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