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1 /*
2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <config.h>
18 #include <arpa/inet.h>
19 #include "odp-util.h"
20 #include <errno.h>
21 #include <inttypes.h>
22 #include <math.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include "byte-order.h"
28 #include "coverage.h"
29 #include "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_SET: return -2;
83 case OVS_ACTION_ATTR_SAMPLE: return -2;
84
85 case OVS_ACTION_ATTR_UNSPEC:
86 case __OVS_ACTION_ATTR_MAX:
87 return -1;
88 }
89
90 return -1;
91 }
92
93 /* Returns a string form of 'attr'. The return value is either a statically
94 * allocated constant string or the 'bufsize'-byte buffer 'namebuf'. 'bufsize'
95 * should be at least OVS_KEY_ATTR_BUFSIZE. */
96 enum { OVS_KEY_ATTR_BUFSIZE = 3 + INT_STRLEN(unsigned int) + 1 };
97 static const char *
98 ovs_key_attr_to_string(enum ovs_key_attr attr, char *namebuf, size_t bufsize)
99 {
100 switch (attr) {
101 case OVS_KEY_ATTR_UNSPEC: return "unspec";
102 case OVS_KEY_ATTR_ENCAP: return "encap";
103 case OVS_KEY_ATTR_PRIORITY: return "skb_priority";
104 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
105 case OVS_KEY_ATTR_TUNNEL: return "tunnel";
106 case OVS_KEY_ATTR_IN_PORT: return "in_port";
107 case OVS_KEY_ATTR_ETHERNET: return "eth";
108 case OVS_KEY_ATTR_VLAN: return "vlan";
109 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
110 case OVS_KEY_ATTR_IPV4: return "ipv4";
111 case OVS_KEY_ATTR_IPV6: return "ipv6";
112 case OVS_KEY_ATTR_TCP: return "tcp";
113 case OVS_KEY_ATTR_TCP_FLAGS: return "tcp_flags";
114 case OVS_KEY_ATTR_UDP: return "udp";
115 case OVS_KEY_ATTR_SCTP: return "sctp";
116 case OVS_KEY_ATTR_ICMP: return "icmp";
117 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
118 case OVS_KEY_ATTR_ARP: return "arp";
119 case OVS_KEY_ATTR_ND: return "nd";
120 case OVS_KEY_ATTR_MPLS: return "mpls";
121
122 case __OVS_KEY_ATTR_MAX:
123 default:
124 snprintf(namebuf, bufsize, "key%u", (unsigned int) attr);
125 return namebuf;
126 }
127 }
128
129 static void
130 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
131 {
132 size_t len = nl_attr_get_size(a);
133
134 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
135 if (len) {
136 const uint8_t *unspec;
137 unsigned int i;
138
139 unspec = nl_attr_get(a);
140 for (i = 0; i < len; i++) {
141 ds_put_char(ds, i ? ' ': '(');
142 ds_put_format(ds, "%02x", unspec[i]);
143 }
144 ds_put_char(ds, ')');
145 }
146 }
147
148 static void
149 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
150 {
151 static const struct nl_policy ovs_sample_policy[] = {
152 { NL_A_NO_ATTR, 0, 0, false }, /* OVS_SAMPLE_ATTR_UNSPEC */
153 { NL_A_U32, 0, 0, false }, /* OVS_SAMPLE_ATTR_PROBABILITY */
154 { NL_A_NESTED, 0, 0, false }, /* OVS_SAMPLE_ATTR_ACTIONS */
155 };
156 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
157 double percentage;
158 const struct nlattr *nla_acts;
159 int len;
160
161 ds_put_cstr(ds, "sample");
162
163 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
164 ds_put_cstr(ds, "(error)");
165 return;
166 }
167
168 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
169 UINT32_MAX;
170
171 ds_put_format(ds, "(sample=%.1f%%,", percentage);
172
173 ds_put_cstr(ds, "actions(");
174 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
175 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
176 format_odp_actions(ds, nla_acts, len);
177 ds_put_format(ds, "))");
178 }
179
180 static const char *
181 slow_path_reason_to_string(uint32_t reason)
182 {
183 switch ((enum slow_path_reason) reason) {
184 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return STRING;
185 SLOW_PATH_REASONS
186 #undef SPR
187 }
188
189 return NULL;
190 }
191
192 const char *
193 slow_path_reason_to_explanation(enum slow_path_reason reason)
194 {
195 switch (reason) {
196 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return EXPLANATION;
197 SLOW_PATH_REASONS
198 #undef SPR
199 }
200
201 return "<unknown>";
202 }
203
204 static int
205 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
206 uint32_t *res)
207 {
208 uint32_t result = 0;
209 int n = 0;
210
211 if (s[n] != '(') {
212 return -EINVAL;
213 }
214 n++;
215
216 while (s[n] != ')') {
217 unsigned long long int flags;
218 uint32_t bit;
219 int n0;
220
221 if (ovs_scan(&s[n], "%lli%n", &flags, &n0)) {
222 n += n0 + (s[n + n0] == ',');
223 result |= flags;
224 continue;
225 }
226
227 for (bit = 1; bit; bit <<= 1) {
228 const char *name = bit_to_string(bit);
229 size_t len;
230
231 if (!name) {
232 continue;
233 }
234
235 len = strlen(name);
236 if (!strncmp(s + n, name, len) &&
237 (s[n + len] == ',' || s[n + len] == ')')) {
238 result |= bit;
239 n += len + (s[n + len] == ',');
240 break;
241 }
242 }
243
244 if (!bit) {
245 return -EINVAL;
246 }
247 }
248 n++;
249
250 *res = result;
251 return n;
252 }
253
254 static void
255 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
256 {
257 static const struct nl_policy ovs_userspace_policy[] = {
258 { NL_A_NO_ATTR, 0, 0, false }, /* OVS_USERSPACE_ATTR_UNSPEC */
259 { NL_A_U32, 0, 0, false }, /* OVS_USERSPACE_ATTR_PID */
260 { NL_A_UNSPEC, 0, 0, true }, /* OVS_USERSPACE_ATTR_USERDATA */
261 };
262 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
263 const struct nlattr *userdata_attr;
264
265 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
266 ds_put_cstr(ds, "userspace(error)");
267 return;
268 }
269
270 ds_put_format(ds, "userspace(pid=%"PRIu32,
271 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
272
273 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
274
275 if (userdata_attr) {
276 const uint8_t *userdata = nl_attr_get(userdata_attr);
277 size_t userdata_len = nl_attr_get_size(userdata_attr);
278 bool userdata_unspec = true;
279 union user_action_cookie cookie;
280
281 if (userdata_len >= sizeof cookie.type
282 && userdata_len <= sizeof cookie) {
283
284 memset(&cookie, 0, sizeof cookie);
285 memcpy(&cookie, userdata, userdata_len);
286
287 userdata_unspec = false;
288
289 if (userdata_len == sizeof cookie.sflow
290 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
291 ds_put_format(ds, ",sFlow("
292 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
293 vlan_tci_to_vid(cookie.sflow.vlan_tci),
294 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
295 cookie.sflow.output);
296 } else if (userdata_len == sizeof cookie.slow_path
297 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
298 ds_put_cstr(ds, ",slow_path(");
299 format_flags(ds, slow_path_reason_to_string,
300 cookie.slow_path.reason, ',');
301 ds_put_format(ds, ")");
302 } else if (userdata_len == sizeof cookie.flow_sample
303 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
304 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
305 ",collector_set_id=%"PRIu32
306 ",obs_domain_id=%"PRIu32
307 ",obs_point_id=%"PRIu32")",
308 cookie.flow_sample.probability,
309 cookie.flow_sample.collector_set_id,
310 cookie.flow_sample.obs_domain_id,
311 cookie.flow_sample.obs_point_id);
312 } else if (userdata_len >= sizeof cookie.ipfix
313 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
314 ds_put_format(ds, ",ipfix");
315 } else {
316 userdata_unspec = true;
317 }
318 }
319
320 if (userdata_unspec) {
321 size_t i;
322 ds_put_format(ds, ",userdata(");
323 for (i = 0; i < userdata_len; i++) {
324 ds_put_format(ds, "%02x", userdata[i]);
325 }
326 ds_put_char(ds, ')');
327 }
328 }
329
330 ds_put_char(ds, ')');
331 }
332
333 static void
334 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
335 {
336 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
337 vlan_tci_to_vid(vlan_tci),
338 vlan_tci_to_pcp(vlan_tci));
339 if (!(vlan_tci & htons(VLAN_CFI))) {
340 ds_put_cstr(ds, ",cfi=0");
341 }
342 }
343
344 static void
345 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
346 {
347 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
348 mpls_lse_to_label(mpls_lse),
349 mpls_lse_to_tc(mpls_lse),
350 mpls_lse_to_ttl(mpls_lse),
351 mpls_lse_to_bos(mpls_lse));
352 }
353
354 static void
355 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
356 const struct ovs_key_mpls *mpls_mask)
357 {
358 ovs_be32 key = mpls_key->mpls_lse;
359
360 if (mpls_mask == NULL) {
361 format_mpls_lse(ds, key);
362 } else {
363 ovs_be32 mask = mpls_mask->mpls_lse;
364
365 ds_put_format(ds, "label=%"PRIu32"/0x%x,tc=%d/%x,ttl=%d/0x%x,bos=%d/%x",
366 mpls_lse_to_label(key), mpls_lse_to_label(mask),
367 mpls_lse_to_tc(key), mpls_lse_to_tc(mask),
368 mpls_lse_to_ttl(key), mpls_lse_to_ttl(mask),
369 mpls_lse_to_bos(key), mpls_lse_to_bos(mask));
370 }
371 }
372
373 static void
374 format_odp_action(struct ds *ds, const struct nlattr *a)
375 {
376 int expected_len;
377 enum ovs_action_attr type = nl_attr_type(a);
378 const struct ovs_action_push_vlan *vlan;
379
380 expected_len = odp_action_len(nl_attr_type(a));
381 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
382 ds_put_format(ds, "bad length %"PRIuSIZE", expected %d for: ",
383 nl_attr_get_size(a), expected_len);
384 format_generic_odp_action(ds, a);
385 return;
386 }
387
388 switch (type) {
389 case OVS_ACTION_ATTR_OUTPUT:
390 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
391 break;
392 case OVS_ACTION_ATTR_USERSPACE:
393 format_odp_userspace_action(ds, a);
394 break;
395 case OVS_ACTION_ATTR_SET:
396 ds_put_cstr(ds, "set(");
397 format_odp_key_attr(nl_attr_get(a), NULL, NULL, ds, true);
398 ds_put_cstr(ds, ")");
399 break;
400 case OVS_ACTION_ATTR_PUSH_VLAN:
401 vlan = nl_attr_get(a);
402 ds_put_cstr(ds, "push_vlan(");
403 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
404 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
405 }
406 format_vlan_tci(ds, vlan->vlan_tci);
407 ds_put_char(ds, ')');
408 break;
409 case OVS_ACTION_ATTR_POP_VLAN:
410 ds_put_cstr(ds, "pop_vlan");
411 break;
412 case OVS_ACTION_ATTR_PUSH_MPLS: {
413 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
414 ds_put_cstr(ds, "push_mpls(");
415 format_mpls_lse(ds, mpls->mpls_lse);
416 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
417 break;
418 }
419 case OVS_ACTION_ATTR_POP_MPLS: {
420 ovs_be16 ethertype = nl_attr_get_be16(a);
421 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
422 break;
423 }
424 case OVS_ACTION_ATTR_SAMPLE:
425 format_odp_sample_action(ds, a);
426 break;
427 case OVS_ACTION_ATTR_UNSPEC:
428 case __OVS_ACTION_ATTR_MAX:
429 default:
430 format_generic_odp_action(ds, a);
431 break;
432 }
433 }
434
435 void
436 format_odp_actions(struct ds *ds, const struct nlattr *actions,
437 size_t actions_len)
438 {
439 if (actions_len) {
440 const struct nlattr *a;
441 unsigned int left;
442
443 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
444 if (a != actions) {
445 ds_put_char(ds, ',');
446 }
447 format_odp_action(ds, a);
448 }
449 if (left) {
450 int i;
451
452 if (left == actions_len) {
453 ds_put_cstr(ds, "<empty>");
454 }
455 ds_put_format(ds, ",***%u leftover bytes*** (", left);
456 for (i = 0; i < left; i++) {
457 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
458 }
459 ds_put_char(ds, ')');
460 }
461 } else {
462 ds_put_cstr(ds, "drop");
463 }
464 }
465
466 static int
467 parse_odp_action(const char *s, const struct simap *port_names,
468 struct ofpbuf *actions)
469 {
470 {
471 uint32_t port;
472 int n;
473
474 if (ovs_scan(s, "%"SCNi32"%n", &port, &n)) {
475 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
476 return n;
477 }
478 }
479
480 if (port_names) {
481 int len = strcspn(s, delimiters);
482 struct simap_node *node;
483
484 node = simap_find_len(port_names, s, len);
485 if (node) {
486 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
487 return len;
488 }
489 }
490
491 {
492 uint32_t pid;
493 uint32_t output;
494 uint32_t probability;
495 uint32_t collector_set_id;
496 uint32_t obs_domain_id;
497 uint32_t obs_point_id;
498 int vid, pcp;
499 int n = -1;
500
501 if (ovs_scan(s, "userspace(pid=%"SCNi32")%n", &pid, &n)) {
502 odp_put_userspace_action(pid, NULL, 0, actions);
503 return n;
504 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",sFlow(vid=%i,"
505 "pcp=%i,output=%"SCNi32"))%n",
506 &pid, &vid, &pcp, &output, &n)) {
507 union user_action_cookie cookie;
508 uint16_t tci;
509
510 tci = vid | (pcp << VLAN_PCP_SHIFT);
511 if (tci) {
512 tci |= VLAN_CFI;
513 }
514
515 cookie.type = USER_ACTION_COOKIE_SFLOW;
516 cookie.sflow.vlan_tci = htons(tci);
517 cookie.sflow.output = output;
518 odp_put_userspace_action(pid, &cookie, sizeof cookie.sflow,
519 actions);
520 return n;
521 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",slow_path%n",
522 &pid, &n)) {
523 union user_action_cookie cookie;
524 int res;
525
526 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
527 cookie.slow_path.unused = 0;
528 cookie.slow_path.reason = 0;
529
530 res = parse_flags(&s[n], slow_path_reason_to_string,
531 &cookie.slow_path.reason);
532 if (res < 0) {
533 return res;
534 }
535 n += res;
536 if (s[n] != ')') {
537 return -EINVAL;
538 }
539 n++;
540
541 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path,
542 actions);
543 return n;
544 } else if (ovs_scan(s, "userspace(pid=%"SCNi32","
545 "flow_sample(probability=%"SCNi32","
546 "collector_set_id=%"SCNi32","
547 "obs_domain_id=%"SCNi32","
548 "obs_point_id=%"SCNi32"))%n",
549 &pid, &probability, &collector_set_id,
550 &obs_domain_id, &obs_point_id, &n)) {
551 union user_action_cookie cookie;
552
553 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
554 cookie.flow_sample.probability = probability;
555 cookie.flow_sample.collector_set_id = collector_set_id;
556 cookie.flow_sample.obs_domain_id = obs_domain_id;
557 cookie.flow_sample.obs_point_id = obs_point_id;
558 odp_put_userspace_action(pid, &cookie, sizeof cookie.flow_sample,
559 actions);
560 return n;
561 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",ipfix)%n", &pid, &n)) {
562 union user_action_cookie cookie;
563
564 cookie.type = USER_ACTION_COOKIE_IPFIX;
565 odp_put_userspace_action(pid, &cookie, sizeof cookie.ipfix,
566 actions);
567 return n;
568 } else if (ovs_scan(s, "userspace(pid=%"SCNi32",userdata(%n",
569 &pid, &n)) {
570 struct ofpbuf buf;
571 char *end;
572
573 ofpbuf_init(&buf, 16);
574 end = ofpbuf_put_hex(&buf, &s[n], NULL);
575 if (end[0] == ')' && end[1] == ')') {
576 odp_put_userspace_action(pid, buf.data, buf.size, actions);
577 ofpbuf_uninit(&buf);
578 return (end + 2) - s;
579 }
580 }
581 }
582
583 if (!strncmp(s, "set(", 4)) {
584 size_t start_ofs;
585 int retval;
586
587 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
588 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, NULL);
589 if (retval < 0) {
590 return retval;
591 }
592 if (s[retval + 4] != ')') {
593 return -EINVAL;
594 }
595 nl_msg_end_nested(actions, start_ofs);
596 return retval + 5;
597 }
598
599 {
600 struct ovs_action_push_vlan push;
601 int tpid = ETH_TYPE_VLAN;
602 int vid, pcp;
603 int cfi = 1;
604 int n = -1;
605
606 if (ovs_scan(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)
607 || ovs_scan(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
608 &vid, &pcp, &cfi, &n)
609 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
610 &tpid, &vid, &pcp, &n)
611 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
612 &tpid, &vid, &pcp, &cfi, &n)) {
613 push.vlan_tpid = htons(tpid);
614 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
615 | (pcp << VLAN_PCP_SHIFT)
616 | (cfi ? VLAN_CFI : 0));
617 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
618 &push, sizeof push);
619
620 return n;
621 }
622 }
623
624 if (!strncmp(s, "pop_vlan", 8)) {
625 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
626 return 8;
627 }
628
629 {
630 double percentage;
631 int n = -1;
632
633 if (ovs_scan(s, "sample(sample=%lf%%,actions(%n", &percentage, &n)
634 && percentage >= 0. && percentage <= 100.0) {
635 size_t sample_ofs, actions_ofs;
636 double probability;
637
638 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
639 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
640 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
641 (probability <= 0 ? 0
642 : probability >= UINT32_MAX ? UINT32_MAX
643 : probability));
644
645 actions_ofs = nl_msg_start_nested(actions,
646 OVS_SAMPLE_ATTR_ACTIONS);
647 for (;;) {
648 int retval;
649
650 n += strspn(s + n, delimiters);
651 if (s[n] == ')') {
652 break;
653 }
654
655 retval = parse_odp_action(s + n, port_names, actions);
656 if (retval < 0) {
657 return retval;
658 }
659 n += retval;
660 }
661 nl_msg_end_nested(actions, actions_ofs);
662 nl_msg_end_nested(actions, sample_ofs);
663
664 return s[n + 1] == ')' ? n + 2 : -EINVAL;
665 }
666 }
667
668 return -EINVAL;
669 }
670
671 /* Parses the string representation of datapath actions, in the format output
672 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
673 * value. On success, the ODP actions are appended to 'actions' as a series of
674 * Netlink attributes. On failure, no data is appended to 'actions'. Either
675 * way, 'actions''s data might be reallocated. */
676 int
677 odp_actions_from_string(const char *s, const struct simap *port_names,
678 struct ofpbuf *actions)
679 {
680 size_t old_size;
681
682 if (!strcasecmp(s, "drop")) {
683 return 0;
684 }
685
686 old_size = actions->size;
687 for (;;) {
688 int retval;
689
690 s += strspn(s, delimiters);
691 if (!*s) {
692 return 0;
693 }
694
695 retval = parse_odp_action(s, port_names, actions);
696 if (retval < 0 || !strchr(delimiters, s[retval])) {
697 actions->size = old_size;
698 return -retval;
699 }
700 s += retval;
701 }
702
703 return 0;
704 }
705 \f
706 /* Returns the correct length of the payload for a flow key attribute of the
707 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
708 * is variable length. */
709 static int
710 odp_flow_key_attr_len(uint16_t type)
711 {
712 if (type > OVS_KEY_ATTR_MAX) {
713 return -1;
714 }
715
716 switch ((enum ovs_key_attr) type) {
717 case OVS_KEY_ATTR_ENCAP: return -2;
718 case OVS_KEY_ATTR_PRIORITY: return 4;
719 case OVS_KEY_ATTR_SKB_MARK: return 4;
720 case OVS_KEY_ATTR_TUNNEL: return -2;
721 case OVS_KEY_ATTR_IN_PORT: return 4;
722 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
723 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
724 case OVS_KEY_ATTR_ETHERTYPE: return 2;
725 case OVS_KEY_ATTR_MPLS: return sizeof(struct ovs_key_mpls);
726 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
727 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
728 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
729 case OVS_KEY_ATTR_TCP_FLAGS: return 2;
730 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
731 case OVS_KEY_ATTR_SCTP: return sizeof(struct ovs_key_sctp);
732 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
733 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
734 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
735 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
736
737 case OVS_KEY_ATTR_UNSPEC:
738 case __OVS_KEY_ATTR_MAX:
739 return -1;
740 }
741
742 return -1;
743 }
744
745 static void
746 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
747 {
748 size_t len = nl_attr_get_size(a);
749 if (len) {
750 const uint8_t *unspec;
751 unsigned int i;
752
753 unspec = nl_attr_get(a);
754 for (i = 0; i < len; i++) {
755 if (i) {
756 ds_put_char(ds, ' ');
757 }
758 ds_put_format(ds, "%02x", unspec[i]);
759 }
760 }
761 }
762
763 static const char *
764 ovs_frag_type_to_string(enum ovs_frag_type type)
765 {
766 switch (type) {
767 case OVS_FRAG_TYPE_NONE:
768 return "no";
769 case OVS_FRAG_TYPE_FIRST:
770 return "first";
771 case OVS_FRAG_TYPE_LATER:
772 return "later";
773 case __OVS_FRAG_TYPE_MAX:
774 default:
775 return "<error>";
776 }
777 }
778
779 static int
780 tunnel_key_attr_len(int type)
781 {
782 switch (type) {
783 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
784 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
785 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
786 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
787 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
788 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
789 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
790 case __OVS_TUNNEL_KEY_ATTR_MAX:
791 return -1;
792 }
793 return -1;
794 }
795
796 enum odp_key_fitness
797 odp_tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
798 {
799 unsigned int left;
800 const struct nlattr *a;
801 bool ttl = false;
802 bool unknown = false;
803
804 NL_NESTED_FOR_EACH(a, left, attr) {
805 uint16_t type = nl_attr_type(a);
806 size_t len = nl_attr_get_size(a);
807 int expected_len = tunnel_key_attr_len(type);
808
809 if (len != expected_len && expected_len >= 0) {
810 return ODP_FIT_ERROR;
811 }
812
813 switch (type) {
814 case OVS_TUNNEL_KEY_ATTR_ID:
815 tun->tun_id = nl_attr_get_be64(a);
816 tun->flags |= FLOW_TNL_F_KEY;
817 break;
818 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
819 tun->ip_src = nl_attr_get_be32(a);
820 break;
821 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
822 tun->ip_dst = nl_attr_get_be32(a);
823 break;
824 case OVS_TUNNEL_KEY_ATTR_TOS:
825 tun->ip_tos = nl_attr_get_u8(a);
826 break;
827 case OVS_TUNNEL_KEY_ATTR_TTL:
828 tun->ip_ttl = nl_attr_get_u8(a);
829 ttl = true;
830 break;
831 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
832 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
833 break;
834 case OVS_TUNNEL_KEY_ATTR_CSUM:
835 tun->flags |= FLOW_TNL_F_CSUM;
836 break;
837 default:
838 /* Allow this to show up as unexpected, if there are unknown
839 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
840 unknown = true;
841 break;
842 }
843 }
844
845 if (!ttl) {
846 return ODP_FIT_ERROR;
847 }
848 if (unknown) {
849 return ODP_FIT_TOO_MUCH;
850 }
851 return ODP_FIT_PERFECT;
852 }
853
854 static void
855 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
856 {
857 size_t tun_key_ofs;
858
859 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
860
861 if (tun_key->flags & FLOW_TNL_F_KEY) {
862 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
863 }
864 if (tun_key->ip_src) {
865 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
866 }
867 if (tun_key->ip_dst) {
868 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
869 }
870 if (tun_key->ip_tos) {
871 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
872 }
873 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
874 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
875 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
876 }
877 if (tun_key->flags & FLOW_TNL_F_CSUM) {
878 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
879 }
880
881 nl_msg_end_nested(a, tun_key_ofs);
882 }
883
884 static bool
885 odp_mask_attr_is_wildcard(const struct nlattr *ma)
886 {
887 return is_all_zeros(nl_attr_get(ma), nl_attr_get_size(ma));
888 }
889
890 static bool
891 odp_mask_attr_is_exact(const struct nlattr *ma)
892 {
893 bool is_exact = false;
894 enum ovs_key_attr attr = nl_attr_type(ma);
895
896 if (attr == OVS_KEY_ATTR_TUNNEL) {
897 /* XXX this is a hack for now. Should change
898 * the exact match dection to per field
899 * instead of per attribute.
900 */
901 struct flow_tnl tun_mask;
902 memset(&tun_mask, 0, sizeof tun_mask);
903 odp_tun_key_from_attr(ma, &tun_mask);
904 if (tun_mask.flags == (FLOW_TNL_F_KEY
905 | FLOW_TNL_F_DONT_FRAGMENT
906 | FLOW_TNL_F_CSUM)) {
907 /* The flags are exact match, check the remaining fields. */
908 tun_mask.flags = 0xffff;
909 is_exact = is_all_ones((uint8_t *)&tun_mask,
910 offsetof(struct flow_tnl, ip_ttl));
911 }
912 } else {
913 is_exact = is_all_ones(nl_attr_get(ma), nl_attr_get_size(ma));
914 }
915
916 return is_exact;
917 }
918
919 void
920 odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no,
921 char *port_name)
922 {
923 struct odp_portno_names *odp_portno_names;
924
925 odp_portno_names = xmalloc(sizeof *odp_portno_names);
926 odp_portno_names->port_no = port_no;
927 odp_portno_names->name = xstrdup(port_name);
928 hmap_insert(portno_names, &odp_portno_names->hmap_node,
929 hash_odp_port(port_no));
930 }
931
932 static char *
933 odp_portno_names_get(const struct hmap *portno_names, odp_port_t port_no)
934 {
935 struct odp_portno_names *odp_portno_names;
936
937 HMAP_FOR_EACH_IN_BUCKET (odp_portno_names, hmap_node,
938 hash_odp_port(port_no), portno_names) {
939 if (odp_portno_names->port_no == port_no) {
940 return odp_portno_names->name;
941 }
942 }
943 return NULL;
944 }
945
946 void
947 odp_portno_names_destroy(struct hmap *portno_names)
948 {
949 struct odp_portno_names *odp_portno_names, *odp_portno_names_next;
950 HMAP_FOR_EACH_SAFE (odp_portno_names, odp_portno_names_next,
951 hmap_node, portno_names) {
952 hmap_remove(portno_names, &odp_portno_names->hmap_node);
953 free(odp_portno_names->name);
954 free(odp_portno_names);
955 }
956 }
957
958 static void
959 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
960 const struct hmap *portno_names, struct ds *ds,
961 bool verbose)
962 {
963 struct flow_tnl tun_key;
964 enum ovs_key_attr attr = nl_attr_type(a);
965 char namebuf[OVS_KEY_ATTR_BUFSIZE];
966 int expected_len;
967 bool is_exact;
968
969 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
970
971 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
972
973 {
974 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
975 if (expected_len != -2) {
976 bool bad_key_len = nl_attr_get_size(a) != expected_len;
977 bool bad_mask_len = ma && nl_attr_get_size(a) != expected_len;
978
979 if (bad_key_len || bad_mask_len) {
980 if (bad_key_len) {
981 ds_put_format(ds, "(bad key length %"PRIuSIZE", expected %d)(",
982 nl_attr_get_size(a),
983 odp_flow_key_attr_len(nl_attr_type(a)));
984 }
985 format_generic_odp_key(a, ds);
986 if (bad_mask_len) {
987 ds_put_char(ds, '/');
988 ds_put_format(ds, "(bad mask length %"PRIuSIZE", expected %d)(",
989 nl_attr_get_size(ma),
990 odp_flow_key_attr_len(nl_attr_type(ma)));
991 }
992 format_generic_odp_key(ma, ds);
993 ds_put_char(ds, ')');
994 return;
995 }
996 }
997 }
998
999 ds_put_char(ds, '(');
1000 switch (attr) {
1001 case OVS_KEY_ATTR_ENCAP:
1002 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
1003 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
1004 nl_attr_get(ma), nl_attr_get_size(ma), NULL, ds,
1005 verbose);
1006 } else if (nl_attr_get_size(a)) {
1007 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, NULL,
1008 ds, verbose);
1009 }
1010 break;
1011
1012 case OVS_KEY_ATTR_PRIORITY:
1013 case OVS_KEY_ATTR_SKB_MARK:
1014 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
1015 if (!is_exact) {
1016 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1017 }
1018 break;
1019
1020 case OVS_KEY_ATTR_TUNNEL:
1021 memset(&tun_key, 0, sizeof tun_key);
1022 if (odp_tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
1023 ds_put_format(ds, "error");
1024 } else if (!is_exact) {
1025 struct flow_tnl tun_mask;
1026
1027 memset(&tun_mask, 0, sizeof tun_mask);
1028 odp_tun_key_from_attr(ma, &tun_mask);
1029 ds_put_format(ds, "tun_id=%#"PRIx64"/%#"PRIx64
1030 ",src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1031 ",tos=%#"PRIx8"/%#"PRIx8",ttl=%"PRIu8"/%#"PRIx8
1032 ",flags(",
1033 ntohll(tun_key.tun_id), ntohll(tun_mask.tun_id),
1034 IP_ARGS(tun_key.ip_src), IP_ARGS(tun_mask.ip_src),
1035 IP_ARGS(tun_key.ip_dst), IP_ARGS(tun_mask.ip_dst),
1036 tun_key.ip_tos, tun_mask.ip_tos,
1037 tun_key.ip_ttl, tun_mask.ip_ttl);
1038
1039 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1040
1041 /* XXX This code is correct, but enabling it would break the unit
1042 test. Disable it for now until the input parser is fixed.
1043
1044 ds_put_char(ds, '/');
1045 format_flags(ds, flow_tun_flag_to_string, tun_mask.flags, ',');
1046 */
1047 ds_put_char(ds, ')');
1048 } else {
1049 ds_put_format(ds, "tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
1050 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
1051 ntohll(tun_key.tun_id),
1052 IP_ARGS(tun_key.ip_src),
1053 IP_ARGS(tun_key.ip_dst),
1054 tun_key.ip_tos, tun_key.ip_ttl);
1055
1056 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1057 ds_put_char(ds, ')');
1058 }
1059 break;
1060
1061 case OVS_KEY_ATTR_IN_PORT:
1062 if (portno_names && verbose && is_exact) {
1063 char *name = odp_portno_names_get(portno_names,
1064 u32_to_odp(nl_attr_get_u32(a)));
1065 if (name) {
1066 ds_put_format(ds, "%s", name);
1067 } else {
1068 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1069 }
1070 } else {
1071 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1072 if (!is_exact) {
1073 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1074 }
1075 }
1076 break;
1077
1078 case OVS_KEY_ATTR_ETHERNET:
1079 if (!is_exact) {
1080 const struct ovs_key_ethernet *eth_mask = nl_attr_get(ma);
1081 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1082
1083 ds_put_format(ds, "src="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1084 ",dst="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1085 ETH_ADDR_ARGS(eth_key->eth_src),
1086 ETH_ADDR_ARGS(eth_mask->eth_src),
1087 ETH_ADDR_ARGS(eth_key->eth_dst),
1088 ETH_ADDR_ARGS(eth_mask->eth_dst));
1089 } else {
1090 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1091
1092 ds_put_format(ds, "src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT,
1093 ETH_ADDR_ARGS(eth_key->eth_src),
1094 ETH_ADDR_ARGS(eth_key->eth_dst));
1095 }
1096 break;
1097
1098 case OVS_KEY_ATTR_VLAN:
1099 {
1100 ovs_be16 vlan_tci = nl_attr_get_be16(a);
1101 if (!is_exact) {
1102 ovs_be16 mask = nl_attr_get_be16(ma);
1103 ds_put_format(ds, "vid=%"PRIu16"/0x%"PRIx16",pcp=%d/0x%x,cfi=%d/%d",
1104 vlan_tci_to_vid(vlan_tci),
1105 vlan_tci_to_vid(mask),
1106 vlan_tci_to_pcp(vlan_tci),
1107 vlan_tci_to_pcp(mask),
1108 vlan_tci_to_cfi(vlan_tci),
1109 vlan_tci_to_cfi(mask));
1110 } else {
1111 format_vlan_tci(ds, vlan_tci);
1112 }
1113 }
1114 break;
1115
1116 case OVS_KEY_ATTR_MPLS: {
1117 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
1118 const struct ovs_key_mpls *mpls_mask = NULL;
1119 if (!is_exact) {
1120 mpls_mask = nl_attr_get(ma);
1121 }
1122 format_mpls(ds, mpls_key, mpls_mask);
1123 break;
1124 }
1125
1126 case OVS_KEY_ATTR_ETHERTYPE:
1127 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
1128 if (!is_exact) {
1129 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
1130 }
1131 break;
1132
1133 case OVS_KEY_ATTR_IPV4:
1134 if (!is_exact) {
1135 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1136 const struct ovs_key_ipv4 *ipv4_mask = nl_attr_get(ma);
1137
1138 ds_put_format(ds, "src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1139 ",proto=%"PRIu8"/%#"PRIx8",tos=%#"PRIx8"/%#"PRIx8
1140 ",ttl=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1141 IP_ARGS(ipv4_key->ipv4_src),
1142 IP_ARGS(ipv4_mask->ipv4_src),
1143 IP_ARGS(ipv4_key->ipv4_dst),
1144 IP_ARGS(ipv4_mask->ipv4_dst),
1145 ipv4_key->ipv4_proto, ipv4_mask->ipv4_proto,
1146 ipv4_key->ipv4_tos, ipv4_mask->ipv4_tos,
1147 ipv4_key->ipv4_ttl, ipv4_mask->ipv4_ttl,
1148 ovs_frag_type_to_string(ipv4_key->ipv4_frag),
1149 ipv4_mask->ipv4_frag);
1150 } else {
1151 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1152
1153 ds_put_format(ds, "src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
1154 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s",
1155 IP_ARGS(ipv4_key->ipv4_src),
1156 IP_ARGS(ipv4_key->ipv4_dst),
1157 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
1158 ipv4_key->ipv4_ttl,
1159 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
1160 }
1161 break;
1162
1163 case OVS_KEY_ATTR_IPV6:
1164 if (!is_exact) {
1165 const struct ovs_key_ipv6 *ipv6_key, *ipv6_mask;
1166 char src_str[INET6_ADDRSTRLEN];
1167 char dst_str[INET6_ADDRSTRLEN];
1168 char src_mask[INET6_ADDRSTRLEN];
1169 char dst_mask[INET6_ADDRSTRLEN];
1170
1171 ipv6_key = nl_attr_get(a);
1172 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1173 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1174
1175 ipv6_mask = nl_attr_get(ma);
1176 inet_ntop(AF_INET6, ipv6_mask->ipv6_src, src_mask, sizeof src_mask);
1177 inet_ntop(AF_INET6, ipv6_mask->ipv6_dst, dst_mask, sizeof dst_mask);
1178
1179 ds_put_format(ds, "src=%s/%s,dst=%s/%s,label=%#"PRIx32"/%#"PRIx32
1180 ",proto=%"PRIu8"/%#"PRIx8",tclass=%#"PRIx8"/%#"PRIx8
1181 ",hlimit=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1182 src_str, src_mask, dst_str, dst_mask,
1183 ntohl(ipv6_key->ipv6_label),
1184 ntohl(ipv6_mask->ipv6_label),
1185 ipv6_key->ipv6_proto, ipv6_mask->ipv6_proto,
1186 ipv6_key->ipv6_tclass, ipv6_mask->ipv6_tclass,
1187 ipv6_key->ipv6_hlimit, ipv6_mask->ipv6_hlimit,
1188 ovs_frag_type_to_string(ipv6_key->ipv6_frag),
1189 ipv6_mask->ipv6_frag);
1190 } else {
1191 const struct ovs_key_ipv6 *ipv6_key;
1192 char src_str[INET6_ADDRSTRLEN];
1193 char dst_str[INET6_ADDRSTRLEN];
1194
1195 ipv6_key = nl_attr_get(a);
1196 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1197 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1198
1199 ds_put_format(ds, "src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
1200 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s",
1201 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
1202 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
1203 ipv6_key->ipv6_hlimit,
1204 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
1205 }
1206 break;
1207
1208 case OVS_KEY_ATTR_TCP:
1209 if (!is_exact) {
1210 const struct ovs_key_tcp *tcp_mask = nl_attr_get(ma);
1211 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1212
1213 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1214 ",dst=%"PRIu16"/%#"PRIx16,
1215 ntohs(tcp_key->tcp_src), ntohs(tcp_mask->tcp_src),
1216 ntohs(tcp_key->tcp_dst), ntohs(tcp_mask->tcp_dst));
1217 } else {
1218 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1219
1220 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1221 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
1222 }
1223 break;
1224
1225 case OVS_KEY_ATTR_TCP_FLAGS:
1226 ds_put_format(ds, "0x%03"PRIx16, ntohs(nl_attr_get_be16(a)));
1227 if (!is_exact) {
1228 ds_put_format(ds, "/0x%03"PRIx16, ntohs(nl_attr_get_be16(ma)));
1229 }
1230 break;
1231
1232 case OVS_KEY_ATTR_UDP:
1233 if (!is_exact) {
1234 const struct ovs_key_udp *udp_mask = nl_attr_get(ma);
1235 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1236
1237 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1238 ",dst=%"PRIu16"/%#"PRIx16,
1239 ntohs(udp_key->udp_src), ntohs(udp_mask->udp_src),
1240 ntohs(udp_key->udp_dst), ntohs(udp_mask->udp_dst));
1241 } else {
1242 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1243
1244 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1245 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
1246 }
1247 break;
1248
1249 case OVS_KEY_ATTR_SCTP:
1250 if (ma) {
1251 const struct ovs_key_sctp *sctp_mask = nl_attr_get(ma);
1252 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1253
1254 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1255 ",dst=%"PRIu16"/%#"PRIx16,
1256 ntohs(sctp_key->sctp_src), ntohs(sctp_mask->sctp_src),
1257 ntohs(sctp_key->sctp_dst), ntohs(sctp_mask->sctp_dst));
1258 } else {
1259 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1260
1261 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
1262 ntohs(sctp_key->sctp_src), ntohs(sctp_key->sctp_dst));
1263 }
1264 break;
1265
1266 case OVS_KEY_ATTR_ICMP:
1267 if (!is_exact) {
1268 const struct ovs_key_icmp *icmp_mask = nl_attr_get(ma);
1269 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1270
1271 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1272 icmp_key->icmp_type, icmp_mask->icmp_type,
1273 icmp_key->icmp_code, icmp_mask->icmp_code);
1274 } else {
1275 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1276
1277 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1278 icmp_key->icmp_type, icmp_key->icmp_code);
1279 }
1280 break;
1281
1282 case OVS_KEY_ATTR_ICMPV6:
1283 if (!is_exact) {
1284 const struct ovs_key_icmpv6 *icmpv6_mask = nl_attr_get(ma);
1285 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1286
1287 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1288 icmpv6_key->icmpv6_type, icmpv6_mask->icmpv6_type,
1289 icmpv6_key->icmpv6_code, icmpv6_mask->icmpv6_code);
1290 } else {
1291 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1292
1293 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1294 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
1295 }
1296 break;
1297
1298 case OVS_KEY_ATTR_ARP:
1299 if (!is_exact) {
1300 const struct ovs_key_arp *arp_mask = nl_attr_get(ma);
1301 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1302
1303 ds_put_format(ds, "sip="IP_FMT"/"IP_FMT",tip="IP_FMT"/"IP_FMT
1304 ",op=%"PRIu16"/%#"PRIx16
1305 ",sha="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1306 ",tha="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1307 IP_ARGS(arp_key->arp_sip),
1308 IP_ARGS(arp_mask->arp_sip),
1309 IP_ARGS(arp_key->arp_tip),
1310 IP_ARGS(arp_mask->arp_tip),
1311 ntohs(arp_key->arp_op), ntohs(arp_mask->arp_op),
1312 ETH_ADDR_ARGS(arp_key->arp_sha),
1313 ETH_ADDR_ARGS(arp_mask->arp_sha),
1314 ETH_ADDR_ARGS(arp_key->arp_tha),
1315 ETH_ADDR_ARGS(arp_mask->arp_tha));
1316 } else {
1317 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1318
1319 ds_put_format(ds, "sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
1320 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT,
1321 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
1322 ntohs(arp_key->arp_op),
1323 ETH_ADDR_ARGS(arp_key->arp_sha),
1324 ETH_ADDR_ARGS(arp_key->arp_tha));
1325 }
1326 break;
1327
1328 case OVS_KEY_ATTR_ND: {
1329 const struct ovs_key_nd *nd_key, *nd_mask = NULL;
1330 char target[INET6_ADDRSTRLEN];
1331
1332 nd_key = nl_attr_get(a);
1333 if (!is_exact) {
1334 nd_mask = nl_attr_get(ma);
1335 }
1336
1337 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
1338 ds_put_format(ds, "target=%s", target);
1339 if (!is_exact) {
1340 inet_ntop(AF_INET6, nd_mask->nd_target, target, sizeof target);
1341 ds_put_format(ds, "/%s", target);
1342 }
1343
1344 if (!eth_addr_is_zero(nd_key->nd_sll)) {
1345 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
1346 ETH_ADDR_ARGS(nd_key->nd_sll));
1347 if (!is_exact) {
1348 ds_put_format(ds, "/"ETH_ADDR_FMT,
1349 ETH_ADDR_ARGS(nd_mask->nd_sll));
1350 }
1351 }
1352 if (!eth_addr_is_zero(nd_key->nd_tll)) {
1353 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
1354 ETH_ADDR_ARGS(nd_key->nd_tll));
1355 if (!is_exact) {
1356 ds_put_format(ds, "/"ETH_ADDR_FMT,
1357 ETH_ADDR_ARGS(nd_mask->nd_tll));
1358 }
1359 }
1360 break;
1361 }
1362
1363 case OVS_KEY_ATTR_UNSPEC:
1364 case __OVS_KEY_ATTR_MAX:
1365 default:
1366 format_generic_odp_key(a, ds);
1367 if (!is_exact) {
1368 ds_put_char(ds, '/');
1369 format_generic_odp_key(ma, ds);
1370 }
1371 break;
1372 }
1373 ds_put_char(ds, ')');
1374 }
1375
1376 static struct nlattr *
1377 generate_all_wildcard_mask(struct ofpbuf *ofp, const struct nlattr *key)
1378 {
1379 const struct nlattr *a;
1380 unsigned int left;
1381 int type = nl_attr_type(key);
1382 int size = nl_attr_get_size(key);
1383
1384 if (odp_flow_key_attr_len(type) >=0) {
1385 nl_msg_put_unspec_zero(ofp, type, size);
1386 } else {
1387 size_t nested_mask;
1388
1389 nested_mask = nl_msg_start_nested(ofp, type);
1390 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
1391 generate_all_wildcard_mask(ofp, nl_attr_get(a));
1392 }
1393 nl_msg_end_nested(ofp, nested_mask);
1394 }
1395
1396 return ofp->base;
1397 }
1398
1399 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1400 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
1401 * 'mask_len' bytes of 'mask' which apply to 'key'. If 'portno_names' is
1402 * non-null and 'verbose' is true, translates odp port number to its name. */
1403 void
1404 odp_flow_format(const struct nlattr *key, size_t key_len,
1405 const struct nlattr *mask, size_t mask_len,
1406 const struct hmap *portno_names, struct ds *ds, bool verbose)
1407 {
1408 if (key_len) {
1409 const struct nlattr *a;
1410 unsigned int left;
1411 bool has_ethtype_key = false;
1412 const struct nlattr *ma = NULL;
1413 struct ofpbuf ofp;
1414 bool first_field = true;
1415
1416 ofpbuf_init(&ofp, 100);
1417 NL_ATTR_FOR_EACH (a, left, key, key_len) {
1418 bool is_nested_attr;
1419 bool is_wildcard = false;
1420 int attr_type = nl_attr_type(a);
1421
1422 if (attr_type == OVS_KEY_ATTR_ETHERTYPE) {
1423 has_ethtype_key = true;
1424 }
1425
1426 is_nested_attr = (odp_flow_key_attr_len(attr_type) == -2);
1427
1428 if (mask && mask_len) {
1429 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
1430 is_wildcard = ma ? odp_mask_attr_is_wildcard(ma) : true;
1431 }
1432
1433 if (verbose || !is_wildcard || is_nested_attr) {
1434 if (is_wildcard && !ma) {
1435 ma = generate_all_wildcard_mask(&ofp, a);
1436 }
1437 if (!first_field) {
1438 ds_put_char(ds, ',');
1439 }
1440 format_odp_key_attr(a, ma, portno_names, ds, verbose);
1441 first_field = false;
1442 }
1443 ofpbuf_clear(&ofp);
1444 }
1445 ofpbuf_uninit(&ofp);
1446
1447 if (left) {
1448 int i;
1449
1450 if (left == key_len) {
1451 ds_put_cstr(ds, "<empty>");
1452 }
1453 ds_put_format(ds, ",***%u leftover bytes*** (", left);
1454 for (i = 0; i < left; i++) {
1455 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
1456 }
1457 ds_put_char(ds, ')');
1458 }
1459 if (!has_ethtype_key) {
1460 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
1461 if (ma) {
1462 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
1463 ntohs(nl_attr_get_be16(ma)));
1464 }
1465 }
1466 } else {
1467 ds_put_cstr(ds, "<empty>");
1468 }
1469 }
1470
1471 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1472 * OVS_KEY_ATTR_* attributes in 'key'. */
1473 void
1474 odp_flow_key_format(const struct nlattr *key,
1475 size_t key_len, struct ds *ds)
1476 {
1477 odp_flow_format(key, key_len, NULL, 0, NULL, ds, true);
1478 }
1479
1480 static void
1481 put_nd(struct ovs_key_nd* nd_key, const uint8_t *nd_sll,
1482 const uint8_t *nd_tll, struct ofpbuf *key)
1483 {
1484 if (nd_sll) {
1485 memcpy(nd_key->nd_sll, nd_sll, ETH_ADDR_LEN);
1486 }
1487
1488 if (nd_tll) {
1489 memcpy(nd_key->nd_tll, nd_tll, ETH_ADDR_LEN);
1490 }
1491
1492 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, nd_key, sizeof *nd_key);
1493 }
1494
1495 static int
1496 put_nd_key(int n, const char *nd_target_s, const uint8_t *nd_sll,
1497 const uint8_t *nd_tll, struct ofpbuf *key)
1498 {
1499 struct ovs_key_nd nd_key;
1500
1501 memset(&nd_key, 0, sizeof nd_key);
1502
1503 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
1504 return -EINVAL;
1505 }
1506
1507 put_nd(&nd_key, nd_sll, nd_tll, key);
1508 return n;
1509 }
1510
1511 static int
1512 put_nd_mask(int n, const char *nd_target_s,
1513 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *mask)
1514 {
1515 struct ovs_key_nd nd_mask;
1516
1517 memset(&nd_mask, 0xff, sizeof nd_mask);
1518
1519 if (strlen(nd_target_s) != 0 &&
1520 inet_pton(AF_INET6, nd_target_s, nd_mask.nd_target) != 1) {
1521 return -EINVAL;
1522 }
1523
1524 put_nd(&nd_mask, nd_sll, nd_tll, mask);
1525 return n;
1526 }
1527
1528 static bool
1529 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1530 {
1531 if (!strcasecmp(s, "no")) {
1532 *type = OVS_FRAG_TYPE_NONE;
1533 } else if (!strcasecmp(s, "first")) {
1534 *type = OVS_FRAG_TYPE_FIRST;
1535 } else if (!strcasecmp(s, "later")) {
1536 *type = OVS_FRAG_TYPE_LATER;
1537 } else {
1538 return false;
1539 }
1540 return true;
1541 }
1542
1543 static ovs_be32
1544 mpls_lse_from_components(int mpls_label, int mpls_tc, int mpls_ttl, int mpls_bos)
1545 {
1546 return (htonl((mpls_label << MPLS_LABEL_SHIFT) |
1547 (mpls_tc << MPLS_TC_SHIFT) |
1548 (mpls_ttl << MPLS_TTL_SHIFT) |
1549 (mpls_bos << MPLS_BOS_SHIFT)));
1550 }
1551
1552 static int
1553 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
1554 struct ofpbuf *key, struct ofpbuf *mask)
1555 {
1556 {
1557 uint32_t priority;
1558 uint32_t priority_mask;
1559 int n = -1;
1560
1561 if (mask && ovs_scan(s, "skb_priority(%"SCNi32"/%"SCNi32")%n",
1562 &priority, &priority_mask, &n)) {
1563 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1564 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, priority_mask);
1565 return n;
1566 } else if (ovs_scan(s, "skb_priority(%"SCNi32")%n", &priority, &n)) {
1567 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1568 if (mask) {
1569 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, UINT32_MAX);
1570 }
1571 return n;
1572 }
1573 }
1574
1575 {
1576 uint32_t mark;
1577 uint32_t mark_mask;
1578 int n = -1;
1579
1580 if (mask && ovs_scan(s, "skb_mark(%"SCNi32"/%"SCNi32")%n", &mark,
1581 &mark_mask, &n)) {
1582 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1583 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, mark_mask);
1584 return n;
1585 } else if (ovs_scan(s, "skb_mark(%"SCNi32")%n", &mark, &n)) {
1586 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1587 if (mask) {
1588 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, UINT32_MAX);
1589 }
1590 return n;
1591 }
1592 }
1593
1594 {
1595 uint64_t tun_id, tun_id_mask;
1596 struct flow_tnl tun_key, tun_key_mask;
1597 int n = -1;
1598
1599 if (mask && ovs_scan(s, "tunnel(tun_id=%"SCNi64"/%"SCNi64","
1600 "src="IP_SCAN_FMT"/"IP_SCAN_FMT",dst="IP_SCAN_FMT
1601 "/"IP_SCAN_FMT",tos=%"SCNi8"/%"SCNi8","
1602 "ttl=%"SCNi8"/%"SCNi8",flags%n",
1603 &tun_id, &tun_id_mask,
1604 IP_SCAN_ARGS(&tun_key.ip_src),
1605 IP_SCAN_ARGS(&tun_key_mask.ip_src),
1606 IP_SCAN_ARGS(&tun_key.ip_dst),
1607 IP_SCAN_ARGS(&tun_key_mask.ip_dst),
1608 &tun_key.ip_tos, &tun_key_mask.ip_tos,
1609 &tun_key.ip_ttl, &tun_key_mask.ip_ttl, &n)) {
1610 int res;
1611 uint32_t flags;
1612
1613 tun_key.tun_id = htonll(tun_id);
1614 tun_key_mask.tun_id = htonll(tun_id_mask);
1615 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1616 tun_key.flags = flags;
1617 tun_key_mask.flags = UINT16_MAX;
1618
1619 if (res < 0) {
1620 return res;
1621 }
1622 n += res;
1623 if (s[n] != ')') {
1624 return -EINVAL;
1625 }
1626 n++;
1627 tun_key_to_attr(key, &tun_key);
1628 if (mask) {
1629 tun_key_to_attr(mask, &tun_key_mask);
1630 }
1631 return n;
1632 } else if (ovs_scan(s, "tunnel(tun_id=%"SCNi64","
1633 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1634 ",tos=%"SCNi8",ttl=%"SCNi8",flags%n", &tun_id,
1635 IP_SCAN_ARGS(&tun_key.ip_src),
1636 IP_SCAN_ARGS(&tun_key.ip_dst),
1637 &tun_key.ip_tos, &tun_key.ip_ttl, &n)) {
1638 int res;
1639 uint32_t flags;
1640
1641 tun_key.tun_id = htonll(tun_id);
1642 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1643 tun_key.flags = flags;
1644
1645 if (res < 0) {
1646 return res;
1647 }
1648 n += res;
1649 if (s[n] != ')') {
1650 return -EINVAL;
1651 }
1652 n++;
1653 tun_key_to_attr(key, &tun_key);
1654
1655 if (mask) {
1656 memset(&tun_key, 0xff, sizeof tun_key);
1657 tun_key_to_attr(mask, &tun_key);
1658 }
1659 return n;
1660 }
1661 }
1662
1663 {
1664 uint32_t in_port;
1665 uint32_t in_port_mask;
1666 int n = -1;
1667
1668 if (mask && ovs_scan(s, "in_port(%"SCNi32"/%"SCNi32")%n",
1669 &in_port, &in_port_mask, &n)) {
1670 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1671 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, in_port_mask);
1672 return n;
1673 } else if (ovs_scan(s, "in_port(%"SCNi32")%n", &in_port, &n)) {
1674 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1675 if (mask) {
1676 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1677 }
1678 return n;
1679 }
1680 }
1681
1682
1683 if (port_names && !strncmp(s, "in_port(", 8)) {
1684 const char *name;
1685 const struct simap_node *node;
1686 int name_len;
1687
1688 name = s + 8;
1689 name_len = strcspn(name, ")");
1690 node = simap_find_len(port_names, name, name_len);
1691 if (node) {
1692 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1693
1694 if (mask) {
1695 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1696 }
1697 return 8 + name_len + 1;
1698 }
1699 }
1700
1701 {
1702 struct ovs_key_ethernet eth_key;
1703 struct ovs_key_ethernet eth_key_mask;
1704 int n = -1;
1705
1706 if (mask && ovs_scan(s,
1707 "eth(src="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
1708 "dst="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
1709 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1710 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_src),
1711 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst),
1712 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_dst), &n)) {
1713 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1714 &eth_key, sizeof eth_key);
1715 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1716 &eth_key_mask, sizeof eth_key_mask);
1717 return n;
1718 } else if (ovs_scan(s, "eth(src="ETH_ADDR_SCAN_FMT","
1719 "dst="ETH_ADDR_SCAN_FMT")%n",
1720 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1721 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n)) {
1722 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1723 &eth_key, sizeof eth_key);
1724
1725 if (mask) {
1726 memset(&eth_key, 0xff, sizeof eth_key);
1727 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1728 &eth_key, sizeof eth_key);
1729 }
1730 return n;
1731 }
1732 }
1733
1734 {
1735 int vid, vid_mask;
1736 int pcp, pcp_mask;
1737 int cfi, cfi_mask;
1738 int n = -1;
1739
1740 if (mask && ovs_scan(s, "vlan(vid=%i/%i,pcp=%i/%i)%n",
1741 &vid, &vid_mask, &pcp, &pcp_mask, &n)) {
1742 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1743 htons((vid << VLAN_VID_SHIFT) |
1744 (pcp << VLAN_PCP_SHIFT) |
1745 VLAN_CFI));
1746 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1747 htons((vid_mask << VLAN_VID_SHIFT) |
1748 (pcp_mask << VLAN_PCP_SHIFT) |
1749 (1 << VLAN_CFI_SHIFT)));
1750 return n;
1751 } else if (ovs_scan(s, "vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)) {
1752 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1753 htons((vid << VLAN_VID_SHIFT) |
1754 (pcp << VLAN_PCP_SHIFT) |
1755 VLAN_CFI));
1756 if (mask) {
1757 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1758 }
1759 return n;
1760 } else if (mask
1761 && ovs_scan(s, "vlan(vid=%i/%i,pcp=%i/%i,cfi=%i/%i)%n",
1762 &vid, &vid_mask, &pcp, &pcp_mask,
1763 &cfi, &cfi_mask, &n)) {
1764 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1765 htons((vid << VLAN_VID_SHIFT) |
1766 (pcp << VLAN_PCP_SHIFT) |
1767 (cfi ? VLAN_CFI : 0)));
1768 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1769 htons((vid_mask << VLAN_VID_SHIFT) |
1770 (pcp_mask << VLAN_PCP_SHIFT) |
1771 (cfi_mask << VLAN_CFI_SHIFT)));
1772 return n;
1773 } else if (ovs_scan(s, "vlan(vid=%i,pcp=%i,cfi=%i)%n",
1774 &vid, &pcp, &cfi, &n)) {
1775 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1776 htons((vid << VLAN_VID_SHIFT) |
1777 (pcp << VLAN_PCP_SHIFT) |
1778 (cfi ? VLAN_CFI : 0)));
1779 if (mask) {
1780 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1781 }
1782 return n;
1783 }
1784 }
1785
1786 {
1787 int eth_type;
1788 int eth_type_mask;
1789 int n = -1;
1790
1791 if (mask && ovs_scan(s, "eth_type(%i/%i)%n",
1792 &eth_type, &eth_type_mask, &n)) {
1793 if (eth_type != 0) {
1794 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1795 }
1796 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type_mask));
1797 return n;
1798 } else if (ovs_scan(s, "eth_type(%i)%n", &eth_type, &n)) {
1799 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1800 if (mask) {
1801 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
1802 }
1803 return n;
1804 }
1805 }
1806
1807 {
1808 int label, tc, ttl, bos;
1809 int label_mask, tc_mask, ttl_mask, bos_mask;
1810 int n = -1;
1811
1812 if (mask && ovs_scan(s, "mpls(label=%i/%i,tc=%i/%i,"
1813 "ttl=%i/%i,bos=%i/%i)%n",
1814 &label, &label_mask, &tc, &tc_mask,
1815 &ttl, &ttl_mask, &bos, &bos_mask, &n)) {
1816 struct ovs_key_mpls *mpls, *mpls_mask;
1817
1818 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1819 sizeof *mpls);
1820 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1821
1822 mpls_mask = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1823 sizeof *mpls_mask);
1824 mpls_mask->mpls_lse = mpls_lse_from_components(
1825 label_mask, tc_mask, ttl_mask, bos_mask);
1826 return n;
1827 } else if (ovs_scan(s, "mpls(label=%i,tc=%i,ttl=%i,bos=%i)%n",
1828 &label, &tc, &ttl, &bos, &n)) {
1829 struct ovs_key_mpls *mpls;
1830
1831 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1832 sizeof *mpls);
1833 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1834 if (mask) {
1835 mpls = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1836 sizeof *mpls);
1837 mpls->mpls_lse = OVS_BE32_MAX;
1838 }
1839 return n;
1840 }
1841 }
1842
1843
1844 {
1845 struct ovs_key_ipv4 ipv4_key;
1846 struct ovs_key_ipv4 ipv4_mask;
1847
1848 char frag[8];
1849 enum ovs_frag_type ipv4_frag;
1850 int n = -1;
1851
1852 if (mask
1853 && ovs_scan(s, "ipv4(src="IP_SCAN_FMT"/"IP_SCAN_FMT","
1854 "dst="IP_SCAN_FMT"/"IP_SCAN_FMT","
1855 "proto=%"SCNi8"/%"SCNi8","
1856 "tos=%"SCNi8"/%"SCNi8","
1857 "ttl=%"SCNi8"/%"SCNi8","
1858 "frag=%7[a-z]/%"SCNi8")%n",
1859 IP_SCAN_ARGS(&ipv4_key.ipv4_src),
1860 IP_SCAN_ARGS(&ipv4_mask.ipv4_src),
1861 IP_SCAN_ARGS(&ipv4_key.ipv4_dst),
1862 IP_SCAN_ARGS(&ipv4_mask.ipv4_dst),
1863 &ipv4_key.ipv4_proto, &ipv4_mask.ipv4_proto,
1864 &ipv4_key.ipv4_tos, &ipv4_mask.ipv4_tos,
1865 &ipv4_key.ipv4_ttl, &ipv4_mask.ipv4_ttl,
1866 frag, &ipv4_mask.ipv4_frag, &n)
1867 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1868 ipv4_key.ipv4_frag = ipv4_frag;
1869 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1870 &ipv4_key, sizeof ipv4_key);
1871
1872 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1873 &ipv4_mask, sizeof ipv4_mask);
1874 return n;
1875 } else if (ovs_scan(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1876 "proto=%"SCNi8",tos=%"SCNi8",ttl=%"SCNi8","
1877 "frag=%7[a-z])%n",
1878 IP_SCAN_ARGS(&ipv4_key.ipv4_src),
1879 IP_SCAN_ARGS(&ipv4_key.ipv4_dst),
1880 &ipv4_key.ipv4_proto,
1881 &ipv4_key.ipv4_tos,
1882 &ipv4_key.ipv4_ttl,
1883 frag, &n) > 0
1884 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1885 ipv4_key.ipv4_frag = ipv4_frag;
1886 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1887 &ipv4_key, sizeof ipv4_key);
1888
1889 if (mask) {
1890 memset(&ipv4_key, 0xff, sizeof ipv4_key);
1891 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1892 &ipv4_key, sizeof ipv4_key);
1893 }
1894 return n;
1895 }
1896 }
1897
1898 {
1899 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1900 char ipv6_src_mask_s[IPV6_SCAN_LEN + 1];
1901 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1902 char ipv6_dst_mask_s[IPV6_SCAN_LEN + 1];
1903 int ipv6_label, ipv6_label_mask;
1904 int ipv6_proto, ipv6_proto_mask;
1905 int ipv6_tclass, ipv6_tclass_mask;
1906 int ipv6_hlimit, ipv6_hlimit_mask;
1907 char frag[8];
1908 enum ovs_frag_type ipv6_frag;
1909 int ipv6_frag_mask;
1910 int n = -1;
1911
1912 if (mask && ovs_scan(s, "ipv6(src="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT",dst="
1913 IPV6_SCAN_FMT"/"IPV6_SCAN_FMT","
1914 "label=%i/%i,proto=%i/%i,tclass=%i/%i,"
1915 "hlimit=%i/%i,frag=%7[a-z]/%i)%n",
1916 ipv6_src_s, ipv6_src_mask_s,
1917 ipv6_dst_s, ipv6_dst_mask_s,
1918 &ipv6_label, &ipv6_label_mask, &ipv6_proto,
1919 &ipv6_proto_mask, &ipv6_tclass, &ipv6_tclass_mask,
1920 &ipv6_hlimit, &ipv6_hlimit_mask, frag,
1921 &ipv6_frag_mask, &n)
1922 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1923 struct ovs_key_ipv6 ipv6_key;
1924 struct ovs_key_ipv6 ipv6_mask;
1925
1926 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1927 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1 ||
1928 inet_pton(AF_INET6, ipv6_src_mask_s, &ipv6_mask.ipv6_src) != 1 ||
1929 inet_pton(AF_INET6, ipv6_dst_mask_s, &ipv6_mask.ipv6_dst) != 1) {
1930 return -EINVAL;
1931 }
1932
1933 ipv6_key.ipv6_label = htonl(ipv6_label);
1934 ipv6_key.ipv6_proto = ipv6_proto;
1935 ipv6_key.ipv6_tclass = ipv6_tclass;
1936 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1937 ipv6_key.ipv6_frag = ipv6_frag;
1938 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1939 &ipv6_key, sizeof ipv6_key);
1940
1941 ipv6_mask.ipv6_label = htonl(ipv6_label_mask);
1942 ipv6_mask.ipv6_proto = ipv6_proto_mask;
1943 ipv6_mask.ipv6_tclass = ipv6_tclass_mask;
1944 ipv6_mask.ipv6_hlimit = ipv6_hlimit_mask;
1945 ipv6_mask.ipv6_frag = ipv6_frag_mask;
1946 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1947 &ipv6_mask, sizeof ipv6_mask);
1948 return n;
1949 } else if (ovs_scan(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1950 "label=%i,proto=%i,tclass=%i,hlimit=%i,"
1951 "frag=%7[a-z])%n",
1952 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1953 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n)
1954 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1955 struct ovs_key_ipv6 ipv6_key;
1956
1957 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1958 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1959 return -EINVAL;
1960 }
1961 ipv6_key.ipv6_label = htonl(ipv6_label);
1962 ipv6_key.ipv6_proto = ipv6_proto;
1963 ipv6_key.ipv6_tclass = ipv6_tclass;
1964 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1965 ipv6_key.ipv6_frag = ipv6_frag;
1966 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1967 &ipv6_key, sizeof ipv6_key);
1968
1969 if (mask) {
1970 memset(&ipv6_key, 0xff, sizeof ipv6_key);
1971 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1972 &ipv6_key, sizeof ipv6_key);
1973 }
1974 return n;
1975 }
1976 }
1977
1978 {
1979 int tcp_src;
1980 int tcp_dst;
1981 int tcp_src_mask;
1982 int tcp_dst_mask;
1983 int n = -1;
1984
1985 if (mask && ovs_scan(s, "tcp(src=%i/%i,dst=%i/%i)%n",
1986 &tcp_src, &tcp_src_mask, &tcp_dst,
1987 &tcp_dst_mask, &n)) {
1988 struct ovs_key_tcp tcp_key;
1989 struct ovs_key_tcp tcp_mask;
1990
1991 tcp_key.tcp_src = htons(tcp_src);
1992 tcp_key.tcp_dst = htons(tcp_dst);
1993 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1994
1995 tcp_mask.tcp_src = htons(tcp_src_mask);
1996 tcp_mask.tcp_dst = htons(tcp_dst_mask);
1997 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
1998 &tcp_mask, sizeof tcp_mask);
1999 return n;
2000 } else if (ovs_scan(s, "tcp(src=%i,dst=%i)%n",
2001 &tcp_src, &tcp_dst, &n)) {
2002 struct ovs_key_tcp tcp_key;
2003
2004 tcp_key.tcp_src = htons(tcp_src);
2005 tcp_key.tcp_dst = htons(tcp_dst);
2006 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2007
2008 if (mask) {
2009 memset(&tcp_key, 0xff, sizeof tcp_key);
2010 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2011 &tcp_key, sizeof tcp_key);
2012 }
2013 return n;
2014 }
2015 }
2016
2017 {
2018 uint16_t tcp_flags, tcp_flags_mask;
2019 int n = -1;
2020
2021 if (mask && ovs_scan(s, "tcp_flags(%"SCNi16"/%"SCNi16")%n",
2022 &tcp_flags, &tcp_flags_mask, &n) > 0 && n > 0) {
2023 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2024 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags_mask));
2025 return n;
2026 } else if (ovs_scan(s, "tcp_flags(%"SCNi16")%n", &tcp_flags, &n)) {
2027 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2028 if (mask) {
2029 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS,
2030 htons(UINT16_MAX));
2031 }
2032 return n;
2033 }
2034 }
2035
2036 {
2037 int udp_src;
2038 int udp_dst;
2039 int udp_src_mask;
2040 int udp_dst_mask;
2041 int n = -1;
2042
2043 if (mask && ovs_scan(s, "udp(src=%i/%i,dst=%i/%i)%n",
2044 &udp_src, &udp_src_mask,
2045 &udp_dst, &udp_dst_mask, &n)) {
2046 struct ovs_key_udp udp_key;
2047 struct ovs_key_udp udp_mask;
2048
2049 udp_key.udp_src = htons(udp_src);
2050 udp_key.udp_dst = htons(udp_dst);
2051 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2052
2053 udp_mask.udp_src = htons(udp_src_mask);
2054 udp_mask.udp_dst = htons(udp_dst_mask);
2055 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP,
2056 &udp_mask, sizeof udp_mask);
2057 return n;
2058 }
2059 if (ovs_scan(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n)) {
2060 struct ovs_key_udp udp_key;
2061
2062 udp_key.udp_src = htons(udp_src);
2063 udp_key.udp_dst = htons(udp_dst);
2064 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2065
2066 if (mask) {
2067 memset(&udp_key, 0xff, sizeof udp_key);
2068 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2069 }
2070 return n;
2071 }
2072 }
2073
2074 {
2075 int sctp_src;
2076 int sctp_dst;
2077 int sctp_src_mask;
2078 int sctp_dst_mask;
2079 int n = -1;
2080
2081 if (mask && ovs_scan(s, "sctp(src=%i/%i,dst=%i/%i)%n",
2082 &sctp_src, &sctp_src_mask,
2083 &sctp_dst, &sctp_dst_mask, &n)) {
2084 struct ovs_key_sctp sctp_key;
2085 struct ovs_key_sctp sctp_mask;
2086
2087 sctp_key.sctp_src = htons(sctp_src);
2088 sctp_key.sctp_dst = htons(sctp_dst);
2089 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2090
2091 sctp_mask.sctp_src = htons(sctp_src_mask);
2092 sctp_mask.sctp_dst = htons(sctp_dst_mask);
2093 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP,
2094 &sctp_mask, sizeof sctp_mask);
2095 return n;
2096 }
2097 if (ovs_scan(s, "sctp(src=%i,dst=%i)%n", &sctp_src, &sctp_dst, &n)) {
2098 struct ovs_key_sctp sctp_key;
2099
2100 sctp_key.sctp_src = htons(sctp_src);
2101 sctp_key.sctp_dst = htons(sctp_dst);
2102 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2103
2104 if (mask) {
2105 memset(&sctp_key, 0xff, sizeof sctp_key);
2106 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2107 }
2108 return n;
2109 }
2110 }
2111
2112 {
2113 struct ovs_key_icmp icmp_key;
2114 struct ovs_key_icmp icmp_mask;
2115 int n = -1;
2116
2117 if (mask && ovs_scan(s, "icmp(type=%"SCNi8"/%"SCNi8","
2118 "code=%"SCNi8"/%"SCNi8")%n",
2119 &icmp_key.icmp_type, &icmp_mask.icmp_type,
2120 &icmp_key.icmp_code, &icmp_mask.icmp_code, &n)) {
2121 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2122 &icmp_key, sizeof icmp_key);
2123 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP,
2124 &icmp_mask, sizeof icmp_mask);
2125 return n;
2126 } else if (ovs_scan(s, "icmp(type=%"SCNi8",code=%"SCNi8")%n",
2127 &icmp_key.icmp_type, &icmp_key.icmp_code, &n)) {
2128 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2129 &icmp_key, sizeof icmp_key);
2130 if (mask) {
2131 memset(&icmp_key, 0xff, sizeof icmp_key);
2132 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP, &icmp_key,
2133 sizeof icmp_key);
2134 }
2135 return n;
2136 }
2137 }
2138
2139 {
2140 struct ovs_key_icmpv6 icmpv6_key;
2141 struct ovs_key_icmpv6 icmpv6_mask;
2142 int n = -1;
2143
2144 if (mask && ovs_scan(s, "icmpv6(type=%"SCNi8"/%"SCNi8","
2145 "code=%"SCNi8"/%"SCNi8")%n",
2146 &icmpv6_key.icmpv6_type, &icmpv6_mask.icmpv6_type,
2147 &icmpv6_key.icmpv6_code, &icmpv6_mask.icmpv6_code,
2148 &n)) {
2149 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2150 &icmpv6_key, sizeof icmpv6_key);
2151 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_mask,
2152 sizeof icmpv6_mask);
2153 return n;
2154 } else if (ovs_scan(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
2155 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,
2156 &n)) {
2157 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2158 &icmpv6_key, sizeof icmpv6_key);
2159
2160 if (mask) {
2161 memset(&icmpv6_key, 0xff, sizeof icmpv6_key);
2162 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_key,
2163 sizeof icmpv6_key);
2164 }
2165 return n;
2166 }
2167 }
2168
2169 {
2170 struct ovs_key_arp arp_key;
2171 struct ovs_key_arp arp_mask;
2172 uint16_t arp_op, arp_op_mask;
2173 int n = -1;
2174
2175 if (mask && ovs_scan(s, "arp(sip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2176 "tip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2177 "op=%"SCNi16"/%"SCNi16","
2178 "sha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2179 "tha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2180 IP_SCAN_ARGS(&arp_key.arp_sip),
2181 IP_SCAN_ARGS(&arp_mask.arp_sip),
2182 IP_SCAN_ARGS(&arp_key.arp_tip),
2183 IP_SCAN_ARGS(&arp_mask.arp_tip),
2184 &arp_op, &arp_op_mask,
2185 ETH_ADDR_SCAN_ARGS(arp_key.arp_sha),
2186 ETH_ADDR_SCAN_ARGS(arp_mask.arp_sha),
2187 ETH_ADDR_SCAN_ARGS(arp_key.arp_tha),
2188 ETH_ADDR_SCAN_ARGS(arp_mask.arp_tha), &n)) {
2189 arp_key.arp_op = htons(arp_op);
2190 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2191 arp_mask.arp_op = htons(arp_op_mask);
2192 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2193 &arp_mask, sizeof arp_mask);
2194 return n;
2195 } else if (ovs_scan(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
2196 "op=%"SCNi16",sha="ETH_ADDR_SCAN_FMT","
2197 "tha="ETH_ADDR_SCAN_FMT")%n",
2198 IP_SCAN_ARGS(&arp_key.arp_sip),
2199 IP_SCAN_ARGS(&arp_key.arp_tip),
2200 &arp_op,
2201 ETH_ADDR_SCAN_ARGS(arp_key.arp_sha),
2202 ETH_ADDR_SCAN_ARGS(arp_key.arp_tha), &n)) {
2203 arp_key.arp_op = htons(arp_op);
2204 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2205
2206 if (mask) {
2207 memset(&arp_key, 0xff, sizeof arp_key);
2208 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2209 &arp_key, sizeof arp_key);
2210 }
2211 return n;
2212 }
2213 }
2214
2215 {
2216 char nd_target_s[IPV6_SCAN_LEN + 1];
2217 char nd_target_mask_s[IPV6_SCAN_LEN + 1];
2218 uint8_t nd_sll[ETH_ADDR_LEN];
2219 uint8_t nd_sll_mask[ETH_ADDR_LEN];
2220 uint8_t nd_tll[ETH_ADDR_LEN];
2221 uint8_t nd_tll_mask[ETH_ADDR_LEN];
2222 int n = -1;
2223
2224 nd_target_mask_s[0] = 0;
2225 memset(nd_sll_mask, 0xff, sizeof nd_sll_mask);
2226 memset(nd_tll_mask, 0xff, sizeof nd_tll_mask);
2227
2228 if (mask && ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT")%n",
2229 nd_target_s, nd_target_mask_s, &n)) {
2230 put_nd_key(n, nd_target_s, NULL, NULL, key);
2231 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2232 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT")%n",
2233 nd_target_s, &n)) {
2234 put_nd_key(n, nd_target_s, NULL, NULL, key);
2235 if (mask) {
2236 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2237 }
2238 } else if (mask &&
2239 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2240 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2241 nd_target_s, nd_target_mask_s,
2242 ETH_ADDR_SCAN_ARGS(nd_sll),
2243 ETH_ADDR_SCAN_ARGS(nd_sll_mask), &n)) {
2244 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2245 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2246 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2247 "sll="ETH_ADDR_SCAN_FMT")%n",
2248 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n)) {
2249 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2250 if (mask) {
2251 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2252 }
2253 } else if (mask &&
2254 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2255 ",tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2256 nd_target_s, nd_target_mask_s,
2257 ETH_ADDR_SCAN_ARGS(nd_tll),
2258 ETH_ADDR_SCAN_ARGS(nd_tll_mask), &n)) {
2259 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2260 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2261 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2262 "tll="ETH_ADDR_SCAN_FMT")%n",
2263 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n)) {
2264 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2265 if (mask) {
2266 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2267 }
2268 } else if (mask &&
2269 ovs_scan(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2270 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2271 "tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2272 nd_target_s, nd_target_mask_s,
2273 ETH_ADDR_SCAN_ARGS(nd_sll),
2274 ETH_ADDR_SCAN_ARGS(nd_sll_mask),
2275 ETH_ADDR_SCAN_ARGS(nd_tll),
2276 ETH_ADDR_SCAN_ARGS(nd_tll_mask),
2277 &n)) {
2278 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2279 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2280 } else if (ovs_scan(s, "nd(target="IPV6_SCAN_FMT","
2281 "sll="ETH_ADDR_SCAN_FMT","
2282 "tll="ETH_ADDR_SCAN_FMT")%n",
2283 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
2284 ETH_ADDR_SCAN_ARGS(nd_tll), &n)) {
2285 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2286 if (mask) {
2287 put_nd_mask(n, nd_target_mask_s,
2288 nd_sll_mask, nd_tll_mask, mask);
2289 }
2290 }
2291
2292 if (n != -1)
2293 return n;
2294
2295 }
2296
2297 if (!strncmp(s, "encap(", 6)) {
2298 const char *start = s;
2299 size_t encap, encap_mask = 0;
2300
2301 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
2302 if (mask) {
2303 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
2304 }
2305
2306 s += 6;
2307 for (;;) {
2308 int retval;
2309
2310 s += strspn(s, ", \t\r\n");
2311 if (!*s) {
2312 return -EINVAL;
2313 } else if (*s == ')') {
2314 break;
2315 }
2316
2317 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2318 if (retval < 0) {
2319 return retval;
2320 }
2321 s += retval;
2322 }
2323 s++;
2324
2325 nl_msg_end_nested(key, encap);
2326 if (mask) {
2327 nl_msg_end_nested(mask, encap_mask);
2328 }
2329
2330 return s - start;
2331 }
2332
2333 return -EINVAL;
2334 }
2335
2336 /* Parses the string representation of a datapath flow key, in the
2337 * format output by odp_flow_key_format(). Returns 0 if successful,
2338 * otherwise a positive errno value. On success, the flow key is
2339 * appended to 'key' as a series of Netlink attributes. On failure, no
2340 * data is appended to 'key'. Either way, 'key''s data might be
2341 * reallocated.
2342 *
2343 * If 'port_names' is nonnull, it points to an simap that maps from a port name
2344 * to a port number. (Port names may be used instead of port numbers in
2345 * in_port.)
2346 *
2347 * On success, the attributes appended to 'key' are individually syntactically
2348 * valid, but they may not be valid as a sequence. 'key' might, for example,
2349 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
2350 int
2351 odp_flow_from_string(const char *s, const struct simap *port_names,
2352 struct ofpbuf *key, struct ofpbuf *mask)
2353 {
2354 const size_t old_size = key->size;
2355 for (;;) {
2356 int retval;
2357
2358 s += strspn(s, delimiters);
2359 if (!*s) {
2360 return 0;
2361 }
2362
2363 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2364 if (retval < 0) {
2365 key->size = old_size;
2366 return -retval;
2367 }
2368 s += retval;
2369 }
2370
2371 return 0;
2372 }
2373
2374 static uint8_t
2375 ovs_to_odp_frag(uint8_t nw_frag)
2376 {
2377 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
2378 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
2379 : OVS_FRAG_TYPE_LATER);
2380 }
2381
2382 static uint8_t
2383 ovs_to_odp_frag_mask(uint8_t nw_frag_mask)
2384 {
2385 uint8_t frag_mask = ~(OVS_FRAG_TYPE_FIRST | OVS_FRAG_TYPE_LATER);
2386
2387 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_ANY) ? OVS_FRAG_TYPE_FIRST : 0;
2388 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_LATER) ? OVS_FRAG_TYPE_LATER : 0;
2389
2390 return frag_mask;
2391 }
2392
2393 static void
2394 odp_flow_key_from_flow__(struct ofpbuf *buf, const struct flow *data,
2395 const struct flow *flow, odp_port_t odp_in_port)
2396 {
2397 bool is_mask;
2398 struct ovs_key_ethernet *eth_key;
2399 size_t encap;
2400
2401 /* We assume that if 'data' and 'flow' are not the same, we should
2402 * treat 'data' as a mask. */
2403 is_mask = (data != flow);
2404
2405 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
2406
2407 if (flow->tunnel.ip_dst || is_mask) {
2408 tun_key_to_attr(buf, &data->tunnel);
2409 }
2410
2411 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->pkt_mark);
2412
2413 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
2414 * is not the magical value "ODPP_NONE". */
2415 if (is_mask || odp_in_port != ODPP_NONE) {
2416 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
2417 }
2418
2419 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
2420 sizeof *eth_key);
2421 memcpy(eth_key->eth_src, data->dl_src, ETH_ADDR_LEN);
2422 memcpy(eth_key->eth_dst, data->dl_dst, ETH_ADDR_LEN);
2423
2424 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
2425 if (is_mask) {
2426 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2427 } else {
2428 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
2429 }
2430 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
2431 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
2432 if (flow->vlan_tci == htons(0)) {
2433 goto unencap;
2434 }
2435 } else {
2436 encap = 0;
2437 }
2438
2439 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2440 /* For backwards compatibility with kernels that don't support
2441 * wildcarding, the following convention is used to encode the
2442 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
2443 *
2444 * key mask matches
2445 * -------- -------- -------
2446 * >0x5ff 0xffff Specified Ethernet II Ethertype.
2447 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
2448 * <none> 0xffff Any non-Ethernet II frame (except valid
2449 * 802.3 SNAP packet with valid eth_type).
2450 */
2451 if (is_mask) {
2452 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2453 }
2454 goto unencap;
2455 }
2456
2457 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2458
2459 if (flow->dl_type == htons(ETH_TYPE_IP)) {
2460 struct ovs_key_ipv4 *ipv4_key;
2461
2462 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
2463 sizeof *ipv4_key);
2464 ipv4_key->ipv4_src = data->nw_src;
2465 ipv4_key->ipv4_dst = data->nw_dst;
2466 ipv4_key->ipv4_proto = data->nw_proto;
2467 ipv4_key->ipv4_tos = data->nw_tos;
2468 ipv4_key->ipv4_ttl = data->nw_ttl;
2469 ipv4_key->ipv4_frag = is_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2470 : ovs_to_odp_frag(data->nw_frag);
2471 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2472 struct ovs_key_ipv6 *ipv6_key;
2473
2474 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
2475 sizeof *ipv6_key);
2476 memcpy(ipv6_key->ipv6_src, &data->ipv6_src, sizeof ipv6_key->ipv6_src);
2477 memcpy(ipv6_key->ipv6_dst, &data->ipv6_dst, sizeof ipv6_key->ipv6_dst);
2478 ipv6_key->ipv6_label = data->ipv6_label;
2479 ipv6_key->ipv6_proto = data->nw_proto;
2480 ipv6_key->ipv6_tclass = data->nw_tos;
2481 ipv6_key->ipv6_hlimit = data->nw_ttl;
2482 ipv6_key->ipv6_frag = is_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2483 : ovs_to_odp_frag(data->nw_frag);
2484 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2485 flow->dl_type == htons(ETH_TYPE_RARP)) {
2486 struct ovs_key_arp *arp_key;
2487
2488 arp_key = nl_msg_put_unspec_zero(buf, OVS_KEY_ATTR_ARP,
2489 sizeof *arp_key);
2490 arp_key->arp_sip = data->nw_src;
2491 arp_key->arp_tip = data->nw_dst;
2492 arp_key->arp_op = htons(data->nw_proto);
2493 memcpy(arp_key->arp_sha, data->arp_sha, ETH_ADDR_LEN);
2494 memcpy(arp_key->arp_tha, data->arp_tha, ETH_ADDR_LEN);
2495 } else if (eth_type_mpls(flow->dl_type)) {
2496 struct ovs_key_mpls *mpls_key;
2497
2498 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
2499 sizeof *mpls_key);
2500 mpls_key->mpls_lse = data->mpls_lse;
2501 }
2502
2503 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2504 if (flow->nw_proto == IPPROTO_TCP) {
2505 struct ovs_key_tcp *tcp_key;
2506
2507 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
2508 sizeof *tcp_key);
2509 tcp_key->tcp_src = data->tp_src;
2510 tcp_key->tcp_dst = data->tp_dst;
2511
2512 if (data->tcp_flags) {
2513 nl_msg_put_be16(buf, OVS_KEY_ATTR_TCP_FLAGS, data->tcp_flags);
2514 }
2515 } else if (flow->nw_proto == IPPROTO_UDP) {
2516 struct ovs_key_udp *udp_key;
2517
2518 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
2519 sizeof *udp_key);
2520 udp_key->udp_src = data->tp_src;
2521 udp_key->udp_dst = data->tp_dst;
2522 } else if (flow->nw_proto == IPPROTO_SCTP) {
2523 struct ovs_key_sctp *sctp_key;
2524
2525 sctp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_SCTP,
2526 sizeof *sctp_key);
2527 sctp_key->sctp_src = data->tp_src;
2528 sctp_key->sctp_dst = data->tp_dst;
2529 } else if (flow->dl_type == htons(ETH_TYPE_IP)
2530 && flow->nw_proto == IPPROTO_ICMP) {
2531 struct ovs_key_icmp *icmp_key;
2532
2533 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
2534 sizeof *icmp_key);
2535 icmp_key->icmp_type = ntohs(data->tp_src);
2536 icmp_key->icmp_code = ntohs(data->tp_dst);
2537 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
2538 && flow->nw_proto == IPPROTO_ICMPV6) {
2539 struct ovs_key_icmpv6 *icmpv6_key;
2540
2541 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
2542 sizeof *icmpv6_key);
2543 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
2544 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
2545
2546 if (flow->tp_dst == htons(0) &&
2547 (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
2548 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) &&
2549 (!is_mask || (data->tp_src == htons(0xffff) &&
2550 data->tp_dst == htons(0xffff)))) {
2551
2552 struct ovs_key_nd *nd_key;
2553
2554 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
2555 sizeof *nd_key);
2556 memcpy(nd_key->nd_target, &data->nd_target,
2557 sizeof nd_key->nd_target);
2558 memcpy(nd_key->nd_sll, data->arp_sha, ETH_ADDR_LEN);
2559 memcpy(nd_key->nd_tll, data->arp_tha, ETH_ADDR_LEN);
2560 }
2561 }
2562 }
2563
2564 unencap:
2565 if (encap) {
2566 nl_msg_end_nested(buf, encap);
2567 }
2568 }
2569
2570 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
2571 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
2572 * number rather than a datapath port number). Instead, if 'odp_in_port'
2573 * is anything other than ODPP_NONE, it is included in 'buf' as the input
2574 * port.
2575 *
2576 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2577 * capable of being expanded to allow for that much space. */
2578 void
2579 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
2580 odp_port_t odp_in_port)
2581 {
2582 odp_flow_key_from_flow__(buf, flow, flow, odp_in_port);
2583 }
2584
2585 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
2586 * 'buf'. 'flow' is used as a template to determine how to interpret
2587 * 'mask'. For example, the 'dl_type' of 'mask' describes the mask, but
2588 * it doesn't indicate whether the other fields should be interpreted as
2589 * ARP, IPv4, IPv6, etc.
2590 *
2591 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2592 * capable of being expanded to allow for that much space. */
2593 void
2594 odp_flow_key_from_mask(struct ofpbuf *buf, const struct flow *mask,
2595 const struct flow *flow, uint32_t odp_in_port_mask)
2596 {
2597 odp_flow_key_from_flow__(buf, mask, flow, u32_to_odp(odp_in_port_mask));
2598 }
2599
2600 /* Generate ODP flow key from the given packet metadata */
2601 void
2602 odp_key_from_pkt_metadata(struct ofpbuf *buf, const struct pkt_metadata *md)
2603 {
2604 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, md->skb_priority);
2605
2606 if (md->tunnel.ip_dst) {
2607 tun_key_to_attr(buf, &md->tunnel);
2608 }
2609
2610 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, md->pkt_mark);
2611
2612 /* Add an ingress port attribute if 'odp_in_port' is not the magical
2613 * value "ODPP_NONE". */
2614 if (md->in_port != ODPP_NONE) {
2615 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, md->in_port);
2616 }
2617 }
2618
2619 /* Generate packet metadata from the given ODP flow key. */
2620 void
2621 odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len,
2622 struct pkt_metadata *md)
2623 {
2624 const struct nlattr *nla;
2625 size_t left;
2626 uint32_t wanted_attrs = 1u << OVS_KEY_ATTR_PRIORITY |
2627 1u << OVS_KEY_ATTR_SKB_MARK | 1u << OVS_KEY_ATTR_TUNNEL |
2628 1u << OVS_KEY_ATTR_IN_PORT;
2629
2630 memset(md, 0, sizeof *md);
2631 md->in_port = ODPP_NONE;
2632
2633 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2634 uint16_t type = nl_attr_type(nla);
2635 size_t len = nl_attr_get_size(nla);
2636 int expected_len = odp_flow_key_attr_len(type);
2637
2638 if (len != expected_len && expected_len >= 0) {
2639 continue;
2640 }
2641
2642 if (type == OVS_KEY_ATTR_PRIORITY) {
2643 md->skb_priority = nl_attr_get_u32(nla);
2644 wanted_attrs &= ~(1u << OVS_KEY_ATTR_PRIORITY);
2645 } else if (type == OVS_KEY_ATTR_SKB_MARK) {
2646 md->pkt_mark = nl_attr_get_u32(nla);
2647 wanted_attrs &= ~(1u << OVS_KEY_ATTR_SKB_MARK);
2648 } else if (type == OVS_KEY_ATTR_TUNNEL) {
2649 enum odp_key_fitness res;
2650
2651 res = odp_tun_key_from_attr(nla, &md->tunnel);
2652 if (res == ODP_FIT_ERROR) {
2653 memset(&md->tunnel, 0, sizeof md->tunnel);
2654 } else if (res == ODP_FIT_PERFECT) {
2655 wanted_attrs &= ~(1u << OVS_KEY_ATTR_TUNNEL);
2656 }
2657 } else if (type == OVS_KEY_ATTR_IN_PORT) {
2658 md->in_port = nl_attr_get_odp_port(nla);
2659 wanted_attrs &= ~(1u << OVS_KEY_ATTR_IN_PORT);
2660 }
2661
2662 if (!wanted_attrs) {
2663 return; /* Have everything. */
2664 }
2665 }
2666 }
2667
2668 uint32_t
2669 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
2670 {
2671 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
2672 return hash_words(ALIGNED_CAST(const uint32_t *, key),
2673 key_len / sizeof(uint32_t), 0);
2674 }
2675
2676 static void
2677 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
2678 uint64_t attrs, int out_of_range_attr,
2679 const struct nlattr *key, size_t key_len)
2680 {
2681 struct ds s;
2682 int i;
2683
2684 if (VLOG_DROP_DBG(rl)) {
2685 return;
2686 }
2687
2688 ds_init(&s);
2689 for (i = 0; i < 64; i++) {
2690 if (attrs & (UINT64_C(1) << i)) {
2691 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2692
2693 ds_put_format(&s, " %s",
2694 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
2695 }
2696 }
2697 if (out_of_range_attr) {
2698 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
2699 }
2700
2701 ds_put_cstr(&s, ": ");
2702 odp_flow_key_format(key, key_len, &s);
2703
2704 VLOG_DBG("%s:%s", title, ds_cstr(&s));
2705 ds_destroy(&s);
2706 }
2707
2708 static bool
2709 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
2710 {
2711 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2712
2713 if (odp_frag > OVS_FRAG_TYPE_LATER) {
2714 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
2715 return false;
2716 }
2717
2718 if (odp_frag != OVS_FRAG_TYPE_NONE) {
2719 flow->nw_frag |= FLOW_NW_FRAG_ANY;
2720 if (odp_frag == OVS_FRAG_TYPE_LATER) {
2721 flow->nw_frag |= FLOW_NW_FRAG_LATER;
2722 }
2723 }
2724 return true;
2725 }
2726
2727 static bool
2728 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
2729 const struct nlattr *attrs[], uint64_t *present_attrsp,
2730 int *out_of_range_attrp)
2731 {
2732 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2733 const struct nlattr *nla;
2734 uint64_t present_attrs;
2735 size_t left;
2736
2737 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
2738 present_attrs = 0;
2739 *out_of_range_attrp = 0;
2740 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2741 uint16_t type = nl_attr_type(nla);
2742 size_t len = nl_attr_get_size(nla);
2743 int expected_len = odp_flow_key_attr_len(type);
2744
2745 if (len != expected_len && expected_len >= 0) {
2746 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2747
2748 VLOG_ERR_RL(&rl, "attribute %s has length %"PRIuSIZE" but should have "
2749 "length %d", ovs_key_attr_to_string(type, namebuf,
2750 sizeof namebuf),
2751 len, expected_len);
2752 return false;
2753 }
2754
2755 if (type > OVS_KEY_ATTR_MAX) {
2756 *out_of_range_attrp = type;
2757 } else {
2758 if (present_attrs & (UINT64_C(1) << type)) {
2759 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2760
2761 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
2762 ovs_key_attr_to_string(type,
2763 namebuf, sizeof namebuf));
2764 return false;
2765 }
2766
2767 present_attrs |= UINT64_C(1) << type;
2768 attrs[type] = nla;
2769 }
2770 }
2771 if (left) {
2772 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
2773 return false;
2774 }
2775
2776 *present_attrsp = present_attrs;
2777 return true;
2778 }
2779
2780 static enum odp_key_fitness
2781 check_expectations(uint64_t present_attrs, int out_of_range_attr,
2782 uint64_t expected_attrs,
2783 const struct nlattr *key, size_t key_len)
2784 {
2785 uint64_t missing_attrs;
2786 uint64_t extra_attrs;
2787
2788 missing_attrs = expected_attrs & ~present_attrs;
2789 if (missing_attrs) {
2790 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2791 log_odp_key_attributes(&rl, "expected but not present",
2792 missing_attrs, 0, key, key_len);
2793 return ODP_FIT_TOO_LITTLE;
2794 }
2795
2796 extra_attrs = present_attrs & ~expected_attrs;
2797 if (extra_attrs || out_of_range_attr) {
2798 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2799 log_odp_key_attributes(&rl, "present but not expected",
2800 extra_attrs, out_of_range_attr, key, key_len);
2801 return ODP_FIT_TOO_MUCH;
2802 }
2803
2804 return ODP_FIT_PERFECT;
2805 }
2806
2807 static bool
2808 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2809 uint64_t present_attrs, uint64_t *expected_attrs,
2810 struct flow *flow, const struct flow *src_flow)
2811 {
2812 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2813 bool is_mask = flow != src_flow;
2814
2815 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
2816 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
2817 if (!is_mask && ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2818 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
2819 ntohs(flow->dl_type));
2820 return false;
2821 }
2822 if (is_mask && ntohs(src_flow->dl_type) < ETH_TYPE_MIN &&
2823 flow->dl_type != htons(0xffff)) {
2824 return false;
2825 }
2826 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
2827 } else {
2828 if (!is_mask) {
2829 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
2830 } else if (ntohs(src_flow->dl_type) < ETH_TYPE_MIN) {
2831 /* See comments in odp_flow_key_from_flow__(). */
2832 VLOG_ERR_RL(&rl, "mask expected for non-Ethernet II frame");
2833 return false;
2834 }
2835 }
2836 return true;
2837 }
2838
2839 static enum odp_key_fitness
2840 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2841 uint64_t present_attrs, int out_of_range_attr,
2842 uint64_t expected_attrs, struct flow *flow,
2843 const struct nlattr *key, size_t key_len,
2844 const struct flow *src_flow)
2845 {
2846 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2847 bool is_mask = src_flow != flow;
2848 const void *check_start = NULL;
2849 size_t check_len = 0;
2850 enum ovs_key_attr expected_bit = 0xff;
2851
2852 if (eth_type_mpls(src_flow->dl_type)) {
2853 if (!is_mask) {
2854 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2855
2856 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS))) {
2857 return ODP_FIT_TOO_LITTLE;
2858 }
2859 flow->mpls_lse = nl_attr_get_be32(attrs[OVS_KEY_ATTR_MPLS]);
2860 } else if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
2861 flow->mpls_lse = nl_attr_get_be32(attrs[OVS_KEY_ATTR_MPLS]);
2862
2863 if (flow->mpls_lse != 0 && flow->dl_type != htons(0xffff)) {
2864 return ODP_FIT_ERROR;
2865 }
2866 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2867 }
2868 goto done;
2869 } else if (src_flow->dl_type == htons(ETH_TYPE_IP)) {
2870 if (!is_mask) {
2871 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
2872 }
2873 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
2874 const struct ovs_key_ipv4 *ipv4_key;
2875
2876 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
2877 flow->nw_src = ipv4_key->ipv4_src;
2878 flow->nw_dst = ipv4_key->ipv4_dst;
2879 flow->nw_proto = ipv4_key->ipv4_proto;
2880 flow->nw_tos = ipv4_key->ipv4_tos;
2881 flow->nw_ttl = ipv4_key->ipv4_ttl;
2882 if (is_mask) {
2883 flow->nw_frag = ipv4_key->ipv4_frag;
2884 check_start = ipv4_key;
2885 check_len = sizeof *ipv4_key;
2886 expected_bit = OVS_KEY_ATTR_IPV4;
2887 } else if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
2888 return ODP_FIT_ERROR;
2889 }
2890 }
2891 } else if (src_flow->dl_type == htons(ETH_TYPE_IPV6)) {
2892 if (!is_mask) {
2893 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
2894 }
2895 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
2896 const struct ovs_key_ipv6 *ipv6_key;
2897
2898 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
2899 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
2900 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
2901 flow->ipv6_label = ipv6_key->ipv6_label;
2902 flow->nw_proto = ipv6_key->ipv6_proto;
2903 flow->nw_tos = ipv6_key->ipv6_tclass;
2904 flow->nw_ttl = ipv6_key->ipv6_hlimit;
2905 if (is_mask) {
2906 flow->nw_frag = ipv6_key->ipv6_frag;
2907 check_start = ipv6_key;
2908 check_len = sizeof *ipv6_key;
2909 expected_bit = OVS_KEY_ATTR_IPV6;
2910 } else if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
2911 return ODP_FIT_ERROR;
2912 }
2913 }
2914 } else if (src_flow->dl_type == htons(ETH_TYPE_ARP) ||
2915 src_flow->dl_type == htons(ETH_TYPE_RARP)) {
2916 if (!is_mask) {
2917 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
2918 }
2919 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
2920 const struct ovs_key_arp *arp_key;
2921
2922 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
2923 flow->nw_src = arp_key->arp_sip;
2924 flow->nw_dst = arp_key->arp_tip;
2925 if (!is_mask && (arp_key->arp_op & htons(0xff00))) {
2926 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
2927 "key", ntohs(arp_key->arp_op));
2928 return ODP_FIT_ERROR;
2929 }
2930 flow->nw_proto = ntohs(arp_key->arp_op);
2931 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
2932 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
2933
2934 if (is_mask) {
2935 check_start = arp_key;
2936 check_len = sizeof *arp_key;
2937 expected_bit = OVS_KEY_ATTR_ARP;
2938 }
2939 }
2940 } else {
2941 goto done;
2942 }
2943 if (check_len > 0) { /* Happens only when 'is_mask'. */
2944 if (!is_all_zeros(check_start, check_len) &&
2945 flow->dl_type != htons(0xffff)) {
2946 return ODP_FIT_ERROR;
2947 } else {
2948 expected_attrs |= UINT64_C(1) << expected_bit;
2949 }
2950 }
2951
2952 expected_bit = OVS_KEY_ATTR_UNSPEC;
2953 if (src_flow->nw_proto == IPPROTO_TCP
2954 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
2955 src_flow->dl_type == htons(ETH_TYPE_IPV6))
2956 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2957 if (!is_mask) {
2958 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
2959 }
2960 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
2961 const struct ovs_key_tcp *tcp_key;
2962
2963 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
2964 flow->tp_src = tcp_key->tcp_src;
2965 flow->tp_dst = tcp_key->tcp_dst;
2966 expected_bit = OVS_KEY_ATTR_TCP;
2967 }
2968 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS)) {
2969 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS;
2970 flow->tcp_flags = nl_attr_get_be16(attrs[OVS_KEY_ATTR_TCP_FLAGS]);
2971 }
2972 } else if (src_flow->nw_proto == IPPROTO_UDP
2973 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
2974 src_flow->dl_type == htons(ETH_TYPE_IPV6))
2975 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2976 if (!is_mask) {
2977 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
2978 }
2979 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
2980 const struct ovs_key_udp *udp_key;
2981
2982 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
2983 flow->tp_src = udp_key->udp_src;
2984 flow->tp_dst = udp_key->udp_dst;
2985 expected_bit = OVS_KEY_ATTR_UDP;
2986 }
2987 } else if (src_flow->nw_proto == IPPROTO_SCTP
2988 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
2989 src_flow->dl_type == htons(ETH_TYPE_IPV6))
2990 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2991 if (!is_mask) {
2992 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SCTP;
2993 }
2994 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SCTP)) {
2995 const struct ovs_key_sctp *sctp_key;
2996
2997 sctp_key = nl_attr_get(attrs[OVS_KEY_ATTR_SCTP]);
2998 flow->tp_src = sctp_key->sctp_src;
2999 flow->tp_dst = sctp_key->sctp_dst;
3000 expected_bit = OVS_KEY_ATTR_SCTP;
3001 }
3002 } else if (src_flow->nw_proto == IPPROTO_ICMP
3003 && src_flow->dl_type == htons(ETH_TYPE_IP)
3004 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3005 if (!is_mask) {
3006 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
3007 }
3008 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
3009 const struct ovs_key_icmp *icmp_key;
3010
3011 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
3012 flow->tp_src = htons(icmp_key->icmp_type);
3013 flow->tp_dst = htons(icmp_key->icmp_code);
3014 expected_bit = OVS_KEY_ATTR_ICMP;
3015 }
3016 } else if (src_flow->nw_proto == IPPROTO_ICMPV6
3017 && src_flow->dl_type == htons(ETH_TYPE_IPV6)
3018 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3019 if (!is_mask) {
3020 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
3021 }
3022 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
3023 const struct ovs_key_icmpv6 *icmpv6_key;
3024
3025 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
3026 flow->tp_src = htons(icmpv6_key->icmpv6_type);
3027 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
3028 expected_bit = OVS_KEY_ATTR_ICMPV6;
3029 if (src_flow->tp_dst == htons(0) &&
3030 (src_flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
3031 src_flow->tp_src == htons(ND_NEIGHBOR_ADVERT))) {
3032 if (!is_mask) {
3033 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3034 }
3035 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
3036 const struct ovs_key_nd *nd_key;
3037
3038 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
3039 memcpy(&flow->nd_target, nd_key->nd_target,
3040 sizeof flow->nd_target);
3041 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
3042 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
3043 if (is_mask) {
3044 if (!is_all_zeros((const uint8_t *) nd_key,
3045 sizeof *nd_key) &&
3046 (flow->tp_src != htons(0xffff) ||
3047 flow->tp_dst != htons(0xffff))) {
3048 return ODP_FIT_ERROR;
3049 } else {
3050 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3051 }
3052 }
3053 }
3054 }
3055 }
3056 }
3057 if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
3058 if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
3059 return ODP_FIT_ERROR;
3060 } else {
3061 expected_attrs |= UINT64_C(1) << expected_bit;
3062 }
3063 }
3064
3065 done:
3066 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
3067 key, key_len);
3068 }
3069
3070 /* Parse 802.1Q header then encapsulated L3 attributes. */
3071 static enum odp_key_fitness
3072 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
3073 uint64_t present_attrs, int out_of_range_attr,
3074 uint64_t expected_attrs, struct flow *flow,
3075 const struct nlattr *key, size_t key_len,
3076 const struct flow *src_flow)
3077 {
3078 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
3079 bool is_mask = src_flow != flow;
3080
3081 const struct nlattr *encap
3082 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
3083 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
3084 enum odp_key_fitness encap_fitness;
3085 enum odp_key_fitness fitness;
3086 ovs_be16 tci;
3087
3088 /* Calculate fitness of outer attributes. */
3089 if (!is_mask) {
3090 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
3091 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
3092 } else {
3093 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3094 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3095 }
3096 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)) {
3097 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_ENCAP);
3098 }
3099 }
3100 fitness = check_expectations(present_attrs, out_of_range_attr,
3101 expected_attrs, key, key_len);
3102
3103 /* Get the VLAN TCI value. */
3104 if (!is_mask && !(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
3105 return ODP_FIT_TOO_LITTLE;
3106 } else {
3107 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
3108 if (!is_mask) {
3109 if (tci == htons(0)) {
3110 /* Corner case for a truncated 802.1Q header. */
3111 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
3112 return ODP_FIT_TOO_MUCH;
3113 }
3114 return fitness;
3115 } else if (!(tci & htons(VLAN_CFI))) {
3116 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
3117 "but CFI bit is not set", ntohs(tci));
3118 return ODP_FIT_ERROR;
3119 }
3120 }
3121 /* Set vlan_tci.
3122 * Remove the TPID from dl_type since it's not the real Ethertype. */
3123 flow->dl_type = htons(0);
3124 flow->vlan_tci = tci;
3125 }
3126
3127 if (is_mask && !(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))) {
3128 return fitness;
3129 }
3130 /* Now parse the encapsulated attributes. */
3131 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
3132 attrs, &present_attrs, &out_of_range_attr)) {
3133 return ODP_FIT_ERROR;
3134 }
3135 expected_attrs = 0;
3136
3137 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow, src_flow)) {
3138 return ODP_FIT_ERROR;
3139 }
3140 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3141 expected_attrs, flow, key, key_len,
3142 src_flow);
3143
3144 /* The overall fitness is the worse of the outer and inner attributes. */
3145 return MAX(fitness, encap_fitness);
3146 }
3147
3148 static enum odp_key_fitness
3149 odp_flow_key_to_flow__(const struct nlattr *key, size_t key_len,
3150 struct flow *flow, const struct flow *src_flow)
3151 {
3152 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
3153 uint64_t expected_attrs;
3154 uint64_t present_attrs;
3155 int out_of_range_attr;
3156 bool is_mask = src_flow != flow;
3157
3158 memset(flow, 0, sizeof *flow);
3159
3160 /* Parse attributes. */
3161 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
3162 &out_of_range_attr)) {
3163 return ODP_FIT_ERROR;
3164 }
3165 expected_attrs = 0;
3166
3167 /* Metadata. */
3168 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
3169 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
3170 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
3171 }
3172
3173 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
3174 flow->pkt_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
3175 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
3176 }
3177
3178 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
3179 enum odp_key_fitness res;
3180
3181 res = odp_tun_key_from_attr(attrs[OVS_KEY_ATTR_TUNNEL], &flow->tunnel);
3182 if (res == ODP_FIT_ERROR) {
3183 return ODP_FIT_ERROR;
3184 } else if (res == ODP_FIT_PERFECT) {
3185 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
3186 }
3187 }
3188
3189 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
3190 flow->in_port.odp_port
3191 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
3192 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
3193 } else if (!is_mask) {
3194 flow->in_port.odp_port = ODPP_NONE;
3195 }
3196
3197 /* Ethernet header. */
3198 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
3199 const struct ovs_key_ethernet *eth_key;
3200
3201 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
3202 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
3203 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
3204 if (is_mask) {
3205 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3206 }
3207 }
3208 if (!is_mask) {
3209 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3210 }
3211
3212 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
3213 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow,
3214 src_flow)) {
3215 return ODP_FIT_ERROR;
3216 }
3217
3218 if ((is_mask && (src_flow->vlan_tci & htons(VLAN_CFI))) ||
3219 (!is_mask && src_flow->dl_type == htons(ETH_TYPE_VLAN))) {
3220 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
3221 expected_attrs, flow, key, key_len, src_flow);
3222 }
3223 if (is_mask) {
3224 flow->vlan_tci = htons(0xffff);
3225 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3226 flow->vlan_tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
3227 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3228 }
3229 }
3230 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3231 expected_attrs, flow, key, key_len, src_flow);
3232 }
3233
3234 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
3235 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
3236 * 'key' fits our expectations for what a flow key should contain.
3237 *
3238 * The 'in_port' will be the datapath's understanding of the port. The
3239 * caller will need to translate with odp_port_to_ofp_port() if the
3240 * OpenFlow port is needed.
3241 *
3242 * This function doesn't take the packet itself as an argument because none of
3243 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
3244 * it is always possible to infer which additional attribute(s) should appear
3245 * by looking at the attributes for lower-level protocols, e.g. if the network
3246 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
3247 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
3248 * must be absent. */
3249 enum odp_key_fitness
3250 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
3251 struct flow *flow)
3252 {
3253 return odp_flow_key_to_flow__(key, key_len, flow, flow);
3254 }
3255
3256 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a mask
3257 * structure in 'mask'. 'flow' must be a previously translated flow
3258 * corresponding to 'mask'. Returns an ODP_FIT_* value that indicates how well
3259 * 'key' fits our expectations for what a flow key should contain. */
3260 enum odp_key_fitness
3261 odp_flow_key_to_mask(const struct nlattr *key, size_t key_len,
3262 struct flow *mask, const struct flow *flow)
3263 {
3264 return odp_flow_key_to_flow__(key, key_len, mask, flow);
3265 }
3266
3267 /* Returns 'fitness' as a string, for use in debug messages. */
3268 const char *
3269 odp_key_fitness_to_string(enum odp_key_fitness fitness)
3270 {
3271 switch (fitness) {
3272 case ODP_FIT_PERFECT:
3273 return "OK";
3274 case ODP_FIT_TOO_MUCH:
3275 return "too_much";
3276 case ODP_FIT_TOO_LITTLE:
3277 return "too_little";
3278 case ODP_FIT_ERROR:
3279 return "error";
3280 default:
3281 return "<unknown>";
3282 }
3283 }
3284
3285 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
3286 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
3287 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
3288 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
3289 * null, then the return value is not meaningful.) */
3290 size_t
3291 odp_put_userspace_action(uint32_t pid,
3292 const void *userdata, size_t userdata_size,
3293 struct ofpbuf *odp_actions)
3294 {
3295 size_t userdata_ofs;
3296 size_t offset;
3297
3298 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
3299 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
3300 if (userdata) {
3301 userdata_ofs = odp_actions->size + NLA_HDRLEN;
3302
3303 /* The OVS kernel module before OVS 1.11 and the upstream Linux kernel
3304 * module before Linux 3.10 required the userdata to be exactly 8 bytes
3305 * long:
3306 *
3307 * - The kernel rejected shorter userdata with -ERANGE.
3308 *
3309 * - The kernel silently dropped userdata beyond the first 8 bytes.
3310 *
3311 * Thus, for maximum compatibility, always put at least 8 bytes. (We
3312 * separately disable features that required more than 8 bytes.) */
3313 memcpy(nl_msg_put_unspec_zero(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
3314 MAX(8, userdata_size)),
3315 userdata, userdata_size);
3316 } else {
3317 userdata_ofs = 0;
3318 }
3319 nl_msg_end_nested(odp_actions, offset);
3320
3321 return userdata_ofs;
3322 }
3323
3324 void
3325 odp_put_tunnel_action(const struct flow_tnl *tunnel,
3326 struct ofpbuf *odp_actions)
3327 {
3328 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3329 tun_key_to_attr(odp_actions, tunnel);
3330 nl_msg_end_nested(odp_actions, offset);
3331 }
3332 \f
3333 /* The commit_odp_actions() function and its helpers. */
3334
3335 static void
3336 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
3337 const void *key, size_t key_size)
3338 {
3339 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3340 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
3341 nl_msg_end_nested(odp_actions, offset);
3342 }
3343
3344 void
3345 odp_put_pkt_mark_action(const uint32_t pkt_mark,
3346 struct ofpbuf *odp_actions)
3347 {
3348 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK, &pkt_mark,
3349 sizeof(pkt_mark));
3350 }
3351
3352 /* If any of the flow key data that ODP actions can modify are different in
3353 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
3354 * 'odp_actions' that change the flow tunneling information in key from
3355 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
3356 * same way. In other words, operates the same as commit_odp_actions(), but
3357 * only on tunneling information. */
3358 void
3359 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
3360 struct ofpbuf *odp_actions)
3361 {
3362 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
3363 if (flow->tunnel.ip_dst) {
3364 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
3365 return;
3366 }
3367 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
3368 odp_put_tunnel_action(&base->tunnel, odp_actions);
3369 }
3370 }
3371
3372 static void
3373 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
3374 struct ofpbuf *odp_actions,
3375 struct flow_wildcards *wc)
3376 {
3377 struct ovs_key_ethernet eth_key;
3378
3379 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
3380 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
3381 return;
3382 }
3383
3384 memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
3385 memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
3386
3387 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
3388 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
3389
3390 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
3391 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
3392
3393 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
3394 &eth_key, sizeof(eth_key));
3395 }
3396
3397 static void
3398 commit_vlan_action(ovs_be16 vlan_tci, struct flow *base,
3399 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3400 {
3401 if (base->vlan_tci == vlan_tci) {
3402 return;
3403 }
3404
3405 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
3406
3407 if (base->vlan_tci & htons(VLAN_CFI)) {
3408 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3409 }
3410
3411 if (vlan_tci & htons(VLAN_CFI)) {
3412 struct ovs_action_push_vlan vlan;
3413
3414 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
3415 vlan.vlan_tci = vlan_tci;
3416 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3417 &vlan, sizeof vlan);
3418 }
3419 base->vlan_tci = vlan_tci;
3420 }
3421
3422 static void
3423 commit_mpls_action(const struct flow *flow, struct flow *base,
3424 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
3425 int *mpls_depth_delta)
3426 {
3427 if (flow->mpls_lse == base->mpls_lse && !*mpls_depth_delta) {
3428 return;
3429 }
3430
3431 memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse);
3432
3433 switch (*mpls_depth_delta) {
3434 case -1:
3435 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, flow->dl_type);
3436 break;
3437 case 1: {
3438 struct ovs_action_push_mpls *mpls;
3439
3440 mpls = nl_msg_put_unspec_zero(odp_actions, OVS_ACTION_ATTR_PUSH_MPLS,
3441 sizeof *mpls);
3442 mpls->mpls_ethertype = flow->dl_type;
3443 mpls->mpls_lse = flow->mpls_lse;
3444 break;
3445 }
3446 case 0: {
3447 struct ovs_key_mpls mpls_key;
3448
3449 mpls_key.mpls_lse = flow->mpls_lse;
3450 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
3451 &mpls_key, sizeof(mpls_key));
3452 break;
3453 }
3454 default:
3455 OVS_NOT_REACHED();
3456 }
3457
3458 base->dl_type = flow->dl_type;
3459 base->mpls_lse = flow->mpls_lse;
3460 *mpls_depth_delta = 0;
3461 }
3462
3463 static void
3464 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
3465 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3466 {
3467 struct ovs_key_ipv4 ipv4_key;
3468
3469 if (base->nw_src == flow->nw_src &&
3470 base->nw_dst == flow->nw_dst &&
3471 base->nw_tos == flow->nw_tos &&
3472 base->nw_ttl == flow->nw_ttl &&
3473 base->nw_frag == flow->nw_frag) {
3474 return;
3475 }
3476
3477 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3478 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3479 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3480 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3481 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3482 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3483
3484 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
3485 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
3486 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
3487 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
3488 ipv4_key.ipv4_proto = base->nw_proto;
3489 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
3490
3491 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
3492 &ipv4_key, sizeof(ipv4_key));
3493 }
3494
3495 static void
3496 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
3497 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3498 {
3499 struct ovs_key_ipv6 ipv6_key;
3500
3501 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
3502 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
3503 base->ipv6_label == flow->ipv6_label &&
3504 base->nw_tos == flow->nw_tos &&
3505 base->nw_ttl == flow->nw_ttl &&
3506 base->nw_frag == flow->nw_frag) {
3507 return;
3508 }
3509
3510 memset(&wc->masks.ipv6_src, 0xff, sizeof wc->masks.ipv6_src);
3511 memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst);
3512 memset(&wc->masks.ipv6_label, 0xff, sizeof wc->masks.ipv6_label);
3513 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3514 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3515 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3516 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3517
3518 base->ipv6_src = flow->ipv6_src;
3519 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
3520 base->ipv6_dst = flow->ipv6_dst;
3521 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
3522
3523 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
3524 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
3525 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
3526 ipv6_key.ipv6_proto = base->nw_proto;
3527 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
3528
3529 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
3530 &ipv6_key, sizeof(ipv6_key));
3531 }
3532
3533 static enum slow_path_reason
3534 commit_set_arp_action(const struct flow *flow, struct flow *base,
3535 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3536 {
3537 struct ovs_key_arp arp_key;
3538
3539 if (base->nw_src == flow->nw_src &&
3540 base->nw_dst == flow->nw_dst &&
3541 base->nw_proto == flow->nw_proto &&
3542 eth_addr_equals(base->arp_sha, flow->arp_sha) &&
3543 eth_addr_equals(base->arp_tha, flow->arp_tha)) {
3544 return 0;
3545 }
3546
3547 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3548 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3549 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3550 memset(&wc->masks.arp_sha, 0xff, sizeof wc->masks.arp_sha);
3551 memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
3552
3553 base->nw_src = flow->nw_src;
3554 base->nw_dst = flow->nw_dst;
3555 base->nw_proto = flow->nw_proto;
3556 memcpy(base->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3557 memcpy(base->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3558
3559 arp_key.arp_sip = base->nw_src;
3560 arp_key.arp_tip = base->nw_dst;
3561 arp_key.arp_op = htons(base->nw_proto);
3562 memcpy(arp_key.arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3563 memcpy(arp_key.arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3564
3565 commit_set_action(odp_actions, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
3566
3567 return SLOW_ACTION;
3568 }
3569
3570 static enum slow_path_reason
3571 commit_set_nw_action(const struct flow *flow, struct flow *base,
3572 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3573 {
3574 /* Check if 'flow' really has an L3 header. */
3575 if (!flow->nw_proto) {
3576 return 0;
3577 }
3578
3579 switch (ntohs(base->dl_type)) {
3580 case ETH_TYPE_IP:
3581 commit_set_ipv4_action(flow, base, odp_actions, wc);
3582 break;
3583
3584 case ETH_TYPE_IPV6:
3585 commit_set_ipv6_action(flow, base, odp_actions, wc);
3586 break;
3587
3588 case ETH_TYPE_ARP:
3589 return commit_set_arp_action(flow, base, odp_actions, wc);
3590 }
3591
3592 return 0;
3593 }
3594
3595 static void
3596 commit_set_port_action(const struct flow *flow, struct flow *base,
3597 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3598 {
3599 if (!is_ip_any(base) || (!base->tp_src && !base->tp_dst)) {
3600 return;
3601 }
3602
3603 if (base->tp_src == flow->tp_src &&
3604 base->tp_dst == flow->tp_dst) {
3605 return;
3606 }
3607
3608 memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
3609 memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
3610
3611 if (flow->nw_proto == IPPROTO_TCP) {
3612 struct ovs_key_tcp port_key;
3613
3614 port_key.tcp_src = base->tp_src = flow->tp_src;
3615 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
3616
3617 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
3618 &port_key, sizeof(port_key));
3619
3620 } else if (flow->nw_proto == IPPROTO_UDP) {
3621 struct ovs_key_udp port_key;
3622
3623 port_key.udp_src = base->tp_src = flow->tp_src;
3624 port_key.udp_dst = base->tp_dst = flow->tp_dst;
3625
3626 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
3627 &port_key, sizeof(port_key));
3628 } else if (flow->nw_proto == IPPROTO_SCTP) {
3629 struct ovs_key_sctp port_key;
3630
3631 port_key.sctp_src = base->tp_src = flow->tp_src;
3632 port_key.sctp_dst = base->tp_dst = flow->tp_dst;
3633
3634 commit_set_action(odp_actions, OVS_KEY_ATTR_SCTP,
3635 &port_key, sizeof(port_key));
3636 }
3637 }
3638
3639 static void
3640 commit_set_priority_action(const struct flow *flow, struct flow *base,
3641 struct ofpbuf *odp_actions,
3642 struct flow_wildcards *wc)
3643 {
3644 if (base->skb_priority == flow->skb_priority) {
3645 return;
3646 }
3647
3648 memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
3649 base->skb_priority = flow->skb_priority;
3650
3651 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
3652 &base->skb_priority, sizeof(base->skb_priority));
3653 }
3654
3655 static void
3656 commit_set_pkt_mark_action(const struct flow *flow, struct flow *base,
3657 struct ofpbuf *odp_actions,
3658 struct flow_wildcards *wc)
3659 {
3660 if (base->pkt_mark == flow->pkt_mark) {
3661 return;
3662 }
3663
3664 memset(&wc->masks.pkt_mark, 0xff, sizeof wc->masks.pkt_mark);
3665 base->pkt_mark = flow->pkt_mark;
3666
3667 odp_put_pkt_mark_action(base->pkt_mark, odp_actions);
3668 }
3669
3670 /* If any of the flow key data that ODP actions can modify are different in
3671 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
3672 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
3673 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
3674 * in addition to this function if needed. Sets fields in 'wc' that are
3675 * used as part of the action.
3676 *
3677 * Returns a reason to force processing the flow's packets into the userspace
3678 * slow path, if there is one, otherwise 0. */
3679 enum slow_path_reason
3680 commit_odp_actions(const struct flow *flow, struct flow *base,
3681 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
3682 int *mpls_depth_delta)
3683 {
3684 enum slow_path_reason slow;
3685
3686 commit_set_ether_addr_action(flow, base, odp_actions, wc);
3687 commit_vlan_action(flow->vlan_tci, base, odp_actions, wc);
3688 slow = commit_set_nw_action(flow, base, odp_actions, wc);
3689 commit_set_port_action(flow, base, odp_actions, wc);
3690 /* Committing MPLS actions should occur after committing nw and port
3691 * actions. This is because committing MPLS actions may alter a packet so
3692 * that it is no longer IP and thus nw and port actions are no longer valid.
3693 */
3694 commit_mpls_action(flow, base, odp_actions, wc, mpls_depth_delta);
3695 commit_set_priority_action(flow, base, odp_actions, wc);
3696 commit_set_pkt_mark_action(flow, base, odp_actions, wc);
3697
3698 return slow;
3699 }
openvswitch packages for PVE