projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ar5523: Use kzalloc instead of kmalloc/memset
[linux-block.git] / net / sched / cls_flower.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
77b9900e
JP		 2/*
3 * net/sched/cls_flower.c Flower classifier
4 *
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
77b9900e
JP		 6 */
7
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/rhashtable.h>
d9363774 12#include <linux/workqueue.h>
06177558 13#include <linux/refcount.h>
77b9900e
JP		 14
15#include <linux/if_ether.h>
16#include <linux/in6.h>
17#include <linux/ip.h>
a577d8f7 18#include <linux/mpls.h>
77b9900e
JP		 19
20#include <net/sch_generic.h>
21#include <net/pkt_cls.h>
ec624fe7 22#include <net/pkt_sched.h>
77b9900e
JP		 23#include <net/ip.h>
24#include <net/flow_dissector.h>
0a6e7778 25#include <net/geneve.h>
d8f9dfae 26#include <net/vxlan.h>
79b1011c 27#include <net/erspan.h>
e3acda7a 28#include <net/gtp.h>
77b9900e 29
bc3103f1
AV		 30#include <net/dst.h>
31#include <net/dst_metadata.h>
32
e0ace68a
PB		 33#include <uapi/linux/netfilter/nf_conntrack_common.h>
34
1bcc51ac 35#define TCA_FLOWER_KEY_CT_FLAGS_MAX \
36 ((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
37#define TCA_FLOWER_KEY_CT_FLAGS_MASK \
38 (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
39
77b9900e 40struct fl_flow_key {
8212ed77 41 struct flow_dissector_key_meta meta;
42aecaa9 42 struct flow_dissector_key_control control;
bc3103f1 43 struct flow_dissector_key_control enc_control;
77b9900e
JP		 44 struct flow_dissector_key_basic basic;
45 struct flow_dissector_key_eth_addrs eth;
9399ae9a 46 struct flow_dissector_key_vlan vlan;
d64efd09 47 struct flow_dissector_key_vlan cvlan;
77b9900e 48 union {
c3f83241 49 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 50 struct flow_dissector_key_ipv6_addrs ipv6;
51 };
52 struct flow_dissector_key_ports tp;
7b684884 53 struct flow_dissector_key_icmp icmp;
99d31326 54 struct flow_dissector_key_arp arp;
bc3103f1
AV		 55 struct flow_dissector_key_keyid enc_key_id;
56 union {
57 struct flow_dissector_key_ipv4_addrs enc_ipv4;
58 struct flow_dissector_key_ipv6_addrs enc_ipv6;
59 };
f4d997fd 60 struct flow_dissector_key_ports enc_tp;
a577d8f7 61 struct flow_dissector_key_mpls mpls;
fdfc7dd6 62 struct flow_dissector_key_tcp tcp;
4d80cc0a 63 struct flow_dissector_key_ip ip;
0e2c17b6 64 struct flow_dissector_key_ip enc_ip;
0a6e7778 65 struct flow_dissector_key_enc_opts enc_opts;
8ffb055b
YK		 66 union {
67 struct flow_dissector_key_ports tp;
68 struct {
69 struct flow_dissector_key_ports tp_min;
70 struct flow_dissector_key_ports tp_max;
71 };
72 } tp_range;
e0ace68a 73 struct flow_dissector_key_ct ct;
5923b8f7 74 struct flow_dissector_key_hash hash;
77b9900e
JP		 75} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
76
77struct fl_flow_mask_range {
78 unsigned short int start;
79 unsigned short int end;
80};
81
82struct fl_flow_mask {
83 struct fl_flow_key key;
84 struct fl_flow_mask_range range;
5c72299f 85 u32 flags;
05cd271f
PB		 86 struct rhash_head ht_node;
87 struct rhashtable ht;
88 struct rhashtable_params filter_ht_params;
89 struct flow_dissector dissector;
90 struct list_head filters;
44a5cd43 91 struct rcu_work rwork;
05cd271f 92 struct list_head list;
f48ef4d5 93 refcount_t refcnt;
77b9900e
JP		 94};
95
b95ec7eb
JP		 96struct fl_flow_tmplt {
97 struct fl_flow_key dummy_key;
98 struct fl_flow_key mask;
99 struct flow_dissector dissector;
100 struct tcf_chain *chain;
101};
102
77b9900e
JP		 103struct cls_fl_head {
104 struct rhashtable ht;
259e60f9 105 spinlock_t masks_lock; /* Protect masks list */
05cd271f 106 struct list_head masks;
c049d56e 107 struct list_head hw_filters;
aaa908ff 108 struct rcu_work rwork;
c15ab236 109 struct idr handle_idr;
77b9900e
JP		 110};
111
112struct cls_fl_filter {
05cd271f 113 struct fl_flow_mask *mask;
77b9900e
JP		 114 struct rhash_head ht_node;
115 struct fl_flow_key mkey;
116 struct tcf_exts exts;
117 struct tcf_result res;
118 struct fl_flow_key key;
119 struct list_head list;
c049d56e 120 struct list_head hw_list;
77b9900e 121 u32 handle;
e69985c6 122 u32 flags;
86c55361 123 u32 in_hw_count;
aaa908ff 124 struct rcu_work rwork;
7091d8c7 125 struct net_device *hw_dev;
06177558
VB		 126 /* Flower classifier is unlocked, which means that its reference counter
127 * can be changed concurrently without any kind of external
128 * synchronization. Use atomic reference counter to be concurrency-safe.
129 */
130 refcount_t refcnt;
b2552b8c 131 bool deleted;
77b9900e
JP		 132};
133
05cd271f
PB		 134static const struct rhashtable_params mask_ht_params = {
135 .key_offset = offsetof(struct fl_flow_mask, key),
136 .key_len = sizeof(struct fl_flow_key),
137 .head_offset = offsetof(struct fl_flow_mask, ht_node),
138 .automatic_shrinking = true,
139};
140
77b9900e
JP		 141static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
142{
143 return mask->range.end - mask->range.start;
144}
145
146static void fl_mask_update_range(struct fl_flow_mask *mask)
147{
148 const u8 *bytes = (const u8 *) &mask->key;
149 size_t size = sizeof(mask->key);
05cd271f 150 size_t i, first = 0, last;
77b9900e 151
05cd271f
PB		 152 for (i = 0; i < size; i++) {
153 if (bytes[i]) {
154 first = i;
155 break;
156 }
157 }
158 last = first;
159 for (i = size - 1; i != first; i--) {
77b9900e 160 if (bytes[i]) {
77b9900e 161 last = i;
05cd271f 162 break;
77b9900e
JP		 163 }
164 }
165 mask->range.start = rounddown(first, sizeof(long));
166 mask->range.end = roundup(last + 1, sizeof(long));
167}
168
169static void *fl_key_get_start(struct fl_flow_key *key,
170 const struct fl_flow_mask *mask)
171{
172 return (u8 *) key + mask->range.start;
173}
174
175static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
176 struct fl_flow_mask *mask)
177{
178 const long *lkey = fl_key_get_start(key, mask);
179 const long *lmask = fl_key_get_start(&mask->key, mask);
180 long *lmkey = fl_key_get_start(mkey, mask);
181 int i;
182
183 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
184 *lmkey++ = *lkey++ & *lmask++;
185}
186
b95ec7eb
JP		 187static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
188 struct fl_flow_mask *mask)
189{
190 const long *lmask = fl_key_get_start(&mask->key, mask);
191 const long *ltmplt;
192 int i;
193
194 if (!tmplt)
195 return true;
196 ltmplt = fl_key_get_start(&tmplt->mask, mask);
197 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
198 if (~*ltmplt++ & *lmask++)
199 return false;
200 }
201 return true;
202}
203
77b9900e
JP		 204static void fl_clear_masked_range(struct fl_flow_key *key,
205 struct fl_flow_mask *mask)
206{
207 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
208}
209
5c72299f
AN		 210static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
211 struct fl_flow_key *key,
212 struct fl_flow_key *mkey)
213{
6215afcb 214 u16 min_mask, max_mask, min_val, max_val;
5c72299f 215
6215afcb
VO		 216 min_mask = ntohs(filter->mask->key.tp_range.tp_min.dst);
217 max_mask = ntohs(filter->mask->key.tp_range.tp_max.dst);
218 min_val = ntohs(filter->key.tp_range.tp_min.dst);
219 max_val = ntohs(filter->key.tp_range.tp_max.dst);
5c72299f
AN		 220
221 if (min_mask && max_mask) {
6215afcb
VO		 222 if (ntohs(key->tp_range.tp.dst) < min_val ||
223 ntohs(key->tp_range.tp.dst) > max_val)
5c72299f
AN		 224 return false;
225
226 /* skb does not have min and max values */
8ffb055b
YK		 227 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
228 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
5c72299f
AN		 229 }
230 return true;
231}
232
233static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
234 struct fl_flow_key *key,
235 struct fl_flow_key *mkey)
236{
6215afcb 237 u16 min_mask, max_mask, min_val, max_val;
5c72299f 238
6215afcb
VO		 239 min_mask = ntohs(filter->mask->key.tp_range.tp_min.src);
240 max_mask = ntohs(filter->mask->key.tp_range.tp_max.src);
241 min_val = ntohs(filter->key.tp_range.tp_min.src);
242 max_val = ntohs(filter->key.tp_range.tp_max.src);
5c72299f
AN		 243
244 if (min_mask && max_mask) {
6215afcb
VO		 245 if (ntohs(key->tp_range.tp.src) < min_val ||
246 ntohs(key->tp_range.tp.src) > max_val)
5c72299f
AN		 247 return false;
248
249 /* skb does not have min and max values */
8ffb055b
YK		 250 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
251 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
5c72299f
AN		 252 }
253 return true;
254}
255
256static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
257 struct fl_flow_key *mkey)
a3308d8f 258{
05cd271f
PB		 259 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
260 mask->filter_ht_params);
a3308d8f
PB		 261}
262
5c72299f
AN		 263static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
264 struct fl_flow_key *mkey,
265 struct fl_flow_key *key)
266{
267 struct cls_fl_filter *filter, *f;
268
269 list_for_each_entry_rcu(filter, &mask->filters, list) {
270 if (!fl_range_port_dst_cmp(filter, key, mkey))
271 continue;
272
273 if (!fl_range_port_src_cmp(filter, key, mkey))
274 continue;
275
276 f = __fl_lookup(mask, mkey);
277 if (f)
278 return f;
279 }
280 return NULL;
281}
282
0af413bd
AB		 283static noinline_for_stack
284struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
5c72299f 285{
0af413bd
AB		 286 struct fl_flow_key mkey;
287
288 fl_set_masked_key(&mkey, key, mask);
5c72299f 289 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
0af413bd 290 return fl_lookup_range(mask, &mkey, key);
5c72299f 291
0af413bd 292 return __fl_lookup(mask, &mkey);
5c72299f
AN		 293}
294
e0ace68a
PB		 295static u16 fl_ct_info_to_flower_map[] = {
296 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
297 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
298 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
299 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
300 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
8c85d18c
PB		 301 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
302 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
e0ace68a 303 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
8c85d18c
PB		 304 TCA_FLOWER_KEY_CT_FLAGS_RELATED |
305 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
e0ace68a
PB		 306 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
307 TCA_FLOWER_KEY_CT_FLAGS_NEW,
308};
309
77b9900e
JP		 310static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
311 struct tcf_result *res)
312{
313 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
ec624fe7 314 bool post_ct = tc_skb_cb(skb)->post_ct;
38495958 315 u16 zone = tc_skb_cb(skb)->zone;
e0ace68a
PB		 316 struct fl_flow_key skb_key;
317 struct fl_flow_mask *mask;
318 struct cls_fl_filter *f;
77b9900e 319
05cd271f 320 list_for_each_entry_rcu(mask, &head->masks, list) {
8a9093c7 321 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
05cd271f 322 fl_clear_masked_range(&skb_key, mask);
bc3103f1 323
8212ed77 324 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
05cd271f
PB		 325 /* skb_flow_dissect() does not set n_proto in case an unknown
326 * protocol, so do it rather here.
327 */
d7bf2ebe 328 skb_key.basic.n_proto = skb_protocol(skb, false);
05cd271f 329 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
e0ace68a
PB		 330 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
331 fl_ct_info_to_flower_map,
7baf2429 332 ARRAY_SIZE(fl_ct_info_to_flower_map),
38495958 333 post_ct, zone);
5923b8f7 334 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
6de6e46d
YK		 335 skb_flow_dissect(skb, &mask->dissector, &skb_key,
336 FLOW_DISSECTOR_F_STOP_BEFORE_ENCAP);
77b9900e 337
0af413bd 338 f = fl_mask_lookup(mask, &skb_key);
05cd271f
PB		 339 if (f && !tc_skip_sw(f->flags)) {
340 *res = f->res;
341 return tcf_exts_exec(skb, &f->exts, res);
342 }
77b9900e
JP		 343 }
344 return -1;
345}
346
347static int fl_init(struct tcf_proto *tp)
348{
349 struct cls_fl_head *head;
350
351 head = kzalloc(sizeof(*head), GFP_KERNEL);
352 if (!head)
353 return -ENOBUFS;
354
259e60f9 355 spin_lock_init(&head->masks_lock);
05cd271f 356 INIT_LIST_HEAD_RCU(&head->masks);
c049d56e 357 INIT_LIST_HEAD(&head->hw_filters);
77b9900e 358 rcu_assign_pointer(tp->root, head);
c15ab236 359 idr_init(&head->handle_idr);
77b9900e 360
05cd271f
PB		 361 return rhashtable_init(&head->ht, &mask_ht_params);
362}
363
99815f50 364static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
44a5cd43 365{
99815f50
VB		 366 /* temporary masks don't have their filters list and ht initialized */
367 if (mask_init_done) {
368 WARN_ON(!list_empty(&mask->filters));
369 rhashtable_destroy(&mask->ht);
370 }
44a5cd43
PA		 371 kfree(mask);
372}
373
374static void fl_mask_free_work(struct work_struct *work)
375{
376 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
377 struct fl_flow_mask, rwork);
378
99815f50
VB		 379 fl_mask_free(mask, true);
380}
381
382static void fl_uninit_mask_free_work(struct work_struct *work)
383{
384 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
385 struct fl_flow_mask, rwork);
386
387 fl_mask_free(mask, false);
44a5cd43
PA		 388}
389
9994677c 390static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
05cd271f 391{
f48ef4d5 392 if (!refcount_dec_and_test(&mask->refcnt))
05cd271f
PB		 393 return false;
394
395 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
259e60f9
VB		 396
397 spin_lock(&head->masks_lock);
05cd271f 398 list_del_rcu(&mask->list);
259e60f9
VB		 399 spin_unlock(&head->masks_lock);
400
9994677c 401 tcf_queue_work(&mask->rwork, fl_mask_free_work);
05cd271f
PB		 402
403 return true;
77b9900e
JP		 404}
405
c049d56e
VB		 406static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
407{
408 /* Flower classifier only changes root pointer during init and destroy.
409 * Users must obtain reference to tcf_proto instance before calling its
410 * API, so tp->root pointer is protected from concurrent call to
411 * fl_destroy() by reference counting.
412 */
413 return rcu_dereference_raw(tp->root);
414}
415
0dadc117
CW		 416static void __fl_destroy_filter(struct cls_fl_filter *f)
417{
418 tcf_exts_destroy(&f->exts);
419 tcf_exts_put_net(&f->exts);
420 kfree(f);
421}
422
0552c8af 423static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 424{
aaa908ff
CW		 425 struct cls_fl_filter *f = container_of(to_rcu_work(work),
426 struct cls_fl_filter, rwork);
77b9900e 427
0dadc117 428 __fl_destroy_filter(f);
0552c8af
CW		 429}
430
1b0f8037 431static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8 432 bool rtnl_held, struct netlink_ext_ack *extack)
5b33f488 433{
208c0f4b 434 struct tcf_block *block = tp->chain->block;
f9e30088 435 struct flow_cls_offload cls_flower = {};
5b33f488 436
d6787147 437 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 438 cls_flower.command = FLOW_CLS_DESTROY;
de4784ca 439 cls_flower.cookie = (unsigned long) f;
5b33f488 440
40119211 441 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
918190f5 442 &f->flags, &f->in_hw_count, rtnl_held);
c24e43d8 443
5b33f488
AV		 444}
445
e8eb36cd 446static int fl_hw_replace_filter(struct tcf_proto *tp,
c24e43d8 447 struct cls_fl_filter *f, bool rtnl_held,
41002038 448 struct netlink_ext_ack *extack)
5b33f488 449{
208c0f4b 450 struct tcf_block *block = tp->chain->block;
f9e30088 451 struct flow_cls_offload cls_flower = {};
717503b9 452 bool skip_sw = tc_skip_sw(f->flags);
c24e43d8
VB		 453 int err = 0;
454
e3ab786b 455 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
918190f5
VB		 456 if (!cls_flower.rule)
457 return -ENOMEM;
8f256622 458
d6787147 459 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 460 cls_flower.command = FLOW_CLS_REPLACE;
de4784ca 461 cls_flower.cookie = (unsigned long) f;
8f256622
PNA		 462 cls_flower.rule->match.dissector = &f->mask->dissector;
463 cls_flower.rule->match.mask = &f->mask->key;
464 cls_flower.rule->match.key = &f->mkey;
384c181e 465 cls_flower.classid = f->res.classid;
5b33f488 466
c2ccf84e
IS		 467 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
468 cls_flower.common.extack);
3a7b6861
PNA		 469 if (err) {
470 kfree(cls_flower.rule);
11c95317
IS		 471
472 return skip_sw ? err : 0;
3a7b6861
PNA		 473 }
474
40119211 475 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
918190f5 476 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
9c1c0e12 477 tc_cleanup_offload_action(&cls_flower.rule->action);
8f256622
PNA		 478 kfree(cls_flower.rule);
479
40119211 480 if (err) {
918190f5
VB		 481 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
482 return err;
717503b9
JP		 483 }
484
918190f5
VB		 485 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
486 return -EINVAL;
c24e43d8 487
918190f5 488 return 0;
5b33f488
AV		 489}
490
c24e43d8
VB		 491static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
492 bool rtnl_held)
10cbc684 493{
208c0f4b 494 struct tcf_block *block = tp->chain->block;
f9e30088 495 struct flow_cls_offload cls_flower = {};
10cbc684 496
d6787147 497 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
f9e30088 498 cls_flower.command = FLOW_CLS_STATS;
de4784ca 499 cls_flower.cookie = (unsigned long) f;
384c181e 500 cls_flower.classid = f->res.classid;
10cbc684 501
918190f5
VB		 502 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
503 rtnl_held);
3b1903ef 504
bcd64368
BZ		 505 tcf_exts_hw_stats_update(&f->exts, cls_flower.stats.bytes,
506 cls_flower.stats.pkts,
507 cls_flower.stats.drops,
508 cls_flower.stats.lastused,
509 cls_flower.stats.used_hw_stats,
510 cls_flower.stats.used_hw_stats_valid);
10cbc684
AV		 511}
512
06177558
VB		 513static void __fl_put(struct cls_fl_filter *f)
514{
515 if (!refcount_dec_and_test(&f->refcnt))
516 return;
517
518 if (tcf_exts_get_net(&f->exts))
519 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
520 else
521 __fl_destroy_filter(f);
522}
523
524static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
525{
526 struct cls_fl_filter *f;
527
528 rcu_read_lock();
529 f = idr_find(&head->handle_idr, handle);
530 if (f && !refcount_inc_not_zero(&f->refcnt))
531 f = NULL;
532 rcu_read_unlock();
533
534 return f;
535}
536
b2552b8c 537static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8
VB		 538 bool *last, bool rtnl_held,
539 struct netlink_ext_ack *extack)
13fa876e 540{
e474619a 541 struct cls_fl_head *head = fl_head_dereference(tp);
c15ab236 542
b2552b8c
VB		 543 *last = false;
544
3d81e711
VB		 545 spin_lock(&tp->lock);
546 if (f->deleted) {
547 spin_unlock(&tp->lock);
b2552b8c 548 return -ENOENT;
3d81e711 549 }
b2552b8c
VB		 550
551 f->deleted = true;
552 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
553 f->mask->filter_ht_params);
9c160941 554 idr_remove(&head->handle_idr, f->handle);
13fa876e 555 list_del_rcu(&f->list);
3d81e711
VB		 556 spin_unlock(&tp->lock);
557
9994677c 558 *last = fl_mask_put(head, f->mask);
79685219 559 if (!tc_skip_hw(f->flags))
c24e43d8 560 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
13fa876e 561 tcf_unbind_filter(tp, &f->res);
06177558 562 __fl_put(f);
05cd271f 563
b2552b8c 564 return 0;
13fa876e
RD		 565}
566
d9363774
DB		 567static void fl_destroy_sleepable(struct work_struct *work)
568{
aaa908ff
CW		 569 struct cls_fl_head *head = container_of(to_rcu_work(work),
570 struct cls_fl_head,
571 rwork);
de9dc650
PB		 572
573 rhashtable_destroy(&head->ht);
d9363774
DB		 574 kfree(head);
575 module_put(THIS_MODULE);
576}
577
12db03b6
VB		 578static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
579 struct netlink_ext_ack *extack)
77b9900e 580{
e474619a 581 struct cls_fl_head *head = fl_head_dereference(tp);
05cd271f 582 struct fl_flow_mask *mask, *next_mask;
77b9900e 583 struct cls_fl_filter *f, *next;
b2552b8c 584 bool last;
77b9900e 585
05cd271f
PB		 586 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
587 list_for_each_entry_safe(f, next, &mask->filters, list) {
c24e43d8 588 __fl_delete(tp, f, &last, rtnl_held, extack);
b2552b8c 589 if (last)
05cd271f
PB		 590 break;
591 }
592 }
c15ab236 593 idr_destroy(&head->handle_idr);
d9363774
DB		 594
595 __module_get(THIS_MODULE);
aaa908ff 596 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
77b9900e
JP		 597}
598
06177558
VB		 599static void fl_put(struct tcf_proto *tp, void *arg)
600{
601 struct cls_fl_filter *f = arg;
602
603 __fl_put(f);
604}
605
8113c095 606static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e 607{
e474619a 608 struct cls_fl_head *head = fl_head_dereference(tp);
77b9900e 609
06177558 610 return __fl_get(head, handle);
77b9900e
JP		 611}
612
613static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
614 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
615 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
616 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
617 .len = IFNAMSIZ },
618 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
619 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
620 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
621 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
622 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
623 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
624 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
625 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
626 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
627 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
628 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
629 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
630 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
631 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
632 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
633 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 634 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
635 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 636 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
637 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
638 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 639 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
640 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
641 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
642 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
643 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
644 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
645 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
646 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
647 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 648 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
649 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
650 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
651 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 652 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
653 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
654 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
655 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 656 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
657 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
658 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
659 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 660 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
661 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 662 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
663 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
666 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
667 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
668 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
669 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 670 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
671 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
672 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
673 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
674 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
675 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
677 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
678 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
679 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 680 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
681 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
683 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
61aec25a 684 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
fdfc7dd6
JP		 685 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
686 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 687 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
688 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
689 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
d64efd09
JL		 691 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
692 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
693 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
0e2c17b6
OG		 694 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
695 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
696 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
697 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
0a6e7778
PJV		 698 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
699 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
1bcc51ac 700 [TCA_FLOWER_KEY_CT_STATE] =
701 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
702 [TCA_FLOWER_KEY_CT_STATE_MASK] =
703 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
e0ace68a
PB		 704 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
705 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
706 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
707 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
708 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
709 .len = 128 / BITS_PER_BYTE },
710 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
711 .len = 128 / BITS_PER_BYTE },
e2debf08 712 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
5923b8f7
AL		 713 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
714 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
715
0a6e7778
PJV		 716};
717
718static const struct nla_policy
719enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
d8f9dfae
XL		 720 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
721 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
0a6e7778 722 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
d8f9dfae 723 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
79b1011c 724 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
e3acda7a 725 [TCA_FLOWER_KEY_ENC_OPTS_GTP] = { .type = NLA_NESTED },
0a6e7778
PJV		 726};
727
728static const struct nla_policy
729geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
730 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
731 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
732 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
733 .len = 128 },
77b9900e
JP		 734};
735
d8f9dfae
XL		 736static const struct nla_policy
737vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
738 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
739};
740
79b1011c
XL		 741static const struct nla_policy
742erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
743 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
744 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
745 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
746 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
747};
748
e3acda7a
WD		 749static const struct nla_policy
750gtp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1] = {
751 [TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] = { .type = NLA_U8 },
752 [TCA_FLOWER_KEY_ENC_OPT_GTP_QFI] = { .type = NLA_U8 },
753};
754
61aec25a
GN		 755static const struct nla_policy
756mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
757 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
758 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
759 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
760 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
761 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
762};
763
77b9900e
JP		 764static void fl_set_key_val(struct nlattr **tb,
765 void *val, int val_type,
766 void *mask, int mask_type, int len)
767{
768 if (!tb[val_type])
769 return;
e0ace68a 770 nla_memcpy(val, tb[val_type], len);
77b9900e
JP		 771 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
772 memset(mask, 0xff, len);
773 else
e0ace68a 774 nla_memcpy(mask, tb[mask_type], len);
77b9900e
JP		 775}
776
5c72299f 777static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
bd7d4c12
GN		 778 struct fl_flow_key *mask,
779 struct netlink_ext_ack *extack)
5c72299f 780{
8ffb055b
YK		 781 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
782 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
783 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
784 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
785 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
786 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
787 fl_set_key_val(tb, &key->tp_range.tp_min.src,
788 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
789 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
790 fl_set_key_val(tb, &key->tp_range.tp_max.src,
791 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
792 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
793
bd7d4c12 794 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
6215afcb
VO		 795 ntohs(key->tp_range.tp_max.dst) <=
796 ntohs(key->tp_range.tp_min.dst)) {
bd7d4c12
GN		 797 NL_SET_ERR_MSG_ATTR(extack,
798 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
799 "Invalid destination port range (min must be strictly smaller than max)");
5c72299f 800 return -EINVAL;
bd7d4c12
GN		 801 }
802 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
6215afcb
VO		 803 ntohs(key->tp_range.tp_max.src) <=
804 ntohs(key->tp_range.tp_min.src)) {
bd7d4c12
GN		 805 NL_SET_ERR_MSG_ATTR(extack,
806 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
807 "Invalid source port range (min must be strictly smaller than max)");
808 return -EINVAL;
809 }
5c72299f
AN		 810
811 return 0;
812}
813
61aec25a
GN		 814static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
815 struct flow_dissector_key_mpls *key_val,
816 struct flow_dissector_key_mpls *key_mask,
817 struct netlink_ext_ack *extack)
818{
819 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
820 struct flow_dissector_mpls_lse *lse_mask;
821 struct flow_dissector_mpls_lse *lse_val;
822 u8 lse_index;
823 u8 depth;
824 int err;
825
826 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
827 mpls_stack_entry_policy, extack);
828 if (err < 0)
829 return err;
830
831 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
832 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
833 return -EINVAL;
834 }
835
836 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
837
838 /* LSE depth starts at 1, for consistency with terminology used by
839 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
840 */
841 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
842 NL_SET_ERR_MSG_ATTR(extack,
843 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
844 "Invalid MPLS depth");
845 return -EINVAL;
846 }
847 lse_index = depth - 1;
848
849 dissector_set_mpls_lse(key_val, lse_index);
850 dissector_set_mpls_lse(key_mask, lse_index);
851
852 lse_val = &key_val->ls[lse_index];
853 lse_mask = &key_mask->ls[lse_index];
854
855 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
856 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
857 lse_mask->mpls_ttl = MPLS_TTL_MASK;
858 }
859 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
860 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
861
862 if (bos & ~MPLS_BOS_MASK) {
863 NL_SET_ERR_MSG_ATTR(extack,
864 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
865 "Bottom Of Stack (BOS) must be 0 or 1");
866 return -EINVAL;
867 }
868 lse_val->mpls_bos = bos;
869 lse_mask->mpls_bos = MPLS_BOS_MASK;
870 }
871 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
872 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
873
874 if (tc & ~MPLS_TC_MASK) {
875 NL_SET_ERR_MSG_ATTR(extack,
876 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
877 "Traffic Class (TC) must be between 0 and 7");
878 return -EINVAL;
879 }
880 lse_val->mpls_tc = tc;
881 lse_mask->mpls_tc = MPLS_TC_MASK;
882 }
883 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
884 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
885
886 if (label & ~MPLS_LABEL_MASK) {
887 NL_SET_ERR_MSG_ATTR(extack,
888 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
889 "Label must be between 0 and 1048575");
890 return -EINVAL;
891 }
892 lse_val->mpls_label = label;
893 lse_mask->mpls_label = MPLS_LABEL_MASK;
894 }
895
896 return 0;
897}
898
899static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
900 struct flow_dissector_key_mpls *key_val,
901 struct flow_dissector_key_mpls *key_mask,
902 struct netlink_ext_ack *extack)
903{
904 struct nlattr *nla_lse;
905 int rem;
906 int err;
907
908 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
909 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
910 "NLA_F_NESTED is missing");
911 return -EINVAL;
912 }
913
914 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
915 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
916 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
917 "Invalid MPLS option type");
918 return -EINVAL;
919 }
920
921 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
922 if (err < 0)
923 return err;
924 }
925 if (rem) {
926 NL_SET_ERR_MSG(extack,
927 "Bytes leftover after parsing MPLS options");
928 return -EINVAL;
929 }
930
931 return 0;
932}
933
1a7fca63
BL		 934static int fl_set_key_mpls(struct nlattr **tb,
935 struct flow_dissector_key_mpls *key_val,
442f730e
GN		 936 struct flow_dissector_key_mpls *key_mask,
937 struct netlink_ext_ack *extack)
a577d8f7 938{
58cff782
GN		 939 struct flow_dissector_mpls_lse *lse_mask;
940 struct flow_dissector_mpls_lse *lse_val;
941
61aec25a
GN		 942 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
943 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
944 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
945 tb[TCA_FLOWER_KEY_MPLS_TC] ||
946 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
947 NL_SET_ERR_MSG_ATTR(extack,
948 tb[TCA_FLOWER_KEY_MPLS_OPTS],
949 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
950 return -EBADMSG;
951 }
952
953 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
954 key_val, key_mask, extack);
955 }
956
58cff782
GN		 957 lse_val = &key_val->ls[0];
958 lse_mask = &key_mask->ls[0];
959
a577d8f7 960 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
58cff782
GN		 961 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
962 lse_mask->mpls_ttl = MPLS_TTL_MASK;
963 dissector_set_mpls_lse(key_val, 0);
964 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 965 }
966 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 967 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
968
442f730e
GN		 969 if (bos & ~MPLS_BOS_MASK) {
970 NL_SET_ERR_MSG_ATTR(extack,
971 tb[TCA_FLOWER_KEY_MPLS_BOS],
972 "Bottom Of Stack (BOS) must be 0 or 1");
1a7fca63 973 return -EINVAL;
442f730e 974 }
58cff782
GN		 975 lse_val->mpls_bos = bos;
976 lse_mask->mpls_bos = MPLS_BOS_MASK;
977 dissector_set_mpls_lse(key_val, 0);
978 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 979 }
980 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 981 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
982
442f730e
GN		 983 if (tc & ~MPLS_TC_MASK) {
984 NL_SET_ERR_MSG_ATTR(extack,
985 tb[TCA_FLOWER_KEY_MPLS_TC],
986 "Traffic Class (TC) must be between 0 and 7");
1a7fca63 987 return -EINVAL;
442f730e 988 }
58cff782
GN		 989 lse_val->mpls_tc = tc;
990 lse_mask->mpls_tc = MPLS_TC_MASK;
991 dissector_set_mpls_lse(key_val, 0);
992 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 993 }
994 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 995 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
996
442f730e
GN		 997 if (label & ~MPLS_LABEL_MASK) {
998 NL_SET_ERR_MSG_ATTR(extack,
999 tb[TCA_FLOWER_KEY_MPLS_LABEL],
1000 "Label must be between 0 and 1048575");
1a7fca63 1001 return -EINVAL;
442f730e 1002 }
58cff782
GN		 1003 lse_val->mpls_label = label;
1004 lse_mask->mpls_label = MPLS_LABEL_MASK;
1005 dissector_set_mpls_lse(key_val, 0);
1006 dissector_set_mpls_lse(key_mask, 0);
a577d8f7 1007 }
1a7fca63 1008 return 0;
a577d8f7
BL		 1009}
1010
9399ae9a 1011static void fl_set_key_vlan(struct nlattr **tb,
aaab0834 1012 __be16 ethertype,
d64efd09 1013 int vlan_id_key, int vlan_prio_key,
2105f700 1014 int vlan_next_eth_type_key,
9399ae9a
HHZ		 1015 struct flow_dissector_key_vlan *key_val,
1016 struct flow_dissector_key_vlan *key_mask)
1017{
1018#define VLAN_PRIORITY_MASK 0x7
1019
d64efd09 1020 if (tb[vlan_id_key]) {
9399ae9a 1021 key_val->vlan_id =
d64efd09 1022 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
9399ae9a
HHZ		 1023 key_mask->vlan_id = VLAN_VID_MASK;
1024 }
d64efd09 1025 if (tb[vlan_prio_key]) {
9399ae9a 1026 key_val->vlan_priority =
d64efd09 1027 nla_get_u8(tb[vlan_prio_key]) &
9399ae9a
HHZ		 1028 VLAN_PRIORITY_MASK;
1029 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1030 }
aaab0834
JL		 1031 key_val->vlan_tpid = ethertype;
1032 key_mask->vlan_tpid = cpu_to_be16(~0);
2105f700
VB		 1033 if (tb[vlan_next_eth_type_key]) {
1034 key_val->vlan_eth_type =
1035 nla_get_be16(tb[vlan_next_eth_type_key]);
1036 key_mask->vlan_eth_type = cpu_to_be16(~0);
1037 }
9399ae9a
HHZ		 1038}
1039
faa3ffce
OG		 1040static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1041 u32 *dissector_key, u32 *dissector_mask,
1042 u32 flower_flag_bit, u32 dissector_flag_bit)
1043{
1044 if (flower_mask & flower_flag_bit) {
1045 *dissector_mask |= dissector_flag_bit;
1046 if (flower_key & flower_flag_bit)
1047 *dissector_key |= dissector_flag_bit;
1048 }
1049}
1050
e304e21a
GN		 1051static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1052 u32 *flags_mask, struct netlink_ext_ack *extack)
faa3ffce
OG		 1053{
1054 u32 key, mask;
1055
d9724772 1056 /* mask is mandatory for flags */
e304e21a
GN		 1057 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1058 NL_SET_ERR_MSG(extack, "Missing flags mask");
d9724772 1059 return -EINVAL;
e304e21a 1060 }
faa3ffce 1061
abee13f5
VO		 1062 key = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS]));
1063 mask = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 1064
1065 *flags_key = 0;
1066 *flags_mask = 0;
1067
1068 fl_set_key_flag(key, mask, flags_key, flags_mask,
1069 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 1070 fl_set_key_flag(key, mask, flags_key, flags_mask,
1071 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1072 FLOW_DIS_FIRST_FRAG);
d9724772
OG		 1073
1074 return 0;
faa3ffce
OG		 1075}
1076
0e2c17b6 1077static void fl_set_key_ip(struct nlattr **tb, bool encap,
4d80cc0a
OG		 1078 struct flow_dissector_key_ip *key,
1079 struct flow_dissector_key_ip *mask)
1080{
0e2c17b6
OG		 1081 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1082 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1083 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1084 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
4d80cc0a 1085
0e2c17b6
OG		 1086 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1087 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
4d80cc0a
OG		 1088}
1089
0a6e7778
PJV		 1090static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1091 int depth, int option_len,
1092 struct netlink_ext_ack *extack)
1093{
1094 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1095 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1096 struct geneve_opt *opt;
1097 int err, data_len = 0;
1098
1099 if (option_len > sizeof(struct geneve_opt))
1100 data_len = option_len - sizeof(struct geneve_opt);
1101
1102 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1103 memset(opt, 0xff, option_len);
1104 opt->length = data_len / 4;
1105 opt->r1 = 0;
1106 opt->r2 = 0;
1107 opt->r3 = 0;
1108
1109 /* If no mask has been prodived we assume an exact match. */
1110 if (!depth)
1111 return sizeof(struct geneve_opt) + data_len;
1112
1113 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1114 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1115 return -EINVAL;
1116 }
1117
8cb08174
JB		 1118 err = nla_parse_nested_deprecated(tb,
1119 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1120 nla, geneve_opt_policy, extack);
0a6e7778
PJV		 1121 if (err < 0)
1122 return err;
1123
1124 /* We are not allowed to omit any of CLASS, TYPE or DATA
1125 * fields from the key.
1126 */
1127 if (!option_len &&
1128 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1129 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1130 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1131 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1132 return -EINVAL;
1133 }
1134
1135 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1136 * for the mask.
1137 */
1138 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1139 int new_len = key->enc_opts.len;
1140
1141 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1142 data_len = nla_len(data);
1143 if (data_len < 4) {
1144 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1145 return -ERANGE;
1146 }
1147 if (data_len % 4) {
1148 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1149 return -ERANGE;
1150 }
1151
1152 new_len += sizeof(struct geneve_opt) + data_len;
1153 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1154 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1155 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1156 return -ERANGE;
1157 }
1158 opt->length = data_len / 4;
1159 memcpy(opt->opt_data, nla_data(data), data_len);
1160 }
1161
1162 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1163 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1164 opt->opt_class = nla_get_be16(class);
1165 }
1166
1167 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1168 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1169 opt->type = nla_get_u8(type);
1170 }
1171
1172 return sizeof(struct geneve_opt) + data_len;
1173}
1174
d8f9dfae
XL		 1175static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1176 int depth, int option_len,
1177 struct netlink_ext_ack *extack)
1178{
1179 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1180 struct vxlan_metadata *md;
1181 int err;
1182
1183 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1184 memset(md, 0xff, sizeof(*md));
1185
1186 if (!depth)
1187 return sizeof(*md);
1188
1189 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1190 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1191 return -EINVAL;
1192 }
1193
1194 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1195 vxlan_opt_policy, extack);
1196 if (err < 0)
1197 return err;
1198
1199 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1200 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1201 return -EINVAL;
1202 }
1203
13e6ce98 1204 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
d8f9dfae 1205 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
13e6ce98
XL		 1206 md->gbp &= VXLAN_GBP_MASK;
1207 }
d8f9dfae
XL		 1208
1209 return sizeof(*md);
1210}
1211
79b1011c
XL		 1212static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1213 int depth, int option_len,
1214 struct netlink_ext_ack *extack)
1215{
1216 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1217 struct erspan_metadata *md;
1218 int err;
1219
1220 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1221 memset(md, 0xff, sizeof(*md));
1222 md->version = 1;
1223
1224 if (!depth)
1225 return sizeof(*md);
1226
1227 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1228 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1229 return -EINVAL;
1230 }
1231
1232 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1233 erspan_opt_policy, extack);
1234 if (err < 0)
1235 return err;
1236
1237 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1238 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1239 return -EINVAL;
1240 }
1241
1242 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1243 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1244
1245 if (md->version == 1) {
1246 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1247 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1248 return -EINVAL;
1249 }
1250 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1251 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
8e1b3ac4 1252 memset(&md->u, 0x00, sizeof(md->u));
79b1011c
XL		 1253 md->u.index = nla_get_be32(nla);
1254 }
1255 } else if (md->version == 2) {
1256 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1257 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1258 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1259 return -EINVAL;
1260 }
1261 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1262 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1263 md->u.md2.dir = nla_get_u8(nla);
1264 }
1265 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1266 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1267 set_hwid(&md->u.md2, nla_get_u8(nla));
1268 }
1269 } else {
1270 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1271 return -EINVAL;
1272 }
1273
1274 return sizeof(*md);
1275}
1276
e3acda7a
WD		 1277static int fl_set_gtp_opt(const struct nlattr *nla, struct fl_flow_key *key,
1278 int depth, int option_len,
1279 struct netlink_ext_ack *extack)
1280{
1281 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1];
1282 struct gtp_pdu_session_info *sinfo;
1283 u8 len = key->enc_opts.len;
1284 int err;
1285
1286 sinfo = (struct gtp_pdu_session_info *)&key->enc_opts.data[len];
1287 memset(sinfo, 0xff, option_len);
1288
1289 if (!depth)
1290 return sizeof(*sinfo);
1291
1292 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GTP) {
1293 NL_SET_ERR_MSG_MOD(extack, "Non-gtp option type for mask");
1294 return -EINVAL;
1295 }
1296
1297 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GTP_MAX, nla,
1298 gtp_opt_policy, extack);
1299 if (err < 0)
1300 return err;
1301
1302 if (!option_len &&
1303 (!tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] ||
1304 !tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])) {
1305 NL_SET_ERR_MSG_MOD(extack,
1306 "Missing tunnel key gtp option pdu type or qfi");
1307 return -EINVAL;
1308 }
1309
1310 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE])
1311 sinfo->pdu_type =
1312 nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE]);
1313
1314 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])
1315 sinfo->qfi = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI]);
1316
1317 return sizeof(*sinfo);
1318}
1319
0a6e7778
PJV		 1320static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1321 struct fl_flow_key *mask,
1322 struct netlink_ext_ack *extack)
1323{
1324 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
63c82997
JK		 1325 int err, option_len, key_depth, msk_depth = 0;
1326
8cb08174
JB		 1327 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1328 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1329 enc_opts_policy, extack);
63c82997
JK		 1330 if (err)
1331 return err;
0a6e7778
PJV		 1332
1333 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1334
1335 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
8cb08174
JB		 1336 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1337 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1338 enc_opts_policy, extack);
63c82997
JK		 1339 if (err)
1340 return err;
1341
0a6e7778
PJV		 1342 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1343 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
c96adff9
CW		 1344 if (!nla_ok(nla_opt_msk, msk_depth)) {
1345 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1346 return -EINVAL;
1347 }
0a6e7778
PJV		 1348 }
1349
1350 nla_for_each_attr(nla_opt_key, nla_enc_key,
1351 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1352 switch (nla_type(nla_opt_key)) {
1353 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
d8f9dfae
XL		 1354 if (key->enc_opts.dst_opt_type &&
1355 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1356 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1357 return -EINVAL;
1358 }
0a6e7778
PJV		 1359 option_len = 0;
1360 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1361 option_len = fl_set_geneve_opt(nla_opt_key, key,
1362 key_depth, option_len,
1363 extack);
1364 if (option_len < 0)
1365 return option_len;
1366
1367 key->enc_opts.len += option_len;
1368 /* At the same time we need to parse through the mask
1369 * in order to verify exact and mask attribute lengths.
1370 */
1371 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1372 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1373 msk_depth, option_len,
1374 extack);
1375 if (option_len < 0)
1376 return option_len;
1377
1378 mask->enc_opts.len += option_len;
1379 if (key->enc_opts.len != mask->enc_opts.len) {
1380 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1381 return -EINVAL;
1382 }
d8f9dfae
XL		 1383 break;
1384 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1385 if (key->enc_opts.dst_opt_type) {
1386 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1387 return -EINVAL;
1388 }
1389 option_len = 0;
1390 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1391 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1392 key_depth, option_len,
1393 extack);
1394 if (option_len < 0)
1395 return option_len;
1396
1397 key->enc_opts.len += option_len;
1398 /* At the same time we need to parse through the mask
1399 * in order to verify exact and mask attribute lengths.
1400 */
1401 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1402 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1403 msk_depth, option_len,
1404 extack);
1405 if (option_len < 0)
1406 return option_len;
1407
1408 mask->enc_opts.len += option_len;
1409 if (key->enc_opts.len != mask->enc_opts.len) {
1410 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1411 return -EINVAL;
1412 }
79b1011c
XL		 1413 break;
1414 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1415 if (key->enc_opts.dst_opt_type) {
1416 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1417 return -EINVAL;
1418 }
1419 option_len = 0;
1420 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1421 option_len = fl_set_erspan_opt(nla_opt_key, key,
1422 key_depth, option_len,
1423 extack);
1424 if (option_len < 0)
1425 return option_len;
1426
1427 key->enc_opts.len += option_len;
1428 /* At the same time we need to parse through the mask
1429 * in order to verify exact and mask attribute lengths.
1430 */
1431 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1432 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1433 msk_depth, option_len,
1434 extack);
1435 if (option_len < 0)
1436 return option_len;
1437
1438 mask->enc_opts.len += option_len;
1439 if (key->enc_opts.len != mask->enc_opts.len) {
1440 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1441 return -EINVAL;
1442 }
0a6e7778 1443 break;
e3acda7a
WD		 1444 case TCA_FLOWER_KEY_ENC_OPTS_GTP:
1445 if (key->enc_opts.dst_opt_type) {
1446 NL_SET_ERR_MSG_MOD(extack,
1447 "Duplicate type for gtp options");
1448 return -EINVAL;
1449 }
1450 option_len = 0;
1451 key->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1452 option_len = fl_set_gtp_opt(nla_opt_key, key,
1453 key_depth, option_len,
1454 extack);
1455 if (option_len < 0)
1456 return option_len;
1457
1458 key->enc_opts.len += option_len;
1459 /* At the same time we need to parse through the mask
1460 * in order to verify exact and mask attribute lengths.
1461 */
1462 mask->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1463 option_len = fl_set_gtp_opt(nla_opt_msk, mask,
1464 msk_depth, option_len,
1465 extack);
1466 if (option_len < 0)
1467 return option_len;
1468
1469 mask->enc_opts.len += option_len;
1470 if (key->enc_opts.len != mask->enc_opts.len) {
1471 NL_SET_ERR_MSG_MOD(extack,
1472 "Key and mask miss aligned");
1473 return -EINVAL;
1474 }
1475 break;
0a6e7778
PJV		 1476 default:
1477 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1478 return -EINVAL;
1479 }
c96adff9
CW		 1480
1481 if (!msk_depth)
1482 continue;
1483
1484 if (!nla_ok(nla_opt_msk, msk_depth)) {
1485 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1486 return -EINVAL;
1487 }
1488 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
0a6e7778
PJV		 1489 }
1490
1491 return 0;
1492}
1493
1bcc51ac 1494static int fl_validate_ct_state(u16 state, struct nlattr *tb,
1495 struct netlink_ext_ack *extack)
1496{
1497 if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
1498 NL_SET_ERR_MSG_ATTR(extack, tb,
1499 "no trk, so no other flag can be set");
1500 return -EINVAL;
1501 }
1502
1503 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1504 state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
1505 NL_SET_ERR_MSG_ATTR(extack, tb,
1506 "new and est are mutually exclusive");
1507 return -EINVAL;
1508 }
1509
3aed8b63 1510 if (state & TCA_FLOWER_KEY_CT_FLAGS_INVALID &&
1511 state & ~(TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
1512 TCA_FLOWER_KEY_CT_FLAGS_INVALID)) {
1513 NL_SET_ERR_MSG_ATTR(extack, tb,
1514 "when inv is set, only trk may be set");
1515 return -EINVAL;
1516 }
1517
1518 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1519 state & TCA_FLOWER_KEY_CT_FLAGS_REPLY) {
1520 NL_SET_ERR_MSG_ATTR(extack, tb,
1521 "new and rpl are mutually exclusive");
1522 return -EINVAL;
1523 }
1524
1bcc51ac 1525 return 0;
1526}
1527
e0ace68a
PB		 1528static int fl_set_key_ct(struct nlattr **tb,
1529 struct flow_dissector_key_ct *key,
1530 struct flow_dissector_key_ct *mask,
1531 struct netlink_ext_ack *extack)
1532{
1533 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1bcc51ac 1534 int err;
1535
e0ace68a
PB		 1536 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1537 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1538 return -EOPNOTSUPP;
1539 }
1540 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1541 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1542 sizeof(key->ct_state));
1bcc51ac 1543
afa536d8 1544 err = fl_validate_ct_state(key->ct_state & mask->ct_state,
1bcc51ac 1545 tb[TCA_FLOWER_KEY_CT_STATE_MASK],
1546 extack);
1547 if (err)
1548 return err;
1549
e0ace68a
PB		 1550 }
1551 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1552 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1553 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1554 return -EOPNOTSUPP;
1555 }
1556 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1557 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1558 sizeof(key->ct_zone));
1559 }
1560 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1561 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1562 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1563 return -EOPNOTSUPP;
1564 }
1565 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1566 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1567 sizeof(key->ct_mark));
1568 }
1569 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1570 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1571 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1572 return -EOPNOTSUPP;
1573 }
1574 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1575 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1576 sizeof(key->ct_labels));
1577 }
1578
1579 return 0;
1580}
1581
77b9900e 1582static int fl_set_key(struct net *net, struct nlattr **tb,
1057c55f
AA		 1583 struct fl_flow_key *key, struct fl_flow_key *mask,
1584 struct netlink_ext_ack *extack)
77b9900e 1585{
9399ae9a 1586 __be16 ethertype;
d9724772 1587 int ret = 0;
a5148626 1588
77b9900e 1589 if (tb[TCA_FLOWER_INDEV]) {
1057c55f 1590 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
77b9900e
JP		 1591 if (err < 0)
1592 return err;
8212ed77
JP		 1593 key->meta.ingress_ifindex = err;
1594 mask->meta.ingress_ifindex = 0xffffffff;
77b9900e
JP		 1595 }
1596
1597 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1598 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1599 sizeof(key->eth.dst));
1600 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1601 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1602 sizeof(key->eth.src));
66530bdf 1603
0b498a52 1604 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 1605 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1606
aaab0834 1607 if (eth_type_vlan(ethertype)) {
d64efd09 1608 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
2105f700
VB		 1609 TCA_FLOWER_KEY_VLAN_PRIO,
1610 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1611 &key->vlan, &mask->vlan);
d64efd09 1612
5e9a0fe4
JL		 1613 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1614 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1615 if (eth_type_vlan(ethertype)) {
1616 fl_set_key_vlan(tb, ethertype,
1617 TCA_FLOWER_KEY_CVLAN_ID,
1618 TCA_FLOWER_KEY_CVLAN_PRIO,
2105f700 1619 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
5e9a0fe4
JL		 1620 &key->cvlan, &mask->cvlan);
1621 fl_set_key_val(tb, &key->basic.n_proto,
1622 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1623 &mask->basic.n_proto,
1624 TCA_FLOWER_UNSPEC,
1625 sizeof(key->basic.n_proto));
1626 } else {
1627 key->basic.n_proto = ethertype;
1628 mask->basic.n_proto = cpu_to_be16(~0);
1629 }
d64efd09 1630 }
0b498a52
AB		 1631 } else {
1632 key->basic.n_proto = ethertype;
1633 mask->basic.n_proto = cpu_to_be16(~0);
1634 }
9399ae9a 1635 }
66530bdf 1636
77b9900e
JP		 1637 if (key->basic.n_proto == htons(ETH_P_IP) ||
1638 key->basic.n_proto == htons(ETH_P_IPV6)) {
1639 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1640 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1641 sizeof(key->basic.ip_proto));
0e2c17b6 1642 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
77b9900e 1643 }
66530bdf
JHS		 1644
1645 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1646 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1647 mask->control.addr_type = ~0;
77b9900e
JP		 1648 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1649 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1650 sizeof(key->ipv4.src));
1651 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1652 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1653 sizeof(key->ipv4.dst));
66530bdf
JHS		 1654 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1655 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1656 mask->control.addr_type = ~0;
77b9900e
JP		 1657 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1658 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1659 sizeof(key->ipv6.src));
1660 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1661 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1662 sizeof(key->ipv6.dst));
1663 }
66530bdf 1664
77b9900e
JP		 1665 if (key->basic.ip_proto == IPPROTO_TCP) {
1666 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1667 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1668 sizeof(key->tp.src));
1669 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1670 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 1671 sizeof(key->tp.dst));
fdfc7dd6
JP		 1672 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1673 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1674 sizeof(key->tcp.flags));
77b9900e
JP		 1675 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1676 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1677 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1678 sizeof(key->tp.src));
1679 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1680 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 1681 sizeof(key->tp.dst));
5976c5f4
SH		 1682 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1683 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1684 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1685 sizeof(key->tp.src));
1686 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1687 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1688 sizeof(key->tp.dst));
7b684884
SH		 1689 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1690 key->basic.ip_proto == IPPROTO_ICMP) {
1691 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1692 &mask->icmp.type,
1693 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1694 sizeof(key->icmp.type));
1695 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1696 &mask->icmp.code,
1697 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1698 sizeof(key->icmp.code));
1699 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1700 key->basic.ip_proto == IPPROTO_ICMPV6) {
1701 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1702 &mask->icmp.type,
1703 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1704 sizeof(key->icmp.type));
040587af 1705 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 1706 &mask->icmp.code,
040587af 1707 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 1708 sizeof(key->icmp.code));
a577d8f7
BL		 1709 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1710 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
442f730e 1711 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1a7fca63
BL		 1712 if (ret)
1713 return ret;
99d31326
SH		 1714 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1715 key->basic.n_proto == htons(ETH_P_RARP)) {
1716 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1717 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1718 sizeof(key->arp.sip));
1719 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1720 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1721 sizeof(key->arp.tip));
1722 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1723 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1724 sizeof(key->arp.op));
1725 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1726 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1727 sizeof(key->arp.sha));
1728 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1729 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1730 sizeof(key->arp.tha));
77b9900e
JP		 1731 }
1732
5c72299f
AN		 1733 if (key->basic.ip_proto == IPPROTO_TCP ||
1734 key->basic.ip_proto == IPPROTO_UDP ||
1735 key->basic.ip_proto == IPPROTO_SCTP) {
bd7d4c12 1736 ret = fl_set_key_port_range(tb, key, mask, extack);
5c72299f
AN		 1737 if (ret)
1738 return ret;
1739 }
1740
bc3103f1
AV		 1741 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1742 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1743 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1744 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1745 fl_set_key_val(tb, &key->enc_ipv4.src,
1746 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1747 &mask->enc_ipv4.src,
1748 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1749 sizeof(key->enc_ipv4.src));
1750 fl_set_key_val(tb, &key->enc_ipv4.dst,
1751 TCA_FLOWER_KEY_ENC_IPV4_DST,
1752 &mask->enc_ipv4.dst,
1753 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1754 sizeof(key->enc_ipv4.dst));
1755 }
1756
1757 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1758 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1759 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1760 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1761 fl_set_key_val(tb, &key->enc_ipv6.src,
1762 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1763 &mask->enc_ipv6.src,
1764 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1765 sizeof(key->enc_ipv6.src));
1766 fl_set_key_val(tb, &key->enc_ipv6.dst,
1767 TCA_FLOWER_KEY_ENC_IPV6_DST,
1768 &mask->enc_ipv6.dst,
1769 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1770 sizeof(key->enc_ipv6.dst));
1771 }
1772
1773 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1774 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 1775 sizeof(key->enc_key_id.keyid));
1776
f4d997fd
HHZ		 1777 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1778 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1779 sizeof(key->enc_tp.src));
1780
1781 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1782 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1783 sizeof(key->enc_tp.dst));
1784
0e2c17b6
OG		 1785 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1786
5923b8f7
AL		 1787 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1788 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1789 sizeof(key->hash.hash));
1790
0a6e7778
PJV		 1791 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1792 ret = fl_set_enc_opt(tb, key, mask, extack);
1793 if (ret)
1794 return ret;
1795 }
1796
e0ace68a
PB		 1797 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1798 if (ret)
1799 return ret;
1800
d9724772 1801 if (tb[TCA_FLOWER_KEY_FLAGS])
e304e21a
GN		 1802 ret = fl_set_key_flags(tb, &key->control.flags,
1803 &mask->control.flags, extack);
faa3ffce 1804
d9724772 1805 return ret;
77b9900e
JP		 1806}
1807
05cd271f
PB		 1808static void fl_mask_copy(struct fl_flow_mask *dst,
1809 struct fl_flow_mask *src)
77b9900e 1810{
05cd271f
PB		 1811 const void *psrc = fl_key_get_start(&src->key, src);
1812 void *pdst = fl_key_get_start(&dst->key, src);
77b9900e 1813
05cd271f
PB		 1814 memcpy(pdst, psrc, fl_mask_range(src));
1815 dst->range = src->range;
77b9900e
JP		 1816}
1817
1818static const struct rhashtable_params fl_ht_params = {
1819 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1820 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1821 .automatic_shrinking = true,
1822};
1823
05cd271f 1824static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
77b9900e 1825{
05cd271f
PB		 1826 mask->filter_ht_params = fl_ht_params;
1827 mask->filter_ht_params.key_len = fl_mask_range(mask);
1828 mask->filter_ht_params.key_offset += mask->range.start;
77b9900e 1829
05cd271f 1830 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
77b9900e
JP		 1831}
1832
1833#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
c593642c 1834#define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
77b9900e 1835
339ba878
HHZ		 1836#define FL_KEY_IS_MASKED(mask, member) \
1837 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1838 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 1839
1840#define FL_KEY_SET(keys, cnt, id, member) \
1841 do { \
1842 keys[cnt].key_id = id; \
1843 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1844 cnt++; \
1845 } while(0);
1846
339ba878 1847#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 1848 do { \
339ba878 1849 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 1850 FL_KEY_SET(keys, cnt, id, member); \
1851 } while(0);
1852
33fb5cba
JP		 1853static void fl_init_dissector(struct flow_dissector *dissector,
1854 struct fl_flow_key *mask)
77b9900e
JP		 1855{
1856 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1857 size_t cnt = 0;
1858
8212ed77
JP		 1859 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1860 FLOW_DISSECTOR_KEY_META, meta);
42aecaa9 1861 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 1862 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
33fb5cba 1863 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1864 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
33fb5cba 1865 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1866 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
33fb5cba 1867 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1868 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
8ffb055b
YK		 1869 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1870 FLOW_DISSECTOR_KEY_PORTS, tp);
1871 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1872 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
33fb5cba 1873 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
4d80cc0a 1874 FLOW_DISSECTOR_KEY_IP, ip);
33fb5cba 1875 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
fdfc7dd6 1876 FLOW_DISSECTOR_KEY_TCP, tcp);
33fb5cba 1877 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
7b684884 1878 FLOW_DISSECTOR_KEY_ICMP, icmp);
33fb5cba 1879 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
99d31326 1880 FLOW_DISSECTOR_KEY_ARP, arp);
33fb5cba 1881 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
a577d8f7 1882 FLOW_DISSECTOR_KEY_MPLS, mpls);
33fb5cba 1883 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
9399ae9a 1884 FLOW_DISSECTOR_KEY_VLAN, vlan);
33fb5cba 1885 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
d64efd09 1886 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
33fb5cba 1887 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1888 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
33fb5cba 1889 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1890 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
33fb5cba 1891 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1892 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
33fb5cba
JP		 1893 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1894 FL_KEY_IS_MASKED(mask, enc_ipv6))
519d1052
HHZ		 1895 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1896 enc_control);
33fb5cba 1897 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
f4d997fd 1898 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
33fb5cba 1899 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
0e2c17b6 1900 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
0a6e7778
PJV		 1901 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1902 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
e0ace68a
PB		 1903 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1904 FLOW_DISSECTOR_KEY_CT, ct);
5923b8f7
AL		 1905 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1906 FLOW_DISSECTOR_KEY_HASH, hash);
77b9900e 1907
33fb5cba 1908 skb_flow_dissector_init(dissector, keys, cnt);
05cd271f
PB		 1909}
1910
1911static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1912 struct fl_flow_mask *mask)
1913{
1914 struct fl_flow_mask *newmask;
1915 int err;
1916
1917 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1918 if (!newmask)
1919 return ERR_PTR(-ENOMEM);
1920
1921 fl_mask_copy(newmask, mask);
1922
8ffb055b
YK		 1923 if ((newmask->key.tp_range.tp_min.dst &&
1924 newmask->key.tp_range.tp_max.dst) ||
1925 (newmask->key.tp_range.tp_min.src &&
1926 newmask->key.tp_range.tp_max.src))
5c72299f
AN		 1927 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1928
05cd271f
PB		 1929 err = fl_init_mask_hashtable(newmask);
1930 if (err)
1931 goto errout_free;
1932
33fb5cba 1933 fl_init_dissector(&newmask->dissector, &newmask->key);
05cd271f
PB		 1934
1935 INIT_LIST_HEAD_RCU(&newmask->filters);
1936
f48ef4d5 1937 refcount_set(&newmask->refcnt, 1);
195c234d
VB		 1938 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1939 &newmask->ht_node, mask_ht_params);
05cd271f
PB		 1940 if (err)
1941 goto errout_destroy;
1942
259e60f9 1943 spin_lock(&head->masks_lock);
05cd271f 1944 list_add_tail_rcu(&newmask->list, &head->masks);
259e60f9 1945 spin_unlock(&head->masks_lock);
05cd271f
PB		 1946
1947 return newmask;
1948
1949errout_destroy:
1950 rhashtable_destroy(&newmask->ht);
1951errout_free:
1952 kfree(newmask);
1953
1954 return ERR_PTR(err);
77b9900e
JP		 1955}
1956
1957static int fl_check_assign_mask(struct cls_fl_head *head,
05cd271f
PB		 1958 struct cls_fl_filter *fnew,
1959 struct cls_fl_filter *fold,
77b9900e
JP		 1960 struct fl_flow_mask *mask)
1961{
05cd271f 1962 struct fl_flow_mask *newmask;
f48ef4d5 1963 int ret = 0;
77b9900e 1964
f48ef4d5 1965 rcu_read_lock();
195c234d
VB		 1966
1967 /* Insert mask as temporary node to prevent concurrent creation of mask
1968 * with same key. Any concurrent lookups with same key will return
99815f50 1969 * -EAGAIN because mask's refcnt is zero.
195c234d
VB		 1970 */
1971 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1972 &mask->ht_node,
1973 mask_ht_params);
05cd271f 1974 if (!fnew->mask) {
f48ef4d5
VB		 1975 rcu_read_unlock();
1976
195c234d
VB		 1977 if (fold) {
1978 ret = -EINVAL;
1979 goto errout_cleanup;
1980 }
77b9900e 1981
05cd271f 1982 newmask = fl_create_new_mask(head, mask);
195c234d
VB		 1983 if (IS_ERR(newmask)) {
1984 ret = PTR_ERR(newmask);
1985 goto errout_cleanup;
1986 }
77b9900e 1987
05cd271f 1988 fnew->mask = newmask;
f48ef4d5 1989 return 0;
195c234d
VB		 1990 } else if (IS_ERR(fnew->mask)) {
1991 ret = PTR_ERR(fnew->mask);
f6521c58 1992 } else if (fold && fold->mask != fnew->mask) {
f48ef4d5
VB		 1993 ret = -EINVAL;
1994 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1995 /* Mask was deleted concurrently, try again */
1996 ret = -EAGAIN;
05cd271f 1997 }
f48ef4d5
VB		 1998 rcu_read_unlock();
1999 return ret;
195c234d
VB		 2000
2001errout_cleanup:
2002 rhashtable_remove_fast(&head->ht, &mask->ht_node,
2003 mask_ht_params);
195c234d 2004 return ret;
77b9900e
JP		 2005}
2006
2007static int fl_set_parms(struct net *net, struct tcf_proto *tp,
2008 struct cls_fl_filter *f, struct fl_flow_mask *mask,
2009 unsigned long base, struct nlattr **tb,
695176bf 2010 struct nlattr *est,
c86e0209
BZ		 2011 struct fl_flow_tmplt *tmplt,
2012 u32 flags, u32 fl_flags,
50a56190 2013 struct netlink_ext_ack *extack)
77b9900e 2014{
77b9900e
JP		 2015 int err;
2016
c86e0209
BZ		 2017 err = tcf_exts_validate_ex(net, tp, tb, est, &f->exts, flags,
2018 fl_flags, extack);
77b9900e
JP		 2019 if (err < 0)
2020 return err;
2021
2022 if (tb[TCA_FLOWER_CLASSID]) {
2023 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
695176bf 2024 if (flags & TCA_ACT_FLAGS_NO_RTNL)
c24e43d8 2025 rtnl_lock();
77b9900e 2026 tcf_bind_filter(tp, &f->res, base);
695176bf 2027 if (flags & TCA_ACT_FLAGS_NO_RTNL)
c24e43d8 2028 rtnl_unlock();
77b9900e
JP		 2029 }
2030
1057c55f 2031 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
77b9900e 2032 if (err)
45507529 2033 return err;
77b9900e
JP		 2034
2035 fl_mask_update_range(mask);
2036 fl_set_masked_key(&f->mkey, &f->key, mask);
2037
b95ec7eb
JP		 2038 if (!fl_mask_fits_tmplt(tmplt, mask)) {
2039 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
2040 return -EINVAL;
2041 }
2042
77b9900e 2043 return 0;
77b9900e
JP		 2044}
2045
1f17f774
VB		 2046static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
2047 struct cls_fl_filter *fold,
2048 bool *in_ht)
2049{
2050 struct fl_flow_mask *mask = fnew->mask;
2051 int err;
2052
9e35552a
VB		 2053 err = rhashtable_lookup_insert_fast(&mask->ht,
2054 &fnew->ht_node,
2055 mask->filter_ht_params);
1f17f774
VB		 2056 if (err) {
2057 *in_ht = false;
2058 /* It is okay if filter with same key exists when
2059 * overwriting.
2060 */
2061 return fold && err == -EEXIST ? 0 : err;
2062 }
2063
2064 *in_ht = true;
2065 return 0;
2066}
2067
77b9900e
JP		 2068static int fl_change(struct net *net, struct sk_buff *in_skb,
2069 struct tcf_proto *tp, unsigned long base,
2070 u32 handle, struct nlattr **tca,
695176bf 2071 void **arg, u32 flags,
12db03b6 2072 struct netlink_ext_ack *extack)
77b9900e 2073{
e474619a 2074 struct cls_fl_head *head = fl_head_dereference(tp);
695176bf 2075 bool rtnl_held = !(flags & TCA_ACT_FLAGS_NO_RTNL);
8113c095 2076 struct cls_fl_filter *fold = *arg;
77b9900e 2077 struct cls_fl_filter *fnew;
2cddd201 2078 struct fl_flow_mask *mask;
39b7b6a6 2079 struct nlattr **tb;
1f17f774 2080 bool in_ht;
77b9900e
JP		 2081 int err;
2082
06177558
VB		 2083 if (!tca[TCA_OPTIONS]) {
2084 err = -EINVAL;
2085 goto errout_fold;
2086 }
77b9900e 2087
2cddd201 2088 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
06177558
VB		 2089 if (!mask) {
2090 err = -ENOBUFS;
2091 goto errout_fold;
2092 }
39b7b6a6 2093
2cddd201
IV		 2094 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2095 if (!tb) {
2096 err = -ENOBUFS;
2097 goto errout_mask_alloc;
2098 }
2099
8cb08174
JB		 2100 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2101 tca[TCA_OPTIONS], fl_policy, NULL);
77b9900e 2102 if (err < 0)
39b7b6a6 2103 goto errout_tb;
77b9900e 2104
39b7b6a6
AB		 2105 if (fold && handle && fold->handle != handle) {
2106 err = -EINVAL;
2107 goto errout_tb;
2108 }
77b9900e
JP		 2109
2110 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 2111 if (!fnew) {
2112 err = -ENOBUFS;
2113 goto errout_tb;
2114 }
c049d56e 2115 INIT_LIST_HEAD(&fnew->hw_list);
06177558 2116 refcount_set(&fnew->refcnt, 1);
77b9900e 2117
14215108 2118 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
b9a24bb7
WC		 2119 if (err < 0)
2120 goto errout;
77b9900e 2121
e69985c6
AV		 2122 if (tb[TCA_FLOWER_FLAGS]) {
2123 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
2124
2125 if (!tc_flags_valid(fnew->flags)) {
2126 err = -EINVAL;
ecb3dea4 2127 goto errout;
e69985c6
AV		 2128 }
2129 }
5b33f488 2130
695176bf 2131 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE],
c86e0209
BZ		 2132 tp->chain->tmplt_priv, flags, fnew->flags,
2133 extack);
77b9900e 2134 if (err)
ecb3dea4 2135 goto errout;
77b9900e 2136
2cddd201 2137 err = fl_check_assign_mask(head, fnew, fold, mask);
77b9900e 2138 if (err)
ecb3dea4
VB		 2139 goto errout;
2140
1f17f774
VB		 2141 err = fl_ht_insert_unique(fnew, fold, &in_ht);
2142 if (err)
2143 goto errout_mask;
2144
79685219 2145 if (!tc_skip_hw(fnew->flags)) {
c24e43d8 2146 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
79685219 2147 if (err)
1f17f774 2148 goto errout_ht;
79685219 2149 }
5b33f488 2150
55593960
OG		 2151 if (!tc_in_hw(fnew->flags))
2152 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2153
3d81e711
VB		 2154 spin_lock(&tp->lock);
2155
272ffaad
VB		 2156 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2157 * proto again or create new one, if necessary.
2158 */
2159 if (tp->deleting) {
2160 err = -EAGAIN;
2161 goto errout_hw;
2162 }
2163
5b33f488 2164 if (fold) {
b2552b8c
VB		 2165 /* Fold filter was deleted concurrently. Retry lookup. */
2166 if (fold->deleted) {
2167 err = -EAGAIN;
2168 goto errout_hw;
2169 }
2170
620da486
VB		 2171 fnew->handle = handle;
2172
1f17f774
VB		 2173 if (!in_ht) {
2174 struct rhashtable_params params =
2175 fnew->mask->filter_ht_params;
2176
2177 err = rhashtable_insert_fast(&fnew->mask->ht,
2178 &fnew->ht_node,
2179 params);
2180 if (err)
2181 goto errout_hw;
2182 in_ht = true;
2183 }
620da486 2184
c049d56e 2185 refcount_inc(&fnew->refcnt);
599d2570
RD		 2186 rhashtable_remove_fast(&fold->mask->ht,
2187 &fold->ht_node,
2188 fold->mask->filter_ht_params);
234a4624 2189 idr_replace(&head->handle_idr, fnew, fnew->handle);
ff3532f2 2190 list_replace_rcu(&fold->list, &fnew->list);
b2552b8c 2191 fold->deleted = true;
620da486 2192
3d81e711
VB		 2193 spin_unlock(&tp->lock);
2194
9994677c 2195 fl_mask_put(head, fold->mask);
620da486 2196 if (!tc_skip_hw(fold->flags))
c24e43d8 2197 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
77b9900e 2198 tcf_unbind_filter(tp, &fold->res);
06177558
VB		 2199 /* Caller holds reference to fold, so refcnt is always > 0
2200 * after this.
2201 */
2202 refcount_dec(&fold->refcnt);
2203 __fl_put(fold);
77b9900e 2204 } else {
620da486
VB		 2205 if (handle) {
2206 /* user specifies a handle and it doesn't exist */
2207 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2208 handle, GFP_ATOMIC);
9a2d9389
VB		 2209
2210 /* Filter with specified handle was concurrently
2211 * inserted after initial check in cls_api. This is not
2212 * necessarily an error if NLM_F_EXCL is not set in
2213 * message flags. Returning EAGAIN will cause cls_api to
2214 * try to update concurrently inserted rule.
2215 */
2216 if (err == -ENOSPC)
2217 err = -EAGAIN;
620da486
VB		 2218 } else {
2219 handle = 1;
2220 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2221 INT_MAX, GFP_ATOMIC);
2222 }
2223 if (err)
2224 goto errout_hw;
2225
c049d56e 2226 refcount_inc(&fnew->refcnt);
620da486 2227 fnew->handle = handle;
05cd271f 2228 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
3d81e711 2229 spin_unlock(&tp->lock);
77b9900e
JP		 2230 }
2231
620da486
VB		 2232 *arg = fnew;
2233
39b7b6a6 2234 kfree(tb);
99815f50 2235 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
77b9900e
JP		 2236 return 0;
2237
c049d56e
VB		 2238errout_ht:
2239 spin_lock(&tp->lock);
620da486 2240errout_hw:
c049d56e 2241 fnew->deleted = true;
3d81e711 2242 spin_unlock(&tp->lock);
620da486 2243 if (!tc_skip_hw(fnew->flags))
c24e43d8 2244 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1f17f774
VB		 2245 if (in_ht)
2246 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2247 fnew->mask->filter_ht_params);
ecb3dea4 2248errout_mask:
9994677c 2249 fl_mask_put(head, fnew->mask);
77b9900e 2250errout:
c049d56e 2251 __fl_put(fnew);
39b7b6a6
AB		 2252errout_tb:
2253 kfree(tb);
2cddd201 2254errout_mask_alloc:
99815f50 2255 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
06177558
VB		 2256errout_fold:
2257 if (fold)
2258 __fl_put(fold);
77b9900e
JP		 2259 return err;
2260}
2261
571acf21 2262static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
12db03b6 2263 bool rtnl_held, struct netlink_ext_ack *extack)
77b9900e 2264{
e474619a 2265 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 2266 struct cls_fl_filter *f = arg;
b2552b8c
VB		 2267 bool last_on_mask;
2268 int err = 0;
77b9900e 2269
c24e43d8 2270 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
05cd271f 2271 *last = list_empty(&head->masks);
06177558
VB		 2272 __fl_put(f);
2273
b2552b8c 2274 return err;
77b9900e
JP		 2275}
2276
12db03b6
VB		 2277static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2278 bool rtnl_held)
77b9900e 2279{
d39d7149
CW		 2280 struct cls_fl_head *head = fl_head_dereference(tp);
2281 unsigned long id = arg->cookie, tmp;
77b9900e 2282 struct cls_fl_filter *f;
05cd271f 2283
01683a14
VB		 2284 arg->count = arg->skip;
2285
d5ef1906 2286 rcu_read_lock();
d39d7149
CW		 2287 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2288 /* don't return filters that are being deleted */
2289 if (!refcount_inc_not_zero(&f->refcnt))
2290 continue;
d5ef1906
VB		 2291 rcu_read_unlock();
2292
01683a14 2293 if (arg->fn(tp, f, arg) < 0) {
06177558 2294 __fl_put(f);
01683a14 2295 arg->stop = 1;
d5ef1906 2296 rcu_read_lock();
01683a14 2297 break;
05cd271f 2298 }
06177558 2299 __fl_put(f);
01683a14 2300 arg->count++;
d5ef1906 2301 rcu_read_lock();
77b9900e 2302 }
d5ef1906 2303 rcu_read_unlock();
d39d7149 2304 arg->cookie = id;
77b9900e
JP		 2305}
2306
c049d56e
VB		 2307static struct cls_fl_filter *
2308fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2309{
2310 struct cls_fl_head *head = fl_head_dereference(tp);
2311
2312 spin_lock(&tp->lock);
2313 if (list_empty(&head->hw_filters)) {
2314 spin_unlock(&tp->lock);
2315 return NULL;
2316 }
2317
2318 if (!f)
2319 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2320 hw_list);
2321 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2322 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2323 spin_unlock(&tp->lock);
2324 return f;
2325 }
2326 }
2327
2328 spin_unlock(&tp->lock);
2329 return NULL;
2330}
2331
a7323311 2332static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
31533cba
JH		 2333 void *cb_priv, struct netlink_ext_ack *extack)
2334{
31533cba 2335 struct tcf_block *block = tp->chain->block;
f9e30088 2336 struct flow_cls_offload cls_flower = {};
c049d56e 2337 struct cls_fl_filter *f = NULL;
31533cba
JH		 2338 int err;
2339
c049d56e
VB		 2340 /* hw_filters list can only be changed by hw offload functions after
2341 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2342 * iterating it.
2343 */
2344 ASSERT_RTNL();
3a7b6861 2345
c049d56e 2346 while ((f = fl_get_next_hw_filter(tp, f, add))) {
95e27a4d
JH		 2347 cls_flower.rule =
2348 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2349 if (!cls_flower.rule) {
2350 __fl_put(f);
2351 return -ENOMEM;
2352 }
31533cba 2353
95e27a4d 2354 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
d6787147 2355 extack);
95e27a4d 2356 cls_flower.command = add ?
f9e30088 2357 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
95e27a4d
JH		 2358 cls_flower.cookie = (unsigned long)f;
2359 cls_flower.rule->match.dissector = &f->mask->dissector;
2360 cls_flower.rule->match.mask = &f->mask->key;
2361 cls_flower.rule->match.key = &f->mkey;
2362
c2ccf84e
IS		 2363 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
2364 cls_flower.common.extack);
95e27a4d 2365 if (err) {
8f256622 2366 kfree(cls_flower.rule);
95e27a4d 2367 if (tc_skip_sw(f->flags)) {
95e27a4d
JH		 2368 __fl_put(f);
2369 return err;
31533cba 2370 }
95e27a4d
JH		 2371 goto next_flow;
2372 }
31533cba 2373
95e27a4d
JH		 2374 cls_flower.classid = f->res.classid;
2375
40119211
VB		 2376 err = tc_setup_cb_reoffload(block, tp, add, cb,
2377 TC_SETUP_CLSFLOWER, &cls_flower,
2378 cb_priv, &f->flags,
2379 &f->in_hw_count);
9c1c0e12 2380 tc_cleanup_offload_action(&cls_flower.rule->action);
95e27a4d
JH		 2381 kfree(cls_flower.rule);
2382
2383 if (err) {
40119211
VB		 2384 __fl_put(f);
2385 return err;
31533cba 2386 }
95e27a4d 2387next_flow:
95e27a4d 2388 __fl_put(f);
31533cba
JH		 2389 }
2390
2391 return 0;
2392}
2393
a449a3e7
VB		 2394static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2395{
2396 struct flow_cls_offload *cls_flower = type_data;
2397 struct cls_fl_filter *f =
2398 (struct cls_fl_filter *) cls_flower->cookie;
2399 struct cls_fl_head *head = fl_head_dereference(tp);
2400
2401 spin_lock(&tp->lock);
2402 list_add(&f->hw_list, &head->hw_filters);
2403 spin_unlock(&tp->lock);
2404}
2405
2406static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2407{
2408 struct flow_cls_offload *cls_flower = type_data;
2409 struct cls_fl_filter *f =
2410 (struct cls_fl_filter *) cls_flower->cookie;
2411
2412 spin_lock(&tp->lock);
2413 if (!list_empty(&f->hw_list))
2414 list_del_init(&f->hw_list);
2415 spin_unlock(&tp->lock);
2416}
2417
8f256622
PNA		 2418static int fl_hw_create_tmplt(struct tcf_chain *chain,
2419 struct fl_flow_tmplt *tmplt)
34738452 2420{
f9e30088 2421 struct flow_cls_offload cls_flower = {};
34738452 2422 struct tcf_block *block = chain->block;
34738452 2423
e3ab786b 2424 cls_flower.rule = flow_rule_alloc(0);
8f256622
PNA		 2425 if (!cls_flower.rule)
2426 return -ENOMEM;
2427
34738452 2428 cls_flower.common.chain_index = chain->index;
f9e30088 2429 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
34738452 2430 cls_flower.cookie = (unsigned long) tmplt;
8f256622
PNA		 2431 cls_flower.rule->match.dissector = &tmplt->dissector;
2432 cls_flower.rule->match.mask = &tmplt->mask;
2433 cls_flower.rule->match.key = &tmplt->dummy_key;
34738452
JP		 2434
2435 /* We don't care if driver (any of them) fails to handle this
2436 * call. It serves just as a hint for it.
2437 */
40119211 2438 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
8f256622
PNA		 2439 kfree(cls_flower.rule);
2440
2441 return 0;
34738452
JP		 2442}
2443
2444static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2445 struct fl_flow_tmplt *tmplt)
2446{
f9e30088 2447 struct flow_cls_offload cls_flower = {};
34738452
JP		 2448 struct tcf_block *block = chain->block;
2449
2450 cls_flower.common.chain_index = chain->index;
f9e30088 2451 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
34738452
JP		 2452 cls_flower.cookie = (unsigned long) tmplt;
2453
40119211 2454 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
34738452
JP		 2455}
2456
b95ec7eb
JP		 2457static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2458 struct nlattr **tca,
2459 struct netlink_ext_ack *extack)
2460{
2461 struct fl_flow_tmplt *tmplt;
2462 struct nlattr **tb;
2463 int err;
2464
2465 if (!tca[TCA_OPTIONS])
2466 return ERR_PTR(-EINVAL);
2467
2468 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2469 if (!tb)
2470 return ERR_PTR(-ENOBUFS);
8cb08174
JB		 2471 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2472 tca[TCA_OPTIONS], fl_policy, NULL);
b95ec7eb
JP		 2473 if (err)
2474 goto errout_tb;
2475
2476 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1cbc36a5
DC		 2477 if (!tmplt) {
2478 err = -ENOMEM;
b95ec7eb 2479 goto errout_tb;
1cbc36a5 2480 }
b95ec7eb
JP		 2481 tmplt->chain = chain;
2482 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2483 if (err)
2484 goto errout_tmplt;
b95ec7eb
JP		 2485
2486 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2487
8f256622
PNA		 2488 err = fl_hw_create_tmplt(chain, tmplt);
2489 if (err)
2490 goto errout_tmplt;
34738452 2491
8f256622 2492 kfree(tb);
b95ec7eb
JP		 2493 return tmplt;
2494
2495errout_tmplt:
2496 kfree(tmplt);
2497errout_tb:
2498 kfree(tb);
2499 return ERR_PTR(err);
2500}
2501
ec3ed293
VB		 2502static void fl_tmplt_destroy(void *tmplt_priv)
2503{
2504 struct fl_flow_tmplt *tmplt = tmplt_priv;
2505
95278dda
CW		 2506 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2507 kfree(tmplt);
ec3ed293
VB		 2508}
2509
77b9900e
JP		 2510static int fl_dump_key_val(struct sk_buff *skb,
2511 void *val, int val_type,
2512 void *mask, int mask_type, int len)
2513{
2514 int err;
2515
2516 if (!memchr_inv(mask, 0, len))
2517 return 0;
2518 err = nla_put(skb, val_type, len, val);
2519 if (err)
2520 return err;
2521 if (mask_type != TCA_FLOWER_UNSPEC) {
2522 err = nla_put(skb, mask_type, len, mask);
2523 if (err)
2524 return err;
2525 }
2526 return 0;
2527}
2528
5c72299f
AN		 2529static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2530 struct fl_flow_key *mask)
2531{
8ffb055b
YK		 2532 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2533 TCA_FLOWER_KEY_PORT_DST_MIN,
2534 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2535 sizeof(key->tp_range.tp_min.dst)) ||
2536 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2537 TCA_FLOWER_KEY_PORT_DST_MAX,
2538 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2539 sizeof(key->tp_range.tp_max.dst)) ||
2540 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2541 TCA_FLOWER_KEY_PORT_SRC_MIN,
2542 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2543 sizeof(key->tp_range.tp_min.src)) ||
2544 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2545 TCA_FLOWER_KEY_PORT_SRC_MAX,
2546 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2547 sizeof(key->tp_range.tp_max.src)))
5c72299f
AN		 2548 return -1;
2549
2550 return 0;
2551}
2552
61aec25a
GN		 2553static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2554 struct flow_dissector_key_mpls *mpls_key,
2555 struct flow_dissector_key_mpls *mpls_mask,
2556 u8 lse_index)
2557{
2558 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2559 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2560 int err;
2561
2562 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2563 lse_index + 1);
2564 if (err)
2565 return err;
2566
2567 if (lse_mask->mpls_ttl) {
2568 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2569 lse_key->mpls_ttl);
2570 if (err)
2571 return err;
2572 }
2573 if (lse_mask->mpls_bos) {
2574 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2575 lse_key->mpls_bos);
2576 if (err)
2577 return err;
2578 }
2579 if (lse_mask->mpls_tc) {
2580 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2581 lse_key->mpls_tc);
2582 if (err)
2583 return err;
2584 }
2585 if (lse_mask->mpls_label) {
7fdd375e
GN		 2586 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2587 lse_key->mpls_label);
61aec25a
GN		 2588 if (err)
2589 return err;
2590 }
2591
2592 return 0;
2593}
2594
2595static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2596 struct flow_dissector_key_mpls *mpls_key,
2597 struct flow_dissector_key_mpls *mpls_mask)
2598{
2599 struct nlattr *opts;
2600 struct nlattr *lse;
2601 u8 lse_index;
2602 int err;
2603
2604 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2605 if (!opts)
2606 return -EMSGSIZE;
2607
2608 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2609 if (!(mpls_mask->used_lses & 1 << lse_index))
2610 continue;
2611
2612 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2613 if (!lse) {
2614 err = -EMSGSIZE;
2615 goto err_opts;
2616 }
2617
2618 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2619 lse_index);
2620 if (err)
2621 goto err_opts_lse;
2622 nla_nest_end(skb, lse);
2623 }
2624 nla_nest_end(skb, opts);
2625
2626 return 0;
2627
2628err_opts_lse:
2629 nla_nest_cancel(skb, lse);
2630err_opts:
2631 nla_nest_cancel(skb, opts);
2632
2633 return err;
2634}
2635
a577d8f7
BL		 2636static int fl_dump_key_mpls(struct sk_buff *skb,
2637 struct flow_dissector_key_mpls *mpls_key,
2638 struct flow_dissector_key_mpls *mpls_mask)
2639{
58cff782
GN		 2640 struct flow_dissector_mpls_lse *lse_mask;
2641 struct flow_dissector_mpls_lse *lse_key;
a577d8f7
BL		 2642 int err;
2643
61aec25a 2644 if (!mpls_mask->used_lses)
a577d8f7 2645 return 0;
58cff782
GN		 2646
2647 lse_mask = &mpls_mask->ls[0];
2648 lse_key = &mpls_key->ls[0];
2649
61aec25a
GN		 2650 /* For backward compatibility, don't use the MPLS nested attributes if
2651 * the rule can be expressed using the old attributes.
2652 */
2653 if (mpls_mask->used_lses & ~1 ||
2654 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2655 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2656 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2657
58cff782 2658 if (lse_mask->mpls_ttl) {
a577d8f7 2659 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
58cff782 2660 lse_key->mpls_ttl);
a577d8f7
BL		 2661 if (err)
2662 return err;
2663 }
58cff782 2664 if (lse_mask->mpls_tc) {
a577d8f7 2665 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
58cff782 2666 lse_key->mpls_tc);
a577d8f7
BL		 2667 if (err)
2668 return err;
2669 }
58cff782 2670 if (lse_mask->mpls_label) {
a577d8f7 2671 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
58cff782 2672 lse_key->mpls_label);
a577d8f7
BL		 2673 if (err)
2674 return err;
2675 }
58cff782 2676 if (lse_mask->mpls_bos) {
a577d8f7 2677 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
58cff782 2678 lse_key->mpls_bos);
a577d8f7
BL		 2679 if (err)
2680 return err;
2681 }
2682 return 0;
2683}
2684
0e2c17b6 2685static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
4d80cc0a
OG		 2686 struct flow_dissector_key_ip *key,
2687 struct flow_dissector_key_ip *mask)
2688{
0e2c17b6
OG		 2689 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2690 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2691 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2692 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2693
2694 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2695 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
4d80cc0a
OG		 2696 return -1;
2697
2698 return 0;
2699}
2700
9399ae9a 2701static int fl_dump_key_vlan(struct sk_buff *skb,
d64efd09 2702 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 2703 struct flow_dissector_key_vlan *vlan_key,
2704 struct flow_dissector_key_vlan *vlan_mask)
2705{
2706 int err;
2707
2708 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2709 return 0;
2710 if (vlan_mask->vlan_id) {
d64efd09 2711 err = nla_put_u16(skb, vlan_id_key,
9399ae9a
HHZ		 2712 vlan_key->vlan_id);
2713 if (err)
2714 return err;
2715 }
2716 if (vlan_mask->vlan_priority) {
d64efd09 2717 err = nla_put_u8(skb, vlan_prio_key,
9399ae9a
HHZ		 2718 vlan_key->vlan_priority);
2719 if (err)
2720 return err;
2721 }
2722 return 0;
2723}
2724
faa3ffce
OG		 2725static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2726 u32 *flower_key, u32 *flower_mask,
2727 u32 flower_flag_bit, u32 dissector_flag_bit)
2728{
2729 if (dissector_mask & dissector_flag_bit) {
2730 *flower_mask |= flower_flag_bit;
2731 if (dissector_key & dissector_flag_bit)
2732 *flower_key |= flower_flag_bit;
2733 }
2734}
2735
2736static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2737{
2738 u32 key, mask;
2739 __be32 _key, _mask;
2740 int err;
2741
2742 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2743 return 0;
2744
2745 key = 0;
2746 mask = 0;
2747
2748 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2749 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 2750 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2751 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2752 FLOW_DIS_FIRST_FRAG);
faa3ffce
OG		 2753
2754 _key = cpu_to_be32(key);
2755 _mask = cpu_to_be32(mask);
2756
2757 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2758 if (err)
2759 return err;
2760
2761 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2762}
2763
0a6e7778
PJV		 2764static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2765 struct flow_dissector_key_enc_opts *enc_opts)
2766{
2767 struct geneve_opt *opt;
2768 struct nlattr *nest;
2769 int opt_off = 0;
2770
ae0be8de 2771 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
0a6e7778
PJV		 2772 if (!nest)
2773 goto nla_put_failure;
2774
2775 while (enc_opts->len > opt_off) {
2776 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2777
2778 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2779 opt->opt_class))
2780 goto nla_put_failure;
2781 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2782 opt->type))
2783 goto nla_put_failure;
2784 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2785 opt->length * 4, opt->opt_data))
2786 goto nla_put_failure;
2787
2788 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2789 }
2790 nla_nest_end(skb, nest);
2791 return 0;
2792
2793nla_put_failure:
2794 nla_nest_cancel(skb, nest);
2795 return -EMSGSIZE;
2796}
2797
d8f9dfae
XL		 2798static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2799 struct flow_dissector_key_enc_opts *enc_opts)
2800{
2801 struct vxlan_metadata *md;
2802 struct nlattr *nest;
2803
2804 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2805 if (!nest)
2806 goto nla_put_failure;
2807
2808 md = (struct vxlan_metadata *)&enc_opts->data[0];
2809 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2810 goto nla_put_failure;
2811
2812 nla_nest_end(skb, nest);
2813 return 0;
2814
2815nla_put_failure:
2816 nla_nest_cancel(skb, nest);
2817 return -EMSGSIZE;
2818}
2819
79b1011c
XL		 2820static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2821 struct flow_dissector_key_enc_opts *enc_opts)
2822{
2823 struct erspan_metadata *md;
2824 struct nlattr *nest;
2825
2826 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2827 if (!nest)
2828 goto nla_put_failure;
2829
2830 md = (struct erspan_metadata *)&enc_opts->data[0];
2831 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2832 goto nla_put_failure;
2833
2834 if (md->version == 1 &&
2835 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2836 goto nla_put_failure;
2837
2838 if (md->version == 2 &&
2839 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2840 md->u.md2.dir) ||
2841 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2842 get_hwid(&md->u.md2))))
2843 goto nla_put_failure;
2844
2845 nla_nest_end(skb, nest);
2846 return 0;
2847
2848nla_put_failure:
2849 nla_nest_cancel(skb, nest);
2850 return -EMSGSIZE;
2851}
2852
e3acda7a
WD		 2853static int fl_dump_key_gtp_opt(struct sk_buff *skb,
2854 struct flow_dissector_key_enc_opts *enc_opts)
2855
2856{
2857 struct gtp_pdu_session_info *session_info;
2858 struct nlattr *nest;
2859
2860 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GTP);
2861 if (!nest)
2862 goto nla_put_failure;
2863
2864 session_info = (struct gtp_pdu_session_info *)&enc_opts->data[0];
2865
2866 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE,
2867 session_info->pdu_type))
2868 goto nla_put_failure;
2869
2870 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_QFI, session_info->qfi))
2871 goto nla_put_failure;
2872
2873 nla_nest_end(skb, nest);
2874 return 0;
2875
2876nla_put_failure:
2877 nla_nest_cancel(skb, nest);
2878 return -EMSGSIZE;
2879}
2880
e0ace68a
PB		 2881static int fl_dump_key_ct(struct sk_buff *skb,
2882 struct flow_dissector_key_ct *key,
2883 struct flow_dissector_key_ct *mask)
2884{
2885 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2886 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2887 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2888 sizeof(key->ct_state)))
2889 goto nla_put_failure;
2890
2891 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2892 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2893 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2894 sizeof(key->ct_zone)))
2895 goto nla_put_failure;
2896
2897 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2898 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2899 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2900 sizeof(key->ct_mark)))
2901 goto nla_put_failure;
2902
2903 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2904 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2905 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2906 sizeof(key->ct_labels)))
2907 goto nla_put_failure;
2908
2909 return 0;
2910
2911nla_put_failure:
2912 return -EMSGSIZE;
2913}
2914
0a6e7778
PJV		 2915static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2916 struct flow_dissector_key_enc_opts *enc_opts)
2917{
2918 struct nlattr *nest;
2919 int err;
2920
2921 if (!enc_opts->len)
2922 return 0;
2923
ae0be8de 2924 nest = nla_nest_start_noflag(skb, enc_opt_type);
0a6e7778
PJV		 2925 if (!nest)
2926 goto nla_put_failure;
2927
2928 switch (enc_opts->dst_opt_type) {
2929 case TUNNEL_GENEVE_OPT:
2930 err = fl_dump_key_geneve_opt(skb, enc_opts);
2931 if (err)
2932 goto nla_put_failure;
2933 break;
d8f9dfae
XL		 2934 case TUNNEL_VXLAN_OPT:
2935 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2936 if (err)
2937 goto nla_put_failure;
2938 break;
79b1011c
XL		 2939 case TUNNEL_ERSPAN_OPT:
2940 err = fl_dump_key_erspan_opt(skb, enc_opts);
2941 if (err)
2942 goto nla_put_failure;
2943 break;
e3acda7a
WD		 2944 case TUNNEL_GTP_OPT:
2945 err = fl_dump_key_gtp_opt(skb, enc_opts);
2946 if (err)
2947 goto nla_put_failure;
2948 break;
0a6e7778
PJV		 2949 default:
2950 goto nla_put_failure;
2951 }
2952 nla_nest_end(skb, nest);
2953 return 0;
2954
2955nla_put_failure:
2956 nla_nest_cancel(skb, nest);
2957 return -EMSGSIZE;
2958}
2959
2960static int fl_dump_key_enc_opt(struct sk_buff *skb,
2961 struct flow_dissector_key_enc_opts *key_opts,
2962 struct flow_dissector_key_enc_opts *msk_opts)
2963{
2964 int err;
2965
2966 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2967 if (err)
2968 return err;
2969
2970 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2971}
2972
f5749081
JP		 2973static int fl_dump_key(struct sk_buff *skb, struct net *net,
2974 struct fl_flow_key *key, struct fl_flow_key *mask)
77b9900e 2975{
8212ed77 2976 if (mask->meta.ingress_ifindex) {
77b9900e
JP		 2977 struct net_device *dev;
2978
8212ed77 2979 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
77b9900e
JP		 2980 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2981 goto nla_put_failure;
2982 }
2983
2984 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2985 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2986 sizeof(key->eth.dst)) ||
2987 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2988 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2989 sizeof(key->eth.src)) ||
2990 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2991 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2992 sizeof(key->basic.n_proto)))
2993 goto nla_put_failure;
9399ae9a 2994
a577d8f7
BL		 2995 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2996 goto nla_put_failure;
2997
d64efd09
JL		 2998 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2999 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
9399ae9a
HHZ		 3000 goto nla_put_failure;
3001
d64efd09
JL		 3002 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
3003 TCA_FLOWER_KEY_CVLAN_PRIO,
3004 &key->cvlan, &mask->cvlan) ||
3005 (mask->cvlan.vlan_tpid &&
158abbf1
JL		 3006 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3007 key->cvlan.vlan_tpid)))
d3069512
JL		 3008 goto nla_put_failure;
3009
5e9a0fe4 3010 if (mask->basic.n_proto) {
2105f700 3011 if (mask->cvlan.vlan_eth_type) {
5e9a0fe4
JL		 3012 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
3013 key->basic.n_proto))
3014 goto nla_put_failure;
2105f700 3015 } else if (mask->vlan.vlan_eth_type) {
5e9a0fe4 3016 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2105f700 3017 key->vlan.vlan_eth_type))
5e9a0fe4
JL		 3018 goto nla_put_failure;
3019 }
d64efd09
JL		 3020 }
3021
77b9900e
JP		 3022 if ((key->basic.n_proto == htons(ETH_P_IP) ||
3023 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 3024 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 3025 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a 3026 sizeof(key->basic.ip_proto)) ||
0e2c17b6 3027 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
77b9900e
JP		 3028 goto nla_put_failure;
3029
c3f83241 3030 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 3031 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
3032 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
3033 sizeof(key->ipv4.src)) ||
3034 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
3035 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
3036 sizeof(key->ipv4.dst))))
3037 goto nla_put_failure;
c3f83241 3038 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 3039 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
3040 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
3041 sizeof(key->ipv6.src)) ||
3042 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
3043 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
3044 sizeof(key->ipv6.dst))))
3045 goto nla_put_failure;
3046
3047 if (key->basic.ip_proto == IPPROTO_TCP &&
3048 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 3049 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 3050 sizeof(key->tp.src)) ||
3051 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 3052 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 3053 sizeof(key->tp.dst)) ||
3054 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
3055 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
3056 sizeof(key->tcp.flags))))
77b9900e
JP		 3057 goto nla_put_failure;
3058 else if (key->basic.ip_proto == IPPROTO_UDP &&
3059 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 3060 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 3061 sizeof(key->tp.src)) ||
3062 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 3063 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 3064 sizeof(key->tp.dst))))
3065 goto nla_put_failure;
3066 else if (key->basic.ip_proto == IPPROTO_SCTP &&
3067 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
3068 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
3069 sizeof(key->tp.src)) ||
3070 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
3071 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 3072 sizeof(key->tp.dst))))
3073 goto nla_put_failure;
7b684884
SH		 3074 else if (key->basic.n_proto == htons(ETH_P_IP) &&
3075 key->basic.ip_proto == IPPROTO_ICMP &&
3076 (fl_dump_key_val(skb, &key->icmp.type,
3077 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
3078 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
3079 sizeof(key->icmp.type)) ||
3080 fl_dump_key_val(skb, &key->icmp.code,
3081 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
3082 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
3083 sizeof(key->icmp.code))))
3084 goto nla_put_failure;
3085 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
3086 key->basic.ip_proto == IPPROTO_ICMPV6 &&
3087 (fl_dump_key_val(skb, &key->icmp.type,
3088 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
3089 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
3090 sizeof(key->icmp.type)) ||
3091 fl_dump_key_val(skb, &key->icmp.code,
3092 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
3093 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
3094 sizeof(key->icmp.code))))
3095 goto nla_put_failure;
99d31326
SH		 3096 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
3097 key->basic.n_proto == htons(ETH_P_RARP)) &&
3098 (fl_dump_key_val(skb, &key->arp.sip,
3099 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
3100 TCA_FLOWER_KEY_ARP_SIP_MASK,
3101 sizeof(key->arp.sip)) ||
3102 fl_dump_key_val(skb, &key->arp.tip,
3103 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
3104 TCA_FLOWER_KEY_ARP_TIP_MASK,
3105 sizeof(key->arp.tip)) ||
3106 fl_dump_key_val(skb, &key->arp.op,
3107 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
3108 TCA_FLOWER_KEY_ARP_OP_MASK,
3109 sizeof(key->arp.op)) ||
3110 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
3111 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
3112 sizeof(key->arp.sha)) ||
3113 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
3114 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
3115 sizeof(key->arp.tha))))
3116 goto nla_put_failure;
77b9900e 3117
5c72299f
AN		 3118 if ((key->basic.ip_proto == IPPROTO_TCP ||
3119 key->basic.ip_proto == IPPROTO_UDP ||
3120 key->basic.ip_proto == IPPROTO_SCTP) &&
3121 fl_dump_key_port_range(skb, key, mask))
3122 goto nla_put_failure;
3123
bc3103f1
AV		 3124 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3125 (fl_dump_key_val(skb, &key->enc_ipv4.src,
3126 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
3127 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
3128 sizeof(key->enc_ipv4.src)) ||
3129 fl_dump_key_val(skb, &key->enc_ipv4.dst,
3130 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
3131 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
3132 sizeof(key->enc_ipv4.dst))))
3133 goto nla_put_failure;
3134 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3135 (fl_dump_key_val(skb, &key->enc_ipv6.src,
3136 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
3137 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
3138 sizeof(key->enc_ipv6.src)) ||
3139 fl_dump_key_val(skb, &key->enc_ipv6.dst,
3140 TCA_FLOWER_KEY_ENC_IPV6_DST,
3141 &mask->enc_ipv6.dst,
3142 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
3143 sizeof(key->enc_ipv6.dst))))
3144 goto nla_put_failure;
3145
3146 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 3147 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 3148 sizeof(key->enc_key_id)) ||
3149 fl_dump_key_val(skb, &key->enc_tp.src,
3150 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
3151 &mask->enc_tp.src,
3152 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
3153 sizeof(key->enc_tp.src)) ||
3154 fl_dump_key_val(skb, &key->enc_tp.dst,
3155 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
3156 &mask->enc_tp.dst,
3157 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
0e2c17b6 3158 sizeof(key->enc_tp.dst)) ||
0a6e7778
PJV		 3159 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
3160 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
bc3103f1
AV		 3161 goto nla_put_failure;
3162
e0ace68a
PB		 3163 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
3164 goto nla_put_failure;
3165
faa3ffce
OG		 3166 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
3167 goto nla_put_failure;
3168
5923b8f7
AL		 3169 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
3170 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
3171 sizeof(key->hash.hash)))
3172 goto nla_put_failure;
3173
f5749081
JP		 3174 return 0;
3175
3176nla_put_failure:
3177 return -EMSGSIZE;
3178}
3179
3180static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
12db03b6 3181 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
f5749081
JP		 3182{
3183 struct cls_fl_filter *f = fh;
3184 struct nlattr *nest;
3185 struct fl_flow_key *key, *mask;
3d81e711 3186 bool skip_hw;
f5749081
JP		 3187
3188 if (!f)
3189 return skb->len;
3190
3191 t->tcm_handle = f->handle;
3192
ae0be8de 3193 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
f5749081
JP		 3194 if (!nest)
3195 goto nla_put_failure;
3196
3d81e711
VB		 3197 spin_lock(&tp->lock);
3198
f5749081
JP		 3199 if (f->res.classid &&
3200 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3d81e711 3201 goto nla_put_failure_locked;
f5749081
JP		 3202
3203 key = &f->key;
3204 mask = &f->mask->key;
3d81e711 3205 skip_hw = tc_skip_hw(f->flags);
f5749081
JP		 3206
3207 if (fl_dump_key(skb, net, key, mask))
3d81e711 3208 goto nla_put_failure_locked;
f5749081 3209
749e6720 3210 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3d81e711
VB		 3211 goto nla_put_failure_locked;
3212
3213 spin_unlock(&tp->lock);
3214
3215 if (!skip_hw)
c24e43d8 3216 fl_hw_update_stats(tp, f, rtnl_held);
e69985c6 3217
86c55361
VB		 3218 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3219 goto nla_put_failure;
3220
77b9900e
JP		 3221 if (tcf_exts_dump(skb, &f->exts))
3222 goto nla_put_failure;
3223
3224 nla_nest_end(skb, nest);
3225
3226 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3227 goto nla_put_failure;
3228
3229 return skb->len;
3230
3d81e711
VB		 3231nla_put_failure_locked:
3232 spin_unlock(&tp->lock);
77b9900e
JP		 3233nla_put_failure:
3234 nla_nest_cancel(skb, nest);
3235 return -1;
3236}
3237
0348451d
VB		 3238static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3239 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3240{
3241 struct cls_fl_filter *f = fh;
3242 struct nlattr *nest;
3243 bool skip_hw;
3244
3245 if (!f)
3246 return skb->len;
3247
3248 t->tcm_handle = f->handle;
3249
3250 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3251 if (!nest)
3252 goto nla_put_failure;
3253
3254 spin_lock(&tp->lock);
3255
3256 skip_hw = tc_skip_hw(f->flags);
3257
3258 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3259 goto nla_put_failure_locked;
3260
3261 spin_unlock(&tp->lock);
3262
3263 if (!skip_hw)
3264 fl_hw_update_stats(tp, f, rtnl_held);
3265
3266 if (tcf_exts_terse_dump(skb, &f->exts))
3267 goto nla_put_failure;
3268
3269 nla_nest_end(skb, nest);
3270
3271 return skb->len;
3272
3273nla_put_failure_locked:
3274 spin_unlock(&tp->lock);
3275nla_put_failure:
3276 nla_nest_cancel(skb, nest);
3277 return -1;
3278}
3279
b95ec7eb
JP		 3280static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3281{
3282 struct fl_flow_tmplt *tmplt = tmplt_priv;
3283 struct fl_flow_key *key, *mask;
3284 struct nlattr *nest;
3285
ae0be8de 3286 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
b95ec7eb
JP		 3287 if (!nest)
3288 goto nla_put_failure;
3289
3290 key = &tmplt->dummy_key;
3291 mask = &tmplt->mask;
3292
3293 if (fl_dump_key(skb, net, key, mask))
3294 goto nla_put_failure;
3295
3296 nla_nest_end(skb, nest);
3297
3298 return skb->len;
3299
3300nla_put_failure:
3301 nla_nest_cancel(skb, nest);
3302 return -EMSGSIZE;
3303}
3304
2e24cd75
CW		 3305static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3306 unsigned long base)
07d79fc7
CW		 3307{
3308 struct cls_fl_filter *f = fh;
3309
2e24cd75
CW		 3310 if (f && f->res.classid == classid) {
3311 if (cl)
3312 __tcf_bind_filter(q, &f->res, base);
3313 else
3314 __tcf_unbind_filter(q, &f->res);
3315 }
07d79fc7
CW		 3316}
3317
a5b72a08
DC		 3318static bool fl_delete_empty(struct tcf_proto *tp)
3319{
3320 struct cls_fl_head *head = fl_head_dereference(tp);
3321
3322 spin_lock(&tp->lock);
3323 tp->deleting = idr_is_empty(&head->handle_idr);
3324 spin_unlock(&tp->lock);
3325
3326 return tp->deleting;
3327}
3328
77b9900e
JP		 3329static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3330 .kind = "flower",
3331 .classify = fl_classify,
3332 .init = fl_init,
3333 .destroy = fl_destroy,
3334 .get = fl_get,
06177558 3335 .put = fl_put,
77b9900e
JP		 3336 .change = fl_change,
3337 .delete = fl_delete,
a5b72a08 3338 .delete_empty = fl_delete_empty,
77b9900e 3339 .walk = fl_walk,
31533cba 3340 .reoffload = fl_reoffload,
a449a3e7
VB		 3341 .hw_add = fl_hw_add,
3342 .hw_del = fl_hw_del,
77b9900e 3343 .dump = fl_dump,
0348451d 3344 .terse_dump = fl_terse_dump,
07d79fc7 3345 .bind_class = fl_bind_class,
b95ec7eb
JP		 3346 .tmplt_create = fl_tmplt_create,
3347 .tmplt_destroy = fl_tmplt_destroy,
3348 .tmplt_dump = fl_tmplt_dump,
77b9900e 3349 .owner = THIS_MODULE,
92149190 3350 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
77b9900e
JP		 3351};
3352
3353static int __init cls_fl_init(void)
3354{
3355 return register_tcf_proto_ops(&cls_fl_ops);
3356}
3357
3358static void __exit cls_fl_exit(void)
3359{
3360 unregister_tcf_proto_ops(&cls_fl_ops);
3361}
3362
3363module_init(cls_fl_init);
3364module_exit(cls_fl_exit);
3365
3366MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3367MODULE_DESCRIPTION("Flower classifier");
3368MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)