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>
20 #include <net/sch_generic.h>
21 #include <net/pkt_cls.h>
23 #include <net/flow_dissector.h>
24 #include <net/geneve.h>
25 #include <net/vxlan.h>
26 #include <net/erspan.h>
29 #include <net/dst_metadata.h>
31 #include <uapi/linux/netfilter/nf_conntrack_common.h>
34 struct flow_dissector_key_meta meta;
35 struct flow_dissector_key_control control;
36 struct flow_dissector_key_control enc_control;
37 struct flow_dissector_key_basic basic;
38 struct flow_dissector_key_eth_addrs eth;
39 struct flow_dissector_key_vlan vlan;
40 struct flow_dissector_key_vlan cvlan;
42 struct flow_dissector_key_ipv4_addrs ipv4;
43 struct flow_dissector_key_ipv6_addrs ipv6;
45 struct flow_dissector_key_ports tp;
46 struct flow_dissector_key_icmp icmp;
47 struct flow_dissector_key_arp arp;
48 struct flow_dissector_key_keyid enc_key_id;
50 struct flow_dissector_key_ipv4_addrs enc_ipv4;
51 struct flow_dissector_key_ipv6_addrs enc_ipv6;
53 struct flow_dissector_key_ports enc_tp;
54 struct flow_dissector_key_mpls mpls;
55 struct flow_dissector_key_tcp tcp;
56 struct flow_dissector_key_ip ip;
57 struct flow_dissector_key_ip enc_ip;
58 struct flow_dissector_key_enc_opts enc_opts;
59 struct flow_dissector_key_ports tp_min;
60 struct flow_dissector_key_ports tp_max;
61 struct flow_dissector_key_ct ct;
62 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
64 struct fl_flow_mask_range {
65 unsigned short int start;
66 unsigned short int end;
70 struct fl_flow_key key;
71 struct fl_flow_mask_range range;
73 struct rhash_head ht_node;
75 struct rhashtable_params filter_ht_params;
76 struct flow_dissector dissector;
77 struct list_head filters;
78 struct rcu_work rwork;
79 struct list_head list;
83 struct fl_flow_tmplt {
84 struct fl_flow_key dummy_key;
85 struct fl_flow_key mask;
86 struct flow_dissector dissector;
87 struct tcf_chain *chain;
92 spinlock_t masks_lock; /* Protect masks list */
93 struct list_head masks;
94 struct list_head hw_filters;
95 struct rcu_work rwork;
96 struct idr handle_idr;
99 struct cls_fl_filter {
100 struct fl_flow_mask *mask;
101 struct rhash_head ht_node;
102 struct fl_flow_key mkey;
103 struct tcf_exts exts;
104 struct tcf_result res;
105 struct fl_flow_key key;
106 struct list_head list;
107 struct list_head hw_list;
111 struct rcu_work rwork;
112 struct net_device *hw_dev;
113 /* Flower classifier is unlocked, which means that its reference counter
114 * can be changed concurrently without any kind of external
115 * synchronization. Use atomic reference counter to be concurrency-safe.
121 static const struct rhashtable_params mask_ht_params = {
122 .key_offset = offsetof(struct fl_flow_mask, key),
123 .key_len = sizeof(struct fl_flow_key),
124 .head_offset = offsetof(struct fl_flow_mask, ht_node),
125 .automatic_shrinking = true,
128 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
130 return mask->range.end - mask->range.start;
133 static void fl_mask_update_range(struct fl_flow_mask *mask)
135 const u8 *bytes = (const u8 *) &mask->key;
136 size_t size = sizeof(mask->key);
137 size_t i, first = 0, last;
139 for (i = 0; i < size; i++) {
146 for (i = size - 1; i != first; i--) {
152 mask->range.start = rounddown(first, sizeof(long));
153 mask->range.end = roundup(last + 1, sizeof(long));
156 static void *fl_key_get_start(struct fl_flow_key *key,
157 const struct fl_flow_mask *mask)
159 return (u8 *) key + mask->range.start;
162 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
163 struct fl_flow_mask *mask)
165 const long *lkey = fl_key_get_start(key, mask);
166 const long *lmask = fl_key_get_start(&mask->key, mask);
167 long *lmkey = fl_key_get_start(mkey, mask);
170 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
171 *lmkey++ = *lkey++ & *lmask++;
174 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
175 struct fl_flow_mask *mask)
177 const long *lmask = fl_key_get_start(&mask->key, mask);
183 ltmplt = fl_key_get_start(&tmplt->mask, mask);
184 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
185 if (~*ltmplt++ & *lmask++)
191 static void fl_clear_masked_range(struct fl_flow_key *key,
192 struct fl_flow_mask *mask)
194 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
197 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
198 struct fl_flow_key *key,
199 struct fl_flow_key *mkey)
201 __be16 min_mask, max_mask, min_val, max_val;
203 min_mask = htons(filter->mask->key.tp_min.dst);
204 max_mask = htons(filter->mask->key.tp_max.dst);
205 min_val = htons(filter->key.tp_min.dst);
206 max_val = htons(filter->key.tp_max.dst);
208 if (min_mask && max_mask) {
209 if (htons(key->tp.dst) < min_val ||
210 htons(key->tp.dst) > max_val)
213 /* skb does not have min and max values */
214 mkey->tp_min.dst = filter->mkey.tp_min.dst;
215 mkey->tp_max.dst = filter->mkey.tp_max.dst;
220 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
221 struct fl_flow_key *key,
222 struct fl_flow_key *mkey)
224 __be16 min_mask, max_mask, min_val, max_val;
226 min_mask = htons(filter->mask->key.tp_min.src);
227 max_mask = htons(filter->mask->key.tp_max.src);
228 min_val = htons(filter->key.tp_min.src);
229 max_val = htons(filter->key.tp_max.src);
231 if (min_mask && max_mask) {
232 if (htons(key->tp.src) < min_val ||
233 htons(key->tp.src) > max_val)
236 /* skb does not have min and max values */
237 mkey->tp_min.src = filter->mkey.tp_min.src;
238 mkey->tp_max.src = filter->mkey.tp_max.src;
243 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
244 struct fl_flow_key *mkey)
246 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
247 mask->filter_ht_params);
250 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
251 struct fl_flow_key *mkey,
252 struct fl_flow_key *key)
254 struct cls_fl_filter *filter, *f;
256 list_for_each_entry_rcu(filter, &mask->filters, list) {
257 if (!fl_range_port_dst_cmp(filter, key, mkey))
260 if (!fl_range_port_src_cmp(filter, key, mkey))
263 f = __fl_lookup(mask, mkey);
270 static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
271 struct fl_flow_key *mkey,
272 struct fl_flow_key *key)
274 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
275 return fl_lookup_range(mask, mkey, key);
277 return __fl_lookup(mask, mkey);
280 static u16 fl_ct_info_to_flower_map[] = {
281 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
282 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
283 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
284 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
285 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
286 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
287 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
288 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
289 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
290 TCA_FLOWER_KEY_CT_FLAGS_NEW,
293 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
294 struct tcf_result *res)
296 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
297 struct fl_flow_key skb_mkey;
298 struct fl_flow_key skb_key;
299 struct fl_flow_mask *mask;
300 struct cls_fl_filter *f;
302 list_for_each_entry_rcu(mask, &head->masks, list) {
303 fl_clear_masked_range(&skb_key, mask);
305 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
306 /* skb_flow_dissect() does not set n_proto in case an unknown
307 * protocol, so do it rather here.
309 skb_key.basic.n_proto = skb->protocol;
310 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
311 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
312 fl_ct_info_to_flower_map,
313 ARRAY_SIZE(fl_ct_info_to_flower_map));
314 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
316 fl_set_masked_key(&skb_mkey, &skb_key, mask);
318 f = fl_lookup(mask, &skb_mkey, &skb_key);
319 if (f && !tc_skip_sw(f->flags)) {
321 return tcf_exts_exec(skb, &f->exts, res);
327 static int fl_init(struct tcf_proto *tp)
329 struct cls_fl_head *head;
331 head = kzalloc(sizeof(*head), GFP_KERNEL);
335 spin_lock_init(&head->masks_lock);
336 INIT_LIST_HEAD_RCU(&head->masks);
337 INIT_LIST_HEAD(&head->hw_filters);
338 rcu_assign_pointer(tp->root, head);
339 idr_init(&head->handle_idr);
341 return rhashtable_init(&head->ht, &mask_ht_params);
344 static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
346 /* temporary masks don't have their filters list and ht initialized */
347 if (mask_init_done) {
348 WARN_ON(!list_empty(&mask->filters));
349 rhashtable_destroy(&mask->ht);
354 static void fl_mask_free_work(struct work_struct *work)
356 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
357 struct fl_flow_mask, rwork);
359 fl_mask_free(mask, true);
362 static void fl_uninit_mask_free_work(struct work_struct *work)
364 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
365 struct fl_flow_mask, rwork);
367 fl_mask_free(mask, false);
370 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
372 if (!refcount_dec_and_test(&mask->refcnt))
375 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
377 spin_lock(&head->masks_lock);
378 list_del_rcu(&mask->list);
379 spin_unlock(&head->masks_lock);
381 tcf_queue_work(&mask->rwork, fl_mask_free_work);
386 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
388 /* Flower classifier only changes root pointer during init and destroy.
389 * Users must obtain reference to tcf_proto instance before calling its
390 * API, so tp->root pointer is protected from concurrent call to
391 * fl_destroy() by reference counting.
393 return rcu_dereference_raw(tp->root);
396 static void __fl_destroy_filter(struct cls_fl_filter *f)
398 tcf_exts_destroy(&f->exts);
399 tcf_exts_put_net(&f->exts);
403 static void fl_destroy_filter_work(struct work_struct *work)
405 struct cls_fl_filter *f = container_of(to_rcu_work(work),
406 struct cls_fl_filter, rwork);
408 __fl_destroy_filter(f);
411 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
412 bool rtnl_held, struct netlink_ext_ack *extack)
414 struct tcf_block *block = tp->chain->block;
415 struct flow_cls_offload cls_flower = {};
417 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
418 cls_flower.command = FLOW_CLS_DESTROY;
419 cls_flower.cookie = (unsigned long) f;
421 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
422 &f->flags, &f->in_hw_count, rtnl_held);
426 static int fl_hw_replace_filter(struct tcf_proto *tp,
427 struct cls_fl_filter *f, bool rtnl_held,
428 struct netlink_ext_ack *extack)
430 struct tcf_block *block = tp->chain->block;
431 struct flow_cls_offload cls_flower = {};
432 bool skip_sw = tc_skip_sw(f->flags);
435 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
436 if (!cls_flower.rule)
439 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
440 cls_flower.command = FLOW_CLS_REPLACE;
441 cls_flower.cookie = (unsigned long) f;
442 cls_flower.rule->match.dissector = &f->mask->dissector;
443 cls_flower.rule->match.mask = &f->mask->key;
444 cls_flower.rule->match.key = &f->mkey;
445 cls_flower.classid = f->res.classid;
447 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,
450 kfree(cls_flower.rule);
452 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
458 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
459 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
460 tc_cleanup_flow_action(&cls_flower.rule->action);
461 kfree(cls_flower.rule);
464 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
468 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
474 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
477 struct tcf_block *block = tp->chain->block;
478 struct flow_cls_offload cls_flower = {};
480 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
481 cls_flower.command = FLOW_CLS_STATS;
482 cls_flower.cookie = (unsigned long) f;
483 cls_flower.classid = f->res.classid;
485 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
488 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
489 cls_flower.stats.pkts,
490 cls_flower.stats.lastused);
493 static void __fl_put(struct cls_fl_filter *f)
495 if (!refcount_dec_and_test(&f->refcnt))
498 if (tcf_exts_get_net(&f->exts))
499 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
501 __fl_destroy_filter(f);
504 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
506 struct cls_fl_filter *f;
509 f = idr_find(&head->handle_idr, handle);
510 if (f && !refcount_inc_not_zero(&f->refcnt))
517 static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
518 bool *last, bool rtnl_held,
519 struct netlink_ext_ack *extack)
521 struct cls_fl_head *head = fl_head_dereference(tp);
525 spin_lock(&tp->lock);
527 spin_unlock(&tp->lock);
532 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
533 f->mask->filter_ht_params);
534 idr_remove(&head->handle_idr, f->handle);
535 list_del_rcu(&f->list);
536 spin_unlock(&tp->lock);
538 *last = fl_mask_put(head, f->mask);
539 if (!tc_skip_hw(f->flags))
540 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
541 tcf_unbind_filter(tp, &f->res);
547 static void fl_destroy_sleepable(struct work_struct *work)
549 struct cls_fl_head *head = container_of(to_rcu_work(work),
553 rhashtable_destroy(&head->ht);
555 module_put(THIS_MODULE);
558 static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
559 struct netlink_ext_ack *extack)
561 struct cls_fl_head *head = fl_head_dereference(tp);
562 struct fl_flow_mask *mask, *next_mask;
563 struct cls_fl_filter *f, *next;
566 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
567 list_for_each_entry_safe(f, next, &mask->filters, list) {
568 __fl_delete(tp, f, &last, rtnl_held, extack);
573 idr_destroy(&head->handle_idr);
575 __module_get(THIS_MODULE);
576 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
579 static void fl_put(struct tcf_proto *tp, void *arg)
581 struct cls_fl_filter *f = arg;
586 static void *fl_get(struct tcf_proto *tp, u32 handle)
588 struct cls_fl_head *head = fl_head_dereference(tp);
590 return __fl_get(head, handle);
593 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
594 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
595 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
596 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
598 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
599 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
600 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
601 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
602 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
603 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
604 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
605 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
606 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
607 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
608 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
609 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
610 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
611 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
612 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
613 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
614 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
615 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
616 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
617 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
618 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
619 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
620 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
621 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
622 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
623 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
624 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
625 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
626 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
627 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
628 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
629 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
630 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
631 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
632 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
633 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
634 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
635 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
636 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
637 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
638 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
639 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
640 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
641 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
642 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
643 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
644 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
645 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
646 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
647 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
648 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
649 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
650 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
651 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
652 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
653 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
654 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
655 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
656 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
657 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
658 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
659 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
660 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
661 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
662 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
663 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
664 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
665 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
666 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
667 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
668 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
669 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
671 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
672 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
673 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
674 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
675 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
678 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
679 [TCA_FLOWER_KEY_CT_STATE] = { .type = NLA_U16 },
680 [TCA_FLOWER_KEY_CT_STATE_MASK] = { .type = NLA_U16 },
681 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
682 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
683 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
684 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
685 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
686 .len = 128 / BITS_PER_BYTE },
687 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
688 .len = 128 / BITS_PER_BYTE },
691 static const struct nla_policy
692 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
693 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
694 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
695 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
696 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
697 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
700 static const struct nla_policy
701 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
702 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
703 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
704 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
708 static const struct nla_policy
709 vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
710 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
713 static const struct nla_policy
714 erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
715 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
716 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
717 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
718 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
721 static void fl_set_key_val(struct nlattr **tb,
722 void *val, int val_type,
723 void *mask, int mask_type, int len)
727 nla_memcpy(val, tb[val_type], len);
728 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
729 memset(mask, 0xff, len);
731 nla_memcpy(mask, tb[mask_type], len);
734 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
735 struct fl_flow_key *mask)
737 fl_set_key_val(tb, &key->tp_min.dst,
738 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
739 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
740 fl_set_key_val(tb, &key->tp_max.dst,
741 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
742 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
743 fl_set_key_val(tb, &key->tp_min.src,
744 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
745 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
746 fl_set_key_val(tb, &key->tp_max.src,
747 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
748 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
750 if ((mask->tp_min.dst && mask->tp_max.dst &&
751 htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
752 (mask->tp_min.src && mask->tp_max.src &&
753 htons(key->tp_max.src) <= htons(key->tp_min.src)))
759 static int fl_set_key_mpls(struct nlattr **tb,
760 struct flow_dissector_key_mpls *key_val,
761 struct flow_dissector_key_mpls *key_mask)
763 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
764 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
765 key_mask->mpls_ttl = MPLS_TTL_MASK;
767 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
768 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
770 if (bos & ~MPLS_BOS_MASK)
772 key_val->mpls_bos = bos;
773 key_mask->mpls_bos = MPLS_BOS_MASK;
775 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
776 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
778 if (tc & ~MPLS_TC_MASK)
780 key_val->mpls_tc = tc;
781 key_mask->mpls_tc = MPLS_TC_MASK;
783 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
784 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
786 if (label & ~MPLS_LABEL_MASK)
788 key_val->mpls_label = label;
789 key_mask->mpls_label = MPLS_LABEL_MASK;
794 static void fl_set_key_vlan(struct nlattr **tb,
796 int vlan_id_key, int vlan_prio_key,
797 struct flow_dissector_key_vlan *key_val,
798 struct flow_dissector_key_vlan *key_mask)
800 #define VLAN_PRIORITY_MASK 0x7
802 if (tb[vlan_id_key]) {
804 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
805 key_mask->vlan_id = VLAN_VID_MASK;
807 if (tb[vlan_prio_key]) {
808 key_val->vlan_priority =
809 nla_get_u8(tb[vlan_prio_key]) &
811 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
813 key_val->vlan_tpid = ethertype;
814 key_mask->vlan_tpid = cpu_to_be16(~0);
817 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
818 u32 *dissector_key, u32 *dissector_mask,
819 u32 flower_flag_bit, u32 dissector_flag_bit)
821 if (flower_mask & flower_flag_bit) {
822 *dissector_mask |= dissector_flag_bit;
823 if (flower_key & flower_flag_bit)
824 *dissector_key |= dissector_flag_bit;
828 static int fl_set_key_flags(struct nlattr **tb,
829 u32 *flags_key, u32 *flags_mask)
833 /* mask is mandatory for flags */
834 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
837 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
838 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
843 fl_set_key_flag(key, mask, flags_key, flags_mask,
844 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
845 fl_set_key_flag(key, mask, flags_key, flags_mask,
846 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
847 FLOW_DIS_FIRST_FRAG);
852 static void fl_set_key_ip(struct nlattr **tb, bool encap,
853 struct flow_dissector_key_ip *key,
854 struct flow_dissector_key_ip *mask)
856 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
857 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
858 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
859 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
861 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
862 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
865 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
866 int depth, int option_len,
867 struct netlink_ext_ack *extack)
869 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
870 struct nlattr *class = NULL, *type = NULL, *data = NULL;
871 struct geneve_opt *opt;
872 int err, data_len = 0;
874 if (option_len > sizeof(struct geneve_opt))
875 data_len = option_len - sizeof(struct geneve_opt);
877 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
878 memset(opt, 0xff, option_len);
879 opt->length = data_len / 4;
884 /* If no mask has been prodived we assume an exact match. */
886 return sizeof(struct geneve_opt) + data_len;
888 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
889 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
893 err = nla_parse_nested_deprecated(tb,
894 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
895 nla, geneve_opt_policy, extack);
899 /* We are not allowed to omit any of CLASS, TYPE or DATA
900 * fields from the key.
903 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
904 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
905 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
906 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
910 /* Omitting any of CLASS, TYPE or DATA fields is allowed
913 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
914 int new_len = key->enc_opts.len;
916 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
917 data_len = nla_len(data);
919 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
923 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
927 new_len += sizeof(struct geneve_opt) + data_len;
928 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
929 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
930 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
933 opt->length = data_len / 4;
934 memcpy(opt->opt_data, nla_data(data), data_len);
937 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
938 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
939 opt->opt_class = nla_get_be16(class);
942 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
943 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
944 opt->type = nla_get_u8(type);
947 return sizeof(struct geneve_opt) + data_len;
950 static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
951 int depth, int option_len,
952 struct netlink_ext_ack *extack)
954 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
955 struct vxlan_metadata *md;
958 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
959 memset(md, 0xff, sizeof(*md));
964 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
965 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
969 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
970 vxlan_opt_policy, extack);
974 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
975 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
979 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP])
980 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
985 static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
986 int depth, int option_len,
987 struct netlink_ext_ack *extack)
989 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
990 struct erspan_metadata *md;
993 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
994 memset(md, 0xff, sizeof(*md));
1000 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1001 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1005 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1006 erspan_opt_policy, extack);
1010 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1011 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1015 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1016 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1018 if (md->version == 1) {
1019 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1020 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1023 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1024 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1025 md->u.index = nla_get_be32(nla);
1027 } else if (md->version == 2) {
1028 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1029 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1030 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1033 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1034 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1035 md->u.md2.dir = nla_get_u8(nla);
1037 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1038 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1039 set_hwid(&md->u.md2, nla_get_u8(nla));
1042 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1049 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1050 struct fl_flow_key *mask,
1051 struct netlink_ext_ack *extack)
1053 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1054 int err, option_len, key_depth, msk_depth = 0;
1056 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1057 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1058 enc_opts_policy, extack);
1062 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1064 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1065 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1066 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1067 enc_opts_policy, extack);
1071 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1072 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1075 nla_for_each_attr(nla_opt_key, nla_enc_key,
1076 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1077 switch (nla_type(nla_opt_key)) {
1078 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1079 if (key->enc_opts.dst_opt_type &&
1080 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1081 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1085 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1086 option_len = fl_set_geneve_opt(nla_opt_key, key,
1087 key_depth, option_len,
1092 key->enc_opts.len += option_len;
1093 /* At the same time we need to parse through the mask
1094 * in order to verify exact and mask attribute lengths.
1096 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1097 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1098 msk_depth, option_len,
1103 mask->enc_opts.len += option_len;
1104 if (key->enc_opts.len != mask->enc_opts.len) {
1105 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1110 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1112 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1113 if (key->enc_opts.dst_opt_type) {
1114 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1118 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1119 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1120 key_depth, option_len,
1125 key->enc_opts.len += option_len;
1126 /* At the same time we need to parse through the mask
1127 * in order to verify exact and mask attribute lengths.
1129 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1130 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1131 msk_depth, option_len,
1136 mask->enc_opts.len += option_len;
1137 if (key->enc_opts.len != mask->enc_opts.len) {
1138 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1143 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1145 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1146 if (key->enc_opts.dst_opt_type) {
1147 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1151 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1152 option_len = fl_set_erspan_opt(nla_opt_key, key,
1153 key_depth, option_len,
1158 key->enc_opts.len += option_len;
1159 /* At the same time we need to parse through the mask
1160 * in order to verify exact and mask attribute lengths.
1162 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1163 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1164 msk_depth, option_len,
1169 mask->enc_opts.len += option_len;
1170 if (key->enc_opts.len != mask->enc_opts.len) {
1171 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1176 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1179 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1187 static int fl_set_key_ct(struct nlattr **tb,
1188 struct flow_dissector_key_ct *key,
1189 struct flow_dissector_key_ct *mask,
1190 struct netlink_ext_ack *extack)
1192 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1193 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1194 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1197 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1198 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1199 sizeof(key->ct_state));
1201 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1202 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1203 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1206 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1207 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1208 sizeof(key->ct_zone));
1210 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1211 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1212 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1215 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1216 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1217 sizeof(key->ct_mark));
1219 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1220 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1221 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1224 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1225 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1226 sizeof(key->ct_labels));
1232 static int fl_set_key(struct net *net, struct nlattr **tb,
1233 struct fl_flow_key *key, struct fl_flow_key *mask,
1234 struct netlink_ext_ack *extack)
1239 if (tb[TCA_FLOWER_INDEV]) {
1240 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1243 key->meta.ingress_ifindex = err;
1244 mask->meta.ingress_ifindex = 0xffffffff;
1247 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1248 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1249 sizeof(key->eth.dst));
1250 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1251 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1252 sizeof(key->eth.src));
1254 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
1255 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1257 if (eth_type_vlan(ethertype)) {
1258 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1259 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1262 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1263 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1264 if (eth_type_vlan(ethertype)) {
1265 fl_set_key_vlan(tb, ethertype,
1266 TCA_FLOWER_KEY_CVLAN_ID,
1267 TCA_FLOWER_KEY_CVLAN_PRIO,
1268 &key->cvlan, &mask->cvlan);
1269 fl_set_key_val(tb, &key->basic.n_proto,
1270 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1271 &mask->basic.n_proto,
1273 sizeof(key->basic.n_proto));
1275 key->basic.n_proto = ethertype;
1276 mask->basic.n_proto = cpu_to_be16(~0);
1280 key->basic.n_proto = ethertype;
1281 mask->basic.n_proto = cpu_to_be16(~0);
1285 if (key->basic.n_proto == htons(ETH_P_IP) ||
1286 key->basic.n_proto == htons(ETH_P_IPV6)) {
1287 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1288 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1289 sizeof(key->basic.ip_proto));
1290 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1293 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1294 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1295 mask->control.addr_type = ~0;
1296 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1297 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1298 sizeof(key->ipv4.src));
1299 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1300 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1301 sizeof(key->ipv4.dst));
1302 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1303 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1304 mask->control.addr_type = ~0;
1305 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1306 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1307 sizeof(key->ipv6.src));
1308 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1309 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1310 sizeof(key->ipv6.dst));
1313 if (key->basic.ip_proto == IPPROTO_TCP) {
1314 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1315 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1316 sizeof(key->tp.src));
1317 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1318 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1319 sizeof(key->tp.dst));
1320 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1321 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1322 sizeof(key->tcp.flags));
1323 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1324 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1325 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1326 sizeof(key->tp.src));
1327 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1328 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1329 sizeof(key->tp.dst));
1330 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1331 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1332 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1333 sizeof(key->tp.src));
1334 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1335 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1336 sizeof(key->tp.dst));
1337 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1338 key->basic.ip_proto == IPPROTO_ICMP) {
1339 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1341 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1342 sizeof(key->icmp.type));
1343 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1345 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1346 sizeof(key->icmp.code));
1347 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1348 key->basic.ip_proto == IPPROTO_ICMPV6) {
1349 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1351 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1352 sizeof(key->icmp.type));
1353 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1355 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1356 sizeof(key->icmp.code));
1357 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1358 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1359 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1362 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1363 key->basic.n_proto == htons(ETH_P_RARP)) {
1364 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1365 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1366 sizeof(key->arp.sip));
1367 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1368 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1369 sizeof(key->arp.tip));
1370 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1371 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1372 sizeof(key->arp.op));
1373 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1374 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1375 sizeof(key->arp.sha));
1376 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1377 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1378 sizeof(key->arp.tha));
1381 if (key->basic.ip_proto == IPPROTO_TCP ||
1382 key->basic.ip_proto == IPPROTO_UDP ||
1383 key->basic.ip_proto == IPPROTO_SCTP) {
1384 ret = fl_set_key_port_range(tb, key, mask);
1389 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1390 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1391 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1392 mask->enc_control.addr_type = ~0;
1393 fl_set_key_val(tb, &key->enc_ipv4.src,
1394 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1395 &mask->enc_ipv4.src,
1396 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1397 sizeof(key->enc_ipv4.src));
1398 fl_set_key_val(tb, &key->enc_ipv4.dst,
1399 TCA_FLOWER_KEY_ENC_IPV4_DST,
1400 &mask->enc_ipv4.dst,
1401 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1402 sizeof(key->enc_ipv4.dst));
1405 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1406 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1407 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1408 mask->enc_control.addr_type = ~0;
1409 fl_set_key_val(tb, &key->enc_ipv6.src,
1410 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1411 &mask->enc_ipv6.src,
1412 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1413 sizeof(key->enc_ipv6.src));
1414 fl_set_key_val(tb, &key->enc_ipv6.dst,
1415 TCA_FLOWER_KEY_ENC_IPV6_DST,
1416 &mask->enc_ipv6.dst,
1417 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1418 sizeof(key->enc_ipv6.dst));
1421 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1422 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1423 sizeof(key->enc_key_id.keyid));
1425 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1426 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1427 sizeof(key->enc_tp.src));
1429 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1430 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1431 sizeof(key->enc_tp.dst));
1433 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1435 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1436 ret = fl_set_enc_opt(tb, key, mask, extack);
1441 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1445 if (tb[TCA_FLOWER_KEY_FLAGS])
1446 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
1451 static void fl_mask_copy(struct fl_flow_mask *dst,
1452 struct fl_flow_mask *src)
1454 const void *psrc = fl_key_get_start(&src->key, src);
1455 void *pdst = fl_key_get_start(&dst->key, src);
1457 memcpy(pdst, psrc, fl_mask_range(src));
1458 dst->range = src->range;
1461 static const struct rhashtable_params fl_ht_params = {
1462 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1463 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1464 .automatic_shrinking = true,
1467 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1469 mask->filter_ht_params = fl_ht_params;
1470 mask->filter_ht_params.key_len = fl_mask_range(mask);
1471 mask->filter_ht_params.key_offset += mask->range.start;
1473 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1476 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1477 #define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
1479 #define FL_KEY_IS_MASKED(mask, member) \
1480 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1481 0, FL_KEY_MEMBER_SIZE(member)) \
1483 #define FL_KEY_SET(keys, cnt, id, member) \
1485 keys[cnt].key_id = id; \
1486 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1490 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1492 if (FL_KEY_IS_MASKED(mask, member)) \
1493 FL_KEY_SET(keys, cnt, id, member); \
1496 static void fl_init_dissector(struct flow_dissector *dissector,
1497 struct fl_flow_key *mask)
1499 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1502 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1503 FLOW_DISSECTOR_KEY_META, meta);
1504 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1505 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1506 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1507 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1508 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1509 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1510 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1511 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1512 if (FL_KEY_IS_MASKED(mask, tp) ||
1513 FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1514 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
1515 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1516 FLOW_DISSECTOR_KEY_IP, ip);
1517 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1518 FLOW_DISSECTOR_KEY_TCP, tcp);
1519 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1520 FLOW_DISSECTOR_KEY_ICMP, icmp);
1521 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1522 FLOW_DISSECTOR_KEY_ARP, arp);
1523 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1524 FLOW_DISSECTOR_KEY_MPLS, mpls);
1525 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1526 FLOW_DISSECTOR_KEY_VLAN, vlan);
1527 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1528 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1529 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1530 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1531 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1532 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1533 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1534 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1535 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1536 FL_KEY_IS_MASKED(mask, enc_ipv6))
1537 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1539 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1540 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1541 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1542 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1543 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1544 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1545 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1546 FLOW_DISSECTOR_KEY_CT, ct);
1548 skb_flow_dissector_init(dissector, keys, cnt);
1551 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1552 struct fl_flow_mask *mask)
1554 struct fl_flow_mask *newmask;
1557 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1559 return ERR_PTR(-ENOMEM);
1561 fl_mask_copy(newmask, mask);
1563 if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1564 (newmask->key.tp_min.src && newmask->key.tp_max.src))
1565 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1567 err = fl_init_mask_hashtable(newmask);
1571 fl_init_dissector(&newmask->dissector, &newmask->key);
1573 INIT_LIST_HEAD_RCU(&newmask->filters);
1575 refcount_set(&newmask->refcnt, 1);
1576 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1577 &newmask->ht_node, mask_ht_params);
1579 goto errout_destroy;
1581 spin_lock(&head->masks_lock);
1582 list_add_tail_rcu(&newmask->list, &head->masks);
1583 spin_unlock(&head->masks_lock);
1588 rhashtable_destroy(&newmask->ht);
1592 return ERR_PTR(err);
1595 static int fl_check_assign_mask(struct cls_fl_head *head,
1596 struct cls_fl_filter *fnew,
1597 struct cls_fl_filter *fold,
1598 struct fl_flow_mask *mask)
1600 struct fl_flow_mask *newmask;
1605 /* Insert mask as temporary node to prevent concurrent creation of mask
1606 * with same key. Any concurrent lookups with same key will return
1607 * -EAGAIN because mask's refcnt is zero.
1609 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1617 goto errout_cleanup;
1620 newmask = fl_create_new_mask(head, mask);
1621 if (IS_ERR(newmask)) {
1622 ret = PTR_ERR(newmask);
1623 goto errout_cleanup;
1626 fnew->mask = newmask;
1628 } else if (IS_ERR(fnew->mask)) {
1629 ret = PTR_ERR(fnew->mask);
1630 } else if (fold && fold->mask != fnew->mask) {
1632 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1633 /* Mask was deleted concurrently, try again */
1640 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1645 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1646 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1647 unsigned long base, struct nlattr **tb,
1648 struct nlattr *est, bool ovr,
1649 struct fl_flow_tmplt *tmplt, bool rtnl_held,
1650 struct netlink_ext_ack *extack)
1654 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
1659 if (tb[TCA_FLOWER_CLASSID]) {
1660 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1663 tcf_bind_filter(tp, &f->res, base);
1668 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1672 fl_mask_update_range(mask);
1673 fl_set_masked_key(&f->mkey, &f->key, mask);
1675 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1676 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1683 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1684 struct cls_fl_filter *fold,
1687 struct fl_flow_mask *mask = fnew->mask;
1690 err = rhashtable_lookup_insert_fast(&mask->ht,
1692 mask->filter_ht_params);
1695 /* It is okay if filter with same key exists when
1698 return fold && err == -EEXIST ? 0 : err;
1705 static int fl_change(struct net *net, struct sk_buff *in_skb,
1706 struct tcf_proto *tp, unsigned long base,
1707 u32 handle, struct nlattr **tca,
1708 void **arg, bool ovr, bool rtnl_held,
1709 struct netlink_ext_ack *extack)
1711 struct cls_fl_head *head = fl_head_dereference(tp);
1712 struct cls_fl_filter *fold = *arg;
1713 struct cls_fl_filter *fnew;
1714 struct fl_flow_mask *mask;
1719 if (!tca[TCA_OPTIONS]) {
1724 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
1730 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1733 goto errout_mask_alloc;
1736 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1737 tca[TCA_OPTIONS], fl_policy, NULL);
1741 if (fold && handle && fold->handle != handle) {
1746 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1751 INIT_LIST_HEAD(&fnew->hw_list);
1752 refcount_set(&fnew->refcnt, 1);
1754 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
1758 if (tb[TCA_FLOWER_FLAGS]) {
1759 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1761 if (!tc_flags_valid(fnew->flags)) {
1767 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
1768 tp->chain->tmplt_priv, rtnl_held, extack);
1772 err = fl_check_assign_mask(head, fnew, fold, mask);
1776 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1780 if (!tc_skip_hw(fnew->flags)) {
1781 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
1786 if (!tc_in_hw(fnew->flags))
1787 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1789 spin_lock(&tp->lock);
1791 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
1792 * proto again or create new one, if necessary.
1800 /* Fold filter was deleted concurrently. Retry lookup. */
1801 if (fold->deleted) {
1806 fnew->handle = handle;
1809 struct rhashtable_params params =
1810 fnew->mask->filter_ht_params;
1812 err = rhashtable_insert_fast(&fnew->mask->ht,
1820 refcount_inc(&fnew->refcnt);
1821 rhashtable_remove_fast(&fold->mask->ht,
1823 fold->mask->filter_ht_params);
1824 idr_replace(&head->handle_idr, fnew, fnew->handle);
1825 list_replace_rcu(&fold->list, &fnew->list);
1826 fold->deleted = true;
1828 spin_unlock(&tp->lock);
1830 fl_mask_put(head, fold->mask);
1831 if (!tc_skip_hw(fold->flags))
1832 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
1833 tcf_unbind_filter(tp, &fold->res);
1834 /* Caller holds reference to fold, so refcnt is always > 0
1837 refcount_dec(&fold->refcnt);
1841 /* user specifies a handle and it doesn't exist */
1842 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1843 handle, GFP_ATOMIC);
1845 /* Filter with specified handle was concurrently
1846 * inserted after initial check in cls_api. This is not
1847 * necessarily an error if NLM_F_EXCL is not set in
1848 * message flags. Returning EAGAIN will cause cls_api to
1849 * try to update concurrently inserted rule.
1855 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1856 INT_MAX, GFP_ATOMIC);
1861 refcount_inc(&fnew->refcnt);
1862 fnew->handle = handle;
1863 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
1864 spin_unlock(&tp->lock);
1870 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
1874 spin_lock(&tp->lock);
1876 fnew->deleted = true;
1877 spin_unlock(&tp->lock);
1878 if (!tc_skip_hw(fnew->flags))
1879 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1881 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1882 fnew->mask->filter_ht_params);
1884 fl_mask_put(head, fnew->mask);
1890 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
1897 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
1898 bool rtnl_held, struct netlink_ext_ack *extack)
1900 struct cls_fl_head *head = fl_head_dereference(tp);
1901 struct cls_fl_filter *f = arg;
1905 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
1906 *last = list_empty(&head->masks);
1912 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
1915 struct cls_fl_head *head = fl_head_dereference(tp);
1916 unsigned long id = arg->cookie, tmp;
1917 struct cls_fl_filter *f;
1919 arg->count = arg->skip;
1921 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
1922 /* don't return filters that are being deleted */
1923 if (!refcount_inc_not_zero(&f->refcnt))
1925 if (arg->fn(tp, f, arg) < 0) {
1936 static struct cls_fl_filter *
1937 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
1939 struct cls_fl_head *head = fl_head_dereference(tp);
1941 spin_lock(&tp->lock);
1942 if (list_empty(&head->hw_filters)) {
1943 spin_unlock(&tp->lock);
1948 f = list_entry(&head->hw_filters, struct cls_fl_filter,
1950 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
1951 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
1952 spin_unlock(&tp->lock);
1957 spin_unlock(&tp->lock);
1961 static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
1962 void *cb_priv, struct netlink_ext_ack *extack)
1964 struct tcf_block *block = tp->chain->block;
1965 struct flow_cls_offload cls_flower = {};
1966 struct cls_fl_filter *f = NULL;
1969 /* hw_filters list can only be changed by hw offload functions after
1970 * obtaining rtnl lock. Make sure it is not changed while reoffload is
1975 while ((f = fl_get_next_hw_filter(tp, f, add))) {
1977 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
1978 if (!cls_flower.rule) {
1983 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
1985 cls_flower.command = add ?
1986 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
1987 cls_flower.cookie = (unsigned long)f;
1988 cls_flower.rule->match.dissector = &f->mask->dissector;
1989 cls_flower.rule->match.mask = &f->mask->key;
1990 cls_flower.rule->match.key = &f->mkey;
1992 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,
1995 kfree(cls_flower.rule);
1996 if (tc_skip_sw(f->flags)) {
1997 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
2004 cls_flower.classid = f->res.classid;
2006 err = tc_setup_cb_reoffload(block, tp, add, cb,
2007 TC_SETUP_CLSFLOWER, &cls_flower,
2010 tc_cleanup_flow_action(&cls_flower.rule->action);
2011 kfree(cls_flower.rule);
2024 static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2026 struct flow_cls_offload *cls_flower = type_data;
2027 struct cls_fl_filter *f =
2028 (struct cls_fl_filter *) cls_flower->cookie;
2029 struct cls_fl_head *head = fl_head_dereference(tp);
2031 spin_lock(&tp->lock);
2032 list_add(&f->hw_list, &head->hw_filters);
2033 spin_unlock(&tp->lock);
2036 static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2038 struct flow_cls_offload *cls_flower = type_data;
2039 struct cls_fl_filter *f =
2040 (struct cls_fl_filter *) cls_flower->cookie;
2042 spin_lock(&tp->lock);
2043 if (!list_empty(&f->hw_list))
2044 list_del_init(&f->hw_list);
2045 spin_unlock(&tp->lock);
2048 static int fl_hw_create_tmplt(struct tcf_chain *chain,
2049 struct fl_flow_tmplt *tmplt)
2051 struct flow_cls_offload cls_flower = {};
2052 struct tcf_block *block = chain->block;
2054 cls_flower.rule = flow_rule_alloc(0);
2055 if (!cls_flower.rule)
2058 cls_flower.common.chain_index = chain->index;
2059 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2060 cls_flower.cookie = (unsigned long) tmplt;
2061 cls_flower.rule->match.dissector = &tmplt->dissector;
2062 cls_flower.rule->match.mask = &tmplt->mask;
2063 cls_flower.rule->match.key = &tmplt->dummy_key;
2065 /* We don't care if driver (any of them) fails to handle this
2066 * call. It serves just as a hint for it.
2068 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2069 kfree(cls_flower.rule);
2074 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2075 struct fl_flow_tmplt *tmplt)
2077 struct flow_cls_offload cls_flower = {};
2078 struct tcf_block *block = chain->block;
2080 cls_flower.common.chain_index = chain->index;
2081 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2082 cls_flower.cookie = (unsigned long) tmplt;
2084 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2087 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2088 struct nlattr **tca,
2089 struct netlink_ext_ack *extack)
2091 struct fl_flow_tmplt *tmplt;
2095 if (!tca[TCA_OPTIONS])
2096 return ERR_PTR(-EINVAL);
2098 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2100 return ERR_PTR(-ENOBUFS);
2101 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2102 tca[TCA_OPTIONS], fl_policy, NULL);
2106 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2111 tmplt->chain = chain;
2112 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2116 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2118 err = fl_hw_create_tmplt(chain, tmplt);
2129 return ERR_PTR(err);
2132 static void fl_tmplt_destroy(void *tmplt_priv)
2134 struct fl_flow_tmplt *tmplt = tmplt_priv;
2136 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2140 static int fl_dump_key_val(struct sk_buff *skb,
2141 void *val, int val_type,
2142 void *mask, int mask_type, int len)
2146 if (!memchr_inv(mask, 0, len))
2148 err = nla_put(skb, val_type, len, val);
2151 if (mask_type != TCA_FLOWER_UNSPEC) {
2152 err = nla_put(skb, mask_type, len, mask);
2159 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2160 struct fl_flow_key *mask)
2162 if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
2163 &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
2164 sizeof(key->tp_min.dst)) ||
2165 fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
2166 &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
2167 sizeof(key->tp_max.dst)) ||
2168 fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
2169 &mask->tp_min.src, TCA_FLOWER_UNSPEC,
2170 sizeof(key->tp_min.src)) ||
2171 fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
2172 &mask->tp_max.src, TCA_FLOWER_UNSPEC,
2173 sizeof(key->tp_max.src)))
2179 static int fl_dump_key_mpls(struct sk_buff *skb,
2180 struct flow_dissector_key_mpls *mpls_key,
2181 struct flow_dissector_key_mpls *mpls_mask)
2185 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
2187 if (mpls_mask->mpls_ttl) {
2188 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2189 mpls_key->mpls_ttl);
2193 if (mpls_mask->mpls_tc) {
2194 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2199 if (mpls_mask->mpls_label) {
2200 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2201 mpls_key->mpls_label);
2205 if (mpls_mask->mpls_bos) {
2206 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2207 mpls_key->mpls_bos);
2214 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2215 struct flow_dissector_key_ip *key,
2216 struct flow_dissector_key_ip *mask)
2218 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2219 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2220 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2221 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2223 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2224 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2230 static int fl_dump_key_vlan(struct sk_buff *skb,
2231 int vlan_id_key, int vlan_prio_key,
2232 struct flow_dissector_key_vlan *vlan_key,
2233 struct flow_dissector_key_vlan *vlan_mask)
2237 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2239 if (vlan_mask->vlan_id) {
2240 err = nla_put_u16(skb, vlan_id_key,
2245 if (vlan_mask->vlan_priority) {
2246 err = nla_put_u8(skb, vlan_prio_key,
2247 vlan_key->vlan_priority);
2254 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2255 u32 *flower_key, u32 *flower_mask,
2256 u32 flower_flag_bit, u32 dissector_flag_bit)
2258 if (dissector_mask & dissector_flag_bit) {
2259 *flower_mask |= flower_flag_bit;
2260 if (dissector_key & dissector_flag_bit)
2261 *flower_key |= flower_flag_bit;
2265 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2271 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2277 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2278 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2279 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2280 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2281 FLOW_DIS_FIRST_FRAG);
2283 _key = cpu_to_be32(key);
2284 _mask = cpu_to_be32(mask);
2286 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2290 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2293 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2294 struct flow_dissector_key_enc_opts *enc_opts)
2296 struct geneve_opt *opt;
2297 struct nlattr *nest;
2300 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2302 goto nla_put_failure;
2304 while (enc_opts->len > opt_off) {
2305 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2307 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2309 goto nla_put_failure;
2310 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2312 goto nla_put_failure;
2313 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2314 opt->length * 4, opt->opt_data))
2315 goto nla_put_failure;
2317 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2319 nla_nest_end(skb, nest);
2323 nla_nest_cancel(skb, nest);
2327 static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2328 struct flow_dissector_key_enc_opts *enc_opts)
2330 struct vxlan_metadata *md;
2331 struct nlattr *nest;
2333 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2335 goto nla_put_failure;
2337 md = (struct vxlan_metadata *)&enc_opts->data[0];
2338 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2339 goto nla_put_failure;
2341 nla_nest_end(skb, nest);
2345 nla_nest_cancel(skb, nest);
2349 static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2350 struct flow_dissector_key_enc_opts *enc_opts)
2352 struct erspan_metadata *md;
2353 struct nlattr *nest;
2355 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2357 goto nla_put_failure;
2359 md = (struct erspan_metadata *)&enc_opts->data[0];
2360 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2361 goto nla_put_failure;
2363 if (md->version == 1 &&
2364 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2365 goto nla_put_failure;
2367 if (md->version == 2 &&
2368 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2370 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2371 get_hwid(&md->u.md2))))
2372 goto nla_put_failure;
2374 nla_nest_end(skb, nest);
2378 nla_nest_cancel(skb, nest);
2382 static int fl_dump_key_ct(struct sk_buff *skb,
2383 struct flow_dissector_key_ct *key,
2384 struct flow_dissector_key_ct *mask)
2386 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2387 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2388 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2389 sizeof(key->ct_state)))
2390 goto nla_put_failure;
2392 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2393 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2394 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2395 sizeof(key->ct_zone)))
2396 goto nla_put_failure;
2398 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2399 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2400 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2401 sizeof(key->ct_mark)))
2402 goto nla_put_failure;
2404 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2405 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2406 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2407 sizeof(key->ct_labels)))
2408 goto nla_put_failure;
2416 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2417 struct flow_dissector_key_enc_opts *enc_opts)
2419 struct nlattr *nest;
2425 nest = nla_nest_start_noflag(skb, enc_opt_type);
2427 goto nla_put_failure;
2429 switch (enc_opts->dst_opt_type) {
2430 case TUNNEL_GENEVE_OPT:
2431 err = fl_dump_key_geneve_opt(skb, enc_opts);
2433 goto nla_put_failure;
2435 case TUNNEL_VXLAN_OPT:
2436 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2438 goto nla_put_failure;
2440 case TUNNEL_ERSPAN_OPT:
2441 err = fl_dump_key_erspan_opt(skb, enc_opts);
2443 goto nla_put_failure;
2446 goto nla_put_failure;
2448 nla_nest_end(skb, nest);
2452 nla_nest_cancel(skb, nest);
2456 static int fl_dump_key_enc_opt(struct sk_buff *skb,
2457 struct flow_dissector_key_enc_opts *key_opts,
2458 struct flow_dissector_key_enc_opts *msk_opts)
2462 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2466 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2469 static int fl_dump_key(struct sk_buff *skb, struct net *net,
2470 struct fl_flow_key *key, struct fl_flow_key *mask)
2472 if (mask->meta.ingress_ifindex) {
2473 struct net_device *dev;
2475 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
2476 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2477 goto nla_put_failure;
2480 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2481 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2482 sizeof(key->eth.dst)) ||
2483 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2484 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2485 sizeof(key->eth.src)) ||
2486 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2487 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2488 sizeof(key->basic.n_proto)))
2489 goto nla_put_failure;
2491 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2492 goto nla_put_failure;
2494 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2495 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
2496 goto nla_put_failure;
2498 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2499 TCA_FLOWER_KEY_CVLAN_PRIO,
2500 &key->cvlan, &mask->cvlan) ||
2501 (mask->cvlan.vlan_tpid &&
2502 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2503 key->cvlan.vlan_tpid)))
2504 goto nla_put_failure;
2506 if (mask->basic.n_proto) {
2507 if (mask->cvlan.vlan_tpid) {
2508 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2509 key->basic.n_proto))
2510 goto nla_put_failure;
2511 } else if (mask->vlan.vlan_tpid) {
2512 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2513 key->basic.n_proto))
2514 goto nla_put_failure;
2518 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2519 key->basic.n_proto == htons(ETH_P_IPV6)) &&
2520 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
2521 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
2522 sizeof(key->basic.ip_proto)) ||
2523 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
2524 goto nla_put_failure;
2526 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2527 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2528 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2529 sizeof(key->ipv4.src)) ||
2530 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2531 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2532 sizeof(key->ipv4.dst))))
2533 goto nla_put_failure;
2534 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2535 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2536 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2537 sizeof(key->ipv6.src)) ||
2538 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2539 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2540 sizeof(key->ipv6.dst))))
2541 goto nla_put_failure;
2543 if (key->basic.ip_proto == IPPROTO_TCP &&
2544 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
2545 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
2546 sizeof(key->tp.src)) ||
2547 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
2548 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
2549 sizeof(key->tp.dst)) ||
2550 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2551 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2552 sizeof(key->tcp.flags))))
2553 goto nla_put_failure;
2554 else if (key->basic.ip_proto == IPPROTO_UDP &&
2555 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
2556 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
2557 sizeof(key->tp.src)) ||
2558 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
2559 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
2560 sizeof(key->tp.dst))))
2561 goto nla_put_failure;
2562 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2563 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2564 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2565 sizeof(key->tp.src)) ||
2566 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2567 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
2568 sizeof(key->tp.dst))))
2569 goto nla_put_failure;
2570 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2571 key->basic.ip_proto == IPPROTO_ICMP &&
2572 (fl_dump_key_val(skb, &key->icmp.type,
2573 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2574 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2575 sizeof(key->icmp.type)) ||
2576 fl_dump_key_val(skb, &key->icmp.code,
2577 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2578 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2579 sizeof(key->icmp.code))))
2580 goto nla_put_failure;
2581 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2582 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2583 (fl_dump_key_val(skb, &key->icmp.type,
2584 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2585 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2586 sizeof(key->icmp.type)) ||
2587 fl_dump_key_val(skb, &key->icmp.code,
2588 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2589 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2590 sizeof(key->icmp.code))))
2591 goto nla_put_failure;
2592 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2593 key->basic.n_proto == htons(ETH_P_RARP)) &&
2594 (fl_dump_key_val(skb, &key->arp.sip,
2595 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2596 TCA_FLOWER_KEY_ARP_SIP_MASK,
2597 sizeof(key->arp.sip)) ||
2598 fl_dump_key_val(skb, &key->arp.tip,
2599 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2600 TCA_FLOWER_KEY_ARP_TIP_MASK,
2601 sizeof(key->arp.tip)) ||
2602 fl_dump_key_val(skb, &key->arp.op,
2603 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2604 TCA_FLOWER_KEY_ARP_OP_MASK,
2605 sizeof(key->arp.op)) ||
2606 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2607 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2608 sizeof(key->arp.sha)) ||
2609 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2610 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2611 sizeof(key->arp.tha))))
2612 goto nla_put_failure;
2614 if ((key->basic.ip_proto == IPPROTO_TCP ||
2615 key->basic.ip_proto == IPPROTO_UDP ||
2616 key->basic.ip_proto == IPPROTO_SCTP) &&
2617 fl_dump_key_port_range(skb, key, mask))
2618 goto nla_put_failure;
2620 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2621 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2622 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2623 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2624 sizeof(key->enc_ipv4.src)) ||
2625 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2626 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2627 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2628 sizeof(key->enc_ipv4.dst))))
2629 goto nla_put_failure;
2630 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2631 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2632 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2633 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2634 sizeof(key->enc_ipv6.src)) ||
2635 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2636 TCA_FLOWER_KEY_ENC_IPV6_DST,
2637 &mask->enc_ipv6.dst,
2638 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2639 sizeof(key->enc_ipv6.dst))))
2640 goto nla_put_failure;
2642 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
2643 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
2644 sizeof(key->enc_key_id)) ||
2645 fl_dump_key_val(skb, &key->enc_tp.src,
2646 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2648 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2649 sizeof(key->enc_tp.src)) ||
2650 fl_dump_key_val(skb, &key->enc_tp.dst,
2651 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2653 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
2654 sizeof(key->enc_tp.dst)) ||
2655 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2656 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
2657 goto nla_put_failure;
2659 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
2660 goto nla_put_failure;
2662 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2663 goto nla_put_failure;
2671 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2672 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
2674 struct cls_fl_filter *f = fh;
2675 struct nlattr *nest;
2676 struct fl_flow_key *key, *mask;
2682 t->tcm_handle = f->handle;
2684 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2686 goto nla_put_failure;
2688 spin_lock(&tp->lock);
2690 if (f->res.classid &&
2691 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
2692 goto nla_put_failure_locked;
2695 mask = &f->mask->key;
2696 skip_hw = tc_skip_hw(f->flags);
2698 if (fl_dump_key(skb, net, key, mask))
2699 goto nla_put_failure_locked;
2701 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
2702 goto nla_put_failure_locked;
2704 spin_unlock(&tp->lock);
2707 fl_hw_update_stats(tp, f, rtnl_held);
2709 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2710 goto nla_put_failure;
2712 if (tcf_exts_dump(skb, &f->exts))
2713 goto nla_put_failure;
2715 nla_nest_end(skb, nest);
2717 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2718 goto nla_put_failure;
2722 nla_put_failure_locked:
2723 spin_unlock(&tp->lock);
2725 nla_nest_cancel(skb, nest);
2729 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2731 struct fl_flow_tmplt *tmplt = tmplt_priv;
2732 struct fl_flow_key *key, *mask;
2733 struct nlattr *nest;
2735 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2737 goto nla_put_failure;
2739 key = &tmplt->dummy_key;
2740 mask = &tmplt->mask;
2742 if (fl_dump_key(skb, net, key, mask))
2743 goto nla_put_failure;
2745 nla_nest_end(skb, nest);
2750 nla_nest_cancel(skb, nest);
2754 static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2756 struct cls_fl_filter *f = fh;
2758 if (f && f->res.classid == classid)
2762 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2764 .classify = fl_classify,
2766 .destroy = fl_destroy,
2769 .change = fl_change,
2770 .delete = fl_delete,
2772 .reoffload = fl_reoffload,
2773 .hw_add = fl_hw_add,
2774 .hw_del = fl_hw_del,
2776 .bind_class = fl_bind_class,
2777 .tmplt_create = fl_tmplt_create,
2778 .tmplt_destroy = fl_tmplt_destroy,
2779 .tmplt_dump = fl_tmplt_dump,
2780 .owner = THIS_MODULE,
2781 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
2784 static int __init cls_fl_init(void)
2786 return register_tcf_proto_ops(&cls_fl_ops);
2789 static void __exit cls_fl_exit(void)
2791 unregister_tcf_proto_ops(&cls_fl_ops);
2794 module_init(cls_fl_init);
2795 module_exit(cls_fl_exit);
2797 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2798 MODULE_DESCRIPTION("Flower classifier");
2799 MODULE_LICENSE("GPL v2");