]> git.proxmox.com Git - ovs.git/blob - lib/odp-util.c
projects / ovs.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
ovs-dpctl: Fix mega flow output
[ovs.git] / lib / odp-util.c
1 /*
2 * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <config.h>
18 #include <arpa/inet.h>
19 #include "odp-util.h"
20 #include <errno.h>
21 #include <inttypes.h>
22 #include <math.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include "byte-order.h"
28 #include "coverage.h"
29 #include "dynamic-string.h"
30 #include "flow.h"
31 #include "netlink.h"
32 #include "ofpbuf.h"
33 #include "packets.h"
34 #include "simap.h"
35 #include "timeval.h"
36 #include "util.h"
37 #include "vlog.h"
38
39 VLOG_DEFINE_THIS_MODULE(odp_util);
40
41 /* The interface between userspace and kernel uses an "OVS_*" prefix.
42 * Since this is fairly non-specific for the OVS userspace components,
43 * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
44 * interactions with the datapath.
45 */
46
47 /* The set of characters that may separate one action or one key attribute
48 * from another. */
49 static const char *delimiters = ", \t\r\n";
50
51 static int parse_odp_key_mask_attr(const char *, const struct simap *port_names,
52 struct ofpbuf *, struct ofpbuf *);
53 static void format_odp_key_attr(const struct nlattr *a,
54 const struct nlattr *ma, struct ds *ds);
55
56 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
57 * 'type':
58 *
59 * - For an action whose argument has a fixed length, returned that
60 * nonnegative length in bytes.
61 *
62 * - For an action with a variable-length argument, returns -2.
63 *
64 * - For an invalid 'type', returns -1. */
65 static int
66 odp_action_len(uint16_t type)
67 {
68 if (type > OVS_ACTION_ATTR_MAX) {
69 return -1;
70 }
71
72 switch ((enum ovs_action_attr) type) {
73 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
74 case OVS_ACTION_ATTR_USERSPACE: return -2;
75 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
76 case OVS_ACTION_ATTR_POP_VLAN: return 0;
77 case OVS_ACTION_ATTR_PUSH_MPLS: return sizeof(struct ovs_action_push_mpls);
78 case OVS_ACTION_ATTR_POP_MPLS: return sizeof(ovs_be16);
79 case OVS_ACTION_ATTR_SET: return -2;
80 case OVS_ACTION_ATTR_SAMPLE: return -2;
81
82 case OVS_ACTION_ATTR_UNSPEC:
83 case __OVS_ACTION_ATTR_MAX:
84 return -1;
85 }
86
87 return -1;
88 }
89
90 /* Returns a string form of 'attr'. The return value is either a statically
91 * allocated constant string or the 'bufsize'-byte buffer 'namebuf'. 'bufsize'
92 * should be at least OVS_KEY_ATTR_BUFSIZE. */
93 enum { OVS_KEY_ATTR_BUFSIZE = 3 + INT_STRLEN(unsigned int) + 1 };
94 static const char *
95 ovs_key_attr_to_string(enum ovs_key_attr attr, char *namebuf, size_t bufsize)
96 {
97 switch (attr) {
98 case OVS_KEY_ATTR_UNSPEC: return "unspec";
99 case OVS_KEY_ATTR_ENCAP: return "encap";
100 case OVS_KEY_ATTR_PRIORITY: return "skb_priority";
101 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
102 case OVS_KEY_ATTR_TUNNEL: return "tunnel";
103 case OVS_KEY_ATTR_IN_PORT: return "in_port";
104 case OVS_KEY_ATTR_ETHERNET: return "eth";
105 case OVS_KEY_ATTR_VLAN: return "vlan";
106 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
107 case OVS_KEY_ATTR_IPV4: return "ipv4";
108 case OVS_KEY_ATTR_IPV6: return "ipv6";
109 case OVS_KEY_ATTR_TCP: return "tcp";
110 case OVS_KEY_ATTR_UDP: return "udp";
111 case OVS_KEY_ATTR_ICMP: return "icmp";
112 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
113 case OVS_KEY_ATTR_ARP: return "arp";
114 case OVS_KEY_ATTR_ND: return "nd";
115 case OVS_KEY_ATTR_MPLS: return "mpls";
116
117 case __OVS_KEY_ATTR_MAX:
118 default:
119 snprintf(namebuf, bufsize, "key%u", (unsigned int) attr);
120 return namebuf;
121 }
122 }
123
124 static void
125 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
126 {
127 size_t len = nl_attr_get_size(a);
128
129 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
130 if (len) {
131 const uint8_t *unspec;
132 unsigned int i;
133
134 unspec = nl_attr_get(a);
135 for (i = 0; i < len; i++) {
136 ds_put_char(ds, i ? ' ': '(');
137 ds_put_format(ds, "%02x", unspec[i]);
138 }
139 ds_put_char(ds, ')');
140 }
141 }
142
143 static void
144 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
145 {
146 static const struct nl_policy ovs_sample_policy[] = {
147 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
148 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
149 };
150 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
151 double percentage;
152 const struct nlattr *nla_acts;
153 int len;
154
155 ds_put_cstr(ds, "sample");
156
157 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
158 ds_put_cstr(ds, "(error)");
159 return;
160 }
161
162 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
163 UINT32_MAX;
164
165 ds_put_format(ds, "(sample=%.1f%%,", percentage);
166
167 ds_put_cstr(ds, "actions(");
168 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
169 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
170 format_odp_actions(ds, nla_acts, len);
171 ds_put_format(ds, "))");
172 }
173
174 static const char *
175 slow_path_reason_to_string(enum slow_path_reason reason)
176 {
177 switch (reason) {
178 case SLOW_CFM:
179 return "cfm";
180 case SLOW_LACP:
181 return "lacp";
182 case SLOW_STP:
183 return "stp";
184 case SLOW_BFD:
185 return "bfd";
186 case SLOW_CONTROLLER:
187 return "controller";
188 case __SLOW_MAX:
189 default:
190 return NULL;
191 }
192 }
193
194 static enum slow_path_reason
195 string_to_slow_path_reason(const char *string)
196 {
197 enum slow_path_reason i;
198
199 for (i = 1; i < __SLOW_MAX; i++) {
200 if (!strcmp(string, slow_path_reason_to_string(i))) {
201 return i;
202 }
203 }
204
205 return 0;
206 }
207
208 static int
209 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
210 uint32_t *res)
211 {
212 uint32_t result = 0;
213 int n = 0;
214
215 if (s[n] != '(') {
216 return -EINVAL;
217 }
218 n++;
219
220 while (s[n] != ')') {
221 unsigned long long int flags;
222 uint32_t bit;
223 int n0;
224
225 if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) {
226 n += n0 + (s[n + n0] == ',');
227 result |= flags;
228 continue;
229 }
230
231 for (bit = 1; bit; bit <<= 1) {
232 const char *name = bit_to_string(bit);
233 size_t len;
234
235 if (!name) {
236 continue;
237 }
238
239 len = strlen(name);
240 if (!strncmp(s + n, name, len) &&
241 (s[n + len] == ',' || s[n + len] == ')')) {
242 result |= bit;
243 n += len + (s[n + len] == ',');
244 break;
245 }
246 }
247
248 if (!bit) {
249 return -EINVAL;
250 }
251 }
252 n++;
253
254 *res = result;
255 return n;
256 }
257
258 static void
259 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
260 {
261 static const struct nl_policy ovs_userspace_policy[] = {
262 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
263 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_UNSPEC,
264 .optional = true },
265 };
266 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
267 const struct nlattr *userdata_attr;
268
269 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
270 ds_put_cstr(ds, "userspace(error)");
271 return;
272 }
273
274 ds_put_format(ds, "userspace(pid=%"PRIu32,
275 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
276
277 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
278
279 if (userdata_attr) {
280 const uint8_t *userdata = nl_attr_get(userdata_attr);
281 size_t userdata_len = nl_attr_get_size(userdata_attr);
282 bool userdata_unspec = true;
283 union user_action_cookie cookie;
284
285 if (userdata_len >= sizeof cookie.type
286 && userdata_len <= sizeof cookie) {
287
288 memset(&cookie, 0, sizeof cookie);
289 memcpy(&cookie, userdata, userdata_len);
290
291 userdata_unspec = false;
292
293 if (userdata_len == sizeof cookie.sflow
294 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
295 ds_put_format(ds, ",sFlow("
296 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
297 vlan_tci_to_vid(cookie.sflow.vlan_tci),
298 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
299 cookie.sflow.output);
300 } else if (userdata_len == sizeof cookie.slow_path
301 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
302 const char *reason;
303 reason = slow_path_reason_to_string(cookie.slow_path.reason);
304 reason = reason ? reason : "";
305 ds_put_format(ds, ",slow_path(%s)", reason);
306 } else if (userdata_len == sizeof cookie.flow_sample
307 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
308 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
309 ",collector_set_id=%"PRIu32
310 ",obs_domain_id=%"PRIu32
311 ",obs_point_id=%"PRIu32")",
312 cookie.flow_sample.probability,
313 cookie.flow_sample.collector_set_id,
314 cookie.flow_sample.obs_domain_id,
315 cookie.flow_sample.obs_point_id);
316 } else if (userdata_len == sizeof cookie.ipfix
317 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
318 ds_put_format(ds, ",ipfix");
319 } else {
320 userdata_unspec = true;
321 }
322 }
323
324 if (userdata_unspec) {
325 size_t i;
326 ds_put_format(ds, ",userdata(");
327 for (i = 0; i < userdata_len; i++) {
328 ds_put_format(ds, "%02x", userdata[i]);
329 }
330 ds_put_char(ds, ')');
331 }
332 }
333
334 ds_put_char(ds, ')');
335 }
336
337 static void
338 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
339 {
340 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
341 vlan_tci_to_vid(vlan_tci),
342 vlan_tci_to_pcp(vlan_tci));
343 if (!(vlan_tci & htons(VLAN_CFI))) {
344 ds_put_cstr(ds, ",cfi=0");
345 }
346 }
347
348 static void
349 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
350 {
351 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
352 mpls_lse_to_label(mpls_lse),
353 mpls_lse_to_tc(mpls_lse),
354 mpls_lse_to_ttl(mpls_lse),
355 mpls_lse_to_bos(mpls_lse));
356 }
357
358 static void
359 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
360 const struct ovs_key_mpls *mpls_mask)
361 {
362 ovs_be32 key = mpls_key->mpls_lse;
363
364 if (mpls_mask == NULL) {
365 format_mpls_lse(ds, key);
366 } else {
367 ovs_be32 mask = mpls_mask->mpls_lse;
368
369 ds_put_format(ds, "label=%"PRIu32"/0x%x,tc=%d/%x,ttl=%d/0x%x,bos=%d/%x",
370 mpls_lse_to_label(key), mpls_lse_to_label(mask),
371 mpls_lse_to_tc(key), mpls_lse_to_tc(mask),
372 mpls_lse_to_ttl(key), mpls_lse_to_ttl(mask),
373 mpls_lse_to_bos(key), mpls_lse_to_bos(mask));
374 }
375 }
376
377 static void
378 format_odp_action(struct ds *ds, const struct nlattr *a)
379 {
380 int expected_len;
381 enum ovs_action_attr type = nl_attr_type(a);
382 const struct ovs_action_push_vlan *vlan;
383
384 expected_len = odp_action_len(nl_attr_type(a));
385 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
386 ds_put_format(ds, "bad length %zu, expected %d for: ",
387 nl_attr_get_size(a), expected_len);
388 format_generic_odp_action(ds, a);
389 return;
390 }
391
392 switch (type) {
393 case OVS_ACTION_ATTR_OUTPUT:
394 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
395 break;
396 case OVS_ACTION_ATTR_USERSPACE:
397 format_odp_userspace_action(ds, a);
398 break;
399 case OVS_ACTION_ATTR_SET:
400 ds_put_cstr(ds, "set(");
401 format_odp_key_attr(nl_attr_get(a), NULL, ds);
402 ds_put_cstr(ds, ")");
403 break;
404 case OVS_ACTION_ATTR_PUSH_VLAN:
405 vlan = nl_attr_get(a);
406 ds_put_cstr(ds, "push_vlan(");
407 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
408 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
409 }
410 format_vlan_tci(ds, vlan->vlan_tci);
411 ds_put_char(ds, ')');
412 break;
413 case OVS_ACTION_ATTR_POP_VLAN:
414 ds_put_cstr(ds, "pop_vlan");
415 break;
416 case OVS_ACTION_ATTR_PUSH_MPLS: {
417 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
418 ds_put_cstr(ds, "push_mpls(");
419 format_mpls_lse(ds, mpls->mpls_lse);
420 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
421 break;
422 }
423 case OVS_ACTION_ATTR_POP_MPLS: {
424 ovs_be16 ethertype = nl_attr_get_be16(a);
425 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
426 break;
427 }
428 case OVS_ACTION_ATTR_SAMPLE:
429 format_odp_sample_action(ds, a);
430 break;
431 case OVS_ACTION_ATTR_UNSPEC:
432 case __OVS_ACTION_ATTR_MAX:
433 default:
434 format_generic_odp_action(ds, a);
435 break;
436 }
437 }
438
439 void
440 format_odp_actions(struct ds *ds, const struct nlattr *actions,
441 size_t actions_len)
442 {
443 if (actions_len) {
444 const struct nlattr *a;
445 unsigned int left;
446
447 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
448 if (a != actions) {
449 ds_put_char(ds, ',');
450 }
451 format_odp_action(ds, a);
452 }
453 if (left) {
454 int i;
455
456 if (left == actions_len) {
457 ds_put_cstr(ds, "<empty>");
458 }
459 ds_put_format(ds, ",***%u leftover bytes*** (", left);
460 for (i = 0; i < left; i++) {
461 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
462 }
463 ds_put_char(ds, ')');
464 }
465 } else {
466 ds_put_cstr(ds, "drop");
467 }
468 }
469
470 static int
471 parse_odp_action(const char *s, const struct simap *port_names,
472 struct ofpbuf *actions)
473 {
474 /* Many of the sscanf calls in this function use oversized destination
475 * fields because some sscanf() implementations truncate the range of %i
476 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
477 * value of 0x7fff. The other alternatives are to allow only a single
478 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
479 * parsers.
480 *
481 * The tun_id parser has to use an alternative approach because there is no
482 * type larger than 64 bits. */
483
484 {
485 unsigned long long int port;
486 int n = -1;
487
488 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
489 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
490 return n;
491 }
492 }
493
494 if (port_names) {
495 int len = strcspn(s, delimiters);
496 struct simap_node *node;
497
498 node = simap_find_len(port_names, s, len);
499 if (node) {
500 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
501 return len;
502 }
503 }
504
505 {
506 unsigned long long int pid;
507 unsigned long long int output;
508 unsigned long long int probability;
509 unsigned long long int collector_set_id;
510 unsigned long long int obs_domain_id;
511 unsigned long long int obs_point_id;
512 int vid, pcp;
513 int n = -1;
514
515 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
516 odp_put_userspace_action(pid, NULL, 0, actions);
517 return n;
518 } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i,"
519 "pcp=%i,output=%lli))%n",
520 &pid, &vid, &pcp, &output, &n) > 0 && n > 0) {
521 union user_action_cookie cookie;
522 uint16_t tci;
523
524 tci = vid | (pcp << VLAN_PCP_SHIFT);
525 if (tci) {
526 tci |= VLAN_CFI;
527 }
528
529 cookie.type = USER_ACTION_COOKIE_SFLOW;
530 cookie.sflow.vlan_tci = htons(tci);
531 cookie.sflow.output = output;
532 odp_put_userspace_action(pid, &cookie, sizeof cookie.sflow,
533 actions);
534 return n;
535 } else if (sscanf(s, "userspace(pid=%lli,slow_path(%n", &pid, &n) > 0
536 && n > 0) {
537 union user_action_cookie cookie;
538 char reason[32];
539
540 if (s[n] == ')' && s[n + 1] == ')') {
541 reason[0] = '\0';
542 n += 2;
543 } else if (sscanf(s + n, "%31[^)]))", reason) > 0) {
544 n += strlen(reason) + 2;
545 } else {
546 return -EINVAL;
547 }
548
549 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
550 cookie.slow_path.unused = 0;
551 cookie.slow_path.reason = string_to_slow_path_reason(reason);
552
553 if (reason[0] && !cookie.slow_path.reason) {
554 return -EINVAL;
555 }
556
557 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path,
558 actions);
559 return n;
560 } else if (sscanf(s, "userspace(pid=%lli,flow_sample(probability=%lli,"
561 "collector_set_id=%lli,obs_domain_id=%lli,"
562 "obs_point_id=%lli))%n",
563 &pid, &probability, &collector_set_id,
564 &obs_domain_id, &obs_point_id, &n) > 0 && n > 0) {
565 union user_action_cookie cookie;
566
567 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
568 cookie.flow_sample.probability = probability;
569 cookie.flow_sample.collector_set_id = collector_set_id;
570 cookie.flow_sample.obs_domain_id = obs_domain_id;
571 cookie.flow_sample.obs_point_id = obs_point_id;
572 odp_put_userspace_action(pid, &cookie, sizeof cookie.flow_sample,
573 actions);
574 return n;
575 } else if (sscanf(s, "userspace(pid=%lli,ipfix)%n", &pid, &n) > 0
576 && n > 0) {
577 union user_action_cookie cookie;
578
579 cookie.type = USER_ACTION_COOKIE_IPFIX;
580 odp_put_userspace_action(pid, &cookie, sizeof cookie.ipfix,
581 actions);
582 return n;
583 } else if (sscanf(s, "userspace(pid=%lli,userdata(%n", &pid, &n) > 0
584 && n > 0) {
585 struct ofpbuf buf;
586 char *end;
587
588 ofpbuf_init(&buf, 16);
589 end = ofpbuf_put_hex(&buf, &s[n], NULL);
590 if (end[0] == ')' && end[1] == ')') {
591 odp_put_userspace_action(pid, buf.data, buf.size, actions);
592 ofpbuf_uninit(&buf);
593 return (end + 2) - s;
594 }
595 }
596 }
597
598 if (!strncmp(s, "set(", 4)) {
599 size_t start_ofs;
600 int retval;
601
602 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
603 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, NULL);
604 if (retval < 0) {
605 return retval;
606 }
607 if (s[retval + 4] != ')') {
608 return -EINVAL;
609 }
610 nl_msg_end_nested(actions, start_ofs);
611 return retval + 5;
612 }
613
614 {
615 struct ovs_action_push_vlan push;
616 int tpid = ETH_TYPE_VLAN;
617 int vid, pcp;
618 int cfi = 1;
619 int n = -1;
620
621 if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0
622 && n > 0)
623 || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
624 &vid, &pcp, &cfi, &n) > 0 && n > 0)
625 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
626 &tpid, &vid, &pcp, &n) > 0 && n > 0)
627 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
628 &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
629 push.vlan_tpid = htons(tpid);
630 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
631 | (pcp << VLAN_PCP_SHIFT)
632 | (cfi ? VLAN_CFI : 0));
633 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
634 &push, sizeof push);
635
636 return n;
637 }
638 }
639
640 if (!strncmp(s, "pop_vlan", 8)) {
641 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
642 return 8;
643 }
644
645 {
646 double percentage;
647 int n = -1;
648
649 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
650 && percentage >= 0. && percentage <= 100.0
651 && n > 0) {
652 size_t sample_ofs, actions_ofs;
653 double probability;
654
655 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
656 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
657 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
658 (probability <= 0 ? 0
659 : probability >= UINT32_MAX ? UINT32_MAX
660 : probability));
661
662 actions_ofs = nl_msg_start_nested(actions,
663 OVS_SAMPLE_ATTR_ACTIONS);
664 for (;;) {
665 int retval;
666
667 n += strspn(s + n, delimiters);
668 if (s[n] == ')') {
669 break;
670 }
671
672 retval = parse_odp_action(s + n, port_names, actions);
673 if (retval < 0) {
674 return retval;
675 }
676 n += retval;
677 }
678 nl_msg_end_nested(actions, actions_ofs);
679 nl_msg_end_nested(actions, sample_ofs);
680
681 return s[n + 1] == ')' ? n + 2 : -EINVAL;
682 }
683 }
684
685 return -EINVAL;
686 }
687
688 /* Parses the string representation of datapath actions, in the format output
689 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
690 * value. On success, the ODP actions are appended to 'actions' as a series of
691 * Netlink attributes. On failure, no data is appended to 'actions'. Either
692 * way, 'actions''s data might be reallocated. */
693 int
694 odp_actions_from_string(const char *s, const struct simap *port_names,
695 struct ofpbuf *actions)
696 {
697 size_t old_size;
698
699 if (!strcasecmp(s, "drop")) {
700 return 0;
701 }
702
703 old_size = actions->size;
704 for (;;) {
705 int retval;
706
707 s += strspn(s, delimiters);
708 if (!*s) {
709 return 0;
710 }
711
712 retval = parse_odp_action(s, port_names, actions);
713 if (retval < 0 || !strchr(delimiters, s[retval])) {
714 actions->size = old_size;
715 return -retval;
716 }
717 s += retval;
718 }
719
720 return 0;
721 }
722 \f
723 /* Returns the correct length of the payload for a flow key attribute of the
724 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
725 * is variable length. */
726 static int
727 odp_flow_key_attr_len(uint16_t type)
728 {
729 if (type > OVS_KEY_ATTR_MAX) {
730 return -1;
731 }
732
733 switch ((enum ovs_key_attr) type) {
734 case OVS_KEY_ATTR_ENCAP: return -2;
735 case OVS_KEY_ATTR_PRIORITY: return 4;
736 case OVS_KEY_ATTR_SKB_MARK: return 4;
737 case OVS_KEY_ATTR_TUNNEL: return -2;
738 case OVS_KEY_ATTR_IN_PORT: return 4;
739 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
740 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
741 case OVS_KEY_ATTR_ETHERTYPE: return 2;
742 case OVS_KEY_ATTR_MPLS: return sizeof(struct ovs_key_mpls);
743 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
744 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
745 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
746 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
747 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
748 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
749 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
750 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
751
752 case OVS_KEY_ATTR_UNSPEC:
753 case __OVS_KEY_ATTR_MAX:
754 return -1;
755 }
756
757 return -1;
758 }
759
760 static void
761 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
762 {
763 size_t len = nl_attr_get_size(a);
764 if (len) {
765 const uint8_t *unspec;
766 unsigned int i;
767
768 unspec = nl_attr_get(a);
769 for (i = 0; i < len; i++) {
770 if (i) {
771 ds_put_char(ds, ' ');
772 }
773 ds_put_format(ds, "%02x", unspec[i]);
774 }
775 }
776 }
777
778 static const char *
779 ovs_frag_type_to_string(enum ovs_frag_type type)
780 {
781 switch (type) {
782 case OVS_FRAG_TYPE_NONE:
783 return "no";
784 case OVS_FRAG_TYPE_FIRST:
785 return "first";
786 case OVS_FRAG_TYPE_LATER:
787 return "later";
788 case __OVS_FRAG_TYPE_MAX:
789 default:
790 return "<error>";
791 }
792 }
793
794 static int
795 tunnel_key_attr_len(int type)
796 {
797 switch (type) {
798 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
799 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
800 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
801 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
802 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
803 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
804 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
805 case __OVS_TUNNEL_KEY_ATTR_MAX:
806 return -1;
807 }
808 return -1;
809 }
810
811 enum odp_key_fitness
812 odp_tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
813 {
814 unsigned int left;
815 const struct nlattr *a;
816 bool ttl = false;
817 bool unknown = false;
818
819 NL_NESTED_FOR_EACH(a, left, attr) {
820 uint16_t type = nl_attr_type(a);
821 size_t len = nl_attr_get_size(a);
822 int expected_len = tunnel_key_attr_len(type);
823
824 if (len != expected_len && expected_len >= 0) {
825 return ODP_FIT_ERROR;
826 }
827
828 switch (type) {
829 case OVS_TUNNEL_KEY_ATTR_ID:
830 tun->tun_id = nl_attr_get_be64(a);
831 tun->flags |= FLOW_TNL_F_KEY;
832 break;
833 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
834 tun->ip_src = nl_attr_get_be32(a);
835 break;
836 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
837 tun->ip_dst = nl_attr_get_be32(a);
838 break;
839 case OVS_TUNNEL_KEY_ATTR_TOS:
840 tun->ip_tos = nl_attr_get_u8(a);
841 break;
842 case OVS_TUNNEL_KEY_ATTR_TTL:
843 tun->ip_ttl = nl_attr_get_u8(a);
844 ttl = true;
845 break;
846 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
847 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
848 break;
849 case OVS_TUNNEL_KEY_ATTR_CSUM:
850 tun->flags |= FLOW_TNL_F_CSUM;
851 break;
852 default:
853 /* Allow this to show up as unexpected, if there are unknown
854 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
855 unknown = true;
856 break;
857 }
858 }
859
860 if (!ttl) {
861 return ODP_FIT_ERROR;
862 }
863 if (unknown) {
864 return ODP_FIT_TOO_MUCH;
865 }
866 return ODP_FIT_PERFECT;
867 }
868
869 static void
870 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
871 {
872 size_t tun_key_ofs;
873
874 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
875
876 if (tun_key->flags & FLOW_TNL_F_KEY) {
877 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
878 }
879 if (tun_key->ip_src) {
880 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
881 }
882 if (tun_key->ip_dst) {
883 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
884 }
885 if (tun_key->ip_tos) {
886 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
887 }
888 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
889 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
890 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
891 }
892 if (tun_key->flags & FLOW_TNL_F_CSUM) {
893 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
894 }
895
896 nl_msg_end_nested(a, tun_key_ofs);
897 }
898
899 static bool
900 odp_mask_attr_is_exact(const struct nlattr *ma)
901 {
902 bool is_exact = false;
903 enum ovs_key_attr attr = nl_attr_type(ma);
904
905 if (attr == OVS_KEY_ATTR_TUNNEL) {
906 /* XXX this is a hack for now. Should change
907 * the exact match dection to per field
908 * instead of per attribute.
909 */
910 struct flow_tnl tun_mask;
911 memset(&tun_mask, 0, sizeof tun_mask);
912 odp_tun_key_from_attr(ma, &tun_mask);
913 if (tun_mask.flags == (FLOW_TNL_F_KEY
914 | FLOW_TNL_F_DONT_FRAGMENT
915 | FLOW_TNL_F_CSUM)) {
916 /* The flags are exact match, check the remaining fields. */
917 tun_mask.flags = 0xffff;
918 is_exact = is_all_ones((uint8_t *)&tun_mask,
919 offsetof(struct flow_tnl, ip_ttl));
920 }
921 } else {
922 is_exact = is_all_ones(nl_attr_get(ma), nl_attr_get_size(ma));
923 }
924
925 return is_exact;
926 }
927
928
929 static void
930 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
931 struct ds *ds)
932 {
933 struct flow_tnl tun_key;
934 enum ovs_key_attr attr = nl_attr_type(a);
935 char namebuf[OVS_KEY_ATTR_BUFSIZE];
936 int expected_len;
937 bool is_exact;
938
939 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
940
941 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
942
943 {
944 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
945 if (expected_len != -2) {
946 bool bad_key_len = nl_attr_get_size(a) != expected_len;
947 bool bad_mask_len = ma && nl_attr_get_size(a) != expected_len;
948
949 if (bad_key_len || bad_mask_len) {
950 if (bad_key_len) {
951 ds_put_format(ds, "(bad key length %zu, expected %d)(",
952 nl_attr_get_size(a),
953 odp_flow_key_attr_len(nl_attr_type(a)));
954 }
955 format_generic_odp_key(a, ds);
956 if (bad_mask_len) {
957 ds_put_char(ds, '/');
958 ds_put_format(ds, "(bad mask length %zu, expected %d)(",
959 nl_attr_get_size(ma),
960 odp_flow_key_attr_len(nl_attr_type(ma)));
961 }
962 format_generic_odp_key(ma, ds);
963 ds_put_char(ds, ')');
964 return;
965 }
966 }
967 }
968
969 ds_put_char(ds, '(');
970 switch (attr) {
971 case OVS_KEY_ATTR_ENCAP:
972 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
973 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
974 nl_attr_get(ma), nl_attr_get_size(ma), ds);
975 } else if (nl_attr_get_size(a)) {
976 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, ds);
977 }
978 break;
979
980 case OVS_KEY_ATTR_PRIORITY:
981 case OVS_KEY_ATTR_SKB_MARK:
982 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
983 if (!is_exact) {
984 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
985 }
986 break;
987
988 case OVS_KEY_ATTR_TUNNEL:
989 memset(&tun_key, 0, sizeof tun_key);
990 if (odp_tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
991 ds_put_format(ds, "error");
992 } else if (!is_exact) {
993 struct flow_tnl tun_mask;
994
995 memset(&tun_mask, 0, sizeof tun_mask);
996 odp_tun_key_from_attr(ma, &tun_mask);
997 ds_put_format(ds, "tun_id=%#"PRIx64"/%#"PRIx64
998 ",src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
999 ",tos=%#"PRIx8"/%#"PRIx8",ttl=%"PRIu8"/%#"PRIx8
1000 ",flags(",
1001 ntohll(tun_key.tun_id), ntohll(tun_mask.tun_id),
1002 IP_ARGS(tun_key.ip_src), IP_ARGS(tun_mask.ip_src),
1003 IP_ARGS(tun_key.ip_dst), IP_ARGS(tun_mask.ip_dst),
1004 tun_key.ip_tos, tun_mask.ip_tos,
1005 tun_key.ip_ttl, tun_mask.ip_ttl);
1006
1007 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1008
1009 /* XXX This code is correct, but enabling it would break the unit
1010 test. Disable it for now until the input parser is fixed.
1011
1012 ds_put_char(ds, '/');
1013 format_flags(ds, flow_tun_flag_to_string, tun_mask.flags, ',');
1014 */
1015 ds_put_char(ds, ')');
1016 } else {
1017 ds_put_format(ds, "tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
1018 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
1019 ntohll(tun_key.tun_id),
1020 IP_ARGS(tun_key.ip_src),
1021 IP_ARGS(tun_key.ip_dst),
1022 tun_key.ip_tos, tun_key.ip_ttl);
1023
1024 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1025 ds_put_char(ds, ')');
1026 }
1027 break;
1028
1029 case OVS_KEY_ATTR_IN_PORT:
1030 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1031 if (!is_exact) {
1032 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1033 }
1034 break;
1035
1036 case OVS_KEY_ATTR_ETHERNET:
1037 if (!is_exact) {
1038 const struct ovs_key_ethernet *eth_mask = nl_attr_get(ma);
1039 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1040
1041 ds_put_format(ds, "src="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1042 ",dst="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1043 ETH_ADDR_ARGS(eth_key->eth_src),
1044 ETH_ADDR_ARGS(eth_mask->eth_src),
1045 ETH_ADDR_ARGS(eth_key->eth_dst),
1046 ETH_ADDR_ARGS(eth_mask->eth_dst));
1047 } else {
1048 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1049
1050 ds_put_format(ds, "src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT,
1051 ETH_ADDR_ARGS(eth_key->eth_src),
1052 ETH_ADDR_ARGS(eth_key->eth_dst));
1053 }
1054 break;
1055
1056 case OVS_KEY_ATTR_VLAN:
1057 {
1058 ovs_be16 vlan_tci = nl_attr_get_be16(a);
1059 if (!is_exact) {
1060 ovs_be16 mask = nl_attr_get_be16(ma);
1061 ds_put_format(ds, "vid=%"PRIu16"/%"PRIx16",pcp=%d/0x%x,cfi=%d/%d",
1062 vlan_tci_to_vid(vlan_tci),
1063 vlan_tci_to_vid(mask),
1064 vlan_tci_to_pcp(vlan_tci),
1065 vlan_tci_to_pcp(mask),
1066 vlan_tci_to_cfi(vlan_tci),
1067 vlan_tci_to_cfi(mask));
1068 } else {
1069 format_vlan_tci(ds, vlan_tci);
1070 }
1071 }
1072 break;
1073
1074 case OVS_KEY_ATTR_MPLS: {
1075 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
1076 const struct ovs_key_mpls *mpls_mask = NULL;
1077 if (!is_exact) {
1078 mpls_mask = nl_attr_get(ma);
1079 }
1080 format_mpls(ds, mpls_key, mpls_mask);
1081 break;
1082 }
1083
1084 case OVS_KEY_ATTR_ETHERTYPE:
1085 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
1086 if (!is_exact) {
1087 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
1088 }
1089 break;
1090
1091 case OVS_KEY_ATTR_IPV4:
1092 if (!is_exact) {
1093 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1094 const struct ovs_key_ipv4 *ipv4_mask = nl_attr_get(ma);
1095
1096 ds_put_format(ds, "src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1097 ",proto=%"PRIu8"/%#"PRIx8",tos=%#"PRIx8"/%#"PRIx8
1098 ",ttl=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1099 IP_ARGS(ipv4_key->ipv4_src),
1100 IP_ARGS(ipv4_mask->ipv4_src),
1101 IP_ARGS(ipv4_key->ipv4_dst),
1102 IP_ARGS(ipv4_mask->ipv4_dst),
1103 ipv4_key->ipv4_proto, ipv4_mask->ipv4_proto,
1104 ipv4_key->ipv4_tos, ipv4_mask->ipv4_tos,
1105 ipv4_key->ipv4_ttl, ipv4_mask->ipv4_ttl,
1106 ovs_frag_type_to_string(ipv4_key->ipv4_frag),
1107 ipv4_mask->ipv4_frag);
1108 } else {
1109 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1110
1111 ds_put_format(ds, "src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
1112 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s",
1113 IP_ARGS(ipv4_key->ipv4_src),
1114 IP_ARGS(ipv4_key->ipv4_dst),
1115 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
1116 ipv4_key->ipv4_ttl,
1117 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
1118 }
1119 break;
1120
1121 case OVS_KEY_ATTR_IPV6:
1122 if (!is_exact) {
1123 const struct ovs_key_ipv6 *ipv6_key, *ipv6_mask;
1124 char src_str[INET6_ADDRSTRLEN];
1125 char dst_str[INET6_ADDRSTRLEN];
1126 char src_mask[INET6_ADDRSTRLEN];
1127 char dst_mask[INET6_ADDRSTRLEN];
1128
1129 ipv6_key = nl_attr_get(a);
1130 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1131 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1132
1133 ipv6_mask = nl_attr_get(ma);
1134 inet_ntop(AF_INET6, ipv6_mask->ipv6_src, src_mask, sizeof src_mask);
1135 inet_ntop(AF_INET6, ipv6_mask->ipv6_dst, dst_mask, sizeof dst_mask);
1136
1137 ds_put_format(ds, "src=%s/%s,dst=%s/%s,label=%#"PRIx32"/%#"PRIx32
1138 ",proto=%"PRIu8"/%#"PRIx8",tclass=%#"PRIx8"/%#"PRIx8
1139 ",hlimit=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1140 src_str, src_mask, dst_str, dst_mask,
1141 ntohl(ipv6_key->ipv6_label),
1142 ntohl(ipv6_mask->ipv6_label),
1143 ipv6_key->ipv6_proto, ipv6_mask->ipv6_proto,
1144 ipv6_key->ipv6_tclass, ipv6_mask->ipv6_tclass,
1145 ipv6_key->ipv6_hlimit, ipv6_mask->ipv6_hlimit,
1146 ovs_frag_type_to_string(ipv6_key->ipv6_frag),
1147 ipv6_mask->ipv6_frag);
1148 } else {
1149 const struct ovs_key_ipv6 *ipv6_key;
1150 char src_str[INET6_ADDRSTRLEN];
1151 char dst_str[INET6_ADDRSTRLEN];
1152
1153 ipv6_key = nl_attr_get(a);
1154 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1155 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1156
1157 ds_put_format(ds, "src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
1158 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s",
1159 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
1160 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
1161 ipv6_key->ipv6_hlimit,
1162 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
1163 }
1164 break;
1165
1166 case OVS_KEY_ATTR_TCP:
1167 if (!is_exact) {
1168 const struct ovs_key_tcp *tcp_mask = nl_attr_get(ma);
1169 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1170
1171 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1172 ",dst=%"PRIu16"/%#"PRIx16,
1173 ntohs(tcp_key->tcp_src), ntohs(tcp_mask->tcp_src),
1174 ntohs(tcp_key->tcp_dst), ntohs(tcp_mask->tcp_dst));
1175 } else {
1176 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1177
1178 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1179 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
1180 }
1181 break;
1182
1183 case OVS_KEY_ATTR_UDP:
1184 if (!is_exact) {
1185 const struct ovs_key_udp *udp_mask = nl_attr_get(ma);
1186 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1187
1188 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1189 ",dst=%"PRIu16"/%#"PRIx16,
1190 ntohs(udp_key->udp_src), ntohs(udp_mask->udp_src),
1191 ntohs(udp_key->udp_dst), ntohs(udp_mask->udp_dst));
1192 } else {
1193 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1194
1195 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1196 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
1197 }
1198 break;
1199
1200 case OVS_KEY_ATTR_ICMP:
1201 if (!is_exact) {
1202 const struct ovs_key_icmp *icmp_mask = nl_attr_get(ma);
1203 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1204
1205 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1206 icmp_key->icmp_type, icmp_mask->icmp_type,
1207 icmp_key->icmp_code, icmp_mask->icmp_code);
1208 } else {
1209 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1210
1211 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1212 icmp_key->icmp_type, icmp_key->icmp_code);
1213 }
1214 break;
1215
1216 case OVS_KEY_ATTR_ICMPV6:
1217 if (!is_exact) {
1218 const struct ovs_key_icmpv6 *icmpv6_mask = nl_attr_get(ma);
1219 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1220
1221 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1222 icmpv6_key->icmpv6_type, icmpv6_mask->icmpv6_type,
1223 icmpv6_key->icmpv6_code, icmpv6_mask->icmpv6_code);
1224 } else {
1225 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1226
1227 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1228 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
1229 }
1230 break;
1231
1232 case OVS_KEY_ATTR_ARP:
1233 if (!is_exact) {
1234 const struct ovs_key_arp *arp_mask = nl_attr_get(ma);
1235 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1236
1237 ds_put_format(ds, "sip="IP_FMT"/"IP_FMT",tip="IP_FMT"/"IP_FMT
1238 ",op=%"PRIu16"/%#"PRIx16
1239 ",sha="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1240 ",tha="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1241 IP_ARGS(arp_key->arp_sip),
1242 IP_ARGS(arp_mask->arp_sip),
1243 IP_ARGS(arp_key->arp_tip),
1244 IP_ARGS(arp_mask->arp_tip),
1245 ntohs(arp_key->arp_op), ntohs(arp_mask->arp_op),
1246 ETH_ADDR_ARGS(arp_key->arp_sha),
1247 ETH_ADDR_ARGS(arp_mask->arp_sha),
1248 ETH_ADDR_ARGS(arp_key->arp_tha),
1249 ETH_ADDR_ARGS(arp_mask->arp_tha));
1250 } else {
1251 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1252
1253 ds_put_format(ds, "sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
1254 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT,
1255 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
1256 ntohs(arp_key->arp_op),
1257 ETH_ADDR_ARGS(arp_key->arp_sha),
1258 ETH_ADDR_ARGS(arp_key->arp_tha));
1259 }
1260 break;
1261
1262 case OVS_KEY_ATTR_ND: {
1263 const struct ovs_key_nd *nd_key, *nd_mask = NULL;
1264 char target[INET6_ADDRSTRLEN];
1265
1266 nd_key = nl_attr_get(a);
1267 if (!is_exact) {
1268 nd_mask = nl_attr_get(ma);
1269 }
1270
1271 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
1272 ds_put_format(ds, "target=%s", target);
1273 if (!is_exact) {
1274 inet_ntop(AF_INET6, nd_mask->nd_target, target, sizeof target);
1275 ds_put_format(ds, "/%s", target);
1276 }
1277
1278 if (!eth_addr_is_zero(nd_key->nd_sll)) {
1279 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
1280 ETH_ADDR_ARGS(nd_key->nd_sll));
1281 if (!is_exact) {
1282 ds_put_format(ds, "/"ETH_ADDR_FMT,
1283 ETH_ADDR_ARGS(nd_mask->nd_sll));
1284 }
1285 }
1286 if (!eth_addr_is_zero(nd_key->nd_tll)) {
1287 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
1288 ETH_ADDR_ARGS(nd_key->nd_tll));
1289 if (!is_exact) {
1290 ds_put_format(ds, "/"ETH_ADDR_FMT,
1291 ETH_ADDR_ARGS(nd_mask->nd_tll));
1292 }
1293 }
1294 break;
1295 }
1296
1297 case OVS_KEY_ATTR_UNSPEC:
1298 case __OVS_KEY_ATTR_MAX:
1299 default:
1300 format_generic_odp_key(a, ds);
1301 if (!is_exact) {
1302 ds_put_char(ds, '/');
1303 format_generic_odp_key(ma, ds);
1304 }
1305 break;
1306 }
1307 ds_put_char(ds, ')');
1308 }
1309
1310 static struct nlattr *
1311 generate_all_wildcard_mask(struct ofpbuf *ofp, const struct nlattr *key)
1312 {
1313 const struct nlattr *a;
1314 unsigned int left;
1315 int type = nl_attr_type(key);
1316 int size = nl_attr_get_size(key);
1317
1318 if (odp_flow_key_attr_len(type) >=0) {
1319 memset(nl_msg_put_unspec_uninit(ofp, type, size), 0, size);
1320 } else {
1321 size_t nested_mask;
1322
1323 nested_mask = nl_msg_start_nested(ofp, type);
1324 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
1325 generate_all_wildcard_mask(ofp, nl_attr_get(a));
1326 }
1327 nl_msg_end_nested(ofp, nested_mask);
1328 }
1329
1330 return ofp->base;
1331 }
1332
1333 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1334 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
1335 * 'mask_len' bytes of 'mask' which apply to 'key'. */
1336 void
1337 odp_flow_format(const struct nlattr *key, size_t key_len,
1338 const struct nlattr *mask, size_t mask_len,
1339 struct ds *ds)
1340 {
1341 if (key_len) {
1342 const struct nlattr *a;
1343 unsigned int left;
1344 bool has_ethtype_key = false;
1345 const struct nlattr *ma = NULL;
1346 struct ofpbuf ofp;
1347
1348 ofpbuf_init(&ofp, 100);
1349 NL_ATTR_FOR_EACH (a, left, key, key_len) {
1350 if (a != key) {
1351 ds_put_char(ds, ',');
1352 }
1353 if (nl_attr_type(a) == OVS_KEY_ATTR_ETHERTYPE) {
1354 has_ethtype_key = true;
1355 }
1356 if (mask && mask_len) {
1357 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
1358 if (!ma) {
1359 ma = generate_all_wildcard_mask(&ofp, a);
1360 }
1361 }
1362 format_odp_key_attr(a, ma, ds);
1363 ofpbuf_clear(&ofp);
1364 }
1365 ofpbuf_uninit(&ofp);
1366
1367 if (left) {
1368 int i;
1369
1370 if (left == key_len) {
1371 ds_put_cstr(ds, "<empty>");
1372 }
1373 ds_put_format(ds, ",***%u leftover bytes*** (", left);
1374 for (i = 0; i < left; i++) {
1375 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
1376 }
1377 ds_put_char(ds, ')');
1378 }
1379 if (!has_ethtype_key) {
1380 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
1381 if (ma) {
1382 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
1383 ntohs(nl_attr_get_be16(ma)));
1384 }
1385 }
1386 } else {
1387 ds_put_cstr(ds, "<empty>");
1388 }
1389 }
1390
1391 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1392 * OVS_KEY_ATTR_* attributes in 'key'. */
1393 void
1394 odp_flow_key_format(const struct nlattr *key,
1395 size_t key_len, struct ds *ds)
1396 {
1397 odp_flow_format(key, key_len, NULL, 0, ds);
1398 }
1399
1400 static void
1401 put_nd(struct ovs_key_nd* nd_key, const uint8_t *nd_sll,
1402 const uint8_t *nd_tll, struct ofpbuf *key)
1403 {
1404 if (nd_sll) {
1405 memcpy(nd_key->nd_sll, nd_sll, ETH_ADDR_LEN);
1406 }
1407
1408 if (nd_tll) {
1409 memcpy(nd_key->nd_tll, nd_tll, ETH_ADDR_LEN);
1410 }
1411
1412 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, nd_key, sizeof *nd_key);
1413 }
1414
1415 static int
1416 put_nd_key(int n, const char *nd_target_s, const uint8_t *nd_sll,
1417 const uint8_t *nd_tll, struct ofpbuf *key)
1418 {
1419 struct ovs_key_nd nd_key;
1420
1421 memset(&nd_key, 0, sizeof nd_key);
1422
1423 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
1424 return -EINVAL;
1425 }
1426
1427 put_nd(&nd_key, nd_sll, nd_tll, key);
1428 return n;
1429 }
1430
1431 static int
1432 put_nd_mask(int n, const char *nd_target_s,
1433 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *mask)
1434 {
1435 struct ovs_key_nd nd_mask;
1436
1437 memset(&nd_mask, 0xff, sizeof nd_mask);
1438
1439 if (strlen(nd_target_s) != 0 &&
1440 inet_pton(AF_INET6, nd_target_s, nd_mask.nd_target) != 1) {
1441 return -EINVAL;
1442 }
1443
1444 put_nd(&nd_mask, nd_sll, nd_tll, mask);
1445 return n;
1446 }
1447
1448 static bool
1449 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1450 {
1451 if (!strcasecmp(s, "no")) {
1452 *type = OVS_FRAG_TYPE_NONE;
1453 } else if (!strcasecmp(s, "first")) {
1454 *type = OVS_FRAG_TYPE_FIRST;
1455 } else if (!strcasecmp(s, "later")) {
1456 *type = OVS_FRAG_TYPE_LATER;
1457 } else {
1458 return false;
1459 }
1460 return true;
1461 }
1462
1463 static ovs_be32
1464 mpls_lse_from_components(int mpls_label, int mpls_tc, int mpls_ttl, int mpls_bos)
1465 {
1466 return (htonl((mpls_label << MPLS_LABEL_SHIFT) |
1467 (mpls_tc << MPLS_TC_SHIFT) |
1468 (mpls_ttl << MPLS_TTL_SHIFT) |
1469 (mpls_bos << MPLS_BOS_SHIFT)));
1470 }
1471
1472 static int
1473 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
1474 struct ofpbuf *key, struct ofpbuf *mask)
1475 {
1476 /* Many of the sscanf calls in this function use oversized destination
1477 * fields because some sscanf() implementations truncate the range of %i
1478 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
1479 * value of 0x7fff. The other alternatives are to allow only a single
1480 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
1481 * parsers.
1482 *
1483 * The tun_id parser has to use an alternative approach because there is no
1484 * type larger than 64 bits. */
1485
1486 {
1487 unsigned long long int priority;
1488 unsigned long long int priority_mask;
1489 int n = -1;
1490
1491 if (mask && sscanf(s, "skb_priority(%lli/%lli)%n", &priority,
1492 &priority_mask, &n) > 0 && n > 0) {
1493 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1494 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, priority_mask);
1495 return n;
1496 } else if (sscanf(s, "skb_priority(%lli)%n",
1497 &priority, &n) > 0 && n > 0) {
1498 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1499 if (mask) {
1500 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, UINT32_MAX);
1501 }
1502 return n;
1503 }
1504 }
1505
1506 {
1507 unsigned long long int mark;
1508 unsigned long long int mark_mask;
1509 int n = -1;
1510
1511 if (mask && sscanf(s, "skb_mark(%lli/%lli)%n", &mark,
1512 &mark_mask, &n) > 0 && n > 0) {
1513 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1514 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, mark_mask);
1515 return n;
1516 } else if (sscanf(s, "skb_mark(%lli)%n", &mark, &n) > 0 && n > 0) {
1517 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1518 if (mask) {
1519 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, UINT32_MAX);
1520 }
1521 return n;
1522 }
1523 }
1524
1525 {
1526 char tun_id_s[32];
1527 int tos, tos_mask, ttl, ttl_mask;
1528 struct flow_tnl tun_key, tun_key_mask;
1529 unsigned long long tun_id_mask;
1530 int n = -1;
1531
1532 if (mask && sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF]/%llx,"
1533 "src="IP_SCAN_FMT"/"IP_SCAN_FMT",dst="IP_SCAN_FMT
1534 "/"IP_SCAN_FMT",tos=%i/%i,ttl=%i/%i,flags%n",
1535 tun_id_s, &tun_id_mask,
1536 IP_SCAN_ARGS(&tun_key.ip_src),
1537 IP_SCAN_ARGS(&tun_key_mask.ip_src),
1538 IP_SCAN_ARGS(&tun_key.ip_dst),
1539 IP_SCAN_ARGS(&tun_key_mask.ip_dst),
1540 &tos, &tos_mask, &ttl, &ttl_mask,
1541 &n) > 0 && n > 0) {
1542 int res;
1543 uint32_t flags;
1544
1545 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1546 tun_key_mask.tun_id = htonll(tun_id_mask);
1547 tun_key.ip_tos = tos;
1548 tun_key_mask.ip_tos = tos_mask;
1549 tun_key.ip_ttl = ttl;
1550 tun_key_mask.ip_ttl = ttl_mask;
1551 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1552 tun_key.flags = flags;
1553 tun_key_mask.flags = UINT16_MAX;
1554
1555 if (res < 0) {
1556 return res;
1557 }
1558 n += res;
1559 if (s[n] != ')') {
1560 return -EINVAL;
1561 }
1562 n++;
1563 tun_key_to_attr(key, &tun_key);
1564 if (mask) {
1565 tun_key_to_attr(mask, &tun_key_mask);
1566 }
1567 return n;
1568 } else if (sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
1569 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1570 ",tos=%i,ttl=%i,flags%n", tun_id_s,
1571 IP_SCAN_ARGS(&tun_key.ip_src),
1572 IP_SCAN_ARGS(&tun_key.ip_dst), &tos, &ttl,
1573 &n) > 0 && n > 0) {
1574 int res;
1575 uint32_t flags;
1576
1577 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1578 tun_key.ip_tos = tos;
1579 tun_key.ip_ttl = ttl;
1580 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1581 tun_key.flags = flags;
1582
1583 if (res < 0) {
1584 return res;
1585 }
1586 n += res;
1587 if (s[n] != ')') {
1588 return -EINVAL;
1589 }
1590 n++;
1591 tun_key_to_attr(key, &tun_key);
1592
1593 if (mask) {
1594 memset(&tun_key, 0xff, sizeof tun_key);
1595 tun_key_to_attr(mask, &tun_key);
1596 }
1597 return n;
1598 }
1599 }
1600
1601 {
1602 unsigned long long int in_port;
1603 unsigned long long int in_port_mask;
1604 int n = -1;
1605
1606 if (mask && sscanf(s, "in_port(%lli/%lli)%n", &in_port,
1607 &in_port_mask, &n) > 0 && n > 0) {
1608 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1609 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, in_port_mask);
1610 return n;
1611 } else if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1612 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1613 if (mask) {
1614 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1615 }
1616 return n;
1617 }
1618 }
1619
1620
1621 if (port_names && !strncmp(s, "in_port(", 8)) {
1622 const char *name;
1623 const struct simap_node *node;
1624 int name_len;
1625
1626 name = s + 8;
1627 name_len = strcspn(s, ")");
1628 node = simap_find_len(port_names, name, name_len);
1629 if (node) {
1630 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1631
1632 if (mask) {
1633 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1634 }
1635 return 8 + name_len + 1;
1636 }
1637 }
1638
1639 {
1640 struct ovs_key_ethernet eth_key;
1641 struct ovs_key_ethernet eth_key_mask;
1642 int n = -1;
1643
1644 if (mask && sscanf(s,
1645 "eth(src="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
1646 "dst="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
1647 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1648 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_src),
1649 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst),
1650 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_dst), &n) > 0 && n > 0) {
1651
1652 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1653 &eth_key, sizeof eth_key);
1654 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1655 &eth_key_mask, sizeof eth_key_mask);
1656 return n;
1657 } else if (sscanf(s,
1658 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1659 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1660 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1661 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1662 &eth_key, sizeof eth_key);
1663
1664 if (mask) {
1665 memset(&eth_key, 0xff, sizeof eth_key);
1666 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1667 &eth_key, sizeof eth_key);
1668 }
1669 return n;
1670 }
1671 }
1672
1673 {
1674 uint16_t vid, vid_mask;
1675 int pcp, pcp_mask;
1676 int cfi, cfi_mask;
1677 int n = -1;
1678
1679 if (mask && (sscanf(s, "vlan(vid=%"SCNi16"/%"SCNi16",pcp=%i/%i)%n",
1680 &vid, &vid_mask, &pcp, &pcp_mask, &n) > 0 && n > 0)) {
1681 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1682 htons((vid << VLAN_VID_SHIFT) |
1683 (pcp << VLAN_PCP_SHIFT) |
1684 VLAN_CFI));
1685 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1686 htons((vid_mask << VLAN_VID_SHIFT) |
1687 (pcp_mask << VLAN_PCP_SHIFT) |
1688 (1 << VLAN_CFI_SHIFT)));
1689 return n;
1690 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n",
1691 &vid, &pcp, &n) > 0 && n > 0)) {
1692 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1693 htons((vid << VLAN_VID_SHIFT) |
1694 (pcp << VLAN_PCP_SHIFT) |
1695 VLAN_CFI));
1696 if (mask) {
1697 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, htons(UINT16_MAX));
1698 }
1699 return n;
1700 } else if (mask && (sscanf(s, "vlan(vid=%"SCNi16"/%"SCNi16",pcp=%i/%i,cfi=%i/%i)%n",
1701 &vid, &vid_mask, &pcp, &pcp_mask, &cfi, &cfi_mask, &n) > 0 && n > 0)) {
1702 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1703 htons((vid << VLAN_VID_SHIFT) |
1704 (pcp << VLAN_PCP_SHIFT) |
1705 (cfi ? VLAN_CFI : 0)));
1706 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1707 htons((vid_mask << VLAN_VID_SHIFT) |
1708 (pcp_mask << VLAN_PCP_SHIFT) |
1709 (cfi_mask << VLAN_CFI_SHIFT)));
1710 return n;
1711 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1712 &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
1713 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1714 htons((vid << VLAN_VID_SHIFT) |
1715 (pcp << VLAN_PCP_SHIFT) |
1716 (cfi ? VLAN_CFI : 0)));
1717 if (mask) {
1718 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, htons(UINT16_MAX));
1719 }
1720 return n;
1721 }
1722 }
1723
1724 {
1725 int eth_type;
1726 int eth_type_mask;
1727 int n = -1;
1728
1729 if (mask && sscanf(s, "eth_type(%i/%i)%n",
1730 &eth_type, &eth_type_mask, &n) > 0 && n > 0) {
1731 if (eth_type != 0) {
1732 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1733 }
1734 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type_mask));
1735 return n;
1736 } else if (sscanf(s, "eth_type(%i)%n", &eth_type, &n) > 0 && n > 0) {
1737 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1738 if (mask) {
1739 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE,
1740 htons(UINT16_MAX));
1741 }
1742 return n;
1743 }
1744 }
1745
1746 {
1747 int label, tc, ttl, bos;
1748 int label_mask, tc_mask, ttl_mask, bos_mask;
1749 int n = -1;
1750
1751 if (mask && sscanf(s, "mpls(label=%"SCNi32"/%"SCNi32",tc=%i/%i,ttl=%i/%i,bos=%i/%i)%n",
1752 &label, &label_mask, &tc, &tc_mask, &ttl, &ttl_mask, &bos, &bos_mask, &n) > 0 && n > 0) {
1753 struct ovs_key_mpls *mpls, *mpls_mask;
1754
1755 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1756 sizeof *mpls);
1757 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1758
1759 mpls_mask = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1760 sizeof *mpls_mask);
1761 mpls_mask->mpls_lse = mpls_lse_from_components(
1762 label_mask, tc_mask, ttl_mask, bos_mask);
1763 return n;
1764 } else if (sscanf(s, "mpls(label=%"SCNi32",tc=%i,ttl=%i,bos=%i)%n",
1765 &label, &tc, &ttl, &bos, &n) > 0 &&
1766 n > 0) {
1767 struct ovs_key_mpls *mpls;
1768
1769 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1770 sizeof *mpls);
1771 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1772 if (mask) {
1773 mpls = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1774 sizeof *mpls);
1775 mpls->mpls_lse = htonl(UINT32_MAX);
1776 }
1777 return n;
1778 }
1779 }
1780
1781
1782 {
1783 ovs_be32 ipv4_src, ipv4_src_mask;
1784 ovs_be32 ipv4_dst, ipv4_dst_mask;
1785 int ipv4_proto, ipv4_proto_mask;
1786 int ipv4_tos, ipv4_tos_mask;
1787 int ipv4_ttl, ipv4_ttl_mask;
1788 char frag[8];
1789 int ipv4_frag_mask;
1790 enum ovs_frag_type ipv4_frag;
1791 int n = -1;
1792
1793 if (mask && sscanf(s, "ipv4(src="IP_SCAN_FMT"/"IP_SCAN_FMT","
1794 "dst="IP_SCAN_FMT"/"IP_SCAN_FMT","
1795 "proto=%i/%i,tos=%i/%i,ttl=%i/%i,"
1796 "frag=%7[a-z]/%i)%n",
1797 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_src_mask),
1798 IP_SCAN_ARGS(&ipv4_dst), IP_SCAN_ARGS(&ipv4_dst_mask),
1799 &ipv4_proto, &ipv4_proto_mask,
1800 &ipv4_tos, &ipv4_tos_mask, &ipv4_ttl, &ipv4_ttl_mask,
1801 frag, &ipv4_frag_mask, &n) > 0
1802 && n > 0
1803 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1804 struct ovs_key_ipv4 ipv4_key;
1805 struct ovs_key_ipv4 ipv4_mask;
1806
1807 ipv4_key.ipv4_src = ipv4_src;
1808 ipv4_key.ipv4_dst = ipv4_dst;
1809 ipv4_key.ipv4_proto = ipv4_proto;
1810 ipv4_key.ipv4_tos = ipv4_tos;
1811 ipv4_key.ipv4_ttl = ipv4_ttl;
1812 ipv4_key.ipv4_frag = ipv4_frag;
1813 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1814 &ipv4_key, sizeof ipv4_key);
1815
1816 ipv4_mask.ipv4_src = ipv4_src_mask;
1817 ipv4_mask.ipv4_dst = ipv4_dst_mask;
1818 ipv4_mask.ipv4_proto = ipv4_proto_mask;
1819 ipv4_mask.ipv4_tos = ipv4_tos_mask;
1820 ipv4_mask.ipv4_ttl = ipv4_ttl_mask;
1821 ipv4_mask.ipv4_frag = ipv4_frag_mask;
1822 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1823 &ipv4_mask, sizeof ipv4_mask);
1824 return n;
1825 } else if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1826 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1827 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1828 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1829 && n > 0
1830 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1831 struct ovs_key_ipv4 ipv4_key;
1832
1833 ipv4_key.ipv4_src = ipv4_src;
1834 ipv4_key.ipv4_dst = ipv4_dst;
1835 ipv4_key.ipv4_proto = ipv4_proto;
1836 ipv4_key.ipv4_tos = ipv4_tos;
1837 ipv4_key.ipv4_ttl = ipv4_ttl;
1838 ipv4_key.ipv4_frag = ipv4_frag;
1839 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1840 &ipv4_key, sizeof ipv4_key);
1841
1842 if (mask) {
1843 memset(&ipv4_key, 0xff, sizeof ipv4_key);
1844 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1845 &ipv4_key, sizeof ipv4_key);
1846 }
1847 return n;
1848 }
1849 }
1850
1851 {
1852 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1853 char ipv6_src_mask_s[IPV6_SCAN_LEN + 1];
1854 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1855 char ipv6_dst_mask_s[IPV6_SCAN_LEN + 1];
1856 int ipv6_label, ipv6_label_mask;
1857 int ipv6_proto, ipv6_proto_mask;
1858 int ipv6_tclass, ipv6_tclass_mask;
1859 int ipv6_hlimit, ipv6_hlimit_mask;
1860 char frag[8];
1861 enum ovs_frag_type ipv6_frag;
1862 int ipv6_frag_mask;
1863 int n = -1;
1864
1865 if (mask && sscanf(s, "ipv6(src="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT",dst="
1866 IPV6_SCAN_FMT"/"IPV6_SCAN_FMT","
1867 "label=%i/%i,proto=%i/%i,tclass=%i/%i,"
1868 "hlimit=%i/%i,frag=%7[a-z]/%i)%n",
1869 ipv6_src_s, ipv6_src_mask_s, ipv6_dst_s, ipv6_dst_mask_s,
1870 &ipv6_label, &ipv6_label_mask, &ipv6_proto,
1871 &ipv6_proto_mask, &ipv6_tclass, &ipv6_tclass_mask,
1872 &ipv6_hlimit, &ipv6_hlimit_mask, frag,
1873 &ipv6_frag_mask, &n) > 0
1874 && n > 0
1875 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1876 struct ovs_key_ipv6 ipv6_key;
1877 struct ovs_key_ipv6 ipv6_mask;
1878
1879 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1880 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1 ||
1881 inet_pton(AF_INET6, ipv6_src_mask_s, &ipv6_mask.ipv6_src) != 1 ||
1882 inet_pton(AF_INET6, ipv6_dst_mask_s, &ipv6_mask.ipv6_dst) != 1) {
1883 return -EINVAL;
1884 }
1885
1886 ipv6_key.ipv6_label = htonl(ipv6_label);
1887 ipv6_key.ipv6_proto = ipv6_proto;
1888 ipv6_key.ipv6_tclass = ipv6_tclass;
1889 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1890 ipv6_key.ipv6_frag = ipv6_frag;
1891 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1892 &ipv6_key, sizeof ipv6_key);
1893
1894 ipv6_mask.ipv6_label = htonl(ipv6_label_mask);
1895 ipv6_mask.ipv6_proto = ipv6_proto_mask;
1896 ipv6_mask.ipv6_tclass = ipv6_tclass_mask;
1897 ipv6_mask.ipv6_hlimit = ipv6_hlimit_mask;
1898 ipv6_mask.ipv6_frag = ipv6_frag_mask;
1899 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1900 &ipv6_mask, sizeof ipv6_mask);
1901 return n;
1902 } else if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1903 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1904 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1905 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1906 && n > 0
1907 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1908 struct ovs_key_ipv6 ipv6_key;
1909
1910 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1911 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
1912 return -EINVAL;
1913 }
1914 ipv6_key.ipv6_label = htonl(ipv6_label);
1915 ipv6_key.ipv6_proto = ipv6_proto;
1916 ipv6_key.ipv6_tclass = ipv6_tclass;
1917 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1918 ipv6_key.ipv6_frag = ipv6_frag;
1919 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1920 &ipv6_key, sizeof ipv6_key);
1921
1922 if (mask) {
1923 memset(&ipv6_key, 0xff, sizeof ipv6_key);
1924 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1925 &ipv6_key, sizeof ipv6_key);
1926 }
1927 return n;
1928 }
1929 }
1930
1931 {
1932 int tcp_src;
1933 int tcp_dst;
1934 int tcp_src_mask;
1935 int tcp_dst_mask;
1936 int n = -1;
1937
1938 if (mask && sscanf(s, "tcp(src=%i/%i,dst=%i/%i)%n",
1939 &tcp_src, &tcp_src_mask, &tcp_dst, &tcp_dst_mask, &n) > 0
1940 && n > 0) {
1941 struct ovs_key_tcp tcp_key;
1942 struct ovs_key_tcp tcp_mask;
1943
1944 tcp_key.tcp_src = htons(tcp_src);
1945 tcp_key.tcp_dst = htons(tcp_dst);
1946 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1947
1948 tcp_mask.tcp_src = htons(tcp_src_mask);
1949 tcp_mask.tcp_dst = htons(tcp_dst_mask);
1950 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
1951 &tcp_mask, sizeof tcp_mask);
1952 return n;
1953 } else if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
1954 && n > 0) {
1955 struct ovs_key_tcp tcp_key;
1956
1957 tcp_key.tcp_src = htons(tcp_src);
1958 tcp_key.tcp_dst = htons(tcp_dst);
1959 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
1960
1961 if (mask) {
1962 memset(&tcp_key, 0xff, sizeof tcp_key);
1963 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
1964 &tcp_key, sizeof tcp_key);
1965 }
1966 return n;
1967 }
1968 }
1969
1970 {
1971 int udp_src;
1972 int udp_dst;
1973 int udp_src_mask;
1974 int udp_dst_mask;
1975 int n = -1;
1976
1977 if (mask && sscanf(s, "udp(src=%i/%i,dst=%i/%i)%n",
1978 &udp_src, &udp_src_mask,
1979 &udp_dst, &udp_dst_mask, &n) > 0 && n > 0) {
1980 struct ovs_key_udp udp_key;
1981 struct ovs_key_udp udp_mask;
1982
1983 udp_key.udp_src = htons(udp_src);
1984 udp_key.udp_dst = htons(udp_dst);
1985 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
1986
1987 udp_mask.udp_src = htons(udp_src_mask);
1988 udp_mask.udp_dst = htons(udp_dst_mask);
1989 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP,
1990 &udp_mask, sizeof udp_mask);
1991 return n;
1992 }
1993 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
1994 && n > 0) {
1995 struct ovs_key_udp udp_key;
1996
1997 udp_key.udp_src = htons(udp_src);
1998 udp_key.udp_dst = htons(udp_dst);
1999 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2000
2001 if (mask) {
2002 memset(&udp_key, 0xff, sizeof udp_key);
2003 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2004 }
2005 return n;
2006 }
2007 }
2008
2009 {
2010 int icmp_type;
2011 int icmp_code;
2012 int icmp_type_mask;
2013 int icmp_code_mask;
2014 int n = -1;
2015
2016 if (mask && sscanf(s, "icmp(type=%i/%i,code=%i/%i)%n",
2017 &icmp_type, &icmp_type_mask,
2018 &icmp_code, &icmp_code_mask, &n) > 0 && n > 0) {
2019 struct ovs_key_icmp icmp_key;
2020 struct ovs_key_icmp icmp_mask;
2021
2022 icmp_key.icmp_type = icmp_type;
2023 icmp_key.icmp_code = icmp_code;
2024 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2025 &icmp_key, sizeof icmp_key);
2026
2027 icmp_mask.icmp_type = icmp_type_mask;
2028 icmp_mask.icmp_code = icmp_code_mask;
2029 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP,
2030 &icmp_mask, sizeof icmp_mask);
2031 return n;
2032 } else if (sscanf(s, "icmp(type=%i,code=%i)%n",
2033 &icmp_type, &icmp_code, &n) > 0
2034 && n > 0) {
2035 struct ovs_key_icmp icmp_key;
2036
2037 icmp_key.icmp_type = icmp_type;
2038 icmp_key.icmp_code = icmp_code;
2039 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2040 &icmp_key, sizeof icmp_key);
2041 if (mask) {
2042 memset(&icmp_key, 0xff, sizeof icmp_key);
2043 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP, &icmp_key,
2044 sizeof icmp_key);
2045 }
2046 return n;
2047 }
2048 }
2049
2050 {
2051 struct ovs_key_icmpv6 icmpv6_key;
2052 struct ovs_key_icmpv6 icmpv6_mask;
2053 int icmpv6_type_mask;
2054 int icmpv6_code_mask;
2055 int n = -1;
2056
2057 if (mask && sscanf(s, "icmpv6(type=%"SCNi8"/%i,code=%"SCNi8"/%i)%n",
2058 &icmpv6_key.icmpv6_type, &icmpv6_type_mask,
2059 &icmpv6_key.icmpv6_code, &icmpv6_code_mask, &n) > 0
2060 && n > 0) {
2061 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2062 &icmpv6_key, sizeof icmpv6_key);
2063
2064 icmpv6_mask.icmpv6_type = icmpv6_type_mask;
2065 icmpv6_mask.icmpv6_code = icmpv6_code_mask;
2066 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_mask,
2067 sizeof icmpv6_mask);
2068 return n;
2069 } else if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
2070 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
2071 && n > 0) {
2072 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2073 &icmpv6_key, sizeof icmpv6_key);
2074
2075 if (mask) {
2076 memset(&icmpv6_key, 0xff, sizeof icmpv6_key);
2077 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_key,
2078 sizeof icmpv6_key);
2079 }
2080 return n;
2081 }
2082 }
2083
2084 {
2085 ovs_be32 arp_sip, arp_sip_mask;
2086 ovs_be32 arp_tip, arp_tip_mask;
2087 int arp_op, arp_op_mask;
2088 uint8_t arp_sha[ETH_ADDR_LEN];
2089 uint8_t arp_sha_mask[ETH_ADDR_LEN];
2090 uint8_t arp_tha[ETH_ADDR_LEN];
2091 uint8_t arp_tha_mask[ETH_ADDR_LEN];
2092 int n = -1;
2093
2094 if (mask && sscanf(s, "arp(sip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2095 "tip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2096 "op=%i/%i,sha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2097 "tha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2098 IP_SCAN_ARGS(&arp_sip), IP_SCAN_ARGS(&arp_sip_mask),
2099 IP_SCAN_ARGS(&arp_tip), IP_SCAN_ARGS(&arp_tip_mask),
2100 &arp_op, &arp_op_mask,
2101 ETH_ADDR_SCAN_ARGS(arp_sha),
2102 ETH_ADDR_SCAN_ARGS(arp_sha_mask),
2103 ETH_ADDR_SCAN_ARGS(arp_tha),
2104 ETH_ADDR_SCAN_ARGS(arp_tha_mask), &n) > 0 && n > 0) {
2105 struct ovs_key_arp arp_key;
2106 struct ovs_key_arp arp_mask;
2107
2108 memset(&arp_key, 0, sizeof arp_key);
2109 arp_key.arp_sip = arp_sip;
2110 arp_key.arp_tip = arp_tip;
2111 arp_key.arp_op = htons(arp_op);
2112 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
2113 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
2114 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2115
2116 arp_mask.arp_sip = arp_sip_mask;
2117 arp_mask.arp_tip = arp_tip_mask;
2118 arp_mask.arp_op = htons(arp_op_mask);
2119 memcpy(arp_mask.arp_sha, arp_sha_mask, ETH_ADDR_LEN);
2120 memcpy(arp_mask.arp_tha, arp_tha_mask, ETH_ADDR_LEN);
2121 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2122 &arp_mask, sizeof arp_mask);
2123 return n;
2124 } else if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
2125 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
2126 IP_SCAN_ARGS(&arp_sip),
2127 IP_SCAN_ARGS(&arp_tip),
2128 &arp_op,
2129 ETH_ADDR_SCAN_ARGS(arp_sha),
2130 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
2131 struct ovs_key_arp arp_key;
2132
2133 memset(&arp_key, 0, sizeof arp_key);
2134 arp_key.arp_sip = arp_sip;
2135 arp_key.arp_tip = arp_tip;
2136 arp_key.arp_op = htons(arp_op);
2137 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
2138 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
2139 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2140
2141 if (mask) {
2142 memset(&arp_key, 0xff, sizeof arp_key);
2143 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2144 &arp_key, sizeof arp_key);
2145 }
2146 return n;
2147 }
2148 }
2149
2150 {
2151 char nd_target_s[IPV6_SCAN_LEN + 1];
2152 char nd_target_mask_s[IPV6_SCAN_LEN + 1];
2153 uint8_t nd_sll[ETH_ADDR_LEN];
2154 uint8_t nd_sll_mask[ETH_ADDR_LEN];
2155 uint8_t nd_tll[ETH_ADDR_LEN];
2156 uint8_t nd_tll_mask[ETH_ADDR_LEN];
2157 int n = -1;
2158
2159 nd_target_mask_s[0] = 0;
2160 memset(nd_sll_mask, 0xff, sizeof nd_sll_mask);
2161 memset(nd_tll_mask, 0xff, sizeof nd_tll_mask);
2162
2163 if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT")%n",
2164 nd_target_s, nd_target_mask_s, &n) > 0 && n > 0) {
2165 put_nd_key(n, nd_target_s, NULL, NULL, key);
2166 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2167 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
2168 nd_target_s, &n) > 0 && n > 0) {
2169 put_nd_key(n, nd_target_s, NULL, NULL, key);
2170 if (mask) {
2171 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2172 }
2173 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2174 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2175 nd_target_s, nd_target_mask_s,
2176 ETH_ADDR_SCAN_ARGS(nd_sll),
2177 ETH_ADDR_SCAN_ARGS(nd_sll_mask), &n) > 0 && n > 0) {
2178 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2179 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2180 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
2181 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
2182 && n > 0) {
2183 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2184 if (mask) {
2185 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2186 }
2187 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2188 ",tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2189 nd_target_s, nd_target_mask_s,
2190 ETH_ADDR_SCAN_ARGS(nd_tll),
2191 ETH_ADDR_SCAN_ARGS(nd_tll_mask), &n) > 0 && n > 0) {
2192 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2193 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2194 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
2195 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
2196 && n > 0) {
2197 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2198 if (mask) {
2199 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2200 }
2201 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2202 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2203 "tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2204 nd_target_s, nd_target_mask_s,
2205 ETH_ADDR_SCAN_ARGS(nd_sll), ETH_ADDR_SCAN_ARGS(nd_sll_mask),
2206 ETH_ADDR_SCAN_ARGS(nd_tll), ETH_ADDR_SCAN_ARGS(nd_tll_mask),
2207 &n) > 0
2208 && n > 0) {
2209 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2210 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2211 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
2212 "tll="ETH_ADDR_SCAN_FMT")%n",
2213 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
2214 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
2215 && n > 0) {
2216 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2217 if (mask) {
2218 put_nd_mask(n, nd_target_mask_s,
2219 nd_sll_mask, nd_tll_mask, mask);
2220 }
2221 }
2222
2223 if (n != -1)
2224 return n;
2225
2226 }
2227
2228 if (!strncmp(s, "encap(", 6)) {
2229 const char *start = s;
2230 size_t encap, encap_mask = 0;
2231
2232 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
2233 if (mask) {
2234 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
2235 }
2236
2237 s += 6;
2238 for (;;) {
2239 int retval;
2240
2241 s += strspn(s, ", \t\r\n");
2242 if (!*s) {
2243 return -EINVAL;
2244 } else if (*s == ')') {
2245 break;
2246 }
2247
2248 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2249 if (retval < 0) {
2250 return retval;
2251 }
2252 s += retval;
2253 }
2254 s++;
2255
2256 nl_msg_end_nested(key, encap);
2257 if (mask) {
2258 nl_msg_end_nested(mask, encap_mask);
2259 }
2260
2261 return s - start;
2262 }
2263
2264 return -EINVAL;
2265 }
2266
2267 /* Parses the string representation of a datapath flow key, in the
2268 * format output by odp_flow_key_format(). Returns 0 if successful,
2269 * otherwise a positive errno value. On success, the flow key is
2270 * appended to 'key' as a series of Netlink attributes. On failure, no
2271 * data is appended to 'key'. Either way, 'key''s data might be
2272 * reallocated.
2273 *
2274 * If 'port_names' is nonnull, it points to an simap that maps from a port name
2275 * to a port number. (Port names may be used instead of port numbers in
2276 * in_port.)
2277 *
2278 * On success, the attributes appended to 'key' are individually syntactically
2279 * valid, but they may not be valid as a sequence. 'key' might, for example,
2280 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
2281 int
2282 odp_flow_from_string(const char *s, const struct simap *port_names,
2283 struct ofpbuf *key, struct ofpbuf *mask)
2284 {
2285 const size_t old_size = key->size;
2286 for (;;) {
2287 int retval;
2288
2289 s += strspn(s, delimiters);
2290 if (!*s) {
2291 return 0;
2292 }
2293
2294 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2295 if (retval < 0) {
2296 key->size = old_size;
2297 return -retval;
2298 }
2299 s += retval;
2300 }
2301
2302 return 0;
2303 }
2304
2305 static uint8_t
2306 ovs_to_odp_frag(uint8_t nw_frag)
2307 {
2308 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
2309 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
2310 : OVS_FRAG_TYPE_LATER);
2311 }
2312
2313 static void
2314 odp_flow_key_from_flow__(struct ofpbuf *buf, const struct flow *data,
2315 const struct flow *flow, odp_port_t odp_in_port)
2316 {
2317 bool is_mask;
2318 struct ovs_key_ethernet *eth_key;
2319 size_t encap;
2320
2321 /* We assume that if 'data' and 'flow' are not the same, we should
2322 * treat 'data' as a mask. */
2323 is_mask = (data != flow);
2324
2325 if (flow->skb_priority) {
2326 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
2327 }
2328
2329 if (flow->tunnel.ip_dst) {
2330 tun_key_to_attr(buf, &data->tunnel);
2331 }
2332
2333 if (flow->skb_mark) {
2334 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->skb_mark);
2335 }
2336
2337 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
2338 * is not the magical value "ODPP_NONE". */
2339 if (is_mask || odp_in_port != ODPP_NONE) {
2340 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
2341 }
2342
2343 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
2344 sizeof *eth_key);
2345 memcpy(eth_key->eth_src, data->dl_src, ETH_ADDR_LEN);
2346 memcpy(eth_key->eth_dst, data->dl_dst, ETH_ADDR_LEN);
2347
2348 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
2349 if (is_mask) {
2350 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(UINT16_MAX));
2351 } else {
2352 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
2353 }
2354 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
2355 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
2356 if (flow->vlan_tci == htons(0)) {
2357 goto unencap;
2358 }
2359 } else {
2360 encap = 0;
2361 }
2362
2363 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2364 /* For backwards compatibility with kernels that don't support
2365 * wildcarding, the following convention is used to encode the
2366 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
2367 *
2368 * key mask matches
2369 * -------- -------- -------
2370 * >0x5ff 0xffff Specified Ethernet II Ethertype.
2371 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
2372 * <none> 0xffff Any non-Ethernet II frame (except valid
2373 * 802.3 SNAP packet with valid eth_type).
2374 */
2375 if (is_mask) {
2376 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2377 }
2378 goto unencap;
2379 }
2380
2381 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2382
2383 if (flow->dl_type == htons(ETH_TYPE_IP)) {
2384 struct ovs_key_ipv4 *ipv4_key;
2385
2386 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
2387 sizeof *ipv4_key);
2388 ipv4_key->ipv4_src = data->nw_src;
2389 ipv4_key->ipv4_dst = data->nw_dst;
2390 ipv4_key->ipv4_proto = data->nw_proto;
2391 ipv4_key->ipv4_tos = data->nw_tos;
2392 ipv4_key->ipv4_ttl = data->nw_ttl;
2393 ipv4_key->ipv4_frag = ovs_to_odp_frag(data->nw_frag);
2394 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2395 struct ovs_key_ipv6 *ipv6_key;
2396
2397 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
2398 sizeof *ipv6_key);
2399 memcpy(ipv6_key->ipv6_src, &data->ipv6_src, sizeof ipv6_key->ipv6_src);
2400 memcpy(ipv6_key->ipv6_dst, &data->ipv6_dst, sizeof ipv6_key->ipv6_dst);
2401 ipv6_key->ipv6_label = data->ipv6_label;
2402 ipv6_key->ipv6_proto = data->nw_proto;
2403 ipv6_key->ipv6_tclass = data->nw_tos;
2404 ipv6_key->ipv6_hlimit = data->nw_ttl;
2405 ipv6_key->ipv6_frag = ovs_to_odp_frag(flow->nw_frag);
2406 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2407 flow->dl_type == htons(ETH_TYPE_RARP)) {
2408 struct ovs_key_arp *arp_key;
2409
2410 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
2411 sizeof *arp_key);
2412 memset(arp_key, 0, sizeof *arp_key);
2413 arp_key->arp_sip = data->nw_src;
2414 arp_key->arp_tip = data->nw_dst;
2415 arp_key->arp_op = htons(data->nw_proto);
2416 memcpy(arp_key->arp_sha, data->arp_sha, ETH_ADDR_LEN);
2417 memcpy(arp_key->arp_tha, data->arp_tha, ETH_ADDR_LEN);
2418 }
2419
2420 if (flow->mpls_depth) {
2421 struct ovs_key_mpls *mpls_key;
2422
2423 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
2424 sizeof *mpls_key);
2425 mpls_key->mpls_lse = data->mpls_lse;
2426 }
2427
2428 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2429 if (flow->nw_proto == IPPROTO_TCP) {
2430 struct ovs_key_tcp *tcp_key;
2431
2432 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
2433 sizeof *tcp_key);
2434 tcp_key->tcp_src = data->tp_src;
2435 tcp_key->tcp_dst = data->tp_dst;
2436 } else if (flow->nw_proto == IPPROTO_UDP) {
2437 struct ovs_key_udp *udp_key;
2438
2439 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
2440 sizeof *udp_key);
2441 udp_key->udp_src = data->tp_src;
2442 udp_key->udp_dst = data->tp_dst;
2443 } else if (flow->dl_type == htons(ETH_TYPE_IP)
2444 && flow->nw_proto == IPPROTO_ICMP) {
2445 struct ovs_key_icmp *icmp_key;
2446
2447 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
2448 sizeof *icmp_key);
2449 icmp_key->icmp_type = ntohs(data->tp_src);
2450 icmp_key->icmp_code = ntohs(data->tp_dst);
2451 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
2452 && flow->nw_proto == IPPROTO_ICMPV6) {
2453 struct ovs_key_icmpv6 *icmpv6_key;
2454
2455 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
2456 sizeof *icmpv6_key);
2457 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
2458 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
2459
2460 if (icmpv6_key->icmpv6_type == ND_NEIGHBOR_SOLICIT
2461 || icmpv6_key->icmpv6_type == ND_NEIGHBOR_ADVERT) {
2462 struct ovs_key_nd *nd_key;
2463
2464 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
2465 sizeof *nd_key);
2466 memcpy(nd_key->nd_target, &data->nd_target,
2467 sizeof nd_key->nd_target);
2468 memcpy(nd_key->nd_sll, data->arp_sha, ETH_ADDR_LEN);
2469 memcpy(nd_key->nd_tll, data->arp_tha, ETH_ADDR_LEN);
2470 }
2471 }
2472 }
2473
2474 unencap:
2475 if (encap) {
2476 nl_msg_end_nested(buf, encap);
2477 }
2478 }
2479
2480 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
2481 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
2482 * number rather than a datapath port number). Instead, if 'odp_in_port'
2483 * is anything other than ODPP_NONE, it is included in 'buf' as the input
2484 * port.
2485 *
2486 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2487 * capable of being expanded to allow for that much space. */
2488 void
2489 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
2490 odp_port_t odp_in_port)
2491 {
2492 odp_flow_key_from_flow__(buf, flow, flow, odp_in_port);
2493 }
2494
2495 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
2496 * 'buf'. 'flow' is used as a template to determine how to interpret
2497 * 'mask'. For example, the 'dl_type' of 'mask' describes the mask, but
2498 * it doesn't indicate whether the other fields should be interpreted as
2499 * ARP, IPv4, IPv6, etc.
2500 *
2501 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2502 * capable of being expanded to allow for that much space. */
2503 void
2504 odp_flow_key_from_mask(struct ofpbuf *buf, const struct flow *mask,
2505 const struct flow *flow, uint32_t odp_in_port_mask)
2506 {
2507 odp_flow_key_from_flow__(buf, mask, flow, u32_to_odp(odp_in_port_mask));
2508 }
2509
2510 uint32_t
2511 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
2512 {
2513 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
2514 return hash_words((const uint32_t *) key, key_len / sizeof(uint32_t), 0);
2515 }
2516
2517 static void
2518 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
2519 uint64_t attrs, int out_of_range_attr,
2520 const struct nlattr *key, size_t key_len)
2521 {
2522 struct ds s;
2523 int i;
2524
2525 if (VLOG_DROP_DBG(rl)) {
2526 return;
2527 }
2528
2529 ds_init(&s);
2530 for (i = 0; i < 64; i++) {
2531 if (attrs & (UINT64_C(1) << i)) {
2532 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2533
2534 ds_put_format(&s, " %s",
2535 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
2536 }
2537 }
2538 if (out_of_range_attr) {
2539 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
2540 }
2541
2542 ds_put_cstr(&s, ": ");
2543 odp_flow_key_format(key, key_len, &s);
2544
2545 VLOG_DBG("%s:%s", title, ds_cstr(&s));
2546 ds_destroy(&s);
2547 }
2548
2549 static bool
2550 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
2551 {
2552 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2553
2554 if (odp_frag > OVS_FRAG_TYPE_LATER) {
2555 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
2556 return false;
2557 }
2558
2559 if (odp_frag != OVS_FRAG_TYPE_NONE) {
2560 flow->nw_frag |= FLOW_NW_FRAG_ANY;
2561 if (odp_frag == OVS_FRAG_TYPE_LATER) {
2562 flow->nw_frag |= FLOW_NW_FRAG_LATER;
2563 }
2564 }
2565 return true;
2566 }
2567
2568 static bool
2569 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
2570 const struct nlattr *attrs[], uint64_t *present_attrsp,
2571 int *out_of_range_attrp)
2572 {
2573 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2574 const struct nlattr *nla;
2575 uint64_t present_attrs;
2576 size_t left;
2577
2578 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
2579 present_attrs = 0;
2580 *out_of_range_attrp = 0;
2581 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2582 uint16_t type = nl_attr_type(nla);
2583 size_t len = nl_attr_get_size(nla);
2584 int expected_len = odp_flow_key_attr_len(type);
2585
2586 if (len != expected_len && expected_len >= 0) {
2587 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2588
2589 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
2590 "length %d", ovs_key_attr_to_string(type, namebuf,
2591 sizeof namebuf),
2592 len, expected_len);
2593 return false;
2594 }
2595
2596 if (type > OVS_KEY_ATTR_MAX) {
2597 *out_of_range_attrp = type;
2598 } else {
2599 if (present_attrs & (UINT64_C(1) << type)) {
2600 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2601
2602 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
2603 ovs_key_attr_to_string(type,
2604 namebuf, sizeof namebuf));
2605 return false;
2606 }
2607
2608 present_attrs |= UINT64_C(1) << type;
2609 attrs[type] = nla;
2610 }
2611 }
2612 if (left) {
2613 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
2614 return false;
2615 }
2616
2617 *present_attrsp = present_attrs;
2618 return true;
2619 }
2620
2621 static enum odp_key_fitness
2622 check_expectations(uint64_t present_attrs, int out_of_range_attr,
2623 uint64_t expected_attrs,
2624 const struct nlattr *key, size_t key_len)
2625 {
2626 uint64_t missing_attrs;
2627 uint64_t extra_attrs;
2628
2629 missing_attrs = expected_attrs & ~present_attrs;
2630 if (missing_attrs) {
2631 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2632 log_odp_key_attributes(&rl, "expected but not present",
2633 missing_attrs, 0, key, key_len);
2634 return ODP_FIT_TOO_LITTLE;
2635 }
2636
2637 extra_attrs = present_attrs & ~expected_attrs;
2638 if (extra_attrs || out_of_range_attr) {
2639 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2640 log_odp_key_attributes(&rl, "present but not expected",
2641 extra_attrs, out_of_range_attr, key, key_len);
2642 return ODP_FIT_TOO_MUCH;
2643 }
2644
2645 return ODP_FIT_PERFECT;
2646 }
2647
2648 static bool
2649 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2650 uint64_t present_attrs, uint64_t *expected_attrs,
2651 struct flow *flow)
2652 {
2653 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2654
2655 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
2656 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
2657 if (ntohs(flow->dl_type) < 1536) {
2658 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
2659 ntohs(flow->dl_type));
2660 return false;
2661 }
2662 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
2663 } else {
2664 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
2665 }
2666 return true;
2667 }
2668
2669 static enum odp_key_fitness
2670 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2671 uint64_t present_attrs, int out_of_range_attr,
2672 uint64_t expected_attrs, struct flow *flow,
2673 const struct nlattr *key, size_t key_len)
2674 {
2675 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2676
2677 if (eth_type_mpls(flow->dl_type)) {
2678 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2679
2680 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS))) {
2681 return ODP_FIT_TOO_LITTLE;
2682 }
2683 flow->mpls_lse = nl_attr_get_be32(attrs[OVS_KEY_ATTR_MPLS]);
2684 flow->mpls_depth++;
2685 } else if (flow->dl_type == htons(ETH_TYPE_IP)) {
2686 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
2687 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
2688 const struct ovs_key_ipv4 *ipv4_key;
2689
2690 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
2691 flow->nw_src = ipv4_key->ipv4_src;
2692 flow->nw_dst = ipv4_key->ipv4_dst;
2693 flow->nw_proto = ipv4_key->ipv4_proto;
2694 flow->nw_tos = ipv4_key->ipv4_tos;
2695 flow->nw_ttl = ipv4_key->ipv4_ttl;
2696 if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
2697 return ODP_FIT_ERROR;
2698 }
2699 }
2700 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2701 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
2702 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
2703 const struct ovs_key_ipv6 *ipv6_key;
2704
2705 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
2706 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
2707 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
2708 flow->ipv6_label = ipv6_key->ipv6_label;
2709 flow->nw_proto = ipv6_key->ipv6_proto;
2710 flow->nw_tos = ipv6_key->ipv6_tclass;
2711 flow->nw_ttl = ipv6_key->ipv6_hlimit;
2712 if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
2713 return ODP_FIT_ERROR;
2714 }
2715 }
2716 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2717 flow->dl_type == htons(ETH_TYPE_RARP)) {
2718 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
2719 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
2720 const struct ovs_key_arp *arp_key;
2721
2722 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
2723 flow->nw_src = arp_key->arp_sip;
2724 flow->nw_dst = arp_key->arp_tip;
2725 if (arp_key->arp_op & htons(0xff00)) {
2726 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
2727 "key", ntohs(arp_key->arp_op));
2728 return ODP_FIT_ERROR;
2729 }
2730 flow->nw_proto = ntohs(arp_key->arp_op);
2731 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
2732 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
2733 }
2734 }
2735
2736 if (flow->nw_proto == IPPROTO_TCP
2737 && (flow->dl_type == htons(ETH_TYPE_IP) ||
2738 flow->dl_type == htons(ETH_TYPE_IPV6))
2739 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2740 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
2741 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
2742 const struct ovs_key_tcp *tcp_key;
2743
2744 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
2745 flow->tp_src = tcp_key->tcp_src;
2746 flow->tp_dst = tcp_key->tcp_dst;
2747 }
2748 } else if (flow->nw_proto == IPPROTO_UDP
2749 && (flow->dl_type == htons(ETH_TYPE_IP) ||
2750 flow->dl_type == htons(ETH_TYPE_IPV6))
2751 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2752 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
2753 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
2754 const struct ovs_key_udp *udp_key;
2755
2756 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
2757 flow->tp_src = udp_key->udp_src;
2758 flow->tp_dst = udp_key->udp_dst;
2759 }
2760 } else if (flow->nw_proto == IPPROTO_ICMP
2761 && flow->dl_type == htons(ETH_TYPE_IP)
2762 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2763 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
2764 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
2765 const struct ovs_key_icmp *icmp_key;
2766
2767 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
2768 flow->tp_src = htons(icmp_key->icmp_type);
2769 flow->tp_dst = htons(icmp_key->icmp_code);
2770 }
2771 } else if (flow->nw_proto == IPPROTO_ICMPV6
2772 && flow->dl_type == htons(ETH_TYPE_IPV6)
2773 && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2774 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
2775 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
2776 const struct ovs_key_icmpv6 *icmpv6_key;
2777
2778 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
2779 flow->tp_src = htons(icmpv6_key->icmpv6_type);
2780 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
2781
2782 if (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
2783 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) {
2784 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
2785 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
2786 const struct ovs_key_nd *nd_key;
2787
2788 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
2789 memcpy(&flow->nd_target, nd_key->nd_target,
2790 sizeof flow->nd_target);
2791 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
2792 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
2793 }
2794 }
2795 }
2796 }
2797
2798 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
2799 key, key_len);
2800 }
2801
2802 /* Parse 802.1Q header then encapsulated L3 attributes. */
2803 static enum odp_key_fitness
2804 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2805 uint64_t present_attrs, int out_of_range_attr,
2806 uint64_t expected_attrs, struct flow *flow,
2807 const struct nlattr *key, size_t key_len)
2808 {
2809 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2810
2811 const struct nlattr *encap
2812 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
2813 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
2814 enum odp_key_fitness encap_fitness;
2815 enum odp_key_fitness fitness;
2816 ovs_be16 tci;
2817
2818 /* Calculate fitness of outer attributes. */
2819 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
2820 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
2821 fitness = check_expectations(present_attrs, out_of_range_attr,
2822 expected_attrs, key, key_len);
2823
2824 /* Get the VLAN TCI value. */
2825 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
2826 return ODP_FIT_TOO_LITTLE;
2827 }
2828 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
2829 if (tci == htons(0)) {
2830 /* Corner case for a truncated 802.1Q header. */
2831 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
2832 return ODP_FIT_TOO_MUCH;
2833 }
2834 return fitness;
2835 } else if (!(tci & htons(VLAN_CFI))) {
2836 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
2837 "but CFI bit is not set", ntohs(tci));
2838 return ODP_FIT_ERROR;
2839 }
2840
2841 /* Set vlan_tci.
2842 * Remove the TPID from dl_type since it's not the real Ethertype. */
2843 flow->vlan_tci = tci;
2844 flow->dl_type = htons(0);
2845
2846 /* Now parse the encapsulated attributes. */
2847 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
2848 attrs, &present_attrs, &out_of_range_attr)) {
2849 return ODP_FIT_ERROR;
2850 }
2851 expected_attrs = 0;
2852
2853 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
2854 return ODP_FIT_ERROR;
2855 }
2856 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
2857 expected_attrs, flow, key, key_len);
2858
2859 /* The overall fitness is the worse of the outer and inner attributes. */
2860 return MAX(fitness, encap_fitness);
2861 }
2862
2863 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
2864 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
2865 * 'key' fits our expectations for what a flow key should contain.
2866 *
2867 * The 'in_port' will be the datapath's understanding of the port. The
2868 * caller will need to translate with odp_port_to_ofp_port() if the
2869 * OpenFlow port is needed.
2870 *
2871 * This function doesn't take the packet itself as an argument because none of
2872 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
2873 * it is always possible to infer which additional attribute(s) should appear
2874 * by looking at the attributes for lower-level protocols, e.g. if the network
2875 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
2876 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
2877 * must be absent. */
2878 enum odp_key_fitness
2879 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
2880 struct flow *flow)
2881 {
2882 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
2883 uint64_t expected_attrs;
2884 uint64_t present_attrs;
2885 int out_of_range_attr;
2886
2887 memset(flow, 0, sizeof *flow);
2888
2889 /* Parse attributes. */
2890 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
2891 &out_of_range_attr)) {
2892 return ODP_FIT_ERROR;
2893 }
2894 expected_attrs = 0;
2895
2896 /* Metadata. */
2897 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
2898 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
2899 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
2900 }
2901
2902 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
2903 flow->skb_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
2904 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
2905 }
2906
2907 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
2908 enum odp_key_fitness res;
2909
2910 res = odp_tun_key_from_attr(attrs[OVS_KEY_ATTR_TUNNEL], &flow->tunnel);
2911 if (res == ODP_FIT_ERROR) {
2912 return ODP_FIT_ERROR;
2913 } else if (res == ODP_FIT_PERFECT) {
2914 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
2915 }
2916 }
2917
2918 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
2919 flow->in_port.odp_port
2920 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
2921 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
2922 } else {
2923 flow->in_port.odp_port = ODPP_NONE;
2924 }
2925
2926 /* Ethernet header. */
2927 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
2928 const struct ovs_key_ethernet *eth_key;
2929
2930 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
2931 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
2932 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
2933 }
2934 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
2935
2936 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
2937 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow)) {
2938 return ODP_FIT_ERROR;
2939 }
2940
2941 if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
2942 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
2943 expected_attrs, flow, key, key_len);
2944 }
2945 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
2946 expected_attrs, flow, key, key_len);
2947 }
2948
2949 /* Returns 'fitness' as a string, for use in debug messages. */
2950 const char *
2951 odp_key_fitness_to_string(enum odp_key_fitness fitness)
2952 {
2953 switch (fitness) {
2954 case ODP_FIT_PERFECT:
2955 return "OK";
2956 case ODP_FIT_TOO_MUCH:
2957 return "too_much";
2958 case ODP_FIT_TOO_LITTLE:
2959 return "too_little";
2960 case ODP_FIT_ERROR:
2961 return "error";
2962 default:
2963 return "<unknown>";
2964 }
2965 }
2966
2967 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
2968 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
2969 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
2970 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
2971 * null, then the return value is not meaningful.) */
2972 size_t
2973 odp_put_userspace_action(uint32_t pid,
2974 const void *userdata, size_t userdata_size,
2975 struct ofpbuf *odp_actions)
2976 {
2977 size_t userdata_ofs;
2978 size_t offset;
2979
2980 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
2981 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
2982 if (userdata) {
2983 userdata_ofs = odp_actions->size + NLA_HDRLEN;
2984 nl_msg_put_unspec(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
2985 userdata, userdata_size);
2986 } else {
2987 userdata_ofs = 0;
2988 }
2989 nl_msg_end_nested(odp_actions, offset);
2990
2991 return userdata_ofs;
2992 }
2993
2994 void
2995 odp_put_tunnel_action(const struct flow_tnl *tunnel,
2996 struct ofpbuf *odp_actions)
2997 {
2998 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
2999 tun_key_to_attr(odp_actions, tunnel);
3000 nl_msg_end_nested(odp_actions, offset);
3001 }
3002 \f
3003 /* The commit_odp_actions() function and its helpers. */
3004
3005 static void
3006 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
3007 const void *key, size_t key_size)
3008 {
3009 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3010 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
3011 nl_msg_end_nested(odp_actions, offset);
3012 }
3013
3014 void
3015 odp_put_skb_mark_action(const uint32_t skb_mark,
3016 struct ofpbuf *odp_actions)
3017 {
3018 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK, &skb_mark,
3019 sizeof(skb_mark));
3020 }
3021
3022 /* If any of the flow key data that ODP actions can modify are different in
3023 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
3024 * 'odp_actions' that change the flow tunneling information in key from
3025 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
3026 * same way. In other words, operates the same as commit_odp_actions(), but
3027 * only on tunneling information. */
3028 void
3029 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
3030 struct ofpbuf *odp_actions)
3031 {
3032 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
3033 if (flow->tunnel.ip_dst) {
3034 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
3035 return;
3036 }
3037 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
3038 odp_put_tunnel_action(&base->tunnel, odp_actions);
3039 }
3040 }
3041
3042 static void
3043 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
3044 struct ofpbuf *odp_actions,
3045 struct flow_wildcards *wc)
3046 {
3047 struct ovs_key_ethernet eth_key;
3048
3049 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
3050 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
3051 return;
3052 }
3053
3054 memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
3055 memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
3056
3057 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
3058 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
3059
3060 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
3061 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
3062
3063 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
3064 &eth_key, sizeof(eth_key));
3065 }
3066
3067 static void
3068 commit_vlan_action(const struct flow *flow, struct flow *base,
3069 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3070 {
3071 if (base->vlan_tci == flow->vlan_tci) {
3072 return;
3073 }
3074
3075 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
3076
3077 if (base->vlan_tci & htons(VLAN_CFI)) {
3078 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3079 }
3080
3081 if (flow->vlan_tci & htons(VLAN_CFI)) {
3082 struct ovs_action_push_vlan vlan;
3083
3084 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
3085 vlan.vlan_tci = flow->vlan_tci;
3086 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3087 &vlan, sizeof vlan);
3088 }
3089 base->vlan_tci = flow->vlan_tci;
3090 }
3091
3092 static void
3093 commit_mpls_action(const struct flow *flow, struct flow *base,
3094 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3095 {
3096 if (flow->mpls_lse == base->mpls_lse &&
3097 flow->mpls_depth == base->mpls_depth) {
3098 return;
3099 }
3100
3101 memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse);
3102
3103 if (flow->mpls_depth < base->mpls_depth) {
3104 if (base->mpls_depth - flow->mpls_depth > 1) {
3105 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
3106 VLOG_WARN_RL(&rl, "Multiple mpls_pop actions reduced to "
3107 " a single mpls_pop action");
3108 }
3109
3110 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, flow->dl_type);
3111 } else if (flow->mpls_depth > base->mpls_depth) {
3112 struct ovs_action_push_mpls *mpls;
3113
3114 if (flow->mpls_depth - base->mpls_depth > 1) {
3115 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
3116 VLOG_WARN_RL(&rl, "Multiple mpls_push actions reduced to "
3117 " a single mpls_push action");
3118 }
3119
3120 mpls = nl_msg_put_unspec_uninit(odp_actions, OVS_ACTION_ATTR_PUSH_MPLS,
3121 sizeof *mpls);
3122 memset(mpls, 0, sizeof *mpls);
3123 mpls->mpls_ethertype = flow->dl_type;
3124 mpls->mpls_lse = flow->mpls_lse;
3125 } else {
3126 struct ovs_key_mpls mpls_key;
3127
3128 mpls_key.mpls_lse = flow->mpls_lse;
3129 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
3130 &mpls_key, sizeof(mpls_key));
3131 }
3132
3133 base->dl_type = flow->dl_type;
3134 base->mpls_lse = flow->mpls_lse;
3135 base->mpls_depth = flow->mpls_depth;
3136 }
3137
3138 static void
3139 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
3140 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3141 {
3142 struct ovs_key_ipv4 ipv4_key;
3143
3144 if (base->nw_src == flow->nw_src &&
3145 base->nw_dst == flow->nw_dst &&
3146 base->nw_tos == flow->nw_tos &&
3147 base->nw_ttl == flow->nw_ttl &&
3148 base->nw_frag == flow->nw_frag) {
3149 return;
3150 }
3151
3152 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3153 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3154 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3155 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3156 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3157 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3158
3159 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
3160 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
3161 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
3162 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
3163 ipv4_key.ipv4_proto = base->nw_proto;
3164 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
3165
3166 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
3167 &ipv4_key, sizeof(ipv4_key));
3168 }
3169
3170 static void
3171 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
3172 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3173 {
3174 struct ovs_key_ipv6 ipv6_key;
3175
3176 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
3177 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
3178 base->ipv6_label == flow->ipv6_label &&
3179 base->nw_tos == flow->nw_tos &&
3180 base->nw_ttl == flow->nw_ttl &&
3181 base->nw_frag == flow->nw_frag) {
3182 return;
3183 }
3184
3185 memset(&wc->masks.ipv6_src, 0xff, sizeof wc->masks.ipv6_src);
3186 memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst);
3187 memset(&wc->masks.ipv6_label, 0xff, sizeof wc->masks.ipv6_label);
3188 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3189 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3190 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3191 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3192
3193 base->ipv6_src = flow->ipv6_src;
3194 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
3195 base->ipv6_dst = flow->ipv6_dst;
3196 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
3197
3198 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
3199 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
3200 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
3201 ipv6_key.ipv6_proto = base->nw_proto;
3202 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
3203
3204 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
3205 &ipv6_key, sizeof(ipv6_key));
3206 }
3207
3208 static void
3209 commit_set_nw_action(const struct flow *flow, struct flow *base,
3210 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3211 {
3212 /* Check if flow really have an IP header. */
3213 if (!flow->nw_proto) {
3214 return;
3215 }
3216
3217 if (base->dl_type == htons(ETH_TYPE_IP)) {
3218 commit_set_ipv4_action(flow, base, odp_actions, wc);
3219 } else if (base->dl_type == htons(ETH_TYPE_IPV6)) {
3220 commit_set_ipv6_action(flow, base, odp_actions, wc);
3221 }
3222 }
3223
3224 static void
3225 commit_set_port_action(const struct flow *flow, struct flow *base,
3226 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3227 {
3228 if (!is_ip_any(base) || (!base->tp_src && !base->tp_dst)) {
3229 return;
3230 }
3231
3232 if (base->tp_src == flow->tp_src &&
3233 base->tp_dst == flow->tp_dst) {
3234 return;
3235 }
3236
3237 memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
3238 memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
3239
3240 if (flow->nw_proto == IPPROTO_TCP) {
3241 struct ovs_key_tcp port_key;
3242
3243 port_key.tcp_src = base->tp_src = flow->tp_src;
3244 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
3245
3246 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
3247 &port_key, sizeof(port_key));
3248
3249 } else if (flow->nw_proto == IPPROTO_UDP) {
3250 struct ovs_key_udp port_key;
3251
3252 port_key.udp_src = base->tp_src = flow->tp_src;
3253 port_key.udp_dst = base->tp_dst = flow->tp_dst;
3254
3255 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
3256 &port_key, sizeof(port_key));
3257 }
3258 }
3259
3260 static void
3261 commit_set_priority_action(const struct flow *flow, struct flow *base,
3262 struct ofpbuf *odp_actions,
3263 struct flow_wildcards *wc)
3264 {
3265 if (base->skb_priority == flow->skb_priority) {
3266 return;
3267 }
3268
3269 memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
3270 base->skb_priority = flow->skb_priority;
3271
3272 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
3273 &base->skb_priority, sizeof(base->skb_priority));
3274 }
3275
3276 static void
3277 commit_set_skb_mark_action(const struct flow *flow, struct flow *base,
3278 struct ofpbuf *odp_actions,
3279 struct flow_wildcards *wc)
3280 {
3281 if (base->skb_mark == flow->skb_mark) {
3282 return;
3283 }
3284
3285 memset(&wc->masks.skb_mark, 0xff, sizeof wc->masks.skb_mark);
3286 base->skb_mark = flow->skb_mark;
3287
3288 odp_put_skb_mark_action(base->skb_mark, odp_actions);
3289 }
3290 /* If any of the flow key data that ODP actions can modify are different in
3291 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
3292 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
3293 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
3294 * in addition to this function if needed. Sets fields in 'wc' that are
3295 * used as part of the action. */
3296 void
3297 commit_odp_actions(const struct flow *flow, struct flow *base,
3298 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3299 {
3300 commit_set_ether_addr_action(flow, base, odp_actions, wc);
3301 commit_vlan_action(flow, base, odp_actions, wc);
3302 commit_set_nw_action(flow, base, odp_actions, wc);
3303 commit_set_port_action(flow, base, odp_actions, wc);
3304 /* Committing MPLS actions should occur after committing nw and port
3305 * actions. This is because committing MPLS actions may alter a packet so
3306 * that it is no longer IP and thus nw and port actions are no longer valid.
3307 */
3308 commit_mpls_action(flow, base, odp_actions, wc);
3309 commit_set_priority_action(flow, base, odp_actions, wc);
3310 commit_set_skb_mark_action(flow, base, odp_actions, wc);
3311 }
openvswitch packages for PVE