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odp-util: Fix formatting of ipfix action cookies, to fix a testsuite failure
[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,
55 const struct hmap *portno_names, struct ds *ds,
56 bool verbose);
57
58 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
59 * 'type':
60 *
61 * - For an action whose argument has a fixed length, returned that
62 * nonnegative length in bytes.
63 *
64 * - For an action with a variable-length argument, returns -2.
65 *
66 * - For an invalid 'type', returns -1. */
67 static int
68 odp_action_len(uint16_t type)
69 {
70 if (type > OVS_ACTION_ATTR_MAX) {
71 return -1;
72 }
73
74 switch ((enum ovs_action_attr) type) {
75 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
76 case OVS_ACTION_ATTR_USERSPACE: return -2;
77 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
78 case OVS_ACTION_ATTR_POP_VLAN: return 0;
79 case OVS_ACTION_ATTR_PUSH_MPLS: return sizeof(struct ovs_action_push_mpls);
80 case OVS_ACTION_ATTR_POP_MPLS: return sizeof(ovs_be16);
81 case OVS_ACTION_ATTR_SET: return -2;
82 case OVS_ACTION_ATTR_SAMPLE: return -2;
83
84 case OVS_ACTION_ATTR_UNSPEC:
85 case __OVS_ACTION_ATTR_MAX:
86 return -1;
87 }
88
89 return -1;
90 }
91
92 /* Returns a string form of 'attr'. The return value is either a statically
93 * allocated constant string or the 'bufsize'-byte buffer 'namebuf'. 'bufsize'
94 * should be at least OVS_KEY_ATTR_BUFSIZE. */
95 enum { OVS_KEY_ATTR_BUFSIZE = 3 + INT_STRLEN(unsigned int) + 1 };
96 static const char *
97 ovs_key_attr_to_string(enum ovs_key_attr attr, char *namebuf, size_t bufsize)
98 {
99 switch (attr) {
100 case OVS_KEY_ATTR_UNSPEC: return "unspec";
101 case OVS_KEY_ATTR_ENCAP: return "encap";
102 case OVS_KEY_ATTR_PRIORITY: return "skb_priority";
103 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
104 case OVS_KEY_ATTR_TUNNEL: return "tunnel";
105 case OVS_KEY_ATTR_IN_PORT: return "in_port";
106 case OVS_KEY_ATTR_ETHERNET: return "eth";
107 case OVS_KEY_ATTR_VLAN: return "vlan";
108 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
109 case OVS_KEY_ATTR_IPV4: return "ipv4";
110 case OVS_KEY_ATTR_IPV6: return "ipv6";
111 case OVS_KEY_ATTR_TCP: return "tcp";
112 case OVS_KEY_ATTR_TCP_FLAGS: return "tcp_flags";
113 case OVS_KEY_ATTR_UDP: return "udp";
114 case OVS_KEY_ATTR_SCTP: return "sctp";
115 case OVS_KEY_ATTR_ICMP: return "icmp";
116 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
117 case OVS_KEY_ATTR_ARP: return "arp";
118 case OVS_KEY_ATTR_ND: return "nd";
119 case OVS_KEY_ATTR_MPLS: return "mpls";
120
121 case __OVS_KEY_ATTR_MAX:
122 default:
123 snprintf(namebuf, bufsize, "key%u", (unsigned int) attr);
124 return namebuf;
125 }
126 }
127
128 static void
129 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
130 {
131 size_t len = nl_attr_get_size(a);
132
133 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
134 if (len) {
135 const uint8_t *unspec;
136 unsigned int i;
137
138 unspec = nl_attr_get(a);
139 for (i = 0; i < len; i++) {
140 ds_put_char(ds, i ? ' ': '(');
141 ds_put_format(ds, "%02x", unspec[i]);
142 }
143 ds_put_char(ds, ')');
144 }
145 }
146
147 static void
148 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
149 {
150 static const struct nl_policy ovs_sample_policy[] = {
151 { NL_A_NO_ATTR, 0, 0, false }, /* OVS_SAMPLE_ATTR_UNSPEC */
152 { NL_A_U32, 0, 0, false }, /* OVS_SAMPLE_ATTR_PROBABILITY */
153 { NL_A_NESTED, 0, 0, false }, /* OVS_SAMPLE_ATTR_ACTIONS */
154 };
155 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
156 double percentage;
157 const struct nlattr *nla_acts;
158 int len;
159
160 ds_put_cstr(ds, "sample");
161
162 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
163 ds_put_cstr(ds, "(error)");
164 return;
165 }
166
167 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
168 UINT32_MAX;
169
170 ds_put_format(ds, "(sample=%.1f%%,", percentage);
171
172 ds_put_cstr(ds, "actions(");
173 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
174 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
175 format_odp_actions(ds, nla_acts, len);
176 ds_put_format(ds, "))");
177 }
178
179 static const char *
180 slow_path_reason_to_string(uint32_t reason)
181 {
182 switch ((enum slow_path_reason) reason) {
183 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return STRING;
184 SLOW_PATH_REASONS
185 #undef SPR
186 }
187
188 return NULL;
189 }
190
191 const char *
192 slow_path_reason_to_explanation(enum slow_path_reason reason)
193 {
194 switch (reason) {
195 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return EXPLANATION;
196 SLOW_PATH_REASONS
197 #undef SPR
198 }
199
200 return "<unknown>";
201 }
202
203 static int
204 parse_flags(const char *s, const char *(*bit_to_string)(uint32_t),
205 uint32_t *res)
206 {
207 uint32_t result = 0;
208 int n = 0;
209
210 if (s[n] != '(') {
211 return -EINVAL;
212 }
213 n++;
214
215 while (s[n] != ')') {
216 unsigned long long int flags;
217 uint32_t bit;
218 int n0;
219
220 if (sscanf(&s[n], "%lli%n", &flags, &n0) > 0 && n0 > 0) {
221 n += n0 + (s[n + n0] == ',');
222 result |= flags;
223 continue;
224 }
225
226 for (bit = 1; bit; bit <<= 1) {
227 const char *name = bit_to_string(bit);
228 size_t len;
229
230 if (!name) {
231 continue;
232 }
233
234 len = strlen(name);
235 if (!strncmp(s + n, name, len) &&
236 (s[n + len] == ',' || s[n + len] == ')')) {
237 result |= bit;
238 n += len + (s[n + len] == ',');
239 break;
240 }
241 }
242
243 if (!bit) {
244 return -EINVAL;
245 }
246 }
247 n++;
248
249 *res = result;
250 return n;
251 }
252
253 static void
254 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
255 {
256 static const struct nl_policy ovs_userspace_policy[] = {
257 { NL_A_NO_ATTR, 0, 0, false }, /* OVS_USERSPACE_ATTR_UNSPEC */
258 { NL_A_U32, 0, 0, false }, /* OVS_USERSPACE_ATTR_PID */
259 { NL_A_UNSPEC, 0, 0, true }, /* OVS_USERSPACE_ATTR_USERDATA */
260 };
261 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
262 const struct nlattr *userdata_attr;
263
264 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
265 ds_put_cstr(ds, "userspace(error)");
266 return;
267 }
268
269 ds_put_format(ds, "userspace(pid=%"PRIu32,
270 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
271
272 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
273
274 if (userdata_attr) {
275 const uint8_t *userdata = nl_attr_get(userdata_attr);
276 size_t userdata_len = nl_attr_get_size(userdata_attr);
277 bool userdata_unspec = true;
278 union user_action_cookie cookie;
279
280 if (userdata_len >= sizeof cookie.type
281 && userdata_len <= sizeof cookie) {
282
283 memset(&cookie, 0, sizeof cookie);
284 memcpy(&cookie, userdata, userdata_len);
285
286 userdata_unspec = false;
287
288 if (userdata_len == sizeof cookie.sflow
289 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
290 ds_put_format(ds, ",sFlow("
291 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
292 vlan_tci_to_vid(cookie.sflow.vlan_tci),
293 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
294 cookie.sflow.output);
295 } else if (userdata_len == sizeof cookie.slow_path
296 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
297 ds_put_cstr(ds, ",slow_path(");
298 format_flags(ds, slow_path_reason_to_string,
299 cookie.slow_path.reason, ',');
300 ds_put_format(ds, ")");
301 } else if (userdata_len == sizeof cookie.flow_sample
302 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
303 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
304 ",collector_set_id=%"PRIu32
305 ",obs_domain_id=%"PRIu32
306 ",obs_point_id=%"PRIu32")",
307 cookie.flow_sample.probability,
308 cookie.flow_sample.collector_set_id,
309 cookie.flow_sample.obs_domain_id,
310 cookie.flow_sample.obs_point_id);
311 } else if (userdata_len >= sizeof cookie.ipfix
312 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
313 ds_put_format(ds, ",ipfix");
314 } else {
315 userdata_unspec = true;
316 }
317 }
318
319 if (userdata_unspec) {
320 size_t i;
321 ds_put_format(ds, ",userdata(");
322 for (i = 0; i < userdata_len; i++) {
323 ds_put_format(ds, "%02x", userdata[i]);
324 }
325 ds_put_char(ds, ')');
326 }
327 }
328
329 ds_put_char(ds, ')');
330 }
331
332 static void
333 format_vlan_tci(struct ds *ds, ovs_be16 vlan_tci)
334 {
335 ds_put_format(ds, "vid=%"PRIu16",pcp=%d",
336 vlan_tci_to_vid(vlan_tci),
337 vlan_tci_to_pcp(vlan_tci));
338 if (!(vlan_tci & htons(VLAN_CFI))) {
339 ds_put_cstr(ds, ",cfi=0");
340 }
341 }
342
343 static void
344 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
345 {
346 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
347 mpls_lse_to_label(mpls_lse),
348 mpls_lse_to_tc(mpls_lse),
349 mpls_lse_to_ttl(mpls_lse),
350 mpls_lse_to_bos(mpls_lse));
351 }
352
353 static void
354 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
355 const struct ovs_key_mpls *mpls_mask)
356 {
357 ovs_be32 key = mpls_key->mpls_lse;
358
359 if (mpls_mask == NULL) {
360 format_mpls_lse(ds, key);
361 } else {
362 ovs_be32 mask = mpls_mask->mpls_lse;
363
364 ds_put_format(ds, "label=%"PRIu32"/0x%x,tc=%d/%x,ttl=%d/0x%x,bos=%d/%x",
365 mpls_lse_to_label(key), mpls_lse_to_label(mask),
366 mpls_lse_to_tc(key), mpls_lse_to_tc(mask),
367 mpls_lse_to_ttl(key), mpls_lse_to_ttl(mask),
368 mpls_lse_to_bos(key), mpls_lse_to_bos(mask));
369 }
370 }
371
372 static void
373 format_odp_action(struct ds *ds, const struct nlattr *a)
374 {
375 int expected_len;
376 enum ovs_action_attr type = nl_attr_type(a);
377 const struct ovs_action_push_vlan *vlan;
378
379 expected_len = odp_action_len(nl_attr_type(a));
380 if (expected_len != -2 && nl_attr_get_size(a) != expected_len) {
381 ds_put_format(ds, "bad length %zu, expected %d for: ",
382 nl_attr_get_size(a), expected_len);
383 format_generic_odp_action(ds, a);
384 return;
385 }
386
387 switch (type) {
388 case OVS_ACTION_ATTR_OUTPUT:
389 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
390 break;
391 case OVS_ACTION_ATTR_USERSPACE:
392 format_odp_userspace_action(ds, a);
393 break;
394 case OVS_ACTION_ATTR_SET:
395 ds_put_cstr(ds, "set(");
396 format_odp_key_attr(nl_attr_get(a), NULL, NULL, ds, true);
397 ds_put_cstr(ds, ")");
398 break;
399 case OVS_ACTION_ATTR_PUSH_VLAN:
400 vlan = nl_attr_get(a);
401 ds_put_cstr(ds, "push_vlan(");
402 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
403 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
404 }
405 format_vlan_tci(ds, vlan->vlan_tci);
406 ds_put_char(ds, ')');
407 break;
408 case OVS_ACTION_ATTR_POP_VLAN:
409 ds_put_cstr(ds, "pop_vlan");
410 break;
411 case OVS_ACTION_ATTR_PUSH_MPLS: {
412 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
413 ds_put_cstr(ds, "push_mpls(");
414 format_mpls_lse(ds, mpls->mpls_lse);
415 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
416 break;
417 }
418 case OVS_ACTION_ATTR_POP_MPLS: {
419 ovs_be16 ethertype = nl_attr_get_be16(a);
420 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
421 break;
422 }
423 case OVS_ACTION_ATTR_SAMPLE:
424 format_odp_sample_action(ds, a);
425 break;
426 case OVS_ACTION_ATTR_UNSPEC:
427 case __OVS_ACTION_ATTR_MAX:
428 default:
429 format_generic_odp_action(ds, a);
430 break;
431 }
432 }
433
434 void
435 format_odp_actions(struct ds *ds, const struct nlattr *actions,
436 size_t actions_len)
437 {
438 if (actions_len) {
439 const struct nlattr *a;
440 unsigned int left;
441
442 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
443 if (a != actions) {
444 ds_put_char(ds, ',');
445 }
446 format_odp_action(ds, a);
447 }
448 if (left) {
449 int i;
450
451 if (left == actions_len) {
452 ds_put_cstr(ds, "<empty>");
453 }
454 ds_put_format(ds, ",***%u leftover bytes*** (", left);
455 for (i = 0; i < left; i++) {
456 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
457 }
458 ds_put_char(ds, ')');
459 }
460 } else {
461 ds_put_cstr(ds, "drop");
462 }
463 }
464
465 static int
466 parse_odp_action(const char *s, const struct simap *port_names,
467 struct ofpbuf *actions)
468 {
469 /* Many of the sscanf calls in this function use oversized destination
470 * fields because some sscanf() implementations truncate the range of %i
471 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
472 * value of 0x7fff. The other alternatives are to allow only a single
473 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
474 * parsers.
475 *
476 * The tun_id parser has to use an alternative approach because there is no
477 * type larger than 64 bits. */
478
479 {
480 unsigned long long int port;
481 int n = -1;
482
483 if (sscanf(s, "%lli%n", &port, &n) > 0 && n > 0) {
484 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
485 return n;
486 }
487 }
488
489 if (port_names) {
490 int len = strcspn(s, delimiters);
491 struct simap_node *node;
492
493 node = simap_find_len(port_names, s, len);
494 if (node) {
495 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
496 return len;
497 }
498 }
499
500 {
501 unsigned long long int pid;
502 unsigned long long int output;
503 unsigned long long int probability;
504 unsigned long long int collector_set_id;
505 unsigned long long int obs_domain_id;
506 unsigned long long int obs_point_id;
507 int vid, pcp;
508 int n = -1;
509
510 if (sscanf(s, "userspace(pid=%lli)%n", &pid, &n) > 0 && n > 0) {
511 odp_put_userspace_action(pid, NULL, 0, actions);
512 return n;
513 } else if (sscanf(s, "userspace(pid=%lli,sFlow(vid=%i,"
514 "pcp=%i,output=%lli))%n",
515 &pid, &vid, &pcp, &output, &n) > 0 && n > 0) {
516 union user_action_cookie cookie;
517 uint16_t tci;
518
519 tci = vid | (pcp << VLAN_PCP_SHIFT);
520 if (tci) {
521 tci |= VLAN_CFI;
522 }
523
524 cookie.type = USER_ACTION_COOKIE_SFLOW;
525 cookie.sflow.vlan_tci = htons(tci);
526 cookie.sflow.output = output;
527 odp_put_userspace_action(pid, &cookie, sizeof cookie.sflow,
528 actions);
529 return n;
530 } else if (sscanf(s, "userspace(pid=%lli,slow_path%n", &pid, &n) > 0
531 && n > 0) {
532 union user_action_cookie cookie;
533 int res;
534
535 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
536 cookie.slow_path.unused = 0;
537 cookie.slow_path.reason = 0;
538
539 res = parse_flags(&s[n], slow_path_reason_to_string,
540 &cookie.slow_path.reason);
541 if (res < 0) {
542 return res;
543 }
544 n += res;
545 if (s[n] != ')') {
546 return -EINVAL;
547 }
548 n++;
549
550 odp_put_userspace_action(pid, &cookie, sizeof cookie.slow_path,
551 actions);
552 return n;
553 } else if (sscanf(s, "userspace(pid=%lli,flow_sample(probability=%lli,"
554 "collector_set_id=%lli,obs_domain_id=%lli,"
555 "obs_point_id=%lli))%n",
556 &pid, &probability, &collector_set_id,
557 &obs_domain_id, &obs_point_id, &n) > 0 && n > 0) {
558 union user_action_cookie cookie;
559
560 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
561 cookie.flow_sample.probability = probability;
562 cookie.flow_sample.collector_set_id = collector_set_id;
563 cookie.flow_sample.obs_domain_id = obs_domain_id;
564 cookie.flow_sample.obs_point_id = obs_point_id;
565 odp_put_userspace_action(pid, &cookie, sizeof cookie.flow_sample,
566 actions);
567 return n;
568 } else if (sscanf(s, "userspace(pid=%lli,ipfix)%n", &pid, &n) > 0
569 && n > 0) {
570 union user_action_cookie cookie;
571
572 cookie.type = USER_ACTION_COOKIE_IPFIX;
573 odp_put_userspace_action(pid, &cookie, sizeof cookie.ipfix,
574 actions);
575 return n;
576 } else if (sscanf(s, "userspace(pid=%lli,userdata(%n", &pid, &n) > 0
577 && n > 0) {
578 struct ofpbuf buf;
579 char *end;
580
581 ofpbuf_init(&buf, 16);
582 end = ofpbuf_put_hex(&buf, &s[n], NULL);
583 if (end[0] == ')' && end[1] == ')') {
584 odp_put_userspace_action(pid, buf.data, buf.size, actions);
585 ofpbuf_uninit(&buf);
586 return (end + 2) - s;
587 }
588 }
589 }
590
591 if (!strncmp(s, "set(", 4)) {
592 size_t start_ofs;
593 int retval;
594
595 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
596 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, NULL);
597 if (retval < 0) {
598 return retval;
599 }
600 if (s[retval + 4] != ')') {
601 return -EINVAL;
602 }
603 nl_msg_end_nested(actions, start_ofs);
604 return retval + 5;
605 }
606
607 {
608 struct ovs_action_push_vlan push;
609 int tpid = ETH_TYPE_VLAN;
610 int vid, pcp;
611 int cfi = 1;
612 int n = -1;
613
614 if ((sscanf(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n) > 0
615 && n > 0)
616 || (sscanf(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
617 &vid, &pcp, &cfi, &n) > 0 && n > 0)
618 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
619 &tpid, &vid, &pcp, &n) > 0 && n > 0)
620 || (sscanf(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
621 &tpid, &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
622 push.vlan_tpid = htons(tpid);
623 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
624 | (pcp << VLAN_PCP_SHIFT)
625 | (cfi ? VLAN_CFI : 0));
626 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
627 &push, sizeof push);
628
629 return n;
630 }
631 }
632
633 if (!strncmp(s, "pop_vlan", 8)) {
634 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
635 return 8;
636 }
637
638 {
639 double percentage;
640 int n = -1;
641
642 if (sscanf(s, "sample(sample=%lf%%,actions(%n", &percentage, &n) > 0
643 && percentage >= 0. && percentage <= 100.0
644 && n > 0) {
645 size_t sample_ofs, actions_ofs;
646 double probability;
647
648 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
649 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
650 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
651 (probability <= 0 ? 0
652 : probability >= UINT32_MAX ? UINT32_MAX
653 : probability));
654
655 actions_ofs = nl_msg_start_nested(actions,
656 OVS_SAMPLE_ATTR_ACTIONS);
657 for (;;) {
658 int retval;
659
660 n += strspn(s + n, delimiters);
661 if (s[n] == ')') {
662 break;
663 }
664
665 retval = parse_odp_action(s + n, port_names, actions);
666 if (retval < 0) {
667 return retval;
668 }
669 n += retval;
670 }
671 nl_msg_end_nested(actions, actions_ofs);
672 nl_msg_end_nested(actions, sample_ofs);
673
674 return s[n + 1] == ')' ? n + 2 : -EINVAL;
675 }
676 }
677
678 return -EINVAL;
679 }
680
681 /* Parses the string representation of datapath actions, in the format output
682 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
683 * value. On success, the ODP actions are appended to 'actions' as a series of
684 * Netlink attributes. On failure, no data is appended to 'actions'. Either
685 * way, 'actions''s data might be reallocated. */
686 int
687 odp_actions_from_string(const char *s, const struct simap *port_names,
688 struct ofpbuf *actions)
689 {
690 size_t old_size;
691
692 if (!strcasecmp(s, "drop")) {
693 return 0;
694 }
695
696 old_size = actions->size;
697 for (;;) {
698 int retval;
699
700 s += strspn(s, delimiters);
701 if (!*s) {
702 return 0;
703 }
704
705 retval = parse_odp_action(s, port_names, actions);
706 if (retval < 0 || !strchr(delimiters, s[retval])) {
707 actions->size = old_size;
708 return -retval;
709 }
710 s += retval;
711 }
712
713 return 0;
714 }
715 \f
716 /* Returns the correct length of the payload for a flow key attribute of the
717 * specified 'type', -1 if 'type' is unknown, or -2 if the attribute's payload
718 * is variable length. */
719 static int
720 odp_flow_key_attr_len(uint16_t type)
721 {
722 if (type > OVS_KEY_ATTR_MAX) {
723 return -1;
724 }
725
726 switch ((enum ovs_key_attr) type) {
727 case OVS_KEY_ATTR_ENCAP: return -2;
728 case OVS_KEY_ATTR_PRIORITY: return 4;
729 case OVS_KEY_ATTR_SKB_MARK: return 4;
730 case OVS_KEY_ATTR_TUNNEL: return -2;
731 case OVS_KEY_ATTR_IN_PORT: return 4;
732 case OVS_KEY_ATTR_ETHERNET: return sizeof(struct ovs_key_ethernet);
733 case OVS_KEY_ATTR_VLAN: return sizeof(ovs_be16);
734 case OVS_KEY_ATTR_ETHERTYPE: return 2;
735 case OVS_KEY_ATTR_MPLS: return sizeof(struct ovs_key_mpls);
736 case OVS_KEY_ATTR_IPV4: return sizeof(struct ovs_key_ipv4);
737 case OVS_KEY_ATTR_IPV6: return sizeof(struct ovs_key_ipv6);
738 case OVS_KEY_ATTR_TCP: return sizeof(struct ovs_key_tcp);
739 case OVS_KEY_ATTR_TCP_FLAGS: return 2;
740 case OVS_KEY_ATTR_UDP: return sizeof(struct ovs_key_udp);
741 case OVS_KEY_ATTR_SCTP: return sizeof(struct ovs_key_sctp);
742 case OVS_KEY_ATTR_ICMP: return sizeof(struct ovs_key_icmp);
743 case OVS_KEY_ATTR_ICMPV6: return sizeof(struct ovs_key_icmpv6);
744 case OVS_KEY_ATTR_ARP: return sizeof(struct ovs_key_arp);
745 case OVS_KEY_ATTR_ND: return sizeof(struct ovs_key_nd);
746
747 case OVS_KEY_ATTR_UNSPEC:
748 case __OVS_KEY_ATTR_MAX:
749 return -1;
750 }
751
752 return -1;
753 }
754
755 static void
756 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
757 {
758 size_t len = nl_attr_get_size(a);
759 if (len) {
760 const uint8_t *unspec;
761 unsigned int i;
762
763 unspec = nl_attr_get(a);
764 for (i = 0; i < len; i++) {
765 if (i) {
766 ds_put_char(ds, ' ');
767 }
768 ds_put_format(ds, "%02x", unspec[i]);
769 }
770 }
771 }
772
773 static const char *
774 ovs_frag_type_to_string(enum ovs_frag_type type)
775 {
776 switch (type) {
777 case OVS_FRAG_TYPE_NONE:
778 return "no";
779 case OVS_FRAG_TYPE_FIRST:
780 return "first";
781 case OVS_FRAG_TYPE_LATER:
782 return "later";
783 case __OVS_FRAG_TYPE_MAX:
784 default:
785 return "<error>";
786 }
787 }
788
789 static int
790 tunnel_key_attr_len(int type)
791 {
792 switch (type) {
793 case OVS_TUNNEL_KEY_ATTR_ID: return 8;
794 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: return 4;
795 case OVS_TUNNEL_KEY_ATTR_IPV4_DST: return 4;
796 case OVS_TUNNEL_KEY_ATTR_TOS: return 1;
797 case OVS_TUNNEL_KEY_ATTR_TTL: return 1;
798 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT: return 0;
799 case OVS_TUNNEL_KEY_ATTR_CSUM: return 0;
800 case __OVS_TUNNEL_KEY_ATTR_MAX:
801 return -1;
802 }
803 return -1;
804 }
805
806 enum odp_key_fitness
807 odp_tun_key_from_attr(const struct nlattr *attr, struct flow_tnl *tun)
808 {
809 unsigned int left;
810 const struct nlattr *a;
811 bool ttl = false;
812 bool unknown = false;
813
814 NL_NESTED_FOR_EACH(a, left, attr) {
815 uint16_t type = nl_attr_type(a);
816 size_t len = nl_attr_get_size(a);
817 int expected_len = tunnel_key_attr_len(type);
818
819 if (len != expected_len && expected_len >= 0) {
820 return ODP_FIT_ERROR;
821 }
822
823 switch (type) {
824 case OVS_TUNNEL_KEY_ATTR_ID:
825 tun->tun_id = nl_attr_get_be64(a);
826 tun->flags |= FLOW_TNL_F_KEY;
827 break;
828 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
829 tun->ip_src = nl_attr_get_be32(a);
830 break;
831 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
832 tun->ip_dst = nl_attr_get_be32(a);
833 break;
834 case OVS_TUNNEL_KEY_ATTR_TOS:
835 tun->ip_tos = nl_attr_get_u8(a);
836 break;
837 case OVS_TUNNEL_KEY_ATTR_TTL:
838 tun->ip_ttl = nl_attr_get_u8(a);
839 ttl = true;
840 break;
841 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
842 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
843 break;
844 case OVS_TUNNEL_KEY_ATTR_CSUM:
845 tun->flags |= FLOW_TNL_F_CSUM;
846 break;
847 default:
848 /* Allow this to show up as unexpected, if there are unknown
849 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
850 unknown = true;
851 break;
852 }
853 }
854
855 if (!ttl) {
856 return ODP_FIT_ERROR;
857 }
858 if (unknown) {
859 return ODP_FIT_TOO_MUCH;
860 }
861 return ODP_FIT_PERFECT;
862 }
863
864 static void
865 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key)
866 {
867 size_t tun_key_ofs;
868
869 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
870
871 if (tun_key->flags & FLOW_TNL_F_KEY) {
872 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
873 }
874 if (tun_key->ip_src) {
875 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
876 }
877 if (tun_key->ip_dst) {
878 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
879 }
880 if (tun_key->ip_tos) {
881 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
882 }
883 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
884 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
885 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
886 }
887 if (tun_key->flags & FLOW_TNL_F_CSUM) {
888 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
889 }
890
891 nl_msg_end_nested(a, tun_key_ofs);
892 }
893
894 static bool
895 odp_mask_attr_is_wildcard(const struct nlattr *ma)
896 {
897 return is_all_zeros(nl_attr_get(ma), nl_attr_get_size(ma));
898 }
899
900 static bool
901 odp_mask_attr_is_exact(const struct nlattr *ma)
902 {
903 bool is_exact = false;
904 enum ovs_key_attr attr = nl_attr_type(ma);
905
906 if (attr == OVS_KEY_ATTR_TUNNEL) {
907 /* XXX this is a hack for now. Should change
908 * the exact match dection to per field
909 * instead of per attribute.
910 */
911 struct flow_tnl tun_mask;
912 memset(&tun_mask, 0, sizeof tun_mask);
913 odp_tun_key_from_attr(ma, &tun_mask);
914 if (tun_mask.flags == (FLOW_TNL_F_KEY
915 | FLOW_TNL_F_DONT_FRAGMENT
916 | FLOW_TNL_F_CSUM)) {
917 /* The flags are exact match, check the remaining fields. */
918 tun_mask.flags = 0xffff;
919 is_exact = is_all_ones((uint8_t *)&tun_mask,
920 offsetof(struct flow_tnl, ip_ttl));
921 }
922 } else {
923 is_exact = is_all_ones(nl_attr_get(ma), nl_attr_get_size(ma));
924 }
925
926 return is_exact;
927 }
928
929 void
930 odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no,
931 char *port_name)
932 {
933 struct odp_portno_names *odp_portno_names;
934
935 odp_portno_names = xmalloc(sizeof *odp_portno_names);
936 odp_portno_names->port_no = port_no;
937 odp_portno_names->name = xstrdup(port_name);
938 hmap_insert(portno_names, &odp_portno_names->hmap_node,
939 hash_odp_port(port_no));
940 }
941
942 static char *
943 odp_portno_names_get(const struct hmap *portno_names, odp_port_t port_no)
944 {
945 struct odp_portno_names *odp_portno_names;
946
947 HMAP_FOR_EACH_IN_BUCKET (odp_portno_names, hmap_node,
948 hash_odp_port(port_no), portno_names) {
949 if (odp_portno_names->port_no == port_no) {
950 return odp_portno_names->name;
951 }
952 }
953 return NULL;
954 }
955
956 void
957 odp_portno_names_destroy(struct hmap *portno_names)
958 {
959 struct odp_portno_names *odp_portno_names, *odp_portno_names_next;
960 HMAP_FOR_EACH_SAFE (odp_portno_names, odp_portno_names_next,
961 hmap_node, portno_names) {
962 hmap_remove(portno_names, &odp_portno_names->hmap_node);
963 free(odp_portno_names->name);
964 free(odp_portno_names);
965 }
966 }
967
968 static void
969 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
970 const struct hmap *portno_names, struct ds *ds,
971 bool verbose)
972 {
973 struct flow_tnl tun_key;
974 enum ovs_key_attr attr = nl_attr_type(a);
975 char namebuf[OVS_KEY_ATTR_BUFSIZE];
976 int expected_len;
977 bool is_exact;
978
979 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
980
981 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
982
983 {
984 expected_len = odp_flow_key_attr_len(nl_attr_type(a));
985 if (expected_len != -2) {
986 bool bad_key_len = nl_attr_get_size(a) != expected_len;
987 bool bad_mask_len = ma && nl_attr_get_size(a) != expected_len;
988
989 if (bad_key_len || bad_mask_len) {
990 if (bad_key_len) {
991 ds_put_format(ds, "(bad key length %zu, expected %d)(",
992 nl_attr_get_size(a),
993 odp_flow_key_attr_len(nl_attr_type(a)));
994 }
995 format_generic_odp_key(a, ds);
996 if (bad_mask_len) {
997 ds_put_char(ds, '/');
998 ds_put_format(ds, "(bad mask length %zu, expected %d)(",
999 nl_attr_get_size(ma),
1000 odp_flow_key_attr_len(nl_attr_type(ma)));
1001 }
1002 format_generic_odp_key(ma, ds);
1003 ds_put_char(ds, ')');
1004 return;
1005 }
1006 }
1007 }
1008
1009 ds_put_char(ds, '(');
1010 switch (attr) {
1011 case OVS_KEY_ATTR_ENCAP:
1012 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
1013 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
1014 nl_attr_get(ma), nl_attr_get_size(ma), NULL, ds,
1015 verbose);
1016 } else if (nl_attr_get_size(a)) {
1017 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, NULL,
1018 ds, verbose);
1019 }
1020 break;
1021
1022 case OVS_KEY_ATTR_PRIORITY:
1023 case OVS_KEY_ATTR_SKB_MARK:
1024 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
1025 if (!is_exact) {
1026 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1027 }
1028 break;
1029
1030 case OVS_KEY_ATTR_TUNNEL:
1031 memset(&tun_key, 0, sizeof tun_key);
1032 if (odp_tun_key_from_attr(a, &tun_key) == ODP_FIT_ERROR) {
1033 ds_put_format(ds, "error");
1034 } else if (!is_exact) {
1035 struct flow_tnl tun_mask;
1036
1037 memset(&tun_mask, 0, sizeof tun_mask);
1038 odp_tun_key_from_attr(ma, &tun_mask);
1039 ds_put_format(ds, "tun_id=%#"PRIx64"/%#"PRIx64
1040 ",src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1041 ",tos=%#"PRIx8"/%#"PRIx8",ttl=%"PRIu8"/%#"PRIx8
1042 ",flags(",
1043 ntohll(tun_key.tun_id), ntohll(tun_mask.tun_id),
1044 IP_ARGS(tun_key.ip_src), IP_ARGS(tun_mask.ip_src),
1045 IP_ARGS(tun_key.ip_dst), IP_ARGS(tun_mask.ip_dst),
1046 tun_key.ip_tos, tun_mask.ip_tos,
1047 tun_key.ip_ttl, tun_mask.ip_ttl);
1048
1049 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1050
1051 /* XXX This code is correct, but enabling it would break the unit
1052 test. Disable it for now until the input parser is fixed.
1053
1054 ds_put_char(ds, '/');
1055 format_flags(ds, flow_tun_flag_to_string, tun_mask.flags, ',');
1056 */
1057 ds_put_char(ds, ')');
1058 } else {
1059 ds_put_format(ds, "tun_id=0x%"PRIx64",src="IP_FMT",dst="IP_FMT","
1060 "tos=0x%"PRIx8",ttl=%"PRIu8",flags(",
1061 ntohll(tun_key.tun_id),
1062 IP_ARGS(tun_key.ip_src),
1063 IP_ARGS(tun_key.ip_dst),
1064 tun_key.ip_tos, tun_key.ip_ttl);
1065
1066 format_flags(ds, flow_tun_flag_to_string, tun_key.flags, ',');
1067 ds_put_char(ds, ')');
1068 }
1069 break;
1070
1071 case OVS_KEY_ATTR_IN_PORT:
1072 if (portno_names && verbose && is_exact) {
1073 char *name = odp_portno_names_get(portno_names,
1074 u32_to_odp(nl_attr_get_u32(a)));
1075 if (name) {
1076 ds_put_format(ds, "%s", name);
1077 } else {
1078 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1079 }
1080 } else {
1081 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
1082 if (!is_exact) {
1083 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
1084 }
1085 }
1086 break;
1087
1088 case OVS_KEY_ATTR_ETHERNET:
1089 if (!is_exact) {
1090 const struct ovs_key_ethernet *eth_mask = nl_attr_get(ma);
1091 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1092
1093 ds_put_format(ds, "src="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1094 ",dst="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1095 ETH_ADDR_ARGS(eth_key->eth_src),
1096 ETH_ADDR_ARGS(eth_mask->eth_src),
1097 ETH_ADDR_ARGS(eth_key->eth_dst),
1098 ETH_ADDR_ARGS(eth_mask->eth_dst));
1099 } else {
1100 const struct ovs_key_ethernet *eth_key = nl_attr_get(a);
1101
1102 ds_put_format(ds, "src="ETH_ADDR_FMT",dst="ETH_ADDR_FMT,
1103 ETH_ADDR_ARGS(eth_key->eth_src),
1104 ETH_ADDR_ARGS(eth_key->eth_dst));
1105 }
1106 break;
1107
1108 case OVS_KEY_ATTR_VLAN:
1109 {
1110 ovs_be16 vlan_tci = nl_attr_get_be16(a);
1111 if (!is_exact) {
1112 ovs_be16 mask = nl_attr_get_be16(ma);
1113 ds_put_format(ds, "vid=%"PRIu16"/0x%"PRIx16",pcp=%d/0x%x,cfi=%d/%d",
1114 vlan_tci_to_vid(vlan_tci),
1115 vlan_tci_to_vid(mask),
1116 vlan_tci_to_pcp(vlan_tci),
1117 vlan_tci_to_pcp(mask),
1118 vlan_tci_to_cfi(vlan_tci),
1119 vlan_tci_to_cfi(mask));
1120 } else {
1121 format_vlan_tci(ds, vlan_tci);
1122 }
1123 }
1124 break;
1125
1126 case OVS_KEY_ATTR_MPLS: {
1127 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
1128 const struct ovs_key_mpls *mpls_mask = NULL;
1129 if (!is_exact) {
1130 mpls_mask = nl_attr_get(ma);
1131 }
1132 format_mpls(ds, mpls_key, mpls_mask);
1133 break;
1134 }
1135
1136 case OVS_KEY_ATTR_ETHERTYPE:
1137 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
1138 if (!is_exact) {
1139 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
1140 }
1141 break;
1142
1143 case OVS_KEY_ATTR_IPV4:
1144 if (!is_exact) {
1145 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1146 const struct ovs_key_ipv4 *ipv4_mask = nl_attr_get(ma);
1147
1148 ds_put_format(ds, "src="IP_FMT"/"IP_FMT",dst="IP_FMT"/"IP_FMT
1149 ",proto=%"PRIu8"/%#"PRIx8",tos=%#"PRIx8"/%#"PRIx8
1150 ",ttl=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1151 IP_ARGS(ipv4_key->ipv4_src),
1152 IP_ARGS(ipv4_mask->ipv4_src),
1153 IP_ARGS(ipv4_key->ipv4_dst),
1154 IP_ARGS(ipv4_mask->ipv4_dst),
1155 ipv4_key->ipv4_proto, ipv4_mask->ipv4_proto,
1156 ipv4_key->ipv4_tos, ipv4_mask->ipv4_tos,
1157 ipv4_key->ipv4_ttl, ipv4_mask->ipv4_ttl,
1158 ovs_frag_type_to_string(ipv4_key->ipv4_frag),
1159 ipv4_mask->ipv4_frag);
1160 } else {
1161 const struct ovs_key_ipv4 *ipv4_key = nl_attr_get(a);
1162
1163 ds_put_format(ds, "src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
1164 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=%s",
1165 IP_ARGS(ipv4_key->ipv4_src),
1166 IP_ARGS(ipv4_key->ipv4_dst),
1167 ipv4_key->ipv4_proto, ipv4_key->ipv4_tos,
1168 ipv4_key->ipv4_ttl,
1169 ovs_frag_type_to_string(ipv4_key->ipv4_frag));
1170 }
1171 break;
1172
1173 case OVS_KEY_ATTR_IPV6:
1174 if (!is_exact) {
1175 const struct ovs_key_ipv6 *ipv6_key, *ipv6_mask;
1176 char src_str[INET6_ADDRSTRLEN];
1177 char dst_str[INET6_ADDRSTRLEN];
1178 char src_mask[INET6_ADDRSTRLEN];
1179 char dst_mask[INET6_ADDRSTRLEN];
1180
1181 ipv6_key = nl_attr_get(a);
1182 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1183 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1184
1185 ipv6_mask = nl_attr_get(ma);
1186 inet_ntop(AF_INET6, ipv6_mask->ipv6_src, src_mask, sizeof src_mask);
1187 inet_ntop(AF_INET6, ipv6_mask->ipv6_dst, dst_mask, sizeof dst_mask);
1188
1189 ds_put_format(ds, "src=%s/%s,dst=%s/%s,label=%#"PRIx32"/%#"PRIx32
1190 ",proto=%"PRIu8"/%#"PRIx8",tclass=%#"PRIx8"/%#"PRIx8
1191 ",hlimit=%"PRIu8"/%#"PRIx8",frag=%s/%#"PRIx8,
1192 src_str, src_mask, dst_str, dst_mask,
1193 ntohl(ipv6_key->ipv6_label),
1194 ntohl(ipv6_mask->ipv6_label),
1195 ipv6_key->ipv6_proto, ipv6_mask->ipv6_proto,
1196 ipv6_key->ipv6_tclass, ipv6_mask->ipv6_tclass,
1197 ipv6_key->ipv6_hlimit, ipv6_mask->ipv6_hlimit,
1198 ovs_frag_type_to_string(ipv6_key->ipv6_frag),
1199 ipv6_mask->ipv6_frag);
1200 } else {
1201 const struct ovs_key_ipv6 *ipv6_key;
1202 char src_str[INET6_ADDRSTRLEN];
1203 char dst_str[INET6_ADDRSTRLEN];
1204
1205 ipv6_key = nl_attr_get(a);
1206 inet_ntop(AF_INET6, ipv6_key->ipv6_src, src_str, sizeof src_str);
1207 inet_ntop(AF_INET6, ipv6_key->ipv6_dst, dst_str, sizeof dst_str);
1208
1209 ds_put_format(ds, "src=%s,dst=%s,label=%#"PRIx32",proto=%"PRIu8
1210 ",tclass=%#"PRIx8",hlimit=%"PRIu8",frag=%s",
1211 src_str, dst_str, ntohl(ipv6_key->ipv6_label),
1212 ipv6_key->ipv6_proto, ipv6_key->ipv6_tclass,
1213 ipv6_key->ipv6_hlimit,
1214 ovs_frag_type_to_string(ipv6_key->ipv6_frag));
1215 }
1216 break;
1217
1218 case OVS_KEY_ATTR_TCP:
1219 if (!is_exact) {
1220 const struct ovs_key_tcp *tcp_mask = nl_attr_get(ma);
1221 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1222
1223 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1224 ",dst=%"PRIu16"/%#"PRIx16,
1225 ntohs(tcp_key->tcp_src), ntohs(tcp_mask->tcp_src),
1226 ntohs(tcp_key->tcp_dst), ntohs(tcp_mask->tcp_dst));
1227 } else {
1228 const struct ovs_key_tcp *tcp_key = nl_attr_get(a);
1229
1230 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1231 ntohs(tcp_key->tcp_src), ntohs(tcp_key->tcp_dst));
1232 }
1233 break;
1234
1235 case OVS_KEY_ATTR_TCP_FLAGS:
1236 ds_put_format(ds, "0x%03"PRIx16, ntohs(nl_attr_get_be16(a)));
1237 if (!is_exact) {
1238 ds_put_format(ds, "/0x%03"PRIx16, ntohs(nl_attr_get_be16(ma)));
1239 }
1240 break;
1241
1242 case OVS_KEY_ATTR_UDP:
1243 if (!is_exact) {
1244 const struct ovs_key_udp *udp_mask = nl_attr_get(ma);
1245 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1246
1247 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1248 ",dst=%"PRIu16"/%#"PRIx16,
1249 ntohs(udp_key->udp_src), ntohs(udp_mask->udp_src),
1250 ntohs(udp_key->udp_dst), ntohs(udp_mask->udp_dst));
1251 } else {
1252 const struct ovs_key_udp *udp_key = nl_attr_get(a);
1253
1254 ds_put_format(ds, "src=%"PRIu16",dst=%"PRIu16,
1255 ntohs(udp_key->udp_src), ntohs(udp_key->udp_dst));
1256 }
1257 break;
1258
1259 case OVS_KEY_ATTR_SCTP:
1260 if (ma) {
1261 const struct ovs_key_sctp *sctp_mask = nl_attr_get(ma);
1262 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1263
1264 ds_put_format(ds, "src=%"PRIu16"/%#"PRIx16
1265 ",dst=%"PRIu16"/%#"PRIx16,
1266 ntohs(sctp_key->sctp_src), ntohs(sctp_mask->sctp_src),
1267 ntohs(sctp_key->sctp_dst), ntohs(sctp_mask->sctp_dst));
1268 } else {
1269 const struct ovs_key_sctp *sctp_key = nl_attr_get(a);
1270
1271 ds_put_format(ds, "(src=%"PRIu16",dst=%"PRIu16")",
1272 ntohs(sctp_key->sctp_src), ntohs(sctp_key->sctp_dst));
1273 }
1274 break;
1275
1276 case OVS_KEY_ATTR_ICMP:
1277 if (!is_exact) {
1278 const struct ovs_key_icmp *icmp_mask = nl_attr_get(ma);
1279 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1280
1281 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1282 icmp_key->icmp_type, icmp_mask->icmp_type,
1283 icmp_key->icmp_code, icmp_mask->icmp_code);
1284 } else {
1285 const struct ovs_key_icmp *icmp_key = nl_attr_get(a);
1286
1287 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1288 icmp_key->icmp_type, icmp_key->icmp_code);
1289 }
1290 break;
1291
1292 case OVS_KEY_ATTR_ICMPV6:
1293 if (!is_exact) {
1294 const struct ovs_key_icmpv6 *icmpv6_mask = nl_attr_get(ma);
1295 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1296
1297 ds_put_format(ds, "type=%"PRIu8"/%#"PRIx8",code=%"PRIu8"/%#"PRIx8,
1298 icmpv6_key->icmpv6_type, icmpv6_mask->icmpv6_type,
1299 icmpv6_key->icmpv6_code, icmpv6_mask->icmpv6_code);
1300 } else {
1301 const struct ovs_key_icmpv6 *icmpv6_key = nl_attr_get(a);
1302
1303 ds_put_format(ds, "type=%"PRIu8",code=%"PRIu8,
1304 icmpv6_key->icmpv6_type, icmpv6_key->icmpv6_code);
1305 }
1306 break;
1307
1308 case OVS_KEY_ATTR_ARP:
1309 if (!is_exact) {
1310 const struct ovs_key_arp *arp_mask = nl_attr_get(ma);
1311 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1312
1313 ds_put_format(ds, "sip="IP_FMT"/"IP_FMT",tip="IP_FMT"/"IP_FMT
1314 ",op=%"PRIu16"/%#"PRIx16
1315 ",sha="ETH_ADDR_FMT"/"ETH_ADDR_FMT
1316 ",tha="ETH_ADDR_FMT"/"ETH_ADDR_FMT,
1317 IP_ARGS(arp_key->arp_sip),
1318 IP_ARGS(arp_mask->arp_sip),
1319 IP_ARGS(arp_key->arp_tip),
1320 IP_ARGS(arp_mask->arp_tip),
1321 ntohs(arp_key->arp_op), ntohs(arp_mask->arp_op),
1322 ETH_ADDR_ARGS(arp_key->arp_sha),
1323 ETH_ADDR_ARGS(arp_mask->arp_sha),
1324 ETH_ADDR_ARGS(arp_key->arp_tha),
1325 ETH_ADDR_ARGS(arp_mask->arp_tha));
1326 } else {
1327 const struct ovs_key_arp *arp_key = nl_attr_get(a);
1328
1329 ds_put_format(ds, "sip="IP_FMT",tip="IP_FMT",op=%"PRIu16","
1330 "sha="ETH_ADDR_FMT",tha="ETH_ADDR_FMT,
1331 IP_ARGS(arp_key->arp_sip), IP_ARGS(arp_key->arp_tip),
1332 ntohs(arp_key->arp_op),
1333 ETH_ADDR_ARGS(arp_key->arp_sha),
1334 ETH_ADDR_ARGS(arp_key->arp_tha));
1335 }
1336 break;
1337
1338 case OVS_KEY_ATTR_ND: {
1339 const struct ovs_key_nd *nd_key, *nd_mask = NULL;
1340 char target[INET6_ADDRSTRLEN];
1341
1342 nd_key = nl_attr_get(a);
1343 if (!is_exact) {
1344 nd_mask = nl_attr_get(ma);
1345 }
1346
1347 inet_ntop(AF_INET6, nd_key->nd_target, target, sizeof target);
1348 ds_put_format(ds, "target=%s", target);
1349 if (!is_exact) {
1350 inet_ntop(AF_INET6, nd_mask->nd_target, target, sizeof target);
1351 ds_put_format(ds, "/%s", target);
1352 }
1353
1354 if (!eth_addr_is_zero(nd_key->nd_sll)) {
1355 ds_put_format(ds, ",sll="ETH_ADDR_FMT,
1356 ETH_ADDR_ARGS(nd_key->nd_sll));
1357 if (!is_exact) {
1358 ds_put_format(ds, "/"ETH_ADDR_FMT,
1359 ETH_ADDR_ARGS(nd_mask->nd_sll));
1360 }
1361 }
1362 if (!eth_addr_is_zero(nd_key->nd_tll)) {
1363 ds_put_format(ds, ",tll="ETH_ADDR_FMT,
1364 ETH_ADDR_ARGS(nd_key->nd_tll));
1365 if (!is_exact) {
1366 ds_put_format(ds, "/"ETH_ADDR_FMT,
1367 ETH_ADDR_ARGS(nd_mask->nd_tll));
1368 }
1369 }
1370 break;
1371 }
1372
1373 case OVS_KEY_ATTR_UNSPEC:
1374 case __OVS_KEY_ATTR_MAX:
1375 default:
1376 format_generic_odp_key(a, ds);
1377 if (!is_exact) {
1378 ds_put_char(ds, '/');
1379 format_generic_odp_key(ma, ds);
1380 }
1381 break;
1382 }
1383 ds_put_char(ds, ')');
1384 }
1385
1386 static struct nlattr *
1387 generate_all_wildcard_mask(struct ofpbuf *ofp, const struct nlattr *key)
1388 {
1389 const struct nlattr *a;
1390 unsigned int left;
1391 int type = nl_attr_type(key);
1392 int size = nl_attr_get_size(key);
1393
1394 if (odp_flow_key_attr_len(type) >=0) {
1395 nl_msg_put_unspec_zero(ofp, type, size);
1396 } else {
1397 size_t nested_mask;
1398
1399 nested_mask = nl_msg_start_nested(ofp, type);
1400 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
1401 generate_all_wildcard_mask(ofp, nl_attr_get(a));
1402 }
1403 nl_msg_end_nested(ofp, nested_mask);
1404 }
1405
1406 return ofp->base;
1407 }
1408
1409 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1410 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
1411 * 'mask_len' bytes of 'mask' which apply to 'key'. If 'portno_names' is
1412 * non-null and 'verbose' is true, translates odp port number to its name. */
1413 void
1414 odp_flow_format(const struct nlattr *key, size_t key_len,
1415 const struct nlattr *mask, size_t mask_len,
1416 const struct hmap *portno_names, struct ds *ds, bool verbose)
1417 {
1418 if (key_len) {
1419 const struct nlattr *a;
1420 unsigned int left;
1421 bool has_ethtype_key = false;
1422 const struct nlattr *ma = NULL;
1423 struct ofpbuf ofp;
1424 bool first_field = true;
1425
1426 ofpbuf_init(&ofp, 100);
1427 NL_ATTR_FOR_EACH (a, left, key, key_len) {
1428 bool is_nested_attr;
1429 bool is_wildcard = false;
1430 int attr_type = nl_attr_type(a);
1431
1432 if (attr_type == OVS_KEY_ATTR_ETHERTYPE) {
1433 has_ethtype_key = true;
1434 }
1435
1436 is_nested_attr = (odp_flow_key_attr_len(attr_type) == -2);
1437
1438 if (mask && mask_len) {
1439 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
1440 is_wildcard = ma ? odp_mask_attr_is_wildcard(ma) : true;
1441 }
1442
1443 if (verbose || !is_wildcard || is_nested_attr) {
1444 if (is_wildcard && !ma) {
1445 ma = generate_all_wildcard_mask(&ofp, a);
1446 }
1447 if (!first_field) {
1448 ds_put_char(ds, ',');
1449 }
1450 format_odp_key_attr(a, ma, portno_names, ds, verbose);
1451 first_field = false;
1452 }
1453 ofpbuf_clear(&ofp);
1454 }
1455 ofpbuf_uninit(&ofp);
1456
1457 if (left) {
1458 int i;
1459
1460 if (left == key_len) {
1461 ds_put_cstr(ds, "<empty>");
1462 }
1463 ds_put_format(ds, ",***%u leftover bytes*** (", left);
1464 for (i = 0; i < left; i++) {
1465 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
1466 }
1467 ds_put_char(ds, ')');
1468 }
1469 if (!has_ethtype_key) {
1470 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
1471 if (ma) {
1472 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
1473 ntohs(nl_attr_get_be16(ma)));
1474 }
1475 }
1476 } else {
1477 ds_put_cstr(ds, "<empty>");
1478 }
1479 }
1480
1481 /* Appends to 'ds' a string representation of the 'key_len' bytes of
1482 * OVS_KEY_ATTR_* attributes in 'key'. */
1483 void
1484 odp_flow_key_format(const struct nlattr *key,
1485 size_t key_len, struct ds *ds)
1486 {
1487 odp_flow_format(key, key_len, NULL, 0, NULL, ds, true);
1488 }
1489
1490 static void
1491 put_nd(struct ovs_key_nd* nd_key, const uint8_t *nd_sll,
1492 const uint8_t *nd_tll, struct ofpbuf *key)
1493 {
1494 if (nd_sll) {
1495 memcpy(nd_key->nd_sll, nd_sll, ETH_ADDR_LEN);
1496 }
1497
1498 if (nd_tll) {
1499 memcpy(nd_key->nd_tll, nd_tll, ETH_ADDR_LEN);
1500 }
1501
1502 nl_msg_put_unspec(key, OVS_KEY_ATTR_ND, nd_key, sizeof *nd_key);
1503 }
1504
1505 static int
1506 put_nd_key(int n, const char *nd_target_s, const uint8_t *nd_sll,
1507 const uint8_t *nd_tll, struct ofpbuf *key)
1508 {
1509 struct ovs_key_nd nd_key;
1510
1511 memset(&nd_key, 0, sizeof nd_key);
1512
1513 if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
1514 return -EINVAL;
1515 }
1516
1517 put_nd(&nd_key, nd_sll, nd_tll, key);
1518 return n;
1519 }
1520
1521 static int
1522 put_nd_mask(int n, const char *nd_target_s,
1523 const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *mask)
1524 {
1525 struct ovs_key_nd nd_mask;
1526
1527 memset(&nd_mask, 0xff, sizeof nd_mask);
1528
1529 if (strlen(nd_target_s) != 0 &&
1530 inet_pton(AF_INET6, nd_target_s, nd_mask.nd_target) != 1) {
1531 return -EINVAL;
1532 }
1533
1534 put_nd(&nd_mask, nd_sll, nd_tll, mask);
1535 return n;
1536 }
1537
1538 static bool
1539 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
1540 {
1541 if (!strcasecmp(s, "no")) {
1542 *type = OVS_FRAG_TYPE_NONE;
1543 } else if (!strcasecmp(s, "first")) {
1544 *type = OVS_FRAG_TYPE_FIRST;
1545 } else if (!strcasecmp(s, "later")) {
1546 *type = OVS_FRAG_TYPE_LATER;
1547 } else {
1548 return false;
1549 }
1550 return true;
1551 }
1552
1553 static ovs_be32
1554 mpls_lse_from_components(int mpls_label, int mpls_tc, int mpls_ttl, int mpls_bos)
1555 {
1556 return (htonl((mpls_label << MPLS_LABEL_SHIFT) |
1557 (mpls_tc << MPLS_TC_SHIFT) |
1558 (mpls_ttl << MPLS_TTL_SHIFT) |
1559 (mpls_bos << MPLS_BOS_SHIFT)));
1560 }
1561
1562 static int
1563 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
1564 struct ofpbuf *key, struct ofpbuf *mask)
1565 {
1566 /* Many of the sscanf calls in this function use oversized destination
1567 * fields because some sscanf() implementations truncate the range of %i
1568 * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
1569 * value of 0x7fff. The other alternatives are to allow only a single
1570 * radix (e.g. decimal or hexadecimal) or to write more sophisticated
1571 * parsers.
1572 *
1573 * The tun_id parser has to use an alternative approach because there is no
1574 * type larger than 64 bits. */
1575
1576 {
1577 unsigned long long int priority;
1578 unsigned long long int priority_mask;
1579 int n = -1;
1580
1581 if (mask && sscanf(s, "skb_priority(%lli/%lli)%n", &priority,
1582 &priority_mask, &n) > 0 && n > 0) {
1583 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1584 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, priority_mask);
1585 return n;
1586 } else if (sscanf(s, "skb_priority(%lli)%n",
1587 &priority, &n) > 0 && n > 0) {
1588 nl_msg_put_u32(key, OVS_KEY_ATTR_PRIORITY, priority);
1589 if (mask) {
1590 nl_msg_put_u32(mask, OVS_KEY_ATTR_PRIORITY, UINT32_MAX);
1591 }
1592 return n;
1593 }
1594 }
1595
1596 {
1597 unsigned long long int mark;
1598 unsigned long long int mark_mask;
1599 int n = -1;
1600
1601 if (mask && sscanf(s, "skb_mark(%lli/%lli)%n", &mark,
1602 &mark_mask, &n) > 0 && n > 0) {
1603 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1604 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, mark_mask);
1605 return n;
1606 } else if (sscanf(s, "skb_mark(%lli)%n", &mark, &n) > 0 && n > 0) {
1607 nl_msg_put_u32(key, OVS_KEY_ATTR_SKB_MARK, mark);
1608 if (mask) {
1609 nl_msg_put_u32(mask, OVS_KEY_ATTR_SKB_MARK, UINT32_MAX);
1610 }
1611 return n;
1612 }
1613 }
1614
1615 {
1616 char tun_id_s[32];
1617 int tos, tos_mask, ttl, ttl_mask;
1618 struct flow_tnl tun_key, tun_key_mask;
1619 unsigned long long tun_id_mask;
1620 int n = -1;
1621
1622 if (mask && sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF]/%llx,"
1623 "src="IP_SCAN_FMT"/"IP_SCAN_FMT",dst="IP_SCAN_FMT
1624 "/"IP_SCAN_FMT",tos=%i/%i,ttl=%i/%i,flags%n",
1625 tun_id_s, &tun_id_mask,
1626 IP_SCAN_ARGS(&tun_key.ip_src),
1627 IP_SCAN_ARGS(&tun_key_mask.ip_src),
1628 IP_SCAN_ARGS(&tun_key.ip_dst),
1629 IP_SCAN_ARGS(&tun_key_mask.ip_dst),
1630 &tos, &tos_mask, &ttl, &ttl_mask,
1631 &n) > 0 && n > 0) {
1632 int res;
1633 uint32_t flags;
1634
1635 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1636 tun_key_mask.tun_id = htonll(tun_id_mask);
1637 tun_key.ip_tos = tos;
1638 tun_key_mask.ip_tos = tos_mask;
1639 tun_key.ip_ttl = ttl;
1640 tun_key_mask.ip_ttl = ttl_mask;
1641 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1642 tun_key.flags = flags;
1643 tun_key_mask.flags = UINT16_MAX;
1644
1645 if (res < 0) {
1646 return res;
1647 }
1648 n += res;
1649 if (s[n] != ')') {
1650 return -EINVAL;
1651 }
1652 n++;
1653 tun_key_to_attr(key, &tun_key);
1654 if (mask) {
1655 tun_key_to_attr(mask, &tun_key_mask);
1656 }
1657 return n;
1658 } else if (sscanf(s, "tunnel(tun_id=%31[x0123456789abcdefABCDEF],"
1659 "src="IP_SCAN_FMT",dst="IP_SCAN_FMT
1660 ",tos=%i,ttl=%i,flags%n", tun_id_s,
1661 IP_SCAN_ARGS(&tun_key.ip_src),
1662 IP_SCAN_ARGS(&tun_key.ip_dst), &tos, &ttl,
1663 &n) > 0 && n > 0) {
1664 int res;
1665 uint32_t flags;
1666
1667 tun_key.tun_id = htonll(strtoull(tun_id_s, NULL, 0));
1668 tun_key.ip_tos = tos;
1669 tun_key.ip_ttl = ttl;
1670 res = parse_flags(&s[n], flow_tun_flag_to_string, &flags);
1671 tun_key.flags = flags;
1672
1673 if (res < 0) {
1674 return res;
1675 }
1676 n += res;
1677 if (s[n] != ')') {
1678 return -EINVAL;
1679 }
1680 n++;
1681 tun_key_to_attr(key, &tun_key);
1682
1683 if (mask) {
1684 memset(&tun_key, 0xff, sizeof tun_key);
1685 tun_key_to_attr(mask, &tun_key);
1686 }
1687 return n;
1688 }
1689 }
1690
1691 {
1692 unsigned long long int in_port;
1693 unsigned long long int in_port_mask;
1694 int n = -1;
1695
1696 if (mask && sscanf(s, "in_port(%lli/%lli)%n", &in_port,
1697 &in_port_mask, &n) > 0 && n > 0) {
1698 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1699 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, in_port_mask);
1700 return n;
1701 } else if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
1702 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, in_port);
1703 if (mask) {
1704 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1705 }
1706 return n;
1707 }
1708 }
1709
1710
1711 if (port_names && !strncmp(s, "in_port(", 8)) {
1712 const char *name;
1713 const struct simap_node *node;
1714 int name_len;
1715
1716 name = s + 8;
1717 name_len = strcspn(name, ")");
1718 node = simap_find_len(port_names, name, name_len);
1719 if (node) {
1720 nl_msg_put_u32(key, OVS_KEY_ATTR_IN_PORT, node->data);
1721
1722 if (mask) {
1723 nl_msg_put_u32(mask, OVS_KEY_ATTR_IN_PORT, UINT32_MAX);
1724 }
1725 return 8 + name_len + 1;
1726 }
1727 }
1728
1729 {
1730 struct ovs_key_ethernet eth_key;
1731 struct ovs_key_ethernet eth_key_mask;
1732 int n = -1;
1733
1734 if (mask && sscanf(s,
1735 "eth(src="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
1736 "dst="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
1737 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1738 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_src),
1739 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst),
1740 ETH_ADDR_SCAN_ARGS(eth_key_mask.eth_dst), &n) > 0 && n > 0) {
1741
1742 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1743 &eth_key, sizeof eth_key);
1744 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1745 &eth_key_mask, sizeof eth_key_mask);
1746 return n;
1747 } else if (sscanf(s,
1748 "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
1749 ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
1750 ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
1751 nl_msg_put_unspec(key, OVS_KEY_ATTR_ETHERNET,
1752 &eth_key, sizeof eth_key);
1753
1754 if (mask) {
1755 memset(&eth_key, 0xff, sizeof eth_key);
1756 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ETHERNET,
1757 &eth_key, sizeof eth_key);
1758 }
1759 return n;
1760 }
1761 }
1762
1763 {
1764 uint16_t vid, vid_mask;
1765 int pcp, pcp_mask;
1766 int cfi, cfi_mask;
1767 int n = -1;
1768
1769 if (mask && (sscanf(s, "vlan(vid=%"SCNi16"/%"SCNi16",pcp=%i/%i)%n",
1770 &vid, &vid_mask, &pcp, &pcp_mask, &n) > 0 && n > 0)) {
1771 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1772 htons((vid << VLAN_VID_SHIFT) |
1773 (pcp << VLAN_PCP_SHIFT) |
1774 VLAN_CFI));
1775 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1776 htons((vid_mask << VLAN_VID_SHIFT) |
1777 (pcp_mask << VLAN_PCP_SHIFT) |
1778 (1 << VLAN_CFI_SHIFT)));
1779 return n;
1780 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n",
1781 &vid, &pcp, &n) > 0 && n > 0)) {
1782 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1783 htons((vid << VLAN_VID_SHIFT) |
1784 (pcp << VLAN_PCP_SHIFT) |
1785 VLAN_CFI));
1786 if (mask) {
1787 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1788 }
1789 return n;
1790 } else if (mask && (sscanf(s, "vlan(vid=%"SCNi16"/%"SCNi16",pcp=%i/%i,cfi=%i/%i)%n",
1791 &vid, &vid_mask, &pcp, &pcp_mask, &cfi, &cfi_mask, &n) > 0 && n > 0)) {
1792 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1793 htons((vid << VLAN_VID_SHIFT) |
1794 (pcp << VLAN_PCP_SHIFT) |
1795 (cfi ? VLAN_CFI : 0)));
1796 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN,
1797 htons((vid_mask << VLAN_VID_SHIFT) |
1798 (pcp_mask << VLAN_PCP_SHIFT) |
1799 (cfi_mask << VLAN_CFI_SHIFT)));
1800 return n;
1801 } else if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i,cfi=%i)%n",
1802 &vid, &pcp, &cfi, &n) > 0 && n > 0)) {
1803 nl_msg_put_be16(key, OVS_KEY_ATTR_VLAN,
1804 htons((vid << VLAN_VID_SHIFT) |
1805 (pcp << VLAN_PCP_SHIFT) |
1806 (cfi ? VLAN_CFI : 0)));
1807 if (mask) {
1808 nl_msg_put_be16(mask, OVS_KEY_ATTR_VLAN, OVS_BE16_MAX);
1809 }
1810 return n;
1811 }
1812 }
1813
1814 {
1815 int eth_type;
1816 int eth_type_mask;
1817 int n = -1;
1818
1819 if (mask && sscanf(s, "eth_type(%i/%i)%n",
1820 &eth_type, &eth_type_mask, &n) > 0 && n > 0) {
1821 if (eth_type != 0) {
1822 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1823 }
1824 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type_mask));
1825 return n;
1826 } else if (sscanf(s, "eth_type(%i)%n", &eth_type, &n) > 0 && n > 0) {
1827 nl_msg_put_be16(key, OVS_KEY_ATTR_ETHERTYPE, htons(eth_type));
1828 if (mask) {
1829 nl_msg_put_be16(mask, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
1830 }
1831 return n;
1832 }
1833 }
1834
1835 {
1836 int label, tc, ttl, bos;
1837 int label_mask, tc_mask, ttl_mask, bos_mask;
1838 int n = -1;
1839
1840 if (mask && sscanf(s, "mpls(label=%"SCNi32"/%"SCNi32",tc=%i/%i,ttl=%i/%i,bos=%i/%i)%n",
1841 &label, &label_mask, &tc, &tc_mask, &ttl, &ttl_mask, &bos, &bos_mask, &n) > 0 && n > 0) {
1842 struct ovs_key_mpls *mpls, *mpls_mask;
1843
1844 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1845 sizeof *mpls);
1846 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1847
1848 mpls_mask = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1849 sizeof *mpls_mask);
1850 mpls_mask->mpls_lse = mpls_lse_from_components(
1851 label_mask, tc_mask, ttl_mask, bos_mask);
1852 return n;
1853 } else if (sscanf(s, "mpls(label=%"SCNi32",tc=%i,ttl=%i,bos=%i)%n",
1854 &label, &tc, &ttl, &bos, &n) > 0 &&
1855 n > 0) {
1856 struct ovs_key_mpls *mpls;
1857
1858 mpls = nl_msg_put_unspec_uninit(key, OVS_KEY_ATTR_MPLS,
1859 sizeof *mpls);
1860 mpls->mpls_lse = mpls_lse_from_components(label, tc, ttl, bos);
1861 if (mask) {
1862 mpls = nl_msg_put_unspec_uninit(mask, OVS_KEY_ATTR_MPLS,
1863 sizeof *mpls);
1864 mpls->mpls_lse = OVS_BE32_MAX;
1865 }
1866 return n;
1867 }
1868 }
1869
1870
1871 {
1872 ovs_be32 ipv4_src, ipv4_src_mask;
1873 ovs_be32 ipv4_dst, ipv4_dst_mask;
1874 int ipv4_proto, ipv4_proto_mask;
1875 int ipv4_tos, ipv4_tos_mask;
1876 int ipv4_ttl, ipv4_ttl_mask;
1877 char frag[8];
1878 int ipv4_frag_mask;
1879 enum ovs_frag_type ipv4_frag;
1880 int n = -1;
1881
1882 if (mask && sscanf(s, "ipv4(src="IP_SCAN_FMT"/"IP_SCAN_FMT","
1883 "dst="IP_SCAN_FMT"/"IP_SCAN_FMT","
1884 "proto=%i/%i,tos=%i/%i,ttl=%i/%i,"
1885 "frag=%7[a-z]/%i)%n",
1886 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_src_mask),
1887 IP_SCAN_ARGS(&ipv4_dst), IP_SCAN_ARGS(&ipv4_dst_mask),
1888 &ipv4_proto, &ipv4_proto_mask,
1889 &ipv4_tos, &ipv4_tos_mask, &ipv4_ttl, &ipv4_ttl_mask,
1890 frag, &ipv4_frag_mask, &n) > 0
1891 && n > 0
1892 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1893 struct ovs_key_ipv4 ipv4_key;
1894 struct ovs_key_ipv4 ipv4_mask;
1895
1896 ipv4_key.ipv4_src = ipv4_src;
1897 ipv4_key.ipv4_dst = ipv4_dst;
1898 ipv4_key.ipv4_proto = ipv4_proto;
1899 ipv4_key.ipv4_tos = ipv4_tos;
1900 ipv4_key.ipv4_ttl = ipv4_ttl;
1901 ipv4_key.ipv4_frag = ipv4_frag;
1902 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1903 &ipv4_key, sizeof ipv4_key);
1904
1905 ipv4_mask.ipv4_src = ipv4_src_mask;
1906 ipv4_mask.ipv4_dst = ipv4_dst_mask;
1907 ipv4_mask.ipv4_proto = ipv4_proto_mask;
1908 ipv4_mask.ipv4_tos = ipv4_tos_mask;
1909 ipv4_mask.ipv4_ttl = ipv4_ttl_mask;
1910 ipv4_mask.ipv4_frag = ipv4_frag_mask;
1911 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1912 &ipv4_mask, sizeof ipv4_mask);
1913 return n;
1914 } else if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
1915 "proto=%i,tos=%i,ttl=%i,frag=%7[a-z])%n",
1916 IP_SCAN_ARGS(&ipv4_src), IP_SCAN_ARGS(&ipv4_dst),
1917 &ipv4_proto, &ipv4_tos, &ipv4_ttl, frag, &n) > 0
1918 && n > 0
1919 && ovs_frag_type_from_string(frag, &ipv4_frag)) {
1920 struct ovs_key_ipv4 ipv4_key;
1921
1922 ipv4_key.ipv4_src = ipv4_src;
1923 ipv4_key.ipv4_dst = ipv4_dst;
1924 ipv4_key.ipv4_proto = ipv4_proto;
1925 ipv4_key.ipv4_tos = ipv4_tos;
1926 ipv4_key.ipv4_ttl = ipv4_ttl;
1927 ipv4_key.ipv4_frag = ipv4_frag;
1928 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV4,
1929 &ipv4_key, sizeof ipv4_key);
1930
1931 if (mask) {
1932 memset(&ipv4_key, 0xff, sizeof ipv4_key);
1933 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV4,
1934 &ipv4_key, sizeof ipv4_key);
1935 }
1936 return n;
1937 }
1938 }
1939
1940 {
1941 char ipv6_src_s[IPV6_SCAN_LEN + 1];
1942 char ipv6_src_mask_s[IPV6_SCAN_LEN + 1];
1943 char ipv6_dst_s[IPV6_SCAN_LEN + 1];
1944 char ipv6_dst_mask_s[IPV6_SCAN_LEN + 1];
1945 int ipv6_label, ipv6_label_mask;
1946 int ipv6_proto, ipv6_proto_mask;
1947 int ipv6_tclass, ipv6_tclass_mask;
1948 int ipv6_hlimit, ipv6_hlimit_mask;
1949 char frag[8];
1950 enum ovs_frag_type ipv6_frag;
1951 int ipv6_frag_mask;
1952 int n = -1;
1953
1954 if (mask && sscanf(s, "ipv6(src="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT",dst="
1955 IPV6_SCAN_FMT"/"IPV6_SCAN_FMT","
1956 "label=%i/%i,proto=%i/%i,tclass=%i/%i,"
1957 "hlimit=%i/%i,frag=%7[a-z]/%i)%n",
1958 ipv6_src_s, ipv6_src_mask_s, ipv6_dst_s, ipv6_dst_mask_s,
1959 &ipv6_label, &ipv6_label_mask, &ipv6_proto,
1960 &ipv6_proto_mask, &ipv6_tclass, &ipv6_tclass_mask,
1961 &ipv6_hlimit, &ipv6_hlimit_mask, frag,
1962 &ipv6_frag_mask, &n) > 0
1963 && n > 0
1964 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1965 struct ovs_key_ipv6 ipv6_key;
1966 struct ovs_key_ipv6 ipv6_mask;
1967
1968 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
1969 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1 ||
1970 inet_pton(AF_INET6, ipv6_src_mask_s, &ipv6_mask.ipv6_src) != 1 ||
1971 inet_pton(AF_INET6, ipv6_dst_mask_s, &ipv6_mask.ipv6_dst) != 1) {
1972 return -EINVAL;
1973 }
1974
1975 ipv6_key.ipv6_label = htonl(ipv6_label);
1976 ipv6_key.ipv6_proto = ipv6_proto;
1977 ipv6_key.ipv6_tclass = ipv6_tclass;
1978 ipv6_key.ipv6_hlimit = ipv6_hlimit;
1979 ipv6_key.ipv6_frag = ipv6_frag;
1980 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
1981 &ipv6_key, sizeof ipv6_key);
1982
1983 ipv6_mask.ipv6_label = htonl(ipv6_label_mask);
1984 ipv6_mask.ipv6_proto = ipv6_proto_mask;
1985 ipv6_mask.ipv6_tclass = ipv6_tclass_mask;
1986 ipv6_mask.ipv6_hlimit = ipv6_hlimit_mask;
1987 ipv6_mask.ipv6_frag = ipv6_frag_mask;
1988 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
1989 &ipv6_mask, sizeof ipv6_mask);
1990 return n;
1991 } else if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
1992 "label=%i,proto=%i,tclass=%i,hlimit=%i,frag=%7[a-z])%n",
1993 ipv6_src_s, ipv6_dst_s, &ipv6_label,
1994 &ipv6_proto, &ipv6_tclass, &ipv6_hlimit, frag, &n) > 0
1995 && n > 0
1996 && ovs_frag_type_from_string(frag, &ipv6_frag)) {
1997 struct ovs_key_ipv6 ipv6_key;
1998
1999 if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
2000 inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
2001 return -EINVAL;
2002 }
2003 ipv6_key.ipv6_label = htonl(ipv6_label);
2004 ipv6_key.ipv6_proto = ipv6_proto;
2005 ipv6_key.ipv6_tclass = ipv6_tclass;
2006 ipv6_key.ipv6_hlimit = ipv6_hlimit;
2007 ipv6_key.ipv6_frag = ipv6_frag;
2008 nl_msg_put_unspec(key, OVS_KEY_ATTR_IPV6,
2009 &ipv6_key, sizeof ipv6_key);
2010
2011 if (mask) {
2012 memset(&ipv6_key, 0xff, sizeof ipv6_key);
2013 nl_msg_put_unspec(mask, OVS_KEY_ATTR_IPV6,
2014 &ipv6_key, sizeof ipv6_key);
2015 }
2016 return n;
2017 }
2018 }
2019
2020 {
2021 int tcp_src;
2022 int tcp_dst;
2023 int tcp_src_mask;
2024 int tcp_dst_mask;
2025 int n = -1;
2026
2027 if (mask && sscanf(s, "tcp(src=%i/%i,dst=%i/%i)%n",
2028 &tcp_src, &tcp_src_mask, &tcp_dst, &tcp_dst_mask, &n) > 0
2029 && n > 0) {
2030 struct ovs_key_tcp tcp_key;
2031 struct ovs_key_tcp tcp_mask;
2032
2033 tcp_key.tcp_src = htons(tcp_src);
2034 tcp_key.tcp_dst = htons(tcp_dst);
2035 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2036
2037 tcp_mask.tcp_src = htons(tcp_src_mask);
2038 tcp_mask.tcp_dst = htons(tcp_dst_mask);
2039 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2040 &tcp_mask, sizeof tcp_mask);
2041 return n;
2042 } else if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
2043 && n > 0) {
2044 struct ovs_key_tcp tcp_key;
2045
2046 tcp_key.tcp_src = htons(tcp_src);
2047 tcp_key.tcp_dst = htons(tcp_dst);
2048 nl_msg_put_unspec(key, OVS_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
2049
2050 if (mask) {
2051 memset(&tcp_key, 0xff, sizeof tcp_key);
2052 nl_msg_put_unspec(mask, OVS_KEY_ATTR_TCP,
2053 &tcp_key, sizeof tcp_key);
2054 }
2055 return n;
2056 }
2057 }
2058
2059 {
2060 uint16_t tcp_flags, tcp_flags_mask;
2061 int n = -1;
2062
2063 if (mask && sscanf(s, "tcp_flags(%"SCNi16"/%"SCNi16")%n",
2064 &tcp_flags, &tcp_flags_mask, &n) > 0 && n > 0) {
2065 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2066 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags_mask));
2067 return n;
2068 } else if (sscanf(s, "tcp_flags(%"SCNi16")%n", &tcp_flags, &n) > 0 && n > 0) {
2069 nl_msg_put_be16(key, OVS_KEY_ATTR_TCP_FLAGS, htons(tcp_flags));
2070 if (mask) {
2071 nl_msg_put_be16(mask, OVS_KEY_ATTR_TCP_FLAGS,
2072 htons(UINT16_MAX));
2073 }
2074 return n;
2075 }
2076 }
2077
2078 {
2079 int udp_src;
2080 int udp_dst;
2081 int udp_src_mask;
2082 int udp_dst_mask;
2083 int n = -1;
2084
2085 if (mask && sscanf(s, "udp(src=%i/%i,dst=%i/%i)%n",
2086 &udp_src, &udp_src_mask,
2087 &udp_dst, &udp_dst_mask, &n) > 0 && n > 0) {
2088 struct ovs_key_udp udp_key;
2089 struct ovs_key_udp udp_mask;
2090
2091 udp_key.udp_src = htons(udp_src);
2092 udp_key.udp_dst = htons(udp_dst);
2093 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2094
2095 udp_mask.udp_src = htons(udp_src_mask);
2096 udp_mask.udp_dst = htons(udp_dst_mask);
2097 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP,
2098 &udp_mask, sizeof udp_mask);
2099 return n;
2100 }
2101 if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
2102 && n > 0) {
2103 struct ovs_key_udp udp_key;
2104
2105 udp_key.udp_src = htons(udp_src);
2106 udp_key.udp_dst = htons(udp_dst);
2107 nl_msg_put_unspec(key, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2108
2109 if (mask) {
2110 memset(&udp_key, 0xff, sizeof udp_key);
2111 nl_msg_put_unspec(mask, OVS_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
2112 }
2113 return n;
2114 }
2115 }
2116
2117 {
2118 int sctp_src;
2119 int sctp_dst;
2120 int sctp_src_mask;
2121 int sctp_dst_mask;
2122 int n = -1;
2123
2124 if (mask && sscanf(s, "sctp(src=%i/%i,dst=%i/%i)%n",
2125 &sctp_src, &sctp_src_mask,
2126 &sctp_dst, &sctp_dst_mask, &n) > 0 && n > 0) {
2127 struct ovs_key_sctp sctp_key;
2128 struct ovs_key_sctp sctp_mask;
2129
2130 sctp_key.sctp_src = htons(sctp_src);
2131 sctp_key.sctp_dst = htons(sctp_dst);
2132 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2133
2134 sctp_mask.sctp_src = htons(sctp_src_mask);
2135 sctp_mask.sctp_dst = htons(sctp_dst_mask);
2136 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP,
2137 &sctp_mask, sizeof sctp_mask);
2138 return n;
2139 }
2140 if (sscanf(s, "sctp(src=%i,dst=%i)%n", &sctp_src, &sctp_dst, &n) > 0
2141 && n > 0) {
2142 struct ovs_key_sctp sctp_key;
2143
2144 sctp_key.sctp_src = htons(sctp_src);
2145 sctp_key.sctp_dst = htons(sctp_dst);
2146 nl_msg_put_unspec(key, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2147
2148 if (mask) {
2149 memset(&sctp_key, 0xff, sizeof sctp_key);
2150 nl_msg_put_unspec(mask, OVS_KEY_ATTR_SCTP, &sctp_key, sizeof sctp_key);
2151 }
2152 return n;
2153 }
2154 }
2155
2156 {
2157 int icmp_type;
2158 int icmp_code;
2159 int icmp_type_mask;
2160 int icmp_code_mask;
2161 int n = -1;
2162
2163 if (mask && sscanf(s, "icmp(type=%i/%i,code=%i/%i)%n",
2164 &icmp_type, &icmp_type_mask,
2165 &icmp_code, &icmp_code_mask, &n) > 0 && n > 0) {
2166 struct ovs_key_icmp icmp_key;
2167 struct ovs_key_icmp icmp_mask;
2168
2169 icmp_key.icmp_type = icmp_type;
2170 icmp_key.icmp_code = icmp_code;
2171 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2172 &icmp_key, sizeof icmp_key);
2173
2174 icmp_mask.icmp_type = icmp_type_mask;
2175 icmp_mask.icmp_code = icmp_code_mask;
2176 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP,
2177 &icmp_mask, sizeof icmp_mask);
2178 return n;
2179 } else if (sscanf(s, "icmp(type=%i,code=%i)%n",
2180 &icmp_type, &icmp_code, &n) > 0
2181 && n > 0) {
2182 struct ovs_key_icmp icmp_key;
2183
2184 icmp_key.icmp_type = icmp_type;
2185 icmp_key.icmp_code = icmp_code;
2186 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMP,
2187 &icmp_key, sizeof icmp_key);
2188 if (mask) {
2189 memset(&icmp_key, 0xff, sizeof icmp_key);
2190 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMP, &icmp_key,
2191 sizeof icmp_key);
2192 }
2193 return n;
2194 }
2195 }
2196
2197 {
2198 struct ovs_key_icmpv6 icmpv6_key;
2199 struct ovs_key_icmpv6 icmpv6_mask;
2200 int icmpv6_type_mask;
2201 int icmpv6_code_mask;
2202 int n = -1;
2203
2204 if (mask && sscanf(s, "icmpv6(type=%"SCNi8"/%i,code=%"SCNi8"/%i)%n",
2205 &icmpv6_key.icmpv6_type, &icmpv6_type_mask,
2206 &icmpv6_key.icmpv6_code, &icmpv6_code_mask, &n) > 0
2207 && n > 0) {
2208 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2209 &icmpv6_key, sizeof icmpv6_key);
2210
2211 icmpv6_mask.icmpv6_type = icmpv6_type_mask;
2212 icmpv6_mask.icmpv6_code = icmpv6_code_mask;
2213 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_mask,
2214 sizeof icmpv6_mask);
2215 return n;
2216 } else if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
2217 &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
2218 && n > 0) {
2219 nl_msg_put_unspec(key, OVS_KEY_ATTR_ICMPV6,
2220 &icmpv6_key, sizeof icmpv6_key);
2221
2222 if (mask) {
2223 memset(&icmpv6_key, 0xff, sizeof icmpv6_key);
2224 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ICMPV6, &icmpv6_key,
2225 sizeof icmpv6_key);
2226 }
2227 return n;
2228 }
2229 }
2230
2231 {
2232 ovs_be32 arp_sip, arp_sip_mask;
2233 ovs_be32 arp_tip, arp_tip_mask;
2234 int arp_op, arp_op_mask;
2235 uint8_t arp_sha[ETH_ADDR_LEN];
2236 uint8_t arp_sha_mask[ETH_ADDR_LEN];
2237 uint8_t arp_tha[ETH_ADDR_LEN];
2238 uint8_t arp_tha_mask[ETH_ADDR_LEN];
2239 int n = -1;
2240
2241 if (mask && sscanf(s, "arp(sip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2242 "tip="IP_SCAN_FMT"/"IP_SCAN_FMT","
2243 "op=%i/%i,sha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2244 "tha="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2245 IP_SCAN_ARGS(&arp_sip), IP_SCAN_ARGS(&arp_sip_mask),
2246 IP_SCAN_ARGS(&arp_tip), IP_SCAN_ARGS(&arp_tip_mask),
2247 &arp_op, &arp_op_mask,
2248 ETH_ADDR_SCAN_ARGS(arp_sha),
2249 ETH_ADDR_SCAN_ARGS(arp_sha_mask),
2250 ETH_ADDR_SCAN_ARGS(arp_tha),
2251 ETH_ADDR_SCAN_ARGS(arp_tha_mask), &n) > 0 && n > 0) {
2252 struct ovs_key_arp arp_key;
2253 struct ovs_key_arp arp_mask;
2254
2255 memset(&arp_key, 0, sizeof arp_key);
2256 arp_key.arp_sip = arp_sip;
2257 arp_key.arp_tip = arp_tip;
2258 arp_key.arp_op = htons(arp_op);
2259 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
2260 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
2261 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2262
2263 arp_mask.arp_sip = arp_sip_mask;
2264 arp_mask.arp_tip = arp_tip_mask;
2265 arp_mask.arp_op = htons(arp_op_mask);
2266 memcpy(arp_mask.arp_sha, arp_sha_mask, ETH_ADDR_LEN);
2267 memcpy(arp_mask.arp_tha, arp_tha_mask, ETH_ADDR_LEN);
2268 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2269 &arp_mask, sizeof arp_mask);
2270 return n;
2271 } else if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
2272 "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
2273 IP_SCAN_ARGS(&arp_sip),
2274 IP_SCAN_ARGS(&arp_tip),
2275 &arp_op,
2276 ETH_ADDR_SCAN_ARGS(arp_sha),
2277 ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
2278 struct ovs_key_arp arp_key;
2279
2280 memset(&arp_key, 0, sizeof arp_key);
2281 arp_key.arp_sip = arp_sip;
2282 arp_key.arp_tip = arp_tip;
2283 arp_key.arp_op = htons(arp_op);
2284 memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
2285 memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
2286 nl_msg_put_unspec(key, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
2287
2288 if (mask) {
2289 memset(&arp_key, 0xff, sizeof arp_key);
2290 nl_msg_put_unspec(mask, OVS_KEY_ATTR_ARP,
2291 &arp_key, sizeof arp_key);
2292 }
2293 return n;
2294 }
2295 }
2296
2297 {
2298 char nd_target_s[IPV6_SCAN_LEN + 1];
2299 char nd_target_mask_s[IPV6_SCAN_LEN + 1];
2300 uint8_t nd_sll[ETH_ADDR_LEN];
2301 uint8_t nd_sll_mask[ETH_ADDR_LEN];
2302 uint8_t nd_tll[ETH_ADDR_LEN];
2303 uint8_t nd_tll_mask[ETH_ADDR_LEN];
2304 int n = -1;
2305
2306 nd_target_mask_s[0] = 0;
2307 memset(nd_sll_mask, 0xff, sizeof nd_sll_mask);
2308 memset(nd_tll_mask, 0xff, sizeof nd_tll_mask);
2309
2310 if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT")%n",
2311 nd_target_s, nd_target_mask_s, &n) > 0 && n > 0) {
2312 put_nd_key(n, nd_target_s, NULL, NULL, key);
2313 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2314 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
2315 nd_target_s, &n) > 0 && n > 0) {
2316 put_nd_key(n, nd_target_s, NULL, NULL, key);
2317 if (mask) {
2318 put_nd_mask(n, nd_target_mask_s, NULL, NULL, mask);
2319 }
2320 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2321 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2322 nd_target_s, nd_target_mask_s,
2323 ETH_ADDR_SCAN_ARGS(nd_sll),
2324 ETH_ADDR_SCAN_ARGS(nd_sll_mask), &n) > 0 && n > 0) {
2325 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2326 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2327 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
2328 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
2329 && n > 0) {
2330 put_nd_key(n, nd_target_s, nd_sll, NULL, key);
2331 if (mask) {
2332 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, NULL, mask);
2333 }
2334 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2335 ",tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2336 nd_target_s, nd_target_mask_s,
2337 ETH_ADDR_SCAN_ARGS(nd_tll),
2338 ETH_ADDR_SCAN_ARGS(nd_tll_mask), &n) > 0 && n > 0) {
2339 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2340 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2341 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
2342 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
2343 && n > 0) {
2344 put_nd_key(n, nd_target_s, NULL, nd_tll, key);
2345 if (mask) {
2346 put_nd_mask(n, nd_target_mask_s, NULL, nd_tll_mask, mask);
2347 }
2348 } else if (mask && sscanf(s, "nd(target="IPV6_SCAN_FMT"/"IPV6_SCAN_FMT
2349 ",sll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT","
2350 "tll="ETH_ADDR_SCAN_FMT"/"ETH_ADDR_SCAN_FMT")%n",
2351 nd_target_s, nd_target_mask_s,
2352 ETH_ADDR_SCAN_ARGS(nd_sll), ETH_ADDR_SCAN_ARGS(nd_sll_mask),
2353 ETH_ADDR_SCAN_ARGS(nd_tll), ETH_ADDR_SCAN_ARGS(nd_tll_mask),
2354 &n) > 0
2355 && n > 0) {
2356 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2357 put_nd_mask(n, nd_target_mask_s, nd_sll_mask, nd_tll_mask, mask);
2358 } else if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
2359 "tll="ETH_ADDR_SCAN_FMT")%n",
2360 nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
2361 ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
2362 && n > 0) {
2363 put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
2364 if (mask) {
2365 put_nd_mask(n, nd_target_mask_s,
2366 nd_sll_mask, nd_tll_mask, mask);
2367 }
2368 }
2369
2370 if (n != -1)
2371 return n;
2372
2373 }
2374
2375 if (!strncmp(s, "encap(", 6)) {
2376 const char *start = s;
2377 size_t encap, encap_mask = 0;
2378
2379 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
2380 if (mask) {
2381 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
2382 }
2383
2384 s += 6;
2385 for (;;) {
2386 int retval;
2387
2388 s += strspn(s, ", \t\r\n");
2389 if (!*s) {
2390 return -EINVAL;
2391 } else if (*s == ')') {
2392 break;
2393 }
2394
2395 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2396 if (retval < 0) {
2397 return retval;
2398 }
2399 s += retval;
2400 }
2401 s++;
2402
2403 nl_msg_end_nested(key, encap);
2404 if (mask) {
2405 nl_msg_end_nested(mask, encap_mask);
2406 }
2407
2408 return s - start;
2409 }
2410
2411 return -EINVAL;
2412 }
2413
2414 /* Parses the string representation of a datapath flow key, in the
2415 * format output by odp_flow_key_format(). Returns 0 if successful,
2416 * otherwise a positive errno value. On success, the flow key is
2417 * appended to 'key' as a series of Netlink attributes. On failure, no
2418 * data is appended to 'key'. Either way, 'key''s data might be
2419 * reallocated.
2420 *
2421 * If 'port_names' is nonnull, it points to an simap that maps from a port name
2422 * to a port number. (Port names may be used instead of port numbers in
2423 * in_port.)
2424 *
2425 * On success, the attributes appended to 'key' are individually syntactically
2426 * valid, but they may not be valid as a sequence. 'key' might, for example,
2427 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
2428 int
2429 odp_flow_from_string(const char *s, const struct simap *port_names,
2430 struct ofpbuf *key, struct ofpbuf *mask)
2431 {
2432 const size_t old_size = key->size;
2433 for (;;) {
2434 int retval;
2435
2436 s += strspn(s, delimiters);
2437 if (!*s) {
2438 return 0;
2439 }
2440
2441 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
2442 if (retval < 0) {
2443 key->size = old_size;
2444 return -retval;
2445 }
2446 s += retval;
2447 }
2448
2449 return 0;
2450 }
2451
2452 static uint8_t
2453 ovs_to_odp_frag(uint8_t nw_frag)
2454 {
2455 return (nw_frag == 0 ? OVS_FRAG_TYPE_NONE
2456 : nw_frag == FLOW_NW_FRAG_ANY ? OVS_FRAG_TYPE_FIRST
2457 : OVS_FRAG_TYPE_LATER);
2458 }
2459
2460 static uint8_t
2461 ovs_to_odp_frag_mask(uint8_t nw_frag_mask)
2462 {
2463 uint8_t frag_mask = ~(OVS_FRAG_TYPE_FIRST | OVS_FRAG_TYPE_LATER);
2464
2465 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_ANY) ? OVS_FRAG_TYPE_FIRST : 0;
2466 frag_mask |= (nw_frag_mask & FLOW_NW_FRAG_LATER) ? OVS_FRAG_TYPE_LATER : 0;
2467
2468 return frag_mask;
2469 }
2470
2471 static void
2472 odp_flow_key_from_flow__(struct ofpbuf *buf, const struct flow *data,
2473 const struct flow *flow, odp_port_t odp_in_port)
2474 {
2475 bool is_mask;
2476 struct ovs_key_ethernet *eth_key;
2477 size_t encap;
2478
2479 /* We assume that if 'data' and 'flow' are not the same, we should
2480 * treat 'data' as a mask. */
2481 is_mask = (data != flow);
2482
2483 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
2484
2485 if (flow->tunnel.ip_dst || is_mask) {
2486 tun_key_to_attr(buf, &data->tunnel);
2487 }
2488
2489 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->pkt_mark);
2490
2491 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
2492 * is not the magical value "ODPP_NONE". */
2493 if (is_mask || odp_in_port != ODPP_NONE) {
2494 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, odp_in_port);
2495 }
2496
2497 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
2498 sizeof *eth_key);
2499 memcpy(eth_key->eth_src, data->dl_src, ETH_ADDR_LEN);
2500 memcpy(eth_key->eth_dst, data->dl_dst, ETH_ADDR_LEN);
2501
2502 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
2503 if (is_mask) {
2504 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2505 } else {
2506 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
2507 }
2508 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
2509 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
2510 if (flow->vlan_tci == htons(0)) {
2511 goto unencap;
2512 }
2513 } else {
2514 encap = 0;
2515 }
2516
2517 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2518 /* For backwards compatibility with kernels that don't support
2519 * wildcarding, the following convention is used to encode the
2520 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
2521 *
2522 * key mask matches
2523 * -------- -------- -------
2524 * >0x5ff 0xffff Specified Ethernet II Ethertype.
2525 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
2526 * <none> 0xffff Any non-Ethernet II frame (except valid
2527 * 802.3 SNAP packet with valid eth_type).
2528 */
2529 if (is_mask) {
2530 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
2531 }
2532 goto unencap;
2533 }
2534
2535 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
2536
2537 if (flow->dl_type == htons(ETH_TYPE_IP)) {
2538 struct ovs_key_ipv4 *ipv4_key;
2539
2540 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
2541 sizeof *ipv4_key);
2542 ipv4_key->ipv4_src = data->nw_src;
2543 ipv4_key->ipv4_dst = data->nw_dst;
2544 ipv4_key->ipv4_proto = data->nw_proto;
2545 ipv4_key->ipv4_tos = data->nw_tos;
2546 ipv4_key->ipv4_ttl = data->nw_ttl;
2547 ipv4_key->ipv4_frag = is_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2548 : ovs_to_odp_frag(data->nw_frag);
2549 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
2550 struct ovs_key_ipv6 *ipv6_key;
2551
2552 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
2553 sizeof *ipv6_key);
2554 memcpy(ipv6_key->ipv6_src, &data->ipv6_src, sizeof ipv6_key->ipv6_src);
2555 memcpy(ipv6_key->ipv6_dst, &data->ipv6_dst, sizeof ipv6_key->ipv6_dst);
2556 ipv6_key->ipv6_label = data->ipv6_label;
2557 ipv6_key->ipv6_proto = data->nw_proto;
2558 ipv6_key->ipv6_tclass = data->nw_tos;
2559 ipv6_key->ipv6_hlimit = data->nw_ttl;
2560 ipv6_key->ipv6_frag = is_mask ? ovs_to_odp_frag_mask(data->nw_frag)
2561 : ovs_to_odp_frag(data->nw_frag);
2562 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
2563 flow->dl_type == htons(ETH_TYPE_RARP)) {
2564 struct ovs_key_arp *arp_key;
2565
2566 arp_key = nl_msg_put_unspec_zero(buf, OVS_KEY_ATTR_ARP,
2567 sizeof *arp_key);
2568 arp_key->arp_sip = data->nw_src;
2569 arp_key->arp_tip = data->nw_dst;
2570 arp_key->arp_op = htons(data->nw_proto);
2571 memcpy(arp_key->arp_sha, data->arp_sha, ETH_ADDR_LEN);
2572 memcpy(arp_key->arp_tha, data->arp_tha, ETH_ADDR_LEN);
2573 } else if (eth_type_mpls(flow->dl_type)) {
2574 struct ovs_key_mpls *mpls_key;
2575
2576 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
2577 sizeof *mpls_key);
2578 mpls_key->mpls_lse = data->mpls_lse;
2579 }
2580
2581 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2582 if (flow->nw_proto == IPPROTO_TCP) {
2583 struct ovs_key_tcp *tcp_key;
2584
2585 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
2586 sizeof *tcp_key);
2587 tcp_key->tcp_src = data->tp_src;
2588 tcp_key->tcp_dst = data->tp_dst;
2589
2590 if (data->tcp_flags) {
2591 nl_msg_put_be16(buf, OVS_KEY_ATTR_TCP_FLAGS, data->tcp_flags);
2592 }
2593 } else if (flow->nw_proto == IPPROTO_UDP) {
2594 struct ovs_key_udp *udp_key;
2595
2596 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
2597 sizeof *udp_key);
2598 udp_key->udp_src = data->tp_src;
2599 udp_key->udp_dst = data->tp_dst;
2600 } else if (flow->nw_proto == IPPROTO_SCTP) {
2601 struct ovs_key_sctp *sctp_key;
2602
2603 sctp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_SCTP,
2604 sizeof *sctp_key);
2605 sctp_key->sctp_src = data->tp_src;
2606 sctp_key->sctp_dst = data->tp_dst;
2607 } else if (flow->dl_type == htons(ETH_TYPE_IP)
2608 && flow->nw_proto == IPPROTO_ICMP) {
2609 struct ovs_key_icmp *icmp_key;
2610
2611 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
2612 sizeof *icmp_key);
2613 icmp_key->icmp_type = ntohs(data->tp_src);
2614 icmp_key->icmp_code = ntohs(data->tp_dst);
2615 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
2616 && flow->nw_proto == IPPROTO_ICMPV6) {
2617 struct ovs_key_icmpv6 *icmpv6_key;
2618
2619 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
2620 sizeof *icmpv6_key);
2621 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
2622 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
2623
2624 if (flow->tp_dst == htons(0) &&
2625 (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
2626 flow->tp_src == htons(ND_NEIGHBOR_ADVERT)) &&
2627 (!is_mask || (data->tp_src == htons(0xffff) &&
2628 data->tp_dst == htons(0xffff)))) {
2629
2630 struct ovs_key_nd *nd_key;
2631
2632 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
2633 sizeof *nd_key);
2634 memcpy(nd_key->nd_target, &data->nd_target,
2635 sizeof nd_key->nd_target);
2636 memcpy(nd_key->nd_sll, data->arp_sha, ETH_ADDR_LEN);
2637 memcpy(nd_key->nd_tll, data->arp_tha, ETH_ADDR_LEN);
2638 }
2639 }
2640 }
2641
2642 unencap:
2643 if (encap) {
2644 nl_msg_end_nested(buf, encap);
2645 }
2646 }
2647
2648 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
2649 * 'flow->in_port' is ignored (since it is likely to be an OpenFlow port
2650 * number rather than a datapath port number). Instead, if 'odp_in_port'
2651 * is anything other than ODPP_NONE, it is included in 'buf' as the input
2652 * port.
2653 *
2654 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2655 * capable of being expanded to allow for that much space. */
2656 void
2657 odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow,
2658 odp_port_t odp_in_port)
2659 {
2660 odp_flow_key_from_flow__(buf, flow, flow, odp_in_port);
2661 }
2662
2663 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
2664 * 'buf'. 'flow' is used as a template to determine how to interpret
2665 * 'mask'. For example, the 'dl_type' of 'mask' describes the mask, but
2666 * it doesn't indicate whether the other fields should be interpreted as
2667 * ARP, IPv4, IPv6, etc.
2668 *
2669 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
2670 * capable of being expanded to allow for that much space. */
2671 void
2672 odp_flow_key_from_mask(struct ofpbuf *buf, const struct flow *mask,
2673 const struct flow *flow, uint32_t odp_in_port_mask)
2674 {
2675 odp_flow_key_from_flow__(buf, mask, flow, u32_to_odp(odp_in_port_mask));
2676 }
2677
2678 uint32_t
2679 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
2680 {
2681 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
2682 return hash_words(ALIGNED_CAST(const uint32_t *, key),
2683 key_len / sizeof(uint32_t), 0);
2684 }
2685
2686 static void
2687 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
2688 uint64_t attrs, int out_of_range_attr,
2689 const struct nlattr *key, size_t key_len)
2690 {
2691 struct ds s;
2692 int i;
2693
2694 if (VLOG_DROP_DBG(rl)) {
2695 return;
2696 }
2697
2698 ds_init(&s);
2699 for (i = 0; i < 64; i++) {
2700 if (attrs & (UINT64_C(1) << i)) {
2701 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2702
2703 ds_put_format(&s, " %s",
2704 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
2705 }
2706 }
2707 if (out_of_range_attr) {
2708 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
2709 }
2710
2711 ds_put_cstr(&s, ": ");
2712 odp_flow_key_format(key, key_len, &s);
2713
2714 VLOG_DBG("%s:%s", title, ds_cstr(&s));
2715 ds_destroy(&s);
2716 }
2717
2718 static bool
2719 odp_to_ovs_frag(uint8_t odp_frag, struct flow *flow)
2720 {
2721 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2722
2723 if (odp_frag > OVS_FRAG_TYPE_LATER) {
2724 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
2725 return false;
2726 }
2727
2728 if (odp_frag != OVS_FRAG_TYPE_NONE) {
2729 flow->nw_frag |= FLOW_NW_FRAG_ANY;
2730 if (odp_frag == OVS_FRAG_TYPE_LATER) {
2731 flow->nw_frag |= FLOW_NW_FRAG_LATER;
2732 }
2733 }
2734 return true;
2735 }
2736
2737 static bool
2738 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
2739 const struct nlattr *attrs[], uint64_t *present_attrsp,
2740 int *out_of_range_attrp)
2741 {
2742 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2743 const struct nlattr *nla;
2744 uint64_t present_attrs;
2745 size_t left;
2746
2747 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
2748 present_attrs = 0;
2749 *out_of_range_attrp = 0;
2750 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
2751 uint16_t type = nl_attr_type(nla);
2752 size_t len = nl_attr_get_size(nla);
2753 int expected_len = odp_flow_key_attr_len(type);
2754
2755 if (len != expected_len && expected_len >= 0) {
2756 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2757
2758 VLOG_ERR_RL(&rl, "attribute %s has length %zu but should have "
2759 "length %d", ovs_key_attr_to_string(type, namebuf,
2760 sizeof namebuf),
2761 len, expected_len);
2762 return false;
2763 }
2764
2765 if (type > OVS_KEY_ATTR_MAX) {
2766 *out_of_range_attrp = type;
2767 } else {
2768 if (present_attrs & (UINT64_C(1) << type)) {
2769 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2770
2771 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
2772 ovs_key_attr_to_string(type,
2773 namebuf, sizeof namebuf));
2774 return false;
2775 }
2776
2777 present_attrs |= UINT64_C(1) << type;
2778 attrs[type] = nla;
2779 }
2780 }
2781 if (left) {
2782 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
2783 return false;
2784 }
2785
2786 *present_attrsp = present_attrs;
2787 return true;
2788 }
2789
2790 static enum odp_key_fitness
2791 check_expectations(uint64_t present_attrs, int out_of_range_attr,
2792 uint64_t expected_attrs,
2793 const struct nlattr *key, size_t key_len)
2794 {
2795 uint64_t missing_attrs;
2796 uint64_t extra_attrs;
2797
2798 missing_attrs = expected_attrs & ~present_attrs;
2799 if (missing_attrs) {
2800 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2801 log_odp_key_attributes(&rl, "expected but not present",
2802 missing_attrs, 0, key, key_len);
2803 return ODP_FIT_TOO_LITTLE;
2804 }
2805
2806 extra_attrs = present_attrs & ~expected_attrs;
2807 if (extra_attrs || out_of_range_attr) {
2808 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
2809 log_odp_key_attributes(&rl, "present but not expected",
2810 extra_attrs, out_of_range_attr, key, key_len);
2811 return ODP_FIT_TOO_MUCH;
2812 }
2813
2814 return ODP_FIT_PERFECT;
2815 }
2816
2817 static bool
2818 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2819 uint64_t present_attrs, uint64_t *expected_attrs,
2820 struct flow *flow, const struct flow *src_flow)
2821 {
2822 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2823 bool is_mask = flow != src_flow;
2824
2825 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
2826 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
2827 if (!is_mask && ntohs(flow->dl_type) < ETH_TYPE_MIN) {
2828 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
2829 ntohs(flow->dl_type));
2830 return false;
2831 }
2832 if (is_mask && ntohs(src_flow->dl_type) < ETH_TYPE_MIN &&
2833 flow->dl_type != htons(0xffff)) {
2834 return false;
2835 }
2836 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
2837 } else {
2838 if (!is_mask) {
2839 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
2840 } else if (ntohs(src_flow->dl_type) < ETH_TYPE_MIN) {
2841 /* See comments in odp_flow_key_from_flow__(). */
2842 VLOG_ERR_RL(&rl, "mask expected for non-Ethernet II frame");
2843 return false;
2844 }
2845 }
2846 return true;
2847 }
2848
2849 static enum odp_key_fitness
2850 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
2851 uint64_t present_attrs, int out_of_range_attr,
2852 uint64_t expected_attrs, struct flow *flow,
2853 const struct nlattr *key, size_t key_len,
2854 const struct flow *src_flow)
2855 {
2856 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2857 bool is_mask = src_flow != flow;
2858 const void *check_start = NULL;
2859 size_t check_len = 0;
2860 enum ovs_key_attr expected_bit = 0xff;
2861
2862 if (eth_type_mpls(src_flow->dl_type)) {
2863 if (!is_mask) {
2864 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2865
2866 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS))) {
2867 return ODP_FIT_TOO_LITTLE;
2868 }
2869 flow->mpls_lse = nl_attr_get_be32(attrs[OVS_KEY_ATTR_MPLS]);
2870 } else if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
2871 flow->mpls_lse = nl_attr_get_be32(attrs[OVS_KEY_ATTR_MPLS]);
2872
2873 if (flow->mpls_lse != 0 && flow->dl_type != htons(0xffff)) {
2874 return ODP_FIT_ERROR;
2875 }
2876 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
2877 }
2878 goto done;
2879 } else if (src_flow->dl_type == htons(ETH_TYPE_IP)) {
2880 if (!is_mask) {
2881 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
2882 }
2883 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
2884 const struct ovs_key_ipv4 *ipv4_key;
2885
2886 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
2887 flow->nw_src = ipv4_key->ipv4_src;
2888 flow->nw_dst = ipv4_key->ipv4_dst;
2889 flow->nw_proto = ipv4_key->ipv4_proto;
2890 flow->nw_tos = ipv4_key->ipv4_tos;
2891 flow->nw_ttl = ipv4_key->ipv4_ttl;
2892 if (is_mask) {
2893 flow->nw_frag = ipv4_key->ipv4_frag;
2894 check_start = ipv4_key;
2895 check_len = sizeof *ipv4_key;
2896 expected_bit = OVS_KEY_ATTR_IPV4;
2897 } else if (!odp_to_ovs_frag(ipv4_key->ipv4_frag, flow)) {
2898 return ODP_FIT_ERROR;
2899 }
2900 }
2901 } else if (src_flow->dl_type == htons(ETH_TYPE_IPV6)) {
2902 if (!is_mask) {
2903 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
2904 }
2905 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
2906 const struct ovs_key_ipv6 *ipv6_key;
2907
2908 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
2909 memcpy(&flow->ipv6_src, ipv6_key->ipv6_src, sizeof flow->ipv6_src);
2910 memcpy(&flow->ipv6_dst, ipv6_key->ipv6_dst, sizeof flow->ipv6_dst);
2911 flow->ipv6_label = ipv6_key->ipv6_label;
2912 flow->nw_proto = ipv6_key->ipv6_proto;
2913 flow->nw_tos = ipv6_key->ipv6_tclass;
2914 flow->nw_ttl = ipv6_key->ipv6_hlimit;
2915 if (is_mask) {
2916 flow->nw_frag = ipv6_key->ipv6_frag;
2917 check_start = ipv6_key;
2918 check_len = sizeof *ipv6_key;
2919 expected_bit = OVS_KEY_ATTR_IPV6;
2920 } else if (!odp_to_ovs_frag(ipv6_key->ipv6_frag, flow)) {
2921 return ODP_FIT_ERROR;
2922 }
2923 }
2924 } else if (src_flow->dl_type == htons(ETH_TYPE_ARP) ||
2925 src_flow->dl_type == htons(ETH_TYPE_RARP)) {
2926 if (!is_mask) {
2927 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
2928 }
2929 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
2930 const struct ovs_key_arp *arp_key;
2931
2932 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
2933 flow->nw_src = arp_key->arp_sip;
2934 flow->nw_dst = arp_key->arp_tip;
2935 if (!is_mask && (arp_key->arp_op & htons(0xff00))) {
2936 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
2937 "key", ntohs(arp_key->arp_op));
2938 return ODP_FIT_ERROR;
2939 }
2940 flow->nw_proto = ntohs(arp_key->arp_op);
2941 memcpy(flow->arp_sha, arp_key->arp_sha, ETH_ADDR_LEN);
2942 memcpy(flow->arp_tha, arp_key->arp_tha, ETH_ADDR_LEN);
2943
2944 if (is_mask) {
2945 check_start = arp_key;
2946 check_len = sizeof *arp_key;
2947 expected_bit = OVS_KEY_ATTR_ARP;
2948 }
2949 }
2950 } else {
2951 goto done;
2952 }
2953 if (is_mask) {
2954 if (!is_all_zeros(check_start, check_len) &&
2955 flow->dl_type != htons(0xffff)) {
2956 return ODP_FIT_ERROR;
2957 } else {
2958 expected_attrs |= UINT64_C(1) << expected_bit;
2959 }
2960 }
2961
2962 expected_bit = OVS_KEY_ATTR_UNSPEC;
2963 if (src_flow->nw_proto == IPPROTO_TCP
2964 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
2965 src_flow->dl_type == htons(ETH_TYPE_IPV6))
2966 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2967 if (!is_mask) {
2968 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
2969 }
2970 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
2971 const struct ovs_key_tcp *tcp_key;
2972
2973 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
2974 flow->tp_src = tcp_key->tcp_src;
2975 flow->tp_dst = tcp_key->tcp_dst;
2976 expected_bit = OVS_KEY_ATTR_TCP;
2977 }
2978 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS)) {
2979 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS;
2980 flow->tcp_flags = nl_attr_get_be16(attrs[OVS_KEY_ATTR_TCP_FLAGS]);
2981 }
2982 } else if (src_flow->nw_proto == IPPROTO_UDP
2983 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
2984 src_flow->dl_type == htons(ETH_TYPE_IPV6))
2985 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
2986 if (!is_mask) {
2987 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
2988 }
2989 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
2990 const struct ovs_key_udp *udp_key;
2991
2992 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
2993 flow->tp_src = udp_key->udp_src;
2994 flow->tp_dst = udp_key->udp_dst;
2995 expected_bit = OVS_KEY_ATTR_UDP;
2996 }
2997 } else if (src_flow->nw_proto == IPPROTO_SCTP
2998 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
2999 src_flow->dl_type == htons(ETH_TYPE_IPV6))
3000 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3001 if (!is_mask) {
3002 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SCTP;
3003 }
3004 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SCTP)) {
3005 const struct ovs_key_sctp *sctp_key;
3006
3007 sctp_key = nl_attr_get(attrs[OVS_KEY_ATTR_SCTP]);
3008 flow->tp_src = sctp_key->sctp_src;
3009 flow->tp_dst = sctp_key->sctp_dst;
3010 expected_bit = OVS_KEY_ATTR_SCTP;
3011 }
3012 } else if (src_flow->nw_proto == IPPROTO_ICMP
3013 && src_flow->dl_type == htons(ETH_TYPE_IP)
3014 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3015 if (!is_mask) {
3016 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
3017 }
3018 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
3019 const struct ovs_key_icmp *icmp_key;
3020
3021 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
3022 flow->tp_src = htons(icmp_key->icmp_type);
3023 flow->tp_dst = htons(icmp_key->icmp_code);
3024 expected_bit = OVS_KEY_ATTR_ICMP;
3025 }
3026 } else if (src_flow->nw_proto == IPPROTO_ICMPV6
3027 && src_flow->dl_type == htons(ETH_TYPE_IPV6)
3028 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
3029 if (!is_mask) {
3030 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
3031 }
3032 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
3033 const struct ovs_key_icmpv6 *icmpv6_key;
3034
3035 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
3036 flow->tp_src = htons(icmpv6_key->icmpv6_type);
3037 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
3038 expected_bit = OVS_KEY_ATTR_ICMPV6;
3039 if (src_flow->tp_dst == htons(0) &&
3040 (src_flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
3041 src_flow->tp_src == htons(ND_NEIGHBOR_ADVERT))) {
3042 if (!is_mask) {
3043 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3044 }
3045 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
3046 const struct ovs_key_nd *nd_key;
3047
3048 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
3049 memcpy(&flow->nd_target, nd_key->nd_target,
3050 sizeof flow->nd_target);
3051 memcpy(flow->arp_sha, nd_key->nd_sll, ETH_ADDR_LEN);
3052 memcpy(flow->arp_tha, nd_key->nd_tll, ETH_ADDR_LEN);
3053 if (is_mask) {
3054 if (!is_all_zeros((const uint8_t *) nd_key,
3055 sizeof *nd_key) &&
3056 (flow->tp_src != htons(0xffff) ||
3057 flow->tp_dst != htons(0xffff))) {
3058 return ODP_FIT_ERROR;
3059 } else {
3060 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
3061 }
3062 }
3063 }
3064 }
3065 }
3066 }
3067 if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
3068 if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
3069 return ODP_FIT_ERROR;
3070 } else {
3071 expected_attrs |= UINT64_C(1) << expected_bit;
3072 }
3073 }
3074
3075 done:
3076 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
3077 key, key_len);
3078 }
3079
3080 /* Parse 802.1Q header then encapsulated L3 attributes. */
3081 static enum odp_key_fitness
3082 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
3083 uint64_t present_attrs, int out_of_range_attr,
3084 uint64_t expected_attrs, struct flow *flow,
3085 const struct nlattr *key, size_t key_len,
3086 const struct flow *src_flow)
3087 {
3088 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
3089 bool is_mask = src_flow != flow;
3090
3091 const struct nlattr *encap
3092 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
3093 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
3094 enum odp_key_fitness encap_fitness;
3095 enum odp_key_fitness fitness;
3096 ovs_be16 tci;
3097
3098 /* Calculate fitness of outer attributes. */
3099 if (!is_mask) {
3100 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
3101 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
3102 } else {
3103 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3104 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3105 }
3106 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)) {
3107 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_ENCAP);
3108 }
3109 }
3110 fitness = check_expectations(present_attrs, out_of_range_attr,
3111 expected_attrs, key, key_len);
3112
3113 /* Get the VLAN TCI value. */
3114 if (!is_mask && !(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
3115 return ODP_FIT_TOO_LITTLE;
3116 } else {
3117 tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
3118 if (!is_mask) {
3119 if (tci == htons(0)) {
3120 /* Corner case for a truncated 802.1Q header. */
3121 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
3122 return ODP_FIT_TOO_MUCH;
3123 }
3124 return fitness;
3125 } else if (!(tci & htons(VLAN_CFI))) {
3126 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
3127 "but CFI bit is not set", ntohs(tci));
3128 return ODP_FIT_ERROR;
3129 }
3130 }
3131 /* Set vlan_tci.
3132 * Remove the TPID from dl_type since it's not the real Ethertype. */
3133 flow->dl_type = htons(0);
3134 flow->vlan_tci = tci;
3135 }
3136
3137 if (is_mask && !(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))) {
3138 return fitness;
3139 }
3140 /* Now parse the encapsulated attributes. */
3141 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
3142 attrs, &present_attrs, &out_of_range_attr)) {
3143 return ODP_FIT_ERROR;
3144 }
3145 expected_attrs = 0;
3146
3147 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow, src_flow)) {
3148 return ODP_FIT_ERROR;
3149 }
3150 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3151 expected_attrs, flow, key, key_len,
3152 src_flow);
3153
3154 /* The overall fitness is the worse of the outer and inner attributes. */
3155 return MAX(fitness, encap_fitness);
3156 }
3157
3158 static enum odp_key_fitness
3159 odp_flow_key_to_flow__(const struct nlattr *key, size_t key_len,
3160 struct flow *flow, const struct flow *src_flow)
3161 {
3162 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
3163 uint64_t expected_attrs;
3164 uint64_t present_attrs;
3165 int out_of_range_attr;
3166 bool is_mask = src_flow != flow;
3167
3168 memset(flow, 0, sizeof *flow);
3169
3170 /* Parse attributes. */
3171 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
3172 &out_of_range_attr)) {
3173 return ODP_FIT_ERROR;
3174 }
3175 expected_attrs = 0;
3176
3177 /* Metadata. */
3178 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
3179 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
3180 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
3181 }
3182
3183 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
3184 flow->pkt_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
3185 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
3186 }
3187
3188 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
3189 enum odp_key_fitness res;
3190
3191 res = odp_tun_key_from_attr(attrs[OVS_KEY_ATTR_TUNNEL], &flow->tunnel);
3192 if (res == ODP_FIT_ERROR) {
3193 return ODP_FIT_ERROR;
3194 } else if (res == ODP_FIT_PERFECT) {
3195 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
3196 }
3197 }
3198
3199 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
3200 flow->in_port.odp_port
3201 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
3202 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
3203 } else if (!is_mask) {
3204 flow->in_port.odp_port = ODPP_NONE;
3205 }
3206
3207 /* Ethernet header. */
3208 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
3209 const struct ovs_key_ethernet *eth_key;
3210
3211 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
3212 memcpy(flow->dl_src, eth_key->eth_src, ETH_ADDR_LEN);
3213 memcpy(flow->dl_dst, eth_key->eth_dst, ETH_ADDR_LEN);
3214 if (is_mask) {
3215 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3216 }
3217 }
3218 if (!is_mask) {
3219 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
3220 }
3221
3222 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
3223 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow,
3224 src_flow)) {
3225 return ODP_FIT_ERROR;
3226 }
3227
3228 if ((is_mask && (src_flow->vlan_tci & htons(VLAN_CFI))) ||
3229 (!is_mask && src_flow->dl_type == htons(ETH_TYPE_VLAN))) {
3230 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
3231 expected_attrs, flow, key, key_len, src_flow);
3232 }
3233 if (is_mask) {
3234 flow->vlan_tci = htons(0xffff);
3235 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
3236 flow->vlan_tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
3237 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
3238 }
3239 }
3240 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
3241 expected_attrs, flow, key, key_len, src_flow);
3242 }
3243
3244 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
3245 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
3246 * 'key' fits our expectations for what a flow key should contain.
3247 *
3248 * The 'in_port' will be the datapath's understanding of the port. The
3249 * caller will need to translate with odp_port_to_ofp_port() if the
3250 * OpenFlow port is needed.
3251 *
3252 * This function doesn't take the packet itself as an argument because none of
3253 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
3254 * it is always possible to infer which additional attribute(s) should appear
3255 * by looking at the attributes for lower-level protocols, e.g. if the network
3256 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
3257 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
3258 * must be absent. */
3259 enum odp_key_fitness
3260 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
3261 struct flow *flow)
3262 {
3263 return odp_flow_key_to_flow__(key, key_len, flow, flow);
3264 }
3265
3266 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a mask
3267 * structure in 'mask'. 'flow' must be a previously translated flow
3268 * corresponding to 'mask'. Returns an ODP_FIT_* value that indicates how well
3269 * 'key' fits our expectations for what a flow key should contain. */
3270 enum odp_key_fitness
3271 odp_flow_key_to_mask(const struct nlattr *key, size_t key_len,
3272 struct flow *mask, const struct flow *flow)
3273 {
3274 return odp_flow_key_to_flow__(key, key_len, mask, flow);
3275 }
3276
3277 /* Returns 'fitness' as a string, for use in debug messages. */
3278 const char *
3279 odp_key_fitness_to_string(enum odp_key_fitness fitness)
3280 {
3281 switch (fitness) {
3282 case ODP_FIT_PERFECT:
3283 return "OK";
3284 case ODP_FIT_TOO_MUCH:
3285 return "too_much";
3286 case ODP_FIT_TOO_LITTLE:
3287 return "too_little";
3288 case ODP_FIT_ERROR:
3289 return "error";
3290 default:
3291 return "<unknown>";
3292 }
3293 }
3294
3295 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
3296 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
3297 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
3298 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
3299 * null, then the return value is not meaningful.) */
3300 size_t
3301 odp_put_userspace_action(uint32_t pid,
3302 const void *userdata, size_t userdata_size,
3303 struct ofpbuf *odp_actions)
3304 {
3305 size_t userdata_ofs;
3306 size_t offset;
3307
3308 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
3309 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
3310 if (userdata) {
3311 userdata_ofs = odp_actions->size + NLA_HDRLEN;
3312
3313 /* The OVS kernel module before OVS 1.11 and the upstream Linux kernel
3314 * module before Linux 3.10 required the userdata to be exactly 8 bytes
3315 * long:
3316 *
3317 * - The kernel rejected shorter userdata with -ERANGE.
3318 *
3319 * - The kernel silently dropped userdata beyond the first 8 bytes.
3320 *
3321 * Thus, for maximum compatibility, always put at least 8 bytes. (We
3322 * separately disable features that required more than 8 bytes.) */
3323 memcpy(nl_msg_put_unspec_zero(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
3324 MAX(8, userdata_size)),
3325 userdata, userdata_size);
3326 } else {
3327 userdata_ofs = 0;
3328 }
3329 nl_msg_end_nested(odp_actions, offset);
3330
3331 return userdata_ofs;
3332 }
3333
3334 void
3335 odp_put_tunnel_action(const struct flow_tnl *tunnel,
3336 struct ofpbuf *odp_actions)
3337 {
3338 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3339 tun_key_to_attr(odp_actions, tunnel);
3340 nl_msg_end_nested(odp_actions, offset);
3341 }
3342 \f
3343 /* The commit_odp_actions() function and its helpers. */
3344
3345 static void
3346 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
3347 const void *key, size_t key_size)
3348 {
3349 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
3350 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
3351 nl_msg_end_nested(odp_actions, offset);
3352 }
3353
3354 void
3355 odp_put_pkt_mark_action(const uint32_t pkt_mark,
3356 struct ofpbuf *odp_actions)
3357 {
3358 commit_set_action(odp_actions, OVS_KEY_ATTR_SKB_MARK, &pkt_mark,
3359 sizeof(pkt_mark));
3360 }
3361
3362 /* If any of the flow key data that ODP actions can modify are different in
3363 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
3364 * 'odp_actions' that change the flow tunneling information in key from
3365 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
3366 * same way. In other words, operates the same as commit_odp_actions(), but
3367 * only on tunneling information. */
3368 void
3369 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
3370 struct ofpbuf *odp_actions)
3371 {
3372 /* A valid IPV4_TUNNEL must have non-zero ip_dst. */
3373 if (flow->tunnel.ip_dst) {
3374 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
3375 return;
3376 }
3377 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
3378 odp_put_tunnel_action(&base->tunnel, odp_actions);
3379 }
3380 }
3381
3382 static void
3383 commit_set_ether_addr_action(const struct flow *flow, struct flow *base,
3384 struct ofpbuf *odp_actions,
3385 struct flow_wildcards *wc)
3386 {
3387 struct ovs_key_ethernet eth_key;
3388
3389 if (eth_addr_equals(base->dl_src, flow->dl_src) &&
3390 eth_addr_equals(base->dl_dst, flow->dl_dst)) {
3391 return;
3392 }
3393
3394 memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
3395 memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
3396
3397 memcpy(base->dl_src, flow->dl_src, ETH_ADDR_LEN);
3398 memcpy(base->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
3399
3400 memcpy(eth_key.eth_src, base->dl_src, ETH_ADDR_LEN);
3401 memcpy(eth_key.eth_dst, base->dl_dst, ETH_ADDR_LEN);
3402
3403 commit_set_action(odp_actions, OVS_KEY_ATTR_ETHERNET,
3404 &eth_key, sizeof(eth_key));
3405 }
3406
3407 static void
3408 commit_vlan_action(ovs_be16 vlan_tci, struct flow *base,
3409 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3410 {
3411 if (base->vlan_tci == vlan_tci) {
3412 return;
3413 }
3414
3415 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
3416
3417 if (base->vlan_tci & htons(VLAN_CFI)) {
3418 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
3419 }
3420
3421 if (vlan_tci & htons(VLAN_CFI)) {
3422 struct ovs_action_push_vlan vlan;
3423
3424 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
3425 vlan.vlan_tci = vlan_tci;
3426 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
3427 &vlan, sizeof vlan);
3428 }
3429 base->vlan_tci = vlan_tci;
3430 }
3431
3432 static void
3433 commit_mpls_action(const struct flow *flow, struct flow *base,
3434 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
3435 int *mpls_depth_delta)
3436 {
3437 if (flow->mpls_lse == base->mpls_lse && !*mpls_depth_delta) {
3438 return;
3439 }
3440
3441 memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse);
3442
3443 switch (*mpls_depth_delta) {
3444 case -1:
3445 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, flow->dl_type);
3446 break;
3447 case 1: {
3448 struct ovs_action_push_mpls *mpls;
3449
3450 mpls = nl_msg_put_unspec_zero(odp_actions, OVS_ACTION_ATTR_PUSH_MPLS,
3451 sizeof *mpls);
3452 mpls->mpls_ethertype = flow->dl_type;
3453 mpls->mpls_lse = flow->mpls_lse;
3454 break;
3455 }
3456 case 0: {
3457 struct ovs_key_mpls mpls_key;
3458
3459 mpls_key.mpls_lse = flow->mpls_lse;
3460 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
3461 &mpls_key, sizeof(mpls_key));
3462 break;
3463 }
3464 default:
3465 NOT_REACHED();
3466 }
3467
3468 base->dl_type = flow->dl_type;
3469 base->mpls_lse = flow->mpls_lse;
3470 *mpls_depth_delta = 0;
3471 }
3472
3473 static void
3474 commit_set_ipv4_action(const struct flow *flow, struct flow *base,
3475 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3476 {
3477 struct ovs_key_ipv4 ipv4_key;
3478
3479 if (base->nw_src == flow->nw_src &&
3480 base->nw_dst == flow->nw_dst &&
3481 base->nw_tos == flow->nw_tos &&
3482 base->nw_ttl == flow->nw_ttl &&
3483 base->nw_frag == flow->nw_frag) {
3484 return;
3485 }
3486
3487 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3488 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3489 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3490 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3491 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3492 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3493
3494 ipv4_key.ipv4_src = base->nw_src = flow->nw_src;
3495 ipv4_key.ipv4_dst = base->nw_dst = flow->nw_dst;
3496 ipv4_key.ipv4_tos = base->nw_tos = flow->nw_tos;
3497 ipv4_key.ipv4_ttl = base->nw_ttl = flow->nw_ttl;
3498 ipv4_key.ipv4_proto = base->nw_proto;
3499 ipv4_key.ipv4_frag = ovs_to_odp_frag(base->nw_frag);
3500
3501 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV4,
3502 &ipv4_key, sizeof(ipv4_key));
3503 }
3504
3505 static void
3506 commit_set_ipv6_action(const struct flow *flow, struct flow *base,
3507 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3508 {
3509 struct ovs_key_ipv6 ipv6_key;
3510
3511 if (ipv6_addr_equals(&base->ipv6_src, &flow->ipv6_src) &&
3512 ipv6_addr_equals(&base->ipv6_dst, &flow->ipv6_dst) &&
3513 base->ipv6_label == flow->ipv6_label &&
3514 base->nw_tos == flow->nw_tos &&
3515 base->nw_ttl == flow->nw_ttl &&
3516 base->nw_frag == flow->nw_frag) {
3517 return;
3518 }
3519
3520 memset(&wc->masks.ipv6_src, 0xff, sizeof wc->masks.ipv6_src);
3521 memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst);
3522 memset(&wc->masks.ipv6_label, 0xff, sizeof wc->masks.ipv6_label);
3523 memset(&wc->masks.nw_tos, 0xff, sizeof wc->masks.nw_tos);
3524 memset(&wc->masks.nw_ttl, 0xff, sizeof wc->masks.nw_ttl);
3525 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3526 memset(&wc->masks.nw_frag, 0xff, sizeof wc->masks.nw_frag);
3527
3528 base->ipv6_src = flow->ipv6_src;
3529 memcpy(&ipv6_key.ipv6_src, &base->ipv6_src, sizeof(ipv6_key.ipv6_src));
3530 base->ipv6_dst = flow->ipv6_dst;
3531 memcpy(&ipv6_key.ipv6_dst, &base->ipv6_dst, sizeof(ipv6_key.ipv6_dst));
3532
3533 ipv6_key.ipv6_label = base->ipv6_label = flow->ipv6_label;
3534 ipv6_key.ipv6_tclass = base->nw_tos = flow->nw_tos;
3535 ipv6_key.ipv6_hlimit = base->nw_ttl = flow->nw_ttl;
3536 ipv6_key.ipv6_proto = base->nw_proto;
3537 ipv6_key.ipv6_frag = ovs_to_odp_frag(base->nw_frag);
3538
3539 commit_set_action(odp_actions, OVS_KEY_ATTR_IPV6,
3540 &ipv6_key, sizeof(ipv6_key));
3541 }
3542
3543 static enum slow_path_reason
3544 commit_set_arp_action(const struct flow *flow, struct flow *base,
3545 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3546 {
3547 struct ovs_key_arp arp_key;
3548
3549 if (base->nw_src == flow->nw_src &&
3550 base->nw_dst == flow->nw_dst &&
3551 base->nw_proto == flow->nw_proto &&
3552 eth_addr_equals(base->arp_sha, flow->arp_sha) &&
3553 eth_addr_equals(base->arp_tha, flow->arp_tha)) {
3554 return 0;
3555 }
3556
3557 memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
3558 memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
3559 memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
3560 memset(&wc->masks.arp_sha, 0xff, sizeof wc->masks.arp_sha);
3561 memset(&wc->masks.arp_tha, 0xff, sizeof wc->masks.arp_tha);
3562
3563 base->nw_src = flow->nw_src;
3564 base->nw_dst = flow->nw_dst;
3565 base->nw_proto = flow->nw_proto;
3566 memcpy(base->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3567 memcpy(base->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3568
3569 arp_key.arp_sip = base->nw_src;
3570 arp_key.arp_tip = base->nw_dst;
3571 arp_key.arp_op = htons(base->nw_proto);
3572 memcpy(arp_key.arp_sha, flow->arp_sha, ETH_ADDR_LEN);
3573 memcpy(arp_key.arp_tha, flow->arp_tha, ETH_ADDR_LEN);
3574
3575 commit_set_action(odp_actions, OVS_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
3576
3577 return SLOW_ACTION;
3578 }
3579
3580 static enum slow_path_reason
3581 commit_set_nw_action(const struct flow *flow, struct flow *base,
3582 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3583 {
3584 /* Check if 'flow' really has an L3 header. */
3585 if (!flow->nw_proto) {
3586 return 0;
3587 }
3588
3589 switch (ntohs(base->dl_type)) {
3590 case ETH_TYPE_IP:
3591 commit_set_ipv4_action(flow, base, odp_actions, wc);
3592 break;
3593
3594 case ETH_TYPE_IPV6:
3595 commit_set_ipv6_action(flow, base, odp_actions, wc);
3596 break;
3597
3598 case ETH_TYPE_ARP:
3599 return commit_set_arp_action(flow, base, odp_actions, wc);
3600 }
3601
3602 return 0;
3603 }
3604
3605 static void
3606 commit_set_port_action(const struct flow *flow, struct flow *base,
3607 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
3608 {
3609 if (!is_ip_any(base) || (!base->tp_src && !base->tp_dst)) {
3610 return;
3611 }
3612
3613 if (base->tp_src == flow->tp_src &&
3614 base->tp_dst == flow->tp_dst) {
3615 return;
3616 }
3617
3618 memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
3619 memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
3620
3621 if (flow->nw_proto == IPPROTO_TCP) {
3622 struct ovs_key_tcp port_key;
3623
3624 port_key.tcp_src = base->tp_src = flow->tp_src;
3625 port_key.tcp_dst = base->tp_dst = flow->tp_dst;
3626
3627 commit_set_action(odp_actions, OVS_KEY_ATTR_TCP,
3628 &port_key, sizeof(port_key));
3629
3630 } else if (flow->nw_proto == IPPROTO_UDP) {
3631 struct ovs_key_udp port_key;
3632
3633 port_key.udp_src = base->tp_src = flow->tp_src;
3634 port_key.udp_dst = base->tp_dst = flow->tp_dst;
3635
3636 commit_set_action(odp_actions, OVS_KEY_ATTR_UDP,
3637 &port_key, sizeof(port_key));
3638 } else if (flow->nw_proto == IPPROTO_SCTP) {
3639 struct ovs_key_sctp port_key;
3640
3641 port_key.sctp_src = base->tp_src = flow->tp_src;
3642 port_key.sctp_dst = base->tp_dst = flow->tp_dst;
3643
3644 commit_set_action(odp_actions, OVS_KEY_ATTR_SCTP,
3645 &port_key, sizeof(port_key));
3646 }
3647 }
3648
3649 static void
3650 commit_set_priority_action(const struct flow *flow, struct flow *base,
3651 struct ofpbuf *odp_actions,
3652 struct flow_wildcards *wc)
3653 {
3654 if (base->skb_priority == flow->skb_priority) {
3655 return;
3656 }
3657
3658 memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
3659 base->skb_priority = flow->skb_priority;
3660
3661 commit_set_action(odp_actions, OVS_KEY_ATTR_PRIORITY,
3662 &base->skb_priority, sizeof(base->skb_priority));
3663 }
3664
3665 static void
3666 commit_set_pkt_mark_action(const struct flow *flow, struct flow *base,
3667 struct ofpbuf *odp_actions,
3668 struct flow_wildcards *wc)
3669 {
3670 if (base->pkt_mark == flow->pkt_mark) {
3671 return;
3672 }
3673
3674 memset(&wc->masks.pkt_mark, 0xff, sizeof wc->masks.pkt_mark);
3675 base->pkt_mark = flow->pkt_mark;
3676
3677 odp_put_pkt_mark_action(base->pkt_mark, odp_actions);
3678 }
3679
3680 /* If any of the flow key data that ODP actions can modify are different in
3681 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
3682 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
3683 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
3684 * in addition to this function if needed. Sets fields in 'wc' that are
3685 * used as part of the action.
3686 *
3687 * Returns a reason to force processing the flow's packets into the userspace
3688 * slow path, if there is one, otherwise 0. */
3689 enum slow_path_reason
3690 commit_odp_actions(const struct flow *flow, struct flow *base,
3691 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
3692 int *mpls_depth_delta)
3693 {
3694 enum slow_path_reason slow;
3695
3696 commit_set_ether_addr_action(flow, base, odp_actions, wc);
3697 commit_vlan_action(flow->vlan_tci, base, odp_actions, wc);
3698 slow = commit_set_nw_action(flow, base, odp_actions, wc);
3699 commit_set_port_action(flow, base, odp_actions, wc);
3700 /* Committing MPLS actions should occur after committing nw and port
3701 * actions. This is because committing MPLS actions may alter a packet so
3702 * that it is no longer IP and thus nw and port actions are no longer valid.
3703 */
3704 commit_mpls_action(flow, base, odp_actions, wc, mpls_depth_delta);
3705 commit_set_priority_action(flow, base, odp_actions, wc);
3706 commit_set_pkt_mark_action(flow, base, odp_actions, wc);
3707
3708 return slow;
3709 }
openvswitch packages for PVE