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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" | |
9558d2a5 | 36 | #include "tun-metadata.h" |
6a885fd0 | 37 | #include "unaligned.h" |
86f35fb5 | 38 | #include "util.h" |
e6211adc | 39 | #include "openvswitch/vlog.h" |
816fd533 BP |
40 | |
41 | VLOG_DEFINE_THIS_MODULE(meta_flow); | |
6a885fd0 | 42 | |
13751fd8 JR |
43 | #define FLOW_U32OFS(FIELD) \ |
44 | offsetof(struct flow, FIELD) % 4 ? -1 : offsetof(struct flow, FIELD) / 4 | |
45 | ||
6a885fd0 BP |
46 | #define MF_FIELD_SIZES(MEMBER) \ |
47 | sizeof ((union mf_value *)0)->MEMBER, \ | |
48 | 8 * sizeof ((union mf_value *)0)->MEMBER | |
49 | ||
7f98c44d JR |
50 | extern const struct mf_field mf_fields[MFF_N_IDS]; /* Silence a warning. */ |
51 | ||
52 | const struct mf_field mf_fields[MFF_N_IDS] = { | |
a4ce8b25 | 53 | #include "meta-flow.inc" |
6a885fd0 BP |
54 | }; |
55 | ||
4663f9e0 BP |
56 | /* Maps from an mf_field's 'name' or 'extra_name' to the mf_field. */ |
57 | static struct shash mf_by_name; | |
28da1f8f | 58 | |
816fd533 BP |
59 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
60 | * controller and so there's not much point in showing a lot of them. */ | |
61 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
62 | ||
4663f9e0 | 63 | static void nxm_init(void); |
b5e5143b | 64 | |
6a885fd0 BP |
65 | /* Returns the field with the given 'name', or a null pointer if no field has |
66 | * that name. */ | |
67 | const struct mf_field * | |
68 | mf_from_name(const char *name) | |
69 | { | |
4663f9e0 | 70 | nxm_init(); |
6a885fd0 BP |
71 | return shash_find_data(&mf_by_name, name); |
72 | } | |
73 | ||
28da1f8f | 74 | static void |
4663f9e0 | 75 | nxm_do_init(void) |
28da1f8f | 76 | { |
216a32dd | 77 | int i; |
28da1f8f | 78 | |
4663f9e0 | 79 | shash_init(&mf_by_name); |
216a32dd JR |
80 | for (i = 0; i < MFF_N_IDS; i++) { |
81 | const struct mf_field *mf = &mf_fields[i]; | |
82 | ||
83 | ovs_assert(mf->id == i); /* Fields must be in the enum order. */ | |
84 | ||
4663f9e0 BP |
85 | shash_add_once(&mf_by_name, mf->name, mf); |
86 | if (mf->extra_name) { | |
87 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
88 | } | |
28da1f8f | 89 | } |
28da1f8f BP |
90 | } |
91 | ||
4663f9e0 BP |
92 | static void |
93 | nxm_init(void) | |
94 | { | |
95 | static pthread_once_t once = PTHREAD_ONCE_INIT; | |
96 | pthread_once(&once, nxm_do_init); | |
97 | } | |
98 | ||
35c1f798 BP |
99 | /* Consider the two value/mask pairs 'a_value/a_mask' and 'b_value/b_mask' as |
100 | * restrictions on a field's value. Then, this function initializes | |
101 | * 'dst_value/dst_mask' such that it combines the restrictions of both pairs. | |
102 | * This is not always possible, i.e. if one pair insists on a value of 0 in | |
103 | * some bit and the other pair insists on a value of 1 in that bit. This | |
104 | * function returns false in a case where the combined restriction is | |
105 | * impossible (in which case 'dst_value/dst_mask' is not fully initialized), | |
106 | * true otherwise. | |
107 | * | |
108 | * (As usually true for value/mask pairs in OVS, any 1-bit in a value must have | |
109 | * a corresponding 1-bit in its mask.) */ | |
110 | bool | |
111 | mf_subvalue_intersect(const union mf_subvalue *a_value, | |
112 | const union mf_subvalue *a_mask, | |
113 | const union mf_subvalue *b_value, | |
114 | const union mf_subvalue *b_mask, | |
115 | union mf_subvalue *dst_value, | |
116 | union mf_subvalue *dst_mask) | |
117 | { | |
118 | for (int i = 0; i < ARRAY_SIZE(a_value->be64); i++) { | |
119 | ovs_be64 av = a_value->be64[i]; | |
120 | ovs_be64 am = a_mask->be64[i]; | |
121 | ovs_be64 bv = b_value->be64[i]; | |
122 | ovs_be64 bm = b_mask->be64[i]; | |
123 | ovs_be64 *dv = &dst_value->be64[i]; | |
124 | ovs_be64 *dm = &dst_mask->be64[i]; | |
125 | ||
126 | if ((av ^ bv) & (am & bm)) { | |
127 | return false; | |
128 | } | |
129 | *dv = av | bv; | |
130 | *dm = am | bm; | |
131 | } | |
132 | return true; | |
133 | } | |
134 | ||
135 | /* Returns the "number of bits" in 'v', e.g. 1 if only the lowest-order bit is | |
136 | * set, 2 if the second-lowest-order bit is set, and so on. */ | |
137 | int | |
138 | mf_subvalue_width(const union mf_subvalue *v) | |
139 | { | |
140 | return 1 + bitwise_rscan(v, sizeof *v, true, sizeof *v * 8 - 1, -1); | |
141 | } | |
142 | ||
143 | /* For positive 'n', shifts the bits in 'value' 'n' bits to the left, and for | |
144 | * negative 'n', shifts the bits '-n' bits to the right. */ | |
145 | void | |
146 | mf_subvalue_shift(union mf_subvalue *value, int n) | |
147 | { | |
148 | if (n) { | |
149 | union mf_subvalue tmp; | |
150 | memset(&tmp, 0, sizeof tmp); | |
151 | ||
152 | if (n > 0 && n < 8 * sizeof tmp) { | |
153 | bitwise_copy(value, sizeof *value, 0, | |
154 | &tmp, sizeof tmp, n, | |
155 | 8 * sizeof tmp - n); | |
156 | } else if (n < 0 && n > -8 * sizeof tmp) { | |
157 | bitwise_copy(value, sizeof *value, -n, | |
158 | &tmp, sizeof tmp, 0, | |
159 | 8 * sizeof tmp + n); | |
160 | } | |
161 | *value = tmp; | |
162 | } | |
163 | } | |
164 | ||
6a885fd0 BP |
165 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
166 | * specifies at least one bit in the field. | |
167 | * | |
168 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
169 | * meets 'mf''s prerequisites. */ | |
170 | bool | |
171 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
172 | { | |
173 | switch (mf->id) { | |
a79f29f2 AZ |
174 | case MFF_DP_HASH: |
175 | return !wc->masks.dp_hash; | |
176 | case MFF_RECIRC_ID: | |
177 | return !wc->masks.recirc_id; | |
18080541 BP |
178 | case MFF_CONJ_ID: |
179 | return !wc->masks.conj_id; | |
4fe3445a | 180 | case MFF_TUN_SRC: |
0ad90c84 | 181 | return !wc->masks.tunnel.ip_src; |
4fe3445a | 182 | case MFF_TUN_DST: |
0ad90c84 JR |
183 | return !wc->masks.tunnel.ip_dst; |
184 | case MFF_TUN_ID: | |
b666962b | 185 | return !wc->masks.tunnel.tun_id; |
4fe3445a | 186 | case MFF_TUN_TOS: |
b666962b | 187 | return !wc->masks.tunnel.ip_tos; |
4fe3445a | 188 | case MFF_TUN_TTL: |
b666962b | 189 | return !wc->masks.tunnel.ip_ttl; |
4fe3445a | 190 | case MFF_TUN_FLAGS: |
b666962b | 191 | return !(wc->masks.tunnel.flags & FLOW_TNL_PUB_F_MASK); |
ac6073e3 MC |
192 | case MFF_TUN_GBP_ID: |
193 | return !wc->masks.tunnel.gbp_id; | |
194 | case MFF_TUN_GBP_FLAGS: | |
195 | return !wc->masks.tunnel.gbp_flags; | |
9558d2a5 JG |
196 | CASE_MFF_TUN_METADATA: { |
197 | union mf_value value; | |
198 | ||
6728d578 | 199 | tun_metadata_read(&wc->masks.tunnel, mf, &value); |
9558d2a5 JG |
200 | return is_all_zeros(&value.tun_metadata, mf->n_bytes); |
201 | } | |
969fc56c | 202 | case MFF_METADATA: |
26720e24 | 203 | return !wc->masks.metadata; |
0bdc4bec | 204 | case MFF_IN_PORT: |
72333065 | 205 | case MFF_IN_PORT_OXM: |
4e022ec0 | 206 | return !wc->masks.in_port.ofp_port; |
1b567fb9 AA |
207 | case MFF_SKB_PRIORITY: |
208 | return !wc->masks.skb_priority; | |
1362e248 JG |
209 | case MFF_PKT_MARK: |
210 | return !wc->masks.pkt_mark; | |
0d7e2fe4 | 211 | CASE_MFF_REGS: |
26720e24 | 212 | return !wc->masks.regs[mf->id - MFF_REG0]; |
79fe0f46 BP |
213 | CASE_MFF_XREGS: |
214 | return !flow_get_xreg(&wc->masks, mf->id - MFF_XREG0); | |
c61f3870 BP |
215 | case MFF_ACTSET_OUTPUT: |
216 | return !wc->masks.actset_output; | |
6a885fd0 | 217 | |
73c0ce34 | 218 | case MFF_ETH_SRC: |
26720e24 | 219 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 220 | case MFF_ETH_DST: |
26720e24 | 221 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 222 | case MFF_ETH_TYPE: |
26720e24 | 223 | return !wc->masks.dl_type; |
6a885fd0 | 224 | |
e878338b SH |
225 | case MFF_ARP_SHA: |
226 | case MFF_ND_SLL: | |
26720e24 | 227 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
228 | |
229 | case MFF_ARP_THA: | |
230 | case MFF_ND_TLL: | |
26720e24 | 231 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 232 | |
6a885fd0 | 233 | case MFF_VLAN_TCI: |
26720e24 | 234 | return !wc->masks.vlan_tci; |
441c57a9 | 235 | case MFF_DL_VLAN: |
26720e24 | 236 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 237 | case MFF_VLAN_VID: |
26720e24 | 238 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 239 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 240 | case MFF_VLAN_PCP: |
26720e24 | 241 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 | 242 | |
b02475c5 | 243 | case MFF_MPLS_LABEL: |
8bfd0fda | 244 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)); |
b02475c5 | 245 | case MFF_MPLS_TC: |
60df616f | 246 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK)); |
b02475c5 | 247 | case MFF_MPLS_BOS: |
60df616f | 248 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)); |
b02475c5 | 249 | |
6a885fd0 | 250 | case MFF_IPV4_SRC: |
26720e24 | 251 | return !wc->masks.nw_src; |
6a885fd0 | 252 | case MFF_IPV4_DST: |
26720e24 | 253 | return !wc->masks.nw_dst; |
6a885fd0 BP |
254 | |
255 | case MFF_IPV6_SRC: | |
26720e24 | 256 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 257 | case MFF_IPV6_DST: |
26720e24 | 258 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 259 | |
32455024 | 260 | case MFF_IPV6_LABEL: |
26720e24 | 261 | return !wc->masks.ipv6_label; |
32455024 | 262 | |
851d3105 | 263 | case MFF_IP_PROTO: |
26720e24 | 264 | return !wc->masks.nw_proto; |
5d9499c4 | 265 | case MFF_IP_DSCP: |
1638b906 | 266 | case MFF_IP_DSCP_SHIFTED: |
26720e24 | 267 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 268 | case MFF_IP_ECN: |
26720e24 | 269 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 270 | case MFF_IP_TTL: |
26720e24 | 271 | return !wc->masks.nw_ttl; |
5d9499c4 | 272 | |
47284b1f | 273 | case MFF_ND_TARGET: |
26720e24 | 274 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 275 | |
7257b535 | 276 | case MFF_IP_FRAG: |
26720e24 | 277 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 278 | |
851d3105 | 279 | case MFF_ARP_OP: |
26720e24 | 280 | return !wc->masks.nw_proto; |
6a885fd0 | 281 | case MFF_ARP_SPA: |
26720e24 | 282 | return !wc->masks.nw_src; |
6a885fd0 | 283 | case MFF_ARP_TPA: |
26720e24 | 284 | return !wc->masks.nw_dst; |
6a885fd0 | 285 | |
73f33563 BP |
286 | case MFF_TCP_SRC: |
287 | case MFF_UDP_SRC: | |
0d56eaf2 | 288 | case MFF_SCTP_SRC: |
73f33563 BP |
289 | case MFF_ICMPV4_TYPE: |
290 | case MFF_ICMPV6_TYPE: | |
26720e24 | 291 | return !wc->masks.tp_src; |
73f33563 BP |
292 | case MFF_TCP_DST: |
293 | case MFF_UDP_DST: | |
0d56eaf2 | 294 | case MFF_SCTP_DST: |
73f33563 BP |
295 | case MFF_ICMPV4_CODE: |
296 | case MFF_ICMPV6_CODE: | |
26720e24 | 297 | return !wc->masks.tp_dst; |
dc235f7f JR |
298 | case MFF_TCP_FLAGS: |
299 | return !wc->masks.tcp_flags; | |
73f33563 | 300 | |
6a885fd0 BP |
301 | case MFF_N_IDS: |
302 | default: | |
428b2edd | 303 | OVS_NOT_REACHED(); |
6a885fd0 BP |
304 | } |
305 | } | |
306 | ||
307 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
308 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
309 | * purposes, or to 0 if it is wildcarded. | |
310 | * | |
311 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
312 | * meets 'mf''s prerequisites. */ | |
313 | void | |
314 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
315 | union mf_value *mask) | |
316 | { | |
fb15feb0 | 317 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
318 | } |
319 | ||
320 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
321 | * if the mask is valid, false otherwise. */ | |
322 | bool | |
323 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
324 | { | |
325 | switch (mf->maskable) { | |
326 | case MFM_NONE: | |
53cb9c3e JR |
327 | return (is_all_zeros(mask, mf->n_bytes) || |
328 | is_all_ones(mask, mf->n_bytes)); | |
6a885fd0 BP |
329 | |
330 | case MFM_FULLY: | |
331 | return true; | |
6a885fd0 BP |
332 | } |
333 | ||
428b2edd | 334 | OVS_NOT_REACHED(); |
6a885fd0 BP |
335 | } |
336 | ||
6a885fd0 BP |
337 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ |
338 | bool | |
339 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
340 | { | |
341 | switch (mf->prereqs) { | |
342 | case MFP_NONE: | |
343 | return true; | |
344 | ||
345 | case MFP_ARP: | |
8087f5ff MM |
346 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
347 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
348 | case MFP_IPV4: |
349 | return flow->dl_type == htons(ETH_TYPE_IP); | |
350 | case MFP_IPV6: | |
351 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 352 | case MFP_VLAN_VID: |
5921e99a | 353 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
b02475c5 SH |
354 | case MFP_MPLS: |
355 | return eth_type_mpls(flow->dl_type); | |
6a885fd0 BP |
356 | case MFP_IP_ANY: |
357 | return is_ip_any(flow); | |
358 | ||
359 | case MFP_TCP: | |
b8778a0d JR |
360 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP |
361 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
6a885fd0 | 362 | case MFP_UDP: |
b8778a0d JR |
363 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP |
364 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
0d56eaf2 | 365 | case MFP_SCTP: |
b8778a0d JR |
366 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_SCTP |
367 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
268a95e0 BP |
368 | case MFP_ICMPV4: |
369 | return is_icmpv4(flow); | |
6a885fd0 BP |
370 | case MFP_ICMPV6: |
371 | return is_icmpv6(flow); | |
6a885fd0 BP |
372 | |
373 | case MFP_ND: | |
374 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
375 | && flow->tp_dst == htons(0) |
376 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
377 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
378 | case MFP_ND_SOLICIT: |
379 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
380 | && flow->tp_dst == htons(0) |
381 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
382 | case MFP_ND_ADVERT: |
383 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
384 | && flow->tp_dst == htons(0) |
385 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
386 | } |
387 | ||
428b2edd | 388 | OVS_NOT_REACHED(); |
6a885fd0 BP |
389 | } |
390 | ||
b283836c JR |
391 | /* Set field and it's prerequisities in the mask. |
392 | * This is only ever called for writeable 'mf's, but we do not make the | |
f7484f37 JR |
393 | * distinction here. |
394 | * The widest field this is ever called for an IPv6 address (16 bytes). */ | |
b283836c JR |
395 | void |
396 | mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow *mask) | |
397 | { | |
f7484f37 | 398 | static union mf_value exact_match_mask = { .ipv6 = IN6ADDR_EXACT_INIT }; |
b283836c JR |
399 | |
400 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
401 | ||
402 | switch (mf->prereqs) { | |
403 | case MFP_ND: | |
404 | case MFP_ND_SOLICIT: | |
405 | case MFP_ND_ADVERT: | |
406 | mask->tp_src = OVS_BE16_MAX; | |
407 | mask->tp_dst = OVS_BE16_MAX; | |
408 | /* Fall through. */ | |
409 | case MFP_TCP: | |
410 | case MFP_UDP: | |
411 | case MFP_SCTP: | |
412 | case MFP_ICMPV4: | |
413 | case MFP_ICMPV6: | |
b8778a0d | 414 | /* nw_frag always unwildcarded. */ |
b283836c JR |
415 | mask->nw_proto = 0xff; |
416 | /* Fall through. */ | |
417 | case MFP_ARP: | |
418 | case MFP_IPV4: | |
419 | case MFP_IPV6: | |
420 | case MFP_MPLS: | |
421 | case MFP_IP_ANY: | |
422 | mask->dl_type = OVS_BE16_MAX; | |
423 | break; | |
424 | case MFP_VLAN_VID: | |
425 | mask->vlan_tci |= htons(VLAN_CFI); | |
426 | break; | |
427 | case MFP_NONE: | |
428 | break; | |
429 | } | |
430 | } | |
431 | ||
0c4b9393 SH |
432 | /* Set bits of 'bm' corresponding to the field 'mf' and it's prerequisities. */ |
433 | void | |
434 | mf_bitmap_set_field_and_prereqs(const struct mf_field *mf, struct mf_bitmap *bm) | |
435 | { | |
436 | bitmap_set1(bm->bm, mf->id); | |
437 | ||
438 | switch (mf->prereqs) { | |
439 | case MFP_ND: | |
440 | case MFP_ND_SOLICIT: | |
441 | case MFP_ND_ADVERT: | |
442 | bitmap_set1(bm->bm, MFF_TCP_SRC); | |
443 | bitmap_set1(bm->bm, MFF_TCP_DST); | |
444 | /* Fall through. */ | |
445 | case MFP_TCP: | |
446 | case MFP_UDP: | |
447 | case MFP_SCTP: | |
448 | case MFP_ICMPV4: | |
449 | case MFP_ICMPV6: | |
450 | /* nw_frag always unwildcarded. */ | |
451 | bitmap_set1(bm->bm, MFF_IP_PROTO); | |
452 | /* Fall through. */ | |
453 | case MFP_ARP: | |
454 | case MFP_IPV4: | |
455 | case MFP_IPV6: | |
456 | case MFP_MPLS: | |
457 | case MFP_IP_ANY: | |
458 | bitmap_set1(bm->bm, MFF_ETH_TYPE); | |
459 | break; | |
460 | case MFP_VLAN_VID: | |
461 | bitmap_set1(bm->bm, MFF_VLAN_TCI); | |
462 | break; | |
463 | case MFP_NONE: | |
464 | break; | |
465 | } | |
466 | } | |
b283836c | 467 | |
6a885fd0 BP |
468 | /* Returns true if 'value' may be a valid value *as part of a masked match*, |
469 | * false otherwise. | |
470 | * | |
471 | * A value is not rejected just because it is not valid for the field in | |
472 | * question, but only if it doesn't make sense to test the bits in question at | |
473 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
474 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
475 | * it is still legitimate to test just for those bits (see the documentation | |
476 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 477 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
478 | bool |
479 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
480 | { | |
481 | switch (mf->id) { | |
a79f29f2 AZ |
482 | case MFF_DP_HASH: |
483 | case MFF_RECIRC_ID: | |
18080541 | 484 | case MFF_CONJ_ID: |
6a885fd0 | 485 | case MFF_TUN_ID: |
4fe3445a PS |
486 | case MFF_TUN_SRC: |
487 | case MFF_TUN_DST: | |
488 | case MFF_TUN_TOS: | |
489 | case MFF_TUN_TTL: | |
ac6073e3 MC |
490 | case MFF_TUN_GBP_ID: |
491 | case MFF_TUN_GBP_FLAGS: | |
9558d2a5 | 492 | CASE_MFF_TUN_METADATA: |
969fc56c | 493 | case MFF_METADATA: |
6a885fd0 | 494 | case MFF_IN_PORT: |
1b567fb9 | 495 | case MFF_SKB_PRIORITY: |
1362e248 | 496 | case MFF_PKT_MARK: |
0d7e2fe4 | 497 | CASE_MFF_REGS: |
79fe0f46 | 498 | CASE_MFF_XREGS: |
6a885fd0 BP |
499 | case MFF_ETH_SRC: |
500 | case MFF_ETH_DST: | |
501 | case MFF_ETH_TYPE: | |
502 | case MFF_VLAN_TCI: | |
503 | case MFF_IPV4_SRC: | |
504 | case MFF_IPV4_DST: | |
505 | case MFF_IPV6_SRC: | |
506 | case MFF_IPV6_DST: | |
507 | case MFF_IP_PROTO: | |
a61680c6 | 508 | case MFF_IP_TTL: |
6a885fd0 BP |
509 | case MFF_ARP_SPA: |
510 | case MFF_ARP_TPA: | |
511 | case MFF_ARP_SHA: | |
512 | case MFF_ARP_THA: | |
513 | case MFF_TCP_SRC: | |
514 | case MFF_TCP_DST: | |
515 | case MFF_UDP_SRC: | |
516 | case MFF_UDP_DST: | |
0d56eaf2 JS |
517 | case MFF_SCTP_SRC: |
518 | case MFF_SCTP_DST: | |
268a95e0 BP |
519 | case MFF_ICMPV4_TYPE: |
520 | case MFF_ICMPV4_CODE: | |
521 | case MFF_ICMPV6_TYPE: | |
522 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
523 | case MFF_ND_TARGET: |
524 | case MFF_ND_SLL: | |
525 | case MFF_ND_TLL: | |
526 | return true; | |
527 | ||
c61f3870 BP |
528 | case MFF_IN_PORT_OXM: |
529 | case MFF_ACTSET_OUTPUT: { | |
4e022ec0 | 530 | ofp_port_t port; |
72333065 JR |
531 | return !ofputil_port_from_ofp11(value->be32, &port); |
532 | } | |
533 | ||
530180fd | 534 | case MFF_IP_DSCP: |
7257b535 | 535 | return !(value->u8 & ~IP_DSCP_MASK); |
1638b906 BP |
536 | case MFF_IP_DSCP_SHIFTED: |
537 | return !(value->u8 & (~IP_DSCP_MASK >> 2)); | |
530180fd JP |
538 | case MFF_IP_ECN: |
539 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 540 | case MFF_IP_FRAG: |
eadef313 | 541 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
dc235f7f JR |
542 | case MFF_TCP_FLAGS: |
543 | return !(value->be16 & ~htons(0x0fff)); | |
6a885fd0 BP |
544 | |
545 | case MFF_ARP_OP: | |
546 | return !(value->be16 & htons(0xff00)); | |
547 | ||
441c57a9 | 548 | case MFF_DL_VLAN: |
6a885fd0 | 549 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
550 | case MFF_VLAN_VID: |
551 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 552 | |
441c57a9 | 553 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 554 | case MFF_VLAN_PCP: |
24016f5a | 555 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 556 | |
fa8223b7 JP |
557 | case MFF_IPV6_LABEL: |
558 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
559 | ||
b02475c5 SH |
560 | case MFF_MPLS_LABEL: |
561 | return !(value->be32 & ~htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT)); | |
562 | ||
563 | case MFF_MPLS_TC: | |
564 | return !(value->u8 & ~(MPLS_TC_MASK >> MPLS_TC_SHIFT)); | |
565 | ||
566 | case MFF_MPLS_BOS: | |
567 | return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT)); | |
568 | ||
b666962b JG |
569 | case MFF_TUN_FLAGS: |
570 | return !(value->be16 & ~htons(FLOW_TNL_PUB_F_MASK)); | |
571 | ||
6a885fd0 BP |
572 | case MFF_N_IDS: |
573 | default: | |
428b2edd | 574 | OVS_NOT_REACHED(); |
6a885fd0 BP |
575 | } |
576 | } | |
577 | ||
578 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
579 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
580 | void | |
581 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
582 | union mf_value *value) | |
583 | { | |
584 | switch (mf->id) { | |
a79f29f2 AZ |
585 | case MFF_DP_HASH: |
586 | value->be32 = htonl(flow->dp_hash); | |
587 | break; | |
588 | case MFF_RECIRC_ID: | |
589 | value->be32 = htonl(flow->recirc_id); | |
590 | break; | |
18080541 BP |
591 | case MFF_CONJ_ID: |
592 | value->be32 = htonl(flow->conj_id); | |
593 | break; | |
6a885fd0 | 594 | case MFF_TUN_ID: |
296e07ac | 595 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 596 | break; |
4fe3445a PS |
597 | case MFF_TUN_SRC: |
598 | value->be32 = flow->tunnel.ip_src; | |
599 | break; | |
600 | case MFF_TUN_DST: | |
601 | value->be32 = flow->tunnel.ip_dst; | |
602 | break; | |
603 | case MFF_TUN_FLAGS: | |
b666962b | 604 | value->be16 = htons(flow->tunnel.flags & FLOW_TNL_PUB_F_MASK); |
4fe3445a | 605 | break; |
ac6073e3 MC |
606 | case MFF_TUN_GBP_ID: |
607 | value->be16 = flow->tunnel.gbp_id; | |
608 | break; | |
609 | case MFF_TUN_GBP_FLAGS: | |
610 | value->u8 = flow->tunnel.gbp_flags; | |
611 | break; | |
4fe3445a PS |
612 | case MFF_TUN_TTL: |
613 | value->u8 = flow->tunnel.ip_ttl; | |
614 | break; | |
615 | case MFF_TUN_TOS: | |
616 | value->u8 = flow->tunnel.ip_tos; | |
617 | break; | |
9558d2a5 | 618 | CASE_MFF_TUN_METADATA: |
6728d578 | 619 | tun_metadata_read(&flow->tunnel, mf, value); |
9558d2a5 | 620 | break; |
4fe3445a | 621 | |
969fc56c JS |
622 | case MFF_METADATA: |
623 | value->be64 = flow->metadata; | |
624 | break; | |
6a885fd0 BP |
625 | |
626 | case MFF_IN_PORT: | |
4e022ec0 | 627 | value->be16 = htons(ofp_to_u16(flow->in_port.ofp_port)); |
6a885fd0 | 628 | break; |
72333065 | 629 | case MFF_IN_PORT_OXM: |
4e022ec0 | 630 | value->be32 = ofputil_port_to_ofp11(flow->in_port.ofp_port); |
72333065 | 631 | break; |
c61f3870 BP |
632 | case MFF_ACTSET_OUTPUT: |
633 | value->be32 = ofputil_port_to_ofp11(flow->actset_output); | |
634 | break; | |
72333065 | 635 | |
1b567fb9 | 636 | case MFF_SKB_PRIORITY: |
a81f0a44 | 637 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
638 | break; |
639 | ||
1362e248 JG |
640 | case MFF_PKT_MARK: |
641 | value->be32 = htonl(flow->pkt_mark); | |
1b567fb9 AA |
642 | break; |
643 | ||
0d7e2fe4 | 644 | CASE_MFF_REGS: |
2f98b0b7 | 645 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
646 | break; |
647 | ||
79fe0f46 BP |
648 | CASE_MFF_XREGS: |
649 | value->be64 = htonll(flow_get_xreg(flow, mf->id - MFF_XREG0)); | |
650 | break; | |
651 | ||
6a885fd0 BP |
652 | case MFF_ETH_SRC: |
653 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
654 | break; | |
655 | ||
656 | case MFF_ETH_DST: | |
657 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
658 | break; | |
659 | ||
660 | case MFF_ETH_TYPE: | |
661 | value->be16 = flow->dl_type; | |
662 | break; | |
663 | ||
664 | case MFF_VLAN_TCI: | |
665 | value->be16 = flow->vlan_tci; | |
666 | break; | |
667 | ||
441c57a9 | 668 | case MFF_DL_VLAN: |
6a885fd0 BP |
669 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
670 | break; | |
cc34bc8c BP |
671 | case MFF_VLAN_VID: |
672 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
673 | break; | |
6a885fd0 | 674 | |
441c57a9 | 675 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 676 | case MFF_VLAN_PCP: |
6a885fd0 BP |
677 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
678 | break; | |
679 | ||
b02475c5 | 680 | case MFF_MPLS_LABEL: |
8bfd0fda | 681 | value->be32 = htonl(mpls_lse_to_label(flow->mpls_lse[0])); |
b02475c5 SH |
682 | break; |
683 | ||
684 | case MFF_MPLS_TC: | |
8bfd0fda | 685 | value->u8 = mpls_lse_to_tc(flow->mpls_lse[0]); |
b02475c5 SH |
686 | break; |
687 | ||
688 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
689 | value->u8 = mpls_lse_to_bos(flow->mpls_lse[0]); |
690 | break; | |
b02475c5 | 691 | |
6a885fd0 BP |
692 | case MFF_IPV4_SRC: |
693 | value->be32 = flow->nw_src; | |
694 | break; | |
695 | ||
696 | case MFF_IPV4_DST: | |
697 | value->be32 = flow->nw_dst; | |
698 | break; | |
699 | ||
700 | case MFF_IPV6_SRC: | |
701 | value->ipv6 = flow->ipv6_src; | |
702 | break; | |
703 | ||
704 | case MFF_IPV6_DST: | |
705 | value->ipv6 = flow->ipv6_dst; | |
706 | break; | |
707 | ||
fa8223b7 JP |
708 | case MFF_IPV6_LABEL: |
709 | value->be32 = flow->ipv6_label; | |
710 | break; | |
711 | ||
6a885fd0 BP |
712 | case MFF_IP_PROTO: |
713 | value->u8 = flow->nw_proto; | |
714 | break; | |
715 | ||
530180fd | 716 | case MFF_IP_DSCP: |
eadef313 | 717 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
718 | break; |
719 | ||
1638b906 BP |
720 | case MFF_IP_DSCP_SHIFTED: |
721 | value->u8 = flow->nw_tos >> 2; | |
722 | break; | |
723 | ||
530180fd | 724 | case MFF_IP_ECN: |
eadef313 | 725 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
726 | break; |
727 | ||
a61680c6 JP |
728 | case MFF_IP_TTL: |
729 | value->u8 = flow->nw_ttl; | |
730 | break; | |
731 | ||
7257b535 | 732 | case MFF_IP_FRAG: |
eadef313 | 733 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
734 | break; |
735 | ||
736 | case MFF_ARP_OP: | |
737 | value->be16 = htons(flow->nw_proto); | |
738 | break; | |
739 | ||
740 | case MFF_ARP_SPA: | |
741 | value->be32 = flow->nw_src; | |
742 | break; | |
743 | ||
744 | case MFF_ARP_TPA: | |
745 | value->be32 = flow->nw_dst; | |
746 | break; | |
747 | ||
748 | case MFF_ARP_SHA: | |
749 | case MFF_ND_SLL: | |
750 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
751 | break; | |
752 | ||
753 | case MFF_ARP_THA: | |
754 | case MFF_ND_TLL: | |
755 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
756 | break; | |
757 | ||
758 | case MFF_TCP_SRC: | |
6a885fd0 | 759 | case MFF_UDP_SRC: |
0d56eaf2 | 760 | case MFF_SCTP_SRC: |
6a885fd0 BP |
761 | value->be16 = flow->tp_src; |
762 | break; | |
763 | ||
71baec06 | 764 | case MFF_TCP_DST: |
6a885fd0 | 765 | case MFF_UDP_DST: |
0d56eaf2 | 766 | case MFF_SCTP_DST: |
6a885fd0 BP |
767 | value->be16 = flow->tp_dst; |
768 | break; | |
769 | ||
dc235f7f JR |
770 | case MFF_TCP_FLAGS: |
771 | value->be16 = flow->tcp_flags; | |
772 | break; | |
773 | ||
268a95e0 BP |
774 | case MFF_ICMPV4_TYPE: |
775 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
776 | value->u8 = ntohs(flow->tp_src); |
777 | break; | |
778 | ||
268a95e0 BP |
779 | case MFF_ICMPV4_CODE: |
780 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
781 | value->u8 = ntohs(flow->tp_dst); |
782 | break; | |
783 | ||
784 | case MFF_ND_TARGET: | |
785 | value->ipv6 = flow->nd_target; | |
786 | break; | |
787 | ||
788 | case MFF_N_IDS: | |
789 | default: | |
428b2edd | 790 | OVS_NOT_REACHED(); |
6a885fd0 BP |
791 | } |
792 | } | |
793 | ||
81a76618 BP |
794 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
795 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
796 | * prerequisites. */ |
797 | void | |
798 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 799 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
800 | { |
801 | switch (mf->id) { | |
a79f29f2 AZ |
802 | case MFF_DP_HASH: |
803 | match_set_dp_hash(match, ntohl(value->be32)); | |
804 | break; | |
805 | case MFF_RECIRC_ID: | |
806 | match_set_recirc_id(match, ntohl(value->be32)); | |
807 | break; | |
18080541 BP |
808 | case MFF_CONJ_ID: |
809 | match_set_conj_id(match, ntohl(value->be32)); | |
810 | break; | |
6a885fd0 | 811 | case MFF_TUN_ID: |
81a76618 | 812 | match_set_tun_id(match, value->be64); |
6a885fd0 | 813 | break; |
4fe3445a PS |
814 | case MFF_TUN_SRC: |
815 | match_set_tun_src(match, value->be32); | |
816 | break; | |
817 | case MFF_TUN_DST: | |
818 | match_set_tun_dst(match, value->be32); | |
819 | break; | |
820 | case MFF_TUN_FLAGS: | |
821 | match_set_tun_flags(match, ntohs(value->be16)); | |
822 | break; | |
ac6073e3 MC |
823 | case MFF_TUN_GBP_ID: |
824 | match_set_tun_gbp_id(match, value->be16); | |
825 | break; | |
826 | case MFF_TUN_GBP_FLAGS: | |
827 | match_set_tun_gbp_flags(match, value->u8); | |
828 | break; | |
4fe3445a PS |
829 | case MFF_TUN_TOS: |
830 | match_set_tun_tos(match, value->u8); | |
831 | break; | |
832 | case MFF_TUN_TTL: | |
833 | match_set_tun_ttl(match, value->u8); | |
834 | break; | |
9558d2a5 JG |
835 | CASE_MFF_TUN_METADATA: |
836 | tun_metadata_set_match(mf, value, NULL, match); | |
837 | break; | |
4fe3445a | 838 | |
969fc56c | 839 | case MFF_METADATA: |
81a76618 | 840 | match_set_metadata(match, value->be64); |
969fc56c | 841 | break; |
6a885fd0 BP |
842 | |
843 | case MFF_IN_PORT: | |
4e022ec0 | 844 | match_set_in_port(match, u16_to_ofp(ntohs(value->be16))); |
6a885fd0 BP |
845 | break; |
846 | ||
72333065 | 847 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 848 | ofp_port_t port; |
bc146369 | 849 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
850 | match_set_in_port(match, port); |
851 | break; | |
852 | } | |
c61f3870 BP |
853 | case MFF_ACTSET_OUTPUT: { |
854 | ofp_port_t port; | |
855 | ofputil_port_from_ofp11(value->be32, &port); | |
856 | match_set_actset_output(match, port); | |
857 | break; | |
858 | } | |
72333065 | 859 | |
1b567fb9 AA |
860 | case MFF_SKB_PRIORITY: |
861 | match_set_skb_priority(match, ntohl(value->be32)); | |
862 | break; | |
863 | ||
1362e248 JG |
864 | case MFF_PKT_MARK: |
865 | match_set_pkt_mark(match, ntohl(value->be32)); | |
1b567fb9 AA |
866 | break; |
867 | ||
0d7e2fe4 | 868 | CASE_MFF_REGS: |
81a76618 | 869 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 870 | break; |
6a885fd0 | 871 | |
79fe0f46 BP |
872 | CASE_MFF_XREGS: |
873 | match_set_xreg(match, mf->id - MFF_XREG0, ntohll(value->be64)); | |
874 | break; | |
875 | ||
6a885fd0 | 876 | case MFF_ETH_SRC: |
81a76618 | 877 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
878 | break; |
879 | ||
880 | case MFF_ETH_DST: | |
81a76618 | 881 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
882 | break; |
883 | ||
884 | case MFF_ETH_TYPE: | |
81a76618 | 885 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
886 | break; |
887 | ||
888 | case MFF_VLAN_TCI: | |
81a76618 | 889 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
890 | break; |
891 | ||
441c57a9 | 892 | case MFF_DL_VLAN: |
81a76618 | 893 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 894 | break; |
cc34bc8c | 895 | case MFF_VLAN_VID: |
81a76618 | 896 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 897 | break; |
6a885fd0 | 898 | |
441c57a9 | 899 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 900 | case MFF_VLAN_PCP: |
81a76618 | 901 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
902 | break; |
903 | ||
b02475c5 | 904 | case MFF_MPLS_LABEL: |
8bfd0fda | 905 | match_set_mpls_label(match, 0, value->be32); |
b02475c5 SH |
906 | break; |
907 | ||
908 | case MFF_MPLS_TC: | |
8bfd0fda | 909 | match_set_mpls_tc(match, 0, value->u8); |
b02475c5 SH |
910 | break; |
911 | ||
912 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
913 | match_set_mpls_bos(match, 0, value->u8); |
914 | break; | |
b02475c5 | 915 | |
6a885fd0 | 916 | case MFF_IPV4_SRC: |
81a76618 | 917 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
918 | break; |
919 | ||
920 | case MFF_IPV4_DST: | |
81a76618 | 921 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
922 | break; |
923 | ||
924 | case MFF_IPV6_SRC: | |
81a76618 | 925 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
926 | break; |
927 | ||
928 | case MFF_IPV6_DST: | |
81a76618 | 929 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
930 | break; |
931 | ||
fa8223b7 | 932 | case MFF_IPV6_LABEL: |
81a76618 | 933 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
934 | break; |
935 | ||
6a885fd0 | 936 | case MFF_IP_PROTO: |
81a76618 | 937 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
938 | break; |
939 | ||
530180fd | 940 | case MFF_IP_DSCP: |
81a76618 | 941 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
942 | break; |
943 | ||
1638b906 BP |
944 | case MFF_IP_DSCP_SHIFTED: |
945 | match_set_nw_dscp(match, value->u8 << 2); | |
946 | break; | |
947 | ||
530180fd | 948 | case MFF_IP_ECN: |
81a76618 | 949 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
950 | break; |
951 | ||
a61680c6 | 952 | case MFF_IP_TTL: |
81a76618 | 953 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
954 | break; |
955 | ||
7257b535 | 956 | case MFF_IP_FRAG: |
81a76618 | 957 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
958 | break; |
959 | ||
6a885fd0 | 960 | case MFF_ARP_OP: |
81a76618 | 961 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
962 | break; |
963 | ||
964 | case MFF_ARP_SPA: | |
81a76618 | 965 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
966 | break; |
967 | ||
968 | case MFF_ARP_TPA: | |
81a76618 | 969 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
970 | break; |
971 | ||
972 | case MFF_ARP_SHA: | |
973 | case MFF_ND_SLL: | |
81a76618 | 974 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
975 | break; |
976 | ||
977 | case MFF_ARP_THA: | |
978 | case MFF_ND_TLL: | |
81a76618 | 979 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
980 | break; |
981 | ||
982 | case MFF_TCP_SRC: | |
6a885fd0 | 983 | case MFF_UDP_SRC: |
0d56eaf2 | 984 | case MFF_SCTP_SRC: |
81a76618 | 985 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
986 | break; |
987 | ||
71baec06 | 988 | case MFF_TCP_DST: |
6a885fd0 | 989 | case MFF_UDP_DST: |
0d56eaf2 | 990 | case MFF_SCTP_DST: |
81a76618 | 991 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
992 | break; |
993 | ||
dc235f7f JR |
994 | case MFF_TCP_FLAGS: |
995 | match_set_tcp_flags(match, value->be16); | |
996 | break; | |
997 | ||
268a95e0 BP |
998 | case MFF_ICMPV4_TYPE: |
999 | case MFF_ICMPV6_TYPE: | |
81a76618 | 1000 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
1001 | break; |
1002 | ||
268a95e0 BP |
1003 | case MFF_ICMPV4_CODE: |
1004 | case MFF_ICMPV6_CODE: | |
81a76618 | 1005 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
1006 | break; |
1007 | ||
1008 | case MFF_ND_TARGET: | |
81a76618 | 1009 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
1010 | break; |
1011 | ||
1012 | case MFF_N_IDS: | |
1013 | default: | |
428b2edd | 1014 | OVS_NOT_REACHED(); |
6a885fd0 BP |
1015 | } |
1016 | } | |
1017 | ||
5a0a5702 GS |
1018 | /* Unwildcard 'mask' member field described by 'mf'. The caller is |
1019 | * responsible for ensuring that 'mask' meets 'mf''s prerequisites. */ | |
1020 | void | |
1021 | mf_mask_field(const struct mf_field *mf, struct flow *mask) | |
1022 | { | |
4531547f JG |
1023 | union mf_value exact_match_mask; |
1024 | ||
1025 | memset(&exact_match_mask, 0xff, sizeof exact_match_mask); | |
5a0a5702 GS |
1026 | |
1027 | /* For MFF_DL_VLAN, we cannot send a all 1's to flow_set_dl_vlan() | |
1028 | * as that will be considered as OFP10_VLAN_NONE. So consider it as a | |
1029 | * special case. For the rest, calling mf_set_flow_value() is good | |
1030 | * enough. */ | |
1031 | if (mf->id == MFF_DL_VLAN) { | |
1032 | flow_set_dl_vlan(mask, htons(VLAN_VID_MASK)); | |
1033 | } else { | |
1034 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
1035 | } | |
1036 | } | |
1037 | ||
4ede8c79 JG |
1038 | static int |
1039 | field_len(const struct mf_field *mf, const union mf_value *value_) | |
1040 | { | |
1041 | const uint8_t *value = &value_->u8; | |
1042 | int i; | |
1043 | ||
1044 | if (!mf->variable_len) { | |
1045 | return mf->n_bytes; | |
1046 | } | |
1047 | ||
1048 | if (!value) { | |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | for (i = 0; i < mf->n_bytes; i++) { | |
1053 | if (value[i] != 0) { | |
1054 | break; | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | return mf->n_bytes - i; | |
1059 | } | |
1060 | ||
1061 | /* Returns the effective length of the field. For fixed length fields, | |
1062 | * this is just the defined length. For variable length fields, it is | |
1063 | * the minimum size encoding that retains the same meaning (i.e. | |
1064 | * discarding leading zeros). */ | |
1065 | int | |
1066 | mf_field_len(const struct mf_field *mf, const union mf_value *value, | |
1067 | const union mf_value *mask) | |
1068 | { | |
1069 | int len, mask_len; | |
1070 | ||
1071 | len = field_len(mf, value); | |
1072 | if (mask && !is_all_ones(mask, mf->n_bytes)) { | |
1073 | mask_len = field_len(mf, mask); | |
1074 | len = MAX(len, mask_len); | |
1075 | } | |
1076 | ||
1077 | return len; | |
1078 | } | |
1079 | ||
910fb1d8 JP |
1080 | /* Sets 'flow' member field described by 'mf' to 'value'. The caller is |
1081 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/ | |
28da1f8f BP |
1082 | void |
1083 | mf_set_flow_value(const struct mf_field *mf, | |
1084 | const union mf_value *value, struct flow *flow) | |
1085 | { | |
1086 | switch (mf->id) { | |
a79f29f2 AZ |
1087 | case MFF_DP_HASH: |
1088 | flow->dp_hash = ntohl(value->be32); | |
1089 | break; | |
1090 | case MFF_RECIRC_ID: | |
1091 | flow->recirc_id = ntohl(value->be32); | |
1092 | break; | |
18080541 BP |
1093 | case MFF_CONJ_ID: |
1094 | flow->conj_id = ntohl(value->be32); | |
1095 | break; | |
28da1f8f | 1096 | case MFF_TUN_ID: |
296e07ac | 1097 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 1098 | break; |
4fe3445a PS |
1099 | case MFF_TUN_SRC: |
1100 | flow->tunnel.ip_src = value->be32; | |
1101 | break; | |
1102 | case MFF_TUN_DST: | |
1103 | flow->tunnel.ip_dst = value->be32; | |
1104 | break; | |
1105 | case MFF_TUN_FLAGS: | |
b666962b JG |
1106 | flow->tunnel.flags = (flow->tunnel.flags & ~FLOW_TNL_PUB_F_MASK) | |
1107 | ntohs(value->be16); | |
4fe3445a | 1108 | break; |
ac6073e3 MC |
1109 | case MFF_TUN_GBP_ID: |
1110 | flow->tunnel.gbp_id = value->be16; | |
1111 | break; | |
1112 | case MFF_TUN_GBP_FLAGS: | |
1113 | flow->tunnel.gbp_flags = value->u8; | |
1114 | break; | |
4fe3445a PS |
1115 | case MFF_TUN_TOS: |
1116 | flow->tunnel.ip_tos = value->u8; | |
1117 | break; | |
1118 | case MFF_TUN_TTL: | |
1119 | flow->tunnel.ip_ttl = value->u8; | |
1120 | break; | |
9558d2a5 | 1121 | CASE_MFF_TUN_METADATA: |
6728d578 | 1122 | tun_metadata_write(&flow->tunnel, mf, value); |
1aaf0ada | 1123 | break; |
969fc56c JS |
1124 | case MFF_METADATA: |
1125 | flow->metadata = value->be64; | |
1126 | break; | |
28da1f8f BP |
1127 | |
1128 | case MFF_IN_PORT: | |
4e022ec0 | 1129 | flow->in_port.ofp_port = u16_to_ofp(ntohs(value->be16)); |
28da1f8f BP |
1130 | break; |
1131 | ||
c61f3870 BP |
1132 | case MFF_IN_PORT_OXM: |
1133 | ofputil_port_from_ofp11(value->be32, &flow->in_port.ofp_port); | |
1134 | break; | |
1135 | case MFF_ACTSET_OUTPUT: | |
1136 | ofputil_port_from_ofp11(value->be32, &flow->actset_output); | |
72333065 | 1137 | break; |
72333065 | 1138 | |
1b567fb9 AA |
1139 | case MFF_SKB_PRIORITY: |
1140 | flow->skb_priority = ntohl(value->be32); | |
1141 | break; | |
1142 | ||
1362e248 JG |
1143 | case MFF_PKT_MARK: |
1144 | flow->pkt_mark = ntohl(value->be32); | |
1b567fb9 AA |
1145 | break; |
1146 | ||
0d7e2fe4 | 1147 | CASE_MFF_REGS: |
28da1f8f BP |
1148 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
1149 | break; | |
28da1f8f | 1150 | |
79fe0f46 BP |
1151 | CASE_MFF_XREGS: |
1152 | flow_set_xreg(flow, mf->id - MFF_XREG0, ntohll(value->be64)); | |
1153 | break; | |
1154 | ||
28da1f8f BP |
1155 | case MFF_ETH_SRC: |
1156 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
1157 | break; | |
1158 | ||
1159 | case MFF_ETH_DST: | |
b5a36e38 | 1160 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
1161 | break; |
1162 | ||
1163 | case MFF_ETH_TYPE: | |
1164 | flow->dl_type = value->be16; | |
1165 | break; | |
1166 | ||
1167 | case MFF_VLAN_TCI: | |
1168 | flow->vlan_tci = value->be16; | |
1169 | break; | |
1170 | ||
441c57a9 | 1171 | case MFF_DL_VLAN: |
fb0451d9 | 1172 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 1173 | break; |
cc34bc8c BP |
1174 | case MFF_VLAN_VID: |
1175 | flow_set_vlan_vid(flow, value->be16); | |
1176 | break; | |
28da1f8f | 1177 | |
441c57a9 | 1178 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1179 | case MFF_VLAN_PCP: |
28da1f8f BP |
1180 | flow_set_vlan_pcp(flow, value->u8); |
1181 | break; | |
1182 | ||
b02475c5 | 1183 | case MFF_MPLS_LABEL: |
8bfd0fda | 1184 | flow_set_mpls_label(flow, 0, value->be32); |
b02475c5 SH |
1185 | break; |
1186 | ||
1187 | case MFF_MPLS_TC: | |
8bfd0fda | 1188 | flow_set_mpls_tc(flow, 0, value->u8); |
b02475c5 SH |
1189 | break; |
1190 | ||
1191 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1192 | flow_set_mpls_bos(flow, 0, value->u8); |
1193 | break; | |
b02475c5 | 1194 | |
28da1f8f BP |
1195 | case MFF_IPV4_SRC: |
1196 | flow->nw_src = value->be32; | |
1197 | break; | |
1198 | ||
1199 | case MFF_IPV4_DST: | |
1200 | flow->nw_dst = value->be32; | |
1201 | break; | |
1202 | ||
1203 | case MFF_IPV6_SRC: | |
1204 | flow->ipv6_src = value->ipv6; | |
1205 | break; | |
1206 | ||
1207 | case MFF_IPV6_DST: | |
1208 | flow->ipv6_dst = value->ipv6; | |
1209 | break; | |
1210 | ||
1211 | case MFF_IPV6_LABEL: | |
88cc95c1 | 1212 | flow->ipv6_label = value->be32 & htonl(IPV6_LABEL_MASK); |
28da1f8f BP |
1213 | break; |
1214 | ||
1215 | case MFF_IP_PROTO: | |
1216 | flow->nw_proto = value->u8; | |
1217 | break; | |
1218 | ||
1219 | case MFF_IP_DSCP: | |
1220 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1221 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1222 | break; | |
1223 | ||
1638b906 BP |
1224 | case MFF_IP_DSCP_SHIFTED: |
1225 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1226 | flow->nw_tos |= value->u8 << 2; | |
1227 | break; | |
1228 | ||
28da1f8f BP |
1229 | case MFF_IP_ECN: |
1230 | flow->nw_tos &= ~IP_ECN_MASK; | |
1231 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1232 | break; | |
1233 | ||
1234 | case MFF_IP_TTL: | |
1235 | flow->nw_ttl = value->u8; | |
1236 | break; | |
1237 | ||
1238 | case MFF_IP_FRAG: | |
c8abb8af | 1239 | flow->nw_frag = value->u8 & FLOW_NW_FRAG_MASK; |
28da1f8f BP |
1240 | break; |
1241 | ||
1242 | case MFF_ARP_OP: | |
1243 | flow->nw_proto = ntohs(value->be16); | |
1244 | break; | |
1245 | ||
1246 | case MFF_ARP_SPA: | |
1247 | flow->nw_src = value->be32; | |
1248 | break; | |
1249 | ||
1250 | case MFF_ARP_TPA: | |
1251 | flow->nw_dst = value->be32; | |
1252 | break; | |
1253 | ||
1254 | case MFF_ARP_SHA: | |
1255 | case MFF_ND_SLL: | |
1256 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1257 | break; | |
1258 | ||
1259 | case MFF_ARP_THA: | |
1260 | case MFF_ND_TLL: | |
1261 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1262 | break; | |
1263 | ||
1264 | case MFF_TCP_SRC: | |
1265 | case MFF_UDP_SRC: | |
0d56eaf2 | 1266 | case MFF_SCTP_SRC: |
28da1f8f BP |
1267 | flow->tp_src = value->be16; |
1268 | break; | |
1269 | ||
1270 | case MFF_TCP_DST: | |
1271 | case MFF_UDP_DST: | |
0d56eaf2 | 1272 | case MFF_SCTP_DST: |
28da1f8f BP |
1273 | flow->tp_dst = value->be16; |
1274 | break; | |
1275 | ||
dc235f7f JR |
1276 | case MFF_TCP_FLAGS: |
1277 | flow->tcp_flags = value->be16; | |
1278 | break; | |
1279 | ||
28da1f8f BP |
1280 | case MFF_ICMPV4_TYPE: |
1281 | case MFF_ICMPV6_TYPE: | |
1282 | flow->tp_src = htons(value->u8); | |
1283 | break; | |
1284 | ||
1285 | case MFF_ICMPV4_CODE: | |
1286 | case MFF_ICMPV6_CODE: | |
1287 | flow->tp_dst = htons(value->u8); | |
1288 | break; | |
1289 | ||
1290 | case MFF_ND_TARGET: | |
1291 | flow->nd_target = value->ipv6; | |
1292 | break; | |
1293 | ||
1294 | case MFF_N_IDS: | |
1295 | default: | |
428b2edd | 1296 | OVS_NOT_REACHED(); |
28da1f8f BP |
1297 | } |
1298 | } | |
1299 | ||
7eb4b1f1 BP |
1300 | /* Consider each of 'src', 'mask', and 'dst' as if they were arrays of 8*n |
1301 | * bits. Then, for each 0 <= i < 8 * n such that mask[i] == 1, sets dst[i] = | |
1302 | * src[i]. */ | |
1303 | static void | |
1304 | apply_mask(const uint8_t *src, const uint8_t *mask, uint8_t *dst, size_t n) | |
1305 | { | |
1306 | size_t i; | |
1307 | ||
1308 | for (i = 0; i < n; i++) { | |
1309 | dst[i] = (src[i] & mask[i]) | (dst[i] & ~mask[i]); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | /* Sets 'flow' member field described by 'field' to 'value', except that bits | |
1314 | * for which 'mask' has a 0-bit keep their existing values. The caller is | |
1315 | * responsible for ensuring that 'flow' meets 'field''s prerequisites.*/ | |
1316 | void | |
1317 | mf_set_flow_value_masked(const struct mf_field *field, | |
1318 | const union mf_value *value, | |
1319 | const union mf_value *mask, | |
1320 | struct flow *flow) | |
1321 | { | |
1322 | union mf_value tmp; | |
1323 | ||
1324 | mf_get_value(field, flow, &tmp); | |
1325 | apply_mask((const uint8_t *) value, (const uint8_t *) mask, | |
1326 | (uint8_t *) &tmp, field->n_bytes); | |
1327 | mf_set_flow_value(field, &tmp, flow); | |
1328 | } | |
1329 | ||
ccbe50f8 BP |
1330 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1331 | * | |
1332 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1333 | * prerequisites. */ | |
1334 | bool | |
1335 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1336 | { | |
1337 | union mf_value value; | |
1338 | ||
1339 | mf_get_value(mf, flow, &value); | |
53cb9c3e | 1340 | return is_all_zeros(&value, mf->n_bytes); |
ccbe50f8 BP |
1341 | } |
1342 | ||
81a76618 | 1343 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1344 | * |
81a76618 | 1345 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1346 | * prerequisites. */ |
1347 | void | |
81a76618 | 1348 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1349 | { |
1350 | switch (mf->id) { | |
a79f29f2 AZ |
1351 | case MFF_DP_HASH: |
1352 | match->flow.dp_hash = 0; | |
1353 | match->wc.masks.dp_hash = 0; | |
1354 | break; | |
1355 | case MFF_RECIRC_ID: | |
1356 | match->flow.recirc_id = 0; | |
1357 | match->wc.masks.recirc_id = 0; | |
1358 | break; | |
18080541 BP |
1359 | case MFF_CONJ_ID: |
1360 | match->flow.conj_id = 0; | |
1361 | match->wc.masks.conj_id = 0; | |
1362 | break; | |
6a885fd0 | 1363 | case MFF_TUN_ID: |
81a76618 | 1364 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1365 | break; |
4fe3445a PS |
1366 | case MFF_TUN_SRC: |
1367 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1368 | break; | |
1369 | case MFF_TUN_DST: | |
1370 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1371 | break; | |
1372 | case MFF_TUN_FLAGS: | |
1373 | match_set_tun_flags_masked(match, 0, 0); | |
1374 | break; | |
ac6073e3 MC |
1375 | case MFF_TUN_GBP_ID: |
1376 | match_set_tun_gbp_id_masked(match, 0, 0); | |
1377 | break; | |
1378 | case MFF_TUN_GBP_FLAGS: | |
1379 | match_set_tun_gbp_flags_masked(match, 0, 0); | |
1380 | break; | |
4fe3445a PS |
1381 | case MFF_TUN_TOS: |
1382 | match_set_tun_tos_masked(match, 0, 0); | |
1383 | break; | |
1384 | case MFF_TUN_TTL: | |
1385 | match_set_tun_ttl_masked(match, 0, 0); | |
1386 | break; | |
9558d2a5 JG |
1387 | CASE_MFF_TUN_METADATA: |
1388 | tun_metadata_set_match(mf, NULL, NULL, match); | |
1389 | break; | |
4fe3445a | 1390 | |
969fc56c | 1391 | case MFF_METADATA: |
81a76618 | 1392 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
801d2b2a | 1393 | break; |
6a885fd0 BP |
1394 | |
1395 | case MFF_IN_PORT: | |
72333065 | 1396 | case MFF_IN_PORT_OXM: |
4e022ec0 AW |
1397 | match->flow.in_port.ofp_port = 0; |
1398 | match->wc.masks.in_port.ofp_port = 0; | |
6a885fd0 | 1399 | break; |
c61f3870 BP |
1400 | case MFF_ACTSET_OUTPUT: |
1401 | match->flow.actset_output = 0; | |
1402 | match->wc.masks.actset_output = 0; | |
1403 | break; | |
6a885fd0 | 1404 | |
1b567fb9 AA |
1405 | case MFF_SKB_PRIORITY: |
1406 | match->flow.skb_priority = 0; | |
1407 | match->wc.masks.skb_priority = 0; | |
1408 | break; | |
1409 | ||
1362e248 JG |
1410 | case MFF_PKT_MARK: |
1411 | match->flow.pkt_mark = 0; | |
1412 | match->wc.masks.pkt_mark = 0; | |
1b567fb9 AA |
1413 | break; |
1414 | ||
0d7e2fe4 | 1415 | CASE_MFF_REGS: |
81a76618 | 1416 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1417 | break; |
6a885fd0 | 1418 | |
79fe0f46 BP |
1419 | CASE_MFF_XREGS: |
1420 | match_set_xreg_masked(match, mf->id - MFF_XREG0, 0, 0); | |
1421 | break; | |
1422 | ||
6a885fd0 | 1423 | case MFF_ETH_SRC: |
81a76618 BP |
1424 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1425 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1426 | break; |
1427 | ||
1428 | case MFF_ETH_DST: | |
81a76618 BP |
1429 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1430 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1431 | break; |
1432 | ||
1433 | case MFF_ETH_TYPE: | |
81a76618 BP |
1434 | match->flow.dl_type = htons(0); |
1435 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1436 | break; |
1437 | ||
1438 | case MFF_VLAN_TCI: | |
81a76618 | 1439 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1440 | break; |
1441 | ||
441c57a9 | 1442 | case MFF_DL_VLAN: |
cc34bc8c | 1443 | case MFF_VLAN_VID: |
81a76618 | 1444 | match_set_any_vid(match); |
6a885fd0 BP |
1445 | break; |
1446 | ||
441c57a9 | 1447 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1448 | case MFF_VLAN_PCP: |
81a76618 | 1449 | match_set_any_pcp(match); |
6a885fd0 BP |
1450 | break; |
1451 | ||
b02475c5 | 1452 | case MFF_MPLS_LABEL: |
8bfd0fda | 1453 | match_set_any_mpls_label(match, 0); |
b02475c5 SH |
1454 | break; |
1455 | ||
1456 | case MFF_MPLS_TC: | |
8bfd0fda | 1457 | match_set_any_mpls_tc(match, 0); |
b02475c5 SH |
1458 | break; |
1459 | ||
1460 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1461 | match_set_any_mpls_bos(match, 0); |
1462 | break; | |
b02475c5 | 1463 | |
6a885fd0 BP |
1464 | case MFF_IPV4_SRC: |
1465 | case MFF_ARP_SPA: | |
81a76618 | 1466 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1467 | break; |
1468 | ||
1469 | case MFF_IPV4_DST: | |
1470 | case MFF_ARP_TPA: | |
81a76618 | 1471 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1472 | break; |
1473 | ||
1474 | case MFF_IPV6_SRC: | |
81a76618 BP |
1475 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1476 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1477 | break; |
1478 | ||
1479 | case MFF_IPV6_DST: | |
81a76618 BP |
1480 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1481 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1482 | break; |
1483 | ||
fa8223b7 | 1484 | case MFF_IPV6_LABEL: |
81a76618 BP |
1485 | match->wc.masks.ipv6_label = htonl(0); |
1486 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1487 | break; |
1488 | ||
6a885fd0 | 1489 | case MFF_IP_PROTO: |
81a76618 BP |
1490 | match->wc.masks.nw_proto = 0; |
1491 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1492 | break; |
1493 | ||
530180fd | 1494 | case MFF_IP_DSCP: |
1638b906 | 1495 | case MFF_IP_DSCP_SHIFTED: |
81a76618 BP |
1496 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1497 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1498 | break; |
1499 | ||
530180fd | 1500 | case MFF_IP_ECN: |
81a76618 BP |
1501 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1502 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1503 | break; |
1504 | ||
a61680c6 | 1505 | case MFF_IP_TTL: |
81a76618 BP |
1506 | match->wc.masks.nw_ttl = 0; |
1507 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1508 | break; |
1509 | ||
7257b535 | 1510 | case MFF_IP_FRAG: |
6ca49d5e | 1511 | match->wc.masks.nw_frag &= ~FLOW_NW_FRAG_MASK; |
81a76618 | 1512 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; |
6a885fd0 BP |
1513 | break; |
1514 | ||
1515 | case MFF_ARP_OP: | |
81a76618 BP |
1516 | match->wc.masks.nw_proto = 0; |
1517 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1518 | break; |
1519 | ||
1520 | case MFF_ARP_SHA: | |
1521 | case MFF_ND_SLL: | |
81a76618 BP |
1522 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1523 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1524 | break; |
1525 | ||
1526 | case MFF_ARP_THA: | |
1527 | case MFF_ND_TLL: | |
81a76618 BP |
1528 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1529 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1530 | break; |
1531 | ||
1532 | case MFF_TCP_SRC: | |
1533 | case MFF_UDP_SRC: | |
0d56eaf2 | 1534 | case MFF_SCTP_SRC: |
268a95e0 BP |
1535 | case MFF_ICMPV4_TYPE: |
1536 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1537 | match->wc.masks.tp_src = htons(0); |
1538 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1539 | break; |
1540 | ||
1541 | case MFF_TCP_DST: | |
1542 | case MFF_UDP_DST: | |
0d56eaf2 | 1543 | case MFF_SCTP_DST: |
268a95e0 BP |
1544 | case MFF_ICMPV4_CODE: |
1545 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1546 | match->wc.masks.tp_dst = htons(0); |
1547 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1548 | break; |
1549 | ||
dc235f7f JR |
1550 | case MFF_TCP_FLAGS: |
1551 | match->wc.masks.tcp_flags = htons(0); | |
1552 | match->flow.tcp_flags = htons(0); | |
1553 | break; | |
1554 | ||
6a885fd0 | 1555 | case MFF_ND_TARGET: |
81a76618 BP |
1556 | memset(&match->wc.masks.nd_target, 0, |
1557 | sizeof match->wc.masks.nd_target); | |
1558 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1559 | break; |
1560 | ||
1561 | case MFF_N_IDS: | |
1562 | default: | |
428b2edd | 1563 | OVS_NOT_REACHED(); |
6a885fd0 BP |
1564 | } |
1565 | } | |
1566 | ||
81a76618 | 1567 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1568 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1569 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1570 | * 0-bit indicating a don't-care. | |
1571 | * | |
1572 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1573 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1574 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1575 | * |
1576 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1577 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
db0b6c29 | 1578 | enum ofputil_protocol |
6a885fd0 BP |
1579 | mf_set(const struct mf_field *mf, |
1580 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1581 | struct match *match) |
6a885fd0 | 1582 | { |
53cb9c3e | 1583 | if (!mask || is_all_ones(mask, mf->n_bytes)) { |
81a76618 | 1584 | mf_set_value(mf, value, match); |
a4ce8b25 | 1585 | return mf->usable_protocols_exact; |
53cb9c3e | 1586 | } else if (is_all_zeros(mask, mf->n_bytes)) { |
81a76618 | 1587 | mf_set_wild(mf, match); |
db0b6c29 | 1588 | return OFPUTIL_P_ANY; |
6a885fd0 BP |
1589 | } |
1590 | ||
1591 | switch (mf->id) { | |
a79f29f2 | 1592 | case MFF_RECIRC_ID: |
18080541 | 1593 | case MFF_CONJ_ID: |
6a885fd0 | 1594 | case MFF_IN_PORT: |
72333065 | 1595 | case MFF_IN_PORT_OXM: |
c61f3870 | 1596 | case MFF_ACTSET_OUTPUT: |
1b567fb9 | 1597 | case MFF_SKB_PRIORITY: |
6a885fd0 | 1598 | case MFF_ETH_TYPE: |
441c57a9 BP |
1599 | case MFF_DL_VLAN: |
1600 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1601 | case MFF_VLAN_PCP: |
b02475c5 SH |
1602 | case MFF_MPLS_LABEL: |
1603 | case MFF_MPLS_TC: | |
1604 | case MFF_MPLS_BOS: | |
6a885fd0 | 1605 | case MFF_IP_PROTO: |
a61680c6 | 1606 | case MFF_IP_TTL: |
530180fd | 1607 | case MFF_IP_DSCP: |
1638b906 | 1608 | case MFF_IP_DSCP_SHIFTED: |
530180fd | 1609 | case MFF_IP_ECN: |
6a885fd0 | 1610 | case MFF_ARP_OP: |
268a95e0 BP |
1611 | case MFF_ICMPV4_TYPE: |
1612 | case MFF_ICMPV4_CODE: | |
1613 | case MFF_ICMPV6_TYPE: | |
1614 | case MFF_ICMPV6_CODE: | |
af69bf19 | 1615 | return OFPUTIL_P_NONE; |
6a885fd0 | 1616 | |
a79f29f2 AZ |
1617 | case MFF_DP_HASH: |
1618 | match_set_dp_hash_masked(match, ntohl(value->be32), ntohl(mask->be32)); | |
1619 | break; | |
6a885fd0 | 1620 | case MFF_TUN_ID: |
81a76618 | 1621 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1622 | break; |
4fe3445a PS |
1623 | case MFF_TUN_SRC: |
1624 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1625 | break; | |
1626 | case MFF_TUN_DST: | |
1627 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1628 | break; | |
1629 | case MFF_TUN_FLAGS: | |
1630 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1631 | break; | |
ac6073e3 MC |
1632 | case MFF_TUN_GBP_ID: |
1633 | match_set_tun_gbp_id_masked(match, value->be16, mask->be16); | |
1634 | break; | |
1635 | case MFF_TUN_GBP_FLAGS: | |
1636 | match_set_tun_gbp_flags_masked(match, value->u8, mask->u8); | |
1637 | break; | |
4fe3445a PS |
1638 | case MFF_TUN_TTL: |
1639 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1640 | break; | |
1641 | case MFF_TUN_TOS: | |
1642 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1643 | break; | |
9558d2a5 JG |
1644 | CASE_MFF_TUN_METADATA: |
1645 | tun_metadata_set_match(mf, value, mask, match); | |
1646 | break; | |
4fe3445a | 1647 | |
969fc56c | 1648 | case MFF_METADATA: |
81a76618 | 1649 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1650 | break; |
6a885fd0 | 1651 | |
0d7e2fe4 | 1652 | CASE_MFF_REGS: |
81a76618 BP |
1653 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1654 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 | 1655 | break; |
ac923e91 | 1656 | |
79fe0f46 BP |
1657 | CASE_MFF_XREGS: |
1658 | match_set_xreg_masked(match, mf->id - MFF_XREG0, | |
1659 | ntohll(value->be64), ntohll(mask->be64)); | |
1660 | break; | |
1661 | ||
ac923e91 JG |
1662 | case MFF_PKT_MARK: |
1663 | match_set_pkt_mark_masked(match, ntohl(value->be32), | |
1664 | ntohl(mask->be32)); | |
1665 | break; | |
6a885fd0 BP |
1666 | |
1667 | case MFF_ETH_DST: | |
81a76618 | 1668 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1669 | break; |
1670 | ||
1671 | case MFF_ETH_SRC: | |
81a76618 | 1672 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1673 | break; |
1674 | ||
e878338b SH |
1675 | case MFF_ARP_SHA: |
1676 | case MFF_ND_SLL: | |
81a76618 | 1677 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1678 | break; |
1679 | ||
1680 | case MFF_ARP_THA: | |
1681 | case MFF_ND_TLL: | |
81a76618 | 1682 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1683 | break; |
1684 | ||
6a885fd0 | 1685 | case MFF_VLAN_TCI: |
81a76618 | 1686 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1687 | break; |
1688 | ||
cc34bc8c | 1689 | case MFF_VLAN_VID: |
81a76618 | 1690 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1691 | break; |
1692 | ||
6a885fd0 | 1693 | case MFF_IPV4_SRC: |
81a76618 | 1694 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1695 | break; |
6a885fd0 BP |
1696 | |
1697 | case MFF_IPV4_DST: | |
81a76618 | 1698 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1699 | break; |
6a885fd0 BP |
1700 | |
1701 | case MFF_IPV6_SRC: | |
81a76618 | 1702 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1703 | break; |
1704 | ||
1705 | case MFF_IPV6_DST: | |
81a76618 | 1706 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1707 | break; |
1708 | ||
32455024 SH |
1709 | case MFF_IPV6_LABEL: |
1710 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1711 | mf_set_value(mf, value, match); |
32455024 | 1712 | } else { |
81a76618 | 1713 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1714 | } |
1715 | break; | |
1716 | ||
47284b1f | 1717 | case MFF_ND_TARGET: |
81a76618 | 1718 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1719 | break; |
1720 | ||
7257b535 | 1721 | case MFF_IP_FRAG: |
81a76618 | 1722 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1723 | break; |
1724 | ||
6a885fd0 | 1725 | case MFF_ARP_SPA: |
81a76618 | 1726 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1727 | break; |
6a885fd0 BP |
1728 | |
1729 | case MFF_ARP_TPA: | |
81a76618 | 1730 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1731 | break; |
6a885fd0 | 1732 | |
73f33563 BP |
1733 | case MFF_TCP_SRC: |
1734 | case MFF_UDP_SRC: | |
0d56eaf2 | 1735 | case MFF_SCTP_SRC: |
81a76618 | 1736 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1737 | break; |
1738 | ||
1739 | case MFF_TCP_DST: | |
1740 | case MFF_UDP_DST: | |
0d56eaf2 | 1741 | case MFF_SCTP_DST: |
81a76618 | 1742 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1743 | break; |
1744 | ||
dc235f7f JR |
1745 | case MFF_TCP_FLAGS: |
1746 | match_set_tcp_flags_masked(match, value->be16, mask->be16); | |
1747 | break; | |
1748 | ||
6a885fd0 BP |
1749 | case MFF_N_IDS: |
1750 | default: | |
428b2edd | 1751 | OVS_NOT_REACHED(); |
6a885fd0 | 1752 | } |
db0b6c29 | 1753 | |
a4ce8b25 BP |
1754 | return ((mf->usable_protocols_bitwise == mf->usable_protocols_cidr |
1755 | || ip_is_cidr(mask->be32)) | |
1756 | ? mf->usable_protocols_cidr | |
1757 | : mf->usable_protocols_bitwise); | |
6a885fd0 BP |
1758 | } |
1759 | ||
816fd533 BP |
1760 | static enum ofperr |
1761 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1762 | const char *type) | |
6a885fd0 | 1763 | { |
816fd533 BP |
1764 | if (!sf->field) { |
1765 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
9e404d1e | 1766 | return OFPERR_OFPBAC_BAD_SET_TYPE; |
816fd533 BP |
1767 | } else if (!sf->n_bits) { |
1768 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
9e404d1e | 1769 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1770 | } else if (sf->ofs >= sf->field->n_bits) { |
1771 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1772 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1773 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1774 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { |
1775 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1776 | "of %s field %s", sf->ofs, sf->n_bits, | |
1777 | sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1778 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1779 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { |
1780 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1781 | type, sf->field->name); | |
9e404d1e | 1782 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
6a885fd0 | 1783 | } else { |
816fd533 BP |
1784 | return 0; |
1785 | } | |
816fd533 | 1786 | } |
6a885fd0 | 1787 | |
816fd533 BP |
1788 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1789 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1790 | * ofp_mkerr()). */ | |
1791 | enum ofperr | |
1792 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1793 | { | |
1794 | return mf_check__(sf, flow, "source"); | |
1795 | } | |
6a885fd0 | 1796 | |
816fd533 BP |
1797 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1798 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1799 | * ofp_mkerr()). */ | |
1800 | enum ofperr | |
1801 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1802 | { | |
1803 | int error = mf_check__(sf, flow, "destination"); | |
1804 | if (!error && !sf->field->writable) { | |
1805 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1806 | sf->field->name); | |
9e404d1e | 1807 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
6a885fd0 | 1808 | } |
816fd533 | 1809 | return error; |
6a885fd0 BP |
1810 | } |
1811 | ||
81a76618 | 1812 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1813 | * 'value' and 'mask', respectively. */ |
1814 | void | |
81a76618 | 1815 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1816 | union mf_value *value, union mf_value *mask) |
1817 | { | |
81a76618 BP |
1818 | mf_get_value(mf, &match->flow, value); |
1819 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1820 | } |
1821 | ||
6a885fd0 BP |
1822 | static char * |
1823 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1824 | uint8_t *valuep, uint8_t *maskp) | |
1825 | { | |
6a885fd0 | 1826 | char *tail; |
1734bf29 JG |
1827 | const char *err_str = ""; |
1828 | int err; | |
6a885fd0 | 1829 | |
1734bf29 JG |
1830 | err = parse_int_string(s, valuep, mf->n_bytes, &tail); |
1831 | if (err || (*tail != '\0' && *tail != '/')) { | |
1832 | err_str = "value"; | |
6a885fd0 BP |
1833 | goto syntax_error; |
1834 | } | |
1835 | ||
1836 | if (*tail == '/') { | |
1734bf29 JG |
1837 | err = parse_int_string(tail + 1, maskp, mf->n_bytes, &tail); |
1838 | if (err || *tail != '\0') { | |
1839 | err_str = "mask"; | |
6a885fd0 BP |
1840 | goto syntax_error; |
1841 | } | |
1842 | } else { | |
1734bf29 | 1843 | memset(maskp, 0xff, mf->n_bytes); |
6a885fd0 BP |
1844 | } |
1845 | ||
6a885fd0 BP |
1846 | return NULL; |
1847 | ||
1848 | syntax_error: | |
1734bf29 JG |
1849 | if (err == ERANGE) { |
1850 | return xasprintf("%s: %s too large for %u-byte field %s", | |
1851 | s, err_str, mf->n_bytes, mf->name); | |
1852 | } else { | |
1853 | return xasprintf("%s: bad syntax for %s %s", s, mf->name, err_str); | |
1854 | } | |
6a885fd0 BP |
1855 | } |
1856 | ||
1857 | static char * | |
1858 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1859 | uint8_t mac[ETH_ADDR_LEN], | |
1860 | uint8_t mask[ETH_ADDR_LEN]) | |
1861 | { | |
279fb135 | 1862 | int n; |
6a885fd0 | 1863 | |
279fb135 | 1864 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 | 1865 | |
279fb135 | 1866 | n = -1; |
c2c28dfd | 1867 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n) |
279fb135 | 1868 | && n == strlen(s)) { |
6a885fd0 BP |
1869 | memset(mask, 0xff, ETH_ADDR_LEN); |
1870 | return NULL; | |
279fb135 | 1871 | } |
6a885fd0 | 1872 | |
279fb135 | 1873 | n = -1; |
c2c28dfd BP |
1874 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n", |
1875 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n) | |
279fb135 BP |
1876 | && n == strlen(s)) { |
1877 | return NULL; | |
6a885fd0 | 1878 | } |
279fb135 BP |
1879 | |
1880 | return xasprintf("%s: invalid Ethernet address", s); | |
6a885fd0 BP |
1881 | } |
1882 | ||
1883 | static char * | |
1884 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1885 | ovs_be32 *ip, ovs_be32 *mask) | |
1886 | { | |
1887 | int prefix; | |
1888 | ||
cb22974d | 1889 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 | 1890 | |
c2c28dfd BP |
1891 | if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT, |
1892 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) { | |
6a885fd0 | 1893 | /* OK. */ |
c2c28dfd | 1894 | } else if (ovs_scan(s, IP_SCAN_FMT"/%d", IP_SCAN_ARGS(ip), &prefix)) { |
6a885fd0 | 1895 | if (prefix <= 0 || prefix > 32) { |
86f35fb5 | 1896 | return xasprintf("%s: network prefix bits not between 0 and " |
6a885fd0 | 1897 | "32", s); |
6a885fd0 | 1898 | } |
86f35fb5 | 1899 | *mask = be32_prefix_mask(prefix); |
c2c28dfd | 1900 | } else if (ovs_scan(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) { |
b8266395 | 1901 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
1902 | } else { |
1903 | return xasprintf("%s: invalid IP address", s); | |
1904 | } | |
1905 | return NULL; | |
1906 | } | |
1907 | ||
1908 | static char * | |
1909 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1910 | struct in6_addr *value, struct in6_addr *mask) | |
1911 | { | |
1912 | char *str = xstrdup(s); | |
1913 | char *save_ptr = NULL; | |
1914 | const char *name, *netmask; | |
1915 | int retval; | |
1916 | ||
cb22974d | 1917 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
1918 | |
1919 | name = strtok_r(str, "/", &save_ptr); | |
1920 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1921 | if (retval) { | |
1922 | char *err; | |
1923 | ||
1924 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1925 | free(str); | |
1926 | ||
1927 | return err; | |
1928 | } | |
1929 | ||
1930 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1931 | if (netmask) { | |
ff0b06ee BP |
1932 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
1933 | int prefix = atoi(netmask); | |
1934 | if (prefix <= 0 || prefix > 128) { | |
1935 | free(str); | |
1936 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
1937 | } else { | |
1938 | *mask = ipv6_create_mask(prefix); | |
1939 | } | |
6a885fd0 BP |
1940 | } |
1941 | } else { | |
1942 | *mask = in6addr_exact; | |
1943 | } | |
1944 | free(str); | |
1945 | ||
1946 | return NULL; | |
1947 | } | |
1948 | ||
1949 | static char * | |
1950 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
1951 | ovs_be16 *valuep, ovs_be16 *maskp) | |
1952 | { | |
4e022ec0 | 1953 | ofp_port_t port; |
6a885fd0 | 1954 | |
cb22974d | 1955 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
33ab38d9 JR |
1956 | |
1957 | if (ofputil_port_from_string(s, &port)) { | |
4e022ec0 | 1958 | *valuep = htons(ofp_to_u16(port)); |
b8266395 | 1959 | *maskp = OVS_BE16_MAX; |
6a885fd0 | 1960 | return NULL; |
6a885fd0 | 1961 | } |
33ab38d9 | 1962 | return xasprintf("%s: port value out of range for %s", s, mf->name); |
6a885fd0 BP |
1963 | } |
1964 | ||
72333065 JR |
1965 | static char * |
1966 | mf_from_ofp_port_string32(const struct mf_field *mf, const char *s, | |
1967 | ovs_be32 *valuep, ovs_be32 *maskp) | |
1968 | { | |
4e022ec0 | 1969 | ofp_port_t port; |
72333065 JR |
1970 | |
1971 | ovs_assert(mf->n_bytes == sizeof(ovs_be32)); | |
1972 | if (ofputil_port_from_string(s, &port)) { | |
1973 | *valuep = ofputil_port_to_ofp11(port); | |
b8266395 | 1974 | *maskp = OVS_BE32_MAX; |
72333065 JR |
1975 | return NULL; |
1976 | } | |
1977 | return xasprintf("%s: port value out of range for %s", s, mf->name); | |
1978 | } | |
1979 | ||
7257b535 BP |
1980 | struct frag_handling { |
1981 | const char *name; | |
1982 | uint8_t mask; | |
1983 | uint8_t value; | |
1984 | }; | |
1985 | ||
1986 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
1987 | #define A FLOW_NW_FRAG_ANY |
1988 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
1989 | /* name mask value */ |
1990 | ||
1991 | { "no", A|L, 0 }, | |
1992 | { "first", A|L, A }, | |
1993 | { "later", A|L, A|L }, | |
1994 | ||
1995 | { "no", A, 0 }, | |
1996 | { "yes", A, A }, | |
1997 | ||
1998 | { "not_later", L, 0 }, | |
1999 | { "later", L, L }, | |
2000 | #undef A | |
2001 | #undef L | |
2002 | }; | |
2003 | ||
2004 | static char * | |
2005 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
2006 | { | |
2007 | const struct frag_handling *h; | |
2008 | ||
2009 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2010 | if (!strcasecmp(s, h->name)) { | |
2011 | /* We force the upper bits of the mask on to make mf_parse_value() | |
2012 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 2013 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
2014 | *valuep = h->value; |
2015 | return NULL; | |
2016 | } | |
2017 | } | |
2018 | ||
2019 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
2020 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
2021 | } | |
2022 | ||
8e4c1621 JG |
2023 | static char * |
2024 | parse_mf_flags(const char *s, const char *(*bit_to_string)(uint32_t), | |
2025 | const char *field_name, ovs_be16 *flagsp, ovs_be16 allowed, | |
2026 | ovs_be16 *maskp) | |
4fe3445a | 2027 | { |
8e4c1621 JG |
2028 | int err; |
2029 | char *err_str; | |
2030 | uint32_t flags, mask; | |
4fe3445a | 2031 | |
8e4c1621 JG |
2032 | err = parse_flags(s, bit_to_string, '\0', field_name, &err_str, |
2033 | &flags, ntohs(allowed), maskp ? &mask : NULL); | |
2034 | if (err < 0) { | |
2035 | return err_str; | |
2036 | } | |
4fe3445a | 2037 | |
8e4c1621 JG |
2038 | *flagsp = htons(flags); |
2039 | if (maskp) { | |
2040 | *maskp = htons(mask); | |
4fe3445a PS |
2041 | } |
2042 | ||
8e4c1621 | 2043 | return NULL; |
4fe3445a PS |
2044 | } |
2045 | ||
2046 | static char * | |
8e4c1621 | 2047 | mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp) |
4fe3445a | 2048 | { |
8e4c1621 JG |
2049 | return parse_mf_flags(s, packet_tcp_flag_to_string, "TCP", flagsp, |
2050 | TCP_FLAGS_BE16(OVS_BE16_MAX), maskp); | |
4fe3445a PS |
2051 | } |
2052 | ||
61bf6666 | 2053 | static char * |
8e4c1621 | 2054 | mf_from_tun_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp) |
61bf6666 | 2055 | { |
8e4c1621 | 2056 | return parse_mf_flags(s, flow_tun_flag_to_string, "tunnel", flagsp, |
b666962b | 2057 | htons(FLOW_TNL_PUB_F_MASK), maskp); |
61bf6666 JR |
2058 | } |
2059 | ||
6a885fd0 BP |
2060 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
2061 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
2062 | char * | |
2063 | mf_parse(const struct mf_field *mf, const char *s, | |
2064 | union mf_value *value, union mf_value *mask) | |
2065 | { | |
3634dff8 BP |
2066 | char *error; |
2067 | ||
bedde04c | 2068 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
2069 | memset(value, 0, mf->n_bytes); |
2070 | memset(mask, 0, mf->n_bytes); | |
2071 | return NULL; | |
2072 | } | |
2073 | ||
2074 | switch (mf->string) { | |
2075 | case MFS_DECIMAL: | |
2076 | case MFS_HEXADECIMAL: | |
3634dff8 BP |
2077 | error = mf_from_integer_string(mf, s, |
2078 | (uint8_t *) value, (uint8_t *) mask); | |
2079 | break; | |
6a885fd0 BP |
2080 | |
2081 | case MFS_ETHERNET: | |
3634dff8 BP |
2082 | error = mf_from_ethernet_string(mf, s, value->mac, mask->mac); |
2083 | break; | |
6a885fd0 BP |
2084 | |
2085 | case MFS_IPV4: | |
3634dff8 BP |
2086 | error = mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); |
2087 | break; | |
6a885fd0 BP |
2088 | |
2089 | case MFS_IPV6: | |
3634dff8 BP |
2090 | error = mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); |
2091 | break; | |
6a885fd0 BP |
2092 | |
2093 | case MFS_OFP_PORT: | |
3634dff8 BP |
2094 | error = mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); |
2095 | break; | |
7257b535 | 2096 | |
72333065 | 2097 | case MFS_OFP_PORT_OXM: |
3634dff8 BP |
2098 | error = mf_from_ofp_port_string32(mf, s, &value->be32, &mask->be32); |
2099 | break; | |
72333065 | 2100 | |
7257b535 | 2101 | case MFS_FRAG: |
3634dff8 BP |
2102 | error = mf_from_frag_string(s, &value->u8, &mask->u8); |
2103 | break; | |
4fe3445a PS |
2104 | |
2105 | case MFS_TNL_FLAGS: | |
cb22974d | 2106 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
3634dff8 BP |
2107 | error = mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
2108 | break; | |
2109 | ||
61bf6666 JR |
2110 | case MFS_TCP_FLAGS: |
2111 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); | |
2112 | error = mf_from_tcp_flags_string(s, &value->be16, &mask->be16); | |
2113 | break; | |
2114 | ||
3634dff8 | 2115 | default: |
428b2edd | 2116 | OVS_NOT_REACHED(); |
6a885fd0 | 2117 | } |
3634dff8 BP |
2118 | |
2119 | if (!error && !mf_is_mask_valid(mf, mask)) { | |
2120 | error = xasprintf("%s: invalid mask for field %s", s, mf->name); | |
2121 | } | |
2122 | return error; | |
6a885fd0 BP |
2123 | } |
2124 | ||
2125 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2126 | * successful, otherwise a malloc()'d string describing the error. */ | |
2127 | char * | |
2128 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2129 | { | |
2130 | union mf_value mask; | |
2131 | char *error; | |
2132 | ||
2133 | error = mf_parse(mf, s, value, &mask); | |
2134 | if (error) { | |
2135 | return error; | |
2136 | } | |
2137 | ||
2138 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2139 | return xasprintf("%s: wildcards not allowed here", s); | |
2140 | } | |
2141 | return NULL; | |
2142 | } | |
2143 | ||
2144 | static void | |
2145 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2146 | const uint8_t *maskp, struct ds *s) | |
2147 | { | |
6a885fd0 | 2148 | if (mf->string == MFS_HEXADECIMAL) { |
1734bf29 | 2149 | ds_put_hex(s, valuep, mf->n_bytes); |
6a885fd0 | 2150 | } else { |
1734bf29 JG |
2151 | unsigned long long int integer = 0; |
2152 | int i; | |
6a885fd0 | 2153 | |
1734bf29 | 2154 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 | 2155 | for (i = 0; i < mf->n_bytes; i++) { |
1734bf29 | 2156 | integer = (integer << 8) | valuep[i]; |
6a885fd0 | 2157 | } |
1734bf29 JG |
2158 | ds_put_format(s, "%lld", integer); |
2159 | } | |
6a885fd0 | 2160 | |
1734bf29 | 2161 | if (maskp) { |
6a885fd0 BP |
2162 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm |
2163 | * not sure that that a bit-mask written in decimal is ever easier to | |
2164 | * understand than the same bit-mask written in hexadecimal. */ | |
1734bf29 JG |
2165 | ds_put_char(s, '/'); |
2166 | ds_put_hex(s, maskp, mf->n_bytes); | |
6a885fd0 BP |
2167 | } |
2168 | } | |
2169 | ||
7257b535 | 2170 | static void |
8f75dea3 | 2171 | mf_format_frag_string(uint8_t value, uint8_t mask, struct ds *s) |
7257b535 BP |
2172 | { |
2173 | const struct frag_handling *h; | |
7257b535 | 2174 | |
eadef313 | 2175 | mask &= FLOW_NW_FRAG_MASK; |
8f75dea3 | 2176 | value &= mask; |
7257b535 BP |
2177 | |
2178 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2179 | if (value == h->value && mask == h->mask) { | |
2180 | ds_put_cstr(s, h->name); | |
2181 | return; | |
2182 | } | |
2183 | } | |
2184 | ds_put_cstr(s, "<error>"); | |
2185 | } | |
2186 | ||
4fe3445a | 2187 | static void |
b666962b | 2188 | mf_format_tnl_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s) |
4fe3445a | 2189 | { |
b666962b JG |
2190 | format_flags_masked(s, NULL, flow_tun_flag_to_string, ntohs(value), |
2191 | ntohs(mask) & FLOW_TNL_PUB_F_MASK, FLOW_TNL_PUB_F_MASK); | |
4fe3445a PS |
2192 | } |
2193 | ||
61bf6666 JR |
2194 | static void |
2195 | mf_format_tcp_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s) | |
2196 | { | |
2197 | format_flags_masked(s, NULL, packet_tcp_flag_to_string, ntohs(value), | |
8e4c1621 | 2198 | TCP_FLAGS(mask), TCP_FLAGS(OVS_BE16_MAX)); |
61bf6666 JR |
2199 | } |
2200 | ||
6a885fd0 BP |
2201 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2202 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2203 | void | |
2204 | mf_format(const struct mf_field *mf, | |
2205 | const union mf_value *value, const union mf_value *mask, | |
2206 | struct ds *s) | |
2207 | { | |
2208 | if (mask) { | |
53cb9c3e | 2209 | if (is_all_zeros(mask, mf->n_bytes)) { |
6a885fd0 BP |
2210 | ds_put_cstr(s, "ANY"); |
2211 | return; | |
53cb9c3e | 2212 | } else if (is_all_ones(mask, mf->n_bytes)) { |
6a885fd0 BP |
2213 | mask = NULL; |
2214 | } | |
2215 | } | |
2216 | ||
2217 | switch (mf->string) { | |
72333065 JR |
2218 | case MFS_OFP_PORT_OXM: |
2219 | if (!mask) { | |
4e022ec0 | 2220 | ofp_port_t port; |
bc146369 | 2221 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
2222 | ofputil_format_port(port, s); |
2223 | break; | |
2224 | } | |
2225 | /* fall through */ | |
6a885fd0 BP |
2226 | case MFS_OFP_PORT: |
2227 | if (!mask) { | |
4e022ec0 | 2228 | ofputil_format_port(u16_to_ofp(ntohs(value->be16)), s); |
6a885fd0 BP |
2229 | break; |
2230 | } | |
2231 | /* fall through */ | |
2232 | case MFS_DECIMAL: | |
2233 | case MFS_HEXADECIMAL: | |
2234 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2235 | break; | |
2236 | ||
2237 | case MFS_ETHERNET: | |
3b4d8ad3 | 2238 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2239 | break; |
2240 | ||
2241 | case MFS_IPV4: | |
b8266395 | 2242 | ip_format_masked(value->be32, mask ? mask->be32 : OVS_BE32_MAX, s); |
6a885fd0 BP |
2243 | break; |
2244 | ||
2245 | case MFS_IPV6: | |
2246 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2247 | break; | |
2248 | ||
7257b535 | 2249 | case MFS_FRAG: |
8f75dea3 | 2250 | mf_format_frag_string(value->u8, mask ? mask->u8 : UINT8_MAX, s); |
7257b535 BP |
2251 | break; |
2252 | ||
4fe3445a | 2253 | case MFS_TNL_FLAGS: |
b666962b JG |
2254 | mf_format_tnl_flags_string(value->be16, |
2255 | mask ? mask->be16 : OVS_BE16_MAX, s); | |
4fe3445a PS |
2256 | break; |
2257 | ||
61bf6666 JR |
2258 | case MFS_TCP_FLAGS: |
2259 | mf_format_tcp_flags_string(value->be16, | |
2260 | mask ? mask->be16 : OVS_BE16_MAX, s); | |
2261 | break; | |
2262 | ||
6a885fd0 | 2263 | default: |
428b2edd | 2264 | OVS_NOT_REACHED(); |
6a885fd0 BP |
2265 | } |
2266 | } | |
816fd533 | 2267 | \f |
9bab681f IY |
2268 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2269 | * least-significant bits in 'x'. | |
2270 | */ | |
2271 | void | |
2272 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2273 | const union mf_subvalue *x, struct flow *flow) | |
2274 | { | |
2275 | const struct mf_field *field = sf->field; | |
2276 | union mf_value value; | |
2277 | ||
2278 | mf_get_value(field, flow, &value); | |
158edc8d | 2279 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2280 | sf->ofs, sf->n_bits); |
2281 | mf_set_flow_value(field, &value, flow); | |
2282 | } | |
2283 | ||
81a76618 | 2284 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2285 | * least-significant bits in 'x'. |
615660a9 | 2286 | */ |
1b35df45 BP |
2287 | void |
2288 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2289 | struct match *match) |
1b35df45 BP |
2290 | { |
2291 | const struct mf_field *field = sf->field; | |
2292 | union mf_value value, mask; | |
2293 | ||
81a76618 | 2294 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2295 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2296 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2297 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2298 | } |
2299 | ||
35c1f798 BP |
2300 | /* 'v' and 'm' correspond to values of 'field'. This function copies them into |
2301 | * 'match' in the correspond positions. */ | |
2302 | void | |
2303 | mf_mask_subfield(const struct mf_field *field, | |
2304 | const union mf_subvalue *v, | |
2305 | const union mf_subvalue *m, | |
2306 | struct match *match) | |
2307 | { | |
2308 | union mf_value value, mask; | |
2309 | ||
2310 | mf_get(field, match, &value, &mask); | |
2311 | bitwise_copy(v, sizeof *v, 0, &value, field->n_bytes, 0, field->n_bits); | |
2312 | bitwise_copy(m, sizeof *m, 0, &mask, field->n_bytes, 0, field->n_bits); | |
2313 | mf_set(field, &value, &mask, match); | |
2314 | } | |
2315 | ||
1b35df45 BP |
2316 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2317 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2318 | void | |
2319 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2320 | union mf_subvalue *x) | |
2321 | { | |
2322 | union mf_value value; | |
2323 | ||
2324 | mf_get_value(sf->field, flow, &value); | |
2325 | ||
2326 | memset(x, 0, sizeof *x); | |
2327 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2328 | x, sizeof *x, 0, | |
2329 | sf->n_bits); | |
2330 | } | |
2331 | ||
816fd533 BP |
2332 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2333 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2334 | * less. */ | |
2335 | uint64_t | |
2336 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2337 | { | |
2338 | union mf_value value; | |
2339 | ||
2340 | mf_get_value(sf->field, flow, &value); | |
2341 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2342 | } | |
2343 | ||
9bab681f IY |
2344 | void |
2345 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2346 | { | |
e7ae59f9 | 2347 | ds_put_hex(s, subvalue->u8, sizeof subvalue->u8); |
9bab681f | 2348 | } |
bc65c25a SH |
2349 | |
2350 | void | |
2351 | field_array_set(enum mf_field_id id, const union mf_value *value, | |
2352 | struct field_array *fa) | |
2353 | { | |
2354 | ovs_assert(id < MFF_N_IDS); | |
2355 | bitmap_set1(fa->used.bm, id); | |
2356 | fa->value[id] = *value; | |
2357 | } |