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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * net/sched/cls_flower.c Flower classifier
4 *
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
6 */
7
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/module.h>
11#include <linux/rhashtable.h>
12#include <linux/workqueue.h>
13#include <linux/refcount.h>
14#include <linux/bitfield.h>
15
16#include <linux/if_ether.h>
17#include <linux/in6.h>
18#include <linux/ip.h>
19#include <linux/mpls.h>
20#include <linux/ppp_defs.h>
21
22#include <net/sch_generic.h>
23#include <net/pkt_cls.h>
24#include <net/pkt_sched.h>
25#include <net/ip.h>
26#include <net/flow_dissector.h>
27#include <net/geneve.h>
28#include <net/vxlan.h>
29#include <net/erspan.h>
30#include <net/gtp.h>
31#include <net/tc_wrapper.h>
32
33#include <net/dst.h>
34#include <net/dst_metadata.h>
35
36#include <uapi/linux/netfilter/nf_conntrack_common.h>
37
38#define TCA_FLOWER_KEY_CT_FLAGS_MAX \
39 ((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
40#define TCA_FLOWER_KEY_CT_FLAGS_MASK \
41 (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
42
43struct fl_flow_key {
44 struct flow_dissector_key_meta meta;
45 struct flow_dissector_key_control control;
46 struct flow_dissector_key_control enc_control;
47 struct flow_dissector_key_basic basic;
48 struct flow_dissector_key_eth_addrs eth;
49 struct flow_dissector_key_vlan vlan;
50 struct flow_dissector_key_vlan cvlan;
51 union {
52 struct flow_dissector_key_ipv4_addrs ipv4;
53 struct flow_dissector_key_ipv6_addrs ipv6;
54 };
55 struct flow_dissector_key_ports tp;
56 struct flow_dissector_key_icmp icmp;
57 struct flow_dissector_key_arp arp;
58 struct flow_dissector_key_keyid enc_key_id;
59 union {
60 struct flow_dissector_key_ipv4_addrs enc_ipv4;
61 struct flow_dissector_key_ipv6_addrs enc_ipv6;
62 };
63 struct flow_dissector_key_ports enc_tp;
64 struct flow_dissector_key_mpls mpls;
65 struct flow_dissector_key_tcp tcp;
66 struct flow_dissector_key_ip ip;
67 struct flow_dissector_key_ip enc_ip;
68 struct flow_dissector_key_enc_opts enc_opts;
69 struct flow_dissector_key_ports_range tp_range;
70 struct flow_dissector_key_ct ct;
71 struct flow_dissector_key_hash hash;
72 struct flow_dissector_key_num_of_vlans num_of_vlans;
73 struct flow_dissector_key_pppoe pppoe;
74 struct flow_dissector_key_l2tpv3 l2tpv3;
75 struct flow_dissector_key_ipsec ipsec;
76 struct flow_dissector_key_cfm cfm;
77} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
78
79struct fl_flow_mask_range {
80 unsigned short int start;
81 unsigned short int end;
82};
83
84struct fl_flow_mask {
85 struct fl_flow_key key;
86 struct fl_flow_mask_range range;
87 u32 flags;
88 struct rhash_head ht_node;
89 struct rhashtable ht;
90 struct rhashtable_params filter_ht_params;
91 struct flow_dissector dissector;
92 struct list_head filters;
93 struct rcu_work rwork;
94 struct list_head list;
95 refcount_t refcnt;
96};
97
98struct fl_flow_tmplt {
99 struct fl_flow_key dummy_key;
100 struct fl_flow_key mask;
101 struct flow_dissector dissector;
102 struct tcf_chain *chain;
103};
104
105struct cls_fl_head {
106 struct rhashtable ht;
107 spinlock_t masks_lock; /* Protect masks list */
108 struct list_head masks;
109 struct list_head hw_filters;
110 struct rcu_work rwork;
111 struct idr handle_idr;
112};
113
114struct cls_fl_filter {
115 struct fl_flow_mask *mask;
116 struct rhash_head ht_node;
117 struct fl_flow_key mkey;
118 struct tcf_exts exts;
119 struct tcf_result res;
120 struct fl_flow_key key;
121 struct list_head list;
122 struct list_head hw_list;
123 u32 handle;
124 u32 flags;
125 u32 in_hw_count;
126 u8 needs_tc_skb_ext:1;
127 struct rcu_work rwork;
128 struct net_device *hw_dev;
129 /* Flower classifier is unlocked, which means that its reference counter
130 * can be changed concurrently without any kind of external
131 * synchronization. Use atomic reference counter to be concurrency-safe.
132 */
133 refcount_t refcnt;
134 bool deleted;
135};
136
137static const struct rhashtable_params mask_ht_params = {
138 .key_offset = offsetof(struct fl_flow_mask, key),
139 .key_len = sizeof(struct fl_flow_key),
140 .head_offset = offsetof(struct fl_flow_mask, ht_node),
141 .automatic_shrinking = true,
142};
143
144static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
145{
146 return mask->range.end - mask->range.start;
147}
148
149static void fl_mask_update_range(struct fl_flow_mask *mask)
150{
151 const u8 *bytes = (const u8 *) &mask->key;
152 size_t size = sizeof(mask->key);
153 size_t i, first = 0, last;
154
155 for (i = 0; i < size; i++) {
156 if (bytes[i]) {
157 first = i;
158 break;
159 }
160 }
161 last = first;
162 for (i = size - 1; i != first; i--) {
163 if (bytes[i]) {
164 last = i;
165 break;
166 }
167 }
168 mask->range.start = rounddown(first, sizeof(long));
169 mask->range.end = roundup(last + 1, sizeof(long));
170}
171
172static void *fl_key_get_start(struct fl_flow_key *key,
173 const struct fl_flow_mask *mask)
174{
175 return (u8 *) key + mask->range.start;
176}
177
178static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
179 struct fl_flow_mask *mask)
180{
181 const long *lkey = fl_key_get_start(key, mask);
182 const long *lmask = fl_key_get_start(&mask->key, mask);
183 long *lmkey = fl_key_get_start(mkey, mask);
184 int i;
185
186 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
187 *lmkey++ = *lkey++ & *lmask++;
188}
189
190static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
191 struct fl_flow_mask *mask)
192{
193 const long *lmask = fl_key_get_start(&mask->key, mask);
194 const long *ltmplt;
195 int i;
196
197 if (!tmplt)
198 return true;
199 ltmplt = fl_key_get_start(&tmplt->mask, mask);
200 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
201 if (~*ltmplt++ & *lmask++)
202 return false;
203 }
204 return true;
205}
206
207static void fl_clear_masked_range(struct fl_flow_key *key,
208 struct fl_flow_mask *mask)
209{
210 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
211}
212
213static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
214 struct fl_flow_key *key,
215 struct fl_flow_key *mkey)
216{
217 u16 min_mask, max_mask, min_val, max_val;
218
219 min_mask = ntohs(filter->mask->key.tp_range.tp_min.dst);
220 max_mask = ntohs(filter->mask->key.tp_range.tp_max.dst);
221 min_val = ntohs(filter->key.tp_range.tp_min.dst);
222 max_val = ntohs(filter->key.tp_range.tp_max.dst);
223
224 if (min_mask && max_mask) {
225 if (ntohs(key->tp_range.tp.dst) < min_val ||
226 ntohs(key->tp_range.tp.dst) > max_val)
227 return false;
228
229 /* skb does not have min and max values */
230 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
231 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
232 }
233 return true;
234}
235
236static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
237 struct fl_flow_key *key,
238 struct fl_flow_key *mkey)
239{
240 u16 min_mask, max_mask, min_val, max_val;
241
242 min_mask = ntohs(filter->mask->key.tp_range.tp_min.src);
243 max_mask = ntohs(filter->mask->key.tp_range.tp_max.src);
244 min_val = ntohs(filter->key.tp_range.tp_min.src);
245 max_val = ntohs(filter->key.tp_range.tp_max.src);
246
247 if (min_mask && max_mask) {
248 if (ntohs(key->tp_range.tp.src) < min_val ||
249 ntohs(key->tp_range.tp.src) > max_val)
250 return false;
251
252 /* skb does not have min and max values */
253 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
254 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
255 }
256 return true;
257}
258
259static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
260 struct fl_flow_key *mkey)
261{
262 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
263 mask->filter_ht_params);
264}
265
266static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
267 struct fl_flow_key *mkey,
268 struct fl_flow_key *key)
269{
270 struct cls_fl_filter *filter, *f;
271
272 list_for_each_entry_rcu(filter, &mask->filters, list) {
273 if (!fl_range_port_dst_cmp(filter, key, mkey))
274 continue;
275
276 if (!fl_range_port_src_cmp(filter, key, mkey))
277 continue;
278
279 f = __fl_lookup(mask, mkey);
280 if (f)
281 return f;
282 }
283 return NULL;
284}
285
286static noinline_for_stack
287struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
288{
289 struct fl_flow_key mkey;
290
291 fl_set_masked_key(&mkey, key, mask);
292 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
293 return fl_lookup_range(mask, &mkey, key);
294
295 return __fl_lookup(mask, &mkey);
296}
297
298static u16 fl_ct_info_to_flower_map[] = {
299 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
300 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
301 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
302 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
303 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
304 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
305 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
306 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
307 TCA_FLOWER_KEY_CT_FLAGS_RELATED |
308 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
309 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
310 TCA_FLOWER_KEY_CT_FLAGS_NEW,
311};
312
313TC_INDIRECT_SCOPE int fl_classify(struct sk_buff *skb,
314 const struct tcf_proto *tp,
315 struct tcf_result *res)
316{
317 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
318 bool post_ct = tc_skb_cb(skb)->post_ct;
319 u16 zone = tc_skb_cb(skb)->zone;
320 struct fl_flow_key skb_key;
321 struct fl_flow_mask *mask;
322 struct cls_fl_filter *f;
323
324 list_for_each_entry_rcu(mask, &head->masks, list) {
325 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
326 fl_clear_masked_range(&skb_key, mask);
327
328 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
329 /* skb_flow_dissect() does not set n_proto in case an unknown
330 * protocol, so do it rather here.
331 */
332 skb_key.basic.n_proto = skb_protocol(skb, false);
333 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
334 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
335 fl_ct_info_to_flower_map,
336 ARRAY_SIZE(fl_ct_info_to_flower_map),
337 post_ct, zone);
338 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
339 skb_flow_dissect(skb, &mask->dissector, &skb_key,
340 FLOW_DISSECTOR_F_STOP_BEFORE_ENCAP);
341
342 f = fl_mask_lookup(mask, &skb_key);
343 if (f && !tc_skip_sw(f->flags)) {
344 *res = f->res;
345 return tcf_exts_exec(skb, &f->exts, res);
346 }
347 }
348 return -1;
349}
350
351static int fl_init(struct tcf_proto *tp)
352{
353 struct cls_fl_head *head;
354
355 head = kzalloc(sizeof(*head), GFP_KERNEL);
356 if (!head)
357 return -ENOBUFS;
358
359 spin_lock_init(&head->masks_lock);
360 INIT_LIST_HEAD_RCU(&head->masks);
361 INIT_LIST_HEAD(&head->hw_filters);
362 rcu_assign_pointer(tp->root, head);
363 idr_init(&head->handle_idr);
364
365 return rhashtable_init(&head->ht, &mask_ht_params);
366}
367
368static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
369{
370 /* temporary masks don't have their filters list and ht initialized */
371 if (mask_init_done) {
372 WARN_ON(!list_empty(&mask->filters));
373 rhashtable_destroy(&mask->ht);
374 }
375 kfree(mask);
376}
377
378static void fl_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, true);
384}
385
386static void fl_uninit_mask_free_work(struct work_struct *work)
387{
388 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
389 struct fl_flow_mask, rwork);
390
391 fl_mask_free(mask, false);
392}
393
394static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
395{
396 if (!refcount_dec_and_test(&mask->refcnt))
397 return false;
398
399 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
400
401 spin_lock(&head->masks_lock);
402 list_del_rcu(&mask->list);
403 spin_unlock(&head->masks_lock);
404
405 tcf_queue_work(&mask->rwork, fl_mask_free_work);
406
407 return true;
408}
409
410static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
411{
412 /* Flower classifier only changes root pointer during init and destroy.
413 * Users must obtain reference to tcf_proto instance before calling its
414 * API, so tp->root pointer is protected from concurrent call to
415 * fl_destroy() by reference counting.
416 */
417 return rcu_dereference_raw(tp->root);
418}
419
420static void __fl_destroy_filter(struct cls_fl_filter *f)
421{
422 if (f->needs_tc_skb_ext)
423 tc_skb_ext_tc_disable();
424 tcf_exts_destroy(&f->exts);
425 tcf_exts_put_net(&f->exts);
426 kfree(f);
427}
428
429static void fl_destroy_filter_work(struct work_struct *work)
430{
431 struct cls_fl_filter *f = container_of(to_rcu_work(work),
432 struct cls_fl_filter, rwork);
433
434 __fl_destroy_filter(f);
435}
436
437static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
438 bool rtnl_held, struct netlink_ext_ack *extack)
439{
440 struct tcf_block *block = tp->chain->block;
441 struct flow_cls_offload cls_flower = {};
442
443 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
444 cls_flower.command = FLOW_CLS_DESTROY;
445 cls_flower.cookie = (unsigned long) f;
446
447 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
448 &f->flags, &f->in_hw_count, rtnl_held);
449
450}
451
452static int fl_hw_replace_filter(struct tcf_proto *tp,
453 struct cls_fl_filter *f, bool rtnl_held,
454 struct netlink_ext_ack *extack)
455{
456 struct tcf_block *block = tp->chain->block;
457 struct flow_cls_offload cls_flower = {};
458 bool skip_sw = tc_skip_sw(f->flags);
459 int err = 0;
460
461 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
462 if (!cls_flower.rule)
463 return -ENOMEM;
464
465 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
466 cls_flower.command = FLOW_CLS_REPLACE;
467 cls_flower.cookie = (unsigned long) f;
468 cls_flower.rule->match.dissector = &f->mask->dissector;
469 cls_flower.rule->match.mask = &f->mask->key;
470 cls_flower.rule->match.key = &f->mkey;
471 cls_flower.classid = f->res.classid;
472
473 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
474 cls_flower.common.extack);
475 if (err) {
476 kfree(cls_flower.rule);
477
478 return skip_sw ? err : 0;
479 }
480
481 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
482 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
483 tc_cleanup_offload_action(&cls_flower.rule->action);
484 kfree(cls_flower.rule);
485
486 if (err) {
487 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
488 return err;
489 }
490
491 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
492 return -EINVAL;
493
494 return 0;
495}
496
497static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
498 bool rtnl_held)
499{
500 struct tcf_block *block = tp->chain->block;
501 struct flow_cls_offload cls_flower = {};
502
503 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
504 cls_flower.command = FLOW_CLS_STATS;
505 cls_flower.cookie = (unsigned long) f;
506 cls_flower.classid = f->res.classid;
507
508 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
509 rtnl_held);
510
511 tcf_exts_hw_stats_update(&f->exts, &cls_flower.stats, cls_flower.use_act_stats);
512}
513
514static void __fl_put(struct cls_fl_filter *f)
515{
516 if (!refcount_dec_and_test(&f->refcnt))
517 return;
518
519 if (tcf_exts_get_net(&f->exts))
520 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
521 else
522 __fl_destroy_filter(f);
523}
524
525static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
526{
527 struct cls_fl_filter *f;
528
529 rcu_read_lock();
530 f = idr_find(&head->handle_idr, handle);
531 if (f && !refcount_inc_not_zero(&f->refcnt))
532 f = NULL;
533 rcu_read_unlock();
534
535 return f;
536}
537
538static struct tcf_exts *fl_get_exts(const struct tcf_proto *tp, u32 handle)
539{
540 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
541 struct cls_fl_filter *f;
542
543 f = idr_find(&head->handle_idr, handle);
544 return f ? &f->exts : NULL;
545}
546
547static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
548 bool *last, bool rtnl_held,
549 struct netlink_ext_ack *extack)
550{
551 struct cls_fl_head *head = fl_head_dereference(tp);
552
553 *last = false;
554
555 spin_lock(&tp->lock);
556 if (f->deleted) {
557 spin_unlock(&tp->lock);
558 return -ENOENT;
559 }
560
561 f->deleted = true;
562 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
563 f->mask->filter_ht_params);
564 idr_remove(&head->handle_idr, f->handle);
565 list_del_rcu(&f->list);
566 spin_unlock(&tp->lock);
567
568 *last = fl_mask_put(head, f->mask);
569 if (!tc_skip_hw(f->flags))
570 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
571 tcf_unbind_filter(tp, &f->res);
572 __fl_put(f);
573
574 return 0;
575}
576
577static void fl_destroy_sleepable(struct work_struct *work)
578{
579 struct cls_fl_head *head = container_of(to_rcu_work(work),
580 struct cls_fl_head,
581 rwork);
582
583 rhashtable_destroy(&head->ht);
584 kfree(head);
585 module_put(THIS_MODULE);
586}
587
588static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
589 struct netlink_ext_ack *extack)
590{
591 struct cls_fl_head *head = fl_head_dereference(tp);
592 struct fl_flow_mask *mask, *next_mask;
593 struct cls_fl_filter *f, *next;
594 bool last;
595
596 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
597 list_for_each_entry_safe(f, next, &mask->filters, list) {
598 __fl_delete(tp, f, &last, rtnl_held, extack);
599 if (last)
600 break;
601 }
602 }
603 idr_destroy(&head->handle_idr);
604
605 __module_get(THIS_MODULE);
606 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
607}
608
609static void fl_put(struct tcf_proto *tp, void *arg)
610{
611 struct cls_fl_filter *f = arg;
612
613 __fl_put(f);
614}
615
616static void *fl_get(struct tcf_proto *tp, u32 handle)
617{
618 struct cls_fl_head *head = fl_head_dereference(tp);
619
620 return __fl_get(head, handle);
621}
622
623static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
624 [TCA_FLOWER_UNSPEC] = { .strict_start_type =
625 TCA_FLOWER_L2_MISS },
626 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
627 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
628 .len = IFNAMSIZ },
629 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
630 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
631 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
632 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
633 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
634 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
635 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
636 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
637 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
638 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
639 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
640 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
641 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
642 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
643 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
644 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
645 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
646 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
647 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
648 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
649 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
650 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
651 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
652 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
653 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
654 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
655 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
656 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
657 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
658 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
659 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
660 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
661 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
662 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
663 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
664 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
665 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
666 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
667 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
668 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
669 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
670 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
671 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
672 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
673 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
674 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
675 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
678 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
679 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
680 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
681 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
682 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
683 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
684 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
685 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
686 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
687 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
688 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
689 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
690 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
691 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
692 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
693 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
694 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
695 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
696 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
697 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
698 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
699 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
700 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
701 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
702 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
703 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
704 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
705 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
706 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
707 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
708 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
709 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
710 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
711 [TCA_FLOWER_KEY_CT_STATE] =
712 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
713 [TCA_FLOWER_KEY_CT_STATE_MASK] =
714 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
715 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
716 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
717 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
718 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
719 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
720 .len = 128 / BITS_PER_BYTE },
721 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
722 .len = 128 / BITS_PER_BYTE },
723 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
724 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
725 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
726 [TCA_FLOWER_KEY_NUM_OF_VLANS] = { .type = NLA_U8 },
727 [TCA_FLOWER_KEY_PPPOE_SID] = { .type = NLA_U16 },
728 [TCA_FLOWER_KEY_PPP_PROTO] = { .type = NLA_U16 },
729 [TCA_FLOWER_KEY_L2TPV3_SID] = { .type = NLA_U32 },
730 [TCA_FLOWER_KEY_SPI] = { .type = NLA_U32 },
731 [TCA_FLOWER_KEY_SPI_MASK] = { .type = NLA_U32 },
732 [TCA_FLOWER_L2_MISS] = NLA_POLICY_MAX(NLA_U8, 1),
733 [TCA_FLOWER_KEY_CFM] = { .type = NLA_NESTED },
734};
735
736static const struct nla_policy
737enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
738 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
739 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
740 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
741 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
742 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
743 [TCA_FLOWER_KEY_ENC_OPTS_GTP] = { .type = NLA_NESTED },
744};
745
746static const struct nla_policy
747geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
748 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
749 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
750 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
751 .len = 128 },
752};
753
754static const struct nla_policy
755vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
756 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
757};
758
759static const struct nla_policy
760erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
761 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
762 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
763 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
764 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
765};
766
767static const struct nla_policy
768gtp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1] = {
769 [TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] = { .type = NLA_U8 },
770 [TCA_FLOWER_KEY_ENC_OPT_GTP_QFI] = { .type = NLA_U8 },
771};
772
773static const struct nla_policy
774mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
775 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
776 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
777 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
778 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
779 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
780};
781
782static const struct nla_policy
783cfm_opt_policy[TCA_FLOWER_KEY_CFM_OPT_MAX + 1] = {
784 [TCA_FLOWER_KEY_CFM_MD_LEVEL] = NLA_POLICY_MAX(NLA_U8,
785 FLOW_DIS_CFM_MDL_MAX),
786 [TCA_FLOWER_KEY_CFM_OPCODE] = { .type = NLA_U8 },
787};
788
789static void fl_set_key_val(struct nlattr **tb,
790 void *val, int val_type,
791 void *mask, int mask_type, int len)
792{
793 if (!tb[val_type])
794 return;
795 nla_memcpy(val, tb[val_type], len);
796 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
797 memset(mask, 0xff, len);
798 else
799 nla_memcpy(mask, tb[mask_type], len);
800}
801
802static int fl_set_key_spi(struct nlattr **tb, struct fl_flow_key *key,
803 struct fl_flow_key *mask,
804 struct netlink_ext_ack *extack)
805{
806 if (key->basic.ip_proto != IPPROTO_ESP &&
807 key->basic.ip_proto != IPPROTO_AH) {
808 NL_SET_ERR_MSG(extack,
809 "Protocol must be either ESP or AH");
810 return -EINVAL;
811 }
812
813 fl_set_key_val(tb, &key->ipsec.spi,
814 TCA_FLOWER_KEY_SPI,
815 &mask->ipsec.spi, TCA_FLOWER_KEY_SPI_MASK,
816 sizeof(key->ipsec.spi));
817 return 0;
818}
819
820static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
821 struct fl_flow_key *mask,
822 struct netlink_ext_ack *extack)
823{
824 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
825 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
826 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
827 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
828 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
829 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
830 fl_set_key_val(tb, &key->tp_range.tp_min.src,
831 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
832 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
833 fl_set_key_val(tb, &key->tp_range.tp_max.src,
834 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
835 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
836
837 if (mask->tp_range.tp_min.dst != mask->tp_range.tp_max.dst) {
838 NL_SET_ERR_MSG(extack,
839 "Both min and max destination ports must be specified");
840 return -EINVAL;
841 }
842 if (mask->tp_range.tp_min.src != mask->tp_range.tp_max.src) {
843 NL_SET_ERR_MSG(extack,
844 "Both min and max source ports must be specified");
845 return -EINVAL;
846 }
847 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
848 ntohs(key->tp_range.tp_max.dst) <=
849 ntohs(key->tp_range.tp_min.dst)) {
850 NL_SET_ERR_MSG_ATTR(extack,
851 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
852 "Invalid destination port range (min must be strictly smaller than max)");
853 return -EINVAL;
854 }
855 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
856 ntohs(key->tp_range.tp_max.src) <=
857 ntohs(key->tp_range.tp_min.src)) {
858 NL_SET_ERR_MSG_ATTR(extack,
859 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
860 "Invalid source port range (min must be strictly smaller than max)");
861 return -EINVAL;
862 }
863
864 return 0;
865}
866
867static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
868 struct flow_dissector_key_mpls *key_val,
869 struct flow_dissector_key_mpls *key_mask,
870 struct netlink_ext_ack *extack)
871{
872 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
873 struct flow_dissector_mpls_lse *lse_mask;
874 struct flow_dissector_mpls_lse *lse_val;
875 u8 lse_index;
876 u8 depth;
877 int err;
878
879 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
880 mpls_stack_entry_policy, extack);
881 if (err < 0)
882 return err;
883
884 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
885 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
886 return -EINVAL;
887 }
888
889 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
890
891 /* LSE depth starts at 1, for consistency with terminology used by
892 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
893 */
894 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
895 NL_SET_ERR_MSG_ATTR(extack,
896 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
897 "Invalid MPLS depth");
898 return -EINVAL;
899 }
900 lse_index = depth - 1;
901
902 dissector_set_mpls_lse(key_val, lse_index);
903 dissector_set_mpls_lse(key_mask, lse_index);
904
905 lse_val = &key_val->ls[lse_index];
906 lse_mask = &key_mask->ls[lse_index];
907
908 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
909 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
910 lse_mask->mpls_ttl = MPLS_TTL_MASK;
911 }
912 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
913 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
914
915 if (bos & ~MPLS_BOS_MASK) {
916 NL_SET_ERR_MSG_ATTR(extack,
917 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
918 "Bottom Of Stack (BOS) must be 0 or 1");
919 return -EINVAL;
920 }
921 lse_val->mpls_bos = bos;
922 lse_mask->mpls_bos = MPLS_BOS_MASK;
923 }
924 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
925 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
926
927 if (tc & ~MPLS_TC_MASK) {
928 NL_SET_ERR_MSG_ATTR(extack,
929 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
930 "Traffic Class (TC) must be between 0 and 7");
931 return -EINVAL;
932 }
933 lse_val->mpls_tc = tc;
934 lse_mask->mpls_tc = MPLS_TC_MASK;
935 }
936 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
937 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
938
939 if (label & ~MPLS_LABEL_MASK) {
940 NL_SET_ERR_MSG_ATTR(extack,
941 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
942 "Label must be between 0 and 1048575");
943 return -EINVAL;
944 }
945 lse_val->mpls_label = label;
946 lse_mask->mpls_label = MPLS_LABEL_MASK;
947 }
948
949 return 0;
950}
951
952static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
953 struct flow_dissector_key_mpls *key_val,
954 struct flow_dissector_key_mpls *key_mask,
955 struct netlink_ext_ack *extack)
956{
957 struct nlattr *nla_lse;
958 int rem;
959 int err;
960
961 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
962 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
963 "NLA_F_NESTED is missing");
964 return -EINVAL;
965 }
966
967 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
968 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
969 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
970 "Invalid MPLS option type");
971 return -EINVAL;
972 }
973
974 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
975 if (err < 0)
976 return err;
977 }
978 if (rem) {
979 NL_SET_ERR_MSG(extack,
980 "Bytes leftover after parsing MPLS options");
981 return -EINVAL;
982 }
983
984 return 0;
985}
986
987static int fl_set_key_mpls(struct nlattr **tb,
988 struct flow_dissector_key_mpls *key_val,
989 struct flow_dissector_key_mpls *key_mask,
990 struct netlink_ext_ack *extack)
991{
992 struct flow_dissector_mpls_lse *lse_mask;
993 struct flow_dissector_mpls_lse *lse_val;
994
995 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
996 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
997 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
998 tb[TCA_FLOWER_KEY_MPLS_TC] ||
999 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1000 NL_SET_ERR_MSG_ATTR(extack,
1001 tb[TCA_FLOWER_KEY_MPLS_OPTS],
1002 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
1003 return -EBADMSG;
1004 }
1005
1006 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
1007 key_val, key_mask, extack);
1008 }
1009
1010 lse_val = &key_val->ls[0];
1011 lse_mask = &key_mask->ls[0];
1012
1013 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
1014 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
1015 lse_mask->mpls_ttl = MPLS_TTL_MASK;
1016 dissector_set_mpls_lse(key_val, 0);
1017 dissector_set_mpls_lse(key_mask, 0);
1018 }
1019 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1020 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
1021
1022 if (bos & ~MPLS_BOS_MASK) {
1023 NL_SET_ERR_MSG_ATTR(extack,
1024 tb[TCA_FLOWER_KEY_MPLS_BOS],
1025 "Bottom Of Stack (BOS) must be 0 or 1");
1026 return -EINVAL;
1027 }
1028 lse_val->mpls_bos = bos;
1029 lse_mask->mpls_bos = MPLS_BOS_MASK;
1030 dissector_set_mpls_lse(key_val, 0);
1031 dissector_set_mpls_lse(key_mask, 0);
1032 }
1033 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1034 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
1035
1036 if (tc & ~MPLS_TC_MASK) {
1037 NL_SET_ERR_MSG_ATTR(extack,
1038 tb[TCA_FLOWER_KEY_MPLS_TC],
1039 "Traffic Class (TC) must be between 0 and 7");
1040 return -EINVAL;
1041 }
1042 lse_val->mpls_tc = tc;
1043 lse_mask->mpls_tc = MPLS_TC_MASK;
1044 dissector_set_mpls_lse(key_val, 0);
1045 dissector_set_mpls_lse(key_mask, 0);
1046 }
1047 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1048 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
1049
1050 if (label & ~MPLS_LABEL_MASK) {
1051 NL_SET_ERR_MSG_ATTR(extack,
1052 tb[TCA_FLOWER_KEY_MPLS_LABEL],
1053 "Label must be between 0 and 1048575");
1054 return -EINVAL;
1055 }
1056 lse_val->mpls_label = label;
1057 lse_mask->mpls_label = MPLS_LABEL_MASK;
1058 dissector_set_mpls_lse(key_val, 0);
1059 dissector_set_mpls_lse(key_mask, 0);
1060 }
1061 return 0;
1062}
1063
1064static void fl_set_key_vlan(struct nlattr **tb,
1065 __be16 ethertype,
1066 int vlan_id_key, int vlan_prio_key,
1067 int vlan_next_eth_type_key,
1068 struct flow_dissector_key_vlan *key_val,
1069 struct flow_dissector_key_vlan *key_mask)
1070{
1071#define VLAN_PRIORITY_MASK 0x7
1072
1073 if (tb[vlan_id_key]) {
1074 key_val->vlan_id =
1075 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
1076 key_mask->vlan_id = VLAN_VID_MASK;
1077 }
1078 if (tb[vlan_prio_key]) {
1079 key_val->vlan_priority =
1080 nla_get_u8(tb[vlan_prio_key]) &
1081 VLAN_PRIORITY_MASK;
1082 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1083 }
1084 if (ethertype) {
1085 key_val->vlan_tpid = ethertype;
1086 key_mask->vlan_tpid = cpu_to_be16(~0);
1087 }
1088 if (tb[vlan_next_eth_type_key]) {
1089 key_val->vlan_eth_type =
1090 nla_get_be16(tb[vlan_next_eth_type_key]);
1091 key_mask->vlan_eth_type = cpu_to_be16(~0);
1092 }
1093}
1094
1095static void fl_set_key_pppoe(struct nlattr **tb,
1096 struct flow_dissector_key_pppoe *key_val,
1097 struct flow_dissector_key_pppoe *key_mask,
1098 struct fl_flow_key *key,
1099 struct fl_flow_key *mask)
1100{
1101 /* key_val::type must be set to ETH_P_PPP_SES
1102 * because ETH_P_PPP_SES was stored in basic.n_proto
1103 * which might get overwritten by ppp_proto
1104 * or might be set to 0, the role of key_val::type
1105 * is similar to vlan_key::tpid
1106 */
1107 key_val->type = htons(ETH_P_PPP_SES);
1108 key_mask->type = cpu_to_be16(~0);
1109
1110 if (tb[TCA_FLOWER_KEY_PPPOE_SID]) {
1111 key_val->session_id =
1112 nla_get_be16(tb[TCA_FLOWER_KEY_PPPOE_SID]);
1113 key_mask->session_id = cpu_to_be16(~0);
1114 }
1115 if (tb[TCA_FLOWER_KEY_PPP_PROTO]) {
1116 key_val->ppp_proto =
1117 nla_get_be16(tb[TCA_FLOWER_KEY_PPP_PROTO]);
1118 key_mask->ppp_proto = cpu_to_be16(~0);
1119
1120 if (key_val->ppp_proto == htons(PPP_IP)) {
1121 key->basic.n_proto = htons(ETH_P_IP);
1122 mask->basic.n_proto = cpu_to_be16(~0);
1123 } else if (key_val->ppp_proto == htons(PPP_IPV6)) {
1124 key->basic.n_proto = htons(ETH_P_IPV6);
1125 mask->basic.n_proto = cpu_to_be16(~0);
1126 } else if (key_val->ppp_proto == htons(PPP_MPLS_UC)) {
1127 key->basic.n_proto = htons(ETH_P_MPLS_UC);
1128 mask->basic.n_proto = cpu_to_be16(~0);
1129 } else if (key_val->ppp_proto == htons(PPP_MPLS_MC)) {
1130 key->basic.n_proto = htons(ETH_P_MPLS_MC);
1131 mask->basic.n_proto = cpu_to_be16(~0);
1132 }
1133 } else {
1134 key->basic.n_proto = 0;
1135 mask->basic.n_proto = cpu_to_be16(0);
1136 }
1137}
1138
1139static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1140 u32 *dissector_key, u32 *dissector_mask,
1141 u32 flower_flag_bit, u32 dissector_flag_bit)
1142{
1143 if (flower_mask & flower_flag_bit) {
1144 *dissector_mask |= dissector_flag_bit;
1145 if (flower_key & flower_flag_bit)
1146 *dissector_key |= dissector_flag_bit;
1147 }
1148}
1149
1150static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1151 u32 *flags_mask, struct netlink_ext_ack *extack)
1152{
1153 u32 key, mask;
1154
1155 /* mask is mandatory for flags */
1156 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1157 NL_SET_ERR_MSG(extack, "Missing flags mask");
1158 return -EINVAL;
1159 }
1160
1161 key = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS]));
1162 mask = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
1163
1164 *flags_key = 0;
1165 *flags_mask = 0;
1166
1167 fl_set_key_flag(key, mask, flags_key, flags_mask,
1168 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1169 fl_set_key_flag(key, mask, flags_key, flags_mask,
1170 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1171 FLOW_DIS_FIRST_FRAG);
1172
1173 return 0;
1174}
1175
1176static void fl_set_key_ip(struct nlattr **tb, bool encap,
1177 struct flow_dissector_key_ip *key,
1178 struct flow_dissector_key_ip *mask)
1179{
1180 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1181 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1182 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1183 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1184
1185 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1186 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
1187}
1188
1189static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1190 int depth, int option_len,
1191 struct netlink_ext_ack *extack)
1192{
1193 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1194 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1195 struct geneve_opt *opt;
1196 int err, data_len = 0;
1197
1198 if (option_len > sizeof(struct geneve_opt))
1199 data_len = option_len - sizeof(struct geneve_opt);
1200
1201 if (key->enc_opts.len > FLOW_DIS_TUN_OPTS_MAX - 4)
1202 return -ERANGE;
1203
1204 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1205 memset(opt, 0xff, option_len);
1206 opt->length = data_len / 4;
1207 opt->r1 = 0;
1208 opt->r2 = 0;
1209 opt->r3 = 0;
1210
1211 /* If no mask has been prodived we assume an exact match. */
1212 if (!depth)
1213 return sizeof(struct geneve_opt) + data_len;
1214
1215 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1216 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1217 return -EINVAL;
1218 }
1219
1220 err = nla_parse_nested_deprecated(tb,
1221 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1222 nla, geneve_opt_policy, extack);
1223 if (err < 0)
1224 return err;
1225
1226 /* We are not allowed to omit any of CLASS, TYPE or DATA
1227 * fields from the key.
1228 */
1229 if (!option_len &&
1230 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1231 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1232 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1233 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1234 return -EINVAL;
1235 }
1236
1237 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1238 * for the mask.
1239 */
1240 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1241 int new_len = key->enc_opts.len;
1242
1243 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1244 data_len = nla_len(data);
1245 if (data_len < 4) {
1246 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1247 return -ERANGE;
1248 }
1249 if (data_len % 4) {
1250 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1251 return -ERANGE;
1252 }
1253
1254 new_len += sizeof(struct geneve_opt) + data_len;
1255 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1256 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1257 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1258 return -ERANGE;
1259 }
1260 opt->length = data_len / 4;
1261 memcpy(opt->opt_data, nla_data(data), data_len);
1262 }
1263
1264 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1265 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1266 opt->opt_class = nla_get_be16(class);
1267 }
1268
1269 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1270 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1271 opt->type = nla_get_u8(type);
1272 }
1273
1274 return sizeof(struct geneve_opt) + data_len;
1275}
1276
1277static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1278 int depth, int option_len,
1279 struct netlink_ext_ack *extack)
1280{
1281 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1282 struct vxlan_metadata *md;
1283 int err;
1284
1285 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1286 memset(md, 0xff, sizeof(*md));
1287
1288 if (!depth)
1289 return sizeof(*md);
1290
1291 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1292 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1293 return -EINVAL;
1294 }
1295
1296 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1297 vxlan_opt_policy, extack);
1298 if (err < 0)
1299 return err;
1300
1301 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1302 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1303 return -EINVAL;
1304 }
1305
1306 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1307 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
1308 md->gbp &= VXLAN_GBP_MASK;
1309 }
1310
1311 return sizeof(*md);
1312}
1313
1314static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1315 int depth, int option_len,
1316 struct netlink_ext_ack *extack)
1317{
1318 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1319 struct erspan_metadata *md;
1320 int err;
1321
1322 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1323 memset(md, 0xff, sizeof(*md));
1324 md->version = 1;
1325
1326 if (!depth)
1327 return sizeof(*md);
1328
1329 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1330 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1331 return -EINVAL;
1332 }
1333
1334 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1335 erspan_opt_policy, extack);
1336 if (err < 0)
1337 return err;
1338
1339 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1340 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1341 return -EINVAL;
1342 }
1343
1344 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1345 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1346
1347 if (md->version == 1) {
1348 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1349 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1350 return -EINVAL;
1351 }
1352 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1353 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1354 memset(&md->u, 0x00, sizeof(md->u));
1355 md->u.index = nla_get_be32(nla);
1356 }
1357 } else if (md->version == 2) {
1358 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1359 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1360 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1361 return -EINVAL;
1362 }
1363 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1364 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1365 md->u.md2.dir = nla_get_u8(nla);
1366 }
1367 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1368 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1369 set_hwid(&md->u.md2, nla_get_u8(nla));
1370 }
1371 } else {
1372 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1373 return -EINVAL;
1374 }
1375
1376 return sizeof(*md);
1377}
1378
1379static int fl_set_gtp_opt(const struct nlattr *nla, struct fl_flow_key *key,
1380 int depth, int option_len,
1381 struct netlink_ext_ack *extack)
1382{
1383 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1];
1384 struct gtp_pdu_session_info *sinfo;
1385 u8 len = key->enc_opts.len;
1386 int err;
1387
1388 sinfo = (struct gtp_pdu_session_info *)&key->enc_opts.data[len];
1389 memset(sinfo, 0xff, option_len);
1390
1391 if (!depth)
1392 return sizeof(*sinfo);
1393
1394 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GTP) {
1395 NL_SET_ERR_MSG_MOD(extack, "Non-gtp option type for mask");
1396 return -EINVAL;
1397 }
1398
1399 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GTP_MAX, nla,
1400 gtp_opt_policy, extack);
1401 if (err < 0)
1402 return err;
1403
1404 if (!option_len &&
1405 (!tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] ||
1406 !tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])) {
1407 NL_SET_ERR_MSG_MOD(extack,
1408 "Missing tunnel key gtp option pdu type or qfi");
1409 return -EINVAL;
1410 }
1411
1412 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE])
1413 sinfo->pdu_type =
1414 nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE]);
1415
1416 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])
1417 sinfo->qfi = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI]);
1418
1419 return sizeof(*sinfo);
1420}
1421
1422static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1423 struct fl_flow_key *mask,
1424 struct netlink_ext_ack *extack)
1425{
1426 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1427 int err, option_len, key_depth, msk_depth = 0;
1428
1429 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1430 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1431 enc_opts_policy, extack);
1432 if (err)
1433 return err;
1434
1435 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1436
1437 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1438 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1439 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1440 enc_opts_policy, extack);
1441 if (err)
1442 return err;
1443
1444 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1445 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1446 if (!nla_ok(nla_opt_msk, msk_depth)) {
1447 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1448 return -EINVAL;
1449 }
1450 }
1451
1452 nla_for_each_attr(nla_opt_key, nla_enc_key,
1453 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1454 switch (nla_type(nla_opt_key)) {
1455 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1456 if (key->enc_opts.dst_opt_type &&
1457 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1458 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1459 return -EINVAL;
1460 }
1461 option_len = 0;
1462 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1463 option_len = fl_set_geneve_opt(nla_opt_key, key,
1464 key_depth, option_len,
1465 extack);
1466 if (option_len < 0)
1467 return option_len;
1468
1469 key->enc_opts.len += option_len;
1470 /* At the same time we need to parse through the mask
1471 * in order to verify exact and mask attribute lengths.
1472 */
1473 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1474 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1475 msk_depth, option_len,
1476 extack);
1477 if (option_len < 0)
1478 return option_len;
1479
1480 mask->enc_opts.len += option_len;
1481 if (key->enc_opts.len != mask->enc_opts.len) {
1482 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1483 return -EINVAL;
1484 }
1485 break;
1486 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1487 if (key->enc_opts.dst_opt_type) {
1488 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1489 return -EINVAL;
1490 }
1491 option_len = 0;
1492 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1493 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1494 key_depth, option_len,
1495 extack);
1496 if (option_len < 0)
1497 return option_len;
1498
1499 key->enc_opts.len += option_len;
1500 /* At the same time we need to parse through the mask
1501 * in order to verify exact and mask attribute lengths.
1502 */
1503 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1504 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1505 msk_depth, option_len,
1506 extack);
1507 if (option_len < 0)
1508 return option_len;
1509
1510 mask->enc_opts.len += option_len;
1511 if (key->enc_opts.len != mask->enc_opts.len) {
1512 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1513 return -EINVAL;
1514 }
1515 break;
1516 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1517 if (key->enc_opts.dst_opt_type) {
1518 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1519 return -EINVAL;
1520 }
1521 option_len = 0;
1522 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1523 option_len = fl_set_erspan_opt(nla_opt_key, key,
1524 key_depth, option_len,
1525 extack);
1526 if (option_len < 0)
1527 return option_len;
1528
1529 key->enc_opts.len += option_len;
1530 /* At the same time we need to parse through the mask
1531 * in order to verify exact and mask attribute lengths.
1532 */
1533 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1534 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1535 msk_depth, option_len,
1536 extack);
1537 if (option_len < 0)
1538 return option_len;
1539
1540 mask->enc_opts.len += option_len;
1541 if (key->enc_opts.len != mask->enc_opts.len) {
1542 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1543 return -EINVAL;
1544 }
1545 break;
1546 case TCA_FLOWER_KEY_ENC_OPTS_GTP:
1547 if (key->enc_opts.dst_opt_type) {
1548 NL_SET_ERR_MSG_MOD(extack,
1549 "Duplicate type for gtp options");
1550 return -EINVAL;
1551 }
1552 option_len = 0;
1553 key->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1554 option_len = fl_set_gtp_opt(nla_opt_key, key,
1555 key_depth, option_len,
1556 extack);
1557 if (option_len < 0)
1558 return option_len;
1559
1560 key->enc_opts.len += option_len;
1561 /* At the same time we need to parse through the mask
1562 * in order to verify exact and mask attribute lengths.
1563 */
1564 mask->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1565 option_len = fl_set_gtp_opt(nla_opt_msk, mask,
1566 msk_depth, option_len,
1567 extack);
1568 if (option_len < 0)
1569 return option_len;
1570
1571 mask->enc_opts.len += option_len;
1572 if (key->enc_opts.len != mask->enc_opts.len) {
1573 NL_SET_ERR_MSG_MOD(extack,
1574 "Key and mask miss aligned");
1575 return -EINVAL;
1576 }
1577 break;
1578 default:
1579 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1580 return -EINVAL;
1581 }
1582
1583 if (!msk_depth)
1584 continue;
1585
1586 if (!nla_ok(nla_opt_msk, msk_depth)) {
1587 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1588 return -EINVAL;
1589 }
1590 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1591 }
1592
1593 return 0;
1594}
1595
1596static int fl_validate_ct_state(u16 state, struct nlattr *tb,
1597 struct netlink_ext_ack *extack)
1598{
1599 if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
1600 NL_SET_ERR_MSG_ATTR(extack, tb,
1601 "no trk, so no other flag can be set");
1602 return -EINVAL;
1603 }
1604
1605 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1606 state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
1607 NL_SET_ERR_MSG_ATTR(extack, tb,
1608 "new and est are mutually exclusive");
1609 return -EINVAL;
1610 }
1611
1612 if (state & TCA_FLOWER_KEY_CT_FLAGS_INVALID &&
1613 state & ~(TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
1614 TCA_FLOWER_KEY_CT_FLAGS_INVALID)) {
1615 NL_SET_ERR_MSG_ATTR(extack, tb,
1616 "when inv is set, only trk may be set");
1617 return -EINVAL;
1618 }
1619
1620 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1621 state & TCA_FLOWER_KEY_CT_FLAGS_REPLY) {
1622 NL_SET_ERR_MSG_ATTR(extack, tb,
1623 "new and rpl are mutually exclusive");
1624 return -EINVAL;
1625 }
1626
1627 return 0;
1628}
1629
1630static int fl_set_key_ct(struct nlattr **tb,
1631 struct flow_dissector_key_ct *key,
1632 struct flow_dissector_key_ct *mask,
1633 struct netlink_ext_ack *extack)
1634{
1635 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1636 int err;
1637
1638 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1639 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1640 return -EOPNOTSUPP;
1641 }
1642 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1643 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1644 sizeof(key->ct_state));
1645
1646 err = fl_validate_ct_state(key->ct_state & mask->ct_state,
1647 tb[TCA_FLOWER_KEY_CT_STATE_MASK],
1648 extack);
1649 if (err)
1650 return err;
1651
1652 }
1653 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1654 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1655 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1656 return -EOPNOTSUPP;
1657 }
1658 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1659 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1660 sizeof(key->ct_zone));
1661 }
1662 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1663 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1664 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1665 return -EOPNOTSUPP;
1666 }
1667 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1668 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1669 sizeof(key->ct_mark));
1670 }
1671 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1672 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1673 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1674 return -EOPNOTSUPP;
1675 }
1676 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1677 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1678 sizeof(key->ct_labels));
1679 }
1680
1681 return 0;
1682}
1683
1684static bool is_vlan_key(struct nlattr *tb, __be16 *ethertype,
1685 struct fl_flow_key *key, struct fl_flow_key *mask,
1686 int vthresh)
1687{
1688 const bool good_num_of_vlans = key->num_of_vlans.num_of_vlans > vthresh;
1689
1690 if (!tb) {
1691 *ethertype = 0;
1692 return good_num_of_vlans;
1693 }
1694
1695 *ethertype = nla_get_be16(tb);
1696 if (good_num_of_vlans || eth_type_vlan(*ethertype))
1697 return true;
1698
1699 key->basic.n_proto = *ethertype;
1700 mask->basic.n_proto = cpu_to_be16(~0);
1701 return false;
1702}
1703
1704static void fl_set_key_cfm_md_level(struct nlattr **tb,
1705 struct fl_flow_key *key,
1706 struct fl_flow_key *mask,
1707 struct netlink_ext_ack *extack)
1708{
1709 u8 level;
1710
1711 if (!tb[TCA_FLOWER_KEY_CFM_MD_LEVEL])
1712 return;
1713
1714 level = nla_get_u8(tb[TCA_FLOWER_KEY_CFM_MD_LEVEL]);
1715 key->cfm.mdl_ver = FIELD_PREP(FLOW_DIS_CFM_MDL_MASK, level);
1716 mask->cfm.mdl_ver = FLOW_DIS_CFM_MDL_MASK;
1717}
1718
1719static void fl_set_key_cfm_opcode(struct nlattr **tb,
1720 struct fl_flow_key *key,
1721 struct fl_flow_key *mask,
1722 struct netlink_ext_ack *extack)
1723{
1724 fl_set_key_val(tb, &key->cfm.opcode, TCA_FLOWER_KEY_CFM_OPCODE,
1725 &mask->cfm.opcode, TCA_FLOWER_UNSPEC,
1726 sizeof(key->cfm.opcode));
1727}
1728
1729static int fl_set_key_cfm(struct nlattr **tb,
1730 struct fl_flow_key *key,
1731 struct fl_flow_key *mask,
1732 struct netlink_ext_ack *extack)
1733{
1734 struct nlattr *nla_cfm_opt[TCA_FLOWER_KEY_CFM_OPT_MAX + 1];
1735 int err;
1736
1737 if (!tb[TCA_FLOWER_KEY_CFM])
1738 return 0;
1739
1740 err = nla_parse_nested(nla_cfm_opt, TCA_FLOWER_KEY_CFM_OPT_MAX,
1741 tb[TCA_FLOWER_KEY_CFM], cfm_opt_policy, extack);
1742 if (err < 0)
1743 return err;
1744
1745 fl_set_key_cfm_opcode(nla_cfm_opt, key, mask, extack);
1746 fl_set_key_cfm_md_level(nla_cfm_opt, key, mask, extack);
1747
1748 return 0;
1749}
1750
1751static int fl_set_key(struct net *net, struct nlattr **tb,
1752 struct fl_flow_key *key, struct fl_flow_key *mask,
1753 struct netlink_ext_ack *extack)
1754{
1755 __be16 ethertype;
1756 int ret = 0;
1757
1758 if (tb[TCA_FLOWER_INDEV]) {
1759 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1760 if (err < 0)
1761 return err;
1762 key->meta.ingress_ifindex = err;
1763 mask->meta.ingress_ifindex = 0xffffffff;
1764 }
1765
1766 fl_set_key_val(tb, &key->meta.l2_miss, TCA_FLOWER_L2_MISS,
1767 &mask->meta.l2_miss, TCA_FLOWER_UNSPEC,
1768 sizeof(key->meta.l2_miss));
1769
1770 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1771 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1772 sizeof(key->eth.dst));
1773 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1774 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1775 sizeof(key->eth.src));
1776 fl_set_key_val(tb, &key->num_of_vlans,
1777 TCA_FLOWER_KEY_NUM_OF_VLANS,
1778 &mask->num_of_vlans,
1779 TCA_FLOWER_UNSPEC,
1780 sizeof(key->num_of_vlans));
1781
1782 if (is_vlan_key(tb[TCA_FLOWER_KEY_ETH_TYPE], ðertype, key, mask, 0)) {
1783 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1784 TCA_FLOWER_KEY_VLAN_PRIO,
1785 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1786 &key->vlan, &mask->vlan);
1787
1788 if (is_vlan_key(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE],
1789 ðertype, key, mask, 1)) {
1790 fl_set_key_vlan(tb, ethertype,
1791 TCA_FLOWER_KEY_CVLAN_ID,
1792 TCA_FLOWER_KEY_CVLAN_PRIO,
1793 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1794 &key->cvlan, &mask->cvlan);
1795 fl_set_key_val(tb, &key->basic.n_proto,
1796 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1797 &mask->basic.n_proto,
1798 TCA_FLOWER_UNSPEC,
1799 sizeof(key->basic.n_proto));
1800 }
1801 }
1802
1803 if (key->basic.n_proto == htons(ETH_P_PPP_SES))
1804 fl_set_key_pppoe(tb, &key->pppoe, &mask->pppoe, key, mask);
1805
1806 if (key->basic.n_proto == htons(ETH_P_IP) ||
1807 key->basic.n_proto == htons(ETH_P_IPV6)) {
1808 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1809 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1810 sizeof(key->basic.ip_proto));
1811 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1812 }
1813
1814 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1815 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1816 mask->control.addr_type = ~0;
1817 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1818 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1819 sizeof(key->ipv4.src));
1820 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1821 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1822 sizeof(key->ipv4.dst));
1823 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1824 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1825 mask->control.addr_type = ~0;
1826 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1827 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1828 sizeof(key->ipv6.src));
1829 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1830 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1831 sizeof(key->ipv6.dst));
1832 }
1833
1834 if (key->basic.ip_proto == IPPROTO_TCP) {
1835 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1836 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1837 sizeof(key->tp.src));
1838 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1839 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1840 sizeof(key->tp.dst));
1841 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1842 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1843 sizeof(key->tcp.flags));
1844 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1845 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1846 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1847 sizeof(key->tp.src));
1848 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1849 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1850 sizeof(key->tp.dst));
1851 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1852 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1853 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1854 sizeof(key->tp.src));
1855 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1856 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1857 sizeof(key->tp.dst));
1858 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1859 key->basic.ip_proto == IPPROTO_ICMP) {
1860 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1861 &mask->icmp.type,
1862 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1863 sizeof(key->icmp.type));
1864 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1865 &mask->icmp.code,
1866 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1867 sizeof(key->icmp.code));
1868 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1869 key->basic.ip_proto == IPPROTO_ICMPV6) {
1870 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1871 &mask->icmp.type,
1872 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1873 sizeof(key->icmp.type));
1874 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1875 &mask->icmp.code,
1876 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1877 sizeof(key->icmp.code));
1878 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1879 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1880 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1881 if (ret)
1882 return ret;
1883 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1884 key->basic.n_proto == htons(ETH_P_RARP)) {
1885 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1886 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1887 sizeof(key->arp.sip));
1888 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1889 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1890 sizeof(key->arp.tip));
1891 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1892 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1893 sizeof(key->arp.op));
1894 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1895 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1896 sizeof(key->arp.sha));
1897 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1898 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1899 sizeof(key->arp.tha));
1900 } else if (key->basic.ip_proto == IPPROTO_L2TP) {
1901 fl_set_key_val(tb, &key->l2tpv3.session_id,
1902 TCA_FLOWER_KEY_L2TPV3_SID,
1903 &mask->l2tpv3.session_id, TCA_FLOWER_UNSPEC,
1904 sizeof(key->l2tpv3.session_id));
1905 } else if (key->basic.n_proto == htons(ETH_P_CFM)) {
1906 ret = fl_set_key_cfm(tb, key, mask, extack);
1907 if (ret)
1908 return ret;
1909 }
1910
1911 if (key->basic.ip_proto == IPPROTO_TCP ||
1912 key->basic.ip_proto == IPPROTO_UDP ||
1913 key->basic.ip_proto == IPPROTO_SCTP) {
1914 ret = fl_set_key_port_range(tb, key, mask, extack);
1915 if (ret)
1916 return ret;
1917 }
1918
1919 if (tb[TCA_FLOWER_KEY_SPI]) {
1920 ret = fl_set_key_spi(tb, key, mask, extack);
1921 if (ret)
1922 return ret;
1923 }
1924
1925 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1926 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1927 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1928 mask->enc_control.addr_type = ~0;
1929 fl_set_key_val(tb, &key->enc_ipv4.src,
1930 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1931 &mask->enc_ipv4.src,
1932 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1933 sizeof(key->enc_ipv4.src));
1934 fl_set_key_val(tb, &key->enc_ipv4.dst,
1935 TCA_FLOWER_KEY_ENC_IPV4_DST,
1936 &mask->enc_ipv4.dst,
1937 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1938 sizeof(key->enc_ipv4.dst));
1939 }
1940
1941 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1942 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1943 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1944 mask->enc_control.addr_type = ~0;
1945 fl_set_key_val(tb, &key->enc_ipv6.src,
1946 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1947 &mask->enc_ipv6.src,
1948 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1949 sizeof(key->enc_ipv6.src));
1950 fl_set_key_val(tb, &key->enc_ipv6.dst,
1951 TCA_FLOWER_KEY_ENC_IPV6_DST,
1952 &mask->enc_ipv6.dst,
1953 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1954 sizeof(key->enc_ipv6.dst));
1955 }
1956
1957 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1958 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1959 sizeof(key->enc_key_id.keyid));
1960
1961 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1962 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1963 sizeof(key->enc_tp.src));
1964
1965 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1966 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1967 sizeof(key->enc_tp.dst));
1968
1969 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1970
1971 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1972 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1973 sizeof(key->hash.hash));
1974
1975 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1976 ret = fl_set_enc_opt(tb, key, mask, extack);
1977 if (ret)
1978 return ret;
1979 }
1980
1981 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1982 if (ret)
1983 return ret;
1984
1985 if (tb[TCA_FLOWER_KEY_FLAGS])
1986 ret = fl_set_key_flags(tb, &key->control.flags,
1987 &mask->control.flags, extack);
1988
1989 return ret;
1990}
1991
1992static void fl_mask_copy(struct fl_flow_mask *dst,
1993 struct fl_flow_mask *src)
1994{
1995 const void *psrc = fl_key_get_start(&src->key, src);
1996 void *pdst = fl_key_get_start(&dst->key, src);
1997
1998 memcpy(pdst, psrc, fl_mask_range(src));
1999 dst->range = src->range;
2000}
2001
2002static const struct rhashtable_params fl_ht_params = {
2003 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
2004 .head_offset = offsetof(struct cls_fl_filter, ht_node),
2005 .automatic_shrinking = true,
2006};
2007
2008static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
2009{
2010 mask->filter_ht_params = fl_ht_params;
2011 mask->filter_ht_params.key_len = fl_mask_range(mask);
2012 mask->filter_ht_params.key_offset += mask->range.start;
2013
2014 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
2015}
2016
2017#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
2018#define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
2019
2020#define FL_KEY_IS_MASKED(mask, member) \
2021 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
2022 0, FL_KEY_MEMBER_SIZE(member)) \
2023
2024#define FL_KEY_SET(keys, cnt, id, member) \
2025 do { \
2026 keys[cnt].key_id = id; \
2027 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
2028 cnt++; \
2029 } while(0);
2030
2031#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
2032 do { \
2033 if (FL_KEY_IS_MASKED(mask, member)) \
2034 FL_KEY_SET(keys, cnt, id, member); \
2035 } while(0);
2036
2037static void fl_init_dissector(struct flow_dissector *dissector,
2038 struct fl_flow_key *mask)
2039{
2040 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
2041 size_t cnt = 0;
2042
2043 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2044 FLOW_DISSECTOR_KEY_META, meta);
2045 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
2046 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
2047 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2048 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
2049 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2050 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
2051 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2052 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
2053 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2054 FLOW_DISSECTOR_KEY_PORTS, tp);
2055 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2056 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
2057 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2058 FLOW_DISSECTOR_KEY_IP, ip);
2059 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2060 FLOW_DISSECTOR_KEY_TCP, tcp);
2061 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2062 FLOW_DISSECTOR_KEY_ICMP, icmp);
2063 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2064 FLOW_DISSECTOR_KEY_ARP, arp);
2065 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2066 FLOW_DISSECTOR_KEY_MPLS, mpls);
2067 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2068 FLOW_DISSECTOR_KEY_VLAN, vlan);
2069 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2070 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
2071 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2072 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
2073 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2074 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
2075 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2076 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
2077 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
2078 FL_KEY_IS_MASKED(mask, enc_ipv6))
2079 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
2080 enc_control);
2081 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2082 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
2083 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2084 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
2085 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2086 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
2087 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2088 FLOW_DISSECTOR_KEY_CT, ct);
2089 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2090 FLOW_DISSECTOR_KEY_HASH, hash);
2091 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2092 FLOW_DISSECTOR_KEY_NUM_OF_VLANS, num_of_vlans);
2093 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2094 FLOW_DISSECTOR_KEY_PPPOE, pppoe);
2095 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2096 FLOW_DISSECTOR_KEY_L2TPV3, l2tpv3);
2097 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2098 FLOW_DISSECTOR_KEY_IPSEC, ipsec);
2099 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
2100 FLOW_DISSECTOR_KEY_CFM, cfm);
2101
2102 skb_flow_dissector_init(dissector, keys, cnt);
2103}
2104
2105static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
2106 struct fl_flow_mask *mask)
2107{
2108 struct fl_flow_mask *newmask;
2109 int err;
2110
2111 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
2112 if (!newmask)
2113 return ERR_PTR(-ENOMEM);
2114
2115 fl_mask_copy(newmask, mask);
2116
2117 if ((newmask->key.tp_range.tp_min.dst &&
2118 newmask->key.tp_range.tp_max.dst) ||
2119 (newmask->key.tp_range.tp_min.src &&
2120 newmask->key.tp_range.tp_max.src))
2121 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
2122
2123 err = fl_init_mask_hashtable(newmask);
2124 if (err)
2125 goto errout_free;
2126
2127 fl_init_dissector(&newmask->dissector, &newmask->key);
2128
2129 INIT_LIST_HEAD_RCU(&newmask->filters);
2130
2131 refcount_set(&newmask->refcnt, 1);
2132 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
2133 &newmask->ht_node, mask_ht_params);
2134 if (err)
2135 goto errout_destroy;
2136
2137 spin_lock(&head->masks_lock);
2138 list_add_tail_rcu(&newmask->list, &head->masks);
2139 spin_unlock(&head->masks_lock);
2140
2141 return newmask;
2142
2143errout_destroy:
2144 rhashtable_destroy(&newmask->ht);
2145errout_free:
2146 kfree(newmask);
2147
2148 return ERR_PTR(err);
2149}
2150
2151static int fl_check_assign_mask(struct cls_fl_head *head,
2152 struct cls_fl_filter *fnew,
2153 struct cls_fl_filter *fold,
2154 struct fl_flow_mask *mask)
2155{
2156 struct fl_flow_mask *newmask;
2157 int ret = 0;
2158
2159 rcu_read_lock();
2160
2161 /* Insert mask as temporary node to prevent concurrent creation of mask
2162 * with same key. Any concurrent lookups with same key will return
2163 * -EAGAIN because mask's refcnt is zero.
2164 */
2165 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
2166 &mask->ht_node,
2167 mask_ht_params);
2168 if (!fnew->mask) {
2169 rcu_read_unlock();
2170
2171 if (fold) {
2172 ret = -EINVAL;
2173 goto errout_cleanup;
2174 }
2175
2176 newmask = fl_create_new_mask(head, mask);
2177 if (IS_ERR(newmask)) {
2178 ret = PTR_ERR(newmask);
2179 goto errout_cleanup;
2180 }
2181
2182 fnew->mask = newmask;
2183 return 0;
2184 } else if (IS_ERR(fnew->mask)) {
2185 ret = PTR_ERR(fnew->mask);
2186 } else if (fold && fold->mask != fnew->mask) {
2187 ret = -EINVAL;
2188 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
2189 /* Mask was deleted concurrently, try again */
2190 ret = -EAGAIN;
2191 }
2192 rcu_read_unlock();
2193 return ret;
2194
2195errout_cleanup:
2196 rhashtable_remove_fast(&head->ht, &mask->ht_node,
2197 mask_ht_params);
2198 return ret;
2199}
2200
2201static bool fl_needs_tc_skb_ext(const struct fl_flow_key *mask)
2202{
2203 return mask->meta.l2_miss;
2204}
2205
2206static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
2207 struct cls_fl_filter *fold,
2208 bool *in_ht)
2209{
2210 struct fl_flow_mask *mask = fnew->mask;
2211 int err;
2212
2213 err = rhashtable_lookup_insert_fast(&mask->ht,
2214 &fnew->ht_node,
2215 mask->filter_ht_params);
2216 if (err) {
2217 *in_ht = false;
2218 /* It is okay if filter with same key exists when
2219 * overwriting.
2220 */
2221 return fold && err == -EEXIST ? 0 : err;
2222 }
2223
2224 *in_ht = true;
2225 return 0;
2226}
2227
2228static int fl_change(struct net *net, struct sk_buff *in_skb,
2229 struct tcf_proto *tp, unsigned long base,
2230 u32 handle, struct nlattr **tca,
2231 void **arg, u32 flags,
2232 struct netlink_ext_ack *extack)
2233{
2234 struct cls_fl_head *head = fl_head_dereference(tp);
2235 bool rtnl_held = !(flags & TCA_ACT_FLAGS_NO_RTNL);
2236 struct cls_fl_filter *fold = *arg;
2237 bool bound_to_filter = false;
2238 struct cls_fl_filter *fnew;
2239 struct fl_flow_mask *mask;
2240 struct nlattr **tb;
2241 bool in_ht;
2242 int err;
2243
2244 if (!tca[TCA_OPTIONS]) {
2245 err = -EINVAL;
2246 goto errout_fold;
2247 }
2248
2249 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
2250 if (!mask) {
2251 err = -ENOBUFS;
2252 goto errout_fold;
2253 }
2254
2255 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2256 if (!tb) {
2257 err = -ENOBUFS;
2258 goto errout_mask_alloc;
2259 }
2260
2261 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2262 tca[TCA_OPTIONS], fl_policy, NULL);
2263 if (err < 0)
2264 goto errout_tb;
2265
2266 if (fold && handle && fold->handle != handle) {
2267 err = -EINVAL;
2268 goto errout_tb;
2269 }
2270
2271 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
2272 if (!fnew) {
2273 err = -ENOBUFS;
2274 goto errout_tb;
2275 }
2276 INIT_LIST_HEAD(&fnew->hw_list);
2277 refcount_set(&fnew->refcnt, 1);
2278
2279 if (tb[TCA_FLOWER_FLAGS]) {
2280 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
2281
2282 if (!tc_flags_valid(fnew->flags)) {
2283 kfree(fnew);
2284 err = -EINVAL;
2285 goto errout_tb;
2286 }
2287 }
2288
2289 if (!fold) {
2290 spin_lock(&tp->lock);
2291 if (!handle) {
2292 handle = 1;
2293 err = idr_alloc_u32(&head->handle_idr, NULL, &handle,
2294 INT_MAX, GFP_ATOMIC);
2295 } else {
2296 err = idr_alloc_u32(&head->handle_idr, NULL, &handle,
2297 handle, GFP_ATOMIC);
2298
2299 /* Filter with specified handle was concurrently
2300 * inserted after initial check in cls_api. This is not
2301 * necessarily an error if NLM_F_EXCL is not set in
2302 * message flags. Returning EAGAIN will cause cls_api to
2303 * try to update concurrently inserted rule.
2304 */
2305 if (err == -ENOSPC)
2306 err = -EAGAIN;
2307 }
2308 spin_unlock(&tp->lock);
2309
2310 if (err) {
2311 kfree(fnew);
2312 goto errout_tb;
2313 }
2314 }
2315 fnew->handle = handle;
2316
2317 err = tcf_exts_init_ex(&fnew->exts, net, TCA_FLOWER_ACT, 0, tp, handle,
2318 !tc_skip_hw(fnew->flags));
2319 if (err < 0)
2320 goto errout_idr;
2321
2322 err = tcf_exts_validate_ex(net, tp, tb, tca[TCA_RATE],
2323 &fnew->exts, flags, fnew->flags,
2324 extack);
2325 if (err < 0)
2326 goto errout_idr;
2327
2328 if (tb[TCA_FLOWER_CLASSID]) {
2329 fnew->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
2330 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2331 rtnl_lock();
2332 tcf_bind_filter(tp, &fnew->res, base);
2333 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2334 rtnl_unlock();
2335 bound_to_filter = true;
2336 }
2337
2338 err = fl_set_key(net, tb, &fnew->key, &mask->key, extack);
2339 if (err)
2340 goto unbind_filter;
2341
2342 fl_mask_update_range(mask);
2343 fl_set_masked_key(&fnew->mkey, &fnew->key, mask);
2344
2345 if (!fl_mask_fits_tmplt(tp->chain->tmplt_priv, mask)) {
2346 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
2347 err = -EINVAL;
2348 goto unbind_filter;
2349 }
2350
2351 /* Enable tc skb extension if filter matches on data extracted from
2352 * this extension.
2353 */
2354 if (fl_needs_tc_skb_ext(&mask->key)) {
2355 fnew->needs_tc_skb_ext = 1;
2356 tc_skb_ext_tc_enable();
2357 }
2358
2359 err = fl_check_assign_mask(head, fnew, fold, mask);
2360 if (err)
2361 goto unbind_filter;
2362
2363 err = fl_ht_insert_unique(fnew, fold, &in_ht);
2364 if (err)
2365 goto errout_mask;
2366
2367 if (!tc_skip_hw(fnew->flags)) {
2368 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
2369 if (err)
2370 goto errout_ht;
2371 }
2372
2373 if (!tc_in_hw(fnew->flags))
2374 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2375
2376 spin_lock(&tp->lock);
2377
2378 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2379 * proto again or create new one, if necessary.
2380 */
2381 if (tp->deleting) {
2382 err = -EAGAIN;
2383 goto errout_hw;
2384 }
2385
2386 if (fold) {
2387 /* Fold filter was deleted concurrently. Retry lookup. */
2388 if (fold->deleted) {
2389 err = -EAGAIN;
2390 goto errout_hw;
2391 }
2392
2393 fnew->handle = handle;
2394
2395 if (!in_ht) {
2396 struct rhashtable_params params =
2397 fnew->mask->filter_ht_params;
2398
2399 err = rhashtable_insert_fast(&fnew->mask->ht,
2400 &fnew->ht_node,
2401 params);
2402 if (err)
2403 goto errout_hw;
2404 in_ht = true;
2405 }
2406
2407 refcount_inc(&fnew->refcnt);
2408 rhashtable_remove_fast(&fold->mask->ht,
2409 &fold->ht_node,
2410 fold->mask->filter_ht_params);
2411 idr_replace(&head->handle_idr, fnew, fnew->handle);
2412 list_replace_rcu(&fold->list, &fnew->list);
2413 fold->deleted = true;
2414
2415 spin_unlock(&tp->lock);
2416
2417 fl_mask_put(head, fold->mask);
2418 if (!tc_skip_hw(fold->flags))
2419 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
2420 tcf_unbind_filter(tp, &fold->res);
2421 /* Caller holds reference to fold, so refcnt is always > 0
2422 * after this.
2423 */
2424 refcount_dec(&fold->refcnt);
2425 __fl_put(fold);
2426 } else {
2427 idr_replace(&head->handle_idr, fnew, fnew->handle);
2428
2429 refcount_inc(&fnew->refcnt);
2430 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
2431 spin_unlock(&tp->lock);
2432 }
2433
2434 *arg = fnew;
2435
2436 kfree(tb);
2437 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2438 return 0;
2439
2440errout_ht:
2441 spin_lock(&tp->lock);
2442errout_hw:
2443 fnew->deleted = true;
2444 spin_unlock(&tp->lock);
2445 if (!tc_skip_hw(fnew->flags))
2446 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
2447 if (in_ht)
2448 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2449 fnew->mask->filter_ht_params);
2450errout_mask:
2451 fl_mask_put(head, fnew->mask);
2452
2453unbind_filter:
2454 if (bound_to_filter) {
2455 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2456 rtnl_lock();
2457 tcf_unbind_filter(tp, &fnew->res);
2458 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2459 rtnl_unlock();
2460 }
2461
2462errout_idr:
2463 if (!fold) {
2464 spin_lock(&tp->lock);
2465 idr_remove(&head->handle_idr, fnew->handle);
2466 spin_unlock(&tp->lock);
2467 }
2468 __fl_put(fnew);
2469errout_tb:
2470 kfree(tb);
2471errout_mask_alloc:
2472 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2473errout_fold:
2474 if (fold)
2475 __fl_put(fold);
2476 return err;
2477}
2478
2479static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
2480 bool rtnl_held, struct netlink_ext_ack *extack)
2481{
2482 struct cls_fl_head *head = fl_head_dereference(tp);
2483 struct cls_fl_filter *f = arg;
2484 bool last_on_mask;
2485 int err = 0;
2486
2487 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
2488 *last = list_empty(&head->masks);
2489 __fl_put(f);
2490
2491 return err;
2492}
2493
2494static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2495 bool rtnl_held)
2496{
2497 struct cls_fl_head *head = fl_head_dereference(tp);
2498 unsigned long id = arg->cookie, tmp;
2499 struct cls_fl_filter *f;
2500
2501 arg->count = arg->skip;
2502
2503 rcu_read_lock();
2504 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2505 /* don't return filters that are being deleted */
2506 if (!f || !refcount_inc_not_zero(&f->refcnt))
2507 continue;
2508 rcu_read_unlock();
2509
2510 if (arg->fn(tp, f, arg) < 0) {
2511 __fl_put(f);
2512 arg->stop = 1;
2513 rcu_read_lock();
2514 break;
2515 }
2516 __fl_put(f);
2517 arg->count++;
2518 rcu_read_lock();
2519 }
2520 rcu_read_unlock();
2521 arg->cookie = id;
2522}
2523
2524static struct cls_fl_filter *
2525fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2526{
2527 struct cls_fl_head *head = fl_head_dereference(tp);
2528
2529 spin_lock(&tp->lock);
2530 if (list_empty(&head->hw_filters)) {
2531 spin_unlock(&tp->lock);
2532 return NULL;
2533 }
2534
2535 if (!f)
2536 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2537 hw_list);
2538 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2539 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2540 spin_unlock(&tp->lock);
2541 return f;
2542 }
2543 }
2544
2545 spin_unlock(&tp->lock);
2546 return NULL;
2547}
2548
2549static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
2550 void *cb_priv, struct netlink_ext_ack *extack)
2551{
2552 struct tcf_block *block = tp->chain->block;
2553 struct flow_cls_offload cls_flower = {};
2554 struct cls_fl_filter *f = NULL;
2555 int err;
2556
2557 /* hw_filters list can only be changed by hw offload functions after
2558 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2559 * iterating it.
2560 */
2561 ASSERT_RTNL();
2562
2563 while ((f = fl_get_next_hw_filter(tp, f, add))) {
2564 cls_flower.rule =
2565 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2566 if (!cls_flower.rule) {
2567 __fl_put(f);
2568 return -ENOMEM;
2569 }
2570
2571 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
2572 extack);
2573 cls_flower.command = add ?
2574 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
2575 cls_flower.cookie = (unsigned long)f;
2576 cls_flower.rule->match.dissector = &f->mask->dissector;
2577 cls_flower.rule->match.mask = &f->mask->key;
2578 cls_flower.rule->match.key = &f->mkey;
2579
2580 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
2581 cls_flower.common.extack);
2582 if (err) {
2583 kfree(cls_flower.rule);
2584 if (tc_skip_sw(f->flags)) {
2585 __fl_put(f);
2586 return err;
2587 }
2588 goto next_flow;
2589 }
2590
2591 cls_flower.classid = f->res.classid;
2592
2593 err = tc_setup_cb_reoffload(block, tp, add, cb,
2594 TC_SETUP_CLSFLOWER, &cls_flower,
2595 cb_priv, &f->flags,
2596 &f->in_hw_count);
2597 tc_cleanup_offload_action(&cls_flower.rule->action);
2598 kfree(cls_flower.rule);
2599
2600 if (err) {
2601 __fl_put(f);
2602 return err;
2603 }
2604next_flow:
2605 __fl_put(f);
2606 }
2607
2608 return 0;
2609}
2610
2611static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2612{
2613 struct flow_cls_offload *cls_flower = type_data;
2614 struct cls_fl_filter *f =
2615 (struct cls_fl_filter *) cls_flower->cookie;
2616 struct cls_fl_head *head = fl_head_dereference(tp);
2617
2618 spin_lock(&tp->lock);
2619 list_add(&f->hw_list, &head->hw_filters);
2620 spin_unlock(&tp->lock);
2621}
2622
2623static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2624{
2625 struct flow_cls_offload *cls_flower = type_data;
2626 struct cls_fl_filter *f =
2627 (struct cls_fl_filter *) cls_flower->cookie;
2628
2629 spin_lock(&tp->lock);
2630 if (!list_empty(&f->hw_list))
2631 list_del_init(&f->hw_list);
2632 spin_unlock(&tp->lock);
2633}
2634
2635static int fl_hw_create_tmplt(struct tcf_chain *chain,
2636 struct fl_flow_tmplt *tmplt)
2637{
2638 struct flow_cls_offload cls_flower = {};
2639 struct tcf_block *block = chain->block;
2640
2641 cls_flower.rule = flow_rule_alloc(0);
2642 if (!cls_flower.rule)
2643 return -ENOMEM;
2644
2645 cls_flower.common.chain_index = chain->index;
2646 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2647 cls_flower.cookie = (unsigned long) tmplt;
2648 cls_flower.rule->match.dissector = &tmplt->dissector;
2649 cls_flower.rule->match.mask = &tmplt->mask;
2650 cls_flower.rule->match.key = &tmplt->dummy_key;
2651
2652 /* We don't care if driver (any of them) fails to handle this
2653 * call. It serves just as a hint for it.
2654 */
2655 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2656 kfree(cls_flower.rule);
2657
2658 return 0;
2659}
2660
2661static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2662 struct fl_flow_tmplt *tmplt)
2663{
2664 struct flow_cls_offload cls_flower = {};
2665 struct tcf_block *block = chain->block;
2666
2667 cls_flower.common.chain_index = chain->index;
2668 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2669 cls_flower.cookie = (unsigned long) tmplt;
2670
2671 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2672}
2673
2674static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2675 struct nlattr **tca,
2676 struct netlink_ext_ack *extack)
2677{
2678 struct fl_flow_tmplt *tmplt;
2679 struct nlattr **tb;
2680 int err;
2681
2682 if (!tca[TCA_OPTIONS])
2683 return ERR_PTR(-EINVAL);
2684
2685 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2686 if (!tb)
2687 return ERR_PTR(-ENOBUFS);
2688 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2689 tca[TCA_OPTIONS], fl_policy, NULL);
2690 if (err)
2691 goto errout_tb;
2692
2693 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2694 if (!tmplt) {
2695 err = -ENOMEM;
2696 goto errout_tb;
2697 }
2698 tmplt->chain = chain;
2699 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2700 if (err)
2701 goto errout_tmplt;
2702
2703 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2704
2705 err = fl_hw_create_tmplt(chain, tmplt);
2706 if (err)
2707 goto errout_tmplt;
2708
2709 kfree(tb);
2710 return tmplt;
2711
2712errout_tmplt:
2713 kfree(tmplt);
2714errout_tb:
2715 kfree(tb);
2716 return ERR_PTR(err);
2717}
2718
2719static void fl_tmplt_destroy(void *tmplt_priv)
2720{
2721 struct fl_flow_tmplt *tmplt = tmplt_priv;
2722
2723 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2724 kfree(tmplt);
2725}
2726
2727static void fl_tmplt_reoffload(struct tcf_chain *chain, bool add,
2728 flow_setup_cb_t *cb, void *cb_priv)
2729{
2730 struct fl_flow_tmplt *tmplt = chain->tmplt_priv;
2731 struct flow_cls_offload cls_flower = {};
2732
2733 cls_flower.rule = flow_rule_alloc(0);
2734 if (!cls_flower.rule)
2735 return;
2736
2737 cls_flower.common.chain_index = chain->index;
2738 cls_flower.command = add ? FLOW_CLS_TMPLT_CREATE :
2739 FLOW_CLS_TMPLT_DESTROY;
2740 cls_flower.cookie = (unsigned long) tmplt;
2741 cls_flower.rule->match.dissector = &tmplt->dissector;
2742 cls_flower.rule->match.mask = &tmplt->mask;
2743 cls_flower.rule->match.key = &tmplt->dummy_key;
2744
2745 cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
2746 kfree(cls_flower.rule);
2747}
2748
2749static int fl_dump_key_val(struct sk_buff *skb,
2750 void *val, int val_type,
2751 void *mask, int mask_type, int len)
2752{
2753 int err;
2754
2755 if (!memchr_inv(mask, 0, len))
2756 return 0;
2757 err = nla_put(skb, val_type, len, val);
2758 if (err)
2759 return err;
2760 if (mask_type != TCA_FLOWER_UNSPEC) {
2761 err = nla_put(skb, mask_type, len, mask);
2762 if (err)
2763 return err;
2764 }
2765 return 0;
2766}
2767
2768static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2769 struct fl_flow_key *mask)
2770{
2771 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2772 TCA_FLOWER_KEY_PORT_DST_MIN,
2773 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2774 sizeof(key->tp_range.tp_min.dst)) ||
2775 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2776 TCA_FLOWER_KEY_PORT_DST_MAX,
2777 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2778 sizeof(key->tp_range.tp_max.dst)) ||
2779 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2780 TCA_FLOWER_KEY_PORT_SRC_MIN,
2781 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2782 sizeof(key->tp_range.tp_min.src)) ||
2783 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2784 TCA_FLOWER_KEY_PORT_SRC_MAX,
2785 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2786 sizeof(key->tp_range.tp_max.src)))
2787 return -1;
2788
2789 return 0;
2790}
2791
2792static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2793 struct flow_dissector_key_mpls *mpls_key,
2794 struct flow_dissector_key_mpls *mpls_mask,
2795 u8 lse_index)
2796{
2797 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2798 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2799 int err;
2800
2801 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2802 lse_index + 1);
2803 if (err)
2804 return err;
2805
2806 if (lse_mask->mpls_ttl) {
2807 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2808 lse_key->mpls_ttl);
2809 if (err)
2810 return err;
2811 }
2812 if (lse_mask->mpls_bos) {
2813 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2814 lse_key->mpls_bos);
2815 if (err)
2816 return err;
2817 }
2818 if (lse_mask->mpls_tc) {
2819 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2820 lse_key->mpls_tc);
2821 if (err)
2822 return err;
2823 }
2824 if (lse_mask->mpls_label) {
2825 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2826 lse_key->mpls_label);
2827 if (err)
2828 return err;
2829 }
2830
2831 return 0;
2832}
2833
2834static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2835 struct flow_dissector_key_mpls *mpls_key,
2836 struct flow_dissector_key_mpls *mpls_mask)
2837{
2838 struct nlattr *opts;
2839 struct nlattr *lse;
2840 u8 lse_index;
2841 int err;
2842
2843 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2844 if (!opts)
2845 return -EMSGSIZE;
2846
2847 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2848 if (!(mpls_mask->used_lses & 1 << lse_index))
2849 continue;
2850
2851 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2852 if (!lse) {
2853 err = -EMSGSIZE;
2854 goto err_opts;
2855 }
2856
2857 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2858 lse_index);
2859 if (err)
2860 goto err_opts_lse;
2861 nla_nest_end(skb, lse);
2862 }
2863 nla_nest_end(skb, opts);
2864
2865 return 0;
2866
2867err_opts_lse:
2868 nla_nest_cancel(skb, lse);
2869err_opts:
2870 nla_nest_cancel(skb, opts);
2871
2872 return err;
2873}
2874
2875static int fl_dump_key_mpls(struct sk_buff *skb,
2876 struct flow_dissector_key_mpls *mpls_key,
2877 struct flow_dissector_key_mpls *mpls_mask)
2878{
2879 struct flow_dissector_mpls_lse *lse_mask;
2880 struct flow_dissector_mpls_lse *lse_key;
2881 int err;
2882
2883 if (!mpls_mask->used_lses)
2884 return 0;
2885
2886 lse_mask = &mpls_mask->ls[0];
2887 lse_key = &mpls_key->ls[0];
2888
2889 /* For backward compatibility, don't use the MPLS nested attributes if
2890 * the rule can be expressed using the old attributes.
2891 */
2892 if (mpls_mask->used_lses & ~1 ||
2893 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2894 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2895 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2896
2897 if (lse_mask->mpls_ttl) {
2898 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2899 lse_key->mpls_ttl);
2900 if (err)
2901 return err;
2902 }
2903 if (lse_mask->mpls_tc) {
2904 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2905 lse_key->mpls_tc);
2906 if (err)
2907 return err;
2908 }
2909 if (lse_mask->mpls_label) {
2910 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2911 lse_key->mpls_label);
2912 if (err)
2913 return err;
2914 }
2915 if (lse_mask->mpls_bos) {
2916 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2917 lse_key->mpls_bos);
2918 if (err)
2919 return err;
2920 }
2921 return 0;
2922}
2923
2924static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2925 struct flow_dissector_key_ip *key,
2926 struct flow_dissector_key_ip *mask)
2927{
2928 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2929 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2930 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2931 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2932
2933 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2934 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2935 return -1;
2936
2937 return 0;
2938}
2939
2940static int fl_dump_key_vlan(struct sk_buff *skb,
2941 int vlan_id_key, int vlan_prio_key,
2942 struct flow_dissector_key_vlan *vlan_key,
2943 struct flow_dissector_key_vlan *vlan_mask)
2944{
2945 int err;
2946
2947 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2948 return 0;
2949 if (vlan_mask->vlan_id) {
2950 err = nla_put_u16(skb, vlan_id_key,
2951 vlan_key->vlan_id);
2952 if (err)
2953 return err;
2954 }
2955 if (vlan_mask->vlan_priority) {
2956 err = nla_put_u8(skb, vlan_prio_key,
2957 vlan_key->vlan_priority);
2958 if (err)
2959 return err;
2960 }
2961 return 0;
2962}
2963
2964static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2965 u32 *flower_key, u32 *flower_mask,
2966 u32 flower_flag_bit, u32 dissector_flag_bit)
2967{
2968 if (dissector_mask & dissector_flag_bit) {
2969 *flower_mask |= flower_flag_bit;
2970 if (dissector_key & dissector_flag_bit)
2971 *flower_key |= flower_flag_bit;
2972 }
2973}
2974
2975static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2976{
2977 u32 key, mask;
2978 __be32 _key, _mask;
2979 int err;
2980
2981 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2982 return 0;
2983
2984 key = 0;
2985 mask = 0;
2986
2987 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2988 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2989 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2990 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2991 FLOW_DIS_FIRST_FRAG);
2992
2993 _key = cpu_to_be32(key);
2994 _mask = cpu_to_be32(mask);
2995
2996 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2997 if (err)
2998 return err;
2999
3000 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
3001}
3002
3003static int fl_dump_key_geneve_opt(struct sk_buff *skb,
3004 struct flow_dissector_key_enc_opts *enc_opts)
3005{
3006 struct geneve_opt *opt;
3007 struct nlattr *nest;
3008 int opt_off = 0;
3009
3010 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
3011 if (!nest)
3012 goto nla_put_failure;
3013
3014 while (enc_opts->len > opt_off) {
3015 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
3016
3017 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
3018 opt->opt_class))
3019 goto nla_put_failure;
3020 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
3021 opt->type))
3022 goto nla_put_failure;
3023 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
3024 opt->length * 4, opt->opt_data))
3025 goto nla_put_failure;
3026
3027 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
3028 }
3029 nla_nest_end(skb, nest);
3030 return 0;
3031
3032nla_put_failure:
3033 nla_nest_cancel(skb, nest);
3034 return -EMSGSIZE;
3035}
3036
3037static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
3038 struct flow_dissector_key_enc_opts *enc_opts)
3039{
3040 struct vxlan_metadata *md;
3041 struct nlattr *nest;
3042
3043 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
3044 if (!nest)
3045 goto nla_put_failure;
3046
3047 md = (struct vxlan_metadata *)&enc_opts->data[0];
3048 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
3049 goto nla_put_failure;
3050
3051 nla_nest_end(skb, nest);
3052 return 0;
3053
3054nla_put_failure:
3055 nla_nest_cancel(skb, nest);
3056 return -EMSGSIZE;
3057}
3058
3059static int fl_dump_key_erspan_opt(struct sk_buff *skb,
3060 struct flow_dissector_key_enc_opts *enc_opts)
3061{
3062 struct erspan_metadata *md;
3063 struct nlattr *nest;
3064
3065 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
3066 if (!nest)
3067 goto nla_put_failure;
3068
3069 md = (struct erspan_metadata *)&enc_opts->data[0];
3070 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
3071 goto nla_put_failure;
3072
3073 if (md->version == 1 &&
3074 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
3075 goto nla_put_failure;
3076
3077 if (md->version == 2 &&
3078 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
3079 md->u.md2.dir) ||
3080 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
3081 get_hwid(&md->u.md2))))
3082 goto nla_put_failure;
3083
3084 nla_nest_end(skb, nest);
3085 return 0;
3086
3087nla_put_failure:
3088 nla_nest_cancel(skb, nest);
3089 return -EMSGSIZE;
3090}
3091
3092static int fl_dump_key_gtp_opt(struct sk_buff *skb,
3093 struct flow_dissector_key_enc_opts *enc_opts)
3094
3095{
3096 struct gtp_pdu_session_info *session_info;
3097 struct nlattr *nest;
3098
3099 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GTP);
3100 if (!nest)
3101 goto nla_put_failure;
3102
3103 session_info = (struct gtp_pdu_session_info *)&enc_opts->data[0];
3104
3105 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE,
3106 session_info->pdu_type))
3107 goto nla_put_failure;
3108
3109 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_QFI, session_info->qfi))
3110 goto nla_put_failure;
3111
3112 nla_nest_end(skb, nest);
3113 return 0;
3114
3115nla_put_failure:
3116 nla_nest_cancel(skb, nest);
3117 return -EMSGSIZE;
3118}
3119
3120static int fl_dump_key_ct(struct sk_buff *skb,
3121 struct flow_dissector_key_ct *key,
3122 struct flow_dissector_key_ct *mask)
3123{
3124 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
3125 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
3126 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
3127 sizeof(key->ct_state)))
3128 goto nla_put_failure;
3129
3130 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
3131 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
3132 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
3133 sizeof(key->ct_zone)))
3134 goto nla_put_failure;
3135
3136 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
3137 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
3138 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
3139 sizeof(key->ct_mark)))
3140 goto nla_put_failure;
3141
3142 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
3143 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
3144 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
3145 sizeof(key->ct_labels)))
3146 goto nla_put_failure;
3147
3148 return 0;
3149
3150nla_put_failure:
3151 return -EMSGSIZE;
3152}
3153
3154static int fl_dump_key_cfm(struct sk_buff *skb,
3155 struct flow_dissector_key_cfm *key,
3156 struct flow_dissector_key_cfm *mask)
3157{
3158 struct nlattr *opts;
3159 int err;
3160 u8 mdl;
3161
3162 if (!memchr_inv(mask, 0, sizeof(*mask)))
3163 return 0;
3164
3165 opts = nla_nest_start(skb, TCA_FLOWER_KEY_CFM);
3166 if (!opts)
3167 return -EMSGSIZE;
3168
3169 if (FIELD_GET(FLOW_DIS_CFM_MDL_MASK, mask->mdl_ver)) {
3170 mdl = FIELD_GET(FLOW_DIS_CFM_MDL_MASK, key->mdl_ver);
3171 err = nla_put_u8(skb, TCA_FLOWER_KEY_CFM_MD_LEVEL, mdl);
3172 if (err)
3173 goto err_cfm_opts;
3174 }
3175
3176 if (mask->opcode) {
3177 err = nla_put_u8(skb, TCA_FLOWER_KEY_CFM_OPCODE, key->opcode);
3178 if (err)
3179 goto err_cfm_opts;
3180 }
3181
3182 nla_nest_end(skb, opts);
3183
3184 return 0;
3185
3186err_cfm_opts:
3187 nla_nest_cancel(skb, opts);
3188 return err;
3189}
3190
3191static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
3192 struct flow_dissector_key_enc_opts *enc_opts)
3193{
3194 struct nlattr *nest;
3195 int err;
3196
3197 if (!enc_opts->len)
3198 return 0;
3199
3200 nest = nla_nest_start_noflag(skb, enc_opt_type);
3201 if (!nest)
3202 goto nla_put_failure;
3203
3204 switch (enc_opts->dst_opt_type) {
3205 case TUNNEL_GENEVE_OPT:
3206 err = fl_dump_key_geneve_opt(skb, enc_opts);
3207 if (err)
3208 goto nla_put_failure;
3209 break;
3210 case TUNNEL_VXLAN_OPT:
3211 err = fl_dump_key_vxlan_opt(skb, enc_opts);
3212 if (err)
3213 goto nla_put_failure;
3214 break;
3215 case TUNNEL_ERSPAN_OPT:
3216 err = fl_dump_key_erspan_opt(skb, enc_opts);
3217 if (err)
3218 goto nla_put_failure;
3219 break;
3220 case TUNNEL_GTP_OPT:
3221 err = fl_dump_key_gtp_opt(skb, enc_opts);
3222 if (err)
3223 goto nla_put_failure;
3224 break;
3225 default:
3226 goto nla_put_failure;
3227 }
3228 nla_nest_end(skb, nest);
3229 return 0;
3230
3231nla_put_failure:
3232 nla_nest_cancel(skb, nest);
3233 return -EMSGSIZE;
3234}
3235
3236static int fl_dump_key_enc_opt(struct sk_buff *skb,
3237 struct flow_dissector_key_enc_opts *key_opts,
3238 struct flow_dissector_key_enc_opts *msk_opts)
3239{
3240 int err;
3241
3242 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
3243 if (err)
3244 return err;
3245
3246 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
3247}
3248
3249static int fl_dump_key(struct sk_buff *skb, struct net *net,
3250 struct fl_flow_key *key, struct fl_flow_key *mask)
3251{
3252 if (mask->meta.ingress_ifindex) {
3253 struct net_device *dev;
3254
3255 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
3256 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
3257 goto nla_put_failure;
3258 }
3259
3260 if (fl_dump_key_val(skb, &key->meta.l2_miss,
3261 TCA_FLOWER_L2_MISS, &mask->meta.l2_miss,
3262 TCA_FLOWER_UNSPEC, sizeof(key->meta.l2_miss)))
3263 goto nla_put_failure;
3264
3265 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
3266 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
3267 sizeof(key->eth.dst)) ||
3268 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
3269 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
3270 sizeof(key->eth.src)) ||
3271 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
3272 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
3273 sizeof(key->basic.n_proto)))
3274 goto nla_put_failure;
3275
3276 if (mask->num_of_vlans.num_of_vlans) {
3277 if (nla_put_u8(skb, TCA_FLOWER_KEY_NUM_OF_VLANS, key->num_of_vlans.num_of_vlans))
3278 goto nla_put_failure;
3279 }
3280
3281 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
3282 goto nla_put_failure;
3283
3284 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
3285 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
3286 goto nla_put_failure;
3287
3288 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
3289 TCA_FLOWER_KEY_CVLAN_PRIO,
3290 &key->cvlan, &mask->cvlan) ||
3291 (mask->cvlan.vlan_tpid &&
3292 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3293 key->cvlan.vlan_tpid)))
3294 goto nla_put_failure;
3295
3296 if (mask->basic.n_proto) {
3297 if (mask->cvlan.vlan_eth_type) {
3298 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
3299 key->basic.n_proto))
3300 goto nla_put_failure;
3301 } else if (mask->vlan.vlan_eth_type) {
3302 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3303 key->vlan.vlan_eth_type))
3304 goto nla_put_failure;
3305 }
3306 }
3307
3308 if ((key->basic.n_proto == htons(ETH_P_IP) ||
3309 key->basic.n_proto == htons(ETH_P_IPV6)) &&
3310 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
3311 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
3312 sizeof(key->basic.ip_proto)) ||
3313 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
3314 goto nla_put_failure;
3315
3316 if (mask->pppoe.session_id) {
3317 if (nla_put_be16(skb, TCA_FLOWER_KEY_PPPOE_SID,
3318 key->pppoe.session_id))
3319 goto nla_put_failure;
3320 }
3321 if (mask->basic.n_proto && mask->pppoe.ppp_proto) {
3322 if (nla_put_be16(skb, TCA_FLOWER_KEY_PPP_PROTO,
3323 key->pppoe.ppp_proto))
3324 goto nla_put_failure;
3325 }
3326
3327 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3328 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
3329 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
3330 sizeof(key->ipv4.src)) ||
3331 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
3332 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
3333 sizeof(key->ipv4.dst))))
3334 goto nla_put_failure;
3335 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3336 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
3337 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
3338 sizeof(key->ipv6.src)) ||
3339 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
3340 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
3341 sizeof(key->ipv6.dst))))
3342 goto nla_put_failure;
3343
3344 if (key->basic.ip_proto == IPPROTO_TCP &&
3345 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
3346 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
3347 sizeof(key->tp.src)) ||
3348 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
3349 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
3350 sizeof(key->tp.dst)) ||
3351 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
3352 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
3353 sizeof(key->tcp.flags))))
3354 goto nla_put_failure;
3355 else if (key->basic.ip_proto == IPPROTO_UDP &&
3356 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
3357 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
3358 sizeof(key->tp.src)) ||
3359 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
3360 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
3361 sizeof(key->tp.dst))))
3362 goto nla_put_failure;
3363 else if (key->basic.ip_proto == IPPROTO_SCTP &&
3364 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
3365 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
3366 sizeof(key->tp.src)) ||
3367 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
3368 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
3369 sizeof(key->tp.dst))))
3370 goto nla_put_failure;
3371 else if (key->basic.n_proto == htons(ETH_P_IP) &&
3372 key->basic.ip_proto == IPPROTO_ICMP &&
3373 (fl_dump_key_val(skb, &key->icmp.type,
3374 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
3375 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
3376 sizeof(key->icmp.type)) ||
3377 fl_dump_key_val(skb, &key->icmp.code,
3378 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
3379 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
3380 sizeof(key->icmp.code))))
3381 goto nla_put_failure;
3382 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
3383 key->basic.ip_proto == IPPROTO_ICMPV6 &&
3384 (fl_dump_key_val(skb, &key->icmp.type,
3385 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
3386 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
3387 sizeof(key->icmp.type)) ||
3388 fl_dump_key_val(skb, &key->icmp.code,
3389 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
3390 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
3391 sizeof(key->icmp.code))))
3392 goto nla_put_failure;
3393 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
3394 key->basic.n_proto == htons(ETH_P_RARP)) &&
3395 (fl_dump_key_val(skb, &key->arp.sip,
3396 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
3397 TCA_FLOWER_KEY_ARP_SIP_MASK,
3398 sizeof(key->arp.sip)) ||
3399 fl_dump_key_val(skb, &key->arp.tip,
3400 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
3401 TCA_FLOWER_KEY_ARP_TIP_MASK,
3402 sizeof(key->arp.tip)) ||
3403 fl_dump_key_val(skb, &key->arp.op,
3404 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
3405 TCA_FLOWER_KEY_ARP_OP_MASK,
3406 sizeof(key->arp.op)) ||
3407 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
3408 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
3409 sizeof(key->arp.sha)) ||
3410 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
3411 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
3412 sizeof(key->arp.tha))))
3413 goto nla_put_failure;
3414 else if (key->basic.ip_proto == IPPROTO_L2TP &&
3415 fl_dump_key_val(skb, &key->l2tpv3.session_id,
3416 TCA_FLOWER_KEY_L2TPV3_SID,
3417 &mask->l2tpv3.session_id,
3418 TCA_FLOWER_UNSPEC,
3419 sizeof(key->l2tpv3.session_id)))
3420 goto nla_put_failure;
3421
3422 if (key->ipsec.spi &&
3423 fl_dump_key_val(skb, &key->ipsec.spi, TCA_FLOWER_KEY_SPI,
3424 &mask->ipsec.spi, TCA_FLOWER_KEY_SPI_MASK,
3425 sizeof(key->ipsec.spi)))
3426 goto nla_put_failure;
3427
3428 if ((key->basic.ip_proto == IPPROTO_TCP ||
3429 key->basic.ip_proto == IPPROTO_UDP ||
3430 key->basic.ip_proto == IPPROTO_SCTP) &&
3431 fl_dump_key_port_range(skb, key, mask))
3432 goto nla_put_failure;
3433
3434 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3435 (fl_dump_key_val(skb, &key->enc_ipv4.src,
3436 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
3437 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
3438 sizeof(key->enc_ipv4.src)) ||
3439 fl_dump_key_val(skb, &key->enc_ipv4.dst,
3440 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
3441 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
3442 sizeof(key->enc_ipv4.dst))))
3443 goto nla_put_failure;
3444 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3445 (fl_dump_key_val(skb, &key->enc_ipv6.src,
3446 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
3447 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
3448 sizeof(key->enc_ipv6.src)) ||
3449 fl_dump_key_val(skb, &key->enc_ipv6.dst,
3450 TCA_FLOWER_KEY_ENC_IPV6_DST,
3451 &mask->enc_ipv6.dst,
3452 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
3453 sizeof(key->enc_ipv6.dst))))
3454 goto nla_put_failure;
3455
3456 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
3457 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
3458 sizeof(key->enc_key_id)) ||
3459 fl_dump_key_val(skb, &key->enc_tp.src,
3460 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
3461 &mask->enc_tp.src,
3462 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
3463 sizeof(key->enc_tp.src)) ||
3464 fl_dump_key_val(skb, &key->enc_tp.dst,
3465 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
3466 &mask->enc_tp.dst,
3467 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
3468 sizeof(key->enc_tp.dst)) ||
3469 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
3470 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
3471 goto nla_put_failure;
3472
3473 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
3474 goto nla_put_failure;
3475
3476 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
3477 goto nla_put_failure;
3478
3479 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
3480 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
3481 sizeof(key->hash.hash)))
3482 goto nla_put_failure;
3483
3484 if (fl_dump_key_cfm(skb, &key->cfm, &mask->cfm))
3485 goto nla_put_failure;
3486
3487 return 0;
3488
3489nla_put_failure:
3490 return -EMSGSIZE;
3491}
3492
3493static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
3494 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3495{
3496 struct cls_fl_filter *f = fh;
3497 struct nlattr *nest;
3498 struct fl_flow_key *key, *mask;
3499 bool skip_hw;
3500
3501 if (!f)
3502 return skb->len;
3503
3504 t->tcm_handle = f->handle;
3505
3506 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3507 if (!nest)
3508 goto nla_put_failure;
3509
3510 spin_lock(&tp->lock);
3511
3512 if (f->res.classid &&
3513 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3514 goto nla_put_failure_locked;
3515
3516 key = &f->key;
3517 mask = &f->mask->key;
3518 skip_hw = tc_skip_hw(f->flags);
3519
3520 if (fl_dump_key(skb, net, key, mask))
3521 goto nla_put_failure_locked;
3522
3523 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3524 goto nla_put_failure_locked;
3525
3526 spin_unlock(&tp->lock);
3527
3528 if (!skip_hw)
3529 fl_hw_update_stats(tp, f, rtnl_held);
3530
3531 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3532 goto nla_put_failure;
3533
3534 if (tcf_exts_dump(skb, &f->exts))
3535 goto nla_put_failure;
3536
3537 nla_nest_end(skb, nest);
3538
3539 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3540 goto nla_put_failure;
3541
3542 return skb->len;
3543
3544nla_put_failure_locked:
3545 spin_unlock(&tp->lock);
3546nla_put_failure:
3547 nla_nest_cancel(skb, nest);
3548 return -1;
3549}
3550
3551static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3552 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3553{
3554 struct cls_fl_filter *f = fh;
3555 struct nlattr *nest;
3556 bool skip_hw;
3557
3558 if (!f)
3559 return skb->len;
3560
3561 t->tcm_handle = f->handle;
3562
3563 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3564 if (!nest)
3565 goto nla_put_failure;
3566
3567 spin_lock(&tp->lock);
3568
3569 skip_hw = tc_skip_hw(f->flags);
3570
3571 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3572 goto nla_put_failure_locked;
3573
3574 spin_unlock(&tp->lock);
3575
3576 if (!skip_hw)
3577 fl_hw_update_stats(tp, f, rtnl_held);
3578
3579 if (tcf_exts_terse_dump(skb, &f->exts))
3580 goto nla_put_failure;
3581
3582 nla_nest_end(skb, nest);
3583
3584 return skb->len;
3585
3586nla_put_failure_locked:
3587 spin_unlock(&tp->lock);
3588nla_put_failure:
3589 nla_nest_cancel(skb, nest);
3590 return -1;
3591}
3592
3593static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3594{
3595 struct fl_flow_tmplt *tmplt = tmplt_priv;
3596 struct fl_flow_key *key, *mask;
3597 struct nlattr *nest;
3598
3599 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3600 if (!nest)
3601 goto nla_put_failure;
3602
3603 key = &tmplt->dummy_key;
3604 mask = &tmplt->mask;
3605
3606 if (fl_dump_key(skb, net, key, mask))
3607 goto nla_put_failure;
3608
3609 nla_nest_end(skb, nest);
3610
3611 return skb->len;
3612
3613nla_put_failure:
3614 nla_nest_cancel(skb, nest);
3615 return -EMSGSIZE;
3616}
3617
3618static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3619 unsigned long base)
3620{
3621 struct cls_fl_filter *f = fh;
3622
3623 tc_cls_bind_class(classid, cl, q, &f->res, base);
3624}
3625
3626static bool fl_delete_empty(struct tcf_proto *tp)
3627{
3628 struct cls_fl_head *head = fl_head_dereference(tp);
3629
3630 spin_lock(&tp->lock);
3631 tp->deleting = idr_is_empty(&head->handle_idr);
3632 spin_unlock(&tp->lock);
3633
3634 return tp->deleting;
3635}
3636
3637static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3638 .kind = "flower",
3639 .classify = fl_classify,
3640 .init = fl_init,
3641 .destroy = fl_destroy,
3642 .get = fl_get,
3643 .put = fl_put,
3644 .change = fl_change,
3645 .delete = fl_delete,
3646 .delete_empty = fl_delete_empty,
3647 .walk = fl_walk,
3648 .reoffload = fl_reoffload,
3649 .hw_add = fl_hw_add,
3650 .hw_del = fl_hw_del,
3651 .dump = fl_dump,
3652 .terse_dump = fl_terse_dump,
3653 .bind_class = fl_bind_class,
3654 .tmplt_create = fl_tmplt_create,
3655 .tmplt_destroy = fl_tmplt_destroy,
3656 .tmplt_reoffload = fl_tmplt_reoffload,
3657 .tmplt_dump = fl_tmplt_dump,
3658 .get_exts = fl_get_exts,
3659 .owner = THIS_MODULE,
3660 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
3661};
3662
3663static int __init cls_fl_init(void)
3664{
3665 return register_tcf_proto_ops(&cls_fl_ops);
3666}
3667
3668static void __exit cls_fl_exit(void)
3669{
3670 unregister_tcf_proto_ops(&cls_fl_ops);
3671}
3672
3673module_init(cls_fl_init);
3674module_exit(cls_fl_exit);
3675
3676MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3677MODULE_DESCRIPTION("Flower classifier");
3678MODULE_LICENSE("GPL v2");