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, TC_SETUP_CLSFLOWER, &cls_flower, false);
372 tcf_block_offload_dec(block, &f->flags);
375 static int fl_hw_replace_filter(struct tcf_proto *tp,
376 struct cls_fl_filter *f,
377 struct netlink_ext_ack *extack)
379 struct tc_cls_flower_offload cls_flower = {};
380 struct tcf_block *block = tp->chain->block;
381 bool skip_sw = tc_skip_sw(f->flags);
384 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
385 cls_flower.command = TC_CLSFLOWER_REPLACE;
386 cls_flower.cookie = (unsigned long) f;
387 cls_flower.dissector = &f->mask->dissector;
388 cls_flower.mask = &f->mask->key;
389 cls_flower.key = &f->mkey;
390 cls_flower.exts = &f->exts;
391 cls_flower.classid = f->res.classid;
393 err = tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, skip_sw);
395 fl_hw_destroy_filter(tp, f, NULL);
397 } else if (err > 0) {
398 f->in_hw_count = err;
399 tcf_block_offload_inc(block, &f->flags);
402 if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
408 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
410 struct tc_cls_flower_offload cls_flower = {};
411 struct tcf_block *block = tp->chain->block;
413 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
414 cls_flower.command = TC_CLSFLOWER_STATS;
415 cls_flower.cookie = (unsigned long) f;
416 cls_flower.exts = &f->exts;
417 cls_flower.classid = f->res.classid;
419 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
422 static bool __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
423 struct netlink_ext_ack *extack)
425 struct cls_fl_head *head = rtnl_dereference(tp->root);
426 bool async = tcf_exts_get_net(&f->exts);
429 idr_remove(&head->handle_idr, f->handle);
430 list_del_rcu(&f->list);
431 last = fl_mask_put(head, f->mask, async);
432 if (!tc_skip_hw(f->flags))
433 fl_hw_destroy_filter(tp, f, extack);
434 tcf_unbind_filter(tp, &f->res);
436 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
438 __fl_destroy_filter(f);
443 static void fl_destroy_sleepable(struct work_struct *work)
445 struct cls_fl_head *head = container_of(to_rcu_work(work),
449 rhashtable_destroy(&head->ht);
451 module_put(THIS_MODULE);
454 static void fl_destroy(struct tcf_proto *tp, struct netlink_ext_ack *extack)
456 struct cls_fl_head *head = rtnl_dereference(tp->root);
457 struct fl_flow_mask *mask, *next_mask;
458 struct cls_fl_filter *f, *next;
460 list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
461 list_for_each_entry_safe(f, next, &mask->filters, list) {
462 if (__fl_delete(tp, f, extack))
466 idr_destroy(&head->handle_idr);
468 __module_get(THIS_MODULE);
469 tcf_queue_work(&head->rwork, fl_destroy_sleepable);
472 static void *fl_get(struct tcf_proto *tp, u32 handle)
474 struct cls_fl_head *head = rtnl_dereference(tp->root);
476 return idr_find(&head->handle_idr, handle);
479 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
480 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
481 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
482 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
484 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
485 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
486 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
487 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
488 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
489 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
490 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
491 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
492 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
493 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
494 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
495 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
496 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
497 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
498 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
499 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
500 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
501 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
502 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
503 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
504 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
505 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
506 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
507 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
508 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
509 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
510 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
511 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
512 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
513 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
514 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
515 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
516 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
517 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
518 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
519 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
520 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
521 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
522 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
523 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
524 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
525 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
526 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
527 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
528 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
529 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
530 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
531 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
532 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
533 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
534 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
535 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
536 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
537 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
538 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
539 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
540 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
541 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
542 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
543 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
544 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
545 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
546 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
547 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
548 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
549 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
550 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
551 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
552 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
553 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
554 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
555 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
556 [TCA_FLOWER_KEY_CVLAN_ID] = { .type = NLA_U16 },
557 [TCA_FLOWER_KEY_CVLAN_PRIO] = { .type = NLA_U8 },
558 [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
559 [TCA_FLOWER_KEY_ENC_IP_TOS] = { .type = NLA_U8 },
560 [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
561 [TCA_FLOWER_KEY_ENC_IP_TTL] = { .type = NLA_U8 },
562 [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
563 [TCA_FLOWER_KEY_ENC_OPTS] = { .type = NLA_NESTED },
564 [TCA_FLOWER_KEY_ENC_OPTS_MASK] = { .type = NLA_NESTED },
567 static const struct nla_policy
568 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
569 [TCA_FLOWER_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
572 static const struct nla_policy
573 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
574 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] = { .type = NLA_U16 },
575 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] = { .type = NLA_U8 },
576 [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA] = { .type = NLA_BINARY,
580 static void fl_set_key_val(struct nlattr **tb,
581 void *val, int val_type,
582 void *mask, int mask_type, int len)
586 memcpy(val, nla_data(tb[val_type]), len);
587 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
588 memset(mask, 0xff, len);
590 memcpy(mask, nla_data(tb[mask_type]), len);
593 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
594 struct fl_flow_key *mask)
596 fl_set_key_val(tb, &key->tp_min.dst,
597 TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
598 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
599 fl_set_key_val(tb, &key->tp_max.dst,
600 TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
601 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
602 fl_set_key_val(tb, &key->tp_min.src,
603 TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
604 TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
605 fl_set_key_val(tb, &key->tp_max.src,
606 TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
607 TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
609 if ((mask->tp_min.dst && mask->tp_max.dst &&
610 htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
611 (mask->tp_min.src && mask->tp_max.src &&
612 htons(key->tp_max.src) <= htons(key->tp_min.src)))
618 static int fl_set_key_mpls(struct nlattr **tb,
619 struct flow_dissector_key_mpls *key_val,
620 struct flow_dissector_key_mpls *key_mask)
622 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
623 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
624 key_mask->mpls_ttl = MPLS_TTL_MASK;
626 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
627 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
629 if (bos & ~MPLS_BOS_MASK)
631 key_val->mpls_bos = bos;
632 key_mask->mpls_bos = MPLS_BOS_MASK;
634 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
635 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
637 if (tc & ~MPLS_TC_MASK)
639 key_val->mpls_tc = tc;
640 key_mask->mpls_tc = MPLS_TC_MASK;
642 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
643 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
645 if (label & ~MPLS_LABEL_MASK)
647 key_val->mpls_label = label;
648 key_mask->mpls_label = MPLS_LABEL_MASK;
653 static void fl_set_key_vlan(struct nlattr **tb,
655 int vlan_id_key, int vlan_prio_key,
656 struct flow_dissector_key_vlan *key_val,
657 struct flow_dissector_key_vlan *key_mask)
659 #define VLAN_PRIORITY_MASK 0x7
661 if (tb[vlan_id_key]) {
663 nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
664 key_mask->vlan_id = VLAN_VID_MASK;
666 if (tb[vlan_prio_key]) {
667 key_val->vlan_priority =
668 nla_get_u8(tb[vlan_prio_key]) &
670 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
672 key_val->vlan_tpid = ethertype;
673 key_mask->vlan_tpid = cpu_to_be16(~0);
676 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
677 u32 *dissector_key, u32 *dissector_mask,
678 u32 flower_flag_bit, u32 dissector_flag_bit)
680 if (flower_mask & flower_flag_bit) {
681 *dissector_mask |= dissector_flag_bit;
682 if (flower_key & flower_flag_bit)
683 *dissector_key |= dissector_flag_bit;
687 static int fl_set_key_flags(struct nlattr **tb,
688 u32 *flags_key, u32 *flags_mask)
692 /* mask is mandatory for flags */
693 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
696 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
697 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
702 fl_set_key_flag(key, mask, flags_key, flags_mask,
703 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
704 fl_set_key_flag(key, mask, flags_key, flags_mask,
705 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
706 FLOW_DIS_FIRST_FRAG);
711 static void fl_set_key_ip(struct nlattr **tb, bool encap,
712 struct flow_dissector_key_ip *key,
713 struct flow_dissector_key_ip *mask)
715 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
716 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
717 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
718 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
720 fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
721 fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
724 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
725 int depth, int option_len,
726 struct netlink_ext_ack *extack)
728 struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
729 struct nlattr *class = NULL, *type = NULL, *data = NULL;
730 struct geneve_opt *opt;
731 int err, data_len = 0;
733 if (option_len > sizeof(struct geneve_opt))
734 data_len = option_len - sizeof(struct geneve_opt);
736 opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
737 memset(opt, 0xff, option_len);
738 opt->length = data_len / 4;
743 /* If no mask has been prodived we assume an exact match. */
745 return sizeof(struct geneve_opt) + data_len;
747 if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
748 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
752 err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
753 nla, geneve_opt_policy, extack);
757 /* We are not allowed to omit any of CLASS, TYPE or DATA
758 * fields from the key.
761 (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
762 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
763 !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
764 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
768 /* Omitting any of CLASS, TYPE or DATA fields is allowed
771 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
772 int new_len = key->enc_opts.len;
774 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
775 data_len = nla_len(data);
777 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
781 NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
785 new_len += sizeof(struct geneve_opt) + data_len;
786 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
787 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
788 NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
791 opt->length = data_len / 4;
792 memcpy(opt->opt_data, nla_data(data), data_len);
795 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
796 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
797 opt->opt_class = nla_get_be16(class);
800 if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
801 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
802 opt->type = nla_get_u8(type);
805 return sizeof(struct geneve_opt) + data_len;
808 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
809 struct fl_flow_key *mask,
810 struct netlink_ext_ack *extack)
812 const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
813 int err, option_len, key_depth, msk_depth = 0;
815 err = nla_validate_nested(tb[TCA_FLOWER_KEY_ENC_OPTS],
816 TCA_FLOWER_KEY_ENC_OPTS_MAX,
817 enc_opts_policy, extack);
821 nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
823 if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
824 err = nla_validate_nested(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
825 TCA_FLOWER_KEY_ENC_OPTS_MAX,
826 enc_opts_policy, extack);
830 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
831 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
834 nla_for_each_attr(nla_opt_key, nla_enc_key,
835 nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
836 switch (nla_type(nla_opt_key)) {
837 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
839 key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
840 option_len = fl_set_geneve_opt(nla_opt_key, key,
841 key_depth, option_len,
846 key->enc_opts.len += option_len;
847 /* At the same time we need to parse through the mask
848 * in order to verify exact and mask attribute lengths.
850 mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
851 option_len = fl_set_geneve_opt(nla_opt_msk, mask,
852 msk_depth, option_len,
857 mask->enc_opts.len += option_len;
858 if (key->enc_opts.len != mask->enc_opts.len) {
859 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
864 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
867 NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
875 static int fl_set_key(struct net *net, struct nlattr **tb,
876 struct fl_flow_key *key, struct fl_flow_key *mask,
877 struct netlink_ext_ack *extack)
881 #ifdef CONFIG_NET_CLS_IND
882 if (tb[TCA_FLOWER_INDEV]) {
883 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
886 key->indev_ifindex = err;
887 mask->indev_ifindex = 0xffffffff;
891 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
892 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
893 sizeof(key->eth.dst));
894 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
895 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
896 sizeof(key->eth.src));
898 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
899 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
901 if (eth_type_vlan(ethertype)) {
902 fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
903 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
906 if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
907 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
908 if (eth_type_vlan(ethertype)) {
909 fl_set_key_vlan(tb, ethertype,
910 TCA_FLOWER_KEY_CVLAN_ID,
911 TCA_FLOWER_KEY_CVLAN_PRIO,
912 &key->cvlan, &mask->cvlan);
913 fl_set_key_val(tb, &key->basic.n_proto,
914 TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
915 &mask->basic.n_proto,
917 sizeof(key->basic.n_proto));
919 key->basic.n_proto = ethertype;
920 mask->basic.n_proto = cpu_to_be16(~0);
924 key->basic.n_proto = ethertype;
925 mask->basic.n_proto = cpu_to_be16(~0);
929 if (key->basic.n_proto == htons(ETH_P_IP) ||
930 key->basic.n_proto == htons(ETH_P_IPV6)) {
931 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
932 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
933 sizeof(key->basic.ip_proto));
934 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
937 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
938 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
939 mask->control.addr_type = ~0;
940 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
941 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
942 sizeof(key->ipv4.src));
943 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
944 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
945 sizeof(key->ipv4.dst));
946 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
947 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
948 mask->control.addr_type = ~0;
949 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
950 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
951 sizeof(key->ipv6.src));
952 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
953 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
954 sizeof(key->ipv6.dst));
957 if (key->basic.ip_proto == IPPROTO_TCP) {
958 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
959 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
960 sizeof(key->tp.src));
961 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
962 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
963 sizeof(key->tp.dst));
964 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
965 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
966 sizeof(key->tcp.flags));
967 } else if (key->basic.ip_proto == IPPROTO_UDP) {
968 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
969 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
970 sizeof(key->tp.src));
971 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
972 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
973 sizeof(key->tp.dst));
974 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
975 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
976 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
977 sizeof(key->tp.src));
978 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
979 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
980 sizeof(key->tp.dst));
981 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
982 key->basic.ip_proto == IPPROTO_ICMP) {
983 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
985 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
986 sizeof(key->icmp.type));
987 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
989 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
990 sizeof(key->icmp.code));
991 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
992 key->basic.ip_proto == IPPROTO_ICMPV6) {
993 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
995 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
996 sizeof(key->icmp.type));
997 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
999 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1000 sizeof(key->icmp.code));
1001 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1002 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1003 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1006 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1007 key->basic.n_proto == htons(ETH_P_RARP)) {
1008 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1009 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1010 sizeof(key->arp.sip));
1011 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1012 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1013 sizeof(key->arp.tip));
1014 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1015 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1016 sizeof(key->arp.op));
1017 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1018 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1019 sizeof(key->arp.sha));
1020 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1021 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1022 sizeof(key->arp.tha));
1025 if (key->basic.ip_proto == IPPROTO_TCP ||
1026 key->basic.ip_proto == IPPROTO_UDP ||
1027 key->basic.ip_proto == IPPROTO_SCTP) {
1028 ret = fl_set_key_port_range(tb, key, mask);
1033 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1034 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1035 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1036 mask->enc_control.addr_type = ~0;
1037 fl_set_key_val(tb, &key->enc_ipv4.src,
1038 TCA_FLOWER_KEY_ENC_IPV4_SRC,
1039 &mask->enc_ipv4.src,
1040 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1041 sizeof(key->enc_ipv4.src));
1042 fl_set_key_val(tb, &key->enc_ipv4.dst,
1043 TCA_FLOWER_KEY_ENC_IPV4_DST,
1044 &mask->enc_ipv4.dst,
1045 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1046 sizeof(key->enc_ipv4.dst));
1049 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1050 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1051 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1052 mask->enc_control.addr_type = ~0;
1053 fl_set_key_val(tb, &key->enc_ipv6.src,
1054 TCA_FLOWER_KEY_ENC_IPV6_SRC,
1055 &mask->enc_ipv6.src,
1056 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1057 sizeof(key->enc_ipv6.src));
1058 fl_set_key_val(tb, &key->enc_ipv6.dst,
1059 TCA_FLOWER_KEY_ENC_IPV6_DST,
1060 &mask->enc_ipv6.dst,
1061 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1062 sizeof(key->enc_ipv6.dst));
1065 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1066 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1067 sizeof(key->enc_key_id.keyid));
1069 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1070 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1071 sizeof(key->enc_tp.src));
1073 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1074 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1075 sizeof(key->enc_tp.dst));
1077 fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1079 if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1080 ret = fl_set_enc_opt(tb, key, mask, extack);
1085 if (tb[TCA_FLOWER_KEY_FLAGS])
1086 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
1091 static void fl_mask_copy(struct fl_flow_mask *dst,
1092 struct fl_flow_mask *src)
1094 const void *psrc = fl_key_get_start(&src->key, src);
1095 void *pdst = fl_key_get_start(&dst->key, src);
1097 memcpy(pdst, psrc, fl_mask_range(src));
1098 dst->range = src->range;
1101 static const struct rhashtable_params fl_ht_params = {
1102 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1103 .head_offset = offsetof(struct cls_fl_filter, ht_node),
1104 .automatic_shrinking = true,
1107 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1109 mask->filter_ht_params = fl_ht_params;
1110 mask->filter_ht_params.key_len = fl_mask_range(mask);
1111 mask->filter_ht_params.key_offset += mask->range.start;
1113 return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1116 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1117 #define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
1119 #define FL_KEY_IS_MASKED(mask, member) \
1120 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
1121 0, FL_KEY_MEMBER_SIZE(member)) \
1123 #define FL_KEY_SET(keys, cnt, id, member) \
1125 keys[cnt].key_id = id; \
1126 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
1130 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
1132 if (FL_KEY_IS_MASKED(mask, member)) \
1133 FL_KEY_SET(keys, cnt, id, member); \
1136 static void fl_init_dissector(struct flow_dissector *dissector,
1137 struct fl_flow_key *mask)
1139 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1142 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1143 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1144 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1145 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1146 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1147 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1148 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1149 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1150 if (FL_KEY_IS_MASKED(mask, tp) ||
1151 FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1152 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
1153 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1154 FLOW_DISSECTOR_KEY_IP, ip);
1155 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1156 FLOW_DISSECTOR_KEY_TCP, tcp);
1157 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1158 FLOW_DISSECTOR_KEY_ICMP, icmp);
1159 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1160 FLOW_DISSECTOR_KEY_ARP, arp);
1161 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1162 FLOW_DISSECTOR_KEY_MPLS, mpls);
1163 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1164 FLOW_DISSECTOR_KEY_VLAN, vlan);
1165 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1166 FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1167 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1168 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1169 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1170 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1171 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1172 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1173 if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1174 FL_KEY_IS_MASKED(mask, enc_ipv6))
1175 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1177 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1178 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1179 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1180 FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1181 FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1182 FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1184 skb_flow_dissector_init(dissector, keys, cnt);
1187 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1188 struct fl_flow_mask *mask)
1190 struct fl_flow_mask *newmask;
1193 newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1195 return ERR_PTR(-ENOMEM);
1197 fl_mask_copy(newmask, mask);
1199 if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1200 (newmask->key.tp_min.src && newmask->key.tp_max.src))
1201 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1203 err = fl_init_mask_hashtable(newmask);
1207 fl_init_dissector(&newmask->dissector, &newmask->key);
1209 INIT_LIST_HEAD_RCU(&newmask->filters);
1211 err = rhashtable_insert_fast(&head->ht, &newmask->ht_node,
1214 goto errout_destroy;
1216 list_add_tail_rcu(&newmask->list, &head->masks);
1221 rhashtable_destroy(&newmask->ht);
1225 return ERR_PTR(err);
1228 static int fl_check_assign_mask(struct cls_fl_head *head,
1229 struct cls_fl_filter *fnew,
1230 struct cls_fl_filter *fold,
1231 struct fl_flow_mask *mask)
1233 struct fl_flow_mask *newmask;
1235 fnew->mask = rhashtable_lookup_fast(&head->ht, mask, mask_ht_params);
1240 newmask = fl_create_new_mask(head, mask);
1241 if (IS_ERR(newmask))
1242 return PTR_ERR(newmask);
1244 fnew->mask = newmask;
1245 } else if (fold && fold->mask != fnew->mask) {
1252 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1253 struct cls_fl_filter *f, struct fl_flow_mask *mask,
1254 unsigned long base, struct nlattr **tb,
1255 struct nlattr *est, bool ovr,
1256 struct fl_flow_tmplt *tmplt,
1257 struct netlink_ext_ack *extack)
1261 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, extack);
1265 if (tb[TCA_FLOWER_CLASSID]) {
1266 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1267 tcf_bind_filter(tp, &f->res, base);
1270 err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1274 fl_mask_update_range(mask);
1275 fl_set_masked_key(&f->mkey, &f->key, mask);
1277 if (!fl_mask_fits_tmplt(tmplt, mask)) {
1278 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1285 static int fl_change(struct net *net, struct sk_buff *in_skb,
1286 struct tcf_proto *tp, unsigned long base,
1287 u32 handle, struct nlattr **tca,
1288 void **arg, bool ovr, struct netlink_ext_ack *extack)
1290 struct cls_fl_head *head = rtnl_dereference(tp->root);
1291 struct cls_fl_filter *fold = *arg;
1292 struct cls_fl_filter *fnew;
1293 struct fl_flow_mask *mask;
1297 if (!tca[TCA_OPTIONS])
1300 mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
1304 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1307 goto errout_mask_alloc;
1310 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
1315 if (fold && handle && fold->handle != handle) {
1320 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1326 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
1332 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1333 INT_MAX, GFP_KERNEL);
1335 /* user specifies a handle and it doesn't exist */
1336 err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1337 handle, GFP_KERNEL);
1341 fnew->handle = handle;
1343 if (tb[TCA_FLOWER_FLAGS]) {
1344 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1346 if (!tc_flags_valid(fnew->flags)) {
1352 err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
1353 tp->chain->tmplt_priv, extack);
1357 err = fl_check_assign_mask(head, fnew, fold, mask);
1361 if (!fold && __fl_lookup(fnew->mask, &fnew->mkey)) {
1366 err = rhashtable_insert_fast(&fnew->mask->ht, &fnew->ht_node,
1367 fnew->mask->filter_ht_params);
1371 if (!tc_skip_hw(fnew->flags)) {
1372 err = fl_hw_replace_filter(tp, fnew, extack);
1374 goto errout_mask_ht;
1377 if (!tc_in_hw(fnew->flags))
1378 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
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);
1405 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1406 fnew->mask->filter_ht_params);
1409 fl_mask_put(head, fnew->mask, false);
1413 idr_remove(&head->handle_idr, fnew->handle);
1415 tcf_exts_destroy(&fnew->exts);
1424 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
1425 struct netlink_ext_ack *extack)
1427 struct cls_fl_head *head = rtnl_dereference(tp->root);
1428 struct cls_fl_filter *f = arg;
1430 rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
1431 f->mask->filter_ht_params);
1432 __fl_delete(tp, f, extack);
1433 *last = list_empty(&head->masks);
1437 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
1439 struct cls_fl_head *head = rtnl_dereference(tp->root);
1440 struct cls_fl_filter *f;
1442 arg->count = arg->skip;
1444 while ((f = idr_get_next_ul(&head->handle_idr,
1445 &arg->cookie)) != NULL) {
1446 if (arg->fn(tp, f, arg) < 0) {
1450 arg->cookie = f->handle + 1;
1455 static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
1456 void *cb_priv, struct netlink_ext_ack *extack)
1458 struct cls_fl_head *head = rtnl_dereference(tp->root);
1459 struct tc_cls_flower_offload cls_flower = {};
1460 struct tcf_block *block = tp->chain->block;
1461 struct fl_flow_mask *mask;
1462 struct cls_fl_filter *f;
1465 list_for_each_entry(mask, &head->masks, list) {
1466 list_for_each_entry(f, &mask->filters, list) {
1467 if (tc_skip_hw(f->flags))
1470 tc_cls_common_offload_init(&cls_flower.common, tp,
1472 cls_flower.command = add ?
1473 TC_CLSFLOWER_REPLACE : TC_CLSFLOWER_DESTROY;
1474 cls_flower.cookie = (unsigned long)f;
1475 cls_flower.dissector = &mask->dissector;
1476 cls_flower.mask = &mask->key;
1477 cls_flower.key = &f->mkey;
1478 cls_flower.exts = &f->exts;
1479 cls_flower.classid = f->res.classid;
1481 err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
1483 if (add && tc_skip_sw(f->flags))
1488 tc_cls_offload_cnt_update(block, &f->in_hw_count,
1496 static void fl_hw_create_tmplt(struct tcf_chain *chain,
1497 struct fl_flow_tmplt *tmplt)
1499 struct tc_cls_flower_offload cls_flower = {};
1500 struct tcf_block *block = chain->block;
1501 struct tcf_exts dummy_exts = { 0, };
1503 cls_flower.common.chain_index = chain->index;
1504 cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE;
1505 cls_flower.cookie = (unsigned long) tmplt;
1506 cls_flower.dissector = &tmplt->dissector;
1507 cls_flower.mask = &tmplt->mask;
1508 cls_flower.key = &tmplt->dummy_key;
1509 cls_flower.exts = &dummy_exts;
1511 /* We don't care if driver (any of them) fails to handle this
1512 * call. It serves just as a hint for it.
1514 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
1517 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
1518 struct fl_flow_tmplt *tmplt)
1520 struct tc_cls_flower_offload cls_flower = {};
1521 struct tcf_block *block = chain->block;
1523 cls_flower.common.chain_index = chain->index;
1524 cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY;
1525 cls_flower.cookie = (unsigned long) tmplt;
1527 tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false);
1530 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
1531 struct nlattr **tca,
1532 struct netlink_ext_ack *extack)
1534 struct fl_flow_tmplt *tmplt;
1538 if (!tca[TCA_OPTIONS])
1539 return ERR_PTR(-EINVAL);
1541 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1543 return ERR_PTR(-ENOBUFS);
1544 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
1549 tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
1554 tmplt->chain = chain;
1555 err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
1560 fl_init_dissector(&tmplt->dissector, &tmplt->mask);
1562 fl_hw_create_tmplt(chain, tmplt);
1570 return ERR_PTR(err);
1573 static void fl_tmplt_destroy(void *tmplt_priv)
1575 struct fl_flow_tmplt *tmplt = tmplt_priv;
1577 fl_hw_destroy_tmplt(tmplt->chain, tmplt);
1581 static int fl_dump_key_val(struct sk_buff *skb,
1582 void *val, int val_type,
1583 void *mask, int mask_type, int len)
1587 if (!memchr_inv(mask, 0, len))
1589 err = nla_put(skb, val_type, len, val);
1592 if (mask_type != TCA_FLOWER_UNSPEC) {
1593 err = nla_put(skb, mask_type, len, mask);
1600 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
1601 struct fl_flow_key *mask)
1603 if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
1604 &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
1605 sizeof(key->tp_min.dst)) ||
1606 fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
1607 &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
1608 sizeof(key->tp_max.dst)) ||
1609 fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
1610 &mask->tp_min.src, TCA_FLOWER_UNSPEC,
1611 sizeof(key->tp_min.src)) ||
1612 fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
1613 &mask->tp_max.src, TCA_FLOWER_UNSPEC,
1614 sizeof(key->tp_max.src)))
1620 static int fl_dump_key_mpls(struct sk_buff *skb,
1621 struct flow_dissector_key_mpls *mpls_key,
1622 struct flow_dissector_key_mpls *mpls_mask)
1626 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1628 if (mpls_mask->mpls_ttl) {
1629 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
1630 mpls_key->mpls_ttl);
1634 if (mpls_mask->mpls_tc) {
1635 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
1640 if (mpls_mask->mpls_label) {
1641 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
1642 mpls_key->mpls_label);
1646 if (mpls_mask->mpls_bos) {
1647 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
1648 mpls_key->mpls_bos);
1655 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
1656 struct flow_dissector_key_ip *key,
1657 struct flow_dissector_key_ip *mask)
1659 int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
1660 int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
1661 int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
1662 int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
1664 if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
1665 fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
1671 static int fl_dump_key_vlan(struct sk_buff *skb,
1672 int vlan_id_key, int vlan_prio_key,
1673 struct flow_dissector_key_vlan *vlan_key,
1674 struct flow_dissector_key_vlan *vlan_mask)
1678 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
1680 if (vlan_mask->vlan_id) {
1681 err = nla_put_u16(skb, vlan_id_key,
1686 if (vlan_mask->vlan_priority) {
1687 err = nla_put_u8(skb, vlan_prio_key,
1688 vlan_key->vlan_priority);
1695 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1696 u32 *flower_key, u32 *flower_mask,
1697 u32 flower_flag_bit, u32 dissector_flag_bit)
1699 if (dissector_mask & dissector_flag_bit) {
1700 *flower_mask |= flower_flag_bit;
1701 if (dissector_key & dissector_flag_bit)
1702 *flower_key |= flower_flag_bit;
1706 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1712 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1718 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1719 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1720 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1721 TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
1722 FLOW_DIS_FIRST_FRAG);
1724 _key = cpu_to_be32(key);
1725 _mask = cpu_to_be32(mask);
1727 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1731 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1734 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
1735 struct flow_dissector_key_enc_opts *enc_opts)
1737 struct geneve_opt *opt;
1738 struct nlattr *nest;
1741 nest = nla_nest_start(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
1743 goto nla_put_failure;
1745 while (enc_opts->len > opt_off) {
1746 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
1748 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
1750 goto nla_put_failure;
1751 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
1753 goto nla_put_failure;
1754 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
1755 opt->length * 4, opt->opt_data))
1756 goto nla_put_failure;
1758 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
1760 nla_nest_end(skb, nest);
1764 nla_nest_cancel(skb, nest);
1768 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
1769 struct flow_dissector_key_enc_opts *enc_opts)
1771 struct nlattr *nest;
1777 nest = nla_nest_start(skb, enc_opt_type);
1779 goto nla_put_failure;
1781 switch (enc_opts->dst_opt_type) {
1782 case TUNNEL_GENEVE_OPT:
1783 err = fl_dump_key_geneve_opt(skb, enc_opts);
1785 goto nla_put_failure;
1788 goto nla_put_failure;
1790 nla_nest_end(skb, nest);
1794 nla_nest_cancel(skb, nest);
1798 static int fl_dump_key_enc_opt(struct sk_buff *skb,
1799 struct flow_dissector_key_enc_opts *key_opts,
1800 struct flow_dissector_key_enc_opts *msk_opts)
1804 err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
1808 return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
1811 static int fl_dump_key(struct sk_buff *skb, struct net *net,
1812 struct fl_flow_key *key, struct fl_flow_key *mask)
1814 if (mask->indev_ifindex) {
1815 struct net_device *dev;
1817 dev = __dev_get_by_index(net, key->indev_ifindex);
1818 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1819 goto nla_put_failure;
1822 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1823 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1824 sizeof(key->eth.dst)) ||
1825 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1826 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1827 sizeof(key->eth.src)) ||
1828 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1829 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1830 sizeof(key->basic.n_proto)))
1831 goto nla_put_failure;
1833 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
1834 goto nla_put_failure;
1836 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
1837 TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
1838 goto nla_put_failure;
1840 if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
1841 TCA_FLOWER_KEY_CVLAN_PRIO,
1842 &key->cvlan, &mask->cvlan) ||
1843 (mask->cvlan.vlan_tpid &&
1844 nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1845 key->cvlan.vlan_tpid)))
1846 goto nla_put_failure;
1848 if (mask->basic.n_proto) {
1849 if (mask->cvlan.vlan_tpid) {
1850 if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1851 key->basic.n_proto))
1852 goto nla_put_failure;
1853 } else if (mask->vlan.vlan_tpid) {
1854 if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
1855 key->basic.n_proto))
1856 goto nla_put_failure;
1860 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1861 key->basic.n_proto == htons(ETH_P_IPV6)) &&
1862 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1863 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1864 sizeof(key->basic.ip_proto)) ||
1865 fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
1866 goto nla_put_failure;
1868 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1869 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1870 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1871 sizeof(key->ipv4.src)) ||
1872 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1873 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1874 sizeof(key->ipv4.dst))))
1875 goto nla_put_failure;
1876 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1877 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1878 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1879 sizeof(key->ipv6.src)) ||
1880 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1881 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1882 sizeof(key->ipv6.dst))))
1883 goto nla_put_failure;
1885 if (key->basic.ip_proto == IPPROTO_TCP &&
1886 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1887 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1888 sizeof(key->tp.src)) ||
1889 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1890 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1891 sizeof(key->tp.dst)) ||
1892 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1893 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1894 sizeof(key->tcp.flags))))
1895 goto nla_put_failure;
1896 else if (key->basic.ip_proto == IPPROTO_UDP &&
1897 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1898 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1899 sizeof(key->tp.src)) ||
1900 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1901 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1902 sizeof(key->tp.dst))))
1903 goto nla_put_failure;
1904 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1905 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1906 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1907 sizeof(key->tp.src)) ||
1908 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1909 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1910 sizeof(key->tp.dst))))
1911 goto nla_put_failure;
1912 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1913 key->basic.ip_proto == IPPROTO_ICMP &&
1914 (fl_dump_key_val(skb, &key->icmp.type,
1915 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1916 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1917 sizeof(key->icmp.type)) ||
1918 fl_dump_key_val(skb, &key->icmp.code,
1919 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1920 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1921 sizeof(key->icmp.code))))
1922 goto nla_put_failure;
1923 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1924 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1925 (fl_dump_key_val(skb, &key->icmp.type,
1926 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1927 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1928 sizeof(key->icmp.type)) ||
1929 fl_dump_key_val(skb, &key->icmp.code,
1930 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1931 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1932 sizeof(key->icmp.code))))
1933 goto nla_put_failure;
1934 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1935 key->basic.n_proto == htons(ETH_P_RARP)) &&
1936 (fl_dump_key_val(skb, &key->arp.sip,
1937 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1938 TCA_FLOWER_KEY_ARP_SIP_MASK,
1939 sizeof(key->arp.sip)) ||
1940 fl_dump_key_val(skb, &key->arp.tip,
1941 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1942 TCA_FLOWER_KEY_ARP_TIP_MASK,
1943 sizeof(key->arp.tip)) ||
1944 fl_dump_key_val(skb, &key->arp.op,
1945 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1946 TCA_FLOWER_KEY_ARP_OP_MASK,
1947 sizeof(key->arp.op)) ||
1948 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1949 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1950 sizeof(key->arp.sha)) ||
1951 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1952 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1953 sizeof(key->arp.tha))))
1954 goto nla_put_failure;
1956 if ((key->basic.ip_proto == IPPROTO_TCP ||
1957 key->basic.ip_proto == IPPROTO_UDP ||
1958 key->basic.ip_proto == IPPROTO_SCTP) &&
1959 fl_dump_key_port_range(skb, key, mask))
1960 goto nla_put_failure;
1962 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1963 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1964 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1965 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1966 sizeof(key->enc_ipv4.src)) ||
1967 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1968 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1969 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1970 sizeof(key->enc_ipv4.dst))))
1971 goto nla_put_failure;
1972 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1973 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1974 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1975 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1976 sizeof(key->enc_ipv6.src)) ||
1977 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1978 TCA_FLOWER_KEY_ENC_IPV6_DST,
1979 &mask->enc_ipv6.dst,
1980 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1981 sizeof(key->enc_ipv6.dst))))
1982 goto nla_put_failure;
1984 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
1985 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
1986 sizeof(key->enc_key_id)) ||
1987 fl_dump_key_val(skb, &key->enc_tp.src,
1988 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1990 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1991 sizeof(key->enc_tp.src)) ||
1992 fl_dump_key_val(skb, &key->enc_tp.dst,
1993 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1995 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1996 sizeof(key->enc_tp.dst)) ||
1997 fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
1998 fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
1999 goto nla_put_failure;
2001 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2002 goto nla_put_failure;
2010 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2011 struct sk_buff *skb, struct tcmsg *t)
2013 struct cls_fl_filter *f = fh;
2014 struct nlattr *nest;
2015 struct fl_flow_key *key, *mask;
2020 t->tcm_handle = f->handle;
2022 nest = nla_nest_start(skb, TCA_OPTIONS);
2024 goto nla_put_failure;
2026 if (f->res.classid &&
2027 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
2028 goto nla_put_failure;
2031 mask = &f->mask->key;
2033 if (fl_dump_key(skb, net, key, mask))
2034 goto nla_put_failure;
2036 if (!tc_skip_hw(f->flags))
2037 fl_hw_update_stats(tp, f);
2039 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
2040 goto nla_put_failure;
2042 if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2043 goto nla_put_failure;
2045 if (tcf_exts_dump(skb, &f->exts))
2046 goto nla_put_failure;
2048 nla_nest_end(skb, nest);
2050 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2051 goto nla_put_failure;
2056 nla_nest_cancel(skb, nest);
2060 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2062 struct fl_flow_tmplt *tmplt = tmplt_priv;
2063 struct fl_flow_key *key, *mask;
2064 struct nlattr *nest;
2066 nest = nla_nest_start(skb, TCA_OPTIONS);
2068 goto nla_put_failure;
2070 key = &tmplt->dummy_key;
2071 mask = &tmplt->mask;
2073 if (fl_dump_key(skb, net, key, mask))
2074 goto nla_put_failure;
2076 nla_nest_end(skb, nest);
2081 nla_nest_cancel(skb, nest);
2085 static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2087 struct cls_fl_filter *f = fh;
2089 if (f && f->res.classid == classid)
2093 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2095 .classify = fl_classify,
2097 .destroy = fl_destroy,
2099 .change = fl_change,
2100 .delete = fl_delete,
2102 .reoffload = fl_reoffload,
2104 .bind_class = fl_bind_class,
2105 .tmplt_create = fl_tmplt_create,
2106 .tmplt_destroy = fl_tmplt_destroy,
2107 .tmplt_dump = fl_tmplt_dump,
2108 .owner = THIS_MODULE,
2111 static int __init cls_fl_init(void)
2113 return register_tcf_proto_ops(&cls_fl_ops);
2116 static void __exit cls_fl_exit(void)
2118 unregister_tcf_proto_ops(&cls_fl_ops);
2121 module_init(cls_fl_init);
2122 module_exit(cls_fl_exit);
2124 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2125 MODULE_DESCRIPTION("Flower classifier");
2126 MODULE_LICENSE("GPL v2");