1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * net/sched/cls_flower.c Flower classifier
5 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
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>
15 #include <linux/if_ether.h>
16 #include <linux/in6.h>
18 #include <linux/mpls.h>
19 #include <linux/ppp_defs.h>
21 #include <net/sch_generic.h>
22 #include <net/pkt_cls.h>
23 #include <net/pkt_sched.h>
25 #include <net/flow_dissector.h>
26 #include <net/geneve.h>
27 #include <net/vxlan.h>
28 #include <net/erspan.h>
30 #include <net/tc_wrapper.h>
33 #include <net/dst_metadata.h>
35 #include <uapi/linux/netfilter/nf_conntrack_common.h>
37 #define TCA_FLOWER_KEY_CT_FLAGS_MAX \
38 ((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
39 #define TCA_FLOWER_KEY_CT_FLAGS_MASK \
40 (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
43 struct flow_dissector_key_meta meta;
44 struct flow_dissector_key_control control;
45 struct flow_dissector_key_control enc_control;
46 struct flow_dissector_key_basic basic;
47 struct flow_dissector_key_eth_addrs eth;
48 struct flow_dissector_key_vlan vlan;
49 struct flow_dissector_key_vlan cvlan;
51 struct flow_dissector_key_ipv4_addrs ipv4;
52 struct flow_dissector_key_ipv6_addrs ipv6;
54 struct flow_dissector_key_ports tp;
55 struct flow_dissector_key_icmp icmp;
56 struct flow_dissector_key_arp arp;
57 struct flow_dissector_key_keyid enc_key_id;
59 struct flow_dissector_key_ipv4_addrs enc_ipv4;
60 struct flow_dissector_key_ipv6_addrs enc_ipv6;
62 struct flow_dissector_key_ports enc_tp;
63 struct flow_dissector_key_mpls mpls;
64 struct flow_dissector_key_tcp tcp;
65 struct flow_dissector_key_ip ip;
66 struct flow_dissector_key_ip enc_ip;
67 struct flow_dissector_key_enc_opts enc_opts;
68 struct flow_dissector_key_ports_range tp_range;
69 struct flow_dissector_key_ct ct;
70 struct flow_dissector_key_hash hash;
71 struct flow_dissector_key_num_of_vlans num_of_vlans;
72 struct flow_dissector_key_pppoe pppoe;
73 struct flow_dissector_key_l2tpv3 l2tpv3;
74 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
76 struct fl_flow_mask_range {
77 unsigned short int start;
78 unsigned short int end;
82 struct fl_flow_key key;
83 struct fl_flow_mask_range range;
85 struct rhash_head ht_node;
87 struct rhashtable_params filter_ht_params;
88 struct flow_dissector dissector;
89 struct list_head filters;
90 struct rcu_work rwork;
91 struct list_head list;
95 struct fl_flow_tmplt {
96 struct fl_flow_key dummy_key;
97 struct fl_flow_key mask;
98 struct flow_dissector dissector;
99 struct tcf_chain *chain;
103 struct rhashtable ht;
104 spinlock_t masks_lock; /* Protect masks list */
105 struct list_head masks;
106 struct list_head hw_filters;
107 struct rcu_work rwork;
108 struct idr handle_idr;
111 struct cls_fl_filter {
112 struct fl_flow_mask *mask;
113 struct rhash_head ht_node;
114 struct fl_flow_key mkey;
115 struct tcf_exts exts;
116 struct tcf_result res;
117 struct fl_flow_key key;
118 struct list_head list;
119 struct list_head hw_list;
123 struct rcu_work rwork;
124 struct net_device *hw_dev;
125 /* Flower classifier is unlocked, which means that its reference counter
126 * can be changed concurrently without any kind of external
127 * synchronization. Use atomic reference counter to be concurrency-safe.
133 static const struct rhashtable_params mask_ht_params = {
134 .key_offset = offsetof(struct fl_flow_mask, key),
135 .key_len = sizeof(struct fl_flow_key),
136 .head_offset = offsetof(struct fl_flow_mask, ht_node),
137 .automatic_shrinking = true,
140 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
142 return mask->range.end - mask->range.start;
145 static void fl_mask_update_range(struct fl_flow_mask *mask)
147 const u8 *bytes = (const u8 *) &mask->key;
148 size_t size = sizeof(mask->key);
149 size_t i, first = 0, last;
151 for (i = 0; i < size; i++) {
158 for (i = size - 1; i != first; i--) {
164 mask->range.start = rounddown(first, sizeof(long));
165 mask->range.end = roundup(last + 1, sizeof(long));
168 static void *fl_key_get_start(struct fl_flow_key *key,
169 const struct fl_flow_mask *mask)
171 return (u8 *) key + mask->range.start;
174 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
175 struct fl_flow_mask *mask)
177 const long *lkey = fl_key_get_start(key, mask);
178 const long *lmask = fl_key_get_start(&mask->key, mask);
179 long *lmkey = fl_key_get_start(mkey, mask);
182 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
183 *lmkey++ = *lkey++ & *lmask++;
186 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
187 struct fl_flow_mask *mask)
189 const long *lmask = fl_key_get_start(&mask->key, mask);
195 ltmplt = fl_key_get_start(&tmplt->mask, mask);
196 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
197 if (~*ltmplt++ & *lmask++)
203 static void fl_clear_masked_range(struct fl_flow_key *key,
204 struct fl_flow_mask *mask)
206 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
209 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
210 struct fl_flow_key *key,
211 struct fl_flow_key *mkey)
213 u16 min_mask, max_mask, min_val, max_val;
215 min_mask = ntohs(filter->mask->key.tp_range.tp_min.dst);
216 max_mask = ntohs(filter->mask->key.tp_range.tp_max.dst);
217 min_val = ntohs(filter->key.tp_range.tp_min.dst);
218 max_val = ntohs(filter->key.tp_range.tp_max.dst);
220 if (min_mask && max_mask) {
221 if (ntohs(key->tp_range.tp.dst) < min_val ||
222 ntohs(key->tp_range.tp.dst) > max_val)
225 /* skb does not have min and max values */
226 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
227 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
232 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
233 struct fl_flow_key *key,
234 struct fl_flow_key *mkey)
236 u16 min_mask, max_mask, min_val, max_val;
238 min_mask = ntohs(filter->mask->key.tp_range.tp_min.src);
239 max_mask = ntohs(filter->mask->key.tp_range.tp_max.src);
240 min_val = ntohs(filter->key.tp_range.tp_min.src);
241 max_val = ntohs(filter->key.tp_range.tp_max.src);
243 if (min_mask && max_mask) {
244 if (ntohs(key->tp_range.tp.src) < min_val ||
245 ntohs(key->tp_range.tp.src) > max_val)
248 /* skb does not have min and max values */
249 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
250 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
255 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
256 struct fl_flow_key *mkey)
258 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
259 mask->filter_ht_params);
262 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
263 struct fl_flow_key *mkey,
264 struct fl_flow_key *key)
266 struct cls_fl_filter *filter, *f;
268 list_for_each_entry_rcu(filter, &mask->filters, list) {
269 if (!fl_range_port_dst_cmp(filter, key, mkey))
272 if (!fl_range_port_src_cmp(filter, key, mkey))
275 f = __fl_lookup(mask, mkey);
282 static noinline_for_stack
283 struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
285 struct fl_flow_key mkey;
287 fl_set_masked_key(&mkey, key, mask);
288 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
289 return fl_lookup_range(mask, &mkey, key);
291 return __fl_lookup(mask, &mkey);
294 static u16 fl_ct_info_to_flower_map[] = {
295 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
296 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
297 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
298 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
299 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
300 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
301 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
302 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
303 TCA_FLOWER_KEY_CT_FLAGS_RELATED |
304 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
305 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
306 TCA_FLOWER_KEY_CT_FLAGS_NEW,
309 TC_INDIRECT_SCOPE int fl_classify(struct sk_buff *skb,
310 const struct tcf_proto *tp,
311 struct tcf_result *res)
313 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
314 bool post_ct = tc_skb_cb(skb)->post_ct;
315 u16 zone = tc_skb_cb(skb)->zone;
316 struct fl_flow_key skb_key;
317 struct fl_flow_mask *mask;
318 struct cls_fl_filter *f;
320 list_for_each_entry_rcu(mask, &head->masks, list) {
321 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
322 fl_clear_masked_range(&skb_key, mask);
324 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
325 /* skb_flow_dissect() does not set n_proto in case an unknown
326 * protocol, so do it rather here.
328 skb_key.basic.n_proto = skb_protocol(skb, false);
329 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
330 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
331 fl_ct_info_to_flower_map,
332 ARRAY_SIZE(fl_ct_info_to_flower_map),
334 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
335 skb_flow_dissect(skb, &mask->dissector, &skb_key,
336 FLOW_DISSECTOR_F_STOP_BEFORE_ENCAP);
338 f = fl_mask_lookup(mask, &skb_key);
339 if (f && !tc_skip_sw(f->flags)) {
341 return tcf_exts_exec(skb, &f->exts, res);
347 static int fl_init(struct tcf_proto *tp)
349 struct cls_fl_head *head;
351 head = kzalloc(sizeof(*head), GFP_KERNEL);
355 spin_lock_init(&head->masks_lock);
356 INIT_LIST_HEAD_RCU(&head->masks);
357 INIT_LIST_HEAD(&head->hw_filters);
358 rcu_assign_pointer(tp->root, head);
359 idr_init(&head->handle_idr);
361 return rhashtable_init(&head->ht, &mask_ht_params);
364 static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
366 /* temporary masks don't have their filters list and ht initialized */
367 if (mask_init_done) {
368 WARN_ON(!list_empty(&mask->filters));
369 rhashtable_destroy(&mask->ht);
374 static void fl_mask_free_work(struct work_struct *work)
376 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
377 struct fl_flow_mask, rwork);
379 fl_mask_free(mask, true);
382 static void fl_uninit_mask_free_work(struct work_struct *work)
384 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
385 struct fl_flow_mask, rwork);
387 fl_mask_free(mask, false);
390 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
392 if (!refcount_dec_and_test(&mask->refcnt))
395 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
397 spin_lock(&head->masks_lock);
398 list_del_rcu(&mask->list);
399 spin_unlock(&head->masks_lock);
401 tcf_queue_work(&mask->rwork, fl_mask_free_work);
406 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
408 /* Flower classifier only changes root pointer during init and destroy.
409 * Users must obtain reference to tcf_proto instance before calling its
410 * API, so tp->root pointer is protected from concurrent call to
411 * fl_destroy() by reference counting.
413 return rcu_dereference_raw(tp->root);
416 static void __fl_destroy_filter(struct cls_fl_filter *f)
418 tcf_exts_destroy(&f->exts);
419 tcf_exts_put_net(&f->exts);
423 static void fl_destroy_filter_work(struct work_struct *work)
425 struct cls_fl_filter *f = container_of(to_rcu_work(work),
426 struct cls_fl_filter, rwork);
428 __fl_destroy_filter(f);
431 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
432 bool rtnl_held, struct netlink_ext_ack *extack)
434 struct tcf_block *block = tp->chain->block;
435 struct flow_cls_offload cls_flower = {};
437 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
438 cls_flower.command = FLOW_CLS_DESTROY;
439 cls_flower.cookie = (unsigned long) f;
441 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
442 &f->flags, &f->in_hw_count, rtnl_held);
446 static int fl_hw_replace_filter(struct tcf_proto *tp,
447 struct cls_fl_filter *f, bool rtnl_held,
448 struct netlink_ext_ack *extack)
450 struct tcf_block *block = tp->chain->block;
451 struct flow_cls_offload cls_flower = {};
452 bool skip_sw = tc_skip_sw(f->flags);
455 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
456 if (!cls_flower.rule)
459 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
460 cls_flower.command = FLOW_CLS_REPLACE;
461 cls_flower.cookie = (unsigned long) f;
462 cls_flower.rule->match.dissector = &f->mask->dissector;
463 cls_flower.rule->match.mask = &f->mask->key;
464 cls_flower.rule->match.key = &f->mkey;
465 cls_flower.classid = f->res.classid;
467 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
468 cls_flower.common.extack);
470 kfree(cls_flower.rule);
472 return skip_sw ? err : 0;
475 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
476 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
477 tc_cleanup_offload_action(&cls_flower.rule->action);
478 kfree(cls_flower.rule);
481 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
485 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
491 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
494 struct tcf_block *block = tp->chain->block;
495 struct flow_cls_offload cls_flower = {};
497 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
498 cls_flower.command = FLOW_CLS_STATS;
499 cls_flower.cookie = (unsigned long) f;
500 cls_flower.classid = f->res.classid;
502 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
505 tcf_exts_hw_stats_update(&f->exts, cls_flower.stats.bytes,
506 cls_flower.stats.pkts,
507 cls_flower.stats.drops,
508 cls_flower.stats.lastused,
509 cls_flower.stats.used_hw_stats,
510 cls_flower.stats.used_hw_stats_valid);
513 static void __fl_put(struct cls_fl_filter *f)
515 if (!refcount_dec_and_test(&f->refcnt))
518 if (tcf_exts_get_net(&f->exts))
519 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
521 __fl_destroy_filter(f);
524 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
526 struct cls_fl_filter *f;
529 f = idr_find(&head->handle_idr, handle);
530 if (f && !refcount_inc_not_zero(&f->refcnt))
537 static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
538 bool *last, bool rtnl_held,
539 struct netlink_ext_ack *extack)
541 struct cls_fl_head *head = fl_head_dereference(tp);
545 spin_lock(&tp->lock);
547 spin_unlock(&tp->lock);
552 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
553 f->mask->filter_ht_params);
554 idr_remove(&head->handle_idr, f->handle);
555 list_del_rcu(&f->list);
556 spin_unlock(&tp->lock);
558 *last = fl_mask_put(head, f->mask);
559 if (!tc_skip_hw(f->flags))
560 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
561 tcf_unbind_filter(tp, &f->res);
567 static void fl_destroy_sleepable(struct work_struct *work)
569 struct cls_fl_head *head = container_of(to_rcu_work(work),
573 rhashtable_destroy(&head->ht);
575 module_put(THIS_MODULE);
578 static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
579 struct netlink_ext_ack *extack)
581 struct cls_fl_head *head = fl_head_dereference(tp);
582 struct fl_flow_mask *mask, *next_mask;
583 struct cls_fl_filter *f, *next;
586 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
587 list_for_each_entry_safe(f, next, &mask->filters, list) {
588 __fl_delete(tp, f, &last, rtnl_held, extack);
593 idr_destroy(&head->handle_idr);
595 __module_get(THIS_MODULE);
596 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
599 static void fl_put(struct tcf_proto *tp, void *arg)
601 struct cls_fl_filter *f = arg;
606 static void *fl_get(struct tcf_proto *tp, u32 handle)
608 struct cls_fl_head *head = fl_head_dereference(tp);
610 return __fl_get(head, handle);
613 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
614 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
615 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
616 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
618 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
619 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
620 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
621 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
622 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
623 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
624 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
625 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
626 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
627 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
628 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
629 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
630 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
631 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
632 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
633 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
634 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
635 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
636 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
637 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
638 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
639 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
640 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
641 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
642 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
643 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
644 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
645 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
646 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
647 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
648 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
649 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
650 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
651 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
652 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
653 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
654 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
655 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
656 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
657 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
658 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
659 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
660 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
661 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
662 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
663 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
666 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
667 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
668 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
669 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
671 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
672 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
673 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
674 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
675 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
677 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
678 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
679 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
680 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
681 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
683 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
684 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
685 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
686 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
687 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
688 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
689 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
691 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
692 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
693 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
694 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
695 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
696 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
697 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
698 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
699 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
700 [TCA_FLOWER_KEY_CT_STATE] =
701 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
702 [TCA_FLOWER_KEY_CT_STATE_MASK] =
703 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
704 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
705 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
706 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
707 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
708 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
709 .len = 128 / BITS_PER_BYTE },
710 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
711 .len = 128 / BITS_PER_BYTE },
712 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
713 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
714 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
715 [TCA_FLOWER_KEY_NUM_OF_VLANS] = { .type = NLA_U8 },
716 [TCA_FLOWER_KEY_PPPOE_SID] = { .type = NLA_U16 },
717 [TCA_FLOWER_KEY_PPP_PROTO] = { .type = NLA_U16 },
718 [TCA_FLOWER_KEY_L2TPV3_SID] = { .type = NLA_U32 },
722 static const struct nla_policy
723 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
724 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
725 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
726 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
727 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
728 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
729 [TCA_FLOWER_KEY_ENC_OPTS_GTP] = { .type = NLA_NESTED },
732 static const struct nla_policy
733 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
734 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
735 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
736 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
740 static const struct nla_policy
741 vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
742 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
745 static const struct nla_policy
746 erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
747 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
748 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
749 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
750 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
753 static const struct nla_policy
754 gtp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1] = {
755 [TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] = { .type = NLA_U8 },
756 [TCA_FLOWER_KEY_ENC_OPT_GTP_QFI] = { .type = NLA_U8 },
759 static const struct nla_policy
760 mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
761 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
762 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
763 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
764 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
765 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
768 static void fl_set_key_val(struct nlattr **tb,
769 void *val, int val_type,
770 void *mask, int mask_type, int len)
774 nla_memcpy(val, tb[val_type], len);
775 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
776 memset(mask, 0xff, len);
778 nla_memcpy(mask, tb[mask_type], len);
781 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
782 struct fl_flow_key *mask,
783 struct netlink_ext_ack *extack)
785 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
786 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
787 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
788 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
789 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
790 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
791 fl_set_key_val(tb, &key->tp_range.tp_min.src,
792 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
793 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
794 fl_set_key_val(tb, &key->tp_range.tp_max.src,
795 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
796 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
798 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
799 ntohs(key->tp_range.tp_max.dst) <=
800 ntohs(key->tp_range.tp_min.dst)) {
801 NL_SET_ERR_MSG_ATTR(extack,
802 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
803 "Invalid destination port range (min must be strictly smaller than max)");
806 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
807 ntohs(key->tp_range.tp_max.src) <=
808 ntohs(key->tp_range.tp_min.src)) {
809 NL_SET_ERR_MSG_ATTR(extack,
810 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
811 "Invalid source port range (min must be strictly smaller than max)");
818 static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
819 struct flow_dissector_key_mpls *key_val,
820 struct flow_dissector_key_mpls *key_mask,
821 struct netlink_ext_ack *extack)
823 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
824 struct flow_dissector_mpls_lse *lse_mask;
825 struct flow_dissector_mpls_lse *lse_val;
830 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
831 mpls_stack_entry_policy, extack);
835 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
836 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
840 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
842 /* LSE depth starts at 1, for consistency with terminology used by
843 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
845 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
846 NL_SET_ERR_MSG_ATTR(extack,
847 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
848 "Invalid MPLS depth");
851 lse_index = depth - 1;
853 dissector_set_mpls_lse(key_val, lse_index);
854 dissector_set_mpls_lse(key_mask, lse_index);
856 lse_val = &key_val->ls[lse_index];
857 lse_mask = &key_mask->ls[lse_index];
859 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
860 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
861 lse_mask->mpls_ttl = MPLS_TTL_MASK;
863 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
864 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
866 if (bos & ~MPLS_BOS_MASK) {
867 NL_SET_ERR_MSG_ATTR(extack,
868 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
869 "Bottom Of Stack (BOS) must be 0 or 1");
872 lse_val->mpls_bos = bos;
873 lse_mask->mpls_bos = MPLS_BOS_MASK;
875 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
876 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
878 if (tc & ~MPLS_TC_MASK) {
879 NL_SET_ERR_MSG_ATTR(extack,
880 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
881 "Traffic Class (TC) must be between 0 and 7");
884 lse_val->mpls_tc = tc;
885 lse_mask->mpls_tc = MPLS_TC_MASK;
887 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
888 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
890 if (label & ~MPLS_LABEL_MASK) {
891 NL_SET_ERR_MSG_ATTR(extack,
892 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
893 "Label must be between 0 and 1048575");
896 lse_val->mpls_label = label;
897 lse_mask->mpls_label = MPLS_LABEL_MASK;
903 static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
904 struct flow_dissector_key_mpls *key_val,
905 struct flow_dissector_key_mpls *key_mask,
906 struct netlink_ext_ack *extack)
908 struct nlattr *nla_lse;
912 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
913 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
914 "NLA_F_NESTED is missing");
918 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
919 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
920 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
921 "Invalid MPLS option type");
925 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
930 NL_SET_ERR_MSG(extack,
931 "Bytes leftover after parsing MPLS options");
938 static int fl_set_key_mpls(struct nlattr **tb,
939 struct flow_dissector_key_mpls *key_val,
940 struct flow_dissector_key_mpls *key_mask,
941 struct netlink_ext_ack *extack)
943 struct flow_dissector_mpls_lse *lse_mask;
944 struct flow_dissector_mpls_lse *lse_val;
946 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
947 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
948 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
949 tb[TCA_FLOWER_KEY_MPLS_TC] ||
950 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
951 NL_SET_ERR_MSG_ATTR(extack,
952 tb[TCA_FLOWER_KEY_MPLS_OPTS],
953 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
957 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
958 key_val, key_mask, extack);
961 lse_val = &key_val->ls[0];
962 lse_mask = &key_mask->ls[0];
964 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
965 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
966 lse_mask->mpls_ttl = MPLS_TTL_MASK;
967 dissector_set_mpls_lse(key_val, 0);
968 dissector_set_mpls_lse(key_mask, 0);
970 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
971 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
973 if (bos & ~MPLS_BOS_MASK) {
974 NL_SET_ERR_MSG_ATTR(extack,
975 tb[TCA_FLOWER_KEY_MPLS_BOS],
976 "Bottom Of Stack (BOS) must be 0 or 1");
979 lse_val->mpls_bos = bos;
980 lse_mask->mpls_bos = MPLS_BOS_MASK;
981 dissector_set_mpls_lse(key_val, 0);
982 dissector_set_mpls_lse(key_mask, 0);
984 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
985 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
987 if (tc & ~MPLS_TC_MASK) {
988 NL_SET_ERR_MSG_ATTR(extack,
989 tb[TCA_FLOWER_KEY_MPLS_TC],
990 "Traffic Class (TC) must be between 0 and 7");
993 lse_val->mpls_tc = tc;
994 lse_mask->mpls_tc = MPLS_TC_MASK;
995 dissector_set_mpls_lse(key_val, 0);
996 dissector_set_mpls_lse(key_mask, 0);
998 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
999 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
1001 if (label & ~MPLS_LABEL_MASK) {
1002 NL_SET_ERR_MSG_ATTR(extack,
1003 tb[TCA_FLOWER_KEY_MPLS_LABEL],
1004 "Label must be between 0 and 1048575");
1007 lse_val->mpls_label = label;
1008 lse_mask->mpls_label = MPLS_LABEL_MASK;
1009 dissector_set_mpls_lse(key_val, 0);
1010 dissector_set_mpls_lse(key_mask, 0);
1015 static void fl_set_key_vlan(struct nlattr **tb,
1017 int vlan_id_key, int vlan_prio_key,
1018 int vlan_next_eth_type_key,
1019 struct flow_dissector_key_vlan *key_val,
1020 struct flow_dissector_key_vlan *key_mask)
1022 #define VLAN_PRIORITY_MASK 0x7
1024 if (tb[vlan_id_key]) {
1026 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
1027 key_mask->vlan_id = VLAN_VID_MASK;
1029 if (tb[vlan_prio_key]) {
1030 key_val->vlan_priority =
1031 nla_get_u8(tb[vlan_prio_key]) &
1033 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1036 key_val->vlan_tpid = ethertype;
1037 key_mask->vlan_tpid = cpu_to_be16(~0);
1039 if (tb[vlan_next_eth_type_key]) {
1040 key_val->vlan_eth_type =
1041 nla_get_be16(tb[vlan_next_eth_type_key]);
1042 key_mask->vlan_eth_type = cpu_to_be16(~0);
1046 static void fl_set_key_pppoe(struct nlattr **tb,
1047 struct flow_dissector_key_pppoe *key_val,
1048 struct flow_dissector_key_pppoe *key_mask,
1049 struct fl_flow_key *key,
1050 struct fl_flow_key *mask)
1052 /* key_val::type must be set to ETH_P_PPP_SES
1053 * because ETH_P_PPP_SES was stored in basic.n_proto
1054 * which might get overwritten by ppp_proto
1055 * or might be set to 0, the role of key_val::type
1056 * is simmilar to vlan_key::tpid
1058 key_val->type = htons(ETH_P_PPP_SES);
1059 key_mask->type = cpu_to_be16(~0);
1061 if (tb[TCA_FLOWER_KEY_PPPOE_SID]) {
1062 key_val->session_id =
1063 nla_get_be16(tb[TCA_FLOWER_KEY_PPPOE_SID]);
1064 key_mask->session_id = cpu_to_be16(~0);
1066 if (tb[TCA_FLOWER_KEY_PPP_PROTO]) {
1067 key_val->ppp_proto =
1068 nla_get_be16(tb[TCA_FLOWER_KEY_PPP_PROTO]);
1069 key_mask->ppp_proto = cpu_to_be16(~0);
1071 if (key_val->ppp_proto == htons(PPP_IP)) {
1072 key->basic.n_proto = htons(ETH_P_IP);
1073 mask->basic.n_proto = cpu_to_be16(~0);
1074 } else if (key_val->ppp_proto == htons(PPP_IPV6)) {
1075 key->basic.n_proto = htons(ETH_P_IPV6);
1076 mask->basic.n_proto = cpu_to_be16(~0);
1077 } else if (key_val->ppp_proto == htons(PPP_MPLS_UC)) {
1078 key->basic.n_proto = htons(ETH_P_MPLS_UC);
1079 mask->basic.n_proto = cpu_to_be16(~0);
1080 } else if (key_val->ppp_proto == htons(PPP_MPLS_MC)) {
1081 key->basic.n_proto = htons(ETH_P_MPLS_MC);
1082 mask->basic.n_proto = cpu_to_be16(~0);
1085 key->basic.n_proto = 0;
1086 mask->basic.n_proto = cpu_to_be16(0);
1090 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1091 u32 *dissector_key, u32 *dissector_mask,
1092 u32 flower_flag_bit, u32 dissector_flag_bit)
1094 if (flower_mask & flower_flag_bit) {
1095 *dissector_mask |= dissector_flag_bit;
1096 if (flower_key & flower_flag_bit)
1097 *dissector_key |= dissector_flag_bit;
1101 static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1102 u32 *flags_mask, struct netlink_ext_ack *extack)
1106 /* mask is mandatory for flags */
1107 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1108 NL_SET_ERR_MSG(extack, "Missing flags mask");
1112 key = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS]));
1113 mask = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
1118 fl_set_key_flag(key, mask, flags_key, flags_mask,
1119 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1120 fl_set_key_flag(key, mask, flags_key, flags_mask,
1121 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1122 FLOW_DIS_FIRST_FRAG);
1127 static void fl_set_key_ip(struct nlattr **tb, bool encap,
1128 struct flow_dissector_key_ip *key,
1129 struct flow_dissector_key_ip *mask)
1131 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1132 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1133 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1134 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1136 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1137 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
1140 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1141 int depth, int option_len,
1142 struct netlink_ext_ack *extack)
1144 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1145 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1146 struct geneve_opt *opt;
1147 int err, data_len = 0;
1149 if (option_len > sizeof(struct geneve_opt))
1150 data_len = option_len - sizeof(struct geneve_opt);
1152 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1153 memset(opt, 0xff, option_len);
1154 opt->length = data_len / 4;
1159 /* If no mask has been prodived we assume an exact match. */
1161 return sizeof(struct geneve_opt) + data_len;
1163 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1164 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1168 err = nla_parse_nested_deprecated(tb,
1169 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1170 nla, geneve_opt_policy, extack);
1174 /* We are not allowed to omit any of CLASS, TYPE or DATA
1175 * fields from the key.
1178 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1179 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1180 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1181 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1185 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1188 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1189 int new_len = key->enc_opts.len;
1191 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1192 data_len = nla_len(data);
1194 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1198 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1202 new_len += sizeof(struct geneve_opt) + data_len;
1203 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1204 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1205 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1208 opt->length = data_len / 4;
1209 memcpy(opt->opt_data, nla_data(data), data_len);
1212 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1213 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1214 opt->opt_class = nla_get_be16(class);
1217 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1218 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1219 opt->type = nla_get_u8(type);
1222 return sizeof(struct geneve_opt) + data_len;
1225 static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1226 int depth, int option_len,
1227 struct netlink_ext_ack *extack)
1229 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1230 struct vxlan_metadata *md;
1233 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1234 memset(md, 0xff, sizeof(*md));
1239 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1240 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1244 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1245 vxlan_opt_policy, extack);
1249 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1250 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1254 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1255 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
1256 md->gbp &= VXLAN_GBP_MASK;
1262 static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1263 int depth, int option_len,
1264 struct netlink_ext_ack *extack)
1266 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1267 struct erspan_metadata *md;
1270 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1271 memset(md, 0xff, sizeof(*md));
1277 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1278 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1282 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1283 erspan_opt_policy, extack);
1287 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1288 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1292 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1293 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1295 if (md->version == 1) {
1296 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1297 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1300 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1301 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1302 memset(&md->u, 0x00, sizeof(md->u));
1303 md->u.index = nla_get_be32(nla);
1305 } else if (md->version == 2) {
1306 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1307 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1308 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1311 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1312 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1313 md->u.md2.dir = nla_get_u8(nla);
1315 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1316 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1317 set_hwid(&md->u.md2, nla_get_u8(nla));
1320 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1327 static int fl_set_gtp_opt(const struct nlattr *nla, struct fl_flow_key *key,
1328 int depth, int option_len,
1329 struct netlink_ext_ack *extack)
1331 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1];
1332 struct gtp_pdu_session_info *sinfo;
1333 u8 len = key->enc_opts.len;
1336 sinfo = (struct gtp_pdu_session_info *)&key->enc_opts.data[len];
1337 memset(sinfo, 0xff, option_len);
1340 return sizeof(*sinfo);
1342 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GTP) {
1343 NL_SET_ERR_MSG_MOD(extack, "Non-gtp option type for mask");
1347 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GTP_MAX, nla,
1348 gtp_opt_policy, extack);
1353 (!tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] ||
1354 !tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])) {
1355 NL_SET_ERR_MSG_MOD(extack,
1356 "Missing tunnel key gtp option pdu type or qfi");
1360 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE])
1362 nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE]);
1364 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])
1365 sinfo->qfi = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI]);
1367 return sizeof(*sinfo);
1370 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1371 struct fl_flow_key *mask,
1372 struct netlink_ext_ack *extack)
1374 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1375 int err, option_len, key_depth, msk_depth = 0;
1377 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1378 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1379 enc_opts_policy, extack);
1383 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1385 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1386 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1387 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1388 enc_opts_policy, extack);
1392 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1393 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1394 if (!nla_ok(nla_opt_msk, msk_depth)) {
1395 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1400 nla_for_each_attr(nla_opt_key, nla_enc_key,
1401 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1402 switch (nla_type(nla_opt_key)) {
1403 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1404 if (key->enc_opts.dst_opt_type &&
1405 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1406 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1410 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1411 option_len = fl_set_geneve_opt(nla_opt_key, key,
1412 key_depth, option_len,
1417 key->enc_opts.len += option_len;
1418 /* At the same time we need to parse through the mask
1419 * in order to verify exact and mask attribute lengths.
1421 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1422 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1423 msk_depth, option_len,
1428 mask->enc_opts.len += option_len;
1429 if (key->enc_opts.len != mask->enc_opts.len) {
1430 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1434 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1435 if (key->enc_opts.dst_opt_type) {
1436 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1440 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1441 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1442 key_depth, option_len,
1447 key->enc_opts.len += option_len;
1448 /* At the same time we need to parse through the mask
1449 * in order to verify exact and mask attribute lengths.
1451 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1452 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1453 msk_depth, option_len,
1458 mask->enc_opts.len += option_len;
1459 if (key->enc_opts.len != mask->enc_opts.len) {
1460 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1464 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1465 if (key->enc_opts.dst_opt_type) {
1466 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1470 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1471 option_len = fl_set_erspan_opt(nla_opt_key, key,
1472 key_depth, option_len,
1477 key->enc_opts.len += option_len;
1478 /* At the same time we need to parse through the mask
1479 * in order to verify exact and mask attribute lengths.
1481 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1482 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1483 msk_depth, option_len,
1488 mask->enc_opts.len += option_len;
1489 if (key->enc_opts.len != mask->enc_opts.len) {
1490 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1494 case TCA_FLOWER_KEY_ENC_OPTS_GTP:
1495 if (key->enc_opts.dst_opt_type) {
1496 NL_SET_ERR_MSG_MOD(extack,
1497 "Duplicate type for gtp options");
1501 key->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1502 option_len = fl_set_gtp_opt(nla_opt_key, key,
1503 key_depth, option_len,
1508 key->enc_opts.len += option_len;
1509 /* At the same time we need to parse through the mask
1510 * in order to verify exact and mask attribute lengths.
1512 mask->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1513 option_len = fl_set_gtp_opt(nla_opt_msk, mask,
1514 msk_depth, option_len,
1519 mask->enc_opts.len += option_len;
1520 if (key->enc_opts.len != mask->enc_opts.len) {
1521 NL_SET_ERR_MSG_MOD(extack,
1522 "Key and mask miss aligned");
1527 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1534 if (!nla_ok(nla_opt_msk, msk_depth)) {
1535 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1538 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1544 static int fl_validate_ct_state(u16 state, struct nlattr *tb,
1545 struct netlink_ext_ack *extack)
1547 if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
1548 NL_SET_ERR_MSG_ATTR(extack, tb,
1549 "no trk, so no other flag can be set");
1553 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1554 state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
1555 NL_SET_ERR_MSG_ATTR(extack, tb,
1556 "new and est are mutually exclusive");
1560 if (state & TCA_FLOWER_KEY_CT_FLAGS_INVALID &&
1561 state & ~(TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
1562 TCA_FLOWER_KEY_CT_FLAGS_INVALID)) {
1563 NL_SET_ERR_MSG_ATTR(extack, tb,
1564 "when inv is set, only trk may be set");
1568 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1569 state & TCA_FLOWER_KEY_CT_FLAGS_REPLY) {
1570 NL_SET_ERR_MSG_ATTR(extack, tb,
1571 "new and rpl are mutually exclusive");
1578 static int fl_set_key_ct(struct nlattr **tb,
1579 struct flow_dissector_key_ct *key,
1580 struct flow_dissector_key_ct *mask,
1581 struct netlink_ext_ack *extack)
1583 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1586 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1587 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1590 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1591 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1592 sizeof(key->ct_state));
1594 err = fl_validate_ct_state(key->ct_state & mask->ct_state,
1595 tb[TCA_FLOWER_KEY_CT_STATE_MASK],
1601 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1602 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1603 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1606 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1607 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1608 sizeof(key->ct_zone));
1610 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1611 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1612 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1615 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1616 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1617 sizeof(key->ct_mark));
1619 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1620 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1621 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1624 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1625 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1626 sizeof(key->ct_labels));
1632 static bool is_vlan_key(struct nlattr *tb, __be16 *ethertype,
1633 struct fl_flow_key *key, struct fl_flow_key *mask,
1636 const bool good_num_of_vlans = key->num_of_vlans.num_of_vlans > vthresh;
1640 return good_num_of_vlans;
1643 *ethertype = nla_get_be16(tb);
1644 if (good_num_of_vlans || eth_type_vlan(*ethertype))
1647 key->basic.n_proto = *ethertype;
1648 mask->basic.n_proto = cpu_to_be16(~0);
1652 static int fl_set_key(struct net *net, struct nlattr **tb,
1653 struct fl_flow_key *key, struct fl_flow_key *mask,
1654 struct netlink_ext_ack *extack)
1659 if (tb[TCA_FLOWER_INDEV]) {
1660 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1663 key->meta.ingress_ifindex = err;
1664 mask->meta.ingress_ifindex = 0xffffffff;
1667 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1668 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1669 sizeof(key->eth.dst));
1670 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1671 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1672 sizeof(key->eth.src));
1673 fl_set_key_val(tb, &key->num_of_vlans,
1674 TCA_FLOWER_KEY_NUM_OF_VLANS,
1675 &mask->num_of_vlans,
1677 sizeof(key->num_of_vlans));
1679 if (is_vlan_key(tb[TCA_FLOWER_KEY_ETH_TYPE], ðertype, key, mask, 0)) {
1680 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1681 TCA_FLOWER_KEY_VLAN_PRIO,
1682 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1683 &key->vlan, &mask->vlan);
1685 if (is_vlan_key(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE],
1686 ðertype, key, mask, 1)) {
1687 fl_set_key_vlan(tb, ethertype,
1688 TCA_FLOWER_KEY_CVLAN_ID,
1689 TCA_FLOWER_KEY_CVLAN_PRIO,
1690 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1691 &key->cvlan, &mask->cvlan);
1692 fl_set_key_val(tb, &key->basic.n_proto,
1693 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1694 &mask->basic.n_proto,
1696 sizeof(key->basic.n_proto));
1700 if (key->basic.n_proto == htons(ETH_P_PPP_SES))
1701 fl_set_key_pppoe(tb, &key->pppoe, &mask->pppoe, key, mask);
1703 if (key->basic.n_proto == htons(ETH_P_IP) ||
1704 key->basic.n_proto == htons(ETH_P_IPV6)) {
1705 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1706 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1707 sizeof(key->basic.ip_proto));
1708 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1711 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1712 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1713 mask->control.addr_type = ~0;
1714 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1715 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1716 sizeof(key->ipv4.src));
1717 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1718 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1719 sizeof(key->ipv4.dst));
1720 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1721 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1722 mask->control.addr_type = ~0;
1723 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1724 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1725 sizeof(key->ipv6.src));
1726 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1727 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1728 sizeof(key->ipv6.dst));
1731 if (key->basic.ip_proto == IPPROTO_TCP) {
1732 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1733 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1734 sizeof(key->tp.src));
1735 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1736 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1737 sizeof(key->tp.dst));
1738 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1739 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1740 sizeof(key->tcp.flags));
1741 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1742 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1743 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1744 sizeof(key->tp.src));
1745 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1746 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1747 sizeof(key->tp.dst));
1748 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1749 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1750 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1751 sizeof(key->tp.src));
1752 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1753 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1754 sizeof(key->tp.dst));
1755 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1756 key->basic.ip_proto == IPPROTO_ICMP) {
1757 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1759 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1760 sizeof(key->icmp.type));
1761 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1763 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1764 sizeof(key->icmp.code));
1765 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1766 key->basic.ip_proto == IPPROTO_ICMPV6) {
1767 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1769 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1770 sizeof(key->icmp.type));
1771 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1773 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1774 sizeof(key->icmp.code));
1775 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1776 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1777 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1780 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1781 key->basic.n_proto == htons(ETH_P_RARP)) {
1782 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1783 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1784 sizeof(key->arp.sip));
1785 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1786 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1787 sizeof(key->arp.tip));
1788 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1789 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1790 sizeof(key->arp.op));
1791 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1792 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1793 sizeof(key->arp.sha));
1794 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1795 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1796 sizeof(key->arp.tha));
1797 } else if (key->basic.ip_proto == IPPROTO_L2TP) {
1798 fl_set_key_val(tb, &key->l2tpv3.session_id,
1799 TCA_FLOWER_KEY_L2TPV3_SID,
1800 &mask->l2tpv3.session_id, TCA_FLOWER_UNSPEC,
1801 sizeof(key->l2tpv3.session_id));
1804 if (key->basic.ip_proto == IPPROTO_TCP ||
1805 key->basic.ip_proto == IPPROTO_UDP ||
1806 key->basic.ip_proto == IPPROTO_SCTP) {
1807 ret = fl_set_key_port_range(tb, key, mask, extack);
1812 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1813 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1814 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1815 mask->enc_control.addr_type = ~0;
1816 fl_set_key_val(tb, &key->enc_ipv4.src,
1817 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1818 &mask->enc_ipv4.src,
1819 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1820 sizeof(key->enc_ipv4.src));
1821 fl_set_key_val(tb, &key->enc_ipv4.dst,
1822 TCA_FLOWER_KEY_ENC_IPV4_DST,
1823 &mask->enc_ipv4.dst,
1824 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1825 sizeof(key->enc_ipv4.dst));
1828 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1829 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1830 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1831 mask->enc_control.addr_type = ~0;
1832 fl_set_key_val(tb, &key->enc_ipv6.src,
1833 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1834 &mask->enc_ipv6.src,
1835 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1836 sizeof(key->enc_ipv6.src));
1837 fl_set_key_val(tb, &key->enc_ipv6.dst,
1838 TCA_FLOWER_KEY_ENC_IPV6_DST,
1839 &mask->enc_ipv6.dst,
1840 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1841 sizeof(key->enc_ipv6.dst));
1844 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1845 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1846 sizeof(key->enc_key_id.keyid));
1848 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1849 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1850 sizeof(key->enc_tp.src));
1852 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1853 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1854 sizeof(key->enc_tp.dst));
1856 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1858 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1859 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1860 sizeof(key->hash.hash));
1862 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1863 ret = fl_set_enc_opt(tb, key, mask, extack);
1868 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1872 if (tb[TCA_FLOWER_KEY_FLAGS])
1873 ret = fl_set_key_flags(tb, &key->control.flags,
1874 &mask->control.flags, extack);
1879 static void fl_mask_copy(struct fl_flow_mask *dst,
1880 struct fl_flow_mask *src)
1882 const void *psrc = fl_key_get_start(&src->key, src);
1883 void *pdst = fl_key_get_start(&dst->key, src);
1885 memcpy(pdst, psrc, fl_mask_range(src));
1886 dst->range = src->range;
1889 static const struct rhashtable_params fl_ht_params = {
1890 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1891 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1892 .automatic_shrinking = true,
1895 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1897 mask->filter_ht_params = fl_ht_params;
1898 mask->filter_ht_params.key_len = fl_mask_range(mask);
1899 mask->filter_ht_params.key_offset += mask->range.start;
1901 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1904 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1905 #define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
1907 #define FL_KEY_IS_MASKED(mask, member) \
1908 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1909 0, FL_KEY_MEMBER_SIZE(member)) \
1911 #define FL_KEY_SET(keys, cnt, id, member) \
1913 keys[cnt].key_id = id; \
1914 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1918 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1920 if (FL_KEY_IS_MASKED(mask, member)) \
1921 FL_KEY_SET(keys, cnt, id, member); \
1924 static void fl_init_dissector(struct flow_dissector *dissector,
1925 struct fl_flow_key *mask)
1927 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1930 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1931 FLOW_DISSECTOR_KEY_META, meta);
1932 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1933 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1934 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1935 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1936 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1937 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1938 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1939 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1940 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1941 FLOW_DISSECTOR_KEY_PORTS, tp);
1942 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1943 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
1944 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1945 FLOW_DISSECTOR_KEY_IP, ip);
1946 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1947 FLOW_DISSECTOR_KEY_TCP, tcp);
1948 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1949 FLOW_DISSECTOR_KEY_ICMP, icmp);
1950 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1951 FLOW_DISSECTOR_KEY_ARP, arp);
1952 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1953 FLOW_DISSECTOR_KEY_MPLS, mpls);
1954 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1955 FLOW_DISSECTOR_KEY_VLAN, vlan);
1956 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1957 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1958 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1959 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1960 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1961 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1962 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1963 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1964 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1965 FL_KEY_IS_MASKED(mask, enc_ipv6))
1966 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1968 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1969 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1970 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1971 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1972 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1973 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1974 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1975 FLOW_DISSECTOR_KEY_CT, ct);
1976 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1977 FLOW_DISSECTOR_KEY_HASH, hash);
1978 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1979 FLOW_DISSECTOR_KEY_NUM_OF_VLANS, num_of_vlans);
1980 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1981 FLOW_DISSECTOR_KEY_PPPOE, pppoe);
1982 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1983 FLOW_DISSECTOR_KEY_L2TPV3, l2tpv3);
1985 skb_flow_dissector_init(dissector, keys, cnt);
1988 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1989 struct fl_flow_mask *mask)
1991 struct fl_flow_mask *newmask;
1994 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1996 return ERR_PTR(-ENOMEM);
1998 fl_mask_copy(newmask, mask);
2000 if ((newmask->key.tp_range.tp_min.dst &&
2001 newmask->key.tp_range.tp_max.dst) ||
2002 (newmask->key.tp_range.tp_min.src &&
2003 newmask->key.tp_range.tp_max.src))
2004 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
2006 err = fl_init_mask_hashtable(newmask);
2010 fl_init_dissector(&newmask->dissector, &newmask->key);
2012 INIT_LIST_HEAD_RCU(&newmask->filters);
2014 refcount_set(&newmask->refcnt, 1);
2015 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
2016 &newmask->ht_node, mask_ht_params);
2018 goto errout_destroy;
2020 spin_lock(&head->masks_lock);
2021 list_add_tail_rcu(&newmask->list, &head->masks);
2022 spin_unlock(&head->masks_lock);
2027 rhashtable_destroy(&newmask->ht);
2031 return ERR_PTR(err);
2034 static int fl_check_assign_mask(struct cls_fl_head *head,
2035 struct cls_fl_filter *fnew,
2036 struct cls_fl_filter *fold,
2037 struct fl_flow_mask *mask)
2039 struct fl_flow_mask *newmask;
2044 /* Insert mask as temporary node to prevent concurrent creation of mask
2045 * with same key. Any concurrent lookups with same key will return
2046 * -EAGAIN because mask's refcnt is zero.
2048 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
2056 goto errout_cleanup;
2059 newmask = fl_create_new_mask(head, mask);
2060 if (IS_ERR(newmask)) {
2061 ret = PTR_ERR(newmask);
2062 goto errout_cleanup;
2065 fnew->mask = newmask;
2067 } else if (IS_ERR(fnew->mask)) {
2068 ret = PTR_ERR(fnew->mask);
2069 } else if (fold && fold->mask != fnew->mask) {
2071 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
2072 /* Mask was deleted concurrently, try again */
2079 rhashtable_remove_fast(&head->ht, &mask->ht_node,
2084 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
2085 struct cls_fl_filter *f, struct fl_flow_mask *mask,
2086 unsigned long base, struct nlattr **tb,
2088 struct fl_flow_tmplt *tmplt,
2089 u32 flags, u32 fl_flags,
2090 struct netlink_ext_ack *extack)
2094 err = tcf_exts_validate_ex(net, tp, tb, est, &f->exts, flags,
2099 if (tb[TCA_FLOWER_CLASSID]) {
2100 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
2101 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2103 tcf_bind_filter(tp, &f->res, base);
2104 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2108 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
2112 fl_mask_update_range(mask);
2113 fl_set_masked_key(&f->mkey, &f->key, mask);
2115 if (!fl_mask_fits_tmplt(tmplt, mask)) {
2116 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
2123 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
2124 struct cls_fl_filter *fold,
2127 struct fl_flow_mask *mask = fnew->mask;
2130 err = rhashtable_lookup_insert_fast(&mask->ht,
2132 mask->filter_ht_params);
2135 /* It is okay if filter with same key exists when
2138 return fold && err == -EEXIST ? 0 : err;
2145 static int fl_change(struct net *net, struct sk_buff *in_skb,
2146 struct tcf_proto *tp, unsigned long base,
2147 u32 handle, struct nlattr **tca,
2148 void **arg, u32 flags,
2149 struct netlink_ext_ack *extack)
2151 struct cls_fl_head *head = fl_head_dereference(tp);
2152 bool rtnl_held = !(flags & TCA_ACT_FLAGS_NO_RTNL);
2153 struct cls_fl_filter *fold = *arg;
2154 struct cls_fl_filter *fnew;
2155 struct fl_flow_mask *mask;
2160 if (!tca[TCA_OPTIONS]) {
2165 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
2171 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2174 goto errout_mask_alloc;
2177 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2178 tca[TCA_OPTIONS], fl_policy, NULL);
2182 if (fold && handle && fold->handle != handle) {
2187 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
2192 INIT_LIST_HEAD(&fnew->hw_list);
2193 refcount_set(&fnew->refcnt, 1);
2195 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
2199 if (tb[TCA_FLOWER_FLAGS]) {
2200 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
2202 if (!tc_flags_valid(fnew->flags)) {
2208 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE],
2209 tp->chain->tmplt_priv, flags, fnew->flags,
2214 err = fl_check_assign_mask(head, fnew, fold, mask);
2218 err = fl_ht_insert_unique(fnew, fold, &in_ht);
2222 if (!tc_skip_hw(fnew->flags)) {
2223 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
2228 if (!tc_in_hw(fnew->flags))
2229 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2231 spin_lock(&tp->lock);
2233 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2234 * proto again or create new one, if necessary.
2242 /* Fold filter was deleted concurrently. Retry lookup. */
2243 if (fold->deleted) {
2248 fnew->handle = handle;
2251 struct rhashtable_params params =
2252 fnew->mask->filter_ht_params;
2254 err = rhashtable_insert_fast(&fnew->mask->ht,
2262 refcount_inc(&fnew->refcnt);
2263 rhashtable_remove_fast(&fold->mask->ht,
2265 fold->mask->filter_ht_params);
2266 idr_replace(&head->handle_idr, fnew, fnew->handle);
2267 list_replace_rcu(&fold->list, &fnew->list);
2268 fold->deleted = true;
2270 spin_unlock(&tp->lock);
2272 fl_mask_put(head, fold->mask);
2273 if (!tc_skip_hw(fold->flags))
2274 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
2275 tcf_unbind_filter(tp, &fold->res);
2276 /* Caller holds reference to fold, so refcnt is always > 0
2279 refcount_dec(&fold->refcnt);
2283 /* user specifies a handle and it doesn't exist */
2284 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2285 handle, GFP_ATOMIC);
2287 /* Filter with specified handle was concurrently
2288 * inserted after initial check in cls_api. This is not
2289 * necessarily an error if NLM_F_EXCL is not set in
2290 * message flags. Returning EAGAIN will cause cls_api to
2291 * try to update concurrently inserted rule.
2297 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2298 INT_MAX, GFP_ATOMIC);
2303 refcount_inc(&fnew->refcnt);
2304 fnew->handle = handle;
2305 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
2306 spin_unlock(&tp->lock);
2312 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2316 spin_lock(&tp->lock);
2318 fnew->deleted = true;
2319 spin_unlock(&tp->lock);
2320 if (!tc_skip_hw(fnew->flags))
2321 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
2323 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2324 fnew->mask->filter_ht_params);
2326 fl_mask_put(head, fnew->mask);
2332 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2339 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
2340 bool rtnl_held, struct netlink_ext_ack *extack)
2342 struct cls_fl_head *head = fl_head_dereference(tp);
2343 struct cls_fl_filter *f = arg;
2347 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
2348 *last = list_empty(&head->masks);
2354 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2357 struct cls_fl_head *head = fl_head_dereference(tp);
2358 unsigned long id = arg->cookie, tmp;
2359 struct cls_fl_filter *f;
2361 arg->count = arg->skip;
2364 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2365 /* don't return filters that are being deleted */
2366 if (!refcount_inc_not_zero(&f->refcnt))
2370 if (arg->fn(tp, f, arg) < 0) {
2384 static struct cls_fl_filter *
2385 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2387 struct cls_fl_head *head = fl_head_dereference(tp);
2389 spin_lock(&tp->lock);
2390 if (list_empty(&head->hw_filters)) {
2391 spin_unlock(&tp->lock);
2396 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2398 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2399 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2400 spin_unlock(&tp->lock);
2405 spin_unlock(&tp->lock);
2409 static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
2410 void *cb_priv, struct netlink_ext_ack *extack)
2412 struct tcf_block *block = tp->chain->block;
2413 struct flow_cls_offload cls_flower = {};
2414 struct cls_fl_filter *f = NULL;
2417 /* hw_filters list can only be changed by hw offload functions after
2418 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2423 while ((f = fl_get_next_hw_filter(tp, f, add))) {
2425 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2426 if (!cls_flower.rule) {
2431 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
2433 cls_flower.command = add ?
2434 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
2435 cls_flower.cookie = (unsigned long)f;
2436 cls_flower.rule->match.dissector = &f->mask->dissector;
2437 cls_flower.rule->match.mask = &f->mask->key;
2438 cls_flower.rule->match.key = &f->mkey;
2440 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
2441 cls_flower.common.extack);
2443 kfree(cls_flower.rule);
2444 if (tc_skip_sw(f->flags)) {
2451 cls_flower.classid = f->res.classid;
2453 err = tc_setup_cb_reoffload(block, tp, add, cb,
2454 TC_SETUP_CLSFLOWER, &cls_flower,
2457 tc_cleanup_offload_action(&cls_flower.rule->action);
2458 kfree(cls_flower.rule);
2471 static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2473 struct flow_cls_offload *cls_flower = type_data;
2474 struct cls_fl_filter *f =
2475 (struct cls_fl_filter *) cls_flower->cookie;
2476 struct cls_fl_head *head = fl_head_dereference(tp);
2478 spin_lock(&tp->lock);
2479 list_add(&f->hw_list, &head->hw_filters);
2480 spin_unlock(&tp->lock);
2483 static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2485 struct flow_cls_offload *cls_flower = type_data;
2486 struct cls_fl_filter *f =
2487 (struct cls_fl_filter *) cls_flower->cookie;
2489 spin_lock(&tp->lock);
2490 if (!list_empty(&f->hw_list))
2491 list_del_init(&f->hw_list);
2492 spin_unlock(&tp->lock);
2495 static int fl_hw_create_tmplt(struct tcf_chain *chain,
2496 struct fl_flow_tmplt *tmplt)
2498 struct flow_cls_offload cls_flower = {};
2499 struct tcf_block *block = chain->block;
2501 cls_flower.rule = flow_rule_alloc(0);
2502 if (!cls_flower.rule)
2505 cls_flower.common.chain_index = chain->index;
2506 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2507 cls_flower.cookie = (unsigned long) tmplt;
2508 cls_flower.rule->match.dissector = &tmplt->dissector;
2509 cls_flower.rule->match.mask = &tmplt->mask;
2510 cls_flower.rule->match.key = &tmplt->dummy_key;
2512 /* We don't care if driver (any of them) fails to handle this
2513 * call. It serves just as a hint for it.
2515 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2516 kfree(cls_flower.rule);
2521 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2522 struct fl_flow_tmplt *tmplt)
2524 struct flow_cls_offload cls_flower = {};
2525 struct tcf_block *block = chain->block;
2527 cls_flower.common.chain_index = chain->index;
2528 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2529 cls_flower.cookie = (unsigned long) tmplt;
2531 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2534 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2535 struct nlattr **tca,
2536 struct netlink_ext_ack *extack)
2538 struct fl_flow_tmplt *tmplt;
2542 if (!tca[TCA_OPTIONS])
2543 return ERR_PTR(-EINVAL);
2545 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2547 return ERR_PTR(-ENOBUFS);
2548 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2549 tca[TCA_OPTIONS], fl_policy, NULL);
2553 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2558 tmplt->chain = chain;
2559 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2563 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2565 err = fl_hw_create_tmplt(chain, tmplt);
2576 return ERR_PTR(err);
2579 static void fl_tmplt_destroy(void *tmplt_priv)
2581 struct fl_flow_tmplt *tmplt = tmplt_priv;
2583 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2587 static int fl_dump_key_val(struct sk_buff *skb,
2588 void *val, int val_type,
2589 void *mask, int mask_type, int len)
2593 if (!memchr_inv(mask, 0, len))
2595 err = nla_put(skb, val_type, len, val);
2598 if (mask_type != TCA_FLOWER_UNSPEC) {
2599 err = nla_put(skb, mask_type, len, mask);
2606 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2607 struct fl_flow_key *mask)
2609 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2610 TCA_FLOWER_KEY_PORT_DST_MIN,
2611 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2612 sizeof(key->tp_range.tp_min.dst)) ||
2613 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2614 TCA_FLOWER_KEY_PORT_DST_MAX,
2615 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2616 sizeof(key->tp_range.tp_max.dst)) ||
2617 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2618 TCA_FLOWER_KEY_PORT_SRC_MIN,
2619 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2620 sizeof(key->tp_range.tp_min.src)) ||
2621 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2622 TCA_FLOWER_KEY_PORT_SRC_MAX,
2623 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2624 sizeof(key->tp_range.tp_max.src)))
2630 static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2631 struct flow_dissector_key_mpls *mpls_key,
2632 struct flow_dissector_key_mpls *mpls_mask,
2635 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2636 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2639 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2644 if (lse_mask->mpls_ttl) {
2645 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2650 if (lse_mask->mpls_bos) {
2651 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2656 if (lse_mask->mpls_tc) {
2657 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2662 if (lse_mask->mpls_label) {
2663 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2664 lse_key->mpls_label);
2672 static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2673 struct flow_dissector_key_mpls *mpls_key,
2674 struct flow_dissector_key_mpls *mpls_mask)
2676 struct nlattr *opts;
2681 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2685 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2686 if (!(mpls_mask->used_lses & 1 << lse_index))
2689 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2695 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2699 nla_nest_end(skb, lse);
2701 nla_nest_end(skb, opts);
2706 nla_nest_cancel(skb, lse);
2708 nla_nest_cancel(skb, opts);
2713 static int fl_dump_key_mpls(struct sk_buff *skb,
2714 struct flow_dissector_key_mpls *mpls_key,
2715 struct flow_dissector_key_mpls *mpls_mask)
2717 struct flow_dissector_mpls_lse *lse_mask;
2718 struct flow_dissector_mpls_lse *lse_key;
2721 if (!mpls_mask->used_lses)
2724 lse_mask = &mpls_mask->ls[0];
2725 lse_key = &mpls_key->ls[0];
2727 /* For backward compatibility, don't use the MPLS nested attributes if
2728 * the rule can be expressed using the old attributes.
2730 if (mpls_mask->used_lses & ~1 ||
2731 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2732 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2733 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2735 if (lse_mask->mpls_ttl) {
2736 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2741 if (lse_mask->mpls_tc) {
2742 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2747 if (lse_mask->mpls_label) {
2748 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2749 lse_key->mpls_label);
2753 if (lse_mask->mpls_bos) {
2754 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2762 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2763 struct flow_dissector_key_ip *key,
2764 struct flow_dissector_key_ip *mask)
2766 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2767 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2768 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2769 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2771 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2772 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2778 static int fl_dump_key_vlan(struct sk_buff *skb,
2779 int vlan_id_key, int vlan_prio_key,
2780 struct flow_dissector_key_vlan *vlan_key,
2781 struct flow_dissector_key_vlan *vlan_mask)
2785 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2787 if (vlan_mask->vlan_id) {
2788 err = nla_put_u16(skb, vlan_id_key,
2793 if (vlan_mask->vlan_priority) {
2794 err = nla_put_u8(skb, vlan_prio_key,
2795 vlan_key->vlan_priority);
2802 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2803 u32 *flower_key, u32 *flower_mask,
2804 u32 flower_flag_bit, u32 dissector_flag_bit)
2806 if (dissector_mask & dissector_flag_bit) {
2807 *flower_mask |= flower_flag_bit;
2808 if (dissector_key & dissector_flag_bit)
2809 *flower_key |= flower_flag_bit;
2813 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2819 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2825 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2826 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2827 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2828 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2829 FLOW_DIS_FIRST_FRAG);
2831 _key = cpu_to_be32(key);
2832 _mask = cpu_to_be32(mask);
2834 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2838 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2841 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2842 struct flow_dissector_key_enc_opts *enc_opts)
2844 struct geneve_opt *opt;
2845 struct nlattr *nest;
2848 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2850 goto nla_put_failure;
2852 while (enc_opts->len > opt_off) {
2853 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2855 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2857 goto nla_put_failure;
2858 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2860 goto nla_put_failure;
2861 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2862 opt->length * 4, opt->opt_data))
2863 goto nla_put_failure;
2865 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2867 nla_nest_end(skb, nest);
2871 nla_nest_cancel(skb, nest);
2875 static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2876 struct flow_dissector_key_enc_opts *enc_opts)
2878 struct vxlan_metadata *md;
2879 struct nlattr *nest;
2881 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2883 goto nla_put_failure;
2885 md = (struct vxlan_metadata *)&enc_opts->data[0];
2886 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2887 goto nla_put_failure;
2889 nla_nest_end(skb, nest);
2893 nla_nest_cancel(skb, nest);
2897 static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2898 struct flow_dissector_key_enc_opts *enc_opts)
2900 struct erspan_metadata *md;
2901 struct nlattr *nest;
2903 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2905 goto nla_put_failure;
2907 md = (struct erspan_metadata *)&enc_opts->data[0];
2908 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2909 goto nla_put_failure;
2911 if (md->version == 1 &&
2912 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2913 goto nla_put_failure;
2915 if (md->version == 2 &&
2916 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2918 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2919 get_hwid(&md->u.md2))))
2920 goto nla_put_failure;
2922 nla_nest_end(skb, nest);
2926 nla_nest_cancel(skb, nest);
2930 static int fl_dump_key_gtp_opt(struct sk_buff *skb,
2931 struct flow_dissector_key_enc_opts *enc_opts)
2934 struct gtp_pdu_session_info *session_info;
2935 struct nlattr *nest;
2937 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GTP);
2939 goto nla_put_failure;
2941 session_info = (struct gtp_pdu_session_info *)&enc_opts->data[0];
2943 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE,
2944 session_info->pdu_type))
2945 goto nla_put_failure;
2947 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_QFI, session_info->qfi))
2948 goto nla_put_failure;
2950 nla_nest_end(skb, nest);
2954 nla_nest_cancel(skb, nest);
2958 static int fl_dump_key_ct(struct sk_buff *skb,
2959 struct flow_dissector_key_ct *key,
2960 struct flow_dissector_key_ct *mask)
2962 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2963 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2964 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2965 sizeof(key->ct_state)))
2966 goto nla_put_failure;
2968 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2969 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2970 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2971 sizeof(key->ct_zone)))
2972 goto nla_put_failure;
2974 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2975 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2976 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2977 sizeof(key->ct_mark)))
2978 goto nla_put_failure;
2980 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2981 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2982 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2983 sizeof(key->ct_labels)))
2984 goto nla_put_failure;
2992 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2993 struct flow_dissector_key_enc_opts *enc_opts)
2995 struct nlattr *nest;
3001 nest = nla_nest_start_noflag(skb, enc_opt_type);
3003 goto nla_put_failure;
3005 switch (enc_opts->dst_opt_type) {
3006 case TUNNEL_GENEVE_OPT:
3007 err = fl_dump_key_geneve_opt(skb, enc_opts);
3009 goto nla_put_failure;
3011 case TUNNEL_VXLAN_OPT:
3012 err = fl_dump_key_vxlan_opt(skb, enc_opts);
3014 goto nla_put_failure;
3016 case TUNNEL_ERSPAN_OPT:
3017 err = fl_dump_key_erspan_opt(skb, enc_opts);
3019 goto nla_put_failure;
3021 case TUNNEL_GTP_OPT:
3022 err = fl_dump_key_gtp_opt(skb, enc_opts);
3024 goto nla_put_failure;
3027 goto nla_put_failure;
3029 nla_nest_end(skb, nest);
3033 nla_nest_cancel(skb, nest);
3037 static int fl_dump_key_enc_opt(struct sk_buff *skb,
3038 struct flow_dissector_key_enc_opts *key_opts,
3039 struct flow_dissector_key_enc_opts *msk_opts)
3043 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
3047 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
3050 static int fl_dump_key(struct sk_buff *skb, struct net *net,
3051 struct fl_flow_key *key, struct fl_flow_key *mask)
3053 if (mask->meta.ingress_ifindex) {
3054 struct net_device *dev;
3056 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
3057 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
3058 goto nla_put_failure;
3061 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
3062 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
3063 sizeof(key->eth.dst)) ||
3064 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
3065 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
3066 sizeof(key->eth.src)) ||
3067 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
3068 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
3069 sizeof(key->basic.n_proto)))
3070 goto nla_put_failure;
3072 if (mask->num_of_vlans.num_of_vlans) {
3073 if (nla_put_u8(skb, TCA_FLOWER_KEY_NUM_OF_VLANS, key->num_of_vlans.num_of_vlans))
3074 goto nla_put_failure;
3077 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
3078 goto nla_put_failure;
3080 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
3081 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
3082 goto nla_put_failure;
3084 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
3085 TCA_FLOWER_KEY_CVLAN_PRIO,
3086 &key->cvlan, &mask->cvlan) ||
3087 (mask->cvlan.vlan_tpid &&
3088 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3089 key->cvlan.vlan_tpid)))
3090 goto nla_put_failure;
3092 if (mask->basic.n_proto) {
3093 if (mask->cvlan.vlan_eth_type) {
3094 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
3095 key->basic.n_proto))
3096 goto nla_put_failure;
3097 } else if (mask->vlan.vlan_eth_type) {
3098 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3099 key->vlan.vlan_eth_type))
3100 goto nla_put_failure;
3104 if ((key->basic.n_proto == htons(ETH_P_IP) ||
3105 key->basic.n_proto == htons(ETH_P_IPV6)) &&
3106 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
3107 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
3108 sizeof(key->basic.ip_proto)) ||
3109 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
3110 goto nla_put_failure;
3112 if (mask->pppoe.session_id) {
3113 if (nla_put_be16(skb, TCA_FLOWER_KEY_PPPOE_SID,
3114 key->pppoe.session_id))
3115 goto nla_put_failure;
3117 if (mask->basic.n_proto && mask->pppoe.ppp_proto) {
3118 if (nla_put_be16(skb, TCA_FLOWER_KEY_PPP_PROTO,
3119 key->pppoe.ppp_proto))
3120 goto nla_put_failure;
3123 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3124 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
3125 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
3126 sizeof(key->ipv4.src)) ||
3127 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
3128 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
3129 sizeof(key->ipv4.dst))))
3130 goto nla_put_failure;
3131 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3132 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
3133 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
3134 sizeof(key->ipv6.src)) ||
3135 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
3136 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
3137 sizeof(key->ipv6.dst))))
3138 goto nla_put_failure;
3140 if (key->basic.ip_proto == IPPROTO_TCP &&
3141 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
3142 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
3143 sizeof(key->tp.src)) ||
3144 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
3145 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
3146 sizeof(key->tp.dst)) ||
3147 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
3148 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
3149 sizeof(key->tcp.flags))))
3150 goto nla_put_failure;
3151 else if (key->basic.ip_proto == IPPROTO_UDP &&
3152 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
3153 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
3154 sizeof(key->tp.src)) ||
3155 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
3156 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
3157 sizeof(key->tp.dst))))
3158 goto nla_put_failure;
3159 else if (key->basic.ip_proto == IPPROTO_SCTP &&
3160 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
3161 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
3162 sizeof(key->tp.src)) ||
3163 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
3164 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
3165 sizeof(key->tp.dst))))
3166 goto nla_put_failure;
3167 else if (key->basic.n_proto == htons(ETH_P_IP) &&
3168 key->basic.ip_proto == IPPROTO_ICMP &&
3169 (fl_dump_key_val(skb, &key->icmp.type,
3170 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
3171 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
3172 sizeof(key->icmp.type)) ||
3173 fl_dump_key_val(skb, &key->icmp.code,
3174 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
3175 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
3176 sizeof(key->icmp.code))))
3177 goto nla_put_failure;
3178 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
3179 key->basic.ip_proto == IPPROTO_ICMPV6 &&
3180 (fl_dump_key_val(skb, &key->icmp.type,
3181 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
3182 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
3183 sizeof(key->icmp.type)) ||
3184 fl_dump_key_val(skb, &key->icmp.code,
3185 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
3186 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
3187 sizeof(key->icmp.code))))
3188 goto nla_put_failure;
3189 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
3190 key->basic.n_proto == htons(ETH_P_RARP)) &&
3191 (fl_dump_key_val(skb, &key->arp.sip,
3192 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
3193 TCA_FLOWER_KEY_ARP_SIP_MASK,
3194 sizeof(key->arp.sip)) ||
3195 fl_dump_key_val(skb, &key->arp.tip,
3196 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
3197 TCA_FLOWER_KEY_ARP_TIP_MASK,
3198 sizeof(key->arp.tip)) ||
3199 fl_dump_key_val(skb, &key->arp.op,
3200 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
3201 TCA_FLOWER_KEY_ARP_OP_MASK,
3202 sizeof(key->arp.op)) ||
3203 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
3204 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
3205 sizeof(key->arp.sha)) ||
3206 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
3207 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
3208 sizeof(key->arp.tha))))
3209 goto nla_put_failure;
3210 else if (key->basic.ip_proto == IPPROTO_L2TP &&
3211 fl_dump_key_val(skb, &key->l2tpv3.session_id,
3212 TCA_FLOWER_KEY_L2TPV3_SID,
3213 &mask->l2tpv3.session_id,
3215 sizeof(key->l2tpv3.session_id)))
3216 goto nla_put_failure;
3218 if ((key->basic.ip_proto == IPPROTO_TCP ||
3219 key->basic.ip_proto == IPPROTO_UDP ||
3220 key->basic.ip_proto == IPPROTO_SCTP) &&
3221 fl_dump_key_port_range(skb, key, mask))
3222 goto nla_put_failure;
3224 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3225 (fl_dump_key_val(skb, &key->enc_ipv4.src,
3226 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
3227 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
3228 sizeof(key->enc_ipv4.src)) ||
3229 fl_dump_key_val(skb, &key->enc_ipv4.dst,
3230 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
3231 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
3232 sizeof(key->enc_ipv4.dst))))
3233 goto nla_put_failure;
3234 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3235 (fl_dump_key_val(skb, &key->enc_ipv6.src,
3236 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
3237 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
3238 sizeof(key->enc_ipv6.src)) ||
3239 fl_dump_key_val(skb, &key->enc_ipv6.dst,
3240 TCA_FLOWER_KEY_ENC_IPV6_DST,
3241 &mask->enc_ipv6.dst,
3242 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
3243 sizeof(key->enc_ipv6.dst))))
3244 goto nla_put_failure;
3246 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
3247 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
3248 sizeof(key->enc_key_id)) ||
3249 fl_dump_key_val(skb, &key->enc_tp.src,
3250 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
3252 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
3253 sizeof(key->enc_tp.src)) ||
3254 fl_dump_key_val(skb, &key->enc_tp.dst,
3255 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
3257 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
3258 sizeof(key->enc_tp.dst)) ||
3259 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
3260 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
3261 goto nla_put_failure;
3263 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
3264 goto nla_put_failure;
3266 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
3267 goto nla_put_failure;
3269 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
3270 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
3271 sizeof(key->hash.hash)))
3272 goto nla_put_failure;
3280 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
3281 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3283 struct cls_fl_filter *f = fh;
3284 struct nlattr *nest;
3285 struct fl_flow_key *key, *mask;
3291 t->tcm_handle = f->handle;
3293 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3295 goto nla_put_failure;
3297 spin_lock(&tp->lock);
3299 if (f->res.classid &&
3300 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3301 goto nla_put_failure_locked;
3304 mask = &f->mask->key;
3305 skip_hw = tc_skip_hw(f->flags);
3307 if (fl_dump_key(skb, net, key, mask))
3308 goto nla_put_failure_locked;
3310 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3311 goto nla_put_failure_locked;
3313 spin_unlock(&tp->lock);
3316 fl_hw_update_stats(tp, f, rtnl_held);
3318 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3319 goto nla_put_failure;
3321 if (tcf_exts_dump(skb, &f->exts))
3322 goto nla_put_failure;
3324 nla_nest_end(skb, nest);
3326 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3327 goto nla_put_failure;
3331 nla_put_failure_locked:
3332 spin_unlock(&tp->lock);
3334 nla_nest_cancel(skb, nest);
3338 static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3339 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3341 struct cls_fl_filter *f = fh;
3342 struct nlattr *nest;
3348 t->tcm_handle = f->handle;
3350 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3352 goto nla_put_failure;
3354 spin_lock(&tp->lock);
3356 skip_hw = tc_skip_hw(f->flags);
3358 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3359 goto nla_put_failure_locked;
3361 spin_unlock(&tp->lock);
3364 fl_hw_update_stats(tp, f, rtnl_held);
3366 if (tcf_exts_terse_dump(skb, &f->exts))
3367 goto nla_put_failure;
3369 nla_nest_end(skb, nest);
3373 nla_put_failure_locked:
3374 spin_unlock(&tp->lock);
3376 nla_nest_cancel(skb, nest);
3380 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3382 struct fl_flow_tmplt *tmplt = tmplt_priv;
3383 struct fl_flow_key *key, *mask;
3384 struct nlattr *nest;
3386 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3388 goto nla_put_failure;
3390 key = &tmplt->dummy_key;
3391 mask = &tmplt->mask;
3393 if (fl_dump_key(skb, net, key, mask))
3394 goto nla_put_failure;
3396 nla_nest_end(skb, nest);
3401 nla_nest_cancel(skb, nest);
3405 static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3408 struct cls_fl_filter *f = fh;
3410 tc_cls_bind_class(classid, cl, q, &f->res, base);
3413 static bool fl_delete_empty(struct tcf_proto *tp)
3415 struct cls_fl_head *head = fl_head_dereference(tp);
3417 spin_lock(&tp->lock);
3418 tp->deleting = idr_is_empty(&head->handle_idr);
3419 spin_unlock(&tp->lock);
3421 return tp->deleting;
3424 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3426 .classify = fl_classify,
3428 .destroy = fl_destroy,
3431 .change = fl_change,
3432 .delete = fl_delete,
3433 .delete_empty = fl_delete_empty,
3435 .reoffload = fl_reoffload,
3436 .hw_add = fl_hw_add,
3437 .hw_del = fl_hw_del,
3439 .terse_dump = fl_terse_dump,
3440 .bind_class = fl_bind_class,
3441 .tmplt_create = fl_tmplt_create,
3442 .tmplt_destroy = fl_tmplt_destroy,
3443 .tmplt_dump = fl_tmplt_dump,
3444 .owner = THIS_MODULE,
3445 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
3448 static int __init cls_fl_init(void)
3450 return register_tcf_proto_ops(&cls_fl_ops);
3453 static void __exit cls_fl_exit(void)
3455 unregister_tcf_proto_ops(&cls_fl_ops);
3458 module_init(cls_fl_init);
3459 module_exit(cls_fl_exit);
3461 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3462 MODULE_DESCRIPTION("Flower classifier");
3463 MODULE_LICENSE("GPL v2");