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_VERSION "2.3" 33 34 /* Control of forwarding link local multicast */ 35 #define BR_GROUPFWD_DEFAULT 0 36 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ 37 enum { 38 BR_GROUPFWD_STP = BIT(0), 39 BR_GROUPFWD_MACPAUSE = BIT(1), 40 BR_GROUPFWD_LACP = BIT(2), 41 }; 42 43 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ 44 BR_GROUPFWD_LACP) 45 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ 46 #define BR_GROUPFWD_8021AD 0xB801u 47 48 /* Path to usermode spanning tree program */ 49 #define BR_STP_PROG "/sbin/bridge-stp" 50 51 typedef struct bridge_id bridge_id; 52 typedef struct mac_addr mac_addr; 53 typedef __u16 port_id; 54 55 struct bridge_id { 56 unsigned char prio[2]; 57 unsigned char addr[ETH_ALEN]; 58 }; 59 60 struct mac_addr { 61 unsigned char addr[ETH_ALEN]; 62 }; 63 64 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 65 /* our own querier */ 66 struct bridge_mcast_own_query { 67 struct timer_list timer; 68 u32 startup_sent; 69 }; 70 71 /* other querier */ 72 struct bridge_mcast_other_query { 73 struct timer_list timer; 74 unsigned long delay_time; 75 }; 76 77 /* selected querier */ 78 struct bridge_mcast_querier { 79 struct br_ip addr; 80 struct net_bridge_port __rcu *port; 81 }; 82 83 /* IGMP/MLD statistics */ 84 struct bridge_mcast_stats { 85 struct br_mcast_stats mstats; 86 struct u64_stats_sync syncp; 87 }; 88 #endif 89 90 struct br_vlan_stats { 91 u64 rx_bytes; 92 u64 rx_packets; 93 u64 tx_bytes; 94 u64 tx_packets; 95 struct u64_stats_sync syncp; 96 }; 97 98 struct br_tunnel_info { 99 __be64 tunnel_id; 100 struct metadata_dst *tunnel_dst; 101 }; 102 103 /* private vlan flags */ 104 enum { 105 BR_VLFLAG_PER_PORT_STATS = BIT(0), 106 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), 107 }; 108 109 /** 110 * struct net_bridge_vlan - per-vlan entry 111 * 112 * @vnode: rhashtable member 113 * @vid: VLAN id 114 * @flags: bridge vlan flags 115 * @priv_flags: private (in-kernel) bridge vlan flags 116 * @stats: per-cpu VLAN statistics 117 * @br: if MASTER flag set, this points to a bridge struct 118 * @port: if MASTER flag unset, this points to a port struct 119 * @refcnt: if MASTER flag set, this is bumped for each port referencing it 120 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context 121 * for this VLAN entry 122 * @vlist: sorted list of VLAN entries 123 * @rcu: used for entry destruction 124 * 125 * This structure is shared between the global per-VLAN entries contained in 126 * the bridge rhashtable and the local per-port per-VLAN entries contained in 127 * the port's rhashtable. The union entries should be interpreted depending on 128 * the entry flags that are set. 129 */ 130 struct net_bridge_vlan { 131 struct rhash_head vnode; 132 struct rhash_head tnode; 133 u16 vid; 134 u16 flags; 135 u16 priv_flags; 136 struct br_vlan_stats __percpu *stats; 137 union { 138 struct net_bridge *br; 139 struct net_bridge_port *port; 140 }; 141 union { 142 refcount_t refcnt; 143 struct net_bridge_vlan *brvlan; 144 }; 145 146 struct br_tunnel_info tinfo; 147 148 struct list_head vlist; 149 150 struct rcu_head rcu; 151 }; 152 153 /** 154 * struct net_bridge_vlan_group 155 * 156 * @vlan_hash: VLAN entry rhashtable 157 * @vlan_list: sorted VLAN entry list 158 * @num_vlans: number of total VLAN entries 159 * @pvid: PVID VLAN id 160 * 161 * IMPORTANT: Be careful when checking if there're VLAN entries using list 162 * primitives because the bridge can have entries in its list which 163 * are just for global context but not for filtering, i.e. they have 164 * the master flag set but not the brentry flag. If you have to check 165 * if there're "real" entries in the bridge please test @num_vlans 166 */ 167 struct net_bridge_vlan_group { 168 struct rhashtable vlan_hash; 169 struct rhashtable tunnel_hash; 170 struct list_head vlan_list; 171 u16 num_vlans; 172 u16 pvid; 173 }; 174 175 /* bridge fdb flags */ 176 enum { 177 BR_FDB_LOCAL, 178 BR_FDB_STATIC, 179 BR_FDB_STICKY, 180 BR_FDB_ADDED_BY_USER, 181 BR_FDB_ADDED_BY_EXT_LEARN, 182 BR_FDB_OFFLOADED, 183 }; 184 185 struct net_bridge_fdb_key { 186 mac_addr addr; 187 u16 vlan_id; 188 }; 189 190 struct net_bridge_fdb_entry { 191 struct rhash_head rhnode; 192 struct net_bridge_port *dst; 193 194 struct net_bridge_fdb_key key; 195 struct hlist_node fdb_node; 196 unsigned long flags; 197 198 /* write-heavy members should not affect lookups */ 199 unsigned long updated ____cacheline_aligned_in_smp; 200 unsigned long used; 201 202 struct rcu_head rcu; 203 }; 204 205 #define MDB_PG_FLAGS_PERMANENT BIT(0) 206 #define MDB_PG_FLAGS_OFFLOAD BIT(1) 207 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2) 208 209 struct net_bridge_port_group { 210 struct net_bridge_port *port; 211 struct net_bridge_port_group __rcu *next; 212 struct hlist_node mglist; 213 struct rcu_head rcu; 214 struct timer_list timer; 215 struct br_ip addr; 216 unsigned char flags; 217 unsigned char eth_addr[ETH_ALEN]; 218 }; 219 220 struct net_bridge_mdb_entry { 221 struct rhash_head rhnode; 222 struct net_bridge *br; 223 struct net_bridge_port_group __rcu *ports; 224 struct rcu_head rcu; 225 struct timer_list timer; 226 struct br_ip addr; 227 bool host_joined; 228 struct hlist_node mdb_node; 229 }; 230 231 struct net_bridge_port { 232 struct net_bridge *br; 233 struct net_device *dev; 234 struct list_head list; 235 236 unsigned long flags; 237 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 238 struct net_bridge_vlan_group __rcu *vlgrp; 239 #endif 240 struct net_bridge_port __rcu *backup_port; 241 242 /* STP */ 243 u8 priority; 244 u8 state; 245 u16 port_no; 246 unsigned char topology_change_ack; 247 unsigned char config_pending; 248 port_id port_id; 249 port_id designated_port; 250 bridge_id designated_root; 251 bridge_id designated_bridge; 252 u32 path_cost; 253 u32 designated_cost; 254 unsigned long designated_age; 255 256 struct timer_list forward_delay_timer; 257 struct timer_list hold_timer; 258 struct timer_list message_age_timer; 259 struct kobject kobj; 260 struct rcu_head rcu; 261 262 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 263 struct bridge_mcast_own_query ip4_own_query; 264 #if IS_ENABLED(CONFIG_IPV6) 265 struct bridge_mcast_own_query ip6_own_query; 266 #endif /* IS_ENABLED(CONFIG_IPV6) */ 267 unsigned char multicast_router; 268 struct bridge_mcast_stats __percpu *mcast_stats; 269 struct timer_list multicast_router_timer; 270 struct hlist_head mglist; 271 struct hlist_node rlist; 272 #endif 273 274 #ifdef CONFIG_SYSFS 275 char sysfs_name[IFNAMSIZ]; 276 #endif 277 278 #ifdef CONFIG_NET_POLL_CONTROLLER 279 struct netpoll *np; 280 #endif 281 #ifdef CONFIG_NET_SWITCHDEV 282 int offload_fwd_mark; 283 #endif 284 u16 group_fwd_mask; 285 u16 backup_redirected_cnt; 286 287 struct bridge_stp_xstats stp_xstats; 288 }; 289 290 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) 291 292 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) 293 #define br_promisc_port(p) ((p)->flags & BR_PROMISC) 294 295 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 296 { 297 return rcu_dereference(dev->rx_handler_data); 298 } 299 300 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) 301 { 302 return netif_is_bridge_port(dev) ? 303 rtnl_dereference(dev->rx_handler_data) : NULL; 304 } 305 306 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) 307 { 308 return netif_is_bridge_port(dev) ? 309 rcu_dereference_rtnl(dev->rx_handler_data) : NULL; 310 } 311 312 enum net_bridge_opts { 313 BROPT_VLAN_ENABLED, 314 BROPT_VLAN_STATS_ENABLED, 315 BROPT_NF_CALL_IPTABLES, 316 BROPT_NF_CALL_IP6TABLES, 317 BROPT_NF_CALL_ARPTABLES, 318 BROPT_GROUP_ADDR_SET, 319 BROPT_MULTICAST_ENABLED, 320 BROPT_MULTICAST_QUERIER, 321 BROPT_MULTICAST_QUERY_USE_IFADDR, 322 BROPT_MULTICAST_STATS_ENABLED, 323 BROPT_HAS_IPV6_ADDR, 324 BROPT_NEIGH_SUPPRESS_ENABLED, 325 BROPT_MTU_SET_BY_USER, 326 BROPT_VLAN_STATS_PER_PORT, 327 BROPT_NO_LL_LEARN, 328 BROPT_VLAN_BRIDGE_BINDING, 329 }; 330 331 struct net_bridge { 332 spinlock_t lock; 333 spinlock_t hash_lock; 334 struct list_head port_list; 335 struct net_device *dev; 336 struct pcpu_sw_netstats __percpu *stats; 337 unsigned long options; 338 /* These fields are accessed on each packet */ 339 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 340 __be16 vlan_proto; 341 u16 default_pvid; 342 struct net_bridge_vlan_group __rcu *vlgrp; 343 #endif 344 345 struct rhashtable fdb_hash_tbl; 346 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 347 union { 348 struct rtable fake_rtable; 349 struct rt6_info fake_rt6_info; 350 }; 351 #endif 352 u16 group_fwd_mask; 353 u16 group_fwd_mask_required; 354 355 /* STP */ 356 bridge_id designated_root; 357 bridge_id bridge_id; 358 unsigned char topology_change; 359 unsigned char topology_change_detected; 360 u16 root_port; 361 unsigned long max_age; 362 unsigned long hello_time; 363 unsigned long forward_delay; 364 unsigned long ageing_time; 365 unsigned long bridge_max_age; 366 unsigned long bridge_hello_time; 367 unsigned long bridge_forward_delay; 368 unsigned long bridge_ageing_time; 369 u32 root_path_cost; 370 371 u8 group_addr[ETH_ALEN]; 372 373 enum { 374 BR_NO_STP, /* no spanning tree */ 375 BR_KERNEL_STP, /* old STP in kernel */ 376 BR_USER_STP, /* new RSTP in userspace */ 377 } stp_enabled; 378 379 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 380 381 u32 hash_max; 382 383 u32 multicast_last_member_count; 384 u32 multicast_startup_query_count; 385 386 u8 multicast_igmp_version; 387 u8 multicast_router; 388 #if IS_ENABLED(CONFIG_IPV6) 389 u8 multicast_mld_version; 390 #endif 391 spinlock_t multicast_lock; 392 unsigned long multicast_last_member_interval; 393 unsigned long multicast_membership_interval; 394 unsigned long multicast_querier_interval; 395 unsigned long multicast_query_interval; 396 unsigned long multicast_query_response_interval; 397 unsigned long multicast_startup_query_interval; 398 399 struct rhashtable mdb_hash_tbl; 400 401 struct hlist_head mdb_list; 402 struct hlist_head router_list; 403 404 struct timer_list multicast_router_timer; 405 struct bridge_mcast_other_query ip4_other_query; 406 struct bridge_mcast_own_query ip4_own_query; 407 struct bridge_mcast_querier ip4_querier; 408 struct bridge_mcast_stats __percpu *mcast_stats; 409 #if IS_ENABLED(CONFIG_IPV6) 410 struct bridge_mcast_other_query ip6_other_query; 411 struct bridge_mcast_own_query ip6_own_query; 412 struct bridge_mcast_querier ip6_querier; 413 #endif /* IS_ENABLED(CONFIG_IPV6) */ 414 #endif 415 416 struct timer_list hello_timer; 417 struct timer_list tcn_timer; 418 struct timer_list topology_change_timer; 419 struct delayed_work gc_work; 420 struct kobject *ifobj; 421 u32 auto_cnt; 422 423 #ifdef CONFIG_NET_SWITCHDEV 424 int offload_fwd_mark; 425 #endif 426 struct hlist_head fdb_list; 427 }; 428 429 struct br_input_skb_cb { 430 struct net_device *brdev; 431 432 u16 frag_max_size; 433 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 434 u8 igmp; 435 u8 mrouters_only:1; 436 #endif 437 u8 proxyarp_replied:1; 438 u8 src_port_isolated:1; 439 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 440 u8 vlan_filtered:1; 441 #endif 442 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE 443 u8 br_netfilter_broute:1; 444 #endif 445 446 #ifdef CONFIG_NET_SWITCHDEV 447 int offload_fwd_mark; 448 #endif 449 }; 450 451 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 452 453 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 454 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 455 #else 456 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 457 #endif 458 459 #define br_printk(level, br, format, args...) \ 460 printk(level "%s: " format, (br)->dev->name, ##args) 461 462 #define br_err(__br, format, args...) \ 463 br_printk(KERN_ERR, __br, format, ##args) 464 #define br_warn(__br, format, args...) \ 465 br_printk(KERN_WARNING, __br, format, ##args) 466 #define br_notice(__br, format, args...) \ 467 br_printk(KERN_NOTICE, __br, format, ##args) 468 #define br_info(__br, format, args...) \ 469 br_printk(KERN_INFO, __br, format, ##args) 470 471 #define br_debug(br, format, args...) \ 472 pr_debug("%s: " format, (br)->dev->name, ##args) 473 474 /* called under bridge lock */ 475 static inline int br_is_root_bridge(const struct net_bridge *br) 476 { 477 return !memcmp(&br->bridge_id, &br->designated_root, 8); 478 } 479 480 /* check if a VLAN entry is global */ 481 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) 482 { 483 return v->flags & BRIDGE_VLAN_INFO_MASTER; 484 } 485 486 /* check if a VLAN entry is used by the bridge */ 487 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) 488 { 489 return v->flags & BRIDGE_VLAN_INFO_BRENTRY; 490 } 491 492 /* check if we should use the vlan entry, returns false if it's only context */ 493 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) 494 { 495 if (br_vlan_is_master(v)) { 496 if (br_vlan_is_brentry(v)) 497 return true; 498 else 499 return false; 500 } 501 502 return true; 503 } 504 505 static inline bool nbp_state_should_learn(const struct net_bridge_port *p) 506 { 507 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; 508 } 509 510 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) 511 { 512 bool ret = vid > 0 && vid < VLAN_VID_MASK; 513 514 if (!ret) 515 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); 516 517 return ret; 518 } 519 520 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, 521 const struct bridge_vlan_info *last, 522 struct netlink_ext_ack *extack) 523 { 524 /* pvid flag is not allowed in ranges */ 525 if (cur->flags & BRIDGE_VLAN_INFO_PVID) { 526 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); 527 return false; 528 } 529 530 /* when cur is the range end, check if: 531 * - it has range start flag 532 * - range ids are invalid (end is equal to or before start) 533 */ 534 if (last) { 535 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 536 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); 537 return false; 538 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { 539 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); 540 return false; 541 } else if (cur->vid <= last->vid) { 542 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 543 return false; 544 } 545 } 546 547 /* check for required range flags */ 548 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 549 BRIDGE_VLAN_INFO_RANGE_END))) { 550 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); 551 return false; 552 } 553 554 return true; 555 } 556 557 static inline int br_opt_get(const struct net_bridge *br, 558 enum net_bridge_opts opt) 559 { 560 return test_bit(opt, &br->options); 561 } 562 563 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, 564 struct netlink_ext_ack *extack); 565 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); 566 int br_boolopt_multi_toggle(struct net_bridge *br, 567 struct br_boolopt_multi *bm, 568 struct netlink_ext_ack *extack); 569 void br_boolopt_multi_get(const struct net_bridge *br, 570 struct br_boolopt_multi *bm); 571 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); 572 573 /* br_device.c */ 574 void br_dev_setup(struct net_device *dev); 575 void br_dev_delete(struct net_device *dev, struct list_head *list); 576 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 577 #ifdef CONFIG_NET_POLL_CONTROLLER 578 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 579 struct sk_buff *skb) 580 { 581 struct netpoll *np = p->np; 582 583 if (np) 584 netpoll_send_skb(np, skb); 585 } 586 587 int br_netpoll_enable(struct net_bridge_port *p); 588 void br_netpoll_disable(struct net_bridge_port *p); 589 #else 590 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 591 struct sk_buff *skb) 592 { 593 } 594 595 static inline int br_netpoll_enable(struct net_bridge_port *p) 596 { 597 return 0; 598 } 599 600 static inline void br_netpoll_disable(struct net_bridge_port *p) 601 { 602 } 603 #endif 604 605 /* br_fdb.c */ 606 int br_fdb_init(void); 607 void br_fdb_fini(void); 608 int br_fdb_hash_init(struct net_bridge *br); 609 void br_fdb_hash_fini(struct net_bridge *br); 610 void br_fdb_flush(struct net_bridge *br); 611 void br_fdb_find_delete_local(struct net_bridge *br, 612 const struct net_bridge_port *p, 613 const unsigned char *addr, u16 vid); 614 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); 615 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 616 void br_fdb_cleanup(struct work_struct *work); 617 void br_fdb_delete_by_port(struct net_bridge *br, 618 const struct net_bridge_port *p, u16 vid, int do_all); 619 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, 620 const unsigned char *addr, 621 __u16 vid); 622 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 623 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, 624 unsigned long off); 625 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, 626 const unsigned char *addr, u16 vid); 627 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, 628 const unsigned char *addr, u16 vid, unsigned long flags); 629 630 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], 631 struct net_device *dev, const unsigned char *addr, u16 vid); 632 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, 633 const unsigned char *addr, u16 vid, u16 nlh_flags, 634 struct netlink_ext_ack *extack); 635 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 636 struct net_device *dev, struct net_device *fdev, int *idx); 637 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, 638 const unsigned char *addr, u16 vid, u32 portid, u32 seq, 639 struct netlink_ext_ack *extack); 640 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); 641 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); 642 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, 643 const unsigned char *addr, u16 vid, 644 bool swdev_notify); 645 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, 646 const unsigned char *addr, u16 vid, 647 bool swdev_notify); 648 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, 649 const unsigned char *addr, u16 vid, bool offloaded); 650 651 /* br_forward.c */ 652 enum br_pkt_type { 653 BR_PKT_UNICAST, 654 BR_PKT_MULTICAST, 655 BR_PKT_BROADCAST 656 }; 657 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); 658 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, 659 bool local_rcv, bool local_orig); 660 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 661 void br_flood(struct net_bridge *br, struct sk_buff *skb, 662 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); 663 664 /* return true if both source port and dest port are isolated */ 665 static inline bool br_skb_isolated(const struct net_bridge_port *to, 666 const struct sk_buff *skb) 667 { 668 return BR_INPUT_SKB_CB(skb)->src_port_isolated && 669 (to->flags & BR_ISOLATED); 670 } 671 672 /* br_if.c */ 673 void br_port_carrier_check(struct net_bridge_port *p, bool *notified); 674 int br_add_bridge(struct net *net, const char *name); 675 int br_del_bridge(struct net *net, const char *name); 676 int br_add_if(struct net_bridge *br, struct net_device *dev, 677 struct netlink_ext_ack *extack); 678 int br_del_if(struct net_bridge *br, struct net_device *dev); 679 void br_mtu_auto_adjust(struct net_bridge *br); 680 netdev_features_t br_features_recompute(struct net_bridge *br, 681 netdev_features_t features); 682 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); 683 void br_manage_promisc(struct net_bridge *br); 684 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); 685 686 /* br_input.c */ 687 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 688 rx_handler_result_t br_handle_frame(struct sk_buff **pskb); 689 690 static inline bool br_rx_handler_check_rcu(const struct net_device *dev) 691 { 692 return rcu_dereference(dev->rx_handler) == br_handle_frame; 693 } 694 695 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) 696 { 697 return rcu_dereference_rtnl(dev->rx_handler) == br_handle_frame; 698 } 699 700 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) 701 { 702 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; 703 } 704 705 static inline struct net_bridge_port * 706 br_port_get_check_rtnl(const struct net_device *dev) 707 { 708 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; 709 } 710 711 /* br_ioctl.c */ 712 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 713 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, 714 void __user *arg); 715 716 /* br_multicast.c */ 717 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 718 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, 719 struct sk_buff *skb, u16 vid); 720 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 721 struct sk_buff *skb, u16 vid); 722 int br_multicast_add_port(struct net_bridge_port *port); 723 void br_multicast_del_port(struct net_bridge_port *port); 724 void br_multicast_enable_port(struct net_bridge_port *port); 725 void br_multicast_disable_port(struct net_bridge_port *port); 726 void br_multicast_init(struct net_bridge *br); 727 void br_multicast_open(struct net_bridge *br); 728 void br_multicast_stop(struct net_bridge *br); 729 void br_multicast_dev_del(struct net_bridge *br); 730 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 731 struct sk_buff *skb, bool local_rcv, bool local_orig); 732 int br_multicast_set_router(struct net_bridge *br, unsigned long val); 733 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val); 734 int br_multicast_toggle(struct net_bridge *br, unsigned long val); 735 int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 736 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 737 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val); 738 #if IS_ENABLED(CONFIG_IPV6) 739 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val); 740 #endif 741 struct net_bridge_mdb_entry * 742 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); 743 struct net_bridge_mdb_entry * 744 br_multicast_new_group(struct net_bridge *br, struct br_ip *group); 745 struct net_bridge_port_group * 746 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, 747 struct net_bridge_port_group __rcu *next, 748 unsigned char flags, const unsigned char *src); 749 int br_mdb_hash_init(struct net_bridge *br); 750 void br_mdb_hash_fini(struct net_bridge *br); 751 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, 752 struct br_ip *group, int type, u8 flags); 753 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port, 754 int type); 755 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p, 756 const struct sk_buff *skb, u8 type, u8 dir); 757 int br_multicast_init_stats(struct net_bridge *br); 758 void br_multicast_uninit_stats(struct net_bridge *br); 759 void br_multicast_get_stats(const struct net_bridge *br, 760 const struct net_bridge_port *p, 761 struct br_mcast_stats *dest); 762 void br_mdb_init(void); 763 void br_mdb_uninit(void); 764 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify); 765 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); 766 767 #define mlock_dereference(X, br) \ 768 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 769 770 static inline bool br_multicast_is_router(struct net_bridge *br) 771 { 772 return br->multicast_router == 2 || 773 (br->multicast_router == 1 && 774 timer_pending(&br->multicast_router_timer)); 775 } 776 777 static inline bool 778 __br_multicast_querier_exists(struct net_bridge *br, 779 struct bridge_mcast_other_query *querier, 780 const bool is_ipv6) 781 { 782 bool own_querier_enabled; 783 784 if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) { 785 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR)) 786 own_querier_enabled = false; 787 else 788 own_querier_enabled = true; 789 } else { 790 own_querier_enabled = false; 791 } 792 793 return time_is_before_jiffies(querier->delay_time) && 794 (own_querier_enabled || timer_pending(&querier->timer)); 795 } 796 797 static inline bool br_multicast_querier_exists(struct net_bridge *br, 798 struct ethhdr *eth) 799 { 800 switch (eth->h_proto) { 801 case (htons(ETH_P_IP)): 802 return __br_multicast_querier_exists(br, 803 &br->ip4_other_query, false); 804 #if IS_ENABLED(CONFIG_IPV6) 805 case (htons(ETH_P_IPV6)): 806 return __br_multicast_querier_exists(br, 807 &br->ip6_other_query, true); 808 #endif 809 default: 810 return false; 811 } 812 } 813 814 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 815 { 816 return BR_INPUT_SKB_CB(skb)->igmp; 817 } 818 #else 819 static inline int br_multicast_rcv(struct net_bridge *br, 820 struct net_bridge_port *port, 821 struct sk_buff *skb, 822 u16 vid) 823 { 824 return 0; 825 } 826 827 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 828 struct sk_buff *skb, u16 vid) 829 { 830 return NULL; 831 } 832 833 static inline int br_multicast_add_port(struct net_bridge_port *port) 834 { 835 return 0; 836 } 837 838 static inline void br_multicast_del_port(struct net_bridge_port *port) 839 { 840 } 841 842 static inline void br_multicast_enable_port(struct net_bridge_port *port) 843 { 844 } 845 846 static inline void br_multicast_disable_port(struct net_bridge_port *port) 847 { 848 } 849 850 static inline void br_multicast_init(struct net_bridge *br) 851 { 852 } 853 854 static inline void br_multicast_open(struct net_bridge *br) 855 { 856 } 857 858 static inline void br_multicast_stop(struct net_bridge *br) 859 { 860 } 861 862 static inline void br_multicast_dev_del(struct net_bridge *br) 863 { 864 } 865 866 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 867 struct sk_buff *skb, 868 bool local_rcv, bool local_orig) 869 { 870 } 871 872 static inline bool br_multicast_is_router(struct net_bridge *br) 873 { 874 return false; 875 } 876 877 static inline bool br_multicast_querier_exists(struct net_bridge *br, 878 struct ethhdr *eth) 879 { 880 return false; 881 } 882 883 static inline void br_mdb_init(void) 884 { 885 } 886 887 static inline void br_mdb_uninit(void) 888 { 889 } 890 891 static inline int br_mdb_hash_init(struct net_bridge *br) 892 { 893 return 0; 894 } 895 896 static inline void br_mdb_hash_fini(struct net_bridge *br) 897 { 898 } 899 900 static inline void br_multicast_count(struct net_bridge *br, 901 const struct net_bridge_port *p, 902 const struct sk_buff *skb, 903 u8 type, u8 dir) 904 { 905 } 906 907 static inline int br_multicast_init_stats(struct net_bridge *br) 908 { 909 return 0; 910 } 911 912 static inline void br_multicast_uninit_stats(struct net_bridge *br) 913 { 914 } 915 916 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 917 { 918 return 0; 919 } 920 #endif 921 922 /* br_vlan.c */ 923 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 924 bool br_allowed_ingress(const struct net_bridge *br, 925 struct net_bridge_vlan_group *vg, struct sk_buff *skb, 926 u16 *vid); 927 bool br_allowed_egress(struct net_bridge_vlan_group *vg, 928 const struct sk_buff *skb); 929 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); 930 struct sk_buff *br_handle_vlan(struct net_bridge *br, 931 const struct net_bridge_port *port, 932 struct net_bridge_vlan_group *vg, 933 struct sk_buff *skb); 934 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 935 bool *changed, struct netlink_ext_ack *extack); 936 int br_vlan_delete(struct net_bridge *br, u16 vid); 937 void br_vlan_flush(struct net_bridge *br); 938 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); 939 void br_recalculate_fwd_mask(struct net_bridge *br); 940 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); 941 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); 942 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto); 943 int br_vlan_set_proto(struct net_bridge *br, unsigned long val); 944 int br_vlan_set_stats(struct net_bridge *br, unsigned long val); 945 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); 946 int br_vlan_init(struct net_bridge *br); 947 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val); 948 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 949 struct netlink_ext_ack *extack); 950 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 951 bool *changed, struct netlink_ext_ack *extack); 952 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); 953 void nbp_vlan_flush(struct net_bridge_port *port); 954 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); 955 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); 956 void br_vlan_get_stats(const struct net_bridge_vlan *v, 957 struct br_vlan_stats *stats); 958 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); 959 int br_vlan_bridge_event(struct net_device *dev, unsigned long event, 960 void *ptr); 961 962 static inline struct net_bridge_vlan_group *br_vlan_group( 963 const struct net_bridge *br) 964 { 965 return rtnl_dereference(br->vlgrp); 966 } 967 968 static inline struct net_bridge_vlan_group *nbp_vlan_group( 969 const struct net_bridge_port *p) 970 { 971 return rtnl_dereference(p->vlgrp); 972 } 973 974 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 975 const struct net_bridge *br) 976 { 977 return rcu_dereference(br->vlgrp); 978 } 979 980 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 981 const struct net_bridge_port *p) 982 { 983 return rcu_dereference(p->vlgrp); 984 } 985 986 /* Since bridge now depends on 8021Q module, but the time bridge sees the 987 * skb, the vlan tag will always be present if the frame was tagged. 988 */ 989 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) 990 { 991 int err = 0; 992 993 if (skb_vlan_tag_present(skb)) { 994 *vid = skb_vlan_tag_get_id(skb); 995 } else { 996 *vid = 0; 997 err = -EINVAL; 998 } 999 1000 return err; 1001 } 1002 1003 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1004 { 1005 if (!vg) 1006 return 0; 1007 1008 smp_rmb(); 1009 return vg->pvid; 1010 } 1011 1012 #else 1013 static inline bool br_allowed_ingress(const struct net_bridge *br, 1014 struct net_bridge_vlan_group *vg, 1015 struct sk_buff *skb, 1016 u16 *vid) 1017 { 1018 return true; 1019 } 1020 1021 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1022 const struct sk_buff *skb) 1023 { 1024 return true; 1025 } 1026 1027 static inline bool br_should_learn(struct net_bridge_port *p, 1028 struct sk_buff *skb, u16 *vid) 1029 { 1030 return true; 1031 } 1032 1033 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, 1034 const struct net_bridge_port *port, 1035 struct net_bridge_vlan_group *vg, 1036 struct sk_buff *skb) 1037 { 1038 return skb; 1039 } 1040 1041 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1042 bool *changed, struct netlink_ext_ack *extack) 1043 { 1044 *changed = false; 1045 return -EOPNOTSUPP; 1046 } 1047 1048 static inline int br_vlan_delete(struct net_bridge *br, u16 vid) 1049 { 1050 return -EOPNOTSUPP; 1051 } 1052 1053 static inline void br_vlan_flush(struct net_bridge *br) 1054 { 1055 } 1056 1057 static inline void br_recalculate_fwd_mask(struct net_bridge *br) 1058 { 1059 } 1060 1061 static inline int br_vlan_init(struct net_bridge *br) 1062 { 1063 return 0; 1064 } 1065 1066 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1067 bool *changed, struct netlink_ext_ack *extack) 1068 { 1069 *changed = false; 1070 return -EOPNOTSUPP; 1071 } 1072 1073 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1074 { 1075 return -EOPNOTSUPP; 1076 } 1077 1078 static inline void nbp_vlan_flush(struct net_bridge_port *port) 1079 { 1080 } 1081 1082 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, 1083 u16 vid) 1084 { 1085 return NULL; 1086 } 1087 1088 static inline int nbp_vlan_init(struct net_bridge_port *port, 1089 struct netlink_ext_ack *extack) 1090 { 1091 return 0; 1092 } 1093 1094 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) 1095 { 1096 return 0; 1097 } 1098 1099 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1100 { 1101 return 0; 1102 } 1103 1104 static inline int __br_vlan_filter_toggle(struct net_bridge *br, 1105 unsigned long val) 1106 { 1107 return -EOPNOTSUPP; 1108 } 1109 1110 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, 1111 u32 filter_mask) 1112 { 1113 return 0; 1114 } 1115 1116 static inline struct net_bridge_vlan_group *br_vlan_group( 1117 const struct net_bridge *br) 1118 { 1119 return NULL; 1120 } 1121 1122 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1123 const struct net_bridge_port *p) 1124 { 1125 return NULL; 1126 } 1127 1128 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1129 const struct net_bridge *br) 1130 { 1131 return NULL; 1132 } 1133 1134 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1135 const struct net_bridge_port *p) 1136 { 1137 return NULL; 1138 } 1139 1140 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, 1141 struct br_vlan_stats *stats) 1142 { 1143 } 1144 1145 static inline void br_vlan_port_event(struct net_bridge_port *p, 1146 unsigned long event) 1147 { 1148 } 1149 1150 static inline int br_vlan_bridge_event(struct net_device *dev, 1151 unsigned long event, void *ptr) 1152 { 1153 return 0; 1154 } 1155 #endif 1156 1157 struct nf_br_ops { 1158 int (*br_dev_xmit_hook)(struct sk_buff *skb); 1159 }; 1160 extern const struct nf_br_ops __rcu *nf_br_ops; 1161 1162 /* br_netfilter.c */ 1163 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1164 int br_nf_core_init(void); 1165 void br_nf_core_fini(void); 1166 void br_netfilter_rtable_init(struct net_bridge *); 1167 #else 1168 static inline int br_nf_core_init(void) { return 0; } 1169 static inline void br_nf_core_fini(void) {} 1170 #define br_netfilter_rtable_init(x) 1171 #endif 1172 1173 /* br_stp.c */ 1174 void br_set_state(struct net_bridge_port *p, unsigned int state); 1175 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); 1176 void br_init_port(struct net_bridge_port *p); 1177 void br_become_designated_port(struct net_bridge_port *p); 1178 1179 void __br_set_forward_delay(struct net_bridge *br, unsigned long t); 1180 int br_set_forward_delay(struct net_bridge *br, unsigned long x); 1181 int br_set_hello_time(struct net_bridge *br, unsigned long x); 1182 int br_set_max_age(struct net_bridge *br, unsigned long x); 1183 int __set_ageing_time(struct net_device *dev, unsigned long t); 1184 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); 1185 1186 1187 /* br_stp_if.c */ 1188 void br_stp_enable_bridge(struct net_bridge *br); 1189 void br_stp_disable_bridge(struct net_bridge *br); 1190 void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 1191 void br_stp_enable_port(struct net_bridge_port *p); 1192 void br_stp_disable_port(struct net_bridge_port *p); 1193 bool br_stp_recalculate_bridge_id(struct net_bridge *br); 1194 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 1195 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); 1196 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); 1197 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); 1198 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 1199 1200 /* br_stp_bpdu.c */ 1201 struct stp_proto; 1202 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 1203 struct net_device *dev); 1204 1205 /* br_stp_timer.c */ 1206 void br_stp_timer_init(struct net_bridge *br); 1207 void br_stp_port_timer_init(struct net_bridge_port *p); 1208 unsigned long br_timer_value(const struct timer_list *timer); 1209 1210 /* br.c */ 1211 #if IS_ENABLED(CONFIG_ATM_LANE) 1212 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 1213 #endif 1214 1215 /* br_netlink.c */ 1216 extern struct rtnl_link_ops br_link_ops; 1217 int br_netlink_init(void); 1218 void br_netlink_fini(void); 1219 void br_ifinfo_notify(int event, const struct net_bridge *br, 1220 const struct net_bridge_port *port); 1221 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, 1222 struct netlink_ext_ack *extack); 1223 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); 1224 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, 1225 u32 filter_mask, int nlflags); 1226 1227 #ifdef CONFIG_SYSFS 1228 /* br_sysfs_if.c */ 1229 extern const struct sysfs_ops brport_sysfs_ops; 1230 int br_sysfs_addif(struct net_bridge_port *p); 1231 int br_sysfs_renameif(struct net_bridge_port *p); 1232 1233 /* br_sysfs_br.c */ 1234 int br_sysfs_addbr(struct net_device *dev); 1235 void br_sysfs_delbr(struct net_device *dev); 1236 1237 #else 1238 1239 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 1240 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 1241 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 1242 static inline void br_sysfs_delbr(struct net_device *dev) { return; } 1243 #endif /* CONFIG_SYSFS */ 1244 1245 /* br_switchdev.c */ 1246 #ifdef CONFIG_NET_SWITCHDEV 1247 int nbp_switchdev_mark_set(struct net_bridge_port *p); 1248 void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1249 struct sk_buff *skb); 1250 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1251 const struct sk_buff *skb); 1252 int br_switchdev_set_port_flag(struct net_bridge_port *p, 1253 unsigned long flags, 1254 unsigned long mask); 1255 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, 1256 int type); 1257 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, 1258 struct netlink_ext_ack *extack); 1259 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); 1260 1261 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1262 { 1263 skb->offload_fwd_mark = 0; 1264 } 1265 #else 1266 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p) 1267 { 1268 return 0; 1269 } 1270 1271 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1272 struct sk_buff *skb) 1273 { 1274 } 1275 1276 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1277 const struct sk_buff *skb) 1278 { 1279 return true; 1280 } 1281 1282 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, 1283 unsigned long flags, 1284 unsigned long mask) 1285 { 1286 return 0; 1287 } 1288 1289 static inline int br_switchdev_port_vlan_add(struct net_device *dev, 1290 u16 vid, u16 flags, 1291 struct netlink_ext_ack *extack) 1292 { 1293 return -EOPNOTSUPP; 1294 } 1295 1296 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) 1297 { 1298 return -EOPNOTSUPP; 1299 } 1300 1301 static inline void 1302 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type) 1303 { 1304 } 1305 1306 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1307 { 1308 } 1309 #endif /* CONFIG_NET_SWITCHDEV */ 1310 1311 /* br_arp_nd_proxy.c */ 1312 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); 1313 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, 1314 u16 vid, struct net_bridge_port *p); 1315 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, 1316 u16 vid, struct net_bridge_port *p, struct nd_msg *msg); 1317 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); 1318 #endif 1319