net/bridge/br_private.h

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