1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 7 */ 8 9 #ifndef _BR_PRIVATE_H 10 #define _BR_PRIVATE_H 11 12 #include <linux/netdevice.h> 13 #include <linux/if_bridge.h> 14 #include <linux/netpoll.h> 15 #include <linux/u64_stats_sync.h> 16 #include <net/route.h> 17 #include <net/ip6_fib.h> 18 #include <linux/if_vlan.h> 19 #include <linux/rhashtable.h> 20 #include <linux/refcount.h> 21 22 #define BR_HASH_BITS 8 23 #define BR_HASH_SIZE (1 << BR_HASH_BITS) 24 25 #define BR_HOLD_TIME (1*HZ) 26 27 #define BR_PORT_BITS 10 28 #define BR_MAX_PORTS (1<<BR_PORT_BITS) 29 30 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096 31 32 #define BR_HWDOM_MAX BITS_PER_LONG 33 34 #define BR_VERSION "2.3" 35 36 /* Control of forwarding link local multicast */ 37 #define BR_GROUPFWD_DEFAULT 0 38 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ 39 enum { 40 BR_GROUPFWD_STP = BIT(0), 41 BR_GROUPFWD_MACPAUSE = BIT(1), 42 BR_GROUPFWD_LACP = BIT(2), 43 }; 44 45 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ 46 BR_GROUPFWD_LACP) 47 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ 48 #define BR_GROUPFWD_8021AD 0xB801u 49 50 /* Path to usermode spanning tree program */ 51 #define BR_STP_PROG "/sbin/bridge-stp" 52 53 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT) 54 55 typedef struct bridge_id bridge_id; 56 typedef struct mac_addr mac_addr; 57 typedef __u16 port_id; 58 59 struct bridge_id { 60 unsigned char prio[2]; 61 unsigned char addr[ETH_ALEN]; 62 }; 63 64 struct mac_addr { 65 unsigned char addr[ETH_ALEN]; 66 }; 67 68 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 69 /* our own querier */ 70 struct bridge_mcast_own_query { 71 struct timer_list timer; 72 u32 startup_sent; 73 }; 74 75 /* other querier */ 76 struct bridge_mcast_other_query { 77 struct timer_list timer; 78 unsigned long delay_time; 79 }; 80 81 /* selected querier */ 82 struct bridge_mcast_querier { 83 struct br_ip addr; 84 struct net_bridge_port __rcu *port; 85 }; 86 87 /* IGMP/MLD statistics */ 88 struct bridge_mcast_stats { 89 struct br_mcast_stats mstats; 90 struct u64_stats_sync syncp; 91 }; 92 #endif 93 94 /* net_bridge_mcast_port must be always defined due to forwarding stubs */ 95 struct net_bridge_mcast_port { 96 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 97 struct net_bridge_port *port; 98 struct net_bridge_vlan *vlan; 99 100 struct bridge_mcast_own_query ip4_own_query; 101 struct timer_list ip4_mc_router_timer; 102 struct hlist_node ip4_rlist; 103 #if IS_ENABLED(CONFIG_IPV6) 104 struct bridge_mcast_own_query ip6_own_query; 105 struct timer_list ip6_mc_router_timer; 106 struct hlist_node ip6_rlist; 107 #endif /* IS_ENABLED(CONFIG_IPV6) */ 108 unsigned char multicast_router; 109 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 110 }; 111 112 /* net_bridge_mcast must be always defined due to forwarding stubs */ 113 struct net_bridge_mcast { 114 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 115 struct net_bridge *br; 116 struct net_bridge_vlan *vlan; 117 118 u32 multicast_last_member_count; 119 u32 multicast_startup_query_count; 120 121 u8 multicast_igmp_version; 122 u8 multicast_router; 123 #if IS_ENABLED(CONFIG_IPV6) 124 u8 multicast_mld_version; 125 #endif 126 unsigned long multicast_last_member_interval; 127 unsigned long multicast_membership_interval; 128 unsigned long multicast_querier_interval; 129 unsigned long multicast_query_interval; 130 unsigned long multicast_query_response_interval; 131 unsigned long multicast_startup_query_interval; 132 struct hlist_head ip4_mc_router_list; 133 struct timer_list ip4_mc_router_timer; 134 struct bridge_mcast_other_query ip4_other_query; 135 struct bridge_mcast_own_query ip4_own_query; 136 struct bridge_mcast_querier ip4_querier; 137 #if IS_ENABLED(CONFIG_IPV6) 138 struct hlist_head ip6_mc_router_list; 139 struct timer_list ip6_mc_router_timer; 140 struct bridge_mcast_other_query ip6_other_query; 141 struct bridge_mcast_own_query ip6_own_query; 142 struct bridge_mcast_querier ip6_querier; 143 #endif /* IS_ENABLED(CONFIG_IPV6) */ 144 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 145 }; 146 147 struct br_tunnel_info { 148 __be64 tunnel_id; 149 struct metadata_dst __rcu *tunnel_dst; 150 }; 151 152 /* private vlan flags */ 153 enum { 154 BR_VLFLAG_PER_PORT_STATS = BIT(0), 155 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), 156 BR_VLFLAG_MCAST_ENABLED = BIT(2), 157 BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3), 158 }; 159 160 /** 161 * struct net_bridge_vlan - per-vlan entry 162 * 163 * @vnode: rhashtable member 164 * @vid: VLAN id 165 * @flags: bridge vlan flags 166 * @priv_flags: private (in-kernel) bridge vlan flags 167 * @state: STP state (e.g. blocking, learning, forwarding) 168 * @stats: per-cpu VLAN statistics 169 * @br: if MASTER flag set, this points to a bridge struct 170 * @port: if MASTER flag unset, this points to a port struct 171 * @refcnt: if MASTER flag set, this is bumped for each port referencing it 172 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context 173 * for this VLAN entry 174 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context 175 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast 176 * context 177 * @vlist: sorted list of VLAN entries 178 * @rcu: used for entry destruction 179 * 180 * This structure is shared between the global per-VLAN entries contained in 181 * the bridge rhashtable and the local per-port per-VLAN entries contained in 182 * the port's rhashtable. The union entries should be interpreted depending on 183 * the entry flags that are set. 184 */ 185 struct net_bridge_vlan { 186 struct rhash_head vnode; 187 struct rhash_head tnode; 188 u16 vid; 189 u16 flags; 190 u16 priv_flags; 191 u8 state; 192 struct pcpu_sw_netstats __percpu *stats; 193 union { 194 struct net_bridge *br; 195 struct net_bridge_port *port; 196 }; 197 union { 198 refcount_t refcnt; 199 struct net_bridge_vlan *brvlan; 200 }; 201 202 struct br_tunnel_info tinfo; 203 204 union { 205 struct net_bridge_mcast br_mcast_ctx; 206 struct net_bridge_mcast_port port_mcast_ctx; 207 }; 208 209 struct list_head vlist; 210 211 struct rcu_head rcu; 212 }; 213 214 /** 215 * struct net_bridge_vlan_group 216 * 217 * @vlan_hash: VLAN entry rhashtable 218 * @vlan_list: sorted VLAN entry list 219 * @num_vlans: number of total VLAN entries 220 * @pvid: PVID VLAN id 221 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking) 222 * 223 * IMPORTANT: Be careful when checking if there're VLAN entries using list 224 * primitives because the bridge can have entries in its list which 225 * are just for global context but not for filtering, i.e. they have 226 * the master flag set but not the brentry flag. If you have to check 227 * if there're "real" entries in the bridge please test @num_vlans 228 */ 229 struct net_bridge_vlan_group { 230 struct rhashtable vlan_hash; 231 struct rhashtable tunnel_hash; 232 struct list_head vlan_list; 233 u16 num_vlans; 234 u16 pvid; 235 u8 pvid_state; 236 }; 237 238 /* bridge fdb flags */ 239 enum { 240 BR_FDB_LOCAL, 241 BR_FDB_STATIC, 242 BR_FDB_STICKY, 243 BR_FDB_ADDED_BY_USER, 244 BR_FDB_ADDED_BY_EXT_LEARN, 245 BR_FDB_OFFLOADED, 246 BR_FDB_NOTIFY, 247 BR_FDB_NOTIFY_INACTIVE 248 }; 249 250 struct net_bridge_fdb_key { 251 mac_addr addr; 252 u16 vlan_id; 253 }; 254 255 struct net_bridge_fdb_entry { 256 struct rhash_head rhnode; 257 struct net_bridge_port *dst; 258 259 struct net_bridge_fdb_key key; 260 struct hlist_node fdb_node; 261 unsigned long flags; 262 263 /* write-heavy members should not affect lookups */ 264 unsigned long updated ____cacheline_aligned_in_smp; 265 unsigned long used; 266 267 struct rcu_head rcu; 268 }; 269 270 #define MDB_PG_FLAGS_PERMANENT BIT(0) 271 #define MDB_PG_FLAGS_OFFLOAD BIT(1) 272 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2) 273 #define MDB_PG_FLAGS_STAR_EXCL BIT(3) 274 #define MDB_PG_FLAGS_BLOCKED BIT(4) 275 276 #define PG_SRC_ENT_LIMIT 32 277 278 #define BR_SGRP_F_DELETE BIT(0) 279 #define BR_SGRP_F_SEND BIT(1) 280 #define BR_SGRP_F_INSTALLED BIT(2) 281 282 struct net_bridge_mcast_gc { 283 struct hlist_node gc_node; 284 void (*destroy)(struct net_bridge_mcast_gc *gc); 285 }; 286 287 struct net_bridge_group_src { 288 struct hlist_node node; 289 290 struct br_ip addr; 291 struct net_bridge_port_group *pg; 292 u8 flags; 293 u8 src_query_rexmit_cnt; 294 struct timer_list timer; 295 296 struct net_bridge *br; 297 struct net_bridge_mcast_gc mcast_gc; 298 struct rcu_head rcu; 299 }; 300 301 struct net_bridge_port_group_sg_key { 302 struct net_bridge_port *port; 303 struct br_ip addr; 304 }; 305 306 struct net_bridge_port_group { 307 struct net_bridge_port_group __rcu *next; 308 struct net_bridge_port_group_sg_key key; 309 unsigned char eth_addr[ETH_ALEN] __aligned(2); 310 unsigned char flags; 311 unsigned char filter_mode; 312 unsigned char grp_query_rexmit_cnt; 313 unsigned char rt_protocol; 314 315 struct hlist_head src_list; 316 unsigned int src_ents; 317 struct timer_list timer; 318 struct timer_list rexmit_timer; 319 struct hlist_node mglist; 320 struct rb_root eht_set_tree; 321 struct rb_root eht_host_tree; 322 323 struct rhash_head rhnode; 324 struct net_bridge_mcast_gc mcast_gc; 325 struct rcu_head rcu; 326 }; 327 328 struct net_bridge_mdb_entry { 329 struct rhash_head rhnode; 330 struct net_bridge *br; 331 struct net_bridge_port_group __rcu *ports; 332 struct br_ip addr; 333 bool host_joined; 334 335 struct timer_list timer; 336 struct hlist_node mdb_node; 337 338 struct net_bridge_mcast_gc mcast_gc; 339 struct rcu_head rcu; 340 }; 341 342 struct net_bridge_port { 343 struct net_bridge *br; 344 struct net_device *dev; 345 struct list_head list; 346 347 unsigned long flags; 348 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 349 struct net_bridge_vlan_group __rcu *vlgrp; 350 #endif 351 struct net_bridge_port __rcu *backup_port; 352 353 /* STP */ 354 u8 priority; 355 u8 state; 356 u16 port_no; 357 unsigned char topology_change_ack; 358 unsigned char config_pending; 359 port_id port_id; 360 port_id designated_port; 361 bridge_id designated_root; 362 bridge_id designated_bridge; 363 u32 path_cost; 364 u32 designated_cost; 365 unsigned long designated_age; 366 367 struct timer_list forward_delay_timer; 368 struct timer_list hold_timer; 369 struct timer_list message_age_timer; 370 struct kobject kobj; 371 struct rcu_head rcu; 372 373 struct net_bridge_mcast_port multicast_ctx; 374 375 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 376 struct bridge_mcast_stats __percpu *mcast_stats; 377 378 u32 multicast_eht_hosts_limit; 379 u32 multicast_eht_hosts_cnt; 380 struct hlist_head mglist; 381 #endif 382 383 #ifdef CONFIG_SYSFS 384 char sysfs_name[IFNAMSIZ]; 385 #endif 386 387 #ifdef CONFIG_NET_POLL_CONTROLLER 388 struct netpoll *np; 389 #endif 390 #ifdef CONFIG_NET_SWITCHDEV 391 /* Identifier used to group ports that share the same switchdev 392 * hardware domain. 393 */ 394 int hwdom; 395 int offload_count; 396 struct netdev_phys_item_id ppid; 397 #endif 398 u16 group_fwd_mask; 399 u16 backup_redirected_cnt; 400 401 struct bridge_stp_xstats stp_xstats; 402 }; 403 404 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) 405 406 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) 407 #define br_promisc_port(p) ((p)->flags & BR_PROMISC) 408 409 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 410 { 411 return rcu_dereference(dev->rx_handler_data); 412 } 413 414 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) 415 { 416 return netif_is_bridge_port(dev) ? 417 rtnl_dereference(dev->rx_handler_data) : NULL; 418 } 419 420 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) 421 { 422 return netif_is_bridge_port(dev) ? 423 rcu_dereference_rtnl(dev->rx_handler_data) : NULL; 424 } 425 426 enum net_bridge_opts { 427 BROPT_VLAN_ENABLED, 428 BROPT_VLAN_STATS_ENABLED, 429 BROPT_NF_CALL_IPTABLES, 430 BROPT_NF_CALL_IP6TABLES, 431 BROPT_NF_CALL_ARPTABLES, 432 BROPT_GROUP_ADDR_SET, 433 BROPT_MULTICAST_ENABLED, 434 BROPT_MULTICAST_QUERIER, 435 BROPT_MULTICAST_QUERY_USE_IFADDR, 436 BROPT_MULTICAST_STATS_ENABLED, 437 BROPT_HAS_IPV6_ADDR, 438 BROPT_NEIGH_SUPPRESS_ENABLED, 439 BROPT_MTU_SET_BY_USER, 440 BROPT_VLAN_STATS_PER_PORT, 441 BROPT_NO_LL_LEARN, 442 BROPT_VLAN_BRIDGE_BINDING, 443 BROPT_MCAST_VLAN_SNOOPING_ENABLED, 444 }; 445 446 struct net_bridge { 447 spinlock_t lock; 448 spinlock_t hash_lock; 449 struct hlist_head frame_type_list; 450 struct net_device *dev; 451 unsigned long options; 452 /* These fields are accessed on each packet */ 453 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 454 __be16 vlan_proto; 455 u16 default_pvid; 456 struct net_bridge_vlan_group __rcu *vlgrp; 457 #endif 458 459 struct rhashtable fdb_hash_tbl; 460 struct list_head port_list; 461 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 462 union { 463 struct rtable fake_rtable; 464 struct rt6_info fake_rt6_info; 465 }; 466 #endif 467 u16 group_fwd_mask; 468 u16 group_fwd_mask_required; 469 470 /* STP */ 471 bridge_id designated_root; 472 bridge_id bridge_id; 473 unsigned char topology_change; 474 unsigned char topology_change_detected; 475 u16 root_port; 476 unsigned long max_age; 477 unsigned long hello_time; 478 unsigned long forward_delay; 479 unsigned long ageing_time; 480 unsigned long bridge_max_age; 481 unsigned long bridge_hello_time; 482 unsigned long bridge_forward_delay; 483 unsigned long bridge_ageing_time; 484 u32 root_path_cost; 485 486 u8 group_addr[ETH_ALEN]; 487 488 enum { 489 BR_NO_STP, /* no spanning tree */ 490 BR_KERNEL_STP, /* old STP in kernel */ 491 BR_USER_STP, /* new RSTP in userspace */ 492 } stp_enabled; 493 494 struct net_bridge_mcast multicast_ctx; 495 496 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 497 struct bridge_mcast_stats __percpu *mcast_stats; 498 499 u32 hash_max; 500 501 spinlock_t multicast_lock; 502 503 struct rhashtable mdb_hash_tbl; 504 struct rhashtable sg_port_tbl; 505 506 struct hlist_head mcast_gc_list; 507 struct hlist_head mdb_list; 508 509 struct work_struct mcast_gc_work; 510 #endif 511 512 struct timer_list hello_timer; 513 struct timer_list tcn_timer; 514 struct timer_list topology_change_timer; 515 struct delayed_work gc_work; 516 struct kobject *ifobj; 517 u32 auto_cnt; 518 519 #ifdef CONFIG_NET_SWITCHDEV 520 /* Counter used to make sure that hardware domains get unique 521 * identifiers in case a bridge spans multiple switchdev instances. 522 */ 523 int last_hwdom; 524 /* Bit mask of hardware domain numbers in use */ 525 unsigned long busy_hwdoms; 526 #endif 527 struct hlist_head fdb_list; 528 529 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 530 struct hlist_head mrp_list; 531 #endif 532 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 533 struct hlist_head mep_list; 534 #endif 535 }; 536 537 struct br_input_skb_cb { 538 struct net_device *brdev; 539 540 u16 frag_max_size; 541 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 542 u8 igmp; 543 u8 mrouters_only:1; 544 #endif 545 u8 proxyarp_replied:1; 546 u8 src_port_isolated:1; 547 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 548 u8 vlan_filtered:1; 549 #endif 550 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE 551 u8 br_netfilter_broute:1; 552 #endif 553 554 #ifdef CONFIG_NET_SWITCHDEV 555 /* Set if TX data plane offloading is used towards at least one 556 * hardware domain. 557 */ 558 u8 tx_fwd_offload:1; 559 /* The switchdev hardware domain from which this packet was received. 560 * If skb->offload_fwd_mark was set, then this packet was already 561 * forwarded by hardware to the other ports in the source hardware 562 * domain, otherwise it wasn't. 563 */ 564 int src_hwdom; 565 /* Bit mask of hardware domains towards this packet has already been 566 * transmitted using the TX data plane offload. 567 */ 568 unsigned long fwd_hwdoms; 569 #endif 570 }; 571 572 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 573 574 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 575 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 576 #else 577 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 578 #endif 579 580 #define br_printk(level, br, format, args...) \ 581 printk(level "%s: " format, (br)->dev->name, ##args) 582 583 #define br_err(__br, format, args...) \ 584 br_printk(KERN_ERR, __br, format, ##args) 585 #define br_warn(__br, format, args...) \ 586 br_printk(KERN_WARNING, __br, format, ##args) 587 #define br_notice(__br, format, args...) \ 588 br_printk(KERN_NOTICE, __br, format, ##args) 589 #define br_info(__br, format, args...) \ 590 br_printk(KERN_INFO, __br, format, ##args) 591 592 #define br_debug(br, format, args...) \ 593 pr_debug("%s: " format, (br)->dev->name, ##args) 594 595 /* called under bridge lock */ 596 static inline int br_is_root_bridge(const struct net_bridge *br) 597 { 598 return !memcmp(&br->bridge_id, &br->designated_root, 8); 599 } 600 601 /* check if a VLAN entry is global */ 602 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) 603 { 604 return v->flags & BRIDGE_VLAN_INFO_MASTER; 605 } 606 607 /* check if a VLAN entry is used by the bridge */ 608 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) 609 { 610 return v->flags & BRIDGE_VLAN_INFO_BRENTRY; 611 } 612 613 /* check if we should use the vlan entry, returns false if it's only context */ 614 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) 615 { 616 if (br_vlan_is_master(v)) { 617 if (br_vlan_is_brentry(v)) 618 return true; 619 else 620 return false; 621 } 622 623 return true; 624 } 625 626 static inline bool nbp_state_should_learn(const struct net_bridge_port *p) 627 { 628 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; 629 } 630 631 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) 632 { 633 bool ret = vid > 0 && vid < VLAN_VID_MASK; 634 635 if (!ret) 636 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); 637 638 return ret; 639 } 640 641 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, 642 const struct bridge_vlan_info *last, 643 struct netlink_ext_ack *extack) 644 { 645 /* pvid flag is not allowed in ranges */ 646 if (cur->flags & BRIDGE_VLAN_INFO_PVID) { 647 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); 648 return false; 649 } 650 651 /* when cur is the range end, check if: 652 * - it has range start flag 653 * - range ids are invalid (end is equal to or before start) 654 */ 655 if (last) { 656 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 657 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); 658 return false; 659 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { 660 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); 661 return false; 662 } else if (cur->vid <= last->vid) { 663 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 664 return false; 665 } 666 } 667 668 /* check for required range flags */ 669 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 670 BRIDGE_VLAN_INFO_RANGE_END))) { 671 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); 672 return false; 673 } 674 675 return true; 676 } 677 678 static inline int br_afspec_cmd_to_rtm(int cmd) 679 { 680 switch (cmd) { 681 case RTM_SETLINK: 682 return RTM_NEWVLAN; 683 case RTM_DELLINK: 684 return RTM_DELVLAN; 685 } 686 687 return 0; 688 } 689 690 static inline int br_opt_get(const struct net_bridge *br, 691 enum net_bridge_opts opt) 692 { 693 return test_bit(opt, &br->options); 694 } 695 696 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, 697 struct netlink_ext_ack *extack); 698 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); 699 int br_boolopt_multi_toggle(struct net_bridge *br, 700 struct br_boolopt_multi *bm, 701 struct netlink_ext_ack *extack); 702 void br_boolopt_multi_get(const struct net_bridge *br, 703 struct br_boolopt_multi *bm); 704 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); 705 706 /* br_device.c */ 707 void br_dev_setup(struct net_device *dev); 708 void br_dev_delete(struct net_device *dev, struct list_head *list); 709 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 710 #ifdef CONFIG_NET_POLL_CONTROLLER 711 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 712 struct sk_buff *skb) 713 { 714 netpoll_send_skb(p->np, skb); 715 } 716 717 int br_netpoll_enable(struct net_bridge_port *p); 718 void br_netpoll_disable(struct net_bridge_port *p); 719 #else 720 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 721 struct sk_buff *skb) 722 { 723 } 724 725 static inline int br_netpoll_enable(struct net_bridge_port *p) 726 { 727 return 0; 728 } 729 730 static inline void br_netpoll_disable(struct net_bridge_port *p) 731 { 732 } 733 #endif 734 735 /* br_fdb.c */ 736 int br_fdb_init(void); 737 void br_fdb_fini(void); 738 int br_fdb_hash_init(struct net_bridge *br); 739 void br_fdb_hash_fini(struct net_bridge *br); 740 void br_fdb_flush(struct net_bridge *br); 741 void br_fdb_find_delete_local(struct net_bridge *br, 742 const struct net_bridge_port *p, 743 const unsigned char *addr, u16 vid); 744 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); 745 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 746 void br_fdb_cleanup(struct work_struct *work); 747 void br_fdb_delete_by_port(struct net_bridge *br, 748 const struct net_bridge_port *p, u16 vid, int do_all); 749 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, 750 const unsigned char *addr, 751 __u16 vid); 752 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 753 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, 754 unsigned long off); 755 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, 756 const unsigned char *addr, u16 vid); 757 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, 758 const unsigned char *addr, u16 vid, unsigned long flags); 759 760 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], 761 struct net_device *dev, const unsigned char *addr, u16 vid); 762 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, 763 const unsigned char *addr, u16 vid, u16 nlh_flags, 764 struct netlink_ext_ack *extack); 765 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 766 struct net_device *dev, struct net_device *fdev, int *idx); 767 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, 768 const unsigned char *addr, u16 vid, u32 portid, u32 seq, 769 struct netlink_ext_ack *extack); 770 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); 771 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); 772 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, 773 const unsigned char *addr, u16 vid, 774 bool swdev_notify); 775 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, 776 const unsigned char *addr, u16 vid, 777 bool swdev_notify); 778 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, 779 const unsigned char *addr, u16 vid, bool offloaded); 780 int br_fdb_replay(const struct net_device *br_dev, const struct net_device *dev, 781 const void *ctx, bool adding, struct notifier_block *nb); 782 783 /* br_forward.c */ 784 enum br_pkt_type { 785 BR_PKT_UNICAST, 786 BR_PKT_MULTICAST, 787 BR_PKT_BROADCAST 788 }; 789 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); 790 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, 791 bool local_rcv, bool local_orig); 792 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 793 void br_flood(struct net_bridge *br, struct sk_buff *skb, 794 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); 795 796 /* return true if both source port and dest port are isolated */ 797 static inline bool br_skb_isolated(const struct net_bridge_port *to, 798 const struct sk_buff *skb) 799 { 800 return BR_INPUT_SKB_CB(skb)->src_port_isolated && 801 (to->flags & BR_ISOLATED); 802 } 803 804 /* br_if.c */ 805 void br_port_carrier_check(struct net_bridge_port *p, bool *notified); 806 int br_add_bridge(struct net *net, const char *name); 807 int br_del_bridge(struct net *net, const char *name); 808 int br_add_if(struct net_bridge *br, struct net_device *dev, 809 struct netlink_ext_ack *extack); 810 int br_del_if(struct net_bridge *br, struct net_device *dev); 811 void br_mtu_auto_adjust(struct net_bridge *br); 812 netdev_features_t br_features_recompute(struct net_bridge *br, 813 netdev_features_t features); 814 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); 815 void br_manage_promisc(struct net_bridge *br); 816 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); 817 818 /* br_input.c */ 819 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 820 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); 821 822 struct br_frame_type { 823 __be16 type; 824 int (*frame_handler)(struct net_bridge_port *port, 825 struct sk_buff *skb); 826 struct hlist_node list; 827 }; 828 829 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); 830 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); 831 832 static inline bool br_rx_handler_check_rcu(const struct net_device *dev) 833 { 834 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); 835 } 836 837 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) 838 { 839 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev); 840 } 841 842 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) 843 { 844 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; 845 } 846 847 static inline struct net_bridge_port * 848 br_port_get_check_rtnl(const struct net_device *dev) 849 { 850 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; 851 } 852 853 /* br_ioctl.c */ 854 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 855 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, 856 void __user *arg); 857 858 /* br_multicast.c */ 859 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 860 int br_multicast_rcv(struct net_bridge_mcast **brmctx, 861 struct net_bridge_mcast_port **pmctx, 862 struct net_bridge_vlan *vlan, 863 struct sk_buff *skb, u16 vid); 864 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 865 struct sk_buff *skb, u16 vid); 866 int br_multicast_add_port(struct net_bridge_port *port); 867 void br_multicast_del_port(struct net_bridge_port *port); 868 void br_multicast_enable_port(struct net_bridge_port *port); 869 void br_multicast_disable_port(struct net_bridge_port *port); 870 void br_multicast_init(struct net_bridge *br); 871 void br_multicast_join_snoopers(struct net_bridge *br); 872 void br_multicast_leave_snoopers(struct net_bridge *br); 873 void br_multicast_open(struct net_bridge *br); 874 void br_multicast_stop(struct net_bridge *br); 875 void br_multicast_dev_del(struct net_bridge *br); 876 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb, 877 struct net_bridge_mcast *brmctx, 878 bool local_rcv, bool local_orig); 879 int br_multicast_set_router(struct net_bridge *br, unsigned long val); 880 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); 881 int br_multicast_toggle(struct net_bridge *br, unsigned long val, 882 struct netlink_ext_ack *extack); 883 int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 884 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 885 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val); 886 #if IS_ENABLED(CONFIG_IPV6) 887 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val); 888 #endif 889 struct net_bridge_mdb_entry * 890 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); 891 struct net_bridge_mdb_entry * 892 br_multicast_new_group(struct net_bridge *br, struct br_ip *group); 893 struct net_bridge_port_group * 894 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, 895 struct net_bridge_port_group __rcu *next, 896 unsigned char flags, const unsigned char *src, 897 u8 filter_mode, u8 rt_protocol); 898 int br_mdb_hash_init(struct net_bridge *br); 899 void br_mdb_hash_fini(struct net_bridge *br); 900 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, 901 struct net_bridge_port_group *pg, int type); 902 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx, 903 int type); 904 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, 905 struct net_bridge_port_group *pg, 906 struct net_bridge_port_group __rcu **pp); 907 void br_multicast_count(struct net_bridge *br, 908 const struct net_bridge_port *p, 909 const struct sk_buff *skb, u8 type, u8 dir); 910 int br_multicast_init_stats(struct net_bridge *br); 911 void br_multicast_uninit_stats(struct net_bridge *br); 912 void br_multicast_get_stats(const struct net_bridge *br, 913 const struct net_bridge_port *p, 914 struct br_mcast_stats *dest); 915 void br_mdb_init(void); 916 void br_mdb_uninit(void); 917 void br_multicast_host_join(const struct net_bridge_mcast *brmctx, 918 struct net_bridge_mdb_entry *mp, bool notify); 919 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); 920 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, 921 u8 filter_mode); 922 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, 923 struct net_bridge_port_group *sg); 924 struct net_bridge_group_src * 925 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip); 926 void br_multicast_del_group_src(struct net_bridge_group_src *src, 927 bool fastleave); 928 void br_multicast_ctx_init(struct net_bridge *br, 929 struct net_bridge_vlan *vlan, 930 struct net_bridge_mcast *brmctx); 931 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx); 932 void br_multicast_port_ctx_init(struct net_bridge_port *port, 933 struct net_bridge_vlan *vlan, 934 struct net_bridge_mcast_port *pmctx); 935 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx); 936 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on); 937 void br_multicast_toggle_vlan(struct net_bridge_vlan *vlan, bool on); 938 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on, 939 struct netlink_ext_ack *extack); 940 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on); 941 942 int br_mdb_replay(struct net_device *br_dev, struct net_device *dev, 943 const void *ctx, bool adding, struct notifier_block *nb, 944 struct netlink_ext_ack *extack); 945 946 static inline bool br_group_is_l2(const struct br_ip *group) 947 { 948 return group->proto == 0; 949 } 950 951 #define mlock_dereference(X, br) \ 952 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 953 954 static inline struct hlist_node * 955 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx, 956 struct sk_buff *skb) 957 { 958 #if IS_ENABLED(CONFIG_IPV6) 959 if (skb->protocol == htons(ETH_P_IPV6)) 960 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list)); 961 #endif 962 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list)); 963 } 964 965 static inline struct net_bridge_port * 966 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) 967 { 968 struct net_bridge_mcast_port *mctx; 969 970 #if IS_ENABLED(CONFIG_IPV6) 971 if (skb->protocol == htons(ETH_P_IPV6)) 972 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 973 ip6_rlist); 974 else 975 #endif 976 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 977 ip4_rlist); 978 979 if (mctx) 980 return mctx->port; 981 else 982 return NULL; 983 } 984 985 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx) 986 { 987 return timer_pending(&brmctx->ip4_mc_router_timer); 988 } 989 990 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx) 991 { 992 #if IS_ENABLED(CONFIG_IPV6) 993 return timer_pending(&brmctx->ip6_mc_router_timer); 994 #else 995 return false; 996 #endif 997 } 998 999 static inline bool 1000 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb) 1001 { 1002 switch (brmctx->multicast_router) { 1003 case MDB_RTR_TYPE_PERM: 1004 return true; 1005 case MDB_RTR_TYPE_TEMP_QUERY: 1006 if (skb) { 1007 if (skb->protocol == htons(ETH_P_IP)) 1008 return br_ip4_multicast_is_router(brmctx); 1009 else if (skb->protocol == htons(ETH_P_IPV6)) 1010 return br_ip6_multicast_is_router(brmctx); 1011 } else { 1012 return br_ip4_multicast_is_router(brmctx) || 1013 br_ip6_multicast_is_router(brmctx); 1014 } 1015 fallthrough; 1016 default: 1017 return false; 1018 } 1019 } 1020 1021 static inline bool 1022 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1023 struct bridge_mcast_other_query *querier, 1024 const bool is_ipv6) 1025 { 1026 bool own_querier_enabled; 1027 1028 if (br_opt_get(brmctx->br, BROPT_MULTICAST_QUERIER)) { 1029 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR)) 1030 own_querier_enabled = false; 1031 else 1032 own_querier_enabled = true; 1033 } else { 1034 own_querier_enabled = false; 1035 } 1036 1037 return time_is_before_jiffies(querier->delay_time) && 1038 (own_querier_enabled || timer_pending(&querier->timer)); 1039 } 1040 1041 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1042 struct ethhdr *eth, 1043 const struct net_bridge_mdb_entry *mdb) 1044 { 1045 switch (eth->h_proto) { 1046 case (htons(ETH_P_IP)): 1047 return __br_multicast_querier_exists(brmctx, 1048 &brmctx->ip4_other_query, false); 1049 #if IS_ENABLED(CONFIG_IPV6) 1050 case (htons(ETH_P_IPV6)): 1051 return __br_multicast_querier_exists(brmctx, 1052 &brmctx->ip6_other_query, true); 1053 #endif 1054 default: 1055 return !!mdb && br_group_is_l2(&mdb->addr); 1056 } 1057 } 1058 1059 static inline bool br_multicast_is_star_g(const struct br_ip *ip) 1060 { 1061 switch (ip->proto) { 1062 case htons(ETH_P_IP): 1063 return ipv4_is_zeronet(ip->src.ip4); 1064 #if IS_ENABLED(CONFIG_IPV6) 1065 case htons(ETH_P_IPV6): 1066 return ipv6_addr_any(&ip->src.ip6); 1067 #endif 1068 default: 1069 return false; 1070 } 1071 } 1072 1073 static inline bool 1074 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx, 1075 __be16 proto) 1076 { 1077 switch (proto) { 1078 case htons(ETH_P_IP): 1079 return !!(brmctx->multicast_igmp_version == 3); 1080 #if IS_ENABLED(CONFIG_IPV6) 1081 case htons(ETH_P_IPV6): 1082 return !!(brmctx->multicast_mld_version == 2); 1083 #endif 1084 default: 1085 return false; 1086 } 1087 } 1088 1089 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1090 { 1091 return BR_INPUT_SKB_CB(skb)->igmp; 1092 } 1093 1094 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx) 1095 { 1096 return brmctx->multicast_last_member_interval * 1097 brmctx->multicast_last_member_count; 1098 } 1099 1100 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx) 1101 { 1102 /* use the RFC default of 2 for QRV */ 1103 return 2 * brmctx->multicast_query_interval + 1104 brmctx->multicast_query_response_interval; 1105 } 1106 1107 static inline bool 1108 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx) 1109 { 1110 return !!brmctx->vlan; 1111 } 1112 1113 static inline bool 1114 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx) 1115 { 1116 return !!pmctx->vlan; 1117 } 1118 1119 static inline struct net_bridge_mcast * 1120 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx) 1121 { 1122 if (!br_multicast_port_ctx_is_vlan(pmctx)) 1123 return &pmctx->port->br->multicast_ctx; 1124 else 1125 return &pmctx->vlan->brvlan->br_mcast_ctx; 1126 } 1127 1128 static inline bool 1129 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx) 1130 { 1131 return br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 1132 br_multicast_ctx_is_vlan(brmctx) && 1133 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED); 1134 } 1135 1136 static inline bool 1137 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx) 1138 { 1139 return br_multicast_ctx_is_vlan(brmctx) && 1140 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1141 } 1142 1143 static inline bool 1144 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx) 1145 { 1146 return br_multicast_port_ctx_is_vlan(pmctx) && 1147 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1148 } 1149 1150 static inline bool 1151 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx) 1152 { 1153 return pmctx->port->state == BR_STATE_DISABLED || 1154 (br_multicast_port_ctx_is_vlan(pmctx) && 1155 (br_multicast_port_ctx_vlan_disabled(pmctx) || 1156 pmctx->vlan->state == BR_STATE_DISABLED)); 1157 } 1158 1159 static inline bool 1160 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx) 1161 { 1162 return br_multicast_port_ctx_state_disabled(pmctx) || 1163 pmctx->port->state == BR_STATE_BLOCKING || 1164 (br_multicast_port_ctx_is_vlan(pmctx) && 1165 pmctx->vlan->state == BR_STATE_BLOCKING); 1166 } 1167 #else 1168 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx, 1169 struct net_bridge_mcast_port **pmctx, 1170 struct net_bridge_vlan *vlan, 1171 struct sk_buff *skb, 1172 u16 vid) 1173 { 1174 return 0; 1175 } 1176 1177 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 1178 struct sk_buff *skb, u16 vid) 1179 { 1180 return NULL; 1181 } 1182 1183 static inline int br_multicast_add_port(struct net_bridge_port *port) 1184 { 1185 return 0; 1186 } 1187 1188 static inline void br_multicast_del_port(struct net_bridge_port *port) 1189 { 1190 } 1191 1192 static inline void br_multicast_enable_port(struct net_bridge_port *port) 1193 { 1194 } 1195 1196 static inline void br_multicast_disable_port(struct net_bridge_port *port) 1197 { 1198 } 1199 1200 static inline void br_multicast_init(struct net_bridge *br) 1201 { 1202 } 1203 1204 static inline void br_multicast_join_snoopers(struct net_bridge *br) 1205 { 1206 } 1207 1208 static inline void br_multicast_leave_snoopers(struct net_bridge *br) 1209 { 1210 } 1211 1212 static inline void br_multicast_open(struct net_bridge *br) 1213 { 1214 } 1215 1216 static inline void br_multicast_stop(struct net_bridge *br) 1217 { 1218 } 1219 1220 static inline void br_multicast_dev_del(struct net_bridge *br) 1221 { 1222 } 1223 1224 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 1225 struct sk_buff *skb, 1226 struct net_bridge_mcast *brmctx, 1227 bool local_rcv, bool local_orig) 1228 { 1229 } 1230 1231 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx, 1232 struct sk_buff *skb) 1233 { 1234 return false; 1235 } 1236 1237 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1238 struct ethhdr *eth, 1239 const struct net_bridge_mdb_entry *mdb) 1240 { 1241 return false; 1242 } 1243 1244 static inline void br_mdb_init(void) 1245 { 1246 } 1247 1248 static inline void br_mdb_uninit(void) 1249 { 1250 } 1251 1252 static inline int br_mdb_hash_init(struct net_bridge *br) 1253 { 1254 return 0; 1255 } 1256 1257 static inline void br_mdb_hash_fini(struct net_bridge *br) 1258 { 1259 } 1260 1261 static inline void br_multicast_count(struct net_bridge *br, 1262 const struct net_bridge_port *p, 1263 const struct sk_buff *skb, 1264 u8 type, u8 dir) 1265 { 1266 } 1267 1268 static inline int br_multicast_init_stats(struct net_bridge *br) 1269 { 1270 return 0; 1271 } 1272 1273 static inline void br_multicast_uninit_stats(struct net_bridge *br) 1274 { 1275 } 1276 1277 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1278 { 1279 return 0; 1280 } 1281 1282 static inline void br_multicast_ctx_init(struct net_bridge *br, 1283 struct net_bridge_vlan *vlan, 1284 struct net_bridge_mcast *brmctx) 1285 { 1286 } 1287 1288 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx) 1289 { 1290 } 1291 1292 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port, 1293 struct net_bridge_vlan *vlan, 1294 struct net_bridge_mcast_port *pmctx) 1295 { 1296 } 1297 1298 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx) 1299 { 1300 } 1301 1302 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, 1303 bool on) 1304 { 1305 } 1306 1307 static inline void br_multicast_toggle_vlan(struct net_bridge_vlan *vlan, 1308 bool on) 1309 { 1310 } 1311 1312 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br, 1313 bool on, 1314 struct netlink_ext_ack *extack) 1315 { 1316 return -EOPNOTSUPP; 1317 } 1318 1319 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, 1320 bool on) 1321 { 1322 return false; 1323 } 1324 1325 static inline int br_mdb_replay(struct net_device *br_dev, 1326 struct net_device *dev, const void *ctx, 1327 bool adding, struct notifier_block *nb, 1328 struct netlink_ext_ack *extack) 1329 { 1330 return -EOPNOTSUPP; 1331 } 1332 #endif 1333 1334 /* br_vlan.c */ 1335 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1336 bool br_allowed_ingress(const struct net_bridge *br, 1337 struct net_bridge_vlan_group *vg, struct sk_buff *skb, 1338 u16 *vid, u8 *state, 1339 struct net_bridge_vlan **vlan); 1340 bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1341 const struct sk_buff *skb); 1342 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); 1343 struct sk_buff *br_handle_vlan(struct net_bridge *br, 1344 const struct net_bridge_port *port, 1345 struct net_bridge_vlan_group *vg, 1346 struct sk_buff *skb); 1347 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1348 bool *changed, struct netlink_ext_ack *extack); 1349 int br_vlan_delete(struct net_bridge *br, u16 vid); 1350 void br_vlan_flush(struct net_bridge *br); 1351 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); 1352 void br_recalculate_fwd_mask(struct net_bridge *br); 1353 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 1354 struct netlink_ext_ack *extack); 1355 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 1356 struct netlink_ext_ack *extack); 1357 int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 1358 struct netlink_ext_ack *extack); 1359 int br_vlan_set_stats(struct net_bridge *br, unsigned long val); 1360 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); 1361 int br_vlan_init(struct net_bridge *br); 1362 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 1363 struct netlink_ext_ack *extack); 1364 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1365 struct netlink_ext_ack *extack); 1366 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1367 bool *changed, struct netlink_ext_ack *extack); 1368 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); 1369 void nbp_vlan_flush(struct net_bridge_port *port); 1370 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); 1371 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); 1372 void br_vlan_get_stats(const struct net_bridge_vlan *v, 1373 struct pcpu_sw_netstats *stats); 1374 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); 1375 int br_vlan_bridge_event(struct net_device *dev, unsigned long event, 1376 void *ptr); 1377 void br_vlan_rtnl_init(void); 1378 void br_vlan_rtnl_uninit(void); 1379 void br_vlan_notify(const struct net_bridge *br, 1380 const struct net_bridge_port *p, 1381 u16 vid, u16 vid_range, 1382 int cmd); 1383 int br_vlan_replay(struct net_device *br_dev, struct net_device *dev, 1384 const void *ctx, bool adding, struct notifier_block *nb, 1385 struct netlink_ext_ack *extack); 1386 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1387 const struct net_bridge_vlan *range_end); 1388 1389 void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1390 struct net_device_path_ctx *ctx, 1391 struct net_device_path *path); 1392 int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1393 struct net_bridge_port *dst, 1394 struct net_device_path *path); 1395 1396 static inline struct net_bridge_vlan_group *br_vlan_group( 1397 const struct net_bridge *br) 1398 { 1399 return rtnl_dereference(br->vlgrp); 1400 } 1401 1402 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1403 const struct net_bridge_port *p) 1404 { 1405 return rtnl_dereference(p->vlgrp); 1406 } 1407 1408 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1409 const struct net_bridge *br) 1410 { 1411 return rcu_dereference(br->vlgrp); 1412 } 1413 1414 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1415 const struct net_bridge_port *p) 1416 { 1417 return rcu_dereference(p->vlgrp); 1418 } 1419 1420 /* Since bridge now depends on 8021Q module, but the time bridge sees the 1421 * skb, the vlan tag will always be present if the frame was tagged. 1422 */ 1423 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) 1424 { 1425 int err = 0; 1426 1427 if (skb_vlan_tag_present(skb)) { 1428 *vid = skb_vlan_tag_get_id(skb); 1429 } else { 1430 *vid = 0; 1431 err = -EINVAL; 1432 } 1433 1434 return err; 1435 } 1436 1437 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1438 { 1439 if (!vg) 1440 return 0; 1441 1442 smp_rmb(); 1443 return vg->pvid; 1444 } 1445 1446 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) 1447 { 1448 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags; 1449 } 1450 #else 1451 static inline bool br_allowed_ingress(const struct net_bridge *br, 1452 struct net_bridge_vlan_group *vg, 1453 struct sk_buff *skb, 1454 u16 *vid, u8 *state, 1455 struct net_bridge_vlan **vlan) 1456 1457 { 1458 *vlan = NULL; 1459 return true; 1460 } 1461 1462 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1463 const struct sk_buff *skb) 1464 { 1465 return true; 1466 } 1467 1468 static inline bool br_should_learn(struct net_bridge_port *p, 1469 struct sk_buff *skb, u16 *vid) 1470 { 1471 return true; 1472 } 1473 1474 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, 1475 const struct net_bridge_port *port, 1476 struct net_bridge_vlan_group *vg, 1477 struct sk_buff *skb) 1478 { 1479 return skb; 1480 } 1481 1482 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1483 bool *changed, struct netlink_ext_ack *extack) 1484 { 1485 *changed = false; 1486 return -EOPNOTSUPP; 1487 } 1488 1489 static inline int br_vlan_delete(struct net_bridge *br, u16 vid) 1490 { 1491 return -EOPNOTSUPP; 1492 } 1493 1494 static inline void br_vlan_flush(struct net_bridge *br) 1495 { 1496 } 1497 1498 static inline void br_recalculate_fwd_mask(struct net_bridge *br) 1499 { 1500 } 1501 1502 static inline int br_vlan_init(struct net_bridge *br) 1503 { 1504 return 0; 1505 } 1506 1507 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1508 bool *changed, struct netlink_ext_ack *extack) 1509 { 1510 *changed = false; 1511 return -EOPNOTSUPP; 1512 } 1513 1514 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1515 { 1516 return -EOPNOTSUPP; 1517 } 1518 1519 static inline void nbp_vlan_flush(struct net_bridge_port *port) 1520 { 1521 } 1522 1523 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, 1524 u16 vid) 1525 { 1526 return NULL; 1527 } 1528 1529 static inline int nbp_vlan_init(struct net_bridge_port *port, 1530 struct netlink_ext_ack *extack) 1531 { 1532 return 0; 1533 } 1534 1535 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) 1536 { 1537 return 0; 1538 } 1539 1540 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1541 { 1542 return 0; 1543 } 1544 1545 static inline int br_vlan_filter_toggle(struct net_bridge *br, 1546 unsigned long val, 1547 struct netlink_ext_ack *extack) 1548 { 1549 return -EOPNOTSUPP; 1550 } 1551 1552 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, 1553 u32 filter_mask) 1554 { 1555 return 0; 1556 } 1557 1558 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1559 struct net_device_path_ctx *ctx, 1560 struct net_device_path *path) 1561 { 1562 } 1563 1564 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1565 struct net_bridge_port *dst, 1566 struct net_device_path *path) 1567 { 1568 return 0; 1569 } 1570 1571 static inline struct net_bridge_vlan_group *br_vlan_group( 1572 const struct net_bridge *br) 1573 { 1574 return NULL; 1575 } 1576 1577 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1578 const struct net_bridge_port *p) 1579 { 1580 return NULL; 1581 } 1582 1583 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1584 const struct net_bridge *br) 1585 { 1586 return NULL; 1587 } 1588 1589 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1590 const struct net_bridge_port *p) 1591 { 1592 return NULL; 1593 } 1594 1595 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, 1596 struct pcpu_sw_netstats *stats) 1597 { 1598 } 1599 1600 static inline void br_vlan_port_event(struct net_bridge_port *p, 1601 unsigned long event) 1602 { 1603 } 1604 1605 static inline int br_vlan_bridge_event(struct net_device *dev, 1606 unsigned long event, void *ptr) 1607 { 1608 return 0; 1609 } 1610 1611 static inline void br_vlan_rtnl_init(void) 1612 { 1613 } 1614 1615 static inline void br_vlan_rtnl_uninit(void) 1616 { 1617 } 1618 1619 static inline void br_vlan_notify(const struct net_bridge *br, 1620 const struct net_bridge_port *p, 1621 u16 vid, u16 vid_range, 1622 int cmd) 1623 { 1624 } 1625 1626 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1627 const struct net_bridge_vlan *range_end) 1628 { 1629 return true; 1630 } 1631 1632 static inline int br_vlan_replay(struct net_device *br_dev, 1633 struct net_device *dev, const void *ctx, 1634 bool adding, struct notifier_block *nb, 1635 struct netlink_ext_ack *extack) 1636 { 1637 return -EOPNOTSUPP; 1638 } 1639 #endif 1640 1641 /* br_vlan_options.c */ 1642 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1643 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, 1644 const struct net_bridge_vlan *range_end); 1645 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v); 1646 size_t br_vlan_opts_nl_size(void); 1647 int br_vlan_process_options(const struct net_bridge *br, 1648 const struct net_bridge_port *p, 1649 struct net_bridge_vlan *range_start, 1650 struct net_bridge_vlan *range_end, 1651 struct nlattr **tb, 1652 struct netlink_ext_ack *extack); 1653 int br_vlan_rtm_process_global_options(struct net_device *dev, 1654 const struct nlattr *attr, 1655 int cmd, 1656 struct netlink_ext_ack *extack); 1657 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, 1658 const struct net_bridge_vlan *r_end); 1659 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, 1660 const struct net_bridge_vlan *v_opts); 1661 1662 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */ 1663 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v) 1664 { 1665 return READ_ONCE(v->state); 1666 } 1667 1668 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state) 1669 { 1670 WRITE_ONCE(v->state, state); 1671 } 1672 1673 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg) 1674 { 1675 return READ_ONCE(vg->pvid_state); 1676 } 1677 1678 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg, 1679 u8 state) 1680 { 1681 WRITE_ONCE(vg->pvid_state, state); 1682 } 1683 1684 /* learn_allow is true at ingress and false at egress */ 1685 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow) 1686 { 1687 switch (state) { 1688 case BR_STATE_LEARNING: 1689 return learn_allow; 1690 case BR_STATE_FORWARDING: 1691 return true; 1692 default: 1693 return false; 1694 } 1695 } 1696 #endif 1697 1698 struct nf_br_ops { 1699 int (*br_dev_xmit_hook)(struct sk_buff *skb); 1700 }; 1701 extern const struct nf_br_ops __rcu *nf_br_ops; 1702 1703 /* br_netfilter.c */ 1704 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1705 int br_nf_core_init(void); 1706 void br_nf_core_fini(void); 1707 void br_netfilter_rtable_init(struct net_bridge *); 1708 #else 1709 static inline int br_nf_core_init(void) { return 0; } 1710 static inline void br_nf_core_fini(void) {} 1711 #define br_netfilter_rtable_init(x) 1712 #endif 1713 1714 /* br_stp.c */ 1715 void br_set_state(struct net_bridge_port *p, unsigned int state); 1716 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); 1717 void br_init_port(struct net_bridge_port *p); 1718 void br_become_designated_port(struct net_bridge_port *p); 1719 1720 void __br_set_forward_delay(struct net_bridge *br, unsigned long t); 1721 int br_set_forward_delay(struct net_bridge *br, unsigned long x); 1722 int br_set_hello_time(struct net_bridge *br, unsigned long x); 1723 int br_set_max_age(struct net_bridge *br, unsigned long x); 1724 int __set_ageing_time(struct net_device *dev, unsigned long t); 1725 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); 1726 1727 1728 /* br_stp_if.c */ 1729 void br_stp_enable_bridge(struct net_bridge *br); 1730 void br_stp_disable_bridge(struct net_bridge *br); 1731 int br_stp_set_enabled(struct net_bridge *br, unsigned long val, 1732 struct netlink_ext_ack *extack); 1733 void br_stp_enable_port(struct net_bridge_port *p); 1734 void br_stp_disable_port(struct net_bridge_port *p); 1735 bool br_stp_recalculate_bridge_id(struct net_bridge *br); 1736 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 1737 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); 1738 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); 1739 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); 1740 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 1741 1742 /* br_stp_bpdu.c */ 1743 struct stp_proto; 1744 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 1745 struct net_device *dev); 1746 1747 /* br_stp_timer.c */ 1748 void br_stp_timer_init(struct net_bridge *br); 1749 void br_stp_port_timer_init(struct net_bridge_port *p); 1750 unsigned long br_timer_value(const struct timer_list *timer); 1751 1752 /* br.c */ 1753 #if IS_ENABLED(CONFIG_ATM_LANE) 1754 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 1755 #endif 1756 1757 /* br_mrp.c */ 1758 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 1759 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1760 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1761 bool br_mrp_enabled(struct net_bridge *br); 1762 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); 1763 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); 1764 #else 1765 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1766 struct nlattr *attr, int cmd, 1767 struct netlink_ext_ack *extack) 1768 { 1769 return -EOPNOTSUPP; 1770 } 1771 1772 static inline bool br_mrp_enabled(struct net_bridge *br) 1773 { 1774 return false; 1775 } 1776 1777 static inline void br_mrp_port_del(struct net_bridge *br, 1778 struct net_bridge_port *p) 1779 { 1780 } 1781 1782 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) 1783 { 1784 return 0; 1785 } 1786 1787 #endif 1788 1789 /* br_cfm.c */ 1790 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 1791 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1792 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1793 bool br_cfm_created(struct net_bridge *br); 1794 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); 1795 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); 1796 int br_cfm_status_fill_info(struct sk_buff *skb, 1797 struct net_bridge *br, 1798 bool getlink); 1799 int br_cfm_mep_count(struct net_bridge *br, u32 *count); 1800 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); 1801 #else 1802 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1803 struct nlattr *attr, int cmd, 1804 struct netlink_ext_ack *extack) 1805 { 1806 return -EOPNOTSUPP; 1807 } 1808 1809 static inline bool br_cfm_created(struct net_bridge *br) 1810 { 1811 return false; 1812 } 1813 1814 static inline void br_cfm_port_del(struct net_bridge *br, 1815 struct net_bridge_port *p) 1816 { 1817 } 1818 1819 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) 1820 { 1821 return -EOPNOTSUPP; 1822 } 1823 1824 static inline int br_cfm_status_fill_info(struct sk_buff *skb, 1825 struct net_bridge *br, 1826 bool getlink) 1827 { 1828 return -EOPNOTSUPP; 1829 } 1830 1831 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) 1832 { 1833 return -EOPNOTSUPP; 1834 } 1835 1836 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) 1837 { 1838 return -EOPNOTSUPP; 1839 } 1840 #endif 1841 1842 /* br_netlink.c */ 1843 extern struct rtnl_link_ops br_link_ops; 1844 int br_netlink_init(void); 1845 void br_netlink_fini(void); 1846 void br_ifinfo_notify(int event, const struct net_bridge *br, 1847 const struct net_bridge_port *port); 1848 void br_info_notify(int event, const struct net_bridge *br, 1849 const struct net_bridge_port *port, u32 filter); 1850 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, 1851 struct netlink_ext_ack *extack); 1852 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); 1853 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, 1854 u32 filter_mask, int nlflags); 1855 int br_process_vlan_info(struct net_bridge *br, 1856 struct net_bridge_port *p, int cmd, 1857 struct bridge_vlan_info *vinfo_curr, 1858 struct bridge_vlan_info **vinfo_last, 1859 bool *changed, 1860 struct netlink_ext_ack *extack); 1861 1862 #ifdef CONFIG_SYSFS 1863 /* br_sysfs_if.c */ 1864 extern const struct sysfs_ops brport_sysfs_ops; 1865 int br_sysfs_addif(struct net_bridge_port *p); 1866 int br_sysfs_renameif(struct net_bridge_port *p); 1867 1868 /* br_sysfs_br.c */ 1869 int br_sysfs_addbr(struct net_device *dev); 1870 void br_sysfs_delbr(struct net_device *dev); 1871 1872 #else 1873 1874 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 1875 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 1876 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 1877 static inline void br_sysfs_delbr(struct net_device *dev) { return; } 1878 #endif /* CONFIG_SYSFS */ 1879 1880 /* br_switchdev.c */ 1881 #ifdef CONFIG_NET_SWITCHDEV 1882 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb); 1883 1884 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb); 1885 1886 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, 1887 struct sk_buff *skb); 1888 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, 1889 struct sk_buff *skb); 1890 void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1891 struct sk_buff *skb); 1892 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1893 const struct sk_buff *skb); 1894 int br_switchdev_set_port_flag(struct net_bridge_port *p, 1895 unsigned long flags, 1896 unsigned long mask, 1897 struct netlink_ext_ack *extack); 1898 void br_switchdev_fdb_notify(struct net_bridge *br, 1899 const struct net_bridge_fdb_entry *fdb, int type); 1900 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, 1901 struct netlink_ext_ack *extack); 1902 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); 1903 void br_switchdev_init(struct net_bridge *br); 1904 1905 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1906 { 1907 skb->offload_fwd_mark = 0; 1908 } 1909 #else 1910 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb) 1911 { 1912 return false; 1913 } 1914 1915 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb) 1916 { 1917 } 1918 1919 static inline void 1920 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, 1921 struct sk_buff *skb) 1922 { 1923 } 1924 1925 static inline void 1926 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, 1927 struct sk_buff *skb) 1928 { 1929 } 1930 1931 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1932 struct sk_buff *skb) 1933 { 1934 } 1935 1936 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1937 const struct sk_buff *skb) 1938 { 1939 return true; 1940 } 1941 1942 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, 1943 unsigned long flags, 1944 unsigned long mask, 1945 struct netlink_ext_ack *extack) 1946 { 1947 return 0; 1948 } 1949 1950 static inline int br_switchdev_port_vlan_add(struct net_device *dev, 1951 u16 vid, u16 flags, 1952 struct netlink_ext_ack *extack) 1953 { 1954 return -EOPNOTSUPP; 1955 } 1956 1957 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) 1958 { 1959 return -EOPNOTSUPP; 1960 } 1961 1962 static inline void 1963 br_switchdev_fdb_notify(struct net_bridge *br, 1964 const struct net_bridge_fdb_entry *fdb, int type) 1965 { 1966 } 1967 1968 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1969 { 1970 } 1971 1972 static inline void br_switchdev_init(struct net_bridge *br) 1973 { 1974 } 1975 1976 #endif /* CONFIG_NET_SWITCHDEV */ 1977 1978 /* br_arp_nd_proxy.c */ 1979 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); 1980 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, 1981 u16 vid, struct net_bridge_port *p); 1982 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, 1983 u16 vid, struct net_bridge_port *p, struct nd_msg *msg); 1984 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); 1985 #endif 1986