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>
18 #include <linux/if_ether.h>
19 #include <linux/in6.h>
21 #include <linux/mpls.h>
23 #include <net/sch_generic.h>
24 #include <net/pkt_cls.h>
26 #include <net/flow_dissector.h>
27 #include <net/geneve.h>
30 #include <net/dst_metadata.h>
34 struct flow_dissector_key_control control;
35 struct flow_dissector_key_control enc_control;
36 struct flow_dissector_key_basic basic;
37 struct flow_dissector_key_eth_addrs eth;
38 struct flow_dissector_key_vlan vlan;
39 struct flow_dissector_key_vlan cvlan;
41 struct flow_dissector_key_ipv4_addrs ipv4;
42 struct flow_dissector_key_ipv6_addrs ipv6;
44 struct flow_dissector_key_ports tp;
45 struct flow_dissector_key_icmp icmp;
46 struct flow_dissector_key_arp arp;
47 struct flow_dissector_key_keyid enc_key_id;
49 struct flow_dissector_key_ipv4_addrs enc_ipv4;
50 struct flow_dissector_key_ipv6_addrs enc_ipv6;
52 struct flow_dissector_key_ports enc_tp;
53 struct flow_dissector_key_mpls mpls;
54 struct flow_dissector_key_tcp tcp;
55 struct flow_dissector_key_ip ip;
56 struct flow_dissector_key_ip enc_ip;
57 struct flow_dissector_key_enc_opts enc_opts;
58 struct flow_dissector_key_ports tp_min;
59 struct flow_dissector_key_ports tp_max;
60 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
62 struct fl_flow_mask_range {
63 unsigned short int start;
64 unsigned short int end;
68 struct fl_flow_key key;
69 struct fl_flow_mask_range range;
71 struct rhash_head ht_node;
73 struct rhashtable_params filter_ht_params;
74 struct flow_dissector dissector;
75 struct list_head filters;
76 struct rcu_work rwork;
77 struct list_head list;
80 struct fl_flow_tmplt {
81 struct fl_flow_key dummy_key;
82 struct fl_flow_key mask;
83 struct flow_dissector dissector;
84 struct tcf_chain *chain;
89 struct list_head masks;
90 struct rcu_work rwork;
91 struct idr handle_idr;
94 struct cls_fl_filter {
95 struct fl_flow_mask *mask;
96 struct rhash_head ht_node;
97 struct fl_flow_key mkey;
99 struct tcf_result res;
100 struct fl_flow_key key;
101 struct list_head list;
105 struct rcu_work rwork;
106 struct net_device *hw_dev;
109 static const struct rhashtable_params mask_ht_params = {
110 .key_offset = offsetof(struct fl_flow_mask, key),
111 .key_len = sizeof(struct fl_flow_key),
112 .head_offset = offsetof(struct fl_flow_mask, ht_node),
113 .automatic_shrinking = true,
116 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
118 return mask->range.end - mask->range.start;
121 static void fl_mask_update_range(struct fl_flow_mask *mask)
123 const u8 *bytes = (const u8 *) &mask->key;
124 size_t size = sizeof(mask->key);
125 size_t i, first = 0, last;
127 for (i = 0; i < size; i++) {
134 for (i = size - 1; i != first; i--) {
140 mask->range.start = rounddown(first, sizeof(long));
141 mask->range.end = roundup(last + 1, sizeof(long));
144 static void *fl_key_get_start(struct fl_flow_key *key,
145 const struct fl_flow_mask *mask)
147 return (u8 *) key + mask->range.start;
150 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
151 struct fl_flow_mask *mask)
153 const long *lkey = fl_key_get_start(key, mask);
154 const long *lmask = fl_key_get_start(&mask->key, mask);
155 long *lmkey = fl_key_get_start(mkey, mask);
158 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
159 *lmkey++ = *lkey++ & *lmask++;
162 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
163 struct fl_flow_mask *mask)
165 const long *lmask = fl_key_get_start(&mask->key, mask);
171 ltmplt = fl_key_get_start(&tmplt->mask, mask);
172 for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
173 if (~*ltmplt++ & *lmask++)
179 static void fl_clear_masked_range(struct fl_flow_key *key,
180 struct fl_flow_mask *mask)
182 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
185 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
186 struct fl_flow_key *key,
187 struct fl_flow_key *mkey)
189 __be16 min_mask, max_mask, min_val, max_val;
191 min_mask = htons(filter->mask->key.tp_min.dst);
192 max_mask = htons(filter->mask->key.tp_max.dst);
193 min_val = htons(filter->key.tp_min.dst);
194 max_val = htons(filter->key.tp_max.dst);
196 if (min_mask && max_mask) {
197 if (htons(key->tp.dst) < min_val ||
198 htons(key->tp.dst) > max_val)
201 /* skb does not have min and max values */
202 mkey->tp_min.dst = filter->mkey.tp_min.dst;
203 mkey->tp_max.dst = filter->mkey.tp_max.dst;
208 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
209 struct fl_flow_key *key,
210 struct fl_flow_key *mkey)
212 __be16 min_mask, max_mask, min_val, max_val;
214 min_mask = htons(filter->mask->key.tp_min.src);
215 max_mask = htons(filter->mask->key.tp_max.src);
216 min_val = htons(filter->key.tp_min.src);
217 max_val = htons(filter->key.tp_max.src);
219 if (min_mask && max_mask) {
220 if (htons(key->tp.src) < min_val ||
221 htons(key->tp.src) > max_val)
224 /* skb does not have min and max values */
225 mkey->tp_min.src = filter->mkey.tp_min.src;
226 mkey->tp_max.src = filter->mkey.tp_max.src;
231 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
232 struct fl_flow_key *mkey)
234 return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
235 mask->filter_ht_params);
238 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
239 struct fl_flow_key *mkey,
240 struct fl_flow_key *key)
242 struct cls_fl_filter *filter, *f;
244 list_for_each_entry_rcu(filter, &mask->filters, list) {
245 if (!fl_range_port_dst_cmp(filter, key, mkey))
248 if (!fl_range_port_src_cmp(filter, key, mkey))
251 f = __fl_lookup(mask, mkey);
258 static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
259 struct fl_flow_key *mkey,
260 struct fl_flow_key *key)
262 if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
263 return fl_lookup_range(mask, mkey, key);
265 return __fl_lookup(mask, mkey);
268 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
269 struct tcf_result *res)
271 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
272 struct cls_fl_filter *f;
273 struct fl_flow_mask *mask;
274 struct fl_flow_key skb_key;
275 struct fl_flow_key skb_mkey;
277 list_for_each_entry_rcu(mask, &head->masks, list) {
278 fl_clear_masked_range(&skb_key, mask);
280 skb_key.indev_ifindex = skb->skb_iif;
281 /* skb_flow_dissect() does not set n_proto in case an unknown
282 * protocol, so do it rather here.
284 skb_key.basic.n_proto = skb->protocol;
285 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
286 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
288 fl_set_masked_key(&skb_mkey, &skb_key, mask);
290 f = fl_lookup(mask, &skb_mkey, &skb_key);
291 if (f && !tc_skip_sw(f->flags)) {
293 return tcf_exts_exec(skb, &f->exts, res);
299 static int fl_init(struct tcf_proto *tp)
301 struct cls_fl_head *head;
303 head = kzalloc(sizeof(*head), GFP_KERNEL);
307 INIT_LIST_HEAD_RCU(&head->masks);
308 rcu_assign_pointer(tp->root, head);
309 idr_init(&head->handle_idr);
311 return rhashtable_init(&head->ht, &mask_ht_params);
314 static void fl_mask_free(struct fl_flow_mask *mask)
316 rhashtable_destroy(&mask->ht);
320 static void fl_mask_free_work(struct work_struct *work)
322 struct fl_flow_mask *mask = container_of(to_rcu_work(work),
323 struct fl_flow_mask, rwork);
328 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask,
331 if (!list_empty(&mask->filters))
334 rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
335 list_del_rcu(&mask->list);
337 tcf_queue_work(&mask->rwork, fl_mask_free_work);
344 static void __fl_destroy_filter(struct cls_fl_filter *f)
346 tcf_exts_destroy(&f->exts);
347 tcf_exts_put_net(&f->exts);
351 static void fl_destroy_filter_work(struct work_struct *work)
353 struct cls_fl_filter *f = container_of(to_rcu_work(work),
354 struct cls_fl_filter, rwork);
357 __fl_destroy_filter(f);
361 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
362 struct netlink_ext_ack *extack)
364 struct tc_cls_flower_offload cls_flower = {};
365 struct tcf_block *block = tp->chain->block;
367 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
368 cls_flower.command = TC_CLSFLOWER_DESTROY;
369 cls_flower.cookie = (unsigned long) f;
371 tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
373 tcf_block_offload_dec(block, &f->flags);
376 static int fl_hw_replace_filter(struct tcf_proto *tp,
377 struct cls_fl_filter *f,
378 struct netlink_ext_ack *extack)
380 struct tc_cls_flower_offload cls_flower = {};
381 struct tcf_block *block = tp->chain->block;
382 bool skip_sw = tc_skip_sw(f->flags);
385 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
386 cls_flower.command = TC_CLSFLOWER_REPLACE;
387 cls_flower.cookie = (unsigned long) f;
388 cls_flower.dissector = &f->mask->dissector;
389 cls_flower.mask = &f->mask->key;
390 cls_flower.key = &f->mkey;
391 cls_flower.exts = &f->exts;
392 cls_flower.classid = f->res.classid;
394 err = tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
395 &cls_flower, skip_sw);
397 fl_hw_destroy_filter(tp, f, NULL);
399 } else if (err > 0) {
400 f->in_hw_count = err;
401 tcf_block_offload_inc(block, &f->flags);
404 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
410 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
412 struct tc_cls_flower_offload cls_flower = {};
413 struct tcf_block *block = tp->chain->block;
415 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
416 cls_flower.command = TC_CLSFLOWER_STATS;
417 cls_flower.cookie = (unsigned long) f;
418 cls_flower.exts = &f->exts;
419 cls_flower.classid = f->res.classid;
421 tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
425 static bool __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
426 struct netlink_ext_ack *extack)
428 struct cls_fl_head *head = rtnl_dereference(tp->root);
429 bool async = tcf_exts_get_net(&f->exts);
432 idr_remove(&head->handle_idr, f->handle);
433 list_del_rcu(&f->list);
434 last = fl_mask_put(head, f->mask, async);
435 if (!tc_skip_hw(f->flags))
436 fl_hw_destroy_filter(tp, f, extack);
437 tcf_unbind_filter(tp, &f->res);
439 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
441 __fl_destroy_filter(f);
446 static void fl_destroy_sleepable(struct work_struct *work)
448 struct cls_fl_head *head = container_of(to_rcu_work(work),
452 rhashtable_destroy(&head->ht);
454 module_put(THIS_MODULE);
457 static void fl_destroy(struct tcf_proto *tp, struct netlink_ext_ack *extack)
459 struct cls_fl_head *head = rtnl_dereference(tp->root);
460 struct fl_flow_mask *mask, *next_mask;
461 struct cls_fl_filter *f, *next;
463 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
464 list_for_each_entry_safe(f, next, &mask->filters, list) {
465 if (__fl_delete(tp, f, extack))
469 idr_destroy(&head->handle_idr);
471 __module_get(THIS_MODULE);
472 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
475 static void *fl_get(struct tcf_proto *tp, u32 handle)
477 struct cls_fl_head *head = rtnl_dereference(tp->root);
479 return idr_find(&head->handle_idr, handle);
482 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
483 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
484 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
485 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
487 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
488 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
489 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
490 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
491 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
492 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
493 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
494 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
495 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
496 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
497 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
498 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
499 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
500 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
501 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
502 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
503 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
504 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
505 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
506 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
507 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
508 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
509 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
510 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
511 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
512 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
513 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
514 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
515 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
516 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
517 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
518 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
519 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
520 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
521 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
522 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
523 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
524 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
525 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
526 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
527 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
528 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
529 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
530 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
531 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
532 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
533 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
534 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
535 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
536 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
537 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
538 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
539 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
540 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
541 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
542 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
543 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
544 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
545 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
546 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
547 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
548 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
549 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
550 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
551 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
552 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
553 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
554 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
555 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
556 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
557 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
558 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
559 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
560 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
561 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
562 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
563 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
564 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
565 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
566 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
567 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
570 static const struct nla_policy
571 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
572 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
575 static const struct nla_policy
576 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
577 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
578 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
579 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
583 static void fl_set_key_val(struct nlattr **tb,
584 void *val, int val_type,
585 void *mask, int mask_type, int len)
589 memcpy(val, nla_data(tb[val_type]), len);
590 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
591 memset(mask, 0xff, len);
593 memcpy(mask, nla_data(tb[mask_type]), len);
596 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
597 struct fl_flow_key *mask)
599 fl_set_key_val(tb, &key->tp_min.dst,
600 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
601 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
602 fl_set_key_val(tb, &key->tp_max.dst,
603 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
604 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
605 fl_set_key_val(tb, &key->tp_min.src,
606 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
607 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
608 fl_set_key_val(tb, &key->tp_max.src,
609 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
610 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
612 if ((mask->tp_min.dst && mask->tp_max.dst &&
613 htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
614 (mask->tp_min.src && mask->tp_max.src &&
615 htons(key->tp_max.src) <= htons(key->tp_min.src)))
621 static int fl_set_key_mpls(struct nlattr **tb,
622 struct flow_dissector_key_mpls *key_val,
623 struct flow_dissector_key_mpls *key_mask)
625 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
626 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
627 key_mask->mpls_ttl = MPLS_TTL_MASK;
629 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
630 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
632 if (bos & ~MPLS_BOS_MASK)
634 key_val->mpls_bos = bos;
635 key_mask->mpls_bos = MPLS_BOS_MASK;
637 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
638 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
640 if (tc & ~MPLS_TC_MASK)
642 key_val->mpls_tc = tc;
643 key_mask->mpls_tc = MPLS_TC_MASK;
645 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
646 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
648 if (label & ~MPLS_LABEL_MASK)
650 key_val->mpls_label = label;
651 key_mask->mpls_label = MPLS_LABEL_MASK;
656 static void fl_set_key_vlan(struct nlattr **tb,
658 int vlan_id_key, int vlan_prio_key,
659 struct flow_dissector_key_vlan *key_val,
660 struct flow_dissector_key_vlan *key_mask)
662 #define VLAN_PRIORITY_MASK 0x7
664 if (tb[vlan_id_key]) {
666 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
667 key_mask->vlan_id = VLAN_VID_MASK;
669 if (tb[vlan_prio_key]) {
670 key_val->vlan_priority =
671 nla_get_u8(tb[vlan_prio_key]) &
673 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
675 key_val->vlan_tpid = ethertype;
676 key_mask->vlan_tpid = cpu_to_be16(~0);
679 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
680 u32 *dissector_key, u32 *dissector_mask,
681 u32 flower_flag_bit, u32 dissector_flag_bit)
683 if (flower_mask & flower_flag_bit) {
684 *dissector_mask |= dissector_flag_bit;
685 if (flower_key & flower_flag_bit)
686 *dissector_key |= dissector_flag_bit;
690 static int fl_set_key_flags(struct nlattr **tb,
691 u32 *flags_key, u32 *flags_mask)
695 /* mask is mandatory for flags */
696 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
699 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
700 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
705 fl_set_key_flag(key, mask, flags_key, flags_mask,
706 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
707 fl_set_key_flag(key, mask, flags_key, flags_mask,
708 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
709 FLOW_DIS_FIRST_FRAG);
714 static void fl_set_key_ip(struct nlattr **tb, bool encap,
715 struct flow_dissector_key_ip *key,
716 struct flow_dissector_key_ip *mask)
718 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
719 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
720 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
721 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
723 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
724 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
727 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
728 int depth, int option_len,
729 struct netlink_ext_ack *extack)
731 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
732 struct nlattr *class = NULL, *type = NULL, *data = NULL;
733 struct geneve_opt *opt;
734 int err, data_len = 0;
736 if (option_len > sizeof(struct geneve_opt))
737 data_len = option_len - sizeof(struct geneve_opt);
739 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
740 memset(opt, 0xff, option_len);
741 opt->length = data_len / 4;
746 /* If no mask has been prodived we assume an exact match. */
748 return sizeof(struct geneve_opt) + data_len;
750 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
751 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
755 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
756 nla, geneve_opt_policy, extack);
760 /* We are not allowed to omit any of CLASS, TYPE or DATA
761 * fields from the key.
764 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
765 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
766 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
767 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
771 /* Omitting any of CLASS, TYPE or DATA fields is allowed
774 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
775 int new_len = key->enc_opts.len;
777 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
778 data_len = nla_len(data);
780 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
784 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
788 new_len += sizeof(struct geneve_opt) + data_len;
789 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
790 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
791 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
794 opt->length = data_len / 4;
795 memcpy(opt->opt_data, nla_data(data), data_len);
798 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
799 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
800 opt->opt_class = nla_get_be16(class);
803 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
804 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
805 opt->type = nla_get_u8(type);
808 return sizeof(struct geneve_opt) + data_len;
811 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
812 struct fl_flow_key *mask,
813 struct netlink_ext_ack *extack)
815 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
816 int err, option_len, key_depth, msk_depth = 0;
818 err = nla_validate_nested(tb[TCA_FLOWER_KEY_ENC_OPTS],
819 TCA_FLOWER_KEY_ENC_OPTS_MAX,
820 enc_opts_policy, extack);
824 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
826 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
827 err = nla_validate_nested(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
828 TCA_FLOWER_KEY_ENC_OPTS_MAX,
829 enc_opts_policy, extack);
833 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
834 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
837 nla_for_each_attr(nla_opt_key, nla_enc_key,
838 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
839 switch (nla_type(nla_opt_key)) {
840 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
842 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
843 option_len = fl_set_geneve_opt(nla_opt_key, key,
844 key_depth, option_len,
849 key->enc_opts.len += option_len;
850 /* At the same time we need to parse through the mask
851 * in order to verify exact and mask attribute lengths.
853 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
854 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
855 msk_depth, option_len,
860 mask->enc_opts.len += option_len;
861 if (key->enc_opts.len != mask->enc_opts.len) {
862 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
867 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
870 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
878 static int fl_set_key(struct net *net, struct nlattr **tb,
879 struct fl_flow_key *key, struct fl_flow_key *mask,
880 struct netlink_ext_ack *extack)
884 #ifdef CONFIG_NET_CLS_IND
885 if (tb[TCA_FLOWER_INDEV]) {
886 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
889 key->indev_ifindex = err;
890 mask->indev_ifindex = 0xffffffff;
894 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
895 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
896 sizeof(key->eth.dst));
897 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
898 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
899 sizeof(key->eth.src));
901 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
902 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
904 if (eth_type_vlan(ethertype)) {
905 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
906 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
909 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
910 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
911 if (eth_type_vlan(ethertype)) {
912 fl_set_key_vlan(tb, ethertype,
913 TCA_FLOWER_KEY_CVLAN_ID,
914 TCA_FLOWER_KEY_CVLAN_PRIO,
915 &key->cvlan, &mask->cvlan);
916 fl_set_key_val(tb, &key->basic.n_proto,
917 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
918 &mask->basic.n_proto,
920 sizeof(key->basic.n_proto));
922 key->basic.n_proto = ethertype;
923 mask->basic.n_proto = cpu_to_be16(~0);
927 key->basic.n_proto = ethertype;
928 mask->basic.n_proto = cpu_to_be16(~0);
932 if (key->basic.n_proto == htons(ETH_P_IP) ||
933 key->basic.n_proto == htons(ETH_P_IPV6)) {
934 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
935 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
936 sizeof(key->basic.ip_proto));
937 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
940 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
941 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
942 mask->control.addr_type = ~0;
943 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
944 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
945 sizeof(key->ipv4.src));
946 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
947 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
948 sizeof(key->ipv4.dst));
949 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
950 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
951 mask->control.addr_type = ~0;
952 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
953 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
954 sizeof(key->ipv6.src));
955 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
956 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
957 sizeof(key->ipv6.dst));
960 if (key->basic.ip_proto == IPPROTO_TCP) {
961 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
962 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
963 sizeof(key->tp.src));
964 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
965 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
966 sizeof(key->tp.dst));
967 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
968 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
969 sizeof(key->tcp.flags));
970 } else if (key->basic.ip_proto == IPPROTO_UDP) {
971 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
972 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
973 sizeof(key->tp.src));
974 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
975 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
976 sizeof(key->tp.dst));
977 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
978 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
979 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
980 sizeof(key->tp.src));
981 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
982 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
983 sizeof(key->tp.dst));
984 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
985 key->basic.ip_proto == IPPROTO_ICMP) {
986 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
988 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
989 sizeof(key->icmp.type));
990 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
992 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
993 sizeof(key->icmp.code));
994 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
995 key->basic.ip_proto == IPPROTO_ICMPV6) {
996 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
998 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
999 sizeof(key->icmp.type));
1000 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1002 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1003 sizeof(key->icmp.code));
1004 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1005 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1006 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1009 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1010 key->basic.n_proto == htons(ETH_P_RARP)) {
1011 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1012 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1013 sizeof(key->arp.sip));
1014 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1015 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1016 sizeof(key->arp.tip));
1017 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1018 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1019 sizeof(key->arp.op));
1020 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1021 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1022 sizeof(key->arp.sha));
1023 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1024 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1025 sizeof(key->arp.tha));
1028 if (key->basic.ip_proto == IPPROTO_TCP ||
1029 key->basic.ip_proto == IPPROTO_UDP ||
1030 key->basic.ip_proto == IPPROTO_SCTP) {
1031 ret = fl_set_key_port_range(tb, key, mask);
1036 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1037 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1038 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1039 mask->enc_control.addr_type = ~0;
1040 fl_set_key_val(tb, &key->enc_ipv4.src,
1041 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1042 &mask->enc_ipv4.src,
1043 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1044 sizeof(key->enc_ipv4.src));
1045 fl_set_key_val(tb, &key->enc_ipv4.dst,
1046 TCA_FLOWER_KEY_ENC_IPV4_DST,
1047 &mask->enc_ipv4.dst,
1048 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1049 sizeof(key->enc_ipv4.dst));
1052 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1053 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1054 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1055 mask->enc_control.addr_type = ~0;
1056 fl_set_key_val(tb, &key->enc_ipv6.src,
1057 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1058 &mask->enc_ipv6.src,
1059 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1060 sizeof(key->enc_ipv6.src));
1061 fl_set_key_val(tb, &key->enc_ipv6.dst,
1062 TCA_FLOWER_KEY_ENC_IPV6_DST,
1063 &mask->enc_ipv6.dst,
1064 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1065 sizeof(key->enc_ipv6.dst));
1068 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1069 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1070 sizeof(key->enc_key_id.keyid));
1072 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1073 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1074 sizeof(key->enc_tp.src));
1076 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1077 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1078 sizeof(key->enc_tp.dst));
1080 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1082 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1083 ret = fl_set_enc_opt(tb, key, mask, extack);
1088 if (tb[TCA_FLOWER_KEY_FLAGS])
1089 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
1094 static void fl_mask_copy(struct fl_flow_mask *dst,
1095 struct fl_flow_mask *src)
1097 const void *psrc = fl_key_get_start(&src->key, src);
1098 void *pdst = fl_key_get_start(&dst->key, src);
1100 memcpy(pdst, psrc, fl_mask_range(src));
1101 dst->range = src->range;
1104 static const struct rhashtable_params fl_ht_params = {
1105 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1106 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1107 .automatic_shrinking = true,
1110 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1112 mask->filter_ht_params = fl_ht_params;
1113 mask->filter_ht_params.key_len = fl_mask_range(mask);
1114 mask->filter_ht_params.key_offset += mask->range.start;
1116 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1119 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1120 #define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
1122 #define FL_KEY_IS_MASKED(mask, member) \
1123 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1124 0, FL_KEY_MEMBER_SIZE(member)) \
1126 #define FL_KEY_SET(keys, cnt, id, member) \
1128 keys[cnt].key_id = id; \
1129 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1133 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1135 if (FL_KEY_IS_MASKED(mask, member)) \
1136 FL_KEY_SET(keys, cnt, id, member); \
1139 static void fl_init_dissector(struct flow_dissector *dissector,
1140 struct fl_flow_key *mask)
1142 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1145 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1146 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1147 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1148 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1149 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1150 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1151 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1152 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1153 if (FL_KEY_IS_MASKED(mask, tp) ||
1154 FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1155 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
1156 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1157 FLOW_DISSECTOR_KEY_IP, ip);
1158 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1159 FLOW_DISSECTOR_KEY_TCP, tcp);
1160 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1161 FLOW_DISSECTOR_KEY_ICMP, icmp);
1162 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1163 FLOW_DISSECTOR_KEY_ARP, arp);
1164 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1165 FLOW_DISSECTOR_KEY_MPLS, mpls);
1166 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1167 FLOW_DISSECTOR_KEY_VLAN, vlan);
1168 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1169 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1170 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1171 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1172 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1173 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1174 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1175 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1176 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1177 FL_KEY_IS_MASKED(mask, enc_ipv6))
1178 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1180 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1181 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1182 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1183 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1184 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1185 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1187 skb_flow_dissector_init(dissector, keys, cnt);
1190 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1191 struct fl_flow_mask *mask)
1193 struct fl_flow_mask *newmask;
1196 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1198 return ERR_PTR(-ENOMEM);
1200 fl_mask_copy(newmask, mask);
1202 if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1203 (newmask->key.tp_min.src && newmask->key.tp_max.src))
1204 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1206 err = fl_init_mask_hashtable(newmask);
1210 fl_init_dissector(&newmask->dissector, &newmask->key);
1212 INIT_LIST_HEAD_RCU(&newmask->filters);
1214 err = rhashtable_insert_fast(&head->ht, &newmask->ht_node,
1217 goto errout_destroy;
1219 list_add_tail_rcu(&newmask->list, &head->masks);
1224 rhashtable_destroy(&newmask->ht);
1228 return ERR_PTR(err);
1231 static int fl_check_assign_mask(struct cls_fl_head *head,
1232 struct cls_fl_filter *fnew,
1233 struct cls_fl_filter *fold,
1234 struct fl_flow_mask *mask)
1236 struct fl_flow_mask *newmask;
1238 fnew->mask = rhashtable_lookup_fast(&head->ht, mask, mask_ht_params);
1243 newmask = fl_create_new_mask(head, mask);
1244 if (IS_ERR(newmask))
1245 return PTR_ERR(newmask);
1247 fnew->mask = newmask;
1248 } else if (fold && fold->mask != fnew->mask) {
1255 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1256 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1257 unsigned long base, struct nlattr **tb,
1258 struct nlattr *est, bool ovr,
1259 struct fl_flow_tmplt *tmplt,
1260 struct netlink_ext_ack *extack)
1264 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, extack);
1268 if (tb[TCA_FLOWER_CLASSID]) {
1269 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1270 tcf_bind_filter(tp, &f->res, base);
1273 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1277 fl_mask_update_range(mask);
1278 fl_set_masked_key(&f->mkey, &f->key, mask);
1280 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1281 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1288 static int fl_change(struct net *net, struct sk_buff *in_skb,
1289 struct tcf_proto *tp, unsigned long base,
1290 u32 handle, struct nlattr **tca,
1291 void **arg, bool ovr, struct netlink_ext_ack *extack)
1293 struct cls_fl_head *head = rtnl_dereference(tp->root);
1294 struct cls_fl_filter *fold = *arg;
1295 struct cls_fl_filter *fnew;
1297 struct fl_flow_mask mask = {};
1300 if (!tca[TCA_OPTIONS])
1303 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1307 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
1312 if (fold && handle && fold->handle != handle) {
1317 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1323 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
1329 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1330 INT_MAX, GFP_KERNEL);
1332 /* user specifies a handle and it doesn't exist */
1333 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1334 handle, GFP_KERNEL);
1338 fnew->handle = handle;
1340 if (tb[TCA_FLOWER_FLAGS]) {
1341 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1343 if (!tc_flags_valid(fnew->flags)) {
1349 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr,
1350 tp->chain->tmplt_priv, extack);
1354 err = fl_check_assign_mask(head, fnew, fold, &mask);
1358 if (!tc_skip_sw(fnew->flags)) {
1359 if (!fold && __fl_lookup(fnew->mask, &fnew->mkey)) {
1364 err = rhashtable_insert_fast(&fnew->mask->ht, &fnew->ht_node,
1365 fnew->mask->filter_ht_params);
1370 if (!tc_skip_hw(fnew->flags)) {
1371 err = fl_hw_replace_filter(tp, fnew, extack);
1376 if (!tc_in_hw(fnew->flags))
1377 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1380 if (!tc_skip_sw(fold->flags))
1381 rhashtable_remove_fast(&fold->mask->ht,
1383 fold->mask->filter_ht_params);
1384 if (!tc_skip_hw(fold->flags))
1385 fl_hw_destroy_filter(tp, fold, NULL);
1391 idr_replace(&head->handle_idr, fnew, fnew->handle);
1392 list_replace_rcu(&fold->list, &fnew->list);
1393 tcf_unbind_filter(tp, &fold->res);
1394 tcf_exts_get_net(&fold->exts);
1395 tcf_queue_work(&fold->rwork, fl_destroy_filter_work);
1397 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
1404 fl_mask_put(head, fnew->mask, false);
1408 idr_remove(&head->handle_idr, fnew->handle);
1410 tcf_exts_destroy(&fnew->exts);
1417 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
1418 struct netlink_ext_ack *extack)
1420 struct cls_fl_head *head = rtnl_dereference(tp->root);
1421 struct cls_fl_filter *f = arg;
1423 if (!tc_skip_sw(f->flags))
1424 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
1425 f->mask->filter_ht_params);
1426 __fl_delete(tp, f, extack);
1427 *last = list_empty(&head->masks);
1431 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
1433 struct cls_fl_head *head = rtnl_dereference(tp->root);
1434 struct cls_fl_filter *f;
1436 arg->count = arg->skip;
1438 while ((f = idr_get_next_ul(&head->handle_idr,
1439 &arg->cookie)) != NULL) {
1440 if (arg->fn(tp, f, arg) < 0) {
1444 arg->cookie = f->handle + 1;
1449 static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
1450 void *cb_priv, struct netlink_ext_ack *extack)
1452 struct cls_fl_head *head = rtnl_dereference(tp->root);
1453 struct tc_cls_flower_offload cls_flower = {};
1454 struct tcf_block *block = tp->chain->block;
1455 struct fl_flow_mask *mask;
1456 struct cls_fl_filter *f;
1459 list_for_each_entry(mask, &head->masks, list) {
1460 list_for_each_entry(f, &mask->filters, list) {
1461 if (tc_skip_hw(f->flags))
1464 tc_cls_common_offload_init(&cls_flower.common, tp,
1466 cls_flower.command = add ?
1467 TC_CLSFLOWER_REPLACE : TC_CLSFLOWER_DESTROY;
1468 cls_flower.cookie = (unsigned long)f;
1469 cls_flower.dissector = &mask->dissector;
1470 cls_flower.mask = &mask->key;
1471 cls_flower.key = &f->mkey;
1472 cls_flower.exts = &f->exts;
1473 cls_flower.classid = f->res.classid;
1475 err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
1477 if (add && tc_skip_sw(f->flags))
1482 tc_cls_offload_cnt_update(block, &f->in_hw_count,
1490 static void fl_hw_create_tmplt(struct tcf_chain *chain,
1491 struct fl_flow_tmplt *tmplt)
1493 struct tc_cls_flower_offload cls_flower = {};
1494 struct tcf_block *block = chain->block;
1495 struct tcf_exts dummy_exts = { 0, };
1497 cls_flower.common.chain_index = chain->index;
1498 cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE;
1499 cls_flower.cookie = (unsigned long) tmplt;
1500 cls_flower.dissector = &tmplt->dissector;
1501 cls_flower.mask = &tmplt->mask;
1502 cls_flower.key = &tmplt->dummy_key;
1503 cls_flower.exts = &dummy_exts;
1505 /* We don't care if driver (any of them) fails to handle this
1506 * call. It serves just as a hint for it.
1508 tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER,
1509 &cls_flower, false);
1512 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
1513 struct fl_flow_tmplt *tmplt)
1515 struct tc_cls_flower_offload cls_flower = {};
1516 struct tcf_block *block = chain->block;
1518 cls_flower.common.chain_index = chain->index;
1519 cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY;
1520 cls_flower.cookie = (unsigned long) tmplt;
1522 tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER,
1523 &cls_flower, false);
1526 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
1527 struct nlattr **tca,
1528 struct netlink_ext_ack *extack)
1530 struct fl_flow_tmplt *tmplt;
1534 if (!tca[TCA_OPTIONS])
1535 return ERR_PTR(-EINVAL);
1537 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1539 return ERR_PTR(-ENOBUFS);
1540 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
1545 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1550 tmplt->chain = chain;
1551 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
1556 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
1558 fl_hw_create_tmplt(chain, tmplt);
1566 return ERR_PTR(err);
1569 static void fl_tmplt_destroy(void *tmplt_priv)
1571 struct fl_flow_tmplt *tmplt = tmplt_priv;
1573 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
1577 static int fl_dump_key_val(struct sk_buff *skb,
1578 void *val, int val_type,
1579 void *mask, int mask_type, int len)
1583 if (!memchr_inv(mask, 0, len))
1585 err = nla_put(skb, val_type, len, val);
1588 if (mask_type != TCA_FLOWER_UNSPEC) {
1589 err = nla_put(skb, mask_type, len, mask);
1596 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
1597 struct fl_flow_key *mask)
1599 if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
1600 &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
1601 sizeof(key->tp_min.dst)) ||
1602 fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
1603 &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
1604 sizeof(key->tp_max.dst)) ||
1605 fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
1606 &mask->tp_min.src, TCA_FLOWER_UNSPEC,
1607 sizeof(key->tp_min.src)) ||
1608 fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
1609 &mask->tp_max.src, TCA_FLOWER_UNSPEC,
1610 sizeof(key->tp_max.src)))
1616 static int fl_dump_key_mpls(struct sk_buff *skb,
1617 struct flow_dissector_key_mpls *mpls_key,
1618 struct flow_dissector_key_mpls *mpls_mask)
1622 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1624 if (mpls_mask->mpls_ttl) {
1625 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
1626 mpls_key->mpls_ttl);
1630 if (mpls_mask->mpls_tc) {
1631 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
1636 if (mpls_mask->mpls_label) {
1637 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
1638 mpls_key->mpls_label);
1642 if (mpls_mask->mpls_bos) {
1643 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
1644 mpls_key->mpls_bos);
1651 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
1652 struct flow_dissector_key_ip *key,
1653 struct flow_dissector_key_ip *mask)
1655 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1656 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1657 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1658 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1660 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
1661 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
1667 static int fl_dump_key_vlan(struct sk_buff *skb,
1668 int vlan_id_key, int vlan_prio_key,
1669 struct flow_dissector_key_vlan *vlan_key,
1670 struct flow_dissector_key_vlan *vlan_mask)
1674 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
1676 if (vlan_mask->vlan_id) {
1677 err = nla_put_u16(skb, vlan_id_key,
1682 if (vlan_mask->vlan_priority) {
1683 err = nla_put_u8(skb, vlan_prio_key,
1684 vlan_key->vlan_priority);
1691 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1692 u32 *flower_key, u32 *flower_mask,
1693 u32 flower_flag_bit, u32 dissector_flag_bit)
1695 if (dissector_mask & dissector_flag_bit) {
1696 *flower_mask |= flower_flag_bit;
1697 if (dissector_key & dissector_flag_bit)
1698 *flower_key |= flower_flag_bit;
1702 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1708 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1714 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1715 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1716 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1717 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1718 FLOW_DIS_FIRST_FRAG);
1720 _key = cpu_to_be32(key);
1721 _mask = cpu_to_be32(mask);
1723 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1727 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1730 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
1731 struct flow_dissector_key_enc_opts *enc_opts)
1733 struct geneve_opt *opt;
1734 struct nlattr *nest;
1737 nest = nla_nest_start(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
1739 goto nla_put_failure;
1741 while (enc_opts->len > opt_off) {
1742 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
1744 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
1746 goto nla_put_failure;
1747 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
1749 goto nla_put_failure;
1750 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
1751 opt->length * 4, opt->opt_data))
1752 goto nla_put_failure;
1754 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
1756 nla_nest_end(skb, nest);
1760 nla_nest_cancel(skb, nest);
1764 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
1765 struct flow_dissector_key_enc_opts *enc_opts)
1767 struct nlattr *nest;
1773 nest = nla_nest_start(skb, enc_opt_type);
1775 goto nla_put_failure;
1777 switch (enc_opts->dst_opt_type) {
1778 case TUNNEL_GENEVE_OPT:
1779 err = fl_dump_key_geneve_opt(skb, enc_opts);
1781 goto nla_put_failure;
1784 goto nla_put_failure;
1786 nla_nest_end(skb, nest);
1790 nla_nest_cancel(skb, nest);
1794 static int fl_dump_key_enc_opt(struct sk_buff *skb,
1795 struct flow_dissector_key_enc_opts *key_opts,
1796 struct flow_dissector_key_enc_opts *msk_opts)
1800 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
1804 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
1807 static int fl_dump_key(struct sk_buff *skb, struct net *net,
1808 struct fl_flow_key *key, struct fl_flow_key *mask)
1810 if (mask->indev_ifindex) {
1811 struct net_device *dev;
1813 dev = __dev_get_by_index(net, key->indev_ifindex);
1814 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1815 goto nla_put_failure;
1818 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1819 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1820 sizeof(key->eth.dst)) ||
1821 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1822 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1823 sizeof(key->eth.src)) ||
1824 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1825 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1826 sizeof(key->basic.n_proto)))
1827 goto nla_put_failure;
1829 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
1830 goto nla_put_failure;
1832 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
1833 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
1834 goto nla_put_failure;
1836 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
1837 TCA_FLOWER_KEY_CVLAN_PRIO,
1838 &key->cvlan, &mask->cvlan) ||
1839 (mask->cvlan.vlan_tpid &&
1840 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1841 key->cvlan.vlan_tpid)))
1842 goto nla_put_failure;
1844 if (mask->basic.n_proto) {
1845 if (mask->cvlan.vlan_tpid) {
1846 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1847 key->basic.n_proto))
1848 goto nla_put_failure;
1849 } else if (mask->vlan.vlan_tpid) {
1850 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1851 key->basic.n_proto))
1852 goto nla_put_failure;
1856 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1857 key->basic.n_proto == htons(ETH_P_IPV6)) &&
1858 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1859 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1860 sizeof(key->basic.ip_proto)) ||
1861 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
1862 goto nla_put_failure;
1864 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1865 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1866 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1867 sizeof(key->ipv4.src)) ||
1868 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1869 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1870 sizeof(key->ipv4.dst))))
1871 goto nla_put_failure;
1872 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1873 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1874 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1875 sizeof(key->ipv6.src)) ||
1876 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1877 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1878 sizeof(key->ipv6.dst))))
1879 goto nla_put_failure;
1881 if (key->basic.ip_proto == IPPROTO_TCP &&
1882 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1883 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1884 sizeof(key->tp.src)) ||
1885 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1886 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1887 sizeof(key->tp.dst)) ||
1888 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1889 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1890 sizeof(key->tcp.flags))))
1891 goto nla_put_failure;
1892 else if (key->basic.ip_proto == IPPROTO_UDP &&
1893 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1894 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1895 sizeof(key->tp.src)) ||
1896 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1897 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1898 sizeof(key->tp.dst))))
1899 goto nla_put_failure;
1900 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1901 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1902 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1903 sizeof(key->tp.src)) ||
1904 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1905 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1906 sizeof(key->tp.dst))))
1907 goto nla_put_failure;
1908 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1909 key->basic.ip_proto == IPPROTO_ICMP &&
1910 (fl_dump_key_val(skb, &key->icmp.type,
1911 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1912 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1913 sizeof(key->icmp.type)) ||
1914 fl_dump_key_val(skb, &key->icmp.code,
1915 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1916 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1917 sizeof(key->icmp.code))))
1918 goto nla_put_failure;
1919 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1920 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1921 (fl_dump_key_val(skb, &key->icmp.type,
1922 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1923 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1924 sizeof(key->icmp.type)) ||
1925 fl_dump_key_val(skb, &key->icmp.code,
1926 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1927 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1928 sizeof(key->icmp.code))))
1929 goto nla_put_failure;
1930 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1931 key->basic.n_proto == htons(ETH_P_RARP)) &&
1932 (fl_dump_key_val(skb, &key->arp.sip,
1933 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1934 TCA_FLOWER_KEY_ARP_SIP_MASK,
1935 sizeof(key->arp.sip)) ||
1936 fl_dump_key_val(skb, &key->arp.tip,
1937 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1938 TCA_FLOWER_KEY_ARP_TIP_MASK,
1939 sizeof(key->arp.tip)) ||
1940 fl_dump_key_val(skb, &key->arp.op,
1941 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1942 TCA_FLOWER_KEY_ARP_OP_MASK,
1943 sizeof(key->arp.op)) ||
1944 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1945 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1946 sizeof(key->arp.sha)) ||
1947 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1948 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1949 sizeof(key->arp.tha))))
1950 goto nla_put_failure;
1952 if ((key->basic.ip_proto == IPPROTO_TCP ||
1953 key->basic.ip_proto == IPPROTO_UDP ||
1954 key->basic.ip_proto == IPPROTO_SCTP) &&
1955 fl_dump_key_port_range(skb, key, mask))
1956 goto nla_put_failure;
1958 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1959 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1960 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1961 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1962 sizeof(key->enc_ipv4.src)) ||
1963 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1964 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1965 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1966 sizeof(key->enc_ipv4.dst))))
1967 goto nla_put_failure;
1968 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1969 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1970 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1971 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1972 sizeof(key->enc_ipv6.src)) ||
1973 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1974 TCA_FLOWER_KEY_ENC_IPV6_DST,
1975 &mask->enc_ipv6.dst,
1976 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1977 sizeof(key->enc_ipv6.dst))))
1978 goto nla_put_failure;
1980 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
1981 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
1982 sizeof(key->enc_key_id)) ||
1983 fl_dump_key_val(skb, &key->enc_tp.src,
1984 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1986 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1987 sizeof(key->enc_tp.src)) ||
1988 fl_dump_key_val(skb, &key->enc_tp.dst,
1989 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1991 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1992 sizeof(key->enc_tp.dst)) ||
1993 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
1994 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
1995 goto nla_put_failure;
1997 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1998 goto nla_put_failure;
2006 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2007 struct sk_buff *skb, struct tcmsg *t)
2009 struct cls_fl_filter *f = fh;
2010 struct nlattr *nest;
2011 struct fl_flow_key *key, *mask;
2016 t->tcm_handle = f->handle;
2018 nest = nla_nest_start(skb, TCA_OPTIONS);
2020 goto nla_put_failure;
2022 if (f->res.classid &&
2023 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
2024 goto nla_put_failure;
2027 mask = &f->mask->key;
2029 if (fl_dump_key(skb, net, key, mask))
2030 goto nla_put_failure;
2032 if (!tc_skip_hw(f->flags))
2033 fl_hw_update_stats(tp, f);
2035 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
2036 goto nla_put_failure;
2038 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2039 goto nla_put_failure;
2041 if (tcf_exts_dump(skb, &f->exts))
2042 goto nla_put_failure;
2044 nla_nest_end(skb, nest);
2046 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2047 goto nla_put_failure;
2052 nla_nest_cancel(skb, nest);
2056 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2058 struct fl_flow_tmplt *tmplt = tmplt_priv;
2059 struct fl_flow_key *key, *mask;
2060 struct nlattr *nest;
2062 nest = nla_nest_start(skb, TCA_OPTIONS);
2064 goto nla_put_failure;
2066 key = &tmplt->dummy_key;
2067 mask = &tmplt->mask;
2069 if (fl_dump_key(skb, net, key, mask))
2070 goto nla_put_failure;
2072 nla_nest_end(skb, nest);
2077 nla_nest_cancel(skb, nest);
2081 static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2083 struct cls_fl_filter *f = fh;
2085 if (f && f->res.classid == classid)
2089 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2091 .classify = fl_classify,
2093 .destroy = fl_destroy,
2095 .change = fl_change,
2096 .delete = fl_delete,
2098 .reoffload = fl_reoffload,
2100 .bind_class = fl_bind_class,
2101 .tmplt_create = fl_tmplt_create,
2102 .tmplt_destroy = fl_tmplt_destroy,
2103 .tmplt_dump = fl_tmplt_dump,
2104 .owner = THIS_MODULE,
2107 static int __init cls_fl_init(void)
2109 return register_tcf_proto_ops(&cls_fl_ops);
2112 static void __exit cls_fl_exit(void)
2114 unregister_tcf_proto_ops(&cls_fl_ops);
2117 module_init(cls_fl_init);
2118 module_exit(cls_fl_exit);
2120 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2121 MODULE_DESCRIPTION("Flower classifier");
2122 MODULE_LICENSE("GPL v2");