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Merge tag 'for-linus-2021-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-block.git] / net / sched / cls_flower.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
77b9900e
JP		 2/*
3 * net/sched/cls_flower.c Flower classifier
4 *
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
77b9900e
JP		 6 */
7
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/rhashtable.h>
d9363774 12#include <linux/workqueue.h>
06177558 13#include <linux/refcount.h>
77b9900e
JP		 14
15#include <linux/if_ether.h>
16#include <linux/in6.h>
17#include <linux/ip.h>
a577d8f7 18#include <linux/mpls.h>
77b9900e
JP		 19
20#include <net/sch_generic.h>
21#include <net/pkt_cls.h>
22#include <net/ip.h>
23#include <net/flow_dissector.h>
0a6e7778 24#include <net/geneve.h>
d8f9dfae 25#include <net/vxlan.h>
79b1011c 26#include <net/erspan.h>
77b9900e 27
bc3103f1
AV		 28#include <net/dst.h>
29#include <net/dst_metadata.h>
30
e0ace68a
PB		 31#include <uapi/linux/netfilter/nf_conntrack_common.h>
32
77b9900e 33struct fl_flow_key {
8212ed77 34 struct flow_dissector_key_meta meta;
42aecaa9 35 struct flow_dissector_key_control control;
bc3103f1 36 struct flow_dissector_key_control enc_control;
77b9900e
JP		 37 struct flow_dissector_key_basic basic;
38 struct flow_dissector_key_eth_addrs eth;
9399ae9a 39 struct flow_dissector_key_vlan vlan;
d64efd09 40 struct flow_dissector_key_vlan cvlan;
77b9900e 41 union {
c3f83241 42 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 43 struct flow_dissector_key_ipv6_addrs ipv6;
44 };
45 struct flow_dissector_key_ports tp;
7b684884 46 struct flow_dissector_key_icmp icmp;
99d31326 47 struct flow_dissector_key_arp arp;
bc3103f1
AV		 48 struct flow_dissector_key_keyid enc_key_id;
49 union {
50 struct flow_dissector_key_ipv4_addrs enc_ipv4;
51 struct flow_dissector_key_ipv6_addrs enc_ipv6;
52 };
f4d997fd 53 struct flow_dissector_key_ports enc_tp;
a577d8f7 54 struct flow_dissector_key_mpls mpls;
fdfc7dd6 55 struct flow_dissector_key_tcp tcp;
4d80cc0a 56 struct flow_dissector_key_ip ip;
0e2c17b6 57 struct flow_dissector_key_ip enc_ip;
0a6e7778 58 struct flow_dissector_key_enc_opts enc_opts;
8ffb055b
YK		 59 union {
60 struct flow_dissector_key_ports tp;
61 struct {
62 struct flow_dissector_key_ports tp_min;
63 struct flow_dissector_key_ports tp_max;
64 };
65 } tp_range;
e0ace68a 66 struct flow_dissector_key_ct ct;
5923b8f7 67 struct flow_dissector_key_hash hash;
77b9900e
JP		 68} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
69
70struct fl_flow_mask_range {
71 unsigned short int start;
72 unsigned short int end;
73};
74
75struct fl_flow_mask {
76 struct fl_flow_key key;
77 struct fl_flow_mask_range range;
5c72299f 78 u32 flags;
05cd271f
PB		 79 struct rhash_head ht_node;
80 struct rhashtable ht;
81 struct rhashtable_params filter_ht_params;
82 struct flow_dissector dissector;
83 struct list_head filters;
44a5cd43 84 struct rcu_work rwork;
05cd271f 85 struct list_head list;
f48ef4d5 86 refcount_t refcnt;
77b9900e
JP		 87};
88
b95ec7eb
JP		 89struct fl_flow_tmplt {
90 struct fl_flow_key dummy_key;
91 struct fl_flow_key mask;
92 struct flow_dissector dissector;
93 struct tcf_chain *chain;
94};
95
77b9900e
JP		 96struct cls_fl_head {
97 struct rhashtable ht;
259e60f9 98 spinlock_t masks_lock; /* Protect masks list */
05cd271f 99 struct list_head masks;
c049d56e 100 struct list_head hw_filters;
aaa908ff 101 struct rcu_work rwork;
c15ab236 102 struct idr handle_idr;
77b9900e
JP		 103};
104
105struct cls_fl_filter {
05cd271f 106 struct fl_flow_mask *mask;
77b9900e
JP		 107 struct rhash_head ht_node;
108 struct fl_flow_key mkey;
109 struct tcf_exts exts;
110 struct tcf_result res;
111 struct fl_flow_key key;
112 struct list_head list;
c049d56e 113 struct list_head hw_list;
77b9900e 114 u32 handle;
e69985c6 115 u32 flags;
86c55361 116 u32 in_hw_count;
aaa908ff 117 struct rcu_work rwork;
7091d8c7 118 struct net_device *hw_dev;
06177558
VB		 119 /* Flower classifier is unlocked, which means that its reference counter
120 * can be changed concurrently without any kind of external
121 * synchronization. Use atomic reference counter to be concurrency-safe.
122 */
123 refcount_t refcnt;
b2552b8c 124 bool deleted;
77b9900e
JP		 125};
126
05cd271f
PB		 127static const struct rhashtable_params mask_ht_params = {
128 .key_offset = offsetof(struct fl_flow_mask, key),
129 .key_len = sizeof(struct fl_flow_key),
130 .head_offset = offsetof(struct fl_flow_mask, ht_node),
131 .automatic_shrinking = true,
132};
133
77b9900e
JP		 134static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
135{
136 return mask->range.end - mask->range.start;
137}
138
139static void fl_mask_update_range(struct fl_flow_mask *mask)
140{
141 const u8 *bytes = (const u8 *) &mask->key;
142 size_t size = sizeof(mask->key);
05cd271f 143 size_t i, first = 0, last;
77b9900e 144
05cd271f
PB		 145 for (i = 0; i < size; i++) {
146 if (bytes[i]) {
147 first = i;
148 break;
149 }
150 }
151 last = first;
152 for (i = size - 1; i != first; i--) {
77b9900e 153 if (bytes[i]) {
77b9900e 154 last = i;
05cd271f 155 break;
77b9900e
JP		 156 }
157 }
158 mask->range.start = rounddown(first, sizeof(long));
159 mask->range.end = roundup(last + 1, sizeof(long));
160}
161
162static void *fl_key_get_start(struct fl_flow_key *key,
163 const struct fl_flow_mask *mask)
164{
165 return (u8 *) key + mask->range.start;
166}
167
168static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
169 struct fl_flow_mask *mask)
170{
171 const long *lkey = fl_key_get_start(key, mask);
172 const long *lmask = fl_key_get_start(&mask->key, mask);
173 long *lmkey = fl_key_get_start(mkey, mask);
174 int i;
175
176 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
177 *lmkey++ = *lkey++ & *lmask++;
178}
179
b95ec7eb
JP		 180static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
181 struct fl_flow_mask *mask)
182{
183 const long *lmask = fl_key_get_start(&mask->key, mask);
184 const long *ltmplt;
185 int i;
186
187 if (!tmplt)
188 return true;
189 ltmplt = fl_key_get_start(&tmplt->mask, mask);
190 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
191 if (~*ltmplt++ & *lmask++)
192 return false;
193 }
194 return true;
195}
196
77b9900e
JP		 197static void fl_clear_masked_range(struct fl_flow_key *key,
198 struct fl_flow_mask *mask)
199{
200 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
201}
202
5c72299f
AN		 203static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
204 struct fl_flow_key *key,
205 struct fl_flow_key *mkey)
206{
207 __be16 min_mask, max_mask, min_val, max_val;
208
8ffb055b
YK		 209 min_mask = htons(filter->mask->key.tp_range.tp_min.dst);
210 max_mask = htons(filter->mask->key.tp_range.tp_max.dst);
211 min_val = htons(filter->key.tp_range.tp_min.dst);
212 max_val = htons(filter->key.tp_range.tp_max.dst);
5c72299f
AN		 213
214 if (min_mask && max_mask) {
8ffb055b
YK		 215 if (htons(key->tp_range.tp.dst) < min_val ||
216 htons(key->tp_range.tp.dst) > max_val)
5c72299f
AN		 217 return false;
218
219 /* skb does not have min and max values */
8ffb055b
YK		 220 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
221 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
5c72299f
AN		 222 }
223 return true;
224}
225
226static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
227 struct fl_flow_key *key,
228 struct fl_flow_key *mkey)
229{
230 __be16 min_mask, max_mask, min_val, max_val;
231
8ffb055b
YK		 232 min_mask = htons(filter->mask->key.tp_range.tp_min.src);
233 max_mask = htons(filter->mask->key.tp_range.tp_max.src);
234 min_val = htons(filter->key.tp_range.tp_min.src);
235 max_val = htons(filter->key.tp_range.tp_max.src);
5c72299f
AN		 236
237 if (min_mask && max_mask) {
8ffb055b
YK		 238 if (htons(key->tp_range.tp.src) < min_val ||
239 htons(key->tp_range.tp.src) > max_val)
5c72299f
AN		 240 return false;
241
242 /* skb does not have min and max values */
8ffb055b
YK		 243 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
244 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
5c72299f
AN		 245 }
246 return true;
247}
248
249static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
250 struct fl_flow_key *mkey)
a3308d8f 251{
05cd271f
PB		 252 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
253 mask->filter_ht_params);
a3308d8f
PB		 254}
255
5c72299f
AN		 256static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
257 struct fl_flow_key *mkey,
258 struct fl_flow_key *key)
259{
260 struct cls_fl_filter *filter, *f;
261
262 list_for_each_entry_rcu(filter, &mask->filters, list) {
263 if (!fl_range_port_dst_cmp(filter, key, mkey))
264 continue;
265
266 if (!fl_range_port_src_cmp(filter, key, mkey))
267 continue;
268
269 f = __fl_lookup(mask, mkey);
270 if (f)
271 return f;
272 }
273 return NULL;
274}
275
0af413bd
AB		 276static noinline_for_stack
277struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
5c72299f 278{
0af413bd
AB		 279 struct fl_flow_key mkey;
280
281 fl_set_masked_key(&mkey, key, mask);
5c72299f 282 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
0af413bd 283 return fl_lookup_range(mask, &mkey, key);
5c72299f 284
0af413bd 285 return __fl_lookup(mask, &mkey);
5c72299f
AN		 286}
287
e0ace68a
PB		 288static u16 fl_ct_info_to_flower_map[] = {
289 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
290 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
291 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
292 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
293 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
294 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
295 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
296 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
297 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
298 TCA_FLOWER_KEY_CT_FLAGS_NEW,
299};
300
77b9900e
JP		 301static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
302 struct tcf_result *res)
303{
304 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
e0ace68a
PB		 305 struct fl_flow_key skb_key;
306 struct fl_flow_mask *mask;
307 struct cls_fl_filter *f;
77b9900e 308
05cd271f 309 list_for_each_entry_rcu(mask, &head->masks, list) {
8a9093c7 310 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
05cd271f 311 fl_clear_masked_range(&skb_key, mask);
bc3103f1 312
8212ed77 313 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
05cd271f
PB		 314 /* skb_flow_dissect() does not set n_proto in case an unknown
315 * protocol, so do it rather here.
316 */
d7bf2ebe 317 skb_key.basic.n_proto = skb_protocol(skb, false);
05cd271f 318 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
e0ace68a
PB		 319 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
320 fl_ct_info_to_flower_map,
321 ARRAY_SIZE(fl_ct_info_to_flower_map));
5923b8f7 322 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
05cd271f 323 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
77b9900e 324
0af413bd 325 f = fl_mask_lookup(mask, &skb_key);
05cd271f
PB		 326 if (f && !tc_skip_sw(f->flags)) {
327 *res = f->res;
328 return tcf_exts_exec(skb, &f->exts, res);
329 }
77b9900e
JP		 330 }
331 return -1;
332}
333
334static int fl_init(struct tcf_proto *tp)
335{
336 struct cls_fl_head *head;
337
338 head = kzalloc(sizeof(*head), GFP_KERNEL);
339 if (!head)
340 return -ENOBUFS;
341
259e60f9 342 spin_lock_init(&head->masks_lock);
05cd271f 343 INIT_LIST_HEAD_RCU(&head->masks);
c049d56e 344 INIT_LIST_HEAD(&head->hw_filters);
77b9900e 345 rcu_assign_pointer(tp->root, head);
c15ab236 346 idr_init(&head->handle_idr);
77b9900e 347
05cd271f
PB		 348 return rhashtable_init(&head->ht, &mask_ht_params);
349}
350
99815f50 351static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
44a5cd43 352{
99815f50
VB		 353 /* temporary masks don't have their filters list and ht initialized */
354 if (mask_init_done) {
355 WARN_ON(!list_empty(&mask->filters));
356 rhashtable_destroy(&mask->ht);
357 }
44a5cd43
PA		 358 kfree(mask);
359}
360
361static void fl_mask_free_work(struct work_struct *work)
362{
363 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
364 struct fl_flow_mask, rwork);
365
99815f50
VB		 366 fl_mask_free(mask, true);
367}
368
369static void fl_uninit_mask_free_work(struct work_struct *work)
370{
371 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
372 struct fl_flow_mask, rwork);
373
374 fl_mask_free(mask, false);
44a5cd43
PA		 375}
376
9994677c 377static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
05cd271f 378{
f48ef4d5 379 if (!refcount_dec_and_test(&mask->refcnt))
05cd271f
PB		 380 return false;
381
382 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
259e60f9
VB		 383
384 spin_lock(&head->masks_lock);
05cd271f 385 list_del_rcu(&mask->list);
259e60f9
VB		 386 spin_unlock(&head->masks_lock);
387
9994677c 388 tcf_queue_work(&mask->rwork, fl_mask_free_work);
05cd271f
PB		 389
390 return true;
77b9900e
JP		 391}
392
c049d56e
VB		 393static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
394{
395 /* Flower classifier only changes root pointer during init and destroy.
396 * Users must obtain reference to tcf_proto instance before calling its
397 * API, so tp->root pointer is protected from concurrent call to
398 * fl_destroy() by reference counting.
399 */
400 return rcu_dereference_raw(tp->root);
401}
402
0dadc117
CW		 403static void __fl_destroy_filter(struct cls_fl_filter *f)
404{
405 tcf_exts_destroy(&f->exts);
406 tcf_exts_put_net(&f->exts);
407 kfree(f);
408}
409
0552c8af 410static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 411{
aaa908ff
CW		 412 struct cls_fl_filter *f = container_of(to_rcu_work(work),
413 struct cls_fl_filter, rwork);
77b9900e 414
0dadc117 415 __fl_destroy_filter(f);
0552c8af
CW		 416}
417
1b0f8037 418static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8 419 bool rtnl_held, struct netlink_ext_ack *extack)
5b33f488 420{
208c0f4b 421 struct tcf_block *block = tp->chain->block;
f9e30088 422 struct flow_cls_offload cls_flower = {};
5b33f488 423
d6787147 424 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 425 cls_flower.command = FLOW_CLS_DESTROY;
de4784ca 426 cls_flower.cookie = (unsigned long) f;
5b33f488 427
40119211 428 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
918190f5 429 &f->flags, &f->in_hw_count, rtnl_held);
c24e43d8 430
5b33f488
AV		 431}
432
e8eb36cd 433static int fl_hw_replace_filter(struct tcf_proto *tp,
c24e43d8 434 struct cls_fl_filter *f, bool rtnl_held,
41002038 435 struct netlink_ext_ack *extack)
5b33f488 436{
208c0f4b 437 struct tcf_block *block = tp->chain->block;
f9e30088 438 struct flow_cls_offload cls_flower = {};
717503b9 439 bool skip_sw = tc_skip_sw(f->flags);
c24e43d8
VB		 440 int err = 0;
441
e3ab786b 442 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
918190f5
VB		 443 if (!cls_flower.rule)
444 return -ENOMEM;
8f256622 445
d6787147 446 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 447 cls_flower.command = FLOW_CLS_REPLACE;
de4784ca 448 cls_flower.cookie = (unsigned long) f;
8f256622
PNA		 449 cls_flower.rule->match.dissector = &f->mask->dissector;
450 cls_flower.rule->match.mask = &f->mask->key;
451 cls_flower.rule->match.key = &f->mkey;
384c181e 452 cls_flower.classid = f->res.classid;
5b33f488 453
b15e7a6e 454 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
3a7b6861
PNA		 455 if (err) {
456 kfree(cls_flower.rule);
918190f5 457 if (skip_sw) {
1f15bb4f 458 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
918190f5
VB		 459 return err;
460 }
461 return 0;
3a7b6861
PNA		 462 }
463
40119211 464 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
918190f5 465 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
5a6ff4b1 466 tc_cleanup_flow_action(&cls_flower.rule->action);
8f256622
PNA		 467 kfree(cls_flower.rule);
468
40119211 469 if (err) {
918190f5
VB		 470 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
471 return err;
717503b9
JP		 472 }
473
918190f5
VB		 474 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
475 return -EINVAL;
c24e43d8 476
918190f5 477 return 0;
5b33f488
AV		 478}
479
c24e43d8
VB		 480static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
481 bool rtnl_held)
10cbc684 482{
208c0f4b 483 struct tcf_block *block = tp->chain->block;
f9e30088 484 struct flow_cls_offload cls_flower = {};
10cbc684 485
d6787147 486 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
f9e30088 487 cls_flower.command = FLOW_CLS_STATS;
de4784ca 488 cls_flower.cookie = (unsigned long) f;
384c181e 489 cls_flower.classid = f->res.classid;
10cbc684 490
918190f5
VB		 491 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
492 rtnl_held);
3b1903ef
PNA		 493
494 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
495 cls_flower.stats.pkts,
4b61d3e8 496 cls_flower.stats.drops,
93a129eb
JP		 497 cls_flower.stats.lastused,
498 cls_flower.stats.used_hw_stats,
499 cls_flower.stats.used_hw_stats_valid);
10cbc684
AV		 500}
501
06177558
VB		 502static void __fl_put(struct cls_fl_filter *f)
503{
504 if (!refcount_dec_and_test(&f->refcnt))
505 return;
506
507 if (tcf_exts_get_net(&f->exts))
508 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
509 else
510 __fl_destroy_filter(f);
511}
512
513static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
514{
515 struct cls_fl_filter *f;
516
517 rcu_read_lock();
518 f = idr_find(&head->handle_idr, handle);
519 if (f && !refcount_inc_not_zero(&f->refcnt))
520 f = NULL;
521 rcu_read_unlock();
522
523 return f;
524}
525
b2552b8c 526static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8
VB		 527 bool *last, bool rtnl_held,
528 struct netlink_ext_ack *extack)
13fa876e 529{
e474619a 530 struct cls_fl_head *head = fl_head_dereference(tp);
c15ab236 531
b2552b8c
VB		 532 *last = false;
533
3d81e711
VB		 534 spin_lock(&tp->lock);
535 if (f->deleted) {
536 spin_unlock(&tp->lock);
b2552b8c 537 return -ENOENT;
3d81e711 538 }
b2552b8c
VB		 539
540 f->deleted = true;
541 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
542 f->mask->filter_ht_params);
9c160941 543 idr_remove(&head->handle_idr, f->handle);
13fa876e 544 list_del_rcu(&f->list);
3d81e711
VB		 545 spin_unlock(&tp->lock);
546
9994677c 547 *last = fl_mask_put(head, f->mask);
79685219 548 if (!tc_skip_hw(f->flags))
c24e43d8 549 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
13fa876e 550 tcf_unbind_filter(tp, &f->res);
06177558 551 __fl_put(f);
05cd271f 552
b2552b8c 553 return 0;
13fa876e
RD		 554}
555
d9363774
DB		 556static void fl_destroy_sleepable(struct work_struct *work)
557{
aaa908ff
CW		 558 struct cls_fl_head *head = container_of(to_rcu_work(work),
559 struct cls_fl_head,
560 rwork);
de9dc650
PB		 561
562 rhashtable_destroy(&head->ht);
d9363774
DB		 563 kfree(head);
564 module_put(THIS_MODULE);
565}
566
12db03b6
VB		 567static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
568 struct netlink_ext_ack *extack)
77b9900e 569{
e474619a 570 struct cls_fl_head *head = fl_head_dereference(tp);
05cd271f 571 struct fl_flow_mask *mask, *next_mask;
77b9900e 572 struct cls_fl_filter *f, *next;
b2552b8c 573 bool last;
77b9900e 574
05cd271f
PB		 575 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
576 list_for_each_entry_safe(f, next, &mask->filters, list) {
c24e43d8 577 __fl_delete(tp, f, &last, rtnl_held, extack);
b2552b8c 578 if (last)
05cd271f
PB		 579 break;
580 }
581 }
c15ab236 582 idr_destroy(&head->handle_idr);
d9363774
DB		 583
584 __module_get(THIS_MODULE);
aaa908ff 585 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
77b9900e
JP		 586}
587
06177558
VB		 588static void fl_put(struct tcf_proto *tp, void *arg)
589{
590 struct cls_fl_filter *f = arg;
591
592 __fl_put(f);
593}
594
8113c095 595static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e 596{
e474619a 597 struct cls_fl_head *head = fl_head_dereference(tp);
77b9900e 598
06177558 599 return __fl_get(head, handle);
77b9900e
JP		 600}
601
602static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
603 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
604 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
605 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
606 .len = IFNAMSIZ },
607 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
608 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
609 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
610 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
611 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
612 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
613 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
614 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
615 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
616 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
617 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
618 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
619 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
620 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
621 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
622 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 623 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
624 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 625 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
626 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
627 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 628 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
629 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
630 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
631 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
632 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
633 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
634 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
635 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
636 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 637 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
638 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
639 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
640 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 641 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
642 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
643 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
644 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 645 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
646 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
647 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
648 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 649 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
650 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 651 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
652 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
653 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
654 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
655 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
656 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
657 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
658 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 659 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
660 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
661 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
662 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
663 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
666 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
667 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
668 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 669 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
671 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
672 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
61aec25a 673 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
fdfc7dd6
JP		 674 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
675 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 676 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
678 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
679 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
d64efd09
JL		 680 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
681 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
0e2c17b6
OG		 683 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
684 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
685 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
686 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
0a6e7778
PJV		 687 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
688 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
e0ace68a
PB		 689 [TCA_FLOWER_KEY_CT_STATE] = { .type = NLA_U16 },
690 [TCA_FLOWER_KEY_CT_STATE_MASK] = { .type = NLA_U16 },
691 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
692 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
693 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
694 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
695 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
696 .len = 128 / BITS_PER_BYTE },
697 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
698 .len = 128 / BITS_PER_BYTE },
e2debf08 699 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
5923b8f7
AL		 700 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
701 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
702
0a6e7778
PJV		 703};
704
705static const struct nla_policy
706enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
d8f9dfae
XL		 707 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
708 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
0a6e7778 709 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
d8f9dfae 710 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
79b1011c 711 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
0a6e7778
PJV		 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
d8f9dfae
XL		 722static const struct nla_policy
723vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
724 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
725};
726
79b1011c
XL		 727static const struct nla_policy
728erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
729 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
730 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
731 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
732 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
733};
734
61aec25a
GN		 735static const struct nla_policy
736mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
737 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
738 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
739 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
740 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
741 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
742};
743
77b9900e
JP		 744static void fl_set_key_val(struct nlattr **tb,
745 void *val, int val_type,
746 void *mask, int mask_type, int len)
747{
748 if (!tb[val_type])
749 return;
e0ace68a 750 nla_memcpy(val, tb[val_type], len);
77b9900e
JP		 751 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
752 memset(mask, 0xff, len);
753 else
e0ace68a 754 nla_memcpy(mask, tb[mask_type], len);
77b9900e
JP		 755}
756
5c72299f 757static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
bd7d4c12
GN		 758 struct fl_flow_key *mask,
759 struct netlink_ext_ack *extack)
5c72299f 760{
8ffb055b
YK		 761 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
762 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
763 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
764 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
765 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
766 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
767 fl_set_key_val(tb, &key->tp_range.tp_min.src,
768 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
769 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
770 fl_set_key_val(tb, &key->tp_range.tp_max.src,
771 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
772 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
773
bd7d4c12
GN		 774 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
775 htons(key->tp_range.tp_max.dst) <=
776 htons(key->tp_range.tp_min.dst)) {
777 NL_SET_ERR_MSG_ATTR(extack,
778 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
779 "Invalid destination port range (min must be strictly smaller than max)");
5c72299f 780 return -EINVAL;
bd7d4c12
GN		 781 }
782 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
783 htons(key->tp_range.tp_max.src) <=
784 htons(key->tp_range.tp_min.src)) {
785 NL_SET_ERR_MSG_ATTR(extack,
786 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
787 "Invalid source port range (min must be strictly smaller than max)");
788 return -EINVAL;
789 }
5c72299f
AN		 790
791 return 0;
792}
793
61aec25a
GN		 794static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
795 struct flow_dissector_key_mpls *key_val,
796 struct flow_dissector_key_mpls *key_mask,
797 struct netlink_ext_ack *extack)
798{
799 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
800 struct flow_dissector_mpls_lse *lse_mask;
801 struct flow_dissector_mpls_lse *lse_val;
802 u8 lse_index;
803 u8 depth;
804 int err;
805
806 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
807 mpls_stack_entry_policy, extack);
808 if (err < 0)
809 return err;
810
811 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
812 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
813 return -EINVAL;
814 }
815
816 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
817
818 /* LSE depth starts at 1, for consistency with terminology used by
819 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
820 */
821 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
822 NL_SET_ERR_MSG_ATTR(extack,
823 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
824 "Invalid MPLS depth");
825 return -EINVAL;
826 }
827 lse_index = depth - 1;
828
829 dissector_set_mpls_lse(key_val, lse_index);
830 dissector_set_mpls_lse(key_mask, lse_index);
831
832 lse_val = &key_val->ls[lse_index];
833 lse_mask = &key_mask->ls[lse_index];
834
835 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
836 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
837 lse_mask->mpls_ttl = MPLS_TTL_MASK;
838 }
839 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
840 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
841
842 if (bos & ~MPLS_BOS_MASK) {
843 NL_SET_ERR_MSG_ATTR(extack,
844 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
845 "Bottom Of Stack (BOS) must be 0 or 1");
846 return -EINVAL;
847 }
848 lse_val->mpls_bos = bos;
849 lse_mask->mpls_bos = MPLS_BOS_MASK;
850 }
851 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
852 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
853
854 if (tc & ~MPLS_TC_MASK) {
855 NL_SET_ERR_MSG_ATTR(extack,
856 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
857 "Traffic Class (TC) must be between 0 and 7");
858 return -EINVAL;
859 }
860 lse_val->mpls_tc = tc;
861 lse_mask->mpls_tc = MPLS_TC_MASK;
862 }
863 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
864 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
865
866 if (label & ~MPLS_LABEL_MASK) {
867 NL_SET_ERR_MSG_ATTR(extack,
868 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
869 "Label must be between 0 and 1048575");
870 return -EINVAL;
871 }
872 lse_val->mpls_label = label;
873 lse_mask->mpls_label = MPLS_LABEL_MASK;
874 }
875
876 return 0;
877}
878
879static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
880 struct flow_dissector_key_mpls *key_val,
881 struct flow_dissector_key_mpls *key_mask,
882 struct netlink_ext_ack *extack)
883{
884 struct nlattr *nla_lse;
885 int rem;
886 int err;
887
888 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
889 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
890 "NLA_F_NESTED is missing");
891 return -EINVAL;
892 }
893
894 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
895 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
896 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
897 "Invalid MPLS option type");
898 return -EINVAL;
899 }
900
901 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
902 if (err < 0)
903 return err;
904 }
905 if (rem) {
906 NL_SET_ERR_MSG(extack,
907 "Bytes leftover after parsing MPLS options");
908 return -EINVAL;
909 }
910
911 return 0;
912}
913
1a7fca63
BL		 914static int fl_set_key_mpls(struct nlattr **tb,
915 struct flow_dissector_key_mpls *key_val,
442f730e
GN		 916 struct flow_dissector_key_mpls *key_mask,
917 struct netlink_ext_ack *extack)
a577d8f7 918{
58cff782
GN		 919 struct flow_dissector_mpls_lse *lse_mask;
920 struct flow_dissector_mpls_lse *lse_val;
921
61aec25a
GN		 922 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
923 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
924 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
925 tb[TCA_FLOWER_KEY_MPLS_TC] ||
926 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
927 NL_SET_ERR_MSG_ATTR(extack,
928 tb[TCA_FLOWER_KEY_MPLS_OPTS],
929 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
930 return -EBADMSG;
931 }
932
933 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
934 key_val, key_mask, extack);
935 }
936
58cff782
GN		 937 lse_val = &key_val->ls[0];
938 lse_mask = &key_mask->ls[0];
939
a577d8f7 940 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
58cff782
GN		 941 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
942 lse_mask->mpls_ttl = MPLS_TTL_MASK;
943 dissector_set_mpls_lse(key_val, 0);
944 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 945 }
946 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 947 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
948
442f730e
GN		 949 if (bos & ~MPLS_BOS_MASK) {
950 NL_SET_ERR_MSG_ATTR(extack,
951 tb[TCA_FLOWER_KEY_MPLS_BOS],
952 "Bottom Of Stack (BOS) must be 0 or 1");
1a7fca63 953 return -EINVAL;
442f730e 954 }
58cff782
GN		 955 lse_val->mpls_bos = bos;
956 lse_mask->mpls_bos = MPLS_BOS_MASK;
957 dissector_set_mpls_lse(key_val, 0);
958 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 959 }
960 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 961 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
962
442f730e
GN		 963 if (tc & ~MPLS_TC_MASK) {
964 NL_SET_ERR_MSG_ATTR(extack,
965 tb[TCA_FLOWER_KEY_MPLS_TC],
966 "Traffic Class (TC) must be between 0 and 7");
1a7fca63 967 return -EINVAL;
442f730e 968 }
58cff782
GN		 969 lse_val->mpls_tc = tc;
970 lse_mask->mpls_tc = MPLS_TC_MASK;
971 dissector_set_mpls_lse(key_val, 0);
972 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 973 }
974 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 975 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
976
442f730e
GN		 977 if (label & ~MPLS_LABEL_MASK) {
978 NL_SET_ERR_MSG_ATTR(extack,
979 tb[TCA_FLOWER_KEY_MPLS_LABEL],
980 "Label must be between 0 and 1048575");
1a7fca63 981 return -EINVAL;
442f730e 982 }
58cff782
GN		 983 lse_val->mpls_label = label;
984 lse_mask->mpls_label = MPLS_LABEL_MASK;
985 dissector_set_mpls_lse(key_val, 0);
986 dissector_set_mpls_lse(key_mask, 0);
a577d8f7 987 }
1a7fca63 988 return 0;
a577d8f7
BL		 989}
990
9399ae9a 991static void fl_set_key_vlan(struct nlattr **tb,
aaab0834 992 __be16 ethertype,
d64efd09 993 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 994 struct flow_dissector_key_vlan *key_val,
995 struct flow_dissector_key_vlan *key_mask)
996{
997#define VLAN_PRIORITY_MASK 0x7
998
d64efd09 999 if (tb[vlan_id_key]) {
9399ae9a 1000 key_val->vlan_id =
d64efd09 1001 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
9399ae9a
HHZ		 1002 key_mask->vlan_id = VLAN_VID_MASK;
1003 }
d64efd09 1004 if (tb[vlan_prio_key]) {
9399ae9a 1005 key_val->vlan_priority =
d64efd09 1006 nla_get_u8(tb[vlan_prio_key]) &
9399ae9a
HHZ		 1007 VLAN_PRIORITY_MASK;
1008 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1009 }
aaab0834
JL		 1010 key_val->vlan_tpid = ethertype;
1011 key_mask->vlan_tpid = cpu_to_be16(~0);
9399ae9a
HHZ		 1012}
1013
faa3ffce
OG		 1014static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1015 u32 *dissector_key, u32 *dissector_mask,
1016 u32 flower_flag_bit, u32 dissector_flag_bit)
1017{
1018 if (flower_mask & flower_flag_bit) {
1019 *dissector_mask |= dissector_flag_bit;
1020 if (flower_key & flower_flag_bit)
1021 *dissector_key |= dissector_flag_bit;
1022 }
1023}
1024
e304e21a
GN		 1025static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1026 u32 *flags_mask, struct netlink_ext_ack *extack)
faa3ffce
OG		 1027{
1028 u32 key, mask;
1029
d9724772 1030 /* mask is mandatory for flags */
e304e21a
GN		 1031 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1032 NL_SET_ERR_MSG(extack, "Missing flags mask");
d9724772 1033 return -EINVAL;
e304e21a 1034 }
faa3ffce
OG		 1035
1036 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 1037 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 1038
1039 *flags_key = 0;
1040 *flags_mask = 0;
1041
1042 fl_set_key_flag(key, mask, flags_key, flags_mask,
1043 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 1044 fl_set_key_flag(key, mask, flags_key, flags_mask,
1045 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1046 FLOW_DIS_FIRST_FRAG);
d9724772
OG		 1047
1048 return 0;
faa3ffce
OG		 1049}
1050
0e2c17b6 1051static void fl_set_key_ip(struct nlattr **tb, bool encap,
4d80cc0a
OG		 1052 struct flow_dissector_key_ip *key,
1053 struct flow_dissector_key_ip *mask)
1054{
0e2c17b6
OG		 1055 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1056 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1057 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1058 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
4d80cc0a 1059
0e2c17b6
OG		 1060 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1061 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
4d80cc0a
OG		 1062}
1063
0a6e7778
PJV		 1064static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1065 int depth, int option_len,
1066 struct netlink_ext_ack *extack)
1067{
1068 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1069 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1070 struct geneve_opt *opt;
1071 int err, data_len = 0;
1072
1073 if (option_len > sizeof(struct geneve_opt))
1074 data_len = option_len - sizeof(struct geneve_opt);
1075
1076 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1077 memset(opt, 0xff, option_len);
1078 opt->length = data_len / 4;
1079 opt->r1 = 0;
1080 opt->r2 = 0;
1081 opt->r3 = 0;
1082
1083 /* If no mask has been prodived we assume an exact match. */
1084 if (!depth)
1085 return sizeof(struct geneve_opt) + data_len;
1086
1087 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1088 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1089 return -EINVAL;
1090 }
1091
8cb08174
JB		 1092 err = nla_parse_nested_deprecated(tb,
1093 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1094 nla, geneve_opt_policy, extack);
0a6e7778
PJV		 1095 if (err < 0)
1096 return err;
1097
1098 /* We are not allowed to omit any of CLASS, TYPE or DATA
1099 * fields from the key.
1100 */
1101 if (!option_len &&
1102 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1103 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1104 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1105 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1106 return -EINVAL;
1107 }
1108
1109 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1110 * for the mask.
1111 */
1112 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1113 int new_len = key->enc_opts.len;
1114
1115 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1116 data_len = nla_len(data);
1117 if (data_len < 4) {
1118 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1119 return -ERANGE;
1120 }
1121 if (data_len % 4) {
1122 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1123 return -ERANGE;
1124 }
1125
1126 new_len += sizeof(struct geneve_opt) + data_len;
1127 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1128 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1129 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1130 return -ERANGE;
1131 }
1132 opt->length = data_len / 4;
1133 memcpy(opt->opt_data, nla_data(data), data_len);
1134 }
1135
1136 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1137 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1138 opt->opt_class = nla_get_be16(class);
1139 }
1140
1141 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1142 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1143 opt->type = nla_get_u8(type);
1144 }
1145
1146 return sizeof(struct geneve_opt) + data_len;
1147}
1148
d8f9dfae
XL		 1149static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1150 int depth, int option_len,
1151 struct netlink_ext_ack *extack)
1152{
1153 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1154 struct vxlan_metadata *md;
1155 int err;
1156
1157 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1158 memset(md, 0xff, sizeof(*md));
1159
1160 if (!depth)
1161 return sizeof(*md);
1162
1163 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1164 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1165 return -EINVAL;
1166 }
1167
1168 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1169 vxlan_opt_policy, extack);
1170 if (err < 0)
1171 return err;
1172
1173 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1174 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1175 return -EINVAL;
1176 }
1177
13e6ce98 1178 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
d8f9dfae 1179 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
13e6ce98
XL		 1180 md->gbp &= VXLAN_GBP_MASK;
1181 }
d8f9dfae
XL		 1182
1183 return sizeof(*md);
1184}
1185
79b1011c
XL		 1186static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1187 int depth, int option_len,
1188 struct netlink_ext_ack *extack)
1189{
1190 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1191 struct erspan_metadata *md;
1192 int err;
1193
1194 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1195 memset(md, 0xff, sizeof(*md));
1196 md->version = 1;
1197
1198 if (!depth)
1199 return sizeof(*md);
1200
1201 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1202 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1203 return -EINVAL;
1204 }
1205
1206 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1207 erspan_opt_policy, extack);
1208 if (err < 0)
1209 return err;
1210
1211 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1212 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1213 return -EINVAL;
1214 }
1215
1216 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1217 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1218
1219 if (md->version == 1) {
1220 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1221 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1222 return -EINVAL;
1223 }
1224 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1225 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
8e1b3ac4 1226 memset(&md->u, 0x00, sizeof(md->u));
79b1011c
XL		 1227 md->u.index = nla_get_be32(nla);
1228 }
1229 } else if (md->version == 2) {
1230 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1231 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1232 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1233 return -EINVAL;
1234 }
1235 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1236 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1237 md->u.md2.dir = nla_get_u8(nla);
1238 }
1239 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1240 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1241 set_hwid(&md->u.md2, nla_get_u8(nla));
1242 }
1243 } else {
1244 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1245 return -EINVAL;
1246 }
1247
1248 return sizeof(*md);
1249}
1250
0a6e7778
PJV		 1251static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1252 struct fl_flow_key *mask,
1253 struct netlink_ext_ack *extack)
1254{
1255 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
63c82997
JK		 1256 int err, option_len, key_depth, msk_depth = 0;
1257
8cb08174
JB		 1258 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1259 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1260 enc_opts_policy, extack);
63c82997
JK		 1261 if (err)
1262 return err;
0a6e7778
PJV		 1263
1264 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1265
1266 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
8cb08174
JB		 1267 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1268 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1269 enc_opts_policy, extack);
63c82997
JK		 1270 if (err)
1271 return err;
1272
0a6e7778
PJV		 1273 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1274 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
c96adff9
CW		 1275 if (!nla_ok(nla_opt_msk, msk_depth)) {
1276 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1277 return -EINVAL;
1278 }
0a6e7778
PJV		 1279 }
1280
1281 nla_for_each_attr(nla_opt_key, nla_enc_key,
1282 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1283 switch (nla_type(nla_opt_key)) {
1284 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
d8f9dfae
XL		 1285 if (key->enc_opts.dst_opt_type &&
1286 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1287 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1288 return -EINVAL;
1289 }
0a6e7778
PJV		 1290 option_len = 0;
1291 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1292 option_len = fl_set_geneve_opt(nla_opt_key, key,
1293 key_depth, option_len,
1294 extack);
1295 if (option_len < 0)
1296 return option_len;
1297
1298 key->enc_opts.len += option_len;
1299 /* At the same time we need to parse through the mask
1300 * in order to verify exact and mask attribute lengths.
1301 */
1302 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1303 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1304 msk_depth, option_len,
1305 extack);
1306 if (option_len < 0)
1307 return option_len;
1308
1309 mask->enc_opts.len += option_len;
1310 if (key->enc_opts.len != mask->enc_opts.len) {
1311 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1312 return -EINVAL;
1313 }
d8f9dfae
XL		 1314 break;
1315 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1316 if (key->enc_opts.dst_opt_type) {
1317 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1318 return -EINVAL;
1319 }
1320 option_len = 0;
1321 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1322 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1323 key_depth, option_len,
1324 extack);
1325 if (option_len < 0)
1326 return option_len;
1327
1328 key->enc_opts.len += option_len;
1329 /* At the same time we need to parse through the mask
1330 * in order to verify exact and mask attribute lengths.
1331 */
1332 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1333 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1334 msk_depth, option_len,
1335 extack);
1336 if (option_len < 0)
1337 return option_len;
1338
1339 mask->enc_opts.len += option_len;
1340 if (key->enc_opts.len != mask->enc_opts.len) {
1341 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1342 return -EINVAL;
1343 }
79b1011c
XL		 1344 break;
1345 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1346 if (key->enc_opts.dst_opt_type) {
1347 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1348 return -EINVAL;
1349 }
1350 option_len = 0;
1351 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1352 option_len = fl_set_erspan_opt(nla_opt_key, key,
1353 key_depth, option_len,
1354 extack);
1355 if (option_len < 0)
1356 return option_len;
1357
1358 key->enc_opts.len += option_len;
1359 /* At the same time we need to parse through the mask
1360 * in order to verify exact and mask attribute lengths.
1361 */
1362 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1363 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1364 msk_depth, option_len,
1365 extack);
1366 if (option_len < 0)
1367 return option_len;
1368
1369 mask->enc_opts.len += option_len;
1370 if (key->enc_opts.len != mask->enc_opts.len) {
1371 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1372 return -EINVAL;
1373 }
0a6e7778
PJV		 1374 break;
1375 default:
1376 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1377 return -EINVAL;
1378 }
c96adff9
CW		 1379
1380 if (!msk_depth)
1381 continue;
1382
1383 if (!nla_ok(nla_opt_msk, msk_depth)) {
1384 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1385 return -EINVAL;
1386 }
1387 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
0a6e7778
PJV		 1388 }
1389
1390 return 0;
1391}
1392
e0ace68a
PB		 1393static int fl_set_key_ct(struct nlattr **tb,
1394 struct flow_dissector_key_ct *key,
1395 struct flow_dissector_key_ct *mask,
1396 struct netlink_ext_ack *extack)
1397{
1398 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1399 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1400 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1401 return -EOPNOTSUPP;
1402 }
1403 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1404 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1405 sizeof(key->ct_state));
1406 }
1407 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1408 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1409 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1410 return -EOPNOTSUPP;
1411 }
1412 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1413 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1414 sizeof(key->ct_zone));
1415 }
1416 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1417 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1418 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1419 return -EOPNOTSUPP;
1420 }
1421 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1422 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1423 sizeof(key->ct_mark));
1424 }
1425 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1426 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1427 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1428 return -EOPNOTSUPP;
1429 }
1430 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1431 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1432 sizeof(key->ct_labels));
1433 }
1434
1435 return 0;
1436}
1437
77b9900e 1438static int fl_set_key(struct net *net, struct nlattr **tb,
1057c55f
AA		 1439 struct fl_flow_key *key, struct fl_flow_key *mask,
1440 struct netlink_ext_ack *extack)
77b9900e 1441{
9399ae9a 1442 __be16 ethertype;
d9724772 1443 int ret = 0;
a5148626 1444
77b9900e 1445 if (tb[TCA_FLOWER_INDEV]) {
1057c55f 1446 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
77b9900e
JP		 1447 if (err < 0)
1448 return err;
8212ed77
JP		 1449 key->meta.ingress_ifindex = err;
1450 mask->meta.ingress_ifindex = 0xffffffff;
77b9900e
JP		 1451 }
1452
1453 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1454 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1455 sizeof(key->eth.dst));
1456 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1457 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1458 sizeof(key->eth.src));
66530bdf 1459
0b498a52 1460 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 1461 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1462
aaab0834 1463 if (eth_type_vlan(ethertype)) {
d64efd09
JL		 1464 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1465 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1466 &mask->vlan);
1467
5e9a0fe4
JL		 1468 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1469 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1470 if (eth_type_vlan(ethertype)) {
1471 fl_set_key_vlan(tb, ethertype,
1472 TCA_FLOWER_KEY_CVLAN_ID,
1473 TCA_FLOWER_KEY_CVLAN_PRIO,
1474 &key->cvlan, &mask->cvlan);
1475 fl_set_key_val(tb, &key->basic.n_proto,
1476 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1477 &mask->basic.n_proto,
1478 TCA_FLOWER_UNSPEC,
1479 sizeof(key->basic.n_proto));
1480 } else {
1481 key->basic.n_proto = ethertype;
1482 mask->basic.n_proto = cpu_to_be16(~0);
1483 }
d64efd09 1484 }
0b498a52
AB		 1485 } else {
1486 key->basic.n_proto = ethertype;
1487 mask->basic.n_proto = cpu_to_be16(~0);
1488 }
9399ae9a 1489 }
66530bdf 1490
77b9900e
JP		 1491 if (key->basic.n_proto == htons(ETH_P_IP) ||
1492 key->basic.n_proto == htons(ETH_P_IPV6)) {
1493 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1494 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1495 sizeof(key->basic.ip_proto));
0e2c17b6 1496 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
77b9900e 1497 }
66530bdf
JHS		 1498
1499 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1500 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1501 mask->control.addr_type = ~0;
77b9900e
JP		 1502 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1503 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1504 sizeof(key->ipv4.src));
1505 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1506 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1507 sizeof(key->ipv4.dst));
66530bdf
JHS		 1508 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1509 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1510 mask->control.addr_type = ~0;
77b9900e
JP		 1511 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1512 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1513 sizeof(key->ipv6.src));
1514 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1515 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1516 sizeof(key->ipv6.dst));
1517 }
66530bdf 1518
77b9900e
JP		 1519 if (key->basic.ip_proto == IPPROTO_TCP) {
1520 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1521 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1522 sizeof(key->tp.src));
1523 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1524 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 1525 sizeof(key->tp.dst));
fdfc7dd6
JP		 1526 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1527 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1528 sizeof(key->tcp.flags));
77b9900e
JP		 1529 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1530 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1531 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1532 sizeof(key->tp.src));
1533 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1534 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 1535 sizeof(key->tp.dst));
5976c5f4
SH		 1536 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1537 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1538 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1539 sizeof(key->tp.src));
1540 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1541 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1542 sizeof(key->tp.dst));
7b684884
SH		 1543 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1544 key->basic.ip_proto == IPPROTO_ICMP) {
1545 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1546 &mask->icmp.type,
1547 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1548 sizeof(key->icmp.type));
1549 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1550 &mask->icmp.code,
1551 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1552 sizeof(key->icmp.code));
1553 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1554 key->basic.ip_proto == IPPROTO_ICMPV6) {
1555 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1556 &mask->icmp.type,
1557 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1558 sizeof(key->icmp.type));
040587af 1559 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 1560 &mask->icmp.code,
040587af 1561 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 1562 sizeof(key->icmp.code));
a577d8f7
BL		 1563 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1564 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
442f730e 1565 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1a7fca63
BL		 1566 if (ret)
1567 return ret;
99d31326
SH		 1568 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1569 key->basic.n_proto == htons(ETH_P_RARP)) {
1570 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1571 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1572 sizeof(key->arp.sip));
1573 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1574 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1575 sizeof(key->arp.tip));
1576 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1577 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1578 sizeof(key->arp.op));
1579 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1580 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1581 sizeof(key->arp.sha));
1582 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1583 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1584 sizeof(key->arp.tha));
77b9900e
JP		 1585 }
1586
5c72299f
AN		 1587 if (key->basic.ip_proto == IPPROTO_TCP ||
1588 key->basic.ip_proto == IPPROTO_UDP ||
1589 key->basic.ip_proto == IPPROTO_SCTP) {
bd7d4c12 1590 ret = fl_set_key_port_range(tb, key, mask, extack);
5c72299f
AN		 1591 if (ret)
1592 return ret;
1593 }
1594
bc3103f1
AV		 1595 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1596 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1597 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1598 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1599 fl_set_key_val(tb, &key->enc_ipv4.src,
1600 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1601 &mask->enc_ipv4.src,
1602 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1603 sizeof(key->enc_ipv4.src));
1604 fl_set_key_val(tb, &key->enc_ipv4.dst,
1605 TCA_FLOWER_KEY_ENC_IPV4_DST,
1606 &mask->enc_ipv4.dst,
1607 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1608 sizeof(key->enc_ipv4.dst));
1609 }
1610
1611 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1612 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1613 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1614 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1615 fl_set_key_val(tb, &key->enc_ipv6.src,
1616 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1617 &mask->enc_ipv6.src,
1618 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1619 sizeof(key->enc_ipv6.src));
1620 fl_set_key_val(tb, &key->enc_ipv6.dst,
1621 TCA_FLOWER_KEY_ENC_IPV6_DST,
1622 &mask->enc_ipv6.dst,
1623 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1624 sizeof(key->enc_ipv6.dst));
1625 }
1626
1627 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1628 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 1629 sizeof(key->enc_key_id.keyid));
1630
f4d997fd
HHZ		 1631 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1632 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1633 sizeof(key->enc_tp.src));
1634
1635 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1636 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1637 sizeof(key->enc_tp.dst));
1638
0e2c17b6
OG		 1639 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1640
5923b8f7
AL		 1641 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1642 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1643 sizeof(key->hash.hash));
1644
0a6e7778
PJV		 1645 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1646 ret = fl_set_enc_opt(tb, key, mask, extack);
1647 if (ret)
1648 return ret;
1649 }
1650
e0ace68a
PB		 1651 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1652 if (ret)
1653 return ret;
1654
d9724772 1655 if (tb[TCA_FLOWER_KEY_FLAGS])
e304e21a
GN		 1656 ret = fl_set_key_flags(tb, &key->control.flags,
1657 &mask->control.flags, extack);
faa3ffce 1658
d9724772 1659 return ret;
77b9900e
JP		 1660}
1661
05cd271f
PB		 1662static void fl_mask_copy(struct fl_flow_mask *dst,
1663 struct fl_flow_mask *src)
77b9900e 1664{
05cd271f
PB		 1665 const void *psrc = fl_key_get_start(&src->key, src);
1666 void *pdst = fl_key_get_start(&dst->key, src);
77b9900e 1667
05cd271f
PB		 1668 memcpy(pdst, psrc, fl_mask_range(src));
1669 dst->range = src->range;
77b9900e
JP		 1670}
1671
1672static const struct rhashtable_params fl_ht_params = {
1673 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1674 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1675 .automatic_shrinking = true,
1676};
1677
05cd271f 1678static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
77b9900e 1679{
05cd271f
PB		 1680 mask->filter_ht_params = fl_ht_params;
1681 mask->filter_ht_params.key_len = fl_mask_range(mask);
1682 mask->filter_ht_params.key_offset += mask->range.start;
77b9900e 1683
05cd271f 1684 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
77b9900e
JP		 1685}
1686
1687#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
c593642c 1688#define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
77b9900e 1689
339ba878
HHZ		 1690#define FL_KEY_IS_MASKED(mask, member) \
1691 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1692 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 1693
1694#define FL_KEY_SET(keys, cnt, id, member) \
1695 do { \
1696 keys[cnt].key_id = id; \
1697 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1698 cnt++; \
1699 } while(0);
1700
339ba878 1701#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 1702 do { \
339ba878 1703 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 1704 FL_KEY_SET(keys, cnt, id, member); \
1705 } while(0);
1706
33fb5cba
JP		 1707static void fl_init_dissector(struct flow_dissector *dissector,
1708 struct fl_flow_key *mask)
77b9900e
JP		 1709{
1710 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1711 size_t cnt = 0;
1712
8212ed77
JP		 1713 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1714 FLOW_DISSECTOR_KEY_META, meta);
42aecaa9 1715 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 1716 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
33fb5cba 1717 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1718 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
33fb5cba 1719 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1720 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
33fb5cba 1721 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1722 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
8ffb055b
YK		 1723 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1724 FLOW_DISSECTOR_KEY_PORTS, tp);
1725 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1726 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
33fb5cba 1727 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
4d80cc0a 1728 FLOW_DISSECTOR_KEY_IP, ip);
33fb5cba 1729 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
fdfc7dd6 1730 FLOW_DISSECTOR_KEY_TCP, tcp);
33fb5cba 1731 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
7b684884 1732 FLOW_DISSECTOR_KEY_ICMP, icmp);
33fb5cba 1733 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
99d31326 1734 FLOW_DISSECTOR_KEY_ARP, arp);
33fb5cba 1735 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
a577d8f7 1736 FLOW_DISSECTOR_KEY_MPLS, mpls);
33fb5cba 1737 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
9399ae9a 1738 FLOW_DISSECTOR_KEY_VLAN, vlan);
33fb5cba 1739 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
d64efd09 1740 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
33fb5cba 1741 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1742 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
33fb5cba 1743 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1744 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
33fb5cba 1745 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1746 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
33fb5cba
JP		 1747 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1748 FL_KEY_IS_MASKED(mask, enc_ipv6))
519d1052
HHZ		 1749 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1750 enc_control);
33fb5cba 1751 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
f4d997fd 1752 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
33fb5cba 1753 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
0e2c17b6 1754 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
0a6e7778
PJV		 1755 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1756 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
e0ace68a
PB		 1757 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1758 FLOW_DISSECTOR_KEY_CT, ct);
5923b8f7
AL		 1759 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1760 FLOW_DISSECTOR_KEY_HASH, hash);
77b9900e 1761
33fb5cba 1762 skb_flow_dissector_init(dissector, keys, cnt);
05cd271f
PB		 1763}
1764
1765static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1766 struct fl_flow_mask *mask)
1767{
1768 struct fl_flow_mask *newmask;
1769 int err;
1770
1771 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1772 if (!newmask)
1773 return ERR_PTR(-ENOMEM);
1774
1775 fl_mask_copy(newmask, mask);
1776
8ffb055b
YK		 1777 if ((newmask->key.tp_range.tp_min.dst &&
1778 newmask->key.tp_range.tp_max.dst) ||
1779 (newmask->key.tp_range.tp_min.src &&
1780 newmask->key.tp_range.tp_max.src))
5c72299f
AN		 1781 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1782
05cd271f
PB		 1783 err = fl_init_mask_hashtable(newmask);
1784 if (err)
1785 goto errout_free;
1786
33fb5cba 1787 fl_init_dissector(&newmask->dissector, &newmask->key);
05cd271f
PB		 1788
1789 INIT_LIST_HEAD_RCU(&newmask->filters);
1790
f48ef4d5 1791 refcount_set(&newmask->refcnt, 1);
195c234d
VB		 1792 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1793 &newmask->ht_node, mask_ht_params);
05cd271f
PB		 1794 if (err)
1795 goto errout_destroy;
1796
259e60f9 1797 spin_lock(&head->masks_lock);
05cd271f 1798 list_add_tail_rcu(&newmask->list, &head->masks);
259e60f9 1799 spin_unlock(&head->masks_lock);
05cd271f
PB		 1800
1801 return newmask;
1802
1803errout_destroy:
1804 rhashtable_destroy(&newmask->ht);
1805errout_free:
1806 kfree(newmask);
1807
1808 return ERR_PTR(err);
77b9900e
JP		 1809}
1810
1811static int fl_check_assign_mask(struct cls_fl_head *head,
05cd271f
PB		 1812 struct cls_fl_filter *fnew,
1813 struct cls_fl_filter *fold,
77b9900e
JP		 1814 struct fl_flow_mask *mask)
1815{
05cd271f 1816 struct fl_flow_mask *newmask;
f48ef4d5 1817 int ret = 0;
77b9900e 1818
f48ef4d5 1819 rcu_read_lock();
195c234d
VB		 1820
1821 /* Insert mask as temporary node to prevent concurrent creation of mask
1822 * with same key. Any concurrent lookups with same key will return
99815f50 1823 * -EAGAIN because mask's refcnt is zero.
195c234d
VB		 1824 */
1825 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1826 &mask->ht_node,
1827 mask_ht_params);
05cd271f 1828 if (!fnew->mask) {
f48ef4d5
VB		 1829 rcu_read_unlock();
1830
195c234d
VB		 1831 if (fold) {
1832 ret = -EINVAL;
1833 goto errout_cleanup;
1834 }
77b9900e 1835
05cd271f 1836 newmask = fl_create_new_mask(head, mask);
195c234d
VB		 1837 if (IS_ERR(newmask)) {
1838 ret = PTR_ERR(newmask);
1839 goto errout_cleanup;
1840 }
77b9900e 1841
05cd271f 1842 fnew->mask = newmask;
f48ef4d5 1843 return 0;
195c234d
VB		 1844 } else if (IS_ERR(fnew->mask)) {
1845 ret = PTR_ERR(fnew->mask);
f6521c58 1846 } else if (fold && fold->mask != fnew->mask) {
f48ef4d5
VB		 1847 ret = -EINVAL;
1848 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1849 /* Mask was deleted concurrently, try again */
1850 ret = -EAGAIN;
05cd271f 1851 }
f48ef4d5
VB		 1852 rcu_read_unlock();
1853 return ret;
195c234d
VB		 1854
1855errout_cleanup:
1856 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1857 mask_ht_params);
195c234d 1858 return ret;
77b9900e
JP		 1859}
1860
1861static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1862 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1863 unsigned long base, struct nlattr **tb,
50a56190 1864 struct nlattr *est, bool ovr,
c24e43d8 1865 struct fl_flow_tmplt *tmplt, bool rtnl_held,
50a56190 1866 struct netlink_ext_ack *extack)
77b9900e 1867{
77b9900e
JP		 1868 int err;
1869
c24e43d8 1870 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
ec6743a1 1871 extack);
77b9900e
JP		 1872 if (err < 0)
1873 return err;
1874
1875 if (tb[TCA_FLOWER_CLASSID]) {
1876 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
c24e43d8
VB		 1877 if (!rtnl_held)
1878 rtnl_lock();
77b9900e 1879 tcf_bind_filter(tp, &f->res, base);
c24e43d8
VB		 1880 if (!rtnl_held)
1881 rtnl_unlock();
77b9900e
JP		 1882 }
1883
1057c55f 1884 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
77b9900e 1885 if (err)
45507529 1886 return err;
77b9900e
JP		 1887
1888 fl_mask_update_range(mask);
1889 fl_set_masked_key(&f->mkey, &f->key, mask);
1890
b95ec7eb
JP		 1891 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1892 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1893 return -EINVAL;
1894 }
1895
77b9900e 1896 return 0;
77b9900e
JP		 1897}
1898
1f17f774
VB		 1899static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1900 struct cls_fl_filter *fold,
1901 bool *in_ht)
1902{
1903 struct fl_flow_mask *mask = fnew->mask;
1904 int err;
1905
9e35552a
VB		 1906 err = rhashtable_lookup_insert_fast(&mask->ht,
1907 &fnew->ht_node,
1908 mask->filter_ht_params);
1f17f774
VB		 1909 if (err) {
1910 *in_ht = false;
1911 /* It is okay if filter with same key exists when
1912 * overwriting.
1913 */
1914 return fold && err == -EEXIST ? 0 : err;
1915 }
1916
1917 *in_ht = true;
1918 return 0;
1919}
1920
77b9900e
JP		 1921static int fl_change(struct net *net, struct sk_buff *in_skb,
1922 struct tcf_proto *tp, unsigned long base,
1923 u32 handle, struct nlattr **tca,
12db03b6
VB		 1924 void **arg, bool ovr, bool rtnl_held,
1925 struct netlink_ext_ack *extack)
77b9900e 1926{
e474619a 1927 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 1928 struct cls_fl_filter *fold = *arg;
77b9900e 1929 struct cls_fl_filter *fnew;
2cddd201 1930 struct fl_flow_mask *mask;
39b7b6a6 1931 struct nlattr **tb;
1f17f774 1932 bool in_ht;
77b9900e
JP		 1933 int err;
1934
06177558
VB		 1935 if (!tca[TCA_OPTIONS]) {
1936 err = -EINVAL;
1937 goto errout_fold;
1938 }
77b9900e 1939
2cddd201 1940 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
06177558
VB		 1941 if (!mask) {
1942 err = -ENOBUFS;
1943 goto errout_fold;
1944 }
39b7b6a6 1945
2cddd201
IV		 1946 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1947 if (!tb) {
1948 err = -ENOBUFS;
1949 goto errout_mask_alloc;
1950 }
1951
8cb08174
JB		 1952 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1953 tca[TCA_OPTIONS], fl_policy, NULL);
77b9900e 1954 if (err < 0)
39b7b6a6 1955 goto errout_tb;
77b9900e 1956
39b7b6a6
AB		 1957 if (fold && handle && fold->handle != handle) {
1958 err = -EINVAL;
1959 goto errout_tb;
1960 }
77b9900e
JP		 1961
1962 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 1963 if (!fnew) {
1964 err = -ENOBUFS;
1965 goto errout_tb;
1966 }
c049d56e 1967 INIT_LIST_HEAD(&fnew->hw_list);
06177558 1968 refcount_set(&fnew->refcnt, 1);
77b9900e 1969
14215108 1970 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
b9a24bb7
WC		 1971 if (err < 0)
1972 goto errout;
77b9900e 1973
e69985c6
AV		 1974 if (tb[TCA_FLOWER_FLAGS]) {
1975 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1976
1977 if (!tc_flags_valid(fnew->flags)) {
1978 err = -EINVAL;
ecb3dea4 1979 goto errout;
e69985c6
AV		 1980 }
1981 }
5b33f488 1982
2cddd201 1983 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
c24e43d8 1984 tp->chain->tmplt_priv, rtnl_held, extack);
77b9900e 1985 if (err)
ecb3dea4 1986 goto errout;
77b9900e 1987
2cddd201 1988 err = fl_check_assign_mask(head, fnew, fold, mask);
77b9900e 1989 if (err)
ecb3dea4
VB		 1990 goto errout;
1991
1f17f774
VB		 1992 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1993 if (err)
1994 goto errout_mask;
1995
79685219 1996 if (!tc_skip_hw(fnew->flags)) {
c24e43d8 1997 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
79685219 1998 if (err)
1f17f774 1999 goto errout_ht;
79685219 2000 }
5b33f488 2001
55593960
OG		 2002 if (!tc_in_hw(fnew->flags))
2003 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2004
3d81e711
VB		 2005 spin_lock(&tp->lock);
2006
272ffaad
VB		 2007 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2008 * proto again or create new one, if necessary.
2009 */
2010 if (tp->deleting) {
2011 err = -EAGAIN;
2012 goto errout_hw;
2013 }
2014
5b33f488 2015 if (fold) {
b2552b8c
VB		 2016 /* Fold filter was deleted concurrently. Retry lookup. */
2017 if (fold->deleted) {
2018 err = -EAGAIN;
2019 goto errout_hw;
2020 }
2021
620da486
VB		 2022 fnew->handle = handle;
2023
1f17f774
VB		 2024 if (!in_ht) {
2025 struct rhashtable_params params =
2026 fnew->mask->filter_ht_params;
2027
2028 err = rhashtable_insert_fast(&fnew->mask->ht,
2029 &fnew->ht_node,
2030 params);
2031 if (err)
2032 goto errout_hw;
2033 in_ht = true;
2034 }
620da486 2035
c049d56e 2036 refcount_inc(&fnew->refcnt);
599d2570
RD		 2037 rhashtable_remove_fast(&fold->mask->ht,
2038 &fold->ht_node,
2039 fold->mask->filter_ht_params);
234a4624 2040 idr_replace(&head->handle_idr, fnew, fnew->handle);
ff3532f2 2041 list_replace_rcu(&fold->list, &fnew->list);
b2552b8c 2042 fold->deleted = true;
620da486 2043
3d81e711
VB		 2044 spin_unlock(&tp->lock);
2045
9994677c 2046 fl_mask_put(head, fold->mask);
620da486 2047 if (!tc_skip_hw(fold->flags))
c24e43d8 2048 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
77b9900e 2049 tcf_unbind_filter(tp, &fold->res);
06177558
VB		 2050 /* Caller holds reference to fold, so refcnt is always > 0
2051 * after this.
2052 */
2053 refcount_dec(&fold->refcnt);
2054 __fl_put(fold);
77b9900e 2055 } else {
620da486
VB		 2056 if (handle) {
2057 /* user specifies a handle and it doesn't exist */
2058 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2059 handle, GFP_ATOMIC);
9a2d9389
VB		 2060
2061 /* Filter with specified handle was concurrently
2062 * inserted after initial check in cls_api. This is not
2063 * necessarily an error if NLM_F_EXCL is not set in
2064 * message flags. Returning EAGAIN will cause cls_api to
2065 * try to update concurrently inserted rule.
2066 */
2067 if (err == -ENOSPC)
2068 err = -EAGAIN;
620da486
VB		 2069 } else {
2070 handle = 1;
2071 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2072 INT_MAX, GFP_ATOMIC);
2073 }
2074 if (err)
2075 goto errout_hw;
2076
c049d56e 2077 refcount_inc(&fnew->refcnt);
620da486 2078 fnew->handle = handle;
05cd271f 2079 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
3d81e711 2080 spin_unlock(&tp->lock);
77b9900e
JP		 2081 }
2082
620da486
VB		 2083 *arg = fnew;
2084
39b7b6a6 2085 kfree(tb);
99815f50 2086 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
77b9900e
JP		 2087 return 0;
2088
c049d56e
VB		 2089errout_ht:
2090 spin_lock(&tp->lock);
620da486 2091errout_hw:
c049d56e 2092 fnew->deleted = true;
3d81e711 2093 spin_unlock(&tp->lock);
620da486 2094 if (!tc_skip_hw(fnew->flags))
c24e43d8 2095 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1f17f774
VB		 2096 if (in_ht)
2097 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2098 fnew->mask->filter_ht_params);
ecb3dea4 2099errout_mask:
9994677c 2100 fl_mask_put(head, fnew->mask);
77b9900e 2101errout:
c049d56e 2102 __fl_put(fnew);
39b7b6a6
AB		 2103errout_tb:
2104 kfree(tb);
2cddd201 2105errout_mask_alloc:
99815f50 2106 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
06177558
VB		 2107errout_fold:
2108 if (fold)
2109 __fl_put(fold);
77b9900e
JP		 2110 return err;
2111}
2112
571acf21 2113static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
12db03b6 2114 bool rtnl_held, struct netlink_ext_ack *extack)
77b9900e 2115{
e474619a 2116 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 2117 struct cls_fl_filter *f = arg;
b2552b8c
VB		 2118 bool last_on_mask;
2119 int err = 0;
77b9900e 2120
c24e43d8 2121 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
05cd271f 2122 *last = list_empty(&head->masks);
06177558
VB		 2123 __fl_put(f);
2124
b2552b8c 2125 return err;
77b9900e
JP		 2126}
2127
12db03b6
VB		 2128static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2129 bool rtnl_held)
77b9900e 2130{
d39d7149
CW		 2131 struct cls_fl_head *head = fl_head_dereference(tp);
2132 unsigned long id = arg->cookie, tmp;
77b9900e 2133 struct cls_fl_filter *f;
05cd271f 2134
01683a14
VB		 2135 arg->count = arg->skip;
2136
d39d7149
CW		 2137 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2138 /* don't return filters that are being deleted */
2139 if (!refcount_inc_not_zero(&f->refcnt))
2140 continue;
01683a14 2141 if (arg->fn(tp, f, arg) < 0) {
06177558 2142 __fl_put(f);
01683a14
VB		 2143 arg->stop = 1;
2144 break;
05cd271f 2145 }
06177558 2146 __fl_put(f);
01683a14 2147 arg->count++;
77b9900e 2148 }
d39d7149 2149 arg->cookie = id;
77b9900e
JP		 2150}
2151
c049d56e
VB		 2152static struct cls_fl_filter *
2153fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2154{
2155 struct cls_fl_head *head = fl_head_dereference(tp);
2156
2157 spin_lock(&tp->lock);
2158 if (list_empty(&head->hw_filters)) {
2159 spin_unlock(&tp->lock);
2160 return NULL;
2161 }
2162
2163 if (!f)
2164 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2165 hw_list);
2166 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2167 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2168 spin_unlock(&tp->lock);
2169 return f;
2170 }
2171 }
2172
2173 spin_unlock(&tp->lock);
2174 return NULL;
2175}
2176
a7323311 2177static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
31533cba
JH		 2178 void *cb_priv, struct netlink_ext_ack *extack)
2179{
31533cba 2180 struct tcf_block *block = tp->chain->block;
f9e30088 2181 struct flow_cls_offload cls_flower = {};
c049d56e 2182 struct cls_fl_filter *f = NULL;
31533cba
JH		 2183 int err;
2184
c049d56e
VB		 2185 /* hw_filters list can only be changed by hw offload functions after
2186 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2187 * iterating it.
2188 */
2189 ASSERT_RTNL();
3a7b6861 2190
c049d56e 2191 while ((f = fl_get_next_hw_filter(tp, f, add))) {
95e27a4d
JH		 2192 cls_flower.rule =
2193 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2194 if (!cls_flower.rule) {
2195 __fl_put(f);
2196 return -ENOMEM;
2197 }
31533cba 2198
95e27a4d 2199 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
d6787147 2200 extack);
95e27a4d 2201 cls_flower.command = add ?
f9e30088 2202 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
95e27a4d
JH		 2203 cls_flower.cookie = (unsigned long)f;
2204 cls_flower.rule->match.dissector = &f->mask->dissector;
2205 cls_flower.rule->match.mask = &f->mask->key;
2206 cls_flower.rule->match.key = &f->mkey;
2207
b15e7a6e 2208 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
95e27a4d 2209 if (err) {
8f256622 2210 kfree(cls_flower.rule);
95e27a4d
JH		 2211 if (tc_skip_sw(f->flags)) {
2212 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
2213 __fl_put(f);
2214 return err;
31533cba 2215 }
95e27a4d
JH		 2216 goto next_flow;
2217 }
31533cba 2218
95e27a4d
JH		 2219 cls_flower.classid = f->res.classid;
2220
40119211
VB		 2221 err = tc_setup_cb_reoffload(block, tp, add, cb,
2222 TC_SETUP_CLSFLOWER, &cls_flower,
2223 cb_priv, &f->flags,
2224 &f->in_hw_count);
5a6ff4b1 2225 tc_cleanup_flow_action(&cls_flower.rule->action);
95e27a4d
JH		 2226 kfree(cls_flower.rule);
2227
2228 if (err) {
40119211
VB		 2229 __fl_put(f);
2230 return err;
31533cba 2231 }
95e27a4d 2232next_flow:
95e27a4d 2233 __fl_put(f);
31533cba
JH		 2234 }
2235
2236 return 0;
2237}
2238
a449a3e7
VB		 2239static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2240{
2241 struct flow_cls_offload *cls_flower = type_data;
2242 struct cls_fl_filter *f =
2243 (struct cls_fl_filter *) cls_flower->cookie;
2244 struct cls_fl_head *head = fl_head_dereference(tp);
2245
2246 spin_lock(&tp->lock);
2247 list_add(&f->hw_list, &head->hw_filters);
2248 spin_unlock(&tp->lock);
2249}
2250
2251static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2252{
2253 struct flow_cls_offload *cls_flower = type_data;
2254 struct cls_fl_filter *f =
2255 (struct cls_fl_filter *) cls_flower->cookie;
2256
2257 spin_lock(&tp->lock);
2258 if (!list_empty(&f->hw_list))
2259 list_del_init(&f->hw_list);
2260 spin_unlock(&tp->lock);
2261}
2262
8f256622
PNA		 2263static int fl_hw_create_tmplt(struct tcf_chain *chain,
2264 struct fl_flow_tmplt *tmplt)
34738452 2265{
f9e30088 2266 struct flow_cls_offload cls_flower = {};
34738452 2267 struct tcf_block *block = chain->block;
34738452 2268
e3ab786b 2269 cls_flower.rule = flow_rule_alloc(0);
8f256622
PNA		 2270 if (!cls_flower.rule)
2271 return -ENOMEM;
2272
34738452 2273 cls_flower.common.chain_index = chain->index;
f9e30088 2274 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
34738452 2275 cls_flower.cookie = (unsigned long) tmplt;
8f256622
PNA		 2276 cls_flower.rule->match.dissector = &tmplt->dissector;
2277 cls_flower.rule->match.mask = &tmplt->mask;
2278 cls_flower.rule->match.key = &tmplt->dummy_key;
34738452
JP		 2279
2280 /* We don't care if driver (any of them) fails to handle this
2281 * call. It serves just as a hint for it.
2282 */
40119211 2283 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
8f256622
PNA		 2284 kfree(cls_flower.rule);
2285
2286 return 0;
34738452
JP		 2287}
2288
2289static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2290 struct fl_flow_tmplt *tmplt)
2291{
f9e30088 2292 struct flow_cls_offload cls_flower = {};
34738452
JP		 2293 struct tcf_block *block = chain->block;
2294
2295 cls_flower.common.chain_index = chain->index;
f9e30088 2296 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
34738452
JP		 2297 cls_flower.cookie = (unsigned long) tmplt;
2298
40119211 2299 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
34738452
JP		 2300}
2301
b95ec7eb
JP		 2302static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2303 struct nlattr **tca,
2304 struct netlink_ext_ack *extack)
2305{
2306 struct fl_flow_tmplt *tmplt;
2307 struct nlattr **tb;
2308 int err;
2309
2310 if (!tca[TCA_OPTIONS])
2311 return ERR_PTR(-EINVAL);
2312
2313 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2314 if (!tb)
2315 return ERR_PTR(-ENOBUFS);
8cb08174
JB		 2316 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2317 tca[TCA_OPTIONS], fl_policy, NULL);
b95ec7eb
JP		 2318 if (err)
2319 goto errout_tb;
2320
2321 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1cbc36a5
DC		 2322 if (!tmplt) {
2323 err = -ENOMEM;
b95ec7eb 2324 goto errout_tb;
1cbc36a5 2325 }
b95ec7eb
JP		 2326 tmplt->chain = chain;
2327 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2328 if (err)
2329 goto errout_tmplt;
b95ec7eb
JP		 2330
2331 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2332
8f256622
PNA		 2333 err = fl_hw_create_tmplt(chain, tmplt);
2334 if (err)
2335 goto errout_tmplt;
34738452 2336
8f256622 2337 kfree(tb);
b95ec7eb
JP		 2338 return tmplt;
2339
2340errout_tmplt:
2341 kfree(tmplt);
2342errout_tb:
2343 kfree(tb);
2344 return ERR_PTR(err);
2345}
2346
ec3ed293
VB		 2347static void fl_tmplt_destroy(void *tmplt_priv)
2348{
2349 struct fl_flow_tmplt *tmplt = tmplt_priv;
2350
95278dda
CW		 2351 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2352 kfree(tmplt);
ec3ed293
VB		 2353}
2354
77b9900e
JP		 2355static int fl_dump_key_val(struct sk_buff *skb,
2356 void *val, int val_type,
2357 void *mask, int mask_type, int len)
2358{
2359 int err;
2360
2361 if (!memchr_inv(mask, 0, len))
2362 return 0;
2363 err = nla_put(skb, val_type, len, val);
2364 if (err)
2365 return err;
2366 if (mask_type != TCA_FLOWER_UNSPEC) {
2367 err = nla_put(skb, mask_type, len, mask);
2368 if (err)
2369 return err;
2370 }
2371 return 0;
2372}
2373
5c72299f
AN		 2374static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2375 struct fl_flow_key *mask)
2376{
8ffb055b
YK		 2377 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2378 TCA_FLOWER_KEY_PORT_DST_MIN,
2379 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2380 sizeof(key->tp_range.tp_min.dst)) ||
2381 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2382 TCA_FLOWER_KEY_PORT_DST_MAX,
2383 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2384 sizeof(key->tp_range.tp_max.dst)) ||
2385 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2386 TCA_FLOWER_KEY_PORT_SRC_MIN,
2387 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2388 sizeof(key->tp_range.tp_min.src)) ||
2389 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2390 TCA_FLOWER_KEY_PORT_SRC_MAX,
2391 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2392 sizeof(key->tp_range.tp_max.src)))
5c72299f
AN		 2393 return -1;
2394
2395 return 0;
2396}
2397
61aec25a
GN		 2398static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2399 struct flow_dissector_key_mpls *mpls_key,
2400 struct flow_dissector_key_mpls *mpls_mask,
2401 u8 lse_index)
2402{
2403 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2404 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2405 int err;
2406
2407 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2408 lse_index + 1);
2409 if (err)
2410 return err;
2411
2412 if (lse_mask->mpls_ttl) {
2413 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2414 lse_key->mpls_ttl);
2415 if (err)
2416 return err;
2417 }
2418 if (lse_mask->mpls_bos) {
2419 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2420 lse_key->mpls_bos);
2421 if (err)
2422 return err;
2423 }
2424 if (lse_mask->mpls_tc) {
2425 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2426 lse_key->mpls_tc);
2427 if (err)
2428 return err;
2429 }
2430 if (lse_mask->mpls_label) {
7fdd375e
GN		 2431 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2432 lse_key->mpls_label);
61aec25a
GN		 2433 if (err)
2434 return err;
2435 }
2436
2437 return 0;
2438}
2439
2440static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2441 struct flow_dissector_key_mpls *mpls_key,
2442 struct flow_dissector_key_mpls *mpls_mask)
2443{
2444 struct nlattr *opts;
2445 struct nlattr *lse;
2446 u8 lse_index;
2447 int err;
2448
2449 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2450 if (!opts)
2451 return -EMSGSIZE;
2452
2453 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2454 if (!(mpls_mask->used_lses & 1 << lse_index))
2455 continue;
2456
2457 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2458 if (!lse) {
2459 err = -EMSGSIZE;
2460 goto err_opts;
2461 }
2462
2463 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2464 lse_index);
2465 if (err)
2466 goto err_opts_lse;
2467 nla_nest_end(skb, lse);
2468 }
2469 nla_nest_end(skb, opts);
2470
2471 return 0;
2472
2473err_opts_lse:
2474 nla_nest_cancel(skb, lse);
2475err_opts:
2476 nla_nest_cancel(skb, opts);
2477
2478 return err;
2479}
2480
a577d8f7
BL		 2481static int fl_dump_key_mpls(struct sk_buff *skb,
2482 struct flow_dissector_key_mpls *mpls_key,
2483 struct flow_dissector_key_mpls *mpls_mask)
2484{
58cff782
GN		 2485 struct flow_dissector_mpls_lse *lse_mask;
2486 struct flow_dissector_mpls_lse *lse_key;
a577d8f7
BL		 2487 int err;
2488
61aec25a 2489 if (!mpls_mask->used_lses)
a577d8f7 2490 return 0;
58cff782
GN		 2491
2492 lse_mask = &mpls_mask->ls[0];
2493 lse_key = &mpls_key->ls[0];
2494
61aec25a
GN		 2495 /* For backward compatibility, don't use the MPLS nested attributes if
2496 * the rule can be expressed using the old attributes.
2497 */
2498 if (mpls_mask->used_lses & ~1 ||
2499 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2500 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2501 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2502
58cff782 2503 if (lse_mask->mpls_ttl) {
a577d8f7 2504 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
58cff782 2505 lse_key->mpls_ttl);
a577d8f7
BL		 2506 if (err)
2507 return err;
2508 }
58cff782 2509 if (lse_mask->mpls_tc) {
a577d8f7 2510 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
58cff782 2511 lse_key->mpls_tc);
a577d8f7
BL		 2512 if (err)
2513 return err;
2514 }
58cff782 2515 if (lse_mask->mpls_label) {
a577d8f7 2516 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
58cff782 2517 lse_key->mpls_label);
a577d8f7
BL		 2518 if (err)
2519 return err;
2520 }
58cff782 2521 if (lse_mask->mpls_bos) {
a577d8f7 2522 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
58cff782 2523 lse_key->mpls_bos);
a577d8f7
BL		 2524 if (err)
2525 return err;
2526 }
2527 return 0;
2528}
2529
0e2c17b6 2530static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
4d80cc0a
OG		 2531 struct flow_dissector_key_ip *key,
2532 struct flow_dissector_key_ip *mask)
2533{
0e2c17b6
OG		 2534 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2535 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2536 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2537 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2538
2539 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2540 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
4d80cc0a
OG		 2541 return -1;
2542
2543 return 0;
2544}
2545
9399ae9a 2546static int fl_dump_key_vlan(struct sk_buff *skb,
d64efd09 2547 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 2548 struct flow_dissector_key_vlan *vlan_key,
2549 struct flow_dissector_key_vlan *vlan_mask)
2550{
2551 int err;
2552
2553 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2554 return 0;
2555 if (vlan_mask->vlan_id) {
d64efd09 2556 err = nla_put_u16(skb, vlan_id_key,
9399ae9a
HHZ		 2557 vlan_key->vlan_id);
2558 if (err)
2559 return err;
2560 }
2561 if (vlan_mask->vlan_priority) {
d64efd09 2562 err = nla_put_u8(skb, vlan_prio_key,
9399ae9a
HHZ		 2563 vlan_key->vlan_priority);
2564 if (err)
2565 return err;
2566 }
2567 return 0;
2568}
2569
faa3ffce
OG		 2570static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2571 u32 *flower_key, u32 *flower_mask,
2572 u32 flower_flag_bit, u32 dissector_flag_bit)
2573{
2574 if (dissector_mask & dissector_flag_bit) {
2575 *flower_mask |= flower_flag_bit;
2576 if (dissector_key & dissector_flag_bit)
2577 *flower_key |= flower_flag_bit;
2578 }
2579}
2580
2581static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2582{
2583 u32 key, mask;
2584 __be32 _key, _mask;
2585 int err;
2586
2587 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2588 return 0;
2589
2590 key = 0;
2591 mask = 0;
2592
2593 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2594 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 2595 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2596 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2597 FLOW_DIS_FIRST_FRAG);
faa3ffce
OG		 2598
2599 _key = cpu_to_be32(key);
2600 _mask = cpu_to_be32(mask);
2601
2602 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2603 if (err)
2604 return err;
2605
2606 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2607}
2608
0a6e7778
PJV		 2609static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2610 struct flow_dissector_key_enc_opts *enc_opts)
2611{
2612 struct geneve_opt *opt;
2613 struct nlattr *nest;
2614 int opt_off = 0;
2615
ae0be8de 2616 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
0a6e7778
PJV		 2617 if (!nest)
2618 goto nla_put_failure;
2619
2620 while (enc_opts->len > opt_off) {
2621 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2622
2623 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2624 opt->opt_class))
2625 goto nla_put_failure;
2626 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2627 opt->type))
2628 goto nla_put_failure;
2629 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2630 opt->length * 4, opt->opt_data))
2631 goto nla_put_failure;
2632
2633 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2634 }
2635 nla_nest_end(skb, nest);
2636 return 0;
2637
2638nla_put_failure:
2639 nla_nest_cancel(skb, nest);
2640 return -EMSGSIZE;
2641}
2642
d8f9dfae
XL		 2643static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2644 struct flow_dissector_key_enc_opts *enc_opts)
2645{
2646 struct vxlan_metadata *md;
2647 struct nlattr *nest;
2648
2649 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2650 if (!nest)
2651 goto nla_put_failure;
2652
2653 md = (struct vxlan_metadata *)&enc_opts->data[0];
2654 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2655 goto nla_put_failure;
2656
2657 nla_nest_end(skb, nest);
2658 return 0;
2659
2660nla_put_failure:
2661 nla_nest_cancel(skb, nest);
2662 return -EMSGSIZE;
2663}
2664
79b1011c
XL		 2665static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2666 struct flow_dissector_key_enc_opts *enc_opts)
2667{
2668 struct erspan_metadata *md;
2669 struct nlattr *nest;
2670
2671 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2672 if (!nest)
2673 goto nla_put_failure;
2674
2675 md = (struct erspan_metadata *)&enc_opts->data[0];
2676 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2677 goto nla_put_failure;
2678
2679 if (md->version == 1 &&
2680 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2681 goto nla_put_failure;
2682
2683 if (md->version == 2 &&
2684 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2685 md->u.md2.dir) ||
2686 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2687 get_hwid(&md->u.md2))))
2688 goto nla_put_failure;
2689
2690 nla_nest_end(skb, nest);
2691 return 0;
2692
2693nla_put_failure:
2694 nla_nest_cancel(skb, nest);
2695 return -EMSGSIZE;
2696}
2697
e0ace68a
PB		 2698static int fl_dump_key_ct(struct sk_buff *skb,
2699 struct flow_dissector_key_ct *key,
2700 struct flow_dissector_key_ct *mask)
2701{
2702 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2703 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2704 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2705 sizeof(key->ct_state)))
2706 goto nla_put_failure;
2707
2708 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2709 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2710 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2711 sizeof(key->ct_zone)))
2712 goto nla_put_failure;
2713
2714 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2715 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2716 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2717 sizeof(key->ct_mark)))
2718 goto nla_put_failure;
2719
2720 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2721 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2722 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2723 sizeof(key->ct_labels)))
2724 goto nla_put_failure;
2725
2726 return 0;
2727
2728nla_put_failure:
2729 return -EMSGSIZE;
2730}
2731
0a6e7778
PJV		 2732static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2733 struct flow_dissector_key_enc_opts *enc_opts)
2734{
2735 struct nlattr *nest;
2736 int err;
2737
2738 if (!enc_opts->len)
2739 return 0;
2740
ae0be8de 2741 nest = nla_nest_start_noflag(skb, enc_opt_type);
0a6e7778
PJV		 2742 if (!nest)
2743 goto nla_put_failure;
2744
2745 switch (enc_opts->dst_opt_type) {
2746 case TUNNEL_GENEVE_OPT:
2747 err = fl_dump_key_geneve_opt(skb, enc_opts);
2748 if (err)
2749 goto nla_put_failure;
2750 break;
d8f9dfae
XL		 2751 case TUNNEL_VXLAN_OPT:
2752 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2753 if (err)
2754 goto nla_put_failure;
2755 break;
79b1011c
XL		 2756 case TUNNEL_ERSPAN_OPT:
2757 err = fl_dump_key_erspan_opt(skb, enc_opts);
2758 if (err)
2759 goto nla_put_failure;
2760 break;
0a6e7778
PJV		 2761 default:
2762 goto nla_put_failure;
2763 }
2764 nla_nest_end(skb, nest);
2765 return 0;
2766
2767nla_put_failure:
2768 nla_nest_cancel(skb, nest);
2769 return -EMSGSIZE;
2770}
2771
2772static int fl_dump_key_enc_opt(struct sk_buff *skb,
2773 struct flow_dissector_key_enc_opts *key_opts,
2774 struct flow_dissector_key_enc_opts *msk_opts)
2775{
2776 int err;
2777
2778 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2779 if (err)
2780 return err;
2781
2782 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2783}
2784
f5749081
JP		 2785static int fl_dump_key(struct sk_buff *skb, struct net *net,
2786 struct fl_flow_key *key, struct fl_flow_key *mask)
77b9900e 2787{
8212ed77 2788 if (mask->meta.ingress_ifindex) {
77b9900e
JP		 2789 struct net_device *dev;
2790
8212ed77 2791 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
77b9900e
JP		 2792 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2793 goto nla_put_failure;
2794 }
2795
2796 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2797 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2798 sizeof(key->eth.dst)) ||
2799 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2800 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2801 sizeof(key->eth.src)) ||
2802 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2803 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2804 sizeof(key->basic.n_proto)))
2805 goto nla_put_failure;
9399ae9a 2806
a577d8f7
BL		 2807 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2808 goto nla_put_failure;
2809
d64efd09
JL		 2810 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2811 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
9399ae9a
HHZ		 2812 goto nla_put_failure;
2813
d64efd09
JL		 2814 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2815 TCA_FLOWER_KEY_CVLAN_PRIO,
2816 &key->cvlan, &mask->cvlan) ||
2817 (mask->cvlan.vlan_tpid &&
158abbf1
JL		 2818 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2819 key->cvlan.vlan_tpid)))
d3069512
JL		 2820 goto nla_put_failure;
2821
5e9a0fe4
JL		 2822 if (mask->basic.n_proto) {
2823 if (mask->cvlan.vlan_tpid) {
2824 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2825 key->basic.n_proto))
2826 goto nla_put_failure;
2827 } else if (mask->vlan.vlan_tpid) {
2828 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2829 key->basic.n_proto))
2830 goto nla_put_failure;
2831 }
d64efd09
JL		 2832 }
2833
77b9900e
JP		 2834 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2835 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 2836 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 2837 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a 2838 sizeof(key->basic.ip_proto)) ||
0e2c17b6 2839 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
77b9900e
JP		 2840 goto nla_put_failure;
2841
c3f83241 2842 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 2843 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2844 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2845 sizeof(key->ipv4.src)) ||
2846 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2847 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2848 sizeof(key->ipv4.dst))))
2849 goto nla_put_failure;
c3f83241 2850 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 2851 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2852 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2853 sizeof(key->ipv6.src)) ||
2854 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2855 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2856 sizeof(key->ipv6.dst))))
2857 goto nla_put_failure;
2858
2859 if (key->basic.ip_proto == IPPROTO_TCP &&
2860 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 2861 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 2862 sizeof(key->tp.src)) ||
2863 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 2864 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 2865 sizeof(key->tp.dst)) ||
2866 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2867 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2868 sizeof(key->tcp.flags))))
77b9900e
JP		 2869 goto nla_put_failure;
2870 else if (key->basic.ip_proto == IPPROTO_UDP &&
2871 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 2872 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 2873 sizeof(key->tp.src)) ||
2874 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 2875 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 2876 sizeof(key->tp.dst))))
2877 goto nla_put_failure;
2878 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2879 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2880 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2881 sizeof(key->tp.src)) ||
2882 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2883 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 2884 sizeof(key->tp.dst))))
2885 goto nla_put_failure;
7b684884
SH		 2886 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2887 key->basic.ip_proto == IPPROTO_ICMP &&
2888 (fl_dump_key_val(skb, &key->icmp.type,
2889 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2890 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2891 sizeof(key->icmp.type)) ||
2892 fl_dump_key_val(skb, &key->icmp.code,
2893 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2894 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2895 sizeof(key->icmp.code))))
2896 goto nla_put_failure;
2897 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2898 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2899 (fl_dump_key_val(skb, &key->icmp.type,
2900 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2901 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2902 sizeof(key->icmp.type)) ||
2903 fl_dump_key_val(skb, &key->icmp.code,
2904 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2905 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2906 sizeof(key->icmp.code))))
2907 goto nla_put_failure;
99d31326
SH		 2908 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2909 key->basic.n_proto == htons(ETH_P_RARP)) &&
2910 (fl_dump_key_val(skb, &key->arp.sip,
2911 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2912 TCA_FLOWER_KEY_ARP_SIP_MASK,
2913 sizeof(key->arp.sip)) ||
2914 fl_dump_key_val(skb, &key->arp.tip,
2915 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2916 TCA_FLOWER_KEY_ARP_TIP_MASK,
2917 sizeof(key->arp.tip)) ||
2918 fl_dump_key_val(skb, &key->arp.op,
2919 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2920 TCA_FLOWER_KEY_ARP_OP_MASK,
2921 sizeof(key->arp.op)) ||
2922 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2923 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2924 sizeof(key->arp.sha)) ||
2925 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2926 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2927 sizeof(key->arp.tha))))
2928 goto nla_put_failure;
77b9900e 2929
5c72299f
AN		 2930 if ((key->basic.ip_proto == IPPROTO_TCP ||
2931 key->basic.ip_proto == IPPROTO_UDP ||
2932 key->basic.ip_proto == IPPROTO_SCTP) &&
2933 fl_dump_key_port_range(skb, key, mask))
2934 goto nla_put_failure;
2935
bc3103f1
AV		 2936 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2937 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2938 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2939 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2940 sizeof(key->enc_ipv4.src)) ||
2941 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2942 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2943 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2944 sizeof(key->enc_ipv4.dst))))
2945 goto nla_put_failure;
2946 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2947 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2948 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2949 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2950 sizeof(key->enc_ipv6.src)) ||
2951 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2952 TCA_FLOWER_KEY_ENC_IPV6_DST,
2953 &mask->enc_ipv6.dst,
2954 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2955 sizeof(key->enc_ipv6.dst))))
2956 goto nla_put_failure;
2957
2958 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 2959 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 2960 sizeof(key->enc_key_id)) ||
2961 fl_dump_key_val(skb, &key->enc_tp.src,
2962 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2963 &mask->enc_tp.src,
2964 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2965 sizeof(key->enc_tp.src)) ||
2966 fl_dump_key_val(skb, &key->enc_tp.dst,
2967 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2968 &mask->enc_tp.dst,
2969 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
0e2c17b6 2970 sizeof(key->enc_tp.dst)) ||
0a6e7778
PJV		 2971 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2972 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
bc3103f1
AV		 2973 goto nla_put_failure;
2974
e0ace68a
PB		 2975 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
2976 goto nla_put_failure;
2977
faa3ffce
OG		 2978 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2979 goto nla_put_failure;
2980
5923b8f7
AL		 2981 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
2982 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
2983 sizeof(key->hash.hash)))
2984 goto nla_put_failure;
2985
f5749081
JP		 2986 return 0;
2987
2988nla_put_failure:
2989 return -EMSGSIZE;
2990}
2991
2992static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
12db03b6 2993 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
f5749081
JP		 2994{
2995 struct cls_fl_filter *f = fh;
2996 struct nlattr *nest;
2997 struct fl_flow_key *key, *mask;
3d81e711 2998 bool skip_hw;
f5749081
JP		 2999
3000 if (!f)
3001 return skb->len;
3002
3003 t->tcm_handle = f->handle;
3004
ae0be8de 3005 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
f5749081
JP		 3006 if (!nest)
3007 goto nla_put_failure;
3008
3d81e711
VB		 3009 spin_lock(&tp->lock);
3010
f5749081
JP		 3011 if (f->res.classid &&
3012 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3d81e711 3013 goto nla_put_failure_locked;
f5749081
JP		 3014
3015 key = &f->key;
3016 mask = &f->mask->key;
3d81e711 3017 skip_hw = tc_skip_hw(f->flags);
f5749081
JP		 3018
3019 if (fl_dump_key(skb, net, key, mask))
3d81e711 3020 goto nla_put_failure_locked;
f5749081 3021
749e6720 3022 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3d81e711
VB		 3023 goto nla_put_failure_locked;
3024
3025 spin_unlock(&tp->lock);
3026
3027 if (!skip_hw)
c24e43d8 3028 fl_hw_update_stats(tp, f, rtnl_held);
e69985c6 3029
86c55361
VB		 3030 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3031 goto nla_put_failure;
3032
77b9900e
JP		 3033 if (tcf_exts_dump(skb, &f->exts))
3034 goto nla_put_failure;
3035
3036 nla_nest_end(skb, nest);
3037
3038 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3039 goto nla_put_failure;
3040
3041 return skb->len;
3042
3d81e711
VB		 3043nla_put_failure_locked:
3044 spin_unlock(&tp->lock);
77b9900e
JP		 3045nla_put_failure:
3046 nla_nest_cancel(skb, nest);
3047 return -1;
3048}
3049
0348451d
VB		 3050static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3051 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3052{
3053 struct cls_fl_filter *f = fh;
3054 struct nlattr *nest;
3055 bool skip_hw;
3056
3057 if (!f)
3058 return skb->len;
3059
3060 t->tcm_handle = f->handle;
3061
3062 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3063 if (!nest)
3064 goto nla_put_failure;
3065
3066 spin_lock(&tp->lock);
3067
3068 skip_hw = tc_skip_hw(f->flags);
3069
3070 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3071 goto nla_put_failure_locked;
3072
3073 spin_unlock(&tp->lock);
3074
3075 if (!skip_hw)
3076 fl_hw_update_stats(tp, f, rtnl_held);
3077
3078 if (tcf_exts_terse_dump(skb, &f->exts))
3079 goto nla_put_failure;
3080
3081 nla_nest_end(skb, nest);
3082
3083 return skb->len;
3084
3085nla_put_failure_locked:
3086 spin_unlock(&tp->lock);
3087nla_put_failure:
3088 nla_nest_cancel(skb, nest);
3089 return -1;
3090}
3091
b95ec7eb
JP		 3092static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3093{
3094 struct fl_flow_tmplt *tmplt = tmplt_priv;
3095 struct fl_flow_key *key, *mask;
3096 struct nlattr *nest;
3097
ae0be8de 3098 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
b95ec7eb
JP		 3099 if (!nest)
3100 goto nla_put_failure;
3101
3102 key = &tmplt->dummy_key;
3103 mask = &tmplt->mask;
3104
3105 if (fl_dump_key(skb, net, key, mask))
3106 goto nla_put_failure;
3107
3108 nla_nest_end(skb, nest);
3109
3110 return skb->len;
3111
3112nla_put_failure:
3113 nla_nest_cancel(skb, nest);
3114 return -EMSGSIZE;
3115}
3116
2e24cd75
CW		 3117static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3118 unsigned long base)
07d79fc7
CW		 3119{
3120 struct cls_fl_filter *f = fh;
3121
2e24cd75
CW		 3122 if (f && f->res.classid == classid) {
3123 if (cl)
3124 __tcf_bind_filter(q, &f->res, base);
3125 else
3126 __tcf_unbind_filter(q, &f->res);
3127 }
07d79fc7
CW		 3128}
3129
a5b72a08
DC		 3130static bool fl_delete_empty(struct tcf_proto *tp)
3131{
3132 struct cls_fl_head *head = fl_head_dereference(tp);
3133
3134 spin_lock(&tp->lock);
3135 tp->deleting = idr_is_empty(&head->handle_idr);
3136 spin_unlock(&tp->lock);
3137
3138 return tp->deleting;
3139}
3140
77b9900e
JP		 3141static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3142 .kind = "flower",
3143 .classify = fl_classify,
3144 .init = fl_init,
3145 .destroy = fl_destroy,
3146 .get = fl_get,
06177558 3147 .put = fl_put,
77b9900e
JP		 3148 .change = fl_change,
3149 .delete = fl_delete,
a5b72a08 3150 .delete_empty = fl_delete_empty,
77b9900e 3151 .walk = fl_walk,
31533cba 3152 .reoffload = fl_reoffload,
a449a3e7
VB		 3153 .hw_add = fl_hw_add,
3154 .hw_del = fl_hw_del,
77b9900e 3155 .dump = fl_dump,
0348451d 3156 .terse_dump = fl_terse_dump,
07d79fc7 3157 .bind_class = fl_bind_class,
b95ec7eb
JP		 3158 .tmplt_create = fl_tmplt_create,
3159 .tmplt_destroy = fl_tmplt_destroy,
3160 .tmplt_dump = fl_tmplt_dump,
77b9900e 3161 .owner = THIS_MODULE,
92149190 3162 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
77b9900e
JP		 3163};
3164
3165static int __init cls_fl_init(void)
3166{
3167 return register_tcf_proto_ops(&cls_fl_ops);
3168}
3169
3170static void __exit cls_fl_exit(void)
3171{
3172 unregister_tcf_proto_ops(&cls_fl_ops);
3173}
3174
3175module_init(cls_fl_init);
3176module_exit(cls_fl_exit);
3177
3178MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3179MODULE_DESCRIPTION("Flower classifier");
3180MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)