps an NXM or OXM header value to an mf_field. */ |
28da1f8f | 526 | struct nxm_field { |
b5e5143b BP |
527 | struct hmap_node hmap_node; /* In 'all_fields' hmap. */ |
528 | uint32_t header; /* NXM or OXM header value. */ | |
28da1f8f BP |
529 | const struct mf_field *mf; |
530 | }; | |
531 | ||
b5e5143b BP |
532 | /* Contains 'struct nxm_field's. */ |
533 | static struct hmap all_fields = HMAP_INITIALIZER(&all_fields); | |
28da1f8f | 534 | |
816fd533 BP |
535 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
536 | * controller and so there's not much point in showing a lot of them. */ | |
537 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
538 | ||
b5e5143b BP |
539 | const struct mf_field *mf_from_nxm_header__(uint32_t header); |
540 | ||
6a885fd0 BP |
541 | /* Returns the field with the given 'id'. */ |
542 | const struct mf_field * | |
543 | mf_from_id(enum mf_field_id id) | |
544 | { | |
cb22974d | 545 | ovs_assert((unsigned int) id < MFF_N_IDS); |
6a885fd0 BP |
546 | return &mf_fields[id]; |
547 | } | |
548 | ||
549 | /* Returns the field with the given 'name', or a null pointer if no field has | |
550 | * that name. */ | |
551 | const struct mf_field * | |
552 | mf_from_name(const char *name) | |
553 | { | |
554 | static struct shash mf_by_name = SHASH_INITIALIZER(&mf_by_name); | |
555 | ||
556 | if (shash_is_empty(&mf_by_name)) { | |
557 | const struct mf_field *mf; | |
558 | ||
559 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { | |
560 | shash_add_once(&mf_by_name, mf->name, mf); | |
561 | if (mf->extra_name) { | |
562 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
563 | } | |
564 | } | |
565 | } | |
566 | ||
567 | return shash_find_data(&mf_by_name, name); | |
568 | } | |
569 | ||
28da1f8f | 570 | static void |
b5e5143b | 571 | add_nxm_field(uint32_t header, const struct mf_field *mf) |
28da1f8f BP |
572 | { |
573 | struct nxm_field *f; | |
574 | ||
575 | f = xmalloc(sizeof *f); | |
b5e5143b BP |
576 | hmap_insert(&all_fields, &f->hmap_node, hash_int(header, 0)); |
577 | f->header = header; | |
28da1f8f BP |
578 | f->mf = mf; |
579 | } | |
580 | ||
b5ae8913 SH |
581 | static void |
582 | nxm_init_add_field(const struct mf_field *mf, uint32_t header) | |
583 | { | |
b5e5143b | 584 | if (header) { |
cb22974d | 585 | ovs_assert(!mf_from_nxm_header__(header)); |
b5e5143b BP |
586 | add_nxm_field(header, mf); |
587 | if (mf->maskable != MFM_NONE) { | |
588 | add_nxm_field(NXM_MAKE_WILD_HEADER(header), mf); | |
589 | } | |
b5ae8913 | 590 | } |
b5ae8913 | 591 | } |
b5ae8913 | 592 | |
28da1f8f BP |
593 | static void |
594 | nxm_init(void) | |
595 | { | |
596 | const struct mf_field *mf; | |
597 | ||
598 | for (mf = mf_fields; mf < &mf_fields[MFF_N_IDS]; mf++) { | |
b5ae8913 | 599 | nxm_init_add_field(mf, mf->nxm_header); |
b5e5143b BP |
600 | if (mf->oxm_header != mf->nxm_header) { |
601 | nxm_init_add_field(mf, mf->oxm_header); | |
602 | } | |
28da1f8f | 603 | } |
28da1f8f BP |
604 | } |
605 | ||
606 | const struct mf_field * | |
607 | mf_from_nxm_header(uint32_t header) | |
608 | { | |
b5e5143b | 609 | if (hmap_is_empty(&all_fields)) { |
28da1f8f BP |
610 | nxm_init(); |
611 | } | |
b5e5143b BP |
612 | return mf_from_nxm_header__(header); |
613 | } | |
28da1f8f | 614 | |
b5e5143b BP |
615 | const struct mf_field * |
616 | mf_from_nxm_header__(uint32_t header) | |
617 | { | |
618 | const struct nxm_field *f; | |
619 | ||
620 | HMAP_FOR_EACH_IN_BUCKET (f, hmap_node, hash_int(header, 0), &all_fields) { | |
621 | if (f->header == header) { | |
28da1f8f BP |
622 | return f->mf; |
623 | } | |
624 | } | |
625 | ||
626 | return NULL; | |
627 | } | |
628 | ||
6a885fd0 BP |
629 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
630 | * specifies at least one bit in the field. | |
631 | * | |
632 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
633 | * meets 'mf''s prerequisites. */ | |
634 | bool | |
635 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
636 | { | |
637 | switch (mf->id) { | |
6a885fd0 | 638 | case MFF_TUN_ID: |
4fe3445a PS |
639 | case MFF_TUN_SRC: |
640 | case MFF_TUN_DST: | |
641 | case MFF_TUN_TOS: | |
642 | case MFF_TUN_TTL: | |
643 | case MFF_TUN_FLAGS: | |
296e07ac | 644 | return !wc->masks.tunnel.tun_id; |
969fc56c | 645 | case MFF_METADATA: |
26720e24 | 646 | return !wc->masks.metadata; |
0bdc4bec | 647 | case MFF_IN_PORT: |
26720e24 | 648 | return !wc->masks.in_port; |
1b567fb9 AA |
649 | case MFF_SKB_PRIORITY: |
650 | return !wc->masks.skb_priority; | |
651 | case MFF_SKB_MARK: | |
652 | return !wc->masks.skb_mark; | |
0d7e2fe4 | 653 | CASE_MFF_REGS: |
26720e24 | 654 | return !wc->masks.regs[mf->id - MFF_REG0]; |
6a885fd0 | 655 | |
73c0ce34 | 656 | case MFF_ETH_SRC: |
26720e24 | 657 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 658 | case MFF_ETH_DST: |
26720e24 | 659 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 660 | case MFF_ETH_TYPE: |
26720e24 | 661 | return !wc->masks.dl_type; |
6a885fd0 | 662 | |
e878338b SH |
663 | case MFF_ARP_SHA: |
664 | case MFF_ND_SLL: | |
26720e24 | 665 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
666 | |
667 | case MFF_ARP_THA: | |
668 | case MFF_ND_TLL: | |
26720e24 | 669 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 670 | |
6a885fd0 | 671 | case MFF_VLAN_TCI: |
26720e24 | 672 | return !wc->masks.vlan_tci; |
441c57a9 | 673 | case MFF_DL_VLAN: |
26720e24 | 674 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 675 | case MFF_VLAN_VID: |
26720e24 | 676 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 677 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 678 | case MFF_VLAN_PCP: |
26720e24 | 679 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 BP |
680 | |
681 | case MFF_IPV4_SRC: | |
26720e24 | 682 | return !wc->masks.nw_src; |
6a885fd0 | 683 | case MFF_IPV4_DST: |
26720e24 | 684 | return !wc->masks.nw_dst; |
6a885fd0 BP |
685 | |
686 | case MFF_IPV6_SRC: | |
26720e24 | 687 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 688 | case MFF_IPV6_DST: |
26720e24 | 689 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 690 | |
32455024 | 691 | case MFF_IPV6_LABEL: |
26720e24 | 692 | return !wc->masks.ipv6_label; |
32455024 | 693 | |
851d3105 | 694 | case MFF_IP_PROTO: |
26720e24 | 695 | return !wc->masks.nw_proto; |
5d9499c4 | 696 | case MFF_IP_DSCP: |
26720e24 | 697 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 698 | case MFF_IP_ECN: |
26720e24 | 699 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 700 | case MFF_IP_TTL: |
26720e24 | 701 | return !wc->masks.nw_ttl; |
5d9499c4 | 702 | |
47284b1f | 703 | case MFF_ND_TARGET: |
26720e24 | 704 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 705 | |
7257b535 | 706 | case MFF_IP_FRAG: |
26720e24 | 707 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 708 | |
851d3105 | 709 | case MFF_ARP_OP: |
26720e24 | 710 | return !wc->masks.nw_proto; |
6a885fd0 | 711 | case MFF_ARP_SPA: |
26720e24 | 712 | return !wc->masks.nw_src; |
6a885fd0 | 713 | case MFF_ARP_TPA: |
26720e24 | 714 | return !wc->masks.nw_dst; |
6a885fd0 | 715 | |
73f33563 BP |
716 | case MFF_TCP_SRC: |
717 | case MFF_UDP_SRC: | |
718 | case MFF_ICMPV4_TYPE: | |
719 | case MFF_ICMPV6_TYPE: | |
26720e24 | 720 | return !wc->masks.tp_src; |
73f33563 BP |
721 | case MFF_TCP_DST: |
722 | case MFF_UDP_DST: | |
723 | case MFF_ICMPV4_CODE: | |
724 | case MFF_ICMPV6_CODE: | |
26720e24 | 725 | return !wc->masks.tp_dst; |
73f33563 | 726 | |
6a885fd0 BP |
727 | case MFF_N_IDS: |
728 | default: | |
729 | NOT_REACHED(); | |
730 | } | |
731 | } | |
732 | ||
733 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
734 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
735 | * purposes, or to 0 if it is wildcarded. | |
736 | * | |
737 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
738 | * meets 'mf''s prerequisites. */ | |
739 | void | |
740 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
741 | union mf_value *mask) | |
742 | { | |
fb15feb0 | 743 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
744 | } |
745 | ||
746 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
747 | * if the mask is valid, false otherwise. */ | |
748 | bool | |
749 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
750 | { | |
751 | switch (mf->maskable) { | |
752 | case MFM_NONE: | |
753 | return (is_all_zeros((const uint8_t *) mask, mf->n_bytes) || | |
754 | is_all_ones((const uint8_t *) mask, mf->n_bytes)); | |
755 | ||
756 | case MFM_FULLY: | |
757 | return true; | |
6a885fd0 BP |
758 | } |
759 | ||
760 | NOT_REACHED(); | |
761 | } | |
762 | ||
6a885fd0 BP |
763 | static bool |
764 | is_icmpv4(const struct flow *flow) | |
765 | { | |
766 | return (flow->dl_type == htons(ETH_TYPE_IP) | |
767 | && flow->nw_proto == IPPROTO_ICMP); | |
768 | } | |
769 | ||
770 | static bool | |
771 | is_icmpv6(const struct flow *flow) | |
772 | { | |
773 | return (flow->dl_type == htons(ETH_TYPE_IPV6) | |
774 | && flow->nw_proto == IPPROTO_ICMPV6); | |
775 | } | |
776 | ||
777 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ | |
778 | bool | |
779 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
780 | { | |
781 | switch (mf->prereqs) { | |
782 | case MFP_NONE: | |
783 | return true; | |
784 | ||
785 | case MFP_ARP: | |
8087f5ff MM |
786 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
787 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
788 | case MFP_IPV4: |
789 | return flow->dl_type == htons(ETH_TYPE_IP); | |
790 | case MFP_IPV6: | |
791 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 792 | case MFP_VLAN_VID: |
5921e99a | 793 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
6a885fd0 BP |
794 | case MFP_IP_ANY: |
795 | return is_ip_any(flow); | |
796 | ||
797 | case MFP_TCP: | |
798 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP; | |
799 | case MFP_UDP: | |
800 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP; | |
268a95e0 BP |
801 | case MFP_ICMPV4: |
802 | return is_icmpv4(flow); | |
6a885fd0 BP |
803 | case MFP_ICMPV6: |
804 | return is_icmpv6(flow); | |
6a885fd0 BP |
805 | |
806 | case MFP_ND: | |
807 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
808 | && flow->tp_dst == htons(0) |
809 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
810 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
811 | case MFP_ND_SOLICIT: |
812 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
813 | && flow->tp_dst == htons(0) |
814 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
815 | case MFP_ND_ADVERT: |
816 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
817 | && flow->tp_dst == htons(0) |
818 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
819 | } |
820 | ||
821 | NOT_REACHED(); | |
822 | } | |
823 | ||
824 | /* Returns true if 'value' may be a valid value *as part of a masked match*, | |
825 | * false otherwise. | |
826 | * | |
827 | * A value is not rejected just because it is not valid for the field in | |
828 | * question, but only if it doesn't make sense to test the bits in question at | |
829 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
830 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
831 | * it is still legitimate to test just for those bits (see the documentation | |
832 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 833 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
834 | bool |
835 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
836 | { | |
837 | switch (mf->id) { | |
838 | case MFF_TUN_ID: | |
4fe3445a PS |
839 | case MFF_TUN_SRC: |
840 | case MFF_TUN_DST: | |
841 | case MFF_TUN_TOS: | |
842 | case MFF_TUN_TTL: | |
843 | case MFF_TUN_FLAGS: | |
969fc56c | 844 | case MFF_METADATA: |
6a885fd0 | 845 | case MFF_IN_PORT: |
1b567fb9 AA |
846 | case MFF_SKB_PRIORITY: |
847 | case MFF_SKB_MARK: | |
0d7e2fe4 | 848 | CASE_MFF_REGS: |
6a885fd0 BP |
849 | case MFF_ETH_SRC: |
850 | case MFF_ETH_DST: | |
851 | case MFF_ETH_TYPE: | |
852 | case MFF_VLAN_TCI: | |
853 | case MFF_IPV4_SRC: | |
854 | case MFF_IPV4_DST: | |
855 | case MFF_IPV6_SRC: | |
856 | case MFF_IPV6_DST: | |
857 | case MFF_IP_PROTO: | |
a61680c6 | 858 | case MFF_IP_TTL: |
6a885fd0 BP |
859 | case MFF_ARP_SPA: |
860 | case MFF_ARP_TPA: | |
861 | case MFF_ARP_SHA: | |
862 | case MFF_ARP_THA: | |
863 | case MFF_TCP_SRC: | |
864 | case MFF_TCP_DST: | |
865 | case MFF_UDP_SRC: | |
866 | case MFF_UDP_DST: | |
268a95e0 BP |
867 | case MFF_ICMPV4_TYPE: |
868 | case MFF_ICMPV4_CODE: | |
869 | case MFF_ICMPV6_TYPE: | |
870 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
871 | case MFF_ND_TARGET: |
872 | case MFF_ND_SLL: | |
873 | case MFF_ND_TLL: | |
874 | return true; | |
875 | ||
530180fd | 876 | case MFF_IP_DSCP: |
7257b535 | 877 | return !(value->u8 & ~IP_DSCP_MASK); |
530180fd JP |
878 | case MFF_IP_ECN: |
879 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 880 | case MFF_IP_FRAG: |
eadef313 | 881 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
6a885fd0 BP |
882 | |
883 | case MFF_ARP_OP: | |
884 | return !(value->be16 & htons(0xff00)); | |
885 | ||
441c57a9 | 886 | case MFF_DL_VLAN: |
6a885fd0 | 887 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
888 | case MFF_VLAN_VID: |
889 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 890 | |
441c57a9 | 891 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 892 | case MFF_VLAN_PCP: |
24016f5a | 893 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 894 | |
fa8223b7 JP |
895 | case MFF_IPV6_LABEL: |
896 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
897 | ||
6a885fd0 BP |
898 | case MFF_N_IDS: |
899 | default: | |
900 | NOT_REACHED(); | |
901 | } | |
902 | } | |
903 | ||
904 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
905 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
906 | void | |
907 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
908 | union mf_value *value) | |
909 | { | |
910 | switch (mf->id) { | |
911 | case MFF_TUN_ID: | |
296e07ac | 912 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 913 | break; |
4fe3445a PS |
914 | case MFF_TUN_SRC: |
915 | value->be32 = flow->tunnel.ip_src; | |
916 | break; | |
917 | case MFF_TUN_DST: | |
918 | value->be32 = flow->tunnel.ip_dst; | |
919 | break; | |
920 | case MFF_TUN_FLAGS: | |
921 | value->be16 = htons(flow->tunnel.flags); | |
922 | break; | |
923 | case MFF_TUN_TTL: | |
924 | value->u8 = flow->tunnel.ip_ttl; | |
925 | break; | |
926 | case MFF_TUN_TOS: | |
927 | value->u8 = flow->tunnel.ip_tos; | |
928 | break; | |
929 | ||
969fc56c JS |
930 | case MFF_METADATA: |
931 | value->be64 = flow->metadata; | |
932 | break; | |
6a885fd0 BP |
933 | |
934 | case MFF_IN_PORT: | |
935 | value->be16 = htons(flow->in_port); | |
936 | break; | |
937 | ||
1b567fb9 | 938 | case MFF_SKB_PRIORITY: |
a81f0a44 | 939 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
940 | break; |
941 | ||
942 | case MFF_SKB_MARK: | |
a81f0a44 | 943 | value->be32 = htonl(flow->skb_mark); |
1b567fb9 AA |
944 | break; |
945 | ||
0d7e2fe4 | 946 | CASE_MFF_REGS: |
2f98b0b7 | 947 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
948 | break; |
949 | ||
950 | case MFF_ETH_SRC: | |
951 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
952 | break; | |
953 | ||
954 | case MFF_ETH_DST: | |
955 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
956 | break; | |
957 | ||
958 | case MFF_ETH_TYPE: | |
959 | value->be16 = flow->dl_type; | |
960 | break; | |
961 | ||
962 | case MFF_VLAN_TCI: | |
963 | value->be16 = flow->vlan_tci; | |
964 | break; | |
965 | ||
441c57a9 | 966 | case MFF_DL_VLAN: |
6a885fd0 BP |
967 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
968 | break; | |
cc34bc8c BP |
969 | case MFF_VLAN_VID: |
970 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
971 | break; | |
6a885fd0 | 972 | |
441c57a9 | 973 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 974 | case MFF_VLAN_PCP: |
6a885fd0 BP |
975 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
976 | break; | |
977 | ||
978 | case MFF_IPV4_SRC: | |
979 | value->be32 = flow->nw_src; | |
980 | break; | |
981 | ||
982 | case MFF_IPV4_DST: | |
983 | value->be32 = flow->nw_dst; | |
984 | break; | |
985 | ||
986 | case MFF_IPV6_SRC: | |
987 | value->ipv6 = flow->ipv6_src; | |
988 | break; | |
989 | ||
990 | case MFF_IPV6_DST: | |
991 | value->ipv6 = flow->ipv6_dst; | |
992 | break; | |
993 | ||
fa8223b7 JP |
994 | case MFF_IPV6_LABEL: |
995 | value->be32 = flow->ipv6_label; | |
996 | break; | |
997 | ||
6a885fd0 BP |
998 | case MFF_IP_PROTO: |
999 | value->u8 = flow->nw_proto; | |
1000 | break; | |
1001 | ||
530180fd | 1002 | case MFF_IP_DSCP: |
eadef313 | 1003 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
1004 | break; |
1005 | ||
530180fd | 1006 | case MFF_IP_ECN: |
eadef313 | 1007 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
1008 | break; |
1009 | ||
a61680c6 JP |
1010 | case MFF_IP_TTL: |
1011 | value->u8 = flow->nw_ttl; | |
1012 | break; | |
1013 | ||
7257b535 | 1014 | case MFF_IP_FRAG: |
eadef313 | 1015 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
1016 | break; |
1017 | ||
1018 | case MFF_ARP_OP: | |
1019 | value->be16 = htons(flow->nw_proto); | |
1020 | break; | |
1021 | ||
1022 | case MFF_ARP_SPA: | |
1023 | value->be32 = flow->nw_src; | |
1024 | break; | |
1025 | ||
1026 | case MFF_ARP_TPA: | |
1027 | value->be32 = flow->nw_dst; | |
1028 | break; | |
1029 | ||
1030 | case MFF_ARP_SHA: | |
1031 | case MFF_ND_SLL: | |
1032 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
1033 | break; | |
1034 | ||
1035 | case MFF_ARP_THA: | |
1036 | case MFF_ND_TLL: | |
1037 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
1038 | break; | |
1039 | ||
1040 | case MFF_TCP_SRC: | |
6a885fd0 BP |
1041 | case MFF_UDP_SRC: |
1042 | value->be16 = flow->tp_src; | |
1043 | break; | |
1044 | ||
71baec06 | 1045 | case MFF_TCP_DST: |
6a885fd0 BP |
1046 | case MFF_UDP_DST: |
1047 | value->be16 = flow->tp_dst; | |
1048 | break; | |
1049 | ||
268a95e0 BP |
1050 | case MFF_ICMPV4_TYPE: |
1051 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
1052 | value->u8 = ntohs(flow->tp_src); |
1053 | break; | |
1054 | ||
268a95e0 BP |
1055 | case MFF_ICMPV4_CODE: |
1056 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1057 | value->u8 = ntohs(flow->tp_dst); |
1058 | break; | |
1059 | ||
1060 | case MFF_ND_TARGET: | |
1061 | value->ipv6 = flow->nd_target; | |
1062 | break; | |
1063 | ||
1064 | case MFF_N_IDS: | |
1065 | default: | |
1066 | NOT_REACHED(); | |
1067 | } | |
1068 | } | |
1069 | ||
81a76618 BP |
1070 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1071 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
1072 | * prerequisites. */ |
1073 | void | |
1074 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 1075 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
1076 | { |
1077 | switch (mf->id) { | |
1078 | case MFF_TUN_ID: | |
81a76618 | 1079 | match_set_tun_id(match, value->be64); |
6a885fd0 | 1080 | break; |
4fe3445a PS |
1081 | case MFF_TUN_SRC: |
1082 | match_set_tun_src(match, value->be32); | |
1083 | break; | |
1084 | case MFF_TUN_DST: | |
1085 | match_set_tun_dst(match, value->be32); | |
1086 | break; | |
1087 | case MFF_TUN_FLAGS: | |
1088 | match_set_tun_flags(match, ntohs(value->be16)); | |
1089 | break; | |
1090 | case MFF_TUN_TOS: | |
1091 | match_set_tun_tos(match, value->u8); | |
1092 | break; | |
1093 | case MFF_TUN_TTL: | |
1094 | match_set_tun_ttl(match, value->u8); | |
1095 | break; | |
1096 | ||
969fc56c | 1097 | case MFF_METADATA: |
81a76618 | 1098 | match_set_metadata(match, value->be64); |
969fc56c | 1099 | break; |
6a885fd0 BP |
1100 | |
1101 | case MFF_IN_PORT: | |
81a76618 | 1102 | match_set_in_port(match, ntohs(value->be16)); |
6a885fd0 BP |
1103 | break; |
1104 | ||
1b567fb9 AA |
1105 | case MFF_SKB_PRIORITY: |
1106 | match_set_skb_priority(match, ntohl(value->be32)); | |
1107 | break; | |
1108 | ||
1109 | case MFF_SKB_MARK: | |
1110 | match_set_skb_mark(match, ntohl(value->be32)); | |
1111 | break; | |
1112 | ||
0d7e2fe4 | 1113 | CASE_MFF_REGS: |
81a76618 | 1114 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 1115 | break; |
6a885fd0 BP |
1116 | |
1117 | case MFF_ETH_SRC: | |
81a76618 | 1118 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
1119 | break; |
1120 | ||
1121 | case MFF_ETH_DST: | |
81a76618 | 1122 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
1123 | break; |
1124 | ||
1125 | case MFF_ETH_TYPE: | |
81a76618 | 1126 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
1127 | break; |
1128 | ||
1129 | case MFF_VLAN_TCI: | |
81a76618 | 1130 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
1131 | break; |
1132 | ||
441c57a9 | 1133 | case MFF_DL_VLAN: |
81a76618 | 1134 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 1135 | break; |
cc34bc8c | 1136 | case MFF_VLAN_VID: |
81a76618 | 1137 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 1138 | break; |
6a885fd0 | 1139 | |
441c57a9 | 1140 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1141 | case MFF_VLAN_PCP: |
81a76618 | 1142 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
1143 | break; |
1144 | ||
1145 | case MFF_IPV4_SRC: | |
81a76618 | 1146 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1147 | break; |
1148 | ||
1149 | case MFF_IPV4_DST: | |
81a76618 | 1150 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1151 | break; |
1152 | ||
1153 | case MFF_IPV6_SRC: | |
81a76618 | 1154 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
1155 | break; |
1156 | ||
1157 | case MFF_IPV6_DST: | |
81a76618 | 1158 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
1159 | break; |
1160 | ||
fa8223b7 | 1161 | case MFF_IPV6_LABEL: |
81a76618 | 1162 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
1163 | break; |
1164 | ||
6a885fd0 | 1165 | case MFF_IP_PROTO: |
81a76618 | 1166 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
1167 | break; |
1168 | ||
530180fd | 1169 | case MFF_IP_DSCP: |
81a76618 | 1170 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
1171 | break; |
1172 | ||
1173 | case MFF_IP_ECN: | |
81a76618 | 1174 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
1175 | break; |
1176 | ||
a61680c6 | 1177 | case MFF_IP_TTL: |
81a76618 | 1178 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
1179 | break; |
1180 | ||
7257b535 | 1181 | case MFF_IP_FRAG: |
81a76618 | 1182 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
1183 | break; |
1184 | ||
6a885fd0 | 1185 | case MFF_ARP_OP: |
81a76618 | 1186 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
1187 | break; |
1188 | ||
1189 | case MFF_ARP_SPA: | |
81a76618 | 1190 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
1191 | break; |
1192 | ||
1193 | case MFF_ARP_TPA: | |
81a76618 | 1194 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
1195 | break; |
1196 | ||
1197 | case MFF_ARP_SHA: | |
1198 | case MFF_ND_SLL: | |
81a76618 | 1199 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
1200 | break; |
1201 | ||
1202 | case MFF_ARP_THA: | |
1203 | case MFF_ND_TLL: | |
81a76618 | 1204 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
1205 | break; |
1206 | ||
1207 | case MFF_TCP_SRC: | |
6a885fd0 | 1208 | case MFF_UDP_SRC: |
81a76618 | 1209 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
1210 | break; |
1211 | ||
71baec06 | 1212 | case MFF_TCP_DST: |
6a885fd0 | 1213 | case MFF_UDP_DST: |
81a76618 | 1214 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
1215 | break; |
1216 | ||
268a95e0 BP |
1217 | case MFF_ICMPV4_TYPE: |
1218 | case MFF_ICMPV6_TYPE: | |
81a76618 | 1219 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
1220 | break; |
1221 | ||
268a95e0 BP |
1222 | case MFF_ICMPV4_CODE: |
1223 | case MFF_ICMPV6_CODE: | |
81a76618 | 1224 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
1225 | break; |
1226 | ||
1227 | case MFF_ND_TARGET: | |
81a76618 | 1228 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
1229 | break; |
1230 | ||
1231 | case MFF_N_IDS: | |
1232 | default: | |
1233 | NOT_REACHED(); | |
1234 | } | |
1235 | } | |
1236 | ||
81a76618 BP |
1237 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
1238 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
28da1f8f BP |
1239 | * prerequisites. */ |
1240 | void | |
1241 | mf_set_flow_value(const struct mf_field *mf, | |
1242 | const union mf_value *value, struct flow *flow) | |
1243 | { | |
1244 | switch (mf->id) { | |
1245 | case MFF_TUN_ID: | |
296e07ac | 1246 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 1247 | break; |
4fe3445a PS |
1248 | case MFF_TUN_SRC: |
1249 | flow->tunnel.ip_src = value->be32; | |
1250 | break; | |
1251 | case MFF_TUN_DST: | |
1252 | flow->tunnel.ip_dst = value->be32; | |
1253 | break; | |
1254 | case MFF_TUN_FLAGS: | |
1255 | flow->tunnel.flags = ntohs(value->be16); | |
1256 | break; | |
1257 | case MFF_TUN_TOS: | |
1258 | flow->tunnel.ip_tos = value->u8; | |
1259 | break; | |
1260 | case MFF_TUN_TTL: | |
1261 | flow->tunnel.ip_ttl = value->u8; | |
1262 | break; | |
1263 | ||
969fc56c JS |
1264 | case MFF_METADATA: |
1265 | flow->metadata = value->be64; | |
1266 | break; | |
28da1f8f BP |
1267 | |
1268 | case MFF_IN_PORT: | |
1269 | flow->in_port = ntohs(value->be16); | |
1270 | break; | |
1271 | ||
1b567fb9 AA |
1272 | case MFF_SKB_PRIORITY: |
1273 | flow->skb_priority = ntohl(value->be32); | |
1274 | break; | |
1275 | ||
1276 | case MFF_SKB_MARK: | |
1277 | flow->skb_mark = ntohl(value->be32); | |
1278 | break; | |
1279 | ||
0d7e2fe4 | 1280 | CASE_MFF_REGS: |
28da1f8f BP |
1281 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
1282 | break; | |
28da1f8f BP |
1283 | |
1284 | case MFF_ETH_SRC: | |
1285 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
1286 | break; | |
1287 | ||
1288 | case MFF_ETH_DST: | |
b5a36e38 | 1289 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
1290 | break; |
1291 | ||
1292 | case MFF_ETH_TYPE: | |
1293 | flow->dl_type = value->be16; | |
1294 | break; | |
1295 | ||
1296 | case MFF_VLAN_TCI: | |
1297 | flow->vlan_tci = value->be16; | |
1298 | break; | |
1299 | ||
441c57a9 | 1300 | case MFF_DL_VLAN: |
fb0451d9 | 1301 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 1302 | break; |
cc34bc8c BP |
1303 | case MFF_VLAN_VID: |
1304 | flow_set_vlan_vid(flow, value->be16); | |
1305 | break; | |
28da1f8f | 1306 | |
441c57a9 | 1307 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1308 | case MFF_VLAN_PCP: |
28da1f8f BP |
1309 | flow_set_vlan_pcp(flow, value->u8); |
1310 | break; | |
1311 | ||
1312 | case MFF_IPV4_SRC: | |
1313 | flow->nw_src = value->be32; | |
1314 | break; | |
1315 | ||
1316 | case MFF_IPV4_DST: | |
1317 | flow->nw_dst = value->be32; | |
1318 | break; | |
1319 | ||
1320 | case MFF_IPV6_SRC: | |
1321 | flow->ipv6_src = value->ipv6; | |
1322 | break; | |
1323 | ||
1324 | case MFF_IPV6_DST: | |
1325 | flow->ipv6_dst = value->ipv6; | |
1326 | break; | |
1327 | ||
1328 | case MFF_IPV6_LABEL: | |
1329 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1330 | break; | |
1331 | ||
1332 | case MFF_IP_PROTO: | |
1333 | flow->nw_proto = value->u8; | |
1334 | break; | |
1335 | ||
1336 | case MFF_IP_DSCP: | |
1337 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1338 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1339 | break; | |
1340 | ||
1341 | case MFF_IP_ECN: | |
1342 | flow->nw_tos &= ~IP_ECN_MASK; | |
1343 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1344 | break; | |
1345 | ||
1346 | case MFF_IP_TTL: | |
1347 | flow->nw_ttl = value->u8; | |
1348 | break; | |
1349 | ||
1350 | case MFF_IP_FRAG: | |
1351 | flow->nw_frag &= value->u8; | |
1352 | break; | |
1353 | ||
1354 | case MFF_ARP_OP: | |
1355 | flow->nw_proto = ntohs(value->be16); | |
1356 | break; | |
1357 | ||
1358 | case MFF_ARP_SPA: | |
1359 | flow->nw_src = value->be32; | |
1360 | break; | |
1361 | ||
1362 | case MFF_ARP_TPA: | |
1363 | flow->nw_dst = value->be32; | |
1364 | break; | |
1365 | ||
1366 | case MFF_ARP_SHA: | |
1367 | case MFF_ND_SLL: | |
1368 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1369 | break; | |
1370 | ||
1371 | case MFF_ARP_THA: | |
1372 | case MFF_ND_TLL: | |
1373 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1374 | break; | |
1375 | ||
1376 | case MFF_TCP_SRC: | |
1377 | case MFF_UDP_SRC: | |
1378 | flow->tp_src = value->be16; | |
1379 | break; | |
1380 | ||
1381 | case MFF_TCP_DST: | |
1382 | case MFF_UDP_DST: | |
1383 | flow->tp_dst = value->be16; | |
1384 | break; | |
1385 | ||
1386 | case MFF_ICMPV4_TYPE: | |
1387 | case MFF_ICMPV6_TYPE: | |
1388 | flow->tp_src = htons(value->u8); | |
1389 | break; | |
1390 | ||
1391 | case MFF_ICMPV4_CODE: | |
1392 | case MFF_ICMPV6_CODE: | |
1393 | flow->tp_dst = htons(value->u8); | |
1394 | break; | |
1395 | ||
1396 | case MFF_ND_TARGET: | |
1397 | flow->nd_target = value->ipv6; | |
1398 | break; | |
1399 | ||
1400 | case MFF_N_IDS: | |
1401 | default: | |
1402 | NOT_REACHED(); | |
1403 | } | |
1404 | } | |
1405 | ||
ccbe50f8 BP |
1406 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1407 | * | |
1408 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1409 | * prerequisites. */ | |
1410 | bool | |
1411 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1412 | { | |
1413 | union mf_value value; | |
1414 | ||
1415 | mf_get_value(mf, flow, &value); | |
1416 | return is_all_zeros((const uint8_t *) &value, mf->n_bytes); | |
1417 | } | |
1418 | ||
81a76618 | 1419 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1420 | * |
81a76618 | 1421 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1422 | * prerequisites. */ |
1423 | void | |
81a76618 | 1424 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1425 | { |
1426 | switch (mf->id) { | |
1427 | case MFF_TUN_ID: | |
81a76618 | 1428 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1429 | break; |
4fe3445a PS |
1430 | case MFF_TUN_SRC: |
1431 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1432 | break; | |
1433 | case MFF_TUN_DST: | |
1434 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1435 | break; | |
1436 | case MFF_TUN_FLAGS: | |
1437 | match_set_tun_flags_masked(match, 0, 0); | |
1438 | break; | |
1439 | case MFF_TUN_TOS: | |
1440 | match_set_tun_tos_masked(match, 0, 0); | |
1441 | break; | |
1442 | case MFF_TUN_TTL: | |
1443 | match_set_tun_ttl_masked(match, 0, 0); | |
1444 | break; | |
1445 | ||
969fc56c | 1446 | case MFF_METADATA: |
81a76618 | 1447 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
6a885fd0 BP |
1448 | |
1449 | case MFF_IN_PORT: | |
81a76618 BP |
1450 | match->flow.in_port = 0; |
1451 | match->wc.masks.in_port = 0; | |
6a885fd0 BP |
1452 | break; |
1453 | ||
1b567fb9 AA |
1454 | case MFF_SKB_PRIORITY: |
1455 | match->flow.skb_priority = 0; | |
1456 | match->wc.masks.skb_priority = 0; | |
1457 | break; | |
1458 | ||
1459 | case MFF_SKB_MARK: | |
1460 | match->flow.skb_mark = 0; | |
1461 | match->wc.masks.skb_mark = 0; | |
1462 | break; | |
1463 | ||
0d7e2fe4 | 1464 | CASE_MFF_REGS: |
81a76618 | 1465 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1466 | break; |
6a885fd0 BP |
1467 | |
1468 | case MFF_ETH_SRC: | |
81a76618 BP |
1469 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1470 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1471 | break; |
1472 | ||
1473 | case MFF_ETH_DST: | |
81a76618 BP |
1474 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1475 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1476 | break; |
1477 | ||
1478 | case MFF_ETH_TYPE: | |
81a76618 BP |
1479 | match->flow.dl_type = htons(0); |
1480 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1481 | break; |
1482 | ||
1483 | case MFF_VLAN_TCI: | |
81a76618 | 1484 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1485 | break; |
1486 | ||
441c57a9 | 1487 | case MFF_DL_VLAN: |
cc34bc8c | 1488 | case MFF_VLAN_VID: |
81a76618 | 1489 | match_set_any_vid(match); |
6a885fd0 BP |
1490 | break; |
1491 | ||
441c57a9 | 1492 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1493 | case MFF_VLAN_PCP: |
81a76618 | 1494 | match_set_any_pcp(match); |
6a885fd0 BP |
1495 | break; |
1496 | ||
1497 | case MFF_IPV4_SRC: | |
1498 | case MFF_ARP_SPA: | |
81a76618 | 1499 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1500 | break; |
1501 | ||
1502 | case MFF_IPV4_DST: | |
1503 | case MFF_ARP_TPA: | |
81a76618 | 1504 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1505 | break; |
1506 | ||
1507 | case MFF_IPV6_SRC: | |
81a76618 BP |
1508 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1509 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1510 | break; |
1511 | ||
1512 | case MFF_IPV6_DST: | |
81a76618 BP |
1513 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1514 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1515 | break; |
1516 | ||
fa8223b7 | 1517 | case MFF_IPV6_LABEL: |
81a76618 BP |
1518 | match->wc.masks.ipv6_label = htonl(0); |
1519 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1520 | break; |
1521 | ||
6a885fd0 | 1522 | case MFF_IP_PROTO: |
81a76618 BP |
1523 | match->wc.masks.nw_proto = 0; |
1524 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1525 | break; |
1526 | ||
530180fd | 1527 | case MFF_IP_DSCP: |
81a76618 BP |
1528 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1529 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1530 | break; |
1531 | ||
530180fd | 1532 | case MFF_IP_ECN: |
81a76618 BP |
1533 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1534 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1535 | break; |
1536 | ||
a61680c6 | 1537 | case MFF_IP_TTL: |
81a76618 BP |
1538 | match->wc.masks.nw_ttl = 0; |
1539 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1540 | break; |
1541 | ||
7257b535 | 1542 | case MFF_IP_FRAG: |
81a76618 BP |
1543 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1544 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1545 | break; |
1546 | ||
1547 | case MFF_ARP_OP: | |
81a76618 BP |
1548 | match->wc.masks.nw_proto = 0; |
1549 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1550 | break; |
1551 | ||
1552 | case MFF_ARP_SHA: | |
1553 | case MFF_ND_SLL: | |
81a76618 BP |
1554 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1555 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1556 | break; |
1557 | ||
1558 | case MFF_ARP_THA: | |
1559 | case MFF_ND_TLL: | |
81a76618 BP |
1560 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1561 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1562 | break; |
1563 | ||
1564 | case MFF_TCP_SRC: | |
1565 | case MFF_UDP_SRC: | |
268a95e0 BP |
1566 | case MFF_ICMPV4_TYPE: |
1567 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1568 | match->wc.masks.tp_src = htons(0); |
1569 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1570 | break; |
1571 | ||
1572 | case MFF_TCP_DST: | |
1573 | case MFF_UDP_DST: | |
268a95e0 BP |
1574 | case MFF_ICMPV4_CODE: |
1575 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1576 | match->wc.masks.tp_dst = htons(0); |
1577 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1578 | break; |
1579 | ||
1580 | case MFF_ND_TARGET: | |
81a76618 BP |
1581 | memset(&match->wc.masks.nd_target, 0, |
1582 | sizeof match->wc.masks.nd_target); | |
1583 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1584 | break; |
1585 | ||
1586 | case MFF_N_IDS: | |
1587 | default: | |
1588 | NOT_REACHED(); | |
1589 | } | |
1590 | } | |
1591 | ||
81a76618 | 1592 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1593 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1594 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1595 | * 0-bit indicating a don't-care. | |
1596 | * | |
1597 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1598 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1599 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1600 | * |
1601 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1602 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
6a885fd0 BP |
1603 | void |
1604 | mf_set(const struct mf_field *mf, | |
1605 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1606 | struct match *match) |
6a885fd0 BP |
1607 | { |
1608 | if (!mask || is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1609 | mf_set_value(mf, value, match); |
6a885fd0 BP |
1610 | return; |
1611 | } else if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
81a76618 | 1612 | mf_set_wild(mf, match); |
6a885fd0 BP |
1613 | return; |
1614 | } | |
1615 | ||
1616 | switch (mf->id) { | |
1617 | case MFF_IN_PORT: | |
1b567fb9 AA |
1618 | case MFF_SKB_MARK: |
1619 | case MFF_SKB_PRIORITY: | |
6a885fd0 | 1620 | case MFF_ETH_TYPE: |
441c57a9 BP |
1621 | case MFF_DL_VLAN: |
1622 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1623 | case MFF_VLAN_PCP: |
6a885fd0 | 1624 | case MFF_IP_PROTO: |
a61680c6 | 1625 | case MFF_IP_TTL: |
530180fd JP |
1626 | case MFF_IP_DSCP: |
1627 | case MFF_IP_ECN: | |
6a885fd0 | 1628 | case MFF_ARP_OP: |
268a95e0 BP |
1629 | case MFF_ICMPV4_TYPE: |
1630 | case MFF_ICMPV4_CODE: | |
1631 | case MFF_ICMPV6_TYPE: | |
1632 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1633 | NOT_REACHED(); |
1634 | ||
1635 | case MFF_TUN_ID: | |
81a76618 | 1636 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1637 | break; |
4fe3445a PS |
1638 | case MFF_TUN_SRC: |
1639 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1640 | break; | |
1641 | case MFF_TUN_DST: | |
1642 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1643 | break; | |
1644 | case MFF_TUN_FLAGS: | |
1645 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1646 | break; | |
1647 | case MFF_TUN_TTL: | |
1648 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1649 | break; | |
1650 | case MFF_TUN_TOS: | |
1651 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1652 | break; | |
1653 | ||
969fc56c | 1654 | case MFF_METADATA: |
81a76618 | 1655 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1656 | break; |
6a885fd0 | 1657 | |
0d7e2fe4 | 1658 | CASE_MFF_REGS: |
81a76618 BP |
1659 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1660 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 BP |
1661 | break; |
1662 | ||
1663 | case MFF_ETH_DST: | |
81a76618 | 1664 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1665 | break; |
1666 | ||
1667 | case MFF_ETH_SRC: | |
81a76618 | 1668 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1669 | break; |
1670 | ||
e878338b SH |
1671 | case MFF_ARP_SHA: |
1672 | case MFF_ND_SLL: | |
81a76618 | 1673 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1674 | break; |
1675 | ||
1676 | case MFF_ARP_THA: | |
1677 | case MFF_ND_TLL: | |
81a76618 | 1678 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1679 | break; |
1680 | ||
6a885fd0 | 1681 | case MFF_VLAN_TCI: |
81a76618 | 1682 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1683 | break; |
1684 | ||
cc34bc8c | 1685 | case MFF_VLAN_VID: |
81a76618 | 1686 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1687 | break; |
1688 | ||
6a885fd0 | 1689 | case MFF_IPV4_SRC: |
81a76618 | 1690 | match_set_nw_src_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1691 | break; |
1692 | ||
1693 | case MFF_IPV4_DST: | |
81a76618 | 1694 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1695 | break; |
1696 | ||
1697 | case MFF_IPV6_SRC: | |
81a76618 | 1698 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1699 | break; |
1700 | ||
1701 | case MFF_IPV6_DST: | |
81a76618 | 1702 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1703 | break; |
1704 | ||
32455024 SH |
1705 | case MFF_IPV6_LABEL: |
1706 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1707 | mf_set_value(mf, value, match); |
32455024 | 1708 | } else { |
81a76618 | 1709 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1710 | } |
1711 | break; | |
1712 | ||
47284b1f | 1713 | case MFF_ND_TARGET: |
81a76618 | 1714 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1715 | break; |
1716 | ||
7257b535 | 1717 | case MFF_IP_FRAG: |
81a76618 | 1718 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1719 | break; |
1720 | ||
6a885fd0 | 1721 | case MFF_ARP_SPA: |
81a76618 | 1722 | match_set_nw_src_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1723 | break; |
1724 | ||
1725 | case MFF_ARP_TPA: | |
81a76618 | 1726 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
6a885fd0 BP |
1727 | break; |
1728 | ||
73f33563 BP |
1729 | case MFF_TCP_SRC: |
1730 | case MFF_UDP_SRC: | |
81a76618 | 1731 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1732 | break; |
1733 | ||
1734 | case MFF_TCP_DST: | |
1735 | case MFF_UDP_DST: | |
81a76618 | 1736 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1737 | break; |
1738 | ||
6a885fd0 BP |
1739 | case MFF_N_IDS: |
1740 | default: | |
1741 | NOT_REACHED(); | |
1742 | } | |
1743 | } | |
1744 | ||
816fd533 BP |
1745 | static enum ofperr |
1746 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1747 | const char *type) | |
6a885fd0 | 1748 | { |
816fd533 BP |
1749 | if (!sf->field) { |
1750 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
1751 | } else if (!sf->n_bits) { | |
1752 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
1753 | } else if (sf->ofs >= sf->field->n_bits) { | |
1754 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1755 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
1756 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { | |
1757 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1758 | "of %s field %s", sf->ofs, sf->n_bits, | |
1759 | sf->field->n_bits, type, sf->field->name); | |
1760 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { | |
1761 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1762 | type, sf->field->name); | |
6a885fd0 | 1763 | } else { |
816fd533 BP |
1764 | return 0; |
1765 | } | |
6a885fd0 | 1766 | |
816fd533 BP |
1767 | return OFPERR_OFPBAC_BAD_ARGUMENT; |
1768 | } | |
6a885fd0 | 1769 | |
816fd533 BP |
1770 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1771 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1772 | * ofp_mkerr()). */ | |
1773 | enum ofperr | |
1774 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1775 | { | |
1776 | return mf_check__(sf, flow, "source"); | |
1777 | } | |
6a885fd0 | 1778 | |
816fd533 BP |
1779 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1780 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1781 | * ofp_mkerr()). */ | |
1782 | enum ofperr | |
1783 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1784 | { | |
1785 | int error = mf_check__(sf, flow, "destination"); | |
1786 | if (!error && !sf->field->writable) { | |
1787 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1788 | sf->field->name); | |
1789 | return OFPERR_OFPBAC_BAD_ARGUMENT; | |
6a885fd0 | 1790 | } |
816fd533 | 1791 | return error; |
6a885fd0 BP |
1792 | } |
1793 | ||
81a76618 | 1794 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1795 | * 'value' and 'mask', respectively. */ |
1796 | void | |
81a76618 | 1797 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1798 | union mf_value *value, union mf_value *mask) |
1799 | { | |
81a76618 BP |
1800 | mf_get_value(mf, &match->flow, value); |
1801 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1802 | } |
1803 | ||
1804 | /* Assigns a random value for field 'mf' to 'value'. */ | |
1805 | void | |
1806 | mf_random_value(const struct mf_field *mf, union mf_value *value) | |
1807 | { | |
1808 | random_bytes(value, mf->n_bytes); | |
1809 | ||
1810 | switch (mf->id) { | |
1811 | case MFF_TUN_ID: | |
4fe3445a PS |
1812 | case MFF_TUN_SRC: |
1813 | case MFF_TUN_DST: | |
1814 | case MFF_TUN_TOS: | |
1815 | case MFF_TUN_TTL: | |
1816 | case MFF_TUN_FLAGS: | |
969fc56c | 1817 | case MFF_METADATA: |
6a885fd0 | 1818 | case MFF_IN_PORT: |
1b567fb9 AA |
1819 | case MFF_SKB_MARK: |
1820 | case MFF_SKB_PRIORITY: | |
0d7e2fe4 | 1821 | CASE_MFF_REGS: |
6a885fd0 BP |
1822 | case MFF_ETH_SRC: |
1823 | case MFF_ETH_DST: | |
1824 | case MFF_ETH_TYPE: | |
1825 | case MFF_VLAN_TCI: | |
1826 | case MFF_IPV4_SRC: | |
1827 | case MFF_IPV4_DST: | |
1828 | case MFF_IPV6_SRC: | |
1829 | case MFF_IPV6_DST: | |
1830 | case MFF_IP_PROTO: | |
a61680c6 | 1831 | case MFF_IP_TTL: |
6a885fd0 BP |
1832 | case MFF_ARP_SPA: |
1833 | case MFF_ARP_TPA: | |
1834 | case MFF_ARP_SHA: | |
1835 | case MFF_ARP_THA: | |
1836 | case MFF_TCP_SRC: | |
1837 | case MFF_TCP_DST: | |
1838 | case MFF_UDP_SRC: | |
1839 | case MFF_UDP_DST: | |
268a95e0 BP |
1840 | case MFF_ICMPV4_TYPE: |
1841 | case MFF_ICMPV4_CODE: | |
1842 | case MFF_ICMPV6_TYPE: | |
1843 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
1844 | case MFF_ND_TARGET: |
1845 | case MFF_ND_SLL: | |
1846 | case MFF_ND_TLL: | |
1847 | break; | |
1848 | ||
fa8223b7 JP |
1849 | case MFF_IPV6_LABEL: |
1850 | value->be32 &= ~htonl(IPV6_LABEL_MASK); | |
1851 | break; | |
1852 | ||
530180fd JP |
1853 | case MFF_IP_DSCP: |
1854 | value->u8 &= IP_DSCP_MASK; | |
1855 | break; | |
1856 | ||
1857 | case MFF_IP_ECN: | |
1858 | value->u8 &= IP_ECN_MASK; | |
6a885fd0 BP |
1859 | break; |
1860 | ||
7257b535 | 1861 | case MFF_IP_FRAG: |
eadef313 | 1862 | value->u8 &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
1863 | break; |
1864 | ||
6a885fd0 BP |
1865 | case MFF_ARP_OP: |
1866 | value->be16 &= htons(0xff); | |
1867 | break; | |
1868 | ||
441c57a9 | 1869 | case MFF_DL_VLAN: |
6a885fd0 BP |
1870 | value->be16 &= htons(VLAN_VID_MASK); |
1871 | break; | |
cc34bc8c BP |
1872 | case MFF_VLAN_VID: |
1873 | value->be16 &= htons(VLAN_VID_MASK | VLAN_CFI); | |
1874 | break; | |
6a885fd0 | 1875 | |
441c57a9 | 1876 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1877 | case MFF_VLAN_PCP: |
6a885fd0 BP |
1878 | value->u8 &= 0x07; |
1879 | break; | |
1880 | ||
1881 | case MFF_N_IDS: | |
1882 | default: | |
1883 | NOT_REACHED(); | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | static char * | |
1888 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1889 | uint8_t *valuep, uint8_t *maskp) | |
1890 | { | |
1891 | unsigned long long int integer, mask; | |
1892 | char *tail; | |
1893 | int i; | |
1894 | ||
1895 | errno = 0; | |
1896 | integer = strtoull(s, &tail, 0); | |
1897 | if (errno || (*tail != '\0' && *tail != '/')) { | |
1898 | goto syntax_error; | |
1899 | } | |
1900 | ||
1901 | if (*tail == '/') { | |
1902 | mask = strtoull(tail + 1, &tail, 0); | |
1903 | if (errno || *tail != '\0') { | |
1904 | goto syntax_error; | |
1905 | } | |
1906 | } else { | |
1907 | mask = ULLONG_MAX; | |
1908 | } | |
1909 | ||
1910 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
1911 | valuep[i] = integer; | |
1912 | maskp[i] = mask; | |
1913 | integer >>= 8; | |
1914 | mask >>= 8; | |
1915 | } | |
1916 | if (integer) { | |
1917 | return xasprintf("%s: value too large for %u-byte field %s", | |
1918 | s, mf->n_bytes, mf->name); | |
1919 | } | |
1920 | return NULL; | |
1921 | ||
1922 | syntax_error: | |
1923 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
1924 | } | |
1925 | ||
1926 | static char * | |
1927 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1928 | uint8_t mac[ETH_ADDR_LEN], | |
1929 | uint8_t mask[ETH_ADDR_LEN]) | |
1930 | { | |
cb22974d | 1931 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 BP |
1932 | |
1933 | switch (sscanf(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT, | |
1934 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask))){ | |
1935 | case ETH_ADDR_SCAN_COUNT * 2: | |
1936 | return NULL; | |
1937 | ||
1938 | case ETH_ADDR_SCAN_COUNT: | |
1939 | memset(mask, 0xff, ETH_ADDR_LEN); | |
1940 | return NULL; | |
1941 | ||
1942 | default: | |
1943 | return xasprintf("%s: invalid Ethernet address", s); | |
1944 | } | |
1945 | } | |
1946 | ||
1947 | static char * | |
1948 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1949 | ovs_be32 *ip, ovs_be32 *mask) | |
1950 | { | |
1951 | int prefix; | |
1952 | ||
cb22974d | 1953 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 BP |
1954 | |
1955 | if (sscanf(s, IP_SCAN_FMT"/"IP_SCAN_FMT, | |
1956 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask)) == IP_SCAN_COUNT * 2) { | |
1957 | /* OK. */ | |
1958 | } else if (sscanf(s, IP_SCAN_FMT"/%d", | |
1959 | IP_SCAN_ARGS(ip), &prefix) == IP_SCAN_COUNT + 1) { | |
1960 | if (prefix <= 0 || prefix > 32) { | |
1961 | return xasprintf("%s: network prefix bits not between 1 and " | |
1962 | "32", s); | |
1963 | } else if (prefix == 32) { | |
1964 | *mask = htonl(UINT32_MAX); | |
1965 | } else { | |
1966 | *mask = htonl(((1u << prefix) - 1) << (32 - prefix)); | |
1967 | } | |
1968 | } else if (sscanf(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip)) == IP_SCAN_COUNT) { | |
1969 | *mask = htonl(UINT32_MAX); | |
1970 | } else { | |
1971 | return xasprintf("%s: invalid IP address", s); | |
1972 | } | |
1973 | return NULL; | |
1974 | } | |
1975 | ||
1976 | static char * | |
1977 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1978 | struct in6_addr *value, struct in6_addr *mask) | |
1979 | { | |
1980 | char *str = xstrdup(s); | |
1981 | char *save_ptr = NULL; | |
1982 | const char *name, *netmask; | |
1983 | int retval; | |
1984 | ||
cb22974d | 1985 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
1986 | |
1987 | name = strtok_r(str, "/", &save_ptr); | |
1988 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1989 | if (retval) { | |
1990 | char *err; | |
1991 | ||
1992 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1993 | free(str); | |
1994 | ||
1995 | return err; | |
1996 | } | |
1997 | ||
1998 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1999 | if (netmask) { | |
ff0b06ee BP |
2000 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
2001 | int prefix = atoi(netmask); | |
2002 | if (prefix <= 0 || prefix > 128) { | |
2003 | free(str); | |
2004 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
2005 | } else { | |
2006 | *mask = ipv6_create_mask(prefix); | |
2007 | } | |
6a885fd0 BP |
2008 | } |
2009 | } else { | |
2010 | *mask = in6addr_exact; | |
2011 | } | |
2012 | free(str); | |
2013 | ||
2014 | return NULL; | |
2015 | } | |
2016 | ||
2017 | static char * | |
2018 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
2019 | ovs_be16 *valuep, ovs_be16 *maskp) | |
2020 | { | |
2021 | uint16_t port; | |
2022 | ||
cb22974d | 2023 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
05dddbac JP |
2024 | if (*s == '-') { |
2025 | return xasprintf("%s: negative values not supported for %s", | |
2026 | s, mf->name); | |
2027 | } else if (ofputil_port_from_string(s, &port)) { | |
6a885fd0 BP |
2028 | *valuep = htons(port); |
2029 | *maskp = htons(UINT16_MAX); | |
2030 | return NULL; | |
2031 | } else { | |
2032 | return mf_from_integer_string(mf, s, | |
2033 | (uint8_t *) valuep, (uint8_t *) maskp); | |
2034 | } | |
2035 | } | |
2036 | ||
7257b535 BP |
2037 | struct frag_handling { |
2038 | const char *name; | |
2039 | uint8_t mask; | |
2040 | uint8_t value; | |
2041 | }; | |
2042 | ||
2043 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
2044 | #define A FLOW_NW_FRAG_ANY |
2045 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
2046 | /* name mask value */ |
2047 | ||
2048 | { "no", A|L, 0 }, | |
2049 | { "first", A|L, A }, | |
2050 | { "later", A|L, A|L }, | |
2051 | ||
2052 | { "no", A, 0 }, | |
2053 | { "yes", A, A }, | |
2054 | ||
2055 | { "not_later", L, 0 }, | |
2056 | { "later", L, L }, | |
2057 | #undef A | |
2058 | #undef L | |
2059 | }; | |
2060 | ||
2061 | static char * | |
2062 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
2063 | { | |
2064 | const struct frag_handling *h; | |
2065 | ||
2066 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2067 | if (!strcasecmp(s, h->name)) { | |
2068 | /* We force the upper bits of the mask on to make mf_parse_value() | |
2069 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 2070 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
2071 | *valuep = h->value; |
2072 | return NULL; | |
2073 | } | |
2074 | } | |
2075 | ||
2076 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
2077 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
2078 | } | |
2079 | ||
4fe3445a PS |
2080 | static int |
2081 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
2082 | ovs_be16 *res) | |
2083 | { | |
2084 | uint32_t result = 0; | |
2085 | char *save_ptr = NULL; | |
2086 | char *name; | |
2087 | int rc = 0; | |
2088 | char *s = xstrdup(s_); | |
2089 | ||
2090 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
2091 | name = strtok_r(NULL, " |", &save_ptr)) { | |
2092 | int name_len; | |
2093 | unsigned long long int flags; | |
2094 | uint32_t bit; | |
2095 | int n0; | |
2096 | ||
2097 | if (sscanf(name, "%lli%n", &flags, &n0) > 0 && n0 > 0) { | |
2098 | result |= flags; | |
2099 | continue; | |
2100 | } | |
2101 | name_len = strlen(name); | |
2102 | for (bit = 1; bit; bit <<= 1) { | |
2103 | const char *fname = bit_to_string(bit); | |
2104 | size_t len; | |
2105 | ||
2106 | if (!fname) { | |
2107 | continue; | |
2108 | } | |
2109 | ||
2110 | len = strlen(fname); | |
2111 | if (len != name_len) { | |
2112 | continue; | |
2113 | } | |
2114 | if (!strncmp(name, fname, len)) { | |
2115 | result |= bit; | |
2116 | break; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | if (!bit) { | |
2121 | rc = -ENOENT; | |
2122 | goto out; | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | *res = htons(result); | |
2127 | out: | |
2128 | free(s); | |
2129 | return rc; | |
2130 | } | |
2131 | ||
2132 | static char * | |
b0aa8146 | 2133 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
2134 | { |
2135 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b0aa8146 | 2136 | *maskp = htons(UINT16_MAX); |
4fe3445a PS |
2137 | return NULL; |
2138 | } | |
2139 | ||
2140 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
2141 | "\"csum\", \"key\"", s); | |
2142 | } | |
2143 | ||
6a885fd0 BP |
2144 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
2145 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
2146 | char * | |
2147 | mf_parse(const struct mf_field *mf, const char *s, | |
2148 | union mf_value *value, union mf_value *mask) | |
2149 | { | |
bedde04c | 2150 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
2151 | memset(value, 0, mf->n_bytes); |
2152 | memset(mask, 0, mf->n_bytes); | |
2153 | return NULL; | |
2154 | } | |
2155 | ||
2156 | switch (mf->string) { | |
2157 | case MFS_DECIMAL: | |
2158 | case MFS_HEXADECIMAL: | |
2159 | return mf_from_integer_string(mf, s, | |
2160 | (uint8_t *) value, (uint8_t *) mask); | |
2161 | ||
2162 | case MFS_ETHERNET: | |
2163 | return mf_from_ethernet_string(mf, s, value->mac, mask->mac); | |
2164 | ||
2165 | case MFS_IPV4: | |
2166 | return mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); | |
2167 | ||
2168 | case MFS_IPV6: | |
2169 | return mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); | |
2170 | ||
2171 | case MFS_OFP_PORT: | |
2172 | return mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); | |
7257b535 BP |
2173 | |
2174 | case MFS_FRAG: | |
2175 | return mf_from_frag_string(s, &value->u8, &mask->u8); | |
4fe3445a PS |
2176 | |
2177 | case MFS_TNL_FLAGS: | |
cb22974d | 2178 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
b0aa8146 | 2179 | return mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
6a885fd0 BP |
2180 | } |
2181 | NOT_REACHED(); | |
2182 | } | |
2183 | ||
2184 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2185 | * successful, otherwise a malloc()'d string describing the error. */ | |
2186 | char * | |
2187 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2188 | { | |
2189 | union mf_value mask; | |
2190 | char *error; | |
2191 | ||
2192 | error = mf_parse(mf, s, value, &mask); | |
2193 | if (error) { | |
2194 | return error; | |
2195 | } | |
2196 | ||
2197 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2198 | return xasprintf("%s: wildcards not allowed here", s); | |
2199 | } | |
2200 | return NULL; | |
2201 | } | |
2202 | ||
2203 | static void | |
2204 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2205 | const uint8_t *maskp, struct ds *s) | |
2206 | { | |
2207 | unsigned long long int integer; | |
2208 | int i; | |
2209 | ||
cb22974d | 2210 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 BP |
2211 | |
2212 | integer = 0; | |
2213 | for (i = 0; i < mf->n_bytes; i++) { | |
2214 | integer = (integer << 8) | valuep[i]; | |
2215 | } | |
2216 | if (mf->string == MFS_HEXADECIMAL) { | |
2217 | ds_put_format(s, "%#llx", integer); | |
2218 | } else { | |
2219 | ds_put_format(s, "%lld", integer); | |
2220 | } | |
2221 | ||
2222 | if (maskp) { | |
2223 | unsigned long long int mask; | |
2224 | ||
2225 | mask = 0; | |
2226 | for (i = 0; i < mf->n_bytes; i++) { | |
2227 | mask = (mask << 8) | maskp[i]; | |
2228 | } | |
2229 | ||
2230 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2231 | * not sure that that a bit-mask written in decimal is ever easier to | |
2232 | * understand than the same bit-mask written in hexadecimal. */ | |
2233 | ds_put_format(s, "/%#llx", mask); | |
2234 | } | |
2235 | } | |
2236 | ||
7257b535 BP |
2237 | static void |
2238 | mf_format_frag_string(const uint8_t *valuep, const uint8_t *maskp, | |
2239 | struct ds *s) | |
2240 | { | |
2241 | const struct frag_handling *h; | |
2242 | uint8_t value = *valuep; | |
2243 | uint8_t mask = *maskp; | |
2244 | ||
2245 | value &= mask; | |
eadef313 | 2246 | mask &= FLOW_NW_FRAG_MASK; |
7257b535 BP |
2247 | |
2248 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2249 | if (value == h->value && mask == h->mask) { | |
2250 | ds_put_cstr(s, h->name); | |
2251 | return; | |
2252 | } | |
2253 | } | |
2254 | ds_put_cstr(s, "<error>"); | |
2255 | } | |
2256 | ||
4fe3445a PS |
2257 | static void |
2258 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2259 | { | |
2260 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2261 | } | |
2262 | ||
6a885fd0 BP |
2263 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2264 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2265 | void | |
2266 | mf_format(const struct mf_field *mf, | |
2267 | const union mf_value *value, const union mf_value *mask, | |
2268 | struct ds *s) | |
2269 | { | |
2270 | if (mask) { | |
2271 | if (is_all_zeros((const uint8_t *) mask, mf->n_bytes)) { | |
2272 | ds_put_cstr(s, "ANY"); | |
2273 | return; | |
2274 | } else if (is_all_ones((const uint8_t *) mask, mf->n_bytes)) { | |
2275 | mask = NULL; | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | switch (mf->string) { | |
2280 | case MFS_OFP_PORT: | |
2281 | if (!mask) { | |
2282 | ofputil_format_port(ntohs(value->be16), s); | |
2283 | break; | |
2284 | } | |
2285 | /* fall through */ | |
2286 | case MFS_DECIMAL: | |
2287 | case MFS_HEXADECIMAL: | |
2288 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2289 | break; | |
2290 | ||
2291 | case MFS_ETHERNET: | |
3b4d8ad3 | 2292 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2293 | break; |
2294 | ||
2295 | case MFS_IPV4: | |
2296 | ip_format_masked(value->be32, mask ? mask->be32 : htonl(UINT32_MAX), | |
2297 | s); | |
2298 | break; | |
2299 | ||
2300 | case MFS_IPV6: | |
2301 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2302 | break; | |
2303 | ||
7257b535 BP |
2304 | case MFS_FRAG: |
2305 | mf_format_frag_string(&value->u8, &mask->u8, s); | |
2306 | break; | |
2307 | ||
4fe3445a PS |
2308 | case MFS_TNL_FLAGS: |
2309 | mf_format_tnl_flags_string(&value->be16, s); | |
2310 | break; | |
2311 | ||
6a885fd0 BP |
2312 | default: |
2313 | NOT_REACHED(); | |
2314 | } | |
2315 | } | |
816fd533 | 2316 | \f |
9bab681f IY |
2317 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2318 | * least-significant bits in 'x'. | |
2319 | */ | |
2320 | void | |
2321 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2322 | const union mf_subvalue *x, struct flow *flow) | |
2323 | { | |
2324 | const struct mf_field *field = sf->field; | |
2325 | union mf_value value; | |
2326 | ||
2327 | mf_get_value(field, flow, &value); | |
158edc8d | 2328 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2329 | sf->ofs, sf->n_bits); |
2330 | mf_set_flow_value(field, &value, flow); | |
2331 | } | |
2332 | ||
81a76618 | 2333 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2334 | * least-significant bits in 'x'. |
615660a9 | 2335 | */ |
1b35df45 BP |
2336 | void |
2337 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2338 | struct match *match) |
1b35df45 BP |
2339 | { |
2340 | const struct mf_field *field = sf->field; | |
2341 | union mf_value value, mask; | |
2342 | ||
81a76618 | 2343 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2344 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2345 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2346 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2347 | } |
2348 | ||
1b35df45 BP |
2349 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2350 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2351 | void | |
2352 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2353 | union mf_subvalue *x) | |
2354 | { | |
2355 | union mf_value value; | |
2356 | ||
2357 | mf_get_value(sf->field, flow, &value); | |
2358 | ||
2359 | memset(x, 0, sizeof *x); | |
2360 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2361 | x, sizeof *x, 0, | |
2362 | sf->n_bits); | |
2363 | } | |
2364 | ||
816fd533 BP |
2365 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2366 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2367 | * less. */ | |
2368 | uint64_t | |
2369 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2370 | { | |
2371 | union mf_value value; | |
2372 | ||
2373 | mf_get_value(sf->field, flow, &value); | |
2374 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2375 | } | |
2376 | ||
2377 | /* Formats 'sf' into 's' in a format normally acceptable to | |
2378 | * mf_parse_subfield(). (It won't be acceptable if sf->field is NULL or if | |
2379 | * sf->field has no NXM name.) */ | |
2380 | void | |
2381 | mf_format_subfield(const struct mf_subfield *sf, struct ds *s) | |
2382 | { | |
2383 | if (!sf->field) { | |
2384 | ds_put_cstr(s, "<unknown>"); | |
2385 | } else if (sf->field->nxm_name) { | |
2386 | ds_put_cstr(s, sf->field->nxm_name); | |
2387 | } else if (sf->field->nxm_header) { | |
2388 | uint32_t header = sf->field->nxm_header; | |
2389 | ds_put_format(s, "%d:%d", NXM_VENDOR(header), NXM_FIELD(header)); | |
2390 | } else { | |
2391 | ds_put_cstr(s, sf->field->name); | |
2392 | } | |
2393 | ||
33500edd | 2394 | if (sf->field && sf->ofs == 0 && sf->n_bits == sf->field->n_bits) { |
816fd533 BP |
2395 | ds_put_cstr(s, "[]"); |
2396 | } else if (sf->n_bits == 1) { | |
2397 | ds_put_format(s, "[%d]", sf->ofs); | |
2398 | } else { | |
2399 | ds_put_format(s, "[%d..%d]", sf->ofs, sf->ofs + sf->n_bits - 1); | |
2400 | } | |
2401 | } | |
2402 | ||
2403 | static const struct mf_field * | |
2404 | mf_parse_subfield_name(const char *name, int name_len, bool *wild) | |
2405 | { | |
2406 | int i; | |
2407 | ||
2408 | *wild = name_len > 2 && !memcmp(&name[name_len - 2], "_W", 2); | |
2409 | if (*wild) { | |
2410 | name_len -= 2; | |
2411 | } | |
2412 | ||
2413 | for (i = 0; i < MFF_N_IDS; i++) { | |
2414 | const struct mf_field *mf = mf_from_id(i); | |
2415 | ||
2416 | if (mf->nxm_name | |
2417 | && !strncmp(mf->nxm_name, name, name_len) | |
2418 | && mf->nxm_name[name_len] == '\0') { | |
2419 | return mf; | |
2420 | } | |
b5e5143b BP |
2421 | if (mf->oxm_name |
2422 | && !strncmp(mf->oxm_name, name, name_len) | |
2423 | && mf->oxm_name[name_len] == '\0') { | |
2424 | return mf; | |
2425 | } | |
816fd533 BP |
2426 | } |
2427 | ||
2428 | return NULL; | |
2429 | } | |
2430 | ||
2431 | /* Parses a subfield from the beginning of '*sp' into 'sf'. If successful, | |
2432 | * returns NULL and advances '*sp' to the first byte following the parsed | |
2433 | * string. On failure, returns a malloc()'d error message, does not modify | |
2434 | * '*sp', and does not properly initialize 'sf'. | |
2435 | * | |
2436 | * The syntax parsed from '*sp' takes the form "header[start..end]" where | |
2437 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2438 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2439 | * may both be omitted (the [] are still required) to indicate an entire | |
2440 | * field. */ | |
2441 | char * | |
2442 | mf_parse_subfield__(struct mf_subfield *sf, const char **sp) | |
2443 | { | |
2444 | const struct mf_field *field; | |
2445 | const char *name; | |
2446 | int start, end; | |
2447 | const char *s; | |
2448 | int name_len; | |
2449 | bool wild; | |
2450 | ||
2451 | s = *sp; | |
2452 | name = s; | |
2453 | name_len = strcspn(s, "["); | |
2454 | if (s[name_len] != '[') { | |
2455 | return xasprintf("%s: missing [ looking for field name", *sp); | |
2456 | } | |
2457 | ||
2458 | field = mf_parse_subfield_name(name, name_len, &wild); | |
2459 | if (!field) { | |
2460 | return xasprintf("%s: unknown field `%.*s'", *sp, name_len, s); | |
2461 | } | |
2462 | ||
2463 | s += name_len; | |
2464 | if (sscanf(s, "[%d..%d]", &start, &end) == 2) { | |
2465 | /* Nothing to do. */ | |
2466 | } else if (sscanf(s, "[%d]", &start) == 1) { | |
2467 | end = start; | |
2468 | } else if (!strncmp(s, "[]", 2)) { | |
2469 | start = 0; | |
2470 | end = field->n_bits - 1; | |
2471 | } else { | |
2472 | return xasprintf("%s: syntax error expecting [] or [<bit>] or " | |
2473 | "[<start>..<end>]", *sp); | |
2474 | } | |
2475 | s = strchr(s, ']') + 1; | |
2476 | ||
2477 | if (start > end) { | |
2478 | return xasprintf("%s: starting bit %d is after ending bit %d", | |
2479 | *sp, start, end); | |
2480 | } else if (start >= field->n_bits) { | |
2481 | return xasprintf("%s: starting bit %d is not valid because field is " | |
2482 | "only %d bits wide", *sp, start, field->n_bits); | |
2483 | } else if (end >= field->n_bits){ | |
2484 | return xasprintf("%s: ending bit %d is not valid because field is " | |
2485 | "only %d bits wide", *sp, end, field->n_bits); | |
2486 | } | |
2487 | ||
2488 | sf->field = field; | |
2489 | sf->ofs = start; | |
2490 | sf->n_bits = end - start + 1; | |
2491 | ||
2492 | *sp = s; | |
2493 | return NULL; | |
2494 | } | |
2495 | ||
2496 | /* Parses a subfield from the beginning of 's' into 'sf'. Returns the first | |
2497 | * byte in 's' following the parsed string. | |
2498 | * | |
2499 | * Exits with an error message if 's' has incorrect syntax. | |
2500 | * | |
2501 | * The syntax parsed from 's' takes the form "header[start..end]" where | |
2502 | * 'header' is the name of an NXM field and 'start' and 'end' are (inclusive) | |
2503 | * bit indexes. "..end" may be omitted to indicate a single bit. "start..end" | |
2504 | * may both be omitted (the [] are still required) to indicate an entire | |
2505 | * field. */ | |
2506 | const char * | |
2507 | mf_parse_subfield(struct mf_subfield *sf, const char *s) | |
2508 | { | |
2509 | char *msg = mf_parse_subfield__(sf, &s); | |
2510 | if (msg) { | |
2511 | ovs_fatal(0, "%s", msg); | |
2512 | } | |
2513 | return s; | |
2514 | } | |
9bab681f IY |
2515 | |
2516 | void | |
2517 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2518 | { | |
2519 | int i; | |
2520 | ||
2521 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2522 | if (subvalue->u8[i]) { | |
2523 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2524 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2525 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2526 | } | |
2527 | return; | |
2528 | } | |
2529 | } | |
2530 | ds_put_char(s, '0'); | |
2531 | } |