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