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odp-util: Always serialise recirculation in upcall key.
[ovs.git] / lib / odp-util.c
1 /*
2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 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 "dpif.h"
30 #include "dynamic-string.h"
31 #include "flow.h"
32 #include "netlink.h"
33 #include "ofpbuf.h"
34 #include "packets.h"
35 #include "simap.h"
36 #include "timeval.h"
37 #include "util.h"
38 #include "vlog.h"
39
40 VLOG_DEFINE_THIS_MODULE(odp_util);
41
42 /* The interface between userspace and kernel uses an "OVS_*" prefix.
43 * Since this is fairly non-specific for the OVS userspace components,
44 * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
45 * interactions with the datapath.
46 */
47
48 /* The set of characters that may separate one action or one key attribute
49 * from another. */
50 static const char *delimiters = ", \t\r\n";
51
52 static int parse_odp_key_mask_attr(const char *, const struct simap *port_names,
53 struct ofpbuf *, struct ofpbuf *);
54 static void format_odp_key_attr(const struct nlattr *a,
55 const struct nlattr *ma,
56 const struct hmap *portno_names, struct ds *ds,
57 bool verbose);
58
59 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
60 * 'type':
61 *
62 * - For an action whose argument has a fixed length, returned that
63 * nonnegative length in bytes.
64 *
65 * - For an action with a variable-length argument, returns -2.
66 *
67 * - For an invalid 'type', returns -1. */
68 static int
69 odp_action_len(uint16_t type)
70 {
71 if (type > OVS_ACTION_ATTR_MAX) {
72 return -1;
73 }
74
75 switch ((enum ovs_action_attr) type) {
76 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
77 case OVS_ACTION_ATTR_USERSPACE: return -2;
78 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
79 case OVS_ACTION_ATTR_POP_VLAN: return 0;
80 case OVS_ACTION_ATTR_PUSH_MPLS: return sizeof(struct ovs_action_push_mpls);
81 case OVS_ACTION_ATTR_POP_MPLS: return sizeof(ovs_be16);
82 case OVS_ACTION_ATTR_RECIRC: return sizeof(uint32_t);
83 case OVS_ACTION_ATTR_HASH: return sizeof(struct ovs_action_hash);
84 case OVS_ACTION_ATTR_SET: return -2;
85 case OVS_ACTION_ATTR_SAMPLE: return -2;
86
87 case OVS_ACTION_ATTR_UNSPEC:
88 case __OVS_ACTION_ATTR_MAX:
89 return -1;
90 }
91
92 return -1;
93 }
94
95 /* Returns a string form of 'attr'. The return value is either a statically
96 * allocated constant string or the 'bufsize'-byte buffer 'namebuf'. 'bufsize'
97 * should be at least OVS_KEY_ATTR_BUFSIZE. */
98 enum { OVS_KEY_ATTR_BUFSIZE = 3 + INT_STRLEN(unsigned int) + 1 };
99 static const char *
100 ovs_key_attr_to_string(enum ovs_key_attr attr, char *namebuf, size_t bufsize)
101 {
102 switch (attr) {
103 case OVS_KEY_ATTR_UNSPEC: return "unspec";
104 case OVS_KEY_ATTR_ENCAP: return "encap";
105 case OVS_KEY_ATTR_PRIORITY: return "skb_priority";
106 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
107 case OVS_KEY_ATTR_TUNNEL: return "tunnel";
108 case OVS_KEY_ATTR_IN_PORT: return "in_port";
109 case OVS_KEY_ATTR_ETHERNET: return "eth";
110 case OVS_KEY_ATTR_VLAN: return "vlan";
111 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
112 case OVS_KEY_ATTR_IPV4: return "ipv4";
113 case OVS_KEY_ATTR_IPV6: return "ipv6";
114 case OVS_KEY_ATTR_TCP: return "tcp";
115 case OVS_KEY_ATTR_TCP_FLAGS: return "tcp_flags";
116 case OVS_KEY_ATTR_UDP: return "udp";
117 case OVS_KEY_ATTR_SCTP: return "sctp";
118 case OVS_KEY_ATTR_ICMP: return "icmp";
119 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
120 case OVS_KEY_ATTR_ARP: return "arp";
121 case OVS_KEY_ATTR_ND: return "nd";
122 case OVS_KEY_ATTR_MPLS: return "mpls";
123 case OVS_KEY_ATTR_DP_HASH: return "dp_hash";
124 case OVS_KEY_ATTR_RECIRC_ID: return "recirc_id";
125
126 case __OVS_KEY_ATTR_MAX:
127 default:
128 snprintf(namebuf, bufsize, "key%u", (unsigned int) attr);
129 return namebuf;
130 }
131 }
132
133 static void
134 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
135 {
136 size_t len = nl_attr_get_size(a);
137
138 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
139 if (len) {
140 const uint8_t *unspec;
141 unsigned int i;
142
143 unspec = nl_attr_get(a);
144 for (i = 0; i < len; i++) {
145 ds_put_char(ds, i ? ' ': '(');
146 ds_put_format(ds, "%02x", unspec[i]);
147 }
148 ds_put_char(ds, ')');
149 }
150 }
151
152 static void
153 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
154 {
155 static const struct nl_policy ovs_sample_policy[] = {
156 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
157 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
158 };
159 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
160 double percentage;
161 const struct nlattr *nla_acts;
162 int len;
163
164 ds_put_cstr(ds, "sample");
165
166 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
167 ds_put_cstr(ds, "(error)");
168 return;
169 }
170
171 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
172 UINT32_MAX;
173
174 ds_put_format(ds, "(sample=%.1f%%,", percentage);
175
176 ds_put_cstr(ds, "actions(");
177 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
178 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
179 format_odp_actions(ds, nla_acts, len);
180 ds_put_format(ds, "))");
181 }
182
183 static const char *
184 slow_path_reason_to_string(uint32_t reason)
185 {
186 switch ((enum slow_path_reason) reason) {
187 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return STRING;
188 SLOW_PATH_REASONS
189 #undef SPR
190 }
191
192 return NULL;
193 }
194
195 const char *
196 slow_path_reason_to_explanation(enum slow_path_reason reason)
197 {
198 switch (reason) {
199 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return EXPLANATION;
200 SLOW_PATH_REASONS
201 #undef SPR
202 }
203
204 return "<unknown>";
205 }
206
207 static int
208 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
209 uint32_t *res)
210 {
211 uint32_t result = 0;
212 int n = 0;
213
214 if (s[n] != '(') {
215 return -EINVAL;
216 }
217 n++;
218
219 while (s[n] != ')') {
220 unsigned long long int flags;
221 uint32_t bit;
222 int n0;
223
224 if (ovs_scan(&s[n], "%lli%n", &flags, &n0)) {
225 n += n0 + (s[n + n0] == ',');
226 result |= flags;
227 continue;
228 }
229
230 for (bit = 1; bit; bit <<= 1) {
231 const char *name = bit_to_string(bit);
232 size_t len;
233
234 if (!name) {
235 continue;
236 }
237
238 len = strlen(name);
239 if (!strncmp(s + n, name, len) &&
240 (s[n + len] == ',' || s[n + len] == ')')) {
241 result |= bit;
242 n += len + (s[n + len] == ',');
243 break;
244 }
245 }
246
247 if (!bit) {
248 return -EINVAL;
249 }
250 }
251 n++;
252
253 *res = result;
254 return n;
255 }
256
257 static void
258 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
259 {
260 static const struct nl_policy ovs_userspace_policy[] = {
261 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
262 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_UNSPEC,
263 .optional = true },
264 };
265 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
266 const struct nlattr *userdata_attr;
267
268 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
269 ds_put_cstr(ds, "userspace(error)");
270 return;
271 }
272
273 ds_put_format(ds, "userspace(pid=%"PRIu32,
274 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
275
276 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
277
278 if (userdata_attr) {
279 const uint8_t *userdata = nl_attr_get(userdata_attr);
280 size_t userdata_len = nl_attr_get_size(userdata_attr);
281 bool userdata_unspec = true;
282 union user_action_cookie cookie;
283
284 if (userdata_len >= sizeof cookie.type
285 && userdata_len <= sizeof cookie) {
286
287 memset(&cookie, 0, sizeof cookie);
288 memcpy(&cookie, userdata, userdata_len);
289
290 userdata_unspec = false;
291
292 if (userdata_len == sizeof cookie.sflow
293 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
294 ds_put_format(ds, ",sFlow("
295 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
296 vlan_tci_to_vid(cookie.sflow.vlan_tci),
297 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
298 cookie.sflow.output);
299 } else if (userdata_len == sizeof cookie.slow_path
300 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
301 ds_put_cstr(ds, ",slow_path(");
302 format_flags(ds, slow_path_reason_to_string,
303 cookie.slow_path.reason, ',');
304 ds_put_format(ds, ")");
305 } else if (userdata_len == sizeof cookie.flow_sample
306 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
307 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
308 ",collector_set_id=%"PRIu32
309 ",obs_domain_id=%"PRIu32
310 ",obs_point_id=%"PRIu32")",
311 cookie.flow_sample.probability,
312 cookie.flow_sample.collector_set_id,
313 cookie.flow_sample.obs_domain_id,
314 cookie.flow_sample.obs_point_id);
315 } else if (userdata_len >= sizeof cookie.ipfix
316 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
317 ds_put_format(ds, ",ipfix");
318 } else {
319 userdata_unspec = true;
320 }
321 }
322
323 if (userdata_unspec) {
324 size_t i;
325 ds_put_format(ds, ",userdata(");
326 for (i = 0; i < userdata_len; i++) {
327 ds_put_format(ds, "%02x", userdata[i]);
328 }
329 ds_put_char(ds, ')');
330 }
331 }
332
333 ds_put_char(ds, ')');
334 }
335
336 static void
337 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
338 {
339 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
340 vlan_tci_to_vid(vlan_tci),
341 vlan_tci_to_pcp(vlan_tci));
342 if (!(vlan_tci & htons(VLAN_CFI))) {
343 ds_put_cstr(ds, ",cfi=0");
344 }
345 }
346
347 static void
348 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
349 {
350 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
351 mpls_lse_to_label(mpls_lse),
352 mpls_lse_to_tc(mpls_lse),
353 mpls_lse_to_ttl(mpls_lse),
354 mpls_lse_to_bos(mpls_lse));
355 }
356
357 static void
358 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
359 const struct ovs_key_mpls *mpls_mask, int n)
360 {
361 if (n == 1) {
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 } else {
376 int i;
377
378 for (i = 0; i < n; i++) {
379 ds_put_format(ds, "lse%d=%#"PRIx32,
380 i, ntohl(mpls_key[i].mpls_lse));
381 if (mpls_mask) {
382 ds_put_format(ds, "/%#"PRIx32, ntohl(mpls_mask[i].mpls_lse));
383 }
384 ds_put_char(ds, ',');
385 }
386 ds_chomp(ds, ',');
387 }
388 }
389
390 static void
391 format_odp_recirc_action(struct ds *ds, uint32_t recirc_id)
392 {
393 ds_put_format(ds, "recirc(%"PRIu32")", recirc_id);
394 }
395
396 static void
397 format_odp_hash_action(struct ds *ds, const struct ovs_action_hash *hash_act)
398 {
399 ds_put_format(ds, "hash(");
400
401 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
402 ds_put_format(ds, "hash_l4(%"PRIu32")", hash_act->hash_basis);
403 } else {
404 ds_put_format(ds, "Unknown hash algorithm(%"PRIu32")",
405 hash_act->hash_alg);
406 }
407 ds_put_format(ds, ")");
408 }
409
410 static void
411 format_odp_action(struct ds *ds, const struct nlattr *a)
412 {
413 int expected_len;
414 enum ovs_action_attr type = nl_attr_type(a);
415 const struct ovs_action_push_vlan *vlan;
416
417 expected_len = odp_action_len(nl_attr_type(a));
418 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
419 ds_put_format(ds, "bad length %"PRIuSIZE", expected %d for: ",
420 nl_attr_get_size(a), expected_len);
421 format_generic_odp_action(ds, a);
422 return;
423 }
424
425 switch (type) {
426 case OVS_ACTION_ATTR_OUTPUT:
427 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
428 break;
429 case OVS_ACTION_ATTR_USERSPACE:
430 format_odp_userspace_action(ds, a);
431 break;
432 case OVS_ACTION_ATTR_RECIRC:
433 format_odp_recirc_action(ds, nl_attr_get_u32(a));
434 break;
435 case OVS_ACTION_ATTR_HASH:
436 format_odp_hash_action(ds, nl_attr_get(a));
437 break;
438 case OVS_ACTION_ATTR_SET:
439 ds_put_cstr(ds, "set(");
440 format_odp_key_attr(nl_attr_get(a), NULL, NULL, ds, true);
441 ds_put_cstr(ds, ")");
442 break;
443 case OVS_ACTION_ATTR_PUSH_VLAN:
444 vlan = nl_attr_get(a);
445 ds_put_cstr(ds, "push_vlan(");
446 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
447 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
448 }
449 format_vlan_tci(ds, vlan->vlan_tci);
450 ds_put_char(ds, ')');
451 break;
452 case OVS_ACTION_ATTR_POP_VLAN:
453 ds_put_cstr(ds, "pop_vlan");
454 break;
455 case OVS_ACTION_ATTR_PUSH_MPLS: {
456 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
457 ds_put_cstr(ds, "push_mpls(");
458 format_mpls_lse(ds, mpls->mpls_lse);
459 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
460 break;
461 }
462 case OVS_ACTION_ATTR_POP_MPLS: {
463 ovs_be16 ethertype = nl_attr_get_be16(a);
464 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
465 break;
466 }
467 case OVS_ACTION_ATTR_SAMPLE:
468 format_odp_sample_action(ds, a);
469 break;
470 case OVS_ACTION_ATTR_UNSPEC:
471 case __OVS_ACTION_ATTR_MAX:
472 default:
473 format_generic_odp_action(ds, a);
474 break;
475 }
476 }
477
478 void
479 format_odp_actions(struct ds *ds, const struct nlattr *actions,
480 size_t actions_len)
481 {
482 if (actions_len) {
483 const struct nlattr *a;
484 unsigned int left;
485
486 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
487 if (a != actions) {
488 ds_put_char(ds, ',');
489 }
490 format_odp_action(ds, a);
491 }
492 if (left) {
493 int i;
494
495 if (left == actions_len) {
496 ds_put_cstr(ds, "<empty>");
497 }
498 ds_put_format(ds, ",***%u leftover bytes*** (", left);
499 for (i = 0; i < left; i++) {
500 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
501 }
502 ds_put_char(ds, ')');
503 }
504 } else {
505 ds_put_cstr(ds, "drop");
506 }
507 }
508
509 static int
510 parse_odp_action(const char *s, const struct simap *port_names,
511 struct ofpbuf *actions)
512 {
513 {
514 uint32_t port;
515 int n;
516
517 if (ovs_scan(s, "%"SCNi32"%n", &port, &n)) {
518 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
519 return n;
520 }
521 }
522
523 if (port_names) {
524 int len = strcspn(s, delimiters);
525 struct simap_node *node;
526
527 node = simap_find_len(port_names, s, len);
528 if (node) {
529 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
530 return len;
531 }
532 }
533
534 {
535 uint32_t pid;
536 uint32_t output;
537 uint32_t probability;
538 uint32_t collector_set_id;
539 uint32_t obs_domain_id;
540 uint32_t obs_point_id;
541 int vid, pcp;
542 int n = -1;
543
544 if (ovs_scan(s, "userspace(pid=%"SCNi32")%n", &pid, &n)) {
545 odp_put_userspace_action(pid, NULL, 0, actions);
546 return n;
547 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",sFlow(vid=%i,"
548 "pcp=%i,output=%"SCNi32"))%n",
549 &pid, &vid, &pcp, &output, &n)) {
550 union user_action_cookie cookie;
551 uint16_t tci;
552
553 tci = vid | (pcp << VLAN_PCP_SHIFT);
554 if (tci) {
555 tci |= VLAN_CFI;
556 }
557
558 cookie.type = USER_ACTION_COOKIE_SFLOW;
559 cookie.sflow.vlan_tci = htons(tci);
560 cookie.sflow.output = output;
561 odp_put_userspace_action(pid, &cookie, sizeof cookie.sflow,
562 actions);
563 return n;
564 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",slow_path%n",
565 &pid, &n)) {
566 union user_action_cookie cookie;
567 int res;
568
569 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
570 cookie.slow_path.unused = 0;
571 cookie.slow_path.reason = 0;
572
573 res = parse_flags(&s[n], slow_path_reason_to_string,
574 &cookie.slow_path.reason);
575 if (res < 0) {
576 return res;
577 }
578 n += res;
579 if (s[n] != ')') {
580 return -EINVAL;
581 }
582 n++;
583
584 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path,
585 actions);
586 return n;
587 } else if (ovs_scan(s, "userspace(pid=%"SCNi32","
588 "flow_sample(probability=%"SCNi32","
589 "collector_set_id=%"SCNi32","
590 "obs_domain_id=%"SCNi32","
591 "obs_point_id=%"SCNi32"))%n",
592 &pid, &probability, &collector_set_id,
593 &obs_domain_id, &obs_point_id, &n)) {
594 union user_action_cookie cookie;
595
596 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
597 cookie.flow_sample.probability = probability;
598 cookie.flow_sample.collector_set_id = collector_set_id;
599 cookie.flow_sample.obs_domain_id = obs_domain_id;
600 cookie.flow_sample.obs_point_id = obs_point_id;
601 odp_put_userspace_action(pid, &cookie, sizeof cookie.flow_sample,
602 actions);
603 return n;
604 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",ipfix)%n", &pid, &n)) {
605 union user_action_cookie cookie;
606
607 cookie.type = USER_ACTION_COOKIE_IPFIX;
608 odp_put_userspace_action(pid, &cookie, sizeof cookie.ipfix,
609 actions);
610 return n;
611 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",userdata(%n",
612 &pid, &n)) {
613 struct ofpbuf buf;
614 char *end;
615
616 ofpbuf_init(&buf, 16);
617 end = ofpbuf_put_hex(&buf, &s[n], NULL);
618 if (end[0] == ')' && end[1] == ')') {
619 odp_put_userspace_action(pid, ofpbuf_data(&buf), ofpbuf_size(&buf), actions);
620 ofpbuf_uninit(&buf);
621 return (end + 2) - s;
622 }
623 }
624 }
625
626 if (!strncmp(s, "set(", 4)) {
627 size_t start_ofs;
628 int retval;
629
630 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
631 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, NULL);
632 if (retval < 0) {
633 return retval;
634 }
635 if (s[retval + 4] != ')') {
636 return -EINVAL;
637 }
638 nl_msg_end_nested(actions, start_ofs);
639 return retval + 5;
640 }
641
642 {
643 struct ovs_action_push_vlan push;
644 int tpid = ETH_TYPE_VLAN;
645 int vid, pcp;
646 int cfi = 1;
647 int n = -1;
648
649 if (ovs_scan(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)
650 || ovs_scan(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
651 &vid, &pcp, &cfi, &n)
652 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
653 &tpid, &vid, &pcp, &n)
654 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
655 &tpid, &vid, &pcp, &cfi, &n)) {
656 push.vlan_tpid = htons(tpid);
657 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
658 | (pcp << VLAN_PCP_SHIFT)
659 | (cfi ? VLAN_CFI : 0));
660 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
661 &push, sizeof push);
662
663 return n;
664 }
665 }
666
667 if (!strncmp(s, "pop_vlan", 8)) {
668 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
669 return 8;
670 }
671
672 {
673 double percentage;
674 int n = -1;
675
676 if (ovs_scan(s, "sample(sample=%lf%%,actions(%n", &percentage, &n)
677 && percentage >= 0. && percentage <= 100.0) {
678 size_t sample_ofs, actions_ofs;
679 double probability;
680
681 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
682 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
683 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
684 (probability <= 0 ? 0
685 : probability >= UINT32_MAX ? UINT32_MAX
686 : probability));
687
688 actions_ofs = nl_msg_start_nested(actions,
689 OVS_SAMPLE_ATTR_ACTIONS);
690 for (;;) {
691 int retval;
692
693 n += strspn(s + n, delimiters);
694 if (s[n] == ')') {
695 break;
696 }
697
698 retval = parse_odp_action(s + n, port_names, actions);
699 if (retval < 0) {
700 return retval;
701 }
702 n += retval;
703 }
704 nl_msg_end_nested(actions, actions_ofs);
705 nl_msg_end_nested(actions, sample_ofs);
706
707 return s[n + 1] == ')' ? n + 2 : -EINVAL;
708 }
709 }
710
711 return -EINVAL;
712 }
713
714 /* Parses the string representation of datapath actions, in the format output
715 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
716 * value. On success, the ODP actions are appended to 'actions' as a series of
717 * Netlink attributes. On failure, no data is appended to 'actions'. Either
718 * way, 'actions''s data might be reallocated. */
719 int
720 odp_actions_from_string(const char *s, const struct simap *port_names,
721 struct ofpbuf *actions)
722 {
723 size_t old_size;
724
725 if (!strcasecmp(s, "drop")) {
726 return 0;
727 }
728
729 old_size = ofpbuf_size(actions);
730 for (;;) {
731 int retval;
732
733 s += strspn(s, delimiters);
734 if (!*s) {
735 return 0;
736 }
737
738 retval = parse_odp_action(s, port_names, actions);
739 if (retval < 0 || !strchr(delimiters, s[retval])) {
740 ofpbuf_set_size(actions, old_size);
741 return -retval;
742 }
743 s += retval;
744 }
745
746 return 0;
747 }
748 \f
749 /* Returns the correct length of the payload for a flow key attribute of the
750 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
751 * is variable length. */
752 static int
753 odp_flow_key_attr_len(uint16_t type)
754 {
755 if (type > OVS_KEY_ATTR_MAX) {
756 return -1;
757 }
758
759 switch ((enum ovs_key_attr) type) {
760 case OVS_KEY_ATTR_ENCAP: return -2;
761 case OVS_KEY_ATTR_PRIORITY: return 4;
762 case OVS_KEY_ATTR_SKB_MARK: return 4;
763 case OVS_KEY_ATTR_DP_HASH: return 4;
764 case OVS_KEY_ATTR_RECIRC_ID: return 4;
765 case OVS_KEY_ATTR_TUNNEL: return -2;
766 case OVS_KEY_ATTR_IN_PORT: return 4;
767 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
768 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
769 case OVS_KEY_ATTR_ETHERTYPE: return 2;
770 case OVS_KEY_ATTR_MPLS: return -2;
771 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
772 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
773 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
774 case OVS_KEY_ATTR_TCP_FLAGS: return 2;
775 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
776 case OVS_KEY_ATTR_SCTP: return sizeof(struct ovs_key_sctp);
777 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
778 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
779 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
780 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
781
782 case OVS_KEY_ATTR_UNSPEC:
783 case __OVS_KEY_ATTR_MAX:
784 return -1;
785 }
786
787 return -1;
788 }
789
790 static void
791 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
792 {
793 size_t len = nl_attr_get_size(a);
794 if (len) {
795 const uint8_t *unspec;
796 unsigned int i;
797
798 unspec = nl_attr_get(a);
799 for (i = 0; i < len; i++) {
800 if (i) {
801 ds_put_char(ds, ' ');
802 }
803 ds_put_format(ds, "%02x", unspec[i]);
804 }
805 }
806 }
807
808 static const char *
809 ovs_frag_type_to_string(enum ovs_frag_type type)
810 {
811 switch (type) {
812 case OVS_FRAG_TYPE_NONE:
813 return "no";
814 case OVS_FRAG_TYPE_FIRST:
815 return "first";
816 case OVS_FRAG_TYPE_LATER:
817 return "later";
818 case __OVS_FRAG_TYPE_MAX:
819 default:
820 return "<error>";
821 }
822 }
823
824 static int
825 tunnel_key_attr_len(int type)
826 {
827 switch (type) {
828 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
829 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
830 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
831 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
832 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
833 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
834 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
835 case __OVS_TUNNEL_KEY_ATTR_MAX:
836 return -1;
837 }
838 return -1;
839 }
840
841 enum odp_key_fitness
842 odp_tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
843 {
844 unsigned int left;
845 const struct nlattr *a;
846 bool ttl = false;
847 bool unknown = false;
848
849 NL_NESTED_FOR_EACH(a, left, attr) {
850 uint16_t type = nl_attr_type(a);
851 size_t len = nl_attr_get_size(a);
852 int expected_len = tunnel_key_attr_len(type);
853
854 if (len != expected_len && expected_len >= 0) {
855 return ODP_FIT_ERROR;
856 }
857
858 switch (type) {
859 case OVS_TUNNEL_KEY_ATTR_ID:
860 tun->tun_id = nl_attr_get_be64(a);
861 tun->flags |= FLOW_TNL_F_KEY;
862 break;
863 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
864 tun->ip_src = nl_attr_get_be32(a);
865 break;
866 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
867 tun->ip_dst = nl_attr_get_be32(a);
868 break;
869 case OVS_TUNNEL_KEY_ATTR_TOS:
870 tun->ip_tos = nl_attr_get_u8(a);
871 break;
872 case OVS_TUNNEL_KEY_ATTR_TTL:
873 tun->ip_ttl = nl_attr_get_u8(a);
874 ttl = true;
875 break;
876 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
877 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
878 break;
879 case OVS_TUNNEL_KEY_ATTR_CSUM:
880 tun->flags |= FLOW_TNL_F_CSUM;
881 break;
882 default:
883 /* Allow this to show up as unexpected, if there are unknown
884 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
885 unknown = true;
886 break;
887 }
888 }
889
890 if (!ttl) {
891 return ODP_FIT_ERROR;
892 }
893 if (unknown) {
894 return ODP_FIT_TOO_MUCH;
895 }
896 return ODP_FIT_PERFECT;
897 }
898
899 static void
900 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
901 {
902 size_t tun_key_ofs;
903
904 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
905
906 /* tun_id != 0 without FLOW_TNL_F_KEY is valid if tun_key is a mask. */
907 if (tun_key->tun_id || tun_key->flags & FLOW_TNL_F_KEY) {
908 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
909 }
910 if (tun_key->ip_src) {
911 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
912 }
913 if (tun_key->ip_dst) {
914 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
915 }
916 if (tun_key->ip_tos) {
917 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
918 }
919 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
920 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
921 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
922 }
923 if (tun_key->flags & FLOW_TNL_F_CSUM) {
924 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
925 }
926
927 nl_msg_end_nested(a, tun_key_ofs);
928 }
929
930 static bool
931 odp_mask_attr_is_wildcard(const struct nlattr *ma)
932 {
933 return is_all_zeros(nl_attr_get(ma), nl_attr_get_size(ma));
934 }
935
936 static bool
937 odp_mask_attr_is_exact(const struct nlattr *ma)
938 {
939 bool is_exact = false;
940 enum ovs_key_attr attr = nl_attr_type(ma);
941
942 if (attr == OVS_KEY_ATTR_TUNNEL) {
943 /* XXX this is a hack for now. Should change
944 * the exact match dection to per field
945 * instead of per attribute.
946 */
947 struct flow_tnl tun_mask;
948 memset(&tun_mask, 0, sizeof tun_mask);
949 odp_tun_key_from_attr(ma, &tun_mask);
950 if (tun_mask.flags == (FLOW_TNL_F_KEY
951 | FLOW_TNL_F_DONT_FRAGMENT
952 | FLOW_TNL_F_CSUM)) {
953 /* The flags are exact match, check the remaining fields. */
954 tun_mask.flags = 0xffff;
955 is_exact = is_all_ones((uint8_t *)&tun_mask,
956 offsetof(struct flow_tnl, ip_ttl));
957 }
958 } else {
959 is_exact = is_all_ones(nl_attr_get(ma), nl_attr_get_size(ma));
960 }
961
962 return is_exact;
963 }
964
965 void
966 odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no,
967 char *port_name)
968 {
969 struct odp_portno_names *odp_portno_names;
970
971 odp_portno_names = xmalloc(sizeof *odp_portno_names);
972 odp_portno_names->port_no = port_no;
973 odp_portno_names->name = xstrdup(port_name);
974 hmap_insert(portno_names, &odp_portno_names->hmap_node,
975 hash_odp_port(port_no));
976 }
977
978 static char *
979 odp_portno_names_get(const struct hmap *portno_names, odp_port_t port_no)
980 {
981 struct odp_portno_names *odp_portno_names;
982
983 HMAP_FOR_EACH_IN_BUCKET (odp_portno_names, hmap_node,
984 hash_odp_port(port_no), portno_names) {
985 if (odp_portno_names->port_no == port_no) {
986 return odp_portno_names->name;
987 }
988 }
989 return NULL;
990 }
991
992 void
993 odp_portno_names_destroy(struct hmap *portno_names)
994 {
995 struct odp_portno_names *odp_portno_names, *odp_portno_names_next;
996 HMAP_FOR_EACH_SAFE (odp_portno_names, odp_portno_names_next,
997 hmap_node, portno_names) {
998 hmap_remove(portno_names, &odp_portno_names->hmap_node);
999 free(odp_portno_names->name);
1000 free(odp_portno_names);
1001 }
1002 }
1003
1004 static void
1005 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
1006 const struct hmap *portno_names, struct ds *ds,
1007 bool verbose)
1008 {
1009 struct flow_tnl tun_key;
1010 enum ovs_key_attr attr = nl_attr_type(a);
1011 char namebuf[OVS_KEY_ATTR_BUFSIZE];
1012 int expected_len;
1013 bool is_exact;
1014
1015 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
1016
1017 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
1018
1019 {
1020 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
1021 if (expected_len != -2) {
1022 bool bad_key_len = nl_attr_get_size(a) != expected_len;
1023 bool bad_mask_len = ma && nl_attr_get_size(ma) != expected_len;
1024
1025 if (bad_key_len || bad_mask_len) {
1026 if (bad_key_len) {
1027 ds_put_format(ds, "(bad key length %"PRIuSIZE", expected %d)(",
1028 nl_attr_get_size(a), expected_len);
1029 }
1030 format_generic_odp_key(a, ds);
1031 if (ma) {
1032 ds_put_char(ds, '/');
1033 if (bad_mask_len) {
1034 ds_put_format(ds, "(bad mask length %"PRIuSIZE", expected %d)(",
1035 nl_attr_get_size(ma), expected_len);
1036 }
1037 format_generic_odp_key(ma, ds);
1038 }
1039 ds_put_char(ds, ')');
1040 return;
1041 }
1042 }
1043 }
1044
1045 ds_put_char(ds, '(');
1046 switch (attr) {
1047 case OVS_KEY_ATTR_ENCAP:
1048 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
1049 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
1050 nl_attr_get(ma), nl_attr_get_size(ma), NULL, ds,
1051 verbose);
1052 } else if (nl_attr_get_size(a)) {
1053 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, NULL,
1054 ds, verbose);
1055 }
1056 break;
1057
1058 case OVS_KEY_ATTR_PRIORITY:
1059 case OVS_KEY_ATTR_SKB_MARK:
1060 case OVS_KEY_ATTR_DP_HASH:
1061 case OVS_KEY_ATTR_RECIRC_ID:
1062 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
1063 if (!is_exact) {
1064 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1065 }
1066 break;
1067
1068 case OVS_KEY_ATTR_TUNNEL:
1069 memset(&tun_key, 0, sizeof tun_key);
1070 if (odp_tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
1071 ds_put_format(ds, "error");
1072 } else if (!is_exact) {
1073 struct flow_tnl tun_mask;
1074
1075 memset(&tun_mask, 0, sizeof tun_mask);
1076 odp_tun_key_from_attr(ma, &tun_mask);
1077 ds_put_format(ds, "tun_id=%#"PRIx64"/%#"PRIx64
1078 ",src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1079 ",tos=%#"PRIx8"/%#"PRIx8",ttl=%"PRIu8"/%#"PRIx8
1080 ",flags(",
1081 ntohll(tun_key.tun_id), ntohll(tun_mask.tun_id),
1082 IP_ARGS(tun_key.ip_src), IP_ARGS(tun_mask.ip_src),
1083 IP_ARGS(tun_key.ip_dst), IP_ARGS(tun_mask.ip_dst),
1084 tun_key.ip_tos, tun_mask.ip_tos,
1085 tun_key.ip_ttl, tun_mask.ip_ttl);
1086
1087 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1088
1089 /* XXX This code is correct, but enabling it would break the unit
1090 test. Disable it for now until the input parser is fixed.
1091
1092 ds_put_char(ds, '/');
1093 format_flags(ds, flow_tun_flag_to_string, tun_mask.flags, ',');
1094 */
1095 ds_put_char(ds, ')');
1096 } else {
1097 ds_put_format(ds, "tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
1098 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
1099 ntohll(tun_key.tun_id),
1100 IP_ARGS(tun_key.ip_src),
1101 IP_ARGS(tun_key.ip_dst),
1102 tun_key.ip_tos, tun_key.ip_ttl);
1103
1104 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1105 ds_put_char(ds, ')');
1106 }
1107 break;
1108
1109 case OVS_KEY_ATTR_IN_PORT:
1110 if (portno_names && verbose && is_exact) {
1111 char *name = odp_portno_names_get(portno_names,
1112 u32_to_odp(nl_attr_get_u32(a)));
1113 if (name) {
1114 ds_put_format(ds, "%s", name);
1115 } else {
1116 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1117 }
1118 } else {
1119 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1120 if (!is_exact) {
1121 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1122 }
1123 }
1124 break;
1125
1126 case OVS_KEY_ATTR_ETHERNET:
1127 if (!is_exact) {
1128 const struct ovs_key_ethernet *eth_mask = nl_attr_get(ma);
1129 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1130
1131 ds_put_format(ds, "src="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1132 ",dst="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1133 ETH_ADDR_ARGS(eth_key->eth_src),
1134 ETH_ADDR_ARGS(eth_mask->eth_src),
1135 ETH_ADDR_ARGS(eth_key->eth_dst),
1136 ETH_ADDR_ARGS(eth_mask->eth_dst));
1137 } else {
1138 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1139
1140 ds_put_format(ds, "src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT,
1141 ETH_ADDR_ARGS(eth_key->eth_src),
1142 ETH_ADDR_ARGS(eth_key->eth_dst));
1143 }
1144 break;
1145
1146 case OVS_KEY_ATTR_VLAN:
1147 {
1148 ovs_be16 vlan_tci = nl_attr_get_be16(a);
1149 if (!is_exact) {
1150 ovs_be16 mask = nl_attr_get_be16(ma);
1151 ds_put_format(ds, "vid=%"PRIu16"/0x%"PRIx16",pcp=%d/0x%x,cfi=%d/%d",
1152 vlan_tci_to_vid(vlan_tci),
1153 vlan_tci_to_vid(mask),
1154 vlan_tci_to_pcp(vlan_tci),
1155 vlan_tci_to_pcp(mask),
1156 vlan_tci_to_cfi(vlan_tci),
1157 vlan_tci_to_cfi(mask));
1158 } else {
1159 format_vlan_tci(ds, vlan_tci);
1160 }
1161 }
1162 break;
1163
1164 case OVS_KEY_ATTR_MPLS: {
1165 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
1166 const struct ovs_key_mpls *mpls_mask = NULL;
1167 size_t size = nl_attr_get_size(a);
1168
1169 if (!size || size % sizeof *mpls_key) {
1170 ds_put_format(ds, "(bad key length %"PRIuSIZE")",
1171 nl_attr_get_size(a));
1172 return;
1173 }
1174 if (!is_exact) {
1175 mpls_mask = nl_attr_get(ma);
1176 if (nl_attr_get_size(a) != nl_attr_get_size(ma)) {
1177 ds_put_format(ds, "(key length %"PRIuSIZE" != "
1178 "mask length %"PRIuSIZE")",
1179 nl_attr_get_size(a), nl_attr_get_size(ma));
1180 return;
1181 }
1182 }
1183 format_mpls(ds, mpls_key, mpls_mask, size / sizeof *mpls_key);
1184 break;
1185 }
1186
1187 case OVS_KEY_ATTR_ETHERTYPE:
1188 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
1189 if (!is_exact) {
1190 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
1191 }
1192 break;
1193
1194 case OVS_KEY_ATTR_IPV4:
1195 if (!is_exact) {
1196 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1197 const struct ovs_key_ipv4 *ipv4_mask = nl_attr_get(ma);
1198
1199 ds_put_format(ds, "src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1200 ",proto=%"PRIu8"/%#"PRIx8",tos=%#"PRIx8"/%#"PRIx8
1201 ",ttl=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1202 IP_ARGS(ipv4_key->ipv4_src),
1203 IP_ARGS(ipv4_mask->ipv4_src),
1204 IP_ARGS(ipv4_key->ipv4_dst),
1205 IP_ARGS(ipv4_mask->ipv4_dst),
1206 ipv4_key->ipv4_proto, ipv4_mask->ipv4_proto,
1207 ipv4_key->ipv4_tos, ipv4_mask->ipv4_tos,
1208 ipv4_key->ipv4_ttl, ipv4_mask->ipv4_ttl,
1209 ovs_frag_type_to_string(ipv4_key->ipv4_frag),
1210 ipv4_mask->ipv4_frag);
1211 } else {
1212 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1213
1214 ds_put_format(ds, "src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
1215 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s",
1216 IP_ARGS(ipv4_key->ipv4_src),
1217 IP_ARGS(ipv4_key->ipv4_dst),
1218 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
1219 ipv4_key->ipv4_ttl,
1220 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
1221 }
1222 break;
1223
1224 case OVS_KEY_ATTR_IPV6:
1225 if (!is_exact) {
1226 const struct ovs_key_ipv6 *ipv6_key, *ipv6_mask;
1227 char src_str[INET6_ADDRSTRLEN];
1228 char dst_str[INET6_ADDRSTRLEN];
1229 char src_mask[INET6_ADDRSTRLEN];
1230 char dst_mask[INET6_ADDRSTRLEN];
1231
1232 ipv6_key = nl_attr_get(a);
1233 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1234 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1235
1236 ipv6_mask = nl_attr_get(ma);
1237 inet_ntop(AF_INET6, ipv6_mask->ipv6_src, src_mask, sizeof src_mask);
1238 inet_ntop(AF_INET6, ipv6_mask->ipv6_dst, dst_mask, sizeof dst_mask);
1239
1240 ds_put_format(ds, "src=%s/%s,dst=%s/%s,label=%#"PRIx32"/%#"PRIx32
1241 ",proto=%"PRIu8"/%#"PRIx8",tclass=%#"PRIx8"/%#"PRIx8
1242 ",hlimit=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1243 src_str, src_mask, dst_str, dst_mask,
1244 ntohl(ipv6_key->ipv6_label),
1245 ntohl(ipv6_mask->ipv6_label),
1246 ipv6_key->ipv6_proto, ipv6_mask->ipv6_proto,
1247 ipv6_key->ipv6_tclass, ipv6_mask->ipv6_tclass,
1248 ipv6_key->ipv6_hlimit, ipv6_mask->ipv6_hlimit,
1249 ovs_frag_type_to_string(ipv6_key->ipv6_frag),
1250 ipv6_mask->ipv6_frag);
1251 } else {
1252 const struct ovs_key_ipv6 *ipv6_key;
1253 char src_str[INET6_ADDRSTRLEN];
1254 char dst_str[INET6_ADDRSTRLEN];
1255
1256 ipv6_key = nl_attr_get(a);
1257 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1258 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1259
1260 ds_put_format(ds, "src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
1261 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s",
1262 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
1263 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
1264 ipv6_key->ipv6_hlimit,
1265 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
1266 }
1267 break;
1268
1269 case OVS_KEY_ATTR_TCP:
1270 if (!is_exact) {
1271 const struct ovs_key_tcp *tcp_mask = nl_attr_get(ma);
1272 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1273
1274 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1275 ",dst=%"PRIu16"/%#"PRIx16,
1276 ntohs(tcp_key->tcp_src), ntohs(tcp_mask->tcp_src),
1277 ntohs(tcp_key->tcp_dst), ntohs(tcp_mask->tcp_dst));
1278 } else {
1279 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1280
1281 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1282 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
1283 }
1284 break;
1285
1286 case OVS_KEY_ATTR_TCP_FLAGS:
1287 ds_put_format(ds, "0x%03"PRIx16, ntohs(nl_attr_get_be16(a)));
1288 if (!is_exact) {
1289 ds_put_format(ds, "/0x%03"PRIx16, ntohs(nl_attr_get_be16(ma)));
1290 }
1291 break;
1292
1293 case OVS_KEY_ATTR_UDP:
1294 if (!is_exact) {
1295 const struct ovs_key_udp *udp_mask = nl_attr_get(ma);
1296 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1297
1298 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1299 ",dst=%"PRIu16"/%#"PRIx16,
1300 ntohs(udp_key->udp_src), ntohs(udp_mask->udp_src),
1301 ntohs(udp_key->udp_dst), ntohs(udp_mask->udp_dst));
1302 } else {
1303 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1304
1305 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1306 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
1307 }
1308 break;
1309
1310 case OVS_KEY_ATTR_SCTP:
1311 if (ma) {
1312 const struct ovs_key_sctp *sctp_mask = nl_attr_get(ma);
1313 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1314
1315 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1316 ",dst=%"PRIu16"/%#"PRIx16,
1317 ntohs(sctp_key->sctp_src), ntohs(sctp_mask->sctp_src),
1318 ntohs(sctp_key->sctp_dst), ntohs(sctp_mask->sctp_dst));
1319 } else {
1320 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1321
1322 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1323 ntohs(sctp_key->sctp_src), ntohs(sctp_key->sctp_dst));
1324 }
1325 break;
1326
1327 case OVS_KEY_ATTR_ICMP:
1328 if (!is_exact) {
1329 const struct ovs_key_icmp *icmp_mask = nl_attr_get(ma);
1330 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1331
1332 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1333 icmp_key->icmp_type, icmp_mask->icmp_type,
1334 icmp_key->icmp_code, icmp_mask->icmp_code);
1335 } else {
1336 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1337
1338 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1339 icmp_key->icmp_type, icmp_key->icmp_code);
1340 }
1341 break;
1342
1343 case OVS_KEY_ATTR_ICMPV6:
1344 if (!is_exact) {
1345 const struct ovs_key_icmpv6 *icmpv6_mask = nl_attr_get(ma);
1346 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1347
1348 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1349 icmpv6_key->icmpv6_type, icmpv6_mask->icmpv6_type,
1350 icmpv6_key->icmpv6_code, icmpv6_mask->icmpv6_code);
1351 } else {
1352 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1353
1354 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1355 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
1356 }
1357 break;
1358
1359 case OVS_KEY_ATTR_ARP:
1360 if (!is_exact) {
1361 const struct ovs_key_arp *arp_mask = nl_attr_get(ma);
1362 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1363
1364 ds_put_format(ds, "sip="IP_FMT"/"IP_FMT",tip="IP_FMT"/"IP_FMT
1365 ",op=%"PRIu16"/%#"PRIx16
1366 ",sha="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1367 ",tha="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1368 IP_ARGS(arp_key->arp_sip),
1369 IP_ARGS(arp_mask->arp_sip),
1370 IP_ARGS(arp_key->arp_tip),
1371 IP_ARGS(arp_mask->arp_tip),
1372 ntohs(arp_key->arp_op), ntohs(arp_mask->arp_op),
1373 ETH_ADDR_ARGS(arp_key->arp_sha),
1374 ETH_ADDR_ARGS(arp_mask->arp_sha),
1375 ETH_ADDR_ARGS(arp_key->arp_tha),
1376 ETH_ADDR_ARGS(arp_mask->arp_tha));
1377 } else {
1378 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1379
1380 ds_put_format(ds, "sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
1381 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT,
1382 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
1383 ntohs(arp_key->arp_op),
1384 ETH_ADDR_ARGS(arp_key->arp_sha),
1385 ETH_ADDR_ARGS(arp_key->arp_tha));
1386 }
1387 break;
1388
1389 case OVS_KEY_ATTR_ND: {
1390 const struct ovs_key_nd *nd_key, *nd_mask = NULL;
1391 char target[INET6_ADDRSTRLEN];
1392
1393 nd_key = nl_attr_get(a);
1394 if (!is_exact) {
1395 nd_mask = nl_attr_get(ma);
1396 }
1397
1398 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
1399 ds_put_format(ds, "target=%s", target);
1400 if (!is_exact) {
1401 inet_ntop(AF_INET6, nd_mask->nd_target, target, sizeof target);
1402 ds_put_format(ds, "/%s", target);
1403 }
1404
1405 if (!eth_addr_is_zero(nd_key->nd_sll)) {
1406 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
1407 ETH_ADDR_ARGS(nd_key->nd_sll));
1408 if (!is_exact) {
1409 ds_put_format(ds, "/"ETH_ADDR_FMT,
1410 ETH_ADDR_ARGS(nd_mask->nd_sll));
1411 }
1412 }
1413 if (!eth_addr_is_zero(nd_key->nd_tll)) {
1414 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
1415 ETH_ADDR_ARGS(nd_key->nd_tll));
1416 if (!is_exact) {
1417 ds_put_format(ds, "/"ETH_ADDR_FMT,
1418 ETH_ADDR_ARGS(nd_mask->nd_tll));
1419 }
1420 }
1421 break;
1422 }
1423 case OVS_KEY_ATTR_UNSPEC:
1424 case __OVS_KEY_ATTR_MAX:
1425 default:
1426 format_generic_odp_key(a, ds);
1427 if (!is_exact) {
1428 ds_put_char(ds, '/');
1429 format_generic_odp_key(ma, ds);
1430 }
1431 break;
1432 }
1433 ds_put_char(ds, ')');
1434 }
1435
1436 static struct nlattr *
1437 generate_all_wildcard_mask(struct ofpbuf *ofp, const struct nlattr *key)
1438 {
1439 const struct nlattr *a;
1440 unsigned int left;
1441 int type = nl_attr_type(key);
1442 int size = nl_attr_get_size(key);
1443
1444 if (odp_flow_key_attr_len(type) >=0) {
1445 nl_msg_put_unspec_zero(ofp, type, size);
1446 } else {
1447 size_t nested_mask;
1448
1449 nested_mask = nl_msg_start_nested(ofp, type);
1450 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
1451 generate_all_wildcard_mask(ofp, nl_attr_get(a));
1452 }
1453 nl_msg_end_nested(ofp, nested_mask);
1454 }
1455
1456 return ofpbuf_base(ofp);
1457 }
1458
1459 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1460 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
1461 * 'mask_len' bytes of 'mask' which apply to 'key'. If 'portno_names' is
1462 * non-null and 'verbose' is true, translates odp port number to its name. */
1463 void
1464 odp_flow_format(const struct nlattr *key, size_t key_len,
1465 const struct nlattr *mask, size_t mask_len,
1466 const struct hmap *portno_names, struct ds *ds, bool verbose)
1467 {
1468 if (key_len) {
1469 const struct nlattr *a;
1470 unsigned int left;
1471 bool has_ethtype_key = false;
1472 const struct nlattr *ma = NULL;
1473 struct ofpbuf ofp;
1474 bool first_field = true;
1475
1476 ofpbuf_init(&ofp, 100);
1477 NL_ATTR_FOR_EACH (a, left, key, key_len) {
1478 bool is_nested_attr;
1479 bool is_wildcard = false;
1480 int attr_type = nl_attr_type(a);
1481
1482 if (attr_type == OVS_KEY_ATTR_ETHERTYPE) {
1483 has_ethtype_key = true;
1484 }
1485
1486 is_nested_attr = (odp_flow_key_attr_len(attr_type) == -2);
1487
1488 if (mask && mask_len) {
1489 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
1490 is_wildcard = ma ? odp_mask_attr_is_wildcard(ma) : true;
1491 }
1492
1493 if (verbose || !is_wildcard || is_nested_attr) {
1494 if (is_wildcard && !ma) {
1495 ma = generate_all_wildcard_mask(&ofp, a);
1496 }
1497 if (!first_field) {
1498 ds_put_char(ds, ',');
1499 }
1500 format_odp_key_attr(a, ma, portno_names, ds, verbose);
1501 first_field = false;
1502 }
1503 ofpbuf_clear(&ofp);
1504 }
1505 ofpbuf_uninit(&ofp);
1506
1507 if (left) {
1508 int i;
1509
1510 if (left == key_len) {
1511 ds_put_cstr(ds, "<empty>");
1512 }
1513 ds_put_format(ds, ",***%u leftover bytes*** (", left);
1514 for (i = 0; i < left; i++) {
1515 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
1516 }
1517 ds_put_char(ds, ')');
1518 }
1519 if (!has_ethtype_key) {
1520 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
1521 if (ma) {
1522 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
1523 ntohs(nl_attr_get_be16(ma)));
1524 }
1525 }
1526 } else {
1527 ds_put_cstr(ds, "<empty>");
1528 }
1529 }
1530
1531 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1532 * OVS_KEY_ATTR_* attributes in 'key'. */
1533 void
1534 odp_flow_key_format(const struct nlattr *key,
1535 size_t key_len, struct ds *ds)
1536 {
1537 odp_flow_format(key, key_len, NULL, 0, NULL, ds, true);
1538 }
1539
1540 static void
1541 put_nd(struct ovs_key_nd* nd_key, const uint8_t *nd_sll,
1542 const uint8_t *nd_tll, struct ofpbuf *key)
1543 {
1544 if (nd_sll) {
1545 memcpy(nd_key->nd_sll, nd_sll, ETH_ADDR_LEN);
1546 }
1547
1548 if (nd_tll) {
1549 memcpy(nd_key->nd_tll, nd_tll, ETH_ADDR_LEN);
1550 }
1551
1552 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, nd_key, sizeof *nd_key);
1553 }
1554
1555 static int
1556 put_nd_key(int n, const char *nd_target_s, const uint8_t *nd_sll,
1557 const uint8_t *nd_tll, struct ofpbuf *key)
1558 {
1559 struct ovs_key_nd nd_key;
1560
1561 memset(&nd_key, 0, sizeof nd_key);
1562
1563 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
1564 return -EINVAL;
1565 }
1566
1567 put_nd(&nd_key, nd_sll, nd_tll, key);
1568 return n;
1569 }
1570
1571 static int
1572 put_nd_mask(int n, const char *nd_target_s,
1573 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *mask)
1574 {
1575 struct ovs_key_nd nd_mask;
1576
1577 memset(&nd_mask, 0xff, sizeof nd_mask);
1578
1579 if (strlen(nd_target_s) != 0 &&
1580 inet_pton(AF_INET6, nd_target_s, nd_mask.nd_target) != 1) {
1581 return -EINVAL;
1582 }
1583
1584 put_nd(&nd_mask, nd_sll, nd_tll, mask);
1585 return n;
1586 }
1587
1588 static bool
1589 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1590 {
1591 if (!strcasecmp(s, "no")) {
1592 *type = OVS_FRAG_TYPE_NONE;
1593 } else if (!strcasecmp(s, "first")) {
1594 *type = OVS_FRAG_TYPE_FIRST;
1595 } else if (!strcasecmp(s, "later")) {
1596 *type = OVS_FRAG_TYPE_LATER;
1597 } else {
1598 return false;
1599 }
1600 return true;
1601 }
1602
1603 static ovs_be32
1604 mpls_lse_from_components(int mpls_label, int mpls_tc, int mpls_ttl, int mpls_bos)
1605 {
1606 return (htonl((mpls_label << MPLS_LABEL_SHIFT) |
1607 (mpls_tc << MPLS_TC_SHIFT) |
1608 (mpls_ttl << MPLS_TTL_SHIFT) |
1609 (mpls_bos << MPLS_BOS_SHIFT)));
1610 }
1611
1612 static int
1613 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
1614 struct ofpbuf *key, struct ofpbuf *mask)
1615 {
1616 {
1617 uint32_t priority;
1618 uint32_t priority_mask;
1619 int n = -1;
1620
1621 if (mask && ovs_scan(s, "skb_priority(%"SCNi32"/%"SCNi32")%n",
1622 &priority, &priority_mask, &n)) {
1623 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1624 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, priority_mask);
1625 return n;
1626 } else if (ovs_scan(s, "skb_priority(%"SCNi32")%n", &priority, &n)) {
1627 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1628 if (mask) {
1629 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, UINT32_MAX);
1630 }
1631 return n;
1632 }
1633 }
1634
1635 {
1636 uint32_t mark;
1637 uint32_t mark_mask;
1638 int n = -1;
1639
1640 if (mask && ovs_scan(s, "skb_mark(%"SCNi32"/%"SCNi32")%n", &mark,
1641 &mark_mask, &n)) {
1642 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1643 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, mark_mask);
1644 return n;
1645 } else if (ovs_scan(s, "skb_mark(%"SCNi32")%n", &mark, &n)) {
1646 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1647 if (mask) {
1648 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, UINT32_MAX);
1649 }
1650 return n;
1651 }
1652 }
1653
1654 {
1655 uint32_t recirc_id;
1656 int n = -1;
1657
1658 if (ovs_scan(s, "recirc_id(%"SCNi32")%n", &recirc_id, &n)) {
1659 nl_msg_put_u32(key, OVS_KEY_ATTR_RECIRC_ID, recirc_id);
1660 nl_msg_put_u32(mask, OVS_KEY_ATTR_RECIRC_ID, UINT32_MAX);
1661 return n;
1662 }
1663 }
1664
1665 {
1666 uint32_t dp_hash;
1667 uint32_t dp_hash_mask;
1668 int n = -1;
1669
1670 if (mask && ovs_scan(s, "dp_hash(%"SCNi32"/%"SCNi32")%n", &dp_hash,
1671 &dp_hash_mask, &n)) {
1672 nl_msg_put_u32(key, OVS_KEY_ATTR_DP_HASH, dp_hash);
1673 nl_msg_put_u32(mask, OVS_KEY_ATTR_DP_HASH, dp_hash_mask);
1674 return n;
1675 } else if (ovs_scan(s, "dp_hash(%"SCNi32")%n", &dp_hash, &n)) {
1676 nl_msg_put_u32(key, OVS_KEY_ATTR_DP_HASH, dp_hash);
1677 if (mask) {
1678 nl_msg_put_u32(mask, OVS_KEY_ATTR_DP_HASH, UINT32_MAX);
1679 }
1680 return n;
1681 }
1682 }
1683
1684 {
1685 uint64_t tun_id, tun_id_mask;
1686 struct flow_tnl tun_key, tun_key_mask;
1687 int n = -1;
1688
1689 if (mask && ovs_scan(s, "tunnel(tun_id=%"SCNi64"/%"SCNi64","
1690 "src="IP_SCAN_FMT"/"IP_SCAN_FMT",dst="IP_SCAN_FMT
1691 "/"IP_SCAN_FMT",tos=%"SCNi8"/%"SCNi8","
1692 "ttl=%"SCNi8"/%"SCNi8",flags%n",
1693 &tun_id, &tun_id_mask,
1694 IP_SCAN_ARGS(&tun_key.ip_src),
1695 IP_SCAN_ARGS(&tun_key_mask.ip_src),
1696 IP_SCAN_ARGS(&tun_key.ip_dst),
1697 IP_SCAN_ARGS(&tun_key_mask.ip_dst),
1698 &tun_key.ip_tos, &tun_key_mask.ip_tos,
1699 &tun_key.ip_ttl, &tun_key_mask.ip_ttl, &n)) {
1700 int res;
1701 uint32_t flags;
1702
1703 tun_key.tun_id = htonll(tun_id);
1704 tun_key_mask.tun_id = htonll(tun_id_mask);
1705 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1706 tun_key.flags = flags;
1707 tun_key_mask.flags = UINT16_MAX;
1708
1709 if (res < 0) {
1710 return res;
1711 }
1712 n += res;
1713 if (s[n] != ')') {
1714 return -EINVAL;
1715 }
1716 n++;
1717 tun_key_to_attr(key, &tun_key);
1718 if (mask) {
1719 tun_key_to_attr(mask, &tun_key_mask);
1720 }
1721 return n;
1722 } else if (ovs_scan(s, "tunnel(tun_id=%"SCNi64","
1723 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1724 ",tos=%"SCNi8",ttl=%"SCNi8",flags%n", &tun_id,
1725 IP_SCAN_ARGS(&tun_key.ip_src),
1726 IP_SCAN_ARGS(&tun_key.ip_dst),
1727 &tun_key.ip_tos, &tun_key.ip_ttl, &n)) {
1728 int res;
1729 uint32_t flags;
1730
1731 tun_key.tun_id = htonll(tun_id);
1732 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1733 tun_key.flags = flags;
1734
1735 if (res < 0) {
1736 return res;
1737 }
1738 n += res;
1739 if (s[n] != ')') {
1740 return -EINVAL;
1741 }
1742 n++;
1743 tun_key_to_attr(key, &tun_key);
1744
1745 if (mask) {
1746 memset(&tun_key, 0xff, sizeof tun_key);
1747 tun_key_to_attr(mask, &tun_key);
1748 }
1749 return n;
1750 }
1751 }
1752
1753 {
1754 uint32_t in_port;
1755 uint32_t in_port_mask;
1756 int n = -1;
1757
1758 if (mask && ovs_scan(s, "in_port(%"SCNi32"/%"SCNi32")%n",
1759 &in_port, &in_port_mask, &n)) {
1760 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1761 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, in_port_mask);
1762 return n;
1763 } else if (ovs_scan(s, "in_port(%"SCNi32")%n", &in_port, &n)) {
1764 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1765 if (mask) {
1766 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1767 }
1768 return n;
1769 }
1770 }
1771
1772
1773 if (port_names && !strncmp(s, "in_port(", 8)) {
1774 const char *name;
1775 const struct simap_node *node;
1776 int name_len;
1777
1778 name = s + 8;
1779 name_len = strcspn(name, ")");
1780 node = simap_find_len(port_names, name, name_len);
1781 if (node) {
1782 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1783
1784 if (mask) {
1785 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1786 }
1787 return 8 + name_len + 1;
1788 }
1789 }
1790
1791 {
1792 struct ovs_key_ethernet eth_key;
1793 struct ovs_key_ethernet eth_key_mask;
1794 int n = -1;
1795
1796 if (mask && ovs_scan(s,
1797 "eth(src="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
1798 "dst="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
1799 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1800 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_src),
1801 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst),
1802 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_dst), &n)) {
1803 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1804 &eth_key, sizeof eth_key);
1805 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1806 &eth_key_mask, sizeof eth_key_mask);
1807 return n;
1808 } else if (ovs_scan(s, "eth(src="ETH_ADDR_SCAN_FMT","
1809 "dst="ETH_ADDR_SCAN_FMT")%n",
1810 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1811 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n)) {
1812 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1813 &eth_key, sizeof eth_key);
1814
1815 if (mask) {
1816 memset(&eth_key, 0xff, sizeof eth_key);
1817 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1818 &eth_key, sizeof eth_key);
1819 }
1820 return n;
1821 }
1822 }
1823
1824 {
1825 int vid, vid_mask;
1826 int pcp, pcp_mask;
1827 int cfi, cfi_mask;
1828 int n = -1;
1829
1830 if (mask && ovs_scan(s, "vlan(vid=%i/%i,pcp=%i/%i)%n",
1831 &vid, &vid_mask, &pcp, &pcp_mask, &n)) {
1832 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1833 htons((vid << VLAN_VID_SHIFT) |
1834 (pcp << VLAN_PCP_SHIFT) |
1835 VLAN_CFI));
1836 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1837 htons((vid_mask << VLAN_VID_SHIFT) |
1838 (pcp_mask << VLAN_PCP_SHIFT) |
1839 (1 << VLAN_CFI_SHIFT)));
1840 return n;
1841 } else if (ovs_scan(s, "vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)) {
1842 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1843 htons((vid << VLAN_VID_SHIFT) |
1844 (pcp << VLAN_PCP_SHIFT) |
1845 VLAN_CFI));
1846 if (mask) {
1847 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1848 }
1849 return n;
1850 } else if (mask
1851 && ovs_scan(s, "vlan(vid=%i/%i,pcp=%i/%i,cfi=%i/%i)%n",
1852 &vid, &vid_mask, &pcp, &pcp_mask,
1853 &cfi, &cfi_mask, &n)) {
1854 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1855 htons((vid << VLAN_VID_SHIFT) |
1856 (pcp << VLAN_PCP_SHIFT) |
1857 (cfi ? VLAN_CFI : 0)));
1858 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1859 htons((vid_mask << VLAN_VID_SHIFT) |
1860 (pcp_mask << VLAN_PCP_SHIFT) |
1861 (cfi_mask << VLAN_CFI_SHIFT)));
1862 return n;
1863 } else if (ovs_scan(s, "vlan(vid=%i,pcp=%i,cfi=%i)%n",
1864 &vid, &pcp, &cfi, &n)) {
1865 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1866 htons((vid << VLAN_VID_SHIFT) |
1867 (pcp << VLAN_PCP_SHIFT) |
1868 (cfi ? VLAN_CFI : 0)));
1869 if (mask) {
1870 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1871 }
1872 return n;
1873 }
1874 }
1875
1876 {
1877 int eth_type;
1878 int eth_type_mask;
1879 int n = -1;
1880
1881 if (mask && ovs_scan(s, "eth_type(%i/%i)%n",
1882 &eth_type, &eth_type_mask, &n)) {
1883 if (eth_type != 0) {
1884 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1885 }
1886 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type_mask));
1887 return n;
1888 } else if (ovs_scan(s, "eth_type(%i)%n", &eth_type, &n)) {
1889 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1890 if (mask) {
1891 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
1892 }
1893 return n;
1894 }
1895 }
1896
1897 {
1898 int label, tc, ttl, bos;
1899 int label_mask, tc_mask, ttl_mask, bos_mask;
1900 int n = -1;
1901
1902 if (mask && ovs_scan(s, "mpls(label=%i/%i,tc=%i/%i,"
1903 "ttl=%i/%i,bos=%i/%i)%n",
1904 &label, &label_mask, &tc, &tc_mask,
1905 &ttl, &ttl_mask, &bos, &bos_mask, &n)) {
1906 struct ovs_key_mpls *mpls, *mpls_mask;
1907
1908 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1909 sizeof *mpls);
1910 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1911
1912 mpls_mask = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1913 sizeof *mpls_mask);
1914 mpls_mask->mpls_lse = mpls_lse_from_components(
1915 label_mask, tc_mask, ttl_mask, bos_mask);
1916 return n;
1917 } else if (ovs_scan(s, "mpls(label=%i,tc=%i,ttl=%i,bos=%i)%n",
1918 &label, &tc, &ttl, &bos, &n)) {
1919 struct ovs_key_mpls *mpls;
1920
1921 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1922 sizeof *mpls);
1923 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1924 if (mask) {
1925 mpls = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1926 sizeof *mpls);
1927 mpls->mpls_lse = OVS_BE32_MAX;
1928 }
1929 return n;
1930 }
1931 }
1932
1933
1934 {
1935 struct ovs_key_ipv4 ipv4_key;
1936 struct ovs_key_ipv4 ipv4_mask;
1937
1938 char frag[8];
1939 enum ovs_frag_type ipv4_frag;
1940 int n = -1;
1941
1942 if (mask
1943 && ovs_scan(s, "ipv4(src="IP_SCAN_FMT"/"IP_SCAN_FMT","
1944 "dst="IP_SCAN_FMT"/"IP_SCAN_FMT","
1945 "proto=%"SCNi8"/%"SCNi8","
1946 "tos=%"SCNi8"/%"SCNi8","
1947 "ttl=%"SCNi8"/%"SCNi8","
1948 "frag=%7[a-z]/%"SCNi8")%n",
1949 IP_SCAN_ARGS(&ipv4_key.ipv4_src),
1950 IP_SCAN_ARGS(&ipv4_mask.ipv4_src),
1951 IP_SCAN_ARGS(&ipv4_key.ipv4_dst),
1952 IP_SCAN_ARGS(&ipv4_mask.ipv4_dst),
1953 &ipv4_key.ipv4_proto, &ipv4_mask.ipv4_proto,
1954 &ipv4_key.ipv4_tos, &ipv4_mask.ipv4_tos,
1955 &ipv4_key.ipv4_ttl, &ipv4_mask.ipv4_ttl,
1956 frag, &ipv4_mask.ipv4_frag, &n)
1957 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1958 ipv4_key.ipv4_frag = ipv4_frag;
1959 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1960 &ipv4_key, sizeof ipv4_key);
1961
1962 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1963 &ipv4_mask, sizeof ipv4_mask);
1964 return n;
1965 } else if (ovs_scan(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1966 "proto=%"SCNi8",tos=%"SCNi8",ttl=%"SCNi8","
1967 "frag=%7[a-z])%n",
1968 IP_SCAN_ARGS(&ipv4_key.ipv4_src),
1969 IP_SCAN_ARGS(&ipv4_key.ipv4_dst),
1970 &ipv4_key.ipv4_proto,
1971 &ipv4_key.ipv4_tos,
1972 &ipv4_key.ipv4_ttl,
1973 frag, &n) > 0
1974 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1975 ipv4_key.ipv4_frag = ipv4_frag;
1976 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1977 &ipv4_key, sizeof ipv4_key);
1978
1979 if (mask) {
1980 memset(&ipv4_key, 0xff, sizeof ipv4_key);
1981 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1982 &ipv4_key, sizeof ipv4_key);
1983 }
1984 return n;
1985 }
1986 }
1987
1988 {
1989 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1990 char ipv6_src_mask_s[IPV6_SCAN_LEN + 1];
1991 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1992 char ipv6_dst_mask_s[IPV6_SCAN_LEN + 1];
1993 int ipv6_label, ipv6_label_mask;
1994 int ipv6_proto, ipv6_proto_mask;
1995 int ipv6_tclass, ipv6_tclass_mask;
1996 int ipv6_hlimit, ipv6_hlimit_mask;
1997 char frag[8];
1998 enum ovs_frag_type ipv6_frag;
1999 int ipv6_frag_mask;
2000 int n = -1;
2001
2002 if (mask && ovs_scan(s, "ipv6(src="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT",dst="
2003 IPV6_SCAN_FMT"/"IPV6_SCAN_FMT","
2004 "label=%i/%i,proto=%i/%i,tclass=%i/%i,"
2005 "hlimit=%i/%i,frag=%7[a-z]/%i)%n",
2006 ipv6_src_s, ipv6_src_mask_s,
2007 ipv6_dst_s, ipv6_dst_mask_s,
2008 &ipv6_label, &ipv6_label_mask, &ipv6_proto,
2009 &ipv6_proto_mask, &ipv6_tclass, &ipv6_tclass_mask,
2010 &ipv6_hlimit, &ipv6_hlimit_mask, frag,
2011 &ipv6_frag_mask, &n)
2012 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
2013 struct ovs_key_ipv6 ipv6_key;
2014 struct ovs_key_ipv6 ipv6_mask;
2015
2016 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
2017 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1 ||
2018 inet_pton(AF_INET6, ipv6_src_mask_s, &ipv6_mask.ipv6_src) != 1 ||
2019 inet_pton(AF_INET6, ipv6_dst_mask_s, &ipv6_mask.ipv6_dst) != 1) {
2020 return -EINVAL;
2021 }
2022
2023 ipv6_key.ipv6_label = htonl(ipv6_label);
2024 ipv6_key.ipv6_proto = ipv6_proto;
2025 ipv6_key.ipv6_tclass = ipv6_tclass;
2026 ipv6_key.ipv6_hlimit = ipv6_hlimit;
2027 ipv6_key.ipv6_frag = ipv6_frag;
2028 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
2029 &ipv6_key, sizeof ipv6_key);
2030
2031 ipv6_mask.ipv6_label = htonl(ipv6_label_mask);
2032 ipv6_mask.ipv6_proto = ipv6_proto_mask;
2033 ipv6_mask.ipv6_tclass = ipv6_tclass_mask;
2034 ipv6_mask.ipv6_hlimit = ipv6_hlimit_mask;
2035 ipv6_mask.ipv6_frag = ipv6_frag_mask;
2036 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
2037 &ipv6_mask, sizeof ipv6_mask);
2038 return n;
2039 } else if (ovs_scan(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
2040 "label=%i,proto=%i,tclass=%i,hlimit=%i,"
2041 "frag=%7[a-z])%n",
2042 ipv6_src_s, ipv6_dst_s, &ipv6_label,
2043 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n)
2044 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
2045 struct ovs_key_ipv6 ipv6_key;
2046
2047 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
2048 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
2049 return -EINVAL;
2050 }
2051 ipv6_key.ipv6_label = htonl(ipv6_label);
2052 ipv6_key.ipv6_proto = ipv6_proto;
2053 ipv6_key.ipv6_tclass = ipv6_tclass;
2054 ipv6_key.ipv6_hlimit = ipv6_hlimit;
2055 ipv6_key.ipv6_frag = ipv6_frag;
2056 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
2057 &ipv6_key, sizeof ipv6_key);
2058
2059 if (mask) {
2060 memset(&ipv6_key, 0xff, sizeof ipv6_key);
2061 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
2062 &ipv6_key, sizeof ipv6_key);
2063 }
2064 return n;
2065 }
2066 }
2067
2068 {
2069 int tcp_src;
2070 int tcp_dst;
2071 int tcp_src_mask;
2072 int tcp_dst_mask;
2073 int n = -1;
2074
2075 if (mask && ovs_scan(s, "tcp(src=%i/%i,dst=%i/%i)%n",
2076 &tcp_src, &tcp_src_mask, &tcp_dst,
2077 &tcp_dst_mask, &n)) {
2078 struct ovs_key_tcp tcp_key;
2079 struct ovs_key_tcp tcp_mask;
2080
2081 tcp_key.tcp_src = htons(tcp_src);
2082 tcp_key.tcp_dst = htons(tcp_dst);
2083 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2084
2085 tcp_mask.tcp_src = htons(tcp_src_mask);
2086 tcp_mask.tcp_dst = htons(tcp_dst_mask);
2087 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2088 &tcp_mask, sizeof tcp_mask);
2089 return n;
2090 } else if (ovs_scan(s, "tcp(src=%i,dst=%i)%n",
2091 &tcp_src, &tcp_dst, &n)) {
2092 struct ovs_key_tcp tcp_key;
2093
2094 tcp_key.tcp_src = htons(tcp_src);
2095 tcp_key.tcp_dst = htons(tcp_dst);
2096 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2097
2098 if (mask) {
2099 memset(&tcp_key, 0xff, sizeof tcp_key);
2100 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2101 &tcp_key, sizeof tcp_key);
2102 }
2103 return n;
2104 }
2105 }
2106
2107 {
2108 uint16_t tcp_flags, tcp_flags_mask;
2109 int n = -1;
2110
2111 if (mask && ovs_scan(s, "tcp_flags(%"SCNi16"/%"SCNi16")%n",
2112 &tcp_flags, &tcp_flags_mask, &n) > 0 && n > 0) {
2113 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2114 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags_mask));
2115 return n;
2116 } else if (ovs_scan(s, "tcp_flags(%"SCNi16")%n", &tcp_flags, &n)) {
2117 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2118 if (mask) {
2119 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS,
2120 htons(UINT16_MAX));
2121 }
2122 return n;
2123 }
2124 }
2125
2126 {
2127 int udp_src;
2128 int udp_dst;
2129 int udp_src_mask;
2130 int udp_dst_mask;
2131 int n = -1;
2132
2133 if (mask && ovs_scan(s, "udp(src=%i/%i,dst=%i/%i)%n",
2134 &udp_src, &udp_src_mask,
2135 &udp_dst, &udp_dst_mask, &n)) {
2136 struct ovs_key_udp udp_key;
2137 struct ovs_key_udp udp_mask;
2138
2139 udp_key.udp_src = htons(udp_src);
2140 udp_key.udp_dst = htons(udp_dst);
2141 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2142
2143 udp_mask.udp_src = htons(udp_src_mask);
2144 udp_mask.udp_dst = htons(udp_dst_mask);
2145 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP,
2146 &udp_mask, sizeof udp_mask);
2147 return n;
2148 }
2149 if (ovs_scan(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n)) {
2150 struct ovs_key_udp udp_key;
2151
2152 udp_key.udp_src = htons(udp_src);
2153 udp_key.udp_dst = htons(udp_dst);
2154 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2155
2156 if (mask) {
2157 memset(&udp_key, 0xff, sizeof udp_key);
2158 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2159 }
2160 return n;
2161 }
2162 }
2163
2164 {
2165 int sctp_src;
2166 int sctp_dst;
2167 int sctp_src_mask;
2168 int sctp_dst_mask;
2169 int n = -1;
2170
2171 if (mask && ovs_scan(s, "sctp(src=%i/%i,dst=%i/%i)%n",
2172 &sctp_src, &sctp_src_mask,
2173 &sctp_dst, &sctp_dst_mask, &n)) {
2174 struct ovs_key_sctp sctp_key;
2175 struct ovs_key_sctp sctp_mask;
2176
2177 sctp_key.sctp_src = htons(sctp_src);
2178 sctp_key.sctp_dst = htons(sctp_dst);
2179 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2180
2181 sctp_mask.sctp_src = htons(sctp_src_mask);
2182 sctp_mask.sctp_dst = htons(sctp_dst_mask);
2183 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP,
2184 &sctp_mask, sizeof sctp_mask);
2185 return n;
2186 }
2187 if (ovs_scan(s, "sctp(src=%i,dst=%i)%n", &sctp_src, &sctp_dst, &n)) {
2188 struct ovs_key_sctp sctp_key;
2189
2190 sctp_key.sctp_src = htons(sctp_src);
2191 sctp_key.sctp_dst = htons(sctp_dst);
2192 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2193
2194 if (mask) {
2195 memset(&sctp_key, 0xff, sizeof sctp_key);
2196 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2197 }
2198 return n;
2199 }
2200 }
2201
2202 {
2203 struct ovs_key_icmp icmp_key;
2204 struct ovs_key_icmp icmp_mask;
2205 int n = -1;
2206
2207 if (mask && ovs_scan(s, "icmp(type=%"SCNi8"/%"SCNi8","
2208 "code=%"SCNi8"/%"SCNi8")%n",
2209 &icmp_key.icmp_type, &icmp_mask.icmp_type,
2210 &icmp_key.icmp_code, &icmp_mask.icmp_code, &n)) {
2211 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2212 &icmp_key, sizeof icmp_key);
2213 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP,
2214 &icmp_mask, sizeof icmp_mask);
2215 return n;
2216 } else if (ovs_scan(s, "icmp(type=%"SCNi8",code=%"SCNi8")%n",
2217 &icmp_key.icmp_type, &icmp_key.icmp_code, &n)) {
2218 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2219 &icmp_key, sizeof icmp_key);
2220 if (mask) {
2221 memset(&icmp_key, 0xff, sizeof icmp_key);
2222 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP, &icmp_key,
2223 sizeof icmp_key);
2224 }
2225 return n;
2226 }
2227 }
2228
2229 {
2230 struct ovs_key_icmpv6 icmpv6_key;
2231 struct ovs_key_icmpv6 icmpv6_mask;
2232 int n = -1;
2233
2234 if (mask && ovs_scan(s, "icmpv6(type=%"SCNi8"/%"SCNi8","
2235 "code=%"SCNi8"/%"SCNi8")%n",
2236 &icmpv6_key.icmpv6_type, &icmpv6_mask.icmpv6_type,
2237 &icmpv6_key.icmpv6_code, &icmpv6_mask.icmpv6_code,
2238 &n)) {
2239 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2240 &icmpv6_key, sizeof icmpv6_key);
2241 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_mask,
2242 sizeof icmpv6_mask);
2243 return n;
2244 } else if (ovs_scan(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
2245 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,
2246 &n)) {
2247 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2248 &icmpv6_key, sizeof icmpv6_key);
2249
2250 if (mask) {
2251 memset(&icmpv6_key, 0xff, sizeof icmpv6_key);
2252 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_key,
2253 sizeof icmpv6_key);
2254 }
2255 return n;
2256 }
2257 }
2258
2259 {
2260 struct ovs_key_arp arp_key;
2261 struct ovs_key_arp arp_mask;
2262 uint16_t arp_op, arp_op_mask;
2263 int n = -1;
2264
2265 if (mask && ovs_scan(s, "arp(sip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2266 "tip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2267 "op=%"SCNi16"/%"SCNi16","
2268 "sha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2269 "tha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2270 IP_SCAN_ARGS(&arp_key.arp_sip),
2271 IP_SCAN_ARGS(&arp_mask.arp_sip),
2272 IP_SCAN_ARGS(&arp_key.arp_tip),
2273 IP_SCAN_ARGS(&arp_mask.arp_tip),
2274 &arp_op, &arp_op_mask,
2275 ETH_ADDR_SCAN_ARGS(arp_key.arp_sha),
2276 ETH_ADDR_SCAN_ARGS(arp_mask.arp_sha),
2277 ETH_ADDR_SCAN_ARGS(arp_key.arp_tha),
2278 ETH_ADDR_SCAN_ARGS(arp_mask.arp_tha), &n)) {
2279 arp_key.arp_op = htons(arp_op);
2280 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2281 arp_mask.arp_op = htons(arp_op_mask);
2282 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2283 &arp_mask, sizeof arp_mask);
2284 return n;
2285 } else if (ovs_scan(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
2286 "op=%"SCNi16",sha="ETH_ADDR_SCAN_FMT","
2287 "tha="ETH_ADDR_SCAN_FMT")%n",
2288 IP_SCAN_ARGS(&arp_key.arp_sip),
2289 IP_SCAN_ARGS(&arp_key.arp_tip),
2290 &arp_op,
2291 ETH_ADDR_SCAN_ARGS(arp_key.arp_sha),
2292 ETH_ADDR_SCAN_ARGS(arp_key.arp_tha), &n)) {
2293 arp_key.arp_op = htons(arp_op);
2294 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2295
2296 if (mask) {
2297 memset(&arp_key, 0xff, sizeof arp_key);
2298 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2299 &arp_key, sizeof arp_key);
2300 }
2301 return n;
2302 }
2303 }
2304
2305 {
2306 char nd_target_s[IPV6_SCAN_LEN + 1];
2307 char nd_target_mask_s[IPV6_SCAN_LEN + 1];
2308 uint8_t nd_sll[ETH_ADDR_LEN];
2309 uint8_t nd_sll_mask[ETH_ADDR_LEN];
2310 uint8_t nd_tll[ETH_ADDR_LEN];
2311 uint8_t nd_tll_mask[ETH_ADDR_LEN];
2312 int n = -1;
2313
2314 nd_target_mask_s[0] = 0;
2315 memset(nd_sll_mask, 0xff, sizeof nd_sll_mask);
2316 memset(nd_tll_mask, 0xff, sizeof nd_tll_mask);
2317
2318 if (mask && ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT")%n",
2319 nd_target_s, nd_target_mask_s, &n)) {
2320 put_nd_key(n, nd_target_s, NULL, NULL, key);
2321 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2322 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT")%n",
2323 nd_target_s, &n)) {
2324 put_nd_key(n, nd_target_s, NULL, NULL, key);
2325 if (mask) {
2326 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2327 }
2328 } else if (mask &&
2329 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2330 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2331 nd_target_s, nd_target_mask_s,
2332 ETH_ADDR_SCAN_ARGS(nd_sll),
2333 ETH_ADDR_SCAN_ARGS(nd_sll_mask), &n)) {
2334 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2335 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2336 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2337 "sll="ETH_ADDR_SCAN_FMT")%n",
2338 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n)) {
2339 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2340 if (mask) {
2341 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2342 }
2343 } else if (mask &&
2344 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2345 ",tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2346 nd_target_s, nd_target_mask_s,
2347 ETH_ADDR_SCAN_ARGS(nd_tll),
2348 ETH_ADDR_SCAN_ARGS(nd_tll_mask), &n)) {
2349 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2350 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2351 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2352 "tll="ETH_ADDR_SCAN_FMT")%n",
2353 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n)) {
2354 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2355 if (mask) {
2356 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2357 }
2358 } else if (mask &&
2359 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2360 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2361 "tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2362 nd_target_s, nd_target_mask_s,
2363 ETH_ADDR_SCAN_ARGS(nd_sll),
2364 ETH_ADDR_SCAN_ARGS(nd_sll_mask),
2365 ETH_ADDR_SCAN_ARGS(nd_tll),
2366 ETH_ADDR_SCAN_ARGS(nd_tll_mask),
2367 &n)) {
2368 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2369 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2370 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2371 "sll="ETH_ADDR_SCAN_FMT","
2372 "tll="ETH_ADDR_SCAN_FMT")%n",
2373 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
2374 ETH_ADDR_SCAN_ARGS(nd_tll), &n)) {
2375 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2376 if (mask) {
2377 put_nd_mask(n, nd_target_mask_s,
2378 nd_sll_mask, nd_tll_mask, mask);
2379 }
2380 }
2381
2382 if (n != -1)
2383 return n;
2384
2385 }
2386
2387 if (!strncmp(s, "encap(", 6)) {
2388 const char *start = s;
2389 size_t encap, encap_mask = 0;
2390
2391 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
2392 if (mask) {
2393 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
2394 }
2395
2396 s += 6;
2397 for (;;) {
2398 int retval;
2399
2400 s += strspn(s, ", \t\r\n");
2401 if (!*s) {
2402 return -EINVAL;
2403 } else if (*s == ')') {
2404 break;
2405 }
2406
2407 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2408 if (retval < 0) {
2409 return retval;
2410 }
2411 s += retval;
2412 }
2413 s++;
2414
2415 nl_msg_end_nested(key, encap);
2416 if (mask) {
2417 nl_msg_end_nested(mask, encap_mask);
2418 }
2419
2420 return s - start;
2421 }
2422
2423 return -EINVAL;
2424 }
2425
2426 /* Parses the string representation of a datapath flow key, in the
2427 * format output by odp_flow_key_format(). Returns 0 if successful,
2428 * otherwise a positive errno value. On success, the flow key is
2429 * appended to 'key' as a series of Netlink attributes. On failure, no
2430 * data is appended to 'key'. Either way, 'key''s data might be
2431 * reallocated.
2432 *
2433 * If 'port_names' is nonnull, it points to an simap that maps from a port name
2434 * to a port number. (Port names may be used instead of port numbers in
2435 * in_port.)
2436 *
2437 * On success, the attributes appended to 'key' are individually syntactically
2438 * valid, but they may not be valid as a sequence. 'key' might, for example,
2439 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
2440 int
2441 odp_flow_from_string(const char *s, const struct simap *port_names,
2442 struct ofpbuf *key, struct ofpbuf *mask)
2443 {
2444 const size_t old_size = ofpbuf_size(key);
2445 for (;;) {
2446 int retval;
2447
2448 s += strspn(s, delimiters);
2449 if (!*s) {
2450 return 0;
2451 }
2452
2453 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2454 if (retval < 0) {
2455 ofpbuf_set_size(key, old_size);
2456 return -retval;
2457 }
2458 s += retval;
2459 }
2460
2461 return 0;
2462 }
2463
2464 static uint8_t
2465 ovs_to_odp_frag(uint8_t nw_frag)
2466 {
2467 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
2468 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
2469 : OVS_FRAG_TYPE_LATER);
2470 }
2471
2472 static uint8_t
2473 ovs_to_odp_frag_mask(uint8_t nw_frag_mask)
2474 {
2475 uint8_t frag_mask = ~(OVS_FRAG_TYPE_FIRST | OVS_FRAG_TYPE_LATER);
2476
2477 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_ANY) ? OVS_FRAG_TYPE_FIRST : 0;
2478 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_LATER) ? OVS_FRAG_TYPE_LATER : 0;
2479
2480 return frag_mask;
2481 }
2482
2483 static void
2484 odp_flow_key_from_flow__(struct ofpbuf *buf, const struct flow *flow,
2485 const struct flow *mask, odp_port_t odp_in_port,
2486 size_t max_mpls_depth, bool recirc, bool export_mask)
2487 {
2488 struct ovs_key_ethernet *eth_key;
2489 size_t encap;
2490 const struct flow *data = export_mask ? mask : flow;
2491
2492 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
2493
2494 if (flow->tunnel.ip_dst || export_mask) {
2495 tun_key_to_attr(buf, &data->tunnel);
2496 }
2497
2498 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->pkt_mark);
2499
2500 if (recirc) {
2501 nl_msg_put_u32(buf, OVS_KEY_ATTR_RECIRC_ID, data->recirc_id);
2502 nl_msg_put_u32(buf, OVS_KEY_ATTR_DP_HASH, data->dp_hash);
2503 }
2504
2505 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
2506 * is not the magical value "ODPP_NONE". */
2507 if (export_mask || odp_in_port != ODPP_NONE) {
2508 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
2509 }
2510
2511 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
2512 sizeof *eth_key);
2513 memcpy(eth_key->eth_src, data->dl_src, ETH_ADDR_LEN);
2514 memcpy(eth_key->eth_dst, data->dl_dst, ETH_ADDR_LEN);
2515
2516 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
2517 if (export_mask) {
2518 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2519 } else {
2520 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
2521 }
2522 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
2523 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
2524 if (flow->vlan_tci == htons(0)) {
2525 goto unencap;
2526 }
2527 } else {
2528 encap = 0;
2529 }
2530
2531 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2532 /* For backwards compatibility with kernels that don't support
2533 * wildcarding, the following convention is used to encode the
2534 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
2535 *
2536 * key mask matches
2537 * -------- -------- -------
2538 * >0x5ff 0xffff Specified Ethernet II Ethertype.
2539 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
2540 * <none> 0xffff Any non-Ethernet II frame (except valid
2541 * 802.3 SNAP packet with valid eth_type).
2542 */
2543 if (export_mask) {
2544 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2545 }
2546 goto unencap;
2547 }
2548
2549 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2550
2551 if (flow->dl_type == htons(ETH_TYPE_IP)) {
2552 struct ovs_key_ipv4 *ipv4_key;
2553
2554 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
2555 sizeof *ipv4_key);
2556 ipv4_key->ipv4_src = data->nw_src;
2557 ipv4_key->ipv4_dst = data->nw_dst;
2558 ipv4_key->ipv4_proto = data->nw_proto;
2559 ipv4_key->ipv4_tos = data->nw_tos;
2560 ipv4_key->ipv4_ttl = data->nw_ttl;
2561 ipv4_key->ipv4_frag = export_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2562 : ovs_to_odp_frag(data->nw_frag);
2563 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2564 struct ovs_key_ipv6 *ipv6_key;
2565
2566 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
2567 sizeof *ipv6_key);
2568 memcpy(ipv6_key->ipv6_src, &data->ipv6_src, sizeof ipv6_key->ipv6_src);
2569 memcpy(ipv6_key->ipv6_dst, &data->ipv6_dst, sizeof ipv6_key->ipv6_dst);
2570 ipv6_key->ipv6_label = data->ipv6_label;
2571 ipv6_key->ipv6_proto = data->nw_proto;
2572 ipv6_key->ipv6_tclass = data->nw_tos;
2573 ipv6_key->ipv6_hlimit = data->nw_ttl;
2574 ipv6_key->ipv6_frag = export_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2575 : ovs_to_odp_frag(data->nw_frag);
2576 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2577 flow->dl_type == htons(ETH_TYPE_RARP)) {
2578 struct ovs_key_arp *arp_key;
2579
2580 arp_key = nl_msg_put_unspec_zero(buf, OVS_KEY_ATTR_ARP,
2581 sizeof *arp_key);
2582 arp_key->arp_sip = data->nw_src;
2583 arp_key->arp_tip = data->nw_dst;
2584 arp_key->arp_op = htons(data->nw_proto);
2585 memcpy(arp_key->arp_sha, data->arp_sha, ETH_ADDR_LEN);
2586 memcpy(arp_key->arp_tha, data->arp_tha, ETH_ADDR_LEN);
2587 } else if (eth_type_mpls(flow->dl_type)) {
2588 struct ovs_key_mpls *mpls_key;
2589 int i, n;
2590
2591 n = flow_count_mpls_labels(flow, NULL);
2592 n = MIN(n, max_mpls_depth);
2593 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
2594 n * sizeof *mpls_key);
2595 for (i = 0; i < n; i++) {
2596 mpls_key[i].mpls_lse = data->mpls_lse[i];
2597 }
2598 }
2599
2600 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2601 if (flow->nw_proto == IPPROTO_TCP) {
2602 struct ovs_key_tcp *tcp_key;
2603
2604 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
2605 sizeof *tcp_key);
2606 tcp_key->tcp_src = data->tp_src;
2607 tcp_key->tcp_dst = data->tp_dst;
2608
2609 if (data->tcp_flags) {
2610 nl_msg_put_be16(buf, OVS_KEY_ATTR_TCP_FLAGS, data->tcp_flags);
2611 }
2612 } else if (flow->nw_proto == IPPROTO_UDP) {
2613 struct ovs_key_udp *udp_key;
2614
2615 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
2616 sizeof *udp_key);
2617 udp_key->udp_src = data->tp_src;
2618 udp_key->udp_dst = data->tp_dst;
2619 } else if (flow->nw_proto == IPPROTO_SCTP) {
2620 struct ovs_key_sctp *sctp_key;
2621
2622 sctp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_SCTP,
2623 sizeof *sctp_key);
2624 sctp_key->sctp_src = data->tp_src;
2625 sctp_key->sctp_dst = data->tp_dst;
2626 } else if (flow->dl_type == htons(ETH_TYPE_IP)
2627 && flow->nw_proto == IPPROTO_ICMP) {
2628 struct ovs_key_icmp *icmp_key;
2629
2630 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
2631 sizeof *icmp_key);
2632 icmp_key->icmp_type = ntohs(data->tp_src);
2633 icmp_key->icmp_code = ntohs(data->tp_dst);
2634 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
2635 && flow->nw_proto == IPPROTO_ICMPV6) {
2636 struct ovs_key_icmpv6 *icmpv6_key;
2637
2638 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
2639 sizeof *icmpv6_key);
2640 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
2641 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
2642
2643 if (flow->tp_dst == htons(0)
2644 && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT)
2645 || flow->tp_src == htons(ND_NEIGHBOR_ADVERT))
2646 && (!export_mask || (data->tp_src == htons(0xffff)
2647 && data->tp_dst == htons(0xffff)))) {
2648
2649 struct ovs_key_nd *nd_key;
2650
2651 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
2652 sizeof *nd_key);
2653 memcpy(nd_key->nd_target, &data->nd_target,
2654 sizeof nd_key->nd_target);
2655 memcpy(nd_key->nd_sll, data->arp_sha, ETH_ADDR_LEN);
2656 memcpy(nd_key->nd_tll, data->arp_tha, ETH_ADDR_LEN);
2657 }
2658 }
2659 }
2660
2661 unencap:
2662 if (encap) {
2663 nl_msg_end_nested(buf, encap);
2664 }
2665 }
2666
2667 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
2668 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
2669 * number rather than a datapath port number). Instead, if 'odp_in_port'
2670 * is anything other than ODPP_NONE, it is included in 'buf' as the input
2671 * port.
2672 *
2673 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2674 * capable of being expanded to allow for that much space.
2675 *
2676 * 'recirc' indicates support for recirculation fields. If this is true, then
2677 * these fields will always be serialised. */
2678 void
2679 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
2680 const struct flow *mask, odp_port_t odp_in_port,
2681 bool recirc)
2682 {
2683 odp_flow_key_from_flow__(buf, flow, mask, odp_in_port, SIZE_MAX, recirc,
2684 false);
2685 }
2686
2687 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
2688 * 'buf'. 'flow' is used as a template to determine how to interpret
2689 * 'mask'. For example, the 'dl_type' of 'mask' describes the mask, but
2690 * it doesn't indicate whether the other fields should be interpreted as
2691 * ARP, IPv4, IPv6, etc.
2692 *
2693 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2694 * capable of being expanded to allow for that much space.
2695 *
2696 * 'recirc' indicates support for recirculation fields. If this is true, then
2697 * these fields will always be serialised. */
2698 void
2699 odp_flow_key_from_mask(struct ofpbuf *buf, const struct flow *mask,
2700 const struct flow *flow, uint32_t odp_in_port_mask,
2701 size_t max_mpls_depth, bool recirc)
2702 {
2703 odp_flow_key_from_flow__(buf, flow, mask, u32_to_odp(odp_in_port_mask),
2704 max_mpls_depth, recirc, true);
2705 }
2706
2707 /* Generate ODP flow key from the given packet metadata */
2708 void
2709 odp_key_from_pkt_metadata(struct ofpbuf *buf, const struct pkt_metadata *md)
2710 {
2711 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, md->skb_priority);
2712
2713 if (md->tunnel.ip_dst) {
2714 tun_key_to_attr(buf, &md->tunnel);
2715 }
2716
2717 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, md->pkt_mark);
2718
2719 /* Add an ingress port attribute if 'odp_in_port' is not the magical
2720 * value "ODPP_NONE". */
2721 if (md->in_port.odp_port != ODPP_NONE) {
2722 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, md->in_port.odp_port);
2723 }
2724 }
2725
2726 /* Generate packet metadata from the given ODP flow key. */
2727 void
2728 odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len,
2729 struct pkt_metadata *md)
2730 {
2731 const struct nlattr *nla;
2732 size_t left;
2733 uint32_t wanted_attrs = 1u << OVS_KEY_ATTR_PRIORITY |
2734 1u << OVS_KEY_ATTR_SKB_MARK | 1u << OVS_KEY_ATTR_TUNNEL |
2735 1u << OVS_KEY_ATTR_IN_PORT;
2736
2737 *md = PKT_METADATA_INITIALIZER(ODPP_NONE);
2738
2739 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2740 uint16_t type = nl_attr_type(nla);
2741 size_t len = nl_attr_get_size(nla);
2742 int expected_len = odp_flow_key_attr_len(type);
2743
2744 if (len != expected_len && expected_len >= 0) {
2745 continue;
2746 }
2747
2748 switch (type) {
2749 case OVS_KEY_ATTR_RECIRC_ID:
2750 md->recirc_id = nl_attr_get_u32(nla);
2751 wanted_attrs &= ~(1u << OVS_KEY_ATTR_RECIRC_ID);
2752 break;
2753 case OVS_KEY_ATTR_DP_HASH:
2754 md->dp_hash = nl_attr_get_u32(nla);
2755 wanted_attrs &= ~(1u << OVS_KEY_ATTR_DP_HASH);
2756 break;
2757 case OVS_KEY_ATTR_PRIORITY:
2758 md->skb_priority = nl_attr_get_u32(nla);
2759 wanted_attrs &= ~(1u << OVS_KEY_ATTR_PRIORITY);
2760 break;
2761 case OVS_KEY_ATTR_SKB_MARK:
2762 md->pkt_mark = nl_attr_get_u32(nla);
2763 wanted_attrs &= ~(1u << OVS_KEY_ATTR_SKB_MARK);
2764 break;
2765 case OVS_KEY_ATTR_TUNNEL: {
2766 enum odp_key_fitness res;
2767
2768 res = odp_tun_key_from_attr(nla, &md->tunnel);
2769 if (res == ODP_FIT_ERROR) {
2770 memset(&md->tunnel, 0, sizeof md->tunnel);
2771 } else if (res == ODP_FIT_PERFECT) {
2772 wanted_attrs &= ~(1u << OVS_KEY_ATTR_TUNNEL);
2773 }
2774 break;
2775 }
2776 case OVS_KEY_ATTR_IN_PORT:
2777 md->in_port.odp_port = nl_attr_get_odp_port(nla);
2778 wanted_attrs &= ~(1u << OVS_KEY_ATTR_IN_PORT);
2779 break;
2780 default:
2781 break;
2782 }
2783
2784 if (!wanted_attrs) {
2785 return; /* Have everything. */
2786 }
2787 }
2788 }
2789
2790 uint32_t
2791 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
2792 {
2793 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
2794 return hash_words(ALIGNED_CAST(const uint32_t *, key),
2795 key_len / sizeof(uint32_t), 0);
2796 }
2797
2798 static void
2799 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
2800 uint64_t attrs, int out_of_range_attr,
2801 const struct nlattr *key, size_t key_len)
2802 {
2803 struct ds s;
2804 int i;
2805
2806 if (VLOG_DROP_DBG(rl)) {
2807 return;
2808 }
2809
2810 ds_init(&s);
2811 for (i = 0; i < 64; i++) {
2812 if (attrs & (UINT64_C(1) << i)) {
2813 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2814
2815 ds_put_format(&s, " %s",
2816 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
2817 }
2818 }
2819 if (out_of_range_attr) {
2820 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
2821 }
2822
2823 ds_put_cstr(&s, ": ");
2824 odp_flow_key_format(key, key_len, &s);
2825
2826 VLOG_DBG("%s:%s", title, ds_cstr(&s));
2827 ds_destroy(&s);
2828 }
2829
2830 static bool
2831 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
2832 {
2833 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2834
2835 if (odp_frag > OVS_FRAG_TYPE_LATER) {
2836 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
2837 return false;
2838 }
2839
2840 if (odp_frag != OVS_FRAG_TYPE_NONE) {
2841 flow->nw_frag |= FLOW_NW_FRAG_ANY;
2842 if (odp_frag == OVS_FRAG_TYPE_LATER) {
2843 flow->nw_frag |= FLOW_NW_FRAG_LATER;
2844 }
2845 }
2846 return true;
2847 }
2848
2849 static bool
2850 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
2851 const struct nlattr *attrs[], uint64_t *present_attrsp,
2852 int *out_of_range_attrp)
2853 {
2854 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2855 const struct nlattr *nla;
2856 uint64_t present_attrs;
2857 size_t left;
2858
2859 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
2860 present_attrs = 0;
2861 *out_of_range_attrp = 0;
2862 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2863 uint16_t type = nl_attr_type(nla);
2864 size_t len = nl_attr_get_size(nla);
2865 int expected_len = odp_flow_key_attr_len(type);
2866
2867 if (len != expected_len && expected_len >= 0) {
2868 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2869
2870 VLOG_ERR_RL(&rl, "attribute %s has length %"PRIuSIZE" but should have "
2871 "length %d", ovs_key_attr_to_string(type, namebuf,
2872 sizeof namebuf),
2873 len, expected_len);
2874 return false;
2875 }
2876
2877 if (type > OVS_KEY_ATTR_MAX) {
2878 *out_of_range_attrp = type;
2879 } else {
2880 if (present_attrs & (UINT64_C(1) << type)) {
2881 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2882
2883 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
2884 ovs_key_attr_to_string(type,
2885 namebuf, sizeof namebuf));
2886 return false;
2887 }
2888
2889 present_attrs |= UINT64_C(1) << type;
2890 attrs[type] = nla;
2891 }
2892 }
2893 if (left) {
2894 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
2895 return false;
2896 }
2897
2898 *present_attrsp = present_attrs;
2899 return true;
2900 }
2901
2902 static enum odp_key_fitness
2903 check_expectations(uint64_t present_attrs, int out_of_range_attr,
2904 uint64_t expected_attrs,
2905 const struct nlattr *key, size_t key_len)
2906 {
2907 uint64_t missing_attrs;
2908 uint64_t extra_attrs;
2909
2910 missing_attrs = expected_attrs & ~present_attrs;
2911 if (missing_attrs) {
2912 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2913 log_odp_key_attributes(&rl, "expected but not present",
2914 missing_attrs, 0, key, key_len);
2915 return ODP_FIT_TOO_LITTLE;
2916 }
2917
2918 extra_attrs = present_attrs & ~expected_attrs;
2919 if (extra_attrs || out_of_range_attr) {
2920 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2921 log_odp_key_attributes(&rl, "present but not expected",
2922 extra_attrs, out_of_range_attr, key, key_len);
2923 return ODP_FIT_TOO_MUCH;
2924 }
2925
2926 return ODP_FIT_PERFECT;
2927 }
2928
2929 static bool
2930 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2931 uint64_t present_attrs, uint64_t *expected_attrs,
2932 struct flow *flow, const struct flow *src_flow)
2933 {
2934 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2935 bool is_mask = flow != src_flow;
2936
2937 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
2938 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
2939 if (!is_mask && ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2940 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
2941 ntohs(flow->dl_type));
2942 return false;
2943 }
2944 if (is_mask && ntohs(src_flow->dl_type) < ETH_TYPE_MIN &&
2945 flow->dl_type != htons(0xffff)) {
2946 return false;
2947 }
2948 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
2949 } else {
2950 if (!is_mask) {
2951 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
2952 } else if (ntohs(src_flow->dl_type) < ETH_TYPE_MIN) {
2953 /* See comments in odp_flow_key_from_flow__(). */
2954 VLOG_ERR_RL(&rl, "mask expected for non-Ethernet II frame");
2955 return false;
2956 }
2957 }
2958 return true;
2959 }
2960
2961 static enum odp_key_fitness
2962 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2963 uint64_t present_attrs, int out_of_range_attr,
2964 uint64_t expected_attrs, struct flow *flow,
2965 const struct nlattr *key, size_t key_len,
2966 const struct flow *src_flow)
2967 {
2968 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2969 bool is_mask = src_flow != flow;
2970 const void *check_start = NULL;
2971 size_t check_len = 0;
2972 enum ovs_key_attr expected_bit = 0xff;
2973
2974 if (eth_type_mpls(src_flow->dl_type)) {
2975 size_t size = nl_attr_get_size(attrs[OVS_KEY_ATTR_MPLS]);
2976 const ovs_be32 *mpls_lse = nl_attr_get(attrs[OVS_KEY_ATTR_MPLS]);
2977 int n = size / sizeof(ovs_be32);
2978 int i;
2979
2980 if (!size || size % sizeof(ovs_be32)) {
2981 return ODP_FIT_ERROR;
2982 }
2983
2984 if (!is_mask) {
2985 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2986
2987 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS))) {
2988 return ODP_FIT_TOO_LITTLE;
2989 }
2990 } else if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
2991 if (flow->mpls_lse[0] && flow->dl_type != htons(0xffff)) {
2992 return ODP_FIT_ERROR;
2993 }
2994 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2995 }
2996
2997 for (i = 0; i < n && i < FLOW_MAX_MPLS_LABELS; i++) {
2998 flow->mpls_lse[i] = mpls_lse[i];
2999 }
3000 if (n > FLOW_MAX_MPLS_LABELS) {
3001 return ODP_FIT_TOO_MUCH;
3002 }
3003
3004 if (!is_mask) {
3005 /* BOS may be set only in the innermost label. */
3006 for (i = 0; i < n - 1; i++) {
3007 if (flow->mpls_lse[i] & htonl(MPLS_BOS_MASK)) {
3008 return ODP_FIT_ERROR;
3009 }
3010 }
3011
3012 /* BOS must be set in the innermost label. */
3013 if (n < FLOW_MAX_MPLS_LABELS
3014 && !(flow->mpls_lse[n - 1] & htonl(MPLS_BOS_MASK))) {
3015 return ODP_FIT_TOO_LITTLE;
3016 }
3017 }
3018
3019 goto done;
3020 } else if (src_flow->dl_type == htons(ETH_TYPE_IP)) {
3021 if (!is_mask) {
3022 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
3023 }
3024 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
3025 const struct ovs_key_ipv4 *ipv4_key;
3026
3027 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
3028 flow->nw_src = ipv4_key->ipv4_src;
3029 flow->nw_dst = ipv4_key->ipv4_dst;
3030 flow->nw_proto = ipv4_key->ipv4_proto;
3031 flow->nw_tos = ipv4_key->ipv4_tos;
3032 flow->nw_ttl = ipv4_key->ipv4_ttl;
3033 if (is_mask) {
3034 flow->nw_frag = ipv4_key->ipv4_frag;
3035 check_start = ipv4_key;
3036 check_len = sizeof *ipv4_key;
3037 expected_bit = OVS_KEY_ATTR_IPV4;
3038 } else if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
3039 return ODP_FIT_ERROR;
3040 }
3041 }
3042 } else if (src_flow->dl_type == htons(ETH_TYPE_IPV6)) {
3043 if (!is_mask) {
3044 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
3045 }
3046 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
3047 const struct ovs_key_ipv6 *ipv6_key;
3048
3049 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
3050 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
3051 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
3052 flow->ipv6_label = ipv6_key->ipv6_label;
3053 flow->nw_proto = ipv6_key->ipv6_proto;
3054 flow->nw_tos = ipv6_key->ipv6_tclass;
3055 flow->nw_ttl = ipv6_key->ipv6_hlimit;
3056 if (is_mask) {
3057 flow->nw_frag = ipv6_key->ipv6_frag;
3058 check_start = ipv6_key;
3059 check_len = sizeof *ipv6_key;
3060 expected_bit = OVS_KEY_ATTR_IPV6;
3061 } else if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
3062 return ODP_FIT_ERROR;
3063 }
3064 }
3065 } else if (src_flow->dl_type == htons(ETH_TYPE_ARP) ||
3066 src_flow->dl_type == htons(ETH_TYPE_RARP)) {
3067 if (!is_mask) {
3068 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
3069 }
3070 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
3071 const struct ovs_key_arp *arp_key;
3072
3073 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
3074 flow->nw_src = arp_key->arp_sip;
3075 flow->nw_dst = arp_key->arp_tip;
3076 if (!is_mask && (arp_key->arp_op & htons(0xff00))) {
3077 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
3078 "key", ntohs(arp_key->arp_op));
3079 return ODP_FIT_ERROR;
3080 }
3081 flow->nw_proto = ntohs(arp_key->arp_op);
3082 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
3083 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
3084
3085 if (is_mask) {
3086 check_start = arp_key;
3087 check_len = sizeof *arp_key;
3088 expected_bit = OVS_KEY_ATTR_ARP;
3089 }
3090 }
3091 } else {
3092 goto done;
3093 }
3094 if (check_len > 0) { /* Happens only when 'is_mask'. */
3095 if (!is_all_zeros(check_start, check_len) &&
3096 flow->dl_type != htons(0xffff)) {
3097 return ODP_FIT_ERROR;
3098 } else {
3099 expected_attrs |= UINT64_C(1) << expected_bit;
3100 }
3101 }
3102
3103 expected_bit = OVS_KEY_ATTR_UNSPEC;
3104 if (src_flow->nw_proto == IPPROTO_TCP
3105 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
3106 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3107 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3108 if (!is_mask) {
3109 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
3110 }
3111 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
3112 const struct ovs_key_tcp *tcp_key;
3113
3114 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
3115 flow->tp_src = tcp_key->tcp_src;
3116 flow->tp_dst = tcp_key->tcp_dst;
3117 expected_bit = OVS_KEY_ATTR_TCP;
3118 }
3119 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS)) {
3120 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS;
3121 flow->tcp_flags = nl_attr_get_be16(attrs[OVS_KEY_ATTR_TCP_FLAGS]);
3122 }
3123 } else if (src_flow->nw_proto == IPPROTO_UDP
3124 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
3125 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3126 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3127 if (!is_mask) {
3128 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
3129 }
3130 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
3131 const struct ovs_key_udp *udp_key;
3132
3133 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
3134 flow->tp_src = udp_key->udp_src;
3135 flow->tp_dst = udp_key->udp_dst;
3136 expected_bit = OVS_KEY_ATTR_UDP;
3137 }
3138 } else if (src_flow->nw_proto == IPPROTO_SCTP
3139 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
3140 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3141 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3142 if (!is_mask) {
3143 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SCTP;
3144 }
3145 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SCTP)) {
3146 const struct ovs_key_sctp *sctp_key;
3147
3148 sctp_key = nl_attr_get(attrs[OVS_KEY_ATTR_SCTP]);
3149 flow->tp_src = sctp_key->sctp_src;
3150 flow->tp_dst = sctp_key->sctp_dst;
3151 expected_bit = OVS_KEY_ATTR_SCTP;
3152 }
3153 } else if (src_flow->nw_proto == IPPROTO_ICMP
3154 && src_flow->dl_type == htons(ETH_TYPE_IP)
3155 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3156 if (!is_mask) {
3157 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
3158 }
3159 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
3160 const struct ovs_key_icmp *icmp_key;
3161
3162 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
3163 flow->tp_src = htons(icmp_key->icmp_type);
3164 flow->tp_dst = htons(icmp_key->icmp_code);
3165 expected_bit = OVS_KEY_ATTR_ICMP;
3166 }
3167 } else if (src_flow->nw_proto == IPPROTO_ICMPV6
3168 && src_flow->dl_type == htons(ETH_TYPE_IPV6)
3169 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3170 if (!is_mask) {
3171 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
3172 }
3173 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
3174 const struct ovs_key_icmpv6 *icmpv6_key;
3175
3176 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
3177 flow->tp_src = htons(icmpv6_key->icmpv6_type);
3178 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
3179 expected_bit = OVS_KEY_ATTR_ICMPV6;
3180 if (src_flow->tp_dst == htons(0) &&
3181 (src_flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
3182 src_flow->tp_src == htons(ND_NEIGHBOR_ADVERT))) {
3183 if (!is_mask) {
3184 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3185 }
3186 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
3187 const struct ovs_key_nd *nd_key;
3188
3189 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
3190 memcpy(&flow->nd_target, nd_key->nd_target,
3191 sizeof flow->nd_target);
3192 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
3193 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
3194 if (is_mask) {
3195 if (!is_all_zeros((const uint8_t *) nd_key,
3196 sizeof *nd_key) &&
3197 (flow->tp_src != htons(0xffff) ||
3198 flow->tp_dst != htons(0xffff))) {
3199 return ODP_FIT_ERROR;
3200 } else {
3201 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3202 }
3203 }
3204 }
3205 }
3206 }
3207 }
3208 if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
3209 if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
3210 return ODP_FIT_ERROR;
3211 } else {
3212 expected_attrs |= UINT64_C(1) << expected_bit;
3213 }
3214 }
3215
3216 done:
3217 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
3218 key, key_len);
3219 }
3220
3221 /* Parse 802.1Q header then encapsulated L3 attributes. */
3222 static enum odp_key_fitness
3223 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
3224 uint64_t present_attrs, int out_of_range_attr,
3225 uint64_t expected_attrs, struct flow *flow,
3226 const struct nlattr *key, size_t key_len,
3227 const struct flow *src_flow)
3228 {
3229 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
3230 bool is_mask = src_flow != flow;
3231
3232 const struct nlattr *encap
3233 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
3234 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
3235 enum odp_key_fitness encap_fitness;
3236 enum odp_key_fitness fitness;
3237
3238 /* Calculate fitness of outer attributes. */
3239 if (!is_mask) {
3240 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
3241 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
3242 } else {
3243 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3244 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3245 }
3246 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)) {
3247 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_ENCAP);
3248 }
3249 }
3250 fitness = check_expectations(present_attrs, out_of_range_attr,
3251 expected_attrs, key, key_len);
3252
3253 /* Set vlan_tci.
3254 * Remove the TPID from dl_type since it's not the real Ethertype. */
3255 flow->dl_type = htons(0);
3256 flow->vlan_tci = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)
3257 ? nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN])
3258 : htons(0));
3259 if (!is_mask) {
3260 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
3261 return ODP_FIT_TOO_LITTLE;
3262 } else if (flow->vlan_tci == htons(0)) {
3263 /* Corner case for a truncated 802.1Q header. */
3264 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
3265 return ODP_FIT_TOO_MUCH;
3266 }
3267 return fitness;
3268 } else if (!(flow->vlan_tci & htons(VLAN_CFI))) {
3269 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
3270 "but CFI bit is not set", ntohs(flow->vlan_tci));
3271 return ODP_FIT_ERROR;
3272 }
3273 } else {
3274 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))) {
3275 return fitness;
3276 }
3277 }
3278
3279 /* Now parse the encapsulated attributes. */
3280 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
3281 attrs, &present_attrs, &out_of_range_attr)) {
3282 return ODP_FIT_ERROR;
3283 }
3284 expected_attrs = 0;
3285
3286 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow, src_flow)) {
3287 return ODP_FIT_ERROR;
3288 }
3289 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3290 expected_attrs, flow, key, key_len,
3291 src_flow);
3292
3293 /* The overall fitness is the worse of the outer and inner attributes. */
3294 return MAX(fitness, encap_fitness);
3295 }
3296
3297 static enum odp_key_fitness
3298 odp_flow_key_to_flow__(const struct nlattr *key, size_t key_len,
3299 struct flow *flow, const struct flow *src_flow)
3300 {
3301 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
3302 uint64_t expected_attrs;
3303 uint64_t present_attrs;
3304 int out_of_range_attr;
3305 bool is_mask = src_flow != flow;
3306
3307 memset(flow, 0, sizeof *flow);
3308
3309 /* Parse attributes. */
3310 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
3311 &out_of_range_attr)) {
3312 return ODP_FIT_ERROR;
3313 }
3314 expected_attrs = 0;
3315
3316 /* Metadata. */
3317 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID)) {
3318 flow->recirc_id = nl_attr_get_u32(attrs[OVS_KEY_ATTR_RECIRC_ID]);
3319 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID;
3320 } else if (is_mask) {
3321 /* Always exact match recirc_id if it is not specified. */
3322 flow->recirc_id = UINT32_MAX;
3323 }
3324
3325 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_DP_HASH)) {
3326 flow->dp_hash = nl_attr_get_u32(attrs[OVS_KEY_ATTR_DP_HASH]);
3327 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_DP_HASH;
3328 }
3329 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
3330 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
3331 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
3332 }
3333
3334 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
3335 flow->pkt_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
3336 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
3337 }
3338
3339 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
3340 enum odp_key_fitness res;
3341
3342 res = odp_tun_key_from_attr(attrs[OVS_KEY_ATTR_TUNNEL], &flow->tunnel);
3343 if (res == ODP_FIT_ERROR) {
3344 return ODP_FIT_ERROR;
3345 } else if (res == ODP_FIT_PERFECT) {
3346 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
3347 }
3348 }
3349
3350 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
3351 flow->in_port.odp_port
3352 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
3353 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
3354 } else if (!is_mask) {
3355 flow->in_port.odp_port = ODPP_NONE;
3356 }
3357
3358 /* Ethernet header. */
3359 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
3360 const struct ovs_key_ethernet *eth_key;
3361
3362 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
3363 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
3364 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
3365 if (is_mask) {
3366 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3367 }
3368 }
3369 if (!is_mask) {
3370 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3371 }
3372
3373 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
3374 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow,
3375 src_flow)) {
3376 return ODP_FIT_ERROR;
3377 }
3378
3379 if (is_mask
3380 ? (src_flow->vlan_tci & htons(VLAN_CFI)) != 0
3381 : src_flow->dl_type == htons(ETH_TYPE_VLAN)) {
3382 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
3383 expected_attrs, flow, key, key_len, src_flow);
3384 }
3385 if (is_mask) {
3386 flow->vlan_tci = htons(0xffff);
3387 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3388 flow->vlan_tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
3389 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3390 }
3391 }
3392 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3393 expected_attrs, flow, key, key_len, src_flow);
3394 }
3395
3396 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
3397 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
3398 * 'key' fits our expectations for what a flow key should contain.
3399 *
3400 * The 'in_port' will be the datapath's understanding of the port. The
3401 * caller will need to translate with odp_port_to_ofp_port() if the
3402 * OpenFlow port is needed.
3403 *
3404 * This function doesn't take the packet itself as an argument because none of
3405 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
3406 * it is always possible to infer which additional attribute(s) should appear
3407 * by looking at the attributes for lower-level protocols, e.g. if the network
3408 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
3409 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
3410 * must be absent. */
3411 enum odp_key_fitness
3412 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
3413 struct flow *flow)
3414 {
3415 return odp_flow_key_to_flow__(key, key_len, flow, flow);
3416 }
3417
3418 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a mask
3419 * structure in 'mask'. 'flow' must be a previously translated flow
3420 * corresponding to 'mask'. Returns an ODP_FIT_* value that indicates how well
3421 * 'key' fits our expectations for what a flow key should contain. */
3422 enum odp_key_fitness
3423 odp_flow_key_to_mask(const struct nlattr *key, size_t key_len,
3424 struct flow *mask, const struct flow *flow)
3425 {
3426 return odp_flow_key_to_flow__(key, key_len, mask, flow);
3427 }
3428
3429 /* Returns 'fitness' as a string, for use in debug messages. */
3430 const char *
3431 odp_key_fitness_to_string(enum odp_key_fitness fitness)
3432 {
3433 switch (fitness) {
3434 case ODP_FIT_PERFECT:
3435 return "OK";
3436 case ODP_FIT_TOO_MUCH:
3437 return "too_much";
3438 case ODP_FIT_TOO_LITTLE:
3439 return "too_little";
3440 case ODP_FIT_ERROR:
3441 return "error";
3442 default:
3443 return "<unknown>";
3444 }
3445 }
3446
3447 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
3448 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
3449 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
3450 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
3451 * null, then the return value is not meaningful.) */
3452 size_t
3453 odp_put_userspace_action(uint32_t pid,
3454 const void *userdata, size_t userdata_size,
3455 struct ofpbuf *odp_actions)
3456 {
3457 size_t userdata_ofs;
3458 size_t offset;
3459
3460 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
3461 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
3462 if (userdata) {
3463 userdata_ofs = ofpbuf_size(odp_actions) + NLA_HDRLEN;
3464
3465 /* The OVS kernel module before OVS 1.11 and the upstream Linux kernel
3466 * module before Linux 3.10 required the userdata to be exactly 8 bytes
3467 * long:
3468 *
3469 * - The kernel rejected shorter userdata with -ERANGE.
3470 *
3471 * - The kernel silently dropped userdata beyond the first 8 bytes.
3472 *
3473 * Thus, for maximum compatibility, always put at least 8 bytes. (We
3474 * separately disable features that required more than 8 bytes.) */
3475 memcpy(nl_msg_put_unspec_zero(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
3476 MAX(8, userdata_size)),
3477 userdata, userdata_size);
3478 } else {
3479 userdata_ofs = 0;
3480 }
3481 nl_msg_end_nested(odp_actions, offset);
3482
3483 return userdata_ofs;
3484 }
3485
3486 void
3487 odp_put_tunnel_action(const struct flow_tnl *tunnel,
3488 struct ofpbuf *odp_actions)
3489 {
3490 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3491 tun_key_to_attr(odp_actions, tunnel);
3492 nl_msg_end_nested(odp_actions, offset);
3493 }
3494 \f
3495 /* The commit_odp_actions() function and its helpers. */
3496
3497 static void
3498 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
3499 const void *key, size_t key_size)
3500 {
3501 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3502 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
3503 nl_msg_end_nested(odp_actions, offset);
3504 }
3505
3506 void
3507 odp_put_pkt_mark_action(const uint32_t pkt_mark,
3508 struct ofpbuf *odp_actions)
3509 {
3510 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK, &pkt_mark,
3511 sizeof(pkt_mark));
3512 }
3513
3514 /* If any of the flow key data that ODP actions can modify are different in
3515 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
3516 * 'odp_actions' that change the flow tunneling information in key from
3517 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
3518 * same way. In other words, operates the same as commit_odp_actions(), but
3519 * only on tunneling information. */
3520 void
3521 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
3522 struct ofpbuf *odp_actions)
3523 {
3524 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
3525 if (flow->tunnel.ip_dst) {
3526 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
3527 return;
3528 }
3529 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
3530 odp_put_tunnel_action(&base->tunnel, odp_actions);
3531 }
3532 }
3533
3534 static void
3535 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
3536 struct ofpbuf *odp_actions,
3537 struct flow_wildcards *wc)
3538 {
3539 struct ovs_key_ethernet eth_key;
3540
3541 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
3542 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
3543 return;
3544 }
3545
3546 memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
3547 memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
3548
3549 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
3550 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
3551
3552 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
3553 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
3554
3555 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
3556 &eth_key, sizeof(eth_key));
3557 }
3558
3559 static void
3560 pop_vlan(struct flow *base,
3561 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3562 {
3563 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
3564
3565 if (base->vlan_tci & htons(VLAN_CFI)) {
3566 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3567 base->vlan_tci = 0;
3568 }
3569 }
3570
3571 static void
3572 commit_vlan_action(ovs_be16 vlan_tci, struct flow *base,
3573 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3574 {
3575 if (base->vlan_tci == vlan_tci) {
3576 return;
3577 }
3578
3579 pop_vlan(base, odp_actions, wc);
3580 if (vlan_tci & htons(VLAN_CFI)) {
3581 struct ovs_action_push_vlan vlan;
3582
3583 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
3584 vlan.vlan_tci = vlan_tci;
3585 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3586 &vlan, sizeof vlan);
3587 }
3588 base->vlan_tci = vlan_tci;
3589 }
3590
3591 static void
3592 commit_mpls_action(const struct flow *flow, struct flow *base,
3593 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3594 {
3595 int base_n = flow_count_mpls_labels(base, wc);
3596 int flow_n = flow_count_mpls_labels(flow, wc);
3597 int common_n = flow_count_common_mpls_labels(flow, flow_n, base, base_n,
3598 wc);
3599
3600 while (base_n > common_n) {
3601 if (base_n - 1 == common_n && flow_n > common_n) {
3602 /* If there is only one more LSE in base than there are common
3603 * between base and flow; and flow has at least one more LSE than
3604 * is common then the topmost LSE of base may be updated using
3605 * set */
3606 struct ovs_key_mpls mpls_key;
3607
3608 mpls_key.mpls_lse = flow->mpls_lse[flow_n - base_n];
3609 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
3610 &mpls_key, sizeof mpls_key);
3611 flow_set_mpls_lse(base, 0, mpls_key.mpls_lse);
3612 common_n++;
3613 } else {
3614 /* Otherwise, if there more LSEs in base than are common between
3615 * base and flow then pop the topmost one. */
3616 ovs_be16 dl_type;
3617 bool popped;
3618
3619 /* If all the LSEs are to be popped and this is not the outermost
3620 * LSE then use ETH_TYPE_MPLS as the ethertype parameter of the
3621 * POP_MPLS action instead of flow->dl_type.
3622 *
3623 * This is because the POP_MPLS action requires its ethertype
3624 * argument to be an MPLS ethernet type but in this case
3625 * flow->dl_type will be a non-MPLS ethernet type.
3626 *
3627 * When the final POP_MPLS action occurs it use flow->dl_type and
3628 * the and the resulting packet will have the desired dl_type. */
3629 if ((!eth_type_mpls(flow->dl_type)) && base_n > 1) {
3630 dl_type = htons(ETH_TYPE_MPLS);
3631 } else {
3632 dl_type = flow->dl_type;
3633 }
3634 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, dl_type);
3635 popped = flow_pop_mpls(base, base_n, flow->dl_type, wc);
3636 ovs_assert(popped);
3637 base_n--;
3638 }
3639 }
3640
3641 /* If, after the above popping and setting, there are more LSEs in flow
3642 * than base then some LSEs need to be pushed. */
3643 while (base_n < flow_n) {
3644 struct ovs_action_push_mpls *mpls;
3645
3646 mpls = nl_msg_put_unspec_zero(odp_actions,
3647 OVS_ACTION_ATTR_PUSH_MPLS,
3648 sizeof *mpls);
3649 mpls->mpls_ethertype = flow->dl_type;
3650 mpls->mpls_lse = flow->mpls_lse[flow_n - base_n - 1];
3651 flow_push_mpls(base, base_n, mpls->mpls_ethertype, wc);
3652 flow_set_mpls_lse(base, 0, mpls->mpls_lse);
3653 base_n++;
3654 }
3655 }
3656
3657 static void
3658 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
3659 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3660 {
3661 struct ovs_key_ipv4 ipv4_key;
3662
3663 if (base->nw_src == flow->nw_src &&
3664 base->nw_dst == flow->nw_dst &&
3665 base->nw_tos == flow->nw_tos &&
3666 base->nw_ttl == flow->nw_ttl &&
3667 base->nw_frag == flow->nw_frag) {
3668 return;
3669 }
3670
3671 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3672 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3673 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3674 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3675 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3676 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3677
3678 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
3679 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
3680 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
3681 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
3682 ipv4_key.ipv4_proto = base->nw_proto;
3683 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
3684
3685 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
3686 &ipv4_key, sizeof(ipv4_key));
3687 }
3688
3689 static void
3690 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
3691 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3692 {
3693 struct ovs_key_ipv6 ipv6_key;
3694
3695 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
3696 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
3697 base->ipv6_label == flow->ipv6_label &&
3698 base->nw_tos == flow->nw_tos &&
3699 base->nw_ttl == flow->nw_ttl &&
3700 base->nw_frag == flow->nw_frag) {
3701 return;
3702 }
3703
3704 memset(&wc->masks.ipv6_src, 0xff, sizeof wc->masks.ipv6_src);
3705 memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst);
3706 memset(&wc->masks.ipv6_label, 0xff, sizeof wc->masks.ipv6_label);
3707 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3708 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3709 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3710 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3711
3712 base->ipv6_src = flow->ipv6_src;
3713 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
3714 base->ipv6_dst = flow->ipv6_dst;
3715 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
3716
3717 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
3718 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
3719 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
3720 ipv6_key.ipv6_proto = base->nw_proto;
3721 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
3722
3723 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
3724 &ipv6_key, sizeof(ipv6_key));
3725 }
3726
3727 static enum slow_path_reason
3728 commit_set_arp_action(const struct flow *flow, struct flow *base,
3729 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3730 {
3731 struct ovs_key_arp arp_key;
3732
3733 if (base->nw_src == flow->nw_src &&
3734 base->nw_dst == flow->nw_dst &&
3735 base->nw_proto == flow->nw_proto &&
3736 eth_addr_equals(base->arp_sha, flow->arp_sha) &&
3737 eth_addr_equals(base->arp_tha, flow->arp_tha)) {
3738 return 0;
3739 }
3740
3741 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3742 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3743 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3744 memset(&wc->masks.arp_sha, 0xff, sizeof wc->masks.arp_sha);
3745 memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
3746
3747 base->nw_src = flow->nw_src;
3748 base->nw_dst = flow->nw_dst;
3749 base->nw_proto = flow->nw_proto;
3750 memcpy(base->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3751 memcpy(base->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3752
3753 arp_key.arp_sip = base->nw_src;
3754 arp_key.arp_tip = base->nw_dst;
3755 arp_key.arp_op = htons(base->nw_proto);
3756 memcpy(arp_key.arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3757 memcpy(arp_key.arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3758
3759 commit_set_action(odp_actions, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
3760
3761 return SLOW_ACTION;
3762 }
3763
3764 static enum slow_path_reason
3765 commit_set_nw_action(const struct flow *flow, struct flow *base,
3766 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3767 {
3768 /* Check if 'flow' really has an L3 header. */
3769 if (!flow->nw_proto) {
3770 return 0;
3771 }
3772
3773 switch (ntohs(base->dl_type)) {
3774 case ETH_TYPE_IP:
3775 commit_set_ipv4_action(flow, base, odp_actions, wc);
3776 break;
3777
3778 case ETH_TYPE_IPV6:
3779 commit_set_ipv6_action(flow, base, odp_actions, wc);
3780 break;
3781
3782 case ETH_TYPE_ARP:
3783 return commit_set_arp_action(flow, base, odp_actions, wc);
3784 }
3785
3786 return 0;
3787 }
3788
3789 static void
3790 commit_set_port_action(const struct flow *flow, struct flow *base,
3791 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3792 {
3793 if (!is_ip_any(base) || (!base->tp_src && !base->tp_dst)) {
3794 return;
3795 }
3796
3797 if (base->tp_src == flow->tp_src &&
3798 base->tp_dst == flow->tp_dst) {
3799 return;
3800 }
3801
3802 memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
3803 memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
3804
3805 if (flow->nw_proto == IPPROTO_TCP) {
3806 struct ovs_key_tcp port_key;
3807
3808 port_key.tcp_src = base->tp_src = flow->tp_src;
3809 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
3810
3811 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
3812 &port_key, sizeof(port_key));
3813
3814 } else if (flow->nw_proto == IPPROTO_UDP) {
3815 struct ovs_key_udp port_key;
3816
3817 port_key.udp_src = base->tp_src = flow->tp_src;
3818 port_key.udp_dst = base->tp_dst = flow->tp_dst;
3819
3820 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
3821 &port_key, sizeof(port_key));
3822 } else if (flow->nw_proto == IPPROTO_SCTP) {
3823 struct ovs_key_sctp port_key;
3824
3825 port_key.sctp_src = base->tp_src = flow->tp_src;
3826 port_key.sctp_dst = base->tp_dst = flow->tp_dst;
3827
3828 commit_set_action(odp_actions, OVS_KEY_ATTR_SCTP,
3829 &port_key, sizeof(port_key));
3830 }
3831 }
3832
3833 static void
3834 commit_set_priority_action(const struct flow *flow, struct flow *base,
3835 struct ofpbuf *odp_actions,
3836 struct flow_wildcards *wc)
3837 {
3838 if (base->skb_priority == flow->skb_priority) {
3839 return;
3840 }
3841
3842 memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
3843 base->skb_priority = flow->skb_priority;
3844
3845 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
3846 &base->skb_priority, sizeof(base->skb_priority));
3847 }
3848
3849 static void
3850 commit_set_pkt_mark_action(const struct flow *flow, struct flow *base,
3851 struct ofpbuf *odp_actions,
3852 struct flow_wildcards *wc)
3853 {
3854 if (base->pkt_mark == flow->pkt_mark) {
3855 return;
3856 }
3857
3858 memset(&wc->masks.pkt_mark, 0xff, sizeof wc->masks.pkt_mark);
3859 base->pkt_mark = flow->pkt_mark;
3860
3861 odp_put_pkt_mark_action(base->pkt_mark, odp_actions);
3862 }
3863
3864 /* If any of the flow key data that ODP actions can modify are different in
3865 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
3866 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
3867 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
3868 * in addition to this function if needed. Sets fields in 'wc' that are
3869 * used as part of the action.
3870 *
3871 * Returns a reason to force processing the flow's packets into the userspace
3872 * slow path, if there is one, otherwise 0. */
3873 enum slow_path_reason
3874 commit_odp_actions(const struct flow *flow, struct flow *base,
3875 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3876 {
3877 enum slow_path_reason slow;
3878
3879 commit_set_ether_addr_action(flow, base, odp_actions, wc);
3880 slow = commit_set_nw_action(flow, base, odp_actions, wc);
3881 commit_set_port_action(flow, base, odp_actions, wc);
3882 commit_mpls_action(flow, base, odp_actions, wc);
3883 commit_vlan_action(flow->vlan_tci, base, odp_actions, wc);
3884 commit_set_priority_action(flow, base, odp_actions, wc);
3885 commit_set_pkt_mark_action(flow, base, odp_actions, wc);
3886
3887 return slow;
3888 }
openvswitch packages for PVE