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odp-util: Format and scan multiple MPLS labels.
[ovs.git] / lib / odp-util.c
1 /*
2 * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <config.h>
18 #include <arpa/inet.h>
19 #include "odp-util.h"
20 #include <errno.h>
21 #include <inttypes.h>
22 #include <math.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
25 #include <netinet/ip6.h>
26 #include <stdlib.h>
27 #include <string.h>
28
29 #include "byte-order.h"
30 #include "coverage.h"
31 #include "dpif.h"
32 #include "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 for (int i = 0; i < n; i++) {
390 ovs_be32 key = mpls_key[i].mpls_lse;
391
392 if (mpls_mask == NULL) {
393 format_mpls_lse(ds, key);
394 } else {
395 ovs_be32 mask = mpls_mask[i].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 ds_put_char(ds, ',');
404 }
405 ds_chomp(ds, ',');
406 }
407
408 static void
409 format_odp_recirc_action(struct ds *ds, uint32_t recirc_id)
410 {
411 ds_put_format(ds, "recirc(%#"PRIx32")", recirc_id);
412 }
413
414 static void
415 format_odp_hash_action(struct ds *ds, const struct ovs_action_hash *hash_act)
416 {
417 ds_put_format(ds, "hash(");
418
419 if (hash_act->hash_alg == OVS_HASH_ALG_L4) {
420 ds_put_format(ds, "hash_l4(%"PRIu32")", hash_act->hash_basis);
421 } else {
422 ds_put_format(ds, "Unknown hash algorithm(%"PRIu32")",
423 hash_act->hash_alg);
424 }
425 ds_put_format(ds, ")");
426 }
427
428 static const void *
429 format_udp_tnl_push_header(struct ds *ds, const struct udp_header *udp)
430 {
431 ds_put_format(ds, "udp(src=%"PRIu16",dst=%"PRIu16",csum=0x%"PRIx16"),",
432 ntohs(udp->udp_src), ntohs(udp->udp_dst),
433 ntohs(udp->udp_csum));
434
435 return udp + 1;
436 }
437
438 static void
439 format_odp_tnl_push_header(struct ds *ds, struct ovs_action_push_tnl *data)
440 {
441 const struct eth_header *eth;
442 const void *l3;
443 const void *l4;
444 const struct udp_header *udp;
445
446 eth = (const struct eth_header *)data->header;
447
448 l3 = eth + 1;
449
450 /* Ethernet */
451 ds_put_format(ds, "header(size=%"PRIu8",type=%"PRIu8",eth(dst=",
452 data->header_len, data->tnl_type);
453 ds_put_format(ds, ETH_ADDR_FMT, ETH_ADDR_ARGS(eth->eth_dst));
454 ds_put_format(ds, ",src=");
455 ds_put_format(ds, ETH_ADDR_FMT, ETH_ADDR_ARGS(eth->eth_src));
456 ds_put_format(ds, ",dl_type=0x%04"PRIx16"),", ntohs(eth->eth_type));
457
458 if (eth->eth_type == htons(ETH_TYPE_IP)) {
459 /* IPv4 */
460 const struct ip_header *ip;
461 ip = (const struct ip_header *) l3;
462 ds_put_format(ds, "ipv4(src="IP_FMT",dst="IP_FMT",proto=%"PRIu8
463 ",tos=%#"PRIx8",ttl=%"PRIu8",frag=0x%"PRIx16"),",
464 IP_ARGS(get_16aligned_be32(&ip->ip_src)),
465 IP_ARGS(get_16aligned_be32(&ip->ip_dst)),
466 ip->ip_proto, ip->ip_tos,
467 ip->ip_ttl,
468 ntohs(ip->ip_frag_off));
469 l4 = (ip + 1);
470 } else {
471 const struct ip6_hdr *ip6;
472 ip6 = (const struct ip6_hdr *) l3;
473 ds_put_format(ds, "ipv6(src=");
474 ipv6_format_addr(&ip6->ip6_src, ds);
475 ds_put_format(ds, ",dst=");
476 ipv6_format_addr(&ip6->ip6_dst, ds);
477 ds_put_format(ds, ",label=%i,proto=%"PRIu8",tclass=0x%"PRIx8
478 ",hlimit=%"PRIu8"),",
479 ntohl(ip6->ip6_flow) & IPV6_LABEL_MASK, ip6->ip6_nxt,
480 (ntohl(ip6->ip6_flow) >> 20) & 0xff, ip6->ip6_hlim);
481 l4 = (ip6 + 1);
482 }
483
484 udp = (const struct udp_header *) l4;
485
486 if (data->tnl_type == OVS_VPORT_TYPE_VXLAN) {
487 const struct vxlanhdr *vxh;
488
489 vxh = format_udp_tnl_push_header(ds, udp);
490
491 ds_put_format(ds, "vxlan(flags=0x%"PRIx32",vni=0x%"PRIx32")",
492 ntohl(get_16aligned_be32(&vxh->vx_flags)),
493 ntohl(get_16aligned_be32(&vxh->vx_vni)) >> 8);
494 } else if (data->tnl_type == OVS_VPORT_TYPE_GENEVE) {
495 const struct genevehdr *gnh;
496
497 gnh = format_udp_tnl_push_header(ds, udp);
498
499 ds_put_format(ds, "geneve(%s%svni=0x%"PRIx32,
500 gnh->oam ? "oam," : "",
501 gnh->critical ? "crit," : "",
502 ntohl(get_16aligned_be32(&gnh->vni)) >> 8);
503
504 if (gnh->opt_len) {
505 ds_put_cstr(ds, ",options(");
506 format_geneve_opts(gnh->options, NULL, gnh->opt_len * 4,
507 ds, false);
508 ds_put_char(ds, ')');
509 }
510
511 ds_put_char(ds, ')');
512 } else if (data->tnl_type == OVS_VPORT_TYPE_GRE) {
513 const struct gre_base_hdr *greh;
514 ovs_16aligned_be32 *options;
515
516 greh = (const struct gre_base_hdr *) l4;
517
518 ds_put_format(ds, "gre((flags=0x%"PRIx16",proto=0x%"PRIx16")",
519 ntohs(greh->flags), ntohs(greh->protocol));
520 options = (ovs_16aligned_be32 *)(greh + 1);
521 if (greh->flags & htons(GRE_CSUM)) {
522 ds_put_format(ds, ",csum=0x%"PRIx16, ntohs(*((ovs_be16 *)options)));
523 options++;
524 }
525 if (greh->flags & htons(GRE_KEY)) {
526 ds_put_format(ds, ",key=0x%"PRIx32, ntohl(get_16aligned_be32(options)));
527 options++;
528 }
529 if (greh->flags & htons(GRE_SEQ)) {
530 ds_put_format(ds, ",seq=0x%"PRIx32, ntohl(get_16aligned_be32(options)));
531 options++;
532 }
533 ds_put_format(ds, ")");
534 }
535 ds_put_format(ds, ")");
536 }
537
538 static void
539 format_odp_tnl_push_action(struct ds *ds, const struct nlattr *attr)
540 {
541 struct ovs_action_push_tnl *data;
542
543 data = (struct ovs_action_push_tnl *) nl_attr_get(attr);
544
545 ds_put_format(ds, "tnl_push(tnl_port(%"PRIu32"),", data->tnl_port);
546 format_odp_tnl_push_header(ds, data);
547 ds_put_format(ds, ",out_port(%"PRIu32"))", data->out_port);
548 }
549
550 static const struct nl_policy ovs_nat_policy[] = {
551 [OVS_NAT_ATTR_SRC] = { .type = NL_A_FLAG, .optional = true, },
552 [OVS_NAT_ATTR_DST] = { .type = NL_A_FLAG, .optional = true, },
553 [OVS_NAT_ATTR_IP_MIN] = { .type = NL_A_UNSPEC, .optional = true,
554 .min_len = sizeof(struct in_addr),
555 .max_len = sizeof(struct in6_addr)},
556 [OVS_NAT_ATTR_IP_MAX] = { .type = NL_A_UNSPEC, .optional = true,
557 .min_len = sizeof(struct in_addr),
558 .max_len = sizeof(struct in6_addr)},
559 [OVS_NAT_ATTR_PROTO_MIN] = { .type = NL_A_U16, .optional = true, },
560 [OVS_NAT_ATTR_PROTO_MAX] = { .type = NL_A_U16, .optional = true, },
561 [OVS_NAT_ATTR_PERSISTENT] = { .type = NL_A_FLAG, .optional = true, },
562 [OVS_NAT_ATTR_PROTO_HASH] = { .type = NL_A_FLAG, .optional = true, },
563 [OVS_NAT_ATTR_PROTO_RANDOM] = { .type = NL_A_FLAG, .optional = true, },
564 };
565
566 static void
567 format_odp_ct_nat(struct ds *ds, const struct nlattr *attr)
568 {
569 struct nlattr *a[ARRAY_SIZE(ovs_nat_policy)];
570 size_t addr_len;
571 ovs_be32 ip_min, ip_max;
572 struct in6_addr ip6_min, ip6_max;
573 uint16_t proto_min, proto_max;
574
575 if (!nl_parse_nested(attr, ovs_nat_policy, a, ARRAY_SIZE(a))) {
576 ds_put_cstr(ds, "nat(error: nl_parse_nested() failed.)");
577 return;
578 }
579 /* If no type, then nothing else either. */
580 if (!(a[OVS_NAT_ATTR_SRC] || a[OVS_NAT_ATTR_DST])
581 && (a[OVS_NAT_ATTR_IP_MIN] || a[OVS_NAT_ATTR_IP_MAX]
582 || a[OVS_NAT_ATTR_PROTO_MIN] || a[OVS_NAT_ATTR_PROTO_MAX]
583 || a[OVS_NAT_ATTR_PERSISTENT] || a[OVS_NAT_ATTR_PROTO_HASH]
584 || a[OVS_NAT_ATTR_PROTO_RANDOM])) {
585 ds_put_cstr(ds, "nat(error: options allowed only with \"src\" or \"dst\")");
586 return;
587 }
588 /* Both SNAT & DNAT may not be specified. */
589 if (a[OVS_NAT_ATTR_SRC] && a[OVS_NAT_ATTR_DST]) {
590 ds_put_cstr(ds, "nat(error: Only one of \"src\" or \"dst\" may be present.)");
591 return;
592 }
593 /* proto may not appear without ip. */
594 if (!a[OVS_NAT_ATTR_IP_MIN] && a[OVS_NAT_ATTR_PROTO_MIN]) {
595 ds_put_cstr(ds, "nat(error: proto but no IP.)");
596 return;
597 }
598 /* MAX may not appear without MIN. */
599 if ((!a[OVS_NAT_ATTR_IP_MIN] && a[OVS_NAT_ATTR_IP_MAX])
600 || (!a[OVS_NAT_ATTR_PROTO_MIN] && a[OVS_NAT_ATTR_PROTO_MAX])) {
601 ds_put_cstr(ds, "nat(error: range max without min.)");
602 return;
603 }
604 /* Address sizes must match. */
605 if ((a[OVS_NAT_ATTR_IP_MIN]
606 && (nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN]) != sizeof(ovs_be32) &&
607 nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN]) != sizeof(struct in6_addr)))
608 || (a[OVS_NAT_ATTR_IP_MIN] && a[OVS_NAT_ATTR_IP_MAX]
609 && (nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN])
610 != nl_attr_get_size(a[OVS_NAT_ATTR_IP_MAX])))) {
611 ds_put_cstr(ds, "nat(error: IP address sizes do not match)");
612 return;
613 }
614
615 addr_len = a[OVS_NAT_ATTR_IP_MIN]
616 ? nl_attr_get_size(a[OVS_NAT_ATTR_IP_MIN]) : 0;
617 ip_min = addr_len == sizeof(ovs_be32) && a[OVS_NAT_ATTR_IP_MIN]
618 ? nl_attr_get_be32(a[OVS_NAT_ATTR_IP_MIN]) : 0;
619 ip_max = addr_len == sizeof(ovs_be32) && a[OVS_NAT_ATTR_IP_MAX]
620 ? nl_attr_get_be32(a[OVS_NAT_ATTR_IP_MAX]) : 0;
621 if (addr_len == sizeof ip6_min) {
622 ip6_min = a[OVS_NAT_ATTR_IP_MIN]
623 ? *(struct in6_addr *)nl_attr_get(a[OVS_NAT_ATTR_IP_MIN])
624 : in6addr_any;
625 ip6_max = a[OVS_NAT_ATTR_IP_MAX]
626 ? *(struct in6_addr *)nl_attr_get(a[OVS_NAT_ATTR_IP_MAX])
627 : in6addr_any;
628 }
629 proto_min = a[OVS_NAT_ATTR_PROTO_MIN]
630 ? nl_attr_get_u16(a[OVS_NAT_ATTR_PROTO_MIN]) : 0;
631 proto_max = a[OVS_NAT_ATTR_PROTO_MAX]
632 ? nl_attr_get_u16(a[OVS_NAT_ATTR_PROTO_MAX]) : 0;
633
634 if ((addr_len == sizeof(ovs_be32)
635 && ip_max && ntohl(ip_min) > ntohl(ip_max))
636 || (addr_len == sizeof(struct in6_addr)
637 && !ipv6_mask_is_any(&ip6_max)
638 && memcmp(&ip6_min, &ip6_max, sizeof ip6_min) > 0)
639 || (proto_max && proto_min > proto_max)) {
640 ds_put_cstr(ds, "nat(range error)");
641 return;
642 }
643
644 ds_put_cstr(ds, "nat");
645 if (a[OVS_NAT_ATTR_SRC] || a[OVS_NAT_ATTR_DST]) {
646 ds_put_char(ds, '(');
647 if (a[OVS_NAT_ATTR_SRC]) {
648 ds_put_cstr(ds, "src");
649 } else if (a[OVS_NAT_ATTR_DST]) {
650 ds_put_cstr(ds, "dst");
651 }
652
653 if (addr_len > 0) {
654 ds_put_cstr(ds, "=");
655
656 if (addr_len == sizeof ip_min) {
657 ds_put_format(ds, IP_FMT, IP_ARGS(ip_min));
658
659 if (ip_max && ip_max != ip_min) {
660 ds_put_format(ds, "-"IP_FMT, IP_ARGS(ip_max));
661 }
662 } else if (addr_len == sizeof ip6_min) {
663 ipv6_format_addr_bracket(&ip6_min, ds, proto_min);
664
665 if (!ipv6_mask_is_any(&ip6_max) &&
666 memcmp(&ip6_max, &ip6_min, sizeof ip6_max) != 0) {
667 ds_put_char(ds, '-');
668 ipv6_format_addr_bracket(&ip6_max, ds, proto_min);
669 }
670 }
671 if (proto_min) {
672 ds_put_format(ds, ":%"PRIu16, proto_min);
673
674 if (proto_max && proto_max != proto_min) {
675 ds_put_format(ds, "-%"PRIu16, proto_max);
676 }
677 }
678 }
679 ds_put_char(ds, ',');
680 if (a[OVS_NAT_ATTR_PERSISTENT]) {
681 ds_put_cstr(ds, "persistent,");
682 }
683 if (a[OVS_NAT_ATTR_PROTO_HASH]) {
684 ds_put_cstr(ds, "hash,");
685 }
686 if (a[OVS_NAT_ATTR_PROTO_RANDOM]) {
687 ds_put_cstr(ds, "random,");
688 }
689 ds_chomp(ds, ',');
690 ds_put_char(ds, ')');
691 }
692 }
693
694 static const struct nl_policy ovs_conntrack_policy[] = {
695 [OVS_CT_ATTR_COMMIT] = { .type = NL_A_FLAG, .optional = true, },
696 [OVS_CT_ATTR_ZONE] = { .type = NL_A_U16, .optional = true, },
697 [OVS_CT_ATTR_MARK] = { .type = NL_A_UNSPEC, .optional = true,
698 .min_len = sizeof(uint32_t) * 2 },
699 [OVS_CT_ATTR_LABELS] = { .type = NL_A_UNSPEC, .optional = true,
700 .min_len = sizeof(struct ovs_key_ct_labels) * 2 },
701 [OVS_CT_ATTR_HELPER] = { .type = NL_A_STRING, .optional = true,
702 .min_len = 1, .max_len = 16 },
703 [OVS_CT_ATTR_NAT] = { .type = NL_A_UNSPEC, .optional = true },
704 };
705
706 static void
707 format_odp_conntrack_action(struct ds *ds, const struct nlattr *attr)
708 {
709 struct nlattr *a[ARRAY_SIZE(ovs_conntrack_policy)];
710 const ovs_u128 *label;
711 const uint32_t *mark;
712 const char *helper;
713 uint16_t zone;
714 bool commit;
715 const struct nlattr *nat;
716
717 if (!nl_parse_nested(attr, ovs_conntrack_policy, a, ARRAY_SIZE(a))) {
718 ds_put_cstr(ds, "ct(error)");
719 return;
720 }
721
722 commit = a[OVS_CT_ATTR_COMMIT] ? true : false;
723 zone = a[OVS_CT_ATTR_ZONE] ? nl_attr_get_u16(a[OVS_CT_ATTR_ZONE]) : 0;
724 mark = a[OVS_CT_ATTR_MARK] ? nl_attr_get(a[OVS_CT_ATTR_MARK]) : NULL;
725 label = a[OVS_CT_ATTR_LABELS] ? nl_attr_get(a[OVS_CT_ATTR_LABELS]): NULL;
726 helper = a[OVS_CT_ATTR_HELPER] ? nl_attr_get(a[OVS_CT_ATTR_HELPER]) : NULL;
727 nat = a[OVS_CT_ATTR_NAT];
728
729 ds_put_format(ds, "ct");
730 if (commit || zone || mark || label || helper || nat) {
731 ds_put_cstr(ds, "(");
732 if (commit) {
733 ds_put_format(ds, "commit,");
734 }
735 if (zone) {
736 ds_put_format(ds, "zone=%"PRIu16",", zone);
737 }
738 if (mark) {
739 ds_put_format(ds, "mark=%#"PRIx32"/%#"PRIx32",", *mark,
740 *(mark + 1));
741 }
742 if (label) {
743 ds_put_format(ds, "label=");
744 format_u128(ds, label, label + 1, true);
745 ds_put_char(ds, ',');
746 }
747 if (helper) {
748 ds_put_format(ds, "helper=%s,", helper);
749 }
750 if (nat) {
751 format_odp_ct_nat(ds, nat);
752 }
753 ds_chomp(ds, ',');
754 ds_put_cstr(ds, ")");
755 }
756 }
757
758 static void
759 format_odp_action(struct ds *ds, const struct nlattr *a)
760 {
761 int expected_len;
762 enum ovs_action_attr type = nl_attr_type(a);
763 size_t size;
764
765 expected_len = odp_action_len(nl_attr_type(a));
766 if (expected_len != ATTR_LEN_VARIABLE &&
767 nl_attr_get_size(a) != expected_len) {
768 ds_put_format(ds, "bad length %"PRIuSIZE", expected %d for: ",
769 nl_attr_get_size(a), expected_len);
770 format_generic_odp_action(ds, a);
771 return;
772 }
773
774 switch (type) {
775 case OVS_ACTION_ATTR_OUTPUT:
776 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
777 break;
778 case OVS_ACTION_ATTR_TUNNEL_POP:
779 ds_put_format(ds, "tnl_pop(%"PRIu32")", nl_attr_get_u32(a));
780 break;
781 case OVS_ACTION_ATTR_TUNNEL_PUSH:
782 format_odp_tnl_push_action(ds, a);
783 break;
784 case OVS_ACTION_ATTR_USERSPACE:
785 format_odp_userspace_action(ds, a);
786 break;
787 case OVS_ACTION_ATTR_RECIRC:
788 format_odp_recirc_action(ds, nl_attr_get_u32(a));
789 break;
790 case OVS_ACTION_ATTR_HASH:
791 format_odp_hash_action(ds, nl_attr_get(a));
792 break;
793 case OVS_ACTION_ATTR_SET_MASKED:
794 a = nl_attr_get(a);
795 size = nl_attr_get_size(a) / 2;
796 ds_put_cstr(ds, "set(");
797
798 /* Masked set action not supported for tunnel key, which is bigger. */
799 if (size <= sizeof(struct ovs_key_ipv6)) {
800 struct nlattr attr[1 + DIV_ROUND_UP(sizeof(struct ovs_key_ipv6),
801 sizeof(struct nlattr))];
802 struct nlattr mask[1 + DIV_ROUND_UP(sizeof(struct ovs_key_ipv6),
803 sizeof(struct nlattr))];
804
805 mask->nla_type = attr->nla_type = nl_attr_type(a);
806 mask->nla_len = attr->nla_len = NLA_HDRLEN + size;
807 memcpy(attr + 1, (char *)(a + 1), size);
808 memcpy(mask + 1, (char *)(a + 1) + size, size);
809 format_odp_key_attr(attr, mask, NULL, ds, false);
810 } else {
811 format_odp_key_attr(a, NULL, NULL, ds, false);
812 }
813 ds_put_cstr(ds, ")");
814 break;
815 case OVS_ACTION_ATTR_SET:
816 ds_put_cstr(ds, "set(");
817 format_odp_key_attr(nl_attr_get(a), NULL, NULL, ds, true);
818 ds_put_cstr(ds, ")");
819 break;
820 case OVS_ACTION_ATTR_PUSH_VLAN: {
821 const struct ovs_action_push_vlan *vlan = nl_attr_get(a);
822 ds_put_cstr(ds, "push_vlan(");
823 if (vlan->vlan_tpid != htons(ETH_TYPE_VLAN)) {
824 ds_put_format(ds, "tpid=0x%04"PRIx16",", ntohs(vlan->vlan_tpid));
825 }
826 format_vlan_tci(ds, vlan->vlan_tci, OVS_BE16_MAX, false);
827 ds_put_char(ds, ')');
828 break;
829 }
830 case OVS_ACTION_ATTR_POP_VLAN:
831 ds_put_cstr(ds, "pop_vlan");
832 break;
833 case OVS_ACTION_ATTR_PUSH_MPLS: {
834 const struct ovs_action_push_mpls *mpls = nl_attr_get(a);
835 ds_put_cstr(ds, "push_mpls(");
836 format_mpls_lse(ds, mpls->mpls_lse);
837 ds_put_format(ds, ",eth_type=0x%"PRIx16")", ntohs(mpls->mpls_ethertype));
838 break;
839 }
840 case OVS_ACTION_ATTR_POP_MPLS: {
841 ovs_be16 ethertype = nl_attr_get_be16(a);
842 ds_put_format(ds, "pop_mpls(eth_type=0x%"PRIx16")", ntohs(ethertype));
843 break;
844 }
845 case OVS_ACTION_ATTR_SAMPLE:
846 format_odp_sample_action(ds, a);
847 break;
848 case OVS_ACTION_ATTR_CT:
849 format_odp_conntrack_action(ds, a);
850 break;
851 case OVS_ACTION_ATTR_UNSPEC:
852 case __OVS_ACTION_ATTR_MAX:
853 default:
854 format_generic_odp_action(ds, a);
855 break;
856 }
857 }
858
859 void
860 format_odp_actions(struct ds *ds, const struct nlattr *actions,
861 size_t actions_len)
862 {
863 if (actions_len) {
864 const struct nlattr *a;
865 unsigned int left;
866
867 NL_ATTR_FOR_EACH (a, left, actions, actions_len) {
868 if (a != actions) {
869 ds_put_char(ds, ',');
870 }
871 format_odp_action(ds, a);
872 }
873 if (left) {
874 int i;
875
876 if (left == actions_len) {
877 ds_put_cstr(ds, "<empty>");
878 }
879 ds_put_format(ds, ",***%u leftover bytes*** (", left);
880 for (i = 0; i < left; i++) {
881 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
882 }
883 ds_put_char(ds, ')');
884 }
885 } else {
886 ds_put_cstr(ds, "drop");
887 }
888 }
889
890 /* Separate out parse_odp_userspace_action() function. */
891 static int
892 parse_odp_userspace_action(const char *s, struct ofpbuf *actions)
893 {
894 uint32_t pid;
895 union user_action_cookie cookie;
896 struct ofpbuf buf;
897 odp_port_t tunnel_out_port;
898 int n = -1;
899 void *user_data = NULL;
900 size_t user_data_size = 0;
901 bool include_actions = false;
902 int res;
903
904 if (!ovs_scan(s, "userspace(pid=%"SCNi32"%n", &pid, &n)) {
905 return -EINVAL;
906 }
907
908 ofpbuf_init(&buf, 16);
909
910 {
911 uint32_t output;
912 uint32_t probability;
913 uint32_t collector_set_id;
914 uint32_t obs_domain_id;
915 uint32_t obs_point_id;
916 int vid, pcp;
917 int n1 = -1;
918 if (ovs_scan(&s[n], ",sFlow(vid=%i,"
919 "pcp=%i,output=%"SCNi32")%n",
920 &vid, &pcp, &output, &n1)) {
921 uint16_t tci;
922
923 n += n1;
924 tci = vid | (pcp << VLAN_PCP_SHIFT);
925 if (tci) {
926 tci |= VLAN_CFI;
927 }
928
929 cookie.type = USER_ACTION_COOKIE_SFLOW;
930 cookie.sflow.vlan_tci = htons(tci);
931 cookie.sflow.output = output;
932 user_data = &cookie;
933 user_data_size = sizeof cookie.sflow;
934 } else if (ovs_scan(&s[n], ",slow_path(%n",
935 &n1)) {
936 n += n1;
937 cookie.type = USER_ACTION_COOKIE_SLOW_PATH;
938 cookie.slow_path.unused = 0;
939 cookie.slow_path.reason = 0;
940
941 res = parse_odp_flags(&s[n], slow_path_reason_to_string,
942 &cookie.slow_path.reason,
943 SLOW_PATH_REASON_MASK, NULL);
944 if (res < 0 || s[n + res] != ')') {
945 goto out;
946 }
947 n += res + 1;
948
949 user_data = &cookie;
950 user_data_size = sizeof cookie.slow_path;
951 } else if (ovs_scan(&s[n], ",flow_sample(probability=%"SCNi32","
952 "collector_set_id=%"SCNi32","
953 "obs_domain_id=%"SCNi32","
954 "obs_point_id=%"SCNi32")%n",
955 &probability, &collector_set_id,
956 &obs_domain_id, &obs_point_id, &n1)) {
957 n += n1;
958
959 cookie.type = USER_ACTION_COOKIE_FLOW_SAMPLE;
960 cookie.flow_sample.probability = probability;
961 cookie.flow_sample.collector_set_id = collector_set_id;
962 cookie.flow_sample.obs_domain_id = obs_domain_id;
963 cookie.flow_sample.obs_point_id = obs_point_id;
964 user_data = &cookie;
965 user_data_size = sizeof cookie.flow_sample;
966 } else if (ovs_scan(&s[n], ",ipfix(output_port=%"SCNi32")%n",
967 &output, &n1) ) {
968 n += n1;
969 cookie.type = USER_ACTION_COOKIE_IPFIX;
970 cookie.ipfix.output_odp_port = u32_to_odp(output);
971 user_data = &cookie;
972 user_data_size = sizeof cookie.ipfix;
973 } else if (ovs_scan(&s[n], ",userdata(%n",
974 &n1)) {
975 char *end;
976
977 n += n1;
978 end = ofpbuf_put_hex(&buf, &s[n], NULL);
979 if (end[0] != ')') {
980 res = -EINVAL;
981 goto out;
982 }
983 user_data = buf.data;
984 user_data_size = buf.size;
985 n = (end + 1) - s;
986 }
987 }
988
989 {
990 int n1 = -1;
991 if (ovs_scan(&s[n], ",actions%n", &n1)) {
992 n += n1;
993 include_actions = true;
994 }
995 }
996
997 {
998 int n1 = -1;
999 if (ovs_scan(&s[n], ",tunnel_out_port=%"SCNi32")%n",
1000 &tunnel_out_port, &n1)) {
1001 odp_put_userspace_action(pid, user_data, user_data_size,
1002 tunnel_out_port, include_actions, actions);
1003 res = n + n1;
1004 } else if (s[n] == ')') {
1005 odp_put_userspace_action(pid, user_data, user_data_size,
1006 ODPP_NONE, include_actions, actions);
1007 res = n + 1;
1008 } else {
1009 res = -EINVAL;
1010 }
1011 }
1012 out:
1013 ofpbuf_uninit(&buf);
1014 return res;
1015 }
1016
1017 static int
1018 ovs_parse_tnl_push(const char *s, struct ovs_action_push_tnl *data)
1019 {
1020 struct eth_header *eth;
1021 struct ip_header *ip;
1022 struct ovs_16aligned_ip6_hdr *ip6;
1023 struct udp_header *udp;
1024 struct gre_base_hdr *greh;
1025 uint16_t gre_proto, gre_flags, dl_type, udp_src, udp_dst, csum;
1026 ovs_be32 sip, dip;
1027 uint32_t tnl_type = 0, header_len = 0, ip_len = 0;
1028 void *l3, *l4;
1029 int n = 0;
1030
1031 if (!ovs_scan_len(s, &n, "tnl_push(tnl_port(%"SCNi32"),", &data->tnl_port)) {
1032 return -EINVAL;
1033 }
1034 eth = (struct eth_header *) data->header;
1035 l3 = (data->header + sizeof *eth);
1036 ip = (struct ip_header *) l3;
1037 ip6 = (struct ovs_16aligned_ip6_hdr *) l3;
1038 if (!ovs_scan_len(s, &n, "header(size=%"SCNi32",type=%"SCNi32","
1039 "eth(dst="ETH_ADDR_SCAN_FMT",",
1040 &data->header_len,
1041 &data->tnl_type,
1042 ETH_ADDR_SCAN_ARGS(eth->eth_dst))) {
1043 return -EINVAL;
1044 }
1045
1046 if (!ovs_scan_len(s, &n, "src="ETH_ADDR_SCAN_FMT",",
1047 ETH_ADDR_SCAN_ARGS(eth->eth_src))) {
1048 return -EINVAL;
1049 }
1050 if (!ovs_scan_len(s, &n, "dl_type=0x%"SCNx16"),", &dl_type)) {
1051 return -EINVAL;
1052 }
1053 eth->eth_type = htons(dl_type);
1054
1055 if (eth->eth_type == htons(ETH_TYPE_IP)) {
1056 /* IPv4 */
1057 uint16_t ip_frag_off;
1058 if (!ovs_scan_len(s, &n, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT",proto=%"SCNi8
1059 ",tos=%"SCNi8",ttl=%"SCNi8",frag=0x%"SCNx16"),",
1060 IP_SCAN_ARGS(&sip),
1061 IP_SCAN_ARGS(&dip),
1062 &ip->ip_proto, &ip->ip_tos,
1063 &ip->ip_ttl, &ip_frag_off)) {
1064 return -EINVAL;
1065 }
1066 put_16aligned_be32(&ip->ip_src, sip);
1067 put_16aligned_be32(&ip->ip_dst, dip);
1068 ip->ip_frag_off = htons(ip_frag_off);
1069 ip_len = sizeof *ip;
1070 } else {
1071 char sip6_s[IPV6_SCAN_LEN + 1];
1072 char dip6_s[IPV6_SCAN_LEN + 1];
1073 struct in6_addr sip6, dip6;
1074 uint8_t tclass;
1075 uint32_t label;
1076 if (!ovs_scan_len(s, &n, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT
1077 ",label=%i,proto=%"SCNi8",tclass=0x%"SCNx8
1078 ",hlimit=%"SCNi8"),",
1079 sip6_s, dip6_s, &label, &ip6->ip6_nxt,
1080 &tclass, &ip6->ip6_hlim)
1081 || (label & ~IPV6_LABEL_MASK) != 0
1082 || inet_pton(AF_INET6, sip6_s, &sip6) != 1
1083 || inet_pton(AF_INET6, dip6_s, &dip6) != 1) {
1084 return -EINVAL;
1085 }
1086 put_16aligned_be32(&ip6->ip6_flow, htonl(6 << 28) |
1087 htonl(tclass << 20) | htonl(label));
1088 memcpy(&ip6->ip6_src, &sip6, sizeof(ip6->ip6_src));
1089 memcpy(&ip6->ip6_dst, &dip6, sizeof(ip6->ip6_dst));
1090 ip_len = sizeof *ip6;
1091 }
1092
1093 /* Tunnel header */
1094 l4 = ((uint8_t *) l3 + ip_len);
1095 udp = (struct udp_header *) l4;
1096 greh = (struct gre_base_hdr *) l4;
1097 if (ovs_scan_len(s, &n, "udp(src=%"SCNi16",dst=%"SCNi16",csum=0x%"SCNx16"),",
1098 &udp_src, &udp_dst, &csum)) {
1099 uint32_t vx_flags, vni;
1100
1101 udp->udp_src = htons(udp_src);
1102 udp->udp_dst = htons(udp_dst);
1103 udp->udp_len = 0;
1104 udp->udp_csum = htons(csum);
1105
1106 if (ovs_scan_len(s, &n, "vxlan(flags=0x%"SCNx32",vni=0x%"SCNx32"))",
1107 &vx_flags, &vni)) {
1108 struct vxlanhdr *vxh = (struct vxlanhdr *) (udp + 1);
1109
1110 put_16aligned_be32(&vxh->vx_flags, htonl(vx_flags));
1111 put_16aligned_be32(&vxh->vx_vni, htonl(vni << 8));
1112 tnl_type = OVS_VPORT_TYPE_VXLAN;
1113 header_len = sizeof *eth + ip_len +
1114 sizeof *udp + sizeof *vxh;
1115 } else if (ovs_scan_len(s, &n, "geneve(")) {
1116 struct genevehdr *gnh = (struct genevehdr *) (udp + 1);
1117
1118 memset(gnh, 0, sizeof *gnh);
1119 header_len = sizeof *eth + ip_len +
1120 sizeof *udp + sizeof *gnh;
1121
1122 if (ovs_scan_len(s, &n, "oam,")) {
1123 gnh->oam = 1;
1124 }
1125 if (ovs_scan_len(s, &n, "crit,")) {
1126 gnh->critical = 1;
1127 }
1128 if (!ovs_scan_len(s, &n, "vni=%"SCNi32, &vni)) {
1129 return -EINVAL;
1130 }
1131 if (ovs_scan_len(s, &n, ",options(")) {
1132 struct geneve_scan options;
1133 int len;
1134
1135 memset(&options, 0, sizeof options);
1136 len = scan_geneve(s + n, &options, NULL);
1137 if (!len) {
1138 return -EINVAL;
1139 }
1140
1141 memcpy(gnh->options, options.d, options.len);
1142 gnh->opt_len = options.len / 4;
1143 header_len += options.len;
1144
1145 n += len;
1146 }
1147 if (!ovs_scan_len(s, &n, "))")) {
1148 return -EINVAL;
1149 }
1150
1151 gnh->proto_type = htons(ETH_TYPE_TEB);
1152 put_16aligned_be32(&gnh->vni, htonl(vni << 8));
1153 tnl_type = OVS_VPORT_TYPE_GENEVE;
1154 } else {
1155 return -EINVAL;
1156 }
1157 } else if (ovs_scan_len(s, &n, "gre((flags=0x%"SCNx16",proto=0x%"SCNx16")",
1158 &gre_flags, &gre_proto)){
1159
1160 tnl_type = OVS_VPORT_TYPE_GRE;
1161 greh->flags = htons(gre_flags);
1162 greh->protocol = htons(gre_proto);
1163 ovs_16aligned_be32 *options = (ovs_16aligned_be32 *) (greh + 1);
1164
1165 if (greh->flags & htons(GRE_CSUM)) {
1166 if (!ovs_scan_len(s, &n, ",csum=0x%"SCNx16, &csum)) {
1167 return -EINVAL;
1168 }
1169
1170 memset(options, 0, sizeof *options);
1171 *((ovs_be16 *)options) = htons(csum);
1172 options++;
1173 }
1174 if (greh->flags & htons(GRE_KEY)) {
1175 uint32_t key;
1176
1177 if (!ovs_scan_len(s, &n, ",key=0x%"SCNx32, &key)) {
1178 return -EINVAL;
1179 }
1180
1181 put_16aligned_be32(options, htonl(key));
1182 options++;
1183 }
1184 if (greh->flags & htons(GRE_SEQ)) {
1185 uint32_t seq;
1186
1187 if (!ovs_scan_len(s, &n, ",seq=0x%"SCNx32, &seq)) {
1188 return -EINVAL;
1189 }
1190 put_16aligned_be32(options, htonl(seq));
1191 options++;
1192 }
1193
1194 if (!ovs_scan_len(s, &n, "))")) {
1195 return -EINVAL;
1196 }
1197
1198 header_len = sizeof *eth + ip_len +
1199 ((uint8_t *) options - (uint8_t *) greh);
1200 } else {
1201 return -EINVAL;
1202 }
1203
1204 /* check tunnel meta data. */
1205 if (data->tnl_type != tnl_type) {
1206 return -EINVAL;
1207 }
1208 if (data->header_len != header_len) {
1209 return -EINVAL;
1210 }
1211
1212 /* Out port */
1213 if (!ovs_scan_len(s, &n, ",out_port(%"SCNi32"))", &data->out_port)) {
1214 return -EINVAL;
1215 }
1216
1217 return n;
1218 }
1219
1220 struct ct_nat_params {
1221 bool snat;
1222 bool dnat;
1223 size_t addr_len;
1224 union {
1225 ovs_be32 ip;
1226 struct in6_addr ip6;
1227 } addr_min;
1228 union {
1229 ovs_be32 ip;
1230 struct in6_addr ip6;
1231 } addr_max;
1232 uint16_t proto_min;
1233 uint16_t proto_max;
1234 bool persistent;
1235 bool proto_hash;
1236 bool proto_random;
1237 };
1238
1239 static int
1240 scan_ct_nat_range(const char *s, int *n, struct ct_nat_params *p)
1241 {
1242 if (ovs_scan_len(s, n, "=")) {
1243 char ipv6_s[IPV6_SCAN_LEN + 1];
1244 struct in6_addr ipv6;
1245
1246 if (ovs_scan_len(s, n, IP_SCAN_FMT, IP_SCAN_ARGS(&p->addr_min.ip))) {
1247 p->addr_len = sizeof p->addr_min.ip;
1248 if (ovs_scan_len(s, n, "-")) {
1249 if (!ovs_scan_len(s, n, IP_SCAN_FMT,
1250 IP_SCAN_ARGS(&p->addr_max.ip))) {
1251 return -EINVAL;
1252 }
1253 }
1254 } else if ((ovs_scan_len(s, n, IPV6_SCAN_FMT, ipv6_s)
1255 || ovs_scan_len(s, n, "["IPV6_SCAN_FMT"]", ipv6_s))
1256 && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
1257 p->addr_len = sizeof p->addr_min.ip6;
1258 p->addr_min.ip6 = ipv6;
1259 if (ovs_scan_len(s, n, "-")) {
1260 if ((ovs_scan_len(s, n, IPV6_SCAN_FMT, ipv6_s)
1261 || ovs_scan_len(s, n, "["IPV6_SCAN_FMT"]", ipv6_s))
1262 && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
1263 p->addr_max.ip6 = ipv6;
1264 } else {
1265 return -EINVAL;
1266 }
1267 }
1268 } else {
1269 return -EINVAL;
1270 }
1271 if (ovs_scan_len(s, n, ":%"SCNu16, &p->proto_min)) {
1272 if (ovs_scan_len(s, n, "-")) {
1273 if (!ovs_scan_len(s, n, "%"SCNu16, &p->proto_max)) {
1274 return -EINVAL;
1275 }
1276 }
1277 }
1278 }
1279 return 0;
1280 }
1281
1282 static int
1283 scan_ct_nat(const char *s, struct ct_nat_params *p)
1284 {
1285 int n = 0;
1286
1287 if (ovs_scan_len(s, &n, "nat")) {
1288 memset(p, 0, sizeof *p);
1289
1290 if (ovs_scan_len(s, &n, "(")) {
1291 char *end;
1292 int end_n;
1293
1294 end = strchr(s + n, ')');
1295 if (!end) {
1296 return -EINVAL;
1297 }
1298 end_n = end - s;
1299
1300 while (n < end_n) {
1301 n += strspn(s + n, delimiters);
1302 if (ovs_scan_len(s, &n, "src")) {
1303 int err = scan_ct_nat_range(s, &n, p);
1304 if (err) {
1305 return err;
1306 }
1307 p->snat = true;
1308 continue;
1309 }
1310 if (ovs_scan_len(s, &n, "dst")) {
1311 int err = scan_ct_nat_range(s, &n, p);
1312 if (err) {
1313 return err;
1314 }
1315 p->dnat = true;
1316 continue;
1317 }
1318 if (ovs_scan_len(s, &n, "persistent")) {
1319 p->persistent = true;
1320 continue;
1321 }
1322 if (ovs_scan_len(s, &n, "hash")) {
1323 p->proto_hash = true;
1324 continue;
1325 }
1326 if (ovs_scan_len(s, &n, "random")) {
1327 p->proto_random = true;
1328 continue;
1329 }
1330 return -EINVAL;
1331 }
1332
1333 if (p->snat && p->dnat) {
1334 return -EINVAL;
1335 }
1336 if ((p->addr_len != 0 &&
1337 memcmp(&p->addr_max, &in6addr_any, p->addr_len) &&
1338 memcmp(&p->addr_max, &p->addr_min, p->addr_len) < 0) ||
1339 (p->proto_max && p->proto_max < p->proto_min)) {
1340 return -EINVAL;
1341 }
1342 if (p->proto_hash && p->proto_random) {
1343 return -EINVAL;
1344 }
1345 n++;
1346 }
1347 }
1348 return n;
1349 }
1350
1351 static void
1352 nl_msg_put_ct_nat(struct ct_nat_params *p, struct ofpbuf *actions)
1353 {
1354 size_t start = nl_msg_start_nested(actions, OVS_CT_ATTR_NAT);
1355
1356 if (p->snat) {
1357 nl_msg_put_flag(actions, OVS_NAT_ATTR_SRC);
1358 } else if (p->dnat) {
1359 nl_msg_put_flag(actions, OVS_NAT_ATTR_DST);
1360 } else {
1361 goto out;
1362 }
1363 if (p->addr_len != 0) {
1364 nl_msg_put_unspec(actions, OVS_NAT_ATTR_IP_MIN, &p->addr_min,
1365 p->addr_len);
1366 if (memcmp(&p->addr_max, &p->addr_min, p->addr_len) > 0) {
1367 nl_msg_put_unspec(actions, OVS_NAT_ATTR_IP_MAX, &p->addr_max,
1368 p->addr_len);
1369 }
1370 if (p->proto_min) {
1371 nl_msg_put_u16(actions, OVS_NAT_ATTR_PROTO_MIN, p->proto_min);
1372 if (p->proto_max && p->proto_max > p->proto_min) {
1373 nl_msg_put_u16(actions, OVS_NAT_ATTR_PROTO_MAX, p->proto_max);
1374 }
1375 }
1376 if (p->persistent) {
1377 nl_msg_put_flag(actions, OVS_NAT_ATTR_PERSISTENT);
1378 }
1379 if (p->proto_hash) {
1380 nl_msg_put_flag(actions, OVS_NAT_ATTR_PROTO_HASH);
1381 }
1382 if (p->proto_random) {
1383 nl_msg_put_flag(actions, OVS_NAT_ATTR_PROTO_RANDOM);
1384 }
1385 }
1386 out:
1387 nl_msg_end_nested(actions, start);
1388 }
1389
1390 static int
1391 parse_conntrack_action(const char *s_, struct ofpbuf *actions)
1392 {
1393 const char *s = s_;
1394
1395 if (ovs_scan(s, "ct")) {
1396 const char *helper = NULL;
1397 size_t helper_len = 0;
1398 bool commit = false;
1399 uint16_t zone = 0;
1400 struct {
1401 uint32_t value;
1402 uint32_t mask;
1403 } ct_mark = { 0, 0 };
1404 struct {
1405 ovs_u128 value;
1406 ovs_u128 mask;
1407 } ct_label;
1408 struct ct_nat_params nat_params;
1409 bool have_nat = false;
1410 size_t start;
1411 char *end;
1412
1413 memset(&ct_label, 0, sizeof(ct_label));
1414
1415 s += 2;
1416 if (ovs_scan(s, "(")) {
1417 s++;
1418 find_end:
1419 end = strchr(s, ')');
1420 if (!end) {
1421 return -EINVAL;
1422 }
1423
1424 while (s != end) {
1425 int n;
1426
1427 s += strspn(s, delimiters);
1428 if (ovs_scan(s, "commit%n", &n)) {
1429 commit = true;
1430 s += n;
1431 continue;
1432 }
1433 if (ovs_scan(s, "zone=%"SCNu16"%n", &zone, &n)) {
1434 s += n;
1435 continue;
1436 }
1437 if (ovs_scan(s, "mark=%"SCNx32"%n", &ct_mark.value, &n)) {
1438 s += n;
1439 n = -1;
1440 if (ovs_scan(s, "/%"SCNx32"%n", &ct_mark.mask, &n)) {
1441 s += n;
1442 } else {
1443 ct_mark.mask = UINT32_MAX;
1444 }
1445 continue;
1446 }
1447 if (ovs_scan(s, "label=%n", &n)) {
1448 int retval;
1449
1450 s += n;
1451 retval = scan_u128(s, &ct_label.value, &ct_label.mask);
1452 if (retval < 0) {
1453 return retval;
1454 }
1455 s += retval;
1456 continue;
1457 }
1458 if (ovs_scan(s, "helper=%n", &n)) {
1459 s += n;
1460 helper_len = strcspn(s, delimiters_end);
1461 if (!helper_len || helper_len > 15) {
1462 return -EINVAL;
1463 }
1464 helper = s;
1465 s += helper_len;
1466 continue;
1467 }
1468
1469 n = scan_ct_nat(s, &nat_params);
1470 if (n > 0) {
1471 s += n;
1472 have_nat = true;
1473
1474 /* end points to the end of the nested, nat action.
1475 * find the real end. */
1476 goto find_end;
1477 }
1478 /* Nothing matched. */
1479 return -EINVAL;
1480 }
1481 s++;
1482 }
1483
1484 start = nl_msg_start_nested(actions, OVS_ACTION_ATTR_CT);
1485 if (commit) {
1486 nl_msg_put_flag(actions, OVS_CT_ATTR_COMMIT);
1487 }
1488 if (zone) {
1489 nl_msg_put_u16(actions, OVS_CT_ATTR_ZONE, zone);
1490 }
1491 if (ct_mark.mask) {
1492 nl_msg_put_unspec(actions, OVS_CT_ATTR_MARK, &ct_mark,
1493 sizeof(ct_mark));
1494 }
1495 if (!ovs_u128_is_zero(&ct_label.mask)) {
1496 nl_msg_put_unspec(actions, OVS_CT_ATTR_LABELS, &ct_label,
1497 sizeof ct_label);
1498 }
1499 if (helper) {
1500 nl_msg_put_string__(actions, OVS_CT_ATTR_HELPER, helper,
1501 helper_len);
1502 }
1503 if (have_nat) {
1504 nl_msg_put_ct_nat(&nat_params, actions);
1505 }
1506 nl_msg_end_nested(actions, start);
1507 }
1508
1509 return s - s_;
1510 }
1511
1512 static int
1513 parse_odp_action(const char *s, const struct simap *port_names,
1514 struct ofpbuf *actions)
1515 {
1516 {
1517 uint32_t port;
1518 int n;
1519
1520 if (ovs_scan(s, "%"SCNi32"%n", &port, &n)) {
1521 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, port);
1522 return n;
1523 }
1524 }
1525
1526 if (port_names) {
1527 int len = strcspn(s, delimiters);
1528 struct simap_node *node;
1529
1530 node = simap_find_len(port_names, s, len);
1531 if (node) {
1532 nl_msg_put_u32(actions, OVS_ACTION_ATTR_OUTPUT, node->data);
1533 return len;
1534 }
1535 }
1536
1537 {
1538 uint32_t recirc_id;
1539 int n = -1;
1540
1541 if (ovs_scan(s, "recirc(%"PRIu32")%n", &recirc_id, &n)) {
1542 nl_msg_put_u32(actions, OVS_ACTION_ATTR_RECIRC, recirc_id);
1543 return n;
1544 }
1545 }
1546
1547 if (!strncmp(s, "userspace(", 10)) {
1548 return parse_odp_userspace_action(s, actions);
1549 }
1550
1551 if (!strncmp(s, "set(", 4)) {
1552 size_t start_ofs;
1553 int retval;
1554 struct nlattr mask[128 / sizeof(struct nlattr)];
1555 struct ofpbuf maskbuf;
1556 struct nlattr *nested, *key;
1557 size_t size;
1558
1559 /* 'mask' is big enough to hold any key. */
1560 ofpbuf_use_stack(&maskbuf, mask, sizeof mask);
1561
1562 start_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SET);
1563 retval = parse_odp_key_mask_attr(s + 4, port_names, actions, &maskbuf);
1564 if (retval < 0) {
1565 return retval;
1566 }
1567 if (s[retval + 4] != ')') {
1568 return -EINVAL;
1569 }
1570
1571 nested = ofpbuf_at_assert(actions, start_ofs, sizeof *nested);
1572 key = nested + 1;
1573
1574 size = nl_attr_get_size(mask);
1575 if (size == nl_attr_get_size(key)) {
1576 /* Change to masked set action if not fully masked. */
1577 if (!is_all_ones(mask + 1, size)) {
1578 key->nla_len += size;
1579 ofpbuf_put(actions, mask + 1, size);
1580 /* 'actions' may have been reallocated by ofpbuf_put(). */
1581 nested = ofpbuf_at_assert(actions, start_ofs, sizeof *nested);
1582 nested->nla_type = OVS_ACTION_ATTR_SET_MASKED;
1583 }
1584 }
1585
1586 nl_msg_end_nested(actions, start_ofs);
1587 return retval + 5;
1588 }
1589
1590 {
1591 struct ovs_action_push_vlan push;
1592 int tpid = ETH_TYPE_VLAN;
1593 int vid, pcp;
1594 int cfi = 1;
1595 int n = -1;
1596
1597 if (ovs_scan(s, "push_vlan(vid=%i,pcp=%i)%n", &vid, &pcp, &n)
1598 || ovs_scan(s, "push_vlan(vid=%i,pcp=%i,cfi=%i)%n",
1599 &vid, &pcp, &cfi, &n)
1600 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i)%n",
1601 &tpid, &vid, &pcp, &n)
1602 || ovs_scan(s, "push_vlan(tpid=%i,vid=%i,pcp=%i,cfi=%i)%n",
1603 &tpid, &vid, &pcp, &cfi, &n)) {
1604 push.vlan_tpid = htons(tpid);
1605 push.vlan_tci = htons((vid << VLAN_VID_SHIFT)
1606 | (pcp << VLAN_PCP_SHIFT)
1607 | (cfi ? VLAN_CFI : 0));
1608 nl_msg_put_unspec(actions, OVS_ACTION_ATTR_PUSH_VLAN,
1609 &push, sizeof push);
1610
1611 return n;
1612 }
1613 }
1614
1615 if (!strncmp(s, "pop_vlan", 8)) {
1616 nl_msg_put_flag(actions, OVS_ACTION_ATTR_POP_VLAN);
1617 return 8;
1618 }
1619
1620 {
1621 double percentage;
1622 int n = -1;
1623
1624 if (ovs_scan(s, "sample(sample=%lf%%,actions(%n", &percentage, &n)
1625 && percentage >= 0. && percentage <= 100.0) {
1626 size_t sample_ofs, actions_ofs;
1627 double probability;
1628
1629 probability = floor(UINT32_MAX * (percentage / 100.0) + .5);
1630 sample_ofs = nl_msg_start_nested(actions, OVS_ACTION_ATTR_SAMPLE);
1631 nl_msg_put_u32(actions, OVS_SAMPLE_ATTR_PROBABILITY,
1632 (probability <= 0 ? 0
1633 : probability >= UINT32_MAX ? UINT32_MAX
1634 : probability));
1635
1636 actions_ofs = nl_msg_start_nested(actions,
1637 OVS_SAMPLE_ATTR_ACTIONS);
1638 for (;;) {
1639 int retval;
1640
1641 n += strspn(s + n, delimiters);
1642 if (s[n] == ')') {
1643 break;
1644 }
1645
1646 retval = parse_odp_action(s + n, port_names, actions);
1647 if (retval < 0) {
1648 return retval;
1649 }
1650 n += retval;
1651 }
1652 nl_msg_end_nested(actions, actions_ofs);
1653 nl_msg_end_nested(actions, sample_ofs);
1654
1655 return s[n + 1] == ')' ? n + 2 : -EINVAL;
1656 }
1657 }
1658
1659 {
1660 uint32_t port;
1661 int n;
1662
1663 if (ovs_scan(s, "tnl_pop(%"SCNi32")%n", &port, &n)) {
1664 nl_msg_put_u32(actions, OVS_ACTION_ATTR_TUNNEL_POP, port);
1665 return n;
1666 }
1667 }
1668
1669 {
1670 int retval;
1671
1672 retval = parse_conntrack_action(s, actions);
1673 if (retval) {
1674 return retval;
1675 }
1676 }
1677
1678 {
1679 struct ovs_action_push_tnl data;
1680 int n;
1681
1682 n = ovs_parse_tnl_push(s, &data);
1683 if (n > 0) {
1684 odp_put_tnl_push_action(actions, &data);
1685 return n;
1686 } else if (n < 0) {
1687 return n;
1688 }
1689 }
1690 return -EINVAL;
1691 }
1692
1693 /* Parses the string representation of datapath actions, in the format output
1694 * by format_odp_action(). Returns 0 if successful, otherwise a positive errno
1695 * value. On success, the ODP actions are appended to 'actions' as a series of
1696 * Netlink attributes. On failure, no data is appended to 'actions'. Either
1697 * way, 'actions''s data might be reallocated. */
1698 int
1699 odp_actions_from_string(const char *s, const struct simap *port_names,
1700 struct ofpbuf *actions)
1701 {
1702 size_t old_size;
1703
1704 if (!strcasecmp(s, "drop")) {
1705 return 0;
1706 }
1707
1708 old_size = actions->size;
1709 for (;;) {
1710 int retval;
1711
1712 s += strspn(s, delimiters);
1713 if (!*s) {
1714 return 0;
1715 }
1716
1717 retval = parse_odp_action(s, port_names, actions);
1718 if (retval < 0 || !strchr(delimiters, s[retval])) {
1719 actions->size = old_size;
1720 return -retval;
1721 }
1722 s += retval;
1723 }
1724
1725 return 0;
1726 }
1727 \f
1728 static const struct attr_len_tbl ovs_vxlan_ext_attr_lens[OVS_VXLAN_EXT_MAX + 1] = {
1729 [OVS_VXLAN_EXT_GBP] = { .len = 4 },
1730 };
1731
1732 static const struct attr_len_tbl ovs_tun_key_attr_lens[OVS_TUNNEL_KEY_ATTR_MAX + 1] = {
1733 [OVS_TUNNEL_KEY_ATTR_ID] = { .len = 8 },
1734 [OVS_TUNNEL_KEY_ATTR_IPV4_SRC] = { .len = 4 },
1735 [OVS_TUNNEL_KEY_ATTR_IPV4_DST] = { .len = 4 },
1736 [OVS_TUNNEL_KEY_ATTR_TOS] = { .len = 1 },
1737 [OVS_TUNNEL_KEY_ATTR_TTL] = { .len = 1 },
1738 [OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = { .len = 0 },
1739 [OVS_TUNNEL_KEY_ATTR_CSUM] = { .len = 0 },
1740 [OVS_TUNNEL_KEY_ATTR_TP_SRC] = { .len = 2 },
1741 [OVS_TUNNEL_KEY_ATTR_TP_DST] = { .len = 2 },
1742 [OVS_TUNNEL_KEY_ATTR_OAM] = { .len = 0 },
1743 [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = { .len = ATTR_LEN_VARIABLE },
1744 [OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS] = { .len = ATTR_LEN_NESTED,
1745 .next = ovs_vxlan_ext_attr_lens ,
1746 .next_max = OVS_VXLAN_EXT_MAX},
1747 [OVS_TUNNEL_KEY_ATTR_IPV6_SRC] = { .len = 16 },
1748 [OVS_TUNNEL_KEY_ATTR_IPV6_DST] = { .len = 16 },
1749 };
1750
1751 static const struct attr_len_tbl ovs_flow_key_attr_lens[OVS_KEY_ATTR_MAX + 1] = {
1752 [OVS_KEY_ATTR_ENCAP] = { .len = ATTR_LEN_NESTED },
1753 [OVS_KEY_ATTR_PRIORITY] = { .len = 4 },
1754 [OVS_KEY_ATTR_SKB_MARK] = { .len = 4 },
1755 [OVS_KEY_ATTR_DP_HASH] = { .len = 4 },
1756 [OVS_KEY_ATTR_RECIRC_ID] = { .len = 4 },
1757 [OVS_KEY_ATTR_TUNNEL] = { .len = ATTR_LEN_NESTED,
1758 .next = ovs_tun_key_attr_lens,
1759 .next_max = OVS_TUNNEL_KEY_ATTR_MAX },
1760 [OVS_KEY_ATTR_IN_PORT] = { .len = 4 },
1761 [OVS_KEY_ATTR_ETHERNET] = { .len = sizeof(struct ovs_key_ethernet) },
1762 [OVS_KEY_ATTR_VLAN] = { .len = 2 },
1763 [OVS_KEY_ATTR_ETHERTYPE] = { .len = 2 },
1764 [OVS_KEY_ATTR_MPLS] = { .len = ATTR_LEN_VARIABLE },
1765 [OVS_KEY_ATTR_IPV4] = { .len = sizeof(struct ovs_key_ipv4) },
1766 [OVS_KEY_ATTR_IPV6] = { .len = sizeof(struct ovs_key_ipv6) },
1767 [OVS_KEY_ATTR_TCP] = { .len = sizeof(struct ovs_key_tcp) },
1768 [OVS_KEY_ATTR_TCP_FLAGS] = { .len = 2 },
1769 [OVS_KEY_ATTR_UDP] = { .len = sizeof(struct ovs_key_udp) },
1770 [OVS_KEY_ATTR_SCTP] = { .len = sizeof(struct ovs_key_sctp) },
1771 [OVS_KEY_ATTR_ICMP] = { .len = sizeof(struct ovs_key_icmp) },
1772 [OVS_KEY_ATTR_ICMPV6] = { .len = sizeof(struct ovs_key_icmpv6) },
1773 [OVS_KEY_ATTR_ARP] = { .len = sizeof(struct ovs_key_arp) },
1774 [OVS_KEY_ATTR_ND] = { .len = sizeof(struct ovs_key_nd) },
1775 [OVS_KEY_ATTR_CT_STATE] = { .len = 4 },
1776 [OVS_KEY_ATTR_CT_ZONE] = { .len = 2 },
1777 [OVS_KEY_ATTR_CT_MARK] = { .len = 4 },
1778 [OVS_KEY_ATTR_CT_LABELS] = { .len = sizeof(struct ovs_key_ct_labels) },
1779 };
1780
1781 /* Returns the correct length of the payload for a flow key attribute of the
1782 * specified 'type', ATTR_LEN_INVALID if 'type' is unknown, ATTR_LEN_VARIABLE
1783 * if the attribute's payload is variable length, or ATTR_LEN_NESTED if the
1784 * payload is a nested type. */
1785 static int
1786 odp_key_attr_len(const struct attr_len_tbl tbl[], int max_len, uint16_t type)
1787 {
1788 if (type > max_len) {
1789 return ATTR_LEN_INVALID;
1790 }
1791
1792 return tbl[type].len;
1793 }
1794
1795 static void
1796 format_generic_odp_key(const struct nlattr *a, struct ds *ds)
1797 {
1798 size_t len = nl_attr_get_size(a);
1799 if (len) {
1800 const uint8_t *unspec;
1801 unsigned int i;
1802
1803 unspec = nl_attr_get(a);
1804 for (i = 0; i < len; i++) {
1805 if (i) {
1806 ds_put_char(ds, ' ');
1807 }
1808 ds_put_format(ds, "%02x", unspec[i]);
1809 }
1810 }
1811 }
1812
1813 static const char *
1814 ovs_frag_type_to_string(enum ovs_frag_type type)
1815 {
1816 switch (type) {
1817 case OVS_FRAG_TYPE_NONE:
1818 return "no";
1819 case OVS_FRAG_TYPE_FIRST:
1820 return "first";
1821 case OVS_FRAG_TYPE_LATER:
1822 return "later";
1823 case __OVS_FRAG_TYPE_MAX:
1824 default:
1825 return "<error>";
1826 }
1827 }
1828
1829 static enum odp_key_fitness
1830 odp_tun_key_from_attr__(const struct nlattr *attr,
1831 const struct nlattr *flow_attrs, size_t flow_attr_len,
1832 const struct flow_tnl *src_tun, struct flow_tnl *tun,
1833 bool udpif)
1834 {
1835 unsigned int left;
1836 const struct nlattr *a;
1837 bool ttl = false;
1838 bool unknown = false;
1839
1840 NL_NESTED_FOR_EACH(a, left, attr) {
1841 uint16_t type = nl_attr_type(a);
1842 size_t len = nl_attr_get_size(a);
1843 int expected_len = odp_key_attr_len(ovs_tun_key_attr_lens,
1844 OVS_TUNNEL_ATTR_MAX, type);
1845
1846 if (len != expected_len && expected_len >= 0) {
1847 return ODP_FIT_ERROR;
1848 }
1849
1850 switch (type) {
1851 case OVS_TUNNEL_KEY_ATTR_ID:
1852 tun->tun_id = nl_attr_get_be64(a);
1853 tun->flags |= FLOW_TNL_F_KEY;
1854 break;
1855 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
1856 tun->ip_src = nl_attr_get_be32(a);
1857 break;
1858 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
1859 tun->ip_dst = nl_attr_get_be32(a);
1860 break;
1861 case OVS_TUNNEL_KEY_ATTR_IPV6_SRC:
1862 tun->ipv6_src = nl_attr_get_in6_addr(a);
1863 break;
1864 case OVS_TUNNEL_KEY_ATTR_IPV6_DST:
1865 tun->ipv6_dst = nl_attr_get_in6_addr(a);
1866 break;
1867 case OVS_TUNNEL_KEY_ATTR_TOS:
1868 tun->ip_tos = nl_attr_get_u8(a);
1869 break;
1870 case OVS_TUNNEL_KEY_ATTR_TTL:
1871 tun->ip_ttl = nl_attr_get_u8(a);
1872 ttl = true;
1873 break;
1874 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
1875 tun->flags |= FLOW_TNL_F_DONT_FRAGMENT;
1876 break;
1877 case OVS_TUNNEL_KEY_ATTR_CSUM:
1878 tun->flags |= FLOW_TNL_F_CSUM;
1879 break;
1880 case OVS_TUNNEL_KEY_ATTR_TP_SRC:
1881 tun->tp_src = nl_attr_get_be16(a);
1882 break;
1883 case OVS_TUNNEL_KEY_ATTR_TP_DST:
1884 tun->tp_dst = nl_attr_get_be16(a);
1885 break;
1886 case OVS_TUNNEL_KEY_ATTR_OAM:
1887 tun->flags |= FLOW_TNL_F_OAM;
1888 break;
1889 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: {
1890 static const struct nl_policy vxlan_opts_policy[] = {
1891 [OVS_VXLAN_EXT_GBP] = { .type = NL_A_U32 },
1892 };
1893 struct nlattr *ext[ARRAY_SIZE(vxlan_opts_policy)];
1894
1895 if (!nl_parse_nested(a, vxlan_opts_policy, ext, ARRAY_SIZE(ext))) {
1896 return ODP_FIT_ERROR;
1897 }
1898
1899 if (ext[OVS_VXLAN_EXT_GBP]) {
1900 uint32_t gbp = nl_attr_get_u32(ext[OVS_VXLAN_EXT_GBP]);
1901
1902 tun->gbp_id = htons(gbp & 0xFFFF);
1903 tun->gbp_flags = (gbp >> 16) & 0xFF;
1904 }
1905
1906 break;
1907 }
1908 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS:
1909 if (tun_metadata_from_geneve_nlattr(a, flow_attrs, flow_attr_len,
1910 src_tun, udpif, tun)) {
1911 return ODP_FIT_ERROR;
1912 }
1913 break;
1914
1915 default:
1916 /* Allow this to show up as unexpected, if there are unknown
1917 * tunnel attribute, eventually resulting in ODP_FIT_TOO_MUCH. */
1918 unknown = true;
1919 break;
1920 }
1921 }
1922
1923 if (!ttl) {
1924 return ODP_FIT_ERROR;
1925 }
1926 if (unknown) {
1927 return ODP_FIT_TOO_MUCH;
1928 }
1929 return ODP_FIT_PERFECT;
1930 }
1931
1932 enum odp_key_fitness
1933 odp_tun_key_from_attr(const struct nlattr *attr, bool udpif,
1934 struct flow_tnl *tun)
1935 {
1936 memset(tun, 0, sizeof *tun);
1937 return odp_tun_key_from_attr__(attr, NULL, 0, NULL, tun, udpif);
1938 }
1939
1940 static void
1941 tun_key_to_attr(struct ofpbuf *a, const struct flow_tnl *tun_key,
1942 const struct flow_tnl *tun_flow_key,
1943 const struct ofpbuf *key_buf)
1944 {
1945 size_t tun_key_ofs;
1946
1947 tun_key_ofs = nl_msg_start_nested(a, OVS_KEY_ATTR_TUNNEL);
1948
1949 /* tun_id != 0 without FLOW_TNL_F_KEY is valid if tun_key is a mask. */
1950 if (tun_key->tun_id || tun_key->flags & FLOW_TNL_F_KEY) {
1951 nl_msg_put_be64(a, OVS_TUNNEL_KEY_ATTR_ID, tun_key->tun_id);
1952 }
1953 if (tun_key->ip_src) {
1954 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, tun_key->ip_src);
1955 }
1956 if (tun_key->ip_dst) {
1957 nl_msg_put_be32(a, OVS_TUNNEL_KEY_ATTR_IPV4_DST, tun_key->ip_dst);
1958 }
1959 if (ipv6_addr_is_set(&tun_key->ipv6_src)) {
1960 nl_msg_put_in6_addr(a, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, &tun_key->ipv6_src);
1961 }
1962 if (ipv6_addr_is_set(&tun_key->ipv6_dst)) {
1963 nl_msg_put_in6_addr(a, OVS_TUNNEL_KEY_ATTR_IPV6_DST, &tun_key->ipv6_dst);
1964 }
1965 if (tun_key->ip_tos) {
1966 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TOS, tun_key->ip_tos);
1967 }
1968 nl_msg_put_u8(a, OVS_TUNNEL_KEY_ATTR_TTL, tun_key->ip_ttl);
1969 if (tun_key->flags & FLOW_TNL_F_DONT_FRAGMENT) {
1970 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
1971 }
1972 if (tun_key->flags & FLOW_TNL_F_CSUM) {
1973 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
1974 }
1975 if (tun_key->tp_src) {
1976 nl_msg_put_be16(a, OVS_TUNNEL_KEY_ATTR_TP_SRC, tun_key->tp_src);
1977 }
1978 if (tun_key->tp_dst) {
1979 nl_msg_put_be16(a, OVS_TUNNEL_KEY_ATTR_TP_DST, tun_key->tp_dst);
1980 }
1981 if (tun_key->flags & FLOW_TNL_F_OAM) {
1982 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_OAM);
1983 }
1984 if (tun_key->gbp_flags || tun_key->gbp_id) {
1985 size_t vxlan_opts_ofs;
1986
1987 vxlan_opts_ofs = nl_msg_start_nested(a, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS);
1988 nl_msg_put_u32(a, OVS_VXLAN_EXT_GBP,
1989 (tun_key->gbp_flags << 16) | ntohs(tun_key->gbp_id));
1990 nl_msg_end_nested(a, vxlan_opts_ofs);
1991 }
1992 tun_metadata_to_geneve_nlattr(tun_key, tun_flow_key, key_buf, a);
1993
1994 nl_msg_end_nested(a, tun_key_ofs);
1995 }
1996
1997 static bool
1998 odp_mask_attr_is_wildcard(const struct nlattr *ma)
1999 {
2000 return is_all_zeros(nl_attr_get(ma), nl_attr_get_size(ma));
2001 }
2002
2003 static bool
2004 odp_mask_is_exact(enum ovs_key_attr attr, const void *mask, size_t size)
2005 {
2006 if (attr == OVS_KEY_ATTR_TCP_FLAGS) {
2007 return TCP_FLAGS(*(ovs_be16 *)mask) == TCP_FLAGS(OVS_BE16_MAX);
2008 }
2009 if (attr == OVS_KEY_ATTR_IPV6) {
2010 const struct ovs_key_ipv6 *ipv6_mask = mask;
2011
2012 return
2013 ((ipv6_mask->ipv6_label & htonl(IPV6_LABEL_MASK))
2014 == htonl(IPV6_LABEL_MASK))
2015 && ipv6_mask->ipv6_proto == UINT8_MAX
2016 && ipv6_mask->ipv6_tclass == UINT8_MAX
2017 && ipv6_mask->ipv6_hlimit == UINT8_MAX
2018 && ipv6_mask->ipv6_frag == UINT8_MAX
2019 && ipv6_mask_is_exact((const struct in6_addr *)ipv6_mask->ipv6_src)
2020 && ipv6_mask_is_exact((const struct in6_addr *)ipv6_mask->ipv6_dst);
2021 }
2022 if (attr == OVS_KEY_ATTR_TUNNEL) {
2023 return false;
2024 }
2025
2026 if (attr == OVS_KEY_ATTR_ARP) {
2027 /* ARP key has padding, ignore it. */
2028 BUILD_ASSERT_DECL(sizeof(struct ovs_key_arp) == 24);
2029 BUILD_ASSERT_DECL(offsetof(struct ovs_key_arp, arp_tha) == 10 + 6);
2030 size = offsetof(struct ovs_key_arp, arp_tha) + ETH_ADDR_LEN;
2031 ovs_assert(((uint16_t *)mask)[size/2] == 0);
2032 }
2033
2034 return is_all_ones(mask, size);
2035 }
2036
2037 static bool
2038 odp_mask_attr_is_exact(const struct nlattr *ma)
2039 {
2040 enum ovs_key_attr attr = nl_attr_type(ma);
2041 const void *mask;
2042 size_t size;
2043
2044 if (attr == OVS_KEY_ATTR_TUNNEL) {
2045 return false;
2046 } else {
2047 mask = nl_attr_get(ma);
2048 size = nl_attr_get_size(ma);
2049 }
2050
2051 return odp_mask_is_exact(attr, mask, size);
2052 }
2053
2054 void
2055 odp_portno_names_set(struct hmap *portno_names, odp_port_t port_no,
2056 char *port_name)
2057 {
2058 struct odp_portno_names *odp_portno_names;
2059
2060 odp_portno_names = xmalloc(sizeof *odp_portno_names);
2061 odp_portno_names->port_no = port_no;
2062 odp_portno_names->name = xstrdup(port_name);
2063 hmap_insert(portno_names, &odp_portno_names->hmap_node,
2064 hash_odp_port(port_no));
2065 }
2066
2067 static char *
2068 odp_portno_names_get(const struct hmap *portno_names, odp_port_t port_no)
2069 {
2070 struct odp_portno_names *odp_portno_names;
2071
2072 HMAP_FOR_EACH_IN_BUCKET (odp_portno_names, hmap_node,
2073 hash_odp_port(port_no), portno_names) {
2074 if (odp_portno_names->port_no == port_no) {
2075 return odp_portno_names->name;
2076 }
2077 }
2078 return NULL;
2079 }
2080
2081 void
2082 odp_portno_names_destroy(struct hmap *portno_names)
2083 {
2084 struct odp_portno_names *odp_portno_names, *odp_portno_names_next;
2085 HMAP_FOR_EACH_SAFE (odp_portno_names, odp_portno_names_next,
2086 hmap_node, portno_names) {
2087 hmap_remove(portno_names, &odp_portno_names->hmap_node);
2088 free(odp_portno_names->name);
2089 free(odp_portno_names);
2090 }
2091 }
2092
2093 /* Format helpers. */
2094
2095 static void
2096 format_eth(struct ds *ds, const char *name, const struct eth_addr key,
2097 const struct eth_addr *mask, bool verbose)
2098 {
2099 bool mask_empty = mask && eth_addr_is_zero(*mask);
2100
2101 if (verbose || !mask_empty) {
2102 bool mask_full = !mask || eth_mask_is_exact(*mask);
2103
2104 if (mask_full) {
2105 ds_put_format(ds, "%s="ETH_ADDR_FMT",", name, ETH_ADDR_ARGS(key));
2106 } else {
2107 ds_put_format(ds, "%s=", name);
2108 eth_format_masked(key, mask, ds);
2109 ds_put_char(ds, ',');
2110 }
2111 }
2112 }
2113
2114 static void
2115 format_be64(struct ds *ds, const char *name, ovs_be64 key,
2116 const ovs_be64 *mask, bool verbose)
2117 {
2118 bool mask_empty = mask && !*mask;
2119
2120 if (verbose || !mask_empty) {
2121 bool mask_full = !mask || *mask == OVS_BE64_MAX;
2122
2123 ds_put_format(ds, "%s=0x%"PRIx64, name, ntohll(key));
2124 if (!mask_full) { /* Partially masked. */
2125 ds_put_format(ds, "/%#"PRIx64, ntohll(*mask));
2126 }
2127 ds_put_char(ds, ',');
2128 }
2129 }
2130
2131 static void
2132 format_ipv4(struct ds *ds, const char *name, ovs_be32 key,
2133 const ovs_be32 *mask, bool verbose)
2134 {
2135 bool mask_empty = mask && !*mask;
2136
2137 if (verbose || !mask_empty) {
2138 bool mask_full = !mask || *mask == OVS_BE32_MAX;
2139
2140 ds_put_format(ds, "%s="IP_FMT, name, IP_ARGS(key));
2141 if (!mask_full) { /* Partially masked. */
2142 ds_put_format(ds, "/"IP_FMT, IP_ARGS(*mask));
2143 }
2144 ds_put_char(ds, ',');
2145 }
2146 }
2147
2148 static void
2149 format_in6_addr(struct ds *ds, const char *name,
2150 const struct in6_addr *key,
2151 const struct in6_addr *mask,
2152 bool verbose)
2153 {
2154 char buf[INET6_ADDRSTRLEN];
2155 bool mask_empty = mask && ipv6_mask_is_any(mask);
2156
2157 if (verbose || !mask_empty) {
2158 bool mask_full = !mask || ipv6_mask_is_exact(mask);
2159
2160 inet_ntop(AF_INET6, key, buf, sizeof buf);
2161 ds_put_format(ds, "%s=%s", name, buf);
2162 if (!mask_full) { /* Partially masked. */
2163 inet_ntop(AF_INET6, mask, buf, sizeof buf);
2164 ds_put_format(ds, "/%s", buf);
2165 }
2166 ds_put_char(ds, ',');
2167 }
2168 }
2169
2170 static void
2171 format_ipv6(struct ds *ds, const char *name, const ovs_be32 key_[4],
2172 const ovs_be32 (*mask_)[4], bool verbose)
2173 {
2174 format_in6_addr(ds, name,
2175 (const struct in6_addr *)key_,
2176 mask_ ? (const struct in6_addr *)*mask_ : NULL,
2177 verbose);
2178 }
2179
2180 static void
2181 format_ipv6_label(struct ds *ds, const char *name, ovs_be32 key,
2182 const ovs_be32 *mask, bool verbose)
2183 {
2184 bool mask_empty = mask && !*mask;
2185
2186 if (verbose || !mask_empty) {
2187 bool mask_full = !mask
2188 || (*mask & htonl(IPV6_LABEL_MASK)) == htonl(IPV6_LABEL_MASK);
2189
2190 ds_put_format(ds, "%s=%#"PRIx32, name, ntohl(key));
2191 if (!mask_full) { /* Partially masked. */
2192 ds_put_format(ds, "/%#"PRIx32, ntohl(*mask));
2193 }
2194 ds_put_char(ds, ',');
2195 }
2196 }
2197
2198 static void
2199 format_u8x(struct ds *ds, const char *name, uint8_t key,
2200 const uint8_t *mask, bool verbose)
2201 {
2202 bool mask_empty = mask && !*mask;
2203
2204 if (verbose || !mask_empty) {
2205 bool mask_full = !mask || *mask == UINT8_MAX;
2206
2207 ds_put_format(ds, "%s=%#"PRIx8, name, key);
2208 if (!mask_full) { /* Partially masked. */
2209 ds_put_format(ds, "/%#"PRIx8, *mask);
2210 }
2211 ds_put_char(ds, ',');
2212 }
2213 }
2214
2215 static void
2216 format_u8u(struct ds *ds, const char *name, uint8_t key,
2217 const uint8_t *mask, bool verbose)
2218 {
2219 bool mask_empty = mask && !*mask;
2220
2221 if (verbose || !mask_empty) {
2222 bool mask_full = !mask || *mask == UINT8_MAX;
2223
2224 ds_put_format(ds, "%s=%"PRIu8, name, key);
2225 if (!mask_full) { /* Partially masked. */
2226 ds_put_format(ds, "/%#"PRIx8, *mask);
2227 }
2228 ds_put_char(ds, ',');
2229 }
2230 }
2231
2232 static void
2233 format_be16(struct ds *ds, const char *name, ovs_be16 key,
2234 const ovs_be16 *mask, bool verbose)
2235 {
2236 bool mask_empty = mask && !*mask;
2237
2238 if (verbose || !mask_empty) {
2239 bool mask_full = !mask || *mask == OVS_BE16_MAX;
2240
2241 ds_put_format(ds, "%s=%"PRIu16, name, ntohs(key));
2242 if (!mask_full) { /* Partially masked. */
2243 ds_put_format(ds, "/%#"PRIx16, ntohs(*mask));
2244 }
2245 ds_put_char(ds, ',');
2246 }
2247 }
2248
2249 static void
2250 format_be16x(struct ds *ds, const char *name, ovs_be16 key,
2251 const ovs_be16 *mask, bool verbose)
2252 {
2253 bool mask_empty = mask && !*mask;
2254
2255 if (verbose || !mask_empty) {
2256 bool mask_full = !mask || *mask == OVS_BE16_MAX;
2257
2258 ds_put_format(ds, "%s=%#"PRIx16, name, ntohs(key));
2259 if (!mask_full) { /* Partially masked. */
2260 ds_put_format(ds, "/%#"PRIx16, ntohs(*mask));
2261 }
2262 ds_put_char(ds, ',');
2263 }
2264 }
2265
2266 static void
2267 format_tun_flags(struct ds *ds, const char *name, uint16_t key,
2268 const uint16_t *mask, bool verbose)
2269 {
2270 bool mask_empty = mask && !*mask;
2271
2272 if (verbose || !mask_empty) {
2273 ds_put_cstr(ds, name);
2274 ds_put_char(ds, '(');
2275 if (mask) {
2276 format_flags_masked(ds, NULL, flow_tun_flag_to_string, key,
2277 *mask & FLOW_TNL_F_MASK, FLOW_TNL_F_MASK);
2278 } else { /* Fully masked. */
2279 format_flags(ds, flow_tun_flag_to_string, key, '|');
2280 }
2281 ds_put_cstr(ds, "),");
2282 }
2283 }
2284
2285 static bool
2286 check_attr_len(struct ds *ds, const struct nlattr *a, const struct nlattr *ma,
2287 const struct attr_len_tbl tbl[], int max_len, bool need_key)
2288 {
2289 int expected_len;
2290
2291 expected_len = odp_key_attr_len(tbl, max_len, nl_attr_type(a));
2292 if (expected_len != ATTR_LEN_VARIABLE &&
2293 expected_len != ATTR_LEN_NESTED) {
2294
2295 bool bad_key_len = nl_attr_get_size(a) != expected_len;
2296 bool bad_mask_len = ma && nl_attr_get_size(ma) != expected_len;
2297
2298 if (bad_key_len || bad_mask_len) {
2299 if (need_key) {
2300 ds_put_format(ds, "key%u", nl_attr_type(a));
2301 }
2302 if (bad_key_len) {
2303 ds_put_format(ds, "(bad key length %"PRIuSIZE", expected %d)(",
2304 nl_attr_get_size(a), expected_len);
2305 }
2306 format_generic_odp_key(a, ds);
2307 if (ma) {
2308 ds_put_char(ds, '/');
2309 if (bad_mask_len) {
2310 ds_put_format(ds, "(bad mask length %"PRIuSIZE", expected %d)(",
2311 nl_attr_get_size(ma), expected_len);
2312 }
2313 format_generic_odp_key(ma, ds);
2314 }
2315 ds_put_char(ds, ')');
2316 return false;
2317 }
2318 }
2319
2320 return true;
2321 }
2322
2323 static void
2324 format_unknown_key(struct ds *ds, const struct nlattr *a,
2325 const struct nlattr *ma)
2326 {
2327 ds_put_format(ds, "key%u(", nl_attr_type(a));
2328 format_generic_odp_key(a, ds);
2329 if (ma && !odp_mask_attr_is_exact(ma)) {
2330 ds_put_char(ds, '/');
2331 format_generic_odp_key(ma, ds);
2332 }
2333 ds_put_cstr(ds, "),");
2334 }
2335
2336 static void
2337 format_odp_tun_vxlan_opt(const struct nlattr *attr,
2338 const struct nlattr *mask_attr, struct ds *ds,
2339 bool verbose)
2340 {
2341 unsigned int left;
2342 const struct nlattr *a;
2343 struct ofpbuf ofp;
2344
2345 ofpbuf_init(&ofp, 100);
2346 NL_NESTED_FOR_EACH(a, left, attr) {
2347 uint16_t type = nl_attr_type(a);
2348 const struct nlattr *ma = NULL;
2349
2350 if (mask_attr) {
2351 ma = nl_attr_find__(nl_attr_get(mask_attr),
2352 nl_attr_get_size(mask_attr), type);
2353 if (!ma) {
2354 ma = generate_all_wildcard_mask(ovs_vxlan_ext_attr_lens,
2355 OVS_VXLAN_EXT_MAX,
2356 &ofp, a);
2357 }
2358 }
2359
2360 if (!check_attr_len(ds, a, ma, ovs_vxlan_ext_attr_lens,
2361 OVS_VXLAN_EXT_MAX, true)) {
2362 continue;
2363 }
2364
2365 switch (type) {
2366 case OVS_VXLAN_EXT_GBP: {
2367 uint32_t key = nl_attr_get_u32(a);
2368 ovs_be16 id, id_mask;
2369 uint8_t flags, flags_mask;
2370
2371 id = htons(key & 0xFFFF);
2372 flags = (key >> 16) & 0xFF;
2373 if (ma) {
2374 uint32_t mask = nl_attr_get_u32(ma);
2375 id_mask = htons(mask & 0xFFFF);
2376 flags_mask = (mask >> 16) & 0xFF;
2377 }
2378
2379 ds_put_cstr(ds, "gbp(");
2380 format_be16(ds, "id", id, ma ? &id_mask : NULL, verbose);
2381 format_u8x(ds, "flags", flags, ma ? &flags_mask : NULL, verbose);
2382 ds_chomp(ds, ',');
2383 ds_put_cstr(ds, "),");
2384 break;
2385 }
2386
2387 default:
2388 format_unknown_key(ds, a, ma);
2389 }
2390 ofpbuf_clear(&ofp);
2391 }
2392
2393 ds_chomp(ds, ',');
2394 ofpbuf_uninit(&ofp);
2395 }
2396
2397 #define MASK(PTR, FIELD) PTR ? &PTR->FIELD : NULL
2398
2399 static void
2400 format_geneve_opts(const struct geneve_opt *opt,
2401 const struct geneve_opt *mask, int opts_len,
2402 struct ds *ds, bool verbose)
2403 {
2404 while (opts_len > 0) {
2405 unsigned int len;
2406 uint8_t data_len, data_len_mask;
2407
2408 if (opts_len < sizeof *opt) {
2409 ds_put_format(ds, "opt len %u less than minimum %"PRIuSIZE,
2410 opts_len, sizeof *opt);
2411 return;
2412 }
2413
2414 data_len = opt->length * 4;
2415 if (mask) {
2416 if (mask->length == 0x1f) {
2417 data_len_mask = UINT8_MAX;
2418 } else {
2419 data_len_mask = mask->length;
2420 }
2421 }
2422 len = sizeof *opt + data_len;
2423 if (len > opts_len) {
2424 ds_put_format(ds, "opt len %u greater than remaining %u",
2425 len, opts_len);
2426 return;
2427 }
2428
2429 ds_put_char(ds, '{');
2430 format_be16x(ds, "class", opt->opt_class, MASK(mask, opt_class),
2431 verbose);
2432 format_u8x(ds, "type", opt->type, MASK(mask, type), verbose);
2433 format_u8u(ds, "len", data_len, mask ? &data_len_mask : NULL, verbose);
2434 if (data_len &&
2435 (verbose || !mask || !is_all_zeros(mask + 1, data_len))) {
2436 ds_put_hex(ds, opt + 1, data_len);
2437 if (mask && !is_all_ones(mask + 1, data_len)) {
2438 ds_put_char(ds, '/');
2439 ds_put_hex(ds, mask + 1, data_len);
2440 }
2441 } else {
2442 ds_chomp(ds, ',');
2443 }
2444 ds_put_char(ds, '}');
2445
2446 opt += len / sizeof(*opt);
2447 if (mask) {
2448 mask += len / sizeof(*opt);
2449 }
2450 opts_len -= len;
2451 };
2452 }
2453
2454 static void
2455 format_odp_tun_geneve(const struct nlattr *attr,
2456 const struct nlattr *mask_attr, struct ds *ds,
2457 bool verbose)
2458 {
2459 int opts_len = nl_attr_get_size(attr);
2460 const struct geneve_opt *opt = nl_attr_get(attr);
2461 const struct geneve_opt *mask = mask_attr ?
2462 nl_attr_get(mask_attr) : NULL;
2463
2464 if (mask && nl_attr_get_size(attr) != nl_attr_get_size(mask_attr)) {
2465 ds_put_format(ds, "value len %"PRIuSIZE" different from mask len %"PRIuSIZE,
2466 nl_attr_get_size(attr), nl_attr_get_size(mask_attr));
2467 return;
2468 }
2469
2470 format_geneve_opts(opt, mask, opts_len, ds, verbose);
2471 }
2472
2473 static void
2474 format_odp_tun_attr(const struct nlattr *attr, const struct nlattr *mask_attr,
2475 struct ds *ds, bool verbose)
2476 {
2477 unsigned int left;
2478 const struct nlattr *a;
2479 uint16_t flags = 0;
2480 uint16_t mask_flags = 0;
2481 struct ofpbuf ofp;
2482
2483 ofpbuf_init(&ofp, 100);
2484 NL_NESTED_FOR_EACH(a, left, attr) {
2485 enum ovs_tunnel_key_attr type = nl_attr_type(a);
2486 const struct nlattr *ma = NULL;
2487
2488 if (mask_attr) {
2489 ma = nl_attr_find__(nl_attr_get(mask_attr),
2490 nl_attr_get_size(mask_attr), type);
2491 if (!ma) {
2492 ma = generate_all_wildcard_mask(ovs_tun_key_attr_lens,
2493 OVS_TUNNEL_KEY_ATTR_MAX,
2494 &ofp, a);
2495 }
2496 }
2497
2498 if (!check_attr_len(ds, a, ma, ovs_tun_key_attr_lens,
2499 OVS_TUNNEL_KEY_ATTR_MAX, true)) {
2500 continue;
2501 }
2502
2503 switch (type) {
2504 case OVS_TUNNEL_KEY_ATTR_ID:
2505 format_be64(ds, "tun_id", nl_attr_get_be64(a),
2506 ma ? nl_attr_get(ma) : NULL, verbose);
2507 flags |= FLOW_TNL_F_KEY;
2508 if (ma) {
2509 mask_flags |= FLOW_TNL_F_KEY;
2510 }
2511 break;
2512 case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
2513 format_ipv4(ds, "src", nl_attr_get_be32(a),
2514 ma ? nl_attr_get(ma) : NULL, verbose);
2515 break;
2516 case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
2517 format_ipv4(ds, "dst", nl_attr_get_be32(a),
2518 ma ? nl_attr_get(ma) : NULL, verbose);
2519 break;
2520 case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: {
2521 struct in6_addr ipv6_src;
2522 ipv6_src = nl_attr_get_in6_addr(a);
2523 format_in6_addr(ds, "ipv6_src", &ipv6_src,
2524 ma ? nl_attr_get(ma) : NULL, verbose);
2525 break;
2526 }
2527 case OVS_TUNNEL_KEY_ATTR_IPV6_DST: {
2528 struct in6_addr ipv6_dst;
2529 ipv6_dst = nl_attr_get_in6_addr(a);
2530 format_in6_addr(ds, "ipv6_dst", &ipv6_dst,
2531 ma ? nl_attr_get(ma) : NULL, verbose);
2532 break;
2533 }
2534 case OVS_TUNNEL_KEY_ATTR_TOS:
2535 format_u8x(ds, "tos", nl_attr_get_u8(a),
2536 ma ? nl_attr_get(ma) : NULL, verbose);
2537 break;
2538 case OVS_TUNNEL_KEY_ATTR_TTL:
2539 format_u8u(ds, "ttl", nl_attr_get_u8(a),
2540 ma ? nl_attr_get(ma) : NULL, verbose);
2541 break;
2542 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
2543 flags |= FLOW_TNL_F_DONT_FRAGMENT;
2544 break;
2545 case OVS_TUNNEL_KEY_ATTR_CSUM:
2546 flags |= FLOW_TNL_F_CSUM;
2547 break;
2548 case OVS_TUNNEL_KEY_ATTR_TP_SRC:
2549 format_be16(ds, "tp_src", nl_attr_get_be16(a),
2550 ma ? nl_attr_get(ma) : NULL, verbose);
2551 break;
2552 case OVS_TUNNEL_KEY_ATTR_TP_DST:
2553 format_be16(ds, "tp_dst", nl_attr_get_be16(a),
2554 ma ? nl_attr_get(ma) : NULL, verbose);
2555 break;
2556 case OVS_TUNNEL_KEY_ATTR_OAM:
2557 flags |= FLOW_TNL_F_OAM;
2558 break;
2559 case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS:
2560 ds_put_cstr(ds, "vxlan(");
2561 format_odp_tun_vxlan_opt(a, ma, ds, verbose);
2562 ds_put_cstr(ds, "),");
2563 break;
2564 case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS:
2565 ds_put_cstr(ds, "geneve(");
2566 format_odp_tun_geneve(a, ma, ds, verbose);
2567 ds_put_cstr(ds, "),");
2568 break;
2569 case __OVS_TUNNEL_KEY_ATTR_MAX:
2570 default:
2571 format_unknown_key(ds, a, ma);
2572 }
2573 ofpbuf_clear(&ofp);
2574 }
2575
2576 /* Flags can have a valid mask even if the attribute is not set, so
2577 * we need to collect these separately. */
2578 if (mask_attr) {
2579 NL_NESTED_FOR_EACH(a, left, mask_attr) {
2580 switch (nl_attr_type(a)) {
2581 case OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT:
2582 mask_flags |= FLOW_TNL_F_DONT_FRAGMENT;
2583 break;
2584 case OVS_TUNNEL_KEY_ATTR_CSUM:
2585 mask_flags |= FLOW_TNL_F_CSUM;
2586 break;
2587 case OVS_TUNNEL_KEY_ATTR_OAM:
2588 mask_flags |= FLOW_TNL_F_OAM;
2589 break;
2590 }
2591 }
2592 }
2593
2594 format_tun_flags(ds, "flags", flags, mask_attr ? &mask_flags : NULL,
2595 verbose);
2596 ds_chomp(ds, ',');
2597 ofpbuf_uninit(&ofp);
2598 }
2599
2600 static const char *
2601 odp_ct_state_to_string(uint32_t flag)
2602 {
2603 switch (flag) {
2604 case OVS_CS_F_REPLY_DIR:
2605 return "rpl";
2606 case OVS_CS_F_TRACKED:
2607 return "trk";
2608 case OVS_CS_F_NEW:
2609 return "new";
2610 case OVS_CS_F_ESTABLISHED:
2611 return "est";
2612 case OVS_CS_F_RELATED:
2613 return "rel";
2614 case OVS_CS_F_INVALID:
2615 return "inv";
2616 case OVS_CS_F_SRC_NAT:
2617 return "snat";
2618 case OVS_CS_F_DST_NAT:
2619 return "dnat";
2620 default:
2621 return NULL;
2622 }
2623 }
2624
2625 static void
2626 format_frag(struct ds *ds, const char *name, uint8_t key,
2627 const uint8_t *mask, bool verbose)
2628 {
2629 bool mask_empty = mask && !*mask;
2630
2631 /* ODP frag is an enumeration field; partial masks are not meaningful. */
2632 if (verbose || !mask_empty) {
2633 bool mask_full = !mask || *mask == UINT8_MAX;
2634
2635 if (!mask_full) { /* Partially masked. */
2636 ds_put_format(ds, "error: partial mask not supported for frag (%#"
2637 PRIx8"),", *mask);
2638 } else {
2639 ds_put_format(ds, "%s=%s,", name, ovs_frag_type_to_string(key));
2640 }
2641 }
2642 }
2643
2644 static bool
2645 mask_empty(const struct nlattr *ma)
2646 {
2647 const void *mask;
2648 size_t n;
2649
2650 if (!ma) {
2651 return true;
2652 }
2653 mask = nl_attr_get(ma);
2654 n = nl_attr_get_size(ma);
2655
2656 return is_all_zeros(mask, n);
2657 }
2658
2659 static void
2660 format_odp_key_attr(const struct nlattr *a, const struct nlattr *ma,
2661 const struct hmap *portno_names, struct ds *ds,
2662 bool verbose)
2663 {
2664 enum ovs_key_attr attr = nl_attr_type(a);
2665 char namebuf[OVS_KEY_ATTR_BUFSIZE];
2666 bool is_exact;
2667
2668 is_exact = ma ? odp_mask_attr_is_exact(ma) : true;
2669
2670 ds_put_cstr(ds, ovs_key_attr_to_string(attr, namebuf, sizeof namebuf));
2671
2672 if (!check_attr_len(ds, a, ma, ovs_flow_key_attr_lens,
2673 OVS_KEY_ATTR_MAX, false)) {
2674 return;
2675 }
2676
2677 ds_put_char(ds, '(');
2678 switch (attr) {
2679 case OVS_KEY_ATTR_ENCAP:
2680 if (ma && nl_attr_get_size(ma) && nl_attr_get_size(a)) {
2681 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a),
2682 nl_attr_get(ma), nl_attr_get_size(ma), NULL, ds,
2683 verbose);
2684 } else if (nl_attr_get_size(a)) {
2685 odp_flow_format(nl_attr_get(a), nl_attr_get_size(a), NULL, 0, NULL,
2686 ds, verbose);
2687 }
2688 break;
2689
2690 case OVS_KEY_ATTR_PRIORITY:
2691 case OVS_KEY_ATTR_SKB_MARK:
2692 case OVS_KEY_ATTR_DP_HASH:
2693 case OVS_KEY_ATTR_RECIRC_ID:
2694 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
2695 if (!is_exact) {
2696 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
2697 }
2698 break;
2699
2700 case OVS_KEY_ATTR_CT_MARK:
2701 if (verbose || !mask_empty(ma)) {
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 }
2707 break;
2708
2709 case OVS_KEY_ATTR_CT_STATE:
2710 if (verbose) {
2711 ds_put_format(ds, "%#"PRIx32, nl_attr_get_u32(a));
2712 if (!is_exact) {
2713 ds_put_format(ds, "/%#"PRIx32,
2714 mask_empty(ma) ? 0 : nl_attr_get_u32(ma));
2715 }
2716 } else if (!is_exact) {
2717 format_flags_masked(ds, NULL, odp_ct_state_to_string,
2718 nl_attr_get_u32(a),
2719 mask_empty(ma) ? 0 : nl_attr_get_u32(ma),
2720 UINT32_MAX);
2721 } else {
2722 format_flags(ds, odp_ct_state_to_string, nl_attr_get_u32(a), '|');
2723 }
2724 break;
2725
2726 case OVS_KEY_ATTR_CT_ZONE:
2727 if (verbose || !mask_empty(ma)) {
2728 ds_put_format(ds, "%#"PRIx16, nl_attr_get_u16(a));
2729 if (!is_exact) {
2730 ds_put_format(ds, "/%#"PRIx16, nl_attr_get_u16(ma));
2731 }
2732 }
2733 break;
2734
2735 case OVS_KEY_ATTR_CT_LABELS: {
2736 const ovs_u128 *value = nl_attr_get(a);
2737 const ovs_u128 *mask = ma ? nl_attr_get(ma) : NULL;
2738
2739 format_u128(ds, value, mask, verbose);
2740 break;
2741 }
2742
2743 case OVS_KEY_ATTR_TUNNEL:
2744 format_odp_tun_attr(a, ma, ds, verbose);
2745 break;
2746
2747 case OVS_KEY_ATTR_IN_PORT:
2748 if (portno_names && verbose && is_exact) {
2749 char *name = odp_portno_names_get(portno_names,
2750 u32_to_odp(nl_attr_get_u32(a)));
2751 if (name) {
2752 ds_put_format(ds, "%s", name);
2753 } else {
2754 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
2755 }
2756 } else {
2757 ds_put_format(ds, "%"PRIu32, nl_attr_get_u32(a));
2758 if (!is_exact) {
2759 ds_put_format(ds, "/%#"PRIx32, nl_attr_get_u32(ma));
2760 }
2761 }
2762 break;
2763
2764 case OVS_KEY_ATTR_ETHERNET: {
2765 const struct ovs_key_ethernet *mask = ma ? nl_attr_get(ma) : NULL;
2766 const struct ovs_key_ethernet *key = nl_attr_get(a);
2767
2768 format_eth(ds, "src", key->eth_src, MASK(mask, eth_src), verbose);
2769 format_eth(ds, "dst", key->eth_dst, MASK(mask, eth_dst), verbose);
2770 ds_chomp(ds, ',');
2771 break;
2772 }
2773 case OVS_KEY_ATTR_VLAN:
2774 format_vlan_tci(ds, nl_attr_get_be16(a),
2775 ma ? nl_attr_get_be16(ma) : OVS_BE16_MAX, verbose);
2776 break;
2777
2778 case OVS_KEY_ATTR_MPLS: {
2779 const struct ovs_key_mpls *mpls_key = nl_attr_get(a);
2780 const struct ovs_key_mpls *mpls_mask = NULL;
2781 size_t size = nl_attr_get_size(a);
2782
2783 if (!size || size % sizeof *mpls_key) {
2784 ds_put_format(ds, "(bad key length %"PRIuSIZE")", size);
2785 return;
2786 }
2787 if (!is_exact) {
2788 mpls_mask = nl_attr_get(ma);
2789 if (size != nl_attr_get_size(ma)) {
2790 ds_put_format(ds, "(key length %"PRIuSIZE" != "
2791 "mask length %"PRIuSIZE")",
2792 size, nl_attr_get_size(ma));
2793 return;
2794 }
2795 }
2796 format_mpls(ds, mpls_key, mpls_mask, size / sizeof *mpls_key);
2797 break;
2798 }
2799 case OVS_KEY_ATTR_ETHERTYPE:
2800 ds_put_format(ds, "0x%04"PRIx16, ntohs(nl_attr_get_be16(a)));
2801 if (!is_exact) {
2802 ds_put_format(ds, "/0x%04"PRIx16, ntohs(nl_attr_get_be16(ma)));
2803 }
2804 break;
2805
2806 case OVS_KEY_ATTR_IPV4: {
2807 const struct ovs_key_ipv4 *key = nl_attr_get(a);
2808 const struct ovs_key_ipv4 *mask = ma ? nl_attr_get(ma) : NULL;
2809
2810 format_ipv4(ds, "src", key->ipv4_src, MASK(mask, ipv4_src), verbose);
2811 format_ipv4(ds, "dst", key->ipv4_dst, MASK(mask, ipv4_dst), verbose);
2812 format_u8u(ds, "proto", key->ipv4_proto, MASK(mask, ipv4_proto),
2813 verbose);
2814 format_u8x(ds, "tos", key->ipv4_tos, MASK(mask, ipv4_tos), verbose);
2815 format_u8u(ds, "ttl", key->ipv4_ttl, MASK(mask, ipv4_ttl), verbose);
2816 format_frag(ds, "frag", key->ipv4_frag, MASK(mask, ipv4_frag),
2817 verbose);
2818 ds_chomp(ds, ',');
2819 break;
2820 }
2821 case OVS_KEY_ATTR_IPV6: {
2822 const struct ovs_key_ipv6 *key = nl_attr_get(a);
2823 const struct ovs_key_ipv6 *mask = ma ? nl_attr_get(ma) : NULL;
2824
2825 format_ipv6(ds, "src", key->ipv6_src, MASK(mask, ipv6_src), verbose);
2826 format_ipv6(ds, "dst", key->ipv6_dst, MASK(mask, ipv6_dst), verbose);
2827 format_ipv6_label(ds, "label", key->ipv6_label, MASK(mask, ipv6_label),
2828 verbose);
2829 format_u8u(ds, "proto", key->ipv6_proto, MASK(mask, ipv6_proto),
2830 verbose);
2831 format_u8x(ds, "tclass", key->ipv6_tclass, MASK(mask, ipv6_tclass),
2832 verbose);
2833 format_u8u(ds, "hlimit", key->ipv6_hlimit, MASK(mask, ipv6_hlimit),
2834 verbose);
2835 format_frag(ds, "frag", key->ipv6_frag, MASK(mask, ipv6_frag),
2836 verbose);
2837 ds_chomp(ds, ',');
2838 break;
2839 }
2840 /* These have the same structure and format. */
2841 case OVS_KEY_ATTR_TCP:
2842 case OVS_KEY_ATTR_UDP:
2843 case OVS_KEY_ATTR_SCTP: {
2844 const struct ovs_key_tcp *key = nl_attr_get(a);
2845 const struct ovs_key_tcp *mask = ma ? nl_attr_get(ma) : NULL;
2846
2847 format_be16(ds, "src", key->tcp_src, MASK(mask, tcp_src), verbose);
2848 format_be16(ds, "dst", key->tcp_dst, MASK(mask, tcp_dst), verbose);
2849 ds_chomp(ds, ',');
2850 break;
2851 }
2852 case OVS_KEY_ATTR_TCP_FLAGS:
2853 if (!is_exact) {
2854 format_flags_masked(ds, NULL, packet_tcp_flag_to_string,
2855 ntohs(nl_attr_get_be16(a)),
2856 TCP_FLAGS(nl_attr_get_be16(ma)),
2857 TCP_FLAGS(OVS_BE16_MAX));
2858 } else {
2859 format_flags(ds, packet_tcp_flag_to_string,
2860 ntohs(nl_attr_get_be16(a)), '|');
2861 }
2862 break;
2863
2864 case OVS_KEY_ATTR_ICMP: {
2865 const struct ovs_key_icmp *key = nl_attr_get(a);
2866 const struct ovs_key_icmp *mask = ma ? nl_attr_get(ma) : NULL;
2867
2868 format_u8u(ds, "type", key->icmp_type, MASK(mask, icmp_type), verbose);
2869 format_u8u(ds, "code", key->icmp_code, MASK(mask, icmp_code), verbose);
2870 ds_chomp(ds, ',');
2871 break;
2872 }
2873 case OVS_KEY_ATTR_ICMPV6: {
2874 const struct ovs_key_icmpv6 *key = nl_attr_get(a);
2875 const struct ovs_key_icmpv6 *mask = ma ? nl_attr_get(ma) : NULL;
2876
2877 format_u8u(ds, "type", key->icmpv6_type, MASK(mask, icmpv6_type),
2878 verbose);
2879 format_u8u(ds, "code", key->icmpv6_code, MASK(mask, icmpv6_code),
2880 verbose);
2881 ds_chomp(ds, ',');
2882 break;
2883 }
2884 case OVS_KEY_ATTR_ARP: {
2885 const struct ovs_key_arp *mask = ma ? nl_attr_get(ma) : NULL;
2886 const struct ovs_key_arp *key = nl_attr_get(a);
2887
2888 format_ipv4(ds, "sip", key->arp_sip, MASK(mask, arp_sip), verbose);
2889 format_ipv4(ds, "tip", key->arp_tip, MASK(mask, arp_tip), verbose);
2890 format_be16(ds, "op", key->arp_op, MASK(mask, arp_op), verbose);
2891 format_eth(ds, "sha", key->arp_sha, MASK(mask, arp_sha), verbose);
2892 format_eth(ds, "tha", key->arp_tha, MASK(mask, arp_tha), verbose);
2893 ds_chomp(ds, ',');
2894 break;
2895 }
2896 case OVS_KEY_ATTR_ND: {
2897 const struct ovs_key_nd *mask = ma ? nl_attr_get(ma) : NULL;
2898 const struct ovs_key_nd *key = nl_attr_get(a);
2899
2900 format_ipv6(ds, "target", key->nd_target, MASK(mask, nd_target),
2901 verbose);
2902 format_eth(ds, "sll", key->nd_sll, MASK(mask, nd_sll), verbose);
2903 format_eth(ds, "tll", key->nd_tll, MASK(mask, nd_tll), verbose);
2904
2905 ds_chomp(ds, ',');
2906 break;
2907 }
2908 case OVS_KEY_ATTR_UNSPEC:
2909 case __OVS_KEY_ATTR_MAX:
2910 default:
2911 format_generic_odp_key(a, ds);
2912 if (!is_exact) {
2913 ds_put_char(ds, '/');
2914 format_generic_odp_key(ma, ds);
2915 }
2916 break;
2917 }
2918 ds_put_char(ds, ')');
2919 }
2920
2921 static struct nlattr *
2922 generate_all_wildcard_mask(const struct attr_len_tbl tbl[], int max,
2923 struct ofpbuf *ofp, const struct nlattr *key)
2924 {
2925 const struct nlattr *a;
2926 unsigned int left;
2927 int type = nl_attr_type(key);
2928 int size = nl_attr_get_size(key);
2929
2930 if (odp_key_attr_len(tbl, max, type) != ATTR_LEN_NESTED) {
2931 nl_msg_put_unspec_zero(ofp, type, size);
2932 } else {
2933 size_t nested_mask;
2934
2935 if (tbl[type].next) {
2936 tbl = tbl[type].next;
2937 max = tbl[type].next_max;
2938 }
2939
2940 nested_mask = nl_msg_start_nested(ofp, type);
2941 NL_ATTR_FOR_EACH(a, left, key, nl_attr_get_size(key)) {
2942 generate_all_wildcard_mask(tbl, max, ofp, nl_attr_get(a));
2943 }
2944 nl_msg_end_nested(ofp, nested_mask);
2945 }
2946
2947 return ofp->base;
2948 }
2949
2950 static void
2951 format_u128(struct ds *ds, const ovs_u128 *key, const ovs_u128 *mask,
2952 bool verbose)
2953 {
2954 if (verbose || (mask && !ovs_u128_is_zero(mask))) {
2955 ovs_be128 value;
2956
2957 value = hton128(*key);
2958 ds_put_hex(ds, &value, sizeof value);
2959 if (mask && !(ovs_u128_is_ones(mask))) {
2960 value = hton128(*mask);
2961 ds_put_char(ds, '/');
2962 ds_put_hex(ds, &value, sizeof value);
2963 }
2964 }
2965 }
2966
2967 static int
2968 scan_u128(const char *s_, ovs_u128 *value, ovs_u128 *mask)
2969 {
2970 char *s = CONST_CAST(char *, s_);
2971 ovs_be128 be_value;
2972 ovs_be128 be_mask;
2973
2974 if (!parse_int_string(s, (uint8_t *)&be_value, sizeof be_value, &s)) {
2975 *value = ntoh128(be_value);
2976
2977 if (mask) {
2978 int n;
2979
2980 if (ovs_scan(s, "/%n", &n)) {
2981 int error;
2982
2983 s += n;
2984 error = parse_int_string(s, (uint8_t *)&be_mask,
2985 sizeof be_mask, &s);
2986 if (error) {
2987 return error;
2988 }
2989 *mask = ntoh128(be_mask);
2990 } else {
2991 *mask = OVS_U128_MAX;
2992 }
2993 }
2994 return s - s_;
2995 }
2996
2997 return 0;
2998 }
2999
3000 int
3001 odp_ufid_from_string(const char *s_, ovs_u128 *ufid)
3002 {
3003 const char *s = s_;
3004
3005 if (ovs_scan(s, "ufid:")) {
3006 s += 5;
3007
3008 if (!uuid_from_string_prefix((struct uuid *)ufid, s)) {
3009 return -EINVAL;
3010 }
3011 s += UUID_LEN;
3012
3013 return s - s_;
3014 }
3015
3016 return 0;
3017 }
3018
3019 void
3020 odp_format_ufid(const ovs_u128 *ufid, struct ds *ds)
3021 {
3022 ds_put_format(ds, "ufid:"UUID_FMT, UUID_ARGS((struct uuid *)ufid));
3023 }
3024
3025 /* Appends to 'ds' a string representation of the 'key_len' bytes of
3026 * OVS_KEY_ATTR_* attributes in 'key'. If non-null, additionally formats the
3027 * 'mask_len' bytes of 'mask' which apply to 'key'. If 'portno_names' is
3028 * non-null and 'verbose' is true, translates odp port number to its name. */
3029 void
3030 odp_flow_format(const struct nlattr *key, size_t key_len,
3031 const struct nlattr *mask, size_t mask_len,
3032 const struct hmap *portno_names, struct ds *ds, bool verbose)
3033 {
3034 if (key_len) {
3035 const struct nlattr *a;
3036 unsigned int left;
3037 bool has_ethtype_key = false;
3038 const struct nlattr *ma = NULL;
3039 struct ofpbuf ofp;
3040 bool first_field = true;
3041
3042 ofpbuf_init(&ofp, 100);
3043 NL_ATTR_FOR_EACH (a, left, key, key_len) {
3044 bool is_nested_attr;
3045 bool is_wildcard = false;
3046 int attr_type = nl_attr_type(a);
3047
3048 if (attr_type == OVS_KEY_ATTR_ETHERTYPE) {
3049 has_ethtype_key = true;
3050 }
3051
3052 is_nested_attr = odp_key_attr_len(ovs_flow_key_attr_lens,
3053 OVS_KEY_ATTR_MAX, attr_type) ==
3054 ATTR_LEN_NESTED;
3055
3056 if (mask && mask_len) {
3057 ma = nl_attr_find__(mask, mask_len, nl_attr_type(a));
3058 is_wildcard = ma ? odp_mask_attr_is_wildcard(ma) : true;
3059 }
3060
3061 if (verbose || !is_wildcard || is_nested_attr) {
3062 if (is_wildcard && !ma) {
3063 ma = generate_all_wildcard_mask(ovs_flow_key_attr_lens,
3064 OVS_KEY_ATTR_MAX,
3065 &ofp, a);
3066 }
3067 if (!first_field) {
3068 ds_put_char(ds, ',');
3069 }
3070 format_odp_key_attr(a, ma, portno_names, ds, verbose);
3071 first_field = false;
3072 }
3073 ofpbuf_clear(&ofp);
3074 }
3075 ofpbuf_uninit(&ofp);
3076
3077 if (left) {
3078 int i;
3079
3080 if (left == key_len) {
3081 ds_put_cstr(ds, "<empty>");
3082 }
3083 ds_put_format(ds, ",***%u leftover bytes*** (", left);
3084 for (i = 0; i < left; i++) {
3085 ds_put_format(ds, "%02x", ((const uint8_t *) a)[i]);
3086 }
3087 ds_put_char(ds, ')');
3088 }
3089 if (!has_ethtype_key) {
3090 ma = nl_attr_find__(mask, mask_len, OVS_KEY_ATTR_ETHERTYPE);
3091 if (ma) {
3092 ds_put_format(ds, ",eth_type(0/0x%04"PRIx16")",
3093 ntohs(nl_attr_get_be16(ma)));
3094 }
3095 }
3096 } else {
3097 ds_put_cstr(ds, "<empty>");
3098 }
3099 }
3100
3101 /* Appends to 'ds' a string representation of the 'key_len' bytes of
3102 * OVS_KEY_ATTR_* attributes in 'key'. */
3103 void
3104 odp_flow_key_format(const struct nlattr *key,
3105 size_t key_len, struct ds *ds)
3106 {
3107 odp_flow_format(key, key_len, NULL, 0, NULL, ds, true);
3108 }
3109
3110 static bool
3111 ovs_frag_type_from_string(const char *s, enum ovs_frag_type *type)
3112 {
3113 if (!strcasecmp(s, "no")) {
3114 *type = OVS_FRAG_TYPE_NONE;
3115 } else if (!strcasecmp(s, "first")) {
3116 *type = OVS_FRAG_TYPE_FIRST;
3117 } else if (!strcasecmp(s, "later")) {
3118 *type = OVS_FRAG_TYPE_LATER;
3119 } else {
3120 return false;
3121 }
3122 return true;
3123 }
3124
3125 /* Parsing. */
3126
3127 static int
3128 scan_eth(const char *s, struct eth_addr *key, struct eth_addr *mask)
3129 {
3130 int n;
3131
3132 if (ovs_scan(s, ETH_ADDR_SCAN_FMT"%n",
3133 ETH_ADDR_SCAN_ARGS(*key), &n)) {
3134 int len = n;
3135
3136 if (mask) {
3137 if (ovs_scan(s + len, "/"ETH_ADDR_SCAN_FMT"%n",
3138 ETH_ADDR_SCAN_ARGS(*mask), &n)) {
3139 len += n;
3140 } else {
3141 memset(mask, 0xff, sizeof *mask);
3142 }
3143 }
3144 return len;
3145 }
3146 return 0;
3147 }
3148
3149 static int
3150 scan_ipv4(const char *s, ovs_be32 *key, ovs_be32 *mask)
3151 {
3152 int n;
3153
3154 if (ovs_scan(s, IP_SCAN_FMT"%n", IP_SCAN_ARGS(key), &n)) {
3155 int len = n;
3156
3157 if (mask) {
3158 if (ovs_scan(s + len, "/"IP_SCAN_FMT"%n",
3159 IP_SCAN_ARGS(mask), &n)) {
3160 len += n;
3161 } else {
3162 *mask = OVS_BE32_MAX;
3163 }
3164 }
3165 return len;
3166 }
3167 return 0;
3168 }
3169
3170 static int
3171 scan_in6_addr(const char *s, struct in6_addr *key, struct in6_addr *mask)
3172 {
3173 int n;
3174 char ipv6_s[IPV6_SCAN_LEN + 1];
3175
3176 if (ovs_scan(s, IPV6_SCAN_FMT"%n", ipv6_s, &n)
3177 && inet_pton(AF_INET6, ipv6_s, key) == 1) {
3178 int len = n;
3179
3180 if (mask) {
3181 if (ovs_scan(s + len, "/"IPV6_SCAN_FMT"%n", ipv6_s, &n)
3182 && inet_pton(AF_INET6, ipv6_s, mask) == 1) {
3183 len += n;
3184 } else {
3185 memset(mask, 0xff, sizeof *mask);
3186 }
3187 }
3188 return len;
3189 }
3190 return 0;
3191 }
3192
3193 static int
3194 scan_ipv6(const char *s, ovs_be32 (*key)[4], ovs_be32 (*mask)[4])
3195 {
3196 return scan_in6_addr(s, key ? (struct in6_addr *) *key : NULL,
3197 mask ? (struct in6_addr *) *mask : NULL);
3198 }
3199
3200 static int
3201 scan_ipv6_label(const char *s, ovs_be32 *key, ovs_be32 *mask)
3202 {
3203 int key_, mask_;
3204 int n;
3205
3206 if (ovs_scan(s, "%i%n", &key_, &n)
3207 && (key_ & ~IPV6_LABEL_MASK) == 0) {
3208 int len = n;
3209
3210 *key = htonl(key_);
3211 if (mask) {
3212 if (ovs_scan(s + len, "/%i%n", &mask_, &n)
3213 && (mask_ & ~IPV6_LABEL_MASK) == 0) {
3214 len += n;
3215 *mask = htonl(mask_);
3216 } else {
3217 *mask = htonl(IPV6_LABEL_MASK);
3218 }
3219 }
3220 return len;
3221 }
3222 return 0;
3223 }
3224
3225 static int
3226 scan_u8(const char *s, uint8_t *key, uint8_t *mask)
3227 {
3228 int n;
3229
3230 if (ovs_scan(s, "%"SCNi8"%n", key, &n)) {
3231 int len = n;
3232
3233 if (mask) {
3234 if (ovs_scan(s + len, "/%"SCNi8"%n", mask, &n)) {
3235 len += n;
3236 } else {
3237 *mask = UINT8_MAX;
3238 }
3239 }
3240 return len;
3241 }
3242 return 0;
3243 }
3244
3245 static int
3246 scan_u16(const char *s, uint16_t *key, uint16_t *mask)
3247 {
3248 int n;
3249
3250 if (ovs_scan(s, "%"SCNi16"%n", key, &n)) {
3251 int len = n;
3252
3253 if (mask) {
3254 if (ovs_scan(s + len, "/%"SCNi16"%n", mask, &n)) {
3255 len += n;
3256 } else {
3257 *mask = UINT16_MAX;
3258 }
3259 }
3260 return len;
3261 }
3262 return 0;
3263 }
3264
3265 static int
3266 scan_u32(const char *s, uint32_t *key, uint32_t *mask)
3267 {
3268 int n;
3269
3270 if (ovs_scan(s, "%"SCNi32"%n", key, &n)) {
3271 int len = n;
3272
3273 if (mask) {
3274 if (ovs_scan(s + len, "/%"SCNi32"%n", mask, &n)) {
3275 len += n;
3276 } else {
3277 *mask = UINT32_MAX;
3278 }
3279 }
3280 return len;
3281 }
3282 return 0;
3283 }
3284
3285 static int
3286 scan_be16(const char *s, ovs_be16 *key, ovs_be16 *mask)
3287 {
3288 uint16_t key_, mask_;
3289 int n;
3290
3291 if (ovs_scan(s, "%"SCNi16"%n", &key_, &n)) {
3292 int len = n;
3293
3294 *key = htons(key_);
3295 if (mask) {
3296 if (ovs_scan(s + len, "/%"SCNi16"%n", &mask_, &n)) {
3297 len += n;
3298 *mask = htons(mask_);
3299 } else {
3300 *mask = OVS_BE16_MAX;
3301 }
3302 }
3303 return len;
3304 }
3305 return 0;
3306 }
3307
3308 static int
3309 scan_be64(const char *s, ovs_be64 *key, ovs_be64 *mask)
3310 {
3311 uint64_t key_, mask_;
3312 int n;
3313
3314 if (ovs_scan(s, "%"SCNi64"%n", &key_, &n)) {
3315 int len = n;
3316
3317 *key = htonll(key_);
3318 if (mask) {
3319 if (ovs_scan(s + len, "/%"SCNi64"%n", &mask_, &n)) {
3320 len += n;
3321 *mask = htonll(mask_);
3322 } else {
3323 *mask = OVS_BE64_MAX;
3324 }
3325 }
3326 return len;
3327 }
3328 return 0;
3329 }
3330
3331 static int
3332 scan_tun_flags(const char *s, uint16_t *key, uint16_t *mask)
3333 {
3334 uint32_t flags, fmask;
3335 int n;
3336
3337 n = parse_odp_flags(s, flow_tun_flag_to_string, &flags,
3338 FLOW_TNL_F_MASK, mask ? &fmask : NULL);
3339 if (n >= 0 && s[n] == ')') {
3340 *key = flags;
3341 if (mask) {
3342 *mask = fmask;
3343 }
3344 return n + 1;
3345 }
3346 return 0;
3347 }
3348
3349 static int
3350 scan_tcp_flags(const char *s, ovs_be16 *key, ovs_be16 *mask)
3351 {
3352 uint32_t flags, fmask;
3353 int n;
3354
3355 n = parse_odp_flags(s, packet_tcp_flag_to_string, &flags,
3356 TCP_FLAGS(OVS_BE16_MAX), mask ? &fmask : NULL);
3357 if (n >= 0) {
3358 *key = htons(flags);
3359 if (mask) {
3360 *mask = htons(fmask);
3361 }
3362 return n;
3363 }
3364 return 0;
3365 }
3366
3367 static uint32_t
3368 ovs_to_odp_ct_state(uint8_t state)
3369 {
3370 uint32_t odp = 0;
3371
3372 if (state & CS_NEW) {
3373 odp |= OVS_CS_F_NEW;
3374 }
3375 if (state & CS_ESTABLISHED) {
3376 odp |= OVS_CS_F_ESTABLISHED;
3377 }
3378 if (state & CS_RELATED) {
3379 odp |= OVS_CS_F_RELATED;
3380 }
3381 if (state & CS_INVALID) {
3382 odp |= OVS_CS_F_INVALID;
3383 }
3384 if (state & CS_REPLY_DIR) {
3385 odp |= OVS_CS_F_REPLY_DIR;
3386 }
3387 if (state & CS_TRACKED) {
3388 odp |= OVS_CS_F_TRACKED;
3389 }
3390 if (state & CS_SRC_NAT) {
3391 odp |= OVS_CS_F_SRC_NAT;
3392 }
3393 if (state & CS_DST_NAT) {
3394 odp |= OVS_CS_F_DST_NAT;
3395 }
3396
3397 return odp;
3398 }
3399
3400 static uint8_t
3401 odp_to_ovs_ct_state(uint32_t flags)
3402 {
3403 uint32_t state = 0;
3404
3405 if (flags & OVS_CS_F_NEW) {
3406 state |= CS_NEW;
3407 }
3408 if (flags & OVS_CS_F_ESTABLISHED) {
3409 state |= CS_ESTABLISHED;
3410 }
3411 if (flags & OVS_CS_F_RELATED) {
3412 state |= CS_RELATED;
3413 }
3414 if (flags & OVS_CS_F_INVALID) {
3415 state |= CS_INVALID;
3416 }
3417 if (flags & OVS_CS_F_REPLY_DIR) {
3418 state |= CS_REPLY_DIR;
3419 }
3420 if (flags & OVS_CS_F_TRACKED) {
3421 state |= CS_TRACKED;
3422 }
3423 if (flags & OVS_CS_F_SRC_NAT) {
3424 state |= CS_SRC_NAT;
3425 }
3426 if (flags & OVS_CS_F_DST_NAT) {
3427 state |= CS_DST_NAT;
3428 }
3429
3430 return state;
3431 }
3432
3433 static int
3434 scan_ct_state(const char *s, uint32_t *key, uint32_t *mask)
3435 {
3436 uint32_t flags, fmask;
3437 int n;
3438
3439 n = parse_flags(s, odp_ct_state_to_string, ')', NULL, NULL, &flags,
3440 ovs_to_odp_ct_state(CS_SUPPORTED_MASK),
3441 mask ? &fmask : NULL);
3442
3443 if (n >= 0) {
3444 *key = flags;
3445 if (mask) {
3446 *mask = fmask;
3447 }
3448 return n;
3449 }
3450 return 0;
3451 }
3452
3453 static int
3454 scan_frag(const char *s, uint8_t *key, uint8_t *mask)
3455 {
3456 int n;
3457 char frag[8];
3458 enum ovs_frag_type frag_type;
3459
3460 if (ovs_scan(s, "%7[a-z]%n", frag, &n)
3461 && ovs_frag_type_from_string(frag, &frag_type)) {
3462 int len = n;
3463
3464 *key = frag_type;
3465 if (mask) {
3466 *mask = UINT8_MAX;
3467 }
3468 return len;
3469 }
3470 return 0;
3471 }
3472
3473 static int
3474 scan_port(const char *s, uint32_t *key, uint32_t *mask,
3475 const struct simap *port_names)
3476 {
3477 int n;
3478
3479 if (ovs_scan(s, "%"SCNi32"%n", key, &n)) {
3480 int len = n;
3481
3482 if (mask) {
3483 if (ovs_scan(s + len, "/%"SCNi32"%n", mask, &n)) {
3484 len += n;
3485 } else {
3486 *mask = UINT32_MAX;
3487 }
3488 }
3489 return len;
3490 } else if (port_names) {
3491 const struct simap_node *node;
3492 int len;
3493
3494 len = strcspn(s, ")");
3495 node = simap_find_len(port_names, s, len);
3496 if (node) {
3497 *key = node->data;
3498
3499 if (mask) {
3500 *mask = UINT32_MAX;
3501 }
3502 return len;
3503 }
3504 }
3505 return 0;
3506 }
3507
3508 /* Helper for vlan parsing. */
3509 struct ovs_key_vlan__ {
3510 ovs_be16 tci;
3511 };
3512
3513 static bool
3514 set_be16_bf(ovs_be16 *bf, uint8_t bits, uint8_t offset, uint16_t value)
3515 {
3516 const uint16_t mask = ((1U << bits) - 1) << offset;
3517
3518 if (value >> bits) {
3519 return false;
3520 }
3521
3522 *bf = htons((ntohs(*bf) & ~mask) | (value << offset));
3523 return true;
3524 }
3525
3526 static int
3527 scan_be16_bf(const char *s, ovs_be16 *key, ovs_be16 *mask, uint8_t bits,
3528 uint8_t offset)
3529 {
3530 uint16_t key_, mask_;
3531 int n;
3532
3533 if (ovs_scan(s, "%"SCNi16"%n", &key_, &n)) {
3534 int len = n;
3535
3536 if (set_be16_bf(key, bits, offset, key_)) {
3537 if (mask) {
3538 if (ovs_scan(s + len, "/%"SCNi16"%n", &mask_, &n)) {
3539 len += n;
3540
3541 if (!set_be16_bf(mask, bits, offset, mask_)) {
3542 return 0;
3543 }
3544 } else {
3545 *mask |= htons(((1U << bits) - 1) << offset);
3546 }
3547 }
3548 return len;
3549 }
3550 }
3551 return 0;
3552 }
3553
3554 static int
3555 scan_vid(const char *s, ovs_be16 *key, ovs_be16 *mask)
3556 {
3557 return scan_be16_bf(s, key, mask, 12, VLAN_VID_SHIFT);
3558 }
3559
3560 static int
3561 scan_pcp(const char *s, ovs_be16 *key, ovs_be16 *mask)
3562 {
3563 return scan_be16_bf(s, key, mask, 3, VLAN_PCP_SHIFT);
3564 }
3565
3566 static int
3567 scan_cfi(const char *s, ovs_be16 *key, ovs_be16 *mask)
3568 {
3569 return scan_be16_bf(s, key, mask, 1, VLAN_CFI_SHIFT);
3570 }
3571
3572 /* For MPLS. */
3573 static bool
3574 set_be32_bf(ovs_be32 *bf, uint8_t bits, uint8_t offset, uint32_t value)
3575 {
3576 const uint32_t mask = ((1U << bits) - 1) << offset;
3577
3578 if (value >> bits) {
3579 return false;
3580 }
3581
3582 *bf = htonl((ntohl(*bf) & ~mask) | (value << offset));
3583 return true;
3584 }
3585
3586 static int
3587 scan_be32_bf(const char *s, ovs_be32 *key, ovs_be32 *mask, uint8_t bits,
3588 uint8_t offset)
3589 {
3590 uint32_t key_, mask_;
3591 int n;
3592
3593 if (ovs_scan(s, "%"SCNi32"%n", &key_, &n)) {
3594 int len = n;
3595
3596 if (set_be32_bf(key, bits, offset, key_)) {
3597 if (mask) {
3598 if (ovs_scan(s + len, "/%"SCNi32"%n", &mask_, &n)) {
3599 len += n;
3600
3601 if (!set_be32_bf(mask, bits, offset, mask_)) {
3602 return 0;
3603 }
3604 } else {
3605 *mask |= htonl(((1U << bits) - 1) << offset);
3606 }
3607 }
3608 return len;
3609 }
3610 }
3611 return 0;
3612 }
3613
3614 static int
3615 scan_mpls_label(const char *s, ovs_be32 *key, ovs_be32 *mask)
3616 {
3617 return scan_be32_bf(s, key, mask, 20, MPLS_LABEL_SHIFT);
3618 }
3619
3620 static int
3621 scan_mpls_tc(const char *s, ovs_be32 *key, ovs_be32 *mask)
3622 {
3623 return scan_be32_bf(s, key, mask, 3, MPLS_TC_SHIFT);
3624 }
3625
3626 static int
3627 scan_mpls_ttl(const char *s, ovs_be32 *key, ovs_be32 *mask)
3628 {
3629 return scan_be32_bf(s, key, mask, 8, MPLS_TTL_SHIFT);
3630 }
3631
3632 static int
3633 scan_mpls_bos(const char *s, ovs_be32 *key, ovs_be32 *mask)
3634 {
3635 return scan_be32_bf(s, key, mask, 1, MPLS_BOS_SHIFT);
3636 }
3637
3638 static int
3639 scan_vxlan_gbp(const char *s, uint32_t *key, uint32_t *mask)
3640 {
3641 const char *s_base = s;
3642 ovs_be16 id = 0, id_mask = 0;
3643 uint8_t flags = 0, flags_mask = 0;
3644
3645 if (!strncmp(s, "id=", 3)) {
3646 s += 3;
3647 s += scan_be16(s, &id, mask ? &id_mask : NULL);
3648 }
3649
3650 if (s[0] == ',') {
3651 s++;
3652 }
3653 if (!strncmp(s, "flags=", 6)) {
3654 s += 6;
3655 s += scan_u8(s, &flags, mask ? &flags_mask : NULL);
3656 }
3657
3658 if (!strncmp(s, "))", 2)) {
3659 s += 2;
3660
3661 *key = (flags << 16) | ntohs(id);
3662 if (mask) {
3663 *mask = (flags_mask << 16) | ntohs(id_mask);
3664 }
3665
3666 return s - s_base;
3667 }
3668
3669 return 0;
3670 }
3671
3672 static int
3673 scan_geneve(const char *s, struct geneve_scan *key, struct geneve_scan *mask)
3674 {
3675 const char *s_base = s;
3676 struct geneve_opt *opt = key->d;
3677 struct geneve_opt *opt_mask = mask ? mask->d : NULL;
3678 int len_remain = sizeof key->d;
3679
3680 while (s[0] == '{' && len_remain >= sizeof *opt) {
3681 int data_len = 0;
3682
3683 s++;
3684 len_remain -= sizeof *opt;
3685
3686 if (!strncmp(s, "class=", 6)) {
3687 s += 6;
3688 s += scan_be16(s, &opt->opt_class,
3689 mask ? &opt_mask->opt_class : NULL);
3690 } else if (mask) {
3691 memset(&opt_mask->opt_class, 0, sizeof opt_mask->opt_class);
3692 }
3693
3694 if (s[0] == ',') {
3695 s++;
3696 }
3697 if (!strncmp(s, "type=", 5)) {
3698 s += 5;
3699 s += scan_u8(s, &opt->type, mask ? &opt_mask->type : NULL);
3700 } else if (mask) {
3701 memset(&opt_mask->type, 0, sizeof opt_mask->type);
3702 }
3703
3704 if (s[0] == ',') {
3705 s++;
3706 }
3707 if (!strncmp(s, "len=", 4)) {
3708 uint8_t opt_len, opt_len_mask;
3709 s += 4;
3710 s += scan_u8(s, &opt_len, mask ? &opt_len_mask : NULL);
3711
3712 if (opt_len > 124 || opt_len % 4 || opt_len > len_remain) {
3713 return 0;
3714 }
3715 opt->length = opt_len / 4;
3716 if (mask) {
3717 opt_mask->length = opt_len_mask;
3718 }
3719 data_len = opt_len;
3720 } else if (mask) {
3721 memset(&opt_mask->type, 0, sizeof opt_mask->type);
3722 }
3723
3724 if (s[0] == ',') {
3725 s++;
3726 }
3727 if (parse_int_string(s, (uint8_t *)(opt + 1), data_len, (char **)&s)) {
3728 return 0;
3729 }
3730
3731 if (mask) {
3732 if (s[0] == '/') {
3733 s++;
3734 if (parse_int_string(s, (uint8_t *)(opt_mask + 1),
3735 data_len, (char **)&s)) {
3736 return 0;
3737 }
3738 }
3739 opt_mask->r1 = 0;
3740 opt_mask->r2 = 0;
3741 opt_mask->r3 = 0;
3742 }
3743
3744 if (s[0] == '}') {
3745 s++;
3746 opt += 1 + data_len / 4;
3747 if (mask) {
3748 opt_mask += 1 + data_len / 4;
3749 }
3750 len_remain -= data_len;
3751 }
3752 }
3753
3754 if (s[0] == ')') {
3755 int len = sizeof key->d - len_remain;
3756
3757 s++;
3758 key->len = len;
3759 if (mask) {
3760 mask->len = len;
3761 }
3762 return s - s_base;
3763 }
3764
3765 return 0;
3766 }
3767
3768 static void
3769 tun_flags_to_attr(struct ofpbuf *a, const void *data_)
3770 {
3771 const uint16_t *flags = data_;
3772
3773 if (*flags & FLOW_TNL_F_DONT_FRAGMENT) {
3774 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT);
3775 }
3776 if (*flags & FLOW_TNL_F_CSUM) {
3777 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_CSUM);
3778 }
3779 if (*flags & FLOW_TNL_F_OAM) {
3780 nl_msg_put_flag(a, OVS_TUNNEL_KEY_ATTR_OAM);
3781 }
3782 }
3783
3784 static void
3785 vxlan_gbp_to_attr(struct ofpbuf *a, const void *data_)
3786 {
3787 const uint32_t *gbp = data_;
3788
3789 if (*gbp) {
3790 size_t vxlan_opts_ofs;
3791
3792 vxlan_opts_ofs = nl_msg_start_nested(a, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS);
3793 nl_msg_put_u32(a, OVS_VXLAN_EXT_GBP, *gbp);
3794 nl_msg_end_nested(a, vxlan_opts_ofs);
3795 }
3796 }
3797
3798 static void
3799 geneve_to_attr(struct ofpbuf *a, const void *data_)
3800 {
3801 const struct geneve_scan *geneve = data_;
3802
3803 nl_msg_put_unspec(a, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS, geneve->d,
3804 geneve->len);
3805 }
3806
3807 #define SCAN_PUT_ATTR(BUF, ATTR, DATA, FUNC) \
3808 { \
3809 unsigned long call_fn = (unsigned long)FUNC; \
3810 if (call_fn) { \
3811 typedef void (*fn)(struct ofpbuf *, const void *); \
3812 fn func = FUNC; \
3813 func(BUF, &(DATA)); \
3814 } else { \
3815 nl_msg_put_unspec(BUF, ATTR, &(DATA), sizeof (DATA)); \
3816 } \
3817 }
3818
3819 #define SCAN_IF(NAME) \
3820 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3821 const char *start = s; \
3822 int len; \
3823 \
3824 s += strlen(NAME)
3825
3826 /* Usually no special initialization is needed. */
3827 #define SCAN_BEGIN(NAME, TYPE) \
3828 SCAN_IF(NAME); \
3829 TYPE skey, smask; \
3830 memset(&skey, 0, sizeof skey); \
3831 memset(&smask, 0, sizeof smask); \
3832 do { \
3833 len = 0;
3834
3835 /* Init as fully-masked as mask will not be scanned. */
3836 #define SCAN_BEGIN_FULLY_MASKED(NAME, TYPE) \
3837 SCAN_IF(NAME); \
3838 TYPE skey, smask; \
3839 memset(&skey, 0, sizeof skey); \
3840 memset(&smask, 0xff, sizeof smask); \
3841 do { \
3842 len = 0;
3843
3844 /* VLAN needs special initialization. */
3845 #define SCAN_BEGIN_INIT(NAME, TYPE, KEY_INIT, MASK_INIT) \
3846 SCAN_IF(NAME); \
3847 TYPE skey = KEY_INIT; \
3848 TYPE smask = MASK_INIT; \
3849 do { \
3850 len = 0;
3851
3852 /* Scan unnamed entry as 'TYPE' */
3853 #define SCAN_TYPE(TYPE, KEY, MASK) \
3854 len = scan_##TYPE(s, KEY, MASK); \
3855 if (len == 0) { \
3856 return -EINVAL; \
3857 } \
3858 s += len
3859
3860 /* Scan named ('NAME') entry 'FIELD' as 'TYPE'. */
3861 #define SCAN_FIELD(NAME, TYPE, FIELD) \
3862 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3863 s += strlen(NAME); \
3864 SCAN_TYPE(TYPE, &skey.FIELD, mask ? &smask.FIELD : NULL); \
3865 continue; \
3866 }
3867
3868 #define SCAN_FINISH() \
3869 } while (*s++ == ',' && len != 0); \
3870 if (s[-1] != ')') { \
3871 return -EINVAL; \
3872 }
3873
3874 #define SCAN_FINISH_SINGLE() \
3875 } while (false); \
3876 if (*s++ != ')') { \
3877 return -EINVAL; \
3878 }
3879
3880 /* Beginning of nested attribute. */
3881 #define SCAN_BEGIN_NESTED(NAME, ATTR) \
3882 SCAN_IF(NAME); \
3883 size_t key_offset, mask_offset; \
3884 key_offset = nl_msg_start_nested(key, ATTR); \
3885 if (mask) { \
3886 mask_offset = nl_msg_start_nested(mask, ATTR); \
3887 } \
3888 do { \
3889 len = 0;
3890
3891 #define SCAN_END_NESTED() \
3892 SCAN_FINISH(); \
3893 nl_msg_end_nested(key, key_offset); \
3894 if (mask) { \
3895 nl_msg_end_nested(mask, mask_offset); \
3896 } \
3897 return s - start; \
3898 }
3899
3900 #define SCAN_FIELD_NESTED__(NAME, TYPE, SCAN_AS, ATTR, FUNC) \
3901 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3902 TYPE skey, smask; \
3903 memset(&skey, 0, sizeof skey); \
3904 memset(&smask, 0xff, sizeof smask); \
3905 s += strlen(NAME); \
3906 SCAN_TYPE(SCAN_AS, &skey, &smask); \
3907 SCAN_PUT(ATTR, FUNC); \
3908 continue; \
3909 }
3910
3911 #define SCAN_FIELD_NESTED(NAME, TYPE, SCAN_AS, ATTR) \
3912 SCAN_FIELD_NESTED__(NAME, TYPE, SCAN_AS, ATTR, NULL)
3913
3914 #define SCAN_FIELD_NESTED_FUNC(NAME, TYPE, SCAN_AS, FUNC) \
3915 SCAN_FIELD_NESTED__(NAME, TYPE, SCAN_AS, 0, FUNC)
3916
3917 #define SCAN_PUT(ATTR, FUNC) \
3918 SCAN_PUT_ATTR(key, ATTR, skey, FUNC); \
3919 if (mask) \
3920 SCAN_PUT_ATTR(mask, ATTR, smask, FUNC); \
3921
3922 #define SCAN_END(ATTR) \
3923 SCAN_FINISH(); \
3924 SCAN_PUT(ATTR, NULL); \
3925 return s - start; \
3926 }
3927
3928 #define SCAN_BEGIN_ARRAY(NAME, TYPE, CNT) \
3929 SCAN_IF(NAME); \
3930 TYPE skey[CNT], smask[CNT]; \
3931 memset(&skey, 0, sizeof skey); \
3932 memset(&smask, 0, sizeof smask); \
3933 int idx = 0, cnt = CNT; \
3934 uint64_t fields = 0; \
3935 do { \
3936 int field = 0; \
3937 len = 0;
3938
3939 /* Scan named ('NAME') entry 'FIELD' as 'TYPE'. */
3940 #define SCAN_FIELD_ARRAY(NAME, TYPE, FIELD) \
3941 if (strncmp(s, NAME, strlen(NAME)) == 0) { \
3942 if (fields & (1UL << field)) { \
3943 fields = 0; \
3944 if (++idx == cnt) { \
3945 break; \
3946 } \
3947 } \
3948 s += strlen(NAME); \
3949 SCAN_TYPE(TYPE, &skey[idx].FIELD, mask ? &smask[idx].FIELD : NULL); \
3950 fields |= 1UL << field; \
3951 continue; \
3952 } \
3953 field++;
3954
3955 #define SCAN_PUT_ATTR_ARRAY(BUF, ATTR, DATA, CNT) \
3956 nl_msg_put_unspec(BUF, ATTR, &(DATA), sizeof (DATA)[0] * (CNT)); \
3957
3958 #define SCAN_PUT_ARRAY(ATTR, CNT) \
3959 SCAN_PUT_ATTR_ARRAY(key, ATTR, skey, CNT); \
3960 if (mask) { \
3961 SCAN_PUT_ATTR_ARRAY(mask, ATTR, smask, CNT); \
3962 }
3963
3964 #define SCAN_END_ARRAY(ATTR) \
3965 SCAN_FINISH(); \
3966 if (idx == cnt) { \
3967 return -EINVAL; \
3968 } \
3969 SCAN_PUT_ARRAY(ATTR, idx + 1); \
3970 return s - start; \
3971 }
3972
3973 #define SCAN_END_SINGLE(ATTR) \
3974 SCAN_FINISH_SINGLE(); \
3975 SCAN_PUT(ATTR, NULL); \
3976 return s - start; \
3977 }
3978
3979 #define SCAN_SINGLE(NAME, TYPE, SCAN_AS, ATTR) \
3980 SCAN_BEGIN(NAME, TYPE) { \
3981 SCAN_TYPE(SCAN_AS, &skey, &smask); \
3982 } SCAN_END_SINGLE(ATTR)
3983
3984 #define SCAN_SINGLE_FULLY_MASKED(NAME, TYPE, SCAN_AS, ATTR) \
3985 SCAN_BEGIN_FULLY_MASKED(NAME, TYPE) { \
3986 SCAN_TYPE(SCAN_AS, &skey, NULL); \
3987 } SCAN_END_SINGLE(ATTR)
3988
3989 /* scan_port needs one extra argument. */
3990 #define SCAN_SINGLE_PORT(NAME, TYPE, ATTR) \
3991 SCAN_BEGIN(NAME, TYPE) { \
3992 len = scan_port(s, &skey, &smask, port_names); \
3993 if (len == 0) { \
3994 return -EINVAL; \
3995 } \
3996 s += len; \
3997 } SCAN_END_SINGLE(ATTR)
3998
3999 static int
4000 parse_odp_key_mask_attr(const char *s, const struct simap *port_names,
4001 struct ofpbuf *key, struct ofpbuf *mask)
4002 {
4003 ovs_u128 ufid;
4004 int len;
4005
4006 /* Skip UFID. */
4007 len = odp_ufid_from_string(s, &ufid);
4008 if (len) {
4009 return len;
4010 }
4011
4012 SCAN_SINGLE("skb_priority(", uint32_t, u32, OVS_KEY_ATTR_PRIORITY);
4013 SCAN_SINGLE("skb_mark(", uint32_t, u32, OVS_KEY_ATTR_SKB_MARK);
4014 SCAN_SINGLE_FULLY_MASKED("recirc_id(", uint32_t, u32,
4015 OVS_KEY_ATTR_RECIRC_ID);
4016 SCAN_SINGLE("dp_hash(", uint32_t, u32, OVS_KEY_ATTR_DP_HASH);
4017
4018 SCAN_SINGLE("ct_state(", uint32_t, ct_state, OVS_KEY_ATTR_CT_STATE);
4019 SCAN_SINGLE("ct_zone(", uint16_t, u16, OVS_KEY_ATTR_CT_ZONE);
4020 SCAN_SINGLE("ct_mark(", uint32_t, u32, OVS_KEY_ATTR_CT_MARK);
4021 SCAN_SINGLE("ct_label(", ovs_u128, u128, OVS_KEY_ATTR_CT_LABELS);
4022
4023 SCAN_BEGIN_NESTED("tunnel(", OVS_KEY_ATTR_TUNNEL) {
4024 SCAN_FIELD_NESTED("tun_id=", ovs_be64, be64, OVS_TUNNEL_KEY_ATTR_ID);
4025 SCAN_FIELD_NESTED("src=", ovs_be32, ipv4, OVS_TUNNEL_KEY_ATTR_IPV4_SRC);
4026 SCAN_FIELD_NESTED("dst=", ovs_be32, ipv4, OVS_TUNNEL_KEY_ATTR_IPV4_DST);
4027 SCAN_FIELD_NESTED("ipv6_src=", struct in6_addr, in6_addr, OVS_TUNNEL_KEY_ATTR_IPV6_SRC);
4028 SCAN_FIELD_NESTED("ipv6_dst=", struct in6_addr, in6_addr, OVS_TUNNEL_KEY_ATTR_IPV6_DST);
4029 SCAN_FIELD_NESTED("tos=", uint8_t, u8, OVS_TUNNEL_KEY_ATTR_TOS);
4030 SCAN_FIELD_NESTED("ttl=", uint8_t, u8, OVS_TUNNEL_KEY_ATTR_TTL);
4031 SCAN_FIELD_NESTED("tp_src=", ovs_be16, be16, OVS_TUNNEL_KEY_ATTR_TP_SRC);
4032 SCAN_FIELD_NESTED("tp_dst=", ovs_be16, be16, OVS_TUNNEL_KEY_ATTR_TP_DST);
4033 SCAN_FIELD_NESTED_FUNC("vxlan(gbp(", uint32_t, vxlan_gbp, vxlan_gbp_to_attr);
4034 SCAN_FIELD_NESTED_FUNC("geneve(", struct geneve_scan, geneve,
4035 geneve_to_attr);
4036 SCAN_FIELD_NESTED_FUNC("flags(", uint16_t, tun_flags, tun_flags_to_attr);
4037 } SCAN_END_NESTED();
4038
4039 SCAN_SINGLE_PORT("in_port(", uint32_t, OVS_KEY_ATTR_IN_PORT);
4040
4041 SCAN_BEGIN("eth(", struct ovs_key_ethernet) {
4042 SCAN_FIELD("src=", eth, eth_src);
4043 SCAN_FIELD("dst=", eth, eth_dst);
4044 } SCAN_END(OVS_KEY_ATTR_ETHERNET);
4045
4046 SCAN_BEGIN_INIT("vlan(", struct ovs_key_vlan__,
4047 { htons(VLAN_CFI) }, { htons(VLAN_CFI) }) {
4048 SCAN_FIELD("vid=", vid, tci);
4049 SCAN_FIELD("pcp=", pcp, tci);
4050 SCAN_FIELD("cfi=", cfi, tci);
4051 } SCAN_END(OVS_KEY_ATTR_VLAN);
4052
4053 SCAN_SINGLE("eth_type(", ovs_be16, be16, OVS_KEY_ATTR_ETHERTYPE);
4054
4055 SCAN_BEGIN_ARRAY("mpls(", struct ovs_key_mpls, 3) {
4056 SCAN_FIELD_ARRAY("label=", mpls_label, mpls_lse);
4057 SCAN_FIELD_ARRAY("tc=", mpls_tc, mpls_lse);
4058 SCAN_FIELD_ARRAY("ttl=", mpls_ttl, mpls_lse);
4059 SCAN_FIELD_ARRAY("bos=", mpls_bos, mpls_lse);
4060 } SCAN_END_ARRAY(OVS_KEY_ATTR_MPLS);
4061
4062 SCAN_BEGIN("ipv4(", struct ovs_key_ipv4) {
4063 SCAN_FIELD("src=", ipv4, ipv4_src);
4064 SCAN_FIELD("dst=", ipv4, ipv4_dst);
4065 SCAN_FIELD("proto=", u8, ipv4_proto);
4066 SCAN_FIELD("tos=", u8, ipv4_tos);
4067 SCAN_FIELD("ttl=", u8, ipv4_ttl);
4068 SCAN_FIELD("frag=", frag, ipv4_frag);
4069 } SCAN_END(OVS_KEY_ATTR_IPV4);
4070
4071 SCAN_BEGIN("ipv6(", struct ovs_key_ipv6) {
4072 SCAN_FIELD("src=", ipv6, ipv6_src);
4073 SCAN_FIELD("dst=", ipv6, ipv6_dst);
4074 SCAN_FIELD("label=", ipv6_label, ipv6_label);
4075 SCAN_FIELD("proto=", u8, ipv6_proto);
4076 SCAN_FIELD("tclass=", u8, ipv6_tclass);
4077 SCAN_FIELD("hlimit=", u8, ipv6_hlimit);
4078 SCAN_FIELD("frag=", frag, ipv6_frag);
4079 } SCAN_END(OVS_KEY_ATTR_IPV6);
4080
4081 SCAN_BEGIN("tcp(", struct ovs_key_tcp) {
4082 SCAN_FIELD("src=", be16, tcp_src);
4083 SCAN_FIELD("dst=", be16, tcp_dst);
4084 } SCAN_END(OVS_KEY_ATTR_TCP);
4085
4086 SCAN_SINGLE("tcp_flags(", ovs_be16, tcp_flags, OVS_KEY_ATTR_TCP_FLAGS);
4087
4088 SCAN_BEGIN("udp(", struct ovs_key_udp) {
4089 SCAN_FIELD("src=", be16, udp_src);
4090 SCAN_FIELD("dst=", be16, udp_dst);
4091 } SCAN_END(OVS_KEY_ATTR_UDP);
4092
4093 SCAN_BEGIN("sctp(", struct ovs_key_sctp) {
4094 SCAN_FIELD("src=", be16, sctp_src);
4095 SCAN_FIELD("dst=", be16, sctp_dst);
4096 } SCAN_END(OVS_KEY_ATTR_SCTP);
4097
4098 SCAN_BEGIN("icmp(", struct ovs_key_icmp) {
4099 SCAN_FIELD("type=", u8, icmp_type);
4100 SCAN_FIELD("code=", u8, icmp_code);
4101 } SCAN_END(OVS_KEY_ATTR_ICMP);
4102
4103 SCAN_BEGIN("icmpv6(", struct ovs_key_icmpv6) {
4104 SCAN_FIELD("type=", u8, icmpv6_type);
4105 SCAN_FIELD("code=", u8, icmpv6_code);
4106 } SCAN_END(OVS_KEY_ATTR_ICMPV6);
4107
4108 SCAN_BEGIN("arp(", struct ovs_key_arp) {
4109 SCAN_FIELD("sip=", ipv4, arp_sip);
4110 SCAN_FIELD("tip=", ipv4, arp_tip);
4111 SCAN_FIELD("op=", be16, arp_op);
4112 SCAN_FIELD("sha=", eth, arp_sha);
4113 SCAN_FIELD("tha=", eth, arp_tha);
4114 } SCAN_END(OVS_KEY_ATTR_ARP);
4115
4116 SCAN_BEGIN("nd(", struct ovs_key_nd) {
4117 SCAN_FIELD("target=", ipv6, nd_target);
4118 SCAN_FIELD("sll=", eth, nd_sll);
4119 SCAN_FIELD("tll=", eth, nd_tll);
4120 } SCAN_END(OVS_KEY_ATTR_ND);
4121
4122 /* Encap open-coded. */
4123 if (!strncmp(s, "encap(", 6)) {
4124 const char *start = s;
4125 size_t encap, encap_mask = 0;
4126
4127 encap = nl_msg_start_nested(key, OVS_KEY_ATTR_ENCAP);
4128 if (mask) {
4129 encap_mask = nl_msg_start_nested(mask, OVS_KEY_ATTR_ENCAP);
4130 }
4131
4132 s += 6;
4133 for (;;) {
4134 int retval;
4135
4136 s += strspn(s, delimiters);
4137 if (!*s) {
4138 return -EINVAL;
4139 } else if (*s == ')') {
4140 break;
4141 }
4142
4143 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
4144 if (retval < 0) {
4145 return retval;
4146 }
4147 s += retval;
4148 }
4149 s++;
4150
4151 nl_msg_end_nested(key, encap);
4152 if (mask) {
4153 nl_msg_end_nested(mask, encap_mask);
4154 }
4155
4156 return s - start;
4157 }
4158
4159 return -EINVAL;
4160 }
4161
4162 /* Parses the string representation of a datapath flow key, in the
4163 * format output by odp_flow_key_format(). Returns 0 if successful,
4164 * otherwise a positive errno value. On success, the flow key is
4165 * appended to 'key' as a series of Netlink attributes. On failure, no
4166 * data is appended to 'key'. Either way, 'key''s data might be
4167 * reallocated.
4168 *
4169 * If 'port_names' is nonnull, it points to an simap that maps from a port name
4170 * to a port number. (Port names may be used instead of port numbers in
4171 * in_port.)
4172 *
4173 * On success, the attributes appended to 'key' are individually syntactically
4174 * valid, but they may not be valid as a sequence. 'key' might, for example,
4175 * have duplicated keys. odp_flow_key_to_flow() will detect those errors. */
4176 int
4177 odp_flow_from_string(const char *s, const struct simap *port_names,
4178 struct ofpbuf *key, struct ofpbuf *mask)
4179 {
4180 const size_t old_size = key->size;
4181 for (;;) {
4182 int retval;
4183
4184 s += strspn(s, delimiters);
4185 if (!*s) {
4186 return 0;
4187 }
4188
4189 retval = parse_odp_key_mask_attr(s, port_names, key, mask);
4190 if (retval < 0) {
4191 key->size = old_size;
4192 return -retval;
4193 }
4194 s += retval;
4195 }
4196
4197 return 0;
4198 }
4199
4200 static uint8_t
4201 ovs_to_odp_frag(uint8_t nw_frag, bool is_mask)
4202 {
4203 if (is_mask) {
4204 /* Netlink interface 'enum ovs_frag_type' is an 8-bit enumeration type,
4205 * not a set of flags or bitfields. Hence, if the struct flow nw_frag
4206 * mask, which is a set of bits, has the FLOW_NW_FRAG_ANY as zero, we
4207 * must use a zero mask for the netlink frag field, and all ones mask
4208 * otherwise. */
4209 return (nw_frag & FLOW_NW_FRAG_ANY) ? UINT8_MAX : 0;
4210 }
4211 return !(nw_frag & FLOW_NW_FRAG_ANY) ? OVS_FRAG_TYPE_NONE
4212 : nw_frag & FLOW_NW_FRAG_LATER ? OVS_FRAG_TYPE_LATER
4213 : OVS_FRAG_TYPE_FIRST;
4214 }
4215
4216 static void get_ethernet_key(const struct flow *, struct ovs_key_ethernet *);
4217 static void put_ethernet_key(const struct ovs_key_ethernet *, struct flow *);
4218 static void get_ipv4_key(const struct flow *, struct ovs_key_ipv4 *,
4219 bool is_mask);
4220 static void put_ipv4_key(const struct ovs_key_ipv4 *, struct flow *,
4221 bool is_mask);
4222 static void get_ipv6_key(const struct flow *, struct ovs_key_ipv6 *,
4223 bool is_mask);
4224 static void put_ipv6_key(const struct ovs_key_ipv6 *, struct flow *,
4225 bool is_mask);
4226 static void get_arp_key(const struct flow *, struct ovs_key_arp *);
4227 static void put_arp_key(const struct ovs_key_arp *, struct flow *);
4228 static void get_nd_key(const struct flow *, struct ovs_key_nd *);
4229 static void put_nd_key(const struct ovs_key_nd *, struct flow *);
4230
4231 /* These share the same layout. */
4232 union ovs_key_tp {
4233 struct ovs_key_tcp tcp;
4234 struct ovs_key_udp udp;
4235 struct ovs_key_sctp sctp;
4236 };
4237
4238 static void get_tp_key(const struct flow *, union ovs_key_tp *);
4239 static void put_tp_key(const union ovs_key_tp *, struct flow *);
4240
4241 static void
4242 odp_flow_key_from_flow__(const struct odp_flow_key_parms *parms,
4243 bool export_mask, struct ofpbuf *buf)
4244 {
4245 struct ovs_key_ethernet *eth_key;
4246 size_t encap;
4247 const struct flow *flow = parms->flow;
4248 const struct flow *data = export_mask ? parms->mask : parms->flow;
4249
4250 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, data->skb_priority);
4251
4252 if (flow_tnl_dst_is_set(&flow->tunnel) || export_mask) {
4253 tun_key_to_attr(buf, &data->tunnel, &parms->flow->tunnel,
4254 parms->key_buf);
4255 }
4256
4257 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, data->pkt_mark);
4258
4259 if (parms->support.ct_state) {
4260 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_STATE,
4261 ovs_to_odp_ct_state(data->ct_state));
4262 }
4263 if (parms->support.ct_zone) {
4264 nl_msg_put_u16(buf, OVS_KEY_ATTR_CT_ZONE, data->ct_zone);
4265 }
4266 if (parms->support.ct_mark) {
4267 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_MARK, data->ct_mark);
4268 }
4269 if (parms->support.ct_label) {
4270 nl_msg_put_unspec(buf, OVS_KEY_ATTR_CT_LABELS, &data->ct_label,
4271 sizeof(data->ct_label));
4272 }
4273 if (parms->support.recirc) {
4274 nl_msg_put_u32(buf, OVS_KEY_ATTR_RECIRC_ID, data->recirc_id);
4275 nl_msg_put_u32(buf, OVS_KEY_ATTR_DP_HASH, data->dp_hash);
4276 }
4277
4278 /* Add an ingress port attribute if this is a mask or 'odp_in_port'
4279 * is not the magical value "ODPP_NONE". */
4280 if (export_mask || parms->odp_in_port != ODPP_NONE) {
4281 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, parms->odp_in_port);
4282 }
4283
4284 eth_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ETHERNET,
4285 sizeof *eth_key);
4286 get_ethernet_key(data, eth_key);
4287
4288 if (flow->vlan_tci != htons(0) || flow->dl_type == htons(ETH_TYPE_VLAN)) {
4289 if (export_mask) {
4290 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
4291 } else {
4292 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, htons(ETH_TYPE_VLAN));
4293 }
4294 nl_msg_put_be16(buf, OVS_KEY_ATTR_VLAN, data->vlan_tci);
4295 encap = nl_msg_start_nested(buf, OVS_KEY_ATTR_ENCAP);
4296 if (flow->vlan_tci == htons(0)) {
4297 goto unencap;
4298 }
4299 } else {
4300 encap = 0;
4301 }
4302
4303 if (ntohs(flow->dl_type) < ETH_TYPE_MIN) {
4304 /* For backwards compatibility with kernels that don't support
4305 * wildcarding, the following convention is used to encode the
4306 * OVS_KEY_ATTR_ETHERTYPE for key and mask:
4307 *
4308 * key mask matches
4309 * -------- -------- -------
4310 * >0x5ff 0xffff Specified Ethernet II Ethertype.
4311 * >0x5ff 0 Any Ethernet II or non-Ethernet II frame.
4312 * <none> 0xffff Any non-Ethernet II frame (except valid
4313 * 802.3 SNAP packet with valid eth_type).
4314 */
4315 if (export_mask) {
4316 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, OVS_BE16_MAX);
4317 }
4318 goto unencap;
4319 }
4320
4321 nl_msg_put_be16(buf, OVS_KEY_ATTR_ETHERTYPE, data->dl_type);
4322
4323 if (flow->dl_type == htons(ETH_TYPE_IP)) {
4324 struct ovs_key_ipv4 *ipv4_key;
4325
4326 ipv4_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV4,
4327 sizeof *ipv4_key);
4328 get_ipv4_key(data, ipv4_key, export_mask);
4329 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
4330 struct ovs_key_ipv6 *ipv6_key;
4331
4332 ipv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_IPV6,
4333 sizeof *ipv6_key);
4334 get_ipv6_key(data, ipv6_key, export_mask);
4335 } else if (flow->dl_type == htons(ETH_TYPE_ARP) ||
4336 flow->dl_type == htons(ETH_TYPE_RARP)) {
4337 struct ovs_key_arp *arp_key;
4338
4339 arp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ARP,
4340 sizeof *arp_key);
4341 get_arp_key(data, arp_key);
4342 } else if (eth_type_mpls(flow->dl_type)) {
4343 struct ovs_key_mpls *mpls_key;
4344 int i, n;
4345
4346 n = flow_count_mpls_labels(flow, NULL);
4347 if (export_mask) {
4348 n = MIN(n, parms->support.max_mpls_depth);
4349 }
4350 mpls_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_MPLS,
4351 n * sizeof *mpls_key);
4352 for (i = 0; i < n; i++) {
4353 mpls_key[i].mpls_lse = data->mpls_lse[i];
4354 }
4355 }
4356
4357 if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4358 if (flow->nw_proto == IPPROTO_TCP) {
4359 union ovs_key_tp *tcp_key;
4360
4361 tcp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_TCP,
4362 sizeof *tcp_key);
4363 get_tp_key(data, tcp_key);
4364 if (data->tcp_flags) {
4365 nl_msg_put_be16(buf, OVS_KEY_ATTR_TCP_FLAGS, data->tcp_flags);
4366 }
4367 } else if (flow->nw_proto == IPPROTO_UDP) {
4368 union ovs_key_tp *udp_key;
4369
4370 udp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_UDP,
4371 sizeof *udp_key);
4372 get_tp_key(data, udp_key);
4373 } else if (flow->nw_proto == IPPROTO_SCTP) {
4374 union ovs_key_tp *sctp_key;
4375
4376 sctp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_SCTP,
4377 sizeof *sctp_key);
4378 get_tp_key(data, sctp_key);
4379 } else if (flow->dl_type == htons(ETH_TYPE_IP)
4380 && flow->nw_proto == IPPROTO_ICMP) {
4381 struct ovs_key_icmp *icmp_key;
4382
4383 icmp_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMP,
4384 sizeof *icmp_key);
4385 icmp_key->icmp_type = ntohs(data->tp_src);
4386 icmp_key->icmp_code = ntohs(data->tp_dst);
4387 } else if (flow->dl_type == htons(ETH_TYPE_IPV6)
4388 && flow->nw_proto == IPPROTO_ICMPV6) {
4389 struct ovs_key_icmpv6 *icmpv6_key;
4390
4391 icmpv6_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ICMPV6,
4392 sizeof *icmpv6_key);
4393 icmpv6_key->icmpv6_type = ntohs(data->tp_src);
4394 icmpv6_key->icmpv6_code = ntohs(data->tp_dst);
4395
4396 if (flow->tp_dst == htons(0)
4397 && (flow->tp_src == htons(ND_NEIGHBOR_SOLICIT)
4398 || flow->tp_src == htons(ND_NEIGHBOR_ADVERT))
4399 /* Even though 'tp_src' and 'tp_dst' are 16 bits wide, ICMP
4400 * type and code are 8 bits wide. Therefore, an exact match
4401 * looks like htons(0xff), not htons(0xffff). See
4402 * xlate_wc_finish() for details. */
4403 && (!export_mask || (data->tp_src == htons(0xff)
4404 && data->tp_dst == htons(0xff)))) {
4405
4406 struct ovs_key_nd *nd_key;
4407
4408 nd_key = nl_msg_put_unspec_uninit(buf, OVS_KEY_ATTR_ND,
4409 sizeof *nd_key);
4410 memcpy(nd_key->nd_target, &data->nd_target,
4411 sizeof nd_key->nd_target);
4412 nd_key->nd_sll = data->arp_sha;
4413 nd_key->nd_tll = data->arp_tha;
4414 }
4415 }
4416 }
4417
4418 unencap:
4419 if (encap) {
4420 nl_msg_end_nested(buf, encap);
4421 }
4422 }
4423
4424 /* Appends a representation of 'flow' as OVS_KEY_ATTR_* attributes to 'buf'.
4425 *
4426 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
4427 * capable of being expanded to allow for that much space. */
4428 void
4429 odp_flow_key_from_flow(const struct odp_flow_key_parms *parms,
4430 struct ofpbuf *buf)
4431 {
4432 odp_flow_key_from_flow__(parms, false, buf);
4433 }
4434
4435 /* Appends a representation of 'mask' as OVS_KEY_ATTR_* attributes to
4436 * 'buf'.
4437 *
4438 * 'buf' must have at least ODPUTIL_FLOW_KEY_BYTES bytes of space, or be
4439 * capable of being expanded to allow for that much space. */
4440 void
4441 odp_flow_key_from_mask(const struct odp_flow_key_parms *parms,
4442 struct ofpbuf *buf)
4443 {
4444 odp_flow_key_from_flow__(parms, true, buf);
4445 }
4446
4447 /* Generate ODP flow key from the given packet metadata */
4448 void
4449 odp_key_from_pkt_metadata(struct ofpbuf *buf, const struct pkt_metadata *md)
4450 {
4451 nl_msg_put_u32(buf, OVS_KEY_ATTR_PRIORITY, md->skb_priority);
4452
4453 if (flow_tnl_dst_is_set(&md->tunnel)) {
4454 tun_key_to_attr(buf, &md->tunnel, &md->tunnel, NULL);
4455 }
4456
4457 nl_msg_put_u32(buf, OVS_KEY_ATTR_SKB_MARK, md->pkt_mark);
4458
4459 if (md->ct_state) {
4460 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_STATE,
4461 ovs_to_odp_ct_state(md->ct_state));
4462 if (md->ct_zone) {
4463 nl_msg_put_u16(buf, OVS_KEY_ATTR_CT_ZONE, md->ct_zone);
4464 }
4465 if (md->ct_mark) {
4466 nl_msg_put_u32(buf, OVS_KEY_ATTR_CT_MARK, md->ct_mark);
4467 }
4468 if (!ovs_u128_is_zero(&md->ct_label)) {
4469 nl_msg_put_unspec(buf, OVS_KEY_ATTR_CT_LABELS, &md->ct_label,
4470 sizeof(md->ct_label));
4471 }
4472 }
4473
4474 /* Add an ingress port attribute if 'odp_in_port' is not the magical
4475 * value "ODPP_NONE". */
4476 if (md->in_port.odp_port != ODPP_NONE) {
4477 nl_msg_put_odp_port(buf, OVS_KEY_ATTR_IN_PORT, md->in_port.odp_port);
4478 }
4479 }
4480
4481 /* Generate packet metadata from the given ODP flow key. */
4482 void
4483 odp_key_to_pkt_metadata(const struct nlattr *key, size_t key_len,
4484 struct pkt_metadata *md)
4485 {
4486 const struct nlattr *nla;
4487 size_t left;
4488 uint32_t wanted_attrs = 1u << OVS_KEY_ATTR_PRIORITY |
4489 1u << OVS_KEY_ATTR_SKB_MARK | 1u << OVS_KEY_ATTR_TUNNEL |
4490 1u << OVS_KEY_ATTR_IN_PORT;
4491
4492 pkt_metadata_init(md, ODPP_NONE);
4493
4494 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
4495 uint16_t type = nl_attr_type(nla);
4496 size_t len = nl_attr_get_size(nla);
4497 int expected_len = odp_key_attr_len(ovs_flow_key_attr_lens,
4498 OVS_KEY_ATTR_MAX, type);
4499
4500 if (len != expected_len && expected_len >= 0) {
4501 continue;
4502 }
4503
4504 switch (type) {
4505 case OVS_KEY_ATTR_RECIRC_ID:
4506 md->recirc_id = nl_attr_get_u32(nla);
4507 wanted_attrs &= ~(1u << OVS_KEY_ATTR_RECIRC_ID);
4508 break;
4509 case OVS_KEY_ATTR_DP_HASH:
4510 md->dp_hash = nl_attr_get_u32(nla);
4511 wanted_attrs &= ~(1u << OVS_KEY_ATTR_DP_HASH);
4512 break;
4513 case OVS_KEY_ATTR_PRIORITY:
4514 md->skb_priority = nl_attr_get_u32(nla);
4515 wanted_attrs &= ~(1u << OVS_KEY_ATTR_PRIORITY);
4516 break;
4517 case OVS_KEY_ATTR_SKB_MARK:
4518 md->pkt_mark = nl_attr_get_u32(nla);
4519 wanted_attrs &= ~(1u << OVS_KEY_ATTR_SKB_MARK);
4520 break;
4521 case OVS_KEY_ATTR_CT_STATE:
4522 md->ct_state = odp_to_ovs_ct_state(nl_attr_get_u32(nla));
4523 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_STATE);
4524 break;
4525 case OVS_KEY_ATTR_CT_ZONE:
4526 md->ct_zone = nl_attr_get_u16(nla);
4527 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_ZONE);
4528 break;
4529 case OVS_KEY_ATTR_CT_MARK:
4530 md->ct_mark = nl_attr_get_u32(nla);
4531 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_MARK);
4532 break;
4533 case OVS_KEY_ATTR_CT_LABELS: {
4534 const ovs_u128 *cl = nl_attr_get(nla);
4535
4536 md->ct_label = *cl;
4537 wanted_attrs &= ~(1u << OVS_KEY_ATTR_CT_LABELS);
4538 break;
4539 }
4540 case OVS_KEY_ATTR_TUNNEL: {
4541 enum odp_key_fitness res;
4542
4543 res = odp_tun_key_from_attr(nla, true, &md->tunnel);
4544 if (res == ODP_FIT_ERROR) {
4545 memset(&md->tunnel, 0, sizeof md->tunnel);
4546 } else if (res == ODP_FIT_PERFECT) {
4547 wanted_attrs &= ~(1u << OVS_KEY_ATTR_TUNNEL);
4548 }
4549 break;
4550 }
4551 case OVS_KEY_ATTR_IN_PORT:
4552 md->in_port.odp_port = nl_attr_get_odp_port(nla);
4553 wanted_attrs &= ~(1u << OVS_KEY_ATTR_IN_PORT);
4554 break;
4555 default:
4556 break;
4557 }
4558
4559 if (!wanted_attrs) {
4560 return; /* Have everything. */
4561 }
4562 }
4563 }
4564
4565 uint32_t
4566 odp_flow_key_hash(const struct nlattr *key, size_t key_len)
4567 {
4568 BUILD_ASSERT_DECL(!(NLA_ALIGNTO % sizeof(uint32_t)));
4569 return hash_bytes32(ALIGNED_CAST(const uint32_t *, key), key_len, 0);
4570 }
4571
4572 static void
4573 log_odp_key_attributes(struct vlog_rate_limit *rl, const char *title,
4574 uint64_t attrs, int out_of_range_attr,
4575 const struct nlattr *key, size_t key_len)
4576 {
4577 struct ds s;
4578 int i;
4579
4580 if (VLOG_DROP_DBG(rl)) {
4581 return;
4582 }
4583
4584 ds_init(&s);
4585 for (i = 0; i < 64; i++) {
4586 if (attrs & (UINT64_C(1) << i)) {
4587 char namebuf[OVS_KEY_ATTR_BUFSIZE];
4588
4589 ds_put_format(&s, " %s",
4590 ovs_key_attr_to_string(i, namebuf, sizeof namebuf));
4591 }
4592 }
4593 if (out_of_range_attr) {
4594 ds_put_format(&s, " %d (and possibly others)", out_of_range_attr);
4595 }
4596
4597 ds_put_cstr(&s, ": ");
4598 odp_flow_key_format(key, key_len, &s);
4599
4600 VLOG_DBG("%s:%s", title, ds_cstr(&s));
4601 ds_destroy(&s);
4602 }
4603
4604 static uint8_t
4605 odp_to_ovs_frag(uint8_t odp_frag, bool is_mask)
4606 {
4607 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4608
4609 if (is_mask) {
4610 return odp_frag ? FLOW_NW_FRAG_MASK : 0;
4611 }
4612
4613 if (odp_frag > OVS_FRAG_TYPE_LATER) {
4614 VLOG_ERR_RL(&rl, "invalid frag %"PRIu8" in flow key", odp_frag);
4615 return 0xff; /* Error. */
4616 }
4617
4618 return (odp_frag == OVS_FRAG_TYPE_NONE) ? 0
4619 : (odp_frag == OVS_FRAG_TYPE_FIRST) ? FLOW_NW_FRAG_ANY
4620 : FLOW_NW_FRAG_ANY | FLOW_NW_FRAG_LATER;
4621 }
4622
4623 static bool
4624 parse_flow_nlattrs(const struct nlattr *key, size_t key_len,
4625 const struct nlattr *attrs[], uint64_t *present_attrsp,
4626 int *out_of_range_attrp)
4627 {
4628 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
4629 const struct nlattr *nla;
4630 uint64_t present_attrs;
4631 size_t left;
4632
4633 BUILD_ASSERT(OVS_KEY_ATTR_MAX < CHAR_BIT * sizeof present_attrs);
4634 present_attrs = 0;
4635 *out_of_range_attrp = 0;
4636 NL_ATTR_FOR_EACH (nla, left, key, key_len) {
4637 uint16_t type = nl_attr_type(nla);
4638 size_t len = nl_attr_get_size(nla);
4639 int expected_len = odp_key_attr_len(ovs_flow_key_attr_lens,
4640 OVS_KEY_ATTR_MAX, type);
4641
4642 if (len != expected_len && expected_len >= 0) {
4643 char namebuf[OVS_KEY_ATTR_BUFSIZE];
4644
4645 VLOG_ERR_RL(&rl, "attribute %s has length %"PRIuSIZE" but should have "
4646 "length %d", ovs_key_attr_to_string(type, namebuf,
4647 sizeof namebuf),
4648 len, expected_len);
4649 return false;
4650 }
4651
4652 if (type > OVS_KEY_ATTR_MAX) {
4653 *out_of_range_attrp = type;
4654 } else {
4655 if (present_attrs & (UINT64_C(1) << type)) {
4656 char namebuf[OVS_KEY_ATTR_BUFSIZE];
4657
4658 VLOG_ERR_RL(&rl, "duplicate %s attribute in flow key",
4659 ovs_key_attr_to_string(type,
4660 namebuf, sizeof namebuf));
4661 return false;
4662 }
4663
4664 present_attrs |= UINT64_C(1) << type;
4665 attrs[type] = nla;
4666 }
4667 }
4668 if (left) {
4669 VLOG_ERR_RL(&rl, "trailing garbage in flow key");
4670 return false;
4671 }
4672
4673 *present_attrsp = present_attrs;
4674 return true;
4675 }
4676
4677 static enum odp_key_fitness
4678 check_expectations(uint64_t present_attrs, int out_of_range_attr,
4679 uint64_t expected_attrs,
4680 const struct nlattr *key, size_t key_len)
4681 {
4682 uint64_t missing_attrs;
4683 uint64_t extra_attrs;
4684
4685 missing_attrs = expected_attrs & ~present_attrs;
4686 if (missing_attrs) {
4687 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
4688 log_odp_key_attributes(&rl, "expected but not present",
4689 missing_attrs, 0, key, key_len);
4690 return ODP_FIT_TOO_LITTLE;
4691 }
4692
4693 extra_attrs = present_attrs & ~expected_attrs;
4694 if (extra_attrs || out_of_range_attr) {
4695 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 10);
4696 log_odp_key_attributes(&rl, "present but not expected",
4697 extra_attrs, out_of_range_attr, key, key_len);
4698 return ODP_FIT_TOO_MUCH;
4699 }
4700
4701 return ODP_FIT_PERFECT;
4702 }
4703
4704 static bool
4705 parse_ethertype(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
4706 uint64_t present_attrs, uint64_t *expected_attrs,
4707 struct flow *flow, const struct flow *src_flow)
4708 {
4709 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4710 bool is_mask = flow != src_flow;
4711
4712 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE)) {
4713 flow->dl_type = nl_attr_get_be16(attrs[OVS_KEY_ATTR_ETHERTYPE]);
4714 if (!is_mask && ntohs(flow->dl_type) < ETH_TYPE_MIN) {
4715 VLOG_ERR_RL(&rl, "invalid Ethertype %"PRIu16" in flow key",
4716 ntohs(flow->dl_type));
4717 return false;
4718 }
4719 if (is_mask && ntohs(src_flow->dl_type) < ETH_TYPE_MIN &&
4720 flow->dl_type != htons(0xffff)) {
4721 return false;
4722 }
4723 *expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERTYPE;
4724 } else {
4725 if (!is_mask) {
4726 flow->dl_type = htons(FLOW_DL_TYPE_NONE);
4727 } else if (ntohs(src_flow->dl_type) < ETH_TYPE_MIN) {
4728 /* See comments in odp_flow_key_from_flow__(). */
4729 VLOG_ERR_RL(&rl, "mask expected for non-Ethernet II frame");
4730 return false;
4731 }
4732 }
4733 return true;
4734 }
4735
4736 static enum odp_key_fitness
4737 parse_l2_5_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
4738 uint64_t present_attrs, int out_of_range_attr,
4739 uint64_t expected_attrs, struct flow *flow,
4740 const struct nlattr *key, size_t key_len,
4741 const struct flow *src_flow)
4742 {
4743 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4744 bool is_mask = src_flow != flow;
4745 const void *check_start = NULL;
4746 size_t check_len = 0;
4747 enum ovs_key_attr expected_bit = 0xff;
4748
4749 if (eth_type_mpls(src_flow->dl_type)) {
4750 if (!is_mask || present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
4751 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_MPLS);
4752 }
4753 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_MPLS)) {
4754 size_t size = nl_attr_get_size(attrs[OVS_KEY_ATTR_MPLS]);
4755 const ovs_be32 *mpls_lse = nl_attr_get(attrs[OVS_KEY_ATTR_MPLS]);
4756 int n = size / sizeof(ovs_be32);
4757 int i;
4758
4759 if (!size || size % sizeof(ovs_be32)) {
4760 return ODP_FIT_ERROR;
4761 }
4762 if (flow->mpls_lse[0] && flow->dl_type != htons(0xffff)) {
4763 return ODP_FIT_ERROR;
4764 }
4765
4766 for (i = 0; i < n && i < FLOW_MAX_MPLS_LABELS; i++) {
4767 flow->mpls_lse[i] = mpls_lse[i];
4768 }
4769 if (n > FLOW_MAX_MPLS_LABELS) {
4770 return ODP_FIT_TOO_MUCH;
4771 }
4772
4773 if (!is_mask) {
4774 /* BOS may be set only in the innermost label. */
4775 for (i = 0; i < n - 1; i++) {
4776 if (flow->mpls_lse[i] & htonl(MPLS_BOS_MASK)) {
4777 return ODP_FIT_ERROR;
4778 }
4779 }
4780
4781 /* BOS must be set in the innermost label. */
4782 if (n < FLOW_MAX_MPLS_LABELS
4783 && !(flow->mpls_lse[n - 1] & htonl(MPLS_BOS_MASK))) {
4784 return ODP_FIT_TOO_LITTLE;
4785 }
4786 }
4787 }
4788
4789 goto done;
4790 } else if (src_flow->dl_type == htons(ETH_TYPE_IP)) {
4791 if (!is_mask) {
4792 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV4;
4793 }
4794 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV4)) {
4795 const struct ovs_key_ipv4 *ipv4_key;
4796
4797 ipv4_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV4]);
4798 put_ipv4_key(ipv4_key, flow, is_mask);
4799 if (flow->nw_frag > FLOW_NW_FRAG_MASK) {
4800 return ODP_FIT_ERROR;
4801 }
4802 if (is_mask) {
4803 check_start = ipv4_key;
4804 check_len = sizeof *ipv4_key;
4805 expected_bit = OVS_KEY_ATTR_IPV4;
4806 }
4807 }
4808 } else if (src_flow->dl_type == htons(ETH_TYPE_IPV6)) {
4809 if (!is_mask) {
4810 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IPV6;
4811 }
4812 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IPV6)) {
4813 const struct ovs_key_ipv6 *ipv6_key;
4814
4815 ipv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_IPV6]);
4816 put_ipv6_key(ipv6_key, flow, is_mask);
4817 if (flow->nw_frag > FLOW_NW_FRAG_MASK) {
4818 return ODP_FIT_ERROR;
4819 }
4820 if (is_mask) {
4821 check_start = ipv6_key;
4822 check_len = sizeof *ipv6_key;
4823 expected_bit = OVS_KEY_ATTR_IPV6;
4824 }
4825 }
4826 } else if (src_flow->dl_type == htons(ETH_TYPE_ARP) ||
4827 src_flow->dl_type == htons(ETH_TYPE_RARP)) {
4828 if (!is_mask) {
4829 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ARP;
4830 }
4831 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ARP)) {
4832 const struct ovs_key_arp *arp_key;
4833
4834 arp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ARP]);
4835 if (!is_mask && (arp_key->arp_op & htons(0xff00))) {
4836 VLOG_ERR_RL(&rl, "unsupported ARP opcode %"PRIu16" in flow "
4837 "key", ntohs(arp_key->arp_op));
4838 return ODP_FIT_ERROR;
4839 }
4840 put_arp_key(arp_key, flow);
4841 if (is_mask) {
4842 check_start = arp_key;
4843 check_len = sizeof *arp_key;
4844 expected_bit = OVS_KEY_ATTR_ARP;
4845 }
4846 }
4847 } else {
4848 goto done;
4849 }
4850 if (check_len > 0) { /* Happens only when 'is_mask'. */
4851 if (!is_all_zeros(check_start, check_len) &&
4852 flow->dl_type != htons(0xffff)) {
4853 return ODP_FIT_ERROR;
4854 } else {
4855 expected_attrs |= UINT64_C(1) << expected_bit;
4856 }
4857 }
4858
4859 expected_bit = OVS_KEY_ATTR_UNSPEC;
4860 if (src_flow->nw_proto == IPPROTO_TCP
4861 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
4862 src_flow->dl_type == htons(ETH_TYPE_IPV6))
4863 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4864 if (!is_mask) {
4865 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP;
4866 }
4867 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP)) {
4868 const union ovs_key_tp *tcp_key;
4869
4870 tcp_key = nl_attr_get(attrs[OVS_KEY_ATTR_TCP]);
4871 put_tp_key(tcp_key, flow);
4872 expected_bit = OVS_KEY_ATTR_TCP;
4873 }
4874 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS)) {
4875 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TCP_FLAGS;
4876 flow->tcp_flags = nl_attr_get_be16(attrs[OVS_KEY_ATTR_TCP_FLAGS]);
4877 }
4878 } else if (src_flow->nw_proto == IPPROTO_UDP
4879 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
4880 src_flow->dl_type == htons(ETH_TYPE_IPV6))
4881 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4882 if (!is_mask) {
4883 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_UDP;
4884 }
4885 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_UDP)) {
4886 const union ovs_key_tp *udp_key;
4887
4888 udp_key = nl_attr_get(attrs[OVS_KEY_ATTR_UDP]);
4889 put_tp_key(udp_key, flow);
4890 expected_bit = OVS_KEY_ATTR_UDP;
4891 }
4892 } else if (src_flow->nw_proto == IPPROTO_SCTP
4893 && (src_flow->dl_type == htons(ETH_TYPE_IP) ||
4894 src_flow->dl_type == htons(ETH_TYPE_IPV6))
4895 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4896 if (!is_mask) {
4897 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SCTP;
4898 }
4899 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SCTP)) {
4900 const union ovs_key_tp *sctp_key;
4901
4902 sctp_key = nl_attr_get(attrs[OVS_KEY_ATTR_SCTP]);
4903 put_tp_key(sctp_key, flow);
4904 expected_bit = OVS_KEY_ATTR_SCTP;
4905 }
4906 } else if (src_flow->nw_proto == IPPROTO_ICMP
4907 && src_flow->dl_type == htons(ETH_TYPE_IP)
4908 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4909 if (!is_mask) {
4910 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMP;
4911 }
4912 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMP)) {
4913 const struct ovs_key_icmp *icmp_key;
4914
4915 icmp_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMP]);
4916 flow->tp_src = htons(icmp_key->icmp_type);
4917 flow->tp_dst = htons(icmp_key->icmp_code);
4918 expected_bit = OVS_KEY_ATTR_ICMP;
4919 }
4920 } else if (src_flow->nw_proto == IPPROTO_ICMPV6
4921 && src_flow->dl_type == htons(ETH_TYPE_IPV6)
4922 && !(src_flow->nw_frag & FLOW_NW_FRAG_LATER)) {
4923 if (!is_mask) {
4924 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ICMPV6;
4925 }
4926 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ICMPV6)) {
4927 const struct ovs_key_icmpv6 *icmpv6_key;
4928
4929 icmpv6_key = nl_attr_get(attrs[OVS_KEY_ATTR_ICMPV6]);
4930 flow->tp_src = htons(icmpv6_key->icmpv6_type);
4931 flow->tp_dst = htons(icmpv6_key->icmpv6_code);
4932 expected_bit = OVS_KEY_ATTR_ICMPV6;
4933 if (src_flow->tp_dst == htons(0) &&
4934 (src_flow->tp_src == htons(ND_NEIGHBOR_SOLICIT) ||
4935 src_flow->tp_src == htons(ND_NEIGHBOR_ADVERT))) {
4936 if (!is_mask) {
4937 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
4938 }
4939 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ND)) {
4940 const struct ovs_key_nd *nd_key;
4941
4942 nd_key = nl_attr_get(attrs[OVS_KEY_ATTR_ND]);
4943 memcpy(&flow->nd_target, nd_key->nd_target,
4944 sizeof flow->nd_target);
4945 flow->arp_sha = nd_key->nd_sll;
4946 flow->arp_tha = nd_key->nd_tll;
4947 if (is_mask) {
4948 /* Even though 'tp_src' and 'tp_dst' are 16 bits wide,
4949 * ICMP type and code are 8 bits wide. Therefore, an
4950 * exact match looks like htons(0xff), not
4951 * htons(0xffff). See xlate_wc_finish() for details.
4952 * */
4953 if (!is_all_zeros(nd_key, sizeof *nd_key) &&
4954 (flow->tp_src != htons(0xff) ||
4955 flow->tp_dst != htons(0xff))) {
4956 return ODP_FIT_ERROR;
4957 } else {
4958 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ND;
4959 }
4960 }
4961 }
4962 }
4963 }
4964 }
4965 if (is_mask && expected_bit != OVS_KEY_ATTR_UNSPEC) {
4966 if ((flow->tp_src || flow->tp_dst) && flow->nw_proto != 0xff) {
4967 return ODP_FIT_ERROR;
4968 } else {
4969 expected_attrs |= UINT64_C(1) << expected_bit;
4970 }
4971 }
4972
4973 done:
4974 return check_expectations(present_attrs, out_of_range_attr, expected_attrs,
4975 key, key_len);
4976 }
4977
4978 /* Parse 802.1Q header then encapsulated L3 attributes. */
4979 static enum odp_key_fitness
4980 parse_8021q_onward(const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1],
4981 uint64_t present_attrs, int out_of_range_attr,
4982 uint64_t expected_attrs, struct flow *flow,
4983 const struct nlattr *key, size_t key_len,
4984 const struct flow *src_flow)
4985 {
4986 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
4987 bool is_mask = src_flow != flow;
4988
4989 const struct nlattr *encap
4990 = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)
4991 ? attrs[OVS_KEY_ATTR_ENCAP] : NULL);
4992 enum odp_key_fitness encap_fitness;
4993 enum odp_key_fitness fitness;
4994
4995 /* Calculate fitness of outer attributes. */
4996 if (!is_mask) {
4997 expected_attrs |= ((UINT64_C(1) << OVS_KEY_ATTR_VLAN) |
4998 (UINT64_C(1) << OVS_KEY_ATTR_ENCAP));
4999 } else {
5000 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
5001 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
5002 }
5003 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP)) {
5004 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_ENCAP);
5005 }
5006 }
5007 fitness = check_expectations(present_attrs, out_of_range_attr,
5008 expected_attrs, key, key_len);
5009
5010 /* Set vlan_tci.
5011 * Remove the TPID from dl_type since it's not the real Ethertype. */
5012 flow->dl_type = htons(0);
5013 flow->vlan_tci = (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)
5014 ? nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN])
5015 : htons(0));
5016 if (!is_mask) {
5017 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN))) {
5018 return ODP_FIT_TOO_LITTLE;
5019 } else if (flow->vlan_tci == htons(0)) {
5020 /* Corner case for a truncated 802.1Q header. */
5021 if (fitness == ODP_FIT_PERFECT && nl_attr_get_size(encap)) {
5022 return ODP_FIT_TOO_MUCH;
5023 }
5024 return fitness;
5025 } else if (!(flow->vlan_tci & htons(VLAN_CFI))) {
5026 VLOG_ERR_RL(&rl, "OVS_KEY_ATTR_VLAN 0x%04"PRIx16" is nonzero "
5027 "but CFI bit is not set", ntohs(flow->vlan_tci));
5028 return ODP_FIT_ERROR;
5029 }
5030 } else {
5031 if (!(present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ENCAP))) {
5032 return fitness;
5033 }
5034 }
5035
5036 /* Now parse the encapsulated attributes. */
5037 if (!parse_flow_nlattrs(nl_attr_get(encap), nl_attr_get_size(encap),
5038 attrs, &present_attrs, &out_of_range_attr)) {
5039 return ODP_FIT_ERROR;
5040 }
5041 expected_attrs = 0;
5042
5043 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow, src_flow)) {
5044 return ODP_FIT_ERROR;
5045 }
5046 encap_fitness = parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
5047 expected_attrs, flow, key, key_len,
5048 src_flow);
5049
5050 /* The overall fitness is the worse of the outer and inner attributes. */
5051 return MAX(fitness, encap_fitness);
5052 }
5053
5054 static enum odp_key_fitness
5055 odp_flow_key_to_flow__(const struct nlattr *key, size_t key_len,
5056 const struct nlattr *src_key, size_t src_key_len,
5057 struct flow *flow, const struct flow *src_flow,
5058 bool udpif)
5059 {
5060 const struct nlattr *attrs[OVS_KEY_ATTR_MAX + 1];
5061 uint64_t expected_attrs;
5062 uint64_t present_attrs;
5063 int out_of_range_attr;
5064 bool is_mask = src_flow != flow;
5065
5066 memset(flow, 0, sizeof *flow);
5067
5068 /* Parse attributes. */
5069 if (!parse_flow_nlattrs(key, key_len, attrs, &present_attrs,
5070 &out_of_range_attr)) {
5071 return ODP_FIT_ERROR;
5072 }
5073 expected_attrs = 0;
5074
5075 /* Metadata. */
5076 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID)) {
5077 flow->recirc_id = nl_attr_get_u32(attrs[OVS_KEY_ATTR_RECIRC_ID]);
5078 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_RECIRC_ID;
5079 } else if (is_mask) {
5080 /* Always exact match recirc_id if it is not specified. */
5081 flow->recirc_id = UINT32_MAX;
5082 }
5083
5084 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_DP_HASH)) {
5085 flow->dp_hash = nl_attr_get_u32(attrs[OVS_KEY_ATTR_DP_HASH]);
5086 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_DP_HASH;
5087 }
5088 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_PRIORITY)) {
5089 flow->skb_priority = nl_attr_get_u32(attrs[OVS_KEY_ATTR_PRIORITY]);
5090 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_PRIORITY;
5091 }
5092
5093 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK)) {
5094 flow->pkt_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_SKB_MARK]);
5095 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_SKB_MARK;
5096 }
5097
5098 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_STATE)) {
5099 uint32_t odp_state = nl_attr_get_u32(attrs[OVS_KEY_ATTR_CT_STATE]);
5100
5101 flow->ct_state = odp_to_ovs_ct_state(odp_state);
5102 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_STATE;
5103 }
5104 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_ZONE)) {
5105 flow->ct_zone = nl_attr_get_u16(attrs[OVS_KEY_ATTR_CT_ZONE]);
5106 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_ZONE;
5107 }
5108 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_MARK)) {
5109 flow->ct_mark = nl_attr_get_u32(attrs[OVS_KEY_ATTR_CT_MARK]);
5110 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_MARK;
5111 }
5112 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_CT_LABELS)) {
5113 const ovs_u128 *cl = nl_attr_get(attrs[OVS_KEY_ATTR_CT_LABELS]);
5114
5115 flow->ct_label = *cl;
5116 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_CT_LABELS;
5117 }
5118
5119 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_TUNNEL)) {
5120 enum odp_key_fitness res;
5121
5122 res = odp_tun_key_from_attr__(attrs[OVS_KEY_ATTR_TUNNEL],
5123 is_mask ? src_key : NULL,
5124 src_key_len, &src_flow->tunnel,
5125 &flow->tunnel, udpif);
5126 if (res == ODP_FIT_ERROR) {
5127 return ODP_FIT_ERROR;
5128 } else if (res == ODP_FIT_PERFECT) {
5129 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_TUNNEL;
5130 }
5131 }
5132
5133 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_IN_PORT)) {
5134 flow->in_port.odp_port
5135 = nl_attr_get_odp_port(attrs[OVS_KEY_ATTR_IN_PORT]);
5136 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_IN_PORT;
5137 } else if (!is_mask) {
5138 flow->in_port.odp_port = ODPP_NONE;
5139 }
5140
5141 /* Ethernet header. */
5142 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_ETHERNET)) {
5143 const struct ovs_key_ethernet *eth_key;
5144
5145 eth_key = nl_attr_get(attrs[OVS_KEY_ATTR_ETHERNET]);
5146 put_ethernet_key(eth_key, flow);
5147 if (is_mask) {
5148 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
5149 }
5150 }
5151 if (!is_mask) {
5152 expected_attrs |= UINT64_C(1) << OVS_KEY_ATTR_ETHERNET;
5153 }
5154
5155 /* Get Ethertype or 802.1Q TPID or FLOW_DL_TYPE_NONE. */
5156 if (!parse_ethertype(attrs, present_attrs, &expected_attrs, flow,
5157 src_flow)) {
5158 return ODP_FIT_ERROR;
5159 }
5160
5161 if (is_mask
5162 ? (src_flow->vlan_tci & htons(VLAN_CFI)) != 0
5163 : src_flow->dl_type == htons(ETH_TYPE_VLAN)) {
5164 return parse_8021q_onward(attrs, present_attrs, out_of_range_attr,
5165 expected_attrs, flow, key, key_len, src_flow);
5166 }
5167 if (is_mask) {
5168 /* A missing VLAN mask means exact match on vlan_tci 0 (== no VLAN). */
5169 flow->vlan_tci = htons(0xffff);
5170 if (present_attrs & (UINT64_C(1) << OVS_KEY_ATTR_VLAN)) {
5171 flow->vlan_tci = nl_attr_get_be16(attrs[OVS_KEY_ATTR_VLAN]);
5172 expected_attrs |= (UINT64_C(1) << OVS_KEY_ATTR_VLAN);
5173 }
5174 }
5175 return parse_l2_5_onward(attrs, present_attrs, out_of_range_attr,
5176 expected_attrs, flow, key, key_len, src_flow);
5177 }
5178
5179 /* Converts the 'key_len' bytes of OVS_KEY_ATTR_* attributes in 'key' to a flow
5180 * structure in 'flow'. Returns an ODP_FIT_* value that indicates how well
5181 * 'key' fits our expectations for what a flow key should contain.
5182 *
5183 * The 'in_port' will be the datapath's understanding of the port. The
5184 * caller will need to translate with odp_port_to_ofp_port() if the
5185 * OpenFlow port is needed.
5186 *
5187 * This function doesn't take the packet itself as an argument because none of
5188 * the currently understood OVS_KEY_ATTR_* attributes require it. Currently,
5189 * it is always possible to infer which additional attribute(s) should appear
5190 * by looking at the attributes for lower-level protocols, e.g. if the network
5191 * protocol in OVS_KEY_ATTR_IPV4 or OVS_KEY_ATTR_IPV6 is IPPROTO_TCP then we
5192 * know that a OVS_KEY_ATTR_TCP attribute must appear and that otherwise it
5193 * must be absent. */
5194 enum odp_key_fitness
5195 odp_flow_key_to_flow(const struct nlattr *key, size_t key_len,
5196 struct flow *flow)
5197 {
5198 return odp_flow_key_to_flow__(key, key_len, NULL, 0, flow, flow, false);
5199 }
5200
5201 static enum odp_key_fitness
5202 odp_flow_key_to_mask__(const struct nlattr *mask_key, size_t mask_key_len,
5203 const struct nlattr *flow_key, size_t flow_key_len,
5204 struct flow_wildcards *mask,
5205 const struct flow *src_flow,
5206 bool udpif)
5207 {
5208 if (mask_key_len) {
5209 return odp_flow_key_to_flow__(mask_key, mask_key_len,
5210 flow_key, flow_key_len,
5211 &mask->masks, src_flow, udpif);
5212
5213 } else {
5214 /* A missing mask means that the flow should be exact matched.
5215 * Generate an appropriate exact wildcard for the flow. */
5216 flow_wildcards_init_for_packet(mask, src_flow);
5217
5218 return ODP_FIT_PERFECT;
5219 }
5220 }
5221 /* Converts the 'mask_key_len' bytes of OVS_KEY_ATTR_* attributes in 'mask_key'
5222 * to a mask structure in 'mask'. 'flow' must be a previously translated flow
5223 * corresponding to 'mask' and similarly flow_key/flow_key_len must be the
5224 * attributes from that flow. Returns an ODP_FIT_* value that indicates how
5225 * well 'key' fits our expectations for what a flow key should contain. */
5226 enum odp_key_fitness
5227 odp_flow_key_to_mask(const struct nlattr *mask_key, size_t mask_key_len,
5228 const struct nlattr *flow_key, size_t flow_key_len,
5229 struct flow_wildcards *mask, const struct flow *flow)
5230 {
5231 return odp_flow_key_to_mask__(mask_key, mask_key_len,
5232 flow_key, flow_key_len,
5233 mask, flow, false);
5234 }
5235
5236 /* These functions are similar to their non-"_udpif" variants but output a
5237 * 'flow' that is suitable for fast-path packet processing.
5238 *
5239 * Some fields have different representation for flow setup and per-
5240 * packet processing (i.e. different between ofproto-dpif and userspace
5241 * datapath). In particular, with the non-"_udpif" functions, struct
5242 * tun_metadata is in the per-flow format (using 'present.map' and 'opts.u8');
5243 * with these functions, struct tun_metadata is in the per-packet format
5244 * (using 'present.len' and 'opts.gnv'). */
5245 enum odp_key_fitness
5246 odp_flow_key_to_flow_udpif(const struct nlattr *key, size_t key_len,
5247 struct flow *flow)
5248 {
5249 return odp_flow_key_to_flow__(key, key_len, NULL, 0, flow, flow, true);
5250 }
5251
5252 enum odp_key_fitness
5253 odp_flow_key_to_mask_udpif(const struct nlattr *mask_key, size_t mask_key_len,
5254 const struct nlattr *flow_key, size_t flow_key_len,
5255 struct flow_wildcards *mask,
5256 const struct flow *flow)
5257 {
5258 return odp_flow_key_to_mask__(mask_key, mask_key_len,
5259 flow_key, flow_key_len,
5260 mask, flow, true);
5261 }
5262
5263 /* Returns 'fitness' as a string, for use in debug messages. */
5264 const char *
5265 odp_key_fitness_to_string(enum odp_key_fitness fitness)
5266 {
5267 switch (fitness) {
5268 case ODP_FIT_PERFECT:
5269 return "OK";
5270 case ODP_FIT_TOO_MUCH:
5271 return "too_much";
5272 case ODP_FIT_TOO_LITTLE:
5273 return "too_little";
5274 case ODP_FIT_ERROR:
5275 return "error";
5276 default:
5277 return "<unknown>";
5278 }
5279 }
5280
5281 /* Appends an OVS_ACTION_ATTR_USERSPACE action to 'odp_actions' that specifies
5282 * Netlink PID 'pid'. If 'userdata' is nonnull, adds a userdata attribute
5283 * whose contents are the 'userdata_size' bytes at 'userdata' and returns the
5284 * offset within 'odp_actions' of the start of the cookie. (If 'userdata' is
5285 * null, then the return value is not meaningful.) */
5286 size_t
5287 odp_put_userspace_action(uint32_t pid,
5288 const void *userdata, size_t userdata_size,
5289 odp_port_t tunnel_out_port,
5290 bool include_actions,
5291 struct ofpbuf *odp_actions)
5292 {
5293 size_t userdata_ofs;
5294 size_t offset;
5295
5296 offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_USERSPACE);
5297 nl_msg_put_u32(odp_actions, OVS_USERSPACE_ATTR_PID, pid);
5298 if (userdata) {
5299 userdata_ofs = odp_actions->size + NLA_HDRLEN;
5300
5301 /* The OVS kernel module before OVS 1.11 and the upstream Linux kernel
5302 * module before Linux 3.10 required the userdata to be exactly 8 bytes
5303 * long:
5304 *
5305 * - The kernel rejected shorter userdata with -ERANGE.
5306 *
5307 * - The kernel silently dropped userdata beyond the first 8 bytes.
5308 *
5309 * Thus, for maximum compatibility, always put at least 8 bytes. (We
5310 * separately disable features that required more than 8 bytes.) */
5311 memcpy(nl_msg_put_unspec_zero(odp_actions, OVS_USERSPACE_ATTR_USERDATA,
5312 MAX(8, userdata_size)),
5313 userdata, userdata_size);
5314 } else {
5315 userdata_ofs = 0;
5316 }
5317 if (tunnel_out_port != ODPP_NONE) {
5318 nl_msg_put_odp_port(odp_actions, OVS_USERSPACE_ATTR_EGRESS_TUN_PORT,
5319 tunnel_out_port);
5320 }
5321 if (include_actions) {
5322 nl_msg_put_flag(odp_actions, OVS_USERSPACE_ATTR_ACTIONS);
5323 }
5324 nl_msg_end_nested(odp_actions, offset);
5325
5326 return userdata_ofs;
5327 }
5328
5329 void
5330 odp_put_tunnel_action(const struct flow_tnl *tunnel,
5331 struct ofpbuf *odp_actions)
5332 {
5333 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
5334 tun_key_to_attr(odp_actions, tunnel, tunnel, NULL);
5335 nl_msg_end_nested(odp_actions, offset);
5336 }
5337
5338 void
5339 odp_put_tnl_push_action(struct ofpbuf *odp_actions,
5340 struct ovs_action_push_tnl *data)
5341 {
5342 int size = offsetof(struct ovs_action_push_tnl, header);
5343
5344 size += data->header_len;
5345 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_TUNNEL_PUSH, data, size);
5346 }
5347
5348 \f
5349 /* The commit_odp_actions() function and its helpers. */
5350
5351 static void
5352 commit_set_action(struct ofpbuf *odp_actions, enum ovs_key_attr key_type,
5353 const void *key, size_t key_size)
5354 {
5355 size_t offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SET);
5356 nl_msg_put_unspec(odp_actions, key_type, key, key_size);
5357 nl_msg_end_nested(odp_actions, offset);
5358 }
5359
5360 /* Masked set actions have a mask following the data within the netlink
5361 * attribute. The unmasked bits in the data will be cleared as the data
5362 * is copied to the action. */
5363 void
5364 commit_masked_set_action(struct ofpbuf *odp_actions,
5365 enum ovs_key_attr key_type,
5366 const void *key_, const void *mask_, size_t key_size)
5367 {
5368 size_t offset = nl_msg_start_nested(odp_actions,
5369 OVS_ACTION_ATTR_SET_MASKED);
5370 char *data = nl_msg_put_unspec_uninit(odp_actions, key_type, key_size * 2);
5371 const char *key = key_, *mask = mask_;
5372
5373 memcpy(data + key_size, mask, key_size);
5374 /* Clear unmasked bits while copying. */
5375 while (key_size--) {
5376 *data++ = *key++ & *mask++;
5377 }
5378 nl_msg_end_nested(odp_actions, offset);
5379 }
5380
5381 /* If any of the flow key data that ODP actions can modify are different in
5382 * 'base->tunnel' and 'flow->tunnel', appends a set_tunnel ODP action to
5383 * 'odp_actions' that change the flow tunneling information in key from
5384 * 'base->tunnel' into 'flow->tunnel', and then changes 'base->tunnel' in the
5385 * same way. In other words, operates the same as commit_odp_actions(), but
5386 * only on tunneling information. */
5387 void
5388 commit_odp_tunnel_action(const struct flow *flow, struct flow *base,
5389 struct ofpbuf *odp_actions)
5390 {
5391 /* A valid IPV4_TUNNEL must have non-zero ip_dst; a valid IPv6 tunnel
5392 * must have non-zero ipv6_dst. */
5393 if (flow_tnl_dst_is_set(&flow->tunnel)) {
5394 if (!memcmp(&base->tunnel, &flow->tunnel, sizeof base->tunnel)) {
5395 return;
5396 }
5397 memcpy(&base->tunnel, &flow->tunnel, sizeof base->tunnel);
5398 odp_put_tunnel_action(&base->tunnel, odp_actions);
5399 }
5400 }
5401
5402 static bool
5403 commit(enum ovs_key_attr attr, bool use_masked_set,
5404 const void *key, void *base, void *mask, size_t size,
5405 struct ofpbuf *odp_actions)
5406 {
5407 if (memcmp(key, base, size)) {
5408 bool fully_masked = odp_mask_is_exact(attr, mask, size);
5409
5410 if (use_masked_set && !fully_masked) {
5411 commit_masked_set_action(odp_actions, attr, key, mask, size);
5412 } else {
5413 if (!fully_masked) {
5414 memset(mask, 0xff, size);
5415 }
5416 commit_set_action(odp_actions, attr, key, size);
5417 }
5418 memcpy(base, key, size);
5419 return true;
5420 } else {
5421 /* Mask bits are set when we have either read or set the corresponding
5422 * values. Masked bits will be exact-matched, no need to set them
5423 * if the value did not actually change. */
5424 return false;
5425 }
5426 }
5427
5428 static void
5429 get_ethernet_key(const struct flow *flow, struct ovs_key_ethernet *eth)
5430 {
5431 eth->eth_src = flow->dl_src;
5432 eth->eth_dst = flow->dl_dst;
5433 }
5434
5435 static void
5436 put_ethernet_key(const struct ovs_key_ethernet *eth, struct flow *flow)
5437 {
5438 flow->dl_src = eth->eth_src;
5439 flow->dl_dst = eth->eth_dst;
5440 }
5441
5442 static void
5443 commit_set_ether_addr_action(const struct flow *flow, struct flow *base_flow,
5444 struct ofpbuf *odp_actions,
5445 struct flow_wildcards *wc,
5446 bool use_masked)
5447 {
5448 struct ovs_key_ethernet key, base, mask;
5449
5450 get_ethernet_key(flow, &key);
5451 get_ethernet_key(base_flow, &base);
5452 get_ethernet_key(&wc->masks, &mask);
5453
5454 if (commit(OVS_KEY_ATTR_ETHERNET, use_masked,
5455 &key, &base, &mask, sizeof key, odp_actions)) {
5456 put_ethernet_key(&base, base_flow);
5457 put_ethernet_key(&mask, &wc->masks);
5458 }
5459 }
5460
5461 static void
5462 pop_vlan(struct flow *base,
5463 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5464 {
5465 memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci);
5466
5467 if (base->vlan_tci & htons(VLAN_CFI)) {
5468 nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
5469 base->vlan_tci = 0;
5470 }
5471 }
5472
5473 static void
5474 commit_vlan_action(ovs_be16 vlan_tci, struct flow *base,
5475 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5476 {
5477 if (base->vlan_tci == vlan_tci) {
5478 return;
5479 }
5480
5481 pop_vlan(base, odp_actions, wc);
5482 if (vlan_tci & htons(VLAN_CFI)) {
5483 struct ovs_action_push_vlan vlan;
5484
5485 vlan.vlan_tpid = htons(ETH_TYPE_VLAN);
5486 vlan.vlan_tci = vlan_tci;
5487 nl_msg_put_unspec(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
5488 &vlan, sizeof vlan);
5489 }
5490 base->vlan_tci = vlan_tci;
5491 }
5492
5493 /* Wildcarding already done at action translation time. */
5494 static void
5495 commit_mpls_action(const struct flow *flow, struct flow *base,
5496 struct ofpbuf *odp_actions)
5497 {
5498 int base_n = flow_count_mpls_labels(base, NULL);
5499 int flow_n = flow_count_mpls_labels(flow, NULL);
5500 int common_n = flow_count_common_mpls_labels(flow, flow_n, base, base_n,
5501 NULL);
5502
5503 while (base_n > common_n) {
5504 if (base_n - 1 == common_n && flow_n > common_n) {
5505 /* If there is only one more LSE in base than there are common
5506 * between base and flow; and flow has at least one more LSE than
5507 * is common then the topmost LSE of base may be updated using
5508 * set */
5509 struct ovs_key_mpls mpls_key;
5510
5511 mpls_key.mpls_lse = flow->mpls_lse[flow_n - base_n];
5512 commit_set_action(odp_actions, OVS_KEY_ATTR_MPLS,
5513 &mpls_key, sizeof mpls_key);
5514 flow_set_mpls_lse(base, 0, mpls_key.mpls_lse);
5515 common_n++;
5516 } else {
5517 /* Otherwise, if there more LSEs in base than are common between
5518 * base and flow then pop the topmost one. */
5519 ovs_be16 dl_type;
5520 bool popped;
5521
5522 /* If all the LSEs are to be popped and this is not the outermost
5523 * LSE then use ETH_TYPE_MPLS as the ethertype parameter of the
5524 * POP_MPLS action instead of flow->dl_type.
5525 *
5526 * This is because the POP_MPLS action requires its ethertype
5527 * argument to be an MPLS ethernet type but in this case
5528 * flow->dl_type will be a non-MPLS ethernet type.
5529 *
5530 * When the final POP_MPLS action occurs it use flow->dl_type and
5531 * the and the resulting packet will have the desired dl_type. */
5532 if ((!eth_type_mpls(flow->dl_type)) && base_n > 1) {
5533 dl_type = htons(ETH_TYPE_MPLS);
5534 } else {
5535 dl_type = flow->dl_type;
5536 }
5537 nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_POP_MPLS, dl_type);
5538 popped = flow_pop_mpls(base, base_n, flow->dl_type, NULL);
5539 ovs_assert(popped);
5540 base_n--;
5541 }
5542 }
5543
5544 /* If, after the above popping and setting, there are more LSEs in flow
5545 * than base then some LSEs need to be pushed. */
5546 while (base_n < flow_n) {
5547 struct ovs_action_push_mpls *mpls;
5548
5549 mpls = nl_msg_put_unspec_zero(odp_actions,
5550 OVS_ACTION_ATTR_PUSH_MPLS,
5551 sizeof *mpls);
5552 mpls->mpls_ethertype = flow->dl_type;
5553 mpls->mpls_lse = flow->mpls_lse[flow_n - base_n - 1];
5554 flow_push_mpls(base, base_n, mpls->mpls_ethertype, NULL);
5555 flow_set_mpls_lse(base, 0, mpls->mpls_lse);
5556 base_n++;
5557 }
5558 }
5559
5560 static void
5561 get_ipv4_key(const struct flow *flow, struct ovs_key_ipv4 *ipv4, bool is_mask)
5562 {
5563 ipv4->ipv4_src = flow->nw_src;
5564 ipv4->ipv4_dst = flow->nw_dst;
5565 ipv4->ipv4_proto = flow->nw_proto;
5566 ipv4->ipv4_tos = flow->nw_tos;
5567 ipv4->ipv4_ttl = flow->nw_ttl;
5568 ipv4->ipv4_frag = ovs_to_odp_frag(flow->nw_frag, is_mask);
5569 }
5570
5571 static void
5572 put_ipv4_key(const struct ovs_key_ipv4 *ipv4, struct flow *flow, bool is_mask)
5573 {
5574 flow->nw_src = ipv4->ipv4_src;
5575 flow->nw_dst = ipv4->ipv4_dst;
5576 flow->nw_proto = ipv4->ipv4_proto;
5577 flow->nw_tos = ipv4->ipv4_tos;
5578 flow->nw_ttl = ipv4->ipv4_ttl;
5579 flow->nw_frag = odp_to_ovs_frag(ipv4->ipv4_frag, is_mask);
5580 }
5581
5582 static void
5583 commit_set_ipv4_action(const struct flow *flow, struct flow *base_flow,
5584 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5585 bool use_masked)
5586 {
5587 struct ovs_key_ipv4 key, mask, base;
5588
5589 /* Check that nw_proto and nw_frag remain unchanged. */
5590 ovs_assert(flow->nw_proto == base_flow->nw_proto &&
5591 flow->nw_frag == base_flow->nw_frag);
5592
5593 get_ipv4_key(flow, &key, false);
5594 get_ipv4_key(base_flow, &base, false);
5595 get_ipv4_key(&wc->masks, &mask, true);
5596 mask.ipv4_proto = 0; /* Not writeable. */
5597 mask.ipv4_frag = 0; /* Not writable. */
5598
5599 if (commit(OVS_KEY_ATTR_IPV4, use_masked, &key, &base, &mask, sizeof key,
5600 odp_actions)) {
5601 put_ipv4_key(&base, base_flow, false);
5602 if (mask.ipv4_proto != 0) { /* Mask was changed by commit(). */
5603 put_ipv4_key(&mask, &wc->masks, true);
5604 }
5605 }
5606 }
5607
5608 static void
5609 get_ipv6_key(const struct flow *flow, struct ovs_key_ipv6 *ipv6, bool is_mask)
5610 {
5611 memcpy(ipv6->ipv6_src, &flow->ipv6_src, sizeof ipv6->ipv6_src);
5612 memcpy(ipv6->ipv6_dst, &flow->ipv6_dst, sizeof ipv6->ipv6_dst);
5613 ipv6->ipv6_label = flow->ipv6_label;
5614 ipv6->ipv6_proto = flow->nw_proto;
5615 ipv6->ipv6_tclass = flow->nw_tos;
5616 ipv6->ipv6_hlimit = flow->nw_ttl;
5617 ipv6->ipv6_frag = ovs_to_odp_frag(flow->nw_frag, is_mask);
5618 }
5619
5620 static void
5621 put_ipv6_key(const struct ovs_key_ipv6 *ipv6, struct flow *flow, bool is_mask)
5622 {
5623 memcpy(&flow->ipv6_src, ipv6->ipv6_src, sizeof flow->ipv6_src);
5624 memcpy(&flow->ipv6_dst, ipv6->ipv6_dst, sizeof flow->ipv6_dst);
5625 flow->ipv6_label = ipv6->ipv6_label;
5626 flow->nw_proto = ipv6->ipv6_proto;
5627 flow->nw_tos = ipv6->ipv6_tclass;
5628 flow->nw_ttl = ipv6->ipv6_hlimit;
5629 flow->nw_frag = odp_to_ovs_frag(ipv6->ipv6_frag, is_mask);
5630 }
5631
5632 static void
5633 commit_set_ipv6_action(const struct flow *flow, struct flow *base_flow,
5634 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5635 bool use_masked)
5636 {
5637 struct ovs_key_ipv6 key, mask, base;
5638
5639 /* Check that nw_proto and nw_frag remain unchanged. */
5640 ovs_assert(flow->nw_proto == base_flow->nw_proto &&
5641 flow->nw_frag == base_flow->nw_frag);
5642
5643 get_ipv6_key(flow, &key, false);
5644 get_ipv6_key(base_flow, &base, false);
5645 get_ipv6_key(&wc->masks, &mask, true);
5646 mask.ipv6_proto = 0; /* Not writeable. */
5647 mask.ipv6_frag = 0; /* Not writable. */
5648
5649 if (commit(OVS_KEY_ATTR_IPV6, use_masked, &key, &base, &mask, sizeof key,
5650 odp_actions)) {
5651 put_ipv6_key(&base, base_flow, false);
5652 if (mask.ipv6_proto != 0) { /* Mask was changed by commit(). */
5653 put_ipv6_key(&mask, &wc->masks, true);
5654 }
5655 }
5656 }
5657
5658 static void
5659 get_arp_key(const struct flow *flow, struct ovs_key_arp *arp)
5660 {
5661 /* ARP key has padding, clear it. */
5662 memset(arp, 0, sizeof *arp);
5663
5664 arp->arp_sip = flow->nw_src;
5665 arp->arp_tip = flow->nw_dst;
5666 arp->arp_op = htons(flow->nw_proto);
5667 arp->arp_sha = flow->arp_sha;
5668 arp->arp_tha = flow->arp_tha;
5669 }
5670
5671 static void
5672 put_arp_key(const struct ovs_key_arp *arp, struct flow *flow)
5673 {
5674 flow->nw_src = arp->arp_sip;
5675 flow->nw_dst = arp->arp_tip;
5676 flow->nw_proto = ntohs(arp->arp_op);
5677 flow->arp_sha = arp->arp_sha;
5678 flow->arp_tha = arp->arp_tha;
5679 }
5680
5681 static enum slow_path_reason
5682 commit_set_arp_action(const struct flow *flow, struct flow *base_flow,
5683 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5684 {
5685 struct ovs_key_arp key, mask, base;
5686
5687 get_arp_key(flow, &key);
5688 get_arp_key(base_flow, &base);
5689 get_arp_key(&wc->masks, &mask);
5690
5691 if (commit(OVS_KEY_ATTR_ARP, true, &key, &base, &mask, sizeof key,
5692 odp_actions)) {
5693 put_arp_key(&base, base_flow);
5694 put_arp_key(&mask, &wc->masks);
5695 return SLOW_ACTION;
5696 }
5697 return 0;
5698 }
5699
5700 static void
5701 get_icmp_key(const struct flow *flow, struct ovs_key_icmp *icmp)
5702 {
5703 /* icmp_type and icmp_code are stored in tp_src and tp_dst, respectively */
5704 icmp->icmp_type = ntohs(flow->tp_src);
5705 icmp->icmp_code = ntohs(flow->tp_dst);
5706 }
5707
5708 static void
5709 put_icmp_key(const struct ovs_key_icmp *icmp, struct flow *flow)
5710 {
5711 /* icmp_type and icmp_code are stored in tp_src and tp_dst, respectively */
5712 flow->tp_src = htons(icmp->icmp_type);
5713 flow->tp_dst = htons(icmp->icmp_code);
5714 }
5715
5716 static enum slow_path_reason
5717 commit_set_icmp_action(const struct flow *flow, struct flow *base_flow,
5718 struct ofpbuf *odp_actions, struct flow_wildcards *wc)
5719 {
5720 struct ovs_key_icmp key, mask, base;
5721 enum ovs_key_attr attr;
5722
5723 if (is_icmpv4(flow)) {
5724 attr = OVS_KEY_ATTR_ICMP;
5725 } else if (is_icmpv6(flow)) {
5726 attr = OVS_KEY_ATTR_ICMPV6;
5727 } else {
5728 return 0;
5729 }
5730
5731 get_icmp_key(flow, &key);
5732 get_icmp_key(base_flow, &base);
5733 get_icmp_key(&wc->masks, &mask);
5734
5735 if (commit(attr, false, &key, &base, &mask, sizeof key, odp_actions)) {
5736 put_icmp_key(&base, base_flow);
5737 put_icmp_key(&mask, &wc->masks);
5738 return SLOW_ACTION;
5739 }
5740 return 0;
5741 }
5742
5743 static void
5744 get_nd_key(const struct flow *flow, struct ovs_key_nd *nd)
5745 {
5746 memcpy(nd->nd_target, &flow->nd_target, sizeof flow->nd_target);
5747 /* nd_sll and nd_tll are stored in arp_sha and arp_tha, respectively */
5748 nd->nd_sll = flow->arp_sha;
5749 nd->nd_tll = flow->arp_tha;
5750 }
5751
5752 static void
5753 put_nd_key(const struct ovs_key_nd *nd, struct flow *flow)
5754 {
5755 memcpy(&flow->nd_target, nd->nd_target, sizeof flow->nd_target);
5756 /* nd_sll and nd_tll are stored in arp_sha and arp_tha, respectively */
5757 flow->arp_sha = nd->nd_sll;
5758 flow->arp_tha = nd->nd_tll;
5759 }
5760
5761 static enum slow_path_reason
5762 commit_set_nd_action(const struct flow *flow, struct flow *base_flow,
5763 struct ofpbuf *odp_actions,
5764 struct flow_wildcards *wc, bool use_masked)
5765 {
5766 struct ovs_key_nd key, mask, base;
5767
5768 get_nd_key(flow, &key);
5769 get_nd_key(base_flow, &base);
5770 get_nd_key(&wc->masks, &mask);
5771
5772 if (commit(OVS_KEY_ATTR_ND, use_masked, &key, &base, &mask, sizeof key,
5773 odp_actions)) {
5774 put_nd_key(&base, base_flow);
5775 put_nd_key(&mask, &wc->masks);
5776 return SLOW_ACTION;
5777 }
5778
5779 return 0;
5780 }
5781
5782 static enum slow_path_reason
5783 commit_set_nw_action(const struct flow *flow, struct flow *base,
5784 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5785 bool use_masked)
5786 {
5787 /* Check if 'flow' really has an L3 header. */
5788 if (!flow->nw_proto) {
5789 return 0;
5790 }
5791
5792 switch (ntohs(base->dl_type)) {
5793 case ETH_TYPE_IP:
5794 commit_set_ipv4_action(flow, base, odp_actions, wc, use_masked);
5795 break;
5796
5797 case ETH_TYPE_IPV6:
5798 commit_set_ipv6_action(flow, base, odp_actions, wc, use_masked);
5799 return commit_set_nd_action(flow, base, odp_actions, wc, use_masked);
5800
5801 case ETH_TYPE_ARP:
5802 return commit_set_arp_action(flow, base, odp_actions, wc);
5803 }
5804
5805 return 0;
5806 }
5807
5808 /* TCP, UDP, and SCTP keys have the same layout. */
5809 BUILD_ASSERT_DECL(sizeof(struct ovs_key_tcp) == sizeof(struct ovs_key_udp) &&
5810 sizeof(struct ovs_key_tcp) == sizeof(struct ovs_key_sctp));
5811
5812 static void
5813 get_tp_key(const struct flow *flow, union ovs_key_tp *tp)
5814 {
5815 tp->tcp.tcp_src = flow->tp_src;
5816 tp->tcp.tcp_dst = flow->tp_dst;
5817 }
5818
5819 static void
5820 put_tp_key(const union ovs_key_tp *tp, struct flow *flow)
5821 {
5822 flow->tp_src = tp->tcp.tcp_src;
5823 flow->tp_dst = tp->tcp.tcp_dst;
5824 }
5825
5826 static void
5827 commit_set_port_action(const struct flow *flow, struct flow *base_flow,
5828 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5829 bool use_masked)
5830 {
5831 enum ovs_key_attr key_type;
5832 union ovs_key_tp key, mask, base;
5833
5834 /* Check if 'flow' really has an L3 header. */
5835 if (!flow->nw_proto) {
5836 return;
5837 }
5838
5839 if (!is_ip_any(base_flow)) {
5840 return;
5841 }
5842
5843 if (flow->nw_proto == IPPROTO_TCP) {
5844 key_type = OVS_KEY_ATTR_TCP;
5845 } else if (flow->nw_proto == IPPROTO_UDP) {
5846 key_type = OVS_KEY_ATTR_UDP;
5847 } else if (flow->nw_proto == IPPROTO_SCTP) {
5848 key_type = OVS_KEY_ATTR_SCTP;
5849 } else {
5850 return;
5851 }
5852
5853 get_tp_key(flow, &key);
5854 get_tp_key(base_flow, &base);
5855 get_tp_key(&wc->masks, &mask);
5856
5857 if (commit(key_type, use_masked, &key, &base, &mask, sizeof key,
5858 odp_actions)) {
5859 put_tp_key(&base, base_flow);
5860 put_tp_key(&mask, &wc->masks);
5861 }
5862 }
5863
5864 static void
5865 commit_set_priority_action(const struct flow *flow, struct flow *base_flow,
5866 struct ofpbuf *odp_actions,
5867 struct flow_wildcards *wc,
5868 bool use_masked)
5869 {
5870 uint32_t key, mask, base;
5871
5872 key = flow->skb_priority;
5873 base = base_flow->skb_priority;
5874 mask = wc->masks.skb_priority;
5875
5876 if (commit(OVS_KEY_ATTR_PRIORITY, use_masked, &key, &base, &mask,
5877 sizeof key, odp_actions)) {
5878 base_flow->skb_priority = base;
5879 wc->masks.skb_priority = mask;
5880 }
5881 }
5882
5883 static void
5884 commit_set_pkt_mark_action(const struct flow *flow, struct flow *base_flow,
5885 struct ofpbuf *odp_actions,
5886 struct flow_wildcards *wc,
5887 bool use_masked)
5888 {
5889 uint32_t key, mask, base;
5890
5891 key = flow->pkt_mark;
5892 base = base_flow->pkt_mark;
5893 mask = wc->masks.pkt_mark;
5894
5895 if (commit(OVS_KEY_ATTR_SKB_MARK, use_masked, &key, &base, &mask,
5896 sizeof key, odp_actions)) {
5897 base_flow->pkt_mark = base;
5898 wc->masks.pkt_mark = mask;
5899 }
5900 }
5901
5902 /* If any of the flow key data that ODP actions can modify are different in
5903 * 'base' and 'flow', appends ODP actions to 'odp_actions' that change the flow
5904 * key from 'base' into 'flow', and then changes 'base' the same way. Does not
5905 * commit set_tunnel actions. Users should call commit_odp_tunnel_action()
5906 * in addition to this function if needed. Sets fields in 'wc' that are
5907 * used as part of the action.
5908 *
5909 * Returns a reason to force processing the flow's packets into the userspace
5910 * slow path, if there is one, otherwise 0. */
5911 enum slow_path_reason
5912 commit_odp_actions(const struct flow *flow, struct flow *base,
5913 struct ofpbuf *odp_actions, struct flow_wildcards *wc,
5914 bool use_masked)
5915 {
5916 enum slow_path_reason slow1, slow2;
5917
5918 commit_set_ether_addr_action(flow, base, odp_actions, wc, use_masked);
5919 slow1 = commit_set_nw_action(flow, base, odp_actions, wc, use_masked);
5920 commit_set_port_action(flow, base, odp_actions, wc, use_masked);
5921 slow2 = commit_set_icmp_action(flow, base, odp_actions, wc);
5922 commit_mpls_action(flow, base, odp_actions);
5923 commit_vlan_action(flow->vlan_tci, base, odp_actions, wc);
5924 commit_set_priority_action(flow, base, odp_actions, wc, use_masked);
5925 commit_set_pkt_mark_action(flow, base, odp_actions, wc, use_masked);
5926
5927 return slow1 ? slow1 : slow2;
5928 }
openvswitch packages for PVE