net/sched/cls_flower.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * net/sched/cls_flower.c               Flower classifier
   4  *
   5  * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/init.h>
  10 #include <linux/module.h>
  11 #include <linux/rhashtable.h>
  12 #include <linux/workqueue.h>
  13 #include <linux/refcount.h>
  14
  15 #include <linux/if_ether.h>
  16 #include <linux/in6.h>
  17 #include <linux/ip.h>
  18 #include <linux/mpls.h>
  19
  20 #include <net/sch_generic.h>
  21 #include <net/pkt_cls.h>
  22 #include <net/ip.h>
  23 #include <net/flow_dissector.h>
  24 #include <net/geneve.h>
  25 #include <net/vxlan.h>
  26 #include <net/erspan.h>
  27
  28 #include <net/dst.h>
  29 #include <net/dst_metadata.h>
  30
  31 #include <uapi/linux/netfilter/nf_conntrack_common.h>
  32
  33 struct fl_flow_key {
  34         struct flow_dissector_key_meta meta;
  35         struct flow_dissector_key_control control;
  36         struct flow_dissector_key_control enc_control;
  37         struct flow_dissector_key_basic basic;
  38         struct flow_dissector_key_eth_addrs eth;
  39         struct flow_dissector_key_vlan vlan;
  40         struct flow_dissector_key_vlan cvlan;
  41         union {
  42                 struct flow_dissector_key_ipv4_addrs ipv4;
  43                 struct flow_dissector_key_ipv6_addrs ipv6;
  44         };
  45         struct flow_dissector_key_ports tp;
  46         struct flow_dissector_key_icmp icmp;
  47         struct flow_dissector_key_arp arp;
  48         struct flow_dissector_key_keyid enc_key_id;
  49         union {
  50                 struct flow_dissector_key_ipv4_addrs enc_ipv4;
  51                 struct flow_dissector_key_ipv6_addrs enc_ipv6;
  52         };
  53         struct flow_dissector_key_ports enc_tp;
  54         struct flow_dissector_key_mpls mpls;
  55         struct flow_dissector_key_tcp tcp;
  56         struct flow_dissector_key_ip ip;
  57         struct flow_dissector_key_ip enc_ip;
  58         struct flow_dissector_key_enc_opts enc_opts;
  59         struct flow_dissector_key_ports tp_min;
  60         struct flow_dissector_key_ports tp_max;
  61         struct flow_dissector_key_ct ct;
  62 } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
  63
  64 struct fl_flow_mask_range {
  65         unsigned short int start;
  66         unsigned short int end;
  67 };
  68
  69 struct fl_flow_mask {
  70         struct fl_flow_key key;
  71         struct fl_flow_mask_range range;
  72         u32 flags;
  73         struct rhash_head ht_node;
  74         struct rhashtable ht;
  75         struct rhashtable_params filter_ht_params;
  76         struct flow_dissector dissector;
  77         struct list_head filters;
  78         struct rcu_work rwork;
  79         struct list_head list;
  80         refcount_t refcnt;
  81 };
  82
  83 struct fl_flow_tmplt {
  84         struct fl_flow_key dummy_key;
  85         struct fl_flow_key mask;
  86         struct flow_dissector dissector;
  87         struct tcf_chain *chain;
  88 };
  89
  90 struct cls_fl_head {
  91         struct rhashtable ht;
  92         spinlock_t masks_lock; /* Protect masks list */
  93         struct list_head masks;
  94         struct list_head hw_filters;
  95         struct rcu_work rwork;
  96         struct idr handle_idr;
  97 };
  98
  99 struct cls_fl_filter {
 100         struct fl_flow_mask *mask;
 101         struct rhash_head ht_node;
 102         struct fl_flow_key mkey;
 103         struct tcf_exts exts;
 104         struct tcf_result res;
 105         struct fl_flow_key key;
 106         struct list_head list;
 107         struct list_head hw_list;
 108         u32 handle;
 109         u32 flags;
 110         u32 in_hw_count;
 111         struct rcu_work rwork;
 112         struct net_device *hw_dev;
 113         /* Flower classifier is unlocked, which means that its reference counter
 114          * can be changed concurrently without any kind of external
 115          * synchronization. Use atomic reference counter to be concurrency-safe.
 116          */
 117         refcount_t refcnt;
 118         bool deleted;
 119 };
 120
 121 static const struct rhashtable_params mask_ht_params = {
 122         .key_offset = offsetof(struct fl_flow_mask, key),
 123         .key_len = sizeof(struct fl_flow_key),
 124         .head_offset = offsetof(struct fl_flow_mask, ht_node),
 125         .automatic_shrinking = true,
 126 };
 127
 128 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
 129 {
 130         return mask->range.end - mask->range.start;
 131 }
 132
 133 static void fl_mask_update_range(struct fl_flow_mask *mask)
 134 {
 135         const u8 *bytes = (const u8 *) &mask->key;
 136         size_t size = sizeof(mask->key);
 137         size_t i, first = 0, last;
 138
 139         for (i = 0; i < size; i++) {
 140                 if (bytes[i]) {
 141                         first = i;
 142                         break;
 143                 }
 144         }
 145         last = first;
 146         for (i = size - 1; i != first; i--) {
 147                 if (bytes[i]) {
 148                         last = i;
 149                         break;
 150                 }
 151         }
 152         mask->range.start = rounddown(first, sizeof(long));
 153         mask->range.end = roundup(last + 1, sizeof(long));
 154 }
 155
 156 static void *fl_key_get_start(struct fl_flow_key *key,
 157                               const struct fl_flow_mask *mask)
 158 {
 159         return (u8 *) key + mask->range.start;
 160 }
 161
 162 static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
 163                               struct fl_flow_mask *mask)
 164 {
 165         const long *lkey = fl_key_get_start(key, mask);
 166         const long *lmask = fl_key_get_start(&mask->key, mask);
 167         long *lmkey = fl_key_get_start(mkey, mask);
 168         int i;
 169
 170         for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
 171                 *lmkey++ = *lkey++ & *lmask++;
 172 }
 173
 174 static bool fl_mask_fits_tmplt(struct fl_flow_tmplt *tmplt,
 175                                struct fl_flow_mask *mask)
 176 {
 177         const long *lmask = fl_key_get_start(&mask->key, mask);
 178         const long *ltmplt;
 179         int i;
 180
 181         if (!tmplt)
 182                 return true;
 183         ltmplt = fl_key_get_start(&tmplt->mask, mask);
 184         for (i = 0; i < fl_mask_range(mask); i += sizeof(long)) {
 185                 if (~*ltmplt++ & *lmask++)
 186                         return false;
 187         }
 188         return true;
 189 }
 190
 191 static void fl_clear_masked_range(struct fl_flow_key *key,
 192                                   struct fl_flow_mask *mask)
 193 {
 194         memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
 195 }
 196
 197 static bool fl_range_port_dst_cmp(struct cls_fl_filter *filter,
 198                                   struct fl_flow_key *key,
 199                                   struct fl_flow_key *mkey)
 200 {
 201         __be16 min_mask, max_mask, min_val, max_val;
 202
 203         min_mask = htons(filter->mask->key.tp_min.dst);
 204         max_mask = htons(filter->mask->key.tp_max.dst);
 205         min_val = htons(filter->key.tp_min.dst);
 206         max_val = htons(filter->key.tp_max.dst);
 207
 208         if (min_mask && max_mask) {
 209                 if (htons(key->tp.dst) < min_val ||
 210                     htons(key->tp.dst) > max_val)
 211                         return false;
 212
 213                 /* skb does not have min and max values */
 214                 mkey->tp_min.dst = filter->mkey.tp_min.dst;
 215                 mkey->tp_max.dst = filter->mkey.tp_max.dst;
 216         }
 217         return true;
 218 }
 219
 220 static bool fl_range_port_src_cmp(struct cls_fl_filter *filter,
 221                                   struct fl_flow_key *key,
 222                                   struct fl_flow_key *mkey)
 223 {
 224         __be16 min_mask, max_mask, min_val, max_val;
 225
 226         min_mask = htons(filter->mask->key.tp_min.src);
 227         max_mask = htons(filter->mask->key.tp_max.src);
 228         min_val = htons(filter->key.tp_min.src);
 229         max_val = htons(filter->key.tp_max.src);
 230
 231         if (min_mask && max_mask) {
 232                 if (htons(key->tp.src) < min_val ||
 233                     htons(key->tp.src) > max_val)
 234                         return false;
 235
 236                 /* skb does not have min and max values */
 237                 mkey->tp_min.src = filter->mkey.tp_min.src;
 238                 mkey->tp_max.src = filter->mkey.tp_max.src;
 239         }
 240         return true;
 241 }
 242
 243 static struct cls_fl_filter *__fl_lookup(struct fl_flow_mask *mask,
 244                                          struct fl_flow_key *mkey)
 245 {
 246         return rhashtable_lookup_fast(&mask->ht, fl_key_get_start(mkey, mask),
 247                                       mask->filter_ht_params);
 248 }
 249
 250 static struct cls_fl_filter *fl_lookup_range(struct fl_flow_mask *mask,
 251                                              struct fl_flow_key *mkey,
 252                                              struct fl_flow_key *key)
 253 {
 254         struct cls_fl_filter *filter, *f;
 255
 256         list_for_each_entry_rcu(filter, &mask->filters, list) {
 257                 if (!fl_range_port_dst_cmp(filter, key, mkey))
 258                         continue;
 259
 260                 if (!fl_range_port_src_cmp(filter, key, mkey))
 261                         continue;
 262
 263                 f = __fl_lookup(mask, mkey);
 264                 if (f)
 265                         return f;
 266         }
 267         return NULL;
 268 }
 269
 270 static struct cls_fl_filter *fl_lookup(struct fl_flow_mask *mask,
 271                                        struct fl_flow_key *mkey,
 272                                        struct fl_flow_key *key)
 273 {
 274         if ((mask->flags & TCA_FLOWER_MASK_FLAGS_RANGE))
 275                 return fl_lookup_range(mask, mkey, key);
 276
 277         return __fl_lookup(mask, mkey);
 278 }
 279
 280 static u16 fl_ct_info_to_flower_map[] = {
 281         [IP_CT_ESTABLISHED] =           TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 282                                         TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
 283         [IP_CT_RELATED] =               TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 284                                         TCA_FLOWER_KEY_CT_FLAGS_RELATED,
 285         [IP_CT_ESTABLISHED_REPLY] =     TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 286                                         TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED,
 287         [IP_CT_RELATED_REPLY] =         TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 288                                         TCA_FLOWER_KEY_CT_FLAGS_RELATED,
 289         [IP_CT_NEW] =                   TCA_FLOWER_KEY_CT_FLAGS_TRACKED |
 290                                         TCA_FLOWER_KEY_CT_FLAGS_NEW,
 291 };
 292
 293 static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
 294                        struct tcf_result *res)
 295 {
 296         struct cls_fl_head *head = rcu_dereference_bh(tp->root);
 297         struct fl_flow_key skb_mkey;
 298         struct fl_flow_key skb_key;
 299         struct fl_flow_mask *mask;
 300         struct cls_fl_filter *f;
 301
 302         list_for_each_entry_rcu(mask, &head->masks, list) {
 303                 fl_clear_masked_range(&skb_key, mask);
 304
 305                 skb_flow_dissect_meta(skb, &mask->dissector, &skb_key);
 306                 /* skb_flow_dissect() does not set n_proto in case an unknown
 307                  * protocol, so do it rather here.
 308                  */
 309                 skb_key.basic.n_proto = skb->protocol;
 310                 skb_flow_dissect_tunnel_info(skb, &mask->dissector, &skb_key);
 311                 skb_flow_dissect_ct(skb, &mask->dissector, &skb_key,
 312                                     fl_ct_info_to_flower_map,
 313                                     ARRAY_SIZE(fl_ct_info_to_flower_map));
 314                 skb_flow_dissect(skb, &mask->dissector, &skb_key, 0);
 315
 316                 fl_set_masked_key(&skb_mkey, &skb_key, mask);
 317
 318                 f = fl_lookup(mask, &skb_mkey, &skb_key);
 319                 if (f && !tc_skip_sw(f->flags)) {
 320                         *res = f->res;
 321                         return tcf_exts_exec(skb, &f->exts, res);
 322                 }
 323         }
 324         return -1;
 325 }
 326
 327 static int fl_init(struct tcf_proto *tp)
 328 {
 329         struct cls_fl_head *head;
 330
 331         head = kzalloc(sizeof(*head), GFP_KERNEL);
 332         if (!head)
 333                 return -ENOBUFS;
 334
 335         spin_lock_init(&head->masks_lock);
 336         INIT_LIST_HEAD_RCU(&head->masks);
 337         INIT_LIST_HEAD(&head->hw_filters);
 338         rcu_assign_pointer(tp->root, head);
 339         idr_init(&head->handle_idr);
 340
 341         return rhashtable_init(&head->ht, &mask_ht_params);
 342 }
 343
 344 static void fl_mask_free(struct fl_flow_mask *mask, bool mask_init_done)
 345 {
 346         /* temporary masks don't have their filters list and ht initialized */
 347         if (mask_init_done) {
 348                 WARN_ON(!list_empty(&mask->filters));
 349                 rhashtable_destroy(&mask->ht);
 350         }
 351         kfree(mask);
 352 }
 353
 354 static void fl_mask_free_work(struct work_struct *work)
 355 {
 356         struct fl_flow_mask *mask = container_of(to_rcu_work(work),
 357                                                  struct fl_flow_mask, rwork);
 358
 359         fl_mask_free(mask, true);
 360 }
 361
 362 static void fl_uninit_mask_free_work(struct work_struct *work)
 363 {
 364         struct fl_flow_mask *mask = container_of(to_rcu_work(work),
 365                                                  struct fl_flow_mask, rwork);
 366
 367         fl_mask_free(mask, false);
 368 }
 369
 370 static bool fl_mask_put(struct cls_fl_head *head, struct fl_flow_mask *mask)
 371 {
 372         if (!refcount_dec_and_test(&mask->refcnt))
 373                 return false;
 374
 375         rhashtable_remove_fast(&head->ht, &mask->ht_node, mask_ht_params);
 376
 377         spin_lock(&head->masks_lock);
 378         list_del_rcu(&mask->list);
 379         spin_unlock(&head->masks_lock);
 380
 381         tcf_queue_work(&mask->rwork, fl_mask_free_work);
 382
 383         return true;
 384 }
 385
 386 static struct cls_fl_head *fl_head_dereference(struct tcf_proto *tp)
 387 {
 388         /* Flower classifier only changes root pointer during init and destroy.
 389          * Users must obtain reference to tcf_proto instance before calling its
 390          * API, so tp->root pointer is protected from concurrent call to
 391          * fl_destroy() by reference counting.
 392          */
 393         return rcu_dereference_raw(tp->root);
 394 }
 395
 396 static void __fl_destroy_filter(struct cls_fl_filter *f)
 397 {
 398         tcf_exts_destroy(&f->exts);
 399         tcf_exts_put_net(&f->exts);
 400         kfree(f);
 401 }
 402
 403 static void fl_destroy_filter_work(struct work_struct *work)
 404 {
 405         struct cls_fl_filter *f = container_of(to_rcu_work(work),
 406                                         struct cls_fl_filter, rwork);
 407
 408         __fl_destroy_filter(f);
 409 }
 410
 411 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f,
 412                                  bool rtnl_held, struct netlink_ext_ack *extack)
 413 {
 414         struct tcf_block *block = tp->chain->block;
 415         struct flow_cls_offload cls_flower = {};
 416
 417         tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
 418         cls_flower.command = FLOW_CLS_DESTROY;
 419         cls_flower.cookie = (unsigned long) f;
 420
 421         tc_setup_cb_destroy(block, tp, TC_SETUP_CLSFLOWER, &cls_flower, false,
 422                             &f->flags, &f->in_hw_count, rtnl_held);
 423
 424 }
 425
 426 static int fl_hw_replace_filter(struct tcf_proto *tp,
 427                                 struct cls_fl_filter *f, bool rtnl_held,
 428                                 struct netlink_ext_ack *extack)
 429 {
 430         struct tcf_block *block = tp->chain->block;
 431         struct flow_cls_offload cls_flower = {};
 432         bool skip_sw = tc_skip_sw(f->flags);
 433         int err = 0;
 434
 435         cls_flower.rule = flow_rule_alloc(tcf_exts_num_actions(&f->exts));
 436         if (!cls_flower.rule)
 437                 return -ENOMEM;
 438
 439         tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, extack);
 440         cls_flower.command = FLOW_CLS_REPLACE;
 441         cls_flower.cookie = (unsigned long) f;
 442         cls_flower.rule->match.dissector = &f->mask->dissector;
 443         cls_flower.rule->match.mask = &f->mask->key;
 444         cls_flower.rule->match.key = &f->mkey;
 445         cls_flower.classid = f->res.classid;
 446
 447         err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,
 448                                    rtnl_held);
 449         if (err) {
 450                 kfree(cls_flower.rule);
 451                 if (skip_sw) {
 452                         NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
 453                         return err;
 454                 }
 455                 return 0;
 456         }
 457
 458         err = tc_setup_cb_add(block, tp, TC_SETUP_CLSFLOWER, &cls_flower,
 459                               skip_sw, &f->flags, &f->in_hw_count, rtnl_held);
 460         tc_cleanup_flow_action(&cls_flower.rule->action);
 461         kfree(cls_flower.rule);
 462
 463         if (err) {
 464                 fl_hw_destroy_filter(tp, f, rtnl_held, NULL);
 465                 return err;
 466         }
 467
 468         if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
 469                 return -EINVAL;
 470
 471         return 0;
 472 }
 473
 474 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f,
 475                                bool rtnl_held)
 476 {
 477         struct tcf_block *block = tp->chain->block;
 478         struct flow_cls_offload cls_flower = {};
 479
 480         tc_cls_common_offload_init(&cls_flower.common, tp, f->flags, NULL);
 481         cls_flower.command = FLOW_CLS_STATS;
 482         cls_flower.cookie = (unsigned long) f;
 483         cls_flower.classid = f->res.classid;
 484
 485         tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false,
 486                          rtnl_held);
 487
 488         tcf_exts_stats_update(&f->exts, cls_flower.stats.bytes,
 489                               cls_flower.stats.pkts,
 490                               cls_flower.stats.lastused);
 491 }
 492
 493 static void __fl_put(struct cls_fl_filter *f)
 494 {
 495         if (!refcount_dec_and_test(&f->refcnt))
 496                 return;
 497
 498         if (tcf_exts_get_net(&f->exts))
 499                 tcf_queue_work(&f->rwork, fl_destroy_filter_work);
 500         else
 501                 __fl_destroy_filter(f);
 502 }
 503
 504 static struct cls_fl_filter *__fl_get(struct cls_fl_head *head, u32 handle)
 505 {
 506         struct cls_fl_filter *f;
 507
 508         rcu_read_lock();
 509         f = idr_find(&head->handle_idr, handle);
 510         if (f && !refcount_inc_not_zero(&f->refcnt))
 511                 f = NULL;
 512         rcu_read_unlock();
 513
 514         return f;
 515 }
 516
 517 static int __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f,
 518                        bool *last, bool rtnl_held,
 519                        struct netlink_ext_ack *extack)
 520 {
 521         struct cls_fl_head *head = fl_head_dereference(tp);
 522
 523         *last = false;
 524
 525         spin_lock(&tp->lock);
 526         if (f->deleted) {
 527                 spin_unlock(&tp->lock);
 528                 return -ENOENT;
 529         }
 530
 531         f->deleted = true;
 532         rhashtable_remove_fast(&f->mask->ht, &f->ht_node,
 533                                f->mask->filter_ht_params);
 534         idr_remove(&head->handle_idr, f->handle);
 535         list_del_rcu(&f->list);
 536         spin_unlock(&tp->lock);
 537
 538         *last = fl_mask_put(head, f->mask);
 539         if (!tc_skip_hw(f->flags))
 540                 fl_hw_destroy_filter(tp, f, rtnl_held, extack);
 541         tcf_unbind_filter(tp, &f->res);
 542         __fl_put(f);
 543
 544         return 0;
 545 }
 546
 547 static void fl_destroy_sleepable(struct work_struct *work)
 548 {
 549         struct cls_fl_head *head = container_of(to_rcu_work(work),
 550                                                 struct cls_fl_head,
 551                                                 rwork);
 552
 553         rhashtable_destroy(&head->ht);
 554         kfree(head);
 555         module_put(THIS_MODULE);
 556 }
 557
 558 static void fl_destroy(struct tcf_proto *tp, bool rtnl_held,
 559                        struct netlink_ext_ack *extack)
 560 {
 561         struct cls_fl_head *head = fl_head_dereference(tp);
 562         struct fl_flow_mask *mask, *next_mask;
 563         struct cls_fl_filter *f, *next;
 564         bool last;
 565
 566         list_for_each_entry_safe(mask, next_mask, &head->masks, list) {
 567                 list_for_each_entry_safe(f, next, &mask->filters, list) {
 568                         __fl_delete(tp, f, &last, rtnl_held, extack);
 569                         if (last)
 570                                 break;
 571                 }
 572         }
 573         idr_destroy(&head->handle_idr);
 574
 575         __module_get(THIS_MODULE);
 576         tcf_queue_work(&head->rwork, fl_destroy_sleepable);
 577 }
 578
 579 static void fl_put(struct tcf_proto *tp, void *arg)
 580 {
 581         struct cls_fl_filter *f = arg;
 582
 583         __fl_put(f);
 584 }
 585
 586 static void *fl_get(struct tcf_proto *tp, u32 handle)
 587 {
 588         struct cls_fl_head *head = fl_head_dereference(tp);
 589
 590         return __fl_get(head, handle);
 591 }
 592
 593 static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
 594         [TCA_FLOWER_UNSPEC]             = { .type = NLA_UNSPEC },
 595         [TCA_FLOWER_CLASSID]            = { .type = NLA_U32 },
 596         [TCA_FLOWER_INDEV]              = { .type = NLA_STRING,
 597                                             .len = IFNAMSIZ },
 598         [TCA_FLOWER_KEY_ETH_DST]        = { .len = ETH_ALEN },
 599         [TCA_FLOWER_KEY_ETH_DST_MASK]   = { .len = ETH_ALEN },
 600         [TCA_FLOWER_KEY_ETH_SRC]        = { .len = ETH_ALEN },
 601         [TCA_FLOWER_KEY_ETH_SRC_MASK]   = { .len = ETH_ALEN },
 602         [TCA_FLOWER_KEY_ETH_TYPE]       = { .type = NLA_U16 },
 603         [TCA_FLOWER_KEY_IP_PROTO]       = { .type = NLA_U8 },
 604         [TCA_FLOWER_KEY_IPV4_SRC]       = { .type = NLA_U32 },
 605         [TCA_FLOWER_KEY_IPV4_SRC_MASK]  = { .type = NLA_U32 },
 606         [TCA_FLOWER_KEY_IPV4_DST]       = { .type = NLA_U32 },
 607         [TCA_FLOWER_KEY_IPV4_DST_MASK]  = { .type = NLA_U32 },
 608         [TCA_FLOWER_KEY_IPV6_SRC]       = { .len = sizeof(struct in6_addr) },
 609         [TCA_FLOWER_KEY_IPV6_SRC_MASK]  = { .len = sizeof(struct in6_addr) },
 610         [TCA_FLOWER_KEY_IPV6_DST]       = { .len = sizeof(struct in6_addr) },
 611         [TCA_FLOWER_KEY_IPV6_DST_MASK]  = { .len = sizeof(struct in6_addr) },
 612         [TCA_FLOWER_KEY_TCP_SRC]        = { .type = NLA_U16 },
 613         [TCA_FLOWER_KEY_TCP_DST]        = { .type = NLA_U16 },
 614         [TCA_FLOWER_KEY_UDP_SRC]        = { .type = NLA_U16 },
 615         [TCA_FLOWER_KEY_UDP_DST]        = { .type = NLA_U16 },
 616         [TCA_FLOWER_KEY_VLAN_ID]        = { .type = NLA_U16 },
 617         [TCA_FLOWER_KEY_VLAN_PRIO]      = { .type = NLA_U8 },
 618         [TCA_FLOWER_KEY_VLAN_ETH_TYPE]  = { .type = NLA_U16 },
 619         [TCA_FLOWER_KEY_ENC_KEY_ID]     = { .type = NLA_U32 },
 620         [TCA_FLOWER_KEY_ENC_IPV4_SRC]   = { .type = NLA_U32 },
 621         [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
 622         [TCA_FLOWER_KEY_ENC_IPV4_DST]   = { .type = NLA_U32 },
 623         [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
 624         [TCA_FLOWER_KEY_ENC_IPV6_SRC]   = { .len = sizeof(struct in6_addr) },
 625         [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
 626         [TCA_FLOWER_KEY_ENC_IPV6_DST]   = { .len = sizeof(struct in6_addr) },
 627         [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
 628         [TCA_FLOWER_KEY_TCP_SRC_MASK]   = { .type = NLA_U16 },
 629         [TCA_FLOWER_KEY_TCP_DST_MASK]   = { .type = NLA_U16 },
 630         [TCA_FLOWER_KEY_UDP_SRC_MASK]   = { .type = NLA_U16 },
 631         [TCA_FLOWER_KEY_UDP_DST_MASK]   = { .type = NLA_U16 },
 632         [TCA_FLOWER_KEY_SCTP_SRC_MASK]  = { .type = NLA_U16 },
 633         [TCA_FLOWER_KEY_SCTP_DST_MASK]  = { .type = NLA_U16 },
 634         [TCA_FLOWER_KEY_SCTP_SRC]       = { .type = NLA_U16 },
 635         [TCA_FLOWER_KEY_SCTP_DST]       = { .type = NLA_U16 },
 636         [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT]       = { .type = NLA_U16 },
 637         [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK]  = { .type = NLA_U16 },
 638         [TCA_FLOWER_KEY_ENC_UDP_DST_PORT]       = { .type = NLA_U16 },
 639         [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK]  = { .type = NLA_U16 },
 640         [TCA_FLOWER_KEY_FLAGS]          = { .type = NLA_U32 },
 641         [TCA_FLOWER_KEY_FLAGS_MASK]     = { .type = NLA_U32 },
 642         [TCA_FLOWER_KEY_ICMPV4_TYPE]    = { .type = NLA_U8 },
 643         [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
 644         [TCA_FLOWER_KEY_ICMPV4_CODE]    = { .type = NLA_U8 },
 645         [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
 646         [TCA_FLOWER_KEY_ICMPV6_TYPE]    = { .type = NLA_U8 },
 647         [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
 648         [TCA_FLOWER_KEY_ICMPV6_CODE]    = { .type = NLA_U8 },
 649         [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
 650         [TCA_FLOWER_KEY_ARP_SIP]        = { .type = NLA_U32 },
 651         [TCA_FLOWER_KEY_ARP_SIP_MASK]   = { .type = NLA_U32 },
 652         [TCA_FLOWER_KEY_ARP_TIP]        = { .type = NLA_U32 },
 653         [TCA_FLOWER_KEY_ARP_TIP_MASK]   = { .type = NLA_U32 },
 654         [TCA_FLOWER_KEY_ARP_OP]         = { .type = NLA_U8 },
 655         [TCA_FLOWER_KEY_ARP_OP_MASK]    = { .type = NLA_U8 },
 656         [TCA_FLOWER_KEY_ARP_SHA]        = { .len = ETH_ALEN },
 657         [TCA_FLOWER_KEY_ARP_SHA_MASK]   = { .len = ETH_ALEN },
 658         [TCA_FLOWER_KEY_ARP_THA]        = { .len = ETH_ALEN },
 659         [TCA_FLOWER_KEY_ARP_THA_MASK]   = { .len = ETH_ALEN },
 660         [TCA_FLOWER_KEY_MPLS_TTL]       = { .type = NLA_U8 },
 661         [TCA_FLOWER_KEY_MPLS_BOS]       = { .type = NLA_U8 },
 662         [TCA_FLOWER_KEY_MPLS_TC]        = { .type = NLA_U8 },
 663         [TCA_FLOWER_KEY_MPLS_LABEL]     = { .type = NLA_U32 },
 664         [TCA_FLOWER_KEY_TCP_FLAGS]      = { .type = NLA_U16 },
 665         [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
 666         [TCA_FLOWER_KEY_IP_TOS]         = { .type = NLA_U8 },
 667         [TCA_FLOWER_KEY_IP_TOS_MASK]    = { .type = NLA_U8 },
 668         [TCA_FLOWER_KEY_IP_TTL]         = { .type = NLA_U8 },
 669         [TCA_FLOWER_KEY_IP_TTL_MASK]    = { .type = NLA_U8 },
 670         [TCA_FLOWER_KEY_CVLAN_ID]       = { .type = NLA_U16 },
 671         [TCA_FLOWER_KEY_CVLAN_PRIO]     = { .type = NLA_U8 },
 672         [TCA_FLOWER_KEY_CVLAN_ETH_TYPE] = { .type = NLA_U16 },
 673         [TCA_FLOWER_KEY_ENC_IP_TOS]     = { .type = NLA_U8 },
 674         [TCA_FLOWER_KEY_ENC_IP_TOS_MASK] = { .type = NLA_U8 },
 675         [TCA_FLOWER_KEY_ENC_IP_TTL]      = { .type = NLA_U8 },
 676         [TCA_FLOWER_KEY_ENC_IP_TTL_MASK] = { .type = NLA_U8 },
 677         [TCA_FLOWER_KEY_ENC_OPTS]       = { .type = NLA_NESTED },
 678         [TCA_FLOWER_KEY_ENC_OPTS_MASK]  = { .type = NLA_NESTED },
 679         [TCA_FLOWER_KEY_CT_STATE]       = { .type = NLA_U16 },
 680         [TCA_FLOWER_KEY_CT_STATE_MASK]  = { .type = NLA_U16 },
 681         [TCA_FLOWER_KEY_CT_ZONE]        = { .type = NLA_U16 },
 682         [TCA_FLOWER_KEY_CT_ZONE_MASK]   = { .type = NLA_U16 },
 683         [TCA_FLOWER_KEY_CT_MARK]        = { .type = NLA_U32 },
 684         [TCA_FLOWER_KEY_CT_MARK_MASK]   = { .type = NLA_U32 },
 685         [TCA_FLOWER_KEY_CT_LABELS]      = { .type = NLA_BINARY,
 686                                             .len = 128 / BITS_PER_BYTE },
 687         [TCA_FLOWER_KEY_CT_LABELS_MASK] = { .type = NLA_BINARY,
 688                                             .len = 128 / BITS_PER_BYTE },
 689 };
 690
 691 static const struct nla_policy
 692 enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
 693         [TCA_FLOWER_KEY_ENC_OPTS_UNSPEC]        = {
 694                 .strict_start_type = TCA_FLOWER_KEY_ENC_OPTS_VXLAN },
 695         [TCA_FLOWER_KEY_ENC_OPTS_GENEVE]        = { .type = NLA_NESTED },
 696         [TCA_FLOWER_KEY_ENC_OPTS_VXLAN]         = { .type = NLA_NESTED },
 697         [TCA_FLOWER_KEY_ENC_OPTS_ERSPAN]        = { .type = NLA_NESTED },
 698 };
 699
 700 static const struct nla_policy
 701 geneve_opt_policy[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1] = {
 702         [TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]      = { .type = NLA_U16 },
 703         [TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]       = { .type = NLA_U8 },
 704         [TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]       = { .type = NLA_BINARY,
 705                                                        .len = 128 },
 706 };
 707
 708 static const struct nla_policy
 709 vxlan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1] = {
 710         [TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]         = { .type = NLA_U32 },
 711 };
 712
 713 static const struct nla_policy
 714 erspan_opt_policy[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
 715         [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]        = { .type = NLA_U8 },
 716         [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]      = { .type = NLA_U32 },
 717         [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]        = { .type = NLA_U8 },
 718         [TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]       = { .type = NLA_U8 },
 719 };
 720
 721 static void fl_set_key_val(struct nlattr **tb,
 722                            void *val, int val_type,
 723                            void *mask, int mask_type, int len)
 724 {
 725         if (!tb[val_type])
 726                 return;
 727         nla_memcpy(val, tb[val_type], len);
 728         if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
 729                 memset(mask, 0xff, len);
 730         else
 731                 nla_memcpy(mask, tb[mask_type], len);
 732 }
 733
 734 static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
 735                                  struct fl_flow_key *mask)
 736 {
 737         fl_set_key_val(tb, &key->tp_min.dst,
 738                        TCA_FLOWER_KEY_PORT_DST_MIN, &mask->tp_min.dst,
 739                        TCA_FLOWER_UNSPEC, sizeof(key->tp_min.dst));
 740         fl_set_key_val(tb, &key->tp_max.dst,
 741                        TCA_FLOWER_KEY_PORT_DST_MAX, &mask->tp_max.dst,
 742                        TCA_FLOWER_UNSPEC, sizeof(key->tp_max.dst));
 743         fl_set_key_val(tb, &key->tp_min.src,
 744                        TCA_FLOWER_KEY_PORT_SRC_MIN, &mask->tp_min.src,
 745                        TCA_FLOWER_UNSPEC, sizeof(key->tp_min.src));
 746         fl_set_key_val(tb, &key->tp_max.src,
 747                        TCA_FLOWER_KEY_PORT_SRC_MAX, &mask->tp_max.src,
 748                        TCA_FLOWER_UNSPEC, sizeof(key->tp_max.src));
 749
 750         if ((mask->tp_min.dst && mask->tp_max.dst &&
 751              htons(key->tp_max.dst) <= htons(key->tp_min.dst)) ||
 752              (mask->tp_min.src && mask->tp_max.src &&
 753               htons(key->tp_max.src) <= htons(key->tp_min.src)))
 754                 return -EINVAL;
 755
 756         return 0;
 757 }
 758
 759 static int fl_set_key_mpls(struct nlattr **tb,
 760                            struct flow_dissector_key_mpls *key_val,
 761                            struct flow_dissector_key_mpls *key_mask)
 762 {
 763         if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
 764                 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
 765                 key_mask->mpls_ttl = MPLS_TTL_MASK;
 766         }
 767         if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
 768                 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
 769
 770                 if (bos & ~MPLS_BOS_MASK)
 771                         return -EINVAL;
 772                 key_val->mpls_bos = bos;
 773                 key_mask->mpls_bos = MPLS_BOS_MASK;
 774         }
 775         if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
 776                 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
 777
 778                 if (tc & ~MPLS_TC_MASK)
 779                         return -EINVAL;
 780                 key_val->mpls_tc = tc;
 781                 key_mask->mpls_tc = MPLS_TC_MASK;
 782         }
 783         if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
 784                 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
 785
 786                 if (label & ~MPLS_LABEL_MASK)
 787                         return -EINVAL;
 788                 key_val->mpls_label = label;
 789                 key_mask->mpls_label = MPLS_LABEL_MASK;
 790         }
 791         return 0;
 792 }
 793
 794 static void fl_set_key_vlan(struct nlattr **tb,
 795                             __be16 ethertype,
 796                             int vlan_id_key, int vlan_prio_key,
 797                             struct flow_dissector_key_vlan *key_val,
 798                             struct flow_dissector_key_vlan *key_mask)
 799 {
 800 #define VLAN_PRIORITY_MASK      0x7
 801
 802         if (tb[vlan_id_key]) {
 803                 key_val->vlan_id =
 804                         nla_get_u16(tb[vlan_id_key]) & VLAN_VID_MASK;
 805                 key_mask->vlan_id = VLAN_VID_MASK;
 806         }
 807         if (tb[vlan_prio_key]) {
 808                 key_val->vlan_priority =
 809                         nla_get_u8(tb[vlan_prio_key]) &
 810                         VLAN_PRIORITY_MASK;
 811                 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
 812         }
 813         key_val->vlan_tpid = ethertype;
 814         key_mask->vlan_tpid = cpu_to_be16(~0);
 815 }
 816
 817 static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
 818                             u32 *dissector_key, u32 *dissector_mask,
 819                             u32 flower_flag_bit, u32 dissector_flag_bit)
 820 {
 821         if (flower_mask & flower_flag_bit) {
 822                 *dissector_mask |= dissector_flag_bit;
 823                 if (flower_key & flower_flag_bit)
 824                         *dissector_key |= dissector_flag_bit;
 825         }
 826 }
 827
 828 static int fl_set_key_flags(struct nlattr **tb,
 829                             u32 *flags_key, u32 *flags_mask)
 830 {
 831         u32 key, mask;
 832
 833         /* mask is mandatory for flags */
 834         if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
 835                 return -EINVAL;
 836
 837         key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
 838         mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
 839
 840         *flags_key  = 0;
 841         *flags_mask = 0;
 842
 843         fl_set_key_flag(key, mask, flags_key, flags_mask,
 844                         TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
 845         fl_set_key_flag(key, mask, flags_key, flags_mask,
 846                         TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
 847                         FLOW_DIS_FIRST_FRAG);
 848
 849         return 0;
 850 }
 851
 852 static void fl_set_key_ip(struct nlattr **tb, bool encap,
 853                           struct flow_dissector_key_ip *key,
 854                           struct flow_dissector_key_ip *mask)
 855 {
 856         int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
 857         int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
 858         int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
 859         int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
 860
 861         fl_set_key_val(tb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos));
 862         fl_set_key_val(tb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl));
 863 }
 864
 865 static int fl_set_geneve_opt(const struct nlattr *nla, struct fl_flow_key *key,
 866                              int depth, int option_len,
 867                              struct netlink_ext_ack *extack)
 868 {
 869         struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX + 1];
 870         struct nlattr *class = NULL, *type = NULL, *data = NULL;
 871         struct geneve_opt *opt;
 872         int err, data_len = 0;
 873
 874         if (option_len > sizeof(struct geneve_opt))
 875                 data_len = option_len - sizeof(struct geneve_opt);
 876
 877         opt = (struct geneve_opt *)&key->enc_opts.data[key->enc_opts.len];
 878         memset(opt, 0xff, option_len);
 879         opt->length = data_len / 4;
 880         opt->r1 = 0;
 881         opt->r2 = 0;
 882         opt->r3 = 0;
 883
 884         /* If no mask has been prodived we assume an exact match. */
 885         if (!depth)
 886                 return sizeof(struct geneve_opt) + data_len;
 887
 888         if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_GENEVE) {
 889                 NL_SET_ERR_MSG(extack, "Non-geneve option type for mask");
 890                 return -EINVAL;
 891         }
 892
 893         err = nla_parse_nested_deprecated(tb,
 894                                           TCA_FLOWER_KEY_ENC_OPT_GENEVE_MAX,
 895                                           nla, geneve_opt_policy, extack);
 896         if (err < 0)
 897                 return err;
 898
 899         /* We are not allowed to omit any of CLASS, TYPE or DATA
 900          * fields from the key.
 901          */
 902         if (!option_len &&
 903             (!tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS] ||
 904              !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE] ||
 905              !tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA])) {
 906                 NL_SET_ERR_MSG(extack, "Missing tunnel key geneve option class, type or data");
 907                 return -EINVAL;
 908         }
 909
 910         /* Omitting any of CLASS, TYPE or DATA fields is allowed
 911          * for the mask.
 912          */
 913         if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA]) {
 914                 int new_len = key->enc_opts.len;
 915
 916                 data = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA];
 917                 data_len = nla_len(data);
 918                 if (data_len < 4) {
 919                         NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is less than 4 bytes long");
 920                         return -ERANGE;
 921                 }
 922                 if (data_len % 4) {
 923                         NL_SET_ERR_MSG(extack, "Tunnel key geneve option data is not a multiple of 4 bytes long");
 924                         return -ERANGE;
 925                 }
 926
 927                 new_len += sizeof(struct geneve_opt) + data_len;
 928                 BUILD_BUG_ON(FLOW_DIS_TUN_OPTS_MAX != IP_TUNNEL_OPTS_MAX);
 929                 if (new_len > FLOW_DIS_TUN_OPTS_MAX) {
 930                         NL_SET_ERR_MSG(extack, "Tunnel options exceeds max size");
 931                         return -ERANGE;
 932                 }
 933                 opt->length = data_len / 4;
 934                 memcpy(opt->opt_data, nla_data(data), data_len);
 935         }
 936
 937         if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS]) {
 938                 class = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS];
 939                 opt->opt_class = nla_get_be16(class);
 940         }
 941
 942         if (tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE]) {
 943                 type = tb[TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE];
 944                 opt->type = nla_get_u8(type);
 945         }
 946
 947         return sizeof(struct geneve_opt) + data_len;
 948 }
 949
 950 static int fl_set_vxlan_opt(const struct nlattr *nla, struct fl_flow_key *key,
 951                             int depth, int option_len,
 952                             struct netlink_ext_ack *extack)
 953 {
 954         struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX + 1];
 955         struct vxlan_metadata *md;
 956         int err;
 957
 958         md = (struct vxlan_metadata *)&key->enc_opts.data[key->enc_opts.len];
 959         memset(md, 0xff, sizeof(*md));
 960
 961         if (!depth)
 962                 return sizeof(*md);
 963
 964         if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_VXLAN) {
 965                 NL_SET_ERR_MSG(extack, "Non-vxlan option type for mask");
 966                 return -EINVAL;
 967         }
 968
 969         err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_MAX, nla,
 970                                vxlan_opt_policy, extack);
 971         if (err < 0)
 972                 return err;
 973
 974         if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]) {
 975                 NL_SET_ERR_MSG(extack, "Missing tunnel key vxlan option gbp");
 976                 return -EINVAL;
 977         }
 978
 979         if (tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP])
 980                 md->gbp = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP]);
 981
 982         return sizeof(*md);
 983 }
 984
 985 static int fl_set_erspan_opt(const struct nlattr *nla, struct fl_flow_key *key,
 986                              int depth, int option_len,
 987                              struct netlink_ext_ack *extack)
 988 {
 989         struct nlattr *tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX + 1];
 990         struct erspan_metadata *md;
 991         int err;
 992
 993         md = (struct erspan_metadata *)&key->enc_opts.data[key->enc_opts.len];
 994         memset(md, 0xff, sizeof(*md));
 995         md->version = 1;
 996
 997         if (!depth)
 998                 return sizeof(*md);
 999
1000         if (nla_type(nla) != TCA_FLOWER_KEY_ENC_OPTS_ERSPAN) {
1001                 NL_SET_ERR_MSG(extack, "Non-erspan option type for mask");
1002                 return -EINVAL;
1003         }
1004
1005         err = nla_parse_nested(tb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX, nla,
1006                                erspan_opt_policy, extack);
1007         if (err < 0)
1008                 return err;
1009
1010         if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]) {
1011                 NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
1012                 return -EINVAL;
1013         }
1014
1015         if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER])
1016                 md->version = nla_get_u8(tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER]);
1017
1018         if (md->version == 1) {
1019                 if (!option_len && !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1020                         NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
1021                         return -EINVAL;
1022                 }
1023                 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX]) {
1024                         nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX];
1025                         md->u.index = nla_get_be32(nla);
1026                 }
1027         } else if (md->version == 2) {
1028                 if (!option_len && (!tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR] ||
1029                                     !tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID])) {
1030                         NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
1031                         return -EINVAL;
1032                 }
1033                 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR]) {
1034                         nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR];
1035                         md->u.md2.dir = nla_get_u8(nla);
1036                 }
1037                 if (tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID]) {
1038                         nla = tb[TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID];
1039                         set_hwid(&md->u.md2, nla_get_u8(nla));
1040                 }
1041         } else {
1042                 NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
1043                 return -EINVAL;
1044         }
1045
1046         return sizeof(*md);
1047 }
1048
1049 static int fl_set_enc_opt(struct nlattr **tb, struct fl_flow_key *key,
1050                           struct fl_flow_key *mask,
1051                           struct netlink_ext_ack *extack)
1052 {
1053         const struct nlattr *nla_enc_key, *nla_opt_key, *nla_opt_msk = NULL;
1054         int err, option_len, key_depth, msk_depth = 0;
1055
1056         err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS],
1057                                              TCA_FLOWER_KEY_ENC_OPTS_MAX,
1058                                              enc_opts_policy, extack);
1059         if (err)
1060                 return err;
1061
1062         nla_enc_key = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS]);
1063
1064         if (tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]) {
1065                 err = nla_validate_nested_deprecated(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK],
1066                                                      TCA_FLOWER_KEY_ENC_OPTS_MAX,
1067                                                      enc_opts_policy, extack);
1068                 if (err)
1069                         return err;
1070
1071                 nla_opt_msk = nla_data(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1072                 msk_depth = nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS_MASK]);
1073         }
1074
1075         nla_for_each_attr(nla_opt_key, nla_enc_key,
1076                           nla_len(tb[TCA_FLOWER_KEY_ENC_OPTS]), key_depth) {
1077                 switch (nla_type(nla_opt_key)) {
1078                 case TCA_FLOWER_KEY_ENC_OPTS_GENEVE:
1079                         if (key->enc_opts.dst_opt_type &&
1080                             key->enc_opts.dst_opt_type != TUNNEL_GENEVE_OPT) {
1081                                 NL_SET_ERR_MSG(extack, "Duplicate type for geneve options");
1082                                 return -EINVAL;
1083                         }
1084                         option_len = 0;
1085                         key->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1086                         option_len = fl_set_geneve_opt(nla_opt_key, key,
1087                                                        key_depth, option_len,
1088                                                        extack);
1089                         if (option_len < 0)
1090                                 return option_len;
1091
1092                         key->enc_opts.len += option_len;
1093                         /* At the same time we need to parse through the mask
1094                          * in order to verify exact and mask attribute lengths.
1095                          */
1096                         mask->enc_opts.dst_opt_type = TUNNEL_GENEVE_OPT;
1097                         option_len = fl_set_geneve_opt(nla_opt_msk, mask,
1098                                                        msk_depth, option_len,
1099                                                        extack);
1100                         if (option_len < 0)
1101                                 return option_len;
1102
1103                         mask->enc_opts.len += option_len;
1104                         if (key->enc_opts.len != mask->enc_opts.len) {
1105                                 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1106                                 return -EINVAL;
1107                         }
1108
1109                         if (msk_depth)
1110                                 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1111                         break;
1112                 case TCA_FLOWER_KEY_ENC_OPTS_VXLAN:
1113                         if (key->enc_opts.dst_opt_type) {
1114                                 NL_SET_ERR_MSG(extack, "Duplicate type for vxlan options");
1115                                 return -EINVAL;
1116                         }
1117                         option_len = 0;
1118                         key->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1119                         option_len = fl_set_vxlan_opt(nla_opt_key, key,
1120                                                       key_depth, option_len,
1121                                                       extack);
1122                         if (option_len < 0)
1123                                 return option_len;
1124
1125                         key->enc_opts.len += option_len;
1126                         /* At the same time we need to parse through the mask
1127                          * in order to verify exact and mask attribute lengths.
1128                          */
1129                         mask->enc_opts.dst_opt_type = TUNNEL_VXLAN_OPT;
1130                         option_len = fl_set_vxlan_opt(nla_opt_msk, mask,
1131                                                       msk_depth, option_len,
1132                                                       extack);
1133                         if (option_len < 0)
1134                                 return option_len;
1135
1136                         mask->enc_opts.len += option_len;
1137                         if (key->enc_opts.len != mask->enc_opts.len) {
1138                                 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1139                                 return -EINVAL;
1140                         }
1141
1142                         if (msk_depth)
1143                                 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1144                         break;
1145                 case TCA_FLOWER_KEY_ENC_OPTS_ERSPAN:
1146                         if (key->enc_opts.dst_opt_type) {
1147                                 NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
1148                                 return -EINVAL;
1149                         }
1150                         option_len = 0;
1151                         key->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1152                         option_len = fl_set_erspan_opt(nla_opt_key, key,
1153                                                        key_depth, option_len,
1154                                                        extack);
1155                         if (option_len < 0)
1156                                 return option_len;
1157
1158                         key->enc_opts.len += option_len;
1159                         /* At the same time we need to parse through the mask
1160                          * in order to verify exact and mask attribute lengths.
1161                          */
1162                         mask->enc_opts.dst_opt_type = TUNNEL_ERSPAN_OPT;
1163                         option_len = fl_set_erspan_opt(nla_opt_msk, mask,
1164                                                        msk_depth, option_len,
1165                                                        extack);
1166                         if (option_len < 0)
1167                                 return option_len;
1168
1169                         mask->enc_opts.len += option_len;
1170                         if (key->enc_opts.len != mask->enc_opts.len) {
1171                                 NL_SET_ERR_MSG(extack, "Key and mask miss aligned");
1172                                 return -EINVAL;
1173                         }
1174
1175                         if (msk_depth)
1176                                 nla_opt_msk = nla_next(nla_opt_msk, &msk_depth);
1177                         break;
1178                 default:
1179                         NL_SET_ERR_MSG(extack, "Unknown tunnel option type");
1180                         return -EINVAL;
1181                 }
1182         }
1183
1184         return 0;
1185 }
1186
1187 static int fl_set_key_ct(struct nlattr **tb,
1188                          struct flow_dissector_key_ct *key,
1189                          struct flow_dissector_key_ct *mask,
1190                          struct netlink_ext_ack *extack)
1191 {
1192         if (tb[TCA_FLOWER_KEY_CT_STATE]) {
1193                 if (!IS_ENABLED(CONFIG_NF_CONNTRACK)) {
1194                         NL_SET_ERR_MSG(extack, "Conntrack isn't enabled");
1195                         return -EOPNOTSUPP;
1196                 }
1197                 fl_set_key_val(tb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
1198                                &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
1199                                sizeof(key->ct_state));
1200         }
1201         if (tb[TCA_FLOWER_KEY_CT_ZONE]) {
1202                 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES)) {
1203                         NL_SET_ERR_MSG(extack, "Conntrack zones isn't enabled");
1204                         return -EOPNOTSUPP;
1205                 }
1206                 fl_set_key_val(tb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
1207                                &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
1208                                sizeof(key->ct_zone));
1209         }
1210         if (tb[TCA_FLOWER_KEY_CT_MARK]) {
1211                 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)) {
1212                         NL_SET_ERR_MSG(extack, "Conntrack mark isn't enabled");
1213                         return -EOPNOTSUPP;
1214                 }
1215                 fl_set_key_val(tb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
1216                                &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
1217                                sizeof(key->ct_mark));
1218         }
1219         if (tb[TCA_FLOWER_KEY_CT_LABELS]) {
1220                 if (!IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS)) {
1221                         NL_SET_ERR_MSG(extack, "Conntrack labels aren't enabled");
1222                         return -EOPNOTSUPP;
1223                 }
1224                 fl_set_key_val(tb, key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
1225                                mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
1226                                sizeof(key->ct_labels));
1227         }
1228
1229         return 0;
1230 }
1231
1232 static int fl_set_key(struct net *net, struct nlattr **tb,
1233                       struct fl_flow_key *key, struct fl_flow_key *mask,
1234                       struct netlink_ext_ack *extack)
1235 {
1236         __be16 ethertype;
1237         int ret = 0;
1238
1239         if (tb[TCA_FLOWER_INDEV]) {
1240                 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV], extack);
1241                 if (err < 0)
1242                         return err;
1243                 key->meta.ingress_ifindex = err;
1244                 mask->meta.ingress_ifindex = 0xffffffff;
1245         }
1246
1247         fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1248                        mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1249                        sizeof(key->eth.dst));
1250         fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1251                        mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1252                        sizeof(key->eth.src));
1253
1254         if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
1255                 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
1256
1257                 if (eth_type_vlan(ethertype)) {
1258                         fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID,
1259                                         TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan,
1260                                         &mask->vlan);
1261
1262                         if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) {
1263                                 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]);
1264                                 if (eth_type_vlan(ethertype)) {
1265                                         fl_set_key_vlan(tb, ethertype,
1266                                                         TCA_FLOWER_KEY_CVLAN_ID,
1267                                                         TCA_FLOWER_KEY_CVLAN_PRIO,
1268                                                         &key->cvlan, &mask->cvlan);
1269                                         fl_set_key_val(tb, &key->basic.n_proto,
1270                                                        TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
1271                                                        &mask->basic.n_proto,
1272                                                        TCA_FLOWER_UNSPEC,
1273                                                        sizeof(key->basic.n_proto));
1274                                 } else {
1275                                         key->basic.n_proto = ethertype;
1276                                         mask->basic.n_proto = cpu_to_be16(~0);
1277                                 }
1278                         }
1279                 } else {
1280                         key->basic.n_proto = ethertype;
1281                         mask->basic.n_proto = cpu_to_be16(~0);
1282                 }
1283         }
1284
1285         if (key->basic.n_proto == htons(ETH_P_IP) ||
1286             key->basic.n_proto == htons(ETH_P_IPV6)) {
1287                 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
1288                                &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
1289                                sizeof(key->basic.ip_proto));
1290                 fl_set_key_ip(tb, false, &key->ip, &mask->ip);
1291         }
1292
1293         if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
1294                 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1295                 mask->control.addr_type = ~0;
1296                 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1297                                &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1298                                sizeof(key->ipv4.src));
1299                 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1300                                &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1301                                sizeof(key->ipv4.dst));
1302         } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
1303                 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1304                 mask->control.addr_type = ~0;
1305                 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1306                                &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1307                                sizeof(key->ipv6.src));
1308                 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1309                                &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1310                                sizeof(key->ipv6.dst));
1311         }
1312
1313         if (key->basic.ip_proto == IPPROTO_TCP) {
1314                 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
1315                                &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
1316                                sizeof(key->tp.src));
1317                 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
1318                                &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
1319                                sizeof(key->tp.dst));
1320                 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1321                                &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1322                                sizeof(key->tcp.flags));
1323         } else if (key->basic.ip_proto == IPPROTO_UDP) {
1324                 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
1325                                &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
1326                                sizeof(key->tp.src));
1327                 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
1328                                &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
1329                                sizeof(key->tp.dst));
1330         } else if (key->basic.ip_proto == IPPROTO_SCTP) {
1331                 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1332                                &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1333                                sizeof(key->tp.src));
1334                 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1335                                &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
1336                                sizeof(key->tp.dst));
1337         } else if (key->basic.n_proto == htons(ETH_P_IP) &&
1338                    key->basic.ip_proto == IPPROTO_ICMP) {
1339                 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
1340                                &mask->icmp.type,
1341                                TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1342                                sizeof(key->icmp.type));
1343                 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
1344                                &mask->icmp.code,
1345                                TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1346                                sizeof(key->icmp.code));
1347         } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1348                    key->basic.ip_proto == IPPROTO_ICMPV6) {
1349                 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
1350                                &mask->icmp.type,
1351                                TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1352                                sizeof(key->icmp.type));
1353                 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
1354                                &mask->icmp.code,
1355                                TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1356                                sizeof(key->icmp.code));
1357         } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
1358                    key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1359                 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
1360                 if (ret)
1361                         return ret;
1362         } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
1363                    key->basic.n_proto == htons(ETH_P_RARP)) {
1364                 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
1365                                &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
1366                                sizeof(key->arp.sip));
1367                 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
1368                                &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
1369                                sizeof(key->arp.tip));
1370                 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
1371                                &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
1372                                sizeof(key->arp.op));
1373                 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1374                                mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1375                                sizeof(key->arp.sha));
1376                 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1377                                mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1378                                sizeof(key->arp.tha));
1379         }
1380
1381         if (key->basic.ip_proto == IPPROTO_TCP ||
1382             key->basic.ip_proto == IPPROTO_UDP ||
1383             key->basic.ip_proto == IPPROTO_SCTP) {
1384                 ret = fl_set_key_port_range(tb, key, mask);
1385                 if (ret)
1386                         return ret;
1387         }
1388
1389         if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
1390             tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
1391                 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
1392                 mask->enc_control.addr_type = ~0;
1393                 fl_set_key_val(tb, &key->enc_ipv4.src,
1394                                TCA_FLOWER_KEY_ENC_IPV4_SRC,
1395                                &mask->enc_ipv4.src,
1396                                TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1397                                sizeof(key->enc_ipv4.src));
1398                 fl_set_key_val(tb, &key->enc_ipv4.dst,
1399                                TCA_FLOWER_KEY_ENC_IPV4_DST,
1400                                &mask->enc_ipv4.dst,
1401                                TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1402                                sizeof(key->enc_ipv4.dst));
1403         }
1404
1405         if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
1406             tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
1407                 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
1408                 mask->enc_control.addr_type = ~0;
1409                 fl_set_key_val(tb, &key->enc_ipv6.src,
1410                                TCA_FLOWER_KEY_ENC_IPV6_SRC,
1411                                &mask->enc_ipv6.src,
1412                                TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1413                                sizeof(key->enc_ipv6.src));
1414                 fl_set_key_val(tb, &key->enc_ipv6.dst,
1415                                TCA_FLOWER_KEY_ENC_IPV6_DST,
1416                                &mask->enc_ipv6.dst,
1417                                TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1418                                sizeof(key->enc_ipv6.dst));
1419         }
1420
1421         fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
1422                        &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
1423                        sizeof(key->enc_key_id.keyid));
1424
1425         fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1426                        &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1427                        sizeof(key->enc_tp.src));
1428
1429         fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1430                        &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1431                        sizeof(key->enc_tp.dst));
1432
1433         fl_set_key_ip(tb, true, &key->enc_ip, &mask->enc_ip);
1434
1435         if (tb[TCA_FLOWER_KEY_ENC_OPTS]) {
1436                 ret = fl_set_enc_opt(tb, key, mask, extack);
1437                 if (ret)
1438                         return ret;
1439         }
1440
1441         ret = fl_set_key_ct(tb, &key->ct, &mask->ct, extack);
1442         if (ret)
1443                 return ret;
1444
1445         if (tb[TCA_FLOWER_KEY_FLAGS])
1446                 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
1447
1448         return ret;
1449 }
1450
1451 static void fl_mask_copy(struct fl_flow_mask *dst,
1452                          struct fl_flow_mask *src)
1453 {
1454         const void *psrc = fl_key_get_start(&src->key, src);
1455         void *pdst = fl_key_get_start(&dst->key, src);
1456
1457         memcpy(pdst, psrc, fl_mask_range(src));
1458         dst->range = src->range;
1459 }
1460
1461 static const struct rhashtable_params fl_ht_params = {
1462         .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
1463         .head_offset = offsetof(struct cls_fl_filter, ht_node),
1464         .automatic_shrinking = true,
1465 };
1466
1467 static int fl_init_mask_hashtable(struct fl_flow_mask *mask)
1468 {
1469         mask->filter_ht_params = fl_ht_params;
1470         mask->filter_ht_params.key_len = fl_mask_range(mask);
1471         mask->filter_ht_params.key_offset += mask->range.start;
1472
1473         return rhashtable_init(&mask->ht, &mask->filter_ht_params);
1474 }
1475
1476 #define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
1477 #define FL_KEY_MEMBER_SIZE(member) FIELD_SIZEOF(struct fl_flow_key, member)
1478
1479 #define FL_KEY_IS_MASKED(mask, member)                                          \
1480         memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member),               \
1481                    0, FL_KEY_MEMBER_SIZE(member))                               \
1482
1483 #define FL_KEY_SET(keys, cnt, id, member)                                       \
1484         do {                                                                    \
1485                 keys[cnt].key_id = id;                                          \
1486                 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member);                \
1487                 cnt++;                                                          \
1488         } while(0);
1489
1490 #define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member)                       \
1491         do {                                                                    \
1492                 if (FL_KEY_IS_MASKED(mask, member))                             \
1493                         FL_KEY_SET(keys, cnt, id, member);                      \
1494         } while(0);
1495
1496 static void fl_init_dissector(struct flow_dissector *dissector,
1497                               struct fl_flow_key *mask)
1498 {
1499         struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
1500         size_t cnt = 0;
1501
1502         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1503                              FLOW_DISSECTOR_KEY_META, meta);
1504         FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
1505         FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
1506         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1507                              FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
1508         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1509                              FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
1510         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1511                              FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
1512         if (FL_KEY_IS_MASKED(mask, tp) ||
1513             FL_KEY_IS_MASKED(mask, tp_min) || FL_KEY_IS_MASKED(mask, tp_max))
1514                 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_PORTS, tp);
1515         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1516                              FLOW_DISSECTOR_KEY_IP, ip);
1517         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1518                              FLOW_DISSECTOR_KEY_TCP, tcp);
1519         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1520                              FLOW_DISSECTOR_KEY_ICMP, icmp);
1521         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1522                              FLOW_DISSECTOR_KEY_ARP, arp);
1523         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1524                              FLOW_DISSECTOR_KEY_MPLS, mpls);
1525         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1526                              FLOW_DISSECTOR_KEY_VLAN, vlan);
1527         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1528                              FLOW_DISSECTOR_KEY_CVLAN, cvlan);
1529         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1530                              FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
1531         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1532                              FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
1533         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1534                              FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
1535         if (FL_KEY_IS_MASKED(mask, enc_ipv4) ||
1536             FL_KEY_IS_MASKED(mask, enc_ipv6))
1537                 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
1538                            enc_control);
1539         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1540                              FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
1541         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1542                              FLOW_DISSECTOR_KEY_ENC_IP, enc_ip);
1543         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1544                              FLOW_DISSECTOR_KEY_ENC_OPTS, enc_opts);
1545         FL_KEY_SET_IF_MASKED(mask, keys, cnt,
1546                              FLOW_DISSECTOR_KEY_CT, ct);
1547
1548         skb_flow_dissector_init(dissector, keys, cnt);
1549 }
1550
1551 static struct fl_flow_mask *fl_create_new_mask(struct cls_fl_head *head,
1552                                                struct fl_flow_mask *mask)
1553 {
1554         struct fl_flow_mask *newmask;
1555         int err;
1556
1557         newmask = kzalloc(sizeof(*newmask), GFP_KERNEL);
1558         if (!newmask)
1559                 return ERR_PTR(-ENOMEM);
1560
1561         fl_mask_copy(newmask, mask);
1562
1563         if ((newmask->key.tp_min.dst && newmask->key.tp_max.dst) ||
1564             (newmask->key.tp_min.src && newmask->key.tp_max.src))
1565                 newmask->flags |= TCA_FLOWER_MASK_FLAGS_RANGE;
1566
1567         err = fl_init_mask_hashtable(newmask);
1568         if (err)
1569                 goto errout_free;
1570
1571         fl_init_dissector(&newmask->dissector, &newmask->key);
1572
1573         INIT_LIST_HEAD_RCU(&newmask->filters);
1574
1575         refcount_set(&newmask->refcnt, 1);
1576         err = rhashtable_replace_fast(&head->ht, &mask->ht_node,
1577                                       &newmask->ht_node, mask_ht_params);
1578         if (err)
1579                 goto errout_destroy;
1580
1581         spin_lock(&head->masks_lock);
1582         list_add_tail_rcu(&newmask->list, &head->masks);
1583         spin_unlock(&head->masks_lock);
1584
1585         return newmask;
1586
1587 errout_destroy:
1588         rhashtable_destroy(&newmask->ht);
1589 errout_free:
1590         kfree(newmask);
1591
1592         return ERR_PTR(err);
1593 }
1594
1595 static int fl_check_assign_mask(struct cls_fl_head *head,
1596                                 struct cls_fl_filter *fnew,
1597                                 struct cls_fl_filter *fold,
1598                                 struct fl_flow_mask *mask)
1599 {
1600         struct fl_flow_mask *newmask;
1601         int ret = 0;
1602
1603         rcu_read_lock();
1604
1605         /* Insert mask as temporary node to prevent concurrent creation of mask
1606          * with same key. Any concurrent lookups with same key will return
1607          * -EAGAIN because mask's refcnt is zero.
1608          */
1609         fnew->mask = rhashtable_lookup_get_insert_fast(&head->ht,
1610                                                        &mask->ht_node,
1611                                                        mask_ht_params);
1612         if (!fnew->mask) {
1613                 rcu_read_unlock();
1614
1615                 if (fold) {
1616                         ret = -EINVAL;
1617                         goto errout_cleanup;
1618                 }
1619
1620                 newmask = fl_create_new_mask(head, mask);
1621                 if (IS_ERR(newmask)) {
1622                         ret = PTR_ERR(newmask);
1623                         goto errout_cleanup;
1624                 }
1625
1626                 fnew->mask = newmask;
1627                 return 0;
1628         } else if (IS_ERR(fnew->mask)) {
1629                 ret = PTR_ERR(fnew->mask);
1630         } else if (fold && fold->mask != fnew->mask) {
1631                 ret = -EINVAL;
1632         } else if (!refcount_inc_not_zero(&fnew->mask->refcnt)) {
1633                 /* Mask was deleted concurrently, try again */
1634                 ret = -EAGAIN;
1635         }
1636         rcu_read_unlock();
1637         return ret;
1638
1639 errout_cleanup:
1640         rhashtable_remove_fast(&head->ht, &mask->ht_node,
1641                                mask_ht_params);
1642         return ret;
1643 }
1644
1645 static int fl_set_parms(struct net *net, struct tcf_proto *tp,
1646                         struct cls_fl_filter *f, struct fl_flow_mask *mask,
1647                         unsigned long base, struct nlattr **tb,
1648                         struct nlattr *est, bool ovr,
1649                         struct fl_flow_tmplt *tmplt, bool rtnl_held,
1650                         struct netlink_ext_ack *extack)
1651 {
1652         int err;
1653
1654         err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, rtnl_held,
1655                                 extack);
1656         if (err < 0)
1657                 return err;
1658
1659         if (tb[TCA_FLOWER_CLASSID]) {
1660                 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
1661                 if (!rtnl_held)
1662                         rtnl_lock();
1663                 tcf_bind_filter(tp, &f->res, base);
1664                 if (!rtnl_held)
1665                         rtnl_unlock();
1666         }
1667
1668         err = fl_set_key(net, tb, &f->key, &mask->key, extack);
1669         if (err)
1670                 return err;
1671
1672         fl_mask_update_range(mask);
1673         fl_set_masked_key(&f->mkey, &f->key, mask);
1674
1675         if (!fl_mask_fits_tmplt(tmplt, mask)) {
1676                 NL_SET_ERR_MSG_MOD(extack, "Mask does not fit the template");
1677                 return -EINVAL;
1678         }
1679
1680         return 0;
1681 }
1682
1683 static int fl_ht_insert_unique(struct cls_fl_filter *fnew,
1684                                struct cls_fl_filter *fold,
1685                                bool *in_ht)
1686 {
1687         struct fl_flow_mask *mask = fnew->mask;
1688         int err;
1689
1690         err = rhashtable_lookup_insert_fast(&mask->ht,
1691                                             &fnew->ht_node,
1692                                             mask->filter_ht_params);
1693         if (err) {
1694                 *in_ht = false;
1695                 /* It is okay if filter with same key exists when
1696                  * overwriting.
1697                  */
1698                 return fold && err == -EEXIST ? 0 : err;
1699         }
1700
1701         *in_ht = true;
1702         return 0;
1703 }
1704
1705 static int fl_change(struct net *net, struct sk_buff *in_skb,
1706                      struct tcf_proto *tp, unsigned long base,
1707                      u32 handle, struct nlattr **tca,
1708                      void **arg, bool ovr, bool rtnl_held,
1709                      struct netlink_ext_ack *extack)
1710 {
1711         struct cls_fl_head *head = fl_head_dereference(tp);
1712         struct cls_fl_filter *fold = *arg;
1713         struct cls_fl_filter *fnew;
1714         struct fl_flow_mask *mask;
1715         struct nlattr **tb;
1716         bool in_ht;
1717         int err;
1718
1719         if (!tca[TCA_OPTIONS]) {
1720                 err = -EINVAL;
1721                 goto errout_fold;
1722         }
1723
1724         mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
1725         if (!mask) {
1726                 err = -ENOBUFS;
1727                 goto errout_fold;
1728         }
1729
1730         tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
1731         if (!tb) {
1732                 err = -ENOBUFS;
1733                 goto errout_mask_alloc;
1734         }
1735
1736         err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
1737                                           tca[TCA_OPTIONS], fl_policy, NULL);
1738         if (err < 0)
1739                 goto errout_tb;
1740
1741         if (fold && handle && fold->handle != handle) {
1742                 err = -EINVAL;
1743                 goto errout_tb;
1744         }
1745
1746         fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
1747         if (!fnew) {
1748                 err = -ENOBUFS;
1749                 goto errout_tb;
1750         }
1751         INIT_LIST_HEAD(&fnew->hw_list);
1752         refcount_set(&fnew->refcnt, 1);
1753
1754         err = tcf_exts_init(&fnew->exts, net, TCA_FLOWER_ACT, 0);
1755         if (err < 0)
1756                 goto errout;
1757
1758         if (tb[TCA_FLOWER_FLAGS]) {
1759                 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
1760
1761                 if (!tc_flags_valid(fnew->flags)) {
1762                         err = -EINVAL;
1763                         goto errout;
1764                 }
1765         }
1766
1767         err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
1768                            tp->chain->tmplt_priv, rtnl_held, extack);
1769         if (err)
1770                 goto errout;
1771
1772         err = fl_check_assign_mask(head, fnew, fold, mask);
1773         if (err)
1774                 goto errout;
1775
1776         err = fl_ht_insert_unique(fnew, fold, &in_ht);
1777         if (err)
1778                 goto errout_mask;
1779
1780         if (!tc_skip_hw(fnew->flags)) {
1781                 err = fl_hw_replace_filter(tp, fnew, rtnl_held, extack);
1782                 if (err)
1783                         goto errout_ht;
1784         }
1785
1786         if (!tc_in_hw(fnew->flags))
1787                 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
1788
1789         spin_lock(&tp->lock);
1790
1791         /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
1792          * proto again or create new one, if necessary.
1793          */
1794         if (tp->deleting) {
1795                 err = -EAGAIN;
1796                 goto errout_hw;
1797         }
1798
1799         if (fold) {
1800                 /* Fold filter was deleted concurrently. Retry lookup. */
1801                 if (fold->deleted) {
1802                         err = -EAGAIN;
1803                         goto errout_hw;
1804                 }
1805
1806                 fnew->handle = handle;
1807
1808                 if (!in_ht) {
1809                         struct rhashtable_params params =
1810                                 fnew->mask->filter_ht_params;
1811
1812                         err = rhashtable_insert_fast(&fnew->mask->ht,
1813                                                      &fnew->ht_node,
1814                                                      params);
1815                         if (err)
1816                                 goto errout_hw;
1817                         in_ht = true;
1818                 }
1819
1820                 refcount_inc(&fnew->refcnt);
1821                 rhashtable_remove_fast(&fold->mask->ht,
1822                                        &fold->ht_node,
1823                                        fold->mask->filter_ht_params);
1824                 idr_replace(&head->handle_idr, fnew, fnew->handle);
1825                 list_replace_rcu(&fold->list, &fnew->list);
1826                 fold->deleted = true;
1827
1828                 spin_unlock(&tp->lock);
1829
1830                 fl_mask_put(head, fold->mask);
1831                 if (!tc_skip_hw(fold->flags))
1832                         fl_hw_destroy_filter(tp, fold, rtnl_held, NULL);
1833                 tcf_unbind_filter(tp, &fold->res);
1834                 /* Caller holds reference to fold, so refcnt is always > 0
1835                  * after this.
1836                  */
1837                 refcount_dec(&fold->refcnt);
1838                 __fl_put(fold);
1839         } else {
1840                 if (handle) {
1841                         /* user specifies a handle and it doesn't exist */
1842                         err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1843                                             handle, GFP_ATOMIC);
1844
1845                         /* Filter with specified handle was concurrently
1846                          * inserted after initial check in cls_api. This is not
1847                          * necessarily an error if NLM_F_EXCL is not set in
1848                          * message flags. Returning EAGAIN will cause cls_api to
1849                          * try to update concurrently inserted rule.
1850                          */
1851                         if (err == -ENOSPC)
1852                                 err = -EAGAIN;
1853                 } else {
1854                         handle = 1;
1855                         err = idr_alloc_u32(&head->handle_idr, fnew, &handle,
1856                                             INT_MAX, GFP_ATOMIC);
1857                 }
1858                 if (err)
1859                         goto errout_hw;
1860
1861                 refcount_inc(&fnew->refcnt);
1862                 fnew->handle = handle;
1863                 list_add_tail_rcu(&fnew->list, &fnew->mask->filters);
1864                 spin_unlock(&tp->lock);
1865         }
1866
1867         *arg = fnew;
1868
1869         kfree(tb);
1870         tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
1871         return 0;
1872
1873 errout_ht:
1874         spin_lock(&tp->lock);
1875 errout_hw:
1876         fnew->deleted = true;
1877         spin_unlock(&tp->lock);
1878         if (!tc_skip_hw(fnew->flags))
1879                 fl_hw_destroy_filter(tp, fnew, rtnl_held, NULL);
1880         if (in_ht)
1881                 rhashtable_remove_fast(&fnew->mask->ht, &fnew->ht_node,
1882                                        fnew->mask->filter_ht_params);
1883 errout_mask:
1884         fl_mask_put(head, fnew->mask);
1885 errout:
1886         __fl_put(fnew);
1887 errout_tb:
1888         kfree(tb);
1889 errout_mask_alloc:
1890         tcf_queue_work(&mask->rwork, fl_uninit_mask_free_work);
1891 errout_fold:
1892         if (fold)
1893                 __fl_put(fold);
1894         return err;
1895 }
1896
1897 static int fl_delete(struct tcf_proto *tp, void *arg, bool *last,
1898                      bool rtnl_held, struct netlink_ext_ack *extack)
1899 {
1900         struct cls_fl_head *head = fl_head_dereference(tp);
1901         struct cls_fl_filter *f = arg;
1902         bool last_on_mask;
1903         int err = 0;
1904
1905         err = __fl_delete(tp, f, &last_on_mask, rtnl_held, extack);
1906         *last = list_empty(&head->masks);
1907         __fl_put(f);
1908
1909         return err;
1910 }
1911
1912 static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg,
1913                     bool rtnl_held)
1914 {
1915         struct cls_fl_head *head = fl_head_dereference(tp);
1916         unsigned long id = arg->cookie, tmp;
1917         struct cls_fl_filter *f;
1918
1919         arg->count = arg->skip;
1920
1921         idr_for_each_entry_continue_ul(&head->handle_idr, f, tmp, id) {
1922                 /* don't return filters that are being deleted */
1923                 if (!refcount_inc_not_zero(&f->refcnt))
1924                         continue;
1925                 if (arg->fn(tp, f, arg) < 0) {
1926                         __fl_put(f);
1927                         arg->stop = 1;
1928                         break;
1929                 }
1930                 __fl_put(f);
1931                 arg->count++;
1932         }
1933         arg->cookie = id;
1934 }
1935
1936 static struct cls_fl_filter *
1937 fl_get_next_hw_filter(struct tcf_proto *tp, struct cls_fl_filter *f, bool add)
1938 {
1939         struct cls_fl_head *head = fl_head_dereference(tp);
1940
1941         spin_lock(&tp->lock);
1942         if (list_empty(&head->hw_filters)) {
1943                 spin_unlock(&tp->lock);
1944                 return NULL;
1945         }
1946
1947         if (!f)
1948                 f = list_entry(&head->hw_filters, struct cls_fl_filter,
1949                                hw_list);
1950         list_for_each_entry_continue(f, &head->hw_filters, hw_list) {
1951                 if (!(add && f->deleted) && refcount_inc_not_zero(&f->refcnt)) {
1952                         spin_unlock(&tp->lock);
1953                         return f;
1954                 }
1955         }
1956
1957         spin_unlock(&tp->lock);
1958         return NULL;
1959 }
1960
1961 static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb,
1962                         void *cb_priv, struct netlink_ext_ack *extack)
1963 {
1964         struct tcf_block *block = tp->chain->block;
1965         struct flow_cls_offload cls_flower = {};
1966         struct cls_fl_filter *f = NULL;
1967         int err;
1968
1969         /* hw_filters list can only be changed by hw offload functions after
1970          * obtaining rtnl lock. Make sure it is not changed while reoffload is
1971          * iterating it.
1972          */
1973         ASSERT_RTNL();
1974
1975         while ((f = fl_get_next_hw_filter(tp, f, add))) {
1976                 cls_flower.rule =
1977                         flow_rule_alloc(tcf_exts_num_actions(&f->exts));
1978                 if (!cls_flower.rule) {
1979                         __fl_put(f);
1980                         return -ENOMEM;
1981                 }
1982
1983                 tc_cls_common_offload_init(&cls_flower.common, tp, f->flags,
1984                                            extack);
1985                 cls_flower.command = add ?
1986                         FLOW_CLS_REPLACE : FLOW_CLS_DESTROY;
1987                 cls_flower.cookie = (unsigned long)f;
1988                 cls_flower.rule->match.dissector = &f->mask->dissector;
1989                 cls_flower.rule->match.mask = &f->mask->key;
1990                 cls_flower.rule->match.key = &f->mkey;
1991
1992                 err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,
1993                                            true);
1994                 if (err) {
1995                         kfree(cls_flower.rule);
1996                         if (tc_skip_sw(f->flags)) {
1997                                 NL_SET_ERR_MSG_MOD(extack, "Failed to setup flow action");
1998                                 __fl_put(f);
1999                                 return err;
2000                         }
2001                         goto next_flow;
2002                 }
2003
2004                 cls_flower.classid = f->res.classid;
2005
2006                 err = tc_setup_cb_reoffload(block, tp, add, cb,
2007                                             TC_SETUP_CLSFLOWER, &cls_flower,
2008                                             cb_priv, &f->flags,
2009                                             &f->in_hw_count);
2010                 tc_cleanup_flow_action(&cls_flower.rule->action);
2011                 kfree(cls_flower.rule);
2012
2013                 if (err) {
2014                         __fl_put(f);
2015                         return err;
2016                 }
2017 next_flow:
2018                 __fl_put(f);
2019         }
2020
2021         return 0;
2022 }
2023
2024 static void fl_hw_add(struct tcf_proto *tp, void *type_data)
2025 {
2026         struct flow_cls_offload *cls_flower = type_data;
2027         struct cls_fl_filter *f =
2028                 (struct cls_fl_filter *) cls_flower->cookie;
2029         struct cls_fl_head *head = fl_head_dereference(tp);
2030
2031         spin_lock(&tp->lock);
2032         list_add(&f->hw_list, &head->hw_filters);
2033         spin_unlock(&tp->lock);
2034 }
2035
2036 static void fl_hw_del(struct tcf_proto *tp, void *type_data)
2037 {
2038         struct flow_cls_offload *cls_flower = type_data;
2039         struct cls_fl_filter *f =
2040                 (struct cls_fl_filter *) cls_flower->cookie;
2041
2042         spin_lock(&tp->lock);
2043         if (!list_empty(&f->hw_list))
2044                 list_del_init(&f->hw_list);
2045         spin_unlock(&tp->lock);
2046 }
2047
2048 static int fl_hw_create_tmplt(struct tcf_chain *chain,
2049                               struct fl_flow_tmplt *tmplt)
2050 {
2051         struct flow_cls_offload cls_flower = {};
2052         struct tcf_block *block = chain->block;
2053
2054         cls_flower.rule = flow_rule_alloc(0);
2055         if (!cls_flower.rule)
2056                 return -ENOMEM;
2057
2058         cls_flower.common.chain_index = chain->index;
2059         cls_flower.command = FLOW_CLS_TMPLT_CREATE;
2060         cls_flower.cookie = (unsigned long) tmplt;
2061         cls_flower.rule->match.dissector = &tmplt->dissector;
2062         cls_flower.rule->match.mask = &tmplt->mask;
2063         cls_flower.rule->match.key = &tmplt->dummy_key;
2064
2065         /* We don't care if driver (any of them) fails to handle this
2066          * call. It serves just as a hint for it.
2067          */
2068         tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2069         kfree(cls_flower.rule);
2070
2071         return 0;
2072 }
2073
2074 static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
2075                                 struct fl_flow_tmplt *tmplt)
2076 {
2077         struct flow_cls_offload cls_flower = {};
2078         struct tcf_block *block = chain->block;
2079
2080         cls_flower.common.chain_index = chain->index;
2081         cls_flower.command = FLOW_CLS_TMPLT_DESTROY;
2082         cls_flower.cookie = (unsigned long) tmplt;
2083
2084         tc_setup_cb_call(block, TC_SETUP_CLSFLOWER, &cls_flower, false, true);
2085 }
2086
2087 static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
2088                              struct nlattr **tca,
2089                              struct netlink_ext_ack *extack)
2090 {
2091         struct fl_flow_tmplt *tmplt;
2092         struct nlattr **tb;
2093         int err;
2094
2095         if (!tca[TCA_OPTIONS])
2096                 return ERR_PTR(-EINVAL);
2097
2098         tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
2099         if (!tb)
2100                 return ERR_PTR(-ENOBUFS);
2101         err = nla_parse_nested_deprecated(tb, TCA_FLOWER_MAX,
2102                                           tca[TCA_OPTIONS], fl_policy, NULL);
2103         if (err)
2104                 goto errout_tb;
2105
2106         tmplt = kzalloc(sizeof(*tmplt), GFP_KERNEL);
2107         if (!tmplt) {
2108                 err = -ENOMEM;
2109                 goto errout_tb;
2110         }
2111         tmplt->chain = chain;
2112         err = fl_set_key(net, tb, &tmplt->dummy_key, &tmplt->mask, extack);
2113         if (err)
2114                 goto errout_tmplt;
2115
2116         fl_init_dissector(&tmplt->dissector, &tmplt->mask);
2117
2118         err = fl_hw_create_tmplt(chain, tmplt);
2119         if (err)
2120                 goto errout_tmplt;
2121
2122         kfree(tb);
2123         return tmplt;
2124
2125 errout_tmplt:
2126         kfree(tmplt);
2127 errout_tb:
2128         kfree(tb);
2129         return ERR_PTR(err);
2130 }
2131
2132 static void fl_tmplt_destroy(void *tmplt_priv)
2133 {
2134         struct fl_flow_tmplt *tmplt = tmplt_priv;
2135
2136         fl_hw_destroy_tmplt(tmplt->chain, tmplt);
2137         kfree(tmplt);
2138 }
2139
2140 static int fl_dump_key_val(struct sk_buff *skb,
2141                            void *val, int val_type,
2142                            void *mask, int mask_type, int len)
2143 {
2144         int err;
2145
2146         if (!memchr_inv(mask, 0, len))
2147                 return 0;
2148         err = nla_put(skb, val_type, len, val);
2149         if (err)
2150                 return err;
2151         if (mask_type != TCA_FLOWER_UNSPEC) {
2152                 err = nla_put(skb, mask_type, len, mask);
2153                 if (err)
2154                         return err;
2155         }
2156         return 0;
2157 }
2158
2159 static int fl_dump_key_port_range(struct sk_buff *skb, struct fl_flow_key *key,
2160                                   struct fl_flow_key *mask)
2161 {
2162         if (fl_dump_key_val(skb, &key->tp_min.dst, TCA_FLOWER_KEY_PORT_DST_MIN,
2163                             &mask->tp_min.dst, TCA_FLOWER_UNSPEC,
2164                             sizeof(key->tp_min.dst)) ||
2165             fl_dump_key_val(skb, &key->tp_max.dst, TCA_FLOWER_KEY_PORT_DST_MAX,
2166                             &mask->tp_max.dst, TCA_FLOWER_UNSPEC,
2167                             sizeof(key->tp_max.dst)) ||
2168             fl_dump_key_val(skb, &key->tp_min.src, TCA_FLOWER_KEY_PORT_SRC_MIN,
2169                             &mask->tp_min.src, TCA_FLOWER_UNSPEC,
2170                             sizeof(key->tp_min.src)) ||
2171             fl_dump_key_val(skb, &key->tp_max.src, TCA_FLOWER_KEY_PORT_SRC_MAX,
2172                             &mask->tp_max.src, TCA_FLOWER_UNSPEC,
2173                             sizeof(key->tp_max.src)))
2174                 return -1;
2175
2176         return 0;
2177 }
2178
2179 static int fl_dump_key_mpls(struct sk_buff *skb,
2180                             struct flow_dissector_key_mpls *mpls_key,
2181                             struct flow_dissector_key_mpls *mpls_mask)
2182 {
2183         int err;
2184
2185         if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
2186                 return 0;
2187         if (mpls_mask->mpls_ttl) {
2188                 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
2189                                  mpls_key->mpls_ttl);
2190                 if (err)
2191                         return err;
2192         }
2193         if (mpls_mask->mpls_tc) {
2194                 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
2195                                  mpls_key->mpls_tc);
2196                 if (err)
2197                         return err;
2198         }
2199         if (mpls_mask->mpls_label) {
2200                 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
2201                                   mpls_key->mpls_label);
2202                 if (err)
2203                         return err;
2204         }
2205         if (mpls_mask->mpls_bos) {
2206                 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
2207                                  mpls_key->mpls_bos);
2208                 if (err)
2209                         return err;
2210         }
2211         return 0;
2212 }
2213
2214 static int fl_dump_key_ip(struct sk_buff *skb, bool encap,
2215                           struct flow_dissector_key_ip *key,
2216                           struct flow_dissector_key_ip *mask)
2217 {
2218         int tos_key = encap ? TCA_FLOWER_KEY_ENC_IP_TOS : TCA_FLOWER_KEY_IP_TOS;
2219         int ttl_key = encap ? TCA_FLOWER_KEY_ENC_IP_TTL : TCA_FLOWER_KEY_IP_TTL;
2220         int tos_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TOS_MASK : TCA_FLOWER_KEY_IP_TOS_MASK;
2221         int ttl_mask = encap ? TCA_FLOWER_KEY_ENC_IP_TTL_MASK : TCA_FLOWER_KEY_IP_TTL_MASK;
2222
2223         if (fl_dump_key_val(skb, &key->tos, tos_key, &mask->tos, tos_mask, sizeof(key->tos)) ||
2224             fl_dump_key_val(skb, &key->ttl, ttl_key, &mask->ttl, ttl_mask, sizeof(key->ttl)))
2225                 return -1;
2226
2227         return 0;
2228 }
2229
2230 static int fl_dump_key_vlan(struct sk_buff *skb,
2231                             int vlan_id_key, int vlan_prio_key,
2232                             struct flow_dissector_key_vlan *vlan_key,
2233                             struct flow_dissector_key_vlan *vlan_mask)
2234 {
2235         int err;
2236
2237         if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
2238                 return 0;
2239         if (vlan_mask->vlan_id) {
2240                 err = nla_put_u16(skb, vlan_id_key,
2241                                   vlan_key->vlan_id);
2242                 if (err)
2243                         return err;
2244         }
2245         if (vlan_mask->vlan_priority) {
2246                 err = nla_put_u8(skb, vlan_prio_key,
2247                                  vlan_key->vlan_priority);
2248                 if (err)
2249                         return err;
2250         }
2251         return 0;
2252 }
2253
2254 static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
2255                             u32 *flower_key, u32 *flower_mask,
2256                             u32 flower_flag_bit, u32 dissector_flag_bit)
2257 {
2258         if (dissector_mask & dissector_flag_bit) {
2259                 *flower_mask |= flower_flag_bit;
2260                 if (dissector_key & dissector_flag_bit)
2261                         *flower_key |= flower_flag_bit;
2262         }
2263 }
2264
2265 static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
2266 {
2267         u32 key, mask;
2268         __be32 _key, _mask;
2269         int err;
2270
2271         if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
2272                 return 0;
2273
2274         key = 0;
2275         mask = 0;
2276
2277         fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2278                         TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
2279         fl_get_key_flag(flags_key, flags_mask, &key, &mask,
2280                         TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST,
2281                         FLOW_DIS_FIRST_FRAG);
2282
2283         _key = cpu_to_be32(key);
2284         _mask = cpu_to_be32(mask);
2285
2286         err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
2287         if (err)
2288                 return err;
2289
2290         return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
2291 }
2292
2293 static int fl_dump_key_geneve_opt(struct sk_buff *skb,
2294                                   struct flow_dissector_key_enc_opts *enc_opts)
2295 {
2296         struct geneve_opt *opt;
2297         struct nlattr *nest;
2298         int opt_off = 0;
2299
2300         nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_GENEVE);
2301         if (!nest)
2302                 goto nla_put_failure;
2303
2304         while (enc_opts->len > opt_off) {
2305                 opt = (struct geneve_opt *)&enc_opts->data[opt_off];
2306
2307                 if (nla_put_be16(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS,
2308                                  opt->opt_class))
2309                         goto nla_put_failure;
2310                 if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE,
2311                                opt->type))
2312                         goto nla_put_failure;
2313                 if (nla_put(skb, TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA,
2314                             opt->length * 4, opt->opt_data))
2315                         goto nla_put_failure;
2316
2317                 opt_off += sizeof(struct geneve_opt) + opt->length * 4;
2318         }
2319         nla_nest_end(skb, nest);
2320         return 0;
2321
2322 nla_put_failure:
2323         nla_nest_cancel(skb, nest);
2324         return -EMSGSIZE;
2325 }
2326
2327 static int fl_dump_key_vxlan_opt(struct sk_buff *skb,
2328                                  struct flow_dissector_key_enc_opts *enc_opts)
2329 {
2330         struct vxlan_metadata *md;
2331         struct nlattr *nest;
2332
2333         nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_VXLAN);
2334         if (!nest)
2335                 goto nla_put_failure;
2336
2337         md = (struct vxlan_metadata *)&enc_opts->data[0];
2338         if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP, md->gbp))
2339                 goto nla_put_failure;
2340
2341         nla_nest_end(skb, nest);
2342         return 0;
2343
2344 nla_put_failure:
2345         nla_nest_cancel(skb, nest);
2346         return -EMSGSIZE;
2347 }
2348
2349 static int fl_dump_key_erspan_opt(struct sk_buff *skb,
2350                                   struct flow_dissector_key_enc_opts *enc_opts)
2351 {
2352         struct erspan_metadata *md;
2353         struct nlattr *nest;
2354
2355         nest = nla_nest_start_noflag(skb, TCA_FLOWER_KEY_ENC_OPTS_ERSPAN);
2356         if (!nest)
2357                 goto nla_put_failure;
2358
2359         md = (struct erspan_metadata *)&enc_opts->data[0];
2360         if (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER, md->version))
2361                 goto nla_put_failure;
2362
2363         if (md->version == 1 &&
2364             nla_put_be32(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
2365                 goto nla_put_failure;
2366
2367         if (md->version == 2 &&
2368             (nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR,
2369                         md->u.md2.dir) ||
2370              nla_put_u8(skb, TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID,
2371                         get_hwid(&md->u.md2))))
2372                 goto nla_put_failure;
2373
2374         nla_nest_end(skb, nest);
2375         return 0;
2376
2377 nla_put_failure:
2378         nla_nest_cancel(skb, nest);
2379         return -EMSGSIZE;
2380 }
2381
2382 static int fl_dump_key_ct(struct sk_buff *skb,
2383                           struct flow_dissector_key_ct *key,
2384                           struct flow_dissector_key_ct *mask)
2385 {
2386         if (IS_ENABLED(CONFIG_NF_CONNTRACK) &&
2387             fl_dump_key_val(skb, &key->ct_state, TCA_FLOWER_KEY_CT_STATE,
2388                             &mask->ct_state, TCA_FLOWER_KEY_CT_STATE_MASK,
2389                             sizeof(key->ct_state)))
2390                 goto nla_put_failure;
2391
2392         if (IS_ENABLED(CONFIG_NF_CONNTRACK_ZONES) &&
2393             fl_dump_key_val(skb, &key->ct_zone, TCA_FLOWER_KEY_CT_ZONE,
2394                             &mask->ct_zone, TCA_FLOWER_KEY_CT_ZONE_MASK,
2395                             sizeof(key->ct_zone)))
2396                 goto nla_put_failure;
2397
2398         if (IS_ENABLED(CONFIG_NF_CONNTRACK_MARK) &&
2399             fl_dump_key_val(skb, &key->ct_mark, TCA_FLOWER_KEY_CT_MARK,
2400                             &mask->ct_mark, TCA_FLOWER_KEY_CT_MARK_MASK,
2401                             sizeof(key->ct_mark)))
2402                 goto nla_put_failure;
2403
2404         if (IS_ENABLED(CONFIG_NF_CONNTRACK_LABELS) &&
2405             fl_dump_key_val(skb, &key->ct_labels, TCA_FLOWER_KEY_CT_LABELS,
2406                             &mask->ct_labels, TCA_FLOWER_KEY_CT_LABELS_MASK,
2407                             sizeof(key->ct_labels)))
2408                 goto nla_put_failure;
2409
2410         return 0;
2411
2412 nla_put_failure:
2413         return -EMSGSIZE;
2414 }
2415
2416 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
2417                                struct flow_dissector_key_enc_opts *enc_opts)
2418 {
2419         struct nlattr *nest;
2420         int err;
2421
2422         if (!enc_opts->len)
2423                 return 0;
2424
2425         nest = nla_nest_start_noflag(skb, enc_opt_type);
2426         if (!nest)
2427                 goto nla_put_failure;
2428
2429         switch (enc_opts->dst_opt_type) {
2430         case TUNNEL_GENEVE_OPT:
2431                 err = fl_dump_key_geneve_opt(skb, enc_opts);
2432                 if (err)
2433                         goto nla_put_failure;
2434                 break;
2435         case TUNNEL_VXLAN_OPT:
2436                 err = fl_dump_key_vxlan_opt(skb, enc_opts);
2437                 if (err)
2438                         goto nla_put_failure;
2439                 break;
2440         case TUNNEL_ERSPAN_OPT:
2441                 err = fl_dump_key_erspan_opt(skb, enc_opts);
2442                 if (err)
2443                         goto nla_put_failure;
2444                 break;
2445         default:
2446                 goto nla_put_failure;
2447         }
2448         nla_nest_end(skb, nest);
2449         return 0;
2450
2451 nla_put_failure:
2452         nla_nest_cancel(skb, nest);
2453         return -EMSGSIZE;
2454 }
2455
2456 static int fl_dump_key_enc_opt(struct sk_buff *skb,
2457                                struct flow_dissector_key_enc_opts *key_opts,
2458                                struct flow_dissector_key_enc_opts *msk_opts)
2459 {
2460         int err;
2461
2462         err = fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS, key_opts);
2463         if (err)
2464                 return err;
2465
2466         return fl_dump_key_options(skb, TCA_FLOWER_KEY_ENC_OPTS_MASK, msk_opts);
2467 }
2468
2469 static int fl_dump_key(struct sk_buff *skb, struct net *net,
2470                        struct fl_flow_key *key, struct fl_flow_key *mask)
2471 {
2472         if (mask->meta.ingress_ifindex) {
2473                 struct net_device *dev;
2474
2475                 dev = __dev_get_by_index(net, key->meta.ingress_ifindex);
2476                 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
2477                         goto nla_put_failure;
2478         }
2479
2480         if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
2481                             mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
2482                             sizeof(key->eth.dst)) ||
2483             fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
2484                             mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
2485                             sizeof(key->eth.src)) ||
2486             fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
2487                             &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
2488                             sizeof(key->basic.n_proto)))
2489                 goto nla_put_failure;
2490
2491         if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
2492                 goto nla_put_failure;
2493
2494         if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_VLAN_ID,
2495                              TCA_FLOWER_KEY_VLAN_PRIO, &key->vlan, &mask->vlan))
2496                 goto nla_put_failure;
2497
2498         if (fl_dump_key_vlan(skb, TCA_FLOWER_KEY_CVLAN_ID,
2499                              TCA_FLOWER_KEY_CVLAN_PRIO,
2500                              &key->cvlan, &mask->cvlan) ||
2501             (mask->cvlan.vlan_tpid &&
2502              nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2503                           key->cvlan.vlan_tpid)))
2504                 goto nla_put_failure;
2505
2506         if (mask->basic.n_proto) {
2507                 if (mask->cvlan.vlan_tpid) {
2508                         if (nla_put_be16(skb, TCA_FLOWER_KEY_CVLAN_ETH_TYPE,
2509                                          key->basic.n_proto))
2510                                 goto nla_put_failure;
2511                 } else if (mask->vlan.vlan_tpid) {
2512                         if (nla_put_be16(skb, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
2513                                          key->basic.n_proto))
2514                                 goto nla_put_failure;
2515                 }
2516         }
2517
2518         if ((key->basic.n_proto == htons(ETH_P_IP) ||
2519              key->basic.n_proto == htons(ETH_P_IPV6)) &&
2520             (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
2521                             &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
2522                             sizeof(key->basic.ip_proto)) ||
2523             fl_dump_key_ip(skb, false, &key->ip, &mask->ip)))
2524                 goto nla_put_failure;
2525
2526         if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2527             (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
2528                              &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
2529                              sizeof(key->ipv4.src)) ||
2530              fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
2531                              &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
2532                              sizeof(key->ipv4.dst))))
2533                 goto nla_put_failure;
2534         else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2535                  (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
2536                                   &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
2537                                   sizeof(key->ipv6.src)) ||
2538                   fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
2539                                   &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
2540                                   sizeof(key->ipv6.dst))))
2541                 goto nla_put_failure;
2542
2543         if (key->basic.ip_proto == IPPROTO_TCP &&
2544             (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
2545                              &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
2546                              sizeof(key->tp.src)) ||
2547              fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
2548                              &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
2549                              sizeof(key->tp.dst)) ||
2550              fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
2551                              &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
2552                              sizeof(key->tcp.flags))))
2553                 goto nla_put_failure;
2554         else if (key->basic.ip_proto == IPPROTO_UDP &&
2555                  (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
2556                                   &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
2557                                   sizeof(key->tp.src)) ||
2558                   fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
2559                                   &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
2560                                   sizeof(key->tp.dst))))
2561                 goto nla_put_failure;
2562         else if (key->basic.ip_proto == IPPROTO_SCTP &&
2563                  (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
2564                                   &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
2565                                   sizeof(key->tp.src)) ||
2566                   fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
2567                                   &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
2568                                   sizeof(key->tp.dst))))
2569                 goto nla_put_failure;
2570         else if (key->basic.n_proto == htons(ETH_P_IP) &&
2571                  key->basic.ip_proto == IPPROTO_ICMP &&
2572                  (fl_dump_key_val(skb, &key->icmp.type,
2573                                   TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
2574                                   TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
2575                                   sizeof(key->icmp.type)) ||
2576                   fl_dump_key_val(skb, &key->icmp.code,
2577                                   TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
2578                                   TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
2579                                   sizeof(key->icmp.code))))
2580                 goto nla_put_failure;
2581         else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
2582                  key->basic.ip_proto == IPPROTO_ICMPV6 &&
2583                  (fl_dump_key_val(skb, &key->icmp.type,
2584                                   TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
2585                                   TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
2586                                   sizeof(key->icmp.type)) ||
2587                   fl_dump_key_val(skb, &key->icmp.code,
2588                                   TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
2589                                   TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
2590                                   sizeof(key->icmp.code))))
2591                 goto nla_put_failure;
2592         else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
2593                   key->basic.n_proto == htons(ETH_P_RARP)) &&
2594                  (fl_dump_key_val(skb, &key->arp.sip,
2595                                   TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
2596                                   TCA_FLOWER_KEY_ARP_SIP_MASK,
2597                                   sizeof(key->arp.sip)) ||
2598                   fl_dump_key_val(skb, &key->arp.tip,
2599                                   TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
2600                                   TCA_FLOWER_KEY_ARP_TIP_MASK,
2601                                   sizeof(key->arp.tip)) ||
2602                   fl_dump_key_val(skb, &key->arp.op,
2603                                   TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
2604                                   TCA_FLOWER_KEY_ARP_OP_MASK,
2605                                   sizeof(key->arp.op)) ||
2606                   fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
2607                                   mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
2608                                   sizeof(key->arp.sha)) ||
2609                   fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
2610                                   mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
2611                                   sizeof(key->arp.tha))))
2612                 goto nla_put_failure;
2613
2614         if ((key->basic.ip_proto == IPPROTO_TCP ||
2615              key->basic.ip_proto == IPPROTO_UDP ||
2616              key->basic.ip_proto == IPPROTO_SCTP) &&
2617              fl_dump_key_port_range(skb, key, mask))
2618                 goto nla_put_failure;
2619
2620         if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
2621             (fl_dump_key_val(skb, &key->enc_ipv4.src,
2622                             TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
2623                             TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
2624                             sizeof(key->enc_ipv4.src)) ||
2625              fl_dump_key_val(skb, &key->enc_ipv4.dst,
2626                              TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
2627                              TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
2628                              sizeof(key->enc_ipv4.dst))))
2629                 goto nla_put_failure;
2630         else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
2631                  (fl_dump_key_val(skb, &key->enc_ipv6.src,
2632                             TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
2633                             TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
2634                             sizeof(key->enc_ipv6.src)) ||
2635                  fl_dump_key_val(skb, &key->enc_ipv6.dst,
2636                                  TCA_FLOWER_KEY_ENC_IPV6_DST,
2637                                  &mask->enc_ipv6.dst,
2638                                  TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
2639                             sizeof(key->enc_ipv6.dst))))
2640                 goto nla_put_failure;
2641
2642         if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
2643                             &mask->enc_key_id, TCA_FLOWER_UNSPEC,
2644                             sizeof(key->enc_key_id)) ||
2645             fl_dump_key_val(skb, &key->enc_tp.src,
2646                             TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
2647                             &mask->enc_tp.src,
2648                             TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
2649                             sizeof(key->enc_tp.src)) ||
2650             fl_dump_key_val(skb, &key->enc_tp.dst,
2651                             TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
2652                             &mask->enc_tp.dst,
2653                             TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
2654                             sizeof(key->enc_tp.dst)) ||
2655             fl_dump_key_ip(skb, true, &key->enc_ip, &mask->enc_ip) ||
2656             fl_dump_key_enc_opt(skb, &key->enc_opts, &mask->enc_opts))
2657                 goto nla_put_failure;
2658
2659         if (fl_dump_key_ct(skb, &key->ct, &mask->ct))
2660                 goto nla_put_failure;
2661
2662         if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
2663                 goto nla_put_failure;
2664
2665         return 0;
2666
2667 nla_put_failure:
2668         return -EMSGSIZE;
2669 }
2670
2671 static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
2672                    struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
2673 {
2674         struct cls_fl_filter *f = fh;
2675         struct nlattr *nest;
2676         struct fl_flow_key *key, *mask;
2677         bool skip_hw;
2678
2679         if (!f)
2680                 return skb->len;
2681
2682         t->tcm_handle = f->handle;
2683
2684         nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2685         if (!nest)
2686                 goto nla_put_failure;
2687
2688         spin_lock(&tp->lock);
2689
2690         if (f->res.classid &&
2691             nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
2692                 goto nla_put_failure_locked;
2693
2694         key = &f->key;
2695         mask = &f->mask->key;
2696         skip_hw = tc_skip_hw(f->flags);
2697
2698         if (fl_dump_key(skb, net, key, mask))
2699                 goto nla_put_failure_locked;
2700
2701         if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
2702                 goto nla_put_failure_locked;
2703
2704         spin_unlock(&tp->lock);
2705
2706         if (!skip_hw)
2707                 fl_hw_update_stats(tp, f, rtnl_held);
2708
2709         if (nla_put_u32(skb, TCA_FLOWER_IN_HW_COUNT, f->in_hw_count))
2710                 goto nla_put_failure;
2711
2712         if (tcf_exts_dump(skb, &f->exts))
2713                 goto nla_put_failure;
2714
2715         nla_nest_end(skb, nest);
2716
2717         if (tcf_exts_dump_stats(skb, &f->exts) < 0)
2718                 goto nla_put_failure;
2719
2720         return skb->len;
2721
2722 nla_put_failure_locked:
2723         spin_unlock(&tp->lock);
2724 nla_put_failure:
2725         nla_nest_cancel(skb, nest);
2726         return -1;
2727 }
2728
2729 static int fl_tmplt_dump(struct sk_buff *skb, struct net *net, void *tmplt_priv)
2730 {
2731         struct fl_flow_tmplt *tmplt = tmplt_priv;
2732         struct fl_flow_key *key, *mask;
2733         struct nlattr *nest;
2734
2735         nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
2736         if (!nest)
2737                 goto nla_put_failure;
2738
2739         key = &tmplt->dummy_key;
2740         mask = &tmplt->mask;
2741
2742         if (fl_dump_key(skb, net, key, mask))
2743                 goto nla_put_failure;
2744
2745         nla_nest_end(skb, nest);
2746
2747         return skb->len;
2748
2749 nla_put_failure:
2750         nla_nest_cancel(skb, nest);
2751         return -EMSGSIZE;
2752 }
2753
2754 static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
2755 {
2756         struct cls_fl_filter *f = fh;
2757
2758         if (f && f->res.classid == classid)
2759                 f->res.class = cl;
2760 }
2761
2762 static struct tcf_proto_ops cls_fl_ops __read_mostly = {
2763         .kind           = "flower",
2764         .classify       = fl_classify,
2765         .init           = fl_init,
2766         .destroy        = fl_destroy,
2767         .get            = fl_get,
2768         .put            = fl_put,
2769         .change         = fl_change,
2770         .delete         = fl_delete,
2771         .walk           = fl_walk,
2772         .reoffload      = fl_reoffload,
2773         .hw_add         = fl_hw_add,
2774         .hw_del         = fl_hw_del,
2775         .dump           = fl_dump,
2776         .bind_class     = fl_bind_class,
2777         .tmplt_create   = fl_tmplt_create,
2778         .tmplt_destroy  = fl_tmplt_destroy,
2779         .tmplt_dump     = fl_tmplt_dump,
2780         .owner          = THIS_MODULE,
2781         .flags          = TCF_PROTO_OPS_DOIT_UNLOCKED,
2782 };
2783
2784 static int __init cls_fl_init(void)
2785 {
2786         return register_tcf_proto_ops(&cls_fl_ops);
2787 }
2788
2789 static void __exit cls_fl_exit(void)
2790 {
2791         unregister_tcf_proto_ops(&cls_fl_ops);
2792 }
2793
2794 module_init(cls_fl_init);
2795 module_exit(cls_fl_exit);
2796
2797 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
2798 MODULE_DESCRIPTION("Flower classifier");
2799 MODULE_LICENSE("GPL v2");