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