2 * net/sched/cls_flower.c Flower classifier
4 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/module.h>
15 #include <linux/rhashtable.h>
16 #include <linux/workqueue.h>
17 #include <linux/refcount.h>
19 #include <linux/if_ether.h>
20 #include <linux/in6.h>
22 #include <linux/mpls.h>
24 #include <net/sch_generic.h>
25 #include <net/pkt_cls.h>
27 #include <net/flow_dissector.h>
28 #include <net/geneve.h>
31 #include <net/dst_metadata.h>
35 struct flow_dissector_key_control control;
36 struct flow_dissector_key_control enc_control;
37 struct flow_dissector_key_basic basic;
38 struct flow_dissector_key_eth_addrs eth;
39 struct flow_dissector_key_vlan vlan;
40 struct flow_dissector_key_vlan cvlan;
42 struct flow_dissector_key_ipv4_addrs ipv4;
43 struct flow_dissector_key_ipv6_addrs ipv6;
45 struct flow_dissector_key_ports tp;
46 struct flow_dissector_key_icmp icmp;
47 struct flow_dissector_key_arp arp;
48 struct flow_dissector_key_keyid enc_key_id;
50 struct flow_dissector_key_ipv4_addrs enc_ipv4;
51 struct flow_dissector_key_ipv6_addrs enc_ipv6;
53 struct flow_dissector_key_ports enc_tp;
54 struct flow_dissector_key_mpls mpls;
55 struct flow_dissector_key_tcp tcp;
56 struct flow_dissector_key_ip ip;
57 struct flow_dissector_key_ip enc_ip;
58 struct flow_dissector_key_enc_opts enc_opts;
59 struct flow_dissector_key_ports tp_min;
60 struct flow_dissector_key_ports tp_max;
61 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
63 struct fl_flow_mask_range {
64 unsigned short int start;
65 unsigned short int end;
69 struct fl_flow_key key;
70 struct fl_flow_mask_range range;
72 struct rhash_head ht_node;
74 struct rhashtable_params filter_ht_params;
75 struct flow_dissector dissector;
76 struct list_head filters;
77 struct rcu_work rwork;
78 struct list_head list;
82 struct fl_flow_tmplt {
83 struct fl_flow_key dummy_key;
84 struct fl_flow_key mask;
85 struct flow_dissector dissector;
86 struct tcf_chain *chain;
91 spinlock_t masks_lock; /* Protect masks list */
92 struct list_head masks;
93 struct list_head hw_filters;
94 struct rcu_work rwork;
95 struct idr handle_idr;
98 struct cls_fl_filter {
99 struct fl_flow_mask *mask;
100 struct rhash_head ht_node;
101 struct fl_flow_key mkey;
102 struct tcf_exts exts;
103 struct tcf_result res;
104 struct fl_flow_key key;
105 struct list_head list;
106 struct list_head hw_list;
110 struct rcu_work rwork;
111 struct net_device *hw_dev;
112 /* Flower classifier is unlocked, which means that its reference counter
113 * can be changed concurrently without any kind of external
114 * synchronization. Use atomic reference counter to be concurrency-safe.
120 static const struct rhashtable_params mask_ht_params = {
121 .key_offset = offsetof(struct fl_flow_mask, key),
122 .key_len = sizeof(struct fl_flow_key),
123 .head_offset = offsetof(struct fl_flow_mask, ht_node),
124 .automatic_shrinking = true,
127 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
129 return mask->range.end - mask->range.start;
132 static void fl_mask_update_range(struct fl_flow_mask *mask)
134 const u8 *bytes = (const u8 *) &mask->key;
135 size_t size = sizeof(mask->key);
136 size_t i, first = 0, last;
138 for (i = 0; i < size; i++) {
145 for (i = size - 1; i != first; i--) {
151 mask->range.start = rounddown(first, sizeof(long));
152 mask->range.end = roundup(last + 1, sizeof(long));
155 static void *fl_key_get_start(struct fl_flow_key *key,
156 const struct fl_flow_mask *mask)
158 return (u8 *) key + mask->range.start;
161 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
162 struct fl_flow_mask *mask)
164 const long *lkey = fl_key_get_start(key, mask);
165 const long *lmask = fl_key_get_start(&mask->key, mask);
166 long *lmkey = fl_key_get_start(mkey, mask);
169 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
170 *lmkey++ = *lkey++ & *lmask++;
173 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
174 struct fl_flow_mask *mask)
176 const long *lmask = fl_key_get_start(&mask->key, mask);
182 ltmplt = fl_key_get_start(&tmplt->mask, mask);
183 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
184 if (~*ltmplt++ & *lmask++)
190 static void fl_clear_masked_range(struct fl_flow_key *key,
191 struct fl_flow_mask *mask)
193 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
196 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
197 struct fl_flow_key *key,
198 struct fl_flow_key *mkey)
200 __be16 min_mask, max_mask, min_val, max_val;
202 min_mask = htons(filter->mask->key.tp_min.dst);
203 max_mask = htons(filter->mask->key.tp_max.dst);
204 min_val = htons(filter->key.tp_min.dst);
205 max_val = htons(filter->key.tp_max.dst);
207 if (min_mask && max_mask) {
208 if (htons(key->tp.dst) < min_val ||
209 htons(key->tp.dst) > max_val)
212 /* skb does not have min and max values */
213 mkey->tp_min.dst = filter->mkey.tp_min.dst;
214 mkey->tp_max.dst = filter->mkey.tp_max.dst;
219 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
220 struct fl_flow_key *key,
221 struct fl_flow_key *mkey)
223 __be16 min_mask, max_mask, min_val, max_val;
225 min_mask = htons(filter->mask->key.tp_min.src);
226 max_mask = htons(filter->mask->key.tp_max.src);
227 min_val = htons(filter->key.tp_min.src);
228 max_val = htons(filter->key.tp_max.src);
230 if (min_mask && max_mask) {
231 if (htons(key->tp.src) < min_val ||
232 htons(key->tp.src) > max_val)
235 /* skb does not have min and max values */
236 mkey->tp_min.src = filter->mkey.tp_min.src;
237 mkey->tp_max.src = filter->mkey.tp_max.src;
242 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
243 struct fl_flow_key *mkey)
245 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
246 mask->filter_ht_params);
249 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
250 struct fl_flow_key *mkey,
251 struct fl_flow_key *key)
253 struct cls_fl_filter *filter, *f;
255 list_for_each_entry_rcu(filter, &mask->filters, list) {
256 if (!fl_range_port_dst_cmp(filter, key, mkey))
259 if (!fl_range_port_src_cmp(filter, key, mkey))
262 f = __fl_lookup(mask, mkey);
269 static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
270 struct fl_flow_key *mkey,
271 struct fl_flow_key *key)
273 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
274 return fl_lookup_range(mask, mkey, key);
276 return __fl_lookup(mask, mkey);
279 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
280 struct tcf_result *res)
282 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
283 struct cls_fl_filter *f;
284 struct fl_flow_mask *mask;
285 struct fl_flow_key skb_key;
286 struct fl_flow_key skb_mkey;
288 list_for_each_entry_rcu(mask, &head->masks, list) {
289 fl_clear_masked_range(&skb_key, mask);
291 skb_key.indev_ifindex = skb->skb_iif;
292 /* skb_flow_dissect() does not set n_proto in case an unknown
293 * protocol, so do it rather here.
295 skb_key.basic.n_proto = skb->protocol;
296 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
297 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
299 fl_set_masked_key(&skb_mkey, &skb_key, mask);
301 f = fl_lookup(mask, &skb_mkey, &skb_key);
302 if (f && !tc_skip_sw(f->flags)) {
304 return tcf_exts_exec(skb, &f->exts, res);
310 static int fl_init(struct tcf_proto *tp)
312 struct cls_fl_head *head;
314 head = kzalloc(sizeof(*head), GFP_KERNEL);
318 spin_lock_init(&head->masks_lock);
319 INIT_LIST_HEAD_RCU(&head->masks);
320 INIT_LIST_HEAD(&head->hw_filters);
321 rcu_assign_pointer(tp->root, head);
322 idr_init(&head->handle_idr);
324 return rhashtable_init(&head->ht, &mask_ht_params);
327 static void fl_mask_free(struct fl_flow_mask *mask)
329 WARN_ON(!list_empty(&mask->filters));
330 rhashtable_destroy(&mask->ht);
334 static void fl_mask_free_work(struct work_struct *work)
336 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
337 struct fl_flow_mask, rwork);
342 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
344 if (!refcount_dec_and_test(&mask->refcnt))
347 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
349 spin_lock(&head->masks_lock);
350 list_del_rcu(&mask->list);
351 spin_unlock(&head->masks_lock);
353 tcf_queue_work(&mask->rwork, fl_mask_free_work);
358 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
360 /* Flower classifier only changes root pointer during init and destroy.
361 * Users must obtain reference to tcf_proto instance before calling its
362 * API, so tp->root pointer is protected from concurrent call to
363 * fl_destroy() by reference counting.
365 return rcu_dereference_raw(tp->root);
368 static void __fl_destroy_filter(struct cls_fl_filter *f)
370 tcf_exts_destroy(&f->exts);
371 tcf_exts_put_net(&f->exts);
375 static void fl_destroy_filter_work(struct work_struct *work)
377 struct cls_fl_filter *f = container_of(to_rcu_work(work),
378 struct cls_fl_filter, rwork);
380 __fl_destroy_filter(f);
383 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
384 bool rtnl_held, struct netlink_ext_ack *extack)
386 struct tc_cls_flower_offload cls_flower = {};
387 struct tcf_block *block = tp->chain->block;
392 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
393 cls_flower.command = TC_CLSFLOWER_DESTROY;
394 cls_flower.cookie = (unsigned long) f;
396 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
397 spin_lock(&tp->lock);
398 list_del_init(&f->hw_list);
399 tcf_block_offload_dec(block, &f->flags);
400 spin_unlock(&tp->lock);
406 static int fl_hw_replace_filter(struct tcf_proto *tp,
407 struct cls_fl_filter *f, bool rtnl_held,
408 struct netlink_ext_ack *extack)
410 struct cls_fl_head *head = fl_head_dereference(tp);
411 struct tc_cls_flower_offload cls_flower = {};
412 struct tcf_block *block = tp->chain->block;
413 bool skip_sw = tc_skip_sw(f->flags);
419 cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
420 if (!cls_flower.rule) {
425 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
426 cls_flower.command = TC_CLSFLOWER_REPLACE;
427 cls_flower.cookie = (unsigned long) f;
428 cls_flower.rule->match.dissector = &f->mask->dissector;
429 cls_flower.rule->match.mask = &f->mask->key;
430 cls_flower.rule->match.key = &f->mkey;
431 cls_flower.classid = f->res.classid;
433 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
435 kfree(cls_flower.rule);
437 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
443 err = tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, skip_sw);
444 kfree(cls_flower.rule);
447 fl_hw_destroy_filter(tp, f, true, NULL);
449 } else if (err > 0) {
450 f->in_hw_count = err;
452 spin_lock(&tp->lock);
453 tcf_block_offload_inc(block, &f->flags);
454 spin_unlock(&tp->lock);
457 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW)) {
462 spin_lock(&tp->lock);
463 list_add(&f->hw_list, &head->hw_filters);
464 spin_unlock(&tp->lock);
472 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
475 struct tc_cls_flower_offload cls_flower = {};
476 struct tcf_block *block = tp->chain->block;
481 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
482 cls_flower.command = TC_CLSFLOWER_STATS;
483 cls_flower.cookie = (unsigned long) f;
484 cls_flower.classid = f->res.classid;
486 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
488 tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
489 cls_flower.stats.pkts,
490 cls_flower.stats.lastused);
496 static void __fl_put(struct cls_fl_filter *f)
498 if (!refcount_dec_and_test(&f->refcnt))
501 if (tcf_exts_get_net(&f->exts))
502 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
504 __fl_destroy_filter(f);
507 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
509 struct cls_fl_filter *f;
512 f = idr_find(&head->handle_idr, handle);
513 if (f && !refcount_inc_not_zero(&f->refcnt))
520 static struct cls_fl_filter *fl_get_next_filter(struct tcf_proto *tp,
521 unsigned long *handle)
523 struct cls_fl_head *head = fl_head_dereference(tp);
524 struct cls_fl_filter *f;
527 while ((f = idr_get_next_ul(&head->handle_idr, handle))) {
528 /* don't return filters that are being deleted */
529 if (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_TCP_FLAGS] = { .type = NLA_U16 },
686 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
687 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
688 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
689 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
690 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
691 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
692 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
693 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
694 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
695 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
696 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
697 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
698 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
699 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
702 static const struct nla_policy
703 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
704 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
707 static const struct nla_policy
708 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
709 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
710 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
711 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
715 static void fl_set_key_val(struct nlattr **tb,
716 void *val, int val_type,
717 void *mask, int mask_type, int len)
721 memcpy(val, nla_data(tb[val_type]), len);
722 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
723 memset(mask, 0xff, len);
725 memcpy(mask, nla_data(tb[mask_type]), len);
728 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
729 struct fl_flow_key *mask)
731 fl_set_key_val(tb, &key->tp_min.dst,
732 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
733 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
734 fl_set_key_val(tb, &key->tp_max.dst,
735 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
736 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
737 fl_set_key_val(tb, &key->tp_min.src,
738 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
739 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
740 fl_set_key_val(tb, &key->tp_max.src,
741 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
742 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
744 if ((mask->tp_min.dst && mask->tp_max.dst &&
745 htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
746 (mask->tp_min.src && mask->tp_max.src &&
747 htons(key->tp_max.src) <= htons(key->tp_min.src)))
753 static int fl_set_key_mpls(struct nlattr **tb,
754 struct flow_dissector_key_mpls *key_val,
755 struct flow_dissector_key_mpls *key_mask)
757 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
758 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
759 key_mask->mpls_ttl = MPLS_TTL_MASK;
761 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
762 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
764 if (bos & ~MPLS_BOS_MASK)
766 key_val->mpls_bos = bos;
767 key_mask->mpls_bos = MPLS_BOS_MASK;
769 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
770 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
772 if (tc & ~MPLS_TC_MASK)
774 key_val->mpls_tc = tc;
775 key_mask->mpls_tc = MPLS_TC_MASK;
777 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
778 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
780 if (label & ~MPLS_LABEL_MASK)
782 key_val->mpls_label = label;
783 key_mask->mpls_label = MPLS_LABEL_MASK;
788 static void fl_set_key_vlan(struct nlattr **tb,
790 int vlan_id_key, int vlan_prio_key,
791 struct flow_dissector_key_vlan *key_val,
792 struct flow_dissector_key_vlan *key_mask)
794 #define VLAN_PRIORITY_MASK 0x7
796 if (tb[vlan_id_key]) {
798 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
799 key_mask->vlan_id = VLAN_VID_MASK;
801 if (tb[vlan_prio_key]) {
802 key_val->vlan_priority =
803 nla_get_u8(tb[vlan_prio_key]) &
805 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
807 key_val->vlan_tpid = ethertype;
808 key_mask->vlan_tpid = cpu_to_be16(~0);
811 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
812 u32 *dissector_key, u32 *dissector_mask,
813 u32 flower_flag_bit, u32 dissector_flag_bit)
815 if (flower_mask & flower_flag_bit) {
816 *dissector_mask |= dissector_flag_bit;
817 if (flower_key & flower_flag_bit)
818 *dissector_key |= dissector_flag_bit;
822 static int fl_set_key_flags(struct nlattr **tb,
823 u32 *flags_key, u32 *flags_mask)
827 /* mask is mandatory for flags */
828 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
831 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
832 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
837 fl_set_key_flag(key, mask, flags_key, flags_mask,
838 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
839 fl_set_key_flag(key, mask, flags_key, flags_mask,
840 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
841 FLOW_DIS_FIRST_FRAG);
846 static void fl_set_key_ip(struct nlattr **tb, bool encap,
847 struct flow_dissector_key_ip *key,
848 struct flow_dissector_key_ip *mask)
850 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
851 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
852 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
853 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
855 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
856 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
859 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
860 int depth, int option_len,
861 struct netlink_ext_ack *extack)
863 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
864 struct nlattr *class = NULL, *type = NULL, *data = NULL;
865 struct geneve_opt *opt;
866 int err, data_len = 0;
868 if (option_len > sizeof(struct geneve_opt))
869 data_len = option_len - sizeof(struct geneve_opt);
871 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
872 memset(opt, 0xff, option_len);
873 opt->length = data_len / 4;
878 /* If no mask has been prodived we assume an exact match. */
880 return sizeof(struct geneve_opt) + data_len;
882 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
883 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
887 err = nla_parse_nested_deprecated(tb,
888 TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
889 nla, geneve_opt_policy, extack);
893 /* We are not allowed to omit any of CLASS, TYPE or DATA
894 * fields from the key.
897 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
898 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
899 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
900 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
904 /* Omitting any of CLASS, TYPE or DATA fields is allowed
907 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
908 int new_len = key->enc_opts.len;
910 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
911 data_len = nla_len(data);
913 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
917 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
921 new_len += sizeof(struct geneve_opt) + data_len;
922 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
923 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
924 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
927 opt->length = data_len / 4;
928 memcpy(opt->opt_data, nla_data(data), data_len);
931 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
932 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
933 opt->opt_class = nla_get_be16(class);
936 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
937 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
938 opt->type = nla_get_u8(type);
941 return sizeof(struct geneve_opt) + data_len;
944 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
945 struct fl_flow_key *mask,
946 struct netlink_ext_ack *extack)
948 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
949 int err, option_len, key_depth, msk_depth = 0;
951 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
952 TCA_FLOWER_KEY_ENC_OPTS_MAX,
953 enc_opts_policy, extack);
957 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
959 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
960 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
961 TCA_FLOWER_KEY_ENC_OPTS_MAX,
962 enc_opts_policy, extack);
966 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
967 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
970 nla_for_each_attr(nla_opt_key, nla_enc_key,
971 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
972 switch (nla_type(nla_opt_key)) {
973 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
975 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
976 option_len = fl_set_geneve_opt(nla_opt_key, key,
977 key_depth, option_len,
982 key->enc_opts.len += option_len;
983 /* At the same time we need to parse through the mask
984 * in order to verify exact and mask attribute lengths.
986 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
987 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
988 msk_depth, option_len,
993 mask->enc_opts.len += option_len;
994 if (key->enc_opts.len != mask->enc_opts.len) {
995 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1000 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1003 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1011 static int fl_set_key(struct net *net, struct nlattr **tb,
1012 struct fl_flow_key *key, struct fl_flow_key *mask,
1013 struct netlink_ext_ack *extack)
1017 #ifdef CONFIG_NET_CLS_IND
1018 if (tb[TCA_FLOWER_INDEV]) {
1019 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1022 key->indev_ifindex = err;
1023 mask->indev_ifindex = 0xffffffff;
1027 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1028 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1029 sizeof(key->eth.dst));
1030 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1031 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1032 sizeof(key->eth.src));
1034 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
1035 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1037 if (eth_type_vlan(ethertype)) {
1038 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1039 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1042 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1043 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1044 if (eth_type_vlan(ethertype)) {
1045 fl_set_key_vlan(tb, ethertype,
1046 TCA_FLOWER_KEY_CVLAN_ID,
1047 TCA_FLOWER_KEY_CVLAN_PRIO,
1048 &key->cvlan, &mask->cvlan);
1049 fl_set_key_val(tb, &key->basic.n_proto,
1050 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1051 &mask->basic.n_proto,
1053 sizeof(key->basic.n_proto));
1055 key->basic.n_proto = ethertype;
1056 mask->basic.n_proto = cpu_to_be16(~0);
1060 key->basic.n_proto = ethertype;
1061 mask->basic.n_proto = cpu_to_be16(~0);
1065 if (key->basic.n_proto == htons(ETH_P_IP) ||
1066 key->basic.n_proto == htons(ETH_P_IPV6)) {
1067 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1068 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1069 sizeof(key->basic.ip_proto));
1070 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1073 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1074 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1075 mask->control.addr_type = ~0;
1076 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1077 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1078 sizeof(key->ipv4.src));
1079 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1080 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1081 sizeof(key->ipv4.dst));
1082 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1083 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1084 mask->control.addr_type = ~0;
1085 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1086 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1087 sizeof(key->ipv6.src));
1088 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1089 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1090 sizeof(key->ipv6.dst));
1093 if (key->basic.ip_proto == IPPROTO_TCP) {
1094 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1095 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1096 sizeof(key->tp.src));
1097 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1098 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1099 sizeof(key->tp.dst));
1100 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1101 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1102 sizeof(key->tcp.flags));
1103 } else if (key->basic.ip_proto == IPPROTO_UDP) {
1104 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1105 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1106 sizeof(key->tp.src));
1107 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1108 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1109 sizeof(key->tp.dst));
1110 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1111 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1112 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1113 sizeof(key->tp.src));
1114 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1115 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1116 sizeof(key->tp.dst));
1117 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1118 key->basic.ip_proto == IPPROTO_ICMP) {
1119 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1121 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1122 sizeof(key->icmp.type));
1123 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1125 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1126 sizeof(key->icmp.code));
1127 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1128 key->basic.ip_proto == IPPROTO_ICMPV6) {
1129 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1131 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1132 sizeof(key->icmp.type));
1133 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1135 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1136 sizeof(key->icmp.code));
1137 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1138 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1139 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1142 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1143 key->basic.n_proto == htons(ETH_P_RARP)) {
1144 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1145 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1146 sizeof(key->arp.sip));
1147 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1148 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1149 sizeof(key->arp.tip));
1150 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1151 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1152 sizeof(key->arp.op));
1153 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1154 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1155 sizeof(key->arp.sha));
1156 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1157 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1158 sizeof(key->arp.tha));
1161 if (key->basic.ip_proto == IPPROTO_TCP ||
1162 key->basic.ip_proto == IPPROTO_UDP ||
1163 key->basic.ip_proto == IPPROTO_SCTP) {
1164 ret = fl_set_key_port_range(tb, key, mask);
1169 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1170 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1171 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1172 mask->enc_control.addr_type = ~0;
1173 fl_set_key_val(tb, &key->enc_ipv4.src,
1174 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1175 &mask->enc_ipv4.src,
1176 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1177 sizeof(key->enc_ipv4.src));
1178 fl_set_key_val(tb, &key->enc_ipv4.dst,
1179 TCA_FLOWER_KEY_ENC_IPV4_DST,
1180 &mask->enc_ipv4.dst,
1181 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1182 sizeof(key->enc_ipv4.dst));
1185 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1186 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1187 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1188 mask->enc_control.addr_type = ~0;
1189 fl_set_key_val(tb, &key->enc_ipv6.src,
1190 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1191 &mask->enc_ipv6.src,
1192 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1193 sizeof(key->enc_ipv6.src));
1194 fl_set_key_val(tb, &key->enc_ipv6.dst,
1195 TCA_FLOWER_KEY_ENC_IPV6_DST,
1196 &mask->enc_ipv6.dst,
1197 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1198 sizeof(key->enc_ipv6.dst));
1201 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1202 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1203 sizeof(key->enc_key_id.keyid));
1205 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1206 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1207 sizeof(key->enc_tp.src));
1209 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1210 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1211 sizeof(key->enc_tp.dst));
1213 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1215 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1216 ret = fl_set_enc_opt(tb, key, mask, extack);
1221 if (tb[TCA_FLOWER_KEY_FLAGS])
1222 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
1227 static void fl_mask_copy(struct fl_flow_mask *dst,
1228 struct fl_flow_mask *src)
1230 const void *psrc = fl_key_get_start(&src->key, src);
1231 void *pdst = fl_key_get_start(&dst->key, src);
1233 memcpy(pdst, psrc, fl_mask_range(src));
1234 dst->range = src->range;
1237 static const struct rhashtable_params fl_ht_params = {
1238 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1239 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1240 .automatic_shrinking = true,
1243 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1245 mask->filter_ht_params = fl_ht_params;
1246 mask->filter_ht_params.key_len = fl_mask_range(mask);
1247 mask->filter_ht_params.key_offset += mask->range.start;
1249 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1252 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1253 #define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
1255 #define FL_KEY_IS_MASKED(mask, member) \
1256 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1257 0, FL_KEY_MEMBER_SIZE(member)) \
1259 #define FL_KEY_SET(keys, cnt, id, member) \
1261 keys[cnt].key_id = id; \
1262 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1266 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1268 if (FL_KEY_IS_MASKED(mask, member)) \
1269 FL_KEY_SET(keys, cnt, id, member); \
1272 static void fl_init_dissector(struct flow_dissector *dissector,
1273 struct fl_flow_key *mask)
1275 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1278 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1279 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1280 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1281 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1282 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1283 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1284 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1285 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1286 if (FL_KEY_IS_MASKED(mask, tp) ||
1287 FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1288 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
1289 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1290 FLOW_DISSECTOR_KEY_IP, ip);
1291 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1292 FLOW_DISSECTOR_KEY_TCP, tcp);
1293 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1294 FLOW_DISSECTOR_KEY_ICMP, icmp);
1295 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1296 FLOW_DISSECTOR_KEY_ARP, arp);
1297 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1298 FLOW_DISSECTOR_KEY_MPLS, mpls);
1299 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1300 FLOW_DISSECTOR_KEY_VLAN, vlan);
1301 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1302 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1303 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1304 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1305 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1306 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1307 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1308 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1309 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1310 FL_KEY_IS_MASKED(mask, enc_ipv6))
1311 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1313 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1314 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1315 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1316 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1317 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1318 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1320 skb_flow_dissector_init(dissector, keys, cnt);
1323 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1324 struct fl_flow_mask *mask)
1326 struct fl_flow_mask *newmask;
1329 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1331 return ERR_PTR(-ENOMEM);
1333 fl_mask_copy(newmask, mask);
1335 if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1336 (newmask->key.tp_min.src && newmask->key.tp_max.src))
1337 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1339 err = fl_init_mask_hashtable(newmask);
1343 fl_init_dissector(&newmask->dissector, &newmask->key);
1345 INIT_LIST_HEAD_RCU(&newmask->filters);
1347 refcount_set(&newmask->refcnt, 1);
1348 err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1349 &newmask->ht_node, mask_ht_params);
1351 goto errout_destroy;
1353 /* Wait until any potential concurrent users of mask are finished */
1356 spin_lock(&head->masks_lock);
1357 list_add_tail_rcu(&newmask->list, &head->masks);
1358 spin_unlock(&head->masks_lock);
1363 rhashtable_destroy(&newmask->ht);
1367 return ERR_PTR(err);
1370 static int fl_check_assign_mask(struct cls_fl_head *head,
1371 struct cls_fl_filter *fnew,
1372 struct cls_fl_filter *fold,
1373 struct fl_flow_mask *mask)
1375 struct fl_flow_mask *newmask;
1380 /* Insert mask as temporary node to prevent concurrent creation of mask
1381 * with same key. Any concurrent lookups with same key will return
1382 * -EAGAIN because mask's refcnt is zero. It is safe to insert
1383 * stack-allocated 'mask' to masks hash table because we call
1384 * synchronize_rcu() before returning from this function (either in case
1385 * of error or after replacing it with heap-allocated mask in
1386 * fl_create_new_mask()).
1388 fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1396 goto errout_cleanup;
1399 newmask = fl_create_new_mask(head, mask);
1400 if (IS_ERR(newmask)) {
1401 ret = PTR_ERR(newmask);
1402 goto errout_cleanup;
1405 fnew->mask = newmask;
1407 } else if (IS_ERR(fnew->mask)) {
1408 ret = PTR_ERR(fnew->mask);
1409 } else if (fold && fold->mask != fnew->mask) {
1411 } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1412 /* Mask was deleted concurrently, try again */
1419 rhashtable_remove_fast(&head->ht, &mask->ht_node,
1421 /* Wait until any potential concurrent users of mask are finished */
1426 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1427 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1428 unsigned long base, struct nlattr **tb,
1429 struct nlattr *est, bool ovr,
1430 struct fl_flow_tmplt *tmplt, bool rtnl_held,
1431 struct netlink_ext_ack *extack)
1435 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
1440 if (tb[TCA_FLOWER_CLASSID]) {
1441 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1444 tcf_bind_filter(tp, &f->res, base);
1449 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1453 fl_mask_update_range(mask);
1454 fl_set_masked_key(&f->mkey, &f->key, mask);
1456 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1457 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1464 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1465 struct cls_fl_filter *fold,
1468 struct fl_flow_mask *mask = fnew->mask;
1471 err = rhashtable_lookup_insert_fast(&mask->ht,
1473 mask->filter_ht_params);
1476 /* It is okay if filter with same key exists when
1479 return fold && err == -EEXIST ? 0 : err;
1486 static int fl_change(struct net *net, struct sk_buff *in_skb,
1487 struct tcf_proto *tp, unsigned long base,
1488 u32 handle, struct nlattr **tca,
1489 void **arg, bool ovr, bool rtnl_held,
1490 struct netlink_ext_ack *extack)
1492 struct cls_fl_head *head = fl_head_dereference(tp);
1493 struct cls_fl_filter *fold = *arg;
1494 struct cls_fl_filter *fnew;
1495 struct fl_flow_mask *mask;
1500 if (!tca[TCA_OPTIONS]) {
1505 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
1511 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1514 goto errout_mask_alloc;
1517 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1518 tca[TCA_OPTIONS], fl_policy, NULL);
1522 if (fold && handle && fold->handle != handle) {
1527 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1532 INIT_LIST_HEAD(&fnew->hw_list);
1533 refcount_set(&fnew->refcnt, 1);
1535 err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
1539 if (tb[TCA_FLOWER_FLAGS]) {
1540 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1542 if (!tc_flags_valid(fnew->flags)) {
1548 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
1549 tp->chain->tmplt_priv, rtnl_held, extack);
1553 err = fl_check_assign_mask(head, fnew, fold, mask);
1557 err = fl_ht_insert_unique(fnew, fold, &in_ht);
1561 if (!tc_skip_hw(fnew->flags)) {
1562 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
1567 if (!tc_in_hw(fnew->flags))
1568 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1570 spin_lock(&tp->lock);
1572 /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
1573 * proto again or create new one, if necessary.
1581 /* Fold filter was deleted concurrently. Retry lookup. */
1582 if (fold->deleted) {
1587 fnew->handle = handle;
1590 struct rhashtable_params params =
1591 fnew->mask->filter_ht_params;
1593 err = rhashtable_insert_fast(&fnew->mask->ht,
1601 refcount_inc(&fnew->refcnt);
1602 rhashtable_remove_fast(&fold->mask->ht,
1604 fold->mask->filter_ht_params);
1605 idr_replace(&head->handle_idr, fnew, fnew->handle);
1606 list_replace_rcu(&fold->list, &fnew->list);
1607 fold->deleted = true;
1609 spin_unlock(&tp->lock);
1611 fl_mask_put(head, fold->mask);
1612 if (!tc_skip_hw(fold->flags))
1613 fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
1614 tcf_unbind_filter(tp, &fold->res);
1615 /* Caller holds reference to fold, so refcnt is always > 0
1618 refcount_dec(&fold->refcnt);
1622 /* user specifies a handle and it doesn't exist */
1623 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1624 handle, GFP_ATOMIC);
1626 /* Filter with specified handle was concurrently
1627 * inserted after initial check in cls_api. This is not
1628 * necessarily an error if NLM_F_EXCL is not set in
1629 * message flags. Returning EAGAIN will cause cls_api to
1630 * try to update concurrently inserted rule.
1636 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1637 INT_MAX, GFP_ATOMIC);
1642 refcount_inc(&fnew->refcnt);
1643 fnew->handle = handle;
1644 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
1645 spin_unlock(&tp->lock);
1655 spin_lock(&tp->lock);
1657 fnew->deleted = true;
1658 spin_unlock(&tp->lock);
1659 if (!tc_skip_hw(fnew->flags))
1660 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1662 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1663 fnew->mask->filter_ht_params);
1665 fl_mask_put(head, fnew->mask);
1678 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
1679 bool rtnl_held, struct netlink_ext_ack *extack)
1681 struct cls_fl_head *head = fl_head_dereference(tp);
1682 struct cls_fl_filter *f = arg;
1686 err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
1687 *last = list_empty(&head->masks);
1693 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
1696 struct cls_fl_filter *f;
1698 arg->count = arg->skip;
1700 while ((f = fl_get_next_filter(tp, &arg->cookie)) != NULL) {
1701 if (arg->fn(tp, f, arg) < 0) {
1712 static struct cls_fl_filter *
1713 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
1715 struct cls_fl_head *head = fl_head_dereference(tp);
1717 spin_lock(&tp->lock);
1718 if (list_empty(&head->hw_filters)) {
1719 spin_unlock(&tp->lock);
1724 f = list_entry(&head->hw_filters, struct cls_fl_filter,
1726 list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
1727 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
1728 spin_unlock(&tp->lock);
1733 spin_unlock(&tp->lock);
1737 static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
1738 void *cb_priv, struct netlink_ext_ack *extack)
1740 struct tc_cls_flower_offload cls_flower = {};
1741 struct tcf_block *block = tp->chain->block;
1742 struct cls_fl_filter *f = NULL;
1745 /* hw_filters list can only be changed by hw offload functions after
1746 * obtaining rtnl lock. Make sure it is not changed while reoffload is
1751 while ((f = fl_get_next_hw_filter(tp, f, add))) {
1753 flow_rule_alloc(tcf_exts_num_actions(&f->exts));
1754 if (!cls_flower.rule) {
1759 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
1761 cls_flower.command = add ?
1762 TC_CLSFLOWER_REPLACE : TC_CLSFLOWER_DESTROY;
1763 cls_flower.cookie = (unsigned long)f;
1764 cls_flower.rule->match.dissector = &f->mask->dissector;
1765 cls_flower.rule->match.mask = &f->mask->key;
1766 cls_flower.rule->match.key = &f->mkey;
1768 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);
1770 kfree(cls_flower.rule);
1771 if (tc_skip_sw(f->flags)) {
1772 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
1779 cls_flower.classid = f->res.classid;
1781 err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
1782 kfree(cls_flower.rule);
1785 if (add && tc_skip_sw(f->flags)) {
1792 spin_lock(&tp->lock);
1793 tc_cls_offload_cnt_update(block, &f->in_hw_count, &f->flags,
1795 spin_unlock(&tp->lock);
1803 static int fl_hw_create_tmplt(struct tcf_chain *chain,
1804 struct fl_flow_tmplt *tmplt)
1806 struct tc_cls_flower_offload cls_flower = {};
1807 struct tcf_block *block = chain->block;
1809 cls_flower.rule = flow_rule_alloc(0);
1810 if (!cls_flower.rule)
1813 cls_flower.common.chain_index = chain->index;
1814 cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE;
1815 cls_flower.cookie = (unsigned long) tmplt;
1816 cls_flower.rule->match.dissector = &tmplt->dissector;
1817 cls_flower.rule->match.mask = &tmplt->mask;
1818 cls_flower.rule->match.key = &tmplt->dummy_key;
1820 /* We don't care if driver (any of them) fails to handle this
1821 * call. It serves just as a hint for it.
1823 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
1824 kfree(cls_flower.rule);
1829 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
1830 struct fl_flow_tmplt *tmplt)
1832 struct tc_cls_flower_offload cls_flower = {};
1833 struct tcf_block *block = chain->block;
1835 cls_flower.common.chain_index = chain->index;
1836 cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY;
1837 cls_flower.cookie = (unsigned long) tmplt;
1839 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
1842 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
1843 struct nlattr **tca,
1844 struct netlink_ext_ack *extack)
1846 struct fl_flow_tmplt *tmplt;
1850 if (!tca[TCA_OPTIONS])
1851 return ERR_PTR(-EINVAL);
1853 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1855 return ERR_PTR(-ENOBUFS);
1856 err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1857 tca[TCA_OPTIONS], fl_policy, NULL);
1861 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1866 tmplt->chain = chain;
1867 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
1871 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
1873 err = fl_hw_create_tmplt(chain, tmplt);
1884 return ERR_PTR(err);
1887 static void fl_tmplt_destroy(void *tmplt_priv)
1889 struct fl_flow_tmplt *tmplt = tmplt_priv;
1891 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
1895 static int fl_dump_key_val(struct sk_buff *skb,
1896 void *val, int val_type,
1897 void *mask, int mask_type, int len)
1901 if (!memchr_inv(mask, 0, len))
1903 err = nla_put(skb, val_type, len, val);
1906 if (mask_type != TCA_FLOWER_UNSPEC) {
1907 err = nla_put(skb, mask_type, len, mask);
1914 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
1915 struct fl_flow_key *mask)
1917 if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
1918 &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
1919 sizeof(key->tp_min.dst)) ||
1920 fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
1921 &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
1922 sizeof(key->tp_max.dst)) ||
1923 fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
1924 &mask->tp_min.src, TCA_FLOWER_UNSPEC,
1925 sizeof(key->tp_min.src)) ||
1926 fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
1927 &mask->tp_max.src, TCA_FLOWER_UNSPEC,
1928 sizeof(key->tp_max.src)))
1934 static int fl_dump_key_mpls(struct sk_buff *skb,
1935 struct flow_dissector_key_mpls *mpls_key,
1936 struct flow_dissector_key_mpls *mpls_mask)
1940 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1942 if (mpls_mask->mpls_ttl) {
1943 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
1944 mpls_key->mpls_ttl);
1948 if (mpls_mask->mpls_tc) {
1949 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
1954 if (mpls_mask->mpls_label) {
1955 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
1956 mpls_key->mpls_label);
1960 if (mpls_mask->mpls_bos) {
1961 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
1962 mpls_key->mpls_bos);
1969 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
1970 struct flow_dissector_key_ip *key,
1971 struct flow_dissector_key_ip *mask)
1973 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1974 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1975 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1976 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1978 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
1979 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
1985 static int fl_dump_key_vlan(struct sk_buff *skb,
1986 int vlan_id_key, int vlan_prio_key,
1987 struct flow_dissector_key_vlan *vlan_key,
1988 struct flow_dissector_key_vlan *vlan_mask)
1992 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
1994 if (vlan_mask->vlan_id) {
1995 err = nla_put_u16(skb, vlan_id_key,
2000 if (vlan_mask->vlan_priority) {
2001 err = nla_put_u8(skb, vlan_prio_key,
2002 vlan_key->vlan_priority);
2009 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2010 u32 *flower_key, u32 *flower_mask,
2011 u32 flower_flag_bit, u32 dissector_flag_bit)
2013 if (dissector_mask & dissector_flag_bit) {
2014 *flower_mask |= flower_flag_bit;
2015 if (dissector_key & dissector_flag_bit)
2016 *flower_key |= flower_flag_bit;
2020 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2026 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2032 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2033 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2034 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2035 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2036 FLOW_DIS_FIRST_FRAG);
2038 _key = cpu_to_be32(key);
2039 _mask = cpu_to_be32(mask);
2041 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2045 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2048 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2049 struct flow_dissector_key_enc_opts *enc_opts)
2051 struct geneve_opt *opt;
2052 struct nlattr *nest;
2055 nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2057 goto nla_put_failure;
2059 while (enc_opts->len > opt_off) {
2060 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2062 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2064 goto nla_put_failure;
2065 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2067 goto nla_put_failure;
2068 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2069 opt->length * 4, opt->opt_data))
2070 goto nla_put_failure;
2072 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2074 nla_nest_end(skb, nest);
2078 nla_nest_cancel(skb, nest);
2082 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2083 struct flow_dissector_key_enc_opts *enc_opts)
2085 struct nlattr *nest;
2091 nest = nla_nest_start_noflag(skb, enc_opt_type);
2093 goto nla_put_failure;
2095 switch (enc_opts->dst_opt_type) {
2096 case TUNNEL_GENEVE_OPT:
2097 err = fl_dump_key_geneve_opt(skb, enc_opts);
2099 goto nla_put_failure;
2102 goto nla_put_failure;
2104 nla_nest_end(skb, nest);
2108 nla_nest_cancel(skb, nest);
2112 static int fl_dump_key_enc_opt(struct sk_buff *skb,
2113 struct flow_dissector_key_enc_opts *key_opts,
2114 struct flow_dissector_key_enc_opts *msk_opts)
2118 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2122 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2125 static int fl_dump_key(struct sk_buff *skb, struct net *net,
2126 struct fl_flow_key *key, struct fl_flow_key *mask)
2128 if (mask->indev_ifindex) {
2129 struct net_device *dev;
2131 dev = __dev_get_by_index(net, key->indev_ifindex);
2132 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2133 goto nla_put_failure;
2136 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2137 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2138 sizeof(key->eth.dst)) ||
2139 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2140 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2141 sizeof(key->eth.src)) ||
2142 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2143 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2144 sizeof(key->basic.n_proto)))
2145 goto nla_put_failure;
2147 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2148 goto nla_put_failure;
2150 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2151 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
2152 goto nla_put_failure;
2154 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2155 TCA_FLOWER_KEY_CVLAN_PRIO,
2156 &key->cvlan, &mask->cvlan) ||
2157 (mask->cvlan.vlan_tpid &&
2158 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2159 key->cvlan.vlan_tpid)))
2160 goto nla_put_failure;
2162 if (mask->basic.n_proto) {
2163 if (mask->cvlan.vlan_tpid) {
2164 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2165 key->basic.n_proto))
2166 goto nla_put_failure;
2167 } else if (mask->vlan.vlan_tpid) {
2168 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2169 key->basic.n_proto))
2170 goto nla_put_failure;
2174 if ((key->basic.n_proto == htons(ETH_P_IP) ||
2175 key->basic.n_proto == htons(ETH_P_IPV6)) &&
2176 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
2177 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
2178 sizeof(key->basic.ip_proto)) ||
2179 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
2180 goto nla_put_failure;
2182 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2183 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2184 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2185 sizeof(key->ipv4.src)) ||
2186 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2187 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2188 sizeof(key->ipv4.dst))))
2189 goto nla_put_failure;
2190 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2191 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2192 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2193 sizeof(key->ipv6.src)) ||
2194 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2195 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2196 sizeof(key->ipv6.dst))))
2197 goto nla_put_failure;
2199 if (key->basic.ip_proto == IPPROTO_TCP &&
2200 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
2201 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
2202 sizeof(key->tp.src)) ||
2203 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
2204 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
2205 sizeof(key->tp.dst)) ||
2206 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2207 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2208 sizeof(key->tcp.flags))))
2209 goto nla_put_failure;
2210 else if (key->basic.ip_proto == IPPROTO_UDP &&
2211 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
2212 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
2213 sizeof(key->tp.src)) ||
2214 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
2215 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
2216 sizeof(key->tp.dst))))
2217 goto nla_put_failure;
2218 else if (key->basic.ip_proto == IPPROTO_SCTP &&
2219 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2220 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2221 sizeof(key->tp.src)) ||
2222 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2223 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
2224 sizeof(key->tp.dst))))
2225 goto nla_put_failure;
2226 else if (key->basic.n_proto == htons(ETH_P_IP) &&
2227 key->basic.ip_proto == IPPROTO_ICMP &&
2228 (fl_dump_key_val(skb, &key->icmp.type,
2229 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2230 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2231 sizeof(key->icmp.type)) ||
2232 fl_dump_key_val(skb, &key->icmp.code,
2233 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2234 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2235 sizeof(key->icmp.code))))
2236 goto nla_put_failure;
2237 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2238 key->basic.ip_proto == IPPROTO_ICMPV6 &&
2239 (fl_dump_key_val(skb, &key->icmp.type,
2240 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2241 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2242 sizeof(key->icmp.type)) ||
2243 fl_dump_key_val(skb, &key->icmp.code,
2244 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2245 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2246 sizeof(key->icmp.code))))
2247 goto nla_put_failure;
2248 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2249 key->basic.n_proto == htons(ETH_P_RARP)) &&
2250 (fl_dump_key_val(skb, &key->arp.sip,
2251 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2252 TCA_FLOWER_KEY_ARP_SIP_MASK,
2253 sizeof(key->arp.sip)) ||
2254 fl_dump_key_val(skb, &key->arp.tip,
2255 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2256 TCA_FLOWER_KEY_ARP_TIP_MASK,
2257 sizeof(key->arp.tip)) ||
2258 fl_dump_key_val(skb, &key->arp.op,
2259 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2260 TCA_FLOWER_KEY_ARP_OP_MASK,
2261 sizeof(key->arp.op)) ||
2262 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2263 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2264 sizeof(key->arp.sha)) ||
2265 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2266 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2267 sizeof(key->arp.tha))))
2268 goto nla_put_failure;
2270 if ((key->basic.ip_proto == IPPROTO_TCP ||
2271 key->basic.ip_proto == IPPROTO_UDP ||
2272 key->basic.ip_proto == IPPROTO_SCTP) &&
2273 fl_dump_key_port_range(skb, key, mask))
2274 goto nla_put_failure;
2276 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2277 (fl_dump_key_val(skb, &key->enc_ipv4.src,
2278 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2279 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2280 sizeof(key->enc_ipv4.src)) ||
2281 fl_dump_key_val(skb, &key->enc_ipv4.dst,
2282 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2283 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2284 sizeof(key->enc_ipv4.dst))))
2285 goto nla_put_failure;
2286 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2287 (fl_dump_key_val(skb, &key->enc_ipv6.src,
2288 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2289 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2290 sizeof(key->enc_ipv6.src)) ||
2291 fl_dump_key_val(skb, &key->enc_ipv6.dst,
2292 TCA_FLOWER_KEY_ENC_IPV6_DST,
2293 &mask->enc_ipv6.dst,
2294 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2295 sizeof(key->enc_ipv6.dst))))
2296 goto nla_put_failure;
2298 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
2299 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
2300 sizeof(key->enc_key_id)) ||
2301 fl_dump_key_val(skb, &key->enc_tp.src,
2302 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2304 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2305 sizeof(key->enc_tp.src)) ||
2306 fl_dump_key_val(skb, &key->enc_tp.dst,
2307 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2309 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
2310 sizeof(key->enc_tp.dst)) ||
2311 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2312 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
2313 goto nla_put_failure;
2315 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2316 goto nla_put_failure;
2324 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2325 struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
2327 struct cls_fl_filter *f = fh;
2328 struct nlattr *nest;
2329 struct fl_flow_key *key, *mask;
2335 t->tcm_handle = f->handle;
2337 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2339 goto nla_put_failure;
2341 spin_lock(&tp->lock);
2343 if (f->res.classid &&
2344 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
2345 goto nla_put_failure_locked;
2348 mask = &f->mask->key;
2349 skip_hw = tc_skip_hw(f->flags);
2351 if (fl_dump_key(skb, net, key, mask))
2352 goto nla_put_failure_locked;
2354 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
2355 goto nla_put_failure_locked;
2357 spin_unlock(&tp->lock);
2360 fl_hw_update_stats(tp, f, rtnl_held);
2362 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2363 goto nla_put_failure;
2365 if (tcf_exts_dump(skb, &f->exts))
2366 goto nla_put_failure;
2368 nla_nest_end(skb, nest);
2370 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2371 goto nla_put_failure;
2375 nla_put_failure_locked:
2376 spin_unlock(&tp->lock);
2378 nla_nest_cancel(skb, nest);
2382 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2384 struct fl_flow_tmplt *tmplt = tmplt_priv;
2385 struct fl_flow_key *key, *mask;
2386 struct nlattr *nest;
2388 nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2390 goto nla_put_failure;
2392 key = &tmplt->dummy_key;
2393 mask = &tmplt->mask;
2395 if (fl_dump_key(skb, net, key, mask))
2396 goto nla_put_failure;
2398 nla_nest_end(skb, nest);
2403 nla_nest_cancel(skb, nest);
2407 static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2409 struct cls_fl_filter *f = fh;
2411 if (f && f->res.classid == classid)
2415 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2417 .classify = fl_classify,
2419 .destroy = fl_destroy,
2422 .change = fl_change,
2423 .delete = fl_delete,
2425 .reoffload = fl_reoffload,
2427 .bind_class = fl_bind_class,
2428 .tmplt_create = fl_tmplt_create,
2429 .tmplt_destroy = fl_tmplt_destroy,
2430 .tmplt_dump = fl_tmplt_dump,
2431 .owner = THIS_MODULE,
2432 .flags = TCF_PROTO_OPS_DOIT_UNLOCKED,
2435 static int __init cls_fl_init(void)
2437 return register_tcf_proto_ops(&cls_fl_ops);
2440 static void __exit cls_fl_exit(void)
2442 unregister_tcf_proto_ops(&cls_fl_ops);
2445 module_init(cls_fl_init);
2446 module_exit(cls_fl_exit);
2448 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2449 MODULE_DESCRIPTION("Flower classifier");
2450 MODULE_LICENSE("GPL v2");