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>
22 #include <net/pkt_sched.h>
24 #include <net/flow_dissector.h>
25 #include <net/geneve.h>
26 #include <net/vxlan.h>
27 #include <net/erspan.h>
31 #include <net/dst_metadata.h>
33 #include <uapi/linux/netfilter/nf_conntrack_common.h>
35 #define TCA_FLOWER_KEY_CT_FLAGS_MAX \
36 ((__TCA_FLOWER_KEY_CT_FLAGS_MAX - 1) << 1)
37 #define TCA_FLOWER_KEY_CT_FLAGS_MASK \
38 (TCA_FLOWER_KEY_CT_FLAGS_MAX - 1)
41 struct flow_dissector_key_meta meta;
42 struct flow_dissector_key_control control;
43 struct flow_dissector_key_control enc_control;
44 struct flow_dissector_key_basic basic;
45 struct flow_dissector_key_eth_addrs eth;
46 struct flow_dissector_key_vlan vlan;
47 struct flow_dissector_key_vlan cvlan;
49 struct flow_dissector_key_ipv4_addrs ipv4;
50 struct flow_dissector_key_ipv6_addrs ipv6;
52 struct flow_dissector_key_ports tp;
53 struct flow_dissector_key_icmp icmp;
54 struct flow_dissector_key_arp arp;
55 struct flow_dissector_key_keyid enc_key_id;
57 struct flow_dissector_key_ipv4_addrs enc_ipv4;
58 struct flow_dissector_key_ipv6_addrs enc_ipv6;
60 struct flow_dissector_key_ports enc_tp;
61 struct flow_dissector_key_mpls mpls;
62 struct flow_dissector_key_tcp tcp;
63 struct flow_dissector_key_ip ip;
64 struct flow_dissector_key_ip enc_ip;
65 struct flow_dissector_key_enc_opts enc_opts;
67 struct flow_dissector_key_ports tp;
69 struct flow_dissector_key_ports tp_min;
70 struct flow_dissector_key_ports tp_max;
73 struct flow_dissector_key_ct ct;
74 struct flow_dissector_key_hash hash;
75 struct flow_dissector_key_num_of_vlans num_of_vlans;
76 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
78 struct fl_flow_mask_range {
79 unsigned short int start;
80 unsigned short int end;
84 struct fl_flow_key key;
85 struct fl_flow_mask_range range;
87 struct rhash_head ht_node;
89 struct rhashtable_params filter_ht_params;
90 struct flow_dissector dissector;
91 struct list_head filters;
92 struct rcu_work rwork;
93 struct list_head list;
97 struct fl_flow_tmplt {
98 struct fl_flow_key dummy_key;
99 struct fl_flow_key mask;
100 struct flow_dissector dissector;
101 struct tcf_chain *chain;
105 struct rhashtable ht;
106 spinlock_t masks_lock; /* Protect masks list */
107 struct list_head masks;
108 struct list_head hw_filters;
109 struct rcu_work rwork;
110 struct idr handle_idr;
113 struct cls_fl_filter {
114 struct fl_flow_mask *mask;
115 struct rhash_head ht_node;
116 struct fl_flow_key mkey;
117 struct tcf_exts exts;
118 struct tcf_result res;
119 struct fl_flow_key key;
120 struct list_head list;
121 struct list_head hw_list;
125 struct rcu_work rwork;
126 struct net_device *hw_dev;
127 /* Flower classifier is unlocked, which means that its reference counter
128 * can be changed concurrently without any kind of external
129 * synchronization. Use atomic reference counter to be concurrency-safe.
135 static const struct rhashtable_params mask_ht_params = {
136 .key_offset = offsetof(struct fl_flow_mask, key),
137 .key_len = sizeof(struct fl_flow_key),
138 .head_offset = offsetof(struct fl_flow_mask, ht_node),
139 .automatic_shrinking = true,
142 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
144 return mask->range.end - mask->range.start;
147 static void fl_mask_update_range(struct fl_flow_mask *mask)
149 const u8 *bytes = (const u8 *) &mask->key;
150 size_t size = sizeof(mask->key);
151 size_t i, first = 0, last;
153 for (i = 0; i < size; i++) {
160 for (i = size - 1; i != first; i--) {
166 mask->range.start = rounddown(first, sizeof(long));
167 mask->range.end = roundup(last + 1, sizeof(long));
170 static void *fl_key_get_start(struct fl_flow_key *key,
171 const struct fl_flow_mask *mask)
173 return (u8 *) key + mask->range.start;
176 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
177 struct fl_flow_mask *mask)
179 const long *lkey = fl_key_get_start(key, mask);
180 const long *lmask = fl_key_get_start(&mask->key, mask);
181 long *lmkey = fl_key_get_start(mkey, mask);
184 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
185 *lmkey++ = *lkey++ & *lmask++;
188 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
189 struct fl_flow_mask *mask)
191 const long *lmask = fl_key_get_start(&mask->key, mask);
197 ltmplt = fl_key_get_start(&tmplt->mask, mask);
198 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
199 if (~*ltmplt++ & *lmask++)
205 static void fl_clear_masked_range(struct fl_flow_key *key,
206 struct fl_flow_mask *mask)
208 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
211 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
212 struct fl_flow_key *key,
213 struct fl_flow_key *mkey)
215 u16 min_mask, max_mask, min_val, max_val;
217 min_mask = ntohs(filter->mask->key.tp_range.tp_min.dst);
218 max_mask = ntohs(filter->mask->key.tp_range.tp_max.dst);
219 min_val = ntohs(filter->key.tp_range.tp_min.dst);
220 max_val = ntohs(filter->key.tp_range.tp_max.dst);
222 if (min_mask && max_mask) {
223 if (ntohs(key->tp_range.tp.dst) < min_val ||
224 ntohs(key->tp_range.tp.dst) > max_val)
227 /* skb does not have min and max values */
228 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
229 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
234 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
235 struct fl_flow_key *key,
236 struct fl_flow_key *mkey)
238 u16 min_mask, max_mask, min_val, max_val;
240 min_mask = ntohs(filter->mask->key.tp_range.tp_min.src);
241 max_mask = ntohs(filter->mask->key.tp_range.tp_max.src);
242 min_val = ntohs(filter->key.tp_range.tp_min.src);
243 max_val = ntohs(filter->key.tp_range.tp_max.src);
245 if (min_mask && max_mask) {
246 if (ntohs(key->tp_range.tp.src) < min_val ||
247 ntohs(key->tp_range.tp.src) > max_val)
250 /* skb does not have min and max values */
251 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
252 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
257 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
258 struct fl_flow_key *mkey)
260 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
261 mask->filter_ht_params);
264 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
265 struct fl_flow_key *mkey,
266 struct fl_flow_key *key)
268 struct cls_fl_filter *filter, *f;
270 list_for_each_entry_rcu(filter, &mask->filters, list) {
271 if (!fl_range_port_dst_cmp(filter, key, mkey))
274 if (!fl_range_port_src_cmp(filter, key, mkey))
277 f = __fl_lookup(mask, mkey);
284 static noinline_for_stack
285 struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
287 struct fl_flow_key mkey;
289 fl_set_masked_key(&mkey, key, mask);
290 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
291 return fl_lookup_range(mask, &mkey, key);
293 return __fl_lookup(mask, &mkey);
296 static u16 fl_ct_info_to_flower_map[] = {
297 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
298 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
299 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
300 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
301 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
302 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED |
303 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
304 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
305 TCA_FLOWER_KEY_CT_FLAGS_RELATED |
306 TCA_FLOWER_KEY_CT_FLAGS_REPLY,
307 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
308 TCA_FLOWER_KEY_CT_FLAGS_NEW,
311 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
312 struct tcf_result *res)
314 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
315 bool post_ct = tc_skb_cb(skb)->post_ct;
316 u16 zone = tc_skb_cb(skb)->zone;
317 struct fl_flow_key skb_key;
318 struct fl_flow_mask *mask;
319 struct cls_fl_filter *f;
321 list_for_each_entry_rcu(mask, &head->masks, list) {
322 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
323 fl_clear_masked_range(&skb_key, mask);
325 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
326 /* skb_flow_dissect() does not set n_proto in case an unknown
327 * protocol, so do it rather here.
329 skb_key.basic.n_proto = skb_protocol(skb, false);
330 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
331 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
332 fl_ct_info_to_flower_map,
333 ARRAY_SIZE(fl_ct_info_to_flower_map),
335 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
336 skb_flow_dissect(skb, &mask->dissector, &skb_key,
337 FLOW_DISSECTOR_F_STOP_BEFORE_ENCAP);
339 f = fl_mask_lookup(mask, &skb_key);
340 if (f && !tc_skip_sw(f->flags)) {
342 return tcf_exts_exec(skb, &f->exts, res);
348 static int fl_init(struct tcf_proto *tp)
350 struct cls_fl_head *head;
352 head = kzalloc(sizeof(*head), GFP_KERNEL);
356 spin_lock_init(&head->masks_lock);
357 INIT_LIST_HEAD_RCU(&head->masks);
358 INIT_LIST_HEAD(&head->hw_filters);
359 rcu_assign_pointer(tp->root, head);
360 idr_init(&head->handle_idr);
362 return rhashtable_init(&head->ht, &mask_ht_params);
365 static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
367 /* temporary masks don't have their filters list and ht initialized */
368 if (mask_init_done) {
369 WARN_ON(!list_empty(&mask->filters));
370 rhashtable_destroy(&mask->ht);
375 static void fl_mask_free_work(struct work_struct *work)
377 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
378 struct fl_flow_mask, rwork);
380 fl_mask_free(mask, true);
383 static void fl_uninit_mask_free_work(struct work_struct *work)
385 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
386 struct fl_flow_mask, rwork);
388 fl_mask_free(mask, false);
391 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
393 if (!refcount_dec_and_test(&mask->refcnt))
396 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
398 spin_lock(&head->masks_lock);
399 list_del_rcu(&mask->list);
400 spin_unlock(&head->masks_lock);
402 tcf_queue_work(&mask->rwork, fl_mask_free_work);
407 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
409 /* Flower classifier only changes root pointer during init and destroy.
410 * Users must obtain reference to tcf_proto instance before calling its
411 * API, so tp->root pointer is protected from concurrent call to
412 * fl_destroy() by reference counting.
414 return rcu_dereference_raw(tp->root);
417 static void __fl_destroy_filter(struct cls_fl_filter *f)
419 tcf_exts_destroy(&f->exts);
420 tcf_exts_put_net(&f->exts);
424 static void fl_destroy_filter_work(struct work_struct *work)
426 struct cls_fl_filter *f = container_of(to_rcu_work(work),
427 struct cls_fl_filter, rwork);
429 __fl_destroy_filter(f);
432 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
433 bool rtnl_held, struct netlink_ext_ack *extack)
435 struct tcf_block *block = tp->chain->block;
436 struct flow_cls_offload cls_flower = {};
438 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
439 cls_flower.command = FLOW_CLS_DESTROY;
440 cls_flower.cookie = (unsigned long) f;
442 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
443 &f->flags, &f->in_hw_count, rtnl_held);
447 static int fl_hw_replace_filter(struct tcf_proto *tp,
448 struct cls_fl_filter *f, bool rtnl_held,
449 struct netlink_ext_ack *extack)
451 struct tcf_block *block = tp->chain->block;
452 struct flow_cls_offload cls_flower = {};
453 bool skip_sw = tc_skip_sw(f->flags);
456 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
457 if (!cls_flower.rule)
460 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
461 cls_flower.command = FLOW_CLS_REPLACE;
462 cls_flower.cookie = (unsigned long) f;
463 cls_flower.rule->match.dissector = &f->mask->dissector;
464 cls_flower.rule->match.mask = &f->mask->key;
465 cls_flower.rule->match.key = &f->mkey;
466 cls_flower.classid = f->res.classid;
468 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
469 cls_flower.common.extack);
471 kfree(cls_flower.rule);
473 return skip_sw ? err : 0;
476 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
477 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
478 tc_cleanup_offload_action(&cls_flower.rule->action);
479 kfree(cls_flower.rule);
482 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
486 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
492 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
495 struct tcf_block *block = tp->chain->block;
496 struct flow_cls_offload cls_flower = {};
498 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
499 cls_flower.command = FLOW_CLS_STATS;
500 cls_flower.cookie = (unsigned long) f;
501 cls_flower.classid = f->res.classid;
503 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
506 tcf_exts_hw_stats_update(&f->exts, cls_flower.stats.bytes,
507 cls_flower.stats.pkts,
508 cls_flower.stats.drops,
509 cls_flower.stats.lastused,
510 cls_flower.stats.used_hw_stats,
511 cls_flower.stats.used_hw_stats_valid);
514 static void __fl_put(struct cls_fl_filter *f)
516 if (!refcount_dec_and_test(&f->refcnt))
519 if (tcf_exts_get_net(&f->exts))
520 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
522 __fl_destroy_filter(f);
525 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
527 struct cls_fl_filter *f;
530 f = idr_find(&head->handle_idr, handle);
531 if (f && !refcount_inc_not_zero(&f->refcnt))
538 static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
539 bool *last, bool rtnl_held,
540 struct netlink_ext_ack *extack)
542 struct cls_fl_head *head = fl_head_dereference(tp);
546 spin_lock(&tp->lock);
548 spin_unlock(&tp->lock);
553 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
554 f->mask->filter_ht_params);
555 idr_remove(&head->handle_idr, f->handle);
556 list_del_rcu(&f->list);
557 spin_unlock(&tp->lock);
559 *last = fl_mask_put(head, f->mask);
560 if (!tc_skip_hw(f->flags))
561 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
562 tcf_unbind_filter(tp, &f->res);
568 static void fl_destroy_sleepable(struct work_struct *work)
570 struct cls_fl_head *head = container_of(to_rcu_work(work),
574 rhashtable_destroy(&head->ht);
576 module_put(THIS_MODULE);
579 static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
580 struct netlink_ext_ack *extack)
582 struct cls_fl_head *head = fl_head_dereference(tp);
583 struct fl_flow_mask *mask, *next_mask;
584 struct cls_fl_filter *f, *next;
587 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
588 list_for_each_entry_safe(f, next, &mask->filters, list) {
589 __fl_delete(tp, f, &last, rtnl_held, extack);
594 idr_destroy(&head->handle_idr);
596 __module_get(THIS_MODULE);
597 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
600 static void fl_put(struct tcf_proto *tp, void *arg)
602 struct cls_fl_filter *f = arg;
607 static void *fl_get(struct tcf_proto *tp, u32 handle)
609 struct cls_fl_head *head = fl_head_dereference(tp);
611 return __fl_get(head, handle);
614 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
615 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
616 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
617 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
619 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
620 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
621 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
622 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
623 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
624 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
625 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
626 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
627 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
628 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
629 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
630 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
631 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
632 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
633 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
634 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
635 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
636 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
637 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
638 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
639 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
640 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
641 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
642 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
643 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
644 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
645 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
646 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
647 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
648 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
649 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
650 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
651 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
652 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
653 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
654 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
655 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
656 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
657 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
658 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
659 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
660 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
661 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
662 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
663 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
666 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
667 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
668 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
669 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
671 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
672 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
673 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
674 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
675 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
676 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
678 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
679 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
680 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
681 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
683 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
684 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
685 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
686 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
687 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
688 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
689 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
691 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
692 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
693 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
694 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
695 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
696 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
697 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
698 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
699 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
700 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
701 [TCA_FLOWER_KEY_CT_STATE] =
702 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
703 [TCA_FLOWER_KEY_CT_STATE_MASK] =
704 NLA_POLICY_MASK(NLA_U16, TCA_FLOWER_KEY_CT_FLAGS_MASK),
705 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
706 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
707 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
708 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
709 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
710 .len = 128 / BITS_PER_BYTE },
711 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
712 .len = 128 / BITS_PER_BYTE },
713 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
714 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
715 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
716 [TCA_FLOWER_KEY_NUM_OF_VLANS] = { .type = NLA_U8 },
720 static const struct nla_policy
721 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
722 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
723 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
724 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
725 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
726 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
727 [TCA_FLOWER_KEY_ENC_OPTS_GTP] = { .type = NLA_NESTED },
730 static const struct nla_policy
731 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
732 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
733 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
734 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
738 static const struct nla_policy
739 vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
740 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
743 static const struct nla_policy
744 erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
745 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
746 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
747 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
748 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
751 static const struct nla_policy
752 gtp_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1] = {
753 [TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] = { .type = NLA_U8 },
754 [TCA_FLOWER_KEY_ENC_OPT_GTP_QFI] = { .type = NLA_U8 },
757 static const struct nla_policy
758 mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
759 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
760 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
761 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
762 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
763 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
766 static void fl_set_key_val(struct nlattr **tb,
767 void *val, int val_type,
768 void *mask, int mask_type, int len)
772 nla_memcpy(val, tb[val_type], len);
773 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
774 memset(mask, 0xff, len);
776 nla_memcpy(mask, tb[mask_type], len);
779 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
780 struct fl_flow_key *mask,
781 struct netlink_ext_ack *extack)
783 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
784 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
785 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
786 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
787 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
788 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
789 fl_set_key_val(tb, &key->tp_range.tp_min.src,
790 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
791 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
792 fl_set_key_val(tb, &key->tp_range.tp_max.src,
793 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
794 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
796 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
797 ntohs(key->tp_range.tp_max.dst) <=
798 ntohs(key->tp_range.tp_min.dst)) {
799 NL_SET_ERR_MSG_ATTR(extack,
800 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
801 "Invalid destination port range (min must be strictly smaller than max)");
804 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
805 ntohs(key->tp_range.tp_max.src) <=
806 ntohs(key->tp_range.tp_min.src)) {
807 NL_SET_ERR_MSG_ATTR(extack,
808 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
809 "Invalid source port range (min must be strictly smaller than max)");
816 static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
817 struct flow_dissector_key_mpls *key_val,
818 struct flow_dissector_key_mpls *key_mask,
819 struct netlink_ext_ack *extack)
821 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
822 struct flow_dissector_mpls_lse *lse_mask;
823 struct flow_dissector_mpls_lse *lse_val;
828 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
829 mpls_stack_entry_policy, extack);
833 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
834 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
838 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
840 /* LSE depth starts at 1, for consistency with terminology used by
841 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
843 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
844 NL_SET_ERR_MSG_ATTR(extack,
845 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
846 "Invalid MPLS depth");
849 lse_index = depth - 1;
851 dissector_set_mpls_lse(key_val, lse_index);
852 dissector_set_mpls_lse(key_mask, lse_index);
854 lse_val = &key_val->ls[lse_index];
855 lse_mask = &key_mask->ls[lse_index];
857 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
858 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
859 lse_mask->mpls_ttl = MPLS_TTL_MASK;
861 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
862 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
864 if (bos & ~MPLS_BOS_MASK) {
865 NL_SET_ERR_MSG_ATTR(extack,
866 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
867 "Bottom Of Stack (BOS) must be 0 or 1");
870 lse_val->mpls_bos = bos;
871 lse_mask->mpls_bos = MPLS_BOS_MASK;
873 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
874 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
876 if (tc & ~MPLS_TC_MASK) {
877 NL_SET_ERR_MSG_ATTR(extack,
878 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
879 "Traffic Class (TC) must be between 0 and 7");
882 lse_val->mpls_tc = tc;
883 lse_mask->mpls_tc = MPLS_TC_MASK;
885 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
886 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
888 if (label & ~MPLS_LABEL_MASK) {
889 NL_SET_ERR_MSG_ATTR(extack,
890 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
891 "Label must be between 0 and 1048575");
894 lse_val->mpls_label = label;
895 lse_mask->mpls_label = MPLS_LABEL_MASK;
901 static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
902 struct flow_dissector_key_mpls *key_val,
903 struct flow_dissector_key_mpls *key_mask,
904 struct netlink_ext_ack *extack)
906 struct nlattr *nla_lse;
910 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
911 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
912 "NLA_F_NESTED is missing");
916 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
917 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
918 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
919 "Invalid MPLS option type");
923 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
928 NL_SET_ERR_MSG(extack,
929 "Bytes leftover after parsing MPLS options");
936 static int fl_set_key_mpls(struct nlattr **tb,
937 struct flow_dissector_key_mpls *key_val,
938 struct flow_dissector_key_mpls *key_mask,
939 struct netlink_ext_ack *extack)
941 struct flow_dissector_mpls_lse *lse_mask;
942 struct flow_dissector_mpls_lse *lse_val;
944 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
945 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
946 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
947 tb[TCA_FLOWER_KEY_MPLS_TC] ||
948 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
949 NL_SET_ERR_MSG_ATTR(extack,
950 tb[TCA_FLOWER_KEY_MPLS_OPTS],
951 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
955 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
956 key_val, key_mask, extack);
959 lse_val = &key_val->ls[0];
960 lse_mask = &key_mask->ls[0];
962 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
963 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
964 lse_mask->mpls_ttl = MPLS_TTL_MASK;
965 dissector_set_mpls_lse(key_val, 0);
966 dissector_set_mpls_lse(key_mask, 0);
968 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
969 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
971 if (bos & ~MPLS_BOS_MASK) {
972 NL_SET_ERR_MSG_ATTR(extack,
973 tb[TCA_FLOWER_KEY_MPLS_BOS],
974 "Bottom Of Stack (BOS) must be 0 or 1");
977 lse_val->mpls_bos = bos;
978 lse_mask->mpls_bos = MPLS_BOS_MASK;
979 dissector_set_mpls_lse(key_val, 0);
980 dissector_set_mpls_lse(key_mask, 0);
982 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
983 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
985 if (tc & ~MPLS_TC_MASK) {
986 NL_SET_ERR_MSG_ATTR(extack,
987 tb[TCA_FLOWER_KEY_MPLS_TC],
988 "Traffic Class (TC) must be between 0 and 7");
991 lse_val->mpls_tc = tc;
992 lse_mask->mpls_tc = MPLS_TC_MASK;
993 dissector_set_mpls_lse(key_val, 0);
994 dissector_set_mpls_lse(key_mask, 0);
996 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
997 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
999 if (label & ~MPLS_LABEL_MASK) {
1000 NL_SET_ERR_MSG_ATTR(extack,
1001 tb[TCA_FLOWER_KEY_MPLS_LABEL],
1002 "Label must be between 0 and 1048575");
1005 lse_val->mpls_label = label;
1006 lse_mask->mpls_label = MPLS_LABEL_MASK;
1007 dissector_set_mpls_lse(key_val, 0);
1008 dissector_set_mpls_lse(key_mask, 0);
1013 static void fl_set_key_vlan(struct nlattr **tb,
1015 int vlan_id_key, int vlan_prio_key,
1016 int vlan_next_eth_type_key,
1017 struct flow_dissector_key_vlan *key_val,
1018 struct flow_dissector_key_vlan *key_mask)
1020 #define VLAN_PRIORITY_MASK 0x7
1022 if (tb[vlan_id_key]) {
1024 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
1025 key_mask->vlan_id = VLAN_VID_MASK;
1027 if (tb[vlan_prio_key]) {
1028 key_val->vlan_priority =
1029 nla_get_u8(tb[vlan_prio_key]) &
1031 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1034 key_val->vlan_tpid = ethertype;
1035 key_mask->vlan_tpid = cpu_to_be16(~0);
1037 if (tb[vlan_next_eth_type_key]) {
1038 key_val->vlan_eth_type =
1039 nla_get_be16(tb[vlan_next_eth_type_key]);
1040 key_mask->vlan_eth_type = cpu_to_be16(~0);
1044 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1045 u32 *dissector_key, u32 *dissector_mask,
1046 u32 flower_flag_bit, u32 dissector_flag_bit)
1048 if (flower_mask & flower_flag_bit) {
1049 *dissector_mask |= dissector_flag_bit;
1050 if (flower_key & flower_flag_bit)
1051 *dissector_key |= dissector_flag_bit;
1055 static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1056 u32 *flags_mask, struct netlink_ext_ack *extack)
1060 /* mask is mandatory for flags */
1061 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1062 NL_SET_ERR_MSG(extack, "Missing flags mask");
1066 key = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS]));
1067 mask = be32_to_cpu(nla_get_be32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
1072 fl_set_key_flag(key, mask, flags_key, flags_mask,
1073 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1074 fl_set_key_flag(key, mask, flags_key, flags_mask,
1075 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1076 FLOW_DIS_FIRST_FRAG);
1081 static void fl_set_key_ip(struct nlattr **tb, bool encap,
1082 struct flow_dissector_key_ip *key,
1083 struct flow_dissector_key_ip *mask)
1085 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1086 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1087 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1088 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1090 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1091 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
1094 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1095 int depth, int option_len,
1096 struct netlink_ext_ack *extack)
1098 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1099 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1100 struct geneve_opt *opt;
1101 int err, data_len = 0;
1103 if (option_len > sizeof(struct geneve_opt))
1104 data_len = option_len - sizeof(struct geneve_opt);
1106 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1107 memset(opt, 0xff, option_len);
1108 opt->length = data_len / 4;
1113 /* If no mask has been prodived we assume an exact match. */
1115 return sizeof(struct geneve_opt) + data_len;
1117 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1118 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1122 err = nla_parse_nested_deprecated(tb,
1123 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1124 nla, geneve_opt_policy, extack);
1128 /* We are not allowed to omit any of CLASS, TYPE or DATA
1129 * fields from the key.
1132 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1133 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1134 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1135 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1139 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1142 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1143 int new_len = key->enc_opts.len;
1145 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1146 data_len = nla_len(data);
1148 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1152 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1156 new_len += sizeof(struct geneve_opt) + data_len;
1157 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1158 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1159 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1162 opt->length = data_len / 4;
1163 memcpy(opt->opt_data, nla_data(data), data_len);
1166 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1167 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1168 opt->opt_class = nla_get_be16(class);
1171 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1172 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1173 opt->type = nla_get_u8(type);
1176 return sizeof(struct geneve_opt) + data_len;
1179 static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1180 int depth, int option_len,
1181 struct netlink_ext_ack *extack)
1183 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1184 struct vxlan_metadata *md;
1187 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1188 memset(md, 0xff, sizeof(*md));
1193 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1194 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1198 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1199 vxlan_opt_policy, extack);
1203 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1204 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1208 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1209 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
1210 md->gbp &= VXLAN_GBP_MASK;
1216 static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1217 int depth, int option_len,
1218 struct netlink_ext_ack *extack)
1220 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1221 struct erspan_metadata *md;
1224 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1225 memset(md, 0xff, sizeof(*md));
1231 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1232 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1236 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1237 erspan_opt_policy, extack);
1241 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1242 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1246 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1247 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1249 if (md->version == 1) {
1250 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1251 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1254 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1255 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1256 memset(&md->u, 0x00, sizeof(md->u));
1257 md->u.index = nla_get_be32(nla);
1259 } else if (md->version == 2) {
1260 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1261 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1262 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1265 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1266 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1267 md->u.md2.dir = nla_get_u8(nla);
1269 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1270 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1271 set_hwid(&md->u.md2, nla_get_u8(nla));
1274 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1281 static int fl_set_gtp_opt(const struct nlattr *nla, struct fl_flow_key *key,
1282 int depth, int option_len,
1283 struct netlink_ext_ack *extack)
1285 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GTP_MAX + 1];
1286 struct gtp_pdu_session_info *sinfo;
1287 u8 len = key->enc_opts.len;
1290 sinfo = (struct gtp_pdu_session_info *)&key->enc_opts.data[len];
1291 memset(sinfo, 0xff, option_len);
1294 return sizeof(*sinfo);
1296 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GTP) {
1297 NL_SET_ERR_MSG_MOD(extack, "Non-gtp option type for mask");
1301 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GTP_MAX, nla,
1302 gtp_opt_policy, extack);
1307 (!tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE] ||
1308 !tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])) {
1309 NL_SET_ERR_MSG_MOD(extack,
1310 "Missing tunnel key gtp option pdu type or qfi");
1314 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE])
1316 nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE]);
1318 if (tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI])
1319 sinfo->qfi = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_GTP_QFI]);
1321 return sizeof(*sinfo);
1324 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1325 struct fl_flow_key *mask,
1326 struct netlink_ext_ack *extack)
1328 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1329 int err, option_len, key_depth, msk_depth = 0;
1331 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1332 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1333 enc_opts_policy, extack);
1337 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1339 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1340 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1341 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1342 enc_opts_policy, extack);
1346 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1347 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1348 if (!nla_ok(nla_opt_msk, msk_depth)) {
1349 NL_SET_ERR_MSG(extack, "Invalid nested attribute for masks");
1354 nla_for_each_attr(nla_opt_key, nla_enc_key,
1355 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1356 switch (nla_type(nla_opt_key)) {
1357 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1358 if (key->enc_opts.dst_opt_type &&
1359 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1360 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1364 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1365 option_len = fl_set_geneve_opt(nla_opt_key, key,
1366 key_depth, option_len,
1371 key->enc_opts.len += option_len;
1372 /* At the same time we need to parse through the mask
1373 * in order to verify exact and mask attribute lengths.
1375 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1376 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1377 msk_depth, option_len,
1382 mask->enc_opts.len += option_len;
1383 if (key->enc_opts.len != mask->enc_opts.len) {
1384 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1388 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1389 if (key->enc_opts.dst_opt_type) {
1390 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1394 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1395 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1396 key_depth, option_len,
1401 key->enc_opts.len += option_len;
1402 /* At the same time we need to parse through the mask
1403 * in order to verify exact and mask attribute lengths.
1405 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1406 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1407 msk_depth, option_len,
1412 mask->enc_opts.len += option_len;
1413 if (key->enc_opts.len != mask->enc_opts.len) {
1414 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1418 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1419 if (key->enc_opts.dst_opt_type) {
1420 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1424 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1425 option_len = fl_set_erspan_opt(nla_opt_key, key,
1426 key_depth, option_len,
1431 key->enc_opts.len += option_len;
1432 /* At the same time we need to parse through the mask
1433 * in order to verify exact and mask attribute lengths.
1435 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1436 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1437 msk_depth, option_len,
1442 mask->enc_opts.len += option_len;
1443 if (key->enc_opts.len != mask->enc_opts.len) {
1444 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1448 case TCA_FLOWER_KEY_ENC_OPTS_GTP:
1449 if (key->enc_opts.dst_opt_type) {
1450 NL_SET_ERR_MSG_MOD(extack,
1451 "Duplicate type for gtp options");
1455 key->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1456 option_len = fl_set_gtp_opt(nla_opt_key, key,
1457 key_depth, option_len,
1462 key->enc_opts.len += option_len;
1463 /* At the same time we need to parse through the mask
1464 * in order to verify exact and mask attribute lengths.
1466 mask->enc_opts.dst_opt_type = TUNNEL_GTP_OPT;
1467 option_len = fl_set_gtp_opt(nla_opt_msk, mask,
1468 msk_depth, option_len,
1473 mask->enc_opts.len += option_len;
1474 if (key->enc_opts.len != mask->enc_opts.len) {
1475 NL_SET_ERR_MSG_MOD(extack,
1476 "Key and mask miss aligned");
1481 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1488 if (!nla_ok(nla_opt_msk, msk_depth)) {
1489 NL_SET_ERR_MSG(extack, "A mask attribute is invalid");
1492 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1498 static int fl_validate_ct_state(u16 state, struct nlattr *tb,
1499 struct netlink_ext_ack *extack)
1501 if (state && !(state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED)) {
1502 NL_SET_ERR_MSG_ATTR(extack, tb,
1503 "no trk, so no other flag can be set");
1507 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1508 state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) {
1509 NL_SET_ERR_MSG_ATTR(extack, tb,
1510 "new and est are mutually exclusive");
1514 if (state & TCA_FLOWER_KEY_CT_FLAGS_INVALID &&
1515 state & ~(TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
1516 TCA_FLOWER_KEY_CT_FLAGS_INVALID)) {
1517 NL_SET_ERR_MSG_ATTR(extack, tb,
1518 "when inv is set, only trk may be set");
1522 if (state & TCA_FLOWER_KEY_CT_FLAGS_NEW &&
1523 state & TCA_FLOWER_KEY_CT_FLAGS_REPLY) {
1524 NL_SET_ERR_MSG_ATTR(extack, tb,
1525 "new and rpl are mutually exclusive");
1532 static int fl_set_key_ct(struct nlattr **tb,
1533 struct flow_dissector_key_ct *key,
1534 struct flow_dissector_key_ct *mask,
1535 struct netlink_ext_ack *extack)
1537 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1540 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1541 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1544 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1545 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1546 sizeof(key->ct_state));
1548 err = fl_validate_ct_state(key->ct_state & mask->ct_state,
1549 tb[TCA_FLOWER_KEY_CT_STATE_MASK],
1555 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1556 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1557 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1560 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1561 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1562 sizeof(key->ct_zone));
1564 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1565 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1566 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1569 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1570 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1571 sizeof(key->ct_mark));
1573 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1574 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1575 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1578 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1579 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1580 sizeof(key->ct_labels));
1586 static bool is_vlan_key(struct nlattr *tb, __be16 *ethertype,
1587 struct fl_flow_key *key, struct fl_flow_key *mask,
1590 const bool good_num_of_vlans = key->num_of_vlans.num_of_vlans > vthresh;
1594 return good_num_of_vlans;
1597 *ethertype = nla_get_be16(tb);
1598 if (good_num_of_vlans || eth_type_vlan(*ethertype))
1601 key->basic.n_proto = *ethertype;
1602 mask->basic.n_proto = cpu_to_be16(~0);
1606 static int fl_set_key(struct net *net, struct nlattr **tb,
1607 struct fl_flow_key *key, struct fl_flow_key *mask,
1608 struct netlink_ext_ack *extack)
1613 if (tb[TCA_FLOWER_INDEV]) {
1614 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1617 key->meta.ingress_ifindex = err;
1618 mask->meta.ingress_ifindex = 0xffffffff;
1621 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1622 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1623 sizeof(key->eth.dst));
1624 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1625 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1626 sizeof(key->eth.src));
1627 fl_set_key_val(tb, &key->num_of_vlans,
1628 TCA_FLOWER_KEY_NUM_OF_VLANS,
1629 &mask->num_of_vlans,
1631 sizeof(key->num_of_vlans));
1633 if (is_vlan_key(tb[TCA_FLOWER_KEY_ETH_TYPE], ðertype, key, mask, 0)) {
1634 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1635 TCA_FLOWER_KEY_VLAN_PRIO,
1636 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1637 &key->vlan, &mask->vlan);
1639 if (is_vlan_key(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE],
1640 ðertype, key, mask, 1)) {
1641 fl_set_key_vlan(tb, ethertype,
1642 TCA_FLOWER_KEY_CVLAN_ID,
1643 TCA_FLOWER_KEY_CVLAN_PRIO,
1644 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1645 &key->cvlan, &mask->cvlan);
1646 fl_set_key_val(tb, &key->basic.n_proto,
1647 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1648 &mask->basic.n_proto,
1650 sizeof(key->basic.n_proto));
1654 if (key->basic.n_proto == htons(ETH_P_IP) ||
1655 key->basic.n_proto == htons(ETH_P_IPV6)) {
1656 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1657 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1658 sizeof(key->basic.ip_proto));
1659 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1662 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1663 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1664 mask->control.addr_type = ~0;
1665 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1666 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1667 sizeof(key->ipv4.src));
1668 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1669 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1670 sizeof(key->ipv4.dst));
1671 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1672 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1673 mask->control.addr_type = ~0;
1674 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1675 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1676 sizeof(key->ipv6.src));
1677 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1678 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1679 sizeof(key->ipv6.dst));
1682 if (key->basic.ip_proto == IPPROTO_TCP) {
1683 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1684 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1685 sizeof(key->tp.src));
1686 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1687 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1688 sizeof(key->tp.dst));
1689 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1690 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1691 sizeof(key->tcp.flags));
1692 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1693 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1694 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1695 sizeof(key->tp.src));
1696 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1697 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1698 sizeof(key->tp.dst));
1699 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1700 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1701 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1702 sizeof(key->tp.src));
1703 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1704 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1705 sizeof(key->tp.dst));
1706 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1707 key->basic.ip_proto == IPPROTO_ICMP) {
1708 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1710 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1711 sizeof(key->icmp.type));
1712 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1714 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1715 sizeof(key->icmp.code));
1716 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1717 key->basic.ip_proto == IPPROTO_ICMPV6) {
1718 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1720 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1721 sizeof(key->icmp.type));
1722 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1724 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1725 sizeof(key->icmp.code));
1726 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1727 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1728 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1731 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1732 key->basic.n_proto == htons(ETH_P_RARP)) {
1733 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1734 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1735 sizeof(key->arp.sip));
1736 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1737 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1738 sizeof(key->arp.tip));
1739 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1740 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1741 sizeof(key->arp.op));
1742 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1743 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1744 sizeof(key->arp.sha));
1745 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1746 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1747 sizeof(key->arp.tha));
1750 if (key->basic.ip_proto == IPPROTO_TCP ||
1751 key->basic.ip_proto == IPPROTO_UDP ||
1752 key->basic.ip_proto == IPPROTO_SCTP) {
1753 ret = fl_set_key_port_range(tb, key, mask, extack);
1758 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1759 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1760 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1761 mask->enc_control.addr_type = ~0;
1762 fl_set_key_val(tb, &key->enc_ipv4.src,
1763 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1764 &mask->enc_ipv4.src,
1765 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1766 sizeof(key->enc_ipv4.src));
1767 fl_set_key_val(tb, &key->enc_ipv4.dst,
1768 TCA_FLOWER_KEY_ENC_IPV4_DST,
1769 &mask->enc_ipv4.dst,
1770 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1771 sizeof(key->enc_ipv4.dst));
1774 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1775 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1776 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1777 mask->enc_control.addr_type = ~0;
1778 fl_set_key_val(tb, &key->enc_ipv6.src,
1779 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1780 &mask->enc_ipv6.src,
1781 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1782 sizeof(key->enc_ipv6.src));
1783 fl_set_key_val(tb, &key->enc_ipv6.dst,
1784 TCA_FLOWER_KEY_ENC_IPV6_DST,
1785 &mask->enc_ipv6.dst,
1786 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1787 sizeof(key->enc_ipv6.dst));
1790 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1791 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1792 sizeof(key->enc_key_id.keyid));
1794 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1795 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1796 sizeof(key->enc_tp.src));
1798 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1799 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1800 sizeof(key->enc_tp.dst));
1802 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1804 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1805 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1806 sizeof(key->hash.hash));
1808 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1809 ret = fl_set_enc_opt(tb, key, mask, extack);
1814 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1818 if (tb[TCA_FLOWER_KEY_FLAGS])
1819 ret = fl_set_key_flags(tb, &key->control.flags,
1820 &mask->control.flags, extack);
1825 static void fl_mask_copy(struct fl_flow_mask *dst,
1826 struct fl_flow_mask *src)
1828 const void *psrc = fl_key_get_start(&src->key, src);
1829 void *pdst = fl_key_get_start(&dst->key, src);
1831 memcpy(pdst, psrc, fl_mask_range(src));
1832 dst->range = src->range;
1835 static const struct rhashtable_params fl_ht_params = {
1836 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1837 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1838 .automatic_shrinking = true,
1841 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1843 mask->filter_ht_params = fl_ht_params;
1844 mask->filter_ht_params.key_len = fl_mask_range(mask);
1845 mask->filter_ht_params.key_offset += mask->range.start;
1847 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1850 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1851 #define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
1853 #define FL_KEY_IS_MASKED(mask, member) \
1854 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1855 0, FL_KEY_MEMBER_SIZE(member)) \
1857 #define FL_KEY_SET(keys, cnt, id, member) \
1859 keys[cnt].key_id = id; \
1860 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1864 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1866 if (FL_KEY_IS_MASKED(mask, member)) \
1867 FL_KEY_SET(keys, cnt, id, member); \
1870 static void fl_init_dissector(struct flow_dissector *dissector,
1871 struct fl_flow_key *mask)
1873 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1876 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1877 FLOW_DISSECTOR_KEY_META, meta);
1878 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1879 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1880 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1881 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1882 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1883 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1884 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1885 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1886 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1887 FLOW_DISSECTOR_KEY_PORTS, tp);
1888 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1889 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
1890 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1891 FLOW_DISSECTOR_KEY_IP, ip);
1892 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1893 FLOW_DISSECTOR_KEY_TCP, tcp);
1894 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1895 FLOW_DISSECTOR_KEY_ICMP, icmp);
1896 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1897 FLOW_DISSECTOR_KEY_ARP, arp);
1898 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1899 FLOW_DISSECTOR_KEY_MPLS, mpls);
1900 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1901 FLOW_DISSECTOR_KEY_VLAN, vlan);
1902 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1903 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1904 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1905 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1906 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1907 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1908 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1909 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1910 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1911 FL_KEY_IS_MASKED(mask, enc_ipv6))
1912 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1914 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1915 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1916 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1917 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1918 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1919 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1920 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1921 FLOW_DISSECTOR_KEY_CT, ct);
1922 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1923 FLOW_DISSECTOR_KEY_HASH, hash);
1924 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1925 FLOW_DISSECTOR_KEY_NUM_OF_VLANS, num_of_vlans);
1927 skb_flow_dissector_init(dissector, keys, cnt);
1930 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1931 struct fl_flow_mask *mask)
1933 struct fl_flow_mask *newmask;
1936 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1938 return ERR_PTR(-ENOMEM);
1940 fl_mask_copy(newmask, mask);
1942 if ((newmask->key.tp_range.tp_min.dst &&
1943 newmask->key.tp_range.tp_max.dst) ||
1944 (newmask->key.tp_range.tp_min.src &&
1945 newmask->key.tp_range.tp_max.src))
1946 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1948 err = fl_init_mask_hashtable(newmask);
1952 fl_init_dissector(&newmask->dissector, &newmask->key);
1954 INIT_LIST_HEAD_RCU(&newmask->filters);
1956 refcount_set(&newmask->refcnt, 1);
1957 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1958 &newmask->ht_node, mask_ht_params);
1960 goto errout_destroy;
1962 spin_lock(&head->masks_lock);
1963 list_add_tail_rcu(&newmask->list, &head->masks);
1964 spin_unlock(&head->masks_lock);
1969 rhashtable_destroy(&newmask->ht);
1973 return ERR_PTR(err);
1976 static int fl_check_assign_mask(struct cls_fl_head *head,
1977 struct cls_fl_filter *fnew,
1978 struct cls_fl_filter *fold,
1979 struct fl_flow_mask *mask)
1981 struct fl_flow_mask *newmask;
1986 /* Insert mask as temporary node to prevent concurrent creation of mask
1987 * with same key. Any concurrent lookups with same key will return
1988 * -EAGAIN because mask's refcnt is zero.
1990 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1998 goto errout_cleanup;
2001 newmask = fl_create_new_mask(head, mask);
2002 if (IS_ERR(newmask)) {
2003 ret = PTR_ERR(newmask);
2004 goto errout_cleanup;
2007 fnew->mask = newmask;
2009 } else if (IS_ERR(fnew->mask)) {
2010 ret = PTR_ERR(fnew->mask);
2011 } else if (fold && fold->mask != fnew->mask) {
2013 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
2014 /* Mask was deleted concurrently, try again */
2021 rhashtable_remove_fast(&head->ht, &mask->ht_node,
2026 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
2027 struct cls_fl_filter *f, struct fl_flow_mask *mask,
2028 unsigned long base, struct nlattr **tb,
2030 struct fl_flow_tmplt *tmplt,
2031 u32 flags, u32 fl_flags,
2032 struct netlink_ext_ack *extack)
2036 err = tcf_exts_validate_ex(net, tp, tb, est, &f->exts, flags,
2041 if (tb[TCA_FLOWER_CLASSID]) {
2042 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
2043 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2045 tcf_bind_filter(tp, &f->res, base);
2046 if (flags & TCA_ACT_FLAGS_NO_RTNL)
2050 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
2054 fl_mask_update_range(mask);
2055 fl_set_masked_key(&f->mkey, &f->key, mask);
2057 if (!fl_mask_fits_tmplt(tmplt, mask)) {
2058 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
2065 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
2066 struct cls_fl_filter *fold,
2069 struct fl_flow_mask *mask = fnew->mask;
2072 err = rhashtable_lookup_insert_fast(&mask->ht,
2074 mask->filter_ht_params);
2077 /* It is okay if filter with same key exists when
2080 return fold && err == -EEXIST ? 0 : err;
2087 static int fl_change(struct net *net, struct sk_buff *in_skb,
2088 struct tcf_proto *tp, unsigned long base,
2089 u32 handle, struct nlattr **tca,
2090 void **arg, u32 flags,
2091 struct netlink_ext_ack *extack)
2093 struct cls_fl_head *head = fl_head_dereference(tp);
2094 bool rtnl_held = !(flags & TCA_ACT_FLAGS_NO_RTNL);
2095 struct cls_fl_filter *fold = *arg;
2096 struct cls_fl_filter *fnew;
2097 struct fl_flow_mask *mask;
2102 if (!tca[TCA_OPTIONS]) {
2107 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
2113 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2116 goto errout_mask_alloc;
2119 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2120 tca[TCA_OPTIONS], fl_policy, NULL);
2124 if (fold && handle && fold->handle != handle) {
2129 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
2134 INIT_LIST_HEAD(&fnew->hw_list);
2135 refcount_set(&fnew->refcnt, 1);
2137 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
2141 if (tb[TCA_FLOWER_FLAGS]) {
2142 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
2144 if (!tc_flags_valid(fnew->flags)) {
2150 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE],
2151 tp->chain->tmplt_priv, flags, fnew->flags,
2156 err = fl_check_assign_mask(head, fnew, fold, mask);
2160 err = fl_ht_insert_unique(fnew, fold, &in_ht);
2164 if (!tc_skip_hw(fnew->flags)) {
2165 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
2170 if (!tc_in_hw(fnew->flags))
2171 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
2173 spin_lock(&tp->lock);
2175 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2176 * proto again or create new one, if necessary.
2184 /* Fold filter was deleted concurrently. Retry lookup. */
2185 if (fold->deleted) {
2190 fnew->handle = handle;
2193 struct rhashtable_params params =
2194 fnew->mask->filter_ht_params;
2196 err = rhashtable_insert_fast(&fnew->mask->ht,
2204 refcount_inc(&fnew->refcnt);
2205 rhashtable_remove_fast(&fold->mask->ht,
2207 fold->mask->filter_ht_params);
2208 idr_replace(&head->handle_idr, fnew, fnew->handle);
2209 list_replace_rcu(&fold->list, &fnew->list);
2210 fold->deleted = true;
2212 spin_unlock(&tp->lock);
2214 fl_mask_put(head, fold->mask);
2215 if (!tc_skip_hw(fold->flags))
2216 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
2217 tcf_unbind_filter(tp, &fold->res);
2218 /* Caller holds reference to fold, so refcnt is always > 0
2221 refcount_dec(&fold->refcnt);
2225 /* user specifies a handle and it doesn't exist */
2226 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2227 handle, GFP_ATOMIC);
2229 /* Filter with specified handle was concurrently
2230 * inserted after initial check in cls_api. This is not
2231 * necessarily an error if NLM_F_EXCL is not set in
2232 * message flags. Returning EAGAIN will cause cls_api to
2233 * try to update concurrently inserted rule.
2239 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2240 INT_MAX, GFP_ATOMIC);
2245 refcount_inc(&fnew->refcnt);
2246 fnew->handle = handle;
2247 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
2248 spin_unlock(&tp->lock);
2254 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2258 spin_lock(&tp->lock);
2260 fnew->deleted = true;
2261 spin_unlock(&tp->lock);
2262 if (!tc_skip_hw(fnew->flags))
2263 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
2265 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2266 fnew->mask->filter_ht_params);
2268 fl_mask_put(head, fnew->mask);
2274 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2281 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
2282 bool rtnl_held, struct netlink_ext_ack *extack)
2284 struct cls_fl_head *head = fl_head_dereference(tp);
2285 struct cls_fl_filter *f = arg;
2289 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
2290 *last = list_empty(&head->masks);
2296 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2299 struct cls_fl_head *head = fl_head_dereference(tp);
2300 unsigned long id = arg->cookie, tmp;
2301 struct cls_fl_filter *f;
2303 arg->count = arg->skip;
2306 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2307 /* don't return filters that are being deleted */
2308 if (!refcount_inc_not_zero(&f->refcnt))
2312 if (arg->fn(tp, f, arg) < 0) {
2326 static struct cls_fl_filter *
2327 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2329 struct cls_fl_head *head = fl_head_dereference(tp);
2331 spin_lock(&tp->lock);
2332 if (list_empty(&head->hw_filters)) {
2333 spin_unlock(&tp->lock);
2338 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2340 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2341 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2342 spin_unlock(&tp->lock);
2347 spin_unlock(&tp->lock);
2351 static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
2352 void *cb_priv, struct netlink_ext_ack *extack)
2354 struct tcf_block *block = tp->chain->block;
2355 struct flow_cls_offload cls_flower = {};
2356 struct cls_fl_filter *f = NULL;
2359 /* hw_filters list can only be changed by hw offload functions after
2360 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2365 while ((f = fl_get_next_hw_filter(tp, f, add))) {
2367 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2368 if (!cls_flower.rule) {
2373 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
2375 cls_flower.command = add ?
2376 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
2377 cls_flower.cookie = (unsigned long)f;
2378 cls_flower.rule->match.dissector = &f->mask->dissector;
2379 cls_flower.rule->match.mask = &f->mask->key;
2380 cls_flower.rule->match.key = &f->mkey;
2382 err = tc_setup_offload_action(&cls_flower.rule->action, &f->exts,
2383 cls_flower.common.extack);
2385 kfree(cls_flower.rule);
2386 if (tc_skip_sw(f->flags)) {
2393 cls_flower.classid = f->res.classid;
2395 err = tc_setup_cb_reoffload(block, tp, add, cb,
2396 TC_SETUP_CLSFLOWER, &cls_flower,
2399 tc_cleanup_offload_action(&cls_flower.rule->action);
2400 kfree(cls_flower.rule);
2413 static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2415 struct flow_cls_offload *cls_flower = type_data;
2416 struct cls_fl_filter *f =
2417 (struct cls_fl_filter *) cls_flower->cookie;
2418 struct cls_fl_head *head = fl_head_dereference(tp);
2420 spin_lock(&tp->lock);
2421 list_add(&f->hw_list, &head->hw_filters);
2422 spin_unlock(&tp->lock);
2425 static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2427 struct flow_cls_offload *cls_flower = type_data;
2428 struct cls_fl_filter *f =
2429 (struct cls_fl_filter *) cls_flower->cookie;
2431 spin_lock(&tp->lock);
2432 if (!list_empty(&f->hw_list))
2433 list_del_init(&f->hw_list);
2434 spin_unlock(&tp->lock);
2437 static int fl_hw_create_tmplt(struct tcf_chain *chain,
2438 struct fl_flow_tmplt *tmplt)
2440 struct flow_cls_offload cls_flower = {};
2441 struct tcf_block *block = chain->block;
2443 cls_flower.rule = flow_rule_alloc(0);
2444 if (!cls_flower.rule)
2447 cls_flower.common.chain_index = chain->index;
2448 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2449 cls_flower.cookie = (unsigned long) tmplt;
2450 cls_flower.rule->match.dissector = &tmplt->dissector;
2451 cls_flower.rule->match.mask = &tmplt->mask;
2452 cls_flower.rule->match.key = &tmplt->dummy_key;
2454 /* We don't care if driver (any of them) fails to handle this
2455 * call. It serves just as a hint for it.
2457 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2458 kfree(cls_flower.rule);
2463 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2464 struct fl_flow_tmplt *tmplt)
2466 struct flow_cls_offload cls_flower = {};
2467 struct tcf_block *block = chain->block;
2469 cls_flower.common.chain_index = chain->index;
2470 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2471 cls_flower.cookie = (unsigned long) tmplt;
2473 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2476 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2477 struct nlattr **tca,
2478 struct netlink_ext_ack *extack)
2480 struct fl_flow_tmplt *tmplt;
2484 if (!tca[TCA_OPTIONS])
2485 return ERR_PTR(-EINVAL);
2487 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2489 return ERR_PTR(-ENOBUFS);
2490 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2491 tca[TCA_OPTIONS], fl_policy, NULL);
2495 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2500 tmplt->chain = chain;
2501 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2505 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2507 err = fl_hw_create_tmplt(chain, tmplt);
2518 return ERR_PTR(err);
2521 static void fl_tmplt_destroy(void *tmplt_priv)
2523 struct fl_flow_tmplt *tmplt = tmplt_priv;
2525 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2529 static int fl_dump_key_val(struct sk_buff *skb,
2530 void *val, int val_type,
2531 void *mask, int mask_type, int len)
2535 if (!memchr_inv(mask, 0, len))
2537 err = nla_put(skb, val_type, len, val);
2540 if (mask_type != TCA_FLOWER_UNSPEC) {
2541 err = nla_put(skb, mask_type, len, mask);
2548 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2549 struct fl_flow_key *mask)
2551 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2552 TCA_FLOWER_KEY_PORT_DST_MIN,
2553 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2554 sizeof(key->tp_range.tp_min.dst)) ||
2555 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2556 TCA_FLOWER_KEY_PORT_DST_MAX,
2557 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2558 sizeof(key->tp_range.tp_max.dst)) ||
2559 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2560 TCA_FLOWER_KEY_PORT_SRC_MIN,
2561 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2562 sizeof(key->tp_range.tp_min.src)) ||
2563 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2564 TCA_FLOWER_KEY_PORT_SRC_MAX,
2565 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2566 sizeof(key->tp_range.tp_max.src)))
2572 static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2573 struct flow_dissector_key_mpls *mpls_key,
2574 struct flow_dissector_key_mpls *mpls_mask,
2577 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2578 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2581 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2586 if (lse_mask->mpls_ttl) {
2587 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2592 if (lse_mask->mpls_bos) {
2593 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2598 if (lse_mask->mpls_tc) {
2599 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2604 if (lse_mask->mpls_label) {
2605 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2606 lse_key->mpls_label);
2614 static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2615 struct flow_dissector_key_mpls *mpls_key,
2616 struct flow_dissector_key_mpls *mpls_mask)
2618 struct nlattr *opts;
2623 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2627 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2628 if (!(mpls_mask->used_lses & 1 << lse_index))
2631 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2637 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2641 nla_nest_end(skb, lse);
2643 nla_nest_end(skb, opts);
2648 nla_nest_cancel(skb, lse);
2650 nla_nest_cancel(skb, opts);
2655 static int fl_dump_key_mpls(struct sk_buff *skb,
2656 struct flow_dissector_key_mpls *mpls_key,
2657 struct flow_dissector_key_mpls *mpls_mask)
2659 struct flow_dissector_mpls_lse *lse_mask;
2660 struct flow_dissector_mpls_lse *lse_key;
2663 if (!mpls_mask->used_lses)
2666 lse_mask = &mpls_mask->ls[0];
2667 lse_key = &mpls_key->ls[0];
2669 /* For backward compatibility, don't use the MPLS nested attributes if
2670 * the rule can be expressed using the old attributes.
2672 if (mpls_mask->used_lses & ~1 ||
2673 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2674 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2675 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2677 if (lse_mask->mpls_ttl) {
2678 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2683 if (lse_mask->mpls_tc) {
2684 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2689 if (lse_mask->mpls_label) {
2690 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2691 lse_key->mpls_label);
2695 if (lse_mask->mpls_bos) {
2696 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2704 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2705 struct flow_dissector_key_ip *key,
2706 struct flow_dissector_key_ip *mask)
2708 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2709 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2710 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2711 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2713 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2714 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2720 static int fl_dump_key_vlan(struct sk_buff *skb,
2721 int vlan_id_key, int vlan_prio_key,
2722 struct flow_dissector_key_vlan *vlan_key,
2723 struct flow_dissector_key_vlan *vlan_mask)
2727 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2729 if (vlan_mask->vlan_id) {
2730 err = nla_put_u16(skb, vlan_id_key,
2735 if (vlan_mask->vlan_priority) {
2736 err = nla_put_u8(skb, vlan_prio_key,
2737 vlan_key->vlan_priority);
2744 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2745 u32 *flower_key, u32 *flower_mask,
2746 u32 flower_flag_bit, u32 dissector_flag_bit)
2748 if (dissector_mask & dissector_flag_bit) {
2749 *flower_mask |= flower_flag_bit;
2750 if (dissector_key & dissector_flag_bit)
2751 *flower_key |= flower_flag_bit;
2755 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2761 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2767 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2768 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2769 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2770 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2771 FLOW_DIS_FIRST_FRAG);
2773 _key = cpu_to_be32(key);
2774 _mask = cpu_to_be32(mask);
2776 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2780 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2783 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2784 struct flow_dissector_key_enc_opts *enc_opts)
2786 struct geneve_opt *opt;
2787 struct nlattr *nest;
2790 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2792 goto nla_put_failure;
2794 while (enc_opts->len > opt_off) {
2795 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2797 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2799 goto nla_put_failure;
2800 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2802 goto nla_put_failure;
2803 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2804 opt->length * 4, opt->opt_data))
2805 goto nla_put_failure;
2807 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2809 nla_nest_end(skb, nest);
2813 nla_nest_cancel(skb, nest);
2817 static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2818 struct flow_dissector_key_enc_opts *enc_opts)
2820 struct vxlan_metadata *md;
2821 struct nlattr *nest;
2823 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2825 goto nla_put_failure;
2827 md = (struct vxlan_metadata *)&enc_opts->data[0];
2828 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2829 goto nla_put_failure;
2831 nla_nest_end(skb, nest);
2835 nla_nest_cancel(skb, nest);
2839 static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2840 struct flow_dissector_key_enc_opts *enc_opts)
2842 struct erspan_metadata *md;
2843 struct nlattr *nest;
2845 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2847 goto nla_put_failure;
2849 md = (struct erspan_metadata *)&enc_opts->data[0];
2850 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2851 goto nla_put_failure;
2853 if (md->version == 1 &&
2854 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2855 goto nla_put_failure;
2857 if (md->version == 2 &&
2858 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2860 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2861 get_hwid(&md->u.md2))))
2862 goto nla_put_failure;
2864 nla_nest_end(skb, nest);
2868 nla_nest_cancel(skb, nest);
2872 static int fl_dump_key_gtp_opt(struct sk_buff *skb,
2873 struct flow_dissector_key_enc_opts *enc_opts)
2876 struct gtp_pdu_session_info *session_info;
2877 struct nlattr *nest;
2879 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GTP);
2881 goto nla_put_failure;
2883 session_info = (struct gtp_pdu_session_info *)&enc_opts->data[0];
2885 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE,
2886 session_info->pdu_type))
2887 goto nla_put_failure;
2889 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GTP_QFI, session_info->qfi))
2890 goto nla_put_failure;
2892 nla_nest_end(skb, nest);
2896 nla_nest_cancel(skb, nest);
2900 static int fl_dump_key_ct(struct sk_buff *skb,
2901 struct flow_dissector_key_ct *key,
2902 struct flow_dissector_key_ct *mask)
2904 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2905 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2906 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2907 sizeof(key->ct_state)))
2908 goto nla_put_failure;
2910 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2911 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2912 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2913 sizeof(key->ct_zone)))
2914 goto nla_put_failure;
2916 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2917 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2918 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2919 sizeof(key->ct_mark)))
2920 goto nla_put_failure;
2922 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2923 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2924 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2925 sizeof(key->ct_labels)))
2926 goto nla_put_failure;
2934 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2935 struct flow_dissector_key_enc_opts *enc_opts)
2937 struct nlattr *nest;
2943 nest = nla_nest_start_noflag(skb, enc_opt_type);
2945 goto nla_put_failure;
2947 switch (enc_opts->dst_opt_type) {
2948 case TUNNEL_GENEVE_OPT:
2949 err = fl_dump_key_geneve_opt(skb, enc_opts);
2951 goto nla_put_failure;
2953 case TUNNEL_VXLAN_OPT:
2954 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2956 goto nla_put_failure;
2958 case TUNNEL_ERSPAN_OPT:
2959 err = fl_dump_key_erspan_opt(skb, enc_opts);
2961 goto nla_put_failure;
2963 case TUNNEL_GTP_OPT:
2964 err = fl_dump_key_gtp_opt(skb, enc_opts);
2966 goto nla_put_failure;
2969 goto nla_put_failure;
2971 nla_nest_end(skb, nest);
2975 nla_nest_cancel(skb, nest);
2979 static int fl_dump_key_enc_opt(struct sk_buff *skb,
2980 struct flow_dissector_key_enc_opts *key_opts,
2981 struct flow_dissector_key_enc_opts *msk_opts)
2985 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2989 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2992 static int fl_dump_key(struct sk_buff *skb, struct net *net,
2993 struct fl_flow_key *key, struct fl_flow_key *mask)
2995 if (mask->meta.ingress_ifindex) {
2996 struct net_device *dev;
2998 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
2999 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
3000 goto nla_put_failure;
3003 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
3004 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
3005 sizeof(key->eth.dst)) ||
3006 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
3007 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
3008 sizeof(key->eth.src)) ||
3009 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
3010 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
3011 sizeof(key->basic.n_proto)))
3012 goto nla_put_failure;
3014 if (mask->num_of_vlans.num_of_vlans) {
3015 if (nla_put_u8(skb, TCA_FLOWER_KEY_NUM_OF_VLANS, key->num_of_vlans.num_of_vlans))
3016 goto nla_put_failure;
3019 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
3020 goto nla_put_failure;
3022 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
3023 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
3024 goto nla_put_failure;
3026 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
3027 TCA_FLOWER_KEY_CVLAN_PRIO,
3028 &key->cvlan, &mask->cvlan) ||
3029 (mask->cvlan.vlan_tpid &&
3030 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3031 key->cvlan.vlan_tpid)))
3032 goto nla_put_failure;
3034 if (mask->basic.n_proto) {
3035 if (mask->cvlan.vlan_eth_type) {
3036 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
3037 key->basic.n_proto))
3038 goto nla_put_failure;
3039 } else if (mask->vlan.vlan_eth_type) {
3040 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
3041 key->vlan.vlan_eth_type))
3042 goto nla_put_failure;
3046 if ((key->basic.n_proto == htons(ETH_P_IP) ||
3047 key->basic.n_proto == htons(ETH_P_IPV6)) &&
3048 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
3049 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
3050 sizeof(key->basic.ip_proto)) ||
3051 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
3052 goto nla_put_failure;
3054 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3055 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
3056 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
3057 sizeof(key->ipv4.src)) ||
3058 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
3059 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
3060 sizeof(key->ipv4.dst))))
3061 goto nla_put_failure;
3062 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3063 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
3064 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
3065 sizeof(key->ipv6.src)) ||
3066 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
3067 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
3068 sizeof(key->ipv6.dst))))
3069 goto nla_put_failure;
3071 if (key->basic.ip_proto == IPPROTO_TCP &&
3072 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
3073 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
3074 sizeof(key->tp.src)) ||
3075 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
3076 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
3077 sizeof(key->tp.dst)) ||
3078 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
3079 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
3080 sizeof(key->tcp.flags))))
3081 goto nla_put_failure;
3082 else if (key->basic.ip_proto == IPPROTO_UDP &&
3083 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
3084 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
3085 sizeof(key->tp.src)) ||
3086 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
3087 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
3088 sizeof(key->tp.dst))))
3089 goto nla_put_failure;
3090 else if (key->basic.ip_proto == IPPROTO_SCTP &&
3091 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
3092 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
3093 sizeof(key->tp.src)) ||
3094 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
3095 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
3096 sizeof(key->tp.dst))))
3097 goto nla_put_failure;
3098 else if (key->basic.n_proto == htons(ETH_P_IP) &&
3099 key->basic.ip_proto == IPPROTO_ICMP &&
3100 (fl_dump_key_val(skb, &key->icmp.type,
3101 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
3102 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
3103 sizeof(key->icmp.type)) ||
3104 fl_dump_key_val(skb, &key->icmp.code,
3105 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
3106 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
3107 sizeof(key->icmp.code))))
3108 goto nla_put_failure;
3109 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
3110 key->basic.ip_proto == IPPROTO_ICMPV6 &&
3111 (fl_dump_key_val(skb, &key->icmp.type,
3112 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
3113 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
3114 sizeof(key->icmp.type)) ||
3115 fl_dump_key_val(skb, &key->icmp.code,
3116 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
3117 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
3118 sizeof(key->icmp.code))))
3119 goto nla_put_failure;
3120 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
3121 key->basic.n_proto == htons(ETH_P_RARP)) &&
3122 (fl_dump_key_val(skb, &key->arp.sip,
3123 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
3124 TCA_FLOWER_KEY_ARP_SIP_MASK,
3125 sizeof(key->arp.sip)) ||
3126 fl_dump_key_val(skb, &key->arp.tip,
3127 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
3128 TCA_FLOWER_KEY_ARP_TIP_MASK,
3129 sizeof(key->arp.tip)) ||
3130 fl_dump_key_val(skb, &key->arp.op,
3131 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
3132 TCA_FLOWER_KEY_ARP_OP_MASK,
3133 sizeof(key->arp.op)) ||
3134 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
3135 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
3136 sizeof(key->arp.sha)) ||
3137 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
3138 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
3139 sizeof(key->arp.tha))))
3140 goto nla_put_failure;
3142 if ((key->basic.ip_proto == IPPROTO_TCP ||
3143 key->basic.ip_proto == IPPROTO_UDP ||
3144 key->basic.ip_proto == IPPROTO_SCTP) &&
3145 fl_dump_key_port_range(skb, key, mask))
3146 goto nla_put_failure;
3148 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
3149 (fl_dump_key_val(skb, &key->enc_ipv4.src,
3150 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
3151 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
3152 sizeof(key->enc_ipv4.src)) ||
3153 fl_dump_key_val(skb, &key->enc_ipv4.dst,
3154 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
3155 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
3156 sizeof(key->enc_ipv4.dst))))
3157 goto nla_put_failure;
3158 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
3159 (fl_dump_key_val(skb, &key->enc_ipv6.src,
3160 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
3161 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
3162 sizeof(key->enc_ipv6.src)) ||
3163 fl_dump_key_val(skb, &key->enc_ipv6.dst,
3164 TCA_FLOWER_KEY_ENC_IPV6_DST,
3165 &mask->enc_ipv6.dst,
3166 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
3167 sizeof(key->enc_ipv6.dst))))
3168 goto nla_put_failure;
3170 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
3171 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
3172 sizeof(key->enc_key_id)) ||
3173 fl_dump_key_val(skb, &key->enc_tp.src,
3174 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
3176 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
3177 sizeof(key->enc_tp.src)) ||
3178 fl_dump_key_val(skb, &key->enc_tp.dst,
3179 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
3181 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
3182 sizeof(key->enc_tp.dst)) ||
3183 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
3184 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
3185 goto nla_put_failure;
3187 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
3188 goto nla_put_failure;
3190 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
3191 goto nla_put_failure;
3193 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
3194 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
3195 sizeof(key->hash.hash)))
3196 goto nla_put_failure;
3204 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
3205 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3207 struct cls_fl_filter *f = fh;
3208 struct nlattr *nest;
3209 struct fl_flow_key *key, *mask;
3215 t->tcm_handle = f->handle;
3217 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3219 goto nla_put_failure;
3221 spin_lock(&tp->lock);
3223 if (f->res.classid &&
3224 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3225 goto nla_put_failure_locked;
3228 mask = &f->mask->key;
3229 skip_hw = tc_skip_hw(f->flags);
3231 if (fl_dump_key(skb, net, key, mask))
3232 goto nla_put_failure_locked;
3234 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3235 goto nla_put_failure_locked;
3237 spin_unlock(&tp->lock);
3240 fl_hw_update_stats(tp, f, rtnl_held);
3242 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3243 goto nla_put_failure;
3245 if (tcf_exts_dump(skb, &f->exts))
3246 goto nla_put_failure;
3248 nla_nest_end(skb, nest);
3250 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3251 goto nla_put_failure;
3255 nla_put_failure_locked:
3256 spin_unlock(&tp->lock);
3258 nla_nest_cancel(skb, nest);
3262 static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3263 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3265 struct cls_fl_filter *f = fh;
3266 struct nlattr *nest;
3272 t->tcm_handle = f->handle;
3274 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3276 goto nla_put_failure;
3278 spin_lock(&tp->lock);
3280 skip_hw = tc_skip_hw(f->flags);
3282 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3283 goto nla_put_failure_locked;
3285 spin_unlock(&tp->lock);
3288 fl_hw_update_stats(tp, f, rtnl_held);
3290 if (tcf_exts_terse_dump(skb, &f->exts))
3291 goto nla_put_failure;
3293 nla_nest_end(skb, nest);
3297 nla_put_failure_locked:
3298 spin_unlock(&tp->lock);
3300 nla_nest_cancel(skb, nest);
3304 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3306 struct fl_flow_tmplt *tmplt = tmplt_priv;
3307 struct fl_flow_key *key, *mask;
3308 struct nlattr *nest;
3310 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3312 goto nla_put_failure;
3314 key = &tmplt->dummy_key;
3315 mask = &tmplt->mask;
3317 if (fl_dump_key(skb, net, key, mask))
3318 goto nla_put_failure;
3320 nla_nest_end(skb, nest);
3325 nla_nest_cancel(skb, nest);
3329 static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3332 struct cls_fl_filter *f = fh;
3334 if (f && f->res.classid == classid) {
3336 __tcf_bind_filter(q, &f->res, base);
3338 __tcf_unbind_filter(q, &f->res);
3342 static bool fl_delete_empty(struct tcf_proto *tp)
3344 struct cls_fl_head *head = fl_head_dereference(tp);
3346 spin_lock(&tp->lock);
3347 tp->deleting = idr_is_empty(&head->handle_idr);
3348 spin_unlock(&tp->lock);
3350 return tp->deleting;
3353 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3355 .classify = fl_classify,
3357 .destroy = fl_destroy,
3360 .change = fl_change,
3361 .delete = fl_delete,
3362 .delete_empty = fl_delete_empty,
3364 .reoffload = fl_reoffload,
3365 .hw_add = fl_hw_add,
3366 .hw_del = fl_hw_del,
3368 .terse_dump = fl_terse_dump,
3369 .bind_class = fl_bind_class,
3370 .tmplt_create = fl_tmplt_create,
3371 .tmplt_destroy = fl_tmplt_destroy,
3372 .tmplt_dump = fl_tmplt_dump,
3373 .owner = THIS_MODULE,
3374 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
3377 static int __init cls_fl_init(void)
3379 return register_tcf_proto_ops(&cls_fl_ops);
3382 static void __exit cls_fl_exit(void)
3384 unregister_tcf_proto_ops(&cls_fl_ops);
3387 module_init(cls_fl_init);
3388 module_exit(cls_fl_exit);
3390 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3391 MODULE_DESCRIPTION("Flower classifier");
3392 MODULE_LICENSE("GPL v2");