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Linux 5.7.7
[linux/fpc-iii.git] / net / sched / cls_flower.c
blob74a0febcafb83231438251f57fe7b9e9e48fff94
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * net/sched/cls_flower.c Flower classifier
4 *
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/init.h>
10 #include <linux/module.h>
11 #include <linux/rhashtable.h>
12 #include <linux/workqueue.h>
13 #include <linux/refcount.h>
14
15 #include <linux/if_ether.h>
16 #include <linux/in6.h>
17 #include <linux/ip.h>
18 #include <linux/mpls.h>
19
20 #include <net/sch_generic.h>
21 #include <net/pkt_cls.h>
22 #include <net/ip.h>
23 #include <net/flow_dissector.h>
24 #include <net/geneve.h>
25 #include <net/vxlan.h>
26 #include <net/erspan.h>
27
28 #include <net/dst.h>
29 #include <net/dst_metadata.h>
30
31 #include <uapi/linux/netfilter/nf_conntrack_common.h>
32
33 struct fl_flow_key {
34 struct flow_dissector_key_meta meta;
35 struct flow_dissector_key_control control;
36 struct flow_dissector_key_control enc_control;
37 struct flow_dissector_key_basic basic;
38 struct flow_dissector_key_eth_addrs eth;
39 struct flow_dissector_key_vlan vlan;
40 struct flow_dissector_key_vlan cvlan;
41 union {
42 struct flow_dissector_key_ipv4_addrs ipv4;
43 struct flow_dissector_key_ipv6_addrs ipv6;
44 };
45 struct flow_dissector_key_ports tp;
46 struct flow_dissector_key_icmp icmp;
47 struct flow_dissector_key_arp arp;
48 struct flow_dissector_key_keyid enc_key_id;
49 union {
50 struct flow_dissector_key_ipv4_addrs enc_ipv4;
51 struct flow_dissector_key_ipv6_addrs enc_ipv6;
52 };
53 struct flow_dissector_key_ports enc_tp;
54 struct flow_dissector_key_mpls mpls;
55 struct flow_dissector_key_tcp tcp;
56 struct flow_dissector_key_ip ip;
57 struct flow_dissector_key_ip enc_ip;
58 struct flow_dissector_key_enc_opts enc_opts;
59 union {
60 struct flow_dissector_key_ports tp;
61 struct {
62 struct flow_dissector_key_ports tp_min;
63 struct flow_dissector_key_ports tp_max;
64 };
65 } tp_range;
66 struct flow_dissector_key_ct ct;
67 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
68
69 struct fl_flow_mask_range {
70 unsigned short int start;
71 unsigned short int end;
72 };
73
74 struct fl_flow_mask {
75 struct fl_flow_key key;
76 struct fl_flow_mask_range range;
77 u32 flags;
78 struct rhash_head ht_node;
79 struct rhashtable ht;
80 struct rhashtable_params filter_ht_params;
81 struct flow_dissector dissector;
82 struct list_head filters;
83 struct rcu_work rwork;
84 struct list_head list;
85 refcount_t refcnt;
86 };
87
88 struct fl_flow_tmplt {
89 struct fl_flow_key dummy_key;
90 struct fl_flow_key mask;
91 struct flow_dissector dissector;
92 struct tcf_chain *chain;
93 };
94
95 struct cls_fl_head {
96 struct rhashtable ht;
97 spinlock_t masks_lock; /* Protect masks list */
98 struct list_head masks;
99 struct list_head hw_filters;
100 struct rcu_work rwork;
101 struct idr handle_idr;
102 };
103
104 struct cls_fl_filter {
105 struct fl_flow_mask *mask;
106 struct rhash_head ht_node;
107 struct fl_flow_key mkey;
108 struct tcf_exts exts;
109 struct tcf_result res;
110 struct fl_flow_key key;
111 struct list_head list;
112 struct list_head hw_list;
113 u32 handle;
114 u32 flags;
115 u32 in_hw_count;
116 struct rcu_work rwork;
117 struct net_device *hw_dev;
118 /* Flower classifier is unlocked, which means that its reference counter
119 * can be changed concurrently without any kind of external
120 * synchronization. Use atomic reference counter to be concurrency-safe.
121 */
122 refcount_t refcnt;
123 bool deleted;
124 };
125
126 static const struct rhashtable_params mask_ht_params = {
127 .key_offset = offsetof(struct fl_flow_mask, key),
128 .key_len = sizeof(struct fl_flow_key),
129 .head_offset = offsetof(struct fl_flow_mask, ht_node),
130 .automatic_shrinking = true,
131 };
132
133 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
134 {
135 return mask->range.end - mask->range.start;
136 }
137
138 static void fl_mask_update_range(struct fl_flow_mask *mask)
139 {
140 const u8 *bytes = (const u8 *) &mask->key;
141 size_t size = sizeof(mask->key);
142 size_t i, first = 0, last;
143
144 for (i = 0; i < size; i++) {
145 if (bytes[i]) {
146 first = i;
147 break;
148 }
149 }
150 last = first;
151 for (i = size - 1; i != first; i--) {
152 if (bytes[i]) {
153 last = i;
154 break;
155 }
156 }
157 mask->range.start = rounddown(first, sizeof(long));
158 mask->range.end = roundup(last + 1, sizeof(long));
159 }
160
161 static void *fl_key_get_start(struct fl_flow_key *key,
162 const struct fl_flow_mask *mask)
163 {
164 return (u8 *) key + mask->range.start;
165 }
166
167 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
168 struct fl_flow_mask *mask)
169 {
170 const long *lkey = fl_key_get_start(key, mask);
171 const long *lmask = fl_key_get_start(&mask->key, mask);
172 long *lmkey = fl_key_get_start(mkey, mask);
173 int i;
174
175 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
176 *lmkey++ = *lkey++ & *lmask++;
177 }
178
179 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
180 struct fl_flow_mask *mask)
181 {
182 const long *lmask = fl_key_get_start(&mask->key, mask);
183 const long *ltmplt;
184 int i;
185
186 if (!tmplt)
187 return true;
188 ltmplt = fl_key_get_start(&tmplt->mask, mask);
189 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
190 if (~*ltmplt++ & *lmask++)
191 return false;
192 }
193 return true;
194 }
195
196 static void fl_clear_masked_range(struct fl_flow_key *key,
197 struct fl_flow_mask *mask)
198 {
199 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
200 }
201
202 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
203 struct fl_flow_key *key,
204 struct fl_flow_key *mkey)
205 {
206 __be16 min_mask, max_mask, min_val, max_val;
207
208 min_mask = htons(filter->mask->key.tp_range.tp_min.dst);
209 max_mask = htons(filter->mask->key.tp_range.tp_max.dst);
210 min_val = htons(filter->key.tp_range.tp_min.dst);
211 max_val = htons(filter->key.tp_range.tp_max.dst);
212
213 if (min_mask && max_mask) {
214 if (htons(key->tp_range.tp.dst) < min_val ||
215 htons(key->tp_range.tp.dst) > max_val)
216 return false;
217
218 /* skb does not have min and max values */
219 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
220 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
221 }
222 return true;
223 }
224
225 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
226 struct fl_flow_key *key,
227 struct fl_flow_key *mkey)
228 {
229 __be16 min_mask, max_mask, min_val, max_val;
230
231 min_mask = htons(filter->mask->key.tp_range.tp_min.src);
232 max_mask = htons(filter->mask->key.tp_range.tp_max.src);
233 min_val = htons(filter->key.tp_range.tp_min.src);
234 max_val = htons(filter->key.tp_range.tp_max.src);
235
236 if (min_mask && max_mask) {
237 if (htons(key->tp_range.tp.src) < min_val ||
238 htons(key->tp_range.tp.src) > max_val)
239 return false;
240
241 /* skb does not have min and max values */
242 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
243 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
244 }
245 return true;
246 }
247
248 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
249 struct fl_flow_key *mkey)
250 {
251 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
252 mask->filter_ht_params);
253 }
254
255 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
256 struct fl_flow_key *mkey,
257 struct fl_flow_key *key)
258 {
259 struct cls_fl_filter *filter, *f;
260
261 list_for_each_entry_rcu(filter, &mask->filters, list) {
262 if (!fl_range_port_dst_cmp(filter, key, mkey))
263 continue;
264
265 if (!fl_range_port_src_cmp(filter, key, mkey))
266 continue;
267
268 f = __fl_lookup(mask, mkey);
269 if (f)
270 return f;
271 }
272 return NULL;
273 }
274
275 static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
276 struct fl_flow_key *mkey,
277 struct fl_flow_key *key)
278 {
279 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
280 return fl_lookup_range(mask, mkey, key);
281
282 return __fl_lookup(mask, mkey);
283 }
284
285 static u16 fl_ct_info_to_flower_map[] = {
286 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
287 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
288 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
289 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
290 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
291 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
292 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
293 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
294 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
295 TCA_FLOWER_KEY_CT_FLAGS_NEW,
296 };
297
298 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
299 struct tcf_result *res)
300 {
301 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
302 struct fl_flow_key skb_mkey;
303 struct fl_flow_key skb_key;
304 struct fl_flow_mask *mask;
305 struct cls_fl_filter *f;
306
307 list_for_each_entry_rcu(mask, &head->masks, list) {
308 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
309 fl_clear_masked_range(&skb_key, mask);
310
311 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
312 /* skb_flow_dissect() does not set n_proto in case an unknown
313 * protocol, so do it rather here.
314 */
315 skb_key.basic.n_proto = skb->protocol;
316 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
317 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
318 fl_ct_info_to_flower_map,
319 ARRAY_SIZE(fl_ct_info_to_flower_map));
320 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
321
322 fl_set_masked_key(&skb_mkey, &skb_key, mask);
323
324 f = fl_lookup(mask, &skb_mkey, &skb_key);
325 if (f && !tc_skip_sw(f->flags)) {
326 *res = f->res;
327 return tcf_exts_exec(skb, &f->exts, res);
328 }
329 }
330 return -1;
331 }
332
333 static int fl_init(struct tcf_proto *tp)
334 {
335 struct cls_fl_head *head;
336
337 head = kzalloc(sizeof(*head), GFP_KERNEL);
338 if (!head)
339 return -ENOBUFS;
340
341 spin_lock_init(&head->masks_lock);
342 INIT_LIST_HEAD_RCU(&head->masks);
343 INIT_LIST_HEAD(&head->hw_filters);
344 rcu_assign_pointer(tp->root, head);
345 idr_init(&head->handle_idr);
346
347 return rhashtable_init(&head->ht, &mask_ht_params);
348 }
349
350 static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
351 {
352 /* temporary masks don't have their filters list and ht initialized */
353 if (mask_init_done) {
354 WARN_ON(!list_empty(&mask->filters));
355 rhashtable_destroy(&mask->ht);
356 }
357 kfree(mask);
358 }
359
360 static void fl_mask_free_work(struct work_struct *work)
361 {
362 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
363 struct fl_flow_mask, rwork);
364
365 fl_mask_free(mask, true);
366 }
367
368 static void fl_uninit_mask_free_work(struct work_struct *work)
369 {
370 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
371 struct fl_flow_mask, rwork);
372
373 fl_mask_free(mask, false);
374 }
375
376 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
377 {
378 if (!refcount_dec_and_test(&mask->refcnt))
379 return false;
380
381 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
382
383 spin_lock(&head->masks_lock);
384 list_del_rcu(&mask->list);
385 spin_unlock(&head->masks_lock);
386
387 tcf_queue_work(&mask->rwork, fl_mask_free_work);
388
389 return true;
390 }
391
392 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
393 {
394 /* Flower classifier only changes root pointer during init and destroy.
395 * Users must obtain reference to tcf_proto instance before calling its
396 * API, so tp->root pointer is protected from concurrent call to
397 * fl_destroy() by reference counting.
398 */
399 return rcu_dereference_raw(tp->root);
400 }
401
402 static void __fl_destroy_filter(struct cls_fl_filter *f)
403 {
404 tcf_exts_destroy(&f->exts);
405 tcf_exts_put_net(&f->exts);
406 kfree(f);
407 }
408
409 static void fl_destroy_filter_work(struct work_struct *work)
410 {
411 struct cls_fl_filter *f = container_of(to_rcu_work(work),
412 struct cls_fl_filter, rwork);
413
414 __fl_destroy_filter(f);
415 }
416
417 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
418 bool rtnl_held, struct netlink_ext_ack *extack)
419 {
420 struct tcf_block *block = tp->chain->block;
421 struct flow_cls_offload cls_flower = {};
422
423 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
424 cls_flower.command = FLOW_CLS_DESTROY;
425 cls_flower.cookie = (unsigned long) f;
426
427 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
428 &f->flags, &f->in_hw_count, rtnl_held);
429
430 }
431
432 static int fl_hw_replace_filter(struct tcf_proto *tp,
433 struct cls_fl_filter *f, bool rtnl_held,
434 struct netlink_ext_ack *extack)
435 {
436 struct tcf_block *block = tp->chain->block;
437 struct flow_cls_offload cls_flower = {};
438 bool skip_sw = tc_skip_sw(f->flags);
439 int err = 0;
440
441 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
442 if (!cls_flower.rule)
443 return -ENOMEM;
444
445 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
446 cls_flower.command = FLOW_CLS_REPLACE;
447 cls_flower.cookie = (unsigned long) f;
448 cls_flower.rule->match.dissector = &f->mask->dissector;
449 cls_flower.rule->match.mask = &f->mask->key;
450 cls_flower.rule->match.key = &f->mkey;
451 cls_flower.classid = f->res.classid;
452
453 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
454 if (err) {
455 kfree(cls_flower.rule);
456 if (skip_sw) {
457 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
458 return err;
459 }
460 return 0;
461 }
462
463 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
464 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
465 tc_cleanup_flow_action(&cls_flower.rule->action);
466 kfree(cls_flower.rule);
467
468 if (err) {
469 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
470 return err;
471 }
472
473 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
474 return -EINVAL;
475
476 return 0;
477 }
478
479 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
480 bool rtnl_held)
481 {
482 struct tcf_block *block = tp->chain->block;
483 struct flow_cls_offload cls_flower = {};
484
485 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
486 cls_flower.command = FLOW_CLS_STATS;
487 cls_flower.cookie = (unsigned long) f;
488 cls_flower.classid = f->res.classid;
489
490 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
491 rtnl_held);
492
493 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
494 cls_flower.stats.pkts,
495 cls_flower.stats.lastused,
496 cls_flower.stats.used_hw_stats,
497 cls_flower.stats.used_hw_stats_valid);
498 }
499
500 static void __fl_put(struct cls_fl_filter *f)
501 {
502 if (!refcount_dec_and_test(&f->refcnt))
503 return;
504
505 if (tcf_exts_get_net(&f->exts))
506 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
507 else
508 __fl_destroy_filter(f);
509 }
510
511 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
512 {
513 struct cls_fl_filter *f;
514
515 rcu_read_lock();
516 f = idr_find(&head->handle_idr, handle);
517 if (f && !refcount_inc_not_zero(&f->refcnt))
518 f = NULL;
519 rcu_read_unlock();
520
521 return f;
522 }
523
524 static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
525 bool *last, bool rtnl_held,
526 struct netlink_ext_ack *extack)
527 {
528 struct cls_fl_head *head = fl_head_dereference(tp);
529
530 *last = false;
531
532 spin_lock(&tp->lock);
533 if (f->deleted) {
534 spin_unlock(&tp->lock);
535 return -ENOENT;
536 }
537
538 f->deleted = true;
539 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
540 f->mask->filter_ht_params);
541 idr_remove(&head->handle_idr, f->handle);
542 list_del_rcu(&f->list);
543 spin_unlock(&tp->lock);
544
545 *last = fl_mask_put(head, f->mask);
546 if (!tc_skip_hw(f->flags))
547 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
548 tcf_unbind_filter(tp, &f->res);
549 __fl_put(f);
550
551 return 0;
552 }
553
554 static void fl_destroy_sleepable(struct work_struct *work)
555 {
556 struct cls_fl_head *head = container_of(to_rcu_work(work),
557 struct cls_fl_head,
558 rwork);
559
560 rhashtable_destroy(&head->ht);
561 kfree(head);
562 module_put(THIS_MODULE);
563 }
564
565 static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
566 struct netlink_ext_ack *extack)
567 {
568 struct cls_fl_head *head = fl_head_dereference(tp);
569 struct fl_flow_mask *mask, *next_mask;
570 struct cls_fl_filter *f, *next;
571 bool last;
572
573 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
574 list_for_each_entry_safe(f, next, &mask->filters, list) {
575 __fl_delete(tp, f, &last, rtnl_held, extack);
576 if (last)
577 break;
578 }
579 }
580 idr_destroy(&head->handle_idr);
581
582 __module_get(THIS_MODULE);
583 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
584 }
585
586 static void fl_put(struct tcf_proto *tp, void *arg)
587 {
588 struct cls_fl_filter *f = arg;
589
590 __fl_put(f);
591 }
592
593 static void *fl_get(struct tcf_proto *tp, u32 handle)
594 {
595 struct cls_fl_head *head = fl_head_dereference(tp);
596
597 return __fl_get(head, handle);
598 }
599
600 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
601 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
602 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
603 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
604 .len = IFNAMSIZ },
605 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
606 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
607 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
608 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
609 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
610 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
611 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
612 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
613 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
614 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
615 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
616 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
617 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
618 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
619 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
620 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
621 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
622 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
623 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
624 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
625 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
626 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
627 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
628 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
629 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
630 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
631 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
632 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
633 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
634 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
635 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
636 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
637 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
638 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
639 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
640 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
641 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
642 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
643 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
644 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
645 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
646 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
647 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
648 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
649 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
650 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
651 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
652 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
653 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
654 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
655 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
656 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
657 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
658 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
659 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
660 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
661 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
662 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
663 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
664 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
665 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
666 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
667 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
668 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
669 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
671 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
672 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
673 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
674 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
675 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
678 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
679 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
680 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
681 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
683 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
684 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
685 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
686 [TCA_FLOWER_KEY_CT_STATE] = { .type = NLA_U16 },
687 [TCA_FLOWER_KEY_CT_STATE_MASK] = { .type = NLA_U16 },
688 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
689 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
690 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
691 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
692 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
693 .len = 128 / BITS_PER_BYTE },
694 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
695 .len = 128 / BITS_PER_BYTE },
696 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
697 };
698
699 static const struct nla_policy
700 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
701 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
702 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
703 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
704 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
705 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
706 };
707
708 static const struct nla_policy
709 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
710 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
711 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
712 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
713 .len = 128 },
714 };
715
716 static const struct nla_policy
717 vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
718 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
719 };
720
721 static const struct nla_policy
722 erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
723 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
724 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
725 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
726 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
727 };
728
729 static void fl_set_key_val(struct nlattr **tb,
730 void *val, int val_type,
731 void *mask, int mask_type, int len)
732 {
733 if (!tb[val_type])
734 return;
735 nla_memcpy(val, tb[val_type], len);
736 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
737 memset(mask, 0xff, len);
738 else
739 nla_memcpy(mask, tb[mask_type], len);
740 }
741
742 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
743 struct fl_flow_key *mask,
744 struct netlink_ext_ack *extack)
745 {
746 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
747 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
748 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
749 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
750 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
751 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
752 fl_set_key_val(tb, &key->tp_range.tp_min.src,
753 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
754 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
755 fl_set_key_val(tb, &key->tp_range.tp_max.src,
756 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
757 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
758
759 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
760 htons(key->tp_range.tp_max.dst) <=
761 htons(key->tp_range.tp_min.dst)) {
762 NL_SET_ERR_MSG_ATTR(extack,
763 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
764 "Invalid destination port range (min must be strictly smaller than max)");
765 return -EINVAL;
766 }
767 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
768 htons(key->tp_range.tp_max.src) <=
769 htons(key->tp_range.tp_min.src)) {
770 NL_SET_ERR_MSG_ATTR(extack,
771 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
772 "Invalid source port range (min must be strictly smaller than max)");
773 return -EINVAL;
774 }
775
776 return 0;
777 }
778
779 static int fl_set_key_mpls(struct nlattr **tb,
780 struct flow_dissector_key_mpls *key_val,
781 struct flow_dissector_key_mpls *key_mask,
782 struct netlink_ext_ack *extack)
783 {
784 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
785 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
786 key_mask->mpls_ttl = MPLS_TTL_MASK;
787 }
788 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
789 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
790
791 if (bos & ~MPLS_BOS_MASK) {
792 NL_SET_ERR_MSG_ATTR(extack,
793 tb[TCA_FLOWER_KEY_MPLS_BOS],
794 "Bottom Of Stack (BOS) must be 0 or 1");
795 return -EINVAL;
796 }
797 key_val->mpls_bos = bos;
798 key_mask->mpls_bos = MPLS_BOS_MASK;
799 }
800 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
801 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
802
803 if (tc & ~MPLS_TC_MASK) {
804 NL_SET_ERR_MSG_ATTR(extack,
805 tb[TCA_FLOWER_KEY_MPLS_TC],
806 "Traffic Class (TC) must be between 0 and 7");
807 return -EINVAL;
808 }
809 key_val->mpls_tc = tc;
810 key_mask->mpls_tc = MPLS_TC_MASK;
811 }
812 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
813 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
814
815 if (label & ~MPLS_LABEL_MASK) {
816 NL_SET_ERR_MSG_ATTR(extack,
817 tb[TCA_FLOWER_KEY_MPLS_LABEL],
818 "Label must be between 0 and 1048575");
819 return -EINVAL;
820 }
821 key_val->mpls_label = label;
822 key_mask->mpls_label = MPLS_LABEL_MASK;
823 }
824 return 0;
825 }
826
827 static void fl_set_key_vlan(struct nlattr **tb,
828 __be16 ethertype,
829 int vlan_id_key, int vlan_prio_key,
830 struct flow_dissector_key_vlan *key_val,
831 struct flow_dissector_key_vlan *key_mask)
832 {
833 #define VLAN_PRIORITY_MASK 0x7
834
835 if (tb[vlan_id_key]) {
836 key_val->vlan_id =
837 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
838 key_mask->vlan_id = VLAN_VID_MASK;
839 }
840 if (tb[vlan_prio_key]) {
841 key_val->vlan_priority =
842 nla_get_u8(tb[vlan_prio_key]) &
843 VLAN_PRIORITY_MASK;
844 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
845 }
846 key_val->vlan_tpid = ethertype;
847 key_mask->vlan_tpid = cpu_to_be16(~0);
848 }
849
850 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
851 u32 *dissector_key, u32 *dissector_mask,
852 u32 flower_flag_bit, u32 dissector_flag_bit)
853 {
854 if (flower_mask & flower_flag_bit) {
855 *dissector_mask |= dissector_flag_bit;
856 if (flower_key & flower_flag_bit)
857 *dissector_key |= dissector_flag_bit;
858 }
859 }
860
861 static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
862 u32 *flags_mask, struct netlink_ext_ack *extack)
863 {
864 u32 key, mask;
865
866 /* mask is mandatory for flags */
867 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
868 NL_SET_ERR_MSG(extack, "Missing flags mask");
869 return -EINVAL;
870 }
871
872 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
873 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
874
875 *flags_key = 0;
876 *flags_mask = 0;
877
878 fl_set_key_flag(key, mask, flags_key, flags_mask,
879 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
880 fl_set_key_flag(key, mask, flags_key, flags_mask,
881 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
882 FLOW_DIS_FIRST_FRAG);
883
884 return 0;
885 }
886
887 static void fl_set_key_ip(struct nlattr **tb, bool encap,
888 struct flow_dissector_key_ip *key,
889 struct flow_dissector_key_ip *mask)
890 {
891 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
892 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
893 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
894 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
895
896 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
897 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
898 }
899
900 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
901 int depth, int option_len,
902 struct netlink_ext_ack *extack)
903 {
904 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
905 struct nlattr *class = NULL, *type = NULL, *data = NULL;
906 struct geneve_opt *opt;
907 int err, data_len = 0;
908
909 if (option_len > sizeof(struct geneve_opt))
910 data_len = option_len - sizeof(struct geneve_opt);
911
912 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
913 memset(opt, 0xff, option_len);
914 opt->length = data_len / 4;
915 opt->r1 = 0;
916 opt->r2 = 0;
917 opt->r3 = 0;
918
919 /* If no mask has been prodived we assume an exact match. */
920 if (!depth)
921 return sizeof(struct geneve_opt) + data_len;
922
923 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
924 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
925 return -EINVAL;
926 }
927
928 err = nla_parse_nested_deprecated(tb,
929 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
930 nla, geneve_opt_policy, extack);
931 if (err < 0)
932 return err;
933
934 /* We are not allowed to omit any of CLASS, TYPE or DATA
935 * fields from the key.
936 */
937 if (!option_len &&
938 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
939 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
940 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
941 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
942 return -EINVAL;
943 }
944
945 /* Omitting any of CLASS, TYPE or DATA fields is allowed
946 * for the mask.
947 */
948 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
949 int new_len = key->enc_opts.len;
950
951 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
952 data_len = nla_len(data);
953 if (data_len < 4) {
954 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
955 return -ERANGE;
956 }
957 if (data_len % 4) {
958 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
959 return -ERANGE;
960 }
961
962 new_len += sizeof(struct geneve_opt) + data_len;
963 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
964 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
965 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
966 return -ERANGE;
967 }
968 opt->length = data_len / 4;
969 memcpy(opt->opt_data, nla_data(data), data_len);
970 }
971
972 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
973 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
974 opt->opt_class = nla_get_be16(class);
975 }
976
977 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
978 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
979 opt->type = nla_get_u8(type);
980 }
981
982 return sizeof(struct geneve_opt) + data_len;
983 }
984
985 static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
986 int depth, int option_len,
987 struct netlink_ext_ack *extack)
988 {
989 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
990 struct vxlan_metadata *md;
991 int err;
992
993 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
994 memset(md, 0xff, sizeof(*md));
995
996 if (!depth)
997 return sizeof(*md);
998
999 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1000 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1001 return -EINVAL;
1002 }
1003
1004 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1005 vxlan_opt_policy, extack);
1006 if (err < 0)
1007 return err;
1008
1009 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1010 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1011 return -EINVAL;
1012 }
1013
1014 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP])
1015 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
1016
1017 return sizeof(*md);
1018 }
1019
1020 static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1021 int depth, int option_len,
1022 struct netlink_ext_ack *extack)
1023 {
1024 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1025 struct erspan_metadata *md;
1026 int err;
1027
1028 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1029 memset(md, 0xff, sizeof(*md));
1030 md->version = 1;
1031
1032 if (!depth)
1033 return sizeof(*md);
1034
1035 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1036 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1037 return -EINVAL;
1038 }
1039
1040 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1041 erspan_opt_policy, extack);
1042 if (err < 0)
1043 return err;
1044
1045 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1046 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1047 return -EINVAL;
1048 }
1049
1050 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1051 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1052
1053 if (md->version == 1) {
1054 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1055 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1056 return -EINVAL;
1057 }
1058 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1059 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1060 md->u.index = nla_get_be32(nla);
1061 }
1062 } else if (md->version == 2) {
1063 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1064 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1065 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1066 return -EINVAL;
1067 }
1068 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1069 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1070 md->u.md2.dir = nla_get_u8(nla);
1071 }
1072 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1073 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1074 set_hwid(&md->u.md2, nla_get_u8(nla));
1075 }
1076 } else {
1077 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1078 return -EINVAL;
1079 }
1080
1081 return sizeof(*md);
1082 }
1083
1084 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1085 struct fl_flow_key *mask,
1086 struct netlink_ext_ack *extack)
1087 {
1088 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1089 int err, option_len, key_depth, msk_depth = 0;
1090
1091 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1092 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1093 enc_opts_policy, extack);
1094 if (err)
1095 return err;
1096
1097 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1098
1099 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1100 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1101 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1102 enc_opts_policy, extack);
1103 if (err)
1104 return err;
1105
1106 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1107 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1108 }
1109
1110 nla_for_each_attr(nla_opt_key, nla_enc_key,
1111 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1112 switch (nla_type(nla_opt_key)) {
1113 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1114 if (key->enc_opts.dst_opt_type &&
1115 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1116 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1117 return -EINVAL;
1118 }
1119 option_len = 0;
1120 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1121 option_len = fl_set_geneve_opt(nla_opt_key, key,
1122 key_depth, option_len,
1123 extack);
1124 if (option_len < 0)
1125 return option_len;
1126
1127 key->enc_opts.len += option_len;
1128 /* At the same time we need to parse through the mask
1129 * in order to verify exact and mask attribute lengths.
1130 */
1131 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1132 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1133 msk_depth, option_len,
1134 extack);
1135 if (option_len < 0)
1136 return option_len;
1137
1138 mask->enc_opts.len += option_len;
1139 if (key->enc_opts.len != mask->enc_opts.len) {
1140 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1141 return -EINVAL;
1142 }
1143
1144 if (msk_depth)
1145 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1146 break;
1147 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1148 if (key->enc_opts.dst_opt_type) {
1149 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1150 return -EINVAL;
1151 }
1152 option_len = 0;
1153 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1154 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1155 key_depth, option_len,
1156 extack);
1157 if (option_len < 0)
1158 return option_len;
1159
1160 key->enc_opts.len += option_len;
1161 /* At the same time we need to parse through the mask
1162 * in order to verify exact and mask attribute lengths.
1163 */
1164 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1165 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1166 msk_depth, option_len,
1167 extack);
1168 if (option_len < 0)
1169 return option_len;
1170
1171 mask->enc_opts.len += option_len;
1172 if (key->enc_opts.len != mask->enc_opts.len) {
1173 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1174 return -EINVAL;
1175 }
1176
1177 if (msk_depth)
1178 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1179 break;
1180 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1181 if (key->enc_opts.dst_opt_type) {
1182 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1183 return -EINVAL;
1184 }
1185 option_len = 0;
1186 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1187 option_len = fl_set_erspan_opt(nla_opt_key, key,
1188 key_depth, option_len,
1189 extack);
1190 if (option_len < 0)
1191 return option_len;
1192
1193 key->enc_opts.len += option_len;
1194 /* At the same time we need to parse through the mask
1195 * in order to verify exact and mask attribute lengths.
1196 */
1197 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1198 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1199 msk_depth, option_len,
1200 extack);
1201 if (option_len < 0)
1202 return option_len;
1203
1204 mask->enc_opts.len += option_len;
1205 if (key->enc_opts.len != mask->enc_opts.len) {
1206 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1207 return -EINVAL;
1208 }
1209
1210 if (msk_depth)
1211 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1212 break;
1213 default:
1214 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1215 return -EINVAL;
1216 }
1217 }
1218
1219 return 0;
1220 }
1221
1222 static int fl_set_key_ct(struct nlattr **tb,
1223 struct flow_dissector_key_ct *key,
1224 struct flow_dissector_key_ct *mask,
1225 struct netlink_ext_ack *extack)
1226 {
1227 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1228 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1229 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1230 return -EOPNOTSUPP;
1231 }
1232 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1233 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1234 sizeof(key->ct_state));
1235 }
1236 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1237 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1238 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1239 return -EOPNOTSUPP;
1240 }
1241 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1242 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1243 sizeof(key->ct_zone));
1244 }
1245 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1246 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1247 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1248 return -EOPNOTSUPP;
1249 }
1250 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1251 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1252 sizeof(key->ct_mark));
1253 }
1254 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1255 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1256 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1257 return -EOPNOTSUPP;
1258 }
1259 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1260 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1261 sizeof(key->ct_labels));
1262 }
1263
1264 return 0;
1265 }
1266
1267 static int fl_set_key(struct net *net, struct nlattr **tb,
1268 struct fl_flow_key *key, struct fl_flow_key *mask,
1269 struct netlink_ext_ack *extack)
1270 {
1271 __be16 ethertype;
1272 int ret = 0;
1273
1274 if (tb[TCA_FLOWER_INDEV]) {
1275 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1276 if (err < 0)
1277 return err;
1278 key->meta.ingress_ifindex = err;
1279 mask->meta.ingress_ifindex = 0xffffffff;
1280 }
1281
1282 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1283 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1284 sizeof(key->eth.dst));
1285 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1286 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1287 sizeof(key->eth.src));
1288
1289 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
1290 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1291
1292 if (eth_type_vlan(ethertype)) {
1293 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1294 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1295 &mask->vlan);
1296
1297 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1298 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1299 if (eth_type_vlan(ethertype)) {
1300 fl_set_key_vlan(tb, ethertype,
1301 TCA_FLOWER_KEY_CVLAN_ID,
1302 TCA_FLOWER_KEY_CVLAN_PRIO,
1303 &key->cvlan, &mask->cvlan);
1304 fl_set_key_val(tb, &key->basic.n_proto,
1305 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1306 &mask->basic.n_proto,
1307 TCA_FLOWER_UNSPEC,
1308 sizeof(key->basic.n_proto));
1309 } else {
1310 key->basic.n_proto = ethertype;
1311 mask->basic.n_proto = cpu_to_be16(~0);
1312 }
1313 }
1314 } else {
1315 key->basic.n_proto = ethertype;
1316 mask->basic.n_proto = cpu_to_be16(~0);
1317 }
1318 }
1319
1320 if (key->basic.n_proto == htons(ETH_P_IP) ||
1321 key->basic.n_proto == htons(ETH_P_IPV6)) {
1322 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1323 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1324 sizeof(key->basic.ip_proto));
1325 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1326 }
1327
1328 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1329 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1330 mask->control.addr_type = ~0;
1331 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1332 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1333 sizeof(key->ipv4.src));
1334 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1335 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1336 sizeof(key->ipv4.dst));
1337 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1338 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1339 mask->control.addr_type = ~0;
1340 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1341 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1342 sizeof(key->ipv6.src));
1343 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1344 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1345 sizeof(key->ipv6.dst));
1346 }
1347
1348 if (key->basic.ip_proto == IPPROTO_TCP) {
1349 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1350 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1351 sizeof(key->tp.src));
1352 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1353 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1354 sizeof(key->tp.dst));
1355 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1356 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1357 sizeof(key->tcp.flags));
1358 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1359 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1360 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1361 sizeof(key->tp.src));
1362 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1363 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1364 sizeof(key->tp.dst));
1365 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1366 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1367 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1368 sizeof(key->tp.src));
1369 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1370 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1371 sizeof(key->tp.dst));
1372 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1373 key->basic.ip_proto == IPPROTO_ICMP) {
1374 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1375 &mask->icmp.type,
1376 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1377 sizeof(key->icmp.type));
1378 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1379 &mask->icmp.code,
1380 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1381 sizeof(key->icmp.code));
1382 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1383 key->basic.ip_proto == IPPROTO_ICMPV6) {
1384 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1385 &mask->icmp.type,
1386 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1387 sizeof(key->icmp.type));
1388 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1389 &mask->icmp.code,
1390 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1391 sizeof(key->icmp.code));
1392 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1393 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1394 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1395 if (ret)
1396 return ret;
1397 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1398 key->basic.n_proto == htons(ETH_P_RARP)) {
1399 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1400 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1401 sizeof(key->arp.sip));
1402 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1403 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1404 sizeof(key->arp.tip));
1405 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1406 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1407 sizeof(key->arp.op));
1408 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1409 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1410 sizeof(key->arp.sha));
1411 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1412 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1413 sizeof(key->arp.tha));
1414 }
1415
1416 if (key->basic.ip_proto == IPPROTO_TCP ||
1417 key->basic.ip_proto == IPPROTO_UDP ||
1418 key->basic.ip_proto == IPPROTO_SCTP) {
1419 ret = fl_set_key_port_range(tb, key, mask, extack);
1420 if (ret)
1421 return ret;
1422 }
1423
1424 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1425 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1426 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1427 mask->enc_control.addr_type = ~0;
1428 fl_set_key_val(tb, &key->enc_ipv4.src,
1429 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1430 &mask->enc_ipv4.src,
1431 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1432 sizeof(key->enc_ipv4.src));
1433 fl_set_key_val(tb, &key->enc_ipv4.dst,
1434 TCA_FLOWER_KEY_ENC_IPV4_DST,
1435 &mask->enc_ipv4.dst,
1436 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1437 sizeof(key->enc_ipv4.dst));
1438 }
1439
1440 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1441 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1442 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1443 mask->enc_control.addr_type = ~0;
1444 fl_set_key_val(tb, &key->enc_ipv6.src,
1445 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1446 &mask->enc_ipv6.src,
1447 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1448 sizeof(key->enc_ipv6.src));
1449 fl_set_key_val(tb, &key->enc_ipv6.dst,
1450 TCA_FLOWER_KEY_ENC_IPV6_DST,
1451 &mask->enc_ipv6.dst,
1452 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1453 sizeof(key->enc_ipv6.dst));
1454 }
1455
1456 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1457 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1458 sizeof(key->enc_key_id.keyid));
1459
1460 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1461 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1462 sizeof(key->enc_tp.src));
1463
1464 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1465 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1466 sizeof(key->enc_tp.dst));
1467
1468 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1469
1470 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1471 ret = fl_set_enc_opt(tb, key, mask, extack);
1472 if (ret)
1473 return ret;
1474 }
1475
1476 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1477 if (ret)
1478 return ret;
1479
1480 if (tb[TCA_FLOWER_KEY_FLAGS])
1481 ret = fl_set_key_flags(tb, &key->control.flags,
1482 &mask->control.flags, extack);
1483
1484 return ret;
1485 }
1486
1487 static void fl_mask_copy(struct fl_flow_mask *dst,
1488 struct fl_flow_mask *src)
1489 {
1490 const void *psrc = fl_key_get_start(&src->key, src);
1491 void *pdst = fl_key_get_start(&dst->key, src);
1492
1493 memcpy(pdst, psrc, fl_mask_range(src));
1494 dst->range = src->range;
1495 }
1496
1497 static const struct rhashtable_params fl_ht_params = {
1498 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1499 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1500 .automatic_shrinking = true,
1501 };
1502
1503 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1504 {
1505 mask->filter_ht_params = fl_ht_params;
1506 mask->filter_ht_params.key_len = fl_mask_range(mask);
1507 mask->filter_ht_params.key_offset += mask->range.start;
1508
1509 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1510 }
1511
1512 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1513 #define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
1514
1515 #define FL_KEY_IS_MASKED(mask, member) \
1516 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1517 0, FL_KEY_MEMBER_SIZE(member)) \
1518
1519 #define FL_KEY_SET(keys, cnt, id, member) \
1520 do { \
1521 keys[cnt].key_id = id; \
1522 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1523 cnt++; \
1524 } while(0);
1525
1526 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1527 do { \
1528 if (FL_KEY_IS_MASKED(mask, member)) \
1529 FL_KEY_SET(keys, cnt, id, member); \
1530 } while(0);
1531
1532 static void fl_init_dissector(struct flow_dissector *dissector,
1533 struct fl_flow_key *mask)
1534 {
1535 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1536 size_t cnt = 0;
1537
1538 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1539 FLOW_DISSECTOR_KEY_META, meta);
1540 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1541 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1542 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1543 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1544 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1545 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1546 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1547 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1548 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1549 FLOW_DISSECTOR_KEY_PORTS, tp);
1550 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1551 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
1552 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1553 FLOW_DISSECTOR_KEY_IP, ip);
1554 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1555 FLOW_DISSECTOR_KEY_TCP, tcp);
1556 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1557 FLOW_DISSECTOR_KEY_ICMP, icmp);
1558 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1559 FLOW_DISSECTOR_KEY_ARP, arp);
1560 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1561 FLOW_DISSECTOR_KEY_MPLS, mpls);
1562 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1563 FLOW_DISSECTOR_KEY_VLAN, vlan);
1564 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1565 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1566 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1567 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1568 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1569 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1570 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1571 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1572 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1573 FL_KEY_IS_MASKED(mask, enc_ipv6))
1574 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1575 enc_control);
1576 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1577 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1578 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1579 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1580 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1581 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1582 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1583 FLOW_DISSECTOR_KEY_CT, ct);
1584
1585 skb_flow_dissector_init(dissector, keys, cnt);
1586 }
1587
1588 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1589 struct fl_flow_mask *mask)
1590 {
1591 struct fl_flow_mask *newmask;
1592 int err;
1593
1594 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1595 if (!newmask)
1596 return ERR_PTR(-ENOMEM);
1597
1598 fl_mask_copy(newmask, mask);
1599
1600 if ((newmask->key.tp_range.tp_min.dst &&
1601 newmask->key.tp_range.tp_max.dst) ||
1602 (newmask->key.tp_range.tp_min.src &&
1603 newmask->key.tp_range.tp_max.src))
1604 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1605
1606 err = fl_init_mask_hashtable(newmask);
1607 if (err)
1608 goto errout_free;
1609
1610 fl_init_dissector(&newmask->dissector, &newmask->key);
1611
1612 INIT_LIST_HEAD_RCU(&newmask->filters);
1613
1614 refcount_set(&newmask->refcnt, 1);
1615 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1616 &newmask->ht_node, mask_ht_params);
1617 if (err)
1618 goto errout_destroy;
1619
1620 spin_lock(&head->masks_lock);
1621 list_add_tail_rcu(&newmask->list, &head->masks);
1622 spin_unlock(&head->masks_lock);
1623
1624 return newmask;
1625
1626 errout_destroy:
1627 rhashtable_destroy(&newmask->ht);
1628 errout_free:
1629 kfree(newmask);
1630
1631 return ERR_PTR(err);
1632 }
1633
1634 static int fl_check_assign_mask(struct cls_fl_head *head,
1635 struct cls_fl_filter *fnew,
1636 struct cls_fl_filter *fold,
1637 struct fl_flow_mask *mask)
1638 {
1639 struct fl_flow_mask *newmask;
1640 int ret = 0;
1641
1642 rcu_read_lock();
1643
1644 /* Insert mask as temporary node to prevent concurrent creation of mask
1645 * with same key. Any concurrent lookups with same key will return
1646 * -EAGAIN because mask's refcnt is zero.
1647 */
1648 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1649 &mask->ht_node,
1650 mask_ht_params);
1651 if (!fnew->mask) {
1652 rcu_read_unlock();
1653
1654 if (fold) {
1655 ret = -EINVAL;
1656 goto errout_cleanup;
1657 }
1658
1659 newmask = fl_create_new_mask(head, mask);
1660 if (IS_ERR(newmask)) {
1661 ret = PTR_ERR(newmask);
1662 goto errout_cleanup;
1663 }
1664
1665 fnew->mask = newmask;
1666 return 0;
1667 } else if (IS_ERR(fnew->mask)) {
1668 ret = PTR_ERR(fnew->mask);
1669 } else if (fold && fold->mask != fnew->mask) {
1670 ret = -EINVAL;
1671 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1672 /* Mask was deleted concurrently, try again */
1673 ret = -EAGAIN;
1674 }
1675 rcu_read_unlock();
1676 return ret;
1677
1678 errout_cleanup:
1679 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1680 mask_ht_params);
1681 return ret;
1682 }
1683
1684 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1685 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1686 unsigned long base, struct nlattr **tb,
1687 struct nlattr *est, bool ovr,
1688 struct fl_flow_tmplt *tmplt, bool rtnl_held,
1689 struct netlink_ext_ack *extack)
1690 {
1691 int err;
1692
1693 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
1694 extack);
1695 if (err < 0)
1696 return err;
1697
1698 if (tb[TCA_FLOWER_CLASSID]) {
1699 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1700 if (!rtnl_held)
1701 rtnl_lock();
1702 tcf_bind_filter(tp, &f->res, base);
1703 if (!rtnl_held)
1704 rtnl_unlock();
1705 }
1706
1707 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1708 if (err)
1709 return err;
1710
1711 fl_mask_update_range(mask);
1712 fl_set_masked_key(&f->mkey, &f->key, mask);
1713
1714 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1715 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1716 return -EINVAL;
1717 }
1718
1719 return 0;
1720 }
1721
1722 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1723 struct cls_fl_filter *fold,
1724 bool *in_ht)
1725 {
1726 struct fl_flow_mask *mask = fnew->mask;
1727 int err;
1728
1729 err = rhashtable_lookup_insert_fast(&mask->ht,
1730 &fnew->ht_node,
1731 mask->filter_ht_params);
1732 if (err) {
1733 *in_ht = false;
1734 /* It is okay if filter with same key exists when
1735 * overwriting.
1736 */
1737 return fold && err == -EEXIST ? 0 : err;
1738 }
1739
1740 *in_ht = true;
1741 return 0;
1742 }
1743
1744 static int fl_change(struct net *net, struct sk_buff *in_skb,
1745 struct tcf_proto *tp, unsigned long base,
1746 u32 handle, struct nlattr **tca,
1747 void **arg, bool ovr, bool rtnl_held,
1748 struct netlink_ext_ack *extack)
1749 {
1750 struct cls_fl_head *head = fl_head_dereference(tp);
1751 struct cls_fl_filter *fold = *arg;
1752 struct cls_fl_filter *fnew;
1753 struct fl_flow_mask *mask;
1754 struct nlattr **tb;
1755 bool in_ht;
1756 int err;
1757
1758 if (!tca[TCA_OPTIONS]) {
1759 err = -EINVAL;
1760 goto errout_fold;
1761 }
1762
1763 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
1764 if (!mask) {
1765 err = -ENOBUFS;
1766 goto errout_fold;
1767 }
1768
1769 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1770 if (!tb) {
1771 err = -ENOBUFS;
1772 goto errout_mask_alloc;
1773 }
1774
1775 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1776 tca[TCA_OPTIONS], fl_policy, NULL);
1777 if (err < 0)
1778 goto errout_tb;
1779
1780 if (fold && handle && fold->handle != handle) {
1781 err = -EINVAL;
1782 goto errout_tb;
1783 }
1784
1785 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1786 if (!fnew) {
1787 err = -ENOBUFS;
1788 goto errout_tb;
1789 }
1790 INIT_LIST_HEAD(&fnew->hw_list);
1791 refcount_set(&fnew->refcnt, 1);
1792
1793 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
1794 if (err < 0)
1795 goto errout;
1796
1797 if (tb[TCA_FLOWER_FLAGS]) {
1798 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1799
1800 if (!tc_flags_valid(fnew->flags)) {
1801 err = -EINVAL;
1802 goto errout;
1803 }
1804 }
1805
1806 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
1807 tp->chain->tmplt_priv, rtnl_held, extack);
1808 if (err)
1809 goto errout;
1810
1811 err = fl_check_assign_mask(head, fnew, fold, mask);
1812 if (err)
1813 goto errout;
1814
1815 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1816 if (err)
1817 goto errout_mask;
1818
1819 if (!tc_skip_hw(fnew->flags)) {
1820 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
1821 if (err)
1822 goto errout_ht;
1823 }
1824
1825 if (!tc_in_hw(fnew->flags))
1826 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1827
1828 spin_lock(&tp->lock);
1829
1830 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
1831 * proto again or create new one, if necessary.
1832 */
1833 if (tp->deleting) {
1834 err = -EAGAIN;
1835 goto errout_hw;
1836 }
1837
1838 if (fold) {
1839 /* Fold filter was deleted concurrently. Retry lookup. */
1840 if (fold->deleted) {
1841 err = -EAGAIN;
1842 goto errout_hw;
1843 }
1844
1845 fnew->handle = handle;
1846
1847 if (!in_ht) {
1848 struct rhashtable_params params =
1849 fnew->mask->filter_ht_params;
1850
1851 err = rhashtable_insert_fast(&fnew->mask->ht,
1852 &fnew->ht_node,
1853 params);
1854 if (err)
1855 goto errout_hw;
1856 in_ht = true;
1857 }
1858
1859 refcount_inc(&fnew->refcnt);
1860 rhashtable_remove_fast(&fold->mask->ht,
1861 &fold->ht_node,
1862 fold->mask->filter_ht_params);
1863 idr_replace(&head->handle_idr, fnew, fnew->handle);
1864 list_replace_rcu(&fold->list, &fnew->list);
1865 fold->deleted = true;
1866
1867 spin_unlock(&tp->lock);
1868
1869 fl_mask_put(head, fold->mask);
1870 if (!tc_skip_hw(fold->flags))
1871 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
1872 tcf_unbind_filter(tp, &fold->res);
1873 /* Caller holds reference to fold, so refcnt is always > 0
1874 * after this.
1875 */
1876 refcount_dec(&fold->refcnt);
1877 __fl_put(fold);
1878 } else {
1879 if (handle) {
1880 /* user specifies a handle and it doesn't exist */
1881 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1882 handle, GFP_ATOMIC);
1883
1884 /* Filter with specified handle was concurrently
1885 * inserted after initial check in cls_api. This is not
1886 * necessarily an error if NLM_F_EXCL is not set in
1887 * message flags. Returning EAGAIN will cause cls_api to
1888 * try to update concurrently inserted rule.
1889 */
1890 if (err == -ENOSPC)
1891 err = -EAGAIN;
1892 } else {
1893 handle = 1;
1894 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1895 INT_MAX, GFP_ATOMIC);
1896 }
1897 if (err)
1898 goto errout_hw;
1899
1900 refcount_inc(&fnew->refcnt);
1901 fnew->handle = handle;
1902 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
1903 spin_unlock(&tp->lock);
1904 }
1905
1906 *arg = fnew;
1907
1908 kfree(tb);
1909 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
1910 return 0;
1911
1912 errout_ht:
1913 spin_lock(&tp->lock);
1914 errout_hw:
1915 fnew->deleted = true;
1916 spin_unlock(&tp->lock);
1917 if (!tc_skip_hw(fnew->flags))
1918 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1919 if (in_ht)
1920 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1921 fnew->mask->filter_ht_params);
1922 errout_mask:
1923 fl_mask_put(head, fnew->mask);
1924 errout:
1925 __fl_put(fnew);
1926 errout_tb:
1927 kfree(tb);
1928 errout_mask_alloc:
1929 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
1930 errout_fold:
1931 if (fold)
1932 __fl_put(fold);
1933 return err;
1934 }
1935
1936 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
1937 bool rtnl_held, struct netlink_ext_ack *extack)
1938 {
1939 struct cls_fl_head *head = fl_head_dereference(tp);
1940 struct cls_fl_filter *f = arg;
1941 bool last_on_mask;
1942 int err = 0;
1943
1944 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
1945 *last = list_empty(&head->masks);
1946 __fl_put(f);
1947
1948 return err;
1949 }
1950
1951 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
1952 bool rtnl_held)
1953 {
1954 struct cls_fl_head *head = fl_head_dereference(tp);
1955 unsigned long id = arg->cookie, tmp;
1956 struct cls_fl_filter *f;
1957
1958 arg->count = arg->skip;
1959
1960 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
1961 /* don't return filters that are being deleted */
1962 if (!refcount_inc_not_zero(&f->refcnt))
1963 continue;
1964 if (arg->fn(tp, f, arg) < 0) {
1965 __fl_put(f);
1966 arg->stop = 1;
1967 break;
1968 }
1969 __fl_put(f);
1970 arg->count++;
1971 }
1972 arg->cookie = id;
1973 }
1974
1975 static struct cls_fl_filter *
1976 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
1977 {
1978 struct cls_fl_head *head = fl_head_dereference(tp);
1979
1980 spin_lock(&tp->lock);
1981 if (list_empty(&head->hw_filters)) {
1982 spin_unlock(&tp->lock);
1983 return NULL;
1984 }
1985
1986 if (!f)
1987 f = list_entry(&head->hw_filters, struct cls_fl_filter,
1988 hw_list);
1989 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
1990 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
1991 spin_unlock(&tp->lock);
1992 return f;
1993 }
1994 }
1995
1996 spin_unlock(&tp->lock);
1997 return NULL;
1998 }
1999
2000 static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
2001 void *cb_priv, struct netlink_ext_ack *extack)
2002 {
2003 struct tcf_block *block = tp->chain->block;
2004 struct flow_cls_offload cls_flower = {};
2005 struct cls_fl_filter *f = NULL;
2006 int err;
2007
2008 /* hw_filters list can only be changed by hw offload functions after
2009 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2010 * iterating it.
2011 */
2012 ASSERT_RTNL();
2013
2014 while ((f = fl_get_next_hw_filter(tp, f, add))) {
2015 cls_flower.rule =
2016 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2017 if (!cls_flower.rule) {
2018 __fl_put(f);
2019 return -ENOMEM;
2020 }
2021
2022 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
2023 extack);
2024 cls_flower.command = add ?
2025 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
2026 cls_flower.cookie = (unsigned long)f;
2027 cls_flower.rule->match.dissector = &f->mask->dissector;
2028 cls_flower.rule->match.mask = &f->mask->key;
2029 cls_flower.rule->match.key = &f->mkey;
2030
2031 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
2032 if (err) {
2033 kfree(cls_flower.rule);
2034 if (tc_skip_sw(f->flags)) {
2035 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
2036 __fl_put(f);
2037 return err;
2038 }
2039 goto next_flow;
2040 }
2041
2042 cls_flower.classid = f->res.classid;
2043
2044 err = tc_setup_cb_reoffload(block, tp, add, cb,
2045 TC_SETUP_CLSFLOWER, &cls_flower,
2046 cb_priv, &f->flags,
2047 &f->in_hw_count);
2048 tc_cleanup_flow_action(&cls_flower.rule->action);
2049 kfree(cls_flower.rule);
2050
2051 if (err) {
2052 __fl_put(f);
2053 return err;
2054 }
2055 next_flow:
2056 __fl_put(f);
2057 }
2058
2059 return 0;
2060 }
2061
2062 static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2063 {
2064 struct flow_cls_offload *cls_flower = type_data;
2065 struct cls_fl_filter *f =
2066 (struct cls_fl_filter *) cls_flower->cookie;
2067 struct cls_fl_head *head = fl_head_dereference(tp);
2068
2069 spin_lock(&tp->lock);
2070 list_add(&f->hw_list, &head->hw_filters);
2071 spin_unlock(&tp->lock);
2072 }
2073
2074 static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2075 {
2076 struct flow_cls_offload *cls_flower = type_data;
2077 struct cls_fl_filter *f =
2078 (struct cls_fl_filter *) cls_flower->cookie;
2079
2080 spin_lock(&tp->lock);
2081 if (!list_empty(&f->hw_list))
2082 list_del_init(&f->hw_list);
2083 spin_unlock(&tp->lock);
2084 }
2085
2086 static int fl_hw_create_tmplt(struct tcf_chain *chain,
2087 struct fl_flow_tmplt *tmplt)
2088 {
2089 struct flow_cls_offload cls_flower = {};
2090 struct tcf_block *block = chain->block;
2091
2092 cls_flower.rule = flow_rule_alloc(0);
2093 if (!cls_flower.rule)
2094 return -ENOMEM;
2095
2096 cls_flower.common.chain_index = chain->index;
2097 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2098 cls_flower.cookie = (unsigned long) tmplt;
2099 cls_flower.rule->match.dissector = &tmplt->dissector;
2100 cls_flower.rule->match.mask = &tmplt->mask;
2101 cls_flower.rule->match.key = &tmplt->dummy_key;
2102
2103 /* We don't care if driver (any of them) fails to handle this
2104 * call. It serves just as a hint for it.
2105 */
2106 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2107 kfree(cls_flower.rule);
2108
2109 return 0;
2110 }
2111
2112 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2113 struct fl_flow_tmplt *tmplt)
2114 {
2115 struct flow_cls_offload cls_flower = {};
2116 struct tcf_block *block = chain->block;
2117
2118 cls_flower.common.chain_index = chain->index;
2119 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2120 cls_flower.cookie = (unsigned long) tmplt;
2121
2122 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2123 }
2124
2125 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2126 struct nlattr **tca,
2127 struct netlink_ext_ack *extack)
2128 {
2129 struct fl_flow_tmplt *tmplt;
2130 struct nlattr **tb;
2131 int err;
2132
2133 if (!tca[TCA_OPTIONS])
2134 return ERR_PTR(-EINVAL);
2135
2136 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2137 if (!tb)
2138 return ERR_PTR(-ENOBUFS);
2139 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2140 tca[TCA_OPTIONS], fl_policy, NULL);
2141 if (err)
2142 goto errout_tb;
2143
2144 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2145 if (!tmplt) {
2146 err = -ENOMEM;
2147 goto errout_tb;
2148 }
2149 tmplt->chain = chain;
2150 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2151 if (err)
2152 goto errout_tmplt;
2153
2154 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2155
2156 err = fl_hw_create_tmplt(chain, tmplt);
2157 if (err)
2158 goto errout_tmplt;
2159
2160 kfree(tb);
2161 return tmplt;
2162
2163 errout_tmplt:
2164 kfree(tmplt);
2165 errout_tb:
2166 kfree(tb);
2167 return ERR_PTR(err);
2168 }
2169
2170 static void fl_tmplt_destroy(void *tmplt_priv)
2171 {
2172 struct fl_flow_tmplt *tmplt = tmplt_priv;
2173
2174 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2175 kfree(tmplt);
2176 }
2177
2178 static int fl_dump_key_val(struct sk_buff *skb,
2179 void *val, int val_type,
2180 void *mask, int mask_type, int len)
2181 {
2182 int err;
2183
2184 if (!memchr_inv(mask, 0, len))
2185 return 0;
2186 err = nla_put(skb, val_type, len, val);
2187 if (err)
2188 return err;
2189 if (mask_type != TCA_FLOWER_UNSPEC) {
2190 err = nla_put(skb, mask_type, len, mask);
2191 if (err)
2192 return err;
2193 }
2194 return 0;
2195 }
2196
2197 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2198 struct fl_flow_key *mask)
2199 {
2200 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2201 TCA_FLOWER_KEY_PORT_DST_MIN,
2202 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2203 sizeof(key->tp_range.tp_min.dst)) ||
2204 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2205 TCA_FLOWER_KEY_PORT_DST_MAX,
2206 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2207 sizeof(key->tp_range.tp_max.dst)) ||
2208 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2209 TCA_FLOWER_KEY_PORT_SRC_MIN,
2210 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2211 sizeof(key->tp_range.tp_min.src)) ||
2212 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2213 TCA_FLOWER_KEY_PORT_SRC_MAX,
2214 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2215 sizeof(key->tp_range.tp_max.src)))
2216 return -1;
2217
2218 return 0;
2219 }
2220
2221 static int fl_dump_key_mpls(struct sk_buff *skb,
2222 struct flow_dissector_key_mpls *mpls_key,
2223 struct flow_dissector_key_mpls *mpls_mask)
2224 {
2225 int err;
2226
2227 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
2228 return 0;
2229 if (mpls_mask->mpls_ttl) {
2230 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2231 mpls_key->mpls_ttl);
2232 if (err)
2233 return err;
2234 }
2235 if (mpls_mask->mpls_tc) {
2236 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2237 mpls_key->mpls_tc);
2238 if (err)
2239 return err;
2240 }
2241 if (mpls_mask->mpls_label) {
2242 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2243 mpls_key->mpls_label);
2244 if (err)
2245 return err;
2246 }
2247 if (mpls_mask->mpls_bos) {
2248 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2249 mpls_key->mpls_bos);
2250 if (err)
2251 return err;
2252 }
2253 return 0;
2254 }
2255
2256 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2257 struct flow_dissector_key_ip *key,
2258 struct flow_dissector_key_ip *mask)
2259 {
2260 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2261 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2262 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2263 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2264
2265 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2266 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2267 return -1;
2268
2269 return 0;
2270 }
2271
2272 static int fl_dump_key_vlan(struct sk_buff *skb,
2273 int vlan_id_key, int vlan_prio_key,
2274 struct flow_dissector_key_vlan *vlan_key,
2275 struct flow_dissector_key_vlan *vlan_mask)
2276 {
2277 int err;
2278
2279 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2280 return 0;
2281 if (vlan_mask->vlan_id) {
2282 err = nla_put_u16(skb, vlan_id_key,
2283 vlan_key->vlan_id);
2284 if (err)
2285 return err;
2286 }
2287 if (vlan_mask->vlan_priority) {
2288 err = nla_put_u8(skb, vlan_prio_key,
2289 vlan_key->vlan_priority);
2290 if (err)
2291 return err;
2292 }
2293 return 0;
2294 }
2295
2296 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2297 u32 *flower_key, u32 *flower_mask,
2298 u32 flower_flag_bit, u32 dissector_flag_bit)
2299 {
2300 if (dissector_mask & dissector_flag_bit) {
2301 *flower_mask |= flower_flag_bit;
2302 if (dissector_key & dissector_flag_bit)
2303 *flower_key |= flower_flag_bit;
2304 }
2305 }
2306
2307 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2308 {
2309 u32 key, mask;
2310 __be32 _key, _mask;
2311 int err;
2312
2313 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2314 return 0;
2315
2316 key = 0;
2317 mask = 0;
2318
2319 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2320 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2321 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2322 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2323 FLOW_DIS_FIRST_FRAG);
2324
2325 _key = cpu_to_be32(key);
2326 _mask = cpu_to_be32(mask);
2327
2328 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2329 if (err)
2330 return err;
2331
2332 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2333 }
2334
2335 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2336 struct flow_dissector_key_enc_opts *enc_opts)
2337 {
2338 struct geneve_opt *opt;
2339 struct nlattr *nest;
2340 int opt_off = 0;
2341
2342 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2343 if (!nest)
2344 goto nla_put_failure;
2345
2346 while (enc_opts->len > opt_off) {
2347 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2348
2349 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2350 opt->opt_class))
2351 goto nla_put_failure;
2352 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2353 opt->type))
2354 goto nla_put_failure;
2355 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2356 opt->length * 4, opt->opt_data))
2357 goto nla_put_failure;
2358
2359 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2360 }
2361 nla_nest_end(skb, nest);
2362 return 0;
2363
2364 nla_put_failure:
2365 nla_nest_cancel(skb, nest);
2366 return -EMSGSIZE;
2367 }
2368
2369 static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2370 struct flow_dissector_key_enc_opts *enc_opts)
2371 {
2372 struct vxlan_metadata *md;
2373 struct nlattr *nest;
2374
2375 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2376 if (!nest)
2377 goto nla_put_failure;
2378
2379 md = (struct vxlan_metadata *)&enc_opts->data[0];
2380 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2381 goto nla_put_failure;
2382
2383 nla_nest_end(skb, nest);
2384 return 0;
2385
2386 nla_put_failure:
2387 nla_nest_cancel(skb, nest);
2388 return -EMSGSIZE;
2389 }
2390
2391 static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2392 struct flow_dissector_key_enc_opts *enc_opts)
2393 {
2394 struct erspan_metadata *md;
2395 struct nlattr *nest;
2396
2397 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2398 if (!nest)
2399 goto nla_put_failure;
2400
2401 md = (struct erspan_metadata *)&enc_opts->data[0];
2402 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2403 goto nla_put_failure;
2404
2405 if (md->version == 1 &&
2406 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2407 goto nla_put_failure;
2408
2409 if (md->version == 2 &&
2410 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2411 md->u.md2.dir) ||
2412 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2413 get_hwid(&md->u.md2))))
2414 goto nla_put_failure;
2415
2416 nla_nest_end(skb, nest);
2417 return 0;
2418
2419 nla_put_failure:
2420 nla_nest_cancel(skb, nest);
2421 return -EMSGSIZE;
2422 }
2423
2424 static int fl_dump_key_ct(struct sk_buff *skb,
2425 struct flow_dissector_key_ct *key,
2426 struct flow_dissector_key_ct *mask)
2427 {
2428 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2429 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2430 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2431 sizeof(key->ct_state)))
2432 goto nla_put_failure;
2433
2434 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2435 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2436 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2437 sizeof(key->ct_zone)))
2438 goto nla_put_failure;
2439
2440 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2441 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2442 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2443 sizeof(key->ct_mark)))
2444 goto nla_put_failure;
2445
2446 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2447 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2448 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2449 sizeof(key->ct_labels)))
2450 goto nla_put_failure;
2451
2452 return 0;
2453
2454 nla_put_failure:
2455 return -EMSGSIZE;
2456 }
2457
2458 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2459 struct flow_dissector_key_enc_opts *enc_opts)
2460 {
2461 struct nlattr *nest;
2462 int err;
2463
2464 if (!enc_opts->len)
2465 return 0;
2466
2467 nest = nla_nest_start_noflag(skb, enc_opt_type);
2468 if (!nest)
2469 goto nla_put_failure;
2470
2471 switch (enc_opts->dst_opt_type) {
2472 case TUNNEL_GENEVE_OPT:
2473 err = fl_dump_key_geneve_opt(skb, enc_opts);
2474 if (err)
2475 goto nla_put_failure;
2476 break;
2477 case TUNNEL_VXLAN_OPT:
2478 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2479 if (err)
2480 goto nla_put_failure;
2481 break;
2482 case TUNNEL_ERSPAN_OPT:
2483 err = fl_dump_key_erspan_opt(skb, enc_opts);
2484 if (err)
2485 goto nla_put_failure;
2486 break;
2487 default:
2488 goto nla_put_failure;
2489 }
2490 nla_nest_end(skb, nest);
2491 return 0;
2492
2493 nla_put_failure:
2494 nla_nest_cancel(skb, nest);
2495 return -EMSGSIZE;
2496 }
2497
2498 static int fl_dump_key_enc_opt(struct sk_buff *skb,
2499 struct flow_dissector_key_enc_opts *key_opts,
2500 struct flow_dissector_key_enc_opts *msk_opts)
2501 {
2502 int err;
2503
2504 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2505 if (err)
2506 return err;
2507
2508 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2509 }
2510
2511 static int fl_dump_key(struct sk_buff *skb, struct net *net,
2512 struct fl_flow_key *key, struct fl_flow_key *mask)
2513 {
2514 if (mask->meta.ingress_ifindex) {
2515 struct net_device *dev;
2516
2517 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
2518 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2519 goto nla_put_failure;
2520 }
2521
2522 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2523 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2524 sizeof(key->eth.dst)) ||
2525 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2526 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2527 sizeof(key->eth.src)) ||
2528 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2529 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2530 sizeof(key->basic.n_proto)))
2531 goto nla_put_failure;
2532
2533 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2534 goto nla_put_failure;
2535
2536 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2537 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
2538 goto nla_put_failure;
2539
2540 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2541 TCA_FLOWER_KEY_CVLAN_PRIO,
2542 &key->cvlan, &mask->cvlan) ||
2543 (mask->cvlan.vlan_tpid &&
2544 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2545 key->cvlan.vlan_tpid)))
2546 goto nla_put_failure;
2547
2548 if (mask->basic.n_proto) {
2549 if (mask->cvlan.vlan_tpid) {
2550 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2551 key->basic.n_proto))
2552 goto nla_put_failure;
2553 } else if (mask->vlan.vlan_tpid) {
2554 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2555 key->basic.n_proto))
2556 goto nla_put_failure;
2557 }
2558 }
2559
2560 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2561 key->basic.n_proto == htons(ETH_P_IPV6)) &&
2562 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
2563 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
2564 sizeof(key->basic.ip_proto)) ||
2565 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
2566 goto nla_put_failure;
2567
2568 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2569 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2570 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2571 sizeof(key->ipv4.src)) ||
2572 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2573 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2574 sizeof(key->ipv4.dst))))
2575 goto nla_put_failure;
2576 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2577 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2578 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2579 sizeof(key->ipv6.src)) ||
2580 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2581 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2582 sizeof(key->ipv6.dst))))
2583 goto nla_put_failure;
2584
2585 if (key->basic.ip_proto == IPPROTO_TCP &&
2586 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
2587 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
2588 sizeof(key->tp.src)) ||
2589 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
2590 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
2591 sizeof(key->tp.dst)) ||
2592 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2593 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2594 sizeof(key->tcp.flags))))
2595 goto nla_put_failure;
2596 else if (key->basic.ip_proto == IPPROTO_UDP &&
2597 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
2598 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
2599 sizeof(key->tp.src)) ||
2600 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
2601 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
2602 sizeof(key->tp.dst))))
2603 goto nla_put_failure;
2604 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2605 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2606 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2607 sizeof(key->tp.src)) ||
2608 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2609 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
2610 sizeof(key->tp.dst))))
2611 goto nla_put_failure;
2612 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2613 key->basic.ip_proto == IPPROTO_ICMP &&
2614 (fl_dump_key_val(skb, &key->icmp.type,
2615 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2616 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2617 sizeof(key->icmp.type)) ||
2618 fl_dump_key_val(skb, &key->icmp.code,
2619 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2620 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2621 sizeof(key->icmp.code))))
2622 goto nla_put_failure;
2623 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2624 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2625 (fl_dump_key_val(skb, &key->icmp.type,
2626 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2627 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2628 sizeof(key->icmp.type)) ||
2629 fl_dump_key_val(skb, &key->icmp.code,
2630 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2631 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2632 sizeof(key->icmp.code))))
2633 goto nla_put_failure;
2634 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2635 key->basic.n_proto == htons(ETH_P_RARP)) &&
2636 (fl_dump_key_val(skb, &key->arp.sip,
2637 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2638 TCA_FLOWER_KEY_ARP_SIP_MASK,
2639 sizeof(key->arp.sip)) ||
2640 fl_dump_key_val(skb, &key->arp.tip,
2641 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2642 TCA_FLOWER_KEY_ARP_TIP_MASK,
2643 sizeof(key->arp.tip)) ||
2644 fl_dump_key_val(skb, &key->arp.op,
2645 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2646 TCA_FLOWER_KEY_ARP_OP_MASK,
2647 sizeof(key->arp.op)) ||
2648 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2649 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2650 sizeof(key->arp.sha)) ||
2651 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2652 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2653 sizeof(key->arp.tha))))
2654 goto nla_put_failure;
2655
2656 if ((key->basic.ip_proto == IPPROTO_TCP ||
2657 key->basic.ip_proto == IPPROTO_UDP ||
2658 key->basic.ip_proto == IPPROTO_SCTP) &&
2659 fl_dump_key_port_range(skb, key, mask))
2660 goto nla_put_failure;
2661
2662 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2663 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2664 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2665 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2666 sizeof(key->enc_ipv4.src)) ||
2667 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2668 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2669 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2670 sizeof(key->enc_ipv4.dst))))
2671 goto nla_put_failure;
2672 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2673 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2674 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2675 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2676 sizeof(key->enc_ipv6.src)) ||
2677 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2678 TCA_FLOWER_KEY_ENC_IPV6_DST,
2679 &mask->enc_ipv6.dst,
2680 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2681 sizeof(key->enc_ipv6.dst))))
2682 goto nla_put_failure;
2683
2684 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
2685 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
2686 sizeof(key->enc_key_id)) ||
2687 fl_dump_key_val(skb, &key->enc_tp.src,
2688 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2689 &mask->enc_tp.src,
2690 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2691 sizeof(key->enc_tp.src)) ||
2692 fl_dump_key_val(skb, &key->enc_tp.dst,
2693 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2694 &mask->enc_tp.dst,
2695 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
2696 sizeof(key->enc_tp.dst)) ||
2697 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2698 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
2699 goto nla_put_failure;
2700
2701 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
2702 goto nla_put_failure;
2703
2704 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2705 goto nla_put_failure;
2706
2707 return 0;
2708
2709 nla_put_failure:
2710 return -EMSGSIZE;
2711 }
2712
2713 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2714 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
2715 {
2716 struct cls_fl_filter *f = fh;
2717 struct nlattr *nest;
2718 struct fl_flow_key *key, *mask;
2719 bool skip_hw;
2720
2721 if (!f)
2722 return skb->len;
2723
2724 t->tcm_handle = f->handle;
2725
2726 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2727 if (!nest)
2728 goto nla_put_failure;
2729
2730 spin_lock(&tp->lock);
2731
2732 if (f->res.classid &&
2733 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
2734 goto nla_put_failure_locked;
2735
2736 key = &f->key;
2737 mask = &f->mask->key;
2738 skip_hw = tc_skip_hw(f->flags);
2739
2740 if (fl_dump_key(skb, net, key, mask))
2741 goto nla_put_failure_locked;
2742
2743 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
2744 goto nla_put_failure_locked;
2745
2746 spin_unlock(&tp->lock);
2747
2748 if (!skip_hw)
2749 fl_hw_update_stats(tp, f, rtnl_held);
2750
2751 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2752 goto nla_put_failure;
2753
2754 if (tcf_exts_dump(skb, &f->exts))
2755 goto nla_put_failure;
2756
2757 nla_nest_end(skb, nest);
2758
2759 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2760 goto nla_put_failure;
2761
2762 return skb->len;
2763
2764 nla_put_failure_locked:
2765 spin_unlock(&tp->lock);
2766 nla_put_failure:
2767 nla_nest_cancel(skb, nest);
2768 return -1;
2769 }
2770
2771 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2772 {
2773 struct fl_flow_tmplt *tmplt = tmplt_priv;
2774 struct fl_flow_key *key, *mask;
2775 struct nlattr *nest;
2776
2777 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2778 if (!nest)
2779 goto nla_put_failure;
2780
2781 key = &tmplt->dummy_key;
2782 mask = &tmplt->mask;
2783
2784 if (fl_dump_key(skb, net, key, mask))
2785 goto nla_put_failure;
2786
2787 nla_nest_end(skb, nest);
2788
2789 return skb->len;
2790
2791 nla_put_failure:
2792 nla_nest_cancel(skb, nest);
2793 return -EMSGSIZE;
2794 }
2795
2796 static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
2797 unsigned long base)
2798 {
2799 struct cls_fl_filter *f = fh;
2800
2801 if (f && f->res.classid == classid) {
2802 if (cl)
2803 __tcf_bind_filter(q, &f->res, base);
2804 else
2805 __tcf_unbind_filter(q, &f->res);
2806 }
2807 }
2808
2809 static bool fl_delete_empty(struct tcf_proto *tp)
2810 {
2811 struct cls_fl_head *head = fl_head_dereference(tp);
2812
2813 spin_lock(&tp->lock);
2814 tp->deleting = idr_is_empty(&head->handle_idr);
2815 spin_unlock(&tp->lock);
2816
2817 return tp->deleting;
2818 }
2819
2820 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2821 .kind = "flower",
2822 .classify = fl_classify,
2823 .init = fl_init,
2824 .destroy = fl_destroy,
2825 .get = fl_get,
2826 .put = fl_put,
2827 .change = fl_change,
2828 .delete = fl_delete,
2829 .delete_empty = fl_delete_empty,
2830 .walk = fl_walk,
2831 .reoffload = fl_reoffload,
2832 .hw_add = fl_hw_add,
2833 .hw_del = fl_hw_del,
2834 .dump = fl_dump,
2835 .bind_class = fl_bind_class,
2836 .tmplt_create = fl_tmplt_create,
2837 .tmplt_destroy = fl_tmplt_destroy,
2838 .tmplt_dump = fl_tmplt_dump,
2839 .owner = THIS_MODULE,
2840 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
2841 };
2842
2843 static int __init cls_fl_init(void)
2844 {
2845 return register_tcf_proto_ops(&cls_fl_ops);
2846 }
2847
2848 static void __exit cls_fl_exit(void)
2849 {
2850 unregister_tcf_proto_ops(&cls_fl_ops);
2851 }
2852
2853 module_init(cls_fl_init);
2854 module_exit(cls_fl_exit);
2855
2856 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2857 MODULE_DESCRIPTION("Flower classifier");
2858 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support