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