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