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6a885fd0 | 1 | /* |
9d84066c | 2 | * Copyright (c) 2011, 2012, 2013, 2014 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" | |
178742f9 | 28 | #include "nx-match.h" |
816fd533 | 29 | #include "ofp-errors.h" |
6a885fd0 | 30 | #include "ofp-util.h" |
4663f9e0 | 31 | #include "ovs-thread.h" |
6a885fd0 BP |
32 | #include "packets.h" |
33 | #include "random.h" | |
34 | #include "shash.h" | |
35 | #include "socket-util.h" | |
36 | #include "unaligned.h" | |
86f35fb5 | 37 | #include "util.h" |
816fd533 BP |
38 | #include "vlog.h" |
39 | ||
40 | VLOG_DEFINE_THIS_MODULE(meta_flow); | |
6a885fd0 | 41 | |
13751fd8 JR |
42 | #define FLOW_U32OFS(FIELD) \ |
43 | offsetof(struct flow, FIELD) % 4 ? -1 : offsetof(struct flow, FIELD) / 4 | |
44 | ||
6a885fd0 BP |
45 | #define MF_FIELD_SIZES(MEMBER) \ |
46 | sizeof ((union mf_value *)0)->MEMBER, \ | |
47 | 8 * sizeof ((union mf_value *)0)->MEMBER | |
48 | ||
7f98c44d JR |
49 | extern const struct mf_field mf_fields[MFF_N_IDS]; /* Silence a warning. */ |
50 | ||
51 | const struct mf_field mf_fields[MFF_N_IDS] = { | |
a4ce8b25 | 52 | #include "meta-flow.inc" |
6a885fd0 BP |
53 | }; |
54 | ||
4663f9e0 BP |
55 | /* Maps from an mf_field's 'name' or 'extra_name' to the mf_field. */ |
56 | static struct shash mf_by_name; | |
28da1f8f | 57 | |
816fd533 BP |
58 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
59 | * controller and so there's not much point in showing a lot of them. */ | |
60 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
61 | ||
4663f9e0 | 62 | static void nxm_init(void); |
b5e5143b | 63 | |
6a885fd0 BP |
64 | /* Returns the field with the given 'name', or a null pointer if no field has |
65 | * that name. */ | |
66 | const struct mf_field * | |
67 | mf_from_name(const char *name) | |
68 | { | |
4663f9e0 | 69 | nxm_init(); |
6a885fd0 BP |
70 | return shash_find_data(&mf_by_name, name); |
71 | } | |
72 | ||
28da1f8f | 73 | static void |
4663f9e0 | 74 | nxm_do_init(void) |
28da1f8f | 75 | { |
216a32dd | 76 | int i; |
28da1f8f | 77 | |
4663f9e0 | 78 | shash_init(&mf_by_name); |
216a32dd JR |
79 | for (i = 0; i < MFF_N_IDS; i++) { |
80 | const struct mf_field *mf = &mf_fields[i]; | |
81 | ||
82 | ovs_assert(mf->id == i); /* Fields must be in the enum order. */ | |
83 | ||
4663f9e0 BP |
84 | shash_add_once(&mf_by_name, mf->name, mf); |
85 | if (mf->extra_name) { | |
86 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
87 | } | |
28da1f8f | 88 | } |
28da1f8f BP |
89 | } |
90 | ||
4663f9e0 BP |
91 | static void |
92 | nxm_init(void) | |
93 | { | |
94 | static pthread_once_t once = PTHREAD_ONCE_INIT; | |
95 | pthread_once(&once, nxm_do_init); | |
96 | } | |
97 | ||
6a885fd0 BP |
98 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
99 | * specifies at least one bit in the field. | |
100 | * | |
101 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
102 | * meets 'mf''s prerequisites. */ | |
103 | bool | |
104 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
105 | { | |
106 | switch (mf->id) { | |
a79f29f2 AZ |
107 | case MFF_DP_HASH: |
108 | return !wc->masks.dp_hash; | |
109 | case MFF_RECIRC_ID: | |
110 | return !wc->masks.recirc_id; | |
4fe3445a | 111 | case MFF_TUN_SRC: |
0ad90c84 | 112 | return !wc->masks.tunnel.ip_src; |
4fe3445a | 113 | case MFF_TUN_DST: |
0ad90c84 JR |
114 | return !wc->masks.tunnel.ip_dst; |
115 | case MFF_TUN_ID: | |
4fe3445a PS |
116 | case MFF_TUN_TOS: |
117 | case MFF_TUN_TTL: | |
118 | case MFF_TUN_FLAGS: | |
296e07ac | 119 | return !wc->masks.tunnel.tun_id; |
969fc56c | 120 | case MFF_METADATA: |
26720e24 | 121 | return !wc->masks.metadata; |
0bdc4bec | 122 | case MFF_IN_PORT: |
72333065 | 123 | case MFF_IN_PORT_OXM: |
4e022ec0 | 124 | return !wc->masks.in_port.ofp_port; |
1b567fb9 AA |
125 | case MFF_SKB_PRIORITY: |
126 | return !wc->masks.skb_priority; | |
1362e248 JG |
127 | case MFF_PKT_MARK: |
128 | return !wc->masks.pkt_mark; | |
0d7e2fe4 | 129 | CASE_MFF_REGS: |
26720e24 | 130 | return !wc->masks.regs[mf->id - MFF_REG0]; |
79fe0f46 BP |
131 | CASE_MFF_XREGS: |
132 | return !flow_get_xreg(&wc->masks, mf->id - MFF_XREG0); | |
c61f3870 BP |
133 | case MFF_ACTSET_OUTPUT: |
134 | return !wc->masks.actset_output; | |
6a885fd0 | 135 | |
73c0ce34 | 136 | case MFF_ETH_SRC: |
26720e24 | 137 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 138 | case MFF_ETH_DST: |
26720e24 | 139 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 140 | case MFF_ETH_TYPE: |
26720e24 | 141 | return !wc->masks.dl_type; |
6a885fd0 | 142 | |
e878338b SH |
143 | case MFF_ARP_SHA: |
144 | case MFF_ND_SLL: | |
26720e24 | 145 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
146 | |
147 | case MFF_ARP_THA: | |
148 | case MFF_ND_TLL: | |
26720e24 | 149 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 150 | |
6a885fd0 | 151 | case MFF_VLAN_TCI: |
26720e24 | 152 | return !wc->masks.vlan_tci; |
441c57a9 | 153 | case MFF_DL_VLAN: |
26720e24 | 154 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 155 | case MFF_VLAN_VID: |
26720e24 | 156 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 157 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 158 | case MFF_VLAN_PCP: |
26720e24 | 159 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 | 160 | |
b02475c5 | 161 | case MFF_MPLS_LABEL: |
8bfd0fda | 162 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)); |
b02475c5 | 163 | case MFF_MPLS_TC: |
60df616f | 164 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK)); |
b02475c5 | 165 | case MFF_MPLS_BOS: |
60df616f | 166 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)); |
b02475c5 | 167 | |
6a885fd0 | 168 | case MFF_IPV4_SRC: |
26720e24 | 169 | return !wc->masks.nw_src; |
6a885fd0 | 170 | case MFF_IPV4_DST: |
26720e24 | 171 | return !wc->masks.nw_dst; |
6a885fd0 BP |
172 | |
173 | case MFF_IPV6_SRC: | |
26720e24 | 174 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 175 | case MFF_IPV6_DST: |
26720e24 | 176 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 177 | |
32455024 | 178 | case MFF_IPV6_LABEL: |
26720e24 | 179 | return !wc->masks.ipv6_label; |
32455024 | 180 | |
851d3105 | 181 | case MFF_IP_PROTO: |
26720e24 | 182 | return !wc->masks.nw_proto; |
5d9499c4 | 183 | case MFF_IP_DSCP: |
1638b906 | 184 | case MFF_IP_DSCP_SHIFTED: |
26720e24 | 185 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 186 | case MFF_IP_ECN: |
26720e24 | 187 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 188 | case MFF_IP_TTL: |
26720e24 | 189 | return !wc->masks.nw_ttl; |
5d9499c4 | 190 | |
47284b1f | 191 | case MFF_ND_TARGET: |
26720e24 | 192 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 193 | |
7257b535 | 194 | case MFF_IP_FRAG: |
26720e24 | 195 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 196 | |
851d3105 | 197 | case MFF_ARP_OP: |
26720e24 | 198 | return !wc->masks.nw_proto; |
6a885fd0 | 199 | case MFF_ARP_SPA: |
26720e24 | 200 | return !wc->masks.nw_src; |
6a885fd0 | 201 | case MFF_ARP_TPA: |
26720e24 | 202 | return !wc->masks.nw_dst; |
6a885fd0 | 203 | |
73f33563 BP |
204 | case MFF_TCP_SRC: |
205 | case MFF_UDP_SRC: | |
0d56eaf2 | 206 | case MFF_SCTP_SRC: |
73f33563 BP |
207 | case MFF_ICMPV4_TYPE: |
208 | case MFF_ICMPV6_TYPE: | |
26720e24 | 209 | return !wc->masks.tp_src; |
73f33563 BP |
210 | case MFF_TCP_DST: |
211 | case MFF_UDP_DST: | |
0d56eaf2 | 212 | case MFF_SCTP_DST: |
73f33563 BP |
213 | case MFF_ICMPV4_CODE: |
214 | case MFF_ICMPV6_CODE: | |
26720e24 | 215 | return !wc->masks.tp_dst; |
dc235f7f JR |
216 | case MFF_TCP_FLAGS: |
217 | return !wc->masks.tcp_flags; | |
73f33563 | 218 | |
6a885fd0 BP |
219 | case MFF_N_IDS: |
220 | default: | |
428b2edd | 221 | OVS_NOT_REACHED(); |
6a885fd0 BP |
222 | } |
223 | } | |
224 | ||
225 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
226 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
227 | * purposes, or to 0 if it is wildcarded. | |
228 | * | |
229 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
230 | * meets 'mf''s prerequisites. */ | |
231 | void | |
232 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
233 | union mf_value *mask) | |
234 | { | |
fb15feb0 | 235 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
236 | } |
237 | ||
238 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
239 | * if the mask is valid, false otherwise. */ | |
240 | bool | |
241 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
242 | { | |
243 | switch (mf->maskable) { | |
244 | case MFM_NONE: | |
53cb9c3e JR |
245 | return (is_all_zeros(mask, mf->n_bytes) || |
246 | is_all_ones(mask, mf->n_bytes)); | |
6a885fd0 BP |
247 | |
248 | case MFM_FULLY: | |
249 | return true; | |
6a885fd0 BP |
250 | } |
251 | ||
428b2edd | 252 | OVS_NOT_REACHED(); |
6a885fd0 BP |
253 | } |
254 | ||
6a885fd0 BP |
255 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ |
256 | bool | |
257 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
258 | { | |
259 | switch (mf->prereqs) { | |
260 | case MFP_NONE: | |
261 | return true; | |
262 | ||
263 | case MFP_ARP: | |
8087f5ff MM |
264 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
265 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
266 | case MFP_IPV4: |
267 | return flow->dl_type == htons(ETH_TYPE_IP); | |
268 | case MFP_IPV6: | |
269 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 270 | case MFP_VLAN_VID: |
5921e99a | 271 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
b02475c5 SH |
272 | case MFP_MPLS: |
273 | return eth_type_mpls(flow->dl_type); | |
6a885fd0 BP |
274 | case MFP_IP_ANY: |
275 | return is_ip_any(flow); | |
276 | ||
277 | case MFP_TCP: | |
b8778a0d JR |
278 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP |
279 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
6a885fd0 | 280 | case MFP_UDP: |
b8778a0d JR |
281 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP |
282 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
0d56eaf2 | 283 | case MFP_SCTP: |
b8778a0d JR |
284 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_SCTP |
285 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
268a95e0 BP |
286 | case MFP_ICMPV4: |
287 | return is_icmpv4(flow); | |
6a885fd0 BP |
288 | case MFP_ICMPV6: |
289 | return is_icmpv6(flow); | |
6a885fd0 BP |
290 | |
291 | case MFP_ND: | |
292 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
293 | && flow->tp_dst == htons(0) |
294 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
295 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
296 | case MFP_ND_SOLICIT: |
297 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
298 | && flow->tp_dst == htons(0) |
299 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
300 | case MFP_ND_ADVERT: |
301 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
302 | && flow->tp_dst == htons(0) |
303 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
304 | } |
305 | ||
428b2edd | 306 | OVS_NOT_REACHED(); |
6a885fd0 BP |
307 | } |
308 | ||
b283836c JR |
309 | /* Set field and it's prerequisities in the mask. |
310 | * This is only ever called for writeable 'mf's, but we do not make the | |
311 | * distinction here. */ | |
312 | void | |
313 | mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow *mask) | |
314 | { | |
315 | static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER; | |
316 | ||
317 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
318 | ||
319 | switch (mf->prereqs) { | |
320 | case MFP_ND: | |
321 | case MFP_ND_SOLICIT: | |
322 | case MFP_ND_ADVERT: | |
323 | mask->tp_src = OVS_BE16_MAX; | |
324 | mask->tp_dst = OVS_BE16_MAX; | |
325 | /* Fall through. */ | |
326 | case MFP_TCP: | |
327 | case MFP_UDP: | |
328 | case MFP_SCTP: | |
329 | case MFP_ICMPV4: | |
330 | case MFP_ICMPV6: | |
b8778a0d | 331 | /* nw_frag always unwildcarded. */ |
b283836c JR |
332 | mask->nw_proto = 0xff; |
333 | /* Fall through. */ | |
334 | case MFP_ARP: | |
335 | case MFP_IPV4: | |
336 | case MFP_IPV6: | |
337 | case MFP_MPLS: | |
338 | case MFP_IP_ANY: | |
339 | mask->dl_type = OVS_BE16_MAX; | |
340 | break; | |
341 | case MFP_VLAN_VID: | |
342 | mask->vlan_tci |= htons(VLAN_CFI); | |
343 | break; | |
344 | case MFP_NONE: | |
345 | break; | |
346 | } | |
347 | } | |
348 | ||
349 | ||
6a885fd0 BP |
350 | /* Returns true if 'value' may be a valid value *as part of a masked match*, |
351 | * false otherwise. | |
352 | * | |
353 | * A value is not rejected just because it is not valid for the field in | |
354 | * question, but only if it doesn't make sense to test the bits in question at | |
355 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
356 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
357 | * it is still legitimate to test just for those bits (see the documentation | |
358 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 359 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
360 | bool |
361 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
362 | { | |
363 | switch (mf->id) { | |
a79f29f2 AZ |
364 | case MFF_DP_HASH: |
365 | case MFF_RECIRC_ID: | |
6a885fd0 | 366 | case MFF_TUN_ID: |
4fe3445a PS |
367 | case MFF_TUN_SRC: |
368 | case MFF_TUN_DST: | |
369 | case MFF_TUN_TOS: | |
370 | case MFF_TUN_TTL: | |
371 | case MFF_TUN_FLAGS: | |
969fc56c | 372 | case MFF_METADATA: |
6a885fd0 | 373 | case MFF_IN_PORT: |
1b567fb9 | 374 | case MFF_SKB_PRIORITY: |
1362e248 | 375 | case MFF_PKT_MARK: |
0d7e2fe4 | 376 | CASE_MFF_REGS: |
79fe0f46 | 377 | CASE_MFF_XREGS: |
6a885fd0 BP |
378 | case MFF_ETH_SRC: |
379 | case MFF_ETH_DST: | |
380 | case MFF_ETH_TYPE: | |
381 | case MFF_VLAN_TCI: | |
382 | case MFF_IPV4_SRC: | |
383 | case MFF_IPV4_DST: | |
384 | case MFF_IPV6_SRC: | |
385 | case MFF_IPV6_DST: | |
386 | case MFF_IP_PROTO: | |
a61680c6 | 387 | case MFF_IP_TTL: |
6a885fd0 BP |
388 | case MFF_ARP_SPA: |
389 | case MFF_ARP_TPA: | |
390 | case MFF_ARP_SHA: | |
391 | case MFF_ARP_THA: | |
392 | case MFF_TCP_SRC: | |
393 | case MFF_TCP_DST: | |
394 | case MFF_UDP_SRC: | |
395 | case MFF_UDP_DST: | |
0d56eaf2 JS |
396 | case MFF_SCTP_SRC: |
397 | case MFF_SCTP_DST: | |
268a95e0 BP |
398 | case MFF_ICMPV4_TYPE: |
399 | case MFF_ICMPV4_CODE: | |
400 | case MFF_ICMPV6_TYPE: | |
401 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
402 | case MFF_ND_TARGET: |
403 | case MFF_ND_SLL: | |
404 | case MFF_ND_TLL: | |
405 | return true; | |
406 | ||
c61f3870 BP |
407 | case MFF_IN_PORT_OXM: |
408 | case MFF_ACTSET_OUTPUT: { | |
4e022ec0 | 409 | ofp_port_t port; |
72333065 JR |
410 | return !ofputil_port_from_ofp11(value->be32, &port); |
411 | } | |
412 | ||
530180fd | 413 | case MFF_IP_DSCP: |
7257b535 | 414 | return !(value->u8 & ~IP_DSCP_MASK); |
1638b906 BP |
415 | case MFF_IP_DSCP_SHIFTED: |
416 | return !(value->u8 & (~IP_DSCP_MASK >> 2)); | |
530180fd JP |
417 | case MFF_IP_ECN: |
418 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 419 | case MFF_IP_FRAG: |
eadef313 | 420 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
dc235f7f JR |
421 | case MFF_TCP_FLAGS: |
422 | return !(value->be16 & ~htons(0x0fff)); | |
6a885fd0 BP |
423 | |
424 | case MFF_ARP_OP: | |
425 | return !(value->be16 & htons(0xff00)); | |
426 | ||
441c57a9 | 427 | case MFF_DL_VLAN: |
6a885fd0 | 428 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
429 | case MFF_VLAN_VID: |
430 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 431 | |
441c57a9 | 432 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 433 | case MFF_VLAN_PCP: |
24016f5a | 434 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 435 | |
fa8223b7 JP |
436 | case MFF_IPV6_LABEL: |
437 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
438 | ||
b02475c5 SH |
439 | case MFF_MPLS_LABEL: |
440 | return !(value->be32 & ~htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT)); | |
441 | ||
442 | case MFF_MPLS_TC: | |
443 | return !(value->u8 & ~(MPLS_TC_MASK >> MPLS_TC_SHIFT)); | |
444 | ||
445 | case MFF_MPLS_BOS: | |
446 | return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT)); | |
447 | ||
6a885fd0 BP |
448 | case MFF_N_IDS: |
449 | default: | |
428b2edd | 450 | OVS_NOT_REACHED(); |
6a885fd0 BP |
451 | } |
452 | } | |
453 | ||
454 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
455 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
456 | void | |
457 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
458 | union mf_value *value) | |
459 | { | |
460 | switch (mf->id) { | |
a79f29f2 AZ |
461 | case MFF_DP_HASH: |
462 | value->be32 = htonl(flow->dp_hash); | |
463 | break; | |
464 | case MFF_RECIRC_ID: | |
465 | value->be32 = htonl(flow->recirc_id); | |
466 | break; | |
6a885fd0 | 467 | case MFF_TUN_ID: |
296e07ac | 468 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 469 | break; |
4fe3445a PS |
470 | case MFF_TUN_SRC: |
471 | value->be32 = flow->tunnel.ip_src; | |
472 | break; | |
473 | case MFF_TUN_DST: | |
474 | value->be32 = flow->tunnel.ip_dst; | |
475 | break; | |
476 | case MFF_TUN_FLAGS: | |
477 | value->be16 = htons(flow->tunnel.flags); | |
478 | break; | |
479 | case MFF_TUN_TTL: | |
480 | value->u8 = flow->tunnel.ip_ttl; | |
481 | break; | |
482 | case MFF_TUN_TOS: | |
483 | value->u8 = flow->tunnel.ip_tos; | |
484 | break; | |
485 | ||
969fc56c JS |
486 | case MFF_METADATA: |
487 | value->be64 = flow->metadata; | |
488 | break; | |
6a885fd0 BP |
489 | |
490 | case MFF_IN_PORT: | |
4e022ec0 | 491 | value->be16 = htons(ofp_to_u16(flow->in_port.ofp_port)); |
6a885fd0 | 492 | break; |
72333065 | 493 | case MFF_IN_PORT_OXM: |
4e022ec0 | 494 | value->be32 = ofputil_port_to_ofp11(flow->in_port.ofp_port); |
72333065 | 495 | break; |
c61f3870 BP |
496 | case MFF_ACTSET_OUTPUT: |
497 | value->be32 = ofputil_port_to_ofp11(flow->actset_output); | |
498 | break; | |
72333065 | 499 | |
1b567fb9 | 500 | case MFF_SKB_PRIORITY: |
a81f0a44 | 501 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
502 | break; |
503 | ||
1362e248 JG |
504 | case MFF_PKT_MARK: |
505 | value->be32 = htonl(flow->pkt_mark); | |
1b567fb9 AA |
506 | break; |
507 | ||
0d7e2fe4 | 508 | CASE_MFF_REGS: |
2f98b0b7 | 509 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
510 | break; |
511 | ||
79fe0f46 BP |
512 | CASE_MFF_XREGS: |
513 | value->be64 = htonll(flow_get_xreg(flow, mf->id - MFF_XREG0)); | |
514 | break; | |
515 | ||
6a885fd0 BP |
516 | case MFF_ETH_SRC: |
517 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
518 | break; | |
519 | ||
520 | case MFF_ETH_DST: | |
521 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
522 | break; | |
523 | ||
524 | case MFF_ETH_TYPE: | |
525 | value->be16 = flow->dl_type; | |
526 | break; | |
527 | ||
528 | case MFF_VLAN_TCI: | |
529 | value->be16 = flow->vlan_tci; | |
530 | break; | |
531 | ||
441c57a9 | 532 | case MFF_DL_VLAN: |
6a885fd0 BP |
533 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
534 | break; | |
cc34bc8c BP |
535 | case MFF_VLAN_VID: |
536 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
537 | break; | |
6a885fd0 | 538 | |
441c57a9 | 539 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 540 | case MFF_VLAN_PCP: |
6a885fd0 BP |
541 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
542 | break; | |
543 | ||
b02475c5 | 544 | case MFF_MPLS_LABEL: |
8bfd0fda | 545 | value->be32 = htonl(mpls_lse_to_label(flow->mpls_lse[0])); |
b02475c5 SH |
546 | break; |
547 | ||
548 | case MFF_MPLS_TC: | |
8bfd0fda | 549 | value->u8 = mpls_lse_to_tc(flow->mpls_lse[0]); |
b02475c5 SH |
550 | break; |
551 | ||
552 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
553 | value->u8 = mpls_lse_to_bos(flow->mpls_lse[0]); |
554 | break; | |
b02475c5 | 555 | |
6a885fd0 BP |
556 | case MFF_IPV4_SRC: |
557 | value->be32 = flow->nw_src; | |
558 | break; | |
559 | ||
560 | case MFF_IPV4_DST: | |
561 | value->be32 = flow->nw_dst; | |
562 | break; | |
563 | ||
564 | case MFF_IPV6_SRC: | |
565 | value->ipv6 = flow->ipv6_src; | |
566 | break; | |
567 | ||
568 | case MFF_IPV6_DST: | |
569 | value->ipv6 = flow->ipv6_dst; | |
570 | break; | |
571 | ||
fa8223b7 JP |
572 | case MFF_IPV6_LABEL: |
573 | value->be32 = flow->ipv6_label; | |
574 | break; | |
575 | ||
6a885fd0 BP |
576 | case MFF_IP_PROTO: |
577 | value->u8 = flow->nw_proto; | |
578 | break; | |
579 | ||
530180fd | 580 | case MFF_IP_DSCP: |
eadef313 | 581 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
582 | break; |
583 | ||
1638b906 BP |
584 | case MFF_IP_DSCP_SHIFTED: |
585 | value->u8 = flow->nw_tos >> 2; | |
586 | break; | |
587 | ||
530180fd | 588 | case MFF_IP_ECN: |
eadef313 | 589 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
590 | break; |
591 | ||
a61680c6 JP |
592 | case MFF_IP_TTL: |
593 | value->u8 = flow->nw_ttl; | |
594 | break; | |
595 | ||
7257b535 | 596 | case MFF_IP_FRAG: |
eadef313 | 597 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
598 | break; |
599 | ||
600 | case MFF_ARP_OP: | |
601 | value->be16 = htons(flow->nw_proto); | |
602 | break; | |
603 | ||
604 | case MFF_ARP_SPA: | |
605 | value->be32 = flow->nw_src; | |
606 | break; | |
607 | ||
608 | case MFF_ARP_TPA: | |
609 | value->be32 = flow->nw_dst; | |
610 | break; | |
611 | ||
612 | case MFF_ARP_SHA: | |
613 | case MFF_ND_SLL: | |
614 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
615 | break; | |
616 | ||
617 | case MFF_ARP_THA: | |
618 | case MFF_ND_TLL: | |
619 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
620 | break; | |
621 | ||
622 | case MFF_TCP_SRC: | |
6a885fd0 | 623 | case MFF_UDP_SRC: |
0d56eaf2 | 624 | case MFF_SCTP_SRC: |
6a885fd0 BP |
625 | value->be16 = flow->tp_src; |
626 | break; | |
627 | ||
71baec06 | 628 | case MFF_TCP_DST: |
6a885fd0 | 629 | case MFF_UDP_DST: |
0d56eaf2 | 630 | case MFF_SCTP_DST: |
6a885fd0 BP |
631 | value->be16 = flow->tp_dst; |
632 | break; | |
633 | ||
dc235f7f JR |
634 | case MFF_TCP_FLAGS: |
635 | value->be16 = flow->tcp_flags; | |
636 | break; | |
637 | ||
268a95e0 BP |
638 | case MFF_ICMPV4_TYPE: |
639 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
640 | value->u8 = ntohs(flow->tp_src); |
641 | break; | |
642 | ||
268a95e0 BP |
643 | case MFF_ICMPV4_CODE: |
644 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
645 | value->u8 = ntohs(flow->tp_dst); |
646 | break; | |
647 | ||
648 | case MFF_ND_TARGET: | |
649 | value->ipv6 = flow->nd_target; | |
650 | break; | |
651 | ||
652 | case MFF_N_IDS: | |
653 | default: | |
428b2edd | 654 | OVS_NOT_REACHED(); |
6a885fd0 BP |
655 | } |
656 | } | |
657 | ||
81a76618 BP |
658 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
659 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
660 | * prerequisites. */ |
661 | void | |
662 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 663 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
664 | { |
665 | switch (mf->id) { | |
a79f29f2 AZ |
666 | case MFF_DP_HASH: |
667 | match_set_dp_hash(match, ntohl(value->be32)); | |
668 | break; | |
669 | case MFF_RECIRC_ID: | |
670 | match_set_recirc_id(match, ntohl(value->be32)); | |
671 | break; | |
6a885fd0 | 672 | case MFF_TUN_ID: |
81a76618 | 673 | match_set_tun_id(match, value->be64); |
6a885fd0 | 674 | break; |
4fe3445a PS |
675 | case MFF_TUN_SRC: |
676 | match_set_tun_src(match, value->be32); | |
677 | break; | |
678 | case MFF_TUN_DST: | |
679 | match_set_tun_dst(match, value->be32); | |
680 | break; | |
681 | case MFF_TUN_FLAGS: | |
682 | match_set_tun_flags(match, ntohs(value->be16)); | |
683 | break; | |
684 | case MFF_TUN_TOS: | |
685 | match_set_tun_tos(match, value->u8); | |
686 | break; | |
687 | case MFF_TUN_TTL: | |
688 | match_set_tun_ttl(match, value->u8); | |
689 | break; | |
690 | ||
969fc56c | 691 | case MFF_METADATA: |
81a76618 | 692 | match_set_metadata(match, value->be64); |
969fc56c | 693 | break; |
6a885fd0 BP |
694 | |
695 | case MFF_IN_PORT: | |
4e022ec0 | 696 | match_set_in_port(match, u16_to_ofp(ntohs(value->be16))); |
6a885fd0 BP |
697 | break; |
698 | ||
72333065 | 699 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 700 | ofp_port_t port; |
bc146369 | 701 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
702 | match_set_in_port(match, port); |
703 | break; | |
704 | } | |
c61f3870 BP |
705 | case MFF_ACTSET_OUTPUT: { |
706 | ofp_port_t port; | |
707 | ofputil_port_from_ofp11(value->be32, &port); | |
708 | match_set_actset_output(match, port); | |
709 | break; | |
710 | } | |
72333065 | 711 | |
1b567fb9 AA |
712 | case MFF_SKB_PRIORITY: |
713 | match_set_skb_priority(match, ntohl(value->be32)); | |
714 | break; | |
715 | ||
1362e248 JG |
716 | case MFF_PKT_MARK: |
717 | match_set_pkt_mark(match, ntohl(value->be32)); | |
1b567fb9 AA |
718 | break; |
719 | ||
0d7e2fe4 | 720 | CASE_MFF_REGS: |
81a76618 | 721 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 722 | break; |
6a885fd0 | 723 | |
79fe0f46 BP |
724 | CASE_MFF_XREGS: |
725 | match_set_xreg(match, mf->id - MFF_XREG0, ntohll(value->be64)); | |
726 | break; | |
727 | ||
6a885fd0 | 728 | case MFF_ETH_SRC: |
81a76618 | 729 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
730 | break; |
731 | ||
732 | case MFF_ETH_DST: | |
81a76618 | 733 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
734 | break; |
735 | ||
736 | case MFF_ETH_TYPE: | |
81a76618 | 737 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
738 | break; |
739 | ||
740 | case MFF_VLAN_TCI: | |
81a76618 | 741 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
742 | break; |
743 | ||
441c57a9 | 744 | case MFF_DL_VLAN: |
81a76618 | 745 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 746 | break; |
cc34bc8c | 747 | case MFF_VLAN_VID: |
81a76618 | 748 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 749 | break; |
6a885fd0 | 750 | |
441c57a9 | 751 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 752 | case MFF_VLAN_PCP: |
81a76618 | 753 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
754 | break; |
755 | ||
b02475c5 | 756 | case MFF_MPLS_LABEL: |
8bfd0fda | 757 | match_set_mpls_label(match, 0, value->be32); |
b02475c5 SH |
758 | break; |
759 | ||
760 | case MFF_MPLS_TC: | |
8bfd0fda | 761 | match_set_mpls_tc(match, 0, value->u8); |
b02475c5 SH |
762 | break; |
763 | ||
764 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
765 | match_set_mpls_bos(match, 0, value->u8); |
766 | break; | |
b02475c5 | 767 | |
6a885fd0 | 768 | case MFF_IPV4_SRC: |
81a76618 | 769 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
770 | break; |
771 | ||
772 | case MFF_IPV4_DST: | |
81a76618 | 773 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
774 | break; |
775 | ||
776 | case MFF_IPV6_SRC: | |
81a76618 | 777 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
778 | break; |
779 | ||
780 | case MFF_IPV6_DST: | |
81a76618 | 781 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
782 | break; |
783 | ||
fa8223b7 | 784 | case MFF_IPV6_LABEL: |
81a76618 | 785 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
786 | break; |
787 | ||
6a885fd0 | 788 | case MFF_IP_PROTO: |
81a76618 | 789 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
790 | break; |
791 | ||
530180fd | 792 | case MFF_IP_DSCP: |
81a76618 | 793 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
794 | break; |
795 | ||
1638b906 BP |
796 | case MFF_IP_DSCP_SHIFTED: |
797 | match_set_nw_dscp(match, value->u8 << 2); | |
798 | break; | |
799 | ||
530180fd | 800 | case MFF_IP_ECN: |
81a76618 | 801 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
802 | break; |
803 | ||
a61680c6 | 804 | case MFF_IP_TTL: |
81a76618 | 805 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
806 | break; |
807 | ||
7257b535 | 808 | case MFF_IP_FRAG: |
81a76618 | 809 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
810 | break; |
811 | ||
6a885fd0 | 812 | case MFF_ARP_OP: |
81a76618 | 813 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
814 | break; |
815 | ||
816 | case MFF_ARP_SPA: | |
81a76618 | 817 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
818 | break; |
819 | ||
820 | case MFF_ARP_TPA: | |
81a76618 | 821 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
822 | break; |
823 | ||
824 | case MFF_ARP_SHA: | |
825 | case MFF_ND_SLL: | |
81a76618 | 826 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
827 | break; |
828 | ||
829 | case MFF_ARP_THA: | |
830 | case MFF_ND_TLL: | |
81a76618 | 831 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
832 | break; |
833 | ||
834 | case MFF_TCP_SRC: | |
6a885fd0 | 835 | case MFF_UDP_SRC: |
0d56eaf2 | 836 | case MFF_SCTP_SRC: |
81a76618 | 837 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
838 | break; |
839 | ||
71baec06 | 840 | case MFF_TCP_DST: |
6a885fd0 | 841 | case MFF_UDP_DST: |
0d56eaf2 | 842 | case MFF_SCTP_DST: |
81a76618 | 843 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
844 | break; |
845 | ||
dc235f7f JR |
846 | case MFF_TCP_FLAGS: |
847 | match_set_tcp_flags(match, value->be16); | |
848 | break; | |
849 | ||
268a95e0 BP |
850 | case MFF_ICMPV4_TYPE: |
851 | case MFF_ICMPV6_TYPE: | |
81a76618 | 852 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
853 | break; |
854 | ||
268a95e0 BP |
855 | case MFF_ICMPV4_CODE: |
856 | case MFF_ICMPV6_CODE: | |
81a76618 | 857 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
858 | break; |
859 | ||
860 | case MFF_ND_TARGET: | |
81a76618 | 861 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
862 | break; |
863 | ||
864 | case MFF_N_IDS: | |
865 | default: | |
428b2edd | 866 | OVS_NOT_REACHED(); |
6a885fd0 BP |
867 | } |
868 | } | |
869 | ||
5a0a5702 GS |
870 | /* Unwildcard 'mask' member field described by 'mf'. The caller is |
871 | * responsible for ensuring that 'mask' meets 'mf''s prerequisites. */ | |
872 | void | |
873 | mf_mask_field(const struct mf_field *mf, struct flow *mask) | |
874 | { | |
875 | static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER; | |
876 | ||
877 | /* For MFF_DL_VLAN, we cannot send a all 1's to flow_set_dl_vlan() | |
878 | * as that will be considered as OFP10_VLAN_NONE. So consider it as a | |
879 | * special case. For the rest, calling mf_set_flow_value() is good | |
880 | * enough. */ | |
881 | if (mf->id == MFF_DL_VLAN) { | |
882 | flow_set_dl_vlan(mask, htons(VLAN_VID_MASK)); | |
883 | } else { | |
884 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
885 | } | |
886 | } | |
887 | ||
910fb1d8 JP |
888 | /* Sets 'flow' member field described by 'mf' to 'value'. The caller is |
889 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/ | |
28da1f8f BP |
890 | void |
891 | mf_set_flow_value(const struct mf_field *mf, | |
892 | const union mf_value *value, struct flow *flow) | |
893 | { | |
894 | switch (mf->id) { | |
a79f29f2 AZ |
895 | case MFF_DP_HASH: |
896 | flow->dp_hash = ntohl(value->be32); | |
897 | break; | |
898 | case MFF_RECIRC_ID: | |
899 | flow->recirc_id = ntohl(value->be32); | |
900 | break; | |
28da1f8f | 901 | case MFF_TUN_ID: |
296e07ac | 902 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 903 | break; |
4fe3445a PS |
904 | case MFF_TUN_SRC: |
905 | flow->tunnel.ip_src = value->be32; | |
906 | break; | |
907 | case MFF_TUN_DST: | |
908 | flow->tunnel.ip_dst = value->be32; | |
909 | break; | |
910 | case MFF_TUN_FLAGS: | |
911 | flow->tunnel.flags = ntohs(value->be16); | |
912 | break; | |
913 | case MFF_TUN_TOS: | |
914 | flow->tunnel.ip_tos = value->u8; | |
915 | break; | |
916 | case MFF_TUN_TTL: | |
917 | flow->tunnel.ip_ttl = value->u8; | |
918 | break; | |
919 | ||
969fc56c JS |
920 | case MFF_METADATA: |
921 | flow->metadata = value->be64; | |
922 | break; | |
28da1f8f BP |
923 | |
924 | case MFF_IN_PORT: | |
4e022ec0 | 925 | flow->in_port.ofp_port = u16_to_ofp(ntohs(value->be16)); |
28da1f8f BP |
926 | break; |
927 | ||
c61f3870 BP |
928 | case MFF_IN_PORT_OXM: |
929 | ofputil_port_from_ofp11(value->be32, &flow->in_port.ofp_port); | |
930 | break; | |
931 | case MFF_ACTSET_OUTPUT: | |
932 | ofputil_port_from_ofp11(value->be32, &flow->actset_output); | |
72333065 | 933 | break; |
72333065 | 934 | |
1b567fb9 AA |
935 | case MFF_SKB_PRIORITY: |
936 | flow->skb_priority = ntohl(value->be32); | |
937 | break; | |
938 | ||
1362e248 JG |
939 | case MFF_PKT_MARK: |
940 | flow->pkt_mark = ntohl(value->be32); | |
1b567fb9 AA |
941 | break; |
942 | ||
0d7e2fe4 | 943 | CASE_MFF_REGS: |
28da1f8f BP |
944 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
945 | break; | |
28da1f8f | 946 | |
79fe0f46 BP |
947 | CASE_MFF_XREGS: |
948 | flow_set_xreg(flow, mf->id - MFF_XREG0, ntohll(value->be64)); | |
949 | break; | |
950 | ||
28da1f8f BP |
951 | case MFF_ETH_SRC: |
952 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
953 | break; | |
954 | ||
955 | case MFF_ETH_DST: | |
b5a36e38 | 956 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
957 | break; |
958 | ||
959 | case MFF_ETH_TYPE: | |
960 | flow->dl_type = value->be16; | |
961 | break; | |
962 | ||
963 | case MFF_VLAN_TCI: | |
964 | flow->vlan_tci = value->be16; | |
965 | break; | |
966 | ||
441c57a9 | 967 | case MFF_DL_VLAN: |
fb0451d9 | 968 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 969 | break; |
cc34bc8c BP |
970 | case MFF_VLAN_VID: |
971 | flow_set_vlan_vid(flow, value->be16); | |
972 | break; | |
28da1f8f | 973 | |
441c57a9 | 974 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 975 | case MFF_VLAN_PCP: |
28da1f8f BP |
976 | flow_set_vlan_pcp(flow, value->u8); |
977 | break; | |
978 | ||
b02475c5 | 979 | case MFF_MPLS_LABEL: |
8bfd0fda | 980 | flow_set_mpls_label(flow, 0, value->be32); |
b02475c5 SH |
981 | break; |
982 | ||
983 | case MFF_MPLS_TC: | |
8bfd0fda | 984 | flow_set_mpls_tc(flow, 0, value->u8); |
b02475c5 SH |
985 | break; |
986 | ||
987 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
988 | flow_set_mpls_bos(flow, 0, value->u8); |
989 | break; | |
b02475c5 | 990 | |
28da1f8f BP |
991 | case MFF_IPV4_SRC: |
992 | flow->nw_src = value->be32; | |
993 | break; | |
994 | ||
995 | case MFF_IPV4_DST: | |
996 | flow->nw_dst = value->be32; | |
997 | break; | |
998 | ||
999 | case MFF_IPV6_SRC: | |
1000 | flow->ipv6_src = value->ipv6; | |
1001 | break; | |
1002 | ||
1003 | case MFF_IPV6_DST: | |
1004 | flow->ipv6_dst = value->ipv6; | |
1005 | break; | |
1006 | ||
1007 | case MFF_IPV6_LABEL: | |
1008 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1009 | break; | |
1010 | ||
1011 | case MFF_IP_PROTO: | |
1012 | flow->nw_proto = value->u8; | |
1013 | break; | |
1014 | ||
1015 | case MFF_IP_DSCP: | |
1016 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1017 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1018 | break; | |
1019 | ||
1638b906 BP |
1020 | case MFF_IP_DSCP_SHIFTED: |
1021 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1022 | flow->nw_tos |= value->u8 << 2; | |
1023 | break; | |
1024 | ||
28da1f8f BP |
1025 | case MFF_IP_ECN: |
1026 | flow->nw_tos &= ~IP_ECN_MASK; | |
1027 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1028 | break; | |
1029 | ||
1030 | case MFF_IP_TTL: | |
1031 | flow->nw_ttl = value->u8; | |
1032 | break; | |
1033 | ||
1034 | case MFF_IP_FRAG: | |
c8abb8af | 1035 | flow->nw_frag = value->u8 & FLOW_NW_FRAG_MASK; |
28da1f8f BP |
1036 | break; |
1037 | ||
1038 | case MFF_ARP_OP: | |
1039 | flow->nw_proto = ntohs(value->be16); | |
1040 | break; | |
1041 | ||
1042 | case MFF_ARP_SPA: | |
1043 | flow->nw_src = value->be32; | |
1044 | break; | |
1045 | ||
1046 | case MFF_ARP_TPA: | |
1047 | flow->nw_dst = value->be32; | |
1048 | break; | |
1049 | ||
1050 | case MFF_ARP_SHA: | |
1051 | case MFF_ND_SLL: | |
1052 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1053 | break; | |
1054 | ||
1055 | case MFF_ARP_THA: | |
1056 | case MFF_ND_TLL: | |
1057 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1058 | break; | |
1059 | ||
1060 | case MFF_TCP_SRC: | |
1061 | case MFF_UDP_SRC: | |
0d56eaf2 | 1062 | case MFF_SCTP_SRC: |
28da1f8f BP |
1063 | flow->tp_src = value->be16; |
1064 | break; | |
1065 | ||
1066 | case MFF_TCP_DST: | |
1067 | case MFF_UDP_DST: | |
0d56eaf2 | 1068 | case MFF_SCTP_DST: |
28da1f8f BP |
1069 | flow->tp_dst = value->be16; |
1070 | break; | |
1071 | ||
dc235f7f JR |
1072 | case MFF_TCP_FLAGS: |
1073 | flow->tcp_flags = value->be16; | |
1074 | break; | |
1075 | ||
28da1f8f BP |
1076 | case MFF_ICMPV4_TYPE: |
1077 | case MFF_ICMPV6_TYPE: | |
1078 | flow->tp_src = htons(value->u8); | |
1079 | break; | |
1080 | ||
1081 | case MFF_ICMPV4_CODE: | |
1082 | case MFF_ICMPV6_CODE: | |
1083 | flow->tp_dst = htons(value->u8); | |
1084 | break; | |
1085 | ||
1086 | case MFF_ND_TARGET: | |
1087 | flow->nd_target = value->ipv6; | |
1088 | break; | |
1089 | ||
1090 | case MFF_N_IDS: | |
1091 | default: | |
428b2edd | 1092 | OVS_NOT_REACHED(); |
28da1f8f BP |
1093 | } |
1094 | } | |
1095 | ||
7eb4b1f1 BP |
1096 | /* Consider each of 'src', 'mask', and 'dst' as if they were arrays of 8*n |
1097 | * bits. Then, for each 0 <= i < 8 * n such that mask[i] == 1, sets dst[i] = | |
1098 | * src[i]. */ | |
1099 | static void | |
1100 | apply_mask(const uint8_t *src, const uint8_t *mask, uint8_t *dst, size_t n) | |
1101 | { | |
1102 | size_t i; | |
1103 | ||
1104 | for (i = 0; i < n; i++) { | |
1105 | dst[i] = (src[i] & mask[i]) | (dst[i] & ~mask[i]); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* Sets 'flow' member field described by 'field' to 'value', except that bits | |
1110 | * for which 'mask' has a 0-bit keep their existing values. The caller is | |
1111 | * responsible for ensuring that 'flow' meets 'field''s prerequisites.*/ | |
1112 | void | |
1113 | mf_set_flow_value_masked(const struct mf_field *field, | |
1114 | const union mf_value *value, | |
1115 | const union mf_value *mask, | |
1116 | struct flow *flow) | |
1117 | { | |
1118 | union mf_value tmp; | |
1119 | ||
1120 | mf_get_value(field, flow, &tmp); | |
1121 | apply_mask((const uint8_t *) value, (const uint8_t *) mask, | |
1122 | (uint8_t *) &tmp, field->n_bytes); | |
1123 | mf_set_flow_value(field, &tmp, flow); | |
1124 | } | |
1125 | ||
ccbe50f8 BP |
1126 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1127 | * | |
1128 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1129 | * prerequisites. */ | |
1130 | bool | |
1131 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1132 | { | |
1133 | union mf_value value; | |
1134 | ||
1135 | mf_get_value(mf, flow, &value); | |
53cb9c3e | 1136 | return is_all_zeros(&value, mf->n_bytes); |
ccbe50f8 BP |
1137 | } |
1138 | ||
81a76618 | 1139 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1140 | * |
81a76618 | 1141 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1142 | * prerequisites. */ |
1143 | void | |
81a76618 | 1144 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1145 | { |
1146 | switch (mf->id) { | |
a79f29f2 AZ |
1147 | case MFF_DP_HASH: |
1148 | match->flow.dp_hash = 0; | |
1149 | match->wc.masks.dp_hash = 0; | |
1150 | break; | |
1151 | case MFF_RECIRC_ID: | |
1152 | match->flow.recirc_id = 0; | |
1153 | match->wc.masks.recirc_id = 0; | |
1154 | break; | |
6a885fd0 | 1155 | case MFF_TUN_ID: |
81a76618 | 1156 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1157 | break; |
4fe3445a PS |
1158 | case MFF_TUN_SRC: |
1159 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1160 | break; | |
1161 | case MFF_TUN_DST: | |
1162 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1163 | break; | |
1164 | case MFF_TUN_FLAGS: | |
1165 | match_set_tun_flags_masked(match, 0, 0); | |
1166 | break; | |
1167 | case MFF_TUN_TOS: | |
1168 | match_set_tun_tos_masked(match, 0, 0); | |
1169 | break; | |
1170 | case MFF_TUN_TTL: | |
1171 | match_set_tun_ttl_masked(match, 0, 0); | |
1172 | break; | |
1173 | ||
969fc56c | 1174 | case MFF_METADATA: |
81a76618 | 1175 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
801d2b2a | 1176 | break; |
6a885fd0 BP |
1177 | |
1178 | case MFF_IN_PORT: | |
72333065 | 1179 | case MFF_IN_PORT_OXM: |
4e022ec0 AW |
1180 | match->flow.in_port.ofp_port = 0; |
1181 | match->wc.masks.in_port.ofp_port = 0; | |
6a885fd0 | 1182 | break; |
c61f3870 BP |
1183 | case MFF_ACTSET_OUTPUT: |
1184 | match->flow.actset_output = 0; | |
1185 | match->wc.masks.actset_output = 0; | |
1186 | break; | |
6a885fd0 | 1187 | |
1b567fb9 AA |
1188 | case MFF_SKB_PRIORITY: |
1189 | match->flow.skb_priority = 0; | |
1190 | match->wc.masks.skb_priority = 0; | |
1191 | break; | |
1192 | ||
1362e248 JG |
1193 | case MFF_PKT_MARK: |
1194 | match->flow.pkt_mark = 0; | |
1195 | match->wc.masks.pkt_mark = 0; | |
1b567fb9 AA |
1196 | break; |
1197 | ||
0d7e2fe4 | 1198 | CASE_MFF_REGS: |
81a76618 | 1199 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1200 | break; |
6a885fd0 | 1201 | |
79fe0f46 BP |
1202 | CASE_MFF_XREGS: |
1203 | match_set_xreg_masked(match, mf->id - MFF_XREG0, 0, 0); | |
1204 | break; | |
1205 | ||
6a885fd0 | 1206 | case MFF_ETH_SRC: |
81a76618 BP |
1207 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1208 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1209 | break; |
1210 | ||
1211 | case MFF_ETH_DST: | |
81a76618 BP |
1212 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1213 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1214 | break; |
1215 | ||
1216 | case MFF_ETH_TYPE: | |
81a76618 BP |
1217 | match->flow.dl_type = htons(0); |
1218 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1219 | break; |
1220 | ||
1221 | case MFF_VLAN_TCI: | |
81a76618 | 1222 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1223 | break; |
1224 | ||
441c57a9 | 1225 | case MFF_DL_VLAN: |
cc34bc8c | 1226 | case MFF_VLAN_VID: |
81a76618 | 1227 | match_set_any_vid(match); |
6a885fd0 BP |
1228 | break; |
1229 | ||
441c57a9 | 1230 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1231 | case MFF_VLAN_PCP: |
81a76618 | 1232 | match_set_any_pcp(match); |
6a885fd0 BP |
1233 | break; |
1234 | ||
b02475c5 | 1235 | case MFF_MPLS_LABEL: |
8bfd0fda | 1236 | match_set_any_mpls_label(match, 0); |
b02475c5 SH |
1237 | break; |
1238 | ||
1239 | case MFF_MPLS_TC: | |
8bfd0fda | 1240 | match_set_any_mpls_tc(match, 0); |
b02475c5 SH |
1241 | break; |
1242 | ||
1243 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1244 | match_set_any_mpls_bos(match, 0); |
1245 | break; | |
b02475c5 | 1246 | |
6a885fd0 BP |
1247 | case MFF_IPV4_SRC: |
1248 | case MFF_ARP_SPA: | |
81a76618 | 1249 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1250 | break; |
1251 | ||
1252 | case MFF_IPV4_DST: | |
1253 | case MFF_ARP_TPA: | |
81a76618 | 1254 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1255 | break; |
1256 | ||
1257 | case MFF_IPV6_SRC: | |
81a76618 BP |
1258 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1259 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1260 | break; |
1261 | ||
1262 | case MFF_IPV6_DST: | |
81a76618 BP |
1263 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1264 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1265 | break; |
1266 | ||
fa8223b7 | 1267 | case MFF_IPV6_LABEL: |
81a76618 BP |
1268 | match->wc.masks.ipv6_label = htonl(0); |
1269 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1270 | break; |
1271 | ||
6a885fd0 | 1272 | case MFF_IP_PROTO: |
81a76618 BP |
1273 | match->wc.masks.nw_proto = 0; |
1274 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1275 | break; |
1276 | ||
530180fd | 1277 | case MFF_IP_DSCP: |
1638b906 | 1278 | case MFF_IP_DSCP_SHIFTED: |
81a76618 BP |
1279 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1280 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1281 | break; |
1282 | ||
530180fd | 1283 | case MFF_IP_ECN: |
81a76618 BP |
1284 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1285 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1286 | break; |
1287 | ||
a61680c6 | 1288 | case MFF_IP_TTL: |
81a76618 BP |
1289 | match->wc.masks.nw_ttl = 0; |
1290 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1291 | break; |
1292 | ||
7257b535 | 1293 | case MFF_IP_FRAG: |
81a76618 BP |
1294 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1295 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1296 | break; |
1297 | ||
1298 | case MFF_ARP_OP: | |
81a76618 BP |
1299 | match->wc.masks.nw_proto = 0; |
1300 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1301 | break; |
1302 | ||
1303 | case MFF_ARP_SHA: | |
1304 | case MFF_ND_SLL: | |
81a76618 BP |
1305 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1306 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1307 | break; |
1308 | ||
1309 | case MFF_ARP_THA: | |
1310 | case MFF_ND_TLL: | |
81a76618 BP |
1311 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1312 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1313 | break; |
1314 | ||
1315 | case MFF_TCP_SRC: | |
1316 | case MFF_UDP_SRC: | |
0d56eaf2 | 1317 | case MFF_SCTP_SRC: |
268a95e0 BP |
1318 | case MFF_ICMPV4_TYPE: |
1319 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1320 | match->wc.masks.tp_src = htons(0); |
1321 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1322 | break; |
1323 | ||
1324 | case MFF_TCP_DST: | |
1325 | case MFF_UDP_DST: | |
0d56eaf2 | 1326 | case MFF_SCTP_DST: |
268a95e0 BP |
1327 | case MFF_ICMPV4_CODE: |
1328 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1329 | match->wc.masks.tp_dst = htons(0); |
1330 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1331 | break; |
1332 | ||
dc235f7f JR |
1333 | case MFF_TCP_FLAGS: |
1334 | match->wc.masks.tcp_flags = htons(0); | |
1335 | match->flow.tcp_flags = htons(0); | |
1336 | break; | |
1337 | ||
6a885fd0 | 1338 | case MFF_ND_TARGET: |
81a76618 BP |
1339 | memset(&match->wc.masks.nd_target, 0, |
1340 | sizeof match->wc.masks.nd_target); | |
1341 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1342 | break; |
1343 | ||
1344 | case MFF_N_IDS: | |
1345 | default: | |
428b2edd | 1346 | OVS_NOT_REACHED(); |
6a885fd0 BP |
1347 | } |
1348 | } | |
1349 | ||
81a76618 | 1350 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1351 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1352 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1353 | * 0-bit indicating a don't-care. | |
1354 | * | |
1355 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1356 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1357 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1358 | * |
1359 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1360 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
db0b6c29 | 1361 | enum ofputil_protocol |
6a885fd0 BP |
1362 | mf_set(const struct mf_field *mf, |
1363 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1364 | struct match *match) |
6a885fd0 | 1365 | { |
53cb9c3e | 1366 | if (!mask || is_all_ones(mask, mf->n_bytes)) { |
81a76618 | 1367 | mf_set_value(mf, value, match); |
a4ce8b25 | 1368 | return mf->usable_protocols_exact; |
53cb9c3e | 1369 | } else if (is_all_zeros(mask, mf->n_bytes)) { |
81a76618 | 1370 | mf_set_wild(mf, match); |
db0b6c29 | 1371 | return OFPUTIL_P_ANY; |
6a885fd0 BP |
1372 | } |
1373 | ||
1374 | switch (mf->id) { | |
a79f29f2 | 1375 | case MFF_RECIRC_ID: |
6a885fd0 | 1376 | case MFF_IN_PORT: |
72333065 | 1377 | case MFF_IN_PORT_OXM: |
c61f3870 | 1378 | case MFF_ACTSET_OUTPUT: |
1b567fb9 | 1379 | case MFF_SKB_PRIORITY: |
6a885fd0 | 1380 | case MFF_ETH_TYPE: |
441c57a9 BP |
1381 | case MFF_DL_VLAN: |
1382 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1383 | case MFF_VLAN_PCP: |
b02475c5 SH |
1384 | case MFF_MPLS_LABEL: |
1385 | case MFF_MPLS_TC: | |
1386 | case MFF_MPLS_BOS: | |
6a885fd0 | 1387 | case MFF_IP_PROTO: |
a61680c6 | 1388 | case MFF_IP_TTL: |
530180fd | 1389 | case MFF_IP_DSCP: |
1638b906 | 1390 | case MFF_IP_DSCP_SHIFTED: |
530180fd | 1391 | case MFF_IP_ECN: |
6a885fd0 | 1392 | case MFF_ARP_OP: |
268a95e0 BP |
1393 | case MFF_ICMPV4_TYPE: |
1394 | case MFF_ICMPV4_CODE: | |
1395 | case MFF_ICMPV6_TYPE: | |
1396 | case MFF_ICMPV6_CODE: | |
af69bf19 | 1397 | return OFPUTIL_P_NONE; |
6a885fd0 | 1398 | |
a79f29f2 AZ |
1399 | case MFF_DP_HASH: |
1400 | match_set_dp_hash_masked(match, ntohl(value->be32), ntohl(mask->be32)); | |
1401 | break; | |
6a885fd0 | 1402 | case MFF_TUN_ID: |
81a76618 | 1403 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1404 | break; |
4fe3445a PS |
1405 | case MFF_TUN_SRC: |
1406 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1407 | break; | |
1408 | case MFF_TUN_DST: | |
1409 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1410 | break; | |
1411 | case MFF_TUN_FLAGS: | |
1412 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1413 | break; | |
1414 | case MFF_TUN_TTL: | |
1415 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1416 | break; | |
1417 | case MFF_TUN_TOS: | |
1418 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1419 | break; | |
1420 | ||
969fc56c | 1421 | case MFF_METADATA: |
81a76618 | 1422 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1423 | break; |
6a885fd0 | 1424 | |
0d7e2fe4 | 1425 | CASE_MFF_REGS: |
81a76618 BP |
1426 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1427 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 | 1428 | break; |
ac923e91 | 1429 | |
79fe0f46 BP |
1430 | CASE_MFF_XREGS: |
1431 | match_set_xreg_masked(match, mf->id - MFF_XREG0, | |
1432 | ntohll(value->be64), ntohll(mask->be64)); | |
1433 | break; | |
1434 | ||
ac923e91 JG |
1435 | case MFF_PKT_MARK: |
1436 | match_set_pkt_mark_masked(match, ntohl(value->be32), | |
1437 | ntohl(mask->be32)); | |
1438 | break; | |
6a885fd0 BP |
1439 | |
1440 | case MFF_ETH_DST: | |
81a76618 | 1441 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1442 | break; |
1443 | ||
1444 | case MFF_ETH_SRC: | |
81a76618 | 1445 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1446 | break; |
1447 | ||
e878338b SH |
1448 | case MFF_ARP_SHA: |
1449 | case MFF_ND_SLL: | |
81a76618 | 1450 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1451 | break; |
1452 | ||
1453 | case MFF_ARP_THA: | |
1454 | case MFF_ND_TLL: | |
81a76618 | 1455 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1456 | break; |
1457 | ||
6a885fd0 | 1458 | case MFF_VLAN_TCI: |
81a76618 | 1459 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1460 | break; |
1461 | ||
cc34bc8c | 1462 | case MFF_VLAN_VID: |
81a76618 | 1463 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1464 | break; |
1465 | ||
6a885fd0 | 1466 | case MFF_IPV4_SRC: |
81a76618 | 1467 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1468 | break; |
6a885fd0 BP |
1469 | |
1470 | case MFF_IPV4_DST: | |
81a76618 | 1471 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1472 | break; |
6a885fd0 BP |
1473 | |
1474 | case MFF_IPV6_SRC: | |
81a76618 | 1475 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1476 | break; |
1477 | ||
1478 | case MFF_IPV6_DST: | |
81a76618 | 1479 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1480 | break; |
1481 | ||
32455024 SH |
1482 | case MFF_IPV6_LABEL: |
1483 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1484 | mf_set_value(mf, value, match); |
32455024 | 1485 | } else { |
81a76618 | 1486 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1487 | } |
1488 | break; | |
1489 | ||
47284b1f | 1490 | case MFF_ND_TARGET: |
81a76618 | 1491 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1492 | break; |
1493 | ||
7257b535 | 1494 | case MFF_IP_FRAG: |
81a76618 | 1495 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1496 | break; |
1497 | ||
6a885fd0 | 1498 | case MFF_ARP_SPA: |
81a76618 | 1499 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1500 | break; |
6a885fd0 BP |
1501 | |
1502 | case MFF_ARP_TPA: | |
81a76618 | 1503 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1504 | break; |
6a885fd0 | 1505 | |
73f33563 BP |
1506 | case MFF_TCP_SRC: |
1507 | case MFF_UDP_SRC: | |
0d56eaf2 | 1508 | case MFF_SCTP_SRC: |
81a76618 | 1509 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1510 | break; |
1511 | ||
1512 | case MFF_TCP_DST: | |
1513 | case MFF_UDP_DST: | |
0d56eaf2 | 1514 | case MFF_SCTP_DST: |
81a76618 | 1515 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1516 | break; |
1517 | ||
dc235f7f JR |
1518 | case MFF_TCP_FLAGS: |
1519 | match_set_tcp_flags_masked(match, value->be16, mask->be16); | |
1520 | break; | |
1521 | ||
6a885fd0 BP |
1522 | case MFF_N_IDS: |
1523 | default: | |
428b2edd | 1524 | OVS_NOT_REACHED(); |
6a885fd0 | 1525 | } |
db0b6c29 | 1526 | |
a4ce8b25 BP |
1527 | return ((mf->usable_protocols_bitwise == mf->usable_protocols_cidr |
1528 | || ip_is_cidr(mask->be32)) | |
1529 | ? mf->usable_protocols_cidr | |
1530 | : mf->usable_protocols_bitwise); | |
6a885fd0 BP |
1531 | } |
1532 | ||
816fd533 BP |
1533 | static enum ofperr |
1534 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1535 | const char *type) | |
6a885fd0 | 1536 | { |
816fd533 BP |
1537 | if (!sf->field) { |
1538 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
9e404d1e | 1539 | return OFPERR_OFPBAC_BAD_SET_TYPE; |
816fd533 BP |
1540 | } else if (!sf->n_bits) { |
1541 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
9e404d1e | 1542 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1543 | } else if (sf->ofs >= sf->field->n_bits) { |
1544 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1545 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1546 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1547 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { |
1548 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1549 | "of %s field %s", sf->ofs, sf->n_bits, | |
1550 | sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1551 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1552 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { |
1553 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1554 | type, sf->field->name); | |
9e404d1e | 1555 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
6a885fd0 | 1556 | } else { |
816fd533 BP |
1557 | return 0; |
1558 | } | |
816fd533 | 1559 | } |
6a885fd0 | 1560 | |
816fd533 BP |
1561 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1562 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1563 | * ofp_mkerr()). */ | |
1564 | enum ofperr | |
1565 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1566 | { | |
1567 | return mf_check__(sf, flow, "source"); | |
1568 | } | |
6a885fd0 | 1569 | |
816fd533 BP |
1570 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1571 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1572 | * ofp_mkerr()). */ | |
1573 | enum ofperr | |
1574 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1575 | { | |
1576 | int error = mf_check__(sf, flow, "destination"); | |
1577 | if (!error && !sf->field->writable) { | |
1578 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1579 | sf->field->name); | |
9e404d1e | 1580 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
6a885fd0 | 1581 | } |
816fd533 | 1582 | return error; |
6a885fd0 BP |
1583 | } |
1584 | ||
81a76618 | 1585 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1586 | * 'value' and 'mask', respectively. */ |
1587 | void | |
81a76618 | 1588 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1589 | union mf_value *value, union mf_value *mask) |
1590 | { | |
81a76618 BP |
1591 | mf_get_value(mf, &match->flow, value); |
1592 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1593 | } |
1594 | ||
6a885fd0 BP |
1595 | static char * |
1596 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1597 | uint8_t *valuep, uint8_t *maskp) | |
1598 | { | |
1599 | unsigned long long int integer, mask; | |
1600 | char *tail; | |
1601 | int i; | |
1602 | ||
1603 | errno = 0; | |
1604 | integer = strtoull(s, &tail, 0); | |
1605 | if (errno || (*tail != '\0' && *tail != '/')) { | |
1606 | goto syntax_error; | |
1607 | } | |
1608 | ||
1609 | if (*tail == '/') { | |
1610 | mask = strtoull(tail + 1, &tail, 0); | |
1611 | if (errno || *tail != '\0') { | |
1612 | goto syntax_error; | |
1613 | } | |
1614 | } else { | |
1615 | mask = ULLONG_MAX; | |
1616 | } | |
1617 | ||
1618 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
1619 | valuep[i] = integer; | |
1620 | maskp[i] = mask; | |
1621 | integer >>= 8; | |
1622 | mask >>= 8; | |
1623 | } | |
1624 | if (integer) { | |
1625 | return xasprintf("%s: value too large for %u-byte field %s", | |
1626 | s, mf->n_bytes, mf->name); | |
1627 | } | |
1628 | return NULL; | |
1629 | ||
1630 | syntax_error: | |
1631 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
1632 | } | |
1633 | ||
1634 | static char * | |
1635 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1636 | uint8_t mac[ETH_ADDR_LEN], | |
1637 | uint8_t mask[ETH_ADDR_LEN]) | |
1638 | { | |
279fb135 | 1639 | int n; |
6a885fd0 | 1640 | |
279fb135 | 1641 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 | 1642 | |
279fb135 | 1643 | n = -1; |
c2c28dfd | 1644 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n) |
279fb135 | 1645 | && n == strlen(s)) { |
6a885fd0 BP |
1646 | memset(mask, 0xff, ETH_ADDR_LEN); |
1647 | return NULL; | |
279fb135 | 1648 | } |
6a885fd0 | 1649 | |
279fb135 | 1650 | n = -1; |
c2c28dfd BP |
1651 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n", |
1652 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n) | |
279fb135 BP |
1653 | && n == strlen(s)) { |
1654 | return NULL; | |
6a885fd0 | 1655 | } |
279fb135 BP |
1656 | |
1657 | return xasprintf("%s: invalid Ethernet address", s); | |
6a885fd0 BP |
1658 | } |
1659 | ||
1660 | static char * | |
1661 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1662 | ovs_be32 *ip, ovs_be32 *mask) | |
1663 | { | |
1664 | int prefix; | |
1665 | ||
cb22974d | 1666 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 | 1667 | |
c2c28dfd BP |
1668 | if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT, |
1669 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) { | |
6a885fd0 | 1670 | /* OK. */ |
c2c28dfd | 1671 | } else if (ovs_scan(s, IP_SCAN_FMT"/%d", IP_SCAN_ARGS(ip), &prefix)) { |
6a885fd0 | 1672 | if (prefix <= 0 || prefix > 32) { |
86f35fb5 | 1673 | return xasprintf("%s: network prefix bits not between 0 and " |
6a885fd0 | 1674 | "32", s); |
6a885fd0 | 1675 | } |
86f35fb5 | 1676 | *mask = be32_prefix_mask(prefix); |
c2c28dfd | 1677 | } else if (ovs_scan(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) { |
b8266395 | 1678 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
1679 | } else { |
1680 | return xasprintf("%s: invalid IP address", s); | |
1681 | } | |
1682 | return NULL; | |
1683 | } | |
1684 | ||
1685 | static char * | |
1686 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1687 | struct in6_addr *value, struct in6_addr *mask) | |
1688 | { | |
1689 | char *str = xstrdup(s); | |
1690 | char *save_ptr = NULL; | |
1691 | const char *name, *netmask; | |
1692 | int retval; | |
1693 | ||
cb22974d | 1694 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
1695 | |
1696 | name = strtok_r(str, "/", &save_ptr); | |
1697 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1698 | if (retval) { | |
1699 | char *err; | |
1700 | ||
1701 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1702 | free(str); | |
1703 | ||
1704 | return err; | |
1705 | } | |
1706 | ||
1707 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1708 | if (netmask) { | |
ff0b06ee BP |
1709 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
1710 | int prefix = atoi(netmask); | |
1711 | if (prefix <= 0 || prefix > 128) { | |
1712 | free(str); | |
1713 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
1714 | } else { | |
1715 | *mask = ipv6_create_mask(prefix); | |
1716 | } | |
6a885fd0 BP |
1717 | } |
1718 | } else { | |
1719 | *mask = in6addr_exact; | |
1720 | } | |
1721 | free(str); | |
1722 | ||
1723 | return NULL; | |
1724 | } | |
1725 | ||
1726 | static char * | |
1727 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
1728 | ovs_be16 *valuep, ovs_be16 *maskp) | |
1729 | { | |
4e022ec0 | 1730 | ofp_port_t port; |
6a885fd0 | 1731 | |
cb22974d | 1732 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
33ab38d9 JR |
1733 | |
1734 | if (ofputil_port_from_string(s, &port)) { | |
4e022ec0 | 1735 | *valuep = htons(ofp_to_u16(port)); |
b8266395 | 1736 | *maskp = OVS_BE16_MAX; |
6a885fd0 | 1737 | return NULL; |
6a885fd0 | 1738 | } |
33ab38d9 | 1739 | return xasprintf("%s: port value out of range for %s", s, mf->name); |
6a885fd0 BP |
1740 | } |
1741 | ||
72333065 JR |
1742 | static char * |
1743 | mf_from_ofp_port_string32(const struct mf_field *mf, const char *s, | |
1744 | ovs_be32 *valuep, ovs_be32 *maskp) | |
1745 | { | |
4e022ec0 | 1746 | ofp_port_t port; |
72333065 JR |
1747 | |
1748 | ovs_assert(mf->n_bytes == sizeof(ovs_be32)); | |
1749 | if (ofputil_port_from_string(s, &port)) { | |
1750 | *valuep = ofputil_port_to_ofp11(port); | |
b8266395 | 1751 | *maskp = OVS_BE32_MAX; |
72333065 JR |
1752 | return NULL; |
1753 | } | |
1754 | return xasprintf("%s: port value out of range for %s", s, mf->name); | |
1755 | } | |
1756 | ||
7257b535 BP |
1757 | struct frag_handling { |
1758 | const char *name; | |
1759 | uint8_t mask; | |
1760 | uint8_t value; | |
1761 | }; | |
1762 | ||
1763 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
1764 | #define A FLOW_NW_FRAG_ANY |
1765 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
1766 | /* name mask value */ |
1767 | ||
1768 | { "no", A|L, 0 }, | |
1769 | { "first", A|L, A }, | |
1770 | { "later", A|L, A|L }, | |
1771 | ||
1772 | { "no", A, 0 }, | |
1773 | { "yes", A, A }, | |
1774 | ||
1775 | { "not_later", L, 0 }, | |
1776 | { "later", L, L }, | |
1777 | #undef A | |
1778 | #undef L | |
1779 | }; | |
1780 | ||
1781 | static char * | |
1782 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
1783 | { | |
1784 | const struct frag_handling *h; | |
1785 | ||
1786 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
1787 | if (!strcasecmp(s, h->name)) { | |
1788 | /* We force the upper bits of the mask on to make mf_parse_value() | |
1789 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 1790 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
1791 | *valuep = h->value; |
1792 | return NULL; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
1797 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
1798 | } | |
1799 | ||
4fe3445a PS |
1800 | static int |
1801 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
1802 | ovs_be16 *res) | |
1803 | { | |
1804 | uint32_t result = 0; | |
1805 | char *save_ptr = NULL; | |
1806 | char *name; | |
1807 | int rc = 0; | |
1808 | char *s = xstrdup(s_); | |
1809 | ||
1810 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
1811 | name = strtok_r(NULL, " |", &save_ptr)) { | |
1812 | int name_len; | |
1813 | unsigned long long int flags; | |
1814 | uint32_t bit; | |
4fe3445a | 1815 | |
c2c28dfd | 1816 | if (ovs_scan(name, "%lli", &flags)) { |
4fe3445a PS |
1817 | result |= flags; |
1818 | continue; | |
1819 | } | |
1820 | name_len = strlen(name); | |
1821 | for (bit = 1; bit; bit <<= 1) { | |
1822 | const char *fname = bit_to_string(bit); | |
1823 | size_t len; | |
1824 | ||
1825 | if (!fname) { | |
1826 | continue; | |
1827 | } | |
1828 | ||
1829 | len = strlen(fname); | |
1830 | if (len != name_len) { | |
1831 | continue; | |
1832 | } | |
1833 | if (!strncmp(name, fname, len)) { | |
1834 | result |= bit; | |
1835 | break; | |
1836 | } | |
1837 | } | |
1838 | ||
1839 | if (!bit) { | |
1840 | rc = -ENOENT; | |
1841 | goto out; | |
1842 | } | |
1843 | } | |
1844 | ||
1845 | *res = htons(result); | |
1846 | out: | |
1847 | free(s); | |
1848 | return rc; | |
1849 | } | |
1850 | ||
1851 | static char * | |
b0aa8146 | 1852 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
1853 | { |
1854 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b8266395 | 1855 | *maskp = OVS_BE16_MAX; |
4fe3445a PS |
1856 | return NULL; |
1857 | } | |
1858 | ||
1859 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
c49a5e33 | 1860 | "\"csum\", \"key\")", s); |
4fe3445a PS |
1861 | } |
1862 | ||
61bf6666 JR |
1863 | static char * |
1864 | mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp) | |
1865 | { | |
1866 | uint16_t flags = 0; | |
1867 | uint16_t mask = 0; | |
1868 | uint16_t bit; | |
1869 | int n; | |
1870 | ||
1871 | if (ovs_scan(s, "%"SCNi16"/%"SCNi16"%n", &flags, &mask, &n) && !s[n]) { | |
1872 | *flagsp = htons(flags); | |
1873 | *maskp = htons(mask); | |
1874 | return NULL; | |
1875 | } | |
1876 | if (ovs_scan(s, "%"SCNi16"%n", &flags, &n) && !s[n]) { | |
1877 | *flagsp = htons(flags); | |
1878 | *maskp = OVS_BE16_MAX; | |
1879 | return NULL; | |
1880 | } | |
1881 | ||
1882 | while (*s != '\0') { | |
1883 | bool set; | |
1884 | int name_len; | |
1885 | ||
1886 | switch (*s) { | |
1887 | case '+': | |
1888 | set = true; | |
1889 | break; | |
1890 | case '-': | |
1891 | set = false; | |
1892 | break; | |
1893 | default: | |
1894 | return xasprintf("%s: TCP flag must be preceded by '+' (for SET) " | |
1895 | "or '-' (NOT SET)", s); | |
1896 | } | |
1897 | s++; | |
1898 | ||
1899 | name_len = strcspn(s,"+-"); | |
1900 | ||
1901 | for (bit = 1; bit; bit <<= 1) { | |
1902 | const char *fname = packet_tcp_flag_to_string(bit); | |
1903 | size_t len; | |
1904 | ||
1905 | if (!fname) { | |
1906 | continue; | |
1907 | } | |
1908 | ||
1909 | len = strlen(fname); | |
1910 | if (len != name_len) { | |
1911 | continue; | |
1912 | } | |
1913 | if (!strncmp(s, fname, len)) { | |
1914 | if (mask & bit) { | |
1915 | return xasprintf("%s: Each TCP flag can be specified only " | |
1916 | "once", s); | |
1917 | } | |
1918 | if (set) { | |
1919 | flags |= bit; | |
1920 | } | |
1921 | mask |= bit; | |
1922 | break; | |
1923 | } | |
1924 | } | |
1925 | ||
1926 | if (!bit) { | |
1927 | return xasprintf("%s: unknown TCP flag(s)", s); | |
1928 | } | |
1929 | s += name_len; | |
1930 | } | |
1931 | ||
1932 | *flagsp = htons(flags); | |
1933 | *maskp = htons(mask); | |
1934 | return NULL; | |
1935 | } | |
1936 | ||
1937 | ||
6a885fd0 BP |
1938 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
1939 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
1940 | char * | |
1941 | mf_parse(const struct mf_field *mf, const char *s, | |
1942 | union mf_value *value, union mf_value *mask) | |
1943 | { | |
3634dff8 BP |
1944 | char *error; |
1945 | ||
bedde04c | 1946 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
1947 | memset(value, 0, mf->n_bytes); |
1948 | memset(mask, 0, mf->n_bytes); | |
1949 | return NULL; | |
1950 | } | |
1951 | ||
1952 | switch (mf->string) { | |
1953 | case MFS_DECIMAL: | |
1954 | case MFS_HEXADECIMAL: | |
3634dff8 BP |
1955 | error = mf_from_integer_string(mf, s, |
1956 | (uint8_t *) value, (uint8_t *) mask); | |
1957 | break; | |
6a885fd0 BP |
1958 | |
1959 | case MFS_ETHERNET: | |
3634dff8 BP |
1960 | error = mf_from_ethernet_string(mf, s, value->mac, mask->mac); |
1961 | break; | |
6a885fd0 BP |
1962 | |
1963 | case MFS_IPV4: | |
3634dff8 BP |
1964 | error = mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); |
1965 | break; | |
6a885fd0 BP |
1966 | |
1967 | case MFS_IPV6: | |
3634dff8 BP |
1968 | error = mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); |
1969 | break; | |
6a885fd0 BP |
1970 | |
1971 | case MFS_OFP_PORT: | |
3634dff8 BP |
1972 | error = mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); |
1973 | break; | |
7257b535 | 1974 | |
72333065 | 1975 | case MFS_OFP_PORT_OXM: |
3634dff8 BP |
1976 | error = mf_from_ofp_port_string32(mf, s, &value->be32, &mask->be32); |
1977 | break; | |
72333065 | 1978 | |
7257b535 | 1979 | case MFS_FRAG: |
3634dff8 BP |
1980 | error = mf_from_frag_string(s, &value->u8, &mask->u8); |
1981 | break; | |
4fe3445a PS |
1982 | |
1983 | case MFS_TNL_FLAGS: | |
cb22974d | 1984 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
3634dff8 BP |
1985 | error = mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
1986 | break; | |
1987 | ||
61bf6666 JR |
1988 | case MFS_TCP_FLAGS: |
1989 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); | |
1990 | error = mf_from_tcp_flags_string(s, &value->be16, &mask->be16); | |
1991 | break; | |
1992 | ||
3634dff8 | 1993 | default: |
428b2edd | 1994 | OVS_NOT_REACHED(); |
6a885fd0 | 1995 | } |
3634dff8 BP |
1996 | |
1997 | if (!error && !mf_is_mask_valid(mf, mask)) { | |
1998 | error = xasprintf("%s: invalid mask for field %s", s, mf->name); | |
1999 | } | |
2000 | return error; | |
6a885fd0 BP |
2001 | } |
2002 | ||
2003 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2004 | * successful, otherwise a malloc()'d string describing the error. */ | |
2005 | char * | |
2006 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2007 | { | |
2008 | union mf_value mask; | |
2009 | char *error; | |
2010 | ||
2011 | error = mf_parse(mf, s, value, &mask); | |
2012 | if (error) { | |
2013 | return error; | |
2014 | } | |
2015 | ||
2016 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2017 | return xasprintf("%s: wildcards not allowed here", s); | |
2018 | } | |
2019 | return NULL; | |
2020 | } | |
2021 | ||
2022 | static void | |
2023 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2024 | const uint8_t *maskp, struct ds *s) | |
2025 | { | |
2026 | unsigned long long int integer; | |
2027 | int i; | |
2028 | ||
cb22974d | 2029 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 BP |
2030 | |
2031 | integer = 0; | |
2032 | for (i = 0; i < mf->n_bytes; i++) { | |
2033 | integer = (integer << 8) | valuep[i]; | |
2034 | } | |
2035 | if (mf->string == MFS_HEXADECIMAL) { | |
2036 | ds_put_format(s, "%#llx", integer); | |
2037 | } else { | |
2038 | ds_put_format(s, "%lld", integer); | |
2039 | } | |
2040 | ||
2041 | if (maskp) { | |
2042 | unsigned long long int mask; | |
2043 | ||
2044 | mask = 0; | |
2045 | for (i = 0; i < mf->n_bytes; i++) { | |
2046 | mask = (mask << 8) | maskp[i]; | |
2047 | } | |
2048 | ||
2049 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2050 | * not sure that that a bit-mask written in decimal is ever easier to | |
2051 | * understand than the same bit-mask written in hexadecimal. */ | |
2052 | ds_put_format(s, "/%#llx", mask); | |
2053 | } | |
2054 | } | |
2055 | ||
7257b535 | 2056 | static void |
8f75dea3 | 2057 | mf_format_frag_string(uint8_t value, uint8_t mask, struct ds *s) |
7257b535 BP |
2058 | { |
2059 | const struct frag_handling *h; | |
7257b535 | 2060 | |
eadef313 | 2061 | mask &= FLOW_NW_FRAG_MASK; |
8f75dea3 | 2062 | value &= mask; |
7257b535 BP |
2063 | |
2064 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2065 | if (value == h->value && mask == h->mask) { | |
2066 | ds_put_cstr(s, h->name); | |
2067 | return; | |
2068 | } | |
2069 | } | |
2070 | ds_put_cstr(s, "<error>"); | |
2071 | } | |
2072 | ||
4fe3445a PS |
2073 | static void |
2074 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2075 | { | |
2076 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2077 | } | |
2078 | ||
61bf6666 JR |
2079 | static void |
2080 | mf_format_tcp_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s) | |
2081 | { | |
2082 | format_flags_masked(s, NULL, packet_tcp_flag_to_string, ntohs(value), | |
2083 | TCP_FLAGS(mask)); | |
2084 | } | |
2085 | ||
6a885fd0 BP |
2086 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2087 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2088 | void | |
2089 | mf_format(const struct mf_field *mf, | |
2090 | const union mf_value *value, const union mf_value *mask, | |
2091 | struct ds *s) | |
2092 | { | |
2093 | if (mask) { | |
53cb9c3e | 2094 | if (is_all_zeros(mask, mf->n_bytes)) { |
6a885fd0 BP |
2095 | ds_put_cstr(s, "ANY"); |
2096 | return; | |
53cb9c3e | 2097 | } else if (is_all_ones(mask, mf->n_bytes)) { |
6a885fd0 BP |
2098 | mask = NULL; |
2099 | } | |
2100 | } | |
2101 | ||
2102 | switch (mf->string) { | |
72333065 JR |
2103 | case MFS_OFP_PORT_OXM: |
2104 | if (!mask) { | |
4e022ec0 | 2105 | ofp_port_t port; |
bc146369 | 2106 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
2107 | ofputil_format_port(port, s); |
2108 | break; | |
2109 | } | |
2110 | /* fall through */ | |
6a885fd0 BP |
2111 | case MFS_OFP_PORT: |
2112 | if (!mask) { | |
4e022ec0 | 2113 | ofputil_format_port(u16_to_ofp(ntohs(value->be16)), s); |
6a885fd0 BP |
2114 | break; |
2115 | } | |
2116 | /* fall through */ | |
2117 | case MFS_DECIMAL: | |
2118 | case MFS_HEXADECIMAL: | |
2119 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2120 | break; | |
2121 | ||
2122 | case MFS_ETHERNET: | |
3b4d8ad3 | 2123 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2124 | break; |
2125 | ||
2126 | case MFS_IPV4: | |
b8266395 | 2127 | ip_format_masked(value->be32, mask ? mask->be32 : OVS_BE32_MAX, s); |
6a885fd0 BP |
2128 | break; |
2129 | ||
2130 | case MFS_IPV6: | |
2131 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2132 | break; | |
2133 | ||
7257b535 | 2134 | case MFS_FRAG: |
8f75dea3 | 2135 | mf_format_frag_string(value->u8, mask ? mask->u8 : UINT8_MAX, s); |
7257b535 BP |
2136 | break; |
2137 | ||
4fe3445a PS |
2138 | case MFS_TNL_FLAGS: |
2139 | mf_format_tnl_flags_string(&value->be16, s); | |
2140 | break; | |
2141 | ||
61bf6666 JR |
2142 | case MFS_TCP_FLAGS: |
2143 | mf_format_tcp_flags_string(value->be16, | |
2144 | mask ? mask->be16 : OVS_BE16_MAX, s); | |
2145 | break; | |
2146 | ||
6a885fd0 | 2147 | default: |
428b2edd | 2148 | OVS_NOT_REACHED(); |
6a885fd0 BP |
2149 | } |
2150 | } | |
816fd533 | 2151 | \f |
9bab681f IY |
2152 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2153 | * least-significant bits in 'x'. | |
2154 | */ | |
2155 | void | |
2156 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2157 | const union mf_subvalue *x, struct flow *flow) | |
2158 | { | |
2159 | const struct mf_field *field = sf->field; | |
2160 | union mf_value value; | |
2161 | ||
2162 | mf_get_value(field, flow, &value); | |
158edc8d | 2163 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2164 | sf->ofs, sf->n_bits); |
2165 | mf_set_flow_value(field, &value, flow); | |
2166 | } | |
2167 | ||
81a76618 | 2168 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2169 | * least-significant bits in 'x'. |
615660a9 | 2170 | */ |
1b35df45 BP |
2171 | void |
2172 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2173 | struct match *match) |
1b35df45 BP |
2174 | { |
2175 | const struct mf_field *field = sf->field; | |
2176 | union mf_value value, mask; | |
2177 | ||
81a76618 | 2178 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2179 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2180 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2181 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2182 | } |
2183 | ||
1b35df45 BP |
2184 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2185 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2186 | void | |
2187 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2188 | union mf_subvalue *x) | |
2189 | { | |
2190 | union mf_value value; | |
2191 | ||
2192 | mf_get_value(sf->field, flow, &value); | |
2193 | ||
2194 | memset(x, 0, sizeof *x); | |
2195 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2196 | x, sizeof *x, 0, | |
2197 | sf->n_bits); | |
2198 | } | |
2199 | ||
816fd533 BP |
2200 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2201 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2202 | * less. */ | |
2203 | uint64_t | |
2204 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2205 | { | |
2206 | union mf_value value; | |
2207 | ||
2208 | mf_get_value(sf->field, flow, &value); | |
2209 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2210 | } | |
2211 | ||
9bab681f IY |
2212 | void |
2213 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2214 | { | |
2215 | int i; | |
2216 | ||
2217 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2218 | if (subvalue->u8[i]) { | |
2219 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2220 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2221 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2222 | } | |
2223 | return; | |
2224 | } | |
2225 | } | |
2226 | ds_put_char(s, '0'); | |
2227 | } |