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6a885fd0 | 1 | /* |
9d84066c | 2 | * Copyright (c) 2011, 2012, 2013, 2014 Nicira, Inc. |
6a885fd0 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "meta-flow.h" | |
20 | ||
6a885fd0 BP |
21 | #include <errno.h> |
22 | #include <limits.h> | |
23 | #include <netinet/icmp6.h> | |
24 | #include <netinet/ip6.h> | |
25 | ||
26 | #include "classifier.h" | |
27 | #include "dynamic-string.h" | |
178742f9 | 28 | #include "nx-match.h" |
816fd533 | 29 | #include "ofp-errors.h" |
6a885fd0 | 30 | #include "ofp-util.h" |
4663f9e0 | 31 | #include "ovs-thread.h" |
6a885fd0 BP |
32 | #include "packets.h" |
33 | #include "random.h" | |
34 | #include "shash.h" | |
35 | #include "socket-util.h" | |
36 | #include "unaligned.h" | |
816fd533 BP |
37 | #include "vlog.h" |
38 | ||
39 | VLOG_DEFINE_THIS_MODULE(meta_flow); | |
6a885fd0 | 40 | |
13751fd8 JR |
41 | #define FLOW_U32OFS(FIELD) \ |
42 | offsetof(struct flow, FIELD) % 4 ? -1 : offsetof(struct flow, FIELD) / 4 | |
43 | ||
6a885fd0 BP |
44 | #define MF_FIELD_SIZES(MEMBER) \ |
45 | sizeof ((union mf_value *)0)->MEMBER, \ | |
46 | 8 * sizeof ((union mf_value *)0)->MEMBER | |
47 | ||
7f98c44d JR |
48 | extern const struct mf_field mf_fields[MFF_N_IDS]; /* Silence a warning. */ |
49 | ||
50 | const struct mf_field mf_fields[MFF_N_IDS] = { | |
a4ce8b25 | 51 | #include "meta-flow.inc" |
6a885fd0 BP |
52 | }; |
53 | ||
4663f9e0 BP |
54 | /* Maps from an mf_field's 'name' or 'extra_name' to the mf_field. */ |
55 | static struct shash mf_by_name; | |
28da1f8f | 56 | |
816fd533 BP |
57 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
58 | * controller and so there's not much point in showing a lot of them. */ | |
59 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
60 | ||
4663f9e0 | 61 | static void nxm_init(void); |
b5e5143b | 62 | |
6a885fd0 BP |
63 | /* Returns the field with the given 'name', or a null pointer if no field has |
64 | * that name. */ | |
65 | const struct mf_field * | |
66 | mf_from_name(const char *name) | |
67 | { | |
4663f9e0 | 68 | nxm_init(); |
6a885fd0 BP |
69 | return shash_find_data(&mf_by_name, name); |
70 | } | |
71 | ||
28da1f8f | 72 | static void |
4663f9e0 | 73 | nxm_do_init(void) |
28da1f8f | 74 | { |
216a32dd | 75 | int i; |
28da1f8f | 76 | |
4663f9e0 | 77 | shash_init(&mf_by_name); |
216a32dd JR |
78 | for (i = 0; i < MFF_N_IDS; i++) { |
79 | const struct mf_field *mf = &mf_fields[i]; | |
80 | ||
81 | ovs_assert(mf->id == i); /* Fields must be in the enum order. */ | |
82 | ||
4663f9e0 BP |
83 | shash_add_once(&mf_by_name, mf->name, mf); |
84 | if (mf->extra_name) { | |
85 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
86 | } | |
28da1f8f | 87 | } |
28da1f8f BP |
88 | } |
89 | ||
4663f9e0 BP |
90 | static void |
91 | nxm_init(void) | |
92 | { | |
93 | static pthread_once_t once = PTHREAD_ONCE_INIT; | |
94 | pthread_once(&once, nxm_do_init); | |
95 | } | |
96 | ||
6a885fd0 BP |
97 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
98 | * specifies at least one bit in the field. | |
99 | * | |
100 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
101 | * meets 'mf''s prerequisites. */ | |
102 | bool | |
103 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
104 | { | |
105 | switch (mf->id) { | |
a79f29f2 AZ |
106 | case MFF_DP_HASH: |
107 | return !wc->masks.dp_hash; | |
108 | case MFF_RECIRC_ID: | |
109 | return !wc->masks.recirc_id; | |
4fe3445a | 110 | case MFF_TUN_SRC: |
0ad90c84 | 111 | return !wc->masks.tunnel.ip_src; |
4fe3445a | 112 | case MFF_TUN_DST: |
0ad90c84 JR |
113 | return !wc->masks.tunnel.ip_dst; |
114 | case MFF_TUN_ID: | |
4fe3445a PS |
115 | case MFF_TUN_TOS: |
116 | case MFF_TUN_TTL: | |
117 | case MFF_TUN_FLAGS: | |
296e07ac | 118 | return !wc->masks.tunnel.tun_id; |
969fc56c | 119 | case MFF_METADATA: |
26720e24 | 120 | return !wc->masks.metadata; |
0bdc4bec | 121 | case MFF_IN_PORT: |
72333065 | 122 | case MFF_IN_PORT_OXM: |
4e022ec0 | 123 | return !wc->masks.in_port.ofp_port; |
1b567fb9 AA |
124 | case MFF_SKB_PRIORITY: |
125 | return !wc->masks.skb_priority; | |
1362e248 JG |
126 | case MFF_PKT_MARK: |
127 | return !wc->masks.pkt_mark; | |
0d7e2fe4 | 128 | CASE_MFF_REGS: |
26720e24 | 129 | return !wc->masks.regs[mf->id - MFF_REG0]; |
79fe0f46 BP |
130 | CASE_MFF_XREGS: |
131 | return !flow_get_xreg(&wc->masks, mf->id - MFF_XREG0); | |
c61f3870 BP |
132 | case MFF_ACTSET_OUTPUT: |
133 | return !wc->masks.actset_output; | |
6a885fd0 | 134 | |
73c0ce34 | 135 | case MFF_ETH_SRC: |
26720e24 | 136 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 137 | case MFF_ETH_DST: |
26720e24 | 138 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 139 | case MFF_ETH_TYPE: |
26720e24 | 140 | return !wc->masks.dl_type; |
6a885fd0 | 141 | |
e878338b SH |
142 | case MFF_ARP_SHA: |
143 | case MFF_ND_SLL: | |
26720e24 | 144 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
145 | |
146 | case MFF_ARP_THA: | |
147 | case MFF_ND_TLL: | |
26720e24 | 148 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 149 | |
6a885fd0 | 150 | case MFF_VLAN_TCI: |
26720e24 | 151 | return !wc->masks.vlan_tci; |
441c57a9 | 152 | case MFF_DL_VLAN: |
26720e24 | 153 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 154 | case MFF_VLAN_VID: |
26720e24 | 155 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 156 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 157 | case MFF_VLAN_PCP: |
26720e24 | 158 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 | 159 | |
b02475c5 | 160 | case MFF_MPLS_LABEL: |
8bfd0fda | 161 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)); |
b02475c5 | 162 | case MFF_MPLS_TC: |
60df616f | 163 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK)); |
b02475c5 | 164 | case MFF_MPLS_BOS: |
60df616f | 165 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)); |
b02475c5 | 166 | |
6a885fd0 | 167 | case MFF_IPV4_SRC: |
26720e24 | 168 | return !wc->masks.nw_src; |
6a885fd0 | 169 | case MFF_IPV4_DST: |
26720e24 | 170 | return !wc->masks.nw_dst; |
6a885fd0 BP |
171 | |
172 | case MFF_IPV6_SRC: | |
26720e24 | 173 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 174 | case MFF_IPV6_DST: |
26720e24 | 175 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 176 | |
32455024 | 177 | case MFF_IPV6_LABEL: |
26720e24 | 178 | return !wc->masks.ipv6_label; |
32455024 | 179 | |
851d3105 | 180 | case MFF_IP_PROTO: |
26720e24 | 181 | return !wc->masks.nw_proto; |
5d9499c4 | 182 | case MFF_IP_DSCP: |
1638b906 | 183 | case MFF_IP_DSCP_SHIFTED: |
26720e24 | 184 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 185 | case MFF_IP_ECN: |
26720e24 | 186 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 187 | case MFF_IP_TTL: |
26720e24 | 188 | return !wc->masks.nw_ttl; |
5d9499c4 | 189 | |
47284b1f | 190 | case MFF_ND_TARGET: |
26720e24 | 191 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 192 | |
7257b535 | 193 | case MFF_IP_FRAG: |
26720e24 | 194 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 195 | |
851d3105 | 196 | case MFF_ARP_OP: |
26720e24 | 197 | return !wc->masks.nw_proto; |
6a885fd0 | 198 | case MFF_ARP_SPA: |
26720e24 | 199 | return !wc->masks.nw_src; |
6a885fd0 | 200 | case MFF_ARP_TPA: |
26720e24 | 201 | return !wc->masks.nw_dst; |
6a885fd0 | 202 | |
73f33563 BP |
203 | case MFF_TCP_SRC: |
204 | case MFF_UDP_SRC: | |
0d56eaf2 | 205 | case MFF_SCTP_SRC: |
73f33563 BP |
206 | case MFF_ICMPV4_TYPE: |
207 | case MFF_ICMPV6_TYPE: | |
26720e24 | 208 | return !wc->masks.tp_src; |
73f33563 BP |
209 | case MFF_TCP_DST: |
210 | case MFF_UDP_DST: | |
0d56eaf2 | 211 | case MFF_SCTP_DST: |
73f33563 BP |
212 | case MFF_ICMPV4_CODE: |
213 | case MFF_ICMPV6_CODE: | |
26720e24 | 214 | return !wc->masks.tp_dst; |
dc235f7f JR |
215 | case MFF_TCP_FLAGS: |
216 | return !wc->masks.tcp_flags; | |
73f33563 | 217 | |
6a885fd0 BP |
218 | case MFF_N_IDS: |
219 | default: | |
428b2edd | 220 | OVS_NOT_REACHED(); |
6a885fd0 BP |
221 | } |
222 | } | |
223 | ||
224 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
225 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
226 | * purposes, or to 0 if it is wildcarded. | |
227 | * | |
228 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
229 | * meets 'mf''s prerequisites. */ | |
230 | void | |
231 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
232 | union mf_value *mask) | |
233 | { | |
fb15feb0 | 234 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
235 | } |
236 | ||
237 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
238 | * if the mask is valid, false otherwise. */ | |
239 | bool | |
240 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
241 | { | |
242 | switch (mf->maskable) { | |
243 | case MFM_NONE: | |
53cb9c3e JR |
244 | return (is_all_zeros(mask, mf->n_bytes) || |
245 | is_all_ones(mask, mf->n_bytes)); | |
6a885fd0 BP |
246 | |
247 | case MFM_FULLY: | |
248 | return true; | |
6a885fd0 BP |
249 | } |
250 | ||
428b2edd | 251 | OVS_NOT_REACHED(); |
6a885fd0 BP |
252 | } |
253 | ||
6a885fd0 BP |
254 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ |
255 | bool | |
256 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
257 | { | |
258 | switch (mf->prereqs) { | |
259 | case MFP_NONE: | |
260 | return true; | |
261 | ||
262 | case MFP_ARP: | |
8087f5ff MM |
263 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
264 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
265 | case MFP_IPV4: |
266 | return flow->dl_type == htons(ETH_TYPE_IP); | |
267 | case MFP_IPV6: | |
268 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 269 | case MFP_VLAN_VID: |
5921e99a | 270 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
b02475c5 SH |
271 | case MFP_MPLS: |
272 | return eth_type_mpls(flow->dl_type); | |
6a885fd0 BP |
273 | case MFP_IP_ANY: |
274 | return is_ip_any(flow); | |
275 | ||
276 | case MFP_TCP: | |
b8778a0d JR |
277 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP |
278 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
6a885fd0 | 279 | case MFP_UDP: |
b8778a0d JR |
280 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP |
281 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
0d56eaf2 | 282 | case MFP_SCTP: |
b8778a0d JR |
283 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_SCTP |
284 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
268a95e0 BP |
285 | case MFP_ICMPV4: |
286 | return is_icmpv4(flow); | |
6a885fd0 BP |
287 | case MFP_ICMPV6: |
288 | return is_icmpv6(flow); | |
6a885fd0 BP |
289 | |
290 | case MFP_ND: | |
291 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
292 | && flow->tp_dst == htons(0) |
293 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
294 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
295 | case MFP_ND_SOLICIT: |
296 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
297 | && flow->tp_dst == htons(0) |
298 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
299 | case MFP_ND_ADVERT: |
300 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
301 | && flow->tp_dst == htons(0) |
302 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
303 | } |
304 | ||
428b2edd | 305 | OVS_NOT_REACHED(); |
6a885fd0 BP |
306 | } |
307 | ||
b283836c JR |
308 | /* Set field and it's prerequisities in the mask. |
309 | * This is only ever called for writeable 'mf's, but we do not make the | |
310 | * distinction here. */ | |
311 | void | |
312 | mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow *mask) | |
313 | { | |
314 | static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER; | |
315 | ||
316 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
317 | ||
318 | switch (mf->prereqs) { | |
319 | case MFP_ND: | |
320 | case MFP_ND_SOLICIT: | |
321 | case MFP_ND_ADVERT: | |
322 | mask->tp_src = OVS_BE16_MAX; | |
323 | mask->tp_dst = OVS_BE16_MAX; | |
324 | /* Fall through. */ | |
325 | case MFP_TCP: | |
326 | case MFP_UDP: | |
327 | case MFP_SCTP: | |
328 | case MFP_ICMPV4: | |
329 | case MFP_ICMPV6: | |
b8778a0d | 330 | /* nw_frag always unwildcarded. */ |
b283836c JR |
331 | mask->nw_proto = 0xff; |
332 | /* Fall through. */ | |
333 | case MFP_ARP: | |
334 | case MFP_IPV4: | |
335 | case MFP_IPV6: | |
336 | case MFP_MPLS: | |
337 | case MFP_IP_ANY: | |
338 | mask->dl_type = OVS_BE16_MAX; | |
339 | break; | |
340 | case MFP_VLAN_VID: | |
341 | mask->vlan_tci |= htons(VLAN_CFI); | |
342 | break; | |
343 | case MFP_NONE: | |
344 | break; | |
345 | } | |
346 | } | |
347 | ||
348 | ||
6a885fd0 BP |
349 | /* Returns true if 'value' may be a valid value *as part of a masked match*, |
350 | * false otherwise. | |
351 | * | |
352 | * A value is not rejected just because it is not valid for the field in | |
353 | * question, but only if it doesn't make sense to test the bits in question at | |
354 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
355 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
356 | * it is still legitimate to test just for those bits (see the documentation | |
357 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 358 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
359 | bool |
360 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
361 | { | |
362 | switch (mf->id) { | |
a79f29f2 AZ |
363 | case MFF_DP_HASH: |
364 | case MFF_RECIRC_ID: | |
6a885fd0 | 365 | case MFF_TUN_ID: |
4fe3445a PS |
366 | case MFF_TUN_SRC: |
367 | case MFF_TUN_DST: | |
368 | case MFF_TUN_TOS: | |
369 | case MFF_TUN_TTL: | |
370 | case MFF_TUN_FLAGS: | |
969fc56c | 371 | case MFF_METADATA: |
6a885fd0 | 372 | case MFF_IN_PORT: |
1b567fb9 | 373 | case MFF_SKB_PRIORITY: |
1362e248 | 374 | case MFF_PKT_MARK: |
0d7e2fe4 | 375 | CASE_MFF_REGS: |
79fe0f46 | 376 | CASE_MFF_XREGS: |
6a885fd0 BP |
377 | case MFF_ETH_SRC: |
378 | case MFF_ETH_DST: | |
379 | case MFF_ETH_TYPE: | |
380 | case MFF_VLAN_TCI: | |
381 | case MFF_IPV4_SRC: | |
382 | case MFF_IPV4_DST: | |
383 | case MFF_IPV6_SRC: | |
384 | case MFF_IPV6_DST: | |
385 | case MFF_IP_PROTO: | |
a61680c6 | 386 | case MFF_IP_TTL: |
6a885fd0 BP |
387 | case MFF_ARP_SPA: |
388 | case MFF_ARP_TPA: | |
389 | case MFF_ARP_SHA: | |
390 | case MFF_ARP_THA: | |
391 | case MFF_TCP_SRC: | |
392 | case MFF_TCP_DST: | |
393 | case MFF_UDP_SRC: | |
394 | case MFF_UDP_DST: | |
0d56eaf2 JS |
395 | case MFF_SCTP_SRC: |
396 | case MFF_SCTP_DST: | |
268a95e0 BP |
397 | case MFF_ICMPV4_TYPE: |
398 | case MFF_ICMPV4_CODE: | |
399 | case MFF_ICMPV6_TYPE: | |
400 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
401 | case MFF_ND_TARGET: |
402 | case MFF_ND_SLL: | |
403 | case MFF_ND_TLL: | |
404 | return true; | |
405 | ||
c61f3870 BP |
406 | case MFF_IN_PORT_OXM: |
407 | case MFF_ACTSET_OUTPUT: { | |
4e022ec0 | 408 | ofp_port_t port; |
72333065 JR |
409 | return !ofputil_port_from_ofp11(value->be32, &port); |
410 | } | |
411 | ||
530180fd | 412 | case MFF_IP_DSCP: |
7257b535 | 413 | return !(value->u8 & ~IP_DSCP_MASK); |
1638b906 BP |
414 | case MFF_IP_DSCP_SHIFTED: |
415 | return !(value->u8 & (~IP_DSCP_MASK >> 2)); | |
530180fd JP |
416 | case MFF_IP_ECN: |
417 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 418 | case MFF_IP_FRAG: |
eadef313 | 419 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
dc235f7f JR |
420 | case MFF_TCP_FLAGS: |
421 | return !(value->be16 & ~htons(0x0fff)); | |
6a885fd0 BP |
422 | |
423 | case MFF_ARP_OP: | |
424 | return !(value->be16 & htons(0xff00)); | |
425 | ||
441c57a9 | 426 | case MFF_DL_VLAN: |
6a885fd0 | 427 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
428 | case MFF_VLAN_VID: |
429 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 430 | |
441c57a9 | 431 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 432 | case MFF_VLAN_PCP: |
24016f5a | 433 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 434 | |
fa8223b7 JP |
435 | case MFF_IPV6_LABEL: |
436 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
437 | ||
b02475c5 SH |
438 | case MFF_MPLS_LABEL: |
439 | return !(value->be32 & ~htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT)); | |
440 | ||
441 | case MFF_MPLS_TC: | |
442 | return !(value->u8 & ~(MPLS_TC_MASK >> MPLS_TC_SHIFT)); | |
443 | ||
444 | case MFF_MPLS_BOS: | |
445 | return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT)); | |
446 | ||
6a885fd0 BP |
447 | case MFF_N_IDS: |
448 | default: | |
428b2edd | 449 | OVS_NOT_REACHED(); |
6a885fd0 BP |
450 | } |
451 | } | |
452 | ||
453 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
454 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
455 | void | |
456 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
457 | union mf_value *value) | |
458 | { | |
459 | switch (mf->id) { | |
a79f29f2 AZ |
460 | case MFF_DP_HASH: |
461 | value->be32 = htonl(flow->dp_hash); | |
462 | break; | |
463 | case MFF_RECIRC_ID: | |
464 | value->be32 = htonl(flow->recirc_id); | |
465 | break; | |
6a885fd0 | 466 | case MFF_TUN_ID: |
296e07ac | 467 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 468 | break; |
4fe3445a PS |
469 | case MFF_TUN_SRC: |
470 | value->be32 = flow->tunnel.ip_src; | |
471 | break; | |
472 | case MFF_TUN_DST: | |
473 | value->be32 = flow->tunnel.ip_dst; | |
474 | break; | |
475 | case MFF_TUN_FLAGS: | |
476 | value->be16 = htons(flow->tunnel.flags); | |
477 | break; | |
478 | case MFF_TUN_TTL: | |
479 | value->u8 = flow->tunnel.ip_ttl; | |
480 | break; | |
481 | case MFF_TUN_TOS: | |
482 | value->u8 = flow->tunnel.ip_tos; | |
483 | break; | |
484 | ||
969fc56c JS |
485 | case MFF_METADATA: |
486 | value->be64 = flow->metadata; | |
487 | break; | |
6a885fd0 BP |
488 | |
489 | case MFF_IN_PORT: | |
4e022ec0 | 490 | value->be16 = htons(ofp_to_u16(flow->in_port.ofp_port)); |
6a885fd0 | 491 | break; |
72333065 | 492 | case MFF_IN_PORT_OXM: |
4e022ec0 | 493 | value->be32 = ofputil_port_to_ofp11(flow->in_port.ofp_port); |
72333065 | 494 | break; |
c61f3870 BP |
495 | case MFF_ACTSET_OUTPUT: |
496 | value->be32 = ofputil_port_to_ofp11(flow->actset_output); | |
497 | break; | |
72333065 | 498 | |
1b567fb9 | 499 | case MFF_SKB_PRIORITY: |
a81f0a44 | 500 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
501 | break; |
502 | ||
1362e248 JG |
503 | case MFF_PKT_MARK: |
504 | value->be32 = htonl(flow->pkt_mark); | |
1b567fb9 AA |
505 | break; |
506 | ||
0d7e2fe4 | 507 | CASE_MFF_REGS: |
2f98b0b7 | 508 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
509 | break; |
510 | ||
79fe0f46 BP |
511 | CASE_MFF_XREGS: |
512 | value->be64 = htonll(flow_get_xreg(flow, mf->id - MFF_XREG0)); | |
513 | break; | |
514 | ||
6a885fd0 BP |
515 | case MFF_ETH_SRC: |
516 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
517 | break; | |
518 | ||
519 | case MFF_ETH_DST: | |
520 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
521 | break; | |
522 | ||
523 | case MFF_ETH_TYPE: | |
524 | value->be16 = flow->dl_type; | |
525 | break; | |
526 | ||
527 | case MFF_VLAN_TCI: | |
528 | value->be16 = flow->vlan_tci; | |
529 | break; | |
530 | ||
441c57a9 | 531 | case MFF_DL_VLAN: |
6a885fd0 BP |
532 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
533 | break; | |
cc34bc8c BP |
534 | case MFF_VLAN_VID: |
535 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
536 | break; | |
6a885fd0 | 537 | |
441c57a9 | 538 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 539 | case MFF_VLAN_PCP: |
6a885fd0 BP |
540 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
541 | break; | |
542 | ||
b02475c5 | 543 | case MFF_MPLS_LABEL: |
8bfd0fda | 544 | value->be32 = htonl(mpls_lse_to_label(flow->mpls_lse[0])); |
b02475c5 SH |
545 | break; |
546 | ||
547 | case MFF_MPLS_TC: | |
8bfd0fda | 548 | value->u8 = mpls_lse_to_tc(flow->mpls_lse[0]); |
b02475c5 SH |
549 | break; |
550 | ||
551 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
552 | value->u8 = mpls_lse_to_bos(flow->mpls_lse[0]); |
553 | break; | |
b02475c5 | 554 | |
6a885fd0 BP |
555 | case MFF_IPV4_SRC: |
556 | value->be32 = flow->nw_src; | |
557 | break; | |
558 | ||
559 | case MFF_IPV4_DST: | |
560 | value->be32 = flow->nw_dst; | |
561 | break; | |
562 | ||
563 | case MFF_IPV6_SRC: | |
564 | value->ipv6 = flow->ipv6_src; | |
565 | break; | |
566 | ||
567 | case MFF_IPV6_DST: | |
568 | value->ipv6 = flow->ipv6_dst; | |
569 | break; | |
570 | ||
fa8223b7 JP |
571 | case MFF_IPV6_LABEL: |
572 | value->be32 = flow->ipv6_label; | |
573 | break; | |
574 | ||
6a885fd0 BP |
575 | case MFF_IP_PROTO: |
576 | value->u8 = flow->nw_proto; | |
577 | break; | |
578 | ||
530180fd | 579 | case MFF_IP_DSCP: |
eadef313 | 580 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
581 | break; |
582 | ||
1638b906 BP |
583 | case MFF_IP_DSCP_SHIFTED: |
584 | value->u8 = flow->nw_tos >> 2; | |
585 | break; | |
586 | ||
530180fd | 587 | case MFF_IP_ECN: |
eadef313 | 588 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
589 | break; |
590 | ||
a61680c6 JP |
591 | case MFF_IP_TTL: |
592 | value->u8 = flow->nw_ttl; | |
593 | break; | |
594 | ||
7257b535 | 595 | case MFF_IP_FRAG: |
eadef313 | 596 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
597 | break; |
598 | ||
599 | case MFF_ARP_OP: | |
600 | value->be16 = htons(flow->nw_proto); | |
601 | break; | |
602 | ||
603 | case MFF_ARP_SPA: | |
604 | value->be32 = flow->nw_src; | |
605 | break; | |
606 | ||
607 | case MFF_ARP_TPA: | |
608 | value->be32 = flow->nw_dst; | |
609 | break; | |
610 | ||
611 | case MFF_ARP_SHA: | |
612 | case MFF_ND_SLL: | |
613 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
614 | break; | |
615 | ||
616 | case MFF_ARP_THA: | |
617 | case MFF_ND_TLL: | |
618 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
619 | break; | |
620 | ||
621 | case MFF_TCP_SRC: | |
6a885fd0 | 622 | case MFF_UDP_SRC: |
0d56eaf2 | 623 | case MFF_SCTP_SRC: |
6a885fd0 BP |
624 | value->be16 = flow->tp_src; |
625 | break; | |
626 | ||
71baec06 | 627 | case MFF_TCP_DST: |
6a885fd0 | 628 | case MFF_UDP_DST: |
0d56eaf2 | 629 | case MFF_SCTP_DST: |
6a885fd0 BP |
630 | value->be16 = flow->tp_dst; |
631 | break; | |
632 | ||
dc235f7f JR |
633 | case MFF_TCP_FLAGS: |
634 | value->be16 = flow->tcp_flags; | |
635 | break; | |
636 | ||
268a95e0 BP |
637 | case MFF_ICMPV4_TYPE: |
638 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
639 | value->u8 = ntohs(flow->tp_src); |
640 | break; | |
641 | ||
268a95e0 BP |
642 | case MFF_ICMPV4_CODE: |
643 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
644 | value->u8 = ntohs(flow->tp_dst); |
645 | break; | |
646 | ||
647 | case MFF_ND_TARGET: | |
648 | value->ipv6 = flow->nd_target; | |
649 | break; | |
650 | ||
651 | case MFF_N_IDS: | |
652 | default: | |
428b2edd | 653 | OVS_NOT_REACHED(); |
6a885fd0 BP |
654 | } |
655 | } | |
656 | ||
81a76618 BP |
657 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
658 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
659 | * prerequisites. */ |
660 | void | |
661 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 662 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
663 | { |
664 | switch (mf->id) { | |
a79f29f2 AZ |
665 | case MFF_DP_HASH: |
666 | match_set_dp_hash(match, ntohl(value->be32)); | |
667 | break; | |
668 | case MFF_RECIRC_ID: | |
669 | match_set_recirc_id(match, ntohl(value->be32)); | |
670 | break; | |
6a885fd0 | 671 | case MFF_TUN_ID: |
81a76618 | 672 | match_set_tun_id(match, value->be64); |
6a885fd0 | 673 | break; |
4fe3445a PS |
674 | case MFF_TUN_SRC: |
675 | match_set_tun_src(match, value->be32); | |
676 | break; | |
677 | case MFF_TUN_DST: | |
678 | match_set_tun_dst(match, value->be32); | |
679 | break; | |
680 | case MFF_TUN_FLAGS: | |
681 | match_set_tun_flags(match, ntohs(value->be16)); | |
682 | break; | |
683 | case MFF_TUN_TOS: | |
684 | match_set_tun_tos(match, value->u8); | |
685 | break; | |
686 | case MFF_TUN_TTL: | |
687 | match_set_tun_ttl(match, value->u8); | |
688 | break; | |
689 | ||
969fc56c | 690 | case MFF_METADATA: |
81a76618 | 691 | match_set_metadata(match, value->be64); |
969fc56c | 692 | break; |
6a885fd0 BP |
693 | |
694 | case MFF_IN_PORT: | |
4e022ec0 | 695 | match_set_in_port(match, u16_to_ofp(ntohs(value->be16))); |
6a885fd0 BP |
696 | break; |
697 | ||
72333065 | 698 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 699 | ofp_port_t port; |
bc146369 | 700 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
701 | match_set_in_port(match, port); |
702 | break; | |
703 | } | |
c61f3870 BP |
704 | case MFF_ACTSET_OUTPUT: { |
705 | ofp_port_t port; | |
706 | ofputil_port_from_ofp11(value->be32, &port); | |
707 | match_set_actset_output(match, port); | |
708 | break; | |
709 | } | |
72333065 | 710 | |
1b567fb9 AA |
711 | case MFF_SKB_PRIORITY: |
712 | match_set_skb_priority(match, ntohl(value->be32)); | |
713 | break; | |
714 | ||
1362e248 JG |
715 | case MFF_PKT_MARK: |
716 | match_set_pkt_mark(match, ntohl(value->be32)); | |
1b567fb9 AA |
717 | break; |
718 | ||
0d7e2fe4 | 719 | CASE_MFF_REGS: |
81a76618 | 720 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 721 | break; |
6a885fd0 | 722 | |
79fe0f46 BP |
723 | CASE_MFF_XREGS: |
724 | match_set_xreg(match, mf->id - MFF_XREG0, ntohll(value->be64)); | |
725 | break; | |
726 | ||
6a885fd0 | 727 | case MFF_ETH_SRC: |
81a76618 | 728 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
729 | break; |
730 | ||
731 | case MFF_ETH_DST: | |
81a76618 | 732 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
733 | break; |
734 | ||
735 | case MFF_ETH_TYPE: | |
81a76618 | 736 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
737 | break; |
738 | ||
739 | case MFF_VLAN_TCI: | |
81a76618 | 740 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
741 | break; |
742 | ||
441c57a9 | 743 | case MFF_DL_VLAN: |
81a76618 | 744 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 745 | break; |
cc34bc8c | 746 | case MFF_VLAN_VID: |
81a76618 | 747 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 748 | break; |
6a885fd0 | 749 | |
441c57a9 | 750 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 751 | case MFF_VLAN_PCP: |
81a76618 | 752 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
753 | break; |
754 | ||
b02475c5 | 755 | case MFF_MPLS_LABEL: |
8bfd0fda | 756 | match_set_mpls_label(match, 0, value->be32); |
b02475c5 SH |
757 | break; |
758 | ||
759 | case MFF_MPLS_TC: | |
8bfd0fda | 760 | match_set_mpls_tc(match, 0, value->u8); |
b02475c5 SH |
761 | break; |
762 | ||
763 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
764 | match_set_mpls_bos(match, 0, value->u8); |
765 | break; | |
b02475c5 | 766 | |
6a885fd0 | 767 | case MFF_IPV4_SRC: |
81a76618 | 768 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
769 | break; |
770 | ||
771 | case MFF_IPV4_DST: | |
81a76618 | 772 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
773 | break; |
774 | ||
775 | case MFF_IPV6_SRC: | |
81a76618 | 776 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
777 | break; |
778 | ||
779 | case MFF_IPV6_DST: | |
81a76618 | 780 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
781 | break; |
782 | ||
fa8223b7 | 783 | case MFF_IPV6_LABEL: |
81a76618 | 784 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
785 | break; |
786 | ||
6a885fd0 | 787 | case MFF_IP_PROTO: |
81a76618 | 788 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
789 | break; |
790 | ||
530180fd | 791 | case MFF_IP_DSCP: |
81a76618 | 792 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
793 | break; |
794 | ||
1638b906 BP |
795 | case MFF_IP_DSCP_SHIFTED: |
796 | match_set_nw_dscp(match, value->u8 << 2); | |
797 | break; | |
798 | ||
530180fd | 799 | case MFF_IP_ECN: |
81a76618 | 800 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
801 | break; |
802 | ||
a61680c6 | 803 | case MFF_IP_TTL: |
81a76618 | 804 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
805 | break; |
806 | ||
7257b535 | 807 | case MFF_IP_FRAG: |
81a76618 | 808 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
809 | break; |
810 | ||
6a885fd0 | 811 | case MFF_ARP_OP: |
81a76618 | 812 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
813 | break; |
814 | ||
815 | case MFF_ARP_SPA: | |
81a76618 | 816 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
817 | break; |
818 | ||
819 | case MFF_ARP_TPA: | |
81a76618 | 820 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
821 | break; |
822 | ||
823 | case MFF_ARP_SHA: | |
824 | case MFF_ND_SLL: | |
81a76618 | 825 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
826 | break; |
827 | ||
828 | case MFF_ARP_THA: | |
829 | case MFF_ND_TLL: | |
81a76618 | 830 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
831 | break; |
832 | ||
833 | case MFF_TCP_SRC: | |
6a885fd0 | 834 | case MFF_UDP_SRC: |
0d56eaf2 | 835 | case MFF_SCTP_SRC: |
81a76618 | 836 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
837 | break; |
838 | ||
71baec06 | 839 | case MFF_TCP_DST: |
6a885fd0 | 840 | case MFF_UDP_DST: |
0d56eaf2 | 841 | case MFF_SCTP_DST: |
81a76618 | 842 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
843 | break; |
844 | ||
dc235f7f JR |
845 | case MFF_TCP_FLAGS: |
846 | match_set_tcp_flags(match, value->be16); | |
847 | break; | |
848 | ||
268a95e0 BP |
849 | case MFF_ICMPV4_TYPE: |
850 | case MFF_ICMPV6_TYPE: | |
81a76618 | 851 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
852 | break; |
853 | ||
268a95e0 BP |
854 | case MFF_ICMPV4_CODE: |
855 | case MFF_ICMPV6_CODE: | |
81a76618 | 856 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
857 | break; |
858 | ||
859 | case MFF_ND_TARGET: | |
81a76618 | 860 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
861 | break; |
862 | ||
863 | case MFF_N_IDS: | |
864 | default: | |
428b2edd | 865 | OVS_NOT_REACHED(); |
6a885fd0 BP |
866 | } |
867 | } | |
868 | ||
5a0a5702 GS |
869 | /* Unwildcard 'mask' member field described by 'mf'. The caller is |
870 | * responsible for ensuring that 'mask' meets 'mf''s prerequisites. */ | |
871 | void | |
872 | mf_mask_field(const struct mf_field *mf, struct flow *mask) | |
873 | { | |
874 | static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER; | |
875 | ||
876 | /* For MFF_DL_VLAN, we cannot send a all 1's to flow_set_dl_vlan() | |
877 | * as that will be considered as OFP10_VLAN_NONE. So consider it as a | |
878 | * special case. For the rest, calling mf_set_flow_value() is good | |
879 | * enough. */ | |
880 | if (mf->id == MFF_DL_VLAN) { | |
881 | flow_set_dl_vlan(mask, htons(VLAN_VID_MASK)); | |
882 | } else { | |
883 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
884 | } | |
885 | } | |
886 | ||
910fb1d8 JP |
887 | /* Sets 'flow' member field described by 'mf' to 'value'. The caller is |
888 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/ | |
28da1f8f BP |
889 | void |
890 | mf_set_flow_value(const struct mf_field *mf, | |
891 | const union mf_value *value, struct flow *flow) | |
892 | { | |
893 | switch (mf->id) { | |
a79f29f2 AZ |
894 | case MFF_DP_HASH: |
895 | flow->dp_hash = ntohl(value->be32); | |
896 | break; | |
897 | case MFF_RECIRC_ID: | |
898 | flow->recirc_id = ntohl(value->be32); | |
899 | break; | |
28da1f8f | 900 | case MFF_TUN_ID: |
296e07ac | 901 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 902 | break; |
4fe3445a PS |
903 | case MFF_TUN_SRC: |
904 | flow->tunnel.ip_src = value->be32; | |
905 | break; | |
906 | case MFF_TUN_DST: | |
907 | flow->tunnel.ip_dst = value->be32; | |
908 | break; | |
909 | case MFF_TUN_FLAGS: | |
910 | flow->tunnel.flags = ntohs(value->be16); | |
911 | break; | |
912 | case MFF_TUN_TOS: | |
913 | flow->tunnel.ip_tos = value->u8; | |
914 | break; | |
915 | case MFF_TUN_TTL: | |
916 | flow->tunnel.ip_ttl = value->u8; | |
917 | break; | |
918 | ||
969fc56c JS |
919 | case MFF_METADATA: |
920 | flow->metadata = value->be64; | |
921 | break; | |
28da1f8f BP |
922 | |
923 | case MFF_IN_PORT: | |
4e022ec0 | 924 | flow->in_port.ofp_port = u16_to_ofp(ntohs(value->be16)); |
28da1f8f BP |
925 | break; |
926 | ||
c61f3870 BP |
927 | case MFF_IN_PORT_OXM: |
928 | ofputil_port_from_ofp11(value->be32, &flow->in_port.ofp_port); | |
929 | break; | |
930 | case MFF_ACTSET_OUTPUT: | |
931 | ofputil_port_from_ofp11(value->be32, &flow->actset_output); | |
72333065 | 932 | break; |
72333065 | 933 | |
1b567fb9 AA |
934 | case MFF_SKB_PRIORITY: |
935 | flow->skb_priority = ntohl(value->be32); | |
936 | break; | |
937 | ||
1362e248 JG |
938 | case MFF_PKT_MARK: |
939 | flow->pkt_mark = ntohl(value->be32); | |
1b567fb9 AA |
940 | break; |
941 | ||
0d7e2fe4 | 942 | CASE_MFF_REGS: |
28da1f8f BP |
943 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
944 | break; | |
28da1f8f | 945 | |
79fe0f46 BP |
946 | CASE_MFF_XREGS: |
947 | flow_set_xreg(flow, mf->id - MFF_XREG0, ntohll(value->be64)); | |
948 | break; | |
949 | ||
28da1f8f BP |
950 | case MFF_ETH_SRC: |
951 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
952 | break; | |
953 | ||
954 | case MFF_ETH_DST: | |
b5a36e38 | 955 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
956 | break; |
957 | ||
958 | case MFF_ETH_TYPE: | |
959 | flow->dl_type = value->be16; | |
960 | break; | |
961 | ||
962 | case MFF_VLAN_TCI: | |
963 | flow->vlan_tci = value->be16; | |
964 | break; | |
965 | ||
441c57a9 | 966 | case MFF_DL_VLAN: |
fb0451d9 | 967 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 968 | break; |
cc34bc8c BP |
969 | case MFF_VLAN_VID: |
970 | flow_set_vlan_vid(flow, value->be16); | |
971 | break; | |
28da1f8f | 972 | |
441c57a9 | 973 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 974 | case MFF_VLAN_PCP: |
28da1f8f BP |
975 | flow_set_vlan_pcp(flow, value->u8); |
976 | break; | |
977 | ||
b02475c5 | 978 | case MFF_MPLS_LABEL: |
8bfd0fda | 979 | flow_set_mpls_label(flow, 0, value->be32); |
b02475c5 SH |
980 | break; |
981 | ||
982 | case MFF_MPLS_TC: | |
8bfd0fda | 983 | flow_set_mpls_tc(flow, 0, value->u8); |
b02475c5 SH |
984 | break; |
985 | ||
986 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
987 | flow_set_mpls_bos(flow, 0, value->u8); |
988 | break; | |
b02475c5 | 989 | |
28da1f8f BP |
990 | case MFF_IPV4_SRC: |
991 | flow->nw_src = value->be32; | |
992 | break; | |
993 | ||
994 | case MFF_IPV4_DST: | |
995 | flow->nw_dst = value->be32; | |
996 | break; | |
997 | ||
998 | case MFF_IPV6_SRC: | |
999 | flow->ipv6_src = value->ipv6; | |
1000 | break; | |
1001 | ||
1002 | case MFF_IPV6_DST: | |
1003 | flow->ipv6_dst = value->ipv6; | |
1004 | break; | |
1005 | ||
1006 | case MFF_IPV6_LABEL: | |
1007 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1008 | break; | |
1009 | ||
1010 | case MFF_IP_PROTO: | |
1011 | flow->nw_proto = value->u8; | |
1012 | break; | |
1013 | ||
1014 | case MFF_IP_DSCP: | |
1015 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1016 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1017 | break; | |
1018 | ||
1638b906 BP |
1019 | case MFF_IP_DSCP_SHIFTED: |
1020 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1021 | flow->nw_tos |= value->u8 << 2; | |
1022 | break; | |
1023 | ||
28da1f8f BP |
1024 | case MFF_IP_ECN: |
1025 | flow->nw_tos &= ~IP_ECN_MASK; | |
1026 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1027 | break; | |
1028 | ||
1029 | case MFF_IP_TTL: | |
1030 | flow->nw_ttl = value->u8; | |
1031 | break; | |
1032 | ||
1033 | case MFF_IP_FRAG: | |
c8abb8af | 1034 | flow->nw_frag = value->u8 & FLOW_NW_FRAG_MASK; |
28da1f8f BP |
1035 | break; |
1036 | ||
1037 | case MFF_ARP_OP: | |
1038 | flow->nw_proto = ntohs(value->be16); | |
1039 | break; | |
1040 | ||
1041 | case MFF_ARP_SPA: | |
1042 | flow->nw_src = value->be32; | |
1043 | break; | |
1044 | ||
1045 | case MFF_ARP_TPA: | |
1046 | flow->nw_dst = value->be32; | |
1047 | break; | |
1048 | ||
1049 | case MFF_ARP_SHA: | |
1050 | case MFF_ND_SLL: | |
1051 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1052 | break; | |
1053 | ||
1054 | case MFF_ARP_THA: | |
1055 | case MFF_ND_TLL: | |
1056 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1057 | break; | |
1058 | ||
1059 | case MFF_TCP_SRC: | |
1060 | case MFF_UDP_SRC: | |
0d56eaf2 | 1061 | case MFF_SCTP_SRC: |
28da1f8f BP |
1062 | flow->tp_src = value->be16; |
1063 | break; | |
1064 | ||
1065 | case MFF_TCP_DST: | |
1066 | case MFF_UDP_DST: | |
0d56eaf2 | 1067 | case MFF_SCTP_DST: |
28da1f8f BP |
1068 | flow->tp_dst = value->be16; |
1069 | break; | |
1070 | ||
dc235f7f JR |
1071 | case MFF_TCP_FLAGS: |
1072 | flow->tcp_flags = value->be16; | |
1073 | break; | |
1074 | ||
28da1f8f BP |
1075 | case MFF_ICMPV4_TYPE: |
1076 | case MFF_ICMPV6_TYPE: | |
1077 | flow->tp_src = htons(value->u8); | |
1078 | break; | |
1079 | ||
1080 | case MFF_ICMPV4_CODE: | |
1081 | case MFF_ICMPV6_CODE: | |
1082 | flow->tp_dst = htons(value->u8); | |
1083 | break; | |
1084 | ||
1085 | case MFF_ND_TARGET: | |
1086 | flow->nd_target = value->ipv6; | |
1087 | break; | |
1088 | ||
1089 | case MFF_N_IDS: | |
1090 | default: | |
428b2edd | 1091 | OVS_NOT_REACHED(); |
28da1f8f BP |
1092 | } |
1093 | } | |
1094 | ||
7eb4b1f1 BP |
1095 | /* Consider each of 'src', 'mask', and 'dst' as if they were arrays of 8*n |
1096 | * bits. Then, for each 0 <= i < 8 * n such that mask[i] == 1, sets dst[i] = | |
1097 | * src[i]. */ | |
1098 | static void | |
1099 | apply_mask(const uint8_t *src, const uint8_t *mask, uint8_t *dst, size_t n) | |
1100 | { | |
1101 | size_t i; | |
1102 | ||
1103 | for (i = 0; i < n; i++) { | |
1104 | dst[i] = (src[i] & mask[i]) | (dst[i] & ~mask[i]); | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | /* Sets 'flow' member field described by 'field' to 'value', except that bits | |
1109 | * for which 'mask' has a 0-bit keep their existing values. The caller is | |
1110 | * responsible for ensuring that 'flow' meets 'field''s prerequisites.*/ | |
1111 | void | |
1112 | mf_set_flow_value_masked(const struct mf_field *field, | |
1113 | const union mf_value *value, | |
1114 | const union mf_value *mask, | |
1115 | struct flow *flow) | |
1116 | { | |
1117 | union mf_value tmp; | |
1118 | ||
1119 | mf_get_value(field, flow, &tmp); | |
1120 | apply_mask((const uint8_t *) value, (const uint8_t *) mask, | |
1121 | (uint8_t *) &tmp, field->n_bytes); | |
1122 | mf_set_flow_value(field, &tmp, flow); | |
1123 | } | |
1124 | ||
ccbe50f8 BP |
1125 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1126 | * | |
1127 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1128 | * prerequisites. */ | |
1129 | bool | |
1130 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1131 | { | |
1132 | union mf_value value; | |
1133 | ||
1134 | mf_get_value(mf, flow, &value); | |
53cb9c3e | 1135 | return is_all_zeros(&value, mf->n_bytes); |
ccbe50f8 BP |
1136 | } |
1137 | ||
81a76618 | 1138 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1139 | * |
81a76618 | 1140 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1141 | * prerequisites. */ |
1142 | void | |
81a76618 | 1143 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1144 | { |
1145 | switch (mf->id) { | |
a79f29f2 AZ |
1146 | case MFF_DP_HASH: |
1147 | match->flow.dp_hash = 0; | |
1148 | match->wc.masks.dp_hash = 0; | |
1149 | break; | |
1150 | case MFF_RECIRC_ID: | |
1151 | match->flow.recirc_id = 0; | |
1152 | match->wc.masks.recirc_id = 0; | |
1153 | break; | |
6a885fd0 | 1154 | case MFF_TUN_ID: |
81a76618 | 1155 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1156 | break; |
4fe3445a PS |
1157 | case MFF_TUN_SRC: |
1158 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1159 | break; | |
1160 | case MFF_TUN_DST: | |
1161 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1162 | break; | |
1163 | case MFF_TUN_FLAGS: | |
1164 | match_set_tun_flags_masked(match, 0, 0); | |
1165 | break; | |
1166 | case MFF_TUN_TOS: | |
1167 | match_set_tun_tos_masked(match, 0, 0); | |
1168 | break; | |
1169 | case MFF_TUN_TTL: | |
1170 | match_set_tun_ttl_masked(match, 0, 0); | |
1171 | break; | |
1172 | ||
969fc56c | 1173 | case MFF_METADATA: |
81a76618 | 1174 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
801d2b2a | 1175 | break; |
6a885fd0 BP |
1176 | |
1177 | case MFF_IN_PORT: | |
72333065 | 1178 | case MFF_IN_PORT_OXM: |
4e022ec0 AW |
1179 | match->flow.in_port.ofp_port = 0; |
1180 | match->wc.masks.in_port.ofp_port = 0; | |
6a885fd0 | 1181 | break; |
c61f3870 BP |
1182 | case MFF_ACTSET_OUTPUT: |
1183 | match->flow.actset_output = 0; | |
1184 | match->wc.masks.actset_output = 0; | |
1185 | break; | |
6a885fd0 | 1186 | |
1b567fb9 AA |
1187 | case MFF_SKB_PRIORITY: |
1188 | match->flow.skb_priority = 0; | |
1189 | match->wc.masks.skb_priority = 0; | |
1190 | break; | |
1191 | ||
1362e248 JG |
1192 | case MFF_PKT_MARK: |
1193 | match->flow.pkt_mark = 0; | |
1194 | match->wc.masks.pkt_mark = 0; | |
1b567fb9 AA |
1195 | break; |
1196 | ||
0d7e2fe4 | 1197 | CASE_MFF_REGS: |
81a76618 | 1198 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1199 | break; |
6a885fd0 | 1200 | |
79fe0f46 BP |
1201 | CASE_MFF_XREGS: |
1202 | match_set_xreg_masked(match, mf->id - MFF_XREG0, 0, 0); | |
1203 | break; | |
1204 | ||
6a885fd0 | 1205 | case MFF_ETH_SRC: |
81a76618 BP |
1206 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1207 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1208 | break; |
1209 | ||
1210 | case MFF_ETH_DST: | |
81a76618 BP |
1211 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1212 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1213 | break; |
1214 | ||
1215 | case MFF_ETH_TYPE: | |
81a76618 BP |
1216 | match->flow.dl_type = htons(0); |
1217 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1218 | break; |
1219 | ||
1220 | case MFF_VLAN_TCI: | |
81a76618 | 1221 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1222 | break; |
1223 | ||
441c57a9 | 1224 | case MFF_DL_VLAN: |
cc34bc8c | 1225 | case MFF_VLAN_VID: |
81a76618 | 1226 | match_set_any_vid(match); |
6a885fd0 BP |
1227 | break; |
1228 | ||
441c57a9 | 1229 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1230 | case MFF_VLAN_PCP: |
81a76618 | 1231 | match_set_any_pcp(match); |
6a885fd0 BP |
1232 | break; |
1233 | ||
b02475c5 | 1234 | case MFF_MPLS_LABEL: |
8bfd0fda | 1235 | match_set_any_mpls_label(match, 0); |
b02475c5 SH |
1236 | break; |
1237 | ||
1238 | case MFF_MPLS_TC: | |
8bfd0fda | 1239 | match_set_any_mpls_tc(match, 0); |
b02475c5 SH |
1240 | break; |
1241 | ||
1242 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1243 | match_set_any_mpls_bos(match, 0); |
1244 | break; | |
b02475c5 | 1245 | |
6a885fd0 BP |
1246 | case MFF_IPV4_SRC: |
1247 | case MFF_ARP_SPA: | |
81a76618 | 1248 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1249 | break; |
1250 | ||
1251 | case MFF_IPV4_DST: | |
1252 | case MFF_ARP_TPA: | |
81a76618 | 1253 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1254 | break; |
1255 | ||
1256 | case MFF_IPV6_SRC: | |
81a76618 BP |
1257 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1258 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1259 | break; |
1260 | ||
1261 | case MFF_IPV6_DST: | |
81a76618 BP |
1262 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1263 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1264 | break; |
1265 | ||
fa8223b7 | 1266 | case MFF_IPV6_LABEL: |
81a76618 BP |
1267 | match->wc.masks.ipv6_label = htonl(0); |
1268 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1269 | break; |
1270 | ||
6a885fd0 | 1271 | case MFF_IP_PROTO: |
81a76618 BP |
1272 | match->wc.masks.nw_proto = 0; |
1273 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1274 | break; |
1275 | ||
530180fd | 1276 | case MFF_IP_DSCP: |
1638b906 | 1277 | case MFF_IP_DSCP_SHIFTED: |
81a76618 BP |
1278 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1279 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1280 | break; |
1281 | ||
530180fd | 1282 | case MFF_IP_ECN: |
81a76618 BP |
1283 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1284 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1285 | break; |
1286 | ||
a61680c6 | 1287 | case MFF_IP_TTL: |
81a76618 BP |
1288 | match->wc.masks.nw_ttl = 0; |
1289 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1290 | break; |
1291 | ||
7257b535 | 1292 | case MFF_IP_FRAG: |
81a76618 BP |
1293 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1294 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1295 | break; |
1296 | ||
1297 | case MFF_ARP_OP: | |
81a76618 BP |
1298 | match->wc.masks.nw_proto = 0; |
1299 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1300 | break; |
1301 | ||
1302 | case MFF_ARP_SHA: | |
1303 | case MFF_ND_SLL: | |
81a76618 BP |
1304 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1305 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1306 | break; |
1307 | ||
1308 | case MFF_ARP_THA: | |
1309 | case MFF_ND_TLL: | |
81a76618 BP |
1310 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1311 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1312 | break; |
1313 | ||
1314 | case MFF_TCP_SRC: | |
1315 | case MFF_UDP_SRC: | |
0d56eaf2 | 1316 | case MFF_SCTP_SRC: |
268a95e0 BP |
1317 | case MFF_ICMPV4_TYPE: |
1318 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1319 | match->wc.masks.tp_src = htons(0); |
1320 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1321 | break; |
1322 | ||
1323 | case MFF_TCP_DST: | |
1324 | case MFF_UDP_DST: | |
0d56eaf2 | 1325 | case MFF_SCTP_DST: |
268a95e0 BP |
1326 | case MFF_ICMPV4_CODE: |
1327 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1328 | match->wc.masks.tp_dst = htons(0); |
1329 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1330 | break; |
1331 | ||
dc235f7f JR |
1332 | case MFF_TCP_FLAGS: |
1333 | match->wc.masks.tcp_flags = htons(0); | |
1334 | match->flow.tcp_flags = htons(0); | |
1335 | break; | |
1336 | ||
6a885fd0 | 1337 | case MFF_ND_TARGET: |
81a76618 BP |
1338 | memset(&match->wc.masks.nd_target, 0, |
1339 | sizeof match->wc.masks.nd_target); | |
1340 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1341 | break; |
1342 | ||
1343 | case MFF_N_IDS: | |
1344 | default: | |
428b2edd | 1345 | OVS_NOT_REACHED(); |
6a885fd0 BP |
1346 | } |
1347 | } | |
1348 | ||
81a76618 | 1349 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1350 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1351 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1352 | * 0-bit indicating a don't-care. | |
1353 | * | |
1354 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1355 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1356 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1357 | * |
1358 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1359 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
db0b6c29 | 1360 | enum ofputil_protocol |
6a885fd0 BP |
1361 | mf_set(const struct mf_field *mf, |
1362 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1363 | struct match *match) |
6a885fd0 | 1364 | { |
53cb9c3e | 1365 | if (!mask || is_all_ones(mask, mf->n_bytes)) { |
81a76618 | 1366 | mf_set_value(mf, value, match); |
a4ce8b25 | 1367 | return mf->usable_protocols_exact; |
53cb9c3e | 1368 | } else if (is_all_zeros(mask, mf->n_bytes)) { |
81a76618 | 1369 | mf_set_wild(mf, match); |
db0b6c29 | 1370 | return OFPUTIL_P_ANY; |
6a885fd0 BP |
1371 | } |
1372 | ||
1373 | switch (mf->id) { | |
a79f29f2 | 1374 | case MFF_RECIRC_ID: |
6a885fd0 | 1375 | case MFF_IN_PORT: |
72333065 | 1376 | case MFF_IN_PORT_OXM: |
c61f3870 | 1377 | case MFF_ACTSET_OUTPUT: |
1b567fb9 | 1378 | case MFF_SKB_PRIORITY: |
6a885fd0 | 1379 | case MFF_ETH_TYPE: |
441c57a9 BP |
1380 | case MFF_DL_VLAN: |
1381 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1382 | case MFF_VLAN_PCP: |
b02475c5 SH |
1383 | case MFF_MPLS_LABEL: |
1384 | case MFF_MPLS_TC: | |
1385 | case MFF_MPLS_BOS: | |
6a885fd0 | 1386 | case MFF_IP_PROTO: |
a61680c6 | 1387 | case MFF_IP_TTL: |
530180fd | 1388 | case MFF_IP_DSCP: |
1638b906 | 1389 | case MFF_IP_DSCP_SHIFTED: |
530180fd | 1390 | case MFF_IP_ECN: |
6a885fd0 | 1391 | case MFF_ARP_OP: |
268a95e0 BP |
1392 | case MFF_ICMPV4_TYPE: |
1393 | case MFF_ICMPV4_CODE: | |
1394 | case MFF_ICMPV6_TYPE: | |
1395 | case MFF_ICMPV6_CODE: | |
af69bf19 | 1396 | return OFPUTIL_P_NONE; |
6a885fd0 | 1397 | |
a79f29f2 AZ |
1398 | case MFF_DP_HASH: |
1399 | match_set_dp_hash_masked(match, ntohl(value->be32), ntohl(mask->be32)); | |
1400 | break; | |
6a885fd0 | 1401 | case MFF_TUN_ID: |
81a76618 | 1402 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1403 | break; |
4fe3445a PS |
1404 | case MFF_TUN_SRC: |
1405 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1406 | break; | |
1407 | case MFF_TUN_DST: | |
1408 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1409 | break; | |
1410 | case MFF_TUN_FLAGS: | |
1411 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1412 | break; | |
1413 | case MFF_TUN_TTL: | |
1414 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1415 | break; | |
1416 | case MFF_TUN_TOS: | |
1417 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1418 | break; | |
1419 | ||
969fc56c | 1420 | case MFF_METADATA: |
81a76618 | 1421 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1422 | break; |
6a885fd0 | 1423 | |
0d7e2fe4 | 1424 | CASE_MFF_REGS: |
81a76618 BP |
1425 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1426 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 | 1427 | break; |
ac923e91 | 1428 | |
79fe0f46 BP |
1429 | CASE_MFF_XREGS: |
1430 | match_set_xreg_masked(match, mf->id - MFF_XREG0, | |
1431 | ntohll(value->be64), ntohll(mask->be64)); | |
1432 | break; | |
1433 | ||
ac923e91 JG |
1434 | case MFF_PKT_MARK: |
1435 | match_set_pkt_mark_masked(match, ntohl(value->be32), | |
1436 | ntohl(mask->be32)); | |
1437 | break; | |
6a885fd0 BP |
1438 | |
1439 | case MFF_ETH_DST: | |
81a76618 | 1440 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1441 | break; |
1442 | ||
1443 | case MFF_ETH_SRC: | |
81a76618 | 1444 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1445 | break; |
1446 | ||
e878338b SH |
1447 | case MFF_ARP_SHA: |
1448 | case MFF_ND_SLL: | |
81a76618 | 1449 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1450 | break; |
1451 | ||
1452 | case MFF_ARP_THA: | |
1453 | case MFF_ND_TLL: | |
81a76618 | 1454 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1455 | break; |
1456 | ||
6a885fd0 | 1457 | case MFF_VLAN_TCI: |
81a76618 | 1458 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1459 | break; |
1460 | ||
cc34bc8c | 1461 | case MFF_VLAN_VID: |
81a76618 | 1462 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1463 | break; |
1464 | ||
6a885fd0 | 1465 | case MFF_IPV4_SRC: |
81a76618 | 1466 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1467 | break; |
6a885fd0 BP |
1468 | |
1469 | case MFF_IPV4_DST: | |
81a76618 | 1470 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1471 | break; |
6a885fd0 BP |
1472 | |
1473 | case MFF_IPV6_SRC: | |
81a76618 | 1474 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1475 | break; |
1476 | ||
1477 | case MFF_IPV6_DST: | |
81a76618 | 1478 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1479 | break; |
1480 | ||
32455024 SH |
1481 | case MFF_IPV6_LABEL: |
1482 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1483 | mf_set_value(mf, value, match); |
32455024 | 1484 | } else { |
81a76618 | 1485 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1486 | } |
1487 | break; | |
1488 | ||
47284b1f | 1489 | case MFF_ND_TARGET: |
81a76618 | 1490 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1491 | break; |
1492 | ||
7257b535 | 1493 | case MFF_IP_FRAG: |
81a76618 | 1494 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1495 | break; |
1496 | ||
6a885fd0 | 1497 | case MFF_ARP_SPA: |
81a76618 | 1498 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1499 | break; |
6a885fd0 BP |
1500 | |
1501 | case MFF_ARP_TPA: | |
81a76618 | 1502 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1503 | break; |
6a885fd0 | 1504 | |
73f33563 BP |
1505 | case MFF_TCP_SRC: |
1506 | case MFF_UDP_SRC: | |
0d56eaf2 | 1507 | case MFF_SCTP_SRC: |
81a76618 | 1508 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1509 | break; |
1510 | ||
1511 | case MFF_TCP_DST: | |
1512 | case MFF_UDP_DST: | |
0d56eaf2 | 1513 | case MFF_SCTP_DST: |
81a76618 | 1514 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1515 | break; |
1516 | ||
dc235f7f JR |
1517 | case MFF_TCP_FLAGS: |
1518 | match_set_tcp_flags_masked(match, value->be16, mask->be16); | |
1519 | break; | |
1520 | ||
6a885fd0 BP |
1521 | case MFF_N_IDS: |
1522 | default: | |
428b2edd | 1523 | OVS_NOT_REACHED(); |
6a885fd0 | 1524 | } |
db0b6c29 | 1525 | |
a4ce8b25 BP |
1526 | return ((mf->usable_protocols_bitwise == mf->usable_protocols_cidr |
1527 | || ip_is_cidr(mask->be32)) | |
1528 | ? mf->usable_protocols_cidr | |
1529 | : mf->usable_protocols_bitwise); | |
6a885fd0 BP |
1530 | } |
1531 | ||
816fd533 BP |
1532 | static enum ofperr |
1533 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1534 | const char *type) | |
6a885fd0 | 1535 | { |
816fd533 BP |
1536 | if (!sf->field) { |
1537 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
9e404d1e | 1538 | return OFPERR_OFPBAC_BAD_SET_TYPE; |
816fd533 BP |
1539 | } else if (!sf->n_bits) { |
1540 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
9e404d1e | 1541 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1542 | } else if (sf->ofs >= sf->field->n_bits) { |
1543 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1544 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1545 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1546 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { |
1547 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1548 | "of %s field %s", sf->ofs, sf->n_bits, | |
1549 | sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1550 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1551 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { |
1552 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1553 | type, sf->field->name); | |
9e404d1e | 1554 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
6a885fd0 | 1555 | } else { |
816fd533 BP |
1556 | return 0; |
1557 | } | |
816fd533 | 1558 | } |
6a885fd0 | 1559 | |
816fd533 BP |
1560 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1561 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1562 | * ofp_mkerr()). */ | |
1563 | enum ofperr | |
1564 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1565 | { | |
1566 | return mf_check__(sf, flow, "source"); | |
1567 | } | |
6a885fd0 | 1568 | |
816fd533 BP |
1569 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1570 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1571 | * ofp_mkerr()). */ | |
1572 | enum ofperr | |
1573 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1574 | { | |
1575 | int error = mf_check__(sf, flow, "destination"); | |
1576 | if (!error && !sf->field->writable) { | |
1577 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1578 | sf->field->name); | |
9e404d1e | 1579 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
6a885fd0 | 1580 | } |
816fd533 | 1581 | return error; |
6a885fd0 BP |
1582 | } |
1583 | ||
81a76618 | 1584 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1585 | * 'value' and 'mask', respectively. */ |
1586 | void | |
81a76618 | 1587 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1588 | union mf_value *value, union mf_value *mask) |
1589 | { | |
81a76618 BP |
1590 | mf_get_value(mf, &match->flow, value); |
1591 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1592 | } |
1593 | ||
6a885fd0 BP |
1594 | static char * |
1595 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1596 | uint8_t *valuep, uint8_t *maskp) | |
1597 | { | |
1598 | unsigned long long int integer, mask; | |
1599 | char *tail; | |
1600 | int i; | |
1601 | ||
1602 | errno = 0; | |
1603 | integer = strtoull(s, &tail, 0); | |
1604 | if (errno || (*tail != '\0' && *tail != '/')) { | |
1605 | goto syntax_error; | |
1606 | } | |
1607 | ||
1608 | if (*tail == '/') { | |
1609 | mask = strtoull(tail + 1, &tail, 0); | |
1610 | if (errno || *tail != '\0') { | |
1611 | goto syntax_error; | |
1612 | } | |
1613 | } else { | |
1614 | mask = ULLONG_MAX; | |
1615 | } | |
1616 | ||
1617 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
1618 | valuep[i] = integer; | |
1619 | maskp[i] = mask; | |
1620 | integer >>= 8; | |
1621 | mask >>= 8; | |
1622 | } | |
1623 | if (integer) { | |
1624 | return xasprintf("%s: value too large for %u-byte field %s", | |
1625 | s, mf->n_bytes, mf->name); | |
1626 | } | |
1627 | return NULL; | |
1628 | ||
1629 | syntax_error: | |
1630 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
1631 | } | |
1632 | ||
1633 | static char * | |
1634 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1635 | uint8_t mac[ETH_ADDR_LEN], | |
1636 | uint8_t mask[ETH_ADDR_LEN]) | |
1637 | { | |
279fb135 | 1638 | int n; |
6a885fd0 | 1639 | |
279fb135 | 1640 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 | 1641 | |
279fb135 | 1642 | n = -1; |
c2c28dfd | 1643 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n) |
279fb135 | 1644 | && n == strlen(s)) { |
6a885fd0 BP |
1645 | memset(mask, 0xff, ETH_ADDR_LEN); |
1646 | return NULL; | |
279fb135 | 1647 | } |
6a885fd0 | 1648 | |
279fb135 | 1649 | n = -1; |
c2c28dfd BP |
1650 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n", |
1651 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n) | |
279fb135 BP |
1652 | && n == strlen(s)) { |
1653 | return NULL; | |
6a885fd0 | 1654 | } |
279fb135 BP |
1655 | |
1656 | return xasprintf("%s: invalid Ethernet address", s); | |
6a885fd0 BP |
1657 | } |
1658 | ||
1659 | static char * | |
1660 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1661 | ovs_be32 *ip, ovs_be32 *mask) | |
1662 | { | |
1663 | int prefix; | |
1664 | ||
cb22974d | 1665 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 | 1666 | |
c2c28dfd BP |
1667 | if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT, |
1668 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) { | |
6a885fd0 | 1669 | /* OK. */ |
c2c28dfd | 1670 | } else if (ovs_scan(s, IP_SCAN_FMT"/%d", IP_SCAN_ARGS(ip), &prefix)) { |
6a885fd0 BP |
1671 | if (prefix <= 0 || prefix > 32) { |
1672 | return xasprintf("%s: network prefix bits not between 1 and " | |
1673 | "32", s); | |
1674 | } else if (prefix == 32) { | |
b8266395 | 1675 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
1676 | } else { |
1677 | *mask = htonl(((1u << prefix) - 1) << (32 - prefix)); | |
1678 | } | |
c2c28dfd | 1679 | } else if (ovs_scan(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) { |
b8266395 | 1680 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
1681 | } else { |
1682 | return xasprintf("%s: invalid IP address", s); | |
1683 | } | |
1684 | return NULL; | |
1685 | } | |
1686 | ||
1687 | static char * | |
1688 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1689 | struct in6_addr *value, struct in6_addr *mask) | |
1690 | { | |
1691 | char *str = xstrdup(s); | |
1692 | char *save_ptr = NULL; | |
1693 | const char *name, *netmask; | |
1694 | int retval; | |
1695 | ||
cb22974d | 1696 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
1697 | |
1698 | name = strtok_r(str, "/", &save_ptr); | |
1699 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1700 | if (retval) { | |
1701 | char *err; | |
1702 | ||
1703 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1704 | free(str); | |
1705 | ||
1706 | return err; | |
1707 | } | |
1708 | ||
1709 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1710 | if (netmask) { | |
ff0b06ee BP |
1711 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
1712 | int prefix = atoi(netmask); | |
1713 | if (prefix <= 0 || prefix > 128) { | |
1714 | free(str); | |
1715 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
1716 | } else { | |
1717 | *mask = ipv6_create_mask(prefix); | |
1718 | } | |
6a885fd0 BP |
1719 | } |
1720 | } else { | |
1721 | *mask = in6addr_exact; | |
1722 | } | |
1723 | free(str); | |
1724 | ||
1725 | return NULL; | |
1726 | } | |
1727 | ||
1728 | static char * | |
1729 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
1730 | ovs_be16 *valuep, ovs_be16 *maskp) | |
1731 | { | |
4e022ec0 | 1732 | ofp_port_t port; |
6a885fd0 | 1733 | |
cb22974d | 1734 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
33ab38d9 JR |
1735 | |
1736 | if (ofputil_port_from_string(s, &port)) { | |
4e022ec0 | 1737 | *valuep = htons(ofp_to_u16(port)); |
b8266395 | 1738 | *maskp = OVS_BE16_MAX; |
6a885fd0 | 1739 | return NULL; |
6a885fd0 | 1740 | } |
33ab38d9 | 1741 | return xasprintf("%s: port value out of range for %s", s, mf->name); |
6a885fd0 BP |
1742 | } |
1743 | ||
72333065 JR |
1744 | static char * |
1745 | mf_from_ofp_port_string32(const struct mf_field *mf, const char *s, | |
1746 | ovs_be32 *valuep, ovs_be32 *maskp) | |
1747 | { | |
4e022ec0 | 1748 | ofp_port_t port; |
72333065 JR |
1749 | |
1750 | ovs_assert(mf->n_bytes == sizeof(ovs_be32)); | |
1751 | if (ofputil_port_from_string(s, &port)) { | |
1752 | *valuep = ofputil_port_to_ofp11(port); | |
b8266395 | 1753 | *maskp = OVS_BE32_MAX; |
72333065 JR |
1754 | return NULL; |
1755 | } | |
1756 | return xasprintf("%s: port value out of range for %s", s, mf->name); | |
1757 | } | |
1758 | ||
7257b535 BP |
1759 | struct frag_handling { |
1760 | const char *name; | |
1761 | uint8_t mask; | |
1762 | uint8_t value; | |
1763 | }; | |
1764 | ||
1765 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
1766 | #define A FLOW_NW_FRAG_ANY |
1767 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
1768 | /* name mask value */ |
1769 | ||
1770 | { "no", A|L, 0 }, | |
1771 | { "first", A|L, A }, | |
1772 | { "later", A|L, A|L }, | |
1773 | ||
1774 | { "no", A, 0 }, | |
1775 | { "yes", A, A }, | |
1776 | ||
1777 | { "not_later", L, 0 }, | |
1778 | { "later", L, L }, | |
1779 | #undef A | |
1780 | #undef L | |
1781 | }; | |
1782 | ||
1783 | static char * | |
1784 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
1785 | { | |
1786 | const struct frag_handling *h; | |
1787 | ||
1788 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
1789 | if (!strcasecmp(s, h->name)) { | |
1790 | /* We force the upper bits of the mask on to make mf_parse_value() | |
1791 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 1792 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
1793 | *valuep = h->value; |
1794 | return NULL; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
1799 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
1800 | } | |
1801 | ||
4fe3445a PS |
1802 | static int |
1803 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
1804 | ovs_be16 *res) | |
1805 | { | |
1806 | uint32_t result = 0; | |
1807 | char *save_ptr = NULL; | |
1808 | char *name; | |
1809 | int rc = 0; | |
1810 | char *s = xstrdup(s_); | |
1811 | ||
1812 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
1813 | name = strtok_r(NULL, " |", &save_ptr)) { | |
1814 | int name_len; | |
1815 | unsigned long long int flags; | |
1816 | uint32_t bit; | |
4fe3445a | 1817 | |
c2c28dfd | 1818 | if (ovs_scan(name, "%lli", &flags)) { |
4fe3445a PS |
1819 | result |= flags; |
1820 | continue; | |
1821 | } | |
1822 | name_len = strlen(name); | |
1823 | for (bit = 1; bit; bit <<= 1) { | |
1824 | const char *fname = bit_to_string(bit); | |
1825 | size_t len; | |
1826 | ||
1827 | if (!fname) { | |
1828 | continue; | |
1829 | } | |
1830 | ||
1831 | len = strlen(fname); | |
1832 | if (len != name_len) { | |
1833 | continue; | |
1834 | } | |
1835 | if (!strncmp(name, fname, len)) { | |
1836 | result |= bit; | |
1837 | break; | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | if (!bit) { | |
1842 | rc = -ENOENT; | |
1843 | goto out; | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | *res = htons(result); | |
1848 | out: | |
1849 | free(s); | |
1850 | return rc; | |
1851 | } | |
1852 | ||
1853 | static char * | |
b0aa8146 | 1854 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
1855 | { |
1856 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b8266395 | 1857 | *maskp = OVS_BE16_MAX; |
4fe3445a PS |
1858 | return NULL; |
1859 | } | |
1860 | ||
1861 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
c49a5e33 | 1862 | "\"csum\", \"key\")", s); |
4fe3445a PS |
1863 | } |
1864 | ||
61bf6666 JR |
1865 | static char * |
1866 | mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp) | |
1867 | { | |
1868 | uint16_t flags = 0; | |
1869 | uint16_t mask = 0; | |
1870 | uint16_t bit; | |
1871 | int n; | |
1872 | ||
1873 | if (ovs_scan(s, "%"SCNi16"/%"SCNi16"%n", &flags, &mask, &n) && !s[n]) { | |
1874 | *flagsp = htons(flags); | |
1875 | *maskp = htons(mask); | |
1876 | return NULL; | |
1877 | } | |
1878 | if (ovs_scan(s, "%"SCNi16"%n", &flags, &n) && !s[n]) { | |
1879 | *flagsp = htons(flags); | |
1880 | *maskp = OVS_BE16_MAX; | |
1881 | return NULL; | |
1882 | } | |
1883 | ||
1884 | while (*s != '\0') { | |
1885 | bool set; | |
1886 | int name_len; | |
1887 | ||
1888 | switch (*s) { | |
1889 | case '+': | |
1890 | set = true; | |
1891 | break; | |
1892 | case '-': | |
1893 | set = false; | |
1894 | break; | |
1895 | default: | |
1896 | return xasprintf("%s: TCP flag must be preceded by '+' (for SET) " | |
1897 | "or '-' (NOT SET)", s); | |
1898 | } | |
1899 | s++; | |
1900 | ||
1901 | name_len = strcspn(s,"+-"); | |
1902 | ||
1903 | for (bit = 1; bit; bit <<= 1) { | |
1904 | const char *fname = packet_tcp_flag_to_string(bit); | |
1905 | size_t len; | |
1906 | ||
1907 | if (!fname) { | |
1908 | continue; | |
1909 | } | |
1910 | ||
1911 | len = strlen(fname); | |
1912 | if (len != name_len) { | |
1913 | continue; | |
1914 | } | |
1915 | if (!strncmp(s, fname, len)) { | |
1916 | if (mask & bit) { | |
1917 | return xasprintf("%s: Each TCP flag can be specified only " | |
1918 | "once", s); | |
1919 | } | |
1920 | if (set) { | |
1921 | flags |= bit; | |
1922 | } | |
1923 | mask |= bit; | |
1924 | break; | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | if (!bit) { | |
1929 | return xasprintf("%s: unknown TCP flag(s)", s); | |
1930 | } | |
1931 | s += name_len; | |
1932 | } | |
1933 | ||
1934 | *flagsp = htons(flags); | |
1935 | *maskp = htons(mask); | |
1936 | return NULL; | |
1937 | } | |
1938 | ||
1939 | ||
6a885fd0 BP |
1940 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
1941 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
1942 | char * | |
1943 | mf_parse(const struct mf_field *mf, const char *s, | |
1944 | union mf_value *value, union mf_value *mask) | |
1945 | { | |
3634dff8 BP |
1946 | char *error; |
1947 | ||
bedde04c | 1948 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
1949 | memset(value, 0, mf->n_bytes); |
1950 | memset(mask, 0, mf->n_bytes); | |
1951 | return NULL; | |
1952 | } | |
1953 | ||
1954 | switch (mf->string) { | |
1955 | case MFS_DECIMAL: | |
1956 | case MFS_HEXADECIMAL: | |
3634dff8 BP |
1957 | error = mf_from_integer_string(mf, s, |
1958 | (uint8_t *) value, (uint8_t *) mask); | |
1959 | break; | |
6a885fd0 BP |
1960 | |
1961 | case MFS_ETHERNET: | |
3634dff8 BP |
1962 | error = mf_from_ethernet_string(mf, s, value->mac, mask->mac); |
1963 | break; | |
6a885fd0 BP |
1964 | |
1965 | case MFS_IPV4: | |
3634dff8 BP |
1966 | error = mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); |
1967 | break; | |
6a885fd0 BP |
1968 | |
1969 | case MFS_IPV6: | |
3634dff8 BP |
1970 | error = mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); |
1971 | break; | |
6a885fd0 BP |
1972 | |
1973 | case MFS_OFP_PORT: | |
3634dff8 BP |
1974 | error = mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); |
1975 | break; | |
7257b535 | 1976 | |
72333065 | 1977 | case MFS_OFP_PORT_OXM: |
3634dff8 BP |
1978 | error = mf_from_ofp_port_string32(mf, s, &value->be32, &mask->be32); |
1979 | break; | |
72333065 | 1980 | |
7257b535 | 1981 | case MFS_FRAG: |
3634dff8 BP |
1982 | error = mf_from_frag_string(s, &value->u8, &mask->u8); |
1983 | break; | |
4fe3445a PS |
1984 | |
1985 | case MFS_TNL_FLAGS: | |
cb22974d | 1986 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
3634dff8 BP |
1987 | error = mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
1988 | break; | |
1989 | ||
61bf6666 JR |
1990 | case MFS_TCP_FLAGS: |
1991 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); | |
1992 | error = mf_from_tcp_flags_string(s, &value->be16, &mask->be16); | |
1993 | break; | |
1994 | ||
3634dff8 | 1995 | default: |
428b2edd | 1996 | OVS_NOT_REACHED(); |
6a885fd0 | 1997 | } |
3634dff8 BP |
1998 | |
1999 | if (!error && !mf_is_mask_valid(mf, mask)) { | |
2000 | error = xasprintf("%s: invalid mask for field %s", s, mf->name); | |
2001 | } | |
2002 | return error; | |
6a885fd0 BP |
2003 | } |
2004 | ||
2005 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2006 | * successful, otherwise a malloc()'d string describing the error. */ | |
2007 | char * | |
2008 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2009 | { | |
2010 | union mf_value mask; | |
2011 | char *error; | |
2012 | ||
2013 | error = mf_parse(mf, s, value, &mask); | |
2014 | if (error) { | |
2015 | return error; | |
2016 | } | |
2017 | ||
2018 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2019 | return xasprintf("%s: wildcards not allowed here", s); | |
2020 | } | |
2021 | return NULL; | |
2022 | } | |
2023 | ||
2024 | static void | |
2025 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2026 | const uint8_t *maskp, struct ds *s) | |
2027 | { | |
2028 | unsigned long long int integer; | |
2029 | int i; | |
2030 | ||
cb22974d | 2031 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 BP |
2032 | |
2033 | integer = 0; | |
2034 | for (i = 0; i < mf->n_bytes; i++) { | |
2035 | integer = (integer << 8) | valuep[i]; | |
2036 | } | |
2037 | if (mf->string == MFS_HEXADECIMAL) { | |
2038 | ds_put_format(s, "%#llx", integer); | |
2039 | } else { | |
2040 | ds_put_format(s, "%lld", integer); | |
2041 | } | |
2042 | ||
2043 | if (maskp) { | |
2044 | unsigned long long int mask; | |
2045 | ||
2046 | mask = 0; | |
2047 | for (i = 0; i < mf->n_bytes; i++) { | |
2048 | mask = (mask << 8) | maskp[i]; | |
2049 | } | |
2050 | ||
2051 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2052 | * not sure that that a bit-mask written in decimal is ever easier to | |
2053 | * understand than the same bit-mask written in hexadecimal. */ | |
2054 | ds_put_format(s, "/%#llx", mask); | |
2055 | } | |
2056 | } | |
2057 | ||
7257b535 | 2058 | static void |
8f75dea3 | 2059 | mf_format_frag_string(uint8_t value, uint8_t mask, struct ds *s) |
7257b535 BP |
2060 | { |
2061 | const struct frag_handling *h; | |
7257b535 | 2062 | |
eadef313 | 2063 | mask &= FLOW_NW_FRAG_MASK; |
8f75dea3 | 2064 | value &= mask; |
7257b535 BP |
2065 | |
2066 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2067 | if (value == h->value && mask == h->mask) { | |
2068 | ds_put_cstr(s, h->name); | |
2069 | return; | |
2070 | } | |
2071 | } | |
2072 | ds_put_cstr(s, "<error>"); | |
2073 | } | |
2074 | ||
4fe3445a PS |
2075 | static void |
2076 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2077 | { | |
2078 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2079 | } | |
2080 | ||
61bf6666 JR |
2081 | static void |
2082 | mf_format_tcp_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s) | |
2083 | { | |
2084 | format_flags_masked(s, NULL, packet_tcp_flag_to_string, ntohs(value), | |
2085 | TCP_FLAGS(mask)); | |
2086 | } | |
2087 | ||
6a885fd0 BP |
2088 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2089 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2090 | void | |
2091 | mf_format(const struct mf_field *mf, | |
2092 | const union mf_value *value, const union mf_value *mask, | |
2093 | struct ds *s) | |
2094 | { | |
2095 | if (mask) { | |
53cb9c3e | 2096 | if (is_all_zeros(mask, mf->n_bytes)) { |
6a885fd0 BP |
2097 | ds_put_cstr(s, "ANY"); |
2098 | return; | |
53cb9c3e | 2099 | } else if (is_all_ones(mask, mf->n_bytes)) { |
6a885fd0 BP |
2100 | mask = NULL; |
2101 | } | |
2102 | } | |
2103 | ||
2104 | switch (mf->string) { | |
72333065 JR |
2105 | case MFS_OFP_PORT_OXM: |
2106 | if (!mask) { | |
4e022ec0 | 2107 | ofp_port_t port; |
bc146369 | 2108 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
2109 | ofputil_format_port(port, s); |
2110 | break; | |
2111 | } | |
2112 | /* fall through */ | |
6a885fd0 BP |
2113 | case MFS_OFP_PORT: |
2114 | if (!mask) { | |
4e022ec0 | 2115 | ofputil_format_port(u16_to_ofp(ntohs(value->be16)), s); |
6a885fd0 BP |
2116 | break; |
2117 | } | |
2118 | /* fall through */ | |
2119 | case MFS_DECIMAL: | |
2120 | case MFS_HEXADECIMAL: | |
2121 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2122 | break; | |
2123 | ||
2124 | case MFS_ETHERNET: | |
3b4d8ad3 | 2125 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2126 | break; |
2127 | ||
2128 | case MFS_IPV4: | |
b8266395 | 2129 | ip_format_masked(value->be32, mask ? mask->be32 : OVS_BE32_MAX, s); |
6a885fd0 BP |
2130 | break; |
2131 | ||
2132 | case MFS_IPV6: | |
2133 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2134 | break; | |
2135 | ||
7257b535 | 2136 | case MFS_FRAG: |
8f75dea3 | 2137 | mf_format_frag_string(value->u8, mask ? mask->u8 : UINT8_MAX, s); |
7257b535 BP |
2138 | break; |
2139 | ||
4fe3445a PS |
2140 | case MFS_TNL_FLAGS: |
2141 | mf_format_tnl_flags_string(&value->be16, s); | |
2142 | break; | |
2143 | ||
61bf6666 JR |
2144 | case MFS_TCP_FLAGS: |
2145 | mf_format_tcp_flags_string(value->be16, | |
2146 | mask ? mask->be16 : OVS_BE16_MAX, s); | |
2147 | break; | |
2148 | ||
6a885fd0 | 2149 | default: |
428b2edd | 2150 | OVS_NOT_REACHED(); |
6a885fd0 BP |
2151 | } |
2152 | } | |
816fd533 | 2153 | \f |
9bab681f IY |
2154 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2155 | * least-significant bits in 'x'. | |
2156 | */ | |
2157 | void | |
2158 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2159 | const union mf_subvalue *x, struct flow *flow) | |
2160 | { | |
2161 | const struct mf_field *field = sf->field; | |
2162 | union mf_value value; | |
2163 | ||
2164 | mf_get_value(field, flow, &value); | |
158edc8d | 2165 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2166 | sf->ofs, sf->n_bits); |
2167 | mf_set_flow_value(field, &value, flow); | |
2168 | } | |
2169 | ||
81a76618 | 2170 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2171 | * least-significant bits in 'x'. |
615660a9 | 2172 | */ |
1b35df45 BP |
2173 | void |
2174 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2175 | struct match *match) |
1b35df45 BP |
2176 | { |
2177 | const struct mf_field *field = sf->field; | |
2178 | union mf_value value, mask; | |
2179 | ||
81a76618 | 2180 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2181 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2182 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2183 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2184 | } |
2185 | ||
1b35df45 BP |
2186 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2187 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2188 | void | |
2189 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2190 | union mf_subvalue *x) | |
2191 | { | |
2192 | union mf_value value; | |
2193 | ||
2194 | mf_get_value(sf->field, flow, &value); | |
2195 | ||
2196 | memset(x, 0, sizeof *x); | |
2197 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2198 | x, sizeof *x, 0, | |
2199 | sf->n_bits); | |
2200 | } | |
2201 | ||
816fd533 BP |
2202 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2203 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2204 | * less. */ | |
2205 | uint64_t | |
2206 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2207 | { | |
2208 | union mf_value value; | |
2209 | ||
2210 | mf_get_value(sf->field, flow, &value); | |
2211 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2212 | } | |
2213 | ||
9bab681f IY |
2214 | void |
2215 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2216 | { | |
2217 | int i; | |
2218 | ||
2219 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2220 | if (subvalue->u8[i]) { | |
2221 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2222 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2223 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2224 | } | |
2225 | return; | |
2226 | } | |
2227 | } | |
2228 | ds_put_char(s, '0'); | |
2229 | } |