]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blame - net/sched/cls_flower.c
projects / mirror_ubuntu-hirsute-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-hirsute-kernel.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
e0ace68a
PB		 29#include <uapi/linux/netfilter/nf_conntrack_common.h>
30
77b9900e 31struct fl_flow_key {
8212ed77 32 struct flow_dissector_key_meta meta;
42aecaa9 33 struct flow_dissector_key_control control;
bc3103f1 34 struct flow_dissector_key_control enc_control;
77b9900e
JP		 35 struct flow_dissector_key_basic basic;
36 struct flow_dissector_key_eth_addrs eth;
9399ae9a 37 struct flow_dissector_key_vlan vlan;
d64efd09 38 struct flow_dissector_key_vlan cvlan;
77b9900e 39 union {
c3f83241 40 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 41 struct flow_dissector_key_ipv6_addrs ipv6;
42 };
43 struct flow_dissector_key_ports tp;
7b684884 44 struct flow_dissector_key_icmp icmp;
99d31326 45 struct flow_dissector_key_arp arp;
bc3103f1
AV		 46 struct flow_dissector_key_keyid enc_key_id;
47 union {
48 struct flow_dissector_key_ipv4_addrs enc_ipv4;
49 struct flow_dissector_key_ipv6_addrs enc_ipv6;
50 };
f4d997fd 51 struct flow_dissector_key_ports enc_tp;
a577d8f7 52 struct flow_dissector_key_mpls mpls;
fdfc7dd6 53 struct flow_dissector_key_tcp tcp;
4d80cc0a 54 struct flow_dissector_key_ip ip;
0e2c17b6 55 struct flow_dissector_key_ip enc_ip;
0a6e7778 56 struct flow_dissector_key_enc_opts enc_opts;
5c72299f
AN		 57 struct flow_dissector_key_ports tp_min;
58 struct flow_dissector_key_ports tp_max;
e0ace68a 59 struct flow_dissector_key_ct ct;
77b9900e
JP		 60} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
61
62struct fl_flow_mask_range {
63 unsigned short int start;
64 unsigned short int end;
65};
66
67struct fl_flow_mask {
68 struct fl_flow_key key;
69 struct fl_flow_mask_range range;
5c72299f 70 u32 flags;
05cd271f
PB		 71 struct rhash_head ht_node;
72 struct rhashtable ht;
73 struct rhashtable_params filter_ht_params;
74 struct flow_dissector dissector;
75 struct list_head filters;
44a5cd43 76 struct rcu_work rwork;
05cd271f 77 struct list_head list;
f48ef4d5 78 refcount_t refcnt;
77b9900e
JP		 79};
80
b95ec7eb
JP		 81struct fl_flow_tmplt {
82 struct fl_flow_key dummy_key;
83 struct fl_flow_key mask;
84 struct flow_dissector dissector;
85 struct tcf_chain *chain;
86};
87
77b9900e
JP		 88struct cls_fl_head {
89 struct rhashtable ht;
259e60f9 90 spinlock_t masks_lock; /* Protect masks list */
05cd271f 91 struct list_head masks;
c049d56e 92 struct list_head hw_filters;
aaa908ff 93 struct rcu_work rwork;
c15ab236 94 struct idr handle_idr;
77b9900e
JP		 95};
96
97struct cls_fl_filter {
05cd271f 98 struct fl_flow_mask *mask;
77b9900e
JP		 99 struct rhash_head ht_node;
100 struct fl_flow_key mkey;
101 struct tcf_exts exts;
102 struct tcf_result res;
103 struct fl_flow_key key;
104 struct list_head list;
c049d56e 105 struct list_head hw_list;
77b9900e 106 u32 handle;
e69985c6 107 u32 flags;
86c55361 108 u32 in_hw_count;
aaa908ff 109 struct rcu_work rwork;
7091d8c7 110 struct net_device *hw_dev;
06177558
VB		 111 /* Flower classifier is unlocked, which means that its reference counter
112 * can be changed concurrently without any kind of external
113 * synchronization. Use atomic reference counter to be concurrency-safe.
114 */
115 refcount_t refcnt;
b2552b8c 116 bool deleted;
77b9900e
JP		 117};
118
05cd271f
PB		 119static const struct rhashtable_params mask_ht_params = {
120 .key_offset = offsetof(struct fl_flow_mask, key),
121 .key_len = sizeof(struct fl_flow_key),
122 .head_offset = offsetof(struct fl_flow_mask, ht_node),
123 .automatic_shrinking = true,
124};
125
77b9900e
JP		 126static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
127{
128 return mask->range.end - mask->range.start;
129}
130
131static void fl_mask_update_range(struct fl_flow_mask *mask)
132{
133 const u8 *bytes = (const u8 *) &mask->key;
134 size_t size = sizeof(mask->key);
05cd271f 135 size_t i, first = 0, last;
77b9900e 136
05cd271f
PB		 137 for (i = 0; i < size; i++) {
138 if (bytes[i]) {
139 first = i;
140 break;
141 }
142 }
143 last = first;
144 for (i = size - 1; i != first; i--) {
77b9900e 145 if (bytes[i]) {
77b9900e 146 last = i;
05cd271f 147 break;
77b9900e
JP		 148 }
149 }
150 mask->range.start = rounddown(first, sizeof(long));
151 mask->range.end = roundup(last + 1, sizeof(long));
152}
153
154static void *fl_key_get_start(struct fl_flow_key *key,
155 const struct fl_flow_mask *mask)
156{
157 return (u8 *) key + mask->range.start;
158}
159
160static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
161 struct fl_flow_mask *mask)
162{
163 const long *lkey = fl_key_get_start(key, mask);
164 const long *lmask = fl_key_get_start(&mask->key, mask);
165 long *lmkey = fl_key_get_start(mkey, mask);
166 int i;
167
168 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
169 *lmkey++ = *lkey++ & *lmask++;
170}
171
b95ec7eb
JP		 172static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
173 struct fl_flow_mask *mask)
174{
175 const long *lmask = fl_key_get_start(&mask->key, mask);
176 const long *ltmplt;
177 int i;
178
179 if (!tmplt)
180 return true;
181 ltmplt = fl_key_get_start(&tmplt->mask, mask);
182 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
183 if (~*ltmplt++ & *lmask++)
184 return false;
185 }
186 return true;
187}
188
77b9900e
JP		 189static void fl_clear_masked_range(struct fl_flow_key *key,
190 struct fl_flow_mask *mask)
191{
192 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
193}
194
5c72299f
AN		 195static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
196 struct fl_flow_key *key,
197 struct fl_flow_key *mkey)
198{
199 __be16 min_mask, max_mask, min_val, max_val;
200
201 min_mask = htons(filter->mask->key.tp_min.dst);
202 max_mask = htons(filter->mask->key.tp_max.dst);
203 min_val = htons(filter->key.tp_min.dst);
204 max_val = htons(filter->key.tp_max.dst);
205
206 if (min_mask && max_mask) {
207 if (htons(key->tp.dst) < min_val ||
208 htons(key->tp.dst) > max_val)
209 return false;
210
211 /* skb does not have min and max values */
212 mkey->tp_min.dst = filter->mkey.tp_min.dst;
213 mkey->tp_max.dst = filter->mkey.tp_max.dst;
214 }
215 return true;
216}
217
218static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
219 struct fl_flow_key *key,
220 struct fl_flow_key *mkey)
221{
222 __be16 min_mask, max_mask, min_val, max_val;
223
224 min_mask = htons(filter->mask->key.tp_min.src);
225 max_mask = htons(filter->mask->key.tp_max.src);
226 min_val = htons(filter->key.tp_min.src);
227 max_val = htons(filter->key.tp_max.src);
228
229 if (min_mask && max_mask) {
230 if (htons(key->tp.src) < min_val ||
231 htons(key->tp.src) > max_val)
232 return false;
233
234 /* skb does not have min and max values */
235 mkey->tp_min.src = filter->mkey.tp_min.src;
236 mkey->tp_max.src = filter->mkey.tp_max.src;
237 }
238 return true;
239}
240
241static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
242 struct fl_flow_key *mkey)
a3308d8f 243{
05cd271f
PB		 244 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
245 mask->filter_ht_params);
a3308d8f
PB		 246}
247
5c72299f
AN		 248static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
249 struct fl_flow_key *mkey,
250 struct fl_flow_key *key)
251{
252 struct cls_fl_filter *filter, *f;
253
254 list_for_each_entry_rcu(filter, &mask->filters, list) {
255 if (!fl_range_port_dst_cmp(filter, key, mkey))
256 continue;
257
258 if (!fl_range_port_src_cmp(filter, key, mkey))
259 continue;
260
261 f = __fl_lookup(mask, mkey);
262 if (f)
263 return f;
264 }
265 return NULL;
266}
267
268static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
269 struct fl_flow_key *mkey,
270 struct fl_flow_key *key)
271{
272 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
273 return fl_lookup_range(mask, mkey, key);
274
275 return __fl_lookup(mask, mkey);
276}
277
e0ace68a
PB		 278static u16 fl_ct_info_to_flower_map[] = {
279 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
280 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
281 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
282 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
283 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
284 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
285 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
286 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
287 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
288 TCA_FLOWER_KEY_CT_FLAGS_NEW,
289};
290
77b9900e
JP		 291static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
292 struct tcf_result *res)
293{
294 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
77b9900e 295 struct fl_flow_key skb_mkey;
e0ace68a
PB		 296 struct fl_flow_key skb_key;
297 struct fl_flow_mask *mask;
298 struct cls_fl_filter *f;
77b9900e 299
05cd271f
PB		 300 list_for_each_entry_rcu(mask, &head->masks, list) {
301 fl_clear_masked_range(&skb_key, mask);
bc3103f1 302
8212ed77 303 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
05cd271f
PB		 304 /* skb_flow_dissect() does not set n_proto in case an unknown
305 * protocol, so do it rather here.
306 */
307 skb_key.basic.n_proto = skb->protocol;
308 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
e0ace68a
PB		 309 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
310 fl_ct_info_to_flower_map,
311 ARRAY_SIZE(fl_ct_info_to_flower_map));
05cd271f 312 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
77b9900e 313
05cd271f 314 fl_set_masked_key(&skb_mkey, &skb_key, mask);
77b9900e 315
5c72299f 316 f = fl_lookup(mask, &skb_mkey, &skb_key);
05cd271f
PB		 317 if (f && !tc_skip_sw(f->flags)) {
318 *res = f->res;
319 return tcf_exts_exec(skb, &f->exts, res);
320 }
77b9900e
JP		 321 }
322 return -1;
323}
324
325static int fl_init(struct tcf_proto *tp)
326{
327 struct cls_fl_head *head;
328
329 head = kzalloc(sizeof(*head), GFP_KERNEL);
330 if (!head)
331 return -ENOBUFS;
332
259e60f9 333 spin_lock_init(&head->masks_lock);
05cd271f 334 INIT_LIST_HEAD_RCU(&head->masks);
c049d56e 335 INIT_LIST_HEAD(&head->hw_filters);
77b9900e 336 rcu_assign_pointer(tp->root, head);
c15ab236 337 idr_init(&head->handle_idr);
77b9900e 338
05cd271f
PB		 339 return rhashtable_init(&head->ht, &mask_ht_params);
340}
341
99815f50 342static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
44a5cd43 343{
99815f50
VB		 344 /* temporary masks don't have their filters list and ht initialized */
345 if (mask_init_done) {
346 WARN_ON(!list_empty(&mask->filters));
347 rhashtable_destroy(&mask->ht);
348 }
44a5cd43
PA		 349 kfree(mask);
350}
351
352static void fl_mask_free_work(struct work_struct *work)
353{
354 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
355 struct fl_flow_mask, rwork);
356
99815f50
VB		 357 fl_mask_free(mask, true);
358}
359
360static void fl_uninit_mask_free_work(struct work_struct *work)
361{
362 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
363 struct fl_flow_mask, rwork);
364
365 fl_mask_free(mask, false);
44a5cd43
PA		 366}
367
9994677c 368static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
05cd271f 369{
f48ef4d5 370 if (!refcount_dec_and_test(&mask->refcnt))
05cd271f
PB		 371 return false;
372
373 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
259e60f9
VB		 374
375 spin_lock(&head->masks_lock);
05cd271f 376 list_del_rcu(&mask->list);
259e60f9
VB		 377 spin_unlock(&head->masks_lock);
378
9994677c 379 tcf_queue_work(&mask->rwork, fl_mask_free_work);
05cd271f
PB		 380
381 return true;
77b9900e
JP		 382}
383
c049d56e
VB		 384static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
385{
386 /* Flower classifier only changes root pointer during init and destroy.
387 * Users must obtain reference to tcf_proto instance before calling its
388 * API, so tp->root pointer is protected from concurrent call to
389 * fl_destroy() by reference counting.
390 */
391 return rcu_dereference_raw(tp->root);
392}
393
0dadc117
CW		 394static void __fl_destroy_filter(struct cls_fl_filter *f)
395{
396 tcf_exts_destroy(&f->exts);
397 tcf_exts_put_net(&f->exts);
398 kfree(f);
399}
400
0552c8af 401static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 402{
aaa908ff
CW		 403 struct cls_fl_filter *f = container_of(to_rcu_work(work),
404 struct cls_fl_filter, rwork);
77b9900e 405
0dadc117 406 __fl_destroy_filter(f);
0552c8af
CW		 407}
408
1b0f8037 409static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8 410 bool rtnl_held, struct netlink_ext_ack *extack)
5b33f488 411{
208c0f4b 412 struct tcf_block *block = tp->chain->block;
f9e30088 413 struct flow_cls_offload cls_flower = {};
5b33f488 414
d6787147 415 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 416 cls_flower.command = FLOW_CLS_DESTROY;
de4784ca 417 cls_flower.cookie = (unsigned long) f;
5b33f488 418
40119211 419 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
918190f5 420 &f->flags, &f->in_hw_count, rtnl_held);
c24e43d8 421
5b33f488
AV		 422}
423
e8eb36cd 424static int fl_hw_replace_filter(struct tcf_proto *tp,
c24e43d8 425 struct cls_fl_filter *f, bool rtnl_held,
41002038 426 struct netlink_ext_ack *extack)
5b33f488 427{
208c0f4b 428 struct tcf_block *block = tp->chain->block;
f9e30088 429 struct flow_cls_offload cls_flower = {};
717503b9 430 bool skip_sw = tc_skip_sw(f->flags);
c24e43d8
VB		 431 int err = 0;
432
e3ab786b 433 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
918190f5
VB		 434 if (!cls_flower.rule)
435 return -ENOMEM;
8f256622 436
d6787147 437 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 438 cls_flower.command = FLOW_CLS_REPLACE;
de4784ca 439 cls_flower.cookie = (unsigned long) f;
8f256622
PNA		 440 cls_flower.rule->match.dissector = &f->mask->dissector;
441 cls_flower.rule->match.mask = &f->mask->key;
442 cls_flower.rule->match.key = &f->mkey;
384c181e 443 cls_flower.classid = f->res.classid;
5b33f488 444
9838b20a 445 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,
918190f5 446 rtnl_held);
3a7b6861
PNA		 447 if (err) {
448 kfree(cls_flower.rule);
918190f5 449 if (skip_sw) {
1f15bb4f 450 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
918190f5
VB		 451 return err;
452 }
453 return 0;
3a7b6861
PNA		 454 }
455
40119211 456 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
918190f5 457 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
5a6ff4b1 458 tc_cleanup_flow_action(&cls_flower.rule->action);
8f256622
PNA		 459 kfree(cls_flower.rule);
460
40119211 461 if (err) {
918190f5
VB		 462 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
463 return err;
717503b9
JP		 464 }
465
918190f5
VB		 466 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
467 return -EINVAL;
c24e43d8 468
918190f5 469 return 0;
5b33f488
AV		 470}
471
c24e43d8
VB		 472static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
473 bool rtnl_held)
10cbc684 474{
208c0f4b 475 struct tcf_block *block = tp->chain->block;
f9e30088 476 struct flow_cls_offload cls_flower = {};
10cbc684 477
d6787147 478 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
f9e30088 479 cls_flower.command = FLOW_CLS_STATS;
de4784ca 480 cls_flower.cookie = (unsigned long) f;
384c181e 481 cls_flower.classid = f->res.classid;
10cbc684 482
918190f5
VB		 483 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
484 rtnl_held);
3b1903ef
PNA		 485
486 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
487 cls_flower.stats.pkts,
488 cls_flower.stats.lastused);
10cbc684
AV		 489}
490
06177558
VB		 491static void __fl_put(struct cls_fl_filter *f)
492{
493 if (!refcount_dec_and_test(&f->refcnt))
494 return;
495
496 if (tcf_exts_get_net(&f->exts))
497 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
498 else
499 __fl_destroy_filter(f);
500}
501
502static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
503{
504 struct cls_fl_filter *f;
505
506 rcu_read_lock();
507 f = idr_find(&head->handle_idr, handle);
508 if (f && !refcount_inc_not_zero(&f->refcnt))
509 f = NULL;
510 rcu_read_unlock();
511
512 return f;
513}
514
b2552b8c 515static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8
VB		 516 bool *last, bool rtnl_held,
517 struct netlink_ext_ack *extack)
13fa876e 518{
e474619a 519 struct cls_fl_head *head = fl_head_dereference(tp);
c15ab236 520
b2552b8c
VB		 521 *last = false;
522
3d81e711
VB		 523 spin_lock(&tp->lock);
524 if (f->deleted) {
525 spin_unlock(&tp->lock);
b2552b8c 526 return -ENOENT;
3d81e711 527 }
b2552b8c
VB		 528
529 f->deleted = true;
530 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
531 f->mask->filter_ht_params);
9c160941 532 idr_remove(&head->handle_idr, f->handle);
13fa876e 533 list_del_rcu(&f->list);
3d81e711
VB		 534 spin_unlock(&tp->lock);
535
9994677c 536 *last = fl_mask_put(head, f->mask);
79685219 537 if (!tc_skip_hw(f->flags))
c24e43d8 538 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
13fa876e 539 tcf_unbind_filter(tp, &f->res);
06177558 540 __fl_put(f);
05cd271f 541
b2552b8c 542 return 0;
13fa876e
RD		 543}
544
d9363774
DB		 545static void fl_destroy_sleepable(struct work_struct *work)
546{
aaa908ff
CW		 547 struct cls_fl_head *head = container_of(to_rcu_work(work),
548 struct cls_fl_head,
549 rwork);
de9dc650
PB		 550
551 rhashtable_destroy(&head->ht);
d9363774
DB		 552 kfree(head);
553 module_put(THIS_MODULE);
554}
555
12db03b6
VB		 556static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
557 struct netlink_ext_ack *extack)
77b9900e 558{
e474619a 559 struct cls_fl_head *head = fl_head_dereference(tp);
05cd271f 560 struct fl_flow_mask *mask, *next_mask;
77b9900e 561 struct cls_fl_filter *f, *next;
b2552b8c 562 bool last;
77b9900e 563
05cd271f
PB		 564 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
565 list_for_each_entry_safe(f, next, &mask->filters, list) {
c24e43d8 566 __fl_delete(tp, f, &last, rtnl_held, extack);
b2552b8c 567 if (last)
05cd271f
PB		 568 break;
569 }
570 }
c15ab236 571 idr_destroy(&head->handle_idr);
d9363774
DB		 572
573 __module_get(THIS_MODULE);
aaa908ff 574 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
77b9900e
JP		 575}
576
06177558
VB		 577static void fl_put(struct tcf_proto *tp, void *arg)
578{
579 struct cls_fl_filter *f = arg;
580
581 __fl_put(f);
582}
583
8113c095 584static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e 585{
e474619a 586 struct cls_fl_head *head = fl_head_dereference(tp);
77b9900e 587
06177558 588 return __fl_get(head, handle);
77b9900e
JP		 589}
590
591static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
592 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
593 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
594 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
595 .len = IFNAMSIZ },
596 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
597 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
598 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
599 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
600 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
601 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
602 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
603 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
604 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
605 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
606 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
607 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
608 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
609 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
610 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
611 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 612 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
613 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 614 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
615 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
616 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 617 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
618 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
619 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
620 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
621 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
622 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
623 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
624 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
625 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 626 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
627 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
628 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
629 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 630 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
631 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
632 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
633 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 634 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
635 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
636 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
637 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 638 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
639 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 640 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
641 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
642 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
643 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
644 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
645 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
646 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
647 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 648 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
649 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
650 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
651 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
652 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
653 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
654 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
655 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
656 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
657 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 658 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
659 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
660 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
661 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
fdfc7dd6
JP		 662 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
663 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 664 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
666 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
667 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
d64efd09
JL		 668 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
669 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
0e2c17b6
OG		 671 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
672 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
673 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
674 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
0a6e7778
PJV		 675 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
676 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
e0ace68a
PB		 677 [TCA_FLOWER_KEY_CT_STATE] = { .type = NLA_U16 },
678 [TCA_FLOWER_KEY_CT_STATE_MASK] = { .type = NLA_U16 },
679 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
680 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
681 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
682 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
683 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
684 .len = 128 / BITS_PER_BYTE },
685 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
686 .len = 128 / BITS_PER_BYTE },
0a6e7778
PJV		 687};
688
689static const struct nla_policy
690enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
691 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
692};
693
694static const struct nla_policy
695geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
696 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
697 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
698 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
699 .len = 128 },
77b9900e
JP		 700};
701
702static void fl_set_key_val(struct nlattr **tb,
703 void *val, int val_type,
704 void *mask, int mask_type, int len)
705{
706 if (!tb[val_type])
707 return;
e0ace68a 708 nla_memcpy(val, tb[val_type], len);
77b9900e
JP		 709 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
710 memset(mask, 0xff, len);
711 else
e0ace68a 712 nla_memcpy(mask, tb[mask_type], len);
77b9900e
JP		 713}
714
5c72299f
AN		 715static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
716 struct fl_flow_key *mask)
717{
718 fl_set_key_val(tb, &key->tp_min.dst,
719 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
720 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
721 fl_set_key_val(tb, &key->tp_max.dst,
722 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
723 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
724 fl_set_key_val(tb, &key->tp_min.src,
725 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
726 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
727 fl_set_key_val(tb, &key->tp_max.src,
728 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
729 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
730
731 if ((mask->tp_min.dst && mask->tp_max.dst &&
732 htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
733 (mask->tp_min.src && mask->tp_max.src &&
734 htons(key->tp_max.src) <= htons(key->tp_min.src)))
735 return -EINVAL;
736
737 return 0;
738}
739
1a7fca63
BL		 740static int fl_set_key_mpls(struct nlattr **tb,
741 struct flow_dissector_key_mpls *key_val,
742 struct flow_dissector_key_mpls *key_mask)
a577d8f7
BL		 743{
744 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
745 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
746 key_mask->mpls_ttl = MPLS_TTL_MASK;
747 }
748 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 749 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
750
751 if (bos & ~MPLS_BOS_MASK)
752 return -EINVAL;
753 key_val->mpls_bos = bos;
a577d8f7
BL		 754 key_mask->mpls_bos = MPLS_BOS_MASK;
755 }
756 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 757 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
758
759 if (tc & ~MPLS_TC_MASK)
760 return -EINVAL;
761 key_val->mpls_tc = tc;
a577d8f7
BL		 762 key_mask->mpls_tc = MPLS_TC_MASK;
763 }
764 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 765 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
766
767 if (label & ~MPLS_LABEL_MASK)
768 return -EINVAL;
769 key_val->mpls_label = label;
a577d8f7
BL		 770 key_mask->mpls_label = MPLS_LABEL_MASK;
771 }
1a7fca63 772 return 0;
a577d8f7
BL		 773}
774
9399ae9a 775static void fl_set_key_vlan(struct nlattr **tb,
aaab0834 776 __be16 ethertype,
d64efd09 777 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 778 struct flow_dissector_key_vlan *key_val,
779 struct flow_dissector_key_vlan *key_mask)
780{
781#define VLAN_PRIORITY_MASK 0x7
782
d64efd09 783 if (tb[vlan_id_key]) {
9399ae9a 784 key_val->vlan_id =
d64efd09 785 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
9399ae9a
HHZ		 786 key_mask->vlan_id = VLAN_VID_MASK;
787 }
d64efd09 788 if (tb[vlan_prio_key]) {
9399ae9a 789 key_val->vlan_priority =
d64efd09 790 nla_get_u8(tb[vlan_prio_key]) &
9399ae9a
HHZ		 791 VLAN_PRIORITY_MASK;
792 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
793 }
aaab0834
JL		 794 key_val->vlan_tpid = ethertype;
795 key_mask->vlan_tpid = cpu_to_be16(~0);
9399ae9a
HHZ		 796}
797
faa3ffce
OG		 798static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
799 u32 *dissector_key, u32 *dissector_mask,
800 u32 flower_flag_bit, u32 dissector_flag_bit)
801{
802 if (flower_mask & flower_flag_bit) {
803 *dissector_mask |= dissector_flag_bit;
804 if (flower_key & flower_flag_bit)
805 *dissector_key |= dissector_flag_bit;
806 }
807}
808
d9724772
OG		 809static int fl_set_key_flags(struct nlattr **tb,
810 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 811{
812 u32 key, mask;
813
d9724772
OG		 814 /* mask is mandatory for flags */
815 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
816 return -EINVAL;
faa3ffce
OG		 817
818 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 819 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 820
821 *flags_key = 0;
822 *flags_mask = 0;
823
824 fl_set_key_flag(key, mask, flags_key, flags_mask,
825 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 826 fl_set_key_flag(key, mask, flags_key, flags_mask,
827 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
828 FLOW_DIS_FIRST_FRAG);
d9724772
OG		 829
830 return 0;
faa3ffce
OG		 831}
832
0e2c17b6 833static void fl_set_key_ip(struct nlattr **tb, bool encap,
4d80cc0a
OG		 834 struct flow_dissector_key_ip *key,
835 struct flow_dissector_key_ip *mask)
836{
0e2c17b6
OG		 837 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
838 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
839 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
840 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
4d80cc0a 841
0e2c17b6
OG		 842 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
843 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
4d80cc0a
OG		 844}
845
0a6e7778
PJV		 846static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
847 int depth, int option_len,
848 struct netlink_ext_ack *extack)
849{
850 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
851 struct nlattr *class = NULL, *type = NULL, *data = NULL;
852 struct geneve_opt *opt;
853 int err, data_len = 0;
854
855 if (option_len > sizeof(struct geneve_opt))
856 data_len = option_len - sizeof(struct geneve_opt);
857
858 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
859 memset(opt, 0xff, option_len);
860 opt->length = data_len / 4;
861 opt->r1 = 0;
862 opt->r2 = 0;
863 opt->r3 = 0;
864
865 /* If no mask has been prodived we assume an exact match. */
866 if (!depth)
867 return sizeof(struct geneve_opt) + data_len;
868
869 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
870 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
871 return -EINVAL;
872 }
873
8cb08174
JB		 874 err = nla_parse_nested_deprecated(tb,
875 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
876 nla, geneve_opt_policy, extack);
0a6e7778
PJV		 877 if (err < 0)
878 return err;
879
880 /* We are not allowed to omit any of CLASS, TYPE or DATA
881 * fields from the key.
882 */
883 if (!option_len &&
884 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
885 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
886 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
887 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
888 return -EINVAL;
889 }
890
891 /* Omitting any of CLASS, TYPE or DATA fields is allowed
892 * for the mask.
893 */
894 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
895 int new_len = key->enc_opts.len;
896
897 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
898 data_len = nla_len(data);
899 if (data_len < 4) {
900 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
901 return -ERANGE;
902 }
903 if (data_len % 4) {
904 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
905 return -ERANGE;
906 }
907
908 new_len += sizeof(struct geneve_opt) + data_len;
909 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
910 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
911 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
912 return -ERANGE;
913 }
914 opt->length = data_len / 4;
915 memcpy(opt->opt_data, nla_data(data), data_len);
916 }
917
918 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
919 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
920 opt->opt_class = nla_get_be16(class);
921 }
922
923 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
924 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
925 opt->type = nla_get_u8(type);
926 }
927
928 return sizeof(struct geneve_opt) + data_len;
929}
930
931static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
932 struct fl_flow_key *mask,
933 struct netlink_ext_ack *extack)
934{
935 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
63c82997
JK		 936 int err, option_len, key_depth, msk_depth = 0;
937
8cb08174
JB		 938 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
939 TCA_FLOWER_KEY_ENC_OPTS_MAX,
940 enc_opts_policy, extack);
63c82997
JK		 941 if (err)
942 return err;
0a6e7778
PJV		 943
944 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
945
946 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
8cb08174
JB		 947 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
948 TCA_FLOWER_KEY_ENC_OPTS_MAX,
949 enc_opts_policy, extack);
63c82997
JK		 950 if (err)
951 return err;
952
0a6e7778
PJV		 953 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
954 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
955 }
956
957 nla_for_each_attr(nla_opt_key, nla_enc_key,
958 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
959 switch (nla_type(nla_opt_key)) {
960 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
961 option_len = 0;
962 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
963 option_len = fl_set_geneve_opt(nla_opt_key, key,
964 key_depth, option_len,
965 extack);
966 if (option_len < 0)
967 return option_len;
968
969 key->enc_opts.len += option_len;
970 /* At the same time we need to parse through the mask
971 * in order to verify exact and mask attribute lengths.
972 */
973 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
974 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
975 msk_depth, option_len,
976 extack);
977 if (option_len < 0)
978 return option_len;
979
980 mask->enc_opts.len += option_len;
981 if (key->enc_opts.len != mask->enc_opts.len) {
982 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
983 return -EINVAL;
984 }
985
986 if (msk_depth)
987 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
988 break;
989 default:
990 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
991 return -EINVAL;
992 }
993 }
994
995 return 0;
996}
997
e0ace68a
PB		 998static int fl_set_key_ct(struct nlattr **tb,
999 struct flow_dissector_key_ct *key,
1000 struct flow_dissector_key_ct *mask,
1001 struct netlink_ext_ack *extack)
1002{
1003 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1004 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1005 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1006 return -EOPNOTSUPP;
1007 }
1008 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1009 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1010 sizeof(key->ct_state));
1011 }
1012 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1013 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1014 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1015 return -EOPNOTSUPP;
1016 }
1017 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1018 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1019 sizeof(key->ct_zone));
1020 }
1021 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1022 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1023 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1024 return -EOPNOTSUPP;
1025 }
1026 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1027 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1028 sizeof(key->ct_mark));
1029 }
1030 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1031 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1032 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1033 return -EOPNOTSUPP;
1034 }
1035 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1036 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1037 sizeof(key->ct_labels));
1038 }
1039
1040 return 0;
1041}
1042
77b9900e 1043static int fl_set_key(struct net *net, struct nlattr **tb,
1057c55f
AA		 1044 struct fl_flow_key *key, struct fl_flow_key *mask,
1045 struct netlink_ext_ack *extack)
77b9900e 1046{
9399ae9a 1047 __be16 ethertype;
d9724772 1048 int ret = 0;
a5148626 1049
77b9900e 1050 if (tb[TCA_FLOWER_INDEV]) {
1057c55f 1051 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
77b9900e
JP		 1052 if (err < 0)
1053 return err;
8212ed77
JP		 1054 key->meta.ingress_ifindex = err;
1055 mask->meta.ingress_ifindex = 0xffffffff;
77b9900e
JP		 1056 }
1057
1058 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1059 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1060 sizeof(key->eth.dst));
1061 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1062 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1063 sizeof(key->eth.src));
66530bdf 1064
0b498a52 1065 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 1066 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1067
aaab0834 1068 if (eth_type_vlan(ethertype)) {
d64efd09
JL		 1069 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1070 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1071 &mask->vlan);
1072
5e9a0fe4
JL		 1073 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1074 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1075 if (eth_type_vlan(ethertype)) {
1076 fl_set_key_vlan(tb, ethertype,
1077 TCA_FLOWER_KEY_CVLAN_ID,
1078 TCA_FLOWER_KEY_CVLAN_PRIO,
1079 &key->cvlan, &mask->cvlan);
1080 fl_set_key_val(tb, &key->basic.n_proto,
1081 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1082 &mask->basic.n_proto,
1083 TCA_FLOWER_UNSPEC,
1084 sizeof(key->basic.n_proto));
1085 } else {
1086 key->basic.n_proto = ethertype;
1087 mask->basic.n_proto = cpu_to_be16(~0);
1088 }
d64efd09 1089 }
0b498a52
AB		 1090 } else {
1091 key->basic.n_proto = ethertype;
1092 mask->basic.n_proto = cpu_to_be16(~0);
1093 }
9399ae9a 1094 }
66530bdf 1095
77b9900e
JP		 1096 if (key->basic.n_proto == htons(ETH_P_IP) ||
1097 key->basic.n_proto == htons(ETH_P_IPV6)) {
1098 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1099 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1100 sizeof(key->basic.ip_proto));
0e2c17b6 1101 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
77b9900e 1102 }
66530bdf
JHS		 1103
1104 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1105 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1106 mask->control.addr_type = ~0;
77b9900e
JP		 1107 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1108 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1109 sizeof(key->ipv4.src));
1110 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1111 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1112 sizeof(key->ipv4.dst));
66530bdf
JHS		 1113 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1114 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1115 mask->control.addr_type = ~0;
77b9900e
JP		 1116 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1117 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1118 sizeof(key->ipv6.src));
1119 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1120 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1121 sizeof(key->ipv6.dst));
1122 }
66530bdf 1123
77b9900e
JP		 1124 if (key->basic.ip_proto == IPPROTO_TCP) {
1125 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1126 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1127 sizeof(key->tp.src));
1128 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1129 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 1130 sizeof(key->tp.dst));
fdfc7dd6
JP		 1131 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1132 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1133 sizeof(key->tcp.flags));
77b9900e
JP		 1134 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1135 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1136 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1137 sizeof(key->tp.src));
1138 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1139 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 1140 sizeof(key->tp.dst));
5976c5f4
SH		 1141 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1142 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1143 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1144 sizeof(key->tp.src));
1145 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1146 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1147 sizeof(key->tp.dst));
7b684884
SH		 1148 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1149 key->basic.ip_proto == IPPROTO_ICMP) {
1150 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1151 &mask->icmp.type,
1152 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1153 sizeof(key->icmp.type));
1154 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1155 &mask->icmp.code,
1156 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1157 sizeof(key->icmp.code));
1158 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1159 key->basic.ip_proto == IPPROTO_ICMPV6) {
1160 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1161 &mask->icmp.type,
1162 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1163 sizeof(key->icmp.type));
040587af 1164 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 1165 &mask->icmp.code,
040587af 1166 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 1167 sizeof(key->icmp.code));
a577d8f7
BL		 1168 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1169 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1a7fca63
BL		 1170 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1171 if (ret)
1172 return ret;
99d31326
SH		 1173 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1174 key->basic.n_proto == htons(ETH_P_RARP)) {
1175 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1176 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1177 sizeof(key->arp.sip));
1178 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1179 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1180 sizeof(key->arp.tip));
1181 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1182 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1183 sizeof(key->arp.op));
1184 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1185 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1186 sizeof(key->arp.sha));
1187 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1188 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1189 sizeof(key->arp.tha));
77b9900e
JP		 1190 }
1191
5c72299f
AN		 1192 if (key->basic.ip_proto == IPPROTO_TCP ||
1193 key->basic.ip_proto == IPPROTO_UDP ||
1194 key->basic.ip_proto == IPPROTO_SCTP) {
1195 ret = fl_set_key_port_range(tb, key, mask);
1196 if (ret)
1197 return ret;
1198 }
1199
bc3103f1
AV		 1200 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1201 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1202 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1203 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1204 fl_set_key_val(tb, &key->enc_ipv4.src,
1205 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1206 &mask->enc_ipv4.src,
1207 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1208 sizeof(key->enc_ipv4.src));
1209 fl_set_key_val(tb, &key->enc_ipv4.dst,
1210 TCA_FLOWER_KEY_ENC_IPV4_DST,
1211 &mask->enc_ipv4.dst,
1212 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1213 sizeof(key->enc_ipv4.dst));
1214 }
1215
1216 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1217 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1218 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1219 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1220 fl_set_key_val(tb, &key->enc_ipv6.src,
1221 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1222 &mask->enc_ipv6.src,
1223 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1224 sizeof(key->enc_ipv6.src));
1225 fl_set_key_val(tb, &key->enc_ipv6.dst,
1226 TCA_FLOWER_KEY_ENC_IPV6_DST,
1227 &mask->enc_ipv6.dst,
1228 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1229 sizeof(key->enc_ipv6.dst));
1230 }
1231
1232 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1233 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 1234 sizeof(key->enc_key_id.keyid));
1235
f4d997fd
HHZ		 1236 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1237 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1238 sizeof(key->enc_tp.src));
1239
1240 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1241 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1242 sizeof(key->enc_tp.dst));
1243
0e2c17b6
OG		 1244 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1245
0a6e7778
PJV		 1246 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1247 ret = fl_set_enc_opt(tb, key, mask, extack);
1248 if (ret)
1249 return ret;
1250 }
1251
e0ace68a
PB		 1252 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1253 if (ret)
1254 return ret;
1255
d9724772
OG		 1256 if (tb[TCA_FLOWER_KEY_FLAGS])
1257 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 1258
d9724772 1259 return ret;
77b9900e
JP		 1260}
1261
05cd271f
PB		 1262static void fl_mask_copy(struct fl_flow_mask *dst,
1263 struct fl_flow_mask *src)
77b9900e 1264{
05cd271f
PB		 1265 const void *psrc = fl_key_get_start(&src->key, src);
1266 void *pdst = fl_key_get_start(&dst->key, src);
77b9900e 1267
05cd271f
PB		 1268 memcpy(pdst, psrc, fl_mask_range(src));
1269 dst->range = src->range;
77b9900e
JP		 1270}
1271
1272static const struct rhashtable_params fl_ht_params = {
1273 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1274 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1275 .automatic_shrinking = true,
1276};
1277
05cd271f 1278static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
77b9900e 1279{
05cd271f
PB		 1280 mask->filter_ht_params = fl_ht_params;
1281 mask->filter_ht_params.key_len = fl_mask_range(mask);
1282 mask->filter_ht_params.key_offset += mask->range.start;
77b9900e 1283
05cd271f 1284 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
77b9900e
JP		 1285}
1286
1287#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
cb205a81 1288#define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
77b9900e 1289
339ba878
HHZ		 1290#define FL_KEY_IS_MASKED(mask, member) \
1291 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1292 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 1293
1294#define FL_KEY_SET(keys, cnt, id, member) \
1295 do { \
1296 keys[cnt].key_id = id; \
1297 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1298 cnt++; \
1299 } while(0);
1300
339ba878 1301#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 1302 do { \
339ba878 1303 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 1304 FL_KEY_SET(keys, cnt, id, member); \
1305 } while(0);
1306
33fb5cba
JP		 1307static void fl_init_dissector(struct flow_dissector *dissector,
1308 struct fl_flow_key *mask)
77b9900e
JP		 1309{
1310 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1311 size_t cnt = 0;
1312
8212ed77
JP		 1313 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1314 FLOW_DISSECTOR_KEY_META, meta);
42aecaa9 1315 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 1316 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
33fb5cba 1317 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1318 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
33fb5cba 1319 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1320 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
33fb5cba 1321 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1322 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
5c72299f
AN		 1323 if (FL_KEY_IS_MASKED(mask, tp) ||
1324 FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1325 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
33fb5cba 1326 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
4d80cc0a 1327 FLOW_DISSECTOR_KEY_IP, ip);
33fb5cba 1328 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
fdfc7dd6 1329 FLOW_DISSECTOR_KEY_TCP, tcp);
33fb5cba 1330 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
7b684884 1331 FLOW_DISSECTOR_KEY_ICMP, icmp);
33fb5cba 1332 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
99d31326 1333 FLOW_DISSECTOR_KEY_ARP, arp);
33fb5cba 1334 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
a577d8f7 1335 FLOW_DISSECTOR_KEY_MPLS, mpls);
33fb5cba 1336 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
9399ae9a 1337 FLOW_DISSECTOR_KEY_VLAN, vlan);
33fb5cba 1338 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
d64efd09 1339 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
33fb5cba 1340 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1341 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
33fb5cba 1342 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1343 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
33fb5cba 1344 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1345 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
33fb5cba
JP		 1346 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1347 FL_KEY_IS_MASKED(mask, enc_ipv6))
519d1052
HHZ		 1348 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1349 enc_control);
33fb5cba 1350 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
f4d997fd 1351 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
33fb5cba 1352 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
0e2c17b6 1353 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
0a6e7778
PJV		 1354 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1355 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
e0ace68a
PB		 1356 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1357 FLOW_DISSECTOR_KEY_CT, ct);
77b9900e 1358
33fb5cba 1359 skb_flow_dissector_init(dissector, keys, cnt);
05cd271f
PB		 1360}
1361
1362static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1363 struct fl_flow_mask *mask)
1364{
1365 struct fl_flow_mask *newmask;
1366 int err;
1367
1368 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1369 if (!newmask)
1370 return ERR_PTR(-ENOMEM);
1371
1372 fl_mask_copy(newmask, mask);
1373
5c72299f
AN		 1374 if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1375 (newmask->key.tp_min.src && newmask->key.tp_max.src))
1376 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1377
05cd271f
PB		 1378 err = fl_init_mask_hashtable(newmask);
1379 if (err)
1380 goto errout_free;
1381
33fb5cba 1382 fl_init_dissector(&newmask->dissector, &newmask->key);
05cd271f
PB		 1383
1384 INIT_LIST_HEAD_RCU(&newmask->filters);
1385
f48ef4d5 1386 refcount_set(&newmask->refcnt, 1);
195c234d
VB		 1387 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1388 &newmask->ht_node, mask_ht_params);
05cd271f
PB		 1389 if (err)
1390 goto errout_destroy;
1391
259e60f9 1392 spin_lock(&head->masks_lock);
05cd271f 1393 list_add_tail_rcu(&newmask->list, &head->masks);
259e60f9 1394 spin_unlock(&head->masks_lock);
05cd271f
PB		 1395
1396 return newmask;
1397
1398errout_destroy:
1399 rhashtable_destroy(&newmask->ht);
1400errout_free:
1401 kfree(newmask);
1402
1403 return ERR_PTR(err);
77b9900e
JP		 1404}
1405
1406static int fl_check_assign_mask(struct cls_fl_head *head,
05cd271f
PB		 1407 struct cls_fl_filter *fnew,
1408 struct cls_fl_filter *fold,
77b9900e
JP		 1409 struct fl_flow_mask *mask)
1410{
05cd271f 1411 struct fl_flow_mask *newmask;
f48ef4d5 1412 int ret = 0;
77b9900e 1413
f48ef4d5 1414 rcu_read_lock();
195c234d
VB		 1415
1416 /* Insert mask as temporary node to prevent concurrent creation of mask
1417 * with same key. Any concurrent lookups with same key will return
99815f50 1418 * -EAGAIN because mask's refcnt is zero.
195c234d
VB		 1419 */
1420 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1421 &mask->ht_node,
1422 mask_ht_params);
05cd271f 1423 if (!fnew->mask) {
f48ef4d5
VB		 1424 rcu_read_unlock();
1425
195c234d
VB		 1426 if (fold) {
1427 ret = -EINVAL;
1428 goto errout_cleanup;
1429 }
77b9900e 1430
05cd271f 1431 newmask = fl_create_new_mask(head, mask);
195c234d
VB		 1432 if (IS_ERR(newmask)) {
1433 ret = PTR_ERR(newmask);
1434 goto errout_cleanup;
1435 }
77b9900e 1436
05cd271f 1437 fnew->mask = newmask;
f48ef4d5 1438 return 0;
195c234d
VB		 1439 } else if (IS_ERR(fnew->mask)) {
1440 ret = PTR_ERR(fnew->mask);
f6521c58 1441 } else if (fold && fold->mask != fnew->mask) {
f48ef4d5
VB		 1442 ret = -EINVAL;
1443 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1444 /* Mask was deleted concurrently, try again */
1445 ret = -EAGAIN;
05cd271f 1446 }
f48ef4d5
VB		 1447 rcu_read_unlock();
1448 return ret;
195c234d
VB		 1449
1450errout_cleanup:
1451 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1452 mask_ht_params);
195c234d 1453 return ret;
77b9900e
JP		 1454}
1455
1456static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1457 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1458 unsigned long base, struct nlattr **tb,
50a56190 1459 struct nlattr *est, bool ovr,
c24e43d8 1460 struct fl_flow_tmplt *tmplt, bool rtnl_held,
50a56190 1461 struct netlink_ext_ack *extack)
77b9900e 1462{
77b9900e
JP		 1463 int err;
1464
c24e43d8 1465 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
ec6743a1 1466 extack);
77b9900e
JP		 1467 if (err < 0)
1468 return err;
1469
1470 if (tb[TCA_FLOWER_CLASSID]) {
1471 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
c24e43d8
VB		 1472 if (!rtnl_held)
1473 rtnl_lock();
77b9900e 1474 tcf_bind_filter(tp, &f->res, base);
c24e43d8
VB		 1475 if (!rtnl_held)
1476 rtnl_unlock();
77b9900e
JP		 1477 }
1478
1057c55f 1479 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
77b9900e 1480 if (err)
45507529 1481 return err;
77b9900e
JP		 1482
1483 fl_mask_update_range(mask);
1484 fl_set_masked_key(&f->mkey, &f->key, mask);
1485
b95ec7eb
JP		 1486 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1487 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1488 return -EINVAL;
1489 }
1490
77b9900e 1491 return 0;
77b9900e
JP		 1492}
1493
1f17f774
VB		 1494static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1495 struct cls_fl_filter *fold,
1496 bool *in_ht)
1497{
1498 struct fl_flow_mask *mask = fnew->mask;
1499 int err;
1500
9e35552a
VB		 1501 err = rhashtable_lookup_insert_fast(&mask->ht,
1502 &fnew->ht_node,
1503 mask->filter_ht_params);
1f17f774
VB		 1504 if (err) {
1505 *in_ht = false;
1506 /* It is okay if filter with same key exists when
1507 * overwriting.
1508 */
1509 return fold && err == -EEXIST ? 0 : err;
1510 }
1511
1512 *in_ht = true;
1513 return 0;
1514}
1515
77b9900e
JP		 1516static int fl_change(struct net *net, struct sk_buff *in_skb,
1517 struct tcf_proto *tp, unsigned long base,
1518 u32 handle, struct nlattr **tca,
12db03b6
VB		 1519 void **arg, bool ovr, bool rtnl_held,
1520 struct netlink_ext_ack *extack)
77b9900e 1521{
e474619a 1522 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 1523 struct cls_fl_filter *fold = *arg;
77b9900e 1524 struct cls_fl_filter *fnew;
2cddd201 1525 struct fl_flow_mask *mask;
39b7b6a6 1526 struct nlattr **tb;
1f17f774 1527 bool in_ht;
77b9900e
JP		 1528 int err;
1529
06177558
VB		 1530 if (!tca[TCA_OPTIONS]) {
1531 err = -EINVAL;
1532 goto errout_fold;
1533 }
77b9900e 1534
2cddd201 1535 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
06177558
VB		 1536 if (!mask) {
1537 err = -ENOBUFS;
1538 goto errout_fold;
1539 }
39b7b6a6 1540
2cddd201
IV		 1541 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1542 if (!tb) {
1543 err = -ENOBUFS;
1544 goto errout_mask_alloc;
1545 }
1546
8cb08174
JB		 1547 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1548 tca[TCA_OPTIONS], fl_policy, NULL);
77b9900e 1549 if (err < 0)
39b7b6a6 1550 goto errout_tb;
77b9900e 1551
39b7b6a6
AB		 1552 if (fold && handle && fold->handle != handle) {
1553 err = -EINVAL;
1554 goto errout_tb;
1555 }
77b9900e
JP		 1556
1557 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 1558 if (!fnew) {
1559 err = -ENOBUFS;
1560 goto errout_tb;
1561 }
c049d56e 1562 INIT_LIST_HEAD(&fnew->hw_list);
06177558 1563 refcount_set(&fnew->refcnt, 1);
77b9900e 1564
14215108 1565 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
b9a24bb7
WC		 1566 if (err < 0)
1567 goto errout;
77b9900e 1568
e69985c6
AV		 1569 if (tb[TCA_FLOWER_FLAGS]) {
1570 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1571
1572 if (!tc_flags_valid(fnew->flags)) {
1573 err = -EINVAL;
ecb3dea4 1574 goto errout;
e69985c6
AV		 1575 }
1576 }
5b33f488 1577
2cddd201 1578 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
c24e43d8 1579 tp->chain->tmplt_priv, rtnl_held, extack);
77b9900e 1580 if (err)
ecb3dea4 1581 goto errout;
77b9900e 1582
2cddd201 1583 err = fl_check_assign_mask(head, fnew, fold, mask);
77b9900e 1584 if (err)
ecb3dea4
VB		 1585 goto errout;
1586
1f17f774
VB		 1587 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1588 if (err)
1589 goto errout_mask;
1590
79685219 1591 if (!tc_skip_hw(fnew->flags)) {
c24e43d8 1592 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
79685219 1593 if (err)
1f17f774 1594 goto errout_ht;
79685219 1595 }
5b33f488 1596
55593960
OG		 1597 if (!tc_in_hw(fnew->flags))
1598 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1599
3d81e711
VB		 1600 spin_lock(&tp->lock);
1601
272ffaad
VB		 1602 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
1603 * proto again or create new one, if necessary.
1604 */
1605 if (tp->deleting) {
1606 err = -EAGAIN;
1607 goto errout_hw;
1608 }
1609
5b33f488 1610 if (fold) {
b2552b8c
VB		 1611 /* Fold filter was deleted concurrently. Retry lookup. */
1612 if (fold->deleted) {
1613 err = -EAGAIN;
1614 goto errout_hw;
1615 }
1616
620da486
VB		 1617 fnew->handle = handle;
1618
1f17f774
VB		 1619 if (!in_ht) {
1620 struct rhashtable_params params =
1621 fnew->mask->filter_ht_params;
1622
1623 err = rhashtable_insert_fast(&fnew->mask->ht,
1624 &fnew->ht_node,
1625 params);
1626 if (err)
1627 goto errout_hw;
1628 in_ht = true;
1629 }
620da486 1630
c049d56e 1631 refcount_inc(&fnew->refcnt);
599d2570
RD		 1632 rhashtable_remove_fast(&fold->mask->ht,
1633 &fold->ht_node,
1634 fold->mask->filter_ht_params);
234a4624 1635 idr_replace(&head->handle_idr, fnew, fnew->handle);
ff3532f2 1636 list_replace_rcu(&fold->list, &fnew->list);
b2552b8c 1637 fold->deleted = true;
620da486 1638
3d81e711
VB		 1639 spin_unlock(&tp->lock);
1640
9994677c 1641 fl_mask_put(head, fold->mask);
620da486 1642 if (!tc_skip_hw(fold->flags))
c24e43d8 1643 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
77b9900e 1644 tcf_unbind_filter(tp, &fold->res);
06177558
VB		 1645 /* Caller holds reference to fold, so refcnt is always > 0
1646 * after this.
1647 */
1648 refcount_dec(&fold->refcnt);
1649 __fl_put(fold);
77b9900e 1650 } else {
620da486
VB		 1651 if (handle) {
1652 /* user specifies a handle and it doesn't exist */
1653 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1654 handle, GFP_ATOMIC);
9a2d9389
VB		 1655
1656 /* Filter with specified handle was concurrently
1657 * inserted after initial check in cls_api. This is not
1658 * necessarily an error if NLM_F_EXCL is not set in
1659 * message flags. Returning EAGAIN will cause cls_api to
1660 * try to update concurrently inserted rule.
1661 */
1662 if (err == -ENOSPC)
1663 err = -EAGAIN;
620da486
VB		 1664 } else {
1665 handle = 1;
1666 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1667 INT_MAX, GFP_ATOMIC);
1668 }
1669 if (err)
1670 goto errout_hw;
1671
c049d56e 1672 refcount_inc(&fnew->refcnt);
620da486 1673 fnew->handle = handle;
05cd271f 1674 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
3d81e711 1675 spin_unlock(&tp->lock);
77b9900e
JP		 1676 }
1677
620da486
VB		 1678 *arg = fnew;
1679
39b7b6a6 1680 kfree(tb);
99815f50 1681 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
77b9900e
JP		 1682 return 0;
1683
c049d56e
VB		 1684errout_ht:
1685 spin_lock(&tp->lock);
620da486 1686errout_hw:
c049d56e 1687 fnew->deleted = true;
3d81e711 1688 spin_unlock(&tp->lock);
620da486 1689 if (!tc_skip_hw(fnew->flags))
c24e43d8 1690 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1f17f774
VB		 1691 if (in_ht)
1692 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1693 fnew->mask->filter_ht_params);
ecb3dea4 1694errout_mask:
9994677c 1695 fl_mask_put(head, fnew->mask);
77b9900e 1696errout:
c049d56e 1697 __fl_put(fnew);
39b7b6a6
AB		 1698errout_tb:
1699 kfree(tb);
2cddd201 1700errout_mask_alloc:
99815f50 1701 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
06177558
VB		 1702errout_fold:
1703 if (fold)
1704 __fl_put(fold);
77b9900e
JP		 1705 return err;
1706}
1707
571acf21 1708static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
12db03b6 1709 bool rtnl_held, struct netlink_ext_ack *extack)
77b9900e 1710{
e474619a 1711 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 1712 struct cls_fl_filter *f = arg;
b2552b8c
VB		 1713 bool last_on_mask;
1714 int err = 0;
77b9900e 1715
c24e43d8 1716 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
05cd271f 1717 *last = list_empty(&head->masks);
06177558
VB		 1718 __fl_put(f);
1719
b2552b8c 1720 return err;
77b9900e
JP		 1721}
1722
12db03b6
VB		 1723static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
1724 bool rtnl_held)
77b9900e 1725{
d39d7149
CW		 1726 struct cls_fl_head *head = fl_head_dereference(tp);
1727 unsigned long id = arg->cookie, tmp;
77b9900e 1728 struct cls_fl_filter *f;
05cd271f 1729
01683a14
VB		 1730 arg->count = arg->skip;
1731
d39d7149
CW		 1732 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
1733 /* don't return filters that are being deleted */
1734 if (!refcount_inc_not_zero(&f->refcnt))
1735 continue;
01683a14 1736 if (arg->fn(tp, f, arg) < 0) {
06177558 1737 __fl_put(f);
01683a14
VB		 1738 arg->stop = 1;
1739 break;
05cd271f 1740 }
06177558 1741 __fl_put(f);
01683a14 1742 arg->count++;
77b9900e 1743 }
d39d7149 1744 arg->cookie = id;
77b9900e
JP		 1745}
1746
c049d56e
VB		 1747static struct cls_fl_filter *
1748fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
1749{
1750 struct cls_fl_head *head = fl_head_dereference(tp);
1751
1752 spin_lock(&tp->lock);
1753 if (list_empty(&head->hw_filters)) {
1754 spin_unlock(&tp->lock);
1755 return NULL;
1756 }
1757
1758 if (!f)
1759 f = list_entry(&head->hw_filters, struct cls_fl_filter,
1760 hw_list);
1761 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
1762 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
1763 spin_unlock(&tp->lock);
1764 return f;
1765 }
1766 }
1767
1768 spin_unlock(&tp->lock);
1769 return NULL;
1770}
1771
a7323311 1772static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
31533cba
JH		 1773 void *cb_priv, struct netlink_ext_ack *extack)
1774{
31533cba 1775 struct tcf_block *block = tp->chain->block;
f9e30088 1776 struct flow_cls_offload cls_flower = {};
c049d56e 1777 struct cls_fl_filter *f = NULL;
31533cba
JH		 1778 int err;
1779
c049d56e
VB		 1780 /* hw_filters list can only be changed by hw offload functions after
1781 * obtaining rtnl lock. Make sure it is not changed while reoffload is
1782 * iterating it.
1783 */
1784 ASSERT_RTNL();
3a7b6861 1785
c049d56e 1786 while ((f = fl_get_next_hw_filter(tp, f, add))) {
95e27a4d
JH		 1787 cls_flower.rule =
1788 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
1789 if (!cls_flower.rule) {
1790 __fl_put(f);
1791 return -ENOMEM;
1792 }
31533cba 1793
95e27a4d 1794 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
d6787147 1795 extack);
95e27a4d 1796 cls_flower.command = add ?
f9e30088 1797 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
95e27a4d
JH		 1798 cls_flower.cookie = (unsigned long)f;
1799 cls_flower.rule->match.dissector = &f->mask->dissector;
1800 cls_flower.rule->match.mask = &f->mask->key;
1801 cls_flower.rule->match.key = &f->mkey;
1802
9838b20a
VB		 1803 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,
1804 true);
95e27a4d 1805 if (err) {
8f256622 1806 kfree(cls_flower.rule);
95e27a4d
JH		 1807 if (tc_skip_sw(f->flags)) {
1808 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
1809 __fl_put(f);
1810 return err;
31533cba 1811 }
95e27a4d
JH		 1812 goto next_flow;
1813 }
31533cba 1814
95e27a4d
JH		 1815 cls_flower.classid = f->res.classid;
1816
40119211
VB		 1817 err = tc_setup_cb_reoffload(block, tp, add, cb,
1818 TC_SETUP_CLSFLOWER, &cls_flower,
1819 cb_priv, &f->flags,
1820 &f->in_hw_count);
5a6ff4b1 1821 tc_cleanup_flow_action(&cls_flower.rule->action);
95e27a4d
JH		 1822 kfree(cls_flower.rule);
1823
1824 if (err) {
40119211
VB		 1825 __fl_put(f);
1826 return err;
31533cba 1827 }
95e27a4d 1828next_flow:
95e27a4d 1829 __fl_put(f);
31533cba
JH		 1830 }
1831
1832 return 0;
1833}
1834
a449a3e7
VB		 1835static void fl_hw_add(struct tcf_proto *tp, void *type_data)
1836{
1837 struct flow_cls_offload *cls_flower = type_data;
1838 struct cls_fl_filter *f =
1839 (struct cls_fl_filter *) cls_flower->cookie;
1840 struct cls_fl_head *head = fl_head_dereference(tp);
1841
1842 spin_lock(&tp->lock);
1843 list_add(&f->hw_list, &head->hw_filters);
1844 spin_unlock(&tp->lock);
1845}
1846
1847static void fl_hw_del(struct tcf_proto *tp, void *type_data)
1848{
1849 struct flow_cls_offload *cls_flower = type_data;
1850 struct cls_fl_filter *f =
1851 (struct cls_fl_filter *) cls_flower->cookie;
1852
1853 spin_lock(&tp->lock);
1854 if (!list_empty(&f->hw_list))
1855 list_del_init(&f->hw_list);
1856 spin_unlock(&tp->lock);
1857}
1858
8f256622
PNA		 1859static int fl_hw_create_tmplt(struct tcf_chain *chain,
1860 struct fl_flow_tmplt *tmplt)
34738452 1861{
f9e30088 1862 struct flow_cls_offload cls_flower = {};
34738452 1863 struct tcf_block *block = chain->block;
34738452 1864
e3ab786b 1865 cls_flower.rule = flow_rule_alloc(0);
8f256622
PNA		 1866 if (!cls_flower.rule)
1867 return -ENOMEM;
1868
34738452 1869 cls_flower.common.chain_index = chain->index;
f9e30088 1870 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
34738452 1871 cls_flower.cookie = (unsigned long) tmplt;
8f256622
PNA		 1872 cls_flower.rule->match.dissector = &tmplt->dissector;
1873 cls_flower.rule->match.mask = &tmplt->mask;
1874 cls_flower.rule->match.key = &tmplt->dummy_key;
34738452
JP		 1875
1876 /* We don't care if driver (any of them) fails to handle this
1877 * call. It serves just as a hint for it.
1878 */
40119211 1879 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
8f256622
PNA		 1880 kfree(cls_flower.rule);
1881
1882 return 0;
34738452
JP		 1883}
1884
1885static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
1886 struct fl_flow_tmplt *tmplt)
1887{
f9e30088 1888 struct flow_cls_offload cls_flower = {};
34738452
JP		 1889 struct tcf_block *block = chain->block;
1890
1891 cls_flower.common.chain_index = chain->index;
f9e30088 1892 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
34738452
JP		 1893 cls_flower.cookie = (unsigned long) tmplt;
1894
40119211 1895 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
34738452
JP		 1896}
1897
b95ec7eb
JP		 1898static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
1899 struct nlattr **tca,
1900 struct netlink_ext_ack *extack)
1901{
1902 struct fl_flow_tmplt *tmplt;
1903 struct nlattr **tb;
1904 int err;
1905
1906 if (!tca[TCA_OPTIONS])
1907 return ERR_PTR(-EINVAL);
1908
1909 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1910 if (!tb)
1911 return ERR_PTR(-ENOBUFS);
8cb08174
JB		 1912 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1913 tca[TCA_OPTIONS], fl_policy, NULL);
b95ec7eb
JP		 1914 if (err)
1915 goto errout_tb;
1916
1917 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1cbc36a5
DC		 1918 if (!tmplt) {
1919 err = -ENOMEM;
b95ec7eb 1920 goto errout_tb;
1cbc36a5 1921 }
b95ec7eb
JP		 1922 tmplt->chain = chain;
1923 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
1924 if (err)
1925 goto errout_tmplt;
b95ec7eb
JP		 1926
1927 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
1928
8f256622
PNA		 1929 err = fl_hw_create_tmplt(chain, tmplt);
1930 if (err)
1931 goto errout_tmplt;
34738452 1932
8f256622 1933 kfree(tb);
b95ec7eb
JP		 1934 return tmplt;
1935
1936errout_tmplt:
1937 kfree(tmplt);
1938errout_tb:
1939 kfree(tb);
1940 return ERR_PTR(err);
1941}
1942
ec3ed293
VB		 1943static void fl_tmplt_destroy(void *tmplt_priv)
1944{
1945 struct fl_flow_tmplt *tmplt = tmplt_priv;
1946
95278dda
CW		 1947 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
1948 kfree(tmplt);
ec3ed293
VB		 1949}
1950
77b9900e
JP		 1951static int fl_dump_key_val(struct sk_buff *skb,
1952 void *val, int val_type,
1953 void *mask, int mask_type, int len)
1954{
1955 int err;
1956
1957 if (!memchr_inv(mask, 0, len))
1958 return 0;
1959 err = nla_put(skb, val_type, len, val);
1960 if (err)
1961 return err;
1962 if (mask_type != TCA_FLOWER_UNSPEC) {
1963 err = nla_put(skb, mask_type, len, mask);
1964 if (err)
1965 return err;
1966 }
1967 return 0;
1968}
1969
5c72299f
AN		 1970static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
1971 struct fl_flow_key *mask)
1972{
1973 if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
1974 &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
1975 sizeof(key->tp_min.dst)) ||
1976 fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
1977 &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
1978 sizeof(key->tp_max.dst)) ||
1979 fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
1980 &mask->tp_min.src, TCA_FLOWER_UNSPEC,
1981 sizeof(key->tp_min.src)) ||
1982 fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
1983 &mask->tp_max.src, TCA_FLOWER_UNSPEC,
1984 sizeof(key->tp_max.src)))
1985 return -1;
1986
1987 return 0;
1988}
1989
a577d8f7
BL		 1990static int fl_dump_key_mpls(struct sk_buff *skb,
1991 struct flow_dissector_key_mpls *mpls_key,
1992 struct flow_dissector_key_mpls *mpls_mask)
1993{
1994 int err;
1995
1996 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1997 return 0;
1998 if (mpls_mask->mpls_ttl) {
1999 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2000 mpls_key->mpls_ttl);
2001 if (err)
2002 return err;
2003 }
2004 if (mpls_mask->mpls_tc) {
2005 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2006 mpls_key->mpls_tc);
2007 if (err)
2008 return err;
2009 }
2010 if (mpls_mask->mpls_label) {
2011 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2012 mpls_key->mpls_label);
2013 if (err)
2014 return err;
2015 }
2016 if (mpls_mask->mpls_bos) {
2017 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2018 mpls_key->mpls_bos);
2019 if (err)
2020 return err;
2021 }
2022 return 0;
2023}
2024
0e2c17b6 2025static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
4d80cc0a
OG		 2026 struct flow_dissector_key_ip *key,
2027 struct flow_dissector_key_ip *mask)
2028{
0e2c17b6
OG		 2029 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2030 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2031 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2032 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2033
2034 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2035 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
4d80cc0a
OG		 2036 return -1;
2037
2038 return 0;
2039}
2040
9399ae9a 2041static int fl_dump_key_vlan(struct sk_buff *skb,
d64efd09 2042 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 2043 struct flow_dissector_key_vlan *vlan_key,
2044 struct flow_dissector_key_vlan *vlan_mask)
2045{
2046 int err;
2047
2048 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2049 return 0;
2050 if (vlan_mask->vlan_id) {
d64efd09 2051 err = nla_put_u16(skb, vlan_id_key,
9399ae9a
HHZ		 2052 vlan_key->vlan_id);
2053 if (err)
2054 return err;
2055 }
2056 if (vlan_mask->vlan_priority) {
d64efd09 2057 err = nla_put_u8(skb, vlan_prio_key,
9399ae9a
HHZ		 2058 vlan_key->vlan_priority);
2059 if (err)
2060 return err;
2061 }
2062 return 0;
2063}
2064
faa3ffce
OG		 2065static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2066 u32 *flower_key, u32 *flower_mask,
2067 u32 flower_flag_bit, u32 dissector_flag_bit)
2068{
2069 if (dissector_mask & dissector_flag_bit) {
2070 *flower_mask |= flower_flag_bit;
2071 if (dissector_key & dissector_flag_bit)
2072 *flower_key |= flower_flag_bit;
2073 }
2074}
2075
2076static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2077{
2078 u32 key, mask;
2079 __be32 _key, _mask;
2080 int err;
2081
2082 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2083 return 0;
2084
2085 key = 0;
2086 mask = 0;
2087
2088 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2089 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 2090 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2091 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2092 FLOW_DIS_FIRST_FRAG);
faa3ffce
OG		 2093
2094 _key = cpu_to_be32(key);
2095 _mask = cpu_to_be32(mask);
2096
2097 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2098 if (err)
2099 return err;
2100
2101 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2102}
2103
0a6e7778
PJV		 2104static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2105 struct flow_dissector_key_enc_opts *enc_opts)
2106{
2107 struct geneve_opt *opt;
2108 struct nlattr *nest;
2109 int opt_off = 0;
2110
ae0be8de 2111 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
0a6e7778
PJV		 2112 if (!nest)
2113 goto nla_put_failure;
2114
2115 while (enc_opts->len > opt_off) {
2116 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2117
2118 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2119 opt->opt_class))
2120 goto nla_put_failure;
2121 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2122 opt->type))
2123 goto nla_put_failure;
2124 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2125 opt->length * 4, opt->opt_data))
2126 goto nla_put_failure;
2127
2128 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2129 }
2130 nla_nest_end(skb, nest);
2131 return 0;
2132
2133nla_put_failure:
2134 nla_nest_cancel(skb, nest);
2135 return -EMSGSIZE;
2136}
2137
e0ace68a
PB		 2138static int fl_dump_key_ct(struct sk_buff *skb,
2139 struct flow_dissector_key_ct *key,
2140 struct flow_dissector_key_ct *mask)
2141{
2142 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2143 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2144 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2145 sizeof(key->ct_state)))
2146 goto nla_put_failure;
2147
2148 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2149 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2150 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2151 sizeof(key->ct_zone)))
2152 goto nla_put_failure;
2153
2154 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2155 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2156 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2157 sizeof(key->ct_mark)))
2158 goto nla_put_failure;
2159
2160 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2161 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2162 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2163 sizeof(key->ct_labels)))
2164 goto nla_put_failure;
2165
2166 return 0;
2167
2168nla_put_failure:
2169 return -EMSGSIZE;
2170}
2171
0a6e7778
PJV		 2172static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2173 struct flow_dissector_key_enc_opts *enc_opts)
2174{
2175 struct nlattr *nest;
2176 int err;
2177
2178 if (!enc_opts->len)
2179 return 0;
2180
ae0be8de 2181 nest = nla_nest_start_noflag(skb, enc_opt_type);
0a6e7778
PJV		 2182 if (!nest)
2183 goto nla_put_failure;
2184
2185 switch (enc_opts->dst_opt_type) {
2186 case TUNNEL_GENEVE_OPT:
2187 err = fl_dump_key_geneve_opt(skb, enc_opts);
2188 if (err)
2189 goto nla_put_failure;
2190 break;
2191 default:
2192 goto nla_put_failure;
2193 }
2194 nla_nest_end(skb, nest);
2195 return 0;
2196
2197nla_put_failure:
2198 nla_nest_cancel(skb, nest);
2199 return -EMSGSIZE;
2200}
2201
2202static int fl_dump_key_enc_opt(struct sk_buff *skb,
2203 struct flow_dissector_key_enc_opts *key_opts,
2204 struct flow_dissector_key_enc_opts *msk_opts)
2205{
2206 int err;
2207
2208 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2209 if (err)
2210 return err;
2211
2212 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2213}
2214
f5749081
JP		 2215static int fl_dump_key(struct sk_buff *skb, struct net *net,
2216 struct fl_flow_key *key, struct fl_flow_key *mask)
77b9900e 2217{
8212ed77 2218 if (mask->meta.ingress_ifindex) {
77b9900e
JP		 2219 struct net_device *dev;
2220
8212ed77 2221 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
77b9900e
JP		 2222 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2223 goto nla_put_failure;
2224 }
2225
2226 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2227 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2228 sizeof(key->eth.dst)) ||
2229 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2230 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2231 sizeof(key->eth.src)) ||
2232 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2233 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2234 sizeof(key->basic.n_proto)))
2235 goto nla_put_failure;
9399ae9a 2236
a577d8f7
BL		 2237 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2238 goto nla_put_failure;
2239
d64efd09
JL		 2240 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2241 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
9399ae9a
HHZ		 2242 goto nla_put_failure;
2243
d64efd09
JL		 2244 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2245 TCA_FLOWER_KEY_CVLAN_PRIO,
2246 &key->cvlan, &mask->cvlan) ||
2247 (mask->cvlan.vlan_tpid &&
158abbf1
JL		 2248 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2249 key->cvlan.vlan_tpid)))
d3069512
JL		 2250 goto nla_put_failure;
2251
5e9a0fe4
JL		 2252 if (mask->basic.n_proto) {
2253 if (mask->cvlan.vlan_tpid) {
2254 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2255 key->basic.n_proto))
2256 goto nla_put_failure;
2257 } else if (mask->vlan.vlan_tpid) {
2258 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2259 key->basic.n_proto))
2260 goto nla_put_failure;
2261 }
d64efd09
JL		 2262 }
2263
77b9900e
JP		 2264 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2265 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 2266 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 2267 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a 2268 sizeof(key->basic.ip_proto)) ||
0e2c17b6 2269 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
77b9900e
JP		 2270 goto nla_put_failure;
2271
c3f83241 2272 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 2273 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2274 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2275 sizeof(key->ipv4.src)) ||
2276 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2277 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2278 sizeof(key->ipv4.dst))))
2279 goto nla_put_failure;
c3f83241 2280 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 2281 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2282 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2283 sizeof(key->ipv6.src)) ||
2284 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2285 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2286 sizeof(key->ipv6.dst))))
2287 goto nla_put_failure;
2288
2289 if (key->basic.ip_proto == IPPROTO_TCP &&
2290 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 2291 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 2292 sizeof(key->tp.src)) ||
2293 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 2294 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 2295 sizeof(key->tp.dst)) ||
2296 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2297 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2298 sizeof(key->tcp.flags))))
77b9900e
JP		 2299 goto nla_put_failure;
2300 else if (key->basic.ip_proto == IPPROTO_UDP &&
2301 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 2302 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 2303 sizeof(key->tp.src)) ||
2304 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 2305 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 2306 sizeof(key->tp.dst))))
2307 goto nla_put_failure;
2308 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2309 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2310 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2311 sizeof(key->tp.src)) ||
2312 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2313 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 2314 sizeof(key->tp.dst))))
2315 goto nla_put_failure;
7b684884
SH		 2316 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2317 key->basic.ip_proto == IPPROTO_ICMP &&
2318 (fl_dump_key_val(skb, &key->icmp.type,
2319 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2320 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2321 sizeof(key->icmp.type)) ||
2322 fl_dump_key_val(skb, &key->icmp.code,
2323 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2324 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2325 sizeof(key->icmp.code))))
2326 goto nla_put_failure;
2327 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2328 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2329 (fl_dump_key_val(skb, &key->icmp.type,
2330 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2331 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2332 sizeof(key->icmp.type)) ||
2333 fl_dump_key_val(skb, &key->icmp.code,
2334 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2335 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2336 sizeof(key->icmp.code))))
2337 goto nla_put_failure;
99d31326
SH		 2338 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2339 key->basic.n_proto == htons(ETH_P_RARP)) &&
2340 (fl_dump_key_val(skb, &key->arp.sip,
2341 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2342 TCA_FLOWER_KEY_ARP_SIP_MASK,
2343 sizeof(key->arp.sip)) ||
2344 fl_dump_key_val(skb, &key->arp.tip,
2345 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2346 TCA_FLOWER_KEY_ARP_TIP_MASK,
2347 sizeof(key->arp.tip)) ||
2348 fl_dump_key_val(skb, &key->arp.op,
2349 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2350 TCA_FLOWER_KEY_ARP_OP_MASK,
2351 sizeof(key->arp.op)) ||
2352 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2353 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2354 sizeof(key->arp.sha)) ||
2355 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2356 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2357 sizeof(key->arp.tha))))
2358 goto nla_put_failure;
77b9900e 2359
5c72299f
AN		 2360 if ((key->basic.ip_proto == IPPROTO_TCP ||
2361 key->basic.ip_proto == IPPROTO_UDP ||
2362 key->basic.ip_proto == IPPROTO_SCTP) &&
2363 fl_dump_key_port_range(skb, key, mask))
2364 goto nla_put_failure;
2365
bc3103f1
AV		 2366 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2367 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2368 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2369 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2370 sizeof(key->enc_ipv4.src)) ||
2371 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2372 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2373 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2374 sizeof(key->enc_ipv4.dst))))
2375 goto nla_put_failure;
2376 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2377 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2378 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2379 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2380 sizeof(key->enc_ipv6.src)) ||
2381 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2382 TCA_FLOWER_KEY_ENC_IPV6_DST,
2383 &mask->enc_ipv6.dst,
2384 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2385 sizeof(key->enc_ipv6.dst))))
2386 goto nla_put_failure;
2387
2388 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 2389 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 2390 sizeof(key->enc_key_id)) ||
2391 fl_dump_key_val(skb, &key->enc_tp.src,
2392 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2393 &mask->enc_tp.src,
2394 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2395 sizeof(key->enc_tp.src)) ||
2396 fl_dump_key_val(skb, &key->enc_tp.dst,
2397 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2398 &mask->enc_tp.dst,
2399 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
0e2c17b6 2400 sizeof(key->enc_tp.dst)) ||
0a6e7778
PJV		 2401 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2402 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
bc3103f1
AV		 2403 goto nla_put_failure;
2404
e0ace68a
PB		 2405 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
2406 goto nla_put_failure;
2407
faa3ffce
OG		 2408 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2409 goto nla_put_failure;
2410
f5749081
JP		 2411 return 0;
2412
2413nla_put_failure:
2414 return -EMSGSIZE;
2415}
2416
2417static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
12db03b6 2418 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
f5749081
JP		 2419{
2420 struct cls_fl_filter *f = fh;
2421 struct nlattr *nest;
2422 struct fl_flow_key *key, *mask;
3d81e711 2423 bool skip_hw;
f5749081
JP		 2424
2425 if (!f)
2426 return skb->len;
2427
2428 t->tcm_handle = f->handle;
2429
ae0be8de 2430 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
f5749081
JP		 2431 if (!nest)
2432 goto nla_put_failure;
2433
3d81e711
VB		 2434 spin_lock(&tp->lock);
2435
f5749081
JP		 2436 if (f->res.classid &&
2437 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3d81e711 2438 goto nla_put_failure_locked;
f5749081
JP		 2439
2440 key = &f->key;
2441 mask = &f->mask->key;
3d81e711 2442 skip_hw = tc_skip_hw(f->flags);
f5749081
JP		 2443
2444 if (fl_dump_key(skb, net, key, mask))
3d81e711 2445 goto nla_put_failure_locked;
f5749081 2446
749e6720 2447 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3d81e711
VB		 2448 goto nla_put_failure_locked;
2449
2450 spin_unlock(&tp->lock);
2451
2452 if (!skip_hw)
c24e43d8 2453 fl_hw_update_stats(tp, f, rtnl_held);
e69985c6 2454
86c55361
VB		 2455 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2456 goto nla_put_failure;
2457
77b9900e
JP		 2458 if (tcf_exts_dump(skb, &f->exts))
2459 goto nla_put_failure;
2460
2461 nla_nest_end(skb, nest);
2462
2463 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2464 goto nla_put_failure;
2465
2466 return skb->len;
2467
3d81e711
VB		 2468nla_put_failure_locked:
2469 spin_unlock(&tp->lock);
77b9900e
JP		 2470nla_put_failure:
2471 nla_nest_cancel(skb, nest);
2472 return -1;
2473}
2474
b95ec7eb
JP		 2475static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2476{
2477 struct fl_flow_tmplt *tmplt = tmplt_priv;
2478 struct fl_flow_key *key, *mask;
2479 struct nlattr *nest;
2480
ae0be8de 2481 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
b95ec7eb
JP		 2482 if (!nest)
2483 goto nla_put_failure;
2484
2485 key = &tmplt->dummy_key;
2486 mask = &tmplt->mask;
2487
2488 if (fl_dump_key(skb, net, key, mask))
2489 goto nla_put_failure;
2490
2491 nla_nest_end(skb, nest);
2492
2493 return skb->len;
2494
2495nla_put_failure:
2496 nla_nest_cancel(skb, nest);
2497 return -EMSGSIZE;
2498}
2499
07d79fc7
CW		 2500static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2501{
2502 struct cls_fl_filter *f = fh;
2503
2504 if (f && f->res.classid == classid)
2505 f->res.class = cl;
2506}
2507
77b9900e
JP		 2508static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2509 .kind = "flower",
2510 .classify = fl_classify,
2511 .init = fl_init,
2512 .destroy = fl_destroy,
2513 .get = fl_get,
06177558 2514 .put = fl_put,
77b9900e
JP		 2515 .change = fl_change,
2516 .delete = fl_delete,
2517 .walk = fl_walk,
31533cba 2518 .reoffload = fl_reoffload,
a449a3e7
VB		 2519 .hw_add = fl_hw_add,
2520 .hw_del = fl_hw_del,
77b9900e 2521 .dump = fl_dump,
07d79fc7 2522 .bind_class = fl_bind_class,
b95ec7eb
JP		 2523 .tmplt_create = fl_tmplt_create,
2524 .tmplt_destroy = fl_tmplt_destroy,
2525 .tmplt_dump = fl_tmplt_dump,
77b9900e 2526 .owner = THIS_MODULE,
92149190 2527 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
77b9900e
JP		 2528};
2529
2530static int __init cls_fl_init(void)
2531{
2532 return register_tcf_proto_ops(&cls_fl_ops);
2533}
2534
2535static void __exit cls_fl_exit(void)
2536{
2537 unregister_tcf_proto_ops(&cls_fl_ops);
2538}
2539
2540module_init(cls_fl_init);
2541module_exit(cls_fl_exit);
2542
2543MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2544MODULE_DESCRIPTION("Flower classifier");
2545MODULE_LICENSE("GPL v2");
Ubuntu Hirsute Linux kernel mirror