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6a885fd0 | 1 | /* |
9d84066c | 2 | * Copyright (c) 2011, 2012, 2013, 2014 Nicira, Inc. |
6a885fd0 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | #include "meta-flow.h" | |
20 | ||
6a885fd0 BP |
21 | #include <errno.h> |
22 | #include <limits.h> | |
23 | #include <netinet/icmp6.h> | |
24 | #include <netinet/ip6.h> | |
25 | ||
26 | #include "classifier.h" | |
27 | #include "dynamic-string.h" | |
178742f9 | 28 | #include "nx-match.h" |
816fd533 | 29 | #include "ofp-errors.h" |
6a885fd0 | 30 | #include "ofp-util.h" |
4663f9e0 | 31 | #include "ovs-thread.h" |
6a885fd0 BP |
32 | #include "packets.h" |
33 | #include "random.h" | |
34 | #include "shash.h" | |
35 | #include "socket-util.h" | |
36 | #include "unaligned.h" | |
86f35fb5 | 37 | #include "util.h" |
e6211adc | 38 | #include "openvswitch/vlog.h" |
816fd533 BP |
39 | |
40 | VLOG_DEFINE_THIS_MODULE(meta_flow); | |
6a885fd0 | 41 | |
13751fd8 JR |
42 | #define FLOW_U32OFS(FIELD) \ |
43 | offsetof(struct flow, FIELD) % 4 ? -1 : offsetof(struct flow, FIELD) / 4 | |
44 | ||
6a885fd0 BP |
45 | #define MF_FIELD_SIZES(MEMBER) \ |
46 | sizeof ((union mf_value *)0)->MEMBER, \ | |
47 | 8 * sizeof ((union mf_value *)0)->MEMBER | |
48 | ||
7f98c44d JR |
49 | extern const struct mf_field mf_fields[MFF_N_IDS]; /* Silence a warning. */ |
50 | ||
51 | const struct mf_field mf_fields[MFF_N_IDS] = { | |
a4ce8b25 | 52 | #include "meta-flow.inc" |
6a885fd0 BP |
53 | }; |
54 | ||
4663f9e0 BP |
55 | /* Maps from an mf_field's 'name' or 'extra_name' to the mf_field. */ |
56 | static struct shash mf_by_name; | |
28da1f8f | 57 | |
816fd533 BP |
58 | /* Rate limit for parse errors. These always indicate a bug in an OpenFlow |
59 | * controller and so there's not much point in showing a lot of them. */ | |
60 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
61 | ||
4663f9e0 | 62 | static void nxm_init(void); |
b5e5143b | 63 | |
6a885fd0 BP |
64 | /* Returns the field with the given 'name', or a null pointer if no field has |
65 | * that name. */ | |
66 | const struct mf_field * | |
67 | mf_from_name(const char *name) | |
68 | { | |
4663f9e0 | 69 | nxm_init(); |
6a885fd0 BP |
70 | return shash_find_data(&mf_by_name, name); |
71 | } | |
72 | ||
28da1f8f | 73 | static void |
4663f9e0 | 74 | nxm_do_init(void) |
28da1f8f | 75 | { |
216a32dd | 76 | int i; |
28da1f8f | 77 | |
4663f9e0 | 78 | shash_init(&mf_by_name); |
216a32dd JR |
79 | for (i = 0; i < MFF_N_IDS; i++) { |
80 | const struct mf_field *mf = &mf_fields[i]; | |
81 | ||
82 | ovs_assert(mf->id == i); /* Fields must be in the enum order. */ | |
83 | ||
4663f9e0 BP |
84 | shash_add_once(&mf_by_name, mf->name, mf); |
85 | if (mf->extra_name) { | |
86 | shash_add_once(&mf_by_name, mf->extra_name, mf); | |
87 | } | |
28da1f8f | 88 | } |
28da1f8f BP |
89 | } |
90 | ||
4663f9e0 BP |
91 | static void |
92 | nxm_init(void) | |
93 | { | |
94 | static pthread_once_t once = PTHREAD_ONCE_INIT; | |
95 | pthread_once(&once, nxm_do_init); | |
96 | } | |
97 | ||
6a885fd0 BP |
98 | /* Returns true if 'wc' wildcards all the bits in field 'mf', false if 'wc' |
99 | * specifies at least one bit in the field. | |
100 | * | |
101 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
102 | * meets 'mf''s prerequisites. */ | |
103 | bool | |
104 | mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc) | |
105 | { | |
106 | switch (mf->id) { | |
a79f29f2 AZ |
107 | case MFF_DP_HASH: |
108 | return !wc->masks.dp_hash; | |
109 | case MFF_RECIRC_ID: | |
110 | return !wc->masks.recirc_id; | |
18080541 BP |
111 | case MFF_CONJ_ID: |
112 | return !wc->masks.conj_id; | |
4fe3445a | 113 | case MFF_TUN_SRC: |
0ad90c84 | 114 | return !wc->masks.tunnel.ip_src; |
4fe3445a | 115 | case MFF_TUN_DST: |
0ad90c84 JR |
116 | return !wc->masks.tunnel.ip_dst; |
117 | case MFF_TUN_ID: | |
4fe3445a PS |
118 | case MFF_TUN_TOS: |
119 | case MFF_TUN_TTL: | |
120 | case MFF_TUN_FLAGS: | |
296e07ac | 121 | return !wc->masks.tunnel.tun_id; |
969fc56c | 122 | case MFF_METADATA: |
26720e24 | 123 | return !wc->masks.metadata; |
0bdc4bec | 124 | case MFF_IN_PORT: |
72333065 | 125 | case MFF_IN_PORT_OXM: |
4e022ec0 | 126 | return !wc->masks.in_port.ofp_port; |
1b567fb9 AA |
127 | case MFF_SKB_PRIORITY: |
128 | return !wc->masks.skb_priority; | |
1362e248 JG |
129 | case MFF_PKT_MARK: |
130 | return !wc->masks.pkt_mark; | |
0d7e2fe4 | 131 | CASE_MFF_REGS: |
26720e24 | 132 | return !wc->masks.regs[mf->id - MFF_REG0]; |
79fe0f46 BP |
133 | CASE_MFF_XREGS: |
134 | return !flow_get_xreg(&wc->masks, mf->id - MFF_XREG0); | |
c61f3870 BP |
135 | case MFF_ACTSET_OUTPUT: |
136 | return !wc->masks.actset_output; | |
6a885fd0 | 137 | |
73c0ce34 | 138 | case MFF_ETH_SRC: |
26720e24 | 139 | return eth_addr_is_zero(wc->masks.dl_src); |
6a885fd0 | 140 | case MFF_ETH_DST: |
26720e24 | 141 | return eth_addr_is_zero(wc->masks.dl_dst); |
e2170cff | 142 | case MFF_ETH_TYPE: |
26720e24 | 143 | return !wc->masks.dl_type; |
6a885fd0 | 144 | |
e878338b SH |
145 | case MFF_ARP_SHA: |
146 | case MFF_ND_SLL: | |
26720e24 | 147 | return eth_addr_is_zero(wc->masks.arp_sha); |
e878338b SH |
148 | |
149 | case MFF_ARP_THA: | |
150 | case MFF_ND_TLL: | |
26720e24 | 151 | return eth_addr_is_zero(wc->masks.arp_tha); |
e878338b | 152 | |
6a885fd0 | 153 | case MFF_VLAN_TCI: |
26720e24 | 154 | return !wc->masks.vlan_tci; |
441c57a9 | 155 | case MFF_DL_VLAN: |
26720e24 | 156 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK)); |
cc34bc8c | 157 | case MFF_VLAN_VID: |
26720e24 | 158 | return !(wc->masks.vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI)); |
441c57a9 | 159 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 160 | case MFF_VLAN_PCP: |
26720e24 | 161 | return !(wc->masks.vlan_tci & htons(VLAN_PCP_MASK)); |
6a885fd0 | 162 | |
b02475c5 | 163 | case MFF_MPLS_LABEL: |
8bfd0fda | 164 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK)); |
b02475c5 | 165 | case MFF_MPLS_TC: |
60df616f | 166 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_TC_MASK)); |
b02475c5 | 167 | case MFF_MPLS_BOS: |
60df616f | 168 | return !(wc->masks.mpls_lse[0] & htonl(MPLS_BOS_MASK)); |
b02475c5 | 169 | |
6a885fd0 | 170 | case MFF_IPV4_SRC: |
26720e24 | 171 | return !wc->masks.nw_src; |
6a885fd0 | 172 | case MFF_IPV4_DST: |
26720e24 | 173 | return !wc->masks.nw_dst; |
6a885fd0 BP |
174 | |
175 | case MFF_IPV6_SRC: | |
26720e24 | 176 | return ipv6_mask_is_any(&wc->masks.ipv6_src); |
6a885fd0 | 177 | case MFF_IPV6_DST: |
26720e24 | 178 | return ipv6_mask_is_any(&wc->masks.ipv6_dst); |
6a885fd0 | 179 | |
32455024 | 180 | case MFF_IPV6_LABEL: |
26720e24 | 181 | return !wc->masks.ipv6_label; |
32455024 | 182 | |
851d3105 | 183 | case MFF_IP_PROTO: |
26720e24 | 184 | return !wc->masks.nw_proto; |
5d9499c4 | 185 | case MFF_IP_DSCP: |
1638b906 | 186 | case MFF_IP_DSCP_SHIFTED: |
26720e24 | 187 | return !(wc->masks.nw_tos & IP_DSCP_MASK); |
5d9499c4 | 188 | case MFF_IP_ECN: |
26720e24 | 189 | return !(wc->masks.nw_tos & IP_ECN_MASK); |
3840c406 | 190 | case MFF_IP_TTL: |
26720e24 | 191 | return !wc->masks.nw_ttl; |
5d9499c4 | 192 | |
47284b1f | 193 | case MFF_ND_TARGET: |
26720e24 | 194 | return ipv6_mask_is_any(&wc->masks.nd_target); |
47284b1f | 195 | |
7257b535 | 196 | case MFF_IP_FRAG: |
26720e24 | 197 | return !(wc->masks.nw_frag & FLOW_NW_FRAG_MASK); |
7257b535 | 198 | |
851d3105 | 199 | case MFF_ARP_OP: |
26720e24 | 200 | return !wc->masks.nw_proto; |
6a885fd0 | 201 | case MFF_ARP_SPA: |
26720e24 | 202 | return !wc->masks.nw_src; |
6a885fd0 | 203 | case MFF_ARP_TPA: |
26720e24 | 204 | return !wc->masks.nw_dst; |
6a885fd0 | 205 | |
73f33563 BP |
206 | case MFF_TCP_SRC: |
207 | case MFF_UDP_SRC: | |
0d56eaf2 | 208 | case MFF_SCTP_SRC: |
73f33563 BP |
209 | case MFF_ICMPV4_TYPE: |
210 | case MFF_ICMPV6_TYPE: | |
26720e24 | 211 | return !wc->masks.tp_src; |
73f33563 BP |
212 | case MFF_TCP_DST: |
213 | case MFF_UDP_DST: | |
0d56eaf2 | 214 | case MFF_SCTP_DST: |
73f33563 BP |
215 | case MFF_ICMPV4_CODE: |
216 | case MFF_ICMPV6_CODE: | |
26720e24 | 217 | return !wc->masks.tp_dst; |
dc235f7f JR |
218 | case MFF_TCP_FLAGS: |
219 | return !wc->masks.tcp_flags; | |
73f33563 | 220 | |
6a885fd0 BP |
221 | case MFF_N_IDS: |
222 | default: | |
428b2edd | 223 | OVS_NOT_REACHED(); |
6a885fd0 BP |
224 | } |
225 | } | |
226 | ||
227 | /* Initializes 'mask' with the wildcard bit pattern for field 'mf' within 'wc'. | |
228 | * Each bit in 'mask' will be set to 1 if the bit is significant for matching | |
229 | * purposes, or to 0 if it is wildcarded. | |
230 | * | |
231 | * The caller is responsible for ensuring that 'wc' corresponds to a flow that | |
232 | * meets 'mf''s prerequisites. */ | |
233 | void | |
234 | mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc, | |
235 | union mf_value *mask) | |
236 | { | |
fb15feb0 | 237 | mf_get_value(mf, &wc->masks, mask); |
6a885fd0 BP |
238 | } |
239 | ||
240 | /* Tests whether 'mask' is a valid wildcard bit pattern for 'mf'. Returns true | |
241 | * if the mask is valid, false otherwise. */ | |
242 | bool | |
243 | mf_is_mask_valid(const struct mf_field *mf, const union mf_value *mask) | |
244 | { | |
245 | switch (mf->maskable) { | |
246 | case MFM_NONE: | |
53cb9c3e JR |
247 | return (is_all_zeros(mask, mf->n_bytes) || |
248 | is_all_ones(mask, mf->n_bytes)); | |
6a885fd0 BP |
249 | |
250 | case MFM_FULLY: | |
251 | return true; | |
6a885fd0 BP |
252 | } |
253 | ||
428b2edd | 254 | OVS_NOT_REACHED(); |
6a885fd0 BP |
255 | } |
256 | ||
6a885fd0 BP |
257 | /* Returns true if 'flow' meets the prerequisites for 'mf', false otherwise. */ |
258 | bool | |
259 | mf_are_prereqs_ok(const struct mf_field *mf, const struct flow *flow) | |
260 | { | |
261 | switch (mf->prereqs) { | |
262 | case MFP_NONE: | |
263 | return true; | |
264 | ||
265 | case MFP_ARP: | |
8087f5ff MM |
266 | return (flow->dl_type == htons(ETH_TYPE_ARP) || |
267 | flow->dl_type == htons(ETH_TYPE_RARP)); | |
6a885fd0 BP |
268 | case MFP_IPV4: |
269 | return flow->dl_type == htons(ETH_TYPE_IP); | |
270 | case MFP_IPV6: | |
271 | return flow->dl_type == htons(ETH_TYPE_IPV6); | |
8069b0da | 272 | case MFP_VLAN_VID: |
5921e99a | 273 | return (flow->vlan_tci & htons(VLAN_CFI)) != 0; |
b02475c5 SH |
274 | case MFP_MPLS: |
275 | return eth_type_mpls(flow->dl_type); | |
6a885fd0 BP |
276 | case MFP_IP_ANY: |
277 | return is_ip_any(flow); | |
278 | ||
279 | case MFP_TCP: | |
b8778a0d JR |
280 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_TCP |
281 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
6a885fd0 | 282 | case MFP_UDP: |
b8778a0d JR |
283 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_UDP |
284 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
0d56eaf2 | 285 | case MFP_SCTP: |
b8778a0d JR |
286 | return is_ip_any(flow) && flow->nw_proto == IPPROTO_SCTP |
287 | && !(flow->nw_frag & FLOW_NW_FRAG_LATER); | |
268a95e0 BP |
288 | case MFP_ICMPV4: |
289 | return is_icmpv4(flow); | |
6a885fd0 BP |
290 | case MFP_ICMPV6: |
291 | return is_icmpv6(flow); | |
6a885fd0 BP |
292 | |
293 | case MFP_ND: | |
294 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
295 | && flow->tp_dst == htons(0) |
296 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) || | |
297 | flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
298 | case MFP_ND_SOLICIT: |
299 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
300 | && flow->tp_dst == htons(0) |
301 | && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT))); | |
6a885fd0 BP |
302 | case MFP_ND_ADVERT: |
303 | return (is_icmpv6(flow) | |
3ee8a9f0 BP |
304 | && flow->tp_dst == htons(0) |
305 | && (flow->tp_src == htons(ND_NEIGHBOR_ADVERT))); | |
6a885fd0 BP |
306 | } |
307 | ||
428b2edd | 308 | OVS_NOT_REACHED(); |
6a885fd0 BP |
309 | } |
310 | ||
b283836c JR |
311 | /* Set field and it's prerequisities in the mask. |
312 | * This is only ever called for writeable 'mf's, but we do not make the | |
313 | * distinction here. */ | |
314 | void | |
315 | mf_mask_field_and_prereqs(const struct mf_field *mf, struct flow *mask) | |
316 | { | |
317 | static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER; | |
318 | ||
319 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
320 | ||
321 | switch (mf->prereqs) { | |
322 | case MFP_ND: | |
323 | case MFP_ND_SOLICIT: | |
324 | case MFP_ND_ADVERT: | |
325 | mask->tp_src = OVS_BE16_MAX; | |
326 | mask->tp_dst = OVS_BE16_MAX; | |
327 | /* Fall through. */ | |
328 | case MFP_TCP: | |
329 | case MFP_UDP: | |
330 | case MFP_SCTP: | |
331 | case MFP_ICMPV4: | |
332 | case MFP_ICMPV6: | |
b8778a0d | 333 | /* nw_frag always unwildcarded. */ |
b283836c JR |
334 | mask->nw_proto = 0xff; |
335 | /* Fall through. */ | |
336 | case MFP_ARP: | |
337 | case MFP_IPV4: | |
338 | case MFP_IPV6: | |
339 | case MFP_MPLS: | |
340 | case MFP_IP_ANY: | |
341 | mask->dl_type = OVS_BE16_MAX; | |
342 | break; | |
343 | case MFP_VLAN_VID: | |
344 | mask->vlan_tci |= htons(VLAN_CFI); | |
345 | break; | |
346 | case MFP_NONE: | |
347 | break; | |
348 | } | |
349 | } | |
350 | ||
351 | ||
6a885fd0 BP |
352 | /* Returns true if 'value' may be a valid value *as part of a masked match*, |
353 | * false otherwise. | |
354 | * | |
355 | * A value is not rejected just because it is not valid for the field in | |
356 | * question, but only if it doesn't make sense to test the bits in question at | |
357 | * all. For example, the MFF_VLAN_TCI field will never have a nonzero value | |
358 | * without the VLAN_CFI bit being set, but we can't reject those values because | |
359 | * it is still legitimate to test just for those bits (see the documentation | |
360 | * for NXM_OF_VLAN_TCI in nicira-ext.h). On the other hand, there is never a | |
530180fd | 361 | * reason to set the low bit of MFF_IP_DSCP to 1, so we reject that. */ |
6a885fd0 BP |
362 | bool |
363 | mf_is_value_valid(const struct mf_field *mf, const union mf_value *value) | |
364 | { | |
365 | switch (mf->id) { | |
a79f29f2 AZ |
366 | case MFF_DP_HASH: |
367 | case MFF_RECIRC_ID: | |
18080541 | 368 | case MFF_CONJ_ID: |
6a885fd0 | 369 | case MFF_TUN_ID: |
4fe3445a PS |
370 | case MFF_TUN_SRC: |
371 | case MFF_TUN_DST: | |
372 | case MFF_TUN_TOS: | |
373 | case MFF_TUN_TTL: | |
374 | case MFF_TUN_FLAGS: | |
969fc56c | 375 | case MFF_METADATA: |
6a885fd0 | 376 | case MFF_IN_PORT: |
1b567fb9 | 377 | case MFF_SKB_PRIORITY: |
1362e248 | 378 | case MFF_PKT_MARK: |
0d7e2fe4 | 379 | CASE_MFF_REGS: |
79fe0f46 | 380 | CASE_MFF_XREGS: |
6a885fd0 BP |
381 | case MFF_ETH_SRC: |
382 | case MFF_ETH_DST: | |
383 | case MFF_ETH_TYPE: | |
384 | case MFF_VLAN_TCI: | |
385 | case MFF_IPV4_SRC: | |
386 | case MFF_IPV4_DST: | |
387 | case MFF_IPV6_SRC: | |
388 | case MFF_IPV6_DST: | |
389 | case MFF_IP_PROTO: | |
a61680c6 | 390 | case MFF_IP_TTL: |
6a885fd0 BP |
391 | case MFF_ARP_SPA: |
392 | case MFF_ARP_TPA: | |
393 | case MFF_ARP_SHA: | |
394 | case MFF_ARP_THA: | |
395 | case MFF_TCP_SRC: | |
396 | case MFF_TCP_DST: | |
397 | case MFF_UDP_SRC: | |
398 | case MFF_UDP_DST: | |
0d56eaf2 JS |
399 | case MFF_SCTP_SRC: |
400 | case MFF_SCTP_DST: | |
268a95e0 BP |
401 | case MFF_ICMPV4_TYPE: |
402 | case MFF_ICMPV4_CODE: | |
403 | case MFF_ICMPV6_TYPE: | |
404 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
405 | case MFF_ND_TARGET: |
406 | case MFF_ND_SLL: | |
407 | case MFF_ND_TLL: | |
408 | return true; | |
409 | ||
c61f3870 BP |
410 | case MFF_IN_PORT_OXM: |
411 | case MFF_ACTSET_OUTPUT: { | |
4e022ec0 | 412 | ofp_port_t port; |
72333065 JR |
413 | return !ofputil_port_from_ofp11(value->be32, &port); |
414 | } | |
415 | ||
530180fd | 416 | case MFF_IP_DSCP: |
7257b535 | 417 | return !(value->u8 & ~IP_DSCP_MASK); |
1638b906 BP |
418 | case MFF_IP_DSCP_SHIFTED: |
419 | return !(value->u8 & (~IP_DSCP_MASK >> 2)); | |
530180fd JP |
420 | case MFF_IP_ECN: |
421 | return !(value->u8 & ~IP_ECN_MASK); | |
7257b535 | 422 | case MFF_IP_FRAG: |
eadef313 | 423 | return !(value->u8 & ~FLOW_NW_FRAG_MASK); |
dc235f7f JR |
424 | case MFF_TCP_FLAGS: |
425 | return !(value->be16 & ~htons(0x0fff)); | |
6a885fd0 BP |
426 | |
427 | case MFF_ARP_OP: | |
428 | return !(value->be16 & htons(0xff00)); | |
429 | ||
441c57a9 | 430 | case MFF_DL_VLAN: |
6a885fd0 | 431 | return !(value->be16 & htons(VLAN_CFI | VLAN_PCP_MASK)); |
cc34bc8c BP |
432 | case MFF_VLAN_VID: |
433 | return !(value->be16 & htons(VLAN_PCP_MASK)); | |
6a885fd0 | 434 | |
441c57a9 | 435 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 436 | case MFF_VLAN_PCP: |
24016f5a | 437 | return !(value->u8 & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)); |
6a885fd0 | 438 | |
fa8223b7 JP |
439 | case MFF_IPV6_LABEL: |
440 | return !(value->be32 & ~htonl(IPV6_LABEL_MASK)); | |
441 | ||
b02475c5 SH |
442 | case MFF_MPLS_LABEL: |
443 | return !(value->be32 & ~htonl(MPLS_LABEL_MASK >> MPLS_LABEL_SHIFT)); | |
444 | ||
445 | case MFF_MPLS_TC: | |
446 | return !(value->u8 & ~(MPLS_TC_MASK >> MPLS_TC_SHIFT)); | |
447 | ||
448 | case MFF_MPLS_BOS: | |
449 | return !(value->u8 & ~(MPLS_BOS_MASK >> MPLS_BOS_SHIFT)); | |
450 | ||
6a885fd0 BP |
451 | case MFF_N_IDS: |
452 | default: | |
428b2edd | 453 | OVS_NOT_REACHED(); |
6a885fd0 BP |
454 | } |
455 | } | |
456 | ||
457 | /* Copies the value of field 'mf' from 'flow' into 'value'. The caller is | |
458 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites. */ | |
459 | void | |
460 | mf_get_value(const struct mf_field *mf, const struct flow *flow, | |
461 | union mf_value *value) | |
462 | { | |
463 | switch (mf->id) { | |
a79f29f2 AZ |
464 | case MFF_DP_HASH: |
465 | value->be32 = htonl(flow->dp_hash); | |
466 | break; | |
467 | case MFF_RECIRC_ID: | |
468 | value->be32 = htonl(flow->recirc_id); | |
469 | break; | |
18080541 BP |
470 | case MFF_CONJ_ID: |
471 | value->be32 = htonl(flow->conj_id); | |
472 | break; | |
6a885fd0 | 473 | case MFF_TUN_ID: |
296e07ac | 474 | value->be64 = flow->tunnel.tun_id; |
6a885fd0 | 475 | break; |
4fe3445a PS |
476 | case MFF_TUN_SRC: |
477 | value->be32 = flow->tunnel.ip_src; | |
478 | break; | |
479 | case MFF_TUN_DST: | |
480 | value->be32 = flow->tunnel.ip_dst; | |
481 | break; | |
482 | case MFF_TUN_FLAGS: | |
483 | value->be16 = htons(flow->tunnel.flags); | |
484 | break; | |
485 | case MFF_TUN_TTL: | |
486 | value->u8 = flow->tunnel.ip_ttl; | |
487 | break; | |
488 | case MFF_TUN_TOS: | |
489 | value->u8 = flow->tunnel.ip_tos; | |
490 | break; | |
491 | ||
969fc56c JS |
492 | case MFF_METADATA: |
493 | value->be64 = flow->metadata; | |
494 | break; | |
6a885fd0 BP |
495 | |
496 | case MFF_IN_PORT: | |
4e022ec0 | 497 | value->be16 = htons(ofp_to_u16(flow->in_port.ofp_port)); |
6a885fd0 | 498 | break; |
72333065 | 499 | case MFF_IN_PORT_OXM: |
4e022ec0 | 500 | value->be32 = ofputil_port_to_ofp11(flow->in_port.ofp_port); |
72333065 | 501 | break; |
c61f3870 BP |
502 | case MFF_ACTSET_OUTPUT: |
503 | value->be32 = ofputil_port_to_ofp11(flow->actset_output); | |
504 | break; | |
72333065 | 505 | |
1b567fb9 | 506 | case MFF_SKB_PRIORITY: |
a81f0a44 | 507 | value->be32 = htonl(flow->skb_priority); |
1b567fb9 AA |
508 | break; |
509 | ||
1362e248 JG |
510 | case MFF_PKT_MARK: |
511 | value->be32 = htonl(flow->pkt_mark); | |
1b567fb9 AA |
512 | break; |
513 | ||
0d7e2fe4 | 514 | CASE_MFF_REGS: |
2f98b0b7 | 515 | value->be32 = htonl(flow->regs[mf->id - MFF_REG0]); |
6a885fd0 BP |
516 | break; |
517 | ||
79fe0f46 BP |
518 | CASE_MFF_XREGS: |
519 | value->be64 = htonll(flow_get_xreg(flow, mf->id - MFF_XREG0)); | |
520 | break; | |
521 | ||
6a885fd0 BP |
522 | case MFF_ETH_SRC: |
523 | memcpy(value->mac, flow->dl_src, ETH_ADDR_LEN); | |
524 | break; | |
525 | ||
526 | case MFF_ETH_DST: | |
527 | memcpy(value->mac, flow->dl_dst, ETH_ADDR_LEN); | |
528 | break; | |
529 | ||
530 | case MFF_ETH_TYPE: | |
531 | value->be16 = flow->dl_type; | |
532 | break; | |
533 | ||
534 | case MFF_VLAN_TCI: | |
535 | value->be16 = flow->vlan_tci; | |
536 | break; | |
537 | ||
441c57a9 | 538 | case MFF_DL_VLAN: |
6a885fd0 BP |
539 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK); |
540 | break; | |
cc34bc8c BP |
541 | case MFF_VLAN_VID: |
542 | value->be16 = flow->vlan_tci & htons(VLAN_VID_MASK | VLAN_CFI); | |
543 | break; | |
6a885fd0 | 544 | |
441c57a9 | 545 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 546 | case MFF_VLAN_PCP: |
6a885fd0 BP |
547 | value->u8 = vlan_tci_to_pcp(flow->vlan_tci); |
548 | break; | |
549 | ||
b02475c5 | 550 | case MFF_MPLS_LABEL: |
8bfd0fda | 551 | value->be32 = htonl(mpls_lse_to_label(flow->mpls_lse[0])); |
b02475c5 SH |
552 | break; |
553 | ||
554 | case MFF_MPLS_TC: | |
8bfd0fda | 555 | value->u8 = mpls_lse_to_tc(flow->mpls_lse[0]); |
b02475c5 SH |
556 | break; |
557 | ||
558 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
559 | value->u8 = mpls_lse_to_bos(flow->mpls_lse[0]); |
560 | break; | |
b02475c5 | 561 | |
6a885fd0 BP |
562 | case MFF_IPV4_SRC: |
563 | value->be32 = flow->nw_src; | |
564 | break; | |
565 | ||
566 | case MFF_IPV4_DST: | |
567 | value->be32 = flow->nw_dst; | |
568 | break; | |
569 | ||
570 | case MFF_IPV6_SRC: | |
571 | value->ipv6 = flow->ipv6_src; | |
572 | break; | |
573 | ||
574 | case MFF_IPV6_DST: | |
575 | value->ipv6 = flow->ipv6_dst; | |
576 | break; | |
577 | ||
fa8223b7 JP |
578 | case MFF_IPV6_LABEL: |
579 | value->be32 = flow->ipv6_label; | |
580 | break; | |
581 | ||
6a885fd0 BP |
582 | case MFF_IP_PROTO: |
583 | value->u8 = flow->nw_proto; | |
584 | break; | |
585 | ||
530180fd | 586 | case MFF_IP_DSCP: |
eadef313 | 587 | value->u8 = flow->nw_tos & IP_DSCP_MASK; |
7257b535 BP |
588 | break; |
589 | ||
1638b906 BP |
590 | case MFF_IP_DSCP_SHIFTED: |
591 | value->u8 = flow->nw_tos >> 2; | |
592 | break; | |
593 | ||
530180fd | 594 | case MFF_IP_ECN: |
eadef313 | 595 | value->u8 = flow->nw_tos & IP_ECN_MASK; |
530180fd JP |
596 | break; |
597 | ||
a61680c6 JP |
598 | case MFF_IP_TTL: |
599 | value->u8 = flow->nw_ttl; | |
600 | break; | |
601 | ||
7257b535 | 602 | case MFF_IP_FRAG: |
eadef313 | 603 | value->u8 = flow->nw_frag; |
6a885fd0 BP |
604 | break; |
605 | ||
606 | case MFF_ARP_OP: | |
607 | value->be16 = htons(flow->nw_proto); | |
608 | break; | |
609 | ||
610 | case MFF_ARP_SPA: | |
611 | value->be32 = flow->nw_src; | |
612 | break; | |
613 | ||
614 | case MFF_ARP_TPA: | |
615 | value->be32 = flow->nw_dst; | |
616 | break; | |
617 | ||
618 | case MFF_ARP_SHA: | |
619 | case MFF_ND_SLL: | |
620 | memcpy(value->mac, flow->arp_sha, ETH_ADDR_LEN); | |
621 | break; | |
622 | ||
623 | case MFF_ARP_THA: | |
624 | case MFF_ND_TLL: | |
625 | memcpy(value->mac, flow->arp_tha, ETH_ADDR_LEN); | |
626 | break; | |
627 | ||
628 | case MFF_TCP_SRC: | |
6a885fd0 | 629 | case MFF_UDP_SRC: |
0d56eaf2 | 630 | case MFF_SCTP_SRC: |
6a885fd0 BP |
631 | value->be16 = flow->tp_src; |
632 | break; | |
633 | ||
71baec06 | 634 | case MFF_TCP_DST: |
6a885fd0 | 635 | case MFF_UDP_DST: |
0d56eaf2 | 636 | case MFF_SCTP_DST: |
6a885fd0 BP |
637 | value->be16 = flow->tp_dst; |
638 | break; | |
639 | ||
dc235f7f JR |
640 | case MFF_TCP_FLAGS: |
641 | value->be16 = flow->tcp_flags; | |
642 | break; | |
643 | ||
268a95e0 BP |
644 | case MFF_ICMPV4_TYPE: |
645 | case MFF_ICMPV6_TYPE: | |
6a885fd0 BP |
646 | value->u8 = ntohs(flow->tp_src); |
647 | break; | |
648 | ||
268a95e0 BP |
649 | case MFF_ICMPV4_CODE: |
650 | case MFF_ICMPV6_CODE: | |
6a885fd0 BP |
651 | value->u8 = ntohs(flow->tp_dst); |
652 | break; | |
653 | ||
654 | case MFF_ND_TARGET: | |
655 | value->ipv6 = flow->nd_target; | |
656 | break; | |
657 | ||
658 | case MFF_N_IDS: | |
659 | default: | |
428b2edd | 660 | OVS_NOT_REACHED(); |
6a885fd0 BP |
661 | } |
662 | } | |
663 | ||
81a76618 BP |
664 | /* Makes 'match' match field 'mf' exactly, with the value matched taken from |
665 | * 'value'. The caller is responsible for ensuring that 'match' meets 'mf''s | |
6a885fd0 BP |
666 | * prerequisites. */ |
667 | void | |
668 | mf_set_value(const struct mf_field *mf, | |
81a76618 | 669 | const union mf_value *value, struct match *match) |
6a885fd0 BP |
670 | { |
671 | switch (mf->id) { | |
a79f29f2 AZ |
672 | case MFF_DP_HASH: |
673 | match_set_dp_hash(match, ntohl(value->be32)); | |
674 | break; | |
675 | case MFF_RECIRC_ID: | |
676 | match_set_recirc_id(match, ntohl(value->be32)); | |
677 | break; | |
18080541 BP |
678 | case MFF_CONJ_ID: |
679 | match_set_conj_id(match, ntohl(value->be32)); | |
680 | break; | |
6a885fd0 | 681 | case MFF_TUN_ID: |
81a76618 | 682 | match_set_tun_id(match, value->be64); |
6a885fd0 | 683 | break; |
4fe3445a PS |
684 | case MFF_TUN_SRC: |
685 | match_set_tun_src(match, value->be32); | |
686 | break; | |
687 | case MFF_TUN_DST: | |
688 | match_set_tun_dst(match, value->be32); | |
689 | break; | |
690 | case MFF_TUN_FLAGS: | |
691 | match_set_tun_flags(match, ntohs(value->be16)); | |
692 | break; | |
693 | case MFF_TUN_TOS: | |
694 | match_set_tun_tos(match, value->u8); | |
695 | break; | |
696 | case MFF_TUN_TTL: | |
697 | match_set_tun_ttl(match, value->u8); | |
698 | break; | |
699 | ||
969fc56c | 700 | case MFF_METADATA: |
81a76618 | 701 | match_set_metadata(match, value->be64); |
969fc56c | 702 | break; |
6a885fd0 BP |
703 | |
704 | case MFF_IN_PORT: | |
4e022ec0 | 705 | match_set_in_port(match, u16_to_ofp(ntohs(value->be16))); |
6a885fd0 BP |
706 | break; |
707 | ||
72333065 | 708 | case MFF_IN_PORT_OXM: { |
4e022ec0 | 709 | ofp_port_t port; |
bc146369 | 710 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
711 | match_set_in_port(match, port); |
712 | break; | |
713 | } | |
c61f3870 BP |
714 | case MFF_ACTSET_OUTPUT: { |
715 | ofp_port_t port; | |
716 | ofputil_port_from_ofp11(value->be32, &port); | |
717 | match_set_actset_output(match, port); | |
718 | break; | |
719 | } | |
72333065 | 720 | |
1b567fb9 AA |
721 | case MFF_SKB_PRIORITY: |
722 | match_set_skb_priority(match, ntohl(value->be32)); | |
723 | break; | |
724 | ||
1362e248 JG |
725 | case MFF_PKT_MARK: |
726 | match_set_pkt_mark(match, ntohl(value->be32)); | |
1b567fb9 AA |
727 | break; |
728 | ||
0d7e2fe4 | 729 | CASE_MFF_REGS: |
81a76618 | 730 | match_set_reg(match, mf->id - MFF_REG0, ntohl(value->be32)); |
6a885fd0 | 731 | break; |
6a885fd0 | 732 | |
79fe0f46 BP |
733 | CASE_MFF_XREGS: |
734 | match_set_xreg(match, mf->id - MFF_XREG0, ntohll(value->be64)); | |
735 | break; | |
736 | ||
6a885fd0 | 737 | case MFF_ETH_SRC: |
81a76618 | 738 | match_set_dl_src(match, value->mac); |
6a885fd0 BP |
739 | break; |
740 | ||
741 | case MFF_ETH_DST: | |
81a76618 | 742 | match_set_dl_dst(match, value->mac); |
6a885fd0 BP |
743 | break; |
744 | ||
745 | case MFF_ETH_TYPE: | |
81a76618 | 746 | match_set_dl_type(match, value->be16); |
6a885fd0 BP |
747 | break; |
748 | ||
749 | case MFF_VLAN_TCI: | |
81a76618 | 750 | match_set_dl_tci(match, value->be16); |
6a885fd0 BP |
751 | break; |
752 | ||
441c57a9 | 753 | case MFF_DL_VLAN: |
81a76618 | 754 | match_set_dl_vlan(match, value->be16); |
6a885fd0 | 755 | break; |
cc34bc8c | 756 | case MFF_VLAN_VID: |
81a76618 | 757 | match_set_vlan_vid(match, value->be16); |
cc34bc8c | 758 | break; |
6a885fd0 | 759 | |
441c57a9 | 760 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 761 | case MFF_VLAN_PCP: |
81a76618 | 762 | match_set_dl_vlan_pcp(match, value->u8); |
6a885fd0 BP |
763 | break; |
764 | ||
b02475c5 | 765 | case MFF_MPLS_LABEL: |
8bfd0fda | 766 | match_set_mpls_label(match, 0, value->be32); |
b02475c5 SH |
767 | break; |
768 | ||
769 | case MFF_MPLS_TC: | |
8bfd0fda | 770 | match_set_mpls_tc(match, 0, value->u8); |
b02475c5 SH |
771 | break; |
772 | ||
773 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
774 | match_set_mpls_bos(match, 0, value->u8); |
775 | break; | |
b02475c5 | 776 | |
6a885fd0 | 777 | case MFF_IPV4_SRC: |
81a76618 | 778 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
779 | break; |
780 | ||
781 | case MFF_IPV4_DST: | |
81a76618 | 782 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
783 | break; |
784 | ||
785 | case MFF_IPV6_SRC: | |
81a76618 | 786 | match_set_ipv6_src(match, &value->ipv6); |
6a885fd0 BP |
787 | break; |
788 | ||
789 | case MFF_IPV6_DST: | |
81a76618 | 790 | match_set_ipv6_dst(match, &value->ipv6); |
6a885fd0 BP |
791 | break; |
792 | ||
fa8223b7 | 793 | case MFF_IPV6_LABEL: |
81a76618 | 794 | match_set_ipv6_label(match, value->be32); |
fa8223b7 JP |
795 | break; |
796 | ||
6a885fd0 | 797 | case MFF_IP_PROTO: |
81a76618 | 798 | match_set_nw_proto(match, value->u8); |
6a885fd0 BP |
799 | break; |
800 | ||
530180fd | 801 | case MFF_IP_DSCP: |
81a76618 | 802 | match_set_nw_dscp(match, value->u8); |
530180fd JP |
803 | break; |
804 | ||
1638b906 BP |
805 | case MFF_IP_DSCP_SHIFTED: |
806 | match_set_nw_dscp(match, value->u8 << 2); | |
807 | break; | |
808 | ||
530180fd | 809 | case MFF_IP_ECN: |
81a76618 | 810 | match_set_nw_ecn(match, value->u8); |
6a885fd0 BP |
811 | break; |
812 | ||
a61680c6 | 813 | case MFF_IP_TTL: |
81a76618 | 814 | match_set_nw_ttl(match, value->u8); |
a61680c6 JP |
815 | break; |
816 | ||
7257b535 | 817 | case MFF_IP_FRAG: |
81a76618 | 818 | match_set_nw_frag(match, value->u8); |
7257b535 BP |
819 | break; |
820 | ||
6a885fd0 | 821 | case MFF_ARP_OP: |
81a76618 | 822 | match_set_nw_proto(match, ntohs(value->be16)); |
6a885fd0 BP |
823 | break; |
824 | ||
825 | case MFF_ARP_SPA: | |
81a76618 | 826 | match_set_nw_src(match, value->be32); |
6a885fd0 BP |
827 | break; |
828 | ||
829 | case MFF_ARP_TPA: | |
81a76618 | 830 | match_set_nw_dst(match, value->be32); |
6a885fd0 BP |
831 | break; |
832 | ||
833 | case MFF_ARP_SHA: | |
834 | case MFF_ND_SLL: | |
81a76618 | 835 | match_set_arp_sha(match, value->mac); |
6a885fd0 BP |
836 | break; |
837 | ||
838 | case MFF_ARP_THA: | |
839 | case MFF_ND_TLL: | |
81a76618 | 840 | match_set_arp_tha(match, value->mac); |
6a885fd0 BP |
841 | break; |
842 | ||
843 | case MFF_TCP_SRC: | |
6a885fd0 | 844 | case MFF_UDP_SRC: |
0d56eaf2 | 845 | case MFF_SCTP_SRC: |
81a76618 | 846 | match_set_tp_src(match, value->be16); |
6a885fd0 BP |
847 | break; |
848 | ||
71baec06 | 849 | case MFF_TCP_DST: |
6a885fd0 | 850 | case MFF_UDP_DST: |
0d56eaf2 | 851 | case MFF_SCTP_DST: |
81a76618 | 852 | match_set_tp_dst(match, value->be16); |
6a885fd0 BP |
853 | break; |
854 | ||
dc235f7f JR |
855 | case MFF_TCP_FLAGS: |
856 | match_set_tcp_flags(match, value->be16); | |
857 | break; | |
858 | ||
268a95e0 BP |
859 | case MFF_ICMPV4_TYPE: |
860 | case MFF_ICMPV6_TYPE: | |
81a76618 | 861 | match_set_icmp_type(match, value->u8); |
6a885fd0 BP |
862 | break; |
863 | ||
268a95e0 BP |
864 | case MFF_ICMPV4_CODE: |
865 | case MFF_ICMPV6_CODE: | |
81a76618 | 866 | match_set_icmp_code(match, value->u8); |
6a885fd0 BP |
867 | break; |
868 | ||
869 | case MFF_ND_TARGET: | |
81a76618 | 870 | match_set_nd_target(match, &value->ipv6); |
6a885fd0 BP |
871 | break; |
872 | ||
873 | case MFF_N_IDS: | |
874 | default: | |
428b2edd | 875 | OVS_NOT_REACHED(); |
6a885fd0 BP |
876 | } |
877 | } | |
878 | ||
5a0a5702 GS |
879 | /* Unwildcard 'mask' member field described by 'mf'. The caller is |
880 | * responsible for ensuring that 'mask' meets 'mf''s prerequisites. */ | |
881 | void | |
882 | mf_mask_field(const struct mf_field *mf, struct flow *mask) | |
883 | { | |
884 | static const union mf_value exact_match_mask = MF_EXACT_MASK_INITIALIZER; | |
885 | ||
886 | /* For MFF_DL_VLAN, we cannot send a all 1's to flow_set_dl_vlan() | |
887 | * as that will be considered as OFP10_VLAN_NONE. So consider it as a | |
888 | * special case. For the rest, calling mf_set_flow_value() is good | |
889 | * enough. */ | |
890 | if (mf->id == MFF_DL_VLAN) { | |
891 | flow_set_dl_vlan(mask, htons(VLAN_VID_MASK)); | |
892 | } else { | |
893 | mf_set_flow_value(mf, &exact_match_mask, mask); | |
894 | } | |
895 | } | |
896 | ||
910fb1d8 JP |
897 | /* Sets 'flow' member field described by 'mf' to 'value'. The caller is |
898 | * responsible for ensuring that 'flow' meets 'mf''s prerequisites.*/ | |
28da1f8f BP |
899 | void |
900 | mf_set_flow_value(const struct mf_field *mf, | |
901 | const union mf_value *value, struct flow *flow) | |
902 | { | |
903 | switch (mf->id) { | |
a79f29f2 AZ |
904 | case MFF_DP_HASH: |
905 | flow->dp_hash = ntohl(value->be32); | |
906 | break; | |
907 | case MFF_RECIRC_ID: | |
908 | flow->recirc_id = ntohl(value->be32); | |
909 | break; | |
18080541 BP |
910 | case MFF_CONJ_ID: |
911 | flow->conj_id = ntohl(value->be32); | |
912 | break; | |
28da1f8f | 913 | case MFF_TUN_ID: |
296e07ac | 914 | flow->tunnel.tun_id = value->be64; |
28da1f8f | 915 | break; |
4fe3445a PS |
916 | case MFF_TUN_SRC: |
917 | flow->tunnel.ip_src = value->be32; | |
918 | break; | |
919 | case MFF_TUN_DST: | |
920 | flow->tunnel.ip_dst = value->be32; | |
921 | break; | |
922 | case MFF_TUN_FLAGS: | |
923 | flow->tunnel.flags = ntohs(value->be16); | |
924 | break; | |
925 | case MFF_TUN_TOS: | |
926 | flow->tunnel.ip_tos = value->u8; | |
927 | break; | |
928 | case MFF_TUN_TTL: | |
929 | flow->tunnel.ip_ttl = value->u8; | |
930 | break; | |
931 | ||
969fc56c JS |
932 | case MFF_METADATA: |
933 | flow->metadata = value->be64; | |
934 | break; | |
28da1f8f BP |
935 | |
936 | case MFF_IN_PORT: | |
4e022ec0 | 937 | flow->in_port.ofp_port = u16_to_ofp(ntohs(value->be16)); |
28da1f8f BP |
938 | break; |
939 | ||
c61f3870 BP |
940 | case MFF_IN_PORT_OXM: |
941 | ofputil_port_from_ofp11(value->be32, &flow->in_port.ofp_port); | |
942 | break; | |
943 | case MFF_ACTSET_OUTPUT: | |
944 | ofputil_port_from_ofp11(value->be32, &flow->actset_output); | |
72333065 | 945 | break; |
72333065 | 946 | |
1b567fb9 AA |
947 | case MFF_SKB_PRIORITY: |
948 | flow->skb_priority = ntohl(value->be32); | |
949 | break; | |
950 | ||
1362e248 JG |
951 | case MFF_PKT_MARK: |
952 | flow->pkt_mark = ntohl(value->be32); | |
1b567fb9 AA |
953 | break; |
954 | ||
0d7e2fe4 | 955 | CASE_MFF_REGS: |
28da1f8f BP |
956 | flow->regs[mf->id - MFF_REG0] = ntohl(value->be32); |
957 | break; | |
28da1f8f | 958 | |
79fe0f46 BP |
959 | CASE_MFF_XREGS: |
960 | flow_set_xreg(flow, mf->id - MFF_XREG0, ntohll(value->be64)); | |
961 | break; | |
962 | ||
28da1f8f BP |
963 | case MFF_ETH_SRC: |
964 | memcpy(flow->dl_src, value->mac, ETH_ADDR_LEN); | |
965 | break; | |
966 | ||
967 | case MFF_ETH_DST: | |
b5a36e38 | 968 | memcpy(flow->dl_dst, value->mac, ETH_ADDR_LEN); |
28da1f8f BP |
969 | break; |
970 | ||
971 | case MFF_ETH_TYPE: | |
972 | flow->dl_type = value->be16; | |
973 | break; | |
974 | ||
975 | case MFF_VLAN_TCI: | |
976 | flow->vlan_tci = value->be16; | |
977 | break; | |
978 | ||
441c57a9 | 979 | case MFF_DL_VLAN: |
fb0451d9 | 980 | flow_set_dl_vlan(flow, value->be16); |
28da1f8f | 981 | break; |
cc34bc8c BP |
982 | case MFF_VLAN_VID: |
983 | flow_set_vlan_vid(flow, value->be16); | |
984 | break; | |
28da1f8f | 985 | |
441c57a9 | 986 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 987 | case MFF_VLAN_PCP: |
28da1f8f BP |
988 | flow_set_vlan_pcp(flow, value->u8); |
989 | break; | |
990 | ||
b02475c5 | 991 | case MFF_MPLS_LABEL: |
8bfd0fda | 992 | flow_set_mpls_label(flow, 0, value->be32); |
b02475c5 SH |
993 | break; |
994 | ||
995 | case MFF_MPLS_TC: | |
8bfd0fda | 996 | flow_set_mpls_tc(flow, 0, value->u8); |
b02475c5 SH |
997 | break; |
998 | ||
999 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1000 | flow_set_mpls_bos(flow, 0, value->u8); |
1001 | break; | |
b02475c5 | 1002 | |
28da1f8f BP |
1003 | case MFF_IPV4_SRC: |
1004 | flow->nw_src = value->be32; | |
1005 | break; | |
1006 | ||
1007 | case MFF_IPV4_DST: | |
1008 | flow->nw_dst = value->be32; | |
1009 | break; | |
1010 | ||
1011 | case MFF_IPV6_SRC: | |
1012 | flow->ipv6_src = value->ipv6; | |
1013 | break; | |
1014 | ||
1015 | case MFF_IPV6_DST: | |
1016 | flow->ipv6_dst = value->ipv6; | |
1017 | break; | |
1018 | ||
1019 | case MFF_IPV6_LABEL: | |
1020 | flow->ipv6_label = value->be32 & ~htonl(IPV6_LABEL_MASK); | |
1021 | break; | |
1022 | ||
1023 | case MFF_IP_PROTO: | |
1024 | flow->nw_proto = value->u8; | |
1025 | break; | |
1026 | ||
1027 | case MFF_IP_DSCP: | |
1028 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1029 | flow->nw_tos |= value->u8 & IP_DSCP_MASK; | |
1030 | break; | |
1031 | ||
1638b906 BP |
1032 | case MFF_IP_DSCP_SHIFTED: |
1033 | flow->nw_tos &= ~IP_DSCP_MASK; | |
1034 | flow->nw_tos |= value->u8 << 2; | |
1035 | break; | |
1036 | ||
28da1f8f BP |
1037 | case MFF_IP_ECN: |
1038 | flow->nw_tos &= ~IP_ECN_MASK; | |
1039 | flow->nw_tos |= value->u8 & IP_ECN_MASK; | |
1040 | break; | |
1041 | ||
1042 | case MFF_IP_TTL: | |
1043 | flow->nw_ttl = value->u8; | |
1044 | break; | |
1045 | ||
1046 | case MFF_IP_FRAG: | |
c8abb8af | 1047 | flow->nw_frag = value->u8 & FLOW_NW_FRAG_MASK; |
28da1f8f BP |
1048 | break; |
1049 | ||
1050 | case MFF_ARP_OP: | |
1051 | flow->nw_proto = ntohs(value->be16); | |
1052 | break; | |
1053 | ||
1054 | case MFF_ARP_SPA: | |
1055 | flow->nw_src = value->be32; | |
1056 | break; | |
1057 | ||
1058 | case MFF_ARP_TPA: | |
1059 | flow->nw_dst = value->be32; | |
1060 | break; | |
1061 | ||
1062 | case MFF_ARP_SHA: | |
1063 | case MFF_ND_SLL: | |
1064 | memcpy(flow->arp_sha, value->mac, ETH_ADDR_LEN); | |
1065 | break; | |
1066 | ||
1067 | case MFF_ARP_THA: | |
1068 | case MFF_ND_TLL: | |
1069 | memcpy(flow->arp_tha, value->mac, ETH_ADDR_LEN); | |
1070 | break; | |
1071 | ||
1072 | case MFF_TCP_SRC: | |
1073 | case MFF_UDP_SRC: | |
0d56eaf2 | 1074 | case MFF_SCTP_SRC: |
28da1f8f BP |
1075 | flow->tp_src = value->be16; |
1076 | break; | |
1077 | ||
1078 | case MFF_TCP_DST: | |
1079 | case MFF_UDP_DST: | |
0d56eaf2 | 1080 | case MFF_SCTP_DST: |
28da1f8f BP |
1081 | flow->tp_dst = value->be16; |
1082 | break; | |
1083 | ||
dc235f7f JR |
1084 | case MFF_TCP_FLAGS: |
1085 | flow->tcp_flags = value->be16; | |
1086 | break; | |
1087 | ||
28da1f8f BP |
1088 | case MFF_ICMPV4_TYPE: |
1089 | case MFF_ICMPV6_TYPE: | |
1090 | flow->tp_src = htons(value->u8); | |
1091 | break; | |
1092 | ||
1093 | case MFF_ICMPV4_CODE: | |
1094 | case MFF_ICMPV6_CODE: | |
1095 | flow->tp_dst = htons(value->u8); | |
1096 | break; | |
1097 | ||
1098 | case MFF_ND_TARGET: | |
1099 | flow->nd_target = value->ipv6; | |
1100 | break; | |
1101 | ||
1102 | case MFF_N_IDS: | |
1103 | default: | |
428b2edd | 1104 | OVS_NOT_REACHED(); |
28da1f8f BP |
1105 | } |
1106 | } | |
1107 | ||
7eb4b1f1 BP |
1108 | /* Consider each of 'src', 'mask', and 'dst' as if they were arrays of 8*n |
1109 | * bits. Then, for each 0 <= i < 8 * n such that mask[i] == 1, sets dst[i] = | |
1110 | * src[i]. */ | |
1111 | static void | |
1112 | apply_mask(const uint8_t *src, const uint8_t *mask, uint8_t *dst, size_t n) | |
1113 | { | |
1114 | size_t i; | |
1115 | ||
1116 | for (i = 0; i < n; i++) { | |
1117 | dst[i] = (src[i] & mask[i]) | (dst[i] & ~mask[i]); | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | /* Sets 'flow' member field described by 'field' to 'value', except that bits | |
1122 | * for which 'mask' has a 0-bit keep their existing values. The caller is | |
1123 | * responsible for ensuring that 'flow' meets 'field''s prerequisites.*/ | |
1124 | void | |
1125 | mf_set_flow_value_masked(const struct mf_field *field, | |
1126 | const union mf_value *value, | |
1127 | const union mf_value *mask, | |
1128 | struct flow *flow) | |
1129 | { | |
1130 | union mf_value tmp; | |
1131 | ||
1132 | mf_get_value(field, flow, &tmp); | |
1133 | apply_mask((const uint8_t *) value, (const uint8_t *) mask, | |
1134 | (uint8_t *) &tmp, field->n_bytes); | |
1135 | mf_set_flow_value(field, &tmp, flow); | |
1136 | } | |
1137 | ||
ccbe50f8 BP |
1138 | /* Returns true if 'mf' has a zero value in 'flow', false if it is nonzero. |
1139 | * | |
1140 | * The caller is responsible for ensuring that 'flow' meets 'mf''s | |
1141 | * prerequisites. */ | |
1142 | bool | |
1143 | mf_is_zero(const struct mf_field *mf, const struct flow *flow) | |
1144 | { | |
1145 | union mf_value value; | |
1146 | ||
1147 | mf_get_value(mf, flow, &value); | |
53cb9c3e | 1148 | return is_all_zeros(&value, mf->n_bytes); |
ccbe50f8 BP |
1149 | } |
1150 | ||
81a76618 | 1151 | /* Makes 'match' wildcard field 'mf'. |
6a885fd0 | 1152 | * |
81a76618 | 1153 | * The caller is responsible for ensuring that 'match' meets 'mf''s |
6a885fd0 BP |
1154 | * prerequisites. */ |
1155 | void | |
81a76618 | 1156 | mf_set_wild(const struct mf_field *mf, struct match *match) |
6a885fd0 BP |
1157 | { |
1158 | switch (mf->id) { | |
a79f29f2 AZ |
1159 | case MFF_DP_HASH: |
1160 | match->flow.dp_hash = 0; | |
1161 | match->wc.masks.dp_hash = 0; | |
1162 | break; | |
1163 | case MFF_RECIRC_ID: | |
1164 | match->flow.recirc_id = 0; | |
1165 | match->wc.masks.recirc_id = 0; | |
1166 | break; | |
18080541 BP |
1167 | case MFF_CONJ_ID: |
1168 | match->flow.conj_id = 0; | |
1169 | match->wc.masks.conj_id = 0; | |
1170 | break; | |
6a885fd0 | 1171 | case MFF_TUN_ID: |
81a76618 | 1172 | match_set_tun_id_masked(match, htonll(0), htonll(0)); |
6a885fd0 | 1173 | break; |
4fe3445a PS |
1174 | case MFF_TUN_SRC: |
1175 | match_set_tun_src_masked(match, htonl(0), htonl(0)); | |
1176 | break; | |
1177 | case MFF_TUN_DST: | |
1178 | match_set_tun_dst_masked(match, htonl(0), htonl(0)); | |
1179 | break; | |
1180 | case MFF_TUN_FLAGS: | |
1181 | match_set_tun_flags_masked(match, 0, 0); | |
1182 | break; | |
1183 | case MFF_TUN_TOS: | |
1184 | match_set_tun_tos_masked(match, 0, 0); | |
1185 | break; | |
1186 | case MFF_TUN_TTL: | |
1187 | match_set_tun_ttl_masked(match, 0, 0); | |
1188 | break; | |
1189 | ||
969fc56c | 1190 | case MFF_METADATA: |
81a76618 | 1191 | match_set_metadata_masked(match, htonll(0), htonll(0)); |
801d2b2a | 1192 | break; |
6a885fd0 BP |
1193 | |
1194 | case MFF_IN_PORT: | |
72333065 | 1195 | case MFF_IN_PORT_OXM: |
4e022ec0 AW |
1196 | match->flow.in_port.ofp_port = 0; |
1197 | match->wc.masks.in_port.ofp_port = 0; | |
6a885fd0 | 1198 | break; |
c61f3870 BP |
1199 | case MFF_ACTSET_OUTPUT: |
1200 | match->flow.actset_output = 0; | |
1201 | match->wc.masks.actset_output = 0; | |
1202 | break; | |
6a885fd0 | 1203 | |
1b567fb9 AA |
1204 | case MFF_SKB_PRIORITY: |
1205 | match->flow.skb_priority = 0; | |
1206 | match->wc.masks.skb_priority = 0; | |
1207 | break; | |
1208 | ||
1362e248 JG |
1209 | case MFF_PKT_MARK: |
1210 | match->flow.pkt_mark = 0; | |
1211 | match->wc.masks.pkt_mark = 0; | |
1b567fb9 AA |
1212 | break; |
1213 | ||
0d7e2fe4 | 1214 | CASE_MFF_REGS: |
81a76618 | 1215 | match_set_reg_masked(match, mf->id - MFF_REG0, 0, 0); |
e9358af6 | 1216 | break; |
6a885fd0 | 1217 | |
79fe0f46 BP |
1218 | CASE_MFF_XREGS: |
1219 | match_set_xreg_masked(match, mf->id - MFF_XREG0, 0, 0); | |
1220 | break; | |
1221 | ||
6a885fd0 | 1222 | case MFF_ETH_SRC: |
81a76618 BP |
1223 | memset(match->flow.dl_src, 0, ETH_ADDR_LEN); |
1224 | memset(match->wc.masks.dl_src, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1225 | break; |
1226 | ||
1227 | case MFF_ETH_DST: | |
81a76618 BP |
1228 | memset(match->flow.dl_dst, 0, ETH_ADDR_LEN); |
1229 | memset(match->wc.masks.dl_dst, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1230 | break; |
1231 | ||
1232 | case MFF_ETH_TYPE: | |
81a76618 BP |
1233 | match->flow.dl_type = htons(0); |
1234 | match->wc.masks.dl_type = htons(0); | |
6a885fd0 BP |
1235 | break; |
1236 | ||
1237 | case MFF_VLAN_TCI: | |
81a76618 | 1238 | match_set_dl_tci_masked(match, htons(0), htons(0)); |
6a885fd0 BP |
1239 | break; |
1240 | ||
441c57a9 | 1241 | case MFF_DL_VLAN: |
cc34bc8c | 1242 | case MFF_VLAN_VID: |
81a76618 | 1243 | match_set_any_vid(match); |
6a885fd0 BP |
1244 | break; |
1245 | ||
441c57a9 | 1246 | case MFF_DL_VLAN_PCP: |
cc34bc8c | 1247 | case MFF_VLAN_PCP: |
81a76618 | 1248 | match_set_any_pcp(match); |
6a885fd0 BP |
1249 | break; |
1250 | ||
b02475c5 | 1251 | case MFF_MPLS_LABEL: |
8bfd0fda | 1252 | match_set_any_mpls_label(match, 0); |
b02475c5 SH |
1253 | break; |
1254 | ||
1255 | case MFF_MPLS_TC: | |
8bfd0fda | 1256 | match_set_any_mpls_tc(match, 0); |
b02475c5 SH |
1257 | break; |
1258 | ||
1259 | case MFF_MPLS_BOS: | |
8bfd0fda BP |
1260 | match_set_any_mpls_bos(match, 0); |
1261 | break; | |
b02475c5 | 1262 | |
6a885fd0 BP |
1263 | case MFF_IPV4_SRC: |
1264 | case MFF_ARP_SPA: | |
81a76618 | 1265 | match_set_nw_src_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1266 | break; |
1267 | ||
1268 | case MFF_IPV4_DST: | |
1269 | case MFF_ARP_TPA: | |
81a76618 | 1270 | match_set_nw_dst_masked(match, htonl(0), htonl(0)); |
6a885fd0 BP |
1271 | break; |
1272 | ||
1273 | case MFF_IPV6_SRC: | |
81a76618 BP |
1274 | memset(&match->wc.masks.ipv6_src, 0, sizeof match->wc.masks.ipv6_src); |
1275 | memset(&match->flow.ipv6_src, 0, sizeof match->flow.ipv6_src); | |
6a885fd0 BP |
1276 | break; |
1277 | ||
1278 | case MFF_IPV6_DST: | |
81a76618 BP |
1279 | memset(&match->wc.masks.ipv6_dst, 0, sizeof match->wc.masks.ipv6_dst); |
1280 | memset(&match->flow.ipv6_dst, 0, sizeof match->flow.ipv6_dst); | |
6a885fd0 BP |
1281 | break; |
1282 | ||
fa8223b7 | 1283 | case MFF_IPV6_LABEL: |
81a76618 BP |
1284 | match->wc.masks.ipv6_label = htonl(0); |
1285 | match->flow.ipv6_label = htonl(0); | |
fa8223b7 JP |
1286 | break; |
1287 | ||
6a885fd0 | 1288 | case MFF_IP_PROTO: |
81a76618 BP |
1289 | match->wc.masks.nw_proto = 0; |
1290 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1291 | break; |
1292 | ||
530180fd | 1293 | case MFF_IP_DSCP: |
1638b906 | 1294 | case MFF_IP_DSCP_SHIFTED: |
81a76618 BP |
1295 | match->wc.masks.nw_tos &= ~IP_DSCP_MASK; |
1296 | match->flow.nw_tos &= ~IP_DSCP_MASK; | |
7257b535 BP |
1297 | break; |
1298 | ||
530180fd | 1299 | case MFF_IP_ECN: |
81a76618 BP |
1300 | match->wc.masks.nw_tos &= ~IP_ECN_MASK; |
1301 | match->flow.nw_tos &= ~IP_ECN_MASK; | |
530180fd JP |
1302 | break; |
1303 | ||
a61680c6 | 1304 | case MFF_IP_TTL: |
81a76618 BP |
1305 | match->wc.masks.nw_ttl = 0; |
1306 | match->flow.nw_ttl = 0; | |
a61680c6 JP |
1307 | break; |
1308 | ||
7257b535 | 1309 | case MFF_IP_FRAG: |
81a76618 BP |
1310 | match->wc.masks.nw_frag |= FLOW_NW_FRAG_MASK; |
1311 | match->flow.nw_frag &= ~FLOW_NW_FRAG_MASK; | |
6a885fd0 BP |
1312 | break; |
1313 | ||
1314 | case MFF_ARP_OP: | |
81a76618 BP |
1315 | match->wc.masks.nw_proto = 0; |
1316 | match->flow.nw_proto = 0; | |
6a885fd0 BP |
1317 | break; |
1318 | ||
1319 | case MFF_ARP_SHA: | |
1320 | case MFF_ND_SLL: | |
81a76618 BP |
1321 | memset(match->flow.arp_sha, 0, ETH_ADDR_LEN); |
1322 | memset(match->wc.masks.arp_sha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1323 | break; |
1324 | ||
1325 | case MFF_ARP_THA: | |
1326 | case MFF_ND_TLL: | |
81a76618 BP |
1327 | memset(match->flow.arp_tha, 0, ETH_ADDR_LEN); |
1328 | memset(match->wc.masks.arp_tha, 0, ETH_ADDR_LEN); | |
6a885fd0 BP |
1329 | break; |
1330 | ||
1331 | case MFF_TCP_SRC: | |
1332 | case MFF_UDP_SRC: | |
0d56eaf2 | 1333 | case MFF_SCTP_SRC: |
268a95e0 BP |
1334 | case MFF_ICMPV4_TYPE: |
1335 | case MFF_ICMPV6_TYPE: | |
81a76618 BP |
1336 | match->wc.masks.tp_src = htons(0); |
1337 | match->flow.tp_src = htons(0); | |
6a885fd0 BP |
1338 | break; |
1339 | ||
1340 | case MFF_TCP_DST: | |
1341 | case MFF_UDP_DST: | |
0d56eaf2 | 1342 | case MFF_SCTP_DST: |
268a95e0 BP |
1343 | case MFF_ICMPV4_CODE: |
1344 | case MFF_ICMPV6_CODE: | |
81a76618 BP |
1345 | match->wc.masks.tp_dst = htons(0); |
1346 | match->flow.tp_dst = htons(0); | |
6a885fd0 BP |
1347 | break; |
1348 | ||
dc235f7f JR |
1349 | case MFF_TCP_FLAGS: |
1350 | match->wc.masks.tcp_flags = htons(0); | |
1351 | match->flow.tcp_flags = htons(0); | |
1352 | break; | |
1353 | ||
6a885fd0 | 1354 | case MFF_ND_TARGET: |
81a76618 BP |
1355 | memset(&match->wc.masks.nd_target, 0, |
1356 | sizeof match->wc.masks.nd_target); | |
1357 | memset(&match->flow.nd_target, 0, sizeof match->flow.nd_target); | |
6a885fd0 BP |
1358 | break; |
1359 | ||
1360 | case MFF_N_IDS: | |
1361 | default: | |
428b2edd | 1362 | OVS_NOT_REACHED(); |
6a885fd0 BP |
1363 | } |
1364 | } | |
1365 | ||
81a76618 | 1366 | /* Makes 'match' match field 'mf' with the specified 'value' and 'mask'. |
6a885fd0 BP |
1367 | * 'value' specifies a value to match and 'mask' specifies a wildcard pattern, |
1368 | * with a 1-bit indicating that the corresponding value bit must match and a | |
1369 | * 0-bit indicating a don't-care. | |
1370 | * | |
1371 | * If 'mask' is NULL or points to all-1-bits, then this call is equivalent to | |
81a76618 BP |
1372 | * mf_set_value(mf, value, match). If 'mask' points to all-0-bits, then this |
1373 | * call is equivalent to mf_set_wild(mf, match). | |
6a885fd0 BP |
1374 | * |
1375 | * 'mask' must be a valid mask for 'mf' (see mf_is_mask_valid()). The caller | |
81a76618 | 1376 | * is responsible for ensuring that 'match' meets 'mf''s prerequisites. */ |
db0b6c29 | 1377 | enum ofputil_protocol |
6a885fd0 BP |
1378 | mf_set(const struct mf_field *mf, |
1379 | const union mf_value *value, const union mf_value *mask, | |
81a76618 | 1380 | struct match *match) |
6a885fd0 | 1381 | { |
53cb9c3e | 1382 | if (!mask || is_all_ones(mask, mf->n_bytes)) { |
81a76618 | 1383 | mf_set_value(mf, value, match); |
a4ce8b25 | 1384 | return mf->usable_protocols_exact; |
53cb9c3e | 1385 | } else if (is_all_zeros(mask, mf->n_bytes)) { |
81a76618 | 1386 | mf_set_wild(mf, match); |
db0b6c29 | 1387 | return OFPUTIL_P_ANY; |
6a885fd0 BP |
1388 | } |
1389 | ||
1390 | switch (mf->id) { | |
a79f29f2 | 1391 | case MFF_RECIRC_ID: |
18080541 | 1392 | case MFF_CONJ_ID: |
6a885fd0 | 1393 | case MFF_IN_PORT: |
72333065 | 1394 | case MFF_IN_PORT_OXM: |
c61f3870 | 1395 | case MFF_ACTSET_OUTPUT: |
1b567fb9 | 1396 | case MFF_SKB_PRIORITY: |
6a885fd0 | 1397 | case MFF_ETH_TYPE: |
441c57a9 BP |
1398 | case MFF_DL_VLAN: |
1399 | case MFF_DL_VLAN_PCP: | |
cc34bc8c | 1400 | case MFF_VLAN_PCP: |
b02475c5 SH |
1401 | case MFF_MPLS_LABEL: |
1402 | case MFF_MPLS_TC: | |
1403 | case MFF_MPLS_BOS: | |
6a885fd0 | 1404 | case MFF_IP_PROTO: |
a61680c6 | 1405 | case MFF_IP_TTL: |
530180fd | 1406 | case MFF_IP_DSCP: |
1638b906 | 1407 | case MFF_IP_DSCP_SHIFTED: |
530180fd | 1408 | case MFF_IP_ECN: |
6a885fd0 | 1409 | case MFF_ARP_OP: |
268a95e0 BP |
1410 | case MFF_ICMPV4_TYPE: |
1411 | case MFF_ICMPV4_CODE: | |
1412 | case MFF_ICMPV6_TYPE: | |
1413 | case MFF_ICMPV6_CODE: | |
af69bf19 | 1414 | return OFPUTIL_P_NONE; |
6a885fd0 | 1415 | |
a79f29f2 AZ |
1416 | case MFF_DP_HASH: |
1417 | match_set_dp_hash_masked(match, ntohl(value->be32), ntohl(mask->be32)); | |
1418 | break; | |
6a885fd0 | 1419 | case MFF_TUN_ID: |
81a76618 | 1420 | match_set_tun_id_masked(match, value->be64, mask->be64); |
6a885fd0 | 1421 | break; |
4fe3445a PS |
1422 | case MFF_TUN_SRC: |
1423 | match_set_tun_src_masked(match, value->be32, mask->be32); | |
1424 | break; | |
1425 | case MFF_TUN_DST: | |
1426 | match_set_tun_dst_masked(match, value->be32, mask->be32); | |
1427 | break; | |
1428 | case MFF_TUN_FLAGS: | |
1429 | match_set_tun_flags_masked(match, ntohs(value->be16), ntohs(mask->be16)); | |
1430 | break; | |
1431 | case MFF_TUN_TTL: | |
1432 | match_set_tun_ttl_masked(match, value->u8, mask->u8); | |
1433 | break; | |
1434 | case MFF_TUN_TOS: | |
1435 | match_set_tun_tos_masked(match, value->u8, mask->u8); | |
1436 | break; | |
1437 | ||
969fc56c | 1438 | case MFF_METADATA: |
81a76618 | 1439 | match_set_metadata_masked(match, value->be64, mask->be64); |
969fc56c | 1440 | break; |
6a885fd0 | 1441 | |
0d7e2fe4 | 1442 | CASE_MFF_REGS: |
81a76618 BP |
1443 | match_set_reg_masked(match, mf->id - MFF_REG0, |
1444 | ntohl(value->be32), ntohl(mask->be32)); | |
6a885fd0 | 1445 | break; |
ac923e91 | 1446 | |
79fe0f46 BP |
1447 | CASE_MFF_XREGS: |
1448 | match_set_xreg_masked(match, mf->id - MFF_XREG0, | |
1449 | ntohll(value->be64), ntohll(mask->be64)); | |
1450 | break; | |
1451 | ||
ac923e91 JG |
1452 | case MFF_PKT_MARK: |
1453 | match_set_pkt_mark_masked(match, ntohl(value->be32), | |
1454 | ntohl(mask->be32)); | |
1455 | break; | |
6a885fd0 BP |
1456 | |
1457 | case MFF_ETH_DST: | |
81a76618 | 1458 | match_set_dl_dst_masked(match, value->mac, mask->mac); |
73c0ce34 JS |
1459 | break; |
1460 | ||
1461 | case MFF_ETH_SRC: | |
81a76618 | 1462 | match_set_dl_src_masked(match, value->mac, mask->mac); |
6a885fd0 BP |
1463 | break; |
1464 | ||
e878338b SH |
1465 | case MFF_ARP_SHA: |
1466 | case MFF_ND_SLL: | |
81a76618 | 1467 | match_set_arp_sha_masked(match, value->mac, mask->mac); |
e878338b SH |
1468 | break; |
1469 | ||
1470 | case MFF_ARP_THA: | |
1471 | case MFF_ND_TLL: | |
81a76618 | 1472 | match_set_arp_tha_masked(match, value->mac, mask->mac); |
e878338b SH |
1473 | break; |
1474 | ||
6a885fd0 | 1475 | case MFF_VLAN_TCI: |
81a76618 | 1476 | match_set_dl_tci_masked(match, value->be16, mask->be16); |
6a885fd0 BP |
1477 | break; |
1478 | ||
cc34bc8c | 1479 | case MFF_VLAN_VID: |
81a76618 | 1480 | match_set_vlan_vid_masked(match, value->be16, mask->be16); |
cc34bc8c BP |
1481 | break; |
1482 | ||
6a885fd0 | 1483 | case MFF_IPV4_SRC: |
81a76618 | 1484 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1485 | break; |
6a885fd0 BP |
1486 | |
1487 | case MFF_IPV4_DST: | |
81a76618 | 1488 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1489 | break; |
6a885fd0 BP |
1490 | |
1491 | case MFF_IPV6_SRC: | |
81a76618 | 1492 | match_set_ipv6_src_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1493 | break; |
1494 | ||
1495 | case MFF_IPV6_DST: | |
81a76618 | 1496 | match_set_ipv6_dst_masked(match, &value->ipv6, &mask->ipv6); |
6a885fd0 BP |
1497 | break; |
1498 | ||
32455024 SH |
1499 | case MFF_IPV6_LABEL: |
1500 | if ((mask->be32 & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK)) { | |
81a76618 | 1501 | mf_set_value(mf, value, match); |
32455024 | 1502 | } else { |
81a76618 | 1503 | match_set_ipv6_label_masked(match, value->be32, mask->be32); |
32455024 SH |
1504 | } |
1505 | break; | |
1506 | ||
47284b1f | 1507 | case MFF_ND_TARGET: |
81a76618 | 1508 | match_set_nd_target_masked(match, &value->ipv6, &mask->ipv6); |
47284b1f AA |
1509 | break; |
1510 | ||
7257b535 | 1511 | case MFF_IP_FRAG: |
81a76618 | 1512 | match_set_nw_frag_masked(match, value->u8, mask->u8); |
7257b535 BP |
1513 | break; |
1514 | ||
6a885fd0 | 1515 | case MFF_ARP_SPA: |
81a76618 | 1516 | match_set_nw_src_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1517 | break; |
6a885fd0 BP |
1518 | |
1519 | case MFF_ARP_TPA: | |
81a76618 | 1520 | match_set_nw_dst_masked(match, value->be32, mask->be32); |
a4ce8b25 | 1521 | break; |
6a885fd0 | 1522 | |
73f33563 BP |
1523 | case MFF_TCP_SRC: |
1524 | case MFF_UDP_SRC: | |
0d56eaf2 | 1525 | case MFF_SCTP_SRC: |
81a76618 | 1526 | match_set_tp_src_masked(match, value->be16, mask->be16); |
73f33563 BP |
1527 | break; |
1528 | ||
1529 | case MFF_TCP_DST: | |
1530 | case MFF_UDP_DST: | |
0d56eaf2 | 1531 | case MFF_SCTP_DST: |
81a76618 | 1532 | match_set_tp_dst_masked(match, value->be16, mask->be16); |
73f33563 BP |
1533 | break; |
1534 | ||
dc235f7f JR |
1535 | case MFF_TCP_FLAGS: |
1536 | match_set_tcp_flags_masked(match, value->be16, mask->be16); | |
1537 | break; | |
1538 | ||
6a885fd0 BP |
1539 | case MFF_N_IDS: |
1540 | default: | |
428b2edd | 1541 | OVS_NOT_REACHED(); |
6a885fd0 | 1542 | } |
db0b6c29 | 1543 | |
a4ce8b25 BP |
1544 | return ((mf->usable_protocols_bitwise == mf->usable_protocols_cidr |
1545 | || ip_is_cidr(mask->be32)) | |
1546 | ? mf->usable_protocols_cidr | |
1547 | : mf->usable_protocols_bitwise); | |
6a885fd0 BP |
1548 | } |
1549 | ||
816fd533 BP |
1550 | static enum ofperr |
1551 | mf_check__(const struct mf_subfield *sf, const struct flow *flow, | |
1552 | const char *type) | |
6a885fd0 | 1553 | { |
816fd533 BP |
1554 | if (!sf->field) { |
1555 | VLOG_WARN_RL(&rl, "unknown %s field", type); | |
9e404d1e | 1556 | return OFPERR_OFPBAC_BAD_SET_TYPE; |
816fd533 BP |
1557 | } else if (!sf->n_bits) { |
1558 | VLOG_WARN_RL(&rl, "zero bit %s field %s", type, sf->field->name); | |
9e404d1e | 1559 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1560 | } else if (sf->ofs >= sf->field->n_bits) { |
1561 | VLOG_WARN_RL(&rl, "bit offset %d exceeds %d-bit width of %s field %s", | |
1562 | sf->ofs, sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1563 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1564 | } else if (sf->ofs + sf->n_bits > sf->field->n_bits) { |
1565 | VLOG_WARN_RL(&rl, "bit offset %d and width %d exceeds %d-bit width " | |
1566 | "of %s field %s", sf->ofs, sf->n_bits, | |
1567 | sf->field->n_bits, type, sf->field->name); | |
9e404d1e | 1568 | return OFPERR_OFPBAC_BAD_SET_LEN; |
816fd533 BP |
1569 | } else if (flow && !mf_are_prereqs_ok(sf->field, flow)) { |
1570 | VLOG_WARN_RL(&rl, "%s field %s lacks correct prerequisites", | |
1571 | type, sf->field->name); | |
9e404d1e | 1572 | return OFPERR_OFPBAC_MATCH_INCONSISTENT; |
6a885fd0 | 1573 | } else { |
816fd533 BP |
1574 | return 0; |
1575 | } | |
816fd533 | 1576 | } |
6a885fd0 | 1577 | |
816fd533 BP |
1578 | /* Checks whether 'sf' is valid for reading a subfield out of 'flow'. Returns |
1579 | * 0 if so, otherwise an OpenFlow error code (e.g. as returned by | |
1580 | * ofp_mkerr()). */ | |
1581 | enum ofperr | |
1582 | mf_check_src(const struct mf_subfield *sf, const struct flow *flow) | |
1583 | { | |
1584 | return mf_check__(sf, flow, "source"); | |
1585 | } | |
6a885fd0 | 1586 | |
816fd533 BP |
1587 | /* Checks whether 'sf' is valid for writing a subfield into 'flow'. Returns 0 |
1588 | * if so, otherwise an OpenFlow error code (e.g. as returned by | |
1589 | * ofp_mkerr()). */ | |
1590 | enum ofperr | |
1591 | mf_check_dst(const struct mf_subfield *sf, const struct flow *flow) | |
1592 | { | |
1593 | int error = mf_check__(sf, flow, "destination"); | |
1594 | if (!error && !sf->field->writable) { | |
1595 | VLOG_WARN_RL(&rl, "destination field %s is not writable", | |
1596 | sf->field->name); | |
9e404d1e | 1597 | return OFPERR_OFPBAC_BAD_SET_ARGUMENT; |
6a885fd0 | 1598 | } |
816fd533 | 1599 | return error; |
6a885fd0 BP |
1600 | } |
1601 | ||
81a76618 | 1602 | /* Copies the value and wildcard bit pattern for 'mf' from 'match' into the |
6a885fd0 BP |
1603 | * 'value' and 'mask', respectively. */ |
1604 | void | |
81a76618 | 1605 | mf_get(const struct mf_field *mf, const struct match *match, |
6a885fd0 BP |
1606 | union mf_value *value, union mf_value *mask) |
1607 | { | |
81a76618 BP |
1608 | mf_get_value(mf, &match->flow, value); |
1609 | mf_get_mask(mf, &match->wc, mask); | |
6a885fd0 BP |
1610 | } |
1611 | ||
6a885fd0 BP |
1612 | static char * |
1613 | mf_from_integer_string(const struct mf_field *mf, const char *s, | |
1614 | uint8_t *valuep, uint8_t *maskp) | |
1615 | { | |
1616 | unsigned long long int integer, mask; | |
1617 | char *tail; | |
1618 | int i; | |
1619 | ||
1620 | errno = 0; | |
1621 | integer = strtoull(s, &tail, 0); | |
1622 | if (errno || (*tail != '\0' && *tail != '/')) { | |
1623 | goto syntax_error; | |
1624 | } | |
1625 | ||
1626 | if (*tail == '/') { | |
1627 | mask = strtoull(tail + 1, &tail, 0); | |
1628 | if (errno || *tail != '\0') { | |
1629 | goto syntax_error; | |
1630 | } | |
1631 | } else { | |
1632 | mask = ULLONG_MAX; | |
1633 | } | |
1634 | ||
1635 | for (i = mf->n_bytes - 1; i >= 0; i--) { | |
1636 | valuep[i] = integer; | |
1637 | maskp[i] = mask; | |
1638 | integer >>= 8; | |
1639 | mask >>= 8; | |
1640 | } | |
1641 | if (integer) { | |
1642 | return xasprintf("%s: value too large for %u-byte field %s", | |
1643 | s, mf->n_bytes, mf->name); | |
1644 | } | |
1645 | return NULL; | |
1646 | ||
1647 | syntax_error: | |
1648 | return xasprintf("%s: bad syntax for %s", s, mf->name); | |
1649 | } | |
1650 | ||
1651 | static char * | |
1652 | mf_from_ethernet_string(const struct mf_field *mf, const char *s, | |
1653 | uint8_t mac[ETH_ADDR_LEN], | |
1654 | uint8_t mask[ETH_ADDR_LEN]) | |
1655 | { | |
279fb135 | 1656 | int n; |
6a885fd0 | 1657 | |
279fb135 | 1658 | ovs_assert(mf->n_bytes == ETH_ADDR_LEN); |
6a885fd0 | 1659 | |
279fb135 | 1660 | n = -1; |
c2c28dfd | 1661 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n", ETH_ADDR_SCAN_ARGS(mac), &n) |
279fb135 | 1662 | && n == strlen(s)) { |
6a885fd0 BP |
1663 | memset(mask, 0xff, ETH_ADDR_LEN); |
1664 | return NULL; | |
279fb135 | 1665 | } |
6a885fd0 | 1666 | |
279fb135 | 1667 | n = -1; |
c2c28dfd BP |
1668 | if (ovs_scan(s, ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT"%n", |
1669 | ETH_ADDR_SCAN_ARGS(mac), ETH_ADDR_SCAN_ARGS(mask), &n) | |
279fb135 BP |
1670 | && n == strlen(s)) { |
1671 | return NULL; | |
6a885fd0 | 1672 | } |
279fb135 BP |
1673 | |
1674 | return xasprintf("%s: invalid Ethernet address", s); | |
6a885fd0 BP |
1675 | } |
1676 | ||
1677 | static char * | |
1678 | mf_from_ipv4_string(const struct mf_field *mf, const char *s, | |
1679 | ovs_be32 *ip, ovs_be32 *mask) | |
1680 | { | |
1681 | int prefix; | |
1682 | ||
cb22974d | 1683 | ovs_assert(mf->n_bytes == sizeof *ip); |
6a885fd0 | 1684 | |
c2c28dfd BP |
1685 | if (ovs_scan(s, IP_SCAN_FMT"/"IP_SCAN_FMT, |
1686 | IP_SCAN_ARGS(ip), IP_SCAN_ARGS(mask))) { | |
6a885fd0 | 1687 | /* OK. */ |
c2c28dfd | 1688 | } else if (ovs_scan(s, IP_SCAN_FMT"/%d", IP_SCAN_ARGS(ip), &prefix)) { |
6a885fd0 | 1689 | if (prefix <= 0 || prefix > 32) { |
86f35fb5 | 1690 | return xasprintf("%s: network prefix bits not between 0 and " |
6a885fd0 | 1691 | "32", s); |
6a885fd0 | 1692 | } |
86f35fb5 | 1693 | *mask = be32_prefix_mask(prefix); |
c2c28dfd | 1694 | } else if (ovs_scan(s, IP_SCAN_FMT, IP_SCAN_ARGS(ip))) { |
b8266395 | 1695 | *mask = OVS_BE32_MAX; |
6a885fd0 BP |
1696 | } else { |
1697 | return xasprintf("%s: invalid IP address", s); | |
1698 | } | |
1699 | return NULL; | |
1700 | } | |
1701 | ||
1702 | static char * | |
1703 | mf_from_ipv6_string(const struct mf_field *mf, const char *s, | |
1704 | struct in6_addr *value, struct in6_addr *mask) | |
1705 | { | |
1706 | char *str = xstrdup(s); | |
1707 | char *save_ptr = NULL; | |
1708 | const char *name, *netmask; | |
1709 | int retval; | |
1710 | ||
cb22974d | 1711 | ovs_assert(mf->n_bytes == sizeof *value); |
6a885fd0 BP |
1712 | |
1713 | name = strtok_r(str, "/", &save_ptr); | |
1714 | retval = name ? lookup_ipv6(name, value) : EINVAL; | |
1715 | if (retval) { | |
1716 | char *err; | |
1717 | ||
1718 | err = xasprintf("%s: could not convert to IPv6 address", str); | |
1719 | free(str); | |
1720 | ||
1721 | return err; | |
1722 | } | |
1723 | ||
1724 | netmask = strtok_r(NULL, "/", &save_ptr); | |
1725 | if (netmask) { | |
ff0b06ee BP |
1726 | if (inet_pton(AF_INET6, netmask, mask) != 1) { |
1727 | int prefix = atoi(netmask); | |
1728 | if (prefix <= 0 || prefix > 128) { | |
1729 | free(str); | |
1730 | return xasprintf("%s: prefix bits not between 1 and 128", s); | |
1731 | } else { | |
1732 | *mask = ipv6_create_mask(prefix); | |
1733 | } | |
6a885fd0 BP |
1734 | } |
1735 | } else { | |
1736 | *mask = in6addr_exact; | |
1737 | } | |
1738 | free(str); | |
1739 | ||
1740 | return NULL; | |
1741 | } | |
1742 | ||
1743 | static char * | |
1744 | mf_from_ofp_port_string(const struct mf_field *mf, const char *s, | |
1745 | ovs_be16 *valuep, ovs_be16 *maskp) | |
1746 | { | |
4e022ec0 | 1747 | ofp_port_t port; |
6a885fd0 | 1748 | |
cb22974d | 1749 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
33ab38d9 JR |
1750 | |
1751 | if (ofputil_port_from_string(s, &port)) { | |
4e022ec0 | 1752 | *valuep = htons(ofp_to_u16(port)); |
b8266395 | 1753 | *maskp = OVS_BE16_MAX; |
6a885fd0 | 1754 | return NULL; |
6a885fd0 | 1755 | } |
33ab38d9 | 1756 | return xasprintf("%s: port value out of range for %s", s, mf->name); |
6a885fd0 BP |
1757 | } |
1758 | ||
72333065 JR |
1759 | static char * |
1760 | mf_from_ofp_port_string32(const struct mf_field *mf, const char *s, | |
1761 | ovs_be32 *valuep, ovs_be32 *maskp) | |
1762 | { | |
4e022ec0 | 1763 | ofp_port_t port; |
72333065 JR |
1764 | |
1765 | ovs_assert(mf->n_bytes == sizeof(ovs_be32)); | |
1766 | if (ofputil_port_from_string(s, &port)) { | |
1767 | *valuep = ofputil_port_to_ofp11(port); | |
b8266395 | 1768 | *maskp = OVS_BE32_MAX; |
72333065 JR |
1769 | return NULL; |
1770 | } | |
1771 | return xasprintf("%s: port value out of range for %s", s, mf->name); | |
1772 | } | |
1773 | ||
7257b535 BP |
1774 | struct frag_handling { |
1775 | const char *name; | |
1776 | uint8_t mask; | |
1777 | uint8_t value; | |
1778 | }; | |
1779 | ||
1780 | static const struct frag_handling all_frags[] = { | |
eadef313 JP |
1781 | #define A FLOW_NW_FRAG_ANY |
1782 | #define L FLOW_NW_FRAG_LATER | |
7257b535 BP |
1783 | /* name mask value */ |
1784 | ||
1785 | { "no", A|L, 0 }, | |
1786 | { "first", A|L, A }, | |
1787 | { "later", A|L, A|L }, | |
1788 | ||
1789 | { "no", A, 0 }, | |
1790 | { "yes", A, A }, | |
1791 | ||
1792 | { "not_later", L, 0 }, | |
1793 | { "later", L, L }, | |
1794 | #undef A | |
1795 | #undef L | |
1796 | }; | |
1797 | ||
1798 | static char * | |
1799 | mf_from_frag_string(const char *s, uint8_t *valuep, uint8_t *maskp) | |
1800 | { | |
1801 | const struct frag_handling *h; | |
1802 | ||
1803 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
1804 | if (!strcasecmp(s, h->name)) { | |
1805 | /* We force the upper bits of the mask on to make mf_parse_value() | |
1806 | * happy (otherwise it will never think it's an exact match.) */ | |
eadef313 | 1807 | *maskp = h->mask | ~FLOW_NW_FRAG_MASK; |
7257b535 BP |
1808 | *valuep = h->value; |
1809 | return NULL; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | return xasprintf("%s: unknown fragment type (valid types are \"no\", " | |
1814 | "\"yes\", \"first\", \"later\", \"not_first\"", s); | |
1815 | } | |
1816 | ||
4fe3445a PS |
1817 | static int |
1818 | parse_flow_tun_flags(const char *s_, const char *(*bit_to_string)(uint32_t), | |
1819 | ovs_be16 *res) | |
1820 | { | |
1821 | uint32_t result = 0; | |
1822 | char *save_ptr = NULL; | |
1823 | char *name; | |
1824 | int rc = 0; | |
1825 | char *s = xstrdup(s_); | |
1826 | ||
1827 | for (name = strtok_r((char *)s, " |", &save_ptr); name; | |
1828 | name = strtok_r(NULL, " |", &save_ptr)) { | |
1829 | int name_len; | |
1830 | unsigned long long int flags; | |
1831 | uint32_t bit; | |
4fe3445a | 1832 | |
c2c28dfd | 1833 | if (ovs_scan(name, "%lli", &flags)) { |
4fe3445a PS |
1834 | result |= flags; |
1835 | continue; | |
1836 | } | |
1837 | name_len = strlen(name); | |
1838 | for (bit = 1; bit; bit <<= 1) { | |
1839 | const char *fname = bit_to_string(bit); | |
1840 | size_t len; | |
1841 | ||
1842 | if (!fname) { | |
1843 | continue; | |
1844 | } | |
1845 | ||
1846 | len = strlen(fname); | |
1847 | if (len != name_len) { | |
1848 | continue; | |
1849 | } | |
1850 | if (!strncmp(name, fname, len)) { | |
1851 | result |= bit; | |
1852 | break; | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | if (!bit) { | |
1857 | rc = -ENOENT; | |
1858 | goto out; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | *res = htons(result); | |
1863 | out: | |
1864 | free(s); | |
1865 | return rc; | |
1866 | } | |
1867 | ||
1868 | static char * | |
b0aa8146 | 1869 | mf_from_tun_flags_string(const char *s, ovs_be16 *valuep, ovs_be16 *maskp) |
4fe3445a PS |
1870 | { |
1871 | if (!parse_flow_tun_flags(s, flow_tun_flag_to_string, valuep)) { | |
b8266395 | 1872 | *maskp = OVS_BE16_MAX; |
4fe3445a PS |
1873 | return NULL; |
1874 | } | |
1875 | ||
1876 | return xasprintf("%s: unknown tunnel flags (valid flags are \"df\", " | |
c49a5e33 | 1877 | "\"csum\", \"key\")", s); |
4fe3445a PS |
1878 | } |
1879 | ||
61bf6666 JR |
1880 | static char * |
1881 | mf_from_tcp_flags_string(const char *s, ovs_be16 *flagsp, ovs_be16 *maskp) | |
1882 | { | |
1883 | uint16_t flags = 0; | |
1884 | uint16_t mask = 0; | |
1885 | uint16_t bit; | |
1886 | int n; | |
1887 | ||
1888 | if (ovs_scan(s, "%"SCNi16"/%"SCNi16"%n", &flags, &mask, &n) && !s[n]) { | |
1889 | *flagsp = htons(flags); | |
1890 | *maskp = htons(mask); | |
1891 | return NULL; | |
1892 | } | |
1893 | if (ovs_scan(s, "%"SCNi16"%n", &flags, &n) && !s[n]) { | |
1894 | *flagsp = htons(flags); | |
1895 | *maskp = OVS_BE16_MAX; | |
1896 | return NULL; | |
1897 | } | |
1898 | ||
1899 | while (*s != '\0') { | |
1900 | bool set; | |
1901 | int name_len; | |
1902 | ||
1903 | switch (*s) { | |
1904 | case '+': | |
1905 | set = true; | |
1906 | break; | |
1907 | case '-': | |
1908 | set = false; | |
1909 | break; | |
1910 | default: | |
1911 | return xasprintf("%s: TCP flag must be preceded by '+' (for SET) " | |
1912 | "or '-' (NOT SET)", s); | |
1913 | } | |
1914 | s++; | |
1915 | ||
1916 | name_len = strcspn(s,"+-"); | |
1917 | ||
1918 | for (bit = 1; bit; bit <<= 1) { | |
1919 | const char *fname = packet_tcp_flag_to_string(bit); | |
1920 | size_t len; | |
1921 | ||
1922 | if (!fname) { | |
1923 | continue; | |
1924 | } | |
1925 | ||
1926 | len = strlen(fname); | |
1927 | if (len != name_len) { | |
1928 | continue; | |
1929 | } | |
1930 | if (!strncmp(s, fname, len)) { | |
1931 | if (mask & bit) { | |
1932 | return xasprintf("%s: Each TCP flag can be specified only " | |
1933 | "once", s); | |
1934 | } | |
1935 | if (set) { | |
1936 | flags |= bit; | |
1937 | } | |
1938 | mask |= bit; | |
1939 | break; | |
1940 | } | |
1941 | } | |
1942 | ||
1943 | if (!bit) { | |
1944 | return xasprintf("%s: unknown TCP flag(s)", s); | |
1945 | } | |
1946 | s += name_len; | |
1947 | } | |
1948 | ||
1949 | *flagsp = htons(flags); | |
1950 | *maskp = htons(mask); | |
1951 | return NULL; | |
1952 | } | |
1953 | ||
1954 | ||
6a885fd0 BP |
1955 | /* Parses 's', a string value for field 'mf', into 'value' and 'mask'. Returns |
1956 | * NULL if successful, otherwise a malloc()'d string describing the error. */ | |
1957 | char * | |
1958 | mf_parse(const struct mf_field *mf, const char *s, | |
1959 | union mf_value *value, union mf_value *mask) | |
1960 | { | |
3634dff8 BP |
1961 | char *error; |
1962 | ||
bedde04c | 1963 | if (!strcmp(s, "*")) { |
6a885fd0 BP |
1964 | memset(value, 0, mf->n_bytes); |
1965 | memset(mask, 0, mf->n_bytes); | |
1966 | return NULL; | |
1967 | } | |
1968 | ||
1969 | switch (mf->string) { | |
1970 | case MFS_DECIMAL: | |
1971 | case MFS_HEXADECIMAL: | |
3634dff8 BP |
1972 | error = mf_from_integer_string(mf, s, |
1973 | (uint8_t *) value, (uint8_t *) mask); | |
1974 | break; | |
6a885fd0 BP |
1975 | |
1976 | case MFS_ETHERNET: | |
3634dff8 BP |
1977 | error = mf_from_ethernet_string(mf, s, value->mac, mask->mac); |
1978 | break; | |
6a885fd0 BP |
1979 | |
1980 | case MFS_IPV4: | |
3634dff8 BP |
1981 | error = mf_from_ipv4_string(mf, s, &value->be32, &mask->be32); |
1982 | break; | |
6a885fd0 BP |
1983 | |
1984 | case MFS_IPV6: | |
3634dff8 BP |
1985 | error = mf_from_ipv6_string(mf, s, &value->ipv6, &mask->ipv6); |
1986 | break; | |
6a885fd0 BP |
1987 | |
1988 | case MFS_OFP_PORT: | |
3634dff8 BP |
1989 | error = mf_from_ofp_port_string(mf, s, &value->be16, &mask->be16); |
1990 | break; | |
7257b535 | 1991 | |
72333065 | 1992 | case MFS_OFP_PORT_OXM: |
3634dff8 BP |
1993 | error = mf_from_ofp_port_string32(mf, s, &value->be32, &mask->be32); |
1994 | break; | |
72333065 | 1995 | |
7257b535 | 1996 | case MFS_FRAG: |
3634dff8 BP |
1997 | error = mf_from_frag_string(s, &value->u8, &mask->u8); |
1998 | break; | |
4fe3445a PS |
1999 | |
2000 | case MFS_TNL_FLAGS: | |
cb22974d | 2001 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); |
3634dff8 BP |
2002 | error = mf_from_tun_flags_string(s, &value->be16, &mask->be16); |
2003 | break; | |
2004 | ||
61bf6666 JR |
2005 | case MFS_TCP_FLAGS: |
2006 | ovs_assert(mf->n_bytes == sizeof(ovs_be16)); | |
2007 | error = mf_from_tcp_flags_string(s, &value->be16, &mask->be16); | |
2008 | break; | |
2009 | ||
3634dff8 | 2010 | default: |
428b2edd | 2011 | OVS_NOT_REACHED(); |
6a885fd0 | 2012 | } |
3634dff8 BP |
2013 | |
2014 | if (!error && !mf_is_mask_valid(mf, mask)) { | |
2015 | error = xasprintf("%s: invalid mask for field %s", s, mf->name); | |
2016 | } | |
2017 | return error; | |
6a885fd0 BP |
2018 | } |
2019 | ||
2020 | /* Parses 's', a string value for field 'mf', into 'value'. Returns NULL if | |
2021 | * successful, otherwise a malloc()'d string describing the error. */ | |
2022 | char * | |
2023 | mf_parse_value(const struct mf_field *mf, const char *s, union mf_value *value) | |
2024 | { | |
2025 | union mf_value mask; | |
2026 | char *error; | |
2027 | ||
2028 | error = mf_parse(mf, s, value, &mask); | |
2029 | if (error) { | |
2030 | return error; | |
2031 | } | |
2032 | ||
2033 | if (!is_all_ones((const uint8_t *) &mask, mf->n_bytes)) { | |
2034 | return xasprintf("%s: wildcards not allowed here", s); | |
2035 | } | |
2036 | return NULL; | |
2037 | } | |
2038 | ||
2039 | static void | |
2040 | mf_format_integer_string(const struct mf_field *mf, const uint8_t *valuep, | |
2041 | const uint8_t *maskp, struct ds *s) | |
2042 | { | |
2043 | unsigned long long int integer; | |
2044 | int i; | |
2045 | ||
cb22974d | 2046 | ovs_assert(mf->n_bytes <= 8); |
6a885fd0 BP |
2047 | |
2048 | integer = 0; | |
2049 | for (i = 0; i < mf->n_bytes; i++) { | |
2050 | integer = (integer << 8) | valuep[i]; | |
2051 | } | |
2052 | if (mf->string == MFS_HEXADECIMAL) { | |
2053 | ds_put_format(s, "%#llx", integer); | |
2054 | } else { | |
2055 | ds_put_format(s, "%lld", integer); | |
2056 | } | |
2057 | ||
2058 | if (maskp) { | |
2059 | unsigned long long int mask; | |
2060 | ||
2061 | mask = 0; | |
2062 | for (i = 0; i < mf->n_bytes; i++) { | |
2063 | mask = (mask << 8) | maskp[i]; | |
2064 | } | |
2065 | ||
2066 | /* I guess we could write the mask in decimal for MFS_DECIMAL but I'm | |
2067 | * not sure that that a bit-mask written in decimal is ever easier to | |
2068 | * understand than the same bit-mask written in hexadecimal. */ | |
2069 | ds_put_format(s, "/%#llx", mask); | |
2070 | } | |
2071 | } | |
2072 | ||
7257b535 | 2073 | static void |
8f75dea3 | 2074 | mf_format_frag_string(uint8_t value, uint8_t mask, struct ds *s) |
7257b535 BP |
2075 | { |
2076 | const struct frag_handling *h; | |
7257b535 | 2077 | |
eadef313 | 2078 | mask &= FLOW_NW_FRAG_MASK; |
8f75dea3 | 2079 | value &= mask; |
7257b535 BP |
2080 | |
2081 | for (h = all_frags; h < &all_frags[ARRAY_SIZE(all_frags)]; h++) { | |
2082 | if (value == h->value && mask == h->mask) { | |
2083 | ds_put_cstr(s, h->name); | |
2084 | return; | |
2085 | } | |
2086 | } | |
2087 | ds_put_cstr(s, "<error>"); | |
2088 | } | |
2089 | ||
4fe3445a PS |
2090 | static void |
2091 | mf_format_tnl_flags_string(const ovs_be16 *valuep, struct ds *s) | |
2092 | { | |
2093 | format_flags(s, flow_tun_flag_to_string, ntohs(*valuep), '|'); | |
2094 | } | |
2095 | ||
61bf6666 JR |
2096 | static void |
2097 | mf_format_tcp_flags_string(ovs_be16 value, ovs_be16 mask, struct ds *s) | |
2098 | { | |
2099 | format_flags_masked(s, NULL, packet_tcp_flag_to_string, ntohs(value), | |
2100 | TCP_FLAGS(mask)); | |
2101 | } | |
2102 | ||
6a885fd0 BP |
2103 | /* Appends to 's' a string representation of field 'mf' whose value is in |
2104 | * 'value' and 'mask'. 'mask' may be NULL to indicate an exact match. */ | |
2105 | void | |
2106 | mf_format(const struct mf_field *mf, | |
2107 | const union mf_value *value, const union mf_value *mask, | |
2108 | struct ds *s) | |
2109 | { | |
2110 | if (mask) { | |
53cb9c3e | 2111 | if (is_all_zeros(mask, mf->n_bytes)) { |
6a885fd0 BP |
2112 | ds_put_cstr(s, "ANY"); |
2113 | return; | |
53cb9c3e | 2114 | } else if (is_all_ones(mask, mf->n_bytes)) { |
6a885fd0 BP |
2115 | mask = NULL; |
2116 | } | |
2117 | } | |
2118 | ||
2119 | switch (mf->string) { | |
72333065 JR |
2120 | case MFS_OFP_PORT_OXM: |
2121 | if (!mask) { | |
4e022ec0 | 2122 | ofp_port_t port; |
bc146369 | 2123 | ofputil_port_from_ofp11(value->be32, &port); |
72333065 JR |
2124 | ofputil_format_port(port, s); |
2125 | break; | |
2126 | } | |
2127 | /* fall through */ | |
6a885fd0 BP |
2128 | case MFS_OFP_PORT: |
2129 | if (!mask) { | |
4e022ec0 | 2130 | ofputil_format_port(u16_to_ofp(ntohs(value->be16)), s); |
6a885fd0 BP |
2131 | break; |
2132 | } | |
2133 | /* fall through */ | |
2134 | case MFS_DECIMAL: | |
2135 | case MFS_HEXADECIMAL: | |
2136 | mf_format_integer_string(mf, (uint8_t *) value, (uint8_t *) mask, s); | |
2137 | break; | |
2138 | ||
2139 | case MFS_ETHERNET: | |
3b4d8ad3 | 2140 | eth_format_masked(value->mac, mask->mac, s); |
6a885fd0 BP |
2141 | break; |
2142 | ||
2143 | case MFS_IPV4: | |
b8266395 | 2144 | ip_format_masked(value->be32, mask ? mask->be32 : OVS_BE32_MAX, s); |
6a885fd0 BP |
2145 | break; |
2146 | ||
2147 | case MFS_IPV6: | |
2148 | print_ipv6_masked(s, &value->ipv6, mask ? &mask->ipv6 : NULL); | |
2149 | break; | |
2150 | ||
7257b535 | 2151 | case MFS_FRAG: |
8f75dea3 | 2152 | mf_format_frag_string(value->u8, mask ? mask->u8 : UINT8_MAX, s); |
7257b535 BP |
2153 | break; |
2154 | ||
4fe3445a PS |
2155 | case MFS_TNL_FLAGS: |
2156 | mf_format_tnl_flags_string(&value->be16, s); | |
2157 | break; | |
2158 | ||
61bf6666 JR |
2159 | case MFS_TCP_FLAGS: |
2160 | mf_format_tcp_flags_string(value->be16, | |
2161 | mask ? mask->be16 : OVS_BE16_MAX, s); | |
2162 | break; | |
2163 | ||
6a885fd0 | 2164 | default: |
428b2edd | 2165 | OVS_NOT_REACHED(); |
6a885fd0 BP |
2166 | } |
2167 | } | |
816fd533 | 2168 | \f |
9bab681f IY |
2169 | /* Makes subfield 'sf' within 'flow' exactly match the 'sf->n_bits' |
2170 | * least-significant bits in 'x'. | |
2171 | */ | |
2172 | void | |
2173 | mf_write_subfield_flow(const struct mf_subfield *sf, | |
2174 | const union mf_subvalue *x, struct flow *flow) | |
2175 | { | |
2176 | const struct mf_field *field = sf->field; | |
2177 | union mf_value value; | |
2178 | ||
2179 | mf_get_value(field, flow, &value); | |
158edc8d | 2180 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, |
9bab681f IY |
2181 | sf->ofs, sf->n_bits); |
2182 | mf_set_flow_value(field, &value, flow); | |
2183 | } | |
2184 | ||
81a76618 | 2185 | /* Makes subfield 'sf' within 'match' exactly match the 'sf->n_bits' |
1b35df45 | 2186 | * least-significant bits in 'x'. |
615660a9 | 2187 | */ |
1b35df45 BP |
2188 | void |
2189 | mf_write_subfield(const struct mf_subfield *sf, const union mf_subvalue *x, | |
81a76618 | 2190 | struct match *match) |
1b35df45 BP |
2191 | { |
2192 | const struct mf_field *field = sf->field; | |
2193 | union mf_value value, mask; | |
2194 | ||
81a76618 | 2195 | mf_get(field, match, &value, &mask); |
1b35df45 BP |
2196 | bitwise_copy(x, sizeof *x, 0, &value, field->n_bytes, sf->ofs, sf->n_bits); |
2197 | bitwise_one ( &mask, field->n_bytes, sf->ofs, sf->n_bits); | |
81a76618 | 2198 | mf_set(field, &value, &mask, match); |
1b35df45 BP |
2199 | } |
2200 | ||
1b35df45 BP |
2201 | /* Initializes 'x' to the value of 'sf' within 'flow'. 'sf' must be valid for |
2202 | * reading 'flow', e.g. as checked by mf_check_src(). */ | |
2203 | void | |
2204 | mf_read_subfield(const struct mf_subfield *sf, const struct flow *flow, | |
2205 | union mf_subvalue *x) | |
2206 | { | |
2207 | union mf_value value; | |
2208 | ||
2209 | mf_get_value(sf->field, flow, &value); | |
2210 | ||
2211 | memset(x, 0, sizeof *x); | |
2212 | bitwise_copy(&value, sf->field->n_bytes, sf->ofs, | |
2213 | x, sizeof *x, 0, | |
2214 | sf->n_bits); | |
2215 | } | |
2216 | ||
816fd533 BP |
2217 | /* Returns the value of 'sf' within 'flow'. 'sf' must be valid for reading |
2218 | * 'flow', e.g. as checked by mf_check_src() and sf->n_bits must be 64 or | |
2219 | * less. */ | |
2220 | uint64_t | |
2221 | mf_get_subfield(const struct mf_subfield *sf, const struct flow *flow) | |
2222 | { | |
2223 | union mf_value value; | |
2224 | ||
2225 | mf_get_value(sf->field, flow, &value); | |
2226 | return bitwise_get(&value, sf->field->n_bytes, sf->ofs, sf->n_bits); | |
2227 | } | |
2228 | ||
9bab681f IY |
2229 | void |
2230 | mf_format_subvalue(const union mf_subvalue *subvalue, struct ds *s) | |
2231 | { | |
2232 | int i; | |
2233 | ||
2234 | for (i = 0; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2235 | if (subvalue->u8[i]) { | |
2236 | ds_put_format(s, "0x%"PRIx8, subvalue->u8[i]); | |
2237 | for (i++; i < ARRAY_SIZE(subvalue->u8); i++) { | |
2238 | ds_put_format(s, "%02"PRIx8, subvalue->u8[i]); | |
2239 | } | |
2240 | return; | |
2241 | } | |
2242 | } | |
2243 | ds_put_char(s, '0'); | |
2244 | } |