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odp-util: Introduce odp_flow_key_from_mask().
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1 /*
2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
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 #include <arpa/inet.h>
19 #include "odp-util.h"
20 #include <errno.h>
21 #include <inttypes.h>
22 #include <math.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include "byte-order.h"
28 #include "coverage.h"
29 #include "dynamic-string.h"
30 #include "flow.h"
31 #include "netlink.h"
32 #include "ofpbuf.h"
33 #include "packets.h"
34 #include "simap.h"
35 #include "timeval.h"
36 #include "util.h"
37 #include "vlog.h"
38
39 VLOG_DEFINE_THIS_MODULE(odp_util);
40
41 /* The interface between userspace and kernel uses an "OVS_*" prefix.
42 * Since this is fairly non-specific for the OVS userspace components,
43 * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
44 * interactions with the datapath.
45 */
46
47 /* The set of characters that may separate one action or one key attribute
48 * from another. */
49 static const char *delimiters = ", \t\r\n";
50
51 static int parse_odp_key_mask_attr(const char *, const struct simap *port_names,
52 struct ofpbuf *, struct ofpbuf *);
53 static void format_odp_key_attr(const struct nlattr *a,
54 const struct nlattr *ma, struct ds *ds);
55
56 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
57 * 'type':
58 *
59 * - For an action whose argument has a fixed length, returned that
60 * nonnegative length in bytes.
61 *
62 * - For an action with a variable-length argument, returns -2.
63 *
64 * - For an invalid 'type', returns -1. */
65 static int
66 odp_action_len(uint16_t type)
67 {
68 if (type > OVS_ACTION_ATTR_MAX) {
69 return -1;
70 }
71
72 switch ((enum ovs_action_attr) type) {
73 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
74 case OVS_ACTION_ATTR_USERSPACE: return -2;
75 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
76 case OVS_ACTION_ATTR_POP_VLAN: return 0;
77 case OVS_ACTION_ATTR_PUSH_MPLS: return sizeof(struct ovs_action_push_mpls);
78 case OVS_ACTION_ATTR_POP_MPLS: return sizeof(ovs_be16);
79 case OVS_ACTION_ATTR_SET: return -2;
80 case OVS_ACTION_ATTR_SAMPLE: return -2;
81
82 case OVS_ACTION_ATTR_UNSPEC:
83 case __OVS_ACTION_ATTR_MAX:
84 return -1;
85 }
86
87 return -1;
88 }
89
90 /* Returns a string form of 'attr'. The return value is either a statically
91 * allocated constant string or the 'bufsize'-byte buffer 'namebuf'. 'bufsize'
92 * should be at least OVS_KEY_ATTR_BUFSIZE. */
93 enum { OVS_KEY_ATTR_BUFSIZE = 3 + INT_STRLEN(unsigned int) + 1 };
94 static const char *
95 ovs_key_attr_to_string(enum ovs_key_attr attr, char *namebuf, size_t bufsize)
96 {
97 switch (attr) {
98 case OVS_KEY_ATTR_UNSPEC: return "unspec";
99 case OVS_KEY_ATTR_ENCAP: return "encap";
100 case OVS_KEY_ATTR_PRIORITY: return "skb_priority";
101 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
102 case OVS_KEY_ATTR_TUNNEL: return "tunnel";
103 case OVS_KEY_ATTR_IN_PORT: return "in_port";
104 case OVS_KEY_ATTR_ETHERNET: return "eth";
105 case OVS_KEY_ATTR_VLAN: return "vlan";
106 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
107 case OVS_KEY_ATTR_IPV4: return "ipv4";
108 case OVS_KEY_ATTR_IPV6: return "ipv6";
109 case OVS_KEY_ATTR_TCP: return "tcp";
110 case OVS_KEY_ATTR_UDP: return "udp";
111 case OVS_KEY_ATTR_ICMP: return "icmp";
112 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
113 case OVS_KEY_ATTR_ARP: return "arp";
114 case OVS_KEY_ATTR_ND: return "nd";
115 case OVS_KEY_ATTR_MPLS: return "mpls";
116
117 case __OVS_KEY_ATTR_MAX:
118 default:
119 snprintf(namebuf, bufsize, "key%u", (unsigned int) attr);
120 return namebuf;
121 }
122 }
123
124 static void
125 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
126 {
127 size_t len = nl_attr_get_size(a);
128
129 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
130 if (len) {
131 const uint8_t *unspec;
132 unsigned int i;
133
134 unspec = nl_attr_get(a);
135 for (i = 0; i < len; i++) {
136 ds_put_char(ds, i ? ' ': '(');
137 ds_put_format(ds, "%02x", unspec[i]);
138 }
139 ds_put_char(ds, ')');
140 }
141 }
142
143 static void
144 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
145 {
146 static const struct nl_policy ovs_sample_policy[] = {
147 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
148 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
149 };
150 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
151 double percentage;
152 const struct nlattr *nla_acts;
153 int len;
154
155 ds_put_cstr(ds, "sample");
156
157 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
158 ds_put_cstr(ds, "(error)");
159 return;
160 }
161
162 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
163 UINT32_MAX;
164
165 ds_put_format(ds, "(sample=%.1f%%,", percentage);
166
167 ds_put_cstr(ds, "actions(");
168 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
169 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
170 format_odp_actions(ds, nla_acts, len);
171 ds_put_format(ds, "))");
172 }
173
174 static const char *
175 slow_path_reason_to_string(enum slow_path_reason reason)
176 {
177 switch (reason) {
178 case SLOW_CFM:
179 return "cfm";
180 case SLOW_LACP:
181 return "lacp";
182 case SLOW_STP:
183 return "stp";
184 case SLOW_BFD:
185 return "bfd";
186 case SLOW_CONTROLLER:
187 return "controller";
188 case __SLOW_MAX:
189 default:
190 return NULL;
191 }
192 }
193
194 static enum slow_path_reason
195 string_to_slow_path_reason(const char *string)
196 {
197 enum slow_path_reason i;
198
199 for (i = 1; i < __SLOW_MAX; i++) {
200 if (!strcmp(string, slow_path_reason_to_string(i))) {
201 return i;
202 }
203 }
204
205 return 0;
206 }
207
208 static int
209 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
210 uint32_t *res)
211 {
212 uint32_t result = 0;
213 int n = 0;
214
215 if (s[n] != '(') {
216 return -EINVAL;
217 }
218 n++;
219
220 while (s[n] != ')') {
221 unsigned long long int flags;
222 uint32_t bit;
223 int n0;
224
225 if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) {
226 n += n0 + (s[n + n0] == ',');
227 result |= flags;
228 continue;
229 }
230
231 for (bit = 1; bit; bit <<= 1) {
232 const char *name = bit_to_string(bit);
233 size_t len;
234
235 if (!name) {
236 continue;
237 }
238
239 len = strlen(name);
240 if (!strncmp(s + n, name, len) &&
241 (s[n + len] == ',' || s[n + len] == ')')) {
242 result |= bit;
243 n += len + (s[n + len] == ',');
244 break;
245 }
246 }
247
248 if (!bit) {
249 return -EINVAL;
250 }
251 }
252 n++;
253
254 *res = result;
255 return n;
256 }
257
258 static void
259 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
260 {
261 static const struct nl_policy ovs_userspace_policy[] = {
262 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
263 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_UNSPEC,
264 .optional = true },
265 };
266 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
267 const struct nlattr *userdata_attr;
268
269 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
270 ds_put_cstr(ds, "userspace(error)");
271 return;
272 }
273
274 ds_put_format(ds, "userspace(pid=%"PRIu32,
275 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
276
277 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
278
279 if (userdata_attr) {
280 const uint8_t *userdata = nl_attr_get(userdata_attr);
281 size_t userdata_len = nl_attr_get_size(userdata_attr);
282 bool userdata_unspec = true;
283 union user_action_cookie cookie;
284
285 if (userdata_len >= sizeof cookie.type
286 && userdata_len <= sizeof cookie) {
287
288 memset(&cookie, 0, sizeof cookie);
289 memcpy(&cookie, userdata, userdata_len);
290
291 userdata_unspec = false;
292
293 if (userdata_len == sizeof cookie.sflow
294 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
295 ds_put_format(ds, ",sFlow("
296 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
297 vlan_tci_to_vid(cookie.sflow.vlan_tci),
298 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
299 cookie.sflow.output);
300 } else if (userdata_len == sizeof cookie.slow_path
301 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
302 const char *reason;
303 reason = slow_path_reason_to_string(cookie.slow_path.reason);
304 reason = reason ? reason : "";
305 ds_put_format(ds, ",slow_path(%s)", reason);
306 } else if (userdata_len == sizeof cookie.flow_sample
307 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
308 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
309 ",collector_set_id=%"PRIu32
310 ",obs_domain_id=%"PRIu32
311 ",obs_point_id=%"PRIu32")",
312 cookie.flow_sample.probability,
313 cookie.flow_sample.collector_set_id,
314 cookie.flow_sample.obs_domain_id,
315 cookie.flow_sample.obs_point_id);
316 } else if (userdata_len == sizeof cookie.ipfix
317 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
318 ds_put_format(ds, ",ipfix");
319 } else {
320 userdata_unspec = true;
321 }
322 }
323
324 if (userdata_unspec) {
325 size_t i;
326 ds_put_format(ds, ",userdata(");
327 for (i = 0; i < userdata_len; i++) {
328 ds_put_format(ds, "%02x", userdata[i]);
329 }
330 ds_put_char(ds, ')');
331 }
332 }
333
334 ds_put_char(ds, ')');
335 }
336
337 static void
338 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
339 {
340 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
341 vlan_tci_to_vid(vlan_tci),
342 vlan_tci_to_pcp(vlan_tci));
343 if (!(vlan_tci & htons(VLAN_CFI))) {
344 ds_put_cstr(ds, ",cfi=0");
345 }
346 }
347
348 static void
349 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
350 {
351 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
352 mpls_lse_to_label(mpls_lse),
353 mpls_lse_to_tc(mpls_lse),
354 mpls_lse_to_ttl(mpls_lse),
355 mpls_lse_to_bos(mpls_lse));
356 }
357
358 static void
359 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
360 const struct ovs_key_mpls *mpls_mask)
361 {
362 ovs_be32 key = mpls_key->mpls_lse;
363
364 if (mpls_mask == NULL) {
365 format_mpls_lse(ds, key);
366 } else {
367 ovs_be32 mask = mpls_mask->mpls_lse;
368
369 ds_put_format(ds, "label=%"PRIu32"/0x%x,tc=%d/%x,ttl=%d/0x%x,bos=%d/%x",
370 mpls_lse_to_label(key), mpls_lse_to_label(mask),
371 mpls_lse_to_tc(key), mpls_lse_to_tc(mask),
372 mpls_lse_to_ttl(key), mpls_lse_to_ttl(mask),
373 mpls_lse_to_bos(key), mpls_lse_to_bos(mask));
374 }
375 }
376
377 static void
378 format_odp_action(struct ds *ds, const struct nlattr *a)
379 {
380 int expected_len;
381 enum ovs_action_attr type = nl_attr_type(a);
382 const struct ovs_action_push_vlan *vlan;
383
384 expected_len = odp_action_len(nl_attr_type(a));
385 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
386 ds_put_format(ds, "bad length %zu, expected %d for: ",
387 nl_attr_get_size(a), expected_len);
388 format_generic_odp_action(ds, a);
389 return;
390 }
391
392 switch (type) {
393 case OVS_ACTION_ATTR_OUTPUT:
394 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
395 break;
396 case OVS_ACTION_ATTR_USERSPACE:
397 format_odp_userspace_action(ds, a);
398 break;
399 case OVS_ACTION_ATTR_SET:
400 ds_put_cstr(ds, "set(");
401 format_odp_key_attr(nl_attr_get(a), NULL, ds);
402 ds_put_cstr(ds, ")");
403 break;
404 case OVS_ACTION_ATTR_PUSH_VLAN:
405 vlan = nl_attr_get(a);
406 ds_put_cstr(ds, "push_vlan(");
407 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
408 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
409 }
410 format_vlan_tci(ds, vlan->vlan_tci);
411 ds_put_char(ds, ')');
412 break;
413 case OVS_ACTION_ATTR_POP_VLAN:
414 ds_put_cstr(ds, "pop_vlan");
415 break;
416 case OVS_ACTION_ATTR_PUSH_MPLS: {
417 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
418 ds_put_cstr(ds, "push_mpls(");
419 format_mpls_lse(ds, mpls->mpls_lse);
420 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
421 break;
422 }
423 case OVS_ACTION_ATTR_POP_MPLS: {
424 ovs_be16 ethertype = nl_attr_get_be16(a);
425 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
426 break;
427 }
428 case OVS_ACTION_ATTR_SAMPLE:
429 format_odp_sample_action(ds, a);
430 break;
431 case OVS_ACTION_ATTR_UNSPEC:
432 case __OVS_ACTION_ATTR_MAX:
433 default:
434 format_generic_odp_action(ds, a);
435 break;
436 }
437 }
438
439 void
440 format_odp_actions(struct ds *ds, const struct nlattr *actions,
441 size_t actions_len)
442 {
443 if (actions_len) {
444 const struct nlattr *a;
445 unsigned int left;
446
447 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
448 if (a != actions) {
449 ds_put_char(ds, ',');
450 }
451 format_odp_action(ds, a);
452 }
453 if (left) {
454 int i;
455
456 if (left == actions_len) {
457 ds_put_cstr(ds, "<empty>");
458 }
459 ds_put_format(ds, ",***%u leftover bytes*** (", left);
460 for (i = 0; i < left; i++) {
461 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
462 }
463 ds_put_char(ds, ')');
464 }
465 } else {
466 ds_put_cstr(ds, "drop");
467 }
468 }
469
470 static int
471 parse_odp_action(const char *s, const struct simap *port_names,
472 struct ofpbuf *actions)
473 {
474 /* Many of the sscanf calls in this function use oversized destination
475 * fields because some sscanf() implementations truncate the range of %i
476 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
477 * value of 0x7fff. The other alternatives are to allow only a single
478 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
479 * parsers.
480 *
481 * The tun_id parser has to use an alternative approach because there is no
482 * type larger than 64 bits. */
483
484 {
485 unsigned long long int port;
486 int n = -1;
487
488 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
489 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
490 return n;
491 }
492 }
493
494 if (port_names) {
495 int len = strcspn(s, delimiters);
496 struct simap_node *node;
497
498 node = simap_find_len(port_names, s, len);
499 if (node) {
500 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
501 return len;
502 }
503 }
504
505 {
506 unsigned long long int pid;
507 unsigned long long int output;
508 unsigned long long int probability;
509 unsigned long long int collector_set_id;
510 unsigned long long int obs_domain_id;
511 unsigned long long int obs_point_id;
512 int vid, pcp;
513 int n = -1;
514
515 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
516 odp_put_userspace_action(pid, NULL, 0, actions);
517 return n;
518 } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i,"
519 "pcp=%i,output=%lli))%n",
520 &pid, &vid, &pcp, &output, &n) > 0 && n > 0) {
521 union user_action_cookie cookie;
522 uint16_t tci;
523
524 tci = vid | (pcp << VLAN_PCP_SHIFT);
525 if (tci) {
526 tci |= VLAN_CFI;
527 }
528
529 cookie.type = USER_ACTION_COOKIE_SFLOW;
530 cookie.sflow.vlan_tci = htons(tci);
531 cookie.sflow.output = output;
532 odp_put_userspace_action(pid, &cookie, sizeof cookie.sflow,
533 actions);
534 return n;
535 } else if (sscanf(s, "userspace(pid=%lli,slow_path(%n", &pid, &n) > 0
536 && n > 0) {
537 union user_action_cookie cookie;
538 char reason[32];
539
540 if (s[n] == ')' && s[n + 1] == ')') {
541 reason[0] = '\0';
542 n += 2;
543 } else if (sscanf(s + n, "%31[^)]))", reason) > 0) {
544 n += strlen(reason) + 2;
545 } else {
546 return -EINVAL;
547 }
548
549 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
550 cookie.slow_path.unused = 0;
551 cookie.slow_path.reason = string_to_slow_path_reason(reason);
552
553 if (reason[0] && !cookie.slow_path.reason) {
554 return -EINVAL;
555 }
556
557 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path,
558 actions);
559 return n;
560 } else if (sscanf(s, "userspace(pid=%lli,flow_sample(probability=%lli,"
561 "collector_set_id=%lli,obs_domain_id=%lli,"
562 "obs_point_id=%lli))%n",
563 &pid, &probability, &collector_set_id,
564 &obs_domain_id, &obs_point_id, &n) > 0 && n > 0) {
565 union user_action_cookie cookie;
566
567 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
568 cookie.flow_sample.probability = probability;
569 cookie.flow_sample.collector_set_id = collector_set_id;
570 cookie.flow_sample.obs_domain_id = obs_domain_id;
571 cookie.flow_sample.obs_point_id = obs_point_id;
572 odp_put_userspace_action(pid, &cookie, sizeof cookie.flow_sample,
573 actions);
574 return n;
575 } else if (sscanf(s, "userspace(pid=%lli,ipfix)%n", &pid, &n) > 0
576 && n > 0) {
577 union user_action_cookie cookie;
578
579 cookie.type = USER_ACTION_COOKIE_IPFIX;
580 odp_put_userspace_action(pid, &cookie, sizeof cookie.ipfix,
581 actions);
582 return n;
583 } else if (sscanf(s, "userspace(pid=%lli,userdata(%n", &pid, &n) > 0
584 && n > 0) {
585 struct ofpbuf buf;
586 char *end;
587
588 ofpbuf_init(&buf, 16);
589 end = ofpbuf_put_hex(&buf, &s[n], NULL);
590 if (end[0] == ')' && end[1] == ')') {
591 odp_put_userspace_action(pid, buf.data, buf.size, actions);
592 ofpbuf_uninit(&buf);
593 return (end + 2) - s;
594 }
595 }
596 }
597
598 if (!strncmp(s, "set(", 4)) {
599 size_t start_ofs;
600 int retval;
601
602 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
603 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, NULL);
604 if (retval < 0) {
605 return retval;
606 }
607 if (s[retval + 4] != ')') {
608 return -EINVAL;
609 }
610 nl_msg_end_nested(actions, start_ofs);
611 return retval + 5;
612 }
613
614 {
615 struct ovs_action_push_vlan push;
616 int tpid = ETH_TYPE_VLAN;
617 int vid, pcp;
618 int cfi = 1;
619 int n = -1;
620
621 if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0
622 && n > 0)
623 || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
624 &vid, &pcp, &cfi, &n) > 0 && n > 0)
625 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
626 &tpid, &vid, &pcp, &n) > 0 && n > 0)
627 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
628 &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
629 push.vlan_tpid = htons(tpid);
630 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
631 | (pcp << VLAN_PCP_SHIFT)
632 | (cfi ? VLAN_CFI : 0));
633 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
634 &push, sizeof push);
635
636 return n;
637 }
638 }
639
640 if (!strncmp(s, "pop_vlan", 8)) {
641 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
642 return 8;
643 }
644
645 {
646 double percentage;
647 int n = -1;
648
649 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
650 && percentage >= 0. && percentage <= 100.0
651 && n > 0) {
652 size_t sample_ofs, actions_ofs;
653 double probability;
654
655 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
656 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
657 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
658 (probability <= 0 ? 0
659 : probability >= UINT32_MAX ? UINT32_MAX
660 : probability));
661
662 actions_ofs = nl_msg_start_nested(actions,
663 OVS_SAMPLE_ATTR_ACTIONS);
664 for (;;) {
665 int retval;
666
667 n += strspn(s + n, delimiters);
668 if (s[n] == ')') {
669 break;
670 }
671
672 retval = parse_odp_action(s + n, port_names, actions);
673 if (retval < 0) {
674 return retval;
675 }
676 n += retval;
677 }
678 nl_msg_end_nested(actions, actions_ofs);
679 nl_msg_end_nested(actions, sample_ofs);
680
681 return s[n + 1] == ')' ? n + 2 : -EINVAL;
682 }
683 }
684
685 return -EINVAL;
686 }
687
688 /* Parses the string representation of datapath actions, in the format output
689 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
690 * value. On success, the ODP actions are appended to 'actions' as a series of
691 * Netlink attributes. On failure, no data is appended to 'actions'. Either
692 * way, 'actions''s data might be reallocated. */
693 int
694 odp_actions_from_string(const char *s, const struct simap *port_names,
695 struct ofpbuf *actions)
696 {
697 size_t old_size;
698
699 if (!strcasecmp(s, "drop")) {
700 return 0;
701 }
702
703 old_size = actions->size;
704 for (;;) {
705 int retval;
706
707 s += strspn(s, delimiters);
708 if (!*s) {
709 return 0;
710 }
711
712 retval = parse_odp_action(s, port_names, actions);
713 if (retval < 0 || !strchr(delimiters, s[retval])) {
714 actions->size = old_size;
715 return -retval;
716 }
717 s += retval;
718 }
719
720 return 0;
721 }
722 \f
723 /* Returns the correct length of the payload for a flow key attribute of the
724 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
725 * is variable length. */
726 static int
727 odp_flow_key_attr_len(uint16_t type)
728 {
729 if (type > OVS_KEY_ATTR_MAX) {
730 return -1;
731 }
732
733 switch ((enum ovs_key_attr) type) {
734 case OVS_KEY_ATTR_ENCAP: return -2;
735 case OVS_KEY_ATTR_PRIORITY: return 4;
736 case OVS_KEY_ATTR_SKB_MARK: return 4;
737 case OVS_KEY_ATTR_TUNNEL: return -2;
738 case OVS_KEY_ATTR_IN_PORT: return 4;
739 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
740 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
741 case OVS_KEY_ATTR_ETHERTYPE: return 2;
742 case OVS_KEY_ATTR_MPLS: return sizeof(struct ovs_key_mpls);
743 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
744 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
745 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
746 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
747 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
748 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
749 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
750 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
751
752 case OVS_KEY_ATTR_UNSPEC:
753 case __OVS_KEY_ATTR_MAX:
754 return -1;
755 }
756
757 return -1;
758 }
759
760 static void
761 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
762 {
763 size_t len = nl_attr_get_size(a);
764 if (len) {
765 const uint8_t *unspec;
766 unsigned int i;
767
768 unspec = nl_attr_get(a);
769 for (i = 0; i < len; i++) {
770 if (i) {
771 ds_put_char(ds, ' ');
772 }
773 ds_put_format(ds, "%02x", unspec[i]);
774 }
775 }
776 }
777
778 static const char *
779 ovs_frag_type_to_string(enum ovs_frag_type type)
780 {
781 switch (type) {
782 case OVS_FRAG_TYPE_NONE:
783 return "no";
784 case OVS_FRAG_TYPE_FIRST:
785 return "first";
786 case OVS_FRAG_TYPE_LATER:
787 return "later";
788 case __OVS_FRAG_TYPE_MAX:
789 default:
790 return "<error>";
791 }
792 }
793
794 static int
795 tunnel_key_attr_len(int type)
796 {
797 switch (type) {
798 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
799 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
800 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
801 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
802 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
803 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
804 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
805 case __OVS_TUNNEL_KEY_ATTR_MAX:
806 return -1;
807 }
808 return -1;
809 }
810
811 enum odp_key_fitness
812 odp_tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
813 {
814 unsigned int left;
815 const struct nlattr *a;
816 bool ttl = false;
817 bool unknown = false;
818
819 NL_NESTED_FOR_EACH(a, left, attr) {
820 uint16_t type = nl_attr_type(a);
821 size_t len = nl_attr_get_size(a);
822 int expected_len = tunnel_key_attr_len(type);
823
824 if (len != expected_len && expected_len >= 0) {
825 return ODP_FIT_ERROR;
826 }
827
828 switch (type) {
829 case OVS_TUNNEL_KEY_ATTR_ID:
830 tun->tun_id = nl_attr_get_be64(a);
831 tun->flags |= FLOW_TNL_F_KEY;
832 break;
833 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
834 tun->ip_src = nl_attr_get_be32(a);
835 break;
836 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
837 tun->ip_dst = nl_attr_get_be32(a);
838 break;
839 case OVS_TUNNEL_KEY_ATTR_TOS:
840 tun->ip_tos = nl_attr_get_u8(a);
841 break;
842 case OVS_TUNNEL_KEY_ATTR_TTL:
843 tun->ip_ttl = nl_attr_get_u8(a);
844 ttl = true;
845 break;
846 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
847 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
848 break;
849 case OVS_TUNNEL_KEY_ATTR_CSUM:
850 tun->flags |= FLOW_TNL_F_CSUM;
851 break;
852 default:
853 /* Allow this to show up as unexpected, if there are unknown
854 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
855 unknown = true;
856 break;
857 }
858 }
859
860 if (!ttl) {
861 return ODP_FIT_ERROR;
862 }
863 if (unknown) {
864 return ODP_FIT_TOO_MUCH;
865 }
866 return ODP_FIT_PERFECT;
867 }
868
869 static void
870 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
871 {
872 size_t tun_key_ofs;
873
874 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
875
876 if (tun_key->flags & FLOW_TNL_F_KEY) {
877 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
878 }
879 if (tun_key->ip_src) {
880 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
881 }
882 if (tun_key->ip_dst) {
883 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
884 }
885 if (tun_key->ip_tos) {
886 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
887 }
888 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
889 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
890 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
891 }
892 if (tun_key->flags & FLOW_TNL_F_CSUM) {
893 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
894 }
895
896 nl_msg_end_nested(a, tun_key_ofs);
897 }
898
899 static bool
900 odp_mask_attr_is_exact(const struct nlattr *ma)
901 {
902 bool is_exact = false;
903 enum ovs_key_attr attr = nl_attr_type(ma);
904
905 if (attr == OVS_KEY_ATTR_TUNNEL) {
906 /* XXX this is a hack for now. Should change
907 * the exact match dection to per field
908 * instead of per attribute.
909 */
910 struct flow_tnl tun_mask;
911 memset(&tun_mask, 0, sizeof tun_mask);
912 odp_tun_key_from_attr(ma, &tun_mask);
913 if (tun_mask.flags == (FLOW_TNL_F_KEY
914 | FLOW_TNL_F_DONT_FRAGMENT
915 | FLOW_TNL_F_CSUM)) {
916 /* The flags are exact match, check the remaining fields. */
917 tun_mask.flags = 0xffff;
918 is_exact = is_all_ones((uint8_t *)&tun_mask,
919 offsetof(struct flow_tnl, ip_ttl));
920 }
921 } else {
922 is_exact = is_all_ones(nl_attr_get(ma), nl_attr_get_size(ma));
923 }
924
925 return is_exact;
926 }
927
928
929 static void
930 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
931 struct ds *ds)
932 {
933 struct flow_tnl tun_key;
934 enum ovs_key_attr attr = nl_attr_type(a);
935 char namebuf[OVS_KEY_ATTR_BUFSIZE];
936 int expected_len;
937
938 if (ma && odp_mask_attr_is_exact(ma)) {
939 ma = NULL;
940 }
941
942 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
943
944 {
945 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
946 if (expected_len != -2) {
947 bool bad_key_len = nl_attr_get_size(a) != expected_len;
948 bool bad_mask_len = ma && nl_attr_get_size(a) != expected_len;
949
950 if (bad_key_len || bad_mask_len) {
951 if (bad_key_len) {
952 ds_put_format(ds, "(bad key length %zu, expected %d)(",
953 nl_attr_get_size(a),
954 odp_flow_key_attr_len(nl_attr_type(a)));
955 }
956 format_generic_odp_key(a, ds);
957 if (bad_mask_len) {
958 ds_put_char(ds, '/');
959 ds_put_format(ds, "(bad mask length %zu, expected %d)(",
960 nl_attr_get_size(ma),
961 odp_flow_key_attr_len(nl_attr_type(ma)));
962 }
963 format_generic_odp_key(ma, ds);
964 ds_put_char(ds, ')');
965 return;
966 }
967 }
968 }
969
970 ds_put_char(ds, '(');
971 switch (attr) {
972 case OVS_KEY_ATTR_ENCAP:
973 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
974 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
975 nl_attr_get(ma), nl_attr_get_size(ma), ds);
976 } else if (nl_attr_get_size(a)) {
977 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, ds);
978 }
979 break;
980
981 case OVS_KEY_ATTR_PRIORITY:
982 case OVS_KEY_ATTR_SKB_MARK:
983 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
984 if (ma) {
985 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
986 }
987 break;
988
989 case OVS_KEY_ATTR_TUNNEL:
990 memset(&tun_key, 0, sizeof tun_key);
991 if (odp_tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
992 ds_put_format(ds, "error");
993 } else if (ma) {
994 struct flow_tnl tun_mask;
995
996 memset(&tun_mask, 0, sizeof tun_mask);
997 odp_tun_key_from_attr(ma, &tun_mask);
998 ds_put_format(ds, "tun_id=%#"PRIx64"/%#"PRIx64
999 ",src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1000 ",tos=%#"PRIx8"/%#"PRIx8",ttl=%"PRIu8"/%#"PRIx8
1001 ",flags(",
1002 ntohll(tun_key.tun_id), ntohll(tun_mask.tun_id),
1003 IP_ARGS(tun_key.ip_src), IP_ARGS(tun_mask.ip_src),
1004 IP_ARGS(tun_key.ip_dst), IP_ARGS(tun_mask.ip_dst),
1005 tun_key.ip_tos, tun_mask.ip_tos,
1006 tun_key.ip_ttl, tun_mask.ip_ttl);
1007
1008 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1009
1010 /* XXX This code is correct, but enabling it would break the unit
1011 test. Disable it for now until the input parser is fixed.
1012
1013 ds_put_char(ds, '/');
1014 format_flags(ds, flow_tun_flag_to_string, tun_mask.flags, ',');
1015 */
1016 ds_put_char(ds, ')');
1017 } else {
1018 ds_put_format(ds, "tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
1019 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
1020 ntohll(tun_key.tun_id),
1021 IP_ARGS(tun_key.ip_src),
1022 IP_ARGS(tun_key.ip_dst),
1023 tun_key.ip_tos, tun_key.ip_ttl);
1024
1025 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1026 ds_put_char(ds, ')');
1027 }
1028 break;
1029
1030 case OVS_KEY_ATTR_IN_PORT:
1031 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1032 if (ma) {
1033 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1034 }
1035 break;
1036
1037 case OVS_KEY_ATTR_ETHERNET:
1038 if (ma) {
1039 const struct ovs_key_ethernet *eth_mask = nl_attr_get(ma);
1040 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1041
1042 ds_put_format(ds, "src="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1043 ",dst="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1044 ETH_ADDR_ARGS(eth_key->eth_src),
1045 ETH_ADDR_ARGS(eth_mask->eth_src),
1046 ETH_ADDR_ARGS(eth_key->eth_dst),
1047 ETH_ADDR_ARGS(eth_mask->eth_dst));
1048 } else {
1049 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1050
1051 ds_put_format(ds, "src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT,
1052 ETH_ADDR_ARGS(eth_key->eth_src),
1053 ETH_ADDR_ARGS(eth_key->eth_dst));
1054 }
1055 break;
1056
1057 case OVS_KEY_ATTR_VLAN:
1058 {
1059 ovs_be16 vlan_tci = nl_attr_get_be16(a);
1060 if (ma) {
1061 ovs_be16 mask = nl_attr_get_be16(ma);
1062 ds_put_format(ds, "vid=%"PRIu16"/%"PRIx16",pcp=%d/0x%x,cfi=%d/%d",
1063 vlan_tci_to_vid(vlan_tci),
1064 vlan_tci_to_vid(mask),
1065 vlan_tci_to_pcp(vlan_tci),
1066 vlan_tci_to_vid(mask),
1067 vlan_tci_to_cfi(vlan_tci),
1068 vlan_tci_to_cfi(mask));
1069 } else {
1070 format_vlan_tci(ds, vlan_tci);
1071 }
1072 }
1073 break;
1074
1075 case OVS_KEY_ATTR_MPLS: {
1076 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
1077 const struct ovs_key_mpls *mpls_mask = NULL;
1078 if (ma) {
1079 mpls_mask = nl_attr_get(ma);
1080 }
1081 format_mpls(ds, mpls_key, mpls_mask);
1082 break;
1083 }
1084
1085 case OVS_KEY_ATTR_ETHERTYPE:
1086 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
1087 if (ma) {
1088 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
1089 }
1090 break;
1091
1092 case OVS_KEY_ATTR_IPV4:
1093 if (ma) {
1094 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1095 const struct ovs_key_ipv4 *ipv4_mask = nl_attr_get(ma);
1096
1097 ds_put_format(ds, "src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1098 ",proto=%"PRIu8"/%#"PRIx8",tos=%#"PRIx8"/%#"PRIx8
1099 ",ttl=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1100 IP_ARGS(ipv4_key->ipv4_src),
1101 IP_ARGS(ipv4_mask->ipv4_src),
1102 IP_ARGS(ipv4_key->ipv4_dst),
1103 IP_ARGS(ipv4_mask->ipv4_dst),
1104 ipv4_key->ipv4_proto, ipv4_mask->ipv4_proto,
1105 ipv4_key->ipv4_tos, ipv4_mask->ipv4_tos,
1106 ipv4_key->ipv4_ttl, ipv4_mask->ipv4_ttl,
1107 ovs_frag_type_to_string(ipv4_key->ipv4_frag),
1108 ipv4_mask->ipv4_frag);
1109 } else {
1110 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1111
1112 ds_put_format(ds, "src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
1113 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s",
1114 IP_ARGS(ipv4_key->ipv4_src),
1115 IP_ARGS(ipv4_key->ipv4_dst),
1116 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
1117 ipv4_key->ipv4_ttl,
1118 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
1119 }
1120 break;
1121
1122 case OVS_KEY_ATTR_IPV6:
1123 if (ma) {
1124 const struct ovs_key_ipv6 *ipv6_key, *ipv6_mask;
1125 char src_str[INET6_ADDRSTRLEN];
1126 char dst_str[INET6_ADDRSTRLEN];
1127 char src_mask[INET6_ADDRSTRLEN];
1128 char dst_mask[INET6_ADDRSTRLEN];
1129
1130 ipv6_key = nl_attr_get(a);
1131 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1132 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1133
1134 ipv6_mask = nl_attr_get(ma);
1135 inet_ntop(AF_INET6, ipv6_mask->ipv6_src, src_mask, sizeof src_mask);
1136 inet_ntop(AF_INET6, ipv6_mask->ipv6_dst, dst_mask, sizeof dst_mask);
1137
1138 ds_put_format(ds, "src=%s/%s,dst=%s/%s,label=%#"PRIx32"/%#"PRIx32
1139 ",proto=%"PRIu8"/%#"PRIx8",tclass=%#"PRIx8"/%#"PRIx8
1140 ",hlimit=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1141 src_str, src_mask, dst_str, dst_mask,
1142 ntohl(ipv6_key->ipv6_label),
1143 ntohl(ipv6_mask->ipv6_label),
1144 ipv6_key->ipv6_proto, ipv6_mask->ipv6_proto,
1145 ipv6_key->ipv6_tclass, ipv6_mask->ipv6_tclass,
1146 ipv6_key->ipv6_hlimit, ipv6_mask->ipv6_hlimit,
1147 ovs_frag_type_to_string(ipv6_key->ipv6_frag),
1148 ipv6_mask->ipv6_frag);
1149 } else {
1150 const struct ovs_key_ipv6 *ipv6_key;
1151 char src_str[INET6_ADDRSTRLEN];
1152 char dst_str[INET6_ADDRSTRLEN];
1153
1154 ipv6_key = nl_attr_get(a);
1155 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1156 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1157
1158 ds_put_format(ds, "src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
1159 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s",
1160 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
1161 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
1162 ipv6_key->ipv6_hlimit,
1163 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
1164 }
1165 break;
1166
1167 case OVS_KEY_ATTR_TCP:
1168 if (ma) {
1169 const struct ovs_key_tcp *tcp_mask = nl_attr_get(ma);
1170 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1171
1172 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1173 ",dst=%"PRIu16"/%#"PRIx16,
1174 ntohs(tcp_key->tcp_src), ntohs(tcp_mask->tcp_src),
1175 ntohs(tcp_key->tcp_dst), ntohs(tcp_mask->tcp_dst));
1176 } else {
1177 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1178
1179 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1180 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
1181 }
1182 break;
1183
1184 case OVS_KEY_ATTR_UDP:
1185 if (ma) {
1186 const struct ovs_key_udp *udp_mask = nl_attr_get(ma);
1187 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1188
1189 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1190 ",dst=%"PRIu16"/%#"PRIx16,
1191 ntohs(udp_key->udp_src), ntohs(udp_mask->udp_src),
1192 ntohs(udp_key->udp_dst), ntohs(udp_mask->udp_dst));
1193 } else {
1194 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1195
1196 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1197 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
1198 }
1199 break;
1200
1201 case OVS_KEY_ATTR_ICMP:
1202 if (ma) {
1203 const struct ovs_key_icmp *icmp_mask = nl_attr_get(ma);
1204 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1205
1206 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1207 icmp_key->icmp_type, icmp_mask->icmp_type,
1208 icmp_key->icmp_code, icmp_mask->icmp_code);
1209 } else {
1210 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1211
1212 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1213 icmp_key->icmp_type, icmp_key->icmp_code);
1214 }
1215 break;
1216
1217 case OVS_KEY_ATTR_ICMPV6:
1218 if (ma) {
1219 const struct ovs_key_icmpv6 *icmpv6_mask = nl_attr_get(ma);
1220 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1221
1222 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1223 icmpv6_key->icmpv6_type, icmpv6_mask->icmpv6_type,
1224 icmpv6_key->icmpv6_code, icmpv6_mask->icmpv6_code);
1225 } else {
1226 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1227
1228 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1229 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
1230 }
1231 break;
1232
1233 case OVS_KEY_ATTR_ARP:
1234 if (ma) {
1235 const struct ovs_key_arp *arp_mask = nl_attr_get(ma);
1236 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1237
1238 ds_put_format(ds, "sip="IP_FMT"/"IP_FMT",tip="IP_FMT"/"IP_FMT
1239 ",op=%"PRIu16"/%#"PRIx16
1240 ",sha="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1241 ",tha="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1242 IP_ARGS(arp_key->arp_sip),
1243 IP_ARGS(arp_mask->arp_sip),
1244 IP_ARGS(arp_key->arp_tip),
1245 IP_ARGS(arp_mask->arp_tip),
1246 ntohs(arp_key->arp_op), ntohs(arp_mask->arp_op),
1247 ETH_ADDR_ARGS(arp_key->arp_sha),
1248 ETH_ADDR_ARGS(arp_mask->arp_sha),
1249 ETH_ADDR_ARGS(arp_key->arp_tha),
1250 ETH_ADDR_ARGS(arp_mask->arp_tha));
1251 } else {
1252 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1253
1254 ds_put_format(ds, "sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
1255 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT,
1256 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
1257 ntohs(arp_key->arp_op),
1258 ETH_ADDR_ARGS(arp_key->arp_sha),
1259 ETH_ADDR_ARGS(arp_key->arp_tha));
1260 }
1261 break;
1262
1263 case OVS_KEY_ATTR_ND: {
1264 const struct ovs_key_nd *nd_key, *nd_mask;
1265 char target[INET6_ADDRSTRLEN];
1266
1267 nd_key = nl_attr_get(a);
1268 nd_mask = ma ? nl_attr_get(ma) : NULL;
1269
1270 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
1271 ds_put_format(ds, "target=%s", target);
1272 if (nd_mask) {
1273 inet_ntop(AF_INET6, nd_mask->nd_target, target, sizeof target);
1274 ds_put_format(ds, "/%s", target);
1275 }
1276
1277 if (!eth_addr_is_zero(nd_key->nd_sll)) {
1278 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
1279 ETH_ADDR_ARGS(nd_key->nd_sll));
1280 if (nd_mask) {
1281 ds_put_format(ds, "/"ETH_ADDR_FMT,
1282 ETH_ADDR_ARGS(nd_mask->nd_sll));
1283 }
1284 }
1285 if (!eth_addr_is_zero(nd_key->nd_tll)) {
1286 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
1287 ETH_ADDR_ARGS(nd_key->nd_tll));
1288 if (nd_mask) {
1289 ds_put_format(ds, "/"ETH_ADDR_FMT,
1290 ETH_ADDR_ARGS(nd_mask->nd_tll));
1291 }
1292 }
1293 break;
1294 }
1295
1296 case OVS_KEY_ATTR_UNSPEC:
1297 case __OVS_KEY_ATTR_MAX:
1298 default:
1299 format_generic_odp_key(a, ds);
1300 if (ma) {
1301 ds_put_char(ds, '/');
1302 format_generic_odp_key(ma, ds);
1303 }
1304 break;
1305 }
1306 ds_put_char(ds, ')');
1307 }
1308
1309 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1310 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
1311 * 'mask_len' bytes of 'mask' which apply to 'key'. */
1312 void
1313 odp_flow_format(const struct nlattr *key, size_t key_len,
1314 const struct nlattr *mask, size_t mask_len,
1315 struct ds *ds)
1316 {
1317 if (key_len) {
1318 const struct nlattr *a;
1319 unsigned int left;
1320 bool has_ethtype_key = false;
1321 const struct nlattr *ma = NULL;
1322
1323 NL_ATTR_FOR_EACH (a, left, key, key_len) {
1324 if (a != key) {
1325 ds_put_char(ds, ',');
1326 }
1327 if (nl_attr_type(a) == OVS_KEY_ATTR_ETHERTYPE) {
1328 has_ethtype_key = true;
1329 }
1330 if (mask && mask_len) {
1331 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
1332 }
1333 format_odp_key_attr(a, ma, ds);
1334 }
1335 if (left) {
1336 int i;
1337
1338 if (left == key_len) {
1339 ds_put_cstr(ds, "<empty>");
1340 }
1341 ds_put_format(ds, ",***%u leftover bytes*** (", left);
1342 for (i = 0; i < left; i++) {
1343 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
1344 }
1345 ds_put_char(ds, ')');
1346 }
1347 if (!has_ethtype_key) {
1348 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
1349 if (ma) {
1350 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
1351 ntohs(nl_attr_get_be16(ma)));
1352 }
1353 }
1354 } else {
1355 ds_put_cstr(ds, "<empty>");
1356 }
1357 }
1358
1359 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1360 * OVS_KEY_ATTR_* attributes in 'key'. */
1361 void
1362 odp_flow_key_format(const struct nlattr *key,
1363 size_t key_len, struct ds *ds)
1364 {
1365 odp_flow_format(key, key_len, NULL, 0, ds);
1366 }
1367
1368 static int
1369 put_nd_key(int n, const char *nd_target_s,
1370 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
1371 {
1372 struct ovs_key_nd nd_key;
1373
1374 memset(&nd_key, 0, sizeof nd_key);
1375 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
1376 return -EINVAL;
1377 }
1378 if (nd_sll) {
1379 memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
1380 }
1381 if (nd_tll) {
1382 memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
1383 }
1384 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, &nd_key, sizeof nd_key);
1385 return n;
1386 }
1387
1388 static bool
1389 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1390 {
1391 if (!strcasecmp(s, "no")) {
1392 *type = OVS_FRAG_TYPE_NONE;
1393 } else if (!strcasecmp(s, "first")) {
1394 *type = OVS_FRAG_TYPE_FIRST;
1395 } else if (!strcasecmp(s, "later")) {
1396 *type = OVS_FRAG_TYPE_LATER;
1397 } else {
1398 return false;
1399 }
1400 return true;
1401 }
1402
1403 static ovs_be32
1404 mpls_lse_from_components(int mpls_label, int mpls_tc, int mpls_ttl, int mpls_bos)
1405 {
1406 return (htonl((mpls_label << MPLS_LABEL_SHIFT) |
1407 (mpls_tc << MPLS_TC_SHIFT) |
1408 (mpls_ttl << MPLS_TTL_SHIFT) |
1409 (mpls_bos << MPLS_BOS_SHIFT)));
1410 }
1411
1412 static int
1413 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
1414 struct ofpbuf *key, struct ofpbuf *mask)
1415 {
1416 /* Many of the sscanf calls in this function use oversized destination
1417 * fields because some sscanf() implementations truncate the range of %i
1418 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
1419 * value of 0x7fff. The other alternatives are to allow only a single
1420 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
1421 * parsers.
1422 *
1423 * The tun_id parser has to use an alternative approach because there is no
1424 * type larger than 64 bits. */
1425
1426 {
1427 unsigned long long int priority;
1428 unsigned long long int priority_mask;
1429 int n = -1;
1430
1431 if (mask && sscanf(s, "skb_priority(%lli/%lli)%n", &priority,
1432 &priority_mask, &n) > 0 && n > 0) {
1433 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1434 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, priority_mask);
1435 return n;
1436 } else if (sscanf(s, "skb_priority(%lli)%n",
1437 &priority, &n) > 0 && n > 0) {
1438 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1439 if (mask) {
1440 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, UINT32_MAX);
1441 }
1442 return n;
1443 }
1444 }
1445
1446 {
1447 unsigned long long int mark;
1448 unsigned long long int mark_mask;
1449 int n = -1;
1450
1451 if (mask && sscanf(s, "skb_mark(%lli/%lli)%n", &mark,
1452 &mark_mask, &n) > 0 && n > 0) {
1453 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1454 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, mark_mask);
1455 return n;
1456 } else if (sscanf(s, "skb_mark(%lli)%n", &mark, &n) > 0 && n > 0) {
1457 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1458 if (mask) {
1459 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, UINT32_MAX);
1460 }
1461 return n;
1462 }
1463 }
1464
1465 {
1466 char tun_id_s[32];
1467 int tos, tos_mask, ttl, ttl_mask;
1468 struct flow_tnl tun_key, tun_key_mask;
1469 unsigned long long tun_id_mask;
1470 int n = -1;
1471
1472 if (mask && sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF]/%llx,"
1473 "src="IP_SCAN_FMT"/"IP_SCAN_FMT",dst="IP_SCAN_FMT
1474 "/"IP_SCAN_FMT",tos=%i/%i,ttl=%i/%i,flags%n",
1475 tun_id_s, &tun_id_mask,
1476 IP_SCAN_ARGS(&tun_key.ip_src),
1477 IP_SCAN_ARGS(&tun_key_mask.ip_src),
1478 IP_SCAN_ARGS(&tun_key.ip_dst),
1479 IP_SCAN_ARGS(&tun_key_mask.ip_dst),
1480 &tos, &tos_mask, &ttl, &ttl_mask,
1481 &n) > 0 && n > 0) {
1482 int res;
1483 uint32_t flags;
1484
1485 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1486 tun_key_mask.tun_id = htonll(tun_id_mask);
1487 tun_key.ip_tos = tos;
1488 tun_key_mask.ip_tos = tos_mask;
1489 tun_key.ip_ttl = ttl;
1490 tun_key_mask.ip_ttl = ttl_mask;
1491 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1492 tun_key.flags = flags;
1493 tun_key_mask.flags = UINT16_MAX;
1494
1495 if (res < 0) {
1496 return res;
1497 }
1498 n += res;
1499 if (s[n] != ')') {
1500 return -EINVAL;
1501 }
1502 n++;
1503 tun_key_to_attr(key, &tun_key);
1504 if (mask) {
1505 tun_key_to_attr(mask, &tun_key_mask);
1506 }
1507 return n;
1508 } else if (sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
1509 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1510 ",tos=%i,ttl=%i,flags%n", tun_id_s,
1511 IP_SCAN_ARGS(&tun_key.ip_src),
1512 IP_SCAN_ARGS(&tun_key.ip_dst), &tos, &ttl,
1513 &n) > 0 && n > 0) {
1514 int res;
1515 uint32_t flags;
1516
1517 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1518 tun_key.ip_tos = tos;
1519 tun_key.ip_ttl = ttl;
1520 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1521 tun_key.flags = flags;
1522
1523 if (res < 0) {
1524 return res;
1525 }
1526 n += res;
1527 if (s[n] != ')') {
1528 return -EINVAL;
1529 }
1530 n++;
1531 tun_key_to_attr(key, &tun_key);
1532
1533 if (mask) {
1534 memset(&tun_key, 0xff, sizeof tun_key);
1535 tun_key_to_attr(mask, &tun_key);
1536 }
1537 return n;
1538 }
1539 }
1540
1541 {
1542 unsigned long long int in_port;
1543 unsigned long long int in_port_mask;
1544 int n = -1;
1545
1546 if (mask && sscanf(s, "in_port(%lli/%lli)%n", &in_port,
1547 &in_port_mask, &n) > 0 && n > 0) {
1548 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1549 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, in_port_mask);
1550 return n;
1551 } else if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1552 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1553 if (mask) {
1554 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1555 }
1556 return n;
1557 }
1558 }
1559
1560
1561 if (port_names && !strncmp(s, "in_port(", 8)) {
1562 const char *name;
1563 const struct simap_node *node;
1564 int name_len;
1565
1566 name = s + 8;
1567 name_len = strcspn(s, ")");
1568 node = simap_find_len(port_names, name, name_len);
1569 if (node) {
1570 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1571
1572 if (mask) {
1573 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1574 }
1575 return 8 + name_len + 1;
1576 }
1577 }
1578
1579 {
1580 struct ovs_key_ethernet eth_key;
1581 struct ovs_key_ethernet eth_key_mask;
1582 int n = -1;
1583
1584 if (mask && sscanf(s,
1585 "eth(src="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
1586 "dst="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
1587 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1588 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_src),
1589 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst),
1590 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_dst), &n) > 0 && n > 0) {
1591
1592 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1593 &eth_key, sizeof eth_key);
1594 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1595 &eth_key_mask, sizeof eth_key_mask);
1596 return n;
1597 } else if (sscanf(s,
1598 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1599 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1600 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1601 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1602 &eth_key, sizeof eth_key);
1603
1604 if (mask) {
1605 memset(&eth_key, 0xff, sizeof eth_key);
1606 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1607 &eth_key, sizeof eth_key);
1608 }
1609 return n;
1610 }
1611 }
1612
1613 {
1614 uint16_t vid, vid_mask;
1615 int pcp, pcp_mask;
1616 int cfi, cfi_mask;
1617 int n = -1;
1618
1619 if (mask && (sscanf(s, "vlan(vid=%"SCNi16"/%"SCNi16",pcp=%i/%i)%n",
1620 &vid, &vid_mask, &pcp, &pcp_mask, &n) > 0 && n > 0)) {
1621 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1622 htons((vid << VLAN_VID_SHIFT) |
1623 (pcp << VLAN_PCP_SHIFT) |
1624 VLAN_CFI));
1625 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1626 htons((vid_mask << VLAN_VID_SHIFT) |
1627 (pcp_mask << VLAN_PCP_SHIFT) |
1628 (1 << VLAN_CFI_SHIFT)));
1629 return n;
1630 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n",
1631 &vid, &pcp, &n) > 0 && n > 0)) {
1632 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1633 htons((vid << VLAN_VID_SHIFT) |
1634 (pcp << VLAN_PCP_SHIFT) |
1635 VLAN_CFI));
1636 if (mask) {
1637 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, htons(UINT16_MAX));
1638 }
1639 return n;
1640 } else if (mask && (sscanf(s, "vlan(vid=%"SCNi16"/%"SCNi16",pcp=%i/%i,cfi=%i/%i)%n",
1641 &vid, &vid_mask, &pcp, &pcp_mask, &cfi, &cfi_mask, &n) > 0 && n > 0)) {
1642 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1643 htons((vid << VLAN_VID_SHIFT) |
1644 (pcp << VLAN_PCP_SHIFT) |
1645 (cfi ? VLAN_CFI : 0)));
1646 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1647 htons((vid_mask << VLAN_VID_SHIFT) |
1648 (pcp_mask << VLAN_PCP_SHIFT) |
1649 (cfi_mask << VLAN_CFI_SHIFT)));
1650 return n;
1651 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1652 &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
1653 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1654 htons((vid << VLAN_VID_SHIFT) |
1655 (pcp << VLAN_PCP_SHIFT) |
1656 (cfi ? VLAN_CFI : 0)));
1657 if (mask) {
1658 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, htons(UINT16_MAX));
1659 }
1660 return n;
1661 }
1662 }
1663
1664 {
1665 int eth_type;
1666 int eth_type_mask;
1667 int n = -1;
1668
1669 if (mask && sscanf(s, "eth_type(%i/%i)%n",
1670 &eth_type, &eth_type_mask, &n) > 0 && n > 0) {
1671 if (eth_type != 0) {
1672 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1673 }
1674 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type_mask));
1675 return n;
1676 } else if (sscanf(s, "eth_type(%i)%n", &eth_type, &n) > 0 && n > 0) {
1677 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1678 if (mask) {
1679 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE,
1680 htons(UINT16_MAX));
1681 }
1682 return n;
1683 }
1684 }
1685
1686 {
1687 int label, tc, ttl, bos;
1688 int label_mask, tc_mask, ttl_mask, bos_mask;
1689 int n = -1;
1690
1691 if (mask && sscanf(s, "mpls(label=%"SCNi32"/%"SCNi32",tc=%i/%i,ttl=%i/%i,bos=%i/%i)%n",
1692 &label, &label_mask, &tc, &tc_mask, &ttl, &ttl_mask, &bos, &bos_mask, &n) > 0 && n > 0) {
1693 struct ovs_key_mpls *mpls, *mpls_mask;
1694
1695 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1696 sizeof *mpls);
1697 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1698
1699 mpls_mask = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1700 sizeof *mpls_mask);
1701 mpls_mask->mpls_lse = mpls_lse_from_components(
1702 label_mask, tc_mask, ttl_mask, bos_mask);
1703 return n;
1704 } else if (sscanf(s, "mpls(label=%"SCNi32",tc=%i,ttl=%i,bos=%i)%n",
1705 &label, &tc, &ttl, &bos, &n) > 0 &&
1706 n > 0) {
1707 struct ovs_key_mpls *mpls;
1708
1709 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1710 sizeof *mpls);
1711 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1712 if (mask) {
1713 mpls = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1714 sizeof *mpls);
1715 mpls->mpls_lse = htonl(UINT32_MAX);
1716 }
1717 return n;
1718 }
1719 }
1720
1721
1722 {
1723 ovs_be32 ipv4_src, ipv4_src_mask;
1724 ovs_be32 ipv4_dst, ipv4_dst_mask;
1725 int ipv4_proto, ipv4_proto_mask;
1726 int ipv4_tos, ipv4_tos_mask;
1727 int ipv4_ttl, ipv4_ttl_mask;
1728 char frag[8];
1729 int ipv4_frag_mask;
1730 enum ovs_frag_type ipv4_frag;
1731 int n = -1;
1732
1733 if (mask && sscanf(s, "ipv4(src="IP_SCAN_FMT"/"IP_SCAN_FMT","
1734 "dst="IP_SCAN_FMT"/"IP_SCAN_FMT","
1735 "proto=%i/%i,tos=%i/%i,ttl=%i/%i,"
1736 "frag=%7[a-z]/%i)%n",
1737 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_src_mask),
1738 IP_SCAN_ARGS(&ipv4_dst), IP_SCAN_ARGS(&ipv4_dst_mask),
1739 &ipv4_proto, &ipv4_proto_mask,
1740 &ipv4_tos, &ipv4_tos_mask, &ipv4_ttl, &ipv4_ttl_mask,
1741 frag, &ipv4_frag_mask, &n) > 0
1742 && n > 0
1743 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1744 struct ovs_key_ipv4 ipv4_key;
1745 struct ovs_key_ipv4 ipv4_mask;
1746
1747 ipv4_key.ipv4_src = ipv4_src;
1748 ipv4_key.ipv4_dst = ipv4_dst;
1749 ipv4_key.ipv4_proto = ipv4_proto;
1750 ipv4_key.ipv4_tos = ipv4_tos;
1751 ipv4_key.ipv4_ttl = ipv4_ttl;
1752 ipv4_key.ipv4_frag = ipv4_frag;
1753 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1754 &ipv4_key, sizeof ipv4_key);
1755
1756 ipv4_mask.ipv4_src = ipv4_src_mask;
1757 ipv4_mask.ipv4_dst = ipv4_dst_mask;
1758 ipv4_mask.ipv4_proto = ipv4_proto_mask;
1759 ipv4_mask.ipv4_tos = ipv4_tos_mask;
1760 ipv4_mask.ipv4_ttl = ipv4_ttl_mask;
1761 ipv4_mask.ipv4_frag = ipv4_frag_mask;
1762 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1763 &ipv4_mask, sizeof ipv4_mask);
1764 return n;
1765 } else if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1766 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1767 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1768 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1769 && n > 0
1770 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1771 struct ovs_key_ipv4 ipv4_key;
1772
1773 ipv4_key.ipv4_src = ipv4_src;
1774 ipv4_key.ipv4_dst = ipv4_dst;
1775 ipv4_key.ipv4_proto = ipv4_proto;
1776 ipv4_key.ipv4_tos = ipv4_tos;
1777 ipv4_key.ipv4_ttl = ipv4_ttl;
1778 ipv4_key.ipv4_frag = ipv4_frag;
1779 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1780 &ipv4_key, sizeof ipv4_key);
1781
1782 if (mask) {
1783 memset(&ipv4_key, 0xff, sizeof ipv4_key);
1784 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1785 &ipv4_key, sizeof ipv4_key);
1786 }
1787 return n;
1788 }
1789 }
1790
1791 {
1792 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1793 char ipv6_src_mask_s[IPV6_SCAN_LEN + 1];
1794 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1795 char ipv6_dst_mask_s[IPV6_SCAN_LEN + 1];
1796 int ipv6_label, ipv6_label_mask;
1797 int ipv6_proto, ipv6_proto_mask;
1798 int ipv6_tclass, ipv6_tclass_mask;
1799 int ipv6_hlimit, ipv6_hlimit_mask;
1800 char frag[8];
1801 enum ovs_frag_type ipv6_frag;
1802 int ipv6_frag_mask;
1803 int n = -1;
1804
1805 if (mask && sscanf(s, "ipv6(src="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT",dst="
1806 IPV6_SCAN_FMT"/"IPV6_SCAN_FMT","
1807 "label=%i/%i,proto=%i/%i,tclass=%i/%i,"
1808 "hlimit=%i/%i,frag=%7[a-z]/%i)%n",
1809 ipv6_src_s, ipv6_src_mask_s, ipv6_dst_s, ipv6_dst_mask_s,
1810 &ipv6_label, &ipv6_label_mask, &ipv6_proto,
1811 &ipv6_proto_mask, &ipv6_tclass, &ipv6_tclass_mask,
1812 &ipv6_hlimit, &ipv6_hlimit_mask, frag,
1813 &ipv6_frag_mask, &n) > 0
1814 && n > 0
1815 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1816 struct ovs_key_ipv6 ipv6_key;
1817 struct ovs_key_ipv6 ipv6_mask;
1818
1819 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1820 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1 ||
1821 inet_pton(AF_INET6, ipv6_src_mask_s, &ipv6_mask.ipv6_src) != 1 ||
1822 inet_pton(AF_INET6, ipv6_dst_mask_s, &ipv6_mask.ipv6_dst) != 1) {
1823 return -EINVAL;
1824 }
1825
1826 ipv6_key.ipv6_label = htonl(ipv6_label);
1827 ipv6_key.ipv6_proto = ipv6_proto;
1828 ipv6_key.ipv6_tclass = ipv6_tclass;
1829 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1830 ipv6_key.ipv6_frag = ipv6_frag;
1831 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1832 &ipv6_key, sizeof ipv6_key);
1833
1834 ipv6_mask.ipv6_label = htonl(ipv6_label_mask);
1835 ipv6_mask.ipv6_proto = ipv6_proto_mask;
1836 ipv6_mask.ipv6_tclass = ipv6_tclass_mask;
1837 ipv6_mask.ipv6_hlimit = ipv6_hlimit_mask;
1838 ipv6_mask.ipv6_frag = ipv6_frag_mask;
1839 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1840 &ipv6_mask, sizeof ipv6_mask);
1841 return n;
1842 } else if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1843 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1844 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1845 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1846 && n > 0
1847 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1848 struct ovs_key_ipv6 ipv6_key;
1849
1850 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1851 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1852 return -EINVAL;
1853 }
1854 ipv6_key.ipv6_label = htonl(ipv6_label);
1855 ipv6_key.ipv6_proto = ipv6_proto;
1856 ipv6_key.ipv6_tclass = ipv6_tclass;
1857 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1858 ipv6_key.ipv6_frag = ipv6_frag;
1859 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1860 &ipv6_key, sizeof ipv6_key);
1861
1862 if (mask) {
1863 memset(&ipv6_key, 0xff, sizeof ipv6_key);
1864 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1865 &ipv6_key, sizeof ipv6_key);
1866 }
1867 return n;
1868 }
1869 }
1870
1871 {
1872 int tcp_src;
1873 int tcp_dst;
1874 int tcp_src_mask;
1875 int tcp_dst_mask;
1876 int n = -1;
1877
1878 if (mask && sscanf(s, "tcp(src=%i/%i,dst=%i/%i)%n",
1879 &tcp_src, &tcp_src_mask, &tcp_dst, &tcp_dst_mask, &n) > 0
1880 && n > 0) {
1881 struct ovs_key_tcp tcp_key;
1882 struct ovs_key_tcp tcp_mask;
1883
1884 tcp_key.tcp_src = htons(tcp_src);
1885 tcp_key.tcp_dst = htons(tcp_dst);
1886 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1887
1888 tcp_mask.tcp_src = htons(tcp_src_mask);
1889 tcp_mask.tcp_dst = htons(tcp_dst_mask);
1890 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
1891 &tcp_mask, sizeof tcp_mask);
1892 return n;
1893 } else if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
1894 && n > 0) {
1895 struct ovs_key_tcp tcp_key;
1896
1897 tcp_key.tcp_src = htons(tcp_src);
1898 tcp_key.tcp_dst = htons(tcp_dst);
1899 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1900
1901 if (mask) {
1902 memset(&tcp_key, 0xff, sizeof tcp_key);
1903 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
1904 &tcp_key, sizeof tcp_key);
1905 }
1906 return n;
1907 }
1908 }
1909
1910 {
1911 int udp_src;
1912 int udp_dst;
1913 int udp_src_mask;
1914 int udp_dst_mask;
1915 int n = -1;
1916
1917 if (mask && sscanf(s, "udp(src=%i/%i,dst=%i/%i)%n",
1918 &udp_src, &udp_src_mask,
1919 &udp_dst, &udp_dst_mask, &n) > 0 && n > 0) {
1920 struct ovs_key_udp udp_key;
1921 struct ovs_key_udp udp_mask;
1922
1923 udp_key.udp_src = htons(udp_src);
1924 udp_key.udp_dst = htons(udp_dst);
1925 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1926
1927 udp_mask.udp_src = htons(udp_src_mask);
1928 udp_mask.udp_dst = htons(udp_dst_mask);
1929 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP,
1930 &udp_mask, sizeof udp_mask);
1931 return n;
1932 }
1933 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
1934 && n > 0) {
1935 struct ovs_key_udp udp_key;
1936
1937 udp_key.udp_src = htons(udp_src);
1938 udp_key.udp_dst = htons(udp_dst);
1939 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1940
1941 if (mask) {
1942 memset(&udp_key, 0xff, sizeof udp_key);
1943 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1944 }
1945 return n;
1946 }
1947 }
1948
1949 {
1950 int icmp_type;
1951 int icmp_code;
1952 int icmp_type_mask;
1953 int icmp_code_mask;
1954 int n = -1;
1955
1956 if (mask && sscanf(s, "icmp(type=%i/%i,code=%i/%i)%n",
1957 &icmp_type, &icmp_type_mask,
1958 &icmp_code, &icmp_code_mask, &n) > 0 && n > 0) {
1959 struct ovs_key_icmp icmp_key;
1960 struct ovs_key_icmp icmp_mask;
1961
1962 icmp_key.icmp_type = icmp_type;
1963 icmp_key.icmp_code = icmp_code;
1964 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1965 &icmp_key, sizeof icmp_key);
1966
1967 icmp_mask.icmp_type = icmp_type_mask;
1968 icmp_mask.icmp_code = icmp_code_mask;
1969 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP,
1970 &icmp_mask, sizeof icmp_mask);
1971 return n;
1972 } else if (sscanf(s, "icmp(type=%i,code=%i)%n",
1973 &icmp_type, &icmp_code, &n) > 0
1974 && n > 0) {
1975 struct ovs_key_icmp icmp_key;
1976
1977 icmp_key.icmp_type = icmp_type;
1978 icmp_key.icmp_code = icmp_code;
1979 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
1980 &icmp_key, sizeof icmp_key);
1981 if (mask) {
1982 memset(&icmp_key, 0xff, sizeof icmp_key);
1983 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP, &icmp_key,
1984 sizeof icmp_key);
1985 }
1986 return n;
1987 }
1988 }
1989
1990 {
1991 struct ovs_key_icmpv6 icmpv6_key;
1992 struct ovs_key_icmpv6 icmpv6_mask;
1993 int icmpv6_type_mask;
1994 int icmpv6_code_mask;
1995 int n = -1;
1996
1997 if (mask && sscanf(s, "icmpv6(type=%"SCNi8"/%i,code=%"SCNi8"/%i)%n",
1998 &icmpv6_key.icmpv6_type, &icmpv6_type_mask,
1999 &icmpv6_key.icmpv6_code, &icmpv6_code_mask, &n) > 0
2000 && n > 0) {
2001 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2002 &icmpv6_key, sizeof icmpv6_key);
2003
2004 icmpv6_mask.icmpv6_type = icmpv6_type_mask;
2005 icmpv6_mask.icmpv6_code = icmpv6_code_mask;
2006 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_mask,
2007 sizeof icmpv6_mask);
2008 return n;
2009 } else if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
2010 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
2011 && n > 0) {
2012 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2013 &icmpv6_key, sizeof icmpv6_key);
2014
2015 if (mask) {
2016 memset(&icmpv6_key, 0xff, sizeof icmpv6_key);
2017 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_key,
2018 sizeof icmpv6_key);
2019 }
2020 return n;
2021 }
2022 }
2023
2024 {
2025 ovs_be32 arp_sip, arp_sip_mask;
2026 ovs_be32 arp_tip, arp_tip_mask;
2027 int arp_op, arp_op_mask;
2028 uint8_t arp_sha[ETH_ADDR_LEN];
2029 uint8_t arp_sha_mask[ETH_ADDR_LEN];
2030 uint8_t arp_tha[ETH_ADDR_LEN];
2031 uint8_t arp_tha_mask[ETH_ADDR_LEN];
2032 int n = -1;
2033
2034 if (mask && sscanf(s, "arp(sip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2035 "tip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2036 "op=%i/%i,sha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2037 "tha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2038 IP_SCAN_ARGS(&arp_sip), IP_SCAN_ARGS(&arp_sip_mask),
2039 IP_SCAN_ARGS(&arp_tip), IP_SCAN_ARGS(&arp_tip_mask),
2040 &arp_op, &arp_op_mask,
2041 ETH_ADDR_SCAN_ARGS(arp_sha),
2042 ETH_ADDR_SCAN_ARGS(arp_sha_mask),
2043 ETH_ADDR_SCAN_ARGS(arp_tha),
2044 ETH_ADDR_SCAN_ARGS(arp_tha_mask), &n) > 0 && n > 0) {
2045 struct ovs_key_arp arp_key;
2046 struct ovs_key_arp arp_mask;
2047
2048 memset(&arp_key, 0, sizeof arp_key);
2049 arp_key.arp_sip = arp_sip;
2050 arp_key.arp_tip = arp_tip;
2051 arp_key.arp_op = htons(arp_op);
2052 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
2053 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
2054 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2055
2056 arp_mask.arp_sip = arp_sip_mask;
2057 arp_mask.arp_tip = arp_tip_mask;
2058 arp_mask.arp_op = htons(arp_op_mask);
2059 memcpy(arp_mask.arp_sha, arp_sha_mask, ETH_ADDR_LEN);
2060 memcpy(arp_mask.arp_tha, arp_tha_mask, ETH_ADDR_LEN);
2061 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2062 &arp_mask, sizeof arp_mask);
2063 return n;
2064 } else if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
2065 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
2066 IP_SCAN_ARGS(&arp_sip),
2067 IP_SCAN_ARGS(&arp_tip),
2068 &arp_op,
2069 ETH_ADDR_SCAN_ARGS(arp_sha),
2070 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
2071 struct ovs_key_arp arp_key;
2072
2073 memset(&arp_key, 0, sizeof arp_key);
2074 arp_key.arp_sip = arp_sip;
2075 arp_key.arp_tip = arp_tip;
2076 arp_key.arp_op = htons(arp_op);
2077 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
2078 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
2079 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2080
2081 if (mask) {
2082 memset(&arp_key, 0xff, sizeof arp_key);
2083 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2084 &arp_key, sizeof arp_key);
2085 }
2086 return n;
2087 }
2088 }
2089
2090 {
2091 char nd_target_s[IPV6_SCAN_LEN + 1];
2092 char nd_target_mask_s[IPV6_SCAN_LEN + 1];
2093 uint8_t nd_sll[ETH_ADDR_LEN];
2094 uint8_t nd_sll_mask[ETH_ADDR_LEN];
2095 uint8_t nd_tll[ETH_ADDR_LEN];
2096 uint8_t nd_tll_mask[ETH_ADDR_LEN];
2097 int n = -1;
2098
2099 memset(&nd_target_mask_s[0], 0xff, sizeof nd_target_s);
2100 memset(&nd_sll_mask[0], 0xff, sizeof nd_sll);
2101 memset(&nd_tll_mask [0], 0xff, sizeof nd_tll);
2102
2103 if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT")%n",
2104 nd_target_s, nd_target_mask_s, &n) > 0 && n > 0) {
2105 put_nd_key(n, nd_target_s, NULL, NULL, key);
2106 put_nd_key(n, nd_target_mask_s, NULL, NULL, mask);
2107 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
2108 nd_target_s, &n) > 0 && n > 0) {
2109 put_nd_key(n, nd_target_s, NULL, NULL, key);
2110 if (mask) {
2111 put_nd_key(n, nd_target_mask_s, NULL, NULL, mask);
2112 }
2113 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2114 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2115 nd_target_s, nd_target_mask_s,
2116 ETH_ADDR_SCAN_ARGS(nd_sll),
2117 ETH_ADDR_SCAN_ARGS(nd_sll_mask), &n) > 0 && n > 0) {
2118 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2119 put_nd_key(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2120 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
2121 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
2122 && n > 0) {
2123 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2124 if (mask) {
2125 put_nd_key(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2126 }
2127 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2128 ",tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2129 nd_target_s, nd_target_mask_s,
2130 ETH_ADDR_SCAN_ARGS(nd_tll),
2131 ETH_ADDR_SCAN_ARGS(nd_tll_mask), &n) > 0 && n > 0) {
2132 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2133 put_nd_key(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2134 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
2135 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
2136 && n > 0) {
2137 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2138 if (mask) {
2139 put_nd_key(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2140 }
2141 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2142 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2143 "tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2144 nd_target_s, nd_target_mask_s,
2145 ETH_ADDR_SCAN_ARGS(nd_sll), ETH_ADDR_SCAN_ARGS(nd_sll_mask),
2146 ETH_ADDR_SCAN_ARGS(nd_tll), ETH_ADDR_SCAN_ARGS(nd_tll_mask),
2147 &n) > 0
2148 && n > 0) {
2149 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2150 put_nd_key(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2151 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
2152 "tll="ETH_ADDR_SCAN_FMT")%n",
2153 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
2154 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
2155 && n > 0) {
2156 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2157 if (mask) {
2158 put_nd_key(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2159 }
2160 }
2161
2162 if (n != -1)
2163 return n;
2164
2165 }
2166
2167 if (!strncmp(s, "encap(", 6)) {
2168 const char *start = s;
2169 size_t encap, encap_mask = 0;
2170
2171 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
2172 if (mask) {
2173 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
2174 }
2175
2176 s += 6;
2177 for (;;) {
2178 int retval;
2179
2180 s += strspn(s, ", \t\r\n");
2181 if (!*s) {
2182 return -EINVAL;
2183 } else if (*s == ')') {
2184 break;
2185 }
2186
2187 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2188 if (retval < 0) {
2189 return retval;
2190 }
2191 s += retval;
2192 }
2193 s++;
2194
2195 nl_msg_end_nested(key, encap);
2196 if (mask) {
2197 nl_msg_end_nested(mask, encap_mask);
2198 }
2199
2200 return s - start;
2201 }
2202
2203 return -EINVAL;
2204 }
2205
2206 /* Parses the string representation of a datapath flow key, in the
2207 * format output by odp_flow_key_format(). Returns 0 if successful,
2208 * otherwise a positive errno value. On success, the flow key is
2209 * appended to 'key' as a series of Netlink attributes. On failure, no
2210 * data is appended to 'key'. Either way, 'key''s data might be
2211 * reallocated.
2212 *
2213 * If 'port_names' is nonnull, it points to an simap that maps from a port name
2214 * to a port number. (Port names may be used instead of port numbers in
2215 * in_port.)
2216 *
2217 * On success, the attributes appended to 'key' are individually syntactically
2218 * valid, but they may not be valid as a sequence. 'key' might, for example,
2219 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
2220 int
2221 odp_flow_from_string(const char *s, const struct simap *port_names,
2222 struct ofpbuf *key, struct ofpbuf *mask)
2223 {
2224 const size_t old_size = key->size;
2225 for (;;) {
2226 int retval;
2227
2228 s += strspn(s, delimiters);
2229 if (!*s) {
2230 return 0;
2231 }
2232
2233 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2234 if (retval < 0) {
2235 key->size = old_size;
2236 return -retval;
2237 }
2238 s += retval;
2239 }
2240
2241 return 0;
2242 }
2243
2244 static uint8_t
2245 ovs_to_odp_frag(uint8_t nw_frag)
2246 {
2247 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
2248 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
2249 : OVS_FRAG_TYPE_LATER);
2250 }
2251
2252 static void
2253 odp_flow_key_from_flow__(struct ofpbuf *buf, const struct flow *data,
2254 const struct flow *flow, odp_port_t odp_in_port)
2255 {
2256 bool is_mask;
2257 struct ovs_key_ethernet *eth_key;
2258 size_t encap;
2259
2260 /* We assume that if 'data' and 'flow' are not the same, we should
2261 * treat 'data' as a mask. */
2262 is_mask = (data != flow);
2263
2264 if (flow->skb_priority) {
2265 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
2266 }
2267
2268 if (flow->tunnel.ip_dst) {
2269 tun_key_to_attr(buf, &data->tunnel);
2270 }
2271
2272 if (flow->skb_mark) {
2273 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->skb_mark);
2274 }
2275
2276 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
2277 * is not the magical value "ODPP_NONE". */
2278 if (is_mask || odp_in_port != ODPP_NONE) {
2279 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
2280 }
2281
2282 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
2283 sizeof *eth_key);
2284 memcpy(eth_key->eth_src, data->dl_src, ETH_ADDR_LEN);
2285 memcpy(eth_key->eth_dst, data->dl_dst, ETH_ADDR_LEN);
2286
2287 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
2288 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
2289 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
2290 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
2291 if (flow->vlan_tci == htons(0)) {
2292 goto unencap;
2293 }
2294 } else {
2295 encap = 0;
2296 }
2297
2298 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2299 /* For backwards compatibility with kernels that don't support
2300 * wildcarding, the following convention is used to encode the
2301 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
2302 *
2303 * key mask matches
2304 * -------- -------- -------
2305 * >0x5ff 0xffff Specified Ethernet II Ethertype.
2306 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
2307 * <none> 0xffff Any non-Ethernet II frame (except valid
2308 * 802.3 SNAP packet with valid eth_type).
2309 */
2310 if (is_mask) {
2311 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2312 }
2313 goto unencap;
2314 }
2315
2316 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2317
2318 if (flow->dl_type == htons(ETH_TYPE_IP)) {
2319 struct ovs_key_ipv4 *ipv4_key;
2320
2321 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
2322 sizeof *ipv4_key);
2323 ipv4_key->ipv4_src = data->nw_src;
2324 ipv4_key->ipv4_dst = data->nw_dst;
2325 ipv4_key->ipv4_proto = data->nw_proto;
2326 ipv4_key->ipv4_tos = data->nw_tos;
2327 ipv4_key->ipv4_ttl = data->nw_ttl;
2328 ipv4_key->ipv4_frag = ovs_to_odp_frag(data->nw_frag);
2329 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2330 struct ovs_key_ipv6 *ipv6_key;
2331
2332 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
2333 sizeof *ipv6_key);
2334 memcpy(ipv6_key->ipv6_src, &data->ipv6_src, sizeof ipv6_key->ipv6_src);
2335 memcpy(ipv6_key->ipv6_dst, &data->ipv6_dst, sizeof ipv6_key->ipv6_dst);
2336 ipv6_key->ipv6_label = data->ipv6_label;
2337 ipv6_key->ipv6_proto = data->nw_proto;
2338 ipv6_key->ipv6_tclass = data->nw_tos;
2339 ipv6_key->ipv6_hlimit = data->nw_ttl;
2340 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
2341 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2342 flow->dl_type == htons(ETH_TYPE_RARP)) {
2343 struct ovs_key_arp *arp_key;
2344
2345 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
2346 sizeof *arp_key);
2347 memset(arp_key, 0, sizeof *arp_key);
2348 arp_key->arp_sip = data->nw_src;
2349 arp_key->arp_tip = data->nw_dst;
2350 arp_key->arp_op = htons(data->nw_proto);
2351 memcpy(arp_key->arp_sha, data->arp_sha, ETH_ADDR_LEN);
2352 memcpy(arp_key->arp_tha, data->arp_tha, ETH_ADDR_LEN);
2353 }
2354
2355 if (flow->mpls_depth) {
2356 struct ovs_key_mpls *mpls_key;
2357
2358 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
2359 sizeof *mpls_key);
2360 mpls_key->mpls_lse = data->mpls_lse;
2361 }
2362
2363 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2364 if (flow->nw_proto == IPPROTO_TCP) {
2365 struct ovs_key_tcp *tcp_key;
2366
2367 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
2368 sizeof *tcp_key);
2369 tcp_key->tcp_src = data->tp_src;
2370 tcp_key->tcp_dst = data->tp_dst;
2371 } else if (flow->nw_proto == IPPROTO_UDP) {
2372 struct ovs_key_udp *udp_key;
2373
2374 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
2375 sizeof *udp_key);
2376 udp_key->udp_src = data->tp_src;
2377 udp_key->udp_dst = data->tp_dst;
2378 } else if (flow->dl_type == htons(ETH_TYPE_IP)
2379 && flow->nw_proto == IPPROTO_ICMP) {
2380 struct ovs_key_icmp *icmp_key;
2381
2382 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
2383 sizeof *icmp_key);
2384 icmp_key->icmp_type = ntohs(data->tp_src);
2385 icmp_key->icmp_code = ntohs(data->tp_dst);
2386 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
2387 && flow->nw_proto == IPPROTO_ICMPV6) {
2388 struct ovs_key_icmpv6 *icmpv6_key;
2389
2390 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
2391 sizeof *icmpv6_key);
2392 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
2393 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
2394
2395 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
2396 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
2397 struct ovs_key_nd *nd_key;
2398
2399 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
2400 sizeof *nd_key);
2401 memcpy(nd_key->nd_target, &data->nd_target,
2402 sizeof nd_key->nd_target);
2403 memcpy(nd_key->nd_sll, data->arp_sha, ETH_ADDR_LEN);
2404 memcpy(nd_key->nd_tll, data->arp_tha, ETH_ADDR_LEN);
2405 }
2406 }
2407 }
2408
2409 unencap:
2410 if (encap) {
2411 nl_msg_end_nested(buf, encap);
2412 }
2413 }
2414
2415 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
2416 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
2417 * number rather than a datapath port number). Instead, if 'odp_in_port'
2418 * is anything other than ODPP_NONE, it is included in 'buf' as the input
2419 * port.
2420 *
2421 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2422 * capable of being expanded to allow for that much space. */
2423 void
2424 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
2425 odp_port_t odp_in_port)
2426 {
2427 odp_flow_key_from_flow__(buf, flow, flow, odp_in_port);
2428 }
2429
2430 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
2431 * 'buf'. 'flow' is used as a template to determine how to interpret
2432 * 'mask'. For example, the 'dl_type' of 'mask' describes the mask, but
2433 * it doesn't indicate whether the other fields should be interpreted as
2434 * ARP, IPv4, IPv6, etc.
2435 *
2436 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2437 * capable of being expanded to allow for that much space. */
2438 void
2439 odp_flow_key_from_mask(struct ofpbuf *buf, const struct flow *mask,
2440 const struct flow *flow, uint32_t odp_in_port_mask)
2441 {
2442 odp_flow_key_from_flow__(buf, mask, flow, u32_to_odp(odp_in_port_mask));
2443 }
2444
2445 uint32_t
2446 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
2447 {
2448 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
2449 return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0);
2450 }
2451
2452 static void
2453 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
2454 uint64_t attrs, int out_of_range_attr,
2455 const struct nlattr *key, size_t key_len)
2456 {
2457 struct ds s;
2458 int i;
2459
2460 if (VLOG_DROP_DBG(rl)) {
2461 return;
2462 }
2463
2464 ds_init(&s);
2465 for (i = 0; i < 64; i++) {
2466 if (attrs & (UINT64_C(1) << i)) {
2467 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2468
2469 ds_put_format(&s, " %s",
2470 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
2471 }
2472 }
2473 if (out_of_range_attr) {
2474 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
2475 }
2476
2477 ds_put_cstr(&s, ": ");
2478 odp_flow_key_format(key, key_len, &s);
2479
2480 VLOG_DBG("%s:%s", title, ds_cstr(&s));
2481 ds_destroy(&s);
2482 }
2483
2484 static bool
2485 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
2486 {
2487 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2488
2489 if (odp_frag > OVS_FRAG_TYPE_LATER) {
2490 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
2491 return false;
2492 }
2493
2494 if (odp_frag != OVS_FRAG_TYPE_NONE) {
2495 flow->nw_frag |= FLOW_NW_FRAG_ANY;
2496 if (odp_frag == OVS_FRAG_TYPE_LATER) {
2497 flow->nw_frag |= FLOW_NW_FRAG_LATER;
2498 }
2499 }
2500 return true;
2501 }
2502
2503 static bool
2504 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
2505 const struct nlattr *attrs[], uint64_t *present_attrsp,
2506 int *out_of_range_attrp)
2507 {
2508 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2509 const struct nlattr *nla;
2510 uint64_t present_attrs;
2511 size_t left;
2512
2513 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
2514 present_attrs = 0;
2515 *out_of_range_attrp = 0;
2516 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2517 uint16_t type = nl_attr_type(nla);
2518 size_t len = nl_attr_get_size(nla);
2519 int expected_len = odp_flow_key_attr_len(type);
2520
2521 if (len != expected_len && expected_len >= 0) {
2522 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2523
2524 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
2525 "length %d", ovs_key_attr_to_string(type, namebuf,
2526 sizeof namebuf),
2527 len, expected_len);
2528 return false;
2529 }
2530
2531 if (type > OVS_KEY_ATTR_MAX) {
2532 *out_of_range_attrp = type;
2533 } else {
2534 if (present_attrs & (UINT64_C(1) << type)) {
2535 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2536
2537 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
2538 ovs_key_attr_to_string(type,
2539 namebuf, sizeof namebuf));
2540 return false;
2541 }
2542
2543 present_attrs |= UINT64_C(1) << type;
2544 attrs[type] = nla;
2545 }
2546 }
2547 if (left) {
2548 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
2549 return false;
2550 }
2551
2552 *present_attrsp = present_attrs;
2553 return true;
2554 }
2555
2556 static enum odp_key_fitness
2557 check_expectations(uint64_t present_attrs, int out_of_range_attr,
2558 uint64_t expected_attrs,
2559 const struct nlattr *key, size_t key_len)
2560 {
2561 uint64_t missing_attrs;
2562 uint64_t extra_attrs;
2563
2564 missing_attrs = expected_attrs & ~present_attrs;
2565 if (missing_attrs) {
2566 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2567 log_odp_key_attributes(&rl, "expected but not present",
2568 missing_attrs, 0, key, key_len);
2569 return ODP_FIT_TOO_LITTLE;
2570 }
2571
2572 extra_attrs = present_attrs & ~expected_attrs;
2573 if (extra_attrs || out_of_range_attr) {
2574 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2575 log_odp_key_attributes(&rl, "present but not expected",
2576 extra_attrs, out_of_range_attr, key, key_len);
2577 return ODP_FIT_TOO_MUCH;
2578 }
2579
2580 return ODP_FIT_PERFECT;
2581 }
2582
2583 static bool
2584 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2585 uint64_t present_attrs, uint64_t *expected_attrs,
2586 struct flow *flow)
2587 {
2588 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2589
2590 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
2591 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
2592 if (ntohs(flow->dl_type) < 1536) {
2593 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
2594 ntohs(flow->dl_type));
2595 return false;
2596 }
2597 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
2598 } else {
2599 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
2600 }
2601 return true;
2602 }
2603
2604 static enum odp_key_fitness
2605 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2606 uint64_t present_attrs, int out_of_range_attr,
2607 uint64_t expected_attrs, struct flow *flow,
2608 const struct nlattr *key, size_t key_len)
2609 {
2610 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2611
2612 if (eth_type_mpls(flow->dl_type)) {
2613 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2614
2615 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS))) {
2616 return ODP_FIT_TOO_LITTLE;
2617 }
2618 flow->mpls_lse = nl_attr_get_be32(attrs[OVS_KEY_ATTR_MPLS]);
2619 flow->mpls_depth++;
2620 } else if (flow->dl_type == htons(ETH_TYPE_IP)) {
2621 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
2622 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
2623 const struct ovs_key_ipv4 *ipv4_key;
2624
2625 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
2626 flow->nw_src = ipv4_key->ipv4_src;
2627 flow->nw_dst = ipv4_key->ipv4_dst;
2628 flow->nw_proto = ipv4_key->ipv4_proto;
2629 flow->nw_tos = ipv4_key->ipv4_tos;
2630 flow->nw_ttl = ipv4_key->ipv4_ttl;
2631 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
2632 return ODP_FIT_ERROR;
2633 }
2634 }
2635 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2636 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
2637 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
2638 const struct ovs_key_ipv6 *ipv6_key;
2639
2640 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
2641 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
2642 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
2643 flow->ipv6_label = ipv6_key->ipv6_label;
2644 flow->nw_proto = ipv6_key->ipv6_proto;
2645 flow->nw_tos = ipv6_key->ipv6_tclass;
2646 flow->nw_ttl = ipv6_key->ipv6_hlimit;
2647 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
2648 return ODP_FIT_ERROR;
2649 }
2650 }
2651 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2652 flow->dl_type == htons(ETH_TYPE_RARP)) {
2653 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
2654 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
2655 const struct ovs_key_arp *arp_key;
2656
2657 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
2658 flow->nw_src = arp_key->arp_sip;
2659 flow->nw_dst = arp_key->arp_tip;
2660 if (arp_key->arp_op & htons(0xff00)) {
2661 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
2662 "key", ntohs(arp_key->arp_op));
2663 return ODP_FIT_ERROR;
2664 }
2665 flow->nw_proto = ntohs(arp_key->arp_op);
2666 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
2667 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
2668 }
2669 }
2670
2671 if (flow->nw_proto == IPPROTO_TCP
2672 && (flow->dl_type == htons(ETH_TYPE_IP) ||
2673 flow->dl_type == htons(ETH_TYPE_IPV6))
2674 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2675 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
2676 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
2677 const struct ovs_key_tcp *tcp_key;
2678
2679 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
2680 flow->tp_src = tcp_key->tcp_src;
2681 flow->tp_dst = tcp_key->tcp_dst;
2682 }
2683 } else if (flow->nw_proto == IPPROTO_UDP
2684 && (flow->dl_type == htons(ETH_TYPE_IP) ||
2685 flow->dl_type == htons(ETH_TYPE_IPV6))
2686 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2687 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
2688 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
2689 const struct ovs_key_udp *udp_key;
2690
2691 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
2692 flow->tp_src = udp_key->udp_src;
2693 flow->tp_dst = udp_key->udp_dst;
2694 }
2695 } else if (flow->nw_proto == IPPROTO_ICMP
2696 && flow->dl_type == htons(ETH_TYPE_IP)
2697 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2698 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
2699 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
2700 const struct ovs_key_icmp *icmp_key;
2701
2702 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
2703 flow->tp_src = htons(icmp_key->icmp_type);
2704 flow->tp_dst = htons(icmp_key->icmp_code);
2705 }
2706 } else if (flow->nw_proto == IPPROTO_ICMPV6
2707 && flow->dl_type == htons(ETH_TYPE_IPV6)
2708 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2709 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
2710 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
2711 const struct ovs_key_icmpv6 *icmpv6_key;
2712
2713 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
2714 flow->tp_src = htons(icmpv6_key->icmpv6_type);
2715 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
2716
2717 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
2718 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
2719 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
2720 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
2721 const struct ovs_key_nd *nd_key;
2722
2723 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
2724 memcpy(&flow->nd_target, nd_key->nd_target,
2725 sizeof flow->nd_target);
2726 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
2727 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
2728 }
2729 }
2730 }
2731 }
2732
2733 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
2734 key, key_len);
2735 }
2736
2737 /* Parse 802.1Q header then encapsulated L3 attributes. */
2738 static enum odp_key_fitness
2739 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2740 uint64_t present_attrs, int out_of_range_attr,
2741 uint64_t expected_attrs, struct flow *flow,
2742 const struct nlattr *key, size_t key_len)
2743 {
2744 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2745
2746 const struct nlattr *encap
2747 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
2748 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
2749 enum odp_key_fitness encap_fitness;
2750 enum odp_key_fitness fitness;
2751 ovs_be16 tci;
2752
2753 /* Calculate fitness of outer attributes. */
2754 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
2755 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
2756 fitness = check_expectations(present_attrs, out_of_range_attr,
2757 expected_attrs, key, key_len);
2758
2759 /* Get the VLAN TCI value. */
2760 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
2761 return ODP_FIT_TOO_LITTLE;
2762 }
2763 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
2764 if (tci == htons(0)) {
2765 /* Corner case for a truncated 802.1Q header. */
2766 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
2767 return ODP_FIT_TOO_MUCH;
2768 }
2769 return fitness;
2770 } else if (!(tci & htons(VLAN_CFI))) {
2771 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
2772 "but CFI bit is not set", ntohs(tci));
2773 return ODP_FIT_ERROR;
2774 }
2775
2776 /* Set vlan_tci.
2777 * Remove the TPID from dl_type since it's not the real Ethertype. */
2778 flow->vlan_tci = tci;
2779 flow->dl_type = htons(0);
2780
2781 /* Now parse the encapsulated attributes. */
2782 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
2783 attrs, &present_attrs, &out_of_range_attr)) {
2784 return ODP_FIT_ERROR;
2785 }
2786 expected_attrs = 0;
2787
2788 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
2789 return ODP_FIT_ERROR;
2790 }
2791 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
2792 expected_attrs, flow, key, key_len);
2793
2794 /* The overall fitness is the worse of the outer and inner attributes. */
2795 return MAX(fitness, encap_fitness);
2796 }
2797
2798 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
2799 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
2800 * 'key' fits our expectations for what a flow key should contain.
2801 *
2802 * The 'in_port' will be the datapath's understanding of the port. The
2803 * caller will need to translate with odp_port_to_ofp_port() if the
2804 * OpenFlow port is needed.
2805 *
2806 * This function doesn't take the packet itself as an argument because none of
2807 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
2808 * it is always possible to infer which additional attribute(s) should appear
2809 * by looking at the attributes for lower-level protocols, e.g. if the network
2810 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
2811 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
2812 * must be absent. */
2813 enum odp_key_fitness
2814 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
2815 struct flow *flow)
2816 {
2817 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
2818 uint64_t expected_attrs;
2819 uint64_t present_attrs;
2820 int out_of_range_attr;
2821
2822 memset(flow, 0, sizeof *flow);
2823
2824 /* Parse attributes. */
2825 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
2826 &out_of_range_attr)) {
2827 return ODP_FIT_ERROR;
2828 }
2829 expected_attrs = 0;
2830
2831 /* Metadata. */
2832 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
2833 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
2834 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
2835 }
2836
2837 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
2838 flow->skb_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
2839 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
2840 }
2841
2842 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
2843 enum odp_key_fitness res;
2844
2845 res = odp_tun_key_from_attr(attrs[OVS_KEY_ATTR_TUNNEL], &flow->tunnel);
2846 if (res == ODP_FIT_ERROR) {
2847 return ODP_FIT_ERROR;
2848 } else if (res == ODP_FIT_PERFECT) {
2849 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
2850 }
2851 }
2852
2853 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
2854 flow->in_port.odp_port
2855 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
2856 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
2857 } else {
2858 flow->in_port.odp_port = ODPP_NONE;
2859 }
2860
2861 /* Ethernet header. */
2862 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
2863 const struct ovs_key_ethernet *eth_key;
2864
2865 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
2866 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
2867 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
2868 }
2869 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
2870
2871 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
2872 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
2873 return ODP_FIT_ERROR;
2874 }
2875
2876 if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
2877 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
2878 expected_attrs, flow, key, key_len);
2879 }
2880 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
2881 expected_attrs, flow, key, key_len);
2882 }
2883
2884 /* Returns 'fitness' as a string, for use in debug messages. */
2885 const char *
2886 odp_key_fitness_to_string(enum odp_key_fitness fitness)
2887 {
2888 switch (fitness) {
2889 case ODP_FIT_PERFECT:
2890 return "OK";
2891 case ODP_FIT_TOO_MUCH:
2892 return "too_much";
2893 case ODP_FIT_TOO_LITTLE:
2894 return "too_little";
2895 case ODP_FIT_ERROR:
2896 return "error";
2897 default:
2898 return "<unknown>";
2899 }
2900 }
2901
2902 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
2903 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
2904 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
2905 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
2906 * null, then the return value is not meaningful.) */
2907 size_t
2908 odp_put_userspace_action(uint32_t pid,
2909 const void *userdata, size_t userdata_size,
2910 struct ofpbuf *odp_actions)
2911 {
2912 size_t userdata_ofs;
2913 size_t offset;
2914
2915 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
2916 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
2917 if (userdata) {
2918 userdata_ofs = odp_actions->size + NLA_HDRLEN;
2919 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
2920 userdata, userdata_size);
2921 } else {
2922 userdata_ofs = 0;
2923 }
2924 nl_msg_end_nested(odp_actions, offset);
2925
2926 return userdata_ofs;
2927 }
2928
2929 void
2930 odp_put_tunnel_action(const struct flow_tnl *tunnel,
2931 struct ofpbuf *odp_actions)
2932 {
2933 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
2934 tun_key_to_attr(odp_actions, tunnel);
2935 nl_msg_end_nested(odp_actions, offset);
2936 }
2937 \f
2938 /* The commit_odp_actions() function and its helpers. */
2939
2940 static void
2941 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
2942 const void *key, size_t key_size)
2943 {
2944 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
2945 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
2946 nl_msg_end_nested(odp_actions, offset);
2947 }
2948
2949 void
2950 odp_put_skb_mark_action(const uint32_t skb_mark,
2951 struct ofpbuf *odp_actions)
2952 {
2953 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK, &skb_mark,
2954 sizeof(skb_mark));
2955 }
2956
2957 /* If any of the flow key data that ODP actions can modify are different in
2958 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
2959 * 'odp_actions' that change the flow tunneling information in key from
2960 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
2961 * same way. In other words, operates the same as commit_odp_actions(), but
2962 * only on tunneling information. */
2963 void
2964 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
2965 struct ofpbuf *odp_actions)
2966 {
2967 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
2968 if (flow->tunnel.ip_dst) {
2969 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
2970 return;
2971 }
2972 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
2973 odp_put_tunnel_action(&base->tunnel, odp_actions);
2974 }
2975 }
2976
2977 static void
2978 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
2979 struct ofpbuf *odp_actions,
2980 struct flow_wildcards *wc)
2981 {
2982 struct ovs_key_ethernet eth_key;
2983
2984 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
2985 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
2986 return;
2987 }
2988
2989 memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
2990 memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
2991
2992 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
2993 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
2994
2995 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
2996 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
2997
2998 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
2999 &eth_key, sizeof(eth_key));
3000 }
3001
3002 static void
3003 commit_vlan_action(const struct flow *flow, struct flow *base,
3004 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3005 {
3006 if (base->vlan_tci == flow->vlan_tci) {
3007 return;
3008 }
3009
3010 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
3011
3012 if (base->vlan_tci & htons(VLAN_CFI)) {
3013 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3014 }
3015
3016 if (flow->vlan_tci & htons(VLAN_CFI)) {
3017 struct ovs_action_push_vlan vlan;
3018
3019 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
3020 vlan.vlan_tci = flow->vlan_tci;
3021 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3022 &vlan, sizeof vlan);
3023 }
3024 base->vlan_tci = flow->vlan_tci;
3025 }
3026
3027 static void
3028 commit_mpls_action(const struct flow *flow, struct flow *base,
3029 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3030 {
3031 if (flow->mpls_lse == base->mpls_lse &&
3032 flow->mpls_depth == base->mpls_depth) {
3033 return;
3034 }
3035
3036 memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse);
3037
3038 if (flow->mpls_depth < base->mpls_depth) {
3039 if (base->mpls_depth - flow->mpls_depth > 1) {
3040 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
3041 VLOG_WARN_RL(&rl, "Multiple mpls_pop actions reduced to "
3042 " a single mpls_pop action");
3043 }
3044
3045 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, flow->dl_type);
3046 } else if (flow->mpls_depth > base->mpls_depth) {
3047 struct ovs_action_push_mpls *mpls;
3048
3049 if (flow->mpls_depth - base->mpls_depth > 1) {
3050 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
3051 VLOG_WARN_RL(&rl, "Multiple mpls_push actions reduced to "
3052 " a single mpls_push action");
3053 }
3054
3055 mpls = nl_msg_put_unspec_uninit(odp_actions, OVS_ACTION_ATTR_PUSH_MPLS,
3056 sizeof *mpls);
3057 memset(mpls, 0, sizeof *mpls);
3058 mpls->mpls_ethertype = flow->dl_type;
3059 mpls->mpls_lse = flow->mpls_lse;
3060 } else {
3061 struct ovs_key_mpls mpls_key;
3062
3063 mpls_key.mpls_lse = flow->mpls_lse;
3064 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
3065 &mpls_key, sizeof(mpls_key));
3066 }
3067
3068 base->dl_type = flow->dl_type;
3069 base->mpls_lse = flow->mpls_lse;
3070 base->mpls_depth = flow->mpls_depth;
3071 }
3072
3073 static void
3074 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
3075 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3076 {
3077 struct ovs_key_ipv4 ipv4_key;
3078
3079 if (base->nw_src == flow->nw_src &&
3080 base->nw_dst == flow->nw_dst &&
3081 base->nw_tos == flow->nw_tos &&
3082 base->nw_ttl == flow->nw_ttl &&
3083 base->nw_frag == flow->nw_frag) {
3084 return;
3085 }
3086
3087 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3088 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3089 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3090 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3091 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3092 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3093
3094 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
3095 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
3096 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
3097 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
3098 ipv4_key.ipv4_proto = base->nw_proto;
3099 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
3100
3101 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
3102 &ipv4_key, sizeof(ipv4_key));
3103 }
3104
3105 static void
3106 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
3107 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3108 {
3109 struct ovs_key_ipv6 ipv6_key;
3110
3111 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
3112 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
3113 base->ipv6_label == flow->ipv6_label &&
3114 base->nw_tos == flow->nw_tos &&
3115 base->nw_ttl == flow->nw_ttl &&
3116 base->nw_frag == flow->nw_frag) {
3117 return;
3118 }
3119
3120 memset(&wc->masks.ipv6_src, 0xff, sizeof wc->masks.ipv6_src);
3121 memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst);
3122 memset(&wc->masks.ipv6_label, 0xff, sizeof wc->masks.ipv6_label);
3123 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3124 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3125 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3126 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3127
3128 base->ipv6_src = flow->ipv6_src;
3129 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
3130 base->ipv6_dst = flow->ipv6_dst;
3131 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
3132
3133 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
3134 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
3135 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
3136 ipv6_key.ipv6_proto = base->nw_proto;
3137 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
3138
3139 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
3140 &ipv6_key, sizeof(ipv6_key));
3141 }
3142
3143 static void
3144 commit_set_nw_action(const struct flow *flow, struct flow *base,
3145 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3146 {
3147 /* Check if flow really have an IP header. */
3148 if (!flow->nw_proto) {
3149 return;
3150 }
3151
3152 if (base->dl_type == htons(ETH_TYPE_IP)) {
3153 commit_set_ipv4_action(flow, base, odp_actions, wc);
3154 } else if (base->dl_type == htons(ETH_TYPE_IPV6)) {
3155 commit_set_ipv6_action(flow, base, odp_actions, wc);
3156 }
3157 }
3158
3159 static void
3160 commit_set_port_action(const struct flow *flow, struct flow *base,
3161 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3162 {
3163 if (!is_ip_any(base) || (!base->tp_src && !base->tp_dst)) {
3164 return;
3165 }
3166
3167 if (base->tp_src == flow->tp_src &&
3168 base->tp_dst == flow->tp_dst) {
3169 return;
3170 }
3171
3172 memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
3173 memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
3174
3175 if (flow->nw_proto == IPPROTO_TCP) {
3176 struct ovs_key_tcp port_key;
3177
3178 port_key.tcp_src = base->tp_src = flow->tp_src;
3179 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
3180
3181 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
3182 &port_key, sizeof(port_key));
3183
3184 } else if (flow->nw_proto == IPPROTO_UDP) {
3185 struct ovs_key_udp port_key;
3186
3187 port_key.udp_src = base->tp_src = flow->tp_src;
3188 port_key.udp_dst = base->tp_dst = flow->tp_dst;
3189
3190 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
3191 &port_key, sizeof(port_key));
3192 }
3193 }
3194
3195 static void
3196 commit_set_priority_action(const struct flow *flow, struct flow *base,
3197 struct ofpbuf *odp_actions,
3198 struct flow_wildcards *wc)
3199 {
3200 if (base->skb_priority == flow->skb_priority) {
3201 return;
3202 }
3203
3204 memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
3205 base->skb_priority = flow->skb_priority;
3206
3207 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
3208 &base->skb_priority, sizeof(base->skb_priority));
3209 }
3210
3211 static void
3212 commit_set_skb_mark_action(const struct flow *flow, struct flow *base,
3213 struct ofpbuf *odp_actions,
3214 struct flow_wildcards *wc)
3215 {
3216 if (base->skb_mark == flow->skb_mark) {
3217 return;
3218 }
3219
3220 memset(&wc->masks.skb_mark, 0xff, sizeof wc->masks.skb_mark);
3221 base->skb_mark = flow->skb_mark;
3222
3223 odp_put_skb_mark_action(base->skb_mark, odp_actions);
3224 }
3225 /* If any of the flow key data that ODP actions can modify are different in
3226 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
3227 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
3228 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
3229 * in addition to this function if needed. Sets fields in 'wc' that are
3230 * used as part of the action. */
3231 void
3232 commit_odp_actions(const struct flow *flow, struct flow *base,
3233 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3234 {
3235 commit_set_ether_addr_action(flow, base, odp_actions, wc);
3236 commit_vlan_action(flow, base, odp_actions, wc);
3237 commit_set_nw_action(flow, base, odp_actions, wc);
3238 commit_set_port_action(flow, base, odp_actions, wc);
3239 /* Committing MPLS actions should occur after committing nw and port
3240 * actions. This is because committing MPLS actions may alter a packet so
3241 * that it is no longer IP and thus nw and port actions are no longer valid.
3242 */
3243 commit_mpls_action(flow, base, odp_actions, wc);
3244 commit_set_priority_action(flow, base, odp_actions, wc);
3245 commit_set_skb_mark_action(flow, base, odp_actions, wc);
3246 }
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