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_ports_range {
  52         struct flow_dissector_key_ports_range *key, *mask;
  53 };
  54
  55 struct flow_match_icmp {
  56         struct flow_dissector_key_icmp *key, *mask;
  57 };
  58
  59 struct flow_match_tcp {
  60         struct flow_dissector_key_tcp *key, *mask;
  61 };
  62
  63 struct flow_match_mpls {
  64         struct flow_dissector_key_mpls *key, *mask;
  65 };
  66
  67 struct flow_match_enc_keyid {
  68         struct flow_dissector_key_keyid *key, *mask;
  69 };
  70
  71 struct flow_match_enc_opts {
  72         struct flow_dissector_key_enc_opts *key, *mask;
  73 };
  74
  75 struct flow_match_ct {
  76         struct flow_dissector_key_ct *key, *mask;
  77 };
  78
  79 struct flow_rule;
  80
  81 void flow_rule_match_meta(const struct flow_rule *rule,
  82                           struct flow_match_meta *out);
  83 void flow_rule_match_basic(const struct flow_rule *rule,
  84                            struct flow_match_basic *out);
  85 void flow_rule_match_control(const struct flow_rule *rule,
  86                              struct flow_match_control *out);
  87 void flow_rule_match_eth_addrs(const struct flow_rule *rule,
  88                                struct flow_match_eth_addrs *out);
  89 void flow_rule_match_vlan(const struct flow_rule *rule,
  90                           struct flow_match_vlan *out);
  91 void flow_rule_match_cvlan(const struct flow_rule *rule,
  92                            struct flow_match_vlan *out);
  93 void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
  94                                 struct flow_match_ipv4_addrs *out);
  95 void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
  96                                 struct flow_match_ipv6_addrs *out);
  97 void flow_rule_match_ip(const struct flow_rule *rule,
  98                         struct flow_match_ip *out);
  99 void flow_rule_match_ports(const struct flow_rule *rule,
 100                            struct flow_match_ports *out);
 101 void flow_rule_match_ports_range(const struct flow_rule *rule,
 102                                  struct flow_match_ports_range *out);
 103 void flow_rule_match_tcp(const struct flow_rule *rule,
 104                          struct flow_match_tcp *out);
 105 void flow_rule_match_icmp(const struct flow_rule *rule,
 106                           struct flow_match_icmp *out);
 107 void flow_rule_match_mpls(const struct flow_rule *rule,
 108                           struct flow_match_mpls *out);
 109 void flow_rule_match_enc_control(const struct flow_rule *rule,
 110                                  struct flow_match_control *out);
 111 void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
 112                                     struct flow_match_ipv4_addrs *out);
 113 void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
 114                                     struct flow_match_ipv6_addrs *out);
 115 void flow_rule_match_enc_ip(const struct flow_rule *rule,
 116                             struct flow_match_ip *out);
 117 void flow_rule_match_enc_ports(const struct flow_rule *rule,
 118                                struct flow_match_ports *out);
 119 void flow_rule_match_enc_keyid(const struct flow_rule *rule,
 120                                struct flow_match_enc_keyid *out);
 121 void flow_rule_match_enc_opts(const struct flow_rule *rule,
 122                               struct flow_match_enc_opts *out);
 123 void flow_rule_match_ct(const struct flow_rule *rule,
 124                         struct flow_match_ct *out);
 125
 126 enum flow_action_id {
 127         FLOW_ACTION_ACCEPT              = 0,
 128         FLOW_ACTION_DROP,
 129         FLOW_ACTION_TRAP,
 130         FLOW_ACTION_GOTO,
 131         FLOW_ACTION_REDIRECT,
 132         FLOW_ACTION_MIRRED,
 133         FLOW_ACTION_REDIRECT_INGRESS,
 134         FLOW_ACTION_MIRRED_INGRESS,
 135         FLOW_ACTION_VLAN_PUSH,
 136         FLOW_ACTION_VLAN_POP,
 137         FLOW_ACTION_VLAN_MANGLE,
 138         FLOW_ACTION_TUNNEL_ENCAP,
 139         FLOW_ACTION_TUNNEL_DECAP,
 140         FLOW_ACTION_MANGLE,
 141         FLOW_ACTION_ADD,
 142         FLOW_ACTION_CSUM,
 143         FLOW_ACTION_MARK,
 144         FLOW_ACTION_PTYPE,
 145         FLOW_ACTION_PRIORITY,
 146         FLOW_ACTION_WAKE,
 147         FLOW_ACTION_QUEUE,
 148         FLOW_ACTION_SAMPLE,
 149         FLOW_ACTION_POLICE,
 150         FLOW_ACTION_CT,
 151         FLOW_ACTION_CT_METADATA,
 152         FLOW_ACTION_MPLS_PUSH,
 153         FLOW_ACTION_MPLS_POP,
 154         FLOW_ACTION_MPLS_MANGLE,
 155         FLOW_ACTION_GATE,
 156         FLOW_ACTION_PPPOE_PUSH,
 157         FLOW_ACTION_JUMP,
 158         FLOW_ACTION_PIPE,
 159         FLOW_ACTION_VLAN_PUSH_ETH,
 160         FLOW_ACTION_VLAN_POP_ETH,
 161         FLOW_ACTION_CONTINUE,
 162         NUM_FLOW_ACTIONS,
 163 };
 164
 165 /* This is mirroring enum pedit_header_type definition for easy mapping between
 166  * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
 167  * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
 168  */
 169 enum flow_action_mangle_base {
 170         FLOW_ACT_MANGLE_UNSPEC          = 0,
 171         FLOW_ACT_MANGLE_HDR_TYPE_ETH,
 172         FLOW_ACT_MANGLE_HDR_TYPE_IP4,
 173         FLOW_ACT_MANGLE_HDR_TYPE_IP6,
 174         FLOW_ACT_MANGLE_HDR_TYPE_TCP,
 175         FLOW_ACT_MANGLE_HDR_TYPE_UDP,
 176 };
 177
 178 enum flow_action_hw_stats_bit {
 179         FLOW_ACTION_HW_STATS_IMMEDIATE_BIT,
 180         FLOW_ACTION_HW_STATS_DELAYED_BIT,
 181         FLOW_ACTION_HW_STATS_DISABLED_BIT,
 182
 183         FLOW_ACTION_HW_STATS_NUM_BITS
 184 };
 185
 186 enum flow_action_hw_stats {
 187         FLOW_ACTION_HW_STATS_IMMEDIATE =
 188                 BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT),
 189         FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT),
 190         FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE |
 191                                    FLOW_ACTION_HW_STATS_DELAYED,
 192         FLOW_ACTION_HW_STATS_DISABLED =
 193                 BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT),
 194         FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,
 195 };
 196
 197 typedef void (*action_destr)(void *priv);
 198
 199 struct flow_action_cookie {
 200         u32 cookie_len;
 201         u8 cookie[];
 202 };
 203
 204 struct flow_action_cookie *flow_action_cookie_create(void *data,
 205                                                      unsigned int len,
 206                                                      gfp_t gfp);
 207 void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
 208
 209 struct flow_action_entry {
 210         enum flow_action_id             id;
 211         u32                             hw_index;
 212         enum flow_action_hw_stats       hw_stats;
 213         action_destr                    destructor;
 214         void                            *destructor_priv;
 215         union {
 216                 u32                     chain_index;    /* FLOW_ACTION_GOTO */
 217                 struct net_device       *dev;           /* FLOW_ACTION_REDIRECT */
 218                 struct {                                /* FLOW_ACTION_VLAN */
 219                         u16             vid;
 220                         __be16          proto;
 221                         u8              prio;
 222                 } vlan;
 223                 struct {                                /* FLOW_ACTION_VLAN_PUSH_ETH */
 224                         unsigned char dst[ETH_ALEN];
 225                         unsigned char src[ETH_ALEN];
 226                 } vlan_push_eth;
 227                 struct {                                /* FLOW_ACTION_MANGLE */
 228                                                         /* FLOW_ACTION_ADD */
 229                         enum flow_action_mangle_base htype;
 230                         u32             offset;
 231                         u32             mask;
 232                         u32             val;
 233                 } mangle;
 234                 struct ip_tunnel_info   *tunnel;        /* FLOW_ACTION_TUNNEL_ENCAP */
 235                 u32                     csum_flags;     /* FLOW_ACTION_CSUM */
 236                 u32                     mark;           /* FLOW_ACTION_MARK */
 237                 u16                     ptype;          /* FLOW_ACTION_PTYPE */
 238                 u32                     priority;       /* FLOW_ACTION_PRIORITY */
 239                 struct {                                /* FLOW_ACTION_QUEUE */
 240                         u32             ctx;
 241                         u32             index;
 242                         u8              vf;
 243                 } queue;
 244                 struct {                                /* FLOW_ACTION_SAMPLE */
 245                         struct psample_group    *psample_group;
 246                         u32                     rate;
 247                         u32                     trunc_size;
 248                         bool                    truncate;
 249                 } sample;
 250                 struct {                                /* FLOW_ACTION_POLICE */
 251                         u32                     burst;
 252                         u64                     rate_bytes_ps;
 253                         u64                     peakrate_bytes_ps;
 254                         u32                     avrate;
 255                         u16                     overhead;
 256                         u64                     burst_pkt;
 257                         u64                     rate_pkt_ps;
 258                         u32                     mtu;
 259                         struct {
 260                                 enum flow_action_id     act_id;
 261                                 u32                     extval;
 262                         } exceed, notexceed;
 263                 } police;
 264                 struct {                                /* FLOW_ACTION_CT */
 265                         int action;
 266                         u16 zone;
 267                         struct nf_flowtable *flow_table;
 268                 } ct;
 269                 struct {
 270                         unsigned long cookie;
 271                         u32 mark;
 272                         u32 labels[4];
 273                         bool orig_dir;
 274                 } ct_metadata;
 275                 struct {                                /* FLOW_ACTION_MPLS_PUSH */
 276                         u32             label;
 277                         __be16          proto;
 278                         u8              tc;
 279                         u8              bos;
 280                         u8              ttl;
 281                 } mpls_push;
 282                 struct {                                /* FLOW_ACTION_MPLS_POP */
 283                         __be16          proto;
 284                 } mpls_pop;
 285                 struct {                                /* FLOW_ACTION_MPLS_MANGLE */
 286                         u32             label;
 287                         u8              tc;
 288                         u8              bos;
 289                         u8              ttl;
 290                 } mpls_mangle;
 291                 struct {
 292                         s32             prio;
 293                         u64             basetime;
 294                         u64             cycletime;
 295                         u64             cycletimeext;
 296                         u32             num_entries;
 297                         struct action_gate_entry *entries;
 298                 } gate;
 299                 struct {                                /* FLOW_ACTION_PPPOE_PUSH */
 300                         u16             sid;
 301                 } pppoe;
 302         };
 303         struct flow_action_cookie *cookie; /* user defined action cookie */
 304 };
 305
 306 struct flow_action {
 307         unsigned int                    num_entries;
 308         struct flow_action_entry        entries[];
 309 };
 310
 311 static inline bool flow_action_has_entries(const struct flow_action *action)
 312 {
 313         return action->num_entries;
 314 }
 315
 316 /**
 317  * flow_offload_has_one_action() - check if exactly one action is present
 318  * @action: tc filter flow offload action
 319  *
 320  * Returns true if exactly one action is present.
 321  */
 322 static inline bool flow_offload_has_one_action(const struct flow_action *action)
 323 {
 324         return action->num_entries == 1;
 325 }
 326
 327 static inline bool flow_action_is_last_entry(const struct flow_action *action,
 328                                              const struct flow_action_entry *entry)
 329 {
 330         return entry == &action->entries[action->num_entries - 1];
 331 }
 332
 333 #define flow_action_for_each(__i, __act, __actions)                     \
 334         for (__i = 0, __act = &(__actions)->entries[0];                 \
 335              __i < (__actions)->num_entries;                            \
 336              __act = &(__actions)->entries[++__i])
 337
 338 static inline bool
 339 flow_action_mixed_hw_stats_check(const struct flow_action *action,
 340                                  struct netlink_ext_ack *extack)
 341 {
 342         const struct flow_action_entry *action_entry;
 343         u8 last_hw_stats;
 344         int i;
 345
 346         if (flow_offload_has_one_action(action))
 347                 return true;
 348
 349         flow_action_for_each(i, action_entry, action) {
 350                 if (i && action_entry->hw_stats != last_hw_stats) {
 351                         NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported");
 352                         return false;
 353                 }
 354                 last_hw_stats = action_entry->hw_stats;
 355         }
 356         return true;
 357 }
 358
 359 static inline const struct flow_action_entry *
 360 flow_action_first_entry_get(const struct flow_action *action)
 361 {
 362         WARN_ON(!flow_action_has_entries(action));
 363         return &action->entries[0];
 364 }
 365
 366 static inline bool
 367 __flow_action_hw_stats_check(const struct flow_action *action,
 368                              struct netlink_ext_ack *extack,
 369                              bool check_allow_bit,
 370                              enum flow_action_hw_stats_bit allow_bit)
 371 {
 372         const struct flow_action_entry *action_entry;
 373
 374         if (!flow_action_has_entries(action))
 375                 return true;
 376         if (!flow_action_mixed_hw_stats_check(action, extack))
 377                 return false;
 378
 379         action_entry = flow_action_first_entry_get(action);
 380
 381         /* Zero is not a legal value for hw_stats, catch anyone passing it */
 382         WARN_ON_ONCE(!action_entry->hw_stats);
 383
 384         if (!check_allow_bit &&
 385             ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
 386                 NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\"");
 387                 return false;
 388         } else if (check_allow_bit &&
 389                    !(action_entry->hw_stats & BIT(allow_bit))) {
 390                 NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type");
 391                 return false;
 392         }
 393         return true;
 394 }
 395
 396 static inline bool
 397 flow_action_hw_stats_check(const struct flow_action *action,
 398                            struct netlink_ext_ack *extack,
 399                            enum flow_action_hw_stats_bit allow_bit)
 400 {
 401         return __flow_action_hw_stats_check(action, extack, true, allow_bit);
 402 }
 403
 404 static inline bool
 405 flow_action_basic_hw_stats_check(const struct flow_action *action,
 406                                  struct netlink_ext_ack *extack)
 407 {
 408         return __flow_action_hw_stats_check(action, extack, false, 0);
 409 }
 410
 411 struct flow_rule {
 412         struct flow_match       match;
 413         struct flow_action      action;
 414 };
 415
 416 struct flow_rule *flow_rule_alloc(unsigned int num_actions);
 417
 418 static inline bool flow_rule_match_key(const struct flow_rule *rule,
 419                                        enum flow_dissector_key_id key)
 420 {
 421         return dissector_uses_key(rule->match.dissector, key);
 422 }
 423
 424 struct flow_stats {
 425         u64     pkts;
 426         u64     bytes;
 427         u64     drops;
 428         u64     lastused;
 429         enum flow_action_hw_stats used_hw_stats;
 430         bool used_hw_stats_valid;
 431 };
 432
 433 static inline void flow_stats_update(struct flow_stats *flow_stats,
 434                                      u64 bytes, u64 pkts,
 435                                      u64 drops, u64 lastused,
 436                                      enum flow_action_hw_stats used_hw_stats)
 437 {
 438         flow_stats->pkts        += pkts;
 439         flow_stats->bytes       += bytes;
 440         flow_stats->drops       += drops;
 441         flow_stats->lastused    = max_t(u64, flow_stats->lastused, lastused);
 442
 443         /* The driver should pass value with a maximum of one bit set.
 444          * Passing FLOW_ACTION_HW_STATS_ANY is invalid.
 445          */
 446         WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY);
 447         flow_stats->used_hw_stats |= used_hw_stats;
 448         flow_stats->used_hw_stats_valid = true;
 449 }
 450
 451 enum flow_block_command {
 452         FLOW_BLOCK_BIND,
 453         FLOW_BLOCK_UNBIND,
 454 };
 455
 456 enum flow_block_binder_type {
 457         FLOW_BLOCK_BINDER_TYPE_UNSPEC,
 458         FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
 459         FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
 460         FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
 461         FLOW_BLOCK_BINDER_TYPE_RED_MARK,
 462 };
 463
 464 struct flow_block {
 465         struct list_head cb_list;
 466 };
 467
 468 struct netlink_ext_ack;
 469
 470 struct flow_block_offload {
 471         enum flow_block_command command;
 472         enum flow_block_binder_type binder_type;
 473         bool block_shared;
 474         bool unlocked_driver_cb;
 475         struct net *net;
 476         struct flow_block *block;
 477         struct list_head cb_list;
 478         struct list_head *driver_block_list;
 479         struct netlink_ext_ack *extack;
 480         struct Qdisc *sch;
 481         struct list_head *cb_list_head;
 482 };
 483
 484 enum tc_setup_type;
 485 typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
 486                             void *cb_priv);
 487
 488 struct flow_block_cb;
 489
 490 struct flow_block_indr {
 491         struct list_head                list;
 492         struct net_device               *dev;
 493         struct Qdisc                    *sch;
 494         enum flow_block_binder_type     binder_type;
 495         void                            *data;
 496         void                            *cb_priv;
 497         void                            (*cleanup)(struct flow_block_cb *block_cb);
 498 };
 499
 500 struct flow_block_cb {
 501         struct list_head        driver_list;
 502         struct list_head        list;
 503         flow_setup_cb_t         *cb;
 504         void                    *cb_ident;
 505         void                    *cb_priv;
 506         void                    (*release)(void *cb_priv);
 507         struct flow_block_indr  indr;
 508         unsigned int            refcnt;
 509 };
 510
 511 struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
 512                                           void *cb_ident, void *cb_priv,
 513                                           void (*release)(void *cb_priv));
 514 struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
 515                                                void *cb_ident, void *cb_priv,
 516                                                void (*release)(void *cb_priv),
 517                                                struct flow_block_offload *bo,
 518                                                struct net_device *dev,
 519                                                struct Qdisc *sch, void *data,
 520                                                void *indr_cb_priv,
 521                                                void (*cleanup)(struct flow_block_cb *block_cb));
 522 void flow_block_cb_free(struct flow_block_cb *block_cb);
 523
 524 struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
 525                                            flow_setup_cb_t *cb, void *cb_ident);
 526
 527 void *flow_block_cb_priv(struct flow_block_cb *block_cb);
 528 void flow_block_cb_incref(struct flow_block_cb *block_cb);
 529 unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
 530
 531 static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
 532                                      struct flow_block_offload *offload)
 533 {
 534         list_add_tail(&block_cb->list, &offload->cb_list);
 535 }
 536
 537 static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
 538                                         struct flow_block_offload *offload)
 539 {
 540         list_move(&block_cb->list, &offload->cb_list);
 541 }
 542
 543 static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb,
 544                                              struct flow_block_offload *offload)
 545 {
 546         list_del(&block_cb->indr.list);
 547         list_move(&block_cb->list, &offload->cb_list);
 548 }
 549
 550 bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
 551                            struct list_head *driver_block_list);
 552
 553 int flow_block_cb_setup_simple(struct flow_block_offload *f,
 554                                struct list_head *driver_list,
 555                                flow_setup_cb_t *cb,
 556                                void *cb_ident, void *cb_priv, bool ingress_only);
 557
 558 enum flow_cls_command {
 559         FLOW_CLS_REPLACE,
 560         FLOW_CLS_DESTROY,
 561         FLOW_CLS_STATS,
 562         FLOW_CLS_TMPLT_CREATE,
 563         FLOW_CLS_TMPLT_DESTROY,
 564 };
 565
 566 struct flow_cls_common_offload {
 567         u32 chain_index;
 568         __be16 protocol;
 569         u32 prio;
 570         struct netlink_ext_ack *extack;
 571 };
 572
 573 struct flow_cls_offload {
 574         struct flow_cls_common_offload common;
 575         enum flow_cls_command command;
 576         unsigned long cookie;
 577         struct flow_rule *rule;
 578         struct flow_stats stats;
 579         u32 classid;
 580 };
 581
 582 enum offload_act_command  {
 583         FLOW_ACT_REPLACE,
 584         FLOW_ACT_DESTROY,
 585         FLOW_ACT_STATS,
 586 };
 587
 588 struct flow_offload_action {
 589         struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/
 590         enum offload_act_command  command;
 591         enum flow_action_id id;
 592         u32 index;
 593         struct flow_stats stats;
 594         struct flow_action action;
 595 };
 596
 597 struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
 598
 599 static inline struct flow_rule *
 600 flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd)
 601 {
 602         return flow_cmd->rule;
 603 }
 604
 605 static inline void flow_block_init(struct flow_block *flow_block)
 606 {
 607         INIT_LIST_HEAD(&flow_block->cb_list);
 608 }
 609
 610 typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
 611                                       enum tc_setup_type type, void *type_data,
 612                                       void *data,
 613                                       void (*cleanup)(struct flow_block_cb *block_cb));
 614
 615 int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
 616 void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
 617                               void (*release)(void *cb_priv));
 618 int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
 619                                 enum tc_setup_type type, void *data,
 620                                 struct flow_block_offload *bo,
 621                                 void (*cleanup)(struct flow_block_cb *block_cb));
 622 bool flow_indr_dev_exists(void);
 623
 624 #endif /* _NET_FLOW_OFFLOAD_H */