include/net/flow_offload.h

   1 #ifndef _NET_FLOW_OFFLOAD_H
   2 #define _NET_FLOW_OFFLOAD_H
   3
   4 #include <linux/kernel.h>
   5 #include <linux/list.h>
   6 #include <linux/netlink.h>
   7 #include <net/flow_dissector.h>
   8
   9 struct flow_match {
  10         struct flow_dissector   *dissector;
  11         void                    *mask;
  12         void                    *key;
  13 };
  14
  15 struct flow_match_meta {
  16         struct flow_dissector_key_meta *key, *mask;
  17 };
  18
  19 struct flow_match_basic {
  20         struct flow_dissector_key_basic *key, *mask;
  21 };
  22
  23 struct flow_match_control {
  24         struct flow_dissector_key_control *key, *mask;
  25 };
  26
  27 struct flow_match_eth_addrs {
  28         struct flow_dissector_key_eth_addrs *key, *mask;
  29 };
  30
  31 struct flow_match_vlan {
  32         struct flow_dissector_key_vlan *key, *mask;
  33 };
  34
  35 struct flow_match_ipv4_addrs {
  36         struct flow_dissector_key_ipv4_addrs *key, *mask;
  37 };
  38
  39 struct flow_match_ipv6_addrs {
  40         struct flow_dissector_key_ipv6_addrs *key, *mask;
  41 };
  42
  43 struct flow_match_ip {
  44         struct flow_dissector_key_ip *key, *mask;
  45 };
  46
  47 struct flow_match_ports {
  48         struct flow_dissector_key_ports *key, *mask;
  49 };
  50
  51 struct flow_match_icmp {
  52         struct flow_dissector_key_icmp *key, *mask;
  53 };
  54
  55 struct flow_match_tcp {
  56         struct flow_dissector_key_tcp *key, *mask;
  57 };
  58
  59 struct flow_match_mpls {
  60         struct flow_dissector_key_mpls *key, *mask;
  61 };
  62
  63 struct flow_match_enc_keyid {
  64         struct flow_dissector_key_keyid *key, *mask;
  65 };
  66
  67 struct flow_match_enc_opts {
  68         struct flow_dissector_key_enc_opts *key, *mask;
  69 };
  70
  71 struct flow_match_ct {
  72         struct flow_dissector_key_ct *key, *mask;
  73 };
  74
  75 struct flow_rule;
  76
  77 void flow_rule_match_meta(const struct flow_rule *rule,
  78                           struct flow_match_meta *out);
  79 void flow_rule_match_basic(const struct flow_rule *rule,
  80                            struct flow_match_basic *out);
  81 void flow_rule_match_control(const struct flow_rule *rule,
  82                              struct flow_match_control *out);
  83 void flow_rule_match_eth_addrs(const struct flow_rule *rule,
  84                                struct flow_match_eth_addrs *out);
  85 void flow_rule_match_vlan(const struct flow_rule *rule,
  86                           struct flow_match_vlan *out);
  87 void flow_rule_match_cvlan(const struct flow_rule *rule,
  88                            struct flow_match_vlan *out);
  89 void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
  90                                 struct flow_match_ipv4_addrs *out);
  91 void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
  92                                 struct flow_match_ipv6_addrs *out);
  93 void flow_rule_match_ip(const struct flow_rule *rule,
  94                         struct flow_match_ip *out);
  95 void flow_rule_match_ports(const struct flow_rule *rule,
  96                            struct flow_match_ports *out);
  97 void flow_rule_match_tcp(const struct flow_rule *rule,
  98                          struct flow_match_tcp *out);
  99 void flow_rule_match_icmp(const struct flow_rule *rule,
 100                           struct flow_match_icmp *out);
 101 void flow_rule_match_mpls(const struct flow_rule *rule,
 102                           struct flow_match_mpls *out);
 103 void flow_rule_match_enc_control(const struct flow_rule *rule,
 104                                  struct flow_match_control *out);
 105 void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
 106                                     struct flow_match_ipv4_addrs *out);
 107 void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
 108                                     struct flow_match_ipv6_addrs *out);
 109 void flow_rule_match_enc_ip(const struct flow_rule *rule,
 110                             struct flow_match_ip *out);
 111 void flow_rule_match_enc_ports(const struct flow_rule *rule,
 112                                struct flow_match_ports *out);
 113 void flow_rule_match_enc_keyid(const struct flow_rule *rule,
 114                                struct flow_match_enc_keyid *out);
 115 void flow_rule_match_enc_opts(const struct flow_rule *rule,
 116                               struct flow_match_enc_opts *out);
 117 void flow_rule_match_ct(const struct flow_rule *rule,
 118                         struct flow_match_ct *out);
 119
 120 enum flow_action_id {
 121         FLOW_ACTION_ACCEPT              = 0,
 122         FLOW_ACTION_DROP,
 123         FLOW_ACTION_TRAP,
 124         FLOW_ACTION_GOTO,
 125         FLOW_ACTION_REDIRECT,
 126         FLOW_ACTION_MIRRED,
 127         FLOW_ACTION_REDIRECT_INGRESS,
 128         FLOW_ACTION_MIRRED_INGRESS,
 129         FLOW_ACTION_VLAN_PUSH,
 130         FLOW_ACTION_VLAN_POP,
 131         FLOW_ACTION_VLAN_MANGLE,
 132         FLOW_ACTION_TUNNEL_ENCAP,
 133         FLOW_ACTION_TUNNEL_DECAP,
 134         FLOW_ACTION_MANGLE,
 135         FLOW_ACTION_ADD,
 136         FLOW_ACTION_CSUM,
 137         FLOW_ACTION_MARK,
 138         FLOW_ACTION_PTYPE,
 139         FLOW_ACTION_PRIORITY,
 140         FLOW_ACTION_WAKE,
 141         FLOW_ACTION_QUEUE,
 142         FLOW_ACTION_SAMPLE,
 143         FLOW_ACTION_POLICE,
 144         FLOW_ACTION_CT,
 145         FLOW_ACTION_CT_METADATA,
 146         FLOW_ACTION_MPLS_PUSH,
 147         FLOW_ACTION_MPLS_POP,
 148         FLOW_ACTION_MPLS_MANGLE,
 149         FLOW_ACTION_GATE,
 150         FLOW_ACTION_PPPOE_PUSH,
 151         FLOW_ACTION_JUMP,
 152         FLOW_ACTION_PIPE,
 153         FLOW_ACTION_VLAN_PUSH_ETH,
 154         FLOW_ACTION_VLAN_POP_ETH,
 155         NUM_FLOW_ACTIONS,
 156 };
 157
 158 /* This is mirroring enum pedit_header_type definition for easy mapping between
 159  * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
 160  * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
 161  */
 162 enum flow_action_mangle_base {
 163         FLOW_ACT_MANGLE_UNSPEC          = 0,
 164         FLOW_ACT_MANGLE_HDR_TYPE_ETH,
 165         FLOW_ACT_MANGLE_HDR_TYPE_IP4,
 166         FLOW_ACT_MANGLE_HDR_TYPE_IP6,
 167         FLOW_ACT_MANGLE_HDR_TYPE_TCP,
 168         FLOW_ACT_MANGLE_HDR_TYPE_UDP,
 169 };
 170
 171 enum flow_action_hw_stats_bit {
 172         FLOW_ACTION_HW_STATS_IMMEDIATE_BIT,
 173         FLOW_ACTION_HW_STATS_DELAYED_BIT,
 174         FLOW_ACTION_HW_STATS_DISABLED_BIT,
 175
 176         FLOW_ACTION_HW_STATS_NUM_BITS
 177 };
 178
 179 enum flow_action_hw_stats {
 180         FLOW_ACTION_HW_STATS_IMMEDIATE =
 181                 BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT),
 182         FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT),
 183         FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE |
 184                                    FLOW_ACTION_HW_STATS_DELAYED,
 185         FLOW_ACTION_HW_STATS_DISABLED =
 186                 BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT),
 187         FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,
 188 };
 189
 190 typedef void (*action_destr)(void *priv);
 191
 192 struct flow_action_cookie {
 193         u32 cookie_len;
 194         u8 cookie[];
 195 };
 196
 197 struct flow_action_cookie *flow_action_cookie_create(void *data,
 198                                                      unsigned int len,
 199                                                      gfp_t gfp);
 200 void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
 201
 202 struct flow_action_entry {
 203         enum flow_action_id             id;
 204         u32                             hw_index;
 205         enum flow_action_hw_stats       hw_stats;
 206         action_destr                    destructor;
 207         void                            *destructor_priv;
 208         union {
 209                 u32                     chain_index;    /* FLOW_ACTION_GOTO */
 210                 struct net_device       *dev;           /* FLOW_ACTION_REDIRECT */
 211                 struct {                                /* FLOW_ACTION_VLAN */
 212                         u16             vid;
 213                         __be16          proto;
 214                         u8              prio;
 215                 } vlan;
 216                 struct {                                /* FLOW_ACTION_VLAN_PUSH_ETH */
 217                         unsigned char dst[ETH_ALEN];
 218                         unsigned char src[ETH_ALEN];
 219                 } vlan_push_eth;
 220                 struct {                                /* FLOW_ACTION_MANGLE */
 221                                                         /* FLOW_ACTION_ADD */
 222                         enum flow_action_mangle_base htype;
 223                         u32             offset;
 224                         u32             mask;
 225                         u32             val;
 226                 } mangle;
 227                 struct ip_tunnel_info   *tunnel;        /* FLOW_ACTION_TUNNEL_ENCAP */
 228                 u32                     csum_flags;     /* FLOW_ACTION_CSUM */
 229                 u32                     mark;           /* FLOW_ACTION_MARK */
 230                 u16                     ptype;          /* FLOW_ACTION_PTYPE */
 231                 u32                     priority;       /* FLOW_ACTION_PRIORITY */
 232                 struct {                                /* FLOW_ACTION_QUEUE */
 233                         u32             ctx;
 234                         u32             index;
 235                         u8              vf;
 236                 } queue;
 237                 struct {                                /* FLOW_ACTION_SAMPLE */
 238                         struct psample_group    *psample_group;
 239                         u32                     rate;
 240                         u32                     trunc_size;
 241                         bool                    truncate;
 242                 } sample;
 243                 struct {                                /* FLOW_ACTION_POLICE */
 244                         u32                     burst;
 245                         u64                     rate_bytes_ps;
 246                         u64                     peakrate_bytes_ps;
 247                         u32                     avrate;
 248                         u16                     overhead;
 249                         u64                     burst_pkt;
 250                         u64                     rate_pkt_ps;
 251                         u32                     mtu;
 252                         struct {
 253                                 enum flow_action_id     act_id;
 254                                 u32                     extval;
 255                         } exceed, notexceed;
 256                 } police;
 257                 struct {                                /* FLOW_ACTION_CT */
 258                         int action;
 259                         u16 zone;
 260                         struct nf_flowtable *flow_table;
 261                 } ct;
 262                 struct {
 263                         unsigned long cookie;
 264                         u32 mark;
 265                         u32 labels[4];
 266                         bool orig_dir;
 267                 } ct_metadata;
 268                 struct {                                /* FLOW_ACTION_MPLS_PUSH */
 269                         u32             label;
 270                         __be16          proto;
 271                         u8              tc;
 272                         u8              bos;
 273                         u8              ttl;
 274                 } mpls_push;
 275                 struct {                                /* FLOW_ACTION_MPLS_POP */
 276                         __be16          proto;
 277                 } mpls_pop;
 278                 struct {                                /* FLOW_ACTION_MPLS_MANGLE */
 279                         u32             label;
 280                         u8              tc;
 281                         u8              bos;
 282                         u8              ttl;
 283                 } mpls_mangle;
 284                 struct {
 285                         s32             prio;
 286                         u64             basetime;
 287                         u64             cycletime;
 288                         u64             cycletimeext;
 289                         u32             num_entries;
 290                         struct action_gate_entry *entries;
 291                 } gate;
 292                 struct {                                /* FLOW_ACTION_PPPOE_PUSH */
 293                         u16             sid;
 294                 } pppoe;
 295         };
 296         struct flow_action_cookie *cookie; /* user defined action cookie */
 297 };
 298
 299 struct flow_action {
 300         unsigned int                    num_entries;
 301         struct flow_action_entry        entries[];
 302 };
 303
 304 static inline bool flow_action_has_entries(const struct flow_action *action)
 305 {
 306         return action->num_entries;
 307 }
 308
 309 /**
 310  * flow_offload_has_one_action() - check if exactly one action is present
 311  * @action: tc filter flow offload action
 312  *
 313  * Returns true if exactly one action is present.
 314  */
 315 static inline bool flow_offload_has_one_action(const struct flow_action *action)
 316 {
 317         return action->num_entries == 1;
 318 }
 319
 320 static inline bool flow_action_is_last_entry(const struct flow_action *action,
 321                                              const struct flow_action_entry *entry)
 322 {
 323         return entry == &action->entries[action->num_entries - 1];
 324 }
 325
 326 #define flow_action_for_each(__i, __act, __actions)                     \
 327         for (__i = 0, __act = &(__actions)->entries[0];                 \
 328              __i < (__actions)->num_entries;                            \
 329              __act = &(__actions)->entries[++__i])
 330
 331 static inline bool
 332 flow_action_mixed_hw_stats_check(const struct flow_action *action,
 333                                  struct netlink_ext_ack *extack)
 334 {
 335         const struct flow_action_entry *action_entry;
 336         u8 last_hw_stats;
 337         int i;
 338
 339         if (flow_offload_has_one_action(action))
 340                 return true;
 341
 342         flow_action_for_each(i, action_entry, action) {
 343                 if (i && action_entry->hw_stats != last_hw_stats) {
 344                         NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported");
 345                         return false;
 346                 }
 347                 last_hw_stats = action_entry->hw_stats;
 348         }
 349         return true;
 350 }
 351
 352 static inline const struct flow_action_entry *
 353 flow_action_first_entry_get(const struct flow_action *action)
 354 {
 355         WARN_ON(!flow_action_has_entries(action));
 356         return &action->entries[0];
 357 }
 358
 359 static inline bool
 360 __flow_action_hw_stats_check(const struct flow_action *action,
 361                              struct netlink_ext_ack *extack,
 362                              bool check_allow_bit,
 363                              enum flow_action_hw_stats_bit allow_bit)
 364 {
 365         const struct flow_action_entry *action_entry;
 366
 367         if (!flow_action_has_entries(action))
 368                 return true;
 369         if (!flow_action_mixed_hw_stats_check(action, extack))
 370                 return false;
 371
 372         action_entry = flow_action_first_entry_get(action);
 373
 374         /* Zero is not a legal value for hw_stats, catch anyone passing it */
 375         WARN_ON_ONCE(!action_entry->hw_stats);
 376
 377         if (!check_allow_bit &&
 378             ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
 379                 NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\"");
 380                 return false;
 381         } else if (check_allow_bit &&
 382                    !(action_entry->hw_stats & BIT(allow_bit))) {
 383                 NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type");
 384                 return false;
 385         }
 386         return true;
 387 }
 388
 389 static inline bool
 390 flow_action_hw_stats_check(const struct flow_action *action,
 391                            struct netlink_ext_ack *extack,
 392                            enum flow_action_hw_stats_bit allow_bit)
 393 {
 394         return __flow_action_hw_stats_check(action, extack, true, allow_bit);
 395 }
 396
 397 static inline bool
 398 flow_action_basic_hw_stats_check(const struct flow_action *action,
 399                                  struct netlink_ext_ack *extack)
 400 {
 401         return __flow_action_hw_stats_check(action, extack, false, 0);
 402 }
 403
 404 struct flow_rule {
 405         struct flow_match       match;
 406         struct flow_action      action;
 407 };
 408
 409 struct flow_rule *flow_rule_alloc(unsigned int num_actions);
 410
 411 static inline bool flow_rule_match_key(const struct flow_rule *rule,
 412                                        enum flow_dissector_key_id key)
 413 {
 414         return dissector_uses_key(rule->match.dissector, key);
 415 }
 416
 417 struct flow_stats {
 418         u64     pkts;
 419         u64     bytes;
 420         u64     drops;
 421         u64     lastused;
 422         enum flow_action_hw_stats used_hw_stats;
 423         bool used_hw_stats_valid;
 424 };
 425
 426 static inline void flow_stats_update(struct flow_stats *flow_stats,
 427                                      u64 bytes, u64 pkts,
 428                                      u64 drops, u64 lastused,
 429                                      enum flow_action_hw_stats used_hw_stats)
 430 {
 431         flow_stats->pkts        += pkts;
 432         flow_stats->bytes       += bytes;
 433         flow_stats->drops       += drops;
 434         flow_stats->lastused    = max_t(u64, flow_stats->lastused, lastused);
 435
 436         /* The driver should pass value with a maximum of one bit set.
 437          * Passing FLOW_ACTION_HW_STATS_ANY is invalid.
 438          */
 439         WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY);
 440         flow_stats->used_hw_stats |= used_hw_stats;
 441         flow_stats->used_hw_stats_valid = true;
 442 }
 443
 444 enum flow_block_command {
 445         FLOW_BLOCK_BIND,
 446         FLOW_BLOCK_UNBIND,
 447 };
 448
 449 enum flow_block_binder_type {
 450         FLOW_BLOCK_BINDER_TYPE_UNSPEC,
 451         FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
 452         FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
 453         FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
 454         FLOW_BLOCK_BINDER_TYPE_RED_MARK,
 455 };
 456
 457 struct flow_block {
 458         struct list_head cb_list;
 459 };
 460
 461 struct netlink_ext_ack;
 462
 463 struct flow_block_offload {
 464         enum flow_block_command command;
 465         enum flow_block_binder_type binder_type;
 466         bool block_shared;
 467         bool unlocked_driver_cb;
 468         struct net *net;
 469         struct flow_block *block;
 470         struct list_head cb_list;
 471         struct list_head *driver_block_list;
 472         struct netlink_ext_ack *extack;
 473         struct Qdisc *sch;
 474         struct list_head *cb_list_head;
 475 };
 476
 477 enum tc_setup_type;
 478 typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
 479                             void *cb_priv);
 480
 481 struct flow_block_cb;
 482
 483 struct flow_block_indr {
 484         struct list_head                list;
 485         struct net_device               *dev;
 486         struct Qdisc                    *sch;
 487         enum flow_block_binder_type     binder_type;
 488         void                            *data;
 489         void                            *cb_priv;
 490         void                            (*cleanup)(struct flow_block_cb *block_cb);
 491 };
 492
 493 struct flow_block_cb {
 494         struct list_head        driver_list;
 495         struct list_head        list;
 496         flow_setup_cb_t         *cb;
 497         void                    *cb_ident;
 498         void                    *cb_priv;
 499         void                    (*release)(void *cb_priv);
 500         struct flow_block_indr  indr;
 501         unsigned int            refcnt;
 502 };
 503
 504 struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
 505                                           void *cb_ident, void *cb_priv,
 506                                           void (*release)(void *cb_priv));
 507 struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
 508                                                void *cb_ident, void *cb_priv,
 509                                                void (*release)(void *cb_priv),
 510                                                struct flow_block_offload *bo,
 511                                                struct net_device *dev,
 512                                                struct Qdisc *sch, void *data,
 513                                                void *indr_cb_priv,
 514                                                void (*cleanup)(struct flow_block_cb *block_cb));
 515 void flow_block_cb_free(struct flow_block_cb *block_cb);
 516
 517 struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
 518                                            flow_setup_cb_t *cb, void *cb_ident);
 519
 520 void *flow_block_cb_priv(struct flow_block_cb *block_cb);
 521 void flow_block_cb_incref(struct flow_block_cb *block_cb);
 522 unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
 523
 524 static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
 525                                      struct flow_block_offload *offload)
 526 {
 527         list_add_tail(&block_cb->list, &offload->cb_list);
 528 }
 529
 530 static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
 531                                         struct flow_block_offload *offload)
 532 {
 533         list_move(&block_cb->list, &offload->cb_list);
 534 }
 535
 536 static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb,
 537                                              struct flow_block_offload *offload)
 538 {
 539         list_del(&block_cb->indr.list);
 540         list_move(&block_cb->list, &offload->cb_list);
 541 }
 542
 543 bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
 544                            struct list_head *driver_block_list);
 545
 546 int flow_block_cb_setup_simple(struct flow_block_offload *f,
 547                                struct list_head *driver_list,
 548                                flow_setup_cb_t *cb,
 549                                void *cb_ident, void *cb_priv, bool ingress_only);
 550
 551 enum flow_cls_command {
 552         FLOW_CLS_REPLACE,
 553         FLOW_CLS_DESTROY,
 554         FLOW_CLS_STATS,
 555         FLOW_CLS_TMPLT_CREATE,
 556         FLOW_CLS_TMPLT_DESTROY,
 557 };
 558
 559 struct flow_cls_common_offload {
 560         u32 chain_index;
 561         __be16 protocol;
 562         u32 prio;
 563         struct netlink_ext_ack *extack;
 564 };
 565
 566 struct flow_cls_offload {
 567         struct flow_cls_common_offload common;
 568         enum flow_cls_command command;
 569         unsigned long cookie;
 570         struct flow_rule *rule;
 571         struct flow_stats stats;
 572         u32 classid;
 573 };
 574
 575 enum offload_act_command  {
 576         FLOW_ACT_REPLACE,
 577         FLOW_ACT_DESTROY,
 578         FLOW_ACT_STATS,
 579 };
 580
 581 struct flow_offload_action {
 582         struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/
 583         enum offload_act_command  command;
 584         enum flow_action_id id;
 585         u32 index;
 586         struct flow_stats stats;
 587         struct flow_action action;
 588 };
 589
 590 struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
 591
 592 static inline struct flow_rule *
 593 flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd)
 594 {
 595         return flow_cmd->rule;
 596 }
 597
 598 static inline void flow_block_init(struct flow_block *flow_block)
 599 {
 600         INIT_LIST_HEAD(&flow_block->cb_list);
 601 }
 602
 603 typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
 604                                       enum tc_setup_type type, void *type_data,
 605                                       void *data,
 606                                       void (*cleanup)(struct flow_block_cb *block_cb));
 607
 608 int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
 609 void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
 610                               void (*release)(void *cb_priv));
 611 int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
 612                                 enum tc_setup_type type, void *data,
 613                                 struct flow_block_offload *bo,
 614                                 void (*cleanup)(struct flow_block_cb *block_cb));
 615 bool flow_indr_dev_exists(void);
 616
 617 #endif /* _NET_FLOW_OFFLOAD_H */