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Extend OVS IPFIX exporter to export tunnel headers
[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 [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = { .type = NL_A_U32,
265 .optional = true },
266 };
267 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
268 const struct nlattr *userdata_attr;
269 const struct nlattr *tunnel_out_port_attr;
270
271 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
272 ds_put_cstr(ds, "userspace(error)");
273 return;
274 }
275
276 ds_put_format(ds, "userspace(pid=%"PRIu32,
277 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
278
279 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
280
281 if (userdata_attr) {
282 const uint8_t *userdata = nl_attr_get(userdata_attr);
283 size_t userdata_len = nl_attr_get_size(userdata_attr);
284 bool userdata_unspec = true;
285 union user_action_cookie cookie;
286
287 if (userdata_len >= sizeof cookie.type
288 && userdata_len <= sizeof cookie) {
289
290 memset(&cookie, 0, sizeof cookie);
291 memcpy(&cookie, userdata, userdata_len);
292
293 userdata_unspec = false;
294
295 if (userdata_len == sizeof cookie.sflow
296 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
297 ds_put_format(ds, ",sFlow("
298 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
299 vlan_tci_to_vid(cookie.sflow.vlan_tci),
300 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
301 cookie.sflow.output);
302 } else if (userdata_len == sizeof cookie.slow_path
303 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
304 ds_put_cstr(ds, ",slow_path(");
305 format_flags(ds, slow_path_reason_to_string,
306 cookie.slow_path.reason, ',');
307 ds_put_format(ds, ")");
308 } else if (userdata_len == sizeof cookie.flow_sample
309 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
310 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
311 ",collector_set_id=%"PRIu32
312 ",obs_domain_id=%"PRIu32
313 ",obs_point_id=%"PRIu32")",
314 cookie.flow_sample.probability,
315 cookie.flow_sample.collector_set_id,
316 cookie.flow_sample.obs_domain_id,
317 cookie.flow_sample.obs_point_id);
318 } else if (userdata_len >= sizeof cookie.ipfix
319 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
320 ds_put_format(ds, ",ipfix(output_port=%"PRIu32")",
321 cookie.ipfix.output_odp_port);
322 } else {
323 userdata_unspec = true;
324 }
325 }
326
327 if (userdata_unspec) {
328 size_t i;
329 ds_put_format(ds, ",userdata(");
330 for (i = 0; i < userdata_len; i++) {
331 ds_put_format(ds, "%02x", userdata[i]);
332 }
333 ds_put_char(ds, ')');
334 }
335 }
336
337 tunnel_out_port_attr = a[OVS_USERSPACE_ATTR_EGRESS_TUN_PORT];
338 if (tunnel_out_port_attr) {
339 ds_put_format(ds, ",tunnel_out_port=%"PRIu32,
340 nl_attr_get_u32(tunnel_out_port_attr));
341 }
342
343 ds_put_char(ds, ')');
344 }
345
346 static void
347 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
348 {
349 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
350 vlan_tci_to_vid(vlan_tci),
351 vlan_tci_to_pcp(vlan_tci));
352 if (!(vlan_tci & htons(VLAN_CFI))) {
353 ds_put_cstr(ds, ",cfi=0");
354 }
355 }
356
357 static void
358 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
359 {
360 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
361 mpls_lse_to_label(mpls_lse),
362 mpls_lse_to_tc(mpls_lse),
363 mpls_lse_to_ttl(mpls_lse),
364 mpls_lse_to_bos(mpls_lse));
365 }
366
367 static void
368 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
369 const struct ovs_key_mpls *mpls_mask, int n)
370 {
371 if (n == 1) {
372 ovs_be32 key = mpls_key->mpls_lse;
373
374 if (mpls_mask == NULL) {
375 format_mpls_lse(ds, key);
376 } else {
377 ovs_be32 mask = mpls_mask->mpls_lse;
378
379 ds_put_format(ds, "label=%"PRIu32"/0x%x,tc=%d/%x,ttl=%d/0x%x,bos=%d/%x",
380 mpls_lse_to_label(key), mpls_lse_to_label(mask),
381 mpls_lse_to_tc(key), mpls_lse_to_tc(mask),
382 mpls_lse_to_ttl(key), mpls_lse_to_ttl(mask),
383 mpls_lse_to_bos(key), mpls_lse_to_bos(mask));
384 }
385 } else {
386 int i;
387
388 for (i = 0; i < n; i++) {
389 ds_put_format(ds, "lse%d=%#"PRIx32,
390 i, ntohl(mpls_key[i].mpls_lse));
391 if (mpls_mask) {
392 ds_put_format(ds, "/%#"PRIx32, ntohl(mpls_mask[i].mpls_lse));
393 }
394 ds_put_char(ds, ',');
395 }
396 ds_chomp(ds, ',');
397 }
398 }
399
400 static void
401 format_odp_recirc_action(struct ds *ds, uint32_t recirc_id)
402 {
403 ds_put_format(ds, "recirc(%"PRIu32")", recirc_id);
404 }
405
406 static void
407 format_odp_hash_action(struct ds *ds, const struct ovs_action_hash *hash_act)
408 {
409 ds_put_format(ds, "hash(");
410
411 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
412 ds_put_format(ds, "hash_l4(%"PRIu32")", hash_act->hash_basis);
413 } else {
414 ds_put_format(ds, "Unknown hash algorithm(%"PRIu32")",
415 hash_act->hash_alg);
416 }
417 ds_put_format(ds, ")");
418 }
419
420 static void
421 format_odp_action(struct ds *ds, const struct nlattr *a)
422 {
423 int expected_len;
424 enum ovs_action_attr type = nl_attr_type(a);
425 const struct ovs_action_push_vlan *vlan;
426
427 expected_len = odp_action_len(nl_attr_type(a));
428 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
429 ds_put_format(ds, "bad length %"PRIuSIZE", expected %d for: ",
430 nl_attr_get_size(a), expected_len);
431 format_generic_odp_action(ds, a);
432 return;
433 }
434
435 switch (type) {
436 case OVS_ACTION_ATTR_OUTPUT:
437 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
438 break;
439 case OVS_ACTION_ATTR_USERSPACE:
440 format_odp_userspace_action(ds, a);
441 break;
442 case OVS_ACTION_ATTR_RECIRC:
443 format_odp_recirc_action(ds, nl_attr_get_u32(a));
444 break;
445 case OVS_ACTION_ATTR_HASH:
446 format_odp_hash_action(ds, nl_attr_get(a));
447 break;
448 case OVS_ACTION_ATTR_SET:
449 ds_put_cstr(ds, "set(");
450 format_odp_key_attr(nl_attr_get(a), NULL, NULL, ds, true);
451 ds_put_cstr(ds, ")");
452 break;
453 case OVS_ACTION_ATTR_PUSH_VLAN:
454 vlan = nl_attr_get(a);
455 ds_put_cstr(ds, "push_vlan(");
456 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
457 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
458 }
459 format_vlan_tci(ds, vlan->vlan_tci);
460 ds_put_char(ds, ')');
461 break;
462 case OVS_ACTION_ATTR_POP_VLAN:
463 ds_put_cstr(ds, "pop_vlan");
464 break;
465 case OVS_ACTION_ATTR_PUSH_MPLS: {
466 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
467 ds_put_cstr(ds, "push_mpls(");
468 format_mpls_lse(ds, mpls->mpls_lse);
469 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
470 break;
471 }
472 case OVS_ACTION_ATTR_POP_MPLS: {
473 ovs_be16 ethertype = nl_attr_get_be16(a);
474 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
475 break;
476 }
477 case OVS_ACTION_ATTR_SAMPLE:
478 format_odp_sample_action(ds, a);
479 break;
480 case OVS_ACTION_ATTR_UNSPEC:
481 case __OVS_ACTION_ATTR_MAX:
482 default:
483 format_generic_odp_action(ds, a);
484 break;
485 }
486 }
487
488 void
489 format_odp_actions(struct ds *ds, const struct nlattr *actions,
490 size_t actions_len)
491 {
492 if (actions_len) {
493 const struct nlattr *a;
494 unsigned int left;
495
496 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
497 if (a != actions) {
498 ds_put_char(ds, ',');
499 }
500 format_odp_action(ds, a);
501 }
502 if (left) {
503 int i;
504
505 if (left == actions_len) {
506 ds_put_cstr(ds, "<empty>");
507 }
508 ds_put_format(ds, ",***%u leftover bytes*** (", left);
509 for (i = 0; i < left; i++) {
510 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
511 }
512 ds_put_char(ds, ')');
513 }
514 } else {
515 ds_put_cstr(ds, "drop");
516 }
517 }
518
519 /* Separate out parse_odp_userspace_action() function. */
520 static int
521 parse_odp_userspace_action(const char *s, struct ofpbuf *actions)
522 {
523 uint32_t pid;
524 union user_action_cookie cookie;
525 struct ofpbuf buf;
526 odp_port_t tunnel_out_port;
527 int n = -1;
528 void *user_data = NULL;
529 size_t user_data_size = 0;
530
531 if (!ovs_scan(s, "userspace(pid=%"SCNi32"%n", &pid, &n)) {
532 return -EINVAL;
533 }
534
535 {
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 n1 = -1;
543 if (ovs_scan(&s[n], ",sFlow(vid=%i,"
544 "pcp=%i,output=%"SCNi32")%n",
545 &vid, &pcp, &output, &n1)) {
546 uint16_t tci;
547
548 n += n1;
549 tci = vid | (pcp << VLAN_PCP_SHIFT);
550 if (tci) {
551 tci |= VLAN_CFI;
552 }
553
554 cookie.type = USER_ACTION_COOKIE_SFLOW;
555 cookie.sflow.vlan_tci = htons(tci);
556 cookie.sflow.output = output;
557 user_data = &cookie;
558 user_data_size = sizeof cookie.sflow;
559 } else if (ovs_scan(&s[n], ",slow_path%n",
560 &n1)) {
561 int res;
562
563 n += n1;
564 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
565 cookie.slow_path.unused = 0;
566 cookie.slow_path.reason = 0;
567
568 res = parse_flags(&s[n], slow_path_reason_to_string,
569 &cookie.slow_path.reason);
570 if (res < 0) {
571 return res;
572 }
573 n += res;
574
575 user_data = &cookie;
576 user_data_size = sizeof cookie.slow_path;
577 } else if (ovs_scan(&s[n], ",flow_sample(probability=%"SCNi32","
578 "collector_set_id=%"SCNi32","
579 "obs_domain_id=%"SCNi32","
580 "obs_point_id=%"SCNi32")%n",
581 &probability, &collector_set_id,
582 &obs_domain_id, &obs_point_id, &n1)) {
583 n += n1;
584
585 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
586 cookie.flow_sample.probability = probability;
587 cookie.flow_sample.collector_set_id = collector_set_id;
588 cookie.flow_sample.obs_domain_id = obs_domain_id;
589 cookie.flow_sample.obs_point_id = obs_point_id;
590 user_data = &cookie;
591 user_data_size = sizeof cookie.flow_sample;
592 } else if (ovs_scan(&s[n], ",ipfix(output_port=%"SCNi32")%n",
593 &output, &n1) ) {
594 n += n1;
595 cookie.type = USER_ACTION_COOKIE_IPFIX;
596 cookie.ipfix.output_odp_port = u32_to_odp(output);
597 user_data = &cookie;
598 user_data_size = sizeof cookie.ipfix;
599 } else if (ovs_scan(&s[n], ",userdata(%n",
600 &n1)) {
601 char *end;
602
603 n += n1;
604 ofpbuf_init(&buf, 16);
605 end = ofpbuf_put_hex(&buf, &s[n], NULL);
606 if (end[0] != ')') {
607 return -EINVAL;
608 }
609 user_data = ofpbuf_data(&buf);
610 user_data_size = ofpbuf_size(&buf);
611 n = (end + 1) - s;
612 }
613 }
614
615 {
616 int n1 = -1;
617 if (ovs_scan(&s[n], ",tunnel_out_port=%"SCNi32")%n",
618 &tunnel_out_port, &n1)) {
619 odp_put_userspace_action(pid, user_data, user_data_size, tunnel_out_port, actions);
620 return n + n1;
621 } else if (s[n] == ')') {
622 odp_put_userspace_action(pid, user_data, user_data_size, ODPP_NONE, actions);
623 return n + 1;
624 }
625 }
626
627 return -EINVAL;
628 }
629
630 static int
631 parse_odp_action(const char *s, const struct simap *port_names,
632 struct ofpbuf *actions)
633 {
634 {
635 uint32_t port;
636 int n;
637
638 if (ovs_scan(s, "%"SCNi32"%n", &port, &n)) {
639 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
640 return n;
641 }
642 }
643
644 if (port_names) {
645 int len = strcspn(s, delimiters);
646 struct simap_node *node;
647
648 node = simap_find_len(port_names, s, len);
649 if (node) {
650 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
651 return len;
652 }
653 }
654
655 if (!strncmp(s, "userspace(", 10)) {
656 return parse_odp_userspace_action(s, actions);
657 }
658
659 if (!strncmp(s, "set(", 4)) {
660 size_t start_ofs;
661 int retval;
662
663 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
664 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, NULL);
665 if (retval < 0) {
666 return retval;
667 }
668 if (s[retval + 4] != ')') {
669 return -EINVAL;
670 }
671 nl_msg_end_nested(actions, start_ofs);
672 return retval + 5;
673 }
674
675 {
676 struct ovs_action_push_vlan push;
677 int tpid = ETH_TYPE_VLAN;
678 int vid, pcp;
679 int cfi = 1;
680 int n = -1;
681
682 if (ovs_scan(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)
683 || ovs_scan(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
684 &vid, &pcp, &cfi, &n)
685 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
686 &tpid, &vid, &pcp, &n)
687 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
688 &tpid, &vid, &pcp, &cfi, &n)) {
689 push.vlan_tpid = htons(tpid);
690 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
691 | (pcp << VLAN_PCP_SHIFT)
692 | (cfi ? VLAN_CFI : 0));
693 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
694 &push, sizeof push);
695
696 return n;
697 }
698 }
699
700 if (!strncmp(s, "pop_vlan", 8)) {
701 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
702 return 8;
703 }
704
705 {
706 double percentage;
707 int n = -1;
708
709 if (ovs_scan(s, "sample(sample=%lf%%,actions(%n", &percentage, &n)
710 && percentage >= 0. && percentage <= 100.0) {
711 size_t sample_ofs, actions_ofs;
712 double probability;
713
714 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
715 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
716 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
717 (probability <= 0 ? 0
718 : probability >= UINT32_MAX ? UINT32_MAX
719 : probability));
720
721 actions_ofs = nl_msg_start_nested(actions,
722 OVS_SAMPLE_ATTR_ACTIONS);
723 for (;;) {
724 int retval;
725
726 n += strspn(s + n, delimiters);
727 if (s[n] == ')') {
728 break;
729 }
730
731 retval = parse_odp_action(s + n, port_names, actions);
732 if (retval < 0) {
733 return retval;
734 }
735 n += retval;
736 }
737 nl_msg_end_nested(actions, actions_ofs);
738 nl_msg_end_nested(actions, sample_ofs);
739
740 return s[n + 1] == ')' ? n + 2 : -EINVAL;
741 }
742 }
743
744 return -EINVAL;
745 }
746
747 /* Parses the string representation of datapath actions, in the format output
748 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
749 * value. On success, the ODP actions are appended to 'actions' as a series of
750 * Netlink attributes. On failure, no data is appended to 'actions'. Either
751 * way, 'actions''s data might be reallocated. */
752 int
753 odp_actions_from_string(const char *s, const struct simap *port_names,
754 struct ofpbuf *actions)
755 {
756 size_t old_size;
757
758 if (!strcasecmp(s, "drop")) {
759 return 0;
760 }
761
762 old_size = ofpbuf_size(actions);
763 for (;;) {
764 int retval;
765
766 s += strspn(s, delimiters);
767 if (!*s) {
768 return 0;
769 }
770
771 retval = parse_odp_action(s, port_names, actions);
772 if (retval < 0 || !strchr(delimiters, s[retval])) {
773 ofpbuf_set_size(actions, old_size);
774 return -retval;
775 }
776 s += retval;
777 }
778
779 return 0;
780 }
781 \f
782 /* Returns the correct length of the payload for a flow key attribute of the
783 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
784 * is variable length. */
785 static int
786 odp_flow_key_attr_len(uint16_t type)
787 {
788 if (type > OVS_KEY_ATTR_MAX) {
789 return -1;
790 }
791
792 switch ((enum ovs_key_attr) type) {
793 case OVS_KEY_ATTR_ENCAP: return -2;
794 case OVS_KEY_ATTR_PRIORITY: return 4;
795 case OVS_KEY_ATTR_SKB_MARK: return 4;
796 case OVS_KEY_ATTR_DP_HASH: return 4;
797 case OVS_KEY_ATTR_RECIRC_ID: return 4;
798 case OVS_KEY_ATTR_TUNNEL: return -2;
799 case OVS_KEY_ATTR_IN_PORT: return 4;
800 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
801 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
802 case OVS_KEY_ATTR_ETHERTYPE: return 2;
803 case OVS_KEY_ATTR_MPLS: return -2;
804 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
805 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
806 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
807 case OVS_KEY_ATTR_TCP_FLAGS: return 2;
808 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
809 case OVS_KEY_ATTR_SCTP: return sizeof(struct ovs_key_sctp);
810 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
811 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
812 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
813 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
814
815 case OVS_KEY_ATTR_UNSPEC:
816 case __OVS_KEY_ATTR_MAX:
817 return -1;
818 }
819
820 return -1;
821 }
822
823 static void
824 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
825 {
826 size_t len = nl_attr_get_size(a);
827 if (len) {
828 const uint8_t *unspec;
829 unsigned int i;
830
831 unspec = nl_attr_get(a);
832 for (i = 0; i < len; i++) {
833 if (i) {
834 ds_put_char(ds, ' ');
835 }
836 ds_put_format(ds, "%02x", unspec[i]);
837 }
838 }
839 }
840
841 static const char *
842 ovs_frag_type_to_string(enum ovs_frag_type type)
843 {
844 switch (type) {
845 case OVS_FRAG_TYPE_NONE:
846 return "no";
847 case OVS_FRAG_TYPE_FIRST:
848 return "first";
849 case OVS_FRAG_TYPE_LATER:
850 return "later";
851 case __OVS_FRAG_TYPE_MAX:
852 default:
853 return "<error>";
854 }
855 }
856
857 static int
858 tunnel_key_attr_len(int type)
859 {
860 switch (type) {
861 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
862 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
863 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
864 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
865 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
866 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
867 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
868 case OVS_TUNNEL_KEY_ATTR_TP_SRC: return 2;
869 case OVS_TUNNEL_KEY_ATTR_TP_DST: return 2;
870 case OVS_TUNNEL_KEY_ATTR_OAM: return 0;
871 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: return -2;
872 case __OVS_TUNNEL_KEY_ATTR_MAX:
873 return -1;
874 }
875 return -1;
876 }
877
878 #define GENEVE_OPT(class, type) ((OVS_FORCE uint32_t)(class) << 8 | (type))
879 static int
880 parse_geneve_opts(const struct nlattr *attr)
881 {
882 int opts_len = nl_attr_get_size(attr);
883 const struct geneve_opt *opt = nl_attr_get(attr);
884
885 while (opts_len > 0) {
886 int len;
887
888 if (opts_len < sizeof(*opt)) {
889 return -EINVAL;
890 }
891
892 len = sizeof(*opt) + opt->length * 4;
893 if (len > opts_len) {
894 return -EINVAL;
895 }
896
897 switch (GENEVE_OPT(opt->opt_class, opt->type)) {
898 default:
899 if (opt->type & GENEVE_CRIT_OPT_TYPE) {
900 return -EINVAL;
901 }
902 };
903
904 opt = opt + len / sizeof(*opt);
905 opts_len -= len;
906 };
907
908 return 0;
909 }
910
911 enum odp_key_fitness
912 odp_tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
913 {
914 unsigned int left;
915 const struct nlattr *a;
916 bool ttl = false;
917 bool unknown = false;
918
919 NL_NESTED_FOR_EACH(a, left, attr) {
920 uint16_t type = nl_attr_type(a);
921 size_t len = nl_attr_get_size(a);
922 int expected_len = tunnel_key_attr_len(type);
923
924 if (len != expected_len && expected_len >= 0) {
925 return ODP_FIT_ERROR;
926 }
927
928 switch (type) {
929 case OVS_TUNNEL_KEY_ATTR_ID:
930 tun->tun_id = nl_attr_get_be64(a);
931 tun->flags |= FLOW_TNL_F_KEY;
932 break;
933 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
934 tun->ip_src = nl_attr_get_be32(a);
935 break;
936 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
937 tun->ip_dst = nl_attr_get_be32(a);
938 break;
939 case OVS_TUNNEL_KEY_ATTR_TOS:
940 tun->ip_tos = nl_attr_get_u8(a);
941 break;
942 case OVS_TUNNEL_KEY_ATTR_TTL:
943 tun->ip_ttl = nl_attr_get_u8(a);
944 ttl = true;
945 break;
946 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
947 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
948 break;
949 case OVS_TUNNEL_KEY_ATTR_CSUM:
950 tun->flags |= FLOW_TNL_F_CSUM;
951 break;
952 case OVS_TUNNEL_KEY_ATTR_TP_SRC:
953 tun->tp_src = nl_attr_get_be16(a);
954 break;
955 case OVS_TUNNEL_KEY_ATTR_TP_DST:
956 tun->tp_dst = nl_attr_get_be16(a);
957 break;
958 case OVS_TUNNEL_KEY_ATTR_OAM:
959 tun->flags |= FLOW_TNL_F_OAM;
960 break;
961 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: {
962 if (parse_geneve_opts(a)) {
963 return ODP_FIT_ERROR;
964 }
965 /* It is necessary to reproduce options exactly (including order)
966 * so it's easiest to just echo them back. */
967 unknown = true;
968 break;
969 }
970 default:
971 /* Allow this to show up as unexpected, if there are unknown
972 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
973 unknown = true;
974 break;
975 }
976 }
977
978 if (!ttl) {
979 return ODP_FIT_ERROR;
980 }
981 if (unknown) {
982 return ODP_FIT_TOO_MUCH;
983 }
984 return ODP_FIT_PERFECT;
985 }
986
987 static void
988 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
989 {
990 size_t tun_key_ofs;
991
992 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
993
994 /* tun_id != 0 without FLOW_TNL_F_KEY is valid if tun_key is a mask. */
995 if (tun_key->tun_id || tun_key->flags & FLOW_TNL_F_KEY) {
996 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
997 }
998 if (tun_key->ip_src) {
999 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
1000 }
1001 if (tun_key->ip_dst) {
1002 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
1003 }
1004 if (tun_key->ip_tos) {
1005 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
1006 }
1007 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
1008 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
1009 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
1010 }
1011 if (tun_key->flags & FLOW_TNL_F_CSUM) {
1012 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
1013 }
1014 if (tun_key->tp_src) {
1015 nl_msg_put_be16(a, OVS_TUNNEL_KEY_ATTR_TP_SRC, tun_key->tp_src);
1016 }
1017 if (tun_key->tp_dst) {
1018 nl_msg_put_be16(a, OVS_TUNNEL_KEY_ATTR_TP_DST, tun_key->tp_dst);
1019 }
1020 if (tun_key->flags & FLOW_TNL_F_OAM) {
1021 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_OAM);
1022 }
1023
1024 nl_msg_end_nested(a, tun_key_ofs);
1025 }
1026
1027 static bool
1028 odp_mask_attr_is_wildcard(const struct nlattr *ma)
1029 {
1030 return is_all_zeros(nl_attr_get(ma), nl_attr_get_size(ma));
1031 }
1032
1033 static bool
1034 odp_mask_attr_is_exact(const struct nlattr *ma)
1035 {
1036 bool is_exact = false;
1037 enum ovs_key_attr attr = nl_attr_type(ma);
1038
1039 if (attr == OVS_KEY_ATTR_TUNNEL) {
1040 /* XXX this is a hack for now. Should change
1041 * the exact match dection to per field
1042 * instead of per attribute.
1043 */
1044 struct flow_tnl tun_mask;
1045 memset(&tun_mask, 0, sizeof tun_mask);
1046 odp_tun_key_from_attr(ma, &tun_mask);
1047 if (tun_mask.flags == (FLOW_TNL_F_KEY
1048 | FLOW_TNL_F_DONT_FRAGMENT
1049 | FLOW_TNL_F_CSUM
1050 | FLOW_TNL_F_OAM)) {
1051 /* The flags are exact match, check the remaining fields. */
1052 tun_mask.flags = 0xffff;
1053 is_exact = is_all_ones((uint8_t *)&tun_mask,
1054 offsetof(struct flow_tnl, ip_ttl));
1055 }
1056 } else {
1057 is_exact = is_all_ones(nl_attr_get(ma), nl_attr_get_size(ma));
1058 }
1059
1060 return is_exact;
1061 }
1062
1063 void
1064 odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no,
1065 char *port_name)
1066 {
1067 struct odp_portno_names *odp_portno_names;
1068
1069 odp_portno_names = xmalloc(sizeof *odp_portno_names);
1070 odp_portno_names->port_no = port_no;
1071 odp_portno_names->name = xstrdup(port_name);
1072 hmap_insert(portno_names, &odp_portno_names->hmap_node,
1073 hash_odp_port(port_no));
1074 }
1075
1076 static char *
1077 odp_portno_names_get(const struct hmap *portno_names, odp_port_t port_no)
1078 {
1079 struct odp_portno_names *odp_portno_names;
1080
1081 HMAP_FOR_EACH_IN_BUCKET (odp_portno_names, hmap_node,
1082 hash_odp_port(port_no), portno_names) {
1083 if (odp_portno_names->port_no == port_no) {
1084 return odp_portno_names->name;
1085 }
1086 }
1087 return NULL;
1088 }
1089
1090 void
1091 odp_portno_names_destroy(struct hmap *portno_names)
1092 {
1093 struct odp_portno_names *odp_portno_names, *odp_portno_names_next;
1094 HMAP_FOR_EACH_SAFE (odp_portno_names, odp_portno_names_next,
1095 hmap_node, portno_names) {
1096 hmap_remove(portno_names, &odp_portno_names->hmap_node);
1097 free(odp_portno_names->name);
1098 free(odp_portno_names);
1099 }
1100 }
1101
1102 static void
1103 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
1104 const struct hmap *portno_names, struct ds *ds,
1105 bool verbose)
1106 {
1107 struct flow_tnl tun_key;
1108 enum ovs_key_attr attr = nl_attr_type(a);
1109 char namebuf[OVS_KEY_ATTR_BUFSIZE];
1110 int expected_len;
1111 bool is_exact;
1112
1113 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
1114
1115 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
1116
1117 {
1118 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
1119 if (expected_len != -2) {
1120 bool bad_key_len = nl_attr_get_size(a) != expected_len;
1121 bool bad_mask_len = ma && nl_attr_get_size(ma) != expected_len;
1122
1123 if (bad_key_len || bad_mask_len) {
1124 if (bad_key_len) {
1125 ds_put_format(ds, "(bad key length %"PRIuSIZE", expected %d)(",
1126 nl_attr_get_size(a), expected_len);
1127 }
1128 format_generic_odp_key(a, ds);
1129 if (ma) {
1130 ds_put_char(ds, '/');
1131 if (bad_mask_len) {
1132 ds_put_format(ds, "(bad mask length %"PRIuSIZE", expected %d)(",
1133 nl_attr_get_size(ma), expected_len);
1134 }
1135 format_generic_odp_key(ma, ds);
1136 }
1137 ds_put_char(ds, ')');
1138 return;
1139 }
1140 }
1141 }
1142
1143 ds_put_char(ds, '(');
1144 switch (attr) {
1145 case OVS_KEY_ATTR_ENCAP:
1146 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
1147 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
1148 nl_attr_get(ma), nl_attr_get_size(ma), NULL, ds,
1149 verbose);
1150 } else if (nl_attr_get_size(a)) {
1151 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, NULL,
1152 ds, verbose);
1153 }
1154 break;
1155
1156 case OVS_KEY_ATTR_PRIORITY:
1157 case OVS_KEY_ATTR_SKB_MARK:
1158 case OVS_KEY_ATTR_DP_HASH:
1159 case OVS_KEY_ATTR_RECIRC_ID:
1160 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
1161 if (!is_exact) {
1162 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1163 }
1164 break;
1165
1166 case OVS_KEY_ATTR_TUNNEL:
1167 memset(&tun_key, 0, sizeof tun_key);
1168 if (odp_tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
1169 ds_put_format(ds, "error");
1170 } else if (!is_exact) {
1171 struct flow_tnl tun_mask;
1172
1173 memset(&tun_mask, 0, sizeof tun_mask);
1174 odp_tun_key_from_attr(ma, &tun_mask);
1175 ds_put_format(ds, "tun_id=%#"PRIx64"/%#"PRIx64
1176 ",src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1177 ",tos=%#"PRIx8"/%#"PRIx8",ttl=%"PRIu8"/%#"PRIx8
1178 ",flags(",
1179 ntohll(tun_key.tun_id), ntohll(tun_mask.tun_id),
1180 IP_ARGS(tun_key.ip_src), IP_ARGS(tun_mask.ip_src),
1181 IP_ARGS(tun_key.ip_dst), IP_ARGS(tun_mask.ip_dst),
1182 tun_key.ip_tos, tun_mask.ip_tos,
1183 tun_key.ip_ttl, tun_mask.ip_ttl);
1184
1185 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1186
1187 /* XXX This code is correct, but enabling it would break the unit
1188 test. Disable it for now until the input parser is fixed.
1189
1190 ds_put_char(ds, '/');
1191 format_flags(ds, flow_tun_flag_to_string, tun_mask.flags, ',');
1192 */
1193 ds_put_char(ds, ')');
1194 } else {
1195 ds_put_format(ds, "tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
1196 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
1197 ntohll(tun_key.tun_id),
1198 IP_ARGS(tun_key.ip_src),
1199 IP_ARGS(tun_key.ip_dst),
1200 tun_key.ip_tos, tun_key.ip_ttl);
1201
1202 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1203 ds_put_char(ds, ')');
1204 }
1205 break;
1206
1207 case OVS_KEY_ATTR_IN_PORT:
1208 if (portno_names && verbose && is_exact) {
1209 char *name = odp_portno_names_get(portno_names,
1210 u32_to_odp(nl_attr_get_u32(a)));
1211 if (name) {
1212 ds_put_format(ds, "%s", name);
1213 } else {
1214 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1215 }
1216 } else {
1217 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1218 if (!is_exact) {
1219 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1220 }
1221 }
1222 break;
1223
1224 case OVS_KEY_ATTR_ETHERNET:
1225 if (!is_exact) {
1226 const struct ovs_key_ethernet *eth_mask = nl_attr_get(ma);
1227 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1228
1229 ds_put_format(ds, "src="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1230 ",dst="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1231 ETH_ADDR_ARGS(eth_key->eth_src),
1232 ETH_ADDR_ARGS(eth_mask->eth_src),
1233 ETH_ADDR_ARGS(eth_key->eth_dst),
1234 ETH_ADDR_ARGS(eth_mask->eth_dst));
1235 } else {
1236 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1237
1238 ds_put_format(ds, "src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT,
1239 ETH_ADDR_ARGS(eth_key->eth_src),
1240 ETH_ADDR_ARGS(eth_key->eth_dst));
1241 }
1242 break;
1243
1244 case OVS_KEY_ATTR_VLAN:
1245 {
1246 ovs_be16 vlan_tci = nl_attr_get_be16(a);
1247 if (!is_exact) {
1248 ovs_be16 mask = nl_attr_get_be16(ma);
1249 ds_put_format(ds, "vid=%"PRIu16"/0x%"PRIx16",pcp=%d/0x%x,cfi=%d/%d",
1250 vlan_tci_to_vid(vlan_tci),
1251 vlan_tci_to_vid(mask),
1252 vlan_tci_to_pcp(vlan_tci),
1253 vlan_tci_to_pcp(mask),
1254 vlan_tci_to_cfi(vlan_tci),
1255 vlan_tci_to_cfi(mask));
1256 } else {
1257 format_vlan_tci(ds, vlan_tci);
1258 }
1259 }
1260 break;
1261
1262 case OVS_KEY_ATTR_MPLS: {
1263 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
1264 const struct ovs_key_mpls *mpls_mask = NULL;
1265 size_t size = nl_attr_get_size(a);
1266
1267 if (!size || size % sizeof *mpls_key) {
1268 ds_put_format(ds, "(bad key length %"PRIuSIZE")",
1269 nl_attr_get_size(a));
1270 return;
1271 }
1272 if (!is_exact) {
1273 mpls_mask = nl_attr_get(ma);
1274 if (nl_attr_get_size(a) != nl_attr_get_size(ma)) {
1275 ds_put_format(ds, "(key length %"PRIuSIZE" != "
1276 "mask length %"PRIuSIZE")",
1277 nl_attr_get_size(a), nl_attr_get_size(ma));
1278 return;
1279 }
1280 }
1281 format_mpls(ds, mpls_key, mpls_mask, size / sizeof *mpls_key);
1282 break;
1283 }
1284
1285 case OVS_KEY_ATTR_ETHERTYPE:
1286 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
1287 if (!is_exact) {
1288 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
1289 }
1290 break;
1291
1292 case OVS_KEY_ATTR_IPV4:
1293 if (!is_exact) {
1294 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1295 const struct ovs_key_ipv4 *ipv4_mask = nl_attr_get(ma);
1296
1297 ds_put_format(ds, "src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1298 ",proto=%"PRIu8"/%#"PRIx8",tos=%#"PRIx8"/%#"PRIx8
1299 ",ttl=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1300 IP_ARGS(ipv4_key->ipv4_src),
1301 IP_ARGS(ipv4_mask->ipv4_src),
1302 IP_ARGS(ipv4_key->ipv4_dst),
1303 IP_ARGS(ipv4_mask->ipv4_dst),
1304 ipv4_key->ipv4_proto, ipv4_mask->ipv4_proto,
1305 ipv4_key->ipv4_tos, ipv4_mask->ipv4_tos,
1306 ipv4_key->ipv4_ttl, ipv4_mask->ipv4_ttl,
1307 ovs_frag_type_to_string(ipv4_key->ipv4_frag),
1308 ipv4_mask->ipv4_frag);
1309 } else {
1310 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1311
1312 ds_put_format(ds, "src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
1313 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s",
1314 IP_ARGS(ipv4_key->ipv4_src),
1315 IP_ARGS(ipv4_key->ipv4_dst),
1316 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
1317 ipv4_key->ipv4_ttl,
1318 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
1319 }
1320 break;
1321
1322 case OVS_KEY_ATTR_IPV6:
1323 if (!is_exact) {
1324 const struct ovs_key_ipv6 *ipv6_key, *ipv6_mask;
1325 char src_str[INET6_ADDRSTRLEN];
1326 char dst_str[INET6_ADDRSTRLEN];
1327 char src_mask[INET6_ADDRSTRLEN];
1328 char dst_mask[INET6_ADDRSTRLEN];
1329
1330 ipv6_key = nl_attr_get(a);
1331 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1332 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1333
1334 ipv6_mask = nl_attr_get(ma);
1335 inet_ntop(AF_INET6, ipv6_mask->ipv6_src, src_mask, sizeof src_mask);
1336 inet_ntop(AF_INET6, ipv6_mask->ipv6_dst, dst_mask, sizeof dst_mask);
1337
1338 ds_put_format(ds, "src=%s/%s,dst=%s/%s,label=%#"PRIx32"/%#"PRIx32
1339 ",proto=%"PRIu8"/%#"PRIx8",tclass=%#"PRIx8"/%#"PRIx8
1340 ",hlimit=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1341 src_str, src_mask, dst_str, dst_mask,
1342 ntohl(ipv6_key->ipv6_label),
1343 ntohl(ipv6_mask->ipv6_label),
1344 ipv6_key->ipv6_proto, ipv6_mask->ipv6_proto,
1345 ipv6_key->ipv6_tclass, ipv6_mask->ipv6_tclass,
1346 ipv6_key->ipv6_hlimit, ipv6_mask->ipv6_hlimit,
1347 ovs_frag_type_to_string(ipv6_key->ipv6_frag),
1348 ipv6_mask->ipv6_frag);
1349 } else {
1350 const struct ovs_key_ipv6 *ipv6_key;
1351 char src_str[INET6_ADDRSTRLEN];
1352 char dst_str[INET6_ADDRSTRLEN];
1353
1354 ipv6_key = nl_attr_get(a);
1355 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1356 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1357
1358 ds_put_format(ds, "src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
1359 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s",
1360 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
1361 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
1362 ipv6_key->ipv6_hlimit,
1363 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
1364 }
1365 break;
1366
1367 case OVS_KEY_ATTR_TCP:
1368 if (!is_exact) {
1369 const struct ovs_key_tcp *tcp_mask = nl_attr_get(ma);
1370 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1371
1372 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1373 ",dst=%"PRIu16"/%#"PRIx16,
1374 ntohs(tcp_key->tcp_src), ntohs(tcp_mask->tcp_src),
1375 ntohs(tcp_key->tcp_dst), ntohs(tcp_mask->tcp_dst));
1376 } else {
1377 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1378
1379 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1380 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
1381 }
1382 break;
1383
1384 case OVS_KEY_ATTR_TCP_FLAGS:
1385 ds_put_format(ds, "0x%03"PRIx16, ntohs(nl_attr_get_be16(a)));
1386 if (!is_exact) {
1387 ds_put_format(ds, "/0x%03"PRIx16, ntohs(nl_attr_get_be16(ma)));
1388 }
1389 break;
1390
1391 case OVS_KEY_ATTR_UDP:
1392 if (!is_exact) {
1393 const struct ovs_key_udp *udp_mask = nl_attr_get(ma);
1394 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1395
1396 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1397 ",dst=%"PRIu16"/%#"PRIx16,
1398 ntohs(udp_key->udp_src), ntohs(udp_mask->udp_src),
1399 ntohs(udp_key->udp_dst), ntohs(udp_mask->udp_dst));
1400 } else {
1401 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1402
1403 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1404 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
1405 }
1406 break;
1407
1408 case OVS_KEY_ATTR_SCTP:
1409 if (ma) {
1410 const struct ovs_key_sctp *sctp_mask = nl_attr_get(ma);
1411 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1412
1413 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1414 ",dst=%"PRIu16"/%#"PRIx16,
1415 ntohs(sctp_key->sctp_src), ntohs(sctp_mask->sctp_src),
1416 ntohs(sctp_key->sctp_dst), ntohs(sctp_mask->sctp_dst));
1417 } else {
1418 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1419
1420 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1421 ntohs(sctp_key->sctp_src), ntohs(sctp_key->sctp_dst));
1422 }
1423 break;
1424
1425 case OVS_KEY_ATTR_ICMP:
1426 if (!is_exact) {
1427 const struct ovs_key_icmp *icmp_mask = nl_attr_get(ma);
1428 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1429
1430 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1431 icmp_key->icmp_type, icmp_mask->icmp_type,
1432 icmp_key->icmp_code, icmp_mask->icmp_code);
1433 } else {
1434 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1435
1436 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1437 icmp_key->icmp_type, icmp_key->icmp_code);
1438 }
1439 break;
1440
1441 case OVS_KEY_ATTR_ICMPV6:
1442 if (!is_exact) {
1443 const struct ovs_key_icmpv6 *icmpv6_mask = nl_attr_get(ma);
1444 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1445
1446 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1447 icmpv6_key->icmpv6_type, icmpv6_mask->icmpv6_type,
1448 icmpv6_key->icmpv6_code, icmpv6_mask->icmpv6_code);
1449 } else {
1450 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1451
1452 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1453 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
1454 }
1455 break;
1456
1457 case OVS_KEY_ATTR_ARP:
1458 if (!is_exact) {
1459 const struct ovs_key_arp *arp_mask = nl_attr_get(ma);
1460 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1461
1462 ds_put_format(ds, "sip="IP_FMT"/"IP_FMT",tip="IP_FMT"/"IP_FMT
1463 ",op=%"PRIu16"/%#"PRIx16
1464 ",sha="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1465 ",tha="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1466 IP_ARGS(arp_key->arp_sip),
1467 IP_ARGS(arp_mask->arp_sip),
1468 IP_ARGS(arp_key->arp_tip),
1469 IP_ARGS(arp_mask->arp_tip),
1470 ntohs(arp_key->arp_op), ntohs(arp_mask->arp_op),
1471 ETH_ADDR_ARGS(arp_key->arp_sha),
1472 ETH_ADDR_ARGS(arp_mask->arp_sha),
1473 ETH_ADDR_ARGS(arp_key->arp_tha),
1474 ETH_ADDR_ARGS(arp_mask->arp_tha));
1475 } else {
1476 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1477
1478 ds_put_format(ds, "sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
1479 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT,
1480 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
1481 ntohs(arp_key->arp_op),
1482 ETH_ADDR_ARGS(arp_key->arp_sha),
1483 ETH_ADDR_ARGS(arp_key->arp_tha));
1484 }
1485 break;
1486
1487 case OVS_KEY_ATTR_ND: {
1488 const struct ovs_key_nd *nd_key, *nd_mask = NULL;
1489 char target[INET6_ADDRSTRLEN];
1490
1491 nd_key = nl_attr_get(a);
1492 if (!is_exact) {
1493 nd_mask = nl_attr_get(ma);
1494 }
1495
1496 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
1497 ds_put_format(ds, "target=%s", target);
1498 if (!is_exact) {
1499 inet_ntop(AF_INET6, nd_mask->nd_target, target, sizeof target);
1500 ds_put_format(ds, "/%s", target);
1501 }
1502
1503 if (!eth_addr_is_zero(nd_key->nd_sll)) {
1504 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
1505 ETH_ADDR_ARGS(nd_key->nd_sll));
1506 if (!is_exact) {
1507 ds_put_format(ds, "/"ETH_ADDR_FMT,
1508 ETH_ADDR_ARGS(nd_mask->nd_sll));
1509 }
1510 }
1511 if (!eth_addr_is_zero(nd_key->nd_tll)) {
1512 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
1513 ETH_ADDR_ARGS(nd_key->nd_tll));
1514 if (!is_exact) {
1515 ds_put_format(ds, "/"ETH_ADDR_FMT,
1516 ETH_ADDR_ARGS(nd_mask->nd_tll));
1517 }
1518 }
1519 break;
1520 }
1521 case OVS_KEY_ATTR_UNSPEC:
1522 case __OVS_KEY_ATTR_MAX:
1523 default:
1524 format_generic_odp_key(a, ds);
1525 if (!is_exact) {
1526 ds_put_char(ds, '/');
1527 format_generic_odp_key(ma, ds);
1528 }
1529 break;
1530 }
1531 ds_put_char(ds, ')');
1532 }
1533
1534 static struct nlattr *
1535 generate_all_wildcard_mask(struct ofpbuf *ofp, const struct nlattr *key)
1536 {
1537 const struct nlattr *a;
1538 unsigned int left;
1539 int type = nl_attr_type(key);
1540 int size = nl_attr_get_size(key);
1541
1542 if (odp_flow_key_attr_len(type) >=0) {
1543 nl_msg_put_unspec_zero(ofp, type, size);
1544 } else {
1545 size_t nested_mask;
1546
1547 nested_mask = nl_msg_start_nested(ofp, type);
1548 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
1549 generate_all_wildcard_mask(ofp, nl_attr_get(a));
1550 }
1551 nl_msg_end_nested(ofp, nested_mask);
1552 }
1553
1554 return ofpbuf_base(ofp);
1555 }
1556
1557 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1558 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
1559 * 'mask_len' bytes of 'mask' which apply to 'key'. If 'portno_names' is
1560 * non-null and 'verbose' is true, translates odp port number to its name. */
1561 void
1562 odp_flow_format(const struct nlattr *key, size_t key_len,
1563 const struct nlattr *mask, size_t mask_len,
1564 const struct hmap *portno_names, struct ds *ds, bool verbose)
1565 {
1566 if (key_len) {
1567 const struct nlattr *a;
1568 unsigned int left;
1569 bool has_ethtype_key = false;
1570 const struct nlattr *ma = NULL;
1571 struct ofpbuf ofp;
1572 bool first_field = true;
1573
1574 ofpbuf_init(&ofp, 100);
1575 NL_ATTR_FOR_EACH (a, left, key, key_len) {
1576 bool is_nested_attr;
1577 bool is_wildcard = false;
1578 int attr_type = nl_attr_type(a);
1579
1580 if (attr_type == OVS_KEY_ATTR_ETHERTYPE) {
1581 has_ethtype_key = true;
1582 }
1583
1584 is_nested_attr = (odp_flow_key_attr_len(attr_type) == -2);
1585
1586 if (mask && mask_len) {
1587 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
1588 is_wildcard = ma ? odp_mask_attr_is_wildcard(ma) : true;
1589 }
1590
1591 if (verbose || !is_wildcard || is_nested_attr) {
1592 if (is_wildcard && !ma) {
1593 ma = generate_all_wildcard_mask(&ofp, a);
1594 }
1595 if (!first_field) {
1596 ds_put_char(ds, ',');
1597 }
1598 format_odp_key_attr(a, ma, portno_names, ds, verbose);
1599 first_field = false;
1600 }
1601 ofpbuf_clear(&ofp);
1602 }
1603 ofpbuf_uninit(&ofp);
1604
1605 if (left) {
1606 int i;
1607
1608 if (left == key_len) {
1609 ds_put_cstr(ds, "<empty>");
1610 }
1611 ds_put_format(ds, ",***%u leftover bytes*** (", left);
1612 for (i = 0; i < left; i++) {
1613 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
1614 }
1615 ds_put_char(ds, ')');
1616 }
1617 if (!has_ethtype_key) {
1618 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
1619 if (ma) {
1620 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
1621 ntohs(nl_attr_get_be16(ma)));
1622 }
1623 }
1624 } else {
1625 ds_put_cstr(ds, "<empty>");
1626 }
1627 }
1628
1629 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1630 * OVS_KEY_ATTR_* attributes in 'key'. */
1631 void
1632 odp_flow_key_format(const struct nlattr *key,
1633 size_t key_len, struct ds *ds)
1634 {
1635 odp_flow_format(key, key_len, NULL, 0, NULL, ds, true);
1636 }
1637
1638 static void
1639 put_nd(struct ovs_key_nd* nd_key, const uint8_t *nd_sll,
1640 const uint8_t *nd_tll, struct ofpbuf *key)
1641 {
1642 if (nd_sll) {
1643 memcpy(nd_key->nd_sll, nd_sll, ETH_ADDR_LEN);
1644 }
1645
1646 if (nd_tll) {
1647 memcpy(nd_key->nd_tll, nd_tll, ETH_ADDR_LEN);
1648 }
1649
1650 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, nd_key, sizeof *nd_key);
1651 }
1652
1653 static int
1654 put_nd_key(int n, const char *nd_target_s, const uint8_t *nd_sll,
1655 const uint8_t *nd_tll, struct ofpbuf *key)
1656 {
1657 struct ovs_key_nd nd_key;
1658
1659 memset(&nd_key, 0, sizeof nd_key);
1660
1661 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
1662 return -EINVAL;
1663 }
1664
1665 put_nd(&nd_key, nd_sll, nd_tll, key);
1666 return n;
1667 }
1668
1669 static int
1670 put_nd_mask(int n, const char *nd_target_s,
1671 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *mask)
1672 {
1673 struct ovs_key_nd nd_mask;
1674
1675 memset(&nd_mask, 0xff, sizeof nd_mask);
1676
1677 if (strlen(nd_target_s) != 0 &&
1678 inet_pton(AF_INET6, nd_target_s, nd_mask.nd_target) != 1) {
1679 return -EINVAL;
1680 }
1681
1682 put_nd(&nd_mask, nd_sll, nd_tll, mask);
1683 return n;
1684 }
1685
1686 static bool
1687 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1688 {
1689 if (!strcasecmp(s, "no")) {
1690 *type = OVS_FRAG_TYPE_NONE;
1691 } else if (!strcasecmp(s, "first")) {
1692 *type = OVS_FRAG_TYPE_FIRST;
1693 } else if (!strcasecmp(s, "later")) {
1694 *type = OVS_FRAG_TYPE_LATER;
1695 } else {
1696 return false;
1697 }
1698 return true;
1699 }
1700
1701 static ovs_be32
1702 mpls_lse_from_components(int mpls_label, int mpls_tc, int mpls_ttl, int mpls_bos)
1703 {
1704 return (htonl((mpls_label << MPLS_LABEL_SHIFT) |
1705 (mpls_tc << MPLS_TC_SHIFT) |
1706 (mpls_ttl << MPLS_TTL_SHIFT) |
1707 (mpls_bos << MPLS_BOS_SHIFT)));
1708 }
1709
1710 static int
1711 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
1712 struct ofpbuf *key, struct ofpbuf *mask)
1713 {
1714 {
1715 uint32_t priority;
1716 uint32_t priority_mask;
1717 int n = -1;
1718
1719 if (mask && ovs_scan(s, "skb_priority(%"SCNi32"/%"SCNi32")%n",
1720 &priority, &priority_mask, &n)) {
1721 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1722 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, priority_mask);
1723 return n;
1724 } else if (ovs_scan(s, "skb_priority(%"SCNi32")%n", &priority, &n)) {
1725 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1726 if (mask) {
1727 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, UINT32_MAX);
1728 }
1729 return n;
1730 }
1731 }
1732
1733 {
1734 uint32_t mark;
1735 uint32_t mark_mask;
1736 int n = -1;
1737
1738 if (mask && ovs_scan(s, "skb_mark(%"SCNi32"/%"SCNi32")%n", &mark,
1739 &mark_mask, &n)) {
1740 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1741 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, mark_mask);
1742 return n;
1743 } else if (ovs_scan(s, "skb_mark(%"SCNi32")%n", &mark, &n)) {
1744 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1745 if (mask) {
1746 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, UINT32_MAX);
1747 }
1748 return n;
1749 }
1750 }
1751
1752 {
1753 uint32_t recirc_id;
1754 int n = -1;
1755
1756 if (ovs_scan(s, "recirc_id(%"SCNi32")%n", &recirc_id, &n)) {
1757 nl_msg_put_u32(key, OVS_KEY_ATTR_RECIRC_ID, recirc_id);
1758 nl_msg_put_u32(mask, OVS_KEY_ATTR_RECIRC_ID, UINT32_MAX);
1759 return n;
1760 }
1761 }
1762
1763 {
1764 uint32_t dp_hash;
1765 uint32_t dp_hash_mask;
1766 int n = -1;
1767
1768 if (mask && ovs_scan(s, "dp_hash(%"SCNi32"/%"SCNi32")%n", &dp_hash,
1769 &dp_hash_mask, &n)) {
1770 nl_msg_put_u32(key, OVS_KEY_ATTR_DP_HASH, dp_hash);
1771 nl_msg_put_u32(mask, OVS_KEY_ATTR_DP_HASH, dp_hash_mask);
1772 return n;
1773 } else if (ovs_scan(s, "dp_hash(%"SCNi32")%n", &dp_hash, &n)) {
1774 nl_msg_put_u32(key, OVS_KEY_ATTR_DP_HASH, dp_hash);
1775 if (mask) {
1776 nl_msg_put_u32(mask, OVS_KEY_ATTR_DP_HASH, UINT32_MAX);
1777 }
1778 return n;
1779 }
1780 }
1781
1782 {
1783 uint64_t tun_id, tun_id_mask;
1784 struct flow_tnl tun_key, tun_key_mask;
1785 int n = -1;
1786
1787 if (mask && ovs_scan(s, "tunnel(tun_id=%"SCNi64"/%"SCNi64","
1788 "src="IP_SCAN_FMT"/"IP_SCAN_FMT",dst="IP_SCAN_FMT
1789 "/"IP_SCAN_FMT",tos=%"SCNi8"/%"SCNi8","
1790 "ttl=%"SCNi8"/%"SCNi8",flags%n",
1791 &tun_id, &tun_id_mask,
1792 IP_SCAN_ARGS(&tun_key.ip_src),
1793 IP_SCAN_ARGS(&tun_key_mask.ip_src),
1794 IP_SCAN_ARGS(&tun_key.ip_dst),
1795 IP_SCAN_ARGS(&tun_key_mask.ip_dst),
1796 &tun_key.ip_tos, &tun_key_mask.ip_tos,
1797 &tun_key.ip_ttl, &tun_key_mask.ip_ttl, &n)) {
1798 int res;
1799 uint32_t flags;
1800
1801 tun_key.tun_id = htonll(tun_id);
1802 tun_key_mask.tun_id = htonll(tun_id_mask);
1803 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1804 tun_key.flags = flags;
1805 tun_key_mask.flags = UINT16_MAX;
1806
1807 if (res < 0) {
1808 return res;
1809 }
1810 n += res;
1811 if (s[n] != ')') {
1812 return -EINVAL;
1813 }
1814 n++;
1815 tun_key_to_attr(key, &tun_key);
1816 if (mask) {
1817 tun_key_to_attr(mask, &tun_key_mask);
1818 }
1819 return n;
1820 } else if (ovs_scan(s, "tunnel(tun_id=%"SCNi64","
1821 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1822 ",tos=%"SCNi8",ttl=%"SCNi8",flags%n", &tun_id,
1823 IP_SCAN_ARGS(&tun_key.ip_src),
1824 IP_SCAN_ARGS(&tun_key.ip_dst),
1825 &tun_key.ip_tos, &tun_key.ip_ttl, &n)) {
1826 int res;
1827 uint32_t flags;
1828
1829 tun_key.tun_id = htonll(tun_id);
1830 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1831 tun_key.flags = flags;
1832
1833 if (res < 0) {
1834 return res;
1835 }
1836 n += res;
1837 if (s[n] != ')') {
1838 return -EINVAL;
1839 }
1840 n++;
1841 tun_key_to_attr(key, &tun_key);
1842
1843 if (mask) {
1844 memset(&tun_key, 0xff, sizeof tun_key);
1845 tun_key_to_attr(mask, &tun_key);
1846 }
1847 return n;
1848 }
1849 }
1850
1851 {
1852 uint32_t in_port;
1853 uint32_t in_port_mask;
1854 int n = -1;
1855
1856 if (mask && ovs_scan(s, "in_port(%"SCNi32"/%"SCNi32")%n",
1857 &in_port, &in_port_mask, &n)) {
1858 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1859 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, in_port_mask);
1860 return n;
1861 } else if (ovs_scan(s, "in_port(%"SCNi32")%n", &in_port, &n)) {
1862 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1863 if (mask) {
1864 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1865 }
1866 return n;
1867 }
1868 }
1869
1870
1871 if (port_names && !strncmp(s, "in_port(", 8)) {
1872 const char *name;
1873 const struct simap_node *node;
1874 int name_len;
1875
1876 name = s + 8;
1877 name_len = strcspn(name, ")");
1878 node = simap_find_len(port_names, name, name_len);
1879 if (node) {
1880 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1881
1882 if (mask) {
1883 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1884 }
1885 return 8 + name_len + 1;
1886 }
1887 }
1888
1889 {
1890 struct ovs_key_ethernet eth_key;
1891 struct ovs_key_ethernet eth_key_mask;
1892 int n = -1;
1893
1894 if (mask && ovs_scan(s,
1895 "eth(src="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
1896 "dst="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
1897 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1898 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_src),
1899 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst),
1900 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_dst), &n)) {
1901 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1902 &eth_key, sizeof eth_key);
1903 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1904 &eth_key_mask, sizeof eth_key_mask);
1905 return n;
1906 } else if (ovs_scan(s, "eth(src="ETH_ADDR_SCAN_FMT","
1907 "dst="ETH_ADDR_SCAN_FMT")%n",
1908 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1909 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n)) {
1910 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1911 &eth_key, sizeof eth_key);
1912
1913 if (mask) {
1914 memset(&eth_key, 0xff, sizeof eth_key);
1915 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1916 &eth_key, sizeof eth_key);
1917 }
1918 return n;
1919 }
1920 }
1921
1922 {
1923 int vid, vid_mask;
1924 int pcp, pcp_mask;
1925 int cfi, cfi_mask;
1926 int n = -1;
1927
1928 if (mask && ovs_scan(s, "vlan(vid=%i/%i,pcp=%i/%i)%n",
1929 &vid, &vid_mask, &pcp, &pcp_mask, &n)) {
1930 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1931 htons((vid << VLAN_VID_SHIFT) |
1932 (pcp << VLAN_PCP_SHIFT) |
1933 VLAN_CFI));
1934 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1935 htons((vid_mask << VLAN_VID_SHIFT) |
1936 (pcp_mask << VLAN_PCP_SHIFT) |
1937 (1 << VLAN_CFI_SHIFT)));
1938 return n;
1939 } else if (ovs_scan(s, "vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)) {
1940 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1941 htons((vid << VLAN_VID_SHIFT) |
1942 (pcp << VLAN_PCP_SHIFT) |
1943 VLAN_CFI));
1944 if (mask) {
1945 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1946 }
1947 return n;
1948 } else if (mask
1949 && ovs_scan(s, "vlan(vid=%i/%i,pcp=%i/%i,cfi=%i/%i)%n",
1950 &vid, &vid_mask, &pcp, &pcp_mask,
1951 &cfi, &cfi_mask, &n)) {
1952 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1953 htons((vid << VLAN_VID_SHIFT) |
1954 (pcp << VLAN_PCP_SHIFT) |
1955 (cfi ? VLAN_CFI : 0)));
1956 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1957 htons((vid_mask << VLAN_VID_SHIFT) |
1958 (pcp_mask << VLAN_PCP_SHIFT) |
1959 (cfi_mask << VLAN_CFI_SHIFT)));
1960 return n;
1961 } else if (ovs_scan(s, "vlan(vid=%i,pcp=%i,cfi=%i)%n",
1962 &vid, &pcp, &cfi, &n)) {
1963 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1964 htons((vid << VLAN_VID_SHIFT) |
1965 (pcp << VLAN_PCP_SHIFT) |
1966 (cfi ? VLAN_CFI : 0)));
1967 if (mask) {
1968 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1969 }
1970 return n;
1971 }
1972 }
1973
1974 {
1975 int eth_type;
1976 int eth_type_mask;
1977 int n = -1;
1978
1979 if (mask && ovs_scan(s, "eth_type(%i/%i)%n",
1980 &eth_type, &eth_type_mask, &n)) {
1981 if (eth_type != 0) {
1982 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1983 }
1984 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type_mask));
1985 return n;
1986 } else if (ovs_scan(s, "eth_type(%i)%n", &eth_type, &n)) {
1987 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1988 if (mask) {
1989 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
1990 }
1991 return n;
1992 }
1993 }
1994
1995 {
1996 int label, tc, ttl, bos;
1997 int label_mask, tc_mask, ttl_mask, bos_mask;
1998 int n = -1;
1999
2000 if (mask && ovs_scan(s, "mpls(label=%i/%i,tc=%i/%i,"
2001 "ttl=%i/%i,bos=%i/%i)%n",
2002 &label, &label_mask, &tc, &tc_mask,
2003 &ttl, &ttl_mask, &bos, &bos_mask, &n)) {
2004 struct ovs_key_mpls *mpls, *mpls_mask;
2005
2006 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
2007 sizeof *mpls);
2008 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
2009
2010 mpls_mask = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
2011 sizeof *mpls_mask);
2012 mpls_mask->mpls_lse = mpls_lse_from_components(
2013 label_mask, tc_mask, ttl_mask, bos_mask);
2014 return n;
2015 } else if (ovs_scan(s, "mpls(label=%i,tc=%i,ttl=%i,bos=%i)%n",
2016 &label, &tc, &ttl, &bos, &n)) {
2017 struct ovs_key_mpls *mpls;
2018
2019 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
2020 sizeof *mpls);
2021 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
2022 if (mask) {
2023 mpls = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
2024 sizeof *mpls);
2025 mpls->mpls_lse = OVS_BE32_MAX;
2026 }
2027 return n;
2028 }
2029 }
2030
2031
2032 {
2033 struct ovs_key_ipv4 ipv4_key;
2034 struct ovs_key_ipv4 ipv4_mask;
2035
2036 char frag[8];
2037 enum ovs_frag_type ipv4_frag;
2038 int n = -1;
2039
2040 if (mask
2041 && ovs_scan(s, "ipv4(src="IP_SCAN_FMT"/"IP_SCAN_FMT","
2042 "dst="IP_SCAN_FMT"/"IP_SCAN_FMT","
2043 "proto=%"SCNi8"/%"SCNi8","
2044 "tos=%"SCNi8"/%"SCNi8","
2045 "ttl=%"SCNi8"/%"SCNi8","
2046 "frag=%7[a-z]/%"SCNi8")%n",
2047 IP_SCAN_ARGS(&ipv4_key.ipv4_src),
2048 IP_SCAN_ARGS(&ipv4_mask.ipv4_src),
2049 IP_SCAN_ARGS(&ipv4_key.ipv4_dst),
2050 IP_SCAN_ARGS(&ipv4_mask.ipv4_dst),
2051 &ipv4_key.ipv4_proto, &ipv4_mask.ipv4_proto,
2052 &ipv4_key.ipv4_tos, &ipv4_mask.ipv4_tos,
2053 &ipv4_key.ipv4_ttl, &ipv4_mask.ipv4_ttl,
2054 frag, &ipv4_mask.ipv4_frag, &n)
2055 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
2056 ipv4_key.ipv4_frag = ipv4_frag;
2057 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
2058 &ipv4_key, sizeof ipv4_key);
2059
2060 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
2061 &ipv4_mask, sizeof ipv4_mask);
2062 return n;
2063 } else if (ovs_scan(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
2064 "proto=%"SCNi8",tos=%"SCNi8",ttl=%"SCNi8","
2065 "frag=%7[a-z])%n",
2066 IP_SCAN_ARGS(&ipv4_key.ipv4_src),
2067 IP_SCAN_ARGS(&ipv4_key.ipv4_dst),
2068 &ipv4_key.ipv4_proto,
2069 &ipv4_key.ipv4_tos,
2070 &ipv4_key.ipv4_ttl,
2071 frag, &n) > 0
2072 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
2073 ipv4_key.ipv4_frag = ipv4_frag;
2074 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
2075 &ipv4_key, sizeof ipv4_key);
2076
2077 if (mask) {
2078 memset(&ipv4_key, 0xff, sizeof ipv4_key);
2079 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
2080 &ipv4_key, sizeof ipv4_key);
2081 }
2082 return n;
2083 }
2084 }
2085
2086 {
2087 char ipv6_src_s[IPV6_SCAN_LEN + 1];
2088 char ipv6_src_mask_s[IPV6_SCAN_LEN + 1];
2089 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
2090 char ipv6_dst_mask_s[IPV6_SCAN_LEN + 1];
2091 int ipv6_label, ipv6_label_mask;
2092 int ipv6_proto, ipv6_proto_mask;
2093 int ipv6_tclass, ipv6_tclass_mask;
2094 int ipv6_hlimit, ipv6_hlimit_mask;
2095 char frag[8];
2096 enum ovs_frag_type ipv6_frag;
2097 int ipv6_frag_mask;
2098 int n = -1;
2099
2100 if (mask && ovs_scan(s, "ipv6(src="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT",dst="
2101 IPV6_SCAN_FMT"/"IPV6_SCAN_FMT","
2102 "label=%i/%i,proto=%i/%i,tclass=%i/%i,"
2103 "hlimit=%i/%i,frag=%7[a-z]/%i)%n",
2104 ipv6_src_s, ipv6_src_mask_s,
2105 ipv6_dst_s, ipv6_dst_mask_s,
2106 &ipv6_label, &ipv6_label_mask, &ipv6_proto,
2107 &ipv6_proto_mask, &ipv6_tclass, &ipv6_tclass_mask,
2108 &ipv6_hlimit, &ipv6_hlimit_mask, frag,
2109 &ipv6_frag_mask, &n)
2110 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
2111 struct ovs_key_ipv6 ipv6_key;
2112 struct ovs_key_ipv6 ipv6_mask;
2113
2114 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
2115 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1 ||
2116 inet_pton(AF_INET6, ipv6_src_mask_s, &ipv6_mask.ipv6_src) != 1 ||
2117 inet_pton(AF_INET6, ipv6_dst_mask_s, &ipv6_mask.ipv6_dst) != 1) {
2118 return -EINVAL;
2119 }
2120
2121 ipv6_key.ipv6_label = htonl(ipv6_label);
2122 ipv6_key.ipv6_proto = ipv6_proto;
2123 ipv6_key.ipv6_tclass = ipv6_tclass;
2124 ipv6_key.ipv6_hlimit = ipv6_hlimit;
2125 ipv6_key.ipv6_frag = ipv6_frag;
2126 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
2127 &ipv6_key, sizeof ipv6_key);
2128
2129 ipv6_mask.ipv6_label = htonl(ipv6_label_mask);
2130 ipv6_mask.ipv6_proto = ipv6_proto_mask;
2131 ipv6_mask.ipv6_tclass = ipv6_tclass_mask;
2132 ipv6_mask.ipv6_hlimit = ipv6_hlimit_mask;
2133 ipv6_mask.ipv6_frag = ipv6_frag_mask;
2134 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
2135 &ipv6_mask, sizeof ipv6_mask);
2136 return n;
2137 } else if (ovs_scan(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
2138 "label=%i,proto=%i,tclass=%i,hlimit=%i,"
2139 "frag=%7[a-z])%n",
2140 ipv6_src_s, ipv6_dst_s, &ipv6_label,
2141 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n)
2142 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
2143 struct ovs_key_ipv6 ipv6_key;
2144
2145 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
2146 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
2147 return -EINVAL;
2148 }
2149 ipv6_key.ipv6_label = htonl(ipv6_label);
2150 ipv6_key.ipv6_proto = ipv6_proto;
2151 ipv6_key.ipv6_tclass = ipv6_tclass;
2152 ipv6_key.ipv6_hlimit = ipv6_hlimit;
2153 ipv6_key.ipv6_frag = ipv6_frag;
2154 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
2155 &ipv6_key, sizeof ipv6_key);
2156
2157 if (mask) {
2158 memset(&ipv6_key, 0xff, sizeof ipv6_key);
2159 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
2160 &ipv6_key, sizeof ipv6_key);
2161 }
2162 return n;
2163 }
2164 }
2165
2166 {
2167 int tcp_src;
2168 int tcp_dst;
2169 int tcp_src_mask;
2170 int tcp_dst_mask;
2171 int n = -1;
2172
2173 if (mask && ovs_scan(s, "tcp(src=%i/%i,dst=%i/%i)%n",
2174 &tcp_src, &tcp_src_mask, &tcp_dst,
2175 &tcp_dst_mask, &n)) {
2176 struct ovs_key_tcp tcp_key;
2177 struct ovs_key_tcp tcp_mask;
2178
2179 tcp_key.tcp_src = htons(tcp_src);
2180 tcp_key.tcp_dst = htons(tcp_dst);
2181 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2182
2183 tcp_mask.tcp_src = htons(tcp_src_mask);
2184 tcp_mask.tcp_dst = htons(tcp_dst_mask);
2185 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2186 &tcp_mask, sizeof tcp_mask);
2187 return n;
2188 } else if (ovs_scan(s, "tcp(src=%i,dst=%i)%n",
2189 &tcp_src, &tcp_dst, &n)) {
2190 struct ovs_key_tcp tcp_key;
2191
2192 tcp_key.tcp_src = htons(tcp_src);
2193 tcp_key.tcp_dst = htons(tcp_dst);
2194 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2195
2196 if (mask) {
2197 memset(&tcp_key, 0xff, sizeof tcp_key);
2198 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2199 &tcp_key, sizeof tcp_key);
2200 }
2201 return n;
2202 }
2203 }
2204
2205 {
2206 uint16_t tcp_flags, tcp_flags_mask;
2207 int n = -1;
2208
2209 if (mask && ovs_scan(s, "tcp_flags(%"SCNi16"/%"SCNi16")%n",
2210 &tcp_flags, &tcp_flags_mask, &n) > 0 && n > 0) {
2211 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2212 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags_mask));
2213 return n;
2214 } else if (ovs_scan(s, "tcp_flags(%"SCNi16")%n", &tcp_flags, &n)) {
2215 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2216 if (mask) {
2217 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS,
2218 htons(UINT16_MAX));
2219 }
2220 return n;
2221 }
2222 }
2223
2224 {
2225 int udp_src;
2226 int udp_dst;
2227 int udp_src_mask;
2228 int udp_dst_mask;
2229 int n = -1;
2230
2231 if (mask && ovs_scan(s, "udp(src=%i/%i,dst=%i/%i)%n",
2232 &udp_src, &udp_src_mask,
2233 &udp_dst, &udp_dst_mask, &n)) {
2234 struct ovs_key_udp udp_key;
2235 struct ovs_key_udp udp_mask;
2236
2237 udp_key.udp_src = htons(udp_src);
2238 udp_key.udp_dst = htons(udp_dst);
2239 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2240
2241 udp_mask.udp_src = htons(udp_src_mask);
2242 udp_mask.udp_dst = htons(udp_dst_mask);
2243 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP,
2244 &udp_mask, sizeof udp_mask);
2245 return n;
2246 }
2247 if (ovs_scan(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n)) {
2248 struct ovs_key_udp udp_key;
2249
2250 udp_key.udp_src = htons(udp_src);
2251 udp_key.udp_dst = htons(udp_dst);
2252 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2253
2254 if (mask) {
2255 memset(&udp_key, 0xff, sizeof udp_key);
2256 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2257 }
2258 return n;
2259 }
2260 }
2261
2262 {
2263 int sctp_src;
2264 int sctp_dst;
2265 int sctp_src_mask;
2266 int sctp_dst_mask;
2267 int n = -1;
2268
2269 if (mask && ovs_scan(s, "sctp(src=%i/%i,dst=%i/%i)%n",
2270 &sctp_src, &sctp_src_mask,
2271 &sctp_dst, &sctp_dst_mask, &n)) {
2272 struct ovs_key_sctp sctp_key;
2273 struct ovs_key_sctp sctp_mask;
2274
2275 sctp_key.sctp_src = htons(sctp_src);
2276 sctp_key.sctp_dst = htons(sctp_dst);
2277 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2278
2279 sctp_mask.sctp_src = htons(sctp_src_mask);
2280 sctp_mask.sctp_dst = htons(sctp_dst_mask);
2281 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP,
2282 &sctp_mask, sizeof sctp_mask);
2283 return n;
2284 }
2285 if (ovs_scan(s, "sctp(src=%i,dst=%i)%n", &sctp_src, &sctp_dst, &n)) {
2286 struct ovs_key_sctp sctp_key;
2287
2288 sctp_key.sctp_src = htons(sctp_src);
2289 sctp_key.sctp_dst = htons(sctp_dst);
2290 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2291
2292 if (mask) {
2293 memset(&sctp_key, 0xff, sizeof sctp_key);
2294 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2295 }
2296 return n;
2297 }
2298 }
2299
2300 {
2301 struct ovs_key_icmp icmp_key;
2302 struct ovs_key_icmp icmp_mask;
2303 int n = -1;
2304
2305 if (mask && ovs_scan(s, "icmp(type=%"SCNi8"/%"SCNi8","
2306 "code=%"SCNi8"/%"SCNi8")%n",
2307 &icmp_key.icmp_type, &icmp_mask.icmp_type,
2308 &icmp_key.icmp_code, &icmp_mask.icmp_code, &n)) {
2309 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2310 &icmp_key, sizeof icmp_key);
2311 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP,
2312 &icmp_mask, sizeof icmp_mask);
2313 return n;
2314 } else if (ovs_scan(s, "icmp(type=%"SCNi8",code=%"SCNi8")%n",
2315 &icmp_key.icmp_type, &icmp_key.icmp_code, &n)) {
2316 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2317 &icmp_key, sizeof icmp_key);
2318 if (mask) {
2319 memset(&icmp_key, 0xff, sizeof icmp_key);
2320 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP, &icmp_key,
2321 sizeof icmp_key);
2322 }
2323 return n;
2324 }
2325 }
2326
2327 {
2328 struct ovs_key_icmpv6 icmpv6_key;
2329 struct ovs_key_icmpv6 icmpv6_mask;
2330 int n = -1;
2331
2332 if (mask && ovs_scan(s, "icmpv6(type=%"SCNi8"/%"SCNi8","
2333 "code=%"SCNi8"/%"SCNi8")%n",
2334 &icmpv6_key.icmpv6_type, &icmpv6_mask.icmpv6_type,
2335 &icmpv6_key.icmpv6_code, &icmpv6_mask.icmpv6_code,
2336 &n)) {
2337 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2338 &icmpv6_key, sizeof icmpv6_key);
2339 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_mask,
2340 sizeof icmpv6_mask);
2341 return n;
2342 } else if (ovs_scan(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
2343 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,
2344 &n)) {
2345 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2346 &icmpv6_key, sizeof icmpv6_key);
2347
2348 if (mask) {
2349 memset(&icmpv6_key, 0xff, sizeof icmpv6_key);
2350 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_key,
2351 sizeof icmpv6_key);
2352 }
2353 return n;
2354 }
2355 }
2356
2357 {
2358 struct ovs_key_arp arp_key;
2359 struct ovs_key_arp arp_mask;
2360 uint16_t arp_op, arp_op_mask;
2361 int n = -1;
2362
2363 if (mask && ovs_scan(s, "arp(sip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2364 "tip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2365 "op=%"SCNi16"/%"SCNi16","
2366 "sha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2367 "tha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2368 IP_SCAN_ARGS(&arp_key.arp_sip),
2369 IP_SCAN_ARGS(&arp_mask.arp_sip),
2370 IP_SCAN_ARGS(&arp_key.arp_tip),
2371 IP_SCAN_ARGS(&arp_mask.arp_tip),
2372 &arp_op, &arp_op_mask,
2373 ETH_ADDR_SCAN_ARGS(arp_key.arp_sha),
2374 ETH_ADDR_SCAN_ARGS(arp_mask.arp_sha),
2375 ETH_ADDR_SCAN_ARGS(arp_key.arp_tha),
2376 ETH_ADDR_SCAN_ARGS(arp_mask.arp_tha), &n)) {
2377 arp_key.arp_op = htons(arp_op);
2378 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2379 arp_mask.arp_op = htons(arp_op_mask);
2380 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2381 &arp_mask, sizeof arp_mask);
2382 return n;
2383 } else if (ovs_scan(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
2384 "op=%"SCNi16",sha="ETH_ADDR_SCAN_FMT","
2385 "tha="ETH_ADDR_SCAN_FMT")%n",
2386 IP_SCAN_ARGS(&arp_key.arp_sip),
2387 IP_SCAN_ARGS(&arp_key.arp_tip),
2388 &arp_op,
2389 ETH_ADDR_SCAN_ARGS(arp_key.arp_sha),
2390 ETH_ADDR_SCAN_ARGS(arp_key.arp_tha), &n)) {
2391 arp_key.arp_op = htons(arp_op);
2392 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2393
2394 if (mask) {
2395 memset(&arp_key, 0xff, sizeof arp_key);
2396 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2397 &arp_key, sizeof arp_key);
2398 }
2399 return n;
2400 }
2401 }
2402
2403 {
2404 char nd_target_s[IPV6_SCAN_LEN + 1];
2405 char nd_target_mask_s[IPV6_SCAN_LEN + 1];
2406 uint8_t nd_sll[ETH_ADDR_LEN];
2407 uint8_t nd_sll_mask[ETH_ADDR_LEN];
2408 uint8_t nd_tll[ETH_ADDR_LEN];
2409 uint8_t nd_tll_mask[ETH_ADDR_LEN];
2410 int n = -1;
2411
2412 nd_target_mask_s[0] = 0;
2413 memset(nd_sll_mask, 0xff, sizeof nd_sll_mask);
2414 memset(nd_tll_mask, 0xff, sizeof nd_tll_mask);
2415
2416 if (mask && ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT")%n",
2417 nd_target_s, nd_target_mask_s, &n)) {
2418 put_nd_key(n, nd_target_s, NULL, NULL, key);
2419 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2420 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT")%n",
2421 nd_target_s, &n)) {
2422 put_nd_key(n, nd_target_s, NULL, NULL, key);
2423 if (mask) {
2424 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2425 }
2426 } else if (mask &&
2427 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2428 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2429 nd_target_s, nd_target_mask_s,
2430 ETH_ADDR_SCAN_ARGS(nd_sll),
2431 ETH_ADDR_SCAN_ARGS(nd_sll_mask), &n)) {
2432 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2433 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2434 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2435 "sll="ETH_ADDR_SCAN_FMT")%n",
2436 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n)) {
2437 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2438 if (mask) {
2439 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2440 }
2441 } else if (mask &&
2442 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2443 ",tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2444 nd_target_s, nd_target_mask_s,
2445 ETH_ADDR_SCAN_ARGS(nd_tll),
2446 ETH_ADDR_SCAN_ARGS(nd_tll_mask), &n)) {
2447 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2448 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2449 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2450 "tll="ETH_ADDR_SCAN_FMT")%n",
2451 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n)) {
2452 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2453 if (mask) {
2454 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2455 }
2456 } else if (mask &&
2457 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2458 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2459 "tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2460 nd_target_s, nd_target_mask_s,
2461 ETH_ADDR_SCAN_ARGS(nd_sll),
2462 ETH_ADDR_SCAN_ARGS(nd_sll_mask),
2463 ETH_ADDR_SCAN_ARGS(nd_tll),
2464 ETH_ADDR_SCAN_ARGS(nd_tll_mask),
2465 &n)) {
2466 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2467 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2468 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2469 "sll="ETH_ADDR_SCAN_FMT","
2470 "tll="ETH_ADDR_SCAN_FMT")%n",
2471 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
2472 ETH_ADDR_SCAN_ARGS(nd_tll), &n)) {
2473 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2474 if (mask) {
2475 put_nd_mask(n, nd_target_mask_s,
2476 nd_sll_mask, nd_tll_mask, mask);
2477 }
2478 }
2479
2480 if (n != -1)
2481 return n;
2482
2483 }
2484
2485 if (!strncmp(s, "encap(", 6)) {
2486 const char *start = s;
2487 size_t encap, encap_mask = 0;
2488
2489 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
2490 if (mask) {
2491 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
2492 }
2493
2494 s += 6;
2495 for (;;) {
2496 int retval;
2497
2498 s += strspn(s, ", \t\r\n");
2499 if (!*s) {
2500 return -EINVAL;
2501 } else if (*s == ')') {
2502 break;
2503 }
2504
2505 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2506 if (retval < 0) {
2507 return retval;
2508 }
2509 s += retval;
2510 }
2511 s++;
2512
2513 nl_msg_end_nested(key, encap);
2514 if (mask) {
2515 nl_msg_end_nested(mask, encap_mask);
2516 }
2517
2518 return s - start;
2519 }
2520
2521 return -EINVAL;
2522 }
2523
2524 /* Parses the string representation of a datapath flow key, in the
2525 * format output by odp_flow_key_format(). Returns 0 if successful,
2526 * otherwise a positive errno value. On success, the flow key is
2527 * appended to 'key' as a series of Netlink attributes. On failure, no
2528 * data is appended to 'key'. Either way, 'key''s data might be
2529 * reallocated.
2530 *
2531 * If 'port_names' is nonnull, it points to an simap that maps from a port name
2532 * to a port number. (Port names may be used instead of port numbers in
2533 * in_port.)
2534 *
2535 * On success, the attributes appended to 'key' are individually syntactically
2536 * valid, but they may not be valid as a sequence. 'key' might, for example,
2537 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
2538 int
2539 odp_flow_from_string(const char *s, const struct simap *port_names,
2540 struct ofpbuf *key, struct ofpbuf *mask)
2541 {
2542 const size_t old_size = ofpbuf_size(key);
2543 for (;;) {
2544 int retval;
2545
2546 s += strspn(s, delimiters);
2547 if (!*s) {
2548 return 0;
2549 }
2550
2551 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2552 if (retval < 0) {
2553 ofpbuf_set_size(key, old_size);
2554 return -retval;
2555 }
2556 s += retval;
2557 }
2558
2559 return 0;
2560 }
2561
2562 static uint8_t
2563 ovs_to_odp_frag(uint8_t nw_frag)
2564 {
2565 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
2566 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
2567 : OVS_FRAG_TYPE_LATER);
2568 }
2569
2570 static uint8_t
2571 ovs_to_odp_frag_mask(uint8_t nw_frag_mask)
2572 {
2573 uint8_t frag_mask = ~(OVS_FRAG_TYPE_FIRST | OVS_FRAG_TYPE_LATER);
2574
2575 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_ANY) ? OVS_FRAG_TYPE_FIRST : 0;
2576 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_LATER) ? OVS_FRAG_TYPE_LATER : 0;
2577
2578 return frag_mask;
2579 }
2580
2581 static void
2582 odp_flow_key_from_flow__(struct ofpbuf *buf, const struct flow *flow,
2583 const struct flow *mask, odp_port_t odp_in_port,
2584 size_t max_mpls_depth, bool recirc, bool export_mask)
2585 {
2586 struct ovs_key_ethernet *eth_key;
2587 size_t encap;
2588 const struct flow *data = export_mask ? mask : flow;
2589
2590 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
2591
2592 if (flow->tunnel.ip_dst || export_mask) {
2593 tun_key_to_attr(buf, &data->tunnel);
2594 }
2595
2596 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->pkt_mark);
2597
2598 if (recirc) {
2599 nl_msg_put_u32(buf, OVS_KEY_ATTR_RECIRC_ID, data->recirc_id);
2600 nl_msg_put_u32(buf, OVS_KEY_ATTR_DP_HASH, data->dp_hash);
2601 }
2602
2603 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
2604 * is not the magical value "ODPP_NONE". */
2605 if (export_mask || odp_in_port != ODPP_NONE) {
2606 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
2607 }
2608
2609 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
2610 sizeof *eth_key);
2611 memcpy(eth_key->eth_src, data->dl_src, ETH_ADDR_LEN);
2612 memcpy(eth_key->eth_dst, data->dl_dst, ETH_ADDR_LEN);
2613
2614 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
2615 if (export_mask) {
2616 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2617 } else {
2618 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
2619 }
2620 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
2621 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
2622 if (flow->vlan_tci == htons(0)) {
2623 goto unencap;
2624 }
2625 } else {
2626 encap = 0;
2627 }
2628
2629 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2630 /* For backwards compatibility with kernels that don't support
2631 * wildcarding, the following convention is used to encode the
2632 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
2633 *
2634 * key mask matches
2635 * -------- -------- -------
2636 * >0x5ff 0xffff Specified Ethernet II Ethertype.
2637 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
2638 * <none> 0xffff Any non-Ethernet II frame (except valid
2639 * 802.3 SNAP packet with valid eth_type).
2640 */
2641 if (export_mask) {
2642 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2643 }
2644 goto unencap;
2645 }
2646
2647 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2648
2649 if (flow->dl_type == htons(ETH_TYPE_IP)) {
2650 struct ovs_key_ipv4 *ipv4_key;
2651
2652 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
2653 sizeof *ipv4_key);
2654 ipv4_key->ipv4_src = data->nw_src;
2655 ipv4_key->ipv4_dst = data->nw_dst;
2656 ipv4_key->ipv4_proto = data->nw_proto;
2657 ipv4_key->ipv4_tos = data->nw_tos;
2658 ipv4_key->ipv4_ttl = data->nw_ttl;
2659 ipv4_key->ipv4_frag = export_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2660 : ovs_to_odp_frag(data->nw_frag);
2661 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2662 struct ovs_key_ipv6 *ipv6_key;
2663
2664 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
2665 sizeof *ipv6_key);
2666 memcpy(ipv6_key->ipv6_src, &data->ipv6_src, sizeof ipv6_key->ipv6_src);
2667 memcpy(ipv6_key->ipv6_dst, &data->ipv6_dst, sizeof ipv6_key->ipv6_dst);
2668 ipv6_key->ipv6_label = data->ipv6_label;
2669 ipv6_key->ipv6_proto = data->nw_proto;
2670 ipv6_key->ipv6_tclass = data->nw_tos;
2671 ipv6_key->ipv6_hlimit = data->nw_ttl;
2672 ipv6_key->ipv6_frag = export_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2673 : ovs_to_odp_frag(data->nw_frag);
2674 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2675 flow->dl_type == htons(ETH_TYPE_RARP)) {
2676 struct ovs_key_arp *arp_key;
2677
2678 arp_key = nl_msg_put_unspec_zero(buf, OVS_KEY_ATTR_ARP,
2679 sizeof *arp_key);
2680 arp_key->arp_sip = data->nw_src;
2681 arp_key->arp_tip = data->nw_dst;
2682 arp_key->arp_op = htons(data->nw_proto);
2683 memcpy(arp_key->arp_sha, data->arp_sha, ETH_ADDR_LEN);
2684 memcpy(arp_key->arp_tha, data->arp_tha, ETH_ADDR_LEN);
2685 } else if (eth_type_mpls(flow->dl_type)) {
2686 struct ovs_key_mpls *mpls_key;
2687 int i, n;
2688
2689 n = flow_count_mpls_labels(flow, NULL);
2690 n = MIN(n, max_mpls_depth);
2691 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
2692 n * sizeof *mpls_key);
2693 for (i = 0; i < n; i++) {
2694 mpls_key[i].mpls_lse = data->mpls_lse[i];
2695 }
2696 }
2697
2698 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2699 if (flow->nw_proto == IPPROTO_TCP) {
2700 struct ovs_key_tcp *tcp_key;
2701
2702 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
2703 sizeof *tcp_key);
2704 tcp_key->tcp_src = data->tp_src;
2705 tcp_key->tcp_dst = data->tp_dst;
2706
2707 if (data->tcp_flags) {
2708 nl_msg_put_be16(buf, OVS_KEY_ATTR_TCP_FLAGS, data->tcp_flags);
2709 }
2710 } else if (flow->nw_proto == IPPROTO_UDP) {
2711 struct ovs_key_udp *udp_key;
2712
2713 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
2714 sizeof *udp_key);
2715 udp_key->udp_src = data->tp_src;
2716 udp_key->udp_dst = data->tp_dst;
2717 } else if (flow->nw_proto == IPPROTO_SCTP) {
2718 struct ovs_key_sctp *sctp_key;
2719
2720 sctp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_SCTP,
2721 sizeof *sctp_key);
2722 sctp_key->sctp_src = data->tp_src;
2723 sctp_key->sctp_dst = data->tp_dst;
2724 } else if (flow->dl_type == htons(ETH_TYPE_IP)
2725 && flow->nw_proto == IPPROTO_ICMP) {
2726 struct ovs_key_icmp *icmp_key;
2727
2728 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
2729 sizeof *icmp_key);
2730 icmp_key->icmp_type = ntohs(data->tp_src);
2731 icmp_key->icmp_code = ntohs(data->tp_dst);
2732 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
2733 && flow->nw_proto == IPPROTO_ICMPV6) {
2734 struct ovs_key_icmpv6 *icmpv6_key;
2735
2736 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
2737 sizeof *icmpv6_key);
2738 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
2739 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
2740
2741 if (flow->tp_dst == htons(0)
2742 && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT)
2743 || flow->tp_src == htons(ND_NEIGHBOR_ADVERT))
2744 && (!export_mask || (data->tp_src == htons(0xffff)
2745 && data->tp_dst == htons(0xffff)))) {
2746
2747 struct ovs_key_nd *nd_key;
2748
2749 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
2750 sizeof *nd_key);
2751 memcpy(nd_key->nd_target, &data->nd_target,
2752 sizeof nd_key->nd_target);
2753 memcpy(nd_key->nd_sll, data->arp_sha, ETH_ADDR_LEN);
2754 memcpy(nd_key->nd_tll, data->arp_tha, ETH_ADDR_LEN);
2755 }
2756 }
2757 }
2758
2759 unencap:
2760 if (encap) {
2761 nl_msg_end_nested(buf, encap);
2762 }
2763 }
2764
2765 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
2766 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
2767 * number rather than a datapath port number). Instead, if 'odp_in_port'
2768 * is anything other than ODPP_NONE, it is included in 'buf' as the input
2769 * port.
2770 *
2771 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2772 * capable of being expanded to allow for that much space.
2773 *
2774 * 'recirc' indicates support for recirculation fields. If this is true, then
2775 * these fields will always be serialised. */
2776 void
2777 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
2778 const struct flow *mask, odp_port_t odp_in_port,
2779 bool recirc)
2780 {
2781 odp_flow_key_from_flow__(buf, flow, mask, odp_in_port, SIZE_MAX, recirc,
2782 false);
2783 }
2784
2785 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
2786 * 'buf'. 'flow' is used as a template to determine how to interpret
2787 * 'mask'. For example, the 'dl_type' of 'mask' describes the mask, but
2788 * it doesn't indicate whether the other fields should be interpreted as
2789 * ARP, IPv4, IPv6, etc.
2790 *
2791 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2792 * capable of being expanded to allow for that much space.
2793 *
2794 * 'recirc' indicates support for recirculation fields. If this is true, then
2795 * these fields will always be serialised. */
2796 void
2797 odp_flow_key_from_mask(struct ofpbuf *buf, const struct flow *mask,
2798 const struct flow *flow, uint32_t odp_in_port_mask,
2799 size_t max_mpls_depth, bool recirc)
2800 {
2801 odp_flow_key_from_flow__(buf, flow, mask, u32_to_odp(odp_in_port_mask),
2802 max_mpls_depth, recirc, true);
2803 }
2804
2805 /* Generate ODP flow key from the given packet metadata */
2806 void
2807 odp_key_from_pkt_metadata(struct ofpbuf *buf, const struct pkt_metadata *md)
2808 {
2809 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, md->skb_priority);
2810
2811 if (md->tunnel.ip_dst) {
2812 tun_key_to_attr(buf, &md->tunnel);
2813 }
2814
2815 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, md->pkt_mark);
2816
2817 /* Add an ingress port attribute if 'odp_in_port' is not the magical
2818 * value "ODPP_NONE". */
2819 if (md->in_port.odp_port != ODPP_NONE) {
2820 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, md->in_port.odp_port);
2821 }
2822 }
2823
2824 /* Generate packet metadata from the given ODP flow key. */
2825 void
2826 odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len,
2827 struct pkt_metadata *md)
2828 {
2829 const struct nlattr *nla;
2830 size_t left;
2831 uint32_t wanted_attrs = 1u << OVS_KEY_ATTR_PRIORITY |
2832 1u << OVS_KEY_ATTR_SKB_MARK | 1u << OVS_KEY_ATTR_TUNNEL |
2833 1u << OVS_KEY_ATTR_IN_PORT;
2834
2835 *md = PKT_METADATA_INITIALIZER(ODPP_NONE);
2836
2837 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2838 uint16_t type = nl_attr_type(nla);
2839 size_t len = nl_attr_get_size(nla);
2840 int expected_len = odp_flow_key_attr_len(type);
2841
2842 if (len != expected_len && expected_len >= 0) {
2843 continue;
2844 }
2845
2846 switch (type) {
2847 case OVS_KEY_ATTR_RECIRC_ID:
2848 md->recirc_id = nl_attr_get_u32(nla);
2849 wanted_attrs &= ~(1u << OVS_KEY_ATTR_RECIRC_ID);
2850 break;
2851 case OVS_KEY_ATTR_DP_HASH:
2852 md->dp_hash = nl_attr_get_u32(nla);
2853 wanted_attrs &= ~(1u << OVS_KEY_ATTR_DP_HASH);
2854 break;
2855 case OVS_KEY_ATTR_PRIORITY:
2856 md->skb_priority = nl_attr_get_u32(nla);
2857 wanted_attrs &= ~(1u << OVS_KEY_ATTR_PRIORITY);
2858 break;
2859 case OVS_KEY_ATTR_SKB_MARK:
2860 md->pkt_mark = nl_attr_get_u32(nla);
2861 wanted_attrs &= ~(1u << OVS_KEY_ATTR_SKB_MARK);
2862 break;
2863 case OVS_KEY_ATTR_TUNNEL: {
2864 enum odp_key_fitness res;
2865
2866 res = odp_tun_key_from_attr(nla, &md->tunnel);
2867 if (res == ODP_FIT_ERROR) {
2868 memset(&md->tunnel, 0, sizeof md->tunnel);
2869 } else if (res == ODP_FIT_PERFECT) {
2870 wanted_attrs &= ~(1u << OVS_KEY_ATTR_TUNNEL);
2871 }
2872 break;
2873 }
2874 case OVS_KEY_ATTR_IN_PORT:
2875 md->in_port.odp_port = nl_attr_get_odp_port(nla);
2876 wanted_attrs &= ~(1u << OVS_KEY_ATTR_IN_PORT);
2877 break;
2878 default:
2879 break;
2880 }
2881
2882 if (!wanted_attrs) {
2883 return; /* Have everything. */
2884 }
2885 }
2886 }
2887
2888 uint32_t
2889 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
2890 {
2891 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
2892 return hash_words(ALIGNED_CAST(const uint32_t *, key),
2893 key_len / sizeof(uint32_t), 0);
2894 }
2895
2896 static void
2897 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
2898 uint64_t attrs, int out_of_range_attr,
2899 const struct nlattr *key, size_t key_len)
2900 {
2901 struct ds s;
2902 int i;
2903
2904 if (VLOG_DROP_DBG(rl)) {
2905 return;
2906 }
2907
2908 ds_init(&s);
2909 for (i = 0; i < 64; i++) {
2910 if (attrs & (UINT64_C(1) << i)) {
2911 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2912
2913 ds_put_format(&s, " %s",
2914 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
2915 }
2916 }
2917 if (out_of_range_attr) {
2918 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
2919 }
2920
2921 ds_put_cstr(&s, ": ");
2922 odp_flow_key_format(key, key_len, &s);
2923
2924 VLOG_DBG("%s:%s", title, ds_cstr(&s));
2925 ds_destroy(&s);
2926 }
2927
2928 static bool
2929 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
2930 {
2931 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2932
2933 if (odp_frag > OVS_FRAG_TYPE_LATER) {
2934 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
2935 return false;
2936 }
2937
2938 if (odp_frag != OVS_FRAG_TYPE_NONE) {
2939 flow->nw_frag |= FLOW_NW_FRAG_ANY;
2940 if (odp_frag == OVS_FRAG_TYPE_LATER) {
2941 flow->nw_frag |= FLOW_NW_FRAG_LATER;
2942 }
2943 }
2944 return true;
2945 }
2946
2947 static bool
2948 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
2949 const struct nlattr *attrs[], uint64_t *present_attrsp,
2950 int *out_of_range_attrp)
2951 {
2952 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2953 const struct nlattr *nla;
2954 uint64_t present_attrs;
2955 size_t left;
2956
2957 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
2958 present_attrs = 0;
2959 *out_of_range_attrp = 0;
2960 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2961 uint16_t type = nl_attr_type(nla);
2962 size_t len = nl_attr_get_size(nla);
2963 int expected_len = odp_flow_key_attr_len(type);
2964
2965 if (len != expected_len && expected_len >= 0) {
2966 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2967
2968 VLOG_ERR_RL(&rl, "attribute %s has length %"PRIuSIZE" but should have "
2969 "length %d", ovs_key_attr_to_string(type, namebuf,
2970 sizeof namebuf),
2971 len, expected_len);
2972 return false;
2973 }
2974
2975 if (type > OVS_KEY_ATTR_MAX) {
2976 *out_of_range_attrp = type;
2977 } else {
2978 if (present_attrs & (UINT64_C(1) << type)) {
2979 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2980
2981 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
2982 ovs_key_attr_to_string(type,
2983 namebuf, sizeof namebuf));
2984 return false;
2985 }
2986
2987 present_attrs |= UINT64_C(1) << type;
2988 attrs[type] = nla;
2989 }
2990 }
2991 if (left) {
2992 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
2993 return false;
2994 }
2995
2996 *present_attrsp = present_attrs;
2997 return true;
2998 }
2999
3000 static enum odp_key_fitness
3001 check_expectations(uint64_t present_attrs, int out_of_range_attr,
3002 uint64_t expected_attrs,
3003 const struct nlattr *key, size_t key_len)
3004 {
3005 uint64_t missing_attrs;
3006 uint64_t extra_attrs;
3007
3008 missing_attrs = expected_attrs & ~present_attrs;
3009 if (missing_attrs) {
3010 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
3011 log_odp_key_attributes(&rl, "expected but not present",
3012 missing_attrs, 0, key, key_len);
3013 return ODP_FIT_TOO_LITTLE;
3014 }
3015
3016 extra_attrs = present_attrs & ~expected_attrs;
3017 if (extra_attrs || out_of_range_attr) {
3018 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
3019 log_odp_key_attributes(&rl, "present but not expected",
3020 extra_attrs, out_of_range_attr, key, key_len);
3021 return ODP_FIT_TOO_MUCH;
3022 }
3023
3024 return ODP_FIT_PERFECT;
3025 }
3026
3027 static bool
3028 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
3029 uint64_t present_attrs, uint64_t *expected_attrs,
3030 struct flow *flow, const struct flow *src_flow)
3031 {
3032 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
3033 bool is_mask = flow != src_flow;
3034
3035 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
3036 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
3037 if (!is_mask && ntohs(flow->dl_type) < ETH_TYPE_MIN) {
3038 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
3039 ntohs(flow->dl_type));
3040 return false;
3041 }
3042 if (is_mask && ntohs(src_flow->dl_type) < ETH_TYPE_MIN &&
3043 flow->dl_type != htons(0xffff)) {
3044 return false;
3045 }
3046 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
3047 } else {
3048 if (!is_mask) {
3049 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
3050 } else if (ntohs(src_flow->dl_type) < ETH_TYPE_MIN) {
3051 /* See comments in odp_flow_key_from_flow__(). */
3052 VLOG_ERR_RL(&rl, "mask expected for non-Ethernet II frame");
3053 return false;
3054 }
3055 }
3056 return true;
3057 }
3058
3059 static enum odp_key_fitness
3060 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
3061 uint64_t present_attrs, int out_of_range_attr,
3062 uint64_t expected_attrs, struct flow *flow,
3063 const struct nlattr *key, size_t key_len,
3064 const struct flow *src_flow)
3065 {
3066 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
3067 bool is_mask = src_flow != flow;
3068 const void *check_start = NULL;
3069 size_t check_len = 0;
3070 enum ovs_key_attr expected_bit = 0xff;
3071
3072 if (eth_type_mpls(src_flow->dl_type)) {
3073 size_t size = nl_attr_get_size(attrs[OVS_KEY_ATTR_MPLS]);
3074 const ovs_be32 *mpls_lse = nl_attr_get(attrs[OVS_KEY_ATTR_MPLS]);
3075 int n = size / sizeof(ovs_be32);
3076 int i;
3077
3078 if (!size || size % sizeof(ovs_be32)) {
3079 return ODP_FIT_ERROR;
3080 }
3081
3082 if (!is_mask) {
3083 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
3084
3085 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS))) {
3086 return ODP_FIT_TOO_LITTLE;
3087 }
3088 } else if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
3089 if (flow->mpls_lse[0] && flow->dl_type != htons(0xffff)) {
3090 return ODP_FIT_ERROR;
3091 }
3092 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
3093 }
3094
3095 for (i = 0; i < n && i < FLOW_MAX_MPLS_LABELS; i++) {
3096 flow->mpls_lse[i] = mpls_lse[i];
3097 }
3098 if (n > FLOW_MAX_MPLS_LABELS) {
3099 return ODP_FIT_TOO_MUCH;
3100 }
3101
3102 if (!is_mask) {
3103 /* BOS may be set only in the innermost label. */
3104 for (i = 0; i < n - 1; i++) {
3105 if (flow->mpls_lse[i] & htonl(MPLS_BOS_MASK)) {
3106 return ODP_FIT_ERROR;
3107 }
3108 }
3109
3110 /* BOS must be set in the innermost label. */
3111 if (n < FLOW_MAX_MPLS_LABELS
3112 && !(flow->mpls_lse[n - 1] & htonl(MPLS_BOS_MASK))) {
3113 return ODP_FIT_TOO_LITTLE;
3114 }
3115 }
3116
3117 goto done;
3118 } else if (src_flow->dl_type == htons(ETH_TYPE_IP)) {
3119 if (!is_mask) {
3120 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
3121 }
3122 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
3123 const struct ovs_key_ipv4 *ipv4_key;
3124
3125 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
3126 flow->nw_src = ipv4_key->ipv4_src;
3127 flow->nw_dst = ipv4_key->ipv4_dst;
3128 flow->nw_proto = ipv4_key->ipv4_proto;
3129 flow->nw_tos = ipv4_key->ipv4_tos;
3130 flow->nw_ttl = ipv4_key->ipv4_ttl;
3131 if (is_mask) {
3132 flow->nw_frag = ipv4_key->ipv4_frag;
3133 check_start = ipv4_key;
3134 check_len = sizeof *ipv4_key;
3135 expected_bit = OVS_KEY_ATTR_IPV4;
3136 } else if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
3137 return ODP_FIT_ERROR;
3138 }
3139 }
3140 } else if (src_flow->dl_type == htons(ETH_TYPE_IPV6)) {
3141 if (!is_mask) {
3142 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
3143 }
3144 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
3145 const struct ovs_key_ipv6 *ipv6_key;
3146
3147 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
3148 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
3149 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
3150 flow->ipv6_label = ipv6_key->ipv6_label;
3151 flow->nw_proto = ipv6_key->ipv6_proto;
3152 flow->nw_tos = ipv6_key->ipv6_tclass;
3153 flow->nw_ttl = ipv6_key->ipv6_hlimit;
3154 if (is_mask) {
3155 flow->nw_frag = ipv6_key->ipv6_frag;
3156 check_start = ipv6_key;
3157 check_len = sizeof *ipv6_key;
3158 expected_bit = OVS_KEY_ATTR_IPV6;
3159 } else if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
3160 return ODP_FIT_ERROR;
3161 }
3162 }
3163 } else if (src_flow->dl_type == htons(ETH_TYPE_ARP) ||
3164 src_flow->dl_type == htons(ETH_TYPE_RARP)) {
3165 if (!is_mask) {
3166 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
3167 }
3168 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
3169 const struct ovs_key_arp *arp_key;
3170
3171 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
3172 flow->nw_src = arp_key->arp_sip;
3173 flow->nw_dst = arp_key->arp_tip;
3174 if (!is_mask && (arp_key->arp_op & htons(0xff00))) {
3175 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
3176 "key", ntohs(arp_key->arp_op));
3177 return ODP_FIT_ERROR;
3178 }
3179 flow->nw_proto = ntohs(arp_key->arp_op);
3180 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
3181 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
3182
3183 if (is_mask) {
3184 check_start = arp_key;
3185 check_len = sizeof *arp_key;
3186 expected_bit = OVS_KEY_ATTR_ARP;
3187 }
3188 }
3189 } else {
3190 goto done;
3191 }
3192 if (check_len > 0) { /* Happens only when 'is_mask'. */
3193 if (!is_all_zeros(check_start, check_len) &&
3194 flow->dl_type != htons(0xffff)) {
3195 return ODP_FIT_ERROR;
3196 } else {
3197 expected_attrs |= UINT64_C(1) << expected_bit;
3198 }
3199 }
3200
3201 expected_bit = OVS_KEY_ATTR_UNSPEC;
3202 if (src_flow->nw_proto == IPPROTO_TCP
3203 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
3204 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3205 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3206 if (!is_mask) {
3207 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
3208 }
3209 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
3210 const struct ovs_key_tcp *tcp_key;
3211
3212 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
3213 flow->tp_src = tcp_key->tcp_src;
3214 flow->tp_dst = tcp_key->tcp_dst;
3215 expected_bit = OVS_KEY_ATTR_TCP;
3216 }
3217 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS)) {
3218 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS;
3219 flow->tcp_flags = nl_attr_get_be16(attrs[OVS_KEY_ATTR_TCP_FLAGS]);
3220 }
3221 } else if (src_flow->nw_proto == IPPROTO_UDP
3222 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
3223 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3224 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3225 if (!is_mask) {
3226 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
3227 }
3228 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
3229 const struct ovs_key_udp *udp_key;
3230
3231 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
3232 flow->tp_src = udp_key->udp_src;
3233 flow->tp_dst = udp_key->udp_dst;
3234 expected_bit = OVS_KEY_ATTR_UDP;
3235 }
3236 } else if (src_flow->nw_proto == IPPROTO_SCTP
3237 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
3238 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3239 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3240 if (!is_mask) {
3241 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SCTP;
3242 }
3243 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SCTP)) {
3244 const struct ovs_key_sctp *sctp_key;
3245
3246 sctp_key = nl_attr_get(attrs[OVS_KEY_ATTR_SCTP]);
3247 flow->tp_src = sctp_key->sctp_src;
3248 flow->tp_dst = sctp_key->sctp_dst;
3249 expected_bit = OVS_KEY_ATTR_SCTP;
3250 }
3251 } else if (src_flow->nw_proto == IPPROTO_ICMP
3252 && src_flow->dl_type == htons(ETH_TYPE_IP)
3253 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3254 if (!is_mask) {
3255 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
3256 }
3257 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
3258 const struct ovs_key_icmp *icmp_key;
3259
3260 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
3261 flow->tp_src = htons(icmp_key->icmp_type);
3262 flow->tp_dst = htons(icmp_key->icmp_code);
3263 expected_bit = OVS_KEY_ATTR_ICMP;
3264 }
3265 } else if (src_flow->nw_proto == IPPROTO_ICMPV6
3266 && src_flow->dl_type == htons(ETH_TYPE_IPV6)
3267 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3268 if (!is_mask) {
3269 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
3270 }
3271 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
3272 const struct ovs_key_icmpv6 *icmpv6_key;
3273
3274 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
3275 flow->tp_src = htons(icmpv6_key->icmpv6_type);
3276 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
3277 expected_bit = OVS_KEY_ATTR_ICMPV6;
3278 if (src_flow->tp_dst == htons(0) &&
3279 (src_flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
3280 src_flow->tp_src == htons(ND_NEIGHBOR_ADVERT))) {
3281 if (!is_mask) {
3282 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3283 }
3284 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
3285 const struct ovs_key_nd *nd_key;
3286
3287 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
3288 memcpy(&flow->nd_target, nd_key->nd_target,
3289 sizeof flow->nd_target);
3290 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
3291 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
3292 if (is_mask) {
3293 if (!is_all_zeros((const uint8_t *) nd_key,
3294 sizeof *nd_key) &&
3295 (flow->tp_src != htons(0xffff) ||
3296 flow->tp_dst != htons(0xffff))) {
3297 return ODP_FIT_ERROR;
3298 } else {
3299 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3300 }
3301 }
3302 }
3303 }
3304 }
3305 }
3306 if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
3307 if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
3308 return ODP_FIT_ERROR;
3309 } else {
3310 expected_attrs |= UINT64_C(1) << expected_bit;
3311 }
3312 }
3313
3314 done:
3315 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
3316 key, key_len);
3317 }
3318
3319 /* Parse 802.1Q header then encapsulated L3 attributes. */
3320 static enum odp_key_fitness
3321 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
3322 uint64_t present_attrs, int out_of_range_attr,
3323 uint64_t expected_attrs, struct flow *flow,
3324 const struct nlattr *key, size_t key_len,
3325 const struct flow *src_flow)
3326 {
3327 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
3328 bool is_mask = src_flow != flow;
3329
3330 const struct nlattr *encap
3331 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
3332 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
3333 enum odp_key_fitness encap_fitness;
3334 enum odp_key_fitness fitness;
3335
3336 /* Calculate fitness of outer attributes. */
3337 if (!is_mask) {
3338 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
3339 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
3340 } else {
3341 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3342 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3343 }
3344 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)) {
3345 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_ENCAP);
3346 }
3347 }
3348 fitness = check_expectations(present_attrs, out_of_range_attr,
3349 expected_attrs, key, key_len);
3350
3351 /* Set vlan_tci.
3352 * Remove the TPID from dl_type since it's not the real Ethertype. */
3353 flow->dl_type = htons(0);
3354 flow->vlan_tci = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)
3355 ? nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN])
3356 : htons(0));
3357 if (!is_mask) {
3358 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
3359 return ODP_FIT_TOO_LITTLE;
3360 } else if (flow->vlan_tci == htons(0)) {
3361 /* Corner case for a truncated 802.1Q header. */
3362 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
3363 return ODP_FIT_TOO_MUCH;
3364 }
3365 return fitness;
3366 } else if (!(flow->vlan_tci & htons(VLAN_CFI))) {
3367 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
3368 "but CFI bit is not set", ntohs(flow->vlan_tci));
3369 return ODP_FIT_ERROR;
3370 }
3371 } else {
3372 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))) {
3373 return fitness;
3374 }
3375 }
3376
3377 /* Now parse the encapsulated attributes. */
3378 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
3379 attrs, &present_attrs, &out_of_range_attr)) {
3380 return ODP_FIT_ERROR;
3381 }
3382 expected_attrs = 0;
3383
3384 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow, src_flow)) {
3385 return ODP_FIT_ERROR;
3386 }
3387 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3388 expected_attrs, flow, key, key_len,
3389 src_flow);
3390
3391 /* The overall fitness is the worse of the outer and inner attributes. */
3392 return MAX(fitness, encap_fitness);
3393 }
3394
3395 static enum odp_key_fitness
3396 odp_flow_key_to_flow__(const struct nlattr *key, size_t key_len,
3397 struct flow *flow, const struct flow *src_flow)
3398 {
3399 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
3400 uint64_t expected_attrs;
3401 uint64_t present_attrs;
3402 int out_of_range_attr;
3403 bool is_mask = src_flow != flow;
3404
3405 memset(flow, 0, sizeof *flow);
3406
3407 /* Parse attributes. */
3408 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
3409 &out_of_range_attr)) {
3410 return ODP_FIT_ERROR;
3411 }
3412 expected_attrs = 0;
3413
3414 /* Metadata. */
3415 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID)) {
3416 flow->recirc_id = nl_attr_get_u32(attrs[OVS_KEY_ATTR_RECIRC_ID]);
3417 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID;
3418 } else if (is_mask) {
3419 /* Always exact match recirc_id if it is not specified. */
3420 flow->recirc_id = UINT32_MAX;
3421 }
3422
3423 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_DP_HASH)) {
3424 flow->dp_hash = nl_attr_get_u32(attrs[OVS_KEY_ATTR_DP_HASH]);
3425 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_DP_HASH;
3426 }
3427 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
3428 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
3429 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
3430 }
3431
3432 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
3433 flow->pkt_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
3434 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
3435 }
3436
3437 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
3438 enum odp_key_fitness res;
3439
3440 res = odp_tun_key_from_attr(attrs[OVS_KEY_ATTR_TUNNEL], &flow->tunnel);
3441 if (res == ODP_FIT_ERROR) {
3442 return ODP_FIT_ERROR;
3443 } else if (res == ODP_FIT_PERFECT) {
3444 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
3445 }
3446 }
3447
3448 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
3449 flow->in_port.odp_port
3450 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
3451 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
3452 } else if (!is_mask) {
3453 flow->in_port.odp_port = ODPP_NONE;
3454 }
3455
3456 /* Ethernet header. */
3457 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
3458 const struct ovs_key_ethernet *eth_key;
3459
3460 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
3461 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
3462 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
3463 if (is_mask) {
3464 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3465 }
3466 }
3467 if (!is_mask) {
3468 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3469 }
3470
3471 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
3472 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow,
3473 src_flow)) {
3474 return ODP_FIT_ERROR;
3475 }
3476
3477 if (is_mask
3478 ? (src_flow->vlan_tci & htons(VLAN_CFI)) != 0
3479 : src_flow->dl_type == htons(ETH_TYPE_VLAN)) {
3480 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
3481 expected_attrs, flow, key, key_len, src_flow);
3482 }
3483 if (is_mask) {
3484 flow->vlan_tci = htons(0xffff);
3485 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3486 flow->vlan_tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
3487 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3488 }
3489 }
3490 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3491 expected_attrs, flow, key, key_len, src_flow);
3492 }
3493
3494 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
3495 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
3496 * 'key' fits our expectations for what a flow key should contain.
3497 *
3498 * The 'in_port' will be the datapath's understanding of the port. The
3499 * caller will need to translate with odp_port_to_ofp_port() if the
3500 * OpenFlow port is needed.
3501 *
3502 * This function doesn't take the packet itself as an argument because none of
3503 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
3504 * it is always possible to infer which additional attribute(s) should appear
3505 * by looking at the attributes for lower-level protocols, e.g. if the network
3506 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
3507 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
3508 * must be absent. */
3509 enum odp_key_fitness
3510 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
3511 struct flow *flow)
3512 {
3513 return odp_flow_key_to_flow__(key, key_len, flow, flow);
3514 }
3515
3516 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a mask
3517 * structure in 'mask'. 'flow' must be a previously translated flow
3518 * corresponding to 'mask'. Returns an ODP_FIT_* value that indicates how well
3519 * 'key' fits our expectations for what a flow key should contain. */
3520 enum odp_key_fitness
3521 odp_flow_key_to_mask(const struct nlattr *key, size_t key_len,
3522 struct flow *mask, const struct flow *flow)
3523 {
3524 return odp_flow_key_to_flow__(key, key_len, mask, flow);
3525 }
3526
3527 /* Returns 'fitness' as a string, for use in debug messages. */
3528 const char *
3529 odp_key_fitness_to_string(enum odp_key_fitness fitness)
3530 {
3531 switch (fitness) {
3532 case ODP_FIT_PERFECT:
3533 return "OK";
3534 case ODP_FIT_TOO_MUCH:
3535 return "too_much";
3536 case ODP_FIT_TOO_LITTLE:
3537 return "too_little";
3538 case ODP_FIT_ERROR:
3539 return "error";
3540 default:
3541 return "<unknown>";
3542 }
3543 }
3544
3545 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
3546 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
3547 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
3548 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
3549 * null, then the return value is not meaningful.) */
3550 size_t
3551 odp_put_userspace_action(uint32_t pid,
3552 const void *userdata, size_t userdata_size,
3553 odp_port_t tunnel_out_port,
3554 struct ofpbuf *odp_actions)
3555 {
3556 size_t userdata_ofs;
3557 size_t offset;
3558
3559 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
3560 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
3561 if (userdata) {
3562 userdata_ofs = ofpbuf_size(odp_actions) + NLA_HDRLEN;
3563
3564 /* The OVS kernel module before OVS 1.11 and the upstream Linux kernel
3565 * module before Linux 3.10 required the userdata to be exactly 8 bytes
3566 * long:
3567 *
3568 * - The kernel rejected shorter userdata with -ERANGE.
3569 *
3570 * - The kernel silently dropped userdata beyond the first 8 bytes.
3571 *
3572 * Thus, for maximum compatibility, always put at least 8 bytes. (We
3573 * separately disable features that required more than 8 bytes.) */
3574 memcpy(nl_msg_put_unspec_zero(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
3575 MAX(8, userdata_size)),
3576 userdata, userdata_size);
3577 } else {
3578 userdata_ofs = 0;
3579 }
3580 if (tunnel_out_port != ODPP_NONE) {
3581 nl_msg_put_odp_port(odp_actions, OVS_USERSPACE_ATTR_EGRESS_TUN_PORT,
3582 tunnel_out_port);
3583 }
3584 nl_msg_end_nested(odp_actions, offset);
3585
3586 return userdata_ofs;
3587 }
3588
3589 void
3590 odp_put_tunnel_action(const struct flow_tnl *tunnel,
3591 struct ofpbuf *odp_actions)
3592 {
3593 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3594 tun_key_to_attr(odp_actions, tunnel);
3595 nl_msg_end_nested(odp_actions, offset);
3596 }
3597 \f
3598 /* The commit_odp_actions() function and its helpers. */
3599
3600 static void
3601 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
3602 const void *key, size_t key_size)
3603 {
3604 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3605 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
3606 nl_msg_end_nested(odp_actions, offset);
3607 }
3608
3609 void
3610 odp_put_pkt_mark_action(const uint32_t pkt_mark,
3611 struct ofpbuf *odp_actions)
3612 {
3613 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK, &pkt_mark,
3614 sizeof(pkt_mark));
3615 }
3616
3617 /* If any of the flow key data that ODP actions can modify are different in
3618 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
3619 * 'odp_actions' that change the flow tunneling information in key from
3620 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
3621 * same way. In other words, operates the same as commit_odp_actions(), but
3622 * only on tunneling information. */
3623 void
3624 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
3625 struct ofpbuf *odp_actions)
3626 {
3627 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
3628 if (flow->tunnel.ip_dst) {
3629 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
3630 return;
3631 }
3632 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
3633 odp_put_tunnel_action(&base->tunnel, odp_actions);
3634 }
3635 }
3636
3637 static void
3638 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
3639 struct ofpbuf *odp_actions,
3640 struct flow_wildcards *wc)
3641 {
3642 struct ovs_key_ethernet eth_key;
3643
3644 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
3645 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
3646 return;
3647 }
3648
3649 memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
3650 memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
3651
3652 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
3653 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
3654
3655 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
3656 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
3657
3658 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
3659 &eth_key, sizeof(eth_key));
3660 }
3661
3662 static void
3663 pop_vlan(struct flow *base,
3664 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3665 {
3666 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
3667
3668 if (base->vlan_tci & htons(VLAN_CFI)) {
3669 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3670 base->vlan_tci = 0;
3671 }
3672 }
3673
3674 static void
3675 commit_vlan_action(ovs_be16 vlan_tci, struct flow *base,
3676 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3677 {
3678 if (base->vlan_tci == vlan_tci) {
3679 return;
3680 }
3681
3682 pop_vlan(base, odp_actions, wc);
3683 if (vlan_tci & htons(VLAN_CFI)) {
3684 struct ovs_action_push_vlan vlan;
3685
3686 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
3687 vlan.vlan_tci = vlan_tci;
3688 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3689 &vlan, sizeof vlan);
3690 }
3691 base->vlan_tci = vlan_tci;
3692 }
3693
3694 static void
3695 commit_mpls_action(const struct flow *flow, struct flow *base,
3696 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3697 {
3698 int base_n = flow_count_mpls_labels(base, wc);
3699 int flow_n = flow_count_mpls_labels(flow, wc);
3700 int common_n = flow_count_common_mpls_labels(flow, flow_n, base, base_n,
3701 wc);
3702
3703 while (base_n > common_n) {
3704 if (base_n - 1 == common_n && flow_n > common_n) {
3705 /* If there is only one more LSE in base than there are common
3706 * between base and flow; and flow has at least one more LSE than
3707 * is common then the topmost LSE of base may be updated using
3708 * set */
3709 struct ovs_key_mpls mpls_key;
3710
3711 mpls_key.mpls_lse = flow->mpls_lse[flow_n - base_n];
3712 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
3713 &mpls_key, sizeof mpls_key);
3714 flow_set_mpls_lse(base, 0, mpls_key.mpls_lse);
3715 common_n++;
3716 } else {
3717 /* Otherwise, if there more LSEs in base than are common between
3718 * base and flow then pop the topmost one. */
3719 ovs_be16 dl_type;
3720 bool popped;
3721
3722 /* If all the LSEs are to be popped and this is not the outermost
3723 * LSE then use ETH_TYPE_MPLS as the ethertype parameter of the
3724 * POP_MPLS action instead of flow->dl_type.
3725 *
3726 * This is because the POP_MPLS action requires its ethertype
3727 * argument to be an MPLS ethernet type but in this case
3728 * flow->dl_type will be a non-MPLS ethernet type.
3729 *
3730 * When the final POP_MPLS action occurs it use flow->dl_type and
3731 * the and the resulting packet will have the desired dl_type. */
3732 if ((!eth_type_mpls(flow->dl_type)) && base_n > 1) {
3733 dl_type = htons(ETH_TYPE_MPLS);
3734 } else {
3735 dl_type = flow->dl_type;
3736 }
3737 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, dl_type);
3738 popped = flow_pop_mpls(base, base_n, flow->dl_type, wc);
3739 ovs_assert(popped);
3740 base_n--;
3741 }
3742 }
3743
3744 /* If, after the above popping and setting, there are more LSEs in flow
3745 * than base then some LSEs need to be pushed. */
3746 while (base_n < flow_n) {
3747 struct ovs_action_push_mpls *mpls;
3748
3749 mpls = nl_msg_put_unspec_zero(odp_actions,
3750 OVS_ACTION_ATTR_PUSH_MPLS,
3751 sizeof *mpls);
3752 mpls->mpls_ethertype = flow->dl_type;
3753 mpls->mpls_lse = flow->mpls_lse[flow_n - base_n - 1];
3754 flow_push_mpls(base, base_n, mpls->mpls_ethertype, wc);
3755 flow_set_mpls_lse(base, 0, mpls->mpls_lse);
3756 base_n++;
3757 }
3758 }
3759
3760 static void
3761 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
3762 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3763 {
3764 struct ovs_key_ipv4 ipv4_key;
3765
3766 if (base->nw_src == flow->nw_src &&
3767 base->nw_dst == flow->nw_dst &&
3768 base->nw_tos == flow->nw_tos &&
3769 base->nw_ttl == flow->nw_ttl &&
3770 base->nw_frag == flow->nw_frag) {
3771 return;
3772 }
3773
3774 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3775 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3776 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3777 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3778 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3779 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3780
3781 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
3782 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
3783 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
3784 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
3785 ipv4_key.ipv4_proto = base->nw_proto;
3786 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
3787
3788 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
3789 &ipv4_key, sizeof(ipv4_key));
3790 }
3791
3792 static void
3793 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
3794 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3795 {
3796 struct ovs_key_ipv6 ipv6_key;
3797
3798 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
3799 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
3800 base->ipv6_label == flow->ipv6_label &&
3801 base->nw_tos == flow->nw_tos &&
3802 base->nw_ttl == flow->nw_ttl &&
3803 base->nw_frag == flow->nw_frag) {
3804 return;
3805 }
3806
3807 memset(&wc->masks.ipv6_src, 0xff, sizeof wc->masks.ipv6_src);
3808 memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst);
3809 memset(&wc->masks.ipv6_label, 0xff, sizeof wc->masks.ipv6_label);
3810 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3811 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3812 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3813 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3814
3815 base->ipv6_src = flow->ipv6_src;
3816 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
3817 base->ipv6_dst = flow->ipv6_dst;
3818 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
3819
3820 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
3821 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
3822 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
3823 ipv6_key.ipv6_proto = base->nw_proto;
3824 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
3825
3826 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
3827 &ipv6_key, sizeof(ipv6_key));
3828 }
3829
3830 static enum slow_path_reason
3831 commit_set_arp_action(const struct flow *flow, struct flow *base,
3832 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3833 {
3834 struct ovs_key_arp arp_key;
3835
3836 if (base->nw_src == flow->nw_src &&
3837 base->nw_dst == flow->nw_dst &&
3838 base->nw_proto == flow->nw_proto &&
3839 eth_addr_equals(base->arp_sha, flow->arp_sha) &&
3840 eth_addr_equals(base->arp_tha, flow->arp_tha)) {
3841 return 0;
3842 }
3843
3844 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3845 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3846 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3847 memset(&wc->masks.arp_sha, 0xff, sizeof wc->masks.arp_sha);
3848 memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
3849
3850 base->nw_src = flow->nw_src;
3851 base->nw_dst = flow->nw_dst;
3852 base->nw_proto = flow->nw_proto;
3853 memcpy(base->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3854 memcpy(base->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3855
3856 arp_key.arp_sip = base->nw_src;
3857 arp_key.arp_tip = base->nw_dst;
3858 arp_key.arp_op = htons(base->nw_proto);
3859 memcpy(arp_key.arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3860 memcpy(arp_key.arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3861
3862 commit_set_action(odp_actions, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
3863
3864 return SLOW_ACTION;
3865 }
3866
3867 static enum slow_path_reason
3868 commit_set_nw_action(const struct flow *flow, struct flow *base,
3869 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3870 {
3871 /* Check if 'flow' really has an L3 header. */
3872 if (!flow->nw_proto) {
3873 return 0;
3874 }
3875
3876 switch (ntohs(base->dl_type)) {
3877 case ETH_TYPE_IP:
3878 commit_set_ipv4_action(flow, base, odp_actions, wc);
3879 break;
3880
3881 case ETH_TYPE_IPV6:
3882 commit_set_ipv6_action(flow, base, odp_actions, wc);
3883 break;
3884
3885 case ETH_TYPE_ARP:
3886 return commit_set_arp_action(flow, base, odp_actions, wc);
3887 }
3888
3889 return 0;
3890 }
3891
3892 static void
3893 commit_set_port_action(const struct flow *flow, struct flow *base,
3894 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3895 {
3896 /* Check if 'flow' really has an L3 header. */
3897 if (!flow->nw_proto) {
3898 return;
3899 }
3900
3901 if (!is_ip_any(base) || (!base->tp_src && !base->tp_dst)) {
3902 return;
3903 }
3904
3905 if (base->tp_src == flow->tp_src &&
3906 base->tp_dst == flow->tp_dst) {
3907 return;
3908 }
3909
3910 memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
3911 memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
3912
3913 if (flow->nw_proto == IPPROTO_TCP) {
3914 struct ovs_key_tcp port_key;
3915
3916 port_key.tcp_src = base->tp_src = flow->tp_src;
3917 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
3918
3919 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
3920 &port_key, sizeof(port_key));
3921
3922 } else if (flow->nw_proto == IPPROTO_UDP) {
3923 struct ovs_key_udp port_key;
3924
3925 port_key.udp_src = base->tp_src = flow->tp_src;
3926 port_key.udp_dst = base->tp_dst = flow->tp_dst;
3927
3928 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
3929 &port_key, sizeof(port_key));
3930 } else if (flow->nw_proto == IPPROTO_SCTP) {
3931 struct ovs_key_sctp port_key;
3932
3933 port_key.sctp_src = base->tp_src = flow->tp_src;
3934 port_key.sctp_dst = base->tp_dst = flow->tp_dst;
3935
3936 commit_set_action(odp_actions, OVS_KEY_ATTR_SCTP,
3937 &port_key, sizeof(port_key));
3938 }
3939 }
3940
3941 static void
3942 commit_set_priority_action(const struct flow *flow, struct flow *base,
3943 struct ofpbuf *odp_actions,
3944 struct flow_wildcards *wc)
3945 {
3946 if (base->skb_priority == flow->skb_priority) {
3947 return;
3948 }
3949
3950 memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
3951 base->skb_priority = flow->skb_priority;
3952
3953 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
3954 &base->skb_priority, sizeof(base->skb_priority));
3955 }
3956
3957 static void
3958 commit_set_pkt_mark_action(const struct flow *flow, struct flow *base,
3959 struct ofpbuf *odp_actions,
3960 struct flow_wildcards *wc)
3961 {
3962 if (base->pkt_mark == flow->pkt_mark) {
3963 return;
3964 }
3965
3966 memset(&wc->masks.pkt_mark, 0xff, sizeof wc->masks.pkt_mark);
3967 base->pkt_mark = flow->pkt_mark;
3968
3969 odp_put_pkt_mark_action(base->pkt_mark, odp_actions);
3970 }
3971
3972 /* If any of the flow key data that ODP actions can modify are different in
3973 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
3974 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
3975 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
3976 * in addition to this function if needed. Sets fields in 'wc' that are
3977 * used as part of the action.
3978 *
3979 * Returns a reason to force processing the flow's packets into the userspace
3980 * slow path, if there is one, otherwise 0. */
3981 enum slow_path_reason
3982 commit_odp_actions(const struct flow *flow, struct flow *base,
3983 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3984 {
3985 enum slow_path_reason slow;
3986
3987 commit_set_ether_addr_action(flow, base, odp_actions, wc);
3988 slow = commit_set_nw_action(flow, base, odp_actions, wc);
3989 commit_set_port_action(flow, base, odp_actions, wc);
3990 commit_mpls_action(flow, base, odp_actions, wc);
3991 commit_vlan_action(flow->vlan_tci, base, odp_actions, wc);
3992 commit_set_priority_action(flow, base, odp_actions, wc);
3993 commit_set_pkt_mark_action(flow, base, odp_actions, wc);
3994
3995 return slow;
3996 }
openvswitch packages for PVE