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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-block.git] / net / sched / cls_flower.c
CommitLineData
2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
77b9900e
JP		 2/*
3 * net/sched/cls_flower.c Flower classifier
4 *
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
77b9900e
JP		 6 */
7
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/rhashtable.h>
d9363774 12#include <linux/workqueue.h>
06177558 13#include <linux/refcount.h>
77b9900e
JP		 14
15#include <linux/if_ether.h>
16#include <linux/in6.h>
17#include <linux/ip.h>
a577d8f7 18#include <linux/mpls.h>
77b9900e
JP		 19
20#include <net/sch_generic.h>
21#include <net/pkt_cls.h>
ec624fe7 22#include <net/pkt_sched.h>
77b9900e
JP		 23#include <net/ip.h>
24#include <net/flow_dissector.h>
0a6e7778 25#include <net/geneve.h>
d8f9dfae 26#include <net/vxlan.h>
79b1011c 27#include <net/erspan.h>
77b9900e 28
bc3103f1
AV		 29#include <net/dst.h>
30#include <net/dst_metadata.h>
31
e0ace68a
PB		 32#include <uapi/linux/netfilter/nf_conntrack_common.h>
33
1bcc51ac 34#define TCA_FLOWER_KEY_CT_FLAGS_MAX \
35 ((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
36#define TCA_FLOWER_KEY_CT_FLAGS_MASK \
37 (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
38
77b9900e 39struct fl_flow_key {
8212ed77 40 struct flow_dissector_key_meta meta;
42aecaa9 41 struct flow_dissector_key_control control;
bc3103f1 42 struct flow_dissector_key_control enc_control;
77b9900e
JP		 43 struct flow_dissector_key_basic basic;
44 struct flow_dissector_key_eth_addrs eth;
9399ae9a 45 struct flow_dissector_key_vlan vlan;
d64efd09 46 struct flow_dissector_key_vlan cvlan;
77b9900e 47 union {
c3f83241 48 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 49 struct flow_dissector_key_ipv6_addrs ipv6;
50 };
51 struct flow_dissector_key_ports tp;
7b684884 52 struct flow_dissector_key_icmp icmp;
99d31326 53 struct flow_dissector_key_arp arp;
bc3103f1
AV		 54 struct flow_dissector_key_keyid enc_key_id;
55 union {
56 struct flow_dissector_key_ipv4_addrs enc_ipv4;
57 struct flow_dissector_key_ipv6_addrs enc_ipv6;
58 };
f4d997fd 59 struct flow_dissector_key_ports enc_tp;
a577d8f7 60 struct flow_dissector_key_mpls mpls;
fdfc7dd6 61 struct flow_dissector_key_tcp tcp;
4d80cc0a 62 struct flow_dissector_key_ip ip;
0e2c17b6 63 struct flow_dissector_key_ip enc_ip;
0a6e7778 64 struct flow_dissector_key_enc_opts enc_opts;
8ffb055b
YK		 65 union {
66 struct flow_dissector_key_ports tp;
67 struct {
68 struct flow_dissector_key_ports tp_min;
69 struct flow_dissector_key_ports tp_max;
70 };
71 } tp_range;
e0ace68a 72 struct flow_dissector_key_ct ct;
5923b8f7 73 struct flow_dissector_key_hash hash;
77b9900e
JP		 74} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
75
76struct fl_flow_mask_range {
77 unsigned short int start;
78 unsigned short int end;
79};
80
81struct fl_flow_mask {
82 struct fl_flow_key key;
83 struct fl_flow_mask_range range;
5c72299f 84 u32 flags;
05cd271f
PB		 85 struct rhash_head ht_node;
86 struct rhashtable ht;
87 struct rhashtable_params filter_ht_params;
88 struct flow_dissector dissector;
89 struct list_head filters;
44a5cd43 90 struct rcu_work rwork;
05cd271f 91 struct list_head list;
f48ef4d5 92 refcount_t refcnt;
77b9900e
JP		 93};
94
b95ec7eb
JP		 95struct fl_flow_tmplt {
96 struct fl_flow_key dummy_key;
97 struct fl_flow_key mask;
98 struct flow_dissector dissector;
99 struct tcf_chain *chain;
100};
101
77b9900e
JP		 102struct cls_fl_head {
103 struct rhashtable ht;
259e60f9 104 spinlock_t masks_lock; /* Protect masks list */
05cd271f 105 struct list_head masks;
c049d56e 106 struct list_head hw_filters;
aaa908ff 107 struct rcu_work rwork;
c15ab236 108 struct idr handle_idr;
77b9900e
JP		 109};
110
111struct cls_fl_filter {
05cd271f 112 struct fl_flow_mask *mask;
77b9900e
JP		 113 struct rhash_head ht_node;
114 struct fl_flow_key mkey;
115 struct tcf_exts exts;
116 struct tcf_result res;
117 struct fl_flow_key key;
118 struct list_head list;
c049d56e 119 struct list_head hw_list;
77b9900e 120 u32 handle;
e69985c6 121 u32 flags;
86c55361 122 u32 in_hw_count;
aaa908ff 123 struct rcu_work rwork;
7091d8c7 124 struct net_device *hw_dev;
06177558
VB		 125 /* Flower classifier is unlocked, which means that its reference counter
126 * can be changed concurrently without any kind of external
127 * synchronization. Use atomic reference counter to be concurrency-safe.
128 */
129 refcount_t refcnt;
b2552b8c 130 bool deleted;
77b9900e
JP		 131};
132
05cd271f
PB		 133static const struct rhashtable_params mask_ht_params = {
134 .key_offset = offsetof(struct fl_flow_mask, key),
135 .key_len = sizeof(struct fl_flow_key),
136 .head_offset = offsetof(struct fl_flow_mask, ht_node),
137 .automatic_shrinking = true,
138};
139
77b9900e
JP		 140static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
141{
142 return mask->range.end - mask->range.start;
143}
144
145static void fl_mask_update_range(struct fl_flow_mask *mask)
146{
147 const u8 *bytes = (const u8 *) &mask->key;
148 size_t size = sizeof(mask->key);
05cd271f 149 size_t i, first = 0, last;
77b9900e 150
05cd271f
PB		 151 for (i = 0; i < size; i++) {
152 if (bytes[i]) {
153 first = i;
154 break;
155 }
156 }
157 last = first;
158 for (i = size - 1; i != first; i--) {
77b9900e 159 if (bytes[i]) {
77b9900e 160 last = i;
05cd271f 161 break;
77b9900e
JP		 162 }
163 }
164 mask->range.start = rounddown(first, sizeof(long));
165 mask->range.end = roundup(last + 1, sizeof(long));
166}
167
168static void *fl_key_get_start(struct fl_flow_key *key,
169 const struct fl_flow_mask *mask)
170{
171 return (u8 *) key + mask->range.start;
172}
173
174static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
175 struct fl_flow_mask *mask)
176{
177 const long *lkey = fl_key_get_start(key, mask);
178 const long *lmask = fl_key_get_start(&mask->key, mask);
179 long *lmkey = fl_key_get_start(mkey, mask);
180 int i;
181
182 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
183 *lmkey++ = *lkey++ & *lmask++;
184}
185
b95ec7eb
JP		 186static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
187 struct fl_flow_mask *mask)
188{
189 const long *lmask = fl_key_get_start(&mask->key, mask);
190 const long *ltmplt;
191 int i;
192
193 if (!tmplt)
194 return true;
195 ltmplt = fl_key_get_start(&tmplt->mask, mask);
196 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
197 if (~*ltmplt++ & *lmask++)
198 return false;
199 }
200 return true;
201}
202
77b9900e
JP		 203static void fl_clear_masked_range(struct fl_flow_key *key,
204 struct fl_flow_mask *mask)
205{
206 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
207}
208
5c72299f
AN		 209static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
210 struct fl_flow_key *key,
211 struct fl_flow_key *mkey)
212{
6215afcb 213 u16 min_mask, max_mask, min_val, max_val;
5c72299f 214
6215afcb
VO		 215 min_mask = ntohs(filter->mask->key.tp_range.tp_min.dst);
216 max_mask = ntohs(filter->mask->key.tp_range.tp_max.dst);
217 min_val = ntohs(filter->key.tp_range.tp_min.dst);
218 max_val = ntohs(filter->key.tp_range.tp_max.dst);
5c72299f
AN		 219
220 if (min_mask && max_mask) {
6215afcb
VO		 221 if (ntohs(key->tp_range.tp.dst) < min_val ||
222 ntohs(key->tp_range.tp.dst) > max_val)
5c72299f
AN		 223 return false;
224
225 /* skb does not have min and max values */
8ffb055b
YK		 226 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
227 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
5c72299f
AN		 228 }
229 return true;
230}
231
232static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
233 struct fl_flow_key *key,
234 struct fl_flow_key *mkey)
235{
6215afcb 236 u16 min_mask, max_mask, min_val, max_val;
5c72299f 237
6215afcb
VO		 238 min_mask = ntohs(filter->mask->key.tp_range.tp_min.src);
239 max_mask = ntohs(filter->mask->key.tp_range.tp_max.src);
240 min_val = ntohs(filter->key.tp_range.tp_min.src);
241 max_val = ntohs(filter->key.tp_range.tp_max.src);
5c72299f
AN		 242
243 if (min_mask && max_mask) {
6215afcb
VO		 244 if (ntohs(key->tp_range.tp.src) < min_val ||
245 ntohs(key->tp_range.tp.src) > max_val)
5c72299f
AN		 246 return false;
247
248 /* skb does not have min and max values */
8ffb055b
YK		 249 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
250 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
5c72299f
AN		 251 }
252 return true;
253}
254
255static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
256 struct fl_flow_key *mkey)
a3308d8f 257{
05cd271f
PB		 258 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
259 mask->filter_ht_params);
a3308d8f
PB		 260}
261
5c72299f
AN		 262static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
263 struct fl_flow_key *mkey,
264 struct fl_flow_key *key)
265{
266 struct cls_fl_filter *filter, *f;
267
268 list_for_each_entry_rcu(filter, &mask->filters, list) {
269 if (!fl_range_port_dst_cmp(filter, key, mkey))
270 continue;
271
272 if (!fl_range_port_src_cmp(filter, key, mkey))
273 continue;
274
275 f = __fl_lookup(mask, mkey);
276 if (f)
277 return f;
278 }
279 return NULL;
280}
281
0af413bd
AB		 282static noinline_for_stack
283struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
5c72299f 284{
0af413bd
AB		 285 struct fl_flow_key mkey;
286
287 fl_set_masked_key(&mkey, key, mask);
5c72299f 288 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
0af413bd 289 return fl_lookup_range(mask, &mkey, key);
5c72299f 290
0af413bd 291 return __fl_lookup(mask, &mkey);
5c72299f
AN		 292}
293
e0ace68a
PB		 294static u16 fl_ct_info_to_flower_map[] = {
295 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
296 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
297 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
298 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
299 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
8c85d18c
PB		 300 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
301 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
e0ace68a 302 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
8c85d18c
PB		 303 TCA_FLOWER_KEY_CT_FLAGS_RELATED |
304 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
e0ace68a
PB		 305 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
306 TCA_FLOWER_KEY_CT_FLAGS_NEW,
307};
308
77b9900e
JP		 309static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
310 struct tcf_result *res)
311{
312 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
ec624fe7 313 bool post_ct = tc_skb_cb(skb)->post_ct;
38495958 314 u16 zone = tc_skb_cb(skb)->zone;
e0ace68a
PB		 315 struct fl_flow_key skb_key;
316 struct fl_flow_mask *mask;
317 struct cls_fl_filter *f;
77b9900e 318
05cd271f 319 list_for_each_entry_rcu(mask, &head->masks, list) {
8a9093c7 320 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
05cd271f 321 fl_clear_masked_range(&skb_key, mask);
bc3103f1 322
8212ed77 323 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
05cd271f
PB		 324 /* skb_flow_dissect() does not set n_proto in case an unknown
325 * protocol, so do it rather here.
326 */
d7bf2ebe 327 skb_key.basic.n_proto = skb_protocol(skb, false);
05cd271f 328 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
e0ace68a
PB		 329 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
330 fl_ct_info_to_flower_map,
7baf2429 331 ARRAY_SIZE(fl_ct_info_to_flower_map),
38495958 332 post_ct, zone);
5923b8f7 333 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
6de6e46d
YK		 334 skb_flow_dissect(skb, &mask->dissector, &skb_key,
335 FLOW_DISSECTOR_F_STOP_BEFORE_ENCAP);
77b9900e 336
0af413bd 337 f = fl_mask_lookup(mask, &skb_key);
05cd271f
PB		 338 if (f && !tc_skip_sw(f->flags)) {
339 *res = f->res;
340 return tcf_exts_exec(skb, &f->exts, res);
341 }
77b9900e
JP		 342 }
343 return -1;
344}
345
346static int fl_init(struct tcf_proto *tp)
347{
348 struct cls_fl_head *head;
349
350 head = kzalloc(sizeof(*head), GFP_KERNEL);
351 if (!head)
352 return -ENOBUFS;
353
259e60f9 354 spin_lock_init(&head->masks_lock);
05cd271f 355 INIT_LIST_HEAD_RCU(&head->masks);
c049d56e 356 INIT_LIST_HEAD(&head->hw_filters);
77b9900e 357 rcu_assign_pointer(tp->root, head);
c15ab236 358 idr_init(&head->handle_idr);
77b9900e 359
05cd271f
PB		 360 return rhashtable_init(&head->ht, &mask_ht_params);
361}
362
99815f50 363static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
44a5cd43 364{
99815f50
VB		 365 /* temporary masks don't have their filters list and ht initialized */
366 if (mask_init_done) {
367 WARN_ON(!list_empty(&mask->filters));
368 rhashtable_destroy(&mask->ht);
369 }
44a5cd43
PA		 370 kfree(mask);
371}
372
373static void fl_mask_free_work(struct work_struct *work)
374{
375 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
376 struct fl_flow_mask, rwork);
377
99815f50
VB		 378 fl_mask_free(mask, true);
379}
380
381static void fl_uninit_mask_free_work(struct work_struct *work)
382{
383 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
384 struct fl_flow_mask, rwork);
385
386 fl_mask_free(mask, false);
44a5cd43
PA		 387}
388
9994677c 389static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
05cd271f 390{
f48ef4d5 391 if (!refcount_dec_and_test(&mask->refcnt))
05cd271f
PB		 392 return false;
393
394 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
259e60f9
VB		 395
396 spin_lock(&head->masks_lock);
05cd271f 397 list_del_rcu(&mask->list);
259e60f9
VB		 398 spin_unlock(&head->masks_lock);
399
9994677c 400 tcf_queue_work(&mask->rwork, fl_mask_free_work);
05cd271f
PB		 401
402 return true;
77b9900e
JP		 403}
404
c049d56e
VB		 405static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
406{
407 /* Flower classifier only changes root pointer during init and destroy.
408 * Users must obtain reference to tcf_proto instance before calling its
409 * API, so tp->root pointer is protected from concurrent call to
410 * fl_destroy() by reference counting.
411 */
412 return rcu_dereference_raw(tp->root);
413}
414
0dadc117
CW		 415static void __fl_destroy_filter(struct cls_fl_filter *f)
416{
417 tcf_exts_destroy(&f->exts);
418 tcf_exts_put_net(&f->exts);
419 kfree(f);
420}
421
0552c8af 422static void fl_destroy_filter_work(struct work_struct *work)
77b9900e 423{
aaa908ff
CW		 424 struct cls_fl_filter *f = container_of(to_rcu_work(work),
425 struct cls_fl_filter, rwork);
77b9900e 426
0dadc117 427 __fl_destroy_filter(f);
0552c8af
CW		 428}
429
1b0f8037 430static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8 431 bool rtnl_held, struct netlink_ext_ack *extack)
5b33f488 432{
208c0f4b 433 struct tcf_block *block = tp->chain->block;
f9e30088 434 struct flow_cls_offload cls_flower = {};
5b33f488 435
d6787147 436 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 437 cls_flower.command = FLOW_CLS_DESTROY;
de4784ca 438 cls_flower.cookie = (unsigned long) f;
5b33f488 439
40119211 440 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
918190f5 441 &f->flags, &f->in_hw_count, rtnl_held);
c24e43d8 442
5b33f488
AV		 443}
444
e8eb36cd 445static int fl_hw_replace_filter(struct tcf_proto *tp,
c24e43d8 446 struct cls_fl_filter *f, bool rtnl_held,
41002038 447 struct netlink_ext_ack *extack)
5b33f488 448{
208c0f4b 449 struct tcf_block *block = tp->chain->block;
f9e30088 450 struct flow_cls_offload cls_flower = {};
717503b9 451 bool skip_sw = tc_skip_sw(f->flags);
c24e43d8
VB		 452 int err = 0;
453
e3ab786b 454 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
918190f5
VB		 455 if (!cls_flower.rule)
456 return -ENOMEM;
8f256622 457
d6787147 458 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
f9e30088 459 cls_flower.command = FLOW_CLS_REPLACE;
de4784ca 460 cls_flower.cookie = (unsigned long) f;
8f256622
PNA		 461 cls_flower.rule->match.dissector = &f->mask->dissector;
462 cls_flower.rule->match.mask = &f->mask->key;
463 cls_flower.rule->match.key = &f->mkey;
384c181e 464 cls_flower.classid = f->res.classid;
5b33f488 465
9c1c0e12 466 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts);
3a7b6861
PNA		 467 if (err) {
468 kfree(cls_flower.rule);
918190f5 469 if (skip_sw) {
1f15bb4f 470 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
918190f5
VB		 471 return err;
472 }
473 return 0;
3a7b6861
PNA		 474 }
475
40119211 476 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
918190f5 477 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
9c1c0e12 478 tc_cleanup_offload_action(&cls_flower.rule->action);
8f256622
PNA		 479 kfree(cls_flower.rule);
480
40119211 481 if (err) {
918190f5
VB		 482 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
483 return err;
717503b9
JP		 484 }
485
918190f5
VB		 486 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
487 return -EINVAL;
c24e43d8 488
918190f5 489 return 0;
5b33f488
AV		 490}
491
c24e43d8
VB		 492static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
493 bool rtnl_held)
10cbc684 494{
208c0f4b 495 struct tcf_block *block = tp->chain->block;
f9e30088 496 struct flow_cls_offload cls_flower = {};
10cbc684 497
d6787147 498 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
f9e30088 499 cls_flower.command = FLOW_CLS_STATS;
de4784ca 500 cls_flower.cookie = (unsigned long) f;
384c181e 501 cls_flower.classid = f->res.classid;
10cbc684 502
918190f5
VB		 503 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
504 rtnl_held);
3b1903ef 505
bcd64368
BZ		 506 tcf_exts_hw_stats_update(&f->exts, cls_flower.stats.bytes,
507 cls_flower.stats.pkts,
508 cls_flower.stats.drops,
509 cls_flower.stats.lastused,
510 cls_flower.stats.used_hw_stats,
511 cls_flower.stats.used_hw_stats_valid);
10cbc684
AV		 512}
513
06177558
VB		 514static void __fl_put(struct cls_fl_filter *f)
515{
516 if (!refcount_dec_and_test(&f->refcnt))
517 return;
518
519 if (tcf_exts_get_net(&f->exts))
520 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
521 else
522 __fl_destroy_filter(f);
523}
524
525static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
526{
527 struct cls_fl_filter *f;
528
529 rcu_read_lock();
530 f = idr_find(&head->handle_idr, handle);
531 if (f && !refcount_inc_not_zero(&f->refcnt))
532 f = NULL;
533 rcu_read_unlock();
534
535 return f;
536}
537
b2552b8c 538static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
c24e43d8
VB		 539 bool *last, bool rtnl_held,
540 struct netlink_ext_ack *extack)
13fa876e 541{
e474619a 542 struct cls_fl_head *head = fl_head_dereference(tp);
c15ab236 543
b2552b8c
VB		 544 *last = false;
545
3d81e711
VB		 546 spin_lock(&tp->lock);
547 if (f->deleted) {
548 spin_unlock(&tp->lock);
b2552b8c 549 return -ENOENT;
3d81e711 550 }
b2552b8c
VB		 551
552 f->deleted = true;
553 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
554 f->mask->filter_ht_params);
9c160941 555 idr_remove(&head->handle_idr, f->handle);
13fa876e 556 list_del_rcu(&f->list);
3d81e711
VB		 557 spin_unlock(&tp->lock);
558
9994677c 559 *last = fl_mask_put(head, f->mask);
79685219 560 if (!tc_skip_hw(f->flags))
c24e43d8 561 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
13fa876e 562 tcf_unbind_filter(tp, &f->res);
06177558 563 __fl_put(f);
05cd271f 564
b2552b8c 565 return 0;
13fa876e
RD		 566}
567
d9363774
DB		 568static void fl_destroy_sleepable(struct work_struct *work)
569{
aaa908ff
CW		 570 struct cls_fl_head *head = container_of(to_rcu_work(work),
571 struct cls_fl_head,
572 rwork);
de9dc650
PB		 573
574 rhashtable_destroy(&head->ht);
d9363774
DB		 575 kfree(head);
576 module_put(THIS_MODULE);
577}
578
12db03b6
VB		 579static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
580 struct netlink_ext_ack *extack)
77b9900e 581{
e474619a 582 struct cls_fl_head *head = fl_head_dereference(tp);
05cd271f 583 struct fl_flow_mask *mask, *next_mask;
77b9900e 584 struct cls_fl_filter *f, *next;
b2552b8c 585 bool last;
77b9900e 586
05cd271f
PB		 587 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
588 list_for_each_entry_safe(f, next, &mask->filters, list) {
c24e43d8 589 __fl_delete(tp, f, &last, rtnl_held, extack);
b2552b8c 590 if (last)
05cd271f
PB		 591 break;
592 }
593 }
c15ab236 594 idr_destroy(&head->handle_idr);
d9363774
DB		 595
596 __module_get(THIS_MODULE);
aaa908ff 597 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
77b9900e
JP		 598}
599
06177558
VB		 600static void fl_put(struct tcf_proto *tp, void *arg)
601{
602 struct cls_fl_filter *f = arg;
603
604 __fl_put(f);
605}
606
8113c095 607static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e 608{
e474619a 609 struct cls_fl_head *head = fl_head_dereference(tp);
77b9900e 610
06177558 611 return __fl_get(head, handle);
77b9900e
JP		 612}
613
614static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
615 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
616 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
617 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
618 .len = IFNAMSIZ },
619 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
620 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
621 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
622 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
623 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
624 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
625 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
626 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
627 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
628 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
629 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
630 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
631 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
632 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
633 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
634 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 635 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
636 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 637 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
638 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
639 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 640 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
641 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
642 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
643 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
644 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
645 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
646 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
647 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
648 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 649 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
650 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
651 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
652 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 653 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
654 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
655 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
656 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 657 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
658 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
659 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
660 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 661 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
662 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 663 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
666 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
667 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
668 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
669 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 671 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
672 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
673 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
674 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
675 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
678 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
679 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
680 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 681 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
683 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
684 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
61aec25a 685 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
fdfc7dd6
JP		 686 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
687 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 688 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
689 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
691 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
d64efd09
JL		 692 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
693 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
694 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
0e2c17b6
OG		 695 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
696 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
697 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
698 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
0a6e7778
PJV		 699 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
700 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
1bcc51ac 701 [TCA_FLOWER_KEY_CT_STATE] =
702 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
703 [TCA_FLOWER_KEY_CT_STATE_MASK] =
704 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
e0ace68a
PB		 705 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
706 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
707 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
708 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
709 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
710 .len = 128 / BITS_PER_BYTE },
711 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
712 .len = 128 / BITS_PER_BYTE },
e2debf08 713 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
5923b8f7
AL		 714 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
715 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
716
0a6e7778
PJV		 717};
718
719static const struct nla_policy
720enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
d8f9dfae
XL		 721 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
722 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
0a6e7778 723 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
d8f9dfae 724 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
79b1011c 725 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .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
61aec25a
GN		 749static const struct nla_policy
750mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
751 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
752 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
753 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
754 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
755 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
756};
757
77b9900e
JP		 758static void fl_set_key_val(struct nlattr **tb,
759 void *val, int val_type,
760 void *mask, int mask_type, int len)
761{
762 if (!tb[val_type])
763 return;
e0ace68a 764 nla_memcpy(val, tb[val_type], len);
77b9900e
JP		 765 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
766 memset(mask, 0xff, len);
767 else
e0ace68a 768 nla_memcpy(mask, tb[mask_type], len);
77b9900e
JP		 769}
770
5c72299f 771static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
bd7d4c12
GN		 772 struct fl_flow_key *mask,
773 struct netlink_ext_ack *extack)
5c72299f 774{
8ffb055b
YK		 775 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
776 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
777 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
778 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
779 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
780 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
781 fl_set_key_val(tb, &key->tp_range.tp_min.src,
782 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
783 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
784 fl_set_key_val(tb, &key->tp_range.tp_max.src,
785 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
786 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
787
bd7d4c12 788 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
6215afcb
VO		 789 ntohs(key->tp_range.tp_max.dst) <=
790 ntohs(key->tp_range.tp_min.dst)) {
bd7d4c12
GN		 791 NL_SET_ERR_MSG_ATTR(extack,
792 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
793 "Invalid destination port range (min must be strictly smaller than max)");
5c72299f 794 return -EINVAL;
bd7d4c12
GN		 795 }
796 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
6215afcb
VO		 797 ntohs(key->tp_range.tp_max.src) <=
798 ntohs(key->tp_range.tp_min.src)) {
bd7d4c12
GN		 799 NL_SET_ERR_MSG_ATTR(extack,
800 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
801 "Invalid source port range (min must be strictly smaller than max)");
802 return -EINVAL;
803 }
5c72299f
AN		 804
805 return 0;
806}
807
61aec25a
GN		 808static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
809 struct flow_dissector_key_mpls *key_val,
810 struct flow_dissector_key_mpls *key_mask,
811 struct netlink_ext_ack *extack)
812{
813 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
814 struct flow_dissector_mpls_lse *lse_mask;
815 struct flow_dissector_mpls_lse *lse_val;
816 u8 lse_index;
817 u8 depth;
818 int err;
819
820 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
821 mpls_stack_entry_policy, extack);
822 if (err < 0)
823 return err;
824
825 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
826 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
827 return -EINVAL;
828 }
829
830 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
831
832 /* LSE depth starts at 1, for consistency with terminology used by
833 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
834 */
835 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
836 NL_SET_ERR_MSG_ATTR(extack,
837 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
838 "Invalid MPLS depth");
839 return -EINVAL;
840 }
841 lse_index = depth - 1;
842
843 dissector_set_mpls_lse(key_val, lse_index);
844 dissector_set_mpls_lse(key_mask, lse_index);
845
846 lse_val = &key_val->ls[lse_index];
847 lse_mask = &key_mask->ls[lse_index];
848
849 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
850 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
851 lse_mask->mpls_ttl = MPLS_TTL_MASK;
852 }
853 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
854 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
855
856 if (bos & ~MPLS_BOS_MASK) {
857 NL_SET_ERR_MSG_ATTR(extack,
858 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
859 "Bottom Of Stack (BOS) must be 0 or 1");
860 return -EINVAL;
861 }
862 lse_val->mpls_bos = bos;
863 lse_mask->mpls_bos = MPLS_BOS_MASK;
864 }
865 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
866 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
867
868 if (tc & ~MPLS_TC_MASK) {
869 NL_SET_ERR_MSG_ATTR(extack,
870 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
871 "Traffic Class (TC) must be between 0 and 7");
872 return -EINVAL;
873 }
874 lse_val->mpls_tc = tc;
875 lse_mask->mpls_tc = MPLS_TC_MASK;
876 }
877 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
878 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
879
880 if (label & ~MPLS_LABEL_MASK) {
881 NL_SET_ERR_MSG_ATTR(extack,
882 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
883 "Label must be between 0 and 1048575");
884 return -EINVAL;
885 }
886 lse_val->mpls_label = label;
887 lse_mask->mpls_label = MPLS_LABEL_MASK;
888 }
889
890 return 0;
891}
892
893static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
894 struct flow_dissector_key_mpls *key_val,
895 struct flow_dissector_key_mpls *key_mask,
896 struct netlink_ext_ack *extack)
897{
898 struct nlattr *nla_lse;
899 int rem;
900 int err;
901
902 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
903 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
904 "NLA_F_NESTED is missing");
905 return -EINVAL;
906 }
907
908 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
909 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
910 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
911 "Invalid MPLS option type");
912 return -EINVAL;
913 }
914
915 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
916 if (err < 0)
917 return err;
918 }
919 if (rem) {
920 NL_SET_ERR_MSG(extack,
921 "Bytes leftover after parsing MPLS options");
922 return -EINVAL;
923 }
924
925 return 0;
926}
927
1a7fca63
BL		 928static int fl_set_key_mpls(struct nlattr **tb,
929 struct flow_dissector_key_mpls *key_val,
442f730e
GN		 930 struct flow_dissector_key_mpls *key_mask,
931 struct netlink_ext_ack *extack)
a577d8f7 932{
58cff782
GN		 933 struct flow_dissector_mpls_lse *lse_mask;
934 struct flow_dissector_mpls_lse *lse_val;
935
61aec25a
GN		 936 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
937 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
938 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
939 tb[TCA_FLOWER_KEY_MPLS_TC] ||
940 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
941 NL_SET_ERR_MSG_ATTR(extack,
942 tb[TCA_FLOWER_KEY_MPLS_OPTS],
943 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
944 return -EBADMSG;
945 }
946
947 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
948 key_val, key_mask, extack);
949 }
950
58cff782
GN		 951 lse_val = &key_val->ls[0];
952 lse_mask = &key_mask->ls[0];
953
a577d8f7 954 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
58cff782
GN		 955 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
956 lse_mask->mpls_ttl = MPLS_TTL_MASK;
957 dissector_set_mpls_lse(key_val, 0);
958 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 959 }
960 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 961 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
962
442f730e
GN		 963 if (bos & ~MPLS_BOS_MASK) {
964 NL_SET_ERR_MSG_ATTR(extack,
965 tb[TCA_FLOWER_KEY_MPLS_BOS],
966 "Bottom Of Stack (BOS) must be 0 or 1");
1a7fca63 967 return -EINVAL;
442f730e 968 }
58cff782
GN		 969 lse_val->mpls_bos = bos;
970 lse_mask->mpls_bos = MPLS_BOS_MASK;
971 dissector_set_mpls_lse(key_val, 0);
972 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 973 }
974 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 975 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
976
442f730e
GN		 977 if (tc & ~MPLS_TC_MASK) {
978 NL_SET_ERR_MSG_ATTR(extack,
979 tb[TCA_FLOWER_KEY_MPLS_TC],
980 "Traffic Class (TC) must be between 0 and 7");
1a7fca63 981 return -EINVAL;
442f730e 982 }
58cff782
GN		 983 lse_val->mpls_tc = tc;
984 lse_mask->mpls_tc = MPLS_TC_MASK;
985 dissector_set_mpls_lse(key_val, 0);
986 dissector_set_mpls_lse(key_mask, 0);
a577d8f7
BL		 987 }
988 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 989 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
990
442f730e
GN		 991 if (label & ~MPLS_LABEL_MASK) {
992 NL_SET_ERR_MSG_ATTR(extack,
993 tb[TCA_FLOWER_KEY_MPLS_LABEL],
994 "Label must be between 0 and 1048575");
1a7fca63 995 return -EINVAL;
442f730e 996 }
58cff782
GN		 997 lse_val->mpls_label = label;
998 lse_mask->mpls_label = MPLS_LABEL_MASK;
999 dissector_set_mpls_lse(key_val, 0);
1000 dissector_set_mpls_lse(key_mask, 0);
a577d8f7 1001 }
1a7fca63 1002 return 0;
a577d8f7
BL		 1003}
1004
9399ae9a 1005static void fl_set_key_vlan(struct nlattr **tb,
aaab0834 1006 __be16 ethertype,
d64efd09 1007 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 1008 struct flow_dissector_key_vlan *key_val,
1009 struct flow_dissector_key_vlan *key_mask)
1010{
1011#define VLAN_PRIORITY_MASK 0x7
1012
d64efd09 1013 if (tb[vlan_id_key]) {
9399ae9a 1014 key_val->vlan_id =
d64efd09 1015 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
9399ae9a
HHZ		 1016 key_mask->vlan_id = VLAN_VID_MASK;
1017 }
d64efd09 1018 if (tb[vlan_prio_key]) {
9399ae9a 1019 key_val->vlan_priority =
d64efd09 1020 nla_get_u8(tb[vlan_prio_key]) &
9399ae9a
HHZ		 1021 VLAN_PRIORITY_MASK;
1022 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1023 }
aaab0834
JL		 1024 key_val->vlan_tpid = ethertype;
1025 key_mask->vlan_tpid = cpu_to_be16(~0);
9399ae9a
HHZ		 1026}
1027
faa3ffce
OG		 1028static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1029 u32 *dissector_key, u32 *dissector_mask,
1030 u32 flower_flag_bit, u32 dissector_flag_bit)
1031{
1032 if (flower_mask & flower_flag_bit) {
1033 *dissector_mask |= dissector_flag_bit;
1034 if (flower_key & flower_flag_bit)
1035 *dissector_key |= dissector_flag_bit;
1036 }
1037}
1038
e304e21a
GN		 1039static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1040 u32 *flags_mask, struct netlink_ext_ack *extack)
faa3ffce
OG		 1041{
1042 u32 key, mask;
1043
d9724772 1044 /* mask is mandatory for flags */
e304e21a
GN		 1045 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1046 NL_SET_ERR_MSG(extack, "Missing flags mask");
d9724772 1047 return -EINVAL;
e304e21a 1048 }
faa3ffce 1049
abee13f5
VO		 1050 key = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS]));
1051 mask = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 1052
1053 *flags_key = 0;
1054 *flags_mask = 0;
1055
1056 fl_set_key_flag(key, mask, flags_key, flags_mask,
1057 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 1058 fl_set_key_flag(key, mask, flags_key, flags_mask,
1059 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1060 FLOW_DIS_FIRST_FRAG);
d9724772
OG		 1061
1062 return 0;
faa3ffce
OG		 1063}
1064
0e2c17b6 1065static void fl_set_key_ip(struct nlattr **tb, bool encap,
4d80cc0a
OG		 1066 struct flow_dissector_key_ip *key,
1067 struct flow_dissector_key_ip *mask)
1068{
0e2c17b6
OG		 1069 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1070 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1071 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1072 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
4d80cc0a 1073
0e2c17b6
OG		 1074 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1075 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
4d80cc0a
OG		 1076}
1077
0a6e7778
PJV		 1078static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1079 int depth, int option_len,
1080 struct netlink_ext_ack *extack)
1081{
1082 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1083 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1084 struct geneve_opt *opt;
1085 int err, data_len = 0;
1086
1087 if (option_len > sizeof(struct geneve_opt))
1088 data_len = option_len - sizeof(struct geneve_opt);
1089
1090 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1091 memset(opt, 0xff, option_len);
1092 opt->length = data_len / 4;
1093 opt->r1 = 0;
1094 opt->r2 = 0;
1095 opt->r3 = 0;
1096
1097 /* If no mask has been prodived we assume an exact match. */
1098 if (!depth)
1099 return sizeof(struct geneve_opt) + data_len;
1100
1101 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1102 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1103 return -EINVAL;
1104 }
1105
8cb08174
JB		 1106 err = nla_parse_nested_deprecated(tb,
1107 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1108 nla, geneve_opt_policy, extack);
0a6e7778
PJV		 1109 if (err < 0)
1110 return err;
1111
1112 /* We are not allowed to omit any of CLASS, TYPE or DATA
1113 * fields from the key.
1114 */
1115 if (!option_len &&
1116 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1117 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1118 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1119 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1120 return -EINVAL;
1121 }
1122
1123 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1124 * for the mask.
1125 */
1126 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1127 int new_len = key->enc_opts.len;
1128
1129 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1130 data_len = nla_len(data);
1131 if (data_len < 4) {
1132 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1133 return -ERANGE;
1134 }
1135 if (data_len % 4) {
1136 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1137 return -ERANGE;
1138 }
1139
1140 new_len += sizeof(struct geneve_opt) + data_len;
1141 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1142 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1143 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1144 return -ERANGE;
1145 }
1146 opt->length = data_len / 4;
1147 memcpy(opt->opt_data, nla_data(data), data_len);
1148 }
1149
1150 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1151 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1152 opt->opt_class = nla_get_be16(class);
1153 }
1154
1155 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1156 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1157 opt->type = nla_get_u8(type);
1158 }
1159
1160 return sizeof(struct geneve_opt) + data_len;
1161}
1162
d8f9dfae
XL		 1163static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1164 int depth, int option_len,
1165 struct netlink_ext_ack *extack)
1166{
1167 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1168 struct vxlan_metadata *md;
1169 int err;
1170
1171 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1172 memset(md, 0xff, sizeof(*md));
1173
1174 if (!depth)
1175 return sizeof(*md);
1176
1177 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1178 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1179 return -EINVAL;
1180 }
1181
1182 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1183 vxlan_opt_policy, extack);
1184 if (err < 0)
1185 return err;
1186
1187 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1188 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1189 return -EINVAL;
1190 }
1191
13e6ce98 1192 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
d8f9dfae 1193 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
13e6ce98
XL		 1194 md->gbp &= VXLAN_GBP_MASK;
1195 }
d8f9dfae
XL		 1196
1197 return sizeof(*md);
1198}
1199
79b1011c
XL		 1200static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1201 int depth, int option_len,
1202 struct netlink_ext_ack *extack)
1203{
1204 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1205 struct erspan_metadata *md;
1206 int err;
1207
1208 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1209 memset(md, 0xff, sizeof(*md));
1210 md->version = 1;
1211
1212 if (!depth)
1213 return sizeof(*md);
1214
1215 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1216 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1217 return -EINVAL;
1218 }
1219
1220 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1221 erspan_opt_policy, extack);
1222 if (err < 0)
1223 return err;
1224
1225 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1226 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1227 return -EINVAL;
1228 }
1229
1230 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1231 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1232
1233 if (md->version == 1) {
1234 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1235 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1236 return -EINVAL;
1237 }
1238 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1239 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
8e1b3ac4 1240 memset(&md->u, 0x00, sizeof(md->u));
79b1011c
XL		 1241 md->u.index = nla_get_be32(nla);
1242 }
1243 } else if (md->version == 2) {
1244 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1245 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1246 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1247 return -EINVAL;
1248 }
1249 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1250 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1251 md->u.md2.dir = nla_get_u8(nla);
1252 }
1253 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1254 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1255 set_hwid(&md->u.md2, nla_get_u8(nla));
1256 }
1257 } else {
1258 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1259 return -EINVAL;
1260 }
1261
1262 return sizeof(*md);
1263}
1264
0a6e7778
PJV		 1265static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1266 struct fl_flow_key *mask,
1267 struct netlink_ext_ack *extack)
1268{
1269 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
63c82997
JK		 1270 int err, option_len, key_depth, msk_depth = 0;
1271
8cb08174
JB		 1272 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1273 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1274 enc_opts_policy, extack);
63c82997
JK		 1275 if (err)
1276 return err;
0a6e7778
PJV		 1277
1278 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1279
1280 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
8cb08174
JB		 1281 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1282 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1283 enc_opts_policy, extack);
63c82997
JK		 1284 if (err)
1285 return err;
1286
0a6e7778
PJV		 1287 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1288 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
c96adff9
CW		 1289 if (!nla_ok(nla_opt_msk, msk_depth)) {
1290 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1291 return -EINVAL;
1292 }
0a6e7778
PJV		 1293 }
1294
1295 nla_for_each_attr(nla_opt_key, nla_enc_key,
1296 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1297 switch (nla_type(nla_opt_key)) {
1298 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
d8f9dfae
XL		 1299 if (key->enc_opts.dst_opt_type &&
1300 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1301 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1302 return -EINVAL;
1303 }
0a6e7778
PJV		 1304 option_len = 0;
1305 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1306 option_len = fl_set_geneve_opt(nla_opt_key, key,
1307 key_depth, option_len,
1308 extack);
1309 if (option_len < 0)
1310 return option_len;
1311
1312 key->enc_opts.len += option_len;
1313 /* At the same time we need to parse through the mask
1314 * in order to verify exact and mask attribute lengths.
1315 */
1316 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1317 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1318 msk_depth, option_len,
1319 extack);
1320 if (option_len < 0)
1321 return option_len;
1322
1323 mask->enc_opts.len += option_len;
1324 if (key->enc_opts.len != mask->enc_opts.len) {
1325 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1326 return -EINVAL;
1327 }
d8f9dfae
XL		 1328 break;
1329 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1330 if (key->enc_opts.dst_opt_type) {
1331 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1332 return -EINVAL;
1333 }
1334 option_len = 0;
1335 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1336 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1337 key_depth, option_len,
1338 extack);
1339 if (option_len < 0)
1340 return option_len;
1341
1342 key->enc_opts.len += option_len;
1343 /* At the same time we need to parse through the mask
1344 * in order to verify exact and mask attribute lengths.
1345 */
1346 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1347 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1348 msk_depth, option_len,
1349 extack);
1350 if (option_len < 0)
1351 return option_len;
1352
1353 mask->enc_opts.len += option_len;
1354 if (key->enc_opts.len != mask->enc_opts.len) {
1355 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1356 return -EINVAL;
1357 }
79b1011c
XL		 1358 break;
1359 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1360 if (key->enc_opts.dst_opt_type) {
1361 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1362 return -EINVAL;
1363 }
1364 option_len = 0;
1365 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1366 option_len = fl_set_erspan_opt(nla_opt_key, key,
1367 key_depth, option_len,
1368 extack);
1369 if (option_len < 0)
1370 return option_len;
1371
1372 key->enc_opts.len += option_len;
1373 /* At the same time we need to parse through the mask
1374 * in order to verify exact and mask attribute lengths.
1375 */
1376 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1377 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1378 msk_depth, option_len,
1379 extack);
1380 if (option_len < 0)
1381 return option_len;
1382
1383 mask->enc_opts.len += option_len;
1384 if (key->enc_opts.len != mask->enc_opts.len) {
1385 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1386 return -EINVAL;
1387 }
0a6e7778
PJV		 1388 break;
1389 default:
1390 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1391 return -EINVAL;
1392 }
c96adff9
CW		 1393
1394 if (!msk_depth)
1395 continue;
1396
1397 if (!nla_ok(nla_opt_msk, msk_depth)) {
1398 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1399 return -EINVAL;
1400 }
1401 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
0a6e7778
PJV		 1402 }
1403
1404 return 0;
1405}
1406
1bcc51ac 1407static int fl_validate_ct_state(u16 state, struct nlattr *tb,
1408 struct netlink_ext_ack *extack)
1409{
1410 if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
1411 NL_SET_ERR_MSG_ATTR(extack, tb,
1412 "no trk, so no other flag can be set");
1413 return -EINVAL;
1414 }
1415
1416 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1417 state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
1418 NL_SET_ERR_MSG_ATTR(extack, tb,
1419 "new and est are mutually exclusive");
1420 return -EINVAL;
1421 }
1422
3aed8b63 1423 if (state & TCA_FLOWER_KEY_CT_FLAGS_INVALID &&
1424 state & ~(TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
1425 TCA_FLOWER_KEY_CT_FLAGS_INVALID)) {
1426 NL_SET_ERR_MSG_ATTR(extack, tb,
1427 "when inv is set, only trk may be set");
1428 return -EINVAL;
1429 }
1430
1431 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1432 state & TCA_FLOWER_KEY_CT_FLAGS_REPLY) {
1433 NL_SET_ERR_MSG_ATTR(extack, tb,
1434 "new and rpl are mutually exclusive");
1435 return -EINVAL;
1436 }
1437
1bcc51ac 1438 return 0;
1439}
1440
e0ace68a
PB		 1441static int fl_set_key_ct(struct nlattr **tb,
1442 struct flow_dissector_key_ct *key,
1443 struct flow_dissector_key_ct *mask,
1444 struct netlink_ext_ack *extack)
1445{
1446 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1bcc51ac 1447 int err;
1448
e0ace68a
PB		 1449 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1450 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1451 return -EOPNOTSUPP;
1452 }
1453 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1454 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1455 sizeof(key->ct_state));
1bcc51ac 1456
afa536d8 1457 err = fl_validate_ct_state(key->ct_state & mask->ct_state,
1bcc51ac 1458 tb[TCA_FLOWER_KEY_CT_STATE_MASK],
1459 extack);
1460 if (err)
1461 return err;
1462
e0ace68a
PB		 1463 }
1464 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1465 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1466 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1467 return -EOPNOTSUPP;
1468 }
1469 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1470 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1471 sizeof(key->ct_zone));
1472 }
1473 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1474 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1475 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1476 return -EOPNOTSUPP;
1477 }
1478 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1479 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1480 sizeof(key->ct_mark));
1481 }
1482 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1483 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1484 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1485 return -EOPNOTSUPP;
1486 }
1487 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1488 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1489 sizeof(key->ct_labels));
1490 }
1491
1492 return 0;
1493}
1494
77b9900e 1495static int fl_set_key(struct net *net, struct nlattr **tb,
1057c55f
AA		 1496 struct fl_flow_key *key, struct fl_flow_key *mask,
1497 struct netlink_ext_ack *extack)
77b9900e 1498{
9399ae9a 1499 __be16 ethertype;
d9724772 1500 int ret = 0;
a5148626 1501
77b9900e 1502 if (tb[TCA_FLOWER_INDEV]) {
1057c55f 1503 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
77b9900e
JP		 1504 if (err < 0)
1505 return err;
8212ed77
JP		 1506 key->meta.ingress_ifindex = err;
1507 mask->meta.ingress_ifindex = 0xffffffff;
77b9900e
JP		 1508 }
1509
1510 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1511 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1512 sizeof(key->eth.dst));
1513 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1514 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1515 sizeof(key->eth.src));
66530bdf 1516
0b498a52 1517 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 1518 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1519
aaab0834 1520 if (eth_type_vlan(ethertype)) {
d64efd09
JL		 1521 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1522 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1523 &mask->vlan);
1524
5e9a0fe4
JL		 1525 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1526 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1527 if (eth_type_vlan(ethertype)) {
1528 fl_set_key_vlan(tb, ethertype,
1529 TCA_FLOWER_KEY_CVLAN_ID,
1530 TCA_FLOWER_KEY_CVLAN_PRIO,
1531 &key->cvlan, &mask->cvlan);
1532 fl_set_key_val(tb, &key->basic.n_proto,
1533 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1534 &mask->basic.n_proto,
1535 TCA_FLOWER_UNSPEC,
1536 sizeof(key->basic.n_proto));
1537 } else {
1538 key->basic.n_proto = ethertype;
1539 mask->basic.n_proto = cpu_to_be16(~0);
1540 }
d64efd09 1541 }
0b498a52
AB		 1542 } else {
1543 key->basic.n_proto = ethertype;
1544 mask->basic.n_proto = cpu_to_be16(~0);
1545 }
9399ae9a 1546 }
66530bdf 1547
77b9900e
JP		 1548 if (key->basic.n_proto == htons(ETH_P_IP) ||
1549 key->basic.n_proto == htons(ETH_P_IPV6)) {
1550 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1551 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1552 sizeof(key->basic.ip_proto));
0e2c17b6 1553 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
77b9900e 1554 }
66530bdf
JHS		 1555
1556 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1557 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1558 mask->control.addr_type = ~0;
77b9900e
JP		 1559 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1560 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1561 sizeof(key->ipv4.src));
1562 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1563 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1564 sizeof(key->ipv4.dst));
66530bdf
JHS		 1565 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1566 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1567 mask->control.addr_type = ~0;
77b9900e
JP		 1568 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1569 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1570 sizeof(key->ipv6.src));
1571 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1572 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1573 sizeof(key->ipv6.dst));
1574 }
66530bdf 1575
77b9900e
JP		 1576 if (key->basic.ip_proto == IPPROTO_TCP) {
1577 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1578 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1579 sizeof(key->tp.src));
1580 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1581 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 1582 sizeof(key->tp.dst));
fdfc7dd6
JP		 1583 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1584 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1585 sizeof(key->tcp.flags));
77b9900e
JP		 1586 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1587 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1588 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1589 sizeof(key->tp.src));
1590 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1591 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 1592 sizeof(key->tp.dst));
5976c5f4
SH		 1593 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1594 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1595 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1596 sizeof(key->tp.src));
1597 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1598 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1599 sizeof(key->tp.dst));
7b684884
SH		 1600 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1601 key->basic.ip_proto == IPPROTO_ICMP) {
1602 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1603 &mask->icmp.type,
1604 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1605 sizeof(key->icmp.type));
1606 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1607 &mask->icmp.code,
1608 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1609 sizeof(key->icmp.code));
1610 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1611 key->basic.ip_proto == IPPROTO_ICMPV6) {
1612 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1613 &mask->icmp.type,
1614 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1615 sizeof(key->icmp.type));
040587af 1616 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 1617 &mask->icmp.code,
040587af 1618 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 1619 sizeof(key->icmp.code));
a577d8f7
BL		 1620 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1621 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
442f730e 1622 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1a7fca63
BL		 1623 if (ret)
1624 return ret;
99d31326
SH		 1625 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1626 key->basic.n_proto == htons(ETH_P_RARP)) {
1627 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1628 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1629 sizeof(key->arp.sip));
1630 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1631 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1632 sizeof(key->arp.tip));
1633 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1634 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1635 sizeof(key->arp.op));
1636 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1637 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1638 sizeof(key->arp.sha));
1639 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1640 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1641 sizeof(key->arp.tha));
77b9900e
JP		 1642 }
1643
5c72299f
AN		 1644 if (key->basic.ip_proto == IPPROTO_TCP ||
1645 key->basic.ip_proto == IPPROTO_UDP ||
1646 key->basic.ip_proto == IPPROTO_SCTP) {
bd7d4c12 1647 ret = fl_set_key_port_range(tb, key, mask, extack);
5c72299f
AN		 1648 if (ret)
1649 return ret;
1650 }
1651
bc3103f1
AV		 1652 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1653 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1654 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 1655 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1656 fl_set_key_val(tb, &key->enc_ipv4.src,
1657 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1658 &mask->enc_ipv4.src,
1659 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1660 sizeof(key->enc_ipv4.src));
1661 fl_set_key_val(tb, &key->enc_ipv4.dst,
1662 TCA_FLOWER_KEY_ENC_IPV4_DST,
1663 &mask->enc_ipv4.dst,
1664 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1665 sizeof(key->enc_ipv4.dst));
1666 }
1667
1668 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1669 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1670 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 1671 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 1672 fl_set_key_val(tb, &key->enc_ipv6.src,
1673 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1674 &mask->enc_ipv6.src,
1675 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1676 sizeof(key->enc_ipv6.src));
1677 fl_set_key_val(tb, &key->enc_ipv6.dst,
1678 TCA_FLOWER_KEY_ENC_IPV6_DST,
1679 &mask->enc_ipv6.dst,
1680 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1681 sizeof(key->enc_ipv6.dst));
1682 }
1683
1684 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1685 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 1686 sizeof(key->enc_key_id.keyid));
1687
f4d997fd
HHZ		 1688 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1689 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1690 sizeof(key->enc_tp.src));
1691
1692 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1693 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1694 sizeof(key->enc_tp.dst));
1695
0e2c17b6
OG		 1696 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1697
5923b8f7
AL		 1698 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1699 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1700 sizeof(key->hash.hash));
1701
0a6e7778
PJV		 1702 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1703 ret = fl_set_enc_opt(tb, key, mask, extack);
1704 if (ret)
1705 return ret;
1706 }
1707
e0ace68a
PB		 1708 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1709 if (ret)
1710 return ret;
1711
d9724772 1712 if (tb[TCA_FLOWER_KEY_FLAGS])
e304e21a
GN		 1713 ret = fl_set_key_flags(tb, &key->control.flags,
1714 &mask->control.flags, extack);
faa3ffce 1715
d9724772 1716 return ret;
77b9900e
JP		 1717}
1718
05cd271f
PB		 1719static void fl_mask_copy(struct fl_flow_mask *dst,
1720 struct fl_flow_mask *src)
77b9900e 1721{
05cd271f
PB		 1722 const void *psrc = fl_key_get_start(&src->key, src);
1723 void *pdst = fl_key_get_start(&dst->key, src);
77b9900e 1724
05cd271f
PB		 1725 memcpy(pdst, psrc, fl_mask_range(src));
1726 dst->range = src->range;
77b9900e
JP		 1727}
1728
1729static const struct rhashtable_params fl_ht_params = {
1730 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1731 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1732 .automatic_shrinking = true,
1733};
1734
05cd271f 1735static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
77b9900e 1736{
05cd271f
PB		 1737 mask->filter_ht_params = fl_ht_params;
1738 mask->filter_ht_params.key_len = fl_mask_range(mask);
1739 mask->filter_ht_params.key_offset += mask->range.start;
77b9900e 1740
05cd271f 1741 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
77b9900e
JP		 1742}
1743
1744#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
c593642c 1745#define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
77b9900e 1746
339ba878
HHZ		 1747#define FL_KEY_IS_MASKED(mask, member) \
1748 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1749 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 1750
1751#define FL_KEY_SET(keys, cnt, id, member) \
1752 do { \
1753 keys[cnt].key_id = id; \
1754 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1755 cnt++; \
1756 } while(0);
1757
339ba878 1758#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 1759 do { \
339ba878 1760 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 1761 FL_KEY_SET(keys, cnt, id, member); \
1762 } while(0);
1763
33fb5cba
JP		 1764static void fl_init_dissector(struct flow_dissector *dissector,
1765 struct fl_flow_key *mask)
77b9900e
JP		 1766{
1767 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1768 size_t cnt = 0;
1769
8212ed77
JP		 1770 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1771 FLOW_DISSECTOR_KEY_META, meta);
42aecaa9 1772 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 1773 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
33fb5cba 1774 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1775 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
33fb5cba 1776 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1777 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
33fb5cba 1778 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
339ba878 1779 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
8ffb055b
YK		 1780 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1781 FLOW_DISSECTOR_KEY_PORTS, tp);
1782 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1783 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
33fb5cba 1784 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
4d80cc0a 1785 FLOW_DISSECTOR_KEY_IP, ip);
33fb5cba 1786 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
fdfc7dd6 1787 FLOW_DISSECTOR_KEY_TCP, tcp);
33fb5cba 1788 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
7b684884 1789 FLOW_DISSECTOR_KEY_ICMP, icmp);
33fb5cba 1790 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
99d31326 1791 FLOW_DISSECTOR_KEY_ARP, arp);
33fb5cba 1792 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
a577d8f7 1793 FLOW_DISSECTOR_KEY_MPLS, mpls);
33fb5cba 1794 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
9399ae9a 1795 FLOW_DISSECTOR_KEY_VLAN, vlan);
33fb5cba 1796 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
d64efd09 1797 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
33fb5cba 1798 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1799 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
33fb5cba 1800 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1801 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
33fb5cba 1802 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
519d1052 1803 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
33fb5cba
JP		 1804 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1805 FL_KEY_IS_MASKED(mask, enc_ipv6))
519d1052
HHZ		 1806 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1807 enc_control);
33fb5cba 1808 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
f4d997fd 1809 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
33fb5cba 1810 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
0e2c17b6 1811 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
0a6e7778
PJV		 1812 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1813 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
e0ace68a
PB		 1814 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1815 FLOW_DISSECTOR_KEY_CT, ct);
5923b8f7
AL		 1816 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1817 FLOW_DISSECTOR_KEY_HASH, hash);
77b9900e 1818
33fb5cba 1819 skb_flow_dissector_init(dissector, keys, cnt);
05cd271f
PB		 1820}
1821
1822static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1823 struct fl_flow_mask *mask)
1824{
1825 struct fl_flow_mask *newmask;
1826 int err;
1827
1828 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1829 if (!newmask)
1830 return ERR_PTR(-ENOMEM);
1831
1832 fl_mask_copy(newmask, mask);
1833
8ffb055b
YK		 1834 if ((newmask->key.tp_range.tp_min.dst &&
1835 newmask->key.tp_range.tp_max.dst) ||
1836 (newmask->key.tp_range.tp_min.src &&
1837 newmask->key.tp_range.tp_max.src))
5c72299f
AN		 1838 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1839
05cd271f
PB		 1840 err = fl_init_mask_hashtable(newmask);
1841 if (err)
1842 goto errout_free;
1843
33fb5cba 1844 fl_init_dissector(&newmask->dissector, &newmask->key);
05cd271f
PB		 1845
1846 INIT_LIST_HEAD_RCU(&newmask->filters);
1847
f48ef4d5 1848 refcount_set(&newmask->refcnt, 1);
195c234d
VB		 1849 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1850 &newmask->ht_node, mask_ht_params);
05cd271f
PB		 1851 if (err)
1852 goto errout_destroy;
1853
259e60f9 1854 spin_lock(&head->masks_lock);
05cd271f 1855 list_add_tail_rcu(&newmask->list, &head->masks);
259e60f9 1856 spin_unlock(&head->masks_lock);
05cd271f
PB		 1857
1858 return newmask;
1859
1860errout_destroy:
1861 rhashtable_destroy(&newmask->ht);
1862errout_free:
1863 kfree(newmask);
1864
1865 return ERR_PTR(err);
77b9900e
JP		 1866}
1867
1868static int fl_check_assign_mask(struct cls_fl_head *head,
05cd271f
PB		 1869 struct cls_fl_filter *fnew,
1870 struct cls_fl_filter *fold,
77b9900e
JP		 1871 struct fl_flow_mask *mask)
1872{
05cd271f 1873 struct fl_flow_mask *newmask;
f48ef4d5 1874 int ret = 0;
77b9900e 1875
f48ef4d5 1876 rcu_read_lock();
195c234d
VB		 1877
1878 /* Insert mask as temporary node to prevent concurrent creation of mask
1879 * with same key. Any concurrent lookups with same key will return
99815f50 1880 * -EAGAIN because mask's refcnt is zero.
195c234d
VB		 1881 */
1882 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1883 &mask->ht_node,
1884 mask_ht_params);
05cd271f 1885 if (!fnew->mask) {
f48ef4d5
VB		 1886 rcu_read_unlock();
1887
195c234d
VB		 1888 if (fold) {
1889 ret = -EINVAL;
1890 goto errout_cleanup;
1891 }
77b9900e 1892
05cd271f 1893 newmask = fl_create_new_mask(head, mask);
195c234d
VB		 1894 if (IS_ERR(newmask)) {
1895 ret = PTR_ERR(newmask);
1896 goto errout_cleanup;
1897 }
77b9900e 1898
05cd271f 1899 fnew->mask = newmask;
f48ef4d5 1900 return 0;
195c234d
VB		 1901 } else if (IS_ERR(fnew->mask)) {
1902 ret = PTR_ERR(fnew->mask);
f6521c58 1903 } else if (fold && fold->mask != fnew->mask) {
f48ef4d5
VB		 1904 ret = -EINVAL;
1905 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1906 /* Mask was deleted concurrently, try again */
1907 ret = -EAGAIN;
05cd271f 1908 }
f48ef4d5
VB		 1909 rcu_read_unlock();
1910 return ret;
195c234d
VB		 1911
1912errout_cleanup:
1913 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1914 mask_ht_params);
195c234d 1915 return ret;
77b9900e
JP		 1916}
1917
1918static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1919 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1920 unsigned long base, struct nlattr **tb,
695176bf 1921 struct nlattr *est,
c86e0209
BZ		 1922 struct fl_flow_tmplt *tmplt,
1923 u32 flags, u32 fl_flags,
50a56190 1924 struct netlink_ext_ack *extack)
77b9900e 1925{
77b9900e
JP		 1926 int err;
1927
c86e0209
BZ		 1928 err = tcf_exts_validate_ex(net, tp, tb, est, &f->exts, flags,
1929 fl_flags, extack);
77b9900e
JP		 1930 if (err < 0)
1931 return err;
1932
1933 if (tb[TCA_FLOWER_CLASSID]) {
1934 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
695176bf 1935 if (flags & TCA_ACT_FLAGS_NO_RTNL)
c24e43d8 1936 rtnl_lock();
77b9900e 1937 tcf_bind_filter(tp, &f->res, base);
695176bf 1938 if (flags & TCA_ACT_FLAGS_NO_RTNL)
c24e43d8 1939 rtnl_unlock();
77b9900e
JP		 1940 }
1941
1057c55f 1942 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
77b9900e 1943 if (err)
45507529 1944 return err;
77b9900e
JP		 1945
1946 fl_mask_update_range(mask);
1947 fl_set_masked_key(&f->mkey, &f->key, mask);
1948
b95ec7eb
JP		 1949 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1950 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1951 return -EINVAL;
1952 }
1953
77b9900e 1954 return 0;
77b9900e
JP		 1955}
1956
1f17f774
VB		 1957static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1958 struct cls_fl_filter *fold,
1959 bool *in_ht)
1960{
1961 struct fl_flow_mask *mask = fnew->mask;
1962 int err;
1963
9e35552a
VB		 1964 err = rhashtable_lookup_insert_fast(&mask->ht,
1965 &fnew->ht_node,
1966 mask->filter_ht_params);
1f17f774
VB		 1967 if (err) {
1968 *in_ht = false;
1969 /* It is okay if filter with same key exists when
1970 * overwriting.
1971 */
1972 return fold && err == -EEXIST ? 0 : err;
1973 }
1974
1975 *in_ht = true;
1976 return 0;
1977}
1978
77b9900e
JP		 1979static int fl_change(struct net *net, struct sk_buff *in_skb,
1980 struct tcf_proto *tp, unsigned long base,
1981 u32 handle, struct nlattr **tca,
695176bf 1982 void **arg, u32 flags,
12db03b6 1983 struct netlink_ext_ack *extack)
77b9900e 1984{
e474619a 1985 struct cls_fl_head *head = fl_head_dereference(tp);
695176bf 1986 bool rtnl_held = !(flags & TCA_ACT_FLAGS_NO_RTNL);
8113c095 1987 struct cls_fl_filter *fold = *arg;
77b9900e 1988 struct cls_fl_filter *fnew;
2cddd201 1989 struct fl_flow_mask *mask;
39b7b6a6 1990 struct nlattr **tb;
1f17f774 1991 bool in_ht;
77b9900e
JP		 1992 int err;
1993
06177558
VB		 1994 if (!tca[TCA_OPTIONS]) {
1995 err = -EINVAL;
1996 goto errout_fold;
1997 }
77b9900e 1998
2cddd201 1999 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
06177558
VB		 2000 if (!mask) {
2001 err = -ENOBUFS;
2002 goto errout_fold;
2003 }
39b7b6a6 2004
2cddd201
IV		 2005 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2006 if (!tb) {
2007 err = -ENOBUFS;
2008 goto errout_mask_alloc;
2009 }
2010
8cb08174
JB		 2011 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2012 tca[TCA_OPTIONS], fl_policy, NULL);
77b9900e 2013 if (err < 0)
39b7b6a6 2014 goto errout_tb;
77b9900e 2015
39b7b6a6
AB		 2016 if (fold && handle && fold->handle != handle) {
2017 err = -EINVAL;
2018 goto errout_tb;
2019 }
77b9900e
JP		 2020
2021 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 2022 if (!fnew) {
2023 err = -ENOBUFS;
2024 goto errout_tb;
2025 }
c049d56e 2026 INIT_LIST_HEAD(&fnew->hw_list);
06177558 2027 refcount_set(&fnew->refcnt, 1);
77b9900e 2028
14215108 2029 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
b9a24bb7
WC		 2030 if (err < 0)
2031 goto errout;
77b9900e 2032
e69985c6
AV		 2033 if (tb[TCA_FLOWER_FLAGS]) {
2034 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
2035
2036 if (!tc_flags_valid(fnew->flags)) {
2037 err = -EINVAL;
ecb3dea4 2038 goto errout;
e69985c6
AV		 2039 }
2040 }
5b33f488 2041
695176bf 2042 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE],
c86e0209
BZ		 2043 tp->chain->tmplt_priv, flags, fnew->flags,
2044 extack);
77b9900e 2045 if (err)
ecb3dea4 2046 goto errout;
77b9900e 2047
2cddd201 2048 err = fl_check_assign_mask(head, fnew, fold, mask);
77b9900e 2049 if (err)
ecb3dea4
VB		 2050 goto errout;
2051
1f17f774
VB		 2052 err = fl_ht_insert_unique(fnew, fold, &in_ht);
2053 if (err)
2054 goto errout_mask;
2055
79685219 2056 if (!tc_skip_hw(fnew->flags)) {
c24e43d8 2057 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
79685219 2058 if (err)
1f17f774 2059 goto errout_ht;
79685219 2060 }
5b33f488 2061
55593960
OG		 2062 if (!tc_in_hw(fnew->flags))
2063 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2064
3d81e711
VB		 2065 spin_lock(&tp->lock);
2066
272ffaad
VB		 2067 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2068 * proto again or create new one, if necessary.
2069 */
2070 if (tp->deleting) {
2071 err = -EAGAIN;
2072 goto errout_hw;
2073 }
2074
5b33f488 2075 if (fold) {
b2552b8c
VB		 2076 /* Fold filter was deleted concurrently. Retry lookup. */
2077 if (fold->deleted) {
2078 err = -EAGAIN;
2079 goto errout_hw;
2080 }
2081
620da486
VB		 2082 fnew->handle = handle;
2083
1f17f774
VB		 2084 if (!in_ht) {
2085 struct rhashtable_params params =
2086 fnew->mask->filter_ht_params;
2087
2088 err = rhashtable_insert_fast(&fnew->mask->ht,
2089 &fnew->ht_node,
2090 params);
2091 if (err)
2092 goto errout_hw;
2093 in_ht = true;
2094 }
620da486 2095
c049d56e 2096 refcount_inc(&fnew->refcnt);
599d2570
RD		 2097 rhashtable_remove_fast(&fold->mask->ht,
2098 &fold->ht_node,
2099 fold->mask->filter_ht_params);
234a4624 2100 idr_replace(&head->handle_idr, fnew, fnew->handle);
ff3532f2 2101 list_replace_rcu(&fold->list, &fnew->list);
b2552b8c 2102 fold->deleted = true;
620da486 2103
3d81e711
VB		 2104 spin_unlock(&tp->lock);
2105
9994677c 2106 fl_mask_put(head, fold->mask);
620da486 2107 if (!tc_skip_hw(fold->flags))
c24e43d8 2108 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
77b9900e 2109 tcf_unbind_filter(tp, &fold->res);
06177558
VB		 2110 /* Caller holds reference to fold, so refcnt is always > 0
2111 * after this.
2112 */
2113 refcount_dec(&fold->refcnt);
2114 __fl_put(fold);
77b9900e 2115 } else {
620da486
VB		 2116 if (handle) {
2117 /* user specifies a handle and it doesn't exist */
2118 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2119 handle, GFP_ATOMIC);
9a2d9389
VB		 2120
2121 /* Filter with specified handle was concurrently
2122 * inserted after initial check in cls_api. This is not
2123 * necessarily an error if NLM_F_EXCL is not set in
2124 * message flags. Returning EAGAIN will cause cls_api to
2125 * try to update concurrently inserted rule.
2126 */
2127 if (err == -ENOSPC)
2128 err = -EAGAIN;
620da486
VB		 2129 } else {
2130 handle = 1;
2131 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2132 INT_MAX, GFP_ATOMIC);
2133 }
2134 if (err)
2135 goto errout_hw;
2136
c049d56e 2137 refcount_inc(&fnew->refcnt);
620da486 2138 fnew->handle = handle;
05cd271f 2139 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
3d81e711 2140 spin_unlock(&tp->lock);
77b9900e
JP		 2141 }
2142
620da486
VB		 2143 *arg = fnew;
2144
39b7b6a6 2145 kfree(tb);
99815f50 2146 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
77b9900e
JP		 2147 return 0;
2148
c049d56e
VB		 2149errout_ht:
2150 spin_lock(&tp->lock);
620da486 2151errout_hw:
c049d56e 2152 fnew->deleted = true;
3d81e711 2153 spin_unlock(&tp->lock);
620da486 2154 if (!tc_skip_hw(fnew->flags))
c24e43d8 2155 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1f17f774
VB		 2156 if (in_ht)
2157 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2158 fnew->mask->filter_ht_params);
ecb3dea4 2159errout_mask:
9994677c 2160 fl_mask_put(head, fnew->mask);
77b9900e 2161errout:
c049d56e 2162 __fl_put(fnew);
39b7b6a6
AB		 2163errout_tb:
2164 kfree(tb);
2cddd201 2165errout_mask_alloc:
99815f50 2166 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
06177558
VB		 2167errout_fold:
2168 if (fold)
2169 __fl_put(fold);
77b9900e
JP		 2170 return err;
2171}
2172
571acf21 2173static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
12db03b6 2174 bool rtnl_held, struct netlink_ext_ack *extack)
77b9900e 2175{
e474619a 2176 struct cls_fl_head *head = fl_head_dereference(tp);
8113c095 2177 struct cls_fl_filter *f = arg;
b2552b8c
VB		 2178 bool last_on_mask;
2179 int err = 0;
77b9900e 2180
c24e43d8 2181 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
05cd271f 2182 *last = list_empty(&head->masks);
06177558
VB		 2183 __fl_put(f);
2184
b2552b8c 2185 return err;
77b9900e
JP		 2186}
2187
12db03b6
VB		 2188static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2189 bool rtnl_held)
77b9900e 2190{
d39d7149
CW		 2191 struct cls_fl_head *head = fl_head_dereference(tp);
2192 unsigned long id = arg->cookie, tmp;
77b9900e 2193 struct cls_fl_filter *f;
05cd271f 2194
01683a14
VB		 2195 arg->count = arg->skip;
2196
d5ef1906 2197 rcu_read_lock();
d39d7149
CW		 2198 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2199 /* don't return filters that are being deleted */
2200 if (!refcount_inc_not_zero(&f->refcnt))
2201 continue;
d5ef1906
VB		 2202 rcu_read_unlock();
2203
01683a14 2204 if (arg->fn(tp, f, arg) < 0) {
06177558 2205 __fl_put(f);
01683a14 2206 arg->stop = 1;
d5ef1906 2207 rcu_read_lock();
01683a14 2208 break;
05cd271f 2209 }
06177558 2210 __fl_put(f);
01683a14 2211 arg->count++;
d5ef1906 2212 rcu_read_lock();
77b9900e 2213 }
d5ef1906 2214 rcu_read_unlock();
d39d7149 2215 arg->cookie = id;
77b9900e
JP		 2216}
2217
c049d56e
VB		 2218static struct cls_fl_filter *
2219fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2220{
2221 struct cls_fl_head *head = fl_head_dereference(tp);
2222
2223 spin_lock(&tp->lock);
2224 if (list_empty(&head->hw_filters)) {
2225 spin_unlock(&tp->lock);
2226 return NULL;
2227 }
2228
2229 if (!f)
2230 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2231 hw_list);
2232 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2233 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2234 spin_unlock(&tp->lock);
2235 return f;
2236 }
2237 }
2238
2239 spin_unlock(&tp->lock);
2240 return NULL;
2241}
2242
a7323311 2243static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
31533cba
JH		 2244 void *cb_priv, struct netlink_ext_ack *extack)
2245{
31533cba 2246 struct tcf_block *block = tp->chain->block;
f9e30088 2247 struct flow_cls_offload cls_flower = {};
c049d56e 2248 struct cls_fl_filter *f = NULL;
31533cba
JH		 2249 int err;
2250
c049d56e
VB		 2251 /* hw_filters list can only be changed by hw offload functions after
2252 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2253 * iterating it.
2254 */
2255 ASSERT_RTNL();
3a7b6861 2256
c049d56e 2257 while ((f = fl_get_next_hw_filter(tp, f, add))) {
95e27a4d
JH		 2258 cls_flower.rule =
2259 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2260 if (!cls_flower.rule) {
2261 __fl_put(f);
2262 return -ENOMEM;
2263 }
31533cba 2264
95e27a4d 2265 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
d6787147 2266 extack);
95e27a4d 2267 cls_flower.command = add ?
f9e30088 2268 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
95e27a4d
JH		 2269 cls_flower.cookie = (unsigned long)f;
2270 cls_flower.rule->match.dissector = &f->mask->dissector;
2271 cls_flower.rule->match.mask = &f->mask->key;
2272 cls_flower.rule->match.key = &f->mkey;
2273
9c1c0e12 2274 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts);
95e27a4d 2275 if (err) {
8f256622 2276 kfree(cls_flower.rule);
95e27a4d
JH		 2277 if (tc_skip_sw(f->flags)) {
2278 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
2279 __fl_put(f);
2280 return err;
31533cba 2281 }
95e27a4d
JH		 2282 goto next_flow;
2283 }
31533cba 2284
95e27a4d
JH		 2285 cls_flower.classid = f->res.classid;
2286
40119211
VB		 2287 err = tc_setup_cb_reoffload(block, tp, add, cb,
2288 TC_SETUP_CLSFLOWER, &cls_flower,
2289 cb_priv, &f->flags,
2290 &f->in_hw_count);
9c1c0e12 2291 tc_cleanup_offload_action(&cls_flower.rule->action);
95e27a4d
JH		 2292 kfree(cls_flower.rule);
2293
2294 if (err) {
40119211
VB		 2295 __fl_put(f);
2296 return err;
31533cba 2297 }
95e27a4d 2298next_flow:
95e27a4d 2299 __fl_put(f);
31533cba
JH		 2300 }
2301
2302 return 0;
2303}
2304
a449a3e7
VB		 2305static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2306{
2307 struct flow_cls_offload *cls_flower = type_data;
2308 struct cls_fl_filter *f =
2309 (struct cls_fl_filter *) cls_flower->cookie;
2310 struct cls_fl_head *head = fl_head_dereference(tp);
2311
2312 spin_lock(&tp->lock);
2313 list_add(&f->hw_list, &head->hw_filters);
2314 spin_unlock(&tp->lock);
2315}
2316
2317static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2318{
2319 struct flow_cls_offload *cls_flower = type_data;
2320 struct cls_fl_filter *f =
2321 (struct cls_fl_filter *) cls_flower->cookie;
2322
2323 spin_lock(&tp->lock);
2324 if (!list_empty(&f->hw_list))
2325 list_del_init(&f->hw_list);
2326 spin_unlock(&tp->lock);
2327}
2328
8f256622
PNA		 2329static int fl_hw_create_tmplt(struct tcf_chain *chain,
2330 struct fl_flow_tmplt *tmplt)
34738452 2331{
f9e30088 2332 struct flow_cls_offload cls_flower = {};
34738452 2333 struct tcf_block *block = chain->block;
34738452 2334
e3ab786b 2335 cls_flower.rule = flow_rule_alloc(0);
8f256622
PNA		 2336 if (!cls_flower.rule)
2337 return -ENOMEM;
2338
34738452 2339 cls_flower.common.chain_index = chain->index;
f9e30088 2340 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
34738452 2341 cls_flower.cookie = (unsigned long) tmplt;
8f256622
PNA		 2342 cls_flower.rule->match.dissector = &tmplt->dissector;
2343 cls_flower.rule->match.mask = &tmplt->mask;
2344 cls_flower.rule->match.key = &tmplt->dummy_key;
34738452
JP		 2345
2346 /* We don't care if driver (any of them) fails to handle this
2347 * call. It serves just as a hint for it.
2348 */
40119211 2349 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
8f256622
PNA		 2350 kfree(cls_flower.rule);
2351
2352 return 0;
34738452
JP		 2353}
2354
2355static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2356 struct fl_flow_tmplt *tmplt)
2357{
f9e30088 2358 struct flow_cls_offload cls_flower = {};
34738452
JP		 2359 struct tcf_block *block = chain->block;
2360
2361 cls_flower.common.chain_index = chain->index;
f9e30088 2362 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
34738452
JP		 2363 cls_flower.cookie = (unsigned long) tmplt;
2364
40119211 2365 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
34738452
JP		 2366}
2367
b95ec7eb
JP		 2368static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2369 struct nlattr **tca,
2370 struct netlink_ext_ack *extack)
2371{
2372 struct fl_flow_tmplt *tmplt;
2373 struct nlattr **tb;
2374 int err;
2375
2376 if (!tca[TCA_OPTIONS])
2377 return ERR_PTR(-EINVAL);
2378
2379 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2380 if (!tb)
2381 return ERR_PTR(-ENOBUFS);
8cb08174
JB		 2382 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2383 tca[TCA_OPTIONS], fl_policy, NULL);
b95ec7eb
JP		 2384 if (err)
2385 goto errout_tb;
2386
2387 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1cbc36a5
DC		 2388 if (!tmplt) {
2389 err = -ENOMEM;
b95ec7eb 2390 goto errout_tb;
1cbc36a5 2391 }
b95ec7eb
JP		 2392 tmplt->chain = chain;
2393 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2394 if (err)
2395 goto errout_tmplt;
b95ec7eb
JP		 2396
2397 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2398
8f256622
PNA		 2399 err = fl_hw_create_tmplt(chain, tmplt);
2400 if (err)
2401 goto errout_tmplt;
34738452 2402
8f256622 2403 kfree(tb);
b95ec7eb
JP		 2404 return tmplt;
2405
2406errout_tmplt:
2407 kfree(tmplt);
2408errout_tb:
2409 kfree(tb);
2410 return ERR_PTR(err);
2411}
2412
ec3ed293
VB		 2413static void fl_tmplt_destroy(void *tmplt_priv)
2414{
2415 struct fl_flow_tmplt *tmplt = tmplt_priv;
2416
95278dda
CW		 2417 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2418 kfree(tmplt);
ec3ed293
VB		 2419}
2420
77b9900e
JP		 2421static int fl_dump_key_val(struct sk_buff *skb,
2422 void *val, int val_type,
2423 void *mask, int mask_type, int len)
2424{
2425 int err;
2426
2427 if (!memchr_inv(mask, 0, len))
2428 return 0;
2429 err = nla_put(skb, val_type, len, val);
2430 if (err)
2431 return err;
2432 if (mask_type != TCA_FLOWER_UNSPEC) {
2433 err = nla_put(skb, mask_type, len, mask);
2434 if (err)
2435 return err;
2436 }
2437 return 0;
2438}
2439
5c72299f
AN		 2440static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2441 struct fl_flow_key *mask)
2442{
8ffb055b
YK		 2443 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2444 TCA_FLOWER_KEY_PORT_DST_MIN,
2445 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2446 sizeof(key->tp_range.tp_min.dst)) ||
2447 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2448 TCA_FLOWER_KEY_PORT_DST_MAX,
2449 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2450 sizeof(key->tp_range.tp_max.dst)) ||
2451 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2452 TCA_FLOWER_KEY_PORT_SRC_MIN,
2453 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2454 sizeof(key->tp_range.tp_min.src)) ||
2455 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2456 TCA_FLOWER_KEY_PORT_SRC_MAX,
2457 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2458 sizeof(key->tp_range.tp_max.src)))
5c72299f
AN		 2459 return -1;
2460
2461 return 0;
2462}
2463
61aec25a
GN		 2464static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2465 struct flow_dissector_key_mpls *mpls_key,
2466 struct flow_dissector_key_mpls *mpls_mask,
2467 u8 lse_index)
2468{
2469 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2470 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2471 int err;
2472
2473 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2474 lse_index + 1);
2475 if (err)
2476 return err;
2477
2478 if (lse_mask->mpls_ttl) {
2479 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2480 lse_key->mpls_ttl);
2481 if (err)
2482 return err;
2483 }
2484 if (lse_mask->mpls_bos) {
2485 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2486 lse_key->mpls_bos);
2487 if (err)
2488 return err;
2489 }
2490 if (lse_mask->mpls_tc) {
2491 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2492 lse_key->mpls_tc);
2493 if (err)
2494 return err;
2495 }
2496 if (lse_mask->mpls_label) {
7fdd375e
GN		 2497 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2498 lse_key->mpls_label);
61aec25a
GN		 2499 if (err)
2500 return err;
2501 }
2502
2503 return 0;
2504}
2505
2506static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2507 struct flow_dissector_key_mpls *mpls_key,
2508 struct flow_dissector_key_mpls *mpls_mask)
2509{
2510 struct nlattr *opts;
2511 struct nlattr *lse;
2512 u8 lse_index;
2513 int err;
2514
2515 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2516 if (!opts)
2517 return -EMSGSIZE;
2518
2519 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2520 if (!(mpls_mask->used_lses & 1 << lse_index))
2521 continue;
2522
2523 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2524 if (!lse) {
2525 err = -EMSGSIZE;
2526 goto err_opts;
2527 }
2528
2529 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2530 lse_index);
2531 if (err)
2532 goto err_opts_lse;
2533 nla_nest_end(skb, lse);
2534 }
2535 nla_nest_end(skb, opts);
2536
2537 return 0;
2538
2539err_opts_lse:
2540 nla_nest_cancel(skb, lse);
2541err_opts:
2542 nla_nest_cancel(skb, opts);
2543
2544 return err;
2545}
2546
a577d8f7
BL		 2547static int fl_dump_key_mpls(struct sk_buff *skb,
2548 struct flow_dissector_key_mpls *mpls_key,
2549 struct flow_dissector_key_mpls *mpls_mask)
2550{
58cff782
GN		 2551 struct flow_dissector_mpls_lse *lse_mask;
2552 struct flow_dissector_mpls_lse *lse_key;
a577d8f7
BL		 2553 int err;
2554
61aec25a 2555 if (!mpls_mask->used_lses)
a577d8f7 2556 return 0;
58cff782
GN		 2557
2558 lse_mask = &mpls_mask->ls[0];
2559 lse_key = &mpls_key->ls[0];
2560
61aec25a
GN		 2561 /* For backward compatibility, don't use the MPLS nested attributes if
2562 * the rule can be expressed using the old attributes.
2563 */
2564 if (mpls_mask->used_lses & ~1 ||
2565 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2566 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2567 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2568
58cff782 2569 if (lse_mask->mpls_ttl) {
a577d8f7 2570 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
58cff782 2571 lse_key->mpls_ttl);
a577d8f7
BL		 2572 if (err)
2573 return err;
2574 }
58cff782 2575 if (lse_mask->mpls_tc) {
a577d8f7 2576 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
58cff782 2577 lse_key->mpls_tc);
a577d8f7
BL		 2578 if (err)
2579 return err;
2580 }
58cff782 2581 if (lse_mask->mpls_label) {
a577d8f7 2582 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
58cff782 2583 lse_key->mpls_label);
a577d8f7
BL		 2584 if (err)
2585 return err;
2586 }
58cff782 2587 if (lse_mask->mpls_bos) {
a577d8f7 2588 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
58cff782 2589 lse_key->mpls_bos);
a577d8f7
BL		 2590 if (err)
2591 return err;
2592 }
2593 return 0;
2594}
2595
0e2c17b6 2596static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
4d80cc0a
OG		 2597 struct flow_dissector_key_ip *key,
2598 struct flow_dissector_key_ip *mask)
2599{
0e2c17b6
OG		 2600 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2601 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2602 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2603 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2604
2605 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2606 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
4d80cc0a
OG		 2607 return -1;
2608
2609 return 0;
2610}
2611
9399ae9a 2612static int fl_dump_key_vlan(struct sk_buff *skb,
d64efd09 2613 int vlan_id_key, int vlan_prio_key,
9399ae9a
HHZ		 2614 struct flow_dissector_key_vlan *vlan_key,
2615 struct flow_dissector_key_vlan *vlan_mask)
2616{
2617 int err;
2618
2619 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2620 return 0;
2621 if (vlan_mask->vlan_id) {
d64efd09 2622 err = nla_put_u16(skb, vlan_id_key,
9399ae9a
HHZ		 2623 vlan_key->vlan_id);
2624 if (err)
2625 return err;
2626 }
2627 if (vlan_mask->vlan_priority) {
d64efd09 2628 err = nla_put_u8(skb, vlan_prio_key,
9399ae9a
HHZ		 2629 vlan_key->vlan_priority);
2630 if (err)
2631 return err;
2632 }
2633 return 0;
2634}
2635
faa3ffce
OG		 2636static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2637 u32 *flower_key, u32 *flower_mask,
2638 u32 flower_flag_bit, u32 dissector_flag_bit)
2639{
2640 if (dissector_mask & dissector_flag_bit) {
2641 *flower_mask |= flower_flag_bit;
2642 if (dissector_key & dissector_flag_bit)
2643 *flower_key |= flower_flag_bit;
2644 }
2645}
2646
2647static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2648{
2649 u32 key, mask;
2650 __be32 _key, _mask;
2651 int err;
2652
2653 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2654 return 0;
2655
2656 key = 0;
2657 mask = 0;
2658
2659 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2660 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
459d153d
PJV		 2661 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2662 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2663 FLOW_DIS_FIRST_FRAG);
faa3ffce
OG		 2664
2665 _key = cpu_to_be32(key);
2666 _mask = cpu_to_be32(mask);
2667
2668 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2669 if (err)
2670 return err;
2671
2672 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2673}
2674
0a6e7778
PJV		 2675static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2676 struct flow_dissector_key_enc_opts *enc_opts)
2677{
2678 struct geneve_opt *opt;
2679 struct nlattr *nest;
2680 int opt_off = 0;
2681
ae0be8de 2682 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
0a6e7778
PJV		 2683 if (!nest)
2684 goto nla_put_failure;
2685
2686 while (enc_opts->len > opt_off) {
2687 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2688
2689 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2690 opt->opt_class))
2691 goto nla_put_failure;
2692 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2693 opt->type))
2694 goto nla_put_failure;
2695 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2696 opt->length * 4, opt->opt_data))
2697 goto nla_put_failure;
2698
2699 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2700 }
2701 nla_nest_end(skb, nest);
2702 return 0;
2703
2704nla_put_failure:
2705 nla_nest_cancel(skb, nest);
2706 return -EMSGSIZE;
2707}
2708
d8f9dfae
XL		 2709static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2710 struct flow_dissector_key_enc_opts *enc_opts)
2711{
2712 struct vxlan_metadata *md;
2713 struct nlattr *nest;
2714
2715 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2716 if (!nest)
2717 goto nla_put_failure;
2718
2719 md = (struct vxlan_metadata *)&enc_opts->data[0];
2720 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2721 goto nla_put_failure;
2722
2723 nla_nest_end(skb, nest);
2724 return 0;
2725
2726nla_put_failure:
2727 nla_nest_cancel(skb, nest);
2728 return -EMSGSIZE;
2729}
2730
79b1011c
XL		 2731static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2732 struct flow_dissector_key_enc_opts *enc_opts)
2733{
2734 struct erspan_metadata *md;
2735 struct nlattr *nest;
2736
2737 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2738 if (!nest)
2739 goto nla_put_failure;
2740
2741 md = (struct erspan_metadata *)&enc_opts->data[0];
2742 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2743 goto nla_put_failure;
2744
2745 if (md->version == 1 &&
2746 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2747 goto nla_put_failure;
2748
2749 if (md->version == 2 &&
2750 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2751 md->u.md2.dir) ||
2752 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2753 get_hwid(&md->u.md2))))
2754 goto nla_put_failure;
2755
2756 nla_nest_end(skb, nest);
2757 return 0;
2758
2759nla_put_failure:
2760 nla_nest_cancel(skb, nest);
2761 return -EMSGSIZE;
2762}
2763
e0ace68a
PB		 2764static int fl_dump_key_ct(struct sk_buff *skb,
2765 struct flow_dissector_key_ct *key,
2766 struct flow_dissector_key_ct *mask)
2767{
2768 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2769 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2770 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2771 sizeof(key->ct_state)))
2772 goto nla_put_failure;
2773
2774 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2775 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2776 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2777 sizeof(key->ct_zone)))
2778 goto nla_put_failure;
2779
2780 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2781 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2782 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2783 sizeof(key->ct_mark)))
2784 goto nla_put_failure;
2785
2786 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2787 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2788 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2789 sizeof(key->ct_labels)))
2790 goto nla_put_failure;
2791
2792 return 0;
2793
2794nla_put_failure:
2795 return -EMSGSIZE;
2796}
2797
0a6e7778
PJV		 2798static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2799 struct flow_dissector_key_enc_opts *enc_opts)
2800{
2801 struct nlattr *nest;
2802 int err;
2803
2804 if (!enc_opts->len)
2805 return 0;
2806
ae0be8de 2807 nest = nla_nest_start_noflag(skb, enc_opt_type);
0a6e7778
PJV		 2808 if (!nest)
2809 goto nla_put_failure;
2810
2811 switch (enc_opts->dst_opt_type) {
2812 case TUNNEL_GENEVE_OPT:
2813 err = fl_dump_key_geneve_opt(skb, enc_opts);
2814 if (err)
2815 goto nla_put_failure;
2816 break;
d8f9dfae
XL		 2817 case TUNNEL_VXLAN_OPT:
2818 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2819 if (err)
2820 goto nla_put_failure;
2821 break;
79b1011c
XL		 2822 case TUNNEL_ERSPAN_OPT:
2823 err = fl_dump_key_erspan_opt(skb, enc_opts);
2824 if (err)
2825 goto nla_put_failure;
2826 break;
0a6e7778
PJV		 2827 default:
2828 goto nla_put_failure;
2829 }
2830 nla_nest_end(skb, nest);
2831 return 0;
2832
2833nla_put_failure:
2834 nla_nest_cancel(skb, nest);
2835 return -EMSGSIZE;
2836}
2837
2838static int fl_dump_key_enc_opt(struct sk_buff *skb,
2839 struct flow_dissector_key_enc_opts *key_opts,
2840 struct flow_dissector_key_enc_opts *msk_opts)
2841{
2842 int err;
2843
2844 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2845 if (err)
2846 return err;
2847
2848 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2849}
2850
f5749081
JP		 2851static int fl_dump_key(struct sk_buff *skb, struct net *net,
2852 struct fl_flow_key *key, struct fl_flow_key *mask)
77b9900e 2853{
8212ed77 2854 if (mask->meta.ingress_ifindex) {
77b9900e
JP		 2855 struct net_device *dev;
2856
8212ed77 2857 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
77b9900e
JP		 2858 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2859 goto nla_put_failure;
2860 }
2861
2862 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2863 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2864 sizeof(key->eth.dst)) ||
2865 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2866 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2867 sizeof(key->eth.src)) ||
2868 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2869 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2870 sizeof(key->basic.n_proto)))
2871 goto nla_put_failure;
9399ae9a 2872
a577d8f7
BL		 2873 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2874 goto nla_put_failure;
2875
d64efd09
JL		 2876 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2877 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
9399ae9a
HHZ		 2878 goto nla_put_failure;
2879
d64efd09
JL		 2880 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2881 TCA_FLOWER_KEY_CVLAN_PRIO,
2882 &key->cvlan, &mask->cvlan) ||
2883 (mask->cvlan.vlan_tpid &&
158abbf1
JL		 2884 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2885 key->cvlan.vlan_tpid)))
d3069512
JL		 2886 goto nla_put_failure;
2887
5e9a0fe4
JL		 2888 if (mask->basic.n_proto) {
2889 if (mask->cvlan.vlan_tpid) {
2890 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2891 key->basic.n_proto))
2892 goto nla_put_failure;
2893 } else if (mask->vlan.vlan_tpid) {
2894 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2895 key->basic.n_proto))
2896 goto nla_put_failure;
2897 }
d64efd09
JL		 2898 }
2899
77b9900e
JP		 2900 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2901 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 2902 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 2903 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a 2904 sizeof(key->basic.ip_proto)) ||
0e2c17b6 2905 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
77b9900e
JP		 2906 goto nla_put_failure;
2907
c3f83241 2908 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 2909 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2910 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2911 sizeof(key->ipv4.src)) ||
2912 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2913 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2914 sizeof(key->ipv4.dst))))
2915 goto nla_put_failure;
c3f83241 2916 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 2917 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2918 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2919 sizeof(key->ipv6.src)) ||
2920 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2921 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2922 sizeof(key->ipv6.dst))))
2923 goto nla_put_failure;
2924
2925 if (key->basic.ip_proto == IPPROTO_TCP &&
2926 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 2927 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 2928 sizeof(key->tp.src)) ||
2929 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 2930 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 2931 sizeof(key->tp.dst)) ||
2932 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2933 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2934 sizeof(key->tcp.flags))))
77b9900e
JP		 2935 goto nla_put_failure;
2936 else if (key->basic.ip_proto == IPPROTO_UDP &&
2937 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 2938 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 2939 sizeof(key->tp.src)) ||
2940 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 2941 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 2942 sizeof(key->tp.dst))))
2943 goto nla_put_failure;
2944 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2945 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2946 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2947 sizeof(key->tp.src)) ||
2948 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2949 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 2950 sizeof(key->tp.dst))))
2951 goto nla_put_failure;
7b684884
SH		 2952 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2953 key->basic.ip_proto == IPPROTO_ICMP &&
2954 (fl_dump_key_val(skb, &key->icmp.type,
2955 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2956 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2957 sizeof(key->icmp.type)) ||
2958 fl_dump_key_val(skb, &key->icmp.code,
2959 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2960 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2961 sizeof(key->icmp.code))))
2962 goto nla_put_failure;
2963 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2964 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2965 (fl_dump_key_val(skb, &key->icmp.type,
2966 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2967 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2968 sizeof(key->icmp.type)) ||
2969 fl_dump_key_val(skb, &key->icmp.code,
2970 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2971 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2972 sizeof(key->icmp.code))))
2973 goto nla_put_failure;
99d31326
SH		 2974 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2975 key->basic.n_proto == htons(ETH_P_RARP)) &&
2976 (fl_dump_key_val(skb, &key->arp.sip,
2977 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2978 TCA_FLOWER_KEY_ARP_SIP_MASK,
2979 sizeof(key->arp.sip)) ||
2980 fl_dump_key_val(skb, &key->arp.tip,
2981 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2982 TCA_FLOWER_KEY_ARP_TIP_MASK,
2983 sizeof(key->arp.tip)) ||
2984 fl_dump_key_val(skb, &key->arp.op,
2985 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2986 TCA_FLOWER_KEY_ARP_OP_MASK,
2987 sizeof(key->arp.op)) ||
2988 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2989 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2990 sizeof(key->arp.sha)) ||
2991 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2992 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2993 sizeof(key->arp.tha))))
2994 goto nla_put_failure;
77b9900e 2995
5c72299f
AN		 2996 if ((key->basic.ip_proto == IPPROTO_TCP ||
2997 key->basic.ip_proto == IPPROTO_UDP ||
2998 key->basic.ip_proto == IPPROTO_SCTP) &&
2999 fl_dump_key_port_range(skb, key, mask))
3000 goto nla_put_failure;
3001
bc3103f1
AV		 3002 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3003 (fl_dump_key_val(skb, &key->enc_ipv4.src,
3004 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
3005 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
3006 sizeof(key->enc_ipv4.src)) ||
3007 fl_dump_key_val(skb, &key->enc_ipv4.dst,
3008 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
3009 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
3010 sizeof(key->enc_ipv4.dst))))
3011 goto nla_put_failure;
3012 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3013 (fl_dump_key_val(skb, &key->enc_ipv6.src,
3014 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
3015 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
3016 sizeof(key->enc_ipv6.src)) ||
3017 fl_dump_key_val(skb, &key->enc_ipv6.dst,
3018 TCA_FLOWER_KEY_ENC_IPV6_DST,
3019 &mask->enc_ipv6.dst,
3020 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
3021 sizeof(key->enc_ipv6.dst))))
3022 goto nla_put_failure;
3023
3024 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 3025 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 3026 sizeof(key->enc_key_id)) ||
3027 fl_dump_key_val(skb, &key->enc_tp.src,
3028 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
3029 &mask->enc_tp.src,
3030 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
3031 sizeof(key->enc_tp.src)) ||
3032 fl_dump_key_val(skb, &key->enc_tp.dst,
3033 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
3034 &mask->enc_tp.dst,
3035 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
0e2c17b6 3036 sizeof(key->enc_tp.dst)) ||
0a6e7778
PJV		 3037 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
3038 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
bc3103f1
AV		 3039 goto nla_put_failure;
3040
e0ace68a
PB		 3041 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
3042 goto nla_put_failure;
3043
faa3ffce
OG		 3044 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
3045 goto nla_put_failure;
3046
5923b8f7
AL		 3047 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
3048 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
3049 sizeof(key->hash.hash)))
3050 goto nla_put_failure;
3051
f5749081
JP		 3052 return 0;
3053
3054nla_put_failure:
3055 return -EMSGSIZE;
3056}
3057
3058static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
12db03b6 3059 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
f5749081
JP		 3060{
3061 struct cls_fl_filter *f = fh;
3062 struct nlattr *nest;
3063 struct fl_flow_key *key, *mask;
3d81e711 3064 bool skip_hw;
f5749081
JP		 3065
3066 if (!f)
3067 return skb->len;
3068
3069 t->tcm_handle = f->handle;
3070
ae0be8de 3071 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
f5749081
JP		 3072 if (!nest)
3073 goto nla_put_failure;
3074
3d81e711
VB		 3075 spin_lock(&tp->lock);
3076
f5749081
JP		 3077 if (f->res.classid &&
3078 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3d81e711 3079 goto nla_put_failure_locked;
f5749081
JP		 3080
3081 key = &f->key;
3082 mask = &f->mask->key;
3d81e711 3083 skip_hw = tc_skip_hw(f->flags);
f5749081
JP		 3084
3085 if (fl_dump_key(skb, net, key, mask))
3d81e711 3086 goto nla_put_failure_locked;
f5749081 3087
749e6720 3088 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3d81e711
VB		 3089 goto nla_put_failure_locked;
3090
3091 spin_unlock(&tp->lock);
3092
3093 if (!skip_hw)
c24e43d8 3094 fl_hw_update_stats(tp, f, rtnl_held);
e69985c6 3095
86c55361
VB		 3096 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3097 goto nla_put_failure;
3098
77b9900e
JP		 3099 if (tcf_exts_dump(skb, &f->exts))
3100 goto nla_put_failure;
3101
3102 nla_nest_end(skb, nest);
3103
3104 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3105 goto nla_put_failure;
3106
3107 return skb->len;
3108
3d81e711
VB		 3109nla_put_failure_locked:
3110 spin_unlock(&tp->lock);
77b9900e
JP		 3111nla_put_failure:
3112 nla_nest_cancel(skb, nest);
3113 return -1;
3114}
3115
0348451d
VB		 3116static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3117 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3118{
3119 struct cls_fl_filter *f = fh;
3120 struct nlattr *nest;
3121 bool skip_hw;
3122
3123 if (!f)
3124 return skb->len;
3125
3126 t->tcm_handle = f->handle;
3127
3128 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3129 if (!nest)
3130 goto nla_put_failure;
3131
3132 spin_lock(&tp->lock);
3133
3134 skip_hw = tc_skip_hw(f->flags);
3135
3136 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3137 goto nla_put_failure_locked;
3138
3139 spin_unlock(&tp->lock);
3140
3141 if (!skip_hw)
3142 fl_hw_update_stats(tp, f, rtnl_held);
3143
3144 if (tcf_exts_terse_dump(skb, &f->exts))
3145 goto nla_put_failure;
3146
3147 nla_nest_end(skb, nest);
3148
3149 return skb->len;
3150
3151nla_put_failure_locked:
3152 spin_unlock(&tp->lock);
3153nla_put_failure:
3154 nla_nest_cancel(skb, nest);
3155 return -1;
3156}
3157
b95ec7eb
JP		 3158static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3159{
3160 struct fl_flow_tmplt *tmplt = tmplt_priv;
3161 struct fl_flow_key *key, *mask;
3162 struct nlattr *nest;
3163
ae0be8de 3164 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
b95ec7eb
JP		 3165 if (!nest)
3166 goto nla_put_failure;
3167
3168 key = &tmplt->dummy_key;
3169 mask = &tmplt->mask;
3170
3171 if (fl_dump_key(skb, net, key, mask))
3172 goto nla_put_failure;
3173
3174 nla_nest_end(skb, nest);
3175
3176 return skb->len;
3177
3178nla_put_failure:
3179 nla_nest_cancel(skb, nest);
3180 return -EMSGSIZE;
3181}
3182
2e24cd75
CW		 3183static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3184 unsigned long base)
07d79fc7
CW		 3185{
3186 struct cls_fl_filter *f = fh;
3187
2e24cd75
CW		 3188 if (f && f->res.classid == classid) {
3189 if (cl)
3190 __tcf_bind_filter(q, &f->res, base);
3191 else
3192 __tcf_unbind_filter(q, &f->res);
3193 }
07d79fc7
CW		 3194}
3195
a5b72a08
DC		 3196static bool fl_delete_empty(struct tcf_proto *tp)
3197{
3198 struct cls_fl_head *head = fl_head_dereference(tp);
3199
3200 spin_lock(&tp->lock);
3201 tp->deleting = idr_is_empty(&head->handle_idr);
3202 spin_unlock(&tp->lock);
3203
3204 return tp->deleting;
3205}
3206
77b9900e
JP		 3207static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3208 .kind = "flower",
3209 .classify = fl_classify,
3210 .init = fl_init,
3211 .destroy = fl_destroy,
3212 .get = fl_get,
06177558 3213 .put = fl_put,
77b9900e
JP		 3214 .change = fl_change,
3215 .delete = fl_delete,
a5b72a08 3216 .delete_empty = fl_delete_empty,
77b9900e 3217 .walk = fl_walk,
31533cba 3218 .reoffload = fl_reoffload,
a449a3e7
VB		 3219 .hw_add = fl_hw_add,
3220 .hw_del = fl_hw_del,
77b9900e 3221 .dump = fl_dump,
0348451d 3222 .terse_dump = fl_terse_dump,
07d79fc7 3223 .bind_class = fl_bind_class,
b95ec7eb
JP		 3224 .tmplt_create = fl_tmplt_create,
3225 .tmplt_destroy = fl_tmplt_destroy,
3226 .tmplt_dump = fl_tmplt_dump,
77b9900e 3227 .owner = THIS_MODULE,
92149190 3228 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
77b9900e
JP		 3229};
3230
3231static int __init cls_fl_init(void)
3232{
3233 return register_tcf_proto_ops(&cls_fl_ops);
3234}
3235
3236static void __exit cls_fl_exit(void)
3237{
3238 unregister_tcf_proto_ops(&cls_fl_ops);
3239}
3240
3241module_init(cls_fl_init);
3242module_exit(cls_fl_exit);
3243
3244MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3245MODULE_DESCRIPTION("Flower classifier");
3246MODULE_LICENSE("GPL v2");
Linux 6.x block layer and io_uring tree(s)