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;
60 struct flow_dissector_key_ports tp;
62 struct flow_dissector_key_ports tp_min;
63 struct flow_dissector_key_ports tp_max;
66 struct flow_dissector_key_ct ct;
67 struct flow_dissector_key_hash hash;
68 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
70 struct fl_flow_mask_range {
71 unsigned short int start;
72 unsigned short int end;
76 struct fl_flow_key key;
77 struct fl_flow_mask_range range;
79 struct rhash_head ht_node;
81 struct rhashtable_params filter_ht_params;
82 struct flow_dissector dissector;
83 struct list_head filters;
84 struct rcu_work rwork;
85 struct list_head list;
89 struct fl_flow_tmplt {
90 struct fl_flow_key dummy_key;
91 struct fl_flow_key mask;
92 struct flow_dissector dissector;
93 struct tcf_chain *chain;
98 spinlock_t masks_lock; /* Protect masks list */
99 struct list_head masks;
100 struct list_head hw_filters;
101 struct rcu_work rwork;
102 struct idr handle_idr;
105 struct cls_fl_filter {
106 struct fl_flow_mask *mask;
107 struct rhash_head ht_node;
108 struct fl_flow_key mkey;
109 struct tcf_exts exts;
110 struct tcf_result res;
111 struct fl_flow_key key;
112 struct list_head list;
113 struct list_head hw_list;
117 struct rcu_work rwork;
118 struct net_device *hw_dev;
119 /* Flower classifier is unlocked, which means that its reference counter
120 * can be changed concurrently without any kind of external
121 * synchronization. Use atomic reference counter to be concurrency-safe.
127 static const struct rhashtable_params mask_ht_params = {
128 .key_offset = offsetof(struct fl_flow_mask, key),
129 .key_len = sizeof(struct fl_flow_key),
130 .head_offset = offsetof(struct fl_flow_mask, ht_node),
131 .automatic_shrinking = true,
134 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
136 return mask->range.end - mask->range.start;
139 static void fl_mask_update_range(struct fl_flow_mask *mask)
141 const u8 *bytes = (const u8 *) &mask->key;
142 size_t size = sizeof(mask->key);
143 size_t i, first = 0, last;
145 for (i = 0; i < size; i++) {
152 for (i = size - 1; i != first; i--) {
158 mask->range.start = rounddown(first, sizeof(long));
159 mask->range.end = roundup(last + 1, sizeof(long));
162 static void *fl_key_get_start(struct fl_flow_key *key,
163 const struct fl_flow_mask *mask)
165 return (u8 *) key + mask->range.start;
168 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
169 struct fl_flow_mask *mask)
171 const long *lkey = fl_key_get_start(key, mask);
172 const long *lmask = fl_key_get_start(&mask->key, mask);
173 long *lmkey = fl_key_get_start(mkey, mask);
176 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
177 *lmkey++ = *lkey++ & *lmask++;
180 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
181 struct fl_flow_mask *mask)
183 const long *lmask = fl_key_get_start(&mask->key, mask);
189 ltmplt = fl_key_get_start(&tmplt->mask, mask);
190 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
191 if (~*ltmplt++ & *lmask++)
197 static void fl_clear_masked_range(struct fl_flow_key *key,
198 struct fl_flow_mask *mask)
200 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
203 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
204 struct fl_flow_key *key,
205 struct fl_flow_key *mkey)
207 __be16 min_mask, max_mask, min_val, max_val;
209 min_mask = htons(filter->mask->key.tp_range.tp_min.dst);
210 max_mask = htons(filter->mask->key.tp_range.tp_max.dst);
211 min_val = htons(filter->key.tp_range.tp_min.dst);
212 max_val = htons(filter->key.tp_range.tp_max.dst);
214 if (min_mask && max_mask) {
215 if (htons(key->tp_range.tp.dst) < min_val ||
216 htons(key->tp_range.tp.dst) > max_val)
219 /* skb does not have min and max values */
220 mkey->tp_range.tp_min.dst = filter->mkey.tp_range.tp_min.dst;
221 mkey->tp_range.tp_max.dst = filter->mkey.tp_range.tp_max.dst;
226 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
227 struct fl_flow_key *key,
228 struct fl_flow_key *mkey)
230 __be16 min_mask, max_mask, min_val, max_val;
232 min_mask = htons(filter->mask->key.tp_range.tp_min.src);
233 max_mask = htons(filter->mask->key.tp_range.tp_max.src);
234 min_val = htons(filter->key.tp_range.tp_min.src);
235 max_val = htons(filter->key.tp_range.tp_max.src);
237 if (min_mask && max_mask) {
238 if (htons(key->tp_range.tp.src) < min_val ||
239 htons(key->tp_range.tp.src) > max_val)
242 /* skb does not have min and max values */
243 mkey->tp_range.tp_min.src = filter->mkey.tp_range.tp_min.src;
244 mkey->tp_range.tp_max.src = filter->mkey.tp_range.tp_max.src;
249 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
250 struct fl_flow_key *mkey)
252 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
253 mask->filter_ht_params);
256 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
257 struct fl_flow_key *mkey,
258 struct fl_flow_key *key)
260 struct cls_fl_filter *filter, *f;
262 list_for_each_entry_rcu(filter, &mask->filters, list) {
263 if (!fl_range_port_dst_cmp(filter, key, mkey))
266 if (!fl_range_port_src_cmp(filter, key, mkey))
269 f = __fl_lookup(mask, mkey);
276 static noinline_for_stack
277 struct cls_fl_filter *fl_mask_lookup(struct fl_flow_mask *mask, struct fl_flow_key *key)
279 struct fl_flow_key mkey;
281 fl_set_masked_key(&mkey, key, mask);
282 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
283 return fl_lookup_range(mask, &mkey, key);
285 return __fl_lookup(mask, &mkey);
288 static u16 fl_ct_info_to_flower_map[] = {
289 [IP_CT_ESTABLISHED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
290 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
291 [IP_CT_RELATED] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
292 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
293 [IP_CT_ESTABLISHED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
294 TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
295 [IP_CT_RELATED_REPLY] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
296 TCA_FLOWER_KEY_CT_FLAGS_RELATED,
297 [IP_CT_NEW] = TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
298 TCA_FLOWER_KEY_CT_FLAGS_NEW,
301 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
302 struct tcf_result *res)
304 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
305 struct fl_flow_key skb_key;
306 struct fl_flow_mask *mask;
307 struct cls_fl_filter *f;
309 list_for_each_entry_rcu(mask, &head->masks, list) {
310 flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
311 fl_clear_masked_range(&skb_key, mask);
313 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
314 /* skb_flow_dissect() does not set n_proto in case an unknown
315 * protocol, so do it rather here.
317 skb_key.basic.n_proto = skb_protocol(skb, false);
318 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
319 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
320 fl_ct_info_to_flower_map,
321 ARRAY_SIZE(fl_ct_info_to_flower_map));
322 skb_flow_dissect_hash(skb, &mask->dissector, &skb_key);
323 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
325 f = fl_mask_lookup(mask, &skb_key);
326 if (f && !tc_skip_sw(f->flags)) {
328 return tcf_exts_exec(skb, &f->exts, res);
334 static int fl_init(struct tcf_proto *tp)
336 struct cls_fl_head *head;
338 head = kzalloc(sizeof(*head), GFP_KERNEL);
342 spin_lock_init(&head->masks_lock);
343 INIT_LIST_HEAD_RCU(&head->masks);
344 INIT_LIST_HEAD(&head->hw_filters);
345 rcu_assign_pointer(tp->root, head);
346 idr_init(&head->handle_idr);
348 return rhashtable_init(&head->ht, &mask_ht_params);
351 static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
353 /* temporary masks don't have their filters list and ht initialized */
354 if (mask_init_done) {
355 WARN_ON(!list_empty(&mask->filters));
356 rhashtable_destroy(&mask->ht);
361 static void fl_mask_free_work(struct work_struct *work)
363 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
364 struct fl_flow_mask, rwork);
366 fl_mask_free(mask, true);
369 static void fl_uninit_mask_free_work(struct work_struct *work)
371 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
372 struct fl_flow_mask, rwork);
374 fl_mask_free(mask, false);
377 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
379 if (!refcount_dec_and_test(&mask->refcnt))
382 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
384 spin_lock(&head->masks_lock);
385 list_del_rcu(&mask->list);
386 spin_unlock(&head->masks_lock);
388 tcf_queue_work(&mask->rwork, fl_mask_free_work);
393 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
395 /* Flower classifier only changes root pointer during init and destroy.
396 * Users must obtain reference to tcf_proto instance before calling its
397 * API, so tp->root pointer is protected from concurrent call to
398 * fl_destroy() by reference counting.
400 return rcu_dereference_raw(tp->root);
403 static void __fl_destroy_filter(struct cls_fl_filter *f)
405 tcf_exts_destroy(&f->exts);
406 tcf_exts_put_net(&f->exts);
410 static void fl_destroy_filter_work(struct work_struct *work)
412 struct cls_fl_filter *f = container_of(to_rcu_work(work),
413 struct cls_fl_filter, rwork);
415 __fl_destroy_filter(f);
418 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
419 bool rtnl_held, struct netlink_ext_ack *extack)
421 struct tcf_block *block = tp->chain->block;
422 struct flow_cls_offload cls_flower = {};
424 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
425 cls_flower.command = FLOW_CLS_DESTROY;
426 cls_flower.cookie = (unsigned long) f;
428 tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
429 &f->flags, &f->in_hw_count, rtnl_held);
433 static int fl_hw_replace_filter(struct tcf_proto *tp,
434 struct cls_fl_filter *f, bool rtnl_held,
435 struct netlink_ext_ack *extack)
437 struct tcf_block *block = tp->chain->block;
438 struct flow_cls_offload cls_flower = {};
439 bool skip_sw = tc_skip_sw(f->flags);
442 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
443 if (!cls_flower.rule)
446 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
447 cls_flower.command = FLOW_CLS_REPLACE;
448 cls_flower.cookie = (unsigned long) f;
449 cls_flower.rule->match.dissector = &f->mask->dissector;
450 cls_flower.rule->match.mask = &f->mask->key;
451 cls_flower.rule->match.key = &f->mkey;
452 cls_flower.classid = f->res.classid;
454 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
456 kfree(cls_flower.rule);
458 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
464 err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
465 skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
466 tc_cleanup_flow_action(&cls_flower.rule->action);
467 kfree(cls_flower.rule);
470 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
474 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
480 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
483 struct tcf_block *block = tp->chain->block;
484 struct flow_cls_offload cls_flower = {};
486 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
487 cls_flower.command = FLOW_CLS_STATS;
488 cls_flower.cookie = (unsigned long) f;
489 cls_flower.classid = f->res.classid;
491 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
494 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
495 cls_flower.stats.pkts,
496 cls_flower.stats.drops,
497 cls_flower.stats.lastused,
498 cls_flower.stats.used_hw_stats,
499 cls_flower.stats.used_hw_stats_valid);
502 static void __fl_put(struct cls_fl_filter *f)
504 if (!refcount_dec_and_test(&f->refcnt))
507 if (tcf_exts_get_net(&f->exts))
508 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
510 __fl_destroy_filter(f);
513 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
515 struct cls_fl_filter *f;
518 f = idr_find(&head->handle_idr, handle);
519 if (f && !refcount_inc_not_zero(&f->refcnt))
526 static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
527 bool *last, bool rtnl_held,
528 struct netlink_ext_ack *extack)
530 struct cls_fl_head *head = fl_head_dereference(tp);
534 spin_lock(&tp->lock);
536 spin_unlock(&tp->lock);
541 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
542 f->mask->filter_ht_params);
543 idr_remove(&head->handle_idr, f->handle);
544 list_del_rcu(&f->list);
545 spin_unlock(&tp->lock);
547 *last = fl_mask_put(head, f->mask);
548 if (!tc_skip_hw(f->flags))
549 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
550 tcf_unbind_filter(tp, &f->res);
556 static void fl_destroy_sleepable(struct work_struct *work)
558 struct cls_fl_head *head = container_of(to_rcu_work(work),
562 rhashtable_destroy(&head->ht);
564 module_put(THIS_MODULE);
567 static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
568 struct netlink_ext_ack *extack)
570 struct cls_fl_head *head = fl_head_dereference(tp);
571 struct fl_flow_mask *mask, *next_mask;
572 struct cls_fl_filter *f, *next;
575 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
576 list_for_each_entry_safe(f, next, &mask->filters, list) {
577 __fl_delete(tp, f, &last, rtnl_held, extack);
582 idr_destroy(&head->handle_idr);
584 __module_get(THIS_MODULE);
585 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
588 static void fl_put(struct tcf_proto *tp, void *arg)
590 struct cls_fl_filter *f = arg;
595 static void *fl_get(struct tcf_proto *tp, u32 handle)
597 struct cls_fl_head *head = fl_head_dereference(tp);
599 return __fl_get(head, handle);
602 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
603 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
604 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
605 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
607 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
608 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
609 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
610 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
611 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
612 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
613 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
614 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
615 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
616 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
617 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
618 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
619 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
620 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
621 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
622 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
623 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
624 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
625 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
626 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
627 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
628 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
629 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
630 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
631 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
632 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
633 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
634 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
635 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
636 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
637 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
638 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
639 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
640 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
641 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
642 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
643 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
644 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
645 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
646 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
647 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
648 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
649 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
650 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
651 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
652 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
653 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
654 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
655 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
656 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
657 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
658 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
659 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
660 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
661 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
662 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
663 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
664 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
665 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
666 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
667 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
668 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
669 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
670 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
671 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
672 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
673 [TCA_FLOWER_KEY_MPLS_OPTS] = { .type = NLA_NESTED },
674 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
675 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
676 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
677 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
678 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
679 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
680 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
681 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
682 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
683 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
684 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
685 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
686 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
687 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
688 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
689 [TCA_FLOWER_KEY_CT_STATE] = { .type = NLA_U16 },
690 [TCA_FLOWER_KEY_CT_STATE_MASK] = { .type = NLA_U16 },
691 [TCA_FLOWER_KEY_CT_ZONE] = { .type = NLA_U16 },
692 [TCA_FLOWER_KEY_CT_ZONE_MASK] = { .type = NLA_U16 },
693 [TCA_FLOWER_KEY_CT_MARK] = { .type = NLA_U32 },
694 [TCA_FLOWER_KEY_CT_MARK_MASK] = { .type = NLA_U32 },
695 [TCA_FLOWER_KEY_CT_LABELS] = { .type = NLA_BINARY,
696 .len = 128 / BITS_PER_BYTE },
697 [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
698 .len = 128 / BITS_PER_BYTE },
699 [TCA_FLOWER_FLAGS] = { .type = NLA_U32 },
700 [TCA_FLOWER_KEY_HASH] = { .type = NLA_U32 },
701 [TCA_FLOWER_KEY_HASH_MASK] = { .type = NLA_U32 },
705 static const struct nla_policy
706 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
707 [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC] = {
708 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
709 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
710 [TCA_FLOWER_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
711 [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
714 static const struct nla_policy
715 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
716 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
717 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
718 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
722 static const struct nla_policy
723 vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
724 [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
727 static const struct nla_policy
728 erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
729 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
730 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
731 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
732 [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
735 static const struct nla_policy
736 mpls_stack_entry_policy[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1] = {
737 [TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH] = { .type = NLA_U8 },
738 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL] = { .type = NLA_U8 },
739 [TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS] = { .type = NLA_U8 },
740 [TCA_FLOWER_KEY_MPLS_OPT_LSE_TC] = { .type = NLA_U8 },
741 [TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL] = { .type = NLA_U32 },
744 static void fl_set_key_val(struct nlattr **tb,
745 void *val, int val_type,
746 void *mask, int mask_type, int len)
750 nla_memcpy(val, tb[val_type], len);
751 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
752 memset(mask, 0xff, len);
754 nla_memcpy(mask, tb[mask_type], len);
757 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
758 struct fl_flow_key *mask,
759 struct netlink_ext_ack *extack)
761 fl_set_key_val(tb, &key->tp_range.tp_min.dst,
762 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_range.tp_min.dst,
763 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.dst));
764 fl_set_key_val(tb, &key->tp_range.tp_max.dst,
765 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_range.tp_max.dst,
766 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.dst));
767 fl_set_key_val(tb, &key->tp_range.tp_min.src,
768 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_range.tp_min.src,
769 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_min.src));
770 fl_set_key_val(tb, &key->tp_range.tp_max.src,
771 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_range.tp_max.src,
772 TCA_FLOWER_UNSPEC, sizeof(key->tp_range.tp_max.src));
774 if (mask->tp_range.tp_min.dst && mask->tp_range.tp_max.dst &&
775 htons(key->tp_range.tp_max.dst) <=
776 htons(key->tp_range.tp_min.dst)) {
777 NL_SET_ERR_MSG_ATTR(extack,
778 tb[TCA_FLOWER_KEY_PORT_DST_MIN],
779 "Invalid destination port range (min must be strictly smaller than max)");
782 if (mask->tp_range.tp_min.src && mask->tp_range.tp_max.src &&
783 htons(key->tp_range.tp_max.src) <=
784 htons(key->tp_range.tp_min.src)) {
785 NL_SET_ERR_MSG_ATTR(extack,
786 tb[TCA_FLOWER_KEY_PORT_SRC_MIN],
787 "Invalid source port range (min must be strictly smaller than max)");
794 static int fl_set_key_mpls_lse(const struct nlattr *nla_lse,
795 struct flow_dissector_key_mpls *key_val,
796 struct flow_dissector_key_mpls *key_mask,
797 struct netlink_ext_ack *extack)
799 struct nlattr *tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX + 1];
800 struct flow_dissector_mpls_lse *lse_mask;
801 struct flow_dissector_mpls_lse *lse_val;
806 err = nla_parse_nested(tb, TCA_FLOWER_KEY_MPLS_OPT_LSE_MAX, nla_lse,
807 mpls_stack_entry_policy, extack);
811 if (!tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]) {
812 NL_SET_ERR_MSG(extack, "Missing MPLS option \"depth\"");
816 depth = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH]);
818 /* LSE depth starts at 1, for consistency with terminology used by
819 * RFC 3031 (section 3.9), where depth 0 refers to unlabeled packets.
821 if (depth < 1 || depth > FLOW_DIS_MPLS_MAX) {
822 NL_SET_ERR_MSG_ATTR(extack,
823 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH],
824 "Invalid MPLS depth");
827 lse_index = depth - 1;
829 dissector_set_mpls_lse(key_val, lse_index);
830 dissector_set_mpls_lse(key_mask, lse_index);
832 lse_val = &key_val->ls[lse_index];
833 lse_mask = &key_mask->ls[lse_index];
835 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]) {
836 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL]);
837 lse_mask->mpls_ttl = MPLS_TTL_MASK;
839 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]) {
840 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS]);
842 if (bos & ~MPLS_BOS_MASK) {
843 NL_SET_ERR_MSG_ATTR(extack,
844 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS],
845 "Bottom Of Stack (BOS) must be 0 or 1");
848 lse_val->mpls_bos = bos;
849 lse_mask->mpls_bos = MPLS_BOS_MASK;
851 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]) {
852 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC]);
854 if (tc & ~MPLS_TC_MASK) {
855 NL_SET_ERR_MSG_ATTR(extack,
856 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_TC],
857 "Traffic Class (TC) must be between 0 and 7");
860 lse_val->mpls_tc = tc;
861 lse_mask->mpls_tc = MPLS_TC_MASK;
863 if (tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]) {
864 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL]);
866 if (label & ~MPLS_LABEL_MASK) {
867 NL_SET_ERR_MSG_ATTR(extack,
868 tb[TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL],
869 "Label must be between 0 and 1048575");
872 lse_val->mpls_label = label;
873 lse_mask->mpls_label = MPLS_LABEL_MASK;
879 static int fl_set_key_mpls_opts(const struct nlattr *nla_mpls_opts,
880 struct flow_dissector_key_mpls *key_val,
881 struct flow_dissector_key_mpls *key_mask,
882 struct netlink_ext_ack *extack)
884 struct nlattr *nla_lse;
888 if (!(nla_mpls_opts->nla_type & NLA_F_NESTED)) {
889 NL_SET_ERR_MSG_ATTR(extack, nla_mpls_opts,
890 "NLA_F_NESTED is missing");
894 nla_for_each_nested(nla_lse, nla_mpls_opts, rem) {
895 if (nla_type(nla_lse) != TCA_FLOWER_KEY_MPLS_OPTS_LSE) {
896 NL_SET_ERR_MSG_ATTR(extack, nla_lse,
897 "Invalid MPLS option type");
901 err = fl_set_key_mpls_lse(nla_lse, key_val, key_mask, extack);
906 NL_SET_ERR_MSG(extack,
907 "Bytes leftover after parsing MPLS options");
914 static int fl_set_key_mpls(struct nlattr **tb,
915 struct flow_dissector_key_mpls *key_val,
916 struct flow_dissector_key_mpls *key_mask,
917 struct netlink_ext_ack *extack)
919 struct flow_dissector_mpls_lse *lse_mask;
920 struct flow_dissector_mpls_lse *lse_val;
922 if (tb[TCA_FLOWER_KEY_MPLS_OPTS]) {
923 if (tb[TCA_FLOWER_KEY_MPLS_TTL] ||
924 tb[TCA_FLOWER_KEY_MPLS_BOS] ||
925 tb[TCA_FLOWER_KEY_MPLS_TC] ||
926 tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
927 NL_SET_ERR_MSG_ATTR(extack,
928 tb[TCA_FLOWER_KEY_MPLS_OPTS],
929 "MPLS label, Traffic Class, Bottom Of Stack and Time To Live must be encapsulated in the MPLS options attribute");
933 return fl_set_key_mpls_opts(tb[TCA_FLOWER_KEY_MPLS_OPTS],
934 key_val, key_mask, extack);
937 lse_val = &key_val->ls[0];
938 lse_mask = &key_mask->ls[0];
940 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
941 lse_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
942 lse_mask->mpls_ttl = MPLS_TTL_MASK;
943 dissector_set_mpls_lse(key_val, 0);
944 dissector_set_mpls_lse(key_mask, 0);
946 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
947 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
949 if (bos & ~MPLS_BOS_MASK) {
950 NL_SET_ERR_MSG_ATTR(extack,
951 tb[TCA_FLOWER_KEY_MPLS_BOS],
952 "Bottom Of Stack (BOS) must be 0 or 1");
955 lse_val->mpls_bos = bos;
956 lse_mask->mpls_bos = MPLS_BOS_MASK;
957 dissector_set_mpls_lse(key_val, 0);
958 dissector_set_mpls_lse(key_mask, 0);
960 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
961 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
963 if (tc & ~MPLS_TC_MASK) {
964 NL_SET_ERR_MSG_ATTR(extack,
965 tb[TCA_FLOWER_KEY_MPLS_TC],
966 "Traffic Class (TC) must be between 0 and 7");
969 lse_val->mpls_tc = tc;
970 lse_mask->mpls_tc = MPLS_TC_MASK;
971 dissector_set_mpls_lse(key_val, 0);
972 dissector_set_mpls_lse(key_mask, 0);
974 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
975 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
977 if (label & ~MPLS_LABEL_MASK) {
978 NL_SET_ERR_MSG_ATTR(extack,
979 tb[TCA_FLOWER_KEY_MPLS_LABEL],
980 "Label must be between 0 and 1048575");
983 lse_val->mpls_label = label;
984 lse_mask->mpls_label = MPLS_LABEL_MASK;
985 dissector_set_mpls_lse(key_val, 0);
986 dissector_set_mpls_lse(key_mask, 0);
991 static void fl_set_key_vlan(struct nlattr **tb,
993 int vlan_id_key, int vlan_prio_key,
994 struct flow_dissector_key_vlan *key_val,
995 struct flow_dissector_key_vlan *key_mask)
997 #define VLAN_PRIORITY_MASK 0x7
999 if (tb[vlan_id_key]) {
1001 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
1002 key_mask->vlan_id = VLAN_VID_MASK;
1004 if (tb[vlan_prio_key]) {
1005 key_val->vlan_priority =
1006 nla_get_u8(tb[vlan_prio_key]) &
1008 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
1010 key_val->vlan_tpid = ethertype;
1011 key_mask->vlan_tpid = cpu_to_be16(~0);
1014 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
1015 u32 *dissector_key, u32 *dissector_mask,
1016 u32 flower_flag_bit, u32 dissector_flag_bit)
1018 if (flower_mask & flower_flag_bit) {
1019 *dissector_mask |= dissector_flag_bit;
1020 if (flower_key & flower_flag_bit)
1021 *dissector_key |= dissector_flag_bit;
1025 static int fl_set_key_flags(struct nlattr **tb, u32 *flags_key,
1026 u32 *flags_mask, struct netlink_ext_ack *extack)
1030 /* mask is mandatory for flags */
1031 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK]) {
1032 NL_SET_ERR_MSG(extack, "Missing flags mask");
1036 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
1037 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
1042 fl_set_key_flag(key, mask, flags_key, flags_mask,
1043 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1044 fl_set_key_flag(key, mask, flags_key, flags_mask,
1045 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1046 FLOW_DIS_FIRST_FRAG);
1051 static void fl_set_key_ip(struct nlattr **tb, bool encap,
1052 struct flow_dissector_key_ip *key,
1053 struct flow_dissector_key_ip *mask)
1055 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1056 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1057 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1058 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1060 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
1061 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
1064 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
1065 int depth, int option_len,
1066 struct netlink_ext_ack *extack)
1068 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
1069 struct nlattr *class = NULL, *type = NULL, *data = NULL;
1070 struct geneve_opt *opt;
1071 int err, data_len = 0;
1073 if (option_len > sizeof(struct geneve_opt))
1074 data_len = option_len - sizeof(struct geneve_opt);
1076 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
1077 memset(opt, 0xff, option_len);
1078 opt->length = data_len / 4;
1083 /* If no mask has been prodived we assume an exact match. */
1085 return sizeof(struct geneve_opt) + data_len;
1087 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
1088 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
1092 err = nla_parse_nested_deprecated(tb,
1093 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
1094 nla, geneve_opt_policy, extack);
1098 /* We are not allowed to omit any of CLASS, TYPE or DATA
1099 * fields from the key.
1102 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
1103 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
1104 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
1105 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
1109 /* Omitting any of CLASS, TYPE or DATA fields is allowed
1112 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
1113 int new_len = key->enc_opts.len;
1115 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
1116 data_len = nla_len(data);
1118 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
1122 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
1126 new_len += sizeof(struct geneve_opt) + data_len;
1127 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
1128 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
1129 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
1132 opt->length = data_len / 4;
1133 memcpy(opt->opt_data, nla_data(data), data_len);
1136 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
1137 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
1138 opt->opt_class = nla_get_be16(class);
1141 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
1142 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
1143 opt->type = nla_get_u8(type);
1146 return sizeof(struct geneve_opt) + data_len;
1149 static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1150 int depth, int option_len,
1151 struct netlink_ext_ack *extack)
1153 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
1154 struct vxlan_metadata *md;
1157 md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1158 memset(md, 0xff, sizeof(*md));
1163 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
1164 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
1168 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
1169 vxlan_opt_policy, extack);
1173 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
1174 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
1178 if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP])
1179 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
1184 static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
1185 int depth, int option_len,
1186 struct netlink_ext_ack *extack)
1188 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
1189 struct erspan_metadata *md;
1192 md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
1193 memset(md, 0xff, sizeof(*md));
1199 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1200 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1204 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1205 erspan_opt_policy, extack);
1209 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1210 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1214 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1215 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1217 if (md->version == 1) {
1218 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1219 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1222 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1223 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1224 md->u.index = nla_get_be32(nla);
1226 } else if (md->version == 2) {
1227 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1228 !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1229 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1232 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1233 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1234 md->u.md2.dir = nla_get_u8(nla);
1236 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1237 nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1238 set_hwid(&md->u.md2, nla_get_u8(nla));
1241 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1248 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1249 struct fl_flow_key *mask,
1250 struct netlink_ext_ack *extack)
1252 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1253 int err, option_len, key_depth, msk_depth = 0;
1255 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1256 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1257 enc_opts_policy, extack);
1261 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1263 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1264 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1265 TCA_FLOWER_KEY_ENC_OPTS_MAX,
1266 enc_opts_policy, extack);
1270 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1271 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1274 nla_for_each_attr(nla_opt_key, nla_enc_key,
1275 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1276 switch (nla_type(nla_opt_key)) {
1277 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1278 if (key->enc_opts.dst_opt_type &&
1279 key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1280 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1284 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1285 option_len = fl_set_geneve_opt(nla_opt_key, key,
1286 key_depth, option_len,
1291 key->enc_opts.len += option_len;
1292 /* At the same time we need to parse through the mask
1293 * in order to verify exact and mask attribute lengths.
1295 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1296 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1297 msk_depth, option_len,
1302 mask->enc_opts.len += option_len;
1303 if (key->enc_opts.len != mask->enc_opts.len) {
1304 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1309 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1311 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1312 if (key->enc_opts.dst_opt_type) {
1313 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1317 key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1318 option_len = fl_set_vxlan_opt(nla_opt_key, key,
1319 key_depth, option_len,
1324 key->enc_opts.len += option_len;
1325 /* At the same time we need to parse through the mask
1326 * in order to verify exact and mask attribute lengths.
1328 mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1329 option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1330 msk_depth, option_len,
1335 mask->enc_opts.len += option_len;
1336 if (key->enc_opts.len != mask->enc_opts.len) {
1337 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1342 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1344 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1345 if (key->enc_opts.dst_opt_type) {
1346 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1350 key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1351 option_len = fl_set_erspan_opt(nla_opt_key, key,
1352 key_depth, option_len,
1357 key->enc_opts.len += option_len;
1358 /* At the same time we need to parse through the mask
1359 * in order to verify exact and mask attribute lengths.
1361 mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1362 option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1363 msk_depth, option_len,
1368 mask->enc_opts.len += option_len;
1369 if (key->enc_opts.len != mask->enc_opts.len) {
1370 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1375 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1378 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1386 static int fl_set_key_ct(struct nlattr **tb,
1387 struct flow_dissector_key_ct *key,
1388 struct flow_dissector_key_ct *mask,
1389 struct netlink_ext_ack *extack)
1391 if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1392 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1393 NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1396 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1397 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1398 sizeof(key->ct_state));
1400 if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1401 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1402 NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1405 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1406 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1407 sizeof(key->ct_zone));
1409 if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1410 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1411 NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1414 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1415 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1416 sizeof(key->ct_mark));
1418 if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1419 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1420 NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1423 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1424 mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1425 sizeof(key->ct_labels));
1431 static int fl_set_key(struct net *net, struct nlattr **tb,
1432 struct fl_flow_key *key, struct fl_flow_key *mask,
1433 struct netlink_ext_ack *extack)
1438 if (tb[TCA_FLOWER_INDEV]) {
1439 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1442 key->meta.ingress_ifindex = err;
1443 mask->meta.ingress_ifindex = 0xffffffff;
1446 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1447 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1448 sizeof(key->eth.dst));
1449 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1450 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1451 sizeof(key->eth.src));
1453 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
1454 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1456 if (eth_type_vlan(ethertype)) {
1457 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1458 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1461 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1462 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1463 if (eth_type_vlan(ethertype)) {
1464 fl_set_key_vlan(tb, ethertype,
1465 TCA_FLOWER_KEY_CVLAN_ID,
1466 TCA_FLOWER_KEY_CVLAN_PRIO,
1467 &key->cvlan, &mask->cvlan);
1468 fl_set_key_val(tb, &key->basic.n_proto,
1469 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1470 &mask->basic.n_proto,
1472 sizeof(key->basic.n_proto));
1474 key->basic.n_proto = ethertype;
1475 mask->basic.n_proto = cpu_to_be16(~0);
1479 key->basic.n_proto = ethertype;
1480 mask->basic.n_proto = cpu_to_be16(~0);
1484 if (key->basic.n_proto == htons(ETH_P_IP) ||
1485 key->basic.n_proto == htons(ETH_P_IPV6)) {
1486 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1487 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1488 sizeof(key->basic.ip_proto));
1489 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1492 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1493 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1494 mask->control.addr_type = ~0;
1495 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1496 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1497 sizeof(key->ipv4.src));
1498 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1499 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1500 sizeof(key->ipv4.dst));
1501 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1502 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1503 mask->control.addr_type = ~0;
1504 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1505 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1506 sizeof(key->ipv6.src));
1507 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1508 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1509 sizeof(key->ipv6.dst));
1512 if (key->basic.ip_proto == IPPROTO_TCP) {
1513 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1514 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1515 sizeof(key->tp.src));
1516 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1517 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1518 sizeof(key->tp.dst));
1519 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1520 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1521 sizeof(key->tcp.flags));
1522 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1523 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1524 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1525 sizeof(key->tp.src));
1526 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1527 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1528 sizeof(key->tp.dst));
1529 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1530 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1531 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1532 sizeof(key->tp.src));
1533 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1534 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1535 sizeof(key->tp.dst));
1536 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1537 key->basic.ip_proto == IPPROTO_ICMP) {
1538 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1540 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1541 sizeof(key->icmp.type));
1542 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1544 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1545 sizeof(key->icmp.code));
1546 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1547 key->basic.ip_proto == IPPROTO_ICMPV6) {
1548 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1550 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1551 sizeof(key->icmp.type));
1552 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1554 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1555 sizeof(key->icmp.code));
1556 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1557 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1558 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
1561 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1562 key->basic.n_proto == htons(ETH_P_RARP)) {
1563 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1564 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1565 sizeof(key->arp.sip));
1566 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1567 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1568 sizeof(key->arp.tip));
1569 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1570 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1571 sizeof(key->arp.op));
1572 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1573 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1574 sizeof(key->arp.sha));
1575 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1576 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1577 sizeof(key->arp.tha));
1580 if (key->basic.ip_proto == IPPROTO_TCP ||
1581 key->basic.ip_proto == IPPROTO_UDP ||
1582 key->basic.ip_proto == IPPROTO_SCTP) {
1583 ret = fl_set_key_port_range(tb, key, mask, extack);
1588 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1589 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1590 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1591 mask->enc_control.addr_type = ~0;
1592 fl_set_key_val(tb, &key->enc_ipv4.src,
1593 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1594 &mask->enc_ipv4.src,
1595 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1596 sizeof(key->enc_ipv4.src));
1597 fl_set_key_val(tb, &key->enc_ipv4.dst,
1598 TCA_FLOWER_KEY_ENC_IPV4_DST,
1599 &mask->enc_ipv4.dst,
1600 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1601 sizeof(key->enc_ipv4.dst));
1604 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1605 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1606 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1607 mask->enc_control.addr_type = ~0;
1608 fl_set_key_val(tb, &key->enc_ipv6.src,
1609 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1610 &mask->enc_ipv6.src,
1611 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1612 sizeof(key->enc_ipv6.src));
1613 fl_set_key_val(tb, &key->enc_ipv6.dst,
1614 TCA_FLOWER_KEY_ENC_IPV6_DST,
1615 &mask->enc_ipv6.dst,
1616 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1617 sizeof(key->enc_ipv6.dst));
1620 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1621 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1622 sizeof(key->enc_key_id.keyid));
1624 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1625 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1626 sizeof(key->enc_tp.src));
1628 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1629 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1630 sizeof(key->enc_tp.dst));
1632 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1634 fl_set_key_val(tb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
1635 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
1636 sizeof(key->hash.hash));
1638 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1639 ret = fl_set_enc_opt(tb, key, mask, extack);
1644 ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1648 if (tb[TCA_FLOWER_KEY_FLAGS])
1649 ret = fl_set_key_flags(tb, &key->control.flags,
1650 &mask->control.flags, extack);
1655 static void fl_mask_copy(struct fl_flow_mask *dst,
1656 struct fl_flow_mask *src)
1658 const void *psrc = fl_key_get_start(&src->key, src);
1659 void *pdst = fl_key_get_start(&dst->key, src);
1661 memcpy(pdst, psrc, fl_mask_range(src));
1662 dst->range = src->range;
1665 static const struct rhashtable_params fl_ht_params = {
1666 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1667 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1668 .automatic_shrinking = true,
1671 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1673 mask->filter_ht_params = fl_ht_params;
1674 mask->filter_ht_params.key_len = fl_mask_range(mask);
1675 mask->filter_ht_params.key_offset += mask->range.start;
1677 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1680 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1681 #define FL_KEY_MEMBER_SIZE(member) sizeof_field(struct fl_flow_key, member)
1683 #define FL_KEY_IS_MASKED(mask, member) \
1684 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1685 0, FL_KEY_MEMBER_SIZE(member)) \
1687 #define FL_KEY_SET(keys, cnt, id, member) \
1689 keys[cnt].key_id = id; \
1690 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1694 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1696 if (FL_KEY_IS_MASKED(mask, member)) \
1697 FL_KEY_SET(keys, cnt, id, member); \
1700 static void fl_init_dissector(struct flow_dissector *dissector,
1701 struct fl_flow_key *mask)
1703 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1706 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1707 FLOW_DISSECTOR_KEY_META, meta);
1708 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1709 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1710 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1711 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1712 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1713 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1714 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1715 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1716 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1717 FLOW_DISSECTOR_KEY_PORTS, tp);
1718 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1719 FLOW_DISSECTOR_KEY_PORTS_RANGE, tp_range);
1720 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1721 FLOW_DISSECTOR_KEY_IP, ip);
1722 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1723 FLOW_DISSECTOR_KEY_TCP, tcp);
1724 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1725 FLOW_DISSECTOR_KEY_ICMP, icmp);
1726 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1727 FLOW_DISSECTOR_KEY_ARP, arp);
1728 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1729 FLOW_DISSECTOR_KEY_MPLS, mpls);
1730 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1731 FLOW_DISSECTOR_KEY_VLAN, vlan);
1732 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1733 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1734 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1735 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1736 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1737 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1738 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1739 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1740 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1741 FL_KEY_IS_MASKED(mask, enc_ipv6))
1742 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1744 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1745 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1746 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1747 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1748 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1749 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1750 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1751 FLOW_DISSECTOR_KEY_CT, ct);
1752 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1753 FLOW_DISSECTOR_KEY_HASH, hash);
1755 skb_flow_dissector_init(dissector, keys, cnt);
1758 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1759 struct fl_flow_mask *mask)
1761 struct fl_flow_mask *newmask;
1764 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1766 return ERR_PTR(-ENOMEM);
1768 fl_mask_copy(newmask, mask);
1770 if ((newmask->key.tp_range.tp_min.dst &&
1771 newmask->key.tp_range.tp_max.dst) ||
1772 (newmask->key.tp_range.tp_min.src &&
1773 newmask->key.tp_range.tp_max.src))
1774 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1776 err = fl_init_mask_hashtable(newmask);
1780 fl_init_dissector(&newmask->dissector, &newmask->key);
1782 INIT_LIST_HEAD_RCU(&newmask->filters);
1784 refcount_set(&newmask->refcnt, 1);
1785 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1786 &newmask->ht_node, mask_ht_params);
1788 goto errout_destroy;
1790 spin_lock(&head->masks_lock);
1791 list_add_tail_rcu(&newmask->list, &head->masks);
1792 spin_unlock(&head->masks_lock);
1797 rhashtable_destroy(&newmask->ht);
1801 return ERR_PTR(err);
1804 static int fl_check_assign_mask(struct cls_fl_head *head,
1805 struct cls_fl_filter *fnew,
1806 struct cls_fl_filter *fold,
1807 struct fl_flow_mask *mask)
1809 struct fl_flow_mask *newmask;
1814 /* Insert mask as temporary node to prevent concurrent creation of mask
1815 * with same key. Any concurrent lookups with same key will return
1816 * -EAGAIN because mask's refcnt is zero.
1818 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1826 goto errout_cleanup;
1829 newmask = fl_create_new_mask(head, mask);
1830 if (IS_ERR(newmask)) {
1831 ret = PTR_ERR(newmask);
1832 goto errout_cleanup;
1835 fnew->mask = newmask;
1837 } else if (IS_ERR(fnew->mask)) {
1838 ret = PTR_ERR(fnew->mask);
1839 } else if (fold && fold->mask != fnew->mask) {
1841 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1842 /* Mask was deleted concurrently, try again */
1849 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1854 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1855 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1856 unsigned long base, struct nlattr **tb,
1857 struct nlattr *est, bool ovr,
1858 struct fl_flow_tmplt *tmplt, bool rtnl_held,
1859 struct netlink_ext_ack *extack)
1863 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
1868 if (tb[TCA_FLOWER_CLASSID]) {
1869 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1872 tcf_bind_filter(tp, &f->res, base);
1877 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1881 fl_mask_update_range(mask);
1882 fl_set_masked_key(&f->mkey, &f->key, mask);
1884 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1885 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1892 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1893 struct cls_fl_filter *fold,
1896 struct fl_flow_mask *mask = fnew->mask;
1899 err = rhashtable_lookup_insert_fast(&mask->ht,
1901 mask->filter_ht_params);
1904 /* It is okay if filter with same key exists when
1907 return fold && err == -EEXIST ? 0 : err;
1914 static int fl_change(struct net *net, struct sk_buff *in_skb,
1915 struct tcf_proto *tp, unsigned long base,
1916 u32 handle, struct nlattr **tca,
1917 void **arg, bool ovr, bool rtnl_held,
1918 struct netlink_ext_ack *extack)
1920 struct cls_fl_head *head = fl_head_dereference(tp);
1921 struct cls_fl_filter *fold = *arg;
1922 struct cls_fl_filter *fnew;
1923 struct fl_flow_mask *mask;
1928 if (!tca[TCA_OPTIONS]) {
1933 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
1939 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1942 goto errout_mask_alloc;
1945 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1946 tca[TCA_OPTIONS], fl_policy, NULL);
1950 if (fold && handle && fold->handle != handle) {
1955 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1960 INIT_LIST_HEAD(&fnew->hw_list);
1961 refcount_set(&fnew->refcnt, 1);
1963 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
1967 if (tb[TCA_FLOWER_FLAGS]) {
1968 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1970 if (!tc_flags_valid(fnew->flags)) {
1976 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
1977 tp->chain->tmplt_priv, rtnl_held, extack);
1981 err = fl_check_assign_mask(head, fnew, fold, mask);
1985 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1989 if (!tc_skip_hw(fnew->flags)) {
1990 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
1995 if (!tc_in_hw(fnew->flags))
1996 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1998 spin_lock(&tp->lock);
2000 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
2001 * proto again or create new one, if necessary.
2009 /* Fold filter was deleted concurrently. Retry lookup. */
2010 if (fold->deleted) {
2015 fnew->handle = handle;
2018 struct rhashtable_params params =
2019 fnew->mask->filter_ht_params;
2021 err = rhashtable_insert_fast(&fnew->mask->ht,
2029 refcount_inc(&fnew->refcnt);
2030 rhashtable_remove_fast(&fold->mask->ht,
2032 fold->mask->filter_ht_params);
2033 idr_replace(&head->handle_idr, fnew, fnew->handle);
2034 list_replace_rcu(&fold->list, &fnew->list);
2035 fold->deleted = true;
2037 spin_unlock(&tp->lock);
2039 fl_mask_put(head, fold->mask);
2040 if (!tc_skip_hw(fold->flags))
2041 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
2042 tcf_unbind_filter(tp, &fold->res);
2043 /* Caller holds reference to fold, so refcnt is always > 0
2046 refcount_dec(&fold->refcnt);
2050 /* user specifies a handle and it doesn't exist */
2051 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2052 handle, GFP_ATOMIC);
2054 /* Filter with specified handle was concurrently
2055 * inserted after initial check in cls_api. This is not
2056 * necessarily an error if NLM_F_EXCL is not set in
2057 * message flags. Returning EAGAIN will cause cls_api to
2058 * try to update concurrently inserted rule.
2064 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
2065 INT_MAX, GFP_ATOMIC);
2070 refcount_inc(&fnew->refcnt);
2071 fnew->handle = handle;
2072 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
2073 spin_unlock(&tp->lock);
2079 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2083 spin_lock(&tp->lock);
2085 fnew->deleted = true;
2086 spin_unlock(&tp->lock);
2087 if (!tc_skip_hw(fnew->flags))
2088 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
2090 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
2091 fnew->mask->filter_ht_params);
2093 fl_mask_put(head, fnew->mask);
2099 tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
2106 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
2107 bool rtnl_held, struct netlink_ext_ack *extack)
2109 struct cls_fl_head *head = fl_head_dereference(tp);
2110 struct cls_fl_filter *f = arg;
2114 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
2115 *last = list_empty(&head->masks);
2121 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
2124 struct cls_fl_head *head = fl_head_dereference(tp);
2125 unsigned long id = arg->cookie, tmp;
2126 struct cls_fl_filter *f;
2128 arg->count = arg->skip;
2130 idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
2131 /* don't return filters that are being deleted */
2132 if (!refcount_inc_not_zero(&f->refcnt))
2134 if (arg->fn(tp, f, arg) < 0) {
2145 static struct cls_fl_filter *
2146 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
2148 struct cls_fl_head *head = fl_head_dereference(tp);
2150 spin_lock(&tp->lock);
2151 if (list_empty(&head->hw_filters)) {
2152 spin_unlock(&tp->lock);
2157 f = list_entry(&head->hw_filters, struct cls_fl_filter,
2159 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
2160 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
2161 spin_unlock(&tp->lock);
2166 spin_unlock(&tp->lock);
2170 static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
2171 void *cb_priv, struct netlink_ext_ack *extack)
2173 struct tcf_block *block = tp->chain->block;
2174 struct flow_cls_offload cls_flower = {};
2175 struct cls_fl_filter *f = NULL;
2178 /* hw_filters list can only be changed by hw offload functions after
2179 * obtaining rtnl lock. Make sure it is not changed while reoffload is
2184 while ((f = fl_get_next_hw_filter(tp, f, add))) {
2186 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
2187 if (!cls_flower.rule) {
2192 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
2194 cls_flower.command = add ?
2195 FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
2196 cls_flower.cookie = (unsigned long)f;
2197 cls_flower.rule->match.dissector = &f->mask->dissector;
2198 cls_flower.rule->match.mask = &f->mask->key;
2199 cls_flower.rule->match.key = &f->mkey;
2201 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
2203 kfree(cls_flower.rule);
2204 if (tc_skip_sw(f->flags)) {
2205 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
2212 cls_flower.classid = f->res.classid;
2214 err = tc_setup_cb_reoffload(block, tp, add, cb,
2215 TC_SETUP_CLSFLOWER, &cls_flower,
2218 tc_cleanup_flow_action(&cls_flower.rule->action);
2219 kfree(cls_flower.rule);
2232 static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2234 struct flow_cls_offload *cls_flower = type_data;
2235 struct cls_fl_filter *f =
2236 (struct cls_fl_filter *) cls_flower->cookie;
2237 struct cls_fl_head *head = fl_head_dereference(tp);
2239 spin_lock(&tp->lock);
2240 list_add(&f->hw_list, &head->hw_filters);
2241 spin_unlock(&tp->lock);
2244 static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2246 struct flow_cls_offload *cls_flower = type_data;
2247 struct cls_fl_filter *f =
2248 (struct cls_fl_filter *) cls_flower->cookie;
2250 spin_lock(&tp->lock);
2251 if (!list_empty(&f->hw_list))
2252 list_del_init(&f->hw_list);
2253 spin_unlock(&tp->lock);
2256 static int fl_hw_create_tmplt(struct tcf_chain *chain,
2257 struct fl_flow_tmplt *tmplt)
2259 struct flow_cls_offload cls_flower = {};
2260 struct tcf_block *block = chain->block;
2262 cls_flower.rule = flow_rule_alloc(0);
2263 if (!cls_flower.rule)
2266 cls_flower.common.chain_index = chain->index;
2267 cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2268 cls_flower.cookie = (unsigned long) tmplt;
2269 cls_flower.rule->match.dissector = &tmplt->dissector;
2270 cls_flower.rule->match.mask = &tmplt->mask;
2271 cls_flower.rule->match.key = &tmplt->dummy_key;
2273 /* We don't care if driver (any of them) fails to handle this
2274 * call. It serves just as a hint for it.
2276 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2277 kfree(cls_flower.rule);
2282 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2283 struct fl_flow_tmplt *tmplt)
2285 struct flow_cls_offload cls_flower = {};
2286 struct tcf_block *block = chain->block;
2288 cls_flower.common.chain_index = chain->index;
2289 cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2290 cls_flower.cookie = (unsigned long) tmplt;
2292 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2295 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2296 struct nlattr **tca,
2297 struct netlink_ext_ack *extack)
2299 struct fl_flow_tmplt *tmplt;
2303 if (!tca[TCA_OPTIONS])
2304 return ERR_PTR(-EINVAL);
2306 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2308 return ERR_PTR(-ENOBUFS);
2309 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2310 tca[TCA_OPTIONS], fl_policy, NULL);
2314 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2319 tmplt->chain = chain;
2320 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2324 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2326 err = fl_hw_create_tmplt(chain, tmplt);
2337 return ERR_PTR(err);
2340 static void fl_tmplt_destroy(void *tmplt_priv)
2342 struct fl_flow_tmplt *tmplt = tmplt_priv;
2344 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2348 static int fl_dump_key_val(struct sk_buff *skb,
2349 void *val, int val_type,
2350 void *mask, int mask_type, int len)
2354 if (!memchr_inv(mask, 0, len))
2356 err = nla_put(skb, val_type, len, val);
2359 if (mask_type != TCA_FLOWER_UNSPEC) {
2360 err = nla_put(skb, mask_type, len, mask);
2367 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2368 struct fl_flow_key *mask)
2370 if (fl_dump_key_val(skb, &key->tp_range.tp_min.dst,
2371 TCA_FLOWER_KEY_PORT_DST_MIN,
2372 &mask->tp_range.tp_min.dst, TCA_FLOWER_UNSPEC,
2373 sizeof(key->tp_range.tp_min.dst)) ||
2374 fl_dump_key_val(skb, &key->tp_range.tp_max.dst,
2375 TCA_FLOWER_KEY_PORT_DST_MAX,
2376 &mask->tp_range.tp_max.dst, TCA_FLOWER_UNSPEC,
2377 sizeof(key->tp_range.tp_max.dst)) ||
2378 fl_dump_key_val(skb, &key->tp_range.tp_min.src,
2379 TCA_FLOWER_KEY_PORT_SRC_MIN,
2380 &mask->tp_range.tp_min.src, TCA_FLOWER_UNSPEC,
2381 sizeof(key->tp_range.tp_min.src)) ||
2382 fl_dump_key_val(skb, &key->tp_range.tp_max.src,
2383 TCA_FLOWER_KEY_PORT_SRC_MAX,
2384 &mask->tp_range.tp_max.src, TCA_FLOWER_UNSPEC,
2385 sizeof(key->tp_range.tp_max.src)))
2391 static int fl_dump_key_mpls_opt_lse(struct sk_buff *skb,
2392 struct flow_dissector_key_mpls *mpls_key,
2393 struct flow_dissector_key_mpls *mpls_mask,
2396 struct flow_dissector_mpls_lse *lse_mask = &mpls_mask->ls[lse_index];
2397 struct flow_dissector_mpls_lse *lse_key = &mpls_key->ls[lse_index];
2400 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_DEPTH,
2405 if (lse_mask->mpls_ttl) {
2406 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TTL,
2411 if (lse_mask->mpls_bos) {
2412 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_BOS,
2417 if (lse_mask->mpls_tc) {
2418 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_TC,
2423 if (lse_mask->mpls_label) {
2424 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_OPT_LSE_LABEL,
2425 lse_key->mpls_label);
2433 static int fl_dump_key_mpls_opts(struct sk_buff *skb,
2434 struct flow_dissector_key_mpls *mpls_key,
2435 struct flow_dissector_key_mpls *mpls_mask)
2437 struct nlattr *opts;
2442 opts = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS);
2446 for (lse_index = 0; lse_index < FLOW_DIS_MPLS_MAX; lse_index++) {
2447 if (!(mpls_mask->used_lses & 1 << lse_index))
2450 lse = nla_nest_start(skb, TCA_FLOWER_KEY_MPLS_OPTS_LSE);
2456 err = fl_dump_key_mpls_opt_lse(skb, mpls_key, mpls_mask,
2460 nla_nest_end(skb, lse);
2462 nla_nest_end(skb, opts);
2467 nla_nest_cancel(skb, lse);
2469 nla_nest_cancel(skb, opts);
2474 static int fl_dump_key_mpls(struct sk_buff *skb,
2475 struct flow_dissector_key_mpls *mpls_key,
2476 struct flow_dissector_key_mpls *mpls_mask)
2478 struct flow_dissector_mpls_lse *lse_mask;
2479 struct flow_dissector_mpls_lse *lse_key;
2482 if (!mpls_mask->used_lses)
2485 lse_mask = &mpls_mask->ls[0];
2486 lse_key = &mpls_key->ls[0];
2488 /* For backward compatibility, don't use the MPLS nested attributes if
2489 * the rule can be expressed using the old attributes.
2491 if (mpls_mask->used_lses & ~1 ||
2492 (!lse_mask->mpls_ttl && !lse_mask->mpls_bos &&
2493 !lse_mask->mpls_tc && !lse_mask->mpls_label))
2494 return fl_dump_key_mpls_opts(skb, mpls_key, mpls_mask);
2496 if (lse_mask->mpls_ttl) {
2497 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2502 if (lse_mask->mpls_tc) {
2503 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2508 if (lse_mask->mpls_label) {
2509 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2510 lse_key->mpls_label);
2514 if (lse_mask->mpls_bos) {
2515 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2523 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2524 struct flow_dissector_key_ip *key,
2525 struct flow_dissector_key_ip *mask)
2527 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2528 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2529 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2530 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2532 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2533 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2539 static int fl_dump_key_vlan(struct sk_buff *skb,
2540 int vlan_id_key, int vlan_prio_key,
2541 struct flow_dissector_key_vlan *vlan_key,
2542 struct flow_dissector_key_vlan *vlan_mask)
2546 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2548 if (vlan_mask->vlan_id) {
2549 err = nla_put_u16(skb, vlan_id_key,
2554 if (vlan_mask->vlan_priority) {
2555 err = nla_put_u8(skb, vlan_prio_key,
2556 vlan_key->vlan_priority);
2563 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2564 u32 *flower_key, u32 *flower_mask,
2565 u32 flower_flag_bit, u32 dissector_flag_bit)
2567 if (dissector_mask & dissector_flag_bit) {
2568 *flower_mask |= flower_flag_bit;
2569 if (dissector_key & dissector_flag_bit)
2570 *flower_key |= flower_flag_bit;
2574 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2580 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2586 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2587 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2588 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2589 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2590 FLOW_DIS_FIRST_FRAG);
2592 _key = cpu_to_be32(key);
2593 _mask = cpu_to_be32(mask);
2595 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2599 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2602 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2603 struct flow_dissector_key_enc_opts *enc_opts)
2605 struct geneve_opt *opt;
2606 struct nlattr *nest;
2609 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2611 goto nla_put_failure;
2613 while (enc_opts->len > opt_off) {
2614 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2616 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2618 goto nla_put_failure;
2619 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2621 goto nla_put_failure;
2622 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2623 opt->length * 4, opt->opt_data))
2624 goto nla_put_failure;
2626 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2628 nla_nest_end(skb, nest);
2632 nla_nest_cancel(skb, nest);
2636 static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2637 struct flow_dissector_key_enc_opts *enc_opts)
2639 struct vxlan_metadata *md;
2640 struct nlattr *nest;
2642 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2644 goto nla_put_failure;
2646 md = (struct vxlan_metadata *)&enc_opts->data[0];
2647 if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2648 goto nla_put_failure;
2650 nla_nest_end(skb, nest);
2654 nla_nest_cancel(skb, nest);
2658 static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2659 struct flow_dissector_key_enc_opts *enc_opts)
2661 struct erspan_metadata *md;
2662 struct nlattr *nest;
2664 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2666 goto nla_put_failure;
2668 md = (struct erspan_metadata *)&enc_opts->data[0];
2669 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2670 goto nla_put_failure;
2672 if (md->version == 1 &&
2673 nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2674 goto nla_put_failure;
2676 if (md->version == 2 &&
2677 (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2679 nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2680 get_hwid(&md->u.md2))))
2681 goto nla_put_failure;
2683 nla_nest_end(skb, nest);
2687 nla_nest_cancel(skb, nest);
2691 static int fl_dump_key_ct(struct sk_buff *skb,
2692 struct flow_dissector_key_ct *key,
2693 struct flow_dissector_key_ct *mask)
2695 if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2696 fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2697 &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2698 sizeof(key->ct_state)))
2699 goto nla_put_failure;
2701 if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2702 fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2703 &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2704 sizeof(key->ct_zone)))
2705 goto nla_put_failure;
2707 if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2708 fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2709 &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2710 sizeof(key->ct_mark)))
2711 goto nla_put_failure;
2713 if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2714 fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2715 &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2716 sizeof(key->ct_labels)))
2717 goto nla_put_failure;
2725 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2726 struct flow_dissector_key_enc_opts *enc_opts)
2728 struct nlattr *nest;
2734 nest = nla_nest_start_noflag(skb, enc_opt_type);
2736 goto nla_put_failure;
2738 switch (enc_opts->dst_opt_type) {
2739 case TUNNEL_GENEVE_OPT:
2740 err = fl_dump_key_geneve_opt(skb, enc_opts);
2742 goto nla_put_failure;
2744 case TUNNEL_VXLAN_OPT:
2745 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2747 goto nla_put_failure;
2749 case TUNNEL_ERSPAN_OPT:
2750 err = fl_dump_key_erspan_opt(skb, enc_opts);
2752 goto nla_put_failure;
2755 goto nla_put_failure;
2757 nla_nest_end(skb, nest);
2761 nla_nest_cancel(skb, nest);
2765 static int fl_dump_key_enc_opt(struct sk_buff *skb,
2766 struct flow_dissector_key_enc_opts *key_opts,
2767 struct flow_dissector_key_enc_opts *msk_opts)
2771 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2775 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2778 static int fl_dump_key(struct sk_buff *skb, struct net *net,
2779 struct fl_flow_key *key, struct fl_flow_key *mask)
2781 if (mask->meta.ingress_ifindex) {
2782 struct net_device *dev;
2784 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
2785 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2786 goto nla_put_failure;
2789 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2790 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2791 sizeof(key->eth.dst)) ||
2792 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2793 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2794 sizeof(key->eth.src)) ||
2795 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2796 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2797 sizeof(key->basic.n_proto)))
2798 goto nla_put_failure;
2800 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2801 goto nla_put_failure;
2803 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2804 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
2805 goto nla_put_failure;
2807 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2808 TCA_FLOWER_KEY_CVLAN_PRIO,
2809 &key->cvlan, &mask->cvlan) ||
2810 (mask->cvlan.vlan_tpid &&
2811 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2812 key->cvlan.vlan_tpid)))
2813 goto nla_put_failure;
2815 if (mask->basic.n_proto) {
2816 if (mask->cvlan.vlan_tpid) {
2817 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2818 key->basic.n_proto))
2819 goto nla_put_failure;
2820 } else if (mask->vlan.vlan_tpid) {
2821 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2822 key->basic.n_proto))
2823 goto nla_put_failure;
2827 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2828 key->basic.n_proto == htons(ETH_P_IPV6)) &&
2829 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
2830 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
2831 sizeof(key->basic.ip_proto)) ||
2832 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
2833 goto nla_put_failure;
2835 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2836 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2837 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2838 sizeof(key->ipv4.src)) ||
2839 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2840 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2841 sizeof(key->ipv4.dst))))
2842 goto nla_put_failure;
2843 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2844 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2845 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2846 sizeof(key->ipv6.src)) ||
2847 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2848 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2849 sizeof(key->ipv6.dst))))
2850 goto nla_put_failure;
2852 if (key->basic.ip_proto == IPPROTO_TCP &&
2853 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
2854 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
2855 sizeof(key->tp.src)) ||
2856 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
2857 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
2858 sizeof(key->tp.dst)) ||
2859 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2860 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2861 sizeof(key->tcp.flags))))
2862 goto nla_put_failure;
2863 else if (key->basic.ip_proto == IPPROTO_UDP &&
2864 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
2865 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
2866 sizeof(key->tp.src)) ||
2867 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
2868 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
2869 sizeof(key->tp.dst))))
2870 goto nla_put_failure;
2871 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2872 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2873 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2874 sizeof(key->tp.src)) ||
2875 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2876 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
2877 sizeof(key->tp.dst))))
2878 goto nla_put_failure;
2879 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2880 key->basic.ip_proto == IPPROTO_ICMP &&
2881 (fl_dump_key_val(skb, &key->icmp.type,
2882 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2883 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2884 sizeof(key->icmp.type)) ||
2885 fl_dump_key_val(skb, &key->icmp.code,
2886 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2887 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2888 sizeof(key->icmp.code))))
2889 goto nla_put_failure;
2890 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2891 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2892 (fl_dump_key_val(skb, &key->icmp.type,
2893 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2894 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2895 sizeof(key->icmp.type)) ||
2896 fl_dump_key_val(skb, &key->icmp.code,
2897 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2898 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2899 sizeof(key->icmp.code))))
2900 goto nla_put_failure;
2901 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2902 key->basic.n_proto == htons(ETH_P_RARP)) &&
2903 (fl_dump_key_val(skb, &key->arp.sip,
2904 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2905 TCA_FLOWER_KEY_ARP_SIP_MASK,
2906 sizeof(key->arp.sip)) ||
2907 fl_dump_key_val(skb, &key->arp.tip,
2908 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2909 TCA_FLOWER_KEY_ARP_TIP_MASK,
2910 sizeof(key->arp.tip)) ||
2911 fl_dump_key_val(skb, &key->arp.op,
2912 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2913 TCA_FLOWER_KEY_ARP_OP_MASK,
2914 sizeof(key->arp.op)) ||
2915 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2916 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2917 sizeof(key->arp.sha)) ||
2918 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2919 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2920 sizeof(key->arp.tha))))
2921 goto nla_put_failure;
2923 if ((key->basic.ip_proto == IPPROTO_TCP ||
2924 key->basic.ip_proto == IPPROTO_UDP ||
2925 key->basic.ip_proto == IPPROTO_SCTP) &&
2926 fl_dump_key_port_range(skb, key, mask))
2927 goto nla_put_failure;
2929 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2930 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2931 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2932 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2933 sizeof(key->enc_ipv4.src)) ||
2934 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2935 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2936 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2937 sizeof(key->enc_ipv4.dst))))
2938 goto nla_put_failure;
2939 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2940 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2941 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2942 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2943 sizeof(key->enc_ipv6.src)) ||
2944 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2945 TCA_FLOWER_KEY_ENC_IPV6_DST,
2946 &mask->enc_ipv6.dst,
2947 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2948 sizeof(key->enc_ipv6.dst))))
2949 goto nla_put_failure;
2951 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
2952 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
2953 sizeof(key->enc_key_id)) ||
2954 fl_dump_key_val(skb, &key->enc_tp.src,
2955 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2957 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2958 sizeof(key->enc_tp.src)) ||
2959 fl_dump_key_val(skb, &key->enc_tp.dst,
2960 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2962 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
2963 sizeof(key->enc_tp.dst)) ||
2964 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2965 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
2966 goto nla_put_failure;
2968 if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
2969 goto nla_put_failure;
2971 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2972 goto nla_put_failure;
2974 if (fl_dump_key_val(skb, &key->hash.hash, TCA_FLOWER_KEY_HASH,
2975 &mask->hash.hash, TCA_FLOWER_KEY_HASH_MASK,
2976 sizeof(key->hash.hash)))
2977 goto nla_put_failure;
2985 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2986 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
2988 struct cls_fl_filter *f = fh;
2989 struct nlattr *nest;
2990 struct fl_flow_key *key, *mask;
2996 t->tcm_handle = f->handle;
2998 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3000 goto nla_put_failure;
3002 spin_lock(&tp->lock);
3004 if (f->res.classid &&
3005 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
3006 goto nla_put_failure_locked;
3009 mask = &f->mask->key;
3010 skip_hw = tc_skip_hw(f->flags);
3012 if (fl_dump_key(skb, net, key, mask))
3013 goto nla_put_failure_locked;
3015 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3016 goto nla_put_failure_locked;
3018 spin_unlock(&tp->lock);
3021 fl_hw_update_stats(tp, f, rtnl_held);
3023 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
3024 goto nla_put_failure;
3026 if (tcf_exts_dump(skb, &f->exts))
3027 goto nla_put_failure;
3029 nla_nest_end(skb, nest);
3031 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
3032 goto nla_put_failure;
3036 nla_put_failure_locked:
3037 spin_unlock(&tp->lock);
3039 nla_nest_cancel(skb, nest);
3043 static int fl_terse_dump(struct net *net, struct tcf_proto *tp, void *fh,
3044 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
3046 struct cls_fl_filter *f = fh;
3047 struct nlattr *nest;
3053 t->tcm_handle = f->handle;
3055 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3057 goto nla_put_failure;
3059 spin_lock(&tp->lock);
3061 skip_hw = tc_skip_hw(f->flags);
3063 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
3064 goto nla_put_failure_locked;
3066 spin_unlock(&tp->lock);
3069 fl_hw_update_stats(tp, f, rtnl_held);
3071 if (tcf_exts_terse_dump(skb, &f->exts))
3072 goto nla_put_failure;
3074 nla_nest_end(skb, nest);
3078 nla_put_failure_locked:
3079 spin_unlock(&tp->lock);
3081 nla_nest_cancel(skb, nest);
3085 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
3087 struct fl_flow_tmplt *tmplt = tmplt_priv;
3088 struct fl_flow_key *key, *mask;
3089 struct nlattr *nest;
3091 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
3093 goto nla_put_failure;
3095 key = &tmplt->dummy_key;
3096 mask = &tmplt->mask;
3098 if (fl_dump_key(skb, net, key, mask))
3099 goto nla_put_failure;
3101 nla_nest_end(skb, nest);
3106 nla_nest_cancel(skb, nest);
3110 static void fl_bind_class(void *fh, u32 classid, unsigned long cl, void *q,
3113 struct cls_fl_filter *f = fh;
3115 if (f && f->res.classid == classid) {
3117 __tcf_bind_filter(q, &f->res, base);
3119 __tcf_unbind_filter(q, &f->res);
3123 static bool fl_delete_empty(struct tcf_proto *tp)
3125 struct cls_fl_head *head = fl_head_dereference(tp);
3127 spin_lock(&tp->lock);
3128 tp->deleting = idr_is_empty(&head->handle_idr);
3129 spin_unlock(&tp->lock);
3131 return tp->deleting;
3134 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
3136 .classify = fl_classify,
3138 .destroy = fl_destroy,
3141 .change = fl_change,
3142 .delete = fl_delete,
3143 .delete_empty = fl_delete_empty,
3145 .reoffload = fl_reoffload,
3146 .hw_add = fl_hw_add,
3147 .hw_del = fl_hw_del,
3149 .terse_dump = fl_terse_dump,
3150 .bind_class = fl_bind_class,
3151 .tmplt_create = fl_tmplt_create,
3152 .tmplt_destroy = fl_tmplt_destroy,
3153 .tmplt_dump = fl_tmplt_dump,
3154 .owner = THIS_MODULE,
3155 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
3158 static int __init cls_fl_init(void)
3160 return register_tcf_proto_ops(&cls_fl_ops);
3163 static void __exit cls_fl_exit(void)
3165 unregister_tcf_proto_ops(&cls_fl_ops);
3168 module_init(cls_fl_init);
3169 module_exit(cls_fl_exit);
3171 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
3172 MODULE_DESCRIPTION("Flower classifier");
3173 MODULE_LICENSE("GPL v2");