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_arp {
  36         struct flow_dissector_key_arp *key, *mask;
  37 };
  38
  39 struct flow_match_ipv4_addrs {
  40         struct flow_dissector_key_ipv4_addrs *key, *mask;
  41 };
  42
  43 struct flow_match_ipv6_addrs {
  44         struct flow_dissector_key_ipv6_addrs *key, *mask;
  45 };
  46
  47 struct flow_match_ip {
  48         struct flow_dissector_key_ip *key, *mask;
  49 };
  50
  51 struct flow_match_ports {
  52         struct flow_dissector_key_ports *key, *mask;
  53 };
  54
  55 struct flow_match_ports_range {
  56         struct flow_dissector_key_ports_range *key, *mask;
  57 };
  58
  59 struct flow_match_icmp {
  60         struct flow_dissector_key_icmp *key, *mask;
  61 };
  62
  63 struct flow_match_tcp {
  64         struct flow_dissector_key_tcp *key, *mask;
  65 };
  66
  67 struct flow_match_ipsec {
  68         struct flow_dissector_key_ipsec *key, *mask;
  69 };
  70
  71 struct flow_match_mpls {
  72         struct flow_dissector_key_mpls *key, *mask;
  73 };
  74
  75 struct flow_match_enc_keyid {
  76         struct flow_dissector_key_keyid *key, *mask;
  77 };
  78
  79 struct flow_match_enc_opts {
  80         struct flow_dissector_key_enc_opts *key, *mask;
  81 };
  82
  83 struct flow_match_ct {
  84         struct flow_dissector_key_ct *key, *mask;
  85 };
  86
  87 struct flow_match_pppoe {
  88         struct flow_dissector_key_pppoe *key, *mask;
  89 };
  90
  91 struct flow_match_l2tpv3 {
  92         struct flow_dissector_key_l2tpv3 *key, *mask;
  93 };
  94
  95 struct flow_rule;
  96
  97 void flow_rule_match_meta(const struct flow_rule *rule,
  98                           struct flow_match_meta *out);
  99 void flow_rule_match_basic(const struct flow_rule *rule,
 100                            struct flow_match_basic *out);
 101 void flow_rule_match_control(const struct flow_rule *rule,
 102                              struct flow_match_control *out);
 103 void flow_rule_match_eth_addrs(const struct flow_rule *rule,
 104                                struct flow_match_eth_addrs *out);
 105 void flow_rule_match_vlan(const struct flow_rule *rule,
 106                           struct flow_match_vlan *out);
 107 void flow_rule_match_cvlan(const struct flow_rule *rule,
 108                            struct flow_match_vlan *out);
 109 void flow_rule_match_arp(const struct flow_rule *rule,
 110                          struct flow_match_arp *out);
 111 void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
 112                                 struct flow_match_ipv4_addrs *out);
 113 void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
 114                                 struct flow_match_ipv6_addrs *out);
 115 void flow_rule_match_ip(const struct flow_rule *rule,
 116                         struct flow_match_ip *out);
 117 void flow_rule_match_ports(const struct flow_rule *rule,
 118                            struct flow_match_ports *out);
 119 void flow_rule_match_ports_range(const struct flow_rule *rule,
 120                                  struct flow_match_ports_range *out);
 121 void flow_rule_match_tcp(const struct flow_rule *rule,
 122                          struct flow_match_tcp *out);
 123 void flow_rule_match_ipsec(const struct flow_rule *rule,
 124                            struct flow_match_ipsec *out);
 125 void flow_rule_match_icmp(const struct flow_rule *rule,
 126                           struct flow_match_icmp *out);
 127 void flow_rule_match_mpls(const struct flow_rule *rule,
 128                           struct flow_match_mpls *out);
 129 void flow_rule_match_enc_control(const struct flow_rule *rule,
 130                                  struct flow_match_control *out);
 131 void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
 132                                     struct flow_match_ipv4_addrs *out);
 133 void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
 134                                     struct flow_match_ipv6_addrs *out);
 135 void flow_rule_match_enc_ip(const struct flow_rule *rule,
 136                             struct flow_match_ip *out);
 137 void flow_rule_match_enc_ports(const struct flow_rule *rule,
 138                                struct flow_match_ports *out);
 139 void flow_rule_match_enc_keyid(const struct flow_rule *rule,
 140                                struct flow_match_enc_keyid *out);
 141 void flow_rule_match_enc_opts(const struct flow_rule *rule,
 142                               struct flow_match_enc_opts *out);
 143 void flow_rule_match_ct(const struct flow_rule *rule,
 144                         struct flow_match_ct *out);
 145 void flow_rule_match_pppoe(const struct flow_rule *rule,
 146                            struct flow_match_pppoe *out);
 147 void flow_rule_match_l2tpv3(const struct flow_rule *rule,
 148                             struct flow_match_l2tpv3 *out);
 149
 150 enum flow_action_id {
 151         FLOW_ACTION_ACCEPT              = 0,
 152         FLOW_ACTION_DROP,
 153         FLOW_ACTION_TRAP,
 154         FLOW_ACTION_GOTO,
 155         FLOW_ACTION_REDIRECT,
 156         FLOW_ACTION_MIRRED,
 157         FLOW_ACTION_REDIRECT_INGRESS,
 158         FLOW_ACTION_MIRRED_INGRESS,
 159         FLOW_ACTION_VLAN_PUSH,
 160         FLOW_ACTION_VLAN_POP,
 161         FLOW_ACTION_VLAN_MANGLE,
 162         FLOW_ACTION_TUNNEL_ENCAP,
 163         FLOW_ACTION_TUNNEL_DECAP,
 164         FLOW_ACTION_MANGLE,
 165         FLOW_ACTION_ADD,
 166         FLOW_ACTION_CSUM,
 167         FLOW_ACTION_MARK,
 168         FLOW_ACTION_PTYPE,
 169         FLOW_ACTION_PRIORITY,
 170         FLOW_ACTION_RX_QUEUE_MAPPING,
 171         FLOW_ACTION_WAKE,
 172         FLOW_ACTION_QUEUE,
 173         FLOW_ACTION_SAMPLE,
 174         FLOW_ACTION_POLICE,
 175         FLOW_ACTION_CT,
 176         FLOW_ACTION_CT_METADATA,
 177         FLOW_ACTION_MPLS_PUSH,
 178         FLOW_ACTION_MPLS_POP,
 179         FLOW_ACTION_MPLS_MANGLE,
 180         FLOW_ACTION_GATE,
 181         FLOW_ACTION_PPPOE_PUSH,
 182         FLOW_ACTION_JUMP,
 183         FLOW_ACTION_PIPE,
 184         FLOW_ACTION_VLAN_PUSH_ETH,
 185         FLOW_ACTION_VLAN_POP_ETH,
 186         FLOW_ACTION_CONTINUE,
 187         NUM_FLOW_ACTIONS,
 188 };
 189
 190 /* This is mirroring enum pedit_header_type definition for easy mapping between
 191  * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
 192  * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
 193  */
 194 enum flow_action_mangle_base {
 195         FLOW_ACT_MANGLE_UNSPEC          = 0,
 196         FLOW_ACT_MANGLE_HDR_TYPE_ETH,
 197         FLOW_ACT_MANGLE_HDR_TYPE_IP4,
 198         FLOW_ACT_MANGLE_HDR_TYPE_IP6,
 199         FLOW_ACT_MANGLE_HDR_TYPE_TCP,
 200         FLOW_ACT_MANGLE_HDR_TYPE_UDP,
 201 };
 202
 203 enum flow_action_hw_stats_bit {
 204         FLOW_ACTION_HW_STATS_IMMEDIATE_BIT,
 205         FLOW_ACTION_HW_STATS_DELAYED_BIT,
 206         FLOW_ACTION_HW_STATS_DISABLED_BIT,
 207
 208         FLOW_ACTION_HW_STATS_NUM_BITS
 209 };
 210
 211 enum flow_action_hw_stats {
 212         FLOW_ACTION_HW_STATS_IMMEDIATE =
 213                 BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT),
 214         FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT),
 215         FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE |
 216                                    FLOW_ACTION_HW_STATS_DELAYED,
 217         FLOW_ACTION_HW_STATS_DISABLED =
 218                 BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT),
 219         FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,
 220 };
 221
 222 typedef void (*action_destr)(void *priv);
 223
 224 struct flow_action_cookie {
 225         u32 cookie_len;
 226         u8 cookie[];
 227 };
 228
 229 struct flow_action_cookie *flow_action_cookie_create(void *data,
 230                                                      unsigned int len,
 231                                                      gfp_t gfp);
 232 void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
 233
 234 struct flow_action_entry {
 235         enum flow_action_id             id;
 236         u32                             hw_index;
 237         unsigned long                   cookie;
 238         u64                             miss_cookie;
 239         enum flow_action_hw_stats       hw_stats;
 240         action_destr                    destructor;
 241         void                            *destructor_priv;
 242         union {
 243                 u32                     chain_index;    /* FLOW_ACTION_GOTO */
 244                 struct net_device       *dev;           /* FLOW_ACTION_REDIRECT */
 245                 struct {                                /* FLOW_ACTION_VLAN */
 246                         u16             vid;
 247                         __be16          proto;
 248                         u8              prio;
 249                 } vlan;
 250                 struct {                                /* FLOW_ACTION_VLAN_PUSH_ETH */
 251                         unsigned char dst[ETH_ALEN];
 252                         unsigned char src[ETH_ALEN];
 253                 } vlan_push_eth;
 254                 struct {                                /* FLOW_ACTION_MANGLE */
 255                                                         /* FLOW_ACTION_ADD */
 256                         enum flow_action_mangle_base htype;
 257                         u32             offset;
 258                         u32             mask;
 259                         u32             val;
 260                 } mangle;
 261                 struct ip_tunnel_info   *tunnel;        /* FLOW_ACTION_TUNNEL_ENCAP */
 262                 u32                     csum_flags;     /* FLOW_ACTION_CSUM */
 263                 u32                     mark;           /* FLOW_ACTION_MARK */
 264                 u16                     ptype;          /* FLOW_ACTION_PTYPE */
 265                 u16                     rx_queue;       /* FLOW_ACTION_RX_QUEUE_MAPPING */
 266                 u32                     priority;       /* FLOW_ACTION_PRIORITY */
 267                 struct {                                /* FLOW_ACTION_QUEUE */
 268                         u32             ctx;
 269                         u32             index;
 270                         u8              vf;
 271                 } queue;
 272                 struct {                                /* FLOW_ACTION_SAMPLE */
 273                         struct psample_group    *psample_group;
 274                         u32                     rate;
 275                         u32                     trunc_size;
 276                         bool                    truncate;
 277                 } sample;
 278                 struct {                                /* FLOW_ACTION_POLICE */
 279                         u32                     burst;
 280                         u64                     rate_bytes_ps;
 281                         u64                     peakrate_bytes_ps;
 282                         u32                     avrate;
 283                         u16                     overhead;
 284                         u64                     burst_pkt;
 285                         u64                     rate_pkt_ps;
 286                         u32                     mtu;
 287                         struct {
 288                                 enum flow_action_id     act_id;
 289                                 u32                     extval;
 290                         } exceed, notexceed;
 291                 } police;
 292                 struct {                                /* FLOW_ACTION_CT */
 293                         int action;
 294                         u16 zone;
 295                         struct nf_flowtable *flow_table;
 296                 } ct;
 297                 struct {
 298                         unsigned long cookie;
 299                         u32 mark;
 300                         u32 labels[4];
 301                         bool orig_dir;
 302                 } ct_metadata;
 303                 struct {                                /* FLOW_ACTION_MPLS_PUSH */
 304                         u32             label;
 305                         __be16          proto;
 306                         u8              tc;
 307                         u8              bos;
 308                         u8              ttl;
 309                 } mpls_push;
 310                 struct {                                /* FLOW_ACTION_MPLS_POP */
 311                         __be16          proto;
 312                 } mpls_pop;
 313                 struct {                                /* FLOW_ACTION_MPLS_MANGLE */
 314                         u32             label;
 315                         u8              tc;
 316                         u8              bos;
 317                         u8              ttl;
 318                 } mpls_mangle;
 319                 struct {
 320                         s32             prio;
 321                         u64             basetime;
 322                         u64             cycletime;
 323                         u64             cycletimeext;
 324                         u32             num_entries;
 325                         struct action_gate_entry *entries;
 326                 } gate;
 327                 struct {                                /* FLOW_ACTION_PPPOE_PUSH */
 328                         u16             sid;
 329                 } pppoe;
 330         };
 331         struct flow_action_cookie *user_cookie; /* user defined action cookie */
 332 };
 333
 334 struct flow_action {
 335         unsigned int                    num_entries;
 336         struct flow_action_entry        entries[];
 337 };
 338
 339 static inline bool flow_action_has_entries(const struct flow_action *action)
 340 {
 341         return action->num_entries;
 342 }
 343
 344 /**
 345  * flow_offload_has_one_action() - check if exactly one action is present
 346  * @action: tc filter flow offload action
 347  *
 348  * Returns true if exactly one action is present.
 349  */
 350 static inline bool flow_offload_has_one_action(const struct flow_action *action)
 351 {
 352         return action->num_entries == 1;
 353 }
 354
 355 static inline bool flow_action_is_last_entry(const struct flow_action *action,
 356                                              const struct flow_action_entry *entry)
 357 {
 358         return entry == &action->entries[action->num_entries - 1];
 359 }
 360
 361 #define flow_action_for_each(__i, __act, __actions)                     \
 362         for (__i = 0, __act = &(__actions)->entries[0];                 \
 363              __i < (__actions)->num_entries;                            \
 364              __act = &(__actions)->entries[++__i])
 365
 366 static inline bool
 367 flow_action_mixed_hw_stats_check(const struct flow_action *action,
 368                                  struct netlink_ext_ack *extack)
 369 {
 370         const struct flow_action_entry *action_entry;
 371         u8 last_hw_stats;
 372         int i;
 373
 374         if (flow_offload_has_one_action(action))
 375                 return true;
 376
 377         flow_action_for_each(i, action_entry, action) {
 378                 if (i && action_entry->hw_stats != last_hw_stats) {
 379                         NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported");
 380                         return false;
 381                 }
 382                 last_hw_stats = action_entry->hw_stats;
 383         }
 384         return true;
 385 }
 386
 387 static inline const struct flow_action_entry *
 388 flow_action_first_entry_get(const struct flow_action *action)
 389 {
 390         WARN_ON(!flow_action_has_entries(action));
 391         return &action->entries[0];
 392 }
 393
 394 static inline bool
 395 __flow_action_hw_stats_check(const struct flow_action *action,
 396                              struct netlink_ext_ack *extack,
 397                              bool check_allow_bit,
 398                              enum flow_action_hw_stats_bit allow_bit)
 399 {
 400         const struct flow_action_entry *action_entry;
 401
 402         if (!flow_action_has_entries(action))
 403                 return true;
 404         if (!flow_action_mixed_hw_stats_check(action, extack))
 405                 return false;
 406
 407         action_entry = flow_action_first_entry_get(action);
 408
 409         /* Zero is not a legal value for hw_stats, catch anyone passing it */
 410         WARN_ON_ONCE(!action_entry->hw_stats);
 411
 412         if (!check_allow_bit &&
 413             ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
 414                 NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\"");
 415                 return false;
 416         } else if (check_allow_bit &&
 417                    !(action_entry->hw_stats & BIT(allow_bit))) {
 418                 NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type");
 419                 return false;
 420         }
 421         return true;
 422 }
 423
 424 static inline bool
 425 flow_action_hw_stats_check(const struct flow_action *action,
 426                            struct netlink_ext_ack *extack,
 427                            enum flow_action_hw_stats_bit allow_bit)
 428 {
 429         return __flow_action_hw_stats_check(action, extack, true, allow_bit);
 430 }
 431
 432 static inline bool
 433 flow_action_basic_hw_stats_check(const struct flow_action *action,
 434                                  struct netlink_ext_ack *extack)
 435 {
 436         return __flow_action_hw_stats_check(action, extack, false, 0);
 437 }
 438
 439 struct flow_rule {
 440         struct flow_match       match;
 441         struct flow_action      action;
 442 };
 443
 444 struct flow_rule *flow_rule_alloc(unsigned int num_actions);
 445
 446 static inline bool flow_rule_match_key(const struct flow_rule *rule,
 447                                        enum flow_dissector_key_id key)
 448 {
 449         return dissector_uses_key(rule->match.dissector, key);
 450 }
 451
 452 struct flow_stats {
 453         u64     pkts;
 454         u64     bytes;
 455         u64     drops;
 456         u64     lastused;
 457         enum flow_action_hw_stats used_hw_stats;
 458         bool used_hw_stats_valid;
 459 };
 460
 461 static inline void flow_stats_update(struct flow_stats *flow_stats,
 462                                      u64 bytes, u64 pkts,
 463                                      u64 drops, u64 lastused,
 464                                      enum flow_action_hw_stats used_hw_stats)
 465 {
 466         flow_stats->pkts        += pkts;
 467         flow_stats->bytes       += bytes;
 468         flow_stats->drops       += drops;
 469         flow_stats->lastused    = max_t(u64, flow_stats->lastused, lastused);
 470
 471         /* The driver should pass value with a maximum of one bit set.
 472          * Passing FLOW_ACTION_HW_STATS_ANY is invalid.
 473          */
 474         WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY);
 475         flow_stats->used_hw_stats |= used_hw_stats;
 476         flow_stats->used_hw_stats_valid = true;
 477 }
 478
 479 enum flow_block_command {
 480         FLOW_BLOCK_BIND,
 481         FLOW_BLOCK_UNBIND,
 482 };
 483
 484 enum flow_block_binder_type {
 485         FLOW_BLOCK_BINDER_TYPE_UNSPEC,
 486         FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
 487         FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
 488         FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
 489         FLOW_BLOCK_BINDER_TYPE_RED_MARK,
 490 };
 491
 492 struct flow_block {
 493         struct list_head cb_list;
 494 };
 495
 496 struct netlink_ext_ack;
 497
 498 struct flow_block_offload {
 499         enum flow_block_command command;
 500         enum flow_block_binder_type binder_type;
 501         bool block_shared;
 502         bool unlocked_driver_cb;
 503         struct net *net;
 504         struct flow_block *block;
 505         struct list_head cb_list;
 506         struct list_head *driver_block_list;
 507         struct netlink_ext_ack *extack;
 508         struct Qdisc *sch;
 509         struct list_head *cb_list_head;
 510 };
 511
 512 enum tc_setup_type;
 513 typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
 514                             void *cb_priv);
 515
 516 struct flow_block_cb;
 517
 518 struct flow_block_indr {
 519         struct list_head                list;
 520         struct net_device               *dev;
 521         struct Qdisc                    *sch;
 522         enum flow_block_binder_type     binder_type;
 523         void                            *data;
 524         void                            *cb_priv;
 525         void                            (*cleanup)(struct flow_block_cb *block_cb);
 526 };
 527
 528 struct flow_block_cb {
 529         struct list_head        driver_list;
 530         struct list_head        list;
 531         flow_setup_cb_t         *cb;
 532         void                    *cb_ident;
 533         void                    *cb_priv;
 534         void                    (*release)(void *cb_priv);
 535         struct flow_block_indr  indr;
 536         unsigned int            refcnt;
 537 };
 538
 539 struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
 540                                           void *cb_ident, void *cb_priv,
 541                                           void (*release)(void *cb_priv));
 542 struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
 543                                                void *cb_ident, void *cb_priv,
 544                                                void (*release)(void *cb_priv),
 545                                                struct flow_block_offload *bo,
 546                                                struct net_device *dev,
 547                                                struct Qdisc *sch, void *data,
 548                                                void *indr_cb_priv,
 549                                                void (*cleanup)(struct flow_block_cb *block_cb));
 550 void flow_block_cb_free(struct flow_block_cb *block_cb);
 551
 552 struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
 553                                            flow_setup_cb_t *cb, void *cb_ident);
 554
 555 void *flow_block_cb_priv(struct flow_block_cb *block_cb);
 556 void flow_block_cb_incref(struct flow_block_cb *block_cb);
 557 unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
 558
 559 static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
 560                                      struct flow_block_offload *offload)
 561 {
 562         list_add_tail(&block_cb->list, &offload->cb_list);
 563 }
 564
 565 static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
 566                                         struct flow_block_offload *offload)
 567 {
 568         list_move(&block_cb->list, &offload->cb_list);
 569 }
 570
 571 static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb,
 572                                              struct flow_block_offload *offload)
 573 {
 574         list_del(&block_cb->indr.list);
 575         list_move(&block_cb->list, &offload->cb_list);
 576 }
 577
 578 bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
 579                            struct list_head *driver_block_list);
 580
 581 int flow_block_cb_setup_simple(struct flow_block_offload *f,
 582                                struct list_head *driver_list,
 583                                flow_setup_cb_t *cb,
 584                                void *cb_ident, void *cb_priv, bool ingress_only);
 585
 586 enum flow_cls_command {
 587         FLOW_CLS_REPLACE,
 588         FLOW_CLS_DESTROY,
 589         FLOW_CLS_STATS,
 590         FLOW_CLS_TMPLT_CREATE,
 591         FLOW_CLS_TMPLT_DESTROY,
 592 };
 593
 594 struct flow_cls_common_offload {
 595         u32 chain_index;
 596         __be16 protocol;
 597         u32 prio;
 598         struct netlink_ext_ack *extack;
 599 };
 600
 601 struct flow_cls_offload {
 602         struct flow_cls_common_offload common;
 603         enum flow_cls_command command;
 604         bool use_act_stats;
 605         unsigned long cookie;
 606         struct flow_rule *rule;
 607         struct flow_stats stats;
 608         u32 classid;
 609 };
 610
 611 enum offload_act_command  {
 612         FLOW_ACT_REPLACE,
 613         FLOW_ACT_DESTROY,
 614         FLOW_ACT_STATS,
 615 };
 616
 617 struct flow_offload_action {
 618         struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/
 619         enum offload_act_command  command;
 620         enum flow_action_id id;
 621         u32 index;
 622         unsigned long cookie;
 623         struct flow_stats stats;
 624         struct flow_action action;
 625 };
 626
 627 struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
 628
 629 static inline struct flow_rule *
 630 flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd)
 631 {
 632         return flow_cmd->rule;
 633 }
 634
 635 static inline void flow_block_init(struct flow_block *flow_block)
 636 {
 637         INIT_LIST_HEAD(&flow_block->cb_list);
 638 }
 639
 640 typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
 641                                       enum tc_setup_type type, void *type_data,
 642                                       void *data,
 643                                       void (*cleanup)(struct flow_block_cb *block_cb));
 644
 645 int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
 646 void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
 647                               void (*release)(void *cb_priv));
 648 int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
 649                                 enum tc_setup_type type, void *data,
 650                                 struct flow_block_offload *bo,
 651                                 void (*cleanup)(struct flow_block_cb *block_cb));
 652 bool flow_indr_dev_exists(void);
 653
 654 #endif /* _NET_FLOW_OFFLOAD_H */