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1 /*
2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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 <netinet/ip6.h>
26 #include <stdlib.h>
27 #include <string.h>
28
29 #include "byte-order.h"
30 #include "coverage.h"
31 #include "dpif.h"
32 #include "openvswitch/dynamic-string.h"
33 #include "flow.h"
34 #include "netlink.h"
35 #include "openvswitch/ofpbuf.h"
36 #include "packets.h"
37 #include "simap.h"
38 #include "timeval.h"
39 #include "tun-metadata.h"
40 #include "unaligned.h"
41 #include "util.h"
42 #include "uuid.h"
43 #include "openvswitch/vlog.h"
44
45 VLOG_DEFINE_THIS_MODULE(odp_util);
46
47 /* The interface between userspace and kernel uses an "OVS_*" prefix.
48 * Since this is fairly non-specific for the OVS userspace components,
49 * "ODP_*" (Open vSwitch Datapath) is used as the prefix for
50 * interactions with the datapath.
51 */
52
53 /* The set of characters that may separate one action or one key attribute
54 * from another. */
55 static const char *delimiters = ", \t\r\n";
56 static const char *delimiters_end = ", \t\r\n)";
57
58 struct attr_len_tbl {
59 int len;
60 const struct attr_len_tbl *next;
61 int next_max;
62 };
63 #define ATTR_LEN_INVALID -1
64 #define ATTR_LEN_VARIABLE -2
65 #define ATTR_LEN_NESTED -3
66
67 static int parse_odp_key_mask_attr(const char *, const struct simap *port_names,
68 struct ofpbuf *, struct ofpbuf *);
69 static void format_odp_key_attr(const struct nlattr *a,
70 const struct nlattr *ma,
71 const struct hmap *portno_names, struct ds *ds,
72 bool verbose);
73
74 struct geneve_scan {
75 struct geneve_opt d[63];
76 int len;
77 };
78
79 static int scan_geneve(const char *s, struct geneve_scan *key,
80 struct geneve_scan *mask);
81 static void format_geneve_opts(const struct geneve_opt *opt,
82 const struct geneve_opt *mask, int opts_len,
83 struct ds *, bool verbose);
84
85 static struct nlattr *generate_all_wildcard_mask(const struct attr_len_tbl tbl[],
86 int max, struct ofpbuf *,
87 const struct nlattr *key);
88 static void format_u128(struct ds *ds, const ovs_u128 *value,
89 const ovs_u128 *mask, bool verbose);
90 static int scan_u128(const char *s, ovs_u128 *value, ovs_u128 *mask);
91
92 /* Returns one the following for the action with the given OVS_ACTION_ATTR_*
93 * 'type':
94 *
95 * - For an action whose argument has a fixed length, returned that
96 * nonnegative length in bytes.
97 *
98 * - For an action with a variable-length argument, returns ATTR_LEN_VARIABLE.
99 *
100 * - For an invalid 'type', returns ATTR_LEN_INVALID. */
101 static int
102 odp_action_len(uint16_t type)
103 {
104 if (type > OVS_ACTION_ATTR_MAX) {
105 return -1;
106 }
107
108 switch ((enum ovs_action_attr) type) {
109 case OVS_ACTION_ATTR_OUTPUT: return sizeof(uint32_t);
110 case OVS_ACTION_ATTR_TRUNC: return sizeof(struct ovs_action_trunc);
111 case OVS_ACTION_ATTR_TUNNEL_PUSH: return ATTR_LEN_VARIABLE;
112 case OVS_ACTION_ATTR_TUNNEL_POP: return sizeof(uint32_t);
113 case OVS_ACTION_ATTR_USERSPACE: return ATTR_LEN_VARIABLE;
114 case OVS_ACTION_ATTR_PUSH_VLAN: return sizeof(struct ovs_action_push_vlan);
115 case OVS_ACTION_ATTR_POP_VLAN: return 0;
116 case OVS_ACTION_ATTR_PUSH_MPLS: return sizeof(struct ovs_action_push_mpls);
117 case OVS_ACTION_ATTR_POP_MPLS: return sizeof(ovs_be16);
118 case OVS_ACTION_ATTR_RECIRC: return sizeof(uint32_t);
119 case OVS_ACTION_ATTR_HASH: return sizeof(struct ovs_action_hash);
120 case OVS_ACTION_ATTR_SET: return ATTR_LEN_VARIABLE;
121 case OVS_ACTION_ATTR_SET_MASKED: return ATTR_LEN_VARIABLE;
122 case OVS_ACTION_ATTR_SAMPLE: return ATTR_LEN_VARIABLE;
123 case OVS_ACTION_ATTR_CT: return ATTR_LEN_VARIABLE;
124
125 case OVS_ACTION_ATTR_UNSPEC:
126 case __OVS_ACTION_ATTR_MAX:
127 return ATTR_LEN_INVALID;
128 }
129
130 return ATTR_LEN_INVALID;
131 }
132
133 /* Returns a string form of 'attr'. The return value is either a statically
134 * allocated constant string or the 'bufsize'-byte buffer 'namebuf'. 'bufsize'
135 * should be at least OVS_KEY_ATTR_BUFSIZE. */
136 enum { OVS_KEY_ATTR_BUFSIZE = 3 + INT_STRLEN(unsigned int) + 1 };
137 static const char *
138 ovs_key_attr_to_string(enum ovs_key_attr attr, char *namebuf, size_t bufsize)
139 {
140 switch (attr) {
141 case OVS_KEY_ATTR_UNSPEC: return "unspec";
142 case OVS_KEY_ATTR_ENCAP: return "encap";
143 case OVS_KEY_ATTR_PRIORITY: return "skb_priority";
144 case OVS_KEY_ATTR_SKB_MARK: return "skb_mark";
145 case OVS_KEY_ATTR_CT_STATE: return "ct_state";
146 case OVS_KEY_ATTR_CT_ZONE: return "ct_zone";
147 case OVS_KEY_ATTR_CT_MARK: return "ct_mark";
148 case OVS_KEY_ATTR_CT_LABELS: return "ct_label";
149 case OVS_KEY_ATTR_TUNNEL: return "tunnel";
150 case OVS_KEY_ATTR_IN_PORT: return "in_port";
151 case OVS_KEY_ATTR_ETHERNET: return "eth";
152 case OVS_KEY_ATTR_VLAN: return "vlan";
153 case OVS_KEY_ATTR_ETHERTYPE: return "eth_type";
154 case OVS_KEY_ATTR_IPV4: return "ipv4";
155 case OVS_KEY_ATTR_IPV6: return "ipv6";
156 case OVS_KEY_ATTR_TCP: return "tcp";
157 case OVS_KEY_ATTR_TCP_FLAGS: return "tcp_flags";
158 case OVS_KEY_ATTR_UDP: return "udp";
159 case OVS_KEY_ATTR_SCTP: return "sctp";
160 case OVS_KEY_ATTR_ICMP: return "icmp";
161 case OVS_KEY_ATTR_ICMPV6: return "icmpv6";
162 case OVS_KEY_ATTR_ARP: return "arp";
163 case OVS_KEY_ATTR_ND: return "nd";
164 case OVS_KEY_ATTR_MPLS: return "mpls";
165 case OVS_KEY_ATTR_DP_HASH: return "dp_hash";
166 case OVS_KEY_ATTR_RECIRC_ID: return "recirc_id";
167
168 case __OVS_KEY_ATTR_MAX:
169 default:
170 snprintf(namebuf, bufsize, "key%u", (unsigned int) attr);
171 return namebuf;
172 }
173 }
174
175 static void
176 format_generic_odp_action(struct ds *ds, const struct nlattr *a)
177 {
178 size_t len = nl_attr_get_size(a);
179
180 ds_put_format(ds, "action%"PRId16, nl_attr_type(a));
181 if (len) {
182 const uint8_t *unspec;
183 unsigned int i;
184
185 unspec = nl_attr_get(a);
186 for (i = 0; i < len; i++) {
187 ds_put_char(ds, i ? ' ': '(');
188 ds_put_format(ds, "%02x", unspec[i]);
189 }
190 ds_put_char(ds, ')');
191 }
192 }
193
194 static void
195 format_odp_sample_action(struct ds *ds, const struct nlattr *attr)
196 {
197 static const struct nl_policy ovs_sample_policy[] = {
198 [OVS_SAMPLE_ATTR_PROBABILITY] = { .type = NL_A_U32 },
199 [OVS_SAMPLE_ATTR_ACTIONS] = { .type = NL_A_NESTED }
200 };
201 struct nlattr *a[ARRAY_SIZE(ovs_sample_policy)];
202 double percentage;
203 const struct nlattr *nla_acts;
204 int len;
205
206 ds_put_cstr(ds, "sample");
207
208 if (!nl_parse_nested(attr, ovs_sample_policy, a, ARRAY_SIZE(a))) {
209 ds_put_cstr(ds, "(error)");
210 return;
211 }
212
213 percentage = (100.0 * nl_attr_get_u32(a[OVS_SAMPLE_ATTR_PROBABILITY])) /
214 UINT32_MAX;
215
216 ds_put_format(ds, "(sample=%.1f%%,", percentage);
217
218 ds_put_cstr(ds, "actions(");
219 nla_acts = nl_attr_get(a[OVS_SAMPLE_ATTR_ACTIONS]);
220 len = nl_attr_get_size(a[OVS_SAMPLE_ATTR_ACTIONS]);
221 format_odp_actions(ds, nla_acts, len);
222 ds_put_format(ds, "))");
223 }
224
225 static const char *
226 slow_path_reason_to_string(uint32_t reason)
227 {
228 switch ((enum slow_path_reason) reason) {
229 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return STRING;
230 SLOW_PATH_REASONS
231 #undef SPR
232 }
233
234 return NULL;
235 }
236
237 const char *
238 slow_path_reason_to_explanation(enum slow_path_reason reason)
239 {
240 switch (reason) {
241 #define SPR(ENUM, STRING, EXPLANATION) case ENUM: return EXPLANATION;
242 SLOW_PATH_REASONS
243 #undef SPR
244 }
245
246 return "<unknown>";
247 }
248
249 static int
250 parse_odp_flags(const char *s, const char *(*bit_to_string)(uint32_t),
251 uint32_t *res_flags, uint32_t allowed, uint32_t *res_mask)
252 {
253 return parse_flags(s, bit_to_string, ')', NULL, NULL,
254 res_flags, allowed, res_mask);
255 }
256
257 static void
258 format_odp_userspace_action(struct ds *ds, const struct nlattr *attr)
259 {
260 static const struct nl_policy ovs_userspace_policy[] = {
261 [OVS_USERSPACE_ATTR_PID] = { .type = NL_A_U32 },
262 [OVS_USERSPACE_ATTR_USERDATA] = { .type = NL_A_UNSPEC,
263 .optional = true },
264 [OVS_USERSPACE_ATTR_EGRESS_TUN_PORT] = { .type = NL_A_U32,
265 .optional = true },
266 [OVS_USERSPACE_ATTR_ACTIONS] = { .type = NL_A_UNSPEC,
267 .optional = true },
268 };
269 struct nlattr *a[ARRAY_SIZE(ovs_userspace_policy)];
270 const struct nlattr *userdata_attr;
271 const struct nlattr *tunnel_out_port_attr;
272
273 if (!nl_parse_nested(attr, ovs_userspace_policy, a, ARRAY_SIZE(a))) {
274 ds_put_cstr(ds, "userspace(error)");
275 return;
276 }
277
278 ds_put_format(ds, "userspace(pid=%"PRIu32,
279 nl_attr_get_u32(a[OVS_USERSPACE_ATTR_PID]));
280
281 userdata_attr = a[OVS_USERSPACE_ATTR_USERDATA];
282
283 if (userdata_attr) {
284 const uint8_t *userdata = nl_attr_get(userdata_attr);
285 size_t userdata_len = nl_attr_get_size(userdata_attr);
286 bool userdata_unspec = true;
287 union user_action_cookie cookie;
288
289 if (userdata_len >= sizeof cookie.type
290 && userdata_len <= sizeof cookie) {
291
292 memset(&cookie, 0, sizeof cookie);
293 memcpy(&cookie, userdata, userdata_len);
294
295 userdata_unspec = false;
296
297 if (userdata_len == sizeof cookie.sflow
298 && cookie.type == USER_ACTION_COOKIE_SFLOW) {
299 ds_put_format(ds, ",sFlow("
300 "vid=%"PRIu16",pcp=%"PRIu8",output=%"PRIu32")",
301 vlan_tci_to_vid(cookie.sflow.vlan_tci),
302 vlan_tci_to_pcp(cookie.sflow.vlan_tci),
303 cookie.sflow.output);
304 } else if (userdata_len == sizeof cookie.slow_path
305 && cookie.type == USER_ACTION_COOKIE_SLOW_PATH) {
306 ds_put_cstr(ds, ",slow_path(");
307 format_flags(ds, slow_path_reason_to_string,
308 cookie.slow_path.reason, ',');
309 ds_put_format(ds, ")");
310 } else if (userdata_len == sizeof cookie.flow_sample
311 && cookie.type == USER_ACTION_COOKIE_FLOW_SAMPLE) {
312 ds_put_format(ds, ",flow_sample(probability=%"PRIu16
313 ",collector_set_id=%"PRIu32
314 ",obs_domain_id=%"PRIu32
315 ",obs_point_id=%"PRIu32
316 ",output_port=%"PRIu32")",
317 cookie.flow_sample.probability,
318 cookie.flow_sample.collector_set_id,
319 cookie.flow_sample.obs_domain_id,
320 cookie.flow_sample.obs_point_id,
321 cookie.flow_sample.output_odp_port);
322 } else if (userdata_len >= sizeof cookie.ipfix
323 && cookie.type == USER_ACTION_COOKIE_IPFIX) {
324 ds_put_format(ds, ",ipfix(output_port=%"PRIu32")",
325 cookie.ipfix.output_odp_port);
326 } else {
327 userdata_unspec = true;
328 }
329 }
330
331 if (userdata_unspec) {
332 size_t i;
333 ds_put_format(ds, ",userdata(");
334 for (i = 0; i < userdata_len; i++) {
335 ds_put_format(ds, "%02x", userdata[i]);
336 }
337 ds_put_char(ds, ')');
338 }
339 }
340
341 if (a[OVS_USERSPACE_ATTR_ACTIONS]) {
342 ds_put_cstr(ds, ",actions");
343 }
344
345 tunnel_out_port_attr = a[OVS_USERSPACE_ATTR_EGRESS_TUN_PORT];
346 if (tunnel_out_port_attr) {
347 ds_put_format(ds, ",tunnel_out_port=%"PRIu32,
348 nl_attr_get_u32(tunnel_out_port_attr));
349 }
350
351 ds_put_char(ds, ')');
352 }
353
354 static void
355 format_vlan_tci(struct ds *ds, ovs_be16 tci, ovs_be16 mask, bool verbose)
356 {
357 if (verbose || vlan_tci_to_vid(tci) || vlan_tci_to_vid(mask)) {
358 ds_put_format(ds, "vid=%"PRIu16, vlan_tci_to_vid(tci));
359 if (vlan_tci_to_vid(mask) != VLAN_VID_MASK) { /* Partially masked. */
360 ds_put_format(ds, "/0x%"PRIx16, vlan_tci_to_vid(mask));
361 };
362 ds_put_char(ds, ',');
363 }
364 if (verbose || vlan_tci_to_pcp(tci) || vlan_tci_to_pcp(mask)) {
365 ds_put_format(ds, "pcp=%d", vlan_tci_to_pcp(tci));
366 if (vlan_tci_to_pcp(mask) != (VLAN_PCP_MASK >> VLAN_PCP_SHIFT)) {
367 ds_put_format(ds, "/0x%x", vlan_tci_to_pcp(mask));
368 }
369 ds_put_char(ds, ',');
370 }
371 if (!(tci & htons(VLAN_CFI))) {
372 ds_put_cstr(ds, "cfi=0");
373 ds_put_char(ds, ',');
374 }
375 ds_chomp(ds, ',');
376 }
377
378 static void
379 format_mpls_lse(struct ds *ds, ovs_be32 mpls_lse)
380 {
381 ds_put_format(ds, "label=%"PRIu32",tc=%d,ttl=%d,bos=%d",
382 mpls_lse_to_label(mpls_lse),
383 mpls_lse_to_tc(mpls_lse),
384 mpls_lse_to_ttl(mpls_lse),
385 mpls_lse_to_bos(mpls_lse));
386 }
387
388 static void
389 format_mpls(struct ds *ds, const struct ovs_key_mpls *mpls_key,
390 const struct ovs_key_mpls *mpls_mask, int n)
391 {
392 for (int i = 0; i < n; i++) {
393 ovs_be32 key = mpls_key[i].mpls_lse;
394
395 if (mpls_mask == NULL) {
396 format_mpls_lse(ds, key);
397 } else {
398 ovs_be32 mask = mpls_mask[i].mpls_lse;
399
400 ds_put_format(ds, "label=%"PRIu32"/0x%x,tc=%d/%x,ttl=%d/0x%x,bos=%d/%x",
401 mpls_lse_to_label(key), mpls_lse_to_label(mask),
402 mpls_lse_to_tc(key), mpls_lse_to_tc(mask),
403 mpls_lse_to_ttl(key), mpls_lse_to_ttl(mask),
404 mpls_lse_to_bos(key), mpls_lse_to_bos(mask));
405 }
406 ds_put_char(ds, ',');
407 }
408 ds_chomp(ds, ',');
409 }
410
411 static void
412 format_odp_recirc_action(struct ds *ds, uint32_t recirc_id)
413 {
414 ds_put_format(ds, "recirc(%#"PRIx32")", recirc_id);
415 }
416
417 static void
418 format_odp_hash_action(struct ds *ds, const struct ovs_action_hash *hash_act)
419 {
420 ds_put_format(ds, "hash(");
421
422 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
423 ds_put_format(ds, "hash_l4(%"PRIu32")", hash_act->hash_basis);
424 } else {
425 ds_put_format(ds, "Unknown hash algorithm(%"PRIu32")",
426 hash_act->hash_alg);
427 }
428 ds_put_format(ds, ")");
429 }
430
431 static const void *
432 format_udp_tnl_push_header(struct ds *ds, const struct udp_header *udp)
433 {
434 ds_put_format(ds, "udp(src=%"PRIu16",dst=%"PRIu16",csum=0x%"PRIx16"),",
435 ntohs(udp->udp_src), ntohs(udp->udp_dst),
436 ntohs(udp->udp_csum));
437
438 return udp + 1;
439 }
440
441 static void
442 format_odp_tnl_push_header(struct ds *ds, struct ovs_action_push_tnl *data)
443 {
444 const struct eth_header *eth;
445 const void *l3;
446 const void *l4;
447 const struct udp_header *udp;
448
449 eth = (const struct eth_header *)data->header;
450
451 l3 = eth + 1;
452
453 /* Ethernet */
454 ds_put_format(ds, "header(size=%"PRIu8",type=%"PRIu8",eth(dst=",
455 data->header_len, data->tnl_type);
456 ds_put_format(ds, ETH_ADDR_FMT, ETH_ADDR_ARGS(eth->eth_dst));
457 ds_put_format(ds, ",src=");
458 ds_put_format(ds, ETH_ADDR_FMT, ETH_ADDR_ARGS(eth->eth_src));
459 ds_put_format(ds, ",dl_type=0x%04"PRIx16"),", ntohs(eth->eth_type));
460
461 if (eth->eth_type == htons(ETH_TYPE_IP)) {
462 /* IPv4 */
463 const struct ip_header *ip;
464 ip = (const struct ip_header *) l3;
465 ds_put_format(ds, "ipv4(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
466 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=0x%"PRIx16"),",
467 IP_ARGS(get_16aligned_be32(&ip->ip_src)),
468 IP_ARGS(get_16aligned_be32(&ip->ip_dst)),
469 ip->ip_proto, ip->ip_tos,
470 ip->ip_ttl,
471 ntohs(ip->ip_frag_off));
472 l4 = (ip + 1);
473 } else {
474 const struct ip6_hdr *ip6;
475 ip6 = (const struct ip6_hdr *) l3;
476 ds_put_format(ds, "ipv6(src=");
477 ipv6_format_addr(&ip6->ip6_src, ds);
478 ds_put_format(ds, ",dst=");
479 ipv6_format_addr(&ip6->ip6_dst, ds);
480 ds_put_format(ds, ",label=%i,proto=%"PRIu8",tclass=0x%"PRIx8
481 ",hlimit=%"PRIu8"),",
482 ntohl(ip6->ip6_flow) & IPV6_LABEL_MASK, ip6->ip6_nxt,
483 (ntohl(ip6->ip6_flow) >> 20) & 0xff, ip6->ip6_hlim);
484 l4 = (ip6 + 1);
485 }
486
487 udp = (const struct udp_header *) l4;
488
489 if (data->tnl_type == OVS_VPORT_TYPE_VXLAN) {
490 const struct vxlanhdr *vxh;
491
492 vxh = format_udp_tnl_push_header(ds, udp);
493
494 ds_put_format(ds, "vxlan(flags=0x%"PRIx32",vni=0x%"PRIx32")",
495 ntohl(get_16aligned_be32(&vxh->vx_flags)),
496 ntohl(get_16aligned_be32(&vxh->vx_vni)) >> 8);
497 } else if (data->tnl_type == OVS_VPORT_TYPE_GENEVE) {
498 const struct genevehdr *gnh;
499
500 gnh = format_udp_tnl_push_header(ds, udp);
501
502 ds_put_format(ds, "geneve(%s%svni=0x%"PRIx32,
503 gnh->oam ? "oam," : "",
504 gnh->critical ? "crit," : "",
505 ntohl(get_16aligned_be32(&gnh->vni)) >> 8);
506
507 if (gnh->opt_len) {
508 ds_put_cstr(ds, ",options(");
509 format_geneve_opts(gnh->options, NULL, gnh->opt_len * 4,
510 ds, false);
511 ds_put_char(ds, ')');
512 }
513
514 ds_put_char(ds, ')');
515 } else if (data->tnl_type == OVS_VPORT_TYPE_GRE) {
516 const struct gre_base_hdr *greh;
517 ovs_16aligned_be32 *options;
518
519 greh = (const struct gre_base_hdr *) l4;
520
521 ds_put_format(ds, "gre((flags=0x%"PRIx16",proto=0x%"PRIx16")",
522 ntohs(greh->flags), ntohs(greh->protocol));
523 options = (ovs_16aligned_be32 *)(greh + 1);
524 if (greh->flags & htons(GRE_CSUM)) {
525 ds_put_format(ds, ",csum=0x%"PRIx16, ntohs(*((ovs_be16 *)options)));
526 options++;
527 }
528 if (greh->flags & htons(GRE_KEY)) {
529 ds_put_format(ds, ",key=0x%"PRIx32, ntohl(get_16aligned_be32(options)));
530 options++;
531 }
532 if (greh->flags & htons(GRE_SEQ)) {
533 ds_put_format(ds, ",seq=0x%"PRIx32, ntohl(get_16aligned_be32(options)));
534 options++;
535 }
536 ds_put_format(ds, ")");
537 }
538 ds_put_format(ds, ")");
539 }
540
541 static void
542 format_odp_tnl_push_action(struct ds *ds, const struct nlattr *attr)
543 {
544 struct ovs_action_push_tnl *data;
545
546 data = (struct ovs_action_push_tnl *) nl_attr_get(attr);
547
548 ds_put_format(ds, "tnl_push(tnl_port(%"PRIu32"),", data->tnl_port);
549 format_odp_tnl_push_header(ds, data);
550 ds_put_format(ds, ",out_port(%"PRIu32"))", data->out_port);
551 }
552
553 static const struct nl_policy ovs_nat_policy[] = {
554 [OVS_NAT_ATTR_SRC] = { .type = NL_A_FLAG, .optional = true, },
555 [OVS_NAT_ATTR_DST] = { .type = NL_A_FLAG, .optional = true, },
556 [OVS_NAT_ATTR_IP_MIN] = { .type = NL_A_UNSPEC, .optional = true,
557 .min_len = sizeof(struct in_addr),
558 .max_len = sizeof(struct in6_addr)},
559 [OVS_NAT_ATTR_IP_MAX] = { .type = NL_A_UNSPEC, .optional = true,
560 .min_len = sizeof(struct in_addr),
561 .max_len = sizeof(struct in6_addr)},
562 [OVS_NAT_ATTR_PROTO_MIN] = { .type = NL_A_U16, .optional = true, },
563 [OVS_NAT_ATTR_PROTO_MAX] = { .type = NL_A_U16, .optional = true, },
564 [OVS_NAT_ATTR_PERSISTENT] = { .type = NL_A_FLAG, .optional = true, },
565 [OVS_NAT_ATTR_PROTO_HASH] = { .type = NL_A_FLAG, .optional = true, },
566 [OVS_NAT_ATTR_PROTO_RANDOM] = { .type = NL_A_FLAG, .optional = true, },
567 };
568
569 static void
570 format_odp_ct_nat(struct ds *ds, const struct nlattr *attr)
571 {
572 struct nlattr *a[ARRAY_SIZE(ovs_nat_policy)];
573 size_t addr_len;
574 ovs_be32 ip_min, ip_max;
575 struct in6_addr ip6_min, ip6_max;
576 uint16_t proto_min, proto_max;
577
578 if (!nl_parse_nested(attr, ovs_nat_policy, a, ARRAY_SIZE(a))) {
579 ds_put_cstr(ds, "nat(error: nl_parse_nested() failed.)");
580 return;
581 }
582 /* If no type, then nothing else either. */
583 if (!(a[OVS_NAT_ATTR_SRC] || a[OVS_NAT_ATTR_DST])
584 && (a[OVS_NAT_ATTR_IP_MIN] || a[OVS_NAT_ATTR_IP_MAX]
585 || a[OVS_NAT_ATTR_PROTO_MIN] || a[OVS_NAT_ATTR_PROTO_MAX]
586 || a[OVS_NAT_ATTR_PERSISTENT] || a[OVS_NAT_ATTR_PROTO_HASH]
587 || a[OVS_NAT_ATTR_PROTO_RANDOM])) {
588 ds_put_cstr(ds, "nat(error: options allowed only with \"src\" or \"dst\")");
589 return;
590 }
591 /* Both SNAT & DNAT may not be specified. */
592 if (a[OVS_NAT_ATTR_SRC] && a[OVS_NAT_ATTR_DST]) {
593 ds_put_cstr(ds, "nat(error: Only one of \"src\" or \"dst\" may be present.)");
594 return;
595 }
596 /* proto may not appear without ip. */
597 if (!a[OVS_NAT_ATTR_IP_MIN] && a[OVS_NAT_ATTR_PROTO_MIN]) {
598 ds_put_cstr(ds, "nat(error: proto but no IP.)");
599 return;
600 }
601 /* MAX may not appear without MIN. */
602 if ((!a[OVS_NAT_ATTR_IP_MIN] && a[OVS_NAT_ATTR_IP_MAX])
603 || (!a[OVS_NAT_ATTR_PROTO_MIN] && a[OVS_NAT_ATTR_PROTO_MAX])) {
604 ds_put_cstr(ds, "nat(error: range max without min.)");
605 return;
606 }
607 /* Address sizes must match. */
608 if ((a[OVS_NAT_ATTR_IP_MIN]
609 && (nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN]) != sizeof(ovs_be32) &&
610 nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN]) != sizeof(struct in6_addr)))
611 || (a[OVS_NAT_ATTR_IP_MIN] && a[OVS_NAT_ATTR_IP_MAX]
612 && (nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN])
613 != nl_attr_get_size(a[OVS_NAT_ATTR_IP_MAX])))) {
614 ds_put_cstr(ds, "nat(error: IP address sizes do not match)");
615 return;
616 }
617
618 addr_len = a[OVS_NAT_ATTR_IP_MIN]
619 ? nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN]) : 0;
620 ip_min = addr_len == sizeof(ovs_be32) && a[OVS_NAT_ATTR_IP_MIN]
621 ? nl_attr_get_be32(a[OVS_NAT_ATTR_IP_MIN]) : 0;
622 ip_max = addr_len == sizeof(ovs_be32) && a[OVS_NAT_ATTR_IP_MAX]
623 ? nl_attr_get_be32(a[OVS_NAT_ATTR_IP_MAX]) : 0;
624 if (addr_len == sizeof ip6_min) {
625 ip6_min = a[OVS_NAT_ATTR_IP_MIN]
626 ? *(struct in6_addr *)nl_attr_get(a[OVS_NAT_ATTR_IP_MIN])
627 : in6addr_any;
628 ip6_max = a[OVS_NAT_ATTR_IP_MAX]
629 ? *(struct in6_addr *)nl_attr_get(a[OVS_NAT_ATTR_IP_MAX])
630 : in6addr_any;
631 }
632 proto_min = a[OVS_NAT_ATTR_PROTO_MIN]
633 ? nl_attr_get_u16(a[OVS_NAT_ATTR_PROTO_MIN]) : 0;
634 proto_max = a[OVS_NAT_ATTR_PROTO_MAX]
635 ? nl_attr_get_u16(a[OVS_NAT_ATTR_PROTO_MAX]) : 0;
636
637 if ((addr_len == sizeof(ovs_be32)
638 && ip_max && ntohl(ip_min) > ntohl(ip_max))
639 || (addr_len == sizeof(struct in6_addr)
640 && !ipv6_mask_is_any(&ip6_max)
641 && memcmp(&ip6_min, &ip6_max, sizeof ip6_min) > 0)
642 || (proto_max && proto_min > proto_max)) {
643 ds_put_cstr(ds, "nat(range error)");
644 return;
645 }
646
647 ds_put_cstr(ds, "nat");
648 if (a[OVS_NAT_ATTR_SRC] || a[OVS_NAT_ATTR_DST]) {
649 ds_put_char(ds, '(');
650 if (a[OVS_NAT_ATTR_SRC]) {
651 ds_put_cstr(ds, "src");
652 } else if (a[OVS_NAT_ATTR_DST]) {
653 ds_put_cstr(ds, "dst");
654 }
655
656 if (addr_len > 0) {
657 ds_put_cstr(ds, "=");
658
659 if (addr_len == sizeof ip_min) {
660 ds_put_format(ds, IP_FMT, IP_ARGS(ip_min));
661
662 if (ip_max && ip_max != ip_min) {
663 ds_put_format(ds, "-"IP_FMT, IP_ARGS(ip_max));
664 }
665 } else if (addr_len == sizeof ip6_min) {
666 ipv6_format_addr_bracket(&ip6_min, ds, proto_min);
667
668 if (!ipv6_mask_is_any(&ip6_max) &&
669 memcmp(&ip6_max, &ip6_min, sizeof ip6_max) != 0) {
670 ds_put_char(ds, '-');
671 ipv6_format_addr_bracket(&ip6_max, ds, proto_min);
672 }
673 }
674 if (proto_min) {
675 ds_put_format(ds, ":%"PRIu16, proto_min);
676
677 if (proto_max && proto_max != proto_min) {
678 ds_put_format(ds, "-%"PRIu16, proto_max);
679 }
680 }
681 }
682 ds_put_char(ds, ',');
683 if (a[OVS_NAT_ATTR_PERSISTENT]) {
684 ds_put_cstr(ds, "persistent,");
685 }
686 if (a[OVS_NAT_ATTR_PROTO_HASH]) {
687 ds_put_cstr(ds, "hash,");
688 }
689 if (a[OVS_NAT_ATTR_PROTO_RANDOM]) {
690 ds_put_cstr(ds, "random,");
691 }
692 ds_chomp(ds, ',');
693 ds_put_char(ds, ')');
694 }
695 }
696
697 static const struct nl_policy ovs_conntrack_policy[] = {
698 [OVS_CT_ATTR_COMMIT] = { .type = NL_A_FLAG, .optional = true, },
699 [OVS_CT_ATTR_ZONE] = { .type = NL_A_U16, .optional = true, },
700 [OVS_CT_ATTR_MARK] = { .type = NL_A_UNSPEC, .optional = true,
701 .min_len = sizeof(uint32_t) * 2 },
702 [OVS_CT_ATTR_LABELS] = { .type = NL_A_UNSPEC, .optional = true,
703 .min_len = sizeof(struct ovs_key_ct_labels) * 2 },
704 [OVS_CT_ATTR_HELPER] = { .type = NL_A_STRING, .optional = true,
705 .min_len = 1, .max_len = 16 },
706 [OVS_CT_ATTR_NAT] = { .type = NL_A_UNSPEC, .optional = true },
707 };
708
709 static void
710 format_odp_conntrack_action(struct ds *ds, const struct nlattr *attr)
711 {
712 struct nlattr *a[ARRAY_SIZE(ovs_conntrack_policy)];
713 const ovs_u128 *label;
714 const uint32_t *mark;
715 const char *helper;
716 uint16_t zone;
717 bool commit;
718 const struct nlattr *nat;
719
720 if (!nl_parse_nested(attr, ovs_conntrack_policy, a, ARRAY_SIZE(a))) {
721 ds_put_cstr(ds, "ct(error)");
722 return;
723 }
724
725 commit = a[OVS_CT_ATTR_COMMIT] ? true : false;
726 zone = a[OVS_CT_ATTR_ZONE] ? nl_attr_get_u16(a[OVS_CT_ATTR_ZONE]) : 0;
727 mark = a[OVS_CT_ATTR_MARK] ? nl_attr_get(a[OVS_CT_ATTR_MARK]) : NULL;
728 label = a[OVS_CT_ATTR_LABELS] ? nl_attr_get(a[OVS_CT_ATTR_LABELS]): NULL;
729 helper = a[OVS_CT_ATTR_HELPER] ? nl_attr_get(a[OVS_CT_ATTR_HELPER]) : NULL;
730 nat = a[OVS_CT_ATTR_NAT];
731
732 ds_put_format(ds, "ct");
733 if (commit || zone || mark || label || helper || nat) {
734 ds_put_cstr(ds, "(");
735 if (commit) {
736 ds_put_format(ds, "commit,");
737 }
738 if (zone) {
739 ds_put_format(ds, "zone=%"PRIu16",", zone);
740 }
741 if (mark) {
742 ds_put_format(ds, "mark=%#"PRIx32"/%#"PRIx32",", *mark,
743 *(mark + 1));
744 }
745 if (label) {
746 ds_put_format(ds, "label=");
747 format_u128(ds, label, label + 1, true);
748 ds_put_char(ds, ',');
749 }
750 if (helper) {
751 ds_put_format(ds, "helper=%s,", helper);
752 }
753 if (nat) {
754 format_odp_ct_nat(ds, nat);
755 }
756 ds_chomp(ds, ',');
757 ds_put_cstr(ds, ")");
758 }
759 }
760
761 static void
762 format_odp_action(struct ds *ds, const struct nlattr *a)
763 {
764 int expected_len;
765 enum ovs_action_attr type = nl_attr_type(a);
766 size_t size;
767
768 expected_len = odp_action_len(nl_attr_type(a));
769 if (expected_len != ATTR_LEN_VARIABLE &&
770 nl_attr_get_size(a) != expected_len) {
771 ds_put_format(ds, "bad length %"PRIuSIZE", expected %d for: ",
772 nl_attr_get_size(a), expected_len);
773 format_generic_odp_action(ds, a);
774 return;
775 }
776
777 switch (type) {
778 case OVS_ACTION_ATTR_OUTPUT:
779 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
780 break;
781 case OVS_ACTION_ATTR_TRUNC: {
782 const struct ovs_action_trunc *trunc =
783 nl_attr_get_unspec(a, sizeof *trunc);
784
785 ds_put_format(ds, "trunc(%"PRIu32")", trunc->max_len);
786 break;
787 }
788 break;
789 case OVS_ACTION_ATTR_TUNNEL_POP:
790 ds_put_format(ds, "tnl_pop(%"PRIu32")", nl_attr_get_u32(a));
791 break;
792 case OVS_ACTION_ATTR_TUNNEL_PUSH:
793 format_odp_tnl_push_action(ds, a);
794 break;
795 case OVS_ACTION_ATTR_USERSPACE:
796 format_odp_userspace_action(ds, a);
797 break;
798 case OVS_ACTION_ATTR_RECIRC:
799 format_odp_recirc_action(ds, nl_attr_get_u32(a));
800 break;
801 case OVS_ACTION_ATTR_HASH:
802 format_odp_hash_action(ds, nl_attr_get(a));
803 break;
804 case OVS_ACTION_ATTR_SET_MASKED:
805 a = nl_attr_get(a);
806 size = nl_attr_get_size(a) / 2;
807 ds_put_cstr(ds, "set(");
808
809 /* Masked set action not supported for tunnel key, which is bigger. */
810 if (size <= sizeof(struct ovs_key_ipv6)) {
811 struct nlattr attr[1 + DIV_ROUND_UP(sizeof(struct ovs_key_ipv6),
812 sizeof(struct nlattr))];
813 struct nlattr mask[1 + DIV_ROUND_UP(sizeof(struct ovs_key_ipv6),
814 sizeof(struct nlattr))];
815
816 mask->nla_type = attr->nla_type = nl_attr_type(a);
817 mask->nla_len = attr->nla_len = NLA_HDRLEN + size;
818 memcpy(attr + 1, (char *)(a + 1), size);
819 memcpy(mask + 1, (char *)(a + 1) + size, size);
820 format_odp_key_attr(attr, mask, NULL, ds, false);
821 } else {
822 format_odp_key_attr(a, NULL, NULL, ds, false);
823 }
824 ds_put_cstr(ds, ")");
825 break;
826 case OVS_ACTION_ATTR_SET:
827 ds_put_cstr(ds, "set(");
828 format_odp_key_attr(nl_attr_get(a), NULL, NULL, ds, true);
829 ds_put_cstr(ds, ")");
830 break;
831 case OVS_ACTION_ATTR_PUSH_VLAN: {
832 const struct ovs_action_push_vlan *vlan = nl_attr_get(a);
833 ds_put_cstr(ds, "push_vlan(");
834 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
835 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
836 }
837 format_vlan_tci(ds, vlan->vlan_tci, OVS_BE16_MAX, false);
838 ds_put_char(ds, ')');
839 break;
840 }
841 case OVS_ACTION_ATTR_POP_VLAN:
842 ds_put_cstr(ds, "pop_vlan");
843 break;
844 case OVS_ACTION_ATTR_PUSH_MPLS: {
845 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
846 ds_put_cstr(ds, "push_mpls(");
847 format_mpls_lse(ds, mpls->mpls_lse);
848 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
849 break;
850 }
851 case OVS_ACTION_ATTR_POP_MPLS: {
852 ovs_be16 ethertype = nl_attr_get_be16(a);
853 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
854 break;
855 }
856 case OVS_ACTION_ATTR_SAMPLE:
857 format_odp_sample_action(ds, a);
858 break;
859 case OVS_ACTION_ATTR_CT:
860 format_odp_conntrack_action(ds, a);
861 break;
862 case OVS_ACTION_ATTR_UNSPEC:
863 case __OVS_ACTION_ATTR_MAX:
864 default:
865 format_generic_odp_action(ds, a);
866 break;
867 }
868 }
869
870 void
871 format_odp_actions(struct ds *ds, const struct nlattr *actions,
872 size_t actions_len)
873 {
874 if (actions_len) {
875 const struct nlattr *a;
876 unsigned int left;
877
878 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
879 if (a != actions) {
880 ds_put_char(ds, ',');
881 }
882 format_odp_action(ds, a);
883 }
884 if (left) {
885 int i;
886
887 if (left == actions_len) {
888 ds_put_cstr(ds, "<empty>");
889 }
890 ds_put_format(ds, ",***%u leftover bytes*** (", left);
891 for (i = 0; i < left; i++) {
892 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
893 }
894 ds_put_char(ds, ')');
895 }
896 } else {
897 ds_put_cstr(ds, "drop");
898 }
899 }
900
901 /* Separate out parse_odp_userspace_action() function. */
902 static int
903 parse_odp_userspace_action(const char *s, struct ofpbuf *actions)
904 {
905 uint32_t pid;
906 union user_action_cookie cookie;
907 struct ofpbuf buf;
908 odp_port_t tunnel_out_port;
909 int n = -1;
910 void *user_data = NULL;
911 size_t user_data_size = 0;
912 bool include_actions = false;
913 int res;
914
915 if (!ovs_scan(s, "userspace(pid=%"SCNi32"%n", &pid, &n)) {
916 return -EINVAL;
917 }
918
919 ofpbuf_init(&buf, 16);
920
921 {
922 uint32_t output;
923 uint32_t probability;
924 uint32_t collector_set_id;
925 uint32_t obs_domain_id;
926 uint32_t obs_point_id;
927 int vid, pcp;
928 int n1 = -1;
929 if (ovs_scan(&s[n], ",sFlow(vid=%i,"
930 "pcp=%i,output=%"SCNi32")%n",
931 &vid, &pcp, &output, &n1)) {
932 uint16_t tci;
933
934 n += n1;
935 tci = vid | (pcp << VLAN_PCP_SHIFT);
936 if (tci) {
937 tci |= VLAN_CFI;
938 }
939
940 cookie.type = USER_ACTION_COOKIE_SFLOW;
941 cookie.sflow.vlan_tci = htons(tci);
942 cookie.sflow.output = output;
943 user_data = &cookie;
944 user_data_size = sizeof cookie.sflow;
945 } else if (ovs_scan(&s[n], ",slow_path(%n",
946 &n1)) {
947 n += n1;
948 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
949 cookie.slow_path.unused = 0;
950 cookie.slow_path.reason = 0;
951
952 res = parse_odp_flags(&s[n], slow_path_reason_to_string,
953 &cookie.slow_path.reason,
954 SLOW_PATH_REASON_MASK, NULL);
955 if (res < 0 || s[n + res] != ')') {
956 goto out;
957 }
958 n += res + 1;
959
960 user_data = &cookie;
961 user_data_size = sizeof cookie.slow_path;
962 } else if (ovs_scan(&s[n], ",flow_sample(probability=%"SCNi32","
963 "collector_set_id=%"SCNi32","
964 "obs_domain_id=%"SCNi32","
965 "obs_point_id=%"SCNi32","
966 "output_port=%"SCNi32")%n",
967 &probability, &collector_set_id,
968 &obs_domain_id, &obs_point_id,
969 &output, &n1)) {
970 n += n1;
971
972 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
973 cookie.flow_sample.probability = probability;
974 cookie.flow_sample.collector_set_id = collector_set_id;
975 cookie.flow_sample.obs_domain_id = obs_domain_id;
976 cookie.flow_sample.obs_point_id = obs_point_id;
977 cookie.flow_sample.output_odp_port = u32_to_odp(output);
978 user_data = &cookie;
979 user_data_size = sizeof cookie.flow_sample;
980 } else if (ovs_scan(&s[n], ",ipfix(output_port=%"SCNi32")%n",
981 &output, &n1) ) {
982 n += n1;
983 cookie.type = USER_ACTION_COOKIE_IPFIX;
984 cookie.ipfix.output_odp_port = u32_to_odp(output);
985 user_data = &cookie;
986 user_data_size = sizeof cookie.ipfix;
987 } else if (ovs_scan(&s[n], ",userdata(%n",
988 &n1)) {
989 char *end;
990
991 n += n1;
992 end = ofpbuf_put_hex(&buf, &s[n], NULL);
993 if (end[0] != ')') {
994 res = -EINVAL;
995 goto out;
996 }
997 user_data = buf.data;
998 user_data_size = buf.size;
999 n = (end + 1) - s;
1000 }
1001 }
1002
1003 {
1004 int n1 = -1;
1005 if (ovs_scan(&s[n], ",actions%n", &n1)) {
1006 n += n1;
1007 include_actions = true;
1008 }
1009 }
1010
1011 {
1012 int n1 = -1;
1013 if (ovs_scan(&s[n], ",tunnel_out_port=%"SCNi32")%n",
1014 &tunnel_out_port, &n1)) {
1015 odp_put_userspace_action(pid, user_data, user_data_size,
1016 tunnel_out_port, include_actions, actions);
1017 res = n + n1;
1018 } else if (s[n] == ')') {
1019 odp_put_userspace_action(pid, user_data, user_data_size,
1020 ODPP_NONE, include_actions, actions);
1021 res = n + 1;
1022 } else {
1023 res = -EINVAL;
1024 }
1025 }
1026 out:
1027 ofpbuf_uninit(&buf);
1028 return res;
1029 }
1030
1031 static int
1032 ovs_parse_tnl_push(const char *s, struct ovs_action_push_tnl *data)
1033 {
1034 struct eth_header *eth;
1035 struct ip_header *ip;
1036 struct ovs_16aligned_ip6_hdr *ip6;
1037 struct udp_header *udp;
1038 struct gre_base_hdr *greh;
1039 uint16_t gre_proto, gre_flags, dl_type, udp_src, udp_dst, csum;
1040 ovs_be32 sip, dip;
1041 uint32_t tnl_type = 0, header_len = 0, ip_len = 0;
1042 void *l3, *l4;
1043 int n = 0;
1044
1045 if (!ovs_scan_len(s, &n, "tnl_push(tnl_port(%"SCNi32"),", &data->tnl_port)) {
1046 return -EINVAL;
1047 }
1048 eth = (struct eth_header *) data->header;
1049 l3 = (data->header + sizeof *eth);
1050 ip = (struct ip_header *) l3;
1051 ip6 = (struct ovs_16aligned_ip6_hdr *) l3;
1052 if (!ovs_scan_len(s, &n, "header(size=%"SCNi32",type=%"SCNi32","
1053 "eth(dst="ETH_ADDR_SCAN_FMT",",
1054 &data->header_len,
1055 &data->tnl_type,
1056 ETH_ADDR_SCAN_ARGS(eth->eth_dst))) {
1057 return -EINVAL;
1058 }
1059
1060 if (!ovs_scan_len(s, &n, "src="ETH_ADDR_SCAN_FMT",",
1061 ETH_ADDR_SCAN_ARGS(eth->eth_src))) {
1062 return -EINVAL;
1063 }
1064 if (!ovs_scan_len(s, &n, "dl_type=0x%"SCNx16"),", &dl_type)) {
1065 return -EINVAL;
1066 }
1067 eth->eth_type = htons(dl_type);
1068
1069 if (eth->eth_type == htons(ETH_TYPE_IP)) {
1070 /* IPv4 */
1071 uint16_t ip_frag_off;
1072 if (!ovs_scan_len(s, &n, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT",proto=%"SCNi8
1073 ",tos=%"SCNi8",ttl=%"SCNi8",frag=0x%"SCNx16"),",
1074 IP_SCAN_ARGS(&sip),
1075 IP_SCAN_ARGS(&dip),
1076 &ip->ip_proto, &ip->ip_tos,
1077 &ip->ip_ttl, &ip_frag_off)) {
1078 return -EINVAL;
1079 }
1080 put_16aligned_be32(&ip->ip_src, sip);
1081 put_16aligned_be32(&ip->ip_dst, dip);
1082 ip->ip_frag_off = htons(ip_frag_off);
1083 ip_len = sizeof *ip;
1084 } else {
1085 char sip6_s[IPV6_SCAN_LEN + 1];
1086 char dip6_s[IPV6_SCAN_LEN + 1];
1087 struct in6_addr sip6, dip6;
1088 uint8_t tclass;
1089 uint32_t label;
1090 if (!ovs_scan_len(s, &n, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT
1091 ",label=%i,proto=%"SCNi8",tclass=0x%"SCNx8
1092 ",hlimit=%"SCNi8"),",
1093 sip6_s, dip6_s, &label, &ip6->ip6_nxt,
1094 &tclass, &ip6->ip6_hlim)
1095 || (label & ~IPV6_LABEL_MASK) != 0
1096 || inet_pton(AF_INET6, sip6_s, &sip6) != 1
1097 || inet_pton(AF_INET6, dip6_s, &dip6) != 1) {
1098 return -EINVAL;
1099 }
1100 put_16aligned_be32(&ip6->ip6_flow, htonl(6 << 28) |
1101 htonl(tclass << 20) | htonl(label));
1102 memcpy(&ip6->ip6_src, &sip6, sizeof(ip6->ip6_src));
1103 memcpy(&ip6->ip6_dst, &dip6, sizeof(ip6->ip6_dst));
1104 ip_len = sizeof *ip6;
1105 }
1106
1107 /* Tunnel header */
1108 l4 = ((uint8_t *) l3 + ip_len);
1109 udp = (struct udp_header *) l4;
1110 greh = (struct gre_base_hdr *) l4;
1111 if (ovs_scan_len(s, &n, "udp(src=%"SCNi16",dst=%"SCNi16",csum=0x%"SCNx16"),",
1112 &udp_src, &udp_dst, &csum)) {
1113 uint32_t vx_flags, vni;
1114
1115 udp->udp_src = htons(udp_src);
1116 udp->udp_dst = htons(udp_dst);
1117 udp->udp_len = 0;
1118 udp->udp_csum = htons(csum);
1119
1120 if (ovs_scan_len(s, &n, "vxlan(flags=0x%"SCNx32",vni=0x%"SCNx32"))",
1121 &vx_flags, &vni)) {
1122 struct vxlanhdr *vxh = (struct vxlanhdr *) (udp + 1);
1123
1124 put_16aligned_be32(&vxh->vx_flags, htonl(vx_flags));
1125 put_16aligned_be32(&vxh->vx_vni, htonl(vni << 8));
1126 tnl_type = OVS_VPORT_TYPE_VXLAN;
1127 header_len = sizeof *eth + ip_len +
1128 sizeof *udp + sizeof *vxh;
1129 } else if (ovs_scan_len(s, &n, "geneve(")) {
1130 struct genevehdr *gnh = (struct genevehdr *) (udp + 1);
1131
1132 memset(gnh, 0, sizeof *gnh);
1133 header_len = sizeof *eth + ip_len +
1134 sizeof *udp + sizeof *gnh;
1135
1136 if (ovs_scan_len(s, &n, "oam,")) {
1137 gnh->oam = 1;
1138 }
1139 if (ovs_scan_len(s, &n, "crit,")) {
1140 gnh->critical = 1;
1141 }
1142 if (!ovs_scan_len(s, &n, "vni=%"SCNi32, &vni)) {
1143 return -EINVAL;
1144 }
1145 if (ovs_scan_len(s, &n, ",options(")) {
1146 struct geneve_scan options;
1147 int len;
1148
1149 memset(&options, 0, sizeof options);
1150 len = scan_geneve(s + n, &options, NULL);
1151 if (!len) {
1152 return -EINVAL;
1153 }
1154
1155 memcpy(gnh->options, options.d, options.len);
1156 gnh->opt_len = options.len / 4;
1157 header_len += options.len;
1158
1159 n += len;
1160 }
1161 if (!ovs_scan_len(s, &n, "))")) {
1162 return -EINVAL;
1163 }
1164
1165 gnh->proto_type = htons(ETH_TYPE_TEB);
1166 put_16aligned_be32(&gnh->vni, htonl(vni << 8));
1167 tnl_type = OVS_VPORT_TYPE_GENEVE;
1168 } else {
1169 return -EINVAL;
1170 }
1171 } else if (ovs_scan_len(s, &n, "gre((flags=0x%"SCNx16",proto=0x%"SCNx16")",
1172 &gre_flags, &gre_proto)){
1173
1174 tnl_type = OVS_VPORT_TYPE_GRE;
1175 greh->flags = htons(gre_flags);
1176 greh->protocol = htons(gre_proto);
1177 ovs_16aligned_be32 *options = (ovs_16aligned_be32 *) (greh + 1);
1178
1179 if (greh->flags & htons(GRE_CSUM)) {
1180 if (!ovs_scan_len(s, &n, ",csum=0x%"SCNx16, &csum)) {
1181 return -EINVAL;
1182 }
1183
1184 memset(options, 0, sizeof *options);
1185 *((ovs_be16 *)options) = htons(csum);
1186 options++;
1187 }
1188 if (greh->flags & htons(GRE_KEY)) {
1189 uint32_t key;
1190
1191 if (!ovs_scan_len(s, &n, ",key=0x%"SCNx32, &key)) {
1192 return -EINVAL;
1193 }
1194
1195 put_16aligned_be32(options, htonl(key));
1196 options++;
1197 }
1198 if (greh->flags & htons(GRE_SEQ)) {
1199 uint32_t seq;
1200
1201 if (!ovs_scan_len(s, &n, ",seq=0x%"SCNx32, &seq)) {
1202 return -EINVAL;
1203 }
1204 put_16aligned_be32(options, htonl(seq));
1205 options++;
1206 }
1207
1208 if (!ovs_scan_len(s, &n, "))")) {
1209 return -EINVAL;
1210 }
1211
1212 header_len = sizeof *eth + ip_len +
1213 ((uint8_t *) options - (uint8_t *) greh);
1214 } else {
1215 return -EINVAL;
1216 }
1217
1218 /* check tunnel meta data. */
1219 if (data->tnl_type != tnl_type) {
1220 return -EINVAL;
1221 }
1222 if (data->header_len != header_len) {
1223 return -EINVAL;
1224 }
1225
1226 /* Out port */
1227 if (!ovs_scan_len(s, &n, ",out_port(%"SCNi32"))", &data->out_port)) {
1228 return -EINVAL;
1229 }
1230
1231 return n;
1232 }
1233
1234 struct ct_nat_params {
1235 bool snat;
1236 bool dnat;
1237 size_t addr_len;
1238 union {
1239 ovs_be32 ip;
1240 struct in6_addr ip6;
1241 } addr_min;
1242 union {
1243 ovs_be32 ip;
1244 struct in6_addr ip6;
1245 } addr_max;
1246 uint16_t proto_min;
1247 uint16_t proto_max;
1248 bool persistent;
1249 bool proto_hash;
1250 bool proto_random;
1251 };
1252
1253 static int
1254 scan_ct_nat_range(const char *s, int *n, struct ct_nat_params *p)
1255 {
1256 if (ovs_scan_len(s, n, "=")) {
1257 char ipv6_s[IPV6_SCAN_LEN + 1];
1258 struct in6_addr ipv6;
1259
1260 if (ovs_scan_len(s, n, IP_SCAN_FMT, IP_SCAN_ARGS(&p->addr_min.ip))) {
1261 p->addr_len = sizeof p->addr_min.ip;
1262 if (ovs_scan_len(s, n, "-")) {
1263 if (!ovs_scan_len(s, n, IP_SCAN_FMT,
1264 IP_SCAN_ARGS(&p->addr_max.ip))) {
1265 return -EINVAL;
1266 }
1267 }
1268 } else if ((ovs_scan_len(s, n, IPV6_SCAN_FMT, ipv6_s)
1269 || ovs_scan_len(s, n, "["IPV6_SCAN_FMT"]", ipv6_s))
1270 && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
1271 p->addr_len = sizeof p->addr_min.ip6;
1272 p->addr_min.ip6 = ipv6;
1273 if (ovs_scan_len(s, n, "-")) {
1274 if ((ovs_scan_len(s, n, IPV6_SCAN_FMT, ipv6_s)
1275 || ovs_scan_len(s, n, "["IPV6_SCAN_FMT"]", ipv6_s))
1276 && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
1277 p->addr_max.ip6 = ipv6;
1278 } else {
1279 return -EINVAL;
1280 }
1281 }
1282 } else {
1283 return -EINVAL;
1284 }
1285 if (ovs_scan_len(s, n, ":%"SCNu16, &p->proto_min)) {
1286 if (ovs_scan_len(s, n, "-")) {
1287 if (!ovs_scan_len(s, n, "%"SCNu16, &p->proto_max)) {
1288 return -EINVAL;
1289 }
1290 }
1291 }
1292 }
1293 return 0;
1294 }
1295
1296 static int
1297 scan_ct_nat(const char *s, struct ct_nat_params *p)
1298 {
1299 int n = 0;
1300
1301 if (ovs_scan_len(s, &n, "nat")) {
1302 memset(p, 0, sizeof *p);
1303
1304 if (ovs_scan_len(s, &n, "(")) {
1305 char *end;
1306 int end_n;
1307
1308 end = strchr(s + n, ')');
1309 if (!end) {
1310 return -EINVAL;
1311 }
1312 end_n = end - s;
1313
1314 while (n < end_n) {
1315 n += strspn(s + n, delimiters);
1316 if (ovs_scan_len(s, &n, "src")) {
1317 int err = scan_ct_nat_range(s, &n, p);
1318 if (err) {
1319 return err;
1320 }
1321 p->snat = true;
1322 continue;
1323 }
1324 if (ovs_scan_len(s, &n, "dst")) {
1325 int err = scan_ct_nat_range(s, &n, p);
1326 if (err) {
1327 return err;
1328 }
1329 p->dnat = true;
1330 continue;
1331 }
1332 if (ovs_scan_len(s, &n, "persistent")) {
1333 p->persistent = true;
1334 continue;
1335 }
1336 if (ovs_scan_len(s, &n, "hash")) {
1337 p->proto_hash = true;
1338 continue;
1339 }
1340 if (ovs_scan_len(s, &n, "random")) {
1341 p->proto_random = true;
1342 continue;
1343 }
1344 return -EINVAL;
1345 }
1346
1347 if (p->snat && p->dnat) {
1348 return -EINVAL;
1349 }
1350 if ((p->addr_len != 0 &&
1351 memcmp(&p->addr_max, &in6addr_any, p->addr_len) &&
1352 memcmp(&p->addr_max, &p->addr_min, p->addr_len) < 0) ||
1353 (p->proto_max && p->proto_max < p->proto_min)) {
1354 return -EINVAL;
1355 }
1356 if (p->proto_hash && p->proto_random) {
1357 return -EINVAL;
1358 }
1359 n++;
1360 }
1361 }
1362 return n;
1363 }
1364
1365 static void
1366 nl_msg_put_ct_nat(struct ct_nat_params *p, struct ofpbuf *actions)
1367 {
1368 size_t start = nl_msg_start_nested(actions, OVS_CT_ATTR_NAT);
1369
1370 if (p->snat) {
1371 nl_msg_put_flag(actions, OVS_NAT_ATTR_SRC);
1372 } else if (p->dnat) {
1373 nl_msg_put_flag(actions, OVS_NAT_ATTR_DST);
1374 } else {
1375 goto out;
1376 }
1377 if (p->addr_len != 0) {
1378 nl_msg_put_unspec(actions, OVS_NAT_ATTR_IP_MIN, &p->addr_min,
1379 p->addr_len);
1380 if (memcmp(&p->addr_max, &p->addr_min, p->addr_len) > 0) {
1381 nl_msg_put_unspec(actions, OVS_NAT_ATTR_IP_MAX, &p->addr_max,
1382 p->addr_len);
1383 }
1384 if (p->proto_min) {
1385 nl_msg_put_u16(actions, OVS_NAT_ATTR_PROTO_MIN, p->proto_min);
1386 if (p->proto_max && p->proto_max > p->proto_min) {
1387 nl_msg_put_u16(actions, OVS_NAT_ATTR_PROTO_MAX, p->proto_max);
1388 }
1389 }
1390 if (p->persistent) {
1391 nl_msg_put_flag(actions, OVS_NAT_ATTR_PERSISTENT);
1392 }
1393 if (p->proto_hash) {
1394 nl_msg_put_flag(actions, OVS_NAT_ATTR_PROTO_HASH);
1395 }
1396 if (p->proto_random) {
1397 nl_msg_put_flag(actions, OVS_NAT_ATTR_PROTO_RANDOM);
1398 }
1399 }
1400 out:
1401 nl_msg_end_nested(actions, start);
1402 }
1403
1404 static int
1405 parse_conntrack_action(const char *s_, struct ofpbuf *actions)
1406 {
1407 const char *s = s_;
1408
1409 if (ovs_scan(s, "ct")) {
1410 const char *helper = NULL;
1411 size_t helper_len = 0;
1412 bool commit = false;
1413 uint16_t zone = 0;
1414 struct {
1415 uint32_t value;
1416 uint32_t mask;
1417 } ct_mark = { 0, 0 };
1418 struct {
1419 ovs_u128 value;
1420 ovs_u128 mask;
1421 } ct_label;
1422 struct ct_nat_params nat_params;
1423 bool have_nat = false;
1424 size_t start;
1425 char *end;
1426
1427 memset(&ct_label, 0, sizeof(ct_label));
1428
1429 s += 2;
1430 if (ovs_scan(s, "(")) {
1431 s++;
1432 find_end:
1433 end = strchr(s, ')');
1434 if (!end) {
1435 return -EINVAL;
1436 }
1437
1438 while (s != end) {
1439 int n;
1440
1441 s += strspn(s, delimiters);
1442 if (ovs_scan(s, "commit%n", &n)) {
1443 commit = true;
1444 s += n;
1445 continue;
1446 }
1447 if (ovs_scan(s, "zone=%"SCNu16"%n", &zone, &n)) {
1448 s += n;
1449 continue;
1450 }
1451 if (ovs_scan(s, "mark=%"SCNx32"%n", &ct_mark.value, &n)) {
1452 s += n;
1453 n = -1;
1454 if (ovs_scan(s, "/%"SCNx32"%n", &ct_mark.mask, &n)) {
1455 s += n;
1456 } else {
1457 ct_mark.mask = UINT32_MAX;
1458 }
1459 continue;
1460 }
1461 if (ovs_scan(s, "label=%n", &n)) {
1462 int retval;
1463
1464 s += n;
1465 retval = scan_u128(s, &ct_label.value, &ct_label.mask);
1466 if (retval < 0) {
1467 return retval;
1468 }
1469 s += retval;
1470 continue;
1471 }
1472 if (ovs_scan(s, "helper=%n", &n)) {
1473 s += n;
1474 helper_len = strcspn(s, delimiters_end);
1475 if (!helper_len || helper_len > 15) {
1476 return -EINVAL;
1477 }
1478 helper = s;
1479 s += helper_len;
1480 continue;
1481 }
1482
1483 n = scan_ct_nat(s, &nat_params);
1484 if (n > 0) {
1485 s += n;
1486 have_nat = true;
1487
1488 /* end points to the end of the nested, nat action.
1489 * find the real end. */
1490 goto find_end;
1491 }
1492 /* Nothing matched. */
1493 return -EINVAL;
1494 }
1495 s++;
1496 }
1497
1498 start = nl_msg_start_nested(actions, OVS_ACTION_ATTR_CT);
1499 if (commit) {
1500 nl_msg_put_flag(actions, OVS_CT_ATTR_COMMIT);
1501 }
1502 if (zone) {
1503 nl_msg_put_u16(actions, OVS_CT_ATTR_ZONE, zone);
1504 }
1505 if (ct_mark.mask) {
1506 nl_msg_put_unspec(actions, OVS_CT_ATTR_MARK, &ct_mark,
1507 sizeof(ct_mark));
1508 }
1509 if (!ovs_u128_is_zero(ct_label.mask)) {
1510 nl_msg_put_unspec(actions, OVS_CT_ATTR_LABELS, &ct_label,
1511 sizeof ct_label);
1512 }
1513 if (helper) {
1514 nl_msg_put_string__(actions, OVS_CT_ATTR_HELPER, helper,
1515 helper_len);
1516 }
1517 if (have_nat) {
1518 nl_msg_put_ct_nat(&nat_params, actions);
1519 }
1520 nl_msg_end_nested(actions, start);
1521 }
1522
1523 return s - s_;
1524 }
1525
1526 static int
1527 parse_odp_action(const char *s, const struct simap *port_names,
1528 struct ofpbuf *actions)
1529 {
1530 {
1531 uint32_t port;
1532 int n;
1533
1534 if (ovs_scan(s, "%"SCNi32"%n", &port, &n)) {
1535 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
1536 return n;
1537 }
1538 }
1539
1540 {
1541 uint32_t max_len;
1542 int n;
1543
1544 if (ovs_scan(s, "trunc(%"SCNi32")%n", &max_len, &n)) {
1545 struct ovs_action_trunc *trunc;
1546
1547 trunc = nl_msg_put_unspec_uninit(actions,
1548 OVS_ACTION_ATTR_TRUNC, sizeof *trunc);
1549 trunc->max_len = max_len;
1550 return n;
1551 }
1552 }
1553
1554 if (port_names) {
1555 int len = strcspn(s, delimiters);
1556 struct simap_node *node;
1557
1558 node = simap_find_len(port_names, s, len);
1559 if (node) {
1560 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
1561 return len;
1562 }
1563 }
1564
1565 {
1566 uint32_t recirc_id;
1567 int n = -1;
1568
1569 if (ovs_scan(s, "recirc(%"PRIu32")%n", &recirc_id, &n)) {
1570 nl_msg_put_u32(actions, OVS_ACTION_ATTR_RECIRC, recirc_id);
1571 return n;
1572 }
1573 }
1574
1575 if (!strncmp(s, "userspace(", 10)) {
1576 return parse_odp_userspace_action(s, actions);
1577 }
1578
1579 if (!strncmp(s, "set(", 4)) {
1580 size_t start_ofs;
1581 int retval;
1582 struct nlattr mask[128 / sizeof(struct nlattr)];
1583 struct ofpbuf maskbuf;
1584 struct nlattr *nested, *key;
1585 size_t size;
1586
1587 /* 'mask' is big enough to hold any key. */
1588 ofpbuf_use_stack(&maskbuf, mask, sizeof mask);
1589
1590 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
1591 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, &maskbuf);
1592 if (retval < 0) {
1593 return retval;
1594 }
1595 if (s[retval + 4] != ')') {
1596 return -EINVAL;
1597 }
1598
1599 nested = ofpbuf_at_assert(actions, start_ofs, sizeof *nested);
1600 key = nested + 1;
1601
1602 size = nl_attr_get_size(mask);
1603 if (size == nl_attr_get_size(key)) {
1604 /* Change to masked set action if not fully masked. */
1605 if (!is_all_ones(mask + 1, size)) {
1606 key->nla_len += size;
1607 ofpbuf_put(actions, mask + 1, size);
1608 /* 'actions' may have been reallocated by ofpbuf_put(). */
1609 nested = ofpbuf_at_assert(actions, start_ofs, sizeof *nested);
1610 nested->nla_type = OVS_ACTION_ATTR_SET_MASKED;
1611 }
1612 }
1613
1614 nl_msg_end_nested(actions, start_ofs);
1615 return retval + 5;
1616 }
1617
1618 {
1619 struct ovs_action_push_vlan push;
1620 int tpid = ETH_TYPE_VLAN;
1621 int vid, pcp;
1622 int cfi = 1;
1623 int n = -1;
1624
1625 if (ovs_scan(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)
1626 || ovs_scan(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
1627 &vid, &pcp, &cfi, &n)
1628 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
1629 &tpid, &vid, &pcp, &n)
1630 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
1631 &tpid, &vid, &pcp, &cfi, &n)) {
1632 push.vlan_tpid = htons(tpid);
1633 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
1634 | (pcp << VLAN_PCP_SHIFT)
1635 | (cfi ? VLAN_CFI : 0));
1636 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
1637 &push, sizeof push);
1638
1639 return n;
1640 }
1641 }
1642
1643 if (!strncmp(s, "pop_vlan", 8)) {
1644 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
1645 return 8;
1646 }
1647
1648 {
1649 double percentage;
1650 int n = -1;
1651
1652 if (ovs_scan(s, "sample(sample=%lf%%,actions(%n", &percentage, &n)
1653 && percentage >= 0. && percentage <= 100.0) {
1654 size_t sample_ofs, actions_ofs;
1655 double probability;
1656
1657 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
1658 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
1659 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
1660 (probability <= 0 ? 0
1661 : probability >= UINT32_MAX ? UINT32_MAX
1662 : probability));
1663
1664 actions_ofs = nl_msg_start_nested(actions,
1665 OVS_SAMPLE_ATTR_ACTIONS);
1666 for (;;) {
1667 int retval;
1668
1669 n += strspn(s + n, delimiters);
1670 if (s[n] == ')') {
1671 break;
1672 }
1673
1674 retval = parse_odp_action(s + n, port_names, actions);
1675 if (retval < 0) {
1676 return retval;
1677 }
1678 n += retval;
1679 }
1680 nl_msg_end_nested(actions, actions_ofs);
1681 nl_msg_end_nested(actions, sample_ofs);
1682
1683 return s[n + 1] == ')' ? n + 2 : -EINVAL;
1684 }
1685 }
1686
1687 {
1688 uint32_t port;
1689 int n;
1690
1691 if (ovs_scan(s, "tnl_pop(%"SCNi32")%n", &port, &n)) {
1692 nl_msg_put_u32(actions, OVS_ACTION_ATTR_TUNNEL_POP, port);
1693 return n;
1694 }
1695 }
1696
1697 {
1698 int retval;
1699
1700 retval = parse_conntrack_action(s, actions);
1701 if (retval) {
1702 return retval;
1703 }
1704 }
1705
1706 {
1707 struct ovs_action_push_tnl data;
1708 int n;
1709
1710 n = ovs_parse_tnl_push(s, &data);
1711 if (n > 0) {
1712 odp_put_tnl_push_action(actions, &data);
1713 return n;
1714 } else if (n < 0) {
1715 return n;
1716 }
1717 }
1718 return -EINVAL;
1719 }
1720
1721 /* Parses the string representation of datapath actions, in the format output
1722 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
1723 * value. On success, the ODP actions are appended to 'actions' as a series of
1724 * Netlink attributes. On failure, no data is appended to 'actions'. Either
1725 * way, 'actions''s data might be reallocated. */
1726 int
1727 odp_actions_from_string(const char *s, const struct simap *port_names,
1728 struct ofpbuf *actions)
1729 {
1730 size_t old_size;
1731
1732 if (!strcasecmp(s, "drop")) {
1733 return 0;
1734 }
1735
1736 old_size = actions->size;
1737 for (;;) {
1738 int retval;
1739
1740 s += strspn(s, delimiters);
1741 if (!*s) {
1742 return 0;
1743 }
1744
1745 retval = parse_odp_action(s, port_names, actions);
1746 if (retval < 0 || !strchr(delimiters, s[retval])) {
1747 actions->size = old_size;
1748 return -retval;
1749 }
1750 s += retval;
1751 }
1752
1753 return 0;
1754 }
1755 \f
1756 static const struct attr_len_tbl ovs_vxlan_ext_attr_lens[OVS_VXLAN_EXT_MAX + 1] = {
1757 [OVS_VXLAN_EXT_GBP] = { .len = 4 },
1758 };
1759
1760 static const struct attr_len_tbl ovs_tun_key_attr_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = {
1761 [OVS_TUNNEL_KEY_ATTR_ID] = { .len = 8 },
1762 [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = 4 },
1763 [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = 4 },
1764 [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 },
1765 [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 },
1766 [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 },
1767 [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 },
1768 [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = 2 },
1769 [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = 2 },
1770 [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 },
1771 [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = ATTR_LEN_VARIABLE },
1772 [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = ATTR_LEN_NESTED,
1773 .next = ovs_vxlan_ext_attr_lens ,
1774 .next_max = OVS_VXLAN_EXT_MAX},
1775 [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = 16 },
1776 [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = 16 },
1777 };
1778
1779 static const struct attr_len_tbl ovs_flow_key_attr_lens[OVS_KEY_ATTR_MAX + 1] = {
1780 [OVS_KEY_ATTR_ENCAP] = { .len = ATTR_LEN_NESTED },
1781 [OVS_KEY_ATTR_PRIORITY] = { .len = 4 },
1782 [OVS_KEY_ATTR_SKB_MARK] = { .len = 4 },
1783 [OVS_KEY_ATTR_DP_HASH] = { .len = 4 },
1784 [OVS_KEY_ATTR_RECIRC_ID] = { .len = 4 },
1785 [OVS_KEY_ATTR_TUNNEL] = { .len = ATTR_LEN_NESTED,
1786 .next = ovs_tun_key_attr_lens,
1787 .next_max = OVS_TUNNEL_KEY_ATTR_MAX },
1788 [OVS_KEY_ATTR_IN_PORT] = { .len = 4 },
1789 [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) },
1790 [OVS_KEY_ATTR_VLAN] = { .len = 2 },
1791 [OVS_KEY_ATTR_ETHERTYPE] = { .len = 2 },
1792 [OVS_KEY_ATTR_MPLS] = { .len = ATTR_LEN_VARIABLE },
1793 [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) },
1794 [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) },
1795 [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) },
1796 [OVS_KEY_ATTR_TCP_FLAGS] = { .len = 2 },
1797 [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) },
1798 [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) },
1799 [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) },
1800 [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) },
1801 [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) },
1802 [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) },
1803 [OVS_KEY_ATTR_CT_STATE] = { .len = 4 },
1804 [OVS_KEY_ATTR_CT_ZONE] = { .len = 2 },
1805 [OVS_KEY_ATTR_CT_MARK] = { .len = 4 },
1806 [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) },
1807 };
1808
1809 /* Returns the correct length of the payload for a flow key attribute of the
1810 * specified 'type', ATTR_LEN_INVALID if 'type' is unknown, ATTR_LEN_VARIABLE
1811 * if the attribute's payload is variable length, or ATTR_LEN_NESTED if the
1812 * payload is a nested type. */
1813 static int
1814 odp_key_attr_len(const struct attr_len_tbl tbl[], int max_len, uint16_t type)
1815 {
1816 if (type > max_len) {
1817 return ATTR_LEN_INVALID;
1818 }
1819
1820 return tbl[type].len;
1821 }
1822
1823 static void
1824 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
1825 {
1826 size_t len = nl_attr_get_size(a);
1827 if (len) {
1828 const uint8_t *unspec;
1829 unsigned int i;
1830
1831 unspec = nl_attr_get(a);
1832 for (i = 0; i < len; i++) {
1833 if (i) {
1834 ds_put_char(ds, ' ');
1835 }
1836 ds_put_format(ds, "%02x", unspec[i]);
1837 }
1838 }
1839 }
1840
1841 static const char *
1842 ovs_frag_type_to_string(enum ovs_frag_type type)
1843 {
1844 switch (type) {
1845 case OVS_FRAG_TYPE_NONE:
1846 return "no";
1847 case OVS_FRAG_TYPE_FIRST:
1848 return "first";
1849 case OVS_FRAG_TYPE_LATER:
1850 return "later";
1851 case __OVS_FRAG_TYPE_MAX:
1852 default:
1853 return "<error>";
1854 }
1855 }
1856
1857 static enum odp_key_fitness
1858 odp_tun_key_from_attr__(const struct nlattr *attr,
1859 const struct nlattr *flow_attrs, size_t flow_attr_len,
1860 const struct flow_tnl *src_tun, struct flow_tnl *tun,
1861 bool udpif)
1862 {
1863 unsigned int left;
1864 const struct nlattr *a;
1865 bool ttl = false;
1866 bool unknown = false;
1867
1868 NL_NESTED_FOR_EACH(a, left, attr) {
1869 uint16_t type = nl_attr_type(a);
1870 size_t len = nl_attr_get_size(a);
1871 int expected_len = odp_key_attr_len(ovs_tun_key_attr_lens,
1872 OVS_TUNNEL_ATTR_MAX, type);
1873
1874 if (len != expected_len && expected_len >= 0) {
1875 return ODP_FIT_ERROR;
1876 }
1877
1878 switch (type) {
1879 case OVS_TUNNEL_KEY_ATTR_ID:
1880 tun->tun_id = nl_attr_get_be64(a);
1881 tun->flags |= FLOW_TNL_F_KEY;
1882 break;
1883 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
1884 tun->ip_src = nl_attr_get_be32(a);
1885 break;
1886 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
1887 tun->ip_dst = nl_attr_get_be32(a);
1888 break;
1889 case OVS_TUNNEL_KEY_ATTR_IPV6_SRC:
1890 tun->ipv6_src = nl_attr_get_in6_addr(a);
1891 break;
1892 case OVS_TUNNEL_KEY_ATTR_IPV6_DST:
1893 tun->ipv6_dst = nl_attr_get_in6_addr(a);
1894 break;
1895 case OVS_TUNNEL_KEY_ATTR_TOS:
1896 tun->ip_tos = nl_attr_get_u8(a);
1897 break;
1898 case OVS_TUNNEL_KEY_ATTR_TTL:
1899 tun->ip_ttl = nl_attr_get_u8(a);
1900 ttl = true;
1901 break;
1902 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
1903 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
1904 break;
1905 case OVS_TUNNEL_KEY_ATTR_CSUM:
1906 tun->flags |= FLOW_TNL_F_CSUM;
1907 break;
1908 case OVS_TUNNEL_KEY_ATTR_TP_SRC:
1909 tun->tp_src = nl_attr_get_be16(a);
1910 break;
1911 case OVS_TUNNEL_KEY_ATTR_TP_DST:
1912 tun->tp_dst = nl_attr_get_be16(a);
1913 break;
1914 case OVS_TUNNEL_KEY_ATTR_OAM:
1915 tun->flags |= FLOW_TNL_F_OAM;
1916 break;
1917 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: {
1918 static const struct nl_policy vxlan_opts_policy[] = {
1919 [OVS_VXLAN_EXT_GBP] = { .type = NL_A_U32 },
1920 };
1921 struct nlattr *ext[ARRAY_SIZE(vxlan_opts_policy)];
1922
1923 if (!nl_parse_nested(a, vxlan_opts_policy, ext, ARRAY_SIZE(ext))) {
1924 return ODP_FIT_ERROR;
1925 }
1926
1927 if (ext[OVS_VXLAN_EXT_GBP]) {
1928 uint32_t gbp = nl_attr_get_u32(ext[OVS_VXLAN_EXT_GBP]);
1929
1930 tun->gbp_id = htons(gbp & 0xFFFF);
1931 tun->gbp_flags = (gbp >> 16) & 0xFF;
1932 }
1933
1934 break;
1935 }
1936 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS:
1937 if (tun_metadata_from_geneve_nlattr(a, flow_attrs, flow_attr_len,
1938 src_tun, udpif, tun)) {
1939 return ODP_FIT_ERROR;
1940 }
1941 break;
1942
1943 default:
1944 /* Allow this to show up as unexpected, if there are unknown
1945 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
1946 unknown = true;
1947 break;
1948 }
1949 }
1950
1951 if (!ttl) {
1952 return ODP_FIT_ERROR;
1953 }
1954 if (unknown) {
1955 return ODP_FIT_TOO_MUCH;
1956 }
1957 return ODP_FIT_PERFECT;
1958 }
1959
1960 enum odp_key_fitness
1961 odp_tun_key_from_attr(const struct nlattr *attr, bool udpif,
1962 struct flow_tnl *tun)
1963 {
1964 memset(tun, 0, sizeof *tun);
1965 return odp_tun_key_from_attr__(attr, NULL, 0, NULL, tun, udpif);
1966 }
1967
1968 static void
1969 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key,
1970 const struct flow_tnl *tun_flow_key,
1971 const struct ofpbuf *key_buf)
1972 {
1973 size_t tun_key_ofs;
1974
1975 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
1976
1977 /* tun_id != 0 without FLOW_TNL_F_KEY is valid if tun_key is a mask. */
1978 if (tun_key->tun_id || tun_key->flags & FLOW_TNL_F_KEY) {
1979 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
1980 }
1981 if (tun_key->ip_src) {
1982 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
1983 }
1984 if (tun_key->ip_dst) {
1985 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
1986 }
1987 if (ipv6_addr_is_set(&tun_key->ipv6_src)) {
1988 nl_msg_put_in6_addr(a, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, &tun_key->ipv6_src);
1989 }
1990 if (ipv6_addr_is_set(&tun_key->ipv6_dst)) {
1991 nl_msg_put_in6_addr(a, OVS_TUNNEL_KEY_ATTR_IPV6_DST, &tun_key->ipv6_dst);
1992 }
1993 if (tun_key->ip_tos) {
1994 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
1995 }
1996 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
1997 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
1998 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
1999 }
2000 if (tun_key->flags & FLOW_TNL_F_CSUM) {
2001 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
2002 }
2003 if (tun_key->tp_src) {
2004 nl_msg_put_be16(a, OVS_TUNNEL_KEY_ATTR_TP_SRC, tun_key->tp_src);
2005 }
2006 if (tun_key->tp_dst) {
2007 nl_msg_put_be16(a, OVS_TUNNEL_KEY_ATTR_TP_DST, tun_key->tp_dst);
2008 }
2009 if (tun_key->flags & FLOW_TNL_F_OAM) {
2010 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_OAM);
2011 }
2012 if (tun_key->gbp_flags || tun_key->gbp_id) {
2013 size_t vxlan_opts_ofs;
2014
2015 vxlan_opts_ofs = nl_msg_start_nested(a, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS);
2016 nl_msg_put_u32(a, OVS_VXLAN_EXT_GBP,
2017 (tun_key->gbp_flags << 16) | ntohs(tun_key->gbp_id));
2018 nl_msg_end_nested(a, vxlan_opts_ofs);
2019 }
2020 tun_metadata_to_geneve_nlattr(tun_key, tun_flow_key, key_buf, a);
2021
2022 nl_msg_end_nested(a, tun_key_ofs);
2023 }
2024
2025 static bool
2026 odp_mask_attr_is_wildcard(const struct nlattr *ma)
2027 {
2028 return is_all_zeros(nl_attr_get(ma), nl_attr_get_size(ma));
2029 }
2030
2031 static bool
2032 odp_mask_is_exact(enum ovs_key_attr attr, const void *mask, size_t size)
2033 {
2034 if (attr == OVS_KEY_ATTR_TCP_FLAGS) {
2035 return TCP_FLAGS(*(ovs_be16 *)mask) == TCP_FLAGS(OVS_BE16_MAX);
2036 }
2037 if (attr == OVS_KEY_ATTR_IPV6) {
2038 const struct ovs_key_ipv6 *ipv6_mask = mask;
2039
2040 return
2041 ((ipv6_mask->ipv6_label & htonl(IPV6_LABEL_MASK))
2042 == htonl(IPV6_LABEL_MASK))
2043 && ipv6_mask->ipv6_proto == UINT8_MAX
2044 && ipv6_mask->ipv6_tclass == UINT8_MAX
2045 && ipv6_mask->ipv6_hlimit == UINT8_MAX
2046 && ipv6_mask->ipv6_frag == UINT8_MAX
2047 && ipv6_mask_is_exact((const struct in6_addr *)ipv6_mask->ipv6_src)
2048 && ipv6_mask_is_exact((const struct in6_addr *)ipv6_mask->ipv6_dst);
2049 }
2050 if (attr == OVS_KEY_ATTR_TUNNEL) {
2051 return false;
2052 }
2053
2054 if (attr == OVS_KEY_ATTR_ARP) {
2055 /* ARP key has padding, ignore it. */
2056 BUILD_ASSERT_DECL(sizeof(struct ovs_key_arp) == 24);
2057 BUILD_ASSERT_DECL(offsetof(struct ovs_key_arp, arp_tha) == 10 + 6);
2058 size = offsetof(struct ovs_key_arp, arp_tha) + ETH_ADDR_LEN;
2059 ovs_assert(((uint16_t *)mask)[size/2] == 0);
2060 }
2061
2062 return is_all_ones(mask, size);
2063 }
2064
2065 static bool
2066 odp_mask_attr_is_exact(const struct nlattr *ma)
2067 {
2068 enum ovs_key_attr attr = nl_attr_type(ma);
2069 const void *mask;
2070 size_t size;
2071
2072 if (attr == OVS_KEY_ATTR_TUNNEL) {
2073 return false;
2074 } else {
2075 mask = nl_attr_get(ma);
2076 size = nl_attr_get_size(ma);
2077 }
2078
2079 return odp_mask_is_exact(attr, mask, size);
2080 }
2081
2082 void
2083 odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no,
2084 char *port_name)
2085 {
2086 struct odp_portno_names *odp_portno_names;
2087
2088 odp_portno_names = xmalloc(sizeof *odp_portno_names);
2089 odp_portno_names->port_no = port_no;
2090 odp_portno_names->name = xstrdup(port_name);
2091 hmap_insert(portno_names, &odp_portno_names->hmap_node,
2092 hash_odp_port(port_no));
2093 }
2094
2095 static char *
2096 odp_portno_names_get(const struct hmap *portno_names, odp_port_t port_no)
2097 {
2098 struct odp_portno_names *odp_portno_names;
2099
2100 HMAP_FOR_EACH_IN_BUCKET (odp_portno_names, hmap_node,
2101 hash_odp_port(port_no), portno_names) {
2102 if (odp_portno_names->port_no == port_no) {
2103 return odp_portno_names->name;
2104 }
2105 }
2106 return NULL;
2107 }
2108
2109 void
2110 odp_portno_names_destroy(struct hmap *portno_names)
2111 {
2112 struct odp_portno_names *odp_portno_names;
2113
2114 HMAP_FOR_EACH_POP (odp_portno_names, hmap_node, portno_names) {
2115 free(odp_portno_names->name);
2116 free(odp_portno_names);
2117 }
2118 }
2119
2120 /* Format helpers. */
2121
2122 static void
2123 format_eth(struct ds *ds, const char *name, const struct eth_addr key,
2124 const struct eth_addr *mask, bool verbose)
2125 {
2126 bool mask_empty = mask && eth_addr_is_zero(*mask);
2127
2128 if (verbose || !mask_empty) {
2129 bool mask_full = !mask || eth_mask_is_exact(*mask);
2130
2131 if (mask_full) {
2132 ds_put_format(ds, "%s="ETH_ADDR_FMT",", name, ETH_ADDR_ARGS(key));
2133 } else {
2134 ds_put_format(ds, "%s=", name);
2135 eth_format_masked(key, mask, ds);
2136 ds_put_char(ds, ',');
2137 }
2138 }
2139 }
2140
2141 static void
2142 format_be64(struct ds *ds, const char *name, ovs_be64 key,
2143 const ovs_be64 *mask, bool verbose)
2144 {
2145 bool mask_empty = mask && !*mask;
2146
2147 if (verbose || !mask_empty) {
2148 bool mask_full = !mask || *mask == OVS_BE64_MAX;
2149
2150 ds_put_format(ds, "%s=0x%"PRIx64, name, ntohll(key));
2151 if (!mask_full) { /* Partially masked. */
2152 ds_put_format(ds, "/%#"PRIx64, ntohll(*mask));
2153 }
2154 ds_put_char(ds, ',');
2155 }
2156 }
2157
2158 static void
2159 format_ipv4(struct ds *ds, const char *name, ovs_be32 key,
2160 const ovs_be32 *mask, bool verbose)
2161 {
2162 bool mask_empty = mask && !*mask;
2163
2164 if (verbose || !mask_empty) {
2165 bool mask_full = !mask || *mask == OVS_BE32_MAX;
2166
2167 ds_put_format(ds, "%s="IP_FMT, name, IP_ARGS(key));
2168 if (!mask_full) { /* Partially masked. */
2169 ds_put_format(ds, "/"IP_FMT, IP_ARGS(*mask));
2170 }
2171 ds_put_char(ds, ',');
2172 }
2173 }
2174
2175 static void
2176 format_in6_addr(struct ds *ds, const char *name,
2177 const struct in6_addr *key,
2178 const struct in6_addr *mask,
2179 bool verbose)
2180 {
2181 char buf[INET6_ADDRSTRLEN];
2182 bool mask_empty = mask && ipv6_mask_is_any(mask);
2183
2184 if (verbose || !mask_empty) {
2185 bool mask_full = !mask || ipv6_mask_is_exact(mask);
2186
2187 inet_ntop(AF_INET6, key, buf, sizeof buf);
2188 ds_put_format(ds, "%s=%s", name, buf);
2189 if (!mask_full) { /* Partially masked. */
2190 inet_ntop(AF_INET6, mask, buf, sizeof buf);
2191 ds_put_format(ds, "/%s", buf);
2192 }
2193 ds_put_char(ds, ',');
2194 }
2195 }
2196
2197 static void
2198 format_ipv6(struct ds *ds, const char *name, const ovs_be32 key_[4],
2199 const ovs_be32 (*mask_)[4], bool verbose)
2200 {
2201 format_in6_addr(ds, name,
2202 (const struct in6_addr *)key_,
2203 mask_ ? (const struct in6_addr *)*mask_ : NULL,
2204 verbose);
2205 }
2206
2207 static void
2208 format_ipv6_label(struct ds *ds, const char *name, ovs_be32 key,
2209 const ovs_be32 *mask, bool verbose)
2210 {
2211 bool mask_empty = mask && !*mask;
2212
2213 if (verbose || !mask_empty) {
2214 bool mask_full = !mask
2215 || (*mask & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK);
2216
2217 ds_put_format(ds, "%s=%#"PRIx32, name, ntohl(key));
2218 if (!mask_full) { /* Partially masked. */
2219 ds_put_format(ds, "/%#"PRIx32, ntohl(*mask));
2220 }
2221 ds_put_char(ds, ',');
2222 }
2223 }
2224
2225 static void
2226 format_u8x(struct ds *ds, const char *name, uint8_t key,
2227 const uint8_t *mask, bool verbose)
2228 {
2229 bool mask_empty = mask && !*mask;
2230
2231 if (verbose || !mask_empty) {
2232 bool mask_full = !mask || *mask == UINT8_MAX;
2233
2234 ds_put_format(ds, "%s=%#"PRIx8, name, key);
2235 if (!mask_full) { /* Partially masked. */
2236 ds_put_format(ds, "/%#"PRIx8, *mask);
2237 }
2238 ds_put_char(ds, ',');
2239 }
2240 }
2241
2242 static void
2243 format_u8u(struct ds *ds, const char *name, uint8_t key,
2244 const uint8_t *mask, bool verbose)
2245 {
2246 bool mask_empty = mask && !*mask;
2247
2248 if (verbose || !mask_empty) {
2249 bool mask_full = !mask || *mask == UINT8_MAX;
2250
2251 ds_put_format(ds, "%s=%"PRIu8, name, key);
2252 if (!mask_full) { /* Partially masked. */
2253 ds_put_format(ds, "/%#"PRIx8, *mask);
2254 }
2255 ds_put_char(ds, ',');
2256 }
2257 }
2258
2259 static void
2260 format_be16(struct ds *ds, const char *name, ovs_be16 key,
2261 const ovs_be16 *mask, bool verbose)
2262 {
2263 bool mask_empty = mask && !*mask;
2264
2265 if (verbose || !mask_empty) {
2266 bool mask_full = !mask || *mask == OVS_BE16_MAX;
2267
2268 ds_put_format(ds, "%s=%"PRIu16, name, ntohs(key));
2269 if (!mask_full) { /* Partially masked. */
2270 ds_put_format(ds, "/%#"PRIx16, ntohs(*mask));
2271 }
2272 ds_put_char(ds, ',');
2273 }
2274 }
2275
2276 static void
2277 format_be16x(struct ds *ds, const char *name, ovs_be16 key,
2278 const ovs_be16 *mask, bool verbose)
2279 {
2280 bool mask_empty = mask && !*mask;
2281
2282 if (verbose || !mask_empty) {
2283 bool mask_full = !mask || *mask == OVS_BE16_MAX;
2284
2285 ds_put_format(ds, "%s=%#"PRIx16, name, ntohs(key));
2286 if (!mask_full) { /* Partially masked. */
2287 ds_put_format(ds, "/%#"PRIx16, ntohs(*mask));
2288 }
2289 ds_put_char(ds, ',');
2290 }
2291 }
2292
2293 static void
2294 format_tun_flags(struct ds *ds, const char *name, uint16_t key,
2295 const uint16_t *mask, bool verbose)
2296 {
2297 bool mask_empty = mask && !*mask;
2298
2299 if (verbose || !mask_empty) {
2300 ds_put_cstr(ds, name);
2301 ds_put_char(ds, '(');
2302 if (mask) {
2303 format_flags_masked(ds, NULL, flow_tun_flag_to_string, key,
2304 *mask & FLOW_TNL_F_MASK, FLOW_TNL_F_MASK);
2305 } else { /* Fully masked. */
2306 format_flags(ds, flow_tun_flag_to_string, key, '|');
2307 }
2308 ds_put_cstr(ds, "),");
2309 }
2310 }
2311
2312 static bool
2313 check_attr_len(struct ds *ds, const struct nlattr *a, const struct nlattr *ma,
2314 const struct attr_len_tbl tbl[], int max_len, bool need_key)
2315 {
2316 int expected_len;
2317
2318 expected_len = odp_key_attr_len(tbl, max_len, nl_attr_type(a));
2319 if (expected_len != ATTR_LEN_VARIABLE &&
2320 expected_len != ATTR_LEN_NESTED) {
2321
2322 bool bad_key_len = nl_attr_get_size(a) != expected_len;
2323 bool bad_mask_len = ma && nl_attr_get_size(ma) != expected_len;
2324
2325 if (bad_key_len || bad_mask_len) {
2326 if (need_key) {
2327 ds_put_format(ds, "key%u", nl_attr_type(a));
2328 }
2329 if (bad_key_len) {
2330 ds_put_format(ds, "(bad key length %"PRIuSIZE", expected %d)(",
2331 nl_attr_get_size(a), expected_len);
2332 }
2333 format_generic_odp_key(a, ds);
2334 if (ma) {
2335 ds_put_char(ds, '/');
2336 if (bad_mask_len) {
2337 ds_put_format(ds, "(bad mask length %"PRIuSIZE", expected %d)(",
2338 nl_attr_get_size(ma), expected_len);
2339 }
2340 format_generic_odp_key(ma, ds);
2341 }
2342 ds_put_char(ds, ')');
2343 return false;
2344 }
2345 }
2346
2347 return true;
2348 }
2349
2350 static void
2351 format_unknown_key(struct ds *ds, const struct nlattr *a,
2352 const struct nlattr *ma)
2353 {
2354 ds_put_format(ds, "key%u(", nl_attr_type(a));
2355 format_generic_odp_key(a, ds);
2356 if (ma && !odp_mask_attr_is_exact(ma)) {
2357 ds_put_char(ds, '/');
2358 format_generic_odp_key(ma, ds);
2359 }
2360 ds_put_cstr(ds, "),");
2361 }
2362
2363 static void
2364 format_odp_tun_vxlan_opt(const struct nlattr *attr,
2365 const struct nlattr *mask_attr, struct ds *ds,
2366 bool verbose)
2367 {
2368 unsigned int left;
2369 const struct nlattr *a;
2370 struct ofpbuf ofp;
2371
2372 ofpbuf_init(&ofp, 100);
2373 NL_NESTED_FOR_EACH(a, left, attr) {
2374 uint16_t type = nl_attr_type(a);
2375 const struct nlattr *ma = NULL;
2376
2377 if (mask_attr) {
2378 ma = nl_attr_find__(nl_attr_get(mask_attr),
2379 nl_attr_get_size(mask_attr), type);
2380 if (!ma) {
2381 ma = generate_all_wildcard_mask(ovs_vxlan_ext_attr_lens,
2382 OVS_VXLAN_EXT_MAX,
2383 &ofp, a);
2384 }
2385 }
2386
2387 if (!check_attr_len(ds, a, ma, ovs_vxlan_ext_attr_lens,
2388 OVS_VXLAN_EXT_MAX, true)) {
2389 continue;
2390 }
2391
2392 switch (type) {
2393 case OVS_VXLAN_EXT_GBP: {
2394 uint32_t key = nl_attr_get_u32(a);
2395 ovs_be16 id, id_mask;
2396 uint8_t flags, flags_mask = 0;
2397
2398 id = htons(key & 0xFFFF);
2399 flags = (key >> 16) & 0xFF;
2400 if (ma) {
2401 uint32_t mask = nl_attr_get_u32(ma);
2402 id_mask = htons(mask & 0xFFFF);
2403 flags_mask = (mask >> 16) & 0xFF;
2404 }
2405
2406 ds_put_cstr(ds, "gbp(");
2407 format_be16(ds, "id", id, ma ? &id_mask : NULL, verbose);
2408 format_u8x(ds, "flags", flags, ma ? &flags_mask : NULL, verbose);
2409 ds_chomp(ds, ',');
2410 ds_put_cstr(ds, "),");
2411 break;
2412 }
2413
2414 default:
2415 format_unknown_key(ds, a, ma);
2416 }
2417 ofpbuf_clear(&ofp);
2418 }
2419
2420 ds_chomp(ds, ',');
2421 ofpbuf_uninit(&ofp);
2422 }
2423
2424 #define MASK(PTR, FIELD) PTR ? &PTR->FIELD : NULL
2425
2426 static void
2427 format_geneve_opts(const struct geneve_opt *opt,
2428 const struct geneve_opt *mask, int opts_len,
2429 struct ds *ds, bool verbose)
2430 {
2431 while (opts_len > 0) {
2432 unsigned int len;
2433 uint8_t data_len, data_len_mask;
2434
2435 if (opts_len < sizeof *opt) {
2436 ds_put_format(ds, "opt len %u less than minimum %"PRIuSIZE,
2437 opts_len, sizeof *opt);
2438 return;
2439 }
2440
2441 data_len = opt->length * 4;
2442 if (mask) {
2443 if (mask->length == 0x1f) {
2444 data_len_mask = UINT8_MAX;
2445 } else {
2446 data_len_mask = mask->length;
2447 }
2448 }
2449 len = sizeof *opt + data_len;
2450 if (len > opts_len) {
2451 ds_put_format(ds, "opt len %u greater than remaining %u",
2452 len, opts_len);
2453 return;
2454 }
2455
2456 ds_put_char(ds, '{');
2457 format_be16x(ds, "class", opt->opt_class, MASK(mask, opt_class),
2458 verbose);
2459 format_u8x(ds, "type", opt->type, MASK(mask, type), verbose);
2460 format_u8u(ds, "len", data_len, mask ? &data_len_mask : NULL, verbose);
2461 if (data_len &&
2462 (verbose || !mask || !is_all_zeros(mask + 1, data_len))) {
2463 ds_put_hex(ds, opt + 1, data_len);
2464 if (mask && !is_all_ones(mask + 1, data_len)) {
2465 ds_put_char(ds, '/');
2466 ds_put_hex(ds, mask + 1, data_len);
2467 }
2468 } else {
2469 ds_chomp(ds, ',');
2470 }
2471 ds_put_char(ds, '}');
2472
2473 opt += len / sizeof(*opt);
2474 if (mask) {
2475 mask += len / sizeof(*opt);
2476 }
2477 opts_len -= len;
2478 };
2479 }
2480
2481 static void
2482 format_odp_tun_geneve(const struct nlattr *attr,
2483 const struct nlattr *mask_attr, struct ds *ds,
2484 bool verbose)
2485 {
2486 int opts_len = nl_attr_get_size(attr);
2487 const struct geneve_opt *opt = nl_attr_get(attr);
2488 const struct geneve_opt *mask = mask_attr ?
2489 nl_attr_get(mask_attr) : NULL;
2490
2491 if (mask && nl_attr_get_size(attr) != nl_attr_get_size(mask_attr)) {
2492 ds_put_format(ds, "value len %"PRIuSIZE" different from mask len %"PRIuSIZE,
2493 nl_attr_get_size(attr), nl_attr_get_size(mask_attr));
2494 return;
2495 }
2496
2497 format_geneve_opts(opt, mask, opts_len, ds, verbose);
2498 }
2499
2500 static void
2501 format_odp_tun_attr(const struct nlattr *attr, const struct nlattr *mask_attr,
2502 struct ds *ds, bool verbose)
2503 {
2504 unsigned int left;
2505 const struct nlattr *a;
2506 uint16_t flags = 0;
2507 uint16_t mask_flags = 0;
2508 struct ofpbuf ofp;
2509
2510 ofpbuf_init(&ofp, 100);
2511 NL_NESTED_FOR_EACH(a, left, attr) {
2512 enum ovs_tunnel_key_attr type = nl_attr_type(a);
2513 const struct nlattr *ma = NULL;
2514
2515 if (mask_attr) {
2516 ma = nl_attr_find__(nl_attr_get(mask_attr),
2517 nl_attr_get_size(mask_attr), type);
2518 if (!ma) {
2519 ma = generate_all_wildcard_mask(ovs_tun_key_attr_lens,
2520 OVS_TUNNEL_KEY_ATTR_MAX,
2521 &ofp, a);
2522 }
2523 }
2524
2525 if (!check_attr_len(ds, a, ma, ovs_tun_key_attr_lens,
2526 OVS_TUNNEL_KEY_ATTR_MAX, true)) {
2527 continue;
2528 }
2529
2530 switch (type) {
2531 case OVS_TUNNEL_KEY_ATTR_ID:
2532 format_be64(ds, "tun_id", nl_attr_get_be64(a),
2533 ma ? nl_attr_get(ma) : NULL, verbose);
2534 flags |= FLOW_TNL_F_KEY;
2535 if (ma) {
2536 mask_flags |= FLOW_TNL_F_KEY;
2537 }
2538 break;
2539 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
2540 format_ipv4(ds, "src", nl_attr_get_be32(a),
2541 ma ? nl_attr_get(ma) : NULL, verbose);
2542 break;
2543 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
2544 format_ipv4(ds, "dst", nl_attr_get_be32(a),
2545 ma ? nl_attr_get(ma) : NULL, verbose);
2546 break;
2547 case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: {
2548 struct in6_addr ipv6_src;
2549 ipv6_src = nl_attr_get_in6_addr(a);
2550 format_in6_addr(ds, "ipv6_src", &ipv6_src,
2551 ma ? nl_attr_get(ma) : NULL, verbose);
2552 break;
2553 }
2554 case OVS_TUNNEL_KEY_ATTR_IPV6_DST: {
2555 struct in6_addr ipv6_dst;
2556 ipv6_dst = nl_attr_get_in6_addr(a);
2557 format_in6_addr(ds, "ipv6_dst", &ipv6_dst,
2558 ma ? nl_attr_get(ma) : NULL, verbose);
2559 break;
2560 }
2561 case OVS_TUNNEL_KEY_ATTR_TOS:
2562 format_u8x(ds, "tos", nl_attr_get_u8(a),
2563 ma ? nl_attr_get(ma) : NULL, verbose);
2564 break;
2565 case OVS_TUNNEL_KEY_ATTR_TTL:
2566 format_u8u(ds, "ttl", nl_attr_get_u8(a),
2567 ma ? nl_attr_get(ma) : NULL, verbose);
2568 break;
2569 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
2570 flags |= FLOW_TNL_F_DONT_FRAGMENT;
2571 break;
2572 case OVS_TUNNEL_KEY_ATTR_CSUM:
2573 flags |= FLOW_TNL_F_CSUM;
2574 break;
2575 case OVS_TUNNEL_KEY_ATTR_TP_SRC:
2576 format_be16(ds, "tp_src", nl_attr_get_be16(a),
2577 ma ? nl_attr_get(ma) : NULL, verbose);
2578 break;
2579 case OVS_TUNNEL_KEY_ATTR_TP_DST:
2580 format_be16(ds, "tp_dst", nl_attr_get_be16(a),
2581 ma ? nl_attr_get(ma) : NULL, verbose);
2582 break;
2583 case OVS_TUNNEL_KEY_ATTR_OAM:
2584 flags |= FLOW_TNL_F_OAM;
2585 break;
2586 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS:
2587 ds_put_cstr(ds, "vxlan(");
2588 format_odp_tun_vxlan_opt(a, ma, ds, verbose);
2589 ds_put_cstr(ds, "),");
2590 break;
2591 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS:
2592 ds_put_cstr(ds, "geneve(");
2593 format_odp_tun_geneve(a, ma, ds, verbose);
2594 ds_put_cstr(ds, "),");
2595 break;
2596 case __OVS_TUNNEL_KEY_ATTR_MAX:
2597 default:
2598 format_unknown_key(ds, a, ma);
2599 }
2600 ofpbuf_clear(&ofp);
2601 }
2602
2603 /* Flags can have a valid mask even if the attribute is not set, so
2604 * we need to collect these separately. */
2605 if (mask_attr) {
2606 NL_NESTED_FOR_EACH(a, left, mask_attr) {
2607 switch (nl_attr_type(a)) {
2608 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
2609 mask_flags |= FLOW_TNL_F_DONT_FRAGMENT;
2610 break;
2611 case OVS_TUNNEL_KEY_ATTR_CSUM:
2612 mask_flags |= FLOW_TNL_F_CSUM;
2613 break;
2614 case OVS_TUNNEL_KEY_ATTR_OAM:
2615 mask_flags |= FLOW_TNL_F_OAM;
2616 break;
2617 }
2618 }
2619 }
2620
2621 format_tun_flags(ds, "flags", flags, mask_attr ? &mask_flags : NULL,
2622 verbose);
2623 ds_chomp(ds, ',');
2624 ofpbuf_uninit(&ofp);
2625 }
2626
2627 static const char *
2628 odp_ct_state_to_string(uint32_t flag)
2629 {
2630 switch (flag) {
2631 case OVS_CS_F_REPLY_DIR:
2632 return "rpl";
2633 case OVS_CS_F_TRACKED:
2634 return "trk";
2635 case OVS_CS_F_NEW:
2636 return "new";
2637 case OVS_CS_F_ESTABLISHED:
2638 return "est";
2639 case OVS_CS_F_RELATED:
2640 return "rel";
2641 case OVS_CS_F_INVALID:
2642 return "inv";
2643 case OVS_CS_F_SRC_NAT:
2644 return "snat";
2645 case OVS_CS_F_DST_NAT:
2646 return "dnat";
2647 default:
2648 return NULL;
2649 }
2650 }
2651
2652 static void
2653 format_frag(struct ds *ds, const char *name, uint8_t key,
2654 const uint8_t *mask, bool verbose)
2655 {
2656 bool mask_empty = mask && !*mask;
2657
2658 /* ODP frag is an enumeration field; partial masks are not meaningful. */
2659 if (verbose || !mask_empty) {
2660 bool mask_full = !mask || *mask == UINT8_MAX;
2661
2662 if (!mask_full) { /* Partially masked. */
2663 ds_put_format(ds, "error: partial mask not supported for frag (%#"
2664 PRIx8"),", *mask);
2665 } else {
2666 ds_put_format(ds, "%s=%s,", name, ovs_frag_type_to_string(key));
2667 }
2668 }
2669 }
2670
2671 static bool
2672 mask_empty(const struct nlattr *ma)
2673 {
2674 const void *mask;
2675 size_t n;
2676
2677 if (!ma) {
2678 return true;
2679 }
2680 mask = nl_attr_get(ma);
2681 n = nl_attr_get_size(ma);
2682
2683 return is_all_zeros(mask, n);
2684 }
2685
2686 static void
2687 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
2688 const struct hmap *portno_names, struct ds *ds,
2689 bool verbose)
2690 {
2691 enum ovs_key_attr attr = nl_attr_type(a);
2692 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2693 bool is_exact;
2694
2695 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
2696
2697 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
2698
2699 if (!check_attr_len(ds, a, ma, ovs_flow_key_attr_lens,
2700 OVS_KEY_ATTR_MAX, false)) {
2701 return;
2702 }
2703
2704 ds_put_char(ds, '(');
2705 switch (attr) {
2706 case OVS_KEY_ATTR_ENCAP:
2707 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
2708 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
2709 nl_attr_get(ma), nl_attr_get_size(ma), NULL, ds,
2710 verbose);
2711 } else if (nl_attr_get_size(a)) {
2712 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, NULL,
2713 ds, verbose);
2714 }
2715 break;
2716
2717 case OVS_KEY_ATTR_PRIORITY:
2718 case OVS_KEY_ATTR_SKB_MARK:
2719 case OVS_KEY_ATTR_DP_HASH:
2720 case OVS_KEY_ATTR_RECIRC_ID:
2721 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
2722 if (!is_exact) {
2723 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
2724 }
2725 break;
2726
2727 case OVS_KEY_ATTR_CT_MARK:
2728 if (verbose || !mask_empty(ma)) {
2729 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
2730 if (!is_exact) {
2731 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
2732 }
2733 }
2734 break;
2735
2736 case OVS_KEY_ATTR_CT_STATE:
2737 if (verbose) {
2738 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
2739 if (!is_exact) {
2740 ds_put_format(ds, "/%#"PRIx32,
2741 mask_empty(ma) ? 0 : nl_attr_get_u32(ma));
2742 }
2743 } else if (!is_exact) {
2744 format_flags_masked(ds, NULL, odp_ct_state_to_string,
2745 nl_attr_get_u32(a),
2746 mask_empty(ma) ? 0 : nl_attr_get_u32(ma),
2747 UINT32_MAX);
2748 } else {
2749 format_flags(ds, odp_ct_state_to_string, nl_attr_get_u32(a), '|');
2750 }
2751 break;
2752
2753 case OVS_KEY_ATTR_CT_ZONE:
2754 if (verbose || !mask_empty(ma)) {
2755 ds_put_format(ds, "%#"PRIx16, nl_attr_get_u16(a));
2756 if (!is_exact) {
2757 ds_put_format(ds, "/%#"PRIx16, nl_attr_get_u16(ma));
2758 }
2759 }
2760 break;
2761
2762 case OVS_KEY_ATTR_CT_LABELS: {
2763 const ovs_u128 *value = nl_attr_get(a);
2764 const ovs_u128 *mask = ma ? nl_attr_get(ma) : NULL;
2765
2766 format_u128(ds, value, mask, verbose);
2767 break;
2768 }
2769
2770 case OVS_KEY_ATTR_TUNNEL:
2771 format_odp_tun_attr(a, ma, ds, verbose);
2772 break;
2773
2774 case OVS_KEY_ATTR_IN_PORT:
2775 if (portno_names && verbose && is_exact) {
2776 char *name = odp_portno_names_get(portno_names,
2777 u32_to_odp(nl_attr_get_u32(a)));
2778 if (name) {
2779 ds_put_format(ds, "%s", name);
2780 } else {
2781 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
2782 }
2783 } else {
2784 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
2785 if (!is_exact) {
2786 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
2787 }
2788 }
2789 break;
2790
2791 case OVS_KEY_ATTR_ETHERNET: {
2792 const struct ovs_key_ethernet *mask = ma ? nl_attr_get(ma) : NULL;
2793 const struct ovs_key_ethernet *key = nl_attr_get(a);
2794
2795 format_eth(ds, "src", key->eth_src, MASK(mask, eth_src), verbose);
2796 format_eth(ds, "dst", key->eth_dst, MASK(mask, eth_dst), verbose);
2797 ds_chomp(ds, ',');
2798 break;
2799 }
2800 case OVS_KEY_ATTR_VLAN:
2801 format_vlan_tci(ds, nl_attr_get_be16(a),
2802 ma ? nl_attr_get_be16(ma) : OVS_BE16_MAX, verbose);
2803 break;
2804
2805 case OVS_KEY_ATTR_MPLS: {
2806 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
2807 const struct ovs_key_mpls *mpls_mask = NULL;
2808 size_t size = nl_attr_get_size(a);
2809
2810 if (!size || size % sizeof *mpls_key) {
2811 ds_put_format(ds, "(bad key length %"PRIuSIZE")", size);
2812 return;
2813 }
2814 if (!is_exact) {
2815 mpls_mask = nl_attr_get(ma);
2816 if (size != nl_attr_get_size(ma)) {
2817 ds_put_format(ds, "(key length %"PRIuSIZE" != "
2818 "mask length %"PRIuSIZE")",
2819 size, nl_attr_get_size(ma));
2820 return;
2821 }
2822 }
2823 format_mpls(ds, mpls_key, mpls_mask, size / sizeof *mpls_key);
2824 break;
2825 }
2826 case OVS_KEY_ATTR_ETHERTYPE:
2827 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
2828 if (!is_exact) {
2829 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
2830 }
2831 break;
2832
2833 case OVS_KEY_ATTR_IPV4: {
2834 const struct ovs_key_ipv4 *key = nl_attr_get(a);
2835 const struct ovs_key_ipv4 *mask = ma ? nl_attr_get(ma) : NULL;
2836
2837 format_ipv4(ds, "src", key->ipv4_src, MASK(mask, ipv4_src), verbose);
2838 format_ipv4(ds, "dst", key->ipv4_dst, MASK(mask, ipv4_dst), verbose);
2839 format_u8u(ds, "proto", key->ipv4_proto, MASK(mask, ipv4_proto),
2840 verbose);
2841 format_u8x(ds, "tos", key->ipv4_tos, MASK(mask, ipv4_tos), verbose);
2842 format_u8u(ds, "ttl", key->ipv4_ttl, MASK(mask, ipv4_ttl), verbose);
2843 format_frag(ds, "frag", key->ipv4_frag, MASK(mask, ipv4_frag),
2844 verbose);
2845 ds_chomp(ds, ',');
2846 break;
2847 }
2848 case OVS_KEY_ATTR_IPV6: {
2849 const struct ovs_key_ipv6 *key = nl_attr_get(a);
2850 const struct ovs_key_ipv6 *mask = ma ? nl_attr_get(ma) : NULL;
2851
2852 format_ipv6(ds, "src", key->ipv6_src, MASK(mask, ipv6_src), verbose);
2853 format_ipv6(ds, "dst", key->ipv6_dst, MASK(mask, ipv6_dst), verbose);
2854 format_ipv6_label(ds, "label", key->ipv6_label, MASK(mask, ipv6_label),
2855 verbose);
2856 format_u8u(ds, "proto", key->ipv6_proto, MASK(mask, ipv6_proto),
2857 verbose);
2858 format_u8x(ds, "tclass", key->ipv6_tclass, MASK(mask, ipv6_tclass),
2859 verbose);
2860 format_u8u(ds, "hlimit", key->ipv6_hlimit, MASK(mask, ipv6_hlimit),
2861 verbose);
2862 format_frag(ds, "frag", key->ipv6_frag, MASK(mask, ipv6_frag),
2863 verbose);
2864 ds_chomp(ds, ',');
2865 break;
2866 }
2867 /* These have the same structure and format. */
2868 case OVS_KEY_ATTR_TCP:
2869 case OVS_KEY_ATTR_UDP:
2870 case OVS_KEY_ATTR_SCTP: {
2871 const struct ovs_key_tcp *key = nl_attr_get(a);
2872 const struct ovs_key_tcp *mask = ma ? nl_attr_get(ma) : NULL;
2873
2874 format_be16(ds, "src", key->tcp_src, MASK(mask, tcp_src), verbose);
2875 format_be16(ds, "dst", key->tcp_dst, MASK(mask, tcp_dst), verbose);
2876 ds_chomp(ds, ',');
2877 break;
2878 }
2879 case OVS_KEY_ATTR_TCP_FLAGS:
2880 if (!is_exact) {
2881 format_flags_masked(ds, NULL, packet_tcp_flag_to_string,
2882 ntohs(nl_attr_get_be16(a)),
2883 TCP_FLAGS(nl_attr_get_be16(ma)),
2884 TCP_FLAGS(OVS_BE16_MAX));
2885 } else {
2886 format_flags(ds, packet_tcp_flag_to_string,
2887 ntohs(nl_attr_get_be16(a)), '|');
2888 }
2889 break;
2890
2891 case OVS_KEY_ATTR_ICMP: {
2892 const struct ovs_key_icmp *key = nl_attr_get(a);
2893 const struct ovs_key_icmp *mask = ma ? nl_attr_get(ma) : NULL;
2894
2895 format_u8u(ds, "type", key->icmp_type, MASK(mask, icmp_type), verbose);
2896 format_u8u(ds, "code", key->icmp_code, MASK(mask, icmp_code), verbose);
2897 ds_chomp(ds, ',');
2898 break;
2899 }
2900 case OVS_KEY_ATTR_ICMPV6: {
2901 const struct ovs_key_icmpv6 *key = nl_attr_get(a);
2902 const struct ovs_key_icmpv6 *mask = ma ? nl_attr_get(ma) : NULL;
2903
2904 format_u8u(ds, "type", key->icmpv6_type, MASK(mask, icmpv6_type),
2905 verbose);
2906 format_u8u(ds, "code", key->icmpv6_code, MASK(mask, icmpv6_code),
2907 verbose);
2908 ds_chomp(ds, ',');
2909 break;
2910 }
2911 case OVS_KEY_ATTR_ARP: {
2912 const struct ovs_key_arp *mask = ma ? nl_attr_get(ma) : NULL;
2913 const struct ovs_key_arp *key = nl_attr_get(a);
2914
2915 format_ipv4(ds, "sip", key->arp_sip, MASK(mask, arp_sip), verbose);
2916 format_ipv4(ds, "tip", key->arp_tip, MASK(mask, arp_tip), verbose);
2917 format_be16(ds, "op", key->arp_op, MASK(mask, arp_op), verbose);
2918 format_eth(ds, "sha", key->arp_sha, MASK(mask, arp_sha), verbose);
2919 format_eth(ds, "tha", key->arp_tha, MASK(mask, arp_tha), verbose);
2920 ds_chomp(ds, ',');
2921 break;
2922 }
2923 case OVS_KEY_ATTR_ND: {
2924 const struct ovs_key_nd *mask = ma ? nl_attr_get(ma) : NULL;
2925 const struct ovs_key_nd *key = nl_attr_get(a);
2926
2927 format_ipv6(ds, "target", key->nd_target, MASK(mask, nd_target),
2928 verbose);
2929 format_eth(ds, "sll", key->nd_sll, MASK(mask, nd_sll), verbose);
2930 format_eth(ds, "tll", key->nd_tll, MASK(mask, nd_tll), verbose);
2931
2932 ds_chomp(ds, ',');
2933 break;
2934 }
2935 case OVS_KEY_ATTR_UNSPEC:
2936 case __OVS_KEY_ATTR_MAX:
2937 default:
2938 format_generic_odp_key(a, ds);
2939 if (!is_exact) {
2940 ds_put_char(ds, '/');
2941 format_generic_odp_key(ma, ds);
2942 }
2943 break;
2944 }
2945 ds_put_char(ds, ')');
2946 }
2947
2948 static struct nlattr *
2949 generate_all_wildcard_mask(const struct attr_len_tbl tbl[], int max,
2950 struct ofpbuf *ofp, const struct nlattr *key)
2951 {
2952 const struct nlattr *a;
2953 unsigned int left;
2954 int type = nl_attr_type(key);
2955 int size = nl_attr_get_size(key);
2956
2957 if (odp_key_attr_len(tbl, max, type) != ATTR_LEN_NESTED) {
2958 nl_msg_put_unspec_zero(ofp, type, size);
2959 } else {
2960 size_t nested_mask;
2961
2962 if (tbl[type].next) {
2963 tbl = tbl[type].next;
2964 max = tbl[type].next_max;
2965 }
2966
2967 nested_mask = nl_msg_start_nested(ofp, type);
2968 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
2969 generate_all_wildcard_mask(tbl, max, ofp, nl_attr_get(a));
2970 }
2971 nl_msg_end_nested(ofp, nested_mask);
2972 }
2973
2974 return ofp->base;
2975 }
2976
2977 static void
2978 format_u128(struct ds *ds, const ovs_u128 *key, const ovs_u128 *mask,
2979 bool verbose)
2980 {
2981 if (verbose || (mask && !ovs_u128_is_zero(*mask))) {
2982 ovs_be128 value;
2983
2984 value = hton128(*key);
2985 ds_put_hex(ds, &value, sizeof value);
2986 if (mask && !(ovs_u128_is_ones(*mask))) {
2987 value = hton128(*mask);
2988 ds_put_char(ds, '/');
2989 ds_put_hex(ds, &value, sizeof value);
2990 }
2991 }
2992 }
2993
2994 /* Read the string from 's_' as a 128-bit value. If the string contains
2995 * a "/", the rest of the string will be treated as a 128-bit mask.
2996 *
2997 * If either the value or mask is larger than 64 bits, the string must
2998 * be in hexadecimal.
2999 */
3000 static int
3001 scan_u128(const char *s_, ovs_u128 *value, ovs_u128 *mask)
3002 {
3003 char *s = CONST_CAST(char *, s_);
3004 ovs_be128 be_value;
3005 ovs_be128 be_mask;
3006
3007 if (!parse_int_string(s, (uint8_t *)&be_value, sizeof be_value, &s)) {
3008 *value = ntoh128(be_value);
3009
3010 if (mask) {
3011 int n;
3012
3013 if (ovs_scan(s, "/%n", &n)) {
3014 int error;
3015
3016 s += n;
3017 error = parse_int_string(s, (uint8_t *)&be_mask,
3018 sizeof be_mask, &s);
3019 if (error) {
3020 return error;
3021 }
3022 *mask = ntoh128(be_mask);
3023 } else {
3024 *mask = OVS_U128_MAX;
3025 }
3026 }
3027 return s - s_;
3028 }
3029
3030 return 0;
3031 }
3032
3033 int
3034 odp_ufid_from_string(const char *s_, ovs_u128 *ufid)
3035 {
3036 const char *s = s_;
3037
3038 if (ovs_scan(s, "ufid:")) {
3039 s += 5;
3040
3041 if (!uuid_from_string_prefix((struct uuid *)ufid, s)) {
3042 return -EINVAL;
3043 }
3044 s += UUID_LEN;
3045
3046 return s - s_;
3047 }
3048
3049 return 0;
3050 }
3051
3052 void
3053 odp_format_ufid(const ovs_u128 *ufid, struct ds *ds)
3054 {
3055 ds_put_format(ds, "ufid:"UUID_FMT, UUID_ARGS((struct uuid *)ufid));
3056 }
3057
3058 /* Appends to 'ds' a string representation of the 'key_len' bytes of
3059 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
3060 * 'mask_len' bytes of 'mask' which apply to 'key'. If 'portno_names' is
3061 * non-null and 'verbose' is true, translates odp port number to its name. */
3062 void
3063 odp_flow_format(const struct nlattr *key, size_t key_len,
3064 const struct nlattr *mask, size_t mask_len,
3065 const struct hmap *portno_names, struct ds *ds, bool verbose)
3066 {
3067 if (key_len) {
3068 const struct nlattr *a;
3069 unsigned int left;
3070 bool has_ethtype_key = false;
3071 const struct nlattr *ma = NULL;
3072 struct ofpbuf ofp;
3073 bool first_field = true;
3074
3075 ofpbuf_init(&ofp, 100);
3076 NL_ATTR_FOR_EACH (a, left, key, key_len) {
3077 bool is_nested_attr;
3078 bool is_wildcard = false;
3079 int attr_type = nl_attr_type(a);
3080
3081 if (attr_type == OVS_KEY_ATTR_ETHERTYPE) {
3082 has_ethtype_key = true;
3083 }
3084
3085 is_nested_attr = odp_key_attr_len(ovs_flow_key_attr_lens,
3086 OVS_KEY_ATTR_MAX, attr_type) ==
3087 ATTR_LEN_NESTED;
3088
3089 if (mask && mask_len) {
3090 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
3091 is_wildcard = ma ? odp_mask_attr_is_wildcard(ma) : true;
3092 }
3093
3094 if (verbose || !is_wildcard || is_nested_attr) {
3095 if (is_wildcard && !ma) {
3096 ma = generate_all_wildcard_mask(ovs_flow_key_attr_lens,
3097 OVS_KEY_ATTR_MAX,
3098 &ofp, a);
3099 }
3100 if (!first_field) {
3101 ds_put_char(ds, ',');
3102 }
3103 format_odp_key_attr(a, ma, portno_names, ds, verbose);
3104 first_field = false;
3105 }
3106 ofpbuf_clear(&ofp);
3107 }
3108 ofpbuf_uninit(&ofp);
3109
3110 if (left) {
3111 int i;
3112
3113 if (left == key_len) {
3114 ds_put_cstr(ds, "<empty>");
3115 }
3116 ds_put_format(ds, ",***%u leftover bytes*** (", left);
3117 for (i = 0; i < left; i++) {
3118 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
3119 }
3120 ds_put_char(ds, ')');
3121 }
3122 if (!has_ethtype_key) {
3123 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
3124 if (ma) {
3125 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
3126 ntohs(nl_attr_get_be16(ma)));
3127 }
3128 }
3129 } else {
3130 ds_put_cstr(ds, "<empty>");
3131 }
3132 }
3133
3134 /* Appends to 'ds' a string representation of the 'key_len' bytes of
3135 * OVS_KEY_ATTR_* attributes in 'key'. */
3136 void
3137 odp_flow_key_format(const struct nlattr *key,
3138 size_t key_len, struct ds *ds)
3139 {
3140 odp_flow_format(key, key_len, NULL, 0, NULL, ds, true);
3141 }
3142
3143 static bool
3144 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
3145 {
3146 if (!strcasecmp(s, "no")) {
3147 *type = OVS_FRAG_TYPE_NONE;
3148 } else if (!strcasecmp(s, "first")) {
3149 *type = OVS_FRAG_TYPE_FIRST;
3150 } else if (!strcasecmp(s, "later")) {
3151 *type = OVS_FRAG_TYPE_LATER;
3152 } else {
3153 return false;
3154 }
3155 return true;
3156 }
3157
3158 /* Parsing. */
3159
3160 static int
3161 scan_eth(const char *s, struct eth_addr *key, struct eth_addr *mask)
3162 {
3163 int n;
3164
3165 if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n",
3166 ETH_ADDR_SCAN_ARGS(*key), &n)) {
3167 int len = n;
3168
3169 if (mask) {
3170 if (ovs_scan(s + len, "/"ETH_ADDR_SCAN_FMT"%n",
3171 ETH_ADDR_SCAN_ARGS(*mask), &n)) {
3172 len += n;
3173 } else {
3174 memset(mask, 0xff, sizeof *mask);
3175 }
3176 }
3177 return len;
3178 }
3179 return 0;
3180 }
3181
3182 static int
3183 scan_ipv4(const char *s, ovs_be32 *key, ovs_be32 *mask)
3184 {
3185 int n;
3186
3187 if (ovs_scan(s, IP_SCAN_FMT"%n", IP_SCAN_ARGS(key), &n)) {
3188 int len = n;
3189
3190 if (mask) {
3191 if (ovs_scan(s + len, "/"IP_SCAN_FMT"%n",
3192 IP_SCAN_ARGS(mask), &n)) {
3193 len += n;
3194 } else {
3195 *mask = OVS_BE32_MAX;
3196 }
3197 }
3198 return len;
3199 }
3200 return 0;
3201 }
3202
3203 static int
3204 scan_in6_addr(const char *s, struct in6_addr *key, struct in6_addr *mask)
3205 {
3206 int n;
3207 char ipv6_s[IPV6_SCAN_LEN + 1];
3208
3209 if (ovs_scan(s, IPV6_SCAN_FMT"%n", ipv6_s, &n)
3210 && inet_pton(AF_INET6, ipv6_s, key) == 1) {
3211 int len = n;
3212
3213 if (mask) {
3214 if (ovs_scan(s + len, "/"IPV6_SCAN_FMT"%n", ipv6_s, &n)
3215 && inet_pton(AF_INET6, ipv6_s, mask) == 1) {
3216 len += n;
3217 } else {
3218 memset(mask, 0xff, sizeof *mask);
3219 }
3220 }
3221 return len;
3222 }
3223 return 0;
3224 }
3225
3226 static int
3227 scan_ipv6(const char *s, ovs_be32 (*key)[4], ovs_be32 (*mask)[4])
3228 {
3229 return scan_in6_addr(s, key ? (struct in6_addr *) *key : NULL,
3230 mask ? (struct in6_addr *) *mask : NULL);
3231 }
3232
3233 static int
3234 scan_ipv6_label(const char *s, ovs_be32 *key, ovs_be32 *mask)
3235 {
3236 int key_, mask_;
3237 int n;
3238
3239 if (ovs_scan(s, "%i%n", &key_, &n)
3240 && (key_ & ~IPV6_LABEL_MASK) == 0) {
3241 int len = n;
3242
3243 *key = htonl(key_);
3244 if (mask) {
3245 if (ovs_scan(s + len, "/%i%n", &mask_, &n)
3246 && (mask_ & ~IPV6_LABEL_MASK) == 0) {
3247 len += n;
3248 *mask = htonl(mask_);
3249 } else {
3250 *mask = htonl(IPV6_LABEL_MASK);
3251 }
3252 }
3253 return len;
3254 }
3255 return 0;
3256 }
3257
3258 static int
3259 scan_u8(const char *s, uint8_t *key, uint8_t *mask)
3260 {
3261 int n;
3262
3263 if (ovs_scan(s, "%"SCNi8"%n", key, &n)) {
3264 int len = n;
3265
3266 if (mask) {
3267 if (ovs_scan(s + len, "/%"SCNi8"%n", mask, &n)) {
3268 len += n;
3269 } else {
3270 *mask = UINT8_MAX;
3271 }
3272 }
3273 return len;
3274 }
3275 return 0;
3276 }
3277
3278 static int
3279 scan_u16(const char *s, uint16_t *key, uint16_t *mask)
3280 {
3281 int n;
3282
3283 if (ovs_scan(s, "%"SCNi16"%n", key, &n)) {
3284 int len = n;
3285
3286 if (mask) {
3287 if (ovs_scan(s + len, "/%"SCNi16"%n", mask, &n)) {
3288 len += n;
3289 } else {
3290 *mask = UINT16_MAX;
3291 }
3292 }
3293 return len;
3294 }
3295 return 0;
3296 }
3297
3298 static int
3299 scan_u32(const char *s, uint32_t *key, uint32_t *mask)
3300 {
3301 int n;
3302
3303 if (ovs_scan(s, "%"SCNi32"%n", key, &n)) {
3304 int len = n;
3305
3306 if (mask) {
3307 if (ovs_scan(s + len, "/%"SCNi32"%n", mask, &n)) {
3308 len += n;
3309 } else {
3310 *mask = UINT32_MAX;
3311 }
3312 }
3313 return len;
3314 }
3315 return 0;
3316 }
3317
3318 static int
3319 scan_be16(const char *s, ovs_be16 *key, ovs_be16 *mask)
3320 {
3321 uint16_t key_, mask_;
3322 int n;
3323
3324 if (ovs_scan(s, "%"SCNi16"%n", &key_, &n)) {
3325 int len = n;
3326
3327 *key = htons(key_);
3328 if (mask) {
3329 if (ovs_scan(s + len, "/%"SCNi16"%n", &mask_, &n)) {
3330 len += n;
3331 *mask = htons(mask_);
3332 } else {
3333 *mask = OVS_BE16_MAX;
3334 }
3335 }
3336 return len;
3337 }
3338 return 0;
3339 }
3340
3341 static int
3342 scan_be64(const char *s, ovs_be64 *key, ovs_be64 *mask)
3343 {
3344 uint64_t key_, mask_;
3345 int n;
3346
3347 if (ovs_scan(s, "%"SCNi64"%n", &key_, &n)) {
3348 int len = n;
3349
3350 *key = htonll(key_);
3351 if (mask) {
3352 if (ovs_scan(s + len, "/%"SCNi64"%n", &mask_, &n)) {
3353 len += n;
3354 *mask = htonll(mask_);
3355 } else {
3356 *mask = OVS_BE64_MAX;
3357 }
3358 }
3359 return len;
3360 }
3361 return 0;
3362 }
3363
3364 static int
3365 scan_tun_flags(const char *s, uint16_t *key, uint16_t *mask)
3366 {
3367 uint32_t flags, fmask;
3368 int n;
3369
3370 n = parse_odp_flags(s, flow_tun_flag_to_string, &flags,
3371 FLOW_TNL_F_MASK, mask ? &fmask : NULL);
3372 if (n >= 0 && s[n] == ')') {
3373 *key = flags;
3374 if (mask) {
3375 *mask = fmask;
3376 }
3377 return n + 1;
3378 }
3379 return 0;
3380 }
3381
3382 static int
3383 scan_tcp_flags(const char *s, ovs_be16 *key, ovs_be16 *mask)
3384 {
3385 uint32_t flags, fmask;
3386 int n;
3387
3388 n = parse_odp_flags(s, packet_tcp_flag_to_string, &flags,
3389 TCP_FLAGS(OVS_BE16_MAX), mask ? &fmask : NULL);
3390 if (n >= 0) {
3391 *key = htons(flags);
3392 if (mask) {
3393 *mask = htons(fmask);
3394 }
3395 return n;
3396 }
3397 return 0;
3398 }
3399
3400 static uint32_t
3401 ovs_to_odp_ct_state(uint8_t state)
3402 {
3403 uint32_t odp = 0;
3404
3405 if (state & CS_NEW) {
3406 odp |= OVS_CS_F_NEW;
3407 }
3408 if (state & CS_ESTABLISHED) {
3409 odp |= OVS_CS_F_ESTABLISHED;
3410 }
3411 if (state & CS_RELATED) {
3412 odp |= OVS_CS_F_RELATED;
3413 }
3414 if (state & CS_INVALID) {
3415 odp |= OVS_CS_F_INVALID;
3416 }
3417 if (state & CS_REPLY_DIR) {
3418 odp |= OVS_CS_F_REPLY_DIR;
3419 }
3420 if (state & CS_TRACKED) {
3421 odp |= OVS_CS_F_TRACKED;
3422 }
3423 if (state & CS_SRC_NAT) {
3424 odp |= OVS_CS_F_SRC_NAT;
3425 }
3426 if (state & CS_DST_NAT) {
3427 odp |= OVS_CS_F_DST_NAT;
3428 }
3429
3430 return odp;
3431 }
3432
3433 static uint8_t
3434 odp_to_ovs_ct_state(uint32_t flags)
3435 {
3436 uint32_t state = 0;
3437
3438 if (flags & OVS_CS_F_NEW) {
3439 state |= CS_NEW;
3440 }
3441 if (flags & OVS_CS_F_ESTABLISHED) {
3442 state |= CS_ESTABLISHED;
3443 }
3444 if (flags & OVS_CS_F_RELATED) {
3445 state |= CS_RELATED;
3446 }
3447 if (flags & OVS_CS_F_INVALID) {
3448 state |= CS_INVALID;
3449 }
3450 if (flags & OVS_CS_F_REPLY_DIR) {
3451 state |= CS_REPLY_DIR;
3452 }
3453 if (flags & OVS_CS_F_TRACKED) {
3454 state |= CS_TRACKED;
3455 }
3456 if (flags & OVS_CS_F_SRC_NAT) {
3457 state |= CS_SRC_NAT;
3458 }
3459 if (flags & OVS_CS_F_DST_NAT) {
3460 state |= CS_DST_NAT;
3461 }
3462
3463 return state;
3464 }
3465
3466 static int
3467 scan_ct_state(const char *s, uint32_t *key, uint32_t *mask)
3468 {
3469 uint32_t flags, fmask;
3470 int n;
3471
3472 n = parse_flags(s, odp_ct_state_to_string, ')', NULL, NULL, &flags,
3473 ovs_to_odp_ct_state(CS_SUPPORTED_MASK),
3474 mask ? &fmask : NULL);
3475
3476 if (n >= 0) {
3477 *key = flags;
3478 if (mask) {
3479 *mask = fmask;
3480 }
3481 return n;
3482 }
3483 return 0;
3484 }
3485
3486 static int
3487 scan_frag(const char *s, uint8_t *key, uint8_t *mask)
3488 {
3489 int n;
3490 char frag[8];
3491 enum ovs_frag_type frag_type;
3492
3493 if (ovs_scan(s, "%7[a-z]%n", frag, &n)
3494 && ovs_frag_type_from_string(frag, &frag_type)) {
3495 int len = n;
3496
3497 *key = frag_type;
3498 if (mask) {
3499 *mask = UINT8_MAX;
3500 }
3501 return len;
3502 }
3503 return 0;
3504 }
3505
3506 static int
3507 scan_port(const char *s, uint32_t *key, uint32_t *mask,
3508 const struct simap *port_names)
3509 {
3510 int n;
3511
3512 if (ovs_scan(s, "%"SCNi32"%n", key, &n)) {
3513 int len = n;
3514
3515 if (mask) {
3516 if (ovs_scan(s + len, "/%"SCNi32"%n", mask, &n)) {
3517 len += n;
3518 } else {
3519 *mask = UINT32_MAX;
3520 }
3521 }
3522 return len;
3523 } else if (port_names) {
3524 const struct simap_node *node;
3525 int len;
3526
3527 len = strcspn(s, ")");
3528 node = simap_find_len(port_names, s, len);
3529 if (node) {
3530 *key = node->data;
3531
3532 if (mask) {
3533 *mask = UINT32_MAX;
3534 }
3535 return len;
3536 }
3537 }
3538 return 0;
3539 }
3540
3541 /* Helper for vlan parsing. */
3542 struct ovs_key_vlan__ {
3543 ovs_be16 tci;
3544 };
3545
3546 static bool
3547 set_be16_bf(ovs_be16 *bf, uint8_t bits, uint8_t offset, uint16_t value)
3548 {
3549 const uint16_t mask = ((1U << bits) - 1) << offset;
3550
3551 if (value >> bits) {
3552 return false;
3553 }
3554
3555 *bf = htons((ntohs(*bf) & ~mask) | (value << offset));
3556 return true;
3557 }
3558
3559 static int
3560 scan_be16_bf(const char *s, ovs_be16 *key, ovs_be16 *mask, uint8_t bits,
3561 uint8_t offset)
3562 {
3563 uint16_t key_, mask_;
3564 int n;
3565
3566 if (ovs_scan(s, "%"SCNi16"%n", &key_, &n)) {
3567 int len = n;
3568
3569 if (set_be16_bf(key, bits, offset, key_)) {
3570 if (mask) {
3571 if (ovs_scan(s + len, "/%"SCNi16"%n", &mask_, &n)) {
3572 len += n;
3573
3574 if (!set_be16_bf(mask, bits, offset, mask_)) {
3575 return 0;
3576 }
3577 } else {
3578 *mask |= htons(((1U << bits) - 1) << offset);
3579 }
3580 }
3581 return len;
3582 }
3583 }
3584 return 0;
3585 }
3586
3587 static int
3588 scan_vid(const char *s, ovs_be16 *key, ovs_be16 *mask)
3589 {
3590 return scan_be16_bf(s, key, mask, 12, VLAN_VID_SHIFT);
3591 }
3592
3593 static int
3594 scan_pcp(const char *s, ovs_be16 *key, ovs_be16 *mask)
3595 {
3596 return scan_be16_bf(s, key, mask, 3, VLAN_PCP_SHIFT);
3597 }
3598
3599 static int
3600 scan_cfi(const char *s, ovs_be16 *key, ovs_be16 *mask)
3601 {
3602 return scan_be16_bf(s, key, mask, 1, VLAN_CFI_SHIFT);
3603 }
3604
3605 /* For MPLS. */
3606 static bool
3607 set_be32_bf(ovs_be32 *bf, uint8_t bits, uint8_t offset, uint32_t value)
3608 {
3609 const uint32_t mask = ((1U << bits) - 1) << offset;
3610
3611 if (value >> bits) {
3612 return false;
3613 }
3614
3615 *bf = htonl((ntohl(*bf) & ~mask) | (value << offset));
3616 return true;
3617 }
3618
3619 static int
3620 scan_be32_bf(const char *s, ovs_be32 *key, ovs_be32 *mask, uint8_t bits,
3621 uint8_t offset)
3622 {
3623 uint32_t key_, mask_;
3624 int n;
3625
3626 if (ovs_scan(s, "%"SCNi32"%n", &key_, &n)) {
3627 int len = n;
3628
3629 if (set_be32_bf(key, bits, offset, key_)) {
3630 if (mask) {
3631 if (ovs_scan(s + len, "/%"SCNi32"%n", &mask_, &n)) {
3632 len += n;
3633
3634 if (!set_be32_bf(mask, bits, offset, mask_)) {
3635 return 0;
3636 }
3637 } else {
3638 *mask |= htonl(((1U << bits) - 1) << offset);
3639 }
3640 }
3641 return len;
3642 }
3643 }
3644 return 0;
3645 }
3646
3647 static int
3648 scan_mpls_label(const char *s, ovs_be32 *key, ovs_be32 *mask)
3649 {
3650 return scan_be32_bf(s, key, mask, 20, MPLS_LABEL_SHIFT);
3651 }
3652
3653 static int
3654 scan_mpls_tc(const char *s, ovs_be32 *key, ovs_be32 *mask)
3655 {
3656 return scan_be32_bf(s, key, mask, 3, MPLS_TC_SHIFT);
3657 }
3658
3659 static int
3660 scan_mpls_ttl(const char *s, ovs_be32 *key, ovs_be32 *mask)
3661 {
3662 return scan_be32_bf(s, key, mask, 8, MPLS_TTL_SHIFT);
3663 }
3664
3665 static int
3666 scan_mpls_bos(const char *s, ovs_be32 *key, ovs_be32 *mask)
3667 {
3668 return scan_be32_bf(s, key, mask, 1, MPLS_BOS_SHIFT);
3669 }
3670
3671 static int
3672 scan_vxlan_gbp(const char *s, uint32_t *key, uint32_t *mask)
3673 {
3674 const char *s_base = s;
3675 ovs_be16 id = 0, id_mask = 0;
3676 uint8_t flags = 0, flags_mask = 0;
3677
3678 if (!strncmp(s, "id=", 3)) {
3679 s += 3;
3680 s += scan_be16(s, &id, mask ? &id_mask : NULL);
3681 }
3682
3683 if (s[0] == ',') {
3684 s++;
3685 }
3686 if (!strncmp(s, "flags=", 6)) {
3687 s += 6;
3688 s += scan_u8(s, &flags, mask ? &flags_mask : NULL);
3689 }
3690
3691 if (!strncmp(s, "))", 2)) {
3692 s += 2;
3693
3694 *key = (flags << 16) | ntohs(id);
3695 if (mask) {
3696 *mask = (flags_mask << 16) | ntohs(id_mask);
3697 }
3698
3699 return s - s_base;
3700 }
3701
3702 return 0;
3703 }
3704
3705 static int
3706 scan_geneve(const char *s, struct geneve_scan *key, struct geneve_scan *mask)
3707 {
3708 const char *s_base = s;
3709 struct geneve_opt *opt = key->d;
3710 struct geneve_opt *opt_mask = mask ? mask->d : NULL;
3711 int len_remain = sizeof key->d;
3712
3713 while (s[0] == '{' && len_remain >= sizeof *opt) {
3714 int data_len = 0;
3715
3716 s++;
3717 len_remain -= sizeof *opt;
3718
3719 if (!strncmp(s, "class=", 6)) {
3720 s += 6;
3721 s += scan_be16(s, &opt->opt_class,
3722 mask ? &opt_mask->opt_class : NULL);
3723 } else if (mask) {
3724 memset(&opt_mask->opt_class, 0, sizeof opt_mask->opt_class);
3725 }
3726
3727 if (s[0] == ',') {
3728 s++;
3729 }
3730 if (!strncmp(s, "type=", 5)) {
3731 s += 5;
3732 s += scan_u8(s, &opt->type, mask ? &opt_mask->type : NULL);
3733 } else if (mask) {
3734 memset(&opt_mask->type, 0, sizeof opt_mask->type);
3735 }
3736
3737 if (s[0] == ',') {
3738 s++;
3739 }
3740 if (!strncmp(s, "len=", 4)) {
3741 uint8_t opt_len, opt_len_mask;
3742 s += 4;
3743 s += scan_u8(s, &opt_len, mask ? &opt_len_mask : NULL);
3744
3745 if (opt_len > 124 || opt_len % 4 || opt_len > len_remain) {
3746 return 0;
3747 }
3748 opt->length = opt_len / 4;
3749 if (mask) {
3750 opt_mask->length = opt_len_mask;
3751 }
3752 data_len = opt_len;
3753 } else if (mask) {
3754 memset(&opt_mask->type, 0, sizeof opt_mask->type);
3755 }
3756
3757 if (s[0] == ',') {
3758 s++;
3759 }
3760 if (parse_int_string(s, (uint8_t *)(opt + 1), data_len, (char **)&s)) {
3761 return 0;
3762 }
3763
3764 if (mask) {
3765 if (s[0] == '/') {
3766 s++;
3767 if (parse_int_string(s, (uint8_t *)(opt_mask + 1),
3768 data_len, (char **)&s)) {
3769 return 0;
3770 }
3771 }
3772 opt_mask->r1 = 0;
3773 opt_mask->r2 = 0;
3774 opt_mask->r3 = 0;
3775 }
3776
3777 if (s[0] == '}') {
3778 s++;
3779 opt += 1 + data_len / 4;
3780 if (mask) {
3781 opt_mask += 1 + data_len / 4;
3782 }
3783 len_remain -= data_len;
3784 }
3785 }
3786
3787 if (s[0] == ')') {
3788 int len = sizeof key->d - len_remain;
3789
3790 s++;
3791 key->len = len;
3792 if (mask) {
3793 mask->len = len;
3794 }
3795 return s - s_base;
3796 }
3797
3798 return 0;
3799 }
3800
3801 static void
3802 tun_flags_to_attr(struct ofpbuf *a, const void *data_)
3803 {
3804 const uint16_t *flags = data_;
3805
3806 if (*flags & FLOW_TNL_F_DONT_FRAGMENT) {
3807 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
3808 }
3809 if (*flags & FLOW_TNL_F_CSUM) {
3810 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
3811 }
3812 if (*flags & FLOW_TNL_F_OAM) {
3813 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_OAM);
3814 }
3815 }
3816
3817 static void
3818 vxlan_gbp_to_attr(struct ofpbuf *a, const void *data_)
3819 {
3820 const uint32_t *gbp = data_;
3821
3822 if (*gbp) {
3823 size_t vxlan_opts_ofs;
3824
3825 vxlan_opts_ofs = nl_msg_start_nested(a, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS);
3826 nl_msg_put_u32(a, OVS_VXLAN_EXT_GBP, *gbp);
3827 nl_msg_end_nested(a, vxlan_opts_ofs);
3828 }
3829 }
3830
3831 static void
3832 geneve_to_attr(struct ofpbuf *a, const void *data_)
3833 {
3834 const struct geneve_scan *geneve = data_;
3835
3836 nl_msg_put_unspec(a, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, geneve->d,
3837 geneve->len);
3838 }
3839
3840 #define SCAN_PUT_ATTR(BUF, ATTR, DATA, FUNC) \
3841 { \
3842 unsigned long call_fn = (unsigned long)FUNC; \
3843 if (call_fn) { \
3844 typedef void (*fn)(struct ofpbuf *, const void *); \
3845 fn func = FUNC; \
3846 func(BUF, &(DATA)); \
3847 } else { \
3848 nl_msg_put_unspec(BUF, ATTR, &(DATA), sizeof (DATA)); \
3849 } \
3850 }
3851
3852 #define SCAN_IF(NAME) \
3853 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3854 const char *start = s; \
3855 int len; \
3856 \
3857 s += strlen(NAME)
3858
3859 /* Usually no special initialization is needed. */
3860 #define SCAN_BEGIN(NAME, TYPE) \
3861 SCAN_IF(NAME); \
3862 TYPE skey, smask; \
3863 memset(&skey, 0, sizeof skey); \
3864 memset(&smask, 0, sizeof smask); \
3865 do { \
3866 len = 0;
3867
3868 /* Init as fully-masked as mask will not be scanned. */
3869 #define SCAN_BEGIN_FULLY_MASKED(NAME, TYPE) \
3870 SCAN_IF(NAME); \
3871 TYPE skey, smask; \
3872 memset(&skey, 0, sizeof skey); \
3873 memset(&smask, 0xff, sizeof smask); \
3874 do { \
3875 len = 0;
3876
3877 /* VLAN needs special initialization. */
3878 #define SCAN_BEGIN_INIT(NAME, TYPE, KEY_INIT, MASK_INIT) \
3879 SCAN_IF(NAME); \
3880 TYPE skey = KEY_INIT; \
3881 TYPE smask = MASK_INIT; \
3882 do { \
3883 len = 0;
3884
3885 /* Scan unnamed entry as 'TYPE' */
3886 #define SCAN_TYPE(TYPE, KEY, MASK) \
3887 len = scan_##TYPE(s, KEY, MASK); \
3888 if (len == 0) { \
3889 return -EINVAL; \
3890 } \
3891 s += len
3892
3893 /* Scan named ('NAME') entry 'FIELD' as 'TYPE'. */
3894 #define SCAN_FIELD(NAME, TYPE, FIELD) \
3895 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3896 s += strlen(NAME); \
3897 SCAN_TYPE(TYPE, &skey.FIELD, mask ? &smask.FIELD : NULL); \
3898 continue; \
3899 }
3900
3901 #define SCAN_FINISH() \
3902 } while (*s++ == ',' && len != 0); \
3903 if (s[-1] != ')') { \
3904 return -EINVAL; \
3905 }
3906
3907 #define SCAN_FINISH_SINGLE() \
3908 } while (false); \
3909 if (*s++ != ')') { \
3910 return -EINVAL; \
3911 }
3912
3913 /* Beginning of nested attribute. */
3914 #define SCAN_BEGIN_NESTED(NAME, ATTR) \
3915 SCAN_IF(NAME); \
3916 size_t key_offset, mask_offset; \
3917 key_offset = nl_msg_start_nested(key, ATTR); \
3918 if (mask) { \
3919 mask_offset = nl_msg_start_nested(mask, ATTR); \
3920 } \
3921 do { \
3922 len = 0;
3923
3924 #define SCAN_END_NESTED() \
3925 SCAN_FINISH(); \
3926 nl_msg_end_nested(key, key_offset); \
3927 if (mask) { \
3928 nl_msg_end_nested(mask, mask_offset); \
3929 } \
3930 return s - start; \
3931 }
3932
3933 #define SCAN_FIELD_NESTED__(NAME, TYPE, SCAN_AS, ATTR, FUNC) \
3934 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3935 TYPE skey, smask; \
3936 memset(&skey, 0, sizeof skey); \
3937 memset(&smask, 0xff, sizeof smask); \
3938 s += strlen(NAME); \
3939 SCAN_TYPE(SCAN_AS, &skey, &smask); \
3940 SCAN_PUT(ATTR, FUNC); \
3941 continue; \
3942 }
3943
3944 #define SCAN_FIELD_NESTED(NAME, TYPE, SCAN_AS, ATTR) \
3945 SCAN_FIELD_NESTED__(NAME, TYPE, SCAN_AS, ATTR, NULL)
3946
3947 #define SCAN_FIELD_NESTED_FUNC(NAME, TYPE, SCAN_AS, FUNC) \
3948 SCAN_FIELD_NESTED__(NAME, TYPE, SCAN_AS, 0, FUNC)
3949
3950 #define SCAN_PUT(ATTR, FUNC) \
3951 SCAN_PUT_ATTR(key, ATTR, skey, FUNC); \
3952 if (mask) \
3953 SCAN_PUT_ATTR(mask, ATTR, smask, FUNC); \
3954
3955 #define SCAN_END(ATTR) \
3956 SCAN_FINISH(); \
3957 SCAN_PUT(ATTR, NULL); \
3958 return s - start; \
3959 }
3960
3961 #define SCAN_BEGIN_ARRAY(NAME, TYPE, CNT) \
3962 SCAN_IF(NAME); \
3963 TYPE skey[CNT], smask[CNT]; \
3964 memset(&skey, 0, sizeof skey); \
3965 memset(&smask, 0, sizeof smask); \
3966 int idx = 0, cnt = CNT; \
3967 uint64_t fields = 0; \
3968 do { \
3969 int field = 0; \
3970 len = 0;
3971
3972 /* Scan named ('NAME') entry 'FIELD' as 'TYPE'. */
3973 #define SCAN_FIELD_ARRAY(NAME, TYPE, FIELD) \
3974 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3975 if (fields & (1UL << field)) { \
3976 fields = 0; \
3977 if (++idx == cnt) { \
3978 break; \
3979 } \
3980 } \
3981 s += strlen(NAME); \
3982 SCAN_TYPE(TYPE, &skey[idx].FIELD, mask ? &smask[idx].FIELD : NULL); \
3983 fields |= 1UL << field; \
3984 continue; \
3985 } \
3986 field++;
3987
3988 #define SCAN_PUT_ATTR_ARRAY(BUF, ATTR, DATA, CNT) \
3989 nl_msg_put_unspec(BUF, ATTR, &(DATA), sizeof (DATA)[0] * (CNT)); \
3990
3991 #define SCAN_PUT_ARRAY(ATTR, CNT) \
3992 SCAN_PUT_ATTR_ARRAY(key, ATTR, skey, CNT); \
3993 if (mask) { \
3994 SCAN_PUT_ATTR_ARRAY(mask, ATTR, smask, CNT); \
3995 }
3996
3997 #define SCAN_END_ARRAY(ATTR) \
3998 SCAN_FINISH(); \
3999 if (idx == cnt) { \
4000 return -EINVAL; \
4001 } \
4002 SCAN_PUT_ARRAY(ATTR, idx + 1); \
4003 return s - start; \
4004 }
4005
4006 #define SCAN_END_SINGLE(ATTR) \
4007 SCAN_FINISH_SINGLE(); \
4008 SCAN_PUT(ATTR, NULL); \
4009 return s - start; \
4010 }
4011
4012 #define SCAN_SINGLE(NAME, TYPE, SCAN_AS, ATTR) \
4013 SCAN_BEGIN(NAME, TYPE) { \
4014 SCAN_TYPE(SCAN_AS, &skey, &smask); \
4015 } SCAN_END_SINGLE(ATTR)
4016
4017 #define SCAN_SINGLE_FULLY_MASKED(NAME, TYPE, SCAN_AS, ATTR) \
4018 SCAN_BEGIN_FULLY_MASKED(NAME, TYPE) { \
4019 SCAN_TYPE(SCAN_AS, &skey, NULL); \
4020 } SCAN_END_SINGLE(ATTR)
4021
4022 /* scan_port needs one extra argument. */
4023 #define SCAN_SINGLE_PORT(NAME, TYPE, ATTR) \
4024 SCAN_BEGIN(NAME, TYPE) { \
4025 len = scan_port(s, &skey, &smask, port_names); \
4026 if (len == 0) { \
4027 return -EINVAL; \
4028 } \
4029 s += len; \
4030 } SCAN_END_SINGLE(ATTR)
4031
4032 static int
4033 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
4034 struct ofpbuf *key, struct ofpbuf *mask)
4035 {
4036 ovs_u128 ufid;
4037 int len;
4038
4039 /* Skip UFID. */
4040 len = odp_ufid_from_string(s, &ufid);
4041 if (len) {
4042 return len;
4043 }
4044
4045 SCAN_SINGLE("skb_priority(", uint32_t, u32, OVS_KEY_ATTR_PRIORITY);
4046 SCAN_SINGLE("skb_mark(", uint32_t, u32, OVS_KEY_ATTR_SKB_MARK);
4047 SCAN_SINGLE_FULLY_MASKED("recirc_id(", uint32_t, u32,
4048 OVS_KEY_ATTR_RECIRC_ID);
4049 SCAN_SINGLE("dp_hash(", uint32_t, u32, OVS_KEY_ATTR_DP_HASH);
4050
4051 SCAN_SINGLE("ct_state(", uint32_t, ct_state, OVS_KEY_ATTR_CT_STATE);
4052 SCAN_SINGLE("ct_zone(", uint16_t, u16, OVS_KEY_ATTR_CT_ZONE);
4053 SCAN_SINGLE("ct_mark(", uint32_t, u32, OVS_KEY_ATTR_CT_MARK);
4054 SCAN_SINGLE("ct_label(", ovs_u128, u128, OVS_KEY_ATTR_CT_LABELS);
4055
4056 SCAN_BEGIN_NESTED("tunnel(", OVS_KEY_ATTR_TUNNEL) {
4057 SCAN_FIELD_NESTED("tun_id=", ovs_be64, be64, OVS_TUNNEL_KEY_ATTR_ID);
4058 SCAN_FIELD_NESTED("src=", ovs_be32, ipv4, OVS_TUNNEL_KEY_ATTR_IPV4_SRC);
4059 SCAN_FIELD_NESTED("dst=", ovs_be32, ipv4, OVS_TUNNEL_KEY_ATTR_IPV4_DST);
4060 SCAN_FIELD_NESTED("ipv6_src=", struct in6_addr, in6_addr, OVS_TUNNEL_KEY_ATTR_IPV6_SRC);
4061 SCAN_FIELD_NESTED("ipv6_dst=", struct in6_addr, in6_addr, OVS_TUNNEL_KEY_ATTR_IPV6_DST);
4062 SCAN_FIELD_NESTED("tos=", uint8_t, u8, OVS_TUNNEL_KEY_ATTR_TOS);
4063 SCAN_FIELD_NESTED("ttl=", uint8_t, u8, OVS_TUNNEL_KEY_ATTR_TTL);
4064 SCAN_FIELD_NESTED("tp_src=", ovs_be16, be16, OVS_TUNNEL_KEY_ATTR_TP_SRC);
4065 SCAN_FIELD_NESTED("tp_dst=", ovs_be16, be16, OVS_TUNNEL_KEY_ATTR_TP_DST);
4066 SCAN_FIELD_NESTED_FUNC("vxlan(gbp(", uint32_t, vxlan_gbp, vxlan_gbp_to_attr);
4067 SCAN_FIELD_NESTED_FUNC("geneve(", struct geneve_scan, geneve,
4068 geneve_to_attr);
4069 SCAN_FIELD_NESTED_FUNC("flags(", uint16_t, tun_flags, tun_flags_to_attr);
4070 } SCAN_END_NESTED();
4071
4072 SCAN_SINGLE_PORT("in_port(", uint32_t, OVS_KEY_ATTR_IN_PORT);
4073
4074 SCAN_BEGIN("eth(", struct ovs_key_ethernet) {
4075 SCAN_FIELD("src=", eth, eth_src);
4076 SCAN_FIELD("dst=", eth, eth_dst);
4077 } SCAN_END(OVS_KEY_ATTR_ETHERNET);
4078
4079 SCAN_BEGIN_INIT("vlan(", struct ovs_key_vlan__,
4080 { htons(VLAN_CFI) }, { htons(VLAN_CFI) }) {
4081 SCAN_FIELD("vid=", vid, tci);
4082 SCAN_FIELD("pcp=", pcp, tci);
4083 SCAN_FIELD("cfi=", cfi, tci);
4084 } SCAN_END(OVS_KEY_ATTR_VLAN);
4085
4086 SCAN_SINGLE("eth_type(", ovs_be16, be16, OVS_KEY_ATTR_ETHERTYPE);
4087
4088 SCAN_BEGIN_ARRAY("mpls(", struct ovs_key_mpls, FLOW_MAX_MPLS_LABELS) {
4089 SCAN_FIELD_ARRAY("label=", mpls_label, mpls_lse);
4090 SCAN_FIELD_ARRAY("tc=", mpls_tc, mpls_lse);
4091 SCAN_FIELD_ARRAY("ttl=", mpls_ttl, mpls_lse);
4092 SCAN_FIELD_ARRAY("bos=", mpls_bos, mpls_lse);
4093 } SCAN_END_ARRAY(OVS_KEY_ATTR_MPLS);
4094
4095 SCAN_BEGIN("ipv4(", struct ovs_key_ipv4) {
4096 SCAN_FIELD("src=", ipv4, ipv4_src);
4097 SCAN_FIELD("dst=", ipv4, ipv4_dst);
4098 SCAN_FIELD("proto=", u8, ipv4_proto);
4099 SCAN_FIELD("tos=", u8, ipv4_tos);
4100 SCAN_FIELD("ttl=", u8, ipv4_ttl);
4101 SCAN_FIELD("frag=", frag, ipv4_frag);
4102 } SCAN_END(OVS_KEY_ATTR_IPV4);
4103
4104 SCAN_BEGIN("ipv6(", struct ovs_key_ipv6) {
4105 SCAN_FIELD("src=", ipv6, ipv6_src);
4106 SCAN_FIELD("dst=", ipv6, ipv6_dst);
4107 SCAN_FIELD("label=", ipv6_label, ipv6_label);
4108 SCAN_FIELD("proto=", u8, ipv6_proto);
4109 SCAN_FIELD("tclass=", u8, ipv6_tclass);
4110 SCAN_FIELD("hlimit=", u8, ipv6_hlimit);
4111 SCAN_FIELD("frag=", frag, ipv6_frag);
4112 } SCAN_END(OVS_KEY_ATTR_IPV6);
4113
4114 SCAN_BEGIN("tcp(", struct ovs_key_tcp) {
4115 SCAN_FIELD("src=", be16, tcp_src);
4116 SCAN_FIELD("dst=", be16, tcp_dst);
4117 } SCAN_END(OVS_KEY_ATTR_TCP);
4118
4119 SCAN_SINGLE("tcp_flags(", ovs_be16, tcp_flags, OVS_KEY_ATTR_TCP_FLAGS);
4120
4121 SCAN_BEGIN("udp(", struct ovs_key_udp) {
4122 SCAN_FIELD("src=", be16, udp_src);
4123 SCAN_FIELD("dst=", be16, udp_dst);
4124 } SCAN_END(OVS_KEY_ATTR_UDP);
4125
4126 SCAN_BEGIN("sctp(", struct ovs_key_sctp) {
4127 SCAN_FIELD("src=", be16, sctp_src);
4128 SCAN_FIELD("dst=", be16, sctp_dst);
4129 } SCAN_END(OVS_KEY_ATTR_SCTP);
4130
4131 SCAN_BEGIN("icmp(", struct ovs_key_icmp) {
4132 SCAN_FIELD("type=", u8, icmp_type);
4133 SCAN_FIELD("code=", u8, icmp_code);
4134 } SCAN_END(OVS_KEY_ATTR_ICMP);
4135
4136 SCAN_BEGIN("icmpv6(", struct ovs_key_icmpv6) {
4137 SCAN_FIELD("type=", u8, icmpv6_type);
4138 SCAN_FIELD("code=", u8, icmpv6_code);
4139 } SCAN_END(OVS_KEY_ATTR_ICMPV6);
4140
4141 SCAN_BEGIN("arp(", struct ovs_key_arp) {
4142 SCAN_FIELD("sip=", ipv4, arp_sip);
4143 SCAN_FIELD("tip=", ipv4, arp_tip);
4144 SCAN_FIELD("op=", be16, arp_op);
4145 SCAN_FIELD("sha=", eth, arp_sha);
4146 SCAN_FIELD("tha=", eth, arp_tha);
4147 } SCAN_END(OVS_KEY_ATTR_ARP);
4148
4149 SCAN_BEGIN("nd(", struct ovs_key_nd) {
4150 SCAN_FIELD("target=", ipv6, nd_target);
4151 SCAN_FIELD("sll=", eth, nd_sll);
4152 SCAN_FIELD("tll=", eth, nd_tll);
4153 } SCAN_END(OVS_KEY_ATTR_ND);
4154
4155 /* Encap open-coded. */
4156 if (!strncmp(s, "encap(", 6)) {
4157 const char *start = s;
4158 size_t encap, encap_mask = 0;
4159
4160 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
4161 if (mask) {
4162 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
4163 }
4164
4165 s += 6;
4166 for (;;) {
4167 int retval;
4168
4169 s += strspn(s, delimiters);
4170 if (!*s) {
4171 return -EINVAL;
4172 } else if (*s == ')') {
4173 break;
4174 }
4175
4176 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
4177 if (retval < 0) {
4178 return retval;
4179 }
4180 s += retval;
4181 }
4182 s++;
4183
4184 nl_msg_end_nested(key, encap);
4185 if (mask) {
4186 nl_msg_end_nested(mask, encap_mask);
4187 }
4188
4189 return s - start;
4190 }
4191
4192 return -EINVAL;
4193 }
4194
4195 /* Parses the string representation of a datapath flow key, in the
4196 * format output by odp_flow_key_format(). Returns 0 if successful,
4197 * otherwise a positive errno value. On success, the flow key is
4198 * appended to 'key' as a series of Netlink attributes. On failure, no
4199 * data is appended to 'key'. Either way, 'key''s data might be
4200 * reallocated.
4201 *
4202 * If 'port_names' is nonnull, it points to an simap that maps from a port name
4203 * to a port number. (Port names may be used instead of port numbers in
4204 * in_port.)
4205 *
4206 * On success, the attributes appended to 'key' are individually syntactically
4207 * valid, but they may not be valid as a sequence. 'key' might, for example,
4208 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
4209 int
4210 odp_flow_from_string(const char *s, const struct simap *port_names,
4211 struct ofpbuf *key, struct ofpbuf *mask)
4212 {
4213 const size_t old_size = key->size;
4214 for (;;) {
4215 int retval;
4216
4217 s += strspn(s, delimiters);
4218 if (!*s) {
4219 return 0;
4220 }
4221
4222 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
4223 if (retval < 0) {
4224 key->size = old_size;
4225 return -retval;
4226 }
4227 s += retval;
4228 }
4229
4230 return 0;
4231 }
4232
4233 static uint8_t
4234 ovs_to_odp_frag(uint8_t nw_frag, bool is_mask)
4235 {
4236 if (is_mask) {
4237 /* Netlink interface 'enum ovs_frag_type' is an 8-bit enumeration type,
4238 * not a set of flags or bitfields. Hence, if the struct flow nw_frag
4239 * mask, which is a set of bits, has the FLOW_NW_FRAG_ANY as zero, we
4240 * must use a zero mask for the netlink frag field, and all ones mask
4241 * otherwise. */
4242 return (nw_frag & FLOW_NW_FRAG_ANY) ? UINT8_MAX : 0;
4243 }
4244 return !(nw_frag & FLOW_NW_FRAG_ANY) ? OVS_FRAG_TYPE_NONE
4245 : nw_frag & FLOW_NW_FRAG_LATER ? OVS_FRAG_TYPE_LATER
4246 : OVS_FRAG_TYPE_FIRST;
4247 }
4248
4249 static void get_ethernet_key(const struct flow *, struct ovs_key_ethernet *);
4250 static void put_ethernet_key(const struct ovs_key_ethernet *, struct flow *);
4251 static void get_ipv4_key(const struct flow *, struct ovs_key_ipv4 *,
4252 bool is_mask);
4253 static void put_ipv4_key(const struct ovs_key_ipv4 *, struct flow *,
4254 bool is_mask);
4255 static void get_ipv6_key(const struct flow *, struct ovs_key_ipv6 *,
4256 bool is_mask);
4257 static void put_ipv6_key(const struct ovs_key_ipv6 *, struct flow *,
4258 bool is_mask);
4259 static void get_arp_key(const struct flow *, struct ovs_key_arp *);
4260 static void put_arp_key(const struct ovs_key_arp *, struct flow *);
4261 static void get_nd_key(const struct flow *, struct ovs_key_nd *);
4262 static void put_nd_key(const struct ovs_key_nd *, struct flow *);
4263
4264 /* These share the same layout. */
4265 union ovs_key_tp {
4266 struct ovs_key_tcp tcp;
4267 struct ovs_key_udp udp;
4268 struct ovs_key_sctp sctp;
4269 };
4270
4271 static void get_tp_key(const struct flow *, union ovs_key_tp *);
4272 static void put_tp_key(const union ovs_key_tp *, struct flow *);
4273
4274 static void
4275 odp_flow_key_from_flow__(const struct odp_flow_key_parms *parms,
4276 bool export_mask, struct ofpbuf *buf)
4277 {
4278 struct ovs_key_ethernet *eth_key;
4279 size_t encap;
4280 const struct flow *flow = parms->flow;
4281 const struct flow *data = export_mask ? parms->mask : parms->flow;
4282
4283 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
4284
4285 if (flow_tnl_dst_is_set(&flow->tunnel) || export_mask) {
4286 tun_key_to_attr(buf, &data->tunnel, &parms->flow->tunnel,
4287 parms->key_buf);
4288 }
4289
4290 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->pkt_mark);
4291
4292 if (parms->support.ct_state) {
4293 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_STATE,
4294 ovs_to_odp_ct_state(data->ct_state));
4295 }
4296 if (parms->support.ct_zone) {
4297 nl_msg_put_u16(buf, OVS_KEY_ATTR_CT_ZONE, data->ct_zone);
4298 }
4299 if (parms->support.ct_mark) {
4300 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_MARK, data->ct_mark);
4301 }
4302 if (parms->support.ct_label) {
4303 nl_msg_put_unspec(buf, OVS_KEY_ATTR_CT_LABELS, &data->ct_label,
4304 sizeof(data->ct_label));
4305 }
4306 if (parms->support.recirc) {
4307 nl_msg_put_u32(buf, OVS_KEY_ATTR_RECIRC_ID, data->recirc_id);
4308 nl_msg_put_u32(buf, OVS_KEY_ATTR_DP_HASH, data->dp_hash);
4309 }
4310
4311 /* Add an ingress port attribute if this is a mask or 'in_port.odp_port'
4312 * is not the magical value "ODPP_NONE". */
4313 if (export_mask || flow->in_port.odp_port != ODPP_NONE) {
4314 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, data->in_port.odp_port);
4315 }
4316
4317 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
4318 sizeof *eth_key);
4319 get_ethernet_key(data, eth_key);
4320
4321 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
4322 if (export_mask) {
4323 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
4324 } else {
4325 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
4326 }
4327 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
4328 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
4329 if (flow->vlan_tci == htons(0)) {
4330 goto unencap;
4331 }
4332 } else {
4333 encap = 0;
4334 }
4335
4336 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
4337 /* For backwards compatibility with kernels that don't support
4338 * wildcarding, the following convention is used to encode the
4339 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
4340 *
4341 * key mask matches
4342 * -------- -------- -------
4343 * >0x5ff 0xffff Specified Ethernet II Ethertype.
4344 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
4345 * <none> 0xffff Any non-Ethernet II frame (except valid
4346 * 802.3 SNAP packet with valid eth_type).
4347 */
4348 if (export_mask) {
4349 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
4350 }
4351 goto unencap;
4352 }
4353
4354 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
4355
4356 if (flow->dl_type == htons(ETH_TYPE_IP)) {
4357 struct ovs_key_ipv4 *ipv4_key;
4358
4359 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
4360 sizeof *ipv4_key);
4361 get_ipv4_key(data, ipv4_key, export_mask);
4362 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
4363 struct ovs_key_ipv6 *ipv6_key;
4364
4365 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
4366 sizeof *ipv6_key);
4367 get_ipv6_key(data, ipv6_key, export_mask);
4368 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
4369 flow->dl_type == htons(ETH_TYPE_RARP)) {
4370 struct ovs_key_arp *arp_key;
4371
4372 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
4373 sizeof *arp_key);
4374 get_arp_key(data, arp_key);
4375 } else if (eth_type_mpls(flow->dl_type)) {
4376 struct ovs_key_mpls *mpls_key;
4377 int i, n;
4378
4379 n = flow_count_mpls_labels(flow, NULL);
4380 if (export_mask) {
4381 n = MIN(n, parms->support.max_mpls_depth);
4382 }
4383 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
4384 n * sizeof *mpls_key);
4385 for (i = 0; i < n; i++) {
4386 mpls_key[i].mpls_lse = data->mpls_lse[i];
4387 }
4388 }
4389
4390 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4391 if (flow->nw_proto == IPPROTO_TCP) {
4392 union ovs_key_tp *tcp_key;
4393
4394 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
4395 sizeof *tcp_key);
4396 get_tp_key(data, tcp_key);
4397 if (data->tcp_flags) {
4398 nl_msg_put_be16(buf, OVS_KEY_ATTR_TCP_FLAGS, data->tcp_flags);
4399 }
4400 } else if (flow->nw_proto == IPPROTO_UDP) {
4401 union ovs_key_tp *udp_key;
4402
4403 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
4404 sizeof *udp_key);
4405 get_tp_key(data, udp_key);
4406 } else if (flow->nw_proto == IPPROTO_SCTP) {
4407 union ovs_key_tp *sctp_key;
4408
4409 sctp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_SCTP,
4410 sizeof *sctp_key);
4411 get_tp_key(data, sctp_key);
4412 } else if (flow->dl_type == htons(ETH_TYPE_IP)
4413 && flow->nw_proto == IPPROTO_ICMP) {
4414 struct ovs_key_icmp *icmp_key;
4415
4416 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
4417 sizeof *icmp_key);
4418 icmp_key->icmp_type = ntohs(data->tp_src);
4419 icmp_key->icmp_code = ntohs(data->tp_dst);
4420 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
4421 && flow->nw_proto == IPPROTO_ICMPV6) {
4422 struct ovs_key_icmpv6 *icmpv6_key;
4423
4424 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
4425 sizeof *icmpv6_key);
4426 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
4427 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
4428
4429 if (is_nd(flow, NULL)
4430 /* Even though 'tp_src' and 'tp_dst' are 16 bits wide, ICMP
4431 * type and code are 8 bits wide. Therefore, an exact match
4432 * looks like htons(0xff), not htons(0xffff). See
4433 * xlate_wc_finish() for details. */
4434 && (!export_mask || (data->tp_src == htons(0xff)
4435 && data->tp_dst == htons(0xff)))) {
4436
4437 struct ovs_key_nd *nd_key;
4438
4439 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
4440 sizeof *nd_key);
4441 memcpy(nd_key->nd_target, &data->nd_target,
4442 sizeof nd_key->nd_target);
4443 nd_key->nd_sll = data->arp_sha;
4444 nd_key->nd_tll = data->arp_tha;
4445 }
4446 }
4447 }
4448
4449 unencap:
4450 if (encap) {
4451 nl_msg_end_nested(buf, encap);
4452 }
4453 }
4454
4455 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
4456 *
4457 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
4458 * capable of being expanded to allow for that much space. */
4459 void
4460 odp_flow_key_from_flow(const struct odp_flow_key_parms *parms,
4461 struct ofpbuf *buf)
4462 {
4463 odp_flow_key_from_flow__(parms, false, buf);
4464 }
4465
4466 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
4467 * 'buf'.
4468 *
4469 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
4470 * capable of being expanded to allow for that much space. */
4471 void
4472 odp_flow_key_from_mask(const struct odp_flow_key_parms *parms,
4473 struct ofpbuf *buf)
4474 {
4475 odp_flow_key_from_flow__(parms, true, buf);
4476 }
4477
4478 /* Generate ODP flow key from the given packet metadata */
4479 void
4480 odp_key_from_pkt_metadata(struct ofpbuf *buf, const struct pkt_metadata *md)
4481 {
4482 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, md->skb_priority);
4483
4484 if (flow_tnl_dst_is_set(&md->tunnel)) {
4485 tun_key_to_attr(buf, &md->tunnel, &md->tunnel, NULL);
4486 }
4487
4488 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, md->pkt_mark);
4489
4490 if (md->ct_state) {
4491 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_STATE,
4492 ovs_to_odp_ct_state(md->ct_state));
4493 if (md->ct_zone) {
4494 nl_msg_put_u16(buf, OVS_KEY_ATTR_CT_ZONE, md->ct_zone);
4495 }
4496 if (md->ct_mark) {
4497 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_MARK, md->ct_mark);
4498 }
4499 if (!ovs_u128_is_zero(md->ct_label)) {
4500 nl_msg_put_unspec(buf, OVS_KEY_ATTR_CT_LABELS, &md->ct_label,
4501 sizeof(md->ct_label));
4502 }
4503 }
4504
4505 /* Add an ingress port attribute if 'odp_in_port' is not the magical
4506 * value "ODPP_NONE". */
4507 if (md->in_port.odp_port != ODPP_NONE) {
4508 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, md->in_port.odp_port);
4509 }
4510 }
4511
4512 /* Generate packet metadata from the given ODP flow key. */
4513 void
4514 odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len,
4515 struct pkt_metadata *md)
4516 {
4517 const struct nlattr *nla;
4518 size_t left;
4519 uint32_t wanted_attrs = 1u << OVS_KEY_ATTR_PRIORITY |
4520 1u << OVS_KEY_ATTR_SKB_MARK | 1u << OVS_KEY_ATTR_TUNNEL |
4521 1u << OVS_KEY_ATTR_IN_PORT;
4522
4523 pkt_metadata_init(md, ODPP_NONE);
4524
4525 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
4526 uint16_t type = nl_attr_type(nla);
4527 size_t len = nl_attr_get_size(nla);
4528 int expected_len = odp_key_attr_len(ovs_flow_key_attr_lens,
4529 OVS_KEY_ATTR_MAX, type);
4530
4531 if (len != expected_len && expected_len >= 0) {
4532 continue;
4533 }
4534
4535 switch (type) {
4536 case OVS_KEY_ATTR_RECIRC_ID:
4537 md->recirc_id = nl_attr_get_u32(nla);
4538 wanted_attrs &= ~(1u << OVS_KEY_ATTR_RECIRC_ID);
4539 break;
4540 case OVS_KEY_ATTR_DP_HASH:
4541 md->dp_hash = nl_attr_get_u32(nla);
4542 wanted_attrs &= ~(1u << OVS_KEY_ATTR_DP_HASH);
4543 break;
4544 case OVS_KEY_ATTR_PRIORITY:
4545 md->skb_priority = nl_attr_get_u32(nla);
4546 wanted_attrs &= ~(1u << OVS_KEY_ATTR_PRIORITY);
4547 break;
4548 case OVS_KEY_ATTR_SKB_MARK:
4549 md->pkt_mark = nl_attr_get_u32(nla);
4550 wanted_attrs &= ~(1u << OVS_KEY_ATTR_SKB_MARK);
4551 break;
4552 case OVS_KEY_ATTR_CT_STATE:
4553 md->ct_state = odp_to_ovs_ct_state(nl_attr_get_u32(nla));
4554 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_STATE);
4555 break;
4556 case OVS_KEY_ATTR_CT_ZONE:
4557 md->ct_zone = nl_attr_get_u16(nla);
4558 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_ZONE);
4559 break;
4560 case OVS_KEY_ATTR_CT_MARK:
4561 md->ct_mark = nl_attr_get_u32(nla);
4562 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_MARK);
4563 break;
4564 case OVS_KEY_ATTR_CT_LABELS: {
4565 const ovs_u128 *cl = nl_attr_get(nla);
4566
4567 md->ct_label = *cl;
4568 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_LABELS);
4569 break;
4570 }
4571 case OVS_KEY_ATTR_TUNNEL: {
4572 enum odp_key_fitness res;
4573
4574 res = odp_tun_key_from_attr(nla, true, &md->tunnel);
4575 if (res == ODP_FIT_ERROR) {
4576 memset(&md->tunnel, 0, sizeof md->tunnel);
4577 } else if (res == ODP_FIT_PERFECT) {
4578 wanted_attrs &= ~(1u << OVS_KEY_ATTR_TUNNEL);
4579 }
4580 break;
4581 }
4582 case OVS_KEY_ATTR_IN_PORT:
4583 md->in_port.odp_port = nl_attr_get_odp_port(nla);
4584 wanted_attrs &= ~(1u << OVS_KEY_ATTR_IN_PORT);
4585 break;
4586 default:
4587 break;
4588 }
4589
4590 if (!wanted_attrs) {
4591 return; /* Have everything. */
4592 }
4593 }
4594 }
4595
4596 uint32_t
4597 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
4598 {
4599 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
4600 return hash_bytes32(ALIGNED_CAST(const uint32_t *, key), key_len, 0);
4601 }
4602
4603 static void
4604 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
4605 uint64_t attrs, int out_of_range_attr,
4606 const struct nlattr *key, size_t key_len)
4607 {
4608 struct ds s;
4609 int i;
4610
4611 if (VLOG_DROP_DBG(rl)) {
4612 return;
4613 }
4614
4615 ds_init(&s);
4616 for (i = 0; i < 64; i++) {
4617 if (attrs & (UINT64_C(1) << i)) {
4618 char namebuf[OVS_KEY_ATTR_BUFSIZE];
4619
4620 ds_put_format(&s, " %s",
4621 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
4622 }
4623 }
4624 if (out_of_range_attr) {
4625 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
4626 }
4627
4628 ds_put_cstr(&s, ": ");
4629 odp_flow_key_format(key, key_len, &s);
4630
4631 VLOG_DBG("%s:%s", title, ds_cstr(&s));
4632 ds_destroy(&s);
4633 }
4634
4635 static uint8_t
4636 odp_to_ovs_frag(uint8_t odp_frag, bool is_mask)
4637 {
4638 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4639
4640 if (is_mask) {
4641 return odp_frag ? FLOW_NW_FRAG_MASK : 0;
4642 }
4643
4644 if (odp_frag > OVS_FRAG_TYPE_LATER) {
4645 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
4646 return 0xff; /* Error. */
4647 }
4648
4649 return (odp_frag == OVS_FRAG_TYPE_NONE) ? 0
4650 : (odp_frag == OVS_FRAG_TYPE_FIRST) ? FLOW_NW_FRAG_ANY
4651 : FLOW_NW_FRAG_ANY | FLOW_NW_FRAG_LATER;
4652 }
4653
4654 static bool
4655 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
4656 const struct nlattr *attrs[], uint64_t *present_attrsp,
4657 int *out_of_range_attrp)
4658 {
4659 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
4660 const struct nlattr *nla;
4661 uint64_t present_attrs;
4662 size_t left;
4663
4664 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
4665 present_attrs = 0;
4666 *out_of_range_attrp = 0;
4667 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
4668 uint16_t type = nl_attr_type(nla);
4669 size_t len = nl_attr_get_size(nla);
4670 int expected_len = odp_key_attr_len(ovs_flow_key_attr_lens,
4671 OVS_KEY_ATTR_MAX, type);
4672
4673 if (len != expected_len && expected_len >= 0) {
4674 char namebuf[OVS_KEY_ATTR_BUFSIZE];
4675
4676 VLOG_ERR_RL(&rl, "attribute %s has length %"PRIuSIZE" but should have "
4677 "length %d", ovs_key_attr_to_string(type, namebuf,
4678 sizeof namebuf),
4679 len, expected_len);
4680 return false;
4681 }
4682
4683 if (type > OVS_KEY_ATTR_MAX) {
4684 *out_of_range_attrp = type;
4685 } else {
4686 if (present_attrs & (UINT64_C(1) << type)) {
4687 char namebuf[OVS_KEY_ATTR_BUFSIZE];
4688
4689 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
4690 ovs_key_attr_to_string(type,
4691 namebuf, sizeof namebuf));
4692 return false;
4693 }
4694
4695 present_attrs |= UINT64_C(1) << type;
4696 attrs[type] = nla;
4697 }
4698 }
4699 if (left) {
4700 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
4701 return false;
4702 }
4703
4704 *present_attrsp = present_attrs;
4705 return true;
4706 }
4707
4708 static enum odp_key_fitness
4709 check_expectations(uint64_t present_attrs, int out_of_range_attr,
4710 uint64_t expected_attrs,
4711 const struct nlattr *key, size_t key_len)
4712 {
4713 uint64_t missing_attrs;
4714 uint64_t extra_attrs;
4715
4716 missing_attrs = expected_attrs & ~present_attrs;
4717 if (missing_attrs) {
4718 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
4719 log_odp_key_attributes(&rl, "expected but not present",
4720 missing_attrs, 0, key, key_len);
4721 return ODP_FIT_TOO_LITTLE;
4722 }
4723
4724 extra_attrs = present_attrs & ~expected_attrs;
4725 if (extra_attrs || out_of_range_attr) {
4726 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
4727 log_odp_key_attributes(&rl, "present but not expected",
4728 extra_attrs, out_of_range_attr, key, key_len);
4729 return ODP_FIT_TOO_MUCH;
4730 }
4731
4732 return ODP_FIT_PERFECT;
4733 }
4734
4735 static bool
4736 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
4737 uint64_t present_attrs, uint64_t *expected_attrs,
4738 struct flow *flow, const struct flow *src_flow)
4739 {
4740 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4741 bool is_mask = flow != src_flow;
4742
4743 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
4744 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
4745 if (!is_mask && ntohs(flow->dl_type) < ETH_TYPE_MIN) {
4746 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
4747 ntohs(flow->dl_type));
4748 return false;
4749 }
4750 if (is_mask && ntohs(src_flow->dl_type) < ETH_TYPE_MIN &&
4751 flow->dl_type != htons(0xffff)) {
4752 return false;
4753 }
4754 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
4755 } else {
4756 if (!is_mask) {
4757 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
4758 } else if (ntohs(src_flow->dl_type) < ETH_TYPE_MIN) {
4759 /* See comments in odp_flow_key_from_flow__(). */
4760 VLOG_ERR_RL(&rl, "mask expected for non-Ethernet II frame");
4761 return false;
4762 }
4763 }
4764 return true;
4765 }
4766
4767 static enum odp_key_fitness
4768 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
4769 uint64_t present_attrs, int out_of_range_attr,
4770 uint64_t expected_attrs, struct flow *flow,
4771 const struct nlattr *key, size_t key_len,
4772 const struct flow *src_flow)
4773 {
4774 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4775 bool is_mask = src_flow != flow;
4776 const void *check_start = NULL;
4777 size_t check_len = 0;
4778 enum ovs_key_attr expected_bit = 0xff;
4779
4780 if (eth_type_mpls(src_flow->dl_type)) {
4781 if (!is_mask || present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
4782 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
4783 }
4784 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
4785 size_t size = nl_attr_get_size(attrs[OVS_KEY_ATTR_MPLS]);
4786 const ovs_be32 *mpls_lse = nl_attr_get(attrs[OVS_KEY_ATTR_MPLS]);
4787 int n = size / sizeof(ovs_be32);
4788 int i;
4789
4790 if (!size || size % sizeof(ovs_be32)) {
4791 return ODP_FIT_ERROR;
4792 }
4793 if (flow->mpls_lse[0] && flow->dl_type != htons(0xffff)) {
4794 return ODP_FIT_ERROR;
4795 }
4796
4797 for (i = 0; i < n && i < FLOW_MAX_MPLS_LABELS; i++) {
4798 flow->mpls_lse[i] = mpls_lse[i];
4799 }
4800 if (n > FLOW_MAX_MPLS_LABELS) {
4801 return ODP_FIT_TOO_MUCH;
4802 }
4803
4804 if (!is_mask) {
4805 /* BOS may be set only in the innermost label. */
4806 for (i = 0; i < n - 1; i++) {
4807 if (flow->mpls_lse[i] & htonl(MPLS_BOS_MASK)) {
4808 return ODP_FIT_ERROR;
4809 }
4810 }
4811
4812 /* BOS must be set in the innermost label. */
4813 if (n < FLOW_MAX_MPLS_LABELS
4814 && !(flow->mpls_lse[n - 1] & htonl(MPLS_BOS_MASK))) {
4815 return ODP_FIT_TOO_LITTLE;
4816 }
4817 }
4818 }
4819
4820 goto done;
4821 } else if (src_flow->dl_type == htons(ETH_TYPE_IP)) {
4822 if (!is_mask) {
4823 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
4824 }
4825 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
4826 const struct ovs_key_ipv4 *ipv4_key;
4827
4828 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
4829 put_ipv4_key(ipv4_key, flow, is_mask);
4830 if (flow->nw_frag > FLOW_NW_FRAG_MASK) {
4831 return ODP_FIT_ERROR;
4832 }
4833 if (is_mask) {
4834 check_start = ipv4_key;
4835 check_len = sizeof *ipv4_key;
4836 expected_bit = OVS_KEY_ATTR_IPV4;
4837 }
4838 }
4839 } else if (src_flow->dl_type == htons(ETH_TYPE_IPV6)) {
4840 if (!is_mask) {
4841 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
4842 }
4843 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
4844 const struct ovs_key_ipv6 *ipv6_key;
4845
4846 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
4847 put_ipv6_key(ipv6_key, flow, is_mask);
4848 if (flow->nw_frag > FLOW_NW_FRAG_MASK) {
4849 return ODP_FIT_ERROR;
4850 }
4851 if (is_mask) {
4852 check_start = ipv6_key;
4853 check_len = sizeof *ipv6_key;
4854 expected_bit = OVS_KEY_ATTR_IPV6;
4855 }
4856 }
4857 } else if (src_flow->dl_type == htons(ETH_TYPE_ARP) ||
4858 src_flow->dl_type == htons(ETH_TYPE_RARP)) {
4859 if (!is_mask) {
4860 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
4861 }
4862 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
4863 const struct ovs_key_arp *arp_key;
4864
4865 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
4866 if (!is_mask && (arp_key->arp_op & htons(0xff00))) {
4867 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
4868 "key", ntohs(arp_key->arp_op));
4869 return ODP_FIT_ERROR;
4870 }
4871 put_arp_key(arp_key, flow);
4872 if (is_mask) {
4873 check_start = arp_key;
4874 check_len = sizeof *arp_key;
4875 expected_bit = OVS_KEY_ATTR_ARP;
4876 }
4877 }
4878 } else {
4879 goto done;
4880 }
4881 if (check_len > 0) { /* Happens only when 'is_mask'. */
4882 if (!is_all_zeros(check_start, check_len) &&
4883 flow->dl_type != htons(0xffff)) {
4884 return ODP_FIT_ERROR;
4885 } else {
4886 expected_attrs |= UINT64_C(1) << expected_bit;
4887 }
4888 }
4889
4890 expected_bit = OVS_KEY_ATTR_UNSPEC;
4891 if (src_flow->nw_proto == IPPROTO_TCP
4892 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
4893 src_flow->dl_type == htons(ETH_TYPE_IPV6))
4894 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4895 if (!is_mask) {
4896 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
4897 }
4898 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
4899 const union ovs_key_tp *tcp_key;
4900
4901 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
4902 put_tp_key(tcp_key, flow);
4903 expected_bit = OVS_KEY_ATTR_TCP;
4904 }
4905 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS)) {
4906 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS;
4907 flow->tcp_flags = nl_attr_get_be16(attrs[OVS_KEY_ATTR_TCP_FLAGS]);
4908 }
4909 } else if (src_flow->nw_proto == IPPROTO_UDP
4910 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
4911 src_flow->dl_type == htons(ETH_TYPE_IPV6))
4912 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4913 if (!is_mask) {
4914 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
4915 }
4916 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
4917 const union ovs_key_tp *udp_key;
4918
4919 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
4920 put_tp_key(udp_key, flow);
4921 expected_bit = OVS_KEY_ATTR_UDP;
4922 }
4923 } else if (src_flow->nw_proto == IPPROTO_SCTP
4924 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
4925 src_flow->dl_type == htons(ETH_TYPE_IPV6))
4926 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4927 if (!is_mask) {
4928 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SCTP;
4929 }
4930 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SCTP)) {
4931 const union ovs_key_tp *sctp_key;
4932
4933 sctp_key = nl_attr_get(attrs[OVS_KEY_ATTR_SCTP]);
4934 put_tp_key(sctp_key, flow);
4935 expected_bit = OVS_KEY_ATTR_SCTP;
4936 }
4937 } else if (src_flow->nw_proto == IPPROTO_ICMP
4938 && src_flow->dl_type == htons(ETH_TYPE_IP)
4939 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4940 if (!is_mask) {
4941 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
4942 }
4943 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
4944 const struct ovs_key_icmp *icmp_key;
4945
4946 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
4947 flow->tp_src = htons(icmp_key->icmp_type);
4948 flow->tp_dst = htons(icmp_key->icmp_code);
4949 expected_bit = OVS_KEY_ATTR_ICMP;
4950 }
4951 } else if (src_flow->nw_proto == IPPROTO_ICMPV6
4952 && src_flow->dl_type == htons(ETH_TYPE_IPV6)
4953 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4954 if (!is_mask) {
4955 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
4956 }
4957 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
4958 const struct ovs_key_icmpv6 *icmpv6_key;
4959
4960 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
4961 flow->tp_src = htons(icmpv6_key->icmpv6_type);
4962 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
4963 expected_bit = OVS_KEY_ATTR_ICMPV6;
4964 if (is_nd(src_flow, NULL)) {
4965 if (!is_mask) {
4966 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
4967 }
4968 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
4969 const struct ovs_key_nd *nd_key;
4970
4971 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
4972 memcpy(&flow->nd_target, nd_key->nd_target,
4973 sizeof flow->nd_target);
4974 flow->arp_sha = nd_key->nd_sll;
4975 flow->arp_tha = nd_key->nd_tll;
4976 if (is_mask) {
4977 /* Even though 'tp_src' and 'tp_dst' are 16 bits wide,
4978 * ICMP type and code are 8 bits wide. Therefore, an
4979 * exact match looks like htons(0xff), not
4980 * htons(0xffff). See xlate_wc_finish() for details.
4981 * */
4982 if (!is_all_zeros(nd_key, sizeof *nd_key) &&
4983 (flow->tp_src != htons(0xff) ||
4984 flow->tp_dst != htons(0xff))) {
4985 return ODP_FIT_ERROR;
4986 } else {
4987 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
4988 }
4989 }
4990 }
4991 }
4992 }
4993 }
4994 if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
4995 if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
4996 return ODP_FIT_ERROR;
4997 } else {
4998 expected_attrs |= UINT64_C(1) << expected_bit;
4999 }
5000 }
5001
5002 done:
5003 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
5004 key, key_len);
5005 }
5006
5007 /* Parse 802.1Q header then encapsulated L3 attributes. */
5008 static enum odp_key_fitness
5009 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
5010 uint64_t present_attrs, int out_of_range_attr,
5011 uint64_t expected_attrs, struct flow *flow,
5012 const struct nlattr *key, size_t key_len,
5013 const struct flow *src_flow)
5014 {
5015 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
5016 bool is_mask = src_flow != flow;
5017
5018 const struct nlattr *encap
5019 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
5020 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
5021 enum odp_key_fitness encap_fitness;
5022 enum odp_key_fitness fitness;
5023
5024 /* Calculate fitness of outer attributes. */
5025 if (!is_mask) {
5026 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
5027 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
5028 } else {
5029 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
5030 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
5031 }
5032 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)) {
5033 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_ENCAP);
5034 }
5035 }
5036 fitness = check_expectations(present_attrs, out_of_range_attr,
5037 expected_attrs, key, key_len);
5038
5039 /* Set vlan_tci.
5040 * Remove the TPID from dl_type since it's not the real Ethertype. */
5041 flow->dl_type = htons(0);
5042 flow->vlan_tci = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)
5043 ? nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN])
5044 : htons(0));
5045 if (!is_mask) {
5046 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
5047 return ODP_FIT_TOO_LITTLE;
5048 } else if (flow->vlan_tci == htons(0)) {
5049 /* Corner case for a truncated 802.1Q header. */
5050 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
5051 return ODP_FIT_TOO_MUCH;
5052 }
5053 return fitness;
5054 } else if (!(flow->vlan_tci & htons(VLAN_CFI))) {
5055 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
5056 "but CFI bit is not set", ntohs(flow->vlan_tci));
5057 return ODP_FIT_ERROR;
5058 }
5059 } else {
5060 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))) {
5061 return fitness;
5062 }
5063 }
5064
5065 /* Now parse the encapsulated attributes. */
5066 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
5067 attrs, &present_attrs, &out_of_range_attr)) {
5068 return ODP_FIT_ERROR;
5069 }
5070 expected_attrs = 0;
5071
5072 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow, src_flow)) {
5073 return ODP_FIT_ERROR;
5074 }
5075 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
5076 expected_attrs, flow, key, key_len,
5077 src_flow);
5078
5079 /* The overall fitness is the worse of the outer and inner attributes. */
5080 return MAX(fitness, encap_fitness);
5081 }
5082
5083 static enum odp_key_fitness
5084 odp_flow_key_to_flow__(const struct nlattr *key, size_t key_len,
5085 const struct nlattr *src_key, size_t src_key_len,
5086 struct flow *flow, const struct flow *src_flow,
5087 bool udpif)
5088 {
5089 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
5090 uint64_t expected_attrs;
5091 uint64_t present_attrs;
5092 int out_of_range_attr;
5093 bool is_mask = src_flow != flow;
5094
5095 memset(flow, 0, sizeof *flow);
5096
5097 /* Parse attributes. */
5098 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
5099 &out_of_range_attr)) {
5100 return ODP_FIT_ERROR;
5101 }
5102 expected_attrs = 0;
5103
5104 /* Metadata. */
5105 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID)) {
5106 flow->recirc_id = nl_attr_get_u32(attrs[OVS_KEY_ATTR_RECIRC_ID]);
5107 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID;
5108 } else if (is_mask) {
5109 /* Always exact match recirc_id if it is not specified. */
5110 flow->recirc_id = UINT32_MAX;
5111 }
5112
5113 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_DP_HASH)) {
5114 flow->dp_hash = nl_attr_get_u32(attrs[OVS_KEY_ATTR_DP_HASH]);
5115 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_DP_HASH;
5116 }
5117 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
5118 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
5119 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
5120 }
5121
5122 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
5123 flow->pkt_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
5124 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
5125 }
5126
5127 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_STATE)) {
5128 uint32_t odp_state = nl_attr_get_u32(attrs[OVS_KEY_ATTR_CT_STATE]);
5129
5130 flow->ct_state = odp_to_ovs_ct_state(odp_state);
5131 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_STATE;
5132 }
5133 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_ZONE)) {
5134 flow->ct_zone = nl_attr_get_u16(attrs[OVS_KEY_ATTR_CT_ZONE]);
5135 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_ZONE;
5136 }
5137 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_MARK)) {
5138 flow->ct_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_CT_MARK]);
5139 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_MARK;
5140 }
5141 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_LABELS)) {
5142 const ovs_u128 *cl = nl_attr_get(attrs[OVS_KEY_ATTR_CT_LABELS]);
5143
5144 flow->ct_label = *cl;
5145 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_LABELS;
5146 }
5147
5148 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
5149 enum odp_key_fitness res;
5150
5151 res = odp_tun_key_from_attr__(attrs[OVS_KEY_ATTR_TUNNEL],
5152 is_mask ? src_key : NULL,
5153 src_key_len, &src_flow->tunnel,
5154 &flow->tunnel, udpif);
5155 if (res == ODP_FIT_ERROR) {
5156 return ODP_FIT_ERROR;
5157 } else if (res == ODP_FIT_PERFECT) {
5158 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
5159 }
5160 }
5161
5162 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
5163 flow->in_port.odp_port
5164 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
5165 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
5166 } else if (!is_mask) {
5167 flow->in_port.odp_port = ODPP_NONE;
5168 }
5169
5170 /* Ethernet header. */
5171 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
5172 const struct ovs_key_ethernet *eth_key;
5173
5174 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
5175 put_ethernet_key(eth_key, flow);
5176 if (is_mask) {
5177 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
5178 }
5179 }
5180 if (!is_mask) {
5181 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
5182 }
5183
5184 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
5185 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow,
5186 src_flow)) {
5187 return ODP_FIT_ERROR;
5188 }
5189
5190 if (is_mask
5191 ? (src_flow->vlan_tci & htons(VLAN_CFI)) != 0
5192 : src_flow->dl_type == htons(ETH_TYPE_VLAN)) {
5193 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
5194 expected_attrs, flow, key, key_len, src_flow);
5195 }
5196 if (is_mask) {
5197 /* A missing VLAN mask means exact match on vlan_tci 0 (== no VLAN). */
5198 flow->vlan_tci = htons(0xffff);
5199 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
5200 flow->vlan_tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
5201 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
5202 }
5203 }
5204 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
5205 expected_attrs, flow, key, key_len, src_flow);
5206 }
5207
5208 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
5209 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
5210 * 'key' fits our expectations for what a flow key should contain.
5211 *
5212 * The 'in_port' will be the datapath's understanding of the port. The
5213 * caller will need to translate with odp_port_to_ofp_port() if the
5214 * OpenFlow port is needed.
5215 *
5216 * This function doesn't take the packet itself as an argument because none of
5217 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
5218 * it is always possible to infer which additional attribute(s) should appear
5219 * by looking at the attributes for lower-level protocols, e.g. if the network
5220 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
5221 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
5222 * must be absent. */
5223 enum odp_key_fitness
5224 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
5225 struct flow *flow)
5226 {
5227 return odp_flow_key_to_flow__(key, key_len, NULL, 0, flow, flow, false);
5228 }
5229
5230 static enum odp_key_fitness
5231 odp_flow_key_to_mask__(const struct nlattr *mask_key, size_t mask_key_len,
5232 const struct nlattr *flow_key, size_t flow_key_len,
5233 struct flow_wildcards *mask,
5234 const struct flow *src_flow,
5235 bool udpif)
5236 {
5237 if (mask_key_len) {
5238 return odp_flow_key_to_flow__(mask_key, mask_key_len,
5239 flow_key, flow_key_len,
5240 &mask->masks, src_flow, udpif);
5241
5242 } else {
5243 /* A missing mask means that the flow should be exact matched.
5244 * Generate an appropriate exact wildcard for the flow. */
5245 flow_wildcards_init_for_packet(mask, src_flow);
5246
5247 return ODP_FIT_PERFECT;
5248 }
5249 }
5250 /* Converts the 'mask_key_len' bytes of OVS_KEY_ATTR_* attributes in 'mask_key'
5251 * to a mask structure in 'mask'. 'flow' must be a previously translated flow
5252 * corresponding to 'mask' and similarly flow_key/flow_key_len must be the
5253 * attributes from that flow. Returns an ODP_FIT_* value that indicates how
5254 * well 'key' fits our expectations for what a flow key should contain. */
5255 enum odp_key_fitness
5256 odp_flow_key_to_mask(const struct nlattr *mask_key, size_t mask_key_len,
5257 const struct nlattr *flow_key, size_t flow_key_len,
5258 struct flow_wildcards *mask, const struct flow *flow)
5259 {
5260 return odp_flow_key_to_mask__(mask_key, mask_key_len,
5261 flow_key, flow_key_len,
5262 mask, flow, false);
5263 }
5264
5265 /* These functions are similar to their non-"_udpif" variants but output a
5266 * 'flow' that is suitable for fast-path packet processing.
5267 *
5268 * Some fields have different representation for flow setup and per-
5269 * packet processing (i.e. different between ofproto-dpif and userspace
5270 * datapath). In particular, with the non-"_udpif" functions, struct
5271 * tun_metadata is in the per-flow format (using 'present.map' and 'opts.u8');
5272 * with these functions, struct tun_metadata is in the per-packet format
5273 * (using 'present.len' and 'opts.gnv'). */
5274 enum odp_key_fitness
5275 odp_flow_key_to_flow_udpif(const struct nlattr *key, size_t key_len,
5276 struct flow *flow)
5277 {
5278 return odp_flow_key_to_flow__(key, key_len, NULL, 0, flow, flow, true);
5279 }
5280
5281 enum odp_key_fitness
5282 odp_flow_key_to_mask_udpif(const struct nlattr *mask_key, size_t mask_key_len,
5283 const struct nlattr *flow_key, size_t flow_key_len,
5284 struct flow_wildcards *mask,
5285 const struct flow *flow)
5286 {
5287 return odp_flow_key_to_mask__(mask_key, mask_key_len,
5288 flow_key, flow_key_len,
5289 mask, flow, true);
5290 }
5291
5292 /* Returns 'fitness' as a string, for use in debug messages. */
5293 const char *
5294 odp_key_fitness_to_string(enum odp_key_fitness fitness)
5295 {
5296 switch (fitness) {
5297 case ODP_FIT_PERFECT:
5298 return "OK";
5299 case ODP_FIT_TOO_MUCH:
5300 return "too_much";
5301 case ODP_FIT_TOO_LITTLE:
5302 return "too_little";
5303 case ODP_FIT_ERROR:
5304 return "error";
5305 default:
5306 return "<unknown>";
5307 }
5308 }
5309
5310 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
5311 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
5312 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
5313 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
5314 * null, then the return value is not meaningful.) */
5315 size_t
5316 odp_put_userspace_action(uint32_t pid,
5317 const void *userdata, size_t userdata_size,
5318 odp_port_t tunnel_out_port,
5319 bool include_actions,
5320 struct ofpbuf *odp_actions)
5321 {
5322 size_t userdata_ofs;
5323 size_t offset;
5324
5325 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
5326 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
5327 if (userdata) {
5328 userdata_ofs = odp_actions->size + NLA_HDRLEN;
5329
5330 /* The OVS kernel module before OVS 1.11 and the upstream Linux kernel
5331 * module before Linux 3.10 required the userdata to be exactly 8 bytes
5332 * long:
5333 *
5334 * - The kernel rejected shorter userdata with -ERANGE.
5335 *
5336 * - The kernel silently dropped userdata beyond the first 8 bytes.
5337 *
5338 * Thus, for maximum compatibility, always put at least 8 bytes. (We
5339 * separately disable features that required more than 8 bytes.) */
5340 memcpy(nl_msg_put_unspec_zero(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
5341 MAX(8, userdata_size)),
5342 userdata, userdata_size);
5343 } else {
5344 userdata_ofs = 0;
5345 }
5346 if (tunnel_out_port != ODPP_NONE) {
5347 nl_msg_put_odp_port(odp_actions, OVS_USERSPACE_ATTR_EGRESS_TUN_PORT,
5348 tunnel_out_port);
5349 }
5350 if (include_actions) {
5351 nl_msg_put_flag(odp_actions, OVS_USERSPACE_ATTR_ACTIONS);
5352 }
5353 nl_msg_end_nested(odp_actions, offset);
5354
5355 return userdata_ofs;
5356 }
5357
5358 void
5359 odp_put_tunnel_action(const struct flow_tnl *tunnel,
5360 struct ofpbuf *odp_actions)
5361 {
5362 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
5363 tun_key_to_attr(odp_actions, tunnel, tunnel, NULL);
5364 nl_msg_end_nested(odp_actions, offset);
5365 }
5366
5367 void
5368 odp_put_tnl_push_action(struct ofpbuf *odp_actions,
5369 struct ovs_action_push_tnl *data)
5370 {
5371 int size = offsetof(struct ovs_action_push_tnl, header);
5372
5373 size += data->header_len;
5374 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_TUNNEL_PUSH, data, size);
5375 }
5376
5377 \f
5378 /* The commit_odp_actions() function and its helpers. */
5379
5380 static void
5381 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
5382 const void *key, size_t key_size)
5383 {
5384 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
5385 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
5386 nl_msg_end_nested(odp_actions, offset);
5387 }
5388
5389 /* Masked set actions have a mask following the data within the netlink
5390 * attribute. The unmasked bits in the data will be cleared as the data
5391 * is copied to the action. */
5392 void
5393 commit_masked_set_action(struct ofpbuf *odp_actions,
5394 enum ovs_key_attr key_type,
5395 const void *key_, const void *mask_, size_t key_size)
5396 {
5397 size_t offset = nl_msg_start_nested(odp_actions,
5398 OVS_ACTION_ATTR_SET_MASKED);
5399 char *data = nl_msg_put_unspec_uninit(odp_actions, key_type, key_size * 2);
5400 const char *key = key_, *mask = mask_;
5401
5402 memcpy(data + key_size, mask, key_size);
5403 /* Clear unmasked bits while copying. */
5404 while (key_size--) {
5405 *data++ = *key++ & *mask++;
5406 }
5407 nl_msg_end_nested(odp_actions, offset);
5408 }
5409
5410 /* If any of the flow key data that ODP actions can modify are different in
5411 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
5412 * 'odp_actions' that change the flow tunneling information in key from
5413 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
5414 * same way. In other words, operates the same as commit_odp_actions(), but
5415 * only on tunneling information. */
5416 void
5417 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
5418 struct ofpbuf *odp_actions)
5419 {
5420 /* A valid IPV4_TUNNEL must have non-zero ip_dst; a valid IPv6 tunnel
5421 * must have non-zero ipv6_dst. */
5422 if (flow_tnl_dst_is_set(&flow->tunnel)) {
5423 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
5424 return;
5425 }
5426 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
5427 odp_put_tunnel_action(&base->tunnel, odp_actions);
5428 }
5429 }
5430
5431 static bool
5432 commit(enum ovs_key_attr attr, bool use_masked_set,
5433 const void *key, void *base, void *mask, size_t size,
5434 struct ofpbuf *odp_actions)
5435 {
5436 if (memcmp(key, base, size)) {
5437 bool fully_masked = odp_mask_is_exact(attr, mask, size);
5438
5439 if (use_masked_set && !fully_masked) {
5440 commit_masked_set_action(odp_actions, attr, key, mask, size);
5441 } else {
5442 if (!fully_masked) {
5443 memset(mask, 0xff, size);
5444 }
5445 commit_set_action(odp_actions, attr, key, size);
5446 }
5447 memcpy(base, key, size);
5448 return true;
5449 } else {
5450 /* Mask bits are set when we have either read or set the corresponding
5451 * values. Masked bits will be exact-matched, no need to set them
5452 * if the value did not actually change. */
5453 return false;
5454 }
5455 }
5456
5457 static void
5458 get_ethernet_key(const struct flow *flow, struct ovs_key_ethernet *eth)
5459 {
5460 eth->eth_src = flow->dl_src;
5461 eth->eth_dst = flow->dl_dst;
5462 }
5463
5464 static void
5465 put_ethernet_key(const struct ovs_key_ethernet *eth, struct flow *flow)
5466 {
5467 flow->dl_src = eth->eth_src;
5468 flow->dl_dst = eth->eth_dst;
5469 }
5470
5471 static void
5472 commit_set_ether_addr_action(const struct flow *flow, struct flow *base_flow,
5473 struct ofpbuf *odp_actions,
5474 struct flow_wildcards *wc,
5475 bool use_masked)
5476 {
5477 struct ovs_key_ethernet key, base, mask;
5478
5479 get_ethernet_key(flow, &key);
5480 get_ethernet_key(base_flow, &base);
5481 get_ethernet_key(&wc->masks, &mask);
5482
5483 if (commit(OVS_KEY_ATTR_ETHERNET, use_masked,
5484 &key, &base, &mask, sizeof key, odp_actions)) {
5485 put_ethernet_key(&base, base_flow);
5486 put_ethernet_key(&mask, &wc->masks);
5487 }
5488 }
5489
5490 static void
5491 pop_vlan(struct flow *base,
5492 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5493 {
5494 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
5495
5496 if (base->vlan_tci & htons(VLAN_CFI)) {
5497 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
5498 base->vlan_tci = 0;
5499 }
5500 }
5501
5502 static void
5503 commit_vlan_action(ovs_be16 vlan_tci, struct flow *base,
5504 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5505 {
5506 if (base->vlan_tci == vlan_tci) {
5507 return;
5508 }
5509
5510 pop_vlan(base, odp_actions, wc);
5511 if (vlan_tci & htons(VLAN_CFI)) {
5512 struct ovs_action_push_vlan vlan;
5513
5514 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
5515 vlan.vlan_tci = vlan_tci;
5516 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
5517 &vlan, sizeof vlan);
5518 }
5519 base->vlan_tci = vlan_tci;
5520 }
5521
5522 /* Wildcarding already done at action translation time. */
5523 static void
5524 commit_mpls_action(const struct flow *flow, struct flow *base,
5525 struct ofpbuf *odp_actions)
5526 {
5527 int base_n = flow_count_mpls_labels(base, NULL);
5528 int flow_n = flow_count_mpls_labels(flow, NULL);
5529 int common_n = flow_count_common_mpls_labels(flow, flow_n, base, base_n,
5530 NULL);
5531
5532 while (base_n > common_n) {
5533 if (base_n - 1 == common_n && flow_n > common_n) {
5534 /* If there is only one more LSE in base than there are common
5535 * between base and flow; and flow has at least one more LSE than
5536 * is common then the topmost LSE of base may be updated using
5537 * set */
5538 struct ovs_key_mpls mpls_key;
5539
5540 mpls_key.mpls_lse = flow->mpls_lse[flow_n - base_n];
5541 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
5542 &mpls_key, sizeof mpls_key);
5543 flow_set_mpls_lse(base, 0, mpls_key.mpls_lse);
5544 common_n++;
5545 } else {
5546 /* Otherwise, if there more LSEs in base than are common between
5547 * base and flow then pop the topmost one. */
5548 ovs_be16 dl_type;
5549 bool popped;
5550
5551 /* If all the LSEs are to be popped and this is not the outermost
5552 * LSE then use ETH_TYPE_MPLS as the ethertype parameter of the
5553 * POP_MPLS action instead of flow->dl_type.
5554 *
5555 * This is because the POP_MPLS action requires its ethertype
5556 * argument to be an MPLS ethernet type but in this case
5557 * flow->dl_type will be a non-MPLS ethernet type.
5558 *
5559 * When the final POP_MPLS action occurs it use flow->dl_type and
5560 * the and the resulting packet will have the desired dl_type. */
5561 if ((!eth_type_mpls(flow->dl_type)) && base_n > 1) {
5562 dl_type = htons(ETH_TYPE_MPLS);
5563 } else {
5564 dl_type = flow->dl_type;
5565 }
5566 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, dl_type);
5567 popped = flow_pop_mpls(base, base_n, flow->dl_type, NULL);
5568 ovs_assert(popped);
5569 base_n--;
5570 }
5571 }
5572
5573 /* If, after the above popping and setting, there are more LSEs in flow
5574 * than base then some LSEs need to be pushed. */
5575 while (base_n < flow_n) {
5576 struct ovs_action_push_mpls *mpls;
5577
5578 mpls = nl_msg_put_unspec_zero(odp_actions,
5579 OVS_ACTION_ATTR_PUSH_MPLS,
5580 sizeof *mpls);
5581 mpls->mpls_ethertype = flow->dl_type;
5582 mpls->mpls_lse = flow->mpls_lse[flow_n - base_n - 1];
5583 flow_push_mpls(base, base_n, mpls->mpls_ethertype, NULL);
5584 flow_set_mpls_lse(base, 0, mpls->mpls_lse);
5585 base_n++;
5586 }
5587 }
5588
5589 static void
5590 get_ipv4_key(const struct flow *flow, struct ovs_key_ipv4 *ipv4, bool is_mask)
5591 {
5592 ipv4->ipv4_src = flow->nw_src;
5593 ipv4->ipv4_dst = flow->nw_dst;
5594 ipv4->ipv4_proto = flow->nw_proto;
5595 ipv4->ipv4_tos = flow->nw_tos;
5596 ipv4->ipv4_ttl = flow->nw_ttl;
5597 ipv4->ipv4_frag = ovs_to_odp_frag(flow->nw_frag, is_mask);
5598 }
5599
5600 static void
5601 put_ipv4_key(const struct ovs_key_ipv4 *ipv4, struct flow *flow, bool is_mask)
5602 {
5603 flow->nw_src = ipv4->ipv4_src;
5604 flow->nw_dst = ipv4->ipv4_dst;
5605 flow->nw_proto = ipv4->ipv4_proto;
5606 flow->nw_tos = ipv4->ipv4_tos;
5607 flow->nw_ttl = ipv4->ipv4_ttl;
5608 flow->nw_frag = odp_to_ovs_frag(ipv4->ipv4_frag, is_mask);
5609 }
5610
5611 static void
5612 commit_set_ipv4_action(const struct flow *flow, struct flow *base_flow,
5613 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5614 bool use_masked)
5615 {
5616 struct ovs_key_ipv4 key, mask, base;
5617
5618 /* Check that nw_proto and nw_frag remain unchanged. */
5619 ovs_assert(flow->nw_proto == base_flow->nw_proto &&
5620 flow->nw_frag == base_flow->nw_frag);
5621
5622 get_ipv4_key(flow, &key, false);
5623 get_ipv4_key(base_flow, &base, false);
5624 get_ipv4_key(&wc->masks, &mask, true);
5625 mask.ipv4_proto = 0; /* Not writeable. */
5626 mask.ipv4_frag = 0; /* Not writable. */
5627
5628 if (commit(OVS_KEY_ATTR_IPV4, use_masked, &key, &base, &mask, sizeof key,
5629 odp_actions)) {
5630 put_ipv4_key(&base, base_flow, false);
5631 if (mask.ipv4_proto != 0) { /* Mask was changed by commit(). */
5632 put_ipv4_key(&mask, &wc->masks, true);
5633 }
5634 }
5635 }
5636
5637 static void
5638 get_ipv6_key(const struct flow *flow, struct ovs_key_ipv6 *ipv6, bool is_mask)
5639 {
5640 memcpy(ipv6->ipv6_src, &flow->ipv6_src, sizeof ipv6->ipv6_src);
5641 memcpy(ipv6->ipv6_dst, &flow->ipv6_dst, sizeof ipv6->ipv6_dst);
5642 ipv6->ipv6_label = flow->ipv6_label;
5643 ipv6->ipv6_proto = flow->nw_proto;
5644 ipv6->ipv6_tclass = flow->nw_tos;
5645 ipv6->ipv6_hlimit = flow->nw_ttl;
5646 ipv6->ipv6_frag = ovs_to_odp_frag(flow->nw_frag, is_mask);
5647 }
5648
5649 static void
5650 put_ipv6_key(const struct ovs_key_ipv6 *ipv6, struct flow *flow, bool is_mask)
5651 {
5652 memcpy(&flow->ipv6_src, ipv6->ipv6_src, sizeof flow->ipv6_src);
5653 memcpy(&flow->ipv6_dst, ipv6->ipv6_dst, sizeof flow->ipv6_dst);
5654 flow->ipv6_label = ipv6->ipv6_label;
5655 flow->nw_proto = ipv6->ipv6_proto;
5656 flow->nw_tos = ipv6->ipv6_tclass;
5657 flow->nw_ttl = ipv6->ipv6_hlimit;
5658 flow->nw_frag = odp_to_ovs_frag(ipv6->ipv6_frag, is_mask);
5659 }
5660
5661 static void
5662 commit_set_ipv6_action(const struct flow *flow, struct flow *base_flow,
5663 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5664 bool use_masked)
5665 {
5666 struct ovs_key_ipv6 key, mask, base;
5667
5668 /* Check that nw_proto and nw_frag remain unchanged. */
5669 ovs_assert(flow->nw_proto == base_flow->nw_proto &&
5670 flow->nw_frag == base_flow->nw_frag);
5671
5672 get_ipv6_key(flow, &key, false);
5673 get_ipv6_key(base_flow, &base, false);
5674 get_ipv6_key(&wc->masks, &mask, true);
5675 mask.ipv6_proto = 0; /* Not writeable. */
5676 mask.ipv6_frag = 0; /* Not writable. */
5677
5678 if (commit(OVS_KEY_ATTR_IPV6, use_masked, &key, &base, &mask, sizeof key,
5679 odp_actions)) {
5680 put_ipv6_key(&base, base_flow, false);
5681 if (mask.ipv6_proto != 0) { /* Mask was changed by commit(). */
5682 put_ipv6_key(&mask, &wc->masks, true);
5683 }
5684 }
5685 }
5686
5687 static void
5688 get_arp_key(const struct flow *flow, struct ovs_key_arp *arp)
5689 {
5690 /* ARP key has padding, clear it. */
5691 memset(arp, 0, sizeof *arp);
5692
5693 arp->arp_sip = flow->nw_src;
5694 arp->arp_tip = flow->nw_dst;
5695 arp->arp_op = htons(flow->nw_proto);
5696 arp->arp_sha = flow->arp_sha;
5697 arp->arp_tha = flow->arp_tha;
5698 }
5699
5700 static void
5701 put_arp_key(const struct ovs_key_arp *arp, struct flow *flow)
5702 {
5703 flow->nw_src = arp->arp_sip;
5704 flow->nw_dst = arp->arp_tip;
5705 flow->nw_proto = ntohs(arp->arp_op);
5706 flow->arp_sha = arp->arp_sha;
5707 flow->arp_tha = arp->arp_tha;
5708 }
5709
5710 static enum slow_path_reason
5711 commit_set_arp_action(const struct flow *flow, struct flow *base_flow,
5712 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5713 {
5714 struct ovs_key_arp key, mask, base;
5715
5716 get_arp_key(flow, &key);
5717 get_arp_key(base_flow, &base);
5718 get_arp_key(&wc->masks, &mask);
5719
5720 if (commit(OVS_KEY_ATTR_ARP, true, &key, &base, &mask, sizeof key,
5721 odp_actions)) {
5722 put_arp_key(&base, base_flow);
5723 put_arp_key(&mask, &wc->masks);
5724 return SLOW_ACTION;
5725 }
5726 return 0;
5727 }
5728
5729 static void
5730 get_icmp_key(const struct flow *flow, struct ovs_key_icmp *icmp)
5731 {
5732 /* icmp_type and icmp_code are stored in tp_src and tp_dst, respectively */
5733 icmp->icmp_type = ntohs(flow->tp_src);
5734 icmp->icmp_code = ntohs(flow->tp_dst);
5735 }
5736
5737 static void
5738 put_icmp_key(const struct ovs_key_icmp *icmp, struct flow *flow)
5739 {
5740 /* icmp_type and icmp_code are stored in tp_src and tp_dst, respectively */
5741 flow->tp_src = htons(icmp->icmp_type);
5742 flow->tp_dst = htons(icmp->icmp_code);
5743 }
5744
5745 static enum slow_path_reason
5746 commit_set_icmp_action(const struct flow *flow, struct flow *base_flow,
5747 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5748 {
5749 struct ovs_key_icmp key, mask, base;
5750 enum ovs_key_attr attr;
5751
5752 if (is_icmpv4(flow, NULL)) {
5753 attr = OVS_KEY_ATTR_ICMP;
5754 } else if (is_icmpv6(flow, NULL)) {
5755 attr = OVS_KEY_ATTR_ICMPV6;
5756 } else {
5757 return 0;
5758 }
5759
5760 get_icmp_key(flow, &key);
5761 get_icmp_key(base_flow, &base);
5762 get_icmp_key(&wc->masks, &mask);
5763
5764 if (commit(attr, false, &key, &base, &mask, sizeof key, odp_actions)) {
5765 put_icmp_key(&base, base_flow);
5766 put_icmp_key(&mask, &wc->masks);
5767 return SLOW_ACTION;
5768 }
5769 return 0;
5770 }
5771
5772 static void
5773 get_nd_key(const struct flow *flow, struct ovs_key_nd *nd)
5774 {
5775 memcpy(nd->nd_target, &flow->nd_target, sizeof flow->nd_target);
5776 /* nd_sll and nd_tll are stored in arp_sha and arp_tha, respectively */
5777 nd->nd_sll = flow->arp_sha;
5778 nd->nd_tll = flow->arp_tha;
5779 }
5780
5781 static void
5782 put_nd_key(const struct ovs_key_nd *nd, struct flow *flow)
5783 {
5784 memcpy(&flow->nd_target, nd->nd_target, sizeof flow->nd_target);
5785 /* nd_sll and nd_tll are stored in arp_sha and arp_tha, respectively */
5786 flow->arp_sha = nd->nd_sll;
5787 flow->arp_tha = nd->nd_tll;
5788 }
5789
5790 static enum slow_path_reason
5791 commit_set_nd_action(const struct flow *flow, struct flow *base_flow,
5792 struct ofpbuf *odp_actions,
5793 struct flow_wildcards *wc, bool use_masked)
5794 {
5795 struct ovs_key_nd key, mask, base;
5796
5797 get_nd_key(flow, &key);
5798 get_nd_key(base_flow, &base);
5799 get_nd_key(&wc->masks, &mask);
5800
5801 if (commit(OVS_KEY_ATTR_ND, use_masked, &key, &base, &mask, sizeof key,
5802 odp_actions)) {
5803 put_nd_key(&base, base_flow);
5804 put_nd_key(&mask, &wc->masks);
5805 return SLOW_ACTION;
5806 }
5807
5808 return 0;
5809 }
5810
5811 static enum slow_path_reason
5812 commit_set_nw_action(const struct flow *flow, struct flow *base,
5813 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5814 bool use_masked)
5815 {
5816 /* Check if 'flow' really has an L3 header. */
5817 if (!flow->nw_proto) {
5818 return 0;
5819 }
5820
5821 switch (ntohs(base->dl_type)) {
5822 case ETH_TYPE_IP:
5823 commit_set_ipv4_action(flow, base, odp_actions, wc, use_masked);
5824 break;
5825
5826 case ETH_TYPE_IPV6:
5827 commit_set_ipv6_action(flow, base, odp_actions, wc, use_masked);
5828 return commit_set_nd_action(flow, base, odp_actions, wc, use_masked);
5829
5830 case ETH_TYPE_ARP:
5831 return commit_set_arp_action(flow, base, odp_actions, wc);
5832 }
5833
5834 return 0;
5835 }
5836
5837 /* TCP, UDP, and SCTP keys have the same layout. */
5838 BUILD_ASSERT_DECL(sizeof(struct ovs_key_tcp) == sizeof(struct ovs_key_udp) &&
5839 sizeof(struct ovs_key_tcp) == sizeof(struct ovs_key_sctp));
5840
5841 static void
5842 get_tp_key(const struct flow *flow, union ovs_key_tp *tp)
5843 {
5844 tp->tcp.tcp_src = flow->tp_src;
5845 tp->tcp.tcp_dst = flow->tp_dst;
5846 }
5847
5848 static void
5849 put_tp_key(const union ovs_key_tp *tp, struct flow *flow)
5850 {
5851 flow->tp_src = tp->tcp.tcp_src;
5852 flow->tp_dst = tp->tcp.tcp_dst;
5853 }
5854
5855 static void
5856 commit_set_port_action(const struct flow *flow, struct flow *base_flow,
5857 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5858 bool use_masked)
5859 {
5860 enum ovs_key_attr key_type;
5861 union ovs_key_tp key, mask, base;
5862
5863 /* Check if 'flow' really has an L3 header. */
5864 if (!flow->nw_proto) {
5865 return;
5866 }
5867
5868 if (!is_ip_any(base_flow)) {
5869 return;
5870 }
5871
5872 if (flow->nw_proto == IPPROTO_TCP) {
5873 key_type = OVS_KEY_ATTR_TCP;
5874 } else if (flow->nw_proto == IPPROTO_UDP) {
5875 key_type = OVS_KEY_ATTR_UDP;
5876 } else if (flow->nw_proto == IPPROTO_SCTP) {
5877 key_type = OVS_KEY_ATTR_SCTP;
5878 } else {
5879 return;
5880 }
5881
5882 get_tp_key(flow, &key);
5883 get_tp_key(base_flow, &base);
5884 get_tp_key(&wc->masks, &mask);
5885
5886 if (commit(key_type, use_masked, &key, &base, &mask, sizeof key,
5887 odp_actions)) {
5888 put_tp_key(&base, base_flow);
5889 put_tp_key(&mask, &wc->masks);
5890 }
5891 }
5892
5893 static void
5894 commit_set_priority_action(const struct flow *flow, struct flow *base_flow,
5895 struct ofpbuf *odp_actions,
5896 struct flow_wildcards *wc,
5897 bool use_masked)
5898 {
5899 uint32_t key, mask, base;
5900
5901 key = flow->skb_priority;
5902 base = base_flow->skb_priority;
5903 mask = wc->masks.skb_priority;
5904
5905 if (commit(OVS_KEY_ATTR_PRIORITY, use_masked, &key, &base, &mask,
5906 sizeof key, odp_actions)) {
5907 base_flow->skb_priority = base;
5908 wc->masks.skb_priority = mask;
5909 }
5910 }
5911
5912 static void
5913 commit_set_pkt_mark_action(const struct flow *flow, struct flow *base_flow,
5914 struct ofpbuf *odp_actions,
5915 struct flow_wildcards *wc,
5916 bool use_masked)
5917 {
5918 uint32_t key, mask, base;
5919
5920 key = flow->pkt_mark;
5921 base = base_flow->pkt_mark;
5922 mask = wc->masks.pkt_mark;
5923
5924 if (commit(OVS_KEY_ATTR_SKB_MARK, use_masked, &key, &base, &mask,
5925 sizeof key, odp_actions)) {
5926 base_flow->pkt_mark = base;
5927 wc->masks.pkt_mark = mask;
5928 }
5929 }
5930
5931 /* If any of the flow key data that ODP actions can modify are different in
5932 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
5933 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
5934 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
5935 * in addition to this function if needed. Sets fields in 'wc' that are
5936 * used as part of the action.
5937 *
5938 * Returns a reason to force processing the flow's packets into the userspace
5939 * slow path, if there is one, otherwise 0. */
5940 enum slow_path_reason
5941 commit_odp_actions(const struct flow *flow, struct flow *base,
5942 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5943 bool use_masked)
5944 {
5945 enum slow_path_reason slow1, slow2;
5946
5947 commit_set_ether_addr_action(flow, base, odp_actions, wc, use_masked);
5948 slow1 = commit_set_nw_action(flow, base, odp_actions, wc, use_masked);
5949 commit_set_port_action(flow, base, odp_actions, wc, use_masked);
5950 slow2 = commit_set_icmp_action(flow, base, odp_actions, wc);
5951 commit_mpls_action(flow, base, odp_actions);
5952 commit_vlan_action(flow->vlan_tci, base, odp_actions, wc);
5953 commit_set_priority_action(flow, base, odp_actions, wc, use_masked);
5954 commit_set_pkt_mark_action(flow, base, odp_actions, wc, use_masked);
5955
5956 return slow1 ? slow1 : slow2;
5957 }
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