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net: sched: flower: don't call synchronize_rcu() on mask creation
[thirdparty/linux.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>
22#include <net/ip.h>
23#include <net/flow_dissector.h>
0a6e7778 24#include <net/geneve.h>
77b9900e 25
bc3103f1
AV		 26#include <net/dst.h>
27#include <net/dst_metadata.h>
28
77b9900e
JP		 29struct fl_flow_key {
30 int indev_ifindex;
42aecaa9 31 struct flow_dissector_key_control control;
bc3103f1 32 struct flow_dissector_key_control enc_control;
77b9900e
JP		 33 struct flow_dissector_key_basic basic;
34 struct flow_dissector_key_eth_addrs eth;
9399ae9a 35 struct flow_dissector_key_vlan vlan;
d64efd09 36 struct flow_dissector_key_vlan cvlan;
77b9900e 37 union {
c3f83241 38 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 39 struct flow_dissector_key_ipv6_addrs ipv6;
40 };
41 struct flow_dissector_key_ports tp;
7b684884 42 struct flow_dissector_key_icmp icmp;
99d31326 43 struct flow_dissector_key_arp arp;
bc3103f1
AV		 44 struct flow_dissector_key_keyid enc_key_id;
45 union {
46 struct flow_dissector_key_ipv4_addrs enc_ipv4;
47 struct flow_dissector_key_ipv6_addrs enc_ipv6;
48 };
f4d997fd 49 struct flow_dissector_key_ports enc_tp;
a577d8f7 50 struct flow_dissector_key_mpls mpls;
fdfc7dd6 51 struct flow_dissector_key_tcp tcp;
4d80cc0a 52 struct flow_dissector_key_ip ip;
0e2c17b6 53 struct flow_dissector_key_ip enc_ip;
0a6e7778 54 struct flow_dissector_key_enc_opts enc_opts;
5c72299f
AN		 55 struct flow_dissector_key_ports tp_min;
56 struct flow_dissector_key_ports tp_max;
77b9900e
JP		 57} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
58
59struct fl_flow_mask_range {
60 unsigned short int start;
61 unsigned short int end;
62};
63
64struct fl_flow_mask {
65 struct fl_flow_key key;
66 struct fl_flow_mask_range range;
5c72299f 67 u32 flags;
05cd271f
PB		 68 struct rhash_head ht_node;
69 struct rhashtable ht;
70 struct rhashtable_params filter_ht_params;
71 struct flow_dissector dissector;
72 struct list_head filters;
44a5cd43 73 struct rcu_work rwork;
05cd271f 74 struct list_head list;
f48ef4d5 75 refcount_t refcnt;
77b9900e
JP		 76};
77
b95ec7eb
JP		 78struct fl_flow_tmplt {
79 struct fl_flow_key dummy_key;
80 struct fl_flow_key mask;
81 struct flow_dissector dissector;
82 struct tcf_chain *chain;
83};
84
77b9900e
JP		 85struct cls_fl_head {
86 struct rhashtable ht;
259e60f9 87 spinlock_t masks_lock; /* Protect masks list */
05cd271f 88 struct list_head masks;
c049d56e 89 struct list_head hw_filters;
aaa908ff 90 struct rcu_work rwork;
c15ab236 91 struct idr handle_idr;
77b9900e
JP		 92};
93
94struct cls_fl_filter {
05cd271f 95 struct fl_flow_mask *mask;
77b9900e
JP		 96 struct rhash_head ht_node;
97 struct fl_flow_key mkey;
98 struct tcf_exts exts;
99 struct tcf_result res;
100 struct fl_flow_key key;
101 struct list_head list;
c049d56e 102 struct list_head hw_list;
77b9900e 103 u32 handle;
e69985c6 104 u32 flags;
86c55361 105 u32 in_hw_count;
aaa908ff 106 struct rcu_work rwork;
7091d8c7 107 struct net_device *hw_dev;
06177558
VB		 108 /* Flower classifier is unlocked, which means that its reference counter
109 * can be changed concurrently without any kind of external
110 * synchronization. Use atomic reference counter to be concurrency-safe.
111 */
112 refcount_t refcnt;
b2552b8c 113 bool deleted;
77b9900e
JP		 114};
115
05cd271f
PB		 116static const struct rhashtable_params mask_ht_params = {
117 .key_offset = offsetof(struct fl_flow_mask, key),
118 .key_len = sizeof(struct fl_flow_key),
119 .head_offset = offsetof(struct fl_flow_mask, ht_node),
120 .automatic_shrinking = true,
121};
122
77b9900e
JP		 123static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
124{
125 return mask->range.end - mask->range.start;
126}
127
128static void fl_mask_update_range(struct fl_flow_mask *mask)
129{
130 const u8 *bytes = (const u8 *) &mask->key;
131 size_t size = sizeof(mask->key);
05cd271f 132 size_t i, first = 0, last;
77b9900e 133
05cd271f
PB		 134 for (i = 0; i < size; i++) {
135 if (bytes[i]) {
136 first = i;
137 break;
138 }
139 }
140 last = first;
141 for (i = size - 1; i != first; i--) {
77b9900e 142 if (bytes[i]) {
77b9900e 143 last = i;
05cd271f 144 break;
77b9900e
JP		 145 }
146 }
147 mask->range.start = rounddown(first, sizeof(long));
148 mask->range.end = roundup(last + 1, sizeof(long));
149}
150
151static void *fl_key_get_start(struct fl_flow_key *key,
152 const struct fl_flow_mask *mask)
153{
154 return (u8 *) key + mask->range.start;
155}
156
157static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
158 struct fl_flow_mask *mask)
159{
160 const long *lkey = fl_key_get_start(key, mask);
161 const long *lmask = fl_key_get_start(&mask->key, mask);
162 long *lmkey = fl_key_get_start(mkey, mask);
163 int i;
164
165 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
166 *lmkey++ = *lkey++ & *lmask++;
167}
168
b95ec7eb
JP		 169static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
170 struct fl_flow_mask *mask)
171{
172 const long *lmask = fl_key_get_start(&mask->key, mask);
173 const long *ltmplt;
174 int i;
175
176 if (!tmplt)
177 return true;
178 ltmplt = fl_key_get_start(&tmplt->mask, mask);
179 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
180 if (~*ltmplt++ & *lmask++)
181 return false;
182 }
183 return true;
184}
185
77b9900e
JP		 186static void fl_clear_masked_range(struct fl_flow_key *key,
187 struct fl_flow_mask *mask)
188{
189 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
190}
191
5c72299f
AN		 192static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
193 struct fl_flow_key *key,
194 struct fl_flow_key *mkey)
195{
196 __be16 min_mask, max_mask, min_val, max_val;
197
198 min_mask = htons(filter->mask->key.tp_min.dst);
199 max_mask = htons(filter->mask->key.tp_max.dst);
200 min_val = htons(filter->key.tp_min.dst);
201 max_val = htons(filter->key.tp_max.dst);
202
203 if (min_mask && max_mask) {
204 if (htons(key->tp.dst) < min_val ||
205 htons(key->tp.dst) > max_val)
206 return false;
207
208 /* skb does not have min and max values */
209 mkey->tp_min.dst = filter->mkey.tp_min.dst;
210 mkey->tp_max.dst = filter->mkey.tp_max.dst;
211 }
212 return true;
213}
214
215static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
216 struct fl_flow_key *key,
217 struct fl_flow_key *mkey)
218{
219 __be16 min_mask, max_mask, min_val, max_val;
220
221 min_mask = htons(filter->mask->key.tp_min.src);
222 max_mask = htons(filter->mask->key.tp_max.src);
223 min_val = htons(filter->key.tp_min.src);
224 max_val = htons(filter->key.tp_max.src);
225
226 if (min_mask && max_mask) {
227 if (htons(key->tp.src) < min_val ||
228 htons(key->tp.src) > max_val)
229 return false;
230
231 /* skb does not have min and max values */
232 mkey->tp_min.src = filter->mkey.tp_min.src;
233 mkey->tp_max.src = filter->mkey.tp_max.src;
234 }
235 return true;
236}
237
238static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
239 struct fl_flow_key *mkey)
a3308d8f 240{
05cd271f
PB		 241 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
242 mask->filter_ht_params);
a3308d8f
PB		 243}
244
5c72299f
AN		 245static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
246 struct fl_flow_key *mkey,
247 struct fl_flow_key *key)
248{
249 struct cls_fl_filter *filter, *f;
250
251 list_for_each_entry_rcu(filter, &mask->filters, list) {
252 if (!fl_range_port_dst_cmp(filter, key, mkey))
253 continue;
254
255 if (!fl_range_port_src_cmp(filter, key, mkey))
256 continue;
257
258 f = __fl_lookup(mask, mkey);
259 if (f)
260 return f;
261 }
262 return NULL;
263}
264
265static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
266 struct fl_flow_key *mkey,
267 struct fl_flow_key *key)
268{
269 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
270 return fl_lookup_range(mask, mkey, key);
271
272 return __fl_lookup(mask, mkey);
273}
274
77b9900e
JP		 275static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
276 struct tcf_result *res)
277{
278 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
279 struct cls_fl_filter *f;
05cd271f 280 struct fl_flow_mask *mask;
77b9900e
JP		 281 struct fl_flow_key skb_key;
282 struct fl_flow_key skb_mkey;
283
05cd271f
PB		 284 list_for_each_entry_rcu(mask, &head->masks, list) {
285 fl_clear_masked_range(&skb_key, mask);
bc3103f1 286
05cd271f
PB		 287 skb_key.indev_ifindex = skb->skb_iif;
288 /* skb_flow_dissect() does not set n_proto in case an unknown
289 * protocol, so do it rather here.
290 */
291 skb_key.basic.n_proto = skb->protocol;
292 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
293 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
77b9900e 294
05cd271f 295 fl_set_masked_key(&skb_mkey, &skb_key, mask);
77b9900e 296
5c72299f 297 f = fl_lookup(mask, &skb_mkey, &skb_key);
05cd271f
PB		 298 if (f && !tc_skip_sw(f->flags)) {
299 *res = f->res;
300 return tcf_exts_exec(skb, &f->exts, res);
301 }
77b9900e
JP		 302 }
303 return -1;
304}
305
306static int fl_init(struct tcf_proto *tp)
307{
308 struct cls_fl_head *head;
309
310 head = kzalloc(sizeof(*head), GFP_KERNEL);
311 if (!head)
312 return -ENOBUFS;
313
259e60f9 314 spin_lock_init(&head->masks_lock);
05cd271f 315 INIT_LIST_HEAD_RCU(&head->masks);
c049d56e 316 INIT_LIST_HEAD(&head->hw_filters);
77b9900e 317 rcu_assign_pointer(tp->root, head);
c15ab236 318 idr_init(&head->handle_idr);
77b9900e 319
05cd271f
PB		 320 return rhashtable_init(&head->ht, &mask_ht_params);
321}
322
99815f50 323static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
44a5cd43 324{
99815f50
VB		 325 /* temporary masks don't have their filters list and ht initialized */
326 if (mask_init_done) {
327 WARN_ON(!list_empty(&mask->filters));
328 rhashtable_destroy(&mask->ht);
329 }
44a5cd43
PA		 330 kfree(mask);
331}
332
333static void fl_mask_free_work(struct work_struct *work)
334{
335 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
336 struct fl_flow_mask, rwork);
337
99815f50
VB		 338 fl_mask_free(mask, true);
339}
340
341static void fl_uninit_mask_free_work(struct work_struct *work)
342{
343 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
344 struct fl_flow_mask, rwork);
345
346 fl_mask_free(mask, false);
44a5cd43
PA		 347}
348
9994677c 349static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
05cd271f 350{
f48ef4d5 351 if (!refcount_dec_and_test(&mask->refcnt))
05cd271f
PB		 352 return false;
353
354 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
259e60f9
VB		 355
356 spin_lock(&head->masks_lock);
05cd271f 357 list_del_rcu(&mask->list);
259e60f9
VB		 358 spin_unlock(&head->masks_lock);
359
9994677c 360 tcf_queue_work(&mask->rwork, fl_mask_free_work);
05cd271f
PB		 361
362 return true;
77b9900e
JP		 363}
364
c049d56e
VB		 365static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
366{
367 /* Flower classifier only changes root pointer during init and destroy.
368 * Users must obtain reference to tcf_proto instance before calling its
369 * API, so tp->root pointer is protected from concurrent call to
370 * fl_destroy() by reference counting.
371 */
372 return rcu_dereference_raw(tp->root);
373}
374
0dadc117
CW		 375static void __fl_destroy_filter(struct cls_fl_filter *f)
376{
377 tcf_exts_destroy(&f->exts);
378 tcf_exts_put_net(&f->exts);
379 kfree(f);
380}
381
0552c8af 382static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 383{
aaa908ff
CW		 384 struct cls_fl_filter *f = container_of(to_rcu_work(work),
385 struct cls_fl_filter, rwork);
77b9900e 386
0dadc117 387 __fl_destroy_filter(f);
0552c8af
CW		 388}
389
1b0f8037 390static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8 391 bool rtnl_held, struct netlink_ext_ack *extack)
5b33f488 392{
de4784ca 393 struct tc_cls_flower_offload cls_flower = {};
208c0f4b 394 struct tcf_block *block = tp->chain->block;
5b33f488 395
c24e43d8
VB		 396 if (!rtnl_held)
397 rtnl_lock();
398
d6787147 399 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
de4784ca
JP		 400 cls_flower.command = TC_CLSFLOWER_DESTROY;
401 cls_flower.cookie = (unsigned long) f;
5b33f488 402
aeb3fecd 403 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
3d81e711 404 spin_lock(&tp->lock);
c049d56e 405 list_del_init(&f->hw_list);
caa72601 406 tcf_block_offload_dec(block, &f->flags);
3d81e711 407 spin_unlock(&tp->lock);
c24e43d8
VB		 408
409 if (!rtnl_held)
410 rtnl_unlock();
5b33f488
AV		 411}
412
e8eb36cd 413static int fl_hw_replace_filter(struct tcf_proto *tp,
c24e43d8 414 struct cls_fl_filter *f, bool rtnl_held,
41002038 415 struct netlink_ext_ack *extack)
5b33f488 416{
c049d56e 417 struct cls_fl_head *head = fl_head_dereference(tp);
de4784ca 418 struct tc_cls_flower_offload cls_flower = {};
208c0f4b 419 struct tcf_block *block = tp->chain->block;
717503b9 420 bool skip_sw = tc_skip_sw(f->flags);
c24e43d8
VB		 421 int err = 0;
422
423 if (!rtnl_held)
424 rtnl_lock();
5b33f488 425
e3ab786b 426 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
c24e43d8
VB		 427 if (!cls_flower.rule) {
428 err = -ENOMEM;
429 goto errout;
430 }
8f256622 431
d6787147 432 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
de4784ca
JP		 433 cls_flower.command = TC_CLSFLOWER_REPLACE;
434 cls_flower.cookie = (unsigned long) f;
8f256622
PNA		 435 cls_flower.rule->match.dissector = &f->mask->dissector;
436 cls_flower.rule->match.mask = &f->mask->key;
437 cls_flower.rule->match.key = &f->mkey;
384c181e 438 cls_flower.classid = f->res.classid;
5b33f488 439
3a7b6861
PNA		 440 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
441 if (err) {
442 kfree(cls_flower.rule);
c24e43d8 443 if (skip_sw)
1f15bb4f 444 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
c24e43d8
VB		 445 else
446 err = 0;
447 goto errout;
3a7b6861
PNA		 448 }
449
aeb3fecd 450 err = tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, skip_sw);
8f256622
PNA		 451 kfree(cls_flower.rule);
452
717503b9 453 if (err < 0) {
c24e43d8
VB		 454 fl_hw_destroy_filter(tp, f, true, NULL);
455 goto errout;
717503b9 456 } else if (err > 0) {
31533cba 457 f->in_hw_count = err;
c24e43d8 458 err = 0;
3d81e711 459 spin_lock(&tp->lock);
caa72601 460 tcf_block_offload_inc(block, &f->flags);
3d81e711 461 spin_unlock(&tp->lock);
717503b9
JP		 462 }
463
c24e43d8
VB		 464 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW)) {
465 err = -EINVAL;
466 goto errout;
467 }
717503b9 468
c049d56e
VB		 469 spin_lock(&tp->lock);
470 list_add(&f->hw_list, &head->hw_filters);
471 spin_unlock(&tp->lock);
c24e43d8
VB		 472errout:
473 if (!rtnl_held)
474 rtnl_unlock();
475
476 return err;
5b33f488
AV		 477}
478
c24e43d8
VB		 479static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
480 bool rtnl_held)
10cbc684 481{
de4784ca 482 struct tc_cls_flower_offload cls_flower = {};
208c0f4b 483 struct tcf_block *block = tp->chain->block;
10cbc684 484
c24e43d8
VB		 485 if (!rtnl_held)
486 rtnl_lock();
487
d6787147 488 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
de4784ca
JP		 489 cls_flower.command = TC_CLSFLOWER_STATS;
490 cls_flower.cookie = (unsigned long) f;
384c181e 491 cls_flower.classid = f->res.classid;
10cbc684 492
aeb3fecd 493 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
3b1903ef
PNA		 494
495 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
496 cls_flower.stats.pkts,
497 cls_flower.stats.lastused);
c24e43d8
VB		 498
499 if (!rtnl_held)
500 rtnl_unlock();
10cbc684
AV		 501}
502
06177558
VB		 503static void __fl_put(struct cls_fl_filter *f)
504{
505 if (!refcount_dec_and_test(&f->refcnt))
506 return;
507
508 if (tcf_exts_get_net(&f->exts))
509 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
510 else
511 __fl_destroy_filter(f);
512}
513
514static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
515{
516 struct cls_fl_filter *f;
517
518 rcu_read_lock();
519 f = idr_find(&head->handle_idr, handle);
520 if (f && !refcount_inc_not_zero(&f->refcnt))
521 f = NULL;
522 rcu_read_unlock();
523
524 return f;
525}
526
527static struct cls_fl_filter *fl_get_next_filter(struct tcf_proto *tp,
528 unsigned long *handle)
529{
530 struct cls_fl_head *head = fl_head_dereference(tp);
531 struct cls_fl_filter *f;
532
533 rcu_read_lock();
534 while ((f = idr_get_next_ul(&head->handle_idr, handle))) {
535 /* don't return filters that are being deleted */
536 if (refcount_inc_not_zero(&f->refcnt))
537 break;
538 ++(*handle);
539 }
540 rcu_read_unlock();
541
542 return f;
543}
544
b2552b8c 545static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8
VB		 546 bool *last, bool rtnl_held,
547 struct netlink_ext_ack *extack)
13fa876e 548{
e474619a 549 struct cls_fl_head *head = fl_head_dereference(tp);
c15ab236 550
b2552b8c
VB		 551 *last = false;
552
3d81e711
VB		 553 spin_lock(&tp->lock);
554 if (f->deleted) {
555 spin_unlock(&tp->lock);
b2552b8c 556 return -ENOENT;
3d81e711 557 }
b2552b8c
VB		 558
559 f->deleted = true;
560 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
561 f->mask->filter_ht_params);
9c160941 562 idr_remove(&head->handle_idr, f->handle);
13fa876e 563 list_del_rcu(&f->list);
3d81e711
VB		 564 spin_unlock(&tp->lock);
565
9994677c 566 *last = fl_mask_put(head, f->mask);
79685219 567 if (!tc_skip_hw(f->flags))
c24e43d8 568 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
13fa876e 569 tcf_unbind_filter(tp, &f->res);
06177558 570 __fl_put(f);
05cd271f 571
b2552b8c 572 return 0;
13fa876e
RD		 573}
574
d9363774
DB		 575static void fl_destroy_sleepable(struct work_struct *work)
576{
aaa908ff
CW		 577 struct cls_fl_head *head = container_of(to_rcu_work(work),
578 struct cls_fl_head,
579 rwork);
de9dc650
PB		 580
581 rhashtable_destroy(&head->ht);
d9363774
DB		 582 kfree(head);
583 module_put(THIS_MODULE);
584}
585
12db03b6
VB		 586static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
587 struct netlink_ext_ack *extack)
77b9900e 588{
e474619a 589 struct cls_fl_head *head = fl_head_dereference(tp);
05cd271f 590 struct fl_flow_mask *mask, *next_mask;
77b9900e 591 struct cls_fl_filter *f, *next;
b2552b8c 592 bool last;
77b9900e 593
05cd271f
PB		 594 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
595 list_for_each_entry_safe(f, next, &mask->filters, list) {
c24e43d8 596 __fl_delete(tp, f, &last, rtnl_held, extack);
b2552b8c 597 if (last)
05cd271f
PB		 598 break;
599 }
600 }
c15ab236 601 idr_destroy(&head->handle_idr);
d9363774
DB		 602
603 __module_get(THIS_MODULE);
aaa908ff 604 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
77b9900e
JP		 605}
606
06177558
VB		 607static void fl_put(struct tcf_proto *tp, void *arg)
608{
609 struct cls_fl_filter *f = arg;
610
611 __fl_put(f);
612}
613
8113c095 614static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e 615{
e474619a 616 struct cls_fl_head *head = fl_head_dereference(tp);
77b9900e 617
06177558 618 return __fl_get(head, handle);
77b9900e
JP		 619}
620
621static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
622 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
623 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
624 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
625 .len = IFNAMSIZ },
626 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
627 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
628 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
629 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
630 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
631 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
632 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
633 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
634 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
635 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
636 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
637 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
638 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
639 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
640 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
641 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 642 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
643 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 644 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
645 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
646 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 647 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
648 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
649 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
650 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
651 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
652 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
653 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
654 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
655 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 656 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
657 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
658 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
659 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 660 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
661 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
662 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
663 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 664 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
665 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
666 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
667 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 668 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
669 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 670 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
671 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
672 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
673 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
674 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
675 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 678 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
679 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
680 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
681 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
682 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
683 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
684 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
685 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
686 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
687 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 688 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
689 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
691 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
fdfc7dd6
JP		 692 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
693 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 694 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
695 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
696 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
697 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
d64efd09
JL		 698 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
699 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
700 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
0e2c17b6
OG		 701 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
702 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
703 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
704 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
0a6e7778
PJV		 705 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
706 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
707};
708
709static const struct nla_policy
710enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
711 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
712};
713
714static const struct nla_policy
715geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
716 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
717 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
718 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
719 .len = 128 },
77b9900e
JP		 720};
721
722static void fl_set_key_val(struct nlattr **tb,
723 void *val, int val_type,
724 void *mask, int mask_type, int len)
725{
726 if (!tb[val_type])
727 return;
728 memcpy(val, nla_data(tb[val_type]), len);
729 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
730 memset(mask, 0xff, len);
731 else
732 memcpy(mask, nla_data(tb[mask_type]), len);
733}
734
5c72299f
AN		 735static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
736 struct fl_flow_key *mask)
737{
738 fl_set_key_val(tb, &key->tp_min.dst,
739 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
740 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
741 fl_set_key_val(tb, &key->tp_max.dst,
742 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
743 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
744 fl_set_key_val(tb, &key->tp_min.src,
745 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
746 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
747 fl_set_key_val(tb, &key->tp_max.src,
748 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
749 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
750
751 if ((mask->tp_min.dst && mask->tp_max.dst &&
752 htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
753 (mask->tp_min.src && mask->tp_max.src &&
754 htons(key->tp_max.src) <= htons(key->tp_min.src)))
755 return -EINVAL;
756
757 return 0;
758}
759
1a7fca63
BL		 760static int fl_set_key_mpls(struct nlattr **tb,
761 struct flow_dissector_key_mpls *key_val,
762 struct flow_dissector_key_mpls *key_mask)
a577d8f7
BL		 763{
764 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
765 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
766 key_mask->mpls_ttl = MPLS_TTL_MASK;
767 }
768 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 769 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
770
771 if (bos & ~MPLS_BOS_MASK)
772 return -EINVAL;
773 key_val->mpls_bos = bos;
a577d8f7
BL		 774 key_mask->mpls_bos = MPLS_BOS_MASK;
775 }
776 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 777 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
778
779 if (tc & ~MPLS_TC_MASK)
780 return -EINVAL;
781 key_val->mpls_tc = tc;
a577d8f7
BL		 782 key_mask->mpls_tc = MPLS_TC_MASK;
783 }
784 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 785 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
786
787 if (label & ~MPLS_LABEL_MASK)
788 return -EINVAL;
789 key_val->mpls_label = label;
a577d8f7
BL		 790 key_mask->mpls_label = MPLS_LABEL_MASK;
791 }
1a7fca63 792 return 0;
a577d8f7
BL		 793}
794
9399ae9a 795static void fl_set_key_vlan(struct nlattr **tb,
aaab0834 796 __be16 ethertype,
d64efd09 797 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 798 struct flow_dissector_key_vlan *key_val,
799 struct flow_dissector_key_vlan *key_mask)
800{
801#define VLAN_PRIORITY_MASK 0x7
802
d64efd09 803 if (tb[vlan_id_key]) {
9399ae9a 804 key_val->vlan_id =
d64efd09 805 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
9399ae9a
HHZ		 806 key_mask->vlan_id = VLAN_VID_MASK;
807 }
d64efd09 808 if (tb[vlan_prio_key]) {
9399ae9a 809 key_val->vlan_priority =
d64efd09 810 nla_get_u8(tb[vlan_prio_key]) &
9399ae9a
HHZ		 811 VLAN_PRIORITY_MASK;
812 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
813 }
aaab0834
JL		 814 key_val->vlan_tpid = ethertype;
815 key_mask->vlan_tpid = cpu_to_be16(~0);
9399ae9a
HHZ		 816}
817
faa3ffce
OG		 818static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
819 u32 *dissector_key, u32 *dissector_mask,
820 u32 flower_flag_bit, u32 dissector_flag_bit)
821{
822 if (flower_mask & flower_flag_bit) {
823 *dissector_mask |= dissector_flag_bit;
824 if (flower_key & flower_flag_bit)
825 *dissector_key |= dissector_flag_bit;
826 }
827}
828
d9724772
OG		 829static int fl_set_key_flags(struct nlattr **tb,
830 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 831{
832 u32 key, mask;
833
d9724772
OG		 834 /* mask is mandatory for flags */
835 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
836 return -EINVAL;
faa3ffce
OG		 837
838 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 839 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 840
841 *flags_key = 0;
842 *flags_mask = 0;
843
844 fl_set_key_flag(key, mask, flags_key, flags_mask,
845 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 846 fl_set_key_flag(key, mask, flags_key, flags_mask,
847 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
848 FLOW_DIS_FIRST_FRAG);
d9724772
OG		 849
850 return 0;
faa3ffce
OG		 851}
852
0e2c17b6 853static void fl_set_key_ip(struct nlattr **tb, bool encap,
4d80cc0a
OG		 854 struct flow_dissector_key_ip *key,
855 struct flow_dissector_key_ip *mask)
856{
0e2c17b6
OG		 857 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
858 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
859 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
860 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
4d80cc0a 861
0e2c17b6
OG		 862 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
863 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
4d80cc0a
OG		 864}
865
0a6e7778
PJV		 866static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
867 int depth, int option_len,
868 struct netlink_ext_ack *extack)
869{
870 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
871 struct nlattr *class = NULL, *type = NULL, *data = NULL;
872 struct geneve_opt *opt;
873 int err, data_len = 0;
874
875 if (option_len > sizeof(struct geneve_opt))
876 data_len = option_len - sizeof(struct geneve_opt);
877
878 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
879 memset(opt, 0xff, option_len);
880 opt->length = data_len / 4;
881 opt->r1 = 0;
882 opt->r2 = 0;
883 opt->r3 = 0;
884
885 /* If no mask has been prodived we assume an exact match. */
886 if (!depth)
887 return sizeof(struct geneve_opt) + data_len;
888
889 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
890 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
891 return -EINVAL;
892 }
893
8cb08174
JB		 894 err = nla_parse_nested_deprecated(tb,
895 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
896 nla, geneve_opt_policy, extack);
0a6e7778
PJV		 897 if (err < 0)
898 return err;
899
900 /* We are not allowed to omit any of CLASS, TYPE or DATA
901 * fields from the key.
902 */
903 if (!option_len &&
904 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
905 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
906 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
907 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
908 return -EINVAL;
909 }
910
911 /* Omitting any of CLASS, TYPE or DATA fields is allowed
912 * for the mask.
913 */
914 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
915 int new_len = key->enc_opts.len;
916
917 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
918 data_len = nla_len(data);
919 if (data_len < 4) {
920 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
921 return -ERANGE;
922 }
923 if (data_len % 4) {
924 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
925 return -ERANGE;
926 }
927
928 new_len += sizeof(struct geneve_opt) + data_len;
929 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
930 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
931 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
932 return -ERANGE;
933 }
934 opt->length = data_len / 4;
935 memcpy(opt->opt_data, nla_data(data), data_len);
936 }
937
938 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
939 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
940 opt->opt_class = nla_get_be16(class);
941 }
942
943 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
944 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
945 opt->type = nla_get_u8(type);
946 }
947
948 return sizeof(struct geneve_opt) + data_len;
949}
950
951static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
952 struct fl_flow_key *mask,
953 struct netlink_ext_ack *extack)
954{
955 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
63c82997
JK		 956 int err, option_len, key_depth, msk_depth = 0;
957
8cb08174
JB		 958 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
959 TCA_FLOWER_KEY_ENC_OPTS_MAX,
960 enc_opts_policy, extack);
63c82997
JK		 961 if (err)
962 return err;
0a6e7778
PJV		 963
964 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
965
966 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
8cb08174
JB		 967 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
968 TCA_FLOWER_KEY_ENC_OPTS_MAX,
969 enc_opts_policy, extack);
63c82997
JK		 970 if (err)
971 return err;
972
0a6e7778
PJV		 973 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
974 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
975 }
976
977 nla_for_each_attr(nla_opt_key, nla_enc_key,
978 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
979 switch (nla_type(nla_opt_key)) {
980 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
981 option_len = 0;
982 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
983 option_len = fl_set_geneve_opt(nla_opt_key, key,
984 key_depth, option_len,
985 extack);
986 if (option_len < 0)
987 return option_len;
988
989 key->enc_opts.len += option_len;
990 /* At the same time we need to parse through the mask
991 * in order to verify exact and mask attribute lengths.
992 */
993 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
994 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
995 msk_depth, option_len,
996 extack);
997 if (option_len < 0)
998 return option_len;
999
1000 mask->enc_opts.len += option_len;
1001 if (key->enc_opts.len != mask->enc_opts.len) {
1002 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1003 return -EINVAL;
1004 }
1005
1006 if (msk_depth)
1007 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1008 break;
1009 default:
1010 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1011 return -EINVAL;
1012 }
1013 }
1014
1015 return 0;
1016}
1017
77b9900e 1018static int fl_set_key(struct net *net, struct nlattr **tb,
1057c55f
AA		 1019 struct fl_flow_key *key, struct fl_flow_key *mask,
1020 struct netlink_ext_ack *extack)
77b9900e 1021{
9399ae9a 1022 __be16 ethertype;
d9724772 1023 int ret = 0;
dd3aa3b5 1024#ifdef CONFIG_NET_CLS_IND
77b9900e 1025 if (tb[TCA_FLOWER_INDEV]) {
1057c55f 1026 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
77b9900e
JP		 1027 if (err < 0)
1028 return err;
1029 key->indev_ifindex = err;
1030 mask->indev_ifindex = 0xffffffff;
1031 }
dd3aa3b5 1032#endif
77b9900e
JP		 1033
1034 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1035 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1036 sizeof(key->eth.dst));
1037 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1038 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1039 sizeof(key->eth.src));
66530bdf 1040
0b498a52 1041 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 1042 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1043
aaab0834 1044 if (eth_type_vlan(ethertype)) {
d64efd09
JL		 1045 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1046 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1047 &mask->vlan);
1048
5e9a0fe4
JL		 1049 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1050 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1051 if (eth_type_vlan(ethertype)) {
1052 fl_set_key_vlan(tb, ethertype,
1053 TCA_FLOWER_KEY_CVLAN_ID,
1054 TCA_FLOWER_KEY_CVLAN_PRIO,
1055 &key->cvlan, &mask->cvlan);
1056 fl_set_key_val(tb, &key->basic.n_proto,
1057 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1058 &mask->basic.n_proto,
1059 TCA_FLOWER_UNSPEC,
1060 sizeof(key->basic.n_proto));
1061 } else {
1062 key->basic.n_proto = ethertype;
1063 mask->basic.n_proto = cpu_to_be16(~0);
1064 }
d64efd09 1065 }
0b498a52
AB		 1066 } else {
1067 key->basic.n_proto = ethertype;
1068 mask->basic.n_proto = cpu_to_be16(~0);
1069 }
9399ae9a 1070 }
66530bdf 1071
77b9900e
JP		 1072 if (key->basic.n_proto == htons(ETH_P_IP) ||
1073 key->basic.n_proto == htons(ETH_P_IPV6)) {
1074 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1075 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1076 sizeof(key->basic.ip_proto));
0e2c17b6 1077 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
77b9900e 1078 }
66530bdf
JHS		 1079
1080 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1081 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1082 mask->control.addr_type = ~0;
77b9900e
JP		 1083 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1084 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1085 sizeof(key->ipv4.src));
1086 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1087 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1088 sizeof(key->ipv4.dst));
66530bdf
JHS		 1089 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1090 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1091 mask->control.addr_type = ~0;
77b9900e
JP		 1092 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1093 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1094 sizeof(key->ipv6.src));
1095 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1096 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1097 sizeof(key->ipv6.dst));
1098 }
66530bdf 1099
77b9900e
JP		 1100 if (key->basic.ip_proto == IPPROTO_TCP) {
1101 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1102 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1103 sizeof(key->tp.src));
1104 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1105 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 1106 sizeof(key->tp.dst));
fdfc7dd6
JP		 1107 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1108 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1109 sizeof(key->tcp.flags));
77b9900e
JP		 1110 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1111 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1112 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1113 sizeof(key->tp.src));
1114 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1115 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 1116 sizeof(key->tp.dst));
5976c5f4
SH		 1117 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1118 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1119 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1120 sizeof(key->tp.src));
1121 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1122 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1123 sizeof(key->tp.dst));
7b684884
SH		 1124 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1125 key->basic.ip_proto == IPPROTO_ICMP) {
1126 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1127 &mask->icmp.type,
1128 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1129 sizeof(key->icmp.type));
1130 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1131 &mask->icmp.code,
1132 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1133 sizeof(key->icmp.code));
1134 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1135 key->basic.ip_proto == IPPROTO_ICMPV6) {
1136 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1137 &mask->icmp.type,
1138 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1139 sizeof(key->icmp.type));
040587af 1140 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 1141 &mask->icmp.code,
040587af 1142 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 1143 sizeof(key->icmp.code));
a577d8f7
BL		 1144 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1145 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1a7fca63
BL		 1146 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1147 if (ret)
1148 return ret;
99d31326
SH		 1149 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1150 key->basic.n_proto == htons(ETH_P_RARP)) {
1151 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1152 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1153 sizeof(key->arp.sip));
1154 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1155 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1156 sizeof(key->arp.tip));
1157 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1158 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1159 sizeof(key->arp.op));
1160 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1161 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1162 sizeof(key->arp.sha));
1163 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1164 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1165 sizeof(key->arp.tha));
77b9900e
JP		 1166 }
1167
5c72299f
AN		 1168 if (key->basic.ip_proto == IPPROTO_TCP ||
1169 key->basic.ip_proto == IPPROTO_UDP ||
1170 key->basic.ip_proto == IPPROTO_SCTP) {
1171 ret = fl_set_key_port_range(tb, key, mask);
1172 if (ret)
1173 return ret;
1174 }
1175
bc3103f1
AV		 1176 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1177 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1178 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1179 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1180 fl_set_key_val(tb, &key->enc_ipv4.src,
1181 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1182 &mask->enc_ipv4.src,
1183 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1184 sizeof(key->enc_ipv4.src));
1185 fl_set_key_val(tb, &key->enc_ipv4.dst,
1186 TCA_FLOWER_KEY_ENC_IPV4_DST,
1187 &mask->enc_ipv4.dst,
1188 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1189 sizeof(key->enc_ipv4.dst));
1190 }
1191
1192 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1193 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1194 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1195 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1196 fl_set_key_val(tb, &key->enc_ipv6.src,
1197 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1198 &mask->enc_ipv6.src,
1199 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1200 sizeof(key->enc_ipv6.src));
1201 fl_set_key_val(tb, &key->enc_ipv6.dst,
1202 TCA_FLOWER_KEY_ENC_IPV6_DST,
1203 &mask->enc_ipv6.dst,
1204 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1205 sizeof(key->enc_ipv6.dst));
1206 }
1207
1208 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1209 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 1210 sizeof(key->enc_key_id.keyid));
1211
f4d997fd
HHZ		 1212 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1213 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1214 sizeof(key->enc_tp.src));
1215
1216 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1217 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1218 sizeof(key->enc_tp.dst));
1219
0e2c17b6
OG		 1220 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1221
0a6e7778
PJV		 1222 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1223 ret = fl_set_enc_opt(tb, key, mask, extack);
1224 if (ret)
1225 return ret;
1226 }
1227
d9724772
OG		 1228 if (tb[TCA_FLOWER_KEY_FLAGS])
1229 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 1230
d9724772 1231 return ret;
77b9900e
JP		 1232}
1233
05cd271f
PB		 1234static void fl_mask_copy(struct fl_flow_mask *dst,
1235 struct fl_flow_mask *src)
77b9900e 1236{
05cd271f
PB		 1237 const void *psrc = fl_key_get_start(&src->key, src);
1238 void *pdst = fl_key_get_start(&dst->key, src);
77b9900e 1239
05cd271f
PB		 1240 memcpy(pdst, psrc, fl_mask_range(src));
1241 dst->range = src->range;
77b9900e
JP		 1242}
1243
1244static const struct rhashtable_params fl_ht_params = {
1245 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1246 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1247 .automatic_shrinking = true,
1248};
1249
05cd271f 1250static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
77b9900e 1251{
05cd271f
PB		 1252 mask->filter_ht_params = fl_ht_params;
1253 mask->filter_ht_params.key_len = fl_mask_range(mask);
1254 mask->filter_ht_params.key_offset += mask->range.start;
77b9900e 1255
05cd271f 1256 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
77b9900e
JP		 1257}
1258
1259#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
cb205a81 1260#define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
77b9900e 1261
339ba878
HHZ		 1262#define FL_KEY_IS_MASKED(mask, member) \
1263 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1264 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 1265
1266#define FL_KEY_SET(keys, cnt, id, member) \
1267 do { \
1268 keys[cnt].key_id = id; \
1269 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1270 cnt++; \
1271 } while(0);
1272
339ba878 1273#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 1274 do { \
339ba878 1275 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 1276 FL_KEY_SET(keys, cnt, id, member); \
1277 } while(0);
1278
33fb5cba
JP		 1279static void fl_init_dissector(struct flow_dissector *dissector,
1280 struct fl_flow_key *mask)
77b9900e
JP		 1281{
1282 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1283 size_t cnt = 0;
1284
42aecaa9 1285 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 1286 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
33fb5cba 1287 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1288 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
33fb5cba 1289 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1290 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
33fb5cba 1291 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1292 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
5c72299f
AN		 1293 if (FL_KEY_IS_MASKED(mask, tp) ||
1294 FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1295 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
33fb5cba 1296 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
4d80cc0a 1297 FLOW_DISSECTOR_KEY_IP, ip);
33fb5cba 1298 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
fdfc7dd6 1299 FLOW_DISSECTOR_KEY_TCP, tcp);
33fb5cba 1300 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
7b684884 1301 FLOW_DISSECTOR_KEY_ICMP, icmp);
33fb5cba 1302 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
99d31326 1303 FLOW_DISSECTOR_KEY_ARP, arp);
33fb5cba 1304 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
a577d8f7 1305 FLOW_DISSECTOR_KEY_MPLS, mpls);
33fb5cba 1306 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
9399ae9a 1307 FLOW_DISSECTOR_KEY_VLAN, vlan);
33fb5cba 1308 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
d64efd09 1309 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
33fb5cba 1310 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1311 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
33fb5cba 1312 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1313 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
33fb5cba 1314 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1315 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
33fb5cba
JP		 1316 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1317 FL_KEY_IS_MASKED(mask, enc_ipv6))
519d1052
HHZ		 1318 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1319 enc_control);
33fb5cba 1320 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
f4d997fd 1321 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
33fb5cba 1322 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
0e2c17b6 1323 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
0a6e7778
PJV		 1324 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1325 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
77b9900e 1326
33fb5cba 1327 skb_flow_dissector_init(dissector, keys, cnt);
05cd271f
PB		 1328}
1329
1330static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1331 struct fl_flow_mask *mask)
1332{
1333 struct fl_flow_mask *newmask;
1334 int err;
1335
1336 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1337 if (!newmask)
1338 return ERR_PTR(-ENOMEM);
1339
1340 fl_mask_copy(newmask, mask);
1341
5c72299f
AN		 1342 if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1343 (newmask->key.tp_min.src && newmask->key.tp_max.src))
1344 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1345
05cd271f
PB		 1346 err = fl_init_mask_hashtable(newmask);
1347 if (err)
1348 goto errout_free;
1349
33fb5cba 1350 fl_init_dissector(&newmask->dissector, &newmask->key);
05cd271f
PB		 1351
1352 INIT_LIST_HEAD_RCU(&newmask->filters);
1353
f48ef4d5 1354 refcount_set(&newmask->refcnt, 1);
195c234d
VB		 1355 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1356 &newmask->ht_node, mask_ht_params);
05cd271f
PB		 1357 if (err)
1358 goto errout_destroy;
1359
259e60f9 1360 spin_lock(&head->masks_lock);
05cd271f 1361 list_add_tail_rcu(&newmask->list, &head->masks);
259e60f9 1362 spin_unlock(&head->masks_lock);
05cd271f
PB		 1363
1364 return newmask;
1365
1366errout_destroy:
1367 rhashtable_destroy(&newmask->ht);
1368errout_free:
1369 kfree(newmask);
1370
1371 return ERR_PTR(err);
77b9900e
JP		 1372}
1373
1374static int fl_check_assign_mask(struct cls_fl_head *head,
05cd271f
PB		 1375 struct cls_fl_filter *fnew,
1376 struct cls_fl_filter *fold,
77b9900e
JP		 1377 struct fl_flow_mask *mask)
1378{
05cd271f 1379 struct fl_flow_mask *newmask;
f48ef4d5 1380 int ret = 0;
77b9900e 1381
f48ef4d5 1382 rcu_read_lock();
195c234d
VB		 1383
1384 /* Insert mask as temporary node to prevent concurrent creation of mask
1385 * with same key. Any concurrent lookups with same key will return
99815f50 1386 * -EAGAIN because mask's refcnt is zero.
195c234d
VB		 1387 */
1388 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1389 &mask->ht_node,
1390 mask_ht_params);
05cd271f 1391 if (!fnew->mask) {
f48ef4d5
VB		 1392 rcu_read_unlock();
1393
195c234d
VB		 1394 if (fold) {
1395 ret = -EINVAL;
1396 goto errout_cleanup;
1397 }
77b9900e 1398
05cd271f 1399 newmask = fl_create_new_mask(head, mask);
195c234d
VB		 1400 if (IS_ERR(newmask)) {
1401 ret = PTR_ERR(newmask);
1402 goto errout_cleanup;
1403 }
77b9900e 1404
05cd271f 1405 fnew->mask = newmask;
f48ef4d5 1406 return 0;
195c234d
VB		 1407 } else if (IS_ERR(fnew->mask)) {
1408 ret = PTR_ERR(fnew->mask);
f6521c58 1409 } else if (fold && fold->mask != fnew->mask) {
f48ef4d5
VB		 1410 ret = -EINVAL;
1411 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1412 /* Mask was deleted concurrently, try again */
1413 ret = -EAGAIN;
05cd271f 1414 }
f48ef4d5
VB		 1415 rcu_read_unlock();
1416 return ret;
195c234d
VB		 1417
1418errout_cleanup:
1419 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1420 mask_ht_params);
195c234d 1421 return ret;
77b9900e
JP		 1422}
1423
1424static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1425 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1426 unsigned long base, struct nlattr **tb,
50a56190 1427 struct nlattr *est, bool ovr,
c24e43d8 1428 struct fl_flow_tmplt *tmplt, bool rtnl_held,
50a56190 1429 struct netlink_ext_ack *extack)
77b9900e 1430{
77b9900e
JP		 1431 int err;
1432
c24e43d8 1433 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
ec6743a1 1434 extack);
77b9900e
JP		 1435 if (err < 0)
1436 return err;
1437
1438 if (tb[TCA_FLOWER_CLASSID]) {
1439 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
c24e43d8
VB		 1440 if (!rtnl_held)
1441 rtnl_lock();
77b9900e 1442 tcf_bind_filter(tp, &f->res, base);
c24e43d8
VB		 1443 if (!rtnl_held)
1444 rtnl_unlock();
77b9900e
JP		 1445 }
1446
1057c55f 1447 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
77b9900e 1448 if (err)
45507529 1449 return err;
77b9900e
JP		 1450
1451 fl_mask_update_range(mask);
1452 fl_set_masked_key(&f->mkey, &f->key, mask);
1453
b95ec7eb
JP		 1454 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1455 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1456 return -EINVAL;
1457 }
1458
77b9900e 1459 return 0;
77b9900e
JP		 1460}
1461
1f17f774
VB		 1462static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1463 struct cls_fl_filter *fold,
1464 bool *in_ht)
1465{
1466 struct fl_flow_mask *mask = fnew->mask;
1467 int err;
1468
9e35552a
VB		 1469 err = rhashtable_lookup_insert_fast(&mask->ht,
1470 &fnew->ht_node,
1471 mask->filter_ht_params);
1f17f774
VB		 1472 if (err) {
1473 *in_ht = false;
1474 /* It is okay if filter with same key exists when
1475 * overwriting.
1476 */
1477 return fold && err == -EEXIST ? 0 : err;
1478 }
1479
1480 *in_ht = true;
1481 return 0;
1482}
1483
77b9900e
JP		 1484static int fl_change(struct net *net, struct sk_buff *in_skb,
1485 struct tcf_proto *tp, unsigned long base,
1486 u32 handle, struct nlattr **tca,
12db03b6
VB		 1487 void **arg, bool ovr, bool rtnl_held,
1488 struct netlink_ext_ack *extack)
77b9900e 1489{
e474619a 1490 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 1491 struct cls_fl_filter *fold = *arg;
77b9900e 1492 struct cls_fl_filter *fnew;
2cddd201 1493 struct fl_flow_mask *mask;
39b7b6a6 1494 struct nlattr **tb;
1f17f774 1495 bool in_ht;
77b9900e
JP		 1496 int err;
1497
06177558
VB		 1498 if (!tca[TCA_OPTIONS]) {
1499 err = -EINVAL;
1500 goto errout_fold;
1501 }
77b9900e 1502
2cddd201 1503 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
06177558
VB		 1504 if (!mask) {
1505 err = -ENOBUFS;
1506 goto errout_fold;
1507 }
39b7b6a6 1508
2cddd201
IV		 1509 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1510 if (!tb) {
1511 err = -ENOBUFS;
1512 goto errout_mask_alloc;
1513 }
1514
8cb08174
JB		 1515 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1516 tca[TCA_OPTIONS], fl_policy, NULL);
77b9900e 1517 if (err < 0)
39b7b6a6 1518 goto errout_tb;
77b9900e 1519
39b7b6a6
AB		 1520 if (fold && handle && fold->handle != handle) {
1521 err = -EINVAL;
1522 goto errout_tb;
1523 }
77b9900e
JP		 1524
1525 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 1526 if (!fnew) {
1527 err = -ENOBUFS;
1528 goto errout_tb;
1529 }
c049d56e 1530 INIT_LIST_HEAD(&fnew->hw_list);
06177558 1531 refcount_set(&fnew->refcnt, 1);
77b9900e 1532
14215108 1533 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
b9a24bb7
WC		 1534 if (err < 0)
1535 goto errout;
77b9900e 1536
e69985c6
AV		 1537 if (tb[TCA_FLOWER_FLAGS]) {
1538 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1539
1540 if (!tc_flags_valid(fnew->flags)) {
1541 err = -EINVAL;
ecb3dea4 1542 goto errout;
e69985c6
AV		 1543 }
1544 }
5b33f488 1545
2cddd201 1546 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
c24e43d8 1547 tp->chain->tmplt_priv, rtnl_held, extack);
77b9900e 1548 if (err)
ecb3dea4 1549 goto errout;
77b9900e 1550
2cddd201 1551 err = fl_check_assign_mask(head, fnew, fold, mask);
77b9900e 1552 if (err)
ecb3dea4
VB		 1553 goto errout;
1554
1f17f774
VB		 1555 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1556 if (err)
1557 goto errout_mask;
1558
79685219 1559 if (!tc_skip_hw(fnew->flags)) {
c24e43d8 1560 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
79685219 1561 if (err)
1f17f774 1562 goto errout_ht;
79685219 1563 }
5b33f488 1564
55593960
OG		 1565 if (!tc_in_hw(fnew->flags))
1566 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1567
3d81e711
VB		 1568 spin_lock(&tp->lock);
1569
272ffaad
VB		 1570 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
1571 * proto again or create new one, if necessary.
1572 */
1573 if (tp->deleting) {
1574 err = -EAGAIN;
1575 goto errout_hw;
1576 }
1577
5b33f488 1578 if (fold) {
b2552b8c
VB		 1579 /* Fold filter was deleted concurrently. Retry lookup. */
1580 if (fold->deleted) {
1581 err = -EAGAIN;
1582 goto errout_hw;
1583 }
1584
620da486
VB		 1585 fnew->handle = handle;
1586
1f17f774
VB		 1587 if (!in_ht) {
1588 struct rhashtable_params params =
1589 fnew->mask->filter_ht_params;
1590
1591 err = rhashtable_insert_fast(&fnew->mask->ht,
1592 &fnew->ht_node,
1593 params);
1594 if (err)
1595 goto errout_hw;
1596 in_ht = true;
1597 }
620da486 1598
c049d56e 1599 refcount_inc(&fnew->refcnt);
599d2570
RD		 1600 rhashtable_remove_fast(&fold->mask->ht,
1601 &fold->ht_node,
1602 fold->mask->filter_ht_params);
234a4624 1603 idr_replace(&head->handle_idr, fnew, fnew->handle);
ff3532f2 1604 list_replace_rcu(&fold->list, &fnew->list);
b2552b8c 1605 fold->deleted = true;
620da486 1606
3d81e711
VB		 1607 spin_unlock(&tp->lock);
1608
9994677c 1609 fl_mask_put(head, fold->mask);
620da486 1610 if (!tc_skip_hw(fold->flags))
c24e43d8 1611 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
77b9900e 1612 tcf_unbind_filter(tp, &fold->res);
06177558
VB		 1613 /* Caller holds reference to fold, so refcnt is always > 0
1614 * after this.
1615 */
1616 refcount_dec(&fold->refcnt);
1617 __fl_put(fold);
77b9900e 1618 } else {
620da486
VB		 1619 if (handle) {
1620 /* user specifies a handle and it doesn't exist */
1621 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1622 handle, GFP_ATOMIC);
9a2d9389
VB		 1623
1624 /* Filter with specified handle was concurrently
1625 * inserted after initial check in cls_api. This is not
1626 * necessarily an error if NLM_F_EXCL is not set in
1627 * message flags. Returning EAGAIN will cause cls_api to
1628 * try to update concurrently inserted rule.
1629 */
1630 if (err == -ENOSPC)
1631 err = -EAGAIN;
620da486
VB		 1632 } else {
1633 handle = 1;
1634 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1635 INT_MAX, GFP_ATOMIC);
1636 }
1637 if (err)
1638 goto errout_hw;
1639
c049d56e 1640 refcount_inc(&fnew->refcnt);
620da486 1641 fnew->handle = handle;
05cd271f 1642 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
3d81e711 1643 spin_unlock(&tp->lock);
77b9900e
JP		 1644 }
1645
620da486
VB		 1646 *arg = fnew;
1647
39b7b6a6 1648 kfree(tb);
99815f50 1649 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
77b9900e
JP		 1650 return 0;
1651
c049d56e
VB		 1652errout_ht:
1653 spin_lock(&tp->lock);
620da486 1654errout_hw:
c049d56e 1655 fnew->deleted = true;
3d81e711 1656 spin_unlock(&tp->lock);
620da486 1657 if (!tc_skip_hw(fnew->flags))
c24e43d8 1658 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1f17f774
VB		 1659 if (in_ht)
1660 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1661 fnew->mask->filter_ht_params);
ecb3dea4 1662errout_mask:
9994677c 1663 fl_mask_put(head, fnew->mask);
77b9900e 1664errout:
c049d56e 1665 __fl_put(fnew);
39b7b6a6
AB		 1666errout_tb:
1667 kfree(tb);
2cddd201 1668errout_mask_alloc:
99815f50 1669 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
06177558
VB		 1670errout_fold:
1671 if (fold)
1672 __fl_put(fold);
77b9900e
JP		 1673 return err;
1674}
1675
571acf21 1676static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
12db03b6 1677 bool rtnl_held, struct netlink_ext_ack *extack)
77b9900e 1678{
e474619a 1679 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 1680 struct cls_fl_filter *f = arg;
b2552b8c
VB		 1681 bool last_on_mask;
1682 int err = 0;
77b9900e 1683
c24e43d8 1684 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
05cd271f 1685 *last = list_empty(&head->masks);
06177558
VB		 1686 __fl_put(f);
1687
b2552b8c 1688 return err;
77b9900e
JP		 1689}
1690
12db03b6
VB		 1691static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
1692 bool rtnl_held)
77b9900e 1693{
77b9900e 1694 struct cls_fl_filter *f;
05cd271f 1695
01683a14
VB		 1696 arg->count = arg->skip;
1697
06177558 1698 while ((f = fl_get_next_filter(tp, &arg->cookie)) != NULL) {
01683a14 1699 if (arg->fn(tp, f, arg) < 0) {
06177558 1700 __fl_put(f);
01683a14
VB		 1701 arg->stop = 1;
1702 break;
05cd271f 1703 }
06177558
VB		 1704 __fl_put(f);
1705 arg->cookie++;
01683a14 1706 arg->count++;
77b9900e
JP		 1707 }
1708}
1709
c049d56e
VB		 1710static struct cls_fl_filter *
1711fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
1712{
1713 struct cls_fl_head *head = fl_head_dereference(tp);
1714
1715 spin_lock(&tp->lock);
1716 if (list_empty(&head->hw_filters)) {
1717 spin_unlock(&tp->lock);
1718 return NULL;
1719 }
1720
1721 if (!f)
1722 f = list_entry(&head->hw_filters, struct cls_fl_filter,
1723 hw_list);
1724 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
1725 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
1726 spin_unlock(&tp->lock);
1727 return f;
1728 }
1729 }
1730
1731 spin_unlock(&tp->lock);
1732 return NULL;
1733}
1734
31533cba
JH		 1735static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
1736 void *cb_priv, struct netlink_ext_ack *extack)
1737{
31533cba
JH		 1738 struct tc_cls_flower_offload cls_flower = {};
1739 struct tcf_block *block = tp->chain->block;
c049d56e 1740 struct cls_fl_filter *f = NULL;
31533cba
JH		 1741 int err;
1742
c049d56e
VB		 1743 /* hw_filters list can only be changed by hw offload functions after
1744 * obtaining rtnl lock. Make sure it is not changed while reoffload is
1745 * iterating it.
1746 */
1747 ASSERT_RTNL();
3a7b6861 1748
c049d56e 1749 while ((f = fl_get_next_hw_filter(tp, f, add))) {
95e27a4d
JH		 1750 cls_flower.rule =
1751 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
1752 if (!cls_flower.rule) {
1753 __fl_put(f);
1754 return -ENOMEM;
1755 }
31533cba 1756
95e27a4d 1757 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
d6787147 1758 extack);
95e27a4d
JH		 1759 cls_flower.command = add ?
1760 TC_CLSFLOWER_REPLACE : TC_CLSFLOWER_DESTROY;
1761 cls_flower.cookie = (unsigned long)f;
1762 cls_flower.rule->match.dissector = &f->mask->dissector;
1763 cls_flower.rule->match.mask = &f->mask->key;
1764 cls_flower.rule->match.key = &f->mkey;
1765
1766 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
1767 if (err) {
8f256622 1768 kfree(cls_flower.rule);
95e27a4d
JH		 1769 if (tc_skip_sw(f->flags)) {
1770 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
1771 __fl_put(f);
1772 return err;
31533cba 1773 }
95e27a4d
JH		 1774 goto next_flow;
1775 }
31533cba 1776
95e27a4d
JH		 1777 cls_flower.classid = f->res.classid;
1778
1779 err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
1780 kfree(cls_flower.rule);
1781
1782 if (err) {
1783 if (add && tc_skip_sw(f->flags)) {
1784 __fl_put(f);
1785 return err;
1786 }
1787 goto next_flow;
31533cba 1788 }
95e27a4d
JH		 1789
1790 spin_lock(&tp->lock);
1791 tc_cls_offload_cnt_update(block, &f->in_hw_count, &f->flags,
1792 add);
1793 spin_unlock(&tp->lock);
1794next_flow:
95e27a4d 1795 __fl_put(f);
31533cba
JH		 1796 }
1797
1798 return 0;
1799}
1800
8f256622
PNA		 1801static int fl_hw_create_tmplt(struct tcf_chain *chain,
1802 struct fl_flow_tmplt *tmplt)
34738452
JP		 1803{
1804 struct tc_cls_flower_offload cls_flower = {};
1805 struct tcf_block *block = chain->block;
34738452 1806
e3ab786b 1807 cls_flower.rule = flow_rule_alloc(0);
8f256622
PNA		 1808 if (!cls_flower.rule)
1809 return -ENOMEM;
1810
34738452
JP		 1811 cls_flower.common.chain_index = chain->index;
1812 cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE;
1813 cls_flower.cookie = (unsigned long) tmplt;
8f256622
PNA		 1814 cls_flower.rule->match.dissector = &tmplt->dissector;
1815 cls_flower.rule->match.mask = &tmplt->mask;
1816 cls_flower.rule->match.key = &tmplt->dummy_key;
34738452
JP		 1817
1818 /* We don't care if driver (any of them) fails to handle this
1819 * call. It serves just as a hint for it.
1820 */
aeb3fecd 1821 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
8f256622
PNA		 1822 kfree(cls_flower.rule);
1823
1824 return 0;
34738452
JP		 1825}
1826
1827static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
1828 struct fl_flow_tmplt *tmplt)
1829{
1830 struct tc_cls_flower_offload cls_flower = {};
1831 struct tcf_block *block = chain->block;
1832
1833 cls_flower.common.chain_index = chain->index;
1834 cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY;
1835 cls_flower.cookie = (unsigned long) tmplt;
1836
aeb3fecd 1837 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
34738452
JP		 1838}
1839
b95ec7eb
JP		 1840static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
1841 struct nlattr **tca,
1842 struct netlink_ext_ack *extack)
1843{
1844 struct fl_flow_tmplt *tmplt;
1845 struct nlattr **tb;
1846 int err;
1847
1848 if (!tca[TCA_OPTIONS])
1849 return ERR_PTR(-EINVAL);
1850
1851 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1852 if (!tb)
1853 return ERR_PTR(-ENOBUFS);
8cb08174
JB		 1854 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1855 tca[TCA_OPTIONS], fl_policy, NULL);
b95ec7eb
JP		 1856 if (err)
1857 goto errout_tb;
1858
1859 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1cbc36a5
DC		 1860 if (!tmplt) {
1861 err = -ENOMEM;
b95ec7eb 1862 goto errout_tb;
1cbc36a5 1863 }
b95ec7eb
JP		 1864 tmplt->chain = chain;
1865 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
1866 if (err)
1867 goto errout_tmplt;
b95ec7eb
JP		 1868
1869 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
1870
8f256622
PNA		 1871 err = fl_hw_create_tmplt(chain, tmplt);
1872 if (err)
1873 goto errout_tmplt;
34738452 1874
8f256622 1875 kfree(tb);
b95ec7eb
JP		 1876 return tmplt;
1877
1878errout_tmplt:
1879 kfree(tmplt);
1880errout_tb:
1881 kfree(tb);
1882 return ERR_PTR(err);
1883}
1884
ec3ed293
VB		 1885static void fl_tmplt_destroy(void *tmplt_priv)
1886{
1887 struct fl_flow_tmplt *tmplt = tmplt_priv;
1888
95278dda
CW		 1889 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
1890 kfree(tmplt);
ec3ed293
VB		 1891}
1892
77b9900e
JP		 1893static int fl_dump_key_val(struct sk_buff *skb,
1894 void *val, int val_type,
1895 void *mask, int mask_type, int len)
1896{
1897 int err;
1898
1899 if (!memchr_inv(mask, 0, len))
1900 return 0;
1901 err = nla_put(skb, val_type, len, val);
1902 if (err)
1903 return err;
1904 if (mask_type != TCA_FLOWER_UNSPEC) {
1905 err = nla_put(skb, mask_type, len, mask);
1906 if (err)
1907 return err;
1908 }
1909 return 0;
1910}
1911
5c72299f
AN		 1912static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
1913 struct fl_flow_key *mask)
1914{
1915 if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
1916 &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
1917 sizeof(key->tp_min.dst)) ||
1918 fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
1919 &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
1920 sizeof(key->tp_max.dst)) ||
1921 fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
1922 &mask->tp_min.src, TCA_FLOWER_UNSPEC,
1923 sizeof(key->tp_min.src)) ||
1924 fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
1925 &mask->tp_max.src, TCA_FLOWER_UNSPEC,
1926 sizeof(key->tp_max.src)))
1927 return -1;
1928
1929 return 0;
1930}
1931
a577d8f7
BL		 1932static int fl_dump_key_mpls(struct sk_buff *skb,
1933 struct flow_dissector_key_mpls *mpls_key,
1934 struct flow_dissector_key_mpls *mpls_mask)
1935{
1936 int err;
1937
1938 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1939 return 0;
1940 if (mpls_mask->mpls_ttl) {
1941 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
1942 mpls_key->mpls_ttl);
1943 if (err)
1944 return err;
1945 }
1946 if (mpls_mask->mpls_tc) {
1947 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
1948 mpls_key->mpls_tc);
1949 if (err)
1950 return err;
1951 }
1952 if (mpls_mask->mpls_label) {
1953 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
1954 mpls_key->mpls_label);
1955 if (err)
1956 return err;
1957 }
1958 if (mpls_mask->mpls_bos) {
1959 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
1960 mpls_key->mpls_bos);
1961 if (err)
1962 return err;
1963 }
1964 return 0;
1965}
1966
0e2c17b6 1967static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
4d80cc0a
OG		 1968 struct flow_dissector_key_ip *key,
1969 struct flow_dissector_key_ip *mask)
1970{
0e2c17b6
OG		 1971 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1972 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1973 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1974 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1975
1976 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
1977 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
4d80cc0a
OG		 1978 return -1;
1979
1980 return 0;
1981}
1982
9399ae9a 1983static int fl_dump_key_vlan(struct sk_buff *skb,
d64efd09 1984 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 1985 struct flow_dissector_key_vlan *vlan_key,
1986 struct flow_dissector_key_vlan *vlan_mask)
1987{
1988 int err;
1989
1990 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
1991 return 0;
1992 if (vlan_mask->vlan_id) {
d64efd09 1993 err = nla_put_u16(skb, vlan_id_key,
9399ae9a
HHZ		 1994 vlan_key->vlan_id);
1995 if (err)
1996 return err;
1997 }
1998 if (vlan_mask->vlan_priority) {
d64efd09 1999 err = nla_put_u8(skb, vlan_prio_key,
9399ae9a
HHZ		 2000 vlan_key->vlan_priority);
2001 if (err)
2002 return err;
2003 }
2004 return 0;
2005}
2006
faa3ffce
OG		 2007static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2008 u32 *flower_key, u32 *flower_mask,
2009 u32 flower_flag_bit, u32 dissector_flag_bit)
2010{
2011 if (dissector_mask & dissector_flag_bit) {
2012 *flower_mask |= flower_flag_bit;
2013 if (dissector_key & dissector_flag_bit)
2014 *flower_key |= flower_flag_bit;
2015 }
2016}
2017
2018static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2019{
2020 u32 key, mask;
2021 __be32 _key, _mask;
2022 int err;
2023
2024 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2025 return 0;
2026
2027 key = 0;
2028 mask = 0;
2029
2030 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2031 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 2032 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2033 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2034 FLOW_DIS_FIRST_FRAG);
faa3ffce
OG		 2035
2036 _key = cpu_to_be32(key);
2037 _mask = cpu_to_be32(mask);
2038
2039 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2040 if (err)
2041 return err;
2042
2043 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2044}
2045
0a6e7778
PJV		 2046static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2047 struct flow_dissector_key_enc_opts *enc_opts)
2048{
2049 struct geneve_opt *opt;
2050 struct nlattr *nest;
2051 int opt_off = 0;
2052
ae0be8de 2053 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
0a6e7778
PJV		 2054 if (!nest)
2055 goto nla_put_failure;
2056
2057 while (enc_opts->len > opt_off) {
2058 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2059
2060 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2061 opt->opt_class))
2062 goto nla_put_failure;
2063 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2064 opt->type))
2065 goto nla_put_failure;
2066 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2067 opt->length * 4, opt->opt_data))
2068 goto nla_put_failure;
2069
2070 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2071 }
2072 nla_nest_end(skb, nest);
2073 return 0;
2074
2075nla_put_failure:
2076 nla_nest_cancel(skb, nest);
2077 return -EMSGSIZE;
2078}
2079
2080static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2081 struct flow_dissector_key_enc_opts *enc_opts)
2082{
2083 struct nlattr *nest;
2084 int err;
2085
2086 if (!enc_opts->len)
2087 return 0;
2088
ae0be8de 2089 nest = nla_nest_start_noflag(skb, enc_opt_type);
0a6e7778
PJV		 2090 if (!nest)
2091 goto nla_put_failure;
2092
2093 switch (enc_opts->dst_opt_type) {
2094 case TUNNEL_GENEVE_OPT:
2095 err = fl_dump_key_geneve_opt(skb, enc_opts);
2096 if (err)
2097 goto nla_put_failure;
2098 break;
2099 default:
2100 goto nla_put_failure;
2101 }
2102 nla_nest_end(skb, nest);
2103 return 0;
2104
2105nla_put_failure:
2106 nla_nest_cancel(skb, nest);
2107 return -EMSGSIZE;
2108}
2109
2110static int fl_dump_key_enc_opt(struct sk_buff *skb,
2111 struct flow_dissector_key_enc_opts *key_opts,
2112 struct flow_dissector_key_enc_opts *msk_opts)
2113{
2114 int err;
2115
2116 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2117 if (err)
2118 return err;
2119
2120 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2121}
2122
f5749081
JP		 2123static int fl_dump_key(struct sk_buff *skb, struct net *net,
2124 struct fl_flow_key *key, struct fl_flow_key *mask)
77b9900e 2125{
77b9900e
JP		 2126 if (mask->indev_ifindex) {
2127 struct net_device *dev;
2128
2129 dev = __dev_get_by_index(net, key->indev_ifindex);
2130 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2131 goto nla_put_failure;
2132 }
2133
2134 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2135 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2136 sizeof(key->eth.dst)) ||
2137 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2138 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2139 sizeof(key->eth.src)) ||
2140 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2141 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2142 sizeof(key->basic.n_proto)))
2143 goto nla_put_failure;
9399ae9a 2144
a577d8f7
BL		 2145 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2146 goto nla_put_failure;
2147
d64efd09
JL		 2148 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2149 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
9399ae9a
HHZ		 2150 goto nla_put_failure;
2151
d64efd09
JL		 2152 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2153 TCA_FLOWER_KEY_CVLAN_PRIO,
2154 &key->cvlan, &mask->cvlan) ||
2155 (mask->cvlan.vlan_tpid &&
158abbf1
JL		 2156 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2157 key->cvlan.vlan_tpid)))
d3069512
JL		 2158 goto nla_put_failure;
2159
5e9a0fe4
JL		 2160 if (mask->basic.n_proto) {
2161 if (mask->cvlan.vlan_tpid) {
2162 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2163 key->basic.n_proto))
2164 goto nla_put_failure;
2165 } else if (mask->vlan.vlan_tpid) {
2166 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2167 key->basic.n_proto))
2168 goto nla_put_failure;
2169 }
d64efd09
JL		 2170 }
2171
77b9900e
JP		 2172 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2173 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 2174 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 2175 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a 2176 sizeof(key->basic.ip_proto)) ||
0e2c17b6 2177 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
77b9900e
JP		 2178 goto nla_put_failure;
2179
c3f83241 2180 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 2181 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2182 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2183 sizeof(key->ipv4.src)) ||
2184 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2185 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2186 sizeof(key->ipv4.dst))))
2187 goto nla_put_failure;
c3f83241 2188 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 2189 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2190 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2191 sizeof(key->ipv6.src)) ||
2192 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2193 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2194 sizeof(key->ipv6.dst))))
2195 goto nla_put_failure;
2196
2197 if (key->basic.ip_proto == IPPROTO_TCP &&
2198 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 2199 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 2200 sizeof(key->tp.src)) ||
2201 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 2202 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 2203 sizeof(key->tp.dst)) ||
2204 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2205 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2206 sizeof(key->tcp.flags))))
77b9900e
JP		 2207 goto nla_put_failure;
2208 else if (key->basic.ip_proto == IPPROTO_UDP &&
2209 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 2210 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 2211 sizeof(key->tp.src)) ||
2212 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 2213 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 2214 sizeof(key->tp.dst))))
2215 goto nla_put_failure;
2216 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2217 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2218 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2219 sizeof(key->tp.src)) ||
2220 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2221 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 2222 sizeof(key->tp.dst))))
2223 goto nla_put_failure;
7b684884
SH		 2224 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2225 key->basic.ip_proto == IPPROTO_ICMP &&
2226 (fl_dump_key_val(skb, &key->icmp.type,
2227 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2228 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2229 sizeof(key->icmp.type)) ||
2230 fl_dump_key_val(skb, &key->icmp.code,
2231 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2232 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2233 sizeof(key->icmp.code))))
2234 goto nla_put_failure;
2235 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2236 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2237 (fl_dump_key_val(skb, &key->icmp.type,
2238 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2239 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2240 sizeof(key->icmp.type)) ||
2241 fl_dump_key_val(skb, &key->icmp.code,
2242 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2243 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2244 sizeof(key->icmp.code))))
2245 goto nla_put_failure;
99d31326
SH		 2246 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2247 key->basic.n_proto == htons(ETH_P_RARP)) &&
2248 (fl_dump_key_val(skb, &key->arp.sip,
2249 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2250 TCA_FLOWER_KEY_ARP_SIP_MASK,
2251 sizeof(key->arp.sip)) ||
2252 fl_dump_key_val(skb, &key->arp.tip,
2253 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2254 TCA_FLOWER_KEY_ARP_TIP_MASK,
2255 sizeof(key->arp.tip)) ||
2256 fl_dump_key_val(skb, &key->arp.op,
2257 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2258 TCA_FLOWER_KEY_ARP_OP_MASK,
2259 sizeof(key->arp.op)) ||
2260 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2261 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2262 sizeof(key->arp.sha)) ||
2263 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2264 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2265 sizeof(key->arp.tha))))
2266 goto nla_put_failure;
77b9900e 2267
5c72299f
AN		 2268 if ((key->basic.ip_proto == IPPROTO_TCP ||
2269 key->basic.ip_proto == IPPROTO_UDP ||
2270 key->basic.ip_proto == IPPROTO_SCTP) &&
2271 fl_dump_key_port_range(skb, key, mask))
2272 goto nla_put_failure;
2273
bc3103f1
AV		 2274 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2275 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2276 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2277 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2278 sizeof(key->enc_ipv4.src)) ||
2279 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2280 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2281 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2282 sizeof(key->enc_ipv4.dst))))
2283 goto nla_put_failure;
2284 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2285 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2286 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2287 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2288 sizeof(key->enc_ipv6.src)) ||
2289 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2290 TCA_FLOWER_KEY_ENC_IPV6_DST,
2291 &mask->enc_ipv6.dst,
2292 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2293 sizeof(key->enc_ipv6.dst))))
2294 goto nla_put_failure;
2295
2296 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 2297 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 2298 sizeof(key->enc_key_id)) ||
2299 fl_dump_key_val(skb, &key->enc_tp.src,
2300 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2301 &mask->enc_tp.src,
2302 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2303 sizeof(key->enc_tp.src)) ||
2304 fl_dump_key_val(skb, &key->enc_tp.dst,
2305 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2306 &mask->enc_tp.dst,
2307 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
0e2c17b6 2308 sizeof(key->enc_tp.dst)) ||
0a6e7778
PJV		 2309 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2310 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
bc3103f1
AV		 2311 goto nla_put_failure;
2312
faa3ffce
OG		 2313 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2314 goto nla_put_failure;
2315
f5749081
JP		 2316 return 0;
2317
2318nla_put_failure:
2319 return -EMSGSIZE;
2320}
2321
2322static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
12db03b6 2323 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
f5749081
JP		 2324{
2325 struct cls_fl_filter *f = fh;
2326 struct nlattr *nest;
2327 struct fl_flow_key *key, *mask;
3d81e711 2328 bool skip_hw;
f5749081
JP		 2329
2330 if (!f)
2331 return skb->len;
2332
2333 t->tcm_handle = f->handle;
2334
ae0be8de 2335 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
f5749081
JP		 2336 if (!nest)
2337 goto nla_put_failure;
2338
3d81e711
VB		 2339 spin_lock(&tp->lock);
2340
f5749081
JP		 2341 if (f->res.classid &&
2342 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3d81e711 2343 goto nla_put_failure_locked;
f5749081
JP		 2344
2345 key = &f->key;
2346 mask = &f->mask->key;
3d81e711 2347 skip_hw = tc_skip_hw(f->flags);
f5749081
JP		 2348
2349 if (fl_dump_key(skb, net, key, mask))
3d81e711 2350 goto nla_put_failure_locked;
f5749081 2351
749e6720 2352 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3d81e711
VB		 2353 goto nla_put_failure_locked;
2354
2355 spin_unlock(&tp->lock);
2356
2357 if (!skip_hw)
c24e43d8 2358 fl_hw_update_stats(tp, f, rtnl_held);
e69985c6 2359
86c55361
VB		 2360 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2361 goto nla_put_failure;
2362
77b9900e
JP		 2363 if (tcf_exts_dump(skb, &f->exts))
2364 goto nla_put_failure;
2365
2366 nla_nest_end(skb, nest);
2367
2368 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2369 goto nla_put_failure;
2370
2371 return skb->len;
2372
3d81e711
VB		 2373nla_put_failure_locked:
2374 spin_unlock(&tp->lock);
77b9900e
JP		 2375nla_put_failure:
2376 nla_nest_cancel(skb, nest);
2377 return -1;
2378}
2379
b95ec7eb
JP		 2380static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2381{
2382 struct fl_flow_tmplt *tmplt = tmplt_priv;
2383 struct fl_flow_key *key, *mask;
2384 struct nlattr *nest;
2385
ae0be8de 2386 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
b95ec7eb
JP		 2387 if (!nest)
2388 goto nla_put_failure;
2389
2390 key = &tmplt->dummy_key;
2391 mask = &tmplt->mask;
2392
2393 if (fl_dump_key(skb, net, key, mask))
2394 goto nla_put_failure;
2395
2396 nla_nest_end(skb, nest);
2397
2398 return skb->len;
2399
2400nla_put_failure:
2401 nla_nest_cancel(skb, nest);
2402 return -EMSGSIZE;
2403}
2404
07d79fc7
CW		 2405static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2406{
2407 struct cls_fl_filter *f = fh;
2408
2409 if (f && f->res.classid == classid)
2410 f->res.class = cl;
2411}
2412
77b9900e
JP		 2413static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2414 .kind = "flower",
2415 .classify = fl_classify,
2416 .init = fl_init,
2417 .destroy = fl_destroy,
2418 .get = fl_get,
06177558 2419 .put = fl_put,
77b9900e
JP		 2420 .change = fl_change,
2421 .delete = fl_delete,
2422 .walk = fl_walk,
31533cba 2423 .reoffload = fl_reoffload,
77b9900e 2424 .dump = fl_dump,
07d79fc7 2425 .bind_class = fl_bind_class,
b95ec7eb
JP		 2426 .tmplt_create = fl_tmplt_create,
2427 .tmplt_destroy = fl_tmplt_destroy,
2428 .tmplt_dump = fl_tmplt_dump,
77b9900e 2429 .owner = THIS_MODULE,
92149190 2430 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
77b9900e
JP		 2431};
2432
2433static int __init cls_fl_init(void)
2434{
2435 return register_tcf_proto_ops(&cls_fl_ops);
2436}
2437
2438static void __exit cls_fl_exit(void)
2439{
2440 unregister_tcf_proto_ops(&cls_fl_ops);
2441}
2442
2443module_init(cls_fl_init);
2444module_exit(cls_fl_exit);
2445
2446MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2447MODULE_DESCRIPTION("Flower classifier");
2448MODULE_LICENSE("GPL v2");
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