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6a885fd0 | 1 | /* |
35c1f798 | 2 | * Copyright (c) 2011, 2012, 2013, 2014, 2015 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" |
e6211adc | 38 | #include "openvswitch/vlog.h" |
816fd533 BP |
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 | ||
35c1f798 BP |
98 | /* Consider the two value/mask pairs 'a_value/a_mask' and 'b_value/b_mask' as |
99 | * restrictions on a field's value. Then, this function initializes | |
100 | * 'dst_value/dst_mask' such that it combines the restrictions of both pairs. | |
101 | * This is not always possible, i.e. if one pair insists on a value of 0 in | |
102 | * some bit and the other pair insists on a value of 1 in that bit. This | |
103 | * function returns false in a case where the combined restriction is | |
104 | * impossible (in which case 'dst_value/dst_mask' is not fully initialized), | |
105 | * true otherwise. | |
106 | * | |
107 | * (As usually true for value/mask pairs in OVS, any 1-bit in a value must have | |
108 | * a corresponding 1-bit in its mask.) */ | |
109 | bool | |
110 | mf_subvalue_intersect(const union mf_subvalue *a_value, | |
111 | const union mf_subvalue *a_mask, | |
112 | const union mf_subvalue *b_value, | |
113 | const union mf_subvalue *b_mask, | |
114 | union mf_subvalue *dst_value, | |
115 | union mf_subvalue *dst_mask) | |
116 | { | |
117 | for (int i = 0; i < ARRAY_SIZE(a_value->be64); i++) { | |
118 | ovs_be64 av = a_value->be64[i]; | |
119 | ovs_be64 am = a_mask->be64[i]; | |
120 | ovs_be64 bv = b_value->be64[i]; | |
121 | ovs_be64 bm = b_mask->be64[i]; | |
122 | ovs_be64 *dv = &dst_value->be64[i]; | |
123 | ovs_be64 *dm = &dst_mask->be64[i]; | |
124 | ||
125 | if ((av ^ bv) & (am & bm)) { | |
126 | return false; | |
127 | } | |
128 | *dv = av | bv; | |
129 | *dm = am | bm; | |
130 | } | |
131 | return true; | |
132 | } | |
133 | ||
134 | /* Returns the "number of bits" in 'v', e.g. 1 if only the lowest-order bit is | |
135 | * set, 2 if the second-lowest-order bit is set, and so on. */ | |
136 | int | |
137 | mf_subvalue_width(const union mf_subvalue *v) | |
138 | { | |
139 | return 1 + bitwise_rscan(v, sizeof *v, true, sizeof *v * 8 - 1, -1); | |
140 | } | |
141 | ||
142 | /* For positive 'n', shifts the bits in 'value' 'n' bits to the left, and for | |
143 | * negative 'n', shifts the bits '-n' bits to the right. */ | |
144 | void | |
145 | mf_subvalue_shift(union mf_subvalue *value, int n) | |
146 | { | |
147 | if (n) { | |
148 | union mf_subvalue tmp; | |
149 | memset(&tmp, 0, sizeof tmp); | |
150 | ||
151 | if (n > 0 && n < 8 * sizeof tmp) { | |
152 | bitwise_copy(value, sizeof *value, 0, | |
153 | &tmp, sizeof tmp, n, | |
154 | 8 * sizeof tmp - n); | |
155 | } else if (n < 0 && n > -8 * sizeof tmp) { | |
156 | bitwise_copy(value, sizeof *value, -n, | |
157 | &tmp, sizeof tmp, 0, | |
158 | 8 * sizeof tmp + n); | |
159 | } | |
160 | *value = tmp; | |
161 | } | |
162 | } | |
163 | ||
6a885fd0 BP |
164 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
165 | * specifies at least one bit in the field. | |
166 | * | |
167 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
168 | * meets 'mf''s prerequisites. */ | |
169 | bool | |
170 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
171 | { | |
172 | switch (mf->id) { | |
a79f29f2 AZ |
173 | case MFF_DP_HASH: |
174 | return !wc->masks.dp_hash; | |
175 | case MFF_RECIRC_ID: | |
176 | return !wc->masks.recirc_id; | |
18080541 BP |
177 | case MFF_CONJ_ID: |
178 | return !wc->masks.conj_id; | |
4fe3445a | 179 | case MFF_TUN_SRC: |
0ad90c84 | 180 | return !wc->masks.tunnel.ip_src; |
4fe3445a | 181 | case MFF_TUN_DST: |
0ad90c84 JR |
182 | return !wc->masks.tunnel.ip_dst; |
183 | case MFF_TUN_ID: | |
4fe3445a PS |
184 | case MFF_TUN_TOS: |
185 | case MFF_TUN_TTL: | |
186 | case MFF_TUN_FLAGS: | |
296e07ac | 187 | return !wc->masks.tunnel.tun_id; |
ac6073e3 MC |
188 | case MFF_TUN_GBP_ID: |
189 | return !wc->masks.tunnel.gbp_id; | |
190 | case MFF_TUN_GBP_FLAGS: | |
191 | return !wc->masks.tunnel.gbp_flags; | |
969fc56c | 192 | case MFF_METADATA: |
26720e24 | 193 | return !wc->masks.metadata; |
0bdc4bec | 194 | case MFF_IN_PORT: |
72333065 | 195 | case MFF_IN_PORT_OXM: |
4e022ec0 | 196 | return !wc->masks.in_port.ofp_port; |
1b567fb9 AA |
197 | case MFF_SKB_PRIORITY: |
198 | return !wc->masks.skb_priority; | |
1362e248 JG |
199 | case MFF_PKT_MARK: |
200 | return !wc->masks.pkt_mark; | |
0d7e2fe4 | 201 | CASE_MFF_REGS: |
26720e24 | 202 | return !wc->masks.regs[mf->id - MFF_REG0]; |
79fe0f46 BP |
203 | CASE_MFF_XREGS: |
204 | return !flow_get_xreg(&wc->masks, mf->id - MFF_XREG0); | |
c61f3870 BP |
205 | case MFF_ACTSET_OUTPUT: |
206 | return !wc->masks.actset_output; | |
6a885fd0 | 207 | |
73c0ce34 | 208 | case MFF_ETH_SRC: |
26720e24 | 209 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 210 | case MFF_ETH_DST: |
26720e24 | 211 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 212 | case MFF_ETH_TYPE: |
26720e24 | 213 | return !wc->masks.dl_type; |
6a885fd0 | 214 | |
e878338b SH |
215 | case MFF_ARP_SHA: |
216 | case MFF_ND_SLL: | |
26720e24 | 217 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
218 | |
219 | case MFF_ARP_THA: | |
220 | case MFF_ND_TLL: | |
26720e24 | 221 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 222 | |
6a885fd0 | 223 | case MFF_VLAN_TCI: |
26720e24 | 224 | return !wc->masks.vlan_tci; |
441c57a9 | 225 | case MFF_DL_VLAN: |
26720e24 | 226 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 227 | case MFF_VLAN_VID: |
26720e24 | 228 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 229 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 230 | case MFF_VLAN_PCP: |
26720e24 | 231 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 | 232 | |
b02475c5 | 233 | case MFF_MPLS_LABEL: |
8bfd0fda | 234 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)); |
b02475c5 | 235 | case MFF_MPLS_TC: |
60df616f | 236 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK)); |
b02475c5 | 237 | case MFF_MPLS_BOS: |
60df616f | 238 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)); |
b02475c5 | 239 | |
6a885fd0 | 240 | case MFF_IPV4_SRC: |
26720e24 | 241 | return !wc->masks.nw_src; |
6a885fd0 | 242 | case MFF_IPV4_DST: |
26720e24 | 243 | return !wc->masks.nw_dst; |
6a885fd0 BP |
244 | |
245 | case MFF_IPV6_SRC: | |
26720e24 | 246 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 247 | case MFF_IPV6_DST: |
26720e24 | 248 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 249 | |
32455024 | 250 | case MFF_IPV6_LABEL: |
26720e24 | 251 | return !wc->masks.ipv6_label; |
32455024 | 252 | |
851d3105 | 253 | case MFF_IP_PROTO: |
26720e24 | 254 | return !wc->masks.nw_proto; |
5d9499c4 | 255 | case MFF_IP_DSCP: |
1638b906 | 256 | case MFF_IP_DSCP_SHIFTED: |
26720e24 | 257 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 258 | case MFF_IP_ECN: |
26720e24 | 259 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 260 | case MFF_IP_TTL: |
26720e24 | 261 | return !wc->masks.nw_ttl; |
5d9499c4 | 262 | |
47284b1f | 263 | case MFF_ND_TARGET: |
26720e24 | 264 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 265 | |
7257b535 | 266 | case MFF_IP_FRAG: |
26720e24 | 267 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 268 | |
851d3105 | 269 | case MFF_ARP_OP: |
26720e24 | 270 | return !wc->masks.nw_proto; |
6a885fd0 | 271 | case MFF_ARP_SPA: |
26720e24 | 272 | return !wc->masks.nw_src; |
6a885fd0 | 273 | case MFF_ARP_TPA: |
26720e24 | 274 | return !wc->masks.nw_dst; |
6a885fd0 | 275 | |
73f33563 BP |
276 | case MFF_TCP_SRC: |
277 | case MFF_UDP_SRC: | |
0d56eaf2 | 278 | case MFF_SCTP_SRC: |
73f33563 BP |
279 | case MFF_ICMPV4_TYPE: |
280 | case MFF_ICMPV6_TYPE: | |
26720e24 | 281 | return !wc->masks.tp_src; |
73f33563 BP |
282 | case MFF_TCP_DST: |
283 | case MFF_UDP_DST: | |
0d56eaf2 | 284 | case MFF_SCTP_DST: |
73f33563 BP |
285 | case MFF_ICMPV4_CODE: |
286 | case MFF_ICMPV6_CODE: | |
26720e24 | 287 | return !wc->masks.tp_dst; |
dc235f7f JR |
288 | case MFF_TCP_FLAGS: |
289 | return !wc->masks.tcp_flags; | |
73f33563 | 290 | |
6a885fd0 BP |
291 | case MFF_N_IDS: |
292 | default: | |
428b2edd | 293 | OVS_NOT_REACHED(); |
6a885fd0 BP |
294 | } |
295 | } | |
296 | ||
297 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
298 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
299 | * purposes, or to 0 if it is wildcarded. | |
300 | * | |
301 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
302 | * meets 'mf''s prerequisites. */ | |
303 | void | |
304 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
305 | union mf_value *mask) | |
306 | { | |
fb15feb0 | 307 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
308 | } |
309 | ||
310 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
311 | * if the mask is valid, false otherwise. */ | |
312 | bool | |
313 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
314 | { | |
315 | switch (mf->maskable) { | |
316 | case MFM_NONE: | |
53cb9c3e JR |
317 | return (is_all_zeros(mask, mf->n_bytes) || |
318 | is_all_ones(mask, mf->n_bytes)); | |
6a885fd0 BP |
319 | |
320 | case MFM_FULLY: | |
321 | return true; | |
6a885fd0 BP |
322 | } |
323 | ||
428b2edd | 324 | OVS_NOT_REACHED(); |
6a885fd0 BP |
325 | } |
326 | ||
6a885fd0 BP |
327 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ |
328 | bool | |
329 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
330 | { | |
331 | switch (mf->prereqs) { | |
332 | case MFP_NONE: | |
333 | return true; | |
334 | ||
335 | case MFP_ARP: | |
8087f5ff MM |
336 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
337 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
338 | case MFP_IPV4: |
339 | return flow->dl_type == htons(ETH_TYPE_IP); | |
340 | case MFP_IPV6: | |
341 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 342 | case MFP_VLAN_VID: |
5921e99a | 343 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
b02475c5 SH |
344 | case MFP_MPLS: |
345 | return eth_type_mpls(flow->dl_type); | |
6a885fd0 BP |
346 | case MFP_IP_ANY: |
347 | return is_ip_any(flow); | |
348 | ||
349 | case MFP_TCP: | |
b8778a0d JR |
350 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP |
351 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
6a885fd0 | 352 | case MFP_UDP: |
b8778a0d JR |
353 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP |
354 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
0d56eaf2 | 355 | case MFP_SCTP: |
b8778a0d JR |
356 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_SCTP |
357 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
268a95e0 BP |
358 | case MFP_ICMPV4: |
359 | return is_icmpv4(flow); | |
6a885fd0 BP |
360 | case MFP_ICMPV6: |
361 | return is_icmpv6(flow); | |
6a885fd0 BP |
362 | |
363 | case MFP_ND: | |
364 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
365 | && flow->tp_dst == htons(0) |
366 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
367 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
368 | case MFP_ND_SOLICIT: |
369 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
370 | && flow->tp_dst == htons(0) |
371 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
372 | case MFP_ND_ADVERT: |
373 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
374 | && flow->tp_dst == htons(0) |
375 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
376 | } |
377 | ||
428b2edd | 378 | OVS_NOT_REACHED(); |
6a885fd0 BP |
379 | } |
380 | ||
b283836c JR |
381 | /* Set field and it's prerequisities in the mask. |
382 | * This is only ever called for writeable 'mf's, but we do not make the | |
383 | * distinction here. */ | |
384 | void | |
385 | mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow *mask) | |
386 | { | |
4531547f | 387 | static union mf_value exact_match_mask; |
b283836c | 388 | |
4531547f | 389 | memset(&exact_match_mask, 0xff, sizeof exact_match_mask); |
b283836c JR |
390 | mf_set_flow_value(mf, &exact_match_mask, mask); |
391 | ||
392 | switch (mf->prereqs) { | |
393 | case MFP_ND: | |
394 | case MFP_ND_SOLICIT: | |
395 | case MFP_ND_ADVERT: | |
396 | mask->tp_src = OVS_BE16_MAX; | |
397 | mask->tp_dst = OVS_BE16_MAX; | |
398 | /* Fall through. */ | |
399 | case MFP_TCP: | |
400 | case MFP_UDP: | |
401 | case MFP_SCTP: | |
402 | case MFP_ICMPV4: | |
403 | case MFP_ICMPV6: | |
b8778a0d | 404 | /* nw_frag always unwildcarded. */ |
b283836c JR |
405 | mask->nw_proto = 0xff; |
406 | /* Fall through. */ | |
407 | case MFP_ARP: | |
408 | case MFP_IPV4: | |
409 | case MFP_IPV6: | |
410 | case MFP_MPLS: | |
411 | case MFP_IP_ANY: | |
412 | mask->dl_type = OVS_BE16_MAX; | |
413 | break; | |
414 | case MFP_VLAN_VID: | |
415 | mask->vlan_tci |= htons(VLAN_CFI); | |
416 | break; | |
417 | case MFP_NONE: | |
418 | break; | |
419 | } | |
420 | } | |
421 | ||
0c4b9393 SH |
422 | /* Set bits of 'bm' corresponding to the field 'mf' and it's prerequisities. */ |
423 | void | |
424 | mf_bitmap_set_field_and_prereqs(const struct mf_field *mf, struct mf_bitmap *bm) | |
425 | { | |
426 | bitmap_set1(bm->bm, mf->id); | |
427 | ||
428 | switch (mf->prereqs) { | |
429 | case MFP_ND: | |
430 | case MFP_ND_SOLICIT: | |
431 | case MFP_ND_ADVERT: | |
432 | bitmap_set1(bm->bm, MFF_TCP_SRC); | |
433 | bitmap_set1(bm->bm, MFF_TCP_DST); | |
434 | /* Fall through. */ | |
435 | case MFP_TCP: | |
436 | case MFP_UDP: | |
437 | case MFP_SCTP: | |
438 | case MFP_ICMPV4: | |
439 | case MFP_ICMPV6: | |
440 | /* nw_frag always unwildcarded. */ | |
441 | bitmap_set1(bm->bm, MFF_IP_PROTO); | |
442 | /* Fall through. */ | |
443 | case MFP_ARP: | |
444 | case MFP_IPV4: | |
445 | case MFP_IPV6: | |
446 | case MFP_MPLS: | |
447 | case MFP_IP_ANY: | |
448 | bitmap_set1(bm->bm, MFF_ETH_TYPE); | |
449 | break; | |
450 | case MFP_VLAN_VID: | |
451 | bitmap_set1(bm->bm, MFF_VLAN_TCI); | |
452 | break; | |
453 | case MFP_NONE: | |
454 | break; | |
455 | } | |
456 | } | |
b283836c | 457 | |
6a885fd0 BP |
458 | /* Returns true if 'value' may be a valid value *as part of a masked match*, |
459 | * false otherwise. | |
460 | * | |
461 | * A value is not rejected just because it is not valid for the field in | |
462 | * question, but only if it doesn't make sense to test the bits in question at | |
463 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
464 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
465 | * it is still legitimate to test just for those bits (see the documentation | |
466 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 467 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
468 | bool |
469 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
470 | { | |
471 | switch (mf->id) { | |
a79f29f2 AZ |
472 | case MFF_DP_HASH: |
473 | case MFF_RECIRC_ID: | |
18080541 | 474 | case MFF_CONJ_ID: |
6a885fd0 | 475 | case MFF_TUN_ID: |
4fe3445a PS |
476 | case MFF_TUN_SRC: |
477 | case MFF_TUN_DST: | |
478 | case MFF_TUN_TOS: | |
479 | case MFF_TUN_TTL: | |
480 | case MFF_TUN_FLAGS: | |
ac6073e3 MC |
481 | case MFF_TUN_GBP_ID: |
482 | case MFF_TUN_GBP_FLAGS: | |
969fc56c | 483 | case MFF_METADATA: |
6a885fd0 | 484 | case MFF_IN_PORT: |
1b567fb9 | 485 | case MFF_SKB_PRIORITY: |
1362e248 | 486 | case MFF_PKT_MARK: |
0d7e2fe4 | 487 | CASE_MFF_REGS: |
79fe0f46 | 488 | CASE_MFF_XREGS: |
6a885fd0 BP |
489 | case MFF_ETH_SRC: |
490 | case MFF_ETH_DST: | |
491 | case MFF_ETH_TYPE: | |
492 | case MFF_VLAN_TCI: | |
493 | case MFF_IPV4_SRC: | |
494 | case MFF_IPV4_DST: | |
495 | case MFF_IPV6_SRC: | |
496 | case MFF_IPV6_DST: | |
497 | case MFF_IP_PROTO: | |
a61680c6 | 498 | case MFF_IP_TTL: |
6a885fd0 BP |
499 | case MFF_ARP_SPA: |
500 | case MFF_ARP_TPA: | |
501 | case MFF_ARP_SHA: | |
502 | case MFF_ARP_THA: | |
503 | case MFF_TCP_SRC: | |
504 | case MFF_TCP_DST: | |
505 | case MFF_UDP_SRC: | |
506 | case MFF_UDP_DST: | |
0d56eaf2 JS |
507 | case MFF_SCTP_SRC: |
508 | case MFF_SCTP_DST: | |
268a95e0 BP |
509 | case MFF_ICMPV4_TYPE: |
510 | case MFF_ICMPV4_CODE: | |
511 | case MFF_ICMPV6_TYPE: | |
512 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
513 | case MFF_ND_TARGET: |
514 | case MFF_ND_SLL: | |
515 | case MFF_ND_TLL: | |
516 | return true; | |
517 | ||
c61f3870 BP |
518 | case MFF_IN_PORT_OXM: |
519 | case MFF_ACTSET_OUTPUT: { | |
4e022ec0 | 520 | ofp_port_t port; |
72333065 JR |
521 | return !ofputil_port_from_ofp11(value->be32, &port); |
522 | } | |
523 | ||
530180fd | 524 | case MFF_IP_DSCP: |
7257b535 | 525 | return !(value->u8 & ~IP_DSCP_MASK); |
1638b906 BP |
526 | case MFF_IP_DSCP_SHIFTED: |
527 | return !(value->u8 & (~IP_DSCP_MASK >> 2)); | |
530180fd JP |
528 | case MFF_IP_ECN: |
529 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 530 | case MFF_IP_FRAG: |
eadef313 | 531 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
dc235f7f JR |
532 | case MFF_TCP_FLAGS: |
533 | return !(value->be16 & ~htons(0x0fff)); | |
6a885fd0 BP |
534 | |
535 | case MFF_ARP_OP: | |
536 | return !(value->be16 & htons(0xff00)); | |
537 | ||
441c57a9 | 538 | case MFF_DL_VLAN: |
6a885fd0 | 539 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
540 | case MFF_VLAN_VID: |
541 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 542 | |
441c57a9 | 543 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 544 | case MFF_VLAN_PCP: |
24016f5a | 545 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 546 | |
fa8223b7 JP |
547 | case MFF_IPV6_LABEL: |
548 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
549 | ||
b02475c5 SH |
550 | case MFF_MPLS_LABEL: |
551 | return !(value->be32 & ~htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT)); | |
552 | ||
553 | case MFF_MPLS_TC: | |
554 | return !(value->u8 & ~(MPLS_TC_MASK >> MPLS_TC_SHIFT)); | |
555 | ||
556 | case MFF_MPLS_BOS: | |
557 | return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT)); | |
558 | ||
6a885fd0 BP |
559 | case MFF_N_IDS: |
560 | default: | |
428b2edd | 561 | OVS_NOT_REACHED(); |
6a885fd0 BP |
562 | } |
563 | } | |
564 | ||
565 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
566 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
567 | void | |
568 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
569 | union mf_value *value) | |
570 | { | |
571 | switch (mf->id) { | |
a79f29f2 AZ |
572 | case MFF_DP_HASH: |
573 | value->be32 = htonl(flow->dp_hash); | |
574 | break; | |
575 | case MFF_RECIRC_ID: | |
576 | value->be32 = htonl(flow->recirc_id); | |
577 | break; | |
18080541 BP |
578 | case MFF_CONJ_ID: |
579 | value->be32 = htonl(flow->conj_id); | |
580 | break; | |
6a885fd0 | 581 | case MFF_TUN_ID: |
296e07ac | 582 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 583 | break; |
4fe3445a PS |
584 | case MFF_TUN_SRC: |
585 | value->be32 = flow->tunnel.ip_src; | |
586 | break; | |
587 | case MFF_TUN_DST: | |
588 | value->be32 = flow->tunnel.ip_dst; | |
589 | break; | |
590 | case MFF_TUN_FLAGS: | |
591 | value->be16 = htons(flow->tunnel.flags); | |
592 | break; | |
ac6073e3 MC |
593 | case MFF_TUN_GBP_ID: |
594 | value->be16 = flow->tunnel.gbp_id; | |
595 | break; | |
596 | case MFF_TUN_GBP_FLAGS: | |
597 | value->u8 = flow->tunnel.gbp_flags; | |
598 | break; | |
4fe3445a PS |
599 | case MFF_TUN_TTL: |
600 | value->u8 = flow->tunnel.ip_ttl; | |
601 | break; | |
602 | case MFF_TUN_TOS: | |
603 | value->u8 = flow->tunnel.ip_tos; | |
604 | break; | |
605 | ||
969fc56c JS |
606 | case MFF_METADATA: |
607 | value->be64 = flow->metadata; | |
608 | break; | |
6a885fd0 BP |
609 | |
610 | case MFF_IN_PORT: | |
4e022ec0 | 611 | value->be16 = htons(ofp_to_u16(flow->in_port.ofp_port)); |
6a885fd0 | 612 | break; |
72333065 | 613 | case MFF_IN_PORT_OXM: |
4e022ec0 | 614 | value->be32 = ofputil_port_to_ofp11(flow->in_port.ofp_port); |
72333065 | 615 | break; |
c61f3870 BP |
616 | case MFF_ACTSET_OUTPUT: |
617 | value->be32 = ofputil_port_to_ofp11(flow->actset_output); | |
618 | break; | |
72333065 | 619 | |
1b567fb9 | 620 | case MFF_SKB_PRIORITY: |
a81f0a44 | 621 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
622 | break; |
623 | ||
1362e248 JG |
624 | case MFF_PKT_MARK: |
625 | value->be32 = htonl(flow->pkt_mark); | |
1b567fb9 AA |
626 | break; |
627 | ||
0d7e2fe4 | 628 | CASE_MFF_REGS: |
2f98b0b7 | 629 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
630 | break; |
631 | ||
79fe0f46 BP |
632 | CASE_MFF_XREGS: |
633 | value->be64 = htonll(flow_get_xreg(flow, mf->id - MFF_XREG0)); | |
634 | break; | |
635 | ||
6a885fd0 BP |
636 | case MFF_ETH_SRC: |
637 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
638 | break; | |
639 | ||
640 | case MFF_ETH_DST: | |
641 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
642 | break; | |
643 | ||
644 | case MFF_ETH_TYPE: | |
645 | value->be16 = flow->dl_type; | |
646 | break; | |
647 | ||
648 | case MFF_VLAN_TCI: | |
649 | value->be16 = flow->vlan_tci; | |
650 | break; | |
651 | ||
441c57a9 | 652 | case MFF_DL_VLAN: |
6a885fd0 BP |
653 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
654 | break; | |
cc34bc8c BP |
655 | case MFF_VLAN_VID: |
656 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
657 | break; | |
6a885fd0 | 658 | |
441c57a9 | 659 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 660 | case MFF_VLAN_PCP: |
6a885fd0 BP |
661 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
662 | break; | |
663 | ||
b02475c5 | 664 | case MFF_MPLS_LABEL: |
8bfd0fda | 665 | value->be32 = htonl(mpls_lse_to_label(flow->mpls_lse[0])); |
b02475c5 SH |
666 | break; |
667 | ||
668 | case MFF_MPLS_TC: | |
8bfd0fda | 669 | value->u8 = mpls_lse_to_tc(flow->mpls_lse[0]); |
b02475c5 SH |
670 | break; |
671 | ||
672 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
673 | value->u8 = mpls_lse_to_bos(flow->mpls_lse[0]); |
674 | break; | |
b02475c5 | 675 | |
6a885fd0 BP |
676 | case MFF_IPV4_SRC: |
677 | value->be32 = flow->nw_src; | |
678 | break; | |
679 | ||
680 | case MFF_IPV4_DST: | |
681 | value->be32 = flow->nw_dst; | |
682 | break; | |
683 | ||
684 | case MFF_IPV6_SRC: | |
685 | value->ipv6 = flow->ipv6_src; | |
686 | break; | |
687 | ||
688 | case MFF_IPV6_DST: | |
689 | value->ipv6 = flow->ipv6_dst; | |
690 | break; | |
691 | ||
fa8223b7 JP |
692 | case MFF_IPV6_LABEL: |
693 | value->be32 = flow->ipv6_label; | |
694 | break; | |
695 | ||
6a885fd0 BP |
696 | case MFF_IP_PROTO: |
697 | value->u8 = flow->nw_proto; | |
698 | break; | |
699 | ||
530180fd | 700 | case MFF_IP_DSCP: |
eadef313 | 701 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
702 | break; |
703 | ||
1638b906 BP |
704 | case MFF_IP_DSCP_SHIFTED: |
705 | value->u8 = flow->nw_tos >> 2; | |
706 | break; | |
707 | ||
530180fd | 708 | case MFF_IP_ECN: |
eadef313 | 709 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
710 | break; |
711 | ||
a61680c6 JP |
712 | case MFF_IP_TTL: |
713 | value->u8 = flow->nw_ttl; | |
714 | break; | |
715 | ||
7257b535 | 716 | case MFF_IP_FRAG: |
eadef313 | 717 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
718 | break; |
719 | ||
720 | case MFF_ARP_OP: | |
721 | value->be16 = htons(flow->nw_proto); | |
722 | break; | |
723 | ||
724 | case MFF_ARP_SPA: | |
725 | value->be32 = flow->nw_src; | |
726 | break; | |
727 | ||
728 | case MFF_ARP_TPA: | |
729 | value->be32 = flow->nw_dst; | |
730 | break; | |
731 | ||
732 | case MFF_ARP_SHA: | |
733 | case MFF_ND_SLL: | |
734 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
735 | break; | |
736 | ||
737 | case MFF_ARP_THA: | |
738 | case MFF_ND_TLL: | |
739 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
740 | break; | |
741 | ||
742 | case MFF_TCP_SRC: | |
6a885fd0 | 743 | case MFF_UDP_SRC: |
0d56eaf2 | 744 | case MFF_SCTP_SRC: |
6a885fd0 BP |
745 | value->be16 = flow->tp_src; |
746 | break; | |
747 | ||
71baec06 | 748 | case MFF_TCP_DST: |
6a885fd0 | 749 | case MFF_UDP_DST: |
0d56eaf2 | 750 | case MFF_SCTP_DST: |
6a885fd0 BP |
751 | value->be16 = flow->tp_dst; |
752 | break; | |
753 | ||
dc235f7f JR |
754 | case MFF_TCP_FLAGS: |
755 | value->be16 = flow->tcp_flags; | |
756 | break; | |
757 | ||
268a95e0 BP |
758 | case MFF_ICMPV4_TYPE: |
759 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
760 | value->u8 = ntohs(flow->tp_src); |
761 | break; | |
762 | ||
268a95e0 BP |
763 | case MFF_ICMPV4_CODE: |
764 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
765 | value->u8 = ntohs(flow->tp_dst); |
766 | break; | |
767 | ||
768 | case MFF_ND_TARGET: | |
769 | value->ipv6 = flow->nd_target; | |
770 | break; | |
771 | ||
772 | case MFF_N_IDS: | |
773 | default: | |
428b2edd | 774 | OVS_NOT_REACHED(); |
6a885fd0 BP |
775 | } |
776 | } | |
777 | ||
81a76618 BP |
778 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
779 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
780 | * prerequisites. */ |
781 | void | |
782 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 783 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
784 | { |
785 | switch (mf->id) { | |
a79f29f2 AZ |
786 | case MFF_DP_HASH: |
787 | match_set_dp_hash(match, ntohl(value->be32)); | |
788 | break; | |
789 | case MFF_RECIRC_ID: | |
790 | match_set_recirc_id(match, ntohl(value->be32)); | |
791 | break; | |
18080541 BP |
792 | case MFF_CONJ_ID: |
793 | match_set_conj_id(match, ntohl(value->be32)); | |
794 | break; | |
6a885fd0 | 795 | case MFF_TUN_ID: |
81a76618 | 796 | match_set_tun_id(match, value->be64); |
6a885fd0 | 797 | break; |
4fe3445a PS |
798 | case MFF_TUN_SRC: |
799 | match_set_tun_src(match, value->be32); | |
800 | break; | |
801 | case MFF_TUN_DST: | |
802 | match_set_tun_dst(match, value->be32); | |
803 | break; | |
804 | case MFF_TUN_FLAGS: | |
805 | match_set_tun_flags(match, ntohs(value->be16)); | |
806 | break; | |
ac6073e3 MC |
807 | case MFF_TUN_GBP_ID: |
808 | match_set_tun_gbp_id(match, value->be16); | |
809 | break; | |
810 | case MFF_TUN_GBP_FLAGS: | |
811 | match_set_tun_gbp_flags(match, value->u8); | |
812 | break; | |
4fe3445a PS |
813 | case MFF_TUN_TOS: |
814 | match_set_tun_tos(match, value->u8); | |
815 | break; | |
816 | case MFF_TUN_TTL: | |
817 | match_set_tun_ttl(match, value->u8); | |
818 | break; | |
819 | ||
969fc56c | 820 | case MFF_METADATA: |
81a76618 | 821 | match_set_metadata(match, value->be64); |
969fc56c | 822 | break; |
6a885fd0 BP |
823 | |
824 | case MFF_IN_PORT: | |
4e022ec0 | 825 | match_set_in_port(match, u16_to_ofp(ntohs(value->be16))); |
6a885fd0 BP |
826 | break; |
827 | ||
72333065 | 828 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 829 | ofp_port_t port; |
bc146369 | 830 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
831 | match_set_in_port(match, port); |
832 | break; | |
833 | } | |
c61f3870 BP |
834 | case MFF_ACTSET_OUTPUT: { |
835 | ofp_port_t port; | |
836 | ofputil_port_from_ofp11(value->be32, &port); | |
837 | match_set_actset_output(match, port); | |
838 | break; | |
839 | } | |
72333065 | 840 | |
1b567fb9 AA |
841 | case MFF_SKB_PRIORITY: |
842 | match_set_skb_priority(match, ntohl(value->be32)); | |
843 | break; | |
844 | ||
1362e248 JG |
845 | case MFF_PKT_MARK: |
846 | match_set_pkt_mark(match, ntohl(value->be32)); | |
1b567fb9 AA |
847 | break; |
848 | ||
0d7e2fe4 | 849 | CASE_MFF_REGS: |
81a76618 | 850 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 851 | break; |
6a885fd0 | 852 | |
79fe0f46 BP |
853 | CASE_MFF_XREGS: |
854 | match_set_xreg(match, mf->id - MFF_XREG0, ntohll(value->be64)); | |
855 | break; | |
856 | ||
6a885fd0 | 857 | case MFF_ETH_SRC: |
81a76618 | 858 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
859 | break; |
860 | ||
861 | case MFF_ETH_DST: | |
81a76618 | 862 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
863 | break; |
864 | ||
865 | case MFF_ETH_TYPE: | |
81a76618 | 866 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
867 | break; |
868 | ||
869 | case MFF_VLAN_TCI: | |
81a76618 | 870 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
871 | break; |
872 | ||
441c57a9 | 873 | case MFF_DL_VLAN: |
81a76618 | 874 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 875 | break; |
cc34bc8c | 876 | case MFF_VLAN_VID: |
81a76618 | 877 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 878 | break; |
6a885fd0 | 879 | |
441c57a9 | 880 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 881 | case MFF_VLAN_PCP: |
81a76618 | 882 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
883 | break; |
884 | ||
b02475c5 | 885 | case MFF_MPLS_LABEL: |
8bfd0fda | 886 | match_set_mpls_label(match, 0, value->be32); |
b02475c5 SH |
887 | break; |
888 | ||
889 | case MFF_MPLS_TC: | |
8bfd0fda | 890 | match_set_mpls_tc(match, 0, value->u8); |
b02475c5 SH |
891 | break; |
892 | ||
893 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
894 | match_set_mpls_bos(match, 0, value->u8); |
895 | break; | |
b02475c5 | 896 | |
6a885fd0 | 897 | case MFF_IPV4_SRC: |
81a76618 | 898 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
899 | break; |
900 | ||
901 | case MFF_IPV4_DST: | |
81a76618 | 902 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
903 | break; |
904 | ||
905 | case MFF_IPV6_SRC: | |
81a76618 | 906 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
907 | break; |
908 | ||
909 | case MFF_IPV6_DST: | |
81a76618 | 910 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
911 | break; |
912 | ||
fa8223b7 | 913 | case MFF_IPV6_LABEL: |
81a76618 | 914 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
915 | break; |
916 | ||
6a885fd0 | 917 | case MFF_IP_PROTO: |
81a76618 | 918 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
919 | break; |
920 | ||
530180fd | 921 | case MFF_IP_DSCP: |
81a76618 | 922 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
923 | break; |
924 | ||
1638b906 BP |
925 | case MFF_IP_DSCP_SHIFTED: |
926 | match_set_nw_dscp(match, value->u8 << 2); | |
927 | break; | |
928 | ||
530180fd | 929 | case MFF_IP_ECN: |
81a76618 | 930 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
931 | break; |
932 | ||
a61680c6 | 933 | case MFF_IP_TTL: |
81a76618 | 934 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
935 | break; |
936 | ||
7257b535 | 937 | case MFF_IP_FRAG: |
81a76618 | 938 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
939 | break; |
940 | ||
6a885fd0 | 941 | case MFF_ARP_OP: |
81a76618 | 942 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
943 | break; |
944 | ||
945 | case MFF_ARP_SPA: | |
81a76618 | 946 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
947 | break; |
948 | ||
949 | case MFF_ARP_TPA: | |
81a76618 | 950 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
951 | break; |
952 | ||
953 | case MFF_ARP_SHA: | |
954 | case MFF_ND_SLL: | |
81a76618 | 955 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
956 | break; |
957 | ||
958 | case MFF_ARP_THA: | |
959 | case MFF_ND_TLL: | |
81a76618 | 960 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
961 | break; |
962 | ||
963 | case MFF_TCP_SRC: | |
6a885fd0 | 964 | case MFF_UDP_SRC: |
0d56eaf2 | 965 | case MFF_SCTP_SRC: |
81a76618 | 966 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
967 | break; |
968 | ||
71baec06 | 969 | case MFF_TCP_DST: |
6a885fd0 | 970 | case MFF_UDP_DST: |
0d56eaf2 | 971 | case MFF_SCTP_DST: |
81a76618 | 972 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
973 | break; |
974 | ||
dc235f7f JR |
975 | case MFF_TCP_FLAGS: |
976 | match_set_tcp_flags(match, value->be16); | |
977 | break; | |
978 | ||
268a95e0 BP |
979 | case MFF_ICMPV4_TYPE: |
980 | case MFF_ICMPV6_TYPE: | |
81a76618 | 981 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
982 | break; |
983 | ||
268a95e0 BP |
984 | case MFF_ICMPV4_CODE: |
985 | case MFF_ICMPV6_CODE: | |
81a76618 | 986 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
987 | break; |
988 | ||
989 | case MFF_ND_TARGET: | |
81a76618 | 990 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
991 | break; |
992 | ||
993 | case MFF_N_IDS: | |
994 | default: | |
428b2edd | 995 | OVS_NOT_REACHED(); |
6a885fd0 BP |
996 | } |
997 | } | |
998 | ||
5a0a5702 GS |
999 | /* Unwildcard 'mask' member field described by 'mf'. The caller is |
1000 | * responsible for ensuring that 'mask' meets 'mf''s prerequisites. */ | |
1001 | void | |
1002 | mf_mask_field(const struct mf_field *mf, struct flow *mask) | |
1003 | { | |
4531547f JG |
1004 | union mf_value exact_match_mask; |
1005 | ||
1006 | memset(&exact_match_mask, 0xff, sizeof exact_match_mask); | |
5a0a5702 GS |
1007 | |
1008 | /* For MFF_DL_VLAN, we cannot send a all 1's to flow_set_dl_vlan() | |
1009 | * as that will be considered as OFP10_VLAN_NONE. So consider it as a | |
1010 | * special case. For the rest, calling mf_set_flow_value() is good | |
1011 | * enough. */ | |
1012 | if (mf->id == MFF_DL_VLAN) { | |
1013 | flow_set_dl_vlan(mask, htons(VLAN_VID_MASK)); | |
1014 | } else { | |
1015 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
1016 | } | |
1017 | } | |
1018 | ||
4ede8c79 JG |
1019 | static int |
1020 | field_len(const struct mf_field *mf, const union mf_value *value_) | |
1021 | { | |
1022 | const uint8_t *value = &value_->u8; | |
1023 | int i; | |
1024 | ||
1025 | if (!mf->variable_len) { | |
1026 | return mf->n_bytes; | |
1027 | } | |
1028 | ||
1029 | if (!value) { | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | for (i = 0; i < mf->n_bytes; i++) { | |
1034 | if (value[i] != 0) { | |
1035 | break; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | return mf->n_bytes - i; | |
1040 | } | |
1041 | ||
1042 | /* Returns the effective length of the field. For fixed length fields, | |
1043 | * this is just the defined length. For variable length fields, it is | |
1044 | * the minimum size encoding that retains the same meaning (i.e. | |
1045 | * discarding leading zeros). */ | |
1046 | int | |
1047 | mf_field_len(const struct mf_field *mf, const union mf_value *value, | |
1048 | const union mf_value *mask) | |
1049 | { | |
1050 | int len, mask_len; | |
1051 | ||
1052 | len = field_len(mf, value); | |
1053 | if (mask && !is_all_ones(mask, mf->n_bytes)) { | |
1054 | mask_len = field_len(mf, mask); | |
1055 | len = MAX(len, mask_len); | |
1056 | } | |
1057 | ||
1058 | return len; | |
1059 | } | |
1060 | ||
910fb1d8 JP |
1061 | /* Sets 'flow' member field described by 'mf' to 'value'. The caller is |
1062 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/ | |
28da1f8f BP |
1063 | void |
1064 | mf_set_flow_value(const struct mf_field *mf, | |
1065 | const union mf_value *value, struct flow *flow) | |
1066 | { | |
1067 | switch (mf->id) { | |
a79f29f2 AZ |
1068 | case MFF_DP_HASH: |
1069 | flow->dp_hash = ntohl(value->be32); | |
1070 | break; | |
1071 | case MFF_RECIRC_ID: | |
1072 | flow->recirc_id = ntohl(value->be32); | |
1073 | break; | |
18080541 BP |
1074 | case MFF_CONJ_ID: |
1075 | flow->conj_id = ntohl(value->be32); | |
1076 | break; | |
28da1f8f | 1077 | case MFF_TUN_ID: |
296e07ac | 1078 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 1079 | break; |
4fe3445a PS |
1080 | case MFF_TUN_SRC: |
1081 | flow->tunnel.ip_src = value->be32; | |
1082 | break; | |
1083 | case MFF_TUN_DST: | |
1084 | flow->tunnel.ip_dst = value->be32; | |
1085 | break; | |
1086 | case MFF_TUN_FLAGS: | |
1087 | flow->tunnel.flags = ntohs(value->be16); | |
1088 | break; | |
ac6073e3 MC |
1089 | case MFF_TUN_GBP_ID: |
1090 | flow->tunnel.gbp_id = value->be16; | |
1091 | break; | |
1092 | case MFF_TUN_GBP_FLAGS: | |
1093 | flow->tunnel.gbp_flags = value->u8; | |
1094 | break; | |
4fe3445a PS |
1095 | case MFF_TUN_TOS: |
1096 | flow->tunnel.ip_tos = value->u8; | |
1097 | break; | |
1098 | case MFF_TUN_TTL: | |
1099 | flow->tunnel.ip_ttl = value->u8; | |
1100 | break; | |
1101 | ||
969fc56c JS |
1102 | case MFF_METADATA: |
1103 | flow->metadata = value->be64; | |
1104 | break; | |
28da1f8f BP |
1105 | |
1106 | case MFF_IN_PORT: | |
4e022ec0 | 1107 | flow->in_port.ofp_port = u16_to_ofp(ntohs(value->be16)); |
28da1f8f BP |
1108 | break; |
1109 | ||
c61f3870 BP |
1110 | case MFF_IN_PORT_OXM: |
1111 | ofputil_port_from_ofp11(value->be32, &flow->in_port.ofp_port); | |
1112 | break; | |
1113 | case MFF_ACTSET_OUTPUT: | |
1114 | ofputil_port_from_ofp11(value->be32, &flow->actset_output); | |
72333065 | 1115 | break; |
72333065 | 1116 | |
1b567fb9 AA |
1117 | case MFF_SKB_PRIORITY: |
1118 | flow->skb_priority = ntohl(value->be32); | |
1119 | break; | |
1120 | ||
1362e248 JG |
1121 | case MFF_PKT_MARK: |
1122 | flow->pkt_mark = ntohl(value->be32); | |
1b567fb9 AA |
1123 | break; |
1124 | ||
0d7e2fe4 | 1125 | CASE_MFF_REGS: |
28da1f8f BP |
1126 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
1127 | break; | |
28da1f8f | 1128 | |
79fe0f46 BP |
1129 | CASE_MFF_XREGS: |
1130 | flow_set_xreg(flow, mf->id - MFF_XREG0, ntohll(value->be64)); | |
1131 | break; | |
1132 | ||
28da1f8f BP |
1133 | case MFF_ETH_SRC: |
1134 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
1135 | break; | |
1136 | ||
1137 | case MFF_ETH_DST: | |
b5a36e38 | 1138 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
1139 | break; |
1140 | ||
1141 | case MFF_ETH_TYPE: | |
1142 | flow->dl_type = value->be16; | |
1143 | break; | |
1144 | ||
1145 | case MFF_VLAN_TCI: | |
1146 | flow->vlan_tci = value->be16; | |
1147 | break; | |
1148 | ||
441c57a9 | 1149 | case MFF_DL_VLAN: |
fb0451d9 | 1150 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 1151 | break; |
cc34bc8c BP |
1152 | case MFF_VLAN_VID: |
1153 | flow_set_vlan_vid(flow, value->be16); | |
1154 | break; | |
28da1f8f | 1155 | |
441c57a9 | 1156 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1157 | case MFF_VLAN_PCP: |
28da1f8f BP |
1158 | flow_set_vlan_pcp(flow, value->u8); |
1159 | break; | |
1160 | ||
b02475c5 | 1161 | case MFF_MPLS_LABEL: |
8bfd0fda | 1162 | flow_set_mpls_label(flow, 0, value->be32); |
b02475c5 SH |
1163 | break; |
1164 | ||
1165 | case MFF_MPLS_TC: | |
8bfd0fda | 1166 | flow_set_mpls_tc(flow, 0, value->u8); |
b02475c5 SH |
1167 | break; |
1168 | ||
1169 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1170 | flow_set_mpls_bos(flow, 0, value->u8); |
1171 | break; | |
b02475c5 | 1172 | |
28da1f8f BP |
1173 | case MFF_IPV4_SRC: |
1174 | flow->nw_src = value->be32; | |
1175 | break; | |
1176 | ||
1177 | case MFF_IPV4_DST: | |
1178 | flow->nw_dst = value->be32; | |
1179 | break; | |
1180 | ||
1181 | case MFF_IPV6_SRC: | |
1182 | flow->ipv6_src = value->ipv6; | |
1183 | break; | |
1184 | ||
1185 | case MFF_IPV6_DST: | |
1186 | flow->ipv6_dst = value->ipv6; | |
1187 | break; | |
1188 | ||
1189 | case MFF_IPV6_LABEL: | |
88cc95c1 | 1190 | flow->ipv6_label = value->be32 & htonl(IPV6_LABEL_MASK); |
28da1f8f BP |
1191 | break; |
1192 | ||
1193 | case MFF_IP_PROTO: | |
1194 | flow->nw_proto = value->u8; | |
1195 | break; | |
1196 | ||
1197 | case MFF_IP_DSCP: | |
1198 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1199 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1200 | break; | |
1201 | ||
1638b906 BP |
1202 | case MFF_IP_DSCP_SHIFTED: |
1203 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1204 | flow->nw_tos |= value->u8 << 2; | |
1205 | break; | |
1206 | ||
28da1f8f BP |
1207 | case MFF_IP_ECN: |
1208 | flow->nw_tos &= ~IP_ECN_MASK; | |
1209 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1210 | break; | |
1211 | ||
1212 | case MFF_IP_TTL: | |
1213 | flow->nw_ttl = value->u8; | |
1214 | break; | |
1215 | ||
1216 | case MFF_IP_FRAG: | |
c8abb8af | 1217 | flow->nw_frag = value->u8 & FLOW_NW_FRAG_MASK; |
28da1f8f BP |
1218 | break; |
1219 | ||
1220 | case MFF_ARP_OP: | |
1221 | flow->nw_proto = ntohs(value->be16); | |
1222 | break; | |
1223 | ||
1224 | case MFF_ARP_SPA: | |
1225 | flow->nw_src = value->be32; | |
1226 | break; | |
1227 | ||
1228 | case MFF_ARP_TPA: | |
1229 | flow->nw_dst = value->be32; | |
1230 | break; | |
1231 | ||
1232 | case MFF_ARP_SHA: | |
1233 | case MFF_ND_SLL: | |
1234 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1235 | break; | |
1236 | ||
1237 | case MFF_ARP_THA: | |
1238 | case MFF_ND_TLL: | |
1239 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1240 | break; | |
1241 | ||
1242 | case MFF_TCP_SRC: | |
1243 | case MFF_UDP_SRC: | |
0d56eaf2 | 1244 | case MFF_SCTP_SRC: |
28da1f8f BP |
1245 | flow->tp_src = value->be16; |
1246 | break; | |
1247 | ||
1248 | case MFF_TCP_DST: | |
1249 | case MFF_UDP_DST: | |
0d56eaf2 | 1250 | case MFF_SCTP_DST: |
28da1f8f BP |
1251 | flow->tp_dst = value->be16; |
1252 | break; | |
1253 | ||
dc235f7f JR |
1254 | case MFF_TCP_FLAGS: |
1255 | flow->tcp_flags = value->be16; | |
1256 | break; | |
1257 | ||
28da1f8f BP |
1258 | case MFF_ICMPV4_TYPE: |
1259 | case MFF_ICMPV6_TYPE: | |
1260 | flow->tp_src = htons(value->u8); | |
1261 | break; | |
1262 | ||
1263 | case MFF_ICMPV4_CODE: | |
1264 | case MFF_ICMPV6_CODE: | |
1265 | flow->tp_dst = htons(value->u8); | |
1266 | break; | |
1267 | ||
1268 | case MFF_ND_TARGET: | |
1269 | flow->nd_target = value->ipv6; | |
1270 | break; | |
1271 | ||
1272 | case MFF_N_IDS: | |
1273 | default: | |
428b2edd | 1274 | OVS_NOT_REACHED(); |
28da1f8f BP |
1275 | } |
1276 | } | |
1277 | ||
7eb4b1f1 BP |
1278 | /* Consider each of 'src', 'mask', and 'dst' as if they were arrays of 8*n |
1279 | * bits. Then, for each 0 <= i < 8 * n such that mask[i] == 1, sets dst[i] = | |
1280 | * src[i]. */ | |
1281 | static void | |
1282 | apply_mask(const uint8_t *src, const uint8_t *mask, uint8_t *dst, size_t n) | |
1283 | { | |
1284 | size_t i; | |
1285 | ||
1286 | for (i = 0; i < n; i++) { | |
1287 | dst[i] = (src[i] & mask[i]) | (dst[i] & ~mask[i]); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* Sets 'flow' member field described by 'field' to 'value', except that bits | |
1292 | * for which 'mask' has a 0-bit keep their existing values. The caller is | |
1293 | * responsible for ensuring that 'flow' meets 'field''s prerequisites.*/ | |
1294 | void | |
1295 | mf_set_flow_value_masked(const struct mf_field *field, | |
1296 | const union mf_value *value, | |
1297 | const union mf_value *mask, | |
1298 | struct flow *flow) | |
1299 | { | |
1300 | union mf_value tmp; | |
1301 | ||
1302 | mf_get_value(field, flow, &tmp); | |
1303 | apply_mask((const uint8_t *) value, (const uint8_t *) mask, | |
1304 | (uint8_t *) &tmp, field->n_bytes); | |
1305 | mf_set_flow_value(field, &tmp, flow); | |
1306 | } | |
1307 | ||
ccbe50f8 BP |
1308 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1309 | * | |
1310 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1311 | * prerequisites. */ | |
1312 | bool | |
1313 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1314 | { | |
1315 | union mf_value value; | |
1316 | ||
1317 | mf_get_value(mf, flow, &value); | |
53cb9c3e | 1318 | return is_all_zeros(&value, mf->n_bytes); |
ccbe50f8 BP |
1319 | } |
1320 | ||
81a76618 | 1321 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1322 | * |
81a76618 | 1323 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1324 | * prerequisites. */ |
1325 | void | |
81a76618 | 1326 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1327 | { |
1328 | switch (mf->id) { | |
a79f29f2 AZ |
1329 | case MFF_DP_HASH: |
1330 | match->flow.dp_hash = 0; | |
1331 | match->wc.masks.dp_hash = 0; | |
1332 | break; | |
1333 | case MFF_RECIRC_ID: | |
1334 | match->flow.recirc_id = 0; | |
1335 | match->wc.masks.recirc_id = 0; | |
1336 | break; | |
18080541 BP |
1337 | case MFF_CONJ_ID: |
1338 | match->flow.conj_id = 0; | |
1339 | match->wc.masks.conj_id = 0; | |
1340 | break; | |
6a885fd0 | 1341 | case MFF_TUN_ID: |
81a76618 | 1342 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1343 | break; |
4fe3445a PS |
1344 | case MFF_TUN_SRC: |
1345 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1346 | break; | |
1347 | case MFF_TUN_DST: | |
1348 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1349 | break; | |
1350 | case MFF_TUN_FLAGS: | |
1351 | match_set_tun_flags_masked(match, 0, 0); | |
1352 | break; | |
ac6073e3 MC |
1353 | case MFF_TUN_GBP_ID: |
1354 | match_set_tun_gbp_id_masked(match, 0, 0); | |
1355 | break; | |
1356 | case MFF_TUN_GBP_FLAGS: | |
1357 | match_set_tun_gbp_flags_masked(match, 0, 0); | |
1358 | break; | |
4fe3445a PS |
1359 | case MFF_TUN_TOS: |
1360 | match_set_tun_tos_masked(match, 0, 0); | |
1361 | break; | |
1362 | case MFF_TUN_TTL: | |
1363 | match_set_tun_ttl_masked(match, 0, 0); | |
1364 | break; | |
1365 | ||
969fc56c | 1366 | case MFF_METADATA: |
81a76618 | 1367 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
801d2b2a | 1368 | break; |
6a885fd0 BP |
1369 | |
1370 | case MFF_IN_PORT: | |
72333065 | 1371 | case MFF_IN_PORT_OXM: |
4e022ec0 AW |
1372 | match->flow.in_port.ofp_port = 0; |
1373 | match->wc.masks.in_port.ofp_port = 0; | |
6a885fd0 | 1374 | break; |
c61f3870 BP |
1375 | case MFF_ACTSET_OUTPUT: |
1376 | match->flow.actset_output = 0; | |
1377 | match->wc.masks.actset_output = 0; | |
1378 | break; | |
6a885fd0 | 1379 | |
1b567fb9 AA |
1380 | case MFF_SKB_PRIORITY: |
1381 | match->flow.skb_priority = 0; | |
1382 | match->wc.masks.skb_priority = 0; | |
1383 | break; | |
1384 | ||
1362e248 JG |
1385 | case MFF_PKT_MARK: |
1386 | match->flow.pkt_mark = 0; | |
1387 | match->wc.masks.pkt_mark = 0; | |
1b567fb9 AA |
1388 | break; |
1389 | ||
0d7e2fe4 | 1390 | CASE_MFF_REGS: |
81a76618 | 1391 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1392 | break; |
6a885fd0 | 1393 | |
79fe0f46 BP |
1394 | CASE_MFF_XREGS: |
1395 | match_set_xreg_masked(match, mf->id - MFF_XREG0, 0, 0); | |
1396 | break; | |
1397 | ||
6a885fd0 | 1398 | case MFF_ETH_SRC: |
81a76618 BP |
1399 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1400 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1401 | break; |
1402 | ||
1403 | case MFF_ETH_DST: | |
81a76618 BP |
1404 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1405 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1406 | break; |
1407 | ||
1408 | case MFF_ETH_TYPE: | |
81a76618 BP |
1409 | match->flow.dl_type = htons(0); |
1410 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1411 | break; |
1412 | ||
1413 | case MFF_VLAN_TCI: | |
81a76618 | 1414 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1415 | break; |
1416 | ||
441c57a9 | 1417 | case MFF_DL_VLAN: |
cc34bc8c | 1418 | case MFF_VLAN_VID: |
81a76618 | 1419 | match_set_any_vid(match); |
6a885fd0 BP |
1420 | break; |
1421 | ||
441c57a9 | 1422 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1423 | case MFF_VLAN_PCP: |
81a76618 | 1424 | match_set_any_pcp(match); |
6a885fd0 BP |
1425 | break; |
1426 | ||
b02475c5 | 1427 | case MFF_MPLS_LABEL: |
8bfd0fda | 1428 | match_set_any_mpls_label(match, 0); |
b02475c5 SH |
1429 | break; |
1430 | ||
1431 | case MFF_MPLS_TC: | |
8bfd0fda | 1432 | match_set_any_mpls_tc(match, 0); |
b02475c5 SH |
1433 | break; |
1434 | ||
1435 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1436 | match_set_any_mpls_bos(match, 0); |
1437 | break; | |
b02475c5 | 1438 | |
6a885fd0 BP |
1439 | case MFF_IPV4_SRC: |
1440 | case MFF_ARP_SPA: | |
81a76618 | 1441 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1442 | break; |
1443 | ||
1444 | case MFF_IPV4_DST: | |
1445 | case MFF_ARP_TPA: | |
81a76618 | 1446 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1447 | break; |
1448 | ||
1449 | case MFF_IPV6_SRC: | |
81a76618 BP |
1450 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1451 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1452 | break; |
1453 | ||
1454 | case MFF_IPV6_DST: | |
81a76618 BP |
1455 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1456 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1457 | break; |
1458 | ||
fa8223b7 | 1459 | case MFF_IPV6_LABEL: |
81a76618 BP |
1460 | match->wc.masks.ipv6_label = htonl(0); |
1461 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1462 | break; |
1463 | ||
6a885fd0 | 1464 | case MFF_IP_PROTO: |
81a76618 BP |
1465 | match->wc.masks.nw_proto = 0; |
1466 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1467 | break; |
1468 | ||
530180fd | 1469 | case MFF_IP_DSCP: |
1638b906 | 1470 | case MFF_IP_DSCP_SHIFTED: |
81a76618 BP |
1471 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1472 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1473 | break; |
1474 | ||
530180fd | 1475 | case MFF_IP_ECN: |
81a76618 BP |
1476 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1477 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1478 | break; |
1479 | ||
a61680c6 | 1480 | case MFF_IP_TTL: |
81a76618 BP |
1481 | match->wc.masks.nw_ttl = 0; |
1482 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1483 | break; |
1484 | ||
7257b535 | 1485 | case MFF_IP_FRAG: |
81a76618 BP |
1486 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1487 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1488 | break; |
1489 | ||
1490 | case MFF_ARP_OP: | |
81a76618 BP |
1491 | match->wc.masks.nw_proto = 0; |
1492 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1493 | break; |
1494 | ||
1495 | case MFF_ARP_SHA: | |
1496 | case MFF_ND_SLL: | |
81a76618 BP |
1497 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1498 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1499 | break; |
1500 | ||
1501 | case MFF_ARP_THA: | |
1502 | case MFF_ND_TLL: | |
81a76618 BP |
1503 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1504 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1505 | break; |
1506 | ||
1507 | case MFF_TCP_SRC: | |
1508 | case MFF_UDP_SRC: | |
0d56eaf2 | 1509 | case MFF_SCTP_SRC: |
268a95e0 BP |
1510 | case MFF_ICMPV4_TYPE: |
1511 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1512 | match->wc.masks.tp_src = htons(0); |
1513 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1514 | break; |
1515 | ||
1516 | case MFF_TCP_DST: | |
1517 | case MFF_UDP_DST: | |
0d56eaf2 | 1518 | case MFF_SCTP_DST: |
268a95e0 BP |
1519 | case MFF_ICMPV4_CODE: |
1520 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1521 | match->wc.masks.tp_dst = htons(0); |
1522 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1523 | break; |
1524 | ||
dc235f7f JR |
1525 | case MFF_TCP_FLAGS: |
1526 | match->wc.masks.tcp_flags = htons(0); | |
1527 | match->flow.tcp_flags = htons(0); | |
1528 | break; | |
1529 | ||
6a885fd0 | 1530 | case MFF_ND_TARGET: |
81a76618 BP |
1531 | memset(&match->wc.masks.nd_target, 0, |
1532 | sizeof match->wc.masks.nd_target); | |
1533 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1534 | break; |
1535 | ||
1536 | case MFF_N_IDS: | |
1537 | default: | |
428b2edd | 1538 | OVS_NOT_REACHED(); |
6a885fd0 BP |
1539 | } |
1540 | } | |
1541 | ||
81a76618 | 1542 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1543 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1544 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1545 | * 0-bit indicating a don't-care. | |
1546 | * | |
1547 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1548 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1549 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1550 | * |
1551 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1552 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
db0b6c29 | 1553 | enum ofputil_protocol |
6a885fd0 BP |
1554 | mf_set(const struct mf_field *mf, |
1555 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1556 | struct match *match) |
6a885fd0 | 1557 | { |
53cb9c3e | 1558 | if (!mask || is_all_ones(mask, mf->n_bytes)) { |
81a76618 | 1559 | mf_set_value(mf, value, match); |
a4ce8b25 | 1560 | return mf->usable_protocols_exact; |
53cb9c3e | 1561 | } else if (is_all_zeros(mask, mf->n_bytes)) { |
81a76618 | 1562 | mf_set_wild(mf, match); |
db0b6c29 | 1563 | return OFPUTIL_P_ANY; |
6a885fd0 BP |
1564 | } |
1565 | ||
1566 | switch (mf->id) { | |
a79f29f2 | 1567 | case MFF_RECIRC_ID: |
18080541 | 1568 | case MFF_CONJ_ID: |
6a885fd0 | 1569 | case MFF_IN_PORT: |
72333065 | 1570 | case MFF_IN_PORT_OXM: |
c61f3870 | 1571 | case MFF_ACTSET_OUTPUT: |
1b567fb9 | 1572 | case MFF_SKB_PRIORITY: |
6a885fd0 | 1573 | case MFF_ETH_TYPE: |
441c57a9 BP |
1574 | case MFF_DL_VLAN: |
1575 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1576 | case MFF_VLAN_PCP: |
b02475c5 SH |
1577 | case MFF_MPLS_LABEL: |
1578 | case MFF_MPLS_TC: | |
1579 | case MFF_MPLS_BOS: | |
6a885fd0 | 1580 | case MFF_IP_PROTO: |
a61680c6 | 1581 | case MFF_IP_TTL: |
530180fd | 1582 | case MFF_IP_DSCP: |
1638b906 | 1583 | case MFF_IP_DSCP_SHIFTED: |
530180fd | 1584 | case MFF_IP_ECN: |
6a885fd0 | 1585 | case MFF_ARP_OP: |
268a95e0 BP |
1586 | case MFF_ICMPV4_TYPE: |
1587 | case MFF_ICMPV4_CODE: | |
1588 | case MFF_ICMPV6_TYPE: | |
1589 | case MFF_ICMPV6_CODE: | |
af69bf19 | 1590 | return OFPUTIL_P_NONE; |
6a885fd0 | 1591 | |
a79f29f2 AZ |
1592 | case MFF_DP_HASH: |
1593 | match_set_dp_hash_masked(match, ntohl(value->be32), ntohl(mask->be32)); | |
1594 | break; | |
6a885fd0 | 1595 | case MFF_TUN_ID: |
81a76618 | 1596 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1597 | break; |
4fe3445a PS |
1598 | case MFF_TUN_SRC: |
1599 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1600 | break; | |
1601 | case MFF_TUN_DST: | |
1602 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1603 | break; | |
1604 | case MFF_TUN_FLAGS: | |
1605 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1606 | break; | |
ac6073e3 MC |
1607 | case MFF_TUN_GBP_ID: |
1608 | match_set_tun_gbp_id_masked(match, value->be16, mask->be16); | |
1609 | break; | |
1610 | case MFF_TUN_GBP_FLAGS: | |
1611 | match_set_tun_gbp_flags_masked(match, value->u8, mask->u8); | |
1612 | break; | |
4fe3445a PS |
1613 | case MFF_TUN_TTL: |
1614 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1615 | break; | |
1616 | case MFF_TUN_TOS: | |
1617 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1618 | break; | |
1619 | ||
969fc56c | 1620 | case MFF_METADATA: |
81a76618 | 1621 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1622 | break; |
6a885fd0 | 1623 | |
0d7e2fe4 | 1624 | CASE_MFF_REGS: |
81a76618 BP |
1625 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1626 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 | 1627 | break; |
ac923e91 | 1628 | |
79fe0f46 BP |
1629 | CASE_MFF_XREGS: |
1630 | match_set_xreg_masked(match, mf->id - MFF_XREG0, | |
1631 | ntohll(value->be64), ntohll(mask->be64)); | |
1632 | break; | |
1633 | ||
ac923e91 JG |
1634 | case MFF_PKT_MARK: |
1635 | match_set_pkt_mark_masked(match, ntohl(value->be32), | |
1636 | ntohl(mask->be32)); | |
1637 | break; | |
6a885fd0 BP |
1638 | |
1639 | case MFF_ETH_DST: | |
81a76618 | 1640 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1641 | break; |
1642 | ||
1643 | case MFF_ETH_SRC: | |
81a76618 | 1644 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1645 | break; |
1646 | ||
e878338b SH |
1647 | case MFF_ARP_SHA: |
1648 | case MFF_ND_SLL: | |
81a76618 | 1649 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1650 | break; |
1651 | ||
1652 | case MFF_ARP_THA: | |
1653 | case MFF_ND_TLL: | |
81a76618 | 1654 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1655 | break; |
1656 | ||
6a885fd0 | 1657 | case MFF_VLAN_TCI: |
81a76618 | 1658 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1659 | break; |
1660 | ||
cc34bc8c | 1661 | case MFF_VLAN_VID: |
81a76618 | 1662 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1663 | break; |
1664 | ||
6a885fd0 | 1665 | case MFF_IPV4_SRC: |
81a76618 | 1666 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1667 | break; |
6a885fd0 BP |
1668 | |
1669 | case MFF_IPV4_DST: | |
81a76618 | 1670 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1671 | break; |
6a885fd0 BP |
1672 | |
1673 | case MFF_IPV6_SRC: | |
81a76618 | 1674 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1675 | break; |
1676 | ||
1677 | case MFF_IPV6_DST: | |
81a76618 | 1678 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1679 | break; |
1680 | ||
32455024 SH |
1681 | case MFF_IPV6_LABEL: |
1682 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1683 | mf_set_value(mf, value, match); |
32455024 | 1684 | } else { |
81a76618 | 1685 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1686 | } |
1687 | break; | |
1688 | ||
47284b1f | 1689 | case MFF_ND_TARGET: |
81a76618 | 1690 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1691 | break; |
1692 | ||
7257b535 | 1693 | case MFF_IP_FRAG: |
81a76618 | 1694 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1695 | break; |
1696 | ||
6a885fd0 | 1697 | case MFF_ARP_SPA: |
81a76618 | 1698 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1699 | break; |
6a885fd0 BP |
1700 | |
1701 | case MFF_ARP_TPA: | |
81a76618 | 1702 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1703 | break; |
6a885fd0 | 1704 | |
73f33563 BP |
1705 | case MFF_TCP_SRC: |
1706 | case MFF_UDP_SRC: | |
0d56eaf2 | 1707 | case MFF_SCTP_SRC: |
81a76618 | 1708 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1709 | break; |
1710 | ||
1711 | case MFF_TCP_DST: | |
1712 | case MFF_UDP_DST: | |
0d56eaf2 | 1713 | case MFF_SCTP_DST: |
81a76618 | 1714 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1715 | break; |
1716 | ||
dc235f7f JR |
1717 | case MFF_TCP_FLAGS: |
1718 | match_set_tcp_flags_masked(match, value->be16, mask->be16); | |
1719 | break; | |
1720 | ||
6a885fd0 BP |
1721 | case MFF_N_IDS: |
1722 | default: | |
428b2edd | 1723 | OVS_NOT_REACHED(); |
6a885fd0 | 1724 | } |
db0b6c29 | 1725 | |
a4ce8b25 BP |
1726 | return ((mf->usable_protocols_bitwise == mf->usable_protocols_cidr |
1727 | || ip_is_cidr(mask->be32)) | |
1728 | ? mf->usable_protocols_cidr | |
1729 | : mf->usable_protocols_bitwise); | |
6a885fd0 BP |
1730 | } |
1731 | ||
816fd533 BP |
1732 | static enum ofperr |
1733 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1734 | const char *type) | |
6a885fd0 | 1735 | { |
816fd533 BP |
1736 | if (!sf->field) { |
1737 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
9e404d1e | 1738 | return OFPERR_OFPBAC_BAD_SET_TYPE; |
816fd533 BP |
1739 | } else if (!sf->n_bits) { |
1740 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
9e404d1e | 1741 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1742 | } else if (sf->ofs >= sf->field->n_bits) { |
1743 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1744 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1745 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1746 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { |
1747 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1748 | "of %s field %s", sf->ofs, sf->n_bits, | |
1749 | sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1750 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1751 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { |
1752 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1753 | type, sf->field->name); | |
9e404d1e | 1754 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
6a885fd0 | 1755 | } else { |
816fd533 BP |
1756 | return 0; |
1757 | } | |
816fd533 | 1758 | } |
6a885fd0 | 1759 | |
816fd533 BP |
1760 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1761 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1762 | * ofp_mkerr()). */ | |
1763 | enum ofperr | |
1764 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1765 | { | |
1766 | return mf_check__(sf, flow, "source"); | |
1767 | } | |
6a885fd0 | 1768 | |
816fd533 BP |
1769 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1770 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1771 | * ofp_mkerr()). */ | |
1772 | enum ofperr | |
1773 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1774 | { | |
1775 | int error = mf_check__(sf, flow, "destination"); | |
1776 | if (!error && !sf->field->writable) { | |
1777 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1778 | sf->field->name); | |
9e404d1e | 1779 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
6a885fd0 | 1780 | } |
816fd533 | 1781 | return error; |
6a885fd0 BP |
1782 | } |
1783 | ||
81a76618 | 1784 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1785 | * 'value' and 'mask', respectively. */ |
1786 | void | |
81a76618 | 1787 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1788 | union mf_value *value, union mf_value *mask) |
1789 | { | |
81a76618 BP |
1790 | mf_get_value(mf, &match->flow, value); |
1791 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1792 | } |
1793 | ||
6a885fd0 BP |
1794 | static char * |
1795 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1796 | uint8_t *valuep, uint8_t *maskp) | |
1797 | { | |
6a885fd0 | 1798 | char *tail; |
1734bf29 JG |
1799 | const char *err_str = ""; |
1800 | int err; | |
6a885fd0 | 1801 | |
1734bf29 JG |
1802 | err = parse_int_string(s, valuep, mf->n_bytes, &tail); |
1803 | if (err || (*tail != '\0' && *tail != '/')) { | |
1804 | err_str = "value"; | |
6a885fd0 BP |
1805 | goto syntax_error; |
1806 | } | |
1807 | ||
1808 | if (*tail == '/') { | |
1734bf29 JG |
1809 | err = parse_int_string(tail + 1, maskp, mf->n_bytes, &tail); |
1810 | if (err || *tail != '\0') { | |
1811 | err_str = "mask"; | |
6a885fd0 BP |
1812 | goto syntax_error; |
1813 | } | |
1814 | } else { | |
1734bf29 | 1815 | memset(maskp, 0xff, mf->n_bytes); |
6a885fd0 BP |
1816 | } |
1817 | ||
6a885fd0 BP |
1818 | return NULL; |
1819 | ||
1820 | syntax_error: | |
1734bf29 JG |
1821 | if (err == ERANGE) { |
1822 | return xasprintf("%s: %s too large for %u-byte field %s", | |
1823 | s, err_str, mf->n_bytes, mf->name); | |
1824 | } else { | |
1825 | return xasprintf("%s: bad syntax for %s %s", s, mf->name, err_str); | |
1826 | } | |
6a885fd0 BP |
1827 | } |
1828 | ||
1829 | static char * | |
1830 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1831 | uint8_t mac[ETH_ADDR_LEN], | |
1832 | uint8_t mask[ETH_ADDR_LEN]) | |
1833 | { | |
279fb135 | 1834 | int n; |
6a885fd0 | 1835 | |
279fb135 | 1836 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 | 1837 | |
279fb135 | 1838 | n = -1; |
c2c28dfd | 1839 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n) |
279fb135 | 1840 | && n == strlen(s)) { |
6a885fd0 BP |
1841 | memset(mask, 0xff, ETH_ADDR_LEN); |
1842 | return NULL; | |
279fb135 | 1843 | } |
6a885fd0 | 1844 | |
279fb135 | 1845 | n = -1; |
c2c28dfd BP |
1846 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n", |
1847 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n) | |
279fb135 BP |
1848 | && n == strlen(s)) { |
1849 | return NULL; | |
6a885fd0 | 1850 | } |
279fb135 BP |
1851 | |
1852 | return xasprintf("%s: invalid Ethernet address", s); | |
6a885fd0 BP |
1853 | } |
1854 | ||
1855 | static char * | |
1856 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1857 | ovs_be32 *ip, ovs_be32 *mask) | |
1858 | { | |
1859 | int prefix; | |
1860 | ||
cb22974d | 1861 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 | 1862 | |
c2c28dfd BP |
1863 | if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT, |
1864 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) { | |
6a885fd0 | 1865 | /* OK. */ |
c2c28dfd | 1866 | } else if (ovs_scan(s, IP_SCAN_FMT"/%d", IP_SCAN_ARGS(ip), &prefix)) { |
6a885fd0 | 1867 | if (prefix <= 0 || prefix > 32) { |
86f35fb5 | 1868 | return xasprintf("%s: network prefix bits not between 0 and " |
6a885fd0 | 1869 | "32", s); |
6a885fd0 | 1870 | } |
86f35fb5 | 1871 | *mask = be32_prefix_mask(prefix); |
c2c28dfd | 1872 | } else if (ovs_scan(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) { |
b8266395 | 1873 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
1874 | } else { |
1875 | return xasprintf("%s: invalid IP address", s); | |
1876 | } | |
1877 | return NULL; | |
1878 | } | |
1879 | ||
1880 | static char * | |
1881 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1882 | struct in6_addr *value, struct in6_addr *mask) | |
1883 | { | |
1884 | char *str = xstrdup(s); | |
1885 | char *save_ptr = NULL; | |
1886 | const char *name, *netmask; | |
1887 | int retval; | |
1888 | ||
cb22974d | 1889 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
1890 | |
1891 | name = strtok_r(str, "/", &save_ptr); | |
1892 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1893 | if (retval) { | |
1894 | char *err; | |
1895 | ||
1896 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1897 | free(str); | |
1898 | ||
1899 | return err; | |
1900 | } | |
1901 | ||
1902 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1903 | if (netmask) { | |
ff0b06ee BP |
1904 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
1905 | int prefix = atoi(netmask); | |
1906 | if (prefix <= 0 || prefix > 128) { | |
1907 | free(str); | |
1908 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
1909 | } else { | |
1910 | *mask = ipv6_create_mask(prefix); | |
1911 | } | |
6a885fd0 BP |
1912 | } |
1913 | } else { | |
1914 | *mask = in6addr_exact; | |
1915 | } | |
1916 | free(str); | |
1917 | ||
1918 | return NULL; | |
1919 | } | |
1920 | ||
1921 | static char * | |
1922 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
1923 | ovs_be16 *valuep, ovs_be16 *maskp) | |
1924 | { | |
4e022ec0 | 1925 | ofp_port_t port; |
6a885fd0 | 1926 | |
cb22974d | 1927 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
33ab38d9 JR |
1928 | |
1929 | if (ofputil_port_from_string(s, &port)) { | |
4e022ec0 | 1930 | *valuep = htons(ofp_to_u16(port)); |
b8266395 | 1931 | *maskp = OVS_BE16_MAX; |
6a885fd0 | 1932 | return NULL; |
6a885fd0 | 1933 | } |
33ab38d9 | 1934 | return xasprintf("%s: port value out of range for %s", s, mf->name); |
6a885fd0 BP |
1935 | } |
1936 | ||
72333065 JR |
1937 | static char * |
1938 | mf_from_ofp_port_string32(const struct mf_field *mf, const char *s, | |
1939 | ovs_be32 *valuep, ovs_be32 *maskp) | |
1940 | { | |
4e022ec0 | 1941 | ofp_port_t port; |
72333065 JR |
1942 | |
1943 | ovs_assert(mf->n_bytes == sizeof(ovs_be32)); | |
1944 | if (ofputil_port_from_string(s, &port)) { | |
1945 | *valuep = ofputil_port_to_ofp11(port); | |
b8266395 | 1946 | *maskp = OVS_BE32_MAX; |
72333065 JR |
1947 | return NULL; |
1948 | } | |
1949 | return xasprintf("%s: port value out of range for %s", s, mf->name); | |
1950 | } | |
1951 | ||
7257b535 BP |
1952 | struct frag_handling { |
1953 | const char *name; | |
1954 | uint8_t mask; | |
1955 | uint8_t value; | |
1956 | }; | |
1957 | ||
1958 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
1959 | #define A FLOW_NW_FRAG_ANY |
1960 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
1961 | /* name mask value */ |
1962 | ||
1963 | { "no", A|L, 0 }, | |
1964 | { "first", A|L, A }, | |
1965 | { "later", A|L, A|L }, | |
1966 | ||
1967 | { "no", A, 0 }, | |
1968 | { "yes", A, A }, | |
1969 | ||
1970 | { "not_later", L, 0 }, | |
1971 | { "later", L, L }, | |
1972 | #undef A | |
1973 | #undef L | |
1974 | }; | |
1975 | ||
1976 | static char * | |
1977 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
1978 | { | |
1979 | const struct frag_handling *h; | |
1980 | ||
1981 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
1982 | if (!strcasecmp(s, h->name)) { | |
1983 | /* We force the upper bits of the mask on to make mf_parse_value() | |
1984 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 1985 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
1986 | *valuep = h->value; |
1987 | return NULL; | |
1988 | } | |
1989 | } | |
1990 | ||
1991 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
1992 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
1993 | } | |
1994 | ||
4fe3445a PS |
1995 | static int |
1996 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
1997 | ovs_be16 *res) | |
1998 | { | |
1999 | uint32_t result = 0; | |
2000 | char *save_ptr = NULL; | |
2001 | char *name; | |
2002 | int rc = 0; | |
2003 | char *s = xstrdup(s_); | |
2004 | ||
2005 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
2006 | name = strtok_r(NULL, " |", &save_ptr)) { | |
2007 | int name_len; | |
2008 | unsigned long long int flags; | |
2009 | uint32_t bit; | |
4fe3445a | 2010 | |
c2c28dfd | 2011 | if (ovs_scan(name, "%lli", &flags)) { |
4fe3445a PS |
2012 | result |= flags; |
2013 | continue; | |
2014 | } | |
2015 | name_len = strlen(name); | |
2016 | for (bit = 1; bit; bit <<= 1) { | |
2017 | const char *fname = bit_to_string(bit); | |
2018 | size_t len; | |
2019 | ||
2020 | if (!fname) { | |
2021 | continue; | |
2022 | } | |
2023 | ||
2024 | len = strlen(fname); | |
2025 | if (len != name_len) { | |
2026 | continue; | |
2027 | } | |
2028 | if (!strncmp(name, fname, len)) { | |
2029 | result |= bit; | |
2030 | break; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | if (!bit) { | |
2035 | rc = -ENOENT; | |
2036 | goto out; | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | *res = htons(result); | |
2041 | out: | |
2042 | free(s); | |
2043 | return rc; | |
2044 | } | |
2045 | ||
2046 | static char * | |
b0aa8146 | 2047 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
2048 | { |
2049 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b8266395 | 2050 | *maskp = OVS_BE16_MAX; |
4fe3445a PS |
2051 | return NULL; |
2052 | } | |
2053 | ||
2054 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
c49a5e33 | 2055 | "\"csum\", \"key\")", s); |
4fe3445a PS |
2056 | } |
2057 | ||
61bf6666 JR |
2058 | static char * |
2059 | mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp) | |
2060 | { | |
2061 | uint16_t flags = 0; | |
2062 | uint16_t mask = 0; | |
2063 | uint16_t bit; | |
2064 | int n; | |
2065 | ||
2066 | if (ovs_scan(s, "%"SCNi16"/%"SCNi16"%n", &flags, &mask, &n) && !s[n]) { | |
2067 | *flagsp = htons(flags); | |
2068 | *maskp = htons(mask); | |
2069 | return NULL; | |
2070 | } | |
2071 | if (ovs_scan(s, "%"SCNi16"%n", &flags, &n) && !s[n]) { | |
2072 | *flagsp = htons(flags); | |
2073 | *maskp = OVS_BE16_MAX; | |
2074 | return NULL; | |
2075 | } | |
2076 | ||
2077 | while (*s != '\0') { | |
2078 | bool set; | |
2079 | int name_len; | |
2080 | ||
2081 | switch (*s) { | |
2082 | case '+': | |
2083 | set = true; | |
2084 | break; | |
2085 | case '-': | |
2086 | set = false; | |
2087 | break; | |
2088 | default: | |
2089 | return xasprintf("%s: TCP flag must be preceded by '+' (for SET) " | |
2090 | "or '-' (NOT SET)", s); | |
2091 | } | |
2092 | s++; | |
2093 | ||
2094 | name_len = strcspn(s,"+-"); | |
2095 | ||
2096 | for (bit = 1; bit; bit <<= 1) { | |
2097 | const char *fname = packet_tcp_flag_to_string(bit); | |
2098 | size_t len; | |
2099 | ||
2100 | if (!fname) { | |
2101 | continue; | |
2102 | } | |
2103 | ||
2104 | len = strlen(fname); | |
2105 | if (len != name_len) { | |
2106 | continue; | |
2107 | } | |
2108 | if (!strncmp(s, fname, len)) { | |
2109 | if (mask & bit) { | |
2110 | return xasprintf("%s: Each TCP flag can be specified only " | |
2111 | "once", s); | |
2112 | } | |
2113 | if (set) { | |
2114 | flags |= bit; | |
2115 | } | |
2116 | mask |= bit; | |
2117 | break; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | if (!bit) { | |
2122 | return xasprintf("%s: unknown TCP flag(s)", s); | |
2123 | } | |
2124 | s += name_len; | |
2125 | } | |
2126 | ||
2127 | *flagsp = htons(flags); | |
2128 | *maskp = htons(mask); | |
2129 | return NULL; | |
2130 | } | |
2131 | ||
2132 | ||
6a885fd0 BP |
2133 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
2134 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
2135 | char * | |
2136 | mf_parse(const struct mf_field *mf, const char *s, | |
2137 | union mf_value *value, union mf_value *mask) | |
2138 | { | |
3634dff8 BP |
2139 | char *error; |
2140 | ||
bedde04c | 2141 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
2142 | memset(value, 0, mf->n_bytes); |
2143 | memset(mask, 0, mf->n_bytes); | |
2144 | return NULL; | |
2145 | } | |
2146 | ||
2147 | switch (mf->string) { | |
2148 | case MFS_DECIMAL: | |
2149 | case MFS_HEXADECIMAL: | |
3634dff8 BP |
2150 | error = mf_from_integer_string(mf, s, |
2151 | (uint8_t *) value, (uint8_t *) mask); | |
2152 | break; | |
6a885fd0 BP |
2153 | |
2154 | case MFS_ETHERNET: | |
3634dff8 BP |
2155 | error = mf_from_ethernet_string(mf, s, value->mac, mask->mac); |
2156 | break; | |
6a885fd0 BP |
2157 | |
2158 | case MFS_IPV4: | |
3634dff8 BP |
2159 | error = mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); |
2160 | break; | |
6a885fd0 BP |
2161 | |
2162 | case MFS_IPV6: | |
3634dff8 BP |
2163 | error = mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); |
2164 | break; | |
6a885fd0 BP |
2165 | |
2166 | case MFS_OFP_PORT: | |
3634dff8 BP |
2167 | error = mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); |
2168 | break; | |
7257b535 | 2169 | |
72333065 | 2170 | case MFS_OFP_PORT_OXM: |
3634dff8 BP |
2171 | error = mf_from_ofp_port_string32(mf, s, &value->be32, &mask->be32); |
2172 | break; | |
72333065 | 2173 | |
7257b535 | 2174 | case MFS_FRAG: |
3634dff8 BP |
2175 | error = mf_from_frag_string(s, &value->u8, &mask->u8); |
2176 | break; | |
4fe3445a PS |
2177 | |
2178 | case MFS_TNL_FLAGS: | |
cb22974d | 2179 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
3634dff8 BP |
2180 | error = mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
2181 | break; | |
2182 | ||
61bf6666 JR |
2183 | case MFS_TCP_FLAGS: |
2184 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); | |
2185 | error = mf_from_tcp_flags_string(s, &value->be16, &mask->be16); | |
2186 | break; | |
2187 | ||
3634dff8 | 2188 | default: |
428b2edd | 2189 | OVS_NOT_REACHED(); |
6a885fd0 | 2190 | } |
3634dff8 BP |
2191 | |
2192 | if (!error && !mf_is_mask_valid(mf, mask)) { | |
2193 | error = xasprintf("%s: invalid mask for field %s", s, mf->name); | |
2194 | } | |
2195 | return error; | |
6a885fd0 BP |
2196 | } |
2197 | ||
2198 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2199 | * successful, otherwise a malloc()'d string describing the error. */ | |
2200 | char * | |
2201 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2202 | { | |
2203 | union mf_value mask; | |
2204 | char *error; | |
2205 | ||
2206 | error = mf_parse(mf, s, value, &mask); | |
2207 | if (error) { | |
2208 | return error; | |
2209 | } | |
2210 | ||
2211 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2212 | return xasprintf("%s: wildcards not allowed here", s); | |
2213 | } | |
2214 | return NULL; | |
2215 | } | |
2216 | ||
2217 | static void | |
2218 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2219 | const uint8_t *maskp, struct ds *s) | |
2220 | { | |
6a885fd0 | 2221 | if (mf->string == MFS_HEXADECIMAL) { |
1734bf29 | 2222 | ds_put_hex(s, valuep, mf->n_bytes); |
6a885fd0 | 2223 | } else { |
1734bf29 JG |
2224 | unsigned long long int integer = 0; |
2225 | int i; | |
6a885fd0 | 2226 | |
1734bf29 | 2227 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 | 2228 | for (i = 0; i < mf->n_bytes; i++) { |
1734bf29 | 2229 | integer = (integer << 8) | valuep[i]; |
6a885fd0 | 2230 | } |
1734bf29 JG |
2231 | ds_put_format(s, "%lld", integer); |
2232 | } | |
6a885fd0 | 2233 | |
1734bf29 | 2234 | if (maskp) { |
6a885fd0 BP |
2235 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm |
2236 | * not sure that that a bit-mask written in decimal is ever easier to | |
2237 | * understand than the same bit-mask written in hexadecimal. */ | |
1734bf29 JG |
2238 | ds_put_char(s, '/'); |
2239 | ds_put_hex(s, maskp, mf->n_bytes); | |
6a885fd0 BP |
2240 | } |
2241 | } | |
2242 | ||
7257b535 | 2243 | static void |
8f75dea3 | 2244 | mf_format_frag_string(uint8_t value, uint8_t mask, struct ds *s) |
7257b535 BP |
2245 | { |
2246 | const struct frag_handling *h; | |
7257b535 | 2247 | |
eadef313 | 2248 | mask &= FLOW_NW_FRAG_MASK; |
8f75dea3 | 2249 | value &= mask; |
7257b535 BP |
2250 | |
2251 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2252 | if (value == h->value && mask == h->mask) { | |
2253 | ds_put_cstr(s, h->name); | |
2254 | return; | |
2255 | } | |
2256 | } | |
2257 | ds_put_cstr(s, "<error>"); | |
2258 | } | |
2259 | ||
4fe3445a PS |
2260 | static void |
2261 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2262 | { | |
2263 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2264 | } | |
2265 | ||
61bf6666 JR |
2266 | static void |
2267 | mf_format_tcp_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s) | |
2268 | { | |
2269 | format_flags_masked(s, NULL, packet_tcp_flag_to_string, ntohs(value), | |
2270 | TCP_FLAGS(mask)); | |
2271 | } | |
2272 | ||
6a885fd0 BP |
2273 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2274 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2275 | void | |
2276 | mf_format(const struct mf_field *mf, | |
2277 | const union mf_value *value, const union mf_value *mask, | |
2278 | struct ds *s) | |
2279 | { | |
2280 | if (mask) { | |
53cb9c3e | 2281 | if (is_all_zeros(mask, mf->n_bytes)) { |
6a885fd0 BP |
2282 | ds_put_cstr(s, "ANY"); |
2283 | return; | |
53cb9c3e | 2284 | } else if (is_all_ones(mask, mf->n_bytes)) { |
6a885fd0 BP |
2285 | mask = NULL; |
2286 | } | |
2287 | } | |
2288 | ||
2289 | switch (mf->string) { | |
72333065 JR |
2290 | case MFS_OFP_PORT_OXM: |
2291 | if (!mask) { | |
4e022ec0 | 2292 | ofp_port_t port; |
bc146369 | 2293 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
2294 | ofputil_format_port(port, s); |
2295 | break; | |
2296 | } | |
2297 | /* fall through */ | |
6a885fd0 BP |
2298 | case MFS_OFP_PORT: |
2299 | if (!mask) { | |
4e022ec0 | 2300 | ofputil_format_port(u16_to_ofp(ntohs(value->be16)), s); |
6a885fd0 BP |
2301 | break; |
2302 | } | |
2303 | /* fall through */ | |
2304 | case MFS_DECIMAL: | |
2305 | case MFS_HEXADECIMAL: | |
2306 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2307 | break; | |
2308 | ||
2309 | case MFS_ETHERNET: | |
3b4d8ad3 | 2310 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2311 | break; |
2312 | ||
2313 | case MFS_IPV4: | |
b8266395 | 2314 | ip_format_masked(value->be32, mask ? mask->be32 : OVS_BE32_MAX, s); |
6a885fd0 BP |
2315 | break; |
2316 | ||
2317 | case MFS_IPV6: | |
2318 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2319 | break; | |
2320 | ||
7257b535 | 2321 | case MFS_FRAG: |
8f75dea3 | 2322 | mf_format_frag_string(value->u8, mask ? mask->u8 : UINT8_MAX, s); |
7257b535 BP |
2323 | break; |
2324 | ||
4fe3445a PS |
2325 | case MFS_TNL_FLAGS: |
2326 | mf_format_tnl_flags_string(&value->be16, s); | |
2327 | break; | |
2328 | ||
61bf6666 JR |
2329 | case MFS_TCP_FLAGS: |
2330 | mf_format_tcp_flags_string(value->be16, | |
2331 | mask ? mask->be16 : OVS_BE16_MAX, s); | |
2332 | break; | |
2333 | ||
6a885fd0 | 2334 | default: |
428b2edd | 2335 | OVS_NOT_REACHED(); |
6a885fd0 BP |
2336 | } |
2337 | } | |
816fd533 | 2338 | \f |
9bab681f IY |
2339 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2340 | * least-significant bits in 'x'. | |
2341 | */ | |
2342 | void | |
2343 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2344 | const union mf_subvalue *x, struct flow *flow) | |
2345 | { | |
2346 | const struct mf_field *field = sf->field; | |
2347 | union mf_value value; | |
2348 | ||
2349 | mf_get_value(field, flow, &value); | |
158edc8d | 2350 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2351 | sf->ofs, sf->n_bits); |
2352 | mf_set_flow_value(field, &value, flow); | |
2353 | } | |
2354 | ||
81a76618 | 2355 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2356 | * least-significant bits in 'x'. |
615660a9 | 2357 | */ |
1b35df45 BP |
2358 | void |
2359 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2360 | struct match *match) |
1b35df45 BP |
2361 | { |
2362 | const struct mf_field *field = sf->field; | |
2363 | union mf_value value, mask; | |
2364 | ||
81a76618 | 2365 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2366 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2367 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2368 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2369 | } |
2370 | ||
35c1f798 BP |
2371 | /* 'v' and 'm' correspond to values of 'field'. This function copies them into |
2372 | * 'match' in the correspond positions. */ | |
2373 | void | |
2374 | mf_mask_subfield(const struct mf_field *field, | |
2375 | const union mf_subvalue *v, | |
2376 | const union mf_subvalue *m, | |
2377 | struct match *match) | |
2378 | { | |
2379 | union mf_value value, mask; | |
2380 | ||
2381 | mf_get(field, match, &value, &mask); | |
2382 | bitwise_copy(v, sizeof *v, 0, &value, field->n_bytes, 0, field->n_bits); | |
2383 | bitwise_copy(m, sizeof *m, 0, &mask, field->n_bytes, 0, field->n_bits); | |
2384 | mf_set(field, &value, &mask, match); | |
2385 | } | |
2386 | ||
1b35df45 BP |
2387 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2388 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2389 | void | |
2390 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2391 | union mf_subvalue *x) | |
2392 | { | |
2393 | union mf_value value; | |
2394 | ||
2395 | mf_get_value(sf->field, flow, &value); | |
2396 | ||
2397 | memset(x, 0, sizeof *x); | |
2398 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2399 | x, sizeof *x, 0, | |
2400 | sf->n_bits); | |
2401 | } | |
2402 | ||
816fd533 BP |
2403 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2404 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2405 | * less. */ | |
2406 | uint64_t | |
2407 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2408 | { | |
2409 | union mf_value value; | |
2410 | ||
2411 | mf_get_value(sf->field, flow, &value); | |
2412 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2413 | } | |
2414 | ||
9bab681f IY |
2415 | void |
2416 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2417 | { | |
e7ae59f9 | 2418 | ds_put_hex(s, subvalue->u8, sizeof subvalue->u8); |
9bab681f | 2419 | } |
bc65c25a SH |
2420 | |
2421 | void | |
2422 | field_array_set(enum mf_field_id id, const union mf_value *value, | |
2423 | struct field_array *fa) | |
2424 | { | |
2425 | ovs_assert(id < MFF_N_IDS); | |
2426 | bitmap_set1(fa->used.bm, id); | |
2427 | fa->value[id] = *value; | |
2428 | } |