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flow_dissector: Add L2TPv3 dissectors
[linux-block.git] / net / sched / cls_flower.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
77b9900e
JP		 2/*
3 * net/sched/cls_flower.c Flower classifier
4 *
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
77b9900e
JP		 6 */
7
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/rhashtable.h>
d9363774 12#include <linux/workqueue.h>
06177558 13#include <linux/refcount.h>
77b9900e
JP		 14
15#include <linux/if_ether.h>
16#include <linux/in6.h>
17#include <linux/ip.h>
a577d8f7 18#include <linux/mpls.h>
5008750e 19#include <linux/ppp_defs.h>
77b9900e
JP		 20
21#include <net/sch_generic.h>
22#include <net/pkt_cls.h>
ec624fe7 23#include <net/pkt_sched.h>
77b9900e
JP		 24#include <net/ip.h>
25#include <net/flow_dissector.h>
0a6e7778 26#include <net/geneve.h>
d8f9dfae 27#include <net/vxlan.h>
79b1011c 28#include <net/erspan.h>
e3acda7a 29#include <net/gtp.h>
77b9900e 30
bc3103f1
AV		 31#include <net/dst.h>
32#include <net/dst_metadata.h>
33
e0ace68a
PB		 34#include <uapi/linux/netfilter/nf_conntrack_common.h>
35
1bcc51ac 36#define TCA_FLOWER_KEY_CT_FLAGS_MAX \
37 ((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
38#define TCA_FLOWER_KEY_CT_FLAGS_MASK \
39 (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
40
77b9900e 41struct fl_flow_key {
8212ed77 42 struct flow_dissector_key_meta meta;
42aecaa9 43 struct flow_dissector_key_control control;
bc3103f1 44 struct flow_dissector_key_control enc_control;
77b9900e
JP		 45 struct flow_dissector_key_basic basic;
46 struct flow_dissector_key_eth_addrs eth;
9399ae9a 47 struct flow_dissector_key_vlan vlan;
d64efd09 48 struct flow_dissector_key_vlan cvlan;
77b9900e 49 union {
c3f83241 50 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 51 struct flow_dissector_key_ipv6_addrs ipv6;
52 };
53 struct flow_dissector_key_ports tp;
7b684884 54 struct flow_dissector_key_icmp icmp;
99d31326 55 struct flow_dissector_key_arp arp;
bc3103f1
AV		 56 struct flow_dissector_key_keyid enc_key_id;
57 union {
58 struct flow_dissector_key_ipv4_addrs enc_ipv4;
59 struct flow_dissector_key_ipv6_addrs enc_ipv6;
60 };
f4d997fd 61 struct flow_dissector_key_ports enc_tp;
a577d8f7 62 struct flow_dissector_key_mpls mpls;
fdfc7dd6 63 struct flow_dissector_key_tcp tcp;
4d80cc0a 64 struct flow_dissector_key_ip ip;
0e2c17b6 65 struct flow_dissector_key_ip enc_ip;
0a6e7778 66 struct flow_dissector_key_enc_opts enc_opts;
83d85bb0 67 struct flow_dissector_key_ports_range tp_range;
e0ace68a 68 struct flow_dissector_key_ct ct;
5923b8f7 69 struct flow_dissector_key_hash hash;
b4000312 70 struct flow_dissector_key_num_of_vlans num_of_vlans;
5008750e 71 struct flow_dissector_key_pppoe pppoe;
77b9900e
JP		 72} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
73
74struct fl_flow_mask_range {
75 unsigned short int start;
76 unsigned short int end;
77};
78
79struct fl_flow_mask {
80 struct fl_flow_key key;
81 struct fl_flow_mask_range range;
5c72299f 82 u32 flags;
05cd271f
PB		 83 struct rhash_head ht_node;
84 struct rhashtable ht;
85 struct rhashtable_params filter_ht_params;
86 struct flow_dissector dissector;
87 struct list_head filters;
44a5cd43 88 struct rcu_work rwork;
05cd271f 89 struct list_head list;
f48ef4d5 90 refcount_t refcnt;
77b9900e
JP		 91};
92
b95ec7eb
JP		 93struct fl_flow_tmplt {
94 struct fl_flow_key dummy_key;
95 struct fl_flow_key mask;
96 struct flow_dissector dissector;
97 struct tcf_chain *chain;
98};
99
77b9900e
JP		 100struct cls_fl_head {
101 struct rhashtable ht;
259e60f9 102 spinlock_t masks_lock; /* Protect masks list */
05cd271f 103 struct list_head masks;
c049d56e 104 struct list_head hw_filters;
aaa908ff 105 struct rcu_work rwork;
c15ab236 106 struct idr handle_idr;
77b9900e
JP		 107};
108
109struct cls_fl_filter {
05cd271f 110 struct fl_flow_mask *mask;
77b9900e
JP		 111 struct rhash_head ht_node;
112 struct fl_flow_key mkey;
113 struct tcf_exts exts;
114 struct tcf_result res;
115 struct fl_flow_key key;
116 struct list_head list;
c049d56e 117 struct list_head hw_list;
77b9900e 118 u32 handle;
e69985c6 119 u32 flags;
86c55361 120 u32 in_hw_count;
aaa908ff 121 struct rcu_work rwork;
7091d8c7 122 struct net_device *hw_dev;
06177558
VB		 123 /* Flower classifier is unlocked, which means that its reference counter
124 * can be changed concurrently without any kind of external
125 * synchronization. Use atomic reference counter to be concurrency-safe.
126 */
127 refcount_t refcnt;
b2552b8c 128 bool deleted;
77b9900e
JP		 129};
130
05cd271f
PB		 131static const struct rhashtable_params mask_ht_params = {
132 .key_offset = offsetof(struct fl_flow_mask, key),
133 .key_len = sizeof(struct fl_flow_key),
134 .head_offset = offsetof(struct fl_flow_mask, ht_node),
135 .automatic_shrinking = true,
136};
137
77b9900e
JP		 138static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
139{
140 return mask->range.end - mask->range.start;
141}
142
143static void fl_mask_update_range(struct fl_flow_mask *mask)
144{
145 const u8 *bytes = (const u8 *) &mask->key;
146 size_t size = sizeof(mask->key);
05cd271f 147 size_t i, first = 0, last;
77b9900e 148
05cd271f
PB		 149 for (i = 0; i < size; i++) {
150 if (bytes[i]) {
151 first = i;
152 break;
153 }
154 }
155 last = first;
156 for (i = size - 1; i != first; i--) {
77b9900e 157 if (bytes[i]) {
77b9900e 158 last = i;
05cd271f 159 break;
77b9900e
JP		 160 }
161 }
162 mask->range.start = rounddown(first, sizeof(long));
163 mask->range.end = roundup(last + 1, sizeof(long));
164}
165
166static void *fl_key_get_start(struct fl_flow_key *key,
167 const struct fl_flow_mask *mask)
168{
169 return (u8 *) key + mask->range.start;
170}
171
172static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
173 struct fl_flow_mask *mask)
174{
175 const long *lkey = fl_key_get_start(key, mask);
176 const long *lmask = fl_key_get_start(&mask->key, mask);
177 long *lmkey = fl_key_get_start(mkey, mask);
178 int i;
179
180 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
181 *lmkey++ = *lkey++ & *lmask++;
182}
183
b95ec7eb
JP		 184static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
185 struct fl_flow_mask *mask)
186{
187 const long *lmask = fl_key_get_start(&mask->key, mask);
188 const long *ltmplt;
189 int i;
190
191 if (!tmplt)
192 return true;
193 ltmplt = fl_key_get_start(&tmplt->mask, mask);
194 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
195 if (~*ltmplt++ & *lmask++)
196 return false;
197 }
198 return true;
199}
200
77b9900e
JP		 201static void fl_clear_masked_range(struct fl_flow_key *key,
202 struct fl_flow_mask *mask)
203{
204 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
205}
206
5c72299f
AN		 207static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
208 struct fl_flow_key *key,
209 struct fl_flow_key *mkey)
210{
6215afcb 211 u16 min_mask, max_mask, min_val, max_val;
5c72299f 212
6215afcb
VO		 213 min_mask = ntohs(filter->mask->key.tp_range.tp_min.dst);
214 max_mask = ntohs(filter->mask->key.tp_range.tp_max.dst);
215 min_val = ntohs(filter->key.tp_range.tp_min.dst);
216 max_val = ntohs(filter->key.tp_range.tp_max.dst);
5c72299f
AN		 217
218 if (min_mask && max_mask) {
6215afcb
VO		 219 if (ntohs(key->tp_range.tp.dst) < min_val ||
220 ntohs(key->tp_range.tp.dst) > max_val)
5c72299f
AN		 221 return false;
222
223 /* skb does not have min and max values */
8ffb055b
YK		 224 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
225 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
5c72299f
AN		 226 }
227 return true;
228}
229
230static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
231 struct fl_flow_key *key,
232 struct fl_flow_key *mkey)
233{
6215afcb 234 u16 min_mask, max_mask, min_val, max_val;
5c72299f 235
6215afcb
VO		 236 min_mask = ntohs(filter->mask->key.tp_range.tp_min.src);
237 max_mask = ntohs(filter->mask->key.tp_range.tp_max.src);
238 min_val = ntohs(filter->key.tp_range.tp_min.src);
239 max_val = ntohs(filter->key.tp_range.tp_max.src);
5c72299f
AN		 240
241 if (min_mask && max_mask) {
6215afcb
VO		 242 if (ntohs(key->tp_range.tp.src) < min_val ||
243 ntohs(key->tp_range.tp.src) > max_val)
5c72299f
AN		 244 return false;
245
246 /* skb does not have min and max values */
8ffb055b
YK		 247 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
248 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
5c72299f
AN		 249 }
250 return true;
251}
252
253static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
254 struct fl_flow_key *mkey)
a3308d8f 255{
05cd271f
PB		 256 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
257 mask->filter_ht_params);
a3308d8f
PB		 258}
259
5c72299f
AN		 260static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
261 struct fl_flow_key *mkey,
262 struct fl_flow_key *key)
263{
264 struct cls_fl_filter *filter, *f;
265
266 list_for_each_entry_rcu(filter, &mask->filters, list) {
267 if (!fl_range_port_dst_cmp(filter, key, mkey))
268 continue;
269
270 if (!fl_range_port_src_cmp(filter, key, mkey))
271 continue;
272
273 f = __fl_lookup(mask, mkey);
274 if (f)
275 return f;
276 }
277 return NULL;
278}
279
0af413bd
AB		 280static noinline_for_stack
281struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
5c72299f 282{
0af413bd
AB		 283 struct fl_flow_key mkey;
284
285 fl_set_masked_key(&mkey, key, mask);
5c72299f 286 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
0af413bd 287 return fl_lookup_range(mask, &mkey, key);
5c72299f 288
0af413bd 289 return __fl_lookup(mask, &mkey);
5c72299f
AN		 290}
291
e0ace68a
PB		 292static u16 fl_ct_info_to_flower_map[] = {
293 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
294 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
295 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
296 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
297 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
8c85d18c
PB		 298 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
299 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
e0ace68a 300 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
8c85d18c
PB		 301 TCA_FLOWER_KEY_CT_FLAGS_RELATED |
302 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
e0ace68a
PB		 303 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
304 TCA_FLOWER_KEY_CT_FLAGS_NEW,
305};
306
77b9900e
JP		 307static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
308 struct tcf_result *res)
309{
310 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
ec624fe7 311 bool post_ct = tc_skb_cb(skb)->post_ct;
38495958 312 u16 zone = tc_skb_cb(skb)->zone;
e0ace68a
PB		 313 struct fl_flow_key skb_key;
314 struct fl_flow_mask *mask;
315 struct cls_fl_filter *f;
77b9900e 316
05cd271f 317 list_for_each_entry_rcu(mask, &head->masks, list) {
8a9093c7 318 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
05cd271f 319 fl_clear_masked_range(&skb_key, mask);
bc3103f1 320
8212ed77 321 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
05cd271f
PB		 322 /* skb_flow_dissect() does not set n_proto in case an unknown
323 * protocol, so do it rather here.
324 */
d7bf2ebe 325 skb_key.basic.n_proto = skb_protocol(skb, false);
05cd271f 326 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
e0ace68a
PB		 327 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
328 fl_ct_info_to_flower_map,
7baf2429 329 ARRAY_SIZE(fl_ct_info_to_flower_map),
38495958 330 post_ct, zone);
5923b8f7 331 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
6de6e46d
YK		 332 skb_flow_dissect(skb, &mask->dissector, &skb_key,
333 FLOW_DISSECTOR_F_STOP_BEFORE_ENCAP);
77b9900e 334
0af413bd 335 f = fl_mask_lookup(mask, &skb_key);
05cd271f
PB		 336 if (f && !tc_skip_sw(f->flags)) {
337 *res = f->res;
338 return tcf_exts_exec(skb, &f->exts, res);
339 }
77b9900e
JP		 340 }
341 return -1;
342}
343
344static int fl_init(struct tcf_proto *tp)
345{
346 struct cls_fl_head *head;
347
348 head = kzalloc(sizeof(*head), GFP_KERNEL);
349 if (!head)
350 return -ENOBUFS;
351
259e60f9 352 spin_lock_init(&head->masks_lock);
05cd271f 353 INIT_LIST_HEAD_RCU(&head->masks);
c049d56e 354 INIT_LIST_HEAD(&head->hw_filters);
77b9900e 355 rcu_assign_pointer(tp->root, head);
c15ab236 356 idr_init(&head->handle_idr);
77b9900e 357
05cd271f
PB		 358 return rhashtable_init(&head->ht, &mask_ht_params);
359}
360
99815f50 361static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
44a5cd43 362{
99815f50
VB		 363 /* temporary masks don't have their filters list and ht initialized */
364 if (mask_init_done) {
365 WARN_ON(!list_empty(&mask->filters));
366 rhashtable_destroy(&mask->ht);
367 }
44a5cd43
PA		 368 kfree(mask);
369}
370
371static void fl_mask_free_work(struct work_struct *work)
372{
373 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
374 struct fl_flow_mask, rwork);
375
99815f50
VB		 376 fl_mask_free(mask, true);
377}
378
379static void fl_uninit_mask_free_work(struct work_struct *work)
380{
381 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
382 struct fl_flow_mask, rwork);
383
384 fl_mask_free(mask, false);
44a5cd43
PA		 385}
386
9994677c 387static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
05cd271f 388{
f48ef4d5 389 if (!refcount_dec_and_test(&mask->refcnt))
05cd271f
PB		 390 return false;
391
392 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
259e60f9
VB		 393
394 spin_lock(&head->masks_lock);
05cd271f 395 list_del_rcu(&mask->list);
259e60f9
VB		 396 spin_unlock(&head->masks_lock);
397
9994677c 398 tcf_queue_work(&mask->rwork, fl_mask_free_work);
05cd271f
PB		 399
400 return true;
77b9900e
JP		 401}
402
c049d56e
VB		 403static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
404{
405 /* Flower classifier only changes root pointer during init and destroy.
406 * Users must obtain reference to tcf_proto instance before calling its
407 * API, so tp->root pointer is protected from concurrent call to
408 * fl_destroy() by reference counting.
409 */
410 return rcu_dereference_raw(tp->root);
411}
412
0dadc117
CW		 413static void __fl_destroy_filter(struct cls_fl_filter *f)
414{
415 tcf_exts_destroy(&f->exts);
416 tcf_exts_put_net(&f->exts);
417 kfree(f);
418}
419
0552c8af 420static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 421{
aaa908ff
CW		 422 struct cls_fl_filter *f = container_of(to_rcu_work(work),
423 struct cls_fl_filter, rwork);
77b9900e 424
0dadc117 425 __fl_destroy_filter(f);
0552c8af
CW		 426}
427
1b0f8037 428static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8 429 bool rtnl_held, struct netlink_ext_ack *extack)
5b33f488 430{
208c0f4b 431 struct tcf_block *block = tp->chain->block;
f9e30088 432 struct flow_cls_offload cls_flower = {};
5b33f488 433
d6787147 434 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 435 cls_flower.command = FLOW_CLS_DESTROY;
de4784ca 436 cls_flower.cookie = (unsigned long) f;
5b33f488 437
40119211 438 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
918190f5 439 &f->flags, &f->in_hw_count, rtnl_held);
c24e43d8 440
5b33f488
AV		 441}
442
e8eb36cd 443static int fl_hw_replace_filter(struct tcf_proto *tp,
c24e43d8 444 struct cls_fl_filter *f, bool rtnl_held,
41002038 445 struct netlink_ext_ack *extack)
5b33f488 446{
208c0f4b 447 struct tcf_block *block = tp->chain->block;
f9e30088 448 struct flow_cls_offload cls_flower = {};
717503b9 449 bool skip_sw = tc_skip_sw(f->flags);
c24e43d8
VB		 450 int err = 0;
451
e3ab786b 452 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
918190f5
VB		 453 if (!cls_flower.rule)
454 return -ENOMEM;
8f256622 455
d6787147 456 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 457 cls_flower.command = FLOW_CLS_REPLACE;
de4784ca 458 cls_flower.cookie = (unsigned long) f;
8f256622
PNA		 459 cls_flower.rule->match.dissector = &f->mask->dissector;
460 cls_flower.rule->match.mask = &f->mask->key;
461 cls_flower.rule->match.key = &f->mkey;
384c181e 462 cls_flower.classid = f->res.classid;
5b33f488 463
c2ccf84e
IS		 464 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
465 cls_flower.common.extack);
3a7b6861
PNA		 466 if (err) {
467 kfree(cls_flower.rule);
11c95317
IS		 468
469 return skip_sw ? err : 0;
3a7b6861
PNA		 470 }
471
40119211 472 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
918190f5 473 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
9c1c0e12 474 tc_cleanup_offload_action(&cls_flower.rule->action);
8f256622
PNA		 475 kfree(cls_flower.rule);
476
40119211 477 if (err) {
918190f5
VB		 478 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
479 return err;
717503b9
JP		 480 }
481
918190f5
VB		 482 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
483 return -EINVAL;
c24e43d8 484
918190f5 485 return 0;
5b33f488
AV		 486}
487
c24e43d8
VB		 488static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
489 bool rtnl_held)
10cbc684 490{
208c0f4b 491 struct tcf_block *block = tp->chain->block;
f9e30088 492 struct flow_cls_offload cls_flower = {};
10cbc684 493
d6787147 494 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
f9e30088 495 cls_flower.command = FLOW_CLS_STATS;
de4784ca 496 cls_flower.cookie = (unsigned long) f;
384c181e 497 cls_flower.classid = f->res.classid;
10cbc684 498
918190f5
VB		 499 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
500 rtnl_held);
3b1903ef 501
bcd64368
BZ		 502 tcf_exts_hw_stats_update(&f->exts, cls_flower.stats.bytes,
503 cls_flower.stats.pkts,
504 cls_flower.stats.drops,
505 cls_flower.stats.lastused,
506 cls_flower.stats.used_hw_stats,
507 cls_flower.stats.used_hw_stats_valid);
10cbc684
AV		 508}
509
06177558
VB		 510static void __fl_put(struct cls_fl_filter *f)
511{
512 if (!refcount_dec_and_test(&f->refcnt))
513 return;
514
515 if (tcf_exts_get_net(&f->exts))
516 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
517 else
518 __fl_destroy_filter(f);
519}
520
521static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
522{
523 struct cls_fl_filter *f;
524
525 rcu_read_lock();
526 f = idr_find(&head->handle_idr, handle);
527 if (f && !refcount_inc_not_zero(&f->refcnt))
528 f = NULL;
529 rcu_read_unlock();
530
531 return f;
532}
533
b2552b8c 534static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8
VB		 535 bool *last, bool rtnl_held,
536 struct netlink_ext_ack *extack)
13fa876e 537{
e474619a 538 struct cls_fl_head *head = fl_head_dereference(tp);
c15ab236 539
b2552b8c
VB		 540 *last = false;
541
3d81e711
VB		 542 spin_lock(&tp->lock);
543 if (f->deleted) {
544 spin_unlock(&tp->lock);
b2552b8c 545 return -ENOENT;
3d81e711 546 }
b2552b8c
VB		 547
548 f->deleted = true;
549 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
550 f->mask->filter_ht_params);
9c160941 551 idr_remove(&head->handle_idr, f->handle);
13fa876e 552 list_del_rcu(&f->list);
3d81e711
VB		 553 spin_unlock(&tp->lock);
554
9994677c 555 *last = fl_mask_put(head, f->mask);
79685219 556 if (!tc_skip_hw(f->flags))
c24e43d8 557 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
13fa876e 558 tcf_unbind_filter(tp, &f->res);
06177558 559 __fl_put(f);
05cd271f 560
b2552b8c 561 return 0;
13fa876e
RD		 562}
563
d9363774
DB		 564static void fl_destroy_sleepable(struct work_struct *work)
565{
aaa908ff
CW		 566 struct cls_fl_head *head = container_of(to_rcu_work(work),
567 struct cls_fl_head,
568 rwork);
de9dc650
PB		 569
570 rhashtable_destroy(&head->ht);
d9363774
DB		 571 kfree(head);
572 module_put(THIS_MODULE);
573}
574
12db03b6
VB		 575static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
576 struct netlink_ext_ack *extack)
77b9900e 577{
e474619a 578 struct cls_fl_head *head = fl_head_dereference(tp);
05cd271f 579 struct fl_flow_mask *mask, *next_mask;
77b9900e 580 struct cls_fl_filter *f, *next;
b2552b8c 581 bool last;
77b9900e 582
05cd271f
PB		 583 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
584 list_for_each_entry_safe(f, next, &mask->filters, list) {
c24e43d8 585 __fl_delete(tp, f, &last, rtnl_held, extack);
b2552b8c 586 if (last)
05cd271f
PB		 587 break;
588 }
589 }
c15ab236 590 idr_destroy(&head->handle_idr);
d9363774
DB		 591
592 __module_get(THIS_MODULE);
aaa908ff 593 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
77b9900e
JP		 594}
595
06177558
VB		 596static void fl_put(struct tcf_proto *tp, void *arg)
597{
598 struct cls_fl_filter *f = arg;
599
600 __fl_put(f);
601}
602
8113c095 603static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e 604{
e474619a 605 struct cls_fl_head *head = fl_head_dereference(tp);
77b9900e 606
06177558 607 return __fl_get(head, handle);
77b9900e
JP		 608}
609
610static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
611 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
612 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
613 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
614 .len = IFNAMSIZ },
615 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
616 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
617 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
618 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
619 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
620 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
621 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
622 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
623 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
624 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
625 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
626 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
627 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
628 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
629 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
630 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 631 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
632 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 633 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
634 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
635 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 636 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
637 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
638 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
639 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
640 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
641 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
642 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
643 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
644 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 645 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
646 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
647 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
648 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 649 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
650 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
651 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
652 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 653 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
654 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
655 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
656 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 657 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
658 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 659 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
660 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
661 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
662 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
663 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
666 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 667 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
668 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
669 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
670 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
671 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
672 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
673 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
674 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
675 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
676 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 677 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
678 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
679 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
680 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
61aec25a 681 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
fdfc7dd6
JP		 682 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
683 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 684 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
685 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
686 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
687 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
d64efd09
JL		 688 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
689 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
0e2c17b6
OG		 691 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
692 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
693 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
694 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
0a6e7778
PJV		 695 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
696 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
1bcc51ac 697 [TCA_FLOWER_KEY_CT_STATE] =
698 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
699 [TCA_FLOWER_KEY_CT_STATE_MASK] =
700 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
e0ace68a
PB		 701 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
702 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
703 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
704 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
705 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
706 .len = 128 / BITS_PER_BYTE },
707 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
708 .len = 128 / BITS_PER_BYTE },
e2debf08 709 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
5923b8f7
AL		 710 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
711 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
b4000312 712 [TCA_FLOWER_KEY_NUM_OF_VLANS] = { .type = NLA_U8 },
5008750e
WD		 713 [TCA_FLOWER_KEY_PPPOE_SID] = { .type = NLA_U16 },
714 [TCA_FLOWER_KEY_PPP_PROTO] = { .type = NLA_U16 },
5923b8f7 715
0a6e7778
PJV		 716};
717
718static const struct nla_policy
719enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
d8f9dfae
XL		 720 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
721 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
0a6e7778 722 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
d8f9dfae 723 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
79b1011c 724 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
e3acda7a 725 [TCA_FLOWER_KEY_ENC_OPTS_GTP] = { .type = NLA_NESTED },
0a6e7778
PJV		 726};
727
728static const struct nla_policy
729geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
730 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
731 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
732 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
733 .len = 128 },
77b9900e
JP		 734};
735
d8f9dfae
XL		 736static const struct nla_policy
737vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
738 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
739};
740
79b1011c
XL		 741static const struct nla_policy
742erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
743 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
744 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
745 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
746 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
747};
748
e3acda7a
WD		 749static const struct nla_policy
750gtp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1] = {
751 [TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] = { .type = NLA_U8 },
752 [TCA_FLOWER_KEY_ENC_OPT_GTP_QFI] = { .type = NLA_U8 },
753};
754
61aec25a
GN		 755static const struct nla_policy
756mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
757 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
758 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
759 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
760 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
761 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
762};
763
77b9900e
JP		 764static void fl_set_key_val(struct nlattr **tb,
765 void *val, int val_type,
766 void *mask, int mask_type, int len)
767{
768 if (!tb[val_type])
769 return;
e0ace68a 770 nla_memcpy(val, tb[val_type], len);
77b9900e
JP		 771 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
772 memset(mask, 0xff, len);
773 else
e0ace68a 774 nla_memcpy(mask, tb[mask_type], len);
77b9900e
JP		 775}
776
5c72299f 777static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
bd7d4c12
GN		 778 struct fl_flow_key *mask,
779 struct netlink_ext_ack *extack)
5c72299f 780{
8ffb055b
YK		 781 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
782 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
783 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
784 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
785 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
786 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
787 fl_set_key_val(tb, &key->tp_range.tp_min.src,
788 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
789 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
790 fl_set_key_val(tb, &key->tp_range.tp_max.src,
791 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
792 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
793
bd7d4c12 794 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
6215afcb
VO		 795 ntohs(key->tp_range.tp_max.dst) <=
796 ntohs(key->tp_range.tp_min.dst)) {
bd7d4c12
GN		 797 NL_SET_ERR_MSG_ATTR(extack,
798 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
799 "Invalid destination port range (min must be strictly smaller than max)");
5c72299f 800 return -EINVAL;
bd7d4c12
GN		 801 }
802 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
6215afcb
VO		 803 ntohs(key->tp_range.tp_max.src) <=
804 ntohs(key->tp_range.tp_min.src)) {
bd7d4c12
GN		 805 NL_SET_ERR_MSG_ATTR(extack,
806 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
807 "Invalid source port range (min must be strictly smaller than max)");
808 return -EINVAL;
809 }
5c72299f
AN		 810
811 return 0;
812}
813
61aec25a
GN		 814static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
815 struct flow_dissector_key_mpls *key_val,
816 struct flow_dissector_key_mpls *key_mask,
817 struct netlink_ext_ack *extack)
818{
819 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
820 struct flow_dissector_mpls_lse *lse_mask;
821 struct flow_dissector_mpls_lse *lse_val;
822 u8 lse_index;
823 u8 depth;
824 int err;
825
826 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
827 mpls_stack_entry_policy, extack);
828 if (err < 0)
829 return err;
830
831 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
832 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
833 return -EINVAL;
834 }
835
836 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
837
838 /* LSE depth starts at 1, for consistency with terminology used by
839 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
840 */
841 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
842 NL_SET_ERR_MSG_ATTR(extack,
843 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
844 "Invalid MPLS depth");
845 return -EINVAL;
846 }
847 lse_index = depth - 1;
848
849 dissector_set_mpls_lse(key_val, lse_index);
850 dissector_set_mpls_lse(key_mask, lse_index);
851
852 lse_val = &key_val->ls[lse_index];
853 lse_mask = &key_mask->ls[lse_index];
854
855 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
856 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
857 lse_mask->mpls_ttl = MPLS_TTL_MASK;
858 }
859 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
860 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
861
862 if (bos & ~MPLS_BOS_MASK) {
863 NL_SET_ERR_MSG_ATTR(extack,
864 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
865 "Bottom Of Stack (BOS) must be 0 or 1");
866 return -EINVAL;
867 }
868 lse_val->mpls_bos = bos;
869 lse_mask->mpls_bos = MPLS_BOS_MASK;
870 }
871 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
872 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
873
874 if (tc & ~MPLS_TC_MASK) {
875 NL_SET_ERR_MSG_ATTR(extack,
876 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
877 "Traffic Class (TC) must be between 0 and 7");
878 return -EINVAL;
879 }
880 lse_val->mpls_tc = tc;
881 lse_mask->mpls_tc = MPLS_TC_MASK;
882 }
883 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
884 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
885
886 if (label & ~MPLS_LABEL_MASK) {
887 NL_SET_ERR_MSG_ATTR(extack,
888 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
889 "Label must be between 0 and 1048575");
890 return -EINVAL;
891 }
892 lse_val->mpls_label = label;
893 lse_mask->mpls_label = MPLS_LABEL_MASK;
894 }
895
896 return 0;
897}
898
899static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
900 struct flow_dissector_key_mpls *key_val,
901 struct flow_dissector_key_mpls *key_mask,
902 struct netlink_ext_ack *extack)
903{
904 struct nlattr *nla_lse;
905 int rem;
906 int err;
907
908 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
909 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
910 "NLA_F_NESTED is missing");
911 return -EINVAL;
912 }
913
914 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
915 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
916 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
917 "Invalid MPLS option type");
918 return -EINVAL;
919 }
920
921 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
922 if (err < 0)
923 return err;
924 }
925 if (rem) {
926 NL_SET_ERR_MSG(extack,
927 "Bytes leftover after parsing MPLS options");
928 return -EINVAL;
929 }
930
931 return 0;
932}
933
1a7fca63
BL		 934static int fl_set_key_mpls(struct nlattr **tb,
935 struct flow_dissector_key_mpls *key_val,
442f730e
GN		 936 struct flow_dissector_key_mpls *key_mask,
937 struct netlink_ext_ack *extack)
a577d8f7 938{
58cff782
GN		 939 struct flow_dissector_mpls_lse *lse_mask;
940 struct flow_dissector_mpls_lse *lse_val;
941
61aec25a
GN		 942 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
943 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
944 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
945 tb[TCA_FLOWER_KEY_MPLS_TC] ||
946 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
947 NL_SET_ERR_MSG_ATTR(extack,
948 tb[TCA_FLOWER_KEY_MPLS_OPTS],
949 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
950 return -EBADMSG;
951 }
952
953 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
954 key_val, key_mask, extack);
955 }
956
58cff782
GN		 957 lse_val = &key_val->ls[0];
958 lse_mask = &key_mask->ls[0];
959
a577d8f7 960 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
58cff782
GN		 961 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
962 lse_mask->mpls_ttl = MPLS_TTL_MASK;
963 dissector_set_mpls_lse(key_val, 0);
964 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 965 }
966 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 967 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
968
442f730e
GN		 969 if (bos & ~MPLS_BOS_MASK) {
970 NL_SET_ERR_MSG_ATTR(extack,
971 tb[TCA_FLOWER_KEY_MPLS_BOS],
972 "Bottom Of Stack (BOS) must be 0 or 1");
1a7fca63 973 return -EINVAL;
442f730e 974 }
58cff782
GN		 975 lse_val->mpls_bos = bos;
976 lse_mask->mpls_bos = MPLS_BOS_MASK;
977 dissector_set_mpls_lse(key_val, 0);
978 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 979 }
980 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 981 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
982
442f730e
GN		 983 if (tc & ~MPLS_TC_MASK) {
984 NL_SET_ERR_MSG_ATTR(extack,
985 tb[TCA_FLOWER_KEY_MPLS_TC],
986 "Traffic Class (TC) must be between 0 and 7");
1a7fca63 987 return -EINVAL;
442f730e 988 }
58cff782
GN		 989 lse_val->mpls_tc = tc;
990 lse_mask->mpls_tc = MPLS_TC_MASK;
991 dissector_set_mpls_lse(key_val, 0);
992 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 993 }
994 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 995 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
996
442f730e
GN		 997 if (label & ~MPLS_LABEL_MASK) {
998 NL_SET_ERR_MSG_ATTR(extack,
999 tb[TCA_FLOWER_KEY_MPLS_LABEL],
1000 "Label must be between 0 and 1048575");
1a7fca63 1001 return -EINVAL;
442f730e 1002 }
58cff782
GN		 1003 lse_val->mpls_label = label;
1004 lse_mask->mpls_label = MPLS_LABEL_MASK;
1005 dissector_set_mpls_lse(key_val, 0);
1006 dissector_set_mpls_lse(key_mask, 0);
a577d8f7 1007 }
1a7fca63 1008 return 0;
a577d8f7
BL		 1009}
1010
9399ae9a 1011static void fl_set_key_vlan(struct nlattr **tb,
aaab0834 1012 __be16 ethertype,
d64efd09 1013 int vlan_id_key, int vlan_prio_key,
2105f700 1014 int vlan_next_eth_type_key,
9399ae9a
HHZ		 1015 struct flow_dissector_key_vlan *key_val,
1016 struct flow_dissector_key_vlan *key_mask)
1017{
1018#define VLAN_PRIORITY_MASK 0x7
1019
d64efd09 1020 if (tb[vlan_id_key]) {
9399ae9a 1021 key_val->vlan_id =
d64efd09 1022 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
9399ae9a
HHZ		 1023 key_mask->vlan_id = VLAN_VID_MASK;
1024 }
d64efd09 1025 if (tb[vlan_prio_key]) {
9399ae9a 1026 key_val->vlan_priority =
d64efd09 1027 nla_get_u8(tb[vlan_prio_key]) &
9399ae9a
HHZ		 1028 VLAN_PRIORITY_MASK;
1029 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1030 }
99fdb22b
BS		 1031 if (ethertype) {
1032 key_val->vlan_tpid = ethertype;
1033 key_mask->vlan_tpid = cpu_to_be16(~0);
1034 }
2105f700
VB		 1035 if (tb[vlan_next_eth_type_key]) {
1036 key_val->vlan_eth_type =
1037 nla_get_be16(tb[vlan_next_eth_type_key]);
1038 key_mask->vlan_eth_type = cpu_to_be16(~0);
1039 }
9399ae9a
HHZ		 1040}
1041
5008750e
WD		 1042static void fl_set_key_pppoe(struct nlattr **tb,
1043 struct flow_dissector_key_pppoe *key_val,
1044 struct flow_dissector_key_pppoe *key_mask,
1045 struct fl_flow_key *key,
1046 struct fl_flow_key *mask)
1047{
1048 /* key_val::type must be set to ETH_P_PPP_SES
1049 * because ETH_P_PPP_SES was stored in basic.n_proto
1050 * which might get overwritten by ppp_proto
1051 * or might be set to 0, the role of key_val::type
1052 * is simmilar to vlan_key::tpid
1053 */
1054 key_val->type = htons(ETH_P_PPP_SES);
1055 key_mask->type = cpu_to_be16(~0);
1056
1057 if (tb[TCA_FLOWER_KEY_PPPOE_SID]) {
1058 key_val->session_id =
1059 nla_get_be16(tb[TCA_FLOWER_KEY_PPPOE_SID]);
1060 key_mask->session_id = cpu_to_be16(~0);
1061 }
1062 if (tb[TCA_FLOWER_KEY_PPP_PROTO]) {
1063 key_val->ppp_proto =
1064 nla_get_be16(tb[TCA_FLOWER_KEY_PPP_PROTO]);
1065 key_mask->ppp_proto = cpu_to_be16(~0);
1066
1067 if (key_val->ppp_proto == htons(PPP_IP)) {
1068 key->basic.n_proto = htons(ETH_P_IP);
1069 mask->basic.n_proto = cpu_to_be16(~0);
1070 } else if (key_val->ppp_proto == htons(PPP_IPV6)) {
1071 key->basic.n_proto = htons(ETH_P_IPV6);
1072 mask->basic.n_proto = cpu_to_be16(~0);
1073 } else if (key_val->ppp_proto == htons(PPP_MPLS_UC)) {
1074 key->basic.n_proto = htons(ETH_P_MPLS_UC);
1075 mask->basic.n_proto = cpu_to_be16(~0);
1076 } else if (key_val->ppp_proto == htons(PPP_MPLS_MC)) {
1077 key->basic.n_proto = htons(ETH_P_MPLS_MC);
1078 mask->basic.n_proto = cpu_to_be16(~0);
1079 }
1080 } else {
1081 key->basic.n_proto = 0;
1082 mask->basic.n_proto = cpu_to_be16(0);
1083 }
1084}
1085
faa3ffce
OG		 1086static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1087 u32 *dissector_key, u32 *dissector_mask,
1088 u32 flower_flag_bit, u32 dissector_flag_bit)
1089{
1090 if (flower_mask & flower_flag_bit) {
1091 *dissector_mask |= dissector_flag_bit;
1092 if (flower_key & flower_flag_bit)
1093 *dissector_key |= dissector_flag_bit;
1094 }
1095}
1096
e304e21a
GN		 1097static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1098 u32 *flags_mask, struct netlink_ext_ack *extack)
faa3ffce
OG		 1099{
1100 u32 key, mask;
1101
d9724772 1102 /* mask is mandatory for flags */
e304e21a
GN		 1103 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1104 NL_SET_ERR_MSG(extack, "Missing flags mask");
d9724772 1105 return -EINVAL;
e304e21a 1106 }
faa3ffce 1107
abee13f5
VO		 1108 key = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS]));
1109 mask = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 1110
1111 *flags_key = 0;
1112 *flags_mask = 0;
1113
1114 fl_set_key_flag(key, mask, flags_key, flags_mask,
1115 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 1116 fl_set_key_flag(key, mask, flags_key, flags_mask,
1117 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1118 FLOW_DIS_FIRST_FRAG);
d9724772
OG		 1119
1120 return 0;
faa3ffce
OG		 1121}
1122
0e2c17b6 1123static void fl_set_key_ip(struct nlattr **tb, bool encap,
4d80cc0a
OG		 1124 struct flow_dissector_key_ip *key,
1125 struct flow_dissector_key_ip *mask)
1126{
0e2c17b6
OG		 1127 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1128 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1129 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1130 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
4d80cc0a 1131
0e2c17b6
OG		 1132 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1133 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
4d80cc0a
OG		 1134}
1135
0a6e7778
PJV		 1136static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1137 int depth, int option_len,
1138 struct netlink_ext_ack *extack)
1139{
1140 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1141 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1142 struct geneve_opt *opt;
1143 int err, data_len = 0;
1144
1145 if (option_len > sizeof(struct geneve_opt))
1146 data_len = option_len - sizeof(struct geneve_opt);
1147
1148 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1149 memset(opt, 0xff, option_len);
1150 opt->length = data_len / 4;
1151 opt->r1 = 0;
1152 opt->r2 = 0;
1153 opt->r3 = 0;
1154
1155 /* If no mask has been prodived we assume an exact match. */
1156 if (!depth)
1157 return sizeof(struct geneve_opt) + data_len;
1158
1159 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1160 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1161 return -EINVAL;
1162 }
1163
8cb08174
JB		 1164 err = nla_parse_nested_deprecated(tb,
1165 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1166 nla, geneve_opt_policy, extack);
0a6e7778
PJV		 1167 if (err < 0)
1168 return err;
1169
1170 /* We are not allowed to omit any of CLASS, TYPE or DATA
1171 * fields from the key.
1172 */
1173 if (!option_len &&
1174 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1175 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1176 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1177 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1178 return -EINVAL;
1179 }
1180
1181 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1182 * for the mask.
1183 */
1184 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1185 int new_len = key->enc_opts.len;
1186
1187 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1188 data_len = nla_len(data);
1189 if (data_len < 4) {
1190 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1191 return -ERANGE;
1192 }
1193 if (data_len % 4) {
1194 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1195 return -ERANGE;
1196 }
1197
1198 new_len += sizeof(struct geneve_opt) + data_len;
1199 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1200 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1201 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1202 return -ERANGE;
1203 }
1204 opt->length = data_len / 4;
1205 memcpy(opt->opt_data, nla_data(data), data_len);
1206 }
1207
1208 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1209 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1210 opt->opt_class = nla_get_be16(class);
1211 }
1212
1213 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1214 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1215 opt->type = nla_get_u8(type);
1216 }
1217
1218 return sizeof(struct geneve_opt) + data_len;
1219}
1220
d8f9dfae
XL		 1221static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1222 int depth, int option_len,
1223 struct netlink_ext_ack *extack)
1224{
1225 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1226 struct vxlan_metadata *md;
1227 int err;
1228
1229 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1230 memset(md, 0xff, sizeof(*md));
1231
1232 if (!depth)
1233 return sizeof(*md);
1234
1235 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1236 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1237 return -EINVAL;
1238 }
1239
1240 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1241 vxlan_opt_policy, extack);
1242 if (err < 0)
1243 return err;
1244
1245 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1246 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1247 return -EINVAL;
1248 }
1249
13e6ce98 1250 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
d8f9dfae 1251 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
13e6ce98
XL		 1252 md->gbp &= VXLAN_GBP_MASK;
1253 }
d8f9dfae
XL		 1254
1255 return sizeof(*md);
1256}
1257
79b1011c
XL		 1258static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1259 int depth, int option_len,
1260 struct netlink_ext_ack *extack)
1261{
1262 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1263 struct erspan_metadata *md;
1264 int err;
1265
1266 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1267 memset(md, 0xff, sizeof(*md));
1268 md->version = 1;
1269
1270 if (!depth)
1271 return sizeof(*md);
1272
1273 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1274 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1275 return -EINVAL;
1276 }
1277
1278 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1279 erspan_opt_policy, extack);
1280 if (err < 0)
1281 return err;
1282
1283 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1284 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1285 return -EINVAL;
1286 }
1287
1288 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1289 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1290
1291 if (md->version == 1) {
1292 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1293 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1294 return -EINVAL;
1295 }
1296 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1297 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
8e1b3ac4 1298 memset(&md->u, 0x00, sizeof(md->u));
79b1011c
XL		 1299 md->u.index = nla_get_be32(nla);
1300 }
1301 } else if (md->version == 2) {
1302 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1303 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1304 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1305 return -EINVAL;
1306 }
1307 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1308 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1309 md->u.md2.dir = nla_get_u8(nla);
1310 }
1311 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1312 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1313 set_hwid(&md->u.md2, nla_get_u8(nla));
1314 }
1315 } else {
1316 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1317 return -EINVAL;
1318 }
1319
1320 return sizeof(*md);
1321}
1322
e3acda7a
WD		 1323static int fl_set_gtp_opt(const struct nlattr *nla, struct fl_flow_key *key,
1324 int depth, int option_len,
1325 struct netlink_ext_ack *extack)
1326{
1327 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1];
1328 struct gtp_pdu_session_info *sinfo;
1329 u8 len = key->enc_opts.len;
1330 int err;
1331
1332 sinfo = (struct gtp_pdu_session_info *)&key->enc_opts.data[len];
1333 memset(sinfo, 0xff, option_len);
1334
1335 if (!depth)
1336 return sizeof(*sinfo);
1337
1338 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GTP) {
1339 NL_SET_ERR_MSG_MOD(extack, "Non-gtp option type for mask");
1340 return -EINVAL;
1341 }
1342
1343 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GTP_MAX, nla,
1344 gtp_opt_policy, extack);
1345 if (err < 0)
1346 return err;
1347
1348 if (!option_len &&
1349 (!tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] ||
1350 !tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])) {
1351 NL_SET_ERR_MSG_MOD(extack,
1352 "Missing tunnel key gtp option pdu type or qfi");
1353 return -EINVAL;
1354 }
1355
1356 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE])
1357 sinfo->pdu_type =
1358 nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE]);
1359
1360 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])
1361 sinfo->qfi = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI]);
1362
1363 return sizeof(*sinfo);
1364}
1365
0a6e7778
PJV		 1366static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1367 struct fl_flow_key *mask,
1368 struct netlink_ext_ack *extack)
1369{
1370 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
63c82997
JK		 1371 int err, option_len, key_depth, msk_depth = 0;
1372
8cb08174
JB		 1373 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1374 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1375 enc_opts_policy, extack);
63c82997
JK		 1376 if (err)
1377 return err;
0a6e7778
PJV		 1378
1379 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1380
1381 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
8cb08174
JB		 1382 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1383 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1384 enc_opts_policy, extack);
63c82997
JK		 1385 if (err)
1386 return err;
1387
0a6e7778
PJV		 1388 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1389 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
c96adff9
CW		 1390 if (!nla_ok(nla_opt_msk, msk_depth)) {
1391 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1392 return -EINVAL;
1393 }
0a6e7778
PJV		 1394 }
1395
1396 nla_for_each_attr(nla_opt_key, nla_enc_key,
1397 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1398 switch (nla_type(nla_opt_key)) {
1399 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
d8f9dfae
XL		 1400 if (key->enc_opts.dst_opt_type &&
1401 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1402 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1403 return -EINVAL;
1404 }
0a6e7778
PJV		 1405 option_len = 0;
1406 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1407 option_len = fl_set_geneve_opt(nla_opt_key, key,
1408 key_depth, option_len,
1409 extack);
1410 if (option_len < 0)
1411 return option_len;
1412
1413 key->enc_opts.len += option_len;
1414 /* At the same time we need to parse through the mask
1415 * in order to verify exact and mask attribute lengths.
1416 */
1417 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1418 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1419 msk_depth, option_len,
1420 extack);
1421 if (option_len < 0)
1422 return option_len;
1423
1424 mask->enc_opts.len += option_len;
1425 if (key->enc_opts.len != mask->enc_opts.len) {
1426 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1427 return -EINVAL;
1428 }
d8f9dfae
XL		 1429 break;
1430 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1431 if (key->enc_opts.dst_opt_type) {
1432 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1433 return -EINVAL;
1434 }
1435 option_len = 0;
1436 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1437 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1438 key_depth, option_len,
1439 extack);
1440 if (option_len < 0)
1441 return option_len;
1442
1443 key->enc_opts.len += option_len;
1444 /* At the same time we need to parse through the mask
1445 * in order to verify exact and mask attribute lengths.
1446 */
1447 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1448 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1449 msk_depth, option_len,
1450 extack);
1451 if (option_len < 0)
1452 return option_len;
1453
1454 mask->enc_opts.len += option_len;
1455 if (key->enc_opts.len != mask->enc_opts.len) {
1456 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1457 return -EINVAL;
1458 }
79b1011c
XL		 1459 break;
1460 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1461 if (key->enc_opts.dst_opt_type) {
1462 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1463 return -EINVAL;
1464 }
1465 option_len = 0;
1466 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1467 option_len = fl_set_erspan_opt(nla_opt_key, key,
1468 key_depth, option_len,
1469 extack);
1470 if (option_len < 0)
1471 return option_len;
1472
1473 key->enc_opts.len += option_len;
1474 /* At the same time we need to parse through the mask
1475 * in order to verify exact and mask attribute lengths.
1476 */
1477 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1478 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1479 msk_depth, option_len,
1480 extack);
1481 if (option_len < 0)
1482 return option_len;
1483
1484 mask->enc_opts.len += option_len;
1485 if (key->enc_opts.len != mask->enc_opts.len) {
1486 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1487 return -EINVAL;
1488 }
0a6e7778 1489 break;
e3acda7a
WD		 1490 case TCA_FLOWER_KEY_ENC_OPTS_GTP:
1491 if (key->enc_opts.dst_opt_type) {
1492 NL_SET_ERR_MSG_MOD(extack,
1493 "Duplicate type for gtp options");
1494 return -EINVAL;
1495 }
1496 option_len = 0;
1497 key->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1498 option_len = fl_set_gtp_opt(nla_opt_key, key,
1499 key_depth, option_len,
1500 extack);
1501 if (option_len < 0)
1502 return option_len;
1503
1504 key->enc_opts.len += option_len;
1505 /* At the same time we need to parse through the mask
1506 * in order to verify exact and mask attribute lengths.
1507 */
1508 mask->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1509 option_len = fl_set_gtp_opt(nla_opt_msk, mask,
1510 msk_depth, option_len,
1511 extack);
1512 if (option_len < 0)
1513 return option_len;
1514
1515 mask->enc_opts.len += option_len;
1516 if (key->enc_opts.len != mask->enc_opts.len) {
1517 NL_SET_ERR_MSG_MOD(extack,
1518 "Key and mask miss aligned");
1519 return -EINVAL;
1520 }
1521 break;
0a6e7778
PJV		 1522 default:
1523 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1524 return -EINVAL;
1525 }
c96adff9
CW		 1526
1527 if (!msk_depth)
1528 continue;
1529
1530 if (!nla_ok(nla_opt_msk, msk_depth)) {
1531 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1532 return -EINVAL;
1533 }
1534 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
0a6e7778
PJV		 1535 }
1536
1537 return 0;
1538}
1539
1bcc51ac 1540static int fl_validate_ct_state(u16 state, struct nlattr *tb,
1541 struct netlink_ext_ack *extack)
1542{
1543 if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
1544 NL_SET_ERR_MSG_ATTR(extack, tb,
1545 "no trk, so no other flag can be set");
1546 return -EINVAL;
1547 }
1548
1549 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1550 state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
1551 NL_SET_ERR_MSG_ATTR(extack, tb,
1552 "new and est are mutually exclusive");
1553 return -EINVAL;
1554 }
1555
3aed8b63 1556 if (state & TCA_FLOWER_KEY_CT_FLAGS_INVALID &&
1557 state & ~(TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
1558 TCA_FLOWER_KEY_CT_FLAGS_INVALID)) {
1559 NL_SET_ERR_MSG_ATTR(extack, tb,
1560 "when inv is set, only trk may be set");
1561 return -EINVAL;
1562 }
1563
1564 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1565 state & TCA_FLOWER_KEY_CT_FLAGS_REPLY) {
1566 NL_SET_ERR_MSG_ATTR(extack, tb,
1567 "new and rpl are mutually exclusive");
1568 return -EINVAL;
1569 }
1570
1bcc51ac 1571 return 0;
1572}
1573
e0ace68a
PB		 1574static int fl_set_key_ct(struct nlattr **tb,
1575 struct flow_dissector_key_ct *key,
1576 struct flow_dissector_key_ct *mask,
1577 struct netlink_ext_ack *extack)
1578{
1579 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1bcc51ac 1580 int err;
1581
e0ace68a
PB		 1582 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1583 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1584 return -EOPNOTSUPP;
1585 }
1586 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1587 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1588 sizeof(key->ct_state));
1bcc51ac 1589
afa536d8 1590 err = fl_validate_ct_state(key->ct_state & mask->ct_state,
1bcc51ac 1591 tb[TCA_FLOWER_KEY_CT_STATE_MASK],
1592 extack);
1593 if (err)
1594 return err;
1595
e0ace68a
PB		 1596 }
1597 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1598 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1599 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1600 return -EOPNOTSUPP;
1601 }
1602 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1603 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1604 sizeof(key->ct_zone));
1605 }
1606 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1607 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1608 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1609 return -EOPNOTSUPP;
1610 }
1611 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1612 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1613 sizeof(key->ct_mark));
1614 }
1615 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1616 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1617 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1618 return -EOPNOTSUPP;
1619 }
1620 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1621 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1622 sizeof(key->ct_labels));
1623 }
1624
1625 return 0;
1626}
1627
285ba06b 1628static bool is_vlan_key(struct nlattr *tb, __be16 *ethertype,
99fdb22b
BS		 1629 struct fl_flow_key *key, struct fl_flow_key *mask,
1630 int vthresh)
285ba06b 1631{
99fdb22b
BS		 1632 const bool good_num_of_vlans = key->num_of_vlans.num_of_vlans > vthresh;
1633
1634 if (!tb) {
1635 *ethertype = 0;
1636 return good_num_of_vlans;
1637 }
285ba06b
BS		 1638
1639 *ethertype = nla_get_be16(tb);
99fdb22b 1640 if (good_num_of_vlans || eth_type_vlan(*ethertype))
285ba06b
BS		 1641 return true;
1642
1643 key->basic.n_proto = *ethertype;
1644 mask->basic.n_proto = cpu_to_be16(~0);
1645 return false;
1646}
1647
77b9900e 1648static int fl_set_key(struct net *net, struct nlattr **tb,
1057c55f
AA		 1649 struct fl_flow_key *key, struct fl_flow_key *mask,
1650 struct netlink_ext_ack *extack)
77b9900e 1651{
9399ae9a 1652 __be16 ethertype;
d9724772 1653 int ret = 0;
a5148626 1654
77b9900e 1655 if (tb[TCA_FLOWER_INDEV]) {
1057c55f 1656 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
77b9900e
JP		 1657 if (err < 0)
1658 return err;
8212ed77
JP		 1659 key->meta.ingress_ifindex = err;
1660 mask->meta.ingress_ifindex = 0xffffffff;
77b9900e
JP		 1661 }
1662
1663 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1664 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1665 sizeof(key->eth.dst));
1666 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1667 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1668 sizeof(key->eth.src));
b4000312
BS		 1669 fl_set_key_val(tb, &key->num_of_vlans,
1670 TCA_FLOWER_KEY_NUM_OF_VLANS,
1671 &mask->num_of_vlans,
1672 TCA_FLOWER_UNSPEC,
1673 sizeof(key->num_of_vlans));
66530bdf 1674
99fdb22b 1675 if (is_vlan_key(tb[TCA_FLOWER_KEY_ETH_TYPE], &ethertype, key, mask, 0)) {
6ee59e55
BS		 1676 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1677 TCA_FLOWER_KEY_VLAN_PRIO,
1678 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1679 &key->vlan, &mask->vlan);
1680
99fdb22b
BS		 1681 if (is_vlan_key(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE],
1682 &ethertype, key, mask, 1)) {
6ee59e55
BS		 1683 fl_set_key_vlan(tb, ethertype,
1684 TCA_FLOWER_KEY_CVLAN_ID,
1685 TCA_FLOWER_KEY_CVLAN_PRIO,
1686 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1687 &key->cvlan, &mask->cvlan);
1688 fl_set_key_val(tb, &key->basic.n_proto,
1689 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1690 &mask->basic.n_proto,
1691 TCA_FLOWER_UNSPEC,
1692 sizeof(key->basic.n_proto));
1693 }
9399ae9a 1694 }
66530bdf 1695
5008750e
WD		 1696 if (key->basic.n_proto == htons(ETH_P_PPP_SES))
1697 fl_set_key_pppoe(tb, &key->pppoe, &mask->pppoe, key, mask);
1698
77b9900e
JP		 1699 if (key->basic.n_proto == htons(ETH_P_IP) ||
1700 key->basic.n_proto == htons(ETH_P_IPV6)) {
1701 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1702 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1703 sizeof(key->basic.ip_proto));
0e2c17b6 1704 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
77b9900e 1705 }
66530bdf
JHS		 1706
1707 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1708 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1709 mask->control.addr_type = ~0;
77b9900e
JP		 1710 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1711 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1712 sizeof(key->ipv4.src));
1713 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1714 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1715 sizeof(key->ipv4.dst));
66530bdf
JHS		 1716 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1717 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1718 mask->control.addr_type = ~0;
77b9900e
JP		 1719 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1720 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1721 sizeof(key->ipv6.src));
1722 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1723 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1724 sizeof(key->ipv6.dst));
1725 }
66530bdf 1726
77b9900e
JP		 1727 if (key->basic.ip_proto == IPPROTO_TCP) {
1728 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1729 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1730 sizeof(key->tp.src));
1731 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1732 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 1733 sizeof(key->tp.dst));
fdfc7dd6
JP		 1734 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1735 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1736 sizeof(key->tcp.flags));
77b9900e
JP		 1737 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1738 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1739 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1740 sizeof(key->tp.src));
1741 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1742 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 1743 sizeof(key->tp.dst));
5976c5f4
SH		 1744 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1745 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1746 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1747 sizeof(key->tp.src));
1748 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1749 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1750 sizeof(key->tp.dst));
7b684884
SH		 1751 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1752 key->basic.ip_proto == IPPROTO_ICMP) {
1753 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1754 &mask->icmp.type,
1755 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1756 sizeof(key->icmp.type));
1757 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1758 &mask->icmp.code,
1759 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1760 sizeof(key->icmp.code));
1761 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1762 key->basic.ip_proto == IPPROTO_ICMPV6) {
1763 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1764 &mask->icmp.type,
1765 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1766 sizeof(key->icmp.type));
040587af 1767 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 1768 &mask->icmp.code,
040587af 1769 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 1770 sizeof(key->icmp.code));
a577d8f7
BL		 1771 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1772 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
442f730e 1773 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1a7fca63
BL		 1774 if (ret)
1775 return ret;
99d31326
SH		 1776 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1777 key->basic.n_proto == htons(ETH_P_RARP)) {
1778 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1779 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1780 sizeof(key->arp.sip));
1781 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1782 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1783 sizeof(key->arp.tip));
1784 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1785 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1786 sizeof(key->arp.op));
1787 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1788 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1789 sizeof(key->arp.sha));
1790 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1791 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1792 sizeof(key->arp.tha));
77b9900e
JP		 1793 }
1794
5c72299f
AN		 1795 if (key->basic.ip_proto == IPPROTO_TCP ||
1796 key->basic.ip_proto == IPPROTO_UDP ||
1797 key->basic.ip_proto == IPPROTO_SCTP) {
bd7d4c12 1798 ret = fl_set_key_port_range(tb, key, mask, extack);
5c72299f
AN		 1799 if (ret)
1800 return ret;
1801 }
1802
bc3103f1
AV		 1803 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1804 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1805 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1806 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1807 fl_set_key_val(tb, &key->enc_ipv4.src,
1808 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1809 &mask->enc_ipv4.src,
1810 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1811 sizeof(key->enc_ipv4.src));
1812 fl_set_key_val(tb, &key->enc_ipv4.dst,
1813 TCA_FLOWER_KEY_ENC_IPV4_DST,
1814 &mask->enc_ipv4.dst,
1815 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1816 sizeof(key->enc_ipv4.dst));
1817 }
1818
1819 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1820 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1821 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1822 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1823 fl_set_key_val(tb, &key->enc_ipv6.src,
1824 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1825 &mask->enc_ipv6.src,
1826 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1827 sizeof(key->enc_ipv6.src));
1828 fl_set_key_val(tb, &key->enc_ipv6.dst,
1829 TCA_FLOWER_KEY_ENC_IPV6_DST,
1830 &mask->enc_ipv6.dst,
1831 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1832 sizeof(key->enc_ipv6.dst));
1833 }
1834
1835 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1836 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 1837 sizeof(key->enc_key_id.keyid));
1838
f4d997fd
HHZ		 1839 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1840 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1841 sizeof(key->enc_tp.src));
1842
1843 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1844 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1845 sizeof(key->enc_tp.dst));
1846
0e2c17b6
OG		 1847 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1848
5923b8f7
AL		 1849 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1850 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1851 sizeof(key->hash.hash));
1852
0a6e7778
PJV		 1853 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1854 ret = fl_set_enc_opt(tb, key, mask, extack);
1855 if (ret)
1856 return ret;
1857 }
1858
e0ace68a
PB		 1859 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1860 if (ret)
1861 return ret;
1862
d9724772 1863 if (tb[TCA_FLOWER_KEY_FLAGS])
e304e21a
GN		 1864 ret = fl_set_key_flags(tb, &key->control.flags,
1865 &mask->control.flags, extack);
faa3ffce 1866
d9724772 1867 return ret;
77b9900e
JP		 1868}
1869
05cd271f
PB		 1870static void fl_mask_copy(struct fl_flow_mask *dst,
1871 struct fl_flow_mask *src)
77b9900e 1872{
05cd271f
PB		 1873 const void *psrc = fl_key_get_start(&src->key, src);
1874 void *pdst = fl_key_get_start(&dst->key, src);
77b9900e 1875
05cd271f
PB		 1876 memcpy(pdst, psrc, fl_mask_range(src));
1877 dst->range = src->range;
77b9900e
JP		 1878}
1879
1880static const struct rhashtable_params fl_ht_params = {
1881 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1882 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1883 .automatic_shrinking = true,
1884};
1885
05cd271f 1886static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
77b9900e 1887{
05cd271f
PB		 1888 mask->filter_ht_params = fl_ht_params;
1889 mask->filter_ht_params.key_len = fl_mask_range(mask);
1890 mask->filter_ht_params.key_offset += mask->range.start;
77b9900e 1891
05cd271f 1892 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
77b9900e
JP		 1893}
1894
1895#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
c593642c 1896#define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
77b9900e 1897
339ba878
HHZ		 1898#define FL_KEY_IS_MASKED(mask, member) \
1899 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1900 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 1901
1902#define FL_KEY_SET(keys, cnt, id, member) \
1903 do { \
1904 keys[cnt].key_id = id; \
1905 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1906 cnt++; \
1907 } while(0);
1908
339ba878 1909#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 1910 do { \
339ba878 1911 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 1912 FL_KEY_SET(keys, cnt, id, member); \
1913 } while(0);
1914
33fb5cba
JP		 1915static void fl_init_dissector(struct flow_dissector *dissector,
1916 struct fl_flow_key *mask)
77b9900e
JP		 1917{
1918 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1919 size_t cnt = 0;
1920
8212ed77
JP		 1921 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1922 FLOW_DISSECTOR_KEY_META, meta);
42aecaa9 1923 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 1924 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
33fb5cba 1925 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1926 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
33fb5cba 1927 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1928 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
33fb5cba 1929 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1930 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
8ffb055b
YK		 1931 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1932 FLOW_DISSECTOR_KEY_PORTS, tp);
1933 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1934 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
33fb5cba 1935 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
4d80cc0a 1936 FLOW_DISSECTOR_KEY_IP, ip);
33fb5cba 1937 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
fdfc7dd6 1938 FLOW_DISSECTOR_KEY_TCP, tcp);
33fb5cba 1939 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
7b684884 1940 FLOW_DISSECTOR_KEY_ICMP, icmp);
33fb5cba 1941 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
99d31326 1942 FLOW_DISSECTOR_KEY_ARP, arp);
33fb5cba 1943 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
a577d8f7 1944 FLOW_DISSECTOR_KEY_MPLS, mpls);
33fb5cba 1945 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
9399ae9a 1946 FLOW_DISSECTOR_KEY_VLAN, vlan);
33fb5cba 1947 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
d64efd09 1948 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
33fb5cba 1949 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1950 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
33fb5cba 1951 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1952 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
33fb5cba 1953 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1954 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
33fb5cba
JP		 1955 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1956 FL_KEY_IS_MASKED(mask, enc_ipv6))
519d1052
HHZ		 1957 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1958 enc_control);
33fb5cba 1959 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
f4d997fd 1960 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
33fb5cba 1961 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
0e2c17b6 1962 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
0a6e7778
PJV		 1963 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1964 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
e0ace68a
PB		 1965 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1966 FLOW_DISSECTOR_KEY_CT, ct);
5923b8f7
AL		 1967 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1968 FLOW_DISSECTOR_KEY_HASH, hash);
b4000312
BS		 1969 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1970 FLOW_DISSECTOR_KEY_NUM_OF_VLANS, num_of_vlans);
5008750e
WD		 1971 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1972 FLOW_DISSECTOR_KEY_PPPOE, pppoe);
77b9900e 1973
33fb5cba 1974 skb_flow_dissector_init(dissector, keys, cnt);
05cd271f
PB		 1975}
1976
1977static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1978 struct fl_flow_mask *mask)
1979{
1980 struct fl_flow_mask *newmask;
1981 int err;
1982
1983 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1984 if (!newmask)
1985 return ERR_PTR(-ENOMEM);
1986
1987 fl_mask_copy(newmask, mask);
1988
8ffb055b
YK		 1989 if ((newmask->key.tp_range.tp_min.dst &&
1990 newmask->key.tp_range.tp_max.dst) ||
1991 (newmask->key.tp_range.tp_min.src &&
1992 newmask->key.tp_range.tp_max.src))
5c72299f
AN		 1993 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1994
05cd271f
PB		 1995 err = fl_init_mask_hashtable(newmask);
1996 if (err)
1997 goto errout_free;
1998
33fb5cba 1999 fl_init_dissector(&newmask->dissector, &newmask->key);
05cd271f
PB		 2000
2001 INIT_LIST_HEAD_RCU(&newmask->filters);
2002
f48ef4d5 2003 refcount_set(&newmask->refcnt, 1);
195c234d
VB		 2004 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
2005 &newmask->ht_node, mask_ht_params);
05cd271f
PB		 2006 if (err)
2007 goto errout_destroy;
2008
259e60f9 2009 spin_lock(&head->masks_lock);
05cd271f 2010 list_add_tail_rcu(&newmask->list, &head->masks);
259e60f9 2011 spin_unlock(&head->masks_lock);
05cd271f
PB		 2012
2013 return newmask;
2014
2015errout_destroy:
2016 rhashtable_destroy(&newmask->ht);
2017errout_free:
2018 kfree(newmask);
2019
2020 return ERR_PTR(err);
77b9900e
JP		 2021}
2022
2023static int fl_check_assign_mask(struct cls_fl_head *head,
05cd271f
PB		 2024 struct cls_fl_filter *fnew,
2025 struct cls_fl_filter *fold,
77b9900e
JP		 2026 struct fl_flow_mask *mask)
2027{
05cd271f 2028 struct fl_flow_mask *newmask;
f48ef4d5 2029 int ret = 0;
77b9900e 2030
f48ef4d5 2031 rcu_read_lock();
195c234d
VB		 2032
2033 /* Insert mask as temporary node to prevent concurrent creation of mask
2034 * with same key. Any concurrent lookups with same key will return
99815f50 2035 * -EAGAIN because mask's refcnt is zero.
195c234d
VB		 2036 */
2037 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
2038 &mask->ht_node,
2039 mask_ht_params);
05cd271f 2040 if (!fnew->mask) {
f48ef4d5
VB		 2041 rcu_read_unlock();
2042
195c234d
VB		 2043 if (fold) {
2044 ret = -EINVAL;
2045 goto errout_cleanup;
2046 }
77b9900e 2047
05cd271f 2048 newmask = fl_create_new_mask(head, mask);
195c234d
VB		 2049 if (IS_ERR(newmask)) {
2050 ret = PTR_ERR(newmask);
2051 goto errout_cleanup;
2052 }
77b9900e 2053
05cd271f 2054 fnew->mask = newmask;
f48ef4d5 2055 return 0;
195c234d
VB		 2056 } else if (IS_ERR(fnew->mask)) {
2057 ret = PTR_ERR(fnew->mask);
f6521c58 2058 } else if (fold && fold->mask != fnew->mask) {
f48ef4d5
VB		 2059 ret = -EINVAL;
2060 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
2061 /* Mask was deleted concurrently, try again */
2062 ret = -EAGAIN;
05cd271f 2063 }
f48ef4d5
VB		 2064 rcu_read_unlock();
2065 return ret;
195c234d
VB		 2066
2067errout_cleanup:
2068 rhashtable_remove_fast(&head->ht, &mask->ht_node,
2069 mask_ht_params);
195c234d 2070 return ret;
77b9900e
JP		 2071}
2072
2073static int fl_set_parms(struct net *net, struct tcf_proto *tp,
2074 struct cls_fl_filter *f, struct fl_flow_mask *mask,
2075 unsigned long base, struct nlattr **tb,
695176bf 2076 struct nlattr *est,
c86e0209
BZ		 2077 struct fl_flow_tmplt *tmplt,
2078 u32 flags, u32 fl_flags,
50a56190 2079 struct netlink_ext_ack *extack)
77b9900e 2080{
77b9900e
JP		 2081 int err;
2082
c86e0209
BZ		 2083 err = tcf_exts_validate_ex(net, tp, tb, est, &f->exts, flags,
2084 fl_flags, extack);
77b9900e
JP		 2085 if (err < 0)
2086 return err;
2087
2088 if (tb[TCA_FLOWER_CLASSID]) {
2089 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
695176bf 2090 if (flags & TCA_ACT_FLAGS_NO_RTNL)
c24e43d8 2091 rtnl_lock();
77b9900e 2092 tcf_bind_filter(tp, &f->res, base);
695176bf 2093 if (flags & TCA_ACT_FLAGS_NO_RTNL)
c24e43d8 2094 rtnl_unlock();
77b9900e
JP		 2095 }
2096
1057c55f 2097 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
77b9900e 2098 if (err)
45507529 2099 return err;
77b9900e
JP		 2100
2101 fl_mask_update_range(mask);
2102 fl_set_masked_key(&f->mkey, &f->key, mask);
2103
b95ec7eb
JP		 2104 if (!fl_mask_fits_tmplt(tmplt, mask)) {
2105 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
2106 return -EINVAL;
2107 }
2108
77b9900e 2109 return 0;
77b9900e
JP		 2110}
2111
1f17f774
VB		 2112static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
2113 struct cls_fl_filter *fold,
2114 bool *in_ht)
2115{
2116 struct fl_flow_mask *mask = fnew->mask;
2117 int err;
2118
9e35552a
VB		 2119 err = rhashtable_lookup_insert_fast(&mask->ht,
2120 &fnew->ht_node,
2121 mask->filter_ht_params);
1f17f774
VB		 2122 if (err) {
2123 *in_ht = false;
2124 /* It is okay if filter with same key exists when
2125 * overwriting.
2126 */
2127 return fold && err == -EEXIST ? 0 : err;
2128 }
2129
2130 *in_ht = true;
2131 return 0;
2132}
2133
77b9900e
JP		 2134static int fl_change(struct net *net, struct sk_buff *in_skb,
2135 struct tcf_proto *tp, unsigned long base,
2136 u32 handle, struct nlattr **tca,
695176bf 2137 void **arg, u32 flags,
12db03b6 2138 struct netlink_ext_ack *extack)
77b9900e 2139{
e474619a 2140 struct cls_fl_head *head = fl_head_dereference(tp);
695176bf 2141 bool rtnl_held = !(flags & TCA_ACT_FLAGS_NO_RTNL);
8113c095 2142 struct cls_fl_filter *fold = *arg;
77b9900e 2143 struct cls_fl_filter *fnew;
2cddd201 2144 struct fl_flow_mask *mask;
39b7b6a6 2145 struct nlattr **tb;
1f17f774 2146 bool in_ht;
77b9900e
JP		 2147 int err;
2148
06177558
VB		 2149 if (!tca[TCA_OPTIONS]) {
2150 err = -EINVAL;
2151 goto errout_fold;
2152 }
77b9900e 2153
2cddd201 2154 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
06177558
VB		 2155 if (!mask) {
2156 err = -ENOBUFS;
2157 goto errout_fold;
2158 }
39b7b6a6 2159
2cddd201
IV		 2160 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2161 if (!tb) {
2162 err = -ENOBUFS;
2163 goto errout_mask_alloc;
2164 }
2165
8cb08174
JB		 2166 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2167 tca[TCA_OPTIONS], fl_policy, NULL);
77b9900e 2168 if (err < 0)
39b7b6a6 2169 goto errout_tb;
77b9900e 2170
39b7b6a6
AB		 2171 if (fold && handle && fold->handle != handle) {
2172 err = -EINVAL;
2173 goto errout_tb;
2174 }
77b9900e
JP		 2175
2176 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 2177 if (!fnew) {
2178 err = -ENOBUFS;
2179 goto errout_tb;
2180 }
c049d56e 2181 INIT_LIST_HEAD(&fnew->hw_list);
06177558 2182 refcount_set(&fnew->refcnt, 1);
77b9900e 2183
14215108 2184 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
b9a24bb7
WC		 2185 if (err < 0)
2186 goto errout;
77b9900e 2187
e69985c6
AV		 2188 if (tb[TCA_FLOWER_FLAGS]) {
2189 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
2190
2191 if (!tc_flags_valid(fnew->flags)) {
2192 err = -EINVAL;
ecb3dea4 2193 goto errout;
e69985c6
AV		 2194 }
2195 }
5b33f488 2196
695176bf 2197 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE],
c86e0209
BZ		 2198 tp->chain->tmplt_priv, flags, fnew->flags,
2199 extack);
77b9900e 2200 if (err)
ecb3dea4 2201 goto errout;
77b9900e 2202
2cddd201 2203 err = fl_check_assign_mask(head, fnew, fold, mask);
77b9900e 2204 if (err)
ecb3dea4
VB		 2205 goto errout;
2206
1f17f774
VB		 2207 err = fl_ht_insert_unique(fnew, fold, &in_ht);
2208 if (err)
2209 goto errout_mask;
2210
79685219 2211 if (!tc_skip_hw(fnew->flags)) {
c24e43d8 2212 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
79685219 2213 if (err)
1f17f774 2214 goto errout_ht;
79685219 2215 }
5b33f488 2216
55593960
OG		 2217 if (!tc_in_hw(fnew->flags))
2218 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2219
3d81e711
VB		 2220 spin_lock(&tp->lock);
2221
272ffaad
VB		 2222 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2223 * proto again or create new one, if necessary.
2224 */
2225 if (tp->deleting) {
2226 err = -EAGAIN;
2227 goto errout_hw;
2228 }
2229
5b33f488 2230 if (fold) {
b2552b8c
VB		 2231 /* Fold filter was deleted concurrently. Retry lookup. */
2232 if (fold->deleted) {
2233 err = -EAGAIN;
2234 goto errout_hw;
2235 }
2236
620da486
VB		 2237 fnew->handle = handle;
2238
1f17f774
VB		 2239 if (!in_ht) {
2240 struct rhashtable_params params =
2241 fnew->mask->filter_ht_params;
2242
2243 err = rhashtable_insert_fast(&fnew->mask->ht,
2244 &fnew->ht_node,
2245 params);
2246 if (err)
2247 goto errout_hw;
2248 in_ht = true;
2249 }
620da486 2250
c049d56e 2251 refcount_inc(&fnew->refcnt);
599d2570
RD		 2252 rhashtable_remove_fast(&fold->mask->ht,
2253 &fold->ht_node,
2254 fold->mask->filter_ht_params);
234a4624 2255 idr_replace(&head->handle_idr, fnew, fnew->handle);
ff3532f2 2256 list_replace_rcu(&fold->list, &fnew->list);
b2552b8c 2257 fold->deleted = true;
620da486 2258
3d81e711
VB		 2259 spin_unlock(&tp->lock);
2260
9994677c 2261 fl_mask_put(head, fold->mask);
620da486 2262 if (!tc_skip_hw(fold->flags))
c24e43d8 2263 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
77b9900e 2264 tcf_unbind_filter(tp, &fold->res);
06177558
VB		 2265 /* Caller holds reference to fold, so refcnt is always > 0
2266 * after this.
2267 */
2268 refcount_dec(&fold->refcnt);
2269 __fl_put(fold);
77b9900e 2270 } else {
620da486
VB		 2271 if (handle) {
2272 /* user specifies a handle and it doesn't exist */
2273 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2274 handle, GFP_ATOMIC);
9a2d9389
VB		 2275
2276 /* Filter with specified handle was concurrently
2277 * inserted after initial check in cls_api. This is not
2278 * necessarily an error if NLM_F_EXCL is not set in
2279 * message flags. Returning EAGAIN will cause cls_api to
2280 * try to update concurrently inserted rule.
2281 */
2282 if (err == -ENOSPC)
2283 err = -EAGAIN;
620da486
VB		 2284 } else {
2285 handle = 1;
2286 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2287 INT_MAX, GFP_ATOMIC);
2288 }
2289 if (err)
2290 goto errout_hw;
2291
c049d56e 2292 refcount_inc(&fnew->refcnt);
620da486 2293 fnew->handle = handle;
05cd271f 2294 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
3d81e711 2295 spin_unlock(&tp->lock);
77b9900e
JP		 2296 }
2297
620da486
VB		 2298 *arg = fnew;
2299
39b7b6a6 2300 kfree(tb);
99815f50 2301 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
77b9900e
JP		 2302 return 0;
2303
c049d56e
VB		 2304errout_ht:
2305 spin_lock(&tp->lock);
620da486 2306errout_hw:
c049d56e 2307 fnew->deleted = true;
3d81e711 2308 spin_unlock(&tp->lock);
620da486 2309 if (!tc_skip_hw(fnew->flags))
c24e43d8 2310 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1f17f774
VB		 2311 if (in_ht)
2312 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2313 fnew->mask->filter_ht_params);
ecb3dea4 2314errout_mask:
9994677c 2315 fl_mask_put(head, fnew->mask);
77b9900e 2316errout:
c049d56e 2317 __fl_put(fnew);
39b7b6a6
AB		 2318errout_tb:
2319 kfree(tb);
2cddd201 2320errout_mask_alloc:
99815f50 2321 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
06177558
VB		 2322errout_fold:
2323 if (fold)
2324 __fl_put(fold);
77b9900e
JP		 2325 return err;
2326}
2327
571acf21 2328static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
12db03b6 2329 bool rtnl_held, struct netlink_ext_ack *extack)
77b9900e 2330{
e474619a 2331 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 2332 struct cls_fl_filter *f = arg;
b2552b8c
VB		 2333 bool last_on_mask;
2334 int err = 0;
77b9900e 2335
c24e43d8 2336 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
05cd271f 2337 *last = list_empty(&head->masks);
06177558
VB		 2338 __fl_put(f);
2339
b2552b8c 2340 return err;
77b9900e
JP		 2341}
2342
12db03b6
VB		 2343static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2344 bool rtnl_held)
77b9900e 2345{
d39d7149
CW		 2346 struct cls_fl_head *head = fl_head_dereference(tp);
2347 unsigned long id = arg->cookie, tmp;
77b9900e 2348 struct cls_fl_filter *f;
05cd271f 2349
01683a14
VB		 2350 arg->count = arg->skip;
2351
d5ef1906 2352 rcu_read_lock();
d39d7149
CW		 2353 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2354 /* don't return filters that are being deleted */
2355 if (!refcount_inc_not_zero(&f->refcnt))
2356 continue;
d5ef1906
VB		 2357 rcu_read_unlock();
2358
01683a14 2359 if (arg->fn(tp, f, arg) < 0) {
06177558 2360 __fl_put(f);
01683a14 2361 arg->stop = 1;
d5ef1906 2362 rcu_read_lock();
01683a14 2363 break;
05cd271f 2364 }
06177558 2365 __fl_put(f);
01683a14 2366 arg->count++;
d5ef1906 2367 rcu_read_lock();
77b9900e 2368 }
d5ef1906 2369 rcu_read_unlock();
d39d7149 2370 arg->cookie = id;
77b9900e
JP		 2371}
2372
c049d56e
VB		 2373static struct cls_fl_filter *
2374fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2375{
2376 struct cls_fl_head *head = fl_head_dereference(tp);
2377
2378 spin_lock(&tp->lock);
2379 if (list_empty(&head->hw_filters)) {
2380 spin_unlock(&tp->lock);
2381 return NULL;
2382 }
2383
2384 if (!f)
2385 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2386 hw_list);
2387 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2388 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2389 spin_unlock(&tp->lock);
2390 return f;
2391 }
2392 }
2393
2394 spin_unlock(&tp->lock);
2395 return NULL;
2396}
2397
a7323311 2398static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
31533cba
JH		 2399 void *cb_priv, struct netlink_ext_ack *extack)
2400{
31533cba 2401 struct tcf_block *block = tp->chain->block;
f9e30088 2402 struct flow_cls_offload cls_flower = {};
c049d56e 2403 struct cls_fl_filter *f = NULL;
31533cba
JH		 2404 int err;
2405
c049d56e
VB		 2406 /* hw_filters list can only be changed by hw offload functions after
2407 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2408 * iterating it.
2409 */
2410 ASSERT_RTNL();
3a7b6861 2411
c049d56e 2412 while ((f = fl_get_next_hw_filter(tp, f, add))) {
95e27a4d
JH		 2413 cls_flower.rule =
2414 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2415 if (!cls_flower.rule) {
2416 __fl_put(f);
2417 return -ENOMEM;
2418 }
31533cba 2419
95e27a4d 2420 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
d6787147 2421 extack);
95e27a4d 2422 cls_flower.command = add ?
f9e30088 2423 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
95e27a4d
JH		 2424 cls_flower.cookie = (unsigned long)f;
2425 cls_flower.rule->match.dissector = &f->mask->dissector;
2426 cls_flower.rule->match.mask = &f->mask->key;
2427 cls_flower.rule->match.key = &f->mkey;
2428
c2ccf84e
IS		 2429 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
2430 cls_flower.common.extack);
95e27a4d 2431 if (err) {
8f256622 2432 kfree(cls_flower.rule);
95e27a4d 2433 if (tc_skip_sw(f->flags)) {
95e27a4d
JH		 2434 __fl_put(f);
2435 return err;
31533cba 2436 }
95e27a4d
JH		 2437 goto next_flow;
2438 }
31533cba 2439
95e27a4d
JH		 2440 cls_flower.classid = f->res.classid;
2441
40119211
VB		 2442 err = tc_setup_cb_reoffload(block, tp, add, cb,
2443 TC_SETUP_CLSFLOWER, &cls_flower,
2444 cb_priv, &f->flags,
2445 &f->in_hw_count);
9c1c0e12 2446 tc_cleanup_offload_action(&cls_flower.rule->action);
95e27a4d
JH		 2447 kfree(cls_flower.rule);
2448
2449 if (err) {
40119211
VB		 2450 __fl_put(f);
2451 return err;
31533cba 2452 }
95e27a4d 2453next_flow:
95e27a4d 2454 __fl_put(f);
31533cba
JH		 2455 }
2456
2457 return 0;
2458}
2459
a449a3e7
VB		 2460static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2461{
2462 struct flow_cls_offload *cls_flower = type_data;
2463 struct cls_fl_filter *f =
2464 (struct cls_fl_filter *) cls_flower->cookie;
2465 struct cls_fl_head *head = fl_head_dereference(tp);
2466
2467 spin_lock(&tp->lock);
2468 list_add(&f->hw_list, &head->hw_filters);
2469 spin_unlock(&tp->lock);
2470}
2471
2472static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2473{
2474 struct flow_cls_offload *cls_flower = type_data;
2475 struct cls_fl_filter *f =
2476 (struct cls_fl_filter *) cls_flower->cookie;
2477
2478 spin_lock(&tp->lock);
2479 if (!list_empty(&f->hw_list))
2480 list_del_init(&f->hw_list);
2481 spin_unlock(&tp->lock);
2482}
2483
8f256622
PNA		 2484static int fl_hw_create_tmplt(struct tcf_chain *chain,
2485 struct fl_flow_tmplt *tmplt)
34738452 2486{
f9e30088 2487 struct flow_cls_offload cls_flower = {};
34738452 2488 struct tcf_block *block = chain->block;
34738452 2489
e3ab786b 2490 cls_flower.rule = flow_rule_alloc(0);
8f256622
PNA		 2491 if (!cls_flower.rule)
2492 return -ENOMEM;
2493
34738452 2494 cls_flower.common.chain_index = chain->index;
f9e30088 2495 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
34738452 2496 cls_flower.cookie = (unsigned long) tmplt;
8f256622
PNA		 2497 cls_flower.rule->match.dissector = &tmplt->dissector;
2498 cls_flower.rule->match.mask = &tmplt->mask;
2499 cls_flower.rule->match.key = &tmplt->dummy_key;
34738452
JP		 2500
2501 /* We don't care if driver (any of them) fails to handle this
2502 * call. It serves just as a hint for it.
2503 */
40119211 2504 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
8f256622
PNA		 2505 kfree(cls_flower.rule);
2506
2507 return 0;
34738452
JP		 2508}
2509
2510static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2511 struct fl_flow_tmplt *tmplt)
2512{
f9e30088 2513 struct flow_cls_offload cls_flower = {};
34738452
JP		 2514 struct tcf_block *block = chain->block;
2515
2516 cls_flower.common.chain_index = chain->index;
f9e30088 2517 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
34738452
JP		 2518 cls_flower.cookie = (unsigned long) tmplt;
2519
40119211 2520 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
34738452
JP		 2521}
2522
b95ec7eb
JP		 2523static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2524 struct nlattr **tca,
2525 struct netlink_ext_ack *extack)
2526{
2527 struct fl_flow_tmplt *tmplt;
2528 struct nlattr **tb;
2529 int err;
2530
2531 if (!tca[TCA_OPTIONS])
2532 return ERR_PTR(-EINVAL);
2533
2534 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2535 if (!tb)
2536 return ERR_PTR(-ENOBUFS);
8cb08174
JB		 2537 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2538 tca[TCA_OPTIONS], fl_policy, NULL);
b95ec7eb
JP		 2539 if (err)
2540 goto errout_tb;
2541
2542 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1cbc36a5
DC		 2543 if (!tmplt) {
2544 err = -ENOMEM;
b95ec7eb 2545 goto errout_tb;
1cbc36a5 2546 }
b95ec7eb
JP		 2547 tmplt->chain = chain;
2548 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2549 if (err)
2550 goto errout_tmplt;
b95ec7eb
JP		 2551
2552 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2553
8f256622
PNA		 2554 err = fl_hw_create_tmplt(chain, tmplt);
2555 if (err)
2556 goto errout_tmplt;
34738452 2557
8f256622 2558 kfree(tb);
b95ec7eb
JP		 2559 return tmplt;
2560
2561errout_tmplt:
2562 kfree(tmplt);
2563errout_tb:
2564 kfree(tb);
2565 return ERR_PTR(err);
2566}
2567
ec3ed293
VB		 2568static void fl_tmplt_destroy(void *tmplt_priv)
2569{
2570 struct fl_flow_tmplt *tmplt = tmplt_priv;
2571
95278dda
CW		 2572 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2573 kfree(tmplt);
ec3ed293
VB		 2574}
2575
77b9900e
JP		 2576static int fl_dump_key_val(struct sk_buff *skb,
2577 void *val, int val_type,
2578 void *mask, int mask_type, int len)
2579{
2580 int err;
2581
2582 if (!memchr_inv(mask, 0, len))
2583 return 0;
2584 err = nla_put(skb, val_type, len, val);
2585 if (err)
2586 return err;
2587 if (mask_type != TCA_FLOWER_UNSPEC) {
2588 err = nla_put(skb, mask_type, len, mask);
2589 if (err)
2590 return err;
2591 }
2592 return 0;
2593}
2594
5c72299f
AN		 2595static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2596 struct fl_flow_key *mask)
2597{
8ffb055b
YK		 2598 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2599 TCA_FLOWER_KEY_PORT_DST_MIN,
2600 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2601 sizeof(key->tp_range.tp_min.dst)) ||
2602 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2603 TCA_FLOWER_KEY_PORT_DST_MAX,
2604 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2605 sizeof(key->tp_range.tp_max.dst)) ||
2606 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2607 TCA_FLOWER_KEY_PORT_SRC_MIN,
2608 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2609 sizeof(key->tp_range.tp_min.src)) ||
2610 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2611 TCA_FLOWER_KEY_PORT_SRC_MAX,
2612 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2613 sizeof(key->tp_range.tp_max.src)))
5c72299f
AN		 2614 return -1;
2615
2616 return 0;
2617}
2618
61aec25a
GN		 2619static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2620 struct flow_dissector_key_mpls *mpls_key,
2621 struct flow_dissector_key_mpls *mpls_mask,
2622 u8 lse_index)
2623{
2624 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2625 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2626 int err;
2627
2628 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2629 lse_index + 1);
2630 if (err)
2631 return err;
2632
2633 if (lse_mask->mpls_ttl) {
2634 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2635 lse_key->mpls_ttl);
2636 if (err)
2637 return err;
2638 }
2639 if (lse_mask->mpls_bos) {
2640 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2641 lse_key->mpls_bos);
2642 if (err)
2643 return err;
2644 }
2645 if (lse_mask->mpls_tc) {
2646 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2647 lse_key->mpls_tc);
2648 if (err)
2649 return err;
2650 }
2651 if (lse_mask->mpls_label) {
7fdd375e
GN		 2652 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2653 lse_key->mpls_label);
61aec25a
GN		 2654 if (err)
2655 return err;
2656 }
2657
2658 return 0;
2659}
2660
2661static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2662 struct flow_dissector_key_mpls *mpls_key,
2663 struct flow_dissector_key_mpls *mpls_mask)
2664{
2665 struct nlattr *opts;
2666 struct nlattr *lse;
2667 u8 lse_index;
2668 int err;
2669
2670 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2671 if (!opts)
2672 return -EMSGSIZE;
2673
2674 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2675 if (!(mpls_mask->used_lses & 1 << lse_index))
2676 continue;
2677
2678 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2679 if (!lse) {
2680 err = -EMSGSIZE;
2681 goto err_opts;
2682 }
2683
2684 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2685 lse_index);
2686 if (err)
2687 goto err_opts_lse;
2688 nla_nest_end(skb, lse);
2689 }
2690 nla_nest_end(skb, opts);
2691
2692 return 0;
2693
2694err_opts_lse:
2695 nla_nest_cancel(skb, lse);
2696err_opts:
2697 nla_nest_cancel(skb, opts);
2698
2699 return err;
2700}
2701
a577d8f7
BL		 2702static int fl_dump_key_mpls(struct sk_buff *skb,
2703 struct flow_dissector_key_mpls *mpls_key,
2704 struct flow_dissector_key_mpls *mpls_mask)
2705{
58cff782
GN		 2706 struct flow_dissector_mpls_lse *lse_mask;
2707 struct flow_dissector_mpls_lse *lse_key;
a577d8f7
BL		 2708 int err;
2709
61aec25a 2710 if (!mpls_mask->used_lses)
a577d8f7 2711 return 0;
58cff782
GN		 2712
2713 lse_mask = &mpls_mask->ls[0];
2714 lse_key = &mpls_key->ls[0];
2715
61aec25a
GN		 2716 /* For backward compatibility, don't use the MPLS nested attributes if
2717 * the rule can be expressed using the old attributes.
2718 */
2719 if (mpls_mask->used_lses & ~1 ||
2720 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2721 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2722 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2723
58cff782 2724 if (lse_mask->mpls_ttl) {
a577d8f7 2725 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
58cff782 2726 lse_key->mpls_ttl);
a577d8f7
BL		 2727 if (err)
2728 return err;
2729 }
58cff782 2730 if (lse_mask->mpls_tc) {
a577d8f7 2731 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
58cff782 2732 lse_key->mpls_tc);
a577d8f7
BL		 2733 if (err)
2734 return err;
2735 }
58cff782 2736 if (lse_mask->mpls_label) {
a577d8f7 2737 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
58cff782 2738 lse_key->mpls_label);
a577d8f7
BL		 2739 if (err)
2740 return err;
2741 }
58cff782 2742 if (lse_mask->mpls_bos) {
a577d8f7 2743 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
58cff782 2744 lse_key->mpls_bos);
a577d8f7
BL		 2745 if (err)
2746 return err;
2747 }
2748 return 0;
2749}
2750
0e2c17b6 2751static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
4d80cc0a
OG		 2752 struct flow_dissector_key_ip *key,
2753 struct flow_dissector_key_ip *mask)
2754{
0e2c17b6
OG		 2755 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2756 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2757 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2758 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2759
2760 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2761 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
4d80cc0a
OG		 2762 return -1;
2763
2764 return 0;
2765}
2766
9399ae9a 2767static int fl_dump_key_vlan(struct sk_buff *skb,
d64efd09 2768 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 2769 struct flow_dissector_key_vlan *vlan_key,
2770 struct flow_dissector_key_vlan *vlan_mask)
2771{
2772 int err;
2773
2774 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2775 return 0;
2776 if (vlan_mask->vlan_id) {
d64efd09 2777 err = nla_put_u16(skb, vlan_id_key,
9399ae9a
HHZ		 2778 vlan_key->vlan_id);
2779 if (err)
2780 return err;
2781 }
2782 if (vlan_mask->vlan_priority) {
d64efd09 2783 err = nla_put_u8(skb, vlan_prio_key,
9399ae9a
HHZ		 2784 vlan_key->vlan_priority);
2785 if (err)
2786 return err;
2787 }
2788 return 0;
2789}
2790
faa3ffce
OG		 2791static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2792 u32 *flower_key, u32 *flower_mask,
2793 u32 flower_flag_bit, u32 dissector_flag_bit)
2794{
2795 if (dissector_mask & dissector_flag_bit) {
2796 *flower_mask |= flower_flag_bit;
2797 if (dissector_key & dissector_flag_bit)
2798 *flower_key |= flower_flag_bit;
2799 }
2800}
2801
2802static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2803{
2804 u32 key, mask;
2805 __be32 _key, _mask;
2806 int err;
2807
2808 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2809 return 0;
2810
2811 key = 0;
2812 mask = 0;
2813
2814 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2815 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 2816 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2817 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2818 FLOW_DIS_FIRST_FRAG);
faa3ffce
OG		 2819
2820 _key = cpu_to_be32(key);
2821 _mask = cpu_to_be32(mask);
2822
2823 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2824 if (err)
2825 return err;
2826
2827 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2828}
2829
0a6e7778
PJV		 2830static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2831 struct flow_dissector_key_enc_opts *enc_opts)
2832{
2833 struct geneve_opt *opt;
2834 struct nlattr *nest;
2835 int opt_off = 0;
2836
ae0be8de 2837 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
0a6e7778
PJV		 2838 if (!nest)
2839 goto nla_put_failure;
2840
2841 while (enc_opts->len > opt_off) {
2842 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2843
2844 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2845 opt->opt_class))
2846 goto nla_put_failure;
2847 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2848 opt->type))
2849 goto nla_put_failure;
2850 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2851 opt->length * 4, opt->opt_data))
2852 goto nla_put_failure;
2853
2854 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2855 }
2856 nla_nest_end(skb, nest);
2857 return 0;
2858
2859nla_put_failure:
2860 nla_nest_cancel(skb, nest);
2861 return -EMSGSIZE;
2862}
2863
d8f9dfae
XL		 2864static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2865 struct flow_dissector_key_enc_opts *enc_opts)
2866{
2867 struct vxlan_metadata *md;
2868 struct nlattr *nest;
2869
2870 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2871 if (!nest)
2872 goto nla_put_failure;
2873
2874 md = (struct vxlan_metadata *)&enc_opts->data[0];
2875 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2876 goto nla_put_failure;
2877
2878 nla_nest_end(skb, nest);
2879 return 0;
2880
2881nla_put_failure:
2882 nla_nest_cancel(skb, nest);
2883 return -EMSGSIZE;
2884}
2885
79b1011c
XL		 2886static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2887 struct flow_dissector_key_enc_opts *enc_opts)
2888{
2889 struct erspan_metadata *md;
2890 struct nlattr *nest;
2891
2892 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2893 if (!nest)
2894 goto nla_put_failure;
2895
2896 md = (struct erspan_metadata *)&enc_opts->data[0];
2897 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2898 goto nla_put_failure;
2899
2900 if (md->version == 1 &&
2901 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2902 goto nla_put_failure;
2903
2904 if (md->version == 2 &&
2905 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2906 md->u.md2.dir) ||
2907 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2908 get_hwid(&md->u.md2))))
2909 goto nla_put_failure;
2910
2911 nla_nest_end(skb, nest);
2912 return 0;
2913
2914nla_put_failure:
2915 nla_nest_cancel(skb, nest);
2916 return -EMSGSIZE;
2917}
2918
e3acda7a
WD		 2919static int fl_dump_key_gtp_opt(struct sk_buff *skb,
2920 struct flow_dissector_key_enc_opts *enc_opts)
2921
2922{
2923 struct gtp_pdu_session_info *session_info;
2924 struct nlattr *nest;
2925
2926 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GTP);
2927 if (!nest)
2928 goto nla_put_failure;
2929
2930 session_info = (struct gtp_pdu_session_info *)&enc_opts->data[0];
2931
2932 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE,
2933 session_info->pdu_type))
2934 goto nla_put_failure;
2935
2936 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_QFI, session_info->qfi))
2937 goto nla_put_failure;
2938
2939 nla_nest_end(skb, nest);
2940 return 0;
2941
2942nla_put_failure:
2943 nla_nest_cancel(skb, nest);
2944 return -EMSGSIZE;
2945}
2946
e0ace68a
PB		 2947static int fl_dump_key_ct(struct sk_buff *skb,
2948 struct flow_dissector_key_ct *key,
2949 struct flow_dissector_key_ct *mask)
2950{
2951 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2952 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2953 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2954 sizeof(key->ct_state)))
2955 goto nla_put_failure;
2956
2957 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2958 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2959 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2960 sizeof(key->ct_zone)))
2961 goto nla_put_failure;
2962
2963 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2964 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2965 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2966 sizeof(key->ct_mark)))
2967 goto nla_put_failure;
2968
2969 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2970 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2971 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2972 sizeof(key->ct_labels)))
2973 goto nla_put_failure;
2974
2975 return 0;
2976
2977nla_put_failure:
2978 return -EMSGSIZE;
2979}
2980
0a6e7778
PJV		 2981static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2982 struct flow_dissector_key_enc_opts *enc_opts)
2983{
2984 struct nlattr *nest;
2985 int err;
2986
2987 if (!enc_opts->len)
2988 return 0;
2989
ae0be8de 2990 nest = nla_nest_start_noflag(skb, enc_opt_type);
0a6e7778
PJV		 2991 if (!nest)
2992 goto nla_put_failure;
2993
2994 switch (enc_opts->dst_opt_type) {
2995 case TUNNEL_GENEVE_OPT:
2996 err = fl_dump_key_geneve_opt(skb, enc_opts);
2997 if (err)
2998 goto nla_put_failure;
2999 break;
d8f9dfae
XL		 3000 case TUNNEL_VXLAN_OPT:
3001 err = fl_dump_key_vxlan_opt(skb, enc_opts);
3002 if (err)
3003 goto nla_put_failure;
3004 break;
79b1011c
XL		 3005 case TUNNEL_ERSPAN_OPT:
3006 err = fl_dump_key_erspan_opt(skb, enc_opts);
3007 if (err)
3008 goto nla_put_failure;
3009 break;
e3acda7a
WD		 3010 case TUNNEL_GTP_OPT:
3011 err = fl_dump_key_gtp_opt(skb, enc_opts);
3012 if (err)
3013 goto nla_put_failure;
3014 break;
0a6e7778
PJV		 3015 default:
3016 goto nla_put_failure;
3017 }
3018 nla_nest_end(skb, nest);
3019 return 0;
3020
3021nla_put_failure:
3022 nla_nest_cancel(skb, nest);
3023 return -EMSGSIZE;
3024}
3025
3026static int fl_dump_key_enc_opt(struct sk_buff *skb,
3027 struct flow_dissector_key_enc_opts *key_opts,
3028 struct flow_dissector_key_enc_opts *msk_opts)
3029{
3030 int err;
3031
3032 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
3033 if (err)
3034 return err;
3035
3036 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
3037}
3038
f5749081
JP		 3039static int fl_dump_key(struct sk_buff *skb, struct net *net,
3040 struct fl_flow_key *key, struct fl_flow_key *mask)
77b9900e 3041{
8212ed77 3042 if (mask->meta.ingress_ifindex) {
77b9900e
JP		 3043 struct net_device *dev;
3044
8212ed77 3045 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
77b9900e
JP		 3046 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
3047 goto nla_put_failure;
3048 }
3049
3050 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
3051 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
3052 sizeof(key->eth.dst)) ||
3053 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
3054 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
3055 sizeof(key->eth.src)) ||
3056 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
3057 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
3058 sizeof(key->basic.n_proto)))
3059 goto nla_put_failure;
9399ae9a 3060
b4000312
BS		 3061 if (mask->num_of_vlans.num_of_vlans) {
3062 if (nla_put_u8(skb, TCA_FLOWER_KEY_NUM_OF_VLANS, key->num_of_vlans.num_of_vlans))
3063 goto nla_put_failure;
3064 }
3065
a577d8f7
BL		 3066 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
3067 goto nla_put_failure;
3068
d64efd09
JL		 3069 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
3070 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
9399ae9a
HHZ		 3071 goto nla_put_failure;
3072
d64efd09
JL		 3073 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
3074 TCA_FLOWER_KEY_CVLAN_PRIO,
3075 &key->cvlan, &mask->cvlan) ||
3076 (mask->cvlan.vlan_tpid &&
158abbf1
JL		 3077 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3078 key->cvlan.vlan_tpid)))
d3069512
JL		 3079 goto nla_put_failure;
3080
5e9a0fe4 3081 if (mask->basic.n_proto) {
2105f700 3082 if (mask->cvlan.vlan_eth_type) {
5e9a0fe4
JL		 3083 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
3084 key->basic.n_proto))
3085 goto nla_put_failure;
2105f700 3086 } else if (mask->vlan.vlan_eth_type) {
5e9a0fe4 3087 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2105f700 3088 key->vlan.vlan_eth_type))
5e9a0fe4
JL		 3089 goto nla_put_failure;
3090 }
d64efd09
JL		 3091 }
3092
77b9900e
JP		 3093 if ((key->basic.n_proto == htons(ETH_P_IP) ||
3094 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 3095 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 3096 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a 3097 sizeof(key->basic.ip_proto)) ||
0e2c17b6 3098 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
77b9900e
JP		 3099 goto nla_put_failure;
3100
5008750e
WD		 3101 if (mask->pppoe.session_id) {
3102 if (nla_put_be16(skb, TCA_FLOWER_KEY_PPPOE_SID,
3103 key->pppoe.session_id))
3104 goto nla_put_failure;
3105 }
3106 if (mask->basic.n_proto && mask->pppoe.ppp_proto) {
3107 if (nla_put_be16(skb, TCA_FLOWER_KEY_PPP_PROTO,
3108 key->pppoe.ppp_proto))
3109 goto nla_put_failure;
3110 }
3111
c3f83241 3112 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 3113 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
3114 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
3115 sizeof(key->ipv4.src)) ||
3116 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
3117 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
3118 sizeof(key->ipv4.dst))))
3119 goto nla_put_failure;
c3f83241 3120 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 3121 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
3122 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
3123 sizeof(key->ipv6.src)) ||
3124 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
3125 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
3126 sizeof(key->ipv6.dst))))
3127 goto nla_put_failure;
3128
3129 if (key->basic.ip_proto == IPPROTO_TCP &&
3130 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 3131 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 3132 sizeof(key->tp.src)) ||
3133 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 3134 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 3135 sizeof(key->tp.dst)) ||
3136 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
3137 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
3138 sizeof(key->tcp.flags))))
77b9900e
JP		 3139 goto nla_put_failure;
3140 else if (key->basic.ip_proto == IPPROTO_UDP &&
3141 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 3142 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 3143 sizeof(key->tp.src)) ||
3144 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 3145 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 3146 sizeof(key->tp.dst))))
3147 goto nla_put_failure;
3148 else if (key->basic.ip_proto == IPPROTO_SCTP &&
3149 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
3150 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
3151 sizeof(key->tp.src)) ||
3152 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
3153 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 3154 sizeof(key->tp.dst))))
3155 goto nla_put_failure;
7b684884
SH		 3156 else if (key->basic.n_proto == htons(ETH_P_IP) &&
3157 key->basic.ip_proto == IPPROTO_ICMP &&
3158 (fl_dump_key_val(skb, &key->icmp.type,
3159 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
3160 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
3161 sizeof(key->icmp.type)) ||
3162 fl_dump_key_val(skb, &key->icmp.code,
3163 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
3164 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
3165 sizeof(key->icmp.code))))
3166 goto nla_put_failure;
3167 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
3168 key->basic.ip_proto == IPPROTO_ICMPV6 &&
3169 (fl_dump_key_val(skb, &key->icmp.type,
3170 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
3171 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
3172 sizeof(key->icmp.type)) ||
3173 fl_dump_key_val(skb, &key->icmp.code,
3174 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
3175 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
3176 sizeof(key->icmp.code))))
3177 goto nla_put_failure;
99d31326
SH		 3178 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
3179 key->basic.n_proto == htons(ETH_P_RARP)) &&
3180 (fl_dump_key_val(skb, &key->arp.sip,
3181 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
3182 TCA_FLOWER_KEY_ARP_SIP_MASK,
3183 sizeof(key->arp.sip)) ||
3184 fl_dump_key_val(skb, &key->arp.tip,
3185 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
3186 TCA_FLOWER_KEY_ARP_TIP_MASK,
3187 sizeof(key->arp.tip)) ||
3188 fl_dump_key_val(skb, &key->arp.op,
3189 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
3190 TCA_FLOWER_KEY_ARP_OP_MASK,
3191 sizeof(key->arp.op)) ||
3192 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
3193 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
3194 sizeof(key->arp.sha)) ||
3195 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
3196 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
3197 sizeof(key->arp.tha))))
3198 goto nla_put_failure;
77b9900e 3199
5c72299f
AN		 3200 if ((key->basic.ip_proto == IPPROTO_TCP ||
3201 key->basic.ip_proto == IPPROTO_UDP ||
3202 key->basic.ip_proto == IPPROTO_SCTP) &&
3203 fl_dump_key_port_range(skb, key, mask))
3204 goto nla_put_failure;
3205
bc3103f1
AV		 3206 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3207 (fl_dump_key_val(skb, &key->enc_ipv4.src,
3208 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
3209 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
3210 sizeof(key->enc_ipv4.src)) ||
3211 fl_dump_key_val(skb, &key->enc_ipv4.dst,
3212 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
3213 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
3214 sizeof(key->enc_ipv4.dst))))
3215 goto nla_put_failure;
3216 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3217 (fl_dump_key_val(skb, &key->enc_ipv6.src,
3218 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
3219 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
3220 sizeof(key->enc_ipv6.src)) ||
3221 fl_dump_key_val(skb, &key->enc_ipv6.dst,
3222 TCA_FLOWER_KEY_ENC_IPV6_DST,
3223 &mask->enc_ipv6.dst,
3224 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
3225 sizeof(key->enc_ipv6.dst))))
3226 goto nla_put_failure;
3227
3228 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 3229 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 3230 sizeof(key->enc_key_id)) ||
3231 fl_dump_key_val(skb, &key->enc_tp.src,
3232 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
3233 &mask->enc_tp.src,
3234 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
3235 sizeof(key->enc_tp.src)) ||
3236 fl_dump_key_val(skb, &key->enc_tp.dst,
3237 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
3238 &mask->enc_tp.dst,
3239 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
0e2c17b6 3240 sizeof(key->enc_tp.dst)) ||
0a6e7778
PJV		 3241 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
3242 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
bc3103f1
AV		 3243 goto nla_put_failure;
3244
e0ace68a
PB		 3245 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
3246 goto nla_put_failure;
3247
faa3ffce
OG		 3248 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
3249 goto nla_put_failure;
3250
5923b8f7
AL		 3251 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
3252 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
3253 sizeof(key->hash.hash)))
3254 goto nla_put_failure;
3255
f5749081
JP		 3256 return 0;
3257
3258nla_put_failure:
3259 return -EMSGSIZE;
3260}
3261
3262static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
12db03b6 3263 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
f5749081
JP		 3264{
3265 struct cls_fl_filter *f = fh;
3266 struct nlattr *nest;
3267 struct fl_flow_key *key, *mask;
3d81e711 3268 bool skip_hw;
f5749081
JP		 3269
3270 if (!f)
3271 return skb->len;
3272
3273 t->tcm_handle = f->handle;
3274
ae0be8de 3275 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
f5749081
JP		 3276 if (!nest)
3277 goto nla_put_failure;
3278
3d81e711
VB		 3279 spin_lock(&tp->lock);
3280
f5749081
JP		 3281 if (f->res.classid &&
3282 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3d81e711 3283 goto nla_put_failure_locked;
f5749081
JP		 3284
3285 key = &f->key;
3286 mask = &f->mask->key;
3d81e711 3287 skip_hw = tc_skip_hw(f->flags);
f5749081
JP		 3288
3289 if (fl_dump_key(skb, net, key, mask))
3d81e711 3290 goto nla_put_failure_locked;
f5749081 3291
749e6720 3292 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3d81e711
VB		 3293 goto nla_put_failure_locked;
3294
3295 spin_unlock(&tp->lock);
3296
3297 if (!skip_hw)
c24e43d8 3298 fl_hw_update_stats(tp, f, rtnl_held);
e69985c6 3299
86c55361
VB		 3300 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3301 goto nla_put_failure;
3302
77b9900e
JP		 3303 if (tcf_exts_dump(skb, &f->exts))
3304 goto nla_put_failure;
3305
3306 nla_nest_end(skb, nest);
3307
3308 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3309 goto nla_put_failure;
3310
3311 return skb->len;
3312
3d81e711
VB		 3313nla_put_failure_locked:
3314 spin_unlock(&tp->lock);
77b9900e
JP		 3315nla_put_failure:
3316 nla_nest_cancel(skb, nest);
3317 return -1;
3318}
3319
0348451d
VB		 3320static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3321 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3322{
3323 struct cls_fl_filter *f = fh;
3324 struct nlattr *nest;
3325 bool skip_hw;
3326
3327 if (!f)
3328 return skb->len;
3329
3330 t->tcm_handle = f->handle;
3331
3332 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3333 if (!nest)
3334 goto nla_put_failure;
3335
3336 spin_lock(&tp->lock);
3337
3338 skip_hw = tc_skip_hw(f->flags);
3339
3340 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3341 goto nla_put_failure_locked;
3342
3343 spin_unlock(&tp->lock);
3344
3345 if (!skip_hw)
3346 fl_hw_update_stats(tp, f, rtnl_held);
3347
3348 if (tcf_exts_terse_dump(skb, &f->exts))
3349 goto nla_put_failure;
3350
3351 nla_nest_end(skb, nest);
3352
3353 return skb->len;
3354
3355nla_put_failure_locked:
3356 spin_unlock(&tp->lock);
3357nla_put_failure:
3358 nla_nest_cancel(skb, nest);
3359 return -1;
3360}
3361
b95ec7eb
JP		 3362static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3363{
3364 struct fl_flow_tmplt *tmplt = tmplt_priv;
3365 struct fl_flow_key *key, *mask;
3366 struct nlattr *nest;
3367
ae0be8de 3368 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
b95ec7eb
JP		 3369 if (!nest)
3370 goto nla_put_failure;
3371
3372 key = &tmplt->dummy_key;
3373 mask = &tmplt->mask;
3374
3375 if (fl_dump_key(skb, net, key, mask))
3376 goto nla_put_failure;
3377
3378 nla_nest_end(skb, nest);
3379
3380 return skb->len;
3381
3382nla_put_failure:
3383 nla_nest_cancel(skb, nest);
3384 return -EMSGSIZE;
3385}
3386
2e24cd75
CW		 3387static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3388 unsigned long base)
07d79fc7
CW		 3389{
3390 struct cls_fl_filter *f = fh;
3391
2e24cd75
CW		 3392 if (f && f->res.classid == classid) {
3393 if (cl)
3394 __tcf_bind_filter(q, &f->res, base);
3395 else
3396 __tcf_unbind_filter(q, &f->res);
3397 }
07d79fc7
CW		 3398}
3399
a5b72a08
DC		 3400static bool fl_delete_empty(struct tcf_proto *tp)
3401{
3402 struct cls_fl_head *head = fl_head_dereference(tp);
3403
3404 spin_lock(&tp->lock);
3405 tp->deleting = idr_is_empty(&head->handle_idr);
3406 spin_unlock(&tp->lock);
3407
3408 return tp->deleting;
3409}
3410
77b9900e
JP		 3411static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3412 .kind = "flower",
3413 .classify = fl_classify,
3414 .init = fl_init,
3415 .destroy = fl_destroy,
3416 .get = fl_get,
06177558 3417 .put = fl_put,
77b9900e
JP		 3418 .change = fl_change,
3419 .delete = fl_delete,
a5b72a08 3420 .delete_empty = fl_delete_empty,
77b9900e 3421 .walk = fl_walk,
31533cba 3422 .reoffload = fl_reoffload,
a449a3e7
VB		 3423 .hw_add = fl_hw_add,
3424 .hw_del = fl_hw_del,
77b9900e 3425 .dump = fl_dump,
0348451d 3426 .terse_dump = fl_terse_dump,
07d79fc7 3427 .bind_class = fl_bind_class,
b95ec7eb
JP		 3428 .tmplt_create = fl_tmplt_create,
3429 .tmplt_destroy = fl_tmplt_destroy,
3430 .tmplt_dump = fl_tmplt_dump,
77b9900e 3431 .owner = THIS_MODULE,
92149190 3432 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
77b9900e
JP		 3433};
3434
3435static int __init cls_fl_init(void)
3436{
3437 return register_tcf_proto_ops(&cls_fl_ops);
3438}
3439
3440static void __exit cls_fl_exit(void)
3441{
3442 unregister_tcf_proto_ops(&cls_fl_ops);
3443}
3444
3445module_init(cls_fl_init);
3446module_exit(cls_fl_exit);
3447
3448MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3449MODULE_DESCRIPTION("Flower classifier");
3450MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)