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