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[] __counted_by(num_entries); 337 }; 338 flow_action_has_entries(const struct flow_action * action)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 * Return: true if exactly one action is present. 349 */ flow_offload_has_one_action(const struct flow_action * action)350 static inline bool flow_offload_has_one_action(const struct flow_action *action) 351 { 352 return action->num_entries == 1; 353 } 354 flow_action_is_last_entry(const struct flow_action * action,const struct flow_action_entry * entry)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 flow_action_mixed_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack)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 * flow_action_first_entry_get(const struct flow_action * action)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 __flow_action_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack,bool check_allow_bit,enum flow_action_hw_stats_bit allow_bit)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 flow_action_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack,enum flow_action_hw_stats_bit allow_bit)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 flow_action_basic_hw_stats_check(const struct flow_action * action,struct netlink_ext_ack * extack)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 flow_rule_match_key(const struct flow_rule * rule,enum flow_dissector_key_id key)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 /** 453 * flow_rule_is_supp_control_flags() - check for supported control flags 454 * @supp_flags: control flags supported by driver 455 * @ctrl_flags: control flags present in rule 456 * @extack: The netlink extended ACK for reporting errors. 457 * 458 * Return: true if only supported control flags are set, false otherwise. 459 */ flow_rule_is_supp_control_flags(const u32 supp_flags,const u32 ctrl_flags,struct netlink_ext_ack * extack)460 static inline bool flow_rule_is_supp_control_flags(const u32 supp_flags, 461 const u32 ctrl_flags, 462 struct netlink_ext_ack *extack) 463 { 464 if (likely((ctrl_flags & ~supp_flags) == 0)) 465 return true; 466 467 NL_SET_ERR_MSG_FMT_MOD(extack, 468 "Unsupported match on control.flags %#x", 469 ctrl_flags); 470 471 return false; 472 } 473 474 /** 475 * flow_rule_is_supp_enc_control_flags() - check for supported control flags 476 * @supp_enc_flags: encapsulation control flags supported by driver 477 * @enc_ctrl_flags: encapsulation control flags present in rule 478 * @extack: The netlink extended ACK for reporting errors. 479 * 480 * Return: true if only supported control flags are set, false otherwise. 481 */ flow_rule_is_supp_enc_control_flags(const u32 supp_enc_flags,const u32 enc_ctrl_flags,struct netlink_ext_ack * extack)482 static inline bool flow_rule_is_supp_enc_control_flags(const u32 supp_enc_flags, 483 const u32 enc_ctrl_flags, 484 struct netlink_ext_ack *extack) 485 { 486 if (likely((enc_ctrl_flags & ~supp_enc_flags) == 0)) 487 return true; 488 489 NL_SET_ERR_MSG_FMT_MOD(extack, 490 "Unsupported match on enc_control.flags %#x", 491 enc_ctrl_flags); 492 493 return false; 494 } 495 496 /** 497 * flow_rule_has_control_flags() - check for presence of any control flags 498 * @ctrl_flags: control flags present in rule 499 * @extack: The netlink extended ACK for reporting errors. 500 * 501 * Return: true if control flags are set, false otherwise. 502 */ flow_rule_has_control_flags(const u32 ctrl_flags,struct netlink_ext_ack * extack)503 static inline bool flow_rule_has_control_flags(const u32 ctrl_flags, 504 struct netlink_ext_ack *extack) 505 { 506 return !flow_rule_is_supp_control_flags(0, ctrl_flags, extack); 507 } 508 509 /** 510 * flow_rule_has_enc_control_flags() - check for presence of any control flags 511 * @enc_ctrl_flags: encapsulation control flags present in rule 512 * @extack: The netlink extended ACK for reporting errors. 513 * 514 * Return: true if control flags are set, false otherwise. 515 */ flow_rule_has_enc_control_flags(const u32 enc_ctrl_flags,struct netlink_ext_ack * extack)516 static inline bool flow_rule_has_enc_control_flags(const u32 enc_ctrl_flags, 517 struct netlink_ext_ack *extack) 518 { 519 return !flow_rule_is_supp_enc_control_flags(0, enc_ctrl_flags, extack); 520 } 521 522 /** 523 * flow_rule_match_has_control_flags() - match and check for any control flags 524 * @rule: The flow_rule under evaluation. 525 * @extack: The netlink extended ACK for reporting errors. 526 * 527 * Return: true if control flags are set, false otherwise. 528 */ flow_rule_match_has_control_flags(struct flow_rule * rule,struct netlink_ext_ack * extack)529 static inline bool flow_rule_match_has_control_flags(struct flow_rule *rule, 530 struct netlink_ext_ack *extack) 531 { 532 struct flow_match_control match; 533 534 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) 535 return false; 536 537 flow_rule_match_control(rule, &match); 538 539 return flow_rule_has_control_flags(match.mask->flags, extack); 540 } 541 542 struct flow_stats { 543 u64 pkts; 544 u64 bytes; 545 u64 drops; 546 u64 lastused; 547 enum flow_action_hw_stats used_hw_stats; 548 bool used_hw_stats_valid; 549 }; 550 flow_stats_update(struct flow_stats * flow_stats,u64 bytes,u64 pkts,u64 drops,u64 lastused,enum flow_action_hw_stats used_hw_stats)551 static inline void flow_stats_update(struct flow_stats *flow_stats, 552 u64 bytes, u64 pkts, 553 u64 drops, u64 lastused, 554 enum flow_action_hw_stats used_hw_stats) 555 { 556 flow_stats->pkts += pkts; 557 flow_stats->bytes += bytes; 558 flow_stats->drops += drops; 559 flow_stats->lastused = max_t(u64, flow_stats->lastused, lastused); 560 561 /* The driver should pass value with a maximum of one bit set. 562 * Passing FLOW_ACTION_HW_STATS_ANY is invalid. 563 */ 564 WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY); 565 flow_stats->used_hw_stats |= used_hw_stats; 566 flow_stats->used_hw_stats_valid = true; 567 } 568 569 enum flow_block_command { 570 FLOW_BLOCK_BIND, 571 FLOW_BLOCK_UNBIND, 572 }; 573 574 enum flow_block_binder_type { 575 FLOW_BLOCK_BINDER_TYPE_UNSPEC, 576 FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS, 577 FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS, 578 FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP, 579 FLOW_BLOCK_BINDER_TYPE_RED_MARK, 580 }; 581 582 struct flow_block { 583 struct list_head cb_list; 584 }; 585 586 struct netlink_ext_ack; 587 588 struct flow_block_offload { 589 enum flow_block_command command; 590 enum flow_block_binder_type binder_type; 591 bool block_shared; 592 bool unlocked_driver_cb; 593 struct net *net; 594 struct flow_block *block; 595 struct list_head cb_list; 596 struct list_head *driver_block_list; 597 struct netlink_ext_ack *extack; 598 struct Qdisc *sch; 599 struct list_head *cb_list_head; 600 }; 601 602 enum tc_setup_type; 603 typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data, 604 void *cb_priv); 605 606 struct flow_block_cb; 607 608 struct flow_block_indr { 609 struct list_head list; 610 struct net_device *dev; 611 struct Qdisc *sch; 612 enum flow_block_binder_type binder_type; 613 void *data; 614 void *cb_priv; 615 void (*cleanup)(struct flow_block_cb *block_cb); 616 }; 617 618 struct flow_block_cb { 619 struct list_head driver_list; 620 struct list_head list; 621 flow_setup_cb_t *cb; 622 void *cb_ident; 623 void *cb_priv; 624 void (*release)(void *cb_priv); 625 struct flow_block_indr indr; 626 unsigned int refcnt; 627 }; 628 629 struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb, 630 void *cb_ident, void *cb_priv, 631 void (*release)(void *cb_priv)); 632 struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb, 633 void *cb_ident, void *cb_priv, 634 void (*release)(void *cb_priv), 635 struct flow_block_offload *bo, 636 struct net_device *dev, 637 struct Qdisc *sch, void *data, 638 void *indr_cb_priv, 639 void (*cleanup)(struct flow_block_cb *block_cb)); 640 void flow_block_cb_free(struct flow_block_cb *block_cb); 641 642 struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block, 643 flow_setup_cb_t *cb, void *cb_ident); 644 645 void *flow_block_cb_priv(struct flow_block_cb *block_cb); 646 void flow_block_cb_incref(struct flow_block_cb *block_cb); 647 unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb); 648 flow_block_cb_add(struct flow_block_cb * block_cb,struct flow_block_offload * offload)649 static inline void flow_block_cb_add(struct flow_block_cb *block_cb, 650 struct flow_block_offload *offload) 651 { 652 list_add_tail(&block_cb->list, &offload->cb_list); 653 } 654 flow_block_cb_remove(struct flow_block_cb * block_cb,struct flow_block_offload * offload)655 static inline void flow_block_cb_remove(struct flow_block_cb *block_cb, 656 struct flow_block_offload *offload) 657 { 658 list_move(&block_cb->list, &offload->cb_list); 659 } 660 flow_indr_block_cb_remove(struct flow_block_cb * block_cb,struct flow_block_offload * offload)661 static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb, 662 struct flow_block_offload *offload) 663 { 664 list_del(&block_cb->indr.list); 665 list_move(&block_cb->list, &offload->cb_list); 666 } 667 668 bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident, 669 struct list_head *driver_block_list); 670 671 int flow_block_cb_setup_simple(struct flow_block_offload *f, 672 struct list_head *driver_list, 673 flow_setup_cb_t *cb, 674 void *cb_ident, void *cb_priv, bool ingress_only); 675 676 enum flow_cls_command { 677 FLOW_CLS_REPLACE, 678 FLOW_CLS_DESTROY, 679 FLOW_CLS_STATS, 680 FLOW_CLS_TMPLT_CREATE, 681 FLOW_CLS_TMPLT_DESTROY, 682 }; 683 684 struct flow_cls_common_offload { 685 u32 chain_index; 686 __be16 protocol; 687 u32 prio; 688 struct netlink_ext_ack *extack; 689 }; 690 691 struct flow_cls_offload { 692 struct flow_cls_common_offload common; 693 enum flow_cls_command command; 694 bool use_act_stats; 695 unsigned long cookie; 696 struct flow_rule *rule; 697 struct flow_stats stats; 698 u32 classid; 699 }; 700 701 enum offload_act_command { 702 FLOW_ACT_REPLACE, 703 FLOW_ACT_DESTROY, 704 FLOW_ACT_STATS, 705 }; 706 707 struct flow_offload_action { 708 struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/ 709 enum offload_act_command command; 710 enum flow_action_id id; 711 u32 index; 712 unsigned long cookie; 713 struct flow_stats stats; 714 struct flow_action action; 715 }; 716 717 struct flow_offload_action *offload_action_alloc(unsigned int num_actions); 718 719 static inline struct flow_rule * flow_cls_offload_flow_rule(struct flow_cls_offload * flow_cmd)720 flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd) 721 { 722 return flow_cmd->rule; 723 } 724 flow_block_init(struct flow_block * flow_block)725 static inline void flow_block_init(struct flow_block *flow_block) 726 { 727 INIT_LIST_HEAD(&flow_block->cb_list); 728 } 729 730 typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv, 731 enum tc_setup_type type, void *type_data, 732 void *data, 733 void (*cleanup)(struct flow_block_cb *block_cb)); 734 735 int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv); 736 void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv, 737 void (*release)(void *cb_priv)); 738 int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch, 739 enum tc_setup_type type, void *data, 740 struct flow_block_offload *bo, 741 void (*cleanup)(struct flow_block_cb *block_cb)); 742 bool flow_indr_dev_exists(void); 743 744 #endif /* _NET_FLOW_OFFLOAD_H */ 745